1 files changed, 30 insertions, 22 deletions

diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 583baf22cad2..7408af843b8a 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -23,57 +23,62 @@
 struct module;
 
 struct cpuidle_device;
+struct cpuidle_driver;
 
 
 /****************************
  * CPUIDLE DEVICE INTERFACE *
  ****************************/
 
+struct cpuidle_state_usage {
+        void            *driver_data;
+
+        unsigned long long      usage;
+        unsigned long long      time; /* in US */
+};
+
 struct cpuidle_state {
         char            name[CPUIDLE_NAME_LEN];
         char            desc[CPUIDLE_DESC_LEN];
-        void            *driver_data;
 
         unsigned int    flags;
         unsigned int    exit_latency; /* in US */
         unsigned int    power_usage; /* in mW */
         unsigned int    target_residency; /* in US */
 
-        unsigned long long      usage;
-        unsigned long long      time; /* in US */
-
         int (*enter)    (struct cpuidle_device *dev,
-                         struct cpuidle_state *state);
+                        struct cpuidle_driver *drv,
+                        int index);
 };
 
 /* Idle State Flags */
 #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */
-#define CPUIDLE_FLAG_IGNORE     (0x100) /* ignore during this idle period */
 
 #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000)
 
 /**
  * cpuidle_get_statedata - retrieves private driver state data
- * @state: the state
+ * @st_usage: the state usage statistics
  */
-static inline void * cpuidle_get_statedata(struct cpuidle_state *state)
+static inline void *cpuidle_get_statedata(struct cpuidle_state_usage *st_usage)
 {
-        return state->driver_data;
+        return st_usage->driver_data;
 }
 
 /**
  * cpuidle_set_statedata - stores private driver state data
- * @state: the state
+ * @st_usage: the state usage statistics
  * @data: the private data
  */
 static inline void
-cpuidle_set_statedata(struct cpuidle_state *state, void *data)
+cpuidle_set_statedata(struct cpuidle_state_usage *st_usage, void *data)
 {
-        state->driver_data = data;
+        st_usage->driver_data = data;
 }
 
 struct cpuidle_state_kobj {
         struct cpuidle_state *state;
+        struct cpuidle_state_usage *state_usage;
         struct completion kobj_unregister;
         struct kobject kobj;
 };
@@ -81,22 +86,17 @@ struct cpuidle_state_kobj {
 struct cpuidle_device {
         unsigned int            registered:1;
         unsigned int            enabled:1;
-        unsigned int            power_specified:1;
         unsigned int            cpu;
 
         int                     last_residency;
         int                     state_count;
-        struct cpuidle_state    states[CPUIDLE_STATE_MAX];
+        struct cpuidle_state_usage      states_usage[CPUIDLE_STATE_MAX];
         struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX];
-        struct cpuidle_state    *last_state;
 
         struct list_head        device_list;
         struct kobject          kobj;
         struct completion       kobj_unregister;
         void                    *governor_data;
-        struct cpuidle_state    *safe_state;
-
-        int (*prepare)          (struct cpuidle_device *dev);
 };
 
 DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices);
@@ -120,6 +120,11 @@ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev)
 struct cpuidle_driver {
         char                    name[CPUIDLE_NAME_LEN];
         struct module           *owner;
+
+        unsigned int            power_specified:1;
+        struct cpuidle_state    states[CPUIDLE_STATE_MAX];
+        int                     state_count;
+        int                     safe_state_index;
 };
 
 #ifdef CONFIG_CPU_IDLE
@@ -166,11 +171,14 @@ struct cpuidle_governor {
         struct list_head        governor_list;
         unsigned int            rating;
 
-        int  (*enable)          (struct cpuidle_device *dev);
-        void (*disable)         (struct cpuidle_device *dev);
+        int  (*enable)          (struct cpuidle_driver *drv,
+                                        struct cpuidle_device *dev);
+        void (*disable)         (struct cpuidle_driver *drv,
+                                        struct cpuidle_device *dev);
 
-        int  (*select)          (struct cpuidle_device *dev);
-        void (*reflect)         (struct cpuidle_device *dev);
+        int  (*select)          (struct cpuidle_driver *drv,
+                                        struct cpuidle_device *dev);
+        void (*reflect)         (struct cpuidle_device *dev, int index);
 
         struct module           *owner;
 };