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// SPDX-License-Identifier: Apache-2.0
/* Copyright 2013-2014 Google Corp. */
/**
* @file gpio.h
*
* @brief Public interface of the EC GPIO device driver
*
*/
#ifndef __EC_GPIO_H_
#define __EC_GPIO_H_
#ifdef __cplusplus
extern "C" {
#endif
#define EC_GPIO_INPUT 0
#define EC_GPIO_OUTPUT 1
#define EC_GPIO_PULLUP_DISABLE 0
#define EC_GPIO_PULLUP_ENABLE 1
// Sets up a GPIO as output or input.
// Returns: <0 on error
int ec_gpio_setup(EcGpioPort port, uint8_t pin,
int is_output, int pullup_enable);
// Reads the current value of an input GPIO.
// Returns: GPIO value (0,1) or <0 on error.
int ec_gpio_read(EcGpioPort port, uint8_t pin);
// Sets the driving value of an output GPIO. Port should already be set
// to output mode.
// Returns: <0 on error
int ec_gpio_set(EcGpioPort port, uint8_t pin, int val);
#ifdef __cplusplus
}
#endif
#endif // __EC_GPIO_H_
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