/*
 * Copyright (c) 2013-2015, 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 "msm8974_platform"
//#define LOG_NDEBUG 0
//#define LOG_NDDEBUG 0

#include <stdlib.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <cutils/log.h>
#include <sys/ioctl.h>
#include <cutils/properties.h>
#include <cutils/str_parms.h>
#include <audio_hw.h>
#include <platform_api.h>
#include "platform.h"
#include "audio_extn.h"
#include "voice_extn.h"
#include "sound/compress_params.h"
#ifdef HWDEP_CAL_ENABLED
#include "sound/msmcal-hwdep.h"
#endif

#define SOUND_TRIGGER_DEVICE_HANDSET_MONO_LOW_POWER_ACDB_ID (100)

#define MIXER_XML_PATH "/system/etc/mixer_paths.xml"
#define MIXER_XML_PATH_AUXPCM "/system/etc/mixer_paths_auxpcm.xml"
#define MIXER_XML_PATH_WCD9330 "/system/etc/mixer_paths_wcd9330.xml"
#define LIB_ACDB_LOADER "libacdbloader.so"
#define AUDIO_DATA_BLOCK_MIXER_CTL "HDMI EDID"

#define MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE (256 * 1024)
#define MIN_COMPRESS_OFFLOAD_FRAGMENT_SIZE (2 * 1024)
#define COMPRESS_OFFLOAD_FRAGMENT_SIZE_FOR_AV_STREAMING (2 * 1024)
#define COMPRESS_OFFLOAD_FRAGMENT_SIZE (32 * 1024)

/* Used in calculating fragment size for pcm offload */
#define PCM_OFFLOAD_BUFFER_DURATION 40 /* 40 millisecs */

/* MAX PCM fragment size cannot be increased  further due
 * to flinger's cblk size of 1mb,and it has to be a multiple of
 * 24 - lcm of channels supported by DSP
 */
#define MAX_PCM_OFFLOAD_FRAGMENT_SIZE (240 * 1024)
#define MIN_PCM_OFFLOAD_FRAGMENT_SIZE (4 * 1024)

#define DIV_ROUND_UP(x, y) (((x) + (y) - 1)/(y))
#define ALIGN(x, y) ((y) * DIV_ROUND_UP((x), (y)))

/*
 * This file will have a maximum of 38 bytes:
 *
 * 4 bytes: number of audio blocks
 * 4 bytes: total length of Short Audio Descriptor (SAD) blocks
 * Maximum 10 * 3 bytes: SAD blocks
 */
#define MAX_SAD_BLOCKS      10
#define SAD_BLOCK_SIZE      3

/* EDID format ID for LPCM audio */
#define EDID_FORMAT_LPCM    1

/* Retry for delay in FW loading*/
#define RETRY_NUMBER 10
#define RETRY_US 500000
#define MAX_SND_CARD 8

#define SAMPLE_RATE_8KHZ  8000
#define SAMPLE_RATE_16KHZ 16000

#define AUDIO_PARAMETER_KEY_FLUENCE_TYPE  "fluence"
#define AUDIO_PARAMETER_KEY_BTSCO         "bt_samplerate"
#define AUDIO_PARAMETER_KEY_SLOWTALK      "st_enable"
#define AUDIO_PARAMETER_KEY_VOLUME_BOOST  "volume_boost"
#define MAX_CAL_NAME 20

#ifdef HWDEP_CAL_ENABLED
char cal_name_info[WCD9XXX_MAX_CAL][MAX_CAL_NAME] = {
        [WCD9XXX_ANC_CAL] = "anc_cal",
        [WCD9XXX_MBHC_CAL] = "mbhc_cal",
        [WCD9XXX_MAD_CAL] = "mad_cal",
};
#endif

enum {
	VOICE_FEATURE_SET_DEFAULT,
	VOICE_FEATURE_SET_VOLUME_BOOST
};

struct audio_block_header
{
    int reserved;
    int length;
};

/* Audio calibration related functions */
typedef void (*acdb_deallocate_t)();
typedef int  (*acdb_init_t)();
#ifdef HUAWEI_SOUND_PARAM_PATH
typedef void (*acdb_set_param_path_t)(char *path);
#endif
typedef void (*acdb_send_audio_cal_t)(int, int);
typedef void (*acdb_send_voice_cal_t)(int, int);
typedef int (*acdb_reload_vocvoltable_t)(int);
typedef int (*acdb_loader_get_calibration_t)(char *attr, int size, void *data);
acdb_loader_get_calibration_t acdb_loader_get_calibration;

struct platform_data {
    struct audio_device *adev;
    bool fluence_in_spkr_mode;
    bool fluence_in_voice_call;
    bool fluence_in_voice_rec;
    bool fluence_in_audio_rec;
    int  fluence_type;
    char fluence_cap[PROPERTY_VALUE_MAX];
    int  btsco_sample_rate;
    bool slowtalk;
#ifdef PLATFORM_APQ8084
    bool is_i2s_ext_modem;
#endif
    /* Audio calibration related functions */
    void                       *acdb_handle;
    int                        voice_feature_set;
    acdb_init_t                acdb_init;
#ifdef HUAWEI_SOUND_PARAM_PATH
    acdb_set_param_path_t      acdb_set_param_path;
#endif
    acdb_deallocate_t          acdb_deallocate;
    acdb_send_audio_cal_t      acdb_send_audio_cal;
    acdb_send_voice_cal_t      acdb_send_voice_cal;
    acdb_reload_vocvoltable_t  acdb_reload_vocvoltable;

