diff --git a/automotive/audiocontrol/aidl/default/Android.bp b/automotive/audiocontrol/aidl/default/Android.bp
index 1439cce..6bf4b9d 100644
--- a/automotive/audiocontrol/aidl/default/Android.bp
+++ b/automotive/audiocontrol/aidl/default/Android.bp
@@ -29,8 +29,9 @@
     vendor: true,
     shared_libs: [
         "android.hardware.audio.common@7.0-enums",
+        "android.hardware.audio.common-V1-ndk",
         "android.frameworks.automotive.powerpolicy-V1-ndk",
-        "android.hardware.automotive.audiocontrol-V1-ndk",
+        "android.hardware.automotive.audiocontrol-V2-ndk",
         "libbase",
         "libbinder_ndk",
         "libcutils",
diff --git a/automotive/audiocontrol/aidl/default/AudioControl.cpp b/automotive/audiocontrol/aidl/default/AudioControl.cpp
index c0bc796..a121f8b 100644
--- a/automotive/audiocontrol/aidl/default/AudioControl.cpp
+++ b/automotive/audiocontrol/aidl/default/AudioControl.cpp
@@ -30,6 +30,8 @@
 #include <android_audio_policy_configuration_V7_0-enums.h>
 #include <private/android_filesystem_config.h>
 
+#include <numeric>
+
 #include <stdio.h>
 
 namespace aidl::android::hardware::automotive::audiocontrol {
@@ -147,6 +149,47 @@
     return ndk::ScopedAStatus::ok();
 }
 
+template <typename aidl_type>
+static inline std::string toString(const std::vector<aidl_type>& in_values) {
+    return std::accumulate(std::begin(in_values), std::end(in_values), std::string{},
+                           [](std::string& ls, const aidl_type& rs) {
+                               return ls += (ls.empty() ? "" : ",") + rs.toString();
+                           });
+}
+template <typename aidl_enum_type>
+static inline std::string toEnumString(const std::vector<aidl_enum_type>& in_values) {
+    return std::accumulate(std::begin(in_values), std::end(in_values), std::string{},
+                           [](std::string& ls, const aidl_enum_type& rs) {
+                               return ls += (ls.empty() ? "" : ",") + toString(rs);
+                           });
+}
+
+ndk::ScopedAStatus AudioControl::onAudioFocusChangeWithMetaData(
+        const audiohalcommon::PlaybackTrackMetadata& in_playbackMetaData, int32_t in_zoneId,
+        AudioFocusChange in_focusChange) {
+    LOG(INFO) << "Focus changed: " << toString(in_focusChange).c_str() << " for metadata "
+              << in_playbackMetaData.toString().c_str() << " in zone " << in_zoneId;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AudioControl::setAudioDeviceGainsChanged(
+        const std::vector<Reasons>& in_reasons, const std::vector<AudioGainConfigInfo>& in_gains) {
+    LOG(INFO) << "Audio Device Gains changed: resons:" << toEnumString(in_reasons).c_str()
+              << " for devices: " << toString(in_gains).c_str();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AudioControl::registerGainCallback(
+        const std::shared_ptr<IAudioGainCallback>& in_callback) {
+    LOG(DEBUG) << ": " << __func__;
+    if (in_callback) {
+        std::atomic_store(&mAudioGainCallback, in_callback);
+    } else {
+        LOG(ERROR) << "Unexpected nullptr for audio gain callback resulting in no-op.";
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
 binder_status_t AudioControl::dump(int fd, const char** args, uint32_t numArgs) {
     if (numArgs == 0) {
         return dumpsys(fd);
@@ -159,6 +202,12 @@
         return cmdRequestFocus(fd, args, numArgs);
     } else if (EqualsIgnoreCase(option, "--abandon")) {
         return cmdAbandonFocus(fd, args, numArgs);
+    } else if (EqualsIgnoreCase(option, "--requestFocusWithMetaData")) {
+        return cmdRequestFocusWithMetaData(fd, args, numArgs);
+    } else if (EqualsIgnoreCase(option, "--abandonFocusWithMetaData")) {
+        return cmdAbandonFocusWithMetaData(fd, args, numArgs);
+    } else if (EqualsIgnoreCase(option, "--audioGainCallback")) {
+        return cmdOnAudioDeviceGainsChanged(fd, args, numArgs);
     } else {
         dprintf(fd, "Invalid option: %s\n", option.c_str());
         return STATUS_BAD_VALUE;
@@ -171,20 +220,49 @@
     } else {
         dprintf(fd, "Focus listener registered\n");
     }
+    dprintf(fd, "AudioGainCallback %sregistered\n", (mAudioGainCallback == nullptr ? "NOT " : ""));
     return STATUS_OK;
 }
 
