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 | 46 |
1 files changed, 45 insertions, 1 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 4eecf052d08d..aa4edf182095 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 @@ -50,6 +50,13 @@ struct dmub_debugfs_trace_entry { uint32_t param1; }; +static const char *const mst_progress_status[] = { + "probe", + "remote_edid", + "allocate_new_payload", + "clear_allocated_payload", +}; + /* parse_write_buffer_into_params - Helper function to parse debugfs write buffer into an array * * Function takes in attributes passed to debugfs write entry @@ -2590,6 +2597,41 @@ static int dp_is_mst_connector_show(struct seq_file *m, void *unused) return 0; } +/* + * function description: Read out the mst progress status + * + * This function helps to determine the mst progress status of + * a mst connector. + * + * Access it with the following command: + * + * cat /sys/kernel/debug/dri/0/DP-X/mst_progress_status + * + */ +static int dp_mst_progress_status_show(struct seq_file *m, void *unused) +{ + struct drm_connector *connector = m->private; + struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); + struct amdgpu_device *adev = drm_to_adev(connector->dev); + int i; + + mutex_lock(&aconnector->hpd_lock); + mutex_lock(&adev->dm.dc_lock); + + if (aconnector->mst_status == MST_STATUS_DEFAULT) { + seq_puts(m, "disabled\n"); + } else { + for (i = 0; i < sizeof(mst_progress_status)/sizeof(char *); i++) + seq_printf(m, "%s:%s\n", + mst_progress_status[i], + aconnector->mst_status & BIT(i) ? "done" : "not_done"); + } + + mutex_unlock(&adev->dm.dc_lock); + mutex_unlock(&aconnector->hpd_lock); + + return 0; +} DEFINE_SHOW_ATTRIBUTE(dp_dsc_fec_support); DEFINE_SHOW_ATTRIBUTE(dmub_fw_state); @@ -2601,6 +2643,7 @@ DEFINE_SHOW_ATTRIBUTE(hdcp_sink_capability); DEFINE_SHOW_ATTRIBUTE(internal_display); DEFINE_SHOW_ATTRIBUTE(psr_capability); DEFINE_SHOW_ATTRIBUTE(dp_is_mst_connector); +DEFINE_SHOW_ATTRIBUTE(dp_mst_progress_status); static const struct file_operations dp_dsc_clock_en_debugfs_fops = { .owner = THIS_MODULE, @@ -2744,7 +2787,8 @@ static const struct { {"dp_dsc_fec_support", &dp_dsc_fec_support_fops}, {"max_bpc", &dp_max_bpc_debugfs_fops}, {"dsc_disable_passthrough", &dp_dsc_disable_passthrough_debugfs_fops}, - {"is_mst_connector", &dp_is_mst_connector_fops} + {"is_mst_connector", &dp_is_mst_connector_fops}, + {"mst_progress_status", &dp_mst_progress_status_fops} }; #ifdef CONFIG_DRM_AMD_DC_HDCP |