// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * wm831x-core.c  --  Device access for Wolfson WM831x PMICs
 *
 * Copyright 2009 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/mod_devicetable.h>

#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
#include <linux/mfd/wm831x/irq.h>
#include <linux/mfd/wm831x/auxadc.h>
#include <linux/mfd/wm831x/otp.h>
#include <linux/mfd/wm831x/pmu.h>
#include <linux/mfd/wm831x/regulator.h>

/* Current settings - values are 2*2^(reg_val/4) microamps.  These are
 * exported since they are used by multiple drivers.
 */
const unsigned int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
        2,
        2,
        3,
        3,
        4,
        5,
        6,
        7,
        8,
        10,
        11,
        13,
        16,
        19,
        23,
        27,
        32,
        38,
        45,
        54,
        64,
        76,
        91,
        108,
        128,
        152,
        181,
        215,
        256,
        304,
        362,
        431,
        512,
        609,
        724,
        861,
        1024,
        1218,
        1448,
        1722,
        2048,
        2435,
        2896,
        3444,
        4096,
        4871,
        5793,
        6889,
        8192,
        9742,
        11585,
        13777,
        16384,
        19484,
        23170,
        27554,
};
EXPORT_SYMBOL_GPL(wm831x_isinkv_values);

static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
{
        if (!wm831x->locked)
                return 0;

        switch (reg) {
        case WM831X_WATCHDOG:
        case WM831X_DC4_CONTROL:
        case WM831X_ON_PIN_CONTROL:
        case WM831X_BACKUP_CHARGER_CONTROL:
        case WM831X_CHARGER_CONTROL_1:
        case WM831X_CHARGER_CONTROL_2:
                return 1;

        default:
                return 0;
        }
}

/**
 * wm831x_reg_lock: Unlock user keyed registers
 *
 * The WM831x has a user key preventing writes to particularly
 * critical registers.  This function locks those registers,
 * allowing writes to them.
 *
 * @wm831x: pointer to local driver data structure
 */
void wm831x_reg_lock(struct wm831x *wm831x)
{
        int ret;

        ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
        if (ret == 0) {
                dev_vdbg(wm831x->dev, "Registers locked\n");

                mutex_lock(&wm831x->io_lock);
                WARN_ON(wm831x->locked);
                wm831x->locked = 1;
                mutex_unlock(&wm831x->io_lock);
        } else {
                dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
        }

}
EXPORT_SYMBOL_GPL(wm831x_reg_lock);

/**
 * wm831x_reg_unlock: Unlock user keyed registers
 *
 * The WM831x has a user key preventing writes to particularly
 * critical registers.  This function locks those registers,
 * preventing spurious writes.
 *
 * @wm831x: pointer to local driver data structure
 */
int wm831x_reg_unlock(struct wm831x *wm831x)
{
        int ret;

        /* 0x9716 is the value required to unlock the registers */
        ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
        if (ret == 0) {
                dev_vdbg(wm831x->dev, "Registers unlocked\n");

                mutex_lock(&wm831x->io_lock);
                WARN_ON(!wm831x->locked);
                wm831x->locked = 0;
                mutex_unlock(&wm831x->io_lock);
        }

        return ret;
}
EXPORT_SYMBOL_GPL(wm831x_reg_unlock);

