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authorSakari Ailus <sakari.ailus@linux.intel.com>2017-09-24 18:47:44 -0400
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-10-31 14:03:15 -0400
commitaef69d54755d45edefbf347a51efd1673d7daed9 (patch)
tree9f2cde71ace5b74d602a6dfe3865f7502729f649 /include/media/v4l2-async.h
parent7a9ec808ad46d1e02e5e766a83adc5f88e5df264 (diff)
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.h22
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
*