[linux-2.6-block.git] / drivers / mfd / wm8350-irq.c

/*
 * wm8350-irq.c  --  IRQ support for Wolfson WM8350
 *
 * Copyright 2007, 2008, 2009 Wolfson Microelectronics PLC.
 *
 * Author: Liam Girdwood, Mark Brown
 *
 *  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.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/bug.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>

#include <linux/mfd/wm8350/core.h>
#include <linux/mfd/wm8350/audio.h>
#include <linux/mfd/wm8350/comparator.h>
#include <linux/mfd/wm8350/gpio.h>
#include <linux/mfd/wm8350/pmic.h>
#include <linux/mfd/wm8350/rtc.h>
#include <linux/mfd/wm8350/supply.h>
#include <linux/mfd/wm8350/wdt.h>

#define WM8350_INT_OFFSET_1                     0
#define WM8350_INT_OFFSET_2                     1
#define WM8350_POWER_UP_INT_OFFSET              2
#define WM8350_UNDER_VOLTAGE_INT_OFFSET         3
#define WM8350_OVER_CURRENT_INT_OFFSET          4
#define WM8350_GPIO_INT_OFFSET                  5
#define WM8350_COMPARATOR_INT_OFFSET            6

struct wm8350_irq_data {
	int primary;
	int reg;
	int mask;
	int primary_only;
};

