diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 424a0b7d219da..edbe1304d9106 100755
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -157,6 +157,15 @@
          ActivityManager based on screen size. -->
     <integer name="config_extraFreeKbytesAdjust">0</integer>
 
+    <!-- Set this to true to enable the platform's auto-power-save modes like doze and
+         app standby.  These are not enabled by default because they require a standard
+         cloud-to-device messaging service for apps to interact correctly with the modes
+         (such as to be able to deliver an instant message to the device even when it is
+         dozing).  This should be enabled if you have such services and expect apps to
+         correctly use them when installed on your device.  Otherwise, keep this disabled
+         so that applications can still use their own mechanisms. -->
+    <bool name="config_enableAutoPowerModes">false</bool>
+
     <!-- The duration (in milliseconds) that the radio will scan for a signal
          when there's no network connection. If the scan doesn't timeout, use zero -->
     <integer name="config_radioScanningTimeout">0</integer>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 295251c557185..e6f54eecd8668 100755
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -251,6 +251,7 @@
   <java-symbol type="bool" name="config_bluetooth_le_peripheral_mode_supported" />
   <java-symbol type="bool" name="config_cellBroadcastAppLinks" />
   <java-symbol type="bool" name="config_duplicate_port_omadm_wappush" />
+  <java-symbol type="bool" name="config_enableAutoPowerModes" />
   <java-symbol type="bool" name="config_enable_emergency_call_while_sim_locked" />
   <java-symbol type="bool" name="config_enable_puk_unlock_screen" />
   <java-symbol type="bool" name="config_enableBurnInProtection" />
diff --git a/services/core/java/com/android/server/DeviceIdleController.java b/services/core/java/com/android/server/DeviceIdleController.java
index 82b334a3c25c4..dc203ffaee33c 100644
--- a/services/core/java/com/android/server/DeviceIdleController.java
+++ b/services/core/java/com/android/server/DeviceIdleController.java
@@ -97,9 +97,6 @@ public class DeviceIdleController extends SystemService
     private static final String ACTION_STEP_IDLE_STATE =
             "com.android.server.device_idle.STEP_IDLE_STATE";
 
-    private static final String ACTION_ENTER_INACTIVE_STATE =
-        "com.android.server.device_idle.ENTER_INACTIVE_STATE";
-
     private AlarmManager mAlarmManager;
     private IBatteryStats mBatteryStats;
     private PowerManagerInternal mLocalPowerManager;
@@ -112,7 +109,7 @@ public class DeviceIdleController extends SystemService
     private Intent mIdleIntent;
     private Display mCurDisplay;
     private AnyMotionDetector mAnyMotionDetector;
-    private boolean mIdleDisabled;
+    private boolean mEnabled;
     private boolean mScreenOn;
     private boolean mCharging;
     private boolean mSigMotionActive;
@@ -191,10 +188,6 @@ public class DeviceIdleController extends SystemService
                 synchronized (DeviceIdleController.this) {
                     stepIdleStateLocked();
                 }
-            } else if (ACTION_ENTER_INACTIVE_STATE.equals(intent.getAction())) {
-                synchronized (DeviceIdleController.this) {
-                    enterInactiveStateLocked();
-                }
             }
         }
     };
@@ -612,6 +605,8 @@ public class DeviceIdleController extends SystemService
         final PackageManager pm = getContext().getPackageManager();
 
         synchronized (this) {
+            mEnabled = getContext().getResources().getBoolean(
+                    com.android.internal.R.bool.config_enableAutoPowerModes);
             SystemConfig sysConfig = SystemConfig.getInstance();
             ArraySet<String> allowPower = sysConfig.getAllowInPowerSave();
             for (int i=0; i<allowPower.size(); i++) {
@@ -881,7 +876,7 @@ public class DeviceIdleController extends SystemService
 
     void becomeInactiveIfAppropriateLocked() {
         if (DEBUG) Slog.d(TAG, "becomeInactiveIfAppropriateLocked()");
-        if (!mScreenOn && !mCharging && !mIdleDisabled && mState == STATE_ACTIVE) {
+        if (!mScreenOn && !mCharging && mEnabled && mState == STATE_ACTIVE) {
             // Screen has turned off; we are now going to become inactive and start
             // waiting to see if we will ultimately go idle.
             mState = STATE_INACTIVE;
@@ -1216,8 +1211,12 @@ public class DeviceIdleController extends SystemService
         pw.println("    Completely disable device idle mode.");
         pw.println("  enable");
         pw.println("    Re-enable device idle mode after it had previously been disabled.");
-        pw.println("  whitelist");
+        pw.println("  enabled");
+        pw.println("    Print 1 if device idle mode is currently enabled, else 0.");
+        pw.println("  whitelist [package ...]");
         pw.println("    Add (prefix with +) or remove (prefix with -) packages.");
+        pw.println("  tempwhitelist [package ..]");
+        pw.println("    Temporarily place packages in whitelist for 10 seconds.");
     }
 
     void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
@@ -1252,8 +1251,8 @@ public class DeviceIdleController extends SystemService
                     return;
                 } else if ("disable".equals(arg)) {
                     synchronized (this) {
-                        if (!mIdleDisabled) {
-                            mIdleDisabled = true;
+                        if (mEnabled) {
+                            mEnabled = false;
                             becomeActiveLocked("disabled", Process.myUid());
                             pw.println("Idle mode disabled");
                         }
@@ -1261,13 +1260,18 @@ public class DeviceIdleController extends SystemService
                     return;
                 } else if ("enable".equals(arg)) {
                     synchronized (this) {
-                        if (mIdleDisabled) {
-                            mIdleDisabled = false;
+                        if (!mEnabled) {
+                            mEnabled = true;
                             becomeInactiveIfAppropriateLocked();
                             pw.println("Idle mode enabled");
                         }
                     }
                     return;
+                } else if ("enabled".equals(arg)) {
+                    synchronized (this) {
+                        pw.println(mEnabled ? "1" : " 0");
+                    }
+                    return;
                 } else if ("whitelist".equals(arg)) {
                     i++;
                     while (i < args.length) {
@@ -1364,9 +1368,9 @@ public class DeviceIdleController extends SystemService
                 }
             }
 
