lib/igt_amd: add helper to R/W DM visual confirm debug option

[why & how]
AMDGPU DM exposure a debugfs interface entry of visual confirm
debug option which is configured for debugging like surface
programming. It also supports the PSR feature visual confirm
debugging. We'd add helpers to read/write visual confirm debug
option from/to such interface entry.

The interface entry "amdgpu_dm_visual_confirm" is located in the
debugfs directory. We'd add the enumeration of visual confirm
option which is aligned to the amdgpu kernel driver.

Changes in v2:
--------------------
- close the file descriptor before return in helper of setting
  visual confirm
- drop the '_dm_' from helpers to check visual confirm debugfs
  existence, get/set option from/to the debugfs entry.

Cc: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Wayne Lin <wayne.lin@amd.com>

Signed-off-by: David Zhang <dingchen.zhang@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>

0 files changed, 0 insertions, 0 deletions