drm/amd/display: Add stream overhead in BW calculations for 128b/132b

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[Why]
Current BW calculations do not account for the additional padding added
for uncompressed pixel-to-symbol packing.

This results in X.Y being too low for 128b/132b SST streams in certain
scenarios. If X.Y is too low, end user can observe image corruption.

[How]
Add function to calculate stream overhead to timing BW calculation for
128b/132b SST cases.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

George Shen 2023-04-10 20:00:46 -04:00 • committed by Alex Deucher

parent 3999edf8ba

commit 9747641808

2 changed files with 44 additions and 0 deletions

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2

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

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42

drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c

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