drivers/mfd/max77686-irq.c - arm/linux-arm64-legacy - Git at Google

 /*
  * max77686-irq.c - Interrupt controller support for MAX77686
  *
  * Copyright (C) 2012 Samsung Electronics Co.Ltd
  * Chiwoong Byun <woong.byun@samsung.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  * This driver is based on max8997-irq.c
  */

 #include <linux/err.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
 #include <linux/mfd/max77686.h>
 #include <linux/mfd/max77686-private.h>
 #include <linux/irqdomain.h>
 #include <linux/regmap.h>

 enum {
 	MAX77686_DEBUG_IRQ_INFO = 1 << 0,
 	MAX77686_DEBUG_IRQ_MASK = 1 << 1,
 	MAX77686_DEBUG_IRQ_INT = 1 << 2,
 };

 static int debug_mask = 0;
 module_param(debug_mask, int, 0);
 MODULE_PARM_DESC(debug_mask, "Set debug_mask : 0x0=off 0x1=IRQ_INFO  0x2=IRQ_MASK 0x4=IRQ_INI)");

 static const u8 max77686_mask_reg[] = {
 	[PMIC_INT1] = MAX77686_REG_INT1MSK,
 	[PMIC_INT2] = MAX77686_REG_INT2MSK,
 	[RTC_INT] = MAX77686_RTC_INTM,
 };

 static struct regmap *max77686_get_regmap(struct max77686_dev *max77686,
 				enum max77686_irq_source src)
 {
 	switch (src) {
 	case PMIC_INT1 ... PMIC_INT2:
 		return max77686->regmap;
 	case RTC_INT:
 		return max77686->rtc_regmap;
 	default:
 		return ERR_PTR(-EINVAL);
 	}
 }

 struct max77686_irq_data {
 	int mask;
 	enum max77686_irq_source group;
 };

 #define DECLARE_IRQ(idx, _group, _mask)		\
 	[(idx)] = { .group = (_group), .mask = (_mask) }
 static const struct max77686_irq_data max77686_irqs[] = {
 	DECLARE_IRQ(MAX77686_PMICIRQ_PWRONF,	PMIC_INT1, 1 << 0),
 	DECLARE_IRQ(MAX77686_PMICIRQ_PWRONR,	PMIC_INT1, 1 << 1),
 	DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBF,	PMIC_INT1, 1 << 2),
 	DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBR,	PMIC_INT1, 1 << 3),
 	DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBF,	PMIC_INT1, 1 << 4),
 	DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBR,	PMIC_INT1, 1 << 5),
 	DECLARE_IRQ(MAX77686_PMICIRQ_ONKEY1S,	PMIC_INT1, 1 << 6),
 	DECLARE_IRQ(MAX77686_PMICIRQ_MRSTB,		PMIC_INT1, 1 << 7),
 	DECLARE_IRQ(MAX77686_PMICIRQ_140C,		PMIC_INT2, 1 << 0),
 	DECLARE_IRQ(MAX77686_PMICIRQ_120C,		PMIC_INT2, 1 << 1),
 	DECLARE_IRQ(MAX77686_RTCIRQ_RTC60S,		RTC_INT, 1 << 0),
 	DECLARE_IRQ(MAX77686_RTCIRQ_RTCA1,		RTC_INT, 1 << 1),
 	DECLARE_IRQ(MAX77686_RTCIRQ_RTCA2,		RTC_INT, 1 << 2),
 	DECLARE_IRQ(MAX77686_RTCIRQ_SMPL,		RTC_INT, 1 << 3),
 	DECLARE_IRQ(MAX77686_RTCIRQ_RTC1S,		RTC_INT, 1 << 4),
 	DECLARE_IRQ(MAX77686_RTCIRQ_WTSR,		RTC_INT, 1 << 5),
 };

 static void max77686_irq_lock(struct irq_data *data)
 {
 	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);

 	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
 		pr_info("%s\n", __func__);

 	mutex_lock(&max77686->irqlock);
 }

 static void max77686_irq_sync_unlock(struct irq_data *data)
 {
 	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
 	int i;

 	for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) {
 		u8 mask_reg = max77686_mask_reg[i];
 		struct regmap *map = max77686_get_regmap(max77686, i);

 		if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
 			pr_debug("%s: mask_reg[%d]=0x%x, cur=0x%x\n",
 			__func__, i, mask_reg, max77686->irq_masks_cur[i]);

 		if (mask_reg == MAX77686_REG_INVALID ||
 				IS_ERR_OR_NULL(map))
 			continue;

 		max77686->irq_masks_cache[i] = max77686->irq_masks_cur[i];

 		regmap_write(map, max77686_mask_reg[i],
 				max77686->irq_masks_cur[i]);
 	}

 	mutex_unlock(&max77686->irqlock);
 }

 static const inline struct max77686_irq_data *to_max77686_irq(int irq)
 {
 	struct irq_data *data = irq_get_irq_data(irq);
 	return &max77686_irqs[data->hwirq];
 }

 static void max77686_irq_mask(struct irq_data *data)
 {
 	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
 	const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq);

 	max77686->irq_masks_cur[irq_data->group] |= irq_data->mask;

