blob: 82bc66497b43a8c0c7116163eb7d1c8808718bca [file] [log] [blame]
Renata Sayakhovafef37e92012-02-29 14:58:53 +01001/*
2 * 1-Wire implementation for the ds2780 chip
3 *
4 * Author: Renata Sayakhova <renata@oktetlabs.ru>
5 *
6 * Based on w1-ds2760 driver
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14#ifndef _W1_DS2781_H
15#define _W1_DS2781_H
16
17/* Function commands */
18#define W1_DS2781_READ_DATA 0x69
19#define W1_DS2781_WRITE_DATA 0x6C
20#define W1_DS2781_COPY_DATA 0x48
21#define W1_DS2781_RECALL_DATA 0xB8
22#define W1_DS2781_LOCK 0x6A
23
24/* Register map */
25/* Register 0x00 Reserved */
26#define DS2781_STATUS 0x01
27#define DS2781_RAAC_MSB 0x02
28#define DS2781_RAAC_LSB 0x03
29#define DS2781_RSAC_MSB 0x04
30#define DS2781_RSAC_LSB 0x05
31#define DS2781_RARC 0x06
32#define DS2781_RSRC 0x07
33#define DS2781_IAVG_MSB 0x08
34#define DS2781_IAVG_LSB 0x09
35#define DS2781_TEMP_MSB 0x0A
36#define DS2781_TEMP_LSB 0x0B
37#define DS2781_VOLT_MSB 0x0C
38#define DS2781_VOLT_LSB 0x0D
39#define DS2781_CURRENT_MSB 0x0E
40#define DS2781_CURRENT_LSB 0x0F
41#define DS2781_ACR_MSB 0x10
42#define DS2781_ACR_LSB 0x11
43#define DS2781_ACRL_MSB 0x12
44#define DS2781_ACRL_LSB 0x13
45#define DS2781_AS 0x14
46#define DS2781_SFR 0x15
47#define DS2781_FULL_MSB 0x16
48#define DS2781_FULL_LSB 0x17
49#define DS2781_AE_MSB 0x18
50#define DS2781_AE_LSB 0x19
51#define DS2781_SE_MSB 0x1A
52#define DS2781_SE_LSB 0x1B
53/* Register 0x1C - 0x1E Reserved */
54#define DS2781_EEPROM 0x1F
55#define DS2781_EEPROM_BLOCK0_START 0x20
56/* Register 0x20 - 0x2F User EEPROM */
57#define DS2781_EEPROM_BLOCK0_END 0x2F
58/* Register 0x30 - 0x5F Reserved */
59#define DS2781_EEPROM_BLOCK1_START 0x60
60#define DS2781_CONTROL 0x60
61#define DS2781_AB 0x61
62#define DS2781_AC_MSB 0x62
63#define DS2781_AC_LSB 0x63
64#define DS2781_VCHG 0x64
65#define DS2781_IMIN 0x65
66#define DS2781_VAE 0x66
67#define DS2781_IAE 0x67
68#define DS2781_AE_40 0x68
69#define DS2781_RSNSP 0x69
70#define DS2781_FULL_40_MSB 0x6A
71#define DS2781_FULL_40_LSB 0x6B
72#define DS2781_FULL_4_SLOPE 0x6C
73#define DS2781_FULL_3_SLOPE 0x6D
74#define DS2781_FULL_2_SLOPE 0x6E
75#define DS2781_FULL_1_SLOPE 0x6F
76#define DS2781_AE_4_SLOPE 0x70
77#define DS2781_AE_3_SLOPE 0x71
78#define DS2781_AE_2_SLOPE 0x72
79#define DS2781_AE_1_SLOPE 0x73
80#define DS2781_SE_4_SLOPE 0x74
81#define DS2781_SE_3_SLOPE 0x75
82#define DS2781_SE_2_SLOPE 0x76
83#define DS2781_SE_1_SLOPE 0x77
84#define DS2781_RSGAIN_MSB 0x78
85#define DS2781_RSGAIN_LSB 0x79
86#define DS2781_RSTC 0x7A
87#define DS2781_COB 0x7B
88#define DS2781_TBP34 0x7C
89#define DS2781_TBP23 0x7D
90#define DS2781_TBP12 0x7E
91#define DS2781_EEPROM_BLOCK1_END 0x7F
92/* Register 0x7D - 0xFF Reserved */
93
94#define DS2781_FSGAIN_MSB 0xB0
95#define DS2781_FSGAIN_LSB 0xB1
96
97/* Number of valid register addresses */
98#define DS2781_DATA_SIZE 0xB2
99
100/* Status register bits */
101#define DS2781_STATUS_CHGTF (1 << 7)
102#define DS2781_STATUS_AEF (1 << 6)
103#define DS2781_STATUS_SEF (1 << 5)
104#define DS2781_STATUS_LEARNF (1 << 4)
105/* Bit 3 Reserved */
106#define DS2781_STATUS_UVF (1 << 2)
107#define DS2781_STATUS_PORF (1 << 1)
108/* Bit 0 Reserved */
109
110/* Control register bits */
111/* Bit 7 Reserved */
112#define DS2781_CONTROL_NBEN (1 << 7)
113#define DS2781_CONTROL_UVEN (1 << 6)
114#define DS2781_CONTROL_PMOD (1 << 5)
115#define DS2781_CONTROL_RNAOP (1 << 4)
116#define DS1781_CONTROL_UVTH (1 << 3)
117/* Bit 0 - 2 Reserved */
118
119/* Special feature register bits */
120/* Bit 1 - 7 Reserved */
121#define DS2781_SFR_PIOSC (1 << 0)
122
123/* EEPROM register bits */
124#define DS2781_EEPROM_EEC (1 << 7)
125#define DS2781_EEPROM_LOCK (1 << 6)
126/* Bit 2 - 6 Reserved */
127#define DS2781_EEPROM_BL1 (1 << 1)
128#define DS2781_EEPROM_BL0 (1 << 0)
129
130extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
131 int io);
132extern int w1_ds2781_io_nolock(struct device *dev, char *buf, int addr,
133 size_t count, int io);
134extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd);
135
136#endif /* !_W1_DS2781_H */