1 files changed, 92 insertions, 62 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index db320e8fa865..67426c0477d3 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -679,24 +679,6 @@ static int drms_uA_update(struct regulator_dev *rdev)
 	    !rdev->desc->ops->set_load)
 		return -EINVAL;
 
-	/* get output voltage */
-	output_uV = _regulator_get_voltage(rdev);
-	if (output_uV <= 0) {
-		rdev_err(rdev, "invalid output voltage found\n");
-		return -EINVAL;
-	}
-
-	/* get input voltage */
-	input_uV = 0;
-	if (rdev->supply)
-		input_uV = regulator_get_voltage(rdev->supply);
-	if (input_uV <= 0)
-		input_uV = rdev->constraints->input_uV;
-	if (input_uV <= 0) {
-		rdev_err(rdev, "invalid input voltage found\n");
-		return -EINVAL;
-	}
-
 	/* calc total requested load */
 	list_for_each_entry(sibling, &rdev->consumer_list, list)
 		current_uA += sibling->uA_load;
@@ -709,6 +691,24 @@ static int drms_uA_update(struct regulator_dev *rdev)
 		if (err < 0)
 			rdev_err(rdev, "failed to set load %d\n", current_uA);
 	} else {
+		/* get output voltage */
+		output_uV = _regulator_get_voltage(rdev);
+		if (output_uV <= 0) {
+			rdev_err(rdev, "invalid output voltage found\n");
+			return -EINVAL;
+		}
+
+		/* get input voltage */
+		input_uV = 0;
+		if (rdev->supply)
+			input_uV = regulator_get_voltage(rdev->supply);
+		if (input_uV <= 0)
+			input_uV = rdev->constraints->input_uV;
+		if (input_uV <= 0) {
+			rdev_err(rdev, "invalid input voltage found\n");
+			return -EINVAL;
+		}
+
 		/* now get the optimum mode for our new total regulator load */
 		mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV,
 							 output_uV, current_uA);
@@ -2743,6 +2743,24 @@ static int _regulator_call_set_voltage_sel(struct regulator_dev *rdev,
 	return ret;
 }
 
+static int _regulator_set_voltage_time(struct regulator_dev *rdev,
+				       int old_uV, int new_uV)
+{
+	unsigned int ramp_delay = 0;
+
+	if (rdev->constraints->ramp_delay)
+		ramp_delay = rdev->constraints->ramp_delay;
+	else if (rdev->desc->ramp_delay)
+		ramp_delay = rdev->desc->ramp_delay;
+
+	if (ramp_delay == 0) {
+		rdev_warn(rdev, "ramp_delay not set\n");
+		return 0;
+	}
+
+	return DIV_ROUND_UP(abs(new_uV - old_uV), ramp_delay);
+}
+
 static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 				     int min_uV, int max_uV)
 {
@@ -2751,6 +2769,8 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 	int best_val = 0;
 	unsigned int selector;
 	int old_selector = -1;
+	const struct regulator_ops *ops = rdev->desc->ops;
+	int old_uV = _regulator_get_voltage(rdev);
 
 	trace_regulator_set_voltage(rdev_get_name(rdev), min_uV, max_uV);
 
@@ -2762,29 +2782,28 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 	 * info to call set_voltage_time_sel().
 	 */
 	if (_regulator_is_enabled(rdev) &&
-	    rdev->desc->ops->set_voltage_time_sel &&
-	    rdev->desc->ops->get_voltage_sel) {
-		old_selector = rdev->desc->ops->get_voltage_sel(rdev);
+	    ops->set_voltage_time_sel && ops->get_voltage_sel) {
+		old_selector = ops->get_voltage_sel(rdev);
 		if (old_selector < 0)
 			return old_selector;
 	}
 
-	if (rdev->desc->ops->set_voltage) {
+	if (ops->set_voltage) {
 		ret = _regulator_call_set_voltage(rdev, min_uV, max_uV,
 						  &selector);
 
 		if (ret >= 0) {
-			if (rdev->desc->ops->list_voltage)
-				best_val = rdev->desc->ops->list_voltage(rdev,
-									 selector);
+			if (ops->list_voltage)
+				best_val = ops->list_voltage(rdev,
+							     selector);
 			else
 				best_val = _regulator_get_voltage(rdev);
 		}
 
-	} else if (rdev->desc->ops->set_voltage_sel) {
+	} else if (ops->set_voltage_sel) {
 		ret = regulator_map_voltage(rdev, min_uV, max_uV);
 		if (ret >= 0) {
-			best_val = rdev->desc->ops->list_voltage(rdev, ret);
+			best_val = ops->list_voltage(rdev, ret);
 			if (min_uV <= best_val && max_uV >= best_val) {
 				selector = ret;
 				if (old_selector == selector)
@@ -2800,34 +2819,50 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 		ret = -EINVAL;
 	}
 
