v4l2_async_notifier_add_fwnode_remote_subdev is a convenience function for
parsing information on V4L2 fwnode subdevs.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-async.c | 23 +++++++++++++++++++++++
include/media/v4l2-async.h | 24 ++++++++++++++++++++++++
2 files changed, 47 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 4cb49d5f8c03..9c1937d6ce17 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -608,6 +608,29 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
}
EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_subdev);
+int
+v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
+ struct fwnode_handle *endpoint,
+ struct v4l2_async_subdev *asd)
+{
+ struct fwnode_handle *remote_ep;
+ int ret;
+
+ remote_ep = fwnode_graph_get_remote_endpoint(endpoint);
+ if (!remote_ep)
+ return -ENOTCONN;
+
+ asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
+ asd->match.fwnode = remote_ep;
+
+ ret = v4l2_async_notifier_add_subdev(notif, asd);
+ if (ret)
+ fwnode_handle_put(remote_ep);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_remote_subdev);
+
struct v4l2_async_subdev *
v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
int adapter_id, unsigned short address,
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index 1497bda66c3b..215e73eddfc3 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -184,6 +184,30 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
unsigned int asd_struct_size);
/**
+ * v4l2_async_notifier_add_fwnode_remote_subdev - Allocate and add a fwnode
+ * remote async subdev to the
+ * notifier's master asd_list.
+ *
+ * @notifier: pointer to &struct v4l2_async_notifier
+ * @endpoint: local endpoint the remote sub-device to be matched
+ * @asd_struct_size: size of the driver's async sub-device struct, including
+ * sizeof(struct v4l2_async_subdev). The &struct
+ * v4l2_async_subdev shall be the first member of
+ * the driver's async sub-device struct, i.e. both
+ * begin at the same memory address.
+ *
+ * Allocate a fwnode-matched asd of size asd_struct_size, and add it
+ * to the notifiers @asd_list.
+ *
+ * This is just like @v4l2_async_notifier_add_fwnode_subdev, but with the
+ * exception that the fwnode refers to a local endpoint, not the remote one.
+ */
+int
+v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
+ struct fwnode_handle *endpoint,
+ struct v4l2_async_subdev *asd);
+
+/**
* v4l2_async_notifier_add_i2c_subdev - Allocate and add an i2c async
* subdev to the notifier's master asd_list.
*
--
2.11.0
