sendPendingNotificationsLocked
interceptKeyBeforeQueueing
setScreenOn
mDisplayBlanker.blankAllDisplays();
停止分发event事件updateEventDispatchingLocked
NativeInputManager
InputMonitor
PowerManagerService
这里有5s timeout时间，如果下面函数超时将重新调用checkReadyForSleepLocked
TvManager.getInstance().enterStrMode();
updatePowerStateLocked
onGoToSleepStarted
Notifier
关屏updateDisplayPowerStateLocked
InputDispatcher
DisplayBlankerImplblankAllDisplays
android_server_PowerManagerService_goToSleep
mScreenUpdateRunnable
onGoToSleepFinished
scheduleScreenUpdate
handleInterceptActions
setState
updateSuspendBlockerLocked
sendGoToSleepBroadcast
goToSleepFromNative
goToSleepInternal
sendNextBroadcast
InputManagerService
ActivityManagerService
stopIfSleepingLocked
requestPowerState
android的原生休眠这里mstar去掉了nativeSetAutoSuspend
injectInputEvent
updatePendingBroadcastLockedsendMessage（MSG_BROADCAST）
DisplayPowerState
PhoneWindowManager
updatePendingBroadcastLocked
goToSleepNoUpdateLocked
PhotonicModulator
ActivityStack
ActivityManagerNative
DisplayPowerController
sendUpdatePowerStateLockedsend msg MSG_UPDATE_POWER_STATE
goingToSleep
updatePowerState
