diff options
Diffstat (limited to 'include/media/v4l2-device.h')
| -rw-r--r-- | include/media/v4l2-device.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h index d61febfb166..ffb69da3ce9 100644 --- a/include/media/v4l2-device.h +++ b/include/media/v4l2-device.h @@ -120,6 +120,14 @@ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd); int __must_check v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev); +/* Send a notification to v4l2_device. */ +static inline void v4l2_subdev_notify(struct v4l2_subdev *sd, + unsigned int notification, void *arg) +{ + if (sd && sd->v4l2_dev && sd->v4l2_dev->notify) + sd->v4l2_dev->notify(sd, notification, arg); +} + /* Iterate over all subdevs. */ #define v4l2_device_for_each_subdev(sd, v4l2_dev) \ list_for_each_entry(sd, &(v4l2_dev)->subdevs, list) @@ -190,4 +198,17 @@ v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev); ##args); \ }) +#define v4l2_device_has_op(v4l2_dev, o, f) \ +({ \ + struct v4l2_subdev *__sd; \ + bool __result = false; \ + list_for_each_entry(__sd, &(v4l2_dev)->subdevs, list) { \ + if (v4l2_subdev_has_op(__sd, o, f)) { \ + __result = true; \ + break; \ + } \ + } \ + __result; \ +}) + #endif |