linux-imx

 /* I2C access for DA9055 PMICs.

 *

 * Copyright(c) 2012 Dialog Semiconductor Ltd.

 *

 * Author: David Dajun Chen <dchen@diasemi.com>

 *

 * 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/of.h>

#include <linux/of_device.h>

​

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

​

static int 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 da9055_i2c_remove(struct i2c_client *i2c)

{

    struct da9055 *da9055 = i2c_get_clientdata(i2c);

​

    da9055_device_exit(da9055);

​

    return 0;

}

​

/*

 * DO NOT change the device Ids. The naming is intentionally specific as both

 * the PMIC and CODEC parts of this chip are instantiated separately as I2C

 * devices (both have configurable I2C addresses, and are to all intents and

 * purposes separate). As a result there are specific DA9055 ids for PMIC

 * and CODEC, which must be different to operate together.