[media] v4l: v4l2_subdev userspace frame interval API
The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL,
VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be
used to enumerate and configure a subdev's frame rate from userspace.
Two new video::g/s_frame_interval subdev operations are introduced to
support those ioctls. The existing video::g/s_parm operations are
deprecated and shouldn't be used anymore.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/v4l2-subdev.c b/drivers/media/video/v4l2-subdev.c
index 207cc5c..a4a1256 100644
--- a/drivers/media/video/v4l2-subdev.c
+++ b/drivers/media/video/v4l2-subdev.c
@@ -232,6 +232,22 @@
return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh,
fse);
}
+
+ case VIDIOC_SUBDEV_G_FRAME_INTERVAL:
+ return v4l2_subdev_call(sd, video, g_frame_interval, arg);
+
+ case VIDIOC_SUBDEV_S_FRAME_INTERVAL:
+ return v4l2_subdev_call(sd, video, s_frame_interval, arg);
+
+ case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
+ struct v4l2_subdev_frame_interval_enum *fie = arg;
+
+ if (fie->pad >= sd->entity.num_pads)
+ return -EINVAL;
+
+ return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh,
+ fie);
+ }
#endif
default:
return -ENOIOCTLCMD;