diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index ae102fc..1c0b749 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -2405,7 +2405,8 @@
         bool isSpatialized,
         bool isBitPerfect,
         audio_output_flags_t *afTrackFlags,
-        float volume)
+        float volume,
+        bool muted)
 {
     size_t frameCount = *pFrameCount;
     size_t notificationFrameCount = *pNotificationFrameCount;
@@ -2734,7 +2735,7 @@
                           nullptr /* buffer */, (size_t)0 /* bufferSize */, sharedBuffer,
                           sessionId, creatorPid, attributionSource, trackFlags,
                           IAfTrackBase::TYPE_DEFAULT, portId, SIZE_MAX /*frameCountToBeReady*/,
-                          speed, isSpatialized, isBitPerfect, volume);
+                          speed, isSpatialized, isBitPerfect, volume, muted);
 
         lStatus = track != 0 ? track->initCheck() : (status_t) NO_MEMORY;
         if (lStatus != NO_ERROR) {
@@ -2842,10 +2843,14 @@
     }
 }
 
-void PlaybackThread::setStreamVolume(audio_stream_type_t stream, float value)
+void PlaybackThread::setStreamVolume(audio_stream_type_t stream, float value, bool muted)
 {
+    ALOGV("%s: stream %d value %f muted %d", __func__, stream, value, muted);
     audio_utils::lock_guard _l(mutex());
     mStreamTypes[stream].volume = value;
+    if (com_android_media_audio_ring_my_car()) {
+        mStreamTypes[stream].mute = muted;
+    }
     broadcast_l();
 }
 
@@ -2863,13 +2868,14 @@
 }
 
 status_t PlaybackThread::setPortsVolume(
-        const std::vector<audio_port_handle_t>& portIds, float volume) {
+        const std::vector<audio_port_handle_t>& portIds, float volume, bool muted) {
     audio_utils::lock_guard _l(mutex());
     for (const auto& portId : portIds) {
         for (size_t i = 0; i < mTracks.size(); i++) {
             sp<IAfTrack> track = mTracks[i].get();
             if (portId == track->portId()) {
                 track->setPortVolume(volume);
+                track->setPortMute(muted);
                 break;
             }
         }
@@ -5859,7 +5865,7 @@
                         volume = masterVolume * mStreamTypes[track->streamType()].volume;
                     }
                 } else {
-                    if (track->isPlaybackRestricted()) {
+                    if (track->isPlaybackRestricted() || track->getPortMute()) {
                         volume = 0.f;
                     } else {
                         volume = masterVolume * track->getPortVolume();
@@ -5883,7 +5889,8 @@
                                            mStreamTypes[track->streamType()].mute,
                                            track->isPlaybackRestricted(),
                                            vlf == 0.f && vrf == 0.f,
-                                           vh == 0.f});
+                                           vh == 0.f,
+                                           /*muteFromPortVolume=*/false});
                 } else {
                     track->processMuteEvent_l(mAfThreadCallback->getOrCreateAudioManager(),
                             /*muteState=*/{masterVolume == 0.f,
@@ -5891,7 +5898,8 @@
                                            /* muteFromStreamMuted= */ false,
                                            track->isPlaybackRestricted(),
                                            vlf == 0.f && vrf == 0.f,
-                                           vh == 0.f});
+                                           vh == 0.f,
+                                           track->getPortMute()});
                 }
                 vlf *= volume;
                 vrf *= volume;
@@ -6055,7 +6063,7 @@
                 }
             } else {
                 v = masterVolume * track->getPortVolume();
-                if (track->isPlaybackRestricted()) {
+                if (track->isPlaybackRestricted() || track->getPortMute()) {
                     v = 0;
                 }
             }
@@ -6085,7 +6093,8 @@
                                            mStreamTypes[track->streamType()].mute,
                                            track->isPlaybackRestricted(),
                                            vlf == 0.f && vrf == 0.f,
-                                           vh == 0.f});
+                                           vh == 0.f,
+                                           /*muteFromPortVolume=*/false});
                 } else {
                     track->processMuteEvent_l(mAfThreadCallback->getOrCreateAudioManager(),
                             /*muteState=*/{masterVolume == 0.f,
@@ -6093,7 +6102,8 @@
                                            /* muteFromStreamMuted= */ false,
                                            track->isPlaybackRestricted(),
                                            vlf == 0.f && vrf == 0.f,
-                                           vh == 0.f});
+                                           vh == 0.f,
+                                           track->getPortMute()});
                 }
                 // now apply the master volume and stream type volume and shaper volume
                 vlf *= v * vh;
@@ -6851,7 +6861,8 @@
                                mStreamTypes[track->streamType()].mute,
                                track->isPlaybackRestricted(),
                                clientVolumeMute,
-                               shaperVolume == 0.f});
+                               shaperVolume == 0.f,
+                               /*muteFromPortVolume=*/false});
     } else {
         if (mMasterMute || track->isPlaybackRestricted()) {
             left = right = 0;
@@ -6879,7 +6890,8 @@
                                /* muteFromStreamMuted= */ false,
                                track->isPlaybackRestricted(),
                                clientVolumeMute,
-                               shaperVolume == 0.f});
+                               shaperVolume == 0.f,
+                               track->getPortMute()});
     }
 
