drm: Add reference counting to blob properties

[firefly-linux-kernel-4.4.55.git] / include / drm / drm_crtc.h

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index ca71c03143d1bc07a161267b35d2de80a2a4b279..5626191f3af0ddbea2bce691b2778c4ea64e9feb 100644 (file)
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -216,6 +216,8 @@ struct drm_framebuffer {
 
 struct drm_property_blob {
        struct drm_mode_object base;
+       struct drm_device *dev;
+       struct kref refcount;
        struct list_head head;
        size_t length;
        unsigned char data[];
@@ -1048,6 +1050,7 @@ struct drm_mode_group {
  * @poll_running: track polling status for this device
  * @output_poll_work: delayed work for polling in process context
  * @property_blob_list: list of all the blob property objects
+ * @blob_lock: mutex for blob property allocation and management
  * @*_property: core property tracking
  * @preferred_depth: preferred RBG pixel depth, used by fb helpers
  * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
@@ -1103,6 +1106,8 @@ struct drm_mode_config {
        bool delayed_event;
        struct delayed_work output_poll_work;
 
+       struct mutex blob_lock;
+
        /* pointers to standard properties */
        struct list_head property_blob_list;
        struct drm_property *edid_property;
@@ -1362,6 +1367,13 @@ struct drm_property *drm_property_create_object(struct drm_device *dev,
                                         int flags, const char *name, uint32_t type);
 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
                                         const char *name);
+struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
+                                                   size_t length,
+                                                   const void *data);
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+                                                   uint32_t id);
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
+void drm_property_unreference_blob(struct drm_property_blob *blob);
 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
 extern int drm_property_add_enum(struct drm_property *property, int index,
                                 uint64_t value, const char *name);
@@ -1525,14 +1537,6 @@ static inline struct drm_property *drm_property_find(struct drm_device *dev,
        return mo ? obj_to_property(mo) : NULL;
 }
 
-static inline struct drm_property_blob *
-drm_property_blob_find(struct drm_device *dev, uint32_t id)
-{
-       struct drm_mode_object *mo;
-       mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
-       return mo ? obj_to_blob(mo) : NULL;
-}
-
 /* Plane list iterator for legacy (overlay only) planes. */
 #define drm_for_each_legacy_plane(plane, planelist) \
        list_for_each_entry(plane, planelist, head) \