drm/amd/display: Test MST connector creation

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[WHAT]
Add KUnit tests for dm_dp_add_mst_connector() covering successful
connector creation, inheritance of the master connector properties and
the connector init failure path.

[HOW]
Set up an MST topology manager owned by a master amdgpu_dm_connector
plus the mode properties the helper attaches, then add a port and check
the resulting connector, its property values and the encoder links. The
failure path is driven by a mode config without the connector functions
required by drm_connector_init(), and the port reference count is
checked to confirm the error unwind releases it.

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>

...

This commit is contained in:

Alex Hung 2026-08-30 01:04:11 -06:00 • committed by Alex Deucher

parent cc8755b738

commit c091982756

3 changed files with 208 additions and 1 deletions

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3

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

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4

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

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202

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

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