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kernel/linux-imx6_3.14.28/include/uapi/linux/ppdev.h 3.07 KB
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  /*
   * linux/include/linux/ppdev.h
   *
   * User-space parallel port device driver (header file).
   *
   * Copyright (C) 1998-9 Tim Waugh <tim@cyberelk.demon.co.uk>
   *
   * 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.
   *
   * Added PPGETTIME/PPSETTIME, Fred Barnes, 1999
   * Added PPGETMODES/PPGETMODE/PPGETPHASE, Fred Barnes <frmb2@ukc.ac.uk>, 03/01/2001
   */
  
  #define PP_IOCTL	'p'
  
  /* Set mode for read/write (e.g. IEEE1284_MODE_EPP) */
  #define PPSETMODE	_IOW(PP_IOCTL, 0x80, int)
  
  /* Read status */
  #define PPRSTATUS	_IOR(PP_IOCTL, 0x81, unsigned char)
  #define PPWSTATUS	OBSOLETE__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)
  
  struct ppdev_frob_struct {
  	unsigned char mask;
  	unsigned char val;
  };
  #define PPFCONTROL      _IOW(PP_IOCTL, 0x8e, struct ppdev_frob_struct)
  
  /* Read/write data */
  #define PPRDATA		_IOR(PP_IOCTL, 0x85, unsigned char)
  #define PPWDATA		_IOW(PP_IOCTL, 0x86, unsigned char)
  
  /* Read/write econtrol (not used) */
  #define PPRECONTROL	OBSOLETE__IOR(PP_IOCTL, 0x87, unsigned char)
  #define PPWECONTROL	OBSOLETE__IOW(PP_IOCTL, 0x88, unsigned char)
  
  /* Read/write FIFO (not used) */
  #define PPRFIFO		OBSOLETE__IOR(PP_IOCTL, 0x89, unsigned char)
  #define PPWFIFO		OBSOLETE__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)
  
  /* Register device exclusively (must be before PPCLAIM). */
  #define PPEXCL		_IO(PP_IOCTL, 0x8f)
  
  /* Data line direction: non-zero for input mode. */
  #define PPDATADIR	_IOW(PP_IOCTL, 0x90, int)
  
  /* Negotiate a particular IEEE 1284 mode. */
  #define PPNEGOT		_IOW(PP_IOCTL, 0x91, int)
  
  /* Set control lines when an interrupt occurs. */
  #define PPWCTLONIRQ	_IOW(PP_IOCTL, 0x92, unsigned char)
  
  /* Clear (and return) interrupt count. */
  #define PPCLRIRQ	_IOR(PP_IOCTL, 0x93, int)
  
  /* Set the IEEE 1284 phase that we're in (e.g. IEEE1284_PH_FWD_IDLE) */
  #define PPSETPHASE	_IOW(PP_IOCTL, 0x94, int)
  
  /* Set and get port timeout (struct timeval's) */
  #define PPGETTIME	_IOR(PP_IOCTL, 0x95, struct timeval)
  #define PPSETTIME	_IOW(PP_IOCTL, 0x96, struct timeval)
  
  /* Get available modes (what the hardware can do) */
  #define PPGETMODES	_IOR(PP_IOCTL, 0x97, unsigned int)
  
  /* Get the current mode and phaze */
  #define PPGETMODE	_IOR(PP_IOCTL, 0x98, int)
  #define PPGETPHASE	_IOR(PP_IOCTL, 0x99, int)
  
  /* get/set flags */
  #define PPGETFLAGS	_IOR(PP_IOCTL, 0x9a, int)
  #define PPSETFLAGS	_IOW(PP_IOCTL, 0x9b, int)
  
  /* flags visible to the world */
  #define PP_FASTWRITE	(1<<2)
  #define PP_FASTREAD	(1<<3)
  #define PP_W91284PIC	(1<<4)
  
  /* only masks user-visible flags */
  #define PP_FLAGMASK	(PP_FASTWRITE | PP_FASTREAD | PP_W91284PIC)