3 files changed, 109 insertions, 38 deletions

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 52e8c55ff314..a84118911ced 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -448,23 +448,24 @@ enum rpm_request {
         RPM_REQ_RESUME,
 };
 
+struct wakeup_source;
+
 struct dev_pm_info {
         pm_message_t            power_state;
         unsigned int            can_wakeup:1;
-        unsigned int            should_wakeup:1;
         unsigned                async_suspend:1;
         enum dpm_state          status;         /* Owned by the PM core */
+        spinlock_t              lock;
 #ifdef CONFIG_PM_SLEEP
         struct list_head        entry;
         struct completion       completion;
-        unsigned long           wakeup_count;
+        struct wakeup_source    *wakeup;
 #endif
 #ifdef CONFIG_PM_RUNTIME
         struct timer_list       suspend_timer;
         unsigned long           timer_expires;
         struct work_struct      work;
         wait_queue_head_t       wait_queue;
-        spinlock_t              lock;
         atomic_t                usage_count;
         atomic_t                child_count;
         unsigned int            disable_depth:3;
@@ -559,11 +560,6 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
         } while (0)
 
 extern void device_pm_wait_for_dev(struct device *sub, struct device *dev);
-
-/* drivers/base/power/wakeup.c */
-extern void pm_wakeup_event(struct device *dev, unsigned int msec);
-extern void pm_stay_awake(struct device *dev);
-extern void pm_relax(void);
 #else /* !CONFIG_PM_SLEEP */
 
 #define device_pm_lock() do {} while (0)
@@ -577,10 +573,6 @@ static inline int dpm_suspend_start(pm_message_t state)
 #define suspend_report_result(fn, ret)          do {} while (0)
 
 static inline void device_pm_wait_for_dev(struct device *a, struct device *b) {}
-
-static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {}
-static inline void pm_stay_awake(struct device *dev) {}
-static inline void pm_relax(void) {}
 #endif /* !CONFIG_PM_SLEEP */
 
 /* How to reorder dpm_list after device_move() */
diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h
index 76aca48722ae..9cff00dd6b63 100644
--- a/include/linux/pm_wakeup.h
+++ b/include/linux/pm_wakeup.h
@@ -2,6 +2,7 @@
  *  pm_wakeup.h - Power management wakeup interface
  *
  *  Copyright (C) 2008 Alan Stern
+ *  Copyright (C) 2010 Rafael J. Wysocki, Novell Inc.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -27,19 +28,77 @@
 
 #include <linux/types.h>
 
-#ifdef CONFIG_PM
-
-/* Changes to device_may_wakeup take effect on the next pm state change.
+/**
+ * struct wakeup_source - Representation of wakeup sources
  *
- * By default, most devices should leave wakeup disabled.  The exceptions
- * are devices that everyone expects to be wakeup sources: keyboards,
- * power buttons, possibly network interfaces, etc.
+ * @total_time: Total time this wakeup source has been active.
+ * @max_time: Maximum time this wakeup source has been continuously active.
+ * @last_time: Monotonic clock when the wakeup source's was activated last time.
+ * @event_count: Number of signaled wakeup events.
+ * @active_count: Number of times the wakeup sorce was activated.
+ * @relax_count: Number of times the wakeup sorce was deactivated.
+ * @hit_count: Number of times the wakeup sorce might abort system suspend.
+ * @active: Status of the wakeup source.
  */
-static inline void device_init_wakeup(struct device *dev, bool val)
+struct wakeup_source {
+        char                    *name;
+        struct list_head        entry;
+        spinlock_t              lock;
+        struct timer_list       timer;
+        unsigned long           timer_expires;
+        ktime_t total_time;
+        ktime_t max_time;
+        ktime_t last_time;
+        unsigned long           event_count;
+        unsigned long           active_count;
+        unsigned long           relax_count;
+        unsigned long           hit_count;
+        unsigned int            active:1;
+};
+
+#ifdef CONFIG_PM_SLEEP
+
+/*
+ * Changes to device_may_wakeup take effect on the next pm state change.
+ */
+
+static inline void device_set_wakeup_capable(struct device *dev, bool capable)
+{
+        dev->power.can_wakeup = capable;
+}
+
+static inline bool device_can_wakeup(struct device *dev)
+{
+        return dev->power.can_wakeup;
+}
+
+
+
+static inline bool device_may_wakeup(struct device *dev)
 {
-        dev->power.can_wakeup = dev->power.should_wakeup = val;
+        return dev->power.can_wakeup && !!dev->power.wakeup;
 }
 
