Merge branch 'regulator-drivers' into regulator-supply

drivers/regulator/Kconfig

@@ -136,6 +136,14 @@ config REGULATOR_MAX8998
 	  via I2C bus. The provided regulator is suitable for S3C6410
 	  and S5PC1XX chips to control VCC_CORE and VCC_USIM voltages.
 
+config REGULATOR_S5M8767
+	tristate "Samsung S5M8767A voltage regulator"
+	depends on MFD_S5M_CORE
+	help
+	 This driver supports a Samsung S5M8767A voltage output regulator
+	 via I2C bus. S5M8767A have 9 Bucks and 28 LDOs output and
+	 supports DVS mode with 8bits of output voltage control.
+
 config REGULATOR_TWL4030
 	bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 PMIC"
 	depends on TWL4030_CORE
@@ -267,6 +275,15 @@ config REGULATOR_TPS6507X
 	  three step-down converters and two general-purpose LDO voltage regulators.
 	  It supports TI's software based Class-2 SmartReflex implementation.
 
+config REGULATOR_TPS65217
+	tristate "TI TPS65217 Power regulators"
+	depends on MFD_TPS65217
+	help
+	  This driver supports TPS65217 voltage regulator chips. TPS65217
+	  provides three step-down converters and four general-purpose LDO
+	  voltage regulators. It supports software based voltage control
+	  for different voltage domains
+
 config REGULATOR_TPS65912
 	tristate "TI TPS65912 Power regulator"
 	depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
@@ -299,9 +316,13 @@ config REGULATOR_AB8500
 	  This driver supports the regulators found on the ST-Ericsson mixed
 	  signal AB8500 PMIC
 
+config REGULATOR_DBX500_PRCMU
+	bool
+
 config REGULATOR_DB8500_PRCMU
 	bool "ST-Ericsson DB8500 Voltage Domain Regulators"
 	depends on MFD_DB8500_PRCMU
+	select REGULATOR_DBX500_PRCMU
 	help
 	  This driver supports the voltage domain regulators controlled by the
 	  DB8500 PRCMU
@@ -328,6 +349,16 @@ config REGULATOR_TPS65910
 	help
 	  This driver supports TPS65910 voltage regulator chips.
 
+config REGULATOR_TPS62360
+	tristate "TI TPS62360 Power Regulator"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  This driver supports TPS62360 voltage regulator chip. This
+	  regulator is meant for processor core supply. This chip is
+	  high-frequency synchronous step down dc-dc converter optimized
+	  for battery-powered portable applications.
+
 config REGULATOR_AAT2870
 	tristate "AnalogicTech AAT2870 Regulators"
 	depends on MFD_AAT2870_CORE

drivers/regulator/Makefile

@@ -40,13 +40,18 @@ obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
 obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
 obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
 obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
 obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500.o
+obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o
 obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
 obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
+obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
 obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
+obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
+
 
 ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG

drivers/regulator/db8500-prcmu.c

@@ -18,74 +18,11 @@
 #include <linux/regulator/machine.h>
 #include <linux/regulator/db8500-prcmu.h>
 #include <linux/module.h>
-
-/*
- * power state reference count
- */
-static int power_state_active_cnt; /* will initialize to zero */
-static DEFINE_SPINLOCK(power_state_active_lock);
-
-static void power_state_active_enable(void)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&power_state_active_lock, flags);
-	power_state_active_cnt++;
-	spin_unlock_irqrestore(&power_state_active_lock, flags);
-}
-
-static int power_state_active_disable(void)
-{
-	int ret = 0;
-	unsigned long flags;
-
-	spin_lock_irqsave(&power_state_active_lock, flags);
-	if (power_state_active_cnt <= 0) {
-		pr_err("power state: unbalanced enable/disable calls\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	power_state_active_cnt--;
-out:
-	spin_unlock_irqrestore(&power_state_active_lock, flags);
-	return ret;
-}
-
-/*
- * Exported interface for CPUIdle only. This function is called when interrupts
- * are turned off. Hence, no locking.
- */
-int power_state_active_is_enabled(void)
-{
-	return (power_state_active_cnt > 0);
-}
-
-/**
- * struct db8500_regulator_info - db8500 regulator information
- * @dev: device pointer
- * @desc: regulator description
- * @rdev: regulator device pointer
- * @is_enabled: status of the regulator
- * @epod_id: id for EPOD (power domain)
- * @is_ramret: RAM retention switch for EPOD (power domain)
- * @operating_point: operating point (only for vape, to be removed)
- *
- */
-struct db8500_regulator_info {
-	struct device *dev;
-	struct regulator_desc desc;
-	struct regulator_dev *rdev;
-	bool is_enabled;
-	u16 epod_id;
-	bool is_ramret;
-	bool exclude_from_power_state;
-	unsigned int operating_point;
-};
+#include "dbx500-prcmu.h"
 
 static int db8500_regulator_enable(struct regulator_dev *rdev)
 {
-	struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+	struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
 
 	if (info == NULL)
 		return -EINVAL;
@@ -93,16 +30,18 @@ static int db8500_regulator_enable(struct regulator_dev *rdev)
 	dev_vdbg(rdev_get_dev(rdev), "regulator-%s-enable\n",
 		info->desc.name);
 
-	info->is_enabled = true;
-	if (!info->exclude_from_power_state)
-		power_state_active_enable();
+	if (!info->is_enabled) {
+		info->is_enabled = true;
+		if (!info->exclude_from_power_state)
+			power_state_active_enable();
+	}
 
 	return 0;
 }
 
 static int db8500_regulator_disable(struct regulator_dev *rdev)
 {
-	struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+	struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
 	int ret = 0;
 
 	if (info == NULL)
@@ -111,16 +50,18 @@ static int db8500_regulator_disable(struct regulator_dev *rdev)
 	dev_vdbg(rdev_get_dev(rdev), "regulator-%s-disable\n",
 		info->desc.name);
 
-	info->is_enabled = false;
-	if (!info->exclude_from_power_state)
-		ret = power_state_active_disable();
+	if (info->is_enabled) {
+		info->is_enabled = false;
+		if (!info->exclude_from_power_state)
+			ret = power_state_active_disable();
+	}
 
 	return ret;
 }
 
 static int db8500_regulator_is_enabled(struct regulator_dev *rdev)
 {
-	struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+	struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
 
 	if (info == NULL)
 		return -EINVAL;
@@ -197,7 +138,7 @@ static int disable_epod(u16 epod_id, bool ramret)
  */
 static int db8500_regulator_switch_enable(struct regulator_dev *rdev)
 {
-	struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+	struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
 	int ret;
 
 	if (info == NULL)
@@ -221,7 +162,7 @@ static int db8500_regulator_switch_enable(struct regulator_dev *rdev)
 
 static int db8500_regulator_switch_disable(struct regulator_dev *rdev)
 {
-	struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+	struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
 	int ret;
 
 	if (info == NULL)
@@ -245,7 +186,7 @@ static int db8500_regulator_switch_disable(struct regulator_dev *rdev)
 
 static int db8500_regulator_switch_is_enabled(struct regulator_dev *rdev)
 {
-	struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+	struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
 
 	if (info == NULL)
 		return -EINVAL;
@@ -266,8 +207,8 @@ static struct regulator_ops db8500_regulator_switch_ops = {
 /*
  * Regulator information
  */
-static struct db8500_regulator_info
-db8500_regulator_info[DB8500_NUM_REGULATORS] = {
+static struct dbx500_regulator_info
+dbx500_regulator_info[DB8500_NUM_REGULATORS] = {
 	[DB8500_REGULATOR_VAPE] = {
 		.desc = {
 			.name	= "db8500-vape",
@@ -476,12 +417,12 @@ static int __devinit db8500_regulator_probe(struct platform_device *pdev)
 	int i, err;
 
 	/* register all regulators */
-	for (i = 0; i < ARRAY_SIZE(db8500_regulator_info); i++) {
-		struct db8500_regulator_info *info;
+	for (i = 0; i < ARRAY_SIZE(dbx500_regulator_info); i++) {
+		struct dbx500_regulator_info *info;
 		struct regulator_init_data *init_data = &db8500_init_data[i];
 
 		/* assign per-regulator data */
-		info = &db8500_regulator_info[i];
+		info = &dbx500_regulator_info[i];
 		info->dev = &pdev->dev;
 
 		/* register with the regulator framework */
@@ -494,7 +435,7 @@ static int __devinit db8500_regulator_probe(struct platform_device *pdev)
 
