diff mbox

[v2,2/3] mfd: max8997: handle IRQs using regmap

Message ID 1394631466-6429-3-git-send-email-r.baldyga@samsung.com
State Superseded
Headers show

Commit Message

Robert Baldyga March 12, 2014, 1:37 p.m. UTC 
This patch modifies mfd driver to use regmap for handling interrupts.
It allows to simplify irq handling process. This modifications needed
to make small changes in function drivers, which use interrupts.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
---
 drivers/extcon/extcon-max8997.c     |   35 ++--
 drivers/mfd/Kconfig                 |    2 +-
 drivers/mfd/Makefile                |    2 +-
 drivers/mfd/max8997-irq.c           |  373 -----------------------------------
 drivers/mfd/max8997.c               |  113 ++++++++++-
 drivers/rtc/rtc-max8997.c           |    2 +-
 include/linux/mfd/max8997-private.h |   65 +++++-
 7 files changed, 183 insertions(+), 409 deletions(-)
 delete mode 100644 drivers/mfd/max8997-irq.c

Comments

Krzysztof Kozlowski March 12, 2014, 2:26 p.m. UTC | #1 
On Wed, 2014-03-12 at 14:37 +0100, Robert Baldyga wrote:
> This patch modifies mfd driver to use regmap for handling interrupts.
> It allows to simplify irq handling process. This modifications needed
> to make small changes in function drivers, which use interrupts.
> 
> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>

(...)

> diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
> index 782d7c9..26a360d 100644
> --- a/drivers/mfd/max8997.c
> +++ b/drivers/mfd/max8997.c
> @@ -64,6 +64,49 @@ static const struct regmap_config max8997_regmap_config = {
>  	.max_register = MAX8997_REG_PMIC_END,
>  };
>  
> +static const struct regmap_irq max8997_irqs[] = {
> +	/* PMIC_INT1 interrupts */
> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONR_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONF_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRON1SEC_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONR_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONF_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT2_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT1_MASK, },
> +	/* PMIC_INT2 interrupts */
> +	{ .reg_offset = 1, .mask = PMIC_INT2_JIGR_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_JIGF_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_MR_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS1OK_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS2OK_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS3OK_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS4OK_MASK, },
> +	/* PMIC_INT3 interrupts */
> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGINS_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRM_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_DCINOVP_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_TOPOFFR_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRSTF_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_MBCHGTMEXPD_MASK, },
> +	/* PMIC_INT4 interrupts */
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTC60S_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA1_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA2_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_SMPL_INT_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTC1S_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_WTSR_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_irq_chip = {
> +	.name			= "max8997",
> +	.status_base		= MAX8997_REG_INT1,
> +	.mask_base		= MAX8997_REG_INT1MSK,
> +	.mask_invert		= false,
> +	.num_regs		= 4,
> +	.irqs			= max8997_irqs,
> +	.num_irqs		= ARRAY_SIZE(max8997_irqs),
> +};
> +
>  static const struct regmap_config max8997_regmap_rtc_config = {
>  	.reg_bits = 8,
>  	.val_bits = 8,
> @@ -82,6 +125,31 @@ static const struct regmap_config max8997_regmap_muic_config = {
>  	.max_register = MAX8997_MUIC_REG_END,
>  };
>  
> +static const struct regmap_irq max8997_irqs_muic[] = {
> +	/* MUIC_INT1 interrupts */
> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADCLOW_MASK, },
> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADCERROR_MASK, },
> +	/* MUIC_INT2 interrupts */
> +	{ .reg_offset = 1, .mask = MUIC_INT2_CHGTYP_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_CHGDETRUN_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_DCDTMR_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_DBCHG_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_VBVOLT_MASK, },
> +	/* MUIC_INT3 interrupts */
> +	{ .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_irq_chip_muic = {
> +	.name			= "max8997-muic",
> +	.status_base		= MAX8997_MUIC_REG_INT1,
> +	.mask_base		= MAX8997_MUIC_REG_INTMASK1,
> +	.mask_invert		= true,
> +	.num_regs		= 3,
> +	.irqs			= max8997_irqs_muic,
> +	.num_irqs		= ARRAY_SIZE(max8997_irqs_muic),
> +};
> +
>  /*
>   * Only the common platform data elements for max8997 are parsed here from the
>   * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
> @@ -214,9 +282,26 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>  		goto err_regmap;
>  	}
>  
> -	pm_runtime_set_active(max8997->dev);
> +	ret = regmap_add_irq_chip(max8997->regmap, max8997->irq,
> +				IRQF_ONESHOT | IRQF_SHARED |
> +				IRQF_TRIGGER_FALLING, 0,
> +				&max8997_irq_chip, &max8997->irq_data);
> +	if (ret) {
> +		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
> +		goto err_irq;
> +	}

In case of error here you shouldn't call regmap_del_irq_chip() so:
	goto err_regmap
The regmap_add_irq_chip() may fail before or AFTER setting the value
under max8997->irq_data. However in both error cases the memory stored
there will be freed already by regmap_add_irq_chip().

>  
> -	max8997_irq_init(max8997);
> +	ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
> +				IRQF_ONESHOT | IRQF_SHARED |
> +				IRQF_TRIGGER_FALLING, 0,
> +				&max8997_irq_chip_muic,
> +				&max8997->irq_data_muic);
> +	if (ret) {
> +		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
> +		goto err_irq_muic;

Same as above - on error remove only one regmap_irq_chip
(max8997->irq_data), not both.


Best regards,
Krzysztof
Chanwoo Choi March 13, 2014, 2:03 a.m. UTC | #2 
Hi Robert,

On 03/12/2014 10:37 PM, Robert Baldyga wrote:
> This patch modifies mfd driver to use regmap for handling interrupts.
> It allows to simplify irq handling process. This modifications needed
> to make small changes in function drivers, which use interrupts.
> 
> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
> ---
>  drivers/extcon/extcon-max8997.c     |   35 ++--
>  drivers/mfd/Kconfig                 |    2 +-
>  drivers/mfd/Makefile                |    2 +-
>  drivers/mfd/max8997-irq.c           |  373 -----------------------------------
>  drivers/mfd/max8997.c               |  113 ++++++++++-
>  drivers/rtc/rtc-max8997.c           |    2 +-
>  include/linux/mfd/max8997-private.h |   65 +++++-
>  7 files changed, 183 insertions(+), 409 deletions(-)
>  delete mode 100644 drivers/mfd/max8997-irq.c
> 
> diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
> index f258c08..15fc5c0 100644
> --- a/drivers/extcon/extcon-max8997.c
> +++ b/drivers/extcon/extcon-max8997.c
> @@ -46,15 +46,15 @@ struct max8997_muic_irq {
>  };
>  
>  static struct max8997_muic_irq muic_irqs[] = {
> -	{ MAX8997_MUICIRQ_ADCError,	"muic-ADCERROR" },
> -	{ MAX8997_MUICIRQ_ADCLow,	"muic-ADCLOW" },
> -	{ MAX8997_MUICIRQ_ADC,		"muic-ADC" },
> -	{ MAX8997_MUICIRQ_VBVolt,	"muic-VBVOLT" },
> -	{ MAX8997_MUICIRQ_DBChg,	"muic-DBCHG" },
> -	{ MAX8997_MUICIRQ_DCDTmr,	"muic-DCDTMR" },
> -	{ MAX8997_MUICIRQ_ChgDetRun,	"muic-CHGDETRUN" },
> -	{ MAX8997_MUICIRQ_ChgTyp,	"muic-CHGTYP" },
> -	{ MAX8997_MUICIRQ_OVP,		"muic-OVP" },
> +	{ MAX8997_MUICIRQ_ADCERROR,	"MUIC-ADCERROR" },
> +	{ MAX8997_MUICIRQ_ADCLOW,	"MUIC-ADCLOW" },
> +	{ MAX8997_MUICIRQ_ADC,		"MUIC-ADC" },
> +	{ MAX8997_MUICIRQ_VBVOLT,	"MUIC-VBVOLT" },
> +	{ MAX8997_MUICIRQ_DBCHG,	"MUIC-DBCHG" },
> +	{ MAX8997_MUICIRQ_DCDTMR,	"MUIC-DCDTMR" },
> +	{ MAX8997_MUICIRQ_CHGDETRUN,	"MUIC-CHGDETRUN" },
> +	{ MAX8997_MUICIRQ_CHGTYP,	"MUIC-CHGTYP" },
> +	{ MAX8997_MUICIRQ_OVP,		"MUIC-OVP" },
>  };


Why did you modify interrput name? Did you have some reason?
I think this modification don't need it.

>  
>  /* Define supported cable type */
> @@ -553,17 +553,17 @@ static void max8997_muic_irq_work(struct work_struct *work)
>  	}
>  
>  	switch (irq_type) {
> -	case MAX8997_MUICIRQ_ADCError:
> -	case MAX8997_MUICIRQ_ADCLow:
> +	case MAX8997_MUICIRQ_ADCERROR:
> +	case MAX8997_MUICIRQ_ADCLOW:
>  	case MAX8997_MUICIRQ_ADC:
>  		/* Handle all of cable except for charger cable */
>  		ret = max8997_muic_adc_handler(info);
>  		break;
> -	case MAX8997_MUICIRQ_VBVolt:
> -	case MAX8997_MUICIRQ_DBChg:
> -	case MAX8997_MUICIRQ_DCDTmr:
> -	case MAX8997_MUICIRQ_ChgDetRun:
> -	case MAX8997_MUICIRQ_ChgTyp:
> +	case MAX8997_MUICIRQ_VBVOLT:
> +	case MAX8997_MUICIRQ_DBCHG:
> +	case MAX8997_MUICIRQ_DCDTMR:
> +	case MAX8997_MUICIRQ_CHGDETRUN:
> +	case MAX8997_MUICIRQ_CHGTYP:

I don't agree the modification of MUIC itnerrput.

