Use libsuspend to trigger suspend

Calling to libsuspend to trigger suspend instead of letting
the power hal do it.

Change-Id: I3cf51fea4d288f9fc19ce5aae39cdd581e8b44cb

Author: colincross

core/jni/Android.mk

@@ -218,6 +218,7 @@ LOCAL_SHARED_LIBRARIES := \
 	libusbhost \
 	libharfbuzz \
 	libz \
+	libsuspend \
 
 ifeq ($(USE_OPENGL_RENDERER),true)
 	LOCAL_SHARED_LIBRARIES += libhwui

core/jni/android_os_Power.cpp

@@ -24,6 +24,7 @@
 #include <hardware/power.h>
 #include <hardware_legacy/power.h>
 #include <cutils/android_reboot.h>
+#include <suspend/autosuspend.h>
 
 static struct power_module *sPowerModule;
 
@@ -70,8 +71,14 @@ setLastUserActivityTimeout(JNIEnv *env, jobject clazz, jlong timeMS)
 static int
 setScreenState(JNIEnv *env, jobject clazz, jboolean on)
 {
-    if (sPowerModule)
-        sPowerModule->setInteractive(sPowerModule, on);
+    if (on) {
+	autosuspend_disable();
+	sPowerModule->setInteractive(sPowerModule, true);
+    } else {
+	sPowerModule->setInteractive(sPowerModule, false);
+	autosuspend_enable();
+    }
+
     return 0;
 }