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Commit 6b879024 authored by Ruchi Kandoi's avatar Ruchi Kandoi Committed by Android (Google) Code Review
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Merge "PowerManager: Adds a call to reduce refresh rate while device is in... 

Merge "PowerManager: Adds a call to reduce refresh rate while device is in BatterySaverMode." into lmp-dev
parents a859523b 0fe32ae5

services/core/java/com/android/server/power/PowerManagerService.java

+18 −0
Original line number Diff line number Diff line
@@ -58,6 +58,8 @@ import android.os.SystemProperties; 
import android.os.SystemService;

import android.os.UserHandle;

import android.os.WorkSource;

import android.os.Parcel;

import android.os.ServiceManager;

import android.provider.Settings;

import android.service.dreams.DreamManagerInternal;

import android.util.EventLog;
@@ -659,6 +661,7 @@ public final class PowerManagerService extends com.android.server.SystemService 
        if (mLowPowerModeEnabled != lowPowerModeEnabled) {

            mLowPowerModeEnabled = lowPowerModeEnabled;

            powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0);

            setSurfaceFlingerLowPowerMode(lowPowerModeEnabled ? 1 : 0);

            mLowPowerModeEnabled = lowPowerModeEnabled;

            BackgroundThread.getHandler().post(new Runnable() {

                @Override
@@ -2094,6 +2097,21 @@ public final class PowerManagerService extends com.android.server.SystemService 
        nativeSendPowerHint(hintId, data);

    }



    private static void setSurfaceFlingerLowPowerMode(int enabled) {

        try {

            final IBinder flinger = ServiceManager.getService("SurfaceFlinger");

            if (flinger != null) {

                final Parcel data = Parcel.obtain();

                data.writeInterfaceToken("android.ui.ISurfaceComposer");

                data.writeInt(enabled);

                flinger.transact(1016, data, null, 0);

                data.recycle();

            }

        } catch (RemoteException ex) {

            Slog.e(TAG, "Failed to reduce refresh rate", ex);

        }

    }



    /**

     * Low-level function turn the device off immediately, without trying

     * to be clean.  Most people should use {@link ShutdownThread} for a clean shutdown.