From: Anson Jacob <Anson.Jacob@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: <Harry.Wentland@amd.com>, <Sunpeng.Li@amd.com>,
<Bhawanpreet.Lakha@amd.com>, <Rodrigo.Siqueira@amd.com>,
<Aurabindo.Pillai@amd.com>, <qingqing.zhuo@amd.com>,
<mikita.lipski@amd.com>, <roman.li@amd.com>,
<Anson.Jacob@amd.com>, <wayne.lin@amd.com>, <stylon.wang@amd.com>,
<solomon.chiu@amd.com>,
Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>,
Jun Lei <Jun.Lei@amd.com>
Subject: [PATCH 12/24] drm/amd/display: Fix for link encoder access for MST.
Date: Fri, 24 Sep 2021 15:09:22 -0400 [thread overview]
Message-ID: <20210924190934.1193379-13-Anson.Jacob@amd.com> (raw)
In-Reply-To: <20210924190934.1193379-1-Anson.Jacob@amd.com>
From: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
[Why]
Link encoder in the link could be null for certain links.
[How]
If link encoder in the link is null then get the link encoder
from the stream.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 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 cab7993b4cc5..f3a1219c0bb9 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3305,7 +3305,7 @@ enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
- struct link_encoder *link_encoder = link->link_enc;
+ struct link_encoder *link_encoder = NULL;
struct stream_encoder *stream_encoder = pipe_ctx->stream_res.stream_enc;
struct dp_mst_stream_allocation_table proposed_table = {0};
struct fixed31_32 avg_time_slots_per_mtp;
@@ -3315,6 +3315,13 @@ enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx)
enum act_return_status ret;
DC_LOGGER_INIT(link->ctx->logger);
+ /* Link encoder may have been dynamically assigned to non-physical display endpoint. */
+ if (link->ep_type == DISPLAY_ENDPOINT_PHY)
+ link_encoder = link->link_enc;
+ else if (link->dc->res_pool->funcs->link_encs_assign)
+ link_encoder = link_enc_cfg_get_link_enc_used_by_stream(pipe_ctx->stream->ctx->dc, stream);
+ ASSERT(link_encoder);
+
/* enable_link_dp_mst already check link->enabled_stream_count
* and stream is in link->stream[]. This is called during set mode,
* stream_enc is available.
@@ -3392,7 +3399,7 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
- struct link_encoder *link_encoder = link->link_enc;
+ struct link_encoder *link_encoder = NULL;
struct stream_encoder *stream_encoder = pipe_ctx->stream_res.stream_enc;
struct dp_mst_stream_allocation_table proposed_table = {0};
struct fixed31_32 avg_time_slots_per_mtp = dc_fixpt_from_int(0);
@@ -3400,6 +3407,13 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx)
bool mst_mode = (link->type == dc_connection_mst_branch);
DC_LOGGER_INIT(link->ctx->logger);
+ /* Link encoder may have been dynamically assigned to non-physical display endpoint. */
+ if (link->ep_type == DISPLAY_ENDPOINT_PHY)
+ link_encoder = link->link_enc;
+ else if (link->dc->res_pool->funcs->link_encs_assign)
+ link_encoder = link_enc_cfg_get_link_enc_used_by_stream(pipe_ctx->stream->ctx->dc, stream);
+ ASSERT(link_encoder);
+
/* deallocate_mst_payload is called before disable link. When mode or
* disable/enable monitor, new stream is created which is not in link
* stream[] yet. For this, payload is not allocated yet, so de-alloc
--
2.25.1
next prev parent reply other threads:[~2021-09-24 19:10 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 19:09 [PATCH 00/24] DC Patches Sep 24, 2021 Anson Jacob
2021-09-24 19:09 ` [PATCH 01/24] drm/amd/display: use correct vpg instance for 128b/132b encoding Anson Jacob
2021-09-24 19:09 ` [PATCH 02/24] drm/amd/display: [FW Promotion] Release 0.0.85 Anson Jacob
2021-09-24 19:09 ` [PATCH 03/24] drm/amd/display: Don't enable AFMT for DP audio stream Anson Jacob
2021-09-24 19:09 ` [PATCH 04/24] drm/amd/display: add vsync notify to dmub for abm pause Anson Jacob
2021-09-24 19:09 ` [PATCH 05/24] drm/amd/display: Add debug support to override the Minimum DRAM Clock Anson Jacob
2021-09-24 19:09 ` [PATCH 06/24] drm/amd/display: update cur_lane_setting to an array one for each lane Anson Jacob
2021-09-24 19:09 ` [PATCH 07/24] drm/amd/display: add function to convert hw to dpcd lane settings Anson Jacob
2021-09-24 19:09 ` [PATCH 08/24] drm/amd/display: implement decide " Anson Jacob
2021-09-24 19:09 ` [PATCH 09/24] drm/amd/display: rename lane_settings to hw_lane_settings Anson Jacob
2021-09-24 19:09 ` [PATCH 10/24] drm/amd/display: decouple hw_lane_settings from dpcd_lane_settings Anson Jacob
2021-09-24 19:09 ` [PATCH 11/24] drm/amd/display: add two lane settings training options Anson Jacob
2021-09-24 19:09 ` Anson Jacob [this message]
2021-09-24 19:09 ` [PATCH 13/24] drm/amd/display: Fix MST link encoder availability check Anson Jacob
2021-09-24 19:09 ` [PATCH 14/24] drm/amd/display: Add PPS immediate update flag for DCN2 Anson Jacob
2021-09-24 19:09 ` [PATCH 15/24] drm/amd/display: Add an extra check for dcn10 OPTC data format Anson Jacob
2021-09-24 19:09 ` [PATCH 16/24] drm/amd/display: [FW Promotion] Release 0.0.86 Anson Jacob
2021-09-24 19:09 ` [PATCH 17/24] drm/amd/display: 3.2.155 Anson Jacob
2021-09-24 19:09 ` [PATCH 18/24] drm/amd/display: Replace referral of dal with dc Anson Jacob
2021-09-24 19:09 ` [PATCH 19/24] drm/amd/display: Defer LUT memory powerdown until LUT bypass latches Anson Jacob
2021-09-24 19:09 ` [PATCH 20/24] drm/amd/display: initialize backlight_ramping_override to false Anson Jacob
2021-09-24 19:09 ` [PATCH 21/24] drm/amd/display: make verified link cap not exceeding max link cap Anson Jacob
2021-09-24 19:09 ` [PATCH 22/24] drm/amd/display: Handle Y carry-over in VCP X.Y calculation Anson Jacob
2021-09-24 19:09 ` [PATCH 23/24] drm/amd/display: Update VCP X.Y logging to improve usefulness Anson Jacob
2021-09-24 19:09 ` [PATCH 24/24] drm/amd/display: Pass PCI deviceid into DC Anson Jacob
2021-09-27 13:21 ` [PATCH 00/24] DC Patches Sep 24, 2021 Wheeler, Daniel
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