[PATCH v4 02/27] media: entity: Add has_route entity operation

["Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>]

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

The optional operation can be used by entities to report whether two
pads are internally connected.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 include/media/media-entity.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index c7c254c5bca1761b..bcb08c1f8c6265e8 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -177,6 +177,9 @@ struct media_pad {
  * @link_validate:	Return whether a link is valid from the entity point of
  *			view. The media_pipeline_start() function
  *			validates all links by calling this operation. Optional.
+ * @has_route:		Return whether a route exists inside the entity between
+ *			two given pads. Optional. If the operation isn't
+ *			implemented all pads will be considered as connected.
  *
  * .. note::
  *
@@ -188,6 +191,8 @@ struct media_entity_operations {
 			  const struct media_pad *local,
 			  const struct media_pad *remote, u32 flags);
 	int (*link_validate)(struct media_link *link);
+	bool (*has_route)(struct media_entity *entity, unsigned int pad0,
+			  unsigned int pad1);
 };
 
 /**
-- 
2.12.2