linux-imx

// SPDX-License-Identifier: GPL-2.0+

//

// max77686.c - mfd core driver for the Maxim 77686/802

//

// Copyright (C) 2012 Samsung Electronics

// Chiwoong Byun <woong.byun@samsung.com>

// Jonghwa Lee <jonghwa3.lee@samsung.com>

//

//This driver is based on max8997.c

​

#include <linux/export.h>

#include <linux/slab.h>

#include <linux/i2c.h>

#include <linux/irq.h>

#include <linux/interrupt.h>

#include <linux/pm_runtime.h>

#include <linux/module.h>

#include <linux/mfd/core.h>

#include <linux/mfd/max77686.h>

#include <linux/mfd/max77686-private.h>

#include <linux/err.h>

#include <linux/of.h>

#include <linux/of_device.h>

​

static const struct mfd_cell max77686_devs[] = {

    { .name = "max77686-pmic", },

    { .name = "max77686-rtc", },

    { .name = "max77686-clk", },

};

​

static const struct mfd_cell max77802_devs[] = {

    { .name = "max77802-pmic", },

    { .name = "max77802-clk", },

    { .name = "max77802-rtc", },

};

​

static bool max77802_pmic_is_accessible_reg(struct device *dev,

                        unsigned int reg)

{

    return reg < MAX77802_REG_PMIC_END;

}

​

static bool max77802_rtc_is_accessible_reg(struct device *dev,

                       unsigned int reg)

{

    return (reg >= MAX77802_RTC_INT && reg < MAX77802_RTC_END);

}

​

static bool max77802_is_accessible_reg(struct device *dev, unsigned int reg)

{

    return (max77802_pmic_is_accessible_reg(dev, reg) ||

        max77802_rtc_is_accessible_reg(dev, reg));

}

​

static bool max77802_pmic_is_precious_reg(struct device *dev, unsigned int reg)

{

    return (reg == MAX77802_REG_INTSRC || reg == MAX77802_REG_INT1 ||

        reg == MAX77802_REG_INT2);

}

​

static bool max77802_rtc_is_precious_reg(struct device *dev, unsigned int reg)

{

    return (reg == MAX77802_RTC_INT ||

        reg == MAX77802_RTC_UPDATE0 ||

        reg == MAX77802_RTC_UPDATE1);

}

​

static bool max77802_is_precious_reg(struct device *dev, unsigned int reg)

{

    return (max77802_pmic_is_precious_reg(dev, reg) ||

        max77802_rtc_is_precious_reg(dev, reg));

}

​

static bool max77802_pmic_is_volatile_reg(struct device *dev, unsigned int reg)

{

    return (max77802_is_precious_reg(dev, reg) ||

        reg == MAX77802_REG_STATUS1 || reg == MAX77802_REG_STATUS2 ||

        reg == MAX77802_REG_PWRON);

}

​

static bool max77802_rtc_is_volatile_reg(struct device *dev, unsigned int reg)

{

    return (max77802_rtc_is_precious_reg(dev, reg) ||

        reg == MAX77802_RTC_SEC ||

        reg == MAX77802_RTC_MIN ||

        reg == MAX77802_RTC_HOUR ||

        reg == MAX77802_RTC_WEEKDAY ||

        reg == MAX77802_RTC_MONTH ||

        reg == MAX77802_RTC_YEAR ||

        reg == MAX77802_RTC_DATE);

}

​