drm/amd/display: Test HDMI HPD debounce re-detect

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[WHAT]
amdgpu_dm_hdmi_hpd_debounce_work() only ran with detection
failing, so neither outcome of the sink comparison that decides whether
an HPD toggle was spurious was covered.

[HOW]
Add a fixture for the debounce work item and two tests: a
re-detect finding the same sink, which re-enables internally without
notifying userspace, and one finding a different sink, which sends the
hotplug event.

Assisted-by: Copilot:Claude-Opus-5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@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 2026-09-04 00:00:59 -06:00 • committed by Alex Deucher

parent 92cfd5eb14

commit ed32f69ac5

1 changed files with 114 additions and 0 deletions

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

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