1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// SPDX-License-Identifier: GPL-2.0+
/*
* ADXL372 3-Axis Digital Accelerometer I2C driver
*
* Copyright 2018 Analog Devices Inc.
*/
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "adxl372.h"
static const struct regmap_config adxl372_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.readable_noinc_reg = adxl372_readable_noinc_reg,
};
static int adxl372_i2c_probe(struct i2c_client *client)
{
const struct i2c_device_id *id = i2c_client_get_device_id(client);
struct regmap *regmap;
unsigned int regval;
int ret;
regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
ret = regmap_read(regmap, ADXL372_REVID, ®val);
if (ret < 0)
return ret;
/* Starting with the 3rd revision an I2C chip bug was fixed */
if (regval < 3)
dev_warn(&client->dev,
"I2C might not work properly with other devices on the bus");
return adxl372_probe(&client->dev, regmap, client->irq, id->name);
}
static const struct i2c_device_id adxl372_i2c_id[] = {
{ "adxl372" },
{}
};
MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id);
static const struct of_device_id adxl372_of_match[] = {
{ .compatible = "adi,adxl372" },
{ }
};
MODULE_DEVICE_TABLE(of, adxl372_of_match);
static struct i2c_driver adxl372_i2c_driver = {
.driver = {
.name = "adxl372_i2c",
.of_match_table = adxl372_of_match,
},
.probe = adxl372_i2c_probe,
.id_table = adxl372_i2c_id,
};
module_i2c_driver(adxl372_i2c_driver);
MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("IIO_ADXL372");
|
