On Gen3 there might be a CSI2 bridge between the video source and the
VIN. Add helpers to check for this and to fetch the bridge subdevice.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
drivers/media/platform/rcar-vin/rcar-core.c | 19 +++++++++++++++++++
drivers/media/platform/rcar-vin/rcar-vin.h | 2 ++
2 files changed, 21 insertions(+)
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
index f382f91..a409157 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -369,6 +369,11 @@ static int rvin_group_vin_to_csi(struct rvin_dev *vin)
return csi;
}
+bool vin_have_bridge(struct rvin_dev *vin)
+{
+ return vin->digital.subdev == NULL;
+}
+
struct rvin_graph_entity *vin_to_entity(struct rvin_dev *vin)
{
int csi;
@@ -399,6 +404,20 @@ struct v4l2_subdev *vin_to_source(struct rvin_dev *vin)
return vin->group->source[csi].subdev;
}
+struct v4l2_subdev *vin_to_bridge(struct rvin_dev *vin)
+{
+ int csi;
+
+ if (vin->digital.subdev)
+ return NULL;
+
+ csi = rvin_group_vin_to_csi(vin);
+ if (csi < 0)
+ return NULL;
+
+ return vin->group->bridge[csi].subdev;
+}
+
/* -----------------------------------------------------------------------------
* Async notifier helpers
*/
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 2f1e087..acaed2b 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -206,8 +206,10 @@ struct rvin_dev {
struct v4l2_rect compose;
};
+bool vin_have_bridge(struct rvin_dev *vin);
struct rvin_graph_entity *vin_to_entity(struct rvin_dev *vin);
struct v4l2_subdev *vin_to_source(struct rvin_dev *vin);
+struct v4l2_subdev *vin_to_bridge(struct rvin_dev *vin);
/* Debug */
#define vin_dbg(d, fmt, arg...) dev_dbg(d->dev, fmt, ##arg)
--
2.10.2
--
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