#ifndef _SPARC_BPP_H
  #define _SPARC_BPP_H
  
  /*
   * Copyright (c) 1995 Picture Elements
   *	Stephen Williams
   *	Gus Baldauf
   *
   * Linux/SPARC port by Peter Zaitcev.
   * Integration into SPARC tree by Tom Dyas.
   */
  
  #include  <linux/ioctl.h>
  
  /*
   * This is a driver that supports IEEE Std 1284-1994 communications
   * with compliant or compatible devices. It will use whatever features
   * the device supports, prefering those that are typically faster.
   *
   * When the device is opened, it is left in COMPATABILITY mode, and
   * writes work like any printer device. The driver only attempt to
   * negotiate 1284 modes when needed so that plugs can be pulled,
   * switch boxes switched, etc., without disrupting things. It will
   * also leave the device in compatibility mode when closed.
   */
  
  
  
  /*
   * This driver also supplies ioctls to manually manipulate the
   * pins. This is great for testing devices, or writing code to deal
   * with bizzarro-mode of the ACME Special TurboThingy Plus.
   *
   * NOTE: These ioctl currently do not interact well with
   * read/write. Caveat emptor.
   *
   * PUT_PINS allows us to assign the sense of all the pins, including
   * the data pins if being driven by the host. The GET_PINS returns the
   * pins that the peripheral drives, including data if appropriate.
   */
  
  # define BPP_PUT_PINS _IOW('B', 1, int)
  # define BPP_GET_PINS _IOR('B', 2, char) /* that's bogus - should've been _IO */
  # define BPP_PUT_DATA _IOW('B', 3, int)
  # define BPP_GET_DATA _IOR('B', 4, char) /* ditto */
  
  /*
   * Set the data bus to input mode. Disengage the data bin driver and
   * be prepared to read values from the peripheral. If the arg is 0,
   * then revert the bus to output mode.
   */
  # define BPP_SET_INPUT _IOW('B', 5, int)
  
  /*
   * These bits apply to the PUT operation...
   */
  # define BPP_PP_nStrobe   0x0001
  # define BPP_PP_nAutoFd   0x0002
  # define BPP_PP_nInit     0x0004
  # define BPP_PP_nSelectIn 0x0008
  
  /*
   * These apply to the GET operation, which also reads the current value
   * of the previously put values. A bit mask of these will be returned
   * as a bit mask in the return code of the ioctl().
   */
  # define BPP_GP_nAck   0x0100
  # define BPP_GP_Busy   0x0200
  # define BPP_GP_PError 0x0400
  # define BPP_GP_Select 0x0800
  # define BPP_GP_nFault 0x1000
  
  #endif