[PATCH 00/33] DC Patches September 08, 2021

[PATCH 00/33] DC Patches September 08, 2021

[Mikita Lipski]

This DC patchset brings improvements in multiple areas. In summary, we highlight:

* bandwidth optimizations on following fast updates
* fixes and code improvements of DP connector blanking
* add thread to offload work of MST HPD IRQ function
* fix gamma coefficients
* provide backlight support for APUs without DMUB support
* coverity memory leak and warning fixes
* DSC MST bandwidth calculation fixes
* DMUB enhances

Anson Jacob (3):
  drm/amd/display: Fix false BAD_FREE warning from Coverity
  drm/amd/display: Fix multiple memory leaks reported by coverity
  drm/amd/display: Revert "Directly retrain link from debugfs"

Anthony Koo (2):
  drm/amd/display: [FW Promotion] Release 0.0.81
  drm/amd/display: [FW Promotion] Release 0.0.82

Aric Cyr (2):
  drm/amd/display: 3.2.151
  drm/amd/display: 3.2.152

Aurabindo Pillai (1):
  drm/amd/display: Add flag to detect dpms force off during HPD

Dale Zhao (1):
  drm/amd/display: Refine condition of cursor visibility for pipe-split

Eric Yang (1):
  drm/amd/display: Add periodic detection when zstate is enabled

Harry Wentland (1):
  drm/amd/display: Get backlight from PWM if DMCU is not initialized

Hersen Wu (1):
  drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3

Ian Chen (1):
  drm/amd/display: remove force_enable_edp_fec param.

Jaehyun Chung (3):
  drm/amd/display: Add regamma/degamma coefficients and set sRGB when TF
    is BT709
  drm/amd/display: Correct degamma coefficients
  drm/amd/display: Revert adding degamma coefficients

Jimmy Kizito (1):
  drm/amd/display: Fix dynamic link encoder access.

Josip Pavic (1):
  drm/amd/display: unblock abm when odm is enabled only on configs that
    support it

Leo (Hanghong) Ma (3):
  drm/amd/display: Add DPCD writes at key points
  drm/amd/display: Fix system hang at boot
  drm/amd/display: Add helper for blanking all dp displays

Meenakshikumar Somasundaram (2):
  drm/amd/display: Fix for null pointer access for ddc pin and aux
    engine.
  drm/amd/display: Link training retry fix for abort case

Michael Strauss (2):
  drm/amd/display: Add VPG and AFMT low power support for DCN3.1
  drm/amd/display: Enable mem low power control for DCN3.1 sub-IP blocks

Nicholas Kazlauskas (1):
  drm/amd/display: Optimize bandwidth on following fast update

Qingqing Zhuo (3):
  drm/amd/display: Revert "dc: w/a for hard hang on HPD on native DP"
  drm/amd/display: Apply w/a for hard hang on HPD
  drm/amd/display: Fix unstable HPCP compliance on Chrome Barcelo

Wayne Lin (2):
  drm/amd/display: Add option to defer works of hpd_rx_irq
  drm/amd/display: Fork thread to offload work of hpd_rx_irq

Wenjing Liu (2):
  drm/amd/display: move bpp range decision in decide dsc bw range
    function
  drm/amd/display: update conditions to do dfp cap ext validation

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 266 ++++++++++++++----
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  51 +++-
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |   3 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c    |  16 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c |   6 +
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  18 +-
 .../display/amdgpu_dm/amdgpu_dm_mst_types.h   |  11 +-
 .../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c |  16 +-
 .../display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c  |   4 +-
 drivers/gpu/drm/amd/display/dc/core/dc.c      |  31 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 139 ++++++++-
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 138 ++++++---
 .../drm/amd/display/dc/core/dc_link_dpcd.c    |  11 +-
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c |  25 +-
 .../drm/amd/display/dc/core/dc_link_hwss.c    |  20 +-
 .../gpu/drm/amd/display/dc/core/dc_resource.c |   3 +-
 drivers/gpu/drm/amd/display/dc/dc.h           |   9 +-
 drivers/gpu/drm/amd/display/dc/dc_dsc.h       |   6 +-
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  10 +-
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c  |  12 +-
 .../drm/amd/display/dc/dce/dce_panel_cntl.c   |  10 -
 .../amd/display/dc/dce/dce_stream_encoder.c   |   2 +
 .../display/dc/dce110/dce110_hw_sequencer.c   |  55 ++--
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |  86 ++----
 .../drm/amd/display/dc/dcn10/dcn10_resource.c |   2 +-
 .../display/dc/dcn10/dcn10_stream_encoder.c   |  20 ++
 .../display/dc/dcn10/dcn10_stream_encoder.h   |   2 +
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    |  23 +-
 .../drm/amd/display/dc/dcn20/dcn20_resource.c |  20 +-
 .../display/dc/dcn20/dcn20_stream_encoder.c   |   5 +
 .../display/dc/dcn20/dcn20_stream_encoder.h   |   1 +
 .../gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c |  24 +-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h |  24 ++
 .../dc/dcn30/dcn30_dio_stream_encoder.c       |   2 +
 .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    |  39 +--
 .../gpu/drm/amd/display/dc/dcn30/dcn30_init.c |   1 +
 .../drm/amd/display/dc/dcn30/dcn30_resource.c |   6 +-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c  |   2 +-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h  |  11 +
 .../amd/display/dc/dcn301/dcn301_resource.c   |   6 +-
 .../amd/display/dc/dcn302/dcn302_resource.c   |   6 +-
 drivers/gpu/drm/amd/display/dc/dcn31/Makefile |   3 +-
 .../gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c |  92 ++++++
 .../gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h | 126 +++++++++
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |  60 +---
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.h    |   2 +-
 .../gpu/drm/amd/display/dc/dcn31/dcn31_init.c |   1 -
 .../drm/amd/display/dc/dcn31/dcn31_resource.c |  74 +++--
 .../gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c  |  87 ++++++
 .../gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h  | 162 +++++++++++
 drivers/gpu/drm/amd/display/dc/dm_helpers.h   |   4 +
 drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c   | 126 +++++----
 .../amd/display/dc/inc/hw/stream_encoder.h    |   2 +
 .../gpu/drm/amd/display/dc/inc/hw_sequencer.h |   2 +-
 .../gpu/drm/amd/display/dc/inc/link_enc_cfg.h |   5 +
 .../gpu/drm/amd/display/dc/inc/link_hwss.h    |   1 +
 .../display/dc/irq/dcn21/irq_service_dcn21.c  |  25 ++
 .../display/dc/irq/dcn21/irq_service_dcn21.h  |   2 +
 .../gpu/drm/amd/display/dc/irq/irq_service.c  |   2 +-
 .../gpu/drm/amd/display/dc/irq/irq_service.h  |   4 +
 .../dc/virtual/virtual_stream_encoder.c       |   2 +
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |   4 +
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   |   4 +-
 .../gpu/drm/amd/display/dmub/src/dmub_dcn31.c |   8 +
 .../gpu/drm/amd/display/dmub/src/dmub_dcn31.h |   2 +
 .../gpu/drm/amd/display/dmub/src/dmub_srv.c   |  10 +-
 .../gpu/drm/amd/display/include/dal_asic_id.h |   2 +-
 .../gpu/drm/amd/display/include/dpcd_defs.h   |   1 +
 .../amd/display/include/link_service_types.h  |  16 ++
 .../amd/display/modules/color/color_gamma.c   |  32 ++-
 70 files changed, 1528 insertions(+), 475 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h

-- 
2.25.1

[PATCH 01/33] drm/amd/display: Add DPCD writes at key points

[Mikita Lipski]

From: "Leo (Hanghong) Ma" <hanghong.ma@amd.com>

This reverts commit "Revert "Add DPCD writes at key points" ".
The following patch will fix the system hang issue.

Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Aric Cyr <aric.cyr@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |  7 ++++++
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  |  3 ++-
 .../drm/amd/display/dc/core/dc_link_hwss.c    | 13 ++++++++++-
 drivers/gpu/drm/amd/display/dc/dc.h           |  1 +
 .../amd/display/dc/dce/dce_stream_encoder.c   |  2 ++
 .../display/dc/dce110/dce110_hw_sequencer.c   | 22 ++++++++++++++-----
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |  4 ++--
 .../display/dc/dcn10/dcn10_stream_encoder.c   | 10 +++++++++
 .../display/dc/dcn10/dcn10_stream_encoder.h   |  2 ++
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    | 10 ++++++++-
 .../display/dc/dcn20/dcn20_stream_encoder.c   |  5 +++++
 .../display/dc/dcn20/dcn20_stream_encoder.h   |  1 +
 .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    |  2 +-
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |  2 +-
 .../amd/display/dc/inc/hw/stream_encoder.h    |  2 ++
 .../gpu/drm/amd/display/dc/inc/link_hwss.h    |  1 +
 .../dc/virtual/virtual_stream_encoder.c       |  2 ++
 .../gpu/drm/amd/display/include/dpcd_defs.h   |  1 +
 .../amd/display/include/link_service_types.h  | 16 ++++++++++++++
 19 files changed, 94 insertions(+), 12 deletions(-)

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 54ff4fb1ea03..f1c9ee53ac67 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3572,6 +3572,7 @@ void core_link_enable_stream(
 {
 	struct dc *dc = pipe_ctx->stream->ctx->dc;
 	struct dc_stream_state *stream = pipe_ctx->stream;
+	struct dc_link *link = stream->sink->link;
 	enum dc_status status;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	enum otg_out_mux_dest otg_out_dest = OUT_MUX_DIO;
@@ -3624,6 +3625,9 @@ void core_link_enable_stream(
 			stream->link->dpcd_caps.dprx_feature.bits.SST_SPLIT_SDP_CAP);
 #endif
 
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DP_STREAM_ATTR);
+
 	if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal))
 		pipe_ctx->stream_res.stream_enc->funcs->hdmi_set_stream_attribute(
 			pipe_ctx->stream_res.stream_enc,
@@ -3659,6 +3663,9 @@ void core_link_enable_stream(
 		resource_build_info_frame(pipe_ctx);
 		dc->hwss.update_info_frame(pipe_ctx);
 
+		if (dc_is_dp_signal(pipe_ctx->stream->signal))
+			dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_UPDATE_INFO_FRAME);
+
 		/* Do not touch link on seamless boot optimization. */
 		if (pipe_ctx->stream->apply_seamless_boot_optimization) {
 			pipe_ctx->stream->dpms_off = 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 e412a096a4b8..53c3c9c1a79d 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
@@ -2375,6 +2375,7 @@ bool perform_link_training_with_retries(
 #endif
 		link_enc->funcs->connect_dig_be_to_fe(link_enc,
 							pipe_ctx->stream_res.stream_enc->id, true);
+		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_BE);
 
 	for (j = 0; j < attempts; ++j) {
 
@@ -5267,7 +5268,7 @@ bool dc_link_dp_set_test_pattern(
 			 * MuteAudioEndpoint(pPathMode->pDisplayPath, true);
 			 */
 			/* Blank stream */
-			pipes->stream_res.stream_enc->funcs->dp_blank(pipe_ctx->stream_res.stream_enc);
+			pipes->stream_res.stream_enc->funcs->dp_blank(link, pipe_ctx->stream_res.stream_enc);
 		}
 
 		dp_set_hw_test_pattern(link, test_pattern,
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index 29b9c128c87c..58abfa5a7bac 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -62,6 +62,13 @@ void dp_receiver_power_ctrl(struct dc_link *link, bool on)
 			sizeof(state));
 }
 
+void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode)
+{
+	if (link->dc->debug.enable_driver_sequence_debug)
+		core_link_write_dpcd(link, DP_SOURCE_SEQUENCE,
+					&dp_test_mode, sizeof(dp_test_mode));
+}
+
 void dp_enable_link_phy(
 	struct dc_link *link,
 	enum signal_type signal,
@@ -158,6 +165,7 @@ void dp_enable_link_phy(
 	if (dmcu != NULL && dmcu->funcs->unlock_phy)
 		dmcu->funcs->unlock_phy(dmcu);
 
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_ENABLE_LINK_PHY);
 	dp_receiver_power_ctrl(link, true);
 }
 
@@ -276,6 +284,8 @@ void dp_disable_link_phy(struct dc_link *link, enum signal_type signal)
 			dmcu->funcs->unlock_phy(dmcu);
 	}
 
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DISABLE_LINK_PHY);
+
 	/* Clear current link setting.*/
 	memset(&link->cur_link_settings, 0,
 			sizeof(link->cur_link_settings));
@@ -407,6 +417,7 @@ void dp_set_hw_test_pattern(
 #else
 	encoder->funcs->dp_set_phy_pattern(encoder, &pattern_param);
 #endif
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_SET_SOURCE_PATTERN);
 }
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 #undef DC_LOGGER
@@ -428,7 +439,7 @@ void dp_retrain_link_dp_test(struct dc_link *link,
 			pipes[i].stream->link == link) {
 			udelay(100);
 
-			pipes[i].stream_res.stream_enc->funcs->dp_blank(
+			pipes[i].stream_res.stream_enc->funcs->dp_blank(link,
 					pipes[i].stream_res.stream_enc);
 
 			/* disable any test pattern that might be active */
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 0505081e4fe8..bcae2250a574 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -643,6 +643,7 @@ struct dc_debug_options {
 	bool force_enable_edp_fec;
 	/* FEC/PSR1 sequence enable delay in 100us */
 	uint8_t fec_enable_delay_in100us;
+	bool enable_driver_sequence_debug;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	bool disable_z10;
 	bool enable_sw_cntl_psr;
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index 8d4263da59f2..779bc92a2968 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -919,6 +919,7 @@ static void dce110_stream_encoder_stop_dp_info_packets(
 }
 
 static void dce110_stream_encoder_dp_blank(
+	struct dc_link *link,
 	struct stream_encoder *enc)
 {
 	struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc);
@@ -967,6 +968,7 @@ static void dce110_stream_encoder_dp_blank(
 
 /* output video stream to link encoder */
 static void dce110_stream_encoder_dp_unblank(
+	struct dc_link *link,
 	struct stream_encoder *enc,
 	const struct encoder_unblank_param *param)
 {
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 f660472e71fb..cf8fee721f30 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
@@ -57,7 +57,8 @@
 #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"
 #include "dce/dce_11_0_sh_mask.h"
@@ -1122,6 +1123,9 @@ void dce110_enable_audio_stream(struct pipe_ctx *pipe_ctx)
 		if (pipe_ctx->stream_res.audio)
 			pipe_ctx->stream_res.audio->enabled = true;
 	}
+
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(pipe_ctx->stream->link, DPCD_SOURCE_SEQ_AFTER_ENABLE_AUDIO_STREAM);
 }
 
 void dce110_disable_audio_stream(struct pipe_ctx *pipe_ctx)
@@ -1178,6 +1182,9 @@ void dce110_disable_audio_stream(struct pipe_ctx *pipe_ctx)
 		 * stream->stream_engine_id);
 		 */
 	}
+
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(pipe_ctx->stream->link, DPCD_SOURCE_SEQ_AFTER_DISABLE_AUDIO_STREAM);
 }
 
 void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
@@ -1224,7 +1231,8 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 			pipe_ctx->stream_res.stream_enc->id,
 			false);
 #endif
-
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DISCONNECT_DIG_FE_BE);
 }
 
 void dce110_unblank_stream(struct pipe_ctx *pipe_ctx,
@@ -1240,7 +1248,7 @@ void dce110_unblank_stream(struct pipe_ctx *pipe_ctx,
 	params.link_settings.link_rate = link_settings->link_rate;
 
 	if (dc_is_dp_signal(pipe_ctx->stream->signal))
-		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(pipe_ctx->stream_res.stream_enc, &params);
+		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(link, pipe_ctx->stream_res.stream_enc, &params);
 
 	if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) {
 		hws->funcs.edp_backlight_control(link, true);
@@ -1267,7 +1275,7 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
 #else
 	if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
 #endif
-		pipe_ctx->stream_res.stream_enc->funcs->dp_blank(pipe_ctx->stream_res.stream_enc);
+		pipe_ctx->stream_res.stream_enc->funcs->dp_blank(link, pipe_ctx->stream_res.stream_enc);
 
 		if (!dc_is_embedded_signal(pipe_ctx->stream->signal)) {
 			/*
@@ -1492,6 +1500,7 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 		struct dc *dc)
 {
 	struct dc_stream_state *stream = pipe_ctx->stream;
+	struct dc_link *link = stream->link;
 	struct drr_params params = {0};
 	unsigned int event_triggers = 0;
 	struct pipe_ctx *odm_pipe = pipe_ctx->next_odm_pipe;
@@ -1576,6 +1585,9 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 			pipe_ctx->stream_res.stream_enc,
 			pipe_ctx->stream_res.tg->inst);
 
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_OTG);
+
 	pipe_ctx->stream_res.opp->funcs->opp_set_dyn_expansion(
 			pipe_ctx->stream_res.opp,
 			COLOR_SPACE_YCBCR601,
@@ -1632,7 +1644,7 @@ static void power_down_encoders(struct dc *dc)
 	 * hurt for non-DP
 	 */
 	for (i = 0; i < dc->res_pool->stream_enc_count; i++) {
-		dc->res_pool->stream_enc[i]->funcs->dp_blank(
+		dc->res_pool->stream_enc[i]->funcs->dp_blank(dc->links[i],
 					dc->res_pool->stream_enc[i]);
 	}
 
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 70d47773c23c..b4cf2e92694c 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
@@ -1489,7 +1489,7 @@ void dcn10_init_hw(struct dc *dc)
 
 					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
 						if (fe == dc->res_pool->stream_enc[j]->id) {
-							dc->res_pool->stream_enc[j]->funcs->dp_blank(
+							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
 										dc->res_pool->stream_enc[j]);
 							break;
 						}
@@ -3678,7 +3678,7 @@ void dcn10_unblank_stream(struct pipe_ctx *pipe_ctx,
 	if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
 		if (params.timing.pixel_encoding == PIXEL_ENCODING_YCBCR420)
 			params.timing.pix_clk_100hz /= 2;
-		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(pipe_ctx->stream_res.stream_enc, &params);
+		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(link, pipe_ctx->stream_res.stream_enc, &params);
 	}
 
 	if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) {
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 bccefb6c22c8..b7d55212dc8f 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
@@ -29,6 +29,8 @@
 #include "dcn10_stream_encoder.h"
 #include "reg_helper.h"
 #include "hw_shared.h"
+#include "inc/link_dpcd.h"
+#include "dpcd_defs.h"
 
 #define DC_LOGGER \
 		enc1->base.ctx->logger
@@ -894,6 +896,7 @@ void enc1_stream_encoder_stop_dp_info_packets(
 }
 
 void enc1_stream_encoder_dp_blank(
+	struct dc_link *link,
 	struct stream_encoder *enc)
 {
 	struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
@@ -924,6 +927,8 @@ void enc1_stream_encoder_dp_blank(
 	/* disable DP stream */
 	REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0);
 
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DISABLE_DP_VID_STREAM);
+
 	/* the encoder stops sending the video stream
 	 * at the start of the vertical blanking.
 	 * Poll for DP_VID_STREAM_STATUS == 0
@@ -940,10 +945,13 @@ void enc1_stream_encoder_dp_blank(
 	 */
 
 	REG_UPDATE(DP_STEER_FIFO, DP_STEER_FIFO_RESET, true);
+
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_FIFO_STEER_RESET);
 }
 
 /* output video stream to link encoder */
 void enc1_stream_encoder_dp_unblank(
+	struct dc_link *link,
 	struct stream_encoder *enc,
 	const struct encoder_unblank_param *param)
 {
@@ -1010,6 +1018,8 @@ void enc1_stream_encoder_dp_unblank(
 	 */
 
 	REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, true);
+
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_ENABLE_DP_VID_STREAM);
 }
 
 void enc1_stream_encoder_set_avmute(
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.h
index 0d86df97878c..687d7e4bf7ca 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.h
@@ -627,9 +627,11 @@ void enc1_stream_encoder_stop_dp_info_packets(
 	struct stream_encoder *enc);
 
 void enc1_stream_encoder_dp_blank(
+	struct dc_link *link,
 	struct stream_encoder *enc);
 
 void enc1_stream_encoder_dp_unblank(
+	struct dc_link *link,
 	struct stream_encoder *enc,
 	const struct encoder_unblank_param *param);
 
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 b9276da87872..ffc0b9ab976f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -52,6 +52,8 @@
 #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"
 
 #define DC_LOGGER_INIT(logger)
 
@@ -2145,7 +2147,7 @@ void dcn20_unblank_stream(struct pipe_ctx *pipe_ctx,
 			params.timing.pix_clk_100hz /= 2;
 		pipe_ctx->stream_res.stream_enc->funcs->dp_set_odm_combine(
 				pipe_ctx->stream_res.stream_enc, params.opp_cnt > 1);
-		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(pipe_ctx->stream_res.stream_enc, &params);
+		pipe_ctx->stream_res.stream_enc->funcs->dp_unblank(link, pipe_ctx->stream_res.stream_enc, &params);
 	}
 
 	if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) {
@@ -2399,6 +2401,9 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 		link->link_enc->funcs->connect_dig_be_to_fe(
 			link->link_enc, pipe_ctx->stream_res.stream_enc->id, true);
 
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_BE);
+
 	if (pipe_ctx->plane_state && pipe_ctx->plane_state->flip_immediate != 1) {
 		if (link->dc->hwss.program_dmdata_engine)
 			link->dc->hwss.program_dmdata_engine(pipe_ctx);
@@ -2406,6 +2411,9 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 
 	link->dc->hwss.update_info_frame(pipe_ctx);
 
+	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_UPDATE_INFO_FRAME);
+
 	/* enable early control to avoid corruption on DP monitor*/
 	active_total_with_borders =
 			timing->h_addressable
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 e6307397e0d2..44f31b7b9ac9 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
@@ -29,6 +29,8 @@
 #include "dcn20_stream_encoder.h"
 #include "reg_helper.h"
 #include "hw_shared.h"
+#include "inc/link_dpcd.h"
+#include "dpcd_defs.h"
 
 #define DC_LOGGER \
 		enc1->base.ctx->logger
@@ -444,6 +446,7 @@ static bool is_two_pixels_per_containter(const struct dc_crtc_timing *timing)
 }
 
 void enc2_stream_encoder_dp_unblank(
+		struct dc_link *link,
 		struct stream_encoder *enc,
 		const struct encoder_unblank_param *param)
 {
@@ -522,6 +525,8 @@ void enc2_stream_encoder_dp_unblank(
 	 */
 
 	REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, true);
+
+	dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_ENABLE_DP_VID_STREAM);
 }
 
 static void enc2_dp_set_odm_combine(
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.h
index f3d1a0237bda..baa1e539f341 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.h
@@ -104,6 +104,7 @@ void enc2_stream_encoder_dp_set_stream_attribute(
 	uint32_t enable_sdp_splitting);
 
 void enc2_stream_encoder_dp_unblank(
+	struct dc_link *link,
 	struct stream_encoder *enc,
 	const struct encoder_unblank_param *param);
 
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 fafed1e4a998..b132ebed09d4 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -559,7 +559,7 @@ void dcn30_init_hw(struct dc *dc)
 
 					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
 						if (fe == dc->res_pool->stream_enc[j]->id) {
-							dc->res_pool->stream_enc[j]->funcs->dp_blank(
+							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
 										dc->res_pool->stream_enc[j]);
 							break;
 						}
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 3f2333ec67e2..7feba8a0d847 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -194,7 +194,7 @@ void dcn31_init_hw(struct dc *dc)
 
 					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
 						if (fe == dc->res_pool->stream_enc[j]->id) {
-							dc->res_pool->stream_enc[j]->funcs->dp_blank(
+							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
 										dc->res_pool->stream_enc[j]);
 							break;
 						}
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h b/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h
index 40a138a9593f..9f03fda5b965 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h
@@ -165,9 +165,11 @@ struct stream_encoder_funcs {
 		struct stream_encoder *enc);
 
 	void (*dp_blank)(
+		struct dc_link *link,
 		struct stream_encoder *enc);
 
 	void (*dp_unblank)(
+		struct dc_link *link,
 		struct stream_encoder *enc,
 		const struct encoder_unblank_param *param);
 
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h b/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
index fc1d289bb9fe..ba664bc49595 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
@@ -37,6 +37,7 @@ void dp_enable_link_phy(
 	const struct dc_link_settings *link_settings);
 
 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 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);
diff --git a/drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c
index 1053b165c139..42a29b712e0e 100644
--- a/drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c
@@ -69,9 +69,11 @@ static void virtual_stream_encoder_stop_dp_info_packets(
 	struct stream_encoder *enc) {}
 
 static void virtual_stream_encoder_dp_blank(
+	struct dc_link *link,
 	struct stream_encoder *enc) {}
 
 static void virtual_stream_encoder_dp_unblank(
+	struct dc_link *link,
 	struct stream_encoder *enc,
 	const struct encoder_unblank_param *param) {}
 
diff --git a/drivers/gpu/drm/amd/display/include/dpcd_defs.h b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
index 6fb7c0145cb6..ffd0df1701e6 100644
--- a/drivers/gpu/drm/amd/display/include/dpcd_defs.h
+++ b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
@@ -165,6 +165,7 @@ enum dpcd_psr_sink_states {
 	PSR_SINK_STATE_SINK_INTERNAL_ERROR = 7,
 };
 
+#define DP_SOURCE_SEQUENCE    		    0x30c
 #define DP_SOURCE_TABLE_REVISION	    0x310
 #define DP_SOURCE_PAYLOAD_SIZE		    0x311
 #define DP_SOURCE_SINK_CAP		    0x317
diff --git a/drivers/gpu/drm/amd/display/include/link_service_types.h b/drivers/gpu/drm/amd/display/include/link_service_types.h
index c729b50c4f20..9ffea7b40545 100644
--- a/drivers/gpu/drm/amd/display/include/link_service_types.h
+++ b/drivers/gpu/drm/amd/display/include/link_service_types.h
@@ -191,6 +191,22 @@ enum dp_panel_mode {
 	DP_PANEL_MODE_SPECIAL
 };
 
+enum dpcd_source_sequence {
+	DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_OTG = 1, /*done in apply_single_controller_ctx_to_hw */
+	DPCD_SOURCE_SEQ_AFTER_DP_STREAM_ATTR,         /*done in core_link_enable_stream */
+	DPCD_SOURCE_SEQ_AFTER_UPDATE_INFO_FRAME,      /*done in core_link_enable_stream/dcn20_enable_stream */
+	DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_BE,      /*done in perform_link_training_with_retries/dcn20_enable_stream */
+	DPCD_SOURCE_SEQ_AFTER_ENABLE_LINK_PHY,        /*done in dp_enable_link_phy */
+	DPCD_SOURCE_SEQ_AFTER_SET_SOURCE_PATTERN,     /*done in dp_set_hw_test_pattern */
+	DPCD_SOURCE_SEQ_AFTER_ENABLE_AUDIO_STREAM,    /*done in dce110_enable_audio_stream */
+	DPCD_SOURCE_SEQ_AFTER_ENABLE_DP_VID_STREAM,   /*done in enc1_stream_encoder_dp_unblank */
+	DPCD_SOURCE_SEQ_AFTER_DISABLE_DP_VID_STREAM,  /*done in enc1_stream_encoder_dp_blank */
+	DPCD_SOURCE_SEQ_AFTER_FIFO_STEER_RESET,       /*done in enc1_stream_encoder_dp_blank */
+	DPCD_SOURCE_SEQ_AFTER_DISABLE_AUDIO_STREAM,   /*done in dce110_disable_audio_stream */
+	DPCD_SOURCE_SEQ_AFTER_DISABLE_LINK_PHY,       /*done in dp_disable_link_phy */
+	DPCD_SOURCE_SEQ_AFTER_DISCONNECT_DIG_FE_BE,   /*done in dce110_disable_stream */
+};
+
 /* DPCD_ADDR_TRAINING_LANEx_SET registers value */
 union dpcd_training_lane_set {
 	struct {
-- 
2.25.1

[PATCH 02/33] drm/amd/display: Fix system hang at boot

[Mikita Lipski]

From: "Leo (Hanghong) Ma" <hanghong.ma@amd.com>

[Why]
During DQE's promotion test, system hang issue is found on linux
system;

[How]
1. Add NULL pointor check for the link in the sequence trace
   function;
2. Get the right link for the stream encoder before blank DP
   stream;

Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Reviewed-by: Aric Cyr <aric.cyr@amd.com>
---
 .../drm/amd/display/dc/core/dc_link_hwss.c    |  2 +-
 .../display/dc/dce110/dce110_hw_sequencer.c   | 27 ++++++++++++-------
 2 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index 58abfa5a7bac..b9570b7c557b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -64,7 +64,7 @@ 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)
 {
-	if (link->dc->debug.enable_driver_sequence_debug)
+	if (link != NULL && link->dc->debug.enable_driver_sequence_debug)
 		core_link_write_dpcd(link, DP_SOURCE_SEQUENCE,
 					&dp_test_mode, sizeof(dp_test_mode));
 }
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 cf8fee721f30..2ce668a23fe8 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
@@ -1638,23 +1638,30 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 
 static void power_down_encoders(struct dc *dc)
 {
-	int i;
-
-	/* do not know BIOS back-front mapping, simply blank all. It will not
-	 * hurt for non-DP
-	 */
-	for (i = 0; i < dc->res_pool->stream_enc_count; i++) {
-		dc->res_pool->stream_enc[i]->funcs->dp_blank(dc->links[i],
-					dc->res_pool->stream_enc[i]);
-	}
+	int i, j;
 
 	for (i = 0; i < dc->link_count; i++) {
 		enum signal_type signal = dc->links[i]->connector_signal;
 
 		if ((signal == SIGNAL_TYPE_EDP) ||
-			(signal == SIGNAL_TYPE_DISPLAY_PORT))
+			(signal == SIGNAL_TYPE_DISPLAY_PORT)) {
+			if (dc->links[i]->link_enc->funcs->get_dig_frontend &&
+				dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc)) {
+				unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
+									dc->links[i]->link_enc);
+
+				for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
+					if (fe == dc->res_pool->stream_enc[j]->id) {
+						dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
+									dc->res_pool->stream_enc[j]);
+						break;
+					}
+				}
+			}
+
 			if (!dc->links[i]->wa_flags.dp_keep_receiver_powered)
 				dp_receiver_power_ctrl(dc->links[i], false);
+		}
 
 		if (signal != SIGNAL_TYPE_EDP)
 			signal = SIGNAL_TYPE_NONE;
-- 
2.25.1

[PATCH 03/33] drm/amd/display: move bpp range decision in decide dsc bw range function

[Mikita Lipski]

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

[why]
Before get dsc bw range is used to compute DSC bw range
based on the given fixed bpp min/max input.
The new change will merge any specs, signal, timing specific
bpp range decision into this function. So the function needs to make
a decision with all aspects considered.

Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Reviewed-by: George Shen <george.shen@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_dsc.h     |   6 +-
 drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 126 ++++++++++----------
 2 files changed, 69 insertions(+), 63 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_dsc.h b/drivers/gpu/drm/amd/display/dc/dc_dsc.h
index c8cc6a448c36..684713b2cff7 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dsc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dsc.h
@@ -51,7 +51,6 @@ struct dc_dsc_policy {
 	int min_slice_height; // Must not be less than 8
 	uint32_t max_target_bpp;
 	uint32_t min_target_bpp;
-	uint32_t preferred_bpp_x16;
 	bool enable_dsc_when_not_needed;
 };
 
@@ -86,6 +85,11 @@ uint32_t dc_dsc_stream_bandwidth_overhead_in_kbps(
 		const int num_slices_h,
 		const bool is_dp);
 
+/* TODO - Hardware/specs limitation should be owned by dc dsc and returned to DM,
+ * and DM can choose to OVERRIDE the limitation on CASE BY CASE basis.
+ * Hardware/specs limitation should not be writable by DM.
+ * It should be decoupled from DM specific policy and named differently.
+ */
 void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing,
 		uint32_t max_target_bpp_limit_override_x16,
 		struct dc_dsc_policy *policy);
diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
index 1e30a742ae01..0321b4446e05 100644
--- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
+++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
@@ -40,8 +40,15 @@ static bool dsc_policy_enable_dsc_when_not_needed;
 
 static bool dsc_policy_disable_dsc_stream_overhead;
 
+#ifndef MAX
+#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#endif
+#ifndef MIN
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
+
 /* Forward Declerations */
-static void get_dsc_bandwidth_range(
+static bool decide_dsc_bandwidth_range(
 		const uint32_t min_bpp_x16,
 		const uint32_t max_bpp_x16,
 		const uint32_t num_slices_h,
@@ -356,7 +363,7 @@ bool dc_dsc_compute_bandwidth_range(
 				dsc_min_slice_height_override, max_bpp_x16, &config);
 
 	if (is_dsc_possible)
-		get_dsc_bandwidth_range(min_bpp_x16, max_bpp_x16,
+		is_dsc_possible = decide_dsc_bandwidth_range(min_bpp_x16, max_bpp_x16,
 				config.num_slices_h, &dsc_common_caps, timing, range);
 
 	return is_dsc_possible;
@@ -481,10 +488,12 @@ static uint32_t compute_bpp_x16_from_target_bandwidth(
 	return dc_fixpt_floor(bpp_x16);
 }
 
-/* Get DSC bandwidth range based on [min_bpp, max_bpp] target bitrate range, and timing's pixel clock
- * and uncompressed bandwidth.
+/* Decide DSC bandwidth range based on signal, timing, specs specific and input min and max
+ * requirements.
+ * The range output includes decided min/max target bpp, the respective bandwidth requirements
+ * and native timing bandwidth requirement when DSC is not used.
  */
-static void get_dsc_bandwidth_range(
+static bool decide_dsc_bandwidth_range(
 		const uint32_t min_bpp_x16,
 		const uint32_t max_bpp_x16,
 		const uint32_t num_slices_h,
@@ -492,39 +501,45 @@ static void get_dsc_bandwidth_range(
 		const struct dc_crtc_timing *timing,
 		struct dc_dsc_bw_range *range)
 {
-	/* native stream bandwidth */
-	range->stream_kbps = dc_bandwidth_in_kbps_from_timing(timing);
-
-	/* max dsc target bpp */
-	range->max_kbps = dc_dsc_stream_bandwidth_in_kbps(timing,
-			max_bpp_x16, num_slices_h, dsc_caps->is_dp);
-	range->max_target_bpp_x16 = max_bpp_x16;
-	if (range->max_kbps > range->stream_kbps) {
-		/* max dsc target bpp is capped to native bandwidth */
-		range->max_kbps = range->stream_kbps;
-		range->max_target_bpp_x16 = compute_bpp_x16_from_target_bandwidth(
-				range->max_kbps, timing, num_slices_h,
-				dsc_caps->bpp_increment_div,
-				dsc_caps->is_dp);
+	uint32_t preferred_bpp_x16 = timing->dsc_fixed_bits_per_pixel_x16;
+
+	memset(range, 0, sizeof(*range));
+
+	/* apply signal, timing, specs and explicitly specified DSC range requirements */
+	if (preferred_bpp_x16) {
+		if (preferred_bpp_x16 <= max_bpp_x16 &&
+				preferred_bpp_x16 >= min_bpp_x16) {
+			range->max_target_bpp_x16 = preferred_bpp_x16;
+			range->min_target_bpp_x16 = preferred_bpp_x16;
+		}
+	}
+	else {
+		range->max_target_bpp_x16 = max_bpp_x16;
+		range->min_target_bpp_x16 = min_bpp_x16;
 	}
 
-	/* min dsc target bpp */
-	range->min_kbps = dc_dsc_stream_bandwidth_in_kbps(timing,
-			min_bpp_x16, num_slices_h, dsc_caps->is_dp);
-	range->min_target_bpp_x16 = min_bpp_x16;
-	if (range->min_kbps > range->max_kbps) {
-		/* min dsc target bpp is capped to max dsc bandwidth*/
-		range->min_kbps = range->max_kbps;
-		range->min_target_bpp_x16 = range->max_target_bpp_x16;
+	/* populate output structure */
+	if (range->max_target_bpp_x16 >= range->min_target_bpp_x16 && range->min_target_bpp_x16 > 0) {
+		/* native stream bandwidth */
+		range->stream_kbps = dc_bandwidth_in_kbps_from_timing(timing);
+
+		/* max dsc target bpp */
+		range->max_kbps = dc_dsc_stream_bandwidth_in_kbps(timing,
+				range->max_target_bpp_x16, num_slices_h, dsc_caps->is_dp);
+
+		/* min dsc target bpp */
+		range->min_kbps = dc_dsc_stream_bandwidth_in_kbps(timing,
+				range->min_target_bpp_x16, num_slices_h, dsc_caps->is_dp);
 	}
+
+	return range->max_kbps >= range->min_kbps && range->min_kbps > 0;
 }
 
 /* Decides if DSC should be used and calculates target bpp if it should, applying DSC policy.
  *
  * Returns:
- *     - 'true' if DSC was required by policy and was successfully applied
- *     - 'false' if DSC was not necessary (e.g. if uncompressed stream fits 'target_bandwidth_kbps'),
- *        or if it couldn't be applied based on DSC policy.
+ *     - 'true' if target bpp is decided
+ *     - 'false' if target bpp cannot be decided (e.g. cannot fit even with min DSC bpp),
  */
 static bool decide_dsc_target_bpp_x16(
 		const struct dc_dsc_policy *policy,
@@ -534,40 +549,29 @@ static bool decide_dsc_target_bpp_x16(
 		const int num_slices_h,
 		int *target_bpp_x16)
 {
-	bool should_use_dsc = false;
 	struct dc_dsc_bw_range range;
 
-	memset(&range, 0, sizeof(range));
-
-	get_dsc_bandwidth_range(policy->min_target_bpp * 16, policy->max_target_bpp * 16,
-			num_slices_h, dsc_common_caps, timing, &range);
-	if (!policy->enable_dsc_when_not_needed && target_bandwidth_kbps >= range.stream_kbps) {
-		/* enough bandwidth without dsc */
-		*target_bpp_x16 = 0;
-		should_use_dsc = false;
-	} else if (policy->preferred_bpp_x16 > 0 &&
-			policy->preferred_bpp_x16 <= range.max_target_bpp_x16 &&
-			policy->preferred_bpp_x16 >= range.min_target_bpp_x16) {
-		*target_bpp_x16 = policy->preferred_bpp_x16;
-		should_use_dsc = true;
-	} else if (target_bandwidth_kbps >= range.max_kbps) {
-		/* use max target bpp allowed */
-		*target_bpp_x16 = range.max_target_bpp_x16;
-		should_use_dsc = true;
-	} else if (target_bandwidth_kbps >= range.min_kbps) {
-		/* use target bpp that can take entire target bandwidth */
-		*target_bpp_x16 = compute_bpp_x16_from_target_bandwidth(
-				target_bandwidth_kbps, timing, num_slices_h,
-				dsc_common_caps->bpp_increment_div,
-				dsc_common_caps->is_dp);
-		should_use_dsc = true;
-	} else {
-		/* not enough bandwidth to fulfill minimum requirement */
-		*target_bpp_x16 = 0;
-		should_use_dsc = false;
+	*target_bpp_x16 = 0;
+
+	if (decide_dsc_bandwidth_range(policy->min_target_bpp * 16, policy->max_target_bpp * 16,
+			num_slices_h, dsc_common_caps, timing, &range)) {
+		if (target_bandwidth_kbps >= range.stream_kbps) {
+			if (policy->enable_dsc_when_not_needed)
+				/* enable max bpp even dsc is not needed */
+				*target_bpp_x16 = range.max_target_bpp_x16;
+		} else if (target_bandwidth_kbps >= range.max_kbps) {
+			/* use max target bpp allowed */
+			*target_bpp_x16 = range.max_target_bpp_x16;
+		} else if (target_bandwidth_kbps >= range.min_kbps) {
+			/* use target bpp that can take entire target bandwidth */
+			*target_bpp_x16 = compute_bpp_x16_from_target_bandwidth(
+					target_bandwidth_kbps, timing, num_slices_h,
+					dsc_common_caps->bpp_increment_div,
+					dsc_common_caps->is_dp);
+		}
 	}
 
-	return should_use_dsc;
+	return *target_bpp_x16 != 0;
 }
 
 #define MIN_AVAILABLE_SLICES_SIZE  4
@@ -1059,8 +1063,6 @@ void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing,
 		return;
 	}
 
-	policy->preferred_bpp_x16 = timing->dsc_fixed_bits_per_pixel_x16;
-
 	/* internal upper limit, default 16 bpp */
 	if (policy->max_target_bpp > dsc_policy_max_target_bpp_limit)
 		policy->max_target_bpp = dsc_policy_max_target_bpp_limit;
-- 
2.25.1

[PATCH 04/33] drm/amd/display: update conditions to do dfp cap ext validation

[Mikita Lipski]

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

[why]
According to DP specs dfp cap ext validation is only for branch
device withou 128b/132b channel coding support and
downstream of the branch device doesn't have compression.
Therefore we are adding conditions to only do dfp cap
extension validation for branch devcie supporting 8b/10b
channel coding only and it has no DSC passthrough capability.

Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Reviewed-by: George Shen <george.shen@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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 f1c9ee53ac67..5d9460e0dbab 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2606,7 +2606,9 @@ static bool dp_active_dongle_validate_timing(
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	}
 
-	if (dongle_caps->dfp_cap_ext.supported) {
+	if (dpcd_caps->channel_coding_cap.bits.DP_128b_132b_SUPPORTED == 0 &&
+			dpcd_caps->dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_PASSTHROUGH_SUPPORT == 0 &&
+			dongle_caps->dfp_cap_ext.supported) {
 
 		if (dongle_caps->dfp_cap_ext.max_pixel_rate_in_mps < (timing->pix_clk_100hz / 10000))
 			return false;
-- 
2.25.1

[PATCH 05/33] drm/amd/display: Add option to defer works of hpd_rx_irq

[Mikita Lipski]

From: Wayne Lin <Wayne.Lin@amd.com>

[Why & How]
Due to some code flow constraints, we need to defer dc_lock needed works
from dc_link_handle_hpd_rx_irq(). Thus, do following changes:

* Change allow_hpd_rx_irq() from static to public
* Change handle_automated_test() from static to public
* Extract link lost handling flow out from dc_link_handle_hpd_rx_irq()
  and put those into a new function dc_link_dp_handle_link_loss()
* Add one option parameter to decide whether defer works within
  dc_link_handle_hpd_rx_irq()

Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
---
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 92 ++++++++++++-------
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  3 +
 2 files changed, 63 insertions(+), 32 deletions(-)

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 53c3c9c1a79d..22455113ba9d 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
@@ -3432,7 +3432,7 @@ void decide_link_settings(struct dc_stream_state *stream,
 }
 
 /*************************Short Pulse IRQ***************************/
-static bool allow_hpd_rx_irq(const struct dc_link *link)
+bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link)
 {
 	/*
 	 * Don't handle RX IRQ unless one of following is met:
@@ -3941,7 +3941,7 @@ static void dp_test_get_audio_test_data(struct dc_link *link, bool disable_video
 	}
 }
 
-static void handle_automated_test(struct dc_link *link)
+void dc_link_dp_handle_automated_test(struct dc_link *link)
 {
 	union test_request test_request;
 	union test_response test_response;
@@ -3990,17 +3990,50 @@ static void handle_automated_test(struct dc_link *link)
 			sizeof(test_response));
 }
 
-bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss)
+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) {
+			core_link_enable_stream(link->dc->current_state, pipe_ctx);
+		}
+	}
+}
+
+static bool 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;
-	struct pipe_ctx *pipe_ctx;
-	int i;
 
 	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*/
@@ -4032,11 +4065,14 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
 			&device_service_clear.raw,
 			sizeof(device_service_clear.raw));
 		device_service_clear.raw = 0;
-		handle_automated_test(link);
+		if (defer_handling && has_left_work)
+			*has_left_work = true;
+		else
+			dc_link_dp_handle_automated_test(link);
 		return false;
 	}
 
-	if (!allow_hpd_rx_irq(link)) {
+	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;
@@ -4050,12 +4086,18 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
 	 * 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 (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 (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
@@ -4072,29 +4114,10 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
 					sizeof(hpd_irq_dpcd_data),
 					"Status: ");
 
-		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 false;
-
-
-		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)
-				core_link_enable_stream(link->dc->current_state, pipe_ctx);
-		}
+		if (defer_handling && has_left_work)
+			*has_left_work = true;
+		else
+			dc_link_dp_handle_link_loss(link);
 
 		status = false;
 		if (out_link_loss)
@@ -4120,6 +4143,11 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
 	return status;
 }
 
+bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss)
+{
+	return handle_hpd_rx_irq(link, out_hpd_irq_dpcd_data, out_link_loss, false, NULL);
+}
+
 /*query dpcd for version and mst cap addresses*/
 bool is_mst_supported(struct dc_link *link)
 {
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 4fdb24ba24af..bb515d640965 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -315,6 +315,9 @@ bool dc_link_wait_for_t12(struct dc_link *link);
 enum dc_status read_hpd_rx_irq_data(
 	struct dc_link *link,
 	union hpd_irq_data *irq_data);
+void dc_link_dp_handle_automated_test(struct dc_link *link);
+void dc_link_dp_handle_link_loss(struct dc_link *link);
+bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link);
 
 struct dc_sink_init_data;
 
-- 
2.25.1

[PATCH 06/33] drm/amd/display: Fork thread to offload work of hpd_rx_irq

[Mikita Lipski]

From: Wayne Lin <Wayne.Lin@amd.com>

[Why]
Currently, we will try to get dm.dc_lock in handle_hpd_rx_irq() when
link lost happened, which is risky and could cause deadlock.
e.g. If we are under procedure to enable MST streams and then monitor
happens to toggle short hpd to notify link lost, then
handle_hpd_rx_irq() will get blocked due to stream enabling flow has
dc_lock. However, under MST, enabling streams involves communication
with remote sinks which need to use handle_hpd_rx_irq() to handle
sideband messages. Thus, we have deadlock here.

[How]
Target is to have handle_hpd_rx_irq() finished as soon as possilble.
Hence we can react to interrupt quickly. Besides, we should avoid to
grabe dm.dc_lock within handle_hpd_rx_irq() to avoid deadlock situation.

Firstly, revert patches which introduced to use dm.dc_lock in
handle_hpd_rx_irq():

* commit ("drm/amd/display: NULL pointer error during ")

* commit ("drm/amd/display: Only one display lights up while using MST")

* commit ("drm/amd/display: take dc_lock in short pulse handler only")

Instead, create work to handle irq events which needs dm.dc_lock.
Besides:

* Create struct hpd_rx_irq_offload_work_queue for each link to handle
  its short hpd events

* Avoid to handle link lost/ automated test if the link is disconnected

* Defer dc_lock needed works in dc_link_handle_hpd_rx_irq(). This
  function should just handle simple stuff for us (e.g. DPCD R/W).
  However, deferred works should still be handled by the order that
  dc_link_handle_hpd_rx_irq() used to be.

* Change function name dm_handle_hpd_rx_irq() to
  dm_handle_mst_sideband_msg() to be more specific

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 203 ++++++++++++++----
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  49 ++++-
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  |   9 +-
 drivers/gpu/drm/amd/display/dc/dc_link.h      |   6 +-
 4 files changed, 219 insertions(+), 48 deletions(-)

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 53363728dbbd..c8ef72702e60 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1208,6 +1208,83 @@ static void vblank_control_worker(struct work_struct *work)
 }
 
 #endif
+
+static void dm_handle_hpd_rx_offload_work(struct work_struct *work)
+{
+	struct hpd_rx_irq_offload_work *offload_work;
+	struct amdgpu_dm_connector *aconnector;
+	struct dc_link *dc_link;
+	struct amdgpu_device *adev;
+	enum dc_connection_type new_connection_type = dc_connection_none;
+	unsigned long flags;
+
+	offload_work = container_of(work, struct hpd_rx_irq_offload_work, work);
+	aconnector = offload_work->offload_wq->aconnector;
+
+	if (!aconnector) {
+		DRM_ERROR("Can't retrieve aconnector in hpd_rx_irq_offload_work");
+		goto skip;
+	}
+
+	adev = drm_to_adev(aconnector->base.dev);
+	dc_link = aconnector->dc_link;
+
+	mutex_lock(&aconnector->hpd_lock);
+	if (!dc_link_detect_sink(dc_link, &new_connection_type))
+		DRM_ERROR("KMS: Failed to detect connector\n");
+	mutex_unlock(&aconnector->hpd_lock);
+
+	if (new_connection_type == dc_connection_none)
+		goto skip;
+
+	if (amdgpu_in_reset(adev))
+		goto skip;
+
+	mutex_lock(&adev->dm.dc_lock);
+	if (offload_work->data.bytes.device_service_irq.bits.AUTOMATED_TEST)
+		dc_link_dp_handle_automated_test(dc_link);
+	else if ((dc_link->connector_signal != SIGNAL_TYPE_EDP) &&
+			hpd_rx_irq_check_link_loss_status(dc_link, &offload_work->data) &&
+			dc_link_dp_allow_hpd_rx_irq(dc_link)) {
+		dc_link_dp_handle_link_loss(dc_link);
+		spin_lock_irqsave(&offload_work->offload_wq->offload_lock, flags);
+		offload_work->offload_wq->is_handling_link_loss = false;
+		spin_unlock_irqrestore(&offload_work->offload_wq->offload_lock, flags);
+	}
+	mutex_unlock(&adev->dm.dc_lock);
+
+skip:
+	kfree(offload_work);
+
+}
+
+static struct hpd_rx_irq_offload_work_queue *hpd_rx_irq_create_workqueue(struct dc *dc)
+{
+	int max_caps = dc->caps.max_links;
+	int i = 0;
+	struct hpd_rx_irq_offload_work_queue *hpd_rx_offload_wq = NULL;
+
+	hpd_rx_offload_wq = kcalloc(max_caps, sizeof(*hpd_rx_offload_wq), GFP_KERNEL);
+
+	if (!hpd_rx_offload_wq)
+		return NULL;
+
+
+	for (i = 0; i < max_caps; i++) {
+		hpd_rx_offload_wq[i].wq =
+				    create_singlethread_workqueue("amdgpu_dm_hpd_rx_offload_wq");
+
+		if (hpd_rx_offload_wq[i].wq == NULL) {
+			DRM_ERROR("create amdgpu_dm_hpd_rx_offload_wq fail!");
+			return NULL;
+		}
+
+		spin_lock_init(&hpd_rx_offload_wq[i].offload_lock);
+	}
+
+	return hpd_rx_offload_wq;
+}
+
 static int amdgpu_dm_init(struct amdgpu_device *adev)
 {
 	struct dc_init_data init_data;
@@ -1326,6 +1403,12 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 
 	dc_hardware_init(adev->dm.dc);
 
+	adev->dm.hpd_rx_offload_wq = hpd_rx_irq_create_workqueue(adev->dm.dc);
+	if (!adev->dm.hpd_rx_offload_wq) {
+		DRM_ERROR("amdgpu: failed to create hpd rx offload workqueue.\n");
+		goto error;
+	}
+
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	if ((adev->flags & AMD_IS_APU) && (adev->asic_type >= CHIP_CARRIZO)) {
 		struct dc_phy_addr_space_config pa_config;
@@ -1505,6 +1588,18 @@ static void amdgpu_dm_fini(struct amdgpu_device *adev)
 		adev->dm.freesync_module = NULL;
 	}
 
+	if (adev->dm.hpd_rx_offload_wq) {
+		for (i = 0; i < adev->dm.dc->caps.max_links; i++) {
+			if (adev->dm.hpd_rx_offload_wq[i].wq) {
+				destroy_workqueue(adev->dm.hpd_rx_offload_wq[i].wq);
+				adev->dm.hpd_rx_offload_wq[i].wq = NULL;
+			}
+		}
+
+		kfree(adev->dm.hpd_rx_offload_wq);
+		adev->dm.hpd_rx_offload_wq = NULL;
+	}
+
 	mutex_destroy(&adev->dm.audio_lock);
 	mutex_destroy(&adev->dm.dc_lock);
 
@@ -2123,6 +2218,16 @@ static enum dc_status amdgpu_dm_commit_zero_streams(struct dc *dc)
 	return res;
 }
 
+static void hpd_rx_irq_work_suspend(struct amdgpu_display_manager *dm)
+{
+	int i;
+
+	if (dm->hpd_rx_offload_wq) {
+		for (i = 0; i < dm->dc->caps.max_links; i++)
+			flush_workqueue(dm->hpd_rx_offload_wq[i].wq);
+	}
+}
+
 static int dm_suspend(void *handle)
 {
 	struct amdgpu_device *adev = handle;
@@ -2144,6 +2249,8 @@ static int dm_suspend(void *handle)
 
 		amdgpu_dm_irq_suspend(adev);
 
+		hpd_rx_irq_work_suspend(dm);
+
 		return ret;
 	}
 
@@ -2154,6 +2261,8 @@ static int dm_suspend(void *handle)
 
 	amdgpu_dm_irq_suspend(adev);
 
+	hpd_rx_irq_work_suspend(dm);
+
 	dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D3);
 
 	return 0;
@@ -2826,8 +2935,7 @@ static void handle_hpd_irq(void *param)
 
 }
 
-
-static void dm_handle_hpd_rx_irq(struct amdgpu_dm_connector *aconnector)
+static void dm_handle_mst_sideband_msg(struct amdgpu_dm_connector *aconnector)
 {
 	uint8_t esi[DP_PSR_ERROR_STATUS - DP_SINK_COUNT_ESI] = { 0 };
 	uint8_t dret;
@@ -2905,6 +3013,25 @@ static void dm_handle_hpd_rx_irq(struct amdgpu_dm_connector *aconnector)
 		DRM_DEBUG_DRIVER("Loop exceeded max iterations\n");
 }
 
