board/adsvix/pcmcia.c

   1 /*
   2  * (C) Copyright 2004
   3  * Robert Whaley, Applied Data Systems, Inc. rwhaley@applieddata.net
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <asm/arch/pxa-regs.h>
  26
  27 void pcmcia_power_on(void)
  28 {
  29 #if 0
  30         if (!(GPLR(20) & GPIO_bit(20))) { /* 3.3V */
  31                 GPCR(81) = GPIO_bit(81);
  32                 GPSR(82) = GPIO_bit(82);
  33         }
  34         else if (!(GPLR(21) & GPIO_bit(21))) { /* 5.0V */
  35                 GPCR(81) = GPIO_bit(81);
  36                 GPCR(82) = GPIO_bit(82);
  37         }
  38 #else
  39 #warning "Board will only supply 5V, wait for next HW spin for selectable power"
  40         /* 5.0V */
  41         GPCR(81) = GPIO_bit(81);
  42         GPCR(82) = GPIO_bit(82);
  43 #endif
  44
  45         udelay(300000);
  46
  47         /* reset the card */
  48         GPSR(52) = GPIO_bit(52);
  49
  50         /* enable PCMCIA */
  51         GPCR(83) = GPIO_bit(83);
  52
  53         /* clear reset */
  54         udelay(10);
  55         GPCR(52) = GPIO_bit(52);
  56
  57         udelay(20000);
  58 }
  59
  60 void pcmcia_power_off(void)
  61 {
  62         /* 0V */
  63         GPSR(81) = GPIO_bit(81);
  64         GPSR(82) = GPIO_bit(82);
  65         /* disable PCMCIA */
  66         GPSR(83) = GPIO_bit(83);
  67 }