static struct wm8350_irq_data wm8350_irqs[] = {
	[WM8350_IRQ_OC_LS] = {
		.primary = WM8350_OC_INT,
		.reg = WM8350_OVER_CURRENT_INT_OFFSET,
		.mask = WM8350_OC_LS_EINT,
		.primary_only = 1,
	},
	[WM8350_IRQ_UV_DC1] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_DC1_EINT,
	},
	[WM8350_IRQ_UV_DC2] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_DC2_EINT,
	},
	[WM8350_IRQ_UV_DC3] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_DC3_EINT,
	},
	[WM8350_IRQ_UV_DC4] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_DC4_EINT,
	},
	[WM8350_IRQ_UV_DC5] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_DC5_EINT,
	},
	[WM8350_IRQ_UV_DC6] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_DC6_EINT,
	},
	[WM8350_IRQ_UV_LDO1] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_LDO1_EINT,
	},
	[WM8350_IRQ_UV_LDO2] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_LDO2_EINT,
	},
	[WM8350_IRQ_UV_LDO3] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_LDO3_EINT,
	},
	[WM8350_IRQ_UV_LDO4] = {
		.primary = WM8350_UV_INT,
		.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
		.mask = WM8350_UV_LDO4_EINT,
	},
	[WM8350_IRQ_CHG_BAT_HOT] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_BAT_HOT_EINT,
	},
	[WM8350_IRQ_CHG_BAT_COLD] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_BAT_COLD_EINT,
	},
	[WM8350_IRQ_CHG_BAT_FAIL] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_BAT_FAIL_EINT,
	},
	[WM8350_IRQ_CHG_TO] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_TO_EINT,
	},
	[WM8350_IRQ_CHG_END] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_END_EINT,
	},
	[WM8350_IRQ_CHG_START] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_START_EINT,
	},
	[WM8350_IRQ_CHG_FAST_RDY] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_FAST_RDY_EINT,
	},
	[WM8350_IRQ_CHG_VBATT_LT_3P9] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_VBATT_LT_3P9_EINT,
	},
	[WM8350_IRQ_CHG_VBATT_LT_3P1] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_VBATT_LT_3P1_EINT,
	},
	[WM8350_IRQ_CHG_VBATT_LT_2P85] = {
		.primary = WM8350_CHG_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_CHG_VBATT_LT_2P85_EINT,
	},
	[WM8350_IRQ_RTC_ALM] = {
		.primary = WM8350_RTC_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_RTC_ALM_EINT,
	},
	[WM8350_IRQ_RTC_SEC] = {
		.primary = WM8350_RTC_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_RTC_SEC_EINT,
	},
	[WM8350_IRQ_RTC_PER] = {
		.primary = WM8350_RTC_INT,
		.reg = WM8350_INT_OFFSET_1,
		.mask = WM8350_RTC_PER_EINT,
	},
	[WM8350_IRQ_CS1] = {
		.primary = WM8350_CS_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_CS1_EINT,
	},
	[WM8350_IRQ_CS2] = {
		.primary = WM8350_CS_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_CS2_EINT,
	},
	[WM8350_IRQ_SYS_HYST_COMP_FAIL] = {
		.primary = WM8350_SYS_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_SYS_HYST_COMP_FAIL_EINT,
	},
	[WM8350_IRQ_SYS_CHIP_GT115] = {
		.primary = WM8350_SYS_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_SYS_CHIP_GT115_EINT,
	},
	[WM8350_IRQ_SYS_CHIP_GT140] = {
		.primary = WM8350_SYS_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_SYS_CHIP_GT140_EINT,
	},
	[WM8350_IRQ_SYS_WDOG_TO] = {
		.primary = WM8350_SYS_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_SYS_WDOG_TO_EINT,
	},
	[WM8350_IRQ_AUXADC_DATARDY] = {
		.primary = WM8350_AUXADC_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_AUXADC_DATARDY_EINT,
	},
	[WM8350_IRQ_AUXADC_DCOMP4] = {
		.primary = WM8350_AUXADC_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_AUXADC_DCOMP4_EINT,
	},
	[WM8350_IRQ_AUXADC_DCOMP3] = {
		.primary = WM8350_AUXADC_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_AUXADC_DCOMP3_EINT,
	},
	[WM8350_IRQ_AUXADC_DCOMP2] = {
		.primary = WM8350_AUXADC_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_AUXADC_DCOMP2_EINT,
	},
	[WM8350_IRQ_AUXADC_DCOMP1] = {
		.primary = WM8350_AUXADC_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_AUXADC_DCOMP1_EINT,
	},
	[WM8350_IRQ_USB_LIMIT] = {
		.primary = WM8350_USB_INT,
		.reg = WM8350_INT_OFFSET_2,
		.mask = WM8350_USB_LIMIT_EINT,
		.primary_only = 1,
	},
	[WM8350_IRQ_WKUP_OFF_STATE] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_OFF_STATE_EINT,
	},
	[WM8350_IRQ_WKUP_HIB_STATE] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_HIB_STATE_EINT,
	},
	[WM8350_IRQ_WKUP_CONV_FAULT] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_CONV_FAULT_EINT,
	},
	[WM8350_IRQ_WKUP_WDOG_RST] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_WDOG_RST_EINT,
	},
	[WM8350_IRQ_WKUP_GP_PWR_ON] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_GP_PWR_ON_EINT,
	},
	[WM8350_IRQ_WKUP_ONKEY] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_ONKEY_EINT,
	},
	[WM8350_IRQ_WKUP_GP_WAKEUP] = {
		.primary = WM8350_WKUP_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_WKUP_GP_WAKEUP_EINT,
	},
	[WM8350_IRQ_CODEC_JCK_DET_L] = {
		.primary = WM8350_CODEC_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_CODEC_JCK_DET_L_EINT,
	},
	[WM8350_IRQ_CODEC_JCK_DET_R] = {
		.primary = WM8350_CODEC_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_CODEC_JCK_DET_R_EINT,
	},
	[WM8350_IRQ_CODEC_MICSCD] = {
		.primary = WM8350_CODEC_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_CODEC_MICSCD_EINT,
	},
	[WM8350_IRQ_CODEC_MICD] = {
		.primary = WM8350_CODEC_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_CODEC_MICD_EINT,
	},
	[WM8350_IRQ_EXT_USB_FB] = {
		.primary = WM8350_EXT_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_EXT_USB_FB_EINT,
	},
	[WM8350_IRQ_EXT_WALL_FB] = {
		.primary = WM8350_EXT_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_EXT_WALL_FB_EINT,
	},
	[WM8350_IRQ_EXT_BAT_FB] = {
		.primary = WM8350_EXT_INT,
		.reg = WM8350_COMPARATOR_INT_OFFSET,
		.mask = WM8350_EXT_BAT_FB_EINT,
	},
	[WM8350_IRQ_GPIO(0)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP0_EINT,
	},
	[WM8350_IRQ_GPIO(1)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP1_EINT,
	},
	[WM8350_IRQ_GPIO(2)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP2_EINT,
	},
	[WM8350_IRQ_GPIO(3)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP3_EINT,
	},
	[WM8350_IRQ_GPIO(4)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP4_EINT,
	},
	[WM8350_IRQ_GPIO(5)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP5_EINT,
	},
	[WM8350_IRQ_GPIO(6)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP6_EINT,
	},
	[WM8350_IRQ_GPIO(7)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP7_EINT,
	},
	[WM8350_IRQ_GPIO(8)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP8_EINT,
	},
	[WM8350_IRQ_GPIO(9)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP9_EINT,
	},
	[WM8350_IRQ_GPIO(10)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP10_EINT,
	},
	[WM8350_IRQ_GPIO(11)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP11_EINT,
	},
	[WM8350_IRQ_GPIO(12)] = {
		.primary = WM8350_GP_INT,
		.reg = WM8350_GPIO_INT_OFFSET,
		.mask = WM8350_GP12_EINT,
	},
};

static inline struct wm8350_irq_data *irq_to_wm8350_irq(struct wm8350 *wm8350,
							int irq)
{
	return &wm8350_irqs[irq - wm8350->irq_base];
}

