drm/amd/display: Test MCCS FreeSync VCP helpers

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[WHAT]
Add KUnit coverage for dm_helpers_read_mccs_caps and
dm_helpers_mccs_vcp_set, including the DP/HDMI/legacy-PCON selection,
the i2c VCP request and set packets and the retry-failure paths.

Assisted-by: Copilot:Claude-Opus-4.8
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Alex Hung 2026-06-24 23:34:18 -06:00 • committed by Alex Deucher

parent f5e5e134dc

commit a30c4e979b

2 changed files with 421 additions and 0 deletions

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2

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

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419

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

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