diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 9510ea1..0a0fc1c 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -2258,7 +2258,8 @@
                                  (usecase->devices & AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND)) ||
                                  ((vc_usecase->devices & AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND) &&
                                  (usecase->devices & AUDIO_DEVICE_IN_ALL_CODEC_BACKEND)) ||
-                                (usecase->devices == AUDIO_DEVICE_IN_VOICE_CALL))) {
+                                 (vc_usecase->devices == AUDIO_DEVICE_OUT_HEARING_AID) ||
+                                 (usecase->devices == AUDIO_DEVICE_IN_VOICE_CALL))) {
                 in_snd_device = vc_usecase->in_snd_device;
                 out_snd_device = vc_usecase->out_snd_device;
             }
@@ -2335,6 +2336,10 @@
                     platform_set_echo_reference(adev, false, AUDIO_DEVICE_NONE);
                 } else if (usecase->id == USECASE_AUDIO_RECORD_AFE_PROXY) {
                     out_device = AUDIO_DEVICE_OUT_TELEPHONY_TX;
+                } else {
+                    /* forcing speaker o/p device to get matching i/p pair
+                       in case o/p is not routed from same primary HAL */
+                    out_device = AUDIO_DEVICE_OUT_SPEAKER;
                 }
                 in_snd_device = platform_get_input_snd_device(adev->platform, out_device);
             }
@@ -3186,13 +3191,19 @@
             ALOGE("%s: audio_extn_ip_hdlr_intf_close failed %d",__func__, ret);
     }
 
+    /* 1) media + voip output routing to handset must route media back to
+          speaker when voip stops.
+       2) trigger voip input to reroute when voip output changes to
+          hearing aid. */
     if (has_voip_usecase ||
             out->devices & AUDIO_DEVICE_OUT_SPEAKER_SAFE) {
         struct listnode *node;
         struct audio_usecase *usecase;
         list_for_each(node, &adev->usecase_list) {
             usecase = node_to_item(node, struct audio_usecase, list);
-            if (usecase->type == PCM_CAPTURE || usecase == uc_info)
+            if ((usecase->type == PCM_CAPTURE &&
+                     usecase->id != USECASE_AUDIO_RECORD_VOIP)
+                || usecase == uc_info)
                 continue;
 
             ALOGD("%s: select_devices at usecase(%d: %s) after removing the usecase(%d: %s)",
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 095028d..7ba8ae7 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -551,6 +551,7 @@
     [SND_DEVICE_OUT_SPEAKER_WSA_AND_BT_SCO] = "wsa-speaker-and-bt-sco",
     [SND_DEVICE_OUT_SPEAKER_WSA_AND_BT_SCO_WB] = "wsa-speaker-and-bt-sco-wb",
     [SND_DEVICE_OUT_SPEAKER_WSA_AND_BT_SCO_SWB] = "wsa-speaker-and-bt-sco-wb",
+    [SND_DEVICE_OUT_VOICE_HEARING_AID] = "hearing-aid",
 
     /* Capture sound devices */
     [SND_DEVICE_IN_HANDSET_MIC] = "handset-mic",
@@ -682,6 +683,7 @@
     [SND_DEVICE_OUT_VOIP_HANDSET] = "voip-handset",
     [SND_DEVICE_OUT_VOIP_SPEAKER] = "voip-speaker",
     [SND_DEVICE_OUT_VOIP_HEADPHONES] = "voip-headphones",
+    [SND_DEVICE_IN_VOICE_HEARING_AID] = "hearing-aid-mic",
 };
 
 // Platform specific backend bit width table
@@ -802,6 +804,7 @@
     [SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_PROTECTED] = 124,
     [SND_DEVICE_OUT_SPEAKER_PROTECTED_RAS] = 134,
     [SND_DEVICE_OUT_SPEAKER_PROTECTED_VBAT_RAS] = 134,
+    [SND_DEVICE_OUT_VOICE_HEARING_AID] = 45,
     [SND_DEVICE_IN_HANDSET_MIC] = 4,
     [SND_DEVICE_IN_HANDSET_MIC_SB] = 163,
     [SND_DEVICE_IN_HANDSET_MIC_EXTERNAL] = 4,
@@ -928,6 +931,7 @@
     [SND_DEVICE_IN_CAMCORDER_SELFIE_LANDSCAPE] = 4,
     [SND_DEVICE_IN_CAMCORDER_SELFIE_INVERT_LANDSCAPE] = 4,
     [SND_DEVICE_IN_CAMCORDER_SELFIE_PORTRAIT] = 4,
+    [SND_DEVICE_IN_VOICE_HEARING_AID] = 44,
 };
 
