| /* |
| * 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 Behún, CZ.NIC, kabel@kernel.org |
| * |
| * 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_ */ |
