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Date: Thu, 13 Mar 2014 19:45:04 +0900
From: Chanwoo Choi <cw00.choi@...sung.com>
To: Robert Baldyga <r.baldyga@...sung.com>
Cc: sameo@...ux.intel.com, lee.jones@...aro.org,
myungjoo.ham@...sung.com, dmitry.torokhov@...il.com,
cooloney@...il.com, rpurdie@...ys.net, dbaryshkov@...il.com,
dwmw2@...radead.org, lgirdwood@...il.com, broonie@...nel.org,
a.zummo@...ertech.it, paul.gortmaker@...driver.com,
linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
linux-leds@...r.kernel.org, rtc-linux@...glegroups.com,
m.szyprowski@...sung.com, k.kozlowski@...sung.com
Subject: Re: [PATCH v3 2/4] mfd: max8997: handle IRQs using regmap
Hi Robert,
On 03/13/2014 06:38 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@...sung.com>
> ---
> drivers/extcon/extcon-max8997.c | 3 +-
> drivers/mfd/Kconfig | 2 +-
> drivers/mfd/Makefile | 2 +-
> drivers/mfd/max8997-irq.c | 373 -----------------------------------
> drivers/mfd/max8997.c | 112 ++++++++++-
> drivers/rtc/rtc-max8997.c | 2 +-
> include/linux/mfd/max8997-private.h | 63 +++++-
> 7 files changed, 165 insertions(+), 392 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..5948061 100644
> --- a/drivers/extcon/extcon-max8997.c
> +++ b/drivers/extcon/extcon-max8997.c
> @@ -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@...sung.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..5a35b3f 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_regmap;
> + }
>
> - 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 +323,9 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
>
> err_mfd:
> mfd_remove_devices(max8997->dev);
> + regmap_del_irq_chip(max8997->irq, max8997->irq_data_muic);
> +err_irq_muic:
> + regmap_del_irq_chip(max8997->irq, max8997->irq_data);
> err_regmap:
> i2c_unregister_device(max8997->muic);
> err_i2c_muic:
> @@ -252,6 +340,10 @@ 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 +560,11 @@ 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);
irq_set_irq_wake() is same as enable_irq_wake().
Why is it necessary for disable_irq(max8997->irq)?
> + }
> +
> return 0;
> }
>
> @@ -478,9 +573,12 @@ 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);
ditto.
> + }
> +
> + 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..f42ea22 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_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];
>
Thanks,
Chanwoo Choi
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