+static void schedule_hpd_rx_offload_work(struct hpd_rx_irq_offload_work_queue *offload_wq,
+							union hpd_irq_data hpd_irq_data)
+{
+	struct hpd_rx_irq_offload_work *offload_work =
+				kzalloc(sizeof(*offload_work), GFP_KERNEL);
+
+	if (!offload_work) {
+		DRM_ERROR("Failed to allocate hpd_rx_irq_offload_work.\n");
+		return;
+	}
+
+	INIT_WORK(&offload_work->work, dm_handle_hpd_rx_offload_work);
+	offload_work->data = hpd_irq_data;
+	offload_work->offload_wq = offload_wq;
+
+	queue_work(offload_wq->wq, &offload_work->work);
+	DRM_DEBUG_KMS("queue work to handle hpd_rx offload work");
+}
+
 static void handle_hpd_rx_irq(void *param)
 {
 	struct amdgpu_dm_connector *aconnector = (struct amdgpu_dm_connector *)param;
@@ -2916,14 +3043,16 @@ static void handle_hpd_rx_irq(void *param)
 	enum dc_connection_type new_connection_type = dc_connection_none;
 	struct amdgpu_device *adev = drm_to_adev(dev);
 	union hpd_irq_data hpd_irq_data;
-	bool lock_flag = 0;
+	bool link_loss = false;
+	bool has_left_work = false;
+	int idx = aconnector->base.index;
+	struct hpd_rx_irq_offload_work_queue *offload_wq = &adev->dm.hpd_rx_offload_wq[idx];
 
 	memset(&hpd_irq_data, 0, sizeof(hpd_irq_data));
 
 	if (adev->dm.disable_hpd_irq)
 		return;
 
-
 	/*
 	 * TODO:Temporary add mutex to protect hpd interrupt not have a gpio
 	 * conflict, after implement i2c helper, this mutex should be
@@ -2931,43 +3060,41 @@ static void handle_hpd_rx_irq(void *param)
 	 */
 	mutex_lock(&aconnector->hpd_lock);
 
-	read_hpd_rx_irq_data(dc_link, &hpd_irq_data);
+	result = dc_link_handle_hpd_rx_irq(dc_link, &hpd_irq_data,
+						&link_loss, true, &has_left_work);
 
-	if ((dc_link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||
-		(dc_link->type == dc_connection_mst_branch)) {
-		if (hpd_irq_data.bytes.device_service_irq.bits.UP_REQ_MSG_RDY) {
-			result = true;
-			dm_handle_hpd_rx_irq(aconnector);
-			goto out;
-		} else if (hpd_irq_data.bytes.device_service_irq.bits.DOWN_REP_MSG_RDY) {
-			result = false;
-			dm_handle_hpd_rx_irq(aconnector);
+	if (!has_left_work)
+		goto out;
+
+	if (hpd_irq_data.bytes.device_service_irq.bits.AUTOMATED_TEST) {
+		schedule_hpd_rx_offload_work(offload_wq, hpd_irq_data);
+		goto out;
+	}
+
+	if (dc_link_dp_allow_hpd_rx_irq(dc_link)) {
+		if (hpd_irq_data.bytes.device_service_irq.bits.UP_REQ_MSG_RDY ||
+			hpd_irq_data.bytes.device_service_irq.bits.DOWN_REP_MSG_RDY) {
+			dm_handle_mst_sideband_msg(aconnector);
 			goto out;
 		}
-	}
 
-	/*
-	 * TODO: We need the lock to avoid touching DC state while it's being
-	 * modified during automated compliance testing, or when link loss
-	 * happens. While this should be split into subhandlers and proper
-	 * interfaces to avoid having to conditionally lock like this in the
-	 * outer layer, we need this workaround temporarily to allow MST
-	 * lightup in some scenarios to avoid timeout.
-	 */
-	if (!amdgpu_in_reset(adev) &&
-	    (hpd_rx_irq_check_link_loss_status(dc_link, &hpd_irq_data) ||
-	     hpd_irq_data.bytes.device_service_irq.bits.AUTOMATED_TEST)) {
-		mutex_lock(&adev->dm.dc_lock);
-		lock_flag = 1;
-	}
+		if (link_loss) {
+			bool skip = false;
 
-#ifdef CONFIG_DRM_AMD_DC_HDCP
-	result = dc_link_handle_hpd_rx_irq(dc_link, &hpd_irq_data, NULL);
-#else
-	result = dc_link_handle_hpd_rx_irq(dc_link, NULL, NULL);
-#endif
-	if (!amdgpu_in_reset(adev) && lock_flag)
-		mutex_unlock(&adev->dm.dc_lock);
+			spin_lock(&offload_wq->offload_lock);
+			skip = offload_wq->is_handling_link_loss;
+
+			if (!skip)
+				offload_wq->is_handling_link_loss = true;
+
+			spin_unlock(&offload_wq->offload_lock);
+
+			if (!skip)
+				schedule_hpd_rx_offload_work(offload_wq, hpd_irq_data);
+
+			goto out;
+		}
+	}
 
 out:
 	if (result && !is_mst_root_connector) {
@@ -3052,6 +3179,10 @@ static void register_hpd_handlers(struct amdgpu_device *adev)
 			amdgpu_dm_irq_register_interrupt(adev, &int_params,
 					handle_hpd_rx_irq,
 					(void *) aconnector);
+
+			if (adev->dm.hpd_rx_offload_wq)
+				adev->dm.hpd_rx_offload_wq[connector->index].aconnector =
+					aconnector;
 		}
 	}
 }
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index be796c2fed7d..a038c70037b5 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -171,6 +171,48 @@ struct dal_allocation {
 	u64 gpu_addr;
 };
 
+/**
+ * struct hpd_rx_irq_offload_work_queue - Work queue to handle hpd_rx_irq
+ * offload work
+ */
+struct hpd_rx_irq_offload_work_queue {
+	/**
+	 * @wq: workqueue structure to queue offload work.
+	 */
+	struct workqueue_struct *wq;
+	/**
+	 * @offload_lock: To protect fields of offload work queue.
+	 */
+	spinlock_t offload_lock;
+	/**
+	 * @is_handling_link_loss: Used to prevent inserting link loss event when
+	 * we're handling link loss
+	 */
+	bool is_handling_link_loss;
+	/**
+	 * @aconnector: The aconnector that this work queue is attached to
+	 */
+	struct amdgpu_dm_connector *aconnector;
+};
+
+/**
+ * struct hpd_rx_irq_offload_work - hpd_rx_irq offload work structure
+ */
+struct hpd_rx_irq_offload_work {
+	/**
+	 * @work: offload work
+	 */
+	struct work_struct work;
+	/**
+	 * @data: reference irq data which is used while handling offload work
+	 */
+	union hpd_irq_data data;
+	/**
+	 * @offload_wq: offload work queue that this work is queued to
+	 */
+	struct hpd_rx_irq_offload_work_queue *offload_wq;
+};
+
 /**
  * struct amdgpu_display_manager - Central amdgpu display manager device
  *
@@ -461,7 +503,12 @@ struct amdgpu_display_manager {
 	 */
 	struct crc_rd_work *crc_rd_wrk;
 #endif
-
+	/**
+	 * @hpd_rx_offload_wq:
+	 *
+	 * Work queue to offload works of hpd_rx_irq
+	 */
+	struct hpd_rx_irq_offload_work_queue *hpd_rx_offload_wq;
 	/**
 	 * @mst_encoders:
 	 *
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 22455113ba9d..4d1ac9836dca 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
@@ -2693,7 +2693,7 @@ static struct dc_link_settings get_max_link_cap(struct dc_link *link)
 	return max_link_cap;
 }
 
-enum dc_status read_hpd_rx_irq_data(
+static enum dc_status read_hpd_rx_irq_data(
 	struct dc_link *link,
 	union hpd_irq_data *irq_data)
 {
@@ -4021,7 +4021,7 @@ void dc_link_dp_handle_link_loss(struct dc_link *link)
 	}
 }
 
-static bool handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss,
+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} } } };
@@ -4143,11 +4143,6 @@ static bool handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_
 	return status;
 }
 
-bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss)
-{
-	return handle_hpd_rx_irq(link, out_hpd_irq_dpcd_data, out_link_loss, false, NULL);
-}
-
 /*query dpcd for version and mst cap addresses*/
 bool is_mst_supported(struct dc_link *link)
 {
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index bb515d640965..56340a176554 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -303,7 +303,8 @@ enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx);
  * false - no change in Downstream port status. No further action required
  * from DM. */
 bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
-		union hpd_irq_data *hpd_irq_dpcd_data, bool *out_link_loss);
+		union hpd_irq_data *hpd_irq_dpcd_data, bool *out_link_loss,
+		bool defer_handling, bool *has_left_work);
 
 /*
  * On eDP links this function call will stall until T12 has elapsed.
@@ -312,9 +313,6 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
  */
 bool dc_link_wait_for_t12(struct dc_link *link);
 
-enum dc_status read_hpd_rx_irq_data(
-	struct dc_link *link,
-	union hpd_irq_data *irq_data);
 void dc_link_dp_handle_automated_test(struct dc_link *link);
 void dc_link_dp_handle_link_loss(struct dc_link *link);
 bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link);
-- 
2.25.1

[PATCH 07/33] drm/amd/display: unblock abm when odm is enabled only on configs that support it

[Mikita Lipski]

From: Josip Pavic <Josip.Pavic@amd.com>

[Why]
When ODM is enabled, ABM is blocked on dcn31 but unblocked on dcn30.

Since the dcn31 firmware is now able to handle ABM interop with ODM, it
is no longer necessary to block ABM when ODM is enabled.

Since the dcn30 firmware does not handle ABM interop with ODM, leaving
that combination unblocked can lead to one side of the screen appearing
brighter than the other.

[How]
When ODM is enabled, unblock abm on dcn31 and block it on dcn30

Reviewed-by: Anthony Koo <anthony.koo@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c |  1 +
 .../gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c    | 15 ---------------
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c |  1 -
 3 files changed, 1 insertion(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c
index 3a5b53dd2f6d..93f32a312fee 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c
@@ -100,6 +100,7 @@ static const struct hw_sequencer_funcs dcn30_funcs = {
 	.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,
 	.get_dcc_en_bits = dcn10_get_dcc_en_bits,
 	.update_visual_confirm_color = dcn20_update_visual_confirm_color,
+	.is_abm_supported = dcn21_is_abm_supported
 };
 
 static const struct hwseq_private_funcs dcn30_private_funcs = {
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 7feba8a0d847..2434232fb3f5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -595,18 +595,3 @@ void dcn31_reset_hw_ctx_wrap(
 		}
 	}
 }
-
-bool dcn31_is_abm_supported(struct dc *dc,
-		struct dc_state *context, struct dc_stream_state *stream)
-{
-	int i;
-
-	for (i = 0; i < dc->res_pool->pipe_count; i++) {
-		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
-
-		if (pipe_ctx->stream == stream &&
-				(pipe_ctx->prev_odm_pipe == NULL && pipe_ctx->next_odm_pipe == NULL))
-			return true;
-	}
-	return false;
-}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
index 40011cd3c8ef..10c83f4083b5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
@@ -98,7 +98,6 @@ static const struct hw_sequencer_funcs dcn31_funcs = {
 	.set_pipe = dcn21_set_pipe,
 	.z10_restore = dcn31_z10_restore,
 	.z10_save_init = dcn31_z10_save_init,
-	.is_abm_supported = dcn31_is_abm_supported,
 	.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,
 	.update_visual_confirm_color = dcn20_update_visual_confirm_color,
 };
-- 
2.25.1

[PATCH 08/33] drm/amd/display: Add flag to detect dpms force off during HPD

[Mikita Lipski]

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

[Why] When a connector is unplugged, dpms is forced off so that some
connector allocations are cleared off. This is done outside the commit
sequence from the userspace. This causes HUBP blank. Due to the blank
hubp, a non blocking commit which queues flip will encounter a timeout
waiting for the flip_done because prior to writing the surface flip
address, hubp was in blank.

[How] Add a marker to DM's crtc state and use this field to indicate
whether dpms was forced off during an HPD. Check for this marker before
queuing the flip.

Reviewed-by: Anson Jacob <Anson.Jacob@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 19 +++++++++++++------
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  2 ++
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c    | 18 ++++++++++++++----
 3 files changed, 29 insertions(+), 10 deletions(-)

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 c8ef72702e60..a6c8c30f8c2d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2409,7 +2409,7 @@ static void dm_gpureset_commit_state(struct dc_state *dc_state,
 	return;
 }
 
-static void dm_set_dpms_off(struct dc_link *link)
+static void dm_set_dpms_off(struct dc_link *link, struct dm_crtc_state *acrtc_state)
 {
 	struct dc_stream_state *stream_state;
 	struct amdgpu_dm_connector *aconnector = link->priv;
@@ -2430,6 +2430,7 @@ static void dm_set_dpms_off(struct dc_link *link)
 	}
 
 	stream_update.stream = stream_state;
+	acrtc_state->force_dpms_off = true;
 	dc_commit_updates_for_stream(stream_state->ctx->dc, NULL, 0,
 				     stream_state, &stream_update,
 				     stream_state->ctx->dc->current_state);
@@ -2873,13 +2874,16 @@ static void handle_hpd_irq_helper(struct amdgpu_dm_connector *aconnector)
 	struct drm_device *dev = connector->dev;
 	enum dc_connection_type new_connection_type = dc_connection_none;
 	struct amdgpu_device *adev = drm_to_adev(dev);
-#ifdef CONFIG_DRM_AMD_DC_HDCP
 	struct dm_connector_state *dm_con_state = to_dm_connector_state(connector->state);
-#endif
+	struct dm_crtc_state *dm_crtc_state = NULL;
 
 	if (adev->dm.disable_hpd_irq)
 		return;
 
+	if (dm_con_state->base.state && dm_con_state->base.crtc)
+		dm_crtc_state = to_dm_crtc_state(drm_atomic_get_crtc_state(
+					dm_con_state->base.state,
+					dm_con_state->base.crtc));
 	/*
 	 * In case of failure or MST no need to update connector status or notify the OS
 	 * since (for MST case) MST does this in its own context.
@@ -2911,8 +2915,9 @@ static void handle_hpd_irq_helper(struct amdgpu_dm_connector *aconnector)
 
 	} else if (dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD)) {
 		if (new_connection_type == dc_connection_none &&
-		    aconnector->dc_link->type == dc_connection_none)
-			dm_set_dpms_off(aconnector->dc_link);
+		    aconnector->dc_link->type == dc_connection_none &&
+		    dm_crtc_state)
+			dm_set_dpms_off(aconnector->dc_link, dm_crtc_state);
 
 		amdgpu_dm_update_connector_after_detect(aconnector);
 
@@ -6253,6 +6258,7 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc)
 	state->freesync_config = cur->freesync_config;
 	state->cm_has_degamma = cur->cm_has_degamma;
 	state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb;
+	state->force_dpms_off = cur->force_dpms_off;
 	/* TODO Duplicate dc_stream after objects are stream object is flattened */
 
 	return &state->base;
@@ -8914,7 +8920,8 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 		 * and rely on sending it from software.
 		 */
 		if (acrtc_attach->base.state->event &&
-		    acrtc_state->active_planes > 0) {
+		    acrtc_state->active_planes > 0 &&
+		    !acrtc_state->force_dpms_off) {
 			drm_crtc_vblank_get(pcrtc);
 
 			spin_lock_irqsave(&pcrtc->dev->event_lock, flags);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index a038c70037b5..a85b09986aab 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -629,6 +629,8 @@ struct dm_crtc_state {
 
 	bool dsc_force_changed;
 	bool vrr_supported;
+
+	bool force_dpms_off;
 	struct mod_freesync_config freesync_config;
 	struct dc_info_packet vrr_infopacket;
 
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 c5f1dc3b5961..c5f61be1f6b5 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
@@ -448,6 +448,10 @@ static void update_config(void *handle, struct cp_psp_stream_config *config)
 	struct mod_hdcp_display *display = &hdcp_work[link_index].display;
 	struct mod_hdcp_link *link = &hdcp_work[link_index].link;
 	struct drm_connector_state *conn_state;
+	struct dc_sink *sink = NULL;
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+	bool link_is_hdcp14 = false;
+#endif
 
 	if (config->dpms_off) {
 		hdcp_remove_display(hdcp_work, link_index, aconnector);
@@ -460,8 +464,13 @@ static void update_config(void *handle, struct cp_psp_stream_config *config)
 	display->index = aconnector->base.index;
 	display->state = MOD_HDCP_DISPLAY_ACTIVE;
 
-	if (aconnector->dc_sink != NULL)
-		link->mode = mod_hdcp_signal_type_to_operation_mode(aconnector->dc_sink->sink_signal);
+	if (aconnector->dc_sink)
+		sink = aconnector->dc_sink;
+	else if (aconnector->dc_em_sink)
+		sink = aconnector->dc_em_sink;
+
+	if (sink != NULL)
+		link->mode = mod_hdcp_signal_type_to_operation_mode(sink->sink_signal);
 
 	display->controller = CONTROLLER_ID_D0 + config->otg_inst;
 	display->dig_fe = config->dig_fe;
@@ -470,8 +479,9 @@ static void update_config(void *handle, struct cp_psp_stream_config *config)
 	display->stream_enc_idx = config->stream_enc_idx;
 	link->link_enc_idx = config->link_enc_idx;
 	link->phy_idx = config->phy_idx;
-	link->hdcp_supported_informational = dc_link_is_hdcp14(aconnector->dc_link,
-			aconnector->dc_sink->sink_signal) ? 1 : 0;
+	if (sink)
+		link_is_hdcp14 = dc_link_is_hdcp14(aconnector->dc_link, sink->sink_signal);
+	link->hdcp_supported_informational = link_is_hdcp14;
 	link->dp.rev = aconnector->dc_link->dpcd_caps.dpcd_rev.raw;
 	link->dp.assr_enabled = config->assr_enabled;
 	link->dp.mst_enabled = config->mst_enabled;
-- 
2.25.1

[PATCH 09/33] drm/amd/display: Fix dynamic link encoder access.

[Mikita Lipski]

From: Jimmy Kizito <Jimmy.Kizito@amd.com>

[Why]
Assuming DIG link encoders are statically mapped to links can cause
system instability due to null pointer accesses.

[How]
- Add checks for non-null link encoder pointers before trying to access
them.
- When a hardware platform uses dynamic DIG assignment (i.e. resource
function 'link_encs_assign' defined) and a link supports flexible
mapping to DIGs, use the link_enc_cfg API to access the DIG assigned to
a link or stream.

Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
---
 .../display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c  |  2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 42 +++++++++++++++----
 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 36 ++++++++++++++--
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c | 25 ++++++-----
 .../drm/amd/display/dc/core/dc_link_hwss.c    |  7 ++--
 .../gpu/drm/amd/display/dc/core/dc_resource.c |  3 +-
 .../display/dc/dce110/dce110_hw_sequencer.c   | 22 +++++++---
 .../drm/amd/display/dc/dcn10/dcn10_resource.c |  2 +-
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    | 13 ++++--
 .../drm/amd/display/dc/dcn20/dcn20_resource.c | 20 ++++++++-
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |  9 +++-
 .../gpu/drm/amd/display/dc/inc/link_enc_cfg.h |  5 +++
 12 files changed, 147 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
index 15491e3ca11a..1414da4b95d7 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
@@ -87,7 +87,7 @@ int dcn31_get_active_display_cnt_wa(
 		const struct dc_link *link = dc->links[i];
 
 		/* abusing the fact that the dig and phy are coupled to see if the phy is enabled */
-		if (link->link_enc->funcs->is_dig_enabled &&
+		if (link->link_enc && link->link_enc->funcs->is_dig_enabled &&
 				link->link_enc->funcs->is_dig_enabled(link->link_enc))
 			display_count++;
 	}
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 5d9460e0dbab..3c8eb3e659af 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3457,6 +3457,10 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx)
 static void update_psp_stream_config(struct pipe_ctx *pipe_ctx, bool dpms_off)
 {
 	struct cp_psp *cp_psp = &pipe_ctx->stream->ctx->cp_psp;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct link_encoder *link_enc = NULL;
+#endif
+
 	if (cp_psp && cp_psp->funcs.update_stream_config) {
 		struct cp_psp_stream_config config = {0};
 		enum dp_panel_mode panel_mode =
@@ -3468,8 +3472,21 @@ static void update_psp_stream_config(struct pipe_ctx *pipe_ctx, bool dpms_off)
 		config.dig_be = pipe_ctx->stream->link->link_enc_hw_inst;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 		config.stream_enc_idx = pipe_ctx->stream_res.stream_enc->id - ENGINE_ID_DIGA;
-		config.link_enc_idx = pipe_ctx->stream->link->link_enc->transmitter - TRANSMITTER_UNIPHY_A;
-		config.phy_idx = pipe_ctx->stream->link->link_enc->transmitter - TRANSMITTER_UNIPHY_A;
+		if (pipe_ctx->stream->link->ep_type == DISPLAY_ENDPOINT_PHY) {
+			link_enc = pipe_ctx->stream->link->link_enc;
+			config.phy_idx = link_enc->transmitter - TRANSMITTER_UNIPHY_A;
+		} else if (pipe_ctx->stream->link->dc->res_pool->funcs->link_encs_assign) {
+			/* Use link encoder assignment from current DC state - which may differ from the DC state to be
+			 * committed - when updating PSP config.
+			 */
+			link_enc = link_enc_cfg_get_link_enc_used_by_stream(
+					pipe_ctx->stream->link->dc->current_state,
+					pipe_ctx->stream);
+			config.phy_idx = 0; /* Clear phy_idx for non-physical display endpoints. */
+		}
+		ASSERT(link_enc);
+		if (link_enc)
+			config.link_enc_idx = link_enc->transmitter - TRANSMITTER_UNIPHY_A;
 		if (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;
 			config.link_enc_idx = pipe_ctx->stream->link->hpo_dp_link_enc->inst;
@@ -3576,6 +3593,7 @@ void core_link_enable_stream(
 	struct dc_stream_state *stream = pipe_ctx->stream;
 	struct dc_link *link = stream->sink->link;
 	enum dc_status status;
+	struct link_encoder *link_enc;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	enum otg_out_mux_dest otg_out_dest = OUT_MUX_DIO;
 #endif
@@ -3585,15 +3603,22 @@ void core_link_enable_stream(
 			dc_is_virtual_signal(pipe_ctx->stream->signal))
 		return;
 
+	if (dc->res_pool->funcs->link_encs_assign && stream->link->ep_type != DISPLAY_ENDPOINT_PHY)
+		link_enc = stream->link_enc;
+	else
+		link_enc = stream->link->link_enc;
+	ASSERT(link_enc);
+
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	if (!dc_is_virtual_signal(pipe_ctx->stream->signal)
 			&& !is_dp_128b_132b_signal(pipe_ctx)) {
 #else
 	if (!dc_is_virtual_signal(pipe_ctx->stream->signal)) {
 #endif
-		stream->link->link_enc->funcs->setup(
-			stream->link->link_enc,
-			pipe_ctx->stream->signal);
+		if (link_enc)
+			link_enc->funcs->setup(
+				link_enc,
+				pipe_ctx->stream->signal);
 		pipe_ctx->stream_res.stream_enc->funcs->setup_stereo_sync(
 			pipe_ctx->stream_res.stream_enc,
 			pipe_ctx->stream_res.tg->inst,
@@ -3748,9 +3773,10 @@ void core_link_enable_stream(
 #else
 		if (!dc_is_virtual_signal(pipe_ctx->stream->signal))
 #endif
-			stream->link->link_enc->funcs->setup(
-				stream->link->link_enc,
-				pipe_ctx->stream->signal);
+			if (link_enc)
+				link_enc->funcs->setup(
+					link_enc,
+					pipe_ctx->stream->signal);
 
 		dc->hwss.enable_stream(pipe_ctx);
 
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 4d1ac9836dca..6fc0e12a715a 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
@@ -2625,13 +2625,27 @@ static enum dc_link_rate get_lttpr_max_link_rate(struct dc_link *link)
 
 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;
 	}
 
-	if (link->link_enc->funcs->get_max_link_cap) {
-		link->link_enc->funcs->get_max_link_cap(link->link_enc, max_link_enc_cap);
+	/* Links supporting dynamically assigned link encoder will be assigned next
+	 * available encoder if one not already assigned.
+	 */
+	if (link->is_dig_mapping_flexible &&
+			link->dc->res_pool->funcs->link_encs_assign) {
+		link_enc = link_enc_cfg_get_link_enc_used_by_link(link->dc->current_state, link);
+		if (link_enc == NULL)
+			link_enc = link_enc_cfg_get_next_avail_link_enc(link->dc, link->dc->current_state);
+	} else
+		link_enc = link->link_enc;
+	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;
 	}
 
@@ -2647,9 +2661,23 @@ static struct dc_link_settings get_max_link_cap(struct dc_link *link)
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	enum dc_link_rate lttpr_max_link_rate;
 #endif
+	struct link_encoder *link_enc = NULL;
+
+	/* Links supporting dynamically assigned link encoder will be assigned next
+	 * available encoder if one not already assigned.
+	 */
+	if (link->is_dig_mapping_flexible &&
+			link->dc->res_pool->funcs->link_encs_assign) {
+		link_enc = link_enc_cfg_get_link_enc_used_by_link(link->dc->current_state, link);
+		if (link_enc == NULL)
+			link_enc = link_enc_cfg_get_next_avail_link_enc(link->dc, link->dc->current_state);
+	} else
+		link_enc = link->link_enc;
+	ASSERT(link_enc);
 
 	/* get max link encoder capability */
-	link->link_enc->funcs->get_max_link_cap(link->link_enc, &max_link_cap);
+	if (link_enc)
+		link_enc->funcs->get_max_link_cap(link_enc, &max_link_cap);
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	if (max_link_cap.link_rate >= LINK_RATE_UHBR10 &&
 			!link->hpo_dp_link_enc)
@@ -2868,7 +2896,7 @@ bool dp_verify_link_cap(
 	 * 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.
 	 */
-	if (link->link_enc->features.flags.bits.DP_IS_USB_C &&
+	if (link->link_enc && link->link_enc->features.flags.bits.DP_IS_USB_C &&
 			link->dc->debug.usbc_combo_phy_reset_wa) {
 		dp_enable_link_phy(link, link->connector_signal, dp_cs_id, cur);
 		dp_disable_link_phy(link, link->connector_signal);
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 de80a9ea4cfa..49b17bbea8d1 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
@@ -139,7 +139,7 @@ static struct dc_stream_state *get_stream_using_link_enc(
 	for (i = 0; i < state->stream_count; i++) {
 		struct link_enc_assignment assignment = state->res_ctx.link_enc_assignments[i];
 
-		if (assignment.valid && (assignment.eng_id == eng_id)) {
+		if ((assignment.valid == true) && (assignment.eng_id == eng_id)) {
 			stream_idx = i;
 			break;
 		}
@@ -254,7 +254,7 @@ struct dc_link *link_enc_cfg_get_link_using_link_enc(
 	for (i = 0; i < state->stream_count; i++) {
 		struct link_enc_assignment assignment = state->res_ctx.link_enc_assignments[i];
 
