V4L2_CTRL_CLASS_DV 887 include/uapi/linux/v4l2-controls.h #define V4L2_CID_DV_CLASS_BASE (V4L2_CTRL_CLASS_DV | 0x900) V4L2_CTRL_CLASS_DV 888 include/uapi/linux/v4l2-controls.h #define V4L2_CID_DV_CLASS (V4L2_CTRL_CLASS_DV | 1)