1 files changed, 33 insertions, 87 deletions

diff --git a/drivers/regulator/isl6271a-regulator.c b/drivers/regulator/isl6271a-regulator.c
index b8cc6389a54..6e5da95fa02 100644
--- a/drivers/regulator/isl6271a-regulator.c
+++ b/drivers/regulator/isl6271a-regulator.c
@@ -22,7 +22,6 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/i2c.h>
-#include <linux/delay.h>
 #include <linux/slab.h>
 
 #define	ISL6271A_VOLTAGE_MIN	850000
@@ -36,51 +35,30 @@ struct isl_pmic {
 	struct mutex		mtx;
 };
 
-static int isl6271a_get_voltage(struct regulator_dev *dev)
+static int isl6271a_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct isl_pmic *pmic = rdev_get_drvdata(dev);
-	int idx, data;
+	int idx;
 
 	mutex_lock(&pmic->mtx);
 
 	idx = i2c_smbus_read_byte(pmic->client);
-	if (idx < 0) {
+	if (idx < 0)
 		dev_err(&pmic->client->dev, "Error getting voltage\n");
-		data = idx;
-		goto out;
-	}
-
-	/* Convert the data from chip to microvolts */
-	data = ISL6271A_VOLTAGE_MIN + (ISL6271A_VOLTAGE_STEP * (idx & 0xf));
 
-out:
 	mutex_unlock(&pmic->mtx);
-	return data;
+	return idx;
 }
 
-static int isl6271a_set_voltage(struct regulator_dev *dev, int minuV, int maxuV)
+static int isl6271a_set_voltage_sel(struct regulator_dev *dev,
+				    unsigned selector)
 {
 	struct isl_pmic *pmic = rdev_get_drvdata(dev);
-	int vsel, err, data;
-
-	if (minuV < ISL6271A_VOLTAGE_MIN || minuV > ISL6271A_VOLTAGE_MAX)
-		return -EINVAL;
-	if (maxuV < ISL6271A_VOLTAGE_MIN || maxuV > ISL6271A_VOLTAGE_MAX)
-		return -EINVAL;
-
-	/* Align to 50000 mV */
-	vsel = minuV - (minuV % ISL6271A_VOLTAGE_STEP);
-
-	/* If the result fell out of [minuV,maxuV] range, put it back */
-	if (vsel < minuV)
-		vsel += ISL6271A_VOLTAGE_STEP;
-
-	/* Convert the microvolts to data for the chip */
-	data = (vsel - ISL6271A_VOLTAGE_MIN) / ISL6271A_VOLTAGE_STEP;
+	int err;
 
 	mutex_lock(&pmic->mtx);
 
-	err = i2c_smbus_write_byte(pmic->client, data);
+	err = i2c_smbus_write_byte(pmic->client, selector);
 	if (err < 0)
 		dev_err(&pmic->client->dev, "Error setting voltage\n");
 
@@ -88,35 +66,18 @@ static int isl6271a_set_voltage(struct regulator_dev *dev, int minuV, int maxuV)
 	return err;
 }
 
-static int isl6271a_list_voltage(struct regulator_dev *dev, unsigned selector)
-{
-	return ISL6271A_VOLTAGE_MIN + (ISL6271A_VOLTAGE_STEP * selector);
-}
-
 static struct regulator_ops isl_core_ops = {
-	.get_voltage	= isl6271a_get_voltage,
-	.set_voltage	= isl6271a_set_voltage,
-	.list_voltage	= isl6271a_list_voltage,
+	.get_voltage_sel = isl6271a_get_voltage_sel,
+	.set_voltage_sel = isl6271a_set_voltage_sel,
+	.list_voltage	= regulator_list_voltage_linear,
+	.map_voltage	= regulator_map_voltage_linear,
 };
 
-static int isl6271a_get_fixed_voltage(struct regulator_dev *dev)
-{
-	int id = rdev_get_id(dev);
-	return (id == 1) ? 1100000 : 1300000;
-}
-
-static int isl6271a_list_fixed_voltage(struct regulator_dev *dev, unsigned selector)
-{
-	int id = rdev_get_id(dev);
-	return (id == 1) ? 1100000 : 1300000;
-}
-
 static struct regulator_ops isl_fixed_ops = {
-	.get_voltage	= isl6271a_get_fixed_voltage,
-	.list_voltage	= isl6271a_list_fixed_voltage,
+	.list_voltage	= regulator_list_voltage_linear,
 };
 