    void *hw_info;
    struct csd_data *csd;
};

static int pcm_device_table[AUDIO_USECASE_MAX][2] = {
    [USECASE_AUDIO_PLAYBACK_DEEP_BUFFER] = {DEEP_BUFFER_PCM_DEVICE,
                                            DEEP_BUFFER_PCM_DEVICE},
    [USECASE_AUDIO_PLAYBACK_LOW_LATENCY] = {LOWLATENCY_PCM_DEVICE,
                                           LOWLATENCY_PCM_DEVICE},
    [USECASE_AUDIO_PLAYBACK_MULTI_CH] = {MULTIMEDIA2_PCM_DEVICE,
                                        MULTIMEDIA2_PCM_DEVICE},
    [USECASE_AUDIO_PLAYBACK_OFFLOAD] =
                     {PLAYBACK_OFFLOAD_DEVICE, PLAYBACK_OFFLOAD_DEVICE},
    [USECASE_AUDIO_PLAYBACK_ULL] = {MULTIMEDIA3_PCM_DEVICE,
                                    MULTIMEDIA3_PCM_DEVICE},
#ifdef MULTIPLE_OFFLOAD_ENABLED
    [USECASE_AUDIO_PLAYBACK_OFFLOAD2] =
                     {PLAYBACK_OFFLOAD_DEVICE2, PLAYBACK_OFFLOAD_DEVICE2},
    [USECASE_AUDIO_PLAYBACK_OFFLOAD3] =
                     {PLAYBACK_OFFLOAD_DEVICE3, PLAYBACK_OFFLOAD_DEVICE3},
#ifndef PLATFORM_MSM8974
    [USECASE_AUDIO_PLAYBACK_OFFLOAD4] =
                     {PLAYBACK_OFFLOAD_DEVICE4, PLAYBACK_OFFLOAD_DEVICE4},
    [USECASE_AUDIO_PLAYBACK_OFFLOAD5] =
                     {PLAYBACK_OFFLOAD_DEVICE5, PLAYBACK_OFFLOAD_DEVICE5},
    [USECASE_AUDIO_PLAYBACK_OFFLOAD6] =
                     {PLAYBACK_OFFLOAD_DEVICE6, PLAYBACK_OFFLOAD_DEVICE6},
    [USECASE_AUDIO_PLAYBACK_OFFLOAD7] =
                     {PLAYBACK_OFFLOAD_DEVICE7, PLAYBACK_OFFLOAD_DEVICE7},
#endif
    [USECASE_AUDIO_PLAYBACK_OFFLOAD8] =
                     {PLAYBACK_OFFLOAD_DEVICE8, PLAYBACK_OFFLOAD_DEVICE8},
#ifndef PLATFORM_MSM8974
    [USECASE_AUDIO_PLAYBACK_OFFLOAD9] =
                     {PLAYBACK_OFFLOAD_DEVICE9, PLAYBACK_OFFLOAD_DEVICE9},
#endif
#endif
    [USECASE_AUDIO_DIRECT_PCM_OFFLOAD] =
                     {PLAYBACK_OFFLOAD_DEVICE2, PLAYBACK_OFFLOAD_DEVICE2},
    [USECASE_AUDIO_RECORD] = {AUDIO_RECORD_PCM_DEVICE, AUDIO_RECORD_PCM_DEVICE},
    [USECASE_AUDIO_RECORD_COMPRESS] = {COMPRESS_CAPTURE_DEVICE, COMPRESS_CAPTURE_DEVICE},
    [USECASE_AUDIO_RECORD_LOW_LATENCY] = {LOWLATENCY_PCM_DEVICE,
                                          LOWLATENCY_PCM_DEVICE},
    [USECASE_AUDIO_RECORD_FM_VIRTUAL] = {MULTIMEDIA2_PCM_DEVICE,
                                  MULTIMEDIA2_PCM_DEVICE},
    [USECASE_AUDIO_PLAYBACK_FM] = {FM_PLAYBACK_PCM_DEVICE, FM_CAPTURE_PCM_DEVICE},
    [USECASE_AUDIO_HFP_SCO] = {HFP_PCM_RX, HFP_SCO_RX},
    [USECASE_AUDIO_HFP_SCO_WB] = {HFP_PCM_RX, HFP_SCO_RX},
    [USECASE_VOICE_CALL] = {VOICE_CALL_PCM_DEVICE, VOICE_CALL_PCM_DEVICE},
    [USECASE_VOICE2_CALL] = {VOICE2_CALL_PCM_DEVICE, VOICE2_CALL_PCM_DEVICE},
    [USECASE_VOLTE_CALL] = {VOLTE_CALL_PCM_DEVICE, VOLTE_CALL_PCM_DEVICE},
    [USECASE_QCHAT_CALL] = {QCHAT_CALL_PCM_DEVICE, QCHAT_CALL_PCM_DEVICE},
    [USECASE_VOWLAN_CALL] = {VOWLAN_CALL_PCM_DEVICE, VOWLAN_CALL_PCM_DEVICE},
    [USECASE_COMPRESS_VOIP_CALL] = {COMPRESS_VOIP_CALL_PCM_DEVICE, COMPRESS_VOIP_CALL_PCM_DEVICE},
    [USECASE_INCALL_REC_UPLINK] = {AUDIO_RECORD_PCM_DEVICE,
                                   AUDIO_RECORD_PCM_DEVICE},
    [USECASE_INCALL_REC_DOWNLINK] = {AUDIO_RECORD_PCM_DEVICE,
                                     AUDIO_RECORD_PCM_DEVICE},
    [USECASE_INCALL_REC_UPLINK_AND_DOWNLINK] = {AUDIO_RECORD_PCM_DEVICE,
                                                AUDIO_RECORD_PCM_DEVICE},
    [USECASE_INCALL_REC_UPLINK_COMPRESS] = {COMPRESS_CAPTURE_DEVICE,
                                            COMPRESS_CAPTURE_DEVICE},
    [USECASE_INCALL_REC_DOWNLINK_COMPRESS] = {COMPRESS_CAPTURE_DEVICE,
                                              COMPRESS_CAPTURE_DEVICE},
    [USECASE_INCALL_REC_UPLINK_AND_DOWNLINK_COMPRESS] = {COMPRESS_CAPTURE_DEVICE,
                                                         COMPRESS_CAPTURE_DEVICE},
    [USECASE_INCALL_MUSIC_UPLINK] = {INCALL_MUSIC_UPLINK_PCM_DEVICE,
                                     INCALL_MUSIC_UPLINK_PCM_DEVICE},
    [USECASE_INCALL_MUSIC_UPLINK2] = {INCALL_MUSIC_UPLINK2_PCM_DEVICE,
                                      INCALL_MUSIC_UPLINK2_PCM_DEVICE},
    [USECASE_AUDIO_SPKR_CALIB_RX] = {SPKR_PROT_CALIB_RX_PCM_DEVICE, -1},
    [USECASE_AUDIO_SPKR_CALIB_TX] = {-1, SPKR_PROT_CALIB_TX_PCM_DEVICE},

