drm/amd/display: Test framebuffer prepare and cleanup

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[WHAT]
Add KUnit tests for amdgpu_dm_plane_helper_prepare_fb() and
amdgpu_dm_plane_helper_cleanup_fb() covering the early return taken when
the plane state carries no framebuffer, so no buffer object is pinned or
unpinned.

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: Ivan Lipski <ivan.lipski@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 2026-08-11 17:11:03 -06:00 • committed by Alex Deucher

parent 49906ba608

commit 485f70efa7

3 changed files with 48 additions and 4 deletions

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10

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

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2

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

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40

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

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