Android的电源管理

核心提示：EXPORT_SYMBOL(android_lock_suspend); //申请lock,必须调用相应的unlock来释放它EXPORT_SYMBOL(android_lock_suspend_auto_expire);//申请partial wakelock, 定时时间到后会自动释放EXPORT_SYMBOL(an

EXPORT_SYMBOL(android_lock_suspend); //申请lock,必须调用相应的unlock来释放它

EXPORT_SYMBOL(android_lock_suspend_auto_expire);//申请partial wakelock, 定时时间到后会自动释放

EXPORT_SYMBOL(android_unlock_suspend); //释放lock

EXPORT_SYMBOL(android_power_wakeup); //唤醒系统到on

EXPORT_SYMBOL(android_register_early_suspend); //注册early suspend的驱动

EXPORT_SYMBOL(android_unregister_early_suspend); //取消已经注册的early suspend的驱动

 

提供给Android Framework层的proc文件如下:

"/sys/android_power/acquire_partial_wake_lock" //申请partial wake lock

"/sys/android_power/acquire_full_wake_lock" //申请full wake lock

"/sys/android_power/release_wake_lock" //释放相应的wake lock

"/sys/android_power/request_state" //请求改变系统状态,进standby和回到wakeup两种状态

"/sys/android_power/state" //指示当前系统的状态

 

Android