 binder_status_t AudioControl::cmdHelp(int fd) const {
     dprintf(fd, "Usage: \n\n");
-    dprintf(fd, "[no args]: dumps focus listener status\n");
+    dprintf(fd, "[no args]: dumps focus listener / gain callback registered status\n");
     dprintf(fd, "--help: shows this help\n");
     dprintf(fd,
             "--request <USAGE> <ZONE_ID> <FOCUS_GAIN>: requests audio focus for specified "
-            "usage (string), audio zone ID (int), and focus gain type (int)\n");
+            "usage (string), audio zone ID (int), and focus gain type (int)\n"
+            "Deprecated, use MetaData instead\n");
     dprintf(fd,
             "--abandon <USAGE> <ZONE_ID>: abandons audio focus for specified usage (string) and "
-            "audio zone ID (int)\n");
+            "audio zone ID (int)\n"
+            "Deprecated, use MetaData instead\n");
     dprintf(fd, "See audio_policy_configuration.xsd for valid AudioUsage values.\n");
+
+    dprintf(fd,
+            "--requestFocusWithMetaData <METADATA> <ZONE_ID> <FOCUS_GAIN>: "
+            "requests audio focus for specified metadata, audio zone ID (int), "
+            "and focus gain type (int)\n");
+    dprintf(fd,
+            "--abandonFocusWithMetaData <METADATA> <ZONE_ID>: "
+            "abandons audio focus for specified metadata and audio zone ID (int)\n");
+    dprintf(fd,
+            "--audioGainCallback <ZONE_ID> <REASON_1>[,<REASON_N> ...]"
+            "<DEVICE_ADDRESS_1> <GAIN_INDEX_1> [<DEVICE_ADDRESS_N> <GAIN_INDEX_N> ...]: fire audio "
+            "gain callback for audio zone ID (int), the given reasons (csv int) for given pairs "
+            "of device address (string) and gain index (int) \n");
+
+    dprintf(fd,
+            "Note on <METADATA>: <USAGE,CONTENT_TYPE[,TAGS]>  specified as where (int)usage, "
+            "(int)content type and tags (string)string)\n");
+    dprintf(fd,
+            "See android/media/audio/common/AudioUsageType.aidl for valid AudioUsage values.\n");
+    dprintf(fd,
+            "See android/media/audio/common/AudioContentType.aidl for valid AudioContentType "
+            "values.\n");
+    dprintf(fd,
+            "Tags are optional. If provided, it must follow the <key>=<value> pattern, where the "
+            "value is namespaced (for example com.google.strategy=VR).\n");
+
     return STATUS_OK;
 }
 