>  		/* Handle charger cable */
>  		ret = max8997_muic_chg_handler(info);
>  		break;
> @@ -679,7 +679,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
>  		struct max8997_muic_irq *muic_irq = &muic_irqs[i];
>  		unsigned int virq = 0;
>  
> -		virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq);
> +		virq = regmap_irq_get_virq(max8997->irq_data_muic,
> +					muic_irq->irq);
>  		if (!virq) {
>  			ret = -EINVAL;
>  			goto err_irq;
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 2871a65..2273574 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -388,7 +388,7 @@ config MFD_MAX8997
>  	depends on I2C=y
>  	select MFD_CORE
>  	select REGMAP_I2C
> -	select IRQ_DOMAIN
> +	select REGMAP_IRQ
>  	help
>  	  Say yes here to add support for Maxim Semiconductor MAX8997/8966.
>  	  This is a Power Management IC with RTC, Flash, Fuel Gauge, Haptic,
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index f5a7b2c..4cec8ad 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -119,7 +119,7 @@ obj-$(CONFIG_MFD_MAX77693)	+= max77693.o max77693-irq.o
>  obj-$(CONFIG_MFD_MAX8907)	+= max8907.o
>  max8925-objs			:= max8925-core.o max8925-i2c.o
>  obj-$(CONFIG_MFD_MAX8925)	+= max8925.o
> -obj-$(CONFIG_MFD_MAX8997)	+= max8997.o max8997-irq.o
> +obj-$(CONFIG_MFD_MAX8997)	+= max8997.o
>  obj-$(CONFIG_MFD_MAX8998)	+= max8998.o max8998-irq.o
>  
>  pcf50633-objs			:= pcf50633-core.o pcf50633-irq.o
> diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
> deleted file mode 100644
> index 0e7ff39..0000000
> --- a/drivers/mfd/max8997-irq.c
> +++ /dev/null
> @@ -1,373 +0,0 @@
> -/*
> - * max8997-irq.c - Interrupt controller support for MAX8997
> - *
> - * Copyright (C) 2011 Samsung Electronics Co.Ltd
> - * MyungJoo Ham <myungjoo.ham@samsung.com>
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License as published by
> - * the Free Software Foundation; either version 2 of the License, or
> - * (at your option) any later version.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> - * GNU General Public License for more details.
> - *
> - * You should have received a copy of the GNU General Public License
> - * along with this program; if not, write to the Free Software
> - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> - *
> - * This driver is based on max8998-irq.c
> - */
> -
> -#include <linux/err.h>
> -#include <linux/irq.h>
> -#include <linux/interrupt.h>
> -#include <linux/mfd/max8997.h>
> -#include <linux/mfd/max8997-private.h>
> -#include <linux/regmap.h>
> -
> -static const u8 max8997_mask_reg[] = {
> -	[PMIC_INT1] = MAX8997_REG_INT1MSK,
> -	[PMIC_INT2] = MAX8997_REG_INT2MSK,
> -	[PMIC_INT3] = MAX8997_REG_INT3MSK,
> -	[PMIC_INT4] = MAX8997_REG_INT4MSK,
> -	[FUEL_GAUGE] = MAX8997_REG_INVALID,
> -	[MUIC_INT1] = MAX8997_MUIC_REG_INTMASK1,
> -	[MUIC_INT2] = MAX8997_MUIC_REG_INTMASK2,
> -	[MUIC_INT3] = MAX8997_MUIC_REG_INTMASK3,
> -	[GPIO_LOW] = MAX8997_REG_INVALID,
> -	[GPIO_HI] = MAX8997_REG_INVALID,
> -	[FLASH_STATUS] = MAX8997_REG_INVALID,
> -};
> -
> -struct max8997_irq_data {
> -	int mask;
> -	enum max8997_irq_source group;
> -};
> -
> -#define DECLARE_IRQ(idx, _group, _mask)		\
> -	[(idx)] = { .group = (_group), .mask = (_mask) }
> -static const struct max8997_irq_data max8997_irqs[] = {
> -	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONR,	PMIC_INT1, 1 << 0),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONF,	PMIC_INT1, 1 << 1),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_PWRON1SEC,	PMIC_INT1, 1 << 3),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONR,	PMIC_INT1, 1 << 4),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONF,	PMIC_INT1, 1 << 5),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT2,	PMIC_INT1, 1 << 6),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT1,	PMIC_INT1, 1 << 7),
> -
> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGR,	PMIC_INT2, 1 << 0),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGF,	PMIC_INT2, 1 << 1),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_MR,		PMIC_INT2, 1 << 2),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS1OK,	PMIC_INT2, 1 << 3),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS2OK,	PMIC_INT2, 1 << 4),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS3OK,	PMIC_INT2, 1 << 5),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS4OK,	PMIC_INT2, 1 << 6),
> -
> -	DECLARE_IRQ(MAX8997_PMICIRQ_CHGINS,	PMIC_INT3, 1 << 0),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRM,	PMIC_INT3, 1 << 1),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_DCINOVP,	PMIC_INT3, 1 << 2),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_TOPOFFR,	PMIC_INT3, 1 << 3),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRSTF,	PMIC_INT3, 1 << 5),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_MBCHGTMEXPD,	PMIC_INT3, 1 << 7),
> -
> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTC60S,	PMIC_INT4, 1 << 0),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA1,	PMIC_INT4, 1 << 1),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA2,	PMIC_INT4, 1 << 2),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_SMPL_INT,	PMIC_INT4, 1 << 3),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTC1S,	PMIC_INT4, 1 << 4),
> -	DECLARE_IRQ(MAX8997_PMICIRQ_WTSR,	PMIC_INT4, 1 << 5),
> -
> -	DECLARE_IRQ(MAX8997_MUICIRQ_ADCError,	MUIC_INT1, 1 << 2),
> -	DECLARE_IRQ(MAX8997_MUICIRQ_ADCLow,	MUIC_INT1, 1 << 1),
> -	DECLARE_IRQ(MAX8997_MUICIRQ_ADC,	MUIC_INT1, 1 << 0),
> -
> -	DECLARE_IRQ(MAX8997_MUICIRQ_VBVolt,	MUIC_INT2, 1 << 4),
> -	DECLARE_IRQ(MAX8997_MUICIRQ_DBChg,	MUIC_INT2, 1 << 3),
> -	DECLARE_IRQ(MAX8997_MUICIRQ_DCDTmr,	MUIC_INT2, 1 << 2),
> -	DECLARE_IRQ(MAX8997_MUICIRQ_ChgDetRun,	MUIC_INT2, 1 << 1),
> -	DECLARE_IRQ(MAX8997_MUICIRQ_ChgTyp,	MUIC_INT2, 1 << 0),
> -
> -	DECLARE_IRQ(MAX8997_MUICIRQ_OVP,	MUIC_INT3, 1 << 2),
> -};
> -
> -static void max8997_irq_lock(struct irq_data *data)
> -{
> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
> -
> -	mutex_lock(&max8997->irqlock);
> -}
> -
> -static void max8997_irq_sync_unlock(struct irq_data *data)
> -{
> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
> -	int i;
> -
> -	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
> -		struct regmap *map;
> -		u8 mask_reg = max8997_mask_reg[i];
> -
> -		if (i >= MUIC_INT1 && i <= MUIC_INT3)
> -			map = max8997->regmap_muic;
> -		else
> -			map = max8997->regmap;
> -
> -		if (mask_reg == MAX8997_REG_INVALID ||
> -				IS_ERR_OR_NULL(map))
> -			continue;
> -		max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];
> -
> -		regmap_write(map, max8997_mask_reg[i],
> -				max8997->irq_masks_cur[i]);
> -	}
> -
> -	mutex_unlock(&max8997->irqlock);
> -}
> -
> -static const inline struct max8997_irq_data *
> -irq_to_max8997_irq(struct max8997_dev *max8997, int irq)
> -{
> -	struct irq_data *data = irq_get_irq_data(irq);
> -	return &max8997_irqs[data->hwirq];
> -}
> -
> -static void max8997_irq_mask(struct irq_data *data)
> -{
> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
> -	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
> -								data->irq);
> -
> -	max8997->irq_masks_cur[irq_data->group] |= irq_data->mask;
> -}
> -
> -static void max8997_irq_unmask(struct irq_data *data)
> -{
> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
> -	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
> -								data->irq);
> -
> -	max8997->irq_masks_cur[irq_data->group] &= ~irq_data->mask;
> -}
> -
> -static struct irq_chip max8997_irq_chip = {
> -	.name			= "max8997",
> -	.irq_bus_lock		= max8997_irq_lock,
> -	.irq_bus_sync_unlock	= max8997_irq_sync_unlock,
> -	.irq_mask		= max8997_irq_mask,
> -	.irq_unmask		= max8997_irq_unmask,
> -};
> -
> -#define MAX8997_IRQSRC_PMIC		(1 << 1)
> -#define MAX8997_IRQSRC_FUELGAUGE	(1 << 2)
> -#define MAX8997_IRQSRC_MUIC		(1 << 3)
> -#define MAX8997_IRQSRC_GPIO		(1 << 4)
> -#define MAX8997_IRQSRC_FLASH		(1 << 5)
> -static irqreturn_t max8997_irq_thread(int irq, void *data)
> -{
> -	struct max8997_dev *max8997 = data;
> -	u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
> -	unsigned int irq_src;
> -	int ret;
> -	int i, cur_irq;
> -
> -	ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
> -	if (ret < 0) {
> -		dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
> -				ret);
> -		return IRQ_NONE;
> -	}
> -
> -	if (irq_src & MAX8997_IRQSRC_PMIC) {
> -		/* PMIC INT1 ~ INT4 */
> -		regmap_bulk_read(max8997->regmap, MAX8997_REG_INT1,
> -				&irq_reg[PMIC_INT1], 4);
> -	}
> -	if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
> -		/*
> -		 * TODO: FUEL GAUGE
> -		 *
> -		 * This is to be supported by Max17042 driver. When
> -		 * an interrupt incurs here, it should be relayed to a
> -		 * Max17042 device that is connected (probably by
> -		 * platform-data). However, we do not have interrupt
> -		 * handling in Max17042 driver currently. The Max17042 IRQ
> -		 * driver should be ready to be used as a stand-alone device and
> -		 * a Max8997-dependent device. Because it is not ready in
> -		 * Max17042-side and it is not too critical in operating
> -		 * Max8997, we do not implement this in initial releases.
> -		 */
> -		irq_reg[FUEL_GAUGE] = 0;
> -	}
> -	if (irq_src & MAX8997_IRQSRC_MUIC) {
> -		/* MUIC INT1 ~ INT3 */
> -		regmap_bulk_read(max8997->regmap_muic, MAX8997_MUIC_REG_INT1,
> -				&irq_reg[MUIC_INT1], 3);
> -	}
> -	if (irq_src & MAX8997_IRQSRC_GPIO) {
> -		/* GPIO Interrupt */
> -		u8 gpio_info[MAX8997_NUM_GPIO];
> -
> -		irq_reg[GPIO_LOW] = 0;
> -		irq_reg[GPIO_HI] = 0;
> -
> -		regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
> -				gpio_info, MAX8997_NUM_GPIO);
> -		for (i = 0; i < MAX8997_NUM_GPIO; i++) {
> -			bool interrupt = false;
> -
> -			switch (gpio_info[i] & MAX8997_GPIO_INT_MASK) {
> -			case MAX8997_GPIO_INT_BOTH:
> -				if (max8997->gpio_status[i] != gpio_info[i])
> -					interrupt = true;
> -				break;
> -			case MAX8997_GPIO_INT_RISE:
> -				if ((max8997->gpio_status[i] != gpio_info[i]) &&
> -				    (gpio_info[i] & MAX8997_GPIO_DATA_MASK))
> -					interrupt = true;
> -				break;
> -			case MAX8997_GPIO_INT_FALL:
> -				if ((max8997->gpio_status[i] != gpio_info[i]) &&
> -				    !(gpio_info[i] & MAX8997_GPIO_DATA_MASK))
> -					interrupt = true;
> -				break;
> -			default:
> -				break;
> -			}
> -
> -			if (interrupt) {
> -				if (i < 8)
> -					irq_reg[GPIO_LOW] |= (1 << i);
> -				else
> -					irq_reg[GPIO_HI] |= (1 << (i - 8));
> -			}
> -
> -		}
> -	}
> -	if (irq_src & MAX8997_IRQSRC_FLASH) {
> -		/* Flash Status Interrupt */
> -		unsigned int data;
> -		ret = regmap_read(max8997->regmap,
> -				MAX8997_REG_FLASHSTATUS, &data);
> -		irq_reg[FLASH_STATUS] = data;
> -	}
> -
> -	/* Apply masking */
> -	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++)
> -		irq_reg[i] &= ~max8997->irq_masks_cur[i];
> -
> -	/* Report */
> -	for (i = 0; i < MAX8997_IRQ_NR; i++) {
> -		if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) {
> -			cur_irq = irq_find_mapping(max8997->irq_domain, i);
> -			if (cur_irq)
> -				handle_nested_irq(cur_irq);
> -		}
> -	}
> -
> -	return IRQ_HANDLED;
> -}
> -
> -int max8997_irq_resume(struct max8997_dev *max8997)
> -{
> -	if (max8997->irq && max8997->irq_domain)
> -		max8997_irq_thread(0, max8997);
> -	return 0;
> -}
> -
> -static int max8997_irq_domain_map(struct irq_domain *d, unsigned int irq,
> -					irq_hw_number_t hw)
> -{
> -	struct max8997_dev *max8997 = d->host_data;
> -
> -	irq_set_chip_data(irq, max8997);
> -	irq_set_chip_and_handler(irq, &max8997_irq_chip, handle_edge_irq);
> -	irq_set_nested_thread(irq, 1);
> -#ifdef CONFIG_ARM
> -	set_irq_flags(irq, IRQF_VALID);
> -#else
> -	irq_set_noprobe(irq);
> -#endif
> -	return 0;
> -}
> -
> -static struct irq_domain_ops max8997_irq_domain_ops = {
> -	.map = max8997_irq_domain_map,
> -};
> -
> -int max8997_irq_init(struct max8997_dev *max8997)
> -{
> -	struct irq_domain *domain;
> -	int i;
> -	int ret;
> -	unsigned int val;
> -
> -	if (!max8997->irq) {
> -		dev_warn(max8997->dev, "No interrupt specified.\n");
> -		return 0;
> -	}
> -
> -	mutex_init(&max8997->irqlock);
> -
> -	/* Mask individual interrupt sources */
> -	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
> -		max8997->irq_masks_cur[i] = 0xff;
> -		max8997->irq_masks_cache[i] = 0xff;
> -
> -		if (IS_ERR_OR_NULL(max8997->regmap))
> -			continue;
> -		if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
> -			continue;
> -
> -		regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
> -	}
> -
> -	for (i = 0; i < MAX8997_NUM_GPIO; i++) {
> -		max8997->gpio_status[i] = (regmap_read(max8997->regmap,
> -						MAX8997_REG_GPIOCNTL1 + i,
> -						&val)
> -					& MAX8997_GPIO_DATA_MASK) ?
> -					true : false;
> -	}
> -
> -	domain = irq_domain_add_linear(NULL, MAX8997_IRQ_NR,
> -					&max8997_irq_domain_ops, max8997);
> -	if (!domain) {
> -		dev_err(max8997->dev, "could not create irq domain\n");
> -		return -ENODEV;
> -	}
> -	max8997->irq_domain = domain;
> -
> -	ret = request_threaded_irq(max8997->irq, NULL, max8997_irq_thread,
> -			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
> -			"max8997-irq", max8997);
> -
> -	if (ret) {
> -		dev_err(max8997->dev, "Failed to request IRQ %d: %d\n",
> -				max8997->irq, ret);
> -		return ret;
> -	}
> -
> -	if (!max8997->ono)
> -		return 0;
> -
> -	ret = request_threaded_irq(max8997->ono, NULL, max8997_irq_thread,
> -			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
> -			IRQF_ONESHOT, "max8997-ono", max8997);
> -
> -	if (ret)
> -		dev_err(max8997->dev, "Failed to request ono-IRQ %d: %d\n",
> -				max8997->ono, ret);
> -
> -	return 0;
> -}
> -
> -void max8997_irq_exit(struct max8997_dev *max8997)
> -{
> -	if (max8997->ono)
> -		free_irq(max8997->ono, max8997);
> -
> -	if (max8997->irq)
> -		free_irq(max8997->irq, max8997);
> -}
> diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
> index 782d7c9..26a360d 100644
> --- a/drivers/mfd/max8997.c
> +++ b/drivers/mfd/max8997.c
> @@ -64,6 +64,49 @@ static const struct regmap_config max8997_regmap_config = {
>  	.max_register = MAX8997_REG_PMIC_END,
>  };
>  
> +static const struct regmap_irq max8997_irqs[] = {
> +	/* PMIC_INT1 interrupts */
> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONR_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONF_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRON1SEC_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONR_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONF_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT2_MASK, },
> +	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT1_MASK, },
> +	/* PMIC_INT2 interrupts */
> +	{ .reg_offset = 1, .mask = PMIC_INT2_JIGR_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_JIGF_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_MR_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS1OK_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS2OK_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS3OK_MASK, },
> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS4OK_MASK, },
> +	/* PMIC_INT3 interrupts */
> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGINS_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRM_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_DCINOVP_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_TOPOFFR_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRSTF_MASK, },
> +	{ .reg_offset = 2, .mask = PMIC_INT3_MBCHGTMEXPD_MASK, },
> +	/* PMIC_INT4 interrupts */
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTC60S_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA1_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA2_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_SMPL_INT_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTC1S_MASK, },
> +	{ .reg_offset = 3, .mask = PMIC_INT4_WTSR_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_irq_chip = {
> +	.name			= "max8997",
> +	.status_base		= MAX8997_REG_INT1,
> +	.mask_base		= MAX8997_REG_INT1MSK,
> +	.mask_invert		= false,
> +	.num_regs		= 4,
> +	.irqs			= max8997_irqs,
> +	.num_irqs		= ARRAY_SIZE(max8997_irqs),
> +};
> +
>  static const struct regmap_config max8997_regmap_rtc_config = {
>  	.reg_bits = 8,
>  	.val_bits = 8,
> @@ -82,6 +125,31 @@ static const struct regmap_config max8997_regmap_muic_config = {
>  	.max_register = MAX8997_MUIC_REG_END,
>  };
>  
> +static const struct regmap_irq max8997_irqs_muic[] = {
> +	/* MUIC_INT1 interrupts */
> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADCLOW_MASK, },
> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADCERROR_MASK, },
> +	/* MUIC_INT2 interrupts */
> +	{ .reg_offset = 1, .mask = MUIC_INT2_CHGTYP_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_CHGDETRUN_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_DCDTMR_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_DBCHG_MASK, },
> +	{ .reg_offset = 1, .mask = MUIC_INT2_VBVOLT_MASK, },
> +	/* MUIC_INT3 interrupts */
> +	{ .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max8997_irq_chip_muic = {
> +	.name			= "max8997-muic",
> +	.status_base		= MAX8997_MUIC_REG_INT1,
> +	.mask_base		= MAX8997_MUIC_REG_INTMASK1,
> +	.mask_invert		= true,
> +	.num_regs		= 3,
> +	.irqs			= max8997_irqs_muic,
> +	.num_irqs		= ARRAY_SIZE(max8997_irqs_muic),
> +};
> +
>  /*
>   * Only the common platform data elements for max8997 are parsed here from the
>   * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
> @@ -214,9 +282,26 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>  		goto err_regmap;
>  	}
>  
> -	pm_runtime_set_active(max8997->dev);
> +	ret = regmap_add_irq_chip(max8997->regmap, max8997->irq,
> +				IRQF_ONESHOT | IRQF_SHARED |
> +				IRQF_TRIGGER_FALLING, 0,
> +				&max8997_irq_chip, &max8997->irq_data);
> +	if (ret) {
> +		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
> +		goto err_irq;
> +	}
>  
> -	max8997_irq_init(max8997);
> +	ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
> +				IRQF_ONESHOT | IRQF_SHARED |
> +				IRQF_TRIGGER_FALLING, 0,
> +				&max8997_irq_chip_muic,
> +				&max8997->irq_data_muic);
> +	if (ret) {
> +		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
> +		goto err_irq_muic;
> +	}
> +
> +	pm_runtime_set_active(max8997->dev);
>  
>  	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
>  			ARRAY_SIZE(max8997_devs),
> @@ -238,6 +323,10 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>  
>  err_mfd:
>  	mfd_remove_devices(max8997->dev);
> +err_irq_muic:
> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
> +err_irq:
> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data);
>  err_regmap:
>  	i2c_unregister_device(max8997->muic);
>  err_i2c_muic:
> @@ -252,6 +341,10 @@ static int max8997_i2c_remove(struct i2c_client *i2c)
>  	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>  
>  	mfd_remove_devices(max8997->dev);
> +
> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data);
> +
>  	i2c_unregister_device(max8997->muic);
>  	i2c_unregister_device(max8997->haptic);
>  	i2c_unregister_device(max8997->rtc);
> @@ -468,8 +561,11 @@ static int max8997_suspend(struct device *dev)
>  	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
>  	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>  
> -	if (device_may_wakeup(dev))
> -		irq_set_irq_wake(max8997->irq, 1);
> +	if (device_may_wakeup(dev)) {
> +		enable_irq_wake(max8997->irq);
> +		disable_irq(max8997->irq);
> +	}
> +
>  	return 0;
>  }
>  
> @@ -478,9 +574,12 @@ static int max8997_resume(struct device *dev)
>  	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
>  	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>  
> -	if (device_may_wakeup(dev))
> -		irq_set_irq_wake(max8997->irq, 0);
> -	return max8997_irq_resume(max8997);
> +	if (device_may_wakeup(dev)) {
> +		disable_irq_wake(max8997->irq);
> +		enable_irq(max8997->irq);
> +	}
> +
> +	return 0;
>  }
>  
>  static const struct dev_pm_ops max8997_pm = {
> diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
> index b866f7d5..22769ea 100644
> --- a/drivers/rtc/rtc-max8997.c
> +++ b/drivers/rtc/rtc-max8997.c
> @@ -494,7 +494,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> -	virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
> +	virq = regmap_irq_get_virq(max8997->irq_data, MAX8997_PMICIRQ_RTCA1);
>  	if (!virq) {
>  		dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
>  		ret = -ENXIO;
> diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
> index ea80ef8..2817fa6 100644
> --- a/include/linux/mfd/max8997-private.h
> +++ b/include/linux/mfd/max8997-private.h
> @@ -333,6 +333,48 @@ enum max8997_irq_source {
>  	MAX8997_IRQ_GROUP_NR,
>  };
>  
> +#define PMIC_INT1_PWRONR_MASK		(0x1 << 0)
> +#define PMIC_INT1_PWRONF_MASK		(0x1 << 1)
> +#define PMIC_INT1_PWRON1SEC_MASK	(0x1 << 3)
> +#define PMIC_INT1_JIGONR_MASK		(0x1 << 4)
> +#define PMIC_INT1_JIGONF_MASK		(0x1 << 5)
> +#define PMIC_INT1_LOWBAT2_MASK		(0x1 << 6)
> +#define PMIC_INT1_LOWBAT1_MASK		(0x1 << 7)
> +
> +#define PMIC_INT2_JIGR_MASK		(0x1 << 0)
> +#define PMIC_INT2_JIGF_MASK		(0x1 << 1)
> +#define PMIC_INT2_MR_MASK		(0x1 << 2)
> +#define PMIC_INT2_DVS1OK_MASK		(0x1 << 3)
> +#define PMIC_INT2_DVS2OK_MASK		(0x1 << 4)
> +#define PMIC_INT2_DVS3OK_MASK		(0x1 << 5)
> +#define PMIC_INT2_DVS4OK_MASK		(0x1 << 6)
> +
> +#define PMIC_INT3_CHGINS_MASK		(0x1 << 0)
> +#define PMIC_INT3_CHGRM_MASK		(0x1 << 1)
> +#define PMIC_INT3_DCINOVP_MASK		(0x1 << 2)
> +#define PMIC_INT3_TOPOFFR_MASK		(0x1 << 3)
> +#define PMIC_INT3_CHGRSTF_MASK		(0x1 << 5)
> +#define PMIC_INT3_MBCHGTMEXPD_MASK	(0x1 << 7)
> +
> +#define PMIC_INT4_RTC60S_MASK		(0x1 << 0)
> +#define PMIC_INT4_RTCA1_MASK		(0x1 << 1)
> +#define PMIC_INT4_RTCA2_MASK		(0x1 << 2)
> +#define PMIC_INT4_SMPL_INT_MASK		(0x1 << 3)
> +#define PMIC_INT4_RTC1S_MASK		(0x1 << 4)
> +#define PMIC_INT4_WTSR_MASK		(0x1 << 5)
> +
> +#define MUIC_INT1_ADC_MASK		(0x1 << 0)
> +#define MUIC_INT1_ADCLOW_MASK		(0x1 << 1)
> +#define MUIC_INT1_ADCERROR_MASK		(0x1 << 2)
> +
> +#define MUIC_INT2_CHGTYP_MASK		(0x1 << 0)
> +#define MUIC_INT2_CHGDETRUN_MASK	(0x1 << 1)
> +#define MUIC_INT2_DCDTMR_MASK		(0x1 << 2)
> +#define MUIC_INT2_DBCHG_MASK		(0x1 << 3)
> +#define MUIC_INT2_VBVOLT_MASK		(0x1 << 4)
> +
> +#define MUIC_INT3_OVP_MASK		(0x1 << 2)
> +
>  enum max8997_irq {
>  	MAX8997_PMICIRQ_PWRONR,
>  	MAX8997_PMICIRQ_PWRONF,
> @@ -364,19 +406,23 @@ enum max8997_irq {
>  	MAX8997_PMICIRQ_RTC1S,
>  	MAX8997_PMICIRQ_WTSR,
>  
> -	MAX8997_MUICIRQ_ADCError,
> -	MAX8997_MUICIRQ_ADCLow,
> +	MAX8997_PMICIRQ_NR,
> +};
> +
> +enum max8997_irq_muic {
>  	MAX8997_MUICIRQ_ADC,
> +	MAX8997_MUICIRQ_ADCLOW,
> +	MAX8997_MUICIRQ_ADCERROR,
>  
> -	MAX8997_MUICIRQ_VBVolt,
> -	MAX8997_MUICIRQ_DBChg,
> -	MAX8997_MUICIRQ_DCDTmr,
> -	MAX8997_MUICIRQ_ChgDetRun,
> -	MAX8997_MUICIRQ_ChgTyp,
> +	MAX8997_MUICIRQ_CHGTYP,
> +	MAX8997_MUICIRQ_CHGDETRUN,
> +	MAX8997_MUICIRQ_DCDTMR,
> +	MAX8997_MUICIRQ_DBCHG,
> +	MAX8997_MUICIRQ_VBVOLT,

