123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 |
- /*
- * I2C Driver for Atmel ATSHA204 over I2C
- *
- * Copyright (C) 2014 Josh Datko, Cryptotronix, jbd@cryptotronix.com
- * 2016 Tomas Hlavacek, CZ.NIC, tmshlvck@gmail.com
- * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #ifndef _ATSHA204_I2C_H_
- #define _ATSHA204_I2C_H_
- enum atsha204a_zone
- {
- ATSHA204A_ZONE_CONFIG = 0,
- ATSHA204A_ZONE_OTP = 1,
- ATSHA204A_ZONE_DATA = 2,
- };
- enum atsha204a_status
- {
- ATSHA204A_STATUS_SUCCESS = 0x00,
- ATSHA204A_STATUS_MISCOMPARE = 0x01,
- ATSHA204A_STATUS_PARSE_ERROR = 0x03,
- ATSHA204A_STATUS_EXEC_ERROR = 0x0F,
- ATSHA204A_STATUS_AFTER_WAKE = 0x11,
- ATSHA204A_STATUS_CRC_ERROR = 0xFF,
- };
- enum atsha204a_func
- {
- ATSHA204A_FUNC_RESET = 0x00,
- ATSHA204A_FUNC_SLEEP = 0x01,
- ATSHA204A_FUNC_IDLE = 0x02,
- ATSHA204A_FUNC_COMMAND = 0x03,
- };
- enum atsha204a_cmd
- {
- ATSHA204A_CMD_READ = 0x02,
- ATSHA204A_CMD_RANDOM = 0x1B,
- };
- struct atsha204a_resp
- {
- u8 length;
- u8 code;
- u8 data[82];
- } __attribute__ ((packed));
- struct atsha204a_req
- {
- u8 function;
- u8 length;
- u8 command;
- u8 param1;
- u16 param2;
- u8 data[78];
- } __attribute__ ((packed));
- int atsha204a_wakeup(struct udevice *);
- int atsha204a_idle(struct udevice *);
- int atsha204a_sleep(struct udevice *);
- int atsha204a_read(struct udevice *, enum atsha204a_zone, bool, u16, u8 *);
- int atsha204a_get_random(struct udevice *, u8 *, size_t);
- #endif /* _ATSHA204_I2C_H_ */
|