[linux-2.6-block.git] / drivers / mfd / arizona-irq.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Arizona interrupt support
 *
 * Copyright 2012 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 */

#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"

#define ARIZONA_AOD_IRQ_INDEX 0
#define ARIZONA_MAIN_IRQ_INDEX 1

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_resume_and_get(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) {
			/*
			 * Check the AOD status register to determine whether
			 * the nested IRQ handler should be called.
			 */
			ret = regmap_read(arizona->regmap,
					  ARIZONA_AOD_IRQ1, &val);
			if (ret)
				dev_warn(arizona->dev,
					"Failed to read AOD IRQ1 %d\n", ret);
			else if (val)
				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 struct lock_class_key arizona_irq_request_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,
		&arizona_irq_request_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;
	const struct regmap_irq_chip *aod, *irq;
	struct irq_data *irq_data;
	unsigned int virq;

	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) {
		virq = irq_create_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX);
		if (!virq) {
			dev_err(arizona->dev, "Failed to map AOD IRQs\n");
			ret = -EINVAL;
			goto err_domain;
		}

		ret = regmap_add_irq_chip(arizona->regmap, virq, 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_map_aod;
		}
	}

	virq = irq_create_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX);
	if (!virq) {
		dev_err(arizona->dev, "Failed to map main IRQs\n");
		ret = -EINVAL;
		goto err_aod;
	}

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

	/* 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 */
	ret = arizona_request_irq(arizona, ARIZONA_IRQ_BOOT_DONE, "Boot done",
				  arizona_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) {
		ret = arizona_request_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR,
					  "Control interface error",
					  arizona_ctrlif_err, 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:
	arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona);
err_boot_done:
	free_irq(arizona->irq, arizona);
err_main_irq:
	regmap_del_irq_chip(irq_find_mapping(arizona->virq,
					     ARIZONA_MAIN_IRQ_INDEX),
			    arizona->irq_chip);
err_map_main_irq:
	irq_dispose_mapping(irq_find_mapping(arizona->virq,
					     ARIZONA_MAIN_IRQ_INDEX));
err_aod:
	regmap_del_irq_chip(irq_find_mapping(arizona->virq,
					     ARIZONA_AOD_IRQ_INDEX),
			    arizona->aod_irq_chip);
err_map_aod:
	irq_dispose_mapping(irq_find_mapping(arizona->virq,
					     ARIZONA_AOD_IRQ_INDEX));
err_domain:
	irq_domain_remove(arizona->virq);
err:
	return ret;
}

int arizona_irq_exit(struct arizona *arizona)
{
	unsigned int virq;

	if (arizona->ctrlif_error)
		arizona_free_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, arizona);
	arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona);

	virq = irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX);
	regmap_del_irq_chip(virq, arizona->irq_chip);
	irq_dispose_mapping(virq);

	virq = irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX);
	regmap_del_irq_chip(virq, arizona->aod_irq_chip);
	irq_dispose_mapping(virq);

	irq_domain_remove(arizona->virq);

	free_irq(arizona->irq, arizona);

