drm/amd/display: Prune Invalid Modes For HDMI Output

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[ Upstream commit abdd2768d7 ]

[Why]
1. HDMI does not have 6 bpc support. Having 6 bpc pass validation
does not comply with spec.
2. Validate 420 only for native HDMI, but not apply to pcon use
case.
3. Current mode validation log is not readable.

[how]
1. Cap 8 bpc for dp-hdmi converter.
2. Validate yuv420 for pcon use case as well,
   if rgb/yuv444 8bpc cannot fit into pcon bw limitation of
   the link from the converter to HDMI sink.
3. Add readable pixel_format and color_depth into debug log.

Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Fangzhi Zuo 2024-10-17 18:15:10 -04:00 • committed by Greg Kroah-Hartman

parent f46e40df44

commit 60dde89f94

4 changed files with 59 additions and 8 deletions

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19

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

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40

drivers/gpu/drm/amd/display/dc/core/dc_debug.c

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6

drivers/gpu/drm/amd/display/dc/core/dc_stream.c

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2

drivers/gpu/drm/amd/display/dc/inc/core_status.h

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