+            pw.print("  mEnabled="); pw.println(mEnabled);
             pw.print("  mSigMotionSensor="); pw.println(mSigMotionSensor);
             pw.print("  mCurDisplay="); pw.println(mCurDisplay);
-            pw.print("  mIdleDisabled="); pw.println(mIdleDisabled);
             pw.print("  mScreenOn="); pw.println(mScreenOn);
             pw.print("  mCharging="); pw.println(mCharging);
             pw.print("  mSigMotionActive="); pw.println(mSigMotionActive);
diff --git a/services/usage/java/com/android/server/usage/UsageStatsService.java b/services/usage/java/com/android/server/usage/UsageStatsService.java
index 3b7ed91306053..490236e41ac77 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsService.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsService.java
@@ -35,8 +35,6 @@ import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
-import android.content.SyncAdapterType;
-import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ParceledListSlice;
@@ -74,7 +72,6 @@ import com.android.internal.app.IBatteryStats;
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.os.SomeArgs;
 import com.android.internal.util.IndentingPrintWriter;
-import com.android.server.DeviceIdleController;
 import com.android.server.SystemService;
 
 import java.io.BufferedReader;
@@ -138,6 +135,7 @@ public class UsageStatsService extends SystemService implements
     long mRealTimeSnapshot;
     long mSystemTimeSnapshot;
 
+    boolean mAppIdleEnabled;
     boolean mAppIdleParoled;
     private boolean mScreenOn;
     private long mLastAppIdleParoledTime;
@@ -175,10 +173,15 @@ public class UsageStatsService extends SystemService implements
         getContext().registerReceiverAsUser(new UserActionsReceiver(), UserHandle.ALL, userActions,
                 null, null);
 
-        IntentFilter deviceStates = new IntentFilter(BatteryManager.ACTION_CHARGING);
-        deviceStates.addAction(BatteryManager.ACTION_DISCHARGING);
-        deviceStates.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
-        getContext().registerReceiver(new DeviceStateReceiver(), deviceStates);
+        mAppIdleEnabled = getContext().getResources().getBoolean(
+                com.android.internal.R.bool.config_enableAutoPowerModes);
+        if (mAppIdleEnabled) {
+            IntentFilter deviceStates = new IntentFilter(BatteryManager.ACTION_CHARGING);
+            deviceStates.addAction(BatteryManager.ACTION_DISCHARGING);
+            deviceStates.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
+            getContext().registerReceiver(new DeviceStateReceiver(), deviceStates);
+        }
+
         synchronized (mLock) {
             cleanUpRemovedUsersLocked();
         }
@@ -186,7 +189,6 @@ public class UsageStatsService extends SystemService implements
         mRealTimeSnapshot = SystemClock.elapsedRealtime();
         mSystemTimeSnapshot = System.currentTimeMillis();
 
-
         publishLocalService(UsageStatsManagerInternal.class, new LocalService());
         publishBinderService(Context.USAGE_STATS_SERVICE, new BinderService());
     }
@@ -342,6 +344,10 @@ public class UsageStatsService extends SystemService implements
 
     /** Check all running users' or specified user's apps to see if they enter an idle state. */
     void checkIdleStates(int checkUserId) {
+        if (!mAppIdleEnabled) {
+            return;
+        }
+
         final int[] userIds;
         try {
             if (checkUserId == UserHandle.USER_ALL) {
@@ -772,6 +778,10 @@ public class UsageStatsService extends SystemService implements
     private boolean isAppIdleFiltered(String packageName, int userId,
             UserUsageStatsService userService, long timeNow, long screenOnTime) {
         if (packageName == null) return false;
+        // If not enabled at all, of course nobody is ever idle.
+        if (!mAppIdleEnabled) {
+            return false;
+        }
         synchronized (mLock) {
             // Temporary exemption, probably due to device charging or occasional allowance to
             // be allowed to sync, etc.
@@ -900,6 +910,19 @@ public class UsageStatsService extends SystemService implements
             pw.print("  mAppIdleParoleDurationMillis=");
             TimeUtils.formatDuration(mAppIdleParoleDurationMillis, pw);
             pw.println();
+
+            pw.println();
+            pw.print("mAppIdleEnabled="); pw.print(mAppIdleEnabled);
+            pw.print(" mAppIdleParoled="); pw.print(mAppIdleParoled);
+            pw.print(" mScreenOn="); pw.println(mScreenOn);
+            pw.print("mLastAppIdleParoledTime=");
+            TimeUtils.formatDuration(mLastAppIdleParoledTime, pw);
+            pw.println();
+            pw.print("mScreenOnTime="); TimeUtils.formatDuration(mScreenOnTime, pw);
+            pw.println();
+            pw.print("mScreenOnSystemTimeSnapshot=");
+            TimeUtils.formatDuration(mScreenOnSystemTimeSnapshot, pw);
+            pw.println();
         }
     }