[PATCH 00/37] DC Patches Jan 10, 2023

[PATCH 00/37] DC Patches Jan 10, 2023

[Rodrigo Siqueira]

This DC patchset brings improvements in multiple areas. In summary, we
highlight the following areas:
    
- Revert patches that caused regressions associated with audio and an
  old change that checks the DCN version.
- Refactor DDC and HDP.
- Move DPIA and DPCD logic to new files.
- Updates to DMUB.
- Optimization and bug fixes for SUBVP/DRR.
- Drop legacy code.

Cc: Daniel Wheeler <daniel.wheeler@amd.com>

Thanks
Siqueira

Alvin Lee (2):
  drm/amd/display: Request min clocks after disabling pipes on init
  drm/amd/display: Allow subvp on vactive pipes that are 2560x1440@60

Aric Cyr (1):
  drm/amd/display: 3.2.218

Aurabindo Pillai (2):
  Revert "drm/amd/display: Demote Error Level When ODM Transition
    Supported"
  drm/amd/display: fix an error check condition for synced pipes

Bhawanpreet Lakha (1):
  drm/amd/display: Change i2c speed for hdcp

Brandon Syu (1):
  drm/amd/display: fix mapping to non-allocated address

Charlene Liu (2):
  drm/amd/display: add hubbub_init related
  drm/amd/display: contional remove disable dig_fifo when blank

Cruise Hung (1):
  drm/amd/display: Fix DPIA link encoder assignment issue

Dillon Varone (9):
  drm/amd/display: Implement FIFO enable sequence on DCN32
  drm/amd/display: Optimize subvp and drr validation
  drm/amd/display: Account for DCC Meta pitch in DML MALL surface
    calculations
  drm/amd/display: Account for Subvp Phantoms in DML MALL surface
    calculations
  drm/amd/display: Use DML for MALL SS and Subvp allocation calculations
  drm/amd/display: cleanup function args in dml
  drm/amd/display: set active bit for desktop with VSDBv3
  drm/amd/display: Remove DISPCLK dentist programming for dcn32
  drm/amd/display: Account for MPO planes in dcn32 mall alloc
    calculations

Dmytro Laktyushkin (1):
  drm/amd/display: fix multi edp panel instancing

Martin Leung (1):
  Revert "drm/amd/display: Speed up DML fast_validate path"

Mustapha Ghaddar (2):
  drm/amd/display: Update BW alloc after new DMUB logic
  drm/amd/display: Update dmub header to match DMUB

Rodrigo Siqueira (1):
  drm/amd/display: Remove unused code

Saaem Rizvi (2):
  drm/amd/display: Remove SubVp support if src/dst rect does not equal
    stream timing
  drm/amd/display: Add extra mblk for DCC

Tony Tascioglu (2):
  drm/amd/display: Optimize link power-down when link powered externally
  drm/amd/display: Skip backlight control delay on external powered
    links

Wenjing Liu (7):
  drm/amd/display: refactor hpd logic from dc_link to link_hpd
  drm/amd/display: refactor ddc logic from dc_link_ddc to link_ddc
  drm/amd/display: move dpcd logic from dc_link_dpcd to link_dpcd
  drm/amd/display: move dc_link_dpia logic to link_dp_dpia
  drm/amd/display: move dp link training logic to link_dp_training
  drm/amd/display: move dp phy related logic to link_dp_phy
  drm/amd/display: move dp capability related logic to
    link_dp_capability

hersen wu (2):
  drm/amd/display: phase2 enable mst hdcp multiple displays
  drm/amd/display: hdcp not enabled on connector 0

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |    1 -
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |    3 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c    |  153 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.h    |    5 +-
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |    2 -
 drivers/gpu/drm/amd/display/dc/Makefile       |    6 +-
 .../gpu/drm/amd/display/dc/bios/bios_parser.c |    1 -
 .../drm/amd/display/dc/bios/bios_parser2.c    |    6 +-
 .../drm/amd/display/dc/bios/command_table2.c  |   14 +-
 .../drm/amd/display/dc/bios/command_table2.h  |    3 +-
 .../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c  |   97 +-
 drivers/gpu/drm/amd/display/dc/core/dc.c      |    5 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |  542 +-
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 6682 ++---------------
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c |   60 +-
 .../gpu/drm/amd/display/dc/core/dc_resource.c |   35 +-
 drivers/gpu/drm/amd/display/dc/dc.h           |    3 +-
 .../gpu/drm/amd/display/dc/dc_bios_types.h    |    3 +-
 drivers/gpu/drm/amd/display/dc/dc_ddc_types.h |   28 +
 drivers/gpu/drm/amd/display/dc/dc_dp_types.h  |    3 +
 .../gpu/drm/amd/display/dc/dc_hdmi_types.h    |  114 +
 drivers/gpu/drm/amd/display/dc/dc_link.h      |   69 +-
 drivers/gpu/drm/amd/display/dc/dc_types.h     |    1 +
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.h  |    2 +-
 .../drm/amd/display/dc/dce/dce_link_encoder.c |    1 -
 .../display/dc/dce110/dce110_hw_sequencer.c   |   41 +-
 .../display/dc/dce110/dce110_hw_sequencer.h   |    2 +-
 .../drm/amd/display/dc/dcn10/dcn10_hubbub.h   |   12 +-
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |    4 +-
 .../amd/display/dc/dcn10/dcn10_link_encoder.c |    1 -
 .../display/dc/dcn10/dcn10_stream_encoder.c   |    2 +-
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    |   10 +-
 .../amd/display/dc/dcn20/dcn20_link_encoder.c |    1 -
 .../drm/amd/display/dc/dcn20/dcn20_resource.c |    6 +-
 .../display/dc/dcn20/dcn20_stream_encoder.c   |    2 +-
 .../display/dc/dcn201/dcn201_link_encoder.c   |    1 -
 .../amd/display/dc/dcn21/dcn21_link_encoder.c |    1 -
 .../display/dc/dcn30/dcn30_dio_link_encoder.c |    1 -
 .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    |    1 -
 .../drm/amd/display/dc/dcn30/dcn30_resource.c |    6 +-
 .../dc/dcn301/dcn301_dio_link_encoder.c       |    1 -
 .../amd/display/dc/dcn302/dcn302_resource.c   |   16 +
 .../amd/display/dc/dcn303/dcn303_resource.c   |    6 +-
 .../display/dc/dcn31/dcn31_dio_link_encoder.c |    1 -
 .../drm/amd/display/dc/dcn31/dcn31_hubbub.c   |   18 +
 .../drm/amd/display/dc/dcn31/dcn31_hubbub.h   |   10 +-
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |    9 +-
 .../dc/dcn314/dcn314_dio_stream_encoder.c     |    5 +-
 .../drm/amd/display/dc/dcn314/dcn314_hwseq.c  |    4 +-
 .../amd/display/dc/dcn316/dcn316_resource.c   |    2 +-
 .../display/dc/dcn32/dcn32_dio_link_encoder.c |    1 -
 .../dc/dcn32/dcn32_dio_stream_encoder.c       |   30 +-
 .../drm/amd/display/dc/dcn32/dcn32_hubbub.c   |   29 +
 .../drm/amd/display/dc/dcn32/dcn32_hubbub.h   |   17 +-
 .../gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c |    6 +-
 .../drm/amd/display/dc/dcn32/dcn32_hwseq.c    |  176 +-
 .../drm/amd/display/dc/dcn32/dcn32_resource.c |    6 +-
 .../drm/amd/display/dc/dcn32/dcn32_resource.h |   15 +-
 .../display/dc/dcn32/dcn32_resource_helpers.c |  183 +-
 .../dc/dcn321/dcn321_dio_link_encoder.c       |    1 -
 .../amd/display/dc/dcn321/dcn321_resource.c   |    6 +-
 .../drm/amd/display/dc/dml/dcn20/dcn20_fpu.c  |    5 +-
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  |  108 +-
 .../dc/dml/dcn32/display_mode_vba_32.c        |   43 +-
 .../dc/dml/dcn32/display_mode_vba_util_32.c   |   33 +-
 .../dc/dml/dcn32/display_mode_vba_util_32.h   |    5 +-
 .../drm/amd/display/dc/dml/display_mode_lib.h |    1 -
 .../drm/amd/display/dc/dml/display_mode_vba.c |    1 +
 .../drm/amd/display/dc/dml/display_mode_vba.h |    1 +
 .../display/dc/gpio/dcn20/hw_factory_dcn20.c  |    6 +-
 .../display/dc/gpio/dcn30/hw_factory_dcn30.c  |    6 +-
 .../display/dc/gpio/dcn32/hw_factory_dcn32.c  |    6 +-
 .../gpu/drm/amd/display/dc/gpio/ddc_regs.h    |    7 +
 .../gpu/drm/amd/display/dc/hdcp/hdcp_msg.c    |    5 +-
 .../gpu/drm/amd/display/dc/inc/core_types.h   |    6 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_ddc.h  |  133 -
 .../gpu/drm/amd/display/dc/inc/dc_link_dp.h   |  160 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_dpia.h |  105 -
 .../drm/amd/display/dc/inc/hw/aux_engine.h    |    8 +-
 .../gpu/drm/amd/display/dc/inc/hw/dchubbub.h  |    1 +
 drivers/gpu/drm/amd/display/dc/inc/link.h     |   92 +
 drivers/gpu/drm/amd/display/dc/link/Makefile  |    6 +-
 .../{core/dc_link_ddc.c => link/link_ddc.c}   |  409 +-
 .../i2caux_interface.h => dc/link/link_ddc.h} |   70 +-
 .../amd/display/dc/link/link_dp_capability.c  | 2169 ++++++
 .../amd/display/dc/link/link_dp_capability.h  |   66 +
 .../drm/amd/display/dc/link/link_dp_dpia.c    |  107 +
 .../drm/amd/display/dc/link/link_dp_dpia.h    |   43 +
 .../drm/amd/display/dc/link/link_dp_dpia_bw.h |   47 +-
 .../gpu/drm/amd/display/dc/link/link_dp_phy.c |  145 +
 .../gpu/drm/amd/display/dc/link/link_dp_phy.h |   51 +
 .../amd/display/dc/link/link_dp_training.c    | 1700 +++++
 .../amd/display/dc/link/link_dp_training.h    |  179 +
 .../dc/link/link_dp_training_128b_132b.c      |  260 +
 .../dc/link/link_dp_training_128b_132b.h      |   42 +
 .../display/dc/link/link_dp_training_8b_10b.c |  415 +
 .../display/dc/link/link_dp_training_8b_10b.h |   61 +
 .../dc/link/link_dp_training_auxless.c        |   80 +
 .../dc/link/link_dp_training_auxless.h        |   35 +
 .../link_dp_training_dpia.c}                  |  308 +-
 .../display/dc/link/link_dp_training_dpia.h   |   41 +
 .../link_dp_training_fixed_vs_pe_retimer.c    |  580 ++
 .../link_dp_training_fixed_vs_pe_retimer.h    |   45 +
 .../{core/dc_link_dpcd.c => link/link_dpcd.c} |   13 +-
 .../amd/display/dc/{inc => link}/link_dpcd.h  |    5 +-
 .../gpu/drm/amd/display/dc/link/link_hpd.c    |  240 +
 .../gpu/drm/amd/display/dc/link/link_hpd.h    |   47 +
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |   16 +-
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   |  168 +-
 .../drm/amd/display/dmub/src/dmub_srv_stat.c  |   22 +-
 .../amd/display/include/ddc_service_types.h   |    5 +
 .../amd/display/modules/freesync/freesync.c   |   64 +-
 112 files changed, 8789 insertions(+), 7854 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/dc_hdmi_types.h
 delete mode 100644 drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
 delete mode 100644 drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/inc/link.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_ddc.c => link/link_ddc.c} (57%)
 rename drivers/gpu/drm/amd/display/{include/i2caux_interface.h => dc/link/link_ddc.h} (52%)
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_capability.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_capability.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_phy.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_dpia.c => link/link_dp_training_dpia.c} (83%)
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_dpcd.c => link/link_dpcd.c} (97%)
 rename drivers/gpu/drm/amd/display/dc/{inc => link}/link_dpcd.h (95%)
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_hpd.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_hpd.h

-- 
2.39.0

[PATCH 01/37] drm/amd/display: Update BW alloc after new DMUB logic

[Rodrigo Siqueira]

From: Mustapha Ghaddar <mghaddar@amd.com>

[WHY]
After introducing new DPIA NOTIFICATION we will need
to update the exiting BW allocation logic

[HOW]
Updated the BW alloc source and header files

Reviewed-by: Meenakshikumar Somasundaram <Meenakshikumar.Somasundaram@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Mustapha Ghaddar <mghaddar@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  2 +-
 .../drm/amd/display/dc/link/link_dp_dpia_bw.h | 47 +++++++++++++++----
 .../drm/amd/display/dmub/src/dmub_srv_stat.c  | 18 +++----
 3 files changed, 49 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 8565bbb75177..3b9315a38b30 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -158,11 +158,11 @@ struct dc_panel_config {
 struct dc_dpia_bw_alloc {
 	int sink_verified_bw;  // The Verified BW that sink can allocated and use that has been verified already
 	int sink_allocated_bw; // The Actual Allocated BW that sink currently allocated
-	int padding_bw;        // The Padding "Un-used" BW allocated by CM for padding reasons
 	int sink_max_bw;       // The Max BW that sink can require/support
 	int estimated_bw;      // The estimated available BW for this DPIA
 	int bw_granularity;    // BW Granularity
 	bool bw_alloc_enabled; // The BW Alloc Mode Support is turned ON for all 3:  DP-Tx & Dpia & CM
+	bool response_ready;   // Response ready from the CM side
 };
 
 /*
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia_bw.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia_bw.h
index 669e995f825f..58eb7b581093 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia_bw.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia_bw.h
@@ -26,13 +26,13 @@
 #ifndef DC_INC_LINK_DP_DPIA_BW_H_
 #define DC_INC_LINK_DP_DPIA_BW_H_
 
-// XXX: TODO: Re-add for Phase 2
-/* Number of Host Routers per motherboard is 2 and 2 DPIA per host router */
-#define MAX_HR_NUM 2
-
-struct dc_host_router_bw_alloc {
-	int max_bw[MAX_HR_NUM];             // The Max BW that each Host Router has available to be shared btw DPIAs
-	int total_estimated_bw[MAX_HR_NUM]; // The Total Verified and available BW that Host Router has
+/*
+ * Host Router BW type
+ */
+enum bw_type {
+	HOST_ROUTER_BW_ESTIMATED,
+	HOST_ROUTER_BW_ALLOCATED,
+	HOST_ROUTER_BW_INVALID,
 };
 
 /*
@@ -61,9 +61,40 @@ void set_usb4_req_bw_req(struct dc_link *link, int req_bw);
  * find out the result of allocating on CM and update structs accordingly
  *
  * @link: pointer to the dc_link struct instance
+ * @bw: Allocated or Estimated BW depending on the result
+ * @result: Response type
+ *
+ * return: none
+ */
+void get_usb4_req_bw_resp(struct dc_link *link, uint8_t bw, uint8_t result);
+
+/*
+ * Return the response_ready flag from dc_link struct
+ *
+ * @link: pointer to the dc_link struct instance
+ *
+ * return: response_ready flag from dc_link struct
+ */
+bool get_cm_response_ready_flag(struct dc_link *link);
+
+/*
+ * Get the Max Available BW or Max Estimated BW for each Host Router
+ *
+ * @link: pointer to the dc_link struct instance
+ * @type: ESTIMATD BW or MAX AVAILABLE BW
+ *
+ * return: response_ready flag from dc_link struct
+ */
+int get_host_router_total_bw(struct dc_link *link, uint8_t type);
+
+/*
+ * Cleanup function for when the dpia is unplugged to reset struct
+ * and perform any required clean up
+ *
+ * @link: pointer to the dc_link struct instance
  *
  * return: none
  */
-void get_usb4_req_bw_resp(struct dc_link *link);
+bool dpia_bw_alloc_unplug(struct dc_link *link);
 
 #endif /* DC_INC_LINK_DP_DPIA_BW_H_ */
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c
index 55a534ec0794..4948f9724db2 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c
@@ -98,19 +98,19 @@ enum dmub_status dmub_srv_stat_get_notification(struct dmub_srv *dmub,
 
 		if (cmd.dpia_notify.payload.header.type == DPIA_NOTIFY__BW_ALLOCATION) {
 
-			if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_failed) {
+			notify->bw_alloc_reply.estimated_bw =
+					cmd.dpia_notify.payload.data.dpia_bw_alloc.estimated_bw;
+			notify->bw_alloc_reply.allocated_bw =
+					cmd.dpia_notify.payload.data.dpia_bw_alloc.allocated_bw;
+
+			if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_failed)
 				notify->result = DPIA_BW_REQ_FAILED;
-			} else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_succeeded) {
+			else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_succeeded)
 				notify->result = DPIA_BW_REQ_SUCCESS;
-				notify->bw_alloc_reply.allocated_bw =
-						cmd.dpia_notify.payload.data.dpia_bw_alloc.allocated_bw;
-			} else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.est_bw_changed) {
+			else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.est_bw_changed)
 				notify->result = DPIA_EST_BW_CHANGED;
-				notify->bw_alloc_reply.estimated_bw =
-						cmd.dpia_notify.payload.data.dpia_bw_alloc.estimated_bw;
-			} else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_alloc_cap_changed) {
+			else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_alloc_cap_changed)
 				notify->result = DPIA_BW_ALLOC_CAPS_CHANGED;
-			}
 		}
 		break;
 	default:
-- 
2.39.0

[PATCH 02/37] Revert "drm/amd/display: Speed up DML fast_validate path"

[Rodrigo Siqueira]

From: Martin Leung <Martin.Leung@amd.com>

This reverts commit ef4e2703d6c81eb08e1cd29d14c819791e6898a6.

It caused corruption in some media players.

Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Martin Leung <Martin.Leung@amd.com>
---
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  |  2 -
 .../dc/dml/dcn32/display_mode_vba_32.c        | 37 +++++++++----------
 .../drm/amd/display/dc/dml/display_mode_lib.h |  1 -
 3 files changed, 17 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index e7459fd50bf9..025139a22e84 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -1564,7 +1564,6 @@ bool dcn32_internal_validate_bw(struct dc *dc,
 		context->bw_ctx.dml.soc.allow_for_pstate_or_stutter_in_vblank_final =
 			dm_prefetch_support_fclk_and_stutter;
 
-		context->bw_ctx.dml.validate_max_state = fast_validate;
 		vlevel = dml_get_voltage_level(&context->bw_ctx.dml, pipes, pipe_cnt);
 
 		/* Last attempt with Prefetch mode 2 (dm_prefetch_support_stutter == 3) */
@@ -1573,7 +1572,6 @@ bool dcn32_internal_validate_bw(struct dc *dc,
 				dm_prefetch_support_stutter;
 			vlevel = dml_get_voltage_level(&context->bw_ctx.dml, pipes, pipe_cnt);
 		}
-		context->bw_ctx.dml.validate_max_state = false;
 
 		if (vlevel < context->bw_ctx.dml.soc.num_states) {
 			memset(split, 0, sizeof(split));
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index bc22078751f8..4b8f5fa0f0ad 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -1707,7 +1707,7 @@ static void mode_support_configuration(struct vba_vars_st *v,
 void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib)
 {
 	struct vba_vars_st *v = &mode_lib->vba;
-	int i, j, start_state;
+	int i, j;
 	unsigned int k, m;
 	unsigned int MaximumMPCCombine;
 	unsigned int NumberOfNonCombinedSurfaceOfMaximumBandwidth;
@@ -1720,10 +1720,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 #endif
 
 	/*MODE SUPPORT, VOLTAGE STATE AND SOC CONFIGURATION*/
-	if (mode_lib->validate_max_state)
-		start_state = v->soc.num_states - 1;
-	else
-		start_state = 0;
+
 	/*Scale Ratio, taps Support Check*/
 
 	mode_lib->vba.ScaleRatioAndTapsSupport = true;
@@ -2012,7 +2009,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 	mode_lib->vba.MPCCombineMethodIncompatible = v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.MPCCombineMethodAsNeededForPStateChangeAndVoltage
 			&& v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.MPCCombineMethodAsPossible;
 
-	for (i = start_state; i < v->soc.num_states; i++) {
+	for (i = 0; i < v->soc.num_states; i++) {
 		for (j = 0; j < 2; j++) {
 			mode_lib->vba.TotalNumberOfActiveDPP[i][j] = 0;
 			mode_lib->vba.TotalAvailablePipesSupport[i][j] = true;
@@ -2289,7 +2286,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 		}
 	}
 
-	for (i = start_state; i < v->soc.num_states; ++i) {
+	for (i = 0; i < v->soc.num_states; ++i) {
 		mode_lib->vba.ExceededMultistreamSlots[i] = false;
 		for (k = 0; k < mode_lib->vba.NumberOfActiveSurfaces; ++k) {
 			if (mode_lib->vba.OutputMultistreamEn[k] == true && mode_lib->vba.OutputMultistreamId[k] == k) {
@@ -2389,7 +2386,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 		}
 	}
 
-	for (i = start_state; i < v->soc.num_states; ++i) {
+	for (i = 0; i < v->soc.num_states; ++i) {
 		mode_lib->vba.DTBCLKRequiredMoreThanSupported[i] = false;
 		for (k = 0; k < mode_lib->vba.NumberOfActiveSurfaces; ++k) {
 			if (mode_lib->vba.BlendingAndTiming[k] == k
@@ -2406,7 +2403,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 		}
 	}
 
-	for (i = start_state; i < v->soc.num_states; ++i) {
+	for (i = 0; i < v->soc.num_states; ++i) {
 		mode_lib->vba.ODMCombine2To1SupportCheckOK[i] = true;
 		mode_lib->vba.ODMCombine4To1SupportCheckOK[i] = true;
 		for (k = 0; k < mode_lib->vba.NumberOfActiveSurfaces; ++k) {
@@ -2424,7 +2421,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 		}
 	}
 
-	for (i = start_state; i < v->soc.num_states; i++) {
+	for (i = 0; i < v->soc.num_states; i++) {
 		mode_lib->vba.DSCCLKRequiredMoreThanSupported[i] = false;
 		for (k = 0; k <= mode_lib->vba.NumberOfActiveSurfaces - 1; k++) {
 			if (mode_lib->vba.BlendingAndTiming[k] == k) {
@@ -2461,7 +2458,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 	/* Check DSC Unit and Slices Support */
 	v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.TotalDSCUnitsRequired = 0;
 
-	for (i = start_state; i < v->soc.num_states; ++i) {
+	for (i = 0; i < v->soc.num_states; ++i) {
 		mode_lib->vba.NotEnoughDSCUnits[i] = false;
 		mode_lib->vba.NotEnoughDSCSlices[i] = false;
 		v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.TotalDSCUnitsRequired = 0;
@@ -2496,7 +2493,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 	}
 
 	/*DSC Delay per state*/
-	for (i = start_state; i < v->soc.num_states; ++i) {
+	for (i = 0; i < v->soc.num_states; ++i) {
 		for (k = 0; k < mode_lib->vba.NumberOfActiveSurfaces; ++k) {
 			mode_lib->vba.DSCDelayPerState[i][k] = dml32_DSCDelayRequirement(
 					mode_lib->vba.RequiresDSC[i][k], mode_lib->vba.ODMCombineEnablePerState[i][k],
@@ -2523,7 +2520,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 
 	//Calculate Swath, DET Configuration, DCFCLKDeepSleep
 	//
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
 			for (k = 0; k < mode_lib->vba.NumberOfActiveSurfaces; ++k) {
 				mode_lib->vba.RequiredDPPCLKThisState[k] = mode_lib->vba.RequiredDPPCLK[i][j][k];
@@ -2658,7 +2655,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 			mode_lib->vba.SurfaceSizeInMALL,
 			&mode_lib->vba.ExceededMALLSize);
 
-	for (i = start_state; i < v->soc.num_states; i++) {
+	for (i = 0; i < v->soc.num_states; i++) {
 		for (j = 0; j < 2; j++) {
 			for (k = 0; k <= mode_lib->vba.NumberOfActiveSurfaces - 1; k++) {
 				mode_lib->vba.swath_width_luma_ub_this_state[k] =
@@ -2885,7 +2882,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 	}
 
 	//Calculate Return BW
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
 			for (k = 0; k <= mode_lib->vba.NumberOfActiveSurfaces - 1; k++) {
 				if (mode_lib->vba.BlendingAndTiming[k] == k) {
@@ -2964,7 +2961,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 			&mode_lib->vba.MinPrefetchMode,
 			&mode_lib->vba.MaxPrefetchMode);
 
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j)
 			mode_lib->vba.DCFCLKState[i][j] = mode_lib->vba.DCFCLKPerState[i];
 	}
@@ -3086,7 +3083,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 				mode_lib->vba.DCFCLKState);
 	} // UseMinimumRequiredDCFCLK == true
 
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
 			mode_lib->vba.ReturnBWPerState[i][j] = dml32_get_return_bw_mbps(&mode_lib->vba.soc, i,
 					mode_lib->vba.HostVMEnable, mode_lib->vba.DCFCLKState[i][j],
@@ -3095,7 +3092,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 	}
 
 	//Re-ordering Buffer Support Check
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
 			if ((mode_lib->vba.ROBBufferSizeInKByte - mode_lib->vba.PixelChunkSizeInKByte) * 1024
 					/ mode_lib->vba.ReturnBWPerState[i][j]
@@ -3117,7 +3114,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 				+ mode_lib->vba.ReadBandwidthChroma[k];
 	}
 
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
 			mode_lib->vba.MaxTotalVerticalActiveAvailableBandwidth[i][j] =
 				dml_min3(mode_lib->vba.ReturnBusWidth * mode_lib->vba.DCFCLKState[i][j]
@@ -3141,7 +3138,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 
 	/* Prefetch Check */
 
-	for (i = start_state; i < (int) v->soc.num_states; ++i) {
+	for (i = 0; i < (int) v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
 
 			mode_lib->vba.TimeCalc = 24 / mode_lib->vba.ProjectedDCFCLKDeepSleep[i][j];
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
index a9d49ef58fb5..3d643d50c3eb 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
@@ -91,7 +91,6 @@ struct display_mode_lib {
 	struct dal_logger *logger;
 	struct dml_funcs funcs;
 	struct _vcs_dpi_display_e2e_pipe_params_st dml_pipe_state[6];
-	bool validate_max_state;
 };
 
 void dml_init_instance(struct display_mode_lib *lib,
-- 
2.39.0

[PATCH 03/37] drm/amd/display: fix multi edp panel instancing

[Rodrigo Siqueira]

From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>

A previous fix attempted to correct mismatch between DM display
targets and dc panel instancing by only counting connected panels.
This behaviour breaks a feature, thus this is an alternative solution
that allows mapping display targets to dc links during mod_power_create.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_link.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 3b9315a38b30..1226ecb625b4 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -338,14 +338,13 @@ static inline bool dc_get_edp_link_panel_inst(const struct dc *dc,
 	int edp_num, i;
 
 	*inst_out = 0;
-	if (link->connector_signal != SIGNAL_TYPE_EDP || !link->local_sink)
+	if (link->connector_signal != SIGNAL_TYPE_EDP)
 		return false;
 	get_edp_links(dc, edp_links, &edp_num);
 	for (i = 0; i < edp_num; i++) {
 		if (link == edp_links[i])
 			break;
-		if (edp_links[i]->local_sink)
-			(*inst_out)++;
+		(*inst_out)++;
 	}
 	return true;
 }
-- 
2.39.0

[PATCH 04/37] drm/amd/display: Fix DPIA link encoder assignment issue

[Rodrigo Siqueira]

From: Cruise Hung <Cruise.Hung@amd.com>

[Why]
The DPIA link encoder (DIG) was not released when a Display XDR 6K
monitor was disconnected. That's because the DPIA link encoder logic
checked the BW when it removed the link encoder for it. And the timing
BW was less than DP link BW.  So, it failed to release the link encoder.
And that caused the DIG was occupied and can't be used.  The reason it
checked the BW is it wants to identify whether this link was using DIG
or HPO. It skips if it's not DIG.

[How]
Not to check the BW when it removes the link encoder because it's
already in the assignment table, it must be the DIG.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Cruise Hung <Cruise.Hung@amd.com>
---
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c | 57 ++++++++++---------
 1 file changed, 30 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
index 614f022d1cff..049e755792e6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
@@ -305,15 +305,17 @@ void link_enc_cfg_link_encs_assign(
 	for (i = 0; i < stream_count; i++) {
 		struct dc_stream_state *stream = streams[i];
 
+		/* skip it if the link is mappable endpoint. */
+		if (stream->link->is_dig_mapping_flexible)
+			continue;
+
 		/* Skip stream if not supported by DIG link encoder. */
 		if (!is_dig_link_enc_stream(stream))
 			continue;
 
 		/* Physical endpoints have a fixed mapping to DIG link encoders. */
-		if (!stream->link->is_dig_mapping_flexible) {
-			eng_id = stream->link->eng_id;
-			add_link_enc_assignment(state, stream, eng_id);
-		}
+		eng_id = stream->link->eng_id;
+		add_link_enc_assignment(state, stream, eng_id);
 	}
 
 	/* (b) Retain previous assignments for mappable endpoints if encoders still available. */
@@ -325,11 +327,12 @@ void link_enc_cfg_link_encs_assign(
 		for (i = 0; i < stream_count; i++) {
 			struct dc_stream_state *stream = state->streams[i];
 
-			/* Skip stream if not supported by DIG link encoder. */
-			if (!is_dig_link_enc_stream(stream))
+			/* Skip it if the link is NOT mappable endpoint. */
+			if (!stream->link->is_dig_mapping_flexible)
 				continue;
 
-			if (!stream->link->is_dig_mapping_flexible)
+			/* Skip stream if not supported by DIG link encoder. */
+			if (!is_dig_link_enc_stream(stream))
 				continue;
 
 			for (j = 0; j < prev_state->stream_count; j++) {
@@ -338,6 +341,7 @@ void link_enc_cfg_link_encs_assign(
 				if (stream == prev_stream && stream->link == prev_stream->link &&
 						prev_state->res_ctx.link_enc_cfg_ctx.link_enc_assignments[j].valid) {
 					eng_id = prev_state->res_ctx.link_enc_cfg_ctx.link_enc_assignments[j].eng_id;
+
 					if (is_avail_link_enc(state, eng_id, stream))
 						add_link_enc_assignment(state, stream, eng_id);
 				}
@@ -350,6 +354,15 @@ void link_enc_cfg_link_encs_assign(
 
 	for (i = 0; i < stream_count; i++) {
 		struct dc_stream_state *stream = streams[i];
+		struct link_encoder *link_enc = NULL;
+
+		/* Skip it if the link is NOT mappable endpoint. */
+		if (!stream->link->is_dig_mapping_flexible)
+			continue;
+
+		/* Skip if encoder assignment retained in step (b) above. */
+		if (stream->link_enc)
+			continue;
 
 		/* Skip stream if not supported by DIG link encoder. */
 		if (!is_dig_link_enc_stream(stream)) {
@@ -358,24 +371,18 @@ void link_enc_cfg_link_encs_assign(
 		}
 
 		/* Mappable endpoints have a flexible mapping to DIG link encoders. */
-		if (stream->link->is_dig_mapping_flexible) {
-			struct link_encoder *link_enc = NULL;
 
-			/* Skip if encoder assignment retained in step (b) above. */
-			if (stream->link_enc)
-				continue;
+		/* For MST, multiple streams will share the same link / display
+		 * endpoint. These streams should use the same link encoder
+		 * assigned to that endpoint.
+		 */
+		link_enc = get_link_enc_used_by_link(state, stream->link);
+		if (link_enc == NULL)
+			eng_id = find_first_avail_link_enc(stream->ctx, state);
+		else
+			eng_id =  link_enc->preferred_engine;
 
-			/* For MST, multiple streams will share the same link / display
-			 * endpoint. These streams should use the same link encoder
-			 * assigned to that endpoint.
-			 */
-			link_enc = get_link_enc_used_by_link(state, stream->link);
-			if (link_enc == NULL)
-				eng_id = find_first_avail_link_enc(stream->ctx, state);
-			else
-				eng_id =  link_enc->preferred_engine;
-			add_link_enc_assignment(state, stream, eng_id);
-		}
+		add_link_enc_assignment(state, stream, eng_id);
 	}
 
 	link_enc_cfg_validate(dc, state);
@@ -420,10 +427,6 @@ void link_enc_cfg_link_enc_unassign(
 {
 	enum engine_id eng_id = ENGINE_ID_UNKNOWN;
 
-	/* Only DIG link encoders. */
-	if (!is_dig_link_enc_stream(stream))
-		return;
-
 	if (stream->link_enc)
 		eng_id = stream->link_enc->preferred_engine;
 
-- 
2.39.0

[PATCH 05/37] drm/amd/display: Implement FIFO enable sequence on DCN32

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

[WHY?]
FIFO enable sequence is incomplete as it is currently implemented in FW,
and requires reset to prevent the FIFO to be enabled in an invalid
state. This cannot be done until DIG FE is connected to the BE.

[HOW?]
Add FIFO enable sequence in driver for dcn32 with reset after DIG FE is
connected to BE.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../dc/dcn32/dcn32_dio_stream_encoder.c       | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
index d19fc93dbc75..7d09c62a405a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
@@ -421,6 +421,33 @@ static void enc32_set_dig_input_mode(struct stream_encoder *enc, unsigned int pi
 	REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_OUTPUT_PIXEL_MODE, pix_per_container == 2 ? 0x1 : 0x0);
 }
 
+static void enc32_reset_fifo(struct stream_encoder *enc, bool reset)
+{
+	struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
+	uint32_t reset_val = reset ? 1 : 0;
+	uint32_t is_symclk_on;
+
+	REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_RESET, reset_val);
+	REG_GET(DIG_FE_CNTL, DIG_SYMCLK_FE_ON, &is_symclk_on);
+
+	if (is_symclk_on)
+		REG_WAIT(DIG_FIFO_CTRL0, DIG_FIFO_RESET_DONE, reset_val, 10, 5000);
+	else
+		udelay(10);
+}
+
+static void enc32_enable_fifo(struct stream_encoder *enc)
+{
+	struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
+
+	REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_READ_START_LEVEL, 0x7);
+
+	enc32_reset_fifo(enc, true);
+	enc32_reset_fifo(enc, false);
+
+	REG_UPDATE(DIG_FIFO_CTRL0, DIG_FIFO_ENABLE, 1);
+}
+
 static const struct stream_encoder_funcs dcn32_str_enc_funcs = {
 	.dp_set_odm_combine =
 		enc32_dp_set_odm_combine,
@@ -466,6 +493,7 @@ static const struct stream_encoder_funcs dcn32_str_enc_funcs = {
 	.hdmi_reset_stream_attribute = enc1_reset_hdmi_stream_attribute,
 
 	.set_input_mode = enc32_set_dig_input_mode,
+	.enable_fifo = enc32_enable_fifo,
 };
 
 void dcn32_dio_stream_encoder_construct(
-- 
2.39.0

[PATCH 06/37] drm/amd/display: refactor hpd logic from dc_link to link_hpd

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

[why]
Factor out hpd handling logic from generic dc link file.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 224 +---------------
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  |  16 --
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  22 +-
 .../display/dc/dce110/dce110_hw_sequencer.c   |   3 +-
 drivers/gpu/drm/amd/display/dc/inc/link.h     |  47 ++++
 drivers/gpu/drm/amd/display/dc/link/Makefile  |   3 +-
 .../gpu/drm/amd/display/dc/link/link_hpd.c    | 240 ++++++++++++++++++
 .../gpu/drm/amd/display/dc/link/link_hpd.h    |  47 ++++
 8 files changed, 357 insertions(+), 245 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/inc/link.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_hpd.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_hpd.h

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index ee20b4d3afd4..13e33f581e73 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -36,6 +36,7 @@
 #include "dc_link_dpia.h"
 #include "dc_link_ddc.h"
 #include "link_hwss.h"
+#include "link.h"
 #include "opp.h"
 
 #include "link_encoder.h"
@@ -52,6 +53,7 @@
 #include "inc/link_enc_cfg.h"
 #include "inc/link_dpcd.h"
 #include "link/link_dp_trace.h"
+#include "link/link_hpd.h"
 
 #include "dc/dcn30/dcn30_vpg.h"
 
@@ -102,108 +104,6 @@ static void dc_link_destruct(struct dc_link *link)
 		dc_sink_release(link->remote_sinks[i]);
 }
 
-struct gpio *get_hpd_gpio(struct dc_bios *dcb,
-			  struct graphics_object_id link_id,
-			  struct gpio_service *gpio_service)
-{
-	enum bp_result bp_result;
-	struct graphics_object_hpd_info hpd_info;
-	struct gpio_pin_info pin_info;
-
-	if (dcb->funcs->get_hpd_info(dcb, link_id, &hpd_info) != BP_RESULT_OK)
-		return NULL;
-
-	bp_result = dcb->funcs->get_gpio_pin_info(dcb,
-		hpd_info.hpd_int_gpio_uid, &pin_info);
-
-	if (bp_result != BP_RESULT_OK) {
-		ASSERT(bp_result == BP_RESULT_NORECORD);
-		return NULL;
-	}
-
-	return dal_gpio_service_create_irq(gpio_service,
-					   pin_info.offset,
-					   pin_info.mask);
-}
-
-/*
- *  Function: program_hpd_filter
- *
- *  @brief
- *     Programs HPD filter on associated HPD line
- *
- *  @param [in] delay_on_connect_in_ms: Connect filter timeout
- *  @param [in] delay_on_disconnect_in_ms: Disconnect filter timeout
- *
- *  @return
- *     true on success, false otherwise
- */
-static bool program_hpd_filter(const struct dc_link *link)
-{
-	bool result = false;
-	struct gpio *hpd;
-	int delay_on_connect_in_ms = 0;
-	int delay_on_disconnect_in_ms = 0;
-
-	if (link->is_hpd_filter_disabled)
-		return false;
-	/* Verify feature is supported */
-	switch (link->connector_signal) {
-	case SIGNAL_TYPE_DVI_SINGLE_LINK:
-	case SIGNAL_TYPE_DVI_DUAL_LINK:
-	case SIGNAL_TYPE_HDMI_TYPE_A:
-		/* Program hpd filter */
-		delay_on_connect_in_ms = 500;
-		delay_on_disconnect_in_ms = 100;
-		break;
-	case SIGNAL_TYPE_DISPLAY_PORT:
-	case SIGNAL_TYPE_DISPLAY_PORT_MST:
-		/* Program hpd filter to allow DP signal to settle */
-		/* 500:	not able to detect MST <-> SST switch as HPD is low for
-		 * only 100ms on DELL U2413
-		 * 0: some passive dongle still show aux mode instead of i2c
-		 * 20-50: not enough to hide bouncing HPD with passive dongle.
-		 * also see intermittent i2c read issues.
-		 */
-		delay_on_connect_in_ms = 80;
-		delay_on_disconnect_in_ms = 0;
-		break;
-	case SIGNAL_TYPE_LVDS:
-	case SIGNAL_TYPE_EDP:
-	default:
-		/* Don't program hpd filter */
-		return false;
-	}
-
-	/* Obtain HPD handle */
-	hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
-			   link->ctx->gpio_service);
-
-	if (!hpd)
-		return result;
-
-	/* Setup HPD filtering */
-	if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) {
-		struct gpio_hpd_config config;
-
-		config.delay_on_connect = delay_on_connect_in_ms;
-		config.delay_on_disconnect = delay_on_disconnect_in_ms;
-
-		dal_irq_setup_hpd_filter(hpd, &config);
-
-		dal_gpio_close(hpd);
-
-		result = true;
-	} else {
-		ASSERT_CRITICAL(false);
-	}
-
-	/* Release HPD handle */
-	dal_gpio_destroy_irq(&hpd);
-
-	return result;
-}
-
 bool dc_link_wait_for_t12(struct dc_link *link)
 {
 	if (link->connector_signal == SIGNAL_TYPE_EDP && link->dc->hwss.edp_wait_for_T12) {
@@ -226,7 +126,6 @@ bool dc_link_wait_for_t12(struct dc_link *link)
 bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type)
 {
 	uint32_t is_hpd_high = 0;
-	struct gpio *hpd_pin;
 
 	if (link->connector_signal == SIGNAL_TYPE_LVDS) {
 		*type = dc_connection_single;
@@ -250,17 +149,9 @@ bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type)
 		return true;
 	}
 
-	/* todo: may need to lock gpio access */
-	hpd_pin = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
-			       link->ctx->gpio_service);
-	if (!hpd_pin)
+	if (!query_hpd_status(link, &is_hpd_high))
 		goto hpd_gpio_failure;
 
-	dal_gpio_open(hpd_pin, GPIO_MODE_INTERRUPT);
-	dal_gpio_get_value(hpd_pin, &is_hpd_high);
-	dal_gpio_close(hpd_pin);
-	dal_gpio_destroy_irq(&hpd_pin);
-
 	if (is_hpd_high) {
 		*type = dc_connection_single;
 		/* TODO: need to do the actual detection */
@@ -1367,58 +1258,6 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason)
 	return is_local_sink_detect_success && !is_delegated_to_mst_top_mgr;
 }
 
-bool dc_link_get_hpd_state(struct dc_link *dc_link)
-{
-	uint32_t state;
-
-	dal_gpio_lock_pin(dc_link->hpd_gpio);
-	dal_gpio_get_value(dc_link->hpd_gpio, &state);
-	dal_gpio_unlock_pin(dc_link->hpd_gpio);
-
-	return state;
-}
-
-static enum hpd_source_id get_hpd_line(struct dc_link *link)
-{
-	struct gpio *hpd;
-	enum hpd_source_id hpd_id;
-
-	hpd_id = HPD_SOURCEID_UNKNOWN;
-
-	hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
-			   link->ctx->gpio_service);
-
-	if (hpd) {
-		switch (dal_irq_get_source(hpd)) {
-		case DC_IRQ_SOURCE_HPD1:
-			hpd_id = HPD_SOURCEID1;
-		break;
-		case DC_IRQ_SOURCE_HPD2:
-			hpd_id = HPD_SOURCEID2;
-		break;
-		case DC_IRQ_SOURCE_HPD3:
-			hpd_id = HPD_SOURCEID3;
-		break;
-		case DC_IRQ_SOURCE_HPD4:
-			hpd_id = HPD_SOURCEID4;
-		break;
-		case DC_IRQ_SOURCE_HPD5:
-			hpd_id = HPD_SOURCEID5;
-		break;
-		case DC_IRQ_SOURCE_HPD6:
-			hpd_id = HPD_SOURCEID6;
-		break;
-		default:
-			BREAK_TO_DEBUGGER();
-		break;
-		}
-
-		dal_gpio_destroy_irq(&hpd);
-	}
-
-	return hpd_id;
-}
-
 static enum channel_id get_ddc_line(struct dc_link *link)
 {
 	struct ddc *ddc;
@@ -1583,7 +1422,7 @@ static bool dc_link_construct_legacy(struct dc_link *link,
 	if (link->dc->res_pool->funcs->link_init)
 		link->dc->res_pool->funcs->link_init(link);
 
-	link->hpd_gpio = get_hpd_gpio(link->ctx->dc_bios, link->link_id,
+	link->hpd_gpio = link_get_hpd_gpio(link->ctx->dc_bios, link->link_id,
 				      link->ctx->gpio_service);
 
 	if (link->hpd_gpio) {
@@ -4531,51 +4370,6 @@ void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable)
 	dc->hwss.set_avmute(pipe_ctx, enable);
 }
 
-/**
- *  dc_link_enable_hpd_filter:
- *     If enable is true, programs HPD filter on associated HPD line using
- *     delay_on_disconnect/delay_on_connect values dependent on
- *     link->connector_signal
- *
- *     If enable is false, programs HPD filter on associated HPD line with no
- *     delays on connect or disconnect
- *
- *  @link:   pointer to the dc link
- *  @enable: boolean specifying whether to enable hbd
- */
-void dc_link_enable_hpd_filter(struct dc_link *link, bool enable)
-{
-	struct gpio *hpd;
-
-	if (enable) {
-		link->is_hpd_filter_disabled = false;
-		program_hpd_filter(link);
-	} else {
-		link->is_hpd_filter_disabled = true;
-		/* Obtain HPD handle */
-		hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);
-
-		if (!hpd)
-			return;
-
-		/* Setup HPD filtering */
-		if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) {
-			struct gpio_hpd_config config;
-
-			config.delay_on_connect = 0;
-			config.delay_on_disconnect = 0;
-
-			dal_irq_setup_hpd_filter(hpd, &config);
-
-			dal_gpio_close(hpd);
-		} else {
-			ASSERT_CRITICAL(false);
-		}
-		/* Release HPD handle */
-		dal_gpio_destroy_irq(&hpd);
-	}
-}
-
 void dc_link_set_drive_settings(struct dc *dc,
 				struct link_training_settings *lt_settings,
 				const struct dc_link *link)
@@ -4663,16 +4457,6 @@ void dc_link_set_preferred_training_settings(struct dc *dc,
 		dc_link_set_preferred_link_settings(dc, &link->preferred_link_setting, link);
 }
 
-void dc_link_enable_hpd(const struct dc_link *link)
-{
-	dc_link_dp_enable_hpd(link);
-}
-
-void dc_link_disable_hpd(const struct dc_link *link)
-{
-	dc_link_dp_disable_hpd(link);
-}
-
 void dc_link_set_test_pattern(struct dc_link *link,
 			      enum dp_test_pattern test_pattern,
 			      enum dp_test_pattern_color_space test_pattern_color_space,
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index d74ffc89810f..51945593f74b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -5866,22 +5866,6 @@ void detect_edp_sink_caps(struct dc_link *link)
 			sizeof(link->dpcd_caps.alpm_caps.raw));
 }
 
-void dc_link_dp_enable_hpd(const struct dc_link *link)
-{
-	struct link_encoder *encoder = link->link_enc;
-
-	if (encoder != NULL && encoder->funcs->enable_hpd != NULL)
-		encoder->funcs->enable_hpd(encoder);
-}
-
-void dc_link_dp_disable_hpd(const struct dc_link *link)
-{
-	struct link_encoder *encoder = link->link_enc;
-
-	if (encoder != NULL && encoder->funcs->enable_hpd != NULL)
-		encoder->funcs->disable_hpd(encoder);
-}
-
 static bool is_dp_phy_pattern(enum dp_test_pattern test_pattern)
 {
 	if ((DP_TEST_PATTERN_PHY_PATTERN_BEGIN <= test_pattern &&
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 1226ecb625b4..fbd6f11a63db 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -479,10 +479,6 @@ enum link_training_result dc_link_dp_sync_lt_attempt(
 
 bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down);
 
-void dc_link_dp_enable_hpd(const struct dc_link *link);
-
-void dc_link_dp_disable_hpd(const struct dc_link *link);
-
 bool dc_link_dp_set_test_pattern(
 	struct dc_link *link,
 	enum dp_test_pattern test_pattern,
@@ -493,6 +489,21 @@ bool dc_link_dp_set_test_pattern(
 
 bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap);
 
+/**
+ *****************************************************************************
+ *  Function: dc_link_enable_hpd_filter
+ *
+ *  @brief
+ *     If enable is true, programs HPD filter on associated HPD line to default
+ *     values dependent on link->connector_signal
+ *
+ *     If enable is false, programs HPD filter on associated HPD line with no
+ *     delays on connect or disconnect
+ *
+ *  @param [in] link: pointer to the dc link
+ *  @param [in] enable: boolean specifying whether to enable hbd
+ *****************************************************************************
+ */
 void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
 
 bool dc_link_is_dp_sink_present(struct dc_link *link);
@@ -565,9 +576,6 @@ void dc_get_cur_link_res_map(const struct dc *dc, uint32_t *map);
 /* restore link resource allocation state from a snapshot */
 void dc_restore_link_res_map(const struct dc *dc, uint32_t *map);
 void dc_link_clear_dprx_states(struct dc_link *link);
-struct gpio *get_hpd_gpio(struct dc_bios *dcb,
-		struct graphics_object_id link_id,
-		struct gpio_service *gpio_service);
 void dp_trace_reset(struct dc_link *link);
 bool dc_dp_trace_is_initialized(struct dc_link *link);
 unsigned long long dc_dp_trace_get_lt_end_timestamp(struct dc_link *link,
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 16e3b079fc56..358431f0d98a 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -46,6 +46,7 @@
 #include "link_encoder.h"
 #include "link_enc_cfg.h"
 #include "link_hwss.h"
+#include "link.h"
 #include "dc_link_dp.h"
 #include "dccg.h"
 #include "clock_source.h"
@@ -737,7 +738,7 @@ void dce110_edp_wait_for_hpd_ready(
 
 	/* obtain HPD */
 	/* TODO what to do with this? */
-	hpd = get_hpd_gpio(ctx->dc_bios, connector, ctx->gpio_service);
+	hpd = link_get_hpd_gpio(ctx->dc_bios, connector, ctx->gpio_service);
 
 	if (!hpd) {
 		BREAK_TO_DEBUGGER();
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link.h b/drivers/gpu/drm/amd/display/dc/inc/link.h
new file mode 100644
index 000000000000..51ddf7a34d98
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/inc/link.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DC_LINK_H__
+#define __DC_LINK_H__
+
+/* FILE POLICY AND INTENDED USAGE:
+ *
+ * This header declares link functions exposed to dc. All functions must have
+ * "link_" as prefix. For example link_run_my_function. This header is strictly
+ * private in dc and should never be included in other header files. dc
+ * components should include this header in their .c files in order to access
+ * functions in link folder. This file should never include any header files in
+ * link folder. If there is a need to expose a function declared in one of
+ * header files in side link folder, you need to move the function declaration
+ * into this file and prefix it with "link_".
+ */
+#include "core_types.h"
+#include "dc_link.h"
+
+struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
+		struct graphics_object_id link_id,
+		struct gpio_service *gpio_service);
+
+#endif /* __DC_LINK_HPD_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index 054c2a727eb2..835a2febf2db 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -23,7 +23,8 @@
 # It abstracts the control and status of back end pipe such as DIO, HPO, DPIA,
 # PHY, HPD, DDC and etc).
 
-LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o
+LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
+link_hpd.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_hpd.c b/drivers/gpu/drm/amd/display/dc/link/link_hpd.c
new file mode 100644
index 000000000000..5f39dfe06e9a
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_hpd.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ *
+ * This file implements functions that manage basic HPD components such as gpio.
+ * It also provides wrapper functions to execute HPD related programming. This
+ * file only manages basic HPD functionality. It doesn't manage detection or
+ * feature or signal specific HPD behaviors.
+ */
+#include "link_hpd.h"
+#include "gpio_service_interface.h"
+
+bool dc_link_get_hpd_state(struct dc_link *dc_link)
+{
+	uint32_t state;
+
+	dal_gpio_lock_pin(dc_link->hpd_gpio);
+	dal_gpio_get_value(dc_link->hpd_gpio, &state);
+	dal_gpio_unlock_pin(dc_link->hpd_gpio);
+
+	return state;
+}
+
+void dc_link_enable_hpd(const struct dc_link *link)
+{
+	struct link_encoder *encoder = link->link_enc;
+
+	if (encoder != NULL && encoder->funcs->enable_hpd != NULL)
+		encoder->funcs->enable_hpd(encoder);
+}
+
+void dc_link_disable_hpd(const struct dc_link *link)
+{
+	struct link_encoder *encoder = link->link_enc;
+
+	if (encoder != NULL && encoder->funcs->enable_hpd != NULL)
+		encoder->funcs->disable_hpd(encoder);
+}
+
+void dc_link_enable_hpd_filter(struct dc_link *link, bool enable)
+{
+	struct gpio *hpd;
+
+	if (enable) {
+		link->is_hpd_filter_disabled = false;
+		program_hpd_filter(link);
+	} else {
+		link->is_hpd_filter_disabled = true;
+		/* Obtain HPD handle */
+		hpd = link_get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);
+
+		if (!hpd)
+			return;
+
+		/* Setup HPD filtering */
+		if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) {
+			struct gpio_hpd_config config;
+
+			config.delay_on_connect = 0;
+			config.delay_on_disconnect = 0;
+
+			dal_irq_setup_hpd_filter(hpd, &config);
+
+			dal_gpio_close(hpd);
+		} else {
+			ASSERT_CRITICAL(false);
+		}
+		/* Release HPD handle */
+		dal_gpio_destroy_irq(&hpd);
+	}
+}
+
+struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
+			  struct graphics_object_id link_id,
+			  struct gpio_service *gpio_service)
+{
+	enum bp_result bp_result;
+	struct graphics_object_hpd_info hpd_info;
+	struct gpio_pin_info pin_info;
+
+	if (dcb->funcs->get_hpd_info(dcb, link_id, &hpd_info) != BP_RESULT_OK)
+		return NULL;
+
+	bp_result = dcb->funcs->get_gpio_pin_info(dcb,
+		hpd_info.hpd_int_gpio_uid, &pin_info);
+
+	if (bp_result != BP_RESULT_OK) {
+		ASSERT(bp_result == BP_RESULT_NORECORD);
+		return NULL;
+	}
+
+	return dal_gpio_service_create_irq(gpio_service,
+					   pin_info.offset,
+					   pin_info.mask);
+}
+
+bool query_hpd_status(struct dc_link *link, uint32_t *is_hpd_high)
+{
+	struct gpio *hpd_pin = link_get_hpd_gpio(
+			link->ctx->dc_bios, link->link_id,
+			link->ctx->gpio_service);
+	if (!hpd_pin)
+		return false;
+
+	dal_gpio_open(hpd_pin, GPIO_MODE_INTERRUPT);
+	dal_gpio_get_value(hpd_pin, is_hpd_high);
+	dal_gpio_close(hpd_pin);
+	dal_gpio_destroy_irq(&hpd_pin);
+	return true;
+}
+
+enum hpd_source_id get_hpd_line(struct dc_link *link)
+{
+	struct gpio *hpd;
+	enum hpd_source_id hpd_id;
+
+		hpd_id = HPD_SOURCEID_UNKNOWN;
+
+	hpd = link_get_hpd_gpio(link->ctx->dc_bios, link->link_id,
+			   link->ctx->gpio_service);
+
+	if (hpd) {
+		switch (dal_irq_get_source(hpd)) {
+		case DC_IRQ_SOURCE_HPD1:
+			hpd_id = HPD_SOURCEID1;
+		break;
+		case DC_IRQ_SOURCE_HPD2:
+			hpd_id = HPD_SOURCEID2;
+		break;
+		case DC_IRQ_SOURCE_HPD3:
+			hpd_id = HPD_SOURCEID3;
+		break;
+		case DC_IRQ_SOURCE_HPD4:
+			hpd_id = HPD_SOURCEID4;
+		break;
+		case DC_IRQ_SOURCE_HPD5:
+			hpd_id = HPD_SOURCEID5;
+		break;
+		case DC_IRQ_SOURCE_HPD6:
+			hpd_id = HPD_SOURCEID6;
+		break;
+		default:
+			BREAK_TO_DEBUGGER();
+		break;
+		}
+
+		dal_gpio_destroy_irq(&hpd);
+	}
+
+	return hpd_id;
+}
+
+bool program_hpd_filter(const struct dc_link *link)
+{
+	bool result = false;
+	struct gpio *hpd;
+	int delay_on_connect_in_ms = 0;
+	int delay_on_disconnect_in_ms = 0;
+
+	if (link->is_hpd_filter_disabled)
+		return false;
+	/* Verify feature is supported */
+	switch (link->connector_signal) {
+	case SIGNAL_TYPE_DVI_SINGLE_LINK:
+	case SIGNAL_TYPE_DVI_DUAL_LINK:
+	case SIGNAL_TYPE_HDMI_TYPE_A:
+		/* Program hpd filter */
+		delay_on_connect_in_ms = 500;
+		delay_on_disconnect_in_ms = 100;
+		break;
+	case SIGNAL_TYPE_DISPLAY_PORT:
+	case SIGNAL_TYPE_DISPLAY_PORT_MST:
+		/* Program hpd filter to allow DP signal to settle */
+		/* 500:	not able to detect MST <-> SST switch as HPD is low for
+		 * only 100ms on DELL U2413
+		 * 0: some passive dongle still show aux mode instead of i2c
+		 * 20-50: not enough to hide bouncing HPD with passive dongle.
+		 * also see intermittent i2c read issues.
+		 */
+		delay_on_connect_in_ms = 80;
+		delay_on_disconnect_in_ms = 0;
+		break;
+	case SIGNAL_TYPE_LVDS:
+	case SIGNAL_TYPE_EDP:
+	default:
+		/* Don't program hpd filter */
+		return false;
+	}
+
+	/* Obtain HPD handle */
+	hpd = link_get_hpd_gpio(link->ctx->dc_bios, link->link_id,
+			   link->ctx->gpio_service);
+
+	if (!hpd)
+		return result;
+
+	/* Setup HPD filtering */
+	if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) {
+		struct gpio_hpd_config config;
+
+		config.delay_on_connect = delay_on_connect_in_ms;
+		config.delay_on_disconnect = delay_on_disconnect_in_ms;
+
+		dal_irq_setup_hpd_filter(hpd, &config);
+
+		dal_gpio_close(hpd);
+
+		result = true;
+	} else {
+		ASSERT_CRITICAL(false);
+	}
+
+	/* Release HPD handle */
+	dal_gpio_destroy_irq(&hpd);
+
+	return result;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_hpd.h b/drivers/gpu/drm/amd/display/dc/link/link_hpd.h
new file mode 100644
index 000000000000..3d122def0c88
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_hpd.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_HPD_H__
+#define __DC_LINK_HPD_H__
+#include "link.h"
+
+enum hpd_source_id get_hpd_line(struct dc_link *link);
+/*
+ *  Function: program_hpd_filter
+ *
+ *  @brief
+ *     Programs HPD filter on associated HPD line to default values.
+ *
+ *  @return
+ *     true on success, false otherwise
+ */
+bool program_hpd_filter(const struct dc_link *link);
+/* Query hot plug status of USB4 DP tunnel.
+ * Returns true if HPD high.
+ */
+bool dpia_query_hpd_status(struct dc_link *link);
+bool query_hpd_status(struct dc_link *link, uint32_t *is_hpd_high);
+#endif /* __DC_LINK_HPD_H__ */
-- 
2.39.0

[PATCH 07/37] drm/amd/display: refactor ddc logic from dc_link_ddc to link_ddc

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

[why]
1. Move dd_link_ddc functions to link_ddc.
2. Move link ddc functions declaration exposed in dc to link.h
3. Move link ddc functions declaration exposed in dm to dc_link.h
4. Remove i2caux_interface.h file

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |   1 -
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |   2 -
 drivers/gpu/drm/amd/display/dc/Makefile       |   4 +-
 .../gpu/drm/amd/display/dc/bios/bios_parser.c |   1 -
 .../drm/amd/display/dc/bios/bios_parser2.c    |   1 -
 drivers/gpu/drm/amd/display/dc/core/dc.c      |   5 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 200 ++++++++-
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  |  10 +-
 drivers/gpu/drm/amd/display/dc/dc_ddc_types.h |  28 ++
 .../gpu/drm/amd/display/dc/dc_hdmi_types.h    | 114 +++++
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  10 +
 drivers/gpu/drm/amd/display/dc/dc_types.h     |   1 +
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.h  |   2 +-
 .../drm/amd/display/dc/dce/dce_link_encoder.c |   1 -
 .../amd/display/dc/dcn10/dcn10_link_encoder.c |   1 -
 .../amd/display/dc/dcn20/dcn20_link_encoder.c |   1 -
 .../drm/amd/display/dc/dcn20/dcn20_resource.c |   6 +-
 .../display/dc/dcn201/dcn201_link_encoder.c   |   1 -
 .../amd/display/dc/dcn21/dcn21_link_encoder.c |   1 -
 .../display/dc/dcn30/dcn30_dio_link_encoder.c |   1 -
 .../drm/amd/display/dc/dcn30/dcn30_resource.c |   6 +-
 .../dc/dcn301/dcn301_dio_link_encoder.c       |   1 -
 .../amd/display/dc/dcn302/dcn302_resource.c   |  16 +
 .../amd/display/dc/dcn303/dcn303_resource.c   |   6 +-
 .../display/dc/dcn31/dcn31_dio_link_encoder.c |   1 -
 .../display/dc/dcn32/dcn32_dio_link_encoder.c |   1 -
 .../drm/amd/display/dc/dcn32/dcn32_resource.c |   6 +-
 .../dc/dcn321/dcn321_dio_link_encoder.c       |   1 -
 .../amd/display/dc/dcn321/dcn321_resource.c   |   6 +-
 .../gpu/drm/amd/display/dc/hdcp/hdcp_msg.c    |   3 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_ddc.h  | 133 ------
 .../drm/amd/display/dc/inc/hw/aux_engine.h    |   8 +-
 drivers/gpu/drm/amd/display/dc/inc/link.h     |  37 ++
 drivers/gpu/drm/amd/display/dc/link/Makefile  |   2 +-
 .../{core/dc_link_ddc.c => link/link_ddc.c}   | 409 +++---------------
 .../i2caux_interface.h => dc/link/link_ddc.h} |  69 +--
 36 files changed, 512 insertions(+), 584 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/dc_hdmi_types.h
 delete mode 100644 drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_ddc.c => link/link_ddc.c} (57%)
 rename drivers/gpu/drm/amd/display/{include/i2caux_interface.h => dc/link/link_ddc.h} (52%)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index b4d60eedbcbf..28f03c558af1 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -66,7 +66,6 @@
 
 #include "ivsrcid/ivsrcid_vislands30.h"
 
-#include "i2caux_interface.h"
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/types.h>
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 41f35d75d0a8..bbeeee7c5d7c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -39,12 +39,10 @@
 #include "dc.h"
 #include "dm_helpers.h"
 
-#include "dc_link_ddc.h"
 #include "dc_link_dp.h"
 #include "ddc_service_types.h"
 #include "dpcd_defs.h"
 
-#include "i2caux_interface.h"
 #include "dmub_cmd.h"
 #if defined(CONFIG_DEBUG_FS)
 #include "amdgpu_dm_debugfs.h"
diff --git a/drivers/gpu/drm/amd/display/dc/Makefile b/drivers/gpu/drm/amd/display/dc/Makefile
index b9effadfc4bb..4438f3c16636 100644
--- a/drivers/gpu/drm/amd/display/dc/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/Makefile
@@ -64,8 +64,8 @@ AMD_DC = $(addsuffix /Makefile, $(addprefix $(FULL_AMD_DISPLAY_PATH)/dc/,$(DC_LI
 
 include $(AMD_DC)
 
-DISPLAY_CORE = dc.o  dc_stat.o dc_link.o dc_resource.o dc_hw_sequencer.o dc_sink.o \
-dc_surface.o dc_link_dp.o dc_link_ddc.o dc_debug.o dc_stream.o \
+DISPLAY_CORE = dc.o dc_stat.o dc_link.o dc_resource.o dc_hw_sequencer.o dc_sink.o \
+dc_surface.o dc_link_dp.o dc_debug.o dc_stream.o \
 dc_link_enc_cfg.o dc_link_dpia.o dc_link_dpcd.o
 
 DISPLAY_CORE += dc_vm_helper.o
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
index a1a00f432168..27af9d3c2b73 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
@@ -33,7 +33,6 @@
 #include "include/gpio_service_interface.h"
 #include "include/grph_object_ctrl_defs.h"
 #include "include/bios_parser_interface.h"
-#include "include/i2caux_interface.h"
 #include "include/logger_interface.h"
 
 #include "command_table.h"
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index 074e70a5c458..8ca50c088858 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -32,7 +32,6 @@
 #include "dc_bios_types.h"
 #include "include/grph_object_ctrl_defs.h"
 #include "include/bios_parser_interface.h"
-#include "include/i2caux_interface.h"
 #include "include/logger_interface.h"
 
 #include "command_table2.h"
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 2c18c8527079..e4b0a47c283b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -33,6 +33,7 @@
 
 #include "resource.h"
 
+#include "gpio_service_interface.h"
 #include "clk_mgr.h"
 #include "clock_source.h"
 #include "dc_bios_types.h"
@@ -53,7 +54,7 @@
 #include "link_enc_cfg.h"
 
 #include "dc_link.h"
-#include "dc_link_ddc.h"
+#include "link.h"
 #include "dm_helpers.h"
 #include "mem_input.h"
 
@@ -68,8 +69,6 @@
 
 #include "dmub/dmub_srv.h"
 
-#include "i2caux_interface.h"
-
 #include "dce/dmub_psr.h"
 
 #include "dce/dmub_hw_lock_mgr.h"
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 13e33f581e73..b5572f5202ca 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -34,7 +34,7 @@
 #include "core_status.h"
 #include "dc_link_dp.h"
 #include "dc_link_dpia.h"
-#include "dc_link_ddc.h"
+#include "link/link_ddc.h"
 #include "link_hwss.h"
 #include "link.h"
 #include "opp.h"
@@ -80,7 +80,7 @@ static void dc_link_destruct(struct dc_link *link)
 	}
 
 	if (link->ddc)
-		dal_ddc_service_destroy(&link->ddc);
+		link_destroy_ddc_service(&link->ddc);
 
 	if (link->panel_cntl)
 		link->panel_cntl->funcs->destroy(&link->panel_cntl);
@@ -277,7 +277,7 @@ bool dc_link_is_dp_sink_present(struct dc_link *link)
 		(connector_id == CONNECTOR_ID_EDP) ||
 		(connector_id == CONNECTOR_ID_USBC));
 
-	ddc = dal_ddc_service_get_ddc_pin(link->ddc);
+	ddc = get_ddc_pin(link->ddc);
 
 	if (!ddc) {
 		BREAK_TO_DEBUGGER();
@@ -422,11 +422,179 @@ static enum signal_type decide_signal_from_strap_and_dongle_type(enum display_do
 	return signal;
 }
 
+static bool i2c_read(
+	struct ddc_service *ddc,
+	uint32_t address,
+	uint8_t *buffer,
+	uint32_t len)
+{
+	uint8_t offs_data = 0;
+	struct i2c_payload payloads[2] = {
+		{
+		.write = true,
+		.address = address,
+		.length = 1,
+		.data = &offs_data },
+		{
+		.write = false,
+		.address = address,
+		.length = len,
+		.data = buffer } };
+
+	struct i2c_command command = {
+		.payloads = payloads,
+		.number_of_payloads = 2,
+		.engine = DDC_I2C_COMMAND_ENGINE,
+		.speed = ddc->ctx->dc->caps.i2c_speed_in_khz };
+
+	return dm_helpers_submit_i2c(
+			ddc->ctx,
+			ddc->link,
+			&command);
+}
+
+enum {
+	DP_SINK_CAP_SIZE =
+		DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV + 1
+};
+
+static void query_dp_dual_mode_adaptor(
+	struct ddc_service *ddc,
+	struct display_sink_capability *sink_cap)
+{
+	uint8_t i;
+	bool is_valid_hdmi_signature;
+	enum display_dongle_type *dongle = &sink_cap->dongle_type;
+	uint8_t type2_dongle_buf[DP_ADAPTOR_TYPE2_SIZE];
+	bool is_type2_dongle = false;
+	int retry_count = 2;
+	struct dp_hdmi_dongle_signature_data *dongle_signature;
+
+	/* Assume we have no valid DP passive dongle connected */
+	*dongle = DISPLAY_DONGLE_NONE;
+	sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK;
+
+	/* Read DP-HDMI dongle I2c (no response interpreted as DP-DVI dongle)*/
+	if (!i2c_read(
+		ddc,
+		DP_HDMI_DONGLE_ADDRESS,
+		type2_dongle_buf,
+		sizeof(type2_dongle_buf))) {
+		/* Passive HDMI dongles can sometimes fail here without retrying*/
+		while (retry_count > 0) {
+			if (i2c_read(ddc,
+				DP_HDMI_DONGLE_ADDRESS,
+				type2_dongle_buf,
+				sizeof(type2_dongle_buf)))
+				break;
+			retry_count--;
+		}
+		if (retry_count == 0) {
+			*dongle = DISPLAY_DONGLE_DP_DVI_DONGLE;
+			sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_DVI_MAX_TMDS_CLK;
+
+			CONN_DATA_DETECT(ddc->link, type2_dongle_buf, sizeof(type2_dongle_buf),
+					"DP-DVI passive dongle %dMhz: ",
+					DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000);
+			return;
+		}
+	}
+
+	/* Check if Type 2 dongle.*/
+	if (type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_ID] == DP_ADAPTOR_TYPE2_ID)
+		is_type2_dongle = true;
+
+	dongle_signature =
+		(struct dp_hdmi_dongle_signature_data *)type2_dongle_buf;
+
+	is_valid_hdmi_signature = true;
+
+	/* Check EOT */
+	if (dongle_signature->eot != DP_HDMI_DONGLE_SIGNATURE_EOT) {
+		is_valid_hdmi_signature = false;
+	}
+
+	/* Check signature */
+	for (i = 0; i < sizeof(dongle_signature->id); ++i) {
+		/* If its not the right signature,
+		 * skip mismatch in subversion byte.*/
+		if (dongle_signature->id[i] !=
+			dp_hdmi_dongle_signature_str[i] && i != 3) {
+
+			if (is_type2_dongle) {
+				is_valid_hdmi_signature = false;
+				break;
+			}
+
+		}
+	}
+
+	if (is_type2_dongle) {
+		uint32_t max_tmds_clk =
+			type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK];
+
+		max_tmds_clk = max_tmds_clk * 2 + max_tmds_clk / 2;
+
+		if (0 == max_tmds_clk ||
+				max_tmds_clk < DP_ADAPTOR_TYPE2_MIN_TMDS_CLK ||
+				max_tmds_clk > DP_ADAPTOR_TYPE2_MAX_TMDS_CLK) {
+			*dongle = DISPLAY_DONGLE_DP_DVI_DONGLE;
+
+			CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
+					sizeof(type2_dongle_buf),
+					"DP-DVI passive dongle %dMhz: ",
+					DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000);
+		} else {
+			if (is_valid_hdmi_signature == true) {
+				*dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE;
+
+				CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
+						sizeof(type2_dongle_buf),
+						"Type 2 DP-HDMI passive dongle %dMhz: ",
+						max_tmds_clk);
+			} else {
+				*dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE;
+
+				CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
+						sizeof(type2_dongle_buf),
+						"Type 2 DP-HDMI passive dongle (no signature) %dMhz: ",
+						max_tmds_clk);
+
+			}
+
+			/* Multiply by 1000 to convert to kHz. */
+			sink_cap->max_hdmi_pixel_clock =
+				max_tmds_clk * 1000;
+		}
+		sink_cap->is_dongle_type_one = false;
+
+	} else {
+		if (is_valid_hdmi_signature == true) {
+			*dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE;
+
+			CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
+					sizeof(type2_dongle_buf),
+					"Type 1 DP-HDMI passive dongle %dMhz: ",
+					sink_cap->max_hdmi_pixel_clock / 1000);
+		} else {
+			*dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE;
+
+			CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
+					sizeof(type2_dongle_buf),
+					"Type 1 DP-HDMI passive dongle (no signature) %dMhz: ",
+					sink_cap->max_hdmi_pixel_clock / 1000);
+		}
+		sink_cap->is_dongle_type_one = true;
+	}
+
+	return;
+}
+
 static enum signal_type dp_passive_dongle_detection(struct ddc_service *ddc,
 						    struct display_sink_capability *sink_cap,
 						    struct audio_support *audio_support)
 {
-	dal_ddc_service_i2c_query_dp_dual_mode_adaptor(ddc, sink_cap);
+	query_dp_dual_mode_adaptor(ddc, sink_cap);
 
 	return decide_signal_from_strap_and_dongle_type(sink_cap->dongle_type,
 							audio_support);
@@ -1046,11 +1214,11 @@ static bool detect_link_and_local_sink(struct dc_link *link,
 		else
 			link->dpcd_sink_count = 1;
 
-		dal_ddc_service_set_transaction_type(link->ddc,
+		set_ddc_transaction_type(link->ddc,
 						     sink_caps.transaction_type);
 
 		link->aux_mode =
-			dal_ddc_service_is_in_aux_transaction_mode(link->ddc);
+			link_is_in_aux_transaction_mode(link->ddc);
 
 		sink_init_data.link = link;
 		sink_init_data.sink_signal = sink_caps.signal;
@@ -1265,7 +1433,7 @@ static enum channel_id get_ddc_line(struct dc_link *link)
 
 	channel = CHANNEL_ID_UNKNOWN;
 
-	ddc = dal_ddc_service_get_ddc_pin(link->ddc);
+	ddc = get_ddc_pin(link->ddc);
 
 	if (ddc) {
 		switch (dal_ddc_get_line(ddc)) {
@@ -1502,7 +1670,7 @@ static bool dc_link_construct_legacy(struct dc_link *link,
 	ddc_service_init_data.ctx = link->ctx;
 	ddc_service_init_data.id = link->link_id;
 	ddc_service_init_data.link = link;
-	link->ddc = dal_ddc_service_create(&ddc_service_init_data);
+	link->ddc = link_create_ddc_service(&ddc_service_init_data);
 
 	if (!link->ddc) {
 		DC_ERROR("Failed to create ddc_service!\n");
@@ -1515,7 +1683,7 @@ static bool dc_link_construct_legacy(struct dc_link *link,
 	}
 
 	link->ddc_hw_inst =
-		dal_ddc_get_line(dal_ddc_service_get_ddc_pin(link->ddc));
+		dal_ddc_get_line(get_ddc_pin(link->ddc));
 
 
 	if (link->dc->res_pool->funcs->panel_cntl_create &&
@@ -1652,7 +1820,7 @@ static bool dc_link_construct_legacy(struct dc_link *link,
 	if (link->panel_cntl != NULL)
 		link->panel_cntl->funcs->destroy(&link->panel_cntl);
 panel_cntl_create_fail:
-	dal_ddc_service_destroy(&link->ddc);
+	link_destroy_ddc_service(&link->ddc);
 ddc_create_fail:
 create_fail:
 
@@ -1710,7 +1878,7 @@ static bool dc_link_construct_dpia(struct dc_link *link,
 	/* Set indicator for dpia link so that ddc won't be created */
 	ddc_service_init_data.is_dpia_link = true;
 
-	link->ddc = dal_ddc_service_create(&ddc_service_init_data);
+	link->ddc = link_create_ddc_service(&ddc_service_init_data);
 	if (!link->ddc) {
 		DC_ERROR("Failed to create ddc_service!\n");
 		goto ddc_create_fail;
@@ -2178,7 +2346,7 @@ static void write_i2c_retimer_setting(
 					value = settings->reg_settings[i].i2c_reg_val;
 				else {
 					i2c_success =
-						dal_ddc_service_query_ddc_data(
+						link_query_ddc_data(
 						pipe_ctx->stream->link->ddc,
 						slave_address, &offset, 1, &value, 1);
 					if (!i2c_success)
@@ -2228,7 +2396,7 @@ static void write_i2c_retimer_setting(
 						value = settings->reg_settings_6g[i].i2c_reg_val;
 					else {
 						i2c_success =
-								dal_ddc_service_query_ddc_data(
+								link_query_ddc_data(
 								pipe_ctx->stream->link->ddc,
 								slave_address, &offset, 1, &value, 1);
 						if (!i2c_success)
@@ -2526,7 +2694,7 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
 	}
 
 	if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
-		dal_ddc_service_write_scdc_data(
+		write_scdc_data(
 			stream->link->ddc,
 			stream->phy_pix_clk,
 			stream->timing.flags.LTE_340MCSC_SCRAMBLE);
@@ -2547,7 +2715,7 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
 			stream->phy_pix_clk);
 
 	if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
-		dal_ddc_service_read_scdc_data(link->ddc);
+		read_scdc_data(link->ddc);
 }
 
 static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
@@ -4312,7 +4480,7 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 		unsigned short masked_chip_caps = link->chip_caps &
 				EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK;
 		//Need to inform that sink is going to use legacy HDMI mode.
-		dal_ddc_service_write_scdc_data(
+		write_scdc_data(
 			link->ddc,
 			165000,//vbios only handles 165Mhz.
 			false);
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 51945593f74b..815652da4126 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -32,7 +32,7 @@
 
 #include "inc/core_types.h"
 #include "link_hwss.h"
-#include "dc_link_ddc.h"
+#include "link/link_ddc.h"
 #include "core_status.h"
 #include "dpcd_defs.h"
 #include "dc_dmub_srv.h"
@@ -4866,7 +4866,7 @@ static void get_active_converter_info(
 	/* decode converter info*/
 	if (!ds_port.fields.PORT_PRESENT) {
 		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
-		ddc_service_set_dongle_type(link->ddc,
+		set_dongle_type(link->ddc,
 				link->dpcd_caps.dongle_type);
 		link->dpcd_caps.is_branch_dev = false;
 		return;
@@ -4974,7 +4974,7 @@ static void get_active_converter_info(
 		}
 	}
 
-	ddc_service_set_dongle_type(link->ddc, link->dpcd_caps.dongle_type);
+	set_dongle_type(link->ddc, link->dpcd_caps.dongle_type);
 
 	{
 		struct dp_sink_hw_fw_revision dp_hw_fw_revision;
@@ -5352,7 +5352,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 	 * default to LTTPR timeout (3.2ms) first as a W/A for DP link layer
 	 * CTS 4.2.1.1 regression introduced by CTS specs requirement update.
 	 */
-	dc_link_aux_try_to_configure_timeout(link->ddc,
+	try_to_configure_aux_timeout(link->ddc,
 			LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD);
 
 	status = dp_retrieve_lttpr_cap(link);
@@ -5393,7 +5393,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 	}
 
 	if (!dp_is_lttpr_present(link))
-		dc_link_aux_try_to_configure_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD);
+		try_to_configure_aux_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD);
 
 	{
 		union training_aux_rd_interval aux_rd_interval;
diff --git a/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h b/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h
index 7769bd099a5a..7b036a772b0c 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h
@@ -77,6 +77,32 @@ struct aux_reply_transaction_data {
 	uint8_t *data;
 };
 
+struct aux_payload {
+	/* set following flag to read/write I2C data,
+	 * reset it to read/write DPCD data */
+	bool i2c_over_aux;
+	/* set following flag to write data,
+	 * reset it to read data */
+	bool write;
+	bool mot;
+	bool write_status_update;
+
+	uint32_t address;
+	uint32_t length;
+	uint8_t *data;
+	/*
+	 * used to return the reply type of the transaction
+	 * ignored if NULL
+	 */
+	uint8_t *reply;
+	/* expressed in milliseconds
+	 * zero means "use default value"
+	 */
+	uint32_t defer_delay;
+
+};
+#define DEFAULT_AUX_MAX_DATA_SIZE 16
+
 struct i2c_payload {
 	bool write;
 	uint8_t address;
@@ -90,6 +116,8 @@ enum i2c_command_engine {
 	I2C_COMMAND_ENGINE_HW
 };
 
+#define DDC_I2C_COMMAND_ENGINE I2C_COMMAND_ENGINE_SW
+
 struct i2c_command {
 	struct i2c_payload *payloads;
 	uint8_t number_of_payloads;
diff --git a/drivers/gpu/drm/amd/display/dc/dc_hdmi_types.h b/drivers/gpu/drm/amd/display/dc/dc_hdmi_types.h
new file mode 100644
index 000000000000..faf0d175bf19
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dc_hdmi_types.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef DC_HDMI_TYPES_H
+#define DC_HDMI_TYPES_H
+
+#include "os_types.h"
+
+/* Address range from 0x00 to 0x1F.*/
+#define DP_ADAPTOR_TYPE2_SIZE 0x20
+#define DP_ADAPTOR_TYPE2_REG_ID 0x10
+#define DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK 0x1D
+/* Identifies adaptor as Dual-mode adaptor */
+#define DP_ADAPTOR_TYPE2_ID 0xA0
+/* MHz*/
+#define DP_ADAPTOR_TYPE2_MAX_TMDS_CLK 600
+/* MHz*/
+#define DP_ADAPTOR_TYPE2_MIN_TMDS_CLK 25
+/* kHZ*/
+#define DP_ADAPTOR_DVI_MAX_TMDS_CLK 165000
+/* kHZ*/
+#define DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK 165000
+
+struct dp_hdmi_dongle_signature_data {
+	int8_t id[15];/* "DP-HDMI ADAPTOR"*/
+	uint8_t eot;/* end of transmition '\x4' */
+};
+
+/* DP-HDMI dongle slave address for retrieving dongle signature*/
+#define DP_HDMI_DONGLE_ADDRESS 0x40
+static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR";
+#define DP_HDMI_DONGLE_SIGNATURE_EOT 0x04
+
+
+/* SCDC Address defines (HDMI 2.0)*/
+#define HDMI_SCDC_WRITE_UPDATE_0_ARRAY 3
+#define HDMI_SCDC_ADDRESS  0x54
+#define HDMI_SCDC_SINK_VERSION 0x01
+#define HDMI_SCDC_SOURCE_VERSION 0x02
+#define HDMI_SCDC_UPDATE_0 0x10
+#define HDMI_SCDC_TMDS_CONFIG 0x20
+#define HDMI_SCDC_SCRAMBLER_STATUS 0x21
+#define HDMI_SCDC_CONFIG_0 0x30
+#define HDMI_SCDC_CONFIG_1 0x31
+#define HDMI_SCDC_SOURCE_TEST_REQ 0x35
+#define HDMI_SCDC_STATUS_FLAGS 0x40
+#define HDMI_SCDC_ERR_DETECT 0x50
+#define HDMI_SCDC_TEST_CONFIG 0xC0
+
+union hdmi_scdc_update_read_data {
+	uint8_t byte[2];
+	struct {
+		uint8_t STATUS_UPDATE:1;
+		uint8_t CED_UPDATE:1;
+		uint8_t RR_TEST:1;
+		uint8_t RESERVED:5;
+		uint8_t RESERVED2:8;
+	} fields;
+};
+
+union hdmi_scdc_status_flags_data {
+	uint8_t byte;
+	struct {
+		uint8_t CLOCK_DETECTED:1;
+		uint8_t CH0_LOCKED:1;
+		uint8_t CH1_LOCKED:1;
+		uint8_t CH2_LOCKED:1;
+		uint8_t RESERVED:4;
+	} fields;
+};
+
+union hdmi_scdc_ced_data {
+	uint8_t byte[11];
+	struct {
+		uint8_t CH0_8LOW:8;
+		uint8_t CH0_7HIGH:7;
+		uint8_t CH0_VALID:1;
+		uint8_t CH1_8LOW:8;
+		uint8_t CH1_7HIGH:7;
+		uint8_t CH1_VALID:1;
+		uint8_t CH2_8LOW:8;
+		uint8_t CH2_7HIGH:7;
+		uint8_t CH2_VALID:1;
+		uint8_t CHECKSUM:8;
+		uint8_t RESERVED:8;
+		uint8_t RESERVED2:8;
+		uint8_t RESERVED3:8;
+		uint8_t RESERVED4:4;
+	} fields;
+};
+
+#endif /* DC_HDMI_TYPES_H */
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index fbd6f11a63db..d0d2d964d601 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -31,6 +31,7 @@
 #include "grph_object_defs.h"
 
 struct link_resource;
+enum aux_return_code_type;
 
 enum dc_link_fec_state {
 	dc_link_fec_not_ready,
@@ -591,4 +592,13 @@ unsigned int dc_dp_trace_get_link_loss_count(struct dc_link *link);
 
 /* Destruct the mst topology of the link and reset the allocated payload table */
 bool reset_cur_dp_mst_topology(struct dc_link *link);
+
+/* Attempt to transfer the given aux payload. This function does not perform
+ * retries or handle error states. The reply is returned in the payload->reply
+ * and the result through operation_result. Returns the number of bytes
+ * transferred,or -1 on a failure.
+ */
+int dc_link_aux_transfer_raw(struct ddc_service *ddc,
+		struct aux_payload *payload,
+		enum aux_return_code_type *operation_result);
 #endif /* DC_LINK_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index dc78e2404b48..c73a655bd687 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -33,6 +33,7 @@
 #include "fixed31_32.h"
 #include "irq_types.h"
 #include "dc_dp_types.h"
+#include "dc_hdmi_types.h"
 #include "dc_hw_types.h"
 #include "dal_types.h"
 #include "grph_object_defs.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h
index e69f1899fbf0..c850ed49281f 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h
@@ -26,7 +26,7 @@
 #ifndef __DAL_AUX_ENGINE_DCE110_H__
 #define __DAL_AUX_ENGINE_DCE110_H__
 
-#include "i2caux_interface.h"
+#include "gpio_service_interface.h"
 #include "inc/hw/aux_engine.h"
 
 enum aux_return_code_type;
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
index 09260c23c3bd..fa314493ffc5 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -29,7 +29,6 @@
 #include "link_encoder.h"
 #include "dce_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
index fbccb7263ad2..c4287147b853 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
@@ -29,7 +29,6 @@
 #include "link_encoder.h"
 #include "dcn10_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
index 2f9bfaeaba8d..51a57dae1811 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c
@@ -29,7 +29,6 @@
 #include "link_encoder.h"
 #include "dcn20_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 71c7237413ef..531f405d2554 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -62,7 +62,6 @@
 #include "dml/display_mode_vba.h"
 #include "dcn20_dccg.h"
 #include "dcn20_vmid.h"
-#include "dc_link_ddc.h"
 #include "dce/dce_panel_cntl.h"
 
 #include "navi10_ip_offset.h"
@@ -90,6 +89,7 @@
 
 #include "amdgpu_socbb.h"
 
+#include "link.h"
 #define DC_LOGGER_INIT(logger)
 
 #ifndef mmDP0_DP_DPHY_INTERNAL_CTRL
@@ -1214,7 +1214,7 @@ static void dcn20_resource_destruct(struct dcn20_resource_pool *pool)
 		dcn20_pp_smu_destroy(&pool->base.pp_smu);
 
 	if (pool->base.oem_device != NULL)
-		dal_ddc_service_destroy(&pool->base.oem_device);
+		link_destroy_ddc_service(&pool->base.oem_device);
 }
 
 struct hubp *dcn20_hubp_create(
@@ -2769,7 +2769,7 @@ static bool dcn20_resource_construct(
 		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
 		ddc_init_data.id.enum_id = 0;
 		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
-		pool->base.oem_device = dal_ddc_service_create(&ddc_init_data);
+		pool->base.oem_device = link_create_ddc_service(&ddc_init_data);
 	} else {
 		pool->base.oem_device = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_link_encoder.c
index 7f9ec59ef443..8d31fa131cd6 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_link_encoder.c
@@ -29,7 +29,6 @@
 #include "link_encoder.h"
 #include "dcn201_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_link_encoder.c
index 0a1ba6e7081c..eb9abb9f9698 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_link_encoder.c
@@ -31,7 +31,6 @@
 #include "dcn21_link_encoder.h"
 #include "stream_encoder.h"
 
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_link_encoder.c
index 6f3c2fb60790..1fb8fd7afc95 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_link_encoder.c
@@ -29,7 +29,6 @@
 #include "link_encoder.h"
 #include "dcn30_dio_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 /* #include "dcn3ag/dcn3ag_phy_fw.h" */
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
index c18c52a60100..feb4bb491525 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
@@ -60,7 +60,7 @@
 #include "dml/display_mode_vba.h"
 #include "dcn30/dcn30_dccg.h"
 #include "dcn10/dcn10_resource.h"
-#include "dc_link_ddc.h"
+#include "link.h"
 #include "dce/dce_panel_cntl.h"
 
 #include "dcn30/dcn30_dwb.h"
@@ -1208,7 +1208,7 @@ static void dcn30_resource_destruct(struct dcn30_resource_pool *pool)
 		dcn_dccg_destroy(&pool->base.dccg);
 
 	if (pool->base.oem_device != NULL)
-		dal_ddc_service_destroy(&pool->base.oem_device);
+		link_destroy_ddc_service(&pool->base.oem_device);
 }
 
 static struct hubp *dcn30_hubp_create(
@@ -2590,7 +2590,7 @@ static bool dcn30_resource_construct(
 		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
 		ddc_init_data.id.enum_id = 0;
 		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
-		pool->base.oem_device = dal_ddc_service_create(&ddc_init_data);
+		pool->base.oem_device = link_create_ddc_service(&ddc_init_data);
 	} else {
 		pool->base.oem_device = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_dio_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_dio_link_encoder.c
index c9fbaed23965..1b39a6e8a1ac 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_dio_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_dio_link_encoder.c
@@ -29,7 +29,6 @@
 #include "link_encoder.h"
 #include "dcn301_dio_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 #include "gpio_service_interface.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
index 47cffd0e6830..03ddf4f5f065 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
@@ -47,6 +47,7 @@
 
 #include "dcn10/dcn10_resource.h"
 
+#include "link.h"
 #include "dce/dce_abm.h"
 #include "dce/dce_audio.h"
 #include "dce/dce_aux.h"
@@ -1125,6 +1126,9 @@ static void dcn302_resource_destruct(struct resource_pool *pool)
 
 	if (pool->dccg != NULL)
 		dcn_dccg_destroy(&pool->dccg);
+
+	if (pool->oem_device != NULL)
+		link_destroy_ddc_service(&pool->oem_device);
 }
 
 static void dcn302_destroy_resource_pool(struct resource_pool **pool)
@@ -1216,6 +1220,7 @@ static bool dcn302_resource_construct(
 	int i;
 	struct dc_context *ctx = dc->ctx;
 	struct irq_service_init_data init_data;
+	struct ddc_service_init_data ddc_init_data = {0};
 
 	ctx->dc_bios->regs = &bios_regs;
 
@@ -1497,6 +1502,17 @@ static bool dcn302_resource_construct(
 
 	dc->cap_funcs = cap_funcs;
 
+	if (dc->ctx->dc_bios->fw_info.oem_i2c_present) {
+		ddc_init_data.ctx = dc->ctx;
+		ddc_init_data.link = NULL;
+		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
+		ddc_init_data.id.enum_id = 0;
+		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
+		pool->oem_device = link_create_ddc_service(&ddc_init_data);
+	} else {
+		pool->oem_device = NULL;
+	}
+
 	return true;
 
 create_fail:
diff --git a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
index c14d35894b2e..31e212064168 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
@@ -29,7 +29,7 @@
 
 #include "dcn10/dcn10_resource.h"
 
-#include "dc_link_ddc.h"
+#include "link.h"
 
 #include "dce/dce_abm.h"
 #include "dce/dce_audio.h"
@@ -1054,7 +1054,7 @@ static void dcn303_resource_destruct(struct resource_pool *pool)
 		dcn_dccg_destroy(&pool->dccg);
 
 	if (pool->oem_device != NULL)
-		dal_ddc_service_destroy(&pool->oem_device);
+		link_destroy_ddc_service(&pool->oem_device);
 }
 
 static void dcn303_destroy_resource_pool(struct resource_pool **pool)
@@ -1421,7 +1421,7 @@ static bool dcn303_resource_construct(
 		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
 		ddc_init_data.id.enum_id = 0;
 		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
-		pool->oem_device = dal_ddc_service_create(&ddc_init_data);
+		pool->oem_device = link_create_ddc_service(&ddc_init_data);
 	} else {
 		pool->oem_device = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_link_encoder.c
index ab70ebd8f223..275e78c06dee 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_link_encoder.c
@@ -30,7 +30,6 @@
 #include "link_encoder.h"
 #include "dcn31_dio_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c
index 076969d928af..501388014855 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_link_encoder.c
@@ -31,7 +31,6 @@
 #include "dcn31/dcn31_dio_link_encoder.h"
 #include "dcn32_dio_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 #include "link_enc_cfg.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
index dfecdf3e25e9..47dc96acdacb 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
@@ -69,7 +69,7 @@
 #include "dml/display_mode_vba.h"
 #include "dcn32/dcn32_dccg.h"
 #include "dcn10/dcn10_resource.h"
-#include "dc_link_ddc.h"
+#include "link.h"
 #include "dcn31/dcn31_panel_cntl.h"
 
 #include "dcn30/dcn30_dwb.h"
@@ -1508,7 +1508,7 @@ static void dcn32_resource_destruct(struct dcn32_resource_pool *pool)
 		dcn_dccg_destroy(&pool->base.dccg);
 
 	if (pool->base.oem_device != NULL)
-		dal_ddc_service_destroy(&pool->base.oem_device);
+		link_destroy_ddc_service(&pool->base.oem_device);
 }
 
 
@@ -2450,7 +2450,7 @@ static bool dcn32_resource_construct(
 		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
 		ddc_init_data.id.enum_id = 0;
 		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
-		pool->base.oem_device = dal_ddc_service_create(&ddc_init_data);
+		pool->base.oem_device = link_create_ddc_service(&ddc_init_data);
 	} else {
 		pool->base.oem_device = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_dio_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_dio_link_encoder.c
index fa9b6603cfd3..13be5f06d987 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_dio_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_dio_link_encoder.c
@@ -31,7 +31,6 @@
 #include "dcn321_dio_link_encoder.h"
 #include "dcn31/dcn31_dio_link_encoder.h"
 #include "stream_encoder.h"
-#include "i2caux_interface.h"
 #include "dc_bios_types.h"
 
 #include "gpio_service_interface.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c
index 62e400e90b56..260d71ca0205 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c
@@ -73,7 +73,7 @@
 #include "dml/display_mode_vba.h"
 #include "dcn32/dcn32_dccg.h"
 #include "dcn10/dcn10_resource.h"
-#include "dc_link_ddc.h"
+#include "link.h"
 #include "dcn31/dcn31_panel_cntl.h"
 
 #include "dcn30/dcn30_dwb.h"
@@ -1493,7 +1493,7 @@ static void dcn321_resource_destruct(struct dcn321_resource_pool *pool)
 		dcn_dccg_destroy(&pool->base.dccg);
 
 	if (pool->base.oem_device != NULL)
-		dal_ddc_service_destroy(&pool->base.oem_device);
+		link_destroy_ddc_service(&pool->base.oem_device);
 }
 
 
@@ -1991,7 +1991,7 @@ static bool dcn321_resource_construct(
 		ddc_init_data.id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
 		ddc_init_data.id.enum_id = 0;
 		ddc_init_data.id.type = OBJECT_TYPE_GENERIC;
-		pool->base.oem_device = dal_ddc_service_create(&ddc_init_data);
+		pool->base.oem_device = link_create_ddc_service(&ddc_init_data);
 	} else {
 		pool->base.oem_device = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
index 4233955e3c47..6c4b47f90d49 100644
--- a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
+++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
@@ -28,10 +28,9 @@
 #include "dm_services.h"
 #include "dm_helpers.h"
 #include "include/hdcp_types.h"
-#include "include/i2caux_interface.h"
 #include "include/signal_types.h"
 #include "core_types.h"
-#include "dc_link_ddc.h"
+#include "link.h"
 #include "link_hwss.h"
 #include "inc/link_dpcd.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
deleted file mode 100644
index 95fb61d62778..000000000000
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright 2012-15 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: AMD
- *
- */
-
-#ifndef __DAL_DDC_SERVICE_H__
-#define __DAL_DDC_SERVICE_H__
-
-#include "include/ddc_service_types.h"
-#include "include/i2caux_interface.h"
-
-#define EDID_SEGMENT_SIZE 256
-
-/* Address range from 0x00 to 0x1F.*/
-#define DP_ADAPTOR_TYPE2_SIZE 0x20
-#define DP_ADAPTOR_TYPE2_REG_ID 0x10
-#define DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK 0x1D
-/* Identifies adaptor as Dual-mode adaptor */
-#define DP_ADAPTOR_TYPE2_ID 0xA0
-/* MHz*/
-#define DP_ADAPTOR_TYPE2_MAX_TMDS_CLK 600
-/* MHz*/
-#define DP_ADAPTOR_TYPE2_MIN_TMDS_CLK 25
-/* kHZ*/
-#define DP_ADAPTOR_DVI_MAX_TMDS_CLK 165000
-/* kHZ*/
-#define DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK 165000
-
-#define DDC_I2C_COMMAND_ENGINE I2C_COMMAND_ENGINE_SW
-
-struct ddc_service;
-struct graphics_object_id;
-enum ddc_result;
-struct av_sync_data;
-struct dp_receiver_id_info;
-
-struct i2c_payloads;
-struct aux_payloads;
-enum aux_return_code_type;
-
-void dal_ddc_i2c_payloads_add(
-		struct i2c_payloads *payloads,
-		uint32_t address,
-		uint32_t len,
-		uint8_t *data,
-		bool write);
-
-struct ddc_service_init_data {
-	struct graphics_object_id id;
-	struct dc_context *ctx;
-	struct dc_link *link;
-	bool is_dpia_link;
-};
-
-struct ddc_service *dal_ddc_service_create(
-		struct ddc_service_init_data *ddc_init_data);
-
-void dal_ddc_service_destroy(struct ddc_service **ddc);
-
-enum ddc_service_type dal_ddc_service_get_type(struct ddc_service *ddc);
-
-void dal_ddc_service_set_transaction_type(
-		struct ddc_service *ddc,
-		enum ddc_transaction_type type);
-
-bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc);
-
-void dal_ddc_service_i2c_query_dp_dual_mode_adaptor(
-		struct ddc_service *ddc,
-		struct display_sink_capability *sink_cap);
-
-bool dal_ddc_service_query_ddc_data(
-		struct ddc_service *ddc,
-		uint32_t address,
-		uint8_t *write_buf,
-		uint32_t write_size,
-		uint8_t *read_buf,
-		uint32_t read_size);
-
-bool dal_ddc_submit_aux_command(struct ddc_service *ddc,
-		struct aux_payload *payload);
-
-int dc_link_aux_transfer_raw(struct ddc_service *ddc,
-		struct aux_payload *payload,
-		enum aux_return_code_type *operation_result);
-
-bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc,
-		struct aux_payload *payload);
-
-bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc,
-		uint32_t timeout);
-
-void dal_ddc_service_write_scdc_data(
-		struct ddc_service *ddc_service,
-		uint32_t pix_clk,
-		bool lte_340_scramble);
-
-void dal_ddc_service_read_scdc_data(
-		struct ddc_service *ddc_service);
-
-void ddc_service_set_dongle_type(struct ddc_service *ddc,
-		enum display_dongle_type dongle_type);
-
-void dal_ddc_service_set_ddc_pin(
-		struct ddc_service *ddc_service,
-		struct ddc *ddc);
-
-struct ddc *dal_ddc_service_get_ddc_pin(struct ddc_service *ddc_service);
-
-uint32_t get_defer_delay(struct ddc_service *ddc);
-
-#endif /* __DAL_DDC_SERVICE_H__ */
-
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h b/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h
index 2ae630bf2aee..7254182b7c72 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/aux_engine.h
@@ -27,7 +27,6 @@
 #define __DAL_AUX_ENGINE_H__
 
 #include "dc_ddc_types.h"
-#include "include/i2caux_interface.h"
 
 enum aux_return_code_type;
 
@@ -81,7 +80,12 @@ enum i2c_default_speed {
 	I2CAUX_DEFAULT_I2C_SW_SPEED = 50
 };
 
-union aux_config;
+union aux_config {
+	struct {
+		uint32_t ALLOW_AUX_WHEN_HPD_LOW:1;
+	} bits;
+	uint32_t raw;
+};
 
 struct aux_engine {
 	uint32_t inst;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link.h b/drivers/gpu/drm/amd/display/dc/inc/link.h
index 51ddf7a34d98..8774d3a39f05 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/link.h
@@ -44,4 +44,41 @@ struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
 		struct graphics_object_id link_id,
 		struct gpio_service *gpio_service);
 
+struct ddc_service_init_data {
+	struct graphics_object_id id;
+	struct dc_context *ctx;
+	struct dc_link *link;
+	bool is_dpia_link;
+};
+
+struct ddc_service *link_create_ddc_service(
+		struct ddc_service_init_data *ddc_init_data);
+
+void link_destroy_ddc_service(struct ddc_service **ddc);
+
+bool link_is_in_aux_transaction_mode(struct ddc_service *ddc);
+
+bool link_query_ddc_data(
+		struct ddc_service *ddc,
+		uint32_t address,
+		uint8_t *write_buf,
+		uint32_t write_size,
+		uint8_t *read_buf,
+		uint32_t read_size);
+
+
+/* Attempt to submit an aux payload, retrying on timeouts, defers, and busy
+ * states as outlined in the DP spec.  Returns true if the request was
+ * successful.
+ *
+ * NOTE: The function requires explicit mutex on DM side in order to prevent
+ * potential race condition. DC components should call the dpcd read/write
+ * function in dm_helpers in order to access dpcd safely
+ */
+bool link_aux_transfer_with_retries_no_mutex(struct ddc_service *ddc,
+		struct aux_payload *payload);
+
+uint32_t link_get_aux_defer_delay(struct ddc_service *ddc);
+
+
 #endif /* __DC_LINK_HPD_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index 835a2febf2db..d1b1bb3c5352 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -24,7 +24,7 @@
 # PHY, HPD, DDC and etc).
 
 LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
-link_hpd.o
+link_hpd.o link_ddc.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/link/link_ddc.c
similarity index 57%
rename from drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
rename to drivers/gpu/drm/amd/display/dc/link/link_ddc.c
index 651231387043..5269125bc2a4 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_ddc.c
@@ -23,20 +23,20 @@
  *
  */
 
-#include "dm_services.h"
-#include "dm_helpers.h"
-#include "gpio_service_interface.h"
-#include "include/ddc_service_types.h"
-#include "include/grph_object_id.h"
-#include "include/dpcd_defs.h"
-#include "include/logger_interface.h"
-#include "include/vector.h"
-#include "core_types.h"
-#include "dc_link_ddc.h"
+/* FILE POLICY AND INTENDED USAGE:
+ *
+ * This file implements generic display communication protocols such as i2c, aux
+ * and scdc. The file should not contain any specific applications of these
+ * protocols such as display capability query, detection, or handshaking such as
+ * link training.
+ */
+#include "link_ddc.h"
+#include "vector.h"
 #include "dce/dce_aux.h"
-#include "dmub/inc/dmub_cmd.h"
+#include "dal_asic_id.h"
 #include "link_dpcd.h"
-#include "include/dal_asic_id.h"
+#include "dm_helpers.h"
+#include "atomfirmware.h"
 
 #define DC_LOGGER_INIT(logger)
 
@@ -45,86 +45,6 @@ static const uint8_t DP_VGA_DONGLE_BRANCH_DEV_NAME[] = "DpVga";
 static const uint8_t DP_DVI_CONVERTER_ID_4[] = "m2DVIa";
 static const uint8_t DP_DVI_CONVERTER_ID_5[] = "3393N2";
 
-#define AUX_POWER_UP_WA_DELAY 500
-#define I2C_OVER_AUX_DEFER_WA_DELAY 70
-#define DPVGA_DONGLE_AUX_DEFER_WA_DELAY 40
-#define I2C_OVER_AUX_DEFER_WA_DELAY_1MS 1
-
-/* CV smart dongle slave address for retrieving supported HDTV modes*/
-#define CV_SMART_DONGLE_ADDRESS 0x20
-/* DVI-HDMI dongle slave address for retrieving dongle signature*/
-#define DVI_HDMI_DONGLE_ADDRESS 0x68
-struct dvi_hdmi_dongle_signature_data {
-	int8_t vendor[3];/* "AMD" */
-	uint8_t version[2];
-	uint8_t size;
-	int8_t id[11];/* "6140063500G"*/
-};
-/* DP-HDMI dongle slave address for retrieving dongle signature*/
-#define DP_HDMI_DONGLE_ADDRESS 0x40
-static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR";
-#define DP_HDMI_DONGLE_SIGNATURE_EOT 0x04
-
-struct dp_hdmi_dongle_signature_data {
-	int8_t id[15];/* "DP-HDMI ADAPTOR"*/
-	uint8_t eot;/* end of transmition '\x4' */
-};
-
-/* SCDC Address defines (HDMI 2.0)*/
-#define HDMI_SCDC_WRITE_UPDATE_0_ARRAY 3
-#define HDMI_SCDC_ADDRESS  0x54
-#define HDMI_SCDC_SINK_VERSION 0x01
-#define HDMI_SCDC_SOURCE_VERSION 0x02
-#define HDMI_SCDC_UPDATE_0 0x10
-#define HDMI_SCDC_TMDS_CONFIG 0x20
-#define HDMI_SCDC_SCRAMBLER_STATUS 0x21
-#define HDMI_SCDC_CONFIG_0 0x30
-#define HDMI_SCDC_STATUS_FLAGS 0x40
-#define HDMI_SCDC_ERR_DETECT 0x50
-#define HDMI_SCDC_TEST_CONFIG 0xC0
-
-union hdmi_scdc_update_read_data {
-	uint8_t byte[2];
-	struct {
-		uint8_t STATUS_UPDATE:1;
-		uint8_t CED_UPDATE:1;
-		uint8_t RR_TEST:1;
-		uint8_t RESERVED:5;
-		uint8_t RESERVED2:8;
-	} fields;
-};
-
-union hdmi_scdc_status_flags_data {
-	uint8_t byte;
-	struct {
-		uint8_t CLOCK_DETECTED:1;
-		uint8_t CH0_LOCKED:1;
-		uint8_t CH1_LOCKED:1;
-		uint8_t CH2_LOCKED:1;
-		uint8_t RESERVED:4;
-	} fields;
-};
-
-union hdmi_scdc_ced_data {
-	uint8_t byte[7];
-	struct {
-		uint8_t CH0_8LOW:8;
-		uint8_t CH0_7HIGH:7;
-		uint8_t CH0_VALID:1;
-		uint8_t CH1_8LOW:8;
-		uint8_t CH1_7HIGH:7;
-		uint8_t CH1_VALID:1;
-		uint8_t CH2_8LOW:8;
-		uint8_t CH2_7HIGH:7;
-		uint8_t CH2_VALID:1;
-		uint8_t CHECKSUM:8;
-		uint8_t RESERVED:8;
-		uint8_t RESERVED2:8;
-		uint8_t RESERVED3:8;
-		uint8_t RESERVED4:4;
-	} fields;
-};
-
 struct i2c_payloads {
 	struct vector payloads;
 };
@@ -157,7 +77,7 @@ static uint32_t dal_ddc_i2c_payloads_get_count(struct i2c_payloads *p)
 
 #define DDC_MIN(a, b) (((a) < (b)) ? (a) : (b))
 
-void dal_ddc_i2c_payloads_add(
+static void i2c_payloads_add(
 	struct i2c_payloads *payloads,
 	uint32_t address,
 	uint32_t len,
@@ -225,7 +145,7 @@ static void ddc_service_construct(
 	ddc_service->wa.raw = 0;
 }
 
-struct ddc_service *dal_ddc_service_create(
+struct ddc_service *link_create_ddc_service(
 	struct ddc_service_init_data *init_data)
 {
 	struct ddc_service *ddc_service;
@@ -245,7 +165,7 @@ static void ddc_service_destruct(struct ddc_service *ddc)
 		dal_gpio_destroy_ddc(&ddc->ddc_pin);
 }
 
-void dal_ddc_service_destroy(struct ddc_service **ddc)
+void link_destroy_ddc_service(struct ddc_service **ddc)
 {
 	if (!ddc || !*ddc) {
 		BREAK_TO_DEBUGGER();
@@ -256,19 +176,14 @@ void dal_ddc_service_destroy(struct ddc_service **ddc)
 	*ddc = NULL;
 }
 
-enum ddc_service_type dal_ddc_service_get_type(struct ddc_service *ddc)
-{
-	return DDC_SERVICE_TYPE_CONNECTOR;
-}
-
-void dal_ddc_service_set_transaction_type(
+void set_ddc_transaction_type(
 	struct ddc_service *ddc,
 	enum ddc_transaction_type type)
 {
 	ddc->transaction_type = type;
 }
 
-bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc)
+bool link_is_in_aux_transaction_mode(struct ddc_service *ddc)
 {
 	switch (ddc->transaction_type) {
 	case DDC_TRANSACTION_TYPE_I2C_OVER_AUX:
@@ -281,7 +196,7 @@ bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc)
 	return false;
 }
 
-void ddc_service_set_dongle_type(struct ddc_service *ddc,
+void set_dongle_type(struct ddc_service *ddc,
 		enum display_dongle_type dongle_type)
 {
 	ddc->dongle_type = dongle_type;
@@ -323,7 +238,7 @@ static uint32_t defer_delay_converter_wa(
 
 #define DP_TRANSLATOR_DELAY 5
 
-uint32_t get_defer_delay(struct ddc_service *ddc)
+uint32_t link_get_aux_defer_delay(struct ddc_service *ddc)
 {
 	uint32_t defer_delay = 0;
 
@@ -351,175 +266,45 @@ uint32_t get_defer_delay(struct ddc_service *ddc)
 	return defer_delay;
 }
 
-static bool i2c_read(
-	struct ddc_service *ddc,
-	uint32_t address,
-	uint8_t *buffer,
-	uint32_t len)
-{
-	uint8_t offs_data = 0;
-	struct i2c_payload payloads[2] = {
-		{
-		.write = true,
-		.address = address,
-		.length = 1,
-		.data = &offs_data },
-		{
-		.write = false,
-		.address = address,
-		.length = len,
-		.data = buffer } };
-
-	struct i2c_command command = {
-		.payloads = payloads,
-		.number_of_payloads = 2,
-		.engine = DDC_I2C_COMMAND_ENGINE,
-		.speed = ddc->ctx->dc->caps.i2c_speed_in_khz };
-
-	return dm_helpers_submit_i2c(
-			ddc->ctx,
-			ddc->link,
-			&command);
-}
-
-void dal_ddc_service_i2c_query_dp_dual_mode_adaptor(
-	struct ddc_service *ddc,
-	struct display_sink_capability *sink_cap)
+static bool submit_aux_command(struct ddc_service *ddc,
+		struct aux_payload *payload)
 {
-	uint8_t i;
-	bool is_valid_hdmi_signature;
-	enum display_dongle_type *dongle = &sink_cap->dongle_type;
-	uint8_t type2_dongle_buf[DP_ADAPTOR_TYPE2_SIZE];
-	bool is_type2_dongle = false;
-	int retry_count = 2;
-	struct dp_hdmi_dongle_signature_data *dongle_signature;
-
-	/* Assume we have no valid DP passive dongle connected */
-	*dongle = DISPLAY_DONGLE_NONE;
-	sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK;
-
-	/* Read DP-HDMI dongle I2c (no response interpreted as DP-DVI dongle)*/
-	if (!i2c_read(
-		ddc,
-		DP_HDMI_DONGLE_ADDRESS,
-		type2_dongle_buf,
-		sizeof(type2_dongle_buf))) {
-		/* Passive HDMI dongles can sometimes fail here without retrying*/
-		while (retry_count > 0) {
-			if (i2c_read(ddc,
-				DP_HDMI_DONGLE_ADDRESS,
-				type2_dongle_buf,
-				sizeof(type2_dongle_buf)))
-				break;
-			retry_count--;
-		}
-		if (retry_count == 0) {
-			*dongle = DISPLAY_DONGLE_DP_DVI_DONGLE;
-			sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_DVI_MAX_TMDS_CLK;
-
-			CONN_DATA_DETECT(ddc->link, type2_dongle_buf, sizeof(type2_dongle_buf),
-					"DP-DVI passive dongle %dMhz: ",
-					DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000);
-			return;
-		}
-	}
-
-	/* Check if Type 2 dongle.*/
-	if (type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_ID] == DP_ADAPTOR_TYPE2_ID)
-		is_type2_dongle = true;
-
-	dongle_signature =
-		(struct dp_hdmi_dongle_signature_data *)type2_dongle_buf;
+	uint32_t retrieved = 0;
+	bool ret = false;
 
-	is_valid_hdmi_signature = true;
+	if (!ddc)
+		return false;
 
-	/* Check EOT */
-	if (dongle_signature->eot != DP_HDMI_DONGLE_SIGNATURE_EOT) {
-		is_valid_hdmi_signature = false;
-	}
+	if (!payload)
+		return false;
 
-	/* Check signature */
-	for (i = 0; i < sizeof(dongle_signature->id); ++i) {
-		/* If its not the right signature,
-		 * skip mismatch in subversion byte.*/
-		if (dongle_signature->id[i] !=
-			dp_hdmi_dongle_signature_str[i] && i != 3) {
+	do {
+		struct aux_payload current_payload;
+		bool is_end_of_payload = (retrieved + DEFAULT_AUX_MAX_DATA_SIZE) >=
+				payload->length;
+		uint32_t payload_length = is_end_of_payload ?
+				payload->length - retrieved : DEFAULT_AUX_MAX_DATA_SIZE;
 
-			if (is_type2_dongle) {
-				is_valid_hdmi_signature = false;
-				break;
-			}
+		current_payload.address = payload->address;
+		current_payload.data = &payload->data[retrieved];
+		current_payload.defer_delay = payload->defer_delay;
+		current_payload.i2c_over_aux = payload->i2c_over_aux;
+		current_payload.length = payload_length;
+		/* set mot (middle of transaction) to false if it is the last payload */
+		current_payload.mot = is_end_of_payload ? payload->mot:true;
+		current_payload.write_status_update = false;
+		current_payload.reply = payload->reply;
+		current_payload.write = payload->write;
 
-		}
-	}
+		ret = link_aux_transfer_with_retries_no_mutex(ddc, &current_payload);
 
-	if (is_type2_dongle) {
-		uint32_t max_tmds_clk =
-			type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK];
-
-		max_tmds_clk = max_tmds_clk * 2 + max_tmds_clk / 2;
-
-		if (0 == max_tmds_clk ||
-				max_tmds_clk < DP_ADAPTOR_TYPE2_MIN_TMDS_CLK ||
-				max_tmds_clk > DP_ADAPTOR_TYPE2_MAX_TMDS_CLK) {
-			*dongle = DISPLAY_DONGLE_DP_DVI_DONGLE;
-
-			CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
-					sizeof(type2_dongle_buf),
-					"DP-DVI passive dongle %dMhz: ",
-					DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000);
-		} else {
-			if (is_valid_hdmi_signature == true) {
-				*dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE;
-
-				CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
-						sizeof(type2_dongle_buf),
-						"Type 2 DP-HDMI passive dongle %dMhz: ",
-						max_tmds_clk);
-			} else {
-				*dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE;
-
-				CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
-						sizeof(type2_dongle_buf),
-						"Type 2 DP-HDMI passive dongle (no signature) %dMhz: ",
-						max_tmds_clk);
-
-			}
-
-			/* Multiply by 1000 to convert to kHz. */
-			sink_cap->max_hdmi_pixel_clock =
-				max_tmds_clk * 1000;
-		}
-		sink_cap->is_dongle_type_one = false;
-
-	} else {
-		if (is_valid_hdmi_signature == true) {
-			*dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE;
-
-			CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
-					sizeof(type2_dongle_buf),
-					"Type 1 DP-HDMI passive dongle %dMhz: ",
-					sink_cap->max_hdmi_pixel_clock / 1000);
-		} else {
-			*dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE;
-
-			CONN_DATA_DETECT(ddc->link, type2_dongle_buf,
-					sizeof(type2_dongle_buf),
-					"Type 1 DP-HDMI passive dongle (no signature) %dMhz: ",
-					sink_cap->max_hdmi_pixel_clock / 1000);
-		}
-		sink_cap->is_dongle_type_one = true;
-	}
+		retrieved += payload_length;
+	} while (retrieved < payload->length && ret == true);
 
-	return;
+	return ret;
 }
 
-enum {
-	DP_SINK_CAP_SIZE =
-		DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV + 1
-};
-
-bool dal_ddc_service_query_ddc_data(
+bool link_query_ddc_data(
 	struct ddc_service *ddc,
 	uint32_t address,
 	uint8_t *write_buf,
@@ -529,7 +314,7 @@ bool dal_ddc_service_query_ddc_data(
 {
 	bool success = true;
 	uint32_t payload_size =
-		dal_ddc_service_is_in_aux_transaction_mode(ddc) ?
+		link_is_in_aux_transaction_mode(ddc) ?
 			DEFAULT_AUX_MAX_DATA_SIZE : EDID_SEGMENT_SIZE;
 
 	uint32_t write_payloads =
@@ -543,13 +328,13 @@ bool dal_ddc_service_query_ddc_data(
 	if (!payloads_num)
 		return false;
 
-	if (dal_ddc_service_is_in_aux_transaction_mode(ddc)) {
+	if (link_is_in_aux_transaction_mode(ddc)) {
 		struct aux_payload payload;
 
 		payload.i2c_over_aux = true;
 		payload.address = address;
 		payload.reply = NULL;
-		payload.defer_delay = get_defer_delay(ddc);
+		payload.defer_delay = link_get_aux_defer_delay(ddc);
 		payload.write_status_update = false;
 
 		if (write_size != 0) {
@@ -561,7 +346,7 @@ bool dal_ddc_service_query_ddc_data(
 			payload.length = write_size;
 			payload.data = write_buf;
 
-			success = dal_ddc_submit_aux_command(ddc, &payload);
+			success = submit_aux_command(ddc, &payload);
 		}
 
 		if (read_size != 0 && success) {
@@ -573,7 +358,7 @@ bool dal_ddc_service_query_ddc_data(
 			payload.length = read_size;
 			payload.data = read_buf;
 
-			success = dal_ddc_submit_aux_command(ddc, &payload);
+			success = submit_aux_command(ddc, &payload);
 		}
 	} else {
 		struct i2c_command command = {0};
@@ -587,10 +372,10 @@ bool dal_ddc_service_query_ddc_data(
 		command.engine = DDC_I2C_COMMAND_ENGINE;
 		command.speed = ddc->ctx->dc->caps.i2c_speed_in_khz;
 
-		dal_ddc_i2c_payloads_add(
+		i2c_payloads_add(
 			&payloads, address, write_size, write_buf, true);
 
-		dal_ddc_i2c_payloads_add(
+		i2c_payloads_add(
 			&payloads, address, read_size, read_buf, false);
 
 		command.number_of_payloads =
@@ -607,51 +392,6 @@ bool dal_ddc_service_query_ddc_data(
 	return success;
 }
 
-bool dal_ddc_submit_aux_command(struct ddc_service *ddc,
-		struct aux_payload *payload)
-{
-	uint32_t retrieved = 0;
-	bool ret = false;
-
-	if (!ddc)
-		return false;
-
-	if (!payload)
-		return false;
-
-	do {
-		struct aux_payload current_payload;
-		bool is_end_of_payload = (retrieved + DEFAULT_AUX_MAX_DATA_SIZE) >=
-				payload->length;
-		uint32_t payload_length = is_end_of_payload ?
-				payload->length - retrieved : DEFAULT_AUX_MAX_DATA_SIZE;
-
-		current_payload.address = payload->address;
-		current_payload.data = &payload->data[retrieved];
-		current_payload.defer_delay = payload->defer_delay;
-		current_payload.i2c_over_aux = payload->i2c_over_aux;
-		current_payload.length = payload_length;
-		/* set mot (middle of transaction) to false if it is the last payload */
-		current_payload.mot = is_end_of_payload ? payload->mot:true;
-		current_payload.write_status_update = false;
-		current_payload.reply = payload->reply;
-		current_payload.write = payload->write;
-
-		ret = dc_link_aux_transfer_with_retries(ddc, &current_payload);
-
-		retrieved += payload_length;
-	} while (retrieved < payload->length && ret == true);
-
-	return ret;
-}
-
-/* dc_link_aux_transfer_raw() - Attempt to transfer
- * the given aux payload.  This function does not perform
- * retries or handle error states.  The reply is returned
- * in the payload->reply and the result through
- * *operation_result.  Returns the number of bytes transferred,
- * or -1 on a failure.
- */
 int dc_link_aux_transfer_raw(struct ddc_service *ddc,
 		struct aux_payload *payload,
 		enum aux_return_code_type *operation_result)
@@ -664,22 +404,14 @@ int dc_link_aux_transfer_raw(struct ddc_service *ddc,
 	}
 }
 
-/* dc_link_aux_transfer_with_retries() - Attempt to submit an
- * aux payload, retrying on timeouts, defers, and busy states
- * as outlined in the DP spec.  Returns true if the request
- * was successful.
- *
- * Unless you want to implement your own retry semantics, this
- * is probably the one you want.
- */
-bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc,
+bool link_aux_transfer_with_retries_no_mutex(struct ddc_service *ddc,
 		struct aux_payload *payload)
 {
 	return dce_aux_transfer_with_retries(ddc, payload);
 }
 
 
-bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc,
+bool try_to_configure_aux_timeout(struct ddc_service *ddc,
 		uint32_t timeout)
 {
 	bool result = false;
@@ -712,20 +444,12 @@ bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc,
 	return result;
 }
 
-/*test only function*/
-void dal_ddc_service_set_ddc_pin(
-	struct ddc_service *ddc_service,
-	struct ddc *ddc)
-{
-	ddc_service->ddc_pin = ddc;
-}
-
-struct ddc *dal_ddc_service_get_ddc_pin(struct ddc_service *ddc_service)
+struct ddc *get_ddc_pin(struct ddc_service *ddc_service)
 {
 	return ddc_service->ddc_pin;
 }
 
-void dal_ddc_service_write_scdc_data(struct ddc_service *ddc_service,
+void write_scdc_data(struct ddc_service *ddc_service,
 		uint32_t pix_clk,
 		bool lte_340_scramble)
 {
@@ -740,13 +464,13 @@ void dal_ddc_service_write_scdc_data(struct ddc_service *ddc_service,
 		ddc_service->link->local_sink->edid_caps.panel_patch.skip_scdc_overwrite)
 		return;
 
-	dal_ddc_service_query_ddc_data(ddc_service, slave_address, &offset,
+	link_query_ddc_data(ddc_service, slave_address, &offset,
 			sizeof(offset), &sink_version, sizeof(sink_version));
 	if (sink_version == 1) {
 		/*Source Version = 1*/
 		write_buffer[0] = HDMI_SCDC_SOURCE_VERSION;
 		write_buffer[1] = 1;
-		dal_ddc_service_query_ddc_data(ddc_service, slave_address,
+		link_query_ddc_data(ddc_service, slave_address,
 				write_buffer, sizeof(write_buffer), NULL, 0);
 		/*Read Request from SCDC caps*/
 	}
@@ -759,11 +483,11 @@ void dal_ddc_service_write_scdc_data(struct ddc_service *ddc_service,
 	} else {
 		write_buffer[1] = 0;
 	}
-	dal_ddc_service_query_ddc_data(ddc_service, slave_address, write_buffer,
+	link_query_ddc_data(ddc_service, slave_address, write_buffer,
 			sizeof(write_buffer), NULL, 0);
 }
 
-void dal_ddc_service_read_scdc_data(struct ddc_service *ddc_service)
+void read_scdc_data(struct ddc_service *ddc_service)
 {
 	uint8_t slave_address = HDMI_SCDC_ADDRESS;
 	uint8_t offset = HDMI_SCDC_TMDS_CONFIG;
@@ -773,20 +497,19 @@ void dal_ddc_service_read_scdc_data(struct ddc_service *ddc_service)
 		ddc_service->link->local_sink->edid_caps.panel_patch.skip_scdc_overwrite)
 		return;
 
-	dal_ddc_service_query_ddc_data(ddc_service, slave_address, &offset,
+	link_query_ddc_data(ddc_service, slave_address, &offset,
 			sizeof(offset), &tmds_config, sizeof(tmds_config));
 	if (tmds_config & 0x1) {
 		union hdmi_scdc_status_flags_data status_data = {0};
 		uint8_t scramble_status = 0;
 
 		offset = HDMI_SCDC_SCRAMBLER_STATUS;
-		dal_ddc_service_query_ddc_data(ddc_service, slave_address,
+		link_query_ddc_data(ddc_service, slave_address,
 				&offset, sizeof(offset), &scramble_status,
 				sizeof(scramble_status));
 		offset = HDMI_SCDC_STATUS_FLAGS;
-		dal_ddc_service_query_ddc_data(ddc_service, slave_address,
+		link_query_ddc_data(ddc_service, slave_address,
 				&offset, sizeof(offset), &status_data.byte,
 				sizeof(status_data.byte));
 	}
 }
-
diff --git a/drivers/gpu/drm/amd/display/include/i2caux_interface.h b/drivers/gpu/drm/amd/display/dc/link/link_ddc.h
similarity index 52%
rename from drivers/gpu/drm/amd/display/include/i2caux_interface.h
rename to drivers/gpu/drm/amd/display/dc/link/link_ddc.h
index 418fbf8c5c3a..71a342d0395e 100644
--- a/drivers/gpu/drm/amd/display/include/i2caux_interface.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_ddc.h
@@ -23,60 +23,37 @@
  *
  */
 
-#ifndef __DAL_I2CAUX_INTERFACE_H__
-#define __DAL_I2CAUX_INTERFACE_H__
+#ifndef __DAL_DDC_SERVICE_H__
+#define __DAL_DDC_SERVICE_H__
 
-#include "dc_types.h"
-#include "gpio_service_interface.h"
+#include "link.h"
 
+#define AUX_POWER_UP_WA_DELAY 500
+#define I2C_OVER_AUX_DEFER_WA_DELAY 70
+#define DPVGA_DONGLE_AUX_DEFER_WA_DELAY 40
+#define I2C_OVER_AUX_DEFER_WA_DELAY_1MS 1
 
-#define DEFAULT_AUX_MAX_DATA_SIZE 16
-#define AUX_MAX_DEFER_WRITE_RETRY 20
+#define EDID_SEGMENT_SIZE 256
 
-struct aux_payload {
-	/* set following flag to read/write I2C data,
-	 * reset it to read/write DPCD data */
-	bool i2c_over_aux;
-	/* set following flag to write data,
-	 * reset it to read data */
-	bool write;
-	bool mot;
-	bool write_status_update;
+void set_ddc_transaction_type(
+		struct ddc_service *ddc,
+		enum ddc_transaction_type type);
 
-	uint32_t address;
-	uint32_t length;
-	uint8_t *data;
-	/*
-	 * used to return the reply type of the transaction
-	 * ignored if NULL
-	 */
-	uint8_t *reply;
-	/* expressed in milliseconds
-	 * zero means "use default value"
-	 */
-	uint32_t defer_delay;
+bool try_to_configure_aux_timeout(struct ddc_service *ddc,
+		uint32_t timeout);
 
-};
+void write_scdc_data(
+		struct ddc_service *ddc_service,
+		uint32_t pix_clk,
+		bool lte_340_scramble);
 
-struct aux_command {
-	struct aux_payload *payloads;
-	uint8_t number_of_payloads;
+void read_scdc_data(
+		struct ddc_service *ddc_service);
 
-	/* expressed in milliseconds
-	 * zero means "use default value" */
-	uint32_t defer_delay;
+void set_dongle_type(struct ddc_service *ddc,
+		enum display_dongle_type dongle_type);
 
-	/* zero means "use default value" */
-	uint32_t max_defer_write_retry;
+struct ddc *get_ddc_pin(struct ddc_service *ddc_service);
 
-	enum i2c_mot_mode mot;
-};
+#endif /* __DAL_DDC_SERVICE_H__ */
 
-union aux_config {
-	struct {
-		uint32_t ALLOW_AUX_WHEN_HPD_LOW:1;
-	} bits;
-	uint32_t raw;
-};
-
-#endif
-- 
2.39.0

[PATCH 08/37] drm/amd/display: move dpcd logic from dc_link_dpcd to link_dpcd

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

[why]
Moving dpcd logic from dc_link_dpcd to link_dpcd as part of link file
restructure

Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/Makefile             |  2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c       |  2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c    |  2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c  |  2 +-
 .../drm/amd/display/dc/dce110/dce110_hw_sequencer.c |  1 -
 .../drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c   |  1 -
 .../drm/amd/display/dc/dcn10/dcn10_stream_encoder.c |  2 +-
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c  |  1 -
 .../drm/amd/display/dc/dcn20/dcn20_stream_encoder.c |  2 +-
 drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c  |  1 -
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c  |  1 -
 .../display/dc/dcn314/dcn314_dio_stream_encoder.c   |  2 +-
 .../gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c    |  1 -
 .../amd/display/dc/dcn32/dcn32_dio_stream_encoder.c |  2 +-
 drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c      |  2 +-
 drivers/gpu/drm/amd/display/dc/link/Makefile        |  2 +-
 .../dc/{core/dc_link_dpcd.c => link/link_dpcd.c}    | 13 ++++++++-----
 .../drm/amd/display/dc/{inc => link}/link_dpcd.h    |  4 +---
 18 files changed, 19 insertions(+), 24 deletions(-)
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_dpcd.c => link/link_dpcd.c} (97%)
 rename drivers/gpu/drm/amd/display/dc/{inc => link}/link_dpcd.h (95%)

diff --git a/drivers/gpu/drm/amd/display/dc/Makefile b/drivers/gpu/drm/amd/display/dc/Makefile
index 4438f3c16636..c5b7bcba5a3d 100644
--- a/drivers/gpu/drm/amd/display/dc/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/Makefile
@@ -66,7 +66,7 @@ include $(AMD_DC)
 
 DISPLAY_CORE = dc.o dc_stat.o dc_link.o dc_resource.o dc_hw_sequencer.o dc_sink.o \
 dc_surface.o dc_link_dp.o dc_debug.o dc_stream.o \
-dc_link_enc_cfg.o dc_link_dpia.o dc_link_dpcd.o
+dc_link_enc_cfg.o dc_link_dpia.o
 
 DISPLAY_CORE += dc_vm_helper.o
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index b5572f5202ca..b20dde4b05d5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -51,7 +51,7 @@
 #include "dmub/dmub_srv.h"
 #include "inc/hw/panel_cntl.h"
 #include "inc/link_enc_cfg.h"
-#include "inc/link_dpcd.h"
+#include "link/link_dpcd.h"
 #include "link/link_dp_trace.h"
 #include "link/link_hpd.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 815652da4126..9f2f10a957f6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -50,7 +50,7 @@ static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
 	link->ctx->logger
 #define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
 
-#include "link_dpcd.h"
+#include "link/link_dpcd.h"
 
 #ifndef MAX
 #define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c
index d130d58ac08e..e1db05966d83 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c
@@ -33,7 +33,7 @@
 #include "link_hwss.h"
 #include "dm_helpers.h"
 #include "dmub/inc/dmub_cmd.h"
-#include "inc/link_dpcd.h"
+#include "link/link_dpcd.h"
 #include "dc_dmub_srv.h"
 
 #define DC_LOGGER \
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 358431f0d98a..833a1c37cbe4 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -55,7 +55,6 @@
 #include "audio.h"
 #include "reg_helper.h"
 #include "panel_cntl.h"
-#include "inc/link_dpcd.h"
 #include "dpcd_defs.h"
 /* include DCE11 register header files */
 #include "dce/dce_11_0_d.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index fe2023f18b7d..c1d4e66b413f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -57,7 +57,6 @@
 #include "dc_trace.h"
 #include "dce/dmub_outbox.h"
 #include "inc/dc_link_dp.h"
-#include "inc/link_dpcd.h"
 
 #define DC_LOGGER_INIT(logger)
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
index 484e7cdf00b8..1527c3b4fb19 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
@@ -28,7 +28,7 @@
 #include "dcn10_stream_encoder.h"
 #include "reg_helper.h"
 #include "hw_shared.h"
-#include "inc/link_dpcd.h"
+#include "dc_link_dp.h"
 #include "dpcd_defs.h"
 #include "dcn30/dcn30_afmt.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 20c85ef2a957..c2066a5057e8 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -52,7 +52,6 @@
 #include "dc_dmub_srv.h"
 #include "dce/dmub_hw_lock_mgr.h"
 #include "hw_sequencer.h"
-#include "inc/link_dpcd.h"
 #include "dpcd_defs.h"
 #include "inc/link_enc_cfg.h"
 #include "link_hwss.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
index b40489e678f9..cacf3f5298b0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
@@ -29,7 +29,7 @@
 #include "dcn20_stream_encoder.h"
 #include "reg_helper.h"
 #include "hw_shared.h"
-#include "inc/link_dpcd.h"
+#include "dc_link_dp.h"
 #include "dpcd_defs.h"
 
 #define DC_LOGGER \
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
index 8c5045711264..7360b3ce4283 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -51,7 +51,6 @@
 #include "../dcn20/dcn20_hwseq.h"
 #include "dcn30_resource.h"
 #include "inc/dc_link_dp.h"
-#include "inc/link_dpcd.h"
 
 
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
index 165c920ca776..3b354f0db2a5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -46,7 +46,6 @@
 #include "dpcd_defs.h"
 #include "dce/dmub_outbox.h"
 #include "dc_link_dp.h"
-#include "inc/link_dpcd.h"
 #include "dcn10/dcn10_hw_sequencer.h"
 #include "inc/link_enc_cfg.h"
 #include "dcn30/dcn30_vpg.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
index 0926db018338..9c9875368bea 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
@@ -30,7 +30,7 @@
 #include "dcn314_dio_stream_encoder.h"
 #include "reg_helper.h"
 #include "hw_shared.h"
-#include "inc/link_dpcd.h"
+#include "dc_link_dp.h"
 #include "dpcd_defs.h"
 
 #define DC_LOGGER \
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
index a0741794db62..edc2c08939b0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
@@ -48,7 +48,6 @@
 #include "dce/dmub_outbox.h"
 #include "dc_link_dp.h"
 #include "inc/dc_link_dp.h"
-#include "inc/link_dpcd.h"
 #include "dcn10/dcn10_hw_sequencer.h"
 #include "inc/link_enc_cfg.h"
 #include "dcn30/dcn30_vpg.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
index 7d09c62a405a..f01968f6d182 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
@@ -29,7 +29,7 @@
 #include "dcn32_dio_stream_encoder.h"
 #include "reg_helper.h"
 #include "hw_shared.h"
-#include "inc/link_dpcd.h"
+#include "dc_link_dp.h"
 #include "dpcd_defs.h"
 
 #define DC_LOGGER \
diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
index 6c4b47f90d49..906a43e85f6d 100644
--- a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
+++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
@@ -32,7 +32,7 @@
 #include "core_types.h"
 #include "link.h"
 #include "link_hwss.h"
-#include "inc/link_dpcd.h"
+#include "link/link_dpcd.h"
 
 #define DC_LOGGER \
 	link->ctx->logger
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index d1b1bb3c5352..b905c53e738b 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -24,7 +24,7 @@
 # PHY, HPD, DDC and etc).
 
 LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
-link_hpd.o link_ddc.o
+link_hpd.o link_ddc.o link_dpcd.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c b/drivers/gpu/drm/amd/display/dc/link/link_dpcd.c
similarity index 97%
rename from drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c
rename to drivers/gpu/drm/amd/display/dc/link/link_dpcd.c
index af110bf9470f..5c9a30211c10 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpcd.c
@@ -23,11 +23,14 @@
  *
  */
 
-#include <inc/core_status.h>
-#include <dc_link.h>
-#include <inc/link_hwss.h>
-#include <inc/link_dpcd.h>
-#include <dc_dp_types.h>
+/* FILE POLICY AND INTENDED USAGE:
+ *
+ * This file implements basic dpcd read/write functionality. It also does basic
+ * dpcd range check to ensure that every dpcd request is compliant with specs
+ * range requirements.
+ */
+
+#include "link_dpcd.h"
 #include <drm/display/drm_dp_helper.h>
 #include "dm_helpers.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link_dpcd.h b/drivers/gpu/drm/amd/display/dc/link/link_dpcd.h
similarity index 95%
rename from drivers/gpu/drm/amd/display/dc/inc/link_dpcd.h
rename to drivers/gpu/drm/amd/display/dc/link/link_dpcd.h
index d561f86d503c..27b08cdbb4a1 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link_dpcd.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpcd.h
@@ -25,9 +25,7 @@
 
 #ifndef __LINK_DPCD_H__
 #define __LINK_DPCD_H__
-#include <inc/core_status.h>
-#include <dc_link.h>
-#include <dc_link_dp.h>
+#include "link.h"
 
 enum dc_status core_link_read_dpcd(
 		struct dc_link *link,
-- 
2.39.0

[PATCH 09/37] drm/amd/display: move dc_link_dpia logic to link_dp_dpia

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/Makefile                       | 2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c                 | 2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c              | 2 +-
 drivers/gpu/drm/amd/display/dc/link/Makefile                  | 2 +-
 .../display/dc/{core/dc_link_dpia.c => link/link_dp_dpia.c}   | 3 ++-
 .../display/dc/{inc/dc_link_dpia.h => link/link_dp_dpia.h}    | 4 +---
 6 files changed, 7 insertions(+), 8 deletions(-)
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_dpia.c => link/link_dp_dpia.c} (99%)
 rename drivers/gpu/drm/amd/display/dc/{inc/dc_link_dpia.h => link/link_dp_dpia.h} (98%)

diff --git a/drivers/gpu/drm/amd/display/dc/Makefile b/drivers/gpu/drm/amd/display/dc/Makefile
index c5b7bcba5a3d..98c508313350 100644
--- a/drivers/gpu/drm/amd/display/dc/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/Makefile
@@ -66,7 +66,7 @@ include $(AMD_DC)
 
 DISPLAY_CORE = dc.o dc_stat.o dc_link.o dc_resource.o dc_hw_sequencer.o dc_sink.o \
 dc_surface.o dc_link_dp.o dc_debug.o dc_stream.o \
-dc_link_enc_cfg.o dc_link_dpia.o
+dc_link_enc_cfg.o
 
 DISPLAY_CORE += dc_vm_helper.o
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index b20dde4b05d5..cb3a57190cb7 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -33,7 +33,7 @@
 #include "gpio_service_interface.h"
 #include "core_status.h"
 #include "dc_link_dp.h"
-#include "dc_link_dpia.h"
+#include "link/link_dp_dpia.h"
 #include "link/link_ddc.h"
 #include "link_hwss.h"
 #include "link.h"
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 9f2f10a957f6..9edfcdf3db3b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -37,7 +37,7 @@
 #include "dpcd_defs.h"
 #include "dc_dmub_srv.h"
 #include "dce/dmub_hw_lock_mgr.h"
-#include "inc/dc_link_dpia.h"
+#include "link/link_dp_dpia.h"
 #include "inc/link_enc_cfg.h"
 #include "link/link_dp_trace.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index b905c53e738b..69333ac9bab0 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -24,7 +24,7 @@
 # PHY, HPD, DDC and etc).
 
 LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
-link_hpd.o link_ddc.o link_dpcd.o
+link_hpd.o link_ddc.o link_dpcd.o link_dp_dpia.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
similarity index 99%
rename from drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c
rename to drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
index e1db05966d83..47ad2cae483b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
@@ -25,11 +25,12 @@
  */
 
 #include "dc.h"
-#include "dc_link_dpia.h"
 #include "inc/core_status.h"
 #include "dc_link.h"
 #include "dc_link_dp.h"
 #include "dpcd_defs.h"
+
+#include "link_dp_dpia.h"
 #include "link_hwss.h"
 #include "dm_helpers.h"
 #include "dmub/inc/dmub_cmd.h"
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
similarity index 98%
rename from drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h
rename to drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
index 39c1d1d07357..1e97e4264dde 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
@@ -27,11 +27,9 @@
 #ifndef __DC_LINK_DPIA_H__
 #define __DC_LINK_DPIA_H__
 
+#include "link.h"
 /* This module implements functionality for training DPIA links. */
 
-struct dc_link;
-struct dc_link_settings;
-
 /* The approximate time (us) it takes to transmit 9 USB4 DP clock sync packets. */
 #define DPIA_CLK_SYNC_DELAY 16000
 
-- 
2.39.0

[PATCH 10/37] drm/amd/display: Update dmub header to match DMUB

[Rodrigo Siqueira]

From: Mustapha Ghaddar <mghaddar@amd.com>

[WHY]
Last PR missed name of a struct to match in DMUB

[HOW]
Update the logic in dmub_cmh.h header

Reviewed-by: Meenakshikumar Somasundaram <Meenakshikumar.Somasundaram@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Mustapha Ghaddar <mghaddar@amd.com>
---
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |  16 +-
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   | 165 +++++++++---------
 .../drm/amd/display/dmub/src/dmub_srv_stat.c  |  20 +--
 3 files changed, 109 insertions(+), 92 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index c8274967de94..a391b939d709 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -130,6 +130,17 @@ enum dmub_notification_type {
 	DMUB_NOTIFICATION_MAX
 };
 
+/**
+ * DPIA NOTIFICATION Response Type
+ */
+enum dpia_notify_bw_alloc_status {
+
+	DPIA_BW_REQ_FAILED = 0,
+	DPIA_BW_REQ_SUCCESS,
+	DPIA_EST_BW_CHANGED,
+	DPIA_BW_ALLOC_CAPS_CHANGED
+};
+
 /**
  * struct dmub_region - dmub hw memory region
  * @base: base address for region, must be 256 byte aligned
@@ -465,7 +476,10 @@ struct dmub_notification {
 		struct aux_reply_data aux_reply;
 		enum dp_hpd_status hpd_status;
 		enum set_config_status sc_status;
-		struct dpia_notification_reply_data bw_alloc_reply;
+		/**
+		 * DPIA notification command.
+		 */
+		struct dmub_rb_cmd_dpia_notification dpia_notification;
 	};
 };
 
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 4dcd82d19ccf..328978ec6814 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -770,7 +770,10 @@ enum dmub_out_cmd_type {
 	 * Command type used for SET_CONFIG Reply notification
 	 */
 	DMUB_OUT_CMD__SET_CONFIG_REPLY = 3,
-	DMUB_OUT_CMD__DPIA_NOTIFICATION = 5
+	/**
+	 * Command type used for USB4 DPIA notification
+	 */
+	DMUB_OUT_CMD__DPIA_NOTIFICATION = 5,
 };
 
 /* DMUB_CMD__DPIA command sub-types. */
@@ -780,6 +783,11 @@ enum dmub_cmd_dpia_type {
 	DMUB_CMD__DPIA_MST_ALLOC_SLOTS = 2,
 };
 
+/* DMUB_OUT_CMD__DPIA_NOTIFICATION command types. */
+enum dmub_cmd_dpia_notification_type {
+	DPIA_NOTIFY__BW_ALLOCATION = 0,
+};
+
 #pragma pack(push, 1)
 
 /**
@@ -1517,84 +1525,6 @@ struct dp_hpd_data {
 	uint8_t pad;
 };
 
-/**
- * DPIA NOTIFICATION Response Type
- */
-enum dpia_notify_bw_alloc_status {
-
-	DPIA_BW_REQ_FAILED = 0,
-	DPIA_BW_REQ_SUCCESS,
-	DPIA_EST_BW_CHANGED,
-	DPIA_BW_ALLOC_CAPS_CHANGED
-};
-
-/* DMUB_OUT_CMD__DPIA_NOTIFY Reply command - OutBox Cmd */
-/**
- * Data passed to driver from FW in a DMUB_OUT_CMD__DPIA_NOTIFY command.
- */
-struct dpia_notification_reply_data {
-	uint8_t allocated_bw;
-	uint8_t estimated_bw;
-};
-
-struct dpia_notification_common {
-	bool shared;
-};
-
-struct dpia_bw_allocation_notify_data {
-	union {
-		struct {
-			uint16_t cm_bw_alloc_support: 1;	/**< USB4 CM BW Allocation mode support */
-			uint16_t bw_request_failed: 1;		/**< BW_Request_Failed */
-			uint16_t bw_request_succeeded: 1;	/**< BW_Request_Succeeded */
-			uint16_t est_bw_changed: 1;			/**< Estimated_BW changed */
-			uint16_t bw_alloc_cap_changed: 1;	/**< BW_Allocation_Capabiity_Changed */
-			uint16_t reserved: 11;
-		} bits;
-		uint16_t flags;
-	};
-	uint8_t cm_id;			/**< CM ID */
-	uint8_t group_id;		/**< Group ID */
-	uint8_t granularity;	/**< BW Allocation Granularity */
-	uint8_t estimated_bw;	/**< Estimated_BW */
-	uint8_t allocated_bw;	/**< Allocated_BW */
-	uint8_t reserved;
-};
-
-union dpia_notification_data {
-	struct dpia_notification_common common_data;
-	struct dpia_bw_allocation_notify_data dpia_bw_alloc;	/**< Used for DPIA BW Allocation mode notification */
-};
-
-enum dmub_cmd_dpia_notification_type {
-	DPIA_NOTIFY__BW_ALLOCATION = 0,
-};
-
-struct dpia_notification_header {
-	uint8_t instance;							/**< DPIA Instance */
-	uint8_t reserved[3];
-	enum dmub_cmd_dpia_notification_type type;	/**< DPIA notification type */
-};
-
-struct dpia_notification_payload {
-	struct dpia_notification_header  header;
-	union dpia_notification_data      data;   /**< DPIA notification data */
-};
-
-/**
- * Definition of a DMUB_OUT_CMD__DPIA_NOTIFY command.
- */
-struct dmub_rb_cmd_dpia_notification {
-	/**
-	 * Command header.
-	 */
-	struct dmub_cmd_header header;  /**< DPIA notification header */
-	/**
-	 * Data passed to driver from FW in a DMUB_OUT_CMD__DPIA_NOTIFY command.
-	 */
-	struct dpia_notification_payload payload; /**< DPIA notification payload */
-};
-
 /**
  * Definition of a DMUB_OUT_CMD__DP_HPD_NOTIFY command.
  */
@@ -1636,6 +1566,79 @@ struct dmub_rb_cmd_dp_set_config_reply {
 	struct set_config_reply_control_data set_config_reply_control;
 };
 
+/**
+ * Definition of a DPIA notification header
+ */
+struct dpia_notification_header {
+	uint8_t instance; /**< DPIA Instance */
+	uint8_t reserved[3];
+	enum dmub_cmd_dpia_notification_type type; /**< DPIA notification type */
+};
+
+/**
+ * Definition of the common data struct of DPIA notification
+ */
+struct dpia_notification_common {
+	uint8_t cmd_buffer[DMUB_RB_CMD_SIZE - sizeof(struct dmub_cmd_header)
+								- sizeof(struct dpia_notification_header)];
+};
+
+/**
+ * Definition of a DPIA notification data
+ */
+struct dpia_bw_allocation_notify_data {
+	union {
+		struct {
+			uint16_t cm_bw_alloc_support: 1; /**< USB4 CM BW Allocation mode support */
+			uint16_t bw_request_failed: 1; /**< BW_Request_Failed */
+			uint16_t bw_request_succeeded: 1; /**< BW_Request_Succeeded */
+			uint16_t est_bw_changed: 1; /**< Estimated_BW changed */
+			uint16_t bw_alloc_cap_changed: 1; /**< BW_Allocation_Capabiity_Changed */
+			uint16_t reserved: 11; /**< Reserved */
+		} bits;
+
+		uint16_t flags;
+	};
+
+	uint8_t cm_id; /**< CM ID */
+	uint8_t group_id; /**< Group ID */
+	uint8_t granularity; /**< BW Allocation Granularity */
+	uint8_t estimated_bw; /**< Estimated_BW */
+	uint8_t allocated_bw; /**< Allocated_BW */
+	uint8_t reserved;
+};
+
+/**
+ * union dpia_notify_data_type - DPIA Notification in Outbox command
+ */
+union dpia_notification_data {
+	/**
+	 * DPIA Notification for common data struct
+	 */
+	struct dpia_notification_common common_data;
+
+	/**
+	 * DPIA Notification for DP BW Allocation support
+	 */
+	struct dpia_bw_allocation_notify_data dpia_bw_alloc;
+};
+
+/**
+ * Definition of a DPIA notification payload
+ */
+struct dpia_notification_payload {
+	struct dpia_notification_header header;
+	union dpia_notification_data data; /**< DPIA notification payload data */
+};
+
+/**
+ * Definition of a DMUB_OUT_CMD__DPIA_NOTIFICATION command.
+ */
+struct dmub_rb_cmd_dpia_notification {
+	struct dmub_cmd_header header; /**< DPIA notification header */
+	struct dpia_notification_payload payload; /**< DPIA notification payload */
+};
+
 /**
  * Data passed from driver to FW in a DMUB_CMD__QUERY_HPD_STATE command.
  */
@@ -3502,9 +3505,9 @@ union dmub_rb_out_cmd {
 	 */
 	struct dmub_rb_cmd_dp_set_config_reply set_config_reply;
 	/**
-	 * BW ALLOCATION notification command.
+	 * DPIA notification command.
 	 */
-	struct dmub_rb_cmd_dpia_notification dpia_notify;
+	struct dmub_rb_cmd_dpia_notification dpia_notification;
 };
 #pragma pack(pop)
 
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c
index 4948f9724db2..74189102eaec 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c
@@ -94,22 +94,22 @@ enum dmub_status dmub_srv_stat_get_notification(struct dmub_srv *dmub,
 		break;
 	case DMUB_OUT_CMD__DPIA_NOTIFICATION:
 		notify->type = DMUB_NOTIFICATION_DPIA_NOTIFICATION;
-		notify->link_index = cmd.dpia_notify.payload.header.instance;
+		notify->link_index = cmd.dpia_notification.payload.header.instance;
 
-		if (cmd.dpia_notify.payload.header.type == DPIA_NOTIFY__BW_ALLOCATION) {
+		if (cmd.dpia_notification.payload.header.type == DPIA_NOTIFY__BW_ALLOCATION) {
 
-			notify->bw_alloc_reply.estimated_bw =
-					cmd.dpia_notify.payload.data.dpia_bw_alloc.estimated_bw;
-			notify->bw_alloc_reply.allocated_bw =
-					cmd.dpia_notify.payload.data.dpia_bw_alloc.allocated_bw;
+			notify->dpia_notification.payload.data.dpia_bw_alloc.estimated_bw =
+					cmd.dpia_notification.payload.data.dpia_bw_alloc.estimated_bw;
+			notify->dpia_notification.payload.data.dpia_bw_alloc.allocated_bw =
+					cmd.dpia_notification.payload.data.dpia_bw_alloc.allocated_bw;
 
-			if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_failed)
+			if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_request_failed)
 				notify->result = DPIA_BW_REQ_FAILED;
-			else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_succeeded)
+			else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_request_succeeded)
 				notify->result = DPIA_BW_REQ_SUCCESS;
-			else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.est_bw_changed)
+			else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.est_bw_changed)
 				notify->result = DPIA_EST_BW_CHANGED;
-			else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_alloc_cap_changed)
+			else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_alloc_cap_changed)
 				notify->result = DPIA_BW_ALLOC_CAPS_CHANGED;
 		}
 		break;
-- 
2.39.0

[PATCH 11/37] drm/amd/display: add hubbub_init related

[Rodrigo Siqueira]

From: Charlene Liu <Charlene.Liu@amd.com>

Required by display init, also update get_dig_mode

Reviewed-by: Hansen Dsouza <hansen.dsouza@amd.com>
Reviewed-by: Duncan Ma <duncan.ma@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
---
 .../drm/amd/display/dc/dcn10/dcn10_hubbub.h   | 12 +++++++-
 .../drm/amd/display/dc/dcn31/dcn31_hubbub.c   | 18 ++++++++++++
 .../drm/amd/display/dc/dcn31/dcn31_hubbub.h   | 10 ++++++-
 .../drm/amd/display/dc/dcn32/dcn32_hubbub.c   | 29 +++++++++++++++++++
 .../drm/amd/display/dc/dcn32/dcn32_hubbub.h   | 17 +++++++++--
 .../gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c |  6 +++-
 .../gpu/drm/amd/display/dc/inc/hw/dchubbub.h  |  1 +
 7 files changed, 88 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
index ba1c0621f0f8..e8752077571a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
@@ -172,6 +172,10 @@ struct dcn_hubbub_registers {
 	uint32_t DCHUBBUB_ARB_FCLK_PSTATE_CHANGE_WATERMARK_C;
 	uint32_t DCHUBBUB_ARB_FCLK_PSTATE_CHANGE_WATERMARK_D;
 	uint32_t SDPIF_REQUEST_RATE_LIMIT;
+	uint32_t DCHUBBUB_SDPIF_CFG0;
+	uint32_t DCHUBBUB_SDPIF_CFG1;
+	uint32_t DCHUBBUB_CLOCK_CNTL;
+	uint32_t DCHUBBUB_MEM_PWR_MODE_CTRL;
 };
 
 #define HUBBUB_REG_FIELD_LIST_DCN32(type) \
@@ -362,7 +366,13 @@ struct dcn_hubbub_registers {
 		type DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_Z8_C;\
 		type DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_Z8_D;\
 		type DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_Z8_D;\
-		type SDPIF_REQUEST_RATE_LIMIT
+		type SDPIF_REQUEST_RATE_LIMIT;\
+		type DISPCLK_R_DCHUBBUB_GATE_DIS;\
+		type DCFCLK_R_DCHUBBUB_GATE_DIS;\
+		type SDPIF_MAX_NUM_OUTSTANDING;\
+		type DCHUBBUB_ARB_MAX_REQ_OUTSTAND;\
+		type SDPIF_PORT_CONTROL;\
+		type DET_MEM_PWR_LS_MODE
 
 
 struct dcn_hubbub_shift {
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c
index 6360dc9502e7..7e7cd5b64e6a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c
@@ -1008,6 +1008,24 @@ static bool hubbub31_verify_allow_pstate_change_high(struct hubbub *hubbub)
 	return false;
 }
 
+void hubbub31_init(struct hubbub *hubbub)
+{
+	struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub);
+
+	/*Enable clock gate*/
+	if (hubbub->ctx->dc->debug.disable_clock_gate) {
+		/*done in hwseq*/
+		/*REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);*/
+		REG_UPDATE_2(DCHUBBUB_CLOCK_CNTL,
+				DISPCLK_R_DCHUBBUB_GATE_DIS, 0,
+				DCFCLK_R_DCHUBBUB_GATE_DIS, 0);
+	}
+
+	/*
+	only the DCN will determine when to connect the SDP port
+	*/
+	REG_UPDATE(DCHUBBUB_SDPIF_CFG0,	SDPIF_PORT_CONTROL, 1);
+}
 static const struct hubbub_funcs hubbub31_funcs = {
 	.update_dchub = hubbub2_update_dchub,
 	.init_dchub_sys_ctx = hubbub31_init_dchub_sys_ctx,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h
index 70c60de448ac..e015e5a6c866 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h
@@ -42,6 +42,10 @@
 	SR(DCHUBBUB_COMPBUF_CTRL),\
 	SR(COMPBUF_RESERVED_SPACE),\
 	SR(DCHUBBUB_DEBUG_CTRL_0),\
+	SR(DCHUBBUB_CLOCK_CNTL),\
+	SR(DCHUBBUB_SDPIF_CFG0),\
+	SR(DCHUBBUB_SDPIF_CFG1),\
+	SR(DCHUBBUB_MEM_PWR_MODE_CTRL),\
 	SR(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_Z8_A),\
 	SR(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_Z8_A),\
 	SR(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_Z8_B),\
@@ -120,7 +124,11 @@
 	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_VMID, mask_sh), \
 	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_TABLE_LEVEL, mask_sh), \
 	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_PIPE, mask_sh), \
-	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_INTERRUPT_STATUS, mask_sh)
+	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_INTERRUPT_STATUS, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_CLOCK_CNTL, DISPCLK_R_DCHUBBUB_GATE_DIS, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_CLOCK_CNTL, DCFCLK_R_DCHUBBUB_GATE_DIS, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_SDPIF_CFG0, SDPIF_PORT_CONTROL, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_MEM_PWR_MODE_CTRL, DET_MEM_PWR_LS_MODE, mask_sh)
 
 int hubbub31_init_dchub_sys_ctx(struct hubbub *hubbub,
 		struct dcn_hubbub_phys_addr_config *pa_config);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
index 9501403a48a9..eb08ccc38e79 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
@@ -945,6 +945,35 @@ void hubbub32_force_wm_propagate_to_pipes(struct hubbub *hubbub)
 			DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, prog_wm_value);
 }
 
+void hubbub32_init(struct hubbub *hubbub)
+{
+	struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub);
+
+	/* Enable clock gate*/
+	if (hubbub->ctx->dc->debug.disable_clock_gate) {
+		/*done in hwseq*/
+		/*REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);*/
+
+		REG_UPDATE_2(DCHUBBUB_CLOCK_CNTL,
+			DISPCLK_R_DCHUBBUB_GATE_DIS, 0,
+			DCFCLK_R_DCHUBBUB_GATE_DIS, 0);
+	}
+	/*
+	ignore the "df_pre_cstate_req" from the SDP port control.
+	only the DCN will determine when to connect the SDP port
+	*/
+	REG_UPDATE(DCHUBBUB_SDPIF_CFG0,
+			SDPIF_PORT_CONTROL, 1);
+	/*Set SDP's max outstanding request to 512
+	must set the register back to 0 (max outstanding = 256) in zero frame buffer mode*/
+	REG_UPDATE(DCHUBBUB_SDPIF_CFG1,
+			SDPIF_MAX_NUM_OUTSTANDING, 1);
+	/*must set the registers back to 256 in zero frame buffer mode*/
+	REG_UPDATE_2(DCHUBBUB_ARB_DF_REQ_OUTSTAND,
+			DCHUBBUB_ARB_MAX_REQ_OUTSTAND, 512,
+			DCHUBBUB_ARB_MIN_REQ_OUTSTAND, 512);
+}
+
 static const struct hubbub_funcs hubbub32_funcs = {
 	.update_dchub = hubbub2_update_dchub,
 	.init_dchub_sys_ctx = hubbub3_init_dchub_sys_ctx,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.h b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.h
index 786f9ce07f92..bdc146890fca 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.h
@@ -83,7 +83,12 @@
 	SR(DCN_VM_FAULT_ADDR_LSB),\
 	SR(DCN_VM_FAULT_CNTL),\
 	SR(DCN_VM_FAULT_STATUS),\
-	SR(SDPIF_REQUEST_RATE_LIMIT)
+	SR(SDPIF_REQUEST_RATE_LIMIT),\
+	SR(DCHUBBUB_CLOCK_CNTL),\
+	SR(DCHUBBUB_SDPIF_CFG0),\
+	SR(DCHUBBUB_SDPIF_CFG1),\
+	SR(DCHUBBUB_MEM_PWR_MODE_CTRL)
+
 
 #define HUBBUB_MASK_SH_LIST_DCN32(mask_sh)\
 	HUBBUB_SF(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_ENABLE, mask_sh), \
@@ -96,6 +101,7 @@
 	HUBBUB_SF(DCHUBBUB_ARB_DRAM_STATE_CNTL, DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_ENABLE, mask_sh), \
 	HUBBUB_SF(DCHUBBUB_ARB_SAT_LEVEL, DCHUBBUB_ARB_SAT_LEVEL, mask_sh), \
 	HUBBUB_SF(DCHUBBUB_ARB_DF_REQ_OUTSTAND, DCHUBBUB_ARB_MIN_REQ_OUTSTAND, mask_sh), \
+	HUBBUB_SF(DCHUBBUB_ARB_DF_REQ_OUTSTAND, DCHUBBUB_ARB_MAX_REQ_OUTSTAND, mask_sh), \
 	HUBBUB_SF(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, mask_sh), \
 	HUBBUB_SF(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B, DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B, mask_sh), \
 	HUBBUB_SF(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C, DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C, mask_sh), \
@@ -161,7 +167,14 @@
 	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_TABLE_LEVEL, mask_sh), \
 	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_PIPE, mask_sh), \
 	HUBBUB_SF(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_INTERRUPT_STATUS, mask_sh),\
-	HUBBUB_SF(SDPIF_REQUEST_RATE_LIMIT, SDPIF_REQUEST_RATE_LIMIT, mask_sh)
+	HUBBUB_SF(SDPIF_REQUEST_RATE_LIMIT, SDPIF_REQUEST_RATE_LIMIT, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_CLOCK_CNTL, DISPCLK_R_DCHUBBUB_GATE_DIS, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_CLOCK_CNTL, DCFCLK_R_DCHUBBUB_GATE_DIS, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_SDPIF_CFG0, SDPIF_PORT_CONTROL, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_SDPIF_CFG1, SDPIF_MAX_NUM_OUTSTANDING, mask_sh),\
+	HUBBUB_SF(DCHUBBUB_MEM_PWR_MODE_CTRL, DET_MEM_PWR_LS_MODE, mask_sh)
+
+
 
 bool hubbub32_program_urgent_watermarks(
 		struct hubbub *hubbub,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c
index ac1c6458dd55..fe0cd177744c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c
@@ -155,7 +155,11 @@ void hubp32_cursor_set_attributes(
 	else
 		REG_UPDATE(DCHUBP_MALL_CONFIG, USE_MALL_FOR_CURSOR, false);
 }
-
+void hubp32_init(struct hubp *hubp)
+{
+	struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
+	REG_WRITE(HUBPREQ_DEBUG_DB, 1 << 8);
+}
 static struct hubp_funcs dcn32_hubp_funcs = {
 	.hubp_enable_tripleBuffer = hubp2_enable_triplebuffer,
 	.hubp_is_triplebuffer_enabled = hubp2_is_triplebuffer_enabled,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
index 5b0265c0df61..beb26dc8a07f 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
@@ -187,6 +187,7 @@ struct hubbub_funcs {
 	void (*init_crb)(struct hubbub *hubbub);
 	void (*force_usr_retraining_allow)(struct hubbub *hubbub, bool allow);
 	void (*set_request_limit)(struct hubbub *hubbub, int memory_channel_count, int words_per_channel);
+	void (*dchubbub_init)(struct hubbub *hubbub);
 };
 
 struct hubbub {
-- 
2.39.0

[PATCH 12/37] drm/amd/display: Optimize subvp and drr validation

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

Two issues existed:
1) Configs that support DRR, but have it disabled will fail subvp+vblank
validation incorrectly. Use subvp+vblank path for this case.
2) Configs that support DRR and have it enabled can use higher voltage level
than required if they also support subvp+vblank. Use lowest supported voltage
level for this case.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  | 42 ++++++++++++-------
 1 file changed, 26 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 025139a22e84..0c7ddd6f05b5 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -977,13 +977,12 @@ static bool subvp_vblank_schedulable(struct dc *dc, struct dc_state *context)
 		if (!subvp_pipe && pipe->stream->mall_stream_config.type == SUBVP_MAIN)
 			subvp_pipe = pipe;
 	}
-	// Use ignore_msa_timing_param flag to identify as DRR
-	if (found && context->res_ctx.pipe_ctx[vblank_index].stream->ignore_msa_timing_param) {
-		// SUBVP + DRR case -- don't enable SubVP + DRR for HDMI VRR cases
-		if (context->res_ctx.pipe_ctx[vblank_index].stream->allow_freesync)
-			schedulable = subvp_drr_schedulable(dc, context, &context->res_ctx.pipe_ctx[vblank_index]);
-		else
-			schedulable = false;
+	// Use ignore_msa_timing_param and VRR active, or Freesync flag to identify as DRR On
+	if (found && context->res_ctx.pipe_ctx[vblank_index].stream->ignore_msa_timing_param &&
+			(context->res_ctx.pipe_ctx[vblank_index].stream->allow_freesync ||
+			context->res_ctx.pipe_ctx[vblank_index].stream->vrr_active_variable)) {
+		// SUBVP + DRR case -- only allowed if run through DRR validation path
+		schedulable = false;
 	} else if (found) {
 		main_timing = &subvp_pipe->stream->timing;
 		phantom_timing = &subvp_pipe->stream->mall_stream_config.paired_stream->timing;
@@ -1087,12 +1086,12 @@ static void dcn32_full_validate_bw_helper(struct dc *dc,
 {
 	struct vba_vars_st *vba = &context->bw_ctx.dml.vba;
 	unsigned int dc_pipe_idx = 0;
+	int i = 0;
 	bool found_supported_config = false;
 	struct pipe_ctx *pipe = NULL;
 	uint32_t non_subvp_pipes = 0;
 	bool drr_pipe_found = false;
 	uint32_t drr_pipe_index = 0;
-	uint32_t i = 0;
 
 	dc_assert_fp_enabled();
 
@@ -1186,11 +1185,11 @@ static void dcn32_full_validate_bw_helper(struct dc *dc,
 			    vba->DRAMClockChangeSupport[*vlevel][vba->maxMpcComb] != dm_dram_clock_change_unsupported
 			    && subvp_validate_static_schedulability(dc, context, *vlevel)) {
 				found_supported_config = true;
-			} else if (*vlevel < context->bw_ctx.dml.soc.num_states &&
-					vba->DRAMClockChangeSupport[*vlevel][vba->maxMpcComb] == dm_dram_clock_change_unsupported) {
-				/* Case where 1 SubVP is added, and DML reports MCLK unsupported. This handles
-				 * the case for SubVP + DRR, where the DRR display does not support MCLK switch
-				 * at it's native refresh rate / timing.
+			} else if (*vlevel < context->bw_ctx.dml.soc.num_states) {
+				/* Case where 1 SubVP is added, and DML reports MCLK unsupported or DRR is allowed.
+				 * This handles the case for SubVP + DRR, where the DRR display does not support MCLK
+				 * switch at it's native refresh rate / timing, or DRR is allowed for the non-subvp
+				 * display.
 				 */
 				for (i = 0; i < dc->res_pool->pipe_count; i++) {
 					pipe = &context->res_ctx.pipe_ctx[i];
@@ -1207,6 +1206,15 @@ static void dcn32_full_validate_bw_helper(struct dc *dc,
 				// If there is only 1 remaining non SubVP pipe that is DRR, check static
 				// schedulability for SubVP + DRR.
 				if (non_subvp_pipes == 1 && drr_pipe_found) {
+					/* find lowest vlevel that supports the config */
+					for (i = *vlevel; i >= 0; i--) {
+						if (vba->ModeSupport[i][vba->maxMpcComb]) {
+							*vlevel = i;
+						} else {
+							break;
+						}
+					}
+
 					found_supported_config = subvp_drr_schedulable(dc, context,
 										       &context->res_ctx.pipe_ctx[drr_pipe_index]);
 				}
@@ -1849,7 +1857,7 @@ void dcn32_calculate_wm_and_dlg_fpu(struct dc *dc, struct dc_state *context,
 	bool subvp_in_use = dcn32_subvp_in_use(dc, context);
 	unsigned int min_dram_speed_mts_margin;
 	bool need_fclk_lat_as_dummy = false;
-	bool is_subvp_p_drr = true;
+	bool is_subvp_p_drr = false;
 
 	dc_assert_fp_enabled();
 
@@ -1857,7 +1865,8 @@ void dcn32_calculate_wm_and_dlg_fpu(struct dc *dc, struct dc_state *context,
 	if (subvp_in_use) {
 		/* Override DRAMClockChangeSupport for SubVP + DRR case where the DRR cannot switch without stretching it's VBLANK */
 		if (!pstate_en) {
-			context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][context->bw_ctx.dml.vba.maxMpcComb] = dm_dram_clock_change_vblank_w_mall_sub_vp;
+			context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][maxMpcComb] = dm_dram_clock_change_vblank_w_mall_sub_vp;
+			context->bw_ctx.dml.soc.allow_for_pstate_or_stutter_in_vblank_final = dm_prefetch_support_fclk_and_stutter;
 			pstate_en = true;
 			is_subvp_p_drr = true;
 		}
@@ -1875,8 +1884,9 @@ void dcn32_calculate_wm_and_dlg_fpu(struct dc *dc, struct dc_state *context,
 		context->bw_ctx.dml.soc.dram_clock_change_latency_us =
 							dc->clk_mgr->bw_params->wm_table.nv_entries[WM_A].dml_input.pstate_latency_us;
 		dcn32_internal_validate_bw(dc, context, pipes, &pipe_cnt, &vlevel, false);
+		maxMpcComb = context->bw_ctx.dml.vba.maxMpcComb;
 		if (is_subvp_p_drr) {
-			context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][context->bw_ctx.dml.vba.maxMpcComb] = dm_dram_clock_change_vblank_w_mall_sub_vp;
+			context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][maxMpcComb] = dm_dram_clock_change_vblank_w_mall_sub_vp;
 		}
 	}
 
-- 
2.39.0

[PATCH 13/37] drm/amd/display: Account for DCC Meta pitch in DML MALL surface calculations

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

DML incorrectly uses surface width for determining DCC meta size in MALL
allocation calculations.  Meta pitch should be used instead.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c |  4 ++++
 .../display/dc/dml/dcn32/display_mode_vba_util_32.c    | 10 ++++++----
 .../display/dc/dml/dcn32/display_mode_vba_util_32.h    |  2 ++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index 4b8f5fa0f0ad..83765008dd5f 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -411,6 +411,8 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
 				v->BlockWidthC,
 				v->BlockHeightY,
 				v->BlockHeightC,
+				mode_lib->vba.DCCMetaPitchY,
+				mode_lib->vba.DCCMetaPitchC,
 
 				/* Output */
 				v->SurfaceSizeInMALL,
@@ -2650,6 +2652,8 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 			mode_lib->vba.MacroTileWidthC,
 			mode_lib->vba.MacroTileHeightY,
 			mode_lib->vba.MacroTileHeightC,
+			mode_lib->vba.DCCMetaPitchY,
+			mode_lib->vba.DCCMetaPitchC,
 
 			/* Output */
 			mode_lib->vba.SurfaceSizeInMALL,
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
index b53feeaf5cf1..4279cd481de1 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
@@ -1796,6 +1796,8 @@ void dml32_CalculateSurfaceSizeInMall(
 		unsigned int ReadBlockWidthC[],
 		unsigned int ReadBlockHeightY[],
 		unsigned int ReadBlockHeightC[],
+		unsigned int DCCMetaPitchY[],
+		unsigned int DCCMetaPitchC[],
 
 		/* Output */
 		unsigned int    SurfaceSizeInMALL[],
@@ -1828,7 +1830,7 @@ void dml32_CalculateSurfaceSizeInMall(
 			}
 			if (DCCEnable[k] == true) {
 				SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-						dml_min(dml_ceil(SurfaceWidthY[k], 8 * Read256BytesBlockWidthY[k]),
+						dml_min(dml_ceil(DCCMetaPitchY[k], 8 * Read256BytesBlockWidthY[k]),
 							dml_floor(ViewportXStartY[k] + ViewportWidthY[k] + 8 *
 							Read256BytesBlockWidthY[k] - 1, 8 * Read256BytesBlockWidthY[k])
 							- dml_floor(ViewportXStartY[k], 8 * Read256BytesBlockWidthY[k]))
@@ -1839,7 +1841,7 @@ void dml32_CalculateSurfaceSizeInMall(
 							* Read256BytesBlockHeightY[k])) * BytesPerPixelY[k] / 256;
 				if (Read256BytesBlockWidthC[k] > 0) {
 					SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-							dml_min(dml_ceil(SurfaceWidthC[k], 8 *
+							dml_min(dml_ceil(DCCMetaPitchC[k], 8 *
 								Read256BytesBlockWidthC[k]),
 								dml_floor(ViewportXStartC[k] + ViewportWidthC[k] + 8
 								* Read256BytesBlockWidthC[k] - 1, 8 *
@@ -1872,7 +1874,7 @@ void dml32_CalculateSurfaceSizeInMall(
 			}
 			if (DCCEnable[k] == true) {
 				SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-						dml_ceil(dml_min(SurfaceWidthY[k], ViewportWidthY[k] + 8 *
+						dml_ceil(dml_min(DCCMetaPitchY[k], ViewportWidthY[k] + 8 *
 								Read256BytesBlockWidthY[k] - 1), 8 *
 								Read256BytesBlockWidthY[k]) *
 						dml_ceil(dml_min(SurfaceHeightY[k], ViewportHeightY[k] + 8 *
@@ -1881,7 +1883,7 @@ void dml32_CalculateSurfaceSizeInMall(
 
 				if (Read256BytesBlockWidthC[k] > 0) {
 					SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-							dml_ceil(dml_min(SurfaceWidthC[k], ViewportWidthC[k] + 8 *
+							dml_ceil(dml_min(DCCMetaPitchC[k], ViewportWidthC[k] + 8 *
 									Read256BytesBlockWidthC[k] - 1), 8 *
 									Read256BytesBlockWidthC[k]) *
 							dml_ceil(dml_min(SurfaceHeightC[k], ViewportHeightC[k] + 8 *
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
index 779c6805f599..83edfcee8851 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
@@ -358,6 +358,8 @@ void dml32_CalculateSurfaceSizeInMall(
 		unsigned int ReadBlockWidthC[],
 		unsigned int ReadBlockHeightY[],
 		unsigned int ReadBlockHeightC[],
+		unsigned int DCCMetaPitchY[],
+		unsigned int DCCMetaPitchC[],
 
 		/* Output */
 		unsigned int    SurfaceSizeInMALL[],
-- 
2.39.0

[PATCH 14/37] drm/amd/display: Account for Subvp Phantoms in DML MALL surface calculations

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

DML does not explicitly consider support for space in MALL required for
subvp phantom pipes. This adds a check to make sure portion of phantom
surface can fit in MALL.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../display/dc/dml/dcn32/display_mode_vba_32.c    |  2 ++
 .../dc/dml/dcn32/display_mode_vba_util_32.c       | 15 +++++++++++----
 .../dc/dml/dcn32/display_mode_vba_util_32.h       |  1 +
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index 83765008dd5f..6c5ab5c26b38 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -387,6 +387,7 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
 				mode_lib->vba.NumberOfActiveSurfaces,
 				mode_lib->vba.MALLAllocatedForDCNFinal,
 				mode_lib->vba.UseMALLForStaticScreen,
+				mode_lib->vba.UsesMALLForPStateChange,
 				mode_lib->vba.DCCEnable,
 				mode_lib->vba.ViewportStationary,
 				mode_lib->vba.ViewportXStartY,
@@ -2628,6 +2629,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 			mode_lib->vba.NumberOfActiveSurfaces,
 			mode_lib->vba.MALLAllocatedForDCNFinal,
 			mode_lib->vba.UseMALLForStaticScreen,
+			mode_lib->vba.UsesMALLForPStateChange,
 			mode_lib->vba.DCCEnable,
 			mode_lib->vba.ViewportStationary,
 			mode_lib->vba.ViewportXStartY,
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
index 4279cd481de1..ba23b199afa6 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
@@ -1772,6 +1772,7 @@ void dml32_CalculateSurfaceSizeInMall(
 		unsigned int NumberOfActiveSurfaces,
 		unsigned int MALLAllocatedForDCN,
 		enum dm_use_mall_for_static_screen_mode UseMALLForStaticScreen[],
+		enum dm_use_mall_for_pstate_change_mode UsesMALLForPStateChange[],
 		bool DCCEnable[],
 		bool ViewportStationary[],
 		unsigned int ViewportXStartY[],
@@ -1803,8 +1804,10 @@ void dml32_CalculateSurfaceSizeInMall(
 		unsigned int    SurfaceSizeInMALL[],
 		bool *ExceededMALLSize)
 {
-	unsigned int TotalSurfaceSizeInMALL  = 0;
 	unsigned int k;
+	unsigned int TotalSurfaceSizeInMALLForSS = 0;
+	unsigned int TotalSurfaceSizeInMALLForSubVP = 0;
+	unsigned int MALLAllocatedForDCNInBytes = MALLAllocatedForDCN * 1024 * 1024;
 
 	for (k = 0; k < NumberOfActiveSurfaces; ++k) {
 		if (ViewportStationary[k]) {
@@ -1896,10 +1899,14 @@ void dml32_CalculateSurfaceSizeInMall(
 	}
 
 	for (k = 0; k < NumberOfActiveSurfaces; ++k) {
-		if (UseMALLForStaticScreen[k] == dm_use_mall_static_screen_enable)
-			TotalSurfaceSizeInMALL = TotalSurfaceSizeInMALL + SurfaceSizeInMALL[k];
+		/* SS and Subvp counted separate as they are never used at the same time */
+		if (UsesMALLForPStateChange[k] == dm_use_mall_pstate_change_phantom_pipe)
+			TotalSurfaceSizeInMALLForSubVP = TotalSurfaceSizeInMALLForSubVP + SurfaceSizeInMALL[k];
+		else if (UseMALLForStaticScreen[k] == dm_use_mall_static_screen_enable)
+			TotalSurfaceSizeInMALLForSS = TotalSurfaceSizeInMALLForSS + SurfaceSizeInMALL[k];
 	}
-	*ExceededMALLSize =  (TotalSurfaceSizeInMALL > MALLAllocatedForDCN * 1024 * 1024);
+	*ExceededMALLSize =  (TotalSurfaceSizeInMALLForSS > MALLAllocatedForDCNInBytes) ||
+							(TotalSurfaceSizeInMALLForSubVP > MALLAllocatedForDCNInBytes);
 } // CalculateSurfaceSizeInMall
 
 void dml32_CalculateVMRowAndSwath(
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
index 83edfcee8851..5c7196d1ddef 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
@@ -334,6 +334,7 @@ void dml32_CalculateSurfaceSizeInMall(
 		unsigned int NumberOfActiveSurfaces,
 		unsigned int MALLAllocatedForDCN,
 		enum dm_use_mall_for_static_screen_mode UseMALLForStaticScreen[],
+		enum dm_use_mall_for_pstate_change_mode UsesMALLForPStateChange[],
 		bool DCCEnable[],
 		bool ViewportStationary[],
 		unsigned int ViewportXStartY[],
-- 
2.39.0

[PATCH 15/37] drm/amd/display: Use DML for MALL SS and Subvp allocation calculations

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

MALL SS and Subvp use the same calculations for determining the size of
the required allocation for a given surface, which is already done in
DML. Add an interface to extract this information from VBA variables and
use in their respective helper functions. Also refactor existing code to
remove stale workarounds.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../drm/amd/display/dc/dcn32/dcn32_hwseq.c    | 146 ++-------------
 .../drm/amd/display/dc/dcn32/dcn32_resource.h |  13 +-
 .../display/dc/dcn32/dcn32_resource_helpers.c | 175 ++++++++----------
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  |  29 ++-
 .../drm/amd/display/dc/dml/display_mode_vba.c |   1 +
 .../drm/amd/display/dc/dml/display_mode_vba.h |   1 +
 .../gpu/drm/amd/display/dc/inc/core_types.h   |   6 +-
 7 files changed, 134 insertions(+), 237 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
index f2cffb96ebf1..07362c66f023 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
@@ -207,151 +207,31 @@ static bool dcn32_check_no_memory_request_for_cab(struct dc *dc)
  */
 static uint32_t dcn32_calculate_cab_allocation(struct dc *dc, struct dc_state *ctx)
 {
-	int i, j;
-	struct dc_stream_state *stream = NULL;
-	struct dc_plane_state *plane = NULL;
-	uint32_t cursor_size = 0;
-	uint32_t total_lines = 0;
-	uint32_t lines_per_way = 0;
+	int i;
 	uint8_t num_ways = 0;
-	uint8_t bytes_per_pixel = 0;
-	uint8_t cursor_bpp = 0;
-	uint16_t mblk_width = 0;
-	uint16_t mblk_height = 0;
-	uint16_t mall_alloc_width_blk_aligned = 0;
-	uint16_t mall_alloc_height_blk_aligned = 0;
-	uint16_t num_mblks = 0;
-	uint32_t bytes_in_mall = 0;
-	uint32_t cache_lines_used = 0;
-	uint32_t cache_lines_per_plane = 0;
-
-	for (i = 0; i < dc->res_pool->pipe_count; i++) {
-		struct pipe_ctx *pipe = &dc->current_state->res_ctx.pipe_ctx[i];
-
-		/* If PSR is supported on an eDP panel that's connected, but that panel is
-		 * not in PSR at the time of trying to enter MALL SS, we have to include it
-		 * in the static screen CAB calculation
-		 */
-		if (!pipe->stream || !pipe->plane_state ||
-				(pipe->stream->link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED &&
-				pipe->stream->link->psr_settings.psr_allow_active) ||
-				pipe->stream->mall_stream_config.type == SUBVP_PHANTOM)
-			continue;
-
-		bytes_per_pixel = pipe->plane_state->format >= SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 ? 8 : 4;
-		mblk_width = DCN3_2_MBLK_WIDTH;
-		mblk_height = bytes_per_pixel == 4 ? DCN3_2_MBLK_HEIGHT_4BPE : DCN3_2_MBLK_HEIGHT_8BPE;
-
-		/* full_vp_width_blk_aligned = FLOOR(vp_x_start + full_vp_width + blk_width - 1, blk_width) -
-		 * FLOOR(vp_x_start, blk_width)
-		 *
-		 * mall_alloc_width_blk_aligned_l/c = full_vp_width_blk_aligned_l/c
-		 */
-		mall_alloc_width_blk_aligned = ((pipe->plane_res.scl_data.viewport.x +
-				pipe->plane_res.scl_data.viewport.width + mblk_width - 1) / mblk_width * mblk_width) -
-						(pipe->plane_res.scl_data.viewport.x / mblk_width * mblk_width);
-
-		/* full_vp_height_blk_aligned = FLOOR(vp_y_start + full_vp_height + blk_height - 1, blk_height) -
-		 * FLOOR(vp_y_start, blk_height)
-		 *
-		 * mall_alloc_height_blk_aligned_l/c = full_vp_height_blk_aligned_l/c
-		 */
-		mall_alloc_height_blk_aligned = ((pipe->plane_res.scl_data.viewport.y +
-				pipe->plane_res.scl_data.viewport.height + mblk_height - 1) / mblk_height * mblk_height) -
-						(pipe->plane_res.scl_data.viewport.y / mblk_height * mblk_height);
-
-		num_mblks = ((mall_alloc_width_blk_aligned + mblk_width - 1) / mblk_width) *
-				((mall_alloc_height_blk_aligned + mblk_height - 1) / mblk_height);
-
-		/*For DCC:
-		 * meta_num_mblk = CEILING(meta_pitch*full_vp_height*Bpe/256/mblk_bytes, 1)
-		 */
-		if (pipe->plane_state->dcc.enable)
-			num_mblks += (pipe->plane_state->dcc.meta_pitch * pipe->plane_res.scl_data.viewport.height * bytes_per_pixel +
-					(256 * DCN3_2_MALL_MBLK_SIZE_BYTES) - 1) / (256 * DCN3_2_MALL_MBLK_SIZE_BYTES);
+	uint32_t mall_ss_size_bytes = 0;
 
-		bytes_in_mall = num_mblks * DCN3_2_MALL_MBLK_SIZE_BYTES;
-
-		/* (cache lines used is total bytes / cache_line size. Add +2 for worst case alignment
-		 * (MALL is 64-byte aligned)
-		 */
-		cache_lines_per_plane = bytes_in_mall / dc->caps.cache_line_size + 2;
-		cache_lines_used += cache_lines_per_plane;
-	}
+	mall_ss_size_bytes = ctx->bw_ctx.bw.dcn.mall_ss_size_bytes;
+	// TODO add additional logic for PSR active stream exclusion optimization
+	// mall_ss_psr_active_size_bytes = ctx->bw_ctx.bw.dcn.mall_ss_psr_active_size_bytes;
 
 	// Include cursor size for CAB allocation
-	for (j = 0; j < dc->res_pool->pipe_count; j++) {
-		struct pipe_ctx *pipe = &ctx->res_ctx.pipe_ctx[j];
-		struct hubp *hubp = pipe->plane_res.hubp;
-
-		if (pipe->stream && pipe->plane_state && hubp)
-			/* Find the cursor plane and use the exact size instead of
-			using the max for calculation */
-
-		if (hubp->curs_attr.width > 0) {
-				cursor_size = hubp->curs_attr.pitch * hubp->curs_attr.height;
-
-				switch (pipe->stream->cursor_attributes.color_format) {
-				case CURSOR_MODE_MONO:
-					cursor_size /= 2;
-					cursor_bpp = 4;
-					break;
-				case CURSOR_MODE_COLOR_1BIT_AND:
-				case CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA:
-				case CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA:
-					cursor_size *= 4;
-					cursor_bpp = 4;
-					break;
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		struct pipe_ctx *pipe = &ctx->res_ctx.pipe_ctx[i];
 
-				case CURSOR_MODE_COLOR_64BIT_FP_PRE_MULTIPLIED:
-				case CURSOR_MODE_COLOR_64BIT_FP_UN_PRE_MULTIPLIED:
-					cursor_size *= 8;
-					cursor_bpp = 8;
-					break;
-				}
+		if (!pipe->stream || !pipe->plane_state)
+			continue;
 
-				if (pipe->stream->cursor_position.enable && !dc->debug.alloc_extra_way_for_cursor &&
-						cursor_size > 16384) {
-					/* cursor_num_mblk = CEILING(num_cursors*cursor_width*cursor_width*cursor_Bpe/mblk_bytes, 1)
-					 */
-					cache_lines_used += (((cursor_size + DCN3_2_MALL_MBLK_SIZE_BYTES - 1) /
-							DCN3_2_MALL_MBLK_SIZE_BYTES) * DCN3_2_MALL_MBLK_SIZE_BYTES) /
-							dc->caps.cache_line_size + 2;
-					break;
-				}
-			}
+		mall_ss_size_bytes += dcn32_helper_calculate_mall_bytes_for_cursor(dc, pipe, false);
 	}
 
 	// Convert number of cache lines required to number of ways
-	total_lines = dc->caps.max_cab_allocation_bytes / dc->caps.cache_line_size;
-	lines_per_way = total_lines / dc->caps.cache_num_ways;
-	num_ways = cache_lines_used / lines_per_way;
-
-	if (cache_lines_used % lines_per_way > 0)
-		num_ways++;
-
-	for (i = 0; i < ctx->stream_count; i++) {
-		stream = ctx->streams[i];
-		for (j = 0; j < ctx->stream_status[i].plane_count; j++) {
-			plane = ctx->stream_status[i].plane_states[j];
-
-			if (stream->cursor_position.enable && plane &&
-					dc->debug.alloc_extra_way_for_cursor &&
-					cursor_size > 16384) {
-				/* Cursor caching is not supported since it won't be on the same line.
-				 * So we need an extra line to accommodate it. With large cursors and a single 4k monitor
-				 * this case triggers corruption. If we're at the edge, then dont trigger display refresh
-				 * from MALL. We only need to cache cursor if its greater that 64x64 at 4 bpp.
-				 */
-				num_ways++;
-				/* We only expect one cursor plane */
-				break;
-			}
-		}
-	}
 	if (dc->debug.force_mall_ss_num_ways > 0) {
 		num_ways = dc->debug.force_mall_ss_num_ways;
+	} else {
+		num_ways = dcn32_helper_mall_bytes_to_ways(dc, mall_ss_size_bytes);
 	}
+
 	return num_ways;
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
index 57ce1d670abe..40cda0f4c12c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
@@ -96,8 +96,17 @@ void dcn32_calculate_wm_and_dlg(
 		int pipe_cnt,
 		int vlevel);
 
-uint32_t dcn32_helper_calculate_num_ways_for_subvp
-		(struct dc *dc,
+uint32_t dcn32_helper_mall_bytes_to_ways(
+		struct dc *dc,
+		uint32_t total_size_in_mall_bytes);
+
+uint32_t dcn32_helper_calculate_mall_bytes_for_cursor(
+		struct dc *dc,
+		struct pipe_ctx *pipe_ctx,
+		bool ignore_cursor_buf);
+
+uint32_t dcn32_helper_calculate_num_ways_for_subvp(
+		struct dc *dc,
 		struct dc_state *context);
 
 void dcn32_merge_pipes_for_subvp(struct dc *dc,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
index e5287e5f66d5..50f20549c951 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
@@ -33,13 +33,75 @@ static bool is_dual_plane(enum surface_pixel_format format)
 	return format >= SURFACE_PIXEL_FORMAT_VIDEO_BEGIN || format == SURFACE_PIXEL_FORMAT_GRPH_RGBE_ALPHA;
 }
 
+
+uint32_t dcn32_helper_mall_bytes_to_ways(
+		struct dc *dc,
+		uint32_t total_size_in_mall_bytes)
+{
+	uint32_t cache_lines_used, lines_per_way, total_cache_lines, num_ways;
+
+	/* add 2 lines for worst case alignment */
+	cache_lines_used = total_size_in_mall_bytes / dc->caps.cache_line_size + 2;
+
+	total_cache_lines = dc->caps.max_cab_allocation_bytes / dc->caps.cache_line_size;
+	lines_per_way = total_cache_lines / dc->caps.cache_num_ways;
+	num_ways = cache_lines_used / lines_per_way;
+	if (cache_lines_used % lines_per_way > 0)
+		num_ways++;
+
+	return num_ways;
+}
+
+uint32_t dcn32_helper_calculate_mall_bytes_for_cursor(
+		struct dc *dc,
+		struct pipe_ctx *pipe_ctx,
+		bool ignore_cursor_buf)
+{
+	struct hubp *hubp = pipe_ctx->plane_res.hubp;
+	uint32_t cursor_size = hubp->curs_attr.pitch * hubp->curs_attr.height;
+	uint32_t cursor_bpp = 4;
+	uint32_t cursor_mall_size_bytes = 0;
+
+	switch (pipe_ctx->stream->cursor_attributes.color_format) {
+	case CURSOR_MODE_MONO:
+		cursor_size /= 2;
+		cursor_bpp = 4;
+		break;
+	case CURSOR_MODE_COLOR_1BIT_AND:
+	case CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA:
+	case CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA:
+		cursor_size *= 4;
+		cursor_bpp = 4;
+		break;
+
+	case CURSOR_MODE_COLOR_64BIT_FP_PRE_MULTIPLIED:
+	case CURSOR_MODE_COLOR_64BIT_FP_UN_PRE_MULTIPLIED:
+		cursor_size *= 8;
+		cursor_bpp = 8;
+		break;
+	}
+
+	/* only count if cursor is enabled, and if additional allocation needed outside of the
+	 * DCN cursor buffer
+	 */
+	if (pipe_ctx->stream->cursor_position.enable && (ignore_cursor_buf ||
+			cursor_size > 16384)) {
+		/* cursor_num_mblk = CEILING(num_cursors*cursor_width*cursor_width*cursor_Bpe/mblk_bytes, 1)
+		 * Note: add 1 mblk in case of cursor misalignment
+		 */
+		cursor_mall_size_bytes = ((cursor_size + DCN3_2_MALL_MBLK_SIZE_BYTES - 1) /
+				DCN3_2_MALL_MBLK_SIZE_BYTES + 1) * DCN3_2_MALL_MBLK_SIZE_BYTES;
+	}
+
+	return cursor_mall_size_bytes;
+}
+
 /**
  * ********************************************************************************************
  * dcn32_helper_calculate_num_ways_for_subvp: Calculate number of ways needed for SubVP
  *
- * This function first checks the bytes required per pixel on the SubVP pipe, then calculates
- * the total number of pixels required in the SubVP MALL region. These are used to calculate
- * the number of cache lines used (then number of ways required) for SubVP MCLK switching.
+ * Gets total allocation required for the phantom viewport calculated by DML in bytes and
+ * converts to number of cache ways.
  *
  * @param [in] dc: current dc state
  * @param [in] context: new dc state
@@ -48,106 +110,19 @@ static bool is_dual_plane(enum surface_pixel_format format)
  *
  * ********************************************************************************************
  */
-uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_state *context)
+uint32_t dcn32_helper_calculate_num_ways_for_subvp(
+		struct dc *dc,
+		struct dc_state *context)
 {
-	uint32_t num_ways = 0;
-	uint32_t bytes_per_pixel = 0;
-	uint32_t cache_lines_used = 0;
-	uint32_t lines_per_way = 0;
-	uint32_t total_cache_lines = 0;
-	uint32_t bytes_in_mall = 0;
-	uint32_t num_mblks = 0;
-	uint32_t cache_lines_per_plane = 0;
-	uint32_t i = 0, j = 0;
-	uint16_t mblk_width = 0;
-	uint16_t mblk_height = 0;
-	uint32_t full_vp_width_blk_aligned = 0;
-	uint32_t full_vp_height_blk_aligned = 0;
-	uint32_t mall_alloc_width_blk_aligned = 0;
-	uint32_t mall_alloc_height_blk_aligned = 0;
-	uint16_t full_vp_height = 0;
-	bool subvp_in_use = false;
-
-	for (i = 0; i < dc->res_pool->pipe_count; i++) {
-		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
-
-		/* Find the phantom pipes.
-		 * - For pipe split case we need to loop through the bottom and next ODM
-		 *   pipes or only half the viewport size is counted
-		 */
-		if (pipe->stream && pipe->plane_state &&
-				pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
-			struct pipe_ctx *main_pipe = NULL;
-
-			subvp_in_use = true;
-			/* Get full viewport height from main pipe (required for MBLK calculation) */
-			for (j = 0; j < dc->res_pool->pipe_count; j++) {
-				main_pipe = &context->res_ctx.pipe_ctx[j];
-				if (main_pipe->stream == pipe->stream->mall_stream_config.paired_stream) {
-					full_vp_height = main_pipe->plane_res.scl_data.viewport.height;
-					break;
-				}
-			}
-
-			bytes_per_pixel = pipe->plane_state->format >= SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 ? 8 : 4;
-			mblk_width = DCN3_2_MBLK_WIDTH;
-			mblk_height = bytes_per_pixel == 4 ? DCN3_2_MBLK_HEIGHT_4BPE : DCN3_2_MBLK_HEIGHT_8BPE;
-
-			/* full_vp_width_blk_aligned = FLOOR(vp_x_start + full_vp_width + blk_width - 1, blk_width) -
-			 * FLOOR(vp_x_start, blk_width)
-			 */
-			full_vp_width_blk_aligned = ((pipe->plane_res.scl_data.viewport.x +
-					pipe->plane_res.scl_data.viewport.width + mblk_width - 1) / mblk_width * mblk_width) -
-					(pipe->plane_res.scl_data.viewport.x / mblk_width * mblk_width);
-
-			/* full_vp_height_blk_aligned = FLOOR(vp_y_start + full_vp_height + blk_height - 1, blk_height) -
-			 * FLOOR(vp_y_start, blk_height)
-			 */
-			full_vp_height_blk_aligned = ((pipe->plane_res.scl_data.viewport.y +
-					full_vp_height + mblk_height - 1) / mblk_height * mblk_height) -
-					(pipe->plane_res.scl_data.viewport.y / mblk_height * mblk_height);
-
-			/* mall_alloc_width_blk_aligned_l/c = full_vp_width_blk_aligned_l/c */
-			mall_alloc_width_blk_aligned = full_vp_width_blk_aligned;
-
-			/* mall_alloc_height_blk_aligned_l/c = CEILING(sub_vp_height_l/c - 1, blk_height_l/c) + blk_height_l/c */
-			mall_alloc_height_blk_aligned = (pipe->plane_res.scl_data.viewport.height - 1 + mblk_height - 1) /
-					mblk_height * mblk_height + mblk_height;
-
-			/* full_mblk_width_ub_l/c = mall_alloc_width_blk_aligned_l/c;
-			 * full_mblk_height_ub_l/c = mall_alloc_height_blk_aligned_l/c;
-			 * num_mblk_l/c = (full_mblk_width_ub_l/c / mblk_width_l/c) * (full_mblk_height_ub_l/c / mblk_height_l/c);
-			 * (Should be divisible, but round up if not)
-			 */
-			num_mblks = ((mall_alloc_width_blk_aligned + mblk_width - 1) / mblk_width) *
-					((mall_alloc_height_blk_aligned + mblk_height - 1) / mblk_height);
-
-			/*For DCC:
-			 * meta_num_mblk = CEILING(meta_pitch*full_vp_height*Bpe/256/mblk_bytes, 1)
-			 */
-			if (pipe->plane_state->dcc.enable)
-				num_mblks += (pipe->plane_state->dcc.meta_pitch * pipe->plane_res.scl_data.viewport.height * bytes_per_pixel +
-								(256 * DCN3_2_MALL_MBLK_SIZE_BYTES) - 1) / (256 * DCN3_2_MALL_MBLK_SIZE_BYTES);
-
-			bytes_in_mall = num_mblks * DCN3_2_MALL_MBLK_SIZE_BYTES;
-			// cache lines used is total bytes / cache_line size. Add +2 for worst case alignment
-			// (MALL is 64-byte aligned)
-			cache_lines_per_plane = bytes_in_mall / dc->caps.cache_line_size + 2;
-
-			cache_lines_used += cache_lines_per_plane;
+	if (context->bw_ctx.bw.dcn.mall_subvp_size_bytes > 0) {
+		if (dc->debug.force_subvp_num_ways) {
+			return dc->debug.force_subvp_num_ways;
+		} else {
+			return dcn32_helper_mall_bytes_to_ways(dc, context->bw_ctx.bw.dcn.mall_subvp_size_bytes);
 		}
+	} else {
+		return 0;
 	}
-
-	total_cache_lines = dc->caps.max_cab_allocation_bytes / dc->caps.cache_line_size;
-	lines_per_way = total_cache_lines / dc->caps.cache_num_ways;
-	num_ways = cache_lines_used / lines_per_way;
-	if (cache_lines_used % lines_per_way > 0)
-		num_ways++;
-
-	if (subvp_in_use && dc->debug.force_subvp_num_ways > 0)
-		num_ways = dc->debug.force_subvp_num_ways;
-
-	return num_ways;
 }
 
 void dcn32_merge_pipes_for_subvp(struct dc *dc,
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 0c7ddd6f05b5..f2597c966510 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -1291,7 +1291,6 @@ static void dcn32_calculate_dlg_params(struct dc *dc, struct dc_state *context,
 	context->bw_ctx.bw.dcn.clk.p_state_change_support =
 			context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][context->bw_ctx.dml.vba.maxMpcComb]
 					!= dm_dram_clock_change_unsupported;
-	context->bw_ctx.bw.dcn.clk.num_ways = dcn32_helper_calculate_num_ways_for_subvp(dc, context);
 
 	context->bw_ctx.bw.dcn.clk.dppclk_khz = 0;
 	context->bw_ctx.bw.dcn.clk.dtbclk_en = is_dtbclk_required(dc, context);
@@ -1315,6 +1314,10 @@ static void dcn32_calculate_dlg_params(struct dc *dc, struct dc_state *context,
 		unbounded_req_enabled = false;
 	}
 
+	context->bw_ctx.bw.dcn.mall_ss_size_bytes = 0;
+	context->bw_ctx.bw.dcn.mall_ss_psr_active_size_bytes = 0;
+	context->bw_ctx.bw.dcn.mall_subvp_size_bytes = 0;
+
 	for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
 		if (!context->res_ctx.pipe_ctx[i].stream)
 			continue;
@@ -1346,6 +1349,28 @@ static void dcn32_calculate_dlg_params(struct dc *dc, struct dc_state *context,
 		else
 			context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz = 0;
 		context->res_ctx.pipe_ctx[i].pipe_dlg_param = pipes[pipe_idx].pipe.dest;
+
+		context->res_ctx.pipe_ctx[i].surface_size_in_mall_bytes = get_surface_size_in_mall(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
+
+		/* MALL Allocation Sizes */
+		/* count from active, top pipes only */
+		if (context->res_ctx.pipe_ctx[i].stream && context->res_ctx.pipe_ctx[i].plane_state &&
+				context->res_ctx.pipe_ctx[i].top_pipe == NULL &&
+				context->res_ctx.pipe_ctx[i].prev_odm_pipe == NULL) {
+			/* SS: all active surfaces stored in MALL */
+			if (context->res_ctx.pipe_ctx[i].stream->mall_stream_config.type != SUBVP_PHANTOM) {
+				context->bw_ctx.bw.dcn.mall_ss_size_bytes += context->res_ctx.pipe_ctx[i].surface_size_in_mall_bytes;
+
+				if (context->res_ctx.pipe_ctx[i].stream->link->psr_settings.psr_version == DC_PSR_VERSION_UNSUPPORTED) {
+					/* SS PSR On: all active surfaces part of streams not supporting PSR stored in MALL */
+					context->bw_ctx.bw.dcn.mall_ss_psr_active_size_bytes += context->res_ctx.pipe_ctx[i].surface_size_in_mall_bytes;
+				}
+			} else if (context->res_ctx.pipe_ctx[i].stream->mall_stream_config.type == SUBVP_PHANTOM) {
+				/* SUBVP: phantom surfaces only stored in MALL */
+				context->bw_ctx.bw.dcn.mall_subvp_size_bytes += context->res_ctx.pipe_ctx[i].surface_size_in_mall_bytes;
+			}
+		}
+
 		pipe_idx++;
 	}
 	/* If DCN isn't making memory requests we can allow pstate change and lower clocks */
@@ -1366,6 +1391,8 @@ static void dcn32_calculate_dlg_params(struct dc *dc, struct dc_state *context,
 	context->bw_ctx.bw.dcn.clk.max_supported_dispclk_khz = context->bw_ctx.dml.soc.clock_limits[vlevel].dispclk_mhz
 			* 1000;
 
+	context->bw_ctx.bw.dcn.clk.num_ways = dcn32_helper_calculate_num_ways_for_subvp(dc, context);
+
 	context->bw_ctx.bw.dcn.compbuf_size_kb = context->bw_ctx.dml.ip.config_return_buffer_size_in_kbytes;
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
index 8e6585dab20e..8cb28b7918db 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
@@ -202,6 +202,7 @@ dml_get_pipe_attr_func(vm_group_size_in_bytes, mode_lib->vba.vm_group_bytes);
 dml_get_pipe_attr_func(dpte_row_height_linear_l, mode_lib->vba.dpte_row_height_linear);
 dml_get_pipe_attr_func(pte_buffer_mode, mode_lib->vba.PTE_BUFFER_MODE);
 dml_get_pipe_attr_func(subviewport_lines_needed_in_mall, mode_lib->vba.SubViewportLinesNeededInMALL);
+dml_get_pipe_attr_func(surface_size_in_mall, mode_lib->vba.SurfaceSizeInMALL)
 
 double get_total_immediate_flip_bytes(
 		struct display_mode_lib *mode_lib,
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
index 81e53e67cd0b..876b9b517ea2 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
@@ -143,6 +143,7 @@ dml_get_pipe_attr_decl(vready_at_or_after_vsync);
 dml_get_pipe_attr_decl(min_dst_y_next_start);
 dml_get_pipe_attr_decl(vstartup_calculated);
 dml_get_pipe_attr_decl(subviewport_lines_needed_in_mall);
+dml_get_pipe_attr_decl(surface_size_in_mall);
 
 double get_total_immediate_flip_bytes(
 		struct display_mode_lib *mode_lib,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
index b093ea495468..bebfcf8737b3 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
@@ -450,10 +450,11 @@ struct pipe_ctx {
 	struct _vcs_dpi_display_e2e_pipe_params_st dml_input;
 	int det_buffer_size_kb;
 	bool unbounded_req;
+	unsigned int surface_size_in_mall_bytes;
 
-	union pipe_update_flags update_flags;
 	struct dwbc *dwbc;
 	struct mcif_wb *mcif_wb;
+	union pipe_update_flags update_flags;
 };
 
 /* Data used for dynamic link encoder assignment.
@@ -507,6 +508,9 @@ struct dcn_bw_output {
 	struct dcn_watermark_set watermarks;
 	struct dcn_bw_writeback bw_writeback;
 	int compbuf_size_kb;
+	unsigned int mall_ss_size_bytes;
+	unsigned int mall_ss_psr_active_size_bytes;
+	unsigned int mall_subvp_size_bytes;
 	unsigned int legacy_svp_drr_stream_index;
 	bool legacy_svp_drr_stream_index_valid;
 };
-- 
2.39.0

[PATCH 16/37] drm/amd/display: cleanup function args in dml

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

Remove array size on array passed to CalculateDETSwathFillLatencyHiding.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c | 2 +-
 .../gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
index ba23b199afa6..a089be99b2d0 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
@@ -6254,7 +6254,7 @@ bool dml32_CalculateDETSwathFillLatencyHiding(unsigned int NumberOfActiveSurface
 		double	PixelClock[],
 		double	VRatioY[],
 		double	VRatioC[],
-		enum dm_use_mall_for_pstate_change_mode UsesMALLForPStateChange[DC__NUM_DPP__MAX])
+		enum dm_use_mall_for_pstate_change_mode UsesMALLForPStateChange[])
 {
 	int k;
 	double SwathSizeAllSurfaces = 0;
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
index 5c7196d1ddef..d41c4d8b0c7a 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
@@ -1160,6 +1160,6 @@ bool dml32_CalculateDETSwathFillLatencyHiding(unsigned int NumberOfActiveSurface
 		double	PixelClock[],
 		double	VRatioY[],
 		double	VRatioC[],
-		enum dm_use_mall_for_pstate_change_mode UsesMALLForPStateChange[DC__NUM_DPP__MAX]);
+		enum dm_use_mall_for_pstate_change_mode UsesMALLForPStateChange[]);
 
 #endif
-- 
2.39.0

[PATCH 17/37] drm/amd/display: Change i2c speed for hdcp

[Rodrigo Siqueira]

From: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>

[why]
HDCP 1.4 failed on SL8800 SW w/a test driver use.

[how]
slower down the HW i2c speed when used by HW i2c.

Reviewed-by: Aurabindo Pillai <Aurabindo.Pillai@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn316/dcn316_resource.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn316/dcn316_resource.c b/drivers/gpu/drm/amd/display/dc/dcn316/dcn316_resource.c
index b4d5076e124c..dc0b49506275 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn316/dcn316_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn316/dcn316_resource.c
@@ -1776,7 +1776,7 @@ static bool dcn316_resource_construct(
 	pool->base.mpcc_count = pool->base.res_cap->num_timing_generator;
 	dc->caps.max_downscale_ratio = 600;
 	dc->caps.i2c_speed_in_khz = 100;
-	dc->caps.i2c_speed_in_khz_hdcp = 100;
+	dc->caps.i2c_speed_in_khz_hdcp = 5; /*1.5 w/a applied by default*/
 	dc->caps.max_cursor_size = 256;
 	dc->caps.min_horizontal_blanking_period = 80;
 	dc->caps.dmdata_alloc_size = 2048;
-- 
2.39.0

[PATCH 18/37] drm/amd/display: Remove SubVp support if src/dst rect does not equal stream timing

[Rodrigo Siqueira]

From: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>

Current implementation of SubVP does not support cases where stream
timing matched neither the destination rect nor the source rect.

Will need to further debug to see how we can support these cases.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>
---
 .../gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
index 50f20549c951..0fc79d75ce76 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
@@ -240,6 +240,14 @@ bool dcn32_is_center_timing(struct pipe_ctx *pipe)
 			is_center_timing = true;
 		}
 	}
+
+	if (pipe->plane_state) {
+		if (pipe->stream->timing.v_addressable != pipe->plane_state->dst_rect.height &&
+				pipe->stream->timing.v_addressable != pipe->plane_state->src_rect.height) {
+			is_center_timing = true;
+		}
+	}
+
 	return is_center_timing;
 }
 
-- 
2.39.0

[PATCH 19/37] drm/amd/display: move dp link training logic to link_dp_training

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

[why]
Extract dp link training logic out to their own files.
link_dp_training - high level training sequence and helper functions.
link_dp_training_8b_10b - dp1.x training
link_dp_training_auxless - aux-less training
link_dp_traininig_dpia - dpia training
link_dp_training_fixed_vs_pe_retimer - fixed vs pe retimer training
link_dp_training_128b_132b - dp2.1 training

Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |    1 +
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 3237 +----------------
 drivers/gpu/drm/amd/display/dc/dc_dp_types.h  |    3 +
 drivers/gpu/drm/amd/display/dc/dc_link.h      |   24 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_dp.h   |  114 +-
 drivers/gpu/drm/amd/display/dc/link/Makefile  |    4 +-
 .../drm/amd/display/dc/link/link_dp_dpia.c    |  945 +----
 .../drm/amd/display/dc/link/link_dp_dpia.h    |   60 -
 .../amd/display/dc/link/link_dp_training.c    | 1698 +++++++++
 .../amd/display/dc/link/link_dp_training.h    |  179 +
 .../dc/link/link_dp_training_128b_132b.c      |  258 ++
 .../dc/link/link_dp_training_128b_132b.h      |   42 +
 .../display/dc/link/link_dp_training_8b_10b.c |  413 +++
 .../display/dc/link/link_dp_training_8b_10b.h |   61 +
 .../dc/link/link_dp_training_auxless.c        |   80 +
 .../dc/link/link_dp_training_auxless.h        |   35 +
 .../display/dc/link/link_dp_training_dpia.c   | 1044 ++++++
 .../display/dc/link/link_dp_training_dpia.h   |   41 +
 .../link_dp_training_fixed_vs_pe_retimer.c    |  578 +++
 .../link_dp_training_fixed_vs_pe_retimer.h    |   45 +
 .../gpu/drm/amd/display/dc/link/link_dpcd.h   |    1 +
 .../amd/display/include/ddc_service_types.h   |    5 +
 22 files changed, 4647 insertions(+), 4221 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.h

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index cb3a57190cb7..6a2e0d867853 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -54,6 +54,7 @@
 #include "link/link_dpcd.h"
 #include "link/link_dp_trace.h"
 #include "link/link_hpd.h"
+#include "link/link_dp_training.h"
 
 #include "dc/dcn30/dcn30_vpg.h"
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 9edfcdf3db3b..baf2e35d0ac6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -27,2838 +27,131 @@
 #include "dm_helpers.h"
 #include "opp.h"
 #include "dsc.h"
-#include "clk_mgr.h"
-#include "resource.h"
-
-#include "inc/core_types.h"
-#include "link_hwss.h"
-#include "link/link_ddc.h"
-#include "core_status.h"
-#include "dpcd_defs.h"
-#include "dc_dmub_srv.h"
-#include "dce/dmub_hw_lock_mgr.h"
-#include "link/link_dp_dpia.h"
-#include "inc/link_enc_cfg.h"
-#include "link/link_dp_trace.h"
-
-/*Travis*/
-static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
-/*Nutmeg*/
-static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
-
-#define DC_LOGGER \
-	link->ctx->logger
-#define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
-
-#include "link/link_dpcd.h"
-
-#ifndef MAX
-#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
-#endif
-#ifndef MIN
-#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
-#endif
-
-	/* maximum pre emphasis level allowed for each voltage swing level*/
-	static const enum dc_pre_emphasis
-	voltage_swing_to_pre_emphasis[] = { PRE_EMPHASIS_LEVEL3,
-					    PRE_EMPHASIS_LEVEL2,
-					    PRE_EMPHASIS_LEVEL1,
-					    PRE_EMPHASIS_DISABLED };
-
-enum {
-	POST_LT_ADJ_REQ_LIMIT = 6,
-	POST_LT_ADJ_REQ_TIMEOUT = 200
-};
-
-struct dp_lt_fallback_entry {
-	enum dc_lane_count lane_count;
-	enum dc_link_rate link_rate;
-};
-
-static const struct dp_lt_fallback_entry dp_lt_fallbacks[] = {
-		/* This link training fallback array is ordered by
-		 * link bandwidth from highest to lowest.
-		 * DP specs makes it a normative policy to always
-		 * choose the next highest link bandwidth during
-		 * link training fallback.
-		 */
-		{LANE_COUNT_FOUR, LINK_RATE_UHBR20},
-		{LANE_COUNT_FOUR, LINK_RATE_UHBR13_5},
-		{LANE_COUNT_TWO, LINK_RATE_UHBR20},
-		{LANE_COUNT_FOUR, LINK_RATE_UHBR10},
-		{LANE_COUNT_TWO, LINK_RATE_UHBR13_5},
-		{LANE_COUNT_FOUR, LINK_RATE_HIGH3},
-		{LANE_COUNT_ONE, LINK_RATE_UHBR20},
-		{LANE_COUNT_TWO, LINK_RATE_UHBR10},
-		{LANE_COUNT_FOUR, LINK_RATE_HIGH2},
-		{LANE_COUNT_ONE, LINK_RATE_UHBR13_5},
-		{LANE_COUNT_TWO, LINK_RATE_HIGH3},
-		{LANE_COUNT_ONE, LINK_RATE_UHBR10},
-		{LANE_COUNT_TWO, LINK_RATE_HIGH2},
-		{LANE_COUNT_FOUR, LINK_RATE_HIGH},
-		{LANE_COUNT_ONE, LINK_RATE_HIGH3},
-		{LANE_COUNT_FOUR, LINK_RATE_LOW},
-		{LANE_COUNT_ONE, LINK_RATE_HIGH2},
-		{LANE_COUNT_TWO, LINK_RATE_HIGH},
-		{LANE_COUNT_TWO, LINK_RATE_LOW},
-		{LANE_COUNT_ONE, LINK_RATE_HIGH},
-		{LANE_COUNT_ONE, LINK_RATE_LOW},
-};
-
-static const struct dc_link_settings fail_safe_link_settings = {
-		.lane_count = LANE_COUNT_ONE,
-		.link_rate = LINK_RATE_LOW,
-		.link_spread = LINK_SPREAD_DISABLED,
-};
-
-static bool decide_fallback_link_setting(
-		struct dc_link *link,
-		struct dc_link_settings *max,
-		struct dc_link_settings *cur,
-		enum link_training_result training_result);
-static void maximize_lane_settings(const struct link_training_settings *lt_settings,
-		struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX]);
-static void override_lane_settings(const struct link_training_settings *lt_settings,
-		struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX]);
-
-static uint32_t get_cr_training_aux_rd_interval(struct dc_link *link,
-		const struct dc_link_settings *link_settings)
-{
-	union training_aux_rd_interval training_rd_interval;
-	uint32_t wait_in_micro_secs = 100;
-
-	memset(&training_rd_interval, 0, sizeof(training_rd_interval));
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
-			link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
-		core_link_read_dpcd(
-				link,
-				DP_TRAINING_AUX_RD_INTERVAL,
-				(uint8_t *)&training_rd_interval,
-				sizeof(training_rd_interval));
-		if (training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL)
-			wait_in_micro_secs = training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL * 4000;
-	}
-
-	return wait_in_micro_secs;
-}
-
-static uint32_t get_eq_training_aux_rd_interval(
-	struct dc_link *link,
-	const struct dc_link_settings *link_settings)
-{
-	union training_aux_rd_interval training_rd_interval;
-
-	memset(&training_rd_interval, 0, sizeof(training_rd_interval));
-	if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
-		core_link_read_dpcd(
-				link,
-				DP_128b_132b_TRAINING_AUX_RD_INTERVAL,
-				(uint8_t *)&training_rd_interval,
-				sizeof(training_rd_interval));
-	} else if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
-			link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
-		core_link_read_dpcd(
-				link,
-				DP_TRAINING_AUX_RD_INTERVAL,
-				(uint8_t *)&training_rd_interval,
-				sizeof(training_rd_interval));
-	}
-
-	switch (training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL) {
-	case 0: return 400;
-	case 1: return 4000;
-	case 2: return 8000;
-	case 3: return 12000;
-	case 4: return 16000;
-	case 5: return 32000;
-	case 6: return 64000;
-	default: return 400;
-	}
-}
-
-void dp_wait_for_training_aux_rd_interval(
-	struct dc_link *link,
-	uint32_t wait_in_micro_secs)
-{
-	if (wait_in_micro_secs > 1000)
-		msleep(wait_in_micro_secs/1000);
-	else
-		udelay(wait_in_micro_secs);
-
-	DC_LOG_HW_LINK_TRAINING("%s:\n wait = %d\n",
-		__func__,
-		wait_in_micro_secs);
-}
-
-enum dpcd_training_patterns
-	dc_dp_training_pattern_to_dpcd_training_pattern(
-	struct dc_link *link,
-	enum dc_dp_training_pattern pattern)
-{
-	enum dpcd_training_patterns dpcd_tr_pattern =
-	DPCD_TRAINING_PATTERN_VIDEOIDLE;
-
-	switch (pattern) {
-	case DP_TRAINING_PATTERN_SEQUENCE_1:
-		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_1;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_2:
-		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_2;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_3:
-		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_3;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_4:
-		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_4;
-		break;
-	case DP_128b_132b_TPS1:
-		dpcd_tr_pattern = DPCD_128b_132b_TPS1;
-		break;
-	case DP_128b_132b_TPS2:
-		dpcd_tr_pattern = DPCD_128b_132b_TPS2;
-		break;
-	case DP_128b_132b_TPS2_CDS:
-		dpcd_tr_pattern = DPCD_128b_132b_TPS2_CDS;
-		break;
-	case DP_TRAINING_PATTERN_VIDEOIDLE:
-		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_VIDEOIDLE;
-		break;
-	default:
-		ASSERT(0);
-		DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
-			__func__, pattern);
-		break;
-	}
-
-	return dpcd_tr_pattern;
-}
-
-static void dpcd_set_training_pattern(
-	struct dc_link *link,
-	enum dc_dp_training_pattern training_pattern)
-{
-	union dpcd_training_pattern dpcd_pattern = {0};
-
-	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
-			dc_dp_training_pattern_to_dpcd_training_pattern(
-					link, training_pattern);
-
-	core_link_write_dpcd(
-		link,
-		DP_TRAINING_PATTERN_SET,
-		&dpcd_pattern.raw,
-		1);
-
-	DC_LOG_HW_LINK_TRAINING("%s\n %x pattern = %x\n",
-		__func__,
-		DP_TRAINING_PATTERN_SET,
-		dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
-}
-
-static enum dc_dp_training_pattern decide_cr_training_pattern(
-		const struct dc_link_settings *link_settings)
-{
-	switch (dp_get_link_encoding_format(link_settings)) {
-	case DP_8b_10b_ENCODING:
-	default:
-		return DP_TRAINING_PATTERN_SEQUENCE_1;
-	case DP_128b_132b_ENCODING:
-		return DP_128b_132b_TPS1;
-	}
-}
-
-static enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link,
-		const struct dc_link_settings *link_settings)
-{
-	struct link_encoder *link_enc;
-	struct encoder_feature_support *enc_caps;
-	struct dpcd_caps *rx_caps = &link->dpcd_caps;
-	enum dc_dp_training_pattern pattern = DP_TRAINING_PATTERN_SEQUENCE_2;
-
-	link_enc = link_enc_cfg_get_link_enc(link);
-	ASSERT(link_enc);
-	enc_caps = &link_enc->features;
-
-	switch (dp_get_link_encoding_format(link_settings)) {
-	case DP_8b_10b_ENCODING:
-		if (enc_caps->flags.bits.IS_TPS4_CAPABLE &&
-				rx_caps->max_down_spread.bits.TPS4_SUPPORTED)
-			pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
-		else if (enc_caps->flags.bits.IS_TPS3_CAPABLE &&
-				rx_caps->max_ln_count.bits.TPS3_SUPPORTED)
-			pattern = DP_TRAINING_PATTERN_SEQUENCE_3;
-		else
-			pattern = DP_TRAINING_PATTERN_SEQUENCE_2;
-		break;
-	case DP_128b_132b_ENCODING:
-		pattern = DP_128b_132b_TPS2;
-		break;
-	default:
-		pattern = DP_TRAINING_PATTERN_SEQUENCE_2;
-		break;
-	}
-	return pattern;
-}
-
-static uint8_t get_dpcd_link_rate(const struct dc_link_settings *link_settings)
-{
-	uint8_t link_rate = 0;
-	enum dp_link_encoding encoding = dp_get_link_encoding_format(link_settings);
-
-	if (encoding == DP_128b_132b_ENCODING)
-		switch (link_settings->link_rate) {
-		case LINK_RATE_UHBR10:
-			link_rate = 0x1;
-			break;
-		case LINK_RATE_UHBR20:
-			link_rate = 0x2;
-			break;
-		case LINK_RATE_UHBR13_5:
-			link_rate = 0x4;
-			break;
-		default:
-			link_rate = 0;
-			break;
-		}
-	else if (encoding == DP_8b_10b_ENCODING)
-		link_rate = (uint8_t) link_settings->link_rate;
-	else
-		link_rate = 0;
-
-	return link_rate;
-}
-
-static void dp_fixed_vs_pe_read_lane_adjust(
-	struct dc_link *link,
-	union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX])
-{
-	const uint8_t vendor_lttpr_write_data_vs[3] = {0x0, 0x53, 0x63};
-	const uint8_t vendor_lttpr_write_data_pe[3] = {0x0, 0x54, 0x63};
-	const uint8_t offset = dp_convert_to_count(
-			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-	uint32_t vendor_lttpr_write_address = 0xF004F;
-	uint32_t vendor_lttpr_read_address = 0xF0053;
-	uint8_t dprx_vs = 0;
-	uint8_t dprx_pe = 0;
-	uint8_t lane;
-
-	if (offset != 0xFF) {
-		vendor_lttpr_write_address +=
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-		vendor_lttpr_read_address +=
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-	}
-
-	/* W/A to read lane settings requested by DPRX */
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_vs[0],
-			sizeof(vendor_lttpr_write_data_vs));
-	core_link_read_dpcd(
-			link,
-			vendor_lttpr_read_address,
-			&dprx_vs,
-			1);
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_pe[0],
-			sizeof(vendor_lttpr_write_data_pe));
-	core_link_read_dpcd(
-			link,
-			vendor_lttpr_read_address,
-			&dprx_pe,
-			1);
-
-	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET  = (dprx_vs >> (2 * lane)) & 0x3;
-		dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET = (dprx_pe >> (2 * lane)) & 0x3;
-	}
-}
-
-static void dp_fixed_vs_pe_set_retimer_lane_settings(
-	struct dc_link *link,
-	const union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX],
-	uint8_t lane_count)
-{
-	const uint8_t offset = dp_convert_to_count(
-			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-	const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF};
-	uint32_t vendor_lttpr_write_address = 0xF004F;
-	uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0};
-	uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0};
-	uint8_t lane = 0;
-
-	if (offset != 0xFF) {
-		vendor_lttpr_write_address +=
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-	}
-
-	for (lane = 0; lane < lane_count; lane++) {
-		vendor_lttpr_write_data_vs[3] |=
-				dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET << (2 * lane);
-		vendor_lttpr_write_data_pe[3] |=
-				dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET << (2 * lane);
-	}
-
-	/* Force LTTPR to output desired VS and PE */
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_reset[0],
-			sizeof(vendor_lttpr_write_data_reset));
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_vs[0],
-			sizeof(vendor_lttpr_write_data_vs));
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_pe[0],
-			sizeof(vendor_lttpr_write_data_pe));
-}
-
-enum dc_status dpcd_set_link_settings(
-	struct dc_link *link,
-	const struct link_training_settings *lt_settings)
-{
-	uint8_t rate;
-	enum dc_status status;
-
-	union down_spread_ctrl downspread = {0};
-	union lane_count_set lane_count_set = {0};
-
-	downspread.raw = (uint8_t)
-	(lt_settings->link_settings.link_spread);
-
-	lane_count_set.bits.LANE_COUNT_SET =
-	lt_settings->link_settings.lane_count;
-
-	lane_count_set.bits.ENHANCED_FRAMING = lt_settings->enhanced_framing;
-	lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED = 0;
-
-
-	if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
-			lt_settings->pattern_for_eq < DP_TRAINING_PATTERN_SEQUENCE_4) {
-		lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED =
-				link->dpcd_caps.max_ln_count.bits.POST_LT_ADJ_REQ_SUPPORTED;
-	}
-
-	status = core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
-		&downspread.raw, sizeof(downspread));
-
-	status = core_link_write_dpcd(link, DP_LANE_COUNT_SET,
-		&lane_count_set.raw, 1);
-
-	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 &&
-			lt_settings->link_settings.use_link_rate_set == true) {
-		rate = 0;
-		/* WA for some MUX chips that will power down with eDP and lose supported
-		 * link rate set for eDP 1.4. Source reads DPCD 0x010 again to ensure
-		 * MUX chip gets link rate set back before link training.
-		 */
-		if (link->connector_signal == SIGNAL_TYPE_EDP) {
-			uint8_t supported_link_rates[16];
-
-			core_link_read_dpcd(link, DP_SUPPORTED_LINK_RATES,
-					supported_link_rates, sizeof(supported_link_rates));
-		}
-		status = core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
-		status = core_link_write_dpcd(link, DP_LINK_RATE_SET,
-				&lt_settings->link_settings.link_rate_set, 1);
-	} else {
-		rate = get_dpcd_link_rate(&lt_settings->link_settings);
-
-		status = core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
-	}
-
-	if (rate) {
-		DC_LOG_HW_LINK_TRAINING("%s\n %x rate = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
-			__func__,
-			DP_LINK_BW_SET,
-			lt_settings->link_settings.link_rate,
-			DP_LANE_COUNT_SET,
-			lt_settings->link_settings.lane_count,
-			lt_settings->enhanced_framing,
-			DP_DOWNSPREAD_CTRL,
-			lt_settings->link_settings.link_spread);
-	} else {
-		DC_LOG_HW_LINK_TRAINING("%s\n %x rate set = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
-			__func__,
-			DP_LINK_RATE_SET,
-			lt_settings->link_settings.link_rate_set,
-			DP_LANE_COUNT_SET,
-			lt_settings->link_settings.lane_count,
-			lt_settings->enhanced_framing,
-			DP_DOWNSPREAD_CTRL,
-			lt_settings->link_settings.link_spread);
-	}
-
-	return status;
-}
-
-uint8_t dc_dp_initialize_scrambling_data_symbols(
-	struct dc_link *link,
-	enum dc_dp_training_pattern pattern)
-{
-	uint8_t disable_scrabled_data_symbols = 0;
-
-	switch (pattern) {
-	case DP_TRAINING_PATTERN_SEQUENCE_1:
-	case DP_TRAINING_PATTERN_SEQUENCE_2:
-	case DP_TRAINING_PATTERN_SEQUENCE_3:
-		disable_scrabled_data_symbols = 1;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_4:
-	case DP_128b_132b_TPS1:
-	case DP_128b_132b_TPS2:
-		disable_scrabled_data_symbols = 0;
-		break;
-	default:
-		ASSERT(0);
-		DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
-			__func__, pattern);
-		break;
-	}
-	return disable_scrabled_data_symbols;
-}
-
-static inline bool is_repeater(const struct link_training_settings *lt_settings, uint32_t offset)
-{
-	return (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) && (offset != 0);
-}
-
-static void dpcd_set_lt_pattern_and_lane_settings(
-	struct dc_link *link,
-	const struct link_training_settings *lt_settings,
-	enum dc_dp_training_pattern pattern,
-	uint32_t offset)
-{
-	uint32_t dpcd_base_lt_offset;
-
-	uint8_t dpcd_lt_buffer[5] = {0};
-	union dpcd_training_pattern dpcd_pattern = {0};
-	uint32_t size_in_bytes;
-	bool edp_workaround = false; /* TODO link_prop.INTERNAL */
-	dpcd_base_lt_offset = DP_TRAINING_PATTERN_SET;
-
-	if (is_repeater(lt_settings, offset))
-		dpcd_base_lt_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
-			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-
-	/*****************************************************************
-	* DpcdAddress_TrainingPatternSet
-	*****************************************************************/
-	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
-		dc_dp_training_pattern_to_dpcd_training_pattern(link, pattern);
-
-	dpcd_pattern.v1_4.SCRAMBLING_DISABLE =
-		dc_dp_initialize_scrambling_data_symbols(link, pattern);
-
-	dpcd_lt_buffer[DP_TRAINING_PATTERN_SET - DP_TRAINING_PATTERN_SET]
-		= dpcd_pattern.raw;
-
-	if (is_repeater(lt_settings, offset)) {
-		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n 0x%X pattern = %x\n",
-			__func__,
-			offset,
-			dpcd_base_lt_offset,
-			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
-	} else {
-		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X pattern = %x\n",
-			__func__,
-			dpcd_base_lt_offset,
-			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
-	}
-
-	/* concatenate everything into one buffer*/
-	size_in_bytes = lt_settings->link_settings.lane_count *
-			sizeof(lt_settings->dpcd_lane_settings[0]);
-
-	 // 0x00103 - 0x00102
-	memmove(
-		&dpcd_lt_buffer[DP_TRAINING_LANE0_SET - DP_TRAINING_PATTERN_SET],
-		lt_settings->dpcd_lane_settings,
-		size_in_bytes);
-
-	if (is_repeater(lt_settings, offset)) {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_128b_132b_ENCODING)
-			DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
-					" 0x%X TX_FFE_PRESET_VALUE = %x\n",
-					__func__,
-					offset,
-					dpcd_base_lt_offset,
-					lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
-		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_8b_10b_ENCODING)
-		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
-				" 0x%X VS set = %x PE set = %x max VS Reached = %x  max PE Reached = %x\n",
-			__func__,
-			offset,
-			dpcd_base_lt_offset,
-			lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
-			lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
-			lt_settings->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
-			lt_settings->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
-	} else {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_128b_132b_ENCODING)
-			DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X TX_FFE_PRESET_VALUE = %x\n",
-					__func__,
-					dpcd_base_lt_offset,
-					lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
-		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_8b_10b_ENCODING)
-			DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
-					__func__,
-					dpcd_base_lt_offset,
-					lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
-					lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
-					lt_settings->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
-					lt_settings->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
-	}
-	if (edp_workaround) {
-		/* for eDP write in 2 parts because the 5-byte burst is
-		* causing issues on some eDP panels (EPR#366724)
-		*/
-		core_link_write_dpcd(
-			link,
-			DP_TRAINING_PATTERN_SET,
-			&dpcd_pattern.raw,
-			sizeof(dpcd_pattern.raw));
-
-		core_link_write_dpcd(
-			link,
-			DP_TRAINING_LANE0_SET,
-			(uint8_t *)(lt_settings->dpcd_lane_settings),
-			size_in_bytes);
-
-	} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-			DP_128b_132b_ENCODING) {
-		core_link_write_dpcd(
-				link,
-				dpcd_base_lt_offset,
-				dpcd_lt_buffer,
-				sizeof(dpcd_lt_buffer));
-	} else
-		/* write it all in (1 + number-of-lanes)-byte burst*/
-		core_link_write_dpcd(
-				link,
-				dpcd_base_lt_offset,
-				dpcd_lt_buffer,
-				size_in_bytes + sizeof(dpcd_pattern.raw));
-}
-
-bool dp_is_cr_done(enum dc_lane_count ln_count,
-	union lane_status *dpcd_lane_status)
-{
-	uint32_t lane;
-	/*LANEx_CR_DONE bits All 1's?*/
-	for (lane = 0; lane < (uint32_t)(ln_count); lane++) {
-		if (!dpcd_lane_status[lane].bits.CR_DONE_0)
-			return false;
-	}
-	return true;
-}
-
-bool dp_is_ch_eq_done(enum dc_lane_count ln_count,
-		union lane_status *dpcd_lane_status)
-{
-	bool done = true;
-	uint32_t lane;
-	for (lane = 0; lane < (uint32_t)(ln_count); lane++)
-		if (!dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0)
-			done = false;
-	return done;
-}
-
-bool dp_is_symbol_locked(enum dc_lane_count ln_count,
-		union lane_status *dpcd_lane_status)
-{
-	bool locked = true;
-	uint32_t lane;
-	for (lane = 0; lane < (uint32_t)(ln_count); lane++)
-		if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0)
-			locked = false;
-	return locked;
-}
-
-bool dp_is_interlane_aligned(union lane_align_status_updated align_status)
-{
-	return align_status.bits.INTERLANE_ALIGN_DONE == 1;
-}
-
-void dp_hw_to_dpcd_lane_settings(
-		const struct link_training_settings *lt_settings,
-		const struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
-		union dpcd_training_lane dpcd_lane_settings[])
-{
-	uint8_t lane = 0;
-
-	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_8b_10b_ENCODING) {
-			dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET =
-					(uint8_t)(hw_lane_settings[lane].VOLTAGE_SWING);
-			dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET =
-					(uint8_t)(hw_lane_settings[lane].PRE_EMPHASIS);
-			dpcd_lane_settings[lane].bits.MAX_SWING_REACHED =
-					(hw_lane_settings[lane].VOLTAGE_SWING ==
-							VOLTAGE_SWING_MAX_LEVEL ? 1 : 0);
-			dpcd_lane_settings[lane].bits.MAX_PRE_EMPHASIS_REACHED =
-					(hw_lane_settings[lane].PRE_EMPHASIS ==
-							PRE_EMPHASIS_MAX_LEVEL ? 1 : 0);
-		}
-		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_128b_132b_ENCODING) {
-			dpcd_lane_settings[lane].tx_ffe.PRESET_VALUE =
-					hw_lane_settings[lane].FFE_PRESET.settings.level;
-		}
-	}
-}
-
-void dp_decide_lane_settings(
-		const struct link_training_settings *lt_settings,
-		const union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
-		struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
-		union dpcd_training_lane dpcd_lane_settings[])
-{
-	uint32_t lane;
-
-	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_8b_10b_ENCODING) {
-			hw_lane_settings[lane].VOLTAGE_SWING =
-					(enum dc_voltage_swing)(ln_adjust[lane].bits.
-							VOLTAGE_SWING_LANE);
-			hw_lane_settings[lane].PRE_EMPHASIS =
-					(enum dc_pre_emphasis)(ln_adjust[lane].bits.
-							PRE_EMPHASIS_LANE);
-		}
-		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_128b_132b_ENCODING) {
-			hw_lane_settings[lane].FFE_PRESET.raw =
-					ln_adjust[lane].tx_ffe.PRESET_VALUE;
-		}
-	}
-	dp_hw_to_dpcd_lane_settings(lt_settings, hw_lane_settings, dpcd_lane_settings);
-
-	if (lt_settings->disallow_per_lane_settings) {
-		/* we find the maximum of the requested settings across all lanes*/
-		/* and set this maximum for all lanes*/
-		maximize_lane_settings(lt_settings, hw_lane_settings);
-		override_lane_settings(lt_settings, hw_lane_settings);
-
-		if (lt_settings->always_match_dpcd_with_hw_lane_settings)
-			dp_hw_to_dpcd_lane_settings(lt_settings, hw_lane_settings, dpcd_lane_settings);
-	}
-
-}
-
-static uint8_t get_nibble_at_index(const uint8_t *buf,
-	uint32_t index)
-{
-	uint8_t nibble;
-	nibble = buf[index / 2];
-
-	if (index % 2)
-		nibble >>= 4;
-	else
-		nibble &= 0x0F;
-
-	return nibble;
-}
-
-static enum dc_pre_emphasis get_max_pre_emphasis_for_voltage_swing(
-	enum dc_voltage_swing voltage)
-{
-	enum dc_pre_emphasis pre_emphasis;
-	pre_emphasis = PRE_EMPHASIS_MAX_LEVEL;
-
-	if (voltage <= VOLTAGE_SWING_MAX_LEVEL)
-		pre_emphasis = voltage_swing_to_pre_emphasis[voltage];
-
-	return pre_emphasis;
-
-}
-
-static void maximize_lane_settings(const struct link_training_settings *lt_settings,
-		struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX])
-{
-	uint32_t lane;
-	struct dc_lane_settings max_requested;
-
-	max_requested.VOLTAGE_SWING = lane_settings[0].VOLTAGE_SWING;
-	max_requested.PRE_EMPHASIS = lane_settings[0].PRE_EMPHASIS;
-	max_requested.FFE_PRESET = lane_settings[0].FFE_PRESET;
-
-	/* Determine what the maximum of the requested settings are*/
-	for (lane = 1; lane < lt_settings->link_settings.lane_count; lane++) {
-		if (lane_settings[lane].VOLTAGE_SWING > max_requested.VOLTAGE_SWING)
-			max_requested.VOLTAGE_SWING = lane_settings[lane].VOLTAGE_SWING;
-
-		if (lane_settings[lane].PRE_EMPHASIS > max_requested.PRE_EMPHASIS)
-			max_requested.PRE_EMPHASIS = lane_settings[lane].PRE_EMPHASIS;
-		if (lane_settings[lane].FFE_PRESET.settings.level >
-				max_requested.FFE_PRESET.settings.level)
-			max_requested.FFE_PRESET.settings.level =
-					lane_settings[lane].FFE_PRESET.settings.level;
-	}
-
-	/* make sure the requested settings are
-	 * not higher than maximum settings*/
-	if (max_requested.VOLTAGE_SWING > VOLTAGE_SWING_MAX_LEVEL)
-		max_requested.VOLTAGE_SWING = VOLTAGE_SWING_MAX_LEVEL;
-
-	if (max_requested.PRE_EMPHASIS > PRE_EMPHASIS_MAX_LEVEL)
-		max_requested.PRE_EMPHASIS = PRE_EMPHASIS_MAX_LEVEL;
-	if (max_requested.FFE_PRESET.settings.level > DP_FFE_PRESET_MAX_LEVEL)
-		max_requested.FFE_PRESET.settings.level = DP_FFE_PRESET_MAX_LEVEL;
-
-	/* make sure the pre-emphasis matches the voltage swing*/
-	if (max_requested.PRE_EMPHASIS >
-		get_max_pre_emphasis_for_voltage_swing(
-			max_requested.VOLTAGE_SWING))
-		max_requested.PRE_EMPHASIS =
-		get_max_pre_emphasis_for_voltage_swing(
-			max_requested.VOLTAGE_SWING);
-
-	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		lane_settings[lane].VOLTAGE_SWING = max_requested.VOLTAGE_SWING;
-		lane_settings[lane].PRE_EMPHASIS = max_requested.PRE_EMPHASIS;
-		lane_settings[lane].FFE_PRESET = max_requested.FFE_PRESET;
-	}
-}
-
-static void override_lane_settings(const struct link_training_settings *lt_settings,
-		struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX])
-{
-	uint32_t lane;
-
-	if (lt_settings->voltage_swing == NULL &&
-	    lt_settings->pre_emphasis == NULL &&
-	    lt_settings->ffe_preset == NULL &&
-	    lt_settings->post_cursor2 == NULL)
-
-		return;
-
-	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		if (lt_settings->voltage_swing)
-			lane_settings[lane].VOLTAGE_SWING = *lt_settings->voltage_swing;
-		if (lt_settings->pre_emphasis)
-			lane_settings[lane].PRE_EMPHASIS = *lt_settings->pre_emphasis;
-		if (lt_settings->post_cursor2)
-			lane_settings[lane].POST_CURSOR2 = *lt_settings->post_cursor2;
-		if (lt_settings->ffe_preset)
-			lane_settings[lane].FFE_PRESET = *lt_settings->ffe_preset;
-	}
-}
-
-enum dc_status dp_get_lane_status_and_lane_adjust(
-	struct dc_link *link,
-	const struct link_training_settings *link_training_setting,
-	union lane_status ln_status[LANE_COUNT_DP_MAX],
-	union lane_align_status_updated *ln_align,
-	union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
-	uint32_t offset)
-{
-	unsigned int lane01_status_address = DP_LANE0_1_STATUS;
-	uint8_t lane_adjust_offset = 4;
-	unsigned int lane01_adjust_address;
-	uint8_t dpcd_buf[6] = {0};
-	uint32_t lane;
-	enum dc_status status;
-
-	if (is_repeater(link_training_setting, offset)) {
-		lane01_status_address =
-				DP_LANE0_1_STATUS_PHY_REPEATER1 +
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-		lane_adjust_offset = 3;
-	}
-
-	status = core_link_read_dpcd(
-		link,
-		lane01_status_address,
-		(uint8_t *)(dpcd_buf),
-		sizeof(dpcd_buf));
-
-	if (status != DC_OK) {
-		DC_LOG_HW_LINK_TRAINING("%s:\n Failed to read from address 0x%X,"
-			" keep current lane status and lane adjust unchanged",
-			__func__,
-			lane01_status_address);
-		return status;
-	}
-
-	for (lane = 0; lane <
-		(uint32_t)(link_training_setting->link_settings.lane_count);
-		lane++) {
-
-		ln_status[lane].raw =
-			get_nibble_at_index(&dpcd_buf[0], lane);
-		ln_adjust[lane].raw =
-			get_nibble_at_index(&dpcd_buf[lane_adjust_offset], lane);
-	}
-
-	ln_align->raw = dpcd_buf[2];
-
-	if (is_repeater(link_training_setting, offset)) {
-		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
-				" 0x%X Lane01Status = %x\n 0x%X Lane23Status = %x\n ",
-			__func__,
-			offset,
-			lane01_status_address, dpcd_buf[0],
-			lane01_status_address + 1, dpcd_buf[1]);
-
-		lane01_adjust_address = DP_ADJUST_REQUEST_LANE0_1_PHY_REPEATER1 +
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-
-		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
-				" 0x%X Lane01AdjustRequest = %x\n 0x%X Lane23AdjustRequest = %x\n",
-					__func__,
-					offset,
-					lane01_adjust_address,
-					dpcd_buf[lane_adjust_offset],
-					lane01_adjust_address + 1,
-					dpcd_buf[lane_adjust_offset + 1]);
-	} else {
-		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X Lane01Status = %x\n 0x%X Lane23Status = %x\n ",
-			__func__,
-			lane01_status_address, dpcd_buf[0],
-			lane01_status_address + 1, dpcd_buf[1]);
-
-		lane01_adjust_address = DP_ADJUST_REQUEST_LANE0_1;
-
-		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X Lane01AdjustRequest = %x\n 0x%X Lane23AdjustRequest = %x\n",
-			__func__,
-			lane01_adjust_address,
-			dpcd_buf[lane_adjust_offset],
-			lane01_adjust_address + 1,
-			dpcd_buf[lane_adjust_offset + 1]);
-	}
-
-	return status;
-}
-
-static enum dc_status dpcd_128b_132b_set_lane_settings(
-		struct dc_link *link,
-		const struct link_training_settings *link_training_setting)
-{
-	enum dc_status status = core_link_write_dpcd(link,
-			DP_TRAINING_LANE0_SET,
-			(uint8_t *)(link_training_setting->dpcd_lane_settings),
-			sizeof(link_training_setting->dpcd_lane_settings));
-
-	DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X TX_FFE_PRESET_VALUE = %x\n",
-			__func__,
-			DP_TRAINING_LANE0_SET,
-			link_training_setting->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
-	return status;
-}
-
-
-enum dc_status dpcd_set_lane_settings(
-	struct dc_link *link,
-	const struct link_training_settings *link_training_setting,
-	uint32_t offset)
-{
-	unsigned int lane0_set_address;
-	enum dc_status status;
-
-	lane0_set_address = DP_TRAINING_LANE0_SET;
-
-	if (is_repeater(link_training_setting, offset))
-		lane0_set_address = DP_TRAINING_LANE0_SET_PHY_REPEATER1 +
-		((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-
-	status = core_link_write_dpcd(link,
-		lane0_set_address,
-		(uint8_t *)(link_training_setting->dpcd_lane_settings),
-		link_training_setting->link_settings.lane_count);
-
-	if (is_repeater(link_training_setting, offset)) {
-		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n"
-				" 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
-			__func__,
-			offset,
-			lane0_set_address,
-			link_training_setting->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
-			link_training_setting->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
-			link_training_setting->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
-			link_training_setting->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
-
-	} else {
-		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
-			__func__,
-			lane0_set_address,
-			link_training_setting->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
-			link_training_setting->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
-			link_training_setting->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
-			link_training_setting->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
-	}
-
-	return status;
-}
-
-bool dp_is_max_vs_reached(
-	const struct link_training_settings *lt_settings)
-{
-	uint32_t lane;
-	for (lane = 0; lane <
-		(uint32_t)(lt_settings->link_settings.lane_count);
-		lane++) {
-		if (lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET
-			== VOLTAGE_SWING_MAX_LEVEL)
-			return true;
-	}
-	return false;
-
-}
-
-static bool perform_post_lt_adj_req_sequence(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings)
-{
-	enum dc_lane_count lane_count =
-	lt_settings->link_settings.lane_count;
-
-	uint32_t adj_req_count;
-	uint32_t adj_req_timer;
-	bool req_drv_setting_changed;
-	uint32_t lane;
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-	req_drv_setting_changed = false;
-	for (adj_req_count = 0; adj_req_count < POST_LT_ADJ_REQ_LIMIT;
-	adj_req_count++) {
-
-		req_drv_setting_changed = false;
-
-		for (adj_req_timer = 0;
-			adj_req_timer < POST_LT_ADJ_REQ_TIMEOUT;
-			adj_req_timer++) {
-
-			dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				DPRX);
-
-			if (dpcd_lane_status_updated.bits.
-					POST_LT_ADJ_REQ_IN_PROGRESS == 0)
-				return true;
-
-			if (!dp_is_cr_done(lane_count, dpcd_lane_status))
-				return false;
-
-			if (!dp_is_ch_eq_done(lane_count, dpcd_lane_status) ||
-					!dp_is_symbol_locked(lane_count, dpcd_lane_status) ||
-					!dp_is_interlane_aligned(dpcd_lane_status_updated))
-				return false;
-
-			for (lane = 0; lane < (uint32_t)(lane_count); lane++) {
-
-				if (lt_settings->
-				dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET !=
-				dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_LANE ||
-				lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET !=
-				dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_LANE) {
-
-					req_drv_setting_changed = true;
-					break;
-				}
-			}
-
-			if (req_drv_setting_changed) {
-				dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-						lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-
-				dc_link_dp_set_drive_settings(link,
-						link_res,
-						lt_settings);
-				break;
-			}
-
-			msleep(1);
-		}
-
-		if (!req_drv_setting_changed) {
-			DC_LOG_WARNING("%s: Post Link Training Adjust Request Timed out\n",
-				__func__);
-
-			ASSERT(0);
-			return true;
-		}
-	}
-	DC_LOG_WARNING("%s: Post Link Training Adjust Request limit reached\n",
-		__func__);
-
-	ASSERT(0);
-	return true;
-
-}
-
-/* Only used for channel equalization */
-uint32_t dp_translate_training_aux_read_interval(uint32_t dpcd_aux_read_interval)
-{
-	unsigned int aux_rd_interval_us = 400;
-
-	switch (dpcd_aux_read_interval) {
-	case 0x01:
-		aux_rd_interval_us = 4000;
-		break;
-	case 0x02:
-		aux_rd_interval_us = 8000;
-		break;
-	case 0x03:
-		aux_rd_interval_us = 12000;
-		break;
-	case 0x04:
-		aux_rd_interval_us = 16000;
-		break;
-	case 0x05:
-		aux_rd_interval_us = 32000;
-		break;
-	case 0x06:
-		aux_rd_interval_us = 64000;
-		break;
-	default:
-		break;
-	}
-
-	return aux_rd_interval_us;
-}
-
-enum link_training_result dp_get_cr_failure(enum dc_lane_count ln_count,
-					union lane_status *dpcd_lane_status)
-{
-	enum link_training_result result = LINK_TRAINING_SUCCESS;
-
-	if (ln_count >= LANE_COUNT_ONE && !dpcd_lane_status[0].bits.CR_DONE_0)
-		result = LINK_TRAINING_CR_FAIL_LANE0;
-	else if (ln_count >= LANE_COUNT_TWO && !dpcd_lane_status[1].bits.CR_DONE_0)
-		result = LINK_TRAINING_CR_FAIL_LANE1;
-	else if (ln_count >= LANE_COUNT_FOUR && !dpcd_lane_status[2].bits.CR_DONE_0)
-		result = LINK_TRAINING_CR_FAIL_LANE23;
-	else if (ln_count >= LANE_COUNT_FOUR && !dpcd_lane_status[3].bits.CR_DONE_0)
-		result = LINK_TRAINING_CR_FAIL_LANE23;
-	return result;
-}
-
-static enum link_training_result perform_channel_equalization_sequence(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings,
-	uint32_t offset)
-{
-	enum dc_dp_training_pattern tr_pattern;
-	uint32_t retries_ch_eq;
-	uint32_t wait_time_microsec;
-	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-	/* Note: also check that TPS4 is a supported feature*/
-	tr_pattern = lt_settings->pattern_for_eq;
-
-	if (is_repeater(lt_settings, offset) && dp_get_link_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING)
-		tr_pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
-
-	dp_set_hw_training_pattern(link, link_res, tr_pattern, offset);
-
-	for (retries_ch_eq = 0; retries_ch_eq <= LINK_TRAINING_MAX_RETRY_COUNT;
-		retries_ch_eq++) {
-
-		dp_set_hw_lane_settings(link, link_res, lt_settings, offset);
-
-		/* 2. update DPCD*/
-		if (!retries_ch_eq)
-			/* EPR #361076 - write as a 5-byte burst,
-			 * but only for the 1-st iteration
-			 */
-
-			dpcd_set_lt_pattern_and_lane_settings(
-				link,
-				lt_settings,
-				tr_pattern, offset);
-		else
-			dpcd_set_lane_settings(link, lt_settings, offset);
-
-		/* 3. wait for receiver to lock-on*/
-		wait_time_microsec = lt_settings->eq_pattern_time;
-
-		if (is_repeater(lt_settings, offset))
-			wait_time_microsec =
-					dp_translate_training_aux_read_interval(
-						link->dpcd_caps.lttpr_caps.aux_rd_interval[offset - 1]);
-
-		dp_wait_for_training_aux_rd_interval(
-				link,
-				wait_time_microsec);
-
-		/* 4. Read lane status and requested
-		 * drive settings as set by the sink*/
-
-		dp_get_lane_status_and_lane_adjust(
-			link,
-			lt_settings,
-			dpcd_lane_status,
-			&dpcd_lane_status_updated,
-			dpcd_lane_adjust,
-			offset);
-
-		/* 5. check CR done*/
-		if (!dp_is_cr_done(lane_count, dpcd_lane_status))
-			return dpcd_lane_status[0].bits.CR_DONE_0 ?
-					LINK_TRAINING_EQ_FAIL_CR_PARTIAL :
-					LINK_TRAINING_EQ_FAIL_CR;
-
-		/* 6. check CHEQ done*/
-		if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
-				dp_is_symbol_locked(lane_count, dpcd_lane_status) &&
-				dp_is_interlane_aligned(dpcd_lane_status_updated))
-			return LINK_TRAINING_SUCCESS;
-
-		/* 7. update VS/PE/PC2 in lt_settings*/
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-	}
-
-	return LINK_TRAINING_EQ_FAIL_EQ;
-
-}
-
-static void start_clock_recovery_pattern_early(struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings,
-		uint32_t offset)
-{
-	DC_LOG_HW_LINK_TRAINING("%s\n GPU sends TPS1. Wait 400us.\n",
-			__func__);
-	dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_cr, offset);
-	dp_set_hw_lane_settings(link, link_res, lt_settings, offset);
-	udelay(400);
-}
-
-static enum link_training_result perform_clock_recovery_sequence(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings,
-	uint32_t offset)
-{
-	uint32_t retries_cr;
-	uint32_t retry_count;
-	uint32_t wait_time_microsec;
-	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX];
-	union lane_align_status_updated dpcd_lane_status_updated;
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-	retries_cr = 0;
-	retry_count = 0;
-
-	memset(&dpcd_lane_status, '\0', sizeof(dpcd_lane_status));
-	memset(&dpcd_lane_status_updated, '\0',
-	sizeof(dpcd_lane_status_updated));
-
-	if (!link->ctx->dc->work_arounds.lt_early_cr_pattern)
-		dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_cr, offset);
-
-	/* najeeb - The synaptics MST hub can put the LT in
-	* infinite loop by switching the VS
-	*/
-	/* between level 0 and level 1 continuously, here
-	* we try for CR lock for LinkTrainingMaxCRRetry count*/
-	while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
-		(retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
-
-
-		/* 1. call HWSS to set lane settings*/
-		dp_set_hw_lane_settings(
-				link,
-				link_res,
-				lt_settings,
-				offset);
-
-		/* 2. update DPCD of the receiver*/
-		if (!retry_count)
-			/* EPR #361076 - write as a 5-byte burst,
-			 * but only for the 1-st iteration.*/
-			dpcd_set_lt_pattern_and_lane_settings(
-					link,
-					lt_settings,
-					lt_settings->pattern_for_cr,
-					offset);
-		else
-			dpcd_set_lane_settings(
-					link,
-					lt_settings,
-					offset);
-
-		/* 3. wait receiver to lock-on*/
-		wait_time_microsec = lt_settings->cr_pattern_time;
-
-		dp_wait_for_training_aux_rd_interval(
-				link,
-				wait_time_microsec);
-
-		/* 4. Read lane status and requested drive
-		* settings as set by the sink
-		*/
-		dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				offset);
-
-		/* 5. check CR done*/
-		if (dp_is_cr_done(lane_count, dpcd_lane_status))
-			return LINK_TRAINING_SUCCESS;
-
-		/* 6. max VS reached*/
-		if ((dp_get_link_encoding_format(&lt_settings->link_settings) ==
-				DP_8b_10b_ENCODING) &&
-				dp_is_max_vs_reached(lt_settings))
-			break;
-
-		/* 7. same lane settings*/
-		/* Note: settings are the same for all lanes,
-		 * so comparing first lane is sufficient*/
-		if ((dp_get_link_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING) &&
-				lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
-						dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
-			retries_cr++;
-		else if ((dp_get_link_encoding_format(&lt_settings->link_settings) == DP_128b_132b_ENCODING) &&
-				lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE ==
-						dpcd_lane_adjust[0].tx_ffe.PRESET_VALUE)
-			retries_cr++;
-		else
-			retries_cr = 0;
-
-		/* 8. update VS/PE/PC2 in lt_settings*/
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-		retry_count++;
-	}
-
-	if (retry_count >= LINK_TRAINING_MAX_CR_RETRY) {
-		ASSERT(0);
-		DC_LOG_ERROR("%s: Link Training Error, could not get CR after %d tries. Possibly voltage swing issue",
-			__func__,
-			LINK_TRAINING_MAX_CR_RETRY);
-
-	}
-
-	return dp_get_cr_failure(lane_count, dpcd_lane_status);
-}
-
-static inline enum link_training_result dp_transition_to_video_idle(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings,
-	enum link_training_result status)
-{
-	union lane_count_set lane_count_set = {0};
-
-	/* 4. mainlink output idle pattern*/
-	dp_set_hw_test_pattern(link, link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0);
-
-	/*
-	 * 5. post training adjust if required
-	 * If the upstream DPTX and downstream DPRX both support TPS4,
-	 * TPS4 must be used instead of POST_LT_ADJ_REQ.
-	 */
-	if (link->dpcd_caps.max_ln_count.bits.POST_LT_ADJ_REQ_SUPPORTED != 1 ||
-			lt_settings->pattern_for_eq >= DP_TRAINING_PATTERN_SEQUENCE_4) {
-		/* delay 5ms after Main Link output idle pattern and then check
-		 * DPCD 0202h.
-		 */
-		if (link->connector_signal != SIGNAL_TYPE_EDP && status == LINK_TRAINING_SUCCESS) {
-			msleep(5);
-			status = dp_check_link_loss_status(link, lt_settings);
-		}
-		return status;
-	}
-
-	if (status == LINK_TRAINING_SUCCESS &&
-		perform_post_lt_adj_req_sequence(link, link_res, lt_settings) == false)
-		status = LINK_TRAINING_LQA_FAIL;
-
-	lane_count_set.bits.LANE_COUNT_SET = lt_settings->link_settings.lane_count;
-	lane_count_set.bits.ENHANCED_FRAMING = lt_settings->enhanced_framing;
-	lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED = 0;
-
-	core_link_write_dpcd(
-		link,
-		DP_LANE_COUNT_SET,
-		&lane_count_set.raw,
-		sizeof(lane_count_set));
-
-	return status;
-}
-
-enum link_training_result dp_check_link_loss_status(
-	struct dc_link *link,
-	const struct link_training_settings *link_training_setting)
-{
-	enum link_training_result status = LINK_TRAINING_SUCCESS;
-	union lane_status lane_status;
-	uint8_t dpcd_buf[6] = {0};
-	uint32_t lane;
-
-	core_link_read_dpcd(
-			link,
-			DP_SINK_COUNT,
-			(uint8_t *)(dpcd_buf),
-			sizeof(dpcd_buf));
-
-	/*parse lane status*/
-	for (lane = 0; lane < link->cur_link_settings.lane_count; lane++) {
-		/*
-		 * check lanes status
-		 */
-		lane_status.raw = get_nibble_at_index(&dpcd_buf[2], lane);
-
-		if (!lane_status.bits.CHANNEL_EQ_DONE_0 ||
-			!lane_status.bits.CR_DONE_0 ||
-			!lane_status.bits.SYMBOL_LOCKED_0) {
-			/* if one of the channel equalization, clock
-			 * recovery or symbol lock is dropped
-			 * consider it as (link has been
-			 * dropped) dp sink status has changed
-			 */
-			status = LINK_TRAINING_LINK_LOSS;
-			break;
-		}
-	}
-
-	return status;
-}
-
-static inline void decide_8b_10b_training_settings(
-	 struct dc_link *link,
-	const struct dc_link_settings *link_setting,
-	struct link_training_settings *lt_settings)
-{
-	memset(lt_settings, '\0', sizeof(struct link_training_settings));
-
-	/* Initialize link settings */
-	lt_settings->link_settings.use_link_rate_set = link_setting->use_link_rate_set;
-	lt_settings->link_settings.link_rate_set = link_setting->link_rate_set;
-	lt_settings->link_settings.link_rate = link_setting->link_rate;
-	lt_settings->link_settings.lane_count = link_setting->lane_count;
-	/* TODO hard coded to SS for now
-	 * lt_settings.link_settings.link_spread =
-	 * dal_display_path_is_ss_supported(
-	 * path_mode->display_path) ?
-	 * LINK_SPREAD_05_DOWNSPREAD_30KHZ :
-	 * LINK_SPREAD_DISABLED;
-	 */
-	lt_settings->link_settings.link_spread = link->dp_ss_off ?
-			LINK_SPREAD_DISABLED : LINK_SPREAD_05_DOWNSPREAD_30KHZ;
-	lt_settings->cr_pattern_time = get_cr_training_aux_rd_interval(link, link_setting);
-	lt_settings->eq_pattern_time = get_eq_training_aux_rd_interval(link, link_setting);
-	lt_settings->pattern_for_cr = decide_cr_training_pattern(link_setting);
-	lt_settings->pattern_for_eq = decide_eq_training_pattern(link, link_setting);
-	lt_settings->enhanced_framing = 1;
-	lt_settings->should_set_fec_ready = true;
-	lt_settings->disallow_per_lane_settings = true;
-	lt_settings->always_match_dpcd_with_hw_lane_settings = true;
-	lt_settings->lttpr_mode = dp_decide_8b_10b_lttpr_mode(link);
-	dp_hw_to_dpcd_lane_settings(lt_settings, lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-}
-
-static inline void decide_128b_132b_training_settings(struct dc_link *link,
-		const struct dc_link_settings *link_settings,
-		struct link_training_settings *lt_settings)
-{
-	memset(lt_settings, 0, sizeof(*lt_settings));
-
-	lt_settings->link_settings = *link_settings;
-	/* TODO: should decide link spread when populating link_settings */
-	lt_settings->link_settings.link_spread = link->dp_ss_off ? LINK_SPREAD_DISABLED :
-			LINK_SPREAD_05_DOWNSPREAD_30KHZ;
-
-	lt_settings->pattern_for_cr = decide_cr_training_pattern(link_settings);
-	lt_settings->pattern_for_eq = decide_eq_training_pattern(link, link_settings);
-	lt_settings->eq_pattern_time = 2500;
-	lt_settings->eq_wait_time_limit = 400000;
-	lt_settings->eq_loop_count_limit = 20;
-	lt_settings->pattern_for_cds = DP_128b_132b_TPS2_CDS;
-	lt_settings->cds_pattern_time = 2500;
-	lt_settings->cds_wait_time_limit = (dp_convert_to_count(
-			link->dpcd_caps.lttpr_caps.phy_repeater_cnt) + 1) * 20000;
-	lt_settings->disallow_per_lane_settings = true;
-	lt_settings->lttpr_mode = dp_decide_128b_132b_lttpr_mode(link);
-	dp_hw_to_dpcd_lane_settings(lt_settings,
-			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-}
-
-void dp_decide_training_settings(
-		struct dc_link *link,
-		const struct dc_link_settings *link_settings,
-		struct link_training_settings *lt_settings)
-{
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING)
-		decide_8b_10b_training_settings(link, link_settings, lt_settings);
-	else if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING)
-		decide_128b_132b_training_settings(link, link_settings, lt_settings);
-}
-
-static void override_training_settings(
-		struct dc_link *link,
-		const struct dc_link_training_overrides *overrides,
-		struct link_training_settings *lt_settings)
-{
-	uint32_t lane;
-
-	/* Override link spread */
-	if (!link->dp_ss_off && overrides->downspread != NULL)
-		lt_settings->link_settings.link_spread = *overrides->downspread ?
-				LINK_SPREAD_05_DOWNSPREAD_30KHZ
-				: LINK_SPREAD_DISABLED;
-
-	/* Override lane settings */
-	if (overrides->voltage_swing != NULL)
-		lt_settings->voltage_swing = overrides->voltage_swing;
-	if (overrides->pre_emphasis != NULL)
-		lt_settings->pre_emphasis = overrides->pre_emphasis;
-	if (overrides->post_cursor2 != NULL)
-		lt_settings->post_cursor2 = overrides->post_cursor2;
-	if (overrides->ffe_preset != NULL)
-		lt_settings->ffe_preset = overrides->ffe_preset;
-	/* Override HW lane settings with BIOS forced values if present */
-	if (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN &&
-			lt_settings->lttpr_mode == LTTPR_MODE_TRANSPARENT) {
-		lt_settings->voltage_swing = &link->bios_forced_drive_settings.VOLTAGE_SWING;
-		lt_settings->pre_emphasis = &link->bios_forced_drive_settings.PRE_EMPHASIS;
-		lt_settings->always_match_dpcd_with_hw_lane_settings = false;
-	}
-	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		lt_settings->hw_lane_settings[lane].VOLTAGE_SWING =
-			lt_settings->voltage_swing != NULL ?
-			*lt_settings->voltage_swing :
-			VOLTAGE_SWING_LEVEL0;
-		lt_settings->hw_lane_settings[lane].PRE_EMPHASIS =
-			lt_settings->pre_emphasis != NULL ?
-			*lt_settings->pre_emphasis
-			: PRE_EMPHASIS_DISABLED;
-		lt_settings->hw_lane_settings[lane].POST_CURSOR2 =
-			lt_settings->post_cursor2 != NULL ?
-			*lt_settings->post_cursor2
-			: POST_CURSOR2_DISABLED;
-	}
-
-	if (lt_settings->always_match_dpcd_with_hw_lane_settings)
-		dp_hw_to_dpcd_lane_settings(lt_settings,
-				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-
-	/* Initialize training timings */
-	if (overrides->cr_pattern_time != NULL)
-		lt_settings->cr_pattern_time = *overrides->cr_pattern_time;
-
-	if (overrides->eq_pattern_time != NULL)
-		lt_settings->eq_pattern_time = *overrides->eq_pattern_time;
-
-	if (overrides->pattern_for_cr != NULL)
-		lt_settings->pattern_for_cr = *overrides->pattern_for_cr;
-	if (overrides->pattern_for_eq != NULL)
-		lt_settings->pattern_for_eq = *overrides->pattern_for_eq;
-
-	if (overrides->enhanced_framing != NULL)
-		lt_settings->enhanced_framing = *overrides->enhanced_framing;
-
-	if (link->preferred_training_settings.fec_enable != NULL)
-		lt_settings->should_set_fec_ready = *link->preferred_training_settings.fec_enable;
-
-	#if defined(CONFIG_DRM_AMD_DC_DCN)
-	/* Check DP tunnel LTTPR mode debug option. */
-	if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && link->dc->debug.dpia_debug.bits.force_non_lttpr)
-		lt_settings->lttpr_mode = LTTPR_MODE_NON_LTTPR;
-
-#endif
-	dp_get_lttpr_mode_override(link, &lt_settings->lttpr_mode);
-
-}
-
-uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count)
-{
-	switch (lttpr_repeater_count) {
-	case 0x80: // 1 lttpr repeater
-		return 1;
-	case 0x40: // 2 lttpr repeaters
-		return 2;
-	case 0x20: // 3 lttpr repeaters
-		return 3;
-	case 0x10: // 4 lttpr repeaters
-		return 4;
-	case 0x08: // 5 lttpr repeaters
-		return 5;
-	case 0x04: // 6 lttpr repeaters
-		return 6;
-	case 0x02: // 7 lttpr repeaters
-		return 7;
-	case 0x01: // 8 lttpr repeaters
-		return 8;
-	default:
-		break;
-	}
-	return 0; // invalid value
-}
-
-static enum dc_status configure_lttpr_mode_transparent(struct dc_link *link)
-{
-	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
-
-	DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
-	return core_link_write_dpcd(link,
-			DP_PHY_REPEATER_MODE,
-			(uint8_t *)&repeater_mode,
-			sizeof(repeater_mode));
-}
-
-static enum dc_status configure_lttpr_mode_non_transparent(
-		struct dc_link *link,
-		const struct link_training_settings *lt_settings)
-{
-	/* aux timeout is already set to extended */
-	/* RESET/SET lttpr mode to enable non transparent mode */
-	uint8_t repeater_cnt;
-	uint32_t aux_interval_address;
-	uint8_t repeater_id;
-	enum dc_status result = DC_ERROR_UNEXPECTED;
-	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
-
-	enum dp_link_encoding encoding = dp_get_link_encoding_format(&lt_settings->link_settings);
-
-	if (encoding == DP_8b_10b_ENCODING) {
-		DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
-		result = core_link_write_dpcd(link,
-				DP_PHY_REPEATER_MODE,
-				(uint8_t *)&repeater_mode,
-				sizeof(repeater_mode));
-
-	}
-
-	if (result == DC_OK) {
-		link->dpcd_caps.lttpr_caps.mode = repeater_mode;
-	}
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
-
-		DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Non Transparent Mode\n", __func__);
-
-		repeater_mode = DP_PHY_REPEATER_MODE_NON_TRANSPARENT;
-		result = core_link_write_dpcd(link,
-				DP_PHY_REPEATER_MODE,
-				(uint8_t *)&repeater_mode,
-				sizeof(repeater_mode));
-
-		if (result == DC_OK) {
-			link->dpcd_caps.lttpr_caps.mode = repeater_mode;
-		}
-
-		if (encoding == DP_8b_10b_ENCODING) {
-			repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-			/* Driver does not need to train the first hop. Skip DPCD read and clear
-			 * AUX_RD_INTERVAL for DPTX-to-DPIA hop.
-			 */
-			if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
-				link->dpcd_caps.lttpr_caps.aux_rd_interval[--repeater_cnt] = 0;
-
-			for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {
-				aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +
-							((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1));
-				core_link_read_dpcd(
-					link,
-					aux_interval_address,
-					(uint8_t *)&link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1],
-					sizeof(link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1]));
-				link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1] &= 0x7F;
-			}
-		}
-	}
-
-	return result;
-}
-
-static void repeater_training_done(struct dc_link *link, uint32_t offset)
-{
-	union dpcd_training_pattern dpcd_pattern = {0};
-
-	const uint32_t dpcd_base_lt_offset =
-			DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-	/* Set training not in progress*/
-	dpcd_pattern.v1_4.TRAINING_PATTERN_SET = DPCD_TRAINING_PATTERN_VIDEOIDLE;
-
-	core_link_write_dpcd(
-		link,
-		dpcd_base_lt_offset,
-		&dpcd_pattern.raw,
-		1);
-
-	DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Id: %d 0x%X pattern = %x\n",
-		__func__,
-		offset,
-		dpcd_base_lt_offset,
-		dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
-}
-
-static void print_status_message(
-	struct dc_link *link,
-	const struct link_training_settings *lt_settings,
-	enum link_training_result status)
-{
-	char *link_rate = "Unknown";
-	char *lt_result = "Unknown";
-	char *lt_spread = "Disabled";
-
-	switch (lt_settings->link_settings.link_rate) {
-	case LINK_RATE_LOW:
-		link_rate = "RBR";
-		break;
-	case LINK_RATE_RATE_2:
-		link_rate = "R2";
-		break;
-	case LINK_RATE_RATE_3:
-		link_rate = "R3";
-		break;
-	case LINK_RATE_HIGH:
-		link_rate = "HBR";
-		break;
-	case LINK_RATE_RBR2:
-		link_rate = "RBR2";
-		break;
-	case LINK_RATE_RATE_6:
-		link_rate = "R6";
-		break;
-	case LINK_RATE_HIGH2:
-		link_rate = "HBR2";
-		break;
-	case LINK_RATE_HIGH3:
-		link_rate = "HBR3";
-		break;
-	case LINK_RATE_UHBR10:
-		link_rate = "UHBR10";
-		break;
-	case LINK_RATE_UHBR13_5:
-		link_rate = "UHBR13.5";
-		break;
-	case LINK_RATE_UHBR20:
-		link_rate = "UHBR20";
-		break;
-	default:
-		break;
-	}
-
-	switch (status) {
-	case LINK_TRAINING_SUCCESS:
-		lt_result = "pass";
-		break;
-	case LINK_TRAINING_CR_FAIL_LANE0:
-		lt_result = "CR failed lane0";
-		break;
-	case LINK_TRAINING_CR_FAIL_LANE1:
-		lt_result = "CR failed lane1";
-		break;
-	case LINK_TRAINING_CR_FAIL_LANE23:
-		lt_result = "CR failed lane23";
-		break;
-	case LINK_TRAINING_EQ_FAIL_CR:
-		lt_result = "CR failed in EQ";
-		break;
-	case LINK_TRAINING_EQ_FAIL_CR_PARTIAL:
-		lt_result = "CR failed in EQ partially";
-		break;
-	case LINK_TRAINING_EQ_FAIL_EQ:
-		lt_result = "EQ failed";
-		break;
-	case LINK_TRAINING_LQA_FAIL:
-		lt_result = "LQA failed";
-		break;
-	case LINK_TRAINING_LINK_LOSS:
-		lt_result = "Link loss";
-		break;
-	case DP_128b_132b_LT_FAILED:
-		lt_result = "LT_FAILED received";
-		break;
-	case DP_128b_132b_MAX_LOOP_COUNT_REACHED:
-		lt_result = "max loop count reached";
-		break;
-	case DP_128b_132b_CHANNEL_EQ_DONE_TIMEOUT:
-		lt_result = "channel EQ timeout";
-		break;
-	case DP_128b_132b_CDS_DONE_TIMEOUT:
-		lt_result = "CDS timeout";
-		break;
-	default:
-		break;
-	}
-
-	switch (lt_settings->link_settings.link_spread) {
-	case LINK_SPREAD_DISABLED:
-		lt_spread = "Disabled";
-		break;
-	case LINK_SPREAD_05_DOWNSPREAD_30KHZ:
-		lt_spread = "0.5% 30KHz";
-		break;
-	case LINK_SPREAD_05_DOWNSPREAD_33KHZ:
-		lt_spread = "0.5% 33KHz";
-		break;
-	default:
-		break;
-	}
-
-	/* Connectivity log: link training */
-
-	/* TODO - DP2.0 Log: add connectivity log for FFE PRESET */
-
-	CONN_MSG_LT(link, "%sx%d %s VS=%d, PE=%d, DS=%s",
-				link_rate,
-				lt_settings->link_settings.lane_count,
-				lt_result,
-				lt_settings->hw_lane_settings[0].VOLTAGE_SWING,
-				lt_settings->hw_lane_settings[0].PRE_EMPHASIS,
-				lt_spread);
-}
-
-void dc_link_dp_set_drive_settings(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings)
-{
-	/* program ASIC PHY settings*/
-	dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
-
-	dp_hw_to_dpcd_lane_settings(lt_settings,
-			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-
-	/* Notify DP sink the PHY settings from source */
-	dpcd_set_lane_settings(link, lt_settings, DPRX);
-}
-
-bool dc_link_dp_perform_link_training_skip_aux(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct dc_link_settings *link_setting)
-{
-	struct link_training_settings lt_settings = {0};
-
-	dp_decide_training_settings(
-			link,
-			link_setting,
-			&lt_settings);
-	override_training_settings(
-			link,
-			&link->preferred_training_settings,
-			&lt_settings);
-
-	/* 1. Perform_clock_recovery_sequence. */
-
-	/* transmit training pattern for clock recovery */
-	dp_set_hw_training_pattern(link, link_res, lt_settings.pattern_for_cr, DPRX);
-
-	/* call HWSS to set lane settings*/
-	dp_set_hw_lane_settings(link, link_res, &lt_settings, DPRX);
-
-	/* wait receiver to lock-on*/
-	dp_wait_for_training_aux_rd_interval(link, lt_settings.cr_pattern_time);
-
-	/* 2. Perform_channel_equalization_sequence. */
-
-	/* transmit training pattern for channel equalization. */
-	dp_set_hw_training_pattern(link, link_res, lt_settings.pattern_for_eq, DPRX);
-
-	/* call HWSS to set lane settings*/
-	dp_set_hw_lane_settings(link, link_res, &lt_settings, DPRX);
-
-	/* wait receiver to lock-on. */
-	dp_wait_for_training_aux_rd_interval(link, lt_settings.eq_pattern_time);
-
-	/* 3. Perform_link_training_int. */
-
-	/* Mainlink output idle pattern. */
-	dp_set_hw_test_pattern(link, link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0);
-
-	print_status_message(link, &lt_settings, LINK_TRAINING_SUCCESS);
-
-	return true;
-}
-
-enum dc_status dpcd_configure_lttpr_mode(struct dc_link *link, struct link_training_settings *lt_settings)
-{
-	enum dc_status status = DC_OK;
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_TRANSPARENT)
-		status = configure_lttpr_mode_transparent(link);
-
-	else if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
-		status = configure_lttpr_mode_non_transparent(link, lt_settings);
-
-	return status;
-}
-
-static void dpcd_exit_training_mode(struct dc_link *link, enum dp_link_encoding encoding)
-{
-	uint8_t sink_status = 0;
-	uint8_t i;
-
-	/* clear training pattern set */
-	dpcd_set_training_pattern(link, DP_TRAINING_PATTERN_VIDEOIDLE);
-
-	if (encoding == DP_128b_132b_ENCODING) {
-		/* poll for intra-hop disable */
-		for (i = 0; i < 10; i++) {
-			if ((core_link_read_dpcd(link, DP_SINK_STATUS, &sink_status, 1) == DC_OK) &&
-					(sink_status & DP_INTRA_HOP_AUX_REPLY_INDICATION) == 0)
-				break;
-			udelay(1000);
-		}
-	}
-}
-
-enum dc_status dpcd_configure_channel_coding(struct dc_link *link,
-		struct link_training_settings *lt_settings)
-{
-	enum dp_link_encoding encoding =
-			dp_get_link_encoding_format(
-					&lt_settings->link_settings);
-	enum dc_status status;
-
-	status = core_link_write_dpcd(
-			link,
-			DP_MAIN_LINK_CHANNEL_CODING_SET,
-			(uint8_t *) &encoding,
-			1);
-	DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X MAIN_LINK_CHANNEL_CODING_SET = %x\n",
-					__func__,
-					DP_MAIN_LINK_CHANNEL_CODING_SET,
-					encoding);
-
-	return status;
-}
-
-static void dpcd_128b_132b_get_aux_rd_interval(struct dc_link *link,
-		uint32_t *interval_in_us)
-{
-	union dp_128b_132b_training_aux_rd_interval dpcd_interval;
-	uint32_t interval_unit = 0;
-
-	dpcd_interval.raw = 0;
-	core_link_read_dpcd(link, DP_128b_132b_TRAINING_AUX_RD_INTERVAL,
-			&dpcd_interval.raw, sizeof(dpcd_interval.raw));
-	interval_unit = dpcd_interval.bits.UNIT ? 1 : 2; /* 0b = 2 ms, 1b = 1 ms */
-	/* (128b/132b_TRAINING_AUX_RD_INTERVAL value + 1) *
-	 * INTERVAL_UNIT. The maximum is 256 ms
-	 */
-	*interval_in_us = (dpcd_interval.bits.VALUE + 1) * interval_unit * 1000;
-}
-
-static enum link_training_result dp_perform_128b_132b_channel_eq_done_sequence(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	uint8_t loop_count;
-	uint32_t aux_rd_interval = 0;
-	uint32_t wait_time = 0;
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	enum dc_status status = DC_OK;
-	enum link_training_result result = LINK_TRAINING_SUCCESS;
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-	/* Transmit 128b/132b_TPS1 over Main-Link */
-	dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_cr, DPRX);
-	/* Set TRAINING_PATTERN_SET to 01h */
-	dpcd_set_training_pattern(link, lt_settings->pattern_for_cr);
-
-	/* Adjust TX_FFE_PRESET_VALUE and Transmit 128b/132b_TPS2 over Main-Link */
-	dpcd_128b_132b_get_aux_rd_interval(link, &aux_rd_interval);
-	dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
-			&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
-	dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-	dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
-	dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_eq, DPRX);
-
-	/* Set loop counter to start from 1 */
-	loop_count = 1;
-
-	/* Set TRAINING_PATTERN_SET to 02h and TX_FFE_PRESET_VALUE in one AUX transaction */
-	dpcd_set_lt_pattern_and_lane_settings(link, lt_settings,
-			lt_settings->pattern_for_eq, DPRX);
-
-	/* poll for channel EQ done */
-	while (result == LINK_TRAINING_SUCCESS) {
-		dp_wait_for_training_aux_rd_interval(link, aux_rd_interval);
-		wait_time += aux_rd_interval;
-		status = dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
-				&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-		dpcd_128b_132b_get_aux_rd_interval(link, &aux_rd_interval);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-		} else if (dp_is_ch_eq_done(lt_settings->link_settings.lane_count,
-				dpcd_lane_status)) {
-			/* pass */
-			break;
-		} else if (loop_count >= lt_settings->eq_loop_count_limit) {
-			result = DP_128b_132b_MAX_LOOP_COUNT_REACHED;
-		} else if (dpcd_lane_status_updated.bits.LT_FAILED_128b_132b) {
-			result = DP_128b_132b_LT_FAILED;
-		} else {
-			dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
-			dpcd_128b_132b_set_lane_settings(link, lt_settings);
-		}
-		loop_count++;
-	}
-
-	/* poll for EQ interlane align done */
-	while (result == LINK_TRAINING_SUCCESS) {
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-		} else if (dpcd_lane_status_updated.bits.EQ_INTERLANE_ALIGN_DONE_128b_132b) {
-			/* pass */
-			break;
-		} else if (wait_time >= lt_settings->eq_wait_time_limit) {
-			result = DP_128b_132b_CHANNEL_EQ_DONE_TIMEOUT;
-		} else if (dpcd_lane_status_updated.bits.LT_FAILED_128b_132b) {
-			result = DP_128b_132b_LT_FAILED;
-		} else {
-			dp_wait_for_training_aux_rd_interval(link,
-					lt_settings->eq_pattern_time);
-			wait_time += lt_settings->eq_pattern_time;
-			status = dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
-					&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
-		}
-	}
-
-	return result;
-}
-
-static enum link_training_result dp_perform_128b_132b_cds_done_sequence(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	/* Assumption: assume hardware has transmitted eq pattern */
-	enum dc_status status = DC_OK;
-	enum link_training_result result = LINK_TRAINING_SUCCESS;
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-	uint32_t wait_time = 0;
-
-	/* initiate CDS done sequence */
-	dpcd_set_training_pattern(link, lt_settings->pattern_for_cds);
-
-	/* poll for CDS interlane align done and symbol lock */
-	while (result  == LINK_TRAINING_SUCCESS) {
-		dp_wait_for_training_aux_rd_interval(link,
-				lt_settings->cds_pattern_time);
-		wait_time += lt_settings->cds_pattern_time;
-		status = dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
-						&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-		} else if (dp_is_symbol_locked(lt_settings->link_settings.lane_count, dpcd_lane_status) &&
-				dpcd_lane_status_updated.bits.CDS_INTERLANE_ALIGN_DONE_128b_132b) {
-			/* pass */
-			break;
-		} else if (dpcd_lane_status_updated.bits.LT_FAILED_128b_132b) {
-			result = DP_128b_132b_LT_FAILED;
-		} else if (wait_time >= lt_settings->cds_wait_time_limit) {
-			result = DP_128b_132b_CDS_DONE_TIMEOUT;
-		}
-	}
-
-	return result;
-}
-
-static enum link_training_result dp_perform_8b_10b_link_training(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	enum link_training_result status = LINK_TRAINING_SUCCESS;
-
-	uint8_t repeater_cnt;
-	uint8_t repeater_id;
-	uint8_t lane = 0;
-
-	if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
-		start_clock_recovery_pattern_early(link, link_res, lt_settings, DPRX);
-
-	/* 1. set link rate, lane count and spread. */
-	dpcd_set_link_settings(link, lt_settings);
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
-
-		/* 2. perform link training (set link training done
-		 *  to false is done as well)
-		 */
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-		for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
-				repeater_id--) {
-			status = perform_clock_recovery_sequence(link, link_res, lt_settings, repeater_id);
-
-			if (status != LINK_TRAINING_SUCCESS) {
-				repeater_training_done(link, repeater_id);
-				break;
-			}
-
-			status = perform_channel_equalization_sequence(link,
-					link_res,
-					lt_settings,
-					repeater_id);
-
-			repeater_training_done(link, repeater_id);
-
-			if (status != LINK_TRAINING_SUCCESS)
-				break;
-
-			for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-				lt_settings->dpcd_lane_settings[lane].raw = 0;
-				lt_settings->hw_lane_settings[lane].VOLTAGE_SWING = 0;
-				lt_settings->hw_lane_settings[lane].PRE_EMPHASIS = 0;
-			}
-		}
-	}
-
-	if (status == LINK_TRAINING_SUCCESS) {
-		status = perform_clock_recovery_sequence(link, link_res, lt_settings, DPRX);
-		if (status == LINK_TRAINING_SUCCESS) {
-			status = perform_channel_equalization_sequence(link,
-								       link_res,
-								       lt_settings,
-								       DPRX);
-		}
-	}
-
-	return status;
-}
-
-static enum link_training_result dp_perform_128b_132b_link_training(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	enum link_training_result result = LINK_TRAINING_SUCCESS;
-
-	/* TODO - DP2.0 Link: remove legacy_dp2_lt logic */
-	if (link->dc->debug.legacy_dp2_lt) {
-		struct link_training_settings legacy_settings;
-
-		decide_8b_10b_training_settings(link,
-				&lt_settings->link_settings,
-				&legacy_settings);
-		return dp_perform_8b_10b_link_training(link, link_res, &legacy_settings);
-	}
-
-	dpcd_set_link_settings(link, lt_settings);
-
-	if (result == LINK_TRAINING_SUCCESS)
-		result = dp_perform_128b_132b_channel_eq_done_sequence(link, link_res, lt_settings);
-
-	if (result == LINK_TRAINING_SUCCESS)
-		result = dp_perform_128b_132b_cds_done_sequence(link, link_res, lt_settings);
-
-	return result;
-}
-
-static enum link_training_result perform_fixed_vs_pe_nontransparent_training_sequence(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	enum link_training_result status = LINK_TRAINING_SUCCESS;
-	uint8_t lane = 0;
-	uint8_t toggle_rate = 0x6;
-	uint8_t target_rate = 0x6;
-	bool apply_toggle_rate_wa = false;
-	uint8_t repeater_cnt;
-	uint8_t repeater_id;
-
-	/* Fixed VS/PE specific: Force CR AUX RD Interval to at least 16ms */
-	if (lt_settings->cr_pattern_time < 16000)
-		lt_settings->cr_pattern_time = 16000;
-
-	/* Fixed VS/PE specific: Toggle link rate */
-	apply_toggle_rate_wa = (link->vendor_specific_lttpr_link_rate_wa == target_rate);
-	target_rate = get_dpcd_link_rate(&lt_settings->link_settings);
-	toggle_rate = (target_rate == 0x6) ? 0xA : 0x6;
-
-	if (apply_toggle_rate_wa)
-		lt_settings->link_settings.link_rate = toggle_rate;
-
-	if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
-		start_clock_recovery_pattern_early(link, link_res, lt_settings, DPRX);
-
-	/* 1. set link rate, lane count and spread. */
-	dpcd_set_link_settings(link, lt_settings);
-
-	/* Fixed VS/PE specific: Toggle link rate back*/
-	if (apply_toggle_rate_wa) {
-		core_link_write_dpcd(
-				link,
-				DP_LINK_BW_SET,
-				&target_rate,
-				1);
-	}
-
-	link->vendor_specific_lttpr_link_rate_wa = target_rate;
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
-
-		/* 2. perform link training (set link training done
-		 *  to false is done as well)
-		 */
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-		for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
-				repeater_id--) {
-			status = perform_clock_recovery_sequence(link, link_res, lt_settings, repeater_id);
-
-			if (status != LINK_TRAINING_SUCCESS) {
-				repeater_training_done(link, repeater_id);
-				break;
-			}
-
-			status = perform_channel_equalization_sequence(link,
-					link_res,
-					lt_settings,
-					repeater_id);
-
-			repeater_training_done(link, repeater_id);
-
-			if (status != LINK_TRAINING_SUCCESS)
-				break;
-
-			for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-				lt_settings->dpcd_lane_settings[lane].raw = 0;
-				lt_settings->hw_lane_settings[lane].VOLTAGE_SWING = 0;
-				lt_settings->hw_lane_settings[lane].PRE_EMPHASIS = 0;
-			}
-		}
-	}
-
-	if (status == LINK_TRAINING_SUCCESS) {
-		status = perform_clock_recovery_sequence(link, link_res, lt_settings, DPRX);
-		if (status == LINK_TRAINING_SUCCESS) {
-			status = perform_channel_equalization_sequence(link,
-								       link_res,
-								       lt_settings,
-								       DPRX);
-		}
-	}
-
-	return status;
-}
-
-static enum link_training_result dp_perform_fixed_vs_pe_training_sequence(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings)
-{
-	const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF};
-	const uint8_t offset = dp_convert_to_count(
-			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-	const uint8_t vendor_lttpr_write_data_intercept_en[4] = {0x1, 0x55, 0x63, 0x0};
-	const uint8_t vendor_lttpr_write_data_intercept_dis[4] = {0x1, 0x55, 0x63, 0x68};
-	uint32_t pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa;
-	uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0};
-	uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0};
-	uint32_t vendor_lttpr_write_address = 0xF004F;
-	enum link_training_result status = LINK_TRAINING_SUCCESS;
-	uint8_t lane = 0;
-	union down_spread_ctrl downspread = {0};
-	union lane_count_set lane_count_set = {0};
-	uint8_t toggle_rate;
-	uint8_t rate;
-
-	/* Only 8b/10b is supported */
-	ASSERT(dp_get_link_encoding_format(&lt_settings->link_settings) ==
-			DP_8b_10b_ENCODING);
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
-		status = perform_fixed_vs_pe_nontransparent_training_sequence(link, link_res, lt_settings);
-		return status;
-	}
-
-	if (offset != 0xFF) {
-		vendor_lttpr_write_address +=
-				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-
-		/* Certain display and cable configuration require extra delay */
-		if (offset > 2)
-			pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa * 2;
-	}
-
-	/* Vendor specific: Reset lane settings */
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_reset[0],
-			sizeof(vendor_lttpr_write_data_reset));
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_vs[0],
-			sizeof(vendor_lttpr_write_data_vs));
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_pe[0],
-			sizeof(vendor_lttpr_write_data_pe));
-
-	/* Vendor specific: Enable intercept */
-	core_link_write_dpcd(
-			link,
-			vendor_lttpr_write_address,
-			&vendor_lttpr_write_data_intercept_en[0],
-			sizeof(vendor_lttpr_write_data_intercept_en));
-
-	/* 1. set link rate, lane count and spread. */
-
-	downspread.raw = (uint8_t)(lt_settings->link_settings.link_spread);
-
-	lane_count_set.bits.LANE_COUNT_SET =
-	lt_settings->link_settings.lane_count;
-
-	lane_count_set.bits.ENHANCED_FRAMING = lt_settings->enhanced_framing;
-	lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED = 0;
-
-
-	if (lt_settings->pattern_for_eq < DP_TRAINING_PATTERN_SEQUENCE_4) {
-		lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED =
-				link->dpcd_caps.max_ln_count.bits.POST_LT_ADJ_REQ_SUPPORTED;
-	}
-
-	core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
-		&downspread.raw, sizeof(downspread));
-
-	core_link_write_dpcd(link, DP_LANE_COUNT_SET,
-		&lane_count_set.raw, 1);
-
-	rate = get_dpcd_link_rate(&lt_settings->link_settings);
-
-	/* Vendor specific: Toggle link rate */
-	toggle_rate = (rate == 0x6) ? 0xA : 0x6;
-
-	if (link->vendor_specific_lttpr_link_rate_wa == rate) {
-		core_link_write_dpcd(
-				link,
-				DP_LINK_BW_SET,
-				&toggle_rate,
-				1);
-	}
-
-	link->vendor_specific_lttpr_link_rate_wa = rate;
-
-	core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
-
-	DC_LOG_HW_LINK_TRAINING("%s\n %x rate = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
-		__func__,
-		DP_LINK_BW_SET,
-		lt_settings->link_settings.link_rate,
-		DP_LANE_COUNT_SET,
-		lt_settings->link_settings.lane_count,
-		lt_settings->enhanced_framing,
-		DP_DOWNSPREAD_CTRL,
-		lt_settings->link_settings.link_spread);
-
-	/* 2. Perform link training */
-
-	/* Perform Clock Recovery Sequence */
-	if (status == LINK_TRAINING_SUCCESS) {
-		const uint8_t max_vendor_dpcd_retries = 10;
-		uint32_t retries_cr;
-		uint32_t retry_count;
-		uint32_t wait_time_microsec;
-		enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-		union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX];
-		union lane_align_status_updated dpcd_lane_status_updated;
-		union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-		enum dc_status dpcd_status = DC_OK;
-		uint8_t i = 0;
-
-		retries_cr = 0;
-		retry_count = 0;
-
-		memset(&dpcd_lane_status, '\0', sizeof(dpcd_lane_status));
-		memset(&dpcd_lane_status_updated, '\0',
-		sizeof(dpcd_lane_status_updated));
-
-		while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
-			(retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
-
-
-			/* 1. call HWSS to set lane settings */
-			dp_set_hw_lane_settings(
-					link,
-					link_res,
-					lt_settings,
-					0);
-
-			/* 2. update DPCD of the receiver */
-			if (!retry_count) {
-				/* EPR #361076 - write as a 5-byte burst,
-				 * but only for the 1-st iteration.
-				 */
-				dpcd_set_lt_pattern_and_lane_settings(
-						link,
-						lt_settings,
-						lt_settings->pattern_for_cr,
-						0);
-				/* Vendor specific: Disable intercept */
-				for (i = 0; i < max_vendor_dpcd_retries; i++) {
-					msleep(pre_disable_intercept_delay_ms);
-					dpcd_status = core_link_write_dpcd(
-							link,
-							vendor_lttpr_write_address,
-							&vendor_lttpr_write_data_intercept_dis[0],
-							sizeof(vendor_lttpr_write_data_intercept_dis));
-
-					if (dpcd_status == DC_OK)
-						break;
-
-					core_link_write_dpcd(
-							link,
-							vendor_lttpr_write_address,
-							&vendor_lttpr_write_data_intercept_en[0],
-							sizeof(vendor_lttpr_write_data_intercept_en));
-				}
-			} else {
-				vendor_lttpr_write_data_vs[3] = 0;
-				vendor_lttpr_write_data_pe[3] = 0;
-
-				for (lane = 0; lane < lane_count; lane++) {
-					vendor_lttpr_write_data_vs[3] |=
-							lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET << (2 * lane);
-					vendor_lttpr_write_data_pe[3] |=
-							lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET << (2 * lane);
-				}
-
-				/* Vendor specific: Update VS and PE to DPRX requested value */
-				core_link_write_dpcd(
-						link,
-						vendor_lttpr_write_address,
-						&vendor_lttpr_write_data_vs[0],
-						sizeof(vendor_lttpr_write_data_vs));
-				core_link_write_dpcd(
-						link,
-						vendor_lttpr_write_address,
-						&vendor_lttpr_write_data_pe[0],
-						sizeof(vendor_lttpr_write_data_pe));
-
-				dpcd_set_lane_settings(
-						link,
-						lt_settings,
-						0);
-			}
-
-			/* 3. wait receiver to lock-on*/
-			wait_time_microsec = lt_settings->cr_pattern_time;
-
-			dp_wait_for_training_aux_rd_interval(
-					link,
-					wait_time_microsec);
-
-			/* 4. Read lane status and requested drive
-			 * settings as set by the sink
-			 */
-			dp_get_lane_status_and_lane_adjust(
-					link,
-					lt_settings,
-					dpcd_lane_status,
-					&dpcd_lane_status_updated,
-					dpcd_lane_adjust,
-					0);
-
-			/* 5. check CR done*/
-			if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
-				status = LINK_TRAINING_SUCCESS;
-				break;
-			}
-
-			/* 6. max VS reached*/
-			if (dp_is_max_vs_reached(lt_settings))
-				break;
-
-			/* 7. same lane settings */
-			/* Note: settings are the same for all lanes,
-			 * so comparing first lane is sufficient
-			 */
-			if (lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
-					dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
-				retries_cr++;
-			else
-				retries_cr = 0;
-
-			/* 8. update VS/PE/PC2 in lt_settings*/
-			dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-					lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-			retry_count++;
-		}
-
-		if (retry_count >= LINK_TRAINING_MAX_CR_RETRY) {
-			ASSERT(0);
-			DC_LOG_ERROR("%s: Link Training Error, could not get CR after %d tries. Possibly voltage swing issue",
-				__func__,
-				LINK_TRAINING_MAX_CR_RETRY);
-
-		}
-
-		status = dp_get_cr_failure(lane_count, dpcd_lane_status);
-	}
-
-	/* Perform Channel EQ Sequence */
-	if (status == LINK_TRAINING_SUCCESS) {
-		enum dc_dp_training_pattern tr_pattern;
-		uint32_t retries_ch_eq;
-		uint32_t wait_time_microsec;
-		enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-		union lane_align_status_updated dpcd_lane_status_updated = {0};
-		union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-		union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-		/* Note: also check that TPS4 is a supported feature*/
-		tr_pattern = lt_settings->pattern_for_eq;
-
-		dp_set_hw_training_pattern(link, link_res, tr_pattern, 0);
-
-		status = LINK_TRAINING_EQ_FAIL_EQ;
-
-		for (retries_ch_eq = 0; retries_ch_eq <= LINK_TRAINING_MAX_RETRY_COUNT;
-			retries_ch_eq++) {
-
-			dp_set_hw_lane_settings(link, link_res, lt_settings, 0);
-
-			vendor_lttpr_write_data_vs[3] = 0;
-			vendor_lttpr_write_data_pe[3] = 0;
-
-			for (lane = 0; lane < lane_count; lane++) {
-				vendor_lttpr_write_data_vs[3] |=
-						lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET << (2 * lane);
-				vendor_lttpr_write_data_pe[3] |=
-						lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET << (2 * lane);
-			}
-
-			/* Vendor specific: Update VS and PE to DPRX requested value */
-			core_link_write_dpcd(
-					link,
-					vendor_lttpr_write_address,
-					&vendor_lttpr_write_data_vs[0],
-					sizeof(vendor_lttpr_write_data_vs));
-			core_link_write_dpcd(
-					link,
-					vendor_lttpr_write_address,
-					&vendor_lttpr_write_data_pe[0],
-					sizeof(vendor_lttpr_write_data_pe));
-
-			/* 2. update DPCD*/
-			if (!retries_ch_eq)
-				/* EPR #361076 - write as a 5-byte burst,
-				 * but only for the 1-st iteration
-				 */
-
-				dpcd_set_lt_pattern_and_lane_settings(
-					link,
-					lt_settings,
-					tr_pattern, 0);
-			else
-				dpcd_set_lane_settings(link, lt_settings, 0);
-
-			/* 3. wait for receiver to lock-on*/
-			wait_time_microsec = lt_settings->eq_pattern_time;
-
-			dp_wait_for_training_aux_rd_interval(
-					link,
-					wait_time_microsec);
-
-			/* 4. Read lane status and requested
-			 * drive settings as set by the sink
-			 */
-			dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				0);
-
-			/* 5. check CR done*/
-			if (!dp_is_cr_done(lane_count, dpcd_lane_status)) {
-				status = LINK_TRAINING_EQ_FAIL_CR;
-				break;
-			}
-
-			/* 6. check CHEQ done*/
-			if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
-					dp_is_symbol_locked(lane_count, dpcd_lane_status) &&
-					dp_is_interlane_aligned(dpcd_lane_status_updated)) {
-				status = LINK_TRAINING_SUCCESS;
-				break;
-			}
-
-			/* 7. update VS/PE/PC2 in lt_settings*/
-			dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-					lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-		}
-	}
-
-	return status;
-}
-
-
-enum link_training_result dc_link_dp_perform_link_training(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct dc_link_settings *link_settings,
-	bool skip_video_pattern)
-{
-	enum link_training_result status = LINK_TRAINING_SUCCESS;
-	struct link_training_settings lt_settings = {0};
-	enum dp_link_encoding encoding =
-			dp_get_link_encoding_format(link_settings);
-
-	/* decide training settings */
-	dp_decide_training_settings(
-			link,
-			link_settings,
-			&lt_settings);
-
-	override_training_settings(
-			link,
-			&link->preferred_training_settings,
-			&lt_settings);
-
-	/* reset previous training states */
-	dpcd_exit_training_mode(link, encoding);
-
-	/* configure link prior to entering training mode */
-	dpcd_configure_lttpr_mode(link, &lt_settings);
-	dp_set_fec_ready(link, link_res, lt_settings.should_set_fec_ready);
-	dpcd_configure_channel_coding(link, &lt_settings);
-
-	/* enter training mode:
-	 * Per DP specs starting from here, DPTX device shall not issue
-	 * Non-LT AUX transactions inside training mode.
-	 */
-	if (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN && encoding == DP_8b_10b_ENCODING)
-		status = dp_perform_fixed_vs_pe_training_sequence(link, link_res, &lt_settings);
-	else if (encoding == DP_8b_10b_ENCODING)
-		status = dp_perform_8b_10b_link_training(link, link_res, &lt_settings);
-	else if (encoding == DP_128b_132b_ENCODING)
-		status = dp_perform_128b_132b_link_training(link, link_res, &lt_settings);
-	else
-		ASSERT(0);
-
-	/* exit training mode */
-	dpcd_exit_training_mode(link, encoding);
-
-	/* switch to video idle */
-	if ((status == LINK_TRAINING_SUCCESS) || !skip_video_pattern)
-		status = dp_transition_to_video_idle(link,
-				link_res,
-				&lt_settings,
-				status);
-
-	/* dump debug data */
-	print_status_message(link, &lt_settings, status);
-	if (status != LINK_TRAINING_SUCCESS)
-		link->ctx->dc->debug_data.ltFailCount++;
-	return status;
-}
-
-bool perform_link_training_with_retries(
-	const struct dc_link_settings *link_setting,
-	bool skip_video_pattern,
-	int attempts,
-	struct pipe_ctx *pipe_ctx,
-	enum signal_type signal,
-	bool do_fallback)
-{
-	int j;
-	uint8_t delay_between_attempts = LINK_TRAINING_RETRY_DELAY;
-	struct dc_stream_state *stream = pipe_ctx->stream;
-	struct dc_link *link = stream->link;
-	enum dp_panel_mode panel_mode = dp_get_panel_mode(link);
-	enum link_training_result status = LINK_TRAINING_CR_FAIL_LANE0;
-	struct dc_link_settings cur_link_settings = *link_setting;
-	struct dc_link_settings max_link_settings = *link_setting;
-	const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
-	int fail_count = 0;
-	bool is_link_bw_low = false; /* link bandwidth < stream bandwidth */
-	bool is_link_bw_min = /* RBR x 1 */
-		(cur_link_settings.link_rate <= LINK_RATE_LOW) &&
-		(cur_link_settings.lane_count <= LANE_COUNT_ONE);
-
-	dp_trace_commit_lt_init(link);
-
-	if (dp_get_link_encoding_format(&cur_link_settings) == DP_8b_10b_ENCODING)
-		/* We need to do this before the link training to ensure the idle
-		 * pattern in SST mode will be sent right after the link training
-		 */
-		link_hwss->setup_stream_encoder(pipe_ctx);
-
-	dp_trace_set_lt_start_timestamp(link, false);
-	j = 0;
-	while (j < attempts && fail_count < (attempts * 10)) {
-
-		DC_LOG_HW_LINK_TRAINING("%s: Beginning link(%d) training attempt %u of %d @ rate(%d) x lane(%d)\n",
-			__func__, link->link_index, (unsigned int)j + 1, attempts, cur_link_settings.link_rate,
-			cur_link_settings.lane_count);
+#include "resource.h"
 
-		dp_enable_link_phy(
-			link,
-			&pipe_ctx->link_res,
-			signal,
-			pipe_ctx->clock_source->id,
-			&cur_link_settings);
+#include "inc/core_types.h"
+#include "link_hwss.h"
+#include "link/link_ddc.h"
+#include "core_status.h"
+#include "dpcd_defs.h"
 
-		if (stream->sink_patches.dppowerup_delay > 0) {
-			int delay_dp_power_up_in_ms = stream->sink_patches.dppowerup_delay;
+#include "dc_dmub_srv.h"
+#include "dce/dmub_hw_lock_mgr.h"
+#include "link/link_dp_dpia.h"
+#include "inc/link_enc_cfg.h"
+#include "clk_mgr.h"
+#include "link/link_dp_trace.h"
+#include "link/link_dp_training.h"
+#include "link/link_dp_training_fixed_vs_pe_retimer.h"
+#include "link/link_dp_training_dpia.h"
+#include "link/link_dp_training_auxless.h"
+#include "resource.h"
+#define DC_LOGGER \
+	link->ctx->logger
 
-			msleep(delay_dp_power_up_in_ms);
-		}
+#define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
+#include "link/link_dpcd.h"
 
-#ifdef CONFIG_DRM_AMD_DC_HDCP
-		if (panel_mode == DP_PANEL_MODE_EDP) {
-			struct cp_psp *cp_psp = &stream->ctx->cp_psp;
-
-			if (cp_psp && cp_psp->funcs.enable_assr)
-				/* ASSR is bound to fail with unsigned PSP
-				 * verstage used during devlopment phase.
-				 * Report and continue with eDP panel mode to
-				 * perform eDP link training with right settings
-				 */
-				cp_psp->funcs.enable_assr(cp_psp->handle, link);
-		}
+#ifndef MAX
+#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#endif
+#ifndef MIN
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
 #endif
 
-		dp_set_panel_mode(link, panel_mode);
+struct dp_lt_fallback_entry {
+	enum dc_lane_count lane_count;
+	enum dc_link_rate link_rate;
+};
 
-		if (link->aux_access_disabled) {
-			dc_link_dp_perform_link_training_skip_aux(link, &pipe_ctx->link_res, &cur_link_settings);
-			return true;
-		} else {
-			/** @todo Consolidate USB4 DP and DPx.x training. */
-			if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) {
-				status = dc_link_dpia_perform_link_training(link,
-						&pipe_ctx->link_res,
-						&cur_link_settings,
-						skip_video_pattern);
-
-				/* Transmit idle pattern once training successful. */
-				if (status == LINK_TRAINING_SUCCESS && !is_link_bw_low) {
-					dp_set_hw_test_pattern(link, &pipe_ctx->link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0);
-					/* Update verified link settings to current one
-					 * Because DPIA LT might fallback to lower link setting.
-					 */
-					if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
-						link->verified_link_cap.link_rate = link->cur_link_settings.link_rate;
-						link->verified_link_cap.lane_count = link->cur_link_settings.lane_count;
-						dm_helpers_dp_mst_update_branch_bandwidth(link->ctx, link);
-					}
-				}
-			} else {
-				status = dc_link_dp_perform_link_training(link,
-						&pipe_ctx->link_res,
-						&cur_link_settings,
-						skip_video_pattern);
-			}
+static const struct dp_lt_fallback_entry dp_lt_fallbacks[] = {
+		/* This link training fallback array is ordered by
+		 * link bandwidth from highest to lowest.
+		 * DP specs makes it a normative policy to always
+		 * choose the next highest link bandwidth during
+		 * link training fallback.
+		 */
+		{LANE_COUNT_FOUR, LINK_RATE_UHBR20},
+		{LANE_COUNT_FOUR, LINK_RATE_UHBR13_5},
+		{LANE_COUNT_TWO, LINK_RATE_UHBR20},
+		{LANE_COUNT_FOUR, LINK_RATE_UHBR10},
+		{LANE_COUNT_TWO, LINK_RATE_UHBR13_5},
+		{LANE_COUNT_FOUR, LINK_RATE_HIGH3},
+		{LANE_COUNT_ONE, LINK_RATE_UHBR20},
+		{LANE_COUNT_TWO, LINK_RATE_UHBR10},
+		{LANE_COUNT_FOUR, LINK_RATE_HIGH2},
+		{LANE_COUNT_ONE, LINK_RATE_UHBR13_5},
+		{LANE_COUNT_TWO, LINK_RATE_HIGH3},
+		{LANE_COUNT_ONE, LINK_RATE_UHBR10},
+		{LANE_COUNT_TWO, LINK_RATE_HIGH2},
+		{LANE_COUNT_FOUR, LINK_RATE_HIGH},
+		{LANE_COUNT_ONE, LINK_RATE_HIGH3},
+		{LANE_COUNT_FOUR, LINK_RATE_LOW},
+		{LANE_COUNT_ONE, LINK_RATE_HIGH2},
+		{LANE_COUNT_TWO, LINK_RATE_HIGH},
+		{LANE_COUNT_TWO, LINK_RATE_LOW},
+		{LANE_COUNT_ONE, LINK_RATE_HIGH},
+		{LANE_COUNT_ONE, LINK_RATE_LOW},
+};
 
-			dp_trace_lt_total_count_increment(link, false);
-			dp_trace_lt_result_update(link, status, false);
-			dp_trace_set_lt_end_timestamp(link, false);
-			if (status == LINK_TRAINING_SUCCESS && !is_link_bw_low)
-				return true;
-		}
+static const struct dc_link_settings fail_safe_link_settings = {
+		.lane_count = LANE_COUNT_ONE,
+		.link_rate = LINK_RATE_LOW,
+		.link_spread = LINK_SPREAD_DISABLED,
+};
 
-		fail_count++;
-		dp_trace_lt_fail_count_update(link, fail_count, false);
-		if (link->ep_type == DISPLAY_ENDPOINT_PHY) {
-			/* latest link training still fail or link training is aborted
-			 * skip delay and keep PHY on
-			 */
-			if (j == (attempts - 1) || (status == LINK_TRAINING_ABORT))
-				break;
-		}
+static uint8_t get_nibble_at_index(const uint8_t *buf,
+	uint32_t index)
+{
+	uint8_t nibble;
+	nibble = buf[index / 2];
 
-		DC_LOG_WARNING("%s: Link(%d) training attempt %u of %d failed @ rate(%d) x lane(%d) : fail reason:(%d)\n",
-			__func__, link->link_index, (unsigned int)j + 1, attempts, cur_link_settings.link_rate,
-			cur_link_settings.lane_count, status);
+	if (index % 2)
+		nibble >>= 4;
+	else
+		nibble &= 0x0F;
 
-		dp_disable_link_phy(link, &pipe_ctx->link_res, signal);
+	return nibble;
+}
 
-		/* Abort link training if failure due to sink being unplugged. */
-		if (status == LINK_TRAINING_ABORT) {
-			enum dc_connection_type type = dc_connection_none;
+uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count)
+{
+	switch (lttpr_repeater_count) {
+	case 0x80: // 1 lttpr repeater
+		return 1;
+	case 0x40: // 2 lttpr repeaters
+		return 2;
+	case 0x20: // 3 lttpr repeaters
+		return 3;
+	case 0x10: // 4 lttpr repeaters
+		return 4;
+	case 0x08: // 5 lttpr repeaters
+		return 5;
+	case 0x04: // 6 lttpr repeaters
+		return 6;
+	case 0x02: // 7 lttpr repeaters
+		return 7;
+	case 0x01: // 8 lttpr repeaters
+		return 8;
+	default:
+		break;
+	}
+	return 0; // invalid value
+}
 
-			dc_link_detect_sink(link, &type);
-			if (type == dc_connection_none) {
-				DC_LOG_HW_LINK_TRAINING("%s: Aborting training because sink unplugged\n", __func__);
-				break;
-			}
-		}
+void dc_link_dp_set_drive_settings(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings)
+{
+	/* program ASIC PHY settings*/
+	dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
 
-		/* Try to train again at original settings if:
-		 * - not falling back between training attempts;
-		 * - aborted previous attempt due to reasons other than sink unplug;
-		 * - successfully trained but at a link rate lower than that required by stream;
-		 * - reached minimum link bandwidth.
-		 */
-		if (!do_fallback || (status == LINK_TRAINING_ABORT) ||
-				(status == LINK_TRAINING_SUCCESS && is_link_bw_low) ||
-				is_link_bw_min) {
-			j++;
-			cur_link_settings = *link_setting;
-			delay_between_attempts += LINK_TRAINING_RETRY_DELAY;
-			is_link_bw_low = false;
-			is_link_bw_min = (cur_link_settings.link_rate <= LINK_RATE_LOW) &&
-				(cur_link_settings.lane_count <= LANE_COUNT_ONE);
-
-		} else if (do_fallback) { /* Try training at lower link bandwidth if doing fallback. */
-			uint32_t req_bw;
-			uint32_t link_bw;
-
-			decide_fallback_link_setting(link, &max_link_settings,
-					&cur_link_settings, status);
-			/* Fail link training if reduced link bandwidth no longer meets
-			 * stream requirements.
-			 */
-			req_bw = dc_bandwidth_in_kbps_from_timing(&stream->timing);
-			link_bw = dc_link_bandwidth_kbps(link, &cur_link_settings);
-			is_link_bw_low = (req_bw > link_bw);
-			is_link_bw_min = ((cur_link_settings.link_rate <= LINK_RATE_LOW) &&
-				(cur_link_settings.lane_count <= LANE_COUNT_ONE));
-			if (is_link_bw_low)
-				DC_LOG_WARNING(
-					"%s: Link(%d) bandwidth too low after fallback req_bw(%d) > link_bw(%d)\n",
-					__func__, link->link_index, req_bw, link_bw);
-		}
+	dp_hw_to_dpcd_lane_settings(lt_settings,
+			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
 
-		msleep(delay_between_attempts);
-	}
-	return false;
+	/* Notify DP sink the PHY settings from source */
+	dpcd_set_lane_settings(link, lt_settings, DPRX);
 }
 
 static enum clock_source_id get_clock_source_id(struct dc_link *link)
@@ -2879,136 +172,6 @@ static enum clock_source_id get_clock_source_id(struct dc_link *link)
 	return dp_cs_id;
 }
 
-static void set_dp_mst_mode(struct dc_link *link, const struct link_resource *link_res,
-		bool mst_enable)
-{
-	if (mst_enable == false &&
-		link->type == dc_connection_mst_branch) {
-		/* Disable MST on link. Use only local sink. */
-		dp_disable_link_phy_mst(link, link_res, link->connector_signal);
-
-		link->type = dc_connection_single;
-		link->local_sink = link->remote_sinks[0];
-		link->local_sink->sink_signal = SIGNAL_TYPE_DISPLAY_PORT;
-		dc_sink_retain(link->local_sink);
-		dm_helpers_dp_mst_stop_top_mgr(link->ctx, link);
-	} else if (mst_enable == true &&
-			link->type == dc_connection_single &&
-			link->remote_sinks[0] != NULL) {
-		/* Re-enable MST on link. */
-		dp_disable_link_phy(link, link_res, link->connector_signal);
-		dp_enable_mst_on_sink(link, true);
-
-		link->type = dc_connection_mst_branch;
-		link->local_sink->sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST;
-	}
-}
-
-bool dc_link_dp_sync_lt_begin(struct dc_link *link)
-{
-	/* Begin Sync LT. During this time,
-	 * DPCD:600h must not be powered down.
-	 */
-	link->sync_lt_in_progress = true;
-
-	/*Clear any existing preferred settings.*/
-	memset(&link->preferred_training_settings, 0,
-		sizeof(struct dc_link_training_overrides));
-	memset(&link->preferred_link_setting, 0,
-		sizeof(struct dc_link_settings));
-
-	return true;
-}
-
-enum link_training_result dc_link_dp_sync_lt_attempt(
-    struct dc_link *link,
-    const struct link_resource *link_res,
-    struct dc_link_settings *link_settings,
-    struct dc_link_training_overrides *lt_overrides)
-{
-	struct link_training_settings lt_settings = {0};
-	enum link_training_result lt_status = LINK_TRAINING_SUCCESS;
-	enum dp_panel_mode panel_mode = DP_PANEL_MODE_DEFAULT;
-	enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL;
-	bool fec_enable = false;
-
-	dp_decide_training_settings(
-			link,
-			link_settings,
-			&lt_settings);
-	override_training_settings(
-			link,
-			lt_overrides,
-			&lt_settings);
-	/* Setup MST Mode */
-	if (lt_overrides->mst_enable)
-		set_dp_mst_mode(link, link_res, *lt_overrides->mst_enable);
-
-	/* Disable link */
-	dp_disable_link_phy(link, link_res, link->connector_signal);
-
-	/* Enable link */
-	dp_cs_id = get_clock_source_id(link);
-	dp_enable_link_phy(link, link_res, link->connector_signal,
-		dp_cs_id, link_settings);
-
-	/* Set FEC enable */
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING) {
-		fec_enable = lt_overrides->fec_enable && *lt_overrides->fec_enable;
-		dp_set_fec_ready(link, NULL, fec_enable);
-	}
-
-	if (lt_overrides->alternate_scrambler_reset) {
-		if (*lt_overrides->alternate_scrambler_reset)
-			panel_mode = DP_PANEL_MODE_EDP;
-		else
-			panel_mode = DP_PANEL_MODE_DEFAULT;
-	} else
-		panel_mode = dp_get_panel_mode(link);
-
-	dp_set_panel_mode(link, panel_mode);
-
-	/* Attempt to train with given link training settings */
-	if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
-		start_clock_recovery_pattern_early(link, link_res, &lt_settings, DPRX);
-
-	/* Set link rate, lane count and spread. */
-	dpcd_set_link_settings(link, &lt_settings);
-
-	/* 2. perform link training (set link training done
-	 *  to false is done as well)
-	 */
-	lt_status = perform_clock_recovery_sequence(link, link_res, &lt_settings, DPRX);
-	if (lt_status == LINK_TRAINING_SUCCESS) {
-		lt_status = perform_channel_equalization_sequence(link,
-						link_res,
-						&lt_settings,
-						DPRX);
-	}
-
-	/* 3. Sync LT must skip TRAINING_PATTERN_SET:0 (video pattern)*/
-	/* 4. print status message*/
-	print_status_message(link, &lt_settings, lt_status);
-
-	return lt_status;
-}
-
-bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down)
-{
-	/* If input parameter is set, shut down phy.
-	 * Still shouldn't turn off dp_receiver (DPCD:600h)
-	 */
-	if (link_down == true) {
-		struct dc_link_settings link_settings = link->cur_link_settings;
-		dp_disable_link_phy(link, NULL, link->connector_signal);
-		if (dp_get_link_encoding_format(&link_settings) == DP_8b_10b_ENCODING)
-			dp_set_fec_ready(link, NULL, false);
-	}
-
-	link->sync_lt_in_progress = false;
-	return true;
-}
-
 static enum dc_link_rate get_lttpr_max_link_rate(struct dc_link *link)
 {
 	enum dc_link_rate lttpr_max_link_rate = link->dpcd_caps.lttpr_caps.max_link_rate;
@@ -3060,7 +223,6 @@ bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_
 	return false;
 }
 
-
 struct dc_link_settings dp_get_max_link_cap(struct dc_link *link)
 {
 	struct dc_link_settings max_link_cap = {0};
@@ -3285,7 +447,7 @@ static bool dp_verify_link_cap(
 				dp_cs_id,
 				&cur_link_settings);
 
-		status = dc_link_dp_perform_link_training(
+		status = dp_perform_link_training(
 				link,
 				&link_res,
 				&cur_link_settings,
@@ -3540,7 +702,7 @@ static bool decide_fallback_link_setting_max_bw_policy(
  *			false - has reached minimum setting
  *					and no further fallback could be done
  */
-static bool decide_fallback_link_setting(
+bool decide_fallback_link_setting(
 		struct dc_link *link,
 		struct dc_link_settings *max,
 		struct dc_link_settings *cur,
@@ -3548,8 +710,8 @@ static bool decide_fallback_link_setting(
 {
 	if (dp_get_link_encoding_format(max) == DP_128b_132b_ENCODING ||
 			link->dc->debug.force_dp2_lt_fallback_method)
-		return decide_fallback_link_setting_max_bw_policy(link, max, cur,
-				training_result);
+		return decide_fallback_link_setting_max_bw_policy(link, max,
+				cur, training_result);
 
 	switch (training_result) {
 	case LINK_TRAINING_CR_FAIL_LANE0:
@@ -4139,7 +1301,7 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link)
 	/* prepare link training settings */
 	link_training_settings.link_settings = link->cur_link_settings;
 
-	link_training_settings.lttpr_mode = dp_decide_lttpr_mode(link, &link->cur_link_settings);
+	link_training_settings.lttpr_mode = dc_link_decide_lttpr_mode(link, &link->cur_link_settings);
 
 	if ((link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
 			link_training_settings.lttpr_mode == LTTPR_MODE_TRANSPARENT)
@@ -4782,8 +1944,6 @@ static int translate_dpcd_max_bpc(enum dpcd_downstream_port_max_bpc bpc)
 
 	return -1;
 }
-
-#if defined(CONFIG_DRM_AMD_DC_DCN)
 uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw)
 {
 	switch (bw) {
@@ -4831,7 +1991,6 @@ static uint32_t intersect_frl_link_bw_support(
 
 	return supported_bw_in_kbps;
 }
-#endif
 
 static void read_dp_device_vendor_id(struct dc_link *link)
 {
@@ -4944,7 +2103,6 @@ static void get_active_converter_info(
 						translate_dpcd_max_bpc(
 							hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT);
 
-#if defined(CONFIG_DRM_AMD_DC_DCN)
 					if (link->dc->caps.dp_hdmi21_pcon_support) {
 						union hdmi_encoded_link_bw hdmi_encoded_link_bw;
 
@@ -4963,7 +2121,6 @@ static void get_active_converter_info(
 						if (link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps > 0)
 							link->dpcd_caps.dongle_caps.extendedCapValid = true;
 					}
-#endif
 
 					if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz != 0)
 						link->dpcd_caps.dongle_caps.extendedCapValid = true;
@@ -5034,6 +2191,7 @@ static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data,
 		int length)
 {
 	int retry = 0;
+	union dp_downstream_port_present ds_port = { 0 };
 
 	if (!link->dpcd_caps.dpcd_rev.raw) {
 		do {
@@ -5046,6 +2204,9 @@ static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data,
 		} while (retry++ < 4 && !link->dpcd_caps.dpcd_rev.raw);
 	}
 
+	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
+				 DP_DPCD_REV];
+
 	if (link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER) {
 		switch (link->dpcd_caps.branch_dev_id) {
 		/* 0010FA active dongles (DP-VGA, DP-DLDVI converters) power down
@@ -5070,6 +2231,7 @@ static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data,
 
 /* Read additional sink caps defined in source specific DPCD area
  * This function currently only reads from SinkCapability address (DP_SOURCE_SINK_CAP)
+ * TODO: Add FS caps and read from DP_SOURCE_SINK_FS_CAP as well
  */
 static bool dpcd_read_sink_ext_caps(struct dc_link *link)
 {
@@ -5100,7 +2262,8 @@ enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link)
 	/* By reading LTTPR capability, RX assumes that we will enable
 	 * LTTPR extended aux timeout if LTTPR is present.
 	 */
-	status = core_link_read_dpcd(link,
+	status = core_link_read_dpcd(
+			link,
 			DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV,
 			lttpr_dpcd_data,
 			sizeof(lttpr_dpcd_data));
@@ -5137,8 +2300,7 @@ enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link)
 							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
 
 	/* If this chip cap is set, at least one retimer must exist in the chain
-	 * Override count to 1 if we receive a known bad count (0 or an invalid value)
-	 */
+	 * Override count to 1 if we receive a known bad count (0 or an invalid value) */
 	if (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN &&
 			(dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) == 0)) {
 		ASSERT(0);
@@ -5164,74 +2326,6 @@ bool dp_is_lttpr_present(struct dc_link *link)
 			link->dpcd_caps.lttpr_caps.revision.raw >= 0x14);
 }
 
-enum lttpr_mode dp_decide_lttpr_mode(struct dc_link *link, struct dc_link_settings *link_setting)
-{
-	enum dp_link_encoding encoding = dp_get_link_encoding_format(link_setting);
-
-	if (encoding == DP_8b_10b_ENCODING)
-		return dp_decide_8b_10b_lttpr_mode(link);
-	else if (encoding == DP_128b_132b_ENCODING)
-		return dp_decide_128b_132b_lttpr_mode(link);
-
-	ASSERT(0);
-	return LTTPR_MODE_NON_LTTPR;
-}
-
-void dp_get_lttpr_mode_override(struct dc_link *link, enum lttpr_mode *override)
-{
-	if (!dp_is_lttpr_present(link))
-		return;
-
-	if (link->dc->debug.lttpr_mode_override == LTTPR_MODE_TRANSPARENT) {
-		*override = LTTPR_MODE_TRANSPARENT;
-	} else if (link->dc->debug.lttpr_mode_override == LTTPR_MODE_NON_TRANSPARENT) {
-		*override = LTTPR_MODE_NON_TRANSPARENT;
-	} else if (link->dc->debug.lttpr_mode_override == LTTPR_MODE_NON_LTTPR) {
-		*override = LTTPR_MODE_NON_LTTPR;
-	}
-	DC_LOG_DC("lttpr_mode_override chose LTTPR_MODE = %d\n", (uint8_t)(*override));
-}
-
-enum lttpr_mode dp_decide_8b_10b_lttpr_mode(struct dc_link *link)
-{
-	bool is_lttpr_present = dp_is_lttpr_present(link);
-	bool vbios_lttpr_force_non_transparent = link->dc->caps.vbios_lttpr_enable;
-	bool vbios_lttpr_aware = link->dc->caps.vbios_lttpr_aware;
-
-	if (!is_lttpr_present)
-		return LTTPR_MODE_NON_LTTPR;
-
-	if (vbios_lttpr_aware) {
-		if (vbios_lttpr_force_non_transparent) {
-			DC_LOG_DC("chose LTTPR_MODE_NON_TRANSPARENT due to VBIOS DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE set to 1.\n");
-			return LTTPR_MODE_NON_TRANSPARENT;
-		} else {
-			DC_LOG_DC("chose LTTPR_MODE_NON_TRANSPARENT by default due to VBIOS not set DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE set to 1.\n");
-			return LTTPR_MODE_TRANSPARENT;
-		}
-	}
-
-	if (link->dc->config.allow_lttpr_non_transparent_mode.bits.DP1_4A &&
-			link->dc->caps.extended_aux_timeout_support) {
-		DC_LOG_DC("chose LTTPR_MODE_NON_TRANSPARENT by default and dc->config.allow_lttpr_non_transparent_mode.bits.DP1_4A set to 1.\n");
-		return LTTPR_MODE_NON_TRANSPARENT;
-	}
-
-	DC_LOG_DC("chose LTTPR_MODE_NON_LTTPR.\n");
-	return LTTPR_MODE_NON_LTTPR;
-}
-
-enum lttpr_mode dp_decide_128b_132b_lttpr_mode(struct dc_link *link)
-{
-	enum lttpr_mode mode = LTTPR_MODE_NON_LTTPR;
-
-	if (dp_is_lttpr_present(link))
-		mode = LTTPR_MODE_NON_TRANSPARENT;
-
-	DC_LOG_DC("128b_132b chose LTTPR_MODE %d.\n", mode);
-	return mode;
-}
-
 static bool get_usbc_cable_id(struct dc_link *link, union dp_cable_id *cable_id)
 {
 	union dmub_rb_cmd cmd;
@@ -5387,6 +2481,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 			break;
 	}
 
+
 	if (status != DC_OK) {
 		dm_error("%s: Read receiver caps dpcd data failed.\n", __func__);
 		return false;
@@ -5395,6 +2490,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 	if (!dp_is_lttpr_present(link))
 		try_to_configure_aux_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD);
 
+
 	{
 		union training_aux_rd_interval aux_rd_interval;
 
@@ -5402,7 +2498,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 			dpcd_data[DP_TRAINING_AUX_RD_INTERVAL];
 
 		link->dpcd_caps.ext_receiver_cap_field_present =
-				aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1;
+				aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1 ? true:false;
 
 		if (aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1) {
 			uint8_t ext_cap_data[16];
@@ -5523,17 +2619,6 @@ static bool retrieve_link_cap(struct dc_link *link)
 		sink_id.ieee_device_id,
 		sizeof(sink_id.ieee_device_id));
 
-	/* Quirk Apple MBP 2017 15" Retina panel: Wrong DP_MAX_LINK_RATE */
-	{
-		uint8_t str_mbp_2017[] = { 101, 68, 21, 101, 98, 97 };
-
-		if ((link->dpcd_caps.sink_dev_id == 0x0010fa) &&
-		    !memcmp(link->dpcd_caps.sink_dev_id_str, str_mbp_2017,
-			    sizeof(str_mbp_2017))) {
-			link->reported_link_cap.link_rate = 0x0c;
-		}
-	}
-
 	core_link_read_dpcd(
 		link,
 		DP_SINK_HW_REVISION_START,
@@ -5626,7 +2711,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 		DC_LOG_DP2("128b/132b encoding is supported at link %d", link->link_index);
 
 		core_link_read_dpcd(link,
-				DP_128b_132b_SUPPORTED_LINK_RATES,
+				DP_128B132B_SUPPORTED_LINK_RATES,
 				&link->dpcd_caps.dp_128b_132b_supported_link_rates.raw,
 				sizeof(link->dpcd_caps.dp_128b_132b_supported_link_rates.raw));
 		if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR20)
@@ -5743,7 +2828,7 @@ bool detect_dp_sink_caps(struct dc_link *link)
 	return retrieve_link_cap(link);
 }
 
-static enum dc_link_rate linkRateInKHzToLinkRateMultiplier(uint32_t link_rate_in_khz)
+enum dc_link_rate linkRateInKHzToLinkRateMultiplier(uint32_t link_rate_in_khz)
 {
 	enum dc_link_rate link_rate;
 	// LinkRate is normally stored as a multiplier of 0.27 Gbps per lane. Do the translation.
@@ -6529,7 +3614,7 @@ void dp_set_fec_enable(struct dc_link *link, bool enable)
 void dpcd_set_source_specific_data(struct dc_link *link)
 {
 	if (!link->dc->vendor_signature.is_valid) {
-		enum dc_status __maybe_unused result_write_min_hblank = DC_NOT_SUPPORTED;
+		enum dc_status result_write_min_hblank = DC_NOT_SUPPORTED;
 		struct dpcd_amd_signature amd_signature = {0};
 		struct dpcd_amd_device_id amd_device_id = {0};
 
@@ -6652,9 +3737,9 @@ bool dc_link_get_backlight_level_nits(struct dc_link *link,
 			link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
 		return false;
 
-	if (core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_CURRENT_PEAK,
+	if (!core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_CURRENT_PEAK,
 			dpcd_backlight_get.raw,
-			sizeof(union dpcd_source_backlight_get)) != DC_OK)
+			sizeof(union dpcd_source_backlight_get)))
 		return false;
 
 	*backlight_millinits_avg =
@@ -6693,9 +3778,9 @@ bool dc_link_read_default_bl_aux(struct dc_link *link, uint32_t *backlight_milli
 		link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
 		return false;
 
-	if (core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_LEVEL,
+	if (!core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_LEVEL,
 		(uint8_t *) backlight_millinits,
-		sizeof(uint32_t)) != DC_OK)
+		sizeof(uint32_t)))
 		return false;
 
 	return true;
@@ -6767,6 +3852,7 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin
 	return false;
 }
 
+
 enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings)
 {
 	if ((link_settings->link_rate >= LINK_RATE_LOW) &&
@@ -7180,42 +4266,6 @@ void dp_disable_link_phy_mst(struct dc_link *link, const struct link_resource *l
 	dp_enable_mst_on_sink(link, false);
 }
 
-bool dp_set_hw_training_pattern(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum dc_dp_training_pattern pattern,
-	uint32_t offset)
-{
-	enum dp_test_pattern test_pattern = DP_TEST_PATTERN_UNSUPPORTED;
-
-	switch (pattern) {
-	case DP_TRAINING_PATTERN_SEQUENCE_1:
-		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN1;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_2:
-		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN2;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_3:
-		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN3;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_4:
-		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN4;
-		break;
-	case DP_128b_132b_TPS1:
-		test_pattern = DP_TEST_PATTERN_128b_132b_TPS1_TRAINING_MODE;
-		break;
-	case DP_128b_132b_TPS2:
-		test_pattern = DP_TEST_PATTERN_128b_132b_TPS2_TRAINING_MODE;
-		break;
-	default:
-		break;
-	}
-
-	dp_set_hw_test_pattern(link, link_res, test_pattern, NULL, 0);
-
-	return true;
-}
-
 void dp_set_hw_lane_settings(
 	struct dc_link *link,
 	const struct link_resource *link_res,
@@ -7237,25 +4287,6 @@ void dp_set_hw_lane_settings(
 			sizeof(link->cur_lane_setting));
 }
 
-void dp_set_hw_test_pattern(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum dp_test_pattern test_pattern,
-	uint8_t *custom_pattern,
-	uint32_t custom_pattern_size)
-{
-	const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
-	struct encoder_set_dp_phy_pattern_param pattern_param = {0};
-
-	pattern_param.dp_phy_pattern = test_pattern;
-	pattern_param.custom_pattern = custom_pattern;
-	pattern_param.custom_pattern_size = custom_pattern_size;
-	pattern_param.dp_panel_mode = dp_get_panel_mode(link);
-
-	if (link_hwss->ext.set_dp_link_test_pattern)
-		link_hwss->ext.set_dp_link_test_pattern(link, link_res, &pattern_param);
-}
-
 void dp_retrain_link_dp_test(struct dc_link *link,
 			struct dc_link_settings *link_setting,
 			bool skip_video_pattern)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
index 73f58ac3b93f..b7e53b7dc4ed 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
@@ -975,6 +975,9 @@ struct dpcd_usb4_dp_tunneling_info {
 /* TODO - Use DRM header to replace above once available */
 #endif // DP_INTRA_HOP_AUX_REPLY_INDICATION
 
+#ifndef DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE
+#define DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE	0x50
+#endif
 union dp_main_line_channel_coding_cap {
 	struct {
 		uint8_t DP_8b_10b_SUPPORTED	:1;
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index d0d2d964d601..e349976f385f 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -459,27 +459,6 @@ void dc_link_dp_set_drive_settings(
 	const struct link_resource *link_res,
 	struct link_training_settings *lt_settings);
 
-bool dc_link_dp_perform_link_training_skip_aux(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct dc_link_settings *link_setting);
-
-enum link_training_result dc_link_dp_perform_link_training(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct dc_link_settings *link_settings,
-	bool skip_video_pattern);
-
-bool dc_link_dp_sync_lt_begin(struct dc_link *link);
-
-enum link_training_result dc_link_dp_sync_lt_attempt(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct dc_link_settings *link_setting,
-	struct dc_link_training_overrides *lt_settings);
-
-bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down);
-
 bool dc_link_dp_set_test_pattern(
 	struct dc_link *link,
 	enum dp_test_pattern test_pattern,
@@ -601,4 +580,7 @@ bool reset_cur_dp_mst_topology(struct dc_link *link);
 int dc_link_aux_transfer_raw(struct ddc_service *ddc,
 		struct aux_payload *payload,
 		enum aux_return_code_type *operation_result);
+
+enum lttpr_mode dc_link_decide_lttpr_mode(struct dc_link *link,
+		struct dc_link_settings *link_setting);
 #endif /* DC_LINK_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
index e8d8c5cb1309..a4d9f1fea046 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
@@ -31,7 +31,6 @@
 #define LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD 3200 /*us*/
 #define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 552 /*us*/
 #define MAX_MTP_SLOT_COUNT 64
-#define DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE 0x50
 #define TRAINING_AUX_RD_INTERVAL 100 //us
 #define LINK_AUX_WAKE_TIMEOUT_MS 1500 // Timeout when trying to wake unresponsive DPRX.
 