    [USECASE_AUDIO_PLAYBACK_AFE_PROXY] = {AFE_PROXY_PLAYBACK_PCM_DEVICE,
                                          AFE_PROXY_RECORD_PCM_DEVICE},
    [USECASE_AUDIO_RECORD_AFE_PROXY] = {AFE_PROXY_PLAYBACK_PCM_DEVICE,
                                          AFE_PROXY_RECORD_PCM_DEVICE},
};

/* Array to store sound devices */
static char * device_table[SND_DEVICE_MAX] = {
    [SND_DEVICE_NONE] = "none",
    /* Playback sound devices */
    [SND_DEVICE_OUT_HANDSET] = "handset",
    [SND_DEVICE_OUT_SPEAKER] = "speaker",
    [SND_DEVICE_OUT_SPEAKER_REVERSE] = "speaker-reverse",
    [SND_DEVICE_OUT_HEADPHONES] = "headphones",
    [SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES] = "speaker-and-headphones",
    [SND_DEVICE_OUT_VOICE_HANDSET] = "voice-handset",
    [SND_DEVICE_OUT_VOICE_SPEAKER] = "voice-speaker",
    [SND_DEVICE_OUT_VOICE_HEADPHONES] = "voice-headphones",
    [SND_DEVICE_OUT_HDMI] = "hdmi",
    [SND_DEVICE_OUT_SPEAKER_AND_HDMI] = "speaker-and-hdmi",
    [SND_DEVICE_OUT_BT_SCO] = "bt-sco-headset",
    [SND_DEVICE_OUT_BT_SCO_WB] = "bt-sco-headset-wb",
    [SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES] = "voice-tty-full-headphones",
    [SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES] = "voice-tty-vco-headphones",
    [SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET] = "voice-tty-hco-handset",
    [SND_DEVICE_OUT_VOICE_TX] = "voice-tx",
    [SND_DEVICE_OUT_AFE_PROXY] = "afe-proxy",
    [SND_DEVICE_OUT_USB_HEADSET] = "usb-headphones",
    [SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET] = "speaker-and-usb-headphones",
    [SND_DEVICE_OUT_TRANSMISSION_FM] = "transmission-fm",
    [SND_DEVICE_OUT_ANC_HEADSET] = "anc-headphones",
    [SND_DEVICE_OUT_ANC_FB_HEADSET] = "anc-fb-headphones",
    [SND_DEVICE_OUT_VOICE_ANC_HEADSET] = "voice-anc-headphones",
    [SND_DEVICE_OUT_VOICE_ANC_FB_HEADSET] = "voice-anc-fb-headphones",
    [SND_DEVICE_OUT_SPEAKER_AND_ANC_HEADSET] = "speaker-and-anc-headphones",
    [SND_DEVICE_OUT_ANC_HANDSET] = "anc-handset",
    [SND_DEVICE_OUT_SPEAKER_PROTECTED] = "speaker-protected",
    [SND_DEVICE_OUT_VOIP_HANDSET] = "voip-handset-comm",
    [SND_DEVICE_OUT_VOIP_SPEAKER] = "voip-speaker-comm",
    [SND_DEVICE_OUT_VOIP_HEADPHONES] = "voip-headset-comm",

