diff --git a/hal/Android.mk b/hal/Android.mk
index 923879c..58a79fb 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -10,7 +10,7 @@
 ifneq ($(filter msm8960,$(TARGET_BOARD_PLATFORM)),)
   LOCAL_CFLAGS += -DMAX_TARGET_SPECIFIC_CHANNEL_CNT="2"
 endif
-ifneq ($(filter msm8974 msm8226 msm8084 msm8992 msm8994 msm8996 msm8998,$(TARGET_BOARD_PLATFORM)),)
+ifneq ($(filter msm8974 msm8226 msm8084 msm8992 msm8994 msm8996 msm8998 sdm845,$(TARGET_BOARD_PLATFORM)),)
   # B-family platform uses msm8974 code base
   AUDIO_PLATFORM = msm8974
 ifneq ($(filter msm8974,$(TARGET_BOARD_PLATFORM)),)
@@ -47,6 +47,12 @@
   LOCAL_CFLAGS += -DKPI_OPTIMIZE_ENABLED
   MULTIPLE_HW_VARIANTS_ENABLED := true
 endif
+ifneq ($(filter sdm845,$(TARGET_BOARD_PLATFORM)),)
+  LOCAL_CFLAGS := -DPLATFORM_SDM845
+  LOCAL_CFLAGS += -DMAX_TARGET_SPECIFIC_CHANNEL_CNT="4"
+  LOCAL_CFLAGS += -DKPI_OPTIMIZE_ENABLED
+  MULTIPLE_HW_VARIANTS_ENABLED := true
+endif
 endif
 
 ifneq ($(filter msm8916 msm8909 msm8952,$(TARGET_BOARD_PLATFORM)),)
@@ -149,7 +155,7 @@
     LOCAL_SRC_FILES += audio_extn/dsm_feedback.c
 endif
 
-ifneq ($(filter msm8992 msm8994 msm8996 msm8998,$(TARGET_BOARD_PLATFORM)),)
+ifneq ($(filter msm8992 msm8994 msm8996 msm8998 sdm845,$(TARGET_BOARD_PLATFORM)),)
   # push codec/mad calibration to HW dep node
   # applicable to msm8992/8994 or newer platforms
   LOCAL_CFLAGS += -DHWDEP_CAL_ENABLED
diff --git a/hal/audio_extn/audio_extn.h b/hal/audio_extn/audio_extn.h
index c7d6768..2ca76fa 100644
--- a/hal/audio_extn/audio_extn.h
+++ b/hal/audio_extn/audio_extn.h
@@ -81,7 +81,7 @@
 #define audio_extn_usb_is_capture_supported()                          (false)
 #define audio_extn_usb_get_max_channels(dir)                           (0)
 #define audio_extn_usb_get_max_bit_width(dir)                          (0)
-#define audio_extn_usb_sup_sample_rates(t, s, l)                       (0)
+#define audio_extn_usb_sup_sample_rates(t, s, l)        ((t), (s), (l), 0) /* fix unused warn */
 #define audio_extn_usb_alive(adev)                                     (false)
 #else
 void audio_extn_usb_init(void *adev);
diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index f8d6725..a714b4e 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -996,9 +996,9 @@
     return ret;
 }
 
-static ssize_t read_usb_sup_sample_rates(bool is_playback __unused,
-                                         uint32_t *supported_sample_rates __unused,
-                                         uint32_t max_rates __unused)
+static ssize_t read_usb_sup_sample_rates(bool is_playback,
+                                         uint32_t *supported_sample_rates,
+                                         uint32_t max_rates)
 {
     ssize_t count = audio_extn_usb_sup_sample_rates(is_playback,
                                                     supported_sample_rates,
@@ -3982,6 +3982,7 @@
     out->error_log = NULL;
 
     pthread_cond_destroy(&out->cond);
+    pthread_mutex_destroy(&out->pre_lock);
     pthread_mutex_destroy(&out->lock);
     free(stream);
     ALOGV("%s: exit", __func__);
@@ -4527,6 +4528,9 @@
     error_log_destroy(in->error_log);
     in->error_log = NULL;
 
