diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 9ccbcc0..a0f37bc 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -2912,6 +2912,9 @@
             adev->offload_effects_stop_output(out->handle, out->pcm_device_id);
     }
 
+    if (out->usecase == USECASE_INCALL_MUSIC_UPLINK)
+        voice_set_device_mute_flag(adev, false);
+
     /* 1. Get and set stream specific mixer controls */
     disable_audio_route(adev, uc_info);
 
@@ -3071,6 +3074,9 @@
          select_devices(adev, out->usecase);
     }
 
+    if (out->usecase == USECASE_INCALL_MUSIC_UPLINK)
+        voice_set_device_mute_flag(adev, true);
+
     ALOGV("%s: Opening PCM device card_id(%d) device_id(%d) format(%#x)",
           __func__, adev->snd_card, out->pcm_device_id, out->config.format);
 
diff --git a/hal/voice.c b/hal/voice.c
index f9e3562..fc38ab2 100644
--- a/hal/voice.c
+++ b/hal/voice.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2017, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
  * Not a contribution.
  *
  * Copyright (C) 2013 The Android Open Source Project
@@ -228,6 +228,7 @@
 
     uc_info->in_snd_device = SND_DEVICE_NONE;
     uc_info->out_snd_device = SND_DEVICE_NONE;
+    adev->voice.use_device_mute = false;
 
     if (audio_is_bluetooth_sco_device(uc_info->devices) && !adev->bt_sco_on) {
         ALOGE("start_call: couldn't find BT SCO, SCO is not ready");
@@ -338,10 +339,10 @@
        return in_call_rec;
     }
 
-    if(in->source == AUDIO_SOURCE_VOICE_DOWNLINK ||
-       in->source == AUDIO_SOURCE_VOICE_UPLINK ||
-       in->source == AUDIO_SOURCE_VOICE_CALL) {
-       in_call_rec = true;
+    if (in->source == AUDIO_SOURCE_VOICE_DOWNLINK ||
+        in->source == AUDIO_SOURCE_VOICE_UPLINK ||
+        in->source == AUDIO_SOURCE_VOICE_CALL) {
+            in_call_rec = true;
     }
 
     return in_call_rec;
@@ -476,13 +477,21 @@
     int err = 0;
 
     adev->voice.mic_mute = state;
+
     if (audio_extn_hfp_is_active(adev)) {
         err = hfp_set_mic_mute(adev, state);
     } else if (adev->mode == AUDIO_MODE_IN_CALL) {
-        err = platform_set_mic_mute(adev->platform, state);
+       /* Use device mute if incall music delivery usecase is in progress */
+        if (adev->voice.use_device_mute)
+            err = platform_set_device_mute(adev->platform, state, "tx");
+        else
+            err = platform_set_mic_mute(adev->platform, state);
+        ALOGV("%s: voice mute status=%d, use_device_mute flag=%d",
+            __func__, state, adev->voice.use_device_mute);
     } else if (adev->mode == AUDIO_MODE_IN_COMMUNICATION) {
         err = voice_extn_compress_voip_set_mic_mute(adev, state);
     }
+
     return err;
 }
 
@@ -491,6 +500,27 @@
     return adev->voice.mic_mute;
 }
 
+/*
+ * Following function is called when incall music uplink usecase is
+ * created or destroyed while mic is muted. If incall music uplink
+ * usecase is active, apply voice device mute to mute only voice Tx
+ * path and not the mixed voice Tx + inncall-music path. Revert to
+ * voice stream mute once incall music uplink usecase is inactive
+ */
+void voice_set_device_mute_flag(struct audio_device *adev, bool state)
+{
+    if (adev->voice.mic_mute) {
+        if (state) {
+            platform_set_device_mute(adev->platform, true, "tx");
+            platform_set_mic_mute(adev->platform, false);
+        } else {
+            platform_set_mic_mute(adev->platform, true);
+            platform_set_device_mute(adev->platform, false, "tx");
+        }
+    }
+    adev->voice.use_device_mute = state;
+}
+
 int voice_set_volume(struct audio_device *adev, float volume)
 {
     int vol, err = 0;
diff --git a/hal/voice.h b/hal/voice.h
index 3ae42a8..2ef790a 100644
--- a/hal/voice.h
+++ b/hal/voice.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
  * Not a contribution.
  *
  * Copyright (C) 2013 The Android Open Source Project
@@ -61,6 +61,7 @@
     struct voice_session session[MAX_VOICE_SESSIONS];
     int tty_mode;
     bool mic_mute;
+    bool use_device_mute;
     float volume;
     bool in_call;
 };
@@ -101,4 +102,6 @@
                                       snd_device_t out_snd_device,
                                       bool enable);
 bool voice_is_call_state_active(struct audio_device *adev);
+void voice_set_device_mute_flag (struct audio_device *adev, bool state);
+
 #endif //VOICE_H