Consolidate of_device_is_compatible

[linux-2.6-omap-h63xx.git] / include / linux / suspend.h

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 9d2aa1a12aa02803ab109297b7dd2da00cfd4a62..e8e6da394c921572bae24a3aa7e2574138936951 100644 (file)
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -32,19 +32,55 @@ static inline int pm_prepare_console(void) { return 0; }
 static inline void pm_restore_console(void) {}
 #endif
 
-#if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND)
+/**
+ * struct hibernation_ops - hibernation platform support
+ *
+ * The methods in this structure allow a platform to override the default
+ * mechanism of shutting down the machine during a hibernation transition.
+ *
+ * All three methods must be assigned.
+ *
+ * @prepare: prepare system for hibernation
+ * @enter: shut down system after state has been saved to disk
+ * @finish: finish/clean up after state has been reloaded
+ * @pre_restore: prepare system for the restoration from a hibernation image
+ * @restore_cleanup: clean up after a failing image restoration
+ */
+struct hibernation_ops {
+       int (*prepare)(void);
+       int (*enter)(void);
+       void (*finish)(void);
+       int (*pre_restore)(void);
+       void (*restore_cleanup)(void);
+};
+
+#ifdef CONFIG_PM
+#ifdef CONFIG_SOFTWARE_SUSPEND
 /* kernel/power/snapshot.c */
-extern void __init register_nosave_region(unsigned long, unsigned long);
+extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
+static inline void register_nosave_region(unsigned long b, unsigned long e)
+{
+       __register_nosave_region(b, e, 0);
+}
+static inline void register_nosave_region_late(unsigned long b, unsigned long e)
+{
+       __register_nosave_region(b, e, 1);
+}
 extern int swsusp_page_is_forbidden(struct page *);
 extern void swsusp_set_page_free(struct page *);
 extern void swsusp_unset_page_free(struct page *);
 extern unsigned long get_safe_page(gfp_t gfp_mask);
-#else
-static inline void register_nosave_region(unsigned long b, unsigned long e) {}
+
+extern void hibernation_set_ops(struct hibernation_ops *ops);
+extern int hibernate(void);
+#else /* CONFIG_SOFTWARE_SUSPEND */
 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
 static inline void swsusp_set_page_free(struct page *p) {}
 static inline void swsusp_unset_page_free(struct page *p) {}
-#endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
+
+static inline void hibernation_set_ops(struct hibernation_ops *ops) {}
+static inline int hibernate(void) { return -ENOSYS; }
+#endif /* CONFIG_SOFTWARE_SUSPEND */
 
 void save_processor_state(void);
 void restore_processor_state(void);
@@ -52,4 +88,43 @@ struct saved_context;
 void __save_processor_state(struct saved_context *ctxt);
 void __restore_processor_state(struct saved_context *ctxt);
 
+/* kernel/power/main.c */
+extern struct blocking_notifier_head pm_chain_head;
+
+static inline int register_pm_notifier(struct notifier_block *nb)
+{
+       return blocking_notifier_chain_register(&pm_chain_head, nb);
+}
+
+static inline int unregister_pm_notifier(struct notifier_block *nb)
+{
+       return blocking_notifier_chain_unregister(&pm_chain_head, nb);
+}
+
+#define pm_notifier(fn, pri) {                         \
+       static struct notifier_block fn##_nb =                  \
+               { .notifier_call = fn, .priority = pri };       \
+       register_pm_notifier(&fn##_nb);                 \
+}
+#else /* CONFIG_PM */
+
+static inline int register_pm_notifier(struct notifier_block *nb)
+{
+       return 0;
+}
+
+static inline int unregister_pm_notifier(struct notifier_block *nb)
+{
+       return 0;
+}
+
+#define pm_notifier(fn, pri)   do { (void)(fn); } while (0)
+#endif /* CONFIG_PM */
+
+#if !defined CONFIG_SOFTWARE_SUSPEND || !defined(CONFIG_PM)
+static inline void register_nosave_region(unsigned long b, unsigned long e)
+{
+}
+#endif
+
 #endif /* _LINUX_SWSUSP_H */