上层对于kernel进入深睡的处理
来源：互联网 发布：阿里云 邮件超时 编辑：程序博客网 时间：2024/06/06 03:54
在PowerManagerService中加入内容：
private NusmartPM nusmartPM;
PowerManagerService() {
// Hack to get our uid... should have a func for this.
long token = Binder.clearCallingIdentity();
MY_UID = Process.myUid();
MY_PID = Process.myPid();
Binder.restoreCallingIdentity(token);
// XXX remove this when the kernel doesn't timeout wake locks
Power.setLastUserActivityTimeout(7*24*3600*1000); // one week
// assume nothing is on yet
mUserState = mPowerState = 0;
// Add ourself to the Watchdog monitors.
Watchdog.getInstance().addMonitor(this);
if (SystemProperties.getBoolean("ro.nusmart.pm", false)) {
nusmartPM = new NusmartPM();
}
}
private int setScreenStateLocked(boolean on) {
if (DEBUG_SCREEN_ON) {
RuntimeException e = new RuntimeException("here");
e.fillInStackTrace();
Slog.i(TAG, "Set screen state: " + on, e);
}
if (on) {
if ((mPowerState & SCREEN_ON_BIT) == 0 || mSkippedScreenOn) {
// If we are turning the screen state on, but the screen
// light is currently off, then make sure that we set the
// light at this point to 0. This is the case where we are
// turning on the screen and waiting for the UI to be drawn
// before showing it to the user. We want the light off
// until it is ready to be shown to the user, not it using
// whatever the last value it had.
if (DEBUG_SCREEN_ON) {
Slog.i(TAG, "Forcing brightness 0: mPowerState=0x"
+ Integer.toHexString(mPowerState)
+ " mSkippedScreenOn=" + mSkippedScreenOn);
}
// removed by donglongjiang@TEI for resolving flicker when starting
//mScreenBrightness.forceValueLocked(Power.BRIGHTNESS_OFF);
}
}
if (nusmartPM != null) {
if (on) {
nusmartPM.resume();
} else {
nusmartPM.suspend();
}
}
int err = Power.setScreenState(on);
if (err == 0) {
mLastScreenOnTime = (on ? SystemClock.elapsedRealtime() : 0);
if (mUseSoftwareAutoBrightness) {
enableLightSensorLocked(on);
if (!on) {
// make sure button and key backlights are off too
mButtonLight.turnOff();
mKeyboardLight.turnOff();
// clear current value so we will update based on the new conditions
// when the sensor is reenabled.
mLightSensorValue = -1;
// reset our highest light sensor value when the screen turns off
mHighestLightSensorValue = -1;
}
}
}
return err;
}
void systemReady() {
mSensorManager = new SensorManager(mHandlerThread.getLooper());
mProximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
// don't bother with the light sensor if auto brightness is handled in hardware
if (mUseSoftwareAutoBrightness) {
mLightSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
}
// wait until sensors are enabled before turning on screen.
// some devices will not activate the light sensor properly on boot
// unless we do this.
if (mUseSoftwareAutoBrightness) {
// turn the screen on
setPowerState(SCREEN_BRIGHT);
} else {
// turn everything on
setPowerState(ALL_BRIGHT);
}
synchronized (mLocks) {
Slog.d(TAG, "system ready!");
mDoneBooting = true;
if (nusmartPM != null) {
nusmartPM.ready();
}
enableLightSensorLocked(mUseSoftwareAutoBrightness && mAutoBrightessEnabled);
long identity = Binder.clearCallingIdentity();
try {
mBatteryStats.noteScreenBrightness(getPreferredBrightness());
mBatteryStats.noteScreenOn();
} catch (RemoteException e) {
// Nothing interesting to do.