static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
{
        switch (reg) {
        case WM831X_RESET_ID:
        case WM831X_REVISION:
        case WM831X_PARENT_ID:
        case WM831X_SYSVDD_CONTROL:
        case WM831X_THERMAL_MONITORING:
        case WM831X_POWER_STATE:
        case WM831X_WATCHDOG:
        case WM831X_ON_PIN_CONTROL:
        case WM831X_RESET_CONTROL:
        case WM831X_CONTROL_INTERFACE:
        case WM831X_SECURITY_KEY:
        case WM831X_SOFTWARE_SCRATCH:
        case WM831X_OTP_CONTROL:
        case WM831X_GPIO_LEVEL:
        case WM831X_SYSTEM_STATUS:
        case WM831X_ON_SOURCE:
        case WM831X_OFF_SOURCE:
        case WM831X_SYSTEM_INTERRUPTS:
        case WM831X_INTERRUPT_STATUS_1:
        case WM831X_INTERRUPT_STATUS_2:
        case WM831X_INTERRUPT_STATUS_3:
        case WM831X_INTERRUPT_STATUS_4:
        case WM831X_INTERRUPT_STATUS_5:
        case WM831X_IRQ_CONFIG:
        case WM831X_SYSTEM_INTERRUPTS_MASK:
        case WM831X_INTERRUPT_STATUS_1_MASK:
        case WM831X_INTERRUPT_STATUS_2_MASK:
        case WM831X_INTERRUPT_STATUS_3_MASK:
        case WM831X_INTERRUPT_STATUS_4_MASK:
        case WM831X_INTERRUPT_STATUS_5_MASK:
        case WM831X_RTC_WRITE_COUNTER:
        case WM831X_RTC_TIME_1:
        case WM831X_RTC_TIME_2:
        case WM831X_RTC_ALARM_1:
        case WM831X_RTC_ALARM_2:
        case WM831X_RTC_CONTROL:
        case WM831X_RTC_TRIM:
        case WM831X_TOUCH_CONTROL_1:
        case WM831X_TOUCH_CONTROL_2:
        case WM831X_TOUCH_DATA_X:
        case WM831X_TOUCH_DATA_Y:
        case WM831X_TOUCH_DATA_Z:
        case WM831X_AUXADC_DATA:
        case WM831X_AUXADC_CONTROL:
        case WM831X_AUXADC_SOURCE:
        case WM831X_COMPARATOR_CONTROL:
        case WM831X_COMPARATOR_1:
        case WM831X_COMPARATOR_2:
        case WM831X_COMPARATOR_3:
        case WM831X_COMPARATOR_4:
        case WM831X_GPIO1_CONTROL:
        case WM831X_GPIO2_CONTROL:
        case WM831X_GPIO3_CONTROL:
        case WM831X_GPIO4_CONTROL:
        case WM831X_GPIO5_CONTROL:
        case WM831X_GPIO6_CONTROL:
        case WM831X_GPIO7_CONTROL:
        case WM831X_GPIO8_CONTROL:
        case WM831X_GPIO9_CONTROL:
        case WM831X_GPIO10_CONTROL:
        case WM831X_GPIO11_CONTROL:
        case WM831X_GPIO12_CONTROL:
        case WM831X_GPIO13_CONTROL:
        case WM831X_GPIO14_CONTROL:
        case WM831X_GPIO15_CONTROL:
        case WM831X_GPIO16_CONTROL:
        case WM831X_CHARGER_CONTROL_1:
        case WM831X_CHARGER_CONTROL_2:
        case WM831X_CHARGER_STATUS:
        case WM831X_BACKUP_CHARGER_CONTROL:
        case WM831X_STATUS_LED_1:
        case WM831X_STATUS_LED_2:
        case WM831X_CURRENT_SINK_1:
        case WM831X_CURRENT_SINK_2:
        case WM831X_DCDC_ENABLE:
        case WM831X_LDO_ENABLE:
        case WM831X_DCDC_STATUS:
        case WM831X_LDO_STATUS:
        case WM831X_DCDC_UV_STATUS:
        case WM831X_LDO_UV_STATUS:
        case WM831X_DC1_CONTROL_1:
        case WM831X_DC1_CONTROL_2:
        case WM831X_DC1_ON_CONFIG:
        case WM831X_DC1_SLEEP_CONTROL:
        case WM831X_DC1_DVS_CONTROL:
        case WM831X_DC2_CONTROL_1:
        case WM831X_DC2_CONTROL_2:
        case WM831X_DC2_ON_CONFIG:
        case WM831X_DC2_SLEEP_CONTROL:
        case WM831X_DC2_DVS_CONTROL:
        case WM831X_DC3_CONTROL_1:
        case WM831X_DC3_CONTROL_2:
        case WM831X_DC3_ON_CONFIG:
        case WM831X_DC3_SLEEP_CONTROL:
        case WM831X_DC4_CONTROL:
        case WM831X_DC4_SLEEP_CONTROL:
        case WM831X_EPE1_CONTROL:
        case WM831X_EPE2_CONTROL:
        case WM831X_LDO1_CONTROL:
        case WM831X_LDO1_ON_CONTROL:
        case WM831X_LDO1_SLEEP_CONTROL:
        case WM831X_LDO2_CONTROL:
        case WM831X_LDO2_ON_CONTROL:
        case WM831X_LDO2_SLEEP_CONTROL:
        case WM831X_LDO3_CONTROL:
        case WM831X_LDO3_ON_CONTROL:
        case WM831X_LDO3_SLEEP_CONTROL:
        case WM831X_LDO4_CONTROL:
        case WM831X_LDO4_ON_CONTROL:
        case WM831X_LDO4_SLEEP_CONTROL:
        case WM831X_LDO5_CONTROL:
        case WM831X_LDO5_ON_CONTROL:
        case WM831X_LDO5_SLEEP_CONTROL:
        case WM831X_LDO6_CONTROL:
        case WM831X_LDO6_ON_CONTROL:
        case WM831X_LDO6_SLEEP_CONTROL:
        case WM831X_LDO7_CONTROL:
        case WM831X_LDO7_ON_CONTROL:
        case WM831X_LDO7_SLEEP_CONTROL:
        case WM831X_LDO8_CONTROL:
        case WM831X_LDO8_ON_CONTROL:
        case WM831X_LDO8_SLEEP_CONTROL:
        case WM831X_LDO9_CONTROL:
        case WM831X_LDO9_ON_CONTROL:
        case WM831X_LDO9_SLEEP_CONTROL:
        case WM831X_LDO10_CONTROL:
        case WM831X_LDO10_ON_CONTROL:
        case WM831X_LDO10_SLEEP_CONTROL:
        case WM831X_LDO11_ON_CONTROL:
        case WM831X_LDO11_SLEEP_CONTROL:
        case WM831X_POWER_GOOD_SOURCE_1:
        case WM831X_POWER_GOOD_SOURCE_2:
        case WM831X_CLOCK_CONTROL_1:
        case WM831X_CLOCK_CONTROL_2:
        case WM831X_FLL_CONTROL_1:
        case WM831X_FLL_CONTROL_2:
        case WM831X_FLL_CONTROL_3:
        case WM831X_FLL_CONTROL_4:
        case WM831X_FLL_CONTROL_5:
        case WM831X_UNIQUE_ID_1:
        case WM831X_UNIQUE_ID_2:
        case WM831X_UNIQUE_ID_3:
        case WM831X_UNIQUE_ID_4:
        case WM831X_UNIQUE_ID_5:
        case WM831X_UNIQUE_ID_6:
        case WM831X_UNIQUE_ID_7:
        case WM831X_UNIQUE_ID_8:
        case WM831X_FACTORY_OTP_ID:
        case WM831X_FACTORY_OTP_1:
        case WM831X_FACTORY_OTP_2:
        case WM831X_FACTORY_OTP_3:
        case WM831X_FACTORY_OTP_4:
        case WM831X_FACTORY_OTP_5:
        case WM831X_CUSTOMER_OTP_ID:
        case WM831X_DC1_OTP_CONTROL:
        case WM831X_DC2_OTP_CONTROL:
        case WM831X_DC3_OTP_CONTROL:
        case WM831X_LDO1_2_OTP_CONTROL:
        case WM831X_LDO3_4_OTP_CONTROL:
        case WM831X_LDO5_6_OTP_CONTROL:
        case WM831X_LDO7_8_OTP_CONTROL:
        case WM831X_LDO9_10_OTP_CONTROL:
        case WM831X_LDO11_EPE_CONTROL:
        case WM831X_GPIO1_OTP_CONTROL:
        case WM831X_GPIO2_OTP_CONTROL:
        case WM831X_GPIO3_OTP_CONTROL:
        case WM831X_GPIO4_OTP_CONTROL:
        case WM831X_GPIO5_OTP_CONTROL:
        case WM831X_GPIO6_OTP_CONTROL:
        case WM831X_DBE_CHECK_DATA:
                return true;
        default:
                return false;
        }
}