 			/* if failing, unregister all earlier regulators */
 			while (--i >= 0) {
-				info = &db8500_regulator_info[i];
+				info = &dbx500_regulator_info[i];
 				regulator_unregister(info->rdev);
 			}
 			return err;
@@ -503,17 +444,22 @@ static int __devinit db8500_regulator_probe(struct platform_device *pdev)
 		dev_dbg(rdev_get_dev(info->rdev),
 			"regulator-%s-probed\n", info->desc.name);
 	}
+	err = ux500_regulator_debug_init(pdev,
+					 dbx500_regulator_info,
+					 ARRAY_SIZE(dbx500_regulator_info));
 
-	return 0;
+	return err;
 }
 
 static int __exit db8500_regulator_remove(struct platform_device *pdev)
 {
 	int i;
 
-	for (i = 0; i < ARRAY_SIZE(db8500_regulator_info); i++) {
-		struct db8500_regulator_info *info;
-		info = &db8500_regulator_info[i];
+	ux500_regulator_debug_exit();
+
+	for (i = 0; i < ARRAY_SIZE(dbx500_regulator_info); i++) {
+		struct dbx500_regulator_info *info;
+		info = &dbx500_regulator_info[i];
 
 		dev_vdbg(rdev_get_dev(info->rdev),
 			"regulator-%s-remove\n", info->desc.name);

drivers/regulator/dbx500-prcmu.c

+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
+ *
+ * UX500 common part of Power domain regulators
+ */
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/regulator/driver.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+
+#include "dbx500-prcmu.h"
+
+/*
+ * power state reference count
+ */
+static int power_state_active_cnt; /* will initialize to zero */
+static DEFINE_SPINLOCK(power_state_active_lock);
+
+int power_state_active_get(void)
+{
+	unsigned long flags;
+	int cnt;
+
+	spin_lock_irqsave(&power_state_active_lock, flags);
+	cnt = power_state_active_cnt;
+	spin_unlock_irqrestore(&power_state_active_lock, flags);
+
+	return cnt;
+}
+
+void power_state_active_enable(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&power_state_active_lock, flags);
+	power_state_active_cnt++;
+	spin_unlock_irqrestore(&power_state_active_lock, flags);
+}
+
+int power_state_active_disable(void)
+{
+	int ret = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&power_state_active_lock, flags);
+	if (power_state_active_cnt <= 0) {
+		pr_err("power state: unbalanced enable/disable calls\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	power_state_active_cnt--;
+out:
+	spin_unlock_irqrestore(&power_state_active_lock, flags);
+	return ret;
+}
+
+#ifdef CONFIG_REGULATOR_DEBUG
+
+static struct ux500_regulator_debug {
+	struct dentry *dir;
+	struct dentry *status_file;
+	struct dentry *power_state_cnt_file;
+	struct dbx500_regulator_info *regulator_array;
+	int num_regulators;
+	u8 *state_before_suspend;
+	u8 *state_after_suspend;
+} rdebug;
+
+void ux500_regulator_suspend_debug(void)
+{
+	int i;
+	for (i = 0; i < rdebug.num_regulators; i++)
+		rdebug.state_before_suspend[i] =
+			rdebug.regulator_array[i].is_enabled;
+}
+
+void ux500_regulator_resume_debug(void)
+{
+	int i;
+	for (i = 0; i < rdebug.num_regulators; i++)
+		rdebug.state_after_suspend[i] =
+			rdebug.regulator_array[i].is_enabled;
+}
+
+static int ux500_regulator_power_state_cnt_print(struct seq_file *s, void *p)
+{
+	struct device *dev = s->private;
+	int err;
+
+	/* print power state count */
+	err = seq_printf(s, "ux500-regulator power state count: %i\n",
+		power_state_active_get());
+	if (err < 0)
+		dev_err(dev, "seq_printf overflow\n");
+
+	return 0;
+}
+
+static int ux500_regulator_power_state_cnt_open(struct inode *inode,
+	struct file *file)
+{
+	return single_open(file, ux500_regulator_power_state_cnt_print,
+		inode->i_private);
+}
+
+static const struct file_operations ux500_regulator_power_state_cnt_fops = {
+	.open = ux500_regulator_power_state_cnt_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ux500_regulator_status_print(struct seq_file *s, void *p)
+{
+	struct device *dev = s->private;
+	int err;
+	int i;
+
+	/* print dump header */
+	err = seq_printf(s, "ux500-regulator status:\n");
+	if (err < 0)
+		dev_err(dev, "seq_printf overflow\n");
+
+	err = seq_printf(s, "%31s : %8s : %8s\n", "current",
+		"before", "after");
+	if (err < 0)
+		dev_err(dev, "seq_printf overflow\n");
+
+	for (i = 0; i < rdebug.num_regulators; i++) {
+		struct dbx500_regulator_info *info;
+		/* Access per-regulator data */
+		info = &rdebug.regulator_array[i];
+
+		/* print status */
+		err = seq_printf(s, "%20s : %8s : %8s : %8s\n", info->desc.name,
+			info->is_enabled ? "enabled" : "disabled",
+			rdebug.state_before_suspend[i] ? "enabled" : "disabled",
+			rdebug.state_after_suspend[i] ? "enabled" : "disabled");
+		if (err < 0)
+			dev_err(dev, "seq_printf overflow\n");
+	}
+
+	return 0;
+}
+
+static int ux500_regulator_status_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ux500_regulator_status_print,
+		inode->i_private);
+}
+
+static const struct file_operations ux500_regulator_status_fops = {
+	.open = ux500_regulator_status_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+int __attribute__((weak)) dbx500_regulator_testcase(
+	struct dbx500_regulator_info *regulator_info,
+	int num_regulators)
+{
+	return 0;
+}
+
+int __devinit
+ux500_regulator_debug_init(struct platform_device *pdev,
+	struct dbx500_regulator_info *regulator_info,
+	int num_regulators)
+{
+	/* create directory */
+	rdebug.dir = debugfs_create_dir("ux500-regulator", NULL);
+	if (!rdebug.dir)
+		goto exit_no_debugfs;
+
+	/* create "status" file */
+	rdebug.status_file = debugfs_create_file("status",
+		S_IRUGO, rdebug.dir, &pdev->dev,
+		&ux500_regulator_status_fops);
+	if (!rdebug.status_file)
+		goto exit_destroy_dir;
+
+	/* create "power-state-count" file */
+	rdebug.power_state_cnt_file = debugfs_create_file("power-state-count",
+		S_IRUGO, rdebug.dir, &pdev->dev,
+		&ux500_regulator_power_state_cnt_fops);
+	if (!rdebug.power_state_cnt_file)
+		goto exit_destroy_status;
+
+	rdebug.regulator_array = regulator_info;
+	rdebug.num_regulators = num_regulators;
+
+	rdebug.state_before_suspend = kzalloc(num_regulators, GFP_KERNEL);
+	if (!rdebug.state_before_suspend) {
+		dev_err(&pdev->dev,
+			"could not allocate memory for saving state\n");
+		goto exit_destroy_power_state;
+	}
+
+	rdebug.state_after_suspend = kzalloc(num_regulators, GFP_KERNEL);
+	if (!rdebug.state_after_suspend) {
+		dev_err(&pdev->dev,
+			"could not allocate memory for saving state\n");
+		goto exit_free;
+	}
+
+	dbx500_regulator_testcase(regulator_info, num_regulators);
+	return 0;
+
+exit_free:
+	kfree(rdebug.state_before_suspend);
+exit_destroy_power_state:
+	debugfs_remove(rdebug.power_state_cnt_file);
+exit_destroy_status:
+	debugfs_remove(rdebug.status_file);
+exit_destroy_dir:
+	debugfs_remove(rdebug.dir);
+exit_no_debugfs:
+	dev_err(&pdev->dev, "failed to create debugfs entries.\n");
+	return -ENOMEM;
+}
+
+int __devexit ux500_regulator_debug_exit(void)
+{
+	debugfs_remove_recursive(rdebug.dir);
+	kfree(rdebug.state_after_suspend);
+	kfree(rdebug.state_before_suspend);
+
+	return 0;
+}
+#endif

drivers/regulator/dbx500-prcmu.h

+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Bengt Jonsson <bengt.jonsson@stericsson.com> for ST-Ericsson,
+ *	   Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson
+ *
+ * License Terms: GNU General Public License v2
+ *
+ */
+
+#ifndef DBX500_REGULATOR_H
+#define DBX500_REGULATOR_H
+
+#include <linux/platform_device.h>
+
+/**
+ * struct dbx500_regulator_info - dbx500 regulator information
+ * @dev: device pointer
+ * @desc: regulator description
+ * @rdev: regulator device pointer
+ * @is_enabled: status of the regulator
+ * @epod_id: id for EPOD (power domain)
+ * @is_ramret: RAM retention switch for EPOD (power domain)
+ * @operating_point: operating point (only for vape, to be removed)
+ *
+ */
+struct dbx500_regulator_info {
+	struct device *dev;
+	struct regulator_desc desc;
+	struct regulator_dev *rdev;
+	bool is_enabled;
+	u16 epod_id;
+	bool is_ramret;
+	bool exclude_from_power_state;
+	unsigned int operating_point;
+};
+
+void power_state_active_enable(void);
+int power_state_active_disable(void);
+
+
+#ifdef CONFIG_REGULATOR_DEBUG
+int ux500_regulator_debug_init(struct platform_device *pdev,
+			       struct dbx500_regulator_info *regulator_info,
+			       int num_regulators);
+
+int ux500_regulator_debug_exit(void);
+#else
+
+static inline int ux500_regulator_debug_init(struct platform_device *pdev,
+			     struct dbx500_regulator_info *regulator_info,
+			     int num_regulators)
+{
+	return 0;
+}
+
+static inline int ux500_regulator_debug_exit(void)
+{
+	return 0;
+}
+
+#endif
+#endif

