// SPDX-License-Identifier: GPL-2.0-only
/*
 * I2C driver for the X-Powers' Power Management ICs
 *
 * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
 * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
 * as well as configurable GPIOs.
 *
 * This driver supports the I2C variants.
 *
 * Copyright (C) 2014 Carlo Caione
 *
 * Author: Carlo Caione <carlo@caione.org>
 */

#include <linux/acpi.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/mfd/axp20x.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/slab.h>

static int axp20x_i2c_probe(struct i2c_client *i2c)
{
        struct axp20x_dev *axp20x;
        int ret;

        axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
        if (!axp20x)
                return -ENOMEM;

        axp20x->dev = &i2c->dev;
        axp20x->irq = i2c->irq;
        dev_set_drvdata(axp20x->dev, axp20x);

        ret = axp20x_match_device(axp20x);
        if (ret)
                return ret;

        axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);
        if (IS_ERR(axp20x->regmap)) {
                ret = PTR_ERR(axp20x->regmap);
                dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
                return ret;
        }

        return axp20x_device_probe(axp20x);
}

static void axp20x_i2c_remove(struct i2c_client *i2c)
{
        struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);

        axp20x_device_remove(axp20x);
}

#ifdef CONFIG_OF
static const struct of_device_id axp20x_i2c_of_match[] = {
        { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
        { .compatible = "x-powers,axp192", .data = (void *)AXP192_ID },
        { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
        { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
        { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
        { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
        { .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID },
        { .compatible = "x-powers,axp323", .data = (void *)AXP323_ID },
        { .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
        { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
        { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
        { .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID },
        { },
};
MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
#endif

static const struct i2c_device_id axp20x_i2c_id[] = {
        { "axp152" },
        { "axp192" },
        { "axp202" },
        { "axp209" },
        { "axp221" },
        { "axp223" },
        { "axp313a" },
        { "axp717" },
        { "axp803" },
        { "axp806" },
        { "axp15060" },
        { }
};
MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);

#ifdef CONFIG_ACPI
static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
        {
                .id = "INT33F4",
                .driver_data = AXP288_ID,
        },
        { },
};
MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);
#endif

static struct i2c_driver axp20x_i2c_driver = {
        .driver = {
                .name   = "axp20x-i2c",
                .of_match_table = of_match_ptr(axp20x_i2c_of_match),
                .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match),
        },
        .probe          = axp20x_i2c_probe,
        .remove         = axp20x_i2c_remove,
        .id_table       = axp20x_i2c_id,
};

module_i2c_driver(axp20x_i2c_driver);

MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
MODULE_LICENSE("GPL");