drivers/mfd/arizona-irq.c - kernel/quantenna - Git at Google

 /*
  * Arizona interrupt support
  *
  * Copyright 2012 Wolfson Microelectronics plc
  *
  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */

 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/irqdomain.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>

 #include <linux/mfd/arizona/core.h>
 #include <linux/mfd/arizona/registers.h>

 #include "arizona.h"

 static int arizona_map_irq(struct arizona *arizona, int irq)
 {
 	int ret;

 	if (arizona->aod_irq_chip) {
 		ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq);
 		if (ret >= 0)
 			return ret;
 	}

 	return regmap_irq_get_virq(arizona->irq_chip, irq);
 }

 int arizona_request_irq(struct arizona *arizona, int irq, char *name,
 			   irq_handler_t handler, void *data)
 {
 	irq = arizona_map_irq(arizona, irq);
 	if (irq < 0)
 		return irq;

 	return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT,
 				    name, data);
 }
 EXPORT_SYMBOL_GPL(arizona_request_irq);

 void arizona_free_irq(struct arizona *arizona, int irq, void *data)
 {
 	irq = arizona_map_irq(arizona, irq);
 	if (irq < 0)
 		return;

 	free_irq(irq, data);
 }
 EXPORT_SYMBOL_GPL(arizona_free_irq);

 int arizona_set_irq_wake(struct arizona *arizona, int irq, int on)
 {
 	irq = arizona_map_irq(arizona, irq);
 	if (irq < 0)
 		return irq;

 	return irq_set_irq_wake(irq, on);
 }
 EXPORT_SYMBOL_GPL(arizona_set_irq_wake);

 static irqreturn_t arizona_boot_done(int irq, void *data)
 {
 	struct arizona *arizona = data;

 	dev_dbg(arizona->dev, "Boot done\n");

 	return IRQ_HANDLED;
 }

 static irqreturn_t arizona_ctrlif_err(int irq, void *data)
 {
 	struct arizona *arizona = data;

 	/*
 	 * For pretty much all potential sources a register cache sync
 	 * won't help, we've just got a software bug somewhere.
 	 */
 	dev_err(arizona->dev, "Control interface error\n");

 	return IRQ_HANDLED;
 }

 static irqreturn_t arizona_irq_thread(int irq, void *data)
 {
 	struct arizona *arizona = data;
 	bool poll;
 	unsigned int val;
 	int ret;

 	ret = pm_runtime_get_sync(arizona->dev);
 	if (ret < 0) {
 		dev_err(arizona->dev, "Failed to resume device: %d\n", ret);
 		return IRQ_NONE;
 	}

 	do {
 		poll = false;

 		if (arizona->aod_irq_chip)
 			handle_nested_irq(irq_find_mapping(arizona->virq, 0));

 		/*
 		 * Check if one of the main interrupts is asserted and only
 		 * check that domain if it is.
 		 */
 		ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS,
 				  &val);
 		if (ret == 0 && val & ARIZONA_IRQ1_STS) {
 			handle_nested_irq(irq_find_mapping(arizona->virq, 1));
 		} else if (ret != 0) {
 			dev_err(arizona->dev,
 				"Failed to read main IRQ status: %d\n", ret);
 		}

 		/*
 		 * Poll the IRQ pin status to see if we're really done
 		 * if the interrupt controller can't do it for us.
 		 */
 		if (!arizona->pdata.irq_gpio) {
 			break;
 		} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING &&
 			   gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
 			poll = true;
 		} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING &&
 			   !gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
 			poll = true;
 		}
 	} while (poll);

 	pm_runtime_mark_last_busy(arizona->dev);
 	pm_runtime_put_autosuspend(arizona->dev);

 	return IRQ_HANDLED;
 }

 static void arizona_irq_enable(struct irq_data *data)
 {
 }

 static void arizona_irq_disable(struct irq_data *data)
 {
 }

 static int arizona_irq_set_wake(struct irq_data *data, unsigned int on)
 {
 	struct arizona *arizona = irq_data_get_irq_chip_data(data);

 	return irq_set_irq_wake(arizona->irq, on);
 }

 static struct irq_chip arizona_irq_chip = {
 	.name			= "arizona",
 	.irq_disable		= arizona_irq_disable,
 	.irq_enable		= arizona_irq_enable,
 	.irq_set_wake		= arizona_irq_set_wake,
 };

 static struct lock_class_key arizona_irq_lock_class;

