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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-09-09 13:10:02 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-03 18:29:02 -0200 |
| commit | 1a99b972a86ba9c3984c042f7f641458ad4812d0 (patch) | |
| tree | 9df50bc45b66553be10aa9843b2467427c038676 /include/media | |
| parent | 3e0ec41c5c5ee14e27f65e28d4a616de34f59a97 (diff) | |
| download | lwn-1a99b972a86ba9c3984c042f7f641458ad4812d0.tar.gz lwn-1a99b972a86ba9c3984c042f7f641458ad4812d0.zip | |
[media] V4L: add .g_std() core V4L2 subdevice operation
VIDIOC_G_STD can return the current TV-norm to the user in one of two ways:
if an .vidioc_g_std() ioctl operation is provided by the driver, it is
called, otherwise the value ot the .current_norm field of struct
video_device is returned. Since subdevice drivers currently have no access
to struct video_device objects, the only way to provide this information to
the user is by implementing a .g_std() method.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-subdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 5dd049a7437d..f0f3358d1b1b 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -158,6 +158,7 @@ struct v4l2_subdev_core_ops { int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls); int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm); + int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm); int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm); long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg); #ifdef CONFIG_VIDEO_ADV_DEBUG |