[PATCH v4 20/27] rcar-vin: register a media pad if running in media controller mode

[Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>]

When running in media controller mode a media pad is needed, register
one.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
 drivers/media/platform/rcar-vin/rcar-core.c | 9 +++++++++
 drivers/media/platform/rcar-vin/rcar-vin.h  | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
index 7aaa01dee014d64b..f560d27449b84882 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -267,7 +267,16 @@ static int rvin_group_init(struct rvin_dev *vin)
 	if (ret)
 		return ret;
 
+	vin->pad.flags = MEDIA_PAD_FL_SINK;
+	ret = media_entity_pads_init(&vin->vdev->entity, 1, &vin->pad);
+	if (ret)
+		goto error_v4l2;
+
 	return 0;
+error_v4l2:
+	rvin_v4l2_mc_remove(vin);
+
+	return ret;
 }
 
 /* -----------------------------------------------------------------------------
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 6f2b1e28381678a9..06934313950253f4 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -103,6 +103,8 @@ struct rvin_info {
  * @notifier:		V4L2 asynchronous subdevs notifier
  * @digital:		entity in the DT for local digital subdevice
  *
+ * @pad:		pad for media controller
+ *
  * @lock:		protects @queue
  * @queue:		vb2 buffers queue
  *
@@ -132,6 +134,8 @@ struct rvin_dev {
 	struct v4l2_async_notifier notifier;
 	struct rvin_graph_entity digital;
 
+	struct media_pad pad;
+
 	struct mutex lock;
 	struct vb2_queue queue;
 
-- 
2.12.2