 static int arizona_irq_map(struct irq_domain *h, unsigned int virq,
 			      irq_hw_number_t hw)
 {
 	struct arizona *data = h->host_data;

 	irq_set_chip_data(virq, data);
 	irq_set_lockdep_class(virq, &arizona_irq_lock_class);
 	irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq);
 	irq_set_nested_thread(virq, 1);
 	irq_set_noprobe(virq);

 	return 0;
 }

 static const struct irq_domain_ops arizona_domain_ops = {
 	.map	= arizona_irq_map,
 	.xlate	= irq_domain_xlate_twocell,
 };

 int arizona_irq_init(struct arizona *arizona)
 {
 	int flags = IRQF_ONESHOT;
 	int ret, i;
 	const struct regmap_irq_chip *aod, *irq;
 	struct irq_data *irq_data;

 	arizona->ctrlif_error = true;

 	switch (arizona->type) {
 #ifdef CONFIG_MFD_WM5102
 	case WM5102:
 		aod = &wm5102_aod;
 		irq = &wm5102_irq;

 		arizona->ctrlif_error = false;
 		break;
 #endif
 #ifdef CONFIG_MFD_WM5110
 	case WM5110:
 	case WM8280:
 		aod = &wm5110_aod;

 		switch (arizona->rev) {
 		case 0 ... 2:
 			irq = &wm5110_irq;
 			break;
 		default:
 			irq = &wm5110_revd_irq;
 			break;
 		}

 		arizona->ctrlif_error = false;
 		break;
 #endif
 #ifdef CONFIG_MFD_CS47L24
 	case WM1831:
 	case CS47L24:
 		aod = NULL;
 		irq = &cs47l24_irq;

 		arizona->ctrlif_error = false;
 		break;
 #endif
 #ifdef CONFIG_MFD_WM8997
 	case WM8997:
 		aod = &wm8997_aod;
 		irq = &wm8997_irq;

 		arizona->ctrlif_error = false;
 		break;
 #endif
 #ifdef CONFIG_MFD_WM8998
 	case WM8998:
 	case WM1814:
 		aod = &wm8998_aod;
 		irq = &wm8998_irq;

 		arizona->ctrlif_error = false;
 		break;
 #endif
 	default:
 		BUG_ON("Unknown Arizona class device" == NULL);
 		return -EINVAL;
 	}

 	/* Disable all wake sources by default */
 	regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0);

 	/* Read the flags from the interrupt controller if not specified */
 	if (!arizona->pdata.irq_flags) {
 		irq_data = irq_get_irq_data(arizona->irq);
 		if (!irq_data) {
 			dev_err(arizona->dev, "Invalid IRQ: %d\n",
 				arizona->irq);
 			return -EINVAL;
 		}

 		arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data);
 		switch (arizona->pdata.irq_flags) {
 		case IRQF_TRIGGER_LOW:
 		case IRQF_TRIGGER_HIGH:
 		case IRQF_TRIGGER_RISING:
 		case IRQF_TRIGGER_FALLING:
 			break;

 		case IRQ_TYPE_NONE:
 		default:
 			/* Device default */
 			arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
 			break;
 		}
 	}

 	if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH |
 					IRQF_TRIGGER_RISING)) {
 		ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1,
 					 ARIZONA_IRQ_POL, 0);
 		if (ret != 0) {
 			dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n",
 				ret);
 			goto err;
 		}
 	}

 	flags |= arizona->pdata.irq_flags;

 	/* Allocate a virtual IRQ domain to distribute to the regmap domains */
 	arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops,
 					      arizona);
 	if (!arizona->virq) {
 		dev_err(arizona->dev, "Failed to add core IRQ domain\n");
 		ret = -EINVAL;
 		goto err;
 	}

 	if (aod) {
 		ret = regmap_add_irq_chip(arizona->regmap,
 					  irq_create_mapping(arizona->virq, 0),
 					  IRQF_ONESHOT, 0, aod,
 					  &arizona->aod_irq_chip);
 		if (ret != 0) {
 			dev_err(arizona->dev,
 				"Failed to add AOD IRQs: %d\n", ret);
 			goto err;
 		}
 	}

 	ret = regmap_add_irq_chip(arizona->regmap,
 				  irq_create_mapping(arizona->virq, 1),
 				  IRQF_ONESHOT, 0, irq,
 				  &arizona->irq_chip);
 	if (ret != 0) {
 		dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret);
 		goto err_aod;
 	}

