diff --git a/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h
index b9e1d4a..d15f6b4 100644
--- a/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/DeviceDescriptor.h
@@ -54,6 +54,8 @@
 
 private:
     audio_devices_t mDeviceType;
+
+friend class DeviceVector;
 };
 
 class DeviceVector : public SortedVector< sp<DeviceDescriptor> >
diff --git a/services/audiopolicy/common/managerdefinitions/include/audio_policy_conf.h b/services/audiopolicy/common/managerdefinitions/include/audio_policy_conf.h
index 441bf7b..a393e3b 100644
--- a/services/audiopolicy/common/managerdefinitions/include/audio_policy_conf.h
+++ b/services/audiopolicy/common/managerdefinitions/include/audio_policy_conf.h
@@ -16,6 +16,7 @@
 
 #pragma once
 
+
 /////////////////////////////////////////////////
 //      Definitions for audio policy configuration file (audio_policy.conf)
 /////////////////////////////////////////////////
@@ -50,9 +51,9 @@
                                     // "formats" in outputs descriptors indicating that supported
                                     // values should be queried after opening the output.
 
-#define DEVICES_TAG "devices"
-#define DEVICE_TYPE "type"
-#define DEVICE_ADDRESS "address"
+#define APM_DEVICES_TAG "devices"
+#define APM_DEVICE_TYPE "type"
+#define APM_DEVICE_ADDRESS "address"
 
 #define MIXERS_TAG "mixers"
 #define MIXER_TYPE "type"
diff --git a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
index 8004303..0097d69 100644
--- a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
@@ -142,7 +142,7 @@
 
     audio_devices_t type = AUDIO_DEVICE_NONE;
     while (node) {
-        if (strcmp(node->name, DEVICE_TYPE) == 0) {
+        if (strcmp(node->name, APM_DEVICE_TYPE) == 0) {
             type = ConfigParsingUtils::parseDeviceNames((char *)node->value);
             break;
         }
@@ -158,7 +158,7 @@
 
     node = root->first_child;
     while (node) {
-        if (strcmp(node->name, DEVICE_ADDRESS) == 0) {
+        if (strcmp(node->name, APM_DEVICE_ADDRESS) == 0) {
             deviceDesc->mAddress = String8((char *)node->value);
         } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
             if (audio_is_input_device(type)) {
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index aa2e044..797a2b4 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -521,6 +521,10 @@
     }
 }
 
+audio_mode_t AudioPolicyManager::getPhoneState() {
+    return mEngine->getPhoneState();
+}
+
 void AudioPolicyManager::setForceUse(audio_policy_force_use_t usage,
                                          audio_policy_forced_cfg_t config)
 {
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index dcd74f0..02b678a 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -27,6 +27,7 @@
 #include <media/AudioPolicy.h>
 #include "AudioPolicyInterface.h"
 
+#include <AudioPolicyManagerInterface.h>
 #include <AudioPolicyManagerObserver.h>
 #include <AudioGain.h>
 #include <AudioPort.h>
@@ -44,8 +45,6 @@
 
 namespace android {
 
-class AudioPolicyManagerInterface;
-
 // ----------------------------------------------------------------------------
 
 // Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB
@@ -284,6 +283,9 @@
         virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy,
                                                      bool fromCache);
 
+        bool isStrategyActive(const sp<AudioOutputDescriptor> outputDesc, routing_strategy strategy,
+                              uint32_t inPastMs = 0, nsecs_t sysTime = 0) const;
+
         // change the route of the specified output. Returns the number of ms we have slept to
         // allow new routing to take effect in certain cases.
         virtual uint32_t setOutputDevice(audio_io_handle_t output,
@@ -337,6 +339,8 @@
         // a special tone in the device used for communication
         void handleIncallSonification(audio_stream_type_t stream, bool starting, bool stateChange);
 
+        audio_mode_t getPhoneState();
+
         // true if device is in a telephony or VoIP call
         virtual bool isInCall();
         // true if given state represents a device in a telephony or VoIP call
@@ -523,6 +527,9 @@
 #endif //AUDIO_POLICY_TEST
 
         uint32_t nextAudioPortGeneration();
+
+        // Audio Policy Engine Interface.
+        AudioPolicyManagerInterface *mEngine;
 private:
         // updates device caching and output for streams that can influence the
         //    routing of notifications
@@ -566,12 +573,6 @@
                                                           audio_policy_dev_state_t state,
                                                           const char *device_address,
                                                           const char *device_name);
-
-        bool isStrategyActive(const sp<AudioOutputDescriptor> outputDesc, routing_strategy strategy,
-                              uint32_t inPastMs = 0, nsecs_t sysTime = 0) const;
-
-        // Audio Policy Engine Interface.
-        AudioPolicyManagerInterface *mEngine;
 };
 
 };