ditto.
I don't understand why do you modify interrnut name/macro.

>  
>  	MAX8997_MUICIRQ_OVP,
>  
> -	MAX8997_IRQ_NR,
> +	MAX8997_MUCIRQ_NR,

ditto.

>  };
>  
>  #define MAX8997_NUM_GPIO	12
> @@ -397,9 +443,10 @@ struct max8997_dev {
>  	struct regmap *regmap_haptic;
>  	struct regmap *regmap_muic;
>  
> +	struct regmap_irq_chip_data *irq_data;
> +	struct regmap_irq_chip_data *irq_data_muic;
>  	int irq;
>  	int ono;
> -	struct irq_domain *irq_domain;
>  	struct mutex irqlock;
>  	int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
>  	int irq_masks_cache[MAX8997_IRQ_GROUP_NR];
> 

Thanks,
Chanwoo Choi
Robert Baldyga March 13, 2014, 7:46 a.m. UTC | #3 
Hi,
On 03/13/2014 03:03 AM, Chanwoo Choi wrote:
> Hi Robert,
> 
> On 03/12/2014 10:37 PM, Robert Baldyga wrote:
>> This patch modifies mfd driver to use regmap for handling interrupts.
>> It allows to simplify irq handling process. This modifications needed
>> to make small changes in function drivers, which use interrupts.
>>
>> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
>> ---
>>  drivers/extcon/extcon-max8997.c     |   35 ++--
>>  drivers/mfd/Kconfig                 |    2 +-
>>  drivers/mfd/Makefile                |    2 +-
>>  drivers/mfd/max8997-irq.c           |  373 -----------------------------------
>>  drivers/mfd/max8997.c               |  113 ++++++++++-
>>  drivers/rtc/rtc-max8997.c           |    2 +-
>>  include/linux/mfd/max8997-private.h |   65 +++++-
>>  7 files changed, 183 insertions(+), 409 deletions(-)
>>  delete mode 100644 drivers/mfd/max8997-irq.c
>>
>> diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
>> index f258c08..15fc5c0 100644
>> --- a/drivers/extcon/extcon-max8997.c
>> +++ b/drivers/extcon/extcon-max8997.c
>> @@ -46,15 +46,15 @@ struct max8997_muic_irq {
>>  };
>>  
>>  static struct max8997_muic_irq muic_irqs[] = {
>> -	{ MAX8997_MUICIRQ_ADCError,	"muic-ADCERROR" },
>> -	{ MAX8997_MUICIRQ_ADCLow,	"muic-ADCLOW" },
>> -	{ MAX8997_MUICIRQ_ADC,		"muic-ADC" },
>> -	{ MAX8997_MUICIRQ_VBVolt,	"muic-VBVOLT" },
>> -	{ MAX8997_MUICIRQ_DBChg,	"muic-DBCHG" },
>> -	{ MAX8997_MUICIRQ_DCDTmr,	"muic-DCDTMR" },
>> -	{ MAX8997_MUICIRQ_ChgDetRun,	"muic-CHGDETRUN" },
>> -	{ MAX8997_MUICIRQ_ChgTyp,	"muic-CHGTYP" },
>> -	{ MAX8997_MUICIRQ_OVP,		"muic-OVP" },
>> +	{ MAX8997_MUICIRQ_ADCERROR,	"MUIC-ADCERROR" },
>> +	{ MAX8997_MUICIRQ_ADCLOW,	"MUIC-ADCLOW" },
>> +	{ MAX8997_MUICIRQ_ADC,		"MUIC-ADC" },
>> +	{ MAX8997_MUICIRQ_VBVOLT,	"MUIC-VBVOLT" },
>> +	{ MAX8997_MUICIRQ_DBCHG,	"MUIC-DBCHG" },
>> +	{ MAX8997_MUICIRQ_DCDTMR,	"MUIC-DCDTMR" },
>> +	{ MAX8997_MUICIRQ_CHGDETRUN,	"MUIC-CHGDETRUN" },
>> +	{ MAX8997_MUICIRQ_CHGTYP,	"MUIC-CHGTYP" },
>> +	{ MAX8997_MUICIRQ_OVP,		"MUIC-OVP" },
>>  };
> 
> 
> Why did you modify interrput name? Did you have some reason?
> I think this modification don't need it.

I did it to have one naming convention in max8997-private.h file. Any
other interrupt names uses upper case, but MUIC iqr's from some reason
uses CamelCase. I think it's much better to have consistent style in
entire file.

