// SPDX-License-Identifier: GPL-2.0+
/*
 * ADXL371/ADXL372 3-Axis Digital Accelerometer I2C driver
 *
 * Copyright 2018 Analog Devices Inc.
 */

#include <linux/i2c.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 adxl372_chip_info *chip_info;
        struct regmap *regmap;
        unsigned int regval;
        int ret;

        chip_info = i2c_get_match_data(client);

        regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config);
        if (IS_ERR(regmap))
                return PTR_ERR(regmap);

        ret = regmap_read(regmap, ADXL372_REVID, &regval);
        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, chip_info);
}

static const struct i2c_device_id adxl372_i2c_id[] = {
        { .name = "adxl371", .driver_data = (kernel_ulong_t)&adxl371_chip_info },
        { .name = "adxl372", .driver_data = (kernel_ulong_t)&adxl372_chip_info },
        { }
};
MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id);

static const struct of_device_id adxl372_of_match[] = {
        { .compatible = "adi,adxl371", .data = &adxl371_chip_info },
        { .compatible = "adi,adxl372", .data = &adxl372_chip_info },
        { }
};
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_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com>");
MODULE_DESCRIPTION("Analog Devices ADXL371/ADXL372 3-axis accelerometer I2C driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("IIO_ADXL372");