/*
 * This is a threaded IRQ handler so can access I2C/SPI.  Since all
 * interrupts are clear on read the IRQ line will be reasserted and
 * the physical IRQ will be handled again if another interrupt is
 * asserted while we run - in the normal course of events this is a
 * rare occurrence so we save I2C/SPI reads.  We're also assuming that
 * it's rare to get lots of interrupts firing simultaneously so try to
 * minimise I/O.
 */
static irqreturn_t wm8350_irq(int irq, void *irq_data)
{
	struct wm8350 *wm8350 = irq_data;
	u16 level_one;
	u16 sub_reg[WM8350_NUM_IRQ_REGS];
	int read_done[WM8350_NUM_IRQ_REGS];
	struct wm8350_irq_data *data;
	int i;

	level_one = wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS)
		& ~wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK);

	if (!level_one)
		return IRQ_NONE;

	memset(&read_done, 0, sizeof(read_done));

	for (i = 0; i < ARRAY_SIZE(wm8350_irqs); i++) {
		data = &wm8350_irqs[i];

		if (!(level_one & data->primary))
			continue;

		if (!read_done[data->reg]) {
			sub_reg[data->reg] =
				wm8350_reg_read(wm8350, WM8350_INT_STATUS_1 +
						data->reg);
			sub_reg[data->reg] &= ~wm8350->irq_masks[data->reg];
			read_done[data->reg] = 1;
		}

		if (sub_reg[data->reg] & data->mask)
			handle_nested_irq(wm8350->irq_base + i);
	}

	return IRQ_HANDLED;
}

static void wm8350_irq_lock(struct irq_data *data)
{
	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);

	mutex_lock(&wm8350->irq_lock);
}

static void wm8350_irq_sync_unlock(struct irq_data *data)
{
	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
	int i;

	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
		/* If there's been a change in the mask write it back
		 * to the hardware. */
		WARN_ON(regmap_update_bits(wm8350->regmap,
					   WM8350_INT_STATUS_1_MASK + i,
					   0xffff, wm8350->irq_masks[i]));
	}

	mutex_unlock(&wm8350->irq_lock);
}

static void wm8350_irq_enable(struct irq_data *data)
{
	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
	struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350,
							     data->irq);

	wm8350->irq_masks[irq_data->reg] &= ~irq_data->mask;
}

static void wm8350_irq_disable(struct irq_data *data)
{
	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
	struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350,
							     data->irq);

	wm8350->irq_masks[irq_data->reg] |= irq_data->mask;
}

static struct irq_chip wm8350_irq_chip = {
	.name			= "wm8350",
	.irq_bus_lock		= wm8350_irq_lock,
	.irq_bus_sync_unlock	= wm8350_irq_sync_unlock,
	.irq_disable		= wm8350_irq_disable,
	.irq_enable		= wm8350_irq_enable,
};

int wm8350_irq_init(struct wm8350 *wm8350, int irq,
		    struct wm8350_platform_data *pdata)
{
	int ret, cur_irq, i;
	int flags = IRQF_ONESHOT;
	int irq_base = -1;

	if (!irq) {
		dev_warn(wm8350->dev, "No interrupt support, no core IRQ\n");
		return 0;
	}

	/* Mask top level interrupts */
	wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0xFFFF);

	/* Mask all individual interrupts by default and cache the
	 * masks.  We read the masks back since there are unwritable
	 * bits in the mask registers. */
	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
		wm8350_reg_write(wm8350, WM8350_INT_STATUS_1_MASK + i,
				 0xFFFF);
		wm8350->irq_masks[i] =
			wm8350_reg_read(wm8350,
					WM8350_INT_STATUS_1_MASK + i);
	}

	mutex_init(&wm8350->irq_lock);
	wm8350->chip_irq = irq;

	if (pdata && pdata->irq_base > 0)
		irq_base = pdata->irq_base;

	wm8350->irq_base =
		irq_alloc_descs(irq_base, 0, ARRAY_SIZE(wm8350_irqs), 0);
	if (wm8350->irq_base < 0) {
		dev_warn(wm8350->dev, "Allocating irqs failed with %d\n",
			wm8350->irq_base);
		return 0;
	}

	if (pdata && pdata->irq_high) {
		flags |= IRQF_TRIGGER_HIGH;

		wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
				WM8350_IRQ_POL);
	} else {
		flags |= IRQF_TRIGGER_LOW;

		wm8350_clear_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
				  WM8350_IRQ_POL);
	}

	/* Register with genirq */
	for (cur_irq = wm8350->irq_base;
	     cur_irq < ARRAY_SIZE(wm8350_irqs) + wm8350->irq_base;
	     cur_irq++) {
		irq_set_chip_data(cur_irq, wm8350);
		irq_set_chip_and_handler(cur_irq, &wm8350_irq_chip,
					 handle_edge_irq);
		irq_set_nested_thread(cur_irq, 1);

		irq_clear_status_flags(cur_irq, IRQ_NOREQUEST | IRQ_NOPROBE);
	}

	ret = request_threaded_irq(irq, NULL, wm8350_irq, flags,
				   "wm8350", wm8350);
	if (ret != 0)
		dev_err(wm8350->dev, "Failed to request IRQ: %d\n", ret);

