diff options
| author | Sakari Ailus <sakari.ailus@iki.fi> | 2010-03-03 18:49:38 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 02:32:42 +0300 |
| commit | 02adb1cc765b8c29dc83c6602bda19003cce62f1 (patch) | |
| tree | 067fd5a73251f6dc33567926c409a0b1070710ab /include/media | |
| parent | ea8aa4349e11c62242a8908fc172de27d7a151d7 (diff) | |
| download | linux-02adb1cc765b8c29dc83c6602bda19003cce62f1.tar.xz | |
[media] v4l: subdev: Events support
Provide v4l2_subdevs with v4l2_event support. Subdev drivers only need very
little to support events.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David Cohen <dacohen@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-subdev.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 3276065022ef..0f9937be53d2 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -37,6 +37,8 @@ struct v4l2_device; struct v4l2_ctrl_handler; +struct v4l2_event_subscription; +struct v4l2_fh; struct v4l2_subdev; struct tuner_setup; @@ -161,6 +163,10 @@ struct v4l2_subdev_core_ops { int (*s_power)(struct v4l2_subdev *sd, int on); int (*interrupt_service_routine)(struct v4l2_subdev *sd, u32 status, bool *handled); + int (*subscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub); + int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub); }; /* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio. @@ -437,6 +443,8 @@ struct v4l2_subdev_internal_ops { #define V4L2_SUBDEV_FL_IS_SPI (1U << 1) /* Set this flag if this subdev needs a device node. */ #define V4L2_SUBDEV_FL_HAS_DEVNODE (1U << 2) +/* Set this flag if this subdev generates events. */ +#define V4L2_SUBDEV_FL_HAS_EVENTS (1U << 3) /* Each instance of a subdev driver should create this struct, either stand-alone or embedded in a larger struct. @@ -460,6 +468,8 @@ struct v4l2_subdev { void *host_priv; /* subdev device node */ struct video_device devnode; + /* number of events to be allocated on open */ + unsigned int nevents; }; #define vdev_to_v4l2_subdev(vdev) \ |