} finally {
Binder.restoreCallingIdentity(identity);
}
}
}
private final class NusmartPM {
boolean isOnBeforeSuspendWifi = false;
boolean isOnBeforeSuspendWifiAp = false;
boolean isOnBeforeSuspendWifiP2p = false;
boolean isOnBeforeSuspendBT = false;
boolean isReady = false;
boolean hasSuspendTask = false;
private WifiManager wifiManager;
private WifiP2pManager mwifiP2pManager;
private WifiP2pManager.Channel mChannel;
private BluetoothAdapter btAdapter;
long preTraficPacketsWifi = 0;
//boolean isOnBeforeSuspend3G = false;
static final String NUSMART_PARTIAL_NAME = "NusmartPM";
//LWC@nusmart modify,LWC fix bug 0003757
static final int NUSMART_SUSPEND_DELAY = 1 * 1000;
static final int NUSMART_RELEASE_WAKE_LOCK_DELAY = 10 * 1000;
static final int NUSMART_WIFI_TRAFFIC_THRESHOLD = 10;
NusmartPM() {
}
long getWifiTraffic() {
String wifiInterfaceName = SystemProperties.get("wifi.interface", "wlan0");
long total = 0;
long packetsTx = TrafficStats.getTxPackets(wifiInterfaceName);
long packetsRx = TrafficStats.getRxPackets(wifiInterfaceName);
total += packetsTx > 0 ? packetsTx : 0;
total += packetsRx > 0 ? packetsRx : 0;
return total;
}
synchronized void ready() {
if (isReady) {
return;
}
isReady = true;
if (SystemProperties.getBoolean("ro.nusmart.pm.wifi", false)) {
wifiManager = (WifiManager)mContext.getSystemService(Context.WIFI_SERVICE);
mwifiP2pManager = (WifiP2pManager)mContext.getSystemService(Context.WIFI_P2P_SERVICE);
if(mwifiP2pManager != null){
mChannel = mwifiP2pManager.initialize(mContext, mContext.getMainLooper(), null);
}
}
if (SystemProperties.getBoolean("ro.nusmart.pm.bt", false)) {
btAdapter = BluetoothAdapter.getDefaultAdapter();
}
}
synchronized void suspend() {
if (!isReady) {
return;
}
hasSuspendTask = true;
/*
//add softap/wifi-direct s3 policy.
//if (wifiManager !=null && wifiManager.isWifiEnabled()){
if (wifiManager !=null && mwifiP2pManager != null && mChannel != null) {
if (wifiManager.isWifiEnabled()){
preTraficPacketsWifi = getWifiTraffic();
hasSuspendTask = true;
} else if (wifiManager.isWifiApEnabled()){
hasSuspendTask = true;
} else if (SystemProperties.get("net.wifi.p2p.enable").equals("1")){
//since the p2p donot support auto reconnect when disconnet, we disabled it.
hasSuspendTask = true;
} else {
hasSuspendTask = false;
}
}
if (btAdapter != null && btAdapter.isEnabled()) {
hasSuspendTask = true;
}
*/
if (hasSuspendTask) {
Power.acquireWakeLock(Power.PARTIAL_WAKE_LOCK, NUSMART_PARTIAL_NAME);
//LWC@nusmart modify,LWC fix bug 0003757
SystemProperties.set("sys.s3.status","IN_S3");
mHandler.postDelayed(suspendTask, NUSMART_SUSPEND_DELAY);
}
}
synchronized void resume() {
if (!isReady) {
return;
}
// the system has not entered into S3
if (hasSuspendTask) {
hasSuspendTask = false;
mHandler.removeCallbacks(suspendTask);
Power.releaseWakeLock(NUSMART_PARTIAL_NAME);
return;
}
//LWC@nusmart modify,LWC fix bug 0003757
SystemProperties.set("sys.s3.status","OUT_S3");
mHandler.removeCallbacks(releaseWakeLockTask);
if (isOnBeforeSuspendWifi) {
wifiManager.setWifiEnabled(true);
isOnBeforeSuspendWifi = false;
isOnBeforeSuspendWifiAp = false;
isOnBeforeSuspendWifiP2p = false;
}else if (isOnBeforeSuspendWifiAp) {
wifiManager.setWifiApEnabled(null,true);
isOnBeforeSuspendWifi = false;
isOnBeforeSuspendWifiAp = false;