	return 0;
}
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
966cdc96 MB	2	/*
	3	* Arizona interrupt support
	4	*
	5	* Copyright 2012 Wolfson Microelectronics plc
	6	*
	7	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
966cdc96 MB	8	*/
	9
	10	#include <linux/delay.h>
	11	#include <linux/gpio.h>
	12	#include <linux/interrupt.h>
	13	#include <linux/irq.h>
	14	#include <linux/irqdomain.h>
	15	#include <linux/module.h>
	16	#include <linux/pm_runtime.h>
	17	#include <linux/regmap.h>
	18	#include <linux/regulator/consumer.h>
	19	#include <linux/slab.h>
	20
	21	#include <linux/mfd/arizona/core.h>
	22	#include <linux/mfd/arizona/registers.h>
	23
	24	#include "arizona.h"
	25
1a86dcb3 CK	26	#define ARIZONA_AOD_IRQ_INDEX 0
	27	#define ARIZONA_MAIN_IRQ_INDEX 1
	28
966cdc96 MB	29	static int arizona_map_irq(struct arizona *arizona, int irq)
	30	{
	31	int ret;
	32
ea1f3339 RF	33	if (arizona->aod_irq_chip) {
	34	ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq);
	35	if (ret >= 0)
	36	return ret;
	37	}
966cdc96	38
ea1f3339	39	return regmap_irq_get_virq(arizona->irq_chip, irq);
966cdc96 MB	40	}
	41
	42	int arizona_request_irq(struct arizona arizona, int irq, char name,
	43	irq_handler_t handler, void *data)
	44	{
	45	irq = arizona_map_irq(arizona, irq);
	46	if (irq < 0)
	47	return irq;
	48
	49	return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT,
	50	name, data);
	51	}
	52	EXPORT_SYMBOL_GPL(arizona_request_irq);
	53
	54	void arizona_free_irq(struct arizona arizona, int irq, void data)
	55	{
	56	irq = arizona_map_irq(arizona, irq);
	57	if (irq < 0)
	58	return;
	59
	60	free_irq(irq, data);
	61	}
	62	EXPORT_SYMBOL_GPL(arizona_free_irq);
	63
	64	int arizona_set_irq_wake(struct arizona *arizona, int irq, int on)
	65	{
	66	irq = arizona_map_irq(arizona, irq);
	67	if (irq < 0)
	68	return irq;
	69
	70	return irq_set_irq_wake(irq, on);
	71	}
	72	EXPORT_SYMBOL_GPL(arizona_set_irq_wake);
	73
	74	static irqreturn_t arizona_boot_done(int irq, void *data)
	75	{
	76	struct arizona *arizona = data;
	77
	78	dev_dbg(arizona->dev, "Boot done\n");
	79
	80	return IRQ_HANDLED;
	81	}
	82
	83	static irqreturn_t arizona_ctrlif_err(int irq, void *data)
	84	{
	85	struct arizona *arizona = data;
	86
	87	/*
	88	* For pretty much all potential sources a register cache sync
	89	* won't help, we've just got a software bug somewhere.
	90	*/
	91	dev_err(arizona->dev, "Control interface error\n");
	92
	93	return IRQ_HANDLED;
	94	}
	95
	96	static irqreturn_t arizona_irq_thread(int irq, void *data)
	97	{
	98	struct arizona *arizona = data;
3092f805	99	bool poll;
3080de4e	100	unsigned int val;
cdabc1c8	101	int ret;
966cdc96	102
fe6df2b4	103	ret = pm_runtime_resume_and_get(arizona->dev);
966cdc96 MB	104	if (ret < 0) {
	105	dev_err(arizona->dev, "Failed to resume device: %d\n", ret);
	106	return IRQ_NONE;
	107	}
	108
3092f805 MB	109	do {
	110	poll = false;
	111
1f2c3972 RF	112	if (arizona->aod_irq_chip) {
	113	/*
	114	* Check the AOD status register to determine whether
	115	* the nested IRQ handler should be called.
	116	*/
	117	ret = regmap_read(arizona->regmap,
	118	ARIZONA_AOD_IRQ1, &val);
	119	if (ret)
	120	dev_warn(arizona->dev,
	121	"Failed to read AOD IRQ1 %d\n", ret);
	122	else if (val)
	123	handle_nested_irq(
	124	irq_find_mapping(arizona->virq, 0));
	125	}
3092f805 MB	126
	127	/*
	128	* Check if one of the main interrupts is asserted and only
