chardev.h

linux下hpi口驱动程序

/*
 * linux/drivers/char/hpi.h
 *
 * Copyright (C) 1995 - 1998 Russell King
 *
 * Prototypes for generic busmouse interface
 */
#ifndef CHARDEV_H
#define CHARDEV_H

#include <linux/ioctl.h>
#define MAJOR_NUM  231
/*#define IOCTL_INC    _IOWR(MAJOR_NUM,0,unsigned int )
#define IOCTL_FIX    _IOWR(MAJOR_NUM,1,unsigned int )
#define IOCTL_READ_ADDR  _IOWR(MAJOR_NUM,2,unsigned int )
#define IOCTL_READ_CTRL  _IOWR(MAJOR_NUM,3,unsigned int )
*/
#endif