release/src-rt-6.x.4708/linux/linux-2.6.36/arch/microblaze/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_MICROBLAZE_GPIO_H
  15 #define _ASM_MICROBLAZE_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  */
  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 /*
  42  * Not implemented, yet.
  43  */
  44 static inline int gpio_to_irq(unsigned int gpio)
  45 {
  46         return -ENOSYS;
  47 }
  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_MICROBLAZE_GPIO_H */