1 // SPDX-License-Identifier: GPL-2.0+
3 * AD5671R, AD5675R, AD5691R, AD5692R, AD5693, AD5693R,
4 * AD5694, AD5694R, AD5695R, AD5696, AD5696R
5 * Digital to analog converters driver
7 * Copyright 2018 Analog Devices Inc.
12 #include <linux/module.h>
13 #include <linux/i2c.h>
15 static int ad5686_i2c_read(struct ad5686_state *st, u8 addr)
17 struct i2c_client *i2c = to_i2c_client(st->dev);
18 struct i2c_msg msg[2] = {
23 .buf = &st->data[0].d8[1],
27 .flags = i2c->flags | I2C_M_RD,
29 .buf = (char *)&st->data[0].d16,
34 st->data[0].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_NOOP) |
38 ret = i2c_transfer(i2c->adapter, msg, 2);
42 return be16_to_cpu(st->data[0].d16);
45 static int ad5686_i2c_write(struct ad5686_state *st,
46 u8 cmd, u8 addr, u16 val)
48 struct i2c_client *i2c = to_i2c_client(st->dev);
51 st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5686_ADDR(addr)
54 ret = i2c_master_send(i2c, &st->data[0].d8[1], 3);
58 return (ret != 3) ? -EIO : 0;
61 static int ad5686_i2c_probe(struct i2c_client *i2c,
62 const struct i2c_device_id *id)
64 return ad5686_probe(&i2c->dev, id->driver_data, id->name,
65 ad5686_i2c_write, ad5686_i2c_read);
68 static int ad5686_i2c_remove(struct i2c_client *i2c)
70 return ad5686_remove(&i2c->dev);
73 static const struct i2c_device_id ad5686_i2c_id[] = {
74 {"ad5311r", ID_AD5311R},
75 {"ad5671r", ID_AD5671R},
76 {"ad5675r", ID_AD5675R},
77 {"ad5691r", ID_AD5691R},
78 {"ad5692r", ID_AD5692R},
79 {"ad5693", ID_AD5693},
80 {"ad5693r", ID_AD5693R},
81 {"ad5694", ID_AD5694},
82 {"ad5694r", ID_AD5694R},
83 {"ad5695r", ID_AD5695R},
84 {"ad5696", ID_AD5696},
85 {"ad5696r", ID_AD5696R},
88 MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id);
90 static struct i2c_driver ad5686_i2c_driver = {
94 .probe = ad5686_i2c_probe,
95 .remove = ad5686_i2c_remove,
96 .id_table = ad5686_i2c_id,
99 module_i2c_driver(ad5686_i2c_driver);
101 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
102 MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs");
103 MODULE_LICENSE("GPL v2");