    /* Capture sound devices */
    [SND_DEVICE_IN_HANDSET_MIC] = "handset-mic",
    [SND_DEVICE_IN_HANDSET_MIC_AEC] = "handset-mic",
    [SND_DEVICE_IN_HANDSET_MIC_NS] = "handset-mic",
    [SND_DEVICE_IN_HANDSET_MIC_AEC_NS] = "handset-mic",
    [SND_DEVICE_IN_HANDSET_DMIC] = "dmic-endfire",
    [SND_DEVICE_IN_HANDSET_DMIC_AEC] = "dmic-endfire",
    [SND_DEVICE_IN_HANDSET_DMIC_NS] = "dmic-endfire",
    [SND_DEVICE_IN_HANDSET_DMIC_AEC_NS] = "dmic-endfire",
    [SND_DEVICE_IN_SPEAKER_MIC] = "speaker-mic",
    [SND_DEVICE_IN_SPEAKER_MIC_AEC] = "speaker-mic",
    [SND_DEVICE_IN_SPEAKER_MIC_NS] = "speaker-mic",
    [SND_DEVICE_IN_SPEAKER_MIC_AEC_NS] = "speaker-mic",
    [SND_DEVICE_IN_SPEAKER_DMIC] = "speaker-dmic-endfire",
    [SND_DEVICE_IN_SPEAKER_DMIC_AEC] = "speaker-dmic-endfire",
    [SND_DEVICE_IN_SPEAKER_DMIC_NS] = "speaker-dmic-endfire",
    [SND_DEVICE_IN_SPEAKER_DMIC_AEC_NS] = "speaker-dmic-endfire",
    [SND_DEVICE_IN_HEADSET_MIC] = "headset-mic",
    [SND_DEVICE_IN_HEADSET_MIC_FLUENCE] = "headset-mic",
    [SND_DEVICE_IN_VOICE_SPEAKER_MIC] = "voice-speaker-mic",
    [SND_DEVICE_IN_VOICE_HEADSET_MIC] = "voice-headset-mic",
    [SND_DEVICE_IN_HDMI_MIC] = "hdmi-mic",
    [SND_DEVICE_IN_BT_SCO_MIC] = "bt-sco-mic",
    [SND_DEVICE_IN_BT_SCO_MIC_WB] = "bt-sco-mic-wb",
    [SND_DEVICE_IN_CAMCORDER_MIC] = "camcorder-mic",
    [SND_DEVICE_IN_VOICE_DMIC] = "voice-dmic-ef",
    [SND_DEVICE_IN_VOICE_SPEAKER_DMIC] = "voice-speaker-dmic-ef",
    [SND_DEVICE_IN_VOICE_SPEAKER_QMIC] = "voice-speaker-qmic",
    [SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC] = "voice-tty-full-headset-mic",
    [SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC] = "voice-tty-vco-handset-mic",
    [SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC] = "voice-tty-hco-headset-mic",
    [SND_DEVICE_IN_VOICE_RX] = "voice-rx",
    [SND_DEVICE_IN_VOICE_REC_MIC] = "voice-rec-mic",
    [SND_DEVICE_IN_VOICE_REC_MIC_NS] = "voice-rec-mic",
    [SND_DEVICE_IN_VOICE_REC_DMIC_STEREO] = "voice-rec-dmic-ef",
    [SND_DEVICE_IN_VOICE_REC_DMIC_FLUENCE] = "voice-rec-dmic-ef-fluence",
    [SND_DEVICE_IN_USB_HEADSET_MIC] = "usb-headset-mic",
    [SND_DEVICE_IN_CAPTURE_FM] = "capture-fm",
    [SND_DEVICE_IN_AANC_HANDSET_MIC] = "aanc-handset-mic",
    [SND_DEVICE_IN_QUAD_MIC] = "quad-mic",
    [SND_DEVICE_IN_HANDSET_STEREO_DMIC] = "handset-stereo-dmic-ef",
    [SND_DEVICE_IN_SPEAKER_STEREO_DMIC] = "speaker-stereo-dmic-ef",
    [SND_DEVICE_IN_CAPTURE_VI_FEEDBACK] = "vi-feedback",
    [SND_DEVICE_IN_VOIP_HANDSET_MIC] = "voip-main-mic-comm",
    [SND_DEVICE_IN_VOIP_SPEAKER_MIC] = "voip-sub-mic-comm",
    [SND_DEVICE_IN_VOIP_HEADSET_MIC] = "voip-headset-mic-comm",
};

