drm/amd/display: Test MST VCPI slot calc

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[WHAT]
Add KUnit tests for dm_update_mst_vcpi_slots_for_dsc(), covering an
empty commit and the writeback, non-MST and unmatched stream skips.

[HOW]
The tests build a commit holding a single connector and vary its type
and MST output port so every early-skip branch is reached without an MST
topology or a matching DC stream.

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 21:00:45 -06:00 • committed by Alex Deucher

parent c81cf25b0a

commit a7e4ae748c

3 changed files with 116 additions and 3 deletions

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7

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

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3

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

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109

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

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