static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
{
        struct wm831x *wm831x = dev_get_drvdata(dev);

        if (wm831x_reg_locked(wm831x, reg))
                return false;

        switch (reg) {
        case WM831X_SYSVDD_CONTROL:
        case WM831X_THERMAL_MONITORING:
        case WM831X_POWER_STATE:
        case WM831X_WATCHDOG:
        case WM831X_ON_PIN_CONTROL:
        case WM831X_RESET_CONTROL:
        case WM831X_CONTROL_INTERFACE:
        case WM831X_SECURITY_KEY:
        case WM831X_SOFTWARE_SCRATCH:
        case WM831X_OTP_CONTROL:
        case WM831X_GPIO_LEVEL:
        case WM831X_INTERRUPT_STATUS_1:
        case WM831X_INTERRUPT_STATUS_2:
        case WM831X_INTERRUPT_STATUS_3:
        case WM831X_INTERRUPT_STATUS_4:
        case WM831X_INTERRUPT_STATUS_5:
        case WM831X_IRQ_CONFIG:
        case WM831X_SYSTEM_INTERRUPTS_MASK:
        case WM831X_INTERRUPT_STATUS_1_MASK:
        case WM831X_INTERRUPT_STATUS_2_MASK:
        case WM831X_INTERRUPT_STATUS_3_MASK:
        case WM831X_INTERRUPT_STATUS_4_MASK:
        case WM831X_INTERRUPT_STATUS_5_MASK:
        case WM831X_RTC_TIME_1:
        case WM831X_RTC_TIME_2:
        case WM831X_RTC_ALARM_1:
        case WM831X_RTC_ALARM_2:
        case WM831X_RTC_CONTROL:
        case WM831X_RTC_TRIM:
        case WM831X_TOUCH_CONTROL_1:
        case WM831X_TOUCH_CONTROL_2:
        case WM831X_AUXADC_CONTROL:
        case WM831X_AUXADC_SOURCE:
        case WM831X_COMPARATOR_CONTROL:
        case WM831X_COMPARATOR_1:
        case WM831X_COMPARATOR_2:
        case WM831X_COMPARATOR_3:
        case WM831X_COMPARATOR_4:
        case WM831X_GPIO1_CONTROL:
        case WM831X_GPIO2_CONTROL:
        case WM831X_GPIO3_CONTROL:
        case WM831X_GPIO4_CONTROL:
        case WM831X_GPIO5_CONTROL:
        case WM831X_GPIO6_CONTROL:
        case WM831X_GPIO7_CONTROL:
        case WM831X_GPIO8_CONTROL:
        case WM831X_GPIO9_CONTROL:
        case WM831X_GPIO10_CONTROL:
        case WM831X_GPIO11_CONTROL:
        case WM831X_GPIO12_CONTROL:
        case WM831X_GPIO13_CONTROL:
        case WM831X_GPIO14_CONTROL:
        case WM831X_GPIO15_CONTROL:
        case WM831X_GPIO16_CONTROL:
        case WM831X_CHARGER_CONTROL_1:
        case WM831X_CHARGER_CONTROL_2:
        case WM831X_CHARGER_STATUS:
        case WM831X_BACKUP_CHARGER_CONTROL:
        case WM831X_STATUS_LED_1:
        case WM831X_STATUS_LED_2:
        case WM831X_CURRENT_SINK_1:
        case WM831X_CURRENT_SINK_2:
        case WM831X_DCDC_ENABLE:
        case WM831X_LDO_ENABLE:
        case WM831X_DC1_CONTROL_1:
        case WM831X_DC1_CONTROL_2:
        case WM831X_DC1_ON_CONFIG:
        case WM831X_DC1_SLEEP_CONTROL:
        case WM831X_DC1_DVS_CONTROL:
        case WM831X_DC2_CONTROL_1:
        case WM831X_DC2_CONTROL_2:
        case WM831X_DC2_ON_CONFIG:
        case WM831X_DC2_SLEEP_CONTROL:
        case WM831X_DC2_DVS_CONTROL:
        case WM831X_DC3_CONTROL_1:
        case WM831X_DC3_CONTROL_2:
        case WM831X_DC3_ON_CONFIG:
        case WM831X_DC3_SLEEP_CONTROL:
        case WM831X_DC4_CONTROL:
        case WM831X_DC4_SLEEP_CONTROL:
        case WM831X_EPE1_CONTROL:
        case WM831X_EPE2_CONTROL:
        case WM831X_LDO1_CONTROL:
        case WM831X_LDO1_ON_CONTROL:
        case WM831X_LDO1_SLEEP_CONTROL:
        case WM831X_LDO2_CONTROL:
        case WM831X_LDO2_ON_CONTROL:
        case WM831X_LDO2_SLEEP_CONTROL:
        case WM831X_LDO3_CONTROL:
        case WM831X_LDO3_ON_CONTROL:
        case WM831X_LDO3_SLEEP_CONTROL:
        case WM831X_LDO4_CONTROL:
        case WM831X_LDO4_ON_CONTROL:
        case WM831X_LDO4_SLEEP_CONTROL:
        case WM831X_LDO5_CONTROL:
        case WM831X_LDO5_ON_CONTROL:
        case WM831X_LDO5_SLEEP_CONTROL:
        case WM831X_LDO6_CONTROL:
        case WM831X_LDO6_ON_CONTROL:
        case WM831X_LDO6_SLEEP_CONTROL:
        case WM831X_LDO7_CONTROL:
        case WM831X_LDO7_ON_CONTROL:
        case WM831X_LDO7_SLEEP_CONTROL:
        case WM831X_LDO8_CONTROL:
        case WM831X_LDO8_ON_CONTROL:
        case WM831X_LDO8_SLEEP_CONTROL:
        case WM831X_LDO9_CONTROL:
        case WM831X_LDO9_ON_CONTROL:
        case WM831X_LDO9_SLEEP_CONTROL:
        case WM831X_LDO10_CONTROL:
        case WM831X_LDO10_ON_CONTROL:
        case WM831X_LDO10_SLEEP_CONTROL:
        case WM831X_LDO11_ON_CONTROL:
        case WM831X_LDO11_SLEEP_CONTROL:
        case WM831X_POWER_GOOD_SOURCE_1:
        case WM831X_POWER_GOOD_SOURCE_2:
        case WM831X_CLOCK_CONTROL_1:
        case WM831X_CLOCK_CONTROL_2:
        case WM831X_FLL_CONTROL_1:
        case WM831X_FLL_CONTROL_2:
        case WM831X_FLL_CONTROL_3:
        case WM831X_FLL_CONTROL_4:
        case WM831X_FLL_CONTROL_5:
                return true;
        default:
                return false;
        }
}

