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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 /drivers/media/v4l2-core/v4l2-async.c | |
| parent | 7a9ec808ad46d1e02e5e766a83adc5f88e5df264 (diff) | |
| download | linux-aef69d54755d45edefbf347a51efd1673d7daed9.tar.bz2 | |
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 'drivers/media/v4l2-core/v4l2-async.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-async.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index 57bd54016064..49f7eccc76db 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -474,19 +474,25 @@ int v4l2_async_subdev_notifier_register(struct v4l2_subdev *sd, } EXPORT_SYMBOL(v4l2_async_subdev_notifier_register); -void v4l2_async_notifier_unregister(struct v4l2_async_notifier *notifier) +static void __v4l2_async_notifier_unregister( + struct v4l2_async_notifier *notifier) { - if (!notifier->v4l2_dev && !notifier->sd) + if (!notifier || (!notifier->v4l2_dev && !notifier->sd)) return; - mutex_lock(&list_lock); - v4l2_async_notifier_unbind_all_subdevs(notifier); notifier->sd = NULL; notifier->v4l2_dev = NULL; list_del(¬ifier->list); +} + +void v4l2_async_notifier_unregister(struct v4l2_async_notifier *notifier) +{ + mutex_lock(&list_lock); + + __v4l2_async_notifier_unregister(notifier); mutex_unlock(&list_lock); } @@ -596,6 +602,11 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd) { mutex_lock(&list_lock); + __v4l2_async_notifier_unregister(sd->subdev_notifier); + v4l2_async_notifier_cleanup(sd->subdev_notifier); + kfree(sd->subdev_notifier); + sd->subdev_notifier = NULL; + if (sd->asd) { struct v4l2_async_notifier *notifier = sd->notifier; |