v4l2_hw_freq_seek  248 include/media/v4l2-ioctl.h 					const struct v4l2_hw_freq_seek *a);
v4l2_hw_freq_seek 2064 include/uapi/linux/videodev2.h #define VIDIOC_S_HW_FREQ_SEEK	 _IOW('V', 82, struct v4l2_hw_freq_seek)