-		if (assignment.valid && (assignment.eng_id == eng_id)) {
+		if ((assignment.valid == true) && (assignment.eng_id == eng_id)) {
 			stream_idx = i;
 			break;
 		}
@@ -274,7 +274,6 @@ struct link_encoder *link_enc_cfg_get_link_enc_used_by_link(
 {
 	struct link_encoder *link_enc = NULL;
 	struct display_endpoint_id ep_id;
-	int stream_idx = -1;
 	int i;
 
 	ep_id = (struct display_endpoint_id) {
@@ -283,20 +282,15 @@ struct link_encoder *link_enc_cfg_get_link_enc_used_by_link(
 
 	for (i = 0; i < state->stream_count; i++) {
 		struct link_enc_assignment assignment = state->res_ctx.link_enc_assignments[i];
-
-		if (assignment.valid &&
+		if (assignment.valid == true &&
 				assignment.ep_id.link_id.id == ep_id.link_id.id &&
 				assignment.ep_id.link_id.enum_id == ep_id.link_id.enum_id &&
 				assignment.ep_id.link_id.type == ep_id.link_id.type &&
 				assignment.ep_id.ep_type == ep_id.ep_type) {
-			stream_idx = i;
-			break;
+			link_enc = link->dc->res_pool->link_encoders[assignment.eng_id - ENGINE_ID_DIGA];
 		}
 	}
 
-	if (stream_idx != -1)
-		link_enc = state->streams[stream_idx]->link_enc;
-
 	return link_enc;
 }
 
@@ -313,3 +307,14 @@ struct link_encoder *link_enc_cfg_get_next_avail_link_enc(
 
 	return link_enc;
 }
+
+struct link_encoder *link_enc_cfg_get_link_enc_used_by_stream(
+		struct dc_state *state,
+		const struct dc_stream_state *stream)
+{
+	struct link_encoder *link_enc;
+
+	link_enc = link_enc_cfg_get_link_enc_used_by_link(state, stream->link);
+
+	return link_enc;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index b9570b7c557b..dae0ab761b61 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -452,9 +452,10 @@ void dp_retrain_link_dp_test(struct dc_link *link,
 			if ((&pipes[i])->stream_res.audio && !link->dc->debug.az_endpoint_mute_only)
 				(&pipes[i])->stream_res.audio->funcs->az_disable((&pipes[i])->stream_res.audio);
 
-			link->link_enc->funcs->disable_output(
-					link->link_enc,
-					SIGNAL_TYPE_DISPLAY_PORT);
+			if (link->link_enc)
+				link->link_enc->funcs->disable_output(
+						link->link_enc,
+						SIGNAL_TYPE_DISPLAY_PORT);
 
 			/* Clear current link setting. */
 			memset(&link->cur_link_settings, 0,
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 57420bf10786..8766b124d4b0 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -2970,7 +2970,8 @@ enum dc_status dc_validate_stream(struct dc *dc, struct dc_stream_state *stream)
 		res = DC_FAIL_CONTROLLER_VALIDATE;
 
 	if (res == DC_OK) {
-		if (!link->link_enc->funcs->validate_output_with_stream(
+		if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
+				!link->link_enc->funcs->validate_output_with_stream(
 						link->link_enc, stream))
 			res = DC_FAIL_ENC_VALIDATE;
 	}
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 2ce668a23fe8..102f76462752 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 "transform.h"
 #include "stream_encoder.h"
 #include "link_encoder.h"
+#include "link_enc_cfg.h"
 #include "link_hwss.h"
 #include "dc_link_dp.h"
 #if defined(CONFIG_DRM_AMD_DC_DCN)
@@ -1192,6 +1193,7 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 	struct dc_stream_state *stream = pipe_ctx->stream;
 	struct dc_link *link = stream->link;
 	struct dc *dc = pipe_ctx->stream->ctx->dc;
+	struct link_encoder *link_enc = NULL;
 
 	if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal)) {
 		pipe_ctx->stream_res.stream_enc->funcs->stop_hdmi_info_packets(
@@ -1213,6 +1215,13 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 
 	dc->hwss.disable_audio_stream(pipe_ctx);
 
+	/* Link encoder may have been dynamically assigned to non-physical display endpoint. */
+	if (link->ep_type == DISPLAY_ENDPOINT_PHY)
+		link_enc = link->link_enc;
+	else if (dc->res_pool->funcs->link_encs_assign)
+		link_enc = link_enc_cfg_get_link_enc_used_by_link(link->dc->current_state, link);
+	ASSERT(link_enc);
+
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	if (is_dp_128b_132b_signal(pipe_ctx)) {
 		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->disable(
@@ -1220,13 +1229,15 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 		setup_dp_hpo_stream(pipe_ctx, false);
 	/* TODO - DP2.0 HW: unmap stream from link encoder here */
 	} else {
-		link->link_enc->funcs->connect_dig_be_to_fe(
-				link->link_enc,
+		if (link_enc)
+			link_enc->funcs->connect_dig_be_to_fe(
+				link_enc,
 				pipe_ctx->stream_res.stream_enc->id,
 				false);
 	}
 #else
-	link->link_enc->funcs->connect_dig_be_to_fe(
+	if (link_enc)
+		link_enc->funcs->connect_dig_be_to_fe(
 			link->link_enc,
 			pipe_ctx->stream_res.stream_enc->id,
 			false);
@@ -1666,8 +1677,9 @@ static void power_down_encoders(struct dc *dc)
 		if (signal != SIGNAL_TYPE_EDP)
 			signal = SIGNAL_TYPE_NONE;
 
-		dc->links[i]->link_enc->funcs->disable_output(
-				dc->links[i]->link_enc, signal);
+		if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY)
+			dc->links[i]->link_enc->funcs->disable_output(
+					dc->links[i]->link_enc, signal);
 
 		dc->links[i]->link_status.link_active = false;
 		memset(&dc->links[i]->cur_link_settings, 0,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
index 7daadb6a5233..f37551e00023 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
@@ -1296,7 +1296,7 @@ struct stream_encoder *dcn10_find_first_free_match_stream_enc_for_link(
 			 * in daisy chain use case
 			 */
 			j = i;
-			if (pool->stream_enc[i]->id ==
+			if (link->ep_type == DISPLAY_ENDPOINT_PHY && pool->stream_enc[i]->id ==
 					link->link_enc->preferred_engine)
 				return pool->stream_enc[i];
 		}
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 ffc0b9ab976f..c0aed7d07eeb 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -2381,6 +2381,13 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 	uint32_t active_total_with_borders;
 	uint32_t early_control = 0;
 	struct timing_generator *tg = pipe_ctx->stream_res.tg;
+	struct link_encoder *link_enc;
+
+	if (link->is_dig_mapping_flexible &&
+			link->dc->res_pool->funcs->link_encs_assign)
+		link_enc = pipe_ctx->stream->link_enc;
+	else
+		link_enc = link->link_enc;
 
 	/* For MST, there are multiply stream go to only one link.
 	 * connect DIG back_end to front_end while enable_stream and
@@ -2397,9 +2404,9 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 				link->hpo_dp_link_enc->inst);
 	}
 
-	if (!is_dp_128b_132b_signal(pipe_ctx))
-		link->link_enc->funcs->connect_dig_be_to_fe(
-			link->link_enc, pipe_ctx->stream_res.stream_enc->id, true);
+	if (!is_dp_128b_132b_signal(pipe_ctx) && link_enc)
+		link_enc->funcs->connect_dig_be_to_fe(
+			link_enc, pipe_ctx->stream_res.stream_enc->id, true);
 
 	if (dc_is_dp_signal(pipe_ctx->stream->signal))
 		dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_BE);
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 7bab88356df4..e69f553d680f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -87,6 +87,7 @@
 #include "dce/dce_aux.h"
 #include "dce/dce_i2c.h"
 #include "vm_helper.h"
+#include "link_enc_cfg.h"
 
 #include "amdgpu_socbb.h"
 
@@ -1596,12 +1597,29 @@ static void get_pixel_clock_parameters(
 	const struct dc_stream_state *stream = pipe_ctx->stream;
 	struct pipe_ctx *odm_pipe;
 	int opp_cnt = 1;
+	struct dc_link *link = stream->link;
+	struct link_encoder *link_enc = NULL;
 
 	for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe)
 		opp_cnt++;
 
 	pixel_clk_params->requested_pix_clk_100hz = stream->timing.pix_clk_100hz;
-	pixel_clk_params->encoder_object_id = stream->link->link_enc->id;
+
+	/* Links supporting dynamically assigned link encoder will be assigned next
+	 * available encoder if one not already assigned.
+	 */
+	if (link->is_dig_mapping_flexible &&
+			link->dc->res_pool->funcs->link_encs_assign) {
+		link_enc = link_enc_cfg_get_link_enc_used_by_stream(stream->link->dc->current_state, stream);
+		if (link_enc == NULL)
+			link_enc = link_enc_cfg_get_next_avail_link_enc(stream->link->dc,
+				stream->link->dc->current_state);
+	} else
+		link_enc = stream->link->link_enc;
+	ASSERT(link_enc);
+
+	if (link_enc)
+		pixel_clk_params->encoder_object_id = link_enc->id;
 	pixel_clk_params->signal_type = pipe_ctx->stream->signal;
 	pixel_clk_params->controller_id = pipe_ctx->stream_res.tg->inst + 1;
 	/* TODO: un-hardcode*/
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 2434232fb3f5..83f223d745fa 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -157,6 +157,9 @@ void dcn31_init_hw(struct dc *dc)
 		 */
 		struct dc_link *link = dc->links[i];
 
+		if (link->ep_type != DISPLAY_ENDPOINT_PHY)
+			continue;
+
 		link->link_enc->funcs->hw_init(link->link_enc);
 
 		/* Check for enabled DIG to identify enabled display */
@@ -184,7 +187,8 @@ void dcn31_init_hw(struct dc *dc)
 						     &dpcd_power_state, sizeof(dpcd_power_state));
 			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
 				/* blank dp stream before power off receiver*/
-				if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
+				if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY &&
+						dc->links[i]->link_enc->funcs->get_dig_frontend) {
 					unsigned int fe;
 
 					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
@@ -248,7 +252,8 @@ void dcn31_init_hw(struct dc *dc)
 			for (i = 0; i < dc->link_count; i++) {
 				struct dc_link *link = dc->links[i];
 
-				if (link->link_enc->funcs->is_dig_enabled &&
+				if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
+						link->link_enc->funcs->is_dig_enabled &&
 						link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
 						dc->hwss.power_down) {
 					dc->hwss.power_down(dc);
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h b/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h
index 883dd8733ea4..2472c9aed095 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h
@@ -88,4 +88,9 @@ struct link_encoder *link_enc_cfg_get_next_avail_link_enc(
 	const struct dc *dc,
 	const struct dc_state *state);
 
+/* Return DIG link encoder used by stream. NULL if unused. */
+struct link_encoder *link_enc_cfg_get_link_enc_used_by_stream(
+		struct dc_state *state,
+		const struct dc_stream_state *stream);
+
 #endif /* DC_INC_LINK_ENC_CFG_H_ */
-- 
2.25.1

[PATCH 10/33] drm/amd/display: Fix false BAD_FREE warning from Coverity

[Mikita Lipski]

From: Anson Jacob <Anson.Jacob@amd.com>

This is an attempt to fix false warning raised by Coverity
via multiple CID's.

Addresses-Coverity-ID: 1487412 ("Free of address-of expression")
Cc: Wesley Chalmers <Wesley.Chalmers@amd.com>

Reviewed-by: Wesley Chalmers <wesley.chalmers@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c
index 72970e49800a..7f25c11f4248 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dpcd.c
@@ -176,12 +176,15 @@ static void dpcd_reduce_address_range(
 		uint8_t * const reduced_data,
 		const uint32_t reduced_size)
 {
-	const uint32_t reduced_end_address = END_ADDRESS(reduced_address, reduced_size);
-	const uint32_t extended_end_address = END_ADDRESS(extended_address, extended_size);
 	const uint32_t offset = reduced_address - extended_address;
 
-	if (extended_end_address == reduced_end_address && extended_address == reduced_address)
-		return; /* extended and reduced address ranges point to the same data */
+	/*
+	 * If the address is same, address was not extended.
+	 * So we do not need to free any memory.
+	 * The data is in original buffer(reduced_data).
+	 */
+	if (extended_data == reduced_data)
+		return;
 
 	memcpy(&extended_data[offset], reduced_data, reduced_size);
 	kfree(extended_data);
-- 
2.25.1

[PATCH 11/33] drm/amd/display: Fix for null pointer access for ddc pin and aux engine.

[Mikita Lipski]

From: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>

[Why]
Need a check for NULL pointer access for ddc pin and aux engine.

[How]
Adding a check for ddc pin and aux engine accesses.

Reviewed-by: Jimmy Kizito <jimmy.kizito@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c   |  2 --
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c         | 12 +++++++++---
 drivers/gpu/drm/amd/display/include/dal_asic_id.h    |  2 +-
 3 files changed, 10 insertions(+), 6 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 c5f61be1f6b5..5bfdc66b5867 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
@@ -449,9 +449,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config)
 	struct mod_hdcp_link *link = &hdcp_work[link_index].link;
 	struct drm_connector_state *conn_state;
 	struct dc_sink *sink = NULL;
-#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
 	bool link_is_hdcp14 = false;
-#endif
 
 	if (config->dpms_off) {
 		hdcp_remove_display(hdcp_work, link_index, aconnector);
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
index e14f99b4b0c3..4a3b94fa3e40 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -689,8 +689,8 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
 	enum aux_return_code_type operation_result;
 	bool retry_on_defer = false;
 	struct ddc *ddc_pin = ddc->ddc_pin;
-	struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en];
-	struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(aux_engine);
+	struct dce_aux *aux_engine = NULL;
+	struct aux_engine_dce110 *aux110 = NULL;
 	uint32_t defer_time_in_ms = 0;
 
 	int aux_ack_retries = 0,
@@ -699,6 +699,11 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
 		aux_timeout_retries = 0,
 		aux_invalid_reply_retries = 0;
 
+	if (ddc_pin) {
+		aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en];
+		aux110 = FROM_AUX_ENGINE(aux_engine);
+	}
+
 	if (!payload->reply) {
 		payload_reply = false;
 		payload->reply = &reply;
@@ -765,7 +770,8 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
 							"dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_DEFER");
 
 				/* polling_timeout_period is in us */
-				defer_time_in_ms += aux110->polling_timeout_period / 1000;
+				if (aux110)
+					defer_time_in_ms += aux110->polling_timeout_period / 1000;
 				++aux_defer_retries;
 				fallthrough;
 			case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
diff --git a/drivers/gpu/drm/amd/display/include/dal_asic_id.h b/drivers/gpu/drm/amd/display/include/dal_asic_id.h
index 381c17caace1..3d2f0817e40a 100644
--- a/drivers/gpu/drm/amd/display/include/dal_asic_id.h
+++ b/drivers/gpu/drm/amd/display/include/dal_asic_id.h
@@ -227,7 +227,7 @@ enum {
 #define FAMILY_YELLOW_CARP                     146
 
 #define YELLOW_CARP_A0 0x01
-#define YELLOW_CARP_B0 0x02		// TODO: DCN31 - update with correct B0 ID
+#define YELLOW_CARP_B0 0x20
 #define YELLOW_CARP_UNKNOWN 0xFF
 
 #ifndef ASICREV_IS_YELLOW_CARP
-- 
2.25.1

[PATCH 12/33] drm/amd/display: [FW Promotion] Release 0.0.81

[Mikita Lipski]

From: Anthony Koo <Anthony.Koo@amd.com>

* PSR optimizations
* add support for ABM when ODM is enabled
* Z10 with PSR fixes
* Increase trace buffer

Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
---
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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 3388188701d3..8cf86f7cda41 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -47,10 +47,10 @@
 
 /* Firmware versioning. */
 #ifdef DMUB_EXPOSE_VERSION
-#define DMUB_FW_VERSION_GIT_HASH 0x591aacca1
+#define DMUB_FW_VERSION_GIT_HASH 0x8ebc06e16
 #define DMUB_FW_VERSION_MAJOR 0
 #define DMUB_FW_VERSION_MINOR 0
-#define DMUB_FW_VERSION_REVISION 80
+#define DMUB_FW_VERSION_REVISION 81
 #define DMUB_FW_VERSION_TEST 0
 #define DMUB_FW_VERSION_VBIOS 0
 #define DMUB_FW_VERSION_HOTFIX 0
-- 
2.25.1

[PATCH 13/33] drm/amd/display: Revert "dc: w/a for hard hang on HPD on native DP"

[Mikita Lipski]

From: Qingqing Zhuo <qingqing.zhuo@amd.com>

This reverts commit "drm/amd/display: w/a for hard hang on HPD on native DP".

[How & Why]
Revert change as it does not fix the hard hang
in all cases. An alternative w/a will be submitted
separately.

Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
---
 drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
index 6185f9475fa2..c6f494f0dcea 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
@@ -66,11 +66,9 @@ int rn_get_active_display_cnt_wa(
 	for (i = 0; i < context->stream_count; i++) {
 		const struct dc_stream_state *stream = context->streams[i];
 
-		/* Extend the WA to DP for Linux*/
 		if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
 				stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
-				stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK ||
-				stream->signal == SIGNAL_TYPE_DISPLAY_PORT)
+				stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
 			tmds_present = true;
 	}
 
-- 
2.25.1

[PATCH 14/33] drm/amd/display: 3.2.151

[Mikita Lipski]

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

* coverity kernel memory leak fixes
* NULL pointer dereference fixes
* Add periodic detection when zstate is enabled
* Fork thread to offload work of hpd_rx_irq

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@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 bcae2250a574..ece44796a74f 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -45,7 +45,7 @@
 /* forward declaration */
 struct aux_payload;
 
-#define DC_VER "3.2.150"
+#define DC_VER "3.2.151"
 
 #define MAX_SURFACES 3
 #define MAX_PLANES 6
-- 
2.25.1

[PATCH 15/33] drm/amd/display: Fix multiple memory leaks reported by coverity

[Mikita Lipski]

From: Anson Jacob <Anson.Jacob@amd.com>

coccinelle patch used:

@@ expression enc1,vpg,afmt; @@
-       if (!enc1 || !vpg || !afmt)
+       if (!enc1 || !vpg || !afmt) {
+               kfree(enc1);
+               kfree(vpg);
+               kfree(afmt);
                return NULL;
+       }

Addresses-Coverity-ID: 1466017: ("Resource leaks")

Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
---
 .../gpu/drm/amd/display/dc/dcn30/dcn30_resource.c    |  6 +++++-
 .../gpu/drm/amd/display/dc/dcn301/dcn301_resource.c  |  6 +++++-
 .../gpu/drm/amd/display/dc/dcn302/dcn302_resource.c  |  6 +++++-
 .../gpu/drm/amd/display/dc/dcn31/dcn31_resource.c    | 12 ++++++++++--
 4 files changed, 25 insertions(+), 5 deletions(-)

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 2feffe75ca62..3a8a3214f770 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
@@ -1164,8 +1164,12 @@ struct stream_encoder *dcn30_stream_encoder_create(
 	vpg = dcn30_vpg_create(ctx, vpg_inst);
 	afmt = dcn30_afmt_create(ctx, afmt_inst);
 
-	if (!enc1 || !vpg || !afmt)
+	if (!enc1 || !vpg || !afmt) {
+		kfree(enc1);
+		kfree(vpg);
+		kfree(afmt);
 		return NULL;
+	}
 
 	dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios,
 					eng_id, vpg, afmt,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c
index 912285fdce18..73b8fcb3c5c9 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c
@@ -1195,8 +1195,12 @@ struct stream_encoder *dcn301_stream_encoder_create(
 	vpg = dcn301_vpg_create(ctx, vpg_inst);
 	afmt = dcn301_afmt_create(ctx, afmt_inst);
 
-	if (!enc1 || !vpg || !afmt)
+	if (!enc1 || !vpg || !afmt) {
+		kfree(enc1);
+		kfree(vpg);
+		kfree(afmt);
 		return NULL;
+	}
 
 	dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios,
 					eng_id, vpg, afmt,
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 5cd55e8573f7..fcf96cf08c76 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
@@ -542,8 +542,12 @@ static struct stream_encoder *dcn302_stream_encoder_create(enum engine_id eng_id
 	vpg = dcn302_vpg_create(ctx, vpg_inst);
 	afmt = dcn302_afmt_create(ctx, afmt_inst);
 
-	if (!enc1 || !vpg || !afmt)
+	if (!enc1 || !vpg || !afmt) {
+		kfree(enc1);
+		kfree(vpg);
+		kfree(afmt);
 		return NULL;
+	}
 
 	dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios, eng_id, vpg, afmt, &stream_enc_regs[eng_id],
 			&se_shift, &se_mask);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index 91cbc0922ad4..e0b93665bf55 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -1366,8 +1366,12 @@ static struct stream_encoder *dcn31_stream_encoder_create(
 	vpg = dcn31_vpg_create(ctx, vpg_inst);
 	afmt = dcn31_afmt_create(ctx, afmt_inst);
 
-	if (!enc1 || !vpg || !afmt)
+	if (!enc1 || !vpg || !afmt) {
+		kfree(enc1);
+		kfree(vpg);
+		kfree(afmt);
 		return NULL;
+	}
 
 	dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios,
 					eng_id, vpg, afmt,
@@ -1412,8 +1416,12 @@ static struct hpo_dp_stream_encoder *dcn31_hpo_dp_stream_encoder_create(
 	vpg = dcn31_vpg_create(ctx, vpg_inst);
 	apg = dcn31_apg_create(ctx, apg_inst);
 
-	if (!hpo_dp_enc31 || !vpg || !apg)
+	if (!hpo_dp_enc31 || !vpg || !apg) {
+		kfree(hpo_dp_enc31);
+		kfree(vpg);
+		kfree(apg);
 		return NULL;
+	}
 
 	dcn31_hpo_dp_stream_encoder_construct(hpo_dp_enc31, ctx, ctx->dc_bios,
 					hpo_dp_inst, eng_id, vpg, apg,
-- 
2.25.1

[PATCH 16/33] drm/amd/display: Get backlight from PWM if DMCU is not initialized

[Mikita Lipski]

From: Harry Wentland <harry.wentland@amd.com>

On Carrizo/Stoney systems we set backlight through panel_cntl, i.e.
directly via the PWM registers, if DMCU is not initialized. We
always read it back through ABM registers which leads to a
mismatch and forces atomic_commit to program the backlight
each time.

Instead make sure we use the same logic for backlight readback,
i.e. read it from panel_cntl if DMCU is not initialized.

We also need to remove some extraneous and incorrect calculations
at the end of dce_get_16_bit_backlight_from_pwm.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1666
Cc: stable@vger.kernel.org

Reviewed-by: Josip Pavic <josip.pavic@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c    | 16 ++++++++++++----
 .../gpu/drm/amd/display/dc/dce/dce_panel_cntl.c  | 10 ----------
 2 files changed, 12 insertions(+), 14 deletions(-)

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 3c8eb3e659af..61e49671fed5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2752,13 +2752,21 @@ static struct abm *get_abm_from_stream_res(const struct dc_link *link)
 
 int dc_link_get_backlight_level(const struct dc_link *link)
 {
-
 	struct abm *abm = get_abm_from_stream_res(link);
+	struct panel_cntl *panel_cntl = link->panel_cntl;
+	struct dc  *dc = link->ctx->dc;
+	struct dmcu *dmcu = dc->res_pool->dmcu;
+	bool fw_set_brightness = true;
 
-	if (abm == NULL || abm->funcs->get_current_backlight == NULL)
-		return DC_ERROR_UNEXPECTED;
+	if (dmcu)
+		fw_set_brightness = dmcu->funcs->is_dmcu_initialized(dmcu);
 
-	return (int) abm->funcs->get_current_backlight(abm);
+	if (!fw_set_brightness && panel_cntl->funcs->get_current_backlight)
+		return panel_cntl->funcs->get_current_backlight(panel_cntl);
+	else if (abm != NULL && abm->funcs->get_current_backlight != NULL)
+		return (int) abm->funcs->get_current_backlight(abm);
+	else
+		return DC_ERROR_UNEXPECTED;
 }
 
 int dc_link_get_target_backlight_pwm(const struct dc_link *link)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c
index e92339235863..e8570060d007 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c
@@ -49,7 +49,6 @@
 static unsigned int dce_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_cntl)
 {
 	uint64_t current_backlight;
-	uint32_t round_result;
 	uint32_t bl_period, bl_int_count;
 	uint32_t bl_pwm, fractional_duty_cycle_en;
 	uint32_t bl_period_mask, bl_pwm_mask;
@@ -84,15 +83,6 @@ static unsigned int dce_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_c
 	current_backlight = div_u64(current_backlight, bl_period);
 	current_backlight = (current_backlight + 1) >> 1;
 
-	current_backlight = (uint64_t)(current_backlight) * bl_period;
-
-	round_result = (uint32_t)(current_backlight & 0xFFFFFFFF);
-
-	round_result = (round_result >> (bl_int_count-1)) & 1;
-
-	current_backlight >>= bl_int_count;
-	current_backlight += round_result;
-
 	return (uint32_t)(current_backlight);
 }
 
-- 
2.25.1

[PATCH 16/33] drm/amd/display: Get backlight from PWM if DMCU is not initialized

[Mikita Lipski]

From: Harry Wentland <harry.wentland@amd.com>

On Carrizo/Stoney systems we set backlight through panel_cntl, i.e.
directly via the PWM registers, if DMCU is not initialized. We
always read it back through ABM registers which leads to a
mismatch and forces atomic_commit to program the backlight
each time.

Instead make sure we use the same logic for backlight readback,
i.e. read it from panel_cntl if DMCU is not initialized.

We also need to remove some extraneous and incorrect calculations
at the end of dce_get_16_bit_backlight_from_pwm.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1666
Cc: stable@vger.kernel.org

Reviewed-by: Josip Pavic <josip.pavic@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c    | 16 ++++++++++++----
 .../gpu/drm/amd/display/dc/dce/dce_panel_cntl.c  | 10 ----------
 2 files changed, 12 insertions(+), 14 deletions(-)

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 3c8eb3e659af..61e49671fed5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2752,13 +2752,21 @@ static struct abm *get_abm_from_stream_res(const struct dc_link *link)
 
 int dc_link_get_backlight_level(const struct dc_link *link)
 {
-
 	struct abm *abm = get_abm_from_stream_res(link);
+	struct panel_cntl *panel_cntl = link->panel_cntl;
+	struct dc  *dc = link->ctx->dc;
+	struct dmcu *dmcu = dc->res_pool->dmcu;
+	bool fw_set_brightness = true;
 
-	if (abm == NULL || abm->funcs->get_current_backlight == NULL)
-		return DC_ERROR_UNEXPECTED;
+	if (dmcu)
+		fw_set_brightness = dmcu->funcs->is_dmcu_initialized(dmcu);
 
-	return (int) abm->funcs->get_current_backlight(abm);
+	if (!fw_set_brightness && panel_cntl->funcs->get_current_backlight)
+		return panel_cntl->funcs->get_current_backlight(panel_cntl);
+	else if (abm != NULL && abm->funcs->get_current_backlight != NULL)
+		return (int) abm->funcs->get_current_backlight(abm);
+	else
+		return DC_ERROR_UNEXPECTED;
 }
 
 int dc_link_get_target_backlight_pwm(const struct dc_link *link)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c
index e92339235863..e8570060d007 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c
@@ -49,7 +49,6 @@
 static unsigned int dce_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_cntl)
 {
 	uint64_t current_backlight;
-	uint32_t round_result;
 	uint32_t bl_period, bl_int_count;
 	uint32_t bl_pwm, fractional_duty_cycle_en;
 	uint32_t bl_period_mask, bl_pwm_mask;
@@ -84,15 +83,6 @@ static unsigned int dce_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_c
 	current_backlight = div_u64(current_backlight, bl_period);
 	current_backlight = (current_backlight + 1) >> 1;
 
-	current_backlight = (uint64_t)(current_backlight) * bl_period;
-
-	round_result = (uint32_t)(current_backlight & 0xFFFFFFFF);
-
-	round_result = (round_result >> (bl_int_count-1)) & 1;
-
-	current_backlight >>= bl_int_count;
-	current_backlight += round_result;
-
 	return (uint32_t)(current_backlight);
 }
 
-- 
2.25.1

[PATCH 17/33] drm/amd/display: Revert "Directly retrain link from debugfs"

[Mikita Lipski]

From: Anson Jacob <Anson.Jacob@amd.com>

This reverts commit  f5b6a20c7ef40599095c796b0500d842ffdbc639.

