arch/arm/mach-u300/include/mach/gpio.h

   1 /*
   2  *
   3  * arch/arm/mach-u300/include/mach/gpio.h
   4  *
   5  *
   6  * Copyright (C) 2007-2009 ST-Ericsson AB
   7  * License terms: GNU General Public License (GPL) version 2
   8  * GPIO block resgister definitions and inline macros for
   9  * U300 GPIO COH 901 335 or COH 901 571/3
  10  * Author: Linus Walleij <linus.walleij@stericsson.com>
  11  */
  12
  13 #ifndef __MACH_U300_GPIO_H
  14 #define __MACH_U300_GPIO_H
  15
  16 #define __ARM_GPIOLIB_COMPLEX
  17
  18 /* These can be found in arch/arm/mach-u300/gpio.c */
  19 extern int gpio_is_valid(int number);
  20 extern int gpio_request(unsigned gpio, const char *label);
  21 extern void gpio_free(unsigned gpio);
  22 extern int gpio_direction_input(unsigned gpio);
  23 extern int gpio_direction_output(unsigned gpio, int value);
  24 extern int gpio_register_callback(unsigned gpio,
  25                                   int (*func)(void *arg),
  26                                   void *);
  27 extern int gpio_unregister_callback(unsigned gpio);
  28 extern void enable_irq_on_gpio_pin(unsigned gpio, int edge);
  29 extern void disable_irq_on_gpio_pin(unsigned gpio);
  30 extern void gpio_pullup(unsigned gpio, int value);
  31 extern int gpio_get_value(unsigned gpio);
  32 extern void gpio_set_value(unsigned gpio, int value);
  33
  34 #define gpio_get_value_cansleep gpio_get_value
  35 #define gpio_set_value_cansleep gpio_set_value
  36
  37 /* translates a pin number to a port number */
  38 #define PIN_TO_PORT(val) (val >> 3)
  39
  40 /* wrappers to sleep-enable the previous two functions */
  41 static inline unsigned gpio_to_irq(unsigned gpio)
  42 {
  43         return PIN_TO_PORT(gpio) + IRQ_U300_GPIO_PORT0;
  44 }
  45 #define gpio_to_irq gpio_to_irq
  46
  47 #endif /* __MACH_U300_GPIO_H */