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__ */ 58