[media] media: Introduce internal index for media entities

[mirror_ubuntu-zesty-kernel.git] / include / media / media-entity.h

diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 81aca1f5a09afcad7e8ccda39b5ceea74407d46e..30e8f9fd3efab88480c79437641b6a041c545ccb 100644 (file)
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -157,6 +157,8 @@ struct media_entity_operations {
  * @num_pads:  Number of sink and source pads.
  * @num_links: Total number of links, forward and back, enabled and disabled.
  * @num_backlinks: Number of backlinks
+ * @internal_idx: An unique internal entity specific number. The numbers are
+ *             re-used if entities are unregistered or registered again.
  * @pads:      Pads array with the size defined by @num_pads.
  * @links:     List of data links.
  * @ops:       Entity operations.
@@ -183,6 +185,7 @@ struct media_entity {
        u16 num_pads;
        u16 num_links;
        u16 num_backlinks;
+       int internal_idx;
 
        struct media_pad *pads;
        struct list_head links;