diff --git a/hal/acdb.c b/hal/acdb.c
new file mode 100644
index 0000000..cbb96bd
--- /dev/null
+++ b/hal/acdb.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (c) 2013-2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution.
+ *
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "audio_hw_acdb"
+//#define LOG_NDEBUG 0
+#define LOG_NDDEBUG 0
+
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <cutils/log.h>
+#include <cutils/list.h>
+#include "acdb.h"
+#include "platform_api.h"
+
+int acdb_init(int snd_card_num)
+{
+
+    int result = -1;
+    char *cvd_version = NULL;
+
+    char *snd_card_name = NULL;
+    struct mixer *mixer = NULL;
+    struct acdb_platform_data *my_data = NULL;
+
+    if(snd_card_num < 0) {
+        ALOGE("invalid sound card number");
+        return result;
+    }
+
+    mixer = mixer_open(snd_card_num);
+    if (!mixer) {
+        ALOGE("%s: Unable to open the mixer card: %d", __func__,
+               snd_card_num);
+        goto cleanup;
+    }
+
+    my_data = calloc(1, sizeof(struct acdb_platform_data));
+    if (!my_data) {
+        ALOGE("failed to allocate acdb platform data");
+        goto cleanup;
+    }
+
+    list_init(&my_data->acdb_meta_key_list);
+
+    /* Extract META KEY LIST INFO */
+    platform_info_init(PLATFORM_INFO_XML_PATH, my_data, ACDB_EXTN);
+
+    my_data->acdb_handle = dlopen(LIB_ACDB_LOADER, RTLD_NOW);
+    if (my_data->acdb_handle == NULL) {
+        ALOGE("%s: DLOPEN failed for %s", __func__, LIB_ACDB_LOADER);
+        goto cleanup;
+    }
+
+    ALOGV("%s: DLOPEN successful for %s", __func__, LIB_ACDB_LOADER);
+
+    my_data->acdb_init_v3 = (acdb_init_v3_t)dlsym(my_data->acdb_handle,
+                                                     "acdb_loader_init_v3");
+    if (my_data->acdb_init_v3 == NULL)
+        ALOGE("%s: dlsym error %s for acdb_loader_init_v3", __func__, dlerror());
+
+    my_data->acdb_init_v2 = (acdb_init_v2_t)dlsym(my_data->acdb_handle,
+                                                     "acdb_loader_init_v2");
+    if (my_data->acdb_init_v2 == NULL)
+        ALOGE("%s: dlsym error %s for acdb_loader_init_v2", __func__, dlerror());
+
+    my_data->acdb_init = (acdb_init_t)dlsym(my_data->acdb_handle,
+                                                 "acdb_loader_init_ACDB");
+    if (my_data->acdb_init == NULL && my_data->acdb_init_v2 == NULL
+                                                 && my_data->acdb_init_v3 == NULL) {
+        ALOGE("%s: dlsym error %s for acdb_loader_init_ACDB", __func__, dlerror());
+        goto cleanup;
+    }
+
+    /* Get CVD version */
+    cvd_version = calloc(1, MAX_CVD_VERSION_STRING_SIZE);
+    if (!cvd_version) {
+        ALOGE("%s: Failed to allocate cvd version", __func__);
+        goto cleanup;
+    } else {
+        struct mixer_ctl *ctl = NULL;
+        int count = 0;
+
+        ctl = mixer_get_ctl_by_name(mixer, CVD_VERSION_MIXER_CTL);
+        if (!ctl) {
+            ALOGE("%s: Could not get ctl for mixer cmd - %s",  __func__, CVD_VERSION_MIXER_CTL);
+            goto cleanup;
+        }
+        mixer_ctl_update(ctl);
+
+        count = mixer_ctl_get_num_values(ctl);
+        if (count > MAX_CVD_VERSION_STRING_SIZE)
+            count = MAX_CVD_VERSION_STRING_SIZE;
+
+        result = mixer_ctl_get_array(ctl, cvd_version, count);
+        if (result != 0) {
+            ALOGE("%s: ERROR! mixer_ctl_get_array() failed to get CVD Version", __func__);
+            goto cleanup;
+        }
+    }
+
+    /* Get Sound card name */
+    snd_card_name = strdup(mixer_get_name(mixer));
+    if (!snd_card_name) {
+        ALOGE("failed to allocate memory for snd_card_name");
+        result = -1;
+        goto cleanup;
+    }
+
+    int key = 0;
+    struct listnode *node = NULL;
+    struct meta_key_list *key_info = NULL;
+
+    if (my_data->acdb_init_v3) {
+        result = my_data->acdb_init_v3(snd_card_name, cvd_version,
+                                       &my_data->acdb_meta_key_list);
+    } else if (my_data->acdb_init_v2) {
+        node = list_head(&my_data->acdb_meta_key_list);
+        key_info = node_to_item(node, struct meta_key_list, list);
+        key = key_info->cal_info.nKey;
+        result = my_data->acdb_init_v2(snd_card_name, cvd_version, key);
+    } else {
+        result = my_data->acdb_init();
+    }
+
+cleanup:
+    if (NULL != my_data) {
+        if (my_data->acdb_handle)
+            dlclose(my_data->acdb_handle);
+
+        struct listnode *node;
+        struct meta_key_list *key_info;
+        list_for_each(node, &my_data->acdb_meta_key_list) {
+            key_info = node_to_item(node, struct meta_key_list, list);
+            free(key_info);
+        }
+        free(my_data);
+    }
+
+    if (mixer)
+        mixer_close(mixer);
+
+    if (cvd_version)
+        free(cvd_version);
+
+    if (snd_card_name)
+        free(snd_card_name);
+
+    return result;
+}
+
+int acdb_set_metainfo_key(void *platform, char *name, int key) {
+
+    struct meta_key_list *key_info = (struct meta_key_list *)
+                                        calloc(1, sizeof(struct meta_key_list));
+    struct acdb_platform_data *pdata = (struct acdb_platform_data *)platform;
+    if (!key_info) {
+        ALOGE("%s: Could not allocate memory for key %d", __func__, key);
+        return -ENOMEM;
+    }
+
+    key_info->cal_info.nKey = key;
+    strlcpy(key_info->name, name, sizeof(key_info->name));
+    list_add_tail(&pdata->acdb_meta_key_list, &key_info->list);
+
+    ALOGD("%s: successfully added module %s and key %d to the list", __func__,
+               key_info->name, key_info->cal_info.nKey);
+
+    return 0;
+}