drm/amd/display: Test panic flush DCC teardown

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[WHAT]
Add a KUnit test for amdgpu_dm_plane_panic_flush() covering the
request to clear DCC and tiling on the active pipe.

[HOW]
Install a spy on dc->hwss.clear_surface_dcc_and_tiling and drive the
flush with a non-linear framebuffer, counting the calls that ask for
the tiling teardown.

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: Chenyu Chen <chen-yu.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Alex Hung 2026-08-29 13:39:07 -06:00 • committed by Alex Deucher

parent 7352d162d0

commit 48c78d2199

1 changed files with 57 additions and 0 deletions

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

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