	129	* check that domain if it is.
	130	*/
	131	ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS,
	132	&val);
	133	if (ret == 0 && val & ARIZONA_IRQ1_STS) {
	134	handle_nested_irq(irq_find_mapping(arizona->virq, 1));
	135	} else if (ret != 0) {
	136	dev_err(arizona->dev,
	137	"Failed to read main IRQ status: %d\n", ret);
	138	}
3080de4e	139
3092f805 MB	140	/*
	141	* Poll the IRQ pin status to see if we're really done
	142	* if the interrupt controller can't do it for us.
	143	*/
	144	if (!arizona->pdata.irq_gpio) {
	145	break;
	146	} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING &&
	147	gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
	148	poll = true;
	149	} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING &&
	150	!gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
	151	poll = true;
	152	}
	153	} while (poll);
966cdc96 MB	154
	155	pm_runtime_mark_last_busy(arizona->dev);
	156	pm_runtime_put_autosuspend(arizona->dev);
	157
	158	return IRQ_HANDLED;
	159	}
	160
	161	static void arizona_irq_enable(struct irq_data *data)
	162	{
	163	}
	164
	165	static void arizona_irq_disable(struct irq_data *data)
	166	{
	167	}
	168
c38715fe CK	169	static int arizona_irq_set_wake(struct irq_data *data, unsigned int on)
	170	{
	171	struct arizona *arizona = irq_data_get_irq_chip_data(data);
	172
	173	return irq_set_irq_wake(arizona->irq, on);
	174	}
	175
966cdc96 MB	176	static struct irq_chip arizona_irq_chip = {
	177	.name = "arizona",
	178	.irq_disable = arizona_irq_disable,
	179	.irq_enable = arizona_irq_enable,
c38715fe	180	.irq_set_wake = arizona_irq_set_wake,
966cdc96 MB	181	};
966cdc96 MB	182
dedf24a2	183	static struct lock_class_key arizona_irq_lock_class;
39c3fd58	184	static struct lock_class_key arizona_irq_request_class;
dedf24a2	185
966cdc96 MB	186	static int arizona_irq_map(struct irq_domain *h, unsigned int virq,
	187	irq_hw_number_t hw)
	188	{
0a464dfd	189	struct arizona *data = h->host_data;
966cdc96 MB	190
966cdc96 MB	191	irq_set_chip_data(virq, data);
39c3fd58 AL	192	irq_set_lockdep_class(virq, &arizona_irq_lock_class,
39c3fd58 AL	193	&arizona_irq_request_class);
cfeb35da	194	irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq);
966cdc96	195	irq_set_nested_thread(virq, 1);
966cdc96	196	irq_set_noprobe(virq);
966cdc96 MB	197
	198	return 0;
	199	}
	200
7ce7b26f	201	static const struct irq_domain_ops arizona_domain_ops = {
966cdc96 MB	202	.map = arizona_irq_map,
	203	.xlate = irq_domain_xlate_twocell,
	204	};
	205
	206	int arizona_irq_init(struct arizona *arizona)
	207	{
	208	int flags = IRQF_ONESHOT;
003db34e	209	int ret;
966cdc96	210	const struct regmap_irq_chip aod, irq;
22c75fe7	211	struct irq_data *irq_data;
3dfaff27	212	unsigned int virq;
966cdc96	213
30a2af3a CK	214	arizona->ctrlif_error = true;
30a2af3a CK	215
966cdc96	216	switch (arizona->type) {
863df8d5	217	#ifdef CONFIG_MFD_WM5102
966cdc96 MB	218	case WM5102:
	219	aod = &wm5102_aod;
	220	irq = &wm5102_irq;
92d80139	221
30a2af3a	222	arizona->ctrlif_error = false;
966cdc96	223	break;
e102befe MB	224	#endif
	225	#ifdef CONFIG_MFD_WM5110
	226	case WM5110:
e5d4ef0d	227	case WM8280:
e102befe	228	aod = &wm5110_aod;
3215501f CK	229
	230	switch (arizona->rev) {
	231	case 0 ... 2:
	232	irq = &wm5110_irq;
	233	break;
	234	default:
	235	irq = &wm5110_revd_irq;
	236	break;
	237	}
92d80139	238
30a2af3a	239	arizona->ctrlif_error = false;
