mfd: rn5t618: Add IRQ support (0c816045) · Commits · 戴 / test

drivers/mfd/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -1058,6 +1058,7 @@ config MFD_RN5T618
		depends on OF
		select MFD_CORE
		select REGMAP_I2C
		select REGMAP_IRQ
		help
		Say yes here to add support for the Ricoh RN5T567,
		RN5T618, RC5T619 PMIC.

drivers/mfd/rn5t618.c

+77 −1

Original line number	Diff line number	Diff line
		@@ -8,6 +8,8 @@

		#include <linux/delay.h>
		#include <linux/i2c.h>
		#include <linux/interrupt.h>
		#include <linux/irq.h>
		#include <linux/mfd/core.h>
		#include <linux/mfd/rn5t618.h>
		#include <linux/module.h>
		@@ -46,9 +48,56 @@ static const struct regmap_config rn5t618_regmap_config = {
		.cache_type = REGCACHE_RBTREE,
		};

		static const struct regmap_irq rc5t619_irqs[] = {
		REGMAP_IRQ_REG(RN5T618_IRQ_SYS, 0, BIT(0)),
		REGMAP_IRQ_REG(RN5T618_IRQ_DCDC, 0, BIT(1)),
		REGMAP_IRQ_REG(RN5T618_IRQ_RTC, 0, BIT(2)),
		REGMAP_IRQ_REG(RN5T618_IRQ_ADC, 0, BIT(3)),
		REGMAP_IRQ_REG(RN5T618_IRQ_GPIO, 0, BIT(4)),
		REGMAP_IRQ_REG(RN5T618_IRQ_CHG, 0, BIT(6)),
		};

		static const struct regmap_irq_chip rc5t619_irq_chip = {
		.name = "rc5t619",
		.irqs = rc5t619_irqs,
		.num_irqs = ARRAY_SIZE(rc5t619_irqs),
		.num_regs = 1,
		.status_base = RN5T618_INTMON,
		.mask_base = RN5T618_INTEN,
		.mask_invert = true,
		};

		static struct rn5t618 *rn5t618_pm_power_off;
		static struct notifier_block rn5t618_restart_handler;

		static int rn5t618_irq_init(struct rn5t618 *rn5t618)
		{
		const struct regmap_irq_chip *irq_chip = NULL;
		int ret;

		if (!rn5t618->irq)
		return 0;

		switch (rn5t618->variant) {
		case RC5T619:
		irq_chip = &rc5t619_irq_chip;
		break;
		default:
		dev_err(rn5t618->dev, "Currently no IRQ support for variant %d\n",
		(int)rn5t618->variant);
		return -ENOENT;
		}

		ret = devm_regmap_add_irq_chip(rn5t618->dev, rn5t618->regmap,
		rn5t618->irq,
		IRQF_TRIGGER_FALLING \| IRQF_ONESHOT,
		0, irq_chip, &rn5t618->irq_data);
		if (ret)
		dev_err(rn5t618->dev, "Failed to register IRQ chip\n");

		return ret;
		}

		static void rn5t618_trigger_poweroff_sequence(bool repower)
		{
		/* disable automatic repower-on */
		@@ -106,6 +155,8 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c,

		i2c_set_clientdata(i2c, priv);
		priv->variant = (long)of_id->data;
		priv->irq = i2c->irq;
		priv->dev = &i2c->dev;

		priv->regmap = devm_regmap_init_i2c(i2c, &rn5t618_regmap_config);
		if (IS_ERR(priv->regmap)) {
		@@ -138,7 +189,7 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c,
		return ret;
		}

		return 0;
		return rn5t618_irq_init(priv);
		}

		static int rn5t618_i2c_remove(struct i2c_client *i2c)
		@@ -155,15 +206,40 @@ static int rn5t618_i2c_remove(struct i2c_client *i2c)
		return 0;
		}

		static int __maybe_unused rn5t618_i2c_suspend(struct device *dev)
		{
		struct rn5t618 *priv = dev_get_drvdata(dev);

		if (priv->irq)
		disable_irq(priv->irq);

		return 0;
		}

		static int __maybe_unused rn5t618_i2c_resume(struct device *dev)
		{
		struct rn5t618 *priv = dev_get_drvdata(dev);

		if (priv->irq)
		enable_irq(priv->irq);

		return 0;
		}

		static const struct i2c_device_id rn5t618_i2c_id[] = {
		{ }
		};
		MODULE_DEVICE_TABLE(i2c, rn5t618_i2c_id);

		static SIMPLE_DEV_PM_OPS(rn5t618_i2c_dev_pm_ops,
		rn5t618_i2c_suspend,
		rn5t618_i2c_resume);

		static struct i2c_driver rn5t618_i2c_driver = {
		.driver = {
		.name = "rn5t618",
		.of_match_table = of_match_ptr(rn5t618_of_match),
		.pm = &rn5t618_i2c_dev_pm_ops,
		},
		.probe = rn5t618_i2c_probe,
		.remove = rn5t618_i2c_remove,

include/linux/mfd/rn5t618.h

+15 −0

Original line number	Diff line number	Diff line
		@@ -242,9 +242,24 @@ enum {
		RC5T619,
		};

		/* RN5T618 IRQ definitions */
		enum {
		RN5T618_IRQ_SYS = 0,
		RN5T618_IRQ_DCDC,
		RN5T618_IRQ_RTC,
		RN5T618_IRQ_ADC,
		RN5T618_IRQ_GPIO,
		RN5T618_IRQ_CHG,
		RN5T618_NR_IRQS,
		};

		struct rn5t618 {
		struct regmap *regmap;
		struct device *dev;
		long variant;

		int irq;
		struct regmap_irq_chip_data *irq_data;
		};

		#endif /* __LINUX_MFD_RN5T618_H */

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