drm/amd/display: adjust floating point format for gamut remap when needed

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[Why]
The MPCCs different gamut remap matrices allow for S2D13 and S3D12 floating
point formats, but only S2D13 is used. There may be cases where
more integer bits are required.

[How]
Switch to S3D12 if any entries in the remap matrix cannot fit in S2D13.
Otherwise, prefer the extra precision of S2D13. Communicate the max value
that hw can support to dm via dc color caps.

Signed-off-by: Clay King <clayking@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Clay King 2026-09-21 15:17:46 -04:00 • committed by Alex Deucher

parent 66d90cf561

commit 30116d1e27

1 changed files with 2 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/resource/dcn60/dcn60_resource.c

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