drivers/w1/slaves/w1_ds2780.h

   1 /*
   2  * 1-Wire implementation for the ds2780 chip
   3  *
   4  * Copyright (C) 2010 Indesign, LLC
   5  *
   6  * Author: Clifton Barnes <cabarnes@indesign-llc.com>
   7  *
   8  * Based on w1-ds2760 driver
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  */
  15
  16 #ifndef _W1_DS2780_H
  17 #define _W1_DS2780_H
  18
  19 /* Function commands */
  20 #define W1_DS2780_READ_DATA             0x69
  21 #define W1_DS2780_WRITE_DATA            0x6C
  22 #define W1_DS2780_COPY_DATA             0x48
  23 #define W1_DS2780_RECALL_DATA           0xB8
  24 #define W1_DS2780_LOCK                  0x6A
  25
  26 /* Register map */
  27 /* Register 0x00 Reserved */
  28 #define DS2780_STATUS_REG               0x01
  29 #define DS2780_RAAC_MSB_REG             0x02
  30 #define DS2780_RAAC_LSB_REG             0x03
  31 #define DS2780_RSAC_MSB_REG             0x04
  32 #define DS2780_RSAC_LSB_REG             0x05
  33 #define DS2780_RARC_REG                 0x06
  34 #define DS2780_RSRC_REG                 0x07
  35 #define DS2780_IAVG_MSB_REG             0x08
  36 #define DS2780_IAVG_LSB_REG             0x09
  37 #define DS2780_TEMP_MSB_REG             0x0A
  38 #define DS2780_TEMP_LSB_REG             0x0B
  39 #define DS2780_VOLT_MSB_REG             0x0C
  40 #define DS2780_VOLT_LSB_REG             0x0D
  41 #define DS2780_CURRENT_MSB_REG          0x0E
  42 #define DS2780_CURRENT_LSB_REG          0x0F
  43 #define DS2780_ACR_MSB_REG              0x10
  44 #define DS2780_ACR_LSB_REG              0x11
  45 #define DS2780_ACRL_MSB_REG             0x12
  46 #define DS2780_ACRL_LSB_REG             0x13
  47 #define DS2780_AS_REG                   0x14
  48 #define DS2780_SFR_REG                  0x15
  49 #define DS2780_FULL_MSB_REG             0x16
  50 #define DS2780_FULL_LSB_REG             0x17
  51 #define DS2780_AE_MSB_REG               0x18
  52 #define DS2780_AE_LSB_REG               0x19
  53 #define DS2780_SE_MSB_REG               0x1A
  54 #define DS2780_SE_LSB_REG               0x1B
  55 /* Register 0x1C - 0x1E Reserved */
  56 #define DS2780_EEPROM_REG               0x1F
  57 #define DS2780_EEPROM_BLOCK0_START      0x20
  58 /* Register 0x20 - 0x2F User EEPROM */
  59 #define DS2780_EEPROM_BLOCK0_END        0x2F
  60 /* Register 0x30 - 0x5F Reserved */
  61 #define DS2780_EEPROM_BLOCK1_START      0x60
  62 #define DS2780_CONTROL_REG              0x60
  63 #define DS2780_AB_REG                   0x61
  64 #define DS2780_AC_MSB_REG               0x62
  65 #define DS2780_AC_LSB_REG               0x63
  66 #define DS2780_VCHG_REG                 0x64
  67 #define DS2780_IMIN_REG                 0x65
  68 #define DS2780_VAE_REG                  0x66
  69 #define DS2780_IAE_REG                  0x67
  70 #define DS2780_AE_40_REG                0x68
  71 #define DS2780_RSNSP_REG                0x69
  72 #define DS2780_FULL_40_MSB_REG          0x6A
  73 #define DS2780_FULL_40_LSB_REG          0x6B
  74 #define DS2780_FULL_3040_SLOPE_REG      0x6C
  75 #define DS2780_FULL_2030_SLOPE_REG      0x6D
  76 #define DS2780_FULL_1020_SLOPE_REG      0x6E
  77 #define DS2780_FULL_0010_SLOPE_REG      0x6F
  78 #define DS2780_AE_3040_SLOPE_REG        0x70
  79 #define DS2780_AE_2030_SLOPE_REG        0x71
  80 #define DS2780_AE_1020_SLOPE_REG        0x72
  81 #define DS2780_AE_0010_SLOPE_REG        0x73
  82 #define DS2780_SE_3040_SLOPE_REG        0x74
  83 #define DS2780_SE_2030_SLOPE_REG        0x75
  84 #define DS2780_SE_1020_SLOPE_REG        0x76
  85 #define DS2780_SE_0010_SLOPE_REG        0x77
  86 #define DS2780_RSGAIN_MSB_REG           0x78
  87 #define DS2780_RSGAIN_LSB_REG           0x79
  88 #define DS2780_RSTC_REG                 0x7A
  89 #define DS2780_FRSGAIN_MSB_REG          0x7B
  90 #define DS2780_FRSGAIN_LSB_REG          0x7C
  91 #define DS2780_EEPROM_BLOCK1_END        0x7C
  92 /* Register 0x7D - 0xFF Reserved */
  93
  94 /* Number of valid register addresses */
  95 #define DS2780_DATA_SIZE                0x80
  96
  97 /* Status register bits */
  98 #define DS2780_STATUS_REG_CHGTF         (1 << 7)
  99 #define DS2780_STATUS_REG_AEF           (1 << 6)
 100 #define DS2780_STATUS_REG_SEF           (1 << 5)
 101 #define DS2780_STATUS_REG_LEARNF        (1 << 4)
 102 /* Bit 3 Reserved */
 103 #define DS2780_STATUS_REG_UVF           (1 << 2)
 104 #define DS2780_STATUS_REG_PORF          (1 << 1)
 105 /* Bit 0 Reserved */
 106
 107 /* Control register bits */
 108 /* Bit 7 Reserved */
 109 #define DS2780_CONTROL_REG_UVEN         (1 << 6)
 110 #define DS2780_CONTROL_REG_PMOD         (1 << 5)
 111 #define DS2780_CONTROL_REG_RNAOP        (1 << 4)
 112 /* Bit 0 - 3 Reserved */
 113
 114 /* Special feature register bits */
 115 /* Bit 1 - 7 Reserved */
 116 #define DS2780_SFR_REG_PIOSC            (1 << 0)
 117
 118 /* EEPROM register bits */
 119 #define DS2780_EEPROM_REG_EEC           (1 << 7)
 120 #define DS2780_EEPROM_REG_LOCK          (1 << 6)
 121 /* Bit 2 - 6 Reserved */
 122 #define DS2780_EEPROM_REG_BL1           (1 << 1)
 123 #define DS2780_EEPROM_REG_BL0           (1 << 0)
 124
 125 extern int w1_ds2780_io(struct device *dev, char *buf, int addr, size_t count,
 126                         int io);
 127 extern int w1_ds2780_io_nolock(struct device *dev, char *buf, int addr,
 128                         size_t count, int io);
 129 extern int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd);
 130
 131 #endif /* !_W1_DS2780_H */