电视遥控器，短端走待机(str待机)流程， 长按是关机，走关机流程，记录下待机流程。
参考博客
待机流程
Android P引入自动待机功能，只有存在WakeLock，wakeup_count就不会为0，每次acquire wake_lock会让wakeup_count加1，而release wake_lock会让wakeup_count减1，当wakeup_count为0则autosuspend会重新待机下去
相关代码
frameworks/base/services/core/java/com/android/server/power/PowerManagerService.java
hardware/interfaces/power/1.0/default/Power.cpp
hardware/realtek/power/power.cpp
hardware/realtek/power/power.cpp
代码流程
goToSleepInternal()
–>goToSleepNoUpdateLocked()
–>setWakefulnessLocked(WAKEFULNESS_DOZING);
updatePowerStateLocked()
–> updateDisplayPowerStateLocked() //关闭屏幕
–> updateDreamLocked() //更新屏保状态
–> finishWakefulnessChangeIfNeededLocked()
–>mNotifier.onWakefulnessChangeFinished() //通知AMS, WMS系统状态改变。
–&