/* ACDB IDs (audio DSP path configuration IDs) for each sound device */
static int acdb_device_table[SND_DEVICE_MAX] = {
    [SND_DEVICE_NONE] = -1,
    [SND_DEVICE_OUT_HANDSET] = 7,
    [SND_DEVICE_OUT_SPEAKER] = 14,
    [SND_DEVICE_OUT_SPEAKER_REVERSE] = 14,
    [SND_DEVICE_OUT_HEADPHONES] = 10,
    [SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES] = 10,
    [SND_DEVICE_OUT_VOICE_HANDSET] = 7,
    [SND_DEVICE_OUT_VOICE_SPEAKER] = 14,
    [SND_DEVICE_OUT_VOICE_HEADPHONES] = 10,
    [SND_DEVICE_OUT_HDMI] = 18,
    [SND_DEVICE_OUT_SPEAKER_AND_HDMI] = 14,
    [SND_DEVICE_OUT_BT_SCO] = 22,
    [SND_DEVICE_OUT_BT_SCO_WB] = 39,
    [SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES] = 17,
    [SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES] = 17,
    [SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET] = 37,
    [SND_DEVICE_OUT_VOICE_TX] = 45,
    [SND_DEVICE_OUT_AFE_PROXY] = 0,
    [SND_DEVICE_OUT_USB_HEADSET] = 0,
    [SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET] = 14,
    [SND_DEVICE_OUT_TRANSMISSION_FM] = 0,
    [SND_DEVICE_OUT_ANC_HEADSET] = 26,
    [SND_DEVICE_OUT_ANC_FB_HEADSET] = 27,
    [SND_DEVICE_OUT_VOICE_ANC_HEADSET] = 26,
    [SND_DEVICE_OUT_VOICE_ANC_FB_HEADSET] = 27,
    [SND_DEVICE_OUT_SPEAKER_AND_ANC_HEADSET] = 26,
    [SND_DEVICE_OUT_ANC_HANDSET] = 103,
    [SND_DEVICE_OUT_SPEAKER_PROTECTED] = 101,

    [SND_DEVICE_IN_HANDSET_MIC] = 4,
    [SND_DEVICE_IN_HANDSET_MIC_AEC] = 106,
    [SND_DEVICE_IN_HANDSET_MIC_NS] = 107,
    [SND_DEVICE_IN_HANDSET_MIC_AEC_NS] = 108,
    [SND_DEVICE_IN_HANDSET_DMIC] = 41,
    [SND_DEVICE_IN_HANDSET_DMIC_AEC] = 109,
    [SND_DEVICE_IN_HANDSET_DMIC_NS] = 110,
    [SND_DEVICE_IN_HANDSET_DMIC_AEC_NS] = 111,
    [SND_DEVICE_IN_SPEAKER_MIC] = 11,
    [SND_DEVICE_IN_SPEAKER_MIC_AEC] = 112,
    [SND_DEVICE_IN_SPEAKER_MIC_NS] = 113,
    [SND_DEVICE_IN_SPEAKER_MIC_AEC_NS] = 114,
    [SND_DEVICE_IN_SPEAKER_DMIC] = 43,
    [SND_DEVICE_IN_SPEAKER_DMIC_AEC] = 115,
    [SND_DEVICE_IN_SPEAKER_DMIC_NS] = 116,
    [SND_DEVICE_IN_SPEAKER_DMIC_AEC_NS] = 117,
    [SND_DEVICE_IN_HEADSET_MIC] = 8,
    [SND_DEVICE_IN_HEADSET_MIC_FLUENCE] = 47,
    [SND_DEVICE_IN_VOICE_SPEAKER_MIC] = 11,
    [SND_DEVICE_IN_VOICE_HEADSET_MIC] = 8,
    [SND_DEVICE_IN_HDMI_MIC] = 4,
    [SND_DEVICE_IN_BT_SCO_MIC] = 21,
    [SND_DEVICE_IN_BT_SCO_MIC_WB] = 38,
    [SND_DEVICE_IN_CAMCORDER_MIC] = 4,
    [SND_DEVICE_IN_VOICE_DMIC] = 41,
    [SND_DEVICE_IN_VOICE_SPEAKER_DMIC] = 43,
    [SND_DEVICE_IN_VOICE_SPEAKER_QMIC] = 19,
    [SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC] = 16,
    [SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC] = 36,
    [SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC] = 16,
    [SND_DEVICE_IN_VOICE_RX] = 44,
    [SND_DEVICE_IN_VOICE_REC_MIC] = 4,
    [SND_DEVICE_IN_VOICE_REC_MIC_NS] = 107,
    [SND_DEVICE_IN_VOICE_REC_DMIC_STEREO] = 34,
    [SND_DEVICE_IN_VOICE_REC_DMIC_FLUENCE] = 41,
    [SND_DEVICE_IN_USB_HEADSET_MIC] = 44,
    [SND_DEVICE_IN_CAPTURE_FM] = 0,
    [SND_DEVICE_IN_AANC_HANDSET_MIC] = 104,
    [SND_DEVICE_IN_QUAD_MIC] = 46,
    [SND_DEVICE_IN_HANDSET_STEREO_DMIC] = 34,
    [SND_DEVICE_IN_SPEAKER_STEREO_DMIC] = 35,
    [SND_DEVICE_IN_CAPTURE_VI_FEEDBACK] = 102,
};

struct name_to_index {
    char name[100];
    unsigned int index;
};

