power: Make pm_system_suspend private
pm_system_suspend is called only from the idle thread and should
not be exported as a public API.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
diff --git a/kernel/include/kernel_internal.h b/kernel/include/kernel_internal.h
index 8ced654..0f6274a 100644
--- a/kernel/include/kernel_internal.h
+++ b/kernel/include/kernel_internal.h
@@ -207,6 +207,27 @@
!__i.key; \
k_spin_unlock(lck, __key), __i.key = 1)
+#ifdef CONFIG_PM
+
+/* When the kernel is about to go idle, it calls this function to notify the
+ * power management subsystem, that the kernel is ready to enter the idle state.
+ *
+ * At this point, the kernel has disabled interrupts and computed the maximum
+ * time the system can remain idle. The function passes the time that the system
+ * can remain idle. The SOC interface performs power operations that can be done
+ * in the available time. The power management operations must halt execution of
+ * the CPU.
+ *
+ * This function assumes that a wake up event has already been set up by the
+ * application.
+ *
+ * This function is entered with interrupts disabled. It should re-enable
+ * interrupts if it had entered a power state.
+ */
+enum pm_state pm_system_suspend(int32_t ticks);
+
+#endif
+
#ifdef __cplusplus
}
#endif
