diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 24 |
1 files changed, 24 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 36a1d794b4af..f3dfb2887ae0 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 @@ -1053,9 +1053,33 @@ static int target_backlight_read(struct seq_file *m, void *data) return 0; } +static int mst_topo(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = (struct drm_info_node *)m->private; + struct drm_device *dev = node->minor->dev; + struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; + struct amdgpu_dm_connector *aconnector; + + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) + continue; + + aconnector = to_amdgpu_dm_connector(connector); + + seq_printf(m, "\nMST topology for connector %d\n", aconnector->connector_id); + drm_dp_mst_dump_topology(m, &aconnector->mst_mgr); + } + drm_connector_list_iter_end(&conn_iter); + + return 0; +} + static const struct drm_info_list amdgpu_dm_debugfs_list[] = { {"amdgpu_current_backlight_pwm", ¤t_backlight_read}, {"amdgpu_target_backlight_pwm", &target_backlight_read}, + {"amdgpu_mst_topology", &mst_topo}, }; /* |