130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
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/*
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* 1-Wire implementation for the ds2780 chip
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*
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* Copyright (C) 2010 Indesign, LLC
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*
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* Author: Clifton Barnes <cabarnes@indesign-llc.com>
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*
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* Based on w1-ds2760 driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef _W1_DS2780_H
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#define _W1_DS2780_H
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/* Function commands */
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#define W1_DS2780_READ_DATA 0x69
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#define W1_DS2780_WRITE_DATA 0x6C
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#define W1_DS2780_COPY_DATA 0x48
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#define W1_DS2780_RECALL_DATA 0xB8
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#define W1_DS2780_LOCK 0x6A
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/* Register map */
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/* Register 0x00 Reserved */
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#define DS2780_STATUS_REG 0x01
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#define DS2780_RAAC_MSB_REG 0x02
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#define DS2780_RAAC_LSB_REG 0x03
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#define DS2780_RSAC_MSB_REG 0x04
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#define DS2780_RSAC_LSB_REG 0x05
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#define DS2780_RARC_REG 0x06
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#define DS2780_RSRC_REG 0x07
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#define DS2780_IAVG_MSB_REG 0x08
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#define DS2780_IAVG_LSB_REG 0x09
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#define DS2780_TEMP_MSB_REG 0x0A
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#define DS2780_TEMP_LSB_REG 0x0B
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#define DS2780_VOLT_MSB_REG 0x0C
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#define DS2780_VOLT_LSB_REG 0x0D
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#define DS2780_CURRENT_MSB_REG 0x0E
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#define DS2780_CURRENT_LSB_REG 0x0F
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#define DS2780_ACR_MSB_REG 0x10
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#define DS2780_ACR_LSB_REG 0x11
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#define DS2780_ACRL_MSB_REG 0x12
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#define DS2780_ACRL_LSB_REG 0x13
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#define DS2780_AS_REG 0x14
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#define DS2780_SFR_REG 0x15
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#define DS2780_FULL_MSB_REG 0x16
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#define DS2780_FULL_LSB_REG 0x17
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#define DS2780_AE_MSB_REG 0x18
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#define DS2780_AE_LSB_REG 0x19
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#define DS2780_SE_MSB_REG 0x1A
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#define DS2780_SE_LSB_REG 0x1B
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/* Register 0x1C - 0x1E Reserved */
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#define DS2780_EEPROM_REG 0x1F
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#define DS2780_EEPROM_BLOCK0_START 0x20
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/* Register 0x20 - 0x2F User EEPROM */
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#define DS2780_EEPROM_BLOCK0_END 0x2F
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/* Register 0x30 - 0x5F Reserved */
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#define DS2780_EEPROM_BLOCK1_START 0x60
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#define DS2780_CONTROL_REG 0x60
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#define DS2780_AB_REG 0x61
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#define DS2780_AC_MSB_REG 0x62
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#define DS2780_AC_LSB_REG 0x63
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#define DS2780_VCHG_REG 0x64
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#define DS2780_IMIN_REG 0x65
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#define DS2780_VAE_REG 0x66
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#define DS2780_IAE_REG 0x67
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#define DS2780_AE_40_REG 0x68
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#define DS2780_RSNSP_REG 0x69
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#define DS2780_FULL_40_MSB_REG 0x6A
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#define DS2780_FULL_40_LSB_REG 0x6B
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#define DS2780_FULL_3040_SLOPE_REG 0x6C
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#define DS2780_FULL_2030_SLOPE_REG 0x6D
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#define DS2780_FULL_1020_SLOPE_REG 0x6E
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#define DS2780_FULL_0010_SLOPE_REG 0x6F
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#define DS2780_AE_3040_SLOPE_REG 0x70
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#define DS2780_AE_2030_SLOPE_REG 0x71
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#define DS2780_AE_1020_SLOPE_REG 0x72
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#define DS2780_AE_0010_SLOPE_REG 0x73
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#define DS2780_SE_3040_SLOPE_REG 0x74
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#define DS2780_SE_2030_SLOPE_REG 0x75
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#define DS2780_SE_1020_SLOPE_REG 0x76
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#define DS2780_SE_0010_SLOPE_REG 0x77
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#define DS2780_RSGAIN_MSB_REG 0x78
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#define DS2780_RSGAIN_LSB_REG 0x79
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#define DS2780_RSTC_REG 0x7A
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#define DS2780_FRSGAIN_MSB_REG 0x7B
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#define DS2780_FRSGAIN_LSB_REG 0x7C
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#define DS2780_EEPROM_BLOCK1_END 0x7C
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/* Register 0x7D - 0xFF Reserved */
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/* Number of valid register addresses */
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#define DS2780_DATA_SIZE 0x80
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/* Status register bits */
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#define DS2780_STATUS_REG_CHGTF (1 << 7)
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#define DS2780_STATUS_REG_AEF (1 << 6)
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#define DS2780_STATUS_REG_SEF (1 << 5)
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#define DS2780_STATUS_REG_LEARNF (1 << 4)
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/* Bit 3 Reserved */
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#define DS2780_STATUS_REG_UVF (1 << 2)
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#define DS2780_STATUS_REG_PORF (1 << 1)
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/* Bit 0 Reserved */
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/* Control register bits */
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/* Bit 7 Reserved */
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#define DS2780_CONTROL_REG_UVEN (1 << 6)
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#define DS2780_CONTROL_REG_PMOD (1 << 5)
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#define DS2780_CONTROL_REG_RNAOP (1 << 4)
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/* Bit 0 - 3 Reserved */
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/* Special feature register bits */
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/* Bit 1 - 7 Reserved */
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#define DS2780_SFR_REG_PIOSC (1 << 0)
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/* EEPROM register bits */
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#define DS2780_EEPROM_REG_EEC (1 << 7)
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#define DS2780_EEPROM_REG_LOCK (1 << 6)
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/* Bit 2 - 6 Reserved */
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#define DS2780_EEPROM_REG_BL1 (1 << 1)
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#define DS2780_EEPROM_REG_BL0 (1 << 0)
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extern int w1_ds2780_io(struct device *dev, char *buf, int addr, size_t count,
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int io);
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extern int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd);
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#endif /* !_W1_DS2780_H */
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