1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ADXL372 3-Axis Digital Accelerometer I2C driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2018 Analog Devices Inc.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/i2c.h>
9*4882a593Smuzhiyun #include <linux/mod_devicetable.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun #include <linux/regmap.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include "adxl372.h"
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun static const struct regmap_config adxl372_regmap_config = {
16*4882a593Smuzhiyun .reg_bits = 8,
17*4882a593Smuzhiyun .val_bits = 8,
18*4882a593Smuzhiyun .readable_noinc_reg = adxl372_readable_noinc_reg,
19*4882a593Smuzhiyun };
20*4882a593Smuzhiyun
adxl372_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)21*4882a593Smuzhiyun static int adxl372_i2c_probe(struct i2c_client *client,
22*4882a593Smuzhiyun const struct i2c_device_id *id)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun struct regmap *regmap;
25*4882a593Smuzhiyun unsigned int regval;
26*4882a593Smuzhiyun int ret;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config);
29*4882a593Smuzhiyun if (IS_ERR(regmap))
30*4882a593Smuzhiyun return PTR_ERR(regmap);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun ret = regmap_read(regmap, ADXL372_REVID, ®val);
33*4882a593Smuzhiyun if (ret < 0)
34*4882a593Smuzhiyun return ret;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun /* Starting with the 3rd revision an I2C chip bug was fixed */
37*4882a593Smuzhiyun if (regval < 3)
38*4882a593Smuzhiyun dev_warn(&client->dev,
39*4882a593Smuzhiyun "I2C might not work properly with other devices on the bus");
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun return adxl372_probe(&client->dev, regmap, client->irq, id->name);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun static const struct i2c_device_id adxl372_i2c_id[] = {
45*4882a593Smuzhiyun { "adxl372", 0 },
46*4882a593Smuzhiyun {}
47*4882a593Smuzhiyun };
48*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun static const struct of_device_id adxl372_of_match[] = {
51*4882a593Smuzhiyun { .compatible = "adi,adxl372" },
52*4882a593Smuzhiyun { }
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, adxl372_of_match);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun static struct i2c_driver adxl372_i2c_driver = {
57*4882a593Smuzhiyun .driver = {
58*4882a593Smuzhiyun .name = "adxl372_i2c",
59*4882a593Smuzhiyun .of_match_table = adxl372_of_match,
60*4882a593Smuzhiyun },
61*4882a593Smuzhiyun .probe = adxl372_i2c_probe,
62*4882a593Smuzhiyun .id_table = adxl372_i2c_id,
63*4882a593Smuzhiyun };
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun module_i2c_driver(adxl372_i2c_driver);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
68*4882a593Smuzhiyun MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver");
69*4882a593Smuzhiyun MODULE_LICENSE("GPL");
70