@@ -40,11 +39,6 @@ struct dc_stream_state;
 struct dc_link_settings;
 
 enum {
-	LINK_TRAINING_MAX_RETRY_COUNT = 5,
-	/* to avoid infinite loop where-in the receiver
-	 * switches between different VS
-	 */
-	LINK_TRAINING_MAX_CR_RETRY = 100,
 	/*
 	 * Some receivers fail to train on first try and are good
 	 * on subsequent tries. 2 retries should be plenty. If we
@@ -74,17 +68,8 @@ bool decide_link_settings(
 	struct dc_stream_state *stream,
 	struct dc_link_settings *link_setting);
 
-bool perform_link_training_with_retries(
-	const struct dc_link_settings *link_setting,
-	bool skip_video_pattern,
-	int attempts,
-	struct pipe_ctx *pipe_ctx,
-	enum signal_type signal,
-	bool do_fallback);
-
-bool hpd_rx_irq_check_link_loss_status(
-	struct dc_link *link,
-	union hpd_irq_data *hpd_irq_dpcd_data);
+bool hpd_rx_irq_check_link_loss_status(struct dc_link *link,
+				       union hpd_irq_data *hpd_irq_dpcd_data);
 
 bool is_mst_supported(struct dc_link *link);
 
@@ -109,63 +94,6 @@ void dpcd_set_source_specific_data(struct dc_link *link);
 
 void dpcd_write_cable_id_to_dprx(struct dc_link *link);
 
-/* Write DPCD link configuration data. */
-enum dc_status dpcd_set_link_settings(
-	struct dc_link *link,
-	const struct link_training_settings *lt_settings);
-/* Write DPCD drive settings. */
-enum dc_status dpcd_set_lane_settings(
-	struct dc_link *link,
-	const struct link_training_settings *link_training_setting,
-	uint32_t offset);
-/* Read training status and adjustment requests from DPCD. */
-enum dc_status dp_get_lane_status_and_lane_adjust(
-	struct dc_link *link,
-	const struct link_training_settings *link_training_setting,
-	union lane_status ln_status[LANE_COUNT_DP_MAX],
-	union lane_align_status_updated *ln_align,
-	union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
-	uint32_t offset);
-
-void dp_wait_for_training_aux_rd_interval(
-	struct dc_link *link,
-	uint32_t wait_in_micro_secs);
-
-bool dp_is_cr_done(enum dc_lane_count ln_count,
-	union lane_status *dpcd_lane_status);
-
-enum link_training_result dp_get_cr_failure(enum dc_lane_count ln_count,
-	union lane_status *dpcd_lane_status);
-
-bool dp_is_ch_eq_done(enum dc_lane_count ln_count,
-	union lane_status *dpcd_lane_status);
-bool dp_is_symbol_locked(enum dc_lane_count ln_count,
-	union lane_status *dpcd_lane_status);
-bool dp_is_interlane_aligned(union lane_align_status_updated align_status);
-
-bool dp_is_max_vs_reached(
-	const struct link_training_settings *lt_settings);
-void dp_hw_to_dpcd_lane_settings(
-	const struct link_training_settings *lt_settings,
-	const struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
-	union dpcd_training_lane dpcd_lane_settings[]);
-void dp_decide_lane_settings(
-	const struct link_training_settings *lt_settings,
-	const union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
-	struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
-	union dpcd_training_lane dpcd_lane_settings[]);
-
-uint32_t dp_translate_training_aux_read_interval(uint32_t dpcd_aux_read_interval);
-
-enum dpcd_training_patterns
-	dc_dp_training_pattern_to_dpcd_training_pattern(
-	struct dc_link *link,
-	enum dc_dp_training_pattern pattern);
-
-uint8_t dc_dp_initialize_scrambling_data_symbols(
-	struct dc_link *link,
-	enum dc_dp_training_pattern pattern);
-
 enum dc_status dp_set_fec_ready(struct dc_link *link, const struct link_resource *link_res, bool ready);
 void dp_set_fec_enable(struct dc_link *link, bool enable);
 bool dp_set_dsc_enable(struct pipe_ctx *pipe_ctx, bool enable);
@@ -183,32 +111,15 @@ void dp_decide_training_settings(
 /* Convert PHY repeater count read from DPCD uint8_t. */
 uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count);
 
-/* Check DPCD training status registers to detect link loss. */
-enum link_training_result dp_check_link_loss_status(
-		struct dc_link *link,
-		const struct link_training_settings *link_training_setting);
-
-enum dc_status dpcd_configure_lttpr_mode(
-		struct dc_link *link,
-		struct link_training_settings *lt_settings);
-
 enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings);
 enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link);
 bool dp_is_lttpr_present(struct dc_link *link);
-enum lttpr_mode dp_decide_lttpr_mode(struct dc_link *link, struct dc_link_settings *link_setting);
-void dp_get_lttpr_mode_override(struct dc_link *link, enum lttpr_mode *override);
-enum lttpr_mode dp_decide_8b_10b_lttpr_mode(struct dc_link *link);
-enum lttpr_mode dp_decide_128b_132b_lttpr_mode(struct dc_link *link);
 bool dpcd_write_128b_132b_sst_payload_allocation_table(
 		const struct dc_stream_state *stream,
 		struct dc_link *link,
 		struct link_mst_stream_allocation_table *proposed_table,
 		bool allocate);
 
-enum dc_status dpcd_configure_channel_coding(
-		struct dc_link *link,
-		struct link_training_settings *lt_settings);
-
 bool dpcd_poll_for_allocation_change_trigger(struct dc_link *link);
 
 struct fixed31_32 calculate_sst_avg_time_slots_per_mtp(
@@ -220,7 +131,6 @@ void enable_dp_hpo_output(struct dc_link *link,
 void disable_dp_hpo_output(struct dc_link *link,
 		const struct link_resource *link_res,
 		enum signal_type signal);
-
 void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable);
 bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
 void edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd);
@@ -242,26 +152,20 @@ void dp_disable_link_phy(struct dc_link *link, const struct link_resource *link_
 void dp_disable_link_phy_mst(struct dc_link *link, const struct link_resource *link_res,
 		enum signal_type signal);
 
-bool dp_set_hw_training_pattern(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		enum dc_dp_training_pattern pattern,
-		uint32_t offset);
-
 void dp_set_hw_lane_settings(
 		struct dc_link *link,
 		const struct link_resource *link_res,
 		const struct link_training_settings *link_settings,
 		uint32_t offset);
 
-void dp_set_hw_test_pattern(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		enum dp_test_pattern test_pattern,
-		uint8_t *custom_pattern,
-		uint32_t custom_pattern_size);
-
 void dp_retrain_link_dp_test(struct dc_link *link,
 		struct dc_link_settings *link_setting,
 		bool skip_video_pattern);
+
+bool decide_fallback_link_setting(
+		struct dc_link *link,
+		struct dc_link_settings *max,
+		struct dc_link_settings *cur,
+		enum link_training_result training_result);
+
 #endif /* __DC_LINK_DP_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index 69333ac9bab0..2e3d2073f8bd 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -24,7 +24,9 @@
 # PHY, HPD, DDC and etc).
 
 LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
-link_hpd.o link_ddc.o link_dpcd.o link_dp_dpia.o
+link_hpd.o link_ddc.o link_dpcd.o link_dp_dpia.o link_dp_training.o \
+link_dp_training_8b_10b.o link_dp_training_128b_132b.o link_dp_training_dpia.o \
+link_dp_training_auxless.o link_dp_training_fixed_vs_pe_retimer.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
index 47ad2cae483b..6136db392548 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
@@ -34,12 +34,20 @@
 #include "link_hwss.h"
 #include "dm_helpers.h"
 #include "dmub/inc/dmub_cmd.h"
-#include "link/link_dpcd.h"
+#include "link_dpcd.h"
+#include "link_dp_training.h"
 #include "dc_dmub_srv.h"
 
 #define DC_LOGGER \
 	link->ctx->logger
 
+/** @note Can remove once DP tunneling registers in upstream include/drm/drm_dp_helper.h */
+/* DPCD DP Tunneling over USB4 */
+#define DP_TUNNELING_CAPABILITIES_SUPPORT 0xe000d
+#define DP_IN_ADAPTER_INFO                0xe000e
+#define DP_USB4_DRIVER_ID                 0xe000f
+#define DP_USB4_ROUTER_TOPOLOGY_ID        0xe001b
+
 enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link)
 {
 	enum dc_status status = DC_OK;
@@ -47,19 +55,20 @@ enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link)
 	uint8_t dpcd_topology_data[DPCD_USB4_TOPOLOGY_ID_LEN] = {0};
 	uint8_t i = 0;
 
-	status = core_link_read_dpcd(link,
+	status = core_link_read_dpcd(
+			link,
 			DP_TUNNELING_CAPABILITIES_SUPPORT,
 			dpcd_dp_tun_data,
 			sizeof(dpcd_dp_tun_data));
 
-	status = core_link_read_dpcd(link,
+	status = core_link_read_dpcd(
+			link,
 			DP_USB4_ROUTER_TOPOLOGY_ID,
 			dpcd_topology_data,
 			sizeof(dpcd_topology_data));
 
 	link->dpcd_caps.usb4_dp_tun_info.dp_tun_cap.raw =
-			dpcd_dp_tun_data[DP_TUNNELING_CAPABILITIES_SUPPORT -
-					 DP_TUNNELING_CAPABILITIES_SUPPORT];
+			dpcd_dp_tun_data[DP_TUNNELING_CAPABILITIES_SUPPORT - DP_TUNNELING_CAPABILITIES_SUPPORT];
 	link->dpcd_caps.usb4_dp_tun_info.dpia_info.raw =
 			dpcd_dp_tun_data[DP_IN_ADAPTER_INFO - DP_TUNNELING_CAPABILITIES_SUPPORT];
 	link->dpcd_caps.usb4_dp_tun_info.usb4_driver_id =
@@ -96,929 +105,3 @@ bool dc_link_dpia_query_hpd_status(struct dc_link *link)
 	return is_hpd_high;
 }
 
-/* Configure link as prescribed in link_setting; set LTTPR mode; and
- * Initialize link training settings.
- * Abort link training if sink unplug detected.
- *
- * @param link DPIA link being trained.
- * @param[in] link_setting Lane count, link rate and downspread control.
- * @param[out] lt_settings Link settings and drive settings (voltage swing and pre-emphasis).
- */
-static enum link_training_result dpia_configure_link(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		const struct dc_link_settings *link_setting,
-		struct link_training_settings *lt_settings)
-{
-	enum dc_status status;
-	bool fec_enable;
-
-	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) configuring\n - LTTPR mode(%d)\n",
-				__func__,
-				link->link_id.enum_id - ENUM_ID_1,
-				lt_settings->lttpr_mode);
-
-	dp_decide_training_settings(link,
-		link_setting,
-		lt_settings);
-
-	dp_get_lttpr_mode_override(link, &lt_settings->lttpr_mode);
-
-	status = dpcd_configure_channel_coding(link, lt_settings);
-	if (status != DC_OK && link->is_hpd_pending)
-		return LINK_TRAINING_ABORT;
-
-	/* Configure lttpr mode */
-	status = dpcd_configure_lttpr_mode(link, lt_settings);
-	if (status != DC_OK && link->is_hpd_pending)
-		return LINK_TRAINING_ABORT;
-
-	/* Set link rate, lane count and spread. */
-	status = dpcd_set_link_settings(link, lt_settings);
-	if (status != DC_OK && link->is_hpd_pending)
-		return LINK_TRAINING_ABORT;
-
-	if (link->preferred_training_settings.fec_enable)
-		fec_enable = *link->preferred_training_settings.fec_enable;
-	else
-		fec_enable = true;
-	status = dp_set_fec_ready(link, link_res, fec_enable);
-	if (status != DC_OK && link->is_hpd_pending)
-		return LINK_TRAINING_ABORT;
-
-	return LINK_TRAINING_SUCCESS;
-}
-
-static enum dc_status core_link_send_set_config(struct dc_link *link,
-	uint8_t msg_type,
-	uint8_t msg_data)
-{
-	struct set_config_cmd_payload payload;
-	enum set_config_status set_config_result = SET_CONFIG_PENDING;
-
-	/* prepare set_config payload */
-	payload.msg_type = msg_type;
-	payload.msg_data = msg_data;
-
-	if (!link->ddc->ddc_pin && !link->aux_access_disabled &&
-	    (dm_helpers_dmub_set_config_sync(link->ctx, link,
-					     &payload, &set_config_result) == -1)) {
-		return DC_ERROR_UNEXPECTED;
-	}
-
-	/* set_config should return ACK if successful */
-	return (set_config_result == SET_CONFIG_ACK_RECEIVED) ? DC_OK : DC_ERROR_UNEXPECTED;
-}
-
-/* Build SET_CONFIG message data payload for specified message type. */
-static uint8_t dpia_build_set_config_data(enum dpia_set_config_type type,
-		struct dc_link *link,
-		struct link_training_settings *lt_settings)
-{
-	union dpia_set_config_data data;
-
-	data.raw = 0;
-
-	switch (type) {
-	case DPIA_SET_CFG_SET_LINK:
-		data.set_link.mode = lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT ? 1 : 0;
-		break;
-	case DPIA_SET_CFG_SET_PHY_TEST_MODE:
-		break;
-	case DPIA_SET_CFG_SET_VSPE:
-		/* Assume all lanes have same drive settings. */
-		data.set_vspe.swing = lt_settings->hw_lane_settings[0].VOLTAGE_SWING;
-		data.set_vspe.pre_emph = lt_settings->hw_lane_settings[0].PRE_EMPHASIS;
-		data.set_vspe.max_swing_reached =
-			lt_settings->hw_lane_settings[0].VOLTAGE_SWING ==
-			VOLTAGE_SWING_MAX_LEVEL ? 1 : 0;
-		data.set_vspe.max_pre_emph_reached =
-			lt_settings->hw_lane_settings[0].PRE_EMPHASIS ==
-			PRE_EMPHASIS_MAX_LEVEL ? 1 : 0;
-		break;
-	default:
-		ASSERT(false); /* Message type not supported by helper function. */
-		break;
-	}
-
-	return data.raw;
-}
-
-/* Convert DC training pattern to DPIA training stage. */
-static enum dc_status convert_trng_ptn_to_trng_stg(enum dc_dp_training_pattern tps, enum dpia_set_config_ts *ts)
-{
-	enum dc_status status = DC_OK;
-
-	switch (tps) {
-	case DP_TRAINING_PATTERN_SEQUENCE_1:
-		*ts = DPIA_TS_TPS1;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_2:
-		*ts = DPIA_TS_TPS2;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_3:
-		*ts = DPIA_TS_TPS3;
-		break;
-	case DP_TRAINING_PATTERN_SEQUENCE_4:
-		*ts = DPIA_TS_TPS4;
-		break;
-	case DP_TRAINING_PATTERN_VIDEOIDLE:
-		*ts = DPIA_TS_DPRX_DONE;
-		break;
-	default: /* TPS not supported by helper function. */
-		ASSERT(false);
-		*ts = DPIA_TS_DPRX_DONE;
-		status = DC_UNSUPPORTED_VALUE;
-		break;
-	}
-
-	return status;
-}
-
-/* Write training pattern to DPCD. */
-static enum dc_status dpcd_set_lt_pattern(struct dc_link *link,
-	enum dc_dp_training_pattern pattern,
-	uint32_t hop)
-{
-	union dpcd_training_pattern dpcd_pattern = {0};
-	uint32_t dpcd_tps_offset = DP_TRAINING_PATTERN_SET;
-	enum dc_status status;
-
-	if (hop != DPRX)
-		dpcd_tps_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
-			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (hop - 1));
-
-	/* DpcdAddress_TrainingPatternSet */
-	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
-		dc_dp_training_pattern_to_dpcd_training_pattern(link, pattern);
-
-	dpcd_pattern.v1_4.SCRAMBLING_DISABLE =
-		dc_dp_initialize_scrambling_data_symbols(link, pattern);
-
-	if (hop != DPRX) {
-		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n 0x%X pattern = %x\n",
-					__func__,
-					hop,
-					dpcd_tps_offset,
-					dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
-	} else {
-		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X pattern = %x\n",
-					__func__,
-					dpcd_tps_offset,
-					dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
-	}
-
-	status = core_link_write_dpcd(link,
-				      dpcd_tps_offset,
-				      &dpcd_pattern.raw,
-				      sizeof(dpcd_pattern.raw));
-
-	return status;
-}
-
-/* Execute clock recovery phase of link training for specified hop in display
- * path.in non-transparent mode:
- * - Driver issues both DPCD and SET_CONFIG transactions.
- * - TPS1 is transmitted for any hops downstream of DPOA.
- * - Drive (VS/PE) only transmitted for the hop immediately downstream of DPOA.
- * - CR for the first hop (DPTX-to-DPIA) is assumed to be successful.
- *
- * @param link DPIA link being trained.
- * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
- * @param hop The Hop in display path. DPRX = 0.
- */
-static enum link_training_result dpia_training_cr_non_transparent(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings,
-		uint32_t hop)
-{
-	enum link_training_result result = LINK_TRAINING_CR_FAIL_LANE0;
-	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
-	enum dc_status status;
-	uint32_t retries_cr = 0; /* Number of consecutive attempts with same VS or PE. */
-	uint32_t retry_count = 0;
-	/* From DP spec, CR read interval is always 100us. */
-	uint32_t wait_time_microsec = TRAINING_AUX_RD_INTERVAL;
-	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-	uint8_t set_cfg_data;
-	enum dpia_set_config_ts ts;
-
-	repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-	/* Cap of LINK_TRAINING_MAX_CR_RETRY attempts at clock recovery.
-	 * Fix inherited from perform_clock_recovery_sequence() -
-	 * the DP equivalent of this function:
-	 * Required for Synaptics MST hub which can put the LT in
-	 * infinite loop by switching the VS between level 0 and level 1
-	 * continuously.
-	 */
-	while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
-	       (retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
-		/* DPTX-to-DPIA */
-		if (hop == repeater_cnt) {
-			/* Send SET_CONFIG(SET_LINK:LC,LR,LTTPR) to notify DPOA that
-			 * non-transparent link training has started.
-			 * This also enables the transmission of clk_sync packets.
-			 */
-			set_cfg_data = dpia_build_set_config_data(DPIA_SET_CFG_SET_LINK,
-					link,
-					lt_settings);
-			status = core_link_send_set_config(link,
-					DPIA_SET_CFG_SET_LINK,
-					set_cfg_data);
-			/* CR for this hop is considered successful as long as
-			 * SET_CONFIG message is acknowledged by DPOA.
-			 */
-			if (status == DC_OK)
-				result = LINK_TRAINING_SUCCESS;
-			else
-				result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		/* DPOA-to-x */
-		/* Instruct DPOA to transmit TPS1 then update DPCD. */
-		if (retry_count == 0) {
-			status = convert_trng_ptn_to_trng_stg(lt_settings->pattern_for_cr, &ts);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-			status = dpcd_set_lt_pattern(link, lt_settings->pattern_for_cr, hop);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-		}
-
-		/* Update DPOA drive settings then DPCD. DPOA does only adjusts
-		 * drive settings for hops immediately downstream.
-		 */
-		if (hop == repeater_cnt - 1) {
-			set_cfg_data = dpia_build_set_config_data(DPIA_SET_CFG_SET_VSPE,
-					link,
-					lt_settings);
-			status = core_link_send_set_config(link,
-					DPIA_SET_CFG_SET_VSPE,
-					set_cfg_data);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-		}
-		status = dpcd_set_lane_settings(link, lt_settings, hop);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
-
-		/* Read status and adjustment requests from DPCD. */
-		status = dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				hop);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		/* Check if clock recovery successful. */
-		if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
-			result = LINK_TRAINING_SUCCESS;
-			break;
-		}
-
-		result = dp_get_cr_failure(lane_count, dpcd_lane_status);
-
-		if (dp_is_max_vs_reached(lt_settings))
-			break;
-
-		/* Count number of attempts with same drive settings.
-		 * Note: settings are the same for all lanes,
-		 * so comparing first lane is sufficient.
-		 */
-		if ((lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
-				dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
-				&& (lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET ==
-						dpcd_lane_adjust[0].bits.PRE_EMPHASIS_LANE))
-			retries_cr++;
-		else
-			retries_cr = 0;
-
-		/* Update VS/PE. */
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-				lt_settings->hw_lane_settings,
-				lt_settings->dpcd_lane_settings);
-		retry_count++;
-	}
-
-	/* Abort link training if clock recovery failed due to HPD unplug. */
-	if (link->is_hpd_pending)
-		result = LINK_TRAINING_ABORT;
-
-	DC_LOG_HW_LINK_TRAINING(
-		"%s\n DPIA(%d) clock recovery\n -hop(%d)\n - result(%d)\n - retries(%d)\n - status(%d)\n",
-		__func__,
-		link->link_id.enum_id - ENUM_ID_1,
-		hop,
-		result,
-		retry_count,
-		status);
-
-	return result;
-}
-
-/* Execute clock recovery phase of link training in transparent LTTPR mode:
- * - Driver only issues DPCD transactions and leaves USB4 tunneling (SET_CONFIG) messages to DPIA.
- * - Driver writes TPS1 to DPCD to kick off training.
- * - Clock recovery (CR) for link is handled by DPOA, which reports result to DPIA on completion.
- * - DPIA communicates result to driver by updating CR status when driver reads DPCD.
- *
- * @param link DPIA link being trained.
- * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
- */
-static enum link_training_result dpia_training_cr_transparent(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	enum link_training_result result = LINK_TRAINING_CR_FAIL_LANE0;
-	enum dc_status status;
-	uint32_t retries_cr = 0; /* Number of consecutive attempts with same VS or PE. */
-	uint32_t retry_count = 0;
-	uint32_t wait_time_microsec = lt_settings->cr_pattern_time;
-	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-	/* Cap of LINK_TRAINING_MAX_CR_RETRY attempts at clock recovery.
-	 * Fix inherited from perform_clock_recovery_sequence() -
-	 * the DP equivalent of this function:
-	 * Required for Synaptics MST hub which can put the LT in
-	 * infinite loop by switching the VS between level 0 and level 1
-	 * continuously.
-	 */
-	while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
-	       (retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
-		/* Write TPS1 (not VS or PE) to DPCD to start CR phase.
-		 * DPIA sends SET_CONFIG(SET_LINK) to notify DPOA to
-		 * start link training.
-		 */
-		if (retry_count == 0) {
-			status = dpcd_set_lt_pattern(link, lt_settings->pattern_for_cr, DPRX);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-		}
-
-		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
-
-		/* Read status and adjustment requests from DPCD. */
-		status = dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				DPRX);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		/* Check if clock recovery successful. */
-		if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
-			result = LINK_TRAINING_SUCCESS;
-			break;
-		}
-
-		result = dp_get_cr_failure(lane_count, dpcd_lane_status);
-
-		if (dp_is_max_vs_reached(lt_settings))
-			break;
-
-		/* Count number of attempts with same drive settings.
-		 * Note: settings are the same for all lanes,
-		 * so comparing first lane is sufficient.
-		 */
-		if ((lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
-				dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
-				&& (lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET ==
-						dpcd_lane_adjust[0].bits.PRE_EMPHASIS_LANE))
-			retries_cr++;
-		else
-			retries_cr = 0;
-
-		/* Update VS/PE. */
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-		retry_count++;
-	}
-
-	/* Abort link training if clock recovery failed due to HPD unplug. */
-	if (link->is_hpd_pending)
-		result = LINK_TRAINING_ABORT;
-
-	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) clock recovery\n"
-		" -hop(%d)\n - result(%d)\n - retries(%d)\n",
-		__func__,
-		link->link_id.enum_id - ENUM_ID_1,
-		DPRX,
-		result,
-		retry_count);
-
-	return result;
-}
-
-/* Execute clock recovery phase of link training for specified hop in display
- * path.
- *
- * @param link DPIA link being trained.
- * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
- * @param hop The Hop in display path. DPRX = 0.
- */
-static enum link_training_result dpia_training_cr_phase(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings,
-		uint32_t hop)
-{
-	enum link_training_result result = LINK_TRAINING_CR_FAIL_LANE0;
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
-		result = dpia_training_cr_non_transparent(link, link_res, lt_settings, hop);
-	else
-		result = dpia_training_cr_transparent(link, link_res, lt_settings);
-
-	return result;
-}
-
-/* Return status read interval during equalization phase. */
-static uint32_t dpia_get_eq_aux_rd_interval(const struct dc_link *link,
-		const struct link_training_settings *lt_settings,
-		uint32_t hop)
-{
-	uint32_t wait_time_microsec;
-
-	if (hop == DPRX)
-		wait_time_microsec = lt_settings->eq_pattern_time;
-	else
-		wait_time_microsec =
-				dp_translate_training_aux_read_interval(
-					link->dpcd_caps.lttpr_caps.aux_rd_interval[hop - 1]);
-
-	/* Check debug option for extending aux read interval. */
-	if (link->dc->debug.dpia_debug.bits.extend_aux_rd_interval)
-		wait_time_microsec = DPIA_DEBUG_EXTENDED_AUX_RD_INTERVAL_US;
-
-	return wait_time_microsec;
-}
-
-/* Execute equalization phase of link training for specified hop in display
- * path in non-transparent mode:
- * - driver issues both DPCD and SET_CONFIG transactions.
- * - TPSx is transmitted for any hops downstream of DPOA.
- * - Drive (VS/PE) only transmitted for the hop immediately downstream of DPOA.
- * - EQ for the first hop (DPTX-to-DPIA) is assumed to be successful.
- * - DPRX EQ only reported successful when both DPRX and DPIA requirements
- * (clk sync packets sent) fulfilled.
- *
- * @param link DPIA link being trained.
- * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
- * @param hop The Hop in display path. DPRX = 0.
- */
-static enum link_training_result dpia_training_eq_non_transparent(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings,
-		uint32_t hop)
-{
-	enum link_training_result result = LINK_TRAINING_EQ_FAIL_EQ;
-	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
-	uint32_t retries_eq = 0;
-	enum dc_status status;
-	enum dc_dp_training_pattern tr_pattern;
-	uint32_t wait_time_microsec;
-	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-	uint8_t set_cfg_data;
-	enum dpia_set_config_ts ts;
-
-	/* Training pattern is TPS4 for repeater;
-	 * TPS2/3/4 for DPRX depending on what it supports.
-	 */
-	if (hop == DPRX)
-		tr_pattern = lt_settings->pattern_for_eq;
-	else
-		tr_pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
-
-	repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-	for (retries_eq = 0; retries_eq < LINK_TRAINING_MAX_RETRY_COUNT; retries_eq++) {
-		/* DPTX-to-DPIA equalization always successful. */
-		if (hop == repeater_cnt) {
-			result = LINK_TRAINING_SUCCESS;
-			break;
-		}
-
-		/* Instruct DPOA to transmit TPSn then update DPCD. */
-		if (retries_eq == 0) {
-			status = convert_trng_ptn_to_trng_stg(tr_pattern, &ts);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-			status = core_link_send_set_config(link,
-					DPIA_SET_CFG_SET_TRAINING,
-					ts);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-			status = dpcd_set_lt_pattern(link, tr_pattern, hop);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-		}
-
-		/* Update DPOA drive settings then DPCD. DPOA only adjusts
-		 * drive settings for hop immediately downstream.
-		 */
-		if (hop == repeater_cnt - 1) {
-			set_cfg_data = dpia_build_set_config_data(DPIA_SET_CFG_SET_VSPE,
-								  link,
-								  lt_settings);
-			status = core_link_send_set_config(link,
-							   DPIA_SET_CFG_SET_VSPE,
-							   set_cfg_data);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-		}
-		status = dpcd_set_lane_settings(link, lt_settings, hop);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		/* Extend wait time on second equalisation attempt on final hop to
-		 * ensure clock sync packets have been sent.
-		 */
-		if (hop == DPRX && retries_eq == 1)
-			wait_time_microsec = max(wait_time_microsec, (uint32_t)DPIA_CLK_SYNC_DELAY);
-		else
-			wait_time_microsec = dpia_get_eq_aux_rd_interval(link, lt_settings, hop);
-
-		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
-
-		/* Read status and adjustment requests from DPCD. */
-		status = dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				hop);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		/* CR can still fail during EQ phase. Fail training if CR fails. */
-		if (!dp_is_cr_done(lane_count, dpcd_lane_status)) {
-			result = LINK_TRAINING_EQ_FAIL_CR;
-			break;
-		}
-
-		if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
-		    dp_is_symbol_locked(link->cur_link_settings.lane_count, dpcd_lane_status) &&
-		    dp_is_interlane_aligned(dpcd_lane_status_updated)) {
-			result =  LINK_TRAINING_SUCCESS;
-			break;
-		}
-
-		/* Update VS/PE. */
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-	}
-
-	/* Abort link training if equalization failed due to HPD unplug. */
-	if (link->is_hpd_pending)
-		result = LINK_TRAINING_ABORT;
-
-	DC_LOG_HW_LINK_TRAINING(
-		"%s\n DPIA(%d) equalization\n - hop(%d)\n - result(%d)\n - retries(%d)\n - status(%d)\n",
-		__func__,
-		link->link_id.enum_id - ENUM_ID_1,
-		hop,
-		result,
-		retries_eq,
-		status);
-
-	return result;
-}
-
-/* Execute equalization phase of link training for specified hop in display
- * path in transparent LTTPR mode:
- * - driver only issues DPCD transactions leaves USB4 tunneling (SET_CONFIG) messages to DPIA.
- * - driver writes TPSx to DPCD to notify DPIA that is in equalization phase.
- * - equalization (EQ) for link is handled by DPOA, which reports result to DPIA on completion.
- * - DPIA communicates result to driver by updating EQ status when driver reads DPCD.
- *
- * @param link DPIA link being trained.
- * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
- * @param hop The Hop in display path. DPRX = 0.
- */
-static enum link_training_result dpia_training_eq_transparent(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings)
-{
-	enum link_training_result result = LINK_TRAINING_EQ_FAIL_EQ;
-	uint32_t retries_eq = 0;
-	enum dc_status status;
-	enum dc_dp_training_pattern tr_pattern = lt_settings->pattern_for_eq;
-	uint32_t wait_time_microsec;
-	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
-	union lane_align_status_updated dpcd_lane_status_updated = {0};
-	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
-	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
-
-	wait_time_microsec = dpia_get_eq_aux_rd_interval(link, lt_settings, DPRX);
-
-	for (retries_eq = 0; retries_eq < LINK_TRAINING_MAX_RETRY_COUNT; retries_eq++) {
-		if (retries_eq == 0) {
-			status = dpcd_set_lt_pattern(link, tr_pattern, DPRX);
-			if (status != DC_OK) {
-				result = LINK_TRAINING_ABORT;
-				break;
-			}
-		}
-
-		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
-
-		/* Read status and adjustment requests from DPCD. */
-		status = dp_get_lane_status_and_lane_adjust(
-				link,
-				lt_settings,
-				dpcd_lane_status,
-				&dpcd_lane_status_updated,
-				dpcd_lane_adjust,
-				DPRX);
-		if (status != DC_OK) {
-			result = LINK_TRAINING_ABORT;
-			break;
-		}
-
-		/* CR can still fail during EQ phase. Fail training if CR fails. */
-		if (!dp_is_cr_done(lane_count, dpcd_lane_status)) {
-			result = LINK_TRAINING_EQ_FAIL_CR;
-			break;
-		}
-
-		if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
-				dp_is_symbol_locked(link->cur_link_settings.lane_count, dpcd_lane_status)) {
-			/* Take into consideration corner case for DP 1.4a LL Compliance CTS as USB4
-			 * has to share encoders unlike DP and USBC
-			 */
-			if (dp_is_interlane_aligned(dpcd_lane_status_updated) || (link->is_automated && retries_eq)) {
-				result =  LINK_TRAINING_SUCCESS;
-				break;
-			}
-		}
-
-		/* Update VS/PE. */
-		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
-				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-	}
-
-	/* Abort link training if equalization failed due to HPD unplug. */
-	if (link->is_hpd_pending)
-		result = LINK_TRAINING_ABORT;
-
-	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) equalization\n"
-		" - hop(%d)\n - result(%d)\n - retries(%d)\n",
-		__func__,
-		link->link_id.enum_id - ENUM_ID_1,
-		DPRX,
-		result,
-		retries_eq);
-
-	return result;
-}
-
-/* Execute equalization phase of link training for specified hop in display
- * path.
- *
- * @param link DPIA link being trained.
- * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
- * @param hop The Hop in display path. DPRX = 0.
- */
-static enum link_training_result dpia_training_eq_phase(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		struct link_training_settings *lt_settings,
-		uint32_t hop)
-{
-	enum link_training_result result;
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
-		result = dpia_training_eq_non_transparent(link, link_res, lt_settings, hop);
-	else
-		result = dpia_training_eq_transparent(link, link_res, lt_settings);
-
-	return result;
-}
-
-/* End training of specified hop in display path. */
-static enum dc_status dpcd_clear_lt_pattern(struct dc_link *link, uint32_t hop)
-{
-	union dpcd_training_pattern dpcd_pattern = {0};
-	uint32_t dpcd_tps_offset = DP_TRAINING_PATTERN_SET;
-	enum dc_status status;
-
-	if (hop != DPRX)
-		dpcd_tps_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
-			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (hop - 1));
-
-	status = core_link_write_dpcd(link,
-			dpcd_tps_offset,
-			&dpcd_pattern.raw,
-			sizeof(dpcd_pattern.raw));
-
-	return status;
-}
-
-/* End training of specified hop in display path.
- *
- * In transparent LTTPR mode:
- * - driver clears training pattern for the specified hop in DPCD.
- * In non-transparent LTTPR mode:
- * - in addition to clearing training pattern, driver issues USB4 tunneling
- * (SET_CONFIG) messages to notify DPOA when training is done for first hop
- * (DPTX-to-DPIA) and last hop (DPRX).
- *
- * @param link DPIA link being trained.
- * @param hop The Hop in display path. DPRX = 0.
- */
-static enum link_training_result dpia_training_end(struct dc_link *link,
-		struct link_training_settings *lt_settings,
-		uint32_t hop)
-{
-	enum link_training_result result = LINK_TRAINING_SUCCESS;
-	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
-	enum dc_status status;
-
-	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-		if (hop == repeater_cnt) { /* DPTX-to-DPIA */
-			/* Send SET_CONFIG(SET_TRAINING:0xff) to notify DPOA that
-			 * DPTX-to-DPIA hop trained. No DPCD write needed for first hop.
-			 */
-			status = core_link_send_set_config(link,
-					DPIA_SET_CFG_SET_TRAINING,
-					DPIA_TS_UFP_DONE);
-			if (status != DC_OK)
-				result = LINK_TRAINING_ABORT;
-		} else { /* DPOA-to-x */
-			/* Write 0x0 to TRAINING_PATTERN_SET */
-			status = dpcd_clear_lt_pattern(link, hop);
-			if (status != DC_OK)
-				result = LINK_TRAINING_ABORT;
-		}
-
-		/* Notify DPOA that non-transparent link training of DPRX done. */
-		if (hop == DPRX && result != LINK_TRAINING_ABORT) {
-			status = core_link_send_set_config(link,
-					DPIA_SET_CFG_SET_TRAINING,
-					DPIA_TS_DPRX_DONE);
-			if (status != DC_OK)
-				result = LINK_TRAINING_ABORT;
-		}
-
-	} else { /* non-LTTPR or transparent LTTPR. */
-		/* Write 0x0 to TRAINING_PATTERN_SET */
-		status = dpcd_clear_lt_pattern(link, hop);
-		if (status != DC_OK)
-			result = LINK_TRAINING_ABORT;
-	}
-
-	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) end\n - hop(%d)\n - result(%d)\n - LTTPR mode(%d)\n",
-				__func__,
-				link->link_id.enum_id - ENUM_ID_1,
-				hop,
-				result,
-				lt_settings->lttpr_mode);
-
-	return result;
-}
-
-/* When aborting training of specified hop in display path, clean up by:
- * - Attempting to clear DPCD TRAINING_PATTERN_SET, LINK_BW_SET and LANE_COUNT_SET.
- * - Sending SET_CONFIG(SET_LINK) with lane count and link rate set to 0.
- *
- * @param link DPIA link being trained.
- * @param hop The Hop in display path. DPRX = 0.
- */
-static void dpia_training_abort(struct dc_link *link,
-	struct link_training_settings *lt_settings,
-	uint32_t hop)
-{
-	uint8_t data = 0;
-	uint32_t dpcd_tps_offset = DP_TRAINING_PATTERN_SET;
-
-	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) aborting\n - LTTPR mode(%d)\n - HPD(%d)\n",
-				__func__,
-				link->link_id.enum_id - ENUM_ID_1,
-				lt_settings->lttpr_mode,
-				link->is_hpd_pending);
-
-	/* Abandon clean-up if sink unplugged. */
-	if (link->is_hpd_pending)
-		return;
-
-	if (hop != DPRX)
-		dpcd_tps_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
-			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (hop - 1));
-
-	core_link_write_dpcd(link, dpcd_tps_offset, &data, 1);
-	core_link_write_dpcd(link, DP_LINK_BW_SET, &data, 1);
-	core_link_write_dpcd(link, DP_LANE_COUNT_SET, &data, 1);
-	core_link_send_set_config(link, DPIA_SET_CFG_SET_LINK, data);
-}
-
-enum link_training_result dc_link_dpia_perform_link_training(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct dc_link_settings *link_setting,
-	bool skip_video_pattern)
-{
-	enum link_training_result result;
-	struct link_training_settings lt_settings = {0};
-	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
-	int8_t repeater_id; /* Current hop. */
-
-	struct dc_link_settings link_settings = *link_setting; // non-const copy to pass in
-
-	lt_settings.lttpr_mode = dp_decide_lttpr_mode(link, &link_settings);
-
-	/* Configure link as prescribed in link_setting and set LTTPR mode. */
-	result = dpia_configure_link(link, link_res, link_setting, &lt_settings);
-	if (result != LINK_TRAINING_SUCCESS)
-		return result;
-
-	if (lt_settings.lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-
-	/* Train each hop in turn starting with the one closest to DPTX.
-	 * In transparent or non-LTTPR mode, train only the final hop (DPRX).
-	 */
-	for (repeater_id = repeater_cnt; repeater_id >= 0; repeater_id--) {
-		/* Clock recovery. */
-		result = dpia_training_cr_phase(link, link_res, &lt_settings, repeater_id);
-		if (result != LINK_TRAINING_SUCCESS)
-			break;
-
-		/* Equalization. */
-		result = dpia_training_eq_phase(link, link_res, &lt_settings, repeater_id);
-		if (result != LINK_TRAINING_SUCCESS)
-			break;
-
-		/* Stop training hop. */
-		result = dpia_training_end(link, &lt_settings, repeater_id);
-		if (result != LINK_TRAINING_SUCCESS)
-			break;
-	}
-
-	/* Double-check link status if training successful; gracefully abort
-	 * training of current hop if training failed due to message tunneling
-	 * failure; end training of hop if training ended conventionally and
-	 * falling back to lower bandwidth settings possible.
-	 */
-	if (result == LINK_TRAINING_SUCCESS) {
-		msleep(5);
-		if (!link->is_automated)
-			result = dp_check_link_loss_status(link, &lt_settings);
-	} else if (result == LINK_TRAINING_ABORT) {
-		dpia_training_abort(link, &lt_settings, repeater_id);
-	} else {
-		dpia_training_end(link, &lt_settings, repeater_id);
-	}
-	return result;
-}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
index 1e97e4264dde..98935cc10bb7 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
@@ -28,57 +28,6 @@
 #define __DC_LINK_DPIA_H__
 
 #include "link.h"
-/* This module implements functionality for training DPIA links. */
-
-/* The approximate time (us) it takes to transmit 9 USB4 DP clock sync packets. */
-#define DPIA_CLK_SYNC_DELAY 16000
-
-/* Extend interval between training status checks for manual testing. */
-#define DPIA_DEBUG_EXTENDED_AUX_RD_INTERVAL_US 60000000
-
-/** @note Can remove once DP tunneling registers in upstream include/drm/drm_dp_helper.h */
-/* DPCD DP Tunneling over USB4 */
-#define DP_TUNNELING_CAPABILITIES_SUPPORT 0xe000d
-#define DP_IN_ADAPTER_INFO                0xe000e
-#define DP_USB4_DRIVER_ID                 0xe000f
-#define DP_USB4_ROUTER_TOPOLOGY_ID        0xe001b
-
-/* SET_CONFIG message types sent by driver. */
-enum dpia_set_config_type {
-	DPIA_SET_CFG_SET_LINK = 0x01,
-	DPIA_SET_CFG_SET_PHY_TEST_MODE = 0x05,
-	DPIA_SET_CFG_SET_TRAINING = 0x18,
-	DPIA_SET_CFG_SET_VSPE = 0x19
-};
-
-/* Training stages (TS) in SET_CONFIG(SET_TRAINING) message. */
-enum dpia_set_config_ts {
-	DPIA_TS_DPRX_DONE = 0x00, /* Done training DPRX. */
-	DPIA_TS_TPS1 = 0x01,
-	DPIA_TS_TPS2 = 0x02,
-	DPIA_TS_TPS3 = 0x03,
-	DPIA_TS_TPS4 = 0x07,
-	DPIA_TS_UFP_DONE = 0xff /* Done training DPTX-to-DPIA hop. */
-};
-
-/* SET_CONFIG message data associated with messages sent by driver. */
-union dpia_set_config_data {
-	struct {
-		uint8_t mode : 1;
-		uint8_t reserved : 7;
-	} set_link;
-	struct {
-		uint8_t stage;
-	} set_training;
-	struct {
-		uint8_t swing : 2;
-		uint8_t max_swing_reached : 1;
-		uint8_t pre_emph : 2;
-		uint8_t max_pre_emph_reached : 1;
-		uint8_t reserved : 2;
-	} set_vspe;
-	uint8_t raw;
-};
 
 /* Read tunneling device capability from DPCD and update link capability
  * accordingly.
@@ -90,14 +39,5 @@ enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link);
  */
 bool dc_link_dpia_query_hpd_status(struct dc_link *link);
 
-/* Train DP tunneling link for USB4 DPIA display endpoint.
- * DPIA equivalent of dc_link_dp_perfrorm_link_training.
- * Aborts link training upon detection of sink unplug.
- */
-enum link_training_result dc_link_dpia_perform_link_training(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct dc_link_settings *link_setting,
-	bool skip_video_pattern);
 