drivers/regulator/max8997.c

@@ -908,13 +908,13 @@ static struct regulator_desc regulators[] = {
 	},
 	regulator_desc_buck(7),
 	{
-		.name	= "EN32KHz AP",
+		.name	= "EN32KHz_AP",
 		.id	= MAX8997_EN32KHZ_AP,
 		.ops	= &max8997_fixedvolt_ops,
 		.type	= REGULATOR_VOLTAGE,
 		.owner	= THIS_MODULE,
 	}, {
-		.name	= "EN32KHz CP",
+		.name	= "EN32KHz_CP",
 		.id	= MAX8997_EN32KHZ_CP,
 		.ops	= &max8997_fixedvolt_ops,
 		.type	= REGULATOR_VOLTAGE,
@@ -938,7 +938,7 @@ static struct regulator_desc regulators[] = {
 		.type	= REGULATOR_VOLTAGE,
 		.owner	 = THIS_MODULE,
 	}, {
-		.name	= "CHARGER CV",
+		.name	= "CHARGER_CV",
 		.id	= MAX8997_CHARGER_CV,
 		.ops	= &max8997_fixedstate_ops,
 		.type	= REGULATOR_VOLTAGE,
@@ -950,7 +950,7 @@ static struct regulator_desc regulators[] = {
 		.type	= REGULATOR_CURRENT,
 		.owner	 = THIS_MODULE,
 	}, {
-		.name	= "CHARGER TOPOFF",
+		.name	= "CHARGER_TOPOFF",
 		.id	= MAX8997_CHARGER_TOPOFF,
 		.ops	= &max8997_charger_fixedstate_ops,
 		.type	= REGULATOR_CURRENT,

drivers/regulator/mc13xxx-regulator-core.c

@@ -254,6 +254,7 @@ int __devinit mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
 
 	return num;
 }
+EXPORT_SYMBOL_GPL(mc13xxx_get_num_regulators_dt);
 
 struct mc13xxx_regulator_init_data * __devinit mc13xxx_parse_regulators_dt(
 	struct platform_device *pdev, struct mc13xxx_regulator *regulators,
@@ -291,6 +292,7 @@ struct mc13xxx_regulator_init_data * __devinit mc13xxx_parse_regulators_dt(
 
 	return data;
 }
+EXPORT_SYMBOL_GPL(mc13xxx_parse_regulators_dt);
 #endif
 
 MODULE_LICENSE("GPL v2");

