linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.h, branch v5.6

amdgpu_dm: no need to check return value of debugfs_create functions

2019-06-13T18:59:49Z

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Harry Wentland Cc: Leo Li Cc: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: David Airlie Cc: Daniel Vetter Cc: Nicholas Kazlauskas Cc: David Francis Cc: Mario Kleiner Cc: Bhawanpreet Lakha Cc: Anthony Koo Cc: hersen wu Cc: "Leo (Hanghong) Ma" Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Alex Deucher

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

2018-08-27T20:20:17Z

[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 Reviewed-by: Jordan Lazare Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Add front end for dp debugfs files

2018-07-05T21:38:38Z

As part of hardware certification, read-write access to the link rate, lane count, voltage swing, pre-emphasis, and PHY test pattern of DP connectors is required. This commit adds debugfs files that will correspond to these values. The file operations are not yet implemented: currently writing or reading them does nothing. Signed-off-by: David Francis Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher