LXR linux/include/linux/platform_data/cros_ec

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * ChromeOS EC device interface.
   4 *
   5 * Copyright (C) 2014 Google, Inc.
   6 */
   7
   8#ifndef _UAPI_LINUX_CROS_EC_DEV_H_
   9#define _UAPI_LINUX_CROS_EC_DEV_H_
  10
  11#include <linux/bits.h>
  12#include <linux/ioctl.h>
  13#include <linux/types.h>
  14
  15#include <linux/platform_data/cros_ec_commands.h>
  16
  17#define CROS_EC_DEV_VERSION "1.0.0"
  18
  19/**
  20 * struct cros_ec_readmem - Struct used to read mapped memory.
  21 * @offset: Within EC_LPC_ADDR_MEMMAP region.
  22 * @bytes: Number of bytes to read. Zero means "read a string" (including '\0')
  23 *         At most only EC_MEMMAP_SIZE bytes can be read.
  24 * @buffer: Where to store the result. The ioctl returns the number of bytes
  25 *         read or negative on error.
  26 */
  27struct cros_ec_readmem {
  28        uint32_t offset;
  29        uint32_t bytes;
  30        uint8_t buffer[EC_MEMMAP_SIZE];
  31};
  32
  33#define CROS_EC_DEV_IOC       0xEC
  34#define CROS_EC_DEV_IOCXCMD   _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command)
  35#define CROS_EC_DEV_IOCRDMEM  _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem)
  36#define CROS_EC_DEV_IOCEVENTMASK _IO(CROS_EC_DEV_IOC, 2)
  37
  38#endif /* _CROS_EC_DEV_H_ */
  39