arch/xtensa/include/asm/gpio.h

   1 /*
   2  * Generic GPIO API implementation for xtensa.
   3  *
   4  * Stolen from x86, which is derived from the generic GPIO API for powerpc:
   5  *
   6  * Copyright (c) 2007-2008  MontaVista Software, Inc.
   7  *
   8  * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  */
  15
  16 #ifndef _ASM_XTENSA_GPIO_H
  17 #define _ASM_XTENSA_GPIO_H
  18
  19 #include <asm-generic/gpio.h>
  20
  21 #ifdef CONFIG_GPIOLIB
  22
  23 /*
  24  * Just call gpiolib.
  25  */
  26 static inline int gpio_get_value(unsigned int gpio)
  27 {
  28         return __gpio_get_value(gpio);
  29 }
  30
  31 static inline void gpio_set_value(unsigned int gpio, int value)
  32 {
  33         __gpio_set_value(gpio, value);
  34 }
  35
  36 static inline int gpio_cansleep(unsigned int gpio)
  37 {
  38         return __gpio_cansleep(gpio);
  39 }
  40
  41 static inline int gpio_to_irq(unsigned int gpio)
  42 {
  43         return __gpio_to_irq(gpio);
  44 }
  45
  46 /*
  47  * Not implemented, yet.
  48  */
  49 static inline int irq_to_gpio(unsigned int irq)
  50 {
  51         return -EINVAL;
  52 }
  53
  54 #endif /* CONFIG_GPIOLIB */
  55
  56 #endif /* _ASM_XTENSA_GPIO_H */