 	/* Used to emulate edge trigger and to work around broken pinmux */
 	if (arizona->pdata.irq_gpio) {
 		if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) {
 			dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n",
 				 arizona->irq, arizona->pdata.irq_gpio,
 				 gpio_to_irq(arizona->pdata.irq_gpio));
 			arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio);
 		}

 		ret = devm_gpio_request_one(arizona->dev,
 					    arizona->pdata.irq_gpio,
 					    GPIOF_IN, "arizona IRQ");
 		if (ret != 0) {
 			dev_err(arizona->dev,
 				"Failed to request IRQ GPIO %d:: %d\n",
 				arizona->pdata.irq_gpio, ret);
 			arizona->pdata.irq_gpio = 0;
 		}
 	}

 	ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread,
 				   flags, "arizona", arizona);

 	if (ret != 0) {
 		dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n",
 			arizona->irq, ret);
 		goto err_main_irq;
 	}

 	/* Make sure the boot done IRQ is unmasked for resumes */
 	i = arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE);
 	ret = request_threaded_irq(i, NULL, arizona_boot_done, IRQF_ONESHOT,
 				   "Boot done", arizona);
 	if (ret != 0) {
 		dev_err(arizona->dev, "Failed to request boot done %d: %d\n",
 			arizona->irq, ret);
 		goto err_boot_done;
 	}

 	/* Handle control interface errors in the core */
 	if (arizona->ctrlif_error) {
 		i = arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR);
 		ret = request_threaded_irq(i, NULL, arizona_ctrlif_err,
 					   IRQF_ONESHOT,
 					   "Control interface error", arizona);
 		if (ret != 0) {
 			dev_err(arizona->dev,
 				"Failed to request CTRLIF_ERR %d: %d\n",
 				arizona->irq, ret);
 			goto err_ctrlif;
 		}
 	}

 	return 0;

 err_ctrlif:
 	free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE), arizona);
 err_boot_done:
 	free_irq(arizona->irq, arizona);
 err_main_irq:
 	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 1),
 			    arizona->irq_chip);
 err_aod:
 	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 0),
 			    arizona->aod_irq_chip);
 err:
 	return ret;
 }

 int arizona_irq_exit(struct arizona *arizona)
 {
 	if (arizona->ctrlif_error)
 		free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR),
 			 arizona);
 	free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE), arizona);
 	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 1),
 			    arizona->irq_chip);
 	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 0),
 			    arizona->aod_irq_chip);
 	free_irq(arizona->irq, arizona);

 	return 0;
 }
	/*
	* Arizona interrupt support
	*
	* Copyright 2012 Wolfson Microelectronics plc
	*
	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*/

	#include <linux/delay.h>
	#include <linux/gpio.h>
	#include <linux/interrupt.h>
	#include <linux/irq.h>
	#include <linux/irqdomain.h>
	#include <linux/module.h>
	#include <linux/pm_runtime.h>
	#include <linux/regmap.h>
	#include <linux/regulator/consumer.h>
	#include <linux/slab.h>

	#include <linux/mfd/arizona/core.h>
	#include <linux/mfd/arizona/registers.h>

	#include "arizona.h"

	static int arizona_map_irq(struct arizona *arizona, int irq)
	{
	int ret;

	if (arizona->aod_irq_chip) {
	ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq);
	if (ret >= 0)
	return ret;
	}

	return regmap_irq_get_virq(arizona->irq_chip, irq);
	}

	int arizona_request_irq(struct arizona arizona, int irq, char name,
	irq_handler_t handler, void *data)
	{
	irq = arizona_map_irq(arizona, irq);
	if (irq < 0)
	return irq;

	return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT,
	name, data);
	}
	EXPORT_SYMBOL_GPL(arizona_request_irq);

	void arizona_free_irq(struct arizona arizona, int irq, void data)
	{
	irq = arizona_map_irq(arizona, irq);
	if (irq < 0)
	return;

	free_irq(irq, data);
	}
	EXPORT_SYMBOL_GPL(arizona_free_irq);

	int arizona_set_irq_wake(struct arizona *arizona, int irq, int on)
	{
	irq = arizona_map_irq(arizona, irq);
	if (irq < 0)
	return irq;

	return irq_set_irq_wake(irq, on);
	}
	EXPORT_SYMBOL_GPL(arizona_set_irq_wake);

	static irqreturn_t arizona_boot_done(int irq, void *data)
	{
	struct arizona *arizona = data;

	dev_dbg(arizona->dev, "Boot done\n");

	return IRQ_HANDLED;
	}

	static irqreturn_t arizona_ctrlif_err(int irq, void *data)
	{
	struct arizona *arizona = data;