> 
>>  
>>  /* Define supported cable type */
>> @@ -553,17 +553,17 @@ static void max8997_muic_irq_work(struct work_struct *work)
>>  	}
>>  
>>  	switch (irq_type) {
>> -	case MAX8997_MUICIRQ_ADCError:
>> -	case MAX8997_MUICIRQ_ADCLow:
>> +	case MAX8997_MUICIRQ_ADCERROR:
>> +	case MAX8997_MUICIRQ_ADCLOW:
>>  	case MAX8997_MUICIRQ_ADC:
>>  		/* Handle all of cable except for charger cable */
>>  		ret = max8997_muic_adc_handler(info);
>>  		break;
>> -	case MAX8997_MUICIRQ_VBVolt:
>> -	case MAX8997_MUICIRQ_DBChg:
>> -	case MAX8997_MUICIRQ_DCDTmr:
>> -	case MAX8997_MUICIRQ_ChgDetRun:
>> -	case MAX8997_MUICIRQ_ChgTyp:
>> +	case MAX8997_MUICIRQ_VBVOLT:
>> +	case MAX8997_MUICIRQ_DBCHG:
>> +	case MAX8997_MUICIRQ_DCDTMR:
>> +	case MAX8997_MUICIRQ_CHGDETRUN:
>> +	case MAX8997_MUICIRQ_CHGTYP:
> 
> I don't agree the modification of MUIC itnerrput.
> 
>>  		/* Handle charger cable */
>>  		ret = max8997_muic_chg_handler(info);
>>  		break;
>> @@ -679,7 +679,8 @@ static int max8997_muic_probe(struct platform_device *pdev)
>>  		struct max8997_muic_irq *muic_irq = &muic_irqs[i];
>>  		unsigned int virq = 0;
>>  
>> -		virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq);
>> +		virq = regmap_irq_get_virq(max8997->irq_data_muic,
>> +					muic_irq->irq);
>>  		if (!virq) {
>>  			ret = -EINVAL;
>>  			goto err_irq;
>> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
>> index 2871a65..2273574 100644
>> --- a/drivers/mfd/Kconfig
>> +++ b/drivers/mfd/Kconfig
>> @@ -388,7 +388,7 @@ config MFD_MAX8997
>>  	depends on I2C=y
>>  	select MFD_CORE
>>  	select REGMAP_I2C
>> -	select IRQ_DOMAIN
>> +	select REGMAP_IRQ
>>  	help
>>  	  Say yes here to add support for Maxim Semiconductor MAX8997/8966.
>>  	  This is a Power Management IC with RTC, Flash, Fuel Gauge, Haptic,
>> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
>> index f5a7b2c..4cec8ad 100644
>> --- a/drivers/mfd/Makefile
>> +++ b/drivers/mfd/Makefile
>> @@ -119,7 +119,7 @@ obj-$(CONFIG_MFD_MAX77693)	+= max77693.o max77693-irq.o
>>  obj-$(CONFIG_MFD_MAX8907)	+= max8907.o
>>  max8925-objs			:= max8925-core.o max8925-i2c.o
>>  obj-$(CONFIG_MFD_MAX8925)	+= max8925.o
>> -obj-$(CONFIG_MFD_MAX8997)	+= max8997.o max8997-irq.o
>> +obj-$(CONFIG_MFD_MAX8997)	+= max8997.o
>>  obj-$(CONFIG_MFD_MAX8998)	+= max8998.o max8998-irq.o
>>  
>>  pcf50633-objs			:= pcf50633-core.o pcf50633-irq.o
>> diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
>> deleted file mode 100644
>> index 0e7ff39..0000000
>> --- a/drivers/mfd/max8997-irq.c
>> +++ /dev/null
>> @@ -1,373 +0,0 @@
>> -/*
>> - * max8997-irq.c - Interrupt controller support for MAX8997
>> - *
>> - * Copyright (C) 2011 Samsung Electronics Co.Ltd
>> - * MyungJoo Ham <myungjoo.ham@samsung.com>
>> - *
>> - * This program is free software; you can redistribute it and/or modify
>> - * it under the terms of the GNU General Public License as published by
>> - * the Free Software Foundation; either version 2 of the License, or
>> - * (at your option) any later version.
>> - *
>> - * This program is distributed in the hope that it will be useful,
>> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> - * GNU General Public License for more details.
>> - *
>> - * You should have received a copy of the GNU General Public License
>> - * along with this program; if not, write to the Free Software
>> - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
>> - *
>> - * This driver is based on max8998-irq.c
>> - */
>> -
>> -#include <linux/err.h>
>> -#include <linux/irq.h>
>> -#include <linux/interrupt.h>
>> -#include <linux/mfd/max8997.h>
>> -#include <linux/mfd/max8997-private.h>
>> -#include <linux/regmap.h>
>> -
>> -static const u8 max8997_mask_reg[] = {
>> -	[PMIC_INT1] = MAX8997_REG_INT1MSK,
>> -	[PMIC_INT2] = MAX8997_REG_INT2MSK,
>> -	[PMIC_INT3] = MAX8997_REG_INT3MSK,
>> -	[PMIC_INT4] = MAX8997_REG_INT4MSK,
>> -	[FUEL_GAUGE] = MAX8997_REG_INVALID,
>> -	[MUIC_INT1] = MAX8997_MUIC_REG_INTMASK1,
>> -	[MUIC_INT2] = MAX8997_MUIC_REG_INTMASK2,
>> -	[MUIC_INT3] = MAX8997_MUIC_REG_INTMASK3,
>> -	[GPIO_LOW] = MAX8997_REG_INVALID,
>> -	[GPIO_HI] = MAX8997_REG_INVALID,
>> -	[FLASH_STATUS] = MAX8997_REG_INVALID,
>> -};
>> -
>> -struct max8997_irq_data {
>> -	int mask;
>> -	enum max8997_irq_source group;
>> -};
>> -
>> -#define DECLARE_IRQ(idx, _group, _mask)		\
>> -	[(idx)] = { .group = (_group), .mask = (_mask) }
>> -static const struct max8997_irq_data max8997_irqs[] = {
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONR,	PMIC_INT1, 1 << 0),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONF,	PMIC_INT1, 1 << 1),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_PWRON1SEC,	PMIC_INT1, 1 << 3),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONR,	PMIC_INT1, 1 << 4),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONF,	PMIC_INT1, 1 << 5),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT2,	PMIC_INT1, 1 << 6),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT1,	PMIC_INT1, 1 << 7),
>> -
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGR,	PMIC_INT2, 1 << 0),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_JIGF,	PMIC_INT2, 1 << 1),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_MR,		PMIC_INT2, 1 << 2),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS1OK,	PMIC_INT2, 1 << 3),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS2OK,	PMIC_INT2, 1 << 4),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS3OK,	PMIC_INT2, 1 << 5),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_DVS4OK,	PMIC_INT2, 1 << 6),
>> -
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_CHGINS,	PMIC_INT3, 1 << 0),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRM,	PMIC_INT3, 1 << 1),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_DCINOVP,	PMIC_INT3, 1 << 2),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_TOPOFFR,	PMIC_INT3, 1 << 3),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRSTF,	PMIC_INT3, 1 << 5),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_MBCHGTMEXPD,	PMIC_INT3, 1 << 7),
>> -
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTC60S,	PMIC_INT4, 1 << 0),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA1,	PMIC_INT4, 1 << 1),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA2,	PMIC_INT4, 1 << 2),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_SMPL_INT,	PMIC_INT4, 1 << 3),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_RTC1S,	PMIC_INT4, 1 << 4),
>> -	DECLARE_IRQ(MAX8997_PMICIRQ_WTSR,	PMIC_INT4, 1 << 5),
>> -
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_ADCError,	MUIC_INT1, 1 << 2),
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_ADCLow,	MUIC_INT1, 1 << 1),
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_ADC,	MUIC_INT1, 1 << 0),
>> -
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_VBVolt,	MUIC_INT2, 1 << 4),
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_DBChg,	MUIC_INT2, 1 << 3),
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_DCDTmr,	MUIC_INT2, 1 << 2),
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_ChgDetRun,	MUIC_INT2, 1 << 1),
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_ChgTyp,	MUIC_INT2, 1 << 0),
>> -
>> -	DECLARE_IRQ(MAX8997_MUICIRQ_OVP,	MUIC_INT3, 1 << 2),
>> -};
>> -
>> -static void max8997_irq_lock(struct irq_data *data)
>> -{
>> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
>> -
>> -	mutex_lock(&max8997->irqlock);
>> -}
>> -
>> -static void max8997_irq_sync_unlock(struct irq_data *data)
>> -{
>> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
>> -	int i;
>> -
>> -	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
>> -		struct regmap *map;
>> -		u8 mask_reg = max8997_mask_reg[i];
>> -
>> -		if (i >= MUIC_INT1 && i <= MUIC_INT3)
>> -			map = max8997->regmap_muic;
>> -		else
>> -			map = max8997->regmap;
>> -
>> -		if (mask_reg == MAX8997_REG_INVALID ||
>> -				IS_ERR_OR_NULL(map))
>> -			continue;
>> -		max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];
>> -
>> -		regmap_write(map, max8997_mask_reg[i],
>> -				max8997->irq_masks_cur[i]);
>> -	}
>> -
>> -	mutex_unlock(&max8997->irqlock);
>> -}
>> -
>> -static const inline struct max8997_irq_data *
>> -irq_to_max8997_irq(struct max8997_dev *max8997, int irq)
>> -{
>> -	struct irq_data *data = irq_get_irq_data(irq);
>> -	return &max8997_irqs[data->hwirq];
>> -}
>> -
>> -static void max8997_irq_mask(struct irq_data *data)
>> -{
>> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
>> -	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
>> -								data->irq);
>> -
>> -	max8997->irq_masks_cur[irq_data->group] |= irq_data->mask;
>> -}
>> -
>> -static void max8997_irq_unmask(struct irq_data *data)
>> -{
>> -	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
>> -	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
>> -								data->irq);
>> -
>> -	max8997->irq_masks_cur[irq_data->group] &= ~irq_data->mask;
>> -}
>> -
>> -static struct irq_chip max8997_irq_chip = {
>> -	.name			= "max8997",
>> -	.irq_bus_lock		= max8997_irq_lock,
>> -	.irq_bus_sync_unlock	= max8997_irq_sync_unlock,
>> -	.irq_mask		= max8997_irq_mask,
>> -	.irq_unmask		= max8997_irq_unmask,
>> -};
>> -
>> -#define MAX8997_IRQSRC_PMIC		(1 << 1)
>> -#define MAX8997_IRQSRC_FUELGAUGE	(1 << 2)
>> -#define MAX8997_IRQSRC_MUIC		(1 << 3)
>> -#define MAX8997_IRQSRC_GPIO		(1 << 4)
>> -#define MAX8997_IRQSRC_FLASH		(1 << 5)
>> -static irqreturn_t max8997_irq_thread(int irq, void *data)
>> -{
>> -	struct max8997_dev *max8997 = data;
>> -	u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
>> -	unsigned int irq_src;
>> -	int ret;
>> -	int i, cur_irq;
>> -
>> -	ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
>> -	if (ret < 0) {
>> -		dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
>> -				ret);
>> -		return IRQ_NONE;
>> -	}
>> -
>> -	if (irq_src & MAX8997_IRQSRC_PMIC) {
>> -		/* PMIC INT1 ~ INT4 */
>> -		regmap_bulk_read(max8997->regmap, MAX8997_REG_INT1,
>> -				&irq_reg[PMIC_INT1], 4);
>> -	}
>> -	if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
>> -		/*
>> -		 * TODO: FUEL GAUGE
>> -		 *
>> -		 * This is to be supported by Max17042 driver. When
>> -		 * an interrupt incurs here, it should be relayed to a
>> -		 * Max17042 device that is connected (probably by
>> -		 * platform-data). However, we do not have interrupt
>> -		 * handling in Max17042 driver currently. The Max17042 IRQ
>> -		 * driver should be ready to be used as a stand-alone device and
>> -		 * a Max8997-dependent device. Because it is not ready in
>> -		 * Max17042-side and it is not too critical in operating
>> -		 * Max8997, we do not implement this in initial releases.
>> -		 */
>> -		irq_reg[FUEL_GAUGE] = 0;
>> -	}
>> -	if (irq_src & MAX8997_IRQSRC_MUIC) {
>> -		/* MUIC INT1 ~ INT3 */
>> -		regmap_bulk_read(max8997->regmap_muic, MAX8997_MUIC_REG_INT1,
>> -				&irq_reg[MUIC_INT1], 3);
>> -	}
>> -	if (irq_src & MAX8997_IRQSRC_GPIO) {
>> -		/* GPIO Interrupt */
>> -		u8 gpio_info[MAX8997_NUM_GPIO];
>> -
>> -		irq_reg[GPIO_LOW] = 0;
>> -		irq_reg[GPIO_HI] = 0;
>> -
>> -		regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
>> -				gpio_info, MAX8997_NUM_GPIO);
>> -		for (i = 0; i < MAX8997_NUM_GPIO; i++) {
>> -			bool interrupt = false;
>> -
>> -			switch (gpio_info[i] & MAX8997_GPIO_INT_MASK) {
>> -			case MAX8997_GPIO_INT_BOTH:
>> -				if (max8997->gpio_status[i] != gpio_info[i])
>> -					interrupt = true;
>> -				break;
>> -			case MAX8997_GPIO_INT_RISE:
>> -				if ((max8997->gpio_status[i] != gpio_info[i]) &&
>> -				    (gpio_info[i] & MAX8997_GPIO_DATA_MASK))
>> -					interrupt = true;
>> -				break;
>> -			case MAX8997_GPIO_INT_FALL:
>> -				if ((max8997->gpio_status[i] != gpio_info[i]) &&
>> -				    !(gpio_info[i] & MAX8997_GPIO_DATA_MASK))
>> -					interrupt = true;
>> -				break;
>> -			default:
>> -				break;
>> -			}
>> -
>> -			if (interrupt) {
>> -				if (i < 8)
>> -					irq_reg[GPIO_LOW] |= (1 << i);
>> -				else
>> -					irq_reg[GPIO_HI] |= (1 << (i - 8));
>> -			}
>> -
>> -		}
>> -	}
>> -	if (irq_src & MAX8997_IRQSRC_FLASH) {
>> -		/* Flash Status Interrupt */
>> -		unsigned int data;
>> -		ret = regmap_read(max8997->regmap,
>> -				MAX8997_REG_FLASHSTATUS, &data);
>> -		irq_reg[FLASH_STATUS] = data;
>> -	}
>> -
>> -	/* Apply masking */
>> -	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++)
>> -		irq_reg[i] &= ~max8997->irq_masks_cur[i];
>> -
>> -	/* Report */
>> -	for (i = 0; i < MAX8997_IRQ_NR; i++) {
>> -		if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) {
>> -			cur_irq = irq_find_mapping(max8997->irq_domain, i);
>> -			if (cur_irq)
>> -				handle_nested_irq(cur_irq);
>> -		}
>> -	}
>> -
>> -	return IRQ_HANDLED;
>> -}
