Merge remote-tracking branches 'regulator/topic/da9210',...

Merge remote-tracking branches 'regulator/topic/da9210', 'regulator/topic/da9211', 'regulator/topic/fan53555', 'regulator/topic/isl9305' and 'regulator/topic/list' into regulator-next

Documentation/devicetree/bindings/regulator/da9210.txt

@@ -5,6 +5,10 @@ Required properties:
 - compatible:	must be "dlg,da9210"
 - reg:		the i2c slave address of the regulator. It should be 0x68.
 
+Optional properties:
+
+- interrupts:	a reference to the DA9210 interrupt, if available.
+
 Any standard regulator properties can be used to configure the single da9210
 DCDC.
 

Documentation/devicetree/bindings/regulator/da9211.txt

-* Dialog Semiconductor DA9211/DA9213 Voltage Regulator
+* Dialog Semiconductor DA9211/DA9213/DA9215 Voltage Regulator
 
 Required properties:
-- compatible: "dlg,da9211" or "dlg,da9213".
+- compatible: "dlg,da9211" or "dlg,da9213" or "dlg,da9215"
 - reg: I2C slave address, usually 0x68.
 - interrupts: the interrupt outputs of the controller
 - regulators: A node that houses a sub-node for each regulator within the
@@ -66,3 +66,31 @@ Example 2) DA9213
 			};
 		};
 	};
+
+
+Example 3) DA9215
+	pmic: da9215@68 {
+		compatible = "dlg,da9215";
+		reg = <0x68>;
+		interrupts = <3 27>;
+
+		regulators {
+			BUCKA {
+				regulator-name = "VBUCKA";
+				regulator-min-microvolt = < 300000>;
+				regulator-max-microvolt = <1570000>;
+				regulator-min-microamp 	= <4000000>;
+				regulator-max-microamp 	= <7000000>;
+				enable-gpios = <&gpio 27 0>;
+			};
+			BUCKB {
+				regulator-name = "VBUCKB";
+				regulator-min-microvolt = < 300000>;
+				regulator-max-microvolt = <1570000>;
+				regulator-min-microamp 	= <4000000>;
+				regulator-max-microamp 	= <7000000>;
+				enable-gpios = <&gpio 17 0>;
+			};
+		};
+	};
+

drivers/regulator/Kconfig

@@ -209,13 +209,13 @@ config REGULATOR_DA9210
 	  interface.
 
 config REGULATOR_DA9211
-	tristate "Dialog Semiconductor DA9211/DA9212/DA9213/DA9214 regulator"
+	tristate "Dialog Semiconductor DA9211/DA9212/DA9213/DA9214/DA9215 regulator"
 	depends on I2C
 	select REGMAP_I2C
 	help
 	  Say y here to support for the Dialog Semiconductor DA9211/DA9212
-	  /DA9213/DA9214.
-	  The DA9211/DA9212/DA9213/DA9214 is a multi-phase synchronous
+	  /DA9213/DA9214/DA9215.
+	  The DA9211/DA9212/DA9213/DA9214/DA9215 is a multi-phase synchronous
 	  step down converter 12A or 16A DC-DC Buck controlled through an I2C
 	  interface.
 

drivers/regulator/core.c

@@ -111,6 +111,11 @@ static struct regulator *create_regulator(struct regulator_dev *rdev,
 					  const char *supply_name);
 static void _regulator_put(struct regulator *regulator);
 
+static struct regulator_dev *dev_to_rdev(struct device *dev)
+{
+	return container_of(dev, struct regulator_dev, dev);
+}
+
 static const char *rdev_get_name(struct regulator_dev *rdev)
 {
 	if (rdev->constraints && rdev->constraints->name)
@@ -1612,14 +1617,15 @@ static void _regulator_put(struct regulator *regulator)
 	if (regulator->dev)
 		sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);
 	mutex_lock(&rdev->mutex);
-	kfree(regulator->supply_name);
 	list_del(&regulator->list);
-	kfree(regulator);
 
 	rdev->open_count--;
 	rdev->exclusive = 0;
 	mutex_unlock(&rdev->mutex);
 
+	kfree(regulator->supply_name);
+	kfree(regulator);
+
 	module_put(rdev->owner);
 }
 
@@ -3608,6 +3614,9 @@ static const struct attribute_group *regulator_dev_groups[] = {
 static void regulator_dev_release(struct device *dev)
 {
 	struct regulator_dev *rdev = dev_get_drvdata(dev);
+
+	kfree(rdev->constraints);
+	of_node_put(rdev->dev.of_node);
 	kfree(rdev);
 }
 