static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
{
        switch (reg) {
        case WM831X_SYSTEM_STATUS:
        case WM831X_ON_SOURCE:
        case WM831X_OFF_SOURCE:
        case WM831X_GPIO_LEVEL:
        case WM831X_SYSTEM_INTERRUPTS:
        case WM831X_INTERRUPT_STATUS_1:
        case WM831X_INTERRUPT_STATUS_2:
        case WM831X_INTERRUPT_STATUS_3:
        case WM831X_INTERRUPT_STATUS_4:
        case WM831X_INTERRUPT_STATUS_5:
        case WM831X_RTC_TIME_1:
        case WM831X_RTC_TIME_2:
        case WM831X_TOUCH_DATA_X:
        case WM831X_TOUCH_DATA_Y:
        case WM831X_TOUCH_DATA_Z:
        case WM831X_AUXADC_DATA:
        case WM831X_CHARGER_STATUS:
        case WM831X_DCDC_STATUS:
        case WM831X_LDO_STATUS:
        case WM831X_DCDC_UV_STATUS:
        case WM831X_LDO_UV_STATUS:
                return true;
        default:
                return false;
        }
}

/**
 * wm831x_reg_read: Read a single WM831x register.
 *
 * @wm831x: Device to read from.
 * @reg: Register to read.
 */
int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
{
        unsigned int val;
        int ret;

        ret = regmap_read(wm831x->regmap, reg, &val);

        if (ret < 0)
                return ret;
        else
                return val;
}
EXPORT_SYMBOL_GPL(wm831x_reg_read);

/**
 * wm831x_bulk_read: Read multiple WM831x registers
 *
 * @wm831x: Device to read from
 * @reg: First register
 * @count: Number of registers
 * @buf: Buffer to fill.
 */
int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
                     int count, u16 *buf)
{
        return regmap_bulk_read(wm831x->regmap, reg, buf, count);
}
EXPORT_SYMBOL_GPL(wm831x_bulk_read);

static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
                        int bytes, void *src)
{
        u16 *buf = src;
        int i, ret;

        BUG_ON(bytes % 2);
        BUG_ON(bytes <= 0);

        for (i = 0; i < bytes / 2; i++) {
                if (wm831x_reg_locked(wm831x, reg))
                        return -EPERM;

                dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
                         buf[i], reg + i, reg + i);
                ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
                if (ret != 0)
                        return ret;
        }

        return 0;
}

/**
 * wm831x_reg_write: Write a single WM831x register.
 *
 * @wm831x: Device to write to.
 * @reg: Register to write to.
 * @val: Value to write.
 */
int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
                     unsigned short val)
{
        int ret;

        mutex_lock(&wm831x->io_lock);

        ret = wm831x_write(wm831x, reg, 2, &val);

        mutex_unlock(&wm831x->io_lock);

        return ret;
}
EXPORT_SYMBOL_GPL(wm831x_reg_write);

/**
 * wm831x_set_bits: Set the value of a bitfield in a WM831x register
 *
 * @wm831x: Device to write to.
 * @reg: Register to write to.
 * @mask: Mask of bits to set.
 * @val: Value to set (unshifted)
 */
int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
                    unsigned short mask, unsigned short val)
{
        int ret;

        mutex_lock(&wm831x->io_lock);

        if (!wm831x_reg_locked(wm831x, reg))
                ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
        else
                ret = -EPERM;

        mutex_unlock(&wm831x->io_lock);

        return ret;
}
EXPORT_SYMBOL_GPL(wm831x_set_bits);

static const struct resource wm831x_dcdc1_resources[] = {
        {
                .start = WM831X_DC1_CONTROL_1,
                .end   = WM831X_DC1_DVS_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC1, "UV"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC1, "HC"),
};


static const struct resource wm831x_dcdc2_resources[] = {
        {
                .start = WM831X_DC2_CONTROL_1,
                .end   = WM831X_DC2_DVS_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC2, "UV"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC2, "HC"),
};

static const struct resource wm831x_dcdc3_resources[] = {
        {
                .start = WM831X_DC3_CONTROL_1,
                .end   = WM831X_DC3_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC3, "UV"),
};

