linux-imx

/*

 * I2C driver for Marvell 88PM860x

 *

 * Copyright (C) 2009 Marvell International Ltd.

 *

 * Author: Haojian Zhuang <haojian.zhuang@marvell.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/regmap.h>

#include <linux/mfd/88pm860x.h>

​

int pm860x_reg_read(struct i2c_client *i2c, int reg)

{

    struct pm860x_chip *chip = i2c_get_clientdata(i2c);

    struct regmap *map = (i2c == chip->client) ? chip->regmap

                : chip->regmap_companion;

    unsigned int data;

    int ret;

​

    ret = regmap_read(map, reg, &data);

    if (ret < 0)

        return ret;

    else

        return (int)data;

}

EXPORT_SYMBOL(pm860x_reg_read);

​

int pm860x_reg_write(struct i2c_client *i2c, int reg,

             unsigned char data)

{

    struct pm860x_chip *chip = i2c_get_clientdata(i2c);

    struct regmap *map = (i2c == chip->client) ? chip->regmap

                : chip->regmap_companion;

    int ret;

​

    ret = regmap_write(map, reg, data);

    return ret;

}

EXPORT_SYMBOL(pm860x_reg_write);

​

int pm860x_bulk_read(struct i2c_client *i2c, int reg,

             int count, unsigned char *buf)

{

    struct pm860x_chip *chip = i2c_get_clientdata(i2c);

    struct regmap *map = (i2c == chip->client) ? chip->regmap

                : chip->regmap_companion;

    int ret;

​

    ret = regmap_raw_read(map, reg, buf, count);

    return ret;

}

EXPORT_SYMBOL(pm860x_bulk_read);

​

int pm860x_bulk_write(struct i2c_client *i2c, int reg,

              int count, unsigned char *buf)

{

    struct pm860x_chip *chip = i2c_get_clientdata(i2c);