linux-imx

/*

 * max8907.c - mfd driver for MAX8907

 *

 * Copyright (C) 2010 Gyungoh Yoo <jack.yoo@maxim-ic.com>

 * Copyright (C) 2010-2012, NVIDIA CORPORATION. All rights reserved.

 *

 * 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/err.h>

#include <linux/i2c.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/mfd/core.h>

#include <linux/mfd/max8907.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/regmap.h>

#include <linux/slab.h>

​

static const struct mfd_cell max8907_cells[] = {

    { .name = "max8907-regulator", },

    { .name = "max8907-rtc", },

};

​

static bool max8907_gen_is_volatile_reg(struct device *dev, unsigned int reg)

{

    switch (reg) {

    case MAX8907_REG_ON_OFF_IRQ1:

    case MAX8907_REG_ON_OFF_STAT:

    case MAX8907_REG_ON_OFF_IRQ2:

    case MAX8907_REG_CHG_IRQ1:

    case MAX8907_REG_CHG_IRQ2:

    case MAX8907_REG_CHG_STAT:

        return true;

    default:

        return false;

    }

}

​

static bool max8907_gen_is_precious_reg(struct device *dev, unsigned int reg)

{

    switch (reg) {

    case MAX8907_REG_ON_OFF_IRQ1:

    case MAX8907_REG_ON_OFF_IRQ2:

    case MAX8907_REG_CHG_IRQ1:

    case MAX8907_REG_CHG_IRQ2:

        return true;

    default:

        return false;

    }

}

​

static bool max8907_gen_is_writeable_reg(struct device *dev, unsigned int reg)

{

    return !max8907_gen_is_volatile_reg(dev, reg);

}

​

static const struct regmap_config max8907_regmap_gen_config = {