-	/* Call set_voltage_time_sel if successfully obtained old_selector */
-	if (ret == 0 && !rdev->constraints->ramp_disable && old_selector >= 0
-		&& old_selector != selector) {
+	if (ret)
+		goto out;
 
-		delay = rdev->desc->ops->set_voltage_time_sel(rdev,
-						old_selector, selector);
-		if (delay < 0) {
-			rdev_warn(rdev, "set_voltage_time_sel() failed: %d\n",
-				  delay);
-			delay = 0;
+	if (ops->set_voltage_time_sel) {
+		/*
+		 * Call set_voltage_time_sel if successfully obtained
+		 * old_selector
+		 */
+		if (old_selector >= 0 && old_selector != selector)
+			delay = ops->set_voltage_time_sel(rdev, old_selector,
+							  selector);
+	} else {
+		if (old_uV != best_val) {
+			if (ops->set_voltage_time)
+				delay = ops->set_voltage_time(rdev, old_uV,
+							      best_val);
+			else
+				delay = _regulator_set_voltage_time(rdev,
+								    old_uV,
+								    best_val);
 		}
+	}
 
-		/* Insert any necessary delays */
-		if (delay >= 1000) {
-			mdelay(delay / 1000);
-			udelay(delay % 1000);
-		} else if (delay) {
-			udelay(delay);
-		}
+	if (delay < 0) {
+		rdev_warn(rdev, "failed to get delay: %d\n", delay);
+		delay = 0;
 	}
 
-	if (ret == 0 && best_val >= 0) {
+	/* Insert any necessary delays */
+	if (delay >= 1000) {
+		mdelay(delay / 1000);
+		udelay(delay % 1000);
+	} else if (delay) {
+		udelay(delay);
+	}
+
+	if (best_val >= 0) {
 		unsigned long data = best_val;
 
 		_notifier_call_chain(rdev, REGULATOR_EVENT_VOLTAGE_CHANGE,
 				     (void *)data);
 	}
 
+out:
 	trace_regulator_set_voltage_complete(rdev_get_name(rdev), best_val);
 
 	return ret;
@@ -2998,9 +3033,13 @@ int regulator_set_voltage_time(struct regulator *regulator,
 	int voltage;
 	int i;
 
+	if (ops->set_voltage_time)
+		return ops->set_voltage_time(rdev, old_uV, new_uV);
+	else if (!ops->set_voltage_time_sel)
+		return _regulator_set_voltage_time(rdev, old_uV, new_uV);
+
 	/* Currently requires operations to do this */
-	if (!ops->list_voltage || !ops->set_voltage_time_sel
-	    || !rdev->desc->n_voltages)
+	if (!ops->list_voltage || !rdev->desc->n_voltages)
 		return -EINVAL;
 
 	for (i = 0; i < rdev->desc->n_voltages; i++) {
@@ -3039,19 +3078,8 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev,
 				   unsigned int old_selector,
 				   unsigned int new_selector)
 {
-	unsigned int ramp_delay = 0;
 	int old_volt, new_volt;
 
-	if (rdev->constraints->ramp_delay)
-		ramp_delay = rdev->constraints->ramp_delay;
-	else if (rdev->desc->ramp_delay)
-		ramp_delay = rdev->desc->ramp_delay;
-
-	if (ramp_delay == 0) {
-		rdev_warn(rdev, "ramp_delay not set\n");
-		return 0;
-	}
-
 	/* sanity check */
 	if (!rdev->desc->ops->list_voltage)
 		return -EINVAL;
@@ -3059,7 +3087,11 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev,
 	old_volt = rdev->desc->ops->list_voltage(rdev, old_selector);
 	new_volt = rdev->desc->ops->list_voltage(rdev, new_selector);
 
-	return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
+	if (rdev->desc->ops->set_voltage_time)
+		return rdev->desc->ops->set_voltage_time(rdev, old_volt,
+							 new_volt);
+	else
+		return _regulator_set_voltage_time(rdev, old_volt, new_volt);
 }
 EXPORT_SYMBOL_GPL(regulator_set_voltage_time_sel);
 
@@ -3483,10 +3515,8 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
 		consumers[i].consumer = NULL;
 
 	for (i = 0; i < num_consumers; i++) {
-		consumers[i].consumer = _regulator_get(dev,
-						       consumers[i].supply,
-						       false,
-						       !consumers[i].optional);
+		consumers[i].consumer = regulator_get(dev,
+						      consumers[i].supply);
 		if (IS_ERR(consumers[i].consumer)) {
 			ret = PTR_ERR(consumers[i].consumer);
 			dev_err(dev, "Failed to get supply '%s': %d\n",