[v5,02/10] mfd: mt6397: extract irq related code from core driver

Message ID	1566531931-9772-3-git-send-email-hsin-hsiung.wang@mediatek.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=IqAO=WT=lists.infradead.org=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A1E5B23406 From: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com> To: Lee Jones <lee.jones@linaro.org>, Rob Herring <robh+dt@kernel.org>, "Mark Brown" <broonie@kernel.org>, Matthias Brugger <matthias.bgg@gmail.com>, Alexandre Belloni <alexandre.belloni@bootlin.com> Subject: [PATCH v5 02/10] mfd: mt6397: extract irq related code from core driver Date: Fri, 23 Aug 2019 11:45:23 +0800 Message-ID: <1566531931-9772-3-git-send-email-hsin-hsiung.wang@mediatek.com> In-Reply-To: <1566531931-9772-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1566531931-9772-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines Precedence: list Cc: Mark Rutland <mark.rutland@arm.com>, Alessandro Zummo <a.zummo@towertech.it>, srv_heupstream@mediatek.com, devicetree@vger.kernel.org, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Kate Stewart <kstewart@linuxfoundation.org>, Sean Wang <sean.wang@mediatek.com>, Liam Girdwood <lgirdwood@gmail.com>, linux-kernel@vger.kernel.org, Richard Fontana <rfontana@redhat.com>, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Thomas Gleixner <tglx@linutronix.de>, Eddie Huang <eddie.huang@mediatek.com>, Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>, linux-rtc@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" <linux-mediatek-bounces@lists.infradead.org> Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org
Series	Add Support for MediaTek PMIC MT6358 \| expand [v5,00/10] Add Support for MediaTek PMIC MT6358 [v5,01/10] mfd: mt6397: clean up code [v5,02/10] mfd: mt6397: extract irq related code from core driver [v5,03/10] mfd: mt6397: modify suspend/resume behavior [v5,04/10] dt-bindings: mfd: Add compatible for the MediaTek MT6358 PMIC [v5,05/10] regulator: Add document for MT6358 regulator [v5,06/10] mfd: Add support for the MediaTek MT6358 PMIC [v5,07/10] regulator: mt6358: Add support for MT6358 regulator [v5,08/10] arm64: dts: mt6358: add PMIC MT6358 related nodes [v5,09/10] rtc: mt6397: fix alarm register overwrite [v5,10/10] rtc: mt6397: Add support for the MediaTek MT6358 RTC

On 23/08/2019 05:45, Hsin-Hsiung Wang wrote: > In order to support different types of irq design, we decide to add > separate irq drivers for different design and keep mt6397 mfd core > simple and reusable to all generations of PMICs so far. > > Acked-for-mfd-by: Lee Jones <lee.jones@linaro.org> > Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com> > --- > drivers/mfd/Makefile | 3 +- > drivers/mfd/mt6397-core.c | 146 -------------------------------- > drivers/mfd/mt6397-irq.c | 181 ++++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/mt6397/core.h | 9 ++ > 4 files changed, 192 insertions(+), 147 deletions(-) > create mode 100644 drivers/mfd/mt6397-irq.c > > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index f026ada..9a96325 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -241,7 +241,8 @@ obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o > obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o > obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o > obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o > -obj-$(CONFIG_MFD_MT6397) += mt6397-core.o > +mt6397-objs := mt6397-core.o mt6397-irq.o > +obj-$(CONFIG_MFD_MT6397) += mt6397.o > > obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o > obj-$(CONFIG_MFD_ALTERA_SYSMGR) += altera-sysmgr.o > diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c > index c070862..93c8881 100644 > --- a/drivers/mfd/mt6397-core.c > +++ b/drivers/mfd/mt6397-core.c > @@ -18,10 +18,6 @@ > #define MT6397_RTC_BASE 0xe000 > #define MT6397_RTC_SIZE 0x3e > > -#define MT6323_CHIP_ID 0x23 > -#define MT6391_CHIP_ID 0x91 > -#define MT6397_CHIP_ID 0x97 > - > static const struct resource mt6397_rtc_resources[] = { > { > .start = MT6397_RTC_BASE, > @@ -86,148 +82,6 @@ > } > }; > > -static void mt6397_irq_lock(struct irq_data *data) > -{ > - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > - > - mutex_lock(&mt6397->irqlock); > -} > - > -static void mt6397_irq_sync_unlock(struct irq_data *data) > -{ > - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > - > - regmap_write(mt6397->regmap, mt6397->int_con[0], > - mt6397->irq_masks_cur[0]); > - regmap_write(mt6397->regmap, mt6397->int_con[1], > - mt6397->irq_masks_cur[1]); > - > - mutex_unlock(&mt6397->irqlock); > -} > - > -static void mt6397_irq_disable(struct irq_data *data) > -{ > - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > - int shift = data->hwirq & 0xf; > - int reg = data->hwirq >> 4; > - > - mt6397->irq_masks_cur[reg] &= ~BIT(shift); > -} > - > -static void mt6397_irq_enable(struct irq_data *data) > -{ > - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > - int shift = data->hwirq & 0xf; > - int reg = data->hwirq >> 4; > - > - mt6397->irq_masks_cur[reg] |= BIT(shift); > -} > - > -#ifdef CONFIG_PM_SLEEP > -static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on) > -{ > - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data); > - int shift = irq_data->hwirq & 0xf; > - int reg = irq_data->hwirq >> 4; > - > - if (on) > - mt6397->wake_mask[reg] |= BIT(shift); > - else > - mt6397->wake_mask[reg] &= ~BIT(shift); > - > - return 0; > -} > -#else > -#define mt6397_irq_set_wake NULL > -#endif > - > -static struct irq_chip mt6397_irq_chip = { > - .name = "mt6397-irq", > - .irq_bus_lock = mt6397_irq_lock, > - .irq_bus_sync_unlock = mt6397_irq_sync_unlock, > - .irq_enable = mt6397_irq_enable, > - .irq_disable = mt6397_irq_disable, > - .irq_set_wake = mt6397_irq_set_wake, > -}; > - > -static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg, > - int irqbase) > -{ > - unsigned int status; > - int i, irq, ret; > - > - ret = regmap_read(mt6397->regmap, reg, &status); > - if (ret) { > - dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret); > - return; > - } > - > - for (i = 0; i < 16; i++) { > - if (status & BIT(i)) { > - irq = irq_find_mapping(mt6397->irq_domain, irqbase + i); > - if (irq) > - handle_nested_irq(irq); > - } > - } > - > - regmap_write(mt6397->regmap, reg, status); > -} > - > -static irqreturn_t mt6397_irq_thread(int irq, void *data) > -{ > - struct mt6397_chip *mt6397 = data; > - > - mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0); > - mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16); > - > - return IRQ_HANDLED; > -} > - > -static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq, > - irq_hw_number_t hw) > -{ > - struct mt6397_chip *mt6397 = d->host_data; > - > - irq_set_chip_data(irq, mt6397); > - irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq); > - irq_set_nested_thread(irq, 1); > - irq_set_noprobe(irq); > - > - return 0; > -} > - > -static const struct irq_domain_ops mt6397_irq_domain_ops = { > - .map = mt6397_irq_domain_map, > -}; > - > -static int mt6397_irq_init(struct mt6397_chip *mt6397) > -{ > - int ret; > - > - mutex_init(&mt6397->irqlock); > - > - /* Mask all interrupt sources */ > - regmap_write(mt6397->regmap, mt6397->int_con[0], 0x0); > - regmap_write(mt6397->regmap, mt6397->int_con[1], 0x0); > - > - mt6397->irq_domain = irq_domain_add_linear(mt6397->dev->of_node, > - MT6397_IRQ_NR, &mt6397_irq_domain_ops, mt6397); > - if (!mt6397->irq_domain) { > - dev_err(mt6397->dev, "could not create irq domain\n"); > - return -ENOMEM; > - } > - > - ret = devm_request_threaded_irq(mt6397->dev, mt6397->irq, NULL, > - mt6397_irq_thread, IRQF_ONESHOT, "mt6397-pmic", mt6397); > - if (ret) { > - dev_err(mt6397->dev, "failed to register irq=%d; err: %d\n", > - mt6397->irq, ret); > - return ret; > - } > - > - return 0; > -} > - > #ifdef CONFIG_PM_SLEEP > static int mt6397_irq_suspend(struct device *dev) > { > diff --git a/drivers/mfd/mt6397-irq.c b/drivers/mfd/mt6397-irq.c > new file mode 100644 > index 0000000..b2d3ce1 > --- /dev/null > +++ b/drivers/mfd/mt6397-irq.c > @@ -0,0 +1,181 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// > +// Copyright (c) 2019 MediaTek Inc. > + > +#include <linux/interrupt.