root/drivers/iio/accel/adxl355_i2c.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * ADXL355 3-Axis Digital Accelerometer I2C driver
 *
 * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
 */

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

#include "adxl355.h"

static const struct regmap_config adxl355_i2c_regmap_config = {
        .reg_bits = 8,
        .val_bits = 8,
        .max_register = 0x2F,
        .rd_table = &adxl355_readable_regs_tbl,
        .wr_table = &adxl355_writeable_regs_tbl,
};

static int adxl355_i2c_probe(struct i2c_client *client)
{
        struct regmap *regmap;
        struct device *dev = &client->dev;
        const struct adxl355_chip_info *chip_data;

        chip_data = i2c_get_match_data(client);
        if (!chip_data)
                return -ENODEV;

        regmap = devm_regmap_init_i2c(client, &adxl355_i2c_regmap_config);
        if (IS_ERR(regmap))
                return dev_err_probe(dev, PTR_ERR(regmap), "Error initializing i2c regmap\n");

        return adxl355_core_probe(dev, regmap, chip_data);
}

static const struct i2c_device_id adxl355_i2c_id[] = {
        { .name = "adxl355", .driver_data = (kernel_ulong_t)&adxl35x_chip_info[ADXL355] },
        { .name = "adxl359", .driver_data = (kernel_ulong_t)&adxl35x_chip_info[ADXL359] },
        { }
};
MODULE_DEVICE_TABLE(i2c, adxl355_i2c_id);

static const struct of_device_id adxl355_of_match[] = {
        { .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] },
        { .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] },
        { }
};
MODULE_DEVICE_TABLE(of, adxl355_of_match);

static struct i2c_driver adxl355_i2c_driver = {
        .driver = {
                .name   = "adxl355_i2c",
                .of_match_table = adxl355_of_match,
        },
        .probe          = adxl355_i2c_probe,
        .id_table       = adxl355_i2c_id,
};
module_i2c_driver(adxl355_i2c_driver);

MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer I2C driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("IIO_ADXL355");