diff --git a/configs/msmsteppe_au/mixer_paths_adp.xml b/configs/msmsteppe_au/mixer_paths_adp.xml
index e2de539..4ac4798 100644
--- a/configs/msmsteppe_au/mixer_paths_adp.xml
+++ b/configs/msmsteppe_au/mixer_paths_adp.xml
@@ -755,6 +755,11 @@
         <path name="compress-offload-playback4" />
     </path>
 
+    <path name="voice-call">
+        <!-- Added AFE loopback ctrl path for CS-Voice call-->
+        <ctl name="TERT_TDM_RX_0 Port Mixer AUX_PCM_UL_TX" value="1" />
+        <ctl name="AUX_PCM_RX Port Mixer TERT_TDM_TX_0" value="1" />
+    </path>
 
     <path name="compress-offload-playback4 afe-proxy">
         <ctl name="AFE_PCM_RX Audio Mixer MultiMedia11" value="1" />
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 3d89032..31a1e95 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -2017,7 +2017,9 @@
         !strncmp(snd_card_name, "sdx-tavil-i2s-snd-card",
                  sizeof("sdx-tavil-i2s-snd-card")) ||
         !strncmp(snd_card_name, "sda845-tavil-i2s-snd-card",
-                 sizeof("sda845-tavil-i2s-snd-card"))) {
+                 sizeof("sda845-tavil-i2s-snd-card")) ||
+        !strncmp(snd_card_name, "sa6155-adp-star-snd-card",
+                 sizeof("sa6155-adp-star-snd-card"))) {
         plat_data->is_i2s_ext_modem = true;
     }
     ALOGV("%s, is_i2s_ext_modem:%d soundcard name is %s",__func__,
@@ -2026,6 +2028,20 @@
     return plat_data->is_i2s_ext_modem;
 }
 
+static bool is_auto_snd_card(const char *snd_card_name)
+{
+    bool is_auto_snd_card = false;
+
+    if (!strncmp(snd_card_name, "sa6155-adp-star-snd-card",
+                 sizeof("sa6155-adp-star-snd-card"))) {
+        is_auto_snd_card = true;
+        ALOGV("%s : Auto snd card detected: soundcard name is %s",__func__,
+               snd_card_name);
+    }
+
+    return is_auto_snd_card;
+}
+
 static void set_platform_defaults(struct platform_data * my_data)
 {
     int32_t dev;
@@ -2923,7 +2939,8 @@
         return NULL;
     }
 
-    if (platform_is_i2s_ext_modem(snd_card_name, my_data)) {
+    if (platform_is_i2s_ext_modem(snd_card_name, my_data) &&
+        !is_auto_snd_card(snd_card_name)) {
         ALOGD("%s: Call MIXER_XML_PATH_I2S", __func__);
 
         adev->audio_route = audio_route_init(adev->snd_card,
@@ -3161,7 +3178,7 @@
 
 
     /* Initialize ACDB ID's */
-    if (my_data->is_i2s_ext_modem)
+    if (my_data->is_i2s_ext_modem && !is_auto_snd_card(snd_card_name))
         platform_info_init(PLATFORM_INFO_XML_PATH_I2S, my_data, PLATFORM);
     else if (!strncmp(snd_card_name, "sdm660-snd-card-skush",
                sizeof("sdm660-snd-card-skush")))
@@ -3360,6 +3377,7 @@
     property_get("ro.baseband", baseband, "");
     if ((!strncmp("apq8084", platform, sizeof("apq8084")) ||
         !strncmp("msm8996", platform, sizeof("msm8996")) ||
+        !strncmp("sm6150", platform, sizeof("sm6150")) ||
         !strncmp("sdx", platform, sizeof("sdx")) ||
         !strncmp("sdm845", platform, sizeof("sdm845"))) &&
         ( !strncmp("mdm", baseband, (sizeof("mdm")-1)) ||
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 1d56a7e..033bd32 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -585,6 +585,14 @@
 #define VOLTE_CALL_PCM_DEVICE 15
 #define QCHAT_CALL_PCM_DEVICE 37
 #define VOWLAN_CALL_PCM_DEVICE 16
+#elif PLATFORM_AUTO
+#define HOST_LESS_RX_ID 41
+#define HOST_LESS_TX_ID 42
+#define VOICE_CALL_PCM_DEVICE 8
+#define VOICE2_CALL_PCM_DEVICE -1
+#define VOLTE_CALL_PCM_DEVICE -1
+#define QCHAT_CALL_PCM_DEVICE -1
+#define VOWLAN_CALL_PCM_DEVICE -1
 #else
 #define VOICE_CALL_PCM_DEVICE 2
 #define VOICE2_CALL_PCM_DEVICE 22
diff --git a/hal/voice.c b/hal/voice.c
index 729ab27..b136f77 100644
--- a/hal/voice.c
+++ b/hal/voice.c
@@ -48,6 +48,10 @@
     .format = PCM_FORMAT_S16_LE,
 };
 
