drm/amd/display: Test FRL bandwidth lookup

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[WHAT]
Add KUnit tests for get_conv_frl_bw() covering a protocol converter
without FRL support, a downstream port that is not HDMI, a sink whose
maximum FRL rate is zero and the case where the converter rate is the
bottleneck.

[HOW]
Populate the display info and the downstream port capabilities of the
connector for each case and check both the returned verdict and the
bandwidth values it reports.

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 01:05:18 -06:00 • committed by Alex Deucher

parent 814fdfcfde

commit 85333609b1

3 changed files with 140 additions and 2 deletions

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5

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

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2

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

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135

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

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