ppuser.h

来自「simple MIPS EJTAG u-boot loader」· C头文件 代码 · 共 49 行

/*
 * User-space parallel port device driver (header file).
 *
 * Copyright (C) 1998-9 Tim Waugh <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 *
 */

#define PP_MAJOR	99

#define PP_IOCTL	'p'

/* Set mode for read/write (e.g. PARPORT_MODE_PCEPP) */
#define PPSETMODE	_IOW(PP_IOCTL, 0x80, int)

/* Read/write status */
#define PPRSTATUS	_IOR(PP_IOCTL, 0x81, unsigned char)
#define PPWSTATUS	_IOW(PP_IOCTL, 0x82, unsigned char)

/* Read/write control */
#define PPRCONTROL	_IOR(PP_IOCTL, 0x83, unsigned char)
#define PPWCONTROL	_IOW(PP_IOCTL, 0x84, unsigned char)

/* Read/write data */
#define PPRDATA		_IOR(PP_IOCTL, 0x85, unsigned char)
#define PPWDATA		_IOW(PP_IOCTL, 0x86, unsigned char)

/* Read/write econtrol */
#define PPRECONTROL	_IOR(PP_IOCTL, 0x87, unsigned char)
#define PPWECONTROL	_IOW(PP_IOCTL, 0x88, unsigned char)

/* Read/write FIFO */
#define PPRFIFO		_IOR(PP_IOCTL, 0x89, unsigned char)
#define PPWFIFO		_IOW(PP_IOCTL, 0x8a, unsigned char)

/* Claim the port to start using it */
#define PPCLAIM		_IO(PP_IOCTL, 0x8b)

/* Release the port when you aren't using it */
#define PPRELEASE	_IO(PP_IOCTL, 0x8c)

/* Yield the port (release it if another driver is waiting,
 * then reclaim) */
#define PPYIELD		_IO(PP_IOCTL, 0x8d)