[mirror_ubuntu-bionic-kernel.git] / drivers / mfd / arizona-irq.c

/*
 * 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"

#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_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) {
			/*
			 * 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
966cdc96 MB	1	/*
	2	* Arizona interrupt support
	3	*
	4	* Copyright 2012 Wolfson Microelectronics plc
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/delay.h>
	14	#include <linux/gpio.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/irq.h>
	17	#include <linux/irqdomain.h>
	18	#include <linux/module.h>
	19	#include <linux/pm_runtime.h>
	20	#include <linux/regmap.h>
	21	#include <linux/regulator/consumer.h>
	22	#include <linux/slab.h>
	23
	24	#include <linux/mfd/arizona/core.h>
	25	#include <linux/mfd/arizona/registers.h>
	26
	27	#include "arizona.h"
	28
1a86dcb3 CK	29	#define ARIZONA_AOD_IRQ_INDEX 0
	30	#define ARIZONA_MAIN_IRQ_INDEX 1
	31
966cdc96 MB	32	static int arizona_map_irq(struct arizona *arizona, int irq)
	33	{
	34	int ret;
	35
ea1f3339 RF	36	if (arizona->aod_irq_chip) {
	37	ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq);
	38	if (ret >= 0)
	39	return ret;
	40	}
966cdc96	41
ea1f3339	42	return regmap_irq_get_virq(arizona->irq_chip, irq);
966cdc96 MB	43	}
	44
	45	int arizona_request_irq(struct arizona arizona, int irq, char name,
	46	irq_handler_t handler, void *data)
	47	{
	48	irq = arizona_map_irq(arizona, irq);
	49	if (irq < 0)
	50	return irq;
	51
	52	return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT,
	53	name, data);
	54	}
	55	EXPORT_SYMBOL_GPL(arizona_request_irq);
	56
	57	void arizona_free_irq(struct arizona arizona, int irq, void data)
	58	{
	59	irq = arizona_map_irq(arizona, irq);
	60	if (irq < 0)
	61	return;
	62
	63	free_irq(irq, data);
	64	}
	65	EXPORT_SYMBOL_GPL(arizona_free_irq);
	66
	67	int arizona_set_irq_wake(struct arizona *arizona, int irq, int on)
	68	{
	69	irq = arizona_map_irq(arizona, irq);
	70	if (irq < 0)
	71	return irq;
	72
	73	return irq_set_irq_wake(irq, on);
	74	}
	75	EXPORT_SYMBOL_GPL(arizona_set_irq_wake);
	76
	77	static irqreturn_t arizona_boot_done(int irq, void *data)
	78	{
	79	struct arizona *arizona = data;
	80
	81	dev_dbg(arizona->dev, "Boot done\n");
	82
	83	return IRQ_HANDLED;
	84	}
	85
	86	static irqreturn_t arizona_ctrlif_err(int irq, void *data)
	87	{
	88	struct arizona *arizona = data;
	89
	90	/*
	91	* For pretty much all potential sources a register cache sync
	92	* won't help, we've just got a software bug somewhere.
	93	*/
	94	dev_err(arizona->dev, "Control interface error\n");
	95
	96	return IRQ_HANDLED;
	97	}
	98
	99	static irqreturn_t arizona_irq_thread(int irq, void *data)
	100	{
	101	struct arizona *arizona = data;
3092f805	102	bool poll;
3080de4e	103	unsigned int val;
cdabc1c8	104	int ret;
966cdc96 MB	105
	106	ret = pm_runtime_get_sync(arizona->dev);
	107	if (ret < 0) {
	108	dev_err(arizona->dev, "Failed to resume device: %d\n", ret);
	109	return IRQ_NONE;
	110	}
	111
3092f805 MB	112	do {
	113	poll = false;
	114
1f2c3972 RF	115	if (arizona->aod_irq_chip) {
	116	/*
	117	* Check the AOD status register to determine whether
	118	* the nested IRQ handler should be called.
	119	*/
	120	ret = regmap_read(arizona->regmap,
	121	ARIZONA_AOD_IRQ1, &val);
	122	if (ret)
	123	dev_warn(arizona->dev,
	124	"Failed to read AOD IRQ1 %d\n", ret);
	125	else if (val)
	126	handle_nested_irq(
	127	irq_find_mapping(arizona->virq, 0));
	128	}
3092f805 MB	129
	130	/*
	131	* Check if one of the main interrupts is asserted and only
	132	* check that domain if it is.