@@ -3839,9 +3848,7 @@ void regulator_unregister(struct regulator_dev *rdev)
 	unset_regulator_supplies(rdev);
 	list_del(&rdev->list);
 	mutex_unlock(&regulator_list_mutex);
-	kfree(rdev->constraints);
 	regulator_ena_gpio_free(rdev);
-	of_node_put(rdev->dev.of_node);
 	device_unregister(&rdev->dev);
 }
 EXPORT_SYMBOL_GPL(regulator_unregister);
@@ -4161,13 +4168,57 @@ static int __init regulator_init(void)
 /* init early to allow our consumers to complete system booting */
 core_initcall(regulator_init);
 
-static int __init regulator_init_complete(void)
+static int __init regulator_late_cleanup(struct device *dev, void *data)
 {
-	struct regulator_dev *rdev;
-	const struct regulator_ops *ops;
-	struct regulation_constraints *c;
+	struct regulator_dev *rdev = dev_to_rdev(dev);
+	const struct regulator_ops *ops = rdev->desc->ops;
+	struct regulation_constraints *c = rdev->constraints;
 	int enabled, ret;
 
+	if (c && c->always_on)
+		return 0;
+
+	if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS))
+		return 0;
+
+	mutex_lock(&rdev->mutex);
+
+	if (rdev->use_count)
+		goto unlock;
+
+	/* If we can't read the status assume it's on. */
+	if (ops->is_enabled)
+		enabled = ops->is_enabled(rdev);
+	else
+		enabled = 1;
+
+	if (!enabled)
+		goto unlock;
+
+	if (have_full_constraints()) {
+		/* We log since this may kill the system if it goes
+		 * wrong. */
+		rdev_info(rdev, "disabling\n");
+		ret = _regulator_do_disable(rdev);
+		if (ret != 0)
+			rdev_err(rdev, "couldn't disable: %d\n", ret);
+	} else {
+		/* The intention is that in future we will
+		 * assume that full constraints are provided
+		 * so warn even if we aren't going to do
+		 * anything here.
+		 */
+		rdev_warn(rdev, "incomplete constraints, leaving on\n");
+	}
+
+unlock:
+	mutex_unlock(&rdev->mutex);
+
+	return 0;
+}
+
+static int __init regulator_init_complete(void)
+{
 	/*
 	 * Since DT doesn't provide an idiomatic mechanism for
 	 * enabling full constraints and since it's much more natural
@@ -4177,58 +4228,13 @@ static int __init regulator_init_complete(void)
 	if (of_have_populated_dt())
 		has_full_constraints = true;
 
-	mutex_lock(&regulator_list_mutex);
-
 	/* If we have a full configuration then disable any regulators
 	 * we have permission to change the status for and which are
 	 * not in use or always_on.  This is effectively the default
 	 * for DT and ACPI as they have full constraints.
 	 */
-	list_for_each_entry(rdev, &regulator_list, list) {
-		ops = rdev->desc->ops;
-		c = rdev->constraints;
-
-		if (c && c->always_on)
-			continue;
-
-		if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS))
-			continue;
-
-		mutex_lock(&rdev->mutex);
-
-		if (rdev->use_count)
-			goto unlock;
-
-		/* If we can't read the status assume it's on. */
-		if (ops->is_enabled)
-			enabled = ops->is_enabled(rdev);
-		else
-			enabled = 1;
-
-		if (!enabled)
-			goto unlock;
-
-		if (have_full_constraints()) {
-			/* We log since this may kill the system if it
-			 * goes wrong. */
-			rdev_info(rdev, "disabling\n");
-			ret = _regulator_do_disable(rdev);
-			if (ret != 0)
-				rdev_err(rdev, "couldn't disable: %d\n", ret);
-		} else {
-			/* The intention is that in future we will
-			 * assume that full constraints are provided
-			 * so warn even if we aren't going to do
-			 * anything here.
-			 */
-			rdev_warn(rdev, "incomplete constraints, leaving on\n");
-		}
-
-unlock:
-		mutex_unlock(&rdev->mutex);
-	}
-
-	mutex_unlock(&regulator_list_mutex);
+	class_for_each_device(&regulator_class, NULL, NULL,
+			      regulator_late_cleanup);
 
 	return 0;
 }

drivers/regulator/da9210-regulator.c

@@ -22,6 +22,8 @@
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/slab.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
@@ -120,6 +122,55 @@ static int da9210_get_current_limit(struct regulator_dev *rdev)
 	return da9210_buck_limits[sel];
 }
 
