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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-09-24 18:47:44 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-10-31 14:03:15 -0400 |
| commit | aef69d54755d45edefbf347a51efd1673d7daed9 (patch) | |
| tree | 9f2cde71ace5b74d602a6dfe3865f7502729f649 /include/media/v4l2-async.h | |
| parent | 7a9ec808ad46d1e02e5e766a83adc5f88e5df264 (diff) | |
| download | blackbird-op-linux-aef69d54755d45edefbf347a51efd1673d7daed9.tar.gz blackbird-op-linux-aef69d54755d45edefbf347a51efd1673d7daed9.zip | |
media: v4l: fwnode: Add a convenience function for registering sensors
Add a convenience function for parsing firmware for information on related
devices using v4l2_async_notifier_parse_fwnode_sensor_common() registering
the notifier and finally the async sub-device itself.
This should be useful for sensor drivers that do not have device specific
requirements related to firmware information parsing or the async
framework.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media/v4l2-async.h')
| -rw-r--r-- | include/media/v4l2-async.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index 8d8cfc3f3100..6152434cbe82 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -174,6 +174,28 @@ void v4l2_async_notifier_cleanup(struct v4l2_async_notifier *notifier); int v4l2_async_register_subdev(struct v4l2_subdev *sd); /** + * v4l2_async_register_subdev_sensor_common - registers a sensor sub-device to + * the asynchronous sub-device + * framework and parse set up common + * sensor related devices + * + * @sd: pointer to struct &v4l2_subdev + * + * This function is just like v4l2_async_register_subdev() with the exception + * that calling it will also parse firmware interfaces for remote references + * using v4l2_async_notifier_parse_fwnode_sensor_common() and registers the + * async sub-devices. The sub-device is similarly unregistered by calling + * v4l2_async_unregister_subdev(). + * + * While registered, the subdev module is marked as in-use. + * + * An error is returned if the module is no longer loaded on any attempts + * to register it. + */ +int __must_check v4l2_async_register_subdev_sensor_common( + struct v4l2_subdev *sd); + +/** * v4l2_async_unregister_subdev - unregisters a sub-device to the asynchronous * subdevice framework * |
