1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * ADXL345 3-Axis Digital Accelerometer I2C driver
4 *
5 * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
6 *
7 * 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or
8 * 0x53 (ALT ADDRESS pin grounded)
9 */
10
11 #include <linux/i2c.h>
12 #include <linux/module.h>
13 #include <linux/regmap.h>
14
15 #include "adxl345.h"
16
17 static const struct regmap_config adxl345_i2c_regmap_config = {
18 .reg_bits = 8,
19 .val_bits = 8,
20 };
21
adxl345_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)22 static int adxl345_i2c_probe(struct i2c_client *client,
23 const struct i2c_device_id *id)
24 {
25 struct regmap *regmap;
26
27 if (!id)
28 return -ENODEV;
29
30 regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config);
31 if (IS_ERR(regmap)) {
32 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
33 PTR_ERR(regmap));
34 return PTR_ERR(regmap);
35 }
36
37 return adxl345_core_probe(&client->dev, regmap, id->driver_data,
38 id->name);
39 }
40
41 static const struct i2c_device_id adxl345_i2c_id[] = {
42 { "adxl345", ADXL345 },
43 { "adxl375", ADXL375 },
44 { }
45 };
46
47 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
48
49 static const struct of_device_id adxl345_of_match[] = {
50 { .compatible = "adi,adxl345" },
51 { .compatible = "adi,adxl375" },
52 { },
53 };
54
55 MODULE_DEVICE_TABLE(of, adxl345_of_match);
56
57 static struct i2c_driver adxl345_i2c_driver = {
58 .driver = {
59 .name = "adxl345_i2c",
60 .of_match_table = adxl345_of_match,
61 },
62 .probe = adxl345_i2c_probe,
63 .id_table = adxl345_i2c_id,
64 };
65
66 module_i2c_driver(adxl345_i2c_driver);
67
68 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
69 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
70 MODULE_LICENSE("GPL v2");
71