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* cros_ec_dev - expose the Chrome OS Embedded Controller to userspace
* Copyright (C) 2014 Google, Inc.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <>.
#ifndef _CROS_EC_DEV_H_
#define _CROS_EC_DEV_H_
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/mfd/cros_ec.h>
#define CROS_EC_DEV_VERSION "1.0.0"
* @offset: within EC_LPC_ADDR_MEMMAP region
* @bytes: number of bytes to read. zero means "read a string" (including '\0')
* (at most only EC_MEMMAP_SIZE bytes can be read)
* @buffer: where to store the result
* ioctl returns the number of bytes read, negative on error
struct cros_ec_readmem {
uint32_t offset;
uint32_t bytes;
uint8_t buffer[EC_MEMMAP_SIZE];
#define CROS_EC_DEV_IOC 0xEC
#define CROS_EC_DEV_IOCXCMD _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command)
#define CROS_EC_DEV_IOCRDMEM _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem)
/* Lightbar utilities */
extern bool ec_has_lightbar(struct cros_ec_dev *ec);
extern int lb_manual_suspend_ctrl(struct cros_ec_dev *ec, uint8_t enable);
extern int lb_suspend(struct cros_ec_dev *ec);
extern int lb_resume(struct cros_ec_dev *ec);
#endif /* _CROS_EC_DEV_H_ */