drivers/regulator/tps62360-regulator.c

+/*
+ * tps62360.c -- TI tps62360
+ *
+ * Driver for processor core supply tps62360 and tps62361B
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; 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
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/tps62360.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+
+/* Register definitions */
+#define REG_VSET0		0
+#define REG_VSET1		1
+#define REG_VSET2		2
+#define REG_VSET3		3
+#define REG_CONTROL		4
+#define REG_TEMP		5
+#define REG_RAMPCTRL		6
+#define REG_CHIPID		8
+
+enum chips {TPS62360, TPS62361};
+
+#define TPS62360_BASE_VOLTAGE	770
+#define TPS62360_N_VOLTAGES	64
+
+#define TPS62361_BASE_VOLTAGE	500
+#define TPS62361_N_VOLTAGES	128
+
+/* tps 62360 chip information */
+struct tps62360_chip {
+	const char *name;
+	struct device *dev;
+	struct regulator_desc desc;
+	struct i2c_client *client;
+	struct regulator_dev *rdev;
+	struct regmap *regmap;
+	int chip_id;
+	int vsel0_gpio;
+	int vsel1_gpio;
+	int voltage_base;
+	u8 voltage_reg_mask;
+	bool en_internal_pulldn;
+	bool en_force_pwm;
+	bool en_discharge;
+	bool valid_gpios;
+	int lru_index[4];
+	int curr_vset_vsel[4];
+	int curr_vset_id;
+};
+
+/*
+ * find_voltage_set_register: Find new voltage configuration register
+ * (VSET) id.
+ * The finding of the new VSET register will be based on the LRU mechanism.
+ * Each VSET register will have different voltage configured . This
+ * Function will look if any of the VSET register have requested voltage set
+ * or not.
+ *     - If it is already there then it will make that register as most
+ *       recently used and return as found so that caller need not to set
+ *       the VSET register but need to set the proper gpios to select this
+ *       VSET register.
+ *     - If requested voltage is not found then it will use the least
+ *       recently mechanism to get new VSET register for new configuration
+ *       and will return not_found so that caller need to set new VSET
+ *       register and then gpios (both).
+ */
+static bool find_voltage_set_register(struct tps62360_chip *tps,
+		int req_vsel, int *vset_reg_id)
+{
+	int i;
+	bool found = false;
+	int new_vset_reg = tps->lru_index[3];
+	int found_index = 3;
+	for (i = 0; i < 4; ++i) {
+		if (tps->curr_vset_vsel[tps->lru_index[i]] == req_vsel) {
+			new_vset_reg = tps->lru_index[i];
+			found_index = i;
+			found = true;
+			goto update_lru_index;
+		}
+	}
+
+update_lru_index:
+	for (i = found_index; i > 0; i--)
+		tps->lru_index[i] = tps->lru_index[i - 1];
+
+	tps->lru_index[0] = new_vset_reg;
+	*vset_reg_id = new_vset_reg;
+	return found;
+}
+
+static int tps62360_dcdc_get_voltage(struct regulator_dev *dev)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(dev);
+	int vsel;
+	unsigned int data;
+	int ret;
+
+	ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s: Error in reading register %d\n",
+			__func__, REG_VSET0 + tps->curr_vset_id);
+		return ret;
+	}
+	vsel = (int)data & tps->voltage_reg_mask;
+	return (tps->voltage_base + vsel * 10) * 1000;
+}
+
+static int tps62360_dcdc_set_voltage(struct regulator_dev *dev,
+	     int min_uV, int max_uV, unsigned *selector)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(dev);
+	int vsel;
+	int ret;
+	bool found = false;
+	int new_vset_id = tps->curr_vset_id;
+
+	if (max_uV < min_uV)
+		return -EINVAL;
+
+	if (min_uV >
+		((tps->voltage_base + (tps->desc.n_voltages - 1) * 10) * 1000))
+		return -EINVAL;
+
+	if (max_uV < tps->voltage_base * 1000)
+		return -EINVAL;
+
+	vsel = DIV_ROUND_UP(min_uV - (tps->voltage_base * 1000), 10000);
+	if (selector)
+		*selector = (vsel & tps->voltage_reg_mask);
+
+	/*
+	 * If gpios are available to select the VSET register then least
+	 * recently used register for new configuration.
+	 */
+	if (tps->valid_gpios)
+		found = find_voltage_set_register(tps, vsel, &new_vset_id);
+
+	if (!found) {
+		ret = regmap_update_bits(tps->regmap, REG_VSET0 + new_vset_id,
+				tps->voltage_reg_mask, vsel);
+		if (ret < 0) {
+			dev_err(tps->dev, "%s: Error in updating register %d\n",
+				 __func__, REG_VSET0 + new_vset_id);
+			return ret;
+		}
+		tps->curr_vset_id = new_vset_id;
+		tps->curr_vset_vsel[new_vset_id] = vsel;
+	}
+
+	/* Select proper VSET register vio gpios */
+	if (tps->valid_gpios) {
+		gpio_set_value_cansleep(tps->vsel0_gpio,
+					new_vset_id & 0x1);
+		gpio_set_value_cansleep(tps->vsel1_gpio,
+					(new_vset_id >> 1) & 0x1);
+	}
+	return 0;
+}
+
+static int tps62360_dcdc_list_voltage(struct regulator_dev *dev,
+					unsigned selector)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(dev);
+
+	if ((selector < 0) || (selector >= tps->desc.n_voltages))
+		return -EINVAL;
+	return (tps->voltage_base + selector * 10) * 1000;
+}
+
+static struct regulator_ops tps62360_dcdc_ops = {
+	.get_voltage = tps62360_dcdc_get_voltage,
+	.set_voltage = tps62360_dcdc_set_voltage,
+	.list_voltage = tps62360_dcdc_list_voltage,
+};
+
+static int tps62360_init_force_pwm(struct tps62360_chip *tps,
+	struct tps62360_regulator_platform_data *pdata,
+	int vset_id)
+{
+	unsigned int data;
+	int ret;
+	ret = regmap_read(tps->regmap, REG_VSET0 + vset_id, &data);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s() fails in writing reg %d\n",
+			__func__, REG_VSET0 + vset_id);
+		return ret;
+	}
+	tps->curr_vset_vsel[vset_id] = data & tps->voltage_reg_mask;
+	if (pdata->en_force_pwm)
+		data |= BIT(7);
+	else
+		data &= ~BIT(7);
+	ret = regmap_write(tps->regmap, REG_VSET0 + vset_id, data);
+	if (ret < 0)
+		dev_err(tps->dev, "%s() fails in writing reg %d\n",
+				__func__, REG_VSET0 + vset_id);
+	return ret;
+}
+
+static int tps62360_init_dcdc(struct tps62360_chip *tps,
+		struct tps62360_regulator_platform_data *pdata)
+{
+	int ret;
+	int i;
+
+	/* Initailize internal pull up/down control */
+	if (tps->en_internal_pulldn)
+		ret = regmap_write(tps->regmap, REG_CONTROL, 0xE0);
+	else
+		ret = regmap_write(tps->regmap, REG_CONTROL, 0x0);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s() fails in writing reg %d\n",
+			__func__, REG_CONTROL);
+		return ret;
+	}
+
+	/* Initailize force PWM mode */
