drivers/w1/slaves/w1_ds2781.h

   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 */