 	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
 		pr_info("%s: group=%d, cur=0x%x\n",
 			__func__, irq_data->group,
 			max77686->irq_masks_cur[irq_data->group]);
 }

 static void max77686_irq_unmask(struct irq_data *data)
 {
 	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
 	const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq);

 	max77686->irq_masks_cur[irq_data->group] &= ~irq_data->mask;

 	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
 		pr_info("%s: group=%d, cur=0x%x\n",
 			__func__, irq_data->group,
 			max77686->irq_masks_cur[irq_data->group]);
 }

 static struct irq_chip max77686_irq_chip = {
 	.name			= "max77686",
 	.irq_bus_lock		= max77686_irq_lock,
 	.irq_bus_sync_unlock	= max77686_irq_sync_unlock,
 	.irq_mask		= max77686_irq_mask,
 	.irq_unmask		= max77686_irq_unmask,
 };

 static irqreturn_t max77686_irq_thread(int irq, void *data)
 {
 	struct max77686_dev *max77686 = data;
 	unsigned int irq_reg[MAX77686_IRQ_GROUP_NR] = {};
 	unsigned int irq_src;
 	int ret;
 	int i, cur_irq;

 	ret = regmap_read(max77686->regmap,  MAX77686_REG_INTSRC, &irq_src);
 	if (ret < 0) {
 		dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
 				ret);
 		return IRQ_NONE;
 	}

 	if (debug_mask & MAX77686_DEBUG_IRQ_INT)
 		pr_info("%s: irq_src=0x%x\n", __func__, irq_src);

 	if (irq_src == MAX77686_IRQSRC_PMIC) {
 		ret = regmap_bulk_read(max77686->regmap,
 					 MAX77686_REG_INT1, irq_reg, 2);
 		if (ret < 0) {
 			dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
 					ret);
 			return IRQ_NONE;
 		}

 		if (debug_mask & MAX77686_DEBUG_IRQ_INT)
 			pr_info("%s: int1=0x%x, int2=0x%x\n", __func__,
 				 irq_reg[PMIC_INT1], irq_reg[PMIC_INT2]);
 	}

 	if (irq_src & MAX77686_IRQSRC_RTC) {
 		ret = regmap_read(max77686->rtc_regmap,
 					MAX77686_RTC_INT, &irq_reg[RTC_INT]);
 		if (ret < 0) {
 			dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
 					ret);
 			return IRQ_NONE;
 		}

 		if (debug_mask & MAX77686_DEBUG_IRQ_INT)
 			pr_info("%s: rtc int=0x%x\n", __func__,
 							 irq_reg[RTC_INT]);

 	}

 	for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++)
 		irq_reg[i] &= ~max77686->irq_masks_cur[i];

 	for (i = 0; i < MAX77686_IRQ_NR; i++) {
 		if (irq_reg[max77686_irqs[i].group] & max77686_irqs[i].mask) {
 			cur_irq = irq_find_mapping(max77686->irq_domain, i);
 			if (cur_irq)
 				handle_nested_irq(cur_irq);
 		}
 	}

 	return IRQ_HANDLED;
 }

 static int max77686_irq_domain_map(struct irq_domain *d, unsigned int irq,
 					irq_hw_number_t hw)
 {
 	struct max77686_dev *max77686 = d->host_data;

 	irq_set_chip_data(irq, max77686);
 	irq_set_chip_and_handler(irq, &max77686_irq_chip, handle_edge_irq);
 	irq_set_nested_thread(irq, 1);
 #ifdef CONFIG_ARM
 	set_irq_flags(irq, IRQF_VALID);
 #else
 	irq_set_noprobe(irq);
 #endif
 	return 0;
 }

 static struct irq_domain_ops max77686_irq_domain_ops = {
 	.map = max77686_irq_domain_map,
 };

 int max77686_irq_init(struct max77686_dev *max77686)
 {
 	struct irq_domain *domain;
 	int i;
 	int ret;
 	int val;
 	struct regmap *map;

