1 files changed, 22 insertions, 4 deletions

diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index bac64fa390f2..87f5f176d4ef 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -41,7 +41,7 @@ struct regulator;
 #define REGULATOR_CHANGE_DRMS           0x10
 
 /**
- * struct regulator_state - regulator state during low power syatem states
+ * struct regulator_state - regulator state during low power system states
  *
  * This describes a regulators state during a system wide low power state.
  *
@@ -117,25 +117,37 @@ struct regulation_constraints {
         /* mode to set on startup */
         unsigned int initial_mode;
 
-        /* constriant flags */
+        /* constraint flags */
         unsigned always_on:1;   /* regulator never off when system is on */
         unsigned boot_on:1;     /* bootloader/firmware enabled regulator */
-        unsigned apply_uV:1;    /* apply uV constraint iff min == max */
+        unsigned apply_uV:1;    /* apply uV constraint if min == max */
 };
 
 /**
  * struct regulator_consumer_supply - supply -> device mapping
  *
- * This maps a supply name to a device.
+ * This maps a supply name to a device.  Only one of dev or dev_name
+ * can be specified.  Use of dev_name allows support for buses which
+ * make struct device available late such as I2C and is the preferred
+ * form.
  *
  * @dev: Device structure for the consumer.
+ * @dev_name: Result of dev_name() for the consumer.
  * @supply: Name for the supply.
  */
 struct regulator_consumer_supply {
         struct device *dev;     /* consumer */
+        const char *dev_name;   /* dev_name() for consumer */
         const char *supply;     /* consumer supply - e.g. "vcc" */
 };
 
+/* Initialize struct regulator_consumer_supply */
+#define REGULATOR_SUPPLY(_name, _dev_name)                      \
+{                                                               \
+        .supply         = _name,                                \
+        .dev_name       = _dev_name,                            \
+}
+
 /**
  * struct regulator_init_data - regulator platform initialisation data.
  *
@@ -166,6 +178,12 @@ struct regulator_init_data {
 
 int regulator_suspend_prepare(suspend_state_t state);
 
+#ifdef CONFIG_REGULATOR
 void regulator_has_full_constraints(void);
+#else
+static inline void regulator_has_full_constraints(void)
+{
+}
+#endif
 
 #endif