drm/amd/display: Add connector debugfs for "output_bpc"

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[Why]
This will be useful for verifying whether we enter the correct output
color depth from IGT.

[How]
Locks the connector and associated CRTC if available and outputs
the current and maximum output bpc values.

Example:

cat /sys/kernel/debug/dri/0/DP-1/output_bpc
Current: 8
Maximum: 10

v2: Drop unneeded connector status check

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nicholas Kazlauskas 2019-06-03 13:44:37 -04:00 • committed by Alex Deucher

parent 80f41f84ae

commit 4b7ef85cc6

1 changed files with 69 additions and 2 deletions

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

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