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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2010-08-02 02:05:09 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 10:53:27 +0300 |
| commit | f0beea8f46142ea7abd7ed3f44fd0967c603fae0 (patch) | |
| tree | 66b74b8b01eeb051faabeb8bb94ce64c1dbfb3e4 /drivers/media/video/v4l2-subdev.c | |
| parent | 7cd5a16b22af7dc92190a60f336b6854a6fcb99d (diff) | |
| download | linux-f0beea8f46142ea7abd7ed3f44fd0967c603fae0.tar.xz | |
[media] v4l: subdev: Add new file operations
V4L2 sub-devices store pad formats and crop settings in the file handle.
To let drivers initialize those settings properly, add an open operation
that is called when the subdev is opened as well as a corresponding
close operation.
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 'drivers/media/video/v4l2-subdev.c')
| -rw-r--r-- | drivers/media/video/v4l2-subdev.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/media/video/v4l2-subdev.c b/drivers/media/video/v4l2-subdev.c index 6cef6ad3c9ce..bc763db385df 100644 --- a/drivers/media/video/v4l2-subdev.c +++ b/drivers/media/video/v4l2-subdev.c @@ -61,7 +61,7 @@ static int subdev_open(struct file *file) struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); struct v4l2_subdev_fh *subdev_fh; #if defined(CONFIG_MEDIA_CONTROLLER) - struct media_entity *entity; + struct media_entity *entity = NULL; #endif int ret; @@ -101,9 +101,19 @@ static int subdev_open(struct file *file) } #endif + if (sd->internal_ops && sd->internal_ops->open) { + ret = sd->internal_ops->open(sd, subdev_fh); + if (ret < 0) + goto err; + } + return 0; err: +#if defined(CONFIG_MEDIA_CONTROLLER) + if (entity) + media_entity_put(entity); +#endif v4l2_fh_del(&subdev_fh->vfh); v4l2_fh_exit(&subdev_fh->vfh); subdev_fh_free(subdev_fh); @@ -114,13 +124,13 @@ err: static int subdev_close(struct file *file) { -#if defined(CONFIG_MEDIA_CONTROLLER) struct video_device *vdev = video_devdata(file); struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); -#endif struct v4l2_fh *vfh = file->private_data; struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); + if (sd->internal_ops && sd->internal_ops->close) + sd->internal_ops->close(sd, subdev_fh); #if defined(CONFIG_MEDIA_CONTROLLER) if (sd->v4l2_dev->mdev) media_entity_put(&sd->entity); |