	/* Allow interrupts to fire */
	wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0);

	return ret;
}

int wm8350_irq_exit(struct wm8350 *wm8350)
{
	free_irq(wm8350->chip_irq, wm8350);
	return 0;
}
Commit	Line	Data
e0a3389a MB	1	/*
	2	* wm8350-irq.c -- IRQ support for Wolfson WM8350
	3	*
	4	* Copyright 2007, 2008, 2009 Wolfson Microelectronics PLC.
	5	*
	6	* Author: Liam Girdwood, Mark Brown
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/kernel.h>
	16	#include <linux/module.h>
e0a3389a MB	17	#include <linux/bug.h>
	18	#include <linux/device.h>
	19	#include <linux/interrupt.h>
760e4518	20	#include <linux/irq.h>
e0a3389a MB	21
	22	#include <linux/mfd/wm8350/core.h>
	23	#include <linux/mfd/wm8350/audio.h>
	24	#include <linux/mfd/wm8350/comparator.h>
	25	#include <linux/mfd/wm8350/gpio.h>
	26	#include <linux/mfd/wm8350/pmic.h>
	27	#include <linux/mfd/wm8350/rtc.h>
	28	#include <linux/mfd/wm8350/supply.h>
	29	#include <linux/mfd/wm8350/wdt.h>
	30
0c7229f9 MB	31	#define WM8350_INT_OFFSET_1 0
	32	#define WM8350_INT_OFFSET_2 1
	33	#define WM8350_POWER_UP_INT_OFFSET 2
	34	#define WM8350_UNDER_VOLTAGE_INT_OFFSET 3
	35	#define WM8350_OVER_CURRENT_INT_OFFSET 4
	36	#define WM8350_GPIO_INT_OFFSET 5
	37	#define WM8350_COMPARATOR_INT_OFFSET 6
	38
	39	struct wm8350_irq_data {
	40	int primary;
	41	int reg;
	42	int mask;
	43	int primary_only;
	44	};
	45
	46	static struct wm8350_irq_data wm8350_irqs[] = {
	47	[WM8350_IRQ_OC_LS] = {
	48	.primary = WM8350_OC_INT,
	49	.reg = WM8350_OVER_CURRENT_INT_OFFSET,
	50	.mask = WM8350_OC_LS_EINT,
	51	.primary_only = 1,
	52	},
	53	[WM8350_IRQ_UV_DC1] = {
	54	.primary = WM8350_UV_INT,
	55	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	56	.mask = WM8350_UV_DC1_EINT,
	57	},
	58	[WM8350_IRQ_UV_DC2] = {
	59	.primary = WM8350_UV_INT,
	60	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	61	.mask = WM8350_UV_DC2_EINT,
	62	},
	63	[WM8350_IRQ_UV_DC3] = {
	64	.primary = WM8350_UV_INT,
	65	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	66	.mask = WM8350_UV_DC3_EINT,
	67	},
	68	[WM8350_IRQ_UV_DC4] = {
	69	.primary = WM8350_UV_INT,
	70	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	71	.mask = WM8350_UV_DC4_EINT,
	72	},
	73	[WM8350_IRQ_UV_DC5] = {
	74	.primary = WM8350_UV_INT,
	75	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	76	.mask = WM8350_UV_DC5_EINT,
	77	},
	78	[WM8350_IRQ_UV_DC6] = {
	79	.primary = WM8350_UV_INT,
	80	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	81	.mask = WM8350_UV_DC6_EINT,
	82	},
	83	[WM8350_IRQ_UV_LDO1] = {
	84	.primary = WM8350_UV_INT,
	85	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	86	.mask = WM8350_UV_LDO1_EINT,
	87	},
	88	[WM8350_IRQ_UV_LDO2] = {
	89	.primary = WM8350_UV_INT,
	90	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
	91	.mask = WM8350_UV_LDO2_EINT,
	92	},
	93	[WM8350_IRQ_UV_LDO3] = {
	94	.primary = WM8350_UV_INT,
95	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
96	.mask = WM8350_UV_LDO3_EINT,
97	},
98	[WM8350_IRQ_UV_LDO4] = {
99	.primary = WM8350_UV_INT,
100	.reg = WM8350_UNDER_VOLTAGE_INT_OFFSET,
101	.mask = WM8350_UV_LDO4_EINT,
102	},
103	[WM8350_IRQ_CHG_BAT_HOT] = {
104	.primary = WM8350_CHG_INT,
105	.reg = WM8350_INT_OFFSET_1,
106	.mask = WM8350_CHG_BAT_HOT_EINT,
107	},
108	[WM8350_IRQ_CHG_BAT_COLD] = {
109	.primary = WM8350_CHG_INT,
110	.reg = WM8350_INT_OFFSET_1,
111	.mask = WM8350_CHG_BAT_COLD_EINT,