This patch broke new settings from taking effect. Hotplug is
required for new settings to take effect.

Reviewed-by: Mikita Lipski <mikita.lipski@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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 87daa78a32b8..f3ada9b6be5a 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
@@ -247,6 +247,7 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
 {
 	struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
 	struct dc_link *link = connector->dc_link;
+	struct dc *dc = (struct dc *)link->dc;
 	struct dc_link_settings prefer_link_settings;
 	char *wr_buf = NULL;
 	const uint32_t wr_buf_size = 40;
@@ -313,7 +314,7 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
 	prefer_link_settings.lane_count = param[0];
 	prefer_link_settings.link_rate = param[1];
 
-	dp_retrain_link_dp_test(link, &prefer_link_settings, false);
+	dc_link_set_preferred_training_settings(dc, &prefer_link_settings, NULL, link, true);
 
 	kfree(wr_buf);
 	return size;
-- 
2.25.1

[PATCH 18/33] drm/amd/display: Add regamma/degamma coefficients and set sRGB when TF is BT709

[Mikita Lipski]

From: Jaehyun Chung <jaehyun.chung@amd.com>

[Why]
In YUV case, need to set the input TF to sRGB instead of BT709,
even though the input TF type is distributed. SRGB was not
being used because pixel format was not being set in the
surface update sequence.
Also, we were using the same coefficients for degamma and
regamma formula, causing the cutoff point of the linear
section of the curve to be incorrect.

[How]
Set pixel format in the surface update sequence. Add separate
coefficient arrays for regamma and degamma.

Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Jaehyun Chung <jaehyun.chung@amd.com>
---
 .../amd/display/modules/color/color_gamma.c   | 60 ++++++++++++-------
 1 file changed, 40 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index ef742d95ef05..275f11f8bea3 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -54,12 +54,18 @@ static struct hw_x_point coordinates_x[MAX_HW_POINTS + 2];
  * just multiply with 2^gamma which can be computed once, and save the result so we
  * recursively compute all the values.
  */
-										/*sRGB	 709 2.2 2.4 P3*/
-static const int32_t gamma_numerator01[] = { 31308,	180000,	0,	0,	0};
-static const int32_t gamma_numerator02[] = { 12920,	4500,	0,	0,	0};
-static const int32_t gamma_numerator03[] = { 55,	99,		0,	0,	0};
-static const int32_t gamma_numerator04[] = { 55,	99,		0,	0,	0};
-static const int32_t gamma_numerator05[] = { 2400,	2200,	2200, 2400, 2600};
+											 /*sRGB     709     2.2 2.4 P3*/
+static const int32_t regamma_numerator01[] = { 31308,   180000, 0,  0,  0};
+static const int32_t regamma_numerator02[] = { 12920,   4500,   0,  0,  0};
+static const int32_t regamma_numerator03[] = { 55,      99,     0,  0,  0};
+static const int32_t regamma_numerator04[] = { 55,      99,     0,  0,  0};
+static const int32_t regamma_numerator05[] = { 2400,    2200,   2200, 2400, 2600};
+
+static const int32_t degamma_numerator01[] = { 40450,   810000, 0,  0,  0};
+static const int32_t degamma_numerator02[] = { 12920,   4500,   0,  0,  0};
+static const int32_t degamma_numerator03[] = { 55,      99,     0,  0,  0};
+static const int32_t degamma_numerator04[] = { 55,      99,     0,  0,  0};
+static const int32_t degamma_numerator05[] = { 2400,    2200,   2200, 2400, 2600};
 
 /* one-time setup of X points */
 void setup_x_points_distribution(void)
@@ -288,7 +294,8 @@ struct dividers {
 };
 
 
-static bool build_coefficients(struct gamma_coefficients *coefficients, enum dc_transfer_func_predefined type)
+static bool build_coefficients(struct gamma_coefficients *coefficients,
+		enum dc_transfer_func_predefined type, bool isRegamma)
 {
 
 	uint32_t i = 0;
@@ -311,16 +318,29 @@ static bool build_coefficients(struct gamma_coefficients *coefficients, enum dc_
 	}
 
 	do {
-		coefficients->a0[i] = dc_fixpt_from_fraction(
-			gamma_numerator01[index], 10000000);
-		coefficients->a1[i] = dc_fixpt_from_fraction(
-			gamma_numerator02[index], 1000);
-		coefficients->a2[i] = dc_fixpt_from_fraction(
-			gamma_numerator03[index], 1000);
-		coefficients->a3[i] = dc_fixpt_from_fraction(
-			gamma_numerator04[index], 1000);
-		coefficients->user_gamma[i] = dc_fixpt_from_fraction(
-			gamma_numerator05[index], 1000);
+		if (isRegamma) {
+			coefficients->a0[i] = dc_fixpt_from_fraction(
+				regamma_numerator01[index], 10000000);
+			coefficients->a1[i] = dc_fixpt_from_fraction(
+				regamma_numerator02[index], 1000);
+			coefficients->a2[i] = dc_fixpt_from_fraction(
+				regamma_numerator03[index], 1000);
+			coefficients->a3[i] = dc_fixpt_from_fraction(
+				regamma_numerator04[index], 1000);
+			coefficients->user_gamma[i] = dc_fixpt_from_fraction(
+				regamma_numerator05[index], 1000);
+		} else {
+			coefficients->a0[i] = dc_fixpt_from_fraction(
+				degamma_numerator01[index], 10000000);
+			coefficients->a1[i] = dc_fixpt_from_fraction(
+				degamma_numerator02[index], 1000);
+			coefficients->a2[i] = dc_fixpt_from_fraction(
+				degamma_numerator03[index], 1000);
+			coefficients->a3[i] = dc_fixpt_from_fraction(
+				degamma_numerator04[index], 1000);
+			coefficients->user_gamma[i] = dc_fixpt_from_fraction(
+				degamma_numerator05[index], 1000);
+		}
 
 		++i;
 	} while (i != ARRAY_SIZE(coefficients->a0));
@@ -833,7 +853,7 @@ static bool build_regamma(struct pwl_float_data_ex *rgb_regamma,
 	if (!coeff)
 		goto release;
 
-	if (!build_coefficients(coeff, type))
+	if (!build_coefficients(coeff, type, true))
 		goto release;
 
 	memset(cal_buffer->buffer, 0, NUM_PTS_IN_REGION * sizeof(struct fixed31_32));
@@ -1082,7 +1102,7 @@ static bool build_degamma(struct pwl_float_data_ex *curve,
 	uint32_t begin_index, end_index;
 	bool ret = false;
 
-	if (!build_coefficients(&coeff, type))
+	if (!build_coefficients(&coeff, type, false))
 		goto release;
 
 	i = 0;
@@ -1685,7 +1705,7 @@ static void apply_degamma_for_user_regamma(struct pwl_float_data_ex *rgb_regamma
 	struct pwl_float_data_ex *rgb = rgb_regamma;
 	const struct hw_x_point *coord_x = coordinates_x;
 
-	build_coefficients(&coeff, TRANSFER_FUNCTION_SRGB);
+	build_coefficients(&coeff, TRANSFER_FUNCTION_SRGB, true);
 
 	i = 0;
 	while (i != hw_points_num + 1) {
-- 
2.25.1

[PATCH 19/33] drm/amd/display: Apply w/a for hard hang on HPD

[Mikita Lipski]

From: Qingqing Zhuo <qingqing.zhuo@amd.com>

[Why]
HPD disable and enable sequences are not mutually exclusive
on Linux. For HPDs that spans under 1s (i.e. HPD low = 1s),
part of the disable sequence (specifically, a request to SMU
to lower refclk) could come right before the call to PHY
enablement, causing DMUB to access an irresponsive PHY
and thus a hard hang on the system.

[How]
Disable 48mhz refclk off when there is any HPD status in
connected state.

Reviewed-by: Hersen Wu <hersenwu@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
---
 .../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 12 ++++++++-
 .../display/dc/irq/dcn21/irq_service_dcn21.c  | 25 +++++++++++++++++++
 .../display/dc/irq/dcn21/irq_service_dcn21.h  |  2 ++
 .../gpu/drm/amd/display/dc/irq/irq_service.c  |  2 +-
 .../gpu/drm/amd/display/dc/irq/irq_service.h  |  4 +++
 5 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
index c6f494f0dcea..3fabf32a0558 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
@@ -42,6 +42,7 @@
 #include "clk/clk_10_0_2_sh_mask.h"
 #include "renoir_ip_offset.h"
 
+#include "irq/dcn21/irq_service_dcn21.h"
 
 /* Constants */
 
@@ -129,9 +130,11 @@ void rn_update_clocks(struct clk_mgr *clk_mgr_base,
 	struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
 	struct dc *dc = clk_mgr_base->ctx->dc;
 	int display_count;
+	int irq_src;
 	bool update_dppclk = false;
 	bool update_dispclk = false;
 	bool dpp_clock_lowered = false;
+	uint32_t hpd_state;
 
 	struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu;
 
@@ -147,8 +150,15 @@ void rn_update_clocks(struct clk_mgr *clk_mgr_base,
 		if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_LOW_POWER) {
 
 			display_count = rn_get_active_display_cnt_wa(dc, context);
+
+			for (irq_src = DC_IRQ_SOURCE_HPD1; irq_src <= DC_IRQ_SOURCE_HPD5; irq_src++) {
+				hpd_state = dal_get_hpd_state_dcn21(dc->res_pool->irqs, irq_src);
+				if (hpd_state)
+					break;
+			}
+
 			/* if we can go lower, go lower */
-			if (display_count == 0) {
+			if (display_count == 0 && !hpd_state) {
 				rn_vbios_smu_set_dcn_low_power_state(clk_mgr, DCN_PWR_STATE_LOW_POWER);
 				/* update power state */
 				clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER;
diff --git a/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c b/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c
index ed54e1c819be..685528734575 100644
--- a/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c
+++ b/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c
@@ -135,6 +135,31 @@ enum dc_irq_source to_dal_irq_source_dcn21(
 	return DC_IRQ_SOURCE_INVALID;
 }
 
+uint32_t dal_get_hpd_state_dcn21(struct irq_service *irq_service, enum dc_irq_source source)
+{
+	const struct irq_source_info *info;
+	uint32_t addr;
+	uint32_t value;
+	uint32_t current_status;
+
+	info = find_irq_source_info(irq_service, source);
+	if (!info)
+		return 0;
+
+	addr = info->status_reg;
+	if (!addr)
+		return 0;
+
+	value = dm_read_reg(irq_service->ctx, addr);
+	current_status =
+		get_reg_field_value(
+			value,
+			HPD0_DC_HPD_INT_STATUS,
+			DC_HPD_SENSE);
+
+	return current_status;
+}
+
 static bool hpd_ack(
 	struct irq_service *irq_service,
 	const struct irq_source_info *info)
diff --git a/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.h b/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.h
index da2bd0e93d7a..3df2ceeb2b70 100644
--- a/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.h
+++ b/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.h
@@ -31,4 +31,6 @@
 struct irq_service *dal_irq_service_dcn21_create(
 	struct irq_service_init_data *init_data);
 
+uint32_t dal_get_hpd_state_dcn21(struct irq_service *irq_service, enum dc_irq_source source);
+
 #endif
diff --git a/drivers/gpu/drm/amd/display/dc/irq/irq_service.c b/drivers/gpu/drm/amd/display/dc/irq/irq_service.c
index a2a4fbeb83f8..4db1133e4466 100644
--- a/drivers/gpu/drm/amd/display/dc/irq/irq_service.c
+++ b/drivers/gpu/drm/amd/display/dc/irq/irq_service.c
@@ -79,7 +79,7 @@ void dal_irq_service_destroy(struct irq_service **irq_service)
 	*irq_service = NULL;
 }
 
-static const struct irq_source_info *find_irq_source_info(
+const struct irq_source_info *find_irq_source_info(
 	struct irq_service *irq_service,
 	enum dc_irq_source source)
 {
diff --git a/drivers/gpu/drm/amd/display/dc/irq/irq_service.h b/drivers/gpu/drm/amd/display/dc/irq/irq_service.h
index dbfcb096eedd..e60b82480093 100644
--- a/drivers/gpu/drm/amd/display/dc/irq/irq_service.h
+++ b/drivers/gpu/drm/amd/display/dc/irq/irq_service.h
@@ -69,6 +69,10 @@ struct irq_service {
 	const struct irq_service_funcs *funcs;
 };
 
+const struct irq_source_info *find_irq_source_info(
+	struct irq_service *irq_service,
+	enum dc_irq_source source);
+
 void dal_irq_service_construct(
 	struct irq_service *irq_service,
 	struct irq_service_init_data *init_data);
-- 
2.25.1

[PATCH 20/33] drm/amd/display: Optimize bandwidth on following fast update

[Mikita Lipski]

From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>

[Why]
The current call to optimize_bandwidth never occurs because flip is
always pending from the FULL and FAST updates.

[How]
Optimize on the following flip when it's a FAST update and we know we
aren't going to be modifying the clocks again.

Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index f58d3956f3e2..822239b59a78 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1801,6 +1801,11 @@ void dc_post_update_surfaces_to_stream(struct dc *dc)
 
 	post_surface_trace(dc);
 
+	if (dc->ctx->dce_version >= DCE_VERSION_MAX)
+		TRACE_DCN_CLOCK_STATE(&context->bw_ctx.bw.dcn.clk);
+	else
+		TRACE_DCE_CLOCK_STATE(&context->bw_ctx.bw.dce);
+
 	if (is_flip_pending_in_pipes(dc, context))
 		return;
 
@@ -2986,6 +2991,9 @@ void dc_commit_updates_for_stream(struct dc *dc,
 			if (new_pipe->plane_state && new_pipe->plane_state != old_pipe->plane_state)
 				new_pipe->plane_state->force_full_update = true;
 		}
+	} else if (update_type == UPDATE_TYPE_FAST) {
+		/* Previous frame finished and HW is ready for optimization. */
+		dc_post_update_surfaces_to_stream(dc);
 	}
 
 
@@ -3042,15 +3050,6 @@ void dc_commit_updates_for_stream(struct dc *dc,
 				pipe_ctx->plane_state->force_full_update = false;
 		}
 	}
-	/*let's use current_state to update watermark etc*/
-	if (update_type >= UPDATE_TYPE_FULL) {
-		dc_post_update_surfaces_to_stream(dc);
-
-		if (dc_ctx->dce_version >= DCE_VERSION_MAX)
-			TRACE_DCN_CLOCK_STATE(&context->bw_ctx.bw.dcn.clk);
-		else
-			TRACE_DCE_CLOCK_STATE(&context->bw_ctx.bw.dce);
-	}
 
 	return;
 
-- 
2.25.1

[PATCH 21/33] drm/amd/display: Refine condition of cursor visibility for pipe-split

[Mikita Lipski]

From: Dale Zhao <dale.zhao@amd.com>

[Why]
In some scenarios like fullscreen game, major plane is scaled. Then
if a upper layer owns the cursor, cursor is invisiable in the
majority of the screen.

[How]
Instead assuming upper plane handles cursor, summing up upper
split planes on the same layer. If whole upper plane covers current
half/whole pipe plane, disable cursor.

Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Dale Zhao <dale.zhao@amd.com>
---
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 43 +++++++++++--------
 1 file changed, 24 insertions(+), 19 deletions(-)

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 b4cf2e92694c..e1edbfa761f1 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
@@ -3241,13 +3241,11 @@ void dcn10_update_dchub(struct dce_hwseq *hws, struct dchub_init_data *dh_data)
 
 static bool dcn10_can_pipe_disable_cursor(struct pipe_ctx *pipe_ctx)
 {
-	struct pipe_ctx *test_pipe;
+	struct pipe_ctx *test_pipe, *split_pipe;
 	const struct scaler_data *scl_data = &pipe_ctx->plane_res.scl_data;
-	const struct rect *r1 = &scl_data->recout, *r2;
-	int r1_r = r1->x + r1->width, r1_b = r1->y + r1->height, r2_r, r2_b;
+	struct rect r1 = scl_data->recout, r2, r2_half;
+	int r1_r = r1.x + r1.width, r1_b = r1.y + r1.height, r2_r, r2_b;
 	int cur_layer = pipe_ctx->plane_state->layer_index;
-	bool upper_pipe_exists = false;
-	struct fixed31_32 one = dc_fixpt_from_int(1);
 
 	/**
 	 * Disable the cursor if there's another pipe above this with a
@@ -3256,26 +3254,33 @@ static bool dcn10_can_pipe_disable_cursor(struct pipe_ctx *pipe_ctx)
 	 */
 	for (test_pipe = pipe_ctx->top_pipe; test_pipe;
 	     test_pipe = test_pipe->top_pipe) {
-		if (!test_pipe->plane_state->visible)
+		// Skip invisible layer and pipe-split plane on same layer
+		if (!test_pipe->plane_state->visible || test_pipe->plane_state->layer_index == cur_layer)
 			continue;
 
-		r2 = &test_pipe->plane_res.scl_data.recout;
-		r2_r = r2->x + r2->width;
-		r2_b = r2->y + r2->height;
+		r2 = test_pipe->plane_res.scl_data.recout;
+		r2_r = r2.x + r2.width;
+		r2_b = r2.y + r2.height;
+		split_pipe = test_pipe;
 
-		if (r1->x >= r2->x && r1->y >= r2->y && r1_r <= r2_r && r1_b <= r2_b)
-			return true;
+		/**
+		 * There is another half plane on same layer because of
+		 * pipe-split, merge together per same height.
+		 */
+		for (split_pipe = pipe_ctx->top_pipe; split_pipe;
+		     split_pipe = split_pipe->top_pipe)
+			if (split_pipe->plane_state->layer_index == test_pipe->plane_state->layer_index) {
+				r2_half = split_pipe->plane_res.scl_data.recout;
+				r2.x = (r2_half.x < r2.x) ? r2_half.x : r2.x;
+				r2.width = r2.width + r2_half.width;
+				r2_r = r2.x + r2.width;
+				break;
+			}
 
-		if (test_pipe->plane_state->layer_index < cur_layer)
-			upper_pipe_exists = true;
+		if (r1.x >= r2.x && r1.y >= r2.y && r1_r <= r2_r && r1_b <= r2_b)
+			return true;
 	}
 
-	// if plane scaled, assume an upper plane can handle cursor if it exists.
-	if (upper_pipe_exists &&
-			(scl_data->ratios.horz.value != one.value ||
-			scl_data->ratios.vert.value != one.value))
-		return true;
-
 	return false;
 }
 
-- 
2.25.1

[PATCH 22/33] drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3

[Mikita Lipski]

From: Hersen Wu <hersenwu@amd.com>

[Why]
call stack of amdgpu dsc mst pbn, slot num calculation is as below:
-compute_bpp_x16_from_target_bandwidth
-decide_dsc_target_bpp_x16
-setup_dsc_config
-dc_dsc_compute_bandwidth_range
-compute_mst_dsc_configs_for_link
-compute_mst_dsc_configs_for_state

from pbn -> dsc target bpp_x16

bpp_x16 is calulated by compute_bpp_x16_from_target_bandwidth.
Beside pixel clock and bpp, num_slices_h and bpp_increment_div
will also affect bpp_x16.

from dsc target bpp_x16 -> pbn

within dm_update_mst_vcpi_slots_for_dsc,
pbn = drm_dp_calc_pbn_mode(clock, bpp_x16, true);

drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc)
{
  return DIV_ROUND_UP_ULL(mul_u32_u32(clock * (bpp / 16), 64 * 1006),
            8 * 54 * 1000 * 1000);
}

bpp / 16 trunc digits after decimal point. This will cause calculation
delta. drm_dp_calc_pbn_mode does not have other informations,
like num_slices_h, bpp_increment_div. therefore, it does not do revese
calcuation properly from bpp_x16 to pbn.

pbn from drm_dp_calc_pbn_mode is less than pbn from
compute_mst_dsc_configs_for_state. This cause not enough mst slot
allocated to display. display could not visually light up.

[How]
pass pbn from compute_mst_dsc_configs_for_state to
dm_update_mst_vcpi_slots_for_dsc

Cc: stable@vger.kernel.org

Reviewed-by: Scott Foster <Scott.Foster@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Hersen Wu <hersenwu@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 22 ++++++++++++++-----
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 18 +++++++--------
 .../display/amdgpu_dm/amdgpu_dm_mst_types.h   | 11 +++++++++-
 3 files changed, 34 insertions(+), 17 deletions(-)

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 a6c8c30f8c2d..87499ef5282c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7090,14 +7090,15 @@ const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs = {
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state,
-					    struct dc_state *dc_state)
+					    struct dc_state *dc_state,
+					    struct dsc_mst_fairness_vars *vars)
 {
 	struct dc_stream_state *stream = NULL;
 	struct drm_connector *connector;
 	struct drm_connector_state *new_con_state;
 	struct amdgpu_dm_connector *aconnector;
 	struct dm_connector_state *dm_conn_state;
-	int i, j, clock, bpp;
+	int i, j, clock;
 	int vcpi, pbn_div, pbn = 0;
 
 	for_each_new_connector_in_state(state, connector, new_con_state, i) {
@@ -7136,9 +7137,15 @@ static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state,
 		}
 
 		pbn_div = dm_mst_get_pbn_divider(stream->link);
-		bpp = stream->timing.dsc_cfg.bits_per_pixel;
 		clock = stream->timing.pix_clk_100hz / 10;
-		pbn = drm_dp_calc_pbn_mode(clock, bpp, true);
+		/* pbn is calculated by compute_mst_dsc_configs_for_state*/
+		for (j = 0; j < dc_state->stream_count; j++) {
+			if (vars[j].aconnector == aconnector) {
+				pbn = vars[j].pbn;
+				break;
+			}
+		}
+
 		vcpi = drm_dp_mst_atomic_enable_dsc(state,
 						    aconnector->port,
 						    pbn, pbn_div,
@@ -10542,6 +10549,9 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
 	int ret, i;
 	bool lock_and_validation_needed = false;
 	struct dm_crtc_state *dm_old_crtc_state;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct dsc_mst_fairness_vars vars[MAX_PIPES];
+#endif
 
 	trace_amdgpu_dm_atomic_check_begin(state);
 
@@ -10772,10 +10782,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
 			goto fail;
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
-		if (!compute_mst_dsc_configs_for_state(state, dm_state->context))
+		if (!compute_mst_dsc_configs_for_state(state, dm_state->context, vars))
 			goto fail;
 
-		ret = dm_update_mst_vcpi_slots_for_dsc(state, dm_state->context);
+		ret = dm_update_mst_vcpi_slots_for_dsc(state, dm_state->context, vars);
 		if (ret)
 			goto fail;
 #endif
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 705f2e67edb5..1a99fcc27078 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
@@ -518,12 +518,7 @@ struct dsc_mst_fairness_params {
 	uint32_t num_slices_h;
 	uint32_t num_slices_v;
 	uint32_t bpp_overwrite;
-};
-
-struct dsc_mst_fairness_vars {
-	int pbn;
-	bool dsc_enabled;
-	int bpp_x16;
+	struct amdgpu_dm_connector *aconnector;
 };
 
 static int kbps_to_peak_pbn(int kbps)
@@ -750,12 +745,12 @@ static void try_disable_dsc(struct drm_atomic_state *state,
 
 static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 					     struct dc_state *dc_state,
-					     struct dc_link *dc_link)
+					     struct dc_link *dc_link,
+					     struct dsc_mst_fairness_vars *vars)
 {
 	int i;
 	struct dc_stream_state *stream;
 	struct dsc_mst_fairness_params params[MAX_PIPES];
-	struct dsc_mst_fairness_vars vars[MAX_PIPES];
 	struct amdgpu_dm_connector *aconnector;
 	int count = 0;
 	bool debugfs_overwrite = false;
@@ -776,6 +771,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 		params[count].timing = &stream->timing;
 		params[count].sink = stream->sink;
 		aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
+		params[count].aconnector = aconnector;
 		params[count].port = aconnector->port;
 		params[count].clock_force_enable = aconnector->dsc_settings.dsc_force_enable;
 		if (params[count].clock_force_enable == DSC_CLK_FORCE_ENABLE)
@@ -798,6 +794,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 	}
 	/* Try no compression */
 	for (i = 0; i < count; i++) {
+		vars[i].aconnector = params[i].aconnector;
 		vars[i].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps);
 		vars[i].dsc_enabled = false;
 		vars[i].bpp_x16 = 0;
@@ -851,7 +848,8 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 }
 
 bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
-				       struct dc_state *dc_state)
+				       struct dc_state *dc_state,
+				       struct dsc_mst_fairness_vars *vars)
 {
 	int i, j;
 	struct dc_stream_state *stream;
@@ -882,7 +880,7 @@ bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
 			return false;
 
 		mutex_lock(&aconnector->mst_mgr.lock);
-		if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link)) {
+		if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link, vars)) {
 			mutex_unlock(&aconnector->mst_mgr.lock);
 			return false;
 		}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
index b38bd68121ce..900d3f7a8498 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
@@ -39,8 +39,17 @@ void
 dm_dp_create_fake_mst_encoders(struct amdgpu_device *adev);
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
+
+struct dsc_mst_fairness_vars {
+	int pbn;
+	bool dsc_enabled;
+	int bpp_x16;
+	struct amdgpu_dm_connector *aconnector;
+};
+
 bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
-				       struct dc_state *dc_state);
+				       struct dc_state *dc_state,
+				       struct dsc_mst_fairness_vars *vars);
 #endif
 
 #endif
-- 
2.25.1

[PATCH 22/33] drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3

[Mikita Lipski]

From: Hersen Wu <hersenwu@amd.com>

[Why]
call stack of amdgpu dsc mst pbn, slot num calculation is as below:
-compute_bpp_x16_from_target_bandwidth
-decide_dsc_target_bpp_x16
-setup_dsc_config
-dc_dsc_compute_bandwidth_range
-compute_mst_dsc_configs_for_link
-compute_mst_dsc_configs_for_state

from pbn -> dsc target bpp_x16

bpp_x16 is calulated by compute_bpp_x16_from_target_bandwidth.
Beside pixel clock and bpp, num_slices_h and bpp_increment_div
will also affect bpp_x16.

from dsc target bpp_x16 -> pbn

within dm_update_mst_vcpi_slots_for_dsc,
pbn = drm_dp_calc_pbn_mode(clock, bpp_x16, true);

drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc)
{
  return DIV_ROUND_UP_ULL(mul_u32_u32(clock * (bpp / 16), 64 * 1006),
            8 * 54 * 1000 * 1000);
}

bpp / 16 trunc digits after decimal point. This will cause calculation
delta. drm_dp_calc_pbn_mode does not have other informations,
like num_slices_h, bpp_increment_div. therefore, it does not do revese
calcuation properly from bpp_x16 to pbn.

pbn from drm_dp_calc_pbn_mode is less than pbn from
compute_mst_dsc_configs_for_state. This cause not enough mst slot
allocated to display. display could not visually light up.