+static irqreturn_t da9210_irq_handler(int irq, void *data)
+{
+	struct da9210 *chip = data;
+	unsigned int val, handled = 0;
+	int error, ret = IRQ_NONE;
+
+	error = regmap_read(chip->regmap, DA9210_REG_EVENT_B, &val);
+	if (error < 0)
+		goto error_i2c;
+
+	if (val & DA9210_E_OVCURR) {
+		regulator_notifier_call_chain(chip->rdev,
+					      REGULATOR_EVENT_OVER_CURRENT,
+					      NULL);
+		handled |= DA9210_E_OVCURR;
+	}
+	if (val & DA9210_E_NPWRGOOD) {
+		regulator_notifier_call_chain(chip->rdev,
+					      REGULATOR_EVENT_UNDER_VOLTAGE,
+					      NULL);
+		handled |= DA9210_E_NPWRGOOD;
+	}
+	if (val & (DA9210_E_TEMP_WARN | DA9210_E_TEMP_CRIT)) {
+		regulator_notifier_call_chain(chip->rdev,
+					      REGULATOR_EVENT_OVER_TEMP, NULL);
+		handled |= val & (DA9210_E_TEMP_WARN | DA9210_E_TEMP_CRIT);
+	}
+	if (val & DA9210_E_VMAX) {
+		regulator_notifier_call_chain(chip->rdev,
+					      REGULATOR_EVENT_REGULATION_OUT,
+					      NULL);
+		handled |= DA9210_E_VMAX;
+	}
+	if (handled) {
+		/* Clear handled events */
+		error = regmap_write(chip->regmap, DA9210_REG_EVENT_B, handled);
+		if (error < 0)
+			goto error_i2c;
+
+		ret = IRQ_HANDLED;
+	}
+
+	return ret;
+
+error_i2c:
+	dev_err(regmap_get_device(chip->regmap), "I2C error : %d\n", error);
+	return ret;
+}
+
 /*
  * I2C driver interface functions
  */
@@ -168,6 +219,30 @@ static int da9210_i2c_probe(struct i2c_client *i2c,
 	}
 
 	chip->rdev = rdev;
+	if (i2c->irq) {
+		error = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
+						  da9210_irq_handler,
+						  IRQF_TRIGGER_LOW |
+						  IRQF_ONESHOT | IRQF_SHARED,
+						  "da9210", chip);
+		if (error) {
+			dev_err(&i2c->dev, "Failed to request IRQ%u: %d\n",
+				i2c->irq, error);
+			return error;
+		}
+
+		error = regmap_update_bits(chip->regmap, DA9210_REG_MASK_B,
+					 DA9210_M_OVCURR | DA9210_M_NPWRGOOD |
+					 DA9210_M_TEMP_WARN |
+					 DA9210_M_TEMP_CRIT | DA9210_M_VMAX, 0);
+		if (error < 0) {
+			dev_err(&i2c->dev, "Failed to update mask reg: %d\n",
+				error);
+			return error;
+		}
+	} else {
+		dev_warn(&i2c->dev, "No IRQ configured\n");
+	}
 
 	i2c_set_clientdata(i2c, chip);
 

drivers/regulator/da9211-regulator.c

 /*
- * da9211-regulator.c - Regulator device driver for DA9211/DA9213
- * Copyright (C) 2014  Dialog Semiconductor Ltd.
+ * da9211-regulator.c - Regulator device driver for DA9211/DA9213/DA9215
+ * Copyright (C) 2015  Dialog Semiconductor Ltd.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -32,6 +32,7 @@
 /* DEVICE IDs */
 #define DA9211_DEVICE_ID	0x22
 #define DA9213_DEVICE_ID	0x23
+#define DA9215_DEVICE_ID	0x24
 
 #define DA9211_BUCK_MODE_SLEEP	1
 #define DA9211_BUCK_MODE_SYNC	2
@@ -90,6 +91,13 @@ static const int da9213_current_limits[] = {
 	3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
 	4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
 };
+/* Current limits for DA9215 buck (uA) indices
+ * corresponds with register values
+ */
+static const int da9215_current_limits[] = {
+	4000000, 4200000, 4400000, 4600000, 4800000, 5000000, 5200000, 5400000,
+	5600000, 5800000, 6000000, 6200000, 6400000, 6600000, 6800000, 7000000
+};
 
