1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 083ffea7ba18..e1e3742733be 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -92,6 +92,13 @@ typedef int __bitwise suspend_state_t;
  *      @enter() and @wake(), even if any of them fails.  It is executed after
  *      a failing @prepare.
  *
+ * @suspend_again: Returns whether the system should suspend again (true) or
+ *      not (false). If the platform wants to poll sensors or execute some
+ *      code during suspended without invoking userspace and most of devices,
+ *      suspend_again callback is the place assuming that periodic-wakeup or
+ *      alarm-wakeup is already setup. This allows to execute some codes while
+ *      being kept suspended in the view of userland and devices.
+ *
  * @end: Called by the PM core right after resuming devices, to indicate to
  *      the platform that the system has returned to the working state or
  *      the transition to the sleep state has been aborted.
@@ -113,6 +120,7 @@ struct platform_suspend_ops {
         int (*enter)(suspend_state_t state);
         void (*wake)(void);
         void (*finish)(void);
+        bool (*suspend_again)(void);
         void (*end)(void);
         void (*recover)(void);
 };