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

drm/amd/display: add color space option when sending link test pattern

2019-11-19T15:12:52Z

[why] In the TEST_MSIC dpcd register field definition, the test equipment has the option to choose between YCbCr601 or YCbCr709. We will apply corresponding YCbCr coefficient based on this test request. [how] Add a new input parameter in dc_link_dp_set_test_pattern to allow the selection between different color space. Signed-off-by: Wenjing Liu Reviewed-by: Nikola Cornij Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Add debugfs entry for reading psr state

2019-10-25T20:50:08Z

[Why] For upcoming PSR stupport it's useful to have debug entry to verify psr state. [How] - Enable psr dc api for Linux - Add psr_state file to eDP connector debugfs usage e.g.: cat /sys/kernel/debug/dri/0/DP-1/psr_state Signed-off-by: Roman Li Reviewed-by: Nicholas Kazlauskas Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Add debugfs entry to force YUV420 output

2019-09-17T13:06:54Z

[Why] Even if YUV420 is available for video mode, YUV444 is still automatically selected. This poses a problem for compliance tests. [How] Add a per-connector debugfs entry "force_yuv420_output" to force selection of YUV420 mode. Signed-off-by: Stylon Wang Reviewed-by: Nicholas Kazlauskas Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: MST topology debugfs

2019-08-23T16:43:28Z

DRM provides drm_dp_mst_dump_topology, which prints useful information about MST devices Hook this up to a debugfs file named amdgpu_mst_topology Signed-off-by: David Francis Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher

Merge branch 'drm-next' into drm-next-5.3

2019-06-25T13:42:25Z

Backmerge drm-next and fix up conflicts due to drmP.h removal. Signed-off-by: Alex Deucher

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 connector debugfs for "output_bpc"

2019-06-11T17:40:14Z

[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 Reviewed-by: David Francis Signed-off-by: Alex Deucher

drm/amd: drop use of drmP.h in amdgpu.h

2019-06-10T20:59:53Z

Delete the unused drmP.h from amdgpu.h. Fix fallout in various files. Signed-off-by: Sam Ravnborg Reviewed-by: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: David Airlie Cc: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190609220757.10862-5-sam@ravnborg.org

drm/amd/display: Add debugfs entry for amdgpu_dm_visual_confirm

2019-04-10T18:53:27Z

[Why] DC provides a few visual confirmation debug options that can be dynamically changed at runtime to help debug surface programming issues but we don't have any way to access it from userspace. [How] Add the amdgpu_dm_visual_confirm debugfs entry. It accepts a string containing the DC visual confirm enum value using the debugfs attribute helpers. The debugfs_create_file_unsafe can be used instead of debugfs_create_file as per the documentation. v2: Use debugfs helpers for getting and setting the value (Christian) Cc: Leo Li Cc: Harry Wentland Signed-off-by: Nicholas Kazlauskas Reviewed-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Add debugfs dpcd interface

2019-03-21T04:39:49Z

[Why] We need arbitrary read/write over DP AUX DPCD for debugging [How] Three debugfs entries Set the target address by writing to "aux_dpcd_address" (The first four bytes written are used) Set the transaction size in bytes by writing to "aux_dpcd_size" (The first four bytes written are used) Start a transaction by reading/writing "aux_dpcd_data" Do note: there is no concerrency protection at all Accessing these entries in quick succession can lead to strange behaviour Signed-off-by: David Francis Reviewed-by: Harry Wentland Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher