drm/amd/display: Test DC plane info fill

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[WHAT]
Add KUnit tests for fill_dc_plane_info_and_addr(), covering every
graphics and video pixel format mapping, all rotations, the unsupported
format and invalid colour encoding rejections, and the z-order and
blending forwarding.

[HOW]
A linear GFX9 framebuffer is the simplest input that lets the buffer
attribute helper succeed, so the format switch can be walked without a
live display core.

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>

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This commit is contained in:

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

parent bac1f965cc

commit 2565faf54f

3 changed files with 254 additions and 1 deletions

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3

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

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6

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

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246

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

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