 	mutex_init(&max77686->irqlock);

 	if (max77686->irq_gpio && !max77686->irq) {
 		max77686->irq = gpio_to_irq(max77686->irq_gpio);

 		if (debug_mask & MAX77686_DEBUG_IRQ_INT) {
 			ret = gpio_request(max77686->irq_gpio, "pmic_irq");
 			if (ret < 0) {
 				dev_err(max77686->dev,
 					"Failed to request gpio %d with ret:"
 					"%d\n",	max77686->irq_gpio, ret);
 				return IRQ_NONE;
 			}

 			gpio_direction_input(max77686->irq_gpio);
 			val = gpio_get_value(max77686->irq_gpio);
 			gpio_free(max77686->irq_gpio);
 			pr_info("%s: gpio_irq=%x\n", __func__, val);
 		}
 	}

 	if (!max77686->irq) {
 		dev_err(max77686->dev, "irq is not specified\n");
 		return -ENODEV;
 	}

 	/* Mask individual interrupt sources */
 	for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) {
 		max77686->irq_masks_cur[i] = 0xff;
 		max77686->irq_masks_cache[i] = 0xff;
 		map = max77686_get_regmap(max77686, i);

 		if (IS_ERR_OR_NULL(map))
 			continue;
 		if (max77686_mask_reg[i] == MAX77686_REG_INVALID)
 			continue;

 		regmap_write(map, max77686_mask_reg[i], 0xff);
 	}
 	domain = irq_domain_add_linear(NULL, MAX77686_IRQ_NR,
 					&max77686_irq_domain_ops, max77686);
 	if (!domain) {
 		dev_err(max77686->dev, "could not create irq domain\n");
 		return -ENODEV;
 	}
 	max77686->irq_domain = domain;

 	ret = request_threaded_irq(max77686->irq, NULL, max77686_irq_thread,
 				   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
 				   "max77686-irq", max77686);

 	if (ret)
 		dev_err(max77686->dev, "Failed to request IRQ %d: %d\n",
 			max77686->irq, ret);


 	if (debug_mask & MAX77686_DEBUG_IRQ_INFO)
 		pr_info("%s-\n", __func__);

 	return 0;
 }

 void max77686_irq_exit(struct max77686_dev *max77686)
 {
 	if (max77686->irq)
 		free_irq(max77686->irq, max77686);
 }
	/*
	* max77686-irq.c - Interrupt controller support for MAX77686
	*
	* Copyright (C) 2012 Samsung Electronics Co.Ltd
	* Chiwoong Byun <woong.byun@samsung.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*
	* This driver is based on max8997-irq.c
	*/

	#include <linux/err.h>
	#include <linux/irq.h>
	#include <linux/interrupt.h>
	#include <linux/gpio.h>
	#include <linux/mfd/max77686.h>
	#include <linux/mfd/max77686-private.h>
	#include <linux/irqdomain.h>
	#include <linux/regmap.h>

	enum {
	MAX77686_DEBUG_IRQ_INFO = 1 << 0,
	MAX77686_DEBUG_IRQ_MASK = 1 << 1,
	MAX77686_DEBUG_IRQ_INT = 1 << 2,
	};

	static int debug_mask = 0;
	module_param(debug_mask, int, 0);
	MODULE_PARM_DESC(debug_mask, "Set debug_mask : 0x0=off 0x1=IRQ_INFO 0x2=IRQ_MASK 0x4=IRQ_INI)");

	static const u8 max77686_mask_reg[] = {
	[PMIC_INT1] = MAX77686_REG_INT1MSK,
	[PMIC_INT2] = MAX77686_REG_INT2MSK,
	[RTC_INT] = MAX77686_RTC_INTM,
	};

	static struct regmap max77686_get_regmap(struct max77686_dev max77686,
	enum max77686_irq_source src)
	{
	switch (src) {
	case PMIC_INT1 ... PMIC_INT2:
	return max77686->regmap;
	case RTC_INT:
	return max77686->rtc_regmap;
	default:
	return ERR_PTR(-EINVAL);
	}
	}

	struct max77686_irq_data {
	int mask;
	enum max77686_irq_source group;
	};

