11ffecc24SHaojian Zhuang /* 21ffecc24SHaojian Zhuang * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 31ffecc24SHaojian Zhuang * 41ffecc24SHaojian Zhuang * Redistribution and use in source and binary forms, with or without 51ffecc24SHaojian Zhuang * modification, are permitted provided that the following conditions are met: 61ffecc24SHaojian Zhuang * 71ffecc24SHaojian Zhuang * Redistributions of source code must retain the above copyright notice, this 81ffecc24SHaojian Zhuang * list of conditions and the following disclaimer. 91ffecc24SHaojian Zhuang * 101ffecc24SHaojian Zhuang * Redistributions in binary form must reproduce the above copyright notice, 111ffecc24SHaojian Zhuang * this list of conditions and the following disclaimer in the documentation 121ffecc24SHaojian Zhuang * and/or other materials provided with the distribution. 131ffecc24SHaojian Zhuang * 141ffecc24SHaojian Zhuang * Neither the name of ARM nor the names of its contributors may be used 151ffecc24SHaojian Zhuang * to endorse or promote products derived from this software without specific 161ffecc24SHaojian Zhuang * prior written permission. 171ffecc24SHaojian Zhuang * 181ffecc24SHaojian Zhuang * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 191ffecc24SHaojian Zhuang * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 201ffecc24SHaojian Zhuang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 211ffecc24SHaojian Zhuang * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 221ffecc24SHaojian Zhuang * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 231ffecc24SHaojian Zhuang * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 241ffecc24SHaojian Zhuang * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 251ffecc24SHaojian Zhuang * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 261ffecc24SHaojian Zhuang * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 271ffecc24SHaojian Zhuang * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 281ffecc24SHaojian Zhuang * POSSIBILITY OF SUCH DAMAGE. 291ffecc24SHaojian Zhuang */ 301ffecc24SHaojian Zhuang 311ffecc24SHaojian Zhuang #ifndef __GPIO_H__ 321ffecc24SHaojian Zhuang #define __GPIO_H__ 331ffecc24SHaojian Zhuang 341ffecc24SHaojian Zhuang #define GPIO_DIR_OUT 0 351ffecc24SHaojian Zhuang #define GPIO_DIR_IN 1 361ffecc24SHaojian Zhuang 371ffecc24SHaojian Zhuang #define GPIO_LEVEL_LOW 0 381ffecc24SHaojian Zhuang #define GPIO_LEVEL_HIGH 1 391ffecc24SHaojian Zhuang 40*19588982SCaesar Wang #define GPIO_PULL_NONE 0 41*19588982SCaesar Wang #define GPIO_PULL_UP 1 42*19588982SCaesar Wang #define GPIO_PULL_DOWN 2 43*19588982SCaesar Wang 441ffecc24SHaojian Zhuang typedef struct gpio_ops { 451ffecc24SHaojian Zhuang int (*get_direction)(int gpio); 461ffecc24SHaojian Zhuang void (*set_direction)(int gpio, int direction); 471ffecc24SHaojian Zhuang int (*get_value)(int gpio); 481ffecc24SHaojian Zhuang void (*set_value)(int gpio, int value); 49*19588982SCaesar Wang void (*set_pull)(int gpio, int pull); 50*19588982SCaesar Wang int (*get_pull)(int gpio); 511ffecc24SHaojian Zhuang } gpio_ops_t; 521ffecc24SHaojian Zhuang 531ffecc24SHaojian Zhuang int gpio_get_direction(int gpio); 541ffecc24SHaojian Zhuang void gpio_set_direction(int gpio, int direction); 551ffecc24SHaojian Zhuang int gpio_get_value(int gpio); 561ffecc24SHaojian Zhuang void gpio_set_value(int gpio, int value); 57*19588982SCaesar Wang void gpio_set_pull(int gpio, int pull); 58*19588982SCaesar Wang int gpio_get_pull(int gpio); 591ffecc24SHaojian Zhuang void gpio_init(const gpio_ops_t *ops); 601ffecc24SHaojian Zhuang 611ffecc24SHaojian Zhuang #endif /* __GPIO_H__ */ 62