+	if (tps->valid_gpios) {
+		for (i = 0; i < 4; ++i) {
+			ret = tps62360_init_force_pwm(tps, pdata, i);
+			if (ret < 0)
+				return ret;
+		}
+	} else {
+		ret = tps62360_init_force_pwm(tps, pdata, tps->curr_vset_id);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Reset output discharge path to reduce power consumption */
+	ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0);
+	if (ret < 0)
+		dev_err(tps->dev, "%s() fails in updating reg %d\n",
+			__func__, REG_RAMPCTRL);
+	return ret;
+}
+
+static const struct regmap_config tps62360_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static int __devinit tps62360_probe(struct i2c_client *client,
+				     const struct i2c_device_id *id)
+{
+	struct tps62360_regulator_platform_data *pdata;
+	struct regulator_dev *rdev;
+	struct tps62360_chip *tps;
+	int ret;
+	int i;
+
+	pdata = client->dev.platform_data;
+	if (!pdata) {
+		dev_err(&client->dev, "%s() Err: Platform data not found\n",
+						__func__);
+		return -EIO;
+	}
+
+	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+	if (!tps) {
+		dev_err(&client->dev, "%s() Err: Memory allocation fails\n",
+						__func__);
+		return -ENOMEM;
+	}
+
+	tps->en_force_pwm = pdata->en_force_pwm;
+	tps->en_discharge = pdata->en_discharge;
+	tps->en_internal_pulldn = pdata->en_internal_pulldn;
+	tps->vsel0_gpio = pdata->vsel0_gpio;
+	tps->vsel1_gpio = pdata->vsel1_gpio;
+	tps->client = client;
+	tps->dev = &client->dev;
+	tps->name = id->name;
+	tps->voltage_base = (id->driver_data == TPS62360) ?
+				TPS62360_BASE_VOLTAGE : TPS62361_BASE_VOLTAGE;
+	tps->voltage_reg_mask = (id->driver_data == TPS62360) ? 0x3F : 0x7F;
+
+	tps->desc.name = id->name;
+	tps->desc.id = 0;
+	tps->desc.n_voltages = (id->driver_data == TPS62360) ?
+				TPS62360_N_VOLTAGES : TPS62361_N_VOLTAGES;
+	tps->desc.ops = &tps62360_dcdc_ops;
+	tps->desc.type = REGULATOR_VOLTAGE;
+	tps->desc.owner = THIS_MODULE;
+	tps->regmap = regmap_init_i2c(client, &tps62360_regmap_config);
+	if (IS_ERR(tps->regmap)) {
+		ret = PTR_ERR(tps->regmap);
+		dev_err(&client->dev, "%s() Err: Failed to allocate register"
+			"map: %d\n", __func__, ret);
+		return ret;
+	}
+	i2c_set_clientdata(client, tps);
+
+	tps->curr_vset_id = (pdata->vsel1_def_state & 1) * 2 +
+				(pdata->vsel0_def_state & 1);
+	tps->lru_index[0] = tps->curr_vset_id;
+	tps->valid_gpios = false;
+
+	if (gpio_is_valid(tps->vsel0_gpio) && gpio_is_valid(tps->vsel1_gpio)) {
+		ret = gpio_request(tps->vsel0_gpio, "tps62360-vsel0");
+		if (ret) {
+			dev_err(&client->dev,
+				"Err: Could not obtain vsel0 GPIO %d: %d\n",
+						tps->vsel0_gpio, ret);
+			goto err_gpio0;
+		}
+		ret = gpio_direction_output(tps->vsel0_gpio,
+					pdata->vsel0_def_state);
+		if (ret) {
+			dev_err(&client->dev, "Err: Could not set direction of"
+				"vsel0 GPIO %d: %d\n", tps->vsel0_gpio, ret);
+			gpio_free(tps->vsel0_gpio);
+			goto err_gpio0;
+		}
+
+		ret = gpio_request(tps->vsel1_gpio, "tps62360-vsel1");
+		if (ret) {
+			dev_err(&client->dev,
+				"Err: Could not obtain vsel1 GPIO %d: %d\n",
+						tps->vsel1_gpio, ret);
+			goto err_gpio1;
+		}
+		ret = gpio_direction_output(tps->vsel1_gpio,
+					pdata->vsel1_def_state);
+		if (ret) {
+			dev_err(&client->dev, "Err: Could not set direction of"
+				"vsel1 GPIO %d: %d\n", tps->vsel1_gpio, ret);
+			gpio_free(tps->vsel1_gpio);
+			goto err_gpio1;
+		}
+		tps->valid_gpios = true;
+
+		/*
+		 * Initialize the lru index with vset_reg id
+		 * The index 0 will be most recently used and
+		 * set with the tps->curr_vset_id */
+		for (i = 0; i < 4; ++i)
+			tps->lru_index[i] = i;
+		tps->lru_index[0] = tps->curr_vset_id;
+		tps->lru_index[tps->curr_vset_id] = 0;
+	}
+
+	ret = tps62360_init_dcdc(tps, pdata);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s() Err: Init fails with = %d\n",
+				__func__, ret);
+		goto err_init;
+	}
+
+	/* Register the regulators */
+	rdev = regulator_register(&tps->desc, &client->dev,
+				&pdata->reg_init_data, tps, NULL);
+	if (IS_ERR(rdev)) {
+		dev_err(tps->dev, "%s() Err: Failed to register %s\n",
+				__func__, id->name);
+		ret = PTR_ERR(rdev);
+		goto err_init;
+	}
+
+	tps->rdev = rdev;
+	return 0;
+
+err_init:
+	if (gpio_is_valid(tps->vsel1_gpio))
+		gpio_free(tps->vsel1_gpio);
+err_gpio1:
+	if (gpio_is_valid(tps->vsel0_gpio))
+		gpio_free(tps->vsel0_gpio);
+err_gpio0:
+	regmap_exit(tps->regmap);
+	return ret;
+}
+
+/**
+ * tps62360_remove - tps62360 driver i2c remove handler
+ * @client: i2c driver client device structure
+ *
+ * Unregister TPS driver as an i2c client device driver
+ */
+static int __devexit tps62360_remove(struct i2c_client *client)
+{
+	struct tps62360_chip *tps = i2c_get_clientdata(client);
+
+	if (gpio_is_valid(tps->vsel1_gpio))
+		gpio_free(tps->vsel1_gpio);
+
+	if (gpio_is_valid(tps->vsel0_gpio))
+		gpio_free(tps->vsel0_gpio);
+
+	regulator_unregister(tps->rdev);
+	regmap_exit(tps->regmap);
+	return 0;
+}
+
+static void tps62360_shutdown(struct i2c_client *client)
+{
+	struct tps62360_chip *tps = i2c_get_clientdata(client);
+	int st;
+
+	if (!tps->en_discharge)
+		return;
+
+	/* Configure the output discharge path */
+	st = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), BIT(2));
+	if (st < 0)
+		dev_err(tps->dev, "%s() fails in updating reg %d\n",
+			__func__, REG_RAMPCTRL);
+}
+
+static const struct i2c_device_id tps62360_id[] = {
+	{.name = "tps62360", .driver_data = TPS62360},
+	{.name = "tps62361", .driver_data = TPS62361},
+	{},
+};
+
+MODULE_DEVICE_TABLE(i2c, tps62360_id);
+
+static struct i2c_driver tps62360_i2c_driver = {
+	.driver = {
+		.name = "tps62360",
+		.owner = THIS_MODULE,
+	},
+	.probe = tps62360_probe,
+	.remove = __devexit_p(tps62360_remove),
+	.shutdown = tps62360_shutdown,
+	.id_table = tps62360_id,
+};
+
+static int __init tps62360_init(void)
+{
+	return i2c_add_driver(&tps62360_i2c_driver);
+}
+subsys_initcall(tps62360_init);
+
+static void __exit tps62360_cleanup(void)
+{
+	i2c_del_driver(&tps62360_i2c_driver);
+}
+module_exit(tps62360_cleanup);
+
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_DESCRIPTION("TPS62360 voltage regulator driver");
+MODULE_LICENSE("GPL v2");

