LXR linux/arch/powerpc/include/asm/gpio.h

   1/*
   2 * Generic GPIO API implementation for PowerPC.
   3 *
   4 * Copyright (c) 2007-2008  MontaVista Software, Inc.
   5 *
   6 * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 */
  13
  14#ifndef __ASM_POWERPC_GPIO_H
  15#define __ASM_POWERPC_GPIO_H
  16
  17#include <linux/errno.h>
  18#include <asm-generic/gpio.h>
  19
  20#ifdef CONFIG_GPIOLIB
  21
  22/*
  23 * We don't (yet) implement inlined/rapid versions for on-chip gpios.
  24 * Just call gpiolib.
  25 */
  26static inline int gpio_get_value(unsigned int gpio)
  27{
  28        return __gpio_get_value(gpio);
  29}
  30
  31static inline void gpio_set_value(unsigned int gpio, int value)
  32{
  33        __gpio_set_value(gpio, value);
  34}
  35
  36static inline int gpio_cansleep(unsigned int gpio)
  37{
  38        return __gpio_cansleep(gpio);
  39}
  40
  41/*
  42 * Not implemented, yet.
  43 */
  44static inline int gpio_to_irq(unsigned int gpio)
  45{
  46        return -ENOSYS;
  47}
  48
  49static inline int irq_to_gpio(unsigned int irq)
  50{
  51        return -EINVAL;
  52}
  53
  54#endif /* CONFIG_GPIOLIB */
  55
  56#endif /* __ASM_POWERPC_GPIO_H */
  57