drm/amd/display: Test mode and plane init

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[WHAT]
Add KUnit tests for amdgpu_dm_mode_config_init() and initialize_plane(),
covering the mode config defaults, the Hawaii preferred shadow quirk,
the DM private object state, and primary and overlay plane creation.

[HOW]
drm_atomic_private_obj_init() builds the private state through
dm_atomic_create_state(), so a current DC state is enough to exercise
it. Audio is disabled for the duration of the test so no audio component
is left registered on the mock device.

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 21:00:44 -06:00 • committed by Alex Deucher

parent 207964daac

commit 69ec2e82fb

3 changed files with 144 additions and 5 deletions

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12

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

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5

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

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132

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

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