Viewing file:  cros_ec_chardev.h (1.08 KB) -rw-r--r--
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/* 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 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)
#define CROS_EC_DEV_IOCEVENTMASK _IO(CROS_EC_DEV_IOC, 2)
#endif /* _CROS_EC_DEV_H_ */
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