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w1_ds2780.h
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1 /*
2  * 1-Wire implementation for the ds2780 chip
3  *
4  * Copyright (C) 2010 Indesign, LLC
5  *
6  * Author: Clifton Barnes <[email protected]>
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 
125 extern int w1_ds2780_io(struct device *dev, char *buf, int addr, size_t count,
126  int io);
127 extern int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd);
128 
129 #endif /* !_W1_DS2780_H */