diff --git a/core/java/com/android/internal/logging/MetricsLogger.java b/core/java/com/android/internal/logging/MetricsLogger.java
index 6dc66ea..263e522 100644
--- a/core/java/com/android/internal/logging/MetricsLogger.java
+++ b/core/java/com/android/internal/logging/MetricsLogger.java
@@ -41,6 +41,9 @@
     public static final int ACTION_BRIGHTNESS_AUTO = 219;
     public static final int BRIGHTNESS_DIALOG = 220;
     public static final int SYSTEM_ALERT_WINDOW_APPS = 221;
+    public static final int DREAMING = 222;
+    public static final int DOZING = 223;
+
     // Temporary constants go here, to await migration to MetricsConstants.
 
     public static void visible(Context context, int category) throws IllegalArgumentException {
diff --git a/services/core/java/com/android/server/dreams/DreamController.java b/services/core/java/com/android/server/dreams/DreamController.java
index cff4814..8105675 100644
--- a/services/core/java/com/android/server/dreams/DreamController.java
+++ b/services/core/java/com/android/server/dreams/DreamController.java
@@ -16,6 +16,8 @@
 
 package com.android.server.dreams;
 
+import com.android.internal.logging.MetricsLogger;
+
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -25,6 +27,7 @@
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.os.IBinder.DeathRecipient;
+import android.os.SystemClock;
 import android.os.Trace;
 import android.os.UserHandle;
 import android.service.dreams.DreamService;
@@ -55,6 +58,7 @@
     private final Handler mHandler;
     private final Listener mListener;
     private final IWindowManager mIWindowManager;
+    private long mDreamStartTime;
 
     private final Intent mDreamingStartedIntent = new Intent(Intent.ACTION_DREAMING_STARTED)
             .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
@@ -123,6 +127,10 @@
 
             mCurrentDream = new DreamRecord(token, name, isTest, canDoze, userId);
 
+            mDreamStartTime = SystemClock.elapsedRealtime();
+            MetricsLogger.visible(mContext,
+                    mCurrentDream.mCanDoze ? MetricsLogger.DOZING : MetricsLogger.DREAMING);
+
             try {
                 mIWindowManager.addWindowToken(token, WindowManager.LayoutParams.TYPE_DREAM);
             } catch (RemoteException ex) {
@@ -185,6 +193,11 @@
             Slog.i(TAG, "Stopping dream: name=" + oldDream.mName
                     + ", isTest=" + oldDream.mIsTest + ", canDoze=" + oldDream.mCanDoze
                     + ", userId=" + oldDream.mUserId);
+            MetricsLogger.hidden(mContext,
+                    oldDream.mCanDoze ? MetricsLogger.DOZING : MetricsLogger.DREAMING);
+            MetricsLogger.histogram(mContext,
+                    oldDream.mCanDoze ? "dozing_minutes" : "dreaming_minutes" ,
+                    (int) ((SystemClock.elapsedRealtime() - mDreamStartTime) / (1000L * 60L)));
 
             mHandler.removeCallbacks(mStopUnconnectedDreamRunnable);
             mHandler.removeCallbacks(mStopStubbornDreamRunnable);
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index b41dd06..b77a2534 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -95,6 +95,8 @@
 import android.view.KeyCharacterMap.FallbackAction;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
+
+import com.android.internal.logging.MetricsLogger;
 import com.android.internal.policy.PhoneWindow;
 import android.view.Surface;
 import android.view.View;
@@ -5348,6 +5350,7 @@
     public void finishedGoingToSleep(int why) {
         EventLog.writeEvent(70000, 0);
         if (DEBUG_WAKEUP) Slog.i(TAG, "Finished going to sleep... (why=" + why + ")");
+        MetricsLogger.histogram(mContext, "screen_timeout", mLockScreenTimeout / 1000);
 
         // We must get this work done here because the power manager will drop
         // the wake lock and let the system suspend once this function returns.