target/linux/ar71xx/files-2.6.28/arch/mips/include/asm/mach-ar71xx/gpio.h

   1 /*
   2  *  Atheros AR71xx GPIO API definitions
   3  *
   4  *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   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
   9  *  by the Free Software Foundation.
  10  *
  11  */
  12
  13 #ifndef __ASM_MACH_AR71XX_GPIO_H
  14 #define __ASM_MACH_AR71XX_GPIO_H
  15
  16 #define ARCH_NR_GPIOS   64
  17 #include <asm-generic/gpio.h>
  18
  19 #include <asm/mach-ar71xx/ar71xx.h>
  20
  21 extern unsigned long ar71xx_gpio_count;
  22 extern void __ar71xx_gpio_set_value(unsigned gpio, int value);
  23 extern int __ar71xx_gpio_get_value(unsigned gpio);
  24
  25 static inline int gpio_to_irq(unsigned gpio)
  26 {
  27         return AR71XX_GPIO_IRQ(gpio);
  28 }
  29
  30 static inline int irq_to_gpio(unsigned irq)
  31 {
  32         return irq - AR71XX_GPIO_IRQ_BASE;
  33 }
  34
  35 static inline int gpio_get_value(unsigned gpio)
  36 {
  37         if (gpio < ar71xx_gpio_count)
  38                 return __ar71xx_gpio_get_value(gpio);
  39
  40         return __gpio_get_value(gpio);
  41 }
  42
  43 static inline void gpio_set_value(unsigned gpio, int value)
  44 {
  45         if (gpio < ar71xx_gpio_count)
  46                 __ar71xx_gpio_set_value(gpio, value);
  47         else
  48                 __gpio_set_value(gpio, value);
  49 }
  50
  51 #define gpio_cansleep   __gpio_cansleep
  52
  53 #endif /* __ASM_MACH_AR71XX_GPIO_H */