Merge branches 'ib-mfd-iio-input-5.7' and 'ib-mfd-iio-rtc-5.7' into ibs-for-mfd-merged

2 files changed, 99 insertions, 11 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index daefcb6310f9..da4a9a0c5ca2 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1071,6 +1071,7 @@ 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.
diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
index ead2e79036a9..232de50562f9 100644
--- a/drivers/mfd/rn5t618.c
+++ b/drivers/mfd/rn5t618.c
@@ -8,10 +8,13 @@
 
 #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>
 #include <linux/of_device.h>
+#include <linux/platform_device.h>
 #include <linux/reboot.h>
 #include <linux/regmap.h>
 
@@ -20,6 +23,13 @@ static const struct mfd_cell rn5t618_cells[] = {
 	{ .name = "rn5t618-wdt" },
 };
 
+static const struct mfd_cell rc5t619_cells[] = {
+	{ .name = "rn5t618-adc" },
+	{ .name = "rn5t618-regulator" },
+	{ .name = "rc5t619-rtc" },
+	{ .name = "rn5t618-wdt" },
+};
+
 static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
@@ -32,6 +42,8 @@ static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
 	case RN5T618_IR_GPF:
 	case RN5T618_MON_IOIN:
 	case RN5T618_INTMON:
+	case RN5T618_RTC_CTRL1 ... RN5T618_RTC_CTRL2:
+	case RN5T618_RTC_SECONDS ... RN5T618_RTC_YEAR:
 		return true;
 	default:
 		return false;
@@ -46,9 +58,56 @@ 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 */
@@ -87,8 +146,7 @@ static const struct of_device_id rn5t618_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, rn5t618_of_match);
 
-static int rn5t618_i2c_probe(struct i2c_client *i2c,
-			     const struct i2c_device_id *id)
+static int rn5t618_i2c_probe(struct i2c_client *i2c)
 {
 	const struct of_device_id *of_id;
 	struct rn5t618 *priv;
@@ -106,6 +164,8 @@ 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)) {
@@ -114,8 +174,16 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
-	ret = devm_mfd_add_devices(&i2c->dev, -1, rn5t618_cells,
-				   ARRAY_SIZE(rn5t618_cells), NULL, 0, NULL);
+	if (priv->variant == RC5T619)
+		ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
+					   rc5t619_cells,
+					   ARRAY_SIZE(rc5t619_cells),
+					   NULL, 0, NULL);
+	else
+		ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
+					   rn5t618_cells,
+					   ARRAY_SIZE(rn5t618_cells),
+					   NULL, 0, NULL);
 	if (ret) {
 		dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret);
 		return ret;
@@ -138,7 +206,7 @@ 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)
@@ -155,19 +223,38 @@ static int rn5t618_i2c_remove(struct i2c_client *i2c)
 	return 0;
 }
 
-static const struct i2c_device_id rn5t618_i2c_id[] = {
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, rn5t618_i2c_id);
+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 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,
+	.probe_new = rn5t618_i2c_probe,
 	.remove = rn5t618_i2c_remove,
-	.id_table = rn5t618_i2c_id,
 };
 
 module_i2c_driver(rn5t618_i2c_driver);