1*1ffecc24SHaojian Zhuang /* 2*1ffecc24SHaojian Zhuang * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3*1ffecc24SHaojian Zhuang * 4*1ffecc24SHaojian Zhuang * Redistribution and use in source and binary forms, with or without 5*1ffecc24SHaojian Zhuang * modification, are permitted provided that the following conditions are met: 6*1ffecc24SHaojian Zhuang * 7*1ffecc24SHaojian Zhuang * Redistributions of source code must retain the above copyright notice, this 8*1ffecc24SHaojian Zhuang * list of conditions and the following disclaimer. 9*1ffecc24SHaojian Zhuang * 10*1ffecc24SHaojian Zhuang * Redistributions in binary form must reproduce the above copyright notice, 11*1ffecc24SHaojian Zhuang * this list of conditions and the following disclaimer in the documentation 12*1ffecc24SHaojian Zhuang * and/or other materials provided with the distribution. 13*1ffecc24SHaojian Zhuang * 14*1ffecc24SHaojian Zhuang * Neither the name of ARM nor the names of its contributors may be used 15*1ffecc24SHaojian Zhuang * to endorse or promote products derived from this software without specific 16*1ffecc24SHaojian Zhuang * prior written permission. 17*1ffecc24SHaojian Zhuang * 18*1ffecc24SHaojian Zhuang * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19*1ffecc24SHaojian Zhuang * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*1ffecc24SHaojian Zhuang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*1ffecc24SHaojian Zhuang * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22*1ffecc24SHaojian Zhuang * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23*1ffecc24SHaojian Zhuang * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24*1ffecc24SHaojian Zhuang * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25*1ffecc24SHaojian Zhuang * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26*1ffecc24SHaojian Zhuang * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27*1ffecc24SHaojian Zhuang * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28*1ffecc24SHaojian Zhuang * POSSIBILITY OF SUCH DAMAGE. 29*1ffecc24SHaojian Zhuang */ 30*1ffecc24SHaojian Zhuang 31*1ffecc24SHaojian Zhuang #ifndef __GPIO_H__ 32*1ffecc24SHaojian Zhuang #define __GPIO_H__ 33*1ffecc24SHaojian Zhuang 34*1ffecc24SHaojian Zhuang #define GPIO_DIR_OUT 0 35*1ffecc24SHaojian Zhuang #define GPIO_DIR_IN 1 36*1ffecc24SHaojian Zhuang 37*1ffecc24SHaojian Zhuang #define GPIO_LEVEL_LOW 0 38*1ffecc24SHaojian Zhuang #define GPIO_LEVEL_HIGH 1 39*1ffecc24SHaojian Zhuang 40*1ffecc24SHaojian Zhuang typedef struct gpio_ops { 41*1ffecc24SHaojian Zhuang int (*get_direction)(int gpio); 42*1ffecc24SHaojian Zhuang void (*set_direction)(int gpio, int direction); 43*1ffecc24SHaojian Zhuang int (*get_value)(int gpio); 44*1ffecc24SHaojian Zhuang void (*set_value)(int gpio, int value); 45*1ffecc24SHaojian Zhuang } gpio_ops_t; 46*1ffecc24SHaojian Zhuang 47*1ffecc24SHaojian Zhuang int gpio_get_direction(int gpio); 48*1ffecc24SHaojian Zhuang void gpio_set_direction(int gpio, int direction); 49*1ffecc24SHaojian Zhuang int gpio_get_value(int gpio); 50*1ffecc24SHaojian Zhuang void gpio_set_value(int gpio, int value); 51*1ffecc24SHaojian Zhuang void gpio_init(const gpio_ops_t *ops); 52*1ffecc24SHaojian Zhuang 53*1ffecc24SHaojian Zhuang #endif /* __GPIO_H__ */ 54