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Clifton Barnes275ac742011-05-26 16:26:04 -07001/*
2 * 1-Wire implementation for the ds2780 chip
3 *
4 * Copyright (C) 2010 Indesign, LLC
5 *
6 * Author: Clifton Barnes <cabarnes@indesign-llc.com>
7 *
8 * Based on w1-ds2760 driver
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 */
15
16#ifndef _W1_DS2780_H
17#define _W1_DS2780_H
18
19/* Function commands */
20#define W1_DS2780_READ_DATA 0x69
21#define W1_DS2780_WRITE_DATA 0x6C
22#define W1_DS2780_COPY_DATA 0x48
23#define W1_DS2780_RECALL_DATA 0xB8
24#define W1_DS2780_LOCK 0x6A
25
26/* Register map */
27/* Register 0x00 Reserved */
28#define DS2780_STATUS_REG 0x01
29#define DS2780_RAAC_MSB_REG 0x02
30#define DS2780_RAAC_LSB_REG 0x03
31#define DS2780_RSAC_MSB_REG 0x04
32#define DS2780_RSAC_LSB_REG 0x05
33#define DS2780_RARC_REG 0x06
34#define DS2780_RSRC_REG 0x07
35#define DS2780_IAVG_MSB_REG 0x08
36#define DS2780_IAVG_LSB_REG 0x09
37#define DS2780_TEMP_MSB_REG 0x0A
38#define DS2780_TEMP_LSB_REG 0x0B
39#define DS2780_VOLT_MSB_REG 0x0C
40#define DS2780_VOLT_LSB_REG 0x0D
41#define DS2780_CURRENT_MSB_REG 0x0E
42#define DS2780_CURRENT_LSB_REG 0x0F
43#define DS2780_ACR_MSB_REG 0x10
44#define DS2780_ACR_LSB_REG 0x11
45#define DS2780_ACRL_MSB_REG 0x12
46#define DS2780_ACRL_LSB_REG 0x13
47#define DS2780_AS_REG 0x14
48#define DS2780_SFR_REG 0x15
49#define DS2780_FULL_MSB_REG 0x16
50#define DS2780_FULL_LSB_REG 0x17
51#define DS2780_AE_MSB_REG 0x18
52#define DS2780_AE_LSB_REG 0x19
53#define DS2780_SE_MSB_REG 0x1A
54#define DS2780_SE_LSB_REG 0x1B
55/* Register 0x1C - 0x1E Reserved */
56#define DS2780_EEPROM_REG 0x1F
57#define DS2780_EEPROM_BLOCK0_START 0x20
58/* Register 0x20 - 0x2F User EEPROM */
59#define DS2780_EEPROM_BLOCK0_END 0x2F
60/* Register 0x30 - 0x5F Reserved */
61#define DS2780_EEPROM_BLOCK1_START 0x60
62#define DS2780_CONTROL_REG 0x60
63#define DS2780_AB_REG 0x61
64#define DS2780_AC_MSB_REG 0x62
65#define DS2780_AC_LSB_REG 0x63
66#define DS2780_VCHG_REG 0x64
67#define DS2780_IMIN_REG 0x65
68#define DS2780_VAE_REG 0x66
69#define DS2780_IAE_REG 0x67
70#define DS2780_AE_40_REG 0x68
71#define DS2780_RSNSP_REG 0x69
72#define DS2780_FULL_40_MSB_REG 0x6A
73#define DS2780_FULL_40_LSB_REG 0x6B
74#define DS2780_FULL_3040_SLOPE_REG 0x6C
75#define DS2780_FULL_2030_SLOPE_REG 0x6D
76#define DS2780_FULL_1020_SLOPE_REG 0x6E
77#define DS2780_FULL_0010_SLOPE_REG 0x6F
78#define DS2780_AE_3040_SLOPE_REG 0x70
79#define DS2780_AE_2030_SLOPE_REG 0x71
80#define DS2780_AE_1020_SLOPE_REG 0x72
81#define DS2780_AE_0010_SLOPE_REG 0x73
82#define DS2780_SE_3040_SLOPE_REG 0x74
83#define DS2780_SE_2030_SLOPE_REG 0x75
84#define DS2780_SE_1020_SLOPE_REG 0x76
85#define DS2780_SE_0010_SLOPE_REG 0x77
86#define DS2780_RSGAIN_MSB_REG 0x78
87#define DS2780_RSGAIN_LSB_REG 0x79
88#define DS2780_RSTC_REG 0x7A
89#define DS2780_FRSGAIN_MSB_REG 0x7B
90#define DS2780_FRSGAIN_LSB_REG 0x7C
91#define DS2780_EEPROM_BLOCK1_END 0x7C
92/* Register 0x7D - 0xFF Reserved */
93
94/* Number of valid register addresses */
95#define DS2780_DATA_SIZE 0x80
96
97/* Status register bits */
98#define DS2780_STATUS_REG_CHGTF (1 << 7)
99#define DS2780_STATUS_REG_AEF (1 << 6)
100#define DS2780_STATUS_REG_SEF (1 << 5)
101#define DS2780_STATUS_REG_LEARNF (1 << 4)
102/* Bit 3 Reserved */
103#define DS2780_STATUS_REG_UVF (1 << 2)
104#define DS2780_STATUS_REG_PORF (1 << 1)
105/* Bit 0 Reserved */
106
107/* Control register bits */
108/* Bit 7 Reserved */
109#define DS2780_CONTROL_REG_UVEN (1 << 6)
110#define DS2780_CONTROL_REG_PMOD (1 << 5)
111#define DS2780_CONTROL_REG_RNAOP (1 << 4)
112/* Bit 0 - 3 Reserved */
113
114/* Special feature register bits */
115/* Bit 1 - 7 Reserved */
116#define DS2780_SFR_REG_PIOSC (1 << 0)
117
118/* EEPROM register bits */
119#define DS2780_EEPROM_REG_EEC (1 << 7)
120#define DS2780_EEPROM_REG_LOCK (1 << 6)
121/* Bit 2 - 6 Reserved */
122#define DS2780_EEPROM_REG_BL1 (1 << 1)
123#define DS2780_EEPROM_REG_BL0 (1 << 0)
124
125extern int w1_ds2780_io(struct device *dev, char *buf, int addr, size_t count,
126 int io);
127extern int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd);
128
129#endif /* !_W1_DS2780_H */