1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * AD5338R, AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693, |
4 | * AD5693R, AD5694, AD5694R, AD5695R, AD5696, AD5696R |
5 | * Digital to analog converters driver |
6 | * |
7 | * Copyright 2018 Analog Devices Inc. |
8 | */ |
9 | |
10 | #include "ad5686.h" |
11 | |
12 | #include <linux/module.h> |
13 | #include <linux/i2c.h> |
14 | |
15 | static int ad5686_i2c_read(struct ad5686_state *st, u8 addr) |
16 | { |
17 | struct i2c_client *i2c = to_i2c_client(st->dev); |
18 | struct i2c_msg msg[2] = { |
19 | { |
20 | .addr = i2c->addr, |
21 | .flags = i2c->flags, |
22 | .len = 3, |
23 | .buf = &st->data[0].d8[1], |
24 | }, |
25 | { |
26 | .addr = i2c->addr, |
27 | .flags = i2c->flags | I2C_M_RD, |
28 | .len = 2, |
29 | .buf = (char *)&st->data[0].d16, |
30 | }, |
31 | }; |
32 | int ret; |
33 | |
34 | st->data[0].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_NOOP) | |
35 | AD5686_ADDR(addr) | |
36 | 0x00); |
37 | |
38 | ret = i2c_transfer(adap: i2c->adapter, msgs: msg, num: 2); |
39 | if (ret < 0) |
40 | return ret; |
41 | |
42 | return be16_to_cpu(st->data[0].d16); |
43 | } |
44 | |
45 | static int ad5686_i2c_write(struct ad5686_state *st, |
46 | u8 cmd, u8 addr, u16 val) |
47 | { |
48 | struct i2c_client *i2c = to_i2c_client(st->dev); |
49 | int ret; |
50 | |
51 | st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5686_ADDR(addr) |
52 | | val); |
53 | |
54 | ret = i2c_master_send(client: i2c, buf: &st->data[0].d8[1], count: 3); |
55 | if (ret < 0) |
56 | return ret; |
57 | |
58 | return (ret != 3) ? -EIO : 0; |
59 | } |
60 | |
61 | static int ad5686_i2c_probe(struct i2c_client *i2c) |
62 | { |
63 | const struct i2c_device_id *id = i2c_client_get_device_id(client: i2c); |
64 | return ad5686_probe(dev: &i2c->dev, chip_type: id->driver_data, name: id->name, |
65 | write: ad5686_i2c_write, read: ad5686_i2c_read); |
66 | } |
67 | |
68 | static void ad5686_i2c_remove(struct i2c_client *i2c) |
69 | { |
70 | ad5686_remove(dev: &i2c->dev); |
71 | } |
72 | |
73 | static const struct i2c_device_id ad5686_i2c_id[] = { |
74 | {"ad5311r" , ID_AD5311R}, |
75 | {"ad5337r" , ID_AD5337R}, |
76 | {"ad5338r" , ID_AD5338R}, |
77 | {"ad5671r" , ID_AD5671R}, |
78 | {"ad5673r" , ID_AD5673R}, |
79 | {"ad5675r" , ID_AD5675R}, |
80 | {"ad5677r" , ID_AD5677R}, |
81 | {"ad5691r" , ID_AD5691R}, |
82 | {"ad5692r" , ID_AD5692R}, |
83 | {"ad5693" , ID_AD5693}, |
84 | {"ad5693r" , ID_AD5693R}, |
85 | {"ad5694" , ID_AD5694}, |
86 | {"ad5694r" , ID_AD5694R}, |
87 | {"ad5695r" , ID_AD5695R}, |
88 | {"ad5696" , ID_AD5696}, |
89 | {"ad5696r" , ID_AD5696R}, |
90 | {} |
91 | }; |
92 | MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id); |
93 | |
94 | static const struct of_device_id ad5686_of_match[] = { |
95 | { .compatible = "adi,ad5311r" }, |
96 | { .compatible = "adi,ad5337r" }, |
97 | { .compatible = "adi,ad5338r" }, |
98 | { .compatible = "adi,ad5671r" }, |
99 | { .compatible = "adi,ad5675r" }, |
100 | { .compatible = "adi,ad5691r" }, |
101 | { .compatible = "adi,ad5692r" }, |
102 | { .compatible = "adi,ad5693" }, |
103 | { .compatible = "adi,ad5693r" }, |
104 | { .compatible = "adi,ad5694" }, |
105 | { .compatible = "adi,ad5694r" }, |
106 | { .compatible = "adi,ad5695r" }, |
107 | { .compatible = "adi,ad5696" }, |
108 | { .compatible = "adi,ad5696r" }, |
109 | {} |
110 | }; |
111 | MODULE_DEVICE_TABLE(of, ad5686_of_match); |
112 | |
113 | static struct i2c_driver ad5686_i2c_driver = { |
114 | .driver = { |
115 | .name = "ad5696" , |
116 | .of_match_table = ad5686_of_match, |
117 | }, |
118 | .probe = ad5686_i2c_probe, |
119 | .remove = ad5686_i2c_remove, |
120 | .id_table = ad5686_i2c_id, |
121 | }; |
122 | |
123 | module_i2c_driver(ad5686_i2c_driver); |
124 | |
125 | MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>" ); |
126 | MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs" ); |
127 | MODULE_LICENSE("GPL v2" ); |
128 | MODULE_IMPORT_NS(IIO_AD5686); |
129 | |