drm/amd/display: extend delta clamping logic to CM3 LUT helper

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[ Upstream commit d25b32aa82 ]

Commit 27fc10d109 ("drm/amd/display: Fix the delta clamping for shaper
LUT") fixed banding when using plane shaper LUT in DCN10 CM helper.  The
problem is also present in DCN30 CM helper, fix banding by extending the
same bug delta clamping fix to CM3.

Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0274a54897)
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Melissa Wen 2025-12-08 22:44:15 -01:00 • committed by Greg Kroah-Hartman

parent 02d209bb01

commit 7165dc5133

5 changed files with 49 additions and 25 deletions

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30

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c

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2

drivers/gpu/drm/amd/display/dc/dwb/dcn30/dcn30_cm_common.h

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9

drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c

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17

drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c

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16

drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c

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