1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Driver for the Analog Devices digital potentiometers
*
* Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef _AD_DPOT_H_
#define _AD_DPOT_H_
#include <linux/types.h>
#define DPOT_CONF(features, wipers, max_pos, uid) \
(((features) << 18) | (((wipers) & 0xFF) << 10) | \
((max_pos & 0xF) << 6) | (uid & 0x3F))
#define DPOT_UID(conf) (conf & 0x3F)
#define DPOT_MAX_POS(conf) ((conf >> 6) & 0xF)
#define DPOT_WIPERS(conf) ((conf >> 10) & 0xFF)
#define DPOT_FEAT(conf) (conf >> 18)
#define BRDAC0 (1 << 0)
#define BRDAC1 (1 << 1)
#define BRDAC2 (1 << 2)
#define BRDAC3 (1 << 3)
#define BRDAC4 (1 << 4)
#define BRDAC5 (1 << 5)
#define MAX_RDACS 6
#define F_CMD_INC (1 << 0) /* Features INC/DEC ALL, 6dB */
#define F_CMD_EEP (1 << 1) /* Features EEPROM */
#define F_CMD_OTP (1 << 2) /* Features OTP */
#define F_CMD_TOL (1 << 3) /* RDACS feature Tolerance REG */
#define F_RDACS_RW (1 << 4) /* RDACS are Read/Write */
#define F_RDACS_WONLY (1 << 5) /* RDACS are Write only */
#define F_AD_APPDATA (1 << 6) /* RDAC Address append to data */
#define F_SPI_8BIT (1 << 7) /* All SPI XFERS are 8-bit */
#define F_SPI_16BIT (1 << 8) /* All SPI XFERS are 16-bit */
#define F_SPI_24BIT (1 << 9) /* All SPI XFERS are 24-bit */
#define F_RDACS_RW_TOL (F_RDACS_RW | F_CMD_EEP | F_CMD_TOL)
#define F_RDACS_RW_EEP (F_RDACS_RW | F_CMD_EEP)
#define F_SPI (F_SPI_8BIT | F_SPI_16BIT | F_SPI_24BIT)
enum dpot_devid {
AD5258_ID = DPOT_CONF(F_RDACS_RW_TOL, BRDAC0, 6, 0), /* I2C */
AD5259_ID = DPOT_CONF(F_RDACS_RW_TOL, BRDAC0, 8, 1),
AD5251_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC1 | BRDAC3, 6, 2),
AD5252_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC1 | BRDAC3, 8, 3),
AD5253_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 4),
AD5254_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 5),
AD5255_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC0 | BRDAC1 | BRDAC2, 9, 6),
AD5160_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 7), /* SPI */
AD5161_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 8),
AD5162_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1, 8, 9),
AD5165_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 10),
AD5200_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 11),
AD5201_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 5, 12),
AD5203_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 13),
AD5204_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 14),
AD5206_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3 | BRDAC4 | BRDAC5,
8, 15),
AD5207_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1, 8, 16),
AD5231_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
BRDAC0, 10, 17),
AD5232_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_16BIT,
BRDAC0 | BRDAC1, 8, 18),
AD5233_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_16BIT,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 19),
AD5235_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
BRDAC0 | BRDAC1, 10, 20),
AD5260_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 21),
AD5262_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1, 8, 22),
AD5263_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 23),
AD5290_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 24),
AD5291_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT | F_CMD_OTP,
BRDAC0, 8, 25),
AD5292_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT | F_CMD_OTP,
BRDAC0, 10, 26),
AD5293_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 10, 27),
AD7376_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 7, 28),
AD8400_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
BRDAC0, 8, 29),
AD8402_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1, 8, 30),
AD8403_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