drivers/regulator/tps65217-regulator.c

+/*
+ * tps65217-regulator.c
+ *
+ * Regulator driver for TPS65217 PMIC
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65217.h>
+
+#define TPS65217_REGULATOR(_name, _id, _ops, _n)	\
+	{						\
+		.name		= _name,		\
+		.id		= _id,			\
+		.ops		= &_ops,		\
+		.n_voltages	= _n,			\
+		.type		= REGULATOR_VOLTAGE,	\
+		.owner		= THIS_MODULE,		\
+	}						\
+
+#define TPS65217_INFO(_nm, _min, _max, _f1, _f2, _t, _n, _em, _vr, _vm)	\
+	{						\
+		.name		= _nm,			\
+		.min_uV		= _min,			\
+		.max_uV		= _max,			\
+		.vsel_to_uv	= _f1,			\
+		.uv_to_vsel	= _f2,			\
+		.table		= _t,			\
+		.table_len	= _n,			\
+		.enable_mask	= _em,			\
+		.set_vout_reg	= _vr,			\
+		.set_vout_mask	= _vm,			\
+	}
+
+static const int LDO1_VSEL_table[] = {
+	1000000, 1100000, 1200000, 1250000,
+	1300000, 1350000, 1400000, 1500000,
+	1600000, 1800000, 2500000, 2750000,
+	2800000, 3000000, 3100000, 3300000,
+};
+
+static int tps65217_vsel_to_uv1(unsigned int vsel)
+{
+	int uV = 0;
+
+	if (vsel > 63)
+		return -EINVAL;
+
+	if (vsel <= 24)
+		uV = vsel * 25000 + 900000;
+	else if (vsel <= 52)
+		uV = (vsel - 24) * 50000 + 1500000;
+	else if (vsel < 56)
+		uV = (vsel - 52) * 100000 + 2900000;
+	else
+		uV = 3300000;
+
+	return uV;
+}
+
+static int tps65217_uv_to_vsel1(int uV, unsigned int *vsel)
+{
+	if ((uV < 0) && (uV > 3300000))
+		return -EINVAL;
+
+	if (uV <= 1500000)
+		*vsel = (uV - 875001) / 25000;
+	else if (uV <= 2900000)
+		*vsel = 24 + (uV - 1450001) / 50000;
+	else if (uV < 3300000)
+		*vsel = 52 + (uV - 2800001) / 100000;
+	else
+		*vsel = 56;
+
+	return 0;
+}
+
+static int tps65217_vsel_to_uv2(unsigned int vsel)
+{
+	int uV = 0;
+
+	if (vsel > 31)
+		return -EINVAL;
+
+	if (vsel <= 8)
+		uV = vsel * 50000 + 1500000;
+	else if (vsel <= 13)
+		uV = (vsel - 8) * 100000 + 1900000;
+	else
+		uV = (vsel - 13) * 50000 + 2400000;
+
+	return uV;
+}
+
+static int tps65217_uv_to_vsel2(int uV, unsigned int *vsel)
+{
+	if ((uV < 0) && (uV > 3300000))
+		return -EINVAL;
+
+	if (uV <= 1900000)
+		*vsel = (uV - 1450001) / 50000;
+	else if (uV <= 2400000)
+		*vsel = 8 + (uV - 1800001) / 100000;
+	else
+		*vsel = 13 + (uV - 2350001) / 50000;
+
+	return 0;
+}
+
+static struct tps_info tps65217_pmic_regs[] = {
+	TPS65217_INFO("DCDC1", 900000, 1800000, tps65217_vsel_to_uv1,
+			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC1_EN,
+			TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK),
+	TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1,
+			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC2_EN,
+			TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK),
+	TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1,
+			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC3_EN,
+			TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK),
+	TPS65217_INFO("LDO1", 1000000, 3300000, NULL, NULL, LDO1_VSEL_table,
+			16, TPS65217_ENABLE_LDO1_EN, TPS65217_REG_DEFLDO1,
+			TPS65217_DEFLDO1_LDO1_MASK),
+	TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1,
+			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_LDO2_EN,
+			TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK),
+	TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2,
+			tps65217_uv_to_vsel2, NULL, 32,
+			TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
+			TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK),
+	TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2,
+			tps65217_uv_to_vsel2, NULL, 32,
+			TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
+			TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK),
+};
+
+static int tps65217_pmic_dcdc_is_enabled(struct regulator_dev *dev)
+{
+	int ret;
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int data, dcdc = rdev_get_id(dev);
+
+	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+		return -EINVAL;
+
+	ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);
+	if (ret)
+		return ret;
+
+	return (data & tps->info[dcdc]->enable_mask) ? 1 : 0;
+}
+
+static int tps65217_pmic_ldo_is_enabled(struct regulator_dev *dev)
+{
+	int ret;
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int data, ldo = rdev_get_id(dev);
+
+	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+		return -EINVAL;
+
+	ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);
+	if (ret)
+		return ret;
+
+	return (data & tps->info[ldo]->enable_mask) ? 1 : 0;
+}
+
+static int tps65217_pmic_dcdc_enable(struct regulator_dev *dev)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int dcdc = rdev_get_id(dev);
+
+	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+		return -EINVAL;
+
+	/* Enable the regulator and password protection is level 1 */
+	return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
+				tps->info[dcdc]->enable_mask,
+				tps->info[dcdc]->enable_mask,
+				TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_dcdc_disable(struct regulator_dev *dev)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int dcdc = rdev_get_id(dev);
+
+	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+		return -EINVAL;
+
+	/* Disable the regulator and password protection is level 1 */
+	return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
+			tps->info[dcdc]->enable_mask, TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_ldo_enable(struct regulator_dev *dev)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int ldo = rdev_get_id(dev);
+
+	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+		return -EINVAL;
+
+	/* Enable the regulator and password protection is level 1 */
+	return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
+				tps->info[ldo]->enable_mask,
+				tps->info[ldo]->enable_mask,
+				TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_ldo_disable(struct regulator_dev *dev)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int ldo = rdev_get_id(dev);
+
+	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+		return -EINVAL;
+
+	/* Disable the regulator and password protection is level 1 */
+	return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
+			tps->info[ldo]->enable_mask, TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_dcdc_get_voltage_sel(struct regulator_dev *dev)
+{
+	int ret;
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int selector, dcdc = rdev_get_id(dev);
+
+	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+		return -EINVAL;
+
+	ret = tps65217_reg_read(tps, tps->info[dcdc]->set_vout_reg, &selector);
+	if (ret)
+		return ret;
+
+	selector &= tps->info[dcdc]->set_vout_mask;
+
+	return selector;
+}
+
+static int tps65217_pmic_dcdc_set_voltage(struct regulator_dev *dev,
+				  int min_uV, int max_uV, unsigned *selector)
+{
+	int ret;
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int dcdc = rdev_get_id(dev);
+
+	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+		return -EINVAL;
+
+	if (min_uV < tps->info[dcdc]->min_uV
+		|| min_uV > tps->info[dcdc]->max_uV)
+		return -EINVAL;
+
+	if (max_uV < tps->info[dcdc]->min_uV
+		|| max_uV > tps->info[dcdc]->max_uV)
+		return -EINVAL;
+
+	ret = tps->info[dcdc]->uv_to_vsel(min_uV, selector);
+	if (ret)
+		return ret;
+
+	/* Set the voltage based on vsel value and write protect level is 2 */
+	ret = tps65217_set_bits(tps, tps->info[dcdc]->set_vout_reg,
+					tps->info[dcdc]->set_vout_mask,
+					*selector, TPS65217_PROTECT_L2);
+	if (ret)
+		return ret;
+
+	/* Set GO bit to initiate voltage transistion */
+	return tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
+				TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
+				TPS65217_PROTECT_L2);
+}
+
+static int tps65217_pmic_ldo_get_voltage_sel(struct regulator_dev *dev)
+{
+	int ret;
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int selector, ldo = rdev_get_id(dev);
+
+	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+		return -EINVAL;
+
+	ret = tps65217_reg_read(tps, tps->info[ldo]->set_vout_reg, &selector);
+	if (ret)
+		return ret;
+
+	selector &= tps->info[ldo]->set_vout_mask;
+
+	return selector;
+}
+
+static int tps65217_pmic_ldo_set_voltage_sel(struct regulator_dev *dev,
+						unsigned selector)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	int ldo = rdev_get_id(dev);
+
+	if (ldo != TPS65217_LDO_1)
+		return -EINVAL;
+
+	if (selector >= tps->info[ldo]->table_len)
+		return -EINVAL;
+
+	/* Set the voltage based on vsel value and write protect level is 2 */
+	return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,
+					tps->info[ldo]->set_vout_mask,
+					selector, TPS65217_PROTECT_L2);
+}
+
+static int tps65217_pmic_ldo_set_voltage(struct regulator_dev *dev,
+				  int min_uV, int max_uV, unsigned *selector)
+{
+	int ret;
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int ldo = rdev_get_id(dev);
+
+	if (ldo < TPS65217_LDO_2 || ldo > TPS65217_LDO_4)
+		return -EINVAL;
+
+	if (min_uV < tps->info[ldo]->min_uV
+		|| min_uV > tps->info[ldo]->max_uV)
+		return -EINVAL;
+
+	if (max_uV < tps->info[ldo]->min_uV
+		|| max_uV > tps->info[ldo]->max_uV)
+		return -EINVAL;
+
+	ret = tps->info[ldo]->uv_to_vsel(min_uV, selector);
+	if (ret)
+		return ret;
+
+	/* Set the voltage based on vsel value and write protect level is 2 */
+	return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,
+					tps->info[ldo]->set_vout_mask,
+					*selector, TPS65217_PROTECT_L2);
+}
+
+static int tps65217_pmic_dcdc_list_voltage(struct regulator_dev *dev,
+					unsigned selector)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int dcdc = rdev_get_id(dev);
+
+	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+		return -EINVAL;
+
+	if (selector >= tps->info[dcdc]->table_len)
+		return -EINVAL;
+
+	return tps->info[dcdc]->vsel_to_uv(selector);
+}
+
+static int tps65217_pmic_ldo_list_voltage(struct regulator_dev *dev,
+					unsigned selector)
+{
+	struct tps65217 *tps = rdev_get_drvdata(dev);
+	unsigned int ldo = rdev_get_id(dev);
+
+	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+		return -EINVAL;
+
+	if (selector >= tps->info[ldo]->table_len)
+		return -EINVAL;
+
+	if (tps->info[ldo]->table)
+		return tps->info[ldo]->table[selector];
+
+	return tps->info[ldo]->vsel_to_uv(selector);
+}
+
+/* Operations permitted on DCDCx */
+static struct regulator_ops tps65217_pmic_dcdc_ops = {
+	.is_enabled		= tps65217_pmic_dcdc_is_enabled,
+	.enable			= tps65217_pmic_dcdc_enable,
+	.disable		= tps65217_pmic_dcdc_disable,
+	.get_voltage_sel	= tps65217_pmic_dcdc_get_voltage_sel,
+	.set_voltage		= tps65217_pmic_dcdc_set_voltage,
+	.list_voltage		= tps65217_pmic_dcdc_list_voltage,
+};
+
+/* Operations permitted on LDO1 */
+static struct regulator_ops tps65217_pmic_ldo1_ops = {
+	.is_enabled		= tps65217_pmic_ldo_is_enabled,
+	.enable			= tps65217_pmic_ldo_enable,
+	.disable		= tps65217_pmic_ldo_disable,
+	.get_voltage_sel	= tps65217_pmic_ldo_get_voltage_sel,
+	.set_voltage_sel	= tps65217_pmic_ldo_set_voltage_sel,
+	.list_voltage		= tps65217_pmic_ldo_list_voltage,
+};
+
+/* Operations permitted on LDO2, LDO3 and LDO4 */
+static struct regulator_ops tps65217_pmic_ldo234_ops = {
+	.is_enabled		= tps65217_pmic_ldo_is_enabled,
+	.enable			= tps65217_pmic_ldo_enable,
+	.disable		= tps65217_pmic_ldo_disable,
+	.get_voltage_sel	= tps65217_pmic_ldo_get_voltage_sel,
+	.set_voltage		= tps65217_pmic_ldo_set_voltage,
+	.list_voltage		= tps65217_pmic_ldo_list_voltage,
+};
+
+static struct regulator_desc regulators[] = {
+	TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1,
+				tps65217_pmic_dcdc_ops, 64),
+	TPS65217_REGULATOR("DCDC2",TPS65217_DCDC_2,
+				tps65217_pmic_dcdc_ops, 64),
+	TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3,
+				tps65217_pmic_dcdc_ops, 64),
+	TPS65217_REGULATOR("LDO1", TPS65217_LDO_1,
+				tps65217_pmic_ldo1_ops, 16),
+	TPS65217_REGULATOR("LDO2", TPS65217_LDO_2,
+				tps65217_pmic_ldo234_ops, 64),
+	TPS65217_REGULATOR("LDO3", TPS65217_LDO_3,
+				tps65217_pmic_ldo234_ops, 32),
+	TPS65217_REGULATOR("LDO4", TPS65217_LDO_4,
+				tps65217_pmic_ldo234_ops, 32),
+};
+
+static int __devinit tps65217_regulator_probe(struct platform_device *pdev)
+{
+	struct regulator_dev *rdev;
+	struct tps65217 *tps;
+	struct tps_info *info = &tps65217_pmic_regs[pdev->id];
+
+	/* Already set by core driver */
+	tps = dev_to_tps65217(pdev->dev.parent);
+	tps->info[pdev->id] = info;
+
+	rdev = regulator_register(&regulators[pdev->id], &pdev->dev,
+				  pdev->dev.platform_data, tps, NULL);
+	if (IS_ERR(rdev))
+		return PTR_ERR(rdev);
+
+	platform_set_drvdata(pdev, rdev);
+
+	return 0;
+}
+
+static int __devexit tps65217_regulator_remove(struct platform_device *pdev)
+{
+	struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	regulator_unregister(rdev);
+
+	return 0;
+}
+
+static struct platform_driver tps65217_regulator_driver = {
+	.driver = {
+		.name = "tps65217-pmic",
+	},
+	.probe = tps65217_regulator_probe,
+	.remove = __devexit_p(tps65217_regulator_remove),
+};
+
+static int __init tps65217_regulator_init(void)
+{
+	return platform_driver_register(&tps65217_regulator_driver);
+}
+subsys_initcall(tps65217_regulator_init);
+
+static void __exit tps65217_regulator_exit(void)
+{
+	platform_driver_unregister(&tps65217_regulator_driver);
+}
+module_exit(tps65217_regulator_exit);
+
+
+MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
+MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
+MODULE_ALIAS("platform:tps65217-pmic");
+MODULE_LICENSE("GPL v2");

