drm/amd/display: Test DC plane attributes

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[WHAT]
Add KUnit tests for fill_dc_plane_attributes(), covering the copy of the
plane info into the DC plane state and the scaling, pixel format and 3D
LUT rejection paths.

[HOW]
Reuse the plane info fixture and add a CRTC state complete enough for
the colour management update. A scaling factor of 1 in the plane caps
means no scaling, which matches the 1:1 geometry of the fixture.

Assisted-by: Copilot:Claude-Opus-5 GPT-5.6-Sol
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Alex Hung 2026-08-13 21:00:45 -06:00 • committed by Alex Deucher

parent 2565faf54f

commit c81cf25b0a

3 changed files with 134 additions and 4 deletions

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9

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

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3

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

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126

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

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