drm/amd/display: Test dm_helpers_read_local_edid

Browse source

[WHAT]
Add KUnit tests for dm_helpers_read_local_edid() covering the AUX read
that returns a valid EDID, the compliance test request that acknowledges
the EDID checksum, and the I2C path where no sink responds.

[HOW]
The helper publishes the EDID through drm_edid_connector_update(), which
needs a fully initialised connector, so the tests build a real one. A
fake AUX channel serves the EDID and answers the native DPCD reads, and
a fake I2C algorithm always reports no response.

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: Ivan Lipski <ivan.lipski@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 2026-08-11 14:07:04 -06:00 • committed by Alex Deucher

parent 41d39cd1e8

commit 777571d517

2 changed files with 233 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

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

View file

231

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

View file