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/of_device.h> > +#include <linux/of_irq.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > +#include <linux/mfd/mt6323/core.h> > +#include <linux/mfd/mt6323/registers.h> > +#include <linux/mfd/mt6397/core.h> > +#include <linux/mfd/mt6397/registers.h> > + > +static void mt6397_irq_lock(struct irq_data *data) > +{ > + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > + > + mutex_lock(&mt6397->irqlock); > +} > + > +static void mt6397_irq_sync_unlock(struct irq_data *data) > +{ > + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > + > + regmap_write(mt6397->regmap, mt6397->int_con[0], > + mt6397->irq_masks_cur[0]); > + regmap_write(mt6397->regmap, mt6397->int_con[1], > + mt6397->irq_masks_cur[1]); > + > + mutex_unlock(&mt6397->irqlock); > +} > + > +static void mt6397_irq_disable(struct irq_data *data) > +{ > + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > + int shift = data->hwirq & 0xf; > + int reg = data->hwirq >> 4; > + > + mt6397->irq_masks_cur[reg] &= ~BIT(shift); > +} > + > +static void mt6397_irq_enable(struct irq_data *data) > +{ > + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); > + int shift = data->hwirq & 0xf; > + int reg = data->hwirq >> 4; > + > + mt6397->irq_masks_cur[reg] |= BIT(shift); > +} > + > +#ifdef CONFIG_PM_SLEEP > +static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on) > +{ > + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data); > + int shift = irq_data->hwirq & 0xf; > + int reg = irq_data->hwirq >> 4; > + > + if (on) > + mt6397->wake_mask[reg] |= BIT(shift); > + else > + mt6397->wake_mask[reg] &= ~BIT(shift); > + > + return 0; > +} > +#else > +#define mt6397_irq_set_wake NULL > +#endif > + > +static struct irq_chip mt6397_irq_chip = { > + .name = "mt6397-irq", > + .irq_bus_lock = mt6397_irq_lock, > + .irq_bus_sync_unlock = mt6397_irq_sync_unlock, > + .irq_enable = mt6397_irq_enable, > + .irq_disable = mt6397_irq_disable, > + .irq_set_wake = mt6397_irq_set_wake, > +}; > + > +static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg, > + int irqbase) > +{ > + unsigned int status; > + int i, irq, ret; > + > + ret = regmap_read(mt6397->regmap, reg, &status); > + if (ret) { > + dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret); > + return; > + } > + > + for (i = 0; i < 16; i++) { > + if (status & BIT(i)) { > + irq = irq_find_mapping(mt6397->irq_domain, irqbase + i); > + if (irq) > + handle_nested_irq(irq); > + } > + } > + > + regmap_write(mt6397->regmap, reg, status); > +} > + > +static irqreturn_t mt6397_irq_thread(int irq, void *data) > +{ > + struct mt6397_chip *mt6397 = data; > + > + mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0); > + mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16); > + > + return IRQ_HANDLED; > +} > + > +static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq, > + irq_hw_number_t hw) > +{ > + struct mt6397_chip *mt6397 = d->host_data; > + > + irq_set_chip_data(irq, mt6397); > + irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq); > + irq_set_nested_thread(irq, 1); > + irq_set_noprobe(irq); > + > + return 0; > +} > + > +static const struct irq_domain_ops mt6397_irq_domain_ops = { > + .map = mt6397_irq_domain_map, > +}; > + > +int mt6397_irq_init(struct mt6397_chip *chip) > +{ > + int ret; > + > + mutex_init(&chip->irqlock); > + > + switch (chip->chip_id) { > + case MT6323_CHIP_ID: > + chip->int_con[0] = MT6323_INT_CON0; > + chip->int_con[1] = MT6323_INT_CON1; > + chip->int_status[0] = MT6323_INT_STATUS0; > + chip->int_status[1] = MT6323_INT_STATUS1; > + break; > + > + case MT6391_CHIP_ID: > + case MT6397_CHIP_ID: > + chip->int_con[0] = MT6397_INT_CON0; > + chip->int_con[1] = MT6397_INT_CON1; > + chip->int_status[0] = MT6397_INT_STATUS0; > + chip->int_status[1] = MT6397_INT_STATUS1; > + break; > + Just stumbled over this in linux-next. I personally would prefer to have two patches, one that moves the code and another one that adds the switch etc. This way it would be much easier to realize this change. Not sure if this is still possible, because it seems to be in one of Lee's repositories already. (and if Lee thinks the same as I do, of course) Regards, Matthias > + default: > + dev_err(chip->dev, "unsupported chip: 0x%x\n", chip->chip_id); > + return -ENODEV; > + } > + > + /* Mask all interrupt sources */ > + regmap_write(chip->regmap, chip->int_con[0], 0x0); > + regmap_write(chip->regmap, chip->int_con[1], 0x0); > + > + chip->irq_domain = irq_domain_add_linear(chip->dev->of_node, > + MT6397_IRQ_NR, > + &mt6397_irq_domain_ops, > + chip); > + if (!chip->irq_domain) { > + dev_err(chip->dev, "could not create irq domain\n"); > + return -ENOMEM; > + } > + > + ret = devm_request_threaded_irq(chip->dev, chip->irq, NULL, > + mt6397_irq_thread, IRQF_ONESHOT, > + "mt6397-pmic", chip); > + if (ret) { > + dev_err(chip->dev, "failed to register irq=%d; err: %d\n", > + chip->irq, ret); > + return ret; > + } > + > + return 0; > +} > diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h > index 25a95e7..9320c2a 100644 > --- a/include/linux/mfd/mt6397/core.h > +++ b/include/linux/mfd/mt6397/core.h > @@ -7,6 +7,12 @@ > #ifndef __MFD_MT6397_CORE_H__ > #define __MFD_MT6397_CORE_H__ > > +enum chip_id { > + MT6323_CHIP_ID = 0x23, > + MT6391_CHIP_ID = 0x91, > + MT6397_CHIP_ID = 0x97, > +}; > + > enum mt6397_irq_numbers { > MT6397_IRQ_SPKL_AB = 0, > MT6397_IRQ_SPKR_AB, > @@ -54,6 +60,9 @@ struct mt6397_chip { > u16 irq_masks_cache[2]; > u16 int_con[2]; > u16 int_status[2]; > + u16 chip_id; > }; > > +int mt6397_irq_init(struct mt6397_chip *chip); > + > #endif /* __MFD_MT6397_CORE_H__ */ >

diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f026ada..9a96325 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -241,7 +241,8 @@ obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o -obj-$(CONFIG_MFD_MT6397) += mt6397-core.o +mt6397-objs := mt6397-core.o mt6397-irq.o +obj-$(CONFIG_MFD_MT6397) += mt6397.o obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o obj-$(CONFIG_MFD_ALTERA_SYSMGR) += altera-sysmgr.o diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c index c070862..93c8881 100644 --- a/drivers/mfd/mt6397-core.c +++ b/drivers/mfd/mt6397-core.c @@ -18,10 +18,6 @@ #define MT6397_RTC_BASE 0xe000 #define MT6397_RTC_SIZE 0x3e -#define MT6323_CHIP_ID 0x23 -#define MT6391_CHIP_ID 0x91 -#define MT6397_CHIP_ID 0x97 - static const struct resource mt6397_rtc_resources[] = { { .start = MT6397_RTC_BASE, @@ -86,148 +82,6 @@ } }; -static void mt6397_irq_lock(struct irq_data *data) -{ - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); - - mutex_lock(&mt6397->irqlock); -} - -static void mt6397_irq_sync_unlock(struct irq_data *data) -{ - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); - - regmap_write(mt6397->regmap, mt6397->int_con[0], - mt6397->irq_masks_cur[0]); - regmap_write(mt6397->regmap, mt6397->int_con[1], - mt6397->irq_masks_cur[1]); - - mutex_unlock(&mt6397->irqlock); -} - -static void mt6397_irq_disable(struct irq_data *data) -{ - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); - int shift = data->hwirq & 0xf; - int reg = data->hwirq >> 4; - - mt6397->irq_masks_cur[reg] &= ~BIT(shift); -} - -static void mt6397_irq_enable(struct irq_data *data) -{ - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); - int shift = data->hwirq & 0xf; - int reg = data->hwirq >> 4; - - mt6397->irq_masks_cur[reg] |= BIT(shift); -} - -#ifdef CONFIG_PM_SLEEP -static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on) -{ - struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data); - int shift = irq_data->hwirq & 0xf; - int reg = irq_data->hwirq >> 4; - - if (on) - mt6397->wake_mask[reg] |= BIT(shift); - else - mt6397->wake_mask[reg] &= ~BIT(shift); - - return 0; -} -#else -#define mt6397_irq_set_wake NULL -#endif - -static struct irq_chip mt6397_irq_chip = { - .name = "mt6397-irq", - .irq_bus_lock = mt6397_irq_lock, - .irq_bus_sync_unlock = mt6397_irq_sync_unlock, - .irq_enable = mt6397_irq_enable, - .irq_disable = mt6397_irq_disable, - .irq_set_wake = mt6397_irq_set_wake, -}; - -static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg, - int irqbase) -{ - unsigned int status; - int i, irq, ret; - - ret = regmap_read(mt6397->regmap, reg, &status); - if (ret) { - dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret); - return; - } - - for (i = 0; i < 16; i++) { - if (status & BIT(i)) { - irq = irq_find_mapping(mt6397->irq_domain, irqbase + i); - if (irq) - handle_nested_irq(irq); - } - } - - regmap_write(mt6397->regmap, reg, status); -} - -static irqreturn_t mt6397_irq_thread(int irq, void *data) -{ - struct mt6397_chip *mt6397 = data; - - mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0); - mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16); - - return IRQ_HANDLED; -} - -static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hw) -{ - struct mt6397_chip *mt6397 = d->host_data; - - irq_set_chip_data(irq, mt6397); - irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq); - irq_set_nested_thread(irq, 1); - irq_set_noprobe(irq); - - return 0; -} - -static const struct irq_domain_ops mt6397_irq_domain_ops = { - .map = mt6397_irq_domain_map, -}; - -static int mt6397_irq_init(struct mt6397_chip *mt6397) -{ - int ret; - - mutex_init(&mt6397->irqlock); - - /* Mask all interrupt sources */ - regmap_write(mt6397->regmap, mt6397->int_con[0], 0x0); - regmap_write(mt6397->regmap, mt6397->int_con[1], 0x0); - - mt6397->irq_domain = irq_domain_add_linear(mt6397->dev->of_node, - MT6397_IRQ_NR, &mt6397_irq_domain_ops, mt6397); - if (!mt6397->irq_domain) { - dev_err(mt6397->dev, "could not create irq domain\n"); - return -ENOMEM; - } - - ret = devm_request_threaded_irq(mt6397->dev, mt6397->irq, NULL, - mt6397_irq_thread, IRQF_ONESHOT, "mt6397-pmic", mt6397); - if (ret) { - dev_err(mt6397->dev, "failed to register irq=%d; err: %d\n", - mt6397->irq, ret); - return ret; - } - - return 0; -} - #ifdef CONFIG_PM_SLEEP static int mt6397_irq_suspend(struct device *dev) { diff --git a/drivers/mfd/mt6397-irq.c b/drivers/mfd/mt6397-irq.c new file mode 100644 index 0000000..b2d3ce1 --- /dev/null +++ b/drivers/mfd/mt6397-irq.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2019 MediaTek Inc. + +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/mfd/mt6323/core.h> +#include <linux/mfd/mt6323/registers.h> +#include <linux/mfd/mt6397/core.h> +#include <linux/mfd/mt6397/registers.h> + +static void mt6397_irq_lock(struct irq_data *data) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); + + mutex_lock(&mt6397->irqlock); +} + +static void mt6397_irq_sync_unlock(struct irq_data *data) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); + + regmap_write(mt6397->regmap, mt6397->int_con[0], + mt6397->irq_masks_cur[0]); + regmap_write(mt6397->regmap, mt6397->int_con[1], + mt6397->irq_masks_cur[1]); + + mutex_unlock(&mt6397->irqlock); +} + +static void mt6397_irq_disable(struct irq_data *data) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); + int shift = data->hwirq & 0xf; + int reg = data->hwirq >> 4; + + mt6397->irq_masks_cur[reg] &= ~BIT(shift); +} + +static void mt6397_irq_enable(struct