#define TO_NAME_INDEX(X)   #X, X

/* Used to get index from parsed sting */
static struct name_to_index snd_device_name_index[SND_DEVICE_MAX] = {
    {TO_NAME_INDEX(SND_DEVICE_OUT_HANDSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_REVERSE)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_HEADPHONES)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_HANDSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_SPEAKER)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_HEADPHONES)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_HDMI)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_AND_HDMI)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_BT_SCO)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_BT_SCO_WB)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_TX)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_AFE_PROXY)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_USB_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_TRANSMISSION_FM)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_ANC_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_ANC_FB_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_ANC_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_ANC_FB_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_AND_ANC_HEADSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_ANC_HANDSET)},
    {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_PROTECTED)},
    {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_IN_HANDSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_MIC_AEC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_MIC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_MIC_AEC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_DMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_DMIC_AEC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_DMIC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_DMIC_AEC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_MIC_AEC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_MIC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_MIC_AEC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_DMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_DMIC_AEC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_DMIC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_DMIC_AEC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HEADSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HEADSET_MIC_FLUENCE)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_SPEAKER_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_HEADSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HDMI_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_BT_SCO_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_BT_SCO_MIC_WB)},
    {TO_NAME_INDEX(SND_DEVICE_IN_CAMCORDER_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_DMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_SPEAKER_DMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_SPEAKER_QMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_REC_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_REC_MIC_NS)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_REC_DMIC_STEREO)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_REC_DMIC_FLUENCE)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOICE_RX)},
    {TO_NAME_INDEX(SND_DEVICE_IN_USB_HEADSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_CAPTURE_FM)},
    {TO_NAME_INDEX(SND_DEVICE_IN_AANC_HANDSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_QUAD_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_HANDSET_STEREO_DMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_SPEAKER_STEREO_DMIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_CAPTURE_VI_FEEDBACK)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOIP_HANDSET_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOIP_SPEAKER_MIC)},
    {TO_NAME_INDEX(SND_DEVICE_IN_VOIP_HEADSET_MIC)},
};

static char * backend_table[SND_DEVICE_MAX] = {0};

static struct name_to_index usecase_name_index[AUDIO_USECASE_MAX] = {
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_DEEP_BUFFER)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_LOW_LATENCY)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_MULTI_CH)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_ULL)},
#ifdef MULTIPLE_OFFLOAD_ENABLED
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD2)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD3)},
#ifndef PLATFORM_MSM8974
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD4)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD5)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD6)},
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD7)},
#endif
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD8)},
#ifndef PLATFORM_MSM8974
    {TO_NAME_INDEX(USECASE_AUDIO_PLAYBACK_OFFLOAD9)},
#endif
#endif
    {TO_NAME_INDEX(USECASE_AUDIO_DIRECT_PCM_OFFLOAD)},
    {TO_NAME_INDEX(USECASE_AUDIO_RECORD)},
    {TO_NAME_INDEX(USECASE_AUDIO_RECORD_LOW_LATENCY)},
    {TO_NAME_INDEX(USECASE_VOICE_CALL)},
    {TO_NAME_INDEX(USECASE_VOICE2_CALL)},
    {TO_NAME_INDEX(USECASE_VOLTE_CALL)},
    {TO_NAME_INDEX(USECASE_QCHAT_CALL)},
    {TO_NAME_INDEX(USECASE_VOWLAN_CALL)},
    {TO_NAME_INDEX(USECASE_INCALL_REC_UPLINK)},
    {TO_NAME_INDEX(USECASE_INCALL_REC_DOWNLINK)},
    {TO_NAME_INDEX(USECASE_INCALL_REC_UPLINK_AND_DOWNLINK)},
    {TO_NAME_INDEX(USECASE_AUDIO_HFP_SCO)},
};

#define DEEP_BUFFER_PLATFORM_DELAY (29*1000LL)
#define LOW_LATENCY_PLATFORM_DELAY (13*1000LL)

#ifdef HWDEP_CAL_ENABLED
static int hw_util_open(int card_no)
{
    int fd = -1;
    char dev_name[256];

    snprintf(dev_name, sizeof(dev_name), "/dev/snd/hwC%uD%u",
                               card_no, WCD9XXX_CODEC_HWDEP_NODE);
    ALOGE("%s Opening device %s\n", __func__, dev_name);
    fd = open(dev_name, O_WRONLY);
    if (fd < 0) {
        ALOGE("%s: cannot open device '%s'\n", __func__, dev_name);
        return fd;
    }
    ALOGE("%s success", __func__);
    return fd;
}

struct param_data {
    int    use_case;
    int    acdb_id;
    int    get_size;
    int    buff_size;
    int    data_size;
    void   *buff;
};

static int send_codec_cal(acdb_loader_get_calibration_t acdb_loader_get_calibration, int fd)
{
    int ret = 0, type;

    for (type = WCD9XXX_ANC_CAL; type < WCD9XXX_MAX_CAL; type++) {
        struct wcdcal_ioctl_buffer codec_buffer;
        struct param_data calib;
        memset(&calib, 0, sizeof(struct param_data));