@@ -266,4 +344,174 @@
     return STATUS_OK;
 }
 
+binder_status_t AudioControl::parseMetaData(int fd, const std::string& metadataLiteral,
+                                            audiohalcommon::PlaybackTrackMetadata& trackMetadata) {
+    std::stringstream csvMetaData(metadataLiteral);
+    std::vector<std::string> splitMetaData;
+    std::string attribute;
+    while (getline(csvMetaData, attribute, ',')) {
+        splitMetaData.push_back(attribute);
+    }
+    if (splitMetaData.size() != 2 && splitMetaData.size() != 3) {
+        dprintf(fd,
+                "Invalid metadata: %s, please provide <METADATA> as <USAGE,CONTENT_TYPE[,TAGS]> "
+                "where (int)usage, (int)content type and tags (string)string)\n",
+                metadataLiteral.c_str());
+        return STATUS_BAD_VALUE;
+    }
+    int usage;
+    if (!safelyParseInt(splitMetaData[0], &usage)) {
+        dprintf(fd, "Non-integer usage provided with request: %s\n", splitMetaData[0].c_str());
+        return STATUS_BAD_VALUE;
+    }
+    int contentType;
+    if (!safelyParseInt(splitMetaData[1], &contentType)) {
+        dprintf(fd, "Non-integer content type provided with request: %s\n",
+                splitMetaData[1].c_str());
+        return STATUS_BAD_VALUE;
+    }
+    const std::string tags = (splitMetaData.size() == 3 ? splitMetaData[2] : "");
+
+    trackMetadata = {.usage = static_cast<audiomediacommon::AudioUsage>(usage),
+                     .contentType = static_cast<audiomediacommon::AudioContentType>(contentType),
+                     .tags = {tags}};
+    return STATUS_OK;
+}
+
+binder_status_t AudioControl::cmdRequestFocusWithMetaData(int fd, const char** args,
+                                                          uint32_t numArgs) {
+    if (!checkCallerHasWritePermissions(fd)) {
+        return STATUS_PERMISSION_DENIED;
+    }
+    if (numArgs != 4) {
+        dprintf(fd,
+                "Invalid number of arguments: please provide:\n"
+                "--requestFocusWithMetaData <METADATA> <ZONE_ID> <FOCUS_GAIN>: "
+                "requests audio focus for specified metadata, audio zone ID (int), "
+                "and focus gain type (int)\n");
+        return STATUS_BAD_VALUE;
+    }
+    std::string metadataLiteral = std::string(args[1]);
+    audiohalcommon::PlaybackTrackMetadata trackMetadata{};
+    auto status = parseMetaData(fd, metadataLiteral, trackMetadata);
+    if (status != STATUS_OK) {
+        return status;
+    }
+
+    int zoneId;
+    if (!safelyParseInt(std::string(args[2]), &zoneId)) {
+        dprintf(fd, "Non-integer zoneId provided with request: %s\n", std::string(args[2]).c_str());
+        return STATUS_BAD_VALUE;
+    }
+
+    int focusGainValue;
+    if (!safelyParseInt(std::string(args[3]), &focusGainValue)) {
+        dprintf(fd, "Non-integer focusGain provided with request: %s\n",
+                std::string(args[3]).c_str());
+        return STATUS_BAD_VALUE;
+    }
+    AudioFocusChange focusGain = AudioFocusChange(focusGainValue);
+
+    if (mFocusListener == nullptr) {
+        dprintf(fd, "Unable to request focus - no focus listener registered\n");
+        return STATUS_BAD_VALUE;
+    }
+    mFocusListener->requestAudioFocusWithMetaData(trackMetadata, zoneId, focusGain);
+    dprintf(fd, "Requested focus for metadata %s, zoneId %d, and focusGain %d\n",
+            trackMetadata.toString().c_str(), zoneId, focusGain);
+    return STATUS_OK;
+}
+
+binder_status_t AudioControl::cmdAbandonFocusWithMetaData(int fd, const char** args,
+                                                          uint32_t numArgs) {
+    if (!checkCallerHasWritePermissions(fd)) {
+        return STATUS_PERMISSION_DENIED;
+    }
+    if (numArgs != 3) {
+        dprintf(fd,
+                "Invalid number of arguments: please provide:\n"
+                "--abandonFocusWithMetaData <METADATA> <ZONE_ID>: "
+                "abandons audio focus for specified metadata and audio zone ID (int)\n");