>> -
>> -int max8997_irq_resume(struct max8997_dev *max8997)
>> -{
>> -	if (max8997->irq && max8997->irq_domain)
>> -		max8997_irq_thread(0, max8997);
>> -	return 0;
>> -}
>> -
>> -static int max8997_irq_domain_map(struct irq_domain *d, unsigned int irq,
>> -					irq_hw_number_t hw)
>> -{
>> -	struct max8997_dev *max8997 = d->host_data;
>> -
>> -	irq_set_chip_data(irq, max8997);
>> -	irq_set_chip_and_handler(irq, &max8997_irq_chip, handle_edge_irq);
>> -	irq_set_nested_thread(irq, 1);
>> -#ifdef CONFIG_ARM
>> -	set_irq_flags(irq, IRQF_VALID);
>> -#else
>> -	irq_set_noprobe(irq);
>> -#endif
>> -	return 0;
>> -}
>> -
>> -static struct irq_domain_ops max8997_irq_domain_ops = {
>> -	.map = max8997_irq_domain_map,
>> -};
>> -
>> -int max8997_irq_init(struct max8997_dev *max8997)
>> -{
>> -	struct irq_domain *domain;
>> -	int i;
>> -	int ret;
>> -	unsigned int val;
>> -
>> -	if (!max8997->irq) {
>> -		dev_warn(max8997->dev, "No interrupt specified.\n");
>> -		return 0;
>> -	}
>> -
>> -	mutex_init(&max8997->irqlock);
>> -
>> -	/* Mask individual interrupt sources */
>> -	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
>> -		max8997->irq_masks_cur[i] = 0xff;
>> -		max8997->irq_masks_cache[i] = 0xff;
>> -
>> -		if (IS_ERR_OR_NULL(max8997->regmap))
>> -			continue;
>> -		if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
>> -			continue;
>> -
>> -		regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
>> -	}
>> -
>> -	for (i = 0; i < MAX8997_NUM_GPIO; i++) {
>> -		max8997->gpio_status[i] = (regmap_read(max8997->regmap,
>> -						MAX8997_REG_GPIOCNTL1 + i,
>> -						&val)
>> -					& MAX8997_GPIO_DATA_MASK) ?
>> -					true : false;
>> -	}
>> -
>> -	domain = irq_domain_add_linear(NULL, MAX8997_IRQ_NR,
>> -					&max8997_irq_domain_ops, max8997);
>> -	if (!domain) {
>> -		dev_err(max8997->dev, "could not create irq domain\n");
>> -		return -ENODEV;
>> -	}
>> -	max8997->irq_domain = domain;
>> -
>> -	ret = request_threaded_irq(max8997->irq, NULL, max8997_irq_thread,
>> -			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
>> -			"max8997-irq", max8997);
>> -
>> -	if (ret) {
>> -		dev_err(max8997->dev, "Failed to request IRQ %d: %d\n",
>> -				max8997->irq, ret);
>> -		return ret;
>> -	}
>> -
>> -	if (!max8997->ono)
>> -		return 0;
>> -
>> -	ret = request_threaded_irq(max8997->ono, NULL, max8997_irq_thread,
>> -			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
>> -			IRQF_ONESHOT, "max8997-ono", max8997);
>> -
>> -	if (ret)
>> -		dev_err(max8997->dev, "Failed to request ono-IRQ %d: %d\n",
>> -				max8997->ono, ret);
>> -
>> -	return 0;
>> -}
>> -
>> -void max8997_irq_exit(struct max8997_dev *max8997)
>> -{
>> -	if (max8997->ono)
>> -		free_irq(max8997->ono, max8997);
>> -
>> -	if (max8997->irq)
>> -		free_irq(max8997->irq, max8997);
>> -}
>> diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
>> index 782d7c9..26a360d 100644
>> --- a/drivers/mfd/max8997.c
>> +++ b/drivers/mfd/max8997.c
>> @@ -64,6 +64,49 @@ static const struct regmap_config max8997_regmap_config = {
>>  	.max_register = MAX8997_REG_PMIC_END,
>>  };
>>  
>> +static const struct regmap_irq max8997_irqs[] = {
>> +	/* PMIC_INT1 interrupts */
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONR_MASK, },
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONF_MASK, },
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_PWRON1SEC_MASK, },
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONR_MASK, },
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONF_MASK, },
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT2_MASK, },
>> +	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT1_MASK, },
>> +	/* PMIC_INT2 interrupts */
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_JIGR_MASK, },
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_JIGF_MASK, },
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_MR_MASK, },
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS1OK_MASK, },
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS2OK_MASK, },
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS3OK_MASK, },
>> +	{ .reg_offset = 1, .mask = PMIC_INT2_DVS4OK_MASK, },
>> +	/* PMIC_INT3 interrupts */
>> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGINS_MASK, },
>> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRM_MASK, },
>> +	{ .reg_offset = 2, .mask = PMIC_INT3_DCINOVP_MASK, },
>> +	{ .reg_offset = 2, .mask = PMIC_INT3_TOPOFFR_MASK, },
>> +	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRSTF_MASK, },
>> +	{ .reg_offset = 2, .mask = PMIC_INT3_MBCHGTMEXPD_MASK, },
>> +	/* PMIC_INT4 interrupts */
>> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTC60S_MASK, },
>> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA1_MASK, },
>> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA2_MASK, },
>> +	{ .reg_offset = 3, .mask = PMIC_INT4_SMPL_INT_MASK, },
>> +	{ .reg_offset = 3, .mask = PMIC_INT4_RTC1S_MASK, },
>> +	{ .reg_offset = 3, .mask = PMIC_INT4_WTSR_MASK, },
>> +};
>> +
>> +static const struct regmap_irq_chip max8997_irq_chip = {
>> +	.name			= "max8997",
>> +	.status_base		= MAX8997_REG_INT1,
>> +	.mask_base		= MAX8997_REG_INT1MSK,
>> +	.mask_invert		= false,
>> +	.num_regs		= 4,
>> +	.irqs			= max8997_irqs,
>> +	.num_irqs		= ARRAY_SIZE(max8997_irqs),
>> +};
>> +
>>  static const struct regmap_config max8997_regmap_rtc_config = {
>>  	.reg_bits = 8,
>>  	.val_bits = 8,
>> @@ -82,6 +125,31 @@ static const struct regmap_config max8997_regmap_muic_config = {
>>  	.max_register = MAX8997_MUIC_REG_END,
>>  };
>>  
>> +static const struct regmap_irq max8997_irqs_muic[] = {
>> +	/* MUIC_INT1 interrupts */
>> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
>> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADCLOW_MASK, },
>> +	{ .reg_offset = 0, .mask = MUIC_INT1_ADCERROR_MASK, },
>> +	/* MUIC_INT2 interrupts */
>> +	{ .reg_offset = 1, .mask = MUIC_INT2_CHGTYP_MASK, },
>> +	{ .reg_offset = 1, .mask = MUIC_INT2_CHGDETRUN_MASK, },
>> +	{ .reg_offset = 1, .mask = MUIC_INT2_DCDTMR_MASK, },
>> +	{ .reg_offset = 1, .mask = MUIC_INT2_DBCHG_MASK, },
>> +	{ .reg_offset = 1, .mask = MUIC_INT2_VBVOLT_MASK, },
>> +	/* MUIC_INT3 interrupts */
>> +	{ .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
>> +};
>> +
>> +static const struct regmap_irq_chip max8997_irq_chip_muic = {
>> +	.name			= "max8997-muic",
>> +	.status_base		= MAX8997_MUIC_REG_INT1,
>> +	.mask_base		= MAX8997_MUIC_REG_INTMASK1,
>> +	.mask_invert		= true,
>> +	.num_regs		= 3,
>> +	.irqs			= max8997_irqs_muic,
>> +	.num_irqs		= ARRAY_SIZE(max8997_irqs_muic),
>> +};
>> +
>>  /*
>>   * Only the common platform data elements for max8997 are parsed here from the
>>   * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
>> @@ -214,9 +282,26 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>>  		goto err_regmap;
>>  	}
>>  
>> -	pm_runtime_set_active(max8997->dev);
>> +	ret = regmap_add_irq_chip(max8997->regmap, max8997->irq,
>> +				IRQF_ONESHOT | IRQF_SHARED |
>> +				IRQF_TRIGGER_FALLING, 0,
>> +				&max8997_irq_chip, &max8997->irq_data);
>> +	if (ret) {
>> +		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
>> +		goto err_irq;
>> +	}
>>  
>> -	max8997_irq_init(max8997);
>> +	ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
>> +				IRQF_ONESHOT | IRQF_SHARED |
>> +				IRQF_TRIGGER_FALLING, 0,
>> +				&max8997_irq_chip_muic,
>> +				&max8997->irq_data_muic);
>> +	if (ret) {
>> +		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
>> +		goto err_irq_muic;
>> +	}
>> +
>> +	pm_runtime_set_active(max8997->dev);
>>  
>>  	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
>>  			ARRAY_SIZE(max8997_devs),
>> @@ -238,6 +323,10 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>>  
>>  err_mfd:
>>  	mfd_remove_devices(max8997->dev);
>> +err_irq_muic:
>> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
>> +err_irq:
>> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data);
>>  err_regmap:
>>  	i2c_unregister_device(max8997->muic);
>>  err_i2c_muic:
>> @@ -252,6 +341,10 @@ static int max8997_i2c_remove(struct i2c_client *i2c)
>>  	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>>  
>>  	mfd_remove_devices(max8997->dev);
>> +
>> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
>> +	regmap_del_irq_chip(max8997->irq, max8997->irq_data);
>> +
>>  	i2c_unregister_device(max8997->muic);
>>  	i2c_unregister_device(max8997->haptic);
>>  	i2c_unregister_device(max8997->rtc);
>> @@ -468,8 +561,11 @@ static int max8997_suspend(struct device *dev)
>>  	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
>>  	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>>  
>> -	if (device_may_wakeup(dev))
>> -		irq_set_irq_wake(max8997->irq, 1);
>> +	if (device_may_wakeup(dev)) {
>> +		enable_irq_wake(max8997->irq);
>> +		disable_irq(max8997->irq);
>> +	}
>> +
>>  	return 0;
>>  }
>>  
>> @@ -478,9 +574,12 @@ static int max8997_resume(struct device *dev)
>>  	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
>>  	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
>>  
>> -	if (device_may_wakeup(dev))
>> -		irq_set_irq_wake(max8997->irq, 0);
>> -	return max8997_irq_resume(max8997);
>> +	if (device_may_wakeup(dev)) {
>> +		disable_irq_wake(max8997->irq);
>> +		enable_irq(max8997->irq);
>> +	}
>> +
>> +	return 0;
>>  }
>>  
>>  static const struct dev_pm_ops max8997_pm = {
>> diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
>> index b866f7d5..22769ea 100644
>> --- a/drivers/rtc/rtc-max8997.c
>> +++ b/drivers/rtc/rtc-max8997.c
>> @@ -494,7 +494,7 @@ static int max8997_rtc_probe(struct platform_device *pdev)
>>  		return ret;
>>  	}
>>  
>> -	virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
>> +	virq = regmap_irq_get_virq(max8997->irq_data, MAX8997_PMICIRQ_RTCA1);
>>  	if (!virq) {
>>  		dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
>>  		ret = -ENXIO;
>> diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
>> index ea80ef8..2817fa6 100644
>> --- a/include/linux/mfd/max8997-private.h
>> +++ b/include/linux/mfd/max8997-private.h
>> @@ -333,6 +333,48 @@ enum max8997_irq_source {
>>  	MAX8997_IRQ_GROUP_NR,
>>  };
>>  
>> +#define PMIC_INT1_PWRONR_MASK		(0x1 << 0)
>> +#define PMIC_INT1_PWRONF_MASK		(0x1 << 1)
>> +#define PMIC_INT1_PWRON1SEC_MASK	(0x1 << 3)
>> +#define PMIC_INT1_JIGONR_MASK		(0x1 << 4)
>> +#define PMIC_INT1_JIGONF_MASK		(0x1 << 5)
>> +#define PMIC_INT1_LOWBAT2_MASK		(0x1 << 6)
>> +#define PMIC_INT1_LOWBAT1_MASK		(0x1 << 7)
>> +
>> +#define PMIC_INT2_JIGR_MASK		(0x1 << 0)
>> +#define PMIC_INT2_JIGF_MASK		(0x1 << 1)
>> +#define PMIC_INT2_MR_MASK		(0x1 << 2)
>> +#define PMIC_INT2_DVS1OK_MASK		(0x1 << 3)
>> +#define PMIC_INT2_DVS2OK_MASK		(0x1 << 4)
>> +#define PMIC_INT2_DVS3OK_MASK		(0x1 << 5)
>> +#define PMIC_INT2_DVS4OK_MASK		(0x1 << 6)
>> +
>> +#define PMIC_INT3_CHGINS_MASK		(0x1 << 0)
>> +#define PMIC_INT3_CHGRM_MASK		(0x1 << 1)
>> +#define PMIC_INT3_DCINOVP_MASK		(0x1 << 2)
>> +#define PMIC_INT3_TOPOFFR_MASK		(0x1 << 3)
>> +#define PMIC_INT3_CHGRSTF_MASK		(0x1 << 5)
>> +#define PMIC_INT3_MBCHGTMEXPD_MASK	(0x1 << 7)
>> +
>> +#define PMIC_INT4_RTC60S_MASK		(0x1 << 0)
>> +#define PMIC_INT4_RTCA1_MASK		(0x1 << 1)
>> +#define PMIC_INT4_RTCA2_MASK		(0x1 << 2)
>> +#define PMIC_INT4_SMPL_INT_MASK		(0x1 << 3)
>> +#define PMIC_INT4_RTC1S_MASK		(0x1 << 4)
>> +#define PMIC_INT4_WTSR_MASK		(0x1 << 5)
>> +
>> +#define MUIC_INT1_ADC_MASK		(0x1 << 0)
>> +#define MUIC_INT1_ADCLOW_MASK		(0x1 << 1)
>> +#define MUIC_INT1_ADCERROR_MASK		(0x1 << 2)
>> +
>> +#define MUIC_INT2_CHGTYP_MASK		(0x1 << 0)
>> +#define MUIC_INT2_CHGDETRUN_MASK	(0x1 << 1)
>> +#define MUIC_INT2_DCDTMR_MASK		(0x1 << 2)
>> +#define MUIC_INT2_DBCHG_MASK		(0x1 << 3)
>> +#define MUIC_INT2_VBVOLT_MASK		(0x1 << 4)
>> +
>> +#define MUIC_INT3_OVP_MASK		(0x1 << 2)
>> +
>>  enum max8997_irq {
>>  	MAX8997_PMICIRQ_PWRONR,
>>  	MAX8997_PMICIRQ_PWRONF,
>> @@ -364,19 +406,23 @@ enum max8997_irq {
>>  	MAX8997_PMICIRQ_RTC1S,
>>  	MAX8997_PMICIRQ_WTSR,
>>  
>> -	MAX8997_MUICIRQ_ADCError,
>> -	MAX8997_MUICIRQ_ADCLow,
>> +	MAX8997_PMICIRQ_NR,
>> +};
>> +
>> +enum max8997_irq_muic {
>>  	MAX8997_MUICIRQ_ADC,
>> +	MAX8997_MUICIRQ_ADCLOW,
>> +	MAX8997_MUICIRQ_ADCERROR,
>>  
>> -	MAX8997_MUICIRQ_VBVolt,
>> -	MAX8997_MUICIRQ_DBChg,
>> -	MAX8997_MUICIRQ_DCDTmr,
>> -	MAX8997_MUICIRQ_ChgDetRun,
>> -	MAX8997_MUICIRQ_ChgTyp,
>> +	MAX8997_MUICIRQ_CHGTYP,
>> +	MAX8997_MUICIRQ_CHGDETRUN,
>> +	MAX8997_MUICIRQ_DCDTMR,
>> +	MAX8997_MUICIRQ_DBCHG,
>> +	MAX8997_MUICIRQ_VBVOLT,
> 
> ditto.
> I don't understand why do you modify interrnut name/macro.
> 
>>  
>>  	MAX8997_MUICIRQ_OVP,
>>  
>> -	MAX8997_IRQ_NR,
>> +	MAX8997_MUCIRQ_NR,
> 
> ditto.
> 

