71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
// 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", 0 },
|
|
{}
|
|
};
|
|
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_new = 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);
|