+        return STATUS_BAD_VALUE;
+    }
+    std::string metadataLiteral = std::string(args[1]);
+    audiohalcommon::PlaybackTrackMetadata trackMetadata{};
+    auto status = parseMetaData(fd, metadataLiteral, trackMetadata);
+    if (status != STATUS_OK) {
+        return status;
+    }
+    int zoneId;
+    if (!safelyParseInt(std::string(args[2]), &zoneId)) {
+        dprintf(fd, "Non-integer zoneId provided with request: %s\n", std::string(args[2]).c_str());
+        return STATUS_BAD_VALUE;
+    }
+    if (mFocusListener == nullptr) {
+        dprintf(fd, "Unable to abandon focus - no focus listener registered\n");
+        return STATUS_BAD_VALUE;
+    }
+
+    mFocusListener->abandonAudioFocusWithMetaData(trackMetadata, zoneId);
+    dprintf(fd, "Abandoned focus for metadata %s and zoneId %d\n", trackMetadata.toString().c_str(),
+            zoneId);
+    return STATUS_OK;
+}
+
+binder_status_t AudioControl::cmdOnAudioDeviceGainsChanged(int fd, const char** args,
+                                                           uint32_t numArgs) {
+    if (!checkCallerHasWritePermissions(fd)) {
+        return STATUS_PERMISSION_DENIED;
+    }
+    if ((numArgs + 1) % 2 != 0) {
+        dprintf(fd,
+                "Invalid number of arguments: please provide\n"
+                "--audioGainCallback <ZONE_ID> <REASON_1>[,<REASON_N> ...]"
+                "<DEVICE_ADDRESS_1> <GAIN_INDEX_1> [<DEVICE_ADDRESS_N> <GAIN_INDEX_N> ...]: "
+                "fire audio gain callback for audio zone ID (int), "
+                "with the given reasons (csv int) for given pairs of device address (string) "
+                "and gain index (int) \n");
+        return STATUS_BAD_VALUE;
+    }
+    int zoneId;
+    if (!safelyParseInt(string(args[1]), &zoneId)) {
+        dprintf(fd, "Non-integer zoneId provided with request: %s\n", std::string(args[1]).c_str());
+        return STATUS_BAD_VALUE;
+    }
+    std::string reasonsLiteral = std::string(args[2]);
+    std::stringstream csvReasonsLiteral(reasonsLiteral);
+    std::vector<Reasons> reasons;
+    std::string reasonLiteral;
+    while (getline(csvReasonsLiteral, reasonLiteral, ',')) {
+        int reason;
+        if (!safelyParseInt(reasonLiteral, &reason)) {
+            dprintf(fd, "Invalid Reason(s) provided %s\n", reasonLiteral.c_str());
+            return STATUS_BAD_VALUE;
+        }
+        reasons.push_back(static_cast<Reasons>(reason));
+    }
+
+    std::vector<AudioGainConfigInfo> agcis{};
+    for (uint32_t i = 3; i < numArgs; i += 2) {
+        std::string deviceAddress = std::string(args[i]);
+        int32_t index;
+        if (!safelyParseInt(std::string(args[i + 1]), &index)) {
+            dprintf(fd, "Non-integer index provided with request: %s\n",
+                    std::string(args[i + 1]).c_str());
+            return STATUS_BAD_VALUE;
+        }
+        AudioGainConfigInfo agci{zoneId, deviceAddress, index};
+        agcis.push_back(agci);
+    }
+    if (mAudioGainCallback == nullptr) {
+        dprintf(fd,
+                "Unable to trig audio gain callback for reasons=%s and gains=%s\n"
+                " - no audio gain callback registered\n",
+                toEnumString(reasons).c_str(), toString(agcis).c_str());
+        return STATUS_BAD_VALUE;
+    }
+
+    mAudioGainCallback->onAudioDeviceGainsChanged(reasons, agcis);
+    dprintf(fd, "Fired audio gain callback for reasons=%s and gains=%s\n",
+            toEnumString(reasons).c_str(), toString(agcis).c_str());
+    return STATUS_OK;
+}
 }  // namespace aidl::android::hardware::automotive::audiocontrol
diff --git a/automotive/audiocontrol/aidl/default/AudioControl.h b/automotive/audiocontrol/aidl/default/AudioControl.h
index cca9c44..16b80e8 100644
--- a/automotive/audiocontrol/aidl/default/AudioControl.h
+++ b/automotive/audiocontrol/aidl/default/AudioControl.h
@@ -17,12 +17,20 @@
 #define ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H
 
