V4L2_CTRL_CLASS_FLASH  798 include/uapi/linux/v4l2-controls.h #define V4L2_CID_FLASH_CLASS_BASE		(V4L2_CTRL_CLASS_FLASH | 0x900)
V4L2_CTRL_CLASS_FLASH  799 include/uapi/linux/v4l2-controls.h #define V4L2_CID_FLASH_CLASS			(V4L2_CTRL_CLASS_FLASH | 1)