1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * I2C Driver for Atmel ATSHA204 over I2C 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 2014 Josh Datko, Cryptotronix, jbd@cryptotronix.com 5*4882a593Smuzhiyun * 2016 Tomas Hlavacek, CZ.NIC, tmshlvck@gmail.com 6*4882a593Smuzhiyun * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it 9*4882a593Smuzhiyun * under the terms of the GNU General Public License version 2 as 10*4882a593Smuzhiyun * published by the Free Software Foundation. 11*4882a593Smuzhiyun */ 12*4882a593Smuzhiyun #ifndef _ATSHA204_I2C_H_ 13*4882a593Smuzhiyun #define _ATSHA204_I2C_H_ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun enum atsha204a_zone 16*4882a593Smuzhiyun { 17*4882a593Smuzhiyun ATSHA204A_ZONE_CONFIG = 0, 18*4882a593Smuzhiyun ATSHA204A_ZONE_OTP = 1, 19*4882a593Smuzhiyun ATSHA204A_ZONE_DATA = 2, 20*4882a593Smuzhiyun }; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun enum atsha204a_status 23*4882a593Smuzhiyun { 24*4882a593Smuzhiyun ATSHA204A_STATUS_SUCCESS = 0x00, 25*4882a593Smuzhiyun ATSHA204A_STATUS_MISCOMPARE = 0x01, 26*4882a593Smuzhiyun ATSHA204A_STATUS_PARSE_ERROR = 0x03, 27*4882a593Smuzhiyun ATSHA204A_STATUS_EXEC_ERROR = 0x0F, 28*4882a593Smuzhiyun ATSHA204A_STATUS_AFTER_WAKE = 0x11, 29*4882a593Smuzhiyun ATSHA204A_STATUS_CRC_ERROR = 0xFF, 30*4882a593Smuzhiyun }; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun enum atsha204a_func 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun ATSHA204A_FUNC_RESET = 0x00, 35*4882a593Smuzhiyun ATSHA204A_FUNC_SLEEP = 0x01, 36*4882a593Smuzhiyun ATSHA204A_FUNC_IDLE = 0x02, 37*4882a593Smuzhiyun ATSHA204A_FUNC_COMMAND = 0x03, 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun enum atsha204a_cmd 41*4882a593Smuzhiyun { 42*4882a593Smuzhiyun ATSHA204A_CMD_READ = 0x02, 43*4882a593Smuzhiyun ATSHA204A_CMD_RANDOM = 0x1B, 44*4882a593Smuzhiyun }; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun struct atsha204a_resp 47*4882a593Smuzhiyun { 48*4882a593Smuzhiyun u8 length; 49*4882a593Smuzhiyun u8 code; 50*4882a593Smuzhiyun u8 data[82]; 51*4882a593Smuzhiyun } __attribute__ ((packed)); 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun struct atsha204a_req 54*4882a593Smuzhiyun { 55*4882a593Smuzhiyun u8 function; 56*4882a593Smuzhiyun u8 length; 57*4882a593Smuzhiyun u8 command; 58*4882a593Smuzhiyun u8 param1; 59*4882a593Smuzhiyun u16 param2; 60*4882a593Smuzhiyun u8 data[78]; 61*4882a593Smuzhiyun } __attribute__ ((packed)); 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun int atsha204a_wakeup(struct udevice *); 64*4882a593Smuzhiyun int atsha204a_idle(struct udevice *); 65*4882a593Smuzhiyun int atsha204a_sleep(struct udevice *); 66*4882a593Smuzhiyun int atsha204a_read(struct udevice *, enum atsha204a_zone, bool, u16, u8 *); 67*4882a593Smuzhiyun int atsha204a_get_random(struct udevice *, u8 *, size_t); 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #endif /* _ATSHA204_I2C_H_ */ 70