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
adxl345_i2c_remove(struct i2c_client * client)41 static int adxl345_i2c_remove(struct i2c_client *client)
42 {
43 return adxl345_core_remove(&client->dev);
44 }
45
46 static const struct i2c_device_id adxl345_i2c_id[] = {
47 { "adxl345", ADXL345 },
48 { "adxl375", ADXL375 },
49 { }
50 };
51
52 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
53
54 static const struct of_device_id adxl345_of_match[] = {
55 { .compatible = "adi,adxl345" },
56 { .compatible = "adi,adxl375" },
57 { },
58 };
59
60 MODULE_DEVICE_TABLE(of, adxl345_of_match);
61
62 static struct i2c_driver adxl345_i2c_driver = {
63 .driver = {
64 .name = "adxl345_i2c",
65 .of_match_table = adxl345_of_match,
66 },
67 .probe = adxl345_i2c_probe,
68 .remove = adxl345_i2c_remove,
69 .id_table = adxl345_i2c_id,
70 };
71
72 module_i2c_driver(adxl345_i2c_driver);
73
74 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
75 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
76 MODULE_LICENSE("GPL v2");
77