irq_data *data) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data); + int shift = data->hwirq & 0xf; + int reg = data->hwirq >> 4; + + mt6397->irq_masks_cur[reg] |= BIT(shift); +} + +#ifdef CONFIG_PM_SLEEP +static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data); + int shift = irq_data->hwirq & 0xf; + int reg = irq_data->hwirq >> 4; + + if (on) + mt6397->wake_mask[reg] |= BIT(shift); + else + mt6397->wake_mask[reg] &= ~BIT(shift); + + return 0; +} +#else +#define mt6397_irq_set_wake NULL +#endif + +static struct irq_chip mt6397_irq_chip = { + .name = "mt6397-irq", + .irq_bus_lock = mt6397_irq_lock, + .irq_bus_sync_unlock = mt6397_irq_sync_unlock, + .irq_enable = mt6397_irq_enable, + .irq_disable = mt6397_irq_disable, + .irq_set_wake = mt6397_irq_set_wake, +}; + +static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg, + int irqbase) +{ + unsigned int status; + int i, irq, ret; + + ret = regmap_read(mt6397->regmap, reg, &status); + if (ret) { + dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret); + return; + } + + for (i = 0; i < 16; i++) { + if (status & BIT(i)) { + irq = irq_find_mapping(mt6397->irq_domain, irqbase + i); + if (irq) + handle_nested_irq(irq); + } + } + + regmap_write(mt6397->regmap, reg, status); +} + +static irqreturn_t mt6397_irq_thread(int irq, void *data) +{ + struct mt6397_chip *mt6397 = data; + + mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0); + mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16); + + return IRQ_HANDLED; +} + +static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) +{ + struct mt6397_chip *mt6397 = d->host_data; + + irq_set_chip_data(irq, mt6397); + irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq); + irq_set_nested_thread(irq, 1); + irq_set_noprobe(irq); + + return 0; +} + +static const struct irq_domain_ops mt6397_irq_domain_ops = { + .map = mt6397_irq_domain_map, +}; + +int mt6397_irq_init(struct mt6397_chip *chip) +{ + int ret; + + mutex_init(&chip->irqlock); + + switch (chip->chip_id) { + case MT6323_CHIP_ID: + chip->int_con[0] = MT6323_INT_CON0; + chip->int_con[1] = MT6323_INT_CON1; + chip->int_status[0] = MT6323_INT_STATUS0; + chip->int_status[1] = MT6323_INT_STATUS1; + break; + + case MT6391_CHIP_ID: + case MT6397_CHIP_ID: + chip->int_con[0] = MT6397_INT_CON0; + chip->int_con[1] = MT6397_INT_CON1; + chip->int_status[0] = MT6397_INT_STATUS0; + chip->int_status[1] = MT6397_INT_STATUS1; + break; + + default: + dev_err(chip->dev, "unsupported chip: 0x%x\n", chip->chip_id); + return -ENODEV; + } + + /* Mask all interrupt sources */ + regmap_write(chip->regmap, chip->int_con[0], 0x0); + regmap_write(chip->regmap, chip->int_con[1], 0x0); + + chip->irq_domain = irq_domain_add_linear(chip->dev->of_node, + MT6397_IRQ_NR, + &mt6397_irq_domain_ops, + chip); + if (!chip->irq_domain) { + dev_err(chip->dev, "could not create irq domain\n"); + return -ENOMEM; + } + + ret = devm_request_threaded_irq(chip->dev, chip->irq, NULL, + mt6397_irq_thread, IRQF_ONESHOT, + "mt6397-pmic", chip); + if (ret) { + dev_err(chip->dev, "failed to register irq=%d; err: %d\n", + chip->irq, ret); + return ret; + } + + return 0; +} diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h index 25a95e7..9320c2a 100644 --- a/include/linux/mfd/mt6397/core.h +++ b/include/linux/mfd/mt6397/core.h @@ -7,6 +7,12 @@ #ifndef __MFD_MT6397_CORE_H__ #define __MFD_MT6397_CORE_H__ +enum chip_id { + MT6323_CHIP_ID = 0x23, + MT6391_CHIP_ID = 0x91, + MT6397_CHIP_ID = 0x97, +}; + enum mt6397_irq_numbers { MT6397_IRQ_SPKL_AB = 0, MT6397_IRQ_SPKR_AB, @@ -54,6 +60,9 @@ struct mt6397_chip { u16 irq_masks_cache[2]; u16 int_con[2]; u16 int_status[2]; + u16 chip_id; }; +int mt6397_irq_init(struct mt6397_chip *chip); + #endif /* __MFD_MT6397_CORE_H__ */

[v5,02/10] mfd: mt6397: extract irq related code from core driver

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