BRDAC0 | BRDAC1 | BRDAC2, 8, 31),
ADN2850_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
BRDAC0 | BRDAC1, 10, 32),
AD5241_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 33),
AD5242_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 34),
AD5243_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 35),
AD5245_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 36),
AD5246_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 37),
AD5247_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 38),
AD5248_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 39),
AD5280_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 40),
AD5282_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 41),
ADN2860_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC0 | BRDAC1 | BRDAC2, 9, 42),
AD5273_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 43),
AD5171_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 44),
AD5170_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 8, 45),
AD5172_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 46),
AD5173_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 47),
AD5270_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP | F_SPI_16BIT,
BRDAC0, 10, 48),
AD5271_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP | F_SPI_16BIT,
BRDAC0, 8, 49),
AD5272_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 10, 50),
AD5274_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 8, 51),
};
#define DPOT_RDAC0 0
#define DPOT_RDAC1 1
#define DPOT_RDAC2 2
#define DPOT_RDAC3 3
#define DPOT_RDAC4 4
#define DPOT_RDAC5 5
#define DPOT_RDAC_MASK 0x1F
#define DPOT_REG_TOL 0x18
#define DPOT_TOL_RDAC0 (DPOT_REG_TOL | DPOT_RDAC0)
#define DPOT_TOL_RDAC1 (DPOT_REG_TOL | DPOT_RDAC1)
#define DPOT_TOL_RDAC2 (DPOT_REG_TOL | DPOT_RDAC2)
#define DPOT_TOL_RDAC3 (DPOT_REG_TOL | DPOT_RDAC3)
#define DPOT_TOL_RDAC4 (DPOT_REG_TOL | DPOT_RDAC4)
#define DPOT_TOL_RDAC5 (DPOT_REG_TOL | DPOT_RDAC5)
/* RDAC-to-EEPROM Interface Commands */
#define DPOT_ADDR_RDAC (0x0 << 5)
#define DPOT_ADDR_EEPROM (0x1 << 5)
#define DPOT_ADDR_OTP (0x1 << 6)
#define DPOT_ADDR_CMD (0x1 << 7)
#define DPOT_ADDR_OTP_EN (0x1 << 9)
#define DPOT_DEC_ALL_6DB (DPOT_ADDR_CMD | (0x4 << 3))
#define DPOT_INC_ALL_6DB (DPOT_ADDR_CMD | (0x9 << 3))
#define DPOT_DEC_ALL (DPOT_ADDR_CMD | (0x6 << 3))
#define DPOT_INC_ALL (DPOT_ADDR_CMD | (0xB << 3))
#define DPOT_SPI_RDAC 0xB0
#define DPOT_SPI_EEPROM 0x30
#define DPOT_SPI_READ_RDAC 0xA0
#define DPOT_SPI_READ_EEPROM 0x90
#define DPOT_SPI_DEC_ALL_6DB 0x50
#define DPOT_SPI_INC_ALL_6DB 0xD0
#define DPOT_SPI_DEC_ALL 0x70
#define DPOT_SPI_INC_ALL 0xF0
/* AD5291/2/3 use special commands */
#define DPOT_AD5291_RDAC 0x01
#define DPOT_AD5291_READ_RDAC 0x02
#define DPOT_AD5291_STORE_XTPM 0x03
#define DPOT_AD5291_CTRLREG 0x06
#define DPOT_AD5291_UNLOCK_CMD 0x03
/* AD5270/1/2/4 use special commands */
#define DPOT_AD5270_1_2_4_RDAC 0x01
#define DPOT_AD5270_1_2_4_READ_RDAC 0x02
#define DPOT_AD5270_1_2_4_STORE_XTPM 0x03
#define DPOT_AD5270_1_2_4_CTRLREG 0x07
#define DPOT_AD5270_1_2_4_UNLOCK_CMD 0x03
#define DPOT_AD5282_RDAC_AB 0x80
#define DPOT_AD5273_FUSE 0x80
#define DPOT_AD5170_2_3_FUSE 0x20
#define DPOT_AD5170_2_3_OW 0x08
#define DPOT_AD5172_3_A0 0x08
#define DPOT_AD5170_2FUSE 0x80
struct dpot_data;
struct ad_dpot_bus_ops {
int (*read_d8) (void *client);
int (*read_r8d8) (void *client, u8 reg);
int (*read_r8d16) (void *client, u8 reg);
int (*write_d8) (void *client, u8 val);
int (*write_r8d8) (void *client, u8 reg, u8 val);
int (*write_r8d16) (void *client, u8 reg, u16 val);
};
struct ad_dpot_bus_data {
void *client;
const struct ad_dpot_bus_ops *bops;
};
struct ad_dpot_id {
char *name;
unsigned long devid;
};
int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id);
int ad_dpot_remove(struct device *dev);
#endif
|