 #endif /* __DC_LINK_DPIA_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
new file mode 100644
index 000000000000..0011618ae978
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
@@ -0,0 +1,1698 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements all generic dp link training helper functions and top
+ * level generic training sequence. All variations of dp link training sequence
+ * should be called inside the top level training functions in this file to
+ * ensure the integrity of our overall training procedure across different types
+ * of link encoding and back end hardware.
+ */
+#include "link_dp_training.h"
+#include "link_dp_training_8b_10b.h"
+#include "link_dp_training_128b_132b.h"
+#include "link_dp_training_auxless.h"
+#include "link_dp_training_dpia.h"
+#include "link_dp_training_fixed_vs_pe_retimer.h"
+#include "link_dpcd.h"
+#include "link_dp_trace.h"
+#include "dc_link_dp.h"
+#include "atomfirmware.h"
+#include "link_enc_cfg.h"
+#include "resource.h"
+#include "dm_helpers.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+
+#define POST_LT_ADJ_REQ_LIMIT 6
+#define POST_LT_ADJ_REQ_TIMEOUT 200
+
+void dp_log_training_result(
+	struct dc_link *link,
+	const struct link_training_settings *lt_settings,
+	enum link_training_result status)
+{
+	char *link_rate = "Unknown";
+	char *lt_result = "Unknown";
+	char *lt_spread = "Disabled";
+
+	switch (lt_settings->link_settings.link_rate) {
+	case LINK_RATE_LOW:
+		link_rate = "RBR";
+		break;
+	case LINK_RATE_RATE_2:
+		link_rate = "R2";
+		break;
+	case LINK_RATE_RATE_3:
+		link_rate = "R3";
+		break;
+	case LINK_RATE_HIGH:
+		link_rate = "HBR";
+		break;
+	case LINK_RATE_RBR2:
+		link_rate = "RBR2";
+		break;
+	case LINK_RATE_RATE_6:
+		link_rate = "R6";
+		break;
+	case LINK_RATE_HIGH2:
+		link_rate = "HBR2";
+		break;
+	case LINK_RATE_HIGH3:
+		link_rate = "HBR3";
+		break;
+	case LINK_RATE_UHBR10:
+		link_rate = "UHBR10";
+		break;
+	case LINK_RATE_UHBR13_5:
+		link_rate = "UHBR13.5";
+		break;
+	case LINK_RATE_UHBR20:
+		link_rate = "UHBR20";
+		break;
+	default:
+		break;
+	}
+
+	switch (status) {
+	case LINK_TRAINING_SUCCESS:
+		lt_result = "pass";
+		break;
+	case LINK_TRAINING_CR_FAIL_LANE0:
+		lt_result = "CR failed lane0";
+		break;
+	case LINK_TRAINING_CR_FAIL_LANE1:
+		lt_result = "CR failed lane1";
+		break;
+	case LINK_TRAINING_CR_FAIL_LANE23:
+		lt_result = "CR failed lane23";
+		break;
+	case LINK_TRAINING_EQ_FAIL_CR:
+		lt_result = "CR failed in EQ";
+		break;
+	case LINK_TRAINING_EQ_FAIL_CR_PARTIAL:
+		lt_result = "CR failed in EQ partially";
+		break;
+	case LINK_TRAINING_EQ_FAIL_EQ:
+		lt_result = "EQ failed";
+		break;
+	case LINK_TRAINING_LQA_FAIL:
+		lt_result = "LQA failed";
+		break;
+	case LINK_TRAINING_LINK_LOSS:
+		lt_result = "Link loss";
+		break;
+	case DP_128b_132b_LT_FAILED:
+		lt_result = "LT_FAILED received";
+		break;
+	case DP_128b_132b_MAX_LOOP_COUNT_REACHED:
+		lt_result = "max loop count reached";
+		break;
+	case DP_128b_132b_CHANNEL_EQ_DONE_TIMEOUT:
+		lt_result = "channel EQ timeout";
+		break;
+	case DP_128b_132b_CDS_DONE_TIMEOUT:
+		lt_result = "CDS timeout";
+		break;
+	default:
+		break;
+	}
+
+	switch (lt_settings->link_settings.link_spread) {
+	case LINK_SPREAD_DISABLED:
+		lt_spread = "Disabled";
+		break;
+	case LINK_SPREAD_05_DOWNSPREAD_30KHZ:
+		lt_spread = "0.5% 30KHz";
+		break;
+	case LINK_SPREAD_05_DOWNSPREAD_33KHZ:
+		lt_spread = "0.5% 33KHz";
+		break;
+	default:
+		break;
+	}
+
+	/* Connectivity log: link training */
+
+	/* TODO - DP2.0 Log: add connectivity log for FFE PRESET */
+
+	CONN_MSG_LT(link, "%sx%d %s VS=%d, PE=%d, DS=%s",
+				link_rate,
+				lt_settings->link_settings.lane_count,
+				lt_result,
+				lt_settings->hw_lane_settings[0].VOLTAGE_SWING,
+				lt_settings->hw_lane_settings[0].PRE_EMPHASIS,
+				lt_spread);
+}
+
+uint8_t dp_initialize_scrambling_data_symbols(
+	struct dc_link *link,
+	enum dc_dp_training_pattern pattern)
+{
+	uint8_t disable_scrabled_data_symbols = 0;
+
+	switch (pattern) {
+	case DP_TRAINING_PATTERN_SEQUENCE_1:
+	case DP_TRAINING_PATTERN_SEQUENCE_2:
+	case DP_TRAINING_PATTERN_SEQUENCE_3:
+		disable_scrabled_data_symbols = 1;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_4:
+	case DP_128b_132b_TPS1:
+	case DP_128b_132b_TPS2:
+		disable_scrabled_data_symbols = 0;
+		break;
+	default:
+		ASSERT(0);
+		DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
+			__func__, pattern);
+		break;
+	}
+	return disable_scrabled_data_symbols;
+}
+
+enum dpcd_training_patterns
+	dp_training_pattern_to_dpcd_training_pattern(
+	struct dc_link *link,
+	enum dc_dp_training_pattern pattern)
+{
+	enum dpcd_training_patterns dpcd_tr_pattern =
+	DPCD_TRAINING_PATTERN_VIDEOIDLE;
+
+	switch (pattern) {
+	case DP_TRAINING_PATTERN_SEQUENCE_1:
+		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_1;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_2:
+		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_2;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_3:
+		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_3;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_4:
+		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_4;
+		break;
+	case DP_128b_132b_TPS1:
+		dpcd_tr_pattern = DPCD_128b_132b_TPS1;
+		break;
+	case DP_128b_132b_TPS2:
+		dpcd_tr_pattern = DPCD_128b_132b_TPS2;
+		break;
+	case DP_128b_132b_TPS2_CDS:
+		dpcd_tr_pattern = DPCD_128b_132b_TPS2_CDS;
+		break;
+	case DP_TRAINING_PATTERN_VIDEOIDLE:
+		dpcd_tr_pattern = DPCD_TRAINING_PATTERN_VIDEOIDLE;
+		break;
+	default:
+		ASSERT(0);
+		DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
+			__func__, pattern);
+		break;
+	}
+
+	return dpcd_tr_pattern;
+}
+
+static uint8_t get_nibble_at_index(const uint8_t *buf,
+	uint32_t index)
+{
+	uint8_t nibble;
+	nibble = buf[index / 2];
+
+	if (index % 2)
+		nibble >>= 4;
+	else
+		nibble &= 0x0F;
+
+	return nibble;
+}
+
+void dp_wait_for_training_aux_rd_interval(
+	struct dc_link *link,
+	uint32_t wait_in_micro_secs)
+{
+	if (wait_in_micro_secs > 1000)
+		msleep(wait_in_micro_secs/1000);
+	else
+		udelay(wait_in_micro_secs);
+
+	DC_LOG_HW_LINK_TRAINING("%s:\n wait = %d\n",
+		__func__,
+		wait_in_micro_secs);
+}
+
+/* maximum pre emphasis level allowed for each voltage swing level*/
+static const enum dc_pre_emphasis voltage_swing_to_pre_emphasis[] = {
+		PRE_EMPHASIS_LEVEL3,
+		PRE_EMPHASIS_LEVEL2,
+		PRE_EMPHASIS_LEVEL1,
+		PRE_EMPHASIS_DISABLED };
+
+static enum dc_pre_emphasis get_max_pre_emphasis_for_voltage_swing(
+	enum dc_voltage_swing voltage)
+{
+	enum dc_pre_emphasis pre_emphasis;
+	pre_emphasis = PRE_EMPHASIS_MAX_LEVEL;
+
+	if (voltage <= VOLTAGE_SWING_MAX_LEVEL)
+		pre_emphasis = voltage_swing_to_pre_emphasis[voltage];
+
+	return pre_emphasis;
+
+}
+
+static void maximize_lane_settings(const struct link_training_settings *lt_settings,
+		struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX])
+{
+	uint32_t lane;
+	struct dc_lane_settings max_requested;
+
+	max_requested.VOLTAGE_SWING = lane_settings[0].VOLTAGE_SWING;
+	max_requested.PRE_EMPHASIS = lane_settings[0].PRE_EMPHASIS;
+	max_requested.FFE_PRESET = lane_settings[0].FFE_PRESET;
+
+	/* Determine what the maximum of the requested settings are*/
+	for (lane = 1; lane < lt_settings->link_settings.lane_count; lane++) {
+		if (lane_settings[lane].VOLTAGE_SWING > max_requested.VOLTAGE_SWING)
+			max_requested.VOLTAGE_SWING = lane_settings[lane].VOLTAGE_SWING;
+
+		if (lane_settings[lane].PRE_EMPHASIS > max_requested.PRE_EMPHASIS)
+			max_requested.PRE_EMPHASIS = lane_settings[lane].PRE_EMPHASIS;
+		if (lane_settings[lane].FFE_PRESET.settings.level >
+				max_requested.FFE_PRESET.settings.level)
+			max_requested.FFE_PRESET.settings.level =
+					lane_settings[lane].FFE_PRESET.settings.level;
+	}
+
+	/* make sure the requested settings are
+	 * not higher than maximum settings*/
+	if (max_requested.VOLTAGE_SWING > VOLTAGE_SWING_MAX_LEVEL)
+		max_requested.VOLTAGE_SWING = VOLTAGE_SWING_MAX_LEVEL;
+
+	if (max_requested.PRE_EMPHASIS > PRE_EMPHASIS_MAX_LEVEL)
+		max_requested.PRE_EMPHASIS = PRE_EMPHASIS_MAX_LEVEL;
+	if (max_requested.FFE_PRESET.settings.level > DP_FFE_PRESET_MAX_LEVEL)
+		max_requested.FFE_PRESET.settings.level = DP_FFE_PRESET_MAX_LEVEL;
+
+	/* make sure the pre-emphasis matches the voltage swing*/
+	if (max_requested.PRE_EMPHASIS >
+		get_max_pre_emphasis_for_voltage_swing(
+			max_requested.VOLTAGE_SWING))
+		max_requested.PRE_EMPHASIS =
+		get_max_pre_emphasis_for_voltage_swing(
+			max_requested.VOLTAGE_SWING);
+
+	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+		lane_settings[lane].VOLTAGE_SWING = max_requested.VOLTAGE_SWING;
+		lane_settings[lane].PRE_EMPHASIS = max_requested.PRE_EMPHASIS;
+		lane_settings[lane].FFE_PRESET = max_requested.FFE_PRESET;
+	}
+}
+
+void dp_hw_to_dpcd_lane_settings(
+		const struct link_training_settings *lt_settings,
+		const struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
+		union dpcd_training_lane dpcd_lane_settings[LANE_COUNT_DP_MAX])
+{
+	uint8_t lane = 0;
+
+	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_8b_10b_ENCODING) {
+			dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET =
+					(uint8_t)(hw_lane_settings[lane].VOLTAGE_SWING);
+			dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET =
+					(uint8_t)(hw_lane_settings[lane].PRE_EMPHASIS);
+			dpcd_lane_settings[lane].bits.MAX_SWING_REACHED =
+					(hw_lane_settings[lane].VOLTAGE_SWING ==
+							VOLTAGE_SWING_MAX_LEVEL ? 1 : 0);
+			dpcd_lane_settings[lane].bits.MAX_PRE_EMPHASIS_REACHED =
+					(hw_lane_settings[lane].PRE_EMPHASIS ==
+							PRE_EMPHASIS_MAX_LEVEL ? 1 : 0);
+		} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_128b_132b_ENCODING) {
+			dpcd_lane_settings[lane].tx_ffe.PRESET_VALUE =
+					hw_lane_settings[lane].FFE_PRESET.settings.level;
+		}
+	}
+}
+
+uint8_t get_dpcd_link_rate(const struct dc_link_settings *link_settings)
+{
+	uint8_t link_rate = 0;
+	enum dp_link_encoding encoding = dp_get_link_encoding_format(link_settings);
+
+	if (encoding == DP_128b_132b_ENCODING)
+		switch (link_settings->link_rate) {
+		case LINK_RATE_UHBR10:
+			link_rate = 0x1;
+			break;
+		case LINK_RATE_UHBR20:
+			link_rate = 0x2;
+			break;
+		case LINK_RATE_UHBR13_5:
+			link_rate = 0x4;
+			break;
+		default:
+			link_rate = 0;
+			break;
+		}
+	else if (encoding == DP_8b_10b_ENCODING)
+		link_rate = (uint8_t) link_settings->link_rate;
+	else
+		link_rate = 0;
+
+	return link_rate;
+}
+
+/* Only used for channel equalization */
+uint32_t dp_translate_training_aux_read_interval(uint32_t dpcd_aux_read_interval)
+{
+	unsigned int aux_rd_interval_us = 400;
+
+	switch (dpcd_aux_read_interval) {
+	case 0x01:
+		aux_rd_interval_us = 4000;
+		break;
+	case 0x02:
+		aux_rd_interval_us = 8000;
+		break;
+	case 0x03:
+		aux_rd_interval_us = 12000;
+		break;
+	case 0x04:
+		aux_rd_interval_us = 16000;
+		break;
+	case 0x05:
+		aux_rd_interval_us = 32000;
+		break;
+	case 0x06:
+		aux_rd_interval_us = 64000;
+		break;
+	default:
+		break;
+	}
+
+	return aux_rd_interval_us;
+}
+
+enum link_training_result dp_get_cr_failure(enum dc_lane_count ln_count,
+					union lane_status *dpcd_lane_status)
+{
+	enum link_training_result result = LINK_TRAINING_SUCCESS;
+
+	if (ln_count >= LANE_COUNT_ONE && !dpcd_lane_status[0].bits.CR_DONE_0)
+		result = LINK_TRAINING_CR_FAIL_LANE0;
+	else if (ln_count >= LANE_COUNT_TWO && !dpcd_lane_status[1].bits.CR_DONE_0)
+		result = LINK_TRAINING_CR_FAIL_LANE1;
+	else if (ln_count >= LANE_COUNT_FOUR && !dpcd_lane_status[2].bits.CR_DONE_0)
+		result = LINK_TRAINING_CR_FAIL_LANE23;
+	else if (ln_count >= LANE_COUNT_FOUR && !dpcd_lane_status[3].bits.CR_DONE_0)
+		result = LINK_TRAINING_CR_FAIL_LANE23;
+	return result;
+}
+
+bool is_repeater(const struct link_training_settings *lt_settings, uint32_t offset)
+{
+	return (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) && (offset != 0);
+}
+
+bool dp_is_max_vs_reached(
+	const struct link_training_settings *lt_settings)
+{
+	uint32_t lane;
+	for (lane = 0; lane <
+		(uint32_t)(lt_settings->link_settings.lane_count);
+		lane++) {
+		if (lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET
+			== VOLTAGE_SWING_MAX_LEVEL)
+			return true;
+	}
+	return false;
+
+}
+
+bool dp_is_cr_done(enum dc_lane_count ln_count,
+	union lane_status *dpcd_lane_status)
+{
+	bool done = true;
+	uint32_t lane;
+	/*LANEx_CR_DONE bits All 1's?*/
+	for (lane = 0; lane < (uint32_t)(ln_count); lane++) {
+		if (!dpcd_lane_status[lane].bits.CR_DONE_0)
+			done = false;
+	}
+	return done;
+
+}
+
+bool dp_is_ch_eq_done(enum dc_lane_count ln_count,
+		union lane_status *dpcd_lane_status)
+{
+	bool done = true;
+	uint32_t lane;
+	for (lane = 0; lane < (uint32_t)(ln_count); lane++)
+		if (!dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0)
+			done = false;
+	return done;
+}
+
+bool dp_is_symbol_locked(enum dc_lane_count ln_count,
+		union lane_status *dpcd_lane_status)
+{
+	bool locked = true;
+	uint32_t lane;
+	for (lane = 0; lane < (uint32_t)(ln_count); lane++)
+		if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0)
+			locked = false;
+	return locked;
+}
+
+bool dp_is_interlane_aligned(union lane_align_status_updated align_status)
+{
+	return align_status.bits.INTERLANE_ALIGN_DONE == 1;
+}
+
+enum link_training_result dp_check_link_loss_status(
+	struct dc_link *link,
+	const struct link_training_settings *link_training_setting)
+{
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
+	union lane_status lane_status;
+	uint8_t dpcd_buf[6] = {0};
+	uint32_t lane;
+
+	core_link_read_dpcd(
+			link,
+			DP_SINK_COUNT,
+			(uint8_t *)(dpcd_buf),
+			sizeof(dpcd_buf));
+
+	/*parse lane status*/
+	for (lane = 0; lane < link->cur_link_settings.lane_count; lane++) {
+		/*
+		 * check lanes status
+		 */
+		lane_status.raw = get_nibble_at_index(&dpcd_buf[2], lane);
+
+		if (!lane_status.bits.CHANNEL_EQ_DONE_0 ||
+			!lane_status.bits.CR_DONE_0 ||
+			!lane_status.bits.SYMBOL_LOCKED_0) {
+			/* if one of the channel equalization, clock
+			 * recovery or symbol lock is dropped
+			 * consider it as (link has been
+			 * dropped) dp sink status has changed
+			 */
+			status = LINK_TRAINING_LINK_LOSS;
+			break;
+		}
+	}
+
+	return status;
+}
+
+enum dc_status dp_get_lane_status_and_lane_adjust(
+	struct dc_link *link,
+	const struct link_training_settings *link_training_setting,
+	union lane_status ln_status[LANE_COUNT_DP_MAX],
+	union lane_align_status_updated *ln_align,
+	union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
+	uint32_t offset)
+{
+	unsigned int lane01_status_address = DP_LANE0_1_STATUS;
+	uint8_t lane_adjust_offset = 4;
+	unsigned int lane01_adjust_address;
+	uint8_t dpcd_buf[6] = {0};
+	uint32_t lane;
+	enum dc_status status;
+
+	if (is_repeater(link_training_setting, offset)) {
+		lane01_status_address =
+				DP_LANE0_1_STATUS_PHY_REPEATER1 +
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+		lane_adjust_offset = 3;
+	}
+
+	status = core_link_read_dpcd(
+		link,
+		lane01_status_address,
+		(uint8_t *)(dpcd_buf),
+		sizeof(dpcd_buf));
+
+	if (status != DC_OK) {
+		DC_LOG_HW_LINK_TRAINING("%s:\n Failed to read from address 0x%X,"
+			" keep current lane status and lane adjust unchanged",
+			__func__,
+			lane01_status_address);
+		return status;
+	}
+
+	for (lane = 0; lane <
+		(uint32_t)(link_training_setting->link_settings.lane_count);
+		lane++) {
+
+		ln_status[lane].raw =
+			get_nibble_at_index(&dpcd_buf[0], lane);
+		ln_adjust[lane].raw =
+			get_nibble_at_index(&dpcd_buf[lane_adjust_offset], lane);
+	}
+
+	ln_align->raw = dpcd_buf[2];
+
+	if (is_repeater(link_training_setting, offset)) {
+		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
+				" 0x%X Lane01Status = %x\n 0x%X Lane23Status = %x\n ",
+			__func__,
+			offset,
+			lane01_status_address, dpcd_buf[0],
+			lane01_status_address + 1, dpcd_buf[1]);
+
+		lane01_adjust_address = DP_ADJUST_REQUEST_LANE0_1_PHY_REPEATER1 +
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+
+		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
+				" 0x%X Lane01AdjustRequest = %x\n 0x%X Lane23AdjustRequest = %x\n",
+					__func__,
+					offset,
+					lane01_adjust_address,
+					dpcd_buf[lane_adjust_offset],
+					lane01_adjust_address + 1,
+					dpcd_buf[lane_adjust_offset + 1]);
+	} else {
+		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X Lane01Status = %x\n 0x%X Lane23Status = %x\n ",
+			__func__,
+			lane01_status_address, dpcd_buf[0],
+			lane01_status_address + 1, dpcd_buf[1]);
+
+		lane01_adjust_address = DP_ADJUST_REQUEST_LANE0_1;
+
+		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X Lane01AdjustRequest = %x\n 0x%X Lane23AdjustRequest = %x\n",
+			__func__,
+			lane01_adjust_address,
+			dpcd_buf[lane_adjust_offset],
+			lane01_adjust_address + 1,
+			dpcd_buf[lane_adjust_offset + 1]);
+	}
+
+	return status;
+}
+
+static void override_lane_settings(const struct link_training_settings *lt_settings,
+		struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX])
+{
+	uint32_t lane;
+
+	if (lt_settings->voltage_swing == NULL &&
+			lt_settings->pre_emphasis == NULL &&
+			lt_settings->ffe_preset == NULL &&
+			lt_settings->post_cursor2 == NULL)
+
+		return;
+
+	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+		if (lt_settings->voltage_swing)
+			lane_settings[lane].VOLTAGE_SWING = *lt_settings->voltage_swing;
+		if (lt_settings->pre_emphasis)
+			lane_settings[lane].PRE_EMPHASIS = *lt_settings->pre_emphasis;
+		if (lt_settings->post_cursor2)
+			lane_settings[lane].POST_CURSOR2 = *lt_settings->post_cursor2;
+		if (lt_settings->ffe_preset)
+			lane_settings[lane].FFE_PRESET = *lt_settings->ffe_preset;
+	}
+}
+
+void dp_get_lttpr_mode_override(struct dc_link *link, enum lttpr_mode *override)
+{
+	if (!dp_is_lttpr_present(link))
+		return;
+
+	if (link->dc->debug.lttpr_mode_override == LTTPR_MODE_TRANSPARENT) {
+		*override = LTTPR_MODE_TRANSPARENT;
+	} else if (link->dc->debug.lttpr_mode_override == LTTPR_MODE_NON_TRANSPARENT) {
+		*override = LTTPR_MODE_NON_TRANSPARENT;
+	} else if (link->dc->debug.lttpr_mode_override == LTTPR_MODE_NON_LTTPR) {
+		*override = LTTPR_MODE_NON_LTTPR;
+	}
+	DC_LOG_DC("lttpr_mode_override chose LTTPR_MODE = %d\n", (uint8_t)(*override));
+}
+
+void override_training_settings(
+		struct dc_link *link,
+		const struct dc_link_training_overrides *overrides,
+		struct link_training_settings *lt_settings)
+{
+	uint32_t lane;
+
+	/* Override link spread */
+	if (!link->dp_ss_off && overrides->downspread != NULL)
+		lt_settings->link_settings.link_spread = *overrides->downspread ?
+				LINK_SPREAD_05_DOWNSPREAD_30KHZ
+				: LINK_SPREAD_DISABLED;
+
+	/* Override lane settings */
+	if (overrides->voltage_swing != NULL)
+		lt_settings->voltage_swing = overrides->voltage_swing;
+	if (overrides->pre_emphasis != NULL)
+		lt_settings->pre_emphasis = overrides->pre_emphasis;
+	if (overrides->post_cursor2 != NULL)
+		lt_settings->post_cursor2 = overrides->post_cursor2;
+	if (overrides->ffe_preset != NULL)
+		lt_settings->ffe_preset = overrides->ffe_preset;
+	/* Override HW lane settings with BIOS forced values if present */
+	if ((link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
+			lt_settings->lttpr_mode == LTTPR_MODE_TRANSPARENT) {
+		lt_settings->voltage_swing = &link->bios_forced_drive_settings.VOLTAGE_SWING;
+		lt_settings->pre_emphasis = &link->bios_forced_drive_settings.PRE_EMPHASIS;
+		lt_settings->always_match_dpcd_with_hw_lane_settings = false;
+	}
+	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+		lt_settings->hw_lane_settings[lane].VOLTAGE_SWING =
+			lt_settings->voltage_swing != NULL ?
+			*lt_settings->voltage_swing :
+			VOLTAGE_SWING_LEVEL0;
+		lt_settings->hw_lane_settings[lane].PRE_EMPHASIS =
+			lt_settings->pre_emphasis != NULL ?
+			*lt_settings->pre_emphasis
+			: PRE_EMPHASIS_DISABLED;
+		lt_settings->hw_lane_settings[lane].POST_CURSOR2 =
+			lt_settings->post_cursor2 != NULL ?
+			*lt_settings->post_cursor2
+			: POST_CURSOR2_DISABLED;
+	}
+
+	if (lt_settings->always_match_dpcd_with_hw_lane_settings)
+		dp_hw_to_dpcd_lane_settings(lt_settings,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+
+	/* Override training timings */
+	if (overrides->cr_pattern_time != NULL)
+		lt_settings->cr_pattern_time = *overrides->cr_pattern_time;
+	if (overrides->eq_pattern_time != NULL)
+		lt_settings->eq_pattern_time = *overrides->eq_pattern_time;
+	if (overrides->pattern_for_cr != NULL)
+		lt_settings->pattern_for_cr = *overrides->pattern_for_cr;
+	if (overrides->pattern_for_eq != NULL)
+		lt_settings->pattern_for_eq = *overrides->pattern_for_eq;
+	if (overrides->enhanced_framing != NULL)
+		lt_settings->enhanced_framing = *overrides->enhanced_framing;
+	if (link->preferred_training_settings.fec_enable != NULL)
+		lt_settings->should_set_fec_ready = *link->preferred_training_settings.fec_enable;
+
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	/* Check DP tunnel LTTPR mode debug option. */
+	if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && link->dc->debug.dpia_debug.bits.force_non_lttpr)
+		lt_settings->lttpr_mode = LTTPR_MODE_NON_LTTPR;
+
+#endif
+	dp_get_lttpr_mode_override(link, &lt_settings->lttpr_mode);
+
+}
+
+enum dc_dp_training_pattern decide_cr_training_pattern(
+		const struct dc_link_settings *link_settings)
+{
+	switch (dp_get_link_encoding_format(link_settings)) {
+	case DP_8b_10b_ENCODING:
+	default:
+		return DP_TRAINING_PATTERN_SEQUENCE_1;
+	case DP_128b_132b_ENCODING:
+		return DP_128b_132b_TPS1;
+	}
+}
+
+enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link,
+		const struct dc_link_settings *link_settings)
+{
+	struct link_encoder *link_enc;
+	struct encoder_feature_support *enc_caps;
+	struct dpcd_caps *rx_caps = &link->dpcd_caps;
+	enum dc_dp_training_pattern pattern = DP_TRAINING_PATTERN_SEQUENCE_2;
+
+	link_enc = link_enc_cfg_get_link_enc(link);
+	ASSERT(link_enc);
+	enc_caps = &link_enc->features;
+
+	switch (dp_get_link_encoding_format(link_settings)) {
+	case DP_8b_10b_ENCODING:
+		if (enc_caps->flags.bits.IS_TPS4_CAPABLE &&
+				rx_caps->max_down_spread.bits.TPS4_SUPPORTED)
+			pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
+		else if (enc_caps->flags.bits.IS_TPS3_CAPABLE &&
+				rx_caps->max_ln_count.bits.TPS3_SUPPORTED)
+			pattern = DP_TRAINING_PATTERN_SEQUENCE_3;
+		else
+			pattern = DP_TRAINING_PATTERN_SEQUENCE_2;
+		break;
+	case DP_128b_132b_ENCODING:
+		pattern = DP_128b_132b_TPS2;
+		break;
+	default:
+		pattern = DP_TRAINING_PATTERN_SEQUENCE_2;
+		break;
+	}
+	return pattern;
+}
+
+enum lttpr_mode dc_link_decide_lttpr_mode(struct dc_link *link,
+		struct dc_link_settings *link_setting)
+{
+	enum dp_link_encoding encoding = dp_get_link_encoding_format(link_setting);
+
+	if (encoding == DP_8b_10b_ENCODING)
+		return dp_decide_8b_10b_lttpr_mode(link);
+	else if (encoding == DP_128b_132b_ENCODING)
+		return dp_decide_128b_132b_lttpr_mode(link);
+
+	ASSERT(0);
+	return LTTPR_MODE_NON_LTTPR;
+}
+
+void dp_decide_lane_settings(
+		const struct link_training_settings *lt_settings,
+		const union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
+		struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
+		union dpcd_training_lane dpcd_lane_settings[LANE_COUNT_DP_MAX])
+{
+	uint32_t lane;
+
+	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_8b_10b_ENCODING) {
+			hw_lane_settings[lane].VOLTAGE_SWING =
+					(enum dc_voltage_swing)(ln_adjust[lane].bits.
+							VOLTAGE_SWING_LANE);
+			hw_lane_settings[lane].PRE_EMPHASIS =
+					(enum dc_pre_emphasis)(ln_adjust[lane].bits.
+							PRE_EMPHASIS_LANE);
+		} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_128b_132b_ENCODING) {
+			hw_lane_settings[lane].FFE_PRESET.raw =
+					ln_adjust[lane].tx_ffe.PRESET_VALUE;
+		}
+	}
+	dp_hw_to_dpcd_lane_settings(lt_settings, hw_lane_settings, dpcd_lane_settings);
+
+	if (lt_settings->disallow_per_lane_settings) {
+		/* we find the maximum of the requested settings across all lanes*/
+		/* and set this maximum for all lanes*/
+		maximize_lane_settings(lt_settings, hw_lane_settings);
+		override_lane_settings(lt_settings, hw_lane_settings);
+
+		if (lt_settings->always_match_dpcd_with_hw_lane_settings)
+			dp_hw_to_dpcd_lane_settings(lt_settings, hw_lane_settings, dpcd_lane_settings);
+	}
+
+}
+
+void dp_decide_training_settings(
+		struct dc_link *link,
+		const struct dc_link_settings *link_settings,
+		struct link_training_settings *lt_settings)
+{
+	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING)
+		decide_8b_10b_training_settings(link, link_settings, lt_settings);
+	else if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING)
+		decide_128b_132b_training_settings(link, link_settings, lt_settings);
+}
+
+
+enum dc_status configure_lttpr_mode_transparent(struct dc_link *link)
+{
+	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
+
+	DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
+	return core_link_write_dpcd(link,
+			DP_PHY_REPEATER_MODE,
+			(uint8_t *)&repeater_mode,
+			sizeof(repeater_mode));
+}
+
+static enum dc_status configure_lttpr_mode_non_transparent(
+		struct dc_link *link,
+		const struct link_training_settings *lt_settings)
+{
+	/* aux timeout is already set to extended */
+	/* RESET/SET lttpr mode to enable non transparent mode */
+	uint8_t repeater_cnt;
+	uint32_t aux_interval_address;
+	uint8_t repeater_id;
+	enum dc_status result = DC_ERROR_UNEXPECTED;
+	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
+
+	enum dp_link_encoding encoding = dp_get_link_encoding_format(&lt_settings->link_settings);
+
+	if (encoding == DP_8b_10b_ENCODING) {
+		DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
+		result = core_link_write_dpcd(link,
+				DP_PHY_REPEATER_MODE,
+				(uint8_t *)&repeater_mode,
+				sizeof(repeater_mode));
+
+	}
+
+	if (result == DC_OK) {
+		link->dpcd_caps.lttpr_caps.mode = repeater_mode;
+	}
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
+
+		DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Non Transparent Mode\n", __func__);
+
+		repeater_mode = DP_PHY_REPEATER_MODE_NON_TRANSPARENT;
+		result = core_link_write_dpcd(link,
+				DP_PHY_REPEATER_MODE,
+				(uint8_t *)&repeater_mode,
+				sizeof(repeater_mode));
+
+		if (result == DC_OK) {
+			link->dpcd_caps.lttpr_caps.mode = repeater_mode;
+		}
+
+		if (encoding == DP_8b_10b_ENCODING) {
+			repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+			/* Driver does not need to train the first hop. Skip DPCD read and clear
+			 * AUX_RD_INTERVAL for DPTX-to-DPIA hop.
+			 */
+			if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)
+				link->dpcd_caps.lttpr_caps.aux_rd_interval[--repeater_cnt] = 0;
+
+			for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {
+				aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +
+						((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1));
+				core_link_read_dpcd(
+						link,
+						aux_interval_address,
+						(uint8_t *)&link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1],
+						sizeof(link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1]));
+				link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1] &= 0x7F;
+			}
+		}
+	}
+
+	return result;
+}
+
+enum dc_status dpcd_configure_lttpr_mode(struct dc_link *link, struct link_training_settings *lt_settings)
+{
+	enum dc_status status = DC_OK;
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_TRANSPARENT)
+		status = configure_lttpr_mode_transparent(link);
+
+	else if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
+		status = configure_lttpr_mode_non_transparent(link, lt_settings);
+
+	return status;
+}
+
+void repeater_training_done(struct dc_link *link, uint32_t offset)
+{
+	union dpcd_training_pattern dpcd_pattern = {0};
+
+	const uint32_t dpcd_base_lt_offset =
+			DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+	/* Set training not in progress*/
+	dpcd_pattern.v1_4.TRAINING_PATTERN_SET = DPCD_TRAINING_PATTERN_VIDEOIDLE;
+
+	core_link_write_dpcd(
+		link,
+		dpcd_base_lt_offset,
+		&dpcd_pattern.raw,
+		1);
+
+	DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Id: %d 0x%X pattern = %x\n",
+		__func__,
+		offset,
+		dpcd_base_lt_offset,
+		dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
+}
+
+static void dpcd_exit_training_mode(struct dc_link *link, enum dp_link_encoding encoding)
+{
+	uint8_t sink_status = 0;
+	uint8_t i;
+
+	/* clear training pattern set */
+	dpcd_set_training_pattern(link, DP_TRAINING_PATTERN_VIDEOIDLE);
+
+	if (encoding == DP_128b_132b_ENCODING) {
+		/* poll for intra-hop disable */
+		for (i = 0; i < 10; i++) {
+			if ((core_link_read_dpcd(link, DP_SINK_STATUS, &sink_status, 1) == DC_OK) &&
+					(sink_status & DP_INTRA_HOP_AUX_REPLY_INDICATION) == 0)
+				break;
+			udelay(1000);
+		}
+	}
+}
+
+enum dc_status dpcd_configure_channel_coding(struct dc_link *link,
+		struct link_training_settings *lt_settings)
+{
+	enum dp_link_encoding encoding =
+			dp_get_link_encoding_format(
+					&lt_settings->link_settings);
+	enum dc_status status;
+
+	status = core_link_write_dpcd(
+			link,
+			DP_MAIN_LINK_CHANNEL_CODING_SET,
+			(uint8_t *) &encoding,
+			1);
+	DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X MAIN_LINK_CHANNEL_CODING_SET = %x\n",
+					__func__,
+					DP_MAIN_LINK_CHANNEL_CODING_SET,
+					encoding);
+
+	return status;
+}
+
+void dpcd_set_training_pattern(
+	struct dc_link *link,
+	enum dc_dp_training_pattern training_pattern)
+{
+	union dpcd_training_pattern dpcd_pattern = {0};
+
+	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
+			dp_training_pattern_to_dpcd_training_pattern(
+					link, training_pattern);
+
+	core_link_write_dpcd(
+		link,
+		DP_TRAINING_PATTERN_SET,
+		&dpcd_pattern.raw,
+		1);
+
+	DC_LOG_HW_LINK_TRAINING("%s\n %x pattern = %x\n",
+		__func__,
+		DP_TRAINING_PATTERN_SET,
+		dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
+}
+
+enum dc_status dpcd_set_link_settings(
+	struct dc_link *link,
+	const struct link_training_settings *lt_settings)
+{
+	uint8_t rate;
+	enum dc_status status;
+
+	union down_spread_ctrl downspread = {0};
+	union lane_count_set lane_count_set = {0};
+
+	downspread.raw = (uint8_t)
+	(lt_settings->link_settings.link_spread);
+
+	lane_count_set.bits.LANE_COUNT_SET =
+	lt_settings->link_settings.lane_count;
+
+	lane_count_set.bits.ENHANCED_FRAMING = lt_settings->enhanced_framing;
+	lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED = 0;
+
+
+	if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
+			lt_settings->pattern_for_eq < DP_TRAINING_PATTERN_SEQUENCE_4) {
+		lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED =
+				link->dpcd_caps.max_ln_count.bits.POST_LT_ADJ_REQ_SUPPORTED;
+	}
+
+	status = core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
+		&downspread.raw, sizeof(downspread));
+
+	status = core_link_write_dpcd(link, DP_LANE_COUNT_SET,
+		&lane_count_set.raw, 1);
+
+	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 &&
+			lt_settings->link_settings.use_link_rate_set == true) {
+		rate = 0;
+		/* WA for some MUX chips that will power down with eDP and lose supported
+		 * link rate set for eDP 1.4. Source reads DPCD 0x010 again to ensure
+		 * MUX chip gets link rate set back before link training.
+		 */
+		if (link->connector_signal == SIGNAL_TYPE_EDP) {
+			uint8_t supported_link_rates[16];
+
+			core_link_read_dpcd(link, DP_SUPPORTED_LINK_RATES,
+					supported_link_rates, sizeof(supported_link_rates));
+		}
+		status = core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
+		status = core_link_write_dpcd(link, DP_LINK_RATE_SET,
+				&lt_settings->link_settings.link_rate_set, 1);
+	} else {
+		rate = get_dpcd_link_rate(&lt_settings->link_settings);
+
+		status = core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
+	}
+
+	if (rate) {
+		DC_LOG_HW_LINK_TRAINING("%s\n %x rate = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
+			__func__,
+			DP_LINK_BW_SET,
+			lt_settings->link_settings.link_rate,
+			DP_LANE_COUNT_SET,
+			lt_settings->link_settings.lane_count,
+			lt_settings->enhanced_framing,
+			DP_DOWNSPREAD_CTRL,
+			lt_settings->link_settings.link_spread);
+	} else {
+		DC_LOG_HW_LINK_TRAINING("%s\n %x rate set = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
+			__func__,
+			DP_LINK_RATE_SET,
+			lt_settings->link_settings.link_rate_set,
+			DP_LANE_COUNT_SET,
+			lt_settings->link_settings.lane_count,
+			lt_settings->enhanced_framing,
+			DP_DOWNSPREAD_CTRL,
+			lt_settings->link_settings.link_spread);
+	}
+
+	return status;
+}
+
+enum dc_status dpcd_set_lane_settings(
+	struct dc_link *link,
+	const struct link_training_settings *link_training_setting,
+	uint32_t offset)
+{
+	unsigned int lane0_set_address;
+	enum dc_status status;
+	lane0_set_address = DP_TRAINING_LANE0_SET;
+
+	if (is_repeater(link_training_setting, offset))
+		lane0_set_address = DP_TRAINING_LANE0_SET_PHY_REPEATER1 +
+		((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+
+	status = core_link_write_dpcd(link,
+		lane0_set_address,
+		(uint8_t *)(link_training_setting->dpcd_lane_settings),
+		link_training_setting->link_settings.lane_count);
+
+	if (is_repeater(link_training_setting, offset)) {
+		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n"
+				" 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
+			__func__,
+			offset,
+			lane0_set_address,
+			link_training_setting->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
+			link_training_setting->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
+			link_training_setting->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
+			link_training_setting->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
+
+	} else {
+		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
+			__func__,
+			lane0_set_address,
+			link_training_setting->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
+			link_training_setting->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
+			link_training_setting->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
+			link_training_setting->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
+	}
+
+	return status;
+}
+
+void dpcd_set_lt_pattern_and_lane_settings(
+	struct dc_link *link,
+	const struct link_training_settings *lt_settings,
+	enum dc_dp_training_pattern pattern,
+	uint32_t offset)
+{
+	uint32_t dpcd_base_lt_offset;
+	uint8_t dpcd_lt_buffer[5] = {0};
+	union dpcd_training_pattern dpcd_pattern = {0};
+	uint32_t size_in_bytes;
+	bool edp_workaround = false; /* TODO link_prop.INTERNAL */
+	dpcd_base_lt_offset = DP_TRAINING_PATTERN_SET;
+
+	if (is_repeater(lt_settings, offset))
+		dpcd_base_lt_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
+			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+
+	/*****************************************************************
+	* DpcdAddress_TrainingPatternSet
+	*****************************************************************/
+	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
+		dp_training_pattern_to_dpcd_training_pattern(link, pattern);
+
+	dpcd_pattern.v1_4.SCRAMBLING_DISABLE =
+		dp_initialize_scrambling_data_symbols(link, pattern);
+
+	dpcd_lt_buffer[DP_TRAINING_PATTERN_SET - DP_TRAINING_PATTERN_SET]
+		= dpcd_pattern.raw;
+
+	if (is_repeater(lt_settings, offset)) {
+		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n 0x%X pattern = %x\n",
+			__func__,
+			offset,
+			dpcd_base_lt_offset,
+			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
+	} else {
+		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X pattern = %x\n",
+			__func__,
+			dpcd_base_lt_offset,
+			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
+	}
+
+	/* concatenate everything into one buffer*/
+	size_in_bytes = lt_settings->link_settings.lane_count *
+			sizeof(lt_settings->dpcd_lane_settings[0]);
+
+	 // 0x00103 - 0x00102
+	memmove(
+		&dpcd_lt_buffer[DP_TRAINING_LANE0_SET - DP_TRAINING_PATTERN_SET],
+		lt_settings->dpcd_lane_settings,
+		size_in_bytes);
+
+	if (is_repeater(lt_settings, offset)) {
+		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_128b_132b_ENCODING)
+			DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
+					" 0x%X TX_FFE_PRESET_VALUE = %x\n",
+					__func__,
+					offset,
+					dpcd_base_lt_offset,
+					lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
+		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_8b_10b_ENCODING)
+		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
+				" 0x%X VS set = %x PE set = %x max VS Reached = %x  max PE Reached = %x\n",
+			__func__,
+			offset,
+			dpcd_base_lt_offset,
+			lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
+			lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
+			lt_settings->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
+			lt_settings->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
+	} else {
+		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_128b_132b_ENCODING)
+			DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X TX_FFE_PRESET_VALUE = %x\n",
+					__func__,
+					dpcd_base_lt_offset,
+					lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
+		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_8b_10b_ENCODING)
+			DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
+					__func__,
+					dpcd_base_lt_offset,
+					lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET,
+					lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET,
+					lt_settings->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
+					lt_settings->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
+	}
+	if (edp_workaround) {
+		/* for eDP write in 2 parts because the 5-byte burst is
+		* causing issues on some eDP panels (EPR#366724)
+		*/
+		core_link_write_dpcd(
+			link,
+			DP_TRAINING_PATTERN_SET,
+			&dpcd_pattern.raw,
+			sizeof(dpcd_pattern.raw));
+
+		core_link_write_dpcd(
+			link,
+			DP_TRAINING_LANE0_SET,
+			(uint8_t *)(lt_settings->dpcd_lane_settings),
+			size_in_bytes);
+
+	} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+			DP_128b_132b_ENCODING) {
+		core_link_write_dpcd(
+				link,
+				dpcd_base_lt_offset,
+				dpcd_lt_buffer,
+				sizeof(dpcd_lt_buffer));
+	} else
+		/* write it all in (1 + number-of-lanes)-byte burst*/
+		core_link_write_dpcd(
+				link,
+				dpcd_base_lt_offset,
+				dpcd_lt_buffer,
+				size_in_bytes + sizeof(dpcd_pattern.raw));
+}
+
+void start_clock_recovery_pattern_early(struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings,
+		uint32_t offset)
+{
+	DC_LOG_HW_LINK_TRAINING("%s\n GPU sends TPS1. Wait 400us.\n",
+			__func__);
+	dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_cr, offset);
+	dp_set_hw_lane_settings(link, link_res, lt_settings, offset);
+	udelay(400);
+}
+
+void dp_set_hw_test_pattern(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	enum dp_test_pattern test_pattern,
+	uint8_t *custom_pattern,
+	uint32_t custom_pattern_size)
+{
+	const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
+	struct encoder_set_dp_phy_pattern_param pattern_param = {0};
+
+	pattern_param.dp_phy_pattern = test_pattern;
+	pattern_param.custom_pattern = custom_pattern;
+	pattern_param.custom_pattern_size = custom_pattern_size;
+	pattern_param.dp_panel_mode = dp_get_panel_mode(link);
+
+	if (link_hwss->ext.set_dp_link_test_pattern)
+		link_hwss->ext.set_dp_link_test_pattern(link, link_res, &pattern_param);
+}
+
+bool dp_set_hw_training_pattern(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	enum dc_dp_training_pattern pattern,
+	uint32_t offset)
+{
+	enum dp_test_pattern test_pattern = DP_TEST_PATTERN_UNSUPPORTED;
+
+	switch (pattern) {
+	case DP_TRAINING_PATTERN_SEQUENCE_1:
+		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN1;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_2:
+		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN2;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_3:
+		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN3;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_4:
+		test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN4;
+		break;
+	case DP_128b_132b_TPS1:
+		test_pattern = DP_TEST_PATTERN_128b_132b_TPS1_TRAINING_MODE;
+		break;
+	case DP_128b_132b_TPS2:
+		test_pattern = DP_TEST_PATTERN_128b_132b_TPS2_TRAINING_MODE;
+		break;
+	default:
+		break;
+	}
+
+	dp_set_hw_test_pattern(link, link_res, test_pattern, NULL, 0);
+
+	return true;
+}
+
+static bool perform_post_lt_adj_req_sequence(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	enum dc_lane_count lane_count =
+	lt_settings->link_settings.lane_count;
+
+	uint32_t adj_req_count;
+	uint32_t adj_req_timer;
+	bool req_drv_setting_changed;
+	uint32_t lane;
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+
+	req_drv_setting_changed = false;
+	for (adj_req_count = 0; adj_req_count < POST_LT_ADJ_REQ_LIMIT;
+	adj_req_count++) {
+
+		req_drv_setting_changed = false;
+
+		for (adj_req_timer = 0;
+			adj_req_timer < POST_LT_ADJ_REQ_TIMEOUT;
+			adj_req_timer++) {
+
+			dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				DPRX);
+
+			if (dpcd_lane_status_updated.bits.
+					POST_LT_ADJ_REQ_IN_PROGRESS == 0)
+				return true;
+
+			if (!dp_is_cr_done(lane_count, dpcd_lane_status))
+				return false;
+
+			if (!dp_is_ch_eq_done(lane_count, dpcd_lane_status) ||
+					!dp_is_symbol_locked(lane_count, dpcd_lane_status) ||
+					!dp_is_interlane_aligned(dpcd_lane_status_updated))
+				return false;
+
+			for (lane = 0; lane < (uint32_t)(lane_count); lane++) {
+
+				if (lt_settings->
+				dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET !=
+				dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_LANE ||
+				lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET !=
+				dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_LANE) {
+
+					req_drv_setting_changed = true;
+					break;
+				}
+			}
+
+			if (req_drv_setting_changed) {
+				dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+						lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+
+				dc_link_dp_set_drive_settings(link,
+						link_res,
+						lt_settings);
+				break;
+			}
+
+			msleep(1);
+		}
+
+		if (!req_drv_setting_changed) {
+			DC_LOG_WARNING("%s: Post Link Training Adjust Request Timed out\n",
+				__func__);
+
+			ASSERT(0);
+			return true;
+		}
+	}
+	DC_LOG_WARNING("%s: Post Link Training Adjust Request limit reached\n",
+		__func__);
+
+	ASSERT(0);
+	return true;
+
+}
+
+static enum link_training_result dp_transition_to_video_idle(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings,
+	enum link_training_result status)
+{
+	union lane_count_set lane_count_set = {0};
+
+	/* 4. mainlink output idle pattern*/
+	dp_set_hw_test_pattern(link, link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0);
+
+	/*
+	 * 5. post training adjust if required
+	 * If the upstream DPTX and downstream DPRX both support TPS4,
+	 * TPS4 must be used instead of POST_LT_ADJ_REQ.
+	 */
+	if (link->dpcd_caps.max_ln_count.bits.POST_LT_ADJ_REQ_SUPPORTED != 1 ||
+			lt_settings->pattern_for_eq >= DP_TRAINING_PATTERN_SEQUENCE_4) {
+		/* delay 5ms after Main Link output idle pattern and then check
+		 * DPCD 0202h.
+		 */
+		if (link->connector_signal != SIGNAL_TYPE_EDP && status == LINK_TRAINING_SUCCESS) {
+			msleep(5);
+			status = dp_check_link_loss_status(link, lt_settings);
+		}
+		return status;
+	}
+
+	if (status == LINK_TRAINING_SUCCESS &&
+		perform_post_lt_adj_req_sequence(link, link_res, lt_settings) == false)
+		status = LINK_TRAINING_LQA_FAIL;
+
+	lane_count_set.bits.LANE_COUNT_SET = lt_settings->link_settings.lane_count;
+	lane_count_set.bits.ENHANCED_FRAMING = lt_settings->enhanced_framing;
+	lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED = 0;
+
+	core_link_write_dpcd(
+		link,
+		DP_LANE_COUNT_SET,
+		&lane_count_set.raw,
+		sizeof(lane_count_set));
+
+	return status;
+}
+
+enum link_training_result dp_perform_link_training(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_settings,
+	bool skip_video_pattern)
+{
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
+	struct link_training_settings lt_settings = {0};
+	enum dp_link_encoding encoding =
+			dp_get_link_encoding_format(link_settings);
+
+	/* decide training settings */
+	dp_decide_training_settings(
+			link,
+			link_settings,
+			&lt_settings);
+
+	override_training_settings(
+			link,
+			&link->preferred_training_settings,
+			&lt_settings);
+
+	/* reset previous training states */
+	dpcd_exit_training_mode(link, encoding);
+
+	/* configure link prior to entering training mode */
+	dpcd_configure_lttpr_mode(link, &lt_settings);
+	dp_set_fec_ready(link, link_res, lt_settings.should_set_fec_ready);
+	dpcd_configure_channel_coding(link, &lt_settings);
+
+	/* enter training mode:
+	 * Per DP specs starting from here, DPTX device shall not issue
+	 * Non-LT AUX transactions inside training mode.
+	 */
+	if ((link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && encoding == DP_8b_10b_ENCODING)
+		status = dp_perform_fixed_vs_pe_training_sequence(link, link_res, &lt_settings);
+	else if (encoding == DP_8b_10b_ENCODING)
+		status = dp_perform_8b_10b_link_training(link, link_res, &lt_settings);
+	else if (encoding == DP_128b_132b_ENCODING)
+		status = dp_perform_128b_132b_link_training(link, link_res, &lt_settings);
+	else
+		ASSERT(0);
+
+	/* exit training mode */
+	dpcd_exit_training_mode(link, encoding);
+
+	/* switch to video idle */
+	if ((status == LINK_TRAINING_SUCCESS) || !skip_video_pattern)
+		status = dp_transition_to_video_idle(link,
+				link_res,
+				&lt_settings,
+				status);
+
+	/* dump debug data */
+	dp_log_training_result(link, &lt_settings, status);
+	if (status != LINK_TRAINING_SUCCESS)
+		link->ctx->dc->debug_data.ltFailCount++;
+	return status;
+}
+
+bool perform_link_training_with_retries(
+	const struct dc_link_settings *link_setting,
+	bool skip_video_pattern,
+	int attempts,
+	struct pipe_ctx *pipe_ctx,
+	enum signal_type signal,
+	bool do_fallback)
+{
+	int j;
+	uint8_t delay_between_attempts = LINK_TRAINING_RETRY_DELAY;
+	struct dc_stream_state *stream = pipe_ctx->stream;
+	struct dc_link *link = stream->link;
+	enum dp_panel_mode panel_mode = dp_get_panel_mode(link);
+	enum link_training_result status = LINK_TRAINING_CR_FAIL_LANE0;
+	struct dc_link_settings cur_link_settings = *link_setting;
+	struct dc_link_settings max_link_settings = *link_setting;
+	const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
+	int fail_count = 0;
+	bool is_link_bw_low = false; /* link bandwidth < stream bandwidth */
+	bool is_link_bw_min = /* RBR x 1 */
+		(cur_link_settings.link_rate <= LINK_RATE_LOW) &&
+		(cur_link_settings.lane_count <= LANE_COUNT_ONE);
+
+	dp_trace_commit_lt_init(link);
+
+
+	if (dp_get_link_encoding_format(&cur_link_settings) == DP_8b_10b_ENCODING)
+		/* We need to do this before the link training to ensure the idle
+		 * pattern in SST mode will be sent right after the link training
+		 */
+		link_hwss->setup_stream_encoder(pipe_ctx);
+
+	dp_trace_set_lt_start_timestamp(link, false);
+	j = 0;
+	while (j < attempts && fail_count < (attempts * 10)) {
+
+		DC_LOG_HW_LINK_TRAINING("%s: Beginning link(%d) training attempt %u of %d @ rate(%d) x lane(%d)\n",
+			__func__, link->link_index, (unsigned int)j + 1, attempts, cur_link_settings.link_rate,
+			cur_link_settings.lane_count);
+
+		dp_enable_link_phy(
+			link,
+			&pipe_ctx->link_res,
+			signal,
+			pipe_ctx->clock_source->id,
+			&cur_link_settings);
+
+		if (stream->sink_patches.dppowerup_delay > 0) {
+			int delay_dp_power_up_in_ms = stream->sink_patches.dppowerup_delay;
+
+			msleep(delay_dp_power_up_in_ms);
+		}
+
+#ifdef CONFIG_DRM_AMD_DC_HDCP
+		if (panel_mode == DP_PANEL_MODE_EDP) {
+			struct cp_psp *cp_psp = &stream->ctx->cp_psp;
+
+			if (cp_psp && cp_psp->funcs.enable_assr) {
+				/* ASSR is bound to fail with unsigned PSP
+				 * verstage used during devlopment phase.
+				 * Report and continue with eDP panel mode to
+				 * perform eDP link training with right settings
+				 */
+				bool result;
+				result = cp_psp->funcs.enable_assr(cp_psp->handle, link);
+			}
+		}
+#endif
+
+		dp_set_panel_mode(link, panel_mode);
+
+		if (link->aux_access_disabled) {
+			dc_link_dp_perform_link_training_skip_aux(link, &pipe_ctx->link_res, &cur_link_settings);
+			return true;
+		} else {
+			/** @todo Consolidate USB4 DP and DPx.x training. */
+			if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) {
+				status = dc_link_dpia_perform_link_training(
+						link,
+						&pipe_ctx->link_res,
+						&cur_link_settings,
+						skip_video_pattern);
+
+				/* Transmit idle pattern once training successful. */
+				if (status == LINK_TRAINING_SUCCESS && !is_link_bw_low) {
+					dp_set_hw_test_pattern(link, &pipe_ctx->link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0);
+					// Update verified link settings to current one
+					// Because DPIA LT might fallback to lower link setting.
+					if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
+						link->verified_link_cap.link_rate = link->cur_link_settings.link_rate;
+						link->verified_link_cap.lane_count = link->cur_link_settings.lane_count;
+						dm_helpers_dp_mst_update_branch_bandwidth(link->ctx, link);
+					}
+				}
+			} else {
+				status = dp_perform_link_training(
+						link,
+						&pipe_ctx->link_res,
+						&cur_link_settings,
+						skip_video_pattern);
+			}
+
+			dp_trace_lt_total_count_increment(link, false);
+			dp_trace_lt_result_update(link, status, false);
+			dp_trace_set_lt_end_timestamp(link, false);
+			if (status == LINK_TRAINING_SUCCESS && !is_link_bw_low)
+				return true;
+		}
+
+		fail_count++;
+		dp_trace_lt_fail_count_update(link, fail_count, false);
+		if (link->ep_type == DISPLAY_ENDPOINT_PHY) {
+			/* latest link training still fail or link training is aborted
+			 * skip delay and keep PHY on
+			 */
+			if (j == (attempts - 1) || (status == LINK_TRAINING_ABORT))
+				break;
+		}
+
+		DC_LOG_WARNING("%s: Link(%d) training attempt %u of %d failed @ rate(%d) x lane(%d) : fail reason:(%d)\n",
+			__func__, link->link_index, (unsigned int)j + 1, attempts, cur_link_settings.link_rate,
+			cur_link_settings.lane_count, status);
+
+		dp_disable_link_phy(link, &pipe_ctx->link_res, signal);
+
+		/* Abort link training if failure due to sink being unplugged. */
+		if (status == LINK_TRAINING_ABORT) {
+			enum dc_connection_type type = dc_connection_none;
+
+			dc_link_detect_sink(link, &type);
+			if (type == dc_connection_none) {
+				DC_LOG_HW_LINK_TRAINING("%s: Aborting training because sink unplugged\n", __func__);
+				break;
+			}
+		}
+
+		/* Try to train again at original settings if:
+		 * - not falling back between training attempts;
+		 * - aborted previous attempt due to reasons other than sink unplug;
+		 * - successfully trained but at a link rate lower than that required by stream;
+		 * - reached minimum link bandwidth.
+		 */
+		if (!do_fallback || (status == LINK_TRAINING_ABORT) ||
+				(status == LINK_TRAINING_SUCCESS && is_link_bw_low) ||
+				is_link_bw_min) {
+			j++;
+			cur_link_settings = *link_setting;
+			delay_between_attempts += LINK_TRAINING_RETRY_DELAY;
+			is_link_bw_low = false;
+			is_link_bw_min = (cur_link_settings.link_rate <= LINK_RATE_LOW) &&
+				(cur_link_settings.lane_count <= LANE_COUNT_ONE);
+
+		} else if (do_fallback) { /* Try training at lower link bandwidth if doing fallback. */
+			uint32_t req_bw;
+			uint32_t link_bw;
+
+			decide_fallback_link_setting(link, &max_link_settings,
+					&cur_link_settings, status);
+			/* Flag if reduced link bandwidth no longer meets stream requirements or fallen back to
+			 * minimum link bandwidth.
+			 */
+			req_bw = dc_bandwidth_in_kbps_from_timing(&stream->timing);
+			link_bw = dc_link_bandwidth_kbps(link, &cur_link_settings);
+			is_link_bw_low = (req_bw > link_bw);
+			is_link_bw_min = ((cur_link_settings.link_rate <= LINK_RATE_LOW) &&
+				(cur_link_settings.lane_count <= LANE_COUNT_ONE));
+
+			if (is_link_bw_low)
+				DC_LOG_WARNING(
+					"%s: Link(%d) bandwidth too low after fallback req_bw(%d) > link_bw(%d)\n",
+					__func__, link->link_index, req_bw, link_bw);
+		}
+
+		msleep(delay_between_attempts);
+	}
+
+	return false;
+}
+
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.h
new file mode 100644
index 000000000000..376d370e3bbb
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.h
@@ -0,0 +1,179 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_DP_TRAINING_H__
+#define __DC_LINK_DP_TRAINING_H__
+#include "link.h"
+
+bool perform_link_training_with_retries(
+	const struct dc_link_settings *link_setting,
+	bool skip_video_pattern,
+	int attempts,
+	struct pipe_ctx *pipe_ctx,
+	enum signal_type signal,
+	bool do_fallback);
+
+enum link_training_result dp_perform_link_training(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		const struct dc_link_settings *link_settings,
+		bool skip_video_pattern);
+
+bool dp_set_hw_training_pattern(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		enum dc_dp_training_pattern pattern,
+		uint32_t offset);
+
+void dp_set_hw_test_pattern(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		enum dp_test_pattern test_pattern,
+		uint8_t *custom_pattern,
+		uint32_t custom_pattern_size);
+
+void dpcd_set_training_pattern(
+	struct dc_link *link,
+	enum dc_dp_training_pattern training_pattern);
+
+/* Write DPCD drive settings. */
+enum dc_status dpcd_set_lane_settings(
+	struct dc_link *link,
+	const struct link_training_settings *link_training_setting,
+	uint32_t offset);
+
+/* Write DPCD link configuration data. */
+enum dc_status dpcd_set_link_settings(
+	struct dc_link *link,
+	const struct link_training_settings *lt_settings);
+
+void dpcd_set_lt_pattern_and_lane_settings(
+	struct dc_link *link,
+	const struct link_training_settings *lt_settings,
+	enum dc_dp_training_pattern pattern,
+	uint32_t offset);
+
+/* Read training status and adjustment requests from DPCD. */
+enum dc_status dp_get_lane_status_and_lane_adjust(
+	struct dc_link *link,
+	const struct link_training_settings *link_training_setting,
+	union lane_status ln_status[LANE_COUNT_DP_MAX],
+	union lane_align_status_updated *ln_align,
+	union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
+	uint32_t offset);
+
+enum dc_status dpcd_configure_lttpr_mode(
+		struct dc_link *link,
+		struct link_training_settings *lt_settings);
+
+enum dc_status configure_lttpr_mode_transparent(struct dc_link *link);
+
+enum dc_status dpcd_configure_channel_coding(
+		struct dc_link *link,
+		struct link_training_settings *lt_settings);
+
+void repeater_training_done(struct dc_link *link, uint32_t offset);
+
+void start_clock_recovery_pattern_early(struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings,
+		uint32_t offset);
+
+void dp_decide_training_settings(
+		struct dc_link *link,
+		const struct dc_link_settings *link_settings,
+		struct link_training_settings *lt_settings);
+
+void dp_decide_lane_settings(
+	const struct link_training_settings *lt_settings,
+	const union lane_adjust ln_adjust[LANE_COUNT_DP_MAX],
+	struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
+	union dpcd_training_lane dpcd_lane_settings[LANE_COUNT_DP_MAX]);
+
+enum dc_dp_training_pattern decide_cr_training_pattern(
+		const struct dc_link_settings *link_settings);
+
+enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link,
+		const struct dc_link_settings *link_settings);
+
+void dp_get_lttpr_mode_override(struct dc_link *link,
+		enum lttpr_mode *override);
+
+void override_training_settings(
+		struct dc_link *link,
+		const struct dc_link_training_overrides *overrides,
+		struct link_training_settings *lt_settings);
+
+/* Check DPCD training status registers to detect link loss. */
+enum link_training_result dp_check_link_loss_status(
+		struct dc_link *link,
+		const struct link_training_settings *link_training_setting);
+
+bool dp_is_cr_done(enum dc_lane_count ln_count,
+	union lane_status *dpcd_lane_status);
+
+bool dp_is_ch_eq_done(enum dc_lane_count ln_count,
+	union lane_status *dpcd_lane_status);
+bool dp_is_symbol_locked(enum dc_lane_count ln_count,
+	union lane_status *dpcd_lane_status);
+bool dp_is_interlane_aligned(union lane_align_status_updated align_status);
+
+bool is_repeater(const struct link_training_settings *lt_settings, uint32_t offset);
+
+bool dp_is_max_vs_reached(
+	const struct link_training_settings *lt_settings);
+
+uint8_t get_dpcd_link_rate(const struct dc_link_settings *link_settings);
+
+enum link_training_result dp_get_cr_failure(enum dc_lane_count ln_count,
+	union lane_status *dpcd_lane_status);
+
+void dp_hw_to_dpcd_lane_settings(
+	const struct link_training_settings *lt_settings,
+	const struct dc_lane_settings hw_lane_settings[LANE_COUNT_DP_MAX],
+	union dpcd_training_lane dpcd_lane_settings[LANE_COUNT_DP_MAX]);
+
+void dp_wait_for_training_aux_rd_interval(
+	struct dc_link *link,
+	uint32_t wait_in_micro_secs);
+
+enum dpcd_training_patterns
+	dp_training_pattern_to_dpcd_training_pattern(
+	struct dc_link *link,
+	enum dc_dp_training_pattern pattern);
+
+uint8_t dp_initialize_scrambling_data_symbols(
+	struct dc_link *link,
+	enum dc_dp_training_pattern pattern);
+
+void dp_log_training_result(
+	struct dc_link *link,
+	const struct link_training_settings *lt_settings,
+	enum link_training_result status);
+
+uint32_t dp_translate_training_aux_read_interval(
+		uint32_t dpcd_aux_read_interval);
+#endif /* __DC_LINK_DP_TRAINING_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
new file mode 100644
index 000000000000..3a02ba0724c1
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
@@ -0,0 +1,258 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements dp 128b/132b link training software policies and
+ * sequences.
+ */
+#include "link_dp_training_128b_132b.h"
+#include "link_dp_training_8b_10b.h"
+#include "link_dpcd.h"
+#include "dc_link_dp.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+
+static enum dc_status dpcd_128b_132b_set_lane_settings(
+		struct dc_link *link,
+		const struct link_training_settings *link_training_setting)
+{
+	enum dc_status status = core_link_write_dpcd(link,
+			DP_TRAINING_LANE0_SET,
+			(uint8_t *)(link_training_setting->dpcd_lane_settings),
+			sizeof(link_training_setting->dpcd_lane_settings));
+
+	DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X TX_FFE_PRESET_VALUE = %x\n",
+			__func__,
+			DP_TRAINING_LANE0_SET,
+			link_training_setting->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
+	return status;
+}
+
+static void dpcd_128b_132b_get_aux_rd_interval(struct dc_link *link,
+		uint32_t *interval_in_us)
+{
+	union dp_128b_132b_training_aux_rd_interval dpcd_interval;
+	uint32_t interval_unit = 0;
+
+	dpcd_interval.raw = 0;
+	core_link_read_dpcd(link, DP_128B132B_TRAINING_AUX_RD_INTERVAL,
+			&dpcd_interval.raw, sizeof(dpcd_interval.raw));
+	interval_unit = dpcd_interval.bits.UNIT ? 1 : 2; /* 0b = 2 ms, 1b = 1 ms */
+	/* (128b/132b_TRAINING_AUX_RD_INTERVAL value + 1) *
+	 * INTERVAL_UNIT. The maximum is 256 ms
+	 */
+	*interval_in_us = (dpcd_interval.bits.VALUE + 1) * interval_unit * 1000;
+}
+
+static enum link_training_result dp_perform_128b_132b_channel_eq_done_sequence(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	uint8_t loop_count;
+	uint32_t aux_rd_interval = 0;
+	uint32_t wait_time = 0;
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+	enum dc_status status = DC_OK;
+	enum link_training_result result = LINK_TRAINING_SUCCESS;
+
+	/* Transmit 128b/132b_TPS1 over Main-Link */
+	dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_cr, DPRX);
+
+	/* Set TRAINING_PATTERN_SET to 01h */
+	dpcd_set_training_pattern(link, lt_settings->pattern_for_cr);
+
+	/* Adjust TX_FFE_PRESET_VALUE and Transmit 128b/132b_TPS2 over Main-Link */
+	dpcd_128b_132b_get_aux_rd_interval(link, &aux_rd_interval);
+	dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
+			&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
+	dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+	dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
+	dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_eq, DPRX);
+
+	/* Set loop counter to start from 1 */
+	loop_count = 1;
+
+	/* Set TRAINING_PATTERN_SET to 02h and TX_FFE_PRESET_VALUE in one AUX transaction */
+	dpcd_set_lt_pattern_and_lane_settings(link, lt_settings,
+			lt_settings->pattern_for_eq, DPRX);
+
+	/* poll for channel EQ done */
+	while (result == LINK_TRAINING_SUCCESS) {
+		dp_wait_for_training_aux_rd_interval(link, aux_rd_interval);
+		wait_time += aux_rd_interval;
+		status = dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
+				&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+		dpcd_128b_132b_get_aux_rd_interval(link, &aux_rd_interval);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+		} else if (dp_is_ch_eq_done(lt_settings->link_settings.lane_count,
+				dpcd_lane_status)) {
+			/* pass */
+			break;
+		} else if (loop_count >= lt_settings->eq_loop_count_limit) {
+			result = DP_128b_132b_MAX_LOOP_COUNT_REACHED;
+		} else if (dpcd_lane_status_updated.bits.LT_FAILED_128b_132b) {
+			result = DP_128b_132b_LT_FAILED;
+		} else {
+			dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
+			dpcd_128b_132b_set_lane_settings(link, lt_settings);
+		}
+		loop_count++;
+	}
+
+	/* poll for EQ interlane align done */
+	while (result == LINK_TRAINING_SUCCESS) {
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+		} else if (dpcd_lane_status_updated.bits.EQ_INTERLANE_ALIGN_DONE_128b_132b) {
+			/* pass */
+			break;
+		} else if (wait_time >= lt_settings->eq_wait_time_limit) {
+			result = DP_128b_132b_CHANNEL_EQ_DONE_TIMEOUT;
+		} else if (dpcd_lane_status_updated.bits.LT_FAILED_128b_132b) {
+			result = DP_128b_132b_LT_FAILED;
+		} else {
+			dp_wait_for_training_aux_rd_interval(link,
+					lt_settings->eq_pattern_time);
+			wait_time += lt_settings->eq_pattern_time;
+			status = dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
+					&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
+		}
+	}
+
+	return result;
+}
+
+static enum link_training_result dp_perform_128b_132b_cds_done_sequence(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	/* Assumption: assume hardware has transmitted eq pattern */
+	enum dc_status status = DC_OK;
+	enum link_training_result result = LINK_TRAINING_SUCCESS;
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+	uint32_t wait_time = 0;
+
+	/* initiate CDS done sequence */
+	dpcd_set_training_pattern(link, lt_settings->pattern_for_cds);
+
+	/* poll for CDS interlane align done and symbol lock */
+	while (result == LINK_TRAINING_SUCCESS) {
+		dp_wait_for_training_aux_rd_interval(link,
+				lt_settings->cds_pattern_time);
+		wait_time += lt_settings->cds_pattern_time;
+		status = dp_get_lane_status_and_lane_adjust(link, lt_settings, dpcd_lane_status,
+						&dpcd_lane_status_updated, dpcd_lane_adjust, DPRX);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+		} else if (dp_is_symbol_locked(lt_settings->link_settings.lane_count, dpcd_lane_status) &&
+				dpcd_lane_status_updated.bits.CDS_INTERLANE_ALIGN_DONE_128b_132b) {
+			/* pass */
+			break;
+		} else if (dpcd_lane_status_updated.bits.LT_FAILED_128b_132b) {
+			result = DP_128b_132b_LT_FAILED;
+		} else if (wait_time >= lt_settings->cds_wait_time_limit) {
+			result = DP_128b_132b_CDS_DONE_TIMEOUT;
+		}
+	}
+
+	return result;
+}
+
+enum link_training_result dp_perform_128b_132b_link_training(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	enum link_training_result result = LINK_TRAINING_SUCCESS;
+
+	/* TODO - DP2.0 Link: remove legacy_dp2_lt logic */
+	if (link->dc->debug.legacy_dp2_lt) {
+		struct link_training_settings legacy_settings;
+
+		decide_8b_10b_training_settings(link,
+				&lt_settings->link_settings,
+				&legacy_settings);
+		return dp_perform_8b_10b_link_training(link, link_res, &legacy_settings);
+	}
+
+	dpcd_set_link_settings(link, lt_settings);
+
+	if (result == LINK_TRAINING_SUCCESS)
+		result = dp_perform_128b_132b_channel_eq_done_sequence(link, link_res, lt_settings);
+
+	if (result == LINK_TRAINING_SUCCESS)
+		result = dp_perform_128b_132b_cds_done_sequence(link, link_res, lt_settings);
+
+	return result;
+}
+
+void decide_128b_132b_training_settings(struct dc_link *link,
+		const struct dc_link_settings *link_settings,
+		struct link_training_settings *lt_settings)
+{
+	memset(lt_settings, 0, sizeof(*lt_settings));
+
+	lt_settings->link_settings = *link_settings;
+	/* TODO: should decide link spread when populating link_settings */
+	lt_settings->link_settings.link_spread = link->dp_ss_off ? LINK_SPREAD_DISABLED :
+			LINK_SPREAD_05_DOWNSPREAD_30KHZ;
+
+	lt_settings->pattern_for_cr = decide_cr_training_pattern(link_settings);
+	lt_settings->pattern_for_eq = decide_eq_training_pattern(link, link_settings);
+	lt_settings->eq_pattern_time = 2500;
+	lt_settings->eq_wait_time_limit = 400000;
+	lt_settings->eq_loop_count_limit = 20;
+	lt_settings->pattern_for_cds = DP_128b_132b_TPS2_CDS;
+	lt_settings->cds_pattern_time = 2500;
+	lt_settings->cds_wait_time_limit = (dp_convert_to_count(
+			link->dpcd_caps.lttpr_caps.phy_repeater_cnt) + 1) * 20000;
+	lt_settings->disallow_per_lane_settings = true;
+	lt_settings->lttpr_mode = dp_decide_128b_132b_lttpr_mode(link);
+	dp_hw_to_dpcd_lane_settings(lt_settings,
+			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+}
+
+enum lttpr_mode dp_decide_128b_132b_lttpr_mode(struct dc_link *link)
+{
+	enum lttpr_mode mode = LTTPR_MODE_NON_LTTPR;
+
+	if (dp_is_lttpr_present(link))
+		mode = LTTPR_MODE_NON_TRANSPARENT;
+
+	DC_LOG_DC("128b_132b chose LTTPR_MODE %d.\n", mode);
+	return mode;
+}
+
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.h
new file mode 100644
index 000000000000..2147f24efc8b
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_DP_TRAINING_128B_132B_H__
+#define __DC_LINK_DP_TRAINING_128B_132B_H__
+#include "link_dp_training.h"
+
+enum link_training_result dp_perform_128b_132b_link_training(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings);
+
+void decide_128b_132b_training_settings(struct dc_link *link,
+		const struct dc_link_settings *link_settings,
+		struct link_training_settings *lt_settings);
+
+enum lttpr_mode dp_decide_128b_132b_lttpr_mode(struct dc_link *link);
+
+#endif /* __DC_LINK_DP_TRAINING_128B_132B_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
new file mode 100644
index 000000000000..9021f7bca166
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
@@ -0,0 +1,413 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements dp 8b/10b link training software policies and
+ * sequences.
+ */
+#include "link_dp_training_8b_10b.h"
+#include "link_dpcd.h"
+#include "dc_link_dp.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+
+static int32_t get_cr_training_aux_rd_interval(struct dc_link *link,
+		const struct dc_link_settings *link_settings)
+{
+	union training_aux_rd_interval training_rd_interval;
+	uint32_t wait_in_micro_secs = 100;
+
+	memset(&training_rd_interval, 0, sizeof(training_rd_interval));
+	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
+			link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
+		core_link_read_dpcd(
+				link,
+				DP_TRAINING_AUX_RD_INTERVAL,
+				(uint8_t *)&training_rd_interval,
+				sizeof(training_rd_interval));
+		if (training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL)
+			wait_in_micro_secs = training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL * 4000;
+	}
+	return wait_in_micro_secs;
+}
+
+static uint32_t get_eq_training_aux_rd_interval(
+	struct dc_link *link,
+	const struct dc_link_settings *link_settings)
+{
+	union training_aux_rd_interval training_rd_interval;
+
+	memset(&training_rd_interval, 0, sizeof(training_rd_interval));
+	if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
+		core_link_read_dpcd(
+				link,
+				DP_128B132B_TRAINING_AUX_RD_INTERVAL,
+				(uint8_t *)&training_rd_interval,
+				sizeof(training_rd_interval));
+	} else if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
+			link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
+		core_link_read_dpcd(
+				link,
+				DP_TRAINING_AUX_RD_INTERVAL,
+				(uint8_t *)&training_rd_interval,
+				sizeof(training_rd_interval));
+	}
+
+	switch (training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL) {
+	case 0: return 400;
+	case 1: return 4000;
+	case 2: return 8000;
+	case 3: return 12000;
+	case 4: return 16000;
+	case 5: return 32000;
+	case 6: return 64000;
+	default: return 400;
+	}
+}
+
+void decide_8b_10b_training_settings(
+	 struct dc_link *link,
+	const struct dc_link_settings *link_setting,
+	struct link_training_settings *lt_settings)
+{
+	memset(lt_settings, '\0', sizeof(struct link_training_settings));
+
+	/* Initialize link settings */
+	lt_settings->link_settings.use_link_rate_set = link_setting->use_link_rate_set;
+	lt_settings->link_settings.link_rate_set = link_setting->link_rate_set;
+	lt_settings->link_settings.link_rate = link_setting->link_rate;
+	lt_settings->link_settings.lane_count = link_setting->lane_count;
+	/* TODO hard coded to SS for now
+	 * lt_settings.link_settings.link_spread =
+	 * dal_display_path_is_ss_supported(
+	 * path_mode->display_path) ?
+	 * LINK_SPREAD_05_DOWNSPREAD_30KHZ :
+	 * LINK_SPREAD_DISABLED;
+	 */
+	lt_settings->link_settings.link_spread = link->dp_ss_off ?
+			LINK_SPREAD_DISABLED : LINK_SPREAD_05_DOWNSPREAD_30KHZ;
+	lt_settings->cr_pattern_time = get_cr_training_aux_rd_interval(link, link_setting);
+	lt_settings->eq_pattern_time = get_eq_training_aux_rd_interval(link, link_setting);
+	lt_settings->pattern_for_cr = decide_cr_training_pattern(link_setting);
+	lt_settings->pattern_for_eq = decide_eq_training_pattern(link, link_setting);
+	lt_settings->enhanced_framing = 1;
+	lt_settings->should_set_fec_ready = true;
+	lt_settings->disallow_per_lane_settings = true;
+	lt_settings->always_match_dpcd_with_hw_lane_settings = true;
+	lt_settings->lttpr_mode = dp_decide_8b_10b_lttpr_mode(link);
+	dp_hw_to_dpcd_lane_settings(lt_settings, lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+}
+
+enum lttpr_mode dp_decide_8b_10b_lttpr_mode(struct dc_link *link)
+{
+	bool is_lttpr_present = dp_is_lttpr_present(link);
+	bool vbios_lttpr_force_non_transparent = link->dc->caps.vbios_lttpr_enable;
+	bool vbios_lttpr_aware = link->dc->caps.vbios_lttpr_aware;
+
+	if (!is_lttpr_present)
+		return LTTPR_MODE_NON_LTTPR;
+
+	if (vbios_lttpr_aware) {
+		if (vbios_lttpr_force_non_transparent) {
+			DC_LOG_DC("chose LTTPR_MODE_NON_TRANSPARENT due to VBIOS DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE set to 1.\n");
+			return LTTPR_MODE_NON_TRANSPARENT;
+		} else {
+			DC_LOG_DC("chose LTTPR_MODE_NON_TRANSPARENT by default due to VBIOS not set DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE set to 1.\n");
+			return LTTPR_MODE_TRANSPARENT;
+		}
+	}
+
+	if (link->dc->config.allow_lttpr_non_transparent_mode.bits.DP1_4A &&
+			link->dc->caps.extended_aux_timeout_support) {
+		DC_LOG_DC("chose LTTPR_MODE_NON_TRANSPARENT by default and dc->config.allow_lttpr_non_transparent_mode.bits.DP1_4A set to 1.\n");
+		return LTTPR_MODE_NON_TRANSPARENT;
+	}
+
+	DC_LOG_DC("chose LTTPR_MODE_NON_LTTPR.\n");
+	return LTTPR_MODE_NON_LTTPR;
+}
+
+enum link_training_result perform_8b_10b_clock_recovery_sequence(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings,
+	uint32_t offset)
+{
+	uint32_t retries_cr;
+	uint32_t retry_count;
+	uint32_t wait_time_microsec;
+	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX];
+	union lane_align_status_updated dpcd_lane_status_updated;
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+
+	retries_cr = 0;
+	retry_count = 0;
+
+	memset(&dpcd_lane_status, '\0', sizeof(dpcd_lane_status));
+	memset(&dpcd_lane_status_updated, '\0',
+	sizeof(dpcd_lane_status_updated));
+
+	if (!link->ctx->dc->work_arounds.lt_early_cr_pattern)
+		dp_set_hw_training_pattern(link, link_res, lt_settings->pattern_for_cr, offset);
+
+	/* najeeb - The synaptics MST hub can put the LT in
+	* infinite loop by switching the VS
+	*/
+	/* between level 0 and level 1 continuously, here
+	* we try for CR lock for LinkTrainingMaxCRRetry count*/
+	while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
+		(retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
+
+
+		/* 1. call HWSS to set lane settings*/
+		dp_set_hw_lane_settings(
+				link,
+				link_res,
+				lt_settings,
+				offset);
+
+		/* 2. update DPCD of the receiver*/
+		if (!retry_count)
+			/* EPR #361076 - write as a 5-byte burst,
+			 * but only for the 1-st iteration.*/
+			dpcd_set_lt_pattern_and_lane_settings(
+					link,
+					lt_settings,
+					lt_settings->pattern_for_cr,
+					offset);
+		else
+			dpcd_set_lane_settings(
+					link,
+					lt_settings,
+					offset);
+
+		/* 3. wait receiver to lock-on*/
+		wait_time_microsec = lt_settings->cr_pattern_time;
+
+		dp_wait_for_training_aux_rd_interval(
+				link,
+				wait_time_microsec);
+
+		/* 4. Read lane status and requested drive
+		* settings as set by the sink
+		*/
+		dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				offset);
+
+		/* 5. check CR done*/
+		if (dp_is_cr_done(lane_count, dpcd_lane_status))
+			return LINK_TRAINING_SUCCESS;
+
+		/* 6. max VS reached*/
+		if ((dp_get_link_encoding_format(&lt_settings->link_settings) ==
+				DP_8b_10b_ENCODING) &&
+				dp_is_max_vs_reached(lt_settings))
+			break;
+
+		/* 7. same lane settings*/
+		/* Note: settings are the same for all lanes,
+		 * so comparing first lane is sufficient*/
+		if ((dp_get_link_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING) &&
+				lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
+						dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
+			retries_cr++;
+		else if ((dp_get_link_encoding_format(&lt_settings->link_settings) == DP_128b_132b_ENCODING) &&
+				lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE ==
+						dpcd_lane_adjust[0].tx_ffe.PRESET_VALUE)
+			retries_cr++;
+		else
+			retries_cr = 0;
+
+		/* 8. update VS/PE/PC2 in lt_settings*/
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+		retry_count++;
+	}
+
+	if (retry_count >= LINK_TRAINING_MAX_CR_RETRY) {
+		ASSERT(0);
+		DC_LOG_ERROR("%s: Link Training Error, could not get CR after %d tries. Possibly voltage swing issue",
+			__func__,
+			LINK_TRAINING_MAX_CR_RETRY);
+
+	}
+
+	return dp_get_cr_failure(lane_count, dpcd_lane_status);
+}
+
+enum link_training_result perform_8b_10b_channel_equalization_sequence(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings,
+	uint32_t offset)
+{
+	enum dc_dp_training_pattern tr_pattern;
+	uint32_t retries_ch_eq;
+	uint32_t wait_time_microsec;
+	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+
+	/* Note: also check that TPS4 is a supported feature*/
+	tr_pattern = lt_settings->pattern_for_eq;
+
+	if (is_repeater(lt_settings, offset) && dp_get_link_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING)
+		tr_pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
+
+	dp_set_hw_training_pattern(link, link_res, tr_pattern, offset);
+
+	for (retries_ch_eq = 0; retries_ch_eq <= LINK_TRAINING_MAX_RETRY_COUNT;
+		retries_ch_eq++) {
+
+		dp_set_hw_lane_settings(link, link_res, lt_settings, offset);
+
+		/* 2. update DPCD*/
+		if (!retries_ch_eq)
+			/* EPR #361076 - write as a 5-byte burst,
+			 * but only for the 1-st iteration
+			 */
+
+			dpcd_set_lt_pattern_and_lane_settings(
+				link,
+				lt_settings,
+				tr_pattern, offset);
+		else
+			dpcd_set_lane_settings(link, lt_settings, offset);
+
+		/* 3. wait for receiver to lock-on*/
+		wait_time_microsec = lt_settings->eq_pattern_time;
+
+		if (is_repeater(lt_settings, offset))
+			wait_time_microsec =
+					dp_translate_training_aux_read_interval(
+						link->dpcd_caps.lttpr_caps.aux_rd_interval[offset - 1]);
+
+		dp_wait_for_training_aux_rd_interval(
+				link,
+				wait_time_microsec);
+
+		/* 4. Read lane status and requested
+		 * drive settings as set by the sink*/
+
+		dp_get_lane_status_and_lane_adjust(
+			link,
+			lt_settings,
+			dpcd_lane_status,
+			&dpcd_lane_status_updated,
+			dpcd_lane_adjust,
+			offset);
+
+		/* 5. check CR done*/
+		if (!dp_is_cr_done(lane_count, dpcd_lane_status))
+			return dpcd_lane_status[0].bits.CR_DONE_0 ?
+					LINK_TRAINING_EQ_FAIL_CR_PARTIAL :
+					LINK_TRAINING_EQ_FAIL_CR;
+
+		/* 6. check CHEQ done*/
+		if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
+				dp_is_symbol_locked(lane_count, dpcd_lane_status) &&
+				dp_is_interlane_aligned(dpcd_lane_status_updated))
+			return LINK_TRAINING_SUCCESS;
+
+		/* 7. update VS/PE/PC2 in lt_settings*/
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+	}
+
+	return LINK_TRAINING_EQ_FAIL_EQ;
+
+}
+
+enum link_training_result dp_perform_8b_10b_link_training(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
+
+	uint8_t repeater_cnt;
+	uint8_t repeater_id;
+	uint8_t lane = 0;
+
+	if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
+		start_clock_recovery_pattern_early(link, link_res, lt_settings, DPRX);
+
+	/* 1. set link rate, lane count and spread. */
+	dpcd_set_link_settings(link, lt_settings);
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
+
+		/* 2. perform link training (set link training done
+		 *  to false is done as well)
+		 */
+		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+		for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
+				repeater_id--) {
+			status = perform_8b_10b_clock_recovery_sequence(link, link_res, lt_settings, repeater_id);
+
+			if (status != LINK_TRAINING_SUCCESS) {
+				repeater_training_done(link, repeater_id);
+				break;
+			}
+
+			status = perform_8b_10b_channel_equalization_sequence(link,
+					link_res,
+					lt_settings,
+					repeater_id);
+
+			repeater_training_done(link, repeater_id);
+
+			if (status != LINK_TRAINING_SUCCESS)
+				break;
+
+			for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+				lt_settings->dpcd_lane_settings[lane].raw = 0;
+				lt_settings->hw_lane_settings[lane].VOLTAGE_SWING = 0;
+				lt_settings->hw_lane_settings[lane].PRE_EMPHASIS = 0;
+			}
+		}
+	}
+
+	if (status == LINK_TRAINING_SUCCESS) {
+		status = perform_8b_10b_clock_recovery_sequence(link, link_res, lt_settings, DPRX);
+		if (status == LINK_TRAINING_SUCCESS) {
+			status = perform_8b_10b_channel_equalization_sequence(link,
+					link_res,
+					lt_settings,
+					DPRX);
+		}
+	}
+
+	return status;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.h
new file mode 100644
index 000000000000..d26de15ce954
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_DP_TRAINING_8B_10B_H__
+#define __DC_LINK_DP_TRAINING_8B_10B_H__
+#include "link_dp_training.h"
+
+/* to avoid infinite loop where-in the receiver
+ * switches between different VS
+ */
+#define LINK_TRAINING_MAX_CR_RETRY 100
+#define LINK_TRAINING_MAX_RETRY_COUNT 5
+
+enum link_training_result dp_perform_8b_10b_link_training(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings);
+
+enum link_training_result perform_8b_10b_clock_recovery_sequence(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings,
+	uint32_t offset);
+
+enum link_training_result perform_8b_10b_channel_equalization_sequence(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings,
+	uint32_t offset);
+
+enum lttpr_mode dp_decide_8b_10b_lttpr_mode(struct dc_link *link);
+
+void decide_8b_10b_training_settings(
+	 struct dc_link *link,
+	const struct dc_link_settings *link_setting,
+	struct link_training_settings *lt_settings);
+
+#endif /* __DC_LINK_DP_TRAINING_8B_10B_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
new file mode 100644
index 000000000000..319f0a59a3c8
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ *
+ */
+#include "link_dp_training_auxless.h"
+#include "dc_link_dp.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+bool dc_link_dp_perform_link_training_skip_aux(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_setting)
+{
+	struct link_training_settings lt_settings = {0};
+
+	dp_decide_training_settings(
+			link,
+			link_setting,
+			&lt_settings);
+	override_training_settings(
+			link,
+			&link->preferred_training_settings,
+			&lt_settings);
+
+	/* 1. Perform_clock_recovery_sequence. */
+
+	/* transmit training pattern for clock recovery */
+	dp_set_hw_training_pattern(link, link_res, lt_settings.pattern_for_cr, DPRX);
+
+	/* call HWSS to set lane settings*/
+	dp_set_hw_lane_settings(link, link_res, &lt_settings, DPRX);
+
+	/* wait receiver to lock-on*/
+	dp_wait_for_training_aux_rd_interval(link, lt_settings.cr_pattern_time);
+
+	/* 2. Perform_channel_equalization_sequence. */
+
+	/* transmit training pattern for channel equalization. */
+	dp_set_hw_training_pattern(link, link_res, lt_settings.pattern_for_eq, DPRX);
+
+	/* call HWSS to set lane settings*/
+	dp_set_hw_lane_settings(link, link_res, &lt_settings, DPRX);
+
+	/* wait receiver to lock-on. */
+	dp_wait_for_training_aux_rd_interval(link, lt_settings.eq_pattern_time);
+
+	/* 3. Perform_link_training_int. */
+
+	/* Mainlink output idle pattern. */
+	dp_set_hw_test_pattern(link, link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0);
+
+	dp_log_training_result(link, &lt_settings, LINK_TRAINING_SUCCESS);
+
+	return true;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.h
new file mode 100644
index 000000000000..413999cd03c4
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_DP_TRAINING_AUXLESS_H__
+#define __DC_LINK_DP_TRAINING_AUXLESS_H__
+#include "link_dp_training.h"
+
+bool dc_link_dp_perform_link_training_skip_aux(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_setting);
+#endif /* __DC_LINK_DP_TRAINING_AUXLESS_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c
new file mode 100644
index 000000000000..7f005d053595
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c
@@ -0,0 +1,1044 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This module implements functionality for training DPIA links.
+ */
+#include "link_dp_training_dpia.h"
+#include "dc.h"
+#include "inc/core_status.h"
+#include "dc_link.h"
+#include "dc_link_dp.h"
+#include "dpcd_defs.h"
+
+#include "link_dp_dpia.h"
+#include "link_hwss.h"
+#include "dm_helpers.h"
+#include "dmub/inc/dmub_cmd.h"
+#include "link_dpcd.h"
+#include "link_dp_training_8b_10b.h"
+#include "dc_dmub_srv.h"
+#define DC_LOGGER \
+	link->ctx->logger
+
+/* The approximate time (us) it takes to transmit 9 USB4 DP clock sync packets. */
+#define DPIA_CLK_SYNC_DELAY 16000
+
+/* Extend interval between training status checks for manual testing. */
+#define DPIA_DEBUG_EXTENDED_AUX_RD_INTERVAL_US 60000000
+
+/* SET_CONFIG message types sent by driver. */
+enum dpia_set_config_type {
+	DPIA_SET_CFG_SET_LINK = 0x01,
+	DPIA_SET_CFG_SET_PHY_TEST_MODE = 0x05,
+	DPIA_SET_CFG_SET_TRAINING = 0x18,
+	DPIA_SET_CFG_SET_VSPE = 0x19
+};
+
+/* Training stages (TS) in SET_CONFIG(SET_TRAINING) message. */
+enum dpia_set_config_ts {
+	DPIA_TS_DPRX_DONE = 0x00, /* Done training DPRX. */
+	DPIA_TS_TPS1 = 0x01,
+	DPIA_TS_TPS2 = 0x02,
+	DPIA_TS_TPS3 = 0x03,
+	DPIA_TS_TPS4 = 0x07,
+	DPIA_TS_UFP_DONE = 0xff /* Done training DPTX-to-DPIA hop. */
+};
+
+/* SET_CONFIG message data associated with messages sent by driver. */
+union dpia_set_config_data {
+	struct {
+		uint8_t mode : 1;
+		uint8_t reserved : 7;
+	} set_link;
+	struct {
+		uint8_t stage;
+	} set_training;
+	struct {
+		uint8_t swing : 2;
+		uint8_t max_swing_reached : 1;
+		uint8_t pre_emph : 2;
+		uint8_t max_pre_emph_reached : 1;
+		uint8_t reserved : 2;
+	} set_vspe;
+	uint8_t raw;
+};
+
+
+/* Configure link as prescribed in link_setting; set LTTPR mode; and
+ * Initialize link training settings.
+ * Abort link training if sink unplug detected.
+ *
+ * @param link DPIA link being trained.
+ * @param[in] link_setting Lane count, link rate and downspread control.
+ * @param[out] lt_settings Link settings and drive settings (voltage swing and pre-emphasis).
+ */
+static enum link_training_result dpia_configure_link(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		const struct dc_link_settings *link_setting,
+		struct link_training_settings *lt_settings)
+{
+	enum dc_status status;
+	bool fec_enable;
+
+	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) configuring\n - LTTPR mode(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		lt_settings->lttpr_mode);
+
+	dp_decide_training_settings(
+		link,
+		link_setting,
+		lt_settings);
+
+	dp_get_lttpr_mode_override(link, &lt_settings->lttpr_mode);
+
+	status = dpcd_configure_channel_coding(link, lt_settings);
+	if (status != DC_OK && link->is_hpd_pending)
+		return LINK_TRAINING_ABORT;
+
+	/* Configure lttpr mode */
+	status = dpcd_configure_lttpr_mode(link, lt_settings);
+	if (status != DC_OK && link->is_hpd_pending)
+		return LINK_TRAINING_ABORT;
+
+	/* Set link rate, lane count and spread. */
+	status = dpcd_set_link_settings(link, lt_settings);
+	if (status != DC_OK && link->is_hpd_pending)
+		return LINK_TRAINING_ABORT;
+
+	if (link->preferred_training_settings.fec_enable != NULL)
+		fec_enable = *link->preferred_training_settings.fec_enable;
+	else
+		fec_enable = true;
+	status = dp_set_fec_ready(link, link_res, fec_enable);
+	if (status != DC_OK && link->is_hpd_pending)
+		return LINK_TRAINING_ABORT;
+
+	return LINK_TRAINING_SUCCESS;
+}
+
+static enum dc_status core_link_send_set_config(
+	struct dc_link *link,
+	uint8_t msg_type,
+	uint8_t msg_data)
+{
+	struct set_config_cmd_payload payload;
+	enum set_config_status set_config_result = SET_CONFIG_PENDING;
+
+	/* prepare set_config payload */
+	payload.msg_type = msg_type;
+	payload.msg_data = msg_data;
+
+	if (!link->ddc->ddc_pin && !link->aux_access_disabled &&
+			(dm_helpers_dmub_set_config_sync(link->ctx,
+			link, &payload, &set_config_result) == -1)) {
+		return DC_ERROR_UNEXPECTED;
+	}
+
+	/* set_config should return ACK if successful */
+	return (set_config_result == SET_CONFIG_ACK_RECEIVED) ? DC_OK : DC_ERROR_UNEXPECTED;
+}
+
+/* Build SET_CONFIG message data payload for specified message type. */
+static uint8_t dpia_build_set_config_data(
+		enum dpia_set_config_type type,
+		struct dc_link *link,
+		struct link_training_settings *lt_settings)
+{
+	union dpia_set_config_data data;
+
+	data.raw = 0;
+
+	switch (type) {
+	case DPIA_SET_CFG_SET_LINK:
+		data.set_link.mode = lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT ? 1 : 0;
+		break;
+	case DPIA_SET_CFG_SET_PHY_TEST_MODE:
+		break;
+	case DPIA_SET_CFG_SET_VSPE:
+		/* Assume all lanes have same drive settings. */
+		data.set_vspe.swing = lt_settings->hw_lane_settings[0].VOLTAGE_SWING;
+		data.set_vspe.pre_emph = lt_settings->hw_lane_settings[0].PRE_EMPHASIS;
+		data.set_vspe.max_swing_reached =
+				lt_settings->hw_lane_settings[0].VOLTAGE_SWING == VOLTAGE_SWING_MAX_LEVEL ? 1 : 0;
+		data.set_vspe.max_pre_emph_reached =
+				lt_settings->hw_lane_settings[0].PRE_EMPHASIS == PRE_EMPHASIS_MAX_LEVEL ? 1 : 0;
+		break;
+	default:
+		ASSERT(false); /* Message type not supported by helper function. */
+		break;
+	}
+
+	return data.raw;
+}
+
+/* Convert DC training pattern to DPIA training stage. */
+static enum dc_status convert_trng_ptn_to_trng_stg(enum dc_dp_training_pattern tps, enum dpia_set_config_ts *ts)
+{
+	enum dc_status status = DC_OK;
+
+	switch (tps) {
+	case DP_TRAINING_PATTERN_SEQUENCE_1:
+		*ts = DPIA_TS_TPS1;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_2:
+		*ts = DPIA_TS_TPS2;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_3:
+		*ts = DPIA_TS_TPS3;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_4:
+		*ts = DPIA_TS_TPS4;
+		break;
+	case DP_TRAINING_PATTERN_VIDEOIDLE:
+		*ts = DPIA_TS_DPRX_DONE;
+		break;
+	default: /* TPS not supported by helper function. */
+		ASSERT(false);
+		*ts = DPIA_TS_DPRX_DONE;
+		status = DC_UNSUPPORTED_VALUE;
+		break;
+	}
+
+	return status;
+}
+
+/* Write training pattern to DPCD. */
+static enum dc_status dpcd_set_lt_pattern(
+	struct dc_link *link,
+	enum dc_dp_training_pattern pattern,
+	uint32_t hop)
+{
+	union dpcd_training_pattern dpcd_pattern = {0};
+	uint32_t dpcd_tps_offset = DP_TRAINING_PATTERN_SET;
+	enum dc_status status;
+
+	if (hop != DPRX)
+		dpcd_tps_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
+			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (hop - 1));
+
+	/* DpcdAddress_TrainingPatternSet */
+	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
+		dp_training_pattern_to_dpcd_training_pattern(link, pattern);
+
+	dpcd_pattern.v1_4.SCRAMBLING_DISABLE =
+		dp_initialize_scrambling_data_symbols(link, pattern);
+
+	if (hop != DPRX) {
+		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n 0x%X pattern = %x\n",
+			__func__,
+			hop,
+			dpcd_tps_offset,
+			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
+	} else {
+		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X pattern = %x\n",
+			__func__,
+			dpcd_tps_offset,
+			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);
+	}
+
+	status = core_link_write_dpcd(
+			link,
+			dpcd_tps_offset,
+			&dpcd_pattern.raw,
+			sizeof(dpcd_pattern.raw));
+
+	return status;
+}
+
+/* Execute clock recovery phase of link training for specified hop in display
+ * path.in non-transparent mode:
+ * - Driver issues both DPCD and SET_CONFIG transactions.
+ * - TPS1 is transmitted for any hops downstream of DPOA.
+ * - Drive (VS/PE) only transmitted for the hop immediately downstream of DPOA.
+ * - CR for the first hop (DPTX-to-DPIA) is assumed to be successful.
+ *
+ * @param link DPIA link being trained.
+ * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static enum link_training_result dpia_training_cr_non_transparent(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	enum link_training_result result = LINK_TRAINING_CR_FAIL_LANE0;
+	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
+	enum dc_status status;
+	uint32_t retries_cr = 0; /* Number of consecutive attempts with same VS or PE. */
+	uint32_t retry_count = 0;
+	uint32_t wait_time_microsec = TRAINING_AUX_RD_INTERVAL; /* From DP spec, CR read interval is always 100us. */
+	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+	uint8_t set_cfg_data;
+	enum dpia_set_config_ts ts;
+
+	repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+	/* Cap of LINK_TRAINING_MAX_CR_RETRY attempts at clock recovery.
+	 * Fix inherited from perform_clock_recovery_sequence() -
+	 * the DP equivalent of this function:
+	 * Required for Synaptics MST hub which can put the LT in
+	 * infinite loop by switching the VS between level 0 and level 1
+	 * continuously.
+	 */
+	while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
+			(retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
+
+		/* DPTX-to-DPIA */
+		if (hop == repeater_cnt) {
+			/* Send SET_CONFIG(SET_LINK:LC,LR,LTTPR) to notify DPOA that
+			 * non-transparent link training has started.
+			 * This also enables the transmission of clk_sync packets.
+			 */
+			set_cfg_data = dpia_build_set_config_data(
+					DPIA_SET_CFG_SET_LINK,
+					link,
+					lt_settings);
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_LINK,
+					set_cfg_data);
+			/* CR for this hop is considered successful as long as
+			 * SET_CONFIG message is acknowledged by DPOA.
+			 */
+			if (status == DC_OK)
+				result = LINK_TRAINING_SUCCESS;
+			else
+				result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		/* DPOA-to-x */
+		/* Instruct DPOA to transmit TPS1 then update DPCD. */
+		if (retry_count == 0) {
+			status = convert_trng_ptn_to_trng_stg(lt_settings->pattern_for_cr, &ts);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_TRAINING,
+					ts);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+			status = dpcd_set_lt_pattern(link, lt_settings->pattern_for_cr, hop);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+		}
+
+		/* Update DPOA drive settings then DPCD. DPOA does only adjusts
+		 * drive settings for hops immediately downstream.
+		 */
+		if (hop == repeater_cnt - 1) {
+			set_cfg_data = dpia_build_set_config_data(
+					DPIA_SET_CFG_SET_VSPE,
+					link,
+					lt_settings);
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_VSPE,
+					set_cfg_data);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+		}
+		status = dpcd_set_lane_settings(link, lt_settings, hop);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
+
+		/* Read status and adjustment requests from DPCD. */
+		status = dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				hop);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		/* Check if clock recovery successful. */
+		if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
+			result = LINK_TRAINING_SUCCESS;
+			break;
+		}
+
+		result = dp_get_cr_failure(lane_count, dpcd_lane_status);
+
+		if (dp_is_max_vs_reached(lt_settings))
+			break;
+
+		/* Count number of attempts with same drive settings.
+		 * Note: settings are the same for all lanes,
+		 * so comparing first lane is sufficient.
+		 */
+		if ((lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
+				dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
+				&& (lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET ==
+						dpcd_lane_adjust[0].bits.PRE_EMPHASIS_LANE))
+			retries_cr++;
+		else
+			retries_cr = 0;
+
+		/* Update VS/PE. */
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings,
+				lt_settings->dpcd_lane_settings);
+		retry_count++;
+	}
+
+	/* Abort link training if clock recovery failed due to HPD unplug. */
+	if (link->is_hpd_pending)
+		result = LINK_TRAINING_ABORT;
+
+	DC_LOG_HW_LINK_TRAINING(
+		"%s\n DPIA(%d) clock recovery\n -hop(%d)\n - result(%d)\n - retries(%d)\n - status(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		hop,
+		result,
+		retry_count,
+		status);
+
+	return result;
+}
+
+/* Execute clock recovery phase of link training in transparent LTTPR mode:
+ * - Driver only issues DPCD transactions and leaves USB4 tunneling (SET_CONFIG) messages to DPIA.
+ * - Driver writes TPS1 to DPCD to kick off training.
+ * - Clock recovery (CR) for link is handled by DPOA, which reports result to DPIA on completion.
+ * - DPIA communicates result to driver by updating CR status when driver reads DPCD.
+ *
+ * @param link DPIA link being trained.
+ * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
+ */
+static enum link_training_result dpia_training_cr_transparent(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	enum link_training_result result = LINK_TRAINING_CR_FAIL_LANE0;
+	enum dc_status status;
+	uint32_t retries_cr = 0; /* Number of consecutive attempts with same VS or PE. */
+	uint32_t retry_count = 0;
+	uint32_t wait_time_microsec = lt_settings->cr_pattern_time;
+	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+
+	/* Cap of LINK_TRAINING_MAX_CR_RETRY attempts at clock recovery.
+	 * Fix inherited from perform_clock_recovery_sequence() -
+	 * the DP equivalent of this function:
+	 * Required for Synaptics MST hub which can put the LT in
+	 * infinite loop by switching the VS between level 0 and level 1
+	 * continuously.
+	 */
+	while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
+			(retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
+
+		/* Write TPS1 (not VS or PE) to DPCD to start CR phase.
+		 * DPIA sends SET_CONFIG(SET_LINK) to notify DPOA to
+		 * start link training.
+		 */
+		if (retry_count == 0) {
+			status = dpcd_set_lt_pattern(link, lt_settings->pattern_for_cr, DPRX);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+		}
+
+		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
+
+		/* Read status and adjustment requests from DPCD. */
+		status = dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				DPRX);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		/* Check if clock recovery successful. */
+		if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
+			result = LINK_TRAINING_SUCCESS;
+			break;
+		}
+
+		result = dp_get_cr_failure(lane_count, dpcd_lane_status);
+
+		if (dp_is_max_vs_reached(lt_settings))
+			break;
+
+		/* Count number of attempts with same drive settings.
+		 * Note: settings are the same for all lanes,
+		 * so comparing first lane is sufficient.
+		 */
+		if ((lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
+				dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
+				&& (lt_settings->dpcd_lane_settings[0].bits.PRE_EMPHASIS_SET ==
+						dpcd_lane_adjust[0].bits.PRE_EMPHASIS_LANE))
+			retries_cr++;
+		else
+			retries_cr = 0;
+
+		/* Update VS/PE. */
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+		retry_count++;
+	}
+
+	/* Abort link training if clock recovery failed due to HPD unplug. */
+	if (link->is_hpd_pending)
+		result = LINK_TRAINING_ABORT;
+
+	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) clock recovery\n -hop(%d)\n - result(%d)\n - retries(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		DPRX,
+		result,
+		retry_count);
+
+	return result;
+}
+
+/* Execute clock recovery phase of link training for specified hop in display
+ * path.
+ *
+ * @param link DPIA link being trained.
+ * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static enum link_training_result dpia_training_cr_phase(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	enum link_training_result result = LINK_TRAINING_CR_FAIL_LANE0;
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
+		result = dpia_training_cr_non_transparent(link, link_res, lt_settings, hop);
+	else
+		result = dpia_training_cr_transparent(link, link_res, lt_settings);
+
+	return result;
+}
+
+/* Return status read interval during equalization phase. */
+static uint32_t dpia_get_eq_aux_rd_interval(
+		const struct dc_link *link,
+		const struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	uint32_t wait_time_microsec;
+
+	if (hop == DPRX)
+		wait_time_microsec = lt_settings->eq_pattern_time;
+	else
+		wait_time_microsec =
+				dp_translate_training_aux_read_interval(
+					link->dpcd_caps.lttpr_caps.aux_rd_interval[hop - 1]);
+
+	/* Check debug option for extending aux read interval. */
+	if (link->dc->debug.dpia_debug.bits.extend_aux_rd_interval)
+		wait_time_microsec = DPIA_DEBUG_EXTENDED_AUX_RD_INTERVAL_US;
+
+	return wait_time_microsec;
+}
+
+/* Execute equalization phase of link training for specified hop in display
+ * path in non-transparent mode:
+ * - driver issues both DPCD and SET_CONFIG transactions.
+ * - TPSx is transmitted for any hops downstream of DPOA.
+ * - Drive (VS/PE) only transmitted for the hop immediately downstream of DPOA.
+ * - EQ for the first hop (DPTX-to-DPIA) is assumed to be successful.
+ * - DPRX EQ only reported successful when both DPRX and DPIA requirements (clk sync packets sent) fulfilled.
+ *
+ * @param link DPIA link being trained.
+ * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static enum link_training_result dpia_training_eq_non_transparent(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	enum link_training_result result = LINK_TRAINING_EQ_FAIL_EQ;
+	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
+	uint32_t retries_eq = 0;
+	enum dc_status status;
+	enum dc_dp_training_pattern tr_pattern;
+	uint32_t wait_time_microsec;
+	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+	uint8_t set_cfg_data;
+	enum dpia_set_config_ts ts;
+
+	/* Training pattern is TPS4 for repeater;
+	 * TPS2/3/4 for DPRX depending on what it supports.
+	 */
+	if (hop == DPRX)
+		tr_pattern = lt_settings->pattern_for_eq;
+	else
+		tr_pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
+
+	repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+	for (retries_eq = 0; retries_eq < LINK_TRAINING_MAX_RETRY_COUNT; retries_eq++) {
+
+		/* DPTX-to-DPIA equalization always successful. */
+		if (hop == repeater_cnt) {
+			result = LINK_TRAINING_SUCCESS;
+			break;
+		}
+
+		/* Instruct DPOA to transmit TPSn then update DPCD. */
+		if (retries_eq == 0) {
+			status = convert_trng_ptn_to_trng_stg(tr_pattern, &ts);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_TRAINING,
+					ts);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+			status = dpcd_set_lt_pattern(link, tr_pattern, hop);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+		}
+
+		/* Update DPOA drive settings then DPCD. DPOA only adjusts
+		 * drive settings for hop immediately downstream.
+		 */
+		if (hop == repeater_cnt - 1) {
+			set_cfg_data = dpia_build_set_config_data(
+					DPIA_SET_CFG_SET_VSPE,
+					link,
+					lt_settings);
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_VSPE,
+					set_cfg_data);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+		}
+		status = dpcd_set_lane_settings(link, lt_settings, hop);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		/* Extend wait time on second equalisation attempt on final hop to
+		 * ensure clock sync packets have been sent.
+		 */
+		if (hop == DPRX && retries_eq == 1)
+			wait_time_microsec = max(wait_time_microsec, (uint32_t) DPIA_CLK_SYNC_DELAY);
+		else
+			wait_time_microsec = dpia_get_eq_aux_rd_interval(link, lt_settings, hop);
+
+		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
+
+		/* Read status and adjustment requests from DPCD. */
+		status = dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				hop);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		/* CR can still fail during EQ phase. Fail training if CR fails. */
+		if (!dp_is_cr_done(lane_count, dpcd_lane_status)) {
+			result = LINK_TRAINING_EQ_FAIL_CR;
+			break;
+		}
+
+		if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
+				dp_is_symbol_locked(link->cur_link_settings.lane_count, dpcd_lane_status) &&
+				dp_is_interlane_aligned(dpcd_lane_status_updated)) {
+			result =  LINK_TRAINING_SUCCESS;
+			break;
+		}
+
+		/* Update VS/PE. */
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+	}
+
+	/* Abort link training if equalization failed due to HPD unplug. */
+	if (link->is_hpd_pending)
+		result = LINK_TRAINING_ABORT;
+
+	DC_LOG_HW_LINK_TRAINING(
+		"%s\n DPIA(%d) equalization\n - hop(%d)\n - result(%d)\n - retries(%d)\n - status(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		hop,
+		result,
+		retries_eq,
+		status);
+
+	return result;
+}
+
+/* Execute equalization phase of link training for specified hop in display
+ * path in transparent LTTPR mode:
+ * - driver only issues DPCD transactions leaves USB4 tunneling (SET_CONFIG) messages to DPIA.
+ * - driver writes TPSx to DPCD to notify DPIA that is in equalization phase.
+ * - equalization (EQ) for link is handled by DPOA, which reports result to DPIA on completion.
+ * - DPIA communicates result to driver by updating EQ status when driver reads DPCD.
+ *
+ * @param link DPIA link being trained.
+ * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static enum link_training_result dpia_training_eq_transparent(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	enum link_training_result result = LINK_TRAINING_EQ_FAIL_EQ;
+	uint32_t retries_eq = 0;
+	enum dc_status status;
+	enum dc_dp_training_pattern tr_pattern = lt_settings->pattern_for_eq;
+	uint32_t wait_time_microsec;
+	enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+	union lane_align_status_updated dpcd_lane_status_updated = {0};
+	union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+	union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+
+	wait_time_microsec = dpia_get_eq_aux_rd_interval(link, lt_settings, DPRX);
+
+	for (retries_eq = 0; retries_eq < LINK_TRAINING_MAX_RETRY_COUNT; retries_eq++) {
+
+		if (retries_eq == 0) {
+			status = dpcd_set_lt_pattern(link, tr_pattern, DPRX);
+			if (status != DC_OK) {
+				result = LINK_TRAINING_ABORT;
+				break;
+			}
+		}
+
+		dp_wait_for_training_aux_rd_interval(link, wait_time_microsec);
+
+		/* Read status and adjustment requests from DPCD. */
+		status = dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				DPRX);
+		if (status != DC_OK) {
+			result = LINK_TRAINING_ABORT;
+			break;
+		}
+
+		/* CR can still fail during EQ phase. Fail training if CR fails. */
+		if (!dp_is_cr_done(lane_count, dpcd_lane_status)) {
+			result = LINK_TRAINING_EQ_FAIL_CR;
+			break;
+		}
+
+		if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
+				dp_is_symbol_locked(link->cur_link_settings.lane_count, dpcd_lane_status)) {
+			/* Take into consideration corner case for DP 1.4a LL Compliance CTS as USB4
+			 * has to share encoders unlike DP and USBC
+			 */
+			if (dp_is_interlane_aligned(dpcd_lane_status_updated) || (link->is_automated && retries_eq)) {
+				result =  LINK_TRAINING_SUCCESS;
+				break;
+			}
+		}
+
+		/* Update VS/PE. */
+		dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+				lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+	}
+
+	/* Abort link training if equalization failed due to HPD unplug. */
+	if (link->is_hpd_pending)
+		result = LINK_TRAINING_ABORT;
+
+	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) equalization\n - hop(%d)\n - result(%d)\n - retries(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		DPRX,
+		result,
+		retries_eq);
+
+	return result;
+}
+
+/* Execute equalization phase of link training for specified hop in display
+ * path.
+ *
+ * @param link DPIA link being trained.
+ * @param lt_settings link_setting and drive settings (voltage swing and pre-emphasis).
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static enum link_training_result dpia_training_eq_phase(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	enum link_training_result result;
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
+		result = dpia_training_eq_non_transparent(link, link_res, lt_settings, hop);
+	else
+		result = dpia_training_eq_transparent(link, link_res, lt_settings);
+
+	return result;
+}
+
+/* End training of specified hop in display path. */
+static enum dc_status dpcd_clear_lt_pattern(
+	struct dc_link *link,
+	uint32_t hop)
+{
+	union dpcd_training_pattern dpcd_pattern = {0};
+	uint32_t dpcd_tps_offset = DP_TRAINING_PATTERN_SET;
+	enum dc_status status;
+
+	if (hop != DPRX)
+		dpcd_tps_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
+			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (hop - 1));
+
+	status = core_link_write_dpcd(
+			link,
+			dpcd_tps_offset,
+			&dpcd_pattern.raw,
+			sizeof(dpcd_pattern.raw));
+
+	return status;
+}
+
+/* End training of specified hop in display path.
+ *
+ * In transparent LTTPR mode:
+ * - driver clears training pattern for the specified hop in DPCD.
+ * In non-transparent LTTPR mode:
+ * - in addition to clearing training pattern, driver issues USB4 tunneling
+ * (SET_CONFIG) messages to notify DPOA when training is done for first hop
+ * (DPTX-to-DPIA) and last hop (DPRX).
+ *
+ * @param link DPIA link being trained.
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static enum link_training_result dpia_training_end(
+		struct dc_link *link,
+		struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	enum link_training_result result = LINK_TRAINING_SUCCESS;
+	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
+	enum dc_status status;
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
+
+		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+		if (hop == repeater_cnt) { /* DPTX-to-DPIA */
+			/* Send SET_CONFIG(SET_TRAINING:0xff) to notify DPOA that
+			 * DPTX-to-DPIA hop trained. No DPCD write needed for first hop.
+			 */
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_TRAINING,
+					DPIA_TS_UFP_DONE);
+			if (status != DC_OK)
+				result = LINK_TRAINING_ABORT;
+		} else { /* DPOA-to-x */
+			/* Write 0x0 to TRAINING_PATTERN_SET */
+			status = dpcd_clear_lt_pattern(link, hop);
+			if (status != DC_OK)
+				result = LINK_TRAINING_ABORT;
+		}
+
+		/* Notify DPOA that non-transparent link training of DPRX done. */
+		if (hop == DPRX && result != LINK_TRAINING_ABORT) {
+			status = core_link_send_set_config(
+					link,
+					DPIA_SET_CFG_SET_TRAINING,
+					DPIA_TS_DPRX_DONE);
+			if (status != DC_OK)
+				result = LINK_TRAINING_ABORT;
+		}
+
+	} else { /* non-LTTPR or transparent LTTPR. */
+
+		/* Write 0x0 to TRAINING_PATTERN_SET */
+		status = dpcd_clear_lt_pattern(link, hop);
+		if (status != DC_OK)
+			result = LINK_TRAINING_ABORT;
+
+	}
+
+	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) end\n - hop(%d)\n - result(%d)\n - LTTPR mode(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		hop,
+		result,
+		lt_settings->lttpr_mode);
+
+	return result;
+}
+
+/* When aborting training of specified hop in display path, clean up by:
+ * - Attempting to clear DPCD TRAINING_PATTERN_SET, LINK_BW_SET and LANE_COUNT_SET.
+ * - Sending SET_CONFIG(SET_LINK) with lane count and link rate set to 0.
+ *
+ * @param link DPIA link being trained.
+ * @param hop Hop in display path. DPRX = 0.
+ */
+static void dpia_training_abort(
+		struct dc_link *link,
+		struct link_training_settings *lt_settings,
+		uint32_t hop)
+{
+	uint8_t data = 0;
+	uint32_t dpcd_tps_offset = DP_TRAINING_PATTERN_SET;
+
+	DC_LOG_HW_LINK_TRAINING("%s\n DPIA(%d) aborting\n - LTTPR mode(%d)\n - HPD(%d)\n",
+		__func__,
+		link->link_id.enum_id - ENUM_ID_1,
+		lt_settings->lttpr_mode,
+		link->is_hpd_pending);
+
+	/* Abandon clean-up if sink unplugged. */
+	if (link->is_hpd_pending)
+		return;
+
+	if (hop != DPRX)
+		dpcd_tps_offset = DP_TRAINING_PATTERN_SET_PHY_REPEATER1 +
+			((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (hop - 1));
+
+	core_link_write_dpcd(link, dpcd_tps_offset, &data, 1);
+	core_link_write_dpcd(link, DP_LINK_BW_SET, &data, 1);
+	core_link_write_dpcd(link, DP_LANE_COUNT_SET, &data, 1);
+	core_link_send_set_config(link, DPIA_SET_CFG_SET_LINK, data);
+}
+
+enum link_training_result dc_link_dpia_perform_link_training(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_setting,
+	bool skip_video_pattern)
+{
+	enum link_training_result result;
+	struct link_training_settings lt_settings = {0};
+	uint8_t repeater_cnt = 0; /* Number of hops/repeaters in display path. */
+	int8_t repeater_id; /* Current hop. */
+
+	struct dc_link_settings link_settings = *link_setting; // non-const copy to pass in
+
+	lt_settings.lttpr_mode = dc_link_decide_lttpr_mode(link, &link_settings);
+
+	/* Configure link as prescribed in link_setting and set LTTPR mode. */
+	result = dpia_configure_link(link, link_res, link_setting, &lt_settings);
+	if (result != LINK_TRAINING_SUCCESS)
+		return result;
+
+	if (lt_settings.lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
+		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+	/* Train each hop in turn starting with the one closest to DPTX.
+	 * In transparent or non-LTTPR mode, train only the final hop (DPRX).
+	 */
+	for (repeater_id = repeater_cnt; repeater_id >= 0; repeater_id--) {
+		/* Clock recovery. */
+		result = dpia_training_cr_phase(link, link_res, &lt_settings, repeater_id);
+		if (result != LINK_TRAINING_SUCCESS)
+			break;
+
+		/* Equalization. */
+		result = dpia_training_eq_phase(link, link_res, &lt_settings, repeater_id);
+		if (result != LINK_TRAINING_SUCCESS)
+			break;
+
+		/* Stop training hop. */
+		result = dpia_training_end(link, &lt_settings, repeater_id);
+		if (result != LINK_TRAINING_SUCCESS)
+			break;
+	}
+
+	/* Double-check link status if training successful; gracefully abort
+	 * training of current hop if training failed due to message tunneling
+	 * failure; end training of hop if training ended conventionally and
+	 * falling back to lower bandwidth settings possible.
+	 */
+	if (result == LINK_TRAINING_SUCCESS) {
+		msleep(5);
+		if (!link->is_automated)
+			result = dp_check_link_loss_status(link, &lt_settings);
+	} else if (result == LINK_TRAINING_ABORT)
+		dpia_training_abort(link, &lt_settings, repeater_id);
+	else
+		dpia_training_end(link, &lt_settings, repeater_id);
+
+	return result;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.h
new file mode 100644
index 000000000000..0150f2916421
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_DP_TRAINING_DPIA_H__
+#define __DC_LINK_DP_TRAINING_DPIA_H__
+#include "link_dp_training.h"
+
+/* Train DP tunneling link for USB4 DPIA display endpoint.
+ * DPIA equivalent of dc_link_dp_perfrorm_link_training.
+ * Aborts link training upon detection of sink unplug.
+ */
+enum link_training_result dc_link_dpia_perform_link_training(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_setting,
+	bool skip_video_pattern);
+
+#endif /* __DC_LINK_DP_TRAINING_DPIA_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
new file mode 100644
index 000000000000..821f4896d77a
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
@@ -0,0 +1,578 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements 8b/10b link training specially modified to support an
+ * embedded retimer chip. This retimer chip is referred as fixed vs pe retimer.
+ * Unlike native dp connection this chip requires a modified link training
+ * protocol based on 8b/10b link training. Since this is a non standard sequence
+ * and we must support this hardware, we decided to isolate it in its own
+ * training sequence inside its own file.
+ */
+#include "link_dp_training_fixed_vs_pe_retimer.h"
+#include "link_dp_training_8b_10b.h"
+#include "link_dpcd.h"
+#include "dc_link_dp.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+
+void dp_fixed_vs_pe_read_lane_adjust(
+	struct dc_link *link,
+	union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX])
+{
+	const uint8_t vendor_lttpr_write_data_vs[3] = {0x0, 0x53, 0x63};
+	const uint8_t vendor_lttpr_write_data_pe[3] = {0x0, 0x54, 0x63};
+	const uint8_t offset = dp_convert_to_count(
+			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+	uint32_t vendor_lttpr_write_address = 0xF004F;
+	uint32_t vendor_lttpr_read_address = 0xF0053;
+	uint8_t dprx_vs = 0;
+	uint8_t dprx_pe = 0;
+	uint8_t lane;
+
+	if (offset != 0xFF) {
+		vendor_lttpr_write_address +=
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+		vendor_lttpr_read_address +=
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+	}
+
+	/* W/A to read lane settings requested by DPRX */
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_vs[0],
+			sizeof(vendor_lttpr_write_data_vs));
+	core_link_read_dpcd(
+			link,
+			vendor_lttpr_read_address,
+			&dprx_vs,
+			1);
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_pe[0],
+			sizeof(vendor_lttpr_write_data_pe));
+	core_link_read_dpcd(
+			link,
+			vendor_lttpr_read_address,
+			&dprx_pe,
+			1);
+
+	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+		dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET  = (dprx_vs >> (2 * lane)) & 0x3;
+		dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET = (dprx_pe >> (2 * lane)) & 0x3;
+	}
+}
+
+
+void dp_fixed_vs_pe_set_retimer_lane_settings(
+	struct dc_link *link,
+	const union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX],
+	uint8_t lane_count)
+{
+	const uint8_t offset = dp_convert_to_count(
+			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+	const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF};
+	uint32_t vendor_lttpr_write_address = 0xF004F;
+	uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0};
+	uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0};
+	uint8_t lane = 0;
+
+	if (offset != 0xFF) {
+		vendor_lttpr_write_address +=
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+	}
+
+	for (lane = 0; lane < lane_count; lane++) {
+		vendor_lttpr_write_data_vs[3] |=
+				dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET << (2 * lane);
+		vendor_lttpr_write_data_pe[3] |=
+				dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET << (2 * lane);
+	}
+
+	/* Force LTTPR to output desired VS and PE */
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_reset[0],
+			sizeof(vendor_lttpr_write_data_reset));
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_vs[0],
+			sizeof(vendor_lttpr_write_data_vs));
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_pe[0],
+			sizeof(vendor_lttpr_write_data_pe));
+}
+
+static enum link_training_result perform_fixed_vs_pe_nontransparent_training_sequence(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		struct link_training_settings *lt_settings)
+{
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
+	uint8_t lane = 0;
+	uint8_t toggle_rate = 0x6;
+	uint8_t target_rate = 0x6;
+	bool apply_toggle_rate_wa = false;
+	uint8_t repeater_cnt;
+	uint8_t repeater_id;
+
+	/* Fixed VS/PE specific: Force CR AUX RD Interval to at least 16ms */
+	if (lt_settings->cr_pattern_time < 16000)
+		lt_settings->cr_pattern_time = 16000;
+
+	/* Fixed VS/PE specific: Toggle link rate */
+	apply_toggle_rate_wa = (link->vendor_specific_lttpr_link_rate_wa == target_rate);
+	target_rate = get_dpcd_link_rate(&lt_settings->link_settings);
+	toggle_rate = (target_rate == 0x6) ? 0xA : 0x6;
+
+	if (apply_toggle_rate_wa)
+		lt_settings->link_settings.link_rate = toggle_rate;
+
+	if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
+		start_clock_recovery_pattern_early(link, link_res, lt_settings, DPRX);
+
+	/* 1. set link rate, lane count and spread. */
+	dpcd_set_link_settings(link, lt_settings);
+
+	/* Fixed VS/PE specific: Toggle link rate back*/
+	if (apply_toggle_rate_wa) {
+		core_link_write_dpcd(
+				link,
+				DP_LINK_BW_SET,
+				&target_rate,
+				1);
+	}
+
+	link->vendor_specific_lttpr_link_rate_wa = target_rate;
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
+
+		/* 2. perform link training (set link training done
+		 *  to false is done as well)
+		 */
+		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+
+		for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
+				repeater_id--) {
+			status = perform_8b_10b_clock_recovery_sequence(link, link_res, lt_settings, repeater_id);
+
+			if (status != LINK_TRAINING_SUCCESS) {
+				repeater_training_done(link, repeater_id);
+				break;
+			}
+
+			status = perform_8b_10b_channel_equalization_sequence(link,
+					link_res,
+					lt_settings,
+					repeater_id);
+
+			repeater_training_done(link, repeater_id);
+
+			if (status != LINK_TRAINING_SUCCESS)
+				break;
+
+			for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
+				lt_settings->dpcd_lane_settings[lane].raw = 0;
+				lt_settings->hw_lane_settings[lane].VOLTAGE_SWING = 0;
+				lt_settings->hw_lane_settings[lane].PRE_EMPHASIS = 0;
+			}
+		}
+	}
+
+	if (status == LINK_TRAINING_SUCCESS) {
+		status = perform_8b_10b_clock_recovery_sequence(link, link_res, lt_settings, DPRX);
+		if (status == LINK_TRAINING_SUCCESS) {
+			status = perform_8b_10b_channel_equalization_sequence(link,
+								       link_res,
+								       lt_settings,
+								       DPRX);
+		}
+	}
+
+	return status;
+}
+
+
+enum link_training_result dp_perform_fixed_vs_pe_training_sequence(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings)
+{
+	const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF};
+	const uint8_t offset = dp_convert_to_count(
+			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+	const uint8_t vendor_lttpr_write_data_intercept_en[4] = {0x1, 0x55, 0x63, 0x0};
+	const uint8_t vendor_lttpr_write_data_intercept_dis[4] = {0x1, 0x55, 0x63, 0x68};
+	uint32_t pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa;
+	uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0};
+	uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0};
+	uint32_t vendor_lttpr_write_address = 0xF004F;
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
+	uint8_t lane = 0;
+	union down_spread_ctrl downspread = {0};
+	union lane_count_set lane_count_set = {0};
+	uint8_t toggle_rate;
+	uint8_t rate;
+
+	/* Only 8b/10b is supported */
+	ASSERT(dp_get_link_encoding_format(&lt_settings->link_settings) ==
+			DP_8b_10b_ENCODING);
+
+	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
+		status = perform_fixed_vs_pe_nontransparent_training_sequence(link, link_res, lt_settings);
+		return status;
+	}
+
+	if (offset != 0xFF) {
+		vendor_lttpr_write_address +=
+				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
+
+		/* Certain display and cable configuration require extra delay */
+		if (offset > 2)
+			pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa * 2;
+	}
+
+	/* Vendor specific: Reset lane settings */
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_reset[0],
+			sizeof(vendor_lttpr_write_data_reset));
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_vs[0],
+			sizeof(vendor_lttpr_write_data_vs));
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_pe[0],
+			sizeof(vendor_lttpr_write_data_pe));
+
+	/* Vendor specific: Enable intercept */
+	core_link_write_dpcd(
+			link,
+			vendor_lttpr_write_address,
+			&vendor_lttpr_write_data_intercept_en[0],
+			sizeof(vendor_lttpr_write_data_intercept_en));
+
+	/* 1. set link rate, lane count and spread. */
+
+	downspread.raw = (uint8_t)(lt_settings->link_settings.link_spread);
+
+	lane_count_set.bits.LANE_COUNT_SET =
+	lt_settings->link_settings.lane_count;
+
+	lane_count_set.bits.ENHANCED_FRAMING = lt_settings->enhanced_framing;
+	lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED = 0;
+
+
+	if (lt_settings->pattern_for_eq < DP_TRAINING_PATTERN_SEQUENCE_4) {
+		lane_count_set.bits.POST_LT_ADJ_REQ_GRANTED =
+				link->dpcd_caps.max_ln_count.bits.POST_LT_ADJ_REQ_SUPPORTED;
+	}
+
+	core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
+		&downspread.raw, sizeof(downspread));
+
+	core_link_write_dpcd(link, DP_LANE_COUNT_SET,
+		&lane_count_set.raw, 1);
+
+	rate = get_dpcd_link_rate(&lt_settings->link_settings);
+
+	/* Vendor specific: Toggle link rate */
+	toggle_rate = (rate == 0x6) ? 0xA : 0x6;
+
+	if (link->vendor_specific_lttpr_link_rate_wa == rate) {
+		core_link_write_dpcd(
+				link,
+				DP_LINK_BW_SET,
+				&toggle_rate,
+				1);
+	}
+
+	link->vendor_specific_lttpr_link_rate_wa = rate;
+
+	core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
+
+	DC_LOG_HW_LINK_TRAINING("%s\n %x rate = %x\n %x lane = %x framing = %x\n %x spread = %x\n",
+		__func__,
+		DP_LINK_BW_SET,
+		lt_settings->link_settings.link_rate,
+		DP_LANE_COUNT_SET,
+		lt_settings->link_settings.lane_count,
+		lt_settings->enhanced_framing,
+		DP_DOWNSPREAD_CTRL,
+		lt_settings->link_settings.link_spread);
+
+	/* 2. Perform link training */
+
+	/* Perform Clock Recovery Sequence */
+	if (status == LINK_TRAINING_SUCCESS) {
+		const uint8_t max_vendor_dpcd_retries = 10;
+		uint32_t retries_cr;
+		uint32_t retry_count;
+		uint32_t wait_time_microsec;
+		enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+		union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX];
+		union lane_align_status_updated dpcd_lane_status_updated;
+		union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+		enum dc_status dpcd_status = DC_OK;
+		uint8_t i = 0;
+
+		retries_cr = 0;
+		retry_count = 0;
+
+		memset(&dpcd_lane_status, '\0', sizeof(dpcd_lane_status));
+		memset(&dpcd_lane_status_updated, '\0',
+		sizeof(dpcd_lane_status_updated));
+
+		while ((retries_cr < LINK_TRAINING_MAX_RETRY_COUNT) &&
+			(retry_count < LINK_TRAINING_MAX_CR_RETRY)) {
+
+
+			/* 1. call HWSS to set lane settings */
+			dp_set_hw_lane_settings(
+					link,
+					link_res,
+					lt_settings,
+					0);
+
+			/* 2. update DPCD of the receiver */
+			if (!retry_count) {
+				/* EPR #361076 - write as a 5-byte burst,
+				 * but only for the 1-st iteration.
+				 */
+				dpcd_set_lt_pattern_and_lane_settings(
+						link,
+						lt_settings,
+						lt_settings->pattern_for_cr,
+						0);
+				/* Vendor specific: Disable intercept */
+				for (i = 0; i < max_vendor_dpcd_retries; i++) {
+					msleep(pre_disable_intercept_delay_ms);
+					dpcd_status = core_link_write_dpcd(
+							link,
+							vendor_lttpr_write_address,
+							&vendor_lttpr_write_data_intercept_dis[0],
+							sizeof(vendor_lttpr_write_data_intercept_dis));
+
+					if (dpcd_status == DC_OK)
+						break;
+
+					core_link_write_dpcd(
+							link,
+							vendor_lttpr_write_address,
+							&vendor_lttpr_write_data_intercept_en[0],
+							sizeof(vendor_lttpr_write_data_intercept_en));
+				}
+			} else {
+				vendor_lttpr_write_data_vs[3] = 0;
+				vendor_lttpr_write_data_pe[3] = 0;
+
+				for (lane = 0; lane < lane_count; lane++) {
+					vendor_lttpr_write_data_vs[3] |=
+							lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET << (2 * lane);
+					vendor_lttpr_write_data_pe[3] |=
+							lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET << (2 * lane);
+				}
+
+				/* Vendor specific: Update VS and PE to DPRX requested value */
+				core_link_write_dpcd(
+						link,
+						vendor_lttpr_write_address,
+						&vendor_lttpr_write_data_vs[0],
+						sizeof(vendor_lttpr_write_data_vs));
+				core_link_write_dpcd(
+						link,
+						vendor_lttpr_write_address,
+						&vendor_lttpr_write_data_pe[0],
+						sizeof(vendor_lttpr_write_data_pe));
+
+				dpcd_set_lane_settings(
+						link,
+						lt_settings,
+						0);
+			}
+
+			/* 3. wait receiver to lock-on*/
+			wait_time_microsec = lt_settings->cr_pattern_time;
+
+			dp_wait_for_training_aux_rd_interval(
+					link,
+					wait_time_microsec);
+
+			/* 4. Read lane status and requested drive
+			 * settings as set by the sink
+			 */
+			dp_get_lane_status_and_lane_adjust(
+					link,
+					lt_settings,
+					dpcd_lane_status,
+					&dpcd_lane_status_updated,
+					dpcd_lane_adjust,
+					0);
+
+			/* 5. check CR done*/
+			if (dp_is_cr_done(lane_count, dpcd_lane_status)) {
+				status = LINK_TRAINING_SUCCESS;
+				break;
+			}
+
+			/* 6. max VS reached*/
+			if (dp_is_max_vs_reached(lt_settings))
+				break;
+
+			/* 7. same lane settings */
+			/* Note: settings are the same for all lanes,
+			 * so comparing first lane is sufficient
+			 */
+			if (lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
+					dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
+				retries_cr++;
+			else
+				retries_cr = 0;
+
+			/* 8. update VS/PE/PC2 in lt_settings*/
+			dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+					lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+			retry_count++;
+		}
+
+		if (retry_count >= LINK_TRAINING_MAX_CR_RETRY) {
+			ASSERT(0);
+			DC_LOG_ERROR("%s: Link Training Error, could not get CR after %d tries. Possibly voltage swing issue",
+				__func__,
+				LINK_TRAINING_MAX_CR_RETRY);
+
+		}
+
+		status = dp_get_cr_failure(lane_count, dpcd_lane_status);
+	}
+
+	/* Perform Channel EQ Sequence */
+	if (status == LINK_TRAINING_SUCCESS) {
+		enum dc_dp_training_pattern tr_pattern;
+		uint32_t retries_ch_eq;
+		uint32_t wait_time_microsec;
+		enum dc_lane_count lane_count = lt_settings->link_settings.lane_count;
+		union lane_align_status_updated dpcd_lane_status_updated = {0};
+		union lane_status dpcd_lane_status[LANE_COUNT_DP_MAX] = {0};
+		union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX] = {0};
+
+		/* Note: also check that TPS4 is a supported feature*/
+		tr_pattern = lt_settings->pattern_for_eq;
+
+		dp_set_hw_training_pattern(link, link_res, tr_pattern, 0);
+
+		status = LINK_TRAINING_EQ_FAIL_EQ;
+
+		for (retries_ch_eq = 0; retries_ch_eq <= LINK_TRAINING_MAX_RETRY_COUNT;
+			retries_ch_eq++) {
+
+			dp_set_hw_lane_settings(link, link_res, lt_settings, 0);
+
+			vendor_lttpr_write_data_vs[3] = 0;
+			vendor_lttpr_write_data_pe[3] = 0;
+
+			for (lane = 0; lane < lane_count; lane++) {
+				vendor_lttpr_write_data_vs[3] |=
+						lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET << (2 * lane);
+				vendor_lttpr_write_data_pe[3] |=
+						lt_settings->dpcd_lane_settings[lane].bits.PRE_EMPHASIS_SET << (2 * lane);
+			}
+
+			/* Vendor specific: Update VS and PE to DPRX requested value */
+			core_link_write_dpcd(
+					link,
+					vendor_lttpr_write_address,
+					&vendor_lttpr_write_data_vs[0],
+					sizeof(vendor_lttpr_write_data_vs));
+			core_link_write_dpcd(
+					link,
+					vendor_lttpr_write_address,
+					&vendor_lttpr_write_data_pe[0],
+					sizeof(vendor_lttpr_write_data_pe));
+
+			/* 2. update DPCD*/
+			if (!retries_ch_eq)
+				/* EPR #361076 - write as a 5-byte burst,
+				 * but only for the 1-st iteration
+				 */
+
+				dpcd_set_lt_pattern_and_lane_settings(
+					link,
+					lt_settings,
+					tr_pattern, 0);
+			else
+				dpcd_set_lane_settings(link, lt_settings, 0);
+
+			/* 3. wait for receiver to lock-on*/
+			wait_time_microsec = lt_settings->eq_pattern_time;
+
+			dp_wait_for_training_aux_rd_interval(
+					link,
+					wait_time_microsec);
+
+			/* 4. Read lane status and requested
+			 * drive settings as set by the sink
+			 */
+			dp_get_lane_status_and_lane_adjust(
+				link,
+				lt_settings,
+				dpcd_lane_status,
+				&dpcd_lane_status_updated,
+				dpcd_lane_adjust,
+				0);
+
+			/* 5. check CR done*/
+			if (!dp_is_cr_done(lane_count, dpcd_lane_status)) {
+				status = LINK_TRAINING_EQ_FAIL_CR;
+				break;
+			}
+
+			/* 6. check CHEQ done*/
+			if (dp_is_ch_eq_done(lane_count, dpcd_lane_status) &&
+					dp_is_symbol_locked(lane_count, dpcd_lane_status) &&
+					dp_is_interlane_aligned(dpcd_lane_status_updated)) {
+				status = LINK_TRAINING_SUCCESS;
+				break;
+			}
+
+			/* 7. update VS/PE/PC2 in lt_settings*/
+			dp_decide_lane_settings(lt_settings, dpcd_lane_adjust,
+					lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+		}
+	}
+
+	return status;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.h
new file mode 100644
index 000000000000..e61970e27661
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+
+#ifndef __DC_LINK_DP_FIXED_VS_PE_RETIMER_H__
+#define __DC_LINK_DP_FIXED_VS_PE_RETIMER_H__
+#include "link_dp_training.h"
+
+enum link_training_result dp_perform_fixed_vs_pe_training_sequence(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings);
+
+void dp_fixed_vs_pe_set_retimer_lane_settings(
+	struct dc_link *link,
+	const union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX],
+	uint8_t lane_count);
+
+void dp_fixed_vs_pe_read_lane_adjust(
+	struct dc_link *link,
+	union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX]);
+
+#endif /* __DC_LINK_DP_FIXED_VS_PE_RETIMER_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpcd.h b/drivers/gpu/drm/amd/display/dc/link/link_dpcd.h
index 27b08cdbb4a1..08d787a1e451 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dpcd.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpcd.h
@@ -26,6 +26,7 @@
 #ifndef __LINK_DPCD_H__
 #define __LINK_DPCD_H__
 #include "link.h"
+#include "dpcd_defs.h"
 
 enum dc_status core_link_read_dpcd(
 		struct dc_link *link,
diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h
index a7ba5bd8dc16..3610f71891a3 100644
--- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h
+++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h
@@ -133,6 +133,11 @@ static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5};
 
 static const u8 DP_SINK_BRANCH_DEV_NAME_7580[] = "7580\x80u";
 
+/*Travis*/
+static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
+/*Nutmeg*/
+static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
+
 /*MST Dock*/
 static const uint8_t SYNAPTICS_DEVICE_ID[] = "SYNA";
 
-- 
2.39.0

[PATCH 20/37] drm/amd/display: move dp phy related logic to link_dp_phy

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |   3 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |   3 +-
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 127 +--------------
 drivers/gpu/drm/amd/display/dc/dc_link.h      |   2 +
 .../display/dc/dce110/dce110_hw_sequencer.h   |   2 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_dp.h   |  19 ---
 drivers/gpu/drm/amd/display/dc/link/Makefile  |   2 +-
 .../gpu/drm/amd/display/dc/link/link_dp_phy.c | 144 ++++++++++++++++++
 .../gpu/drm/amd/display/dc/link/link_dp_phy.h |  51 +++++++
 .../amd/display/dc/link/link_dp_training.c    |   1 +
 .../dc/link/link_dp_training_128b_132b.c      |   1 +
 .../display/dc/link/link_dp_training_8b_10b.c |   1 +
 .../dc/link/link_dp_training_auxless.c        |   2 +-
 .../link_dp_training_fixed_vs_pe_retimer.c    |   1 +
 14 files changed, 210 insertions(+), 149 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_phy.h

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index ae54a9719910..704860e6ba84 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -35,6 +35,7 @@
 #include "resource.h"
 #include "dsc.h"
 #include "dc_link_dp.h"
+#include "dc_link.h"
 #include "link_hwss.h"
 #include "dc/dc_dmub_srv.h"
 
@@ -3395,7 +3396,7 @@ static int trigger_hpd_mst_set(void *data, u64 val)
 				continue;
 
 			link = aconnector->dc_link;
-			dp_receiver_power_ctrl(link, false);
+			dc_link_dp_receiver_power_ctrl(link, false);
 			drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_port->mst_mgr, false);
 			link->mst_stream_alloc_table.stream_count = 0;
 			memset(link->mst_stream_alloc_table.stream_allocations, 0,
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 6a2e0d867853..957e1bc8981b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -55,6 +55,7 @@
 #include "link/link_dp_trace.h"
 #include "link/link_hpd.h"
 #include "link/link_dp_training.h"
+#include "link/link_dp_phy.h"
 
 #include "dc/dcn30/dcn30_vpg.h"
 
@@ -2174,7 +2175,7 @@ void dc_link_blank_dp_stream(struct dc_link *link, bool hw_init)
 		}
 
 		if ((!link->wa_flags.dp_keep_receiver_powered) || hw_init)
-			dp_receiver_power_ctrl(link, false);
+			dc_link_dp_receiver_power_ctrl(link, false);
 	}
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index baf2e35d0ac6..cef89519c12e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -45,6 +45,7 @@
 #include "link/link_dp_training_fixed_vs_pe_retimer.h"
 #include "link/link_dp_training_dpia.h"
 #include "link/link_dp_training_auxless.h"
+#include "link/link_dp_phy.h"
 #include "resource.h"
 #define DC_LOGGER \
 	link->ctx->logger
@@ -139,21 +140,6 @@ uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count)
 	return 0; // invalid value
 }
 
-void dc_link_dp_set_drive_settings(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	struct link_training_settings *lt_settings)
-{
-	/* program ASIC PHY settings*/
-	dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
-
-	dp_hw_to_dpcd_lane_settings(lt_settings,
-			lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
-
-	/* Notify DP sink the PHY settings from source */
-	dpcd_set_lane_settings(link, lt_settings, DPRX);
-}
-
 static enum clock_source_id get_clock_source_id(struct dc_link *link)
 {
 	enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_UNDEFINED;
@@ -2195,7 +2181,7 @@ static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data,
 
 	if (!link->dpcd_caps.dpcd_rev.raw) {
 		do {
-			dp_receiver_power_ctrl(link, true);
+			dc_link_dp_receiver_power_ctrl(link, true);
 			core_link_read_dpcd(link, DP_DPCD_REV,
 							dpcd_data, length);
 			link->dpcd_caps.dpcd_rev.raw = dpcd_data[
@@ -4106,20 +4092,6 @@ void dc_link_clear_dprx_states(struct dc_link *link)
 	memset(&link->dprx_states, 0, sizeof(link->dprx_states));
 }
 
-void dp_receiver_power_ctrl(struct dc_link *link, bool on)
-{
-	uint8_t state;
-
-	state = on ? DP_POWER_STATE_D0 : DP_POWER_STATE_D3;
-
-	if (link->sync_lt_in_progress)
-		return;
-
-	core_link_write_dpcd(link, DP_SET_POWER, &state,
-						 sizeof(state));
-
-}
-
 void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode)
 {
 	if (link != NULL && link->dc->debug.enable_driver_sequence_debug)
@@ -4127,50 +4099,6 @@ void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode)
 					&dp_test_mode, sizeof(dp_test_mode));
 }
 
-
-static uint8_t convert_to_count(uint8_t lttpr_repeater_count)
-{
-	switch (lttpr_repeater_count) {
-	case 0x80: // 1 lttpr repeater
-		return 1;
-	case 0x40: // 2 lttpr repeaters
-		return 2;
-	case 0x20: // 3 lttpr repeaters
-		return 3;
-	case 0x10: // 4 lttpr repeaters
-		return 4;
-	case 0x08: // 5 lttpr repeaters
-		return 5;
-	case 0x04: // 6 lttpr repeaters
-		return 6;
-	case 0x02: // 7 lttpr repeaters
-		return 7;
-	case 0x01: // 8 lttpr repeaters
-		return 8;
-	default:
-		break;
-	}
-	return 0; // invalid value
-}
-
-static inline bool is_immediate_downstream(struct dc_link *link, uint32_t offset)
-{
-	return (convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) == offset);
-}
-
-void dp_enable_link_phy(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum signal_type signal,
-	enum clock_source_id clock_source,
-	const struct dc_link_settings *link_settings)
-{
-	link->cur_link_settings = *link_settings;
-	link->dc->hwss.enable_dp_link_output(link, link_res, signal,
-			clock_source, link_settings);
-	dp_receiver_power_ctrl(link, true);
-}
-
 void edp_add_delay_for_T9(struct dc_link *link)
 {
 	if (link && link->panel_config.pps.extra_delay_backlight_off > 0)
@@ -4236,57 +4164,6 @@ bool edp_receiver_ready_T7(struct dc_link *link)
 	return result;
 }
 
-void dp_disable_link_phy(struct dc_link *link, const struct link_resource *link_res,
-		enum signal_type signal)
-{
-	struct dc  *dc = link->ctx->dc;
-
-	if (!link->wa_flags.dp_keep_receiver_powered)
-		dp_receiver_power_ctrl(link, false);
-
-	dc->hwss.disable_link_output(link, link_res, signal);
-	/* Clear current link setting.*/
-	memset(&link->cur_link_settings, 0,
-			sizeof(link->cur_link_settings));
-
-	if (dc->clk_mgr->funcs->notify_link_rate_change)
-		dc->clk_mgr->funcs->notify_link_rate_change(dc->clk_mgr, link);
-}
-
-void dp_disable_link_phy_mst(struct dc_link *link, const struct link_resource *link_res,
-		enum signal_type signal)
-{
-	/* MST disable link only when no stream use the link */
-	if (link->mst_stream_alloc_table.stream_count > 0)
-		return;
-
-	dp_disable_link_phy(link, link_res, signal);
-
-	/* set the sink to SST mode after disabling the link */
-	dp_enable_mst_on_sink(link, false);
-}
-
-void dp_set_hw_lane_settings(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct link_training_settings *link_settings,
-	uint32_t offset)
-{
-	const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
-
-	if ((link_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) && !is_immediate_downstream(link, offset))
-		return;
-
-	if (link_hwss->ext.set_dp_lane_settings)
-		link_hwss->ext.set_dp_lane_settings(link, link_res,
-				&link_settings->link_settings,
-				link_settings->hw_lane_settings);
-
-	memmove(link->cur_lane_setting,
-			link_settings->hw_lane_settings,
-			sizeof(link->cur_lane_setting));
-}
-
 void dp_retrain_link_dp_test(struct dc_link *link,
 			struct dc_link_settings *link_setting,
 			bool skip_video_pattern)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index e349976f385f..b89093e14195 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -583,4 +583,6 @@ int dc_link_aux_transfer_raw(struct ddc_service *ddc,
 
 enum lttpr_mode dc_link_decide_lttpr_mode(struct dc_link *link,
 		struct dc_link_settings *link_setting);
+void dc_link_dp_receiver_power_ctrl(struct dc_link *link, bool on);
+
 #endif /* DC_LINK_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
index 758f4b3b0087..394d83a97f33 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
@@ -71,7 +71,7 @@ void dce110_optimize_bandwidth(
 		struct dc *dc,
 		struct dc_state *context);
 
-void dp_receiver_power_ctrl(struct dc_link *link, bool on);
+void dc_link_dp_receiver_power_ctrl(struct dc_link *link, bool on);
 
 void dce110_edp_power_control(
 		struct dc_link *link,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
index a4d9f1fea046..31159a86b28c 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
@@ -134,30 +134,11 @@ void disable_dp_hpo_output(struct dc_link *link,
 void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable);
 bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
 void edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd);
-void dp_receiver_power_ctrl(struct dc_link *link, bool on);
 void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
-void dp_enable_link_phy(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum signal_type signal,
-	enum clock_source_id clock_source,
-	const struct dc_link_settings *link_settings);
 void edp_add_delay_for_T9(struct dc_link *link);
 bool edp_receiver_ready_T9(struct dc_link *link);
 bool edp_receiver_ready_T7(struct dc_link *link);
 
-void dp_disable_link_phy(struct dc_link *link, const struct link_resource *link_res,
-		enum signal_type signal);
-
-void dp_disable_link_phy_mst(struct dc_link *link, const struct link_resource *link_res,
-		enum signal_type signal);
-
-void dp_set_hw_lane_settings(
-		struct dc_link *link,
-		const struct link_resource *link_res,
-		const struct link_training_settings *link_settings,
-		uint32_t offset);
-
 void dp_retrain_link_dp_test(struct dc_link *link,
 		struct dc_link_settings *link_setting,
 		bool skip_video_pattern);
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index 2e3d2073f8bd..c2d9b3d29994 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -26,7 +26,7 @@
 LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
 link_hpd.o link_ddc.o link_dpcd.o link_dp_dpia.o link_dp_training.o \
 link_dp_training_8b_10b.o link_dp_training_128b_132b.o link_dp_training_dpia.o \
-link_dp_training_auxless.o link_dp_training_fixed_vs_pe_retimer.o
+link_dp_training_auxless.o link_dp_training_fixed_vs_pe_retimer.o link_dp_phy.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
new file mode 100644
index 000000000000..422365ac67e9
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements basic dp phy functionality such as enable/disable phy
+ * output and set lane/drive settings. This file is responsible for maintaining
+ * and update software state representing current phy status such as current
+ * link settings.
+ */
+
+#include "link_dp_phy.h"
+#include "link_dpcd.h"
+#include "link_dp_training.h"
+#include "clk_mgr.h"
+#include "resource.h"
+#include "dc_link_dp.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+
+void dc_link_dp_set_drive_settings(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings)
+{
+	/* program ASIC PHY settings*/
+	dp_set_hw_lane_settings(link, link_res, lt_settings, DPRX);
+
+	dp_hw_to_dpcd_lane_settings(lt_settings,
+			lt_settings->hw_lane_settings,
+			lt_settings->dpcd_lane_settings);
+
+	/* Notify DP sink the PHY settings from source */
+	dpcd_set_lane_settings(link, lt_settings, DPRX);
+}
+
+void dc_link_dp_receiver_power_ctrl(struct dc_link *link, bool on)
+{
+	uint8_t state;
+
+	state = on ? DP_POWER_STATE_D0 : DP_POWER_STATE_D3;
+
+	if (link->sync_lt_in_progress)
+		return;
+
+	core_link_write_dpcd(link, DP_SET_POWER, &state,
+						 sizeof(state));
+
+}
+
+void dp_enable_link_phy(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	enum signal_type signal,
+	enum clock_source_id clock_source,
+	const struct dc_link_settings *link_settings)
+{
+	link->cur_link_settings = *link_settings;
+	link->dc->hwss.enable_dp_link_output(link, link_res, signal,
+			clock_source, link_settings);
+	dc_link_dp_receiver_power_ctrl(link, true);
+}
+
+void dp_disable_link_phy(struct dc_link *link,
+		const struct link_resource *link_res,
+		enum signal_type signal)
+{
+	struct dc  *dc = link->ctx->dc;
+
+	if (!link->wa_flags.dp_keep_receiver_powered)
+		dc_link_dp_receiver_power_ctrl(link, false);
+
+	dc->hwss.disable_link_output(link, link_res, signal);
+	/* Clear current link setting.*/
+	memset(&link->cur_link_settings, 0,
+			sizeof(link->cur_link_settings));
+
+	if (dc->clk_mgr->funcs->notify_link_rate_change)
+		dc->clk_mgr->funcs->notify_link_rate_change(dc->clk_mgr, link);
+}
+
+void dp_disable_link_phy_mst(struct dc_link *link,
+		const struct link_resource *link_res,
+		enum signal_type signal)
+{
+	/* MST disable link only when no stream use the link */
+	if (link->mst_stream_alloc_table.stream_count > 0)
+		return;
+
+	dp_disable_link_phy(link, link_res, signal);
+
+	/* set the sink to SST mode after disabling the link */
+	dp_enable_mst_on_sink(link, false);
+}
+
+static inline bool is_immediate_downstream(struct dc_link *link, uint32_t offset)
+{
+	return (dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) ==
+			offset);
+}
+
+void dp_set_hw_lane_settings(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct link_training_settings *link_settings,
+	uint32_t offset)
+{
+	const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
+
+	if ((link_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) &&
+			!is_immediate_downstream(link, offset))
+		return;
+
+	if (link_hwss->ext.set_dp_lane_settings)
+		link_hwss->ext.set_dp_lane_settings(link, link_res,
+				&link_settings->link_settings,
+				link_settings->hw_lane_settings);
+
+	memmove(link->cur_lane_setting,
+			link_settings->hw_lane_settings,
+			sizeof(link->cur_lane_setting));
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.h
new file mode 100644
index 000000000000..717e078fd564
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DC_LINK_DP_PHY_H__
+#define __DC_LINK_DP_PHY_H__
+
+#include "link.h"
+void dp_enable_link_phy(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	enum signal_type signal,
+	enum clock_source_id clock_source,
+	const struct dc_link_settings *link_settings);
+
+void dp_disable_link_phy(struct dc_link *link,
+		const struct link_resource *link_res,
+		enum signal_type signal);
+
+void dp_disable_link_phy_mst(struct dc_link *link,
+		const struct link_resource *link_res,
+		enum signal_type signal);
+
+void dp_set_hw_lane_settings(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		const struct link_training_settings *link_settings,
+		uint32_t offset);
+
+#endif /* __DC_LINK_DP_PHY_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
index 0011618ae978..60db0939492b 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
@@ -38,6 +38,7 @@
 #include "link_dp_training_fixed_vs_pe_retimer.h"
 #include "link_dpcd.h"
 #include "link_dp_trace.h"
+#include "link_dp_phy.h"
 #include "dc_link_dp.h"
 #include "atomfirmware.h"
 #include "link_enc_cfg.h"
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
index 3a02ba0724c1..f0811557668a 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
@@ -30,6 +30,7 @@
 #include "link_dp_training_128b_132b.h"
 #include "link_dp_training_8b_10b.h"
 #include "link_dpcd.h"
+#include "link_dp_phy.h"
 #include "dc_link_dp.h"
 
 #define DC_LOGGER \
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
index 9021f7bca166..c3eeed9303b3 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
@@ -29,6 +29,7 @@
  */
 #include "link_dp_training_8b_10b.h"
 #include "link_dpcd.h"
+#include "link_dp_phy.h"
 #include "dc_link_dp.h"
 
 #define DC_LOGGER \
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
index 319f0a59a3c8..f84b6ea53e8b 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
@@ -27,8 +27,8 @@
  *
  */
 #include "link_dp_training_auxless.h"
+#include "link_dp_phy.h"
 #include "dc_link_dp.h"
-
 #define DC_LOGGER \
 	link->ctx->logger
 bool dc_link_dp_perform_link_training_skip_aux(
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
index 821f4896d77a..468ac5a2557b 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
@@ -34,6 +34,7 @@
 #include "link_dp_training_fixed_vs_pe_retimer.h"
 #include "link_dp_training_8b_10b.h"
 #include "link_dpcd.h"
+#include "link_dp_phy.h"
 #include "dc_link_dp.h"
 
 #define DC_LOGGER \
-- 
2.39.0

[PATCH 21/37] drm/amd/display: move dp capability related logic to link_dp_capability

[Rodrigo Siqueira]

From: Wenjing Liu <wenjing.liu@amd.com>

Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
---
 .../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c  |    1 +
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |  110 +-
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 2508 ++---------------
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c |    3 +-
 .../gpu/drm/amd/display/dc/core/dc_resource.c |   11 +-
 drivers/gpu/drm/amd/display/dc/dc_link.h      |    4 +-
 .../display/dc/dce110/dce110_hw_sequencer.c   |   18 +-
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |    3 +-
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    |    9 +-
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |    8 +-
 .../drm/amd/display/dc/dcn314/dcn314_hwseq.c  |    3 +-
 .../drm/amd/display/dc/dcn32/dcn32_hwseq.c    |    9 +-
 .../drm/amd/display/dc/dml/dcn20/dcn20_fpu.c  |    5 +-
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  |    3 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_dp.h   |   41 +-
 drivers/gpu/drm/amd/display/dc/inc/link.h     |    8 +
 drivers/gpu/drm/amd/display/dc/link/Makefile  |    3 +-
 .../gpu/drm/amd/display/dc/link/link_ddc.h    |    1 +
 .../amd/display/dc/link/link_dp_capability.c  | 2169 ++++++++++++++
 .../amd/display/dc/link/link_dp_capability.h  |   66 +
 .../gpu/drm/amd/display/dc/link/link_dp_phy.c |    3 +-
 .../amd/display/dc/link/link_dp_training.c    |   41 +-
 .../dc/link/link_dp_training_128b_132b.c      |    3 +-
 .../display/dc/link/link_dp_training_8b_10b.c |   17 +-
 .../display/dc/link/link_dp_training_dpia.c   |    9 +-
 .../link_dp_training_fixed_vs_pe_retimer.c    |   11 +-
 26 files changed, 2592 insertions(+), 2475 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_capability.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_capability.h

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
index ba9814f88f48..791a788c52f2 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
@@ -34,6 +34,7 @@
 #include "core_types.h"
 #include "dm_helpers.h"
 #include "dc_link_dp.h"
+#include "link.h"
 
 #include "atomfirmware.h"
 #include "smu13_driver_if.h"
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 957e1bc8981b..5cd81348a88b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -56,6 +56,7 @@
 #include "link/link_hpd.h"
 #include "link/link_dp_training.h"
 #include "link/link_dp_phy.h"
+#include "link/link_dp_capability.h"
 
 #include "dc/dcn30/dcn30_vpg.h"
 
@@ -1032,7 +1033,7 @@ static bool should_verify_link_capability_destructively(struct dc_link *link,
 				dc_is_embedded_signal(link->local_sink->sink_signal) ||
 				link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) {
 			destrictive = false;
-		} else if (dp_get_link_encoding_format(&max_link_cap) ==
+		} else if (link_dp_get_encoding_format(&max_link_cap) ==
 				DP_8b_10b_ENCODING) {
 			if (link->dpcd_caps.is_mst_capable ||
 					is_link_enc_unavailable) {
@@ -2005,7 +2006,7 @@ static enum dc_status enable_link_dp(struct dc_state *state,
 	 * Temporary w/a to get DP2.0 link rates to work with SST.
 	 * TODO DP2.0 - Workaround: Remove w/a if and when the issue is resolved.
 	 */
-	if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING &&
+	if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING &&
 			pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
 			link->dc->debug.set_mst_en_for_sst) {
 		dp_enable_mst_on_sink(link, true);
@@ -2018,7 +2019,7 @@ static enum dc_status enable_link_dp(struct dc_state *state,
 		link->dc->hwss.edp_wait_for_hpd_ready(link, true);
 	}
 
-	if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
+	if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
 		/* TODO - DP2.0 HW: calculate 32 symbol clock for HPO encoder */
 	} else {
 		pipe_ctx->stream_res.pix_clk_params.requested_sym_clk =
@@ -2059,7 +2060,7 @@ static enum dc_status enable_link_dp(struct dc_state *state,
 	else
 		fec_enable = true;
 
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING)
+	if (link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING)
 		dp_set_fec_enable(link, fec_enable);
 
 	// during mode set we do DP_SET_POWER off then on, aux writes are lost
@@ -2640,7 +2641,7 @@ static void disable_link(struct dc_link *link, const struct link_resource *link_
 
 		if (dc_is_dp_sst_signal(signal) ||
 				link->mst_stream_alloc_table.stream_count == 0) {
-			if (dp_get_link_encoding_format(&link_settings) == DP_8b_10b_ENCODING) {
+			if (link_dp_get_encoding_format(&link_settings) == DP_8b_10b_ENCODING) {
 				dp_set_fec_enable(link, false);
 				dp_set_fec_ready(link, link_res, false);
 			}
@@ -3688,7 +3689,7 @@ static enum dc_status dc_link_update_sst_payload(struct pipe_ctx *pipe_ctx,
 	}
 
 	/* slot X.Y for SST payload allocate */
-	if (allocate && dp_get_link_encoding_format(&link->cur_link_settings) ==
+	if (allocate && link_dp_get_encoding_format(&link->cur_link_settings) ==
 			DP_128b_132b_ENCODING) {
 		avg_time_slots_per_mtp = calculate_sst_avg_time_slots_per_mtp(stream, link);
 
@@ -3771,7 +3772,7 @@ enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx)
 
 	/* program DP source TX for payload */
 	if (link_hwss->ext.update_stream_allocation_table == NULL ||
-			dp_get_link_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
+			link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
 		DC_LOG_ERROR("Failure: unknown encoding format\n");
 		return DC_ERROR_UNEXPECTED;
 	}
@@ -3887,7 +3888,7 @@ enum dc_status dc_link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t bw
 
 	/* update mst stream allocation table hardware state */
 	if (link_hwss->ext.update_stream_allocation_table == NULL ||
-			dp_get_link_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
+			link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
 		DC_LOG_ERROR("Failure: unknown encoding format\n");
 		return DC_ERROR_UNEXPECTED;
 	}
@@ -3954,7 +3955,7 @@ enum dc_status dc_link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t
 
 	/* update mst stream allocation table hardware state */
 	if (link_hwss->ext.update_stream_allocation_table == NULL ||
-			dp_get_link_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
+			link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
 		DC_LOG_ERROR("Failure: unknown encoding format\n");
 		return DC_ERROR_UNEXPECTED;
 	}
@@ -4067,7 +4068,7 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx)
 
 	/* update mst stream allocation table hardware state */
 	if (link_hwss->ext.update_stream_allocation_table == NULL ||
-			dp_get_link_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
+			link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) {
 		DC_LOG_DEBUG("Unknown encoding format\n");
 		return DC_ERROR_UNEXPECTED;
 	}
@@ -4115,7 +4116,7 @@ static void update_psp_stream_config(struct pipe_ctx *pipe_ctx, bool dpms_off)
 
 	/* stream encoder index */
 	config.stream_enc_idx = pipe_ctx->stream_res.stream_enc->id - ENGINE_ID_DIGA;
-	if (is_dp_128b_132b_signal(pipe_ctx))
+	if (link_is_dp_128b_132b_signal(pipe_ctx))
 		config.stream_enc_idx =
 				pipe_ctx->stream_res.hpo_dp_stream_enc->id - ENGINE_ID_HPO_DP_0;
 
@@ -4124,7 +4125,7 @@ static void update_psp_stream_config(struct pipe_ctx *pipe_ctx, bool dpms_off)
 
 	/* link encoder index */
 	config.link_enc_idx = link_enc->transmitter - TRANSMITTER_UNIPHY_A;
-	if (is_dp_128b_132b_signal(pipe_ctx))
+	if (link_is_dp_128b_132b_signal(pipe_ctx))
 		config.link_enc_idx = pipe_ctx->link_res.hpo_dp_link_enc->inst;
 
 	/* dio output index is dpia index for DPIA endpoint & dcio index by default */
@@ -4145,7 +4146,7 @@ static void update_psp_stream_config(struct pipe_ctx *pipe_ctx, bool dpms_off)
 	config.assr_enabled = (panel_mode == DP_PANEL_MODE_EDP) ? 1 : 0;
 	config.mst_enabled = (pipe_ctx->stream->signal ==
 			SIGNAL_TYPE_DISPLAY_PORT_MST) ? 1 : 0;
-	config.dp2_enabled = is_dp_128b_132b_signal(pipe_ctx) ? 1 : 0;
+	config.dp2_enabled = link_is_dp_128b_132b_signal(pipe_ctx) ? 1 : 0;
 	config.usb4_enabled = (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) ?
 			1 : 0;
 	config.dpms_off = dpms_off;
@@ -4248,7 +4249,7 @@ void core_link_enable_stream(
 	struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
 	const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
 
-	if (is_dp_128b_132b_signal(pipe_ctx))
+	if (link_is_dp_128b_132b_signal(pipe_ctx))
 		vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg;
 
 	DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
@@ -4270,7 +4271,7 @@ void core_link_enable_stream(
 	ASSERT(link_enc);
 
 	if (!dc_is_virtual_signal(pipe_ctx->stream->signal)
-			&& !is_dp_128b_132b_signal(pipe_ctx)) {
+			&& !link_is_dp_128b_132b_signal(pipe_ctx)) {
 		if (link_enc)
 			link_enc->funcs->setup(
 				link_enc,
@@ -4280,7 +4281,7 @@ void core_link_enable_stream(
 	pipe_ctx->stream->link->link_state_valid = true;
 
 	if (pipe_ctx->stream_res.tg->funcs->set_out_mux) {
-		if (is_dp_128b_132b_signal(pipe_ctx))
+		if (link_is_dp_128b_132b_signal(pipe_ctx))
 			otg_out_dest = OUT_MUX_HPO_DP;
 		else
 			otg_out_dest = OUT_MUX_DIO;
@@ -4382,7 +4383,7 @@ void core_link_enable_stream(
 		 * from transmitter control.
 		 */
 		if (!(dc_is_virtual_signal(pipe_ctx->stream->signal) ||
-				is_dp_128b_132b_signal(pipe_ctx)))
+				link_is_dp_128b_132b_signal(pipe_ctx)))
 			if (link_enc)
 				link_enc->funcs->setup(
 					link_enc,
@@ -4402,7 +4403,7 @@ void core_link_enable_stream(
 		if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
 			dc_link_allocate_mst_payload(pipe_ctx);
 		else if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
-				is_dp_128b_132b_signal(pipe_ctx))
+				link_is_dp_128b_132b_signal(pipe_ctx))
 			dc_link_update_sst_payload(pipe_ctx, true);
 
 		dc->hwss.unblank_stream(pipe_ctx,
@@ -4420,7 +4421,7 @@ void core_link_enable_stream(
 		dc->hwss.enable_audio_stream(pipe_ctx);
 