	#define DECLARE_IRQ(idx, _group, _mask) \
	[(idx)] = { .group = (_group), .mask = (_mask) }
	static const struct max77686_irq_data max77686_irqs[] = {
	DECLARE_IRQ(MAX77686_PMICIRQ_PWRONF, PMIC_INT1, 1 << 0),
	DECLARE_IRQ(MAX77686_PMICIRQ_PWRONR, PMIC_INT1, 1 << 1),
	DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBF, PMIC_INT1, 1 << 2),
	DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBR, PMIC_INT1, 1 << 3),
	DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBF, PMIC_INT1, 1 << 4),
	DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBR, PMIC_INT1, 1 << 5),
	DECLARE_IRQ(MAX77686_PMICIRQ_ONKEY1S, PMIC_INT1, 1 << 6),
	DECLARE_IRQ(MAX77686_PMICIRQ_MRSTB, PMIC_INT1, 1 << 7),
	DECLARE_IRQ(MAX77686_PMICIRQ_140C, PMIC_INT2, 1 << 0),
	DECLARE_IRQ(MAX77686_PMICIRQ_120C, PMIC_INT2, 1 << 1),
	DECLARE_IRQ(MAX77686_RTCIRQ_RTC60S, RTC_INT, 1 << 0),
	DECLARE_IRQ(MAX77686_RTCIRQ_RTCA1, RTC_INT, 1 << 1),
	DECLARE_IRQ(MAX77686_RTCIRQ_RTCA2, RTC_INT, 1 << 2),
	DECLARE_IRQ(MAX77686_RTCIRQ_SMPL, RTC_INT, 1 << 3),
	DECLARE_IRQ(MAX77686_RTCIRQ_RTC1S, RTC_INT, 1 << 4),
	DECLARE_IRQ(MAX77686_RTCIRQ_WTSR, RTC_INT, 1 << 5),
	};

	static void max77686_irq_lock(struct irq_data *data)
	{
	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);

	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
	pr_info("%s\n", __func__);

	mutex_lock(&max77686->irqlock);
	}

	static void max77686_irq_sync_unlock(struct irq_data *data)
	{
	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
	int i;

	for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) {
	u8 mask_reg = max77686_mask_reg[i];
	struct regmap *map = max77686_get_regmap(max77686, i);

	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
	pr_debug("%s: mask_reg[%d]=0x%x, cur=0x%x\n",
	__func__, i, mask_reg, max77686->irq_masks_cur[i]);

	if (mask_reg == MAX77686_REG_INVALID \|\|
	IS_ERR_OR_NULL(map))
	continue;

	max77686->irq_masks_cache[i] = max77686->irq_masks_cur[i];

	regmap_write(map, max77686_mask_reg[i],
	max77686->irq_masks_cur[i]);
	}

	mutex_unlock(&max77686->irqlock);
	}

	static const inline struct max77686_irq_data *to_max77686_irq(int irq)
	{
	struct irq_data *data = irq_get_irq_data(irq);
	return &max77686_irqs[data->hwirq];
	}

	static void max77686_irq_mask(struct irq_data *data)
	{
	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
	const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq);

	max77686->irq_masks_cur[irq_data->group] \|= irq_data->mask;

	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
	pr_info("%s: group=%d, cur=0x%x\n",
	__func__, irq_data->group,
	max77686->irq_masks_cur[irq_data->group]);
	}

	static void max77686_irq_unmask(struct irq_data *data)
	{
	struct max77686_dev *max77686 = irq_get_chip_data(data->irq);
	const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq);

	max77686->irq_masks_cur[irq_data->group] &= ~irq_data->mask;

	if (debug_mask & MAX77686_DEBUG_IRQ_MASK)
	pr_info("%s: group=%d, cur=0x%x\n",
	__func__, irq_data->group,
	max77686->irq_masks_cur[irq_data->group]);
	}

	static struct irq_chip max77686_irq_chip = {
	.name = "max77686",
	.irq_bus_lock = max77686_irq_lock,
	.irq_bus_sync_unlock = max77686_irq_sync_unlock,
	.irq_mask = max77686_irq_mask,
	.irq_unmask = max77686_irq_unmask,
	};

	static irqreturn_t max77686_irq_thread(int irq, void *data)
	{
	struct max77686_dev *max77686 = data;
	unsigned int irq_reg[MAX77686_IRQ_GROUP_NR] = {};
	unsigned int irq_src;
	int ret;
	int i, cur_irq;

	ret = regmap_read(max77686->regmap, MAX77686_REG_INTSRC, &irq_src);
	if (ret < 0) {
	dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
	ret);
	return IRQ_NONE;
	}

	if (debug_mask & MAX77686_DEBUG_IRQ_INT)
	pr_info("%s: irq_src=0x%x\n", __func__, irq_src);

