drm/amd/display: Test GFX9 DCC plane attributes

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[WHAT]
Add KUnit tests for
amdgpu_dm_plane_fill_gfx9_plane_attributes_from_modifiers() covering
DCC enablement, validation failure, and the RB+ 64B/128B and GFX9
64B/unconstrained block modes.

Add the dm_test_gfx9_attrs(), dm_test_setup_gfx9_dcc_device() and
dm_test_gfx9_dcc_modifier() helpers used to build the GFX9 DCC inputs.

Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
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 2026-06-26 17:35:52 -06:00 • committed by Alex Deucher

parent bc35db67a6

commit fd1522c72d

1 changed files with 351 additions and 0 deletions

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

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