drm/amd/display: add KUnit tests for audio commit path

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[WHAT]
Add KUnit coverage for amdgpu_dm_commit_audio(), the remaining function
reported as untested by gcov.

The tests build hand-rolled drm_atomic_state arrays and back
dc_stream_get_status() with a fake dc->current_state to cover the
removal and addition ELD notifications along with their guard/skip
paths: writeback connector, detached connector, missing new CRTC state,
no modeset, and absent stream status.

Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@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 2026-07-13 14:34:09 -06:00 • committed by Alex Deucher

parent ff1df0051c

commit 563c7e12b9

2 changed files with 533 additions and 0 deletions

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1

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

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532

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

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