1/* 2 * 1-Wire implementation for the ds2780 chip 3 * 4 * Author: Renata Sayakhova <renata@oktetlabs.ru> 5 * 6 * Based on w1-ds2760 driver 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12 */ 13 14#ifndef _W1_DS2781_H 15#define _W1_DS2781_H 16 17/* Function commands */ 18#define W1_DS2781_READ_DATA 0x69 19#define W1_DS2781_WRITE_DATA 0x6C 20#define W1_DS2781_COPY_DATA 0x48 21#define W1_DS2781_RECALL_DATA 0xB8 22#define W1_DS2781_LOCK 0x6A 23 24/* Register map */ 25/* Register 0x00 Reserved */ 26#define DS2781_STATUS 0x01 27#define DS2781_RAAC_MSB 0x02 28#define DS2781_RAAC_LSB 0x03 29#define DS2781_RSAC_MSB 0x04 30#define DS2781_RSAC_LSB 0x05 31#define DS2781_RARC 0x06 32#define DS2781_RSRC 0x07 33#define DS2781_IAVG_MSB 0x08 34#define DS2781_IAVG_LSB 0x09 35#define DS2781_TEMP_MSB 0x0A 36#define DS2781_TEMP_LSB 0x0B 37#define DS2781_VOLT_MSB 0x0C 38#define DS2781_VOLT_LSB 0x0D 39#define DS2781_CURRENT_MSB 0x0E 40#define DS2781_CURRENT_LSB 0x0F 41#define DS2781_ACR_MSB 0x10 42#define DS2781_ACR_LSB 0x11 43#define DS2781_ACRL_MSB 0x12 44#define DS2781_ACRL_LSB 0x13 45#define DS2781_AS 0x14 46#define DS2781_SFR 0x15 47#define DS2781_FULL_MSB 0x16 48#define DS2781_FULL_LSB 0x17 49#define DS2781_AE_MSB 0x18 50#define DS2781_AE_LSB 0x19 51#define DS2781_SE_MSB 0x1A 52#define DS2781_SE_LSB 0x1B 53/* Register 0x1C - 0x1E Reserved */ 54#define DS2781_EEPROM 0x1F 55#define DS2781_EEPROM_BLOCK0_START 0x20 56/* Register 0x20 - 0x2F User EEPROM */ 57#define DS2781_EEPROM_BLOCK0_END 0x2F 58/* Register 0x30 - 0x5F Reserved */ 59#define DS2781_EEPROM_BLOCK1_START 0x60 60#define DS2781_CONTROL 0x60 61#define DS2781_AB 0x61 62#define DS2781_AC_MSB 0x62 63#define DS2781_AC_LSB 0x63 64#define DS2781_VCHG 0x64 65#define DS2781_IMIN 0x65 66#define DS2781_VAE 0x66 67#define DS2781_IAE 0x67 68#define DS2781_AE_40 0x68 69#define DS2781_RSNSP 0x69 70#define DS2781_FULL_40_MSB 0x6A 71#define DS2781_FULL_40_LSB 0x6B 72#define DS2781_FULL_4_SLOPE 0x6C 73#define DS2781_FULL_3_SLOPE 0x6D 74#define DS2781_FULL_2_SLOPE 0x6E 75#define DS2781_FULL_1_SLOPE 0x6F 76#define DS2781_AE_4_SLOPE 0x70 77#define DS2781_AE_3_SLOPE 0x71 78#define DS2781_AE_2_SLOPE 0x72 79#define DS2781_AE_1_SLOPE 0x73 80#define DS2781_SE_4_SLOPE 0x74 81#define DS2781_SE_3_SLOPE 0x75 82#define DS2781_SE_2_SLOPE 0x76 83#define DS2781_SE_1_SLOPE 0x77 84#define DS2781_RSGAIN_MSB 0x78 85#define DS2781_RSGAIN_LSB 0x79 86#define DS2781_RSTC 0x7A 87#define DS2781_COB 0x7B 88#define DS2781_TBP34 0x7C 89#define DS2781_TBP23 0x7D 90#define DS2781_TBP12 0x7E 91#define DS2781_EEPROM_BLOCK1_END 0x7F 92/* Register 0x7D - 0xFF Reserved */ 93 94#define DS2781_FSGAIN_MSB 0xB0 95#define DS2781_FSGAIN_LSB 0xB1 96 97/* Number of valid register addresses */ 98#define DS2781_DATA_SIZE 0xB2 99 100/* Status register bits */ 101#define DS2781_STATUS_CHGTF (1 << 7) 102#define DS2781_STATUS_AEF (1 << 6) 103#define DS2781_STATUS_SEF (1 << 5) 104#define DS2781_STATUS_LEARNF (1 << 4) 105/* Bit 3 Reserved */ 106#define DS2781_STATUS_UVF (1 << 2) 107#define DS2781_STATUS_PORF (1 << 1) 108/* Bit 0 Reserved */ 109 110/* Control register bits */ 111/* Bit 7 Reserved */ 112#define DS2781_CONTROL_NBEN (1 << 7) 113#define DS2781_CONTROL_UVEN (1 << 6) 114#define DS2781_CONTROL_PMOD (1 << 5) 115#define DS2781_CONTROL_RNAOP (1 << 4) 116#define DS1781_CONTROL_UVTH (1 << 3) 117/* Bit 0 - 2 Reserved */ 118 119/* Special feature register bits */ 120/* Bit 1 - 7 Reserved */ 121#define DS2781_SFR_PIOSC (1 << 0) 122 123/* EEPROM register bits */ 124#define DS2781_EEPROM_EEC (1 << 7) 125#define DS2781_EEPROM_LOCK (1 << 6) 126/* Bit 2 - 6 Reserved */ 127#define DS2781_EEPROM_BL1 (1 << 1) 128#define DS2781_EEPROM_BL0 (1 << 0) 129 130extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count, 131 int io); 132extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd); 133 134#endif /* !_W1_DS2781_H */ 135