sys/arch/powerpc/ibm4xx/dev/gpioreg.h

   1 /*      $NetBSD: gpioreg.h,v 1.3 2005/12/11 12:18:42 christos Exp $     */
   2
   3 /*
   4  * Copyright 2001 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Simon Burge and Eduardo Horvath for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #ifndef _IBM4XX_GPIOREG_H_
  39 #define _IBM4XX_GPIOREG_H_
  40
  41 /*
  42  * GPIO Registers
  43  */
  44
  45 /*
  46  * GPIO ODR Control Logic:
  47  *      ODR     OR      Out     TCR     TS_Ctrl Module I/O 3-State Driver
  48  *      0       X       X       0       0       Forced to high impedance state
  49  *      0       0       0       1       1       Drive 0
  50  *      0       1       1       1       1       Drive 1
  51  *      1       0       0       X       1       Drive 0
  52  *      1       1       0       X       0       Forced to high impedance state
  53  */
  54
  55 /* GPIO pins */
  56 #define GPIO_NPINS              (24)
  57
  58 /* GPIO Registers 0x00-0x7f */
  59 #define GPIO_NREG               (0x80)
  60
  61 #define GPIO_PIN_SHIFT(n)       (31 - n)
  62
  63 /* Offset */
  64 #define GPIO_OR                 (0x00)  /* Output */
  65 #define GPIO_TCR                (0x04)  /* Three-State Control */
  66 #define GPIO_ODR                (0x18)  /* Open Drain */
  67 #define GPIO_IR                 (0x1c)  /* Input */
  68
  69 #endif  /* _IBM4XX_GPIOREG_H_ */