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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2011-06-13 17:44:42 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 17:53:31 -0300 |
| commit | 523f46d6aba9dcb0a2d0fc474ca884e93a7cf198 (patch) | |
| tree | 5c73cecf3d9786868ac03c93f7df2df6a465d9a6 /include/media/v4l2-fh.h | |
| parent | 95904d4b6a188ea2f0f1781498f6ca626e21b9ac (diff) | |
| download | lwn-523f46d6aba9dcb0a2d0fc474ca884e93a7cf198.tar.gz lwn-523f46d6aba9dcb0a2d0fc474ca884e93a7cf198.zip | |
[media] v4l2-events/fh: merge v4l2_events into v4l2_fh
Drivers that supported events used to be rare, but now that controls can also
raise events this will become much more common since almost all drivers have
controls.
This means that keeping struct v4l2_events as a separate struct make no more
sense. Merging it into struct v4l2_fh simplifies things substantially as it
is now an integral part of the filehandle struct.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/v4l2-fh.h')
| -rw-r--r-- | include/media/v4l2-fh.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/media/v4l2-fh.h b/include/media/v4l2-fh.h index d2471116ad68..bfc0457ca6ef 100644 --- a/include/media/v4l2-fh.h +++ b/include/media/v4l2-fh.h @@ -29,15 +29,22 @@ #include <linux/list.h> struct video_device; -struct v4l2_events; struct v4l2_ctrl_handler; struct v4l2_fh { struct list_head list; struct video_device *vdev; - struct v4l2_events *events; /* events, pending and subscribed */ struct v4l2_ctrl_handler *ctrl_handler; enum v4l2_priority prio; + + /* Events */ + wait_queue_head_t wait; + struct list_head subscribed; /* Subscribed events */ + struct list_head free; /* Events ready for use */ + struct list_head available; /* Dequeueable event */ + unsigned int navailable; + unsigned int nallocated; /* Number of allocated events */ + u32 sequence; }; /* @@ -46,7 +53,7 @@ struct v4l2_fh { * from driver's v4l2_file_operations->open() handler if the driver * uses v4l2_fh. */ -int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev); +void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev); /* * Add the fh to the list of file handles on a video_device. The file * handle must be initialised first. |