drivers/regulator/tps65910-regulator.c

@@ -26,6 +26,9 @@
 #include <linux/mfd/tps65910.h>
 
 #define TPS65910_SUPPLY_STATE_ENABLED	0x1
+#define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 |	\
+			TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 |		\
+			TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
 
 /* supported VIO voltages in milivolts */
 static const u16 VIO_VSEL_table[] = {
@@ -83,8 +86,8 @@ struct tps_info {
 	const char *name;
 	unsigned min_uV;
 	unsigned max_uV;
-	u8 table_len;
-	const u16 *table;
+	u8 n_voltages;
+	const u16 *voltage_table;
 };
 
 static struct tps_info tps65910_regs[] = {
@@ -95,8 +98,8 @@ static struct tps_info tps65910_regs[] = {
 		.name = "VIO",
 		.min_uV = 1500000,
 		.max_uV = 3300000,
-		.table_len = ARRAY_SIZE(VIO_VSEL_table),
-		.table = VIO_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
+		.voltage_table = VIO_VSEL_table,
 	},
 	{
 		.name = "VDD1",
@@ -112,132 +115,179 @@ static struct tps_info tps65910_regs[] = {
 		.name = "VDD3",
 		.min_uV = 5000000,
 		.max_uV = 5000000,
-		.table_len = ARRAY_SIZE(VDD3_VSEL_table),
-		.table = VDD3_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
+		.voltage_table = VDD3_VSEL_table,
 	},
 	{
 		.name = "VDIG1",
 		.min_uV = 1200000,
 		.max_uV = 2700000,
-		.table_len = ARRAY_SIZE(VDIG1_VSEL_table),
-		.table = VDIG1_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
+		.voltage_table = VDIG1_VSEL_table,
 	},
 	{
 		.name = "VDIG2",
 		.min_uV = 1000000,
 		.max_uV = 1800000,
-		.table_len = ARRAY_SIZE(VDIG2_VSEL_table),
-		.table = VDIG2_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
+		.voltage_table = VDIG2_VSEL_table,
 	},
 	{
 		.name = "VPLL",
 		.min_uV = 1000000,
 		.max_uV = 2500000,
-		.table_len = ARRAY_SIZE(VPLL_VSEL_table),
-		.table = VPLL_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
+		.voltage_table = VPLL_VSEL_table,
 	},
 	{
 		.name = "VDAC",
 		.min_uV = 1800000,
 		.max_uV = 2850000,
-		.table_len = ARRAY_SIZE(VDAC_VSEL_table),
-		.table = VDAC_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
+		.voltage_table = VDAC_VSEL_table,
 	},
 	{
 		.name = "VAUX1",
 		.min_uV = 1800000,
 		.max_uV = 2850000,
-		.table_len = ARRAY_SIZE(VAUX1_VSEL_table),
-		.table = VAUX1_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
+		.voltage_table = VAUX1_VSEL_table,
 	},
 	{
 		.name = "VAUX2",
 		.min_uV = 1800000,
 		.max_uV = 3300000,
-		.table_len = ARRAY_SIZE(VAUX2_VSEL_table),
-		.table = VAUX2_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
+		.voltage_table = VAUX2_VSEL_table,
 	},
 	{
 		.name = "VAUX33",
 		.min_uV = 1800000,
 		.max_uV = 3300000,
-		.table_len = ARRAY_SIZE(VAUX33_VSEL_table),
-		.table = VAUX33_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
+		.voltage_table = VAUX33_VSEL_table,
 	},
 	{
 		.name = "VMMC",
 		.min_uV = 1800000,
 		.max_uV = 3300000,
-		.table_len = ARRAY_SIZE(VMMC_VSEL_table),
-		.table = VMMC_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
+		.voltage_table = VMMC_VSEL_table,
 	},
 };
 
 static struct tps_info tps65911_regs[] = {
+	{
+		.name = "VRTC",
+	},
 	{
 		.name = "VIO",
 		.min_uV = 1500000,
 		.max_uV = 3300000,
-		.table_len = ARRAY_SIZE(VIO_VSEL_table),
-		.table = VIO_VSEL_table,
+		.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
+		.voltage_table = VIO_VSEL_table,
 	},
 	{
 		.name = "VDD1",
 		.min_uV = 600000,
 		.max_uV = 4500000,
+		.n_voltages = 73,
 	},
 	{
 		.name = "VDD2",
 		.min_uV = 600000,
 		.max_uV = 4500000,
+		.n_voltages = 73,
 	},
 	{
 		.name = "VDDCTRL",
 		.min_uV = 600000,
 		.max_uV = 1400000,
+		.n_voltages = 65,
 	},
 	{
 		.name = "LDO1",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 47,
 	},
 	{
 		.name = "LDO2",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 47,
 	},
 	{
 		.name = "LDO3",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 24,
 	},
 	{
 		.name = "LDO4",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 47,
 	},
 	{
 		.name = "LDO5",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 24,
 	},
 	{
 		.name = "LDO6",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 24,
 	},
 	{
 		.name = "LDO7",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 24,
 	},
 	{
 		.name = "LDO8",
 		.min_uV = 1000000,
 		.max_uV = 3300000,
+		.n_voltages = 24,
 	},
 };
 
+#define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
+static unsigned int tps65910_ext_sleep_control[] = {
+	0,
+	EXT_CONTROL_REG_BITS(VIO,    1, 0),
+	EXT_CONTROL_REG_BITS(VDD1,   1, 1),
+	EXT_CONTROL_REG_BITS(VDD2,   1, 2),
+	EXT_CONTROL_REG_BITS(VDD3,   1, 3),
+	EXT_CONTROL_REG_BITS(VDIG1,  0, 1),
+	EXT_CONTROL_REG_BITS(VDIG2,  0, 2),
+	EXT_CONTROL_REG_BITS(VPLL,   0, 6),
+	EXT_CONTROL_REG_BITS(VDAC,   0, 7),
+	EXT_CONTROL_REG_BITS(VAUX1,  0, 3),
+	EXT_CONTROL_REG_BITS(VAUX2,  0, 4),
+	EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
+	EXT_CONTROL_REG_BITS(VMMC,   0, 0),
+};
+
+static unsigned int tps65911_ext_sleep_control[] = {
+	0,
+	EXT_CONTROL_REG_BITS(VIO,     1, 0),
+	EXT_CONTROL_REG_BITS(VDD1,    1, 1),
+	EXT_CONTROL_REG_BITS(VDD2,    1, 2),
+	EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
+	EXT_CONTROL_REG_BITS(LDO1,    0, 1),
+	EXT_CONTROL_REG_BITS(LDO2,    0, 2),
+	EXT_CONTROL_REG_BITS(LDO3,    0, 7),
+	EXT_CONTROL_REG_BITS(LDO4,    0, 6),
+	EXT_CONTROL_REG_BITS(LDO5,    0, 3),
+	EXT_CONTROL_REG_BITS(LDO6,    0, 0),
+	EXT_CONTROL_REG_BITS(LDO7,    0, 5),
+	EXT_CONTROL_REG_BITS(LDO8,    0, 4),
+};
+
 struct tps65910_reg {
 	struct regulator_desc *desc;
 	struct tps65910 *mfd;
@@ -247,6 +297,8 @@ struct tps65910_reg {
 	int num_regulators;
 	int mode;
 	int  (*get_ctrl_reg)(int);
+	unsigned int *ext_sleep_control;
+	unsigned int board_ext_control[TPS65910_NUM_REGS];
 };
 
 static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
@@ -572,7 +624,7 @@ static int tps65910_get_voltage(struct regulator_dev *dev)
 		return -EINVAL;
 	}
 
-	voltage = pmic->info[id]->table[value] * 1000;
+	voltage = pmic->info[id]->voltage_table[value] * 1000;
 
 	return voltage;
 }
@@ -622,7 +674,7 @@ static int tps65911_get_voltage(struct regulator_dev *dev)
 		step_mv = 100;
 		break;
 	case TPS65910_REG_VIO:
-		return pmic->info[id]->table[value] * 1000;
+		return pmic->info[id]->voltage_table[value] * 1000;
 		break;
 	default:
 		return -EINVAL;
@@ -756,10 +808,10 @@ static int tps65910_list_voltage(struct regulator_dev *dev,
 	if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC)
 		return -EINVAL;
 
-	if (selector >= pmic->info[id]->table_len)
+	if (selector >= pmic->info[id]->n_voltages)
 		return -EINVAL;
 	else
-		voltage = pmic->info[id]->table[selector] * 1000;
+		voltage = pmic->info[id]->voltage_table[selector] * 1000;
 
 	return voltage;
 }
@@ -795,7 +847,7 @@ static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
 		step_mv = 100;
 		break;
 	case TPS65910_REG_VIO:
-		return pmic->info[id]->table[selector] * 1000;
+		return pmic->info[id]->voltage_table[selector] * 1000;
 	default:
 		return -EINVAL;
 	}
@@ -847,6 +899,131 @@ static struct regulator_ops tps65911_ops = {
 	.list_voltage		= tps65911_list_voltage,
 };
 
