regulator: extend the fixed dummy voltage regulator to accept voltage

Trivially extend the regulator_register_always_on() helper function to be
even more useful by adding a voltage parameter to it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/fixed-helper.c

@@ -24,9 +24,10 @@ static void regulator_fixed_release(struct device *dev)
  * @name: name to be used for the regulator
  * @supplies: consumers for this regulator
  * @num_supplies: number of consumers
+ * @uv: voltage in microvolts
  */
 struct platform_device *regulator_register_always_on(int id, const char *name,
-		struct regulator_consumer_supply *supplies, int num_supplies)
+	struct regulator_consumer_supply *supplies, int num_supplies, int uv)
 {
 	struct fixed_regulator_data *data;
 
@@ -40,7 +41,7 @@ struct platform_device *regulator_register_always_on(int id, const char *name,
 		return NULL;
 	}
 
-	data->cfg.microvolts = 0;
+	data->cfg.microvolts = uv;
 	data->cfg.gpio = -EINVAL;
 	data->cfg.enabled_at_boot = 1;
 	data->cfg.init_data = &data->init_data;

include/linux/regulator/fixed.h

@@ -59,16 +59,16 @@ struct regulator_consumer_supply;
 
 #if IS_ENABLED(CONFIG_REGULATOR)
 struct platform_device *regulator_register_always_on(int id, const char *name,
-		struct regulator_consumer_supply *supplies, int num_supplies);
+		struct regulator_consumer_supply *supplies, int num_supplies, int uv);
 #else
 static inline struct platform_device *regulator_register_always_on(int id, const char *name,
-		struct regulator_consumer_supply *supplies, int num_supplies)
+		struct regulator_consumer_supply *supplies, int num_supplies, int uv)
 {
 	return NULL;
 }
 #endif
 
 #define regulator_register_fixed(id, s, ns) regulator_register_always_on(id, \
-						"fixed-dummy", s, ns)
+						"fixed-dummy", s, ns, 0)
 
 #endif