v4l2_modulator   1420 include/linux/videodev2.h #define VIDIOC_G_MODULATOR	_IOWR('V', 54, struct v4l2_modulator)
v4l2_modulator   1421 include/linux/videodev2.h #define VIDIOC_S_MODULATOR	 _IOW('V', 55, struct v4l2_modulator)
v4l2_modulator    177 include/media/v4l2-ioctl.h 					struct v4l2_modulator *a);
v4l2_modulator    179 include/media/v4l2-ioctl.h 					struct v4l2_modulator *a);