+static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
+		int id, int ext_sleep_config)
+{
+	struct tps65910 *mfd = pmic->mfd;
+	u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
+	u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
+	int ret;
+
+	/*
+	 * Regulator can not be control from multiple external input EN1, EN2
+	 * and EN3 together.
+	 */
+	if (ext_sleep_config & EXT_SLEEP_CONTROL) {
+		int en_count;
+		en_count = ((ext_sleep_config &
+				TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
+		en_count += ((ext_sleep_config &
+				TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
+		en_count += ((ext_sleep_config &
+				TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
+		if (en_count > 1) {
+			dev_err(mfd->dev,
+				"External sleep control flag is not proper\n");
+			return -EINVAL;
+		}
+	}
+
+	pmic->board_ext_control[id] = ext_sleep_config;
+
+	/* External EN1 control */
+	if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
+		ret = tps65910_set_bits(mfd,
+				TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
+	else
+		ret = tps65910_clear_bits(mfd,
+				TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
+	if (ret < 0) {
+		dev_err(mfd->dev,
+			"Error in configuring external control EN1\n");
+		return ret;
+	}
+
+	/* External EN2 control */
+	if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
+		ret = tps65910_set_bits(mfd,
+				TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
+	else
+		ret = tps65910_clear_bits(mfd,
+				TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
+	if (ret < 0) {
+		dev_err(mfd->dev,
+			"Error in configuring external control EN2\n");
+		return ret;
+	}
+
+	/* External EN3 control for TPS65910 LDO only */
+	if ((tps65910_chip_id(mfd) == TPS65910) &&
+			(id >= TPS65910_REG_VDIG1)) {
+		if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
+			ret = tps65910_set_bits(mfd,
+				TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
+		else
+			ret = tps65910_clear_bits(mfd,
+				TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
+		if (ret < 0) {
+			dev_err(mfd->dev,
+				"Error in configuring external control EN3\n");
+			return ret;
+		}
+	}
+
+	/* Return if no external control is selected */
+	if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
+		/* Clear all sleep controls */
+		ret = tps65910_clear_bits(mfd,
+			TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
+		if (!ret)
+			ret = tps65910_clear_bits(mfd,
+				TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
+		if (ret < 0)
+			dev_err(mfd->dev,
+				"Error in configuring SLEEP register\n");
+		return ret;
+	}
+
+	/*
+	 * For regulator that has separate operational and sleep register make
+	 * sure that operational is used and clear sleep register to turn
+	 * regulator off when external control is inactive
+	 */
+	if ((id == TPS65910_REG_VDD1) ||
+		(id == TPS65910_REG_VDD2) ||
+			((id == TPS65911_REG_VDDCTRL) &&
+				(tps65910_chip_id(mfd) == TPS65911))) {
+		int op_reg_add = pmic->get_ctrl_reg(id) + 1;
+		int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
+		int opvsel = tps65910_reg_read(pmic, op_reg_add);
+		int srvsel = tps65910_reg_read(pmic, sr_reg_add);
+		if (opvsel & VDD1_OP_CMD_MASK) {
+			u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
+			ret = tps65910_reg_write(pmic, op_reg_add, reg_val);
+			if (ret < 0) {
+				dev_err(mfd->dev,
+					"Error in configuring op register\n");
+				return ret;
+			}
+		}
+		ret = tps65910_reg_write(pmic, sr_reg_add, 0);
+		if (ret < 0) {
+			dev_err(mfd->dev, "Error in settting sr register\n");
+			return ret;
+		}
+	}
+
+	ret = tps65910_clear_bits(mfd,
+			TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
+	if (!ret)
+		ret = tps65910_set_bits(mfd,
+			TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
+	if (ret < 0)
+		dev_err(mfd->dev,
+			"Error in configuring SLEEP register\n");
+	return ret;
+}
+
 static __devinit int tps65910_probe(struct platform_device *pdev)
 {
 	struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
@@ -877,11 +1054,13 @@ static __devinit int tps65910_probe(struct platform_device *pdev)
 	case TPS65910:
 		pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
 		pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
+		pmic->ext_sleep_control = tps65910_ext_sleep_control;
 		info = tps65910_regs;
 		break;
 	case TPS65911:
 		pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
 		pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
+		pmic->ext_sleep_control = tps65911_ext_sleep_control;
 		info = tps65911_regs;
 		break;
 	default:
@@ -926,7 +1105,7 @@ static __devinit int tps65910_probe(struct platform_device *pdev)
 
 		pmic->desc[i].name = info->name;
 		pmic->desc[i].id = i;
-		pmic->desc[i].n_voltages = info->table_len;
+		pmic->desc[i].n_voltages = info->n_voltages;
 
 		if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
 			pmic->desc[i].ops = &tps65910_ops_dcdc;
@@ -944,6 +1123,16 @@ static __devinit int tps65910_probe(struct platform_device *pdev)
 				pmic->desc[i].ops = &tps65911_ops;
 		}
 
+		err = tps65910_set_ext_sleep_config(pmic, i,
+				pmic_plat_data->regulator_ext_sleep_control[i]);
+		/*
+		 * Failing on regulator for configuring externally control
+		 * is not a serious issue, just throw warning.
+		 */
+		if (err < 0)
+			dev_warn(tps65910->dev,
+				"Failed to initialise ext control config\n");
+
 		pmic->desc[i].type = REGULATOR_VOLTAGE;
 		pmic->desc[i].owner = THIS_MODULE;
 
@@ -990,6 +1179,36 @@ static int __devexit tps65910_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void tps65910_shutdown(struct platform_device *pdev)
+{
+	struct tps65910_reg *pmic = platform_get_drvdata(pdev);
+	int i;
+
+	/*
+	 * Before bootloader jumps to kernel, it makes sure that required
+	 * external control signals are in desired state so that given rails
+	 * can be configure accordingly.
+	 * If rails are configured to be controlled from external control
+	 * then before shutting down/rebooting the system, the external
+	 * control configuration need to be remove from the rails so that
+	 * its output will be available as per register programming even
+	 * if external controls are removed. This is require when the POR
+	 * value of the control signals are not in active state and before
+	 * bootloader initializes it, the system requires the rail output
+	 * to be active for booting.
+	 */
+	for (i = 0; i < pmic->num_regulators; i++) {
+		int err;
+		if (!pmic->rdev[i])
+			continue;
+
+		err = tps65910_set_ext_sleep_config(pmic, i, 0);
+		if (err < 0)
+			dev_err(&pdev->dev,
+				"Error in clearing external control\n");
+	}
+}
+
 static struct platform_driver tps65910_driver = {
 	.driver = {
 		.name = "tps65910-pmic",
@@ -997,6 +1216,7 @@ static struct platform_driver tps65910_driver = {
 	},
 	.probe = tps65910_probe,
 	.remove = __devexit_p(tps65910_remove),
+	.shutdown = tps65910_shutdown,
 };
 
 static int __init tps65910_init(void)

drivers/regulator/wm8350-regulator.c

@@ -1544,7 +1544,7 @@ int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink,
 		return -ENOMEM;
 	}
 
-	led->isink_consumer.dev = &pdev->dev;
+	led->isink_consumer.dev_name = dev_name(&pdev->dev);
 	led->isink_consumer.supply = "led_isink";
 	led->isink_init.num_consumer_supplies = 1;
 	led->isink_init.consumer_supplies = &led->isink_consumer;
@@ -1559,7 +1559,7 @@ int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink,
 		return ret;
 	}
 
-	led->dcdc_consumer.dev = &pdev->dev;
+	led->dcdc_consumer.dev_name = dev_name(&pdev->dev);
 	led->dcdc_consumer.supply = "led_vcc";
 	led->dcdc_init.num_consumer_supplies = 1;
 	led->dcdc_init.consumer_supplies = &led->dcdc_consumer;

include/linux/mfd/tps65910.h

@@ -768,6 +768,13 @@
 /* Max number of TPS65910/11 regulators */
 #define TPS65910_NUM_REGS				13
 
+/* External sleep controls through EN1/EN2/EN3 inputs*/
+#define TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1		0x1
+#define TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2		0x2
+#define TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3		0x4
+/* TPS65911 names the EN3 signal as SLEEP */
+#define TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP		0x4
+
 /**
  * struct tps65910_board
  * Board platform data may be used to initialize regulators.
@@ -779,6 +786,7 @@ struct tps65910_board {
 	int irq_base;
 	int vmbch_threshold;
 	int vmbch2_threshold;
+	unsigned long regulator_ext_sleep_control[TPS65910_NUM_REGS];
 	struct regulator_init_data *tps65910_pmic_init_data[TPS65910_NUM_REGS];
 };
 

include/linux/regulator/tps62360.h

+/*
+ * tps62360.h -- TI tps62360
+ *
+ * Interface for regulator driver for TI TPS62360 Processor core supply
+ *
+ * Copyright (C) 2012 NVIDIA Corporation
+
+ * Author: Laxman Dewangan <ldewangan@nvidia.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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA	02110-1301, USA.
+ *
+ */
+
+#ifndef __LINUX_REGULATOR_TPS62360_H
+#define __LINUX_REGULATOR_TPS62360_H
+
+#include <linux/regulator/machine.h>
+
+/*
+ * struct tps62360_regulator_platform_data - tps62360 regulator platform data.
+ *
+ * @reg_init_data: The regulator init data.
+ * @en_force_pwm: Enable force pwm or not.
+ * @en_discharge: Enable discharge the output capacitor via internal
+ *                register.
+ * @en_internal_pulldn: internal pull down enable or not.
+ * @vsel0_gpio: Gpio number for vsel0. It should be -1 if this is tied with
+ *              fixed logic.
+ * @vsel1_gpio: Gpio number for vsel1. It should be -1 if this is tied with
+ *              fixed logic.
+ * @vsel0_def_state: Default state of vsel0. 1 if it is high else 0.
+ * @vsel1_def_state: Default state of vsel1. 1 if it is high else 0.
+ */
+struct tps62360_regulator_platform_data {
+	struct regulator_init_data reg_init_data;
+	bool en_force_pwm;
+	bool en_discharge;
+	bool en_internal_pulldn;
+	int vsel0_gpio;
+	int vsel1_gpio;
+	int vsel0_def_state;
+	int vsel1_def_state;
+};
+
+#endif /* __LINUX_REGULATOR_TPS62360_H */