+#ifdef PLATFORM_AUTO
+struct pcm *voice_loopback_tx = NULL;
+struct pcm *voice_loopback_rx = NULL;
+#endif
 static struct voice_session *voice_get_session_from_use_case(struct audio_device *adev,
                               audio_usecase_t usecase_id)
 {
@@ -182,6 +186,16 @@
         session->pcm_tx = NULL;
     }
 
+#ifdef PLATFORM_AUTO
+    if(voice_loopback_rx) {
+        pcm_close(voice_loopback_rx);
+        voice_loopback_rx = NULL;
+    }
+    if(voice_loopback_tx) {
+        pcm_close(voice_loopback_tx);
+        voice_loopback_tx = NULL;
+    }
+#endif
     /* 2. Get and set stream specific mixer controls */
     disable_audio_route(adev, uc_info);
 
@@ -201,6 +215,9 @@
     int ret = 0;
     struct audio_usecase *uc_info;
     int pcm_dev_rx_id, pcm_dev_tx_id;
+#ifdef PLATFORM_AUTO
+    int pcm_dev_loopback_rx_id, pcm_dev_loopback_tx_id;
+#endif
     uint32_t sample_rate = 8000;
     struct voice_session *session = NULL;
     struct pcm_config voice_config = pcm_config_voice_call;
@@ -246,6 +263,10 @@
 
     select_devices(adev, usecase_id);
 
+#ifdef PLATFORM_AUTO
+    pcm_dev_loopback_rx_id = HOST_LESS_RX_ID;
+    pcm_dev_loopback_tx_id = HOST_LESS_TX_ID;
+#endif
     pcm_dev_rx_id = platform_get_pcm_device_id(uc_info->id, PCM_PLAYBACK);
     pcm_dev_tx_id = platform_get_pcm_device_id(uc_info->id, PCM_CAPTURE);
 
@@ -287,6 +308,28 @@
         goto error_start_voice;
     }
 
+#ifdef PLATFORM_AUTO
+    voice_loopback_rx = pcm_open(adev->snd_card,
+                                 pcm_dev_loopback_rx_id,
+                                 PCM_OUT, &voice_config);
+    if (voice_loopback_rx < 0 || !pcm_is_ready(voice_loopback_rx)) {
+        ALOGE("%s: Either could not open pcm_dev_loopback_rx_id %d or %s",
+              __func__, pcm_dev_loopback_rx_id, pcm_get_error(voice_loopback_rx));
+        ret = -EIO;
+        goto error_start_voice;
+    }
+
+    voice_loopback_tx = pcm_open(adev->snd_card,
+                                 pcm_dev_loopback_tx_id,
+                                 PCM_IN, &voice_config);
+    if (voice_loopback_tx < 0 || !pcm_is_ready(voice_loopback_tx)) {
+         ALOGE("%s: Either could not open pcm_dev_loopback_tx_id or %s",
+               __func__, pcm_dev_loopback_tx_id, pcm_get_error(voice_loopback_tx));
+         ret = -EIO;
+         goto error_start_voice;
+    }
+#endif
+
     if(adev->mic_break_enabled)
         platform_set_mic_break_det(adev->platform, true);
 
@@ -302,6 +345,20 @@
         goto error_start_voice;
     }
 
+#ifdef PLATFORM_AUTO
+    ret = pcm_start(voice_loopback_tx);
+    if (ret != 0) {
+        ALOGE("%s: %s", __func__, pcm_get_error(voice_loopback_tx));
+        goto error_start_voice;
+    }
+
+    ret = pcm_start(voice_loopback_rx);
+    if (ret != 0) {
+        ALOGE("%s: %s", __func__, pcm_get_error(voice_loopback_rx));
+        goto error_start_voice;
+    }
+#endif
+
     /* Enable aanc only when no calls are active */
     if (!voice_is_call_state_active(adev))
         voice_check_and_update_aanc_path(adev, uc_info->out_snd_device, true);