112	},
113	[WM8350_IRQ_CHG_BAT_FAIL] = {
114	.primary = WM8350_CHG_INT,
115	.reg = WM8350_INT_OFFSET_1,
116	.mask = WM8350_CHG_BAT_FAIL_EINT,
117	},
118	[WM8350_IRQ_CHG_TO] = {
119	.primary = WM8350_CHG_INT,
120	.reg = WM8350_INT_OFFSET_1,
121	.mask = WM8350_CHG_TO_EINT,
122	},
123	[WM8350_IRQ_CHG_END] = {
124	.primary = WM8350_CHG_INT,
125	.reg = WM8350_INT_OFFSET_1,
126	.mask = WM8350_CHG_END_EINT,
127	},
128	[WM8350_IRQ_CHG_START] = {
129	.primary = WM8350_CHG_INT,
130	.reg = WM8350_INT_OFFSET_1,
131	.mask = WM8350_CHG_START_EINT,
132	},
133	[WM8350_IRQ_CHG_FAST_RDY] = {
134	.primary = WM8350_CHG_INT,
135	.reg = WM8350_INT_OFFSET_1,
136	.mask = WM8350_CHG_FAST_RDY_EINT,
137	},
138	[WM8350_IRQ_CHG_VBATT_LT_3P9] = {
139	.primary = WM8350_CHG_INT,
140	.reg = WM8350_INT_OFFSET_1,
141	.mask = WM8350_CHG_VBATT_LT_3P9_EINT,
142	},
143	[WM8350_IRQ_CHG_VBATT_LT_3P1] = {
144	.primary = WM8350_CHG_INT,
145	.reg = WM8350_INT_OFFSET_1,
146	.mask = WM8350_CHG_VBATT_LT_3P1_EINT,
147	},
148	[WM8350_IRQ_CHG_VBATT_LT_2P85] = {
149	.primary = WM8350_CHG_INT,
150	.reg = WM8350_INT_OFFSET_1,
151	.mask = WM8350_CHG_VBATT_LT_2P85_EINT,
152	},
153	[WM8350_IRQ_RTC_ALM] = {
154	.primary = WM8350_RTC_INT,
155	.reg = WM8350_INT_OFFSET_1,
156	.mask = WM8350_RTC_ALM_EINT,
157	},
158	[WM8350_IRQ_RTC_SEC] = {
159	.primary = WM8350_RTC_INT,
160	.reg = WM8350_INT_OFFSET_1,
161	.mask = WM8350_RTC_SEC_EINT,
162	},
163	[WM8350_IRQ_RTC_PER] = {
164	.primary = WM8350_RTC_INT,
165	.reg = WM8350_INT_OFFSET_1,
166	.mask = WM8350_RTC_PER_EINT,
167	},
168	[WM8350_IRQ_CS1] = {
169	.primary = WM8350_CS_INT,
170	.reg = WM8350_INT_OFFSET_2,
171	.mask = WM8350_CS1_EINT,
172	},
173	[WM8350_IRQ_CS2] = {
174	.primary = WM8350_CS_INT,
175	.reg = WM8350_INT_OFFSET_2,
176	.mask = WM8350_CS2_EINT,
177	},
178	[WM8350_IRQ_SYS_HYST_COMP_FAIL] = {
179	.primary = WM8350_SYS_INT,
180	.reg = WM8350_INT_OFFSET_2,
181	.mask = WM8350_SYS_HYST_COMP_FAIL_EINT,
182	},
183	[WM8350_IRQ_SYS_CHIP_GT115] = {
184	.primary = WM8350_SYS_INT,
185	.reg = WM8350_INT_OFFSET_2,
186	.mask = WM8350_SYS_CHIP_GT115_EINT,
187	},
188	[WM8350_IRQ_SYS_CHIP_GT140] = {
189	.primary = WM8350_SYS_INT,
190	.reg = WM8350_INT_OFFSET_2,
191	.mask = WM8350_SYS_CHIP_GT140_EINT,
192	},
193	[WM8350_IRQ_SYS_WDOG_TO] = {
194	.primary = WM8350_SYS_INT,
195	.reg = WM8350_INT_OFFSET_2,
196	.mask = WM8350_SYS_WDOG_TO_EINT,
197	},
198	[WM8350_IRQ_AUXADC_DATARDY] = {
199	.primary = WM8350_AUXADC_INT,
200	.reg = WM8350_INT_OFFSET_2,
201	.mask = WM8350_AUXADC_DATARDY_EINT,
202	},
203	[WM8350_IRQ_AUXADC_DCOMP4] = {
204	.primary = WM8350_AUXADC_INT,
205	.reg = WM8350_INT_OFFSET_2,
206	.mask = WM8350_AUXADC_DCOMP4_EINT,
207	},
208	[WM8350_IRQ_AUXADC_DCOMP3] = {
209	.primary = WM8350_AUXADC_INT,
210	.reg = WM8350_INT_OFFSET_2,
211	.mask = WM8350_AUXADC_DCOMP3_EINT,
212	},
213	[WM8350_IRQ_AUXADC_DCOMP2] = {
214	.primary = WM8350_AUXADC_INT,
215	.reg = WM8350_INT_OFFSET_2,
216	.mask = WM8350_AUXADC_DCOMP2_EINT,
217	},
218	[WM8350_IRQ_AUXADC_DCOMP1] = {
219	.primary = WM8350_AUXADC_INT,
220	.reg = WM8350_INT_OFFSET_2,
221	.mask = WM8350_AUXADC_DCOMP1_EINT,
222	},
223	[WM8350_IRQ_USB_LIMIT] = {
224	.primary = WM8350_USB_INT,
225	.reg = WM8350_INT_OFFSET_2,
226	.mask = WM8350_USB_LIMIT_EINT,
227	.primary_only = 1,
228	},
229	[WM8350_IRQ_WKUP_OFF_STATE] = {
230	.primary = WM8350_WKUP_INT,
231	.reg = WM8350_COMPARATOR_INT_OFFSET,