 #include <aidl/android/hardware/automotive/audiocontrol/AudioFocusChange.h>
+#include <aidl/android/hardware/automotive/audiocontrol/AudioGainConfigInfo.h>
 #include <aidl/android/hardware/automotive/audiocontrol/BnAudioControl.h>
 #include <aidl/android/hardware/automotive/audiocontrol/DuckingInfo.h>
+#include <aidl/android/hardware/automotive/audiocontrol/IAudioGainCallback.h>
 #include <aidl/android/hardware/automotive/audiocontrol/MutingInfo.h>
+#include <aidl/android/hardware/automotive/audiocontrol/Reasons.h>
+
+#include <aidl/android/hardware/audio/common/PlaybackTrackMetadata.h>
 
 namespace aidl::android::hardware::automotive::audiocontrol {
 
+namespace audiohalcommon = ::aidl::android::hardware::audio::common;
+namespace audiomediacommon = ::aidl::android::media::audio::common;
+
 class AudioControl : public BnAudioControl {
   public:
     ndk::ScopedAStatus onAudioFocusChange(const std::string& in_usage, int32_t in_zoneId,
@@ -35,6 +43,15 @@
             const std::shared_ptr<IFocusListener>& in_listener) override;
     ndk::ScopedAStatus setBalanceTowardRight(float in_value) override;
     ndk::ScopedAStatus setFadeTowardFront(float in_value) override;
+    ndk::ScopedAStatus onAudioFocusChangeWithMetaData(
+            const audiohalcommon::PlaybackTrackMetadata& in_playbackMetaData, int32_t in_zoneId,
+            AudioFocusChange in_focusChange) override;
+    ndk::ScopedAStatus setAudioDeviceGainsChanged(
+            const std::vector<Reasons>& in_reasons,
+            const std::vector<AudioGainConfigInfo>& in_gains) override;
+    ndk::ScopedAStatus registerGainCallback(
+            const std::shared_ptr<IAudioGainCallback>& in_callback) override;
+
     binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
 
   private:
@@ -44,9 +61,22 @@
     // listener, then it should also include mutexes or make the listener atomic.
     std::shared_ptr<IFocusListener> mFocusListener;
 
+    /**
+     * @brief mAudioGainCallback will be used by this HAL instance to communicate e.g. with a single
+     * instance of CarAudioService to report unexpected gain changed.
+     */
+    std::shared_ptr<IAudioGainCallback> mAudioGainCallback = nullptr;
+
     binder_status_t cmdHelp(int fd) const;
     binder_status_t cmdRequestFocus(int fd, const char** args, uint32_t numArgs);
     binder_status_t cmdAbandonFocus(int fd, const char** args, uint32_t numArgs);
+    binder_status_t cmdRequestFocusWithMetaData(int fd, const char** args, uint32_t numArgs);
+    binder_status_t cmdAbandonFocusWithMetaData(int fd, const char** args, uint32_t numArgs);
+    binder_status_t cmdOnAudioDeviceGainsChanged(int fd, const char** args, uint32_t numArgs);
+
+    binder_status_t parseMetaData(int fd, const std::string& metadataLiteral,
+                                  audiohalcommon::PlaybackTrackMetadata& trackMetadata);
+
     binder_status_t dumpsys(int fd);
 };
 
diff --git a/automotive/audiocontrol/aidl/default/audiocontrol-default.xml b/automotive/audiocontrol/aidl/default/audiocontrol-default.xml
index f95d05f..e82f6fa 100644
--- a/automotive/audiocontrol/aidl/default/audiocontrol-default.xml
+++ b/automotive/audiocontrol/aidl/default/audiocontrol-default.xml
@@ -1,4 +1,4 @@
-<manifest version="1.0" type="device">
+<manifest version="2.0" type="device">
     <hal format="aidl">
         <name>android.hardware.automotive.audiocontrol</name>
         <fqname>IAudioControl/default</fqname>