adding in suspend_again

1 files changed, 25 insertions, 0 deletions

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index d4e3f16d5e8..9c26477f9d0 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -364,6 +364,31 @@ extern bool pm_get_wakeup_count(unsigned int *count, bool block);
 extern bool pm_save_wakeup_count(unsigned int count);
 extern void pm_wakep_autosleep_enabled(bool set);
 
+
+/**
+ * struct suspend_again_ops - suspend again support
+ *
+ * Any driver can register suspend_again_ops,
+ * so that they can respond to a suspend_again() check
+ *
+ * suspend_again() is registered at the platform level, so every platform must implement the register function
+ *
+ * @data_ptr: a pointer to data needed by the suspend again check
+ *
+ * @suspend_again_check: Function called by the platform suspend_again() function to check for suspend_again
+ */
+struct suspend_again_ops {
+	void *data_ptr;
+	bool (*suspend_again_check)(void *data);
+};
+
+
+#ifdef CONFIG_PM_SUSPEND_AGAIN_OPS
+extern void pm_register_suspend_again_ops(struct suspend_again_ops const *ops);
+#else
+static inline void pm_register_suspend_again_ops(struct suspend_again_ops const *ops) {}
+#endif
+
 static inline void lock_system_sleep(void)
 {
 	current->flags |= PF_FREEZER_SKIP;