drm/amd/display: Test cached suspend state

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[Why]
Add KUnit tests for dm_cache_state() covering successful caching
on an empty DRM device and propagation of an atomic suspend error.

[How]
Use the standard DRM KUnit device for the success path and the
shared DM ops table to inject the suspend failure.

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>
Signed-off-by: Ray Wu <ray.wu@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 2026-08-14 12:58:31 -06:00 • committed by Alex Deucher

parent afa47a06f2

commit 9344d7185b

3 changed files with 44 additions and 2 deletions

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5

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

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1

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

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40

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

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