drivers/iio/accel/adxl345_i2c.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * ADXL345 3-Axis Digital Accelerometer I2C driver
 *
 * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
 *
 * 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or
 * 0x53 (ALT ADDRESS pin grounded)
 */

#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>

#include "adxl345.h"

static const struct regmap_config adxl345_i2c_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

static int adxl345_i2c_probe(struct i2c_client *client,
			     const struct i2c_device_id *id)
{
	struct regmap *regmap;

	if (!id)
		return -ENODEV;

	regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config);
	if (IS_ERR(regmap)) {
		dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
			PTR_ERR(regmap));
		return PTR_ERR(regmap);
	}

	return adxl345_core_probe(&client->dev, regmap, id->driver_data,
				  id->name);
}

static const struct i2c_device_id adxl345_i2c_id[] = {
	{ "adxl345", ADXL345 },
	{ "adxl375", ADXL375 },
	{ }
};

MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);

static const struct of_device_id adxl345_of_match[] = {
	{ .compatible = "adi,adxl345" },
	{ .compatible = "adi,adxl375" },
	{ },
};

MODULE_DEVICE_TABLE(of, adxl345_of_match);

static struct i2c_driver adxl345_i2c_driver = {
	.driver = {
		.name	= "adxl345_i2c",
		.of_match_table = adxl345_of_match,
	},
	.probe		= adxl345_i2c_probe,
	.id_table	= adxl345_i2c_id,
};

module_i2c_driver(adxl345_i2c_driver);

MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
MODULE_LICENSE("GPL v2");