-static struct regulator_desc isl_rd[] = {
+static const struct regulator_desc isl_rd[] = {
 	{
 		.name		= "Core Buck",
 		.id		= 0,
@@ -124,6 +85,8 @@ static struct regulator_desc isl_rd[] = {
 		.ops		= &isl_core_ops,
 		.type		= REGULATOR_VOLTAGE,
 		.owner		= THIS_MODULE,
+		.min_uV		= ISL6271A_VOLTAGE_MIN,
+		.uV_step	= ISL6271A_VOLTAGE_STEP,
 	}, {
 		.name		= "LDO1",
 		.id		= 1,
@@ -131,6 +94,7 @@ static struct regulator_desc isl_rd[] = {
 		.ops		= &isl_fixed_ops,
 		.type		= REGULATOR_VOLTAGE,
 		.owner		= THIS_MODULE,
+		.min_uV		= 1100000,
 	}, {
 		.name		= "LDO2",
 		.id		= 2,
@@ -138,25 +102,22 @@ static struct regulator_desc isl_rd[] = {
 		.ops		= &isl_fixed_ops,
 		.type		= REGULATOR_VOLTAGE,
 		.owner		= THIS_MODULE,
+		.min_uV		= 1300000,
 	},
 };
 
-static int __devinit isl6271a_probe(struct i2c_client *i2c,
+static int isl6271a_probe(struct i2c_client *i2c,
 				     const struct i2c_device_id *id)
 {
-	struct regulator_init_data *init_data	= i2c->dev.platform_data;
+	struct regulator_config config = { };
+	struct regulator_init_data *init_data	= dev_get_platdata(&i2c->dev);
 	struct isl_pmic *pmic;
-	int err, i;
+	int i;
 
 	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -EIO;
 
-	if (!init_data) {
-		dev_err(&i2c->dev, "no platform data supplied\n");
-		return -EIO;
-	}
-
-	pmic = kzalloc(sizeof(struct isl_pmic), GFP_KERNEL);
+	pmic = devm_kzalloc(&i2c->dev, sizeof(struct isl_pmic), GFP_KERNEL);
 	if (!pmic)
 		return -ENOMEM;
 
@@ -165,38 +126,24 @@ static int __devinit isl6271a_probe(struct i2c_client *i2c,
 	mutex_init(&pmic->mtx);
 
 	for (i = 0; i < 3; i++) {
-		pmic->rdev[i] = regulator_register(&isl_rd[i], &i2c->dev,
-						init_data, pmic);
+		config.dev = &i2c->dev;
+		if (i == 0)
+			config.init_data = init_data;
+		else
+			config.init_data = NULL;
+		config.driver_data = pmic;
+
+		pmic->rdev[i] = devm_regulator_register(&i2c->dev, &isl_rd[i],
+							&config);
 		if (IS_ERR(pmic->rdev[i])) {
 			dev_err(&i2c->dev, "failed to register %s\n", id->name);
-			err = PTR_ERR(pmic->rdev);
-			goto error;
+			return PTR_ERR(pmic->rdev[i]);
 		}
 	}
 
 	i2c_set_clientdata(i2c, pmic);
 
 	return 0;
-
-error:
-	while (--i >= 0)
-		regulator_unregister(pmic->rdev[i]);
-
-	kfree(pmic);
-	return err;
-}
-
-static int __devexit isl6271a_remove(struct i2c_client *i2c)
-{
-	struct isl_pmic *pmic = i2c_get_clientdata(i2c);
-	int i;
-
-	for (i = 0; i < 3; i++)
-		regulator_unregister(pmic->rdev[i]);
-
-	kfree(pmic);
-
-	return 0;
 }
 
 static const struct i2c_device_id isl6271a_id[] = {
@@ -212,7 +159,6 @@ static struct i2c_driver isl6271a_i2c_driver = {
 		.owner = THIS_MODULE,
 	},
 	.probe = isl6271a_probe,
-	.remove = __devexit_p(isl6271a_remove),
 	.id_table = isl6271a_id,
 };