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) 129 130 extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count, 131 int io); 132 extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd); 133 134 #endif /* !_W1_DS2781_H */ 135