Here I have splitted enum into few enums, each for single interrupt
source, to make it easier to use with regmap irq handling. So I changed
MAX8997_IRQ_NR name to MAX8997_MUCIRQ_NR because now it's not number of
all interrupts but number of interrupts coming form MUIC.

>>  };
>>  
>>  #define MAX8997_NUM_GPIO	12
>> @@ -397,9 +443,10 @@ struct max8997_dev {
>>  	struct regmap *regmap_haptic;
>>  	struct regmap *regmap_muic;
>>  
>> +	struct regmap_irq_chip_data *irq_data;
>> +	struct regmap_irq_chip_data *irq_data_muic;
>>  	int irq;
>>  	int ono;
>> -	struct irq_domain *irq_domain;
>>  	struct mutex irqlock;
>>  	int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
>>  	int irq_masks_cache[MAX8997_IRQ_GROUP_NR];
>>
> 

Thanks,
Robert Baldyga
Lee Jones March 13, 2014, 8 a.m. UTC | #4 
Guys, when replying please cut out all of the unnecessary text. Paging
down though unmodified/unreviewed code is tiresome.

> >> This patch modifies mfd driver to use regmap for handling interrupts.
> >> It allows to simplify irq handling process. This modifications needed
> >> to make small changes in function drivers, which use interrupts.
> >>
> >> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
> >> ---
> >>  drivers/extcon/extcon-max8997.c     |   35 ++--
> >>  drivers/mfd/Kconfig                 |    2 +-
> >>  drivers/mfd/Makefile                |    2 +-
> >>  drivers/mfd/max8997-irq.c           |  373 -----------------------------------
> >>  drivers/mfd/max8997.c               |  113 ++++++++++-
> >>  drivers/rtc/rtc-max8997.c           |    2 +-
> >>  include/linux/mfd/max8997-private.h |   65 +++++-
> >>  7 files changed, 183 insertions(+), 409 deletions(-)
> >>  delete mode 100644 drivers/mfd/max8997-irq.c
> >>
> >> diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
> >> index f258c08..15fc5c0 100644
> >> --- a/drivers/extcon/extcon-max8997.c
> >> +++ b/drivers/extcon/extcon-max8997.c
> >> @@ -46,15 +46,15 @@ struct max8997_muic_irq {
> >>  };
> >>  
> >>  static struct max8997_muic_irq muic_irqs[] = {
> >> -	{ MAX8997_MUICIRQ_ADCError,	"muic-ADCERROR" },
> >> -	{ MAX8997_MUICIRQ_ADCLow,	"muic-ADCLOW" },
> >> -	{ MAX8997_MUICIRQ_ADC,		"muic-ADC" },
> >> -	{ MAX8997_MUICIRQ_VBVolt,	"muic-VBVOLT" },
> >> -	{ MAX8997_MUICIRQ_DBChg,	"muic-DBCHG" },
> >> -	{ MAX8997_MUICIRQ_DCDTmr,	"muic-DCDTMR" },
> >> -	{ MAX8997_MUICIRQ_ChgDetRun,	"muic-CHGDETRUN" },
> >> -	{ MAX8997_MUICIRQ_ChgTyp,	"muic-CHGTYP" },
> >> -	{ MAX8997_MUICIRQ_OVP,		"muic-OVP" },
> >> +	{ MAX8997_MUICIRQ_ADCERROR,	"MUIC-ADCERROR" },
> >> +	{ MAX8997_MUICIRQ_ADCLOW,	"MUIC-ADCLOW" },
> >> +	{ MAX8997_MUICIRQ_ADC,		"MUIC-ADC" },
> >> +	{ MAX8997_MUICIRQ_VBVOLT,	"MUIC-VBVOLT" },
> >> +	{ MAX8997_MUICIRQ_DBCHG,	"MUIC-DBCHG" },
> >> +	{ MAX8997_MUICIRQ_DCDTMR,	"MUIC-DCDTMR" },
> >> +	{ MAX8997_MUICIRQ_CHGDETRUN,	"MUIC-CHGDETRUN" },
> >> +	{ MAX8997_MUICIRQ_CHGTYP,	"MUIC-CHGTYP" },
> >> +	{ MAX8997_MUICIRQ_OVP,		"MUIC-OVP" },
> >>  };
> > 
> > 
> > Why did you modify interrput name? Did you have some reason?
> > I think this modification don't need it.
> 
> I did it to have one naming convention in max8997-private.h file. Any
> other interrupt names uses upper case, but MUIC iqr's from some reason
> uses CamelCase. I think it's much better to have consistent style in
> entire file.

I agree with the modification. CamelCase #defines/enums are hard to
read and look awful.

<snip>

> >> +enum max8997_irq_muic {
> >>  	MAX8997_MUICIRQ_ADC,
> >> +	MAX8997_MUICIRQ_ADCLOW,
> >> +	MAX8997_MUICIRQ_ADCERROR,
> >>  
> >> -	MAX8997_MUICIRQ_VBVolt,
> >> -	MAX8997_MUICIRQ_DBChg,
> >> -	MAX8997_MUICIRQ_DCDTmr,
> >> -	MAX8997_MUICIRQ_ChgDetRun,
> >> -	MAX8997_MUICIRQ_ChgTyp,
> >> +	MAX8997_MUICIRQ_CHGTYP,
> >> +	MAX8997_MUICIRQ_CHGDETRUN,
> >> +	MAX8997_MUICIRQ_DCDTMR,
> >> +	MAX8997_MUICIRQ_DBCHG,
> >> +	MAX8997_MUICIRQ_VBVOLT,
> > 
> > ditto.
> > I don't understand why do you modify interrnut name/macro.

... because the old ones are ugly and hard to read.

> >>  	MAX8997_MUICIRQ_OVP,
> >>  
> >> -	MAX8997_IRQ_NR,
> >> +	MAX8997_MUCIRQ_NR,
> > 
> > ditto.
> 
> Here I have splitted enum into few enums, each for single interrupt
> source, to make it easier to use with regmap irq handling. So I changed
> MAX8997_IRQ_NR name to MAX8997_MUCIRQ_NR because now it's not number of
> all interrupts but number of interrupts coming form MUIC.

The new name is more inline with the remaining enums, thus is better.

<snip>
Chanwoo Choi March 13, 2014, 8:03 a.m. UTC | #5 
Hi Robert,

On 03/13/2014 04:46 PM, Robert Baldyga wrote:
> Hi,
> On 03/13/2014 03:03 AM, Chanwoo Choi wrote:
>> Hi Robert,
>>
>> On 03/12/2014 10:37 PM, Robert Baldyga wrote:
>>> This patch modifies mfd driver to use regmap for handling interrupts.
>>> It allows to simplify irq handling process. This modifications needed
>>> to make small changes in function drivers, which use interrupts.
>>>
>>> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
>>> ---
>>>  drivers/extcon/extcon-max8997.c     |   35 ++--
>>>  drivers/mfd/Kconfig                 |    2 +-
>>>  drivers/mfd/Makefile                |    2 +-
>>>  drivers/mfd/max8997-irq.c           |  373 -----------------------------------
>>>  drivers/mfd/max8997.c               |  113 ++++++++++-
>>>  drivers/rtc/rtc-max8997.c           |    2 +-
>>>  include/linux/mfd/max8997-private.h |   65 +++++-
>>>  7 files changed, 183 insertions(+), 409 deletions(-)
>>>  delete mode 100644 drivers/mfd/max8997-irq.c
>>>
>>> diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
>>> index f258c08..15fc5c0 100644
>>> --- a/drivers/extcon/extcon-max8997.c
>>> +++ b/drivers/extcon/extcon-max8997.c
>>> @@ -46,15 +46,15 @@ struct max8997_muic_irq {
>>>  };
>>>  
>>>  static struct max8997_muic_irq muic_irqs[] = {
>>> -	{ MAX8997_MUICIRQ_ADCError,	"muic-ADCERROR" },
>>> -	{ MAX8997_MUICIRQ_ADCLow,	"muic-ADCLOW" },
>>> -	{ MAX8997_MUICIRQ_ADC,		"muic-ADC" },
>>> -	{ MAX8997_MUICIRQ_VBVolt,	"muic-VBVOLT" },
>>> -	{ MAX8997_MUICIRQ_DBChg,	"muic-DBCHG" },
>>> -	{ MAX8997_MUICIRQ_DCDTmr,	"muic-DCDTMR" },
>>> -	{ MAX8997_MUICIRQ_ChgDetRun,	"muic-CHGDETRUN" },
>>> -	{ MAX8997_MUICIRQ_ChgTyp,	"muic-CHGTYP" },
>>> -	{ MAX8997_MUICIRQ_OVP,		"muic-OVP" },
>>> +	{ MAX8997_MUICIRQ_ADCERROR,	"MUIC-ADCERROR" },
>>> +	{ MAX8997_MUICIRQ_ADCLOW,	"MUIC-ADCLOW" },
>>> +	{ MAX8997_MUICIRQ_ADC,		"MUIC-ADC" },
>>> +	{ MAX8997_MUICIRQ_VBVOLT,	"MUIC-VBVOLT" },
>>> +	{ MAX8997_MUICIRQ_DBCHG,	"MUIC-DBCHG" },
>>> +	{ MAX8997_MUICIRQ_DCDTMR,	"MUIC-DCDTMR" },
>>> +	{ MAX8997_MUICIRQ_CHGDETRUN,	"MUIC-CHGDETRUN" },
>>> +	{ MAX8997_MUICIRQ_CHGTYP,	"MUIC-CHGTYP" },
>>> +	{ MAX8997_MUICIRQ_OVP,		"MUIC-OVP" },
>>>  };
>>
>>
>> Why did you modify interrput name? Did you have some reason?
>> I think this modification don't need it.
> 
> I did it to have one naming convention in max8997-private.h file. Any
> other interrupt names uses upper case, but MUIC iqr's from some reason
> uses CamelCase. I think it's much better to have consistent style in
> entire file.

If you want to modify interrupt name, I think you better separate patch for
this modification. This patch handle only regmap according to the title of this patch.

Thanks,
Chanwoo Choi
diff mbox

Patch

diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index f258c08..15fc5c0 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -46,15 +46,15 @@  struct max8997_muic_irq {
 };
 
 static struct max8997_muic_irq muic_irqs[] = {
-	{ MAX8997_MUICIRQ_ADCError,	"muic-ADCERROR" },
-	{ MAX8997_MUICIRQ_ADCLow,	"muic-ADCLOW" },
-	{ MAX8997_MUICIRQ_ADC,		"muic-ADC" },
-	{ MAX8997_MUICIRQ_VBVolt,	"muic-VBVOLT" },
-	{ MAX8997_MUICIRQ_DBChg,	"muic-DBCHG" },
-	{ MAX8997_MUICIRQ_DCDTmr,	"muic-DCDTMR" },
-	{ MAX8997_MUICIRQ_ChgDetRun,	"muic-CHGDETRUN" },
-	{ MAX8997_MUICIRQ_ChgTyp,	"muic-CHGTYP" },
-	{ MAX8997_MUICIRQ_OVP,		"muic-OVP" },
+	{ MAX8997_MUICIRQ_ADCERROR,	"MUIC-ADCERROR" },
+	{ MAX8997_MUICIRQ_ADCLOW,	"MUIC-ADCLOW" },
+	{ MAX8997_MUICIRQ_ADC,		"MUIC-ADC" },
+	{ MAX8997_MUICIRQ_VBVOLT,	"MUIC-VBVOLT" },
+	{ MAX8997_MUICIRQ_DBCHG,	"MUIC-DBCHG" },
+	{ MAX8997_MUICIRQ_DCDTMR,	"MUIC-DCDTMR" },
+	{ MAX8997_MUICIRQ_CHGDETRUN,	"MUIC-CHGDETRUN" },
+	{ MAX8997_MUICIRQ_CHGTYP,	"MUIC-CHGTYP" },
+	{ MAX8997_MUICIRQ_OVP,		"MUIC-OVP" },
 };
 
 /* Define supported cable type */
@@ -553,17 +553,17 @@  static void max8997_muic_irq_work(struct work_struct *work)
 	}
 
 	switch (irq_type) {
-	case MAX8997_MUICIRQ_ADCError:
-	case MAX8997_MUICIRQ_ADCLow:
+	case MAX8997_MUICIRQ_ADCERROR:
+	case MAX8997_MUICIRQ_ADCLOW:
 	case MAX8997_MUICIRQ_ADC:
 		/* Handle all of cable except for charger cable */
 		ret = max8997_muic_adc_handler(info);
 		break;
-	case MAX8997_MUICIRQ_VBVolt:
-	case MAX8997_MUICIRQ_DBChg:
-	case MAX8997_MUICIRQ_DCDTmr:
-	case MAX8997_MUICIRQ_ChgDetRun:
-	case MAX8997_MUICIRQ_ChgTyp:
+	case MAX8997_MUICIRQ_VBVOLT:
+	case MAX8997_MUICIRQ_DBCHG:
+	case MAX8997_MUICIRQ_DCDTMR:
+	case MAX8997_MUICIRQ_CHGDETRUN:
+	case MAX8997_MUICIRQ_CHGTYP:
 		/* Handle charger cable */
 		ret = max8997_muic_chg_handler(info);
 		break;
@@ -679,7 +679,8 @@  static int max8997_muic_probe(struct platform_device *pdev)
 		struct max8997_muic_irq *muic_irq = &muic_irqs[i];
 		unsigned int virq = 0;
 