+    pthread_mutex_destroy(&in->pre_lock);
+    pthread_mutex_destroy(&in->lock);
+
     free(stream);
 
     return;
@@ -4694,6 +4698,7 @@
         }
         if (adev->adm_deinit)
             adev->adm_deinit(adev->adm_data);
+        pthread_mutex_destroy(&adev->lock);
         free(device);
     }
 
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index c113eca..adcb26f 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -485,6 +485,7 @@
     {TO_NAME_INDEX(USECASE_VOICEMMODE1_CALL)},
     {TO_NAME_INDEX(USECASE_VOICEMMODE2_CALL)},
     {TO_NAME_INDEX(USECASE_AUDIO_HFP_SCO)},
+    {TO_NAME_INDEX(USECASE_AUDIO_HFP_SCO_WB)},
     {TO_NAME_INDEX(USECASE_AUDIO_SPKR_CALIB_TX)},
 };
 
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 3b1d4d5..01de9b3 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -30,7 +30,7 @@
 #include "platform.h"
 #include "audio_extn.h"
 #include <linux/msm_audio.h>
-#if defined (PLATFORM_MSM8996) || (PLATFORM_MSM8998)
+#if defined (PLATFORM_MSM8996) || (PLATFORM_MSM8998) || (PLATFORM_SDM845)
 #include <sound/devdep_params.h>
 #endif
 
@@ -120,7 +120,7 @@
     bool speaker_lr_swap;
 
     void *acdb_handle;
-#if defined (PLATFORM_MSM8994) || (PLATFORM_MSM8996) || (PLATFORM_MSM8998)
+#if defined (PLATFORM_MSM8994) || (PLATFORM_MSM8996) || (PLATFORM_MSM8998) || (PLATFORM_SDM845)
     acdb_init_v2_cvd_t acdb_init;
 #elif defined (PLATFORM_MSM8084)
     acdb_init_v2_t acdb_init;
@@ -720,7 +720,7 @@
 
 inline bool platform_supports_app_type_cfg()
 {
-#ifdef PLATFORM_MSM8998
+#if defined (PLATFORM_MSM8998) || (PLATFORM_SDM845)
     return true;
 #else
     return false;
@@ -1141,7 +1141,7 @@
         return 0;
     }
 
-#if defined (PLATFORM_MSM8994) || (PLATFORM_MSM8996) || (PLATFORM_MSM8998)
+#if defined (PLATFORM_MSM8994) || (PLATFORM_MSM8996) || (PLATFORM_MSM8998) || (PLATFORM_SDM845)
     char *cvd_version = calloc(1, MAX_CVD_VERSION_STRING_SIZE);
     if (!cvd_version)
         ALOGE("failed to allocate cvd_version");
@@ -1467,7 +1467,7 @@
             ALOGV("%s: Could not find the symbol acdb_loader_send_gain_dep_cal from %s",
                   __func__, LIB_ACDB_LOADER);
 
-#if defined (PLATFORM_MSM8994) || (PLATFORM_MSM8996) || (PLATFORM_MSM8998)
+#if defined (PLATFORM_MSM8994) || (PLATFORM_MSM8996) || (PLATFORM_MSM8998) || (PLATFORM_SDM845)
         acdb_init_v2_cvd_t acdb_init_local;
         acdb_init_local = (acdb_init_v2_cvd_t)dlsym(my_data->acdb_handle,
                                               "acdb_loader_init_v2");
@@ -4107,7 +4107,7 @@
 int platform_get_mmap_data_fd(void *platform __unused, int fe_dev __unused, int dir __unused,
                               int *fd __unused, uint32_t *size __unused)
 {
-#if defined (PLATFORM_MSM8996) || (PLATFORM_MSM8998)
+#if defined (PLATFORM_MSM8996) || (PLATFORM_MSM8998) || (PLATFORM_SDM845)
     struct platform_data *my_data = (struct platform_data *)platform;
     struct audio_device *adev = my_data->adev;
     int hw_fd = -1;