isOnBeforeSuspendWifiP2p = false;
}else if (isOnBeforeSuspendWifiP2p) {
mwifiP2pManager.enableP2p(mChannel);
SystemProperties.set("net.wifi.p2p.enable","1");
isOnBeforeSuspendWifi = false;
isOnBeforeSuspendWifiAp = false;
isOnBeforeSuspendWifiP2p = false;
}
if (isOnBeforeSuspendBT) {
btAdapter.enable();
isOnBeforeSuspendBT = false;
}
}
private Runnable releaseWakeLockTask = new Runnable() {
public void run() {
Power.releaseWakeLock(NusmartPM.NUSMART_PARTIAL_NAME);
}
};
private Runnable suspendTask = new Runnable() {
private boolean hasPartialWakeLock() {
final String filename = "/sys/power/wake_lock";
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(filename));
String line = reader.readLine();
String wakeLocks[] = line.split(" ");
for (String wl : wakeLocks) {
if (!NUSMART_PARTIAL_NAME.equals(wl)) {
return true;
}
}
return false;
} catch (IOException ex) {
Log.w(TAG, "Couldn't read wakelock from " + filename + ": " + ex);
//any wrong when read the file, keep system not to suspend
return true;
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException ex) {
}
}
}
}
public void run() {
synchronized (NusmartPM.this) {
//Task is cancled by resume
if (!hasSuspendTask) {
return;
}
if (hasPartialWakeLock()) {
mHandler.postDelayed(suspendTask, NusmartPM.NUSMART_SUSPEND_DELAY);
return;
}
//Modify by chen for add p2p/softap branch.
//This order is must wifi/softap-->wifi-direct, for auto switch from wifi-diretct to softap,the property is still 1.
//if (wifiManager != null) {
if (wifiManager != null && mwifiP2pManager != null && mChannel != null ) {
if (wifiManager.isWifiEnabled()) {
long traffic = getWifiTraffic();
/*if (traffic > preTraficPacketsWifi + NUSMART_WIFI_TRAFFIC_THRESHOLD) {
preTraficPacketsWifi = traffic;
mHandler.postDelayed(suspendTask, NusmartPM.NUSMART_SUSPEND_DELAY);
return;
}
*/
wifiManager.setWifiEnabled(false);
//avoid to auto switch from wifi/softap/wifi-direct, disable all.
wifiManager.setWifiApEnabled(null,false);
mwifiP2pManager.disableP2p(mChannel);
SystemProperties.set("net.wifi.p2p.enable","0");
isOnBeforeSuspendWifi = true;
} else if (wifiManager.isWifiApEnabled()) {
wifiManager.setWifiApEnabled(null,false);
//avoid to auto switch from wifi/softap/wifi-direct, disable all.
mwifiP2pManager.disableP2p(mChannel);
SystemProperties.set("net.wifi.p2p.enable","0");
wifiManager.setWifiEnabled(false);
isOnBeforeSuspendWifiAp = true;
} else if( SystemProperties.get("net.wifi.p2p.enable").equals("1")){ //this order is important, it must be after wifi/softap.
mwifiP2pManager.disableP2p(mChannel);
SystemProperties.set("net.wifi.p2p.enable","0");
//avoid to auto switch from wifi/softap/wifi-direct, disable all.
wifiManager.setWifiApEnabled(null,false);
wifiManager.setWifiEnabled(false);
isOnBeforeSuspendWifiP2p = true;
} else {
//wifi is disabled by others while waiting for suspend
isOnBeforeSuspendWifi = false;
isOnBeforeSuspendWifiAp = false;
isOnBeforeSuspendWifiP2p = false;
}
}
if (btAdapter != null) {
if (btAdapter.isEnabled()) {
btAdapter.disable();
isOnBeforeSuspendBT = true;
} else {
isOnBeforeSuspendBT = false;
}
}
hasSuspendTask = false;
mHandler.postDelayed(releaseWakeLockTask, NusmartPM.NUSMART_RELEASE_WAKE_LOCK_DELAY);
}
}
};
}// NusmartPM
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