drm/amd/display: Test vblank counter and scanout position

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[WHAT]
Add KUnit tests for dm_vblank_get_counter() and dm_crtc_get_scanoutpos()
covering a CRTC whose stream is not owned by any pipe in the resource
context, and the branch that disables idle optimizations before reading
the scanout position.

[HOW]
Wire a DC context, a current DC state and a logger to the device so both
callbacks walk the resource context instead of returning early.

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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Alex Hung 2026-08-13 14:00:33 -06:00 • committed by Alex Deucher

parent 2fb66192d3

commit 6815b3ebc4

1 changed files with 95 additions and 0 deletions

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

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