LXR linux/arch/arm/mach-ns9xxx/include/mach/gpio.h

   1/*
   2 * arch/arm/mach-ns9xxx/include/mach/gpio.h
   3 *
   4 * Copyright (C) 2007 by Digi International Inc.
   5 * All rights reserved.
   6 *
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License version 2 as published by
   9 * the Free Software Foundation.
  10*/
  11#ifndef __ASM_ARCH_GPIO_H
  12#define __ASM_ARCH_GPIO_H
  13
  14#include <asm/errno.h>
  15
  16int gpio_request(unsigned gpio, const char *label);
  17
  18void gpio_free(unsigned gpio);
  19
  20int ns9xxx_gpio_configure(unsigned gpio, int inv, int func);
  21
  22int gpio_direction_input(unsigned gpio);
  23
  24int gpio_direction_output(unsigned gpio, int value);
  25
  26int gpio_get_value(unsigned gpio);
  27
  28void gpio_set_value(unsigned gpio, int value);
  29
  30/*
  31 * ns9xxx can use gpio pins to trigger an irq, but it's not generic
  32 * enough to be supported by the gpio_to_irq/irq_to_gpio interface
  33 */
  34static inline int gpio_to_irq(unsigned gpio)
  35{
  36        return -EINVAL;
  37}
  38
  39static inline int irq_to_gpio(unsigned irq)
  40{
  41        return -EINVAL;
  42}
  43
  44/* get the cansleep() stubs */
  45#include <asm-generic/gpio.h>
  46
  47#endif /* ifndef __ASM_ARCH_GPIO_H */
  48