regulator: Consumer load management improvements

Merge series from Douglas Anderson <dianders@chromium.org>:

The main goal of this series is to make a small dent in cleaning up
the way we deal with regulator loads. The idea is to add some extra
functionality to the regulator "bulk" API so that consumers can
specify the load using that.

2 files changed, 40 insertions, 8 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 398c8d6afd47..7150b1d0159e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -4784,22 +4784,26 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
 		consumers[i].consumer = regulator_get(dev,
 						      consumers[i].supply);
 		if (IS_ERR(consumers[i].consumer)) {
-			ret = PTR_ERR(consumers[i].consumer);
 			consumers[i].consumer = NULL;
+			ret = dev_err_probe(dev, PTR_ERR(consumers[i].consumer),
+					    "Failed to get supply '%s'",
+					    consumers[i].supply);
 			goto err;
 		}
+
+		if (consumers[i].init_load_uA > 0) {
+			ret = regulator_set_load(consumers[i].consumer,
+						 consumers[i].init_load_uA);
+			if (ret) {
+				i++;
+				goto err;
+			}
+		}
 	}
 
 	return 0;
 
 err:
-	if (ret != -EPROBE_DEFER)
-		dev_err(dev, "Failed to get supply '%s': %pe\n",
-			consumers[i].supply, ERR_PTR(ret));
-	else
-		dev_dbg(dev, "Failed to get supply '%s', deferring\n",
-			consumers[i].supply);
-
 	while (--i >= 0)
 		regulator_put(consumers[i].consumer);
 
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index 9113233f41cd..32823a87fd40 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -166,6 +166,34 @@ int devm_regulator_bulk_get(struct device *dev, int num_consumers,
 }
 EXPORT_SYMBOL_GPL(devm_regulator_bulk_get);
 
+/**
+ * devm_regulator_bulk_get_const - devm_regulator_bulk_get() w/ const data
+ *
+ * @dev:           device to supply
+ * @num_consumers: number of consumers to register
+ * @in_consumers:  const configuration of consumers
+ * @out_consumers: in_consumers is copied here and this is passed to
+ *		   devm_regulator_bulk_get().
+ *
+ * This is a convenience function to allow bulk regulator configuration
+ * to be stored "static const" in files.
+ *
+ * Return: 0 on success, an errno on failure.
+ */
+int devm_regulator_bulk_get_const(struct device *dev, int num_consumers,
+				  const struct regulator_bulk_data *in_consumers,
+				  struct regulator_bulk_data **out_consumers)
+{
+	*out_consumers = devm_kmemdup(dev, in_consumers,
+				      num_consumers * sizeof(*in_consumers),
+				      GFP_KERNEL);
+	if (*out_consumers == NULL)
+		return -ENOMEM;
+
+	return devm_regulator_bulk_get(dev, num_consumers, *out_consumers);
+}
+EXPORT_SYMBOL_GPL(devm_regulator_bulk_get_const);
+
 static void devm_rdev_release(struct device *dev, void *res)
 {
 	regulator_unregister(*(struct regulator_dev **)res);