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This adds support for ds2760's sleep mode feature. With this feature enabled, the chip enters a deep sleep mode and disconnects from the battery when the w1 line is held down for more than 2 seconds. This new behaviour can be switched on and off using a new module parameter. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Acked-by: Matt Reimer <mreimer@vpop.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
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* 1-Wire implementation for the ds2760 chip
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*
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* Copyright © 2004-2005, Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
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*
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* Use consistent with the GNU GPL is permitted,
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* provided that this copyright notice is
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* preserved in its entirety in all copies and derived works.
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*
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*/
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#ifndef __w1_ds2760_h__
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#define __w1_ds2760_h__
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/* Known commands to the DS2760 chip */
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#define W1_DS2760_SWAP 0xAA
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#define W1_DS2760_READ_DATA 0x69
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#define W1_DS2760_WRITE_DATA 0x6C
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#define W1_DS2760_COPY_DATA 0x48
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#define W1_DS2760_RECALL_DATA 0xB8
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#define W1_DS2760_LOCK 0x6A
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/* Number of valid register addresses */
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#define DS2760_DATA_SIZE 0x40
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#define DS2760_PROTECTION_REG 0x00
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#define DS2760_STATUS_REG 0x01
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#define DS2760_STATUS_IE (1 << 2)
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#define DS2760_STATUS_SWEN (1 << 3)
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#define DS2760_STATUS_RNAOP (1 << 4)
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#define DS2760_STATUS_PMOD (1 << 5)
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#define DS2760_EEPROM_REG 0x07
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#define DS2760_SPECIAL_FEATURE_REG 0x08
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#define DS2760_VOLTAGE_MSB 0x0c
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#define DS2760_VOLTAGE_LSB 0x0d
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#define DS2760_CURRENT_MSB 0x0e
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#define DS2760_CURRENT_LSB 0x0f
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#define DS2760_CURRENT_ACCUM_MSB 0x10
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#define DS2760_CURRENT_ACCUM_LSB 0x11
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#define DS2760_TEMP_MSB 0x18
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#define DS2760_TEMP_LSB 0x19
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#define DS2760_EEPROM_BLOCK0 0x20
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#define DS2760_ACTIVE_FULL 0x20
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#define DS2760_EEPROM_BLOCK1 0x30
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#define DS2760_STATUS_WRITE_REG 0x31
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#define DS2760_RATED_CAPACITY 0x32
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#define DS2760_CURRENT_OFFSET_BIAS 0x33
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#define DS2760_ACTIVE_EMPTY 0x3b
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extern int w1_ds2760_read(struct device *dev, char *buf, int addr,
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size_t count);
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extern int w1_ds2760_write(struct device *dev, char *buf, int addr,
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size_t count);
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extern int w1_ds2760_store_eeprom(struct device *dev, int addr);
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extern int w1_ds2760_recall_eeprom(struct device *dev, int addr);
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#endif /* !__w1_ds2760_h__ */
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