	/*
	* For pretty much all potential sources a register cache sync
	* won't help, we've just got a software bug somewhere.
	*/
	dev_err(arizona->dev, "Control interface error\n");

	return IRQ_HANDLED;
	}

	static irqreturn_t arizona_irq_thread(int irq, void *data)
	{
	struct arizona *arizona = data;
	bool poll;
	unsigned int val;
	int ret;

	ret = pm_runtime_get_sync(arizona->dev);
	if (ret < 0) {
	dev_err(arizona->dev, "Failed to resume device: %d\n", ret);
	return IRQ_NONE;
	}

	do {
	poll = false;

	if (arizona->aod_irq_chip)
	handle_nested_irq(irq_find_mapping(arizona->virq, 0));

	/*
	* Check if one of the main interrupts is asserted and only
	* check that domain if it is.
	*/
	ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS,
	&val);
	if (ret == 0 && val & ARIZONA_IRQ1_STS) {
	handle_nested_irq(irq_find_mapping(arizona->virq, 1));
	} else if (ret != 0) {
	dev_err(arizona->dev,
	"Failed to read main IRQ status: %d\n", ret);
	}

	/*
	* Poll the IRQ pin status to see if we're really done
	* if the interrupt controller can't do it for us.
	*/
	if (!arizona->pdata.irq_gpio) {
	break;
	} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING &&
	gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
	poll = true;
	} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING &&
	!gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
	poll = true;
	}
	} while (poll);

	pm_runtime_mark_last_busy(arizona->dev);
	pm_runtime_put_autosuspend(arizona->dev);

	return IRQ_HANDLED;
	}

	static void arizona_irq_enable(struct irq_data *data)
	{
	}

	static void arizona_irq_disable(struct irq_data *data)
	{
	}

	static int arizona_irq_set_wake(struct irq_data *data, unsigned int on)
	{
	struct arizona *arizona = irq_data_get_irq_chip_data(data);

	return irq_set_irq_wake(arizona->irq, on);
	}

	static struct irq_chip arizona_irq_chip = {
	.name = "arizona",
	.irq_disable = arizona_irq_disable,
	.irq_enable = arizona_irq_enable,
	.irq_set_wake = arizona_irq_set_wake,
	};

	static struct lock_class_key arizona_irq_lock_class;

	static int arizona_irq_map(struct irq_domain *h, unsigned int virq,
	irq_hw_number_t hw)
	{
	struct arizona *data = h->host_data;

	irq_set_chip_data(virq, data);
	irq_set_lockdep_class(virq, &arizona_irq_lock_class);
	irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq);
	irq_set_nested_thread(virq, 1);
	irq_set_noprobe(virq);

	return 0;
	}

	static const struct irq_domain_ops arizona_domain_ops = {
	.map = arizona_irq_map,
	.xlate = irq_domain_xlate_twocell,
	};

	int arizona_irq_init(struct arizona *arizona)
	{
	int flags = IRQF_ONESHOT;
	int ret, i;
	const struct regmap_irq_chip aod, irq;
	struct irq_data *irq_data;

	arizona->ctrlif_error = true;

	switch (arizona->type) {
	#ifdef CONFIG_MFD_WM5102
	case WM5102:
	aod = &wm5102_aod;
	irq = &wm5102_irq;

	arizona->ctrlif_error = false;
	break;
	#endif
	#ifdef CONFIG_MFD_WM5110
	case WM5110:
	case WM8280:
	aod = &wm5110_aod;

	switch (arizona->rev) {
	case 0 ... 2:
	irq = &wm5110_irq;
	break;
	default:
	irq = &wm5110_revd_irq;
	break;
	}

	arizona->ctrlif_error = false;
	break;
	#endif
	#ifdef CONFIG_MFD_CS47L24
	case WM1831:
	case CS47L24:
	aod = NULL;
	irq = &cs47l24_irq;

	arizona->ctrlif_error = false;
	break;
	#endif
	#ifdef CONFIG_MFD_WM8997
	case WM8997:
	aod = &wm8997_aod;
	irq = &wm8997_irq;

	arizona->ctrlif_error = false;
	break;
	#endif
	#ifdef CONFIG_MFD_WM8998
	case WM8998:
	case WM1814:
	aod = &wm8998_aod;
	irq = &wm8998_irq;

	arizona->ctrlif_error = false;
	break;
	#endif
	default:
	BUG_ON("Unknown Arizona class device" == NULL);
	return -EINVAL;
	}

