V4L2_CTRL_CLASS_CAMERA 642 include/uapi/linux/v4l2-controls.h #define V4L2_CID_CAMERA_CLASS_BASE (V4L2_CTRL_CLASS_CAMERA | 0x900) V4L2_CTRL_CLASS_CAMERA 643 include/uapi/linux/v4l2-controls.h #define V4L2_CID_CAMERA_CLASS (V4L2_CTRL_CLASS_CAMERA | 1)