diff options
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 9 | ||||
| -rw-r--r-- | include/media/v4l2-ctrls.h | 5 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index 3f27571b814d..9051ec53875c 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -2885,6 +2885,15 @@ int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh, } EXPORT_SYMBOL(v4l2_ctrl_subscribe_event); +int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub) +{ + if (!sd->ctrl_handler) + return -EINVAL; + return v4l2_ctrl_subscribe_event(fh, sub); +} +EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event); + unsigned int v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait) { struct v4l2_fh *fh = file->private_data; diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index 91125b6f05a5..1e849461fc9d 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -654,4 +654,9 @@ int v4l2_subdev_s_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs int v4l2_subdev_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl); int v4l2_subdev_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl); +/* Can be used as a subscribe_event function that just subscribes control + events. */ +int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub); + #endif |