w1_ds2781.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * 1-Wire implementation for the ds2780 chip
  4 *
  5 * Author: Renata Sayakhova <renata@oktetlabs.ru>
  6 *
  7 * Based on w1-ds2760 driver
  8 */
  9
 10#ifndef _W1_DS2781_H
 11#define _W1_DS2781_H
 12
 13/* Function commands */
 14#define W1_DS2781_READ_DATA		0x69
 15#define W1_DS2781_WRITE_DATA		0x6C
 16#define W1_DS2781_COPY_DATA		0x48
 17#define W1_DS2781_RECALL_DATA		0xB8
 18#define W1_DS2781_LOCK			0x6A
 19
 20/* Register map */
 21/* Register 0x00 Reserved */
 22#define DS2781_STATUS			0x01
 23#define DS2781_RAAC_MSB			0x02
 24#define DS2781_RAAC_LSB			0x03
 25#define DS2781_RSAC_MSB			0x04
 26#define DS2781_RSAC_LSB			0x05
 27#define DS2781_RARC			0x06
 28#define DS2781_RSRC			0x07
 29#define DS2781_IAVG_MSB			0x08
 30#define DS2781_IAVG_LSB			0x09
 31#define DS2781_TEMP_MSB			0x0A
 32#define DS2781_TEMP_LSB			0x0B
 33#define DS2781_VOLT_MSB			0x0C
 34#define DS2781_VOLT_LSB			0x0D
 35#define DS2781_CURRENT_MSB		0x0E
 36#define DS2781_CURRENT_LSB		0x0F
 37#define DS2781_ACR_MSB			0x10
 38#define DS2781_ACR_LSB			0x11
 39#define DS2781_ACRL_MSB			0x12
 40#define DS2781_ACRL_LSB			0x13
 41#define DS2781_AS			0x14
 42#define DS2781_SFR			0x15
 43#define DS2781_FULL_MSB			0x16
 44#define DS2781_FULL_LSB			0x17
 45#define DS2781_AE_MSB			0x18
 46#define DS2781_AE_LSB			0x19
 47#define DS2781_SE_MSB			0x1A
 48#define DS2781_SE_LSB			0x1B
 49/* Register 0x1C - 0x1E Reserved */
 50#define DS2781_EEPROM		0x1F
 51#define DS2781_EEPROM_BLOCK0_START	0x20
 52/* Register 0x20 - 0x2F User EEPROM */
 53#define DS2781_EEPROM_BLOCK0_END	0x2F
 54/* Register 0x30 - 0x5F Reserved */
 55#define DS2781_EEPROM_BLOCK1_START	0x60
 56#define DS2781_CONTROL			0x60
 57#define DS2781_AB			0x61
 58#define DS2781_AC_MSB			0x62
 59#define DS2781_AC_LSB			0x63
 60#define DS2781_VCHG			0x64
 61#define DS2781_IMIN			0x65
 62#define DS2781_VAE			0x66
 63#define DS2781_IAE			0x67
 64#define DS2781_AE_40			0x68
 65#define DS2781_RSNSP			0x69
 66#define DS2781_FULL_40_MSB		0x6A
 67#define DS2781_FULL_40_LSB		0x6B
 68#define DS2781_FULL_4_SLOPE		0x6C
 69#define DS2781_FULL_3_SLOPE		0x6D
 70#define DS2781_FULL_2_SLOPE		0x6E
 71#define DS2781_FULL_1_SLOPE		0x6F
 72#define DS2781_AE_4_SLOPE		0x70
 73#define DS2781_AE_3_SLOPE		0x71
 74#define DS2781_AE_2_SLOPE		0x72
 75#define DS2781_AE_1_SLOPE		0x73
 76#define DS2781_SE_4_SLOPE		0x74
 77#define DS2781_SE_3_SLOPE		0x75
 78#define DS2781_SE_2_SLOPE		0x76
 79#define DS2781_SE_1_SLOPE		0x77
 80#define DS2781_RSGAIN_MSB		0x78
 81#define DS2781_RSGAIN_LSB		0x79
 82#define DS2781_RSTC			0x7A
 83#define DS2781_COB			0x7B
 84#define DS2781_TBP34			0x7C
 85#define DS2781_TBP23			0x7D
 86#define DS2781_TBP12			0x7E
 87#define DS2781_EEPROM_BLOCK1_END	0x7F
 88/* Register 0x7D - 0xFF Reserved */
 89
 90#define DS2781_FSGAIN_MSB		0xB0
 91#define DS2781_FSGAIN_LSB		0xB1
 92
 93/* Number of valid register addresses */
 94#define DS2781_DATA_SIZE		0xB2
 95
 96/* Status register bits */
 97#define DS2781_STATUS_CHGTF		(1 << 7)
 98#define DS2781_STATUS_AEF		(1 << 6)
 99#define DS2781_STATUS_SEF		(1 << 5)
100#define DS2781_STATUS_LEARNF		(1 << 4)
101/* Bit 3 Reserved */
102#define DS2781_STATUS_UVF		(1 << 2)
103#define DS2781_STATUS_PORF		(1 << 1)
104/* Bit 0 Reserved */
105
106/* Control register bits */
107/* Bit 7 Reserved */
108#define DS2781_CONTROL_NBEN		(1 << 7)
109#define DS2781_CONTROL_UVEN		(1 << 6)
110#define DS2781_CONTROL_PMOD		(1 << 5)
111#define DS2781_CONTROL_RNAOP		(1 << 4)
112#define DS1781_CONTROL_UVTH		(1 << 3)
113/* Bit 0 - 2 Reserved */
114
115/* Special feature register bits */
116/* Bit 1 - 7 Reserved */
117#define DS2781_SFR_PIOSC		(1 << 0)
118
119/* EEPROM register bits */
120#define DS2781_EEPROM_EEC		(1 << 7)
121#define DS2781_EEPROM_LOCK		(1 << 6)
122/* Bit 2 - 6 Reserved */
123#define DS2781_EEPROM_BL1		(1 << 1)
124#define DS2781_EEPROM_BL0		(1 << 0)
125
126extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
127			int io);
128extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd);
129
130#endif /* !_W1_DS2781_H */