 	} else { // if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment))
-		if (is_dp_128b_132b_signal(pipe_ctx))
+		if (link_is_dp_128b_132b_signal(pipe_ctx))
 			fpga_dp_hpo_enable_link_and_stream(state, pipe_ctx);
 		if (dc_is_dp_signal(pipe_ctx->stream->signal) ||
 				dc_is_virtual_signal(pipe_ctx->stream->signal))
@@ -4439,7 +4440,7 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 	struct dc_link *link = stream->sink->link;
 	struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
 
-	if (is_dp_128b_132b_signal(pipe_ctx))
+	if (link_is_dp_128b_132b_signal(pipe_ctx))
 		vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg;
 
 	DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
@@ -4472,7 +4473,7 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 	if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
 		deallocate_mst_payload(pipe_ctx);
 	else if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
-			is_dp_128b_132b_signal(pipe_ctx))
+			link_is_dp_128b_132b_signal(pipe_ctx))
 		dc_link_update_sst_payload(pipe_ctx, false);
 
 	if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) {
@@ -4501,7 +4502,7 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 	}
 
 	if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
-			!is_dp_128b_132b_signal(pipe_ctx)) {
+			!link_is_dp_128b_132b_signal(pipe_ctx)) {
 
 		/* In DP1.x SST mode, our encoder will go to TPS1
 		 * when link is on but stream is off.
@@ -4521,7 +4522,7 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 		if (dc_is_dp_signal(pipe_ctx->stream->signal))
 			dp_set_dsc_enable(pipe_ctx, false);
 	}
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		if (pipe_ctx->stream_res.tg->funcs->set_out_mux)
 			pipe_ctx->stream_res.tg->funcs->set_out_mux(pipe_ctx->stream_res.tg, OUT_MUX_DIO);
 	}
@@ -4596,7 +4597,7 @@ void dc_link_set_preferred_link_settings(struct dc *dc,
 	if (link_stream->dpms_off)
 		return;
 
-	if (decide_link_settings(link_stream, &store_settings))
+	if (link_decide_link_settings(link_stream, &store_settings))
 		dp_retrain_link_dp_test(link, &store_settings, false);
 }
 
@@ -4651,7 +4652,7 @@ uint32_t dc_link_bandwidth_kbps(
 	uint32_t total_data_bw_efficiency_x10000 = 0;
 	uint32_t link_rate_per_lane_kbps = 0;
 
-	switch (dp_get_link_encoding_format(link_setting)) {
+	switch (link_dp_get_encoding_format(link_setting)) {
 	case DP_8b_10b_ENCODING:
 		/* For 8b/10b encoding:
 		 * link rate is defined in the unit of LINK_RATE_REF_FREQ_IN_KHZ per DP byte per lane.
@@ -4680,57 +4681,6 @@ uint32_t dc_link_bandwidth_kbps(
 	return link_rate_per_lane_kbps * link_setting->lane_count / 10000 * total_data_bw_efficiency_x10000;
 }
 
-const struct dc_link_settings *dc_link_get_link_cap(
-		const struct dc_link *link)
-{
-	if (link->preferred_link_setting.lane_count != LANE_COUNT_UNKNOWN &&
-			link->preferred_link_setting.link_rate != LINK_RATE_UNKNOWN)
-		return &link->preferred_link_setting;
-	return &link->verified_link_cap;
-}
-
-void dc_link_overwrite_extended_receiver_cap(
-		struct dc_link *link)
-{
-	dp_overwrite_extended_receiver_cap(link);
-}
-
-bool dc_link_is_fec_supported(const struct dc_link *link)
-{
-	/* TODO - use asic cap instead of link_enc->features
-	 * we no longer know which link enc to use for this link before commit
-	 */
-	struct link_encoder *link_enc = NULL;
-
-	link_enc = link_enc_cfg_get_link_enc(link);
-	ASSERT(link_enc);
-
-	return (dc_is_dp_signal(link->connector_signal) && link_enc &&
-			link_enc->features.fec_supported &&
-			link->dpcd_caps.fec_cap.bits.FEC_CAPABLE &&
-			!IS_FPGA_MAXIMUS_DC(link->ctx->dce_environment));
-}
-
-bool dc_link_should_enable_fec(const struct dc_link *link)
-{
-	bool force_disable = false;
-
-	if (link->fec_state == dc_link_fec_enabled)
-		force_disable = false;
-	else if (link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT_MST &&
-			link->local_sink &&
-			link->local_sink->edid_caps.panel_patch.disable_fec)
-		force_disable = true;
-	else if (link->connector_signal == SIGNAL_TYPE_EDP
-			&& (link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.
-			 dsc_support.DSC_SUPPORT == false
-				|| link->panel_config.dsc.disable_dsc_edp
-				|| !link->dc->caps.edp_dsc_support))
-		force_disable = true;
-
-	return !force_disable && dc_link_is_fec_supported(link);
-}
-
 uint32_t dc_bandwidth_in_kbps_from_timing(
 		const struct dc_crtc_timing *timing)
 {
@@ -4835,8 +4785,8 @@ void dc_get_cur_link_res_map(const struct dc *dc, uint32_t *map)
 		for (i = 0; i < dc->caps.max_links; i++) {
 			link = dc->links[i];
 			if (link->link_status.link_active &&
-					dp_get_link_encoding_format(&link->reported_link_cap) == DP_128b_132b_ENCODING &&
-					dp_get_link_encoding_format(&link->cur_link_settings) != DP_128b_132b_ENCODING)
+					link_dp_get_encoding_format(&link->reported_link_cap) == DP_128b_132b_ENCODING &&
+					link_dp_get_encoding_format(&link->cur_link_settings) != DP_128b_132b_ENCODING)
 				/* hpo dp link encoder is considered as recycled, when RX reports 128b/132b encoding capability
 				 * but current link doesn't use it.
 				 */
@@ -4879,7 +4829,7 @@ void dc_restore_link_res_map(const struct dc *dc, uint32_t *map)
 			if ((hpo_dp_recycle_map & (1 << i)) == 0) {
 				link = dc->links[i];
 				if (link->type != dc_connection_none &&
-						dp_get_link_encoding_format(&link->verified_link_cap) == DP_128b_132b_ENCODING) {
+						link_dp_get_encoding_format(&link->verified_link_cap) == DP_128b_132b_ENCODING) {
 					if (available_hpo_dp_count > 0)
 						available_hpo_dp_count--;
 					else
@@ -4893,7 +4843,7 @@ void dc_restore_link_res_map(const struct dc *dc, uint32_t *map)
 			if ((hpo_dp_recycle_map & (1 << i)) != 0) {
 				link = dc->links[i];
 				if (link->type != dc_connection_none &&
-						dp_get_link_encoding_format(&link->verified_link_cap) == DP_128b_132b_ENCODING) {
+						link_dp_get_encoding_format(&link->verified_link_cap) == DP_128b_132b_ENCODING) {
 					if (available_hpo_dp_count > 0)
 						available_hpo_dp_count--;
 					else
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index cef89519c12e..1e60827911c6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -46,6 +46,7 @@
 #include "link/link_dp_training_dpia.h"
 #include "link/link_dp_training_auxless.h"
 #include "link/link_dp_phy.h"
+#include "link/link_dp_capability.h"
 #include "resource.h"
 #define DC_LOGGER \
 	link->ctx->logger
@@ -53,54 +54,6 @@
 #define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
 #include "link/link_dpcd.h"
 
-#ifndef MAX
-#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
-#endif
-#ifndef MIN
-#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
-#endif
-
-struct dp_lt_fallback_entry {
-	enum dc_lane_count lane_count;
-	enum dc_link_rate link_rate;
-};
-
-static const struct dp_lt_fallback_entry dp_lt_fallbacks[] = {
-		/* This link training fallback array is ordered by
-		 * link bandwidth from highest to lowest.
-		 * DP specs makes it a normative policy to always
-		 * choose the next highest link bandwidth during
-		 * link training fallback.
-		 */
-		{LANE_COUNT_FOUR, LINK_RATE_UHBR20},
-		{LANE_COUNT_FOUR, LINK_RATE_UHBR13_5},
-		{LANE_COUNT_TWO, LINK_RATE_UHBR20},
-		{LANE_COUNT_FOUR, LINK_RATE_UHBR10},
-		{LANE_COUNT_TWO, LINK_RATE_UHBR13_5},
-		{LANE_COUNT_FOUR, LINK_RATE_HIGH3},
-		{LANE_COUNT_ONE, LINK_RATE_UHBR20},
-		{LANE_COUNT_TWO, LINK_RATE_UHBR10},
-		{LANE_COUNT_FOUR, LINK_RATE_HIGH2},
-		{LANE_COUNT_ONE, LINK_RATE_UHBR13_5},
-		{LANE_COUNT_TWO, LINK_RATE_HIGH3},
-		{LANE_COUNT_ONE, LINK_RATE_UHBR10},
-		{LANE_COUNT_TWO, LINK_RATE_HIGH2},
-		{LANE_COUNT_FOUR, LINK_RATE_HIGH},
-		{LANE_COUNT_ONE, LINK_RATE_HIGH3},
-		{LANE_COUNT_FOUR, LINK_RATE_LOW},
-		{LANE_COUNT_ONE, LINK_RATE_HIGH2},
-		{LANE_COUNT_TWO, LINK_RATE_HIGH},
-		{LANE_COUNT_TWO, LINK_RATE_LOW},
-		{LANE_COUNT_ONE, LINK_RATE_HIGH},
-		{LANE_COUNT_ONE, LINK_RATE_LOW},
-};
-
-static const struct dc_link_settings fail_safe_link_settings = {
-		.lane_count = LANE_COUNT_ONE,
-		.link_rate = LINK_RATE_LOW,
-		.link_spread = LINK_SPREAD_DISABLED,
-};
-
 static uint8_t get_nibble_at_index(const uint8_t *buf,
 	uint32_t index)
 {
@@ -115,174 +68,7 @@ static uint8_t get_nibble_at_index(const uint8_t *buf,
 	return nibble;
 }
 
-uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count)
-{
-	switch (lttpr_repeater_count) {
-	case 0x80: // 1 lttpr repeater
-		return 1;
-	case 0x40: // 2 lttpr repeaters
-		return 2;
-	case 0x20: // 3 lttpr repeaters
-		return 3;
-	case 0x10: // 4 lttpr repeaters
-		return 4;
-	case 0x08: // 5 lttpr repeaters
-		return 5;
-	case 0x04: // 6 lttpr repeaters
-		return 6;
-	case 0x02: // 7 lttpr repeaters
-		return 7;
-	case 0x01: // 8 lttpr repeaters
-		return 8;
-	default:
-		break;
-	}
-	return 0; // invalid value
-}
-
-static enum clock_source_id get_clock_source_id(struct dc_link *link)
-{
-	enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_UNDEFINED;
-	struct clock_source *dp_cs = link->dc->res_pool->dp_clock_source;
-
-	if (dp_cs != NULL) {
-		dp_cs_id = dp_cs->id;
-	} else {
-		/*
-		 * dp clock source is not initialized for some reason.
-		 * Should not happen, CLOCK_SOURCE_ID_EXTERNAL will be used
-		 */
-		ASSERT(dp_cs);
-	}
-
-	return dp_cs_id;
-}
-
-static enum dc_link_rate get_lttpr_max_link_rate(struct dc_link *link)
-{
-	enum dc_link_rate lttpr_max_link_rate = link->dpcd_caps.lttpr_caps.max_link_rate;
-
-	if (link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.bits.UHBR20)
-		lttpr_max_link_rate = LINK_RATE_UHBR20;
-	else if (link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.bits.UHBR13_5)
-		lttpr_max_link_rate = LINK_RATE_UHBR13_5;
-	else if (link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.bits.UHBR10)
-		lttpr_max_link_rate = LINK_RATE_UHBR10;
-
-	return lttpr_max_link_rate;
-}
-
-static enum dc_link_rate get_cable_max_link_rate(struct dc_link *link)
-{
-	enum dc_link_rate cable_max_link_rate = LINK_RATE_UNKNOWN;
-
-	if (link->dpcd_caps.cable_id.bits.UHBR10_20_CAPABILITY & DP_UHBR20)
-		cable_max_link_rate = LINK_RATE_UHBR20;
-	else if (link->dpcd_caps.cable_id.bits.UHBR13_5_CAPABILITY)
-		cable_max_link_rate = LINK_RATE_UHBR13_5;
-	else if (link->dpcd_caps.cable_id.bits.UHBR10_20_CAPABILITY & DP_UHBR10)
-		cable_max_link_rate = LINK_RATE_UHBR10;
-
-	return cable_max_link_rate;
-}
-
-bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap)
-{
-	struct link_encoder *link_enc = NULL;
-
-	if (!max_link_enc_cap) {
-		DC_LOG_ERROR("%s: Could not return max link encoder caps", __func__);
-		return false;
-	}
-
-	link_enc = link_enc_cfg_get_link_enc(link);
-	ASSERT(link_enc);
-
-	if (link_enc && link_enc->funcs->get_max_link_cap) {
-		link_enc->funcs->get_max_link_cap(link_enc, max_link_enc_cap);
-		return true;
-	}
-
-	DC_LOG_ERROR("%s: Max link encoder caps unknown", __func__);
-	max_link_enc_cap->lane_count = 1;
-	max_link_enc_cap->link_rate = 6;
-	return false;
-}
-
-struct dc_link_settings dp_get_max_link_cap(struct dc_link *link)
-{
-	struct dc_link_settings max_link_cap = {0};
-	enum dc_link_rate lttpr_max_link_rate;
-	enum dc_link_rate cable_max_link_rate;
-	struct link_encoder *link_enc = NULL;
-
-
-	link_enc = link_enc_cfg_get_link_enc(link);
-	ASSERT(link_enc);
-
-	/* get max link encoder capability */
-	if (link_enc)
-		link_enc->funcs->get_max_link_cap(link_enc, &max_link_cap);
-
-	/* Lower link settings based on sink's link cap */
-	if (link->reported_link_cap.lane_count < max_link_cap.lane_count)
-		max_link_cap.lane_count =
-				link->reported_link_cap.lane_count;
-	if (link->reported_link_cap.link_rate < max_link_cap.link_rate)
-		max_link_cap.link_rate =
-				link->reported_link_cap.link_rate;
-	if (link->reported_link_cap.link_spread <
-			max_link_cap.link_spread)
-		max_link_cap.link_spread =
-				link->reported_link_cap.link_spread;
-
-	/* Lower link settings based on cable attributes
-	 * Cable ID is a DP2 feature to identify max certified link rate that
-	 * a cable can carry. The cable identification method requires both
-	 * cable and display hardware support. Since the specs comes late, it is
-	 * anticipated that the first round of DP2 cables and displays may not
-	 * be fully compatible to reliably return cable ID data. Therefore the
-	 * decision of our cable id policy is that if the cable can return non
-	 * zero cable id data, we will take cable's link rate capability into
-	 * account. However if we get zero data, the cable link rate capability
-	 * is considered inconclusive. In this case, we will not take cable's
-	 * capability into account to avoid of over limiting hardware capability
-	 * from users. The max overall link rate capability is still determined
-	 * after actual dp pre-training. Cable id is considered as an auxiliary
-	 * method of determining max link bandwidth capability.
-	 */
-	cable_max_link_rate = get_cable_max_link_rate(link);
-
-	if (!link->dc->debug.ignore_cable_id &&
-			cable_max_link_rate != LINK_RATE_UNKNOWN &&
-			cable_max_link_rate < max_link_cap.link_rate)
-		max_link_cap.link_rate = cable_max_link_rate;
-
-	/* account for lttpr repeaters cap
-	 * notes: repeaters do not snoop in the DPRX Capabilities addresses (3.6.3).
-	 */
-	if (dp_is_lttpr_present(link)) {
-		if (link->dpcd_caps.lttpr_caps.max_lane_count < max_link_cap.lane_count)
-			max_link_cap.lane_count = link->dpcd_caps.lttpr_caps.max_lane_count;
-		lttpr_max_link_rate = get_lttpr_max_link_rate(link);
-
-		if (lttpr_max_link_rate < max_link_cap.link_rate)
-			max_link_cap.link_rate = lttpr_max_link_rate;
-
-		DC_LOG_HW_LINK_TRAINING("%s\n Training with LTTPR,  max_lane count %d max_link rate %d \n",
-						__func__,
-						max_link_cap.lane_count,
-						max_link_cap.link_rate);
-	}
-
-	if (dp_get_link_encoding_format(&max_link_cap) == DP_128b_132b_ENCODING &&
-			link->dc->debug.disable_uhbr)
-		max_link_cap.link_rate = LINK_RATE_HIGH3;
-
-	return max_link_cap;
-}
-
-static enum dc_status read_hpd_rx_irq_data(
+enum dc_status read_hpd_rx_irq_data(
 	struct dc_link *link,
 	union hpd_irq_data *irq_data)
 {
@@ -397,372 +183,6 @@ bool hpd_rx_irq_check_link_loss_status(
 	return return_code;
 }
 
-static bool dp_verify_link_cap(
-	struct dc_link *link,
-	struct dc_link_settings *known_limit_link_setting,
-	int *fail_count)
-{
-	struct dc_link_settings cur_link_settings = {0};
-	struct dc_link_settings max_link_settings = *known_limit_link_setting;
-	bool success = false;
-	bool skip_video_pattern;
-	enum clock_source_id dp_cs_id = get_clock_source_id(link);
-	enum link_training_result status = LINK_TRAINING_SUCCESS;
-	union hpd_irq_data irq_data;
-	struct link_resource link_res;
-
-	memset(&irq_data, 0, sizeof(irq_data));
-	cur_link_settings = max_link_settings;
-
-	/* Grant extended timeout request */
-	if (dp_is_lttpr_present(link) && link->dpcd_caps.lttpr_caps.max_ext_timeout > 0) {
-		uint8_t grant = link->dpcd_caps.lttpr_caps.max_ext_timeout & 0x80;
-
-		core_link_write_dpcd(link, DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT, &grant, sizeof(grant));
-	}
-
-	do {
-		if (!get_temp_dp_link_res(link, &link_res, &cur_link_settings))
-			continue;
-
-		skip_video_pattern = cur_link_settings.link_rate != LINK_RATE_LOW;
-		dp_enable_link_phy(
-				link,
-				&link_res,
-				link->connector_signal,
-				dp_cs_id,
-				&cur_link_settings);
-
-		status = dp_perform_link_training(
-				link,
-				&link_res,
-				&cur_link_settings,
-				skip_video_pattern);
-
-		if (status == LINK_TRAINING_SUCCESS) {
-			success = true;
-			udelay(1000);
-			if (read_hpd_rx_irq_data(link, &irq_data) == DC_OK &&
-					hpd_rx_irq_check_link_loss_status(
-							link,
-							&irq_data))
-				(*fail_count)++;
-
-		} else {
-			(*fail_count)++;
-		}
-		dp_trace_lt_total_count_increment(link, true);
-		dp_trace_lt_result_update(link, status, true);
-		dp_disable_link_phy(link, &link_res, link->connector_signal);
-	} while (!success && decide_fallback_link_setting(link,
-			&max_link_settings, &cur_link_settings, status));
-
-	link->verified_link_cap = success ?
-			cur_link_settings : fail_safe_link_settings;
-	return success;
-}
-
-static void apply_usbc_combo_phy_reset_wa(struct dc_link *link,
-		struct dc_link_settings *link_settings)
-{
-	/* Temporary Renoir-specific workaround PHY will sometimes be in bad
-	 * state on hotplugging display from certain USB-C dongle, so add extra
-	 * cycle of enabling and disabling the PHY before first link training.
-	 */
-	struct link_resource link_res = {0};
-	enum clock_source_id dp_cs_id = get_clock_source_id(link);
-
-	dp_enable_link_phy(link, &link_res, link->connector_signal,
-			dp_cs_id, link_settings);
-	dp_disable_link_phy(link, &link_res, link->connector_signal);
-}
-
-bool dp_verify_link_cap_with_retries(
-	struct dc_link *link,
-	struct dc_link_settings *known_limit_link_setting,
-	int attempts)
-{
-	int i = 0;
-	bool success = false;
-	int fail_count = 0;
-
-	dp_trace_detect_lt_init(link);
-
-	if (link->link_enc && link->link_enc->features.flags.bits.DP_IS_USB_C &&
-			link->dc->debug.usbc_combo_phy_reset_wa)
-		apply_usbc_combo_phy_reset_wa(link, known_limit_link_setting);
-
-	dp_trace_set_lt_start_timestamp(link, false);
-	for (i = 0; i < attempts; i++) {
-		enum dc_connection_type type = dc_connection_none;
-
-		memset(&link->verified_link_cap, 0,
-				sizeof(struct dc_link_settings));
-		if (!dc_link_detect_sink(link, &type) || type == dc_connection_none) {
-			link->verified_link_cap = fail_safe_link_settings;
-			break;
-		} else if (dp_verify_link_cap(link, known_limit_link_setting,
-				&fail_count) && fail_count == 0) {
-			success = true;
-			break;
-		}
-		msleep(10);
-	}
-
-	dp_trace_lt_fail_count_update(link, fail_count, true);
-	dp_trace_set_lt_end_timestamp(link, true);
-
-	return success;
-}
-
-/* in DP compliance test, DPR-120 may have
- * a random value in its MAX_LINK_BW dpcd field.
- * We map it to the maximum supported link rate that
- * is smaller than MAX_LINK_BW in this case.
- */
-static enum dc_link_rate get_link_rate_from_max_link_bw(
-		 uint8_t max_link_bw)
-{
-	enum dc_link_rate link_rate;
-
-	if (max_link_bw >= LINK_RATE_HIGH3) {
-		link_rate = LINK_RATE_HIGH3;
-	} else if (max_link_bw < LINK_RATE_HIGH3
-			&& max_link_bw >= LINK_RATE_HIGH2) {
-		link_rate = LINK_RATE_HIGH2;
-	} else if (max_link_bw < LINK_RATE_HIGH2
-			&& max_link_bw >= LINK_RATE_HIGH) {
-		link_rate = LINK_RATE_HIGH;
-	} else if (max_link_bw < LINK_RATE_HIGH
-			&& max_link_bw >= LINK_RATE_LOW) {
-		link_rate = LINK_RATE_LOW;
-	} else {
-		link_rate = LINK_RATE_UNKNOWN;
-	}
-
-	return link_rate;
-}
-
-static inline bool reached_minimum_lane_count(enum dc_lane_count lane_count)
-{
-	return lane_count <= LANE_COUNT_ONE;
-}
-
-static inline bool reached_minimum_link_rate(enum dc_link_rate link_rate)
-{
-	return link_rate <= LINK_RATE_LOW;
-}
-
-static enum dc_lane_count reduce_lane_count(enum dc_lane_count lane_count)
-{
-	switch (lane_count) {
-	case LANE_COUNT_FOUR:
-		return LANE_COUNT_TWO;
-	case LANE_COUNT_TWO:
-		return LANE_COUNT_ONE;
-	case LANE_COUNT_ONE:
-		return LANE_COUNT_UNKNOWN;
-	default:
-		return LANE_COUNT_UNKNOWN;
-	}
-}
-
-static enum dc_link_rate reduce_link_rate(enum dc_link_rate link_rate)
-{
-	switch (link_rate) {
-	case LINK_RATE_UHBR20:
-		return LINK_RATE_UHBR13_5;
-	case LINK_RATE_UHBR13_5:
-		return LINK_RATE_UHBR10;
-	case LINK_RATE_UHBR10:
-		return LINK_RATE_HIGH3;
-	case LINK_RATE_HIGH3:
-		return LINK_RATE_HIGH2;
-	case LINK_RATE_HIGH2:
-		return LINK_RATE_HIGH;
-	case LINK_RATE_HIGH:
-		return LINK_RATE_LOW;
-	case LINK_RATE_LOW:
-		return LINK_RATE_UNKNOWN;
-	default:
-		return LINK_RATE_UNKNOWN;
-	}
-}
-
-static enum dc_lane_count increase_lane_count(enum dc_lane_count lane_count)
-{
-	switch (lane_count) {
-	case LANE_COUNT_ONE:
-		return LANE_COUNT_TWO;
-	case LANE_COUNT_TWO:
-		return LANE_COUNT_FOUR;
-	default:
-		return LANE_COUNT_UNKNOWN;
-	}
-}
-
-static enum dc_link_rate increase_link_rate(struct dc_link *link,
-		enum dc_link_rate link_rate)
-{
-	switch (link_rate) {
-	case LINK_RATE_LOW:
-		return LINK_RATE_HIGH;
-	case LINK_RATE_HIGH:
-		return LINK_RATE_HIGH2;
-	case LINK_RATE_HIGH2:
-		return LINK_RATE_HIGH3;
-	case LINK_RATE_HIGH3:
-		return LINK_RATE_UHBR10;
-	case LINK_RATE_UHBR10:
-		/* upto DP2.x specs UHBR13.5 is the only link rate that could be
-		 * not supported by DPRX when higher link rate is supported.
-		 * so we treat it as a special case for code simplicity. When we
-		 * have new specs with more link rates like this, we should
-		 * consider a more generic solution to handle discrete link
-		 * rate capabilities.
-		 */
-		return link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR13_5 ?
-				LINK_RATE_UHBR13_5 : LINK_RATE_UHBR20;
-	case LINK_RATE_UHBR13_5:
-		return LINK_RATE_UHBR20;
-	default:
-		return LINK_RATE_UNKNOWN;
-	}
-}
-
-static bool decide_fallback_link_setting_max_bw_policy(
-		struct dc_link *link,
-		const struct dc_link_settings *max,
-		struct dc_link_settings *cur,
-		enum link_training_result training_result)
-{
-	uint8_t cur_idx = 0, next_idx;
-	bool found = false;
-
-	if (training_result == LINK_TRAINING_ABORT)
-		return false;
-
-	while (cur_idx < ARRAY_SIZE(dp_lt_fallbacks))
-		/* find current index */
-		if (dp_lt_fallbacks[cur_idx].lane_count == cur->lane_count &&
-				dp_lt_fallbacks[cur_idx].link_rate == cur->link_rate)
-			break;
-		else
-			cur_idx++;
-
-	next_idx = cur_idx + 1;
-
-	while (next_idx < ARRAY_SIZE(dp_lt_fallbacks))
-		/* find next index */
-		if (dp_lt_fallbacks[next_idx].lane_count > max->lane_count ||
-				dp_lt_fallbacks[next_idx].link_rate > max->link_rate)
-			next_idx++;
-		else if (dp_lt_fallbacks[next_idx].link_rate == LINK_RATE_UHBR13_5 &&
-				link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR13_5 == 0)
-			/* upto DP2.x specs UHBR13.5 is the only link rate that
-			 * could be not supported by DPRX when higher link rate
-			 * is supported. so we treat it as a special case for
-			 * code simplicity. When we have new specs with more
-			 * link rates like this, we should consider a more
-			 * generic solution to handle discrete link rate
-			 * capabilities.
-			 */
-			next_idx++;
-		else
-			break;
-
-	if (next_idx < ARRAY_SIZE(dp_lt_fallbacks)) {
-		cur->lane_count = dp_lt_fallbacks[next_idx].lane_count;
-		cur->link_rate = dp_lt_fallbacks[next_idx].link_rate;
-		found = true;
-	}
-
-	return found;
-}
-
-/*
- * function: set link rate and lane count fallback based
- * on current link setting and last link training result
- * return value:
- *			true - link setting could be set
- *			false - has reached minimum setting
- *					and no further fallback could be done
- */
-bool decide_fallback_link_setting(
-		struct dc_link *link,
-		struct dc_link_settings *max,
-		struct dc_link_settings *cur,
-		enum link_training_result training_result)
-{
-	if (dp_get_link_encoding_format(max) == DP_128b_132b_ENCODING ||
-			link->dc->debug.force_dp2_lt_fallback_method)
-		return decide_fallback_link_setting_max_bw_policy(link, max,
-				cur, training_result);
-
-	switch (training_result) {
-	case LINK_TRAINING_CR_FAIL_LANE0:
-	case LINK_TRAINING_CR_FAIL_LANE1:
-	case LINK_TRAINING_CR_FAIL_LANE23:
-	case LINK_TRAINING_LQA_FAIL:
-	{
-		if (!reached_minimum_link_rate(cur->link_rate)) {
-			cur->link_rate = reduce_link_rate(cur->link_rate);
-		} else if (!reached_minimum_lane_count(cur->lane_count)) {
-			cur->link_rate = max->link_rate;
-			if (training_result == LINK_TRAINING_CR_FAIL_LANE0)
-				return false;
-			else if (training_result == LINK_TRAINING_CR_FAIL_LANE1)
-				cur->lane_count = LANE_COUNT_ONE;
-			else if (training_result == LINK_TRAINING_CR_FAIL_LANE23)
-				cur->lane_count = LANE_COUNT_TWO;
-			else
-				cur->lane_count = reduce_lane_count(cur->lane_count);
-		} else {
-			return false;
-		}
-		break;
-	}
-	case LINK_TRAINING_EQ_FAIL_EQ:
-	case LINK_TRAINING_EQ_FAIL_CR_PARTIAL:
-	{
-		if (!reached_minimum_lane_count(cur->lane_count)) {
-			cur->lane_count = reduce_lane_count(cur->lane_count);
-		} else if (!reached_minimum_link_rate(cur->link_rate)) {
-			cur->link_rate = reduce_link_rate(cur->link_rate);
-			/* Reduce max link rate to avoid potential infinite loop.
-			 * Needed so that any subsequent CR_FAIL fallback can't
-			 * re-set the link rate higher than the link rate from
-			 * the latest EQ_FAIL fallback.
-			 */
-			max->link_rate = cur->link_rate;
-			cur->lane_count = max->lane_count;
-		} else {
-			return false;
-		}
-		break;
-	}
-	case LINK_TRAINING_EQ_FAIL_CR:
-	{
-		if (!reached_minimum_link_rate(cur->link_rate)) {
-			cur->link_rate = reduce_link_rate(cur->link_rate);
-			/* Reduce max link rate to avoid potential infinite loop.
-			 * Needed so that any subsequent CR_FAIL fallback can't
-			 * re-set the link rate higher than the link rate from
-			 * the latest EQ_FAIL fallback.
-			 */
-			max->link_rate = cur->link_rate;
-			cur->lane_count = max->lane_count;
-		} else {
-			return false;
-		}
-		break;
-	}
-	default:
-		return false;
-	}
-	return true;
-}
-
 bool dp_validate_mode_timing(
 	struct dc_link *link,
 	const struct dc_crtc_timing *timing)
@@ -814,357 +234,57 @@ bool dp_validate_mode_timing(
 		return false;
 }
 
-static bool decide_dp_link_settings(struct dc_link *link, struct dc_link_settings *link_setting, uint32_t req_bw)
+/*************************Short Pulse IRQ***************************/
+bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link)
 {
-	struct dc_link_settings initial_link_setting = {
-		LANE_COUNT_ONE, LINK_RATE_LOW, LINK_SPREAD_DISABLED, false, 0};
-	struct dc_link_settings current_link_setting =
-			initial_link_setting;
-	uint32_t link_bw;
-
-	if (req_bw > dc_link_bandwidth_kbps(link, &link->verified_link_cap))
-		return false;
-
-	/* search for the minimum link setting that:
-	 * 1. is supported according to the link training result
-	 * 2. could support the b/w requested by the timing
+	/*
+	 * Don't handle RX IRQ unless one of following is met:
+	 * 1) The link is established (cur_link_settings != unknown)
+	 * 2) We know we're dealing with a branch device, SST or MST
 	 */
-	while (current_link_setting.link_rate <=
-			link->verified_link_cap.link_rate) {
-		link_bw = dc_link_bandwidth_kbps(
-				link,
-				&current_link_setting);
-		if (req_bw <= link_bw) {
-			*link_setting = current_link_setting;
-			return true;
-		}
 
-		if (current_link_setting.lane_count <
-				link->verified_link_cap.lane_count) {
-			current_link_setting.lane_count =
-					increase_lane_count(
-							current_link_setting.lane_count);
-		} else {
-			current_link_setting.link_rate =
-					increase_link_rate(link,
-							current_link_setting.link_rate);
-			current_link_setting.lane_count =
-					initial_link_setting.lane_count;
-		}
-	}
+	if ((link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||
+		is_dp_branch_device(link))
+		return true;
 
 	return false;
 }
 
-bool decide_edp_link_settings(struct dc_link *link, struct dc_link_settings *link_setting, uint32_t req_bw)
+static bool handle_hpd_irq_psr_sink(struct dc_link *link)
 {
-	struct dc_link_settings initial_link_setting;
-	struct dc_link_settings current_link_setting;
-	uint32_t link_bw;
+	union dpcd_psr_configuration psr_configuration;
 
-	/*
-	 * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
-	 * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
-	 */
-	if (link->dpcd_caps.dpcd_rev.raw < DPCD_REV_13 ||
-			link->dpcd_caps.edp_supported_link_rates_count == 0) {
-		*link_setting = link->verified_link_cap;
-		return true;
-	}
+	if (!link->psr_settings.psr_feature_enabled)
+		return false;
 
-	memset(&initial_link_setting, 0, sizeof(initial_link_setting));
-	initial_link_setting.lane_count = LANE_COUNT_ONE;
-	initial_link_setting.link_rate = link->dpcd_caps.edp_supported_link_rates[0];
-	initial_link_setting.link_spread = LINK_SPREAD_DISABLED;
-	initial_link_setting.use_link_rate_set = true;
-	initial_link_setting.link_rate_set = 0;
-	current_link_setting = initial_link_setting;
-
-	/* search for the minimum link setting that:
-	 * 1. is supported according to the link training result
-	 * 2. could support the b/w requested by the timing
-	 */
-	while (current_link_setting.link_rate <=
-			link->verified_link_cap.link_rate) {
-		link_bw = dc_link_bandwidth_kbps(
-				link,
-				&current_link_setting);
-		if (req_bw <= link_bw) {
-			*link_setting = current_link_setting;
-			return true;
-		}
+	dm_helpers_dp_read_dpcd(
+		link->ctx,
+		link,
+		368,/*DpcdAddress_PSR_Enable_Cfg*/
+		&psr_configuration.raw,
+		sizeof(psr_configuration.raw));
 
-		if (current_link_setting.lane_count <
-				link->verified_link_cap.lane_count) {
-			current_link_setting.lane_count =
-					increase_lane_count(
-							current_link_setting.lane_count);
-		} else {
-			if (current_link_setting.link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) {
-				current_link_setting.link_rate_set++;
-				current_link_setting.link_rate =
-					link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
-				current_link_setting.lane_count =
-									initial_link_setting.lane_count;
-			} else
-				break;
-		}
-	}
-	return false;
-}
+	if (psr_configuration.bits.ENABLE) {
+		unsigned char dpcdbuf[3] = {0};
+		union psr_error_status psr_error_status;
+		union psr_sink_psr_status psr_sink_psr_status;
 
-static bool decide_edp_link_settings_with_dsc(struct dc_link *link,
-		struct dc_link_settings *link_setting,
-		uint32_t req_bw,
-		enum dc_link_rate max_link_rate)
-{
-	struct dc_link_settings initial_link_setting;
-	struct dc_link_settings current_link_setting;
-	uint32_t link_bw;
+		dm_helpers_dp_read_dpcd(
+			link->ctx,
+			link,
+			0x2006, /*DpcdAddress_PSR_Error_Status*/
+			(unsigned char *) dpcdbuf,
+			sizeof(dpcdbuf));
 
-	unsigned int policy = 0;
+		/*DPCD 2006h   ERROR STATUS*/
+		psr_error_status.raw = dpcdbuf[0];
+		/*DPCD 2008h   SINK PANEL SELF REFRESH STATUS*/
+		psr_sink_psr_status.raw = dpcdbuf[2];
 
-	policy = link->panel_config.dsc.force_dsc_edp_policy;
-	if (max_link_rate == LINK_RATE_UNKNOWN)
-		max_link_rate = link->verified_link_cap.link_rate;
-	/*
-	 * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
-	 * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
-	 */
-	if ((link->dpcd_caps.dpcd_rev.raw < DPCD_REV_13 ||
-			link->dpcd_caps.edp_supported_link_rates_count == 0)) {
-		/* for DSC enabled case, we search for minimum lane count */
-		memset(&initial_link_setting, 0, sizeof(initial_link_setting));
-		initial_link_setting.lane_count = LANE_COUNT_ONE;
-		initial_link_setting.link_rate = LINK_RATE_LOW;
-		initial_link_setting.link_spread = LINK_SPREAD_DISABLED;
-		initial_link_setting.use_link_rate_set = false;
-		initial_link_setting.link_rate_set = 0;
-		current_link_setting = initial_link_setting;
-		if (req_bw > dc_link_bandwidth_kbps(link, &link->verified_link_cap))
-			return false;
-
-		/* search for the minimum link setting that:
-		 * 1. is supported according to the link training result
-		 * 2. could support the b/w requested by the timing
-		 */
-		while (current_link_setting.link_rate <=
-				max_link_rate) {
-			link_bw = dc_link_bandwidth_kbps(
-					link,
-					&current_link_setting);
-			if (req_bw <= link_bw) {
-				*link_setting = current_link_setting;
-				return true;
-			}
-			if (policy) {
-				/* minimize lane */
-				if (current_link_setting.link_rate < max_link_rate) {
-					current_link_setting.link_rate =
-							increase_link_rate(link,
-									current_link_setting.link_rate);
-				} else {
-					if (current_link_setting.lane_count <
-									link->verified_link_cap.lane_count) {
-						current_link_setting.lane_count =
-								increase_lane_count(
-										current_link_setting.lane_count);
-						current_link_setting.link_rate = initial_link_setting.link_rate;
-					} else
-						break;
-				}
-			} else {
-				/* minimize link rate */
-				if (current_link_setting.lane_count <
-						link->verified_link_cap.lane_count) {
-					current_link_setting.lane_count =
-							increase_lane_count(
-									current_link_setting.lane_count);
-				} else {
-					current_link_setting.link_rate =
-							increase_link_rate(link,
-									current_link_setting.link_rate);
-					current_link_setting.lane_count =
-							initial_link_setting.lane_count;
-				}
-			}
-		}
-		return false;
-	}
-
-	/* if optimize edp link is supported */
-	memset(&initial_link_setting, 0, sizeof(initial_link_setting));
-	initial_link_setting.lane_count = LANE_COUNT_ONE;
-	initial_link_setting.link_rate = link->dpcd_caps.edp_supported_link_rates[0];
-	initial_link_setting.link_spread = LINK_SPREAD_DISABLED;
-	initial_link_setting.use_link_rate_set = true;
-	initial_link_setting.link_rate_set = 0;
-	current_link_setting = initial_link_setting;
-
-	/* search for the minimum link setting that:
-	 * 1. is supported according to the link training result
-	 * 2. could support the b/w requested by the timing
-	 */
-	while (current_link_setting.link_rate <=
-			max_link_rate) {
-		link_bw = dc_link_bandwidth_kbps(
-				link,
-				&current_link_setting);
-		if (req_bw <= link_bw) {
-			*link_setting = current_link_setting;
-			return true;
-		}
-		if (policy) {
-			/* minimize lane */
-			if (current_link_setting.link_rate_set <
-					link->dpcd_caps.edp_supported_link_rates_count
-					&& current_link_setting.link_rate < max_link_rate) {
-				current_link_setting.link_rate_set++;
-				current_link_setting.link_rate =
-					link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
-			} else {
-				if (current_link_setting.lane_count < link->verified_link_cap.lane_count) {
-					current_link_setting.lane_count =
-							increase_lane_count(
-									current_link_setting.lane_count);
-					current_link_setting.link_rate_set = initial_link_setting.link_rate_set;
-					current_link_setting.link_rate =
-						link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
-				} else
-					break;
-			}
-		} else {
-			/* minimize link rate */
-			if (current_link_setting.lane_count <
-					link->verified_link_cap.lane_count) {
-				current_link_setting.lane_count =
-						increase_lane_count(
-								current_link_setting.lane_count);
-			} else {
-				if (current_link_setting.link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) {
-					current_link_setting.link_rate_set++;
-					current_link_setting.link_rate =
-						link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
-					current_link_setting.lane_count =
-						initial_link_setting.lane_count;
-				} else
-					break;
-			}
-		}
-	}
-	return false;
-}
-
-static bool decide_mst_link_settings(const struct dc_link *link, struct dc_link_settings *link_setting)
-{
-	*link_setting = link->verified_link_cap;
-	return true;
-}
-
-bool decide_link_settings(struct dc_stream_state *stream,
-	struct dc_link_settings *link_setting)
-{
-	struct dc_link *link = stream->link;
-	uint32_t req_bw = dc_bandwidth_in_kbps_from_timing(&stream->timing);
-
-	memset(link_setting, 0, sizeof(*link_setting));
-
-	/* if preferred is specified through AMDDP, use it, if it's enough
-	 * to drive the mode
-	 */
-	if (link->preferred_link_setting.lane_count !=
-			LANE_COUNT_UNKNOWN &&
-			link->preferred_link_setting.link_rate !=
-					LINK_RATE_UNKNOWN) {
-		*link_setting = link->preferred_link_setting;
-		return true;
-	}
-
-	/* MST doesn't perform link training for now
-	 * TODO: add MST specific link training routine
-	 */
-	if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
-		decide_mst_link_settings(link, link_setting);
-	} else if (link->connector_signal == SIGNAL_TYPE_EDP) {
-		/* enable edp link optimization for DSC eDP case */
-		if (stream->timing.flags.DSC) {
-			enum dc_link_rate max_link_rate = LINK_RATE_UNKNOWN;
-
-			if (link->panel_config.dsc.force_dsc_edp_policy) {
-				/* calculate link max link rate cap*/
-				struct dc_link_settings tmp_link_setting;
-				struct dc_crtc_timing tmp_timing = stream->timing;
-				uint32_t orig_req_bw;
-
-				tmp_link_setting.link_rate = LINK_RATE_UNKNOWN;
-				tmp_timing.flags.DSC = 0;
-				orig_req_bw = dc_bandwidth_in_kbps_from_timing(&tmp_timing);
-				decide_edp_link_settings(link, &tmp_link_setting, orig_req_bw);
-				max_link_rate = tmp_link_setting.link_rate;
-			}
-			decide_edp_link_settings_with_dsc(link, link_setting, req_bw, max_link_rate);
-		} else {
-			decide_edp_link_settings(link, link_setting, req_bw);
-		}
-	} else {
-		decide_dp_link_settings(link, link_setting, req_bw);
-	}
-
-	return link_setting->lane_count != LANE_COUNT_UNKNOWN &&
-			link_setting->link_rate != LINK_RATE_UNKNOWN;
-}
-
-/*************************Short Pulse IRQ***************************/
-bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link)
-{
-	/*
-	 * Don't handle RX IRQ unless one of following is met:
-	 * 1) The link is established (cur_link_settings != unknown)
-	 * 2) We know we're dealing with a branch device, SST or MST
-	 */
-
-	if ((link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||
-		is_dp_branch_device(link))
-		return true;
-
-	return false;
-}
-
-static bool handle_hpd_irq_psr_sink(struct dc_link *link)
-{
-	union dpcd_psr_configuration psr_configuration;
-
-	if (!link->psr_settings.psr_feature_enabled)
-		return false;
-
-	dm_helpers_dp_read_dpcd(
-		link->ctx,
-		link,
-		368,/*DpcdAddress_PSR_Enable_Cfg*/
-		&psr_configuration.raw,
-		sizeof(psr_configuration.raw));
-
-	if (psr_configuration.bits.ENABLE) {
-		unsigned char dpcdbuf[3] = {0};
-		union psr_error_status psr_error_status;
-		union psr_sink_psr_status psr_sink_psr_status;
-
-		dm_helpers_dp_read_dpcd(
-			link->ctx,
-			link,
-			0x2006, /*DpcdAddress_PSR_Error_Status*/
-			(unsigned char *) dpcdbuf,
-			sizeof(dpcdbuf));
-
-		/*DPCD 2006h   ERROR STATUS*/
-		psr_error_status.raw = dpcdbuf[0];
-		/*DPCD 2008h   SINK PANEL SELF REFRESH STATUS*/
-		psr_sink_psr_status.raw = dpcdbuf[2];
-
-		if (psr_error_status.bits.LINK_CRC_ERROR ||
-				psr_error_status.bits.RFB_STORAGE_ERROR ||
-				psr_error_status.bits.VSC_SDP_ERROR) {
-			bool allow_active;
+		if (psr_error_status.bits.LINK_CRC_ERROR ||
+				psr_error_status.bits.RFB_STORAGE_ERROR ||
+				psr_error_status.bits.VSC_SDP_ERROR) {
+			bool allow_active;
 
 			/* Acknowledge and clear error bits */
 			dm_helpers_dp_write_dpcd(
@@ -1415,7 +535,7 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link)
 		lane++) {
 		dpcd_lane_adjust.raw =
 			get_nibble_at_index(&dpcd_lane_adjustment[0].raw, lane);
-		if (dp_get_link_encoding_format(&link->cur_link_settings) ==
+		if (link_dp_get_encoding_format(&link->cur_link_settings) ==
 				DP_8b_10b_ENCODING) {
 			link_training_settings.hw_lane_settings[lane].VOLTAGE_SWING =
 				(enum dc_voltage_swing)
@@ -1426,7 +546,7 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link)
 			link_training_settings.hw_lane_settings[lane].POST_CURSOR2 =
 				(enum dc_post_cursor2)
 				((dpcd_post_cursor_2_adjustment >> (lane * 2)) & 0x03);
-		} else if (dp_get_link_encoding_format(&link->cur_link_settings) ==
+		} else if (link_dp_get_encoding_format(&link->cur_link_settings) ==
 				DP_128b_132b_ENCODING) {
 			link_training_settings.hw_lane_settings[lane].FFE_PRESET.settings.level =
 					dpcd_lane_adjust.tx_ffe.PRESET_VALUE;
@@ -1652,1289 +772,224 @@ static void dp_test_get_audio_test_data(struct dc_link *link, bool disable_video
 	link->audio_test_data.pattern_type = test_pattern;
 
 	if (test_pattern == DP_TEST_PATTERN_AUDIO_SAWTOOTH) {
-		for (modes = 0; modes < pipe_ctx->stream->audio_info.mode_count; modes++) {
-			link->audio_test_data.pattern_period[modes] = dpcd_pattern_period[modes].bits.pattern_period;
-		}
-	}
-}
-
-void dc_link_dp_handle_automated_test(struct dc_link *link)
-{
-	union test_request test_request;
-	union test_response test_response;
-
-	memset(&test_request, 0, sizeof(test_request));
-	memset(&test_response, 0, sizeof(test_response));
-
-	core_link_read_dpcd(
-		link,
-		DP_TEST_REQUEST,
-		&test_request.raw,
-		sizeof(union test_request));
-	if (test_request.bits.LINK_TRAINING) {
-		/* ACK first to let DP RX test box monitor LT sequence */
-		test_response.bits.ACK = 1;
-		core_link_write_dpcd(
-			link,
-			DP_TEST_RESPONSE,
-			&test_response.raw,
-			sizeof(test_response));
-		dp_test_send_link_training(link);
-		/* no acknowledge request is needed again */
-		test_response.bits.ACK = 0;
-	}
-	if (test_request.bits.LINK_TEST_PATTRN) {
-		dp_test_send_link_test_pattern(link);
-		test_response.bits.ACK = 1;
-	}
-
-	if (test_request.bits.AUDIO_TEST_PATTERN) {
-		dp_test_get_audio_test_data(link, test_request.bits.TEST_AUDIO_DISABLED_VIDEO);
-		test_response.bits.ACK = 1;
-	}
-
-	if (test_request.bits.PHY_TEST_PATTERN) {
-		dp_test_send_phy_test_pattern(link);
-		test_response.bits.ACK = 1;
-	}
-
-	/* send request acknowledgment */
-	if (test_response.bits.ACK)
-		core_link_write_dpcd(
-			link,
-			DP_TEST_RESPONSE,
-			&test_response.raw,
-			sizeof(test_response));
-}
-
-void dc_link_dp_handle_link_loss(struct dc_link *link)
-{
-	int i;
-	struct pipe_ctx *pipe_ctx;
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
-		if (pipe_ctx && pipe_ctx->stream && pipe_ctx->stream->link == link)
-			break;
-	}
-
-	if (pipe_ctx == NULL || pipe_ctx->stream == NULL)
-		return;
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
-		if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off &&
-				pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe)
-			core_link_disable_stream(pipe_ctx);
-	}
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
-		if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off
-				&& pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe) {
-			// Always use max settings here for DP 1.4a LL Compliance CTS
-			if (link->is_automated) {
-				pipe_ctx->link_config.dp_link_settings.lane_count =
-						link->verified_link_cap.lane_count;
-				pipe_ctx->link_config.dp_link_settings.link_rate =
-						link->verified_link_cap.link_rate;
-				pipe_ctx->link_config.dp_link_settings.link_spread =
-						link->verified_link_cap.link_spread;
-			}
-			core_link_enable_stream(link->dc->current_state, pipe_ctx);
-		}
-	}
-}
-
-bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss,
-							bool defer_handling, bool *has_left_work)
-{
-	union hpd_irq_data hpd_irq_dpcd_data = {0};
-	union device_service_irq device_service_clear = {0};
-	enum dc_status result;
-	bool status = false;
-
-	if (out_link_loss)
-		*out_link_loss = false;
-
-	if (has_left_work)
-		*has_left_work = false;
-	/* For use cases related to down stream connection status change,
-	 * PSR and device auto test, refer to function handle_sst_hpd_irq
-	 * in DAL2.1*/
-
-	DC_LOG_HW_HPD_IRQ("%s: Got short pulse HPD on link %d\n",
-		__func__, link->link_index);
-
-
-	 /* All the "handle_hpd_irq_xxx()" methods
-		 * should be called only after
-		 * dal_dpsst_ls_read_hpd_irq_data
-		 * Order of calls is important too
-		 */
-	result = read_hpd_rx_irq_data(link, &hpd_irq_dpcd_data);
-	if (out_hpd_irq_dpcd_data)
-		*out_hpd_irq_dpcd_data = hpd_irq_dpcd_data;
-
-	if (result != DC_OK) {
-		DC_LOG_HW_HPD_IRQ("%s: DPCD read failed to obtain irq data\n",
-			__func__);
-		return false;
-	}
-
-	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.AUTOMATED_TEST) {
-		// Workaround for DP 1.4a LL Compliance CTS as USB4 has to share encoders unlike DP and USBC
-		link->is_automated = true;
-		device_service_clear.bits.AUTOMATED_TEST = 1;
-		core_link_write_dpcd(
-			link,
-			DP_DEVICE_SERVICE_IRQ_VECTOR,
-			&device_service_clear.raw,
-			sizeof(device_service_clear.raw));
-		device_service_clear.raw = 0;
-		if (defer_handling && has_left_work)
-			*has_left_work = true;
-		else
-			dc_link_dp_handle_automated_test(link);
-		return false;
-	}
-
-	if (!dc_link_dp_allow_hpd_rx_irq(link)) {
-		DC_LOG_HW_HPD_IRQ("%s: skipping HPD handling on %d\n",
-			__func__, link->link_index);
-		return false;
-	}
-
-	if (handle_hpd_irq_psr_sink(link))
-		/* PSR-related error was detected and handled */
-		return true;
-
-	/* If PSR-related error handled, Main link may be off,
-	 * so do not handle as a normal sink status change interrupt.
-	 */
-
-	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.UP_REQ_MSG_RDY) {
-		if (defer_handling && has_left_work)
-			*has_left_work = true;
-		return true;
-	}
-
-	/* check if we have MST msg and return since we poll for it */
-	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.DOWN_REP_MSG_RDY) {
-		if (defer_handling && has_left_work)
-			*has_left_work = true;
-		return false;
-	}
-
-	/* For now we only handle 'Downstream port status' case.
-	 * If we got sink count changed it means
-	 * Downstream port status changed,
-	 * then DM should call DC to do the detection.
-	 * NOTE: Do not handle link loss on eDP since it is internal link*/
-	if ((link->connector_signal != SIGNAL_TYPE_EDP) &&
-		hpd_rx_irq_check_link_loss_status(
-			link,
-			&hpd_irq_dpcd_data)) {
-		/* Connectivity log: link loss */
-		CONN_DATA_LINK_LOSS(link,
-					hpd_irq_dpcd_data.raw,
-					sizeof(hpd_irq_dpcd_data),
-					"Status: ");
-
-		if (defer_handling && has_left_work)
-			*has_left_work = true;
-		else
-			dc_link_dp_handle_link_loss(link);
-
-		status = false;
-		if (out_link_loss)
-			*out_link_loss = true;
-
-		dp_trace_link_loss_increment(link);
-	}
-
-	if (link->type == dc_connection_sst_branch &&
-		hpd_irq_dpcd_data.bytes.sink_cnt.bits.SINK_COUNT
-			!= link->dpcd_sink_count)
-		status = true;
-
-	/* reasons for HPD RX:
-	 * 1. Link Loss - ie Re-train the Link
-	 * 2. MST sideband message
-	 * 3. Automated Test - ie. Internal Commit
-	 * 4. CP (copy protection) - (not interesting for DM???)
-	 * 5. DRR
-	 * 6. Downstream Port status changed
-	 * -ie. Detect - this the only one
-	 * which is interesting for DM because
-	 * it must call dc_link_detect.
-	 */
-	return status;
-}
-
-/*query dpcd for version and mst cap addresses*/
-bool is_mst_supported(struct dc_link *link)
-{
-	bool mst          = false;
-	enum dc_status st = DC_OK;
-	union dpcd_rev rev;
-	union mstm_cap cap;
-
-	if (link->preferred_training_settings.mst_enable &&
-		*link->preferred_training_settings.mst_enable == false) {
-		return false;
-	}
-
-	rev.raw  = 0;
-	cap.raw  = 0;
-
-	st = core_link_read_dpcd(link, DP_DPCD_REV, &rev.raw,
-			sizeof(rev));
-
-	if (st == DC_OK && rev.raw >= DPCD_REV_12) {
-
-		st = core_link_read_dpcd(link, DP_MSTM_CAP,
-				&cap.raw, sizeof(cap));
-		if (st == DC_OK && cap.bits.MST_CAP == 1)
-			mst = true;
-	}
-	return mst;
-
-}
-
-bool is_dp_active_dongle(const struct dc_link *link)
-{
-	return (link->dpcd_caps.dongle_type >= DISPLAY_DONGLE_DP_VGA_CONVERTER) &&
-				(link->dpcd_caps.dongle_type <= DISPLAY_DONGLE_DP_HDMI_CONVERTER);
-}
-
-bool is_dp_branch_device(const struct dc_link *link)
-{
-	return link->dpcd_caps.is_branch_dev;
-}
-
-static int translate_dpcd_max_bpc(enum dpcd_downstream_port_max_bpc bpc)
-{
-	switch (bpc) {
-	case DOWN_STREAM_MAX_8BPC:
-		return 8;
-	case DOWN_STREAM_MAX_10BPC:
-		return 10;
-	case DOWN_STREAM_MAX_12BPC:
-		return 12;
-	case DOWN_STREAM_MAX_16BPC:
-		return 16;
-	default:
-		break;
-	}
-
-	return -1;
-}
-uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw)
-{
-	switch (bw) {
-	case 0b001:
-		return 9000000;
-	case 0b010:
-		return 18000000;
-	case 0b011:
-		return 24000000;
-	case 0b100:
-		return 32000000;
-	case 0b101:
-		return 40000000;
-	case 0b110:
-		return 48000000;
-	}
-
-	return 0;
-}
-
-/*
- * Return PCON's post FRL link training supported BW if its non-zero, otherwise return max_supported_frl_bw.
- */
-static uint32_t intersect_frl_link_bw_support(
-	const uint32_t max_supported_frl_bw_in_kbps,
-	const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
-{
-	uint32_t supported_bw_in_kbps = max_supported_frl_bw_in_kbps;
-
-	// HDMI_ENCODED_LINK_BW bits are only valid if HDMI Link Configuration bit is 1 (FRL mode)
-	if (hdmi_encoded_link_bw.bits.FRL_MODE) {
-		if (hdmi_encoded_link_bw.bits.BW_48Gbps)
-			supported_bw_in_kbps = 48000000;
-		else if (hdmi_encoded_link_bw.bits.BW_40Gbps)
-			supported_bw_in_kbps = 40000000;
-		else if (hdmi_encoded_link_bw.bits.BW_32Gbps)
-			supported_bw_in_kbps = 32000000;
-		else if (hdmi_encoded_link_bw.bits.BW_24Gbps)
-			supported_bw_in_kbps = 24000000;
-		else if (hdmi_encoded_link_bw.bits.BW_18Gbps)
-			supported_bw_in_kbps = 18000000;
-		else if (hdmi_encoded_link_bw.bits.BW_9Gbps)
-			supported_bw_in_kbps = 9000000;
-	}
-
-	return supported_bw_in_kbps;
-}
-
-static void read_dp_device_vendor_id(struct dc_link *link)
-{
-	struct dp_device_vendor_id dp_id;
-
-	/* read IEEE branch device id */
-	core_link_read_dpcd(
-		link,
-		DP_BRANCH_OUI,
-		(uint8_t *)&dp_id,
-		sizeof(dp_id));
-
-	link->dpcd_caps.branch_dev_id =
-		(dp_id.ieee_oui[0] << 16) +
-		(dp_id.ieee_oui[1] << 8) +
-		dp_id.ieee_oui[2];
-
-	memmove(
-		link->dpcd_caps.branch_dev_name,
-		dp_id.ieee_device_id,
-		sizeof(dp_id.ieee_device_id));
-}
-
-
-
-static void get_active_converter_info(
-	uint8_t data, struct dc_link *link)
-{
-	union dp_downstream_port_present ds_port = { .byte = data };
-	memset(&link->dpcd_caps.dongle_caps, 0, sizeof(link->dpcd_caps.dongle_caps));
-
-	/* decode converter info*/
-	if (!ds_port.fields.PORT_PRESENT) {
-		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
-		set_dongle_type(link->ddc,
-				link->dpcd_caps.dongle_type);
-		link->dpcd_caps.is_branch_dev = false;
-		return;
-	}
-
-	/* DPCD 0x5 bit 0 = 1, it indicate it's branch device */
-	link->dpcd_caps.is_branch_dev = ds_port.fields.PORT_PRESENT;
-
-	switch (ds_port.fields.PORT_TYPE) {
-	case DOWNSTREAM_VGA:
-		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_DP_VGA_CONVERTER;
-		break;
-	case DOWNSTREAM_DVI_HDMI_DP_PLUS_PLUS:
-		/* At this point we don't know is it DVI or HDMI or DP++,
-		 * assume DVI.*/
-		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_DP_DVI_CONVERTER;
-		break;
-	default:
-		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
-		break;
-	}
-
-	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_11) {
-		uint8_t det_caps[16]; /* CTS 4.2.2.7 expects source to read Detailed Capabilities Info : 00080h-0008F.*/
-		union dwnstream_port_caps_byte0 *port_caps =
-			(union dwnstream_port_caps_byte0 *)det_caps;
-		if (core_link_read_dpcd(link, DP_DOWNSTREAM_PORT_0,
-				det_caps, sizeof(det_caps)) == DC_OK) {
-
-			switch (port_caps->bits.DWN_STRM_PORTX_TYPE) {
-			/*Handle DP case as DONGLE_NONE*/
-			case DOWN_STREAM_DETAILED_DP:
-				link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
-				break;
-			case DOWN_STREAM_DETAILED_VGA:
-				link->dpcd_caps.dongle_type =
-					DISPLAY_DONGLE_DP_VGA_CONVERTER;
-				break;
-			case DOWN_STREAM_DETAILED_DVI:
-				link->dpcd_caps.dongle_type =
-					DISPLAY_DONGLE_DP_DVI_CONVERTER;
-				break;
-			case DOWN_STREAM_DETAILED_HDMI:
-			case DOWN_STREAM_DETAILED_DP_PLUS_PLUS:
-				/*Handle DP++ active converter case, process DP++ case as HDMI case according DP1.4 spec*/
-				link->dpcd_caps.dongle_type =
-					DISPLAY_DONGLE_DP_HDMI_CONVERTER;
-
-				link->dpcd_caps.dongle_caps.dongle_type = link->dpcd_caps.dongle_type;
-				if (ds_port.fields.DETAILED_CAPS) {
-
-					union dwnstream_port_caps_byte3_hdmi
-						hdmi_caps = {.raw = det_caps[3] };
-					union dwnstream_port_caps_byte2
-						hdmi_color_caps = {.raw = det_caps[2] };
-					link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz =
-						det_caps[1] * 2500;
-
-					link->dpcd_caps.dongle_caps.is_dp_hdmi_s3d_converter =
-						hdmi_caps.bits.FRAME_SEQ_TO_FRAME_PACK;
-					/*YCBCR capability only for HDMI case*/
-					if (port_caps->bits.DWN_STRM_PORTX_TYPE
-							== DOWN_STREAM_DETAILED_HDMI) {
-						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr422_pass_through =
-								hdmi_caps.bits.YCrCr422_PASS_THROUGH;
-						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr420_pass_through =
-								hdmi_caps.bits.YCrCr420_PASS_THROUGH;
-						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr422_converter =
-								hdmi_caps.bits.YCrCr422_CONVERSION;
-						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr420_converter =
-								hdmi_caps.bits.YCrCr420_CONVERSION;
-					}
-
-					link->dpcd_caps.dongle_caps.dp_hdmi_max_bpc =
-						translate_dpcd_max_bpc(
-							hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT);
-
-					if (link->dc->caps.dp_hdmi21_pcon_support) {
-						union hdmi_encoded_link_bw hdmi_encoded_link_bw;
-
-						link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps =
-								dc_link_bw_kbps_from_raw_frl_link_rate_data(
-										hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT);
-
-						// Intersect reported max link bw support with the supported link rate post FRL link training
-						if (core_link_read_dpcd(link, DP_PCON_HDMI_POST_FRL_STATUS,
-								&hdmi_encoded_link_bw.raw, sizeof(hdmi_encoded_link_bw)) == DC_OK) {
-							link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps = intersect_frl_link_bw_support(
-									link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps,
-									hdmi_encoded_link_bw);
-						}
-
-						if (link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps > 0)
-							link->dpcd_caps.dongle_caps.extendedCapValid = true;
-					}
-
-					if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz != 0)
-						link->dpcd_caps.dongle_caps.extendedCapValid = true;
-				}
-
-				break;
-			}
-		}
-	}
-
-	set_dongle_type(link->ddc, link->dpcd_caps.dongle_type);
-
-	{
-		struct dp_sink_hw_fw_revision dp_hw_fw_revision;
-
-		core_link_read_dpcd(
-			link,
-			DP_BRANCH_REVISION_START,
-			(uint8_t *)&dp_hw_fw_revision,
-			sizeof(dp_hw_fw_revision));
-
-		link->dpcd_caps.branch_hw_revision =
-			dp_hw_fw_revision.ieee_hw_rev;
-
-		memmove(
-			link->dpcd_caps.branch_fw_revision,
-			dp_hw_fw_revision.ieee_fw_rev,
-			sizeof(dp_hw_fw_revision.ieee_fw_rev));
-	}
-	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14 &&
-			link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) {
-		union dp_dfp_cap_ext dfp_cap_ext;
-		memset(&dfp_cap_ext, '\0', sizeof (dfp_cap_ext));
-		core_link_read_dpcd(
-				link,
-				DP_DFP_CAPABILITY_EXTENSION_SUPPORT,
-				dfp_cap_ext.raw,
-				sizeof(dfp_cap_ext.raw));
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.supported = dfp_cap_ext.fields.supported;
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.max_pixel_rate_in_mps =
-				dfp_cap_ext.fields.max_pixel_rate_in_mps[0] +
-				(dfp_cap_ext.fields.max_pixel_rate_in_mps[1] << 8);
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_h_active_width =
-				dfp_cap_ext.fields.max_video_h_active_width[0] +
-				(dfp_cap_ext.fields.max_video_h_active_width[1] << 8);
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_v_active_height =
-				dfp_cap_ext.fields.max_video_v_active_height[0] +
-				(dfp_cap_ext.fields.max_video_v_active_height[1] << 8);
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.encoding_format_caps =
-				dfp_cap_ext.fields.encoding_format_caps;
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.rgb_color_depth_caps =
-				dfp_cap_ext.fields.rgb_color_depth_caps;
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.ycbcr444_color_depth_caps =
-				dfp_cap_ext.fields.ycbcr444_color_depth_caps;
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.ycbcr422_color_depth_caps =
-				dfp_cap_ext.fields.ycbcr422_color_depth_caps;
-		link->dpcd_caps.dongle_caps.dfp_cap_ext.ycbcr420_color_depth_caps =
-				dfp_cap_ext.fields.ycbcr420_color_depth_caps;
-		DC_LOG_DP2("DFP capability extension is read at link %d", link->link_index);
-		DC_LOG_DP2("\tdfp_cap_ext.supported = %s", link->dpcd_caps.dongle_caps.dfp_cap_ext.supported ? "true" : "false");
-		DC_LOG_DP2("\tdfp_cap_ext.max_pixel_rate_in_mps = %d", link->dpcd_caps.dongle_caps.dfp_cap_ext.max_pixel_rate_in_mps);
-		DC_LOG_DP2("\tdfp_cap_ext.max_video_h_active_width = %d", link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_h_active_width);
-		DC_LOG_DP2("\tdfp_cap_ext.max_video_v_active_height = %d", link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_v_active_height);
-	}
-}
-
-static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data,
-		int length)
-{
-	int retry = 0;
-	union dp_downstream_port_present ds_port = { 0 };
-
-	if (!link->dpcd_caps.dpcd_rev.raw) {
-		do {
-			dc_link_dp_receiver_power_ctrl(link, true);
-			core_link_read_dpcd(link, DP_DPCD_REV,
-							dpcd_data, length);
-			link->dpcd_caps.dpcd_rev.raw = dpcd_data[
-				DP_DPCD_REV -
-				DP_DPCD_REV];
-		} while (retry++ < 4 && !link->dpcd_caps.dpcd_rev.raw);
-	}
-
-	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
-				 DP_DPCD_REV];
-
-	if (link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER) {
-		switch (link->dpcd_caps.branch_dev_id) {
-		/* 0010FA active dongles (DP-VGA, DP-DLDVI converters) power down
-		 * all internal circuits including AUX communication preventing
-		 * reading DPCD table and EDID (spec violation).
-		 * Encoder will skip DP RX power down on disable_output to
-		 * keep receiver powered all the time.*/
-		case DP_BRANCH_DEVICE_ID_0010FA:
-		case DP_BRANCH_DEVICE_ID_0080E1:
-		case DP_BRANCH_DEVICE_ID_00E04C:
-			link->wa_flags.dp_keep_receiver_powered = true;
-			break;
-
-		/* TODO: May need work around for other dongles. */
-		default:
-			link->wa_flags.dp_keep_receiver_powered = false;
-			break;
-		}
-	} else
-		link->wa_flags.dp_keep_receiver_powered = false;
-}
-
-/* Read additional sink caps defined in source specific DPCD area
- * This function currently only reads from SinkCapability address (DP_SOURCE_SINK_CAP)
- * TODO: Add FS caps and read from DP_SOURCE_SINK_FS_CAP as well
- */
-static bool dpcd_read_sink_ext_caps(struct dc_link *link)
-{
-	uint8_t dpcd_data;
-
-	if (!link)
-		return false;
-
-	if (core_link_read_dpcd(link, DP_SOURCE_SINK_CAP, &dpcd_data, 1) != DC_OK)
-		return false;
-
-	link->dpcd_sink_ext_caps.raw = dpcd_data;
-	return true;
-}
-
-enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link)
-{
-	uint8_t lttpr_dpcd_data[8];
-	enum dc_status status = DC_ERROR_UNEXPECTED;
-	bool is_lttpr_present = false;
-
-	/* Logic to determine LTTPR support*/
-	bool vbios_lttpr_interop = link->dc->caps.vbios_lttpr_aware;
-
-	if (!vbios_lttpr_interop || !link->dc->caps.extended_aux_timeout_support)
-		return false;
-
-	/* By reading LTTPR capability, RX assumes that we will enable
-	 * LTTPR extended aux timeout if LTTPR is present.
-	 */
-	status = core_link_read_dpcd(
-			link,
-			DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV,
-			lttpr_dpcd_data,
-			sizeof(lttpr_dpcd_data));
-
-	link->dpcd_caps.lttpr_caps.revision.raw =
-			lttpr_dpcd_data[DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	link->dpcd_caps.lttpr_caps.max_link_rate =
-			lttpr_dpcd_data[DP_MAX_LINK_RATE_PHY_REPEATER -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	link->dpcd_caps.lttpr_caps.phy_repeater_cnt =
-			lttpr_dpcd_data[DP_PHY_REPEATER_CNT -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	link->dpcd_caps.lttpr_caps.max_lane_count =
-			lttpr_dpcd_data[DP_MAX_LANE_COUNT_PHY_REPEATER -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	link->dpcd_caps.lttpr_caps.mode =
-			lttpr_dpcd_data[DP_PHY_REPEATER_MODE -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	link->dpcd_caps.lttpr_caps.max_ext_timeout =
-			lttpr_dpcd_data[DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-	link->dpcd_caps.lttpr_caps.main_link_channel_coding.raw =
-			lttpr_dpcd_data[DP_MAIN_LINK_CHANNEL_CODING_PHY_REPEATER -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.raw =
-			lttpr_dpcd_data[DP_PHY_REPEATER_128B132B_RATES -
-							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
-
-	/* If this chip cap is set, at least one retimer must exist in the chain
-	 * Override count to 1 if we receive a known bad count (0 or an invalid value) */
-	if (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN &&
-			(dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) == 0)) {
-		ASSERT(0);
-		link->dpcd_caps.lttpr_caps.phy_repeater_cnt = 0x80;
-		DC_LOG_DC("lttpr_caps forced phy_repeater_cnt = %d\n", link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
-	}
-
-	/* Attempt to train in LTTPR transparent mode if repeater count exceeds 8. */
-	is_lttpr_present = dp_is_lttpr_present(link);
-
-	if (is_lttpr_present)
-		CONN_DATA_DETECT(link, lttpr_dpcd_data, sizeof(lttpr_dpcd_data), "LTTPR Caps: ");
-
-	DC_LOG_DC("is_lttpr_present = %d\n", is_lttpr_present);
-	return status;
-}
-
-bool dp_is_lttpr_present(struct dc_link *link)
-{
-	return (dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) != 0 &&
-			link->dpcd_caps.lttpr_caps.max_lane_count > 0 &&
-			link->dpcd_caps.lttpr_caps.max_lane_count <= 4 &&
-			link->dpcd_caps.lttpr_caps.revision.raw >= 0x14);
-}
-
-static bool get_usbc_cable_id(struct dc_link *link, union dp_cable_id *cable_id)
-{
-	union dmub_rb_cmd cmd;
-
-	if (!link->ctx->dmub_srv ||
-			link->ep_type != DISPLAY_ENDPOINT_PHY ||
-			link->link_enc->features.flags.bits.DP_IS_USB_C == 0)
-		return false;
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.cable_id.header.type = DMUB_CMD_GET_USBC_CABLE_ID;
-	cmd.cable_id.header.payload_bytes = sizeof(cmd.cable_id.data);
-	cmd.cable_id.data.input.phy_inst = resource_transmitter_to_phy_idx(
-			link->dc, link->link_enc->transmitter);
-	if (dc_dmub_srv_cmd_with_reply_data(link->ctx->dmub_srv, &cmd) &&
-			cmd.cable_id.header.ret_status == 1) {
-		cable_id->raw = cmd.cable_id.data.output_raw;
-		DC_LOG_DC("usbc_cable_id = %d.\n", cable_id->raw);
-	}
-	return cmd.cable_id.header.ret_status == 1;
-}
-
-static union dp_cable_id intersect_cable_id(
-		union dp_cable_id *a, union dp_cable_id *b)
-{
-	union dp_cable_id out;
-
-	out.bits.UHBR10_20_CAPABILITY = MIN(a->bits.UHBR10_20_CAPABILITY,
-			b->bits.UHBR10_20_CAPABILITY);
-	out.bits.UHBR13_5_CAPABILITY = MIN(a->bits.UHBR13_5_CAPABILITY,
-			b->bits.UHBR13_5_CAPABILITY);
-	out.bits.CABLE_TYPE = MAX(a->bits.CABLE_TYPE, b->bits.CABLE_TYPE);
-
-	return out;
-}
-
-static void retrieve_cable_id(struct dc_link *link)
-{
-	union dp_cable_id usbc_cable_id;
-
-	link->dpcd_caps.cable_id.raw = 0;
-	core_link_read_dpcd(link, DP_CABLE_ATTRIBUTES_UPDATED_BY_DPRX,
-			&link->dpcd_caps.cable_id.raw, sizeof(uint8_t));
-
-	if (get_usbc_cable_id(link, &usbc_cable_id))
-		link->dpcd_caps.cable_id = intersect_cable_id(
-				&link->dpcd_caps.cable_id, &usbc_cable_id);
-}
-
-static enum dc_status wake_up_aux_channel(struct dc_link *link)
-{
-	enum dc_status status = DC_ERROR_UNEXPECTED;
-	uint32_t aux_channel_retry_cnt = 0;
-	uint8_t dpcd_power_state = '\0';
-
-	while (status != DC_OK && aux_channel_retry_cnt < 10) {
-		status = core_link_read_dpcd(link, DP_SET_POWER,
-				&dpcd_power_state, sizeof(dpcd_power_state));
-
-		/* Delay 1 ms if AUX CH is in power down state. Based on spec
-		 * section 2.3.1.2, if AUX CH may be powered down due to
-		 * write to DPCD 600h = 2. Sink AUX CH is monitoring differential
-		 * signal and may need up to 1 ms before being able to reply.
-		 */
-		if (status != DC_OK || dpcd_power_state == DP_SET_POWER_D3) {
-			udelay(1000);
-			aux_channel_retry_cnt++;
-		}
-	}
-
-	if (status != DC_OK) {
-		dpcd_power_state = DP_SET_POWER_D0;
-		status = core_link_write_dpcd(
-				link,
-				DP_SET_POWER,
-				&dpcd_power_state,
-				sizeof(dpcd_power_state));
-
-		dpcd_power_state = DP_SET_POWER_D3;
-		status = core_link_write_dpcd(
-				link,
-				DP_SET_POWER,
-				&dpcd_power_state,
-				sizeof(dpcd_power_state));
-		return DC_ERROR_UNEXPECTED;
-	}
-
-	return DC_OK;
-}
-
-static bool retrieve_link_cap(struct dc_link *link)
-{
-	/* DP_ADAPTER_CAP - DP_DPCD_REV + 1 == 16 and also DP_DSC_BITS_PER_PIXEL_INC - DP_DSC_SUPPORT + 1 == 16,
-	 * which means size 16 will be good for both of those DPCD register block reads
-	 */
-	uint8_t dpcd_data[16];
-	/*Only need to read 1 byte starting from DP_DPRX_FEATURE_ENUMERATION_LIST.
-	 */
-	uint8_t dpcd_dprx_data = '\0';
-
-	struct dp_device_vendor_id sink_id;
-	union down_stream_port_count down_strm_port_count;
-	union edp_configuration_cap edp_config_cap;
-	union dp_downstream_port_present ds_port = { 0 };
-	enum dc_status status = DC_ERROR_UNEXPECTED;
-	uint32_t read_dpcd_retry_cnt = 3;
-	int i;
-	struct dp_sink_hw_fw_revision dp_hw_fw_revision;
-	const uint32_t post_oui_delay = 30; // 30ms
-
-	memset(dpcd_data, '\0', sizeof(dpcd_data));
-	memset(&down_strm_port_count,
-		'\0', sizeof(union down_stream_port_count));
-	memset(&edp_config_cap, '\0',
-		sizeof(union edp_configuration_cap));
-
-	/* if extended timeout is supported in hardware,
-	 * default to LTTPR timeout (3.2ms) first as a W/A for DP link layer
-	 * CTS 4.2.1.1 regression introduced by CTS specs requirement update.
-	 */
-	try_to_configure_aux_timeout(link->ddc,
-			LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD);
-
-	status = dp_retrieve_lttpr_cap(link);
-
-	if (status != DC_OK) {
-		status = wake_up_aux_channel(link);
-		if (status == DC_OK)
-			dp_retrieve_lttpr_cap(link);
-		else
-			return false;
-	}
-
-	if (dp_is_lttpr_present(link))
-		configure_lttpr_mode_transparent(link);
-
-	/* Read DP tunneling information. */
-	status = dpcd_get_tunneling_device_data(link);
-
-	dpcd_set_source_specific_data(link);
-	/* Sink may need to configure internals based on vendor, so allow some
-	 * time before proceeding with possibly vendor specific transactions
-	 */
-	msleep(post_oui_delay);
-
-	for (i = 0; i < read_dpcd_retry_cnt; i++) {
-		status = core_link_read_dpcd(
-				link,
-				DP_DPCD_REV,
-				dpcd_data,
-				sizeof(dpcd_data));
-		if (status == DC_OK)
-			break;
-	}
-
-
-	if (status != DC_OK) {
-		dm_error("%s: Read receiver caps dpcd data failed.\n", __func__);
-		return false;
-	}
-
-	if (!dp_is_lttpr_present(link))
-		try_to_configure_aux_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD);
-
-
-	{
-		union training_aux_rd_interval aux_rd_interval;
-
-		aux_rd_interval.raw =
-			dpcd_data[DP_TRAINING_AUX_RD_INTERVAL];
-
-		link->dpcd_caps.ext_receiver_cap_field_present =
-				aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1 ? true:false;
-
-		if (aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1) {
-			uint8_t ext_cap_data[16];
-
-			memset(ext_cap_data, '\0', sizeof(ext_cap_data));
-			for (i = 0; i < read_dpcd_retry_cnt; i++) {
-				status = core_link_read_dpcd(
-				link,
-				DP_DP13_DPCD_REV,
-				ext_cap_data,
-				sizeof(ext_cap_data));
-				if (status == DC_OK) {
-					memcpy(dpcd_data, ext_cap_data, sizeof(dpcd_data));
-					break;
-				}
-			}
-			if (status != DC_OK)
-				dm_error("%s: Read extend caps data failed, use cap from dpcd 0.\n", __func__);
-		}
-	}
-
-	link->dpcd_caps.dpcd_rev.raw =
-			dpcd_data[DP_DPCD_REV - DP_DPCD_REV];
-
-	if (link->dpcd_caps.ext_receiver_cap_field_present) {
-		for (i = 0; i < read_dpcd_retry_cnt; i++) {
-			status = core_link_read_dpcd(
-					link,
-					DP_DPRX_FEATURE_ENUMERATION_LIST,
-					&dpcd_dprx_data,
-					sizeof(dpcd_dprx_data));
-			if (status == DC_OK)
-				break;
-		}
-
-		link->dpcd_caps.dprx_feature.raw = dpcd_dprx_data;
-
-		if (status != DC_OK)
-			dm_error("%s: Read DPRX caps data failed.\n", __func__);
-	}
-
-	else {
-		link->dpcd_caps.dprx_feature.raw = 0;
-	}
-
-
-	/* Error condition checking...
-	 * It is impossible for Sink to report Max Lane Count = 0.
-	 * It is possible for Sink to report Max Link Rate = 0, if it is
-	 * an eDP device that is reporting specialized link rates in the
-	 * SUPPORTED_LINK_RATE table.
-	 */
-	if (dpcd_data[DP_MAX_LANE_COUNT - DP_DPCD_REV] == 0)
-		return false;
-
-	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
-				 DP_DPCD_REV];
-
-	read_dp_device_vendor_id(link);
-
-	/* TODO - decouple raw mst capability from policy decision */
-	link->dpcd_caps.is_mst_capable = is_mst_supported(link);
-
-	get_active_converter_info(ds_port.byte, link);
-
-	dp_wa_power_up_0010FA(link, dpcd_data, sizeof(dpcd_data));
-
-	down_strm_port_count.raw = dpcd_data[DP_DOWN_STREAM_PORT_COUNT -
-				 DP_DPCD_REV];
-
-	link->dpcd_caps.allow_invalid_MSA_timing_param =
-		down_strm_port_count.bits.IGNORE_MSA_TIMING_PARAM;
-
-	link->dpcd_caps.max_ln_count.raw = dpcd_data[
-		DP_MAX_LANE_COUNT - DP_DPCD_REV];
-
-	link->dpcd_caps.max_down_spread.raw = dpcd_data[
-		DP_MAX_DOWNSPREAD - DP_DPCD_REV];
-
-	link->reported_link_cap.lane_count =
-		link->dpcd_caps.max_ln_count.bits.MAX_LANE_COUNT;
-	link->reported_link_cap.link_rate = get_link_rate_from_max_link_bw(
-			dpcd_data[DP_MAX_LINK_RATE - DP_DPCD_REV]);
-	link->reported_link_cap.link_spread =
-		link->dpcd_caps.max_down_spread.bits.MAX_DOWN_SPREAD ?
-		LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED;
-
-	edp_config_cap.raw = dpcd_data[
-		DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV];
-	link->dpcd_caps.panel_mode_edp =
-		edp_config_cap.bits.ALT_SCRAMBLER_RESET;
-	link->dpcd_caps.dpcd_display_control_capable =
-		edp_config_cap.bits.DPCD_DISPLAY_CONTROL_CAPABLE;
-	link->dpcd_caps.channel_coding_cap.raw =
-			dpcd_data[DP_MAIN_LINK_CHANNEL_CODING - DP_DPCD_REV];
-	link->test_pattern_enabled = false;
-	link->compliance_test_state.raw = 0;
-
-	/* read sink count */
-	core_link_read_dpcd(link,
-			DP_SINK_COUNT,
-			&link->dpcd_caps.sink_count.raw,
-			sizeof(link->dpcd_caps.sink_count.raw));
-
-	/* read sink ieee oui */
-	core_link_read_dpcd(link,
-			DP_SINK_OUI,
-			(uint8_t *)(&sink_id),
-			sizeof(sink_id));
+		for (modes = 0; modes < pipe_ctx->stream->audio_info.mode_count; modes++) {
+			link->audio_test_data.pattern_period[modes] = dpcd_pattern_period[modes].bits.pattern_period;
+		}
+	}
+}
 
-	link->dpcd_caps.sink_dev_id =
-			(sink_id.ieee_oui[0] << 16) +
-			(sink_id.ieee_oui[1] << 8) +
-			(sink_id.ieee_oui[2]);
+void dc_link_dp_handle_automated_test(struct dc_link *link)
+{
+	union test_request test_request;
+	union test_response test_response;
 
-	memmove(
-		link->dpcd_caps.sink_dev_id_str,
-		sink_id.ieee_device_id,
-		sizeof(sink_id.ieee_device_id));
+	memset(&test_request, 0, sizeof(test_request));
+	memset(&test_response, 0, sizeof(test_response));
 
 	core_link_read_dpcd(
 		link,
-		DP_SINK_HW_REVISION_START,
-		(uint8_t *)&dp_hw_fw_revision,
-		sizeof(dp_hw_fw_revision));
-
-	link->dpcd_caps.sink_hw_revision =
-		dp_hw_fw_revision.ieee_hw_rev;
-
-	memmove(
-		link->dpcd_caps.sink_fw_revision,
-		dp_hw_fw_revision.ieee_fw_rev,
-		sizeof(dp_hw_fw_revision.ieee_fw_rev));
-
-	/* Quirk for Apple MBP 2018 15" Retina panels: wrong DP_MAX_LINK_RATE */
-	{
-		uint8_t str_mbp_2018[] = { 101, 68, 21, 103, 98, 97 };
-		uint8_t fwrev_mbp_2018[] = { 7, 4 };
-		uint8_t fwrev_mbp_2018_vega[] = { 8, 4 };
-
-		/* We also check for the firmware revision as 16,1 models have an
-		 * identical device id and are incorrectly quirked otherwise.
-		 */
-		if ((link->dpcd_caps.sink_dev_id == 0x0010fa) &&
-		    !memcmp(link->dpcd_caps.sink_dev_id_str, str_mbp_2018,
-			     sizeof(str_mbp_2018)) &&
-		    (!memcmp(link->dpcd_caps.sink_fw_revision, fwrev_mbp_2018,
-			     sizeof(fwrev_mbp_2018)) ||
-		    !memcmp(link->dpcd_caps.sink_fw_revision, fwrev_mbp_2018_vega,
-			     sizeof(fwrev_mbp_2018_vega)))) {
-			link->reported_link_cap.link_rate = LINK_RATE_RBR2;
-		}
+		DP_TEST_REQUEST,
+		&test_request.raw,
+		sizeof(union test_request));
+	if (test_request.bits.LINK_TRAINING) {
+		/* ACK first to let DP RX test box monitor LT sequence */
+		test_response.bits.ACK = 1;
+		core_link_write_dpcd(
+			link,
+			DP_TEST_RESPONSE,
+			&test_response.raw,
+			sizeof(test_response));
+		dp_test_send_link_training(link);
+		/* no acknowledge request is needed again */
+		test_response.bits.ACK = 0;
 	}
-
-	memset(&link->dpcd_caps.dsc_caps, '\0',
-			sizeof(link->dpcd_caps.dsc_caps));
-	memset(&link->dpcd_caps.fec_cap, '\0', sizeof(link->dpcd_caps.fec_cap));
-	/* Read DSC and FEC sink capabilities if DP revision is 1.4 and up */
-	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14) {
-		status = core_link_read_dpcd(
-				link,
-				DP_FEC_CAPABILITY,
-				&link->dpcd_caps.fec_cap.raw,
-				sizeof(link->dpcd_caps.fec_cap.raw));
-		status = core_link_read_dpcd(
-				link,
-				DP_DSC_SUPPORT,
-				link->dpcd_caps.dsc_caps.dsc_basic_caps.raw,
-				sizeof(link->dpcd_caps.dsc_caps.dsc_basic_caps.raw));
-		if (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) {
-			status = core_link_read_dpcd(
-					link,
-					DP_DSC_BRANCH_OVERALL_THROUGHPUT_0,
-					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.raw,
-					sizeof(link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.raw));
-			DC_LOG_DSC("DSC branch decoder capability is read at link %d", link->link_index);
-			DC_LOG_DSC("\tBRANCH_OVERALL_THROUGHPUT_0 = 0x%02x",
-					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.fields.BRANCH_OVERALL_THROUGHPUT_0);
-			DC_LOG_DSC("\tBRANCH_OVERALL_THROUGHPUT_1 = 0x%02x",
-					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.fields.BRANCH_OVERALL_THROUGHPUT_1);
-			DC_LOG_DSC("\tBRANCH_MAX_LINE_WIDTH 0x%02x",
-					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.fields.BRANCH_MAX_LINE_WIDTH);
-		}
-
-		/* Apply work around to disable FEC and DSC for USB4 tunneling in TBT3 compatibility mode
-		 * only if required.
-		 */
-		if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA &&
-				link->dc->debug.dpia_debug.bits.enable_force_tbt3_work_around &&
-				link->dpcd_caps.is_branch_dev &&
-				link->dpcd_caps.branch_dev_id == DP_BRANCH_DEVICE_ID_90CC24 &&
-				link->dpcd_caps.branch_hw_revision == DP_BRANCH_HW_REV_10 &&
-				(link->dpcd_caps.fec_cap.bits.FEC_CAPABLE ||
-				link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT)) {
-			/* A TBT3 device is expected to report no support for FEC or DSC to a USB4 DPIA.
-			 * Clear FEC and DSC capabilities as a work around if that is not the case.
-			 */
-			link->wa_flags.dpia_forced_tbt3_mode = true;
-			memset(&link->dpcd_caps.dsc_caps, '\0', sizeof(link->dpcd_caps.dsc_caps));
-			memset(&link->dpcd_caps.fec_cap, '\0', sizeof(link->dpcd_caps.fec_cap));
-			DC_LOG_DSC("Clear DSC SUPPORT for USB4 link(%d) in TBT3 compatibility mode", link->link_index);
-		} else
-			link->wa_flags.dpia_forced_tbt3_mode = false;
+	if (test_request.bits.LINK_TEST_PATTRN) {
+		dp_test_send_link_test_pattern(link);
+		test_response.bits.ACK = 1;
 	}
 
-	if (!dpcd_read_sink_ext_caps(link))
-		link->dpcd_sink_ext_caps.raw = 0;
-
-	if (link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED) {
-		DC_LOG_DP2("128b/132b encoding is supported at link %d", link->link_index);
-
-		core_link_read_dpcd(link,
-				DP_128B132B_SUPPORTED_LINK_RATES,
-				&link->dpcd_caps.dp_128b_132b_supported_link_rates.raw,
-				sizeof(link->dpcd_caps.dp_128b_132b_supported_link_rates.raw));
-		if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR20)
-			link->reported_link_cap.link_rate = LINK_RATE_UHBR20;
-		else if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR13_5)
-			link->reported_link_cap.link_rate = LINK_RATE_UHBR13_5;
-		else if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR10)
-			link->reported_link_cap.link_rate = LINK_RATE_UHBR10;
-		else
-			dm_error("%s: Invalid RX 128b_132b_supported_link_rates\n", __func__);
-		DC_LOG_DP2("128b/132b supported link rates is read at link %d", link->link_index);
-		DC_LOG_DP2("\tmax 128b/132b link rate support is %d.%d GHz",
-				link->reported_link_cap.link_rate / 100,
-				link->reported_link_cap.link_rate % 100);
-
-		core_link_read_dpcd(link,
-				DP_SINK_VIDEO_FALLBACK_FORMATS,
-				&link->dpcd_caps.fallback_formats.raw,
-				sizeof(link->dpcd_caps.fallback_formats.raw));
-		DC_LOG_DP2("sink video fallback format is read at link %d", link->link_index);
-		if (link->dpcd_caps.fallback_formats.bits.dp_1920x1080_60Hz_24bpp_support)
-			DC_LOG_DP2("\t1920x1080@60Hz 24bpp fallback format supported");
-		if (link->dpcd_caps.fallback_formats.bits.dp_1280x720_60Hz_24bpp_support)
-			DC_LOG_DP2("\t1280x720@60Hz 24bpp fallback format supported");
-		if (link->dpcd_caps.fallback_formats.bits.dp_1024x768_60Hz_24bpp_support)
-			DC_LOG_DP2("\t1024x768@60Hz 24bpp fallback format supported");
-		if (link->dpcd_caps.fallback_formats.raw == 0) {
-			DC_LOG_DP2("\tno supported fallback formats, assume 1920x1080@60Hz 24bpp is supported");
-			link->dpcd_caps.fallback_formats.bits.dp_1920x1080_60Hz_24bpp_support = 1;
-		}
-
-		core_link_read_dpcd(link,
-				DP_FEC_CAPABILITY_1,
-				&link->dpcd_caps.fec_cap1.raw,
-				sizeof(link->dpcd_caps.fec_cap1.raw));
-		DC_LOG_DP2("FEC CAPABILITY 1 is read at link %d", link->link_index);
-		if (link->dpcd_caps.fec_cap1.bits.AGGREGATED_ERROR_COUNTERS_CAPABLE)
-			DC_LOG_DP2("\tFEC aggregated error counters are supported");
+	if (test_request.bits.AUDIO_TEST_PATTERN) {
+		dp_test_get_audio_test_data(link, test_request.bits.TEST_AUDIO_DISABLED_VIDEO);
+		test_response.bits.ACK = 1;
 	}
 
-	retrieve_cable_id(link);
-	dpcd_write_cable_id_to_dprx(link);
-
-	/* Connectivity log: detection */
-	CONN_DATA_DETECT(link, dpcd_data, sizeof(dpcd_data), "Rx Caps: ");
+	if (test_request.bits.PHY_TEST_PATTERN) {
+		dp_test_send_phy_test_pattern(link);
+		test_response.bits.ACK = 1;
+	}
 
-	return true;
+	/* send request acknowledgment */
+	if (test_response.bits.ACK)
+		core_link_write_dpcd(
+			link,
+			DP_TEST_RESPONSE,
+			&test_response.raw,
+			sizeof(test_response));
 }
 
-bool dp_overwrite_extended_receiver_cap(struct dc_link *link)
+void dc_link_dp_handle_link_loss(struct dc_link *link)
 {
-	uint8_t dpcd_data[16];
-	uint32_t read_dpcd_retry_cnt = 3;
-	enum dc_status status = DC_ERROR_UNEXPECTED;
-	union dp_downstream_port_present ds_port = { 0 };
-	union down_stream_port_count down_strm_port_count;
-	union edp_configuration_cap edp_config_cap;
-
 	int i;
+	struct pipe_ctx *pipe_ctx;
 
-	for (i = 0; i < read_dpcd_retry_cnt; i++) {
-		status = core_link_read_dpcd(
-				link,
-				DP_DPCD_REV,
-				dpcd_data,
-				sizeof(dpcd_data));
-		if (status == DC_OK)
+	for (i = 0; i < MAX_PIPES; i++) {
+		pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
+		if (pipe_ctx && pipe_ctx->stream && pipe_ctx->stream->link == link)
 			break;
 	}
 
-	link->dpcd_caps.dpcd_rev.raw =
-		dpcd_data[DP_DPCD_REV - DP_DPCD_REV];
-
-	if (dpcd_data[DP_MAX_LANE_COUNT - DP_DPCD_REV] == 0)
-		return false;
-
-	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
-			DP_DPCD_REV];
+	if (pipe_ctx == NULL || pipe_ctx->stream == NULL)
+		return;
 
-	get_active_converter_info(ds_port.byte, link);
+	for (i = 0; i < MAX_PIPES; i++) {
+		pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
+		if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off &&
+				pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe)
+			core_link_disable_stream(pipe_ctx);
+	}
 
-	down_strm_port_count.raw = dpcd_data[DP_DOWN_STREAM_PORT_COUNT -
-			DP_DPCD_REV];
+	for (i = 0; i < MAX_PIPES; i++) {
+		pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
+		if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off
+				&& pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe) {
+			// Always use max settings here for DP 1.4a LL Compliance CTS
+			if (link->is_automated) {
+				pipe_ctx->link_config.dp_link_settings.lane_count =
+						link->verified_link_cap.lane_count;
+				pipe_ctx->link_config.dp_link_settings.link_rate =
+						link->verified_link_cap.link_rate;
+				pipe_ctx->link_config.dp_link_settings.link_spread =
+						link->verified_link_cap.link_spread;
+			}
+			core_link_enable_stream(link->dc->current_state, pipe_ctx);
+		}
+	}
+}
 
-	link->dpcd_caps.allow_invalid_MSA_timing_param =
-		down_strm_port_count.bits.IGNORE_MSA_TIMING_PARAM;
+bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss,
+							bool defer_handling, bool *has_left_work)
+{
+	union hpd_irq_data hpd_irq_dpcd_data = {0};
+	union device_service_irq device_service_clear = {0};
+	enum dc_status result;
+	bool status = false;
 
-	link->dpcd_caps.max_ln_count.raw = dpcd_data[
-		DP_MAX_LANE_COUNT - DP_DPCD_REV];
+	if (out_link_loss)
+		*out_link_loss = false;
 
-	link->dpcd_caps.max_down_spread.raw = dpcd_data[
-		DP_MAX_DOWNSPREAD - DP_DPCD_REV];
+	if (has_left_work)
+		*has_left_work = false;
+	/* For use cases related to down stream connection status change,
+	 * PSR and device auto test, refer to function handle_sst_hpd_irq
+	 * in DAL2.1*/
 
-	link->reported_link_cap.lane_count =
-		link->dpcd_caps.max_ln_count.bits.MAX_LANE_COUNT;
-	link->reported_link_cap.link_rate = dpcd_data[
-		DP_MAX_LINK_RATE - DP_DPCD_REV];
-	link->reported_link_cap.link_spread =
-		link->dpcd_caps.max_down_spread.bits.MAX_DOWN_SPREAD ?
-		LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED;
+	DC_LOG_HW_HPD_IRQ("%s: Got short pulse HPD on link %d\n",
+		__func__, link->link_index);
 
-	edp_config_cap.raw = dpcd_data[
-		DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV];
-	link->dpcd_caps.panel_mode_edp =
-		edp_config_cap.bits.ALT_SCRAMBLER_RESET;
-	link->dpcd_caps.dpcd_display_control_capable =
-		edp_config_cap.bits.DPCD_DISPLAY_CONTROL_CAPABLE;
 
-	return true;
-}
+	 /* All the "handle_hpd_irq_xxx()" methods
+		 * should be called only after
+		 * dal_dpsst_ls_read_hpd_irq_data
+		 * Order of calls is important too
+		 */
+	result = read_hpd_rx_irq_data(link, &hpd_irq_dpcd_data);
+	if (out_hpd_irq_dpcd_data)
+		*out_hpd_irq_dpcd_data = hpd_irq_dpcd_data;
 
-bool detect_dp_sink_caps(struct dc_link *link)
-{
-	return retrieve_link_cap(link);
-}
+	if (result != DC_OK) {
+		DC_LOG_HW_HPD_IRQ("%s: DPCD read failed to obtain irq data\n",
+			__func__);
+		return false;
+	}
 
-enum dc_link_rate linkRateInKHzToLinkRateMultiplier(uint32_t link_rate_in_khz)
-{
-	enum dc_link_rate link_rate;
-	// LinkRate is normally stored as a multiplier of 0.27 Gbps per lane. Do the translation.
-	switch (link_rate_in_khz) {
-	case 1620000:
-		link_rate = LINK_RATE_LOW;		// Rate_1 (RBR)		- 1.62 Gbps/Lane
-		break;
-	case 2160000:
-		link_rate = LINK_RATE_RATE_2;	// Rate_2			- 2.16 Gbps/Lane
-		break;
-	case 2430000:
-		link_rate = LINK_RATE_RATE_3;	// Rate_3			- 2.43 Gbps/Lane
-		break;
-	case 2700000:
-		link_rate = LINK_RATE_HIGH;		// Rate_4 (HBR)		- 2.70 Gbps/Lane
-		break;
-	case 3240000:
-		link_rate = LINK_RATE_RBR2;		// Rate_5 (RBR2)	- 3.24 Gbps/Lane
-		break;
-	case 4320000:
-		link_rate = LINK_RATE_RATE_6;	// Rate_6			- 4.32 Gbps/Lane
-		break;
-	case 5400000:
-		link_rate = LINK_RATE_HIGH2;	// Rate_7 (HBR2)	- 5.40 Gbps/Lane
-		break;
-	case 8100000:
-		link_rate = LINK_RATE_HIGH3;	// Rate_8 (HBR3)	- 8.10 Gbps/Lane
-		break;
-	default:
-		link_rate = LINK_RATE_UNKNOWN;
-		break;
+	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.AUTOMATED_TEST) {
+		// Workaround for DP 1.4a LL Compliance CTS as USB4 has to share encoders unlike DP and USBC
+		link->is_automated = true;
+		device_service_clear.bits.AUTOMATED_TEST = 1;
+		core_link_write_dpcd(
+			link,
+			DP_DEVICE_SERVICE_IRQ_VECTOR,
+			&device_service_clear.raw,
+			sizeof(device_service_clear.raw));
+		device_service_clear.raw = 0;
+		if (defer_handling && has_left_work)
+			*has_left_work = true;
+		else
+			dc_link_dp_handle_automated_test(link);
+		return false;
 	}
-	return link_rate;
-}
 
-void detect_edp_sink_caps(struct dc_link *link)
-{
-	uint8_t supported_link_rates[16];
-	uint32_t entry;
-	uint32_t link_rate_in_khz;
-	enum dc_link_rate link_rate = LINK_RATE_UNKNOWN;
-	uint8_t backlight_adj_cap;
-	uint8_t general_edp_cap;
+	if (!dc_link_dp_allow_hpd_rx_irq(link)) {
+		DC_LOG_HW_HPD_IRQ("%s: skipping HPD handling on %d\n",
+			__func__, link->link_index);
+		return false;
+	}
 
-	retrieve_link_cap(link);
-	link->dpcd_caps.edp_supported_link_rates_count = 0;
-	memset(supported_link_rates, 0, sizeof(supported_link_rates));
+	if (handle_hpd_irq_psr_sink(link))
+		/* PSR-related error was detected and handled */
+		return true;
 
-	/*
-	 * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
-	 * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
+	/* If PSR-related error handled, Main link may be off,
+	 * so do not handle as a normal sink status change interrupt.
 	 */
-	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 &&
-			(link->panel_config.ilr.optimize_edp_link_rate ||
-			link->reported_link_cap.link_rate == LINK_RATE_UNKNOWN)) {
-		// Read DPCD 00010h - 0001Fh 16 bytes at one shot
-		core_link_read_dpcd(link, DP_SUPPORTED_LINK_RATES,
-							supported_link_rates, sizeof(supported_link_rates));
-
-		for (entry = 0; entry < 16; entry += 2) {
-			// DPCD register reports per-lane link rate = 16-bit link rate capability
-			// value X 200 kHz. Need multiplier to find link rate in kHz.
-			link_rate_in_khz = (supported_link_rates[entry+1] * 0x100 +
-										supported_link_rates[entry]) * 200;
-
-			if (link_rate_in_khz != 0) {
-				link_rate = linkRateInKHzToLinkRateMultiplier(link_rate_in_khz);
-				link->dpcd_caps.edp_supported_link_rates[link->dpcd_caps.edp_supported_link_rates_count] = link_rate;
-				link->dpcd_caps.edp_supported_link_rates_count++;
-
-				if (link->reported_link_cap.link_rate < link_rate)
-					link->reported_link_cap.link_rate = link_rate;
-			}
-		}
+
+	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.UP_REQ_MSG_RDY) {
+		if (defer_handling && has_left_work)
+			*has_left_work = true;
+		return true;
 	}
-	core_link_read_dpcd(link, DP_EDP_BACKLIGHT_ADJUSTMENT_CAP,
-						&backlight_adj_cap, sizeof(backlight_adj_cap));
 
-	link->dpcd_caps.dynamic_backlight_capable_edp =
-				(backlight_adj_cap & DP_EDP_DYNAMIC_BACKLIGHT_CAP) ? true:false;
+	/* check if we have MST msg and return since we poll for it */
+	if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.DOWN_REP_MSG_RDY) {
+		if (defer_handling && has_left_work)
+			*has_left_work = true;
+		return false;
+	}
 
-	core_link_read_dpcd(link, DP_EDP_GENERAL_CAP_1,
-						&general_edp_cap, sizeof(general_edp_cap));
+	/* For now we only handle 'Downstream port status' case.
+	 * If we got sink count changed it means
+	 * Downstream port status changed,
+	 * then DM should call DC to do the detection.
+	 * NOTE: Do not handle link loss on eDP since it is internal link*/
+	if ((link->connector_signal != SIGNAL_TYPE_EDP) &&
+		hpd_rx_irq_check_link_loss_status(
+			link,
+			&hpd_irq_dpcd_data)) {
+		/* Connectivity log: link loss */
+		CONN_DATA_LINK_LOSS(link,
+					hpd_irq_dpcd_data.raw,
+					sizeof(hpd_irq_dpcd_data),
+					"Status: ");
 
-	link->dpcd_caps.set_power_state_capable_edp =
-				(general_edp_cap & DP_EDP_SET_POWER_CAP) ? true:false;
+		if (defer_handling && has_left_work)
+			*has_left_work = true;
+		else
+			dc_link_dp_handle_link_loss(link);
 
-	dc_link_set_default_brightness_aux(link);
+		status = false;
+		if (out_link_loss)
+			*out_link_loss = true;
 
-	core_link_read_dpcd(link, DP_EDP_DPCD_REV,
-		&link->dpcd_caps.edp_rev,
-		sizeof(link->dpcd_caps.edp_rev));
-	/*
-	 * PSR is only valid for eDP v1.3 or higher.
-	 */
-	if (link->dpcd_caps.edp_rev >= DP_EDP_13) {
-		core_link_read_dpcd(link, DP_PSR_SUPPORT,
-			&link->dpcd_caps.psr_info.psr_version,
-			sizeof(link->dpcd_caps.psr_info.psr_version));
-		if (link->dpcd_caps.sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8)
-			core_link_read_dpcd(link, DP_FORCE_PSRSU_CAPABILITY,
-						&link->dpcd_caps.psr_info.force_psrsu_cap,
-						sizeof(link->dpcd_caps.psr_info.force_psrsu_cap));
-		core_link_read_dpcd(link, DP_PSR_CAPS,
-			&link->dpcd_caps.psr_info.psr_dpcd_caps.raw,
-			sizeof(link->dpcd_caps.psr_info.psr_dpcd_caps.raw));
-		if (link->dpcd_caps.psr_info.psr_dpcd_caps.bits.Y_COORDINATE_REQUIRED) {
-			core_link_read_dpcd(link, DP_PSR2_SU_Y_GRANULARITY,
-				&link->dpcd_caps.psr_info.psr2_su_y_granularity_cap,
-				sizeof(link->dpcd_caps.psr_info.psr2_su_y_granularity_cap));
-		}
+		dp_trace_link_loss_increment(link);
 	}
 
-	/*
-	 * ALPM is only valid for eDP v1.4 or higher.
+	if (link->type == dc_connection_sst_branch &&
+		hpd_irq_dpcd_data.bytes.sink_cnt.bits.SINK_COUNT
+			!= link->dpcd_sink_count)
+		status = true;
+
+	/* reasons for HPD RX:
+	 * 1. Link Loss - ie Re-train the Link
+	 * 2. MST sideband message
+	 * 3. Automated Test - ie. Internal Commit
+	 * 4. CP (copy protection) - (not interesting for DM???)
+	 * 5. DRR
+	 * 6. Downstream Port status changed
+	 * -ie. Detect - this the only one
+	 * which is interesting for DM because
+	 * it must call dc_link_detect.
 	 */
-	if (link->dpcd_caps.dpcd_rev.raw >= DP_EDP_14)
-		core_link_read_dpcd(link, DP_RECEIVER_ALPM_CAP,
-			&link->dpcd_caps.alpm_caps.raw,
-			sizeof(link->dpcd_caps.alpm_caps.raw));
+	return status;
 }
 
 static bool is_dp_phy_pattern(enum dp_test_pattern test_pattern)
@@ -3597,88 +1652,6 @@ void dp_set_fec_enable(struct dc_link *link, bool enable)
 	}
 }
 
-void dpcd_set_source_specific_data(struct dc_link *link)
-{
-	if (!link->dc->vendor_signature.is_valid) {
-		enum dc_status result_write_min_hblank = DC_NOT_SUPPORTED;
-		struct dpcd_amd_signature amd_signature = {0};
-		struct dpcd_amd_device_id amd_device_id = {0};
-
-		amd_device_id.device_id_byte1 =
-				(uint8_t)(link->ctx->asic_id.chip_id);
-		amd_device_id.device_id_byte2 =
-				(uint8_t)(link->ctx->asic_id.chip_id >> 8);
-		amd_device_id.dce_version =
-				(uint8_t)(link->ctx->dce_version);
-		amd_device_id.dal_version_byte1 = 0x0; // needed? where to get?
-		amd_device_id.dal_version_byte2 = 0x0; // needed? where to get?
-
-		core_link_read_dpcd(link, DP_SOURCE_OUI,
-				(uint8_t *)(&amd_signature),
-				sizeof(amd_signature));
-
-		if (!((amd_signature.AMD_IEEE_TxSignature_byte1 == 0x0) &&
-			(amd_signature.AMD_IEEE_TxSignature_byte2 == 0x0) &&
-			(amd_signature.AMD_IEEE_TxSignature_byte3 == 0x1A))) {
-
-			amd_signature.AMD_IEEE_TxSignature_byte1 = 0x0;
-			amd_signature.AMD_IEEE_TxSignature_byte2 = 0x0;
-			amd_signature.AMD_IEEE_TxSignature_byte3 = 0x1A;
-
-			core_link_write_dpcd(link, DP_SOURCE_OUI,
-				(uint8_t *)(&amd_signature),
-				sizeof(amd_signature));
-		}
-
-		core_link_write_dpcd(link, DP_SOURCE_OUI+0x03,
-				(uint8_t *)(&amd_device_id),
-				sizeof(amd_device_id));
-
-		if (link->ctx->dce_version >= DCN_VERSION_2_0 &&
-			link->dc->caps.min_horizontal_blanking_period != 0) {
-
-			uint8_t hblank_size = (uint8_t)link->dc->caps.min_horizontal_blanking_period;
-
-			result_write_min_hblank = core_link_write_dpcd(link,
-				DP_SOURCE_MINIMUM_HBLANK_SUPPORTED, (uint8_t *)(&hblank_size),
-				sizeof(hblank_size));
-		}
-		DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION,
-							WPP_BIT_FLAG_DC_DETECTION_DP_CAPS,
-							"result=%u link_index=%u enum dce_version=%d DPCD=0x%04X min_hblank=%u branch_dev_id=0x%x branch_dev_name='%c%c%c%c%c%c'",
-							result_write_min_hblank,
-							link->link_index,
-							link->ctx->dce_version,
-							DP_SOURCE_MINIMUM_HBLANK_SUPPORTED,
-							link->dc->caps.min_horizontal_blanking_period,
-							link->dpcd_caps.branch_dev_id,
-							link->dpcd_caps.branch_dev_name[0],
-							link->dpcd_caps.branch_dev_name[1],
-							link->dpcd_caps.branch_dev_name[2],
-							link->dpcd_caps.branch_dev_name[3],
-							link->dpcd_caps.branch_dev_name[4],
-							link->dpcd_caps.branch_dev_name[5]);
-	} else {
-		core_link_write_dpcd(link, DP_SOURCE_OUI,
-				link->dc->vendor_signature.data.raw,
-				sizeof(link->dc->vendor_signature.data.raw));
-	}
-}
-
-void dpcd_write_cable_id_to_dprx(struct dc_link *link)
-{
-	if (!link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED ||
-			link->dpcd_caps.cable_id.raw == 0 ||
-			link->dprx_states.cable_id_written)
-		return;
-
-	core_link_write_dpcd(link, DP_CABLE_ATTRIBUTES_UPDATED_BY_DPTX,
-			&link->dpcd_caps.cable_id.raw,
-			sizeof(link->dpcd_caps.cable_id.raw));
-
-	link->dprx_states.cable_id_written = 1;
-}
-
 bool dc_link_set_backlight_level_nits(struct dc_link *link,
 		bool isHDR,
 		uint32_t backlight_millinits,
@@ -3824,7 +1797,7 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin
 	req_bw = dc_bandwidth_in_kbps_from_timing(crtc_timing);
 
 	if (!crtc_timing->flags.DSC)
-		decide_edp_link_settings(link, &link_setting, req_bw);
+		dc_link_decide_edp_link_settings(link, &link_setting, req_bw);
 	else
 		decide_edp_link_settings_with_dsc(link, &link_setting, req_bw, LINK_RATE_UNKNOWN);
 
