CEC: Make deviceSelect work for MHL device

MHL device works on hotplug but not when API deviceSelect is invoked
to select it due to a bug not finding the right MHL device instance.
This CL rectifies it by searching for not only CEC but MHL devices
attached to TV.

Bug: 18909552
Change-Id: I4df1ead836090eb3a7476b7738be47a6970edb7d

services/core/java/com/android/server/hdmi/HdmiCecLocalDeviceTv.java

@@ -326,8 +326,12 @@ final class HdmiCecLocalDeviceTv extends HdmiCecLocalDevice {
             ActiveSource activeSource = getActiveSource();
             HdmiDeviceInfo info = getCecDeviceInfo(activeSource.logicalAddress);
             if (info == null) {
-                info = new HdmiDeviceInfo(Constants.ADDR_INVALID, path, getActivePortId(),
-                        HdmiDeviceInfo.DEVICE_RESERVED, 0, null);
+                info = mService.getDeviceInfoByPort(getActivePortId());
+                if (info == null) {
+                    // No CEC/MHL device is present at the port. Attempt to switch to
+                    // the hardware port itself for non-CEC devices that may be connected.
+                    info = new HdmiDeviceInfo(path, getActivePortId());
+                }
             }
             mService.invokeInputChangeListener(info);
         }

services/core/java/com/android/server/hdmi/HdmiControlService.java

@@ -672,6 +672,16 @@ public final class HdmiControlService extends SystemService {
         return tv() == null ? null : tv().getCecDeviceInfo(logicalAddress);
     }
 
+    @ServiceThreadOnly
+    HdmiDeviceInfo getDeviceInfoByPort(int port) {
+        assertRunOnServiceThread();
+        HdmiMhlLocalDeviceStub info = mMhlController.getLocalDevice(port);
+        if (info != null) {
+            return info.getInfo();
+        }
+        return null;
+    }
+
     /**
      * Returns version of CEC.
      */