232	.mask = WM8350_WKUP_OFF_STATE_EINT,
233	},
234	[WM8350_IRQ_WKUP_HIB_STATE] = {
235	.primary = WM8350_WKUP_INT,
236	.reg = WM8350_COMPARATOR_INT_OFFSET,
237	.mask = WM8350_WKUP_HIB_STATE_EINT,
238	},
239	[WM8350_IRQ_WKUP_CONV_FAULT] = {
240	.primary = WM8350_WKUP_INT,
241	.reg = WM8350_COMPARATOR_INT_OFFSET,
242	.mask = WM8350_WKUP_CONV_FAULT_EINT,
243	},
244	[WM8350_IRQ_WKUP_WDOG_RST] = {
245	.primary = WM8350_WKUP_INT,
246	.reg = WM8350_COMPARATOR_INT_OFFSET,
247	.mask = WM8350_WKUP_WDOG_RST_EINT,
248	},
249	[WM8350_IRQ_WKUP_GP_PWR_ON] = {
250	.primary = WM8350_WKUP_INT,
251	.reg = WM8350_COMPARATOR_INT_OFFSET,
252	.mask = WM8350_WKUP_GP_PWR_ON_EINT,
253	},
254	[WM8350_IRQ_WKUP_ONKEY] = {
255	.primary = WM8350_WKUP_INT,
256	.reg = WM8350_COMPARATOR_INT_OFFSET,
257	.mask = WM8350_WKUP_ONKEY_EINT,
258	},
259	[WM8350_IRQ_WKUP_GP_WAKEUP] = {
260	.primary = WM8350_WKUP_INT,
261	.reg = WM8350_COMPARATOR_INT_OFFSET,
262	.mask = WM8350_WKUP_GP_WAKEUP_EINT,
263	},
264	[WM8350_IRQ_CODEC_JCK_DET_L] = {
265	.primary = WM8350_CODEC_INT,
266	.reg = WM8350_COMPARATOR_INT_OFFSET,
267	.mask = WM8350_CODEC_JCK_DET_L_EINT,
268	},
269	[WM8350_IRQ_CODEC_JCK_DET_R] = {
270	.primary = WM8350_CODEC_INT,
271	.reg = WM8350_COMPARATOR_INT_OFFSET,
272	.mask = WM8350_CODEC_JCK_DET_R_EINT,
273	},
274	[WM8350_IRQ_CODEC_MICSCD] = {
275	.primary = WM8350_CODEC_INT,
276	.reg = WM8350_COMPARATOR_INT_OFFSET,
277	.mask = WM8350_CODEC_MICSCD_EINT,
278	},
279	[WM8350_IRQ_CODEC_MICD] = {
280	.primary = WM8350_CODEC_INT,
281	.reg = WM8350_COMPARATOR_INT_OFFSET,
282	.mask = WM8350_CODEC_MICD_EINT,
283	},
284	[WM8350_IRQ_EXT_USB_FB] = {
285	.primary = WM8350_EXT_INT,
286	.reg = WM8350_COMPARATOR_INT_OFFSET,
287	.mask = WM8350_EXT_USB_FB_EINT,
288	},
289	[WM8350_IRQ_EXT_WALL_FB] = {
290	.primary = WM8350_EXT_INT,
291	.reg = WM8350_COMPARATOR_INT_OFFSET,
292	.mask = WM8350_EXT_WALL_FB_EINT,
293	},
294	[WM8350_IRQ_EXT_BAT_FB] = {
295	.primary = WM8350_EXT_INT,
296	.reg = WM8350_COMPARATOR_INT_OFFSET,
297	.mask = WM8350_EXT_BAT_FB_EINT,
298	},
299	[WM8350_IRQ_GPIO(0)] = {
300	.primary = WM8350_GP_INT,
301	.reg = WM8350_GPIO_INT_OFFSET,
302	.mask = WM8350_GP0_EINT,
303	},
304	[WM8350_IRQ_GPIO(1)] = {
305	.primary = WM8350_GP_INT,
306	.reg = WM8350_GPIO_INT_OFFSET,
307	.mask = WM8350_GP1_EINT,
308	},
309	[WM8350_IRQ_GPIO(2)] = {
310	.primary = WM8350_GP_INT,
311	.reg = WM8350_GPIO_INT_OFFSET,
312	.mask = WM8350_GP2_EINT,
313	},
314	[WM8350_IRQ_GPIO(3)] = {
315	.primary = WM8350_GP_INT,
316	.reg = WM8350_GPIO_INT_OFFSET,
317	.mask = WM8350_GP3_EINT,
318	},
319	[WM8350_IRQ_GPIO(4)] = {
320	.primary = WM8350_GP_INT,
321	.reg = WM8350_GPIO_INT_OFFSET,
322	.mask = WM8350_GP4_EINT,
323	},
324	[WM8350_IRQ_GPIO(5)] = {
325	.primary = WM8350_GP_INT,
326	.reg = WM8350_GPIO_INT_OFFSET,
327	.mask = WM8350_GP5_EINT,
328	},
329	[WM8350_IRQ_GPIO(6)] = {
330	.primary = WM8350_GP_INT,
331	.reg = WM8350_GPIO_INT_OFFSET,
332	.mask = WM8350_GP6_EINT,
333	},
334	[WM8350_IRQ_GPIO(7)] = {
335	.primary = WM8350_GP_INT,
336	.reg = WM8350_GPIO_INT_OFFSET,
337	.mask = WM8350_GP7_EINT,
338	},
339	[WM8350_IRQ_GPIO(8)] = {
340	.primary = WM8350_GP_INT,
341	.reg = WM8350_GPIO_INT_OFFSET,
342	.mask = WM8350_GP8_EINT,
343	},
344	[WM8350_IRQ_GPIO(9)] = {
345	.primary = WM8350_GP_INT,
346	.reg = WM8350_GPIO_INT_OFFSET,
347	.mask = WM8350_GP9_EINT,
348	},
349	[WM8350_IRQ_GPIO(10)] = {
350	.primary = WM8350_GP_INT,