-		virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq);
+		virq = regmap_irq_get_virq(max8997->irq_data_muic,
+					muic_irq->irq);
 		if (!virq) {
 			ret = -EINVAL;
 			goto err_irq;
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 2871a65..2273574 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -388,7 +388,7 @@  config MFD_MAX8997
 	depends on I2C=y
 	select MFD_CORE
 	select REGMAP_I2C
-	select IRQ_DOMAIN
+	select REGMAP_IRQ
 	help
 	  Say yes here to add support for Maxim Semiconductor MAX8997/8966.
 	  This is a Power Management IC with RTC, Flash, Fuel Gauge, Haptic,
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f5a7b2c..4cec8ad 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -119,7 +119,7 @@  obj-$(CONFIG_MFD_MAX77693)	+= max77693.o max77693-irq.o
 obj-$(CONFIG_MFD_MAX8907)	+= max8907.o
 max8925-objs			:= max8925-core.o max8925-i2c.o
 obj-$(CONFIG_MFD_MAX8925)	+= max8925.o
-obj-$(CONFIG_MFD_MAX8997)	+= max8997.o max8997-irq.o
+obj-$(CONFIG_MFD_MAX8997)	+= max8997.o
 obj-$(CONFIG_MFD_MAX8998)	+= max8998.o max8998-irq.o
 
 pcf50633-objs			:= pcf50633-core.o pcf50633-irq.o
diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
deleted file mode 100644
index 0e7ff39..0000000
--- a/drivers/mfd/max8997-irq.c
+++ /dev/null
@@ -1,373 +0,0 @@ 
-/*
- * max8997-irq.c - Interrupt controller support for MAX8997
- *
- * Copyright (C) 2011 Samsung Electronics Co.Ltd
- * MyungJoo Ham <myungjoo.ham@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * This driver is based on max8998-irq.c
- */
-
-#include <linux/err.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/mfd/max8997.h>
-#include <linux/mfd/max8997-private.h>
-#include <linux/regmap.h>
-
-static const u8 max8997_mask_reg[] = {
-	[PMIC_INT1] = MAX8997_REG_INT1MSK,
-	[PMIC_INT2] = MAX8997_REG_INT2MSK,
-	[PMIC_INT3] = MAX8997_REG_INT3MSK,
-	[PMIC_INT4] = MAX8997_REG_INT4MSK,
-	[FUEL_GAUGE] = MAX8997_REG_INVALID,
-	[MUIC_INT1] = MAX8997_MUIC_REG_INTMASK1,
-	[MUIC_INT2] = MAX8997_MUIC_REG_INTMASK2,
-	[MUIC_INT3] = MAX8997_MUIC_REG_INTMASK3,
-	[GPIO_LOW] = MAX8997_REG_INVALID,
-	[GPIO_HI] = MAX8997_REG_INVALID,
-	[FLASH_STATUS] = MAX8997_REG_INVALID,
-};
-
-struct max8997_irq_data {
-	int mask;
-	enum max8997_irq_source group;
-};
-
-#define DECLARE_IRQ(idx, _group, _mask)		\
-	[(idx)] = { .group = (_group), .mask = (_mask) }
-static const struct max8997_irq_data max8997_irqs[] = {
-	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONR,	PMIC_INT1, 1 << 0),
-	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONF,	PMIC_INT1, 1 << 1),
-	DECLARE_IRQ(MAX8997_PMICIRQ_PWRON1SEC,	PMIC_INT1, 1 << 3),
-	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONR,	PMIC_INT1, 1 << 4),
-	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONF,	PMIC_INT1, 1 << 5),
-	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT2,	PMIC_INT1, 1 << 6),
-	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT1,	PMIC_INT1, 1 << 7),
-
-	DECLARE_IRQ(MAX8997_PMICIRQ_JIGR,	PMIC_INT2, 1 << 0),
-	DECLARE_IRQ(MAX8997_PMICIRQ_JIGF,	PMIC_INT2, 1 << 1),
-	DECLARE_IRQ(MAX8997_PMICIRQ_MR,		PMIC_INT2, 1 << 2),
-	DECLARE_IRQ(MAX8997_PMICIRQ_DVS1OK,	PMIC_INT2, 1 << 3),
-	DECLARE_IRQ(MAX8997_PMICIRQ_DVS2OK,	PMIC_INT2, 1 << 4),
-	DECLARE_IRQ(MAX8997_PMICIRQ_DVS3OK,	PMIC_INT2, 1 << 5),
-	DECLARE_IRQ(MAX8997_PMICIRQ_DVS4OK,	PMIC_INT2, 1 << 6),
-
-	DECLARE_IRQ(MAX8997_PMICIRQ_CHGINS,	PMIC_INT3, 1 << 0),
-	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRM,	PMIC_INT3, 1 << 1),
-	DECLARE_IRQ(MAX8997_PMICIRQ_DCINOVP,	PMIC_INT3, 1 << 2),
-	DECLARE_IRQ(MAX8997_PMICIRQ_TOPOFFR,	PMIC_INT3, 1 << 3),
-	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRSTF,	PMIC_INT3, 1 << 5),
-	DECLARE_IRQ(MAX8997_PMICIRQ_MBCHGTMEXPD,	PMIC_INT3, 1 << 7),
-
-	DECLARE_IRQ(MAX8997_PMICIRQ_RTC60S,	PMIC_INT4, 1 << 0),
-	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA1,	PMIC_INT4, 1 << 1),
-	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA2,	PMIC_INT4, 1 << 2),
-	DECLARE_IRQ(MAX8997_PMICIRQ_SMPL_INT,	PMIC_INT4, 1 << 3),
-	DECLARE_IRQ(MAX8997_PMICIRQ_RTC1S,	PMIC_INT4, 1 << 4),
-	DECLARE_IRQ(MAX8997_PMICIRQ_WTSR,	PMIC_INT4, 1 << 5),
-
-	DECLARE_IRQ(MAX8997_MUICIRQ_ADCError,	MUIC_INT1, 1 << 2),
-	DECLARE_IRQ(MAX8997_MUICIRQ_ADCLow,	MUIC_INT1, 1 << 1),
-	DECLARE_IRQ(MAX8997_MUICIRQ_ADC,	MUIC_INT1, 1 << 0),
-
-	DECLARE_IRQ(MAX8997_MUICIRQ_VBVolt,	MUIC_INT2, 1 << 4),
-	DECLARE_IRQ(MAX8997_MUICIRQ_DBChg,	MUIC_INT2, 1 << 3),
-	DECLARE_IRQ(MAX8997_MUICIRQ_DCDTmr,	MUIC_INT2, 1 << 2),
-	DECLARE_IRQ(MAX8997_MUICIRQ_ChgDetRun,	MUIC_INT2, 1 << 1),
-	DECLARE_IRQ(MAX8997_MUICIRQ_ChgTyp,	MUIC_INT2, 1 << 0),
-
-	DECLARE_IRQ(MAX8997_MUICIRQ_OVP,	MUIC_INT3, 1 << 2),
-};
-
-static void max8997_irq_lock(struct irq_data *data)
-{
-	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
-
-	mutex_lock(&max8997->irqlock);
-}
-
-static void max8997_irq_sync_unlock(struct irq_data *data)
-{
-	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
-	int i;
-
-	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
-		struct regmap *map;
-		u8 mask_reg = max8997_mask_reg[i];
-
-		if (i >= MUIC_INT1 && i <= MUIC_INT3)
-			map = max8997->regmap_muic;
-		else
-			map = max8997->regmap;
-
-		if (mask_reg == MAX8997_REG_INVALID ||
-				IS_ERR_OR_NULL(map))
-			continue;
-		max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];
-
-		regmap_write(map, max8997_mask_reg[i],
-				max8997->irq_masks_cur[i]);
-	}
-
-	mutex_unlock(&max8997->irqlock);
-}
-
-static const inline struct max8997_irq_data *
-irq_to_max8997_irq(struct max8997_dev *max8997, int irq)
-{
-	struct irq_data *data = irq_get_irq_data(irq);
-	return &max8997_irqs[data->hwirq];
-}
-
-static void max8997_irq_mask(struct irq_data *data)
-{
-	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
-	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
-								data->irq);
-
-	max8997->irq_masks_cur[irq_data->group] |= irq_data->mask;
-}
-
-static void max8997_irq_unmask(struct irq_data *data)
-{
-	struct max8997_dev *max8997 = irq_get_chip_data(data->irq);
-	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
-								data->irq);
-
-	max8997->irq_masks_cur[irq_data->group] &= ~irq_data->mask;
-}
-
-static struct irq_chip max8997_irq_chip = {
-	.name			= "max8997",
-	.irq_bus_lock		= max8997_irq_lock,
-	.irq_bus_sync_unlock	= max8997_irq_sync_unlock,
-	.irq_mask		= max8997_irq_mask,
-	.irq_unmask		= max8997_irq_unmask,
-};
-
-#define MAX8997_IRQSRC_PMIC		(1 << 1)
-#define MAX8997_IRQSRC_FUELGAUGE	(1 << 2)
-#define MAX8997_IRQSRC_MUIC		(1 << 3)
-#define MAX8997_IRQSRC_GPIO		(1 << 4)
-#define MAX8997_IRQSRC_FLASH		(1 << 5)
-static irqreturn_t max8997_irq_thread(int irq, void *data)
-{
-	struct max8997_dev *max8997 = data;
-	u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
-	unsigned int irq_src;
-	int ret;
-	int i, cur_irq;
-
-	ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
-	if (ret < 0) {
-		dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
-				ret);
-		return IRQ_NONE;
-	}
-
-	if (irq_src & MAX8997_IRQSRC_PMIC) {
-		/* PMIC INT1 ~ INT4 */
-		regmap_bulk_read(max8997->regmap, MAX8997_REG_INT1,
-				&irq_reg[PMIC_INT1], 4);
-	}
-	if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
-		/*
-		 * TODO: FUEL GAUGE
-		 *
-		 * This is to be supported by Max17042 driver. When
-		 * an interrupt incurs here, it should be relayed to a
-		 * Max17042 device that is connected (probably by
-		 * platform-data). However, we do not have interrupt
-		 * handling in Max17042 driver currently. The Max17042 IRQ
-		 * driver should be ready to be used as a stand-alone device and
-		 * a Max8997-dependent device. Because it is not ready in
-		 * Max17042-side and it is not too critical in operating
-		 * Max8997, we do not implement this in initial releases.
-		 */
-		irq_reg[FUEL_GAUGE] = 0;
-	}
-	if (irq_src & MAX8997_IRQSRC_MUIC) {
-		/* MUIC INT1 ~ INT3 */
-		regmap_bulk_read(max8997->regmap_muic, MAX8997_MUIC_REG_INT1,
-				&irq_reg[MUIC_INT1], 3);
-	}
-	if (irq_src & MAX8997_IRQSRC_GPIO) {
-		/* GPIO Interrupt */
-		u8 gpio_info[MAX8997_NUM_GPIO];
-
-		irq_reg[GPIO_LOW] = 0;
-		irq_reg[GPIO_HI] = 0;
-
-		regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
-				gpio_info, MAX8997_NUM_GPIO);
-		for (i = 0; i < MAX8997_NUM_GPIO; i++) {
-			bool interrupt = false;
-
-			switch (gpio_info[i] & MAX8997_GPIO_INT_MASK) {
-			case MAX8997_GPIO_INT_BOTH:
-				if (max8997->gpio_status[i] != gpio_info[i])
-					interrupt = true;
-				break;
-			case MAX8997_GPIO_INT_RISE:
-				if ((max8997->gpio_status[i] != gpio_info[i]) &&
-				    (gpio_info[i] & MAX8997_GPIO_DATA_MASK))
-					interrupt = true;
-				break;
-			case MAX8997_GPIO_INT_FALL:
-				if ((max8997->gpio_status[i] != gpio_info[i]) &&
-				    !(gpio_info[i] & MAX8997_GPIO_DATA_MASK))
-					interrupt = true;
-				break;
-			default:
-				break;
-			}
-
-			if (interrupt) {
-				if (i < 8)
-					irq_reg[GPIO_LOW] |= (1 << i);
-				else
-					irq_reg[GPIO_HI] |= (1 << (i - 8));
-			}
-
-		}
-	}
-	if (irq_src & MAX8997_IRQSRC_FLASH) {
-		/* Flash Status Interrupt */
-		unsigned int data;
-		ret = regmap_read(max8997->regmap,
-				MAX8997_REG_FLASHSTATUS, &data);
-		irq_reg[FLASH_STATUS] = data;
-	}
-
-	/* Apply masking */
-	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++)
-		irq_reg[i] &= ~max8997->irq_masks_cur[i];
-
-	/* Report */
-	for (i = 0; i < MAX8997_IRQ_NR; i++) {
-		if (irq_reg[max8997_irqs[i].group] & max8997_irqs[i].mask) {
-			cur_irq = irq_find_mapping(max8997->irq_domain, i);
-			if (cur_irq)
-				handle_nested_irq(cur_irq);
-		}
-	}
-
-	return IRQ_HANDLED;
-}
-
-int max8997_irq_resume(struct max8997_dev *max8997)
-{
-	if (max8997->irq && max8997->irq_domain)
-		max8997_irq_thread(0, max8997);
-	return 0;
-}
-
-static int max8997_irq_domain_map(struct irq_domain *d, unsigned int irq,
-					irq_hw_number_t hw)
-{
-	struct max8997_dev *max8997 = d->host_data;
-
-	irq_set_chip_data(irq, max8997);
-	irq_set_chip_and_handler(irq, &max8997_irq_chip, handle_edge_irq);
-	irq_set_nested_thread(irq, 1);
-#ifdef CONFIG_ARM
-	set_irq_flags(irq, IRQF_VALID);
-#else
-	irq_set_noprobe(irq);
-#endif
-	return 0;
-}
-
-static struct irq_domain_ops max8997_irq_domain_ops = {
-	.map = max8997_irq_domain_map,
-};
-
-int max8997_irq_init(struct max8997_dev *max8997)
-{
-	struct irq_domain *domain;
-	int i;
-	int ret;
-	unsigned int val;
-
-	if (!max8997->irq) {
-		dev_warn(max8997->dev, "No interrupt specified.\n");
-		return 0;
-	}
-
-	mutex_init(&max8997->irqlock);
-
-	/* Mask individual interrupt sources */
-	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
-		max8997->irq_masks_cur[i] = 0xff;
-		max8997->irq_masks_cache[i] = 0xff;
-
-		if (IS_ERR_OR_NULL(max8997->regmap))
-			continue;
-		if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
-			continue;
-
-		regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
-	}
-
-	for (i = 0; i < MAX8997_NUM_GPIO; i++) {
-		max8997->gpio_status[i] = (regmap_read(max8997->regmap,
-						MAX8997_REG_GPIOCNTL1 + i,
-						&val)
-					& MAX8997_GPIO_DATA_MASK) ?
-					true : false;
-	}
-
-	domain = irq_domain_add_linear(NULL, MAX8997_IRQ_NR,
-					&max8997_irq_domain_ops, max8997);
-	if (!domain) {
-		dev_err(max8997->dev, "could not create irq domain\n");
-		return -ENODEV;
-	}
-	max8997->irq_domain = domain;
-
-	ret = request_threaded_irq(max8997->irq, NULL, max8997_irq_thread,
-			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-			"max8997-irq", max8997);
-
-	if (ret) {
-		dev_err(max8997->dev, "Failed to request IRQ %d: %d\n",
-				max8997->irq, ret);
-		return ret;
-	}
-
-	if (!max8997->ono)
-		return 0;
-
-	ret = request_threaded_irq(max8997->ono, NULL, max8997_irq_thread,
-			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
-			IRQF_ONESHOT, "max8997-ono", max8997);
-
-	if (ret)
-		dev_err(max8997->dev, "Failed to request ono-IRQ %d: %d\n",
-				max8997->ono, ret);
-
-	return 0;
-}
-
-void max8997_irq_exit(struct max8997_dev *max8997)
-{
-	if (max8997->ono)
-		free_irq(max8997->ono, max8997);
-
-	if (max8997->irq)
-		free_irq(max8997->irq, max8997);
-}
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index 782d7c9..26a360d 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -64,6 +64,49 @@  static const struct regmap_config max8997_regmap_config = {
 	.max_register = MAX8997_REG_PMIC_END,
 };
 
