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   1 /*
   2  * 1-Wire implementation for the ds2760 chip
   3  *
   4  * Copyright © 2004-2005, Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
   5  *
   6  * Use consistent with the GNU GPL is permitted,
   7  * provided that this copyright notice is
   8  * preserved in its entirety in all copies and derived works.
   9  *
  10  */
  11
  12 #ifndef __w1_ds2760_h__
  13 #define __w1_ds2760_h__
  14
  15 /* Known commands to the DS2760 chip */
  16 #define W1_DS2760_SWAP                  0xAA
  17 #define W1_DS2760_READ_DATA             0x69
  18 #define W1_DS2760_WRITE_DATA            0x6C
  19 #define W1_DS2760_COPY_DATA             0x48
  20 #define W1_DS2760_RECALL_DATA           0xB8
  21 #define W1_DS2760_LOCK                  0x6A
  22
  23 /* Number of valid register addresses */
  24 #define DS2760_DATA_SIZE                0x40
  25
  26 #define DS2760_PROTECTION_REG           0x00
  27 #define DS2760_STATUS_REG               0x01
  28         #define DS2760_STATUS_IE        (1 << 2)
  29         #define DS2760_STATUS_SWEN      (1 << 3)
  30         #define DS2760_STATUS_RNAOP     (1 << 4)
  31         #define DS2760_STATUS_PMOD      (1 << 5)
  32 #define DS2760_EEPROM_REG               0x07
  33 #define DS2760_SPECIAL_FEATURE_REG      0x08
  34 #define DS2760_VOLTAGE_MSB              0x0c
  35 #define DS2760_VOLTAGE_LSB              0x0d
  36 #define DS2760_CURRENT_MSB              0x0e
  37 #define DS2760_CURRENT_LSB              0x0f
  38 #define DS2760_CURRENT_ACCUM_MSB        0x10
  39 #define DS2760_CURRENT_ACCUM_LSB        0x11
  40 #define DS2760_TEMP_MSB                 0x18
  41 #define DS2760_TEMP_LSB                 0x19
  42 #define DS2760_EEPROM_BLOCK0            0x20
  43 #define DS2760_ACTIVE_FULL              0x20
  44 #define DS2760_EEPROM_BLOCK1            0x30
  45 #define DS2760_STATUS_WRITE_REG         0x31
  46 #define DS2760_RATED_CAPACITY           0x32
  47 #define DS2760_CURRENT_OFFSET_BIAS      0x33
  48 #define DS2760_ACTIVE_EMPTY             0x3b
  49
  50 extern int w1_ds2760_read(struct device *dev, char *buf, int addr,
  51                           size_t count);
  52 extern int w1_ds2760_write(struct device *dev, char *buf, int addr,
  53                            size_t count);
  54 extern int w1_ds2760_store_eeprom(struct device *dev, int addr);
  55 extern int w1_ds2760_recall_eeprom(struct device *dev, int addr);
  56
  57 #endif /* !__w1_ds2760_h__ */