drm/amd/display: Test DMCU firmware load

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[WHAT]
Add KUnit tests for load_dmcu_fw(), covering the ASICs and DCN IP
versions without a DMCU, an unsupported IP version, the three Raven
revisions, and a missing firmware image.

[HOW]
No firmware is installed in the test environment, so
amdgpu_ucode_request() reports -ENODEV and the missing image is treated
as non-fatal.

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 21:00:44 -06:00 • committed by Alex Deucher

parent 22dbf5c4b2

commit bd58757973

3 changed files with 104 additions and 1 deletions

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3

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

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1

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

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101

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

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