Do not explicity disconnect Data during power down for 1x.

In 1x, if the data call is torn down before radio power off, modem will
have to send a data call release and change to initialization state followed
by idle state and send out power down registration. If the power off request is sent
to the modem during Initialization state after call release, there is a chance that
modem does not perform power down registration.

Instead if we directly initiate a power down, modem just sets a power down registration
bit in the release order. This change also optimizes the power down procedure in 1x by
letting the modem handle data call release during power down.

Change-Id: I0f083cc3b005ec1e64105350abb43d10583b0881

Author: Naveen Kalla

telephony/java/com/android/internal/telephony/cdma/CdmaServiceStateTracker.java

@@ -552,32 +552,53 @@ protected void setPowerStateToDesired() {
     }
 
     @Override
-    protected void powerOffRadioSafely(){
-        // clean data connection
+    protected void powerOffRadioSafely() {
         DataConnectionTracker dcTracker = phone.mDataConnection;
 
         Message msg = dcTracker.obtainMessage(DataConnectionTracker.EVENT_CLEAN_UP_CONNECTION);
-        msg.arg1 = 1; // tearDown is true
         msg.obj = CDMAPhone.REASON_RADIO_TURNED_OFF;
-        dcTracker.sendMessage(msg);
 
-        synchronized(this) {
-            if (!mPendingRadioPowerOffAfterDataOff) {
-                DataConnectionTracker.State currentState = dcTracker.getState();
-                if (currentState != DataConnectionTracker.State.CONNECTED
-                        && currentState != DataConnectionTracker.State.DISCONNECTING
-                        && currentState != DataConnectionTracker.State.INITING) {
-                    if (DBG) log("Data disconnected, turn off radio right away.");
-                    hangupAndPowerOff();
-                }
-                else if (sendEmptyMessageDelayed(EVENT_SET_RADIO_POWER_OFF, 30000)) {
-                    if (DBG) {
-                        log("Wait up to 30 sec for data to disconnect, then turn off radio.");
+        synchronized (this) {
+            if (networkType == ServiceState.RADIO_TECHNOLOGY_1xRTT) {
+                /*
+                 * In 1x CDMA , during radio power off modem will disconnect the
+                 * data call and sends the power down registration message along
+                 * with the data call release message to the network
+                 */
+
+                msg.arg1 = 0; // tearDown is false since modem does it anyway for 1X
+                dcTracker.sendMessage(msg);
+
+                Log.w(LOG_TAG, "Turn off the radio right away");
+                hangupAndPowerOff();
+            } else {
+                if (!mPendingRadioPowerOffAfterDataOff) {
+                    DataConnectionTracker.State currentState = dcTracker.getState();
+                    if (currentState != DataConnectionTracker.State.CONNECTED
+                            && currentState != DataConnectionTracker.State.DISCONNECTING
+                            && currentState != DataConnectionTracker.State.INITING) {
+
+                        msg.arg1 = 0; // tearDown is false as it is not needed.
+                        dcTracker.sendMessage(msg);
+
+                        if (DBG)
+                            log("Data disconnected, turn off radio right away.");
+                        hangupAndPowerOff();
+                    } else {
+                        // clean data connection
+                        msg.arg1 = 1; // tearDown is true
+                        dcTracker.sendMessage(msg);
+
+                        if (sendEmptyMessageDelayed(EVENT_SET_RADIO_POWER_OFF, 30000)) {
+                            if (DBG) {
+                                log("Wait upto 30s for data to disconnect, then turn off radio.");
+                            }
+                            mPendingRadioPowerOffAfterDataOff = true;
+                        } else {
+                            Log.w(LOG_TAG, "Cannot send delayed Msg, turn off radio right away.");
+                            hangupAndPowerOff();
+                        }
                     }
-                    mPendingRadioPowerOffAfterDataOff = true;
-                } else {
-                    Log.w(LOG_TAG, "Cannot send delayed Msg, turn off radio right away.");
-                    hangupAndPowerOff();
                 }
             }
         }