drm/amd/display: Add support for hw_state logging via debugfs

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[Why]

We have logging methods for printing hardware state for newer ASICs
but no way to trigger the log output.

[How]

Add support for triggering the output via writing to a debugfs file
entry. Log output currently goes into dmesg for convenience, but
accessing via a read should be possible later.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Jordan Lazare <Jordan.Lazare@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nicholas Kazlauskas 2018-08-14 15:40:57 -04:00 • committed by Alex Deucher

parent e5d0170e56

commit e498eb7136

4 changed files with 77 additions and 4 deletions

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5

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

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53

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

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1

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

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22

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

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