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authorSakari Ailus <sakari.ailus@linux.intel.com>2019-02-28 16:25:28 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-07-25 15:03:03 +0300
commit820342aca05188c9af4b468d6c41b3327161f7ad (patch)
tree4a7dcf5e28bb01b8e55941ac2bd673971db271ce /include/media
parent016413d967061fc2eb6798a487b3022bef7698a6 (diff)
downloadlinux-820342aca05188c9af4b468d6c41b3327161f7ad.tar.xz
media: v4l2-async: Add v4l2_async_notifier_add_fwnode_remote_subdev
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@linux.intel.com> Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-async.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index a95f7fd8969e..8319284c93cb 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -182,6 +182,31 @@ 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.
+ *
+ * @notif: pointer to &struct v4l2_async_notifier
+ * @endpoint: local endpoint pointing to the remote sub-device to be matched
+ * @asd: Async sub-device struct allocated by the caller. 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.
+ *
+ * Gets the remote endpoint of a given local endpoint, set it up for fwnode
+ * matching and adds the async sub-device to the notifier's @asd_list. The
+ * function also gets a reference of the fwnode which is released later at
+ * notifier cleanup time.
+ *
+ * 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, and
+ * the function relies on the caller to allocate the async sub-device struct.
+ */
+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.
*