@@ -3839,36 +1812,6 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin
 }
 
 
-enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings)
-{
-	if ((link_settings->link_rate >= LINK_RATE_LOW) &&
-			(link_settings->link_rate <= LINK_RATE_HIGH3))
-		return DP_8b_10b_ENCODING;
-	else if ((link_settings->link_rate >= LINK_RATE_UHBR10) &&
-			(link_settings->link_rate <= LINK_RATE_UHBR20))
-		return DP_128b_132b_ENCODING;
-	return DP_UNKNOWN_ENCODING;
-}
-
-enum dp_link_encoding dc_link_dp_mst_decide_link_encoding_format(const struct dc_link *link)
-{
-	struct dc_link_settings link_settings = {0};
-
-	if (!dc_is_dp_signal(link->connector_signal))
-		return DP_UNKNOWN_ENCODING;
-
-	if (link->preferred_link_setting.lane_count !=
-			LANE_COUNT_UNKNOWN &&
-			link->preferred_link_setting.link_rate !=
-					LINK_RATE_UNKNOWN) {
-		link_settings = link->preferred_link_setting;
-	} else {
-		decide_mst_link_settings(link, &link_settings);
-	}
-
-	return dp_get_link_encoding_format(&link_settings);
-}
-
 // TODO - DP2.0 Link: Fix get_lane_status to handle LTTPR offset (SST and MST)
 static void get_lane_status(
 	struct dc_link *link,
@@ -4066,15 +2009,6 @@ struct fixed31_32 calculate_sst_avg_time_slots_per_mtp(
 	return avg_time_slots_per_mtp;
 }
 
-bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx)
-{
-	/* If this assert is hit then we have a link encoder dynamic management issue */
-	ASSERT(pipe_ctx->stream_res.hpo_dp_stream_enc ? pipe_ctx->link_res.hpo_dp_link_enc != NULL : true);
-	return (pipe_ctx->stream_res.hpo_dp_stream_enc &&
-			pipe_ctx->link_res.hpo_dp_link_enc &&
-			dc_is_dp_signal(pipe_ctx->stream->signal));
-}
-
 void edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd)
 {
 	if (link->connector_signal != SIGNAL_TYPE_EDP)
@@ -4282,7 +2216,7 @@ void dp_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 
 		/* Enable DSC in encoder */
 		if (dc_is_dp_signal(stream->signal) && !IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)
-				&& !is_dp_128b_132b_signal(pipe_ctx)) {
+				&& !link_is_dp_128b_132b_signal(pipe_ctx)) {
 			DC_LOG_DSC("Setting stream encoder DSC config for engine %d:", (int)pipe_ctx->stream_res.stream_enc->id);
 			dsc_optc_config_log(dsc, &dsc_optc_cfg);
 			pipe_ctx->stream_res.stream_enc->funcs->dp_set_dsc_config(pipe_ctx->stream_res.stream_enc,
@@ -4308,7 +2242,7 @@ void dp_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 
 		/* disable DSC in stream encoder */
 		if (dc_is_dp_signal(stream->signal)) {
-			if (is_dp_128b_132b_signal(pipe_ctx))
+			if (link_is_dp_128b_132b_signal(pipe_ctx))
 				pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(
 										pipe_ctx->stream_res.hpo_dp_stream_enc,
 										false,
@@ -4390,7 +2324,7 @@ bool dp_set_dsc_pps_sdp(struct pipe_ctx *pipe_ctx, bool enable, bool immediate_u
 		memcpy(&stream->dsc_packed_pps[0], &dsc_packed_pps[0], sizeof(stream->dsc_packed_pps));
 		if (dc_is_dp_signal(stream->signal)) {
 			DC_LOG_DSC("Setting stream encoder DSC PPS SDP for engine %d\n", (int)pipe_ctx->stream_res.stream_enc->id);
-			if (is_dp_128b_132b_signal(pipe_ctx))
+			if (link_is_dp_128b_132b_signal(pipe_ctx))
 				pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(
 										pipe_ctx->stream_res.hpo_dp_stream_enc,
 										true,
@@ -4407,7 +2341,7 @@ bool dp_set_dsc_pps_sdp(struct pipe_ctx *pipe_ctx, bool enable, bool immediate_u
 		/* disable DSC PPS in stream encoder */
 		memset(&stream->dsc_packed_pps[0], 0, sizeof(stream->dsc_packed_pps));
 		if (dc_is_dp_signal(stream->signal)) {
-			if (is_dp_128b_132b_signal(pipe_ctx))
+			if (link_is_dp_128b_132b_signal(pipe_ctx))
 				pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(
 										pipe_ctx->stream_res.hpo_dp_stream_enc,
 										false,
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
index 049e755792e6..fa2ba3fc683b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
@@ -25,6 +25,7 @@
 #include "link_enc_cfg.h"
 #include "resource.h"
 #include "dc_link_dp.h"
+#include "link.h"
 
 #define DC_LOGGER dc->ctx->logger
 
@@ -48,7 +49,7 @@ static bool is_dig_link_enc_stream(struct dc_stream_state *stream)
 					/* DIGs do not support DP2.0 streams with 128b/132b encoding. */
 					struct dc_link_settings link_settings = {0};
 
-					decide_link_settings(stream, &link_settings);
+					link_decide_link_settings(stream, &link_settings);
 					if ((link_settings.link_rate >= LINK_RATE_LOW) &&
 							link_settings.link_rate <= LINK_RATE_HIGH3) {
 						is_dig_stream = true;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 06b5f49e0954..efbfb880f390 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -41,6 +41,7 @@
 #include "dpcd_defs.h"
 #include "link_enc_cfg.h"
 #include "dc_link_dp.h"
+#include "link.h"
 #include "virtual/virtual_link_hwss.h"
 #include "link/link_hwss_dio.h"
 #include "link/link_hwss_dpia.h"
@@ -2213,7 +2214,7 @@ enum dc_status dc_remove_stream_from_ctx(
 			del_pipe->stream_res.stream_enc,
 			false);
 
-	if (is_dp_128b_132b_signal(del_pipe)) {
+	if (link_is_dp_128b_132b_signal(del_pipe)) {
 		update_hpo_dp_stream_engine_usage(
 			&new_ctx->res_ctx, dc->res_pool,
 			del_pipe->stream_res.hpo_dp_stream_enc,
@@ -2513,9 +2514,9 @@ enum dc_status resource_map_pool_resources(
 	 * and link settings
 	 */
 	if (dc_is_dp_signal(stream->signal)) {
-		if (!decide_link_settings(stream, &pipe_ctx->link_config.dp_link_settings))
+		if (!link_decide_link_settings(stream, &pipe_ctx->link_config.dp_link_settings))
 			return DC_FAIL_DP_LINK_BANDWIDTH;
-		if (dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings) == DP_128b_132b_ENCODING) {
+		if (link_dp_get_encoding_format(&pipe_ctx->link_config.dp_link_settings) == DP_128b_132b_ENCODING) {
 			pipe_ctx->stream_res.hpo_dp_stream_enc =
 					find_first_free_match_hpo_dp_stream_enc_for_link(
 							&context->res_ctx, pool, stream);
@@ -3763,7 +3764,7 @@ bool get_temp_dp_link_res(struct dc_link *link,
 
 	memset(link_res, 0, sizeof(*link_res));
 
-	if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
+	if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
 		link_res->hpo_dp_link_enc = get_temp_hpo_dp_link_enc(res_ctx,
 				dc->res_pool, link);
 		if (!link_res->hpo_dp_link_enc)
@@ -3995,7 +3996,7 @@ enum dc_status update_dp_encoder_resources_for_test_harness(const struct dc *dc,
 		struct dc_state *context,
 		struct pipe_ctx *pipe_ctx)
 {
-	if (dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings) == DP_128b_132b_ENCODING) {
+	if (link_dp_get_encoding_format(&pipe_ctx->link_config.dp_link_settings) == DP_128b_132b_ENCODING) {
 		if (pipe_ctx->stream_res.hpo_dp_stream_enc == NULL) {
 			pipe_ctx->stream_res.hpo_dp_stream_enc =
 					find_first_free_match_hpo_dp_stream_enc_for_link(
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index b89093e14195..63fe60dd3ea3 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -584,5 +584,7 @@ int dc_link_aux_transfer_raw(struct ddc_service *ddc,
 enum lttpr_mode dc_link_decide_lttpr_mode(struct dc_link *link,
 		struct dc_link_settings *link_setting);
 void dc_link_dp_receiver_power_ctrl(struct dc_link *link, bool on);
-
+bool dc_link_decide_edp_link_settings(struct dc_link *link,
+		struct dc_link_settings *link_setting,
+		uint32_t req_bw);
 #endif /* DC_LINK_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 833a1c37cbe4..94be3ffcdea0 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1154,7 +1154,7 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 			pipe_ctx->stream_res.stream_enc);
 	}
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->stop_dp_info_packets(
 					pipe_ctx->stream_res.hpo_dp_stream_enc);
 	} else if (dc_is_dp_signal(pipe_ctx->stream->signal))
@@ -1165,7 +1165,7 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 
 	link_hwss->reset_stream_encoder(pipe_ctx);
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		dto_params.otg_inst = tg->inst;
 		dto_params.timing = &pipe_ctx->stream->timing;
 		dp_hpo_inst = pipe_ctx->stream_res.hpo_dp_stream_enc->inst;
@@ -1174,7 +1174,7 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 		dccg->funcs->set_dpstreamclk(dccg, REFCLK, tg->inst, dp_hpo_inst);
 	}
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		/* TODO: This looks like a bug to me as we are disabling HPO IO when
 		 * we are just disabling a single HPO stream. Shouldn't we disable HPO
 		 * HW control only when HPOs for all streams are disabled?
@@ -1216,7 +1216,7 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
 		link->dc->hwss.set_abm_immediate_disable(pipe_ctx);
 	}
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		/* TODO - DP2.0 HW: Set ODM mode in dp hpo encoder here */
 		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_blank(
 				pipe_ctx->stream_res.hpo_dp_stream_enc);
@@ -1421,7 +1421,7 @@ static enum dc_status dce110_enable_stream_timing(
 		if (false == pipe_ctx->clock_source->funcs->program_pix_clk(
 				pipe_ctx->clock_source,
 				&pipe_ctx->stream_res.pix_clk_params,
-				dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings),
+				link_dp_get_encoding_format(&pipe_ctx->link_config.dp_link_settings),
 				&pipe_ctx->pll_settings)) {
 			BREAK_TO_DEBUGGER();
 			return DC_ERROR_UNEXPECTED;
@@ -1525,7 +1525,7 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 	 * To do so, move calling function enable_stream_timing to only be done AFTER calling
 	 * function core_link_enable_stream
 	 */
-	if (!(hws->wa.dp_hpo_and_otg_sequence && is_dp_128b_132b_signal(pipe_ctx)))
+	if (!(hws->wa.dp_hpo_and_otg_sequence && link_is_dp_128b_132b_signal(pipe_ctx)))
 		/*  */
 		/* Do not touch stream timing on seamless boot optimization. */
 		if (!pipe_ctx->stream->apply_seamless_boot_optimization)
@@ -1567,7 +1567,7 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 	 * To do so, move calling function enable_stream_timing to only be done AFTER calling
 	 * function core_link_enable_stream
 	 */
-	if (hws->wa.dp_hpo_and_otg_sequence && is_dp_128b_132b_signal(pipe_ctx)) {
+	if (hws->wa.dp_hpo_and_otg_sequence && link_is_dp_128b_132b_signal(pipe_ctx)) {
 		if (!pipe_ctx->stream->apply_seamless_boot_optimization)
 			hws->funcs.enable_stream_timing(pipe_ctx, context, dc);
 	}
@@ -3047,13 +3047,13 @@ void dce110_enable_dp_link_output(
 				pipes[i].clock_source->funcs->program_pix_clk(
 						pipes[i].clock_source,
 						&pipes[i].stream_res.pix_clk_params,
-						dp_get_link_encoding_format(link_settings),
+						link_dp_get_encoding_format(link_settings),
 						&pipes[i].pll_settings);
 			}
 		}
 	}
 
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING) {
+	if (link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING) {
 		if (dc->clk_mgr->funcs->notify_link_rate_change)
 			dc->clk_mgr->funcs->notify_link_rate_change(dc->clk_mgr, link);
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index c1d4e66b413f..0a0c930c1626 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -57,6 +57,7 @@
 #include "dc_trace.h"
 #include "dce/dmub_outbox.h"
 #include "inc/dc_link_dp.h"
+#include "link.h"
 
 #define DC_LOGGER_INIT(logger)
 
@@ -920,7 +921,7 @@ enum dc_status dcn10_enable_stream_timing(
 	if (false == pipe_ctx->clock_source->funcs->program_pix_clk(
 			pipe_ctx->clock_source,
 			&pipe_ctx->stream_res.pix_clk_params,
-			dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings),
+			link_dp_get_encoding_format(&pipe_ctx->link_config.dp_link_settings),
 			&pipe_ctx->pll_settings)) {
 		BREAK_TO_DEBUGGER();
 		return DC_ERROR_UNEXPECTED;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index c2066a5057e8..6bfa16d9135f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -55,6 +55,7 @@
 #include "dpcd_defs.h"
 #include "inc/link_enc_cfg.h"
 #include "link_hwss.h"
+#include "link.h"
 
 #define DC_LOGGER_INIT(logger)
 
@@ -711,7 +712,7 @@ enum dc_status dcn20_enable_stream_timing(
 	if (false == pipe_ctx->clock_source->funcs->program_pix_clk(
 			pipe_ctx->clock_source,
 			&pipe_ctx->stream_res.pix_clk_params,
-			dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings),
+			link_dp_get_encoding_format(&pipe_ctx->link_config.dp_link_settings),
 			&pipe_ctx->pll_settings)) {
 		BREAK_TO_DEBUGGER();
 		return DC_ERROR_UNEXPECTED;
@@ -2382,7 +2383,7 @@ void dcn20_unblank_stream(struct pipe_ctx *pipe_ctx,
 
 	params.link_settings.link_rate = link_settings->link_rate;
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		/* TODO - DP2.0 HW: Set ODM mode in dp hpo encoder here */
 		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_unblank(
 				pipe_ctx->stream_res.hpo_dp_stream_enc,
@@ -2690,12 +2691,12 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 	unsigned int k1_div = PIXEL_RATE_DIV_NA;
 	unsigned int k2_div = PIXEL_RATE_DIV_NA;
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		if (dc->hwseq->funcs.setup_hpo_hw_control)
 			dc->hwseq->funcs.setup_hpo_hw_control(dc->hwseq, true);
 	}
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		dp_hpo_inst = pipe_ctx->stream_res.hpo_dp_stream_enc->inst;
 		dccg->funcs->set_dpstreamclk(dccg, DTBCLK0, tg->inst, dp_hpo_inst);
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
index 3b354f0db2a5..0e1949d9ea58 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -46,6 +46,7 @@
 #include "dpcd_defs.h"
 #include "dce/dmub_outbox.h"
 #include "dc_link_dp.h"
+#include "link.h"
 #include "dcn10/dcn10_hw_sequencer.h"
 #include "inc/link_enc_cfg.h"
 #include "dcn30/dcn30_vpg.h"
@@ -414,7 +415,12 @@ void dcn31_update_info_frame(struct pipe_ctx *pipe_ctx)
 		pipe_ctx->stream_res.stream_enc->funcs->update_hdmi_info_packets(
 			pipe_ctx->stream_res.stream_enc,
 			&pipe_ctx->stream_res.encoder_info_frame);
-	else {
+	else if (link_is_dp_128b_132b_signal(pipe_ctx)) {
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->update_dp_info_packets(
+				pipe_ctx->stream_res.hpo_dp_stream_enc,
+				&pipe_ctx->stream_res.encoder_info_frame);
+		return;
+	} else {
 		pipe_ctx->stream_res.stream_enc->funcs->update_dp_info_packets(
 			pipe_ctx->stream_res.stream_enc,
 			&pipe_ctx->stream_res.encoder_info_frame);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
index edc2c08939b0..7980462e3abe 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
@@ -47,6 +47,7 @@
 #include "dpcd_defs.h"
 #include "dce/dmub_outbox.h"
 #include "dc_link_dp.h"
+#include "link.h"
 #include "inc/dc_link_dp.h"
 #include "dcn10/dcn10_hw_sequencer.h"
 #include "inc/link_enc_cfg.h"
@@ -347,7 +348,7 @@ unsigned int dcn314_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsig
 	two_pix_per_container = optc2_is_two_pixels_per_containter(&stream->timing);
 	odm_combine_factor = get_odm_config(pipe_ctx, NULL);
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		*k1_div = PIXEL_RATE_DIV_BY_1;
 		*k2_div = PIXEL_RATE_DIV_BY_1;
 	} else if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal) || dc_is_dvi_signal(pipe_ctx->stream->signal)) {
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
index 07362c66f023..478412220360 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
@@ -50,6 +50,7 @@
 #include "dmub_subvp_state.h"
 #include "dce/dmub_hw_lock_mgr.h"
 #include "dcn32_resource.h"
+#include "link.h"
 #include "dc_link_dp.h"
 #include "dmub/inc/dmub_subvp_state.h"
 
@@ -1056,7 +1057,7 @@ unsigned int dcn32_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsign
 	two_pix_per_container = optc2_is_two_pixels_per_containter(&stream->timing);
 	odm_combine_factor = get_odm_config(pipe_ctx, NULL);
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		*k1_div = PIXEL_RATE_DIV_BY_1;
 		*k2_div = PIXEL_RATE_DIV_BY_1;
 	} else if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal) || dc_is_dvi_signal(pipe_ctx->stream->signal)) {
@@ -1120,7 +1121,7 @@ void dcn32_unblank_stream(struct pipe_ctx *pipe_ctx,
 
 	params.link_settings.link_rate = link_settings->link_rate;
 
-	if (is_dp_128b_132b_signal(pipe_ctx)) {
+	if (link_is_dp_128b_132b_signal(pipe_ctx)) {
 		/* TODO - DP2.0 HW: Set ODM mode in dp hpo encoder here */
 		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_unblank(
 				pipe_ctx->stream_res.hpo_dp_stream_enc,
@@ -1147,7 +1148,7 @@ bool dcn32_is_dp_dig_pixel_rate_div_policy(struct pipe_ctx *pipe_ctx)
 	if (!is_h_timing_divisible_by_2(pipe_ctx->stream))
 		return false;
 
-	if (dc_is_dp_signal(pipe_ctx->stream->signal) && !is_dp_128b_132b_signal(pipe_ctx) &&
+	if (dc_is_dp_signal(pipe_ctx->stream->signal) && !link_is_dp_128b_132b_signal(pipe_ctx) &&
 		dc->debug.enable_dp_dig_pixel_rate_div_policy)
 		return true;
 	return false;
@@ -1181,7 +1182,7 @@ static void apply_symclk_on_tx_off_wa(struct dc_link *link)
 				pipe_ctx->clock_source->funcs->program_pix_clk(
 						pipe_ctx->clock_source,
 						&pipe_ctx->stream_res.pix_clk_params,
-						dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings),
+						link_dp_get_encoding_format(&pipe_ctx->link_config.dp_link_settings),
 						&pipe_ctx->pll_settings);
 				link->phy_state.symclk_state = SYMCLK_ON_TX_OFF;
 				break;
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
index c26da3bb2892..d2b89c50be2a 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
@@ -32,6 +32,7 @@
 #include "dcn21/dcn21_resource.h"
 #include "clk_mgr/dcn21/rn_clk_mgr.h"
 
+#include "link.h"
 #include "dcn20_fpu.h"
 
 #define DC_LOGGER_INIT(logger)
@@ -938,7 +939,7 @@ static bool is_dtbclk_required(struct dc *dc, struct dc_state *context)
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		if (!context->res_ctx.pipe_ctx[i].stream)
 			continue;
-		if (is_dp_128b_132b_signal(&context->res_ctx.pipe_ctx[i]))
+		if (link_is_dp_128b_132b_signal(&context->res_ctx.pipe_ctx[i]))
 			return true;
 	}
 	return false;
@@ -1302,7 +1303,7 @@ int dcn20_populate_dml_pipes_from_context(
 		case SIGNAL_TYPE_DISPLAY_PORT_MST:
 		case SIGNAL_TYPE_DISPLAY_PORT:
 			pipes[pipe_cnt].dout.output_type = dm_dp;
-			if (is_dp_128b_132b_signal(&res_ctx->pipe_ctx[i]))
+			if (link_is_dp_128b_132b_signal(&res_ctx->pipe_ctx[i]))
 				pipes[pipe_cnt].dout.output_type = dm_dp2p0;
 			break;
 		case SIGNAL_TYPE_EDP:
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index f2597c966510..2e22600ad5df 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -31,6 +31,7 @@
 // We need this includes for WATERMARKS_* defines
 #include "clk_mgr/dcn32/dcn32_smu13_driver_if.h"
 #include "dcn30/dcn30_resource.h"
+#include "link.h"
 
 #define DC_LOGGER_INIT(logger)
 
@@ -1263,7 +1264,7 @@ static bool is_dtbclk_required(struct dc *dc, struct dc_state *context)
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		if (!context->res_ctx.pipe_ctx[i].stream)
 			continue;
-		if (is_dp_128b_132b_signal(&context->res_ctx.pipe_ctx[i]))
+		if (link_is_dp_128b_132b_signal(&context->res_ctx.pipe_ctx[i]))
 			return true;
 	}
 	return false;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
index 31159a86b28c..52e1aad1fce8 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
@@ -28,8 +28,6 @@
 
 #define LINK_TRAINING_ATTEMPTS 4
 #define LINK_TRAINING_RETRY_DELAY 50 /* ms */
-#define LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD 3200 /*us*/
-#define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 552 /*us*/
 #define MAX_MTP_SLOT_COUNT 64
 #define TRAINING_AUX_RD_INTERVAL 100 //us
 #define LINK_AUX_WAKE_TIMEOUT_MS 1500 // Timeout when trying to wake unresponsive DPRX.
@@ -49,7 +47,6 @@ enum {
 	PEAK_FACTOR_X1000 = 1006,
 };
 
-struct dc_link_settings dp_get_max_link_cap(struct dc_link *link);
 
 bool dp_verify_link_cap_with_retries(
 	struct dc_link *link,
@@ -60,26 +57,11 @@ bool dp_validate_mode_timing(
 	struct dc_link *link,
 	const struct dc_crtc_timing *timing);
 
-bool decide_edp_link_settings(struct dc_link *link,
-		struct dc_link_settings *link_setting,
-		uint32_t req_bw);
-
-bool decide_link_settings(
-	struct dc_stream_state *stream,
-	struct dc_link_settings *link_setting);
-
 bool hpd_rx_irq_check_link_loss_status(struct dc_link *link,
 				       union hpd_irq_data *hpd_irq_dpcd_data);
-
-bool is_mst_supported(struct dc_link *link);
-
-bool detect_dp_sink_caps(struct dc_link *link);
-
-void detect_edp_sink_caps(struct dc_link *link);
-
-bool is_dp_active_dongle(const struct dc_link *link);
-
-bool is_dp_branch_device(const struct dc_link *link);
+enum dc_status read_hpd_rx_irq_data(
+	struct dc_link *link,
+	union hpd_irq_data *irq_data);
 
 bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timing *crtc_timing);
 
@@ -88,10 +70,6 @@ void dp_enable_mst_on_sink(struct dc_link *link, bool enable);
 enum dp_panel_mode dp_get_panel_mode(struct dc_link *link);
 void dp_set_panel_mode(struct dc_link *link, enum dp_panel_mode panel_mode);
 
-bool dp_overwrite_extended_receiver_cap(struct dc_link *link);
-
-void dpcd_set_source_specific_data(struct dc_link *link);
-
 void dpcd_write_cable_id_to_dprx(struct dc_link *link);
 
 enum dc_status dp_set_fec_ready(struct dc_link *link, const struct link_resource *link_res, bool ready);
@@ -108,12 +86,6 @@ void dp_decide_training_settings(
 	const struct dc_link_settings *link_setting,
 	struct link_training_settings *lt_settings);
 
-/* Convert PHY repeater count read from DPCD uint8_t. */
-uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count);
-
-enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings);
-enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link);
-bool dp_is_lttpr_present(struct dc_link *link);
 bool dpcd_write_128b_132b_sst_payload_allocation_table(
 		const struct dc_stream_state *stream,
 		struct dc_link *link,
@@ -132,7 +104,6 @@ void disable_dp_hpo_output(struct dc_link *link,
 		const struct link_resource *link_res,
 		enum signal_type signal);
 void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable);
-bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
 void edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd);
 void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
 void edp_add_delay_for_T9(struct dc_link *link);
@@ -143,10 +114,4 @@ void dp_retrain_link_dp_test(struct dc_link *link,
 		struct dc_link_settings *link_setting,
 		bool skip_video_pattern);
 
-bool decide_fallback_link_setting(
-		struct dc_link *link,
-		struct dc_link_settings *max,
-		struct dc_link_settings *cur,
-		enum link_training_result training_result);
-
 #endif /* __DC_LINK_DP_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link.h b/drivers/gpu/drm/amd/display/dc/inc/link.h
index 8774d3a39f05..3945522fb798 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/link.h
@@ -80,5 +80,13 @@ bool link_aux_transfer_with_retries_no_mutex(struct ddc_service *ddc,
 
 uint32_t link_get_aux_defer_delay(struct ddc_service *ddc);
 
+bool link_is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
+
+enum dp_link_encoding link_dp_get_encoding_format(
+		const struct dc_link_settings *link_settings);
+
+bool link_decide_link_settings(
+	struct dc_stream_state *stream,
+	struct dc_link_settings *link_setting);
 
 #endif /* __DC_LINK_HPD_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index c2d9b3d29994..4dee0e6248b1 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -26,7 +26,8 @@
 LINK = link_hwss_dio.o link_hwss_dpia.o link_hwss_hpo_dp.o link_dp_trace.o \
 link_hpd.o link_ddc.o link_dpcd.o link_dp_dpia.o link_dp_training.o \
 link_dp_training_8b_10b.o link_dp_training_128b_132b.o link_dp_training_dpia.o \
-link_dp_training_auxless.o link_dp_training_fixed_vs_pe_retimer.o link_dp_phy.o
+link_dp_training_auxless.o link_dp_training_fixed_vs_pe_retimer.o link_dp_phy.o \
+link_dp_capability.o
 
 AMD_DAL_LINK = $(addprefix $(AMDDALPATH)/dc/link/,$(LINK))
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_ddc.h b/drivers/gpu/drm/amd/display/dc/link/link_ddc.h
index 71a342d0395e..86e9d2e886d6 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_ddc.h
+++ b/drivers/gpu/drm/amd/display/dc/link/link_ddc.h
@@ -32,6 +32,7 @@
 #define I2C_OVER_AUX_DEFER_WA_DELAY 70
 #define DPVGA_DONGLE_AUX_DEFER_WA_DELAY 40
 #define I2C_OVER_AUX_DEFER_WA_DELAY_1MS 1
+#define LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD 3200 /*us*/
 
 #define EDID_SEGMENT_SIZE 256
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_capability.c
new file mode 100644
index 000000000000..088f4291bfbf
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_capability.c
@@ -0,0 +1,2169 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements dp specific link capability retrieval sequence. It is
+ * responsible for retrieving, parsing, overriding, deciding capability obtained
+ * from dp link. Link capability consists of encoders, DPRXs, cables, retimers,
+ * usb and all other possible backend capabilities. Other components should
+ * include this header file in order to access link capability. Accessing link
+ * capability by dereferencing dc_link outside dp_link_capability is not a
+ * recommended method as it makes the component dependent on the underlying data
+ * structure used to represent link capability instead of function interfaces.
+ */
+
+#include "link_dp_capability.h"
+#include "link_ddc.h"
+#include "link_dpcd.h"
+#include "link_dp_dpia.h"
+#include "link_dp_phy.h"
+#include "link_dp_trace.h"
+#include "link_dp_training.h"
+#include "atomfirmware.h"
+#include "resource.h"
+#include "link_enc_cfg.h"
+#include "dc_link_dp.h"
+#include "dc_dmub_srv.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+#define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
+
+#ifndef MAX
+#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#endif
+#ifndef MIN
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
+
+#define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 552 /*us*/
+
+struct dp_lt_fallback_entry {
+	enum dc_lane_count lane_count;
+	enum dc_link_rate link_rate;
+};
+
+static const struct dp_lt_fallback_entry dp_lt_fallbacks[] = {
+		/* This link training fallback array is ordered by
+		 * link bandwidth from highest to lowest.
+		 * DP specs makes it a normative policy to always
+		 * choose the next highest link bandwidth during
+		 * link training fallback.
+		 */
+		{LANE_COUNT_FOUR, LINK_RATE_UHBR20},
+		{LANE_COUNT_FOUR, LINK_RATE_UHBR13_5},
+		{LANE_COUNT_TWO, LINK_RATE_UHBR20},
+		{LANE_COUNT_FOUR, LINK_RATE_UHBR10},
+		{LANE_COUNT_TWO, LINK_RATE_UHBR13_5},
+		{LANE_COUNT_FOUR, LINK_RATE_HIGH3},
+		{LANE_COUNT_ONE, LINK_RATE_UHBR20},
+		{LANE_COUNT_TWO, LINK_RATE_UHBR10},
+		{LANE_COUNT_FOUR, LINK_RATE_HIGH2},
+		{LANE_COUNT_ONE, LINK_RATE_UHBR13_5},
+		{LANE_COUNT_TWO, LINK_RATE_HIGH3},
+		{LANE_COUNT_ONE, LINK_RATE_UHBR10},
+		{LANE_COUNT_TWO, LINK_RATE_HIGH2},
+		{LANE_COUNT_FOUR, LINK_RATE_HIGH},
+		{LANE_COUNT_ONE, LINK_RATE_HIGH3},
+		{LANE_COUNT_FOUR, LINK_RATE_LOW},
+		{LANE_COUNT_ONE, LINK_RATE_HIGH2},
+		{LANE_COUNT_TWO, LINK_RATE_HIGH},
+		{LANE_COUNT_TWO, LINK_RATE_LOW},
+		{LANE_COUNT_ONE, LINK_RATE_HIGH},
+		{LANE_COUNT_ONE, LINK_RATE_LOW},
+};
+
+static const struct dc_link_settings fail_safe_link_settings = {
+		.lane_count = LANE_COUNT_ONE,
+		.link_rate = LINK_RATE_LOW,
+		.link_spread = LINK_SPREAD_DISABLED,
+};
+
+bool is_dp_active_dongle(const struct dc_link *link)
+{
+	return (link->dpcd_caps.dongle_type >= DISPLAY_DONGLE_DP_VGA_CONVERTER) &&
+				(link->dpcd_caps.dongle_type <= DISPLAY_DONGLE_DP_HDMI_CONVERTER);
+}
+
+bool is_dp_branch_device(const struct dc_link *link)
+{
+	return link->dpcd_caps.is_branch_dev;
+}
+
+static int translate_dpcd_max_bpc(enum dpcd_downstream_port_max_bpc bpc)
+{
+	switch (bpc) {
+	case DOWN_STREAM_MAX_8BPC:
+		return 8;
+	case DOWN_STREAM_MAX_10BPC:
+		return 10;
+	case DOWN_STREAM_MAX_12BPC:
+		return 12;
+	case DOWN_STREAM_MAX_16BPC:
+		return 16;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
+uint8_t dp_parse_lttpr_repeater_count(uint8_t lttpr_repeater_count)
+{
+	switch (lttpr_repeater_count) {
+	case 0x80: // 1 lttpr repeater
+		return 1;
+	case 0x40: // 2 lttpr repeaters
+		return 2;
+	case 0x20: // 3 lttpr repeaters
+		return 3;
+	case 0x10: // 4 lttpr repeaters
+		return 4;
+	case 0x08: // 5 lttpr repeaters
+		return 5;
+	case 0x04: // 6 lttpr repeaters
+		return 6;
+	case 0x02: // 7 lttpr repeaters
+		return 7;
+	case 0x01: // 8 lttpr repeaters
+		return 8;
+	default:
+		break;
+	}
+	return 0; // invalid value
+}
+
+uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw)
+{
+	switch (bw) {
+	case 0b001:
+		return 9000000;
+	case 0b010:
+		return 18000000;
+	case 0b011:
+		return 24000000;
+	case 0b100:
+		return 32000000;
+	case 0b101:
+		return 40000000;
+	case 0b110:
+		return 48000000;
+	}
+
+	return 0;
+}
+
+static enum dc_link_rate linkRateInKHzToLinkRateMultiplier(uint32_t link_rate_in_khz)
+{
+	enum dc_link_rate link_rate;
+	// LinkRate is normally stored as a multiplier of 0.27 Gbps per lane. Do the translation.
+	switch (link_rate_in_khz) {
+	case 1620000:
+		link_rate = LINK_RATE_LOW;	// Rate_1 (RBR)	- 1.62 Gbps/Lane
+		break;
+	case 2160000:
+		link_rate = LINK_RATE_RATE_2;	// Rate_2	- 2.16 Gbps/Lane
+		break;
+	case 2430000:
+		link_rate = LINK_RATE_RATE_3;	// Rate_3	- 2.43 Gbps/Lane
+		break;
+	case 2700000:
+		link_rate = LINK_RATE_HIGH;	// Rate_4 (HBR)	- 2.70 Gbps/Lane
+		break;
+	case 3240000:
+		link_rate = LINK_RATE_RBR2;	// Rate_5 (RBR2)- 3.24 Gbps/Lane
+		break;
+	case 4320000:
+		link_rate = LINK_RATE_RATE_6;	// Rate_6	- 4.32 Gbps/Lane
+		break;
+	case 5400000:
+		link_rate = LINK_RATE_HIGH2;	// Rate_7 (HBR2)- 5.40 Gbps/Lane
+		break;
+	case 8100000:
+		link_rate = LINK_RATE_HIGH3;	// Rate_8 (HBR3)- 8.10 Gbps/Lane
+		break;
+	default:
+		link_rate = LINK_RATE_UNKNOWN;
+		break;
+	}
+	return link_rate;
+}
+
+static union dp_cable_id intersect_cable_id(
+		union dp_cable_id *a, union dp_cable_id *b)
+{
+	union dp_cable_id out;
+
+	out.bits.UHBR10_20_CAPABILITY = MIN(a->bits.UHBR10_20_CAPABILITY,
+			b->bits.UHBR10_20_CAPABILITY);
+	out.bits.UHBR13_5_CAPABILITY = MIN(a->bits.UHBR13_5_CAPABILITY,
+			b->bits.UHBR13_5_CAPABILITY);
+	out.bits.CABLE_TYPE = MAX(a->bits.CABLE_TYPE, b->bits.CABLE_TYPE);
+
+	return out;
+}
+
+/*
+ * Return PCON's post FRL link training supported BW if its non-zero, otherwise return max_supported_frl_bw.
+ */
+static uint32_t intersect_frl_link_bw_support(
+	const uint32_t max_supported_frl_bw_in_kbps,
+	const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
+{
+	uint32_t supported_bw_in_kbps = max_supported_frl_bw_in_kbps;
+
+	// HDMI_ENCODED_LINK_BW bits are only valid if HDMI Link Configuration bit is 1 (FRL mode)
+	if (hdmi_encoded_link_bw.bits.FRL_MODE) {
+		if (hdmi_encoded_link_bw.bits.BW_48Gbps)
+			supported_bw_in_kbps = 48000000;
+		else if (hdmi_encoded_link_bw.bits.BW_40Gbps)
+			supported_bw_in_kbps = 40000000;
+		else if (hdmi_encoded_link_bw.bits.BW_32Gbps)
+			supported_bw_in_kbps = 32000000;
+		else if (hdmi_encoded_link_bw.bits.BW_24Gbps)
+			supported_bw_in_kbps = 24000000;
+		else if (hdmi_encoded_link_bw.bits.BW_18Gbps)
+			supported_bw_in_kbps = 18000000;
+		else if (hdmi_encoded_link_bw.bits.BW_9Gbps)
+			supported_bw_in_kbps = 9000000;
+	}
+
+	return supported_bw_in_kbps;
+}
+
+static enum clock_source_id get_clock_source_id(struct dc_link *link)
+{
+	enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_UNDEFINED;
+	struct clock_source *dp_cs = link->dc->res_pool->dp_clock_source;
+
+	if (dp_cs != NULL) {
+		dp_cs_id = dp_cs->id;
+	} else {
+		/*
+		 * dp clock source is not initialized for some reason.
+		 * Should not happen, CLOCK_SOURCE_ID_EXTERNAL will be used
+		 */
+		ASSERT(dp_cs);
+	}
+
+	return dp_cs_id;
+}
+
+static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data,
+		int length)
+{
+	int retry = 0;
+	union dp_downstream_port_present ds_port = { 0 };
+
+	if (!link->dpcd_caps.dpcd_rev.raw) {
+		do {
+			dc_link_dp_receiver_power_ctrl(link, true);
+			core_link_read_dpcd(link, DP_DPCD_REV,
+							dpcd_data, length);
+			link->dpcd_caps.dpcd_rev.raw = dpcd_data[
+				DP_DPCD_REV -
+				DP_DPCD_REV];
+		} while (retry++ < 4 && !link->dpcd_caps.dpcd_rev.raw);
+	}
+
+	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
+				 DP_DPCD_REV];
+
+	if (link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER) {
+		switch (link->dpcd_caps.branch_dev_id) {
+		/* 0010FA active dongles (DP-VGA, DP-DLDVI converters) power down
+		 * all internal circuits including AUX communication preventing
+		 * reading DPCD table and EDID (spec violation).
+		 * Encoder will skip DP RX power down on disable_output to
+		 * keep receiver powered all the time.*/
+		case DP_BRANCH_DEVICE_ID_0010FA:
+		case DP_BRANCH_DEVICE_ID_0080E1:
+		case DP_BRANCH_DEVICE_ID_00E04C:
+			link->wa_flags.dp_keep_receiver_powered = true;
+			break;
+
+		/* TODO: May need work around for other dongles. */
+		default:
+			link->wa_flags.dp_keep_receiver_powered = false;
+			break;
+		}
+	} else
+		link->wa_flags.dp_keep_receiver_powered = false;
+}
+
+bool dc_link_is_fec_supported(const struct dc_link *link)
+{
+	/* TODO - use asic cap instead of link_enc->features
+	 * we no longer know which link enc to use for this link before commit
+	 */
+	struct link_encoder *link_enc = NULL;
+
+	link_enc = link_enc_cfg_get_link_enc(link);
+	ASSERT(link_enc);
+
+	return (dc_is_dp_signal(link->connector_signal) && link_enc &&
+			link_enc->features.fec_supported &&
+			link->dpcd_caps.fec_cap.bits.FEC_CAPABLE &&
+			!IS_FPGA_MAXIMUS_DC(link->ctx->dce_environment));
+}
+
+bool dc_link_should_enable_fec(const struct dc_link *link)
+{
+	bool force_disable = false;
+
+	if (link->fec_state == dc_link_fec_enabled)
+		force_disable = false;
+	else if (link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT_MST &&
+			link->local_sink &&
+			link->local_sink->edid_caps.panel_patch.disable_fec)
+		force_disable = true;
+	else if (link->connector_signal == SIGNAL_TYPE_EDP
+			&& (link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.
+			 dsc_support.DSC_SUPPORT == false
+				|| link->panel_config.dsc.disable_dsc_edp
+				|| !link->dc->caps.edp_dsc_support))
+		force_disable = true;
+
+	return !force_disable && dc_link_is_fec_supported(link);
+}
+
+bool link_is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx)
+{
+	/* If this assert is hit then we have a link encoder dynamic management issue */
+	ASSERT(pipe_ctx->stream_res.hpo_dp_stream_enc ? pipe_ctx->link_res.hpo_dp_link_enc != NULL : true);
+	return (pipe_ctx->stream_res.hpo_dp_stream_enc &&
+			pipe_ctx->link_res.hpo_dp_link_enc &&
+			dc_is_dp_signal(pipe_ctx->stream->signal));
+}
+
+bool dp_is_lttpr_present(struct dc_link *link)
+{
+	return (dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) != 0 &&
+			link->dpcd_caps.lttpr_caps.max_lane_count > 0 &&
+			link->dpcd_caps.lttpr_caps.max_lane_count <= 4 &&
+			link->dpcd_caps.lttpr_caps.revision.raw >= 0x14);
+}
+
+/* in DP compliance test, DPR-120 may have
+ * a random value in its MAX_LINK_BW dpcd field.
+ * We map it to the maximum supported link rate that
+ * is smaller than MAX_LINK_BW in this case.
+ */
+static enum dc_link_rate get_link_rate_from_max_link_bw(
+		 uint8_t max_link_bw)
+{
+	enum dc_link_rate link_rate;
+
+	if (max_link_bw >= LINK_RATE_HIGH3) {
+		link_rate = LINK_RATE_HIGH3;
+	} else if (max_link_bw < LINK_RATE_HIGH3
+			&& max_link_bw >= LINK_RATE_HIGH2) {
+		link_rate = LINK_RATE_HIGH2;
+	} else if (max_link_bw < LINK_RATE_HIGH2
+			&& max_link_bw >= LINK_RATE_HIGH) {
+		link_rate = LINK_RATE_HIGH;
+	} else if (max_link_bw < LINK_RATE_HIGH
+			&& max_link_bw >= LINK_RATE_LOW) {
+		link_rate = LINK_RATE_LOW;
+	} else {
+		link_rate = LINK_RATE_UNKNOWN;
+	}
+
+	return link_rate;
+}
+
+static enum dc_link_rate get_lttpr_max_link_rate(struct dc_link *link)
+{
+	enum dc_link_rate lttpr_max_link_rate = link->dpcd_caps.lttpr_caps.max_link_rate;
+
+	if (link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.bits.UHBR20)
+		lttpr_max_link_rate = LINK_RATE_UHBR20;
+	else if (link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.bits.UHBR13_5)
+		lttpr_max_link_rate = LINK_RATE_UHBR13_5;
+	else if (link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.bits.UHBR10)
+		lttpr_max_link_rate = LINK_RATE_UHBR10;
+
+	return lttpr_max_link_rate;
+}
+
+static enum dc_link_rate get_cable_max_link_rate(struct dc_link *link)
+{
+	enum dc_link_rate cable_max_link_rate = LINK_RATE_UNKNOWN;
+
+	if (link->dpcd_caps.cable_id.bits.UHBR10_20_CAPABILITY & DP_UHBR20)
+		cable_max_link_rate = LINK_RATE_UHBR20;
+	else if (link->dpcd_caps.cable_id.bits.UHBR13_5_CAPABILITY)
+		cable_max_link_rate = LINK_RATE_UHBR13_5;
+	else if (link->dpcd_caps.cable_id.bits.UHBR10_20_CAPABILITY & DP_UHBR10)
+		cable_max_link_rate = LINK_RATE_UHBR10;
+
+	return cable_max_link_rate;
+}
+
+static inline bool reached_minimum_lane_count(enum dc_lane_count lane_count)
+{
+	return lane_count <= LANE_COUNT_ONE;
+}
+
+static inline bool reached_minimum_link_rate(enum dc_link_rate link_rate)
+{
+	return link_rate <= LINK_RATE_LOW;
+}
+
+static enum dc_lane_count reduce_lane_count(enum dc_lane_count lane_count)
+{
+	switch (lane_count) {
+	case LANE_COUNT_FOUR:
+		return LANE_COUNT_TWO;
+	case LANE_COUNT_TWO:
+		return LANE_COUNT_ONE;
+	case LANE_COUNT_ONE:
+		return LANE_COUNT_UNKNOWN;
+	default:
+		return LANE_COUNT_UNKNOWN;
+	}
+}
+
+static enum dc_link_rate reduce_link_rate(enum dc_link_rate link_rate)
+{
+	switch (link_rate) {
+	case LINK_RATE_UHBR20:
+		return LINK_RATE_UHBR13_5;
+	case LINK_RATE_UHBR13_5:
+		return LINK_RATE_UHBR10;
+	case LINK_RATE_UHBR10:
+		return LINK_RATE_HIGH3;
+	case LINK_RATE_HIGH3:
+		return LINK_RATE_HIGH2;
+	case LINK_RATE_HIGH2:
+		return LINK_RATE_HIGH;
+	case LINK_RATE_HIGH:
+		return LINK_RATE_LOW;
+	case LINK_RATE_LOW:
+		return LINK_RATE_UNKNOWN;
+	default:
+		return LINK_RATE_UNKNOWN;
+	}
+}
+
+static enum dc_lane_count increase_lane_count(enum dc_lane_count lane_count)
+{
+	switch (lane_count) {
+	case LANE_COUNT_ONE:
+		return LANE_COUNT_TWO;
+	case LANE_COUNT_TWO:
+		return LANE_COUNT_FOUR;
+	default:
+		return LANE_COUNT_UNKNOWN;
+	}
+}
+
+static enum dc_link_rate increase_link_rate(struct dc_link *link,
+		enum dc_link_rate link_rate)
+{
+	switch (link_rate) {
+	case LINK_RATE_LOW:
+		return LINK_RATE_HIGH;
+	case LINK_RATE_HIGH:
+		return LINK_RATE_HIGH2;
+	case LINK_RATE_HIGH2:
+		return LINK_RATE_HIGH3;
+	case LINK_RATE_HIGH3:
+		return LINK_RATE_UHBR10;
+	case LINK_RATE_UHBR10:
+		/* upto DP2.x specs UHBR13.5 is the only link rate that could be
+		 * not supported by DPRX when higher link rate is supported.
+		 * so we treat it as a special case for code simplicity. When we
+		 * have new specs with more link rates like this, we should
+		 * consider a more generic solution to handle discrete link
+		 * rate capabilities.
+		 */
+		return link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR13_5 ?
+				LINK_RATE_UHBR13_5 : LINK_RATE_UHBR20;
+	case LINK_RATE_UHBR13_5:
+		return LINK_RATE_UHBR20;
+	default:
+		return LINK_RATE_UNKNOWN;
+	}
+}
+
+static bool decide_fallback_link_setting_max_bw_policy(
+		struct dc_link *link,
+		const struct dc_link_settings *max,
+		struct dc_link_settings *cur,
+		enum link_training_result training_result)
+{
+	uint8_t cur_idx = 0, next_idx;
+	bool found = false;
+
+	if (training_result == LINK_TRAINING_ABORT)
+		return false;
+
+	while (cur_idx < ARRAY_SIZE(dp_lt_fallbacks))
+		/* find current index */
+		if (dp_lt_fallbacks[cur_idx].lane_count == cur->lane_count &&
+				dp_lt_fallbacks[cur_idx].link_rate == cur->link_rate)
+			break;
+		else
+			cur_idx++;
+
+	next_idx = cur_idx + 1;
+
+	while (next_idx < ARRAY_SIZE(dp_lt_fallbacks))
+		/* find next index */
+		if (dp_lt_fallbacks[next_idx].lane_count > max->lane_count ||
+				dp_lt_fallbacks[next_idx].link_rate > max->link_rate)
+			next_idx++;
+		else if (dp_lt_fallbacks[next_idx].link_rate == LINK_RATE_UHBR13_5 &&
+				link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR13_5 == 0)
+			/* upto DP2.x specs UHBR13.5 is the only link rate that
+			 * could be not supported by DPRX when higher link rate
+			 * is supported. so we treat it as a special case for
+			 * code simplicity. When we have new specs with more
+			 * link rates like this, we should consider a more
+			 * generic solution to handle discrete link rate
+			 * capabilities.
+			 */
+			next_idx++;
+		else
+			break;
+
+	if (next_idx < ARRAY_SIZE(dp_lt_fallbacks)) {
+		cur->lane_count = dp_lt_fallbacks[next_idx].lane_count;
+		cur->link_rate = dp_lt_fallbacks[next_idx].link_rate;
+		found = true;
+	}
+
+	return found;
+}
+
+/*
+ * function: set link rate and lane count fallback based
+ * on current link setting and last link training result
+ * return value:
+ *			true - link setting could be set
+ *			false - has reached minimum setting
+ *					and no further fallback could be done
+ */
+bool decide_fallback_link_setting(
+		struct dc_link *link,
+		struct dc_link_settings *max,
+		struct dc_link_settings *cur,
+		enum link_training_result training_result)
+{
+	if (link_dp_get_encoding_format(max) == DP_128b_132b_ENCODING ||
+			link->dc->debug.force_dp2_lt_fallback_method)
+		return decide_fallback_link_setting_max_bw_policy(link, max,
+				cur, training_result);
+
+	switch (training_result) {
+	case LINK_TRAINING_CR_FAIL_LANE0:
+	case LINK_TRAINING_CR_FAIL_LANE1:
+	case LINK_TRAINING_CR_FAIL_LANE23:
+	case LINK_TRAINING_LQA_FAIL:
+	{
+		if (!reached_minimum_link_rate(cur->link_rate)) {
+			cur->link_rate = reduce_link_rate(cur->link_rate);
+		} else if (!reached_minimum_lane_count(cur->lane_count)) {
+			cur->link_rate = max->link_rate;
+			if (training_result == LINK_TRAINING_CR_FAIL_LANE0)
+				return false;
+			else if (training_result == LINK_TRAINING_CR_FAIL_LANE1)
+				cur->lane_count = LANE_COUNT_ONE;
+			else if (training_result == LINK_TRAINING_CR_FAIL_LANE23)
+				cur->lane_count = LANE_COUNT_TWO;
+			else
+				cur->lane_count = reduce_lane_count(cur->lane_count);
+		} else {
+			return false;
+		}
+		break;
+	}
+	case LINK_TRAINING_EQ_FAIL_EQ:
+	case LINK_TRAINING_EQ_FAIL_CR_PARTIAL:
+	{
+		if (!reached_minimum_lane_count(cur->lane_count)) {
+			cur->lane_count = reduce_lane_count(cur->lane_count);
+		} else if (!reached_minimum_link_rate(cur->link_rate)) {
+			cur->link_rate = reduce_link_rate(cur->link_rate);
+			/* Reduce max link rate to avoid potential infinite loop.
+			 * Needed so that any subsequent CR_FAIL fallback can't
+			 * re-set the link rate higher than the link rate from
+			 * the latest EQ_FAIL fallback.
+			 */
+			max->link_rate = cur->link_rate;
+			cur->lane_count = max->lane_count;
+		} else {
+			return false;
+		}
+		break;
+	}
+	case LINK_TRAINING_EQ_FAIL_CR:
+	{
+		if (!reached_minimum_link_rate(cur->link_rate)) {
+			cur->link_rate = reduce_link_rate(cur->link_rate);
+			/* Reduce max link rate to avoid potential infinite loop.
+			 * Needed so that any subsequent CR_FAIL fallback can't
+			 * re-set the link rate higher than the link rate from
+			 * the latest EQ_FAIL fallback.
+			 */
+			max->link_rate = cur->link_rate;
+			cur->lane_count = max->lane_count;
+		} else {
+			return false;
+		}
+		break;
+	}
+	default:
+		return false;
+	}
+	return true;
+}
+static bool decide_dp_link_settings(struct dc_link *link, struct dc_link_settings *link_setting, uint32_t req_bw)
+{
+	struct dc_link_settings initial_link_setting = {
+		LANE_COUNT_ONE, LINK_RATE_LOW, LINK_SPREAD_DISABLED, false, 0};
+	struct dc_link_settings current_link_setting =
+			initial_link_setting;
+	uint32_t link_bw;
+
+	if (req_bw > dc_link_bandwidth_kbps(link, &link->verified_link_cap))
+		return false;
+
+	/* search for the minimum link setting that:
+	 * 1. is supported according to the link training result
+	 * 2. could support the b/w requested by the timing
+	 */
+	while (current_link_setting.link_rate <=
+			link->verified_link_cap.link_rate) {
+		link_bw = dc_link_bandwidth_kbps(
+				link,
+				&current_link_setting);
+		if (req_bw <= link_bw) {
+			*link_setting = current_link_setting;
+			return true;
+		}
+
+		if (current_link_setting.lane_count <
+				link->verified_link_cap.lane_count) {
+			current_link_setting.lane_count =
+					increase_lane_count(
+							current_link_setting.lane_count);
+		} else {
+			current_link_setting.link_rate =
+					increase_link_rate(link,
+							current_link_setting.link_rate);
+			current_link_setting.lane_count =
+					initial_link_setting.lane_count;
+		}
+	}
+
+	return false;
+}
+
+bool dc_link_decide_edp_link_settings(struct dc_link *link, struct dc_link_settings *link_setting, uint32_t req_bw)
+{
+	struct dc_link_settings initial_link_setting;
+	struct dc_link_settings current_link_setting;
+	uint32_t link_bw;
+
+	/*
+	 * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
+	 * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
+	 */
+	if (link->dpcd_caps.dpcd_rev.raw < DPCD_REV_13 ||
+			link->dpcd_caps.edp_supported_link_rates_count == 0) {
+		*link_setting = link->verified_link_cap;
+		return true;
+	}
+
+	memset(&initial_link_setting, 0, sizeof(initial_link_setting));
+	initial_link_setting.lane_count = LANE_COUNT_ONE;
+	initial_link_setting.link_rate = link->dpcd_caps.edp_supported_link_rates[0];
+	initial_link_setting.link_spread = LINK_SPREAD_DISABLED;
+	initial_link_setting.use_link_rate_set = true;
+	initial_link_setting.link_rate_set = 0;
+	current_link_setting = initial_link_setting;
+
+	/* search for the minimum link setting that:
+	 * 1. is supported according to the link training result
+	 * 2. could support the b/w requested by the timing
+	 */
+	while (current_link_setting.link_rate <=
+			link->verified_link_cap.link_rate) {
+		link_bw = dc_link_bandwidth_kbps(
+				link,
+				&current_link_setting);
+		if (req_bw <= link_bw) {
+			*link_setting = current_link_setting;
+			return true;
+		}
+
+		if (current_link_setting.lane_count <
+				link->verified_link_cap.lane_count) {
+			current_link_setting.lane_count =
+					increase_lane_count(
+							current_link_setting.lane_count);
+		} else {
+			if (current_link_setting.link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) {
+				current_link_setting.link_rate_set++;
+				current_link_setting.link_rate =
+					link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
+				current_link_setting.lane_count =
+									initial_link_setting.lane_count;
+			} else
+				break;
+		}
+	}
+	return false;
+}
+
+bool decide_edp_link_settings_with_dsc(struct dc_link *link,
+		struct dc_link_settings *link_setting,
+		uint32_t req_bw,
+		enum dc_link_rate max_link_rate)
+{
+	struct dc_link_settings initial_link_setting;
+	struct dc_link_settings current_link_setting;
+	uint32_t link_bw;
+
+	unsigned int policy = 0;
+
+	policy = link->panel_config.dsc.force_dsc_edp_policy;
+	if (max_link_rate == LINK_RATE_UNKNOWN)
+		max_link_rate = link->verified_link_cap.link_rate;
+	/*
+	 * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
+	 * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
+	 */
+	if ((link->dpcd_caps.dpcd_rev.raw < DPCD_REV_13 ||
+			link->dpcd_caps.edp_supported_link_rates_count == 0)) {
+		/* for DSC enabled case, we search for minimum lane count */
+		memset(&initial_link_setting, 0, sizeof(initial_link_setting));
+		initial_link_setting.lane_count = LANE_COUNT_ONE;
+		initial_link_setting.link_rate = LINK_RATE_LOW;
+		initial_link_setting.link_spread = LINK_SPREAD_DISABLED;
+		initial_link_setting.use_link_rate_set = false;
+		initial_link_setting.link_rate_set = 0;
+		current_link_setting = initial_link_setting;
+		if (req_bw > dc_link_bandwidth_kbps(link, &link->verified_link_cap))
+			return false;
+
+		/* search for the minimum link setting that:
+		 * 1. is supported according to the link training result
+		 * 2. could support the b/w requested by the timing
+		 */
+		while (current_link_setting.link_rate <=
+				max_link_rate) {
+			link_bw = dc_link_bandwidth_kbps(
+					link,
+					&current_link_setting);
+			if (req_bw <= link_bw) {
+				*link_setting = current_link_setting;
+				return true;
+			}
+			if (policy) {
+				/* minimize lane */
+				if (current_link_setting.link_rate < max_link_rate) {
+					current_link_setting.link_rate =
+							increase_link_rate(link,
+									current_link_setting.link_rate);
+				} else {
+					if (current_link_setting.lane_count <
+									link->verified_link_cap.lane_count) {
+						current_link_setting.lane_count =
+								increase_lane_count(
+										current_link_setting.lane_count);
+						current_link_setting.link_rate = initial_link_setting.link_rate;
+					} else
+						break;
+				}
+			} else {
+				/* minimize link rate */
+				if (current_link_setting.lane_count <
+						link->verified_link_cap.lane_count) {
+					current_link_setting.lane_count =
+							increase_lane_count(
+									current_link_setting.lane_count);
+				} else {
+					current_link_setting.link_rate =
+							increase_link_rate(link,
+									current_link_setting.link_rate);
+					current_link_setting.lane_count =
+							initial_link_setting.lane_count;
+				}
+			}
+		}
+		return false;
+	}
+
+	/* if optimize edp link is supported */
+	memset(&initial_link_setting, 0, sizeof(initial_link_setting));
+	initial_link_setting.lane_count = LANE_COUNT_ONE;
+	initial_link_setting.link_rate = link->dpcd_caps.edp_supported_link_rates[0];
+	initial_link_setting.link_spread = LINK_SPREAD_DISABLED;
+	initial_link_setting.use_link_rate_set = true;
+	initial_link_setting.link_rate_set = 0;
+	current_link_setting = initial_link_setting;
+
+	/* search for the minimum link setting that:
+	 * 1. is supported according to the link training result
+	 * 2. could support the b/w requested by the timing
+	 */
+	while (current_link_setting.link_rate <=
+			max_link_rate) {
+		link_bw = dc_link_bandwidth_kbps(
+				link,
+				&current_link_setting);
+		if (req_bw <= link_bw) {
+			*link_setting = current_link_setting;
+			return true;
+		}
+		if (policy) {
+			/* minimize lane */
+			if (current_link_setting.link_rate_set <
+					link->dpcd_caps.edp_supported_link_rates_count
+					&& current_link_setting.link_rate < max_link_rate) {
+				current_link_setting.link_rate_set++;
+				current_link_setting.link_rate =
+					link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
+			} else {
+				if (current_link_setting.lane_count < link->verified_link_cap.lane_count) {
+					current_link_setting.lane_count =
+							increase_lane_count(
+									current_link_setting.lane_count);
+					current_link_setting.link_rate_set = initial_link_setting.link_rate_set;
+					current_link_setting.link_rate =
+						link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
+				} else
+					break;
+			}
+		} else {
+			/* minimize link rate */
+			if (current_link_setting.lane_count <
+					link->verified_link_cap.lane_count) {
+				current_link_setting.lane_count =
+						increase_lane_count(
+								current_link_setting.lane_count);
+			} else {
+				if (current_link_setting.link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) {
+					current_link_setting.link_rate_set++;
+					current_link_setting.link_rate =
+						link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set];
+					current_link_setting.lane_count =
+						initial_link_setting.lane_count;
+				} else
+					break;
+			}
+		}
+	}
+	return false;
+}
+
+static bool decide_mst_link_settings(const struct dc_link *link, struct dc_link_settings *link_setting)
+{
+	*link_setting = link->verified_link_cap;
+	return true;
+}
+
+bool link_decide_link_settings(struct dc_stream_state *stream,
+	struct dc_link_settings *link_setting)
+{
+	struct dc_link *link = stream->link;
+	uint32_t req_bw = dc_bandwidth_in_kbps_from_timing(&stream->timing);
+
+	memset(link_setting, 0, sizeof(*link_setting));
+
+	/* if preferred is specified through AMDDP, use it, if it's enough
+	 * to drive the mode
+	 */
+	if (link->preferred_link_setting.lane_count !=
+			LANE_COUNT_UNKNOWN &&
+			link->preferred_link_setting.link_rate !=
+					LINK_RATE_UNKNOWN) {
+		*link_setting = link->preferred_link_setting;
+		return true;
+	}
+
+	/* MST doesn't perform link training for now
+	 * TODO: add MST specific link training routine
+	 */
+	if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
+		decide_mst_link_settings(link, link_setting);
+	} else if (link->connector_signal == SIGNAL_TYPE_EDP) {
+		/* enable edp link optimization for DSC eDP case */
+		if (stream->timing.flags.DSC) {
+			enum dc_link_rate max_link_rate = LINK_RATE_UNKNOWN;
+
+			if (link->panel_config.dsc.force_dsc_edp_policy) {
+				/* calculate link max link rate cap*/
+				struct dc_link_settings tmp_link_setting;
+				struct dc_crtc_timing tmp_timing = stream->timing;
+				uint32_t orig_req_bw;
+
+				tmp_link_setting.link_rate = LINK_RATE_UNKNOWN;
+				tmp_timing.flags.DSC = 0;
+				orig_req_bw = dc_bandwidth_in_kbps_from_timing(&tmp_timing);
+				dc_link_decide_edp_link_settings(link, &tmp_link_setting, orig_req_bw);
+				max_link_rate = tmp_link_setting.link_rate;
+			}
+			decide_edp_link_settings_with_dsc(link, link_setting, req_bw, max_link_rate);
+		} else {
+			dc_link_decide_edp_link_settings(link, link_setting, req_bw);
+		}
+	} else {
+		decide_dp_link_settings(link, link_setting, req_bw);
+	}
+
+	return link_setting->lane_count != LANE_COUNT_UNKNOWN &&
+			link_setting->link_rate != LINK_RATE_UNKNOWN;
+}
+
+enum dp_link_encoding link_dp_get_encoding_format(const struct dc_link_settings *link_settings)
+{
+	if ((link_settings->link_rate >= LINK_RATE_LOW) &&
+			(link_settings->link_rate <= LINK_RATE_HIGH3))
+		return DP_8b_10b_ENCODING;
+	else if ((link_settings->link_rate >= LINK_RATE_UHBR10) &&
+			(link_settings->link_rate <= LINK_RATE_UHBR20))
+		return DP_128b_132b_ENCODING;
+	return DP_UNKNOWN_ENCODING;
+}
+
+enum dp_link_encoding dc_link_dp_mst_decide_link_encoding_format(const struct dc_link *link)
+{
+	struct dc_link_settings link_settings = {0};
+
+	if (!dc_is_dp_signal(link->connector_signal))
+		return DP_UNKNOWN_ENCODING;
+
+	if (link->preferred_link_setting.lane_count !=
+			LANE_COUNT_UNKNOWN &&
+			link->preferred_link_setting.link_rate !=
+					LINK_RATE_UNKNOWN) {
+		link_settings = link->preferred_link_setting;
+	} else {
+		decide_mst_link_settings(link, &link_settings);
+	}
+
+	return link_dp_get_encoding_format(&link_settings);
+}
+
+static void read_dp_device_vendor_id(struct dc_link *link)
+{
+	struct dp_device_vendor_id dp_id;
+
+	/* read IEEE branch device id */
+	core_link_read_dpcd(
+		link,
+		DP_BRANCH_OUI,
+		(uint8_t *)&dp_id,
+		sizeof(dp_id));
+
+	link->dpcd_caps.branch_dev_id =
+		(dp_id.ieee_oui[0] << 16) +
+		(dp_id.ieee_oui[1] << 8) +
+		dp_id.ieee_oui[2];
+
+	memmove(
+		link->dpcd_caps.branch_dev_name,
+		dp_id.ieee_device_id,
+		sizeof(dp_id.ieee_device_id));
+}
+
+static enum dc_status wake_up_aux_channel(struct dc_link *link)
+{
+	enum dc_status status = DC_ERROR_UNEXPECTED;
+	uint32_t aux_channel_retry_cnt = 0;
+	uint8_t dpcd_power_state = '\0';
+
+	while (status != DC_OK && aux_channel_retry_cnt < 10) {
+		status = core_link_read_dpcd(link, DP_SET_POWER,
+				&dpcd_power_state, sizeof(dpcd_power_state));
+
+		/* Delay 1 ms if AUX CH is in power down state. Based on spec
+		 * section 2.3.1.2, if AUX CH may be powered down due to
+		 * write to DPCD 600h = 2. Sink AUX CH is monitoring differential
+		 * signal and may need up to 1 ms before being able to reply.
+		 */
+		if (status != DC_OK || dpcd_power_state == DP_SET_POWER_D3) {
+			udelay(1000);
+			aux_channel_retry_cnt++;
+		}
+	}
+
+	if (status != DC_OK) {
+		dpcd_power_state = DP_SET_POWER_D0;
+		status = core_link_write_dpcd(
+				link,
+				DP_SET_POWER,
+				&dpcd_power_state,
+				sizeof(dpcd_power_state));
+
+		dpcd_power_state = DP_SET_POWER_D3;
+		status = core_link_write_dpcd(
+				link,
+				DP_SET_POWER,
+				&dpcd_power_state,
+				sizeof(dpcd_power_state));
+		return DC_ERROR_UNEXPECTED;
+	}
+
+	return DC_OK;
+}
+
+static void get_active_converter_info(
+	uint8_t data, struct dc_link *link)
+{
+	union dp_downstream_port_present ds_port = { .byte = data };
+	memset(&link->dpcd_caps.dongle_caps, 0, sizeof(link->dpcd_caps.dongle_caps));
+
+	/* decode converter info*/
+	if (!ds_port.fields.PORT_PRESENT) {
+		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
+		set_dongle_type(link->ddc,
+				link->dpcd_caps.dongle_type);
+		link->dpcd_caps.is_branch_dev = false;
+		return;
+	}
+
+	/* DPCD 0x5 bit 0 = 1, it indicate it's branch device */
+	link->dpcd_caps.is_branch_dev = ds_port.fields.PORT_PRESENT;
+
+	switch (ds_port.fields.PORT_TYPE) {
+	case DOWNSTREAM_VGA:
+		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_DP_VGA_CONVERTER;
+		break;
+	case DOWNSTREAM_DVI_HDMI_DP_PLUS_PLUS:
+		/* At this point we don't know is it DVI or HDMI or DP++,
+		 * assume DVI.*/
+		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_DP_DVI_CONVERTER;
+		break;
+	default:
+		link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
+		break;
+	}
+
+	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_11) {
+		uint8_t det_caps[16]; /* CTS 4.2.2.7 expects source to read Detailed Capabilities Info : 00080h-0008F.*/
+		union dwnstream_port_caps_byte0 *port_caps =
+			(union dwnstream_port_caps_byte0 *)det_caps;
+		if (core_link_read_dpcd(link, DP_DOWNSTREAM_PORT_0,
+				det_caps, sizeof(det_caps)) == DC_OK) {
+
+			switch (port_caps->bits.DWN_STRM_PORTX_TYPE) {
+			/*Handle DP case as DONGLE_NONE*/
+			case DOWN_STREAM_DETAILED_DP:
+				link->dpcd_caps.dongle_type = DISPLAY_DONGLE_NONE;
+				break;
+			case DOWN_STREAM_DETAILED_VGA:
+				link->dpcd_caps.dongle_type =
+					DISPLAY_DONGLE_DP_VGA_CONVERTER;
+				break;
+			case DOWN_STREAM_DETAILED_DVI:
+				link->dpcd_caps.dongle_type =
+					DISPLAY_DONGLE_DP_DVI_CONVERTER;
+				break;
+			case DOWN_STREAM_DETAILED_HDMI:
+			case DOWN_STREAM_DETAILED_DP_PLUS_PLUS:
+				/*Handle DP++ active converter case, process DP++ case as HDMI case according DP1.4 spec*/
+				link->dpcd_caps.dongle_type =
+					DISPLAY_DONGLE_DP_HDMI_CONVERTER;
+
+				link->dpcd_caps.dongle_caps.dongle_type = link->dpcd_caps.dongle_type;
+				if (ds_port.fields.DETAILED_CAPS) {
+
+					union dwnstream_port_caps_byte3_hdmi
+						hdmi_caps = {.raw = det_caps[3] };
+					union dwnstream_port_caps_byte2
+						hdmi_color_caps = {.raw = det_caps[2] };
+					link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz =
+						det_caps[1] * 2500;
+
+					link->dpcd_caps.dongle_caps.is_dp_hdmi_s3d_converter =
+						hdmi_caps.bits.FRAME_SEQ_TO_FRAME_PACK;
+					/*YCBCR capability only for HDMI case*/
+					if (port_caps->bits.DWN_STRM_PORTX_TYPE
+							== DOWN_STREAM_DETAILED_HDMI) {
+						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr422_pass_through =
+								hdmi_caps.bits.YCrCr422_PASS_THROUGH;
+						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr420_pass_through =
+								hdmi_caps.bits.YCrCr420_PASS_THROUGH;
+						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr422_converter =
+								hdmi_caps.bits.YCrCr422_CONVERSION;
+						link->dpcd_caps.dongle_caps.is_dp_hdmi_ycbcr420_converter =
+								hdmi_caps.bits.YCrCr420_CONVERSION;
+					}
+
+					link->dpcd_caps.dongle_caps.dp_hdmi_max_bpc =
+						translate_dpcd_max_bpc(
+							hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT);
+
+					if (link->dc->caps.dp_hdmi21_pcon_support) {
+						union hdmi_encoded_link_bw hdmi_encoded_link_bw;
+
+						link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps =
+								dc_link_bw_kbps_from_raw_frl_link_rate_data(
+										hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT);
+
+						// Intersect reported max link bw support with the supported link rate post FRL link training
+						if (core_link_read_dpcd(link, DP_PCON_HDMI_POST_FRL_STATUS,
+								&hdmi_encoded_link_bw.raw, sizeof(hdmi_encoded_link_bw)) == DC_OK) {
+							link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps = intersect_frl_link_bw_support(
+									link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps,
+									hdmi_encoded_link_bw);
+						}
+
+						if (link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps > 0)
+							link->dpcd_caps.dongle_caps.extendedCapValid = true;
+					}
+
+					if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz != 0)
+						link->dpcd_caps.dongle_caps.extendedCapValid = true;
+				}
+
+				break;
+			}
+		}
+	}
+
+	set_dongle_type(link->ddc, link->dpcd_caps.dongle_type);
+
+	{
+		struct dp_sink_hw_fw_revision dp_hw_fw_revision;
+
+		core_link_read_dpcd(
+			link,
+			DP_BRANCH_REVISION_START,
+			(uint8_t *)&dp_hw_fw_revision,
+			sizeof(dp_hw_fw_revision));
+
+		link->dpcd_caps.branch_hw_revision =
+			dp_hw_fw_revision.ieee_hw_rev;
+
+		memmove(
+			link->dpcd_caps.branch_fw_revision,
+			dp_hw_fw_revision.ieee_fw_rev,
+			sizeof(dp_hw_fw_revision.ieee_fw_rev));
+	}
+	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14 &&
+			link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) {
+		union dp_dfp_cap_ext dfp_cap_ext;
+		memset(&dfp_cap_ext, '\0', sizeof (dfp_cap_ext));
+		core_link_read_dpcd(
+				link,
+				DP_DFP_CAPABILITY_EXTENSION_SUPPORT,
+				dfp_cap_ext.raw,
+				sizeof(dfp_cap_ext.raw));
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.supported = dfp_cap_ext.fields.supported;
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.max_pixel_rate_in_mps =
+				dfp_cap_ext.fields.max_pixel_rate_in_mps[0] +
+				(dfp_cap_ext.fields.max_pixel_rate_in_mps[1] << 8);
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_h_active_width =
+				dfp_cap_ext.fields.max_video_h_active_width[0] +
+				(dfp_cap_ext.fields.max_video_h_active_width[1] << 8);
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_v_active_height =
+				dfp_cap_ext.fields.max_video_v_active_height[0] +
+				(dfp_cap_ext.fields.max_video_v_active_height[1] << 8);
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.encoding_format_caps =
+				dfp_cap_ext.fields.encoding_format_caps;
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.rgb_color_depth_caps =
+				dfp_cap_ext.fields.rgb_color_depth_caps;
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.ycbcr444_color_depth_caps =
+				dfp_cap_ext.fields.ycbcr444_color_depth_caps;
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.ycbcr422_color_depth_caps =
+				dfp_cap_ext.fields.ycbcr422_color_depth_caps;
+		link->dpcd_caps.dongle_caps.dfp_cap_ext.ycbcr420_color_depth_caps =
+				dfp_cap_ext.fields.ycbcr420_color_depth_caps;
+		DC_LOG_DP2("DFP capability extension is read at link %d", link->link_index);
+		DC_LOG_DP2("\tdfp_cap_ext.supported = %s", link->dpcd_caps.dongle_caps.dfp_cap_ext.supported ? "true" : "false");
+		DC_LOG_DP2("\tdfp_cap_ext.max_pixel_rate_in_mps = %d", link->dpcd_caps.dongle_caps.dfp_cap_ext.max_pixel_rate_in_mps);
+		DC_LOG_DP2("\tdfp_cap_ext.max_video_h_active_width = %d", link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_h_active_width);
+		DC_LOG_DP2("\tdfp_cap_ext.max_video_v_active_height = %d", link->dpcd_caps.dongle_caps.dfp_cap_ext.max_video_v_active_height);
+	}
+}
+
+static void apply_usbc_combo_phy_reset_wa(struct dc_link *link,
+		struct dc_link_settings *link_settings)
+{
+	/* Temporary Renoir-specific workaround PHY will sometimes be in bad
+	 * state on hotplugging display from certain USB-C dongle, so add extra
+	 * cycle of enabling and disabling the PHY before first link training.
+	 */
+	struct link_resource link_res = {0};
+	enum clock_source_id dp_cs_id = get_clock_source_id(link);
+
+	dp_enable_link_phy(link, &link_res, link->connector_signal,
+			dp_cs_id, link_settings);
+	dp_disable_link_phy(link, &link_res, link->connector_signal);
+}
+
+static bool dp_overwrite_extended_receiver_cap(struct dc_link *link)
+{
+	uint8_t dpcd_data[16];
+	uint32_t read_dpcd_retry_cnt = 3;
+	enum dc_status status = DC_ERROR_UNEXPECTED;
+	union dp_downstream_port_present ds_port = { 0 };
+	union down_stream_port_count down_strm_port_count;
+	union edp_configuration_cap edp_config_cap;
+
+	int i;
+
+	for (i = 0; i < read_dpcd_retry_cnt; i++) {
+		status = core_link_read_dpcd(
+				link,
+				DP_DPCD_REV,
+				dpcd_data,
+				sizeof(dpcd_data));
+		if (status == DC_OK)
+			break;
+	}
+
+	link->dpcd_caps.dpcd_rev.raw =
+		dpcd_data[DP_DPCD_REV - DP_DPCD_REV];
+
+	if (dpcd_data[DP_MAX_LANE_COUNT - DP_DPCD_REV] == 0)
+		return false;
+
+	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
+			DP_DPCD_REV];
+
+	get_active_converter_info(ds_port.byte, link);
+
+	down_strm_port_count.raw = dpcd_data[DP_DOWN_STREAM_PORT_COUNT -
+			DP_DPCD_REV];
+
+	link->dpcd_caps.allow_invalid_MSA_timing_param =
+		down_strm_port_count.bits.IGNORE_MSA_TIMING_PARAM;
+
+	link->dpcd_caps.max_ln_count.raw = dpcd_data[
+		DP_MAX_LANE_COUNT - DP_DPCD_REV];
+
+	link->dpcd_caps.max_down_spread.raw = dpcd_data[
+		DP_MAX_DOWNSPREAD - DP_DPCD_REV];
+
+	link->reported_link_cap.lane_count =
+		link->dpcd_caps.max_ln_count.bits.MAX_LANE_COUNT;
+	link->reported_link_cap.link_rate = dpcd_data[
+		DP_MAX_LINK_RATE - DP_DPCD_REV];
+	link->reported_link_cap.link_spread =
+		link->dpcd_caps.max_down_spread.bits.MAX_DOWN_SPREAD ?
+		LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED;
+
+	edp_config_cap.raw = dpcd_data[
+		DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV];
+	link->dpcd_caps.panel_mode_edp =
+		edp_config_cap.bits.ALT_SCRAMBLER_RESET;
+	link->dpcd_caps.dpcd_display_control_capable =
+		edp_config_cap.bits.DPCD_DISPLAY_CONTROL_CAPABLE;
+
+	return true;
+}
+
+void dc_link_overwrite_extended_receiver_cap(
+		struct dc_link *link)
+{
+	dp_overwrite_extended_receiver_cap(link);
+}
+
+void dpcd_set_source_specific_data(struct dc_link *link)
+{
+	if (!link->dc->vendor_signature.is_valid) {
+		enum dc_status result_write_min_hblank = DC_NOT_SUPPORTED;
+		struct dpcd_amd_signature amd_signature = {0};
+		struct dpcd_amd_device_id amd_device_id = {0};
+
+		amd_device_id.device_id_byte1 =
+				(uint8_t)(link->ctx->asic_id.chip_id);
+		amd_device_id.device_id_byte2 =
+				(uint8_t)(link->ctx->asic_id.chip_id >> 8);
+		amd_device_id.dce_version =
+				(uint8_t)(link->ctx->dce_version);
+		amd_device_id.dal_version_byte1 = 0x0; // needed? where to get?
+		amd_device_id.dal_version_byte2 = 0x0; // needed? where to get?
+
+		core_link_read_dpcd(link, DP_SOURCE_OUI,
+				(uint8_t *)(&amd_signature),
+				sizeof(amd_signature));
+
+		if (!((amd_signature.AMD_IEEE_TxSignature_byte1 == 0x0) &&
+			(amd_signature.AMD_IEEE_TxSignature_byte2 == 0x0) &&
+			(amd_signature.AMD_IEEE_TxSignature_byte3 == 0x1A))) {
+
+			amd_signature.AMD_IEEE_TxSignature_byte1 = 0x0;
+			amd_signature.AMD_IEEE_TxSignature_byte2 = 0x0;
+			amd_signature.AMD_IEEE_TxSignature_byte3 = 0x1A;
+
+			core_link_write_dpcd(link, DP_SOURCE_OUI,
+				(uint8_t *)(&amd_signature),
+				sizeof(amd_signature));
+		}
+
+		core_link_write_dpcd(link, DP_SOURCE_OUI+0x03,
+				(uint8_t *)(&amd_device_id),
+				sizeof(amd_device_id));
+
+		if (link->ctx->dce_version >= DCN_VERSION_2_0 &&
+			link->dc->caps.min_horizontal_blanking_period != 0) {
+
+			uint8_t hblank_size = (uint8_t)link->dc->caps.min_horizontal_blanking_period;
+
+			result_write_min_hblank = core_link_write_dpcd(link,
+				DP_SOURCE_MINIMUM_HBLANK_SUPPORTED, (uint8_t *)(&hblank_size),
+				sizeof(hblank_size));
+		}
+		DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION,
+							WPP_BIT_FLAG_DC_DETECTION_DP_CAPS,
+							"result=%u link_index=%u enum dce_version=%d DPCD=0x%04X min_hblank=%u branch_dev_id=0x%x branch_dev_name='%c%c%c%c%c%c'",
+							result_write_min_hblank,
+							link->link_index,
+							link->ctx->dce_version,
+							DP_SOURCE_MINIMUM_HBLANK_SUPPORTED,
+							link->dc->caps.min_horizontal_blanking_period,
+							link->dpcd_caps.branch_dev_id,
+							link->dpcd_caps.branch_dev_name[0],
+							link->dpcd_caps.branch_dev_name[1],
+							link->dpcd_caps.branch_dev_name[2],
+							link->dpcd_caps.branch_dev_name[3],
+							link->dpcd_caps.branch_dev_name[4],
+							link->dpcd_caps.branch_dev_name[5]);
+	} else {
+		core_link_write_dpcd(link, DP_SOURCE_OUI,
+				link->dc->vendor_signature.data.raw,
+				sizeof(link->dc->vendor_signature.data.raw));
+	}
+}
+
+void dpcd_write_cable_id_to_dprx(struct dc_link *link)
+{
+	if (!link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED ||
+			link->dpcd_caps.cable_id.raw == 0 ||
+			link->dprx_states.cable_id_written)
+		return;
+
+	core_link_write_dpcd(link, DP_CABLE_ATTRIBUTES_UPDATED_BY_DPTX,
+			&link->dpcd_caps.cable_id.raw,
+			sizeof(link->dpcd_caps.cable_id.raw));
+
+	link->dprx_states.cable_id_written = 1;
+}
+
+static bool get_usbc_cable_id(struct dc_link *link, union dp_cable_id *cable_id)
+{
+	union dmub_rb_cmd cmd;
+
+	if (!link->ctx->dmub_srv ||
+			link->ep_type != DISPLAY_ENDPOINT_PHY ||
+			link->link_enc->features.flags.bits.DP_IS_USB_C == 0)
+		return false;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.cable_id.header.type = DMUB_CMD_GET_USBC_CABLE_ID;
+	cmd.cable_id.header.payload_bytes = sizeof(cmd.cable_id.data);
+	cmd.cable_id.data.input.phy_inst = resource_transmitter_to_phy_idx(
+			link->dc, link->link_enc->transmitter);
+	if (dc_dmub_srv_cmd_with_reply_data(link->ctx->dmub_srv, &cmd) &&
+			cmd.cable_id.header.ret_status == 1) {
+		cable_id->raw = cmd.cable_id.data.output_raw;
+		DC_LOG_DC("usbc_cable_id = %d.\n", cable_id->raw);
+	}
+	return cmd.cable_id.header.ret_status == 1;
+}
+
+static void retrieve_cable_id(struct dc_link *link)
+{
+	union dp_cable_id usbc_cable_id;
+
+	link->dpcd_caps.cable_id.raw = 0;
+	core_link_read_dpcd(link, DP_CABLE_ATTRIBUTES_UPDATED_BY_DPRX,
+			&link->dpcd_caps.cable_id.raw, sizeof(uint8_t));
+
+	if (get_usbc_cable_id(link, &usbc_cable_id))
+		link->dpcd_caps.cable_id = intersect_cable_id(
+				&link->dpcd_caps.cable_id, &usbc_cable_id);
+}
+
+bool read_is_mst_supported(struct dc_link *link)
+{
+	bool mst          = false;
+	enum dc_status st = DC_OK;
+	union dpcd_rev rev;
+	union mstm_cap cap;
+
+	if (link->preferred_training_settings.mst_enable &&
+		*link->preferred_training_settings.mst_enable == false) {
+		return false;
+	}
+
+	rev.raw  = 0;
+	cap.raw  = 0;
+
+	st = core_link_read_dpcd(link, DP_DPCD_REV, &rev.raw,
+			sizeof(rev));
+
+	if (st == DC_OK && rev.raw >= DPCD_REV_12) {
+
+		st = core_link_read_dpcd(link, DP_MSTM_CAP,
+				&cap.raw, sizeof(cap));
+		if (st == DC_OK && cap.bits.MST_CAP == 1)
+			mst = true;
+	}
+	return mst;
+
+}
+
+/* Read additional sink caps defined in source specific DPCD area
+ * This function currently only reads from SinkCapability address (DP_SOURCE_SINK_CAP)
+ * TODO: Add FS caps and read from DP_SOURCE_SINK_FS_CAP as well
+ */
+static bool dpcd_read_sink_ext_caps(struct dc_link *link)
+{
+	uint8_t dpcd_data;
+
+	if (!link)
+		return false;
+
+	if (core_link_read_dpcd(link, DP_SOURCE_SINK_CAP, &dpcd_data, 1) != DC_OK)
+		return false;
+
+	link->dpcd_sink_ext_caps.raw = dpcd_data;
+	return true;
+}
+
+enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link)
+{
+	uint8_t lttpr_dpcd_data[8];
+	enum dc_status status = DC_ERROR_UNEXPECTED;
+	bool is_lttpr_present = false;
+
+	/* Logic to determine LTTPR support*/
+	bool vbios_lttpr_interop = link->dc->caps.vbios_lttpr_aware;
+
+	if (!vbios_lttpr_interop || !link->dc->caps.extended_aux_timeout_support)
+		return false;
+
+	/* By reading LTTPR capability, RX assumes that we will enable
+	 * LTTPR extended aux timeout if LTTPR is present.
+	 */
+	status = core_link_read_dpcd(
+			link,
+			DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV,
+			lttpr_dpcd_data,
+			sizeof(lttpr_dpcd_data));
+
+	link->dpcd_caps.lttpr_caps.revision.raw =
+			lttpr_dpcd_data[DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	link->dpcd_caps.lttpr_caps.max_link_rate =
+			lttpr_dpcd_data[DP_MAX_LINK_RATE_PHY_REPEATER -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	link->dpcd_caps.lttpr_caps.phy_repeater_cnt =
+			lttpr_dpcd_data[DP_PHY_REPEATER_CNT -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	link->dpcd_caps.lttpr_caps.max_lane_count =
+			lttpr_dpcd_data[DP_MAX_LANE_COUNT_PHY_REPEATER -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	link->dpcd_caps.lttpr_caps.mode =
+			lttpr_dpcd_data[DP_PHY_REPEATER_MODE -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	link->dpcd_caps.lttpr_caps.max_ext_timeout =
+			lttpr_dpcd_data[DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+	link->dpcd_caps.lttpr_caps.main_link_channel_coding.raw =
+			lttpr_dpcd_data[DP_MAIN_LINK_CHANNEL_CODING_PHY_REPEATER -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	link->dpcd_caps.lttpr_caps.supported_128b_132b_rates.raw =
+			lttpr_dpcd_data[DP_PHY_REPEATER_128B132B_RATES -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+
+	/* If this chip cap is set, at least one retimer must exist in the chain
+	 * Override count to 1 if we receive a known bad count (0 or an invalid value) */
+	if ((link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
+			(dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) == 0)) {
+		ASSERT(0);
+		link->dpcd_caps.lttpr_caps.phy_repeater_cnt = 0x80;
+		DC_LOG_DC("lttpr_caps forced phy_repeater_cnt = %d\n", link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+	}
+
+	/* Attempt to train in LTTPR transparent mode if repeater count exceeds 8. */
+	is_lttpr_present = dp_is_lttpr_present(link);
+
+	if (is_lttpr_present)
+		CONN_DATA_DETECT(link, lttpr_dpcd_data, sizeof(lttpr_dpcd_data), "LTTPR Caps: ");
+
+	DC_LOG_DC("is_lttpr_present = %d\n", is_lttpr_present);
+	return status;
+}
+
+static bool retrieve_link_cap(struct dc_link *link)
+{
+	/* DP_ADAPTER_CAP - DP_DPCD_REV + 1 == 16 and also DP_DSC_BITS_PER_PIXEL_INC - DP_DSC_SUPPORT + 1 == 16,
+	 * which means size 16 will be good for both of those DPCD register block reads
+	 */
+	uint8_t dpcd_data[16];
+	/*Only need to read 1 byte starting from DP_DPRX_FEATURE_ENUMERATION_LIST.
+	 */
+	uint8_t dpcd_dprx_data = '\0';
+
+	struct dp_device_vendor_id sink_id;
+	union down_stream_port_count down_strm_port_count;
+	union edp_configuration_cap edp_config_cap;
+	union dp_downstream_port_present ds_port = { 0 };
+	enum dc_status status = DC_ERROR_UNEXPECTED;
+	uint32_t read_dpcd_retry_cnt = 3;
+	int i;
+	struct dp_sink_hw_fw_revision dp_hw_fw_revision;
+	const uint32_t post_oui_delay = 30; // 30ms
+
+	memset(dpcd_data, '\0', sizeof(dpcd_data));
+	memset(&down_strm_port_count,
+		'\0', sizeof(union down_stream_port_count));
+	memset(&edp_config_cap, '\0',
+		sizeof(union edp_configuration_cap));
+
+	/* if extended timeout is supported in hardware,
+	 * default to LTTPR timeout (3.2ms) first as a W/A for DP link layer
+	 * CTS 4.2.1.1 regression introduced by CTS specs requirement update.
+	 */
+	try_to_configure_aux_timeout(link->ddc,
+			LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD);
+
+	status = dp_retrieve_lttpr_cap(link);
+
+	if (status != DC_OK) {
+		status = wake_up_aux_channel(link);
+		if (status == DC_OK)
+			dp_retrieve_lttpr_cap(link);
+		else
+			return false;
+	}
+
+	if (dp_is_lttpr_present(link))
+		configure_lttpr_mode_transparent(link);
+
+	/* Read DP tunneling information. */
+	status = dpcd_get_tunneling_device_data(link);
+
+	dpcd_set_source_specific_data(link);
+	/* Sink may need to configure internals based on vendor, so allow some
+	 * time before proceeding with possibly vendor specific transactions
+	 */
+	msleep(post_oui_delay);
+
+	for (i = 0; i < read_dpcd_retry_cnt; i++) {
+		status = core_link_read_dpcd(
+				link,
+				DP_DPCD_REV,
+				dpcd_data,
+				sizeof(dpcd_data));
+		if (status == DC_OK)
+			break;
+	}
+
+
+	if (status != DC_OK) {
+		dm_error("%s: Read receiver caps dpcd data failed.\n", __func__);
+		return false;
+	}
+
+	if (!dp_is_lttpr_present(link))
+		try_to_configure_aux_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD);
+
+
+	{
+		union training_aux_rd_interval aux_rd_interval;
+
+		aux_rd_interval.raw =
+			dpcd_data[DP_TRAINING_AUX_RD_INTERVAL];
+
+		link->dpcd_caps.ext_receiver_cap_field_present =
+				aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1 ? true:false;
+
+		if (aux_rd_interval.bits.EXT_RECEIVER_CAP_FIELD_PRESENT == 1) {
+			uint8_t ext_cap_data[16];
+
+			memset(ext_cap_data, '\0', sizeof(ext_cap_data));
+			for (i = 0; i < read_dpcd_retry_cnt; i++) {
+				status = core_link_read_dpcd(
+				link,
+				DP_DP13_DPCD_REV,
+				ext_cap_data,
+				sizeof(ext_cap_data));
+				if (status == DC_OK) {
+					memcpy(dpcd_data, ext_cap_data, sizeof(dpcd_data));
+					break;
+				}
+			}
+			if (status != DC_OK)
+				dm_error("%s: Read extend caps data failed, use cap from dpcd 0.\n", __func__);
+		}
+	}
+
+	link->dpcd_caps.dpcd_rev.raw =
+			dpcd_data[DP_DPCD_REV - DP_DPCD_REV];
+
+	if (link->dpcd_caps.ext_receiver_cap_field_present) {
+		for (i = 0; i < read_dpcd_retry_cnt; i++) {
+			status = core_link_read_dpcd(
+					link,
+					DP_DPRX_FEATURE_ENUMERATION_LIST,
+					&dpcd_dprx_data,
+					sizeof(dpcd_dprx_data));
+			if (status == DC_OK)
+				break;
+		}
+
+		link->dpcd_caps.dprx_feature.raw = dpcd_dprx_data;
+
+		if (status != DC_OK)
+			dm_error("%s: Read DPRX caps data failed.\n", __func__);
+	}
+
+	else {
+		link->dpcd_caps.dprx_feature.raw = 0;
+	}
+
+
+	/* Error condition checking...
+	 * It is impossible for Sink to report Max Lane Count = 0.
+	 * It is possible for Sink to report Max Link Rate = 0, if it is
+	 * an eDP device that is reporting specialized link rates in the
+	 * SUPPORTED_LINK_RATE table.
+	 */
+	if (dpcd_data[DP_MAX_LANE_COUNT - DP_DPCD_REV] == 0)
+		return false;
+
+	ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT -
+				 DP_DPCD_REV];
+
+	read_dp_device_vendor_id(link);
+
+	/* TODO - decouple raw mst capability from policy decision */
+	link->dpcd_caps.is_mst_capable = read_is_mst_supported(link);
+
+	get_active_converter_info(ds_port.byte, link);
+
+	dp_wa_power_up_0010FA(link, dpcd_data, sizeof(dpcd_data));
+
+	down_strm_port_count.raw = dpcd_data[DP_DOWN_STREAM_PORT_COUNT -
+				 DP_DPCD_REV];
+
+	link->dpcd_caps.allow_invalid_MSA_timing_param =
+		down_strm_port_count.bits.IGNORE_MSA_TIMING_PARAM;
+
+	link->dpcd_caps.max_ln_count.raw = dpcd_data[
+		DP_MAX_LANE_COUNT - DP_DPCD_REV];
+
+	link->dpcd_caps.max_down_spread.raw = dpcd_data[
+		DP_MAX_DOWNSPREAD - DP_DPCD_REV];
+
+	link->reported_link_cap.lane_count =
+		link->dpcd_caps.max_ln_count.bits.MAX_LANE_COUNT;
+	link->reported_link_cap.link_rate = get_link_rate_from_max_link_bw(
+			dpcd_data[DP_MAX_LINK_RATE - DP_DPCD_REV]);
+	link->reported_link_cap.link_spread =
+		link->dpcd_caps.max_down_spread.bits.MAX_DOWN_SPREAD ?
+		LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED;
+
+	edp_config_cap.raw = dpcd_data[
+		DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV];
+	link->dpcd_caps.panel_mode_edp =
+		edp_config_cap.bits.ALT_SCRAMBLER_RESET;
+	link->dpcd_caps.dpcd_display_control_capable =
+		edp_config_cap.bits.DPCD_DISPLAY_CONTROL_CAPABLE;
+	link->dpcd_caps.channel_coding_cap.raw =
+			dpcd_data[DP_MAIN_LINK_CHANNEL_CODING - DP_DPCD_REV];
+	link->test_pattern_enabled = false;
+	link->compliance_test_state.raw = 0;
+
+	/* read sink count */
+	core_link_read_dpcd(link,
+			DP_SINK_COUNT,
+			&link->dpcd_caps.sink_count.raw,
+			sizeof(link->dpcd_caps.sink_count.raw));
+
+	/* read sink ieee oui */
+	core_link_read_dpcd(link,
+			DP_SINK_OUI,
+			(uint8_t *)(&sink_id),
+			sizeof(sink_id));
+
+	link->dpcd_caps.sink_dev_id =
+			(sink_id.ieee_oui[0] << 16) +
+			(sink_id.ieee_oui[1] << 8) +
+			(sink_id.ieee_oui[2]);
+
+	memmove(
+		link->dpcd_caps.sink_dev_id_str,
+		sink_id.ieee_device_id,
+		sizeof(sink_id.ieee_device_id));
+
+	core_link_read_dpcd(
+		link,
+		DP_SINK_HW_REVISION_START,
+		(uint8_t *)&dp_hw_fw_revision,
+		sizeof(dp_hw_fw_revision));
+
+	link->dpcd_caps.sink_hw_revision =
+		dp_hw_fw_revision.ieee_hw_rev;
+
+	memmove(
+		link->dpcd_caps.sink_fw_revision,
+		dp_hw_fw_revision.ieee_fw_rev,
+		sizeof(dp_hw_fw_revision.ieee_fw_rev));
+
+	/* Quirk for Retina panels: wrong DP_MAX_LINK_RATE */
+	{
+		uint8_t str_mbp_2018[] = { 101, 68, 21, 103, 98, 97 };
+		uint8_t fwrev_mbp_2018[] = { 7, 4 };
+		uint8_t fwrev_mbp_2018_vega[] = { 8, 4 };
+
+		/* We also check for the firmware revision as 16,1 models have an
+		 * identical device id and are incorrectly quirked otherwise.
+		 */
+		if ((link->dpcd_caps.sink_dev_id == 0x0010fa) &&
+		    !memcmp(link->dpcd_caps.sink_dev_id_str, str_mbp_2018,
+			     sizeof(str_mbp_2018)) &&
+		    (!memcmp(link->dpcd_caps.sink_fw_revision, fwrev_mbp_2018,
+			     sizeof(fwrev_mbp_2018)) ||
+		    !memcmp(link->dpcd_caps.sink_fw_revision, fwrev_mbp_2018_vega,
+			     sizeof(fwrev_mbp_2018_vega)))) {
+			link->reported_link_cap.link_rate = LINK_RATE_RBR2;
+		}
+	}
+
+	memset(&link->dpcd_caps.dsc_caps, '\0',
+			sizeof(link->dpcd_caps.dsc_caps));
+	memset(&link->dpcd_caps.fec_cap, '\0', sizeof(link->dpcd_caps.fec_cap));
+	/* Read DSC and FEC sink capabilities if DP revision is 1.4 and up */
+	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14) {
+		status = core_link_read_dpcd(
+				link,
+				DP_FEC_CAPABILITY,
+				&link->dpcd_caps.fec_cap.raw,
+				sizeof(link->dpcd_caps.fec_cap.raw));
+		status = core_link_read_dpcd(
+				link,
+				DP_DSC_SUPPORT,
+				link->dpcd_caps.dsc_caps.dsc_basic_caps.raw,
+				sizeof(link->dpcd_caps.dsc_caps.dsc_basic_caps.raw));
+		if (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) {
+			status = core_link_read_dpcd(
+					link,
+					DP_DSC_BRANCH_OVERALL_THROUGHPUT_0,
+					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.raw,
+					sizeof(link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.raw));
+			DC_LOG_DSC("DSC branch decoder capability is read at link %d", link->link_index);
+			DC_LOG_DSC("\tBRANCH_OVERALL_THROUGHPUT_0 = 0x%02x",
+					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.fields.BRANCH_OVERALL_THROUGHPUT_0);
+			DC_LOG_DSC("\tBRANCH_OVERALL_THROUGHPUT_1 = 0x%02x",
+					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.fields.BRANCH_OVERALL_THROUGHPUT_1);
+			DC_LOG_DSC("\tBRANCH_MAX_LINE_WIDTH 0x%02x",
+					link->dpcd_caps.dsc_caps.dsc_branch_decoder_caps.fields.BRANCH_MAX_LINE_WIDTH);
+		}
+
+		/* Apply work around to disable FEC and DSC for USB4 tunneling in TBT3 compatibility mode
+		 * only if required.
+		 */
+		if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA &&
+				link->dc->debug.dpia_debug.bits.enable_force_tbt3_work_around &&
+				link->dpcd_caps.is_branch_dev &&
+				link->dpcd_caps.branch_dev_id == DP_BRANCH_DEVICE_ID_90CC24 &&
+				link->dpcd_caps.branch_hw_revision == DP_BRANCH_HW_REV_10 &&
+				(link->dpcd_caps.fec_cap.bits.FEC_CAPABLE ||
+				link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT)) {
+			/* A TBT3 device is expected to report no support for FEC or DSC to a USB4 DPIA.
+			 * Clear FEC and DSC capabilities as a work around if that is not the case.
+			 */
+			link->wa_flags.dpia_forced_tbt3_mode = true;
+			memset(&link->dpcd_caps.dsc_caps, '\0', sizeof(link->dpcd_caps.dsc_caps));
+			memset(&link->dpcd_caps.fec_cap, '\0', sizeof(link->dpcd_caps.fec_cap));
+			DC_LOG_DSC("Clear DSC SUPPORT for USB4 link(%d) in TBT3 compatibility mode", link->link_index);
+		} else
+			link->wa_flags.dpia_forced_tbt3_mode = false;
+	}
+
+	if (!dpcd_read_sink_ext_caps(link))
+		link->dpcd_sink_ext_caps.raw = 0;
+
+	if (link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED) {
+		DC_LOG_DP2("128b/132b encoding is supported at link %d", link->link_index);
+
+		core_link_read_dpcd(link,
+				DP_128B132B_SUPPORTED_LINK_RATES,
+				&link->dpcd_caps.dp_128b_132b_supported_link_rates.raw,
+				sizeof(link->dpcd_caps.dp_128b_132b_supported_link_rates.raw));
+		if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR20)
+			link->reported_link_cap.link_rate = LINK_RATE_UHBR20;
+		else if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR13_5)
+			link->reported_link_cap.link_rate = LINK_RATE_UHBR13_5;
+		else if (link->dpcd_caps.dp_128b_132b_supported_link_rates.bits.UHBR10)
+			link->reported_link_cap.link_rate = LINK_RATE_UHBR10;
+		else
+			dm_error("%s: Invalid RX 128b_132b_supported_link_rates\n", __func__);
+		DC_LOG_DP2("128b/132b supported link rates is read at link %d", link->link_index);
+		DC_LOG_DP2("\tmax 128b/132b link rate support is %d.%d GHz",
+				link->reported_link_cap.link_rate / 100,
+				link->reported_link_cap.link_rate % 100);
+
+		core_link_read_dpcd(link,
+				DP_SINK_VIDEO_FALLBACK_FORMATS,
+				&link->dpcd_caps.fallback_formats.raw,
+				sizeof(link->dpcd_caps.fallback_formats.raw));
+		DC_LOG_DP2("sink video fallback format is read at link %d", link->link_index);
+		if (link->dpcd_caps.fallback_formats.bits.dp_1920x1080_60Hz_24bpp_support)
+			DC_LOG_DP2("\t1920x1080@60Hz 24bpp fallback format supported");
+		if (link->dpcd_caps.fallback_formats.bits.dp_1280x720_60Hz_24bpp_support)
+			DC_LOG_DP2("\t1280x720@60Hz 24bpp fallback format supported");
+		if (link->dpcd_caps.fallback_formats.bits.dp_1024x768_60Hz_24bpp_support)
+			DC_LOG_DP2("\t1024x768@60Hz 24bpp fallback format supported");
+		if (link->dpcd_caps.fallback_formats.raw == 0) {
+			DC_LOG_DP2("\tno supported fallback formats, assume 1920x1080@60Hz 24bpp is supported");
+			link->dpcd_caps.fallback_formats.bits.dp_1920x1080_60Hz_24bpp_support = 1;
+		}
+
+		core_link_read_dpcd(link,
+				DP_FEC_CAPABILITY_1,
+				&link->dpcd_caps.fec_cap1.raw,
+				sizeof(link->dpcd_caps.fec_cap1.raw));
+		DC_LOG_DP2("FEC CAPABILITY 1 is read at link %d", link->link_index);
+		if (link->dpcd_caps.fec_cap1.bits.AGGREGATED_ERROR_COUNTERS_CAPABLE)
+			DC_LOG_DP2("\tFEC aggregated error counters are supported");
+	}
+
+	retrieve_cable_id(link);
+	dpcd_write_cable_id_to_dprx(link);
+
+	/* Connectivity log: detection */
+	CONN_DATA_DETECT(link, dpcd_data, sizeof(dpcd_data), "Rx Caps: ");
+
+	return true;
+}
+
+bool detect_dp_sink_caps(struct dc_link *link)
+{
+	return retrieve_link_cap(link);
+}
+
+void detect_edp_sink_caps(struct dc_link *link)
+{
+	uint8_t supported_link_rates[16];
+	uint32_t entry;
+	uint32_t link_rate_in_khz;
+	enum dc_link_rate link_rate = LINK_RATE_UNKNOWN;
+	uint8_t backlight_adj_cap;
+	uint8_t general_edp_cap;
+
+	retrieve_link_cap(link);
+	link->dpcd_caps.edp_supported_link_rates_count = 0;
+	memset(supported_link_rates, 0, sizeof(supported_link_rates));
+
+	/*
+	 * edp_supported_link_rates_count is only valid for eDP v1.4 or higher.
+	 * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h"
+	 */
+	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 &&
+			(link->panel_config.ilr.optimize_edp_link_rate ||
+			link->reported_link_cap.link_rate == LINK_RATE_UNKNOWN)) {
+		// Read DPCD 00010h - 0001Fh 16 bytes at one shot
+		core_link_read_dpcd(link, DP_SUPPORTED_LINK_RATES,
+							supported_link_rates, sizeof(supported_link_rates));
+
+		for (entry = 0; entry < 16; entry += 2) {
+			// DPCD register reports per-lane link rate = 16-bit link rate capability
+			// value X 200 kHz. Need multiplier to find link rate in kHz.
+			link_rate_in_khz = (supported_link_rates[entry+1] * 0x100 +
+										supported_link_rates[entry]) * 200;
+
+			if (link_rate_in_khz != 0) {
+				link_rate = linkRateInKHzToLinkRateMultiplier(link_rate_in_khz);
+				link->dpcd_caps.edp_supported_link_rates[link->dpcd_caps.edp_supported_link_rates_count] = link_rate;
+				link->dpcd_caps.edp_supported_link_rates_count++;
+
+				if (link->reported_link_cap.link_rate < link_rate)
+					link->reported_link_cap.link_rate = link_rate;
+			}
+		}
+	}
+	core_link_read_dpcd(link, DP_EDP_BACKLIGHT_ADJUSTMENT_CAP,
+						&backlight_adj_cap, sizeof(backlight_adj_cap));
+
+	link->dpcd_caps.dynamic_backlight_capable_edp =
+				(backlight_adj_cap & DP_EDP_DYNAMIC_BACKLIGHT_CAP) ? true:false;
+
+	core_link_read_dpcd(link, DP_EDP_GENERAL_CAP_1,
+						&general_edp_cap, sizeof(general_edp_cap));
+
+	link->dpcd_caps.set_power_state_capable_edp =
+				(general_edp_cap & DP_EDP_SET_POWER_CAP) ? true:false;
+
+	dc_link_set_default_brightness_aux(link);
+
+	core_link_read_dpcd(link, DP_EDP_DPCD_REV,
+		&link->dpcd_caps.edp_rev,
+		sizeof(link->dpcd_caps.edp_rev));
+	/*
+	 * PSR is only valid for eDP v1.3 or higher.
+	 */
+	if (link->dpcd_caps.edp_rev >= DP_EDP_13) {
+		core_link_read_dpcd(link, DP_PSR_SUPPORT,
+			&link->dpcd_caps.psr_info.psr_version,
+			sizeof(link->dpcd_caps.psr_info.psr_version));
+		if (link->dpcd_caps.sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8)
+			core_link_read_dpcd(link, DP_FORCE_PSRSU_CAPABILITY,
+						&link->dpcd_caps.psr_info.force_psrsu_cap,
+						sizeof(link->dpcd_caps.psr_info.force_psrsu_cap));
+		core_link_read_dpcd(link, DP_PSR_CAPS,
+			&link->dpcd_caps.psr_info.psr_dpcd_caps.raw,
+			sizeof(link->dpcd_caps.psr_info.psr_dpcd_caps.raw));
+		if (link->dpcd_caps.psr_info.psr_dpcd_caps.bits.Y_COORDINATE_REQUIRED) {
+			core_link_read_dpcd(link, DP_PSR2_SU_Y_GRANULARITY,
+				&link->dpcd_caps.psr_info.psr2_su_y_granularity_cap,
+				sizeof(link->dpcd_caps.psr_info.psr2_su_y_granularity_cap));
+		}
+	}
+
+	/*
+	 * ALPM is only valid for eDP v1.4 or higher.
+	 */
+	if (link->dpcd_caps.dpcd_rev.raw >= DP_EDP_14)
+		core_link_read_dpcd(link, DP_RECEIVER_ALPM_CAP,
+			&link->dpcd_caps.alpm_caps.raw,
+			sizeof(link->dpcd_caps.alpm_caps.raw));
+}
+
+bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap)
+{
+	struct link_encoder *link_enc = NULL;
+
+	if (!max_link_enc_cap) {
+		DC_LOG_ERROR("%s: Could not return max link encoder caps", __func__);
+		return false;
+	}
+
+	link_enc = link_enc_cfg_get_link_enc(link);
+	ASSERT(link_enc);
+
+	if (link_enc && link_enc->funcs->get_max_link_cap) {
+		link_enc->funcs->get_max_link_cap(link_enc, max_link_enc_cap);
+		return true;
+	}
+
+	DC_LOG_ERROR("%s: Max link encoder caps unknown", __func__);
+	max_link_enc_cap->lane_count = 1;
+	max_link_enc_cap->link_rate = 6;
+	return false;
+}
+
+const struct dc_link_settings *dc_link_get_link_cap(
+		const struct dc_link *link)
+{
+	if (link->preferred_link_setting.lane_count != LANE_COUNT_UNKNOWN &&
+			link->preferred_link_setting.link_rate != LINK_RATE_UNKNOWN)
+		return &link->preferred_link_setting;
+	return &link->verified_link_cap;
+}
+
+struct dc_link_settings dp_get_max_link_cap(struct dc_link *link)
+{
+	struct dc_link_settings max_link_cap = {0};
+	enum dc_link_rate lttpr_max_link_rate;
+	enum dc_link_rate cable_max_link_rate;
+	struct link_encoder *link_enc = NULL;
+
+
+	link_enc = link_enc_cfg_get_link_enc(link);
+	ASSERT(link_enc);
+
+	/* get max link encoder capability */
+	if (link_enc)
+		link_enc->funcs->get_max_link_cap(link_enc, &max_link_cap);
+
+	/* Lower link settings based on sink's link cap */
+	if (link->reported_link_cap.lane_count < max_link_cap.lane_count)
+		max_link_cap.lane_count =
+				link->reported_link_cap.lane_count;
+	if (link->reported_link_cap.link_rate < max_link_cap.link_rate)
+		max_link_cap.link_rate =
+				link->reported_link_cap.link_rate;
+	if (link->reported_link_cap.link_spread <
+			max_link_cap.link_spread)
+		max_link_cap.link_spread =
+				link->reported_link_cap.link_spread;
+
+	/* Lower link settings based on cable attributes
+	 * Cable ID is a DP2 feature to identify max certified link rate that
+	 * a cable can carry. The cable identification method requires both
+	 * cable and display hardware support. Since the specs comes late, it is
+	 * anticipated that the first round of DP2 cables and displays may not
+	 * be fully compatible to reliably return cable ID data. Therefore the
+	 * decision of our cable id policy is that if the cable can return non
+	 * zero cable id data, we will take cable's link rate capability into
+	 * account. However if we get zero data, the cable link rate capability
+	 * is considered inconclusive. In this case, we will not take cable's
+	 * capability into account to avoid of over limiting hardware capability
+	 * from users. The max overall link rate capability is still determined
+	 * after actual dp pre-training. Cable id is considered as an auxiliary
+	 * method of determining max link bandwidth capability.
+	 */
+	cable_max_link_rate = get_cable_max_link_rate(link);
+
+	if (!link->dc->debug.ignore_cable_id &&
+			cable_max_link_rate != LINK_RATE_UNKNOWN &&
+			cable_max_link_rate < max_link_cap.link_rate)
+		max_link_cap.link_rate = cable_max_link_rate;
+
+	/* account for lttpr repeaters cap
+	 * notes: repeaters do not snoop in the DPRX Capabilities addresses (3.6.3).
+	 */
+	if (dp_is_lttpr_present(link)) {
+		if (link->dpcd_caps.lttpr_caps.max_lane_count < max_link_cap.lane_count)
+			max_link_cap.lane_count = link->dpcd_caps.lttpr_caps.max_lane_count;
+		lttpr_max_link_rate = get_lttpr_max_link_rate(link);
+
+		if (lttpr_max_link_rate < max_link_cap.link_rate)
+			max_link_cap.link_rate = lttpr_max_link_rate;
+
+		DC_LOG_HW_LINK_TRAINING("%s\n Training with LTTPR,  max_lane count %d max_link rate %d \n",
+						__func__,
+						max_link_cap.lane_count,
+						max_link_cap.link_rate);
+	}
+
+	if (link_dp_get_encoding_format(&max_link_cap) == DP_128b_132b_ENCODING &&
+			link->dc->debug.disable_uhbr)
+		max_link_cap.link_rate = LINK_RATE_HIGH3;
+
+	return max_link_cap;
+}
+
+static bool dp_verify_link_cap(
+	struct dc_link *link,
+	struct dc_link_settings *known_limit_link_setting,
+	int *fail_count)
+{
+	struct dc_link_settings cur_link_settings = {0};
+	struct dc_link_settings max_link_settings = *known_limit_link_setting;
+	bool success = false;
+	bool skip_video_pattern;
+	enum clock_source_id dp_cs_id = get_clock_source_id(link);
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
+	union hpd_irq_data irq_data;
+	struct link_resource link_res;
+
+	memset(&irq_data, 0, sizeof(irq_data));
+	cur_link_settings = max_link_settings;
+
+	/* Grant extended timeout request */
+	if (dp_is_lttpr_present(link) && link->dpcd_caps.lttpr_caps.max_ext_timeout > 0) {
+		uint8_t grant = link->dpcd_caps.lttpr_caps.max_ext_timeout & 0x80;
+
+		core_link_write_dpcd(link, DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT, &grant, sizeof(grant));
+	}
+
+	do {
+		if (!get_temp_dp_link_res(link, &link_res, &cur_link_settings))
+			continue;
+
+		skip_video_pattern = cur_link_settings.link_rate != LINK_RATE_LOW;
+		dp_enable_link_phy(
+				link,
+				&link_res,
+				link->connector_signal,
+				dp_cs_id,
+				&cur_link_settings);
+
+		status = dp_perform_link_training(
+				link,
+				&link_res,
+				&cur_link_settings,
+				skip_video_pattern);
+
+		if (status == LINK_TRAINING_SUCCESS) {
+			success = true;
+			udelay(1000);
+			if (read_hpd_rx_irq_data(link, &irq_data) == DC_OK &&
+					hpd_rx_irq_check_link_loss_status(
+							link,
+							&irq_data))
+				(*fail_count)++;
+
+		} else {
+			(*fail_count)++;
+		}
+		dp_trace_lt_total_count_increment(link, true);
+		dp_trace_lt_result_update(link, status, true);
+		dp_disable_link_phy(link, &link_res, link->connector_signal);
+	} while (!success && decide_fallback_link_setting(link,
+			&max_link_settings, &cur_link_settings, status));
+
+	link->verified_link_cap = success ?
+			cur_link_settings : fail_safe_link_settings;
+	return success;
+}
+
+bool dp_verify_link_cap_with_retries(
+	struct dc_link *link,
+	struct dc_link_settings *known_limit_link_setting,
+	int attempts)
+{
+	int i = 0;
+	bool success = false;
+	int fail_count = 0;
+
+	dp_trace_detect_lt_init(link);
+
+	if (link->link_enc && link->link_enc->features.flags.bits.DP_IS_USB_C &&
+			link->dc->debug.usbc_combo_phy_reset_wa)
+		apply_usbc_combo_phy_reset_wa(link, known_limit_link_setting);
+
+	dp_trace_set_lt_start_timestamp(link, false);
+	for (i = 0; i < attempts; i++) {
+		enum dc_connection_type type = dc_connection_none;
+
+		memset(&link->verified_link_cap, 0,
+				sizeof(struct dc_link_settings));
+		if (!dc_link_detect_sink(link, &type) || type == dc_connection_none) {
+			link->verified_link_cap = fail_safe_link_settings;
+			break;
+		} else if (dp_verify_link_cap(link, known_limit_link_setting,
+				&fail_count) && fail_count == 0) {
+			success = true;
+			break;
+		}
+		msleep(10);
+	}
+
+	dp_trace_lt_fail_count_update(link, fail_count, true);
+	dp_trace_set_lt_end_timestamp(link, true);
+
+	return success;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_capability.h b/drivers/gpu/drm/amd/display/dc/link/link_dp_capability.h
new file mode 100644
index 000000000000..5500744d2e47
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_capability.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DC_LINK_DP_CAPABILITY_H__
+#define __DC_LINK_DP_CAPABILITY_H__
+
+#include "link.h"
+
+bool detect_dp_sink_caps(struct dc_link *link);
+
+void detect_edp_sink_caps(struct dc_link *link);
+
+struct dc_link_settings dp_get_max_link_cap(struct dc_link *link);
+
+
+enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link);
+
+/* Convert PHY repeater count read from DPCD uint8_t. */
+uint8_t dp_parse_lttpr_repeater_count(uint8_t lttpr_repeater_count);
+
+bool dp_is_lttpr_present(struct dc_link *link);
+
+bool is_dp_active_dongle(const struct dc_link *link);
+
+bool is_dp_branch_device(const struct dc_link *link);
+
+bool decide_edp_link_settings_with_dsc(struct dc_link *link,
+		struct dc_link_settings *link_setting,
+		uint32_t req_bw,
+		enum dc_link_rate max_link_rate);
+
+void dpcd_set_source_specific_data(struct dc_link *link);
+
+/*query dpcd for version and mst cap addresses*/
+bool read_is_mst_supported(struct dc_link *link);
+
+bool decide_fallback_link_setting(
+		struct dc_link *link,
+		struct dc_link_settings *max,
+		struct dc_link_settings *cur,
+		enum link_training_result training_result);
+
+
+#endif /* __DC_LINK_DP_CAPABILITY_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
index 422365ac67e9..afe3b21335c2 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
@@ -33,6 +33,7 @@
 #include "link_dp_phy.h"
 #include "link_dpcd.h"
 #include "link_dp_training.h"
+#include "link_dp_capability.h"
 #include "clk_mgr.h"
 #include "resource.h"
 #include "dc_link_dp.h"
@@ -117,7 +118,7 @@ void dp_disable_link_phy_mst(struct dc_link *link,
 
 static inline bool is_immediate_downstream(struct dc_link *link, uint32_t offset)
 {
-	return (dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) ==
+	return (dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) ==
 			offset);
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
index 60db0939492b..e49e0258a1bd 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
@@ -39,6 +39,7 @@
 #include "link_dpcd.h"
 #include "link_dp_trace.h"
 #include "link_dp_phy.h"
+#include "link_dp_capability.h"
 #include "dc_link_dp.h"
 #include "atomfirmware.h"
 #include "link_enc_cfg.h"
@@ -342,7 +343,7 @@ void dp_hw_to_dpcd_lane_settings(
 	uint8_t lane = 0;
 