	133	*/
	134	ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS,
	135	&val);
	136	if (ret == 0 && val & ARIZONA_IRQ1_STS) {
	137	handle_nested_irq(irq_find_mapping(arizona->virq, 1));
	138	} else if (ret != 0) {
	139	dev_err(arizona->dev,
	140	"Failed to read main IRQ status: %d\n", ret);
	141	}
3080de4e	142
3092f805 MB	143	/*
	144	* Poll the IRQ pin status to see if we're really done
	145	* if the interrupt controller can't do it for us.
	146	*/
	147	if (!arizona->pdata.irq_gpio) {
	148	break;
	149	} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING &&
	150	gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
	151	poll = true;
	152	} else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING &&
	153	!gpio_get_value_cansleep(arizona->pdata.irq_gpio)) {
	154	poll = true;
	155	}
	156	} while (poll);
966cdc96 MB	157
	158	pm_runtime_mark_last_busy(arizona->dev);
	159	pm_runtime_put_autosuspend(arizona->dev);
	160
	161	return IRQ_HANDLED;
	162	}
	163
	164	static void arizona_irq_enable(struct irq_data *data)
	165	{
	166	}
	167
	168	static void arizona_irq_disable(struct irq_data *data)
	169	{
	170	}
	171
c38715fe CK	172	static int arizona_irq_set_wake(struct irq_data *data, unsigned int on)
	173	{
	174	struct arizona *arizona = irq_data_get_irq_chip_data(data);
	175
	176	return irq_set_irq_wake(arizona->irq, on);
	177	}
	178
966cdc96 MB	179	static struct irq_chip arizona_irq_chip = {
	180	.name = "arizona",
	181	.irq_disable = arizona_irq_disable,
	182	.irq_enable = arizona_irq_enable,
c38715fe	183	.irq_set_wake = arizona_irq_set_wake,
966cdc96 MB	184	};
966cdc96 MB	185
dedf24a2	186	static struct lock_class_key arizona_irq_lock_class;
39c3fd58	187	static struct lock_class_key arizona_irq_request_class;
dedf24a2	188
966cdc96 MB	189	static int arizona_irq_map(struct irq_domain *h, unsigned int virq,
	190	irq_hw_number_t hw)
	191	{
0a464dfd	192	struct arizona *data = h->host_data;
966cdc96 MB	193
966cdc96 MB	194	irq_set_chip_data(virq, data);
39c3fd58 AL	195	irq_set_lockdep_class(virq, &arizona_irq_lock_class,
39c3fd58 AL	196	&arizona_irq_request_class);
cfeb35da	197	irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq);
966cdc96	198	irq_set_nested_thread(virq, 1);
966cdc96	199	irq_set_noprobe(virq);
966cdc96 MB	200
	201	return 0;
	202	}
	203
7ce7b26f	204	static const struct irq_domain_ops arizona_domain_ops = {
966cdc96 MB	205	.map = arizona_irq_map,
	206	.xlate = irq_domain_xlate_twocell,
	207	};
	208
	209	int arizona_irq_init(struct arizona *arizona)
	210	{
	211	int flags = IRQF_ONESHOT;
003db34e	212	int ret;
966cdc96	213	const struct regmap_irq_chip aod, irq;
22c75fe7	214	struct irq_data *irq_data;
3dfaff27	215	unsigned int virq;
966cdc96	216
30a2af3a CK	217	arizona->ctrlif_error = true;
30a2af3a CK	218
966cdc96	219	switch (arizona->type) {
863df8d5	220	#ifdef CONFIG_MFD_WM5102
966cdc96 MB	221	case WM5102:
	222	aod = &wm5102_aod;
	223	irq = &wm5102_irq;
92d80139	224
30a2af3a	225	arizona->ctrlif_error = false;
966cdc96	226	break;
e102befe MB	227	#endif
	228	#ifdef CONFIG_MFD_WM5110
	229	case WM5110:
e5d4ef0d	230	case WM8280:
e102befe	231	aod = &wm5110_aod;
3215501f CK	232
	233	switch (arizona->rev) {
	234	case 0 ... 2:
	235	irq = &wm5110_irq;
	236	break;
	237	default:
	238	irq = &wm5110_revd_irq;
	239	break;
	240	}
92d80139	241
30a2af3a	242	arizona->ctrlif_error = false;
e102befe	243	break;