e102befe	240	break;
863df8d5	241	#endif
ea1f3339 RF	242	#ifdef CONFIG_MFD_CS47L24
	243	case WM1831:
	244	case CS47L24:
	245	aod = NULL;
	246	irq = &cs47l24_irq;
	247
	248	arizona->ctrlif_error = false;
	249	break;
	250	#endif
dc7d4863 CK	251	#ifdef CONFIG_MFD_WM8997
	252	case WM8997:
	253	aod = &wm8997_aod;
	254	irq = &wm8997_irq;
	255
30a2af3a	256	arizona->ctrlif_error = false;
dc7d4863 CK	257	break;
dc7d4863 CK	258	#endif
6887b042 RF	259	#ifdef CONFIG_MFD_WM8998
	260	case WM8998:
	261	case WM1814:
	262	aod = &wm8998_aod;
	263	irq = &wm8998_irq;
	264
	265	arizona->ctrlif_error = false;
	266	break;
	267	#endif
966cdc96 MB	268	default:
	269	BUG_ON("Unknown Arizona class device" == NULL);
	270	return -EINVAL;
	271	}
	272
1816cb34 MB	273	/* Disable all wake sources by default */
	274	regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0);
	275
22c75fe7 MB	276	/* Read the flags from the interrupt controller if not specified */
	277	if (!arizona->pdata.irq_flags) {
	278	irq_data = irq_get_irq_data(arizona->irq);
	279	if (!irq_data) {
	280	dev_err(arizona->dev, "Invalid IRQ: %d\n",
	281	arizona->irq);
	282	return -EINVAL;
	283	}
	284
	285	arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data);
	286	switch (arizona->pdata.irq_flags) {
	287	case IRQF_TRIGGER_LOW:
	288	case IRQF_TRIGGER_HIGH:
	289	case IRQF_TRIGGER_RISING:
	290	case IRQF_TRIGGER_FALLING:
	291	break;
	292
	293	case IRQ_TYPE_NONE:
	294	default:
	295	/* Device default */
	296	arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
	297	break;
	298	}
	299	}
f8a0941f MB	300
	301	if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH \|
	302	IRQF_TRIGGER_RISING)) {
966cdc96 MB	303	ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1,
	304	ARIZONA_IRQ_POL, 0);
	305	if (ret != 0) {
	306	dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n",
	307	ret);
	308	goto err;
	309	}
966cdc96 MB	310	}
966cdc96 MB	311
f8a0941f MB	312	flags \|= arizona->pdata.irq_flags;
f8a0941f MB	313
966cdc96 MB	314	/* Allocate a virtual IRQ domain to distribute to the regmap domains */
	315	arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops,
	316	arizona);
	317	if (!arizona->virq) {
b7dea5dc	318	dev_err(arizona->dev, "Failed to add core IRQ domain\n");
966cdc96 MB	319	ret = -EINVAL;
	320	goto err;
	321	}
	322
ea1f3339	323	if (aod) {
3dfaff27 CK	324	virq = irq_create_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX);
	325	if (!virq) {
	326	dev_err(arizona->dev, "Failed to map AOD IRQs\n");
	327	ret = -EINVAL;
	328	goto err_domain;
	329	}
	330
	331	ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT,
	332	0, aod, &arizona->aod_irq_chip);
ea1f3339 RF	333	if (ret != 0) {
	334	dev_err(arizona->dev,
	335	"Failed to add AOD IRQs: %d\n", ret);
3dfaff27	336	goto err_map_aod;
ea1f3339	337	}
966cdc96 MB	338	}
966cdc96 MB	339
3dfaff27 CK	340	virq = irq_create_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX);
	341	if (!virq) {
	342	dev_err(arizona->dev, "Failed to map main IRQs\n");
	343	ret = -EINVAL;
	344	goto err_aod;
	345	}
	346
	347	ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT,
	348	0, irq, &arizona->irq_chip);
966cdc96	349	if (ret != 0) {
d1cb4cc9	350	dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret);
3dfaff27	351	goto err_map_main_irq;
966cdc96 MB	352	}
966cdc96 MB	353
3092f805 MB	354	/* Used to emulate edge trigger and to work around broken pinmux */