        if (!strcmp(cal_name_info[type], "mad_cal"))
            calib.acdb_id = SOUND_TRIGGER_DEVICE_HANDSET_MONO_LOW_POWER_ACDB_ID;
        calib.get_size = 1;
        ret = acdb_loader_get_calibration(cal_name_info[type], sizeof(struct param_data),
                                                                 &calib);
        if (ret < 0) {
            ALOGE("%s get_calibration failed\n", __func__);
            return ret;
        }
        calib.get_size = 0;
        calib.buff = malloc(calib.buff_size);
        ret = acdb_loader_get_calibration(cal_name_info[type],
                              sizeof(struct param_data), &calib);
        if (ret < 0) {
            ALOGE("%s get_calibration failed\n", __func__);
            free(calib.buff);
            return ret;
        }
        codec_buffer.buffer = calib.buff;
        codec_buffer.size = calib.data_size;
        codec_buffer.cal_type = type;
        if (ioctl(fd, SNDRV_CTL_IOCTL_HWDEP_CAL_TYPE, &codec_buffer) < 0)
            ALOGE("Failed to call ioctl  for %s err=%d",
                                  cal_name_info[type], errno);
        ALOGE(" %s cal sent for %s", __func__, cal_name_info[type]);
        free(calib.buff);
    }
    return ret;
}

static void audio_hwdep_send_cal(struct platform_data *plat_data)
{
    int fd;

    fd = hw_util_open(plat_data->adev->snd_card);
    if (fd == -1) {
        ALOGE("%s error open\n", __func__);
        return;
    }
    acdb_loader_get_calibration = (acdb_loader_get_calibration_t)
          dlsym(plat_data->acdb_handle, "acdb_loader_get_calibration");

    if (acdb_loader_get_calibration == NULL) {
        ALOGE("%s: ERROR. dlsym Error:%s acdb_loader_get_calibration", __func__,
           dlerror());
        return;
    }
    if (send_codec_cal(acdb_loader_get_calibration, fd) < 0)
        ALOGE("%s: Could not send anc cal", __FUNCTION__);
}
#endif


static void set_echo_reference(struct audio_device *adev, bool enable)
{
    if (enable)
        audio_route_apply_and_update_path(adev->audio_route, "echo-reference");
    else
        audio_route_reset_and_update_path(adev->audio_route, "echo-reference");

    ALOGV("Setting EC Reference: %d", enable);
}
#ifdef PLATFORM_APQ8084
static struct csd_data *open_csd_client(bool i2s_ext_modem)
#else
static struct csd_data *open_csd_client()
#endif
{
    struct csd_data *csd = calloc(1, sizeof(struct csd_data));

    if (!csd) {
        ALOGE("failed to allocate csd_data mem");
        return NULL;
    }

    csd->csd_client = dlopen(LIB_CSD_CLIENT, RTLD_NOW);
    if (csd->csd_client == NULL) {
        ALOGE("%s: DLOPEN failed for %s", __func__, LIB_CSD_CLIENT);
        goto error;
    } else {
        ALOGV("%s: DLOPEN successful for %s", __func__, LIB_CSD_CLIENT);

        csd->deinit = (deinit_t)dlsym(csd->csd_client,
                                             "csd_client_deinit");
        if (csd->deinit == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_deinit", __func__,
                  dlerror());
            goto error;
        }
        csd->disable_device = (disable_device_t)dlsym(csd->csd_client,
                                             "csd_client_disable_device");
        if (csd->disable_device == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_disable_device",
                  __func__, dlerror());
            goto error;
        }
        csd->enable_device_config = (enable_device_config_t)dlsym(csd->csd_client,
                                               "csd_client_enable_device_config");
        if (csd->enable_device_config == NULL) {
            ALOGV("%s: dlsym error %s for csd_client_enable_device_config",
                  __func__, dlerror());
            // not mandatory
        }
        csd->enable_device = (enable_device_t)dlsym(csd->csd_client,
                                             "csd_client_enable_device");
        if (csd->enable_device == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_enable_device",
                  __func__, dlerror());
            goto error;
        }
        csd->start_voice = (start_voice_t)dlsym(csd->csd_client,
                                             "csd_client_start_voice");
        if (csd->start_voice == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_start_voice",
                  __func__, dlerror());
            goto error;
        }
        csd->stop_voice = (stop_voice_t)dlsym(csd->csd_client,
                                             "csd_client_stop_voice");
        if (csd->stop_voice == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_stop_voice",
                  __func__, dlerror());
            goto error;
        }
        csd->volume = (volume_t)dlsym(csd->csd_client,
                                             "csd_client_volume");
        if (csd->volume == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_volume",
                  __func__, dlerror());
            goto error;
        }
        csd->mic_mute = (mic_mute_t)dlsym(csd->csd_client,
                                             "csd_client_mic_mute");
        if (csd->mic_mute == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_mic_mute",
                  __func__, dlerror());
            goto error;
        }
        csd->slow_talk = (slow_talk_t)dlsym(csd->csd_client,
                                             "csd_client_slow_talk");
        if (csd->slow_talk == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_slow_talk",
                  __func__, dlerror());
            goto error;
        }
        csd->start_playback = (start_playback_t)dlsym(csd->csd_client,
                                             "csd_client_start_playback");
        if (csd->start_playback == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_start_playback",
                  __func__, dlerror());
            goto error;
        }
        csd->stop_playback = (stop_playback_t)dlsym(csd->csd_client,
                                             "csd_client_stop_playback");
        if (csd->stop_playback == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_stop_playback",
                  __func__, dlerror());
            goto error;
        }
        csd->set_lch = (set_lch_t)dlsym(csd->csd_client, "csd_client_set_lch");
        if (csd->set_lch == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_set_lch",
                  __func__, dlerror());
            /* Ignore the error as this is not mandatory function for
             * basic voice call to work.
             */
        }
        csd->start_record = (start_record_t)dlsym(csd->csd_client,
                                             "csd_client_start_record");
        if (csd->start_record == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_start_record",
                  __func__, dlerror());
            goto error;
        }
        csd->stop_record = (stop_record_t)dlsym(csd->csd_client,
                                             "csd_client_stop_record");
        if (csd->stop_record == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_stop_record",
                  __func__, dlerror());
            goto error;
        }
        csd->get_sample_rate = (get_sample_rate_t)dlsym(csd->csd_client,
                                             "csd_client_get_sample_rate");
        if (csd->get_sample_rate == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_get_sample_rate",
                  __func__, dlerror());