static const struct resource wm831x_dcdc4_resources[] = {
        {
                .start = WM831X_DC4_CONTROL,
                .end   = WM831X_DC4_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
};

static const struct resource wm8320_dcdc4_buck_resources[] = {
        {
                .start = WM831X_DC4_CONTROL,
                .end   = WM832X_DC4_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
};

static const struct resource wm831x_gpio_resources[] = {
        {
                .start = WM831X_IRQ_GPIO_1,
                .end   = WM831X_IRQ_GPIO_16,
                .flags = IORESOURCE_IRQ,
        },
};

static const struct resource wm831x_isink1_resources[] = {
        {
                .start = WM831X_CURRENT_SINK_1,
                .end   = WM831X_CURRENT_SINK_1,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ(WM831X_IRQ_CS1),
};

static const struct resource wm831x_isink2_resources[] = {
        {
                .start = WM831X_CURRENT_SINK_2,
                .end   = WM831X_CURRENT_SINK_2,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ(WM831X_IRQ_CS2),
};

static const struct resource wm831x_ldo1_resources[] = {
        {
                .start = WM831X_LDO1_CONTROL,
                .end   = WM831X_LDO1_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO1, "UV"),
};

static const struct resource wm831x_ldo2_resources[] = {
        {
                .start = WM831X_LDO2_CONTROL,
                .end   = WM831X_LDO2_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO2, "UV"),
};

static const struct resource wm831x_ldo3_resources[] = {
        {
                .start = WM831X_LDO3_CONTROL,
                .end   = WM831X_LDO3_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO3, "UV"),
};

static const struct resource wm831x_ldo4_resources[] = {
        {
                .start = WM831X_LDO4_CONTROL,
                .end   = WM831X_LDO4_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO4, "UV"),
};

static const struct resource wm831x_ldo5_resources[] = {
        {
                .start = WM831X_LDO5_CONTROL,
                .end   = WM831X_LDO5_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO5, "UV"),
};

static const struct resource wm831x_ldo6_resources[] = {
        {
                .start = WM831X_LDO6_CONTROL,
                .end   = WM831X_LDO6_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO6, "UV"),
};

static const struct resource wm831x_ldo7_resources[] = {
        {
                .start = WM831X_LDO7_CONTROL,
                .end   = WM831X_LDO7_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO7, "UV"),
};

static const struct resource wm831x_ldo8_resources[] = {
        {
                .start = WM831X_LDO8_CONTROL,
                .end   = WM831X_LDO8_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO8, "UV"),
};

static const struct resource wm831x_ldo9_resources[] = {
        {
                .start = WM831X_LDO9_CONTROL,
                .end   = WM831X_LDO9_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO9, "UV"),
};

static const struct resource wm831x_ldo10_resources[] = {
        {
                .start = WM831X_LDO10_CONTROL,
                .end   = WM831X_LDO10_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO10, "UV"),
};

static const struct resource wm831x_ldo11_resources[] = {
        {
                .start = WM831X_LDO11_ON_CONTROL,
                .end   = WM831X_LDO11_SLEEP_CONTROL,
                .flags = IORESOURCE_REG,
        },
};

static const struct resource wm831x_on_resources[] = {
        DEFINE_RES_IRQ(WM831X_IRQ_ON),
};


static const struct resource wm831x_power_resources[] = {
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_SYSLO, "SYSLO"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_PWR_SRC, "PWR SRC"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_USB_CURR, "USB CURR"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_HOT, "BATT HOT"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_COLD, "BATT COLD"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_FAIL, "BATT FAIL"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_OV, "OV"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_END, "END"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_TO, "TO"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_MODE, "MODE"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_START, "START"),
};

static const struct resource wm831x_rtc_resources[] = {
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_PER, "PER"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_ALM, "ALM"),
};

static const struct resource wm831x_status1_resources[] = {
        {
                .start = WM831X_STATUS_LED_1,
                .end   = WM831X_STATUS_LED_1,
                .flags = IORESOURCE_REG,
        },
};

static const struct resource wm831x_status2_resources[] = {
        {
                .start = WM831X_STATUS_LED_2,
                .end   = WM831X_STATUS_LED_2,
                .flags = IORESOURCE_REG,
        },
};

static const struct resource wm831x_touch_resources[] = {
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHPD, "TCHPD"),
        DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHDATA, "TCHDATA"),
};

static const struct resource wm831x_wdt_resources[] = {
        DEFINE_RES_IRQ(WM831X_IRQ_WDOG_TO),
};

static const struct mfd_cell wm8310_devs[] = {
        {
                .name = "wm831x-backup",
        },
        {
                .name = "wm831x-buckv",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
                .resources = wm831x_dcdc1_resources,
        },
        {
                .name = "wm831x-buckv",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
                .resources = wm831x_dcdc2_resources,
        },
        {
                .name = "wm831x-buckp",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
                .resources = wm831x_dcdc3_resources,
        },
        {
                .name = "wm831x-boostp",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
                .resources = wm831x_dcdc4_resources,
        },
        {
                .name = "wm831x-clk",
        },
        {
                .name = "wm831x-epe",
                .id = 1,
        },
        {
                .name = "wm831x-epe",
                .id = 2,
        },
        {
                .name = "wm831x-gpio",
                .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
                .resources = wm831x_gpio_resources,
        },
        {
                .name = "wm831x-hwmon",
        },
        {
                .name = "wm831x-isink",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
                .resources = wm831x_isink1_resources,
        },
        {
                .name = "wm831x-isink",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
                .resources = wm831x_isink2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
                .resources = wm831x_ldo1_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
                .resources = wm831x_ldo2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
                .resources = wm831x_ldo3_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
                .resources = wm831x_ldo4_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 5,
                .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
                .resources = wm831x_ldo5_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 6,
                .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
                .resources = wm831x_ldo6_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 7,
                .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
                .resources = wm831x_ldo7_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 8,
                .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
                .resources = wm831x_ldo8_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 9,
                .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
                .resources = wm831x_ldo9_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 10,
                .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
                .resources = wm831x_ldo10_resources,
        },
        {
                .name = "wm831x-alive-ldo",
                .id = 11,
                .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
                .resources = wm831x_ldo11_resources,
        },
        {
                .name = "wm831x-on",
                .num_resources = ARRAY_SIZE(wm831x_on_resources),
                .resources = wm831x_on_resources,
        },
        {
                .name = "wm831x-power",
                .num_resources = ARRAY_SIZE(wm831x_power_resources),
                .resources = wm831x_power_resources,
        },
        {
                .name = "wm831x-status",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_status1_resources),
                .resources = wm831x_status1_resources,
        },
        {
                .name = "wm831x-status",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_status2_resources),
                .resources = wm831x_status2_resources,
        },
        {
                .name = "wm831x-watchdog",
                .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
                .resources = wm831x_wdt_resources,
        },
};

