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 16int gpio_request(unsigned gpio, const char *label); 17 18void gpio_free(unsigned gpio); 19 20int ns9xxx_gpio_configure(unsigned gpio, int inv, int func); 21 22int gpio_direction_input(unsigned gpio); 23 24int gpio_direction_output(unsigned gpio, int value); 25 26int gpio_get_value(unsigned gpio); 27 28void 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 */ 34static inline int gpio_to_irq(unsigned gpio) 35{ 36 return -EINVAL; 37} 38 39static 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 */ 48