diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index e6dfb66..fb668d5 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -1089,10 +1089,19 @@
     struct audio_usecase *usecase;
     bool switch_device[AUDIO_USECASE_MAX];
     int i, num_uc_to_switch = 0;
+    int backend_check_cond = AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND;
 
     bool force_routing = platform_check_and_set_capture_codec_backend_cfg(adev, uc_info,
                          snd_device);
     ALOGD("%s:becf: force routing %d", __func__, force_routing);
+
+    /*
+     * Make sure out devices is checked against out codec backend device and
+     * also in devices against in codec backend. Checking out device against in
+     * codec backend or vice versa causes issues.
+     */
+    if (uc_info->type == PCM_CAPTURE)
+        backend_check_cond = AUDIO_DEVICE_IN_ALL_CODEC_BACKEND;
     /*
      * This function is to make sure that all the active capture usecases
      * are always routed to the same input sound device.
@@ -1108,10 +1117,13 @@
 
     list_for_each(node, &adev->usecase_list) {
         usecase = node_to_item(node, struct audio_usecase, list);
+        /*
+         * TODO: Enhance below condition to handle BT sco/USB multi recording
+         */
         if (usecase->type != PCM_PLAYBACK &&
                 usecase != uc_info &&
                 (usecase->in_snd_device != snd_device || force_routing) &&
-                ((uc_info->devices & AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND) &&
+                ((uc_info->devices & backend_check_cond) &&
                  (((usecase->devices & ~AUDIO_DEVICE_BIT_IN) & AUDIO_DEVICE_IN_ALL_CODEC_BACKEND) ||
                   (usecase->type == VOICE_CALL) || (usecase->type == VOIP_CALL))) &&
                 (usecase->id != USECASE_AUDIO_SPKR_CALIB_TX)) {
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index a6de6e9..c2bcbe0 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -2607,6 +2607,8 @@
         if (backend_tag_table[snd_device] != NULL) {
                 if (strcmp(backend_tag_table[snd_device], "usb-headset-mic") == 0)
                         port = USB_AUDIO_TX_BACKEND;
+                else if (strstr(backend_tag_table[snd_device], "bt-sco") != NULL)
+                        port = BT_SCO_TX_BACKEND;
         }
     } else {
         ALOGW("%s:napb: Invalid device - %d ", __func__, snd_device);
@@ -3324,6 +3326,10 @@
 {
     struct platform_data *my_data = (struct platform_data *)platform;
     struct audio_device *adev = my_data->adev;
+    /*
+     * TODO: active_input always points to last opened input. Source returned will
+     * be wrong if more than one active inputs are present.
+     */
     audio_source_t  source = (adev->active_input == NULL) ?
                                 AUDIO_SOURCE_DEFAULT : adev->active_input->source;
 
@@ -4377,8 +4383,8 @@
           __func__, bit_width, sample_rate, channels,backend_idx,
           platform_get_snd_device_name(snd_device));
 
-    if (bit_width !=
-        my_data->current_backend_cfg[backend_idx].bit_width) {
+    if ((my_data->current_backend_cfg[backend_idx].bitwidth_mixer_ctl) &&
+        (bit_width != my_data->current_backend_cfg[backend_idx].bit_width)) {
 
         struct  mixer_ctl *ctl = NULL;
         ctl = mixer_get_ctl_by_name(adev->mixer,
@@ -4416,7 +4422,8 @@
      */
     // TODO: This has to be more dynamic based on policy file
 
-    if ((sample_rate != my_data->current_backend_cfg[(int)backend_idx].sample_rate) &&
+    if ((my_data->current_backend_cfg[backend_idx].samplerate_mixer_ctl) &&
+        (sample_rate != my_data->current_backend_cfg[(int)backend_idx].sample_rate) &&
             (my_data->hifi_audio)) {
             /*
              * sample rate update is needed only for hifi audio enabled platforms
diff --git a/hal/msm8916/platform.h b/hal/msm8916/platform.h
index a0ae7d0..24c793e 100644
--- a/hal/msm8916/platform.h
+++ b/hal/msm8916/platform.h
@@ -240,6 +240,7 @@
     SLIMBUS_0_TX,
     DEFAULT_CODEC_TX_BACKEND = SLIMBUS_0_TX,
     USB_AUDIO_TX_BACKEND,
+    BT_SCO_TX_BACKEND,
     MAX_CODEC_BACKENDS
 };
 
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 7bfc5de..81741fc 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -2370,6 +2370,8 @@
         if (backend_tag_table[snd_device] != NULL) {
                 if (strcmp(backend_tag_table[snd_device], "usb-headset-mic") == 0)
                         port = USB_AUDIO_TX_BACKEND;
+                else if (strstr(backend_tag_table[snd_device], "bt-sco") != NULL)
+                        port = BT_SCO_TX_BACKEND;
         }
     } else {
         ALOGW("%s:napb: Invalid device - %d ", __func__, snd_device);
@@ -3025,6 +3027,10 @@
 {
     struct platform_data *my_data = (struct platform_data *)platform;
     struct audio_device *adev = my_data->adev;
+    /*
+     * TODO: active_input always points to last opened input. Source returned will
+     * be wrong if more than one active inputs are present.
+     */
     audio_source_t  source = (adev->active_input == NULL) ?
                                 AUDIO_SOURCE_DEFAULT : adev->active_input->source;
 
@@ -4357,8 +4363,8 @@
           sample_rate, channels, backend_idx,
           platform_get_snd_device_name(snd_device));
 
-    if (bit_width !=
-        my_data->current_backend_cfg[backend_idx].bit_width) {
+    if ((my_data->current_backend_cfg[backend_idx].bitwidth_mixer_ctl) &&
+        (bit_width != my_data->current_backend_cfg[backend_idx].bit_width)) {
 
         struct  mixer_ctl *ctl = NULL;
         ctl = mixer_get_ctl_by_name(adev->mixer,
@@ -4392,8 +4398,8 @@
         ret = 0;
     }
 
-    if (sample_rate !=
-       my_data->current_backend_cfg[backend_idx].sample_rate) {
+    if ((my_data->current_backend_cfg[backend_idx].samplerate_mixer_ctl) &&
+        (sample_rate != my_data->current_backend_cfg[backend_idx].sample_rate)) {
             char *rate_str = NULL;
             struct  mixer_ctl *ctl = NULL;
 
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 6f55c2c..eb34293 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -231,6 +231,7 @@
     SLIMBUS_0_TX,
     DEFAULT_CODEC_TX_BACKEND = SLIMBUS_0_TX,
     USB_AUDIO_TX_BACKEND,
+    BT_SCO_TX_BACKEND,
     MAX_CODEC_BACKENDS
 };