	/* Disable all wake sources by default */
	regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0);

	/* Read the flags from the interrupt controller if not specified */
	if (!arizona->pdata.irq_flags) {
	irq_data = irq_get_irq_data(arizona->irq);
	if (!irq_data) {
	dev_err(arizona->dev, "Invalid IRQ: %d\n",
	arizona->irq);
	return -EINVAL;
	}

	arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data);
	switch (arizona->pdata.irq_flags) {
	case IRQF_TRIGGER_LOW:
	case IRQF_TRIGGER_HIGH:
	case IRQF_TRIGGER_RISING:
	case IRQF_TRIGGER_FALLING:
	break;

	case IRQ_TYPE_NONE:
	default:
	/* Device default */
	arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
	break;
	}
	}

	if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH \|
	IRQF_TRIGGER_RISING)) {
	ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1,
	ARIZONA_IRQ_POL, 0);
	if (ret != 0) {
	dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n",
	ret);
	goto err;
	}
	}

	flags \|= arizona->pdata.irq_flags;

	/* Allocate a virtual IRQ domain to distribute to the regmap domains */
	arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops,
	arizona);
	if (!arizona->virq) {
	dev_err(arizona->dev, "Failed to add core IRQ domain\n");
	ret = -EINVAL;
	goto err;
	}

	if (aod) {
	ret = regmap_add_irq_chip(arizona->regmap,
	irq_create_mapping(arizona->virq, 0),
	IRQF_ONESHOT, 0, aod,
	&arizona->aod_irq_chip);
	if (ret != 0) {
	dev_err(arizona->dev,
	"Failed to add AOD IRQs: %d\n", ret);
	goto err;
	}
	}

	ret = regmap_add_irq_chip(arizona->regmap,
	irq_create_mapping(arizona->virq, 1),
	IRQF_ONESHOT, 0, irq,
	&arizona->irq_chip);
	if (ret != 0) {
	dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret);
	goto err_aod;
	}

	/* Used to emulate edge trigger and to work around broken pinmux */
	if (arizona->pdata.irq_gpio) {
	if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) {
	dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n",
	arizona->irq, arizona->pdata.irq_gpio,
	gpio_to_irq(arizona->pdata.irq_gpio));
	arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio);
	}

	ret = devm_gpio_request_one(arizona->dev,
	arizona->pdata.irq_gpio,
	GPIOF_IN, "arizona IRQ");
	if (ret != 0) {
	dev_err(arizona->dev,
	"Failed to request IRQ GPIO %d:: %d\n",
	arizona->pdata.irq_gpio, ret);
	arizona->pdata.irq_gpio = 0;
	}
	}

	ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread,
	flags, "arizona", arizona);

	if (ret != 0) {
	dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n",
	arizona->irq, ret);
	goto err_main_irq;
	}

	/* Make sure the boot done IRQ is unmasked for resumes */
	i = arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE);
	ret = request_threaded_irq(i, NULL, arizona_boot_done, IRQF_ONESHOT,
	"Boot done", arizona);
	if (ret != 0) {
	dev_err(arizona->dev, "Failed to request boot done %d: %d\n",
	arizona->irq, ret);
	goto err_boot_done;
	}

	/* Handle control interface errors in the core */
	if (arizona->ctrlif_error) {
	i = arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR);
	ret = request_threaded_irq(i, NULL, arizona_ctrlif_err,
	IRQF_ONESHOT,
	"Control interface error", arizona);
	if (ret != 0) {
	dev_err(arizona->dev,
	"Failed to request CTRLIF_ERR %d: %d\n",
	arizona->irq, ret);
	goto err_ctrlif;
	}
	}

	return 0;

	err_ctrlif:
	free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE), arizona);
	err_boot_done:
	free_irq(arizona->irq, arizona);
	err_main_irq:
	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 1),
	arizona->irq_chip);
	err_aod:
	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 0),
	arizona->aod_irq_chip);
	err:
	return ret;
	}

	int arizona_irq_exit(struct arizona *arizona)
	{
	if (arizona->ctrlif_error)
	free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR),
	arizona);
	free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE), arizona);
	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 1),
	arizona->irq_chip);
	regmap_del_irq_chip(irq_create_mapping(arizona->virq, 0),
	arizona->aod_irq_chip);
	free_irq(arizona->irq, arizona);

	return 0;
	}