da9055-i2c.c

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 /* I2C access for DA9055 PMICs.
 *
 * Copyright(c) 2012 Dialog Semiconductor Ltd.
 *
 * Author: David Dajun Chen <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/err.h>

#include <linux/mfd/da9055/core.h>

static int __devinit da9055_i2c_probe(struct i2c_client *i2c,
                      const struct i2c_device_id *id)
{
    struct da9055 *da9055;
    int ret;

    da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
    if (!da9055)
        return -ENOMEM;

    da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
    if (IS_ERR(da9055->regmap)) {
        ret = PTR_ERR(da9055->regmap);
        dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
            ret);
        return ret;
    }

    da9055->dev = &i2c->dev;
    da9055->chip_irq = i2c->irq;

    i2c_set_clientdata(i2c, da9055);

    return da9055_device_init(da9055);
}

static int __devexit da9055_i2c_remove(struct i2c_client *i2c)
{
    struct da9055 *da9055 = i2c_get_clientdata(i2c);

    da9055_device_exit(da9055);

    return 0;
}

static struct i2c_device_id da9055_i2c_id[] = {
    {"da9055-pmic", 0},
    { }
};

static struct i2c_driver da9055_i2c_driver = {
    .probe = da9055_i2c_probe,
    .remove = __devexit_p(da9055_i2c_remove),
    .id_table = da9055_i2c_id,
    .driver = {
        .name = "da9055",
        .owner = THIS_MODULE,
    },
};

static int __init da9055_i2c_init(void)
{
    int ret;

    ret = i2c_add_driver(&da9055_i2c_driver);
    if (ret != 0) {
        pr_err("DA9055 I2C registration failed %d\n", ret);
        return ret;
    }

    return 0;
}
subsys_initcall(da9055_i2c_init);

static void __exit da9055_i2c_exit(void)
{
    i2c_del_driver(&da9055_i2c_driver);
}
module_exit(da9055_i2c_exit);

MODULE_AUTHOR("David Dajun Chen <[email protected]>");
MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
MODULE_LICENSE("GPL");