// SPDX-License-Identifier: GPL-2.0-only
/*
 * i2c driver for hmc5843/5843/5883/5883l/5983
 *
 * Split from hmc5843.c
 * Copyright (C) Josef Gajdusek <atx@atx.name>
 */

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

#include "hmc5843.h"

static const struct regmap_range hmc5843_readable_ranges[] = {
        regmap_reg_range(0, HMC5843_ID_END),
};

static const struct regmap_access_table hmc5843_readable_table = {
        .yes_ranges = hmc5843_readable_ranges,
        .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges),
};

static const struct regmap_range hmc5843_writable_ranges[] = {
        regmap_reg_range(0, HMC5843_MODE_REG),
};

static const struct regmap_access_table hmc5843_writable_table = {
        .yes_ranges = hmc5843_writable_ranges,
        .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges),
};

static const struct regmap_range hmc5843_volatile_ranges[] = {
        regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG),
};

static const struct regmap_access_table hmc5843_volatile_table = {
        .yes_ranges = hmc5843_volatile_ranges,
        .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges),
};

static const struct regmap_config hmc5843_i2c_regmap_config = {
        .reg_bits = 8,
        .val_bits = 8,

        .rd_table = &hmc5843_readable_table,
        .wr_table = &hmc5843_writable_table,
        .volatile_table = &hmc5843_volatile_table,

        .cache_type = REGCACHE_RBTREE,
};

static int hmc5843_i2c_probe(struct i2c_client *cli)
{
        const struct i2c_device_id *id = i2c_client_get_device_id(cli);
        struct regmap *regmap = devm_regmap_init_i2c(cli,
                        &hmc5843_i2c_regmap_config);
        if (IS_ERR(regmap))
                return PTR_ERR(regmap);

        return hmc5843_common_probe(&cli->dev,
                        regmap,
                        id->driver_data, id->name);
}

static void hmc5843_i2c_remove(struct i2c_client *client)
{
        hmc5843_common_remove(&client->dev);
}

static const struct i2c_device_id hmc5843_id[] = {
        { .name = "hmc5843", .driver_data = HMC5843_ID },
        { .name = "hmc5883", .driver_data = HMC5883_ID },
        { .name = "hmc5883l", .driver_data = HMC5883L_ID },
        { .name = "hmc5983", .driver_data = HMC5983_ID },
        { }
};
MODULE_DEVICE_TABLE(i2c, hmc5843_id);

static const struct of_device_id hmc5843_of_match[] = {
        { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
        { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
        { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
        { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
        { }
};
MODULE_DEVICE_TABLE(of, hmc5843_of_match);

static struct i2c_driver hmc5843_driver = {
        .driver = {
                .name   = "hmc5843",
                .pm     = pm_sleep_ptr(&hmc5843_pm_ops),
                .of_match_table = hmc5843_of_match,
        },
        .id_table       = hmc5843_id,
        .probe          = hmc5843_i2c_probe,
        .remove         = hmc5843_i2c_remove,
};
module_i2c_driver(hmc5843_driver);

MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("IIO_HMC5843");