diff options
Diffstat (limited to 'include/media/videobuf2-core.h')
| -rw-r--r-- | include/media/videobuf2-core.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index a15d1f1b319e..924e95e0a0a6 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -244,12 +244,23 @@ struct vb2_ops { void (*buf_queue)(struct vb2_buffer *vb); }; +struct v4l2_fh; + /** * struct vb2_queue - a videobuf queue * * @type: queue type (see V4L2_BUF_TYPE_* in linux/videodev2.h * @io_modes: supported io methods (see vb2_io_modes enum) * @io_flags: additional io flags (see vb2_fileio_flags enum) + * @lock: pointer to a mutex that protects the vb2_queue struct. The + * driver can set this to a mutex to let the v4l2 core serialize + * the queuing ioctls. If the driver wants to handle locking + * itself, then this should be set to NULL. This lock is not used + * by the videobuf2 core API. + * @owner: The filehandle that 'owns' the buffers, i.e. the filehandle + * that called reqbufs, create_buffers or started fileio. + * This field is not used by the videobuf2 core API, but it allows + * drivers to easily associate an owner filehandle with the queue. * @ops: driver-specific callbacks * @mem_ops: memory allocator specific callbacks * @drv_priv: driver private data @@ -273,6 +284,8 @@ struct vb2_queue { enum v4l2_buf_type type; unsigned int io_modes; unsigned int io_flags; + struct mutex *lock; + struct v4l2_fh *owner; const struct vb2_ops *ops; const struct vb2_mem_ops *mem_ops; |