drm/amd/display: Add KUnit tests for writeback connector

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[WHAT]
Add KUnit tests for amdgpu_dm_wb_encoder_atomic_check() and
amdgpu_dm_wb_connector_get_modes(). Tests cover null job,
null fb, size mismatch, format validation, and mode count
bounds using DRM KUnit mock devices.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@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 2026-05-25 12:08:49 -06:00 • committed by Alex Deucher

parent 042b0a3980

commit 948739e14f

4 changed files with 355 additions and 2 deletions

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7

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

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13

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

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1

drivers/gpu/drm/amd/display/amdgpu_dm/tests/Makefile

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336

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

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