[How]
pass pbn from compute_mst_dsc_configs_for_state to
dm_update_mst_vcpi_slots_for_dsc

Cc: stable@vger.kernel.org

Reviewed-by: Scott Foster <Scott.Foster@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Hersen Wu <hersenwu@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 22 ++++++++++++++-----
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 18 +++++++--------
 .../display/amdgpu_dm/amdgpu_dm_mst_types.h   | 11 +++++++++-
 3 files changed, 34 insertions(+), 17 deletions(-)

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 a6c8c30f8c2d..87499ef5282c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7090,14 +7090,15 @@ const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs = {
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state,
-					    struct dc_state *dc_state)
+					    struct dc_state *dc_state,
+					    struct dsc_mst_fairness_vars *vars)
 {
 	struct dc_stream_state *stream = NULL;
 	struct drm_connector *connector;
 	struct drm_connector_state *new_con_state;
 	struct amdgpu_dm_connector *aconnector;
 	struct dm_connector_state *dm_conn_state;
-	int i, j, clock, bpp;
+	int i, j, clock;
 	int vcpi, pbn_div, pbn = 0;
 
 	for_each_new_connector_in_state(state, connector, new_con_state, i) {
@@ -7136,9 +7137,15 @@ static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state,
 		}
 
 		pbn_div = dm_mst_get_pbn_divider(stream->link);
-		bpp = stream->timing.dsc_cfg.bits_per_pixel;
 		clock = stream->timing.pix_clk_100hz / 10;
-		pbn = drm_dp_calc_pbn_mode(clock, bpp, true);
+		/* pbn is calculated by compute_mst_dsc_configs_for_state*/
+		for (j = 0; j < dc_state->stream_count; j++) {
+			if (vars[j].aconnector == aconnector) {
+				pbn = vars[j].pbn;
+				break;
+			}
+		}
+
 		vcpi = drm_dp_mst_atomic_enable_dsc(state,
 						    aconnector->port,
 						    pbn, pbn_div,
@@ -10542,6 +10549,9 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
 	int ret, i;
 	bool lock_and_validation_needed = false;
 	struct dm_crtc_state *dm_old_crtc_state;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct dsc_mst_fairness_vars vars[MAX_PIPES];
+#endif
 
 	trace_amdgpu_dm_atomic_check_begin(state);
 
@@ -10772,10 +10782,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
 			goto fail;
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
-		if (!compute_mst_dsc_configs_for_state(state, dm_state->context))
+		if (!compute_mst_dsc_configs_for_state(state, dm_state->context, vars))
 			goto fail;
 
-		ret = dm_update_mst_vcpi_slots_for_dsc(state, dm_state->context);
+		ret = dm_update_mst_vcpi_slots_for_dsc(state, dm_state->context, vars);
 		if (ret)
 			goto fail;
 #endif
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 705f2e67edb5..1a99fcc27078 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
@@ -518,12 +518,7 @@ struct dsc_mst_fairness_params {
 	uint32_t num_slices_h;
 	uint32_t num_slices_v;
 	uint32_t bpp_overwrite;
-};
-
-struct dsc_mst_fairness_vars {
-	int pbn;
-	bool dsc_enabled;
-	int bpp_x16;
+	struct amdgpu_dm_connector *aconnector;
 };
 
 static int kbps_to_peak_pbn(int kbps)
@@ -750,12 +745,12 @@ static void try_disable_dsc(struct drm_atomic_state *state,
 
 static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 					     struct dc_state *dc_state,
-					     struct dc_link *dc_link)
+					     struct dc_link *dc_link,
+					     struct dsc_mst_fairness_vars *vars)
 {
 	int i;
 	struct dc_stream_state *stream;
 	struct dsc_mst_fairness_params params[MAX_PIPES];
-	struct dsc_mst_fairness_vars vars[MAX_PIPES];
 	struct amdgpu_dm_connector *aconnector;
 	int count = 0;
 	bool debugfs_overwrite = false;
@@ -776,6 +771,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 		params[count].timing = &stream->timing;
 		params[count].sink = stream->sink;
 		aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
+		params[count].aconnector = aconnector;
 		params[count].port = aconnector->port;
 		params[count].clock_force_enable = aconnector->dsc_settings.dsc_force_enable;
 		if (params[count].clock_force_enable == DSC_CLK_FORCE_ENABLE)
@@ -798,6 +794,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 	}
 	/* Try no compression */
 	for (i = 0; i < count; i++) {
+		vars[i].aconnector = params[i].aconnector;
 		vars[i].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps);
 		vars[i].dsc_enabled = false;
 		vars[i].bpp_x16 = 0;
@@ -851,7 +848,8 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
 }
 
 bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
-				       struct dc_state *dc_state)
+				       struct dc_state *dc_state,
+				       struct dsc_mst_fairness_vars *vars)
 {
 	int i, j;
 	struct dc_stream_state *stream;
@@ -882,7 +880,7 @@ bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
 			return false;
 
 		mutex_lock(&aconnector->mst_mgr.lock);
-		if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link)) {
+		if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link, vars)) {
 			mutex_unlock(&aconnector->mst_mgr.lock);
 			return false;
 		}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
index b38bd68121ce..900d3f7a8498 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
@@ -39,8 +39,17 @@ void
 dm_dp_create_fake_mst_encoders(struct amdgpu_device *adev);
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
+
+struct dsc_mst_fairness_vars {
+	int pbn;
+	bool dsc_enabled;
+	int bpp_x16;
+	struct amdgpu_dm_connector *aconnector;
+};
+
 bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
-				       struct dc_state *dc_state);
+				       struct dc_state *dc_state,
+				       struct dsc_mst_fairness_vars *vars);
 #endif
 
 #endif
-- 
2.25.1

[PATCH 23/33] drm/amd/display: Add periodic detection when zstate is enabled

[Mikita Lipski]

From: Eric Yang <Eric.Yang2@amd.com>

[Why]
When system is in Z10 HPD interrupts cannot fire, we may miss display
configuration changes.

[How]
When Zstate is enabled, if DMUB indicate DCN has lost power, do a
complete detection periodically.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c  |  6 ++++++
 .../drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c   |  2 ++
 drivers/gpu/drm/amd/display/dc/core/dc.c               |  2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c          |  4 ++++
 drivers/gpu/drm/amd/display/dc/dc.h                    |  2 +-
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c     |  2 +-
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.h     |  2 +-
 drivers/gpu/drm/amd/display/dc/dm_helpers.h            |  4 ++++
 drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h      |  2 +-
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h            |  4 ++++
 drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c      |  8 ++++++++
 drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h      |  2 ++
 drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c        | 10 +++++++++-
 13 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 8c1792637836..1aa69dd8e02f 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -793,4 +793,10 @@ void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz)
        // FPGA programming for this clock in diags framework that
        // needs to go through dm layer, therefore leave dummy interace here
 }
+
+
+void dm_helpers_enable_periodic_detection(struct dc_context *ctx, bool enable)
+{
+	/* TODO: add peridic detection implementation */
+}
 #endif
\ No newline at end of file
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
index 1414da4b95d7..d7bf9283dc90 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c
@@ -142,6 +142,7 @@ static void dcn31_update_clocks(struct clk_mgr *clk_mgr_base,
 		if (new_clocks->zstate_support == DCN_ZSTATE_SUPPORT_ALLOW &&
 				new_clocks->zstate_support != clk_mgr_base->clks.zstate_support) {
 			dcn31_smu_set_Z9_support(clk_mgr, true);
+			dm_helpers_enable_periodic_detection(clk_mgr_base->ctx, true);
 			clk_mgr_base->clks.zstate_support = new_clocks->zstate_support;
 		}
 
@@ -166,6 +167,7 @@ static void dcn31_update_clocks(struct clk_mgr *clk_mgr_base,
 		if (new_clocks->zstate_support == DCN_ZSTATE_SUPPORT_DISALLOW &&
 				new_clocks->zstate_support != clk_mgr_base->clks.zstate_support) {
 			dcn31_smu_set_Z9_support(clk_mgr, false);
+			dm_helpers_enable_periodic_detection(clk_mgr_base->ctx, false);
 			clk_mgr_base->clks.zstate_support = new_clocks->zstate_support;
 		}
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 822239b59a78..7a1f910d711e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1562,7 +1562,7 @@ static uint8_t get_stream_mask(struct dc *dc, struct dc_state *context)
 }
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
-void dc_z10_restore(struct dc *dc)
+void dc_z10_restore(const struct dc *dc)
 {
 	if (dc->hwss.z10_restore)
 		dc->hwss.z10_restore(dc);
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 61e49671fed5..46933a43ef2e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1250,6 +1250,10 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason)
 		}
 	}
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	dc_z10_restore(dc);
+#endif
+
 	/* get out of low power state */
 	if (!can_apply_seamless_boot && reason != DETECT_REASON_BOOT)
 		clk_mgr_exit_optimized_pwr_state(dc, dc->clk_mgr);
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index ece44796a74f..134faa7a1937 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1363,7 +1363,7 @@ void dc_hardware_release(struct dc *dc);
 
 bool dc_set_psr_allow_active(struct dc *dc, bool enable);
 #if defined(CONFIG_DRM_AMD_DC_DCN)
-void dc_z10_restore(struct dc *dc);
+void dc_z10_restore(const struct dc *dc);
 void dc_z10_save_init(struct dc *dc);
 #endif
 
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 83f223d745fa..d3598ce1f5de 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -425,7 +425,7 @@ void dcn31_z10_save_init(struct dc *dc)
 	dc_dmub_srv_wait_idle(dc->ctx->dmub_srv);
 }
 
-void dcn31_z10_restore(struct dc *dc)
+void dcn31_z10_restore(const struct dc *dc)
 {
 	union dmub_rb_cmd cmd;
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.h b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.h
index 140435e4f7ff..7ae45dd202d9 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.h
@@ -43,7 +43,7 @@ void dcn31_enable_power_gating_plane(
 
 void dcn31_update_info_frame(struct pipe_ctx *pipe_ctx);
 
-void dcn31_z10_restore(struct dc *dc);
+void dcn31_z10_restore(const struct dc *dc);
 void dcn31_z10_save_init(struct dc *dc);
 
 void dcn31_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on);
diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h
index 8de554fb98b9..3a905fb667bf 100644
--- a/drivers/gpu/drm/amd/display/dc/dm_helpers.h
+++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h
@@ -160,6 +160,10 @@ void dm_set_dcn_clocks(
 		struct dc_context *ctx,
 		struct dc_clocks *clks);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+void dm_helpers_enable_periodic_detection(struct dc_context *ctx, bool enable);
+#endif
+
 void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz);
 
 bool dm_helpers_dmub_outbox_interrupt_control(struct dc_context *ctx, bool enable);
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
index ad5f2adcc40d..d50f4bd06b5d 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -236,7 +236,7 @@ struct hw_sequencer_funcs {
 			const struct tg_color *solid_color,
 			int width, int height, int offset);
 
-	void (*z10_restore)(struct dc *dc);
+	void (*z10_restore)(const struct dc *dc);
 	void (*z10_save_init)(struct dc *dc);
 
 	void (*update_visual_confirm_color)(struct dc *dc,
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index caf961bb633f..ef324fc39315 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -358,6 +358,8 @@ struct dmub_srv_hw_funcs {
 	uint32_t (*get_current_time)(struct dmub_srv *dmub);
 
 	void (*get_diagnostic_data)(struct dmub_srv *dmub, struct dmub_diagnostic_data *dmub_oca);
+
+	bool (*should_detect)(struct dmub_srv *dmub);
 };
 
 /**
@@ -724,6 +726,8 @@ bool dmub_srv_get_outbox0_msg(struct dmub_srv *dmub, struct dmcub_trace_buf_entr
 
 bool dmub_srv_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_data *diag_data);
 
+bool dmub_srv_should_detect(struct dmub_srv *dmub);
+
 #if defined(__cplusplus)
 }
 #endif
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
index fc667cb17eb0..6ac370c15dea 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
@@ -432,3 +432,11 @@ void dmub_dcn31_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnosti
 	REG_GET(DMCUB_REGION3_CW6_TOP_ADDRESS, DMCUB_REGION3_CW6_ENABLE, &is_cw6_enabled);
 	diag_data->is_cw6_enabled = is_cw6_enabled;
 }
+
+bool dmub_dcn31_should_detect(struct dmub_srv *dmub)
+{
+	uint32_t fw_boot_status = REG_READ(DMCUB_SCRATCH0);
+	bool should_detect = fw_boot_status & DMUB_FW_BOOT_STATUS_BIT_DETECTION_REQUIRED;
+	return should_detect;
+}
+
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
index bb62605d2ac8..59ddc81b5a0e 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
@@ -245,4 +245,6 @@ uint32_t dmub_dcn31_get_current_time(struct dmub_srv *dmub);
 
 void dmub_dcn31_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_data *diag_data);
 
+bool dmub_dcn31_should_detect(struct dmub_srv *dmub);
+
 #endif /* _DMUB_DCN31_H_ */
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index 75a91cfaf036..a6188d067d65 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -234,7 +234,7 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
 		funcs->set_outbox0_rptr = dmub_dcn31_set_outbox0_rptr;
 
 		funcs->get_diagnostic_data = dmub_dcn31_get_diagnostic_data;
-
+		funcs->should_detect = dmub_dcn31_should_detect;
 		funcs->get_current_time = dmub_dcn31_get_current_time;
 
 		break;
@@ -816,3 +816,11 @@ bool dmub_srv_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_
 	dmub->hw_funcs.get_diagnostic_data(dmub, diag_data);
 	return true;
 }
+
+bool dmub_srv_should_detect(struct dmub_srv *dmub)
+{
+	if (!dmub->hw_init || !dmub->hw_funcs.should_detect)
+		return false;
+
+	return dmub->hw_funcs.should_detect(dmub);
+}
-- 
2.25.1

[PATCH 24/33] drm/amd/display: Add helper for blanking all dp displays

[Mikita Lipski]

From: "Leo (Hanghong) Ma" <hanghong.ma@amd.com>

[Why & How]
The codes to blank all dp display have been called many times,
so add a helper in dc_link to make it more concise.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c      |  2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 45 +++++++++++++++++++
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  1 +
 .../display/dc/dce110/dce110_hw_sequencer.c   | 24 ++--------
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 41 ++---------------
 .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    | 39 ++--------------
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    | 38 ++--------------
 7 files changed, 59 insertions(+), 131 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 7a1f910d711e..8bebfb0ca206 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1,4 +1,4 @@
-/*
+ /*
  * Copyright 2015 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
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 46933a43ef2e..a87a71b815ad 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1904,6 +1904,51 @@ static enum dc_status enable_link_dp_mst(
 	return enable_link_dp(state, pipe_ctx);
 }
 
+void blank_all_dp_displays(struct dc *dc, bool hw_init)
+{
+	unsigned int i, j, fe;
+	uint8_t dpcd_power_state = '\0';
+	enum dc_status status = DC_ERROR_UNEXPECTED;
+
+	for (i = 0; i < dc->link_count; i++) {
+		enum signal_type signal = dc->links[i]->connector_signal;
+
+		if ((signal == SIGNAL_TYPE_EDP) ||
+			(signal == SIGNAL_TYPE_DISPLAY_PORT)) {
+			if (hw_init && signal != SIGNAL_TYPE_EDP) {
+				/* DP 2.0 spec requires that we read LTTPR caps first */
+				dp_retrieve_lttpr_cap(dc->links[i]);
+				/* if any of the displays are lit up turn them off */
+				status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
+							&dpcd_power_state, sizeof(dpcd_power_state));
+			}
+
+			if ((signal != SIGNAL_TYPE_EDP && status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) ||
+				(!hw_init && dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc))) {
+				if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY &&
+						dc->links[i]->link_enc->funcs->get_dig_frontend) {
+					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);
+					if (fe == ENGINE_ID_UNKNOWN)
+						continue;
+
+					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
+						if (fe == dc->res_pool->stream_enc[j]->id) {
+							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
+									dc->res_pool->stream_enc[j]);
+							break;
+						}
+					}
+				}
+
+				if (!dc->links[i]->wa_flags.dp_keep_receiver_powered ||
+					(hw_init && signal != SIGNAL_TYPE_EDP))
+					dp_receiver_power_ctrl(dc->links[i], false);
+			}
+		}
+	}
+
+}
+
 static bool get_ext_hdmi_settings(struct pipe_ctx *pipe_ctx,
 		enum engine_id eng_id,
 		struct ext_hdmi_settings *settings)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 56340a176554..899e20725d87 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -277,6 +277,7 @@ bool dc_link_setup_psr(struct dc_link *dc_link,
 		struct psr_context *psr_context);
 
 void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
+void blank_all_dp_displays(struct dc *dc, bool hw_init);
 
 /* Request DC to detect if there is a Panel connected.
  * boot - If this call is during initial boot.
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 102f76462752..48f540f9d1d5 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
@@ -1649,31 +1649,13 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 
 static void power_down_encoders(struct dc *dc)
 {
-	int i, j;
+	int i;
+
+	blank_all_dp_displays(dc, false);
 
 	for (i = 0; i < dc->link_count; i++) {
 		enum signal_type signal = dc->links[i]->connector_signal;
 
-		if ((signal == SIGNAL_TYPE_EDP) ||
-			(signal == SIGNAL_TYPE_DISPLAY_PORT)) {
-			if (dc->links[i]->link_enc->funcs->get_dig_frontend &&
-				dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc)) {
-				unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
-									dc->links[i]->link_enc);
-
-				for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
-					if (fe == dc->res_pool->stream_enc[j]->id) {
-						dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
-									dc->res_pool->stream_enc[j]);
-						break;
-					}
-				}
-			}
-
-			if (!dc->links[i]->wa_flags.dp_keep_receiver_powered)
-				dp_receiver_power_ctrl(dc->links[i], false);
-		}
-
 		if (signal != SIGNAL_TYPE_EDP)
 			signal = SIGNAL_TYPE_NONE;
 
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 e1edbfa761f1..97dd2c418aa9 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
@@ -1366,7 +1366,7 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context)
 
 void dcn10_init_hw(struct dc *dc)
 {
-	int i, j;
+	int i;
 	struct abm *abm = dc->res_pool->abm;
 	struct dmcu *dmcu = dc->res_pool->dmcu;
 	struct dce_hwseq *hws = dc->hwseq;
@@ -1462,43 +1462,8 @@ void dcn10_init_hw(struct dc *dc)
 		dmub_enable_outbox_notification(dc);
 
 	/* we want to turn off all dp displays before doing detection */
-	if (dc->config.power_down_display_on_boot) {
-		uint8_t dpcd_power_state = '\0';
-		enum dc_status status = DC_ERROR_UNEXPECTED;
-
-		for (i = 0; i < dc->link_count; i++) {
-			if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
-				continue;
-
-			/* DP 2.0 requires that LTTPR Caps be read first */
-			dp_retrieve_lttpr_cap(dc->links[i]);
-
-			/*
-			 * If any of the displays are lit up turn them off.
-			 * The reason is that some MST hubs cannot be turned off
-			 * completely until we tell them to do so.
-			 * If not turned off, then displays connected to MST hub
-			 * won't light up.
-			 */
-			status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
-							&dpcd_power_state, sizeof(dpcd_power_state));
-			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
-				/* blank dp stream before power off receiver*/
-				if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
-					unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);
-
-					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
-						if (fe == dc->res_pool->stream_enc[j]->id) {
-							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
-										dc->res_pool->stream_enc[j]);
-							break;
-						}
-					}
-				}
-				dp_receiver_power_ctrl(dc->links[i], false);
-			}
-		}
-	}
+	if (dc->config.power_down_display_on_boot)
+		blank_all_dp_displays(dc, true);
 
 	/* If taking control over from VBIOS, we may want to optimize our first
 	 * mode set, so we need to skip powering down pipes until we know which
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 b132ebed09d4..01a90badd173 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -437,7 +437,7 @@ void dcn30_init_hw(struct dc *dc)
 	struct dce_hwseq *hws = dc->hwseq;
 	struct dc_bios *dcb = dc->ctx->dc_bios;
 	struct resource_pool *res_pool = dc->res_pool;
-	int i, j;
+	int i;
 	int edp_num;
 	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
 
@@ -534,41 +534,8 @@ void dcn30_init_hw(struct dc *dc)
 			hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
 
 	/* we want to turn off all dp displays before doing detection */
-	if (dc->config.power_down_display_on_boot) {
-		uint8_t dpcd_power_state = '\0';
-		enum dc_status status = DC_ERROR_UNEXPECTED;
-
-		for (i = 0; i < dc->link_count; i++) {
-			if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
-				continue;
-			/* DP 2.0 states that LTTPR regs must be read first */
-			dp_retrieve_lttpr_cap(dc->links[i]);
-
-			/* if any of the displays are lit up turn them off */
-			status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
-						     &dpcd_power_state, sizeof(dpcd_power_state));
-			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
-				/* blank dp stream before power off receiver*/
-				if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
-					unsigned int fe;
-
-					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
-										dc->links[i]->link_enc);
-					if (fe == ENGINE_ID_UNKNOWN)
-						continue;
-
-					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
-						if (fe == dc->res_pool->stream_enc[j]->id) {
-							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
-										dc->res_pool->stream_enc[j]);
-							break;
-						}
-					}
-				}
-				dp_receiver_power_ctrl(dc->links[i], false);
-			}
-		}
-	}
+	if (dc->config.power_down_display_on_boot)
+		blank_all_dp_displays(dc, true);
 
 	/* If taking control over from VBIOS, we may want to optimize our first
 	 * mode set, so we need to skip powering down pipes until we know which
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 d3598ce1f5de..3dbaf0f30388 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -70,7 +70,7 @@ void dcn31_init_hw(struct dc *dc)
 	struct dc_bios *dcb = dc->ctx->dc_bios;
 	struct resource_pool *res_pool = dc->res_pool;
 	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
-	int i, j;
+	int i;
 	int edp_num;
 
 	if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
@@ -174,40 +174,8 @@ void dcn31_init_hw(struct dc *dc)
 			hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
 
 	/* we want to turn off all dp displays before doing detection */
-	if (dc->config.power_down_display_on_boot) {
-		uint8_t dpcd_power_state = '\0';
-		enum dc_status status = DC_ERROR_UNEXPECTED;
-
-		for (i = 0; i < dc->link_count; i++) {
-			if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
-				continue;
-
-			/* if any of the displays are lit up turn them off */
-			status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
-						     &dpcd_power_state, sizeof(dpcd_power_state));
-			if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
-				/* blank dp stream before power off receiver*/
-				if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY &&
-						dc->links[i]->link_enc->funcs->get_dig_frontend) {
-					unsigned int fe;
-
-					fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
-										dc->links[i]->link_enc);
-					if (fe == ENGINE_ID_UNKNOWN)
-						continue;
-
-					for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
-						if (fe == dc->res_pool->stream_enc[j]->id) {
-							dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
-										dc->res_pool->stream_enc[j]);
-							break;
-						}
-					}
-				}
-				dp_receiver_power_ctrl(dc->links[i], false);
-			}
-		}
-	}
+	if (dc->config.power_down_display_on_boot)
+		blank_all_dp_displays(dc, true);
 
 	/* If taking control over from VBIOS, we may want to optimize our first
 	 * mode set, so we need to skip powering down pipes until we know which
-- 
2.25.1

[PATCH 25/33] drm/amd/display: [FW Promotion] Release 0.0.82

[Mikita Lipski]

From: Anthony Koo <Anthony.Koo@amd.com>

* PSR SMU optimizations
* MST dock fixes

Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
---
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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 8cf86f7cda41..2c4ec3cac70e 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -47,10 +47,10 @@
 
 /* Firmware versioning. */
 #ifdef DMUB_EXPOSE_VERSION
-#define DMUB_FW_VERSION_GIT_HASH 0x8ebc06e16
+#define DMUB_FW_VERSION_GIT_HASH 0x3f002dea8
 #define DMUB_FW_VERSION_MAJOR 0
 #define DMUB_FW_VERSION_MINOR 0
-#define DMUB_FW_VERSION_REVISION 81
+#define DMUB_FW_VERSION_REVISION 82
 #define DMUB_FW_VERSION_TEST 0
 #define DMUB_FW_VERSION_VBIOS 0
 #define DMUB_FW_VERSION_HOTFIX 0
-- 
2.25.1

[PATCH 26/33] drm/amd/display: Correct degamma coefficients

[Mikita Lipski]

From: Jaehyun Chung <jaehyun.chung@amd.com>

[Why]
Some incorrect coefficients were being used

Reviewed-by: Michael Strauss <michael.strauss@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Jaehyun Chung <jaehyun.chung@amd.com>
---
 drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index 275f11f8bea3..2465c88e2879 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -61,7 +61,7 @@ static const int32_t regamma_numerator03[] = { 55,      99,     0,  0,  0};
 static const int32_t regamma_numerator04[] = { 55,      99,     0,  0,  0};
 static const int32_t regamma_numerator05[] = { 2400,    2200,   2200, 2400, 2600};
 
-static const int32_t degamma_numerator01[] = { 40450,   810000, 0,  0,  0};
+static const int32_t degamma_numerator01[] = { 404500,  180000, 0,  0,  0};
 static const int32_t degamma_numerator02[] = { 12920,   4500,   0,  0,  0};
 static const int32_t degamma_numerator03[] = { 55,      99,     0,  0,  0};
 static const int32_t degamma_numerator04[] = { 55,      99,     0,  0,  0};
-- 
2.25.1

[PATCH 27/33] drm/amd/display: 3.2.152

[Mikita Lipski]

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

* Correct degamma coefficients
* Optimize bandwidth on following fast update
* Fix multiple memory leaks reported by coverity
* Get backlight from PWM if DMCU is not initialized

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@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 134faa7a1937..442605354430 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -45,7 +45,7 @@
 /* forward declaration */
 struct aux_payload;
 
-#define DC_VER "3.2.151"
+#define DC_VER "3.2.152"
 
 #define MAX_SURFACES 3
 #define MAX_PLANES 6
-- 
2.25.1

[PATCH 28/33] drm/amd/display: Fix unstable HPCP compliance on Chrome Barcelo

[Mikita Lipski]

From: Qingqing Zhuo <qingqing.zhuo@amd.com>

[Why]
Intermittently, there presents two occurrences of 0 stream
commits in a single HPD event. Current HDCP sequence does
not consider such scenerio, and will thus disable HDCP.

[How]
Add condition check to include stream remove and re-enable
case for HDCP enable.

Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

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 87499ef5282c..0753bbb3bfc3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8363,8 +8363,26 @@ static bool is_content_protection_different(struct drm_connector_state *state,
 	    state->content_protection == DRM_MODE_CONTENT_PROTECTION_ENABLED)
 		state->content_protection = DRM_MODE_CONTENT_PROTECTION_DESIRED;
 
-	/* Check if something is connected/enabled, otherwise we start hdcp but nothing is connected/enabled
-	 * hot-plug, headless s3, dpms
+	/* Stream removed and re-enabled
+	 *
+	 * Can sometimes overlap with the HPD case,
+	 * thus set update_hdcp to false to avoid
+	 * setting HDCP multiple times.
+	 *
+	 * Handles:	DESIRED -> DESIRED (Special case)
+	 */
+	if (!(old_state->crtc && old_state->crtc->enabled) &&
+		state->crtc && state->crtc->enabled &&
+		connector->state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED) {
+		dm_con_state->update_hdcp = false;
+		return true;
+	}
+
+	/* Hot-plug, headless s3, dpms
+	 *
+	 * Only start HDCP if the display is connected/enabled.
+	 * update_hdcp flag will be set to false until the next
+	 * HPD comes in.
 	 *
 	 * Handles:	DESIRED -> DESIRED (Special case)
 	 */
-- 
2.25.1

[PATCH 29/33] drm/amd/display: Link training retry fix for abort case

[Mikita Lipski]

From: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>

[Why]
If link training is aborted, it shall be retried if sink is present.

[How]
Check hpd status to find out whether sink is present or not. If sink is
present, then link training shall be tried again with same settings.
Otherwise, link training shall be aborted.

Reviewed-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

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 6fc0e12a715a..ac4896ff912c 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
@@ -2434,9 +2434,13 @@ bool perform_link_training_with_retries(
 		dp_disable_link_phy(link, signal);
 
 		/* Abort link training if failure due to sink being unplugged. */
-		if (status == LINK_TRAINING_ABORT)
-			break;
-		else if (do_fallback) {
+		if (status == LINK_TRAINING_ABORT) {
+			enum dc_connection_type type = dc_connection_none;
+
+			dc_link_detect_sink(link, &type);
+			if (type == dc_connection_none)
+				break;
+		} else if (do_fallback) {
 			decide_fallback_link_setting(*link_setting, &current_setting, status);
 			/* Fail link training if reduced link bandwidth no longer meets
 			 * stream requirements.
-- 
2.25.1

[PATCH 30/33] drm/amd/display: Revert adding degamma coefficients

[Mikita Lipski]

From: Jaehyun Chung <jaehyun.chung@amd.com>

[Why]
Degamma coefficients are calculated in our degamma formula using
the regamma coefficients. We do not need to add separate degamma
coefficients.

[How]
Remove the change to add separate degamma coefficients.

Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Jaehyun Chung <jaehyun.chung@amd.com>
---
 .../amd/display/modules/color/color_gamma.c   | 64 ++++++++-----------
 1 file changed, 25 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index 2465c88e2879..64a38f08f497 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -54,18 +54,17 @@ static struct hw_x_point coordinates_x[MAX_HW_POINTS + 2];
  * just multiply with 2^gamma which can be computed once, and save the result so we
  * recursively compute all the values.
  */
-											 /*sRGB     709     2.2 2.4 P3*/
-static const int32_t regamma_numerator01[] = { 31308,   180000, 0,  0,  0};
-static const int32_t regamma_numerator02[] = { 12920,   4500,   0,  0,  0};
-static const int32_t regamma_numerator03[] = { 55,      99,     0,  0,  0};
-static const int32_t regamma_numerator04[] = { 55,      99,     0,  0,  0};
-static const int32_t regamma_numerator05[] = { 2400,    2200,   2200, 2400, 2600};
-
-static const int32_t degamma_numerator01[] = { 404500,  180000, 0,  0,  0};
-static const int32_t degamma_numerator02[] = { 12920,   4500,   0,  0,  0};
-static const int32_t degamma_numerator03[] = { 55,      99,     0,  0,  0};
-static const int32_t degamma_numerator04[] = { 55,      99,     0,  0,  0};
-static const int32_t degamma_numerator05[] = { 2400,    2200,   2200, 2400, 2600};
+
+/*
+ * Regamma coefficients are used for both regamma and degamma. Degamma
+ * coefficients are calculated in our formula using the regamma coefficients.
+ */
+									 /*sRGB     709     2.2 2.4 P3*/
+static const int32_t numerator01[] = { 31308,   180000, 0,  0,  0};
+static const int32_t numerator02[] = { 12920,   4500,   0,  0,  0};
+static const int32_t numerator03[] = { 55,      99,     0,  0,  0};
+static const int32_t numerator04[] = { 55,      99,     0,  0,  0};
+static const int32_t numerator05[] = { 2400,    2200,   2200, 2400, 2600};
 
 /* one-time setup of X points */
 void setup_x_points_distribution(void)
@@ -295,7 +294,7 @@ struct dividers {
 
 
 static bool build_coefficients(struct gamma_coefficients *coefficients,
-		enum dc_transfer_func_predefined type, bool isRegamma)
+		enum dc_transfer_func_predefined type)
 {
 
 	uint32_t i = 0;
@@ -318,29 +317,16 @@ static bool build_coefficients(struct gamma_coefficients *coefficients,
 	}
 
 	do {
-		if (isRegamma) {
-			coefficients->a0[i] = dc_fixpt_from_fraction(
-				regamma_numerator01[index], 10000000);
-			coefficients->a1[i] = dc_fixpt_from_fraction(
-				regamma_numerator02[index], 1000);
-			coefficients->a2[i] = dc_fixpt_from_fraction(
-				regamma_numerator03[index], 1000);
-			coefficients->a3[i] = dc_fixpt_from_fraction(
-				regamma_numerator04[index], 1000);
-			coefficients->user_gamma[i] = dc_fixpt_from_fraction(
-				regamma_numerator05[index], 1000);
-		} else {
-			coefficients->a0[i] = dc_fixpt_from_fraction(
-				degamma_numerator01[index], 10000000);
-			coefficients->a1[i] = dc_fixpt_from_fraction(
-				degamma_numerator02[index], 1000);
-			coefficients->a2[i] = dc_fixpt_from_fraction(
-				degamma_numerator03[index], 1000);
-			coefficients->a3[i] = dc_fixpt_from_fraction(
-				degamma_numerator04[index], 1000);
-			coefficients->user_gamma[i] = dc_fixpt_from_fraction(
-				degamma_numerator05[index], 1000);
-		}
+		coefficients->a0[i] = dc_fixpt_from_fraction(
+			numerator01[index], 10000000);
+		coefficients->a1[i] = dc_fixpt_from_fraction(
+			numerator02[index], 1000);
+		coefficients->a2[i] = dc_fixpt_from_fraction(
+			numerator03[index], 1000);
+		coefficients->a3[i] = dc_fixpt_from_fraction(
+			numerator04[index], 1000);
+		coefficients->user_gamma[i] = dc_fixpt_from_fraction(
+			numerator05[index], 1000);
 
 		++i;
 	} while (i != ARRAY_SIZE(coefficients->a0));
@@ -853,7 +839,7 @@ static bool build_regamma(struct pwl_float_data_ex *rgb_regamma,
 	if (!coeff)
 		goto release;
 
-	if (!build_coefficients(coeff, type, true))
+	if (!build_coefficients(coeff, type))
 		goto release;
 
 	memset(cal_buffer->buffer, 0, NUM_PTS_IN_REGION * sizeof(struct fixed31_32));
@@ -1102,7 +1088,7 @@ static bool build_degamma(struct pwl_float_data_ex *curve,
 	uint32_t begin_index, end_index;
 	bool ret = false;
 
-	if (!build_coefficients(&coeff, type, false))
+	if (!build_coefficients(&coeff, type))
 		goto release;
 
 	i = 0;
@@ -1705,7 +1691,7 @@ static void apply_degamma_for_user_regamma(struct pwl_float_data_ex *rgb_regamma
 	struct pwl_float_data_ex *rgb = rgb_regamma;
 	const struct hw_x_point *coord_x = coordinates_x;
 
-	build_coefficients(&coeff, TRANSFER_FUNCTION_SRGB, true);
+	build_coefficients(&coeff, true);
 
 	i = 0;
 	while (i != hw_points_num + 1) {
-- 
2.25.1

[PATCH 31/33] drm/amd/display: Add VPG and AFMT low power support for DCN3.1

[Mikita Lipski]

From: Michael Strauss <michael.strauss@amd.com>

[WHY]
Power down VPG and AFMT blocks when not in use

[HOW]
Create afmt31 and vpg31 structs and add necessary fields to reg list

Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c      |  10 ++
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |  17 ++
 drivers/gpu/drm/amd/display/dc/dc.h           |   2 +
 .../display/dc/dcn10/dcn10_stream_encoder.c   |  10 ++
 .../gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c |  24 ++-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h |  24 +++
 .../dc/dcn30/dcn30_dio_stream_encoder.c       |   2 +
 .../gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c  |   2 +-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h  |  11 ++
 drivers/gpu/drm/amd/display/dc/dcn31/Makefile |   3 +-
 .../gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c |  92 ++++++++++
 .../gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h | 126 ++++++++++++++
 .../drm/amd/display/dc/dcn31/dcn31_resource.c |  50 +++---
 .../gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c  |  87 ++++++++++
 .../gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h  | 162 ++++++++++++++++++
 15 files changed, 593 insertions(+), 29 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 8bebfb0ca206..e66ca19e2f73 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -71,6 +71,8 @@
 
 #include "dmub/dmub_srv.h"
 
+#include "dcn30/dcn30_vpg.h"
+
 #include "i2caux_interface.h"
 #include "dce/dmub_hw_lock_mgr.h"
 
@@ -2555,6 +2557,9 @@ static void commit_planes_do_stream_update(struct dc *dc,
 		enum surface_update_type update_type,
 		struct dc_state *context)
 {
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct vpg *vpg;
+#endif
 	int j;
 
 	// Stream updates
@@ -2575,6 +2580,11 @@ static void commit_planes_do_stream_update(struct dc *dc,
 					stream_update->vrr_infopacket ||
 					stream_update->vsc_infopacket ||
 					stream_update->vsp_infopacket) {
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+				vpg = pipe_ctx->stream_res.stream_enc->vpg;
+				if (vpg && vpg->funcs->vpg_poweron)
+					vpg->funcs->vpg_poweron(vpg);
+#endif
 				resource_build_info_frame(pipe_ctx);
 				dc->hwss.update_info_frame(pipe_ctx);
 			}
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 a87a71b815ad..746b31ba2708 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -51,6 +51,8 @@
 #include "inc/link_enc_cfg.h"
 #include "inc/link_dpcd.h"
 
+#include "dc/dcn30/dcn30_vpg.h"
+
 #define DC_LOGGER_INIT(logger)
 
 #define LINK_INFO(...) \
@@ -3653,6 +3655,7 @@ void core_link_enable_stream(
 	struct link_encoder *link_enc;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	enum otg_out_mux_dest otg_out_dest = OUT_MUX_DIO;
+	struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
 #endif
 	DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
 
@@ -3744,6 +3747,12 @@ void core_link_enable_stream(
 
 		pipe_ctx->stream->apply_edp_fast_boot_optimization = false;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+		// Enable VPG before building infoframe
+		if (vpg && vpg->funcs->vpg_poweron)
+			vpg->funcs->vpg_poweron(vpg);
+#endif
+
 		resource_build_info_frame(pipe_ctx);
 		dc->hwss.update_info_frame(pipe_ctx);
 
@@ -3890,6 +3899,9 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 	struct dc  *dc = pipe_ctx->stream->ctx->dc;
 	struct dc_stream_state *stream = pipe_ctx->stream;
 	struct dc_link *link = stream->sink->link;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
+#endif
 
 	if (!IS_DIAG_DC(dc->ctx->dce_environment) &&
 			dc_is_virtual_signal(pipe_ctx->stream->signal))
@@ -3973,6 +3985,11 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 			pipe_ctx->stream_res.tg->funcs->set_out_mux(pipe_ctx->stream_res.tg, OUT_MUX_DIO);
 	}
 #endif
+
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (vpg && vpg->funcs->vpg_powerdown)
+		vpg->funcs->vpg_powerdown(vpg);
+#endif
 }
 
 void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 442605354430..15b67239266e 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -471,6 +471,8 @@ union mem_low_power_enable_options {
 		bool cm: 1;
 		bool mpc: 1;
 		bool optc: 1;
+		bool vpg: 1;
+		bool afmt: 1;
 	} bits;
 	uint32_t u32All;
 };
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 b7d55212dc8f..a97bdaa54f73 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
@@ -31,6 +31,7 @@
 #include "hw_shared.h"
 #include "inc/link_dpcd.h"
 #include "dpcd_defs.h"
+#include "dcn30/dcn30_afmt.h"
 
 #define DC_LOGGER \
 		enc1->base.ctx->logger
@@ -1401,6 +1402,11 @@ static void enc1_se_disable_dp_audio(
 	struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
 	uint32_t value = 0;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (enc->afmt && enc->afmt->funcs->afmt_powerdown)
+		enc->afmt->funcs->afmt_powerdown(enc->afmt);
+#endif
+
 	/* Disable Audio packets */
 	REG_UPDATE_5(DP_SEC_CNTL,
 			DP_SEC_ASP_ENABLE, 0,
@@ -1464,6 +1470,10 @@ void enc1_se_hdmi_audio_setup(
 void enc1_se_hdmi_audio_disable(
 	struct stream_encoder *enc)
 {
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (enc->afmt && enc->afmt->funcs->afmt_powerdown)
+		enc->afmt->funcs->afmt_powerdown(enc->afmt);
+#endif
 	enc1_se_enable_audio_clock(enc, false);
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c
index fa981cd04dd0..95528e5ef89e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c
@@ -44,11 +44,14 @@
 	afmt3->base.ctx
 
 
-static void afmt3_setup_hdmi_audio(
+void afmt3_setup_hdmi_audio(
 	struct afmt *afmt)
 {
 	struct dcn30_afmt *afmt3 = DCN30_AFMT_FROM_AFMT(afmt);
 
+	if (afmt->funcs->afmt_poweron)
+		afmt->funcs->afmt_poweron(afmt);
+
 	/* AFMT_AUDIO_PACKET_CONTROL */
 	REG_UPDATE(AFMT_AUDIO_PACKET_CONTROL, AFMT_60958_CS_UPDATE, 1);
 
@@ -113,7 +116,7 @@ static union audio_cea_channels speakers_to_channels(
 	return cea_channels;
 }
 
-static void afmt3_se_audio_setup(
+void afmt3_se_audio_setup(
 	struct afmt *afmt,
 	unsigned int az_inst,
 	struct audio_info *audio_info)
@@ -138,20 +141,24 @@ static void afmt3_se_audio_setup(
 	REG_UPDATE(AFMT_AUDIO_PACKET_CONTROL2, AFMT_AUDIO_CHANNEL_ENABLE, channels);
 
 	/* Disable forced mem power off */
-	REG_UPDATE(AFMT_MEM_PWR, AFMT_MEM_PWR_FORCE, 0);
+	if (afmt->funcs->afmt_poweron == NULL)
+		REG_UPDATE(AFMT_MEM_PWR, AFMT_MEM_PWR_FORCE, 0);
 }
 
-static void afmt3_audio_mute_control(
+void afmt3_audio_mute_control(
 	struct afmt *afmt,
 	bool mute)
 {
 	struct dcn30_afmt *afmt3 = DCN30_AFMT_FROM_AFMT(afmt);
-
+	if (mute && afmt->funcs->afmt_powerdown)
+		afmt->funcs->afmt_powerdown(afmt);
+	if (!mute && afmt->funcs->afmt_poweron)
+		afmt->funcs->afmt_poweron(afmt);
 	/* enable/disable transmission of audio packets */
 	REG_UPDATE(AFMT_AUDIO_PACKET_CONTROL, AFMT_AUDIO_SAMPLE_SEND, !mute);
 }
 
-static void afmt3_audio_info_immediate_update(
+void afmt3_audio_info_immediate_update(
 	struct afmt *afmt)
 {
 	struct dcn30_afmt *afmt3 = DCN30_AFMT_FROM_AFMT(afmt);
@@ -160,11 +167,14 @@ static void afmt3_audio_info_immediate_update(
 	REG_UPDATE(AFMT_INFOFRAME_CONTROL0, AFMT_AUDIO_INFO_UPDATE, 1);
 }
 
-static void afmt3_setup_dp_audio(
+void afmt3_setup_dp_audio(
 		struct afmt *afmt)
 {
 	struct dcn30_afmt *afmt3 = DCN30_AFMT_FROM_AFMT(afmt);
 
+	if (afmt->funcs->afmt_poweron)
+		afmt->funcs->afmt_poweron(afmt);
+
 	/* AFMT_AUDIO_PACKET_CONTROL */
 	REG_UPDATE(AFMT_AUDIO_PACKET_CONTROL, AFMT_60958_CS_UPDATE, 1);
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h
index 85d4619207e2..97e0cf62f98e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h
@@ -121,6 +121,12 @@ struct afmt_funcs {
 
 	void (*setup_dp_audio)(
 		struct afmt *afmt);
+
+	void (*afmt_poweron)(
+		struct afmt *afmt);
+
+	void (*afmt_powerdown)(
+		struct afmt *afmt);
 };
 
 struct afmt {
@@ -136,6 +142,24 @@ struct dcn30_afmt {
 	const struct dcn30_afmt_mask *afmt_mask;
 };
 
+void afmt3_setup_hdmi_audio(
+	struct afmt *afmt);
+
+void afmt3_se_audio_setup(
+	struct afmt *afmt,
+	unsigned int az_inst,
+	struct audio_info *audio_info);
+
+void afmt3_audio_mute_control(
+	struct afmt *afmt,
+	bool mute);
+
+void afmt3_audio_info_immediate_update(
+	struct afmt *afmt);
+
+void afmt3_setup_dp_audio(
+		struct afmt *afmt);
+
 void afmt3_construct(struct dcn30_afmt *afmt3,
 	struct dc_context *ctx,
 	uint32_t inst,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c
index 8487516819ef..b73dfd2661b9 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c
@@ -704,6 +704,8 @@ static void enc3_se_setup_dp_audio(
 static void enc3_se_dp_audio_enable(
 	struct stream_encoder *enc)
 {
+	if (enc->afmt->funcs->afmt_poweron)
+		enc->afmt->funcs->afmt_poweron(enc->afmt);
 	enc1_se_enable_audio_clock(enc, true);
 	enc3_se_setup_dp_audio(enc);
 	enc1_se_enable_dp_audio(enc);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c
index 8cfd181b4d5f..9748aaa044f7 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c
@@ -43,7 +43,7 @@
 	vpg3->base.ctx
 
 
-static void vpg3_update_generic_info_packet(
+void vpg3_update_generic_info_packet(
 	struct vpg *vpg,
 	uint32_t packet_index,
 	const struct dc_info_packet *info_packet)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h
index 6161e9e66355..96dccb2f1124 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h
@@ -139,6 +139,12 @@ struct vpg_funcs {
 		struct vpg *vpg,
 		uint32_t packet_index,
 		const struct dc_info_packet *info_packet);
+
+	void (*vpg_poweron)(
+		struct vpg *vpg);
+
+	void (*vpg_powerdown)(
+		struct vpg *vpg);
 };
 
 struct vpg {
@@ -154,6 +160,11 @@ struct dcn30_vpg {
 	const struct dcn30_vpg_mask *vpg_mask;
 };
 
+void vpg3_update_generic_info_packet(
+	struct vpg *vpg,
+	uint32_t packet_index,
+	const struct dc_info_packet *info_packet);
+
 void vpg3_construct(struct dcn30_vpg *vpg3,
 	struct dc_context *ctx,
 	uint32_t inst,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/Makefile b/drivers/gpu/drm/amd/display/dc/dcn31/Makefile
index 5197825e7965..d20e3b8ccc30 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/Makefile
@@ -12,7 +12,8 @@
 
 DCN31 = dcn31_resource.o dcn31_hubbub.o dcn31_hwseq.o dcn31_init.o dcn31_hubp.o \
 	dcn31_dccg.o dcn31_optc.o dcn31_dio_link_encoder.o dcn31_panel_cntl.o \
-	dcn31_apg.o dcn31_hpo_dp_stream_encoder.o dcn31_hpo_dp_link_encoder.o
+	dcn31_apg.o dcn31_hpo_dp_stream_encoder.o dcn31_hpo_dp_link_encoder.o \
+	dcn31_afmt.o dcn31_vpg.o
 
 ifdef CONFIG_X86
 CFLAGS_$(AMDDALPATH)/dc/dcn31/dcn31_resource.o := -msse
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
new file mode 100644
index 000000000000..d380a8ec2184
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2019 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
+ *
+ */
+
+#include "dc_bios_types.h"
+#include "hw_shared.h"
+#include "dcn30/dcn30_afmt.h"
+#include "dcn31_afmt.h"
+#include "reg_helper.h"
+#include "dc/dc.h"
+
+#define DC_LOGGER \
+		afmt31->base.ctx->logger
+
+#define REG(reg)\
+	(afmt31->regs->reg)
+
+#undef FN
+#define FN(reg_name, field_name) \
+	afmt31->afmt_shift->field_name, afmt31->afmt_mask->field_name
+
+
+#define CTX \
+	afmt31->base.ctx
+
+static struct afmt_funcs dcn31_afmt_funcs = {
+	.setup_hdmi_audio		= afmt3_setup_hdmi_audio,
+	.se_audio_setup			= afmt3_se_audio_setup,
+	.audio_mute_control		= afmt3_audio_mute_control,
+	.audio_info_immediate_update	= afmt3_audio_info_immediate_update,
+	.setup_dp_audio			= afmt3_setup_dp_audio,
+	.afmt_powerdown			= afmt31_powerdown,
+	.afmt_poweron			= afmt31_poweron
+};
+
+void afmt31_powerdown(struct afmt *afmt)
+{
+	struct dcn31_afmt *afmt31 = DCN31_AFMT_FROM_AFMT(afmt);
+
+	if (afmt->ctx->dc->debug.enable_mem_low_power.bits.afmt == false)
+		return;
+
+	REG_UPDATE_2(AFMT_MEM_PWR, AFMT_MEM_PWR_DIS, 0, AFMT_MEM_PWR_FORCE, 1);
+}
+
+void afmt31_poweron(struct afmt *afmt)
+{
+	struct dcn31_afmt *afmt31 = DCN31_AFMT_FROM_AFMT(afmt);
+
+	if (afmt->ctx->dc->debug.enable_mem_low_power.bits.afmt == false)
+		return;
+
+	REG_UPDATE_2(AFMT_MEM_PWR, AFMT_MEM_PWR_DIS, 1, AFMT_MEM_PWR_FORCE, 0);
+}
+
+void afmt31_construct(struct dcn31_afmt *afmt31,
+	struct dc_context *ctx,
+	uint32_t inst,
+	const struct dcn31_afmt_registers *afmt_regs,
+	const struct dcn31_afmt_shift *afmt_shift,
+	const struct dcn31_afmt_mask *afmt_mask)
+{
+	afmt31->base.ctx = ctx;
+
+	afmt31->base.inst = inst;
+	afmt31->base.funcs = &dcn31_afmt_funcs;
+
+	afmt31->regs = afmt_regs;
+	afmt31->afmt_shift = afmt_shift;
+	afmt31->afmt_mask = afmt_mask;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h
new file mode 100644
index 000000000000..802cb05b6ab9
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2019 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_DCN31_AFMT_H__
+#define __DAL_DCN31_AFMT_H__
+
+
+#define DCN31_AFMT_FROM_AFMT(afmt)\
+	container_of(afmt, struct dcn31_afmt, base)
+
+#define AFMT_DCN31_REG_LIST(id) \
+	SRI(AFMT_INFOFRAME_CONTROL0, AFMT, id), \
+	SRI(AFMT_VBI_PACKET_CONTROL, AFMT, id), \
+	SRI(AFMT_AUDIO_PACKET_CONTROL, AFMT, id), \
+	SRI(AFMT_AUDIO_PACKET_CONTROL2, AFMT, id), \
+	SRI(AFMT_AUDIO_SRC_CONTROL, AFMT, id), \
+	SRI(AFMT_60958_0, AFMT, id), \
+	SRI(AFMT_60958_1, AFMT, id), \
+	SRI(AFMT_60958_2, AFMT, id), \
+	SRI(AFMT_MEM_PWR, AFMT, id)
+
+struct dcn31_afmt_registers {
+	uint32_t AFMT_INFOFRAME_CONTROL0;
+	uint32_t AFMT_VBI_PACKET_CONTROL;
+	uint32_t AFMT_AUDIO_PACKET_CONTROL;
+	uint32_t AFMT_AUDIO_PACKET_CONTROL2;
+	uint32_t AFMT_AUDIO_SRC_CONTROL;
+	uint32_t AFMT_60958_0;
+	uint32_t AFMT_60958_1;
+	uint32_t AFMT_60958_2;
+	uint32_t AFMT_MEM_PWR;
+};
+
+#define DCN31_AFMT_MASK_SH_LIST(mask_sh)\
+	SE_SF(AFMT0_AFMT_INFOFRAME_CONTROL0, AFMT_AUDIO_INFO_UPDATE, mask_sh),\
+	SE_SF(AFMT0_AFMT_AUDIO_SRC_CONTROL, AFMT_AUDIO_SRC_SELECT, mask_sh),\
+	SE_SF(AFMT0_AFMT_AUDIO_PACKET_CONTROL2, AFMT_AUDIO_CHANNEL_ENABLE, mask_sh),\
+	SE_SF(AFMT0_AFMT_AUDIO_PACKET_CONTROL, AFMT_60958_CS_UPDATE, mask_sh),\
+	SE_SF(AFMT0_AFMT_AUDIO_PACKET_CONTROL2, AFMT_AUDIO_LAYOUT_OVRD, mask_sh),\
+	SE_SF(AFMT0_AFMT_AUDIO_PACKET_CONTROL2, AFMT_60958_OSF_OVRD, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_0, AFMT_60958_CS_CHANNEL_NUMBER_L, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_0, AFMT_60958_CS_CLOCK_ACCURACY, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_1, AFMT_60958_CS_CHANNEL_NUMBER_R, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_2, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_3, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_4, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_5, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_6, mask_sh),\
+	SE_SF(AFMT0_AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_7, mask_sh),\
+	SE_SF(AFMT0_AFMT_AUDIO_PACKET_CONTROL, AFMT_AUDIO_SAMPLE_SEND, mask_sh),\
+	SE_SF(AFMT0_AFMT_MEM_PWR, AFMT_MEM_PWR_FORCE, mask_sh),\
+	SE_SF(AFMT0_AFMT_MEM_PWR, AFMT_MEM_PWR_DIS, mask_sh),\
+	SE_SF(AFMT0_AFMT_MEM_PWR, AFMT_MEM_PWR_STATE, mask_sh)
+
+#define AFMT_DCN31_REG_FIELD_LIST(type) \
+		type AFMT_AUDIO_INFO_UPDATE;\
+		type AFMT_AUDIO_SRC_SELECT;\
+		type AFMT_AUDIO_CHANNEL_ENABLE;\
+		type AFMT_60958_CS_UPDATE;\
+		type AFMT_AUDIO_LAYOUT_OVRD;\
+		type AFMT_60958_OSF_OVRD;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_L;\
+		type AFMT_60958_CS_CLOCK_ACCURACY;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_R;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_2;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_3;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_4;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_5;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_6;\
+		type AFMT_60958_CS_CHANNEL_NUMBER_7;\
+		type AFMT_AUDIO_SAMPLE_SEND;\
+		type AFMT_MEM_PWR_FORCE;\
+		type AFMT_MEM_PWR_DIS;\
+		type AFMT_MEM_PWR_STATE
+
+struct dcn31_afmt_shift {
+	AFMT_DCN31_REG_FIELD_LIST(uint8_t);
+};
+
+struct dcn31_afmt_mask {
+	AFMT_DCN31_REG_FIELD_LIST(uint32_t);
+};
+
+struct dcn31_afmt {
+	struct afmt base;
+	const struct dcn31_afmt_registers *regs;
+	const struct dcn31_afmt_shift *afmt_shift;
+	const struct dcn31_afmt_mask *afmt_mask;
+};
+
+void afmt31_poweron(
+		struct afmt *afmt);
+
+void afmt31_powerdown(
+		struct afmt *afmt);
+
+void afmt31_construct(struct dcn31_afmt *afmt31,
+	struct dc_context *ctx,
+	uint32_t inst,
+	const struct dcn31_afmt_registers *afmt_regs,
+	const struct dcn31_afmt_shift *afmt_shift,
+	const struct dcn31_afmt_mask *afmt_mask);
+
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index e0b93665bf55..cf6392eadaf2 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -56,6 +56,8 @@
 #include "dcn31/dcn31_hpo_dp_link_encoder.h"
 #include "dcn31/dcn31_apg.h"
 #include "dcn31/dcn31_dio_link_encoder.h"
+#include "dcn31/dcn31_vpg.h"
+#include "dcn31/dcn31_afmt.h"
 #include "dce/dce_clock_source.h"
 #include "dce/dce_audio.h"
 #include "dce/dce_hwseq.h"
@@ -414,10 +416,10 @@ static const struct dce_audio_mask audio_mask = {
 
