kernel/drivers/mfd/wm831x-core.c

// 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/of.h>
#include <linux/of_device.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_RBTREE,

	.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);