static const struct mfd_cell wm8311_devs[] = {
        {
                .name = "wm831x-backup",
        },
        {
                .name = "wm831x-buckv",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
                .resources = wm831x_dcdc1_resources,
        },
        {
                .name = "wm831x-buckv",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
                .resources = wm831x_dcdc2_resources,
        },
        {
                .name = "wm831x-buckp",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
                .resources = wm831x_dcdc3_resources,
        },
        {
                .name = "wm831x-boostp",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
                .resources = wm831x_dcdc4_resources,
        },
        {
                .name = "wm831x-clk",
        },
        {
                .name = "wm831x-epe",
                .id = 1,
        },
        {
                .name = "wm831x-epe",
                .id = 2,
        },
        {
                .name = "wm831x-gpio",
                .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
                .resources = wm831x_gpio_resources,
        },
        {
                .name = "wm831x-hwmon",
        },
        {
                .name = "wm831x-isink",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
                .resources = wm831x_isink1_resources,
        },
        {
                .name = "wm831x-isink",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
                .resources = wm831x_isink2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
                .resources = wm831x_ldo1_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
                .resources = wm831x_ldo2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
                .resources = wm831x_ldo3_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
                .resources = wm831x_ldo4_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 5,
                .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
                .resources = wm831x_ldo5_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 7,
                .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
                .resources = wm831x_ldo7_resources,
        },
        {
                .name = "wm831x-alive-ldo",
                .id = 11,
                .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
                .resources = wm831x_ldo11_resources,
        },
        {
                .name = "wm831x-on",
                .num_resources = ARRAY_SIZE(wm831x_on_resources),
                .resources = wm831x_on_resources,
        },
        {
                .name = "wm831x-power",
                .num_resources = ARRAY_SIZE(wm831x_power_resources),
                .resources = wm831x_power_resources,
        },
        {
                .name = "wm831x-status",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_status1_resources),
                .resources = wm831x_status1_resources,
        },
        {
                .name = "wm831x-status",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_status2_resources),
                .resources = wm831x_status2_resources,
        },
        {
                .name = "wm831x-watchdog",
                .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
                .resources = wm831x_wdt_resources,
        },
};

static const struct mfd_cell wm8312_devs[] = {
        {
                .name = "wm831x-backup",
        },
        {
                .name = "wm831x-buckv",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
                .resources = wm831x_dcdc1_resources,
        },
        {
                .name = "wm831x-buckv",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
                .resources = wm831x_dcdc2_resources,
        },
        {
                .name = "wm831x-buckp",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
                .resources = wm831x_dcdc3_resources,
        },
        {
                .name = "wm831x-boostp",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
                .resources = wm831x_dcdc4_resources,
        },
        {
                .name = "wm831x-clk",
        },
        {
                .name = "wm831x-epe",
                .id = 1,
        },
        {
                .name = "wm831x-epe",
                .id = 2,
        },
        {
                .name = "wm831x-gpio",
                .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
                .resources = wm831x_gpio_resources,
        },
        {
                .name = "wm831x-hwmon",
        },
        {
                .name = "wm831x-isink",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
                .resources = wm831x_isink1_resources,
        },
        {
                .name = "wm831x-isink",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
                .resources = wm831x_isink2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
                .resources = wm831x_ldo1_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
                .resources = wm831x_ldo2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
                .resources = wm831x_ldo3_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
                .resources = wm831x_ldo4_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 5,
                .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
                .resources = wm831x_ldo5_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 6,
                .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
                .resources = wm831x_ldo6_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 7,
                .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
                .resources = wm831x_ldo7_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 8,
                .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
                .resources = wm831x_ldo8_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 9,
                .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
                .resources = wm831x_ldo9_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 10,
                .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
                .resources = wm831x_ldo10_resources,
        },
        {
                .name = "wm831x-alive-ldo",
                .id = 11,
                .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
                .resources = wm831x_ldo11_resources,
        },
        {
                .name = "wm831x-on",
                .num_resources = ARRAY_SIZE(wm831x_on_resources),
                .resources = wm831x_on_resources,
        },
        {
                .name = "wm831x-power",
                .num_resources = ARRAY_SIZE(wm831x_power_resources),
                .resources = wm831x_power_resources,
        },
        {
                .name = "wm831x-status",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_status1_resources),
                .resources = wm831x_status1_resources,
        },
        {
                .name = "wm831x-status",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_status2_resources),
                .resources = wm831x_status2_resources,
        },
        {
                .name = "wm831x-watchdog",
                .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
                .resources = wm831x_wdt_resources,
        },
};

static const struct mfd_cell wm8320_devs[] = {
        {
                .name = "wm831x-backup",
        },
        {
                .name = "wm831x-buckv",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
                .resources = wm831x_dcdc1_resources,
        },
        {
                .name = "wm831x-buckv",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
                .resources = wm831x_dcdc2_resources,
        },
        {
                .name = "wm831x-buckp",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
                .resources = wm831x_dcdc3_resources,
        },
        {
                .name = "wm831x-buckp",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
                .resources = wm8320_dcdc4_buck_resources,
        },
        {
                .name = "wm831x-clk",
        },
        {
                .name = "wm831x-gpio",
                .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
                .resources = wm831x_gpio_resources,
        },
        {
                .name = "wm831x-hwmon",
        },
        {
                .name = "wm831x-ldo",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
                .resources = wm831x_ldo1_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
                .resources = wm831x_ldo2_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 3,
                .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
                .resources = wm831x_ldo3_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 4,
                .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
                .resources = wm831x_ldo4_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 5,
                .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
                .resources = wm831x_ldo5_resources,
        },
        {
                .name = "wm831x-ldo",
                .id = 6,
                .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
                .resources = wm831x_ldo6_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 7,
                .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
                .resources = wm831x_ldo7_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 8,
                .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
                .resources = wm831x_ldo8_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 9,
                .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
                .resources = wm831x_ldo9_resources,
        },
        {
                .name = "wm831x-aldo",
                .id = 10,
                .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
                .resources = wm831x_ldo10_resources,
        },
        {
                .name = "wm831x-alive-ldo",
                .id = 11,
                .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
                .resources = wm831x_ldo11_resources,
        },
        {
                .name = "wm831x-on",
                .num_resources = ARRAY_SIZE(wm831x_on_resources),
                .resources = wm831x_on_resources,
        },
        {
                .name = "wm831x-status",
                .id = 1,
                .num_resources = ARRAY_SIZE(wm831x_status1_resources),
                .resources = wm831x_status1_resources,
        },
        {
                .name = "wm831x-status",
                .id = 2,
                .num_resources = ARRAY_SIZE(wm831x_status2_resources),
                .resources = wm831x_status2_resources,
        },
        {
                .name = "wm831x-watchdog",
                .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
                .resources = wm831x_wdt_resources,
        },
};

static const struct mfd_cell touch_devs[] = {
        {
                .name = "wm831x-touch",
                .num_resources = ARRAY_SIZE(wm831x_touch_resources),
                .resources = wm831x_touch_resources,
        },
};

static const struct mfd_cell rtc_devs[] = {
        {
                .name = "wm831x-rtc",
                .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
                .resources = wm831x_rtc_resources,
        },
};

static const struct mfd_cell backlight_devs[] = {
        {
                .name = "wm831x-backlight",
        },
};

struct regmap_config wm831x_regmap_config = {
        .reg_bits = 16,
        .val_bits = 16,

        .cache_type = REGCACHE_MAPLE,

        .max_register = WM831X_DBE_CHECK_DATA,
        .readable_reg = wm831x_reg_readable,
        .writeable_reg = wm831x_reg_writeable,
        .volatile_reg = wm831x_reg_volatile,
};
EXPORT_SYMBOL_GPL(wm831x_regmap_config);

const struct of_device_id wm831x_of_match[] = {
        { .compatible = "wlf,wm8310", .data = (void *)WM8310 },
        { .compatible = "wlf,wm8311", .data = (void *)WM8311 },
        { .compatible = "wlf,wm8312", .data = (void *)WM8312 },
        { .compatible = "wlf,wm8320", .data = (void *)WM8320 },
        { .compatible = "wlf,wm8321", .data = (void *)WM8321 },
        { .compatible = "wlf,wm8325", .data = (void *)WM8325 },
        { .compatible = "wlf,wm8326", .data = (void *)WM8326 },
        { },
};
EXPORT_SYMBOL_GPL(wm831x_of_match);

/*
 * Instantiate the generic non-control parts of the device.
 */
int wm831x_device_init(struct wm831x *wm831x, int irq)
{
        struct wm831x_pdata *pdata = &wm831x->pdata;
        int rev, wm831x_num;
        enum wm831x_parent parent;
        int ret, i;

        mutex_init(&wm831x->io_lock);
        mutex_init(&wm831x->key_lock);
        dev_set_drvdata(wm831x->dev, wm831x);

        wm831x->soft_shutdown = pdata->soft_shutdown;

        ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
        if (ret < 0) {
                dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
                goto err;
        }
        switch (ret) {
        case 0x6204:
        case 0x6246:
                break;
        default:
                dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
                ret = -EINVAL;
                goto err;
        }

        ret = wm831x_reg_read(wm831x, WM831X_REVISION);
        if (ret < 0) {
                dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
                goto err;
        }
        rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;

        ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
        if (ret < 0) {
                dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
                goto err;
        }

        /* Some engineering samples do not have the ID set, rely on
         * the device being registered correctly.
         */
        if (ret == 0) {
                dev_info(wm831x->dev, "Device is an engineering sample\n");
                ret = wm831x->type;
        }

        switch (ret) {
        case WM8310:
                parent = WM8310;
                wm831x->num_gpio = 16;
                wm831x->charger_irq_wake = 1;
                if (rev > 0) {
                        wm831x->has_gpio_ena = 1;
                        wm831x->has_cs_sts = 1;
                }

                dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
                break;

        case WM8311:
                parent = WM8311;
                wm831x->num_gpio = 16;
                wm831x->charger_irq_wake = 1;
                if (rev > 0) {
                        wm831x->has_gpio_ena = 1;
                        wm831x->has_cs_sts = 1;
                }

                dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
                break;

        case WM8312:
                parent = WM8312;
                wm831x->num_gpio = 16;
                wm831x->charger_irq_wake = 1;
                if (rev > 0) {
                        wm831x->has_gpio_ena = 1;
                        wm831x->has_cs_sts = 1;
                }

                dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
                break;

        case WM8320:
                parent = WM8320;
                wm831x->num_gpio = 12;
                dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
                break;

        case WM8321:
                parent = WM8321;
                wm831x->num_gpio = 12;
                dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
                break;

        case WM8325:
                parent = WM8325;
                wm831x->num_gpio = 12;
                dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
                break;

        case WM8326:
                parent = WM8326;
                wm831x->num_gpio = 12;
                dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
                break;

        default:
                dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
                ret = -EINVAL;
                goto err;
        }

        /* This will need revisiting in future but is OK for all
         * current parts.
         */
        if (parent != wm831x->type)
                dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
                         wm831x->type);

        /* Bootstrap the user key */
        ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
        if (ret < 0) {
                dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
                goto err;
        }
        if (ret != 0) {
                dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
                         ret);
                wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
        }
        wm831x->locked = 1;

        if (pdata->pre_init) {
                ret = pdata->pre_init(wm831x);
                if (ret != 0) {
                        dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
                        goto err;
                }
        }

        for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
                if (!pdata->gpio_defaults[i])
                        continue;

                wm831x_reg_write(wm831x,
                                 WM831X_GPIO1_CONTROL + i,
                                 pdata->gpio_defaults[i] & 0xffff);
        }

        /* Multiply by 10 as we have many subdevices of the same type */
        if (pdata->wm831x_num)
                wm831x_num = pdata->wm831x_num * 10;
        else
                wm831x_num = -1;

        ret = wm831x_irq_init(wm831x, irq);
        if (ret != 0)
                goto err;

        wm831x_auxadc_init(wm831x);

        /* The core device is up, instantiate the subdevices. */
        switch (parent) {
        case WM8310:
                ret = mfd_add_devices(wm831x->dev, wm831x_num,
                                      wm8310_devs, ARRAY_SIZE(wm8310_devs),
                                      NULL, 0, NULL);
                break;

        case WM8311:
                ret = mfd_add_devices(wm831x->dev, wm831x_num,
                                      wm8311_devs, ARRAY_SIZE(wm8311_devs),
                                      NULL, 0, NULL);
                if (!pdata->disable_touch)
                        mfd_add_devices(wm831x->dev, wm831x_num,
                                        touch_devs, ARRAY_SIZE(touch_devs),
                                        NULL, 0, NULL);
                break;

        case WM8312:
                ret = mfd_add_devices(wm831x->dev, wm831x_num,
                                      wm8312_devs, ARRAY_SIZE(wm8312_devs),
                                      NULL, 0, NULL);
                if (!pdata->disable_touch)
                        mfd_add_devices(wm831x->dev, wm831x_num,
                                        touch_devs, ARRAY_SIZE(touch_devs),
                                        NULL, 0, NULL);
                break;

        case WM8320:
        case WM8321:
        case WM8325:
        case WM8326:
                ret = mfd_add_devices(wm831x->dev, wm831x_num,
                                      wm8320_devs, ARRAY_SIZE(wm8320_devs),
                                      NULL, 0, NULL);
                break;

        default:
                /* If this happens the bus probe function is buggy */
                BUG();
        }

        if (ret != 0) {
                dev_err(wm831x->dev, "Failed to add children\n");
                goto err_irq;
        }

        /* The RTC can only be used if the 32.768kHz crystal is
         * enabled; this can't be controlled by software at runtime.
         */
        ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
        if (ret < 0) {
                dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
                goto err_irq;
        }

        if (ret & WM831X_XTAL_ENA) {
                ret = mfd_add_devices(wm831x->dev, wm831x_num,
                                      rtc_devs, ARRAY_SIZE(rtc_devs),
                                      NULL, 0, NULL);
                if (ret != 0) {
                        dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
                        goto err_irq;
                }
        } else {
                dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
        }

        if (pdata->backlight) {
                /* Treat errors as non-critical */
                ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
                                      ARRAY_SIZE(backlight_devs), NULL,
                                      0, NULL);
                if (ret < 0)
                        dev_err(wm831x->dev, "Failed to add backlight: %d\n",
                                ret);
        }

        wm831x_otp_init(wm831x);

        if (pdata->post_init) {
                ret = pdata->post_init(wm831x);
                if (ret != 0) {
                        dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
                        goto err_irq;
                }
        }

        return 0;

err_irq:
        wm831x_irq_exit(wm831x);
err:
        mfd_remove_devices(wm831x->dev);
        return ret;
}

int wm831x_device_suspend(struct wm831x *wm831x)
{
        int reg, mask;

        /* If the charger IRQs are a wake source then make sure we ack
         * them even if they're not actively being used (eg, no power
         * driver or no IRQ line wired up) then acknowledge the
         * interrupts otherwise suspend won't last very long.
         */
        if (wm831x->charger_irq_wake) {
                reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);

                mask = WM831X_CHG_BATT_HOT_EINT |
                        WM831X_CHG_BATT_COLD_EINT |
                        WM831X_CHG_BATT_FAIL_EINT |
                        WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
                        WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
                        WM831X_CHG_START_EINT;

                /* If any of the interrupts are masked read the statuses */
                if (reg & mask)
                        reg = wm831x_reg_read(wm831x,
                                              WM831X_INTERRUPT_STATUS_2);

                if (reg & mask) {
                        dev_info(wm831x->dev,
                                 "Acknowledging masked charger IRQs: %x\n",
                                 reg & mask);
                        wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
                                         reg & mask);
                }
        }

        return 0;
}

void wm831x_device_shutdown(struct wm831x *wm831x)
{
        if (wm831x->soft_shutdown) {
                dev_info(wm831x->dev, "Initiating shutdown...\n");
                wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
        }
}
EXPORT_SYMBOL_GPL(wm831x_device_shutdown);