drm/amd/display: Test vblank IRQ handling

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[Why]
Add KUnit tests for manage_dm_interrupts(), covering the off delay
derived from the stream timing, the 30ms fallback, the DCN3.5 APU
instant off, and the vblank disable path.

[How]
The IRQ subsystem is not installed, so amdgpu_irq_get() and
amdgpu_irq_put() only report the missing source; the point is that the
affected DCN versions request it at all.

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

parent caff8bf6b5

commit aa0ef8aaeb

3 changed files with 122 additions and 3 deletions

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7

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

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2

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

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116

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

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