+void ivtv_set_funcs(struct video_device *vdev);
+int ivtv_s_std(struct file *file, void *fh, v4l2_std_id *std);
+int ivtv_s_frequency(struct file *file, void *fh, struct v4l2_frequency *vf);
+int ivtv_s_input(struct file *file, void *fh, unsigned int inp);
+int ivtv_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg);