LXR uboot/include/atsha204a-i2c.h

   1/*
   2 * I2C Driver for Atmel ATSHA204 over I2C
   3 *
   4 * Copyright (C) 2014 Josh Datko, Cryptotronix, jbd@cryptotronix.com
   5 *               2016 Tomas Hlavacek, CZ.NIC, tmshlvck@gmail.com
   6 *               2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
   7 *
   8 * This program is free software; you can redistribute  it and/or modify it
   9 * under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12#ifndef _ATSHA204_I2C_H_
  13#define _ATSHA204_I2C_H_
  14
  15enum atsha204a_zone
  16{
  17        ATSHA204A_ZONE_CONFIG   = 0,
  18        ATSHA204A_ZONE_OTP      = 1,
  19        ATSHA204A_ZONE_DATA     = 2,
  20};
  21
  22enum atsha204a_status
  23{
  24        ATSHA204A_STATUS_SUCCESS        = 0x00,
  25        ATSHA204A_STATUS_MISCOMPARE     = 0x01,
  26        ATSHA204A_STATUS_PARSE_ERROR    = 0x03,
  27        ATSHA204A_STATUS_EXEC_ERROR     = 0x0F,
  28        ATSHA204A_STATUS_AFTER_WAKE     = 0x11,
  29        ATSHA204A_STATUS_CRC_ERROR      = 0xFF,
  30};
  31
  32enum atsha204a_func
  33{
  34        ATSHA204A_FUNC_RESET    = 0x00,
  35        ATSHA204A_FUNC_SLEEP    = 0x01,
  36        ATSHA204A_FUNC_IDLE     = 0x02,
  37        ATSHA204A_FUNC_COMMAND  = 0x03,
  38};
  39
  40enum atsha204a_cmd
  41{
  42        ATSHA204A_CMD_READ      = 0x02,
  43        ATSHA204A_CMD_RANDOM    = 0x1B,
  44};
  45
  46struct atsha204a_resp
  47{
  48        u8 length;
  49        u8 code;
  50        u8 data[82];
  51} __attribute__ ((packed));
  52
  53struct atsha204a_req
  54{
  55        u8 function;
  56        u8 length;
  57        u8 command;
  58        u8 param1;
  59        u16 param2;
  60        u8 data[78];
  61} __attribute__ ((packed));
  62
  63int atsha204a_wakeup(struct udevice *);
  64int atsha204a_idle(struct udevice *);
  65int atsha204a_sleep(struct udevice *);
  66int atsha204a_read(struct udevice *, enum atsha204a_zone, bool, u16, u8 *);
  67int atsha204a_get_random(struct udevice *, u8 *, size_t);
  68
  69#endif /* _ATSHA204_I2C_H_ */
  70