131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* 1-Wire implementation for the ds2780 chip
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*
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* Author: Renata Sayakhova <renata@oktetlabs.ru>
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*
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* Based on w1-ds2760 driver
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*/
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#ifndef _W1_DS2781_H
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#define _W1_DS2781_H
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/* Function commands */
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#define W1_DS2781_READ_DATA 0x69
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#define W1_DS2781_WRITE_DATA 0x6C
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#define W1_DS2781_COPY_DATA 0x48
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#define W1_DS2781_RECALL_DATA 0xB8
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#define W1_DS2781_LOCK 0x6A
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/* Register map */
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/* Register 0x00 Reserved */
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#define DS2781_STATUS 0x01
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#define DS2781_RAAC_MSB 0x02
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#define DS2781_RAAC_LSB 0x03
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#define DS2781_RSAC_MSB 0x04
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#define DS2781_RSAC_LSB 0x05
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#define DS2781_RARC 0x06
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#define DS2781_RSRC 0x07
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#define DS2781_IAVG_MSB 0x08
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#define DS2781_IAVG_LSB 0x09
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#define DS2781_TEMP_MSB 0x0A
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#define DS2781_TEMP_LSB 0x0B
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#define DS2781_VOLT_MSB 0x0C
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#define DS2781_VOLT_LSB 0x0D
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#define DS2781_CURRENT_MSB 0x0E
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#define DS2781_CURRENT_LSB 0x0F
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#define DS2781_ACR_MSB 0x10
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#define DS2781_ACR_LSB 0x11
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#define DS2781_ACRL_MSB 0x12
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#define DS2781_ACRL_LSB 0x13
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#define DS2781_AS 0x14
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#define DS2781_SFR 0x15
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#define DS2781_FULL_MSB 0x16
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#define DS2781_FULL_LSB 0x17
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#define DS2781_AE_MSB 0x18
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#define DS2781_AE_LSB 0x19
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#define DS2781_SE_MSB 0x1A
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#define DS2781_SE_LSB 0x1B
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/* Register 0x1C - 0x1E Reserved */
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#define DS2781_EEPROM 0x1F
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#define DS2781_EEPROM_BLOCK0_START 0x20
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/* Register 0x20 - 0x2F User EEPROM */
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#define DS2781_EEPROM_BLOCK0_END 0x2F
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/* Register 0x30 - 0x5F Reserved */
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#define DS2781_EEPROM_BLOCK1_START 0x60
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#define DS2781_CONTROL 0x60
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#define DS2781_AB 0x61
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#define DS2781_AC_MSB 0x62
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#define DS2781_AC_LSB 0x63
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#define DS2781_VCHG 0x64
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#define DS2781_IMIN 0x65
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#define DS2781_VAE 0x66
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#define DS2781_IAE 0x67
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#define DS2781_AE_40 0x68
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#define DS2781_RSNSP 0x69
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#define DS2781_FULL_40_MSB 0x6A
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#define DS2781_FULL_40_LSB 0x6B
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#define DS2781_FULL_4_SLOPE 0x6C
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#define DS2781_FULL_3_SLOPE 0x6D
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#define DS2781_FULL_2_SLOPE 0x6E
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#define DS2781_FULL_1_SLOPE 0x6F
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#define DS2781_AE_4_SLOPE 0x70
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#define DS2781_AE_3_SLOPE 0x71
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#define DS2781_AE_2_SLOPE 0x72
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#define DS2781_AE_1_SLOPE 0x73
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#define DS2781_SE_4_SLOPE 0x74
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#define DS2781_SE_3_SLOPE 0x75
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#define DS2781_SE_2_SLOPE 0x76
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#define DS2781_SE_1_SLOPE 0x77
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#define DS2781_RSGAIN_MSB 0x78
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#define DS2781_RSGAIN_LSB 0x79
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#define DS2781_RSTC 0x7A
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#define DS2781_COB 0x7B
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#define DS2781_TBP34 0x7C
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#define DS2781_TBP23 0x7D
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#define DS2781_TBP12 0x7E
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#define DS2781_EEPROM_BLOCK1_END 0x7F
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/* Register 0x7D - 0xFF Reserved */
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#define DS2781_FSGAIN_MSB 0xB0
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#define DS2781_FSGAIN_LSB 0xB1
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/* Number of valid register addresses */
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#define DS2781_DATA_SIZE 0xB2
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/* Status register bits */
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#define DS2781_STATUS_CHGTF (1 << 7)
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#define DS2781_STATUS_AEF (1 << 6)
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#define DS2781_STATUS_SEF (1 << 5)
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#define DS2781_STATUS_LEARNF (1 << 4)
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/* Bit 3 Reserved */
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#define DS2781_STATUS_UVF (1 << 2)
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#define DS2781_STATUS_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 DS2781_CONTROL_NBEN (1 << 7)
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#define DS2781_CONTROL_UVEN (1 << 6)
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#define DS2781_CONTROL_PMOD (1 << 5)
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#define DS2781_CONTROL_RNAOP (1 << 4)
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#define DS1781_CONTROL_UVTH (1 << 3)
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/* Bit 0 - 2 Reserved */
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/* Special feature register bits */
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/* Bit 1 - 7 Reserved */
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#define DS2781_SFR_PIOSC (1 << 0)
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/* EEPROM register bits */
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#define DS2781_EEPROM_EEC (1 << 7)
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#define DS2781_EEPROM_LOCK (1 << 6)
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/* Bit 2 - 6 Reserved */
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#define DS2781_EEPROM_BL1 (1 << 1)
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#define DS2781_EEPROM_BL0 (1 << 0)
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extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
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int io);
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extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd);
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#endif /* !_W1_DS2781_H */
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