drm/amd/display: Test page flip interrupt state update

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[WHAT]
Add KUnit tests for dm_update_pflip_irq_state() covering DCN, where there
is nothing to reapply, and DCE, where the current interrupt state is
reapplied to the pageflip source.

[HOW]
Add a spy for the pageflip IRQ source. amdgpu_irq_update() always
dispatches through src->funcs->set(), which needs a registered IH ring on
real hardware, so the spy records the requested type and state instead.

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 14:03:17 -06:00 • committed by Alex Deucher

parent b56e334dbd

commit 0e956130a2

3 changed files with 83 additions and 2 deletions

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5

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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78

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

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