+/* drivers/base/power/wakeup.c */
+extern struct wakeup_source *wakeup_source_create(const char *name);
+extern void wakeup_source_destroy(struct wakeup_source *ws);
+extern void wakeup_source_add(struct wakeup_source *ws);
+extern void wakeup_source_remove(struct wakeup_source *ws);
+extern struct wakeup_source *wakeup_source_register(const char *name);
+extern void wakeup_source_unregister(struct wakeup_source *ws);
+extern int device_wakeup_enable(struct device *dev);
+extern int device_wakeup_disable(struct device *dev);
+extern int device_init_wakeup(struct device *dev, bool val);
+extern int device_set_wakeup_enable(struct device *dev, bool enable);
+extern void __pm_stay_awake(struct wakeup_source *ws);
+extern void pm_stay_awake(struct device *dev);
+extern void __pm_relax(struct wakeup_source *ws);
+extern void pm_relax(struct device *dev);
+extern void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec);
+extern void pm_wakeup_event(struct device *dev, unsigned int msec);
+
+#else /* !CONFIG_PM_SLEEP */
+
 static inline void device_set_wakeup_capable(struct device *dev, bool capable)
 {
         dev->power.can_wakeup = capable;
@@ -50,43 +109,63 @@ static inline bool device_can_wakeup(struct device *dev)
         return dev->power.can_wakeup;
 }
 
-static inline void device_set_wakeup_enable(struct device *dev, bool enable)
+static inline bool device_may_wakeup(struct device *dev)
 {
-        dev->power.should_wakeup = enable;
+        return false;
 }
 
-static inline bool device_may_wakeup(struct device *dev)
+static inline struct wakeup_source *wakeup_source_create(const char *name)
 {
-        return dev->power.can_wakeup && dev->power.should_wakeup;
+        return NULL;
 }
 
-#else /* !CONFIG_PM */
+static inline void wakeup_source_destroy(struct wakeup_source *ws) {}
+
+static inline void wakeup_source_add(struct wakeup_source *ws) {}
 
-/* For some reason the following routines work even without CONFIG_PM */
-static inline void device_init_wakeup(struct device *dev, bool val)
+static inline void wakeup_source_remove(struct wakeup_source *ws) {}
+
+static inline struct wakeup_source *wakeup_source_register(const char *name)
 {
-        dev->power.can_wakeup = val;
+        return NULL;
 }
 
-static inline void device_set_wakeup_capable(struct device *dev, bool capable)
+static inline void wakeup_source_unregister(struct wakeup_source *ws) {}
+
+static inline int device_wakeup_enable(struct device *dev)
 {
-        dev->power.can_wakeup = capable;
+        return -EINVAL;
 }
 
-static inline bool device_can_wakeup(struct device *dev)
+static inline int device_wakeup_disable(struct device *dev)
 {
-        return dev->power.can_wakeup;
+        return 0;
 }
 
-static inline void device_set_wakeup_enable(struct device *dev, bool enable)
+static inline int device_init_wakeup(struct device *dev, bool val)
 {
+        dev->power.can_wakeup = val;
+        return val ? -EINVAL : 0;
 }
 
-static inline bool device_may_wakeup(struct device *dev)
+
+static inline int device_set_wakeup_enable(struct device *dev, bool enable)
 {
-        return false;
+        return -EINVAL;
 }
 
-#endif /* !CONFIG_PM */
+static inline void __pm_stay_awake(struct wakeup_source *ws) {}
+
+static inline void pm_stay_awake(struct device *dev) {}
+
+static inline void __pm_relax(struct wakeup_source *ws) {}
+
+static inline void pm_relax(struct device *dev) {}
+
+static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec) {}
+
+static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {}
+
+#endif /* !CONFIG_PM_SLEEP */
 
 #endif /* _LINUX_PM_WAKEUP_H */
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 4af270ec2204..6b1712c51102 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -293,8 +293,8 @@ extern int unregister_pm_notifier(struct notifier_block *nb);
 extern bool events_check_enabled;
 
 extern bool pm_check_wakeup_events(void);
-extern bool pm_get_wakeup_count(unsigned long *count);
-extern bool pm_save_wakeup_count(unsigned long count);
+extern bool pm_get_wakeup_count(unsigned int *count);
+extern bool pm_save_wakeup_count(unsigned int count);
 #else /* !CONFIG_PM_SLEEP */
 
 static inline int register_pm_notifier(struct notifier_block *nb)