drm/amd/display: Add active plane count tests for crtc

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Expose amdgpu_dm_crtc_count_crtc_active_planes() for KUnit and add tests
covering the empty plane list and the mixed case exercising the mask
filter, cursor skip, missing plane state, and framebuffer presence
branches.

Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Bhawanpreet Lakha 2026-07-15 14:45:41 -04:00 • committed by Alex Deucher

parent 7d52e9cf80

commit 5eccb2c27b

3 changed files with 118 additions and 1 deletions

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3

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

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1

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

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115

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

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