 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_8b_10b_ENCODING) {
 			dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET =
 					(uint8_t)(hw_lane_settings[lane].VOLTAGE_SWING);
@@ -354,7 +355,7 @@ void dp_hw_to_dpcd_lane_settings(
 			dpcd_lane_settings[lane].bits.MAX_PRE_EMPHASIS_REACHED =
 					(hw_lane_settings[lane].PRE_EMPHASIS ==
 							PRE_EMPHASIS_MAX_LEVEL ? 1 : 0);
-		} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		} else if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_128b_132b_ENCODING) {
 			dpcd_lane_settings[lane].tx_ffe.PRESET_VALUE =
 					hw_lane_settings[lane].FFE_PRESET.settings.level;
@@ -365,7 +366,7 @@ void dp_hw_to_dpcd_lane_settings(
 uint8_t get_dpcd_link_rate(const struct dc_link_settings *link_settings)
 {
 	uint8_t link_rate = 0;
-	enum dp_link_encoding encoding = dp_get_link_encoding_format(link_settings);
+	enum dp_link_encoding encoding = link_dp_get_encoding_format(link_settings);
 
 	if (encoding == DP_128b_132b_ENCODING)
 		switch (link_settings->link_rate) {
@@ -736,7 +737,7 @@ void override_training_settings(
 enum dc_dp_training_pattern decide_cr_training_pattern(
 		const struct dc_link_settings *link_settings)
 {
-	switch (dp_get_link_encoding_format(link_settings)) {
+	switch (link_dp_get_encoding_format(link_settings)) {
 	case DP_8b_10b_ENCODING:
 	default:
 		return DP_TRAINING_PATTERN_SEQUENCE_1;
@@ -757,7 +758,7 @@ enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link,
 	ASSERT(link_enc);
 	enc_caps = &link_enc->features;
 
-	switch (dp_get_link_encoding_format(link_settings)) {
+	switch (link_dp_get_encoding_format(link_settings)) {
 	case DP_8b_10b_ENCODING:
 		if (enc_caps->flags.bits.IS_TPS4_CAPABLE &&
 				rx_caps->max_down_spread.bits.TPS4_SUPPORTED)
@@ -781,7 +782,7 @@ enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link,
 enum lttpr_mode dc_link_decide_lttpr_mode(struct dc_link *link,
 		struct dc_link_settings *link_setting)
 {
-	enum dp_link_encoding encoding = dp_get_link_encoding_format(link_setting);
+	enum dp_link_encoding encoding = link_dp_get_encoding_format(link_setting);
 
 	if (encoding == DP_8b_10b_ENCODING)
 		return dp_decide_8b_10b_lttpr_mode(link);
@@ -801,7 +802,7 @@ void dp_decide_lane_settings(
 	uint32_t lane;
 
 	for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_8b_10b_ENCODING) {
 			hw_lane_settings[lane].VOLTAGE_SWING =
 					(enum dc_voltage_swing)(ln_adjust[lane].bits.
@@ -809,7 +810,7 @@ void dp_decide_lane_settings(
 			hw_lane_settings[lane].PRE_EMPHASIS =
 					(enum dc_pre_emphasis)(ln_adjust[lane].bits.
 							PRE_EMPHASIS_LANE);
-		} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		} else if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_128b_132b_ENCODING) {
 			hw_lane_settings[lane].FFE_PRESET.raw =
 					ln_adjust[lane].tx_ffe.PRESET_VALUE;
@@ -834,9 +835,9 @@ void dp_decide_training_settings(
 		const struct dc_link_settings *link_settings,
 		struct link_training_settings *lt_settings)
 {
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING)
+	if (link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING)
 		decide_8b_10b_training_settings(link, link_settings, lt_settings);
-	else if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING)
+	else if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING)
 		decide_128b_132b_training_settings(link, link_settings, lt_settings);
 }
 
@@ -864,7 +865,7 @@ static enum dc_status configure_lttpr_mode_non_transparent(
 	enum dc_status result = DC_ERROR_UNEXPECTED;
 	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
 
-	enum dp_link_encoding encoding = dp_get_link_encoding_format(&lt_settings->link_settings);
+	enum dp_link_encoding encoding = link_dp_get_encoding_format(&lt_settings->link_settings);
 
 	if (encoding == DP_8b_10b_ENCODING) {
 		DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
@@ -894,7 +895,7 @@ static enum dc_status configure_lttpr_mode_non_transparent(
 		}
 
 		if (encoding == DP_8b_10b_ENCODING) {
-			repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+			repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 			/* Driver does not need to train the first hop. Skip DPCD read and clear
 			 * AUX_RD_INTERVAL for DPTX-to-DPIA hop.
@@ -977,7 +978,7 @@ enum dc_status dpcd_configure_channel_coding(struct dc_link *link,
 		struct link_training_settings *lt_settings)
 {
 	enum dp_link_encoding encoding =
-			dp_get_link_encoding_format(
+			link_dp_get_encoding_format(
 					&lt_settings->link_settings);
 	enum dc_status status;
 
@@ -1190,7 +1191,7 @@ void dpcd_set_lt_pattern_and_lane_settings(
 		size_in_bytes);
 
 	if (is_repeater(lt_settings, offset)) {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_128b_132b_ENCODING)
 			DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
 					" 0x%X TX_FFE_PRESET_VALUE = %x\n",
@@ -1198,7 +1199,7 @@ void dpcd_set_lt_pattern_and_lane_settings(
 					offset,
 					dpcd_base_lt_offset,
 					lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
-		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		else if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_8b_10b_ENCODING)
 		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"
 				" 0x%X VS set = %x PE set = %x max VS Reached = %x  max PE Reached = %x\n",
@@ -1210,13 +1211,13 @@ void dpcd_set_lt_pattern_and_lane_settings(
 			lt_settings->dpcd_lane_settings[0].bits.MAX_SWING_REACHED,
 			lt_settings->dpcd_lane_settings[0].bits.MAX_PRE_EMPHASIS_REACHED);
 	} else {
-		if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_128b_132b_ENCODING)
 			DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X TX_FFE_PRESET_VALUE = %x\n",
 					__func__,
 					dpcd_base_lt_offset,
 					lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE);
-		else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		else if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_8b_10b_ENCODING)
 			DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",
 					__func__,
@@ -1242,7 +1243,7 @@ void dpcd_set_lt_pattern_and_lane_settings(
 			(uint8_t *)(lt_settings->dpcd_lane_settings),
 			size_in_bytes);
 
-	} else if (dp_get_link_encoding_format(&lt_settings->link_settings) ==
+	} else if (link_dp_get_encoding_format(&lt_settings->link_settings) ==
 			DP_128b_132b_ENCODING) {
 		core_link_write_dpcd(
 				link,
@@ -1467,7 +1468,7 @@ enum link_training_result dp_perform_link_training(
 	enum link_training_result status = LINK_TRAINING_SUCCESS;
 	struct link_training_settings lt_settings = {0};
 	enum dp_link_encoding encoding =
-			dp_get_link_encoding_format(link_settings);
+			link_dp_get_encoding_format(link_settings);
 
 	/* decide training settings */
 	dp_decide_training_settings(
@@ -1544,7 +1545,7 @@ bool perform_link_training_with_retries(
 	dp_trace_commit_lt_init(link);
 
 
-	if (dp_get_link_encoding_format(&cur_link_settings) == DP_8b_10b_ENCODING)
+	if (link_dp_get_encoding_format(&cur_link_settings) == DP_8b_10b_ENCODING)
 		/* We need to do this before the link training to ensure the idle
 		 * pattern in SST mode will be sent right after the link training
 		 */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
index f0811557668a..bfabebed5868 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
@@ -31,6 +31,7 @@
 #include "link_dp_training_8b_10b.h"
 #include "link_dpcd.h"
 #include "link_dp_phy.h"
+#include "link_dp_capability.h"
 #include "dc_link_dp.h"
 
 #define DC_LOGGER \
@@ -238,7 +239,7 @@ void decide_128b_132b_training_settings(struct dc_link *link,
 	lt_settings->eq_loop_count_limit = 20;
 	lt_settings->pattern_for_cds = DP_128b_132b_TPS2_CDS;
 	lt_settings->cds_pattern_time = 2500;
-	lt_settings->cds_wait_time_limit = (dp_convert_to_count(
+	lt_settings->cds_wait_time_limit = (dp_parse_lttpr_repeater_count(
 			link->dpcd_caps.lttpr_caps.phy_repeater_cnt) + 1) * 20000;
 	lt_settings->disallow_per_lane_settings = true;
 	lt_settings->lttpr_mode = dp_decide_128b_132b_lttpr_mode(link);
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
index c3eeed9303b3..ec8b619d51c5 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
@@ -30,6 +30,7 @@
 #include "link_dp_training_8b_10b.h"
 #include "link_dpcd.h"
 #include "link_dp_phy.h"
+#include "link_dp_capability.h"
 #include "dc_link_dp.h"
 
 #define DC_LOGGER \
@@ -42,7 +43,7 @@ static int32_t get_cr_training_aux_rd_interval(struct dc_link *link,
 	uint32_t wait_in_micro_secs = 100;
 
 	memset(&training_rd_interval, 0, sizeof(training_rd_interval));
-	if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
+	if (link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
 			link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
 		core_link_read_dpcd(
 				link,
@@ -62,13 +63,13 @@ static uint32_t get_eq_training_aux_rd_interval(
 	union training_aux_rd_interval training_rd_interval;
 
 	memset(&training_rd_interval, 0, sizeof(training_rd_interval));
-	if (dp_get_link_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
+	if (link_dp_get_encoding_format(link_settings) == DP_128b_132b_ENCODING) {
 		core_link_read_dpcd(
 				link,
 				DP_128B132B_TRAINING_AUX_RD_INTERVAL,
 				(uint8_t *)&training_rd_interval,
 				sizeof(training_rd_interval));
-	} else if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
+	} else if (link_dp_get_encoding_format(link_settings) == DP_8b_10b_ENCODING &&
 			link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
 		core_link_read_dpcd(
 				link,
@@ -229,7 +230,7 @@ enum link_training_result perform_8b_10b_clock_recovery_sequence(
 			return LINK_TRAINING_SUCCESS;
 
 		/* 6. max VS reached*/
-		if ((dp_get_link_encoding_format(&lt_settings->link_settings) ==
+		if ((link_dp_get_encoding_format(&lt_settings->link_settings) ==
 				DP_8b_10b_ENCODING) &&
 				dp_is_max_vs_reached(lt_settings))
 			break;
@@ -237,11 +238,11 @@ enum link_training_result perform_8b_10b_clock_recovery_sequence(
 		/* 7. same lane settings*/
 		/* Note: settings are the same for all lanes,
 		 * so comparing first lane is sufficient*/
-		if ((dp_get_link_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING) &&
+		if ((link_dp_get_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING) &&
 				lt_settings->dpcd_lane_settings[0].bits.VOLTAGE_SWING_SET ==
 						dpcd_lane_adjust[0].bits.VOLTAGE_SWING_LANE)
 			retries_cr++;
-		else if ((dp_get_link_encoding_format(&lt_settings->link_settings) == DP_128b_132b_ENCODING) &&
+		else if ((link_dp_get_encoding_format(&lt_settings->link_settings) == DP_128b_132b_ENCODING) &&
 				lt_settings->dpcd_lane_settings[0].tx_ffe.PRESET_VALUE ==
 						dpcd_lane_adjust[0].tx_ffe.PRESET_VALUE)
 			retries_cr++;
@@ -282,7 +283,7 @@ enum link_training_result perform_8b_10b_channel_equalization_sequence(
 	/* Note: also check that TPS4 is a supported feature*/
 	tr_pattern = lt_settings->pattern_for_eq;
 
-	if (is_repeater(lt_settings, offset) && dp_get_link_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING)
+	if (is_repeater(lt_settings, offset) && link_dp_get_encoding_format(&lt_settings->link_settings) == DP_8b_10b_ENCODING)
 		tr_pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
 
 	dp_set_hw_training_pattern(link, link_res, tr_pattern, offset);
@@ -371,7 +372,7 @@ enum link_training_result dp_perform_8b_10b_link_training(
 		/* 2. perform link training (set link training done
 		 *  to false is done as well)
 		 */
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+		repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 		for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
 				repeater_id--) {
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c
index 7f005d053595..cf47db1c2141 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.c
@@ -39,6 +39,7 @@
 #include "dmub/inc/dmub_cmd.h"
 #include "link_dpcd.h"
 #include "link_dp_training_8b_10b.h"
+#include "link_dp_capability.h"
 #include "dc_dmub_srv.h"
 #define DC_LOGGER \
 	link->ctx->logger
@@ -300,7 +301,7 @@ static enum link_training_result dpia_training_cr_non_transparent(
 	uint8_t set_cfg_data;
 	enum dpia_set_config_ts ts;
 
-	repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+	repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 	/* Cap of LINK_TRAINING_MAX_CR_RETRY attempts at clock recovery.
 	 * Fix inherited from perform_clock_recovery_sequence() -
@@ -631,7 +632,7 @@ static enum link_training_result dpia_training_eq_non_transparent(
 	else
 		tr_pattern = DP_TRAINING_PATTERN_SEQUENCE_4;
 
-	repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+	repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 	for (retries_eq = 0; retries_eq < LINK_TRAINING_MAX_RETRY_COUNT; retries_eq++) {
 
@@ -900,7 +901,7 @@ static enum link_training_result dpia_training_end(
 
 	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
 
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+		repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 		if (hop == repeater_cnt) { /* DPTX-to-DPIA */
 			/* Send SET_CONFIG(SET_TRAINING:0xff) to notify DPOA that
@@ -1004,7 +1005,7 @@ enum link_training_result dc_link_dpia_perform_link_training(
 		return result;
 
 	if (lt_settings.lttpr_mode == LTTPR_MODE_NON_TRANSPARENT)
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+		repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 	/* Train each hop in turn starting with the one closest to DPTX.
 	 * In transparent or non-LTTPR mode, train only the final hop (DPRX).
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
index 468ac5a2557b..860b5eea89aa 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
@@ -35,6 +35,7 @@
 #include "link_dp_training_8b_10b.h"
 #include "link_dpcd.h"
 #include "link_dp_phy.h"
+#include "link_dp_capability.h"
 #include "dc_link_dp.h"
 
 #define DC_LOGGER \
@@ -46,7 +47,7 @@ void dp_fixed_vs_pe_read_lane_adjust(
 {
 	const uint8_t vendor_lttpr_write_data_vs[3] = {0x0, 0x53, 0x63};
 	const uint8_t vendor_lttpr_write_data_pe[3] = {0x0, 0x54, 0x63};
-	const uint8_t offset = dp_convert_to_count(
+	const uint8_t offset = dp_parse_lttpr_repeater_count(
 			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 	uint32_t vendor_lttpr_write_address = 0xF004F;
 	uint32_t vendor_lttpr_read_address = 0xF0053;
@@ -95,7 +96,7 @@ void dp_fixed_vs_pe_set_retimer_lane_settings(
 	const union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX],
 	uint8_t lane_count)
 {
-	const uint8_t offset = dp_convert_to_count(
+	const uint8_t offset = dp_parse_lttpr_repeater_count(
 			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 	const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF};
 	uint32_t vendor_lttpr_write_address = 0xF004F;
@@ -180,7 +181,7 @@ static enum link_training_result perform_fixed_vs_pe_nontransparent_training_seq
 		/* 2. perform link training (set link training done
 		 *  to false is done as well)
 		 */
-		repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
+		repeater_cnt = dp_parse_lttpr_repeater_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 
 		for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS);
 				repeater_id--) {
@@ -229,7 +230,7 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence(
 	struct link_training_settings *lt_settings)
 {
 	const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF};
-	const uint8_t offset = dp_convert_to_count(
+	const uint8_t offset = dp_parse_lttpr_repeater_count(
 			link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
 	const uint8_t vendor_lttpr_write_data_intercept_en[4] = {0x1, 0x55, 0x63, 0x0};
 	const uint8_t vendor_lttpr_write_data_intercept_dis[4] = {0x1, 0x55, 0x63, 0x68};
@@ -245,7 +246,7 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence(
 	uint8_t rate;
 
 	/* Only 8b/10b is supported */
-	ASSERT(dp_get_link_encoding_format(&lt_settings->link_settings) ==
+	ASSERT(link_dp_get_encoding_format(&lt_settings->link_settings) ==
 			DP_8b_10b_ENCODING);
 
 	if (lt_settings->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) {
-- 
2.39.0

[PATCH 22/37] Revert "drm/amd/display: Demote Error Level When ODM Transition Supported"

[Rodrigo Siqueira]

From: Aurabindo Pillai <aurabindo.pillai@amd.com>

This reverts commit 08f4ff51e7667a473ae3d5435942a9dfda5953c4.

Reverting to put in a better solution which does not involve checking
DCN version.

Reviewed-by: Dillon Varone <Dillon.Varone@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index efbfb880f390..91d56a38a829 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -3811,8 +3811,6 @@ void check_syncd_pipes_for_disabled_master_pipe(struct dc *dc,
 	int i;
 	struct pipe_ctx *pipe_ctx, *pipe_ctx_check;
 
-	DC_LOGGER_INIT(dc->ctx->logger);
-
 	pipe_ctx = &context->res_ctx.pipe_ctx[disabled_master_pipe_idx];
 	if ((GET_PIPE_SYNCD_FROM_PIPE(pipe_ctx) != disabled_master_pipe_idx) ||
 		!IS_PIPE_SYNCD_VALID(pipe_ctx))
@@ -3823,16 +3821,9 @@ void check_syncd_pipes_for_disabled_master_pipe(struct dc *dc,
 		pipe_ctx_check = &context->res_ctx.pipe_ctx[i];
 
 		if ((GET_PIPE_SYNCD_FROM_PIPE(pipe_ctx_check) == disabled_master_pipe_idx) &&
-			IS_PIPE_SYNCD_VALID(pipe_ctx_check) && (i != disabled_master_pipe_idx)) {
-			/* On dcn32, this error isn't fatal since hw supports odm transition in fast update*/
-			if (dc->ctx->dce_version == DCN_VERSION_3_2 ||
-					dc->ctx->dce_version == DCN_VERSION_3_21)
-				DC_LOG_DEBUG("DC: pipe_idx[%d] syncd with disabled master pipe_idx[%d]\n",
-					i, disabled_master_pipe_idx);
-			else
-				DC_ERR("DC: Failure: pipe_idx[%d] syncd with disabled master pipe_idx[%d]\n",
-					i, disabled_master_pipe_idx);
-		}
+			IS_PIPE_SYNCD_VALID(pipe_ctx_check) && (i != disabled_master_pipe_idx))
+			DC_ERR("DC: Failure: pipe_idx[%d] syncd with disabled master pipe_idx[%d]\n",
+				i, disabled_master_pipe_idx);
 	}
 }
 
-- 
2.39.0

[PATCH 23/37] drm/amd/display: fix an error check condition for synced pipes

[Rodrigo Siqueira]

From: Aurabindo Pillai <aurabindo.pillai@amd.com>

Checking for disabled master pipe on a timing synchronized pipe is
incorrect in the case of ODM combine. This case is acceptable as long as
the disabled master pipe is part of the ODM tree. Skip printing error
message if this condition holds true.

Reviewed-by: Dillon Varone <Dillon.Varone@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 91d56a38a829..a5b5f8592c1b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -3821,9 +3821,20 @@ void check_syncd_pipes_for_disabled_master_pipe(struct dc *dc,
 		pipe_ctx_check = &context->res_ctx.pipe_ctx[i];
 
 		if ((GET_PIPE_SYNCD_FROM_PIPE(pipe_ctx_check) == disabled_master_pipe_idx) &&
-			IS_PIPE_SYNCD_VALID(pipe_ctx_check) && (i != disabled_master_pipe_idx))
+		    IS_PIPE_SYNCD_VALID(pipe_ctx_check) && (i != disabled_master_pipe_idx)) {
+			struct pipe_ctx *first_pipe = pipe_ctx_check;
+
+			while (first_pipe->prev_odm_pipe)
+				first_pipe = first_pipe->prev_odm_pipe;
+			/* When ODM combine is enabled, this case is expected. If the disabled pipe
+			 * is part of the ODM tree, then we should not print an error.
+			 * */
+			if (first_pipe->pipe_idx == disabled_master_pipe_idx)
+				continue;
+
 			DC_ERR("DC: Failure: pipe_idx[%d] syncd with disabled master pipe_idx[%d]\n",
-				i, disabled_master_pipe_idx);
+				   i, disabled_master_pipe_idx);
+		}
 	}
 }
 
-- 
2.39.0

[PATCH 24/37] drm/amd/display: Optimize link power-down when link powered externally

[Rodrigo Siqueira]

From: Tony Tascioglu <tony.tascioglu@amd.com>

[Why]
When an eDP panel is powered externally by a different GPU, we don't need
to wait for hardware sequencing delays when powering down a link, as the
display is not dependent on the GPU being powered down.

[How]
This commit adds a variable 'link_powered_externally' to indicate when a
link is being powered by another GPU.

Reviewed-by: Felipe Clark <felipe.clark@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Tony Tascioglu <tony.tascioglu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c |  5 +++--
 .../gpu/drm/amd/display/dc/bios/command_table2.c   | 14 ++++++++++----
 .../gpu/drm/amd/display/dc/bios/command_table2.h   |  3 ++-
 drivers/gpu/drm/amd/display/dc/dc_bios_types.h     |  3 ++-
 drivers/gpu/drm/amd/display/dc/dc_link.h           |  2 ++
 .../amd/display/dc/dce110/dce110_hw_sequencer.c    | 14 ++++++++------
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h    |  3 ++-
 7 files changed, 29 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index 8ca50c088858..9f11dcf67c28 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -1697,14 +1697,15 @@ static enum bp_result bios_parser_enable_disp_power_gating(
 static enum bp_result bios_parser_enable_lvtma_control(
 	struct dc_bios *dcb,
 	uint8_t uc_pwr_on,
-	uint8_t panel_instance)
+	uint8_t panel_instance,
+	uint8_t bypass_powerdown_wait)
 {
 	struct bios_parser *bp = BP_FROM_DCB(dcb);
 
 	if (!bp->cmd_tbl.enable_lvtma_control)
 		return BP_RESULT_FAILURE;
 
-	return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on, panel_instance);
+	return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on, panel_instance, bypass_powerdown_wait);
 }
 
 static bool bios_parser_is_accelerated_mode(
diff --git a/drivers/gpu/drm/amd/display/dc/bios/command_table2.c b/drivers/gpu/drm/amd/display/dc/bios/command_table2.c
index f52f7ff7ead4..91adebc5c5b7 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/command_table2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/command_table2.c
@@ -986,7 +986,8 @@ static unsigned int get_smu_clock_info_v3_1(struct bios_parser *bp, uint8_t id)
 static enum bp_result enable_lvtma_control(
 	struct bios_parser *bp,
 	uint8_t uc_pwr_on,
-	uint8_t panel_instance);
+	uint8_t panel_instance,
+	uint8_t bypass_powerdown_wait);
 
 static void init_enable_lvtma_control(struct bios_parser *bp)
 {
@@ -998,7 +999,8 @@ static void init_enable_lvtma_control(struct bios_parser *bp)
 static void enable_lvtma_control_dmcub(
 	struct dc_dmub_srv *dmcub,
 	uint8_t uc_pwr_on,
-	uint8_t panel_instance)
+	uint8_t panel_instance,
+	uint8_t bypass_powerdown_wait)
 {
 
 	union dmub_rb_cmd cmd;
@@ -1012,6 +1014,8 @@ static void enable_lvtma_control_dmcub(
 			uc_pwr_on;
 	cmd.lvtma_control.data.panel_inst =
 			panel_instance;
+	cmd.lvtma_control.data.bypass_powerdown_wait =
+			bypass_powerdown_wait;
 	dc_dmub_srv_cmd_queue(dmcub, &cmd);
 	dc_dmub_srv_cmd_execute(dmcub);
 	dc_dmub_srv_wait_idle(dmcub);
@@ -1021,7 +1025,8 @@ static void enable_lvtma_control_dmcub(
 static enum bp_result enable_lvtma_control(
 	struct bios_parser *bp,
 	uint8_t uc_pwr_on,
-	uint8_t panel_instance)
+	uint8_t panel_instance,
+	uint8_t bypass_powerdown_wait)
 {
 	enum bp_result result = BP_RESULT_FAILURE;
 
@@ -1029,7 +1034,8 @@ static enum bp_result enable_lvtma_control(
 	    bp->base.ctx->dc->debug.dmub_command_table) {
 		enable_lvtma_control_dmcub(bp->base.ctx->dmub_srv,
 				uc_pwr_on,
-				panel_instance);
+				panel_instance,
+				bypass_powerdown_wait);
 		return BP_RESULT_OK;
 	}
 	return result;
diff --git a/drivers/gpu/drm/amd/display/dc/bios/command_table2.h b/drivers/gpu/drm/amd/display/dc/bios/command_table2.h
index be060b4b87db..acb7cc69f699 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/command_table2.h
+++ b/drivers/gpu/drm/amd/display/dc/bios/command_table2.h
@@ -96,7 +96,8 @@ struct cmd_tbl {
 			struct bios_parser *bp, uint8_t id);
 	enum bp_result (*enable_lvtma_control)(struct bios_parser *bp,
 			uint8_t uc_pwr_on,
-			uint8_t panel_instance);
+			uint8_t panel_instance,
+			uint8_t bypass_powerdown_wait);
 };
 
 void dal_firmware_parser_init_cmd_tbl(struct bios_parser *bp);
diff --git a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
index 260ac4458870..07d996c992ed 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
@@ -140,7 +140,8 @@ struct dc_vbios_funcs {
 	enum bp_result (*enable_lvtma_control)(
 		struct dc_bios *bios,
 		uint8_t uc_pwr_on,
-		uint8_t panel_instance);
+		uint8_t panel_instance,
+		uint8_t bypass_powerdown_wait);
 
 	enum bp_result (*get_soc_bb_info)(
 		struct dc_bios *dcb,
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 63fe60dd3ea3..48f6a5b09336 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -294,6 +294,8 @@ struct dc_link {
 
 	struct gpio *hpd_gpio;
 	enum dc_link_fec_state fec_state;
+	bool link_powered_externally;	// Used to bypass hardware sequencing delays when panel is powered down forcibly
+
 	struct dc_panel_config panel_config;
 	struct phy_state phy_state;
 };
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 94be3ffcdea0..ef5afd2a5cf7 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -875,14 +875,16 @@ void dce110_edp_power_control(
 
 		if (ctx->dc->ctx->dmub_srv &&
 				ctx->dc->debug.dmub_command_table) {
-			if (cntl.action == TRANSMITTER_CONTROL_POWER_ON)
+
+			if (cntl.action == TRANSMITTER_CONTROL_POWER_ON) {
 				bp_result = ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
 						LVTMA_CONTROL_POWER_ON,
-						panel_instance);
-			else
+						panel_instance, link->link_powered_externally);
+			} else {
 				bp_result = ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
 						LVTMA_CONTROL_POWER_OFF,
-						panel_instance);
+						panel_instance, link->link_powered_externally);
+			}
 		}
 
 		bp_result = link_transmitter_control(ctx->dc_bios, &cntl);
@@ -1025,11 +1027,11 @@ void dce110_edp_backlight_control(
 		if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON)
 			ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
 					LVTMA_CONTROL_LCD_BLON,
-					panel_instance);
+					panel_instance, 0);
 		else
 			ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
 					LVTMA_CONTROL_LCD_BLOFF,
-					panel_instance);
+					panel_instance, 0);
 	}
 
 	link_transmitter_control(ctx->dc_bios, &cntl);
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 328978ec6814..b3acdb53875c 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -3111,7 +3111,8 @@ struct dmub_rb_cmd_panel_cntl {
  */
 struct dmub_cmd_lvtma_control_data {
 	uint8_t uc_pwr_action; /**< LVTMA_ACTION */
-	uint8_t reserved_0[3]; /**< For future use */
+	uint8_t bypass_powerdown_wait;
+	uint8_t reserved_0[2];
 	uint8_t panel_inst; /**< LVTMA control instance */
 	uint8_t reserved_1[3]; /**< For future use */
 };
-- 
2.39.0

[PATCH 25/37] drm/amd/display: Remove unused code

[Rodrigo Siqueira]

Remove some code that is never used from freesync file.

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
---
 .../amd/display/modules/freesync/freesync.c   | 44 -------------------
 1 file changed, 44 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index c2e00f7b8381..e61cfce9f77c 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -898,35 +898,9 @@ static void build_vrr_infopacket_v2(enum signal_type signal,
 
 	infopacket->valid = true;
 }
-#ifndef TRIM_FSFT
-static void build_vrr_infopacket_fast_transport_data(
-	bool ftActive,
-	unsigned int ftOutputRate,
-	struct dc_info_packet *infopacket)
-{
-	/* PB9 : bit7 - fast transport Active*/
-	unsigned char activeBit = (ftActive) ? 1 << 7 : 0;
-
-	infopacket->sb[1] &= ~activeBit;  //clear bit
-	infopacket->sb[1] |=  activeBit;  //set bit
-
-	/* PB13 : Target Output Pixel Rate [kHz] - bits 7:0  */
-	infopacket->sb[13] = ftOutputRate & 0xFF;
-
-	/* PB14 : Target Output Pixel Rate [kHz] - bits 15:8  */
-	infopacket->sb[14] = (ftOutputRate >> 8) & 0xFF;
-
-	/* PB15 : Target Output Pixel Rate [kHz] - bits 23:16  */
-	infopacket->sb[15] = (ftOutputRate >> 16) & 0xFF;
-
-}
-#endif
 
 static void build_vrr_infopacket_v3(enum signal_type signal,
 		const struct mod_vrr_params *vrr,
-#ifndef TRIM_FSFT
-		bool ftActive, unsigned int ftOutputRate,
-#endif
 		enum color_transfer_func app_tf,
 		struct dc_info_packet *infopacket)
 {
@@ -937,13 +911,6 @@ static void build_vrr_infopacket_v3(enum signal_type signal,
 
 	build_vrr_infopacket_fs2_data(app_tf, infopacket);
 
-#ifndef TRIM_FSFT
-	build_vrr_infopacket_fast_transport_data(
-			ftActive,
-			ftOutputRate,
-			infopacket);
-#endif
-
 	build_vrr_infopacket_checksum(&payload_size, infopacket);
 
 	infopacket->valid = true;
@@ -985,18 +952,7 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
 
 	switch (packet_type) {
 	case PACKET_TYPE_FS_V3:
-#ifndef TRIM_FSFT
-		// always populate with pixel rate.
-		build_vrr_infopacket_v3(
-				stream->signal, vrr,
-				stream->timing.flags.FAST_TRANSPORT,
-				(stream->timing.flags.FAST_TRANSPORT) ?
-						stream->timing.fast_transport_output_rate_100hz :
-						stream->timing.pix_clk_100hz,
-				app_tf, infopacket);
-#else
 		build_vrr_infopacket_v3(stream->signal, vrr, app_tf, infopacket);
-#endif
 		break;
 	case PACKET_TYPE_FS_V2:
 		build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket, stream->freesync_on_desktop);
-- 
2.39.0

[PATCH 26/37] drm/amd/display: set active bit for desktop with VSDBv3

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

When using freesync on desktop, need to set freesync active bit for AMD
VSDBv3 infopacket.

Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../amd/display/modules/freesync/freesync.c   | 20 +++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index e61cfce9f77c..315da61ee897 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -616,7 +616,8 @@ static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr,
 }
 
 static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
-		struct dc_info_packet *infopacket)
+		struct dc_info_packet *infopacket,
+		bool freesync_on_desktop)
 {
 	unsigned int min_refresh;
 	unsigned int max_refresh;
@@ -649,9 +650,15 @@ static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
 		infopacket->sb[6] |= 0x02;
 
 	/* PB6 = [Bit 2 = FreeSync Active] */
-	if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
+	if (freesync_on_desktop) {
+		if (vrr->state != VRR_STATE_DISABLED &&
+			vrr->state != VRR_STATE_UNSUPPORTED)
+			infopacket->sb[6] |= 0x04;
+	} else {
+		if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
 			vrr->state == VRR_STATE_ACTIVE_FIXED)
-		infopacket->sb[6] |= 0x04;
+			infopacket->sb[6] |= 0x04;
+	}
 
 	min_refresh = (vrr->min_refresh_in_uhz + 500000) / 1000000;
 	max_refresh = (vrr->max_refresh_in_uhz + 500000) / 1000000;
@@ -902,12 +909,13 @@ static void build_vrr_infopacket_v2(enum signal_type signal,
 static void build_vrr_infopacket_v3(enum signal_type signal,
 		const struct mod_vrr_params *vrr,
 		enum color_transfer_func app_tf,
-		struct dc_info_packet *infopacket)
+		struct dc_info_packet *infopacket,
+		bool freesync_on_desktop)
 {
 	unsigned int payload_size = 0;
 
 	build_vrr_infopacket_header_v3(signal, infopacket, &payload_size);
-	build_vrr_infopacket_data_v3(vrr, infopacket);
+	build_vrr_infopacket_data_v3(vrr, infopacket, freesync_on_desktop);
 
 	build_vrr_infopacket_fs2_data(app_tf, infopacket);
 
@@ -952,7 +960,7 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
 
 	switch (packet_type) {
 	case PACKET_TYPE_FS_V3:
-		build_vrr_infopacket_v3(stream->signal, vrr, app_tf, infopacket);
+		build_vrr_infopacket_v3(stream->signal, vrr, app_tf, infopacket, stream->freesync_on_desktop);
 		break;
 	case PACKET_TYPE_FS_V2:
 		build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket, stream->freesync_on_desktop);
-- 
2.39.0

[PATCH 27/37] drm/amd/display: Add extra mblk for DCC

[Rodrigo Siqueira]

From: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>

[Why]
DCC meta was found to be detached from usable pixel data. Due to this
DCC meta and the end of the fetched part of the frame will be on not
be on the same mblk. Furthermore if the meta is not aligned to the mblk
size, then we require an extra mblk in MALL to account for this.

[How]
Always add an additional mblk when DCC is enabled for detachment and
misalignment.

Reviewed-by: Dillon Varone <Dillon.Varone@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>
---
 .../display/dc/dml/dcn32/display_mode_vba_util_32.c    | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
index a089be99b2d0..0932f49cd819 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
@@ -1833,15 +1833,15 @@ void dml32_CalculateSurfaceSizeInMall(
 			}
 			if (DCCEnable[k] == true) {
 				SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-						dml_min(dml_ceil(DCCMetaPitchY[k], 8 * Read256BytesBlockWidthY[k]),
+						(dml_min(dml_ceil(DCCMetaPitchY[k], 8 * Read256BytesBlockWidthY[k]),
 							dml_floor(ViewportXStartY[k] + ViewportWidthY[k] + 8 *
 							Read256BytesBlockWidthY[k] - 1, 8 * Read256BytesBlockWidthY[k])
 							- dml_floor(ViewportXStartY[k], 8 * Read256BytesBlockWidthY[k]))
 							* dml_min(dml_ceil(SurfaceHeightY[k], 8 *
 							Read256BytesBlockHeightY[k]), dml_floor(ViewportYStartY[k] +
 							ViewportHeightY[k] + 8 * Read256BytesBlockHeightY[k] - 1, 8 *
-							Read256BytesBlockHeightY[k]) - dml_floor(ViewportYStartY[k], 8
-							* Read256BytesBlockHeightY[k])) * BytesPerPixelY[k] / 256;
+							Read256BytesBlockHeightY[k]) - dml_floor(ViewportYStartY[k], 8 *
+							Read256BytesBlockHeightY[k])) * BytesPerPixelY[k] / 256) + (64 * 1024);
 				if (Read256BytesBlockWidthC[k] > 0) {
 					SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
 							dml_min(dml_ceil(DCCMetaPitchC[k], 8 *
@@ -1877,12 +1877,12 @@ void dml32_CalculateSurfaceSizeInMall(
 			}
 			if (DCCEnable[k] == true) {
 				SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-						dml_ceil(dml_min(DCCMetaPitchY[k], ViewportWidthY[k] + 8 *
+						(dml_ceil(dml_min(DCCMetaPitchY[k], ViewportWidthY[k] + 8 *
 								Read256BytesBlockWidthY[k] - 1), 8 *
 								Read256BytesBlockWidthY[k]) *
 						dml_ceil(dml_min(SurfaceHeightY[k], ViewportHeightY[k] + 8 *
 								Read256BytesBlockHeightY[k] - 1), 8 *
-								Read256BytesBlockHeightY[k]) * BytesPerPixelY[k] / 256;
+								Read256BytesBlockHeightY[k]) * BytesPerPixelY[k] / 256) + (64 * 1024);
 
 				if (Read256BytesBlockWidthC[k] > 0) {
 					SurfaceSizeInMALL[k] = SurfaceSizeInMALL[k] +
-- 
2.39.0

[PATCH 28/37] drm/amd/display: Remove DISPCLK dentist programming for dcn32

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

[WHY?]
For dcn32, SMU handles DISPCLK dentist programming.

[HOW?]
Only use calls to SMU to set DISPCLK.

Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 .../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c  | 96 ++++++++++++++++++-
 1 file changed, 91 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
index 791a788c52f2..352c977d1495 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
@@ -256,6 +256,94 @@ static void dcn32_update_dppclk_dispclk_freq(struct clk_mgr_internal *clk_mgr, s
 	}
 }
 
+static void dcn32_update_clocks_update_dentist(
+		struct clk_mgr_internal *clk_mgr,
+		struct dc_state *context,
+		uint32_t old_dispclk_khz)
+{
+	uint32_t new_disp_divider = 0;
+	uint32_t old_disp_divider = 0;
+	uint32_t new_dispclk_wdivider = 0;
+	uint32_t old_dispclk_wdivider = 0;
+	uint32_t i;
+
+	if (old_dispclk_khz == 0 || clk_mgr->base.clks.dispclk_khz == 0)
+		return;
+
+	new_disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR
+			* clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dispclk_khz;
+	old_disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR
+			* clk_mgr->base.dentist_vco_freq_khz / old_dispclk_khz;
+
+	new_dispclk_wdivider = dentist_get_did_from_divider(new_disp_divider);
+	old_dispclk_wdivider = dentist_get_did_from_divider(old_disp_divider);
+
+	/* When changing divider to or from 127, some extra programming is required to prevent corruption */
+	if (old_dispclk_wdivider == 127 && new_dispclk_wdivider != 127) {
+		for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) {
+			struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
+			uint32_t fifo_level;
+			struct dccg *dccg = clk_mgr->base.ctx->dc->res_pool->dccg;
+			struct stream_encoder *stream_enc = pipe_ctx->stream_res.stream_enc;
+			int32_t N;
+			int32_t j;
+
+			if (!pipe_ctx->stream)
+				continue;
+			/* Virtual encoders don't have this function */
+			if (!stream_enc->funcs->get_fifo_cal_average_level)
+				continue;
+			fifo_level = stream_enc->funcs->get_fifo_cal_average_level(
+					stream_enc);
+			N = fifo_level / 4;
+			dccg->funcs->set_fifo_errdet_ovr_en(
+					dccg,
+					true);
+			for (j = 0; j < N - 4; j++)
+				dccg->funcs->otg_drop_pixel(
+						dccg,
+						pipe_ctx->stream_res.tg->inst);
+			dccg->funcs->set_fifo_errdet_ovr_en(
+					dccg,
+					false);
+		}
+	} else if (new_dispclk_wdivider == 127 && old_dispclk_wdivider != 127) {
+		/* request clock with 126 divider first */
+		uint32_t temp_disp_divider = dentist_get_divider_from_did(126);
+		uint32_t temp_dispclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz) / temp_disp_divider;
+
+		if (clk_mgr->smu_present)
+			dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(temp_dispclk_khz));
+
+		for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) {
+			struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
+			struct dccg *dccg = clk_mgr->base.ctx->dc->res_pool->dccg;
+			struct stream_encoder *stream_enc = pipe_ctx->stream_res.stream_enc;
+			uint32_t fifo_level;
+			int32_t N;
+			int32_t j;
+
+			if (!pipe_ctx->stream)
+				continue;
+			/* Virtual encoders don't have this function */
+			if (!stream_enc->funcs->get_fifo_cal_average_level)
+				continue;
+			fifo_level = stream_enc->funcs->get_fifo_cal_average_level(
+					stream_enc);
+			N = fifo_level / 4;
+			dccg->funcs->set_fifo_errdet_ovr_en(dccg, true);
+			for (j = 0; j < 12 - N; j++)
+				dccg->funcs->otg_add_pixel(dccg,
+						pipe_ctx->stream_res.tg->inst);
+			dccg->funcs->set_fifo_errdet_ovr_en(dccg, false);
+		}
+	}
+
+	/* do requested DISPCLK updates*/
+	if (clk_mgr->smu_present)
+		dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(clk_mgr->base.clks.dispclk_khz));
+}
+
 static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base,
 			struct dc_state *context,
 			bool safe_to_lower)
@@ -274,6 +362,7 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base,
 	bool p_state_change_support;
 	bool fclk_p_state_change_support;
 	int total_plane_count;
+	int old_dispclk_khz = clk_mgr_base->clks.dispclk_khz;
 
 	if (dc->work_arounds.skip_clock_update)
 		return;
@@ -397,9 +486,6 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base,
 	if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
 		clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
 
-		if (clk_mgr->smu_present)
-			dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dispclk_khz));
-
 		update_dispclk = true;
 	}
 
@@ -419,13 +505,13 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base,
 		if (dpp_clock_lowered) {
 			/* if clock is being lowered, increase DTO before lowering refclk */
 			dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
-			dcn20_update_clocks_update_dentist(clk_mgr, context);
+			dcn32_update_clocks_update_dentist(clk_mgr, context, old_dispclk_khz);
 			if (clk_mgr->smu_present)
 				dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DPPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dppclk_khz));
 		} else {
 			/* if clock is being raised, increase refclk before lowering DTO */
 			if (update_dppclk || update_dispclk)
-				dcn20_update_clocks_update_dentist(clk_mgr, context);
+				dcn32_update_clocks_update_dentist(clk_mgr, context, old_dispclk_khz);
 			/* There is a check inside dcn20_update_clocks_update_dpp_dto which ensures
 			 * that we do not lower dto when it is not safe to lower. We do not need to
 			 * compare the current and new dppclk before calling this function.
-- 
2.39.0

[PATCH 29/37] drm/amd/display: contional remove disable dig_fifo when blank

[Rodrigo Siqueira]

From: Charlene Liu <Charlene.Liu@amd.com>

keep dig_fifo enable for test pattern generation.

Reviewed-by: Chris Park <Chris.Park@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc.h                            | 1 +
 .../gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c  | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 72963617553e..53f449fa2b71 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -873,6 +873,7 @@ struct dc_debug_options {
 	unsigned int dsc_delay_factor_wa_x1000;
 	unsigned int min_prefetch_in_strobe_ns;
 	bool disable_unbounded_requesting;
+	bool dig_fifo_off_in_blank;
 };
 
 struct gpu_info_soc_bounding_box_v1_0;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
index 9c9875368bea..67f4589f3e23 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
@@ -281,7 +281,8 @@ static void enc314_stream_encoder_dp_blank(
 	enc1_stream_encoder_dp_blank(link, enc);
 
 	/* Disable FIFO after the DP vid stream is disabled to avoid corruption. */
-	enc314_disable_fifo(enc);
+	if (enc->ctx->dc->debug.dig_fifo_off_in_blank)
+		enc314_disable_fifo(enc);
 }
 
 static void enc314_stream_encoder_dp_unblank(
-- 
2.39.0

[PATCH 30/37] drm/amd/display: Skip backlight control delay on external powered links

[Rodrigo Siqueira]

From: Tony Tascioglu <tony.tascioglu@amd.com>

[Why]
When an eDP panel is powered externally from a different GPU, we can avoid
waiting for hardware sequencing delays when switching the backlight on/off
as the display backlight is no longer powered by the original source.

[How]
This commit extends the 'link_powered_externally' variable to allow
bypassing hardware delays for additional backlight commands and force the
backlight on/off when a link is powered by another GPU.

Reviewed-by: Felipe Clark <felipe.clark@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Tony Tascioglu <tony.tascioglu@amd.com>
---
 drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c   |  4 ++--
 drivers/gpu/drm/amd/display/dc/bios/command_table2.c | 12 ++++++------
 drivers/gpu/drm/amd/display/dc/bios/command_table2.h |  2 +-
 drivers/gpu/drm/amd/display/dc/dc_bios_types.h       |  2 +-
 .../drm/amd/display/dc/dce110/dce110_hw_sequencer.c  |  9 ++++++---
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h      |  2 +-
 6 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index 9f11dcf67c28..2c278b626256 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -1698,14 +1698,14 @@ static enum bp_result bios_parser_enable_lvtma_control(
 	struct dc_bios *dcb,
 	uint8_t uc_pwr_on,
 	uint8_t panel_instance,
-	uint8_t bypass_powerdown_wait)
+	uint8_t bypass_panel_control_wait)
 {
 	struct bios_parser *bp = BP_FROM_DCB(dcb);
 
 	if (!bp->cmd_tbl.enable_lvtma_control)
 		return BP_RESULT_FAILURE;
 
-	return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on, panel_instance, bypass_powerdown_wait);
+	return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on, panel_instance, bypass_panel_control_wait);
 }
 
 static bool bios_parser_is_accelerated_mode(
diff --git a/drivers/gpu/drm/amd/display/dc/bios/command_table2.c b/drivers/gpu/drm/amd/display/dc/bios/command_table2.c
index 91adebc5c5b7..1ef9e4053bb7 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/command_table2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/command_table2.c
@@ -987,7 +987,7 @@ static enum bp_result enable_lvtma_control(
 	struct bios_parser *bp,
 	uint8_t uc_pwr_on,
 	uint8_t panel_instance,
-	uint8_t bypass_powerdown_wait);
+	uint8_t bypass_panel_control_wait);
 
 static void init_enable_lvtma_control(struct bios_parser *bp)
 {
@@ -1000,7 +1000,7 @@ static void enable_lvtma_control_dmcub(
 	struct dc_dmub_srv *dmcub,
 	uint8_t uc_pwr_on,
 	uint8_t panel_instance,
-	uint8_t bypass_powerdown_wait)
+	uint8_t bypass_panel_control_wait)
 {
 
 	union dmub_rb_cmd cmd;
@@ -1014,8 +1014,8 @@ static void enable_lvtma_control_dmcub(
 			uc_pwr_on;
 	cmd.lvtma_control.data.panel_inst =
 			panel_instance;
-	cmd.lvtma_control.data.bypass_powerdown_wait =
-			bypass_powerdown_wait;
+	cmd.lvtma_control.data.bypass_panel_control_wait =
+			bypass_panel_control_wait;
 	dc_dmub_srv_cmd_queue(dmcub, &cmd);
 	dc_dmub_srv_cmd_execute(dmcub);
 	dc_dmub_srv_wait_idle(dmcub);
@@ -1026,7 +1026,7 @@ static enum bp_result enable_lvtma_control(
 	struct bios_parser *bp,
 	uint8_t uc_pwr_on,
 	uint8_t panel_instance,
-	uint8_t bypass_powerdown_wait)
+	uint8_t bypass_panel_control_wait)
 {
 	enum bp_result result = BP_RESULT_FAILURE;
 
@@ -1035,7 +1035,7 @@ static enum bp_result enable_lvtma_control(
 		enable_lvtma_control_dmcub(bp->base.ctx->dmub_srv,
 				uc_pwr_on,
 				panel_instance,
-				bypass_powerdown_wait);
+				bypass_panel_control_wait);
 		return BP_RESULT_OK;
 	}
 	return result;
diff --git a/drivers/gpu/drm/amd/display/dc/bios/command_table2.h b/drivers/gpu/drm/amd/display/dc/bios/command_table2.h
index acb7cc69f699..b6d09bf6cf72 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/command_table2.h
+++ b/drivers/gpu/drm/amd/display/dc/bios/command_table2.h
@@ -97,7 +97,7 @@ struct cmd_tbl {
 	enum bp_result (*enable_lvtma_control)(struct bios_parser *bp,
 			uint8_t uc_pwr_on,
 			uint8_t panel_instance,
-			uint8_t bypass_powerdown_wait);
+			uint8_t bypass_panel_control_wait);
 };
 
 void dal_firmware_parser_init_cmd_tbl(struct bios_parser *bp);
diff --git a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
index 07d996c992ed..be9aa1a71847 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
@@ -141,7 +141,7 @@ struct dc_vbios_funcs {
 		struct dc_bios *bios,
 		uint8_t uc_pwr_on,
 		uint8_t panel_instance,
-		uint8_t bypass_powerdown_wait);
+		uint8_t bypass_panel_control_wait);
 
 	enum bp_result (*get_soc_bb_info)(
 		struct dc_bios *dcb,
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index ef5afd2a5cf7..a51bd21a796f 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -943,7 +943,6 @@ void dce110_edp_wait_for_T12(
 			msleep(t12_duration - time_since_edp_poweroff_ms);
 	}
 }
-
 /*todo: cloned in stream enc, fix*/
 /*
  * @brief
@@ -1022,16 +1021,20 @@ void dce110_edp_backlight_control(
 			DC_LOG_DC("edp_receiver_ready_T7 skipped\n");
 	}
 
+	/* Setting link_powered_externally will bypass delays in the backlight
+	 * as they are not required if the link is being powered by a different
+	 * source.
+	 */
 	if (ctx->dc->ctx->dmub_srv &&
 			ctx->dc->debug.dmub_command_table) {
 		if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON)
 			ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
 					LVTMA_CONTROL_LCD_BLON,
-					panel_instance, 0);
+					panel_instance, link->link_powered_externally);
 		else
 			ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
 					LVTMA_CONTROL_LCD_BLOFF,
-					panel_instance, 0);
+					panel_instance, link->link_powered_externally);
 	}
 
 	link_transmitter_control(ctx->dc_bios, &cntl);
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index b3acdb53875c..06c553b61322 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -3111,7 +3111,7 @@ struct dmub_rb_cmd_panel_cntl {
  */
 struct dmub_cmd_lvtma_control_data {
 	uint8_t uc_pwr_action; /**< LVTMA_ACTION */
-	uint8_t bypass_powerdown_wait;
+	uint8_t bypass_panel_control_wait;
 	uint8_t reserved_0[2];
 	uint8_t panel_inst; /**< LVTMA control instance */
 	uint8_t reserved_1[3]; /**< For future use */
-- 
2.39.0

[PATCH 31/37] drm/amd/display: fix mapping to non-allocated address

[Rodrigo Siqueira]

From: Brandon Syu <Brandon.Syu@amd.com>

[Why]
There is an issue mapping non-allocated location of memory.
It would allocate gpio registers from an array out of bounds.

[How]
Patch correct numbers of bounds for using.

Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Brandon Syu <Brandon.Syu@amd.com>
---
 .../gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c   | 6 ++++--
 .../gpu/drm/amd/display/dc/gpio/dcn30/hw_factory_dcn30.c   | 6 ++++--
 .../gpu/drm/amd/display/dc/gpio/dcn32/hw_factory_dcn32.c   | 6 ++++--
 drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h             | 7 +++++++
 4 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
index 9b63c6c0cc84..e0bd0c722e00 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
@@ -138,7 +138,8 @@ static const struct ddc_sh_mask ddc_shift[] = {
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 3),
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 4),
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 5),
-	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6)
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6),
+	DDC_MASK_SH_LIST_DCN2_VGA(__SHIFT)
 };
 
 static const struct ddc_sh_mask ddc_mask[] = {
@@ -147,7 +148,8 @@ static const struct ddc_sh_mask ddc_mask[] = {
 	DDC_MASK_SH_LIST_DCN2(_MASK, 3),
 	DDC_MASK_SH_LIST_DCN2(_MASK, 4),
 	DDC_MASK_SH_LIST_DCN2(_MASK, 5),
-	DDC_MASK_SH_LIST_DCN2(_MASK, 6)
+	DDC_MASK_SH_LIST_DCN2(_MASK, 6),
+	DDC_MASK_SH_LIST_DCN2_VGA(_MASK)
 };
 
 #include "../generic_regs.h"
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn30/hw_factory_dcn30.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn30/hw_factory_dcn30.c
index 687d4f128480..36a5736c58c9 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dcn30/hw_factory_dcn30.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn30/hw_factory_dcn30.c
@@ -145,7 +145,8 @@ static const struct ddc_sh_mask ddc_shift[] = {
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 3),
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 4),
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 5),
-	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6)
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6),
+	DDC_MASK_SH_LIST_DCN2_VGA(__SHIFT)
 };
 
 static const struct ddc_sh_mask ddc_mask[] = {
@@ -154,7 +155,8 @@ static const struct ddc_sh_mask ddc_mask[] = {
 	DDC_MASK_SH_LIST_DCN2(_MASK, 3),
 	DDC_MASK_SH_LIST_DCN2(_MASK, 4),
 	DDC_MASK_SH_LIST_DCN2(_MASK, 5),
-	DDC_MASK_SH_LIST_DCN2(_MASK, 6)
+	DDC_MASK_SH_LIST_DCN2(_MASK, 6),
+	DDC_MASK_SH_LIST_DCN2_VGA(_MASK)
 };
 
 #include "../generic_regs.h"
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn32/hw_factory_dcn32.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn32/hw_factory_dcn32.c
index 9fd8b269dd79..985f10b39750 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/dcn32/hw_factory_dcn32.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn32/hw_factory_dcn32.c
@@ -149,7 +149,8 @@ static const struct ddc_sh_mask ddc_shift[] = {
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 3),
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 4),
 	DDC_MASK_SH_LIST_DCN2(__SHIFT, 5),
-	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6)
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6),
+	DDC_MASK_SH_LIST_DCN2_VGA(__SHIFT)
 };
 
 static const struct ddc_sh_mask ddc_mask[] = {
@@ -158,7 +159,8 @@ static const struct ddc_sh_mask ddc_mask[] = {
 	DDC_MASK_SH_LIST_DCN2(_MASK, 3),
 	DDC_MASK_SH_LIST_DCN2(_MASK, 4),
 	DDC_MASK_SH_LIST_DCN2(_MASK, 5),
-	DDC_MASK_SH_LIST_DCN2(_MASK, 6)
+	DDC_MASK_SH_LIST_DCN2(_MASK, 6),
+	DDC_MASK_SH_LIST_DCN2_VGA(_MASK)
 };
 
 #include "../generic_regs.h"
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h b/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h
index 308a543178a5..59884ef651b3 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h
@@ -113,6 +113,13 @@
 	(PHY_AUX_CNTL__AUX## cd ##_PAD_RXSEL## mask_sh),\
 	(DC_GPIO_AUX_CTRL_5__DDC_PAD## cd ##_I2CMODE## mask_sh)}
 
+#define DDC_MASK_SH_LIST_DCN2_VGA(mask_sh) \
+	{DDC_MASK_SH_LIST_COMMON(mask_sh),\
+	0,\
+	0,\
+	0,\
+	0}
+
 struct ddc_registers {
 	struct gpio_registers gpio;
 	uint32_t ddc_setup;
-- 
2.39.0

[PATCH 32/37] drm/amd/display: Request min clocks after disabling pipes on init

[Rodrigo Siqueira]

From: Alvin Lee <Alvin.Lee2@amd.com>

[Description]
- Request min clocks after disabling pipes on init
- This optimizes for power savings during init sequence
- Also handles the case where we boot up with no display connected

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
---
 .../drm/amd/display/dc/dcn32/dcn32_hwseq.c    | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
index 478412220360..766002619a9c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
@@ -685,6 +685,25 @@ void dcn32_program_mall_pipe_config(struct dc *dc, struct dc_state *context)
 	}
 }
 
+static void dcn32_initialize_min_clocks(struct dc *dc)
+{
+	struct dc_clocks *clocks = &dc->current_state->bw_ctx.bw.dcn.clk;
+
+	clocks->dcfclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].dcfclk_mhz * 1000;
+	clocks->socclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].socclk_mhz * 1000;
+	clocks->dramclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].memclk_mhz * 1000;
+	clocks->dppclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].dppclk_mhz * 1000;
+	clocks->dispclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].dispclk_mhz * 1000;
+	clocks->ref_dtbclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].dtbclk_mhz * 1000;
+	clocks->fclk_p_state_change_support = true;
+	clocks->p_state_change_support = true;
+
+	dc->clk_mgr->funcs->update_clocks(
+			dc->clk_mgr,
+			dc->current_state,
+			true);
+}
+
 void dcn32_init_hw(struct dc *dc)
 {
 	struct abm **abms = dc->res_pool->multiple_abms;
@@ -779,6 +798,8 @@ void dcn32_init_hw(struct dc *dc)
 		if (dc->res_pool->hubbub->funcs->allow_self_refresh_control)
 			dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub,
 					!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
+
+		dcn32_initialize_min_clocks(dc);
 	}
 
 	/* In headless boot cases, DIG may be turned
-- 
2.39.0

[PATCH 33/37] drm/amd/display: Allow subvp on vactive pipes that are 2560x1440@60

[Rodrigo Siqueira]

From: Alvin Lee <Alvin.Lee2@amd.com>

Enable subvp on specifically 1440p@60hz displays even though it can
switch in vactive.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
---
 .../drm/amd/display/dc/dcn32/dcn32_resource.h |  2 ++
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  | 31 ++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
index 40cda0f4c12c..b07d3b0e6a5c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
@@ -144,6 +144,8 @@ void dcn32_restore_mall_state(struct dc *dc,
 		struct dc_state *context,
 		struct mall_temp_config *temp_config);
 
+bool dcn32_allow_subvp_with_active_margin(struct pipe_ctx *pipe);
+
 /* definitions for run time init of reg offsets */
 
 /* CLK SRC */
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 2e22600ad5df..5b928f3b719d 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -694,7 +694,9 @@ static bool dcn32_assign_subvp_pipe(struct dc *dc,
 		 */
 		if (pipe->plane_state && !pipe->top_pipe && !dcn32_is_center_timing(pipe) &&
 				pipe->stream->mall_stream_config.type == SUBVP_NONE && refresh_rate < 120 && !pipe->plane_state->address.tmz_surface &&
-				vba->ActiveDRAMClockChangeLatencyMarginPerState[vba->VoltageLevel][vba->maxMpcComb][vba->pipe_plane[pipe_idx]] <= 0) {
+				(vba->ActiveDRAMClockChangeLatencyMarginPerState[vba->VoltageLevel][vba->maxMpcComb][vba->pipe_plane[pipe_idx]] <= 0 ||
+				(vba->ActiveDRAMClockChangeLatencyMarginPerState[vba->VoltageLevel][vba->maxMpcComb][vba->pipe_plane[pipe_idx]] > 0 &&
+						dcn32_allow_subvp_with_active_margin(pipe)))) {
 			while (pipe) {
 				num_pipes++;
 				pipe = pipe->bottom_pipe;
@@ -2675,3 +2677,30 @@ void dcn32_zero_pipe_dcc_fraction(display_e2e_pipe_params_st *pipes,
 	pipes[pipe_cnt].pipe.src.dcc_fraction_of_zs_req_luma = 0;
 	pipes[pipe_cnt].pipe.src.dcc_fraction_of_zs_req_chroma = 0;
 }
+
+bool dcn32_allow_subvp_with_active_margin(struct pipe_ctx *pipe)
+{
+	bool allow = false;
+	uint32_t refresh_rate = 0;
+
+	/* Allow subvp on displays that have active margin for 2560x1440@60hz displays
+	 * only for now. There must be no scaling as well.
+	 *
+	 * For now we only enable on 2560x1440@60hz displays to enable 4K60 + 1440p60 configs
+	 * for p-state switching.
+	 */
+	if (pipe->stream && pipe->plane_state) {
+		refresh_rate = (pipe->stream->timing.pix_clk_100hz * 100 +
+						pipe->stream->timing.v_total * pipe->stream->timing.h_total - 1)
+						/ (double)(pipe->stream->timing.v_total * pipe->stream->timing.h_total);
+		if (pipe->stream->timing.v_addressable == 1440 &&
+				pipe->stream->timing.h_addressable == 2560 &&
+				refresh_rate >= 55 && refresh_rate <= 65 &&
+				pipe->plane_state->src_rect.height == 1440 &&
+				pipe->plane_state->src_rect.width == 2560 &&
+				pipe->plane_state->dst_rect.height == 1440 &&
+				pipe->plane_state->dst_rect.width == 2560)
+			allow = true;
+	}
+	return allow;
+}
-- 
2.39.0

[PATCH 34/37] drm/amd/display: Account for MPO planes in dcn32 mall alloc calculations

[Rodrigo Siqueira]

From: Dillon Varone <Dillon.Varone@amd.com>

[WHY?]
Cannot only consider the MALL required from top pipes because of the MPO
case.

[HOW?]
Only count a pipe if it fits the following criteria:
1) does not have a top pipe (is the topmost pipe for that plane)
2) it does have a top pipe, but that pipe is associated with a different
   plane

Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 5b928f3b719d..7feb8759e475 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -1356,9 +1356,10 @@ static void dcn32_calculate_dlg_params(struct dc *dc, struct dc_state *context,
 		context->res_ctx.pipe_ctx[i].surface_size_in_mall_bytes = get_surface_size_in_mall(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
 
 		/* MALL Allocation Sizes */
-		/* count from active, top pipes only */
+		/* count from active, top pipes per plane only */
 		if (context->res_ctx.pipe_ctx[i].stream && context->res_ctx.pipe_ctx[i].plane_state &&
-				context->res_ctx.pipe_ctx[i].top_pipe == NULL &&
+				(context->res_ctx.pipe_ctx[i].top_pipe == NULL ||
+				context->res_ctx.pipe_ctx[i].plane_state != context->res_ctx.pipe_ctx[i].top_pipe->plane_state) &&
 				context->res_ctx.pipe_ctx[i].prev_odm_pipe == NULL) {
 			/* SS: all active surfaces stored in MALL */
 			if (context->res_ctx.pipe_ctx[i].stream->mall_stream_config.type != SUBVP_PHANTOM) {
-- 
2.39.0

[PATCH 35/37] drm/amd/display: phase2 enable mst hdcp multiple displays

[Rodrigo Siqueira]

From: hersen wu <hersenxs.wu@amd.com>

[why]
For MST topology with 1 physical link and multiple connectors (>=2),
e.g. daisy cahined MST + SST, or 1-to-multi MST hub, if userspace
set to enable the HDCP simultaneously on all connected outputs, the
commit tail iteratively call the hdcp_update_display() for each
display (connector). However, the hdcp workqueue data structure for
each link has only one DM connector and encryption status members,
which means the work queue of property_validate/update() would only
be triggered for the last connector within this physical link, and
therefore the HDCP property value of other connectors would stay on
DESIRED instead of switching to ENABLED, which is NOT as expected.

[how]
Use array of AMDGPU_DM_MAX_DISPLAY_INDEX for both aconnector and
encryption status in hdcp workqueue data structure for each physical
link. For property validate/update work queue, we iterates over the
array and do similar operation/check for each connected display.

Signed-off-by: hersen wu <hersenxs.wu@amd.com>
---
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c    | 160 +++++++++++++-----
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.h    |   5 +-
 2 files changed, 122 insertions(+), 43 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index a7fd98f57f94..0301faaf5d48 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -170,9 +170,10 @@ void hdcp_update_display(struct hdcp_workqueue *hdcp_work,
 	struct mod_hdcp_display *display = &hdcp_work[link_index].display;
 	struct mod_hdcp_link *link = &hdcp_work[link_index].link;
 	struct mod_hdcp_display_query query;
+	unsigned int conn_index = aconnector->base.index;
 
 	mutex_lock(&hdcp_w->mutex);
-	hdcp_w->aconnector = aconnector;
+	hdcp_w->aconnector[conn_index] = aconnector;
 
 	query.display = NULL;
 	mod_hdcp_query_display(&hdcp_w->hdcp, aconnector->base.index, &query);
@@ -204,7 +205,7 @@ void hdcp_update_display(struct hdcp_workqueue *hdcp_work,
 					      msecs_to_jiffies(DRM_HDCP_CHECK_PERIOD_MS));
 		} else {
 			display->adjust.disable = MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION;
-			hdcp_w->encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
+			hdcp_w->encryption_status[conn_index] = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
 			cancel_delayed_work(&hdcp_w->property_validate_dwork);
 		}
 
@@ -223,9 +224,10 @@ static void hdcp_remove_display(struct hdcp_workqueue *hdcp_work,
 {
 	struct hdcp_workqueue *hdcp_w = &hdcp_work[link_index];
 	struct drm_connector_state *conn_state = aconnector->base.state;
+	unsigned int conn_index = aconnector->base.index;
 
 	mutex_lock(&hdcp_w->mutex);
-	hdcp_w->aconnector = aconnector;
+	hdcp_w->aconnector[conn_index] = aconnector;
 
 	/* the removal of display will invoke auth reset -> hdcp destroy and
 	 * we'd expect the Content Protection (CP) property changed back to
@@ -247,13 +249,18 @@ static void hdcp_remove_display(struct hdcp_workqueue *hdcp_work,
 void hdcp_reset_display(struct hdcp_workqueue *hdcp_work, unsigned int link_index)
 {
 	struct hdcp_workqueue *hdcp_w = &hdcp_work[link_index];
+	unsigned int conn_index;
 
 	mutex_lock(&hdcp_w->mutex);
 
 	mod_hdcp_reset_connection(&hdcp_w->hdcp,  &hdcp_w->output);
 
 	cancel_delayed_work(&hdcp_w->property_validate_dwork);
-	hdcp_w->encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
+
+	for (conn_index = 0; conn_index < AMDGPU_DM_MAX_DISPLAY_INDEX; conn_index++) {
+		hdcp_w->encryption_status[conn_index] =
+			MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
+	}
 
 	process_output(hdcp_w);
 
@@ -290,49 +297,83 @@ static void event_callback(struct work_struct *work)
 
 
 }
+
 static void event_property_update(struct work_struct *work)
 {
-
 	struct hdcp_workqueue *hdcp_work = container_of(work, struct hdcp_workqueue, property_update_work);
-	struct amdgpu_dm_connector *aconnector = hdcp_work->aconnector;
-	struct drm_device *dev = hdcp_work->aconnector->base.dev;
+	struct amdgpu_dm_connector *aconnector = NULL;
+	struct drm_device *dev;
 	long ret;
+	unsigned int conn_index;
+	struct drm_connector *connector;
+	struct drm_connector_state *conn_state;
 
-	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
-	mutex_lock(&hdcp_work->mutex);
+	for (conn_index = 0; conn_index < AMDGPU_DM_MAX_DISPLAY_INDEX; conn_index++) {
+		aconnector = hdcp_work->aconnector[conn_index];
 
+		if (!aconnector)
+			continue;
 
-	if (aconnector->base.state && aconnector->base.state->commit) {
-		ret = wait_for_completion_interruptible_timeout(&aconnector->base.state->commit->hw_done, 10 * HZ);
+		if (!aconnector->base.index)
+			continue;
 
-		if (ret == 0) {
-			DRM_ERROR("HDCP state unknown! Setting it to DESIRED");
-			hdcp_work->encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
-		}
-	}
+		connector = &aconnector->base;
+
+		/* check if display connected */
+		if (connector->status != connector_status_connected)
+			continue;
 
-	if (aconnector->base.state) {
-		if (hdcp_work->encryption_status != MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF) {
-			if (aconnector->base.state->hdcp_content_type ==
+		conn_state = aconnector->base.state;
+
+		if (!conn_state)
+			continue;
+
+		dev = connector->dev;
+
+		if (!dev)
+			continue;
+
+		drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+		mutex_lock(&hdcp_work->mutex);
+
+		if (conn_state->commit) {
+			ret = wait_for_completion_interruptible_timeout(
+				&conn_state->commit->hw_done, 10 * HZ);
+			if (ret == 0) {
+				DRM_ERROR(
+					"HDCP state unknown! Setting it to DESIRED");
+				hdcp_work->encryption_status[conn_index] =
+					MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
+			}
+		}
+		if (hdcp_work->encryption_status[conn_index] !=
+			MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF) {
+			if (conn_state->hdcp_content_type ==
 				DRM_MODE_HDCP_CONTENT_TYPE0 &&
-			hdcp_work->encryption_status <=
-				MOD_HDCP_ENCRYPTION_STATUS_HDCP2_TYPE0_ON)
-				drm_hdcp_update_content_protection(&aconnector->base,
+				hdcp_work->encryption_status[conn_index] <=
+				MOD_HDCP_ENCRYPTION_STATUS_HDCP2_TYPE0_ON) {
+
+				DRM_DEBUG_DRIVER("[HDCP_DM] DRM_MODE_CONTENT_PROTECTION_ENABLED\n");
+				drm_hdcp_update_content_protection(
+					connector,
 					DRM_MODE_CONTENT_PROTECTION_ENABLED);
-			else if (aconnector->base.state->hdcp_content_type ==
+			} else if (conn_state->hdcp_content_type ==
 					DRM_MODE_HDCP_CONTENT_TYPE1 &&
-				hdcp_work->encryption_status ==
-					MOD_HDCP_ENCRYPTION_STATUS_HDCP2_TYPE1_ON)
-				drm_hdcp_update_content_protection(&aconnector->base,
+					hdcp_work->encryption_status[conn_index] ==
+					MOD_HDCP_ENCRYPTION_STATUS_HDCP2_TYPE1_ON) {
+				drm_hdcp_update_content_protection(
+					connector,
 					DRM_MODE_CONTENT_PROTECTION_ENABLED);
+			}
 		} else {
-			drm_hdcp_update_content_protection(&aconnector->base,
-				DRM_MODE_CONTENT_PROTECTION_DESIRED);
+			DRM_DEBUG_DRIVER("[HDCP_DM] DRM_MODE_CONTENT_PROTECTION_DESIRED\n");
+			drm_hdcp_update_content_protection(
+				connector, DRM_MODE_CONTENT_PROTECTION_DESIRED);
+
 		}
+		mutex_unlock(&hdcp_work->mutex);
+		drm_modeset_unlock(&dev->mode_config.connection_mutex);
 	}
-
-	mutex_unlock(&hdcp_work->mutex);
-	drm_modeset_unlock(&dev->mode_config.connection_mutex);
 }
 
 static void event_property_validate(struct work_struct *work)
@@ -340,19 +381,51 @@ static void event_property_validate(struct work_struct *work)
 	struct hdcp_workqueue *hdcp_work =
 		container_of(to_delayed_work(work), struct hdcp_workqueue, property_validate_dwork);
 	struct mod_hdcp_display_query query;
-	struct amdgpu_dm_connector *aconnector = hdcp_work->aconnector;
-
-	if (!aconnector)
-		return;
+	struct amdgpu_dm_connector *aconnector;
+	unsigned int conn_index;
 
 	mutex_lock(&hdcp_work->mutex);
 
-	query.encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
-	mod_hdcp_query_display(&hdcp_work->hdcp, aconnector->base.index, &query);
+	for (conn_index = 0; conn_index < AMDGPU_DM_MAX_DISPLAY_INDEX;
+	     conn_index++) {
+		aconnector = hdcp_work->aconnector[conn_index];
+
+
+		if (!aconnector)
+			continue;
+
+		if (!aconnector->base.index)
+			continue;
+
+		/* check if display connected */
+		if (aconnector->base.status != connector_status_connected)
+			continue;
 
-	if (query.encryption_status != hdcp_work->encryption_status) {
-		hdcp_work->encryption_status = query.encryption_status;
-		schedule_work(&hdcp_work->property_update_work);
+		if (!aconnector->base.state)
+			continue;
+
+		query.encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
+		mod_hdcp_query_display(&hdcp_work->hdcp, aconnector->base.index,
+				       &query);
+
+		DRM_DEBUG_DRIVER("[HDCP_DM] disp %d, connector->CP %u, (query, work): (%d, %d)\n",
+			aconnector->base.index,
+			aconnector->base.state->content_protection,
+			query.encryption_status,
+			hdcp_work->encryption_status[conn_index]);
+
+		if (query.encryption_status !=
+		    hdcp_work->encryption_status[conn_index]) {
+			DRM_DEBUG_DRIVER("[HDCP_DM] encryption_status change from %x to %x\n",
+				hdcp_work->encryption_status[conn_index], query.encryption_status);
+
+			hdcp_work->encryption_status[conn_index] =
+				query.encryption_status;
+
+			DRM_DEBUG_DRIVER("[HDCP_DM] trigger property_update_work\n");
+
+			schedule_work(&hdcp_work->property_update_work);
+		}
 	}
 
 	mutex_unlock(&hdcp_work->mutex);
@@ -686,6 +759,13 @@ struct hdcp_workqueue *hdcp_create_workqueue(struct amdgpu_device *adev, struct
 		hdcp_work[i].hdcp.config.ddc.funcs.read_i2c = lp_read_i2c;
 		hdcp_work[i].hdcp.config.ddc.funcs.write_dpcd = lp_write_dpcd;
 		hdcp_work[i].hdcp.config.ddc.funcs.read_dpcd = lp_read_dpcd;
+
+		memset(hdcp_work[i].aconnector, 0,
+		       sizeof(struct amdgpu_dm_connector *) *
+			       AMDGPU_DM_MAX_DISPLAY_INDEX);
+		memset(hdcp_work[i].encryption_status, 0,
+		       sizeof(enum mod_hdcp_encryption_status) *
+			       AMDGPU_DM_MAX_DISPLAY_INDEX);
 	}
 
 	cp_psp->funcs.update_stream_config = update_config;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h
index bbbf7d0eff82..69b445b011c8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h
@@ -43,7 +43,7 @@ struct hdcp_workqueue {
 	struct delayed_work callback_dwork;
 	struct delayed_work watchdog_timer_dwork;
 	struct delayed_work property_validate_dwork;
-	struct amdgpu_dm_connector *aconnector;
+	struct amdgpu_dm_connector *aconnector[AMDGPU_DM_MAX_DISPLAY_INDEX];
 	struct mutex mutex;
 
 	struct mod_hdcp hdcp;
@@ -51,8 +51,7 @@ struct hdcp_workqueue {
 	struct mod_hdcp_display display;
 	struct mod_hdcp_link link;
 
-	enum mod_hdcp_encryption_status encryption_status;
-
+	enum mod_hdcp_encryption_status encryption_status[AMDGPU_DM_MAX_DISPLAY_INDEX];
 	/* when display is unplugged from mst hub, connctor will be
 	 * destroyed within dm_dp_mst_connector_destroy. connector
 	 * hdcp perperties, like type, undesired, desired, enabled,
-- 
2.39.0

[PATCH 36/37] drm/amd/display: hdcp not enabled on connector 0

[Rodrigo Siqueira]

From: hersen wu <hersenxs.wu@amd.com>

[Why]
incorrect skip when drm_connector.index = 0 within
event_property_validate and update

[How] handle hdcp validate and update for connector 0

Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: hersen wu <hersenxs.wu@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index 0301faaf5d48..8e572f07ec47 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -314,9 +314,6 @@ static void event_property_update(struct work_struct *work)
 		if (!aconnector)
 			continue;
 
-		if (!aconnector->base.index)
-			continue;
-
 		connector = &aconnector->base;
 
 		/* check if display connected */
@@ -390,13 +387,9 @@ static void event_property_validate(struct work_struct *work)
 	     conn_index++) {
 		aconnector = hdcp_work->aconnector[conn_index];
 
-
 		if (!aconnector)
 			continue;
 
-		if (!aconnector->base.index)
-			continue;
-
 		/* check if display connected */
 		if (aconnector->base.status != connector_status_connected)
 			continue;
-- 
2.39.0

[PATCH 37/37] drm/amd/display: 3.2.218

[Rodrigo Siqueira]

From: Aric Cyr <aric.cyr@amd.com>

This version brings along following fixes:

- Revert patches that caused regressions associated with audio and an
  old change that checks the DCN version.
- Refactor DDC and HDP.
- Move DPIA and DPCD logic to new files.
- Updates to DMUB.
- Optimization and bug fixes for SUBVP/DRR.
- Drop legacy code.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 53f449fa2b71..22e754ad22c8 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -47,7 +47,7 @@ struct aux_payload;
 struct set_config_cmd_payload;
 struct dmub_notification;
 
-#define DC_VER "3.2.217"
+#define DC_VER "3.2.218"
 
 #define MAX_SURFACES 3
 #define MAX_PLANES 6
-- 
2.39.0

RE: [PATCH 00/37] DC Patches Jan 10, 2023

[Wheeler, Daniel]

[Public]

Hi all,
 
This week this patchset was tested on the following systems:
 
Lenovo Thinkpad T14s Gen2, with AMD Ryzen 5 5650U 
Lenovo Thinkpad T13s Gen4 with AMD Ryzen 5 6600U
Reference AMD RX6800
 
These systems were tested on the following display types: 
eDP, (1080p 60hz [4500U, 5650U]) (1920x1200 60hz [6600U]) (2560x1600 120hz[6600U])
VGA and DVI (1680x1050 60HZ [DP to VGA/DVI, USB-C to DVI/VGA])
DP/HDMI/USB-C (1440p 170hz, 4k 60hz, 4k 144hz [Includes USB-C to DP/HDMI adapters])
 
MST tested with Startech MST14DP123DP and 2x 4k 60Hz displays
DSC tested with Cable Matters 101075 (DP to 3x DP), and 201375 (USB-C to 3x DP) with 3x 4k60 displays
HP Hook G2 with 1 and 2 4k60 Displays
 
The testing is a mix of automated and manual tests. Manual testing includes (but is not limited to):
Changing display configurations and settings
Benchmark testing
Feature testing (Freesync, etc.)
 
Automated testing includes (but is not limited to):
Script testing (scripts to automate some of the manual checks)
IGT testing
 
The patchset consists of the amd-staging-drm-next branch (Head commit - 004cf26320ba drm/amd/display: 3.2.217) with new patches added on top of it. This branch is used for both Ubuntu and Chrome OS testing (ChromeOS on a bi-weekly basis).

 
Tested on Ubuntu 22.04.1 and Chrome OS
 
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
 
 
Thank you,
 
Dan Wheeler
Sr. Technologist | AMD
SW Display
------------------------------------------------------------------------------------------------------------------
1 Commerce Valley Dr E, Thornhill, ON L3T 7X6
amd.com


-----Original Message-----
From: Siqueira, Rodrigo <Rodrigo.Siqueira@amd.com> 
Sent: January 10, 2023 11:55 AM
To: amd-gfx@lists.freedesktop.org
Cc: Wentland, Harry <Harry.Wentland@amd.com>; Li, Sun peng (Leo) <Sunpeng.Li@amd.com>; Lakha, Bhawanpreet <Bhawanpreet.Lakha@amd.com>; Siqueira, Rodrigo <Rodrigo.Siqueira@amd.com>; Pillai, Aurabindo <Aurabindo.Pillai@amd.com>; Zhuo, Qingqing (Lillian) <Qingqing.Zhuo@amd.com>; Li, Roman <Roman.Li@amd.com>; Lin, Wayne <Wayne.Lin@amd.com>; Wang, Chao-kai (Stylon) <Stylon.Wang@amd.com>; Chiu, Solomon <Solomon.Chiu@amd.com>; Kotarac, Pavle <Pavle.Kotarac@amd.com>; Gutierrez, Agustin <Agustin.Gutierrez@amd.com>; Zuo, Jerry <Jerry.Zuo@amd.com>; Mahfooz, Hamza <Hamza.Mahfooz@amd.com>; Wheeler, Daniel <Daniel.Wheeler@amd.com>
Subject: [PATCH 00/37] DC Patches Jan 10, 2023

This DC patchset brings improvements in multiple areas. In summary, we highlight the following areas:
    
- Revert patches that caused regressions associated with audio and an
  old change that checks the DCN version.
- Refactor DDC and HDP.
- Move DPIA and DPCD logic to new files.
- Updates to DMUB.
- Optimization and bug fixes for SUBVP/DRR.
- Drop legacy code.

Cc: Daniel Wheeler <daniel.wheeler@amd.com>

Thanks
Siqueira

Alvin Lee (2):
  drm/amd/display: Request min clocks after disabling pipes on init
  drm/amd/display: Allow subvp on vactive pipes that are 2560x1440@60

Aric Cyr (1):
  drm/amd/display: 3.2.218

Aurabindo Pillai (2):
  Revert "drm/amd/display: Demote Error Level When ODM Transition
    Supported"
  drm/amd/display: fix an error check condition for synced pipes

Bhawanpreet Lakha (1):
  drm/amd/display: Change i2c speed for hdcp

Brandon Syu (1):
  drm/amd/display: fix mapping to non-allocated address

Charlene Liu (2):
  drm/amd/display: add hubbub_init related
  drm/amd/display: contional remove disable dig_fifo when blank

Cruise Hung (1):
  drm/amd/display: Fix DPIA link encoder assignment issue

Dillon Varone (9):
  drm/amd/display: Implement FIFO enable sequence on DCN32
  drm/amd/display: Optimize subvp and drr validation
  drm/amd/display: Account for DCC Meta pitch in DML MALL surface
    calculations
  drm/amd/display: Account for Subvp Phantoms in DML MALL surface
    calculations
  drm/amd/display: Use DML for MALL SS and Subvp allocation calculations
  drm/amd/display: cleanup function args in dml
  drm/amd/display: set active bit for desktop with VSDBv3
  drm/amd/display: Remove DISPCLK dentist programming for dcn32
  drm/amd/display: Account for MPO planes in dcn32 mall alloc
    calculations

Dmytro Laktyushkin (1):
  drm/amd/display: fix multi edp panel instancing

Martin Leung (1):
  Revert "drm/amd/display: Speed up DML fast_validate path"

Mustapha Ghaddar (2):
  drm/amd/display: Update BW alloc after new DMUB logic
  drm/amd/display: Update dmub header to match DMUB

Rodrigo Siqueira (1):
  drm/amd/display: Remove unused code

Saaem Rizvi (2):
  drm/amd/display: Remove SubVp support if src/dst rect does not equal
    stream timing
  drm/amd/display: Add extra mblk for DCC

Tony Tascioglu (2):
  drm/amd/display: Optimize link power-down when link powered externally
  drm/amd/display: Skip backlight control delay on external powered
    links

Wenjing Liu (7):
  drm/amd/display: refactor hpd logic from dc_link to link_hpd
  drm/amd/display: refactor ddc logic from dc_link_ddc to link_ddc
  drm/amd/display: move dpcd logic from dc_link_dpcd to link_dpcd
  drm/amd/display: move dc_link_dpia logic to link_dp_dpia
  drm/amd/display: move dp link training logic to link_dp_training
  drm/amd/display: move dp phy related logic to link_dp_phy
  drm/amd/display: move dp capability related logic to
    link_dp_capability

hersen wu (2):
  drm/amd/display: phase2 enable mst hdcp multiple displays
  drm/amd/display: hdcp not enabled on connector 0

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |    1 -
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |    3 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c    |  153 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.h    |    5 +-
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |    2 -
 drivers/gpu/drm/amd/display/dc/Makefile       |    6 +-
 .../gpu/drm/amd/display/dc/bios/bios_parser.c |    1 -
 .../drm/amd/display/dc/bios/bios_parser2.c    |    6 +-
 .../drm/amd/display/dc/bios/command_table2.c  |   14 +-
 .../drm/amd/display/dc/bios/command_table2.h  |    3 +-
 .../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c  |   97 +-
 drivers/gpu/drm/amd/display/dc/core/dc.c      |    5 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |  542 +-  .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 6682 ++---------------
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c |   60 +-
 .../gpu/drm/amd/display/dc/core/dc_resource.c |   35 +-
 drivers/gpu/drm/amd/display/dc/dc.h           |    3 +-
 .../gpu/drm/amd/display/dc/dc_bios_types.h    |    3 +-
 drivers/gpu/drm/amd/display/dc/dc_ddc_types.h |   28 +
 drivers/gpu/drm/amd/display/dc/dc_dp_types.h  |    3 +
 .../gpu/drm/amd/display/dc/dc_hdmi_types.h    |  114 +
 drivers/gpu/drm/amd/display/dc/dc_link.h      |   69 +-
 drivers/gpu/drm/amd/display/dc/dc_types.h     |    1 +
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.h  |    2 +-
 .../drm/amd/display/dc/dce/dce_link_encoder.c |    1 -
 .../display/dc/dce110/dce110_hw_sequencer.c   |   41 +-
 .../display/dc/dce110/dce110_hw_sequencer.h   |    2 +-
 .../drm/amd/display/dc/dcn10/dcn10_hubbub.h   |   12 +-
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |    4 +-
 .../amd/display/dc/dcn10/dcn10_link_encoder.c |    1 -
 .../display/dc/dcn10/dcn10_stream_encoder.c   |    2 +-
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    |   10 +-
 .../amd/display/dc/dcn20/dcn20_link_encoder.c |    1 -
 .../drm/amd/display/dc/dcn20/dcn20_resource.c |    6 +-
 .../display/dc/dcn20/dcn20_stream_encoder.c   |    2 +-
 .../display/dc/dcn201/dcn201_link_encoder.c   |    1 -
 .../amd/display/dc/dcn21/dcn21_link_encoder.c |    1 -
 .../display/dc/dcn30/dcn30_dio_link_encoder.c |    1 -
 .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    |    1 -
 .../drm/amd/display/dc/dcn30/dcn30_resource.c |    6 +-
 .../dc/dcn301/dcn301_dio_link_encoder.c       |    1 -
 .../amd/display/dc/dcn302/dcn302_resource.c   |   16 +
 .../amd/display/dc/dcn303/dcn303_resource.c   |    6 +-
 .../display/dc/dcn31/dcn31_dio_link_encoder.c |    1 -
 .../drm/amd/display/dc/dcn31/dcn31_hubbub.c   |   18 +
 .../drm/amd/display/dc/dcn31/dcn31_hubbub.h   |   10 +-
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |    9 +-
 .../dc/dcn314/dcn314_dio_stream_encoder.c     |    5 +-
 .../drm/amd/display/dc/dcn314/dcn314_hwseq.c  |    4 +-
 .../amd/display/dc/dcn316/dcn316_resource.c   |    2 +-
 .../display/dc/dcn32/dcn32_dio_link_encoder.c |    1 -
 .../dc/dcn32/dcn32_dio_stream_encoder.c       |   30 +-
 .../drm/amd/display/dc/dcn32/dcn32_hubbub.c   |   29 +
 .../drm/amd/display/dc/dcn32/dcn32_hubbub.h   |   17 +-
 .../gpu/drm/amd/display/dc/dcn32/dcn32_hubp.c |    6 +-
 .../drm/amd/display/dc/dcn32/dcn32_hwseq.c    |  176 +-
 .../drm/amd/display/dc/dcn32/dcn32_resource.c |    6 +-
 .../drm/amd/display/dc/dcn32/dcn32_resource.h |   15 +-
 .../display/dc/dcn32/dcn32_resource_helpers.c |  183 +-
 .../dc/dcn321/dcn321_dio_link_encoder.c       |    1 -
 .../amd/display/dc/dcn321/dcn321_resource.c   |    6 +-
 .../drm/amd/display/dc/dml/dcn20/dcn20_fpu.c  |    5 +-
 .../drm/amd/display/dc/dml/dcn32/dcn32_fpu.c  |  108 +-
 .../dc/dml/dcn32/display_mode_vba_32.c        |   43 +-
 .../dc/dml/dcn32/display_mode_vba_util_32.c   |   33 +-
 .../dc/dml/dcn32/display_mode_vba_util_32.h   |    5 +-
 .../drm/amd/display/dc/dml/display_mode_lib.h |    1 -
 .../drm/amd/display/dc/dml/display_mode_vba.c |    1 +
 .../drm/amd/display/dc/dml/display_mode_vba.h |    1 +
 .../display/dc/gpio/dcn20/hw_factory_dcn20.c  |    6 +-
 .../display/dc/gpio/dcn30/hw_factory_dcn30.c  |    6 +-
 .../display/dc/gpio/dcn32/hw_factory_dcn32.c  |    6 +-
 .../gpu/drm/amd/display/dc/gpio/ddc_regs.h    |    7 +
 .../gpu/drm/amd/display/dc/hdcp/hdcp_msg.c    |    5 +-
 .../gpu/drm/amd/display/dc/inc/core_types.h   |    6 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_ddc.h  |  133 -
 .../gpu/drm/amd/display/dc/inc/dc_link_dp.h   |  160 +-
 .../gpu/drm/amd/display/dc/inc/dc_link_dpia.h |  105 -
 .../drm/amd/display/dc/inc/hw/aux_engine.h    |    8 +-
 .../gpu/drm/amd/display/dc/inc/hw/dchubbub.h  |    1 +
 drivers/gpu/drm/amd/display/dc/inc/link.h     |   92 +
 drivers/gpu/drm/amd/display/dc/link/Makefile  |    6 +-
 .../{core/dc_link_ddc.c => link/link_ddc.c}   |  409 +-
 .../i2caux_interface.h => dc/link/link_ddc.h} |   70 +-
 .../amd/display/dc/link/link_dp_capability.c  | 2169 ++++++
 .../amd/display/dc/link/link_dp_capability.h  |   66 +
 .../drm/amd/display/dc/link/link_dp_dpia.c    |  107 +
 .../drm/amd/display/dc/link/link_dp_dpia.h    |   43 +
 .../drm/amd/display/dc/link/link_dp_dpia_bw.h |   47 +-
 .../gpu/drm/amd/display/dc/link/link_dp_phy.c |  145 +
 .../gpu/drm/amd/display/dc/link/link_dp_phy.h |   51 +
 .../amd/display/dc/link/link_dp_training.c    | 1700 +++++
 .../amd/display/dc/link/link_dp_training.h    |  179 +
 .../dc/link/link_dp_training_128b_132b.c      |  260 +
 .../dc/link/link_dp_training_128b_132b.h      |   42 +
 .../display/dc/link/link_dp_training_8b_10b.c |  415 +
 .../display/dc/link/link_dp_training_8b_10b.h |   61 +
 .../dc/link/link_dp_training_auxless.c        |   80 +
 .../dc/link/link_dp_training_auxless.h        |   35 +
 .../link_dp_training_dpia.c}                  |  308 +-
 .../display/dc/link/link_dp_training_dpia.h   |   41 +
 .../link_dp_training_fixed_vs_pe_retimer.c    |  580 ++
 .../link_dp_training_fixed_vs_pe_retimer.h    |   45 +
 .../{core/dc_link_dpcd.c => link/link_dpcd.c} |   13 +-
 .../amd/display/dc/{inc => link}/link_dpcd.h  |    5 +-
 .../gpu/drm/amd/display/dc/link/link_hpd.c    |  240 +
 .../gpu/drm/amd/display/dc/link/link_hpd.h    |   47 +
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |   16 +-
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   |  168 +-
 .../drm/amd/display/dmub/src/dmub_srv_stat.c  |   22 +-
 .../amd/display/include/ddc_service_types.h   |    5 +
 .../amd/display/modules/freesync/freesync.c   |   64 +-
 112 files changed, 8789 insertions(+), 7854 deletions(-)  create mode 100644 drivers/gpu/drm/amd/display/dc/dc_hdmi_types.h
 delete mode 100644 drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h
 delete mode 100644 drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/inc/link.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_ddc.c => link/link_ddc.c} (57%)  rename drivers/gpu/drm/amd/display/{include/i2caux_interface.h => dc/link/link_ddc.h} (52%)  create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_capability.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_capability.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_phy.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_phy.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_128b_132b.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_8b_10b.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_auxless.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_dpia.c => link/link_dp_training_dpia.c} (83%)  create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_dpia.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_dp_training_fixed_vs_pe_retimer.h
 rename drivers/gpu/drm/amd/display/dc/{core/dc_link_dpcd.c => link/link_dpcd.c} (97%)  rename drivers/gpu/drm/amd/display/dc/{inc => link}/link_dpcd.h (95%)  create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_hpd.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/link/link_hpd.h

--
2.39.0

Re: [PATCH 21/37] drm/amd/display: move dp capability related logic to link_dp_capability

[Conor Dooley]

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Hello!

On Tue, Jan 10, 2023 at 11:55:19AM -0500, Rodrigo Siqueira wrote:
> From: Wenjing Liu <wenjing.liu@amd.com>
> 
> Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>

I haven't done a bisection, but I am getting build failures due to code
added by this patch (d5a43956b73bd in next-20230119) when running
allmodconfig for RISC-V with gcc-11.

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:233:21: error: 'union hdmi_encoded_link_bw' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]

  233 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)

      |                     ^~~~~~~~~~~~~~~~~~~~

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:233:42: error: parameter 2 ('hdmi_encoded_link_bw') has incomplete type

  233 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)

      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:231:17: error: function declaration isn't a prototype [-Werror=strict-prototypes]

  231 | static uint32_t intersect_frl_link_bw_support(

      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c: In function 'get_active_converter_info':

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1125:76: error: storage size of 'hdmi_encoded_link_bw' isn't known

 1125 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;

      |                                                                            ^~~~~~~~~~~~~~~~~~~~

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1129:101: error: 'struct <anonymous>' has no member named 'MAX_ENCODED_LINK_BW_SUPPORT'

 1129 |                                                                                 hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT);

      |                                                                                                     ^

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1125:76: error: unused variable 'hdmi_encoded_link_bw' [-Werror=unused-variable]

 1125 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;

      |                                                                            ^~~~~~~~~~~~~~~~~~~~

cc1: all warnings being treated as errors

Thanks,
Conor.


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Re: [PATCH 21/37] drm/amd/display: move dp capability related logic to link_dp_capability

[Alex Deucher]

Arnd already sent a patch to fix this. It should show up in my next
drm-next update.

Alex

On Thu, Jan 19, 2023 at 1:55 PM Conor Dooley <conor.dooley@microchip.com> wrote:
>
> Hello!
>
> On Tue, Jan 10, 2023 at 11:55:19AM -0500, Rodrigo Siqueira wrote:
> > From: Wenjing Liu <wenjing.liu@amd.com>
> >
> > Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
> > Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
> > Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
>
> I haven't done a bisection, but I am getting build failures due to code
> added by this patch (d5a43956b73bd in next-20230119) when running
> allmodconfig for RISC-V with gcc-11.
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:233:21: error: 'union hdmi_encoded_link_bw' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
>
>   233 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
>
>       |                     ^~~~~~~~~~~~~~~~~~~~
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:233:42: error: parameter 2 ('hdmi_encoded_link_bw') has incomplete type
>
>   233 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
>
>       |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:231:17: error: function declaration isn't a prototype [-Werror=strict-prototypes]
>
>   231 | static uint32_t intersect_frl_link_bw_support(
>
>       |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c: In function 'get_active_converter_info':
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1125:76: error: storage size of 'hdmi_encoded_link_bw' isn't known
>
>  1125 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;
>
>       |                                                                            ^~~~~~~~~~~~~~~~~~~~
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1129:101: error: 'struct <anonymous>' has no member named 'MAX_ENCODED_LINK_BW_SUPPORT'
>
>  1129 |                                                                                 hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT);
>
>       |                                                                                                     ^
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1125:76: error: unused variable 'hdmi_encoded_link_bw' [-Werror=unused-variable]
>
>  1125 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;
>
>       |                                                                            ^~~~~~~~~~~~~~~~~~~~
>
> cc1: all warnings being treated as errors
>
> Thanks,
> Conor.
>

Re: [PATCH 21/37] drm/amd/display: move dp capability related logic to link_dp_capability

[Conor Dooley]

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On Thu, Jan 19, 2023 at 02:00:11PM -0500, Alex Deucher wrote:
> On Thu, Jan 19, 2023 at 1:55 PM Conor Dooley <conor.dooley@microchip.com> wrote:
> > On Tue, Jan 10, 2023 at 11:55:19AM -0500, Rodrigo Siqueira wrote:
> > > From: Wenjing Liu <wenjing.liu@amd.com>
> > >
> > > Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
> > > Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
> > > Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
> >
> > I haven't done a bisection, but I am getting build failures due to code
> > added by this patch (d5a43956b73bd in next-20230119) when running
> > allmodconfig for RISC-V with gcc-11.
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:233:21: error: 'union hdmi_encoded_link_bw' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
> >
> >   233 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
> >
> >       |                     ^~~~~~~~~~~~~~~~~~~~
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:233:42: error: parameter 2 ('hdmi_encoded_link_bw') has incomplete type
> >
> >   233 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
> >
> >       |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:231:17: error: function declaration isn't a prototype [-Werror=strict-prototypes]
> >
> >   231 | static uint32_t intersect_frl_link_bw_support(
> >
> >       |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c: In function 'get_active_converter_info':
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1125:76: error: storage size of 'hdmi_encoded_link_bw' isn't known
> >
> >  1125 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;
> >
> >       |                                                                            ^~~~~~~~~~~~~~~~~~~~
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1129:101: error: 'struct <anonymous>' has no member named 'MAX_ENCODED_LINK_BW_SUPPORT'
> >
> >  1129 |                                                                                 hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT);
> >
> >       |                                                                                                     ^
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1125:76: error: unused variable 'hdmi_encoded_link_bw' [-Werror=unused-variable]
> >
> >  1125 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;
> >
> >       |                                                                            ^~~~~~~~~~~~~~~~~~~~
> >
> > cc1: all warnings being treated as errors

> Arnd already sent a patch to fix this. It should show up in my next
> drm-next update.

That's good to hear. I did a dfn:$filename search on lore and didn't see
anything other than this and:
https://lore.kernel.org/all/20230118093011.3796248-1-arnd@kernel.org/

I did some more looking and now see:
https://lore.kernel.org/all/20230118160722.289840-1-arnd@kernel.org/

Perhaps I should've expanded my initial search given it was a type
issue.

Thanks,
Conor.


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