Implement the API to notify that radio triggered IMS deregistration

Bug: 219242993
Test: atest

Change-Id: I536fe9fb94124d4f82b818557992aab6c4b60cba

2 files changed, 26 insertions, 0 deletions

diff --git a/src/java/com/android/ims/ImsManager.java b/src/java/com/android/ims/ImsManager.java
index f016ff63..a2829e0c 100644
--- a/src/java/com/android/ims/ImsManager.java
+++ b/src/java/com/android/ims/ImsManager.java
@@ -2783,6 +2783,21 @@ public class ImsManager implements FeatureUpdates {
         }
     }
 
+    /**
+     * Notifies that radio triggered IMS deregistration.
+     * @param reason the reason why the deregistration is triggered.
+     */
+    public void triggerDeregistration(@ImsRegistrationImplBase.ImsDeregistrationReason int reason)
+            throws ImsException {
+        MmTelFeatureConnection c = getOrThrowExceptionIfServiceUnavailable();
+        try {
+            c.triggerDeregistration(reason);
+        } catch (RemoteException e) {
+            throw new ImsException("triggerDeregistration", e,
+                    ImsReasonInfo.CODE_LOCAL_IMS_SERVICE_DOWN);
+        }
+    }
+
     public int getImsServiceState() throws ImsException {
         MmTelFeatureConnection c = getOrThrowExceptionIfServiceUnavailable();
         return c.getFeatureState();
diff --git a/src/java/com/android/ims/MmTelFeatureConnection.java b/src/java/com/android/ims/MmTelFeatureConnection.java
index 8bafc9db..fefffa7d 100644
--- a/src/java/com/android/ims/MmTelFeatureConnection.java
+++ b/src/java/com/android/ims/MmTelFeatureConnection.java
@@ -37,6 +37,7 @@ import android.telephony.ims.aidl.ISrvccStartedCallback;
 import android.telephony.ims.feature.CapabilityChangeRequest;
 import android.telephony.ims.feature.MmTelFeature;
 import android.telephony.ims.stub.ImsEcbmImplBase;
+import android.telephony.ims.stub.ImsRegistrationImplBase;
 import android.telephony.ims.stub.ImsSmsImplBase;
 import android.util.Log;
 
@@ -571,6 +572,16 @@ public class MmTelFeatureConnection extends FeatureConnection {
         }
     }
 
+    public void triggerDeregistration(@ImsRegistrationImplBase.ImsDeregistrationReason int reason)
+            throws RemoteException {
+        IImsRegistration registration = getRegistration();
+        if (registration != null) {
+            registration.triggerDeregistration(reason);
+        } else {
+            Log.e(TAG + " [" + mSlotId + "]", "triggerDeregistration IImsRegistration is null");
+        }
+    }
+
     public @MmTelFeature.ProcessCallResult int shouldProcessCall(boolean isEmergency,
             String[] numbers) throws RemoteException {
         if (isEmergency && !isEmergencyMmTelAvailable()) {