     if (lastTrack) {
@@ -7981,8 +7993,9 @@
         return;
     }
     if (!audioserver_flags::portid_volume_management()) {
-        thread->setStreamVolume(AUDIO_STREAM_PATCH, 1.0f);
+        thread->setStreamVolume(AUDIO_STREAM_PATCH, /*volume=*/1.0f, /*muted=*/false);
     }
+
     mOutputTracks.add(outputTrack);
     ALOGV("addOutputTrack() track %p, on thread %p", outputTrack.get(), thread);
     updateWaitTime_l();
@@ -10486,6 +10499,7 @@
     const auto localSessionId = mSessionId;
     auto localAttr = mAttr;
     float volume = 0.0f;
+    bool muted = false;
     if (isOutput()) {
         audio_config_t config = AUDIO_CONFIG_INITIALIZER;
         config.sample_rate = mSampleRate;
@@ -10510,7 +10524,8 @@
                                             &secondaryOutputs,
                                             &isSpatialized,
                                             &isBitPerfect,
-                                            &volume);
+                                            &volume,
+                                            &muted);
         mutex().lock();
         mAttr = localAttr;
         ALOGD_IF(!secondaryOutputs.empty(),
@@ -10580,7 +10595,7 @@
                                         mChannelMask, mSessionId, isOutput(),
                                         client.attributionSource,
                                         IPCThreadState::self()->getCallingPid(), portId,
-                                        volume);
+                                        volume, muted);
     if (!isOutput()) {
         track->setSilenced_l(isClientSilenced_l(portId));
     }
@@ -11238,10 +11253,14 @@
     }
 }
 
-void MmapPlaybackThread::setStreamVolume(audio_stream_type_t stream, float value)
+void MmapPlaybackThread::setStreamVolume(audio_stream_type_t stream, float value, bool muted)
 {
+    ALOGV("%s: stream %d value %f muted %d", __func__, stream, value, muted);
     audio_utils::lock_guard _l(mutex());
     mStreamTypes[stream].volume = value;
+    if (com_android_media_audio_ring_my_car()) {
+        mStreamTypes[stream].mute = muted;
+    }
     if (stream == mStreamType) {
         broadcast_l();
     }
@@ -11263,12 +11282,13 @@
 }
 
 status_t MmapPlaybackThread::setPortsVolume(
-        const std::vector<audio_port_handle_t>& portIds, float volume) {
+        const std::vector<audio_port_handle_t>& portIds, float volume, bool muted) {
     audio_utils::lock_guard _l(mutex());
     for (const auto& portId : portIds) {
         for (const sp<IAfMmapTrack>& track : mActiveTracks) {
             if (portId == track->portId()) {
                 track->setPortVolume(volume);
+                track->setPortMute(muted);
                 break;
             }
         }
@@ -11326,7 +11346,11 @@
             // will be broadcasted to all tracks. Thus, take arbitrarily first track volume.
             size_t numtracks = mActiveTracks.size();
             if (numtracks) {
-                volume = mMasterVolume * mActiveTracks[0]->getPortVolume();
+                if (mActiveTracks[0]->getPortMute()) {
+                    volume = 0;
+                } else {
+                    volume = mMasterVolume * mActiveTracks[0]->getPortVolume();
+                }
             }
         }
     }
@@ -11370,7 +11394,8 @@
                         // TODO(b/241533526): adjust logic to include mute from AppOps
                         false /*muteFromPlaybackRestricted*/,
                         false /*muteFromClientVolume*/,
-                        false /*muteFromVolumeShaper*/});
+                        false /*muteFromVolumeShaper*/,
+                        false /*muteFromPortVolume*/});
             } else {
                 track->processMuteEvent_l(mAfThreadCallback->getOrCreateAudioManager(),
                     /*muteState=*/{mMasterMute,
@@ -11379,7 +11404,8 @@
                                    // TODO(b/241533526): adjust logic to include mute from AppOps
                                    false /*muteFromPlaybackRestricted*/,
                                    false /*muteFromClientVolume*/,
-                                   false /*muteFromVolumeShaper*/});
+                                   false /*muteFromVolumeShaper*/,
+                                   track->getPortMute()});
                 }
         }
     }