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
  16 int gpio_request(unsigned gpio, const char *label);
  17
  18 void gpio_free(unsigned gpio);
  19
  20 int ns9xxx_gpio_configure(unsigned gpio, int inv, int func);
  21
  22 int gpio_direction_input(unsigned gpio);
  23
  24 int gpio_direction_output(unsigned gpio, int value);
  25
  26 int gpio_get_value(unsigned gpio);
  27
  28 void 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  */
  34 static inline int gpio_to_irq(unsigned gpio)
  35 {
  36         return -EINVAL;
  37 }
  38
  39 static 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 */