 static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev)
 {
@@ -157,6 +165,10 @@ static int da9211_set_current_limit(struct regulator_dev *rdev, int min,
 		current_limits = da9213_current_limits;
 		max_size = ARRAY_SIZE(da9213_current_limits)-1;
 		break;
+	case DA9215:
+		current_limits = da9215_current_limits;
+		max_size = ARRAY_SIZE(da9215_current_limits)-1;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -189,6 +201,9 @@ static int da9211_get_current_limit(struct regulator_dev *rdev)
 	case DA9213:
 		current_limits = da9213_current_limits;
 		break;
+	case DA9215:
+		current_limits = da9215_current_limits;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -350,13 +365,11 @@ static int da9211_regulator_init(struct da9211 *chip)
 	/* If configuration for 1/2 bucks is different between platform data
 	 * and the register, driver should exit.
 	 */
-	if ((chip->pdata->num_buck == 2 && data == 0x40)
-		|| (chip->pdata->num_buck == 1 && data == 0x00)) {
-		if (data == 0)
-			chip->num_regulator = 1;
-		else
-			chip->num_regulator = 2;
-	} else {
+	if (chip->pdata->num_buck == 1 && data == 0x00)
+		chip->num_regulator = 1;
+	else if (chip->pdata->num_buck == 2 && data != 0x00)
+		chip->num_regulator = 2;
+	else {
 		dev_err(chip->dev, "Configuration is mismatched\n");
 		return -EINVAL;
 	}
@@ -438,6 +451,9 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
 	case DA9213_DEVICE_ID:
 		chip->chip_id = DA9213;
 		break;
+	case DA9215_DEVICE_ID:
+		chip->chip_id = DA9215;
+		break;
 	default:
 		dev_err(chip->dev, "Unsupported device id = 0x%x.\n", data);
 		return -ENODEV;
@@ -478,6 +494,7 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
 static const struct i2c_device_id da9211_i2c_id[] = {
 	{"da9211", DA9211},
 	{"da9213", DA9213},
+	{"da9215", DA9215},
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, da9211_i2c_id);
@@ -486,6 +503,7 @@ MODULE_DEVICE_TABLE(i2c, da9211_i2c_id);
 static const struct of_device_id da9211_dt_ids[] = {
 	{ .compatible = "dlg,da9211", .data = &da9211_i2c_id[0] },
 	{ .compatible = "dlg,da9213", .data = &da9211_i2c_id[1] },
+	{ .compatible = "dlg,da9215", .data = &da9211_i2c_id[2] },
 	{},
 };
 MODULE_DEVICE_TABLE(of, da9211_dt_ids);
@@ -504,5 +522,5 @@ static struct i2c_driver da9211_regulator_driver = {
 module_i2c_driver(da9211_regulator_driver);
 
 MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
-MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211/DA9213");
-MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211/DA9213/DA9215");
+MODULE_LICENSE("GPL");

drivers/regulator/da9211-regulator.h

 /*
- * da9211-regulator.h - Regulator definitions for DA9211/DA9213
- * Copyright (C) 2014  Dialog Semiconductor Ltd.
+ * da9211-regulator.h - Regulator definitions for DA9211/DA9213/DA9215
+ * Copyright (C) 2015  Dialog Semiconductor Ltd.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library 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 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 library is distributed in the hope that it will be useful,
+ * 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
- * Library General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  */
 
 #ifndef __DA9211_REGISTERS_H__

drivers/regulator/fan53555.c

@@ -439,6 +439,7 @@ static const struct i2c_device_id fan53555_id[] = {
 	},
 	{ },
 };
+MODULE_DEVICE_TABLE(i2c, fan53555_id);
 
 static struct i2c_driver fan53555_regulator_driver = {
 	.driver = {

drivers/regulator/isl9305.c

@@ -183,6 +183,7 @@ static const struct of_device_id isl9305_dt_ids[] = {
 	{ .compatible = "isil,isl9305h" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, isl9305_dt_ids);
 #endif
 
 static const struct i2c_device_id isl9305_i2c_id[] = {

include/linux/regulator/da9211.h

 /*
- * da9211.h - Regulator device driver for DA9211/DA9213
- * Copyright (C) 2014  Dialog Semiconductor Ltd.
+ * da9211.h - Regulator device driver for DA9211/DA9213/DA9215
+ * Copyright (C) 2015  Dialog Semiconductor Ltd.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library 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 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 library is distributed in the hope that it will be useful,
+ * 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
- * Library General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  */
 
 #ifndef __LINUX_REGULATOR_DA9211_H
@@ -23,6 +23,7 @@
 enum da9211_chip_id {
 	DA9211,
 	DA9213,
+	DA9215,
 };
 
 struct da9211_pdata {