863df8d5	244	#endif
ea1f3339 RF	245	#ifdef CONFIG_MFD_CS47L24
	246	case WM1831:
	247	case CS47L24:
	248	aod = NULL;
	249	irq = &cs47l24_irq;
	250
	251	arizona->ctrlif_error = false;
	252	break;
	253	#endif
dc7d4863 CK	254	#ifdef CONFIG_MFD_WM8997
	255	case WM8997:
	256	aod = &wm8997_aod;
	257	irq = &wm8997_irq;
	258
30a2af3a	259	arizona->ctrlif_error = false;
dc7d4863 CK	260	break;
dc7d4863 CK	261	#endif
6887b042 RF	262	#ifdef CONFIG_MFD_WM8998
	263	case WM8998:
	264	case WM1814:
	265	aod = &wm8998_aod;
	266	irq = &wm8998_irq;
	267
	268	arizona->ctrlif_error = false;
	269	break;
	270	#endif
966cdc96 MB	271	default:
	272	BUG_ON("Unknown Arizona class device" == NULL);
	273	return -EINVAL;
	274	}
	275
1816cb34 MB	276	/* Disable all wake sources by default */
	277	regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0);
	278
22c75fe7 MB	279	/* Read the flags from the interrupt controller if not specified */
	280	if (!arizona->pdata.irq_flags) {
	281	irq_data = irq_get_irq_data(arizona->irq);
	282	if (!irq_data) {
	283	dev_err(arizona->dev, "Invalid IRQ: %d\n",
	284	arizona->irq);
	285	return -EINVAL;
	286	}
	287
	288	arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data);
	289	switch (arizona->pdata.irq_flags) {
	290	case IRQF_TRIGGER_LOW:
	291	case IRQF_TRIGGER_HIGH:
	292	case IRQF_TRIGGER_RISING:
	293	case IRQF_TRIGGER_FALLING:
	294	break;
	295
	296	case IRQ_TYPE_NONE:
	297	default:
	298	/* Device default */
	299	arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
	300	break;
	301	}
	302	}
f8a0941f MB	303
	304	if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH \|
	305	IRQF_TRIGGER_RISING)) {
966cdc96 MB	306	ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1,
	307	ARIZONA_IRQ_POL, 0);
	308	if (ret != 0) {
	309	dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n",
	310	ret);
	311	goto err;
	312	}
966cdc96 MB	313	}
966cdc96 MB	314
f8a0941f MB	315	flags \|= arizona->pdata.irq_flags;
f8a0941f MB	316
966cdc96 MB	317	/* Allocate a virtual IRQ domain to distribute to the regmap domains */
	318	arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops,
	319	arizona);
	320	if (!arizona->virq) {
b7dea5dc	321	dev_err(arizona->dev, "Failed to add core IRQ domain\n");
966cdc96 MB	322	ret = -EINVAL;
	323	goto err;
	324	}
	325
ea1f3339	326	if (aod) {
3dfaff27 CK	327	virq = irq_create_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX);
	328	if (!virq) {
	329	dev_err(arizona->dev, "Failed to map AOD IRQs\n");
	330	ret = -EINVAL;
	331	goto err_domain;
	332	}
	333
	334	ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT,
	335	0, aod, &arizona->aod_irq_chip);
ea1f3339 RF	336	if (ret != 0) {
	337	dev_err(arizona->dev,
	338	"Failed to add AOD IRQs: %d\n", ret);
3dfaff27	339	goto err_map_aod;
ea1f3339	340	}
966cdc96 MB	341	}
966cdc96 MB	342
3dfaff27 CK	343	virq = irq_create_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX);
	344	if (!virq) {
	345	dev_err(arizona->dev, "Failed to map main IRQs\n");
	346	ret = -EINVAL;
	347	goto err_aod;
	348	}
	349
	350	ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT,
	351	0, irq, &arizona->irq_chip);
966cdc96	352	if (ret != 0) {
d1cb4cc9	353	dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret);
3dfaff27	354	goto err_map_main_irq;
966cdc96 MB	355	}
966cdc96 MB	356
3092f805 MB	357	/* Used to emulate edge trigger and to work around broken pinmux */
