Fwk 唤醒流程分析doc

目录

1. FWK 中唤醒的理解 ......................................................................................................................2

2. 唤醒流程分析 .............................................................................................................................2

2.1 屏幕绘制流程 ...................................................................................................................2

2.2 背光点亮流程 ...................................................................................................................6

3. LOG DEBUG 开关 .......................................................................................................................11

4. Log 分析......................................................................................................................................11

1. FWK 中唤醒的理解

设备在进入休眠后，在接收到按键消息,电话，闹钟等事件后，设备内核从睡眠唤醒，

1. PhoneWindonManager.java 接收到 power 按键消息，触发 wakeup

2.调用 PowerManager wakup 并通过 binder 调用 PowerManagerService

3.PowerManagerService 调用 wakeUpInternal