	if (irq_src == MAX77686_IRQSRC_PMIC) {
	ret = regmap_bulk_read(max77686->regmap,
	MAX77686_REG_INT1, irq_reg, 2);
	if (ret < 0) {
	dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
	ret);
	return IRQ_NONE;
	}

	if (debug_mask & MAX77686_DEBUG_IRQ_INT)
	pr_info("%s: int1=0x%x, int2=0x%x\n", __func__,
	irq_reg[PMIC_INT1], irq_reg[PMIC_INT2]);
	}

	if (irq_src & MAX77686_IRQSRC_RTC) {
	ret = regmap_read(max77686->rtc_regmap,
	MAX77686_RTC_INT, &irq_reg[RTC_INT]);
	if (ret < 0) {
	dev_err(max77686->dev, "Failed to read interrupt source: %d\n",
	ret);
	return IRQ_NONE;
	}

	if (debug_mask & MAX77686_DEBUG_IRQ_INT)
	pr_info("%s: rtc int=0x%x\n", __func__,
	irq_reg[RTC_INT]);

	}

	for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++)
	irq_reg[i] &= ~max77686->irq_masks_cur[i];

	for (i = 0; i < MAX77686_IRQ_NR; i++) {
	if (irq_reg[max77686_irqs[i].group] & max77686_irqs[i].mask) {
	cur_irq = irq_find_mapping(max77686->irq_domain, i);
	if (cur_irq)
	handle_nested_irq(cur_irq);
	}
	}

	return IRQ_HANDLED;
	}

	static int max77686_irq_domain_map(struct irq_domain *d, unsigned int irq,
	irq_hw_number_t hw)
	{
	struct max77686_dev *max77686 = d->host_data;

	irq_set_chip_data(irq, max77686);
	irq_set_chip_and_handler(irq, &max77686_irq_chip, handle_edge_irq);
	irq_set_nested_thread(irq, 1);
	#ifdef CONFIG_ARM
	set_irq_flags(irq, IRQF_VALID);
	#else
	irq_set_noprobe(irq);
	#endif
	return 0;
	}

	static struct irq_domain_ops max77686_irq_domain_ops = {
	.map = max77686_irq_domain_map,
	};

	int max77686_irq_init(struct max77686_dev *max77686)
	{
	struct irq_domain *domain;
	int i;
	int ret;
	int val;
	struct regmap *map;

	mutex_init(&max77686->irqlock);

	if (max77686->irq_gpio && !max77686->irq) {
	max77686->irq = gpio_to_irq(max77686->irq_gpio);

	if (debug_mask & MAX77686_DEBUG_IRQ_INT) {
	ret = gpio_request(max77686->irq_gpio, "pmic_irq");
	if (ret < 0) {
	dev_err(max77686->dev,
	"Failed to request gpio %d with ret:"
	"%d\n", max77686->irq_gpio, ret);
	return IRQ_NONE;
	}

	gpio_direction_input(max77686->irq_gpio);
	val = gpio_get_value(max77686->irq_gpio);
	gpio_free(max77686->irq_gpio);
	pr_info("%s: gpio_irq=%x\n", __func__, val);
	}
	}

	if (!max77686->irq) {
	dev_err(max77686->dev, "irq is not specified\n");
	return -ENODEV;
	}

	/* Mask individual interrupt sources */
	for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) {
	max77686->irq_masks_cur[i] = 0xff;
	max77686->irq_masks_cache[i] = 0xff;
	map = max77686_get_regmap(max77686, i);

	if (IS_ERR_OR_NULL(map))
	continue;
	if (max77686_mask_reg[i] == MAX77686_REG_INVALID)
	continue;

	regmap_write(map, max77686_mask_reg[i], 0xff);
	}
	domain = irq_domain_add_linear(NULL, MAX77686_IRQ_NR,
	&max77686_irq_domain_ops, max77686);
	if (!domain) {
	dev_err(max77686->dev, "could not create irq domain\n");
	return -ENODEV;
	}
	max77686->irq_domain = domain;

	ret = request_threaded_irq(max77686->irq, NULL, max77686_irq_thread,
	IRQF_TRIGGER_FALLING \| IRQF_ONESHOT,
	"max77686-irq", max77686);

	if (ret)
	dev_err(max77686->dev, "Failed to request IRQ %d: %d\n",
	max77686->irq, ret);


	if (debug_mask & MAX77686_DEBUG_IRQ_INFO)
	pr_info("%s-\n", __func__);

	return 0;
	}

	void max77686_irq_exit(struct max77686_dev *max77686)
	{
	if (max77686->irq)
	free_irq(max77686->irq, max77686);
	}