	355	if (arizona->pdata.irq_gpio) {
	356	if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) {
	357	dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n",
	358	arizona->irq, arizona->pdata.irq_gpio,
	359	gpio_to_irq(arizona->pdata.irq_gpio));
	360	arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio);
	361	}
	362
	363	ret = devm_gpio_request_one(arizona->dev,
	364	arizona->pdata.irq_gpio,
	365	GPIOF_IN, "arizona IRQ");
	366	if (ret != 0) {
	367	dev_err(arizona->dev,
	368	"Failed to request IRQ GPIO %d:: %d\n",
	369	arizona->pdata.irq_gpio, ret);
	370	arizona->pdata.irq_gpio = 0;
	371	}
	372	}
	373
966cdc96 MB	374	ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread,
	375	flags, "arizona", arizona);
	376
	377	if (ret != 0) {
7994c664	378	dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n",
966cdc96 MB	379	arizona->irq, ret);
	380	goto err_main_irq;
	381	}
	382
6c006b1b	383	/* Make sure the boot done IRQ is unmasked for resumes */
003db34e CK	384	ret = arizona_request_irq(arizona, ARIZONA_IRQ_BOOT_DONE, "Boot done",
003db34e CK	385	arizona_boot_done, arizona);
6c006b1b CK	386	if (ret != 0) {
	387	dev_err(arizona->dev, "Failed to request boot done %d: %d\n",
	388	arizona->irq, ret);
	389	goto err_boot_done;
	390	}
	391
	392	/* Handle control interface errors in the core */
	393	if (arizona->ctrlif_error) {
003db34e CK	394	ret = arizona_request_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR,
	395	"Control interface error",
	396	arizona_ctrlif_err, arizona);
6c006b1b CK	397	if (ret != 0) {
	398	dev_err(arizona->dev,
	399	"Failed to request CTRLIF_ERR %d: %d\n",
	400	arizona->irq, ret);
	401	goto err_ctrlif;
	402	}
	403	}
	404
966cdc96 MB	405	return 0;
966cdc96 MB	406
966cdc96	407	err_ctrlif:
003db34e	408	arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona);
966cdc96	409	err_boot_done:
6c006b1b CK	410	free_irq(arizona->irq, arizona);
6c006b1b CK	411	err_main_irq:
1a86dcb3 CK	412	regmap_del_irq_chip(irq_find_mapping(arizona->virq,
1a86dcb3 CK	413	ARIZONA_MAIN_IRQ_INDEX),
966cdc96	414	arizona->irq_chip);
3dfaff27 CK	415	err_map_main_irq:
	416	irq_dispose_mapping(irq_find_mapping(arizona->virq,
	417	ARIZONA_MAIN_IRQ_INDEX));
966cdc96	418	err_aod:
1a86dcb3 CK	419	regmap_del_irq_chip(irq_find_mapping(arizona->virq,
1a86dcb3 CK	420	ARIZONA_AOD_IRQ_INDEX),
966cdc96	421	arizona->aod_irq_chip);
3dfaff27 CK	422	err_map_aod:
	423	irq_dispose_mapping(irq_find_mapping(arizona->virq,
	424	ARIZONA_AOD_IRQ_INDEX));
	425	err_domain:
	426	irq_domain_remove(arizona->virq);
966cdc96 MB	427	err:
	428	return ret;
	429	}
	430
	431	int arizona_irq_exit(struct arizona *arizona)
	432	{
3dfaff27 CK	433	unsigned int virq;
3dfaff27 CK	434
30a2af3a	435	if (arizona->ctrlif_error)
003db34e CK	436	arizona_free_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, arizona);
	437	arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona);
	438
3dfaff27 CK	439	virq = irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX);
	440	regmap_del_irq_chip(virq, arizona->irq_chip);
	441	irq_dispose_mapping(virq);
	442
	443	virq = irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX);
	444	regmap_del_irq_chip(virq, arizona->aod_irq_chip);
	445	irq_dispose_mapping(virq);
	446
	447	irq_domain_remove(arizona->virq);
	448
966cdc96 MB	449	free_irq(arizona->irq, arizona);
	450
	451	return 0;
	452	}