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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2020 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.
#ifndef __MISC_IO_H
#define __MISC_IO_H
#include <zephyr.h>
* @brief Get the board version number.
* Three I/Os on an I2C GPIO expander are tied to power or ground to indicate
* the hardware version number of the board.
* @retval >=0 board version number
* @retval <0 error number returned by `gpio_pin_get`
int misc_io_get_board_version(void);