sys/arch/evbarm/stand/board/smdk2410_io_init.c

   1 /* $NetBSD: smdk2410_io_init.c,v 1.1.4.3 2004/09/21 13:14:53 skrll Exp $ */
   2
   3 /*
   4  * Copyright (c) 2003 By Noon Software, Inc.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The names of the authors may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29
  30 #include <arm/s3c2xx0/s3c2410reg.h>
  31
  32 #define IOW(a, d)       (*(volatile unsigned int *)(a) = (d))
  33 #define IOR(a)          (*(volatile unsigned int *)(a))
  34
  35 void smdk2410_io_init(void);
  36
  37 void
  38 smdk2410_io_init(void)
  39 {
  40 #define O       PCON_OUTPUT
  41 #define I       PCON_INPUT
  42 #define A       PCON_ALTFUN
  43 #define _       0
  44 #define _C(b15,b14,b13,b12,b11,b10,b9,b8,b7,b6,b5,b4,b3,b2,b1,b0) \
  45         ((b15<<30)|(b14<<28)|(b13<<26)|(b12<<24)|(b11<<22)|(b10<<20)|(b9<<18)|(b8<<16)|(b7<<14)|(b6<<12)|(b5<<10)|(b4<<8)|(b3<<6)|(b2<<4)|(b1<<2)|(b0<<0))
  46
  47         /* GPIO port */
  48         IOW(S3C2410_GPIO_BASE+GPIO_PACON, 0x7fffff);
  49         IOW(S3C2410_GPIO_BASE+GPIO_PBCON, _C(_,_,_,_,_,I,O,I,O,I,O,O,O,O,O,O));
  50         IOW(S3C2410_GPIO_BASE+GPIO_PBUP, 0x07ff);
  51         IOW(S3C2410_GPIO_BASE+GPIO_PCCON, _C(A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A));
  52         IOW(S3C2410_GPIO_BASE+GPIO_PCUP, 0xffff);
  53         IOW(S3C2410_GPIO_BASE+GPIO_PDCON, _C(A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A));
  54         IOW(S3C2410_GPIO_BASE+GPIO_PDUP, 0xffff);
  55         IOW(S3C2410_GPIO_BASE+GPIO_PECON, _C(A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A));
  56         IOW(S3C2410_GPIO_BASE+GPIO_PEUP, 0xffff);
  57         IOW(S3C2410_GPIO_BASE+GPIO_PFCON, _C(_,_,_,_,_,_,_,_,O,O,O,O,A,A,A,A));
  58         IOW(S3C2410_GPIO_BASE+GPIO_PFUP, 0x00ff);
  59         IOW(S3C2410_GPIO_BASE+GPIO_PGCON, _C(3,3,3,3,A,O,O,O,3,3,3,3,A,3,A,A));
  60         IOW(S3C2410_GPIO_BASE+GPIO_PGUP, 0xffff);
  61         IOW(S3C2410_GPIO_BASE+GPIO_PHCON, _C(_,_,_,_,_,A,A,A,3,3,A,A,A,A,A,A));
  62         IOW(S3C2410_GPIO_BASE+GPIO_PHUP, 0x07ff);
  63         IOW(S3C2410_GPIO_BASE+GPIO_EXTINT(0), 0x22222222);
  64         IOW(S3C2410_GPIO_BASE+GPIO_EXTINT(1), 0x22222222);
  65         IOW(S3C2410_GPIO_BASE+GPIO_EXTINT(2), 0x22222222);
  66
  67 #undef  O
  68 #undef  I
  69 #undef  A
  70 #undef  _
  71 #undef  _C
  72
  73         /* Interrupt controller */
  74         IOW(S3C2410_INTCTL_BASE+INTCTL_INTMOD, 0);
  75         IOW(S3C2410_INTCTL_BASE+INTCTL_INTMSK, 0);
  76 }