drm: add a path blob property

[cascardo/linux.git] / drivers / gpu / drm / drm_crtc.c

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index f939b05..bd74226 100644 (file)
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1257,6 +1257,7 @@ static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 {
        struct drm_property *edid;
        struct drm_property *dpms;
+       struct drm_property *dev_path;
 
        /*
         * Standard properties (apply to all connectors)
@@ -1271,6 +1272,12 @@ static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
                                   ARRAY_SIZE(drm_dpms_enum_list));
        dev->mode_config.dpms_property = dpms;
 
+       dev_path = drm_property_create(dev,
+                                      DRM_MODE_PROP_BLOB |
+                                      DRM_MODE_PROP_IMMUTABLE,
+                                      "PATH", 0);
+       dev->mode_config.path_property = dev_path;
+
        return 0;
 }
 
@@ -3755,6 +3762,25 @@ done:
        return ret;
 }
 
+int drm_mode_connector_set_path_property(struct drm_connector *connector,
+                                        char *path)
+{
+       struct drm_device *dev = connector->dev;
+       int ret, size;
+       size = strlen(path) + 1;
+
+       connector->path_blob_ptr = drm_property_create_blob(connector->dev,
+                                                           size, path);
+       if (!connector->path_blob_ptr)
+               return -EINVAL;
+
+       ret = drm_object_property_set_value(&connector->base,
+                                           dev->mode_config.path_property,
+                                           connector->path_blob_ptr->base.id);
+       return ret;
+}
+EXPORT_SYMBOL(drm_mode_connector_set_path_property);
+
 /**
  * drm_mode_connector_update_edid_property - update the edid property of a connector
  * @connector: drm connector