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-rw-r--r--include/linux/pm.h26
1 files changed, 25 insertions, 1 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 5cfb07648ec..7897cf500c5 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -219,7 +219,9 @@ typedef struct pm_message {
struct dev_pm_info {
pm_message_t power_state;
+ unsigned can_wakeup:1;
#ifdef CONFIG_PM
+ unsigned should_wakeup:1;
pm_message_t prev_state;
void * saved_state;
atomic_t pm_users;
@@ -236,13 +238,35 @@ extern void device_resume(void);
#ifdef CONFIG_PM
extern int device_suspend(pm_message_t state);
-#else
+
+#define device_set_wakeup_enable(dev,val) \
+ ((dev)->power.should_wakeup = !!(val))
+#define device_may_wakeup(dev) \
+ (device_can_wakeup(dev) && (dev)->power.should_wakeup)
+
+#else /* !CONFIG_PM */
+
static inline int device_suspend(pm_message_t state)
{
return 0;
}
+
+#define device_set_wakeup_enable(dev,val) do{}while(0)
+#define device_may_wakeup(dev) (0)
+
#endif
+/* changes to device_may_wakeup take effect on the next pm state change.
+ * by default, devices should wakeup if they can.
+ */
+#define device_can_wakeup(dev) \
+ ((dev)->power.can_wakeup)
+#define device_init_wakeup(dev,val) \
+ do { \
+ device_can_wakeup(dev) = !!(val); \
+ device_set_wakeup_enable(dev,val); \
+ } while(0)
+
#endif /* __KERNEL__ */
#endif /* _LINUX_PM_H */