| /* | |
| * 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_ */ |