 struct name_to_index {
@@ -1022,6 +1026,7 @@
     {TO_NAME_INDEX(SND_DEVICE_OUT_VOIP_HANDSET)},
     {TO_NAME_INDEX(SND_DEVICE_OUT_VOIP_SPEAKER)},
     {TO_NAME_INDEX(SND_DEVICE_OUT_VOIP_HEADPHONES)},
+    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_HEARING_AID)},
     {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_MIC)},
     {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_MIC_SB)},
     {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_MIC_EXTERNAL)},
@@ -1118,6 +1123,7 @@
     {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_QMIC)},
     {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_QMIC_AEC)},
     {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_QMIC_AEC)},
+    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_HEARING_AID)},
     {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_QMIC_NS)},
     {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_QMIC_AEC_NS)},
     {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_REC_QMIC_FLUENCE)},
@@ -1992,6 +1998,7 @@
     backend_tag_table[SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_HEADPHONES] = strdup("speaker-and-headphones");
     backend_tag_table[SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_HEADSET] = strdup("speaker-and-headphones");
     backend_tag_table[SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_FB_HEADSET] = strdup("speaker-and-headphones");
+    backend_tag_table[SND_DEVICE_OUT_VOICE_HEARING_AID] = strdup("hearing-aid");
 
     hw_interface_table[SND_DEVICE_OUT_HANDSET] = strdup("SLIMBUS_0_RX");
     hw_interface_table[SND_DEVICE_OUT_SPEAKER] = strdup("SLIMBUS_0_RX");
@@ -2077,6 +2084,10 @@
     hw_interface_table[SND_DEVICE_OUT_SPEAKER_WSA] = strdup("SLIMBUS_0_RX");
     hw_interface_table[SND_DEVICE_OUT_VOICE_SPEAKER_WSA] = strdup("SLIMBUS_0_RX");
     hw_interface_table[SND_DEVICE_OUT_VOICE_SPEAKER_2_WSA] = strdup("SLIMBUS_0_RX");
+    /* So far, primary hal doesn't support hearing aid device.
+       Need snd_device to route voice call and use specific acdb tuning.
+       Also, BT_RX is a virtual port to indicate bluetooth hearing aid. */
+    hw_interface_table[SND_DEVICE_OUT_VOICE_HEARING_AID] = strdup("BT_RX"),
     hw_interface_table[SND_DEVICE_IN_HANDSET_MIC] = strdup("SLIMBUS_0_TX");
     hw_interface_table[SND_DEVICE_IN_HANDSET_MIC_SB] = strdup("SLIMBUS_0_TX");
     hw_interface_table[SND_DEVICE_IN_HANDSET_MIC_EXTERNAL] = strdup("SLIMBUS_0_TX");
@@ -2202,6 +2213,7 @@
     hw_interface_table[SND_DEVICE_IN_CAMCORDER_SELFIE_LANDSCAPE] = strdup("SLIMBUS_0_TX");
     hw_interface_table[SND_DEVICE_IN_CAMCORDER_SELFIE_INVERT_LANDSCAPE] = strdup("SLIMBUS_0_TX");
     hw_interface_table[SND_DEVICE_IN_CAMCORDER_SELFIE_PORTRAIT] = strdup("SLIMBUS_0_TX");
+    hw_interface_table[SND_DEVICE_IN_VOICE_HEARING_AID] = strdup("SLIMBUS_0_TX");
     my_data->max_mic_count = PLATFORM_DEFAULT_MIC_COUNT;
 
      /*remove ALAC & APE from DSP decoder list based on software decoder availability*/
@@ -5373,8 +5385,11 @@
                 snd_device = SND_DEVICE_OUT_ANC_HANDSET;
             else
                 snd_device = SND_DEVICE_OUT_VOICE_HANDSET;
-        } else if (devices & AUDIO_DEVICE_OUT_TELEPHONY_TX)
+        } else if (devices & AUDIO_DEVICE_OUT_TELEPHONY_TX) {
             snd_device = SND_DEVICE_OUT_VOICE_TX;
+        } else if (devices & AUDIO_DEVICE_OUT_HEARING_AID) {
+            snd_device = SND_DEVICE_OUT_VOICE_HEARING_AID;
+        }
 
         if (snd_device != SND_DEVICE_NONE) {
             goto exit;
@@ -5910,6 +5925,8 @@
             } else {
                 snd_device = SND_DEVICE_IN_HANDSET_MIC;
             }
+        } else if (out_device & AUDIO_DEVICE_OUT_HEARING_AID) {
+            snd_device = SND_DEVICE_IN_VOICE_HEARING_AID;
         }
     } else if (my_data->use_generic_handset == true &&  //     system prop is enabled
                (my_data->source_mic_type & SOURCE_QUAD_MIC) &&  // AND 4mic is available
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 41aa346..7399d1b 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -173,6 +173,7 @@
     SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_HEADPHONES,
     SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_HEADSET,
     SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_FB_HEADSET,
+    SND_DEVICE_OUT_VOICE_HEARING_AID,
     SND_DEVICE_OUT_END,
 
     /*
@@ -308,6 +309,7 @@
     SND_DEVICE_IN_CAMCORDER_SELFIE_LANDSCAPE,
     SND_DEVICE_IN_CAMCORDER_SELFIE_INVERT_LANDSCAPE,
     SND_DEVICE_IN_CAMCORDER_SELFIE_PORTRAIT,
+    SND_DEVICE_IN_VOICE_HEARING_AID,
     SND_DEVICE_IN_END,
 
     SND_DEVICE_MAX = SND_DEVICE_IN_END,