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/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __GPIO_H__
#define __GPIO_H__
#define GPIO_DIR_OUT 0
#define GPIO_DIR_IN 1
#define GPIO_LEVEL_LOW 0
#define GPIO_LEVEL_HIGH 1
#define GPIO_PULL_NONE 0
#define GPIO_PULL_UP 1
#define GPIO_PULL_DOWN 2
typedef struct gpio_ops {
int (*get_direction)(int gpio);
void (*set_direction)(int gpio, int direction);
int (*get_value)(int gpio);
void (*set_value)(int gpio, int value);
void (*set_pull)(int gpio, int pull);
int (*get_pull)(int gpio);
} gpio_ops_t;
int gpio_get_direction(int gpio);
void gpio_set_direction(int gpio, int direction);
int gpio_get_value(int gpio);
void gpio_set_value(int gpio, int value);
void gpio_set_pull(int gpio, int pull);
int gpio_get_pull(int gpio);
void gpio_init(const gpio_ops_t *ops);
#endif /* __GPIO_H__ */