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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2011-09-09 20:10:02 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-11-04 00:29:02 +0400
commit1a99b972a86ba9c3984c042f7f641458ad4812d0 (patch)
tree9df50bc45b66553be10aa9843b2467427c038676 /include
parent3e0ec41c5c5ee14e27f65e28d4a616de34f59a97 (diff)
downloadlinux-1a99b972a86ba9c3984c042f7f641458ad4812d0.tar.xz
[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')
-rw-r--r--include/media/v4l2-subdev.h1
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