            // not mandatory
        }
        csd->init = (init_t)dlsym(csd->csd_client, "csd_client_init");

        if (csd->init == NULL) {
            ALOGE("%s: dlsym error %s for csd_client_init",
                  __func__, dlerror());
            goto error;
        } else {
#ifdef PLATFORM_APQ8084
            csd->init(i2s_ext_modem);
#else
            csd->init();
#endif
        }
    }
    return csd;

error:
    free(csd);
    csd = NULL;
    return csd;
}

void close_csd_client(struct csd_data *csd)
{
    if (csd != NULL) {
        csd->deinit();
        dlclose(csd->csd_client);
        free(csd);
        csd = NULL;
    }
}

#ifdef PLATFORM_APQ8084
static void platform_csd_init(struct platform_data *plat_data)
{
    int32_t modems, (*count_modems)(void);
    const char *name = "libdetectmodem.so";
    const char *func = "count_modems";
    const char *error;

    plat_data->csd = NULL;

    void *lib = dlopen(name, RTLD_NOW);
    error = dlerror();
    if (!lib) {
        ALOGE("%s: could not find %s: %s", __func__, name, error);
        return;
    }

    count_modems = NULL;
    *(void **)(&count_modems) = dlsym(lib, func);
    error = dlerror();
    if (!count_modems) {
        ALOGE("%s: could not find symbol %s in %s: %s",
              __func__, func, name, error);
        goto done;
    }

    modems = count_modems();
    if (modems < 0) {
        ALOGE("%s: count_modems failed\n", __func__);
        goto done;
    }

    ALOGD("%s: num_modems %d\n", __func__, modems);
    if (modems > 0)
        plat_data->csd = open_csd_client(false /*is_i2s_ext_modem*/);

done:
    dlclose(lib);
}
#endif

static void set_platform_defaults(struct platform_data * my_data __unused)
{
    int32_t dev;
    for (dev = 0; dev < SND_DEVICE_MAX; dev++) {
        backend_table[dev] = NULL;
    }

    // TBD - do these go to the platform-info.xml file.
    // will help in avoiding strdups here
    backend_table[SND_DEVICE_IN_BT_SCO_MIC] = strdup("bt-sco");
    backend_table[SND_DEVICE_IN_BT_SCO_MIC_WB] = strdup("bt-sco-wb");
    backend_table[SND_DEVICE_OUT_BT_SCO] = strdup("bt-sco");
    backend_table[SND_DEVICE_OUT_BT_SCO_WB] = strdup("bt-sco-wb");
    backend_table[SND_DEVICE_OUT_HDMI] = strdup("hdmi");
    backend_table[SND_DEVICE_OUT_SPEAKER_AND_HDMI] = strdup("speaker-and-hdmi");
    backend_table[SND_DEVICE_OUT_VOICE_TX] = strdup("afe-proxy");
    backend_table[SND_DEVICE_IN_VOICE_RX] = strdup("afe-proxy");
    backend_table[SND_DEVICE_OUT_AFE_PROXY] = strdup("afe-proxy");
    backend_table[SND_DEVICE_OUT_USB_HEADSET] = strdup("usb-headphones");
    backend_table[SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET] =
        strdup("speaker-and-usb-headphones");
    backend_table[SND_DEVICE_IN_USB_HEADSET_MIC] = strdup("usb-headset-mic");
    backend_table[SND_DEVICE_IN_CAPTURE_FM] = strdup("capture-fm");
    backend_table[SND_DEVICE_OUT_TRANSMISSION_FM] = strdup("transmission-fm");
}

void *platform_init(struct audio_device *adev)
{
    char platform[PROPERTY_VALUE_MAX];
    char baseband[PROPERTY_VALUE_MAX];
    char value[PROPERTY_VALUE_MAX];
    struct platform_data *my_data = NULL;
    int retry_num = 0, snd_card_num = 0;
    const char *snd_card_name;

    my_data = calloc(1, sizeof(struct platform_data));

    if (!my_data) {
        ALOGE("failed to allocate platform data");
        return NULL;
    }

    while (snd_card_num < MAX_SND_CARD) {
        adev->mixer = mixer_open(snd_card_num);

        while (!adev->mixer && retry_num < RETRY_NUMBER) {
            usleep(RETRY_US);
            adev->mixer = mixer_open(snd_card_num);
            retry_num++;
        }

        if (!