// SPDX-License-Identifier: GPL-2.0-only
/*
 * STMicroelectronics LSM9DS0 IMU driver
 *
 * Copyright (C) 2021, Intel Corporation
 *
 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
 */

#include <linux/device/devres.h>
#include <linux/err.h>
#include <linux/gfp_types.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/regmap.h>

#include <linux/iio/common/st_sensors_i2c.h>

#include "st_lsm9ds0.h"

static const struct of_device_id st_lsm9ds0_of_match[] = {
        {
                .compatible = "st,lsm303d-imu",
                .data = LSM303D_IMU_DEV_NAME,
        },
        {
                .compatible = "st,lsm9ds0-imu",
                .data = LSM9DS0_IMU_DEV_NAME,
        },
        { }
};
MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);

static const struct i2c_device_id st_lsm9ds0_id_table[] = {
        { LSM303D_IMU_DEV_NAME },
        { LSM9DS0_IMU_DEV_NAME },
        { }
};
MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table);

static const struct acpi_device_id st_lsm9ds0_acpi_match[] = {
        {"ACCL0001", (kernel_ulong_t)LSM303D_IMU_DEV_NAME},
        { }
};
MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match);

static const struct regmap_config st_lsm9ds0_regmap_config = {
        .reg_bits       = 8,
        .val_bits       = 8,
        .read_flag_mask = 0x80,
};

static int st_lsm9ds0_i2c_probe(struct i2c_client *client)
{
        const struct regmap_config *config = &st_lsm9ds0_regmap_config;
        struct device *dev = &client->dev;
        struct st_lsm9ds0 *lsm9ds0;
        struct regmap *regmap;

        st_sensors_dev_name_probe(dev, client->name, sizeof(client->name));

        lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
        if (!lsm9ds0)
                return -ENOMEM;

        lsm9ds0->dev = dev;
        lsm9ds0->name = client->name;
        lsm9ds0->irq = client->irq;

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

        i2c_set_clientdata(client, lsm9ds0);

        return st_lsm9ds0_probe(lsm9ds0, regmap);
}

static struct i2c_driver st_lsm9ds0_driver = {
        .driver = {
                .name = "st-lsm9ds0-i2c",
                .of_match_table = st_lsm9ds0_of_match,
                .acpi_match_table = st_lsm9ds0_acpi_match,
        },
        .probe = st_lsm9ds0_i2c_probe,
        .id_table = st_lsm9ds0_id_table,
};
module_i2c_driver(st_lsm9ds0_driver);

MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("IIO_ST_SENSORS");