+static const struct regmap_irq max8997_irqs[] = {
+	/* PMIC_INT1 interrupts */
+	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONR_MASK, },
+	{ .reg_offset = 0, .mask = PMIC_INT1_PWRONF_MASK, },
+	{ .reg_offset = 0, .mask = PMIC_INT1_PWRON1SEC_MASK, },
+	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONR_MASK, },
+	{ .reg_offset = 0, .mask = PMIC_INT1_JIGONF_MASK, },
+	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT2_MASK, },
+	{ .reg_offset = 0, .mask = PMIC_INT1_LOWBAT1_MASK, },
+	/* PMIC_INT2 interrupts */
+	{ .reg_offset = 1, .mask = PMIC_INT2_JIGR_MASK, },
+	{ .reg_offset = 1, .mask = PMIC_INT2_JIGF_MASK, },
+	{ .reg_offset = 1, .mask = PMIC_INT2_MR_MASK, },
+	{ .reg_offset = 1, .mask = PMIC_INT2_DVS1OK_MASK, },
+	{ .reg_offset = 1, .mask = PMIC_INT2_DVS2OK_MASK, },
+	{ .reg_offset = 1, .mask = PMIC_INT2_DVS3OK_MASK, },
+	{ .reg_offset = 1, .mask = PMIC_INT2_DVS4OK_MASK, },
+	/* PMIC_INT3 interrupts */
+	{ .reg_offset = 2, .mask = PMIC_INT3_CHGINS_MASK, },
+	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRM_MASK, },
+	{ .reg_offset = 2, .mask = PMIC_INT3_DCINOVP_MASK, },
+	{ .reg_offset = 2, .mask = PMIC_INT3_TOPOFFR_MASK, },
+	{ .reg_offset = 2, .mask = PMIC_INT3_CHGRSTF_MASK, },
+	{ .reg_offset = 2, .mask = PMIC_INT3_MBCHGTMEXPD_MASK, },
+	/* PMIC_INT4 interrupts */
+	{ .reg_offset = 3, .mask = PMIC_INT4_RTC60S_MASK, },
+	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA1_MASK, },
+	{ .reg_offset = 3, .mask = PMIC_INT4_RTCA2_MASK, },
+	{ .reg_offset = 3, .mask = PMIC_INT4_SMPL_INT_MASK, },
+	{ .reg_offset = 3, .mask = PMIC_INT4_RTC1S_MASK, },
+	{ .reg_offset = 3, .mask = PMIC_INT4_WTSR_MASK, },
+};
+
+static const struct regmap_irq_chip max8997_irq_chip = {
+	.name			= "max8997",
+	.status_base		= MAX8997_REG_INT1,
+	.mask_base		= MAX8997_REG_INT1MSK,
+	.mask_invert		= false,
+	.num_regs		= 4,
+	.irqs			= max8997_irqs,
+	.num_irqs		= ARRAY_SIZE(max8997_irqs),
+};
+
 static const struct regmap_config max8997_regmap_rtc_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -82,6 +125,31 @@  static const struct regmap_config max8997_regmap_muic_config = {
 	.max_register = MAX8997_MUIC_REG_END,
 };
 
+static const struct regmap_irq max8997_irqs_muic[] = {
+	/* MUIC_INT1 interrupts */
+	{ .reg_offset = 0, .mask = MUIC_INT1_ADC_MASK, },
+	{ .reg_offset = 0, .mask = MUIC_INT1_ADCLOW_MASK, },
+	{ .reg_offset = 0, .mask = MUIC_INT1_ADCERROR_MASK, },
+	/* MUIC_INT2 interrupts */
+	{ .reg_offset = 1, .mask = MUIC_INT2_CHGTYP_MASK, },
+	{ .reg_offset = 1, .mask = MUIC_INT2_CHGDETRUN_MASK, },
+	{ .reg_offset = 1, .mask = MUIC_INT2_DCDTMR_MASK, },
+	{ .reg_offset = 1, .mask = MUIC_INT2_DBCHG_MASK, },
+	{ .reg_offset = 1, .mask = MUIC_INT2_VBVOLT_MASK, },
+	/* MUIC_INT3 interrupts */
+	{ .reg_offset = 2, .mask = MUIC_INT3_OVP_MASK, },
+};
+
+static const struct regmap_irq_chip max8997_irq_chip_muic = {
+	.name			= "max8997-muic",
+	.status_base		= MAX8997_MUIC_REG_INT1,
+	.mask_base		= MAX8997_MUIC_REG_INTMASK1,
+	.mask_invert		= true,
+	.num_regs		= 3,
+	.irqs			= max8997_irqs_muic,
+	.num_irqs		= ARRAY_SIZE(max8997_irqs_muic),
+};
+
 /*
  * Only the common platform data elements for max8997 are parsed here from the
  * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
@@ -214,9 +282,26 @@  static int max8997_i2c_probe(struct i2c_client *i2c,
 		goto err_regmap;
 	}
 
-	pm_runtime_set_active(max8997->dev);
+	ret = regmap_add_irq_chip(max8997->regmap, max8997->irq,
+				IRQF_ONESHOT | IRQF_SHARED |
+				IRQF_TRIGGER_FALLING, 0,
+				&max8997_irq_chip, &max8997->irq_data);
+	if (ret) {
+		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
+		goto err_irq;
+	}
 
-	max8997_irq_init(max8997);
+	ret = regmap_add_irq_chip(max8997->regmap_muic, max8997->irq,
+				IRQF_ONESHOT | IRQF_SHARED |
+				IRQF_TRIGGER_FALLING, 0,
+				&max8997_irq_chip_muic,
+				&max8997->irq_data_muic);
+	if (ret) {
+		dev_err(max8997->dev, "failed to add irq chip: %d\n", ret);
+		goto err_irq_muic;
+	}
+
+	pm_runtime_set_active(max8997->dev);
 
 	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
 			ARRAY_SIZE(max8997_devs),
@@ -238,6 +323,10 @@  static int max8997_i2c_probe(struct i2c_client *i2c,
 
 err_mfd:
 	mfd_remove_devices(max8997->dev);
+err_irq_muic:
+	regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
+err_irq:
+	regmap_del_irq_chip(max8997->irq, max8997->irq_data);
 err_regmap:
 	i2c_unregister_device(max8997->muic);
 err_i2c_muic:
@@ -252,6 +341,10 @@  static int max8997_i2c_remove(struct i2c_client *i2c)
 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
 
 	mfd_remove_devices(max8997->dev);
+
+	regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
+	regmap_del_irq_chip(max8997->irq, max8997->irq_data);
+
 	i2c_unregister_device(max8997->muic);
 	i2c_unregister_device(max8997->haptic);
 	i2c_unregister_device(max8997->rtc);
@@ -468,8 +561,11 @@  static int max8997_suspend(struct device *dev)
 	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
 
-	if (device_may_wakeup(dev))
-		irq_set_irq_wake(max8997->irq, 1);
+	if (device_may_wakeup(dev)) {
+		enable_irq_wake(max8997->irq);
+		disable_irq(max8997->irq);
+	}
+
 	return 0;
 }
 
@@ -478,9 +574,12 @@  static int max8997_resume(struct device *dev)
 	struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
 
-	if (device_may_wakeup(dev))
-		irq_set_irq_wake(max8997->irq, 0);
-	return max8997_irq_resume(max8997);
+	if (device_may_wakeup(dev)) {
+		disable_irq_wake(max8997->irq);
+		enable_irq(max8997->irq);
+	}
+
+	return 0;
 }
 
 static const struct dev_pm_ops max8997_pm = {
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index b866f7d5..22769ea 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -494,7 +494,7 @@  static int max8997_rtc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
+	virq = regmap_irq_get_virq(max8997->irq_data, MAX8997_PMICIRQ_RTCA1);
 	if (!virq) {
 		dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
 		ret = -ENXIO;
diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index ea80ef8..2817fa6 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -333,6 +333,48 @@  enum max8997_irq_source {
 	MAX8997_IRQ_GROUP_NR,
 };
 
+#define PMIC_INT1_PWRONR_MASK		(0x1 << 0)
+#define PMIC_INT1_PWRONF_MASK		(0x1 << 1)
+#define PMIC_INT1_PWRON1SEC_MASK	(0x1 << 3)
+#define PMIC_INT1_JIGONR_MASK		(0x1 << 4)
+#define PMIC_INT1_JIGONF_MASK		(0x1 << 5)
+#define PMIC_INT1_LOWBAT2_MASK		(0x1 << 6)
+#define PMIC_INT1_LOWBAT1_MASK		(0x1 << 7)
+
+#define PMIC_INT2_JIGR_MASK		(0x1 << 0)
+#define PMIC_INT2_JIGF_MASK		(0x1 << 1)
+#define PMIC_INT2_MR_MASK		(0x1 << 2)
+#define PMIC_INT2_DVS1OK_MASK		(0x1 << 3)
+#define PMIC_INT2_DVS2OK_MASK		(0x1 << 4)
+#define PMIC_INT2_DVS3OK_MASK		(0x1 << 5)
+#define PMIC_INT2_DVS4OK_MASK		(0x1 << 6)
+
+#define PMIC_INT3_CHGINS_MASK		(0x1 << 0)
+#define PMIC_INT3_CHGRM_MASK		(0x1 << 1)
+#define PMIC_INT3_DCINOVP_MASK		(0x1 << 2)
+#define PMIC_INT3_TOPOFFR_MASK		(0x1 << 3)
+#define PMIC_INT3_CHGRSTF_MASK		(0x1 << 5)
+#define PMIC_INT3_MBCHGTMEXPD_MASK	(0x1 << 7)
+
+#define PMIC_INT4_RTC60S_MASK		(0x1 << 0)
+#define PMIC_INT4_RTCA1_MASK		(0x1 << 1)
+#define PMIC_INT4_RTCA2_MASK		(0x1 << 2)
+#define PMIC_INT4_SMPL_INT_MASK		(0x1 << 3)
+#define PMIC_INT4_RTC1S_MASK		(0x1 << 4)
+#define PMIC_INT4_WTSR_MASK		(0x1 << 5)
+
+#define MUIC_INT1_ADC_MASK		(0x1 << 0)
+#define MUIC_INT1_ADCLOW_MASK		(0x1 << 1)
+#define MUIC_INT1_ADCERROR_MASK		(0x1 << 2)
+
+#define MUIC_INT2_CHGTYP_MASK		(0x1 << 0)
+#define MUIC_INT2_CHGDETRUN_MASK	(0x1 << 1)
+#define MUIC_INT2_DCDTMR_MASK		(0x1 << 2)
+#define MUIC_INT2_DBCHG_MASK		(0x1 << 3)
+#define MUIC_INT2_VBVOLT_MASK		(0x1 << 4)
+
+#define MUIC_INT3_OVP_MASK		(0x1 << 2)
+
 enum max8997_irq {
 	MAX8997_PMICIRQ_PWRONR,
 	MAX8997_PMICIRQ_PWRONF,
@@ -364,19 +406,23 @@  enum max8997_irq {
 	MAX8997_PMICIRQ_RTC1S,
 	MAX8997_PMICIRQ_WTSR,
 
-	MAX8997_MUICIRQ_ADCError,
-	MAX8997_MUICIRQ_ADCLow,
+	MAX8997_PMICIRQ_NR,
+};
+
+enum max8997_irq_muic {
 	MAX8997_MUICIRQ_ADC,
+	MAX8997_MUICIRQ_ADCLOW,
+	MAX8997_MUICIRQ_ADCERROR,
 
-	MAX8997_MUICIRQ_VBVolt,
-	MAX8997_MUICIRQ_DBChg,
-	MAX8997_MUICIRQ_DCDTmr,
-	MAX8997_MUICIRQ_ChgDetRun,
-	MAX8997_MUICIRQ_ChgTyp,
+	MAX8997_MUICIRQ_CHGTYP,
+	MAX8997_MUICIRQ_CHGDETRUN,
+	MAX8997_MUICIRQ_DCDTMR,
+	MAX8997_MUICIRQ_DBCHG,
+	MAX8997_MUICIRQ_VBVOLT,
 
 	MAX8997_MUICIRQ_OVP,
 
-	MAX8997_IRQ_NR,
+	MAX8997_MUCIRQ_NR,
 };
 
 #define MAX8997_NUM_GPIO	12
@@ -397,9 +443,10 @@  struct max8997_dev {
 	struct regmap *regmap_haptic;
 	struct regmap *regmap_muic;
 
+	struct regmap_irq_chip_data *irq_data;
+	struct regmap_irq_chip_data *irq_data_muic;
 	int irq;
 	int ono;
-	struct irq_domain *irq_domain;
 	struct mutex irqlock;
 	int irq_masks_cur[MAX8997_IRQ_GROUP_NR];
 	int irq_masks_cache[MAX8997_IRQ_GROUP_NR];