diff options
| author | Roman Li <Roman.Li@amd.com> | 2019-08-30 10:44:48 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-25 16:50:08 -0400 |
| commit | e0d08a40a63bd43f373937084f4c3bfab68f6afc (patch) | |
| tree | cbb26773bc75315696f00a9c1f36f5fdbf37a7c3 /drivers/gpu/drm/amd/display/amdgpu_dm | |
| parent | 37b970d1d793d900c04d444366994636278ebec8 (diff) | |
drm/amd/display: Add debugfs entry for reading psr state
[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 <Roman.Li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index e29c6314f98c..bdb37e611015 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -969,6 +969,25 @@ static int force_yuv420_output_get(void *data, u64 *val) DEFINE_DEBUGFS_ATTRIBUTE(force_yuv420_output_fops, force_yuv420_output_get, force_yuv420_output_set, "%llu\n"); +/* + * Read PSR state + */ +static int psr_get(void *data, u64 *val) +{ + struct amdgpu_dm_connector *connector = data; + struct dc_link *link = connector->dc_link; + uint32_t psr_state = 0; + + dc_link_get_psr_state(link, &psr_state); + + *val = psr_state; + + return 0; +} + + +DEFINE_DEBUGFS_ATTRIBUTE(psr_fops, psr_get, NULL, "%llu\n"); + void connector_debugfs_init(struct amdgpu_dm_connector *connector) { int i; @@ -982,6 +1001,8 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector) dp_debugfs_entries[i].fops); } } + if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) + debugfs_create_file_unsafe("psr_state", 0444, dir, connector, &psr_fops); debugfs_create_file_unsafe("force_yuv420_output", 0644, dir, connector, &force_yuv420_output_fops); |