/* SPDX-License-Identifier: GPL-2.0 */
/*
* ChromeOS EC device interface .
*
* Copyright ( C ) 2014 Google , Inc .
*/
#ifndef _UAPI_LINUX_CROS_EC_DEV_H_
#define _UAPI_LINUX_CROS_EC_DEV_H_
#include <linux/bits.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/platform_data/cros_ec_commands.h>
#define CROS_EC_DEV_VERSION "1.0.0"
/**
* struct cros_ec_readmem - Struct used to read mapped memory .
* @ 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 . The ioctl returns the number of bytes
* read or negative on error .
*/
struct cros_ec_readmem {
uint32_t offset;
uint32_t bytes;
uint8_t buffer[EC_MEMMAP_SIZE];
};
#define CROS_EC_DEV_IOC 0 xEC
#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)
#define CROS_EC_DEV_IOCEVENTMASK _IO(CROS_EC_DEV_IOC, 2 )
#endif /* _CROS_EC_DEV_H_ */
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