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media: v4l: async: Support fwnode endpoint list matching for subdevs

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Support matching V4L2 async sub-devices based on particular fwnode
endpoint. This makes it possible to instantiate multiple V4L2 sub-devices
based on given fwnode endpoints from a single device, based on driver
needs.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de> # imx6qp
Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> # rcar + adv746x
Tested-by: Aishwarya Kothari <aishwarya.kothari@toradex.com> # Apalis i.MX6Q with TC358743
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> # Renesas RZ/G2L SMARC
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Sakari Ailus
2023-04-28 15:58:42 +02:00
committed by Mauro Carvalho Chehab
parent 765f60568f
commit e74f7a9678
4 changed files with 90 additions and 2 deletions
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8
include/media/v4l2-subdev.h
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@@ -1022,6 +1022,8 @@ struct v4l2_subdev_platform_data {
* either dev->of_node->fwnode or dev->fwnode (whichever is non-NULL).
* @async_list: Links this subdev to a global subdev_list or
* @notifier->done_list list.
* @async_subdev_endpoint_list: List entry in async_subdev_endpoint_entry of
* &struct v4l2_async_subdev_endpoint.
* @subdev_notifier: A sub-device notifier implicitly registered for the sub-
* device using v4l2_async_register_subdev_sensor().
* @asc_list: Async connection list, of &struct
@@ -1065,6 +1067,7 @@ struct v4l2_subdev {
struct device *dev;
struct fwnode_handle *fwnode;
struct list_head async_list;
struct list_head async_subdev_endpoint_list;
struct v4l2_async_notifier *subdev_notifier;
struct list_head asc_list;
struct v4l2_subdev_platform_data *pdata;
@@ -1382,8 +1385,9 @@ int __v4l2_subdev_init_finalize(struct v4l2_subdev *sd, const char *name,
* v4l2_subdev_cleanup() - Releases the resources allocated by the subdevice
* @sd: The subdevice
*
* This function will release the resources allocated in
* v4l2_subdev_init_finalize.
* Clean up a V4L2 async sub-device. Must be called for a sub-device as part of
* its release if resources have been associated with it using
* v4l2_async_subdev_endpoint_add() or v4l2_subdev_init_finalize().
*/
void v4l2_subdev_cleanup(struct v4l2_subdev *sd);