LXR linux/arch/arm/mach-s3c2400/gpio.c

   1/* linux/arch/arm/mach-s3c2400/gpio.c
   2 *
   3 * Copyright (c) 2006 Lucas Correia Villa Real <lucasvr@gobolinux.org>
   4 *
   5 * S3C2400 GPIO support
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20*/
  21
  22#include <linux/kernel.h>
  23#include <linux/init.h>
  24#include <linux/module.h>
  25#include <linux/interrupt.h>
  26#include <linux/ioport.h>
  27
  28#include <mach/hardware.h>
  29#include <asm/irq.h>
  30#include <asm/io.h>
  31
  32#include <mach/regs-gpio.h>
  33
  34int s3c2400_gpio_getirq(unsigned int pin)
  35{
  36        if (pin < S3C2410_GPE0 || pin > S3C2400_GPE7_EINT7)
  37                return -1;  /* not valid interrupts */
  38
  39        return (pin - S3C2410_GPE0) + IRQ_EINT0;
  40}
  41
  42EXPORT_SYMBOL(s3c2400_gpio_getirq);
  43