	358	if (arizona->pdata.irq_gpio) {
	359	if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) {
	360	dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n",
	361	arizona->irq, arizona->pdata.irq_gpio,
	362	gpio_to_irq(arizona->pdata.irq_gpio));
	363	arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio);
	364	}
	365
	366	ret = devm_gpio_request_one(arizona->dev,
	367	arizona->pdata.irq_gpio,
	368	GPIOF_IN, "arizona IRQ");
	369	if (ret != 0) {
	370	dev_err(arizona->dev,
	371	"Failed to request IRQ GPIO %d:: %d\n",
	372	arizona->pdata.irq_gpio, ret);
	373	arizona->pdata.irq_gpio = 0;
	374	}
	375	}
	376
966cdc96 MB	377	ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread,
	378	flags, "arizona", arizona);
	379
	380	if (ret != 0) {
7994c664	381	dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n",
966cdc96 MB	382	arizona->irq, ret);
	383	goto err_main_irq;
	384	}
	385
6c006b1b	386	/* Make sure the boot done IRQ is unmasked for resumes */
003db34e CK	387	ret = arizona_request_irq(arizona, ARIZONA_IRQ_BOOT_DONE, "Boot done",
003db34e CK	388	arizona_boot_done, arizona);
6c006b1b CK	389	if (ret != 0) {
	390	dev_err(arizona->dev, "Failed to request boot done %d: %d\n",
	391	arizona->irq, ret);
	392	goto err_boot_done;
	393	}
	394
	395	/* Handle control interface errors in the core */
	396	if (arizona->ctrlif_error) {
003db34e CK	397	ret = arizona_request_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR,
	398	"Control interface error",
	399	arizona_ctrlif_err, arizona);
6c006b1b CK	400	if (ret != 0) {
	401	dev_err(arizona->dev,
	402	"Failed to request CTRLIF_ERR %d: %d\n",
	403	arizona->irq, ret);
	404	goto err_ctrlif;
	405	}
	406	}
	407
966cdc96 MB	408	return 0;
966cdc96 MB	409
966cdc96	410	err_ctrlif:
003db34e	411	arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona);
966cdc96	412	err_boot_done:
6c006b1b CK	413	free_irq(arizona->irq, arizona);
6c006b1b CK	414	err_main_irq:
1a86dcb3 CK	415	regmap_del_irq_chip(irq_find_mapping(arizona->virq,
1a86dcb3 CK	416	ARIZONA_MAIN_IRQ_INDEX),
966cdc96	417	arizona->irq_chip);
3dfaff27 CK	418	err_map_main_irq:
	419	irq_dispose_mapping(irq_find_mapping(arizona->virq,
	420	ARIZONA_MAIN_IRQ_INDEX));
966cdc96	421	err_aod:
1a86dcb3 CK	422	regmap_del_irq_chip(irq_find_mapping(arizona->virq,
1a86dcb3 CK	423	ARIZONA_AOD_IRQ_INDEX),
966cdc96	424	arizona->aod_irq_chip);
3dfaff27 CK	425	err_map_aod:
	426	irq_dispose_mapping(irq_find_mapping(arizona->virq,
	427	ARIZONA_AOD_IRQ_INDEX));
	428	err_domain:
	429	irq_domain_remove(arizona->virq);
966cdc96 MB	430	err:
	431	return ret;
	432	}
	433
	434	int arizona_irq_exit(struct arizona *arizona)
	435	{
3dfaff27 CK	436	unsigned int virq;
3dfaff27 CK	437
30a2af3a	438	if (arizona->ctrlif_error)
003db34e CK	439	arizona_free_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, arizona);
	440	arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona);
	441
3dfaff27 CK	442	virq = irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX);
	443	regmap_del_irq_chip(virq, arizona->irq_chip);
	444	irq_dispose_mapping(virq);
	445
	446	virq = irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX);
	447	regmap_del_irq_chip(virq, arizona->aod_irq_chip);
	448	irq_dispose_mapping(virq);
	449
	450	irq_domain_remove(arizona->virq);
	451
966cdc96 MB	452	free_irq(arizona->irq, arizona);
	453
	454	return 0;
	455	}