diff --git a/audio/aidl/vts/ModuleConfig.cpp b/audio/aidl/vts/ModuleConfig.cpp
index 8f19547..a633d83 100644
--- a/audio/aidl/vts/ModuleConfig.cpp
+++ b/audio/aidl/vts/ModuleConfig.cpp
@@ -67,20 +67,7 @@
     return {};
 }
 
-std::vector<aidl::android::media::audio::common::AudioPort>
-ModuleConfig::getAudioPortsForDeviceTypes(const std::vector<AudioDeviceType>& deviceTypes,
-                                          const std::string& connection) {
-    return getAudioPortsForDeviceTypes(mPorts, deviceTypes, connection);
-}
-
 // static
-std::vector<aidl::android::media::audio::common::AudioPort> ModuleConfig::getBuiltInMicPorts(
-        const std::vector<aidl::android::media::audio::common::AudioPort>& ports) {
-    return getAudioPortsForDeviceTypes(
-            ports, std::vector<AudioDeviceType>{AudioDeviceType::IN_MICROPHONE,
-                                                AudioDeviceType::IN_MICROPHONE_BACK});
-}
-
 std::vector<aidl::android::media::audio::common::AudioPort>
 ModuleConfig::getAudioPortsForDeviceTypes(
         const std::vector<aidl::android::media::audio::common::AudioPort>& ports,
@@ -100,6 +87,14 @@
     return result;
 }
 
+// static
+std::vector<aidl::android::media::audio::common::AudioPort> ModuleConfig::getBuiltInMicPorts(
+        const std::vector<aidl::android::media::audio::common::AudioPort>& ports) {
+    return getAudioPortsForDeviceTypes(
+            ports, std::vector<AudioDeviceType>{AudioDeviceType::IN_MICROPHONE,
+                                                AudioDeviceType::IN_MICROPHONE_BACK});
+}
+
 template <typename T>
 auto findById(const std::vector<T>& v, int32_t id) {
     return std::find_if(v.begin(), v.end(), [&](const auto& p) { return p.id == id; });
@@ -119,10 +114,7 @@
             } else {
                 mAttachedSinkDevicePorts.insert(port.id);
             }
-        } else if (devicePort.device.type.connection != AudioDeviceDescription::CONNECTION_VIRTUAL
-                   // The "virtual" connection is used for remote submix which is a dynamic
-                   // device but it can be connected and used w/o external hardware.
-                   && port.profiles.empty()) {
+        } else {
             mExternalDevicePorts.insert(port.id);
         }
     }
@@ -141,6 +133,12 @@
     return result;
 }
 
+std::vector<aidl::android::media::audio::common::AudioPort>
+ModuleConfig::getAudioPortsForDeviceTypes(const std::vector<AudioDeviceType>& deviceTypes,
+                                          const std::string& connection) const {
+    return getAudioPortsForDeviceTypes(mPorts, deviceTypes, connection);
+}
+
 std::vector<AudioPort> ModuleConfig::getConnectedExternalDevicePorts() const {
     std::vector<AudioPort> result;
     std::copy_if(mPorts.begin(), mPorts.end(), std::back_inserter(result), [&](const auto& port) {
@@ -229,6 +227,16 @@
     });
 }
 
+std::vector<AudioPort> ModuleConfig::getRemoteSubmixPorts(bool isInput, bool singlePort) const {
+    AudioDeviceType deviceType = isInput ? AudioDeviceType::IN_SUBMIX : AudioDeviceType::OUT_SUBMIX;
+    auto ports = getAudioPortsForDeviceTypes(std::vector<AudioDeviceType>{deviceType},
+                                             AudioDeviceDescription::CONNECTION_VIRTUAL);
+    if (singlePort) {
+        if (!ports.empty()) ports.resize(1);
+    }
+    return ports;
+}
+
 std::vector<AudioPort> ModuleConfig::getConnectedDevicesPortsForMixPort(
         bool isInput, const AudioPortConfig& mixPortConfig) const {
     const auto mixPortIt = findById<AudioPort>(mPorts, mixPortConfig.portId);
@@ -281,19 +289,29 @@
     return {};
 }
 
-std::vector<AudioPort> ModuleConfig::getRoutableMixPortsForDevicePort(const AudioPort& port) const {
-    std::set<int32_t> portIds;
-    for (const auto& route : mRoutes) {
-        if (port.id == route.sinkPortId) {
-            portIds.insert(route.sourcePortIds.begin(), route.sourcePortIds.end());
-        } else if (auto it = std::find(route.sourcePortIds.begin(), route.sourcePortIds.end(),
-                                       port.id);
-                   it != route.sourcePortIds.end()) {
-            portIds.insert(route.sinkPortId);
-        }
-    }
+std::vector<AudioPort> ModuleConfig::getRoutableDevicePortsForMixPort(const AudioPort& port,
+                                                                      bool connectedOnly) const {
+    std::set<int32_t> portIds = findRoutablePortIds(port.id);
     const bool isInput = port.flags.getTag() == AudioIoFlags::input;
-    return findMixPorts(isInput, false /*connectedOnly*/, false /*singlePort*/,
+    std::set<int32_t> devicePortIds;
+    if (connectedOnly) {
+        devicePortIds = isInput ? getConnectedSourceDevicePorts() : getConnectedSinkDevicePorts();
+    } else {
+        devicePortIds = portIds;
+    }
+    std::vector<AudioPort> result;
+    std::copy_if(mPorts.begin(), mPorts.end(), std::back_inserter(result), [&](const auto& port) {
+        return port.ext.getTag() == AudioPortExt::Tag::device && portIds.count(port.id) > 0 &&
+               devicePortIds.count(port.id) > 0;
+    });
+    return result;
+}
+
+std::vector<AudioPort> ModuleConfig::getRoutableMixPortsForDevicePort(const AudioPort& port,
+                                                                      bool connectedOnly) const {
+    std::set<int32_t> portIds = findRoutablePortIds(port.id);
+    const bool isInput = port.flags.getTag() == AudioIoFlags::input;
+    return findMixPorts(isInput, connectedOnly, false /*singlePort*/,
                         [&portIds](const AudioPort& p) { return portIds.count(p.id) > 0; });
 }
 
@@ -470,6 +488,20 @@
     return result;
 }
 
+std::set<int32_t> ModuleConfig::findRoutablePortIds(int32_t portId) const {
+    std::set<int32_t> portIds;
+    for (const auto& route : mRoutes) {
+        if (portId == route.sinkPortId) {
+            portIds.insert(route.sourcePortIds.begin(), route.sourcePortIds.end());
+        } else if (auto it = std::find(route.sourcePortIds.begin(), route.sourcePortIds.end(),
+                                       portId);
+                   it != route.sourcePortIds.end()) {
+            portIds.insert(route.sinkPortId);
+        }
+    }
+    return portIds;
+}
+
 std::vector<AudioPortConfig> ModuleConfig::generateAudioMixPortConfigs(
         const std::vector<AudioPort>& ports, bool isInput, bool singleProfile) const {
     std::vector<AudioPortConfig> result;