351	.reg = WM8350_GPIO_INT_OFFSET,
352	.mask = WM8350_GP10_EINT,
353	},
354	[WM8350_IRQ_GPIO(11)] = {
355	.primary = WM8350_GP_INT,
356	.reg = WM8350_GPIO_INT_OFFSET,
357	.mask = WM8350_GP11_EINT,
358	},
359	[WM8350_IRQ_GPIO(12)] = {
360	.primary = WM8350_GP_INT,
361	.reg = WM8350_GPIO_INT_OFFSET,
362	.mask = WM8350_GP12_EINT,
363	},
364	};
365
760e4518 MB	366	static inline struct wm8350_irq_data irq_to_wm8350_irq(struct wm8350 wm8350,
760e4518 MB	367	int irq)
e0a3389a	368	{
760e4518	369	return &wm8350_irqs[irq - wm8350->irq_base];
e0a3389a MB	370	}
	371
	372	/*
	373	* This is a threaded IRQ handler so can access I2C/SPI. Since all
	374	* interrupts are clear on read the IRQ line will be reasserted and
	375	* the physical IRQ will be handled again if another interrupt is
	376	* asserted while we run - in the normal course of events this is a
760e4518 MB	377	* rare occurrence so we save I2C/SPI reads. We're also assuming that
	378	* it's rare to get lots of interrupts firing simultaneously so try to
	379	* minimise I/O.
e0a3389a	380	*/
0c7229f9	381	static irqreturn_t wm8350_irq(int irq, void *irq_data)
e0a3389a	382	{
0c7229f9 MB	383	struct wm8350 *wm8350 = irq_data;
	384	u16 level_one;
	385	u16 sub_reg[WM8350_NUM_IRQ_REGS];
	386	int read_done[WM8350_NUM_IRQ_REGS];
	387	struct wm8350_irq_data *data;
	388	int i;
e0a3389a	389
e0a3389a MB	390	level_one = wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS)
e0a3389a MB	391	& ~wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK);
e0a3389a	392
0c7229f9 MB	393	if (!level_one)
0c7229f9 MB	394	return IRQ_NONE;
e0a3389a	395
0c7229f9	396	memset(&read_done, 0, sizeof(read_done));
e0a3389a	397
0c7229f9 MB	398	for (i = 0; i < ARRAY_SIZE(wm8350_irqs); i++) {
0c7229f9 MB	399	data = &wm8350_irqs[i];
e0a3389a	400
0c7229f9 MB	401	if (!(level_one & data->primary))
0c7229f9 MB	402	continue;
e0a3389a	403
0c7229f9 MB	404	if (!read_done[data->reg]) {
	405	sub_reg[data->reg] =
	406	wm8350_reg_read(wm8350, WM8350_INT_STATUS_1 +
	407	data->reg);
760e4518	408	sub_reg[data->reg] &= ~wm8350->irq_masks[data->reg];
0c7229f9	409	read_done[data->reg] = 1;
e0a3389a	410	}
0c7229f9 MB	411
0c7229f9 MB	412	if (sub_reg[data->reg] & data->mask)
760e4518	413	handle_nested_irq(wm8350->irq_base + i);
e0a3389a MB	414	}
	415
	416	return IRQ_HANDLED;
	417	}
	418
fdcc475b	419	static void wm8350_irq_lock(struct irq_data *data)
e0a3389a	420	{
25a947f8	421	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
6a612746	422
760e4518	423	mutex_lock(&wm8350->irq_lock);
e0a3389a	424	}
e0a3389a	425
fdcc475b	426	static void wm8350_irq_sync_unlock(struct irq_data *data)
e0a3389a	427	{
25a947f8	428	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
760e4518	429	int i;
e0a3389a	430
760e4518 MB	431	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
	432	/* If there's been a change in the mask write it back
	433	* to the hardware. */
7fdb5d32 MB	434	WARN_ON(regmap_update_bits(wm8350->regmap,
	435	WM8350_INT_STATUS_1_MASK + i,
	436	0xffff, wm8350->irq_masks[i]));
760e4518	437	}
6a612746	438
760e4518	439	mutex_unlock(&wm8350->irq_lock);
e0a3389a	440	}
e0a3389a	441
fdcc475b	442	static void wm8350_irq_enable(struct irq_data *data)
e0a3389a	443	{
25a947f8	444	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
fdcc475b MB	445	struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350,
fdcc475b MB	446	data->irq);
760e4518 MB	447