 #define vpg_regs(id)\
 [id] = {\
-	VPG_DCN3_REG_LIST(id)\
+	VPG_DCN31_REG_LIST(id)\
 }
 
-static const struct dcn30_vpg_registers vpg_regs[] = {
+static const struct dcn31_vpg_registers vpg_regs[] = {
 	vpg_regs(0),
 	vpg_regs(1),
 	vpg_regs(2),
@@ -430,20 +432,20 @@ static const struct dcn30_vpg_registers vpg_regs[] = {
 	vpg_regs(9),
 };
 
-static const struct dcn30_vpg_shift vpg_shift = {
-	DCN3_VPG_MASK_SH_LIST(__SHIFT)
+static const struct dcn31_vpg_shift vpg_shift = {
+	DCN31_VPG_MASK_SH_LIST(__SHIFT)
 };
 
-static const struct dcn30_vpg_mask vpg_mask = {
-	DCN3_VPG_MASK_SH_LIST(_MASK)
+static const struct dcn31_vpg_mask vpg_mask = {
+	DCN31_VPG_MASK_SH_LIST(_MASK)
 };
 
 #define afmt_regs(id)\
 [id] = {\
-	AFMT_DCN3_REG_LIST(id)\
+	AFMT_DCN31_REG_LIST(id)\
 }
 
-static const struct dcn30_afmt_registers afmt_regs[] = {
+static const struct dcn31_afmt_registers afmt_regs[] = {
 	afmt_regs(0),
 	afmt_regs(1),
 	afmt_regs(2),
@@ -452,12 +454,12 @@ static const struct dcn30_afmt_registers afmt_regs[] = {
 	afmt_regs(5)
 };
 
-static const struct dcn30_afmt_shift afmt_shift = {
-	DCN3_AFMT_MASK_SH_LIST(__SHIFT)
+static const struct dcn31_afmt_shift afmt_shift = {
+	DCN31_AFMT_MASK_SH_LIST(__SHIFT)
 };
 
-static const struct dcn30_afmt_mask afmt_mask = {
-	DCN3_AFMT_MASK_SH_LIST(_MASK)
+static const struct dcn31_afmt_mask afmt_mask = {
+	DCN31_AFMT_MASK_SH_LIST(_MASK)
 };
 
 #define apg_regs(id)\
@@ -1014,6 +1016,8 @@ static const struct dc_debug_options debug_defaults_drv = {
 			.cm = false,
 			.mpc = false,
 			.optc = false,
+			.vpg = false,
+			.afmt = false,
 		}
 	},
 	.optimize_edp_link_rate = true,
@@ -1298,34 +1302,40 @@ static struct vpg *dcn31_vpg_create(
 	struct dc_context *ctx,
 	uint32_t inst)
 {
-	struct dcn30_vpg *vpg3 = kzalloc(sizeof(struct dcn30_vpg), GFP_KERNEL);
+	struct dcn31_vpg *vpg31 = kzalloc(sizeof(struct dcn31_vpg), GFP_KERNEL);
 
-	if (!vpg3)
+	if (!vpg31)
 		return NULL;
 
-	vpg3_construct(vpg3, ctx, inst,
+	vpg31_construct(vpg31, ctx, inst,
 			&vpg_regs[inst],
 			&vpg_shift,
 			&vpg_mask);
 
-	return &vpg3->base;
+	// Will re-enable hw block when we enable stream
+	// Check for enabled stream before powering down?
+	vpg31_powerdown(&vpg31->base);
+
+	return &vpg31->base;
 }
 
 static struct afmt *dcn31_afmt_create(
 	struct dc_context *ctx,
 	uint32_t inst)
 {
-	struct dcn30_afmt *afmt3 = kzalloc(sizeof(struct dcn30_afmt), GFP_KERNEL);
+	struct dcn31_afmt *afmt31 = kzalloc(sizeof(struct dcn31_afmt), GFP_KERNEL);
 
-	if (!afmt3)
+	if (!afmt31)
 		return NULL;
 
-	afmt3_construct(afmt3, ctx, inst,
+	afmt31_construct(afmt31, ctx, inst,
 			&afmt_regs[inst],
 			&afmt_shift,
 			&afmt_mask);
 
-	return &afmt3->base;
+	// Light sleep by default, no need to power down here
+
+	return &afmt31->base;
 }
 
 static struct apg *dcn31_apg_create(
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c
new file mode 100644
index 000000000000..f1deb1c3c363
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2019 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
+ *
+ */
+
+#include "dc_bios_types.h"
+#include "dcn30/dcn30_vpg.h"
+#include "dcn31_vpg.h"
+#include "reg_helper.h"
+#include "dc/dc.h"
+
+#define DC_LOGGER \
+		vpg31->base.ctx->logger
+
+#define REG(reg)\
+	(vpg31->regs->reg)
+
+#undef FN
+#define FN(reg_name, field_name) \
+	vpg31->vpg_shift->field_name, vpg31->vpg_mask->field_name
+
+
+#define CTX \
+	vpg31->base.ctx
+
+static struct vpg_funcs dcn31_vpg_funcs = {
+	.update_generic_info_packet	= vpg3_update_generic_info_packet,
+	.vpg_poweron = vpg31_poweron,
+	.vpg_powerdown = vpg31_powerdown,
+};
+
+void vpg31_powerdown(struct vpg *vpg)
+{
+	struct dcn31_vpg *vpg31 = DCN31_VPG_FROM_VPG(vpg);
+
+	if (vpg->ctx->dc->debug.enable_mem_low_power.bits.vpg == false)
+		return;
+
+	REG_UPDATE_2(VPG_MEM_PWR, VPG_GSP_MEM_LIGHT_SLEEP_DIS, 0, VPG_GSP_LIGHT_SLEEP_FORCE, 1);
+}
+
+void vpg31_poweron(struct vpg *vpg)
+{
+	struct dcn31_vpg *vpg31 = DCN31_VPG_FROM_VPG(vpg);
+
+	if (vpg->ctx->dc->debug.enable_mem_low_power.bits.vpg == false)
+		return;
+
+	REG_UPDATE_2(VPG_MEM_PWR, VPG_GSP_MEM_LIGHT_SLEEP_DIS, 1, VPG_GSP_LIGHT_SLEEP_FORCE, 0);
+}
+
+void vpg31_construct(struct dcn31_vpg *vpg31,
+	struct dc_context *ctx,
+	uint32_t inst,
+	const struct dcn31_vpg_registers *vpg_regs,
+	const struct dcn31_vpg_shift *vpg_shift,
+	const struct dcn31_vpg_mask *vpg_mask)
+{
+	vpg31->base.ctx = ctx;
+
+	vpg31->base.inst = inst;
+	vpg31->base.funcs = &dcn31_vpg_funcs;
+
+	vpg31->regs = vpg_regs;
+	vpg31->vpg_shift = vpg_shift;
+	vpg31->vpg_mask = vpg_mask;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h
new file mode 100644
index 000000000000..0e76eabce441
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2019 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_DCN31_VPG_H__
+#define __DAL_DCN31_VPG_H__
+
+
+#define DCN31_VPG_FROM_VPG(vpg)\
+	container_of(vpg, struct dcn31_vpg, base)
+
+#define VPG_DCN31_REG_LIST(id) \
+	SRI(VPG_GENERIC_STATUS, VPG, id), \
+	SRI(VPG_GENERIC_PACKET_ACCESS_CTRL, VPG, id), \
+	SRI(VPG_GENERIC_PACKET_DATA, VPG, id), \
+	SRI(VPG_GSP_FRAME_UPDATE_CTRL, VPG, id), \
+	SRI(VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG, id), \
+	SRI(VPG_MEM_PWR, VPG, id)
+
+struct dcn31_vpg_registers {
+	uint32_t VPG_GENERIC_STATUS;
+	uint32_t VPG_GENERIC_PACKET_ACCESS_CTRL;
+	uint32_t VPG_GENERIC_PACKET_DATA;
+	uint32_t VPG_GSP_FRAME_UPDATE_CTRL;
+	uint32_t VPG_GSP_IMMEDIATE_UPDATE_CTRL;
+	uint32_t VPG_MEM_PWR;
+};
+
+#define DCN31_VPG_MASK_SH_LIST(mask_sh)\
+	SE_SF(VPG0_VPG_GENERIC_STATUS, VPG_GENERIC_CONFLICT_OCCURED, mask_sh),\
+	SE_SF(VPG0_VPG_GENERIC_STATUS, VPG_GENERIC_CONFLICT_CLR, mask_sh),\
+	SE_SF(VPG0_VPG_GENERIC_PACKET_ACCESS_CTRL, VPG_GENERIC_DATA_INDEX, mask_sh),\
+	SE_SF(VPG0_VPG_GENERIC_PACKET_DATA, VPG_GENERIC_DATA_BYTE0, mask_sh),\
+	SE_SF(VPG0_VPG_GENERIC_PACKET_DATA, VPG_GENERIC_DATA_BYTE1, mask_sh),\
+	SE_SF(VPG0_VPG_GENERIC_PACKET_DATA, VPG_GENERIC_DATA_BYTE2, mask_sh),\
+	SE_SF(VPG0_VPG_GENERIC_PACKET_DATA, VPG_GENERIC_DATA_BYTE3, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC0_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC1_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC2_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC3_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC4_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC5_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC6_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC7_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC8_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC9_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC10_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC11_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC12_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC13_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_FRAME_UPDATE_CTRL, VPG_GENERIC14_FRAME_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC0_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC1_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC2_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC3_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC4_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC5_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC6_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC7_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC8_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC9_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC10_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC11_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC12_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC13_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_GSP_IMMEDIATE_UPDATE_CTRL, VPG_GENERIC14_IMMEDIATE_UPDATE, mask_sh),\
+	SE_SF(VPG0_VPG_MEM_PWR, VPG_GSP_MEM_LIGHT_SLEEP_DIS, mask_sh),\
+	SE_SF(VPG0_VPG_MEM_PWR, VPG_GSP_LIGHT_SLEEP_FORCE, mask_sh),\
+	SE_SF(VPG0_VPG_MEM_PWR, VPG_GSP_MEM_PWR_STATE, mask_sh)
+
+#define VPG_DCN31_REG_FIELD_LIST(type) \
+	type VPG_GENERIC_CONFLICT_OCCURED;\
+	type VPG_GENERIC_CONFLICT_CLR;\
+	type VPG_GENERIC_DATA_INDEX;\
+	type VPG_GENERIC_DATA_BYTE0;\
+	type VPG_GENERIC_DATA_BYTE1;\
+	type VPG_GENERIC_DATA_BYTE2;\
+	type VPG_GENERIC_DATA_BYTE3;\
+	type VPG_GENERIC0_FRAME_UPDATE;\
+	type VPG_GENERIC1_FRAME_UPDATE;\
+	type VPG_GENERIC2_FRAME_UPDATE;\
+	type VPG_GENERIC3_FRAME_UPDATE;\
+	type VPG_GENERIC4_FRAME_UPDATE;\
+	type VPG_GENERIC5_FRAME_UPDATE;\
+	type VPG_GENERIC6_FRAME_UPDATE;\
+	type VPG_GENERIC7_FRAME_UPDATE;\
+	type VPG_GENERIC8_FRAME_UPDATE;\
+	type VPG_GENERIC9_FRAME_UPDATE;\
+	type VPG_GENERIC10_FRAME_UPDATE;\
+	type VPG_GENERIC11_FRAME_UPDATE;\
+	type VPG_GENERIC12_FRAME_UPDATE;\
+	type VPG_GENERIC13_FRAME_UPDATE;\
+	type VPG_GENERIC14_FRAME_UPDATE;\
+	type VPG_GENERIC0_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC1_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC2_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC3_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC4_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC5_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC6_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC7_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC8_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC9_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC10_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC11_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC12_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC13_IMMEDIATE_UPDATE;\
+	type VPG_GENERIC14_IMMEDIATE_UPDATE;\
+	type VPG_GSP_MEM_LIGHT_SLEEP_DIS;\
+	type VPG_GSP_LIGHT_SLEEP_FORCE;\
+	type VPG_GSP_MEM_PWR_STATE
+
+struct dcn31_vpg_shift {
+	VPG_DCN31_REG_FIELD_LIST(uint8_t);
+};
+
+struct dcn31_vpg_mask {
+	VPG_DCN31_REG_FIELD_LIST(uint32_t);
+};
+
+struct dcn31_vpg {
+	struct vpg base;
+	const struct dcn31_vpg_registers *regs;
+	const struct dcn31_vpg_shift *vpg_shift;
+	const struct dcn31_vpg_mask *vpg_mask;
+};
+
+void vpg31_poweron(
+		struct vpg *vpg);
+
+void vpg31_powerdown(
+		struct vpg *vpg);
+
+void vpg31_construct(struct dcn31_vpg *vpg31,
+	struct dc_context *ctx,
+	uint32_t inst,
+	const struct dcn31_vpg_registers *vpg_regs,
+	const struct dcn31_vpg_shift *vpg_shift,
+	const struct dcn31_vpg_mask *vpg_mask);
+
+#endif
-- 
2.25.1

[PATCH 32/33] drm/amd/display: remove force_enable_edp_fec param.

[Mikita Lipski]

From: Ian Chen <ian.chen@amd.com>

Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Ian Chen <ian.chen@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 ++--
 drivers/gpu/drm/amd/display/dc/dc.h           | 2 --
 2 files changed, 2 insertions(+), 4 deletions(-)

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 746b31ba2708..4f4992f5bfd9 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -4282,8 +4282,8 @@ bool dc_link_should_enable_fec(const struct dc_link *link)
 	if ((link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT_MST &&
 			link->local_sink &&
 			link->local_sink->edid_caps.panel_patch.disable_fec) ||
-			(link->connector_signal == SIGNAL_TYPE_EDP &&
-					link->dc->debug.force_enable_edp_fec == false)) // Disable FEC for eDP
+			(link->connector_signal == SIGNAL_TYPE_EDP
+				))
 		is_fec_disable = true;
 
 	if (dc_link_is_fec_supported(link) && !link->dc->debug.disable_fec && !is_fec_disable)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 15b67239266e..8897750bdaea 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -641,8 +641,6 @@ struct dc_debug_options {
 	/* Enable dmub aux for legacy ddc */
 	bool enable_dmub_aux_for_legacy_ddc;
 	bool optimize_edp_link_rate; /* eDP ILR */
-	/* force enable edp FEC */
-	bool force_enable_edp_fec;
 	/* FEC/PSR1 sequence enable delay in 100us */
 	uint8_t fec_enable_delay_in100us;
 	bool enable_driver_sequence_debug;
-- 
2.25.1

[PATCH 33/33] drm/amd/display: Enable mem low power control for DCN3.1 sub-IP blocks

[Mikita Lipski]

From: Michael Strauss <michael.strauss@amd.com>

[WHY]
Sequences to handle powering down these sub-IP blocks are now ready for use

Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
---
 .../drm/amd/display/dc/dcn31/dcn31_resource.c    | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index cf6392eadaf2..613d34bde7dd 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -1009,15 +1009,15 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.use_max_lb = true,
 	.enable_mem_low_power = {
 		.bits = {
-			.vga = false,
-			.i2c = false,
+			.vga = true,
+			.i2c = true,
 			.dmcu = false, // This is previously known to cause hang on S3 cycles if enabled
-			.dscl = false,
-			.cm = false,
-			.mpc = false,
-			.optc = false,
-			.vpg = false,
-			.afmt = false,
+			.dscl = true,
+			.cm = true,
+			.mpc = true,
+			.optc = true,
+			.vpg = true,
+			.afmt = true,
 		}
 	},
 	.optimize_edp_link_rate = true,
-- 
2.25.1

RE: [PATCH 00/33] DC Patches September 08, 2021

[Wheeler, Daniel]

[Public]

Hi all,
 
This week this patchset was tested on the following systems:
 
HP Envy 360, with Ryzen 5 4500U, with the following display types: eDP 1080p 60hz, 4k 60hz  (via USB-C to DP/HDMI), 1440p 144hz (via USB-C to DP/HDMI), 1680*1050 60hz (via USB-C to DP and then DP to DVI/VGA)
 
AMD Ryzen 9 5900H, with the following display types: eDP 1080p 60hz, 4k 60hz  (via USB-C to DP/HDMI), 1440p 144hz (via USB-C to DP/HDMI), 1680*1050 60hz (via USB-C to DP and then DP to DVI/VGA)
 
Sapphire Pulse RX5700XT with the following display types:
4k 60hz  (via DP/HDMI), 1440p 144hz (via DP/HDMI), 1680*1050 60hz (via DP to DVI/VGA)
 
Reference AMD RX6800 with the following display types:
4k 60hz  (via DP/HDMI and USB-C to DP/HDMI), 1440p 144hz (via USB-C to DP/HDMI and USB-C to DP/HDMI), 1680*1050 60hz (via DP to DVI/VGA)
 
Included testing using a Startech DP 1.4 MST hub at 2x 4k 60hz, and 3x 1080p 60hz on all systems.
 
 
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
 
 
Thank you,
 
Dan Wheeler
Technologist  |  AMD
SW Display
------------------------------------------------------------------------------------------------------------------
1 Commerce Valley Dr E, Thornhill, ON L3T 7X6
Facebook |  Twitter |  amd.com  

-----Original Message-----
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> On Behalf Of Mikita Lipski
Sent: September 8, 2021 10:54 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 <Qingqing.Zhuo@amd.com>; Lipski, Mikita <Mikita.Lipski@amd.com>; Li, Roman <Roman.Li@amd.com>; Jacob, Anson <Anson.Jacob@amd.com>; Lin, Wayne <Wayne.Lin@amd.com>; Wang, Chao-kai (Stylon) <Stylon.Wang@amd.com>; Chiu, Solomon <Solomon.Chiu@amd.com>
Subject: [PATCH 00/33] DC Patches September 08, 2021

This DC patchset brings improvements in multiple areas. In summary, we highlight:

* bandwidth optimizations on following fast updates
* fixes and code improvements of DP connector blanking
* add thread to offload work of MST HPD IRQ function
* fix gamma coefficients
* provide backlight support for APUs without DMUB support
* coverity memory leak and warning fixes
* DSC MST bandwidth calculation fixes
* DMUB enhances

Anson Jacob (3):
  drm/amd/display: Fix false BAD_FREE warning from Coverity
  drm/amd/display: Fix multiple memory leaks reported by coverity
  drm/amd/display: Revert "Directly retrain link from debugfs"

Anthony Koo (2):
  drm/amd/display: [FW Promotion] Release 0.0.81
  drm/amd/display: [FW Promotion] Release 0.0.82

Aric Cyr (2):
  drm/amd/display: 3.2.151
  drm/amd/display: 3.2.152

Aurabindo Pillai (1):
  drm/amd/display: Add flag to detect dpms force off during HPD

Dale Zhao (1):
  drm/amd/display: Refine condition of cursor visibility for pipe-split

Eric Yang (1):
  drm/amd/display: Add periodic detection when zstate is enabled

Harry Wentland (1):
  drm/amd/display: Get backlight from PWM if DMCU is not initialized

Hersen Wu (1):
  drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3

Ian Chen (1):
  drm/amd/display: remove force_enable_edp_fec param.

Jaehyun Chung (3):
  drm/amd/display: Add regamma/degamma coefficients and set sRGB when TF
    is BT709
  drm/amd/display: Correct degamma coefficients
  drm/amd/display: Revert adding degamma coefficients

Jimmy Kizito (1):
  drm/amd/display: Fix dynamic link encoder access.

Josip Pavic (1):
  drm/amd/display: unblock abm when odm is enabled only on configs that
    support it

Leo (Hanghong) Ma (3):
  drm/amd/display: Add DPCD writes at key points
  drm/amd/display: Fix system hang at boot
  drm/amd/display: Add helper for blanking all dp displays

Meenakshikumar Somasundaram (2):
  drm/amd/display: Fix for null pointer access for ddc pin and aux
    engine.
  drm/amd/display: Link training retry fix for abort case

Michael Strauss (2):
  drm/amd/display: Add VPG and AFMT low power support for DCN3.1
  drm/amd/display: Enable mem low power control for DCN3.1 sub-IP blocks

Nicholas Kazlauskas (1):
  drm/amd/display: Optimize bandwidth on following fast update

Qingqing Zhuo (3):
  drm/amd/display: Revert "dc: w/a for hard hang on HPD on native DP"
  drm/amd/display: Apply w/a for hard hang on HPD
  drm/amd/display: Fix unstable HPCP compliance on Chrome Barcelo

Wayne Lin (2):
  drm/amd/display: Add option to defer works of hpd_rx_irq
  drm/amd/display: Fork thread to offload work of hpd_rx_irq

Wenjing Liu (2):
  drm/amd/display: move bpp range decision in decide dsc bw range
    function
  drm/amd/display: update conditions to do dfp cap ext validation

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 266 ++++++++++++++----  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  51 +++-
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |   3 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c    |  16 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c |   6 +
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  18 +-
 .../display/amdgpu_dm/amdgpu_dm_mst_types.h   |  11 +-
 .../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c |  16 +-
 .../display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c  |   4 +-
 drivers/gpu/drm/amd/display/dc/core/dc.c      |  31 +-
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 139 ++++++++-  .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 138 ++++++---
 .../drm/amd/display/dc/core/dc_link_dpcd.c    |  11 +-
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c |  25 +-
 .../drm/amd/display/dc/core/dc_link_hwss.c    |  20 +-
 .../gpu/drm/amd/display/dc/core/dc_resource.c |   3 +-
 drivers/gpu/drm/amd/display/dc/dc.h           |   9 +-
 drivers/gpu/drm/amd/display/dc/dc_dsc.h       |   6 +-
 drivers/gpu/drm/amd/display/dc/dc_link.h      |  10 +-
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c  |  12 +-
 .../drm/amd/display/dc/dce/dce_panel_cntl.c   |  10 -
 .../amd/display/dc/dce/dce_stream_encoder.c   |   2 +
 .../display/dc/dce110/dce110_hw_sequencer.c   |  55 ++--
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |  86 ++----
 .../drm/amd/display/dc/dcn10/dcn10_resource.c |   2 +-
 .../display/dc/dcn10/dcn10_stream_encoder.c   |  20 ++
 .../display/dc/dcn10/dcn10_stream_encoder.h   |   2 +
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    |  23 +-
 .../drm/amd/display/dc/dcn20/dcn20_resource.c |  20 +-
 .../display/dc/dcn20/dcn20_stream_encoder.c   |   5 +
 .../display/dc/dcn20/dcn20_stream_encoder.h   |   1 +
 .../gpu/drm/amd/display/dc/dcn30/dcn30_afmt.c |  24 +-  .../gpu/drm/amd/display/dc/dcn30/dcn30_afmt.h |  24 ++
 .../dc/dcn30/dcn30_dio_stream_encoder.c       |   2 +
 .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    |  39 +--
 .../gpu/drm/amd/display/dc/dcn30/dcn30_init.c |   1 +
 .../drm/amd/display/dc/dcn30/dcn30_resource.c |   6 +-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c  |   2 +-
 .../gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h  |  11 +
 .../amd/display/dc/dcn301/dcn301_resource.c   |   6 +-
 .../amd/display/dc/dcn302/dcn302_resource.c   |   6 +-
 drivers/gpu/drm/amd/display/dc/dcn31/Makefile |   3 +-
 .../gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c |  92 ++++++  .../gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h | 126 +++++++++
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |  60 +---
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.h    |   2 +-
 .../gpu/drm/amd/display/dc/dcn31/dcn31_init.c |   1 -
 .../drm/amd/display/dc/dcn31/dcn31_resource.c |  74 +++--  .../gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c  |  87 ++++++  .../gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h  | 162 +++++++++++
 drivers/gpu/drm/amd/display/dc/dm_helpers.h   |   4 +
 drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c   | 126 +++++----
 .../amd/display/dc/inc/hw/stream_encoder.h    |   2 +
 .../gpu/drm/amd/display/dc/inc/hw_sequencer.h |   2 +-
 .../gpu/drm/amd/display/dc/inc/link_enc_cfg.h |   5 +
 .../gpu/drm/amd/display/dc/inc/link_hwss.h    |   1 +
 .../display/dc/irq/dcn21/irq_service_dcn21.c  |  25 ++
 .../display/dc/irq/dcn21/irq_service_dcn21.h  |   2 +
 .../gpu/drm/amd/display/dc/irq/irq_service.c  |   2 +-
 .../gpu/drm/amd/display/dc/irq/irq_service.h  |   4 +
 .../dc/virtual/virtual_stream_encoder.c       |   2 +
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |   4 +
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   |   4 +-
 .../gpu/drm/amd/display/dmub/src/dmub_dcn31.c |   8 +
 .../gpu/drm/amd/display/dmub/src/dmub_dcn31.h |   2 +
 .../gpu/drm/amd/display/dmub/src/dmub_srv.c   |  10 +-
 .../gpu/drm/amd/display/include/dal_asic_id.h |   2 +-
 .../gpu/drm/amd/display/include/dpcd_defs.h   |   1 +
 .../amd/display/include/link_service_types.h  |  16 ++
 .../amd/display/modules/color/color_gamma.c   |  32 ++-
 70 files changed, 1528 insertions(+), 475 deletions(-)  create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.h
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h

--
2.25.1