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/*
*
* arch/arm/mach-u300/include/mach/gpio.h
*
*
* Copyright (C) 2007-2009 ST-Ericsson AB
* License terms: GNU General Public License (GPL) version 2
* GPIO block resgister definitions and inline macros for
* U300 GPIO COH 901 335 or COH 901 571/3
* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
#ifndef __MACH_U300_GPIO_H
#define __MACH_U300_GPIO_H
#define __ARM_GPIOLIB_COMPLEX
/* These can be found in arch/arm/mach-u300/gpio.c */
extern int gpio_is_valid(int number);
extern int gpio_request(unsigned gpio, const char *label);
extern void gpio_free(unsigned gpio);
extern int gpio_direction_input(unsigned gpio);
extern int gpio_direction_output(unsigned gpio, int value);
extern int gpio_register_callback(unsigned gpio,
int (*func)(void *arg),
void *);
extern int gpio_unregister_callback(unsigned gpio);
extern void enable_irq_on_gpio_pin(unsigned gpio, int edge);
extern void disable_irq_on_gpio_pin(unsigned gpio);
extern void gpio_pullup(unsigned gpio, int value);
extern int gpio_get_value(unsigned gpio);
extern void gpio_set_value(unsigned gpio, int value);
#define gpio_get_value_cansleep gpio_get_value
#define gpio_set_value_cansleep gpio_set_value
/* translates a pin number to a port number */
#define PIN_TO_PORT(val) (val >> 3)
/* wrappers to sleep-enable the previous two functions */
static inline unsigned gpio_to_irq(unsigned gpio)
{
return PIN_TO_PORT(gpio) + IRQ_U300_GPIO_PORT0;
}
#define gpio_to_irq gpio_to_irq
static inline unsigned irq_to_gpio(unsigned irq)
{
/*
* FIXME: This is no 1-1 mapping at all, it points to the
* whole block of 8 pins.
*/
return (irq - IRQ_U300_GPIO_PORT0) << 3;
}
#endif /* __MACH_U300_GPIO_H */
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