760e4518 MB	448	wm8350->irq_masks[irq_data->reg] &= ~irq_data->mask;
e0a3389a	449	}
e0a3389a	450
fdcc475b	451	static void wm8350_irq_disable(struct irq_data *data)
e0a3389a	452	{
25a947f8	453	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
fdcc475b MB	454	struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350,
fdcc475b MB	455	data->irq);
760e4518 MB	456
760e4518 MB	457	wm8350->irq_masks[irq_data->reg] \|= irq_data->mask;
e0a3389a	458	}
760e4518 MB	459
760e4518 MB	460	static struct irq_chip wm8350_irq_chip = {
fdcc475b MB	461	.name = "wm8350",
	462	.irq_bus_lock = wm8350_irq_lock,
	463	.irq_bus_sync_unlock = wm8350_irq_sync_unlock,
	464	.irq_disable = wm8350_irq_disable,
	465	.irq_enable = wm8350_irq_enable,
760e4518	466	};
e0a3389a MB	467
	468	int wm8350_irq_init(struct wm8350 *wm8350, int irq,
	469	struct wm8350_platform_data *pdata)
	470	{
760e4518	471	int ret, cur_irq, i;
e0a3389a	472	int flags = IRQF_ONESHOT;
d1738aef	473	int irq_base = -1;
e0a3389a MB	474
e0a3389a MB	475	if (!irq) {
760e4518 MB	476	dev_warn(wm8350->dev, "No interrupt support, no core IRQ\n");
	477	return 0;
	478	}
	479
760e4518	480	/* Mask top level interrupts */
e0a3389a	481	wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0xFFFF);
e0a3389a	482
760e4518 MB	483	/* Mask all individual interrupts by default and cache the
	484	* masks. We read the masks back since there are unwritable
	485	* bits in the mask registers. */
	486	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
	487	wm8350_reg_write(wm8350, WM8350_INT_STATUS_1_MASK + i,
	488	0xFFFF);
	489	wm8350->irq_masks[i] =
	490	wm8350_reg_read(wm8350,
	491	WM8350_INT_STATUS_1_MASK + i);
	492	}
	493
	494	mutex_init(&wm8350->irq_lock);
e0a3389a MB	495	wm8350->chip_irq = irq;
e0a3389a MB	496
d1738aef SH	497	if (pdata && pdata->irq_base > 0)
	498	irq_base = pdata->irq_base;
	499
ebb37dca LJ	500	wm8350->irq_base =
ebb37dca LJ	501	irq_alloc_descs(irq_base, 0, ARRAY_SIZE(wm8350_irqs), 0);
d1738aef SH	502	if (wm8350->irq_base < 0) {
	503	dev_warn(wm8350->dev, "Allocating irqs failed with %d\n",
	504	wm8350->irq_base);
	505	return 0;
	506	}
	507
	508	if (pdata && pdata->irq_high) {
e0a3389a MB	509	flags \|= IRQF_TRIGGER_HIGH;
	510
	511	wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
	512	WM8350_IRQ_POL);
	513	} else {
	514	flags \|= IRQF_TRIGGER_LOW;
	515
	516	wm8350_clear_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
	517	WM8350_IRQ_POL);
	518	}
	519
760e4518 MB	520	/* Register with genirq */
	521	for (cur_irq = wm8350->irq_base;
	522	cur_irq < ARRAY_SIZE(wm8350_irqs) + wm8350->irq_base;
	523	cur_irq++) {
d5bb1221 TG	524	irq_set_chip_data(cur_irq, wm8350);
d5bb1221 TG	525	irq_set_chip_and_handler(cur_irq, &wm8350_irq_chip,
760e4518	526	handle_edge_irq);
d5bb1221	527	irq_set_nested_thread(cur_irq, 1);
760e4518	528
9bd09f34	529	irq_clear_status_flags(cur_irq, IRQ_NOREQUEST \| IRQ_NOPROBE);
760e4518 MB	530	}
760e4518 MB	531
e0a3389a MB	532	ret = request_threaded_irq(irq, NULL, wm8350_irq, flags,
	533	"wm8350", wm8350);
	534	if (ret != 0)
	535	dev_err(wm8350->dev, "Failed to request IRQ: %d\n", ret);
	536
760e4518 MB	537	/* Allow interrupts to fire */
	538	wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0);
	539
e0a3389a MB	540	return ret;
	541	}
	542
	543	int wm8350_irq_exit(struct wm8350 *wm8350)
	544	{
	545	free_irq(wm8350->chip_irq, wm8350);
	546	return 0;
	547	}