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/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* GPIO module for Chrome EC */
#ifndef __CROS_EC_GPIO_H
#define __CROS_EC_GPIO_H
#include "common.h"
/* GPIO signal definitions. */
enum gpio_signal {
/* Firmware write protect */
EC_GPIO_WRITE_PROTECT = 0,
/* Recovery switch */
EC_GPIO_RECOVERY_SWITCH,
/* Debug LED */
EC_GPIO_DEBUG_LED
};
/* Pre-initializes the module. This occurs before clocks or tasks are
* set up. */
int gpio_pre_init(void);
/* Initializes the GPIO module. */
int gpio_init(void);
/* Functions should return an error if the requested signal is not
* supported / not present on the board. */
/* Gets the current value of a signal (0=low, 1=hi). */
int gpio_get_level(enum gpio_signal signal);
/* Sets the current value of a signal. Returns error if the signal is
* not supported or is an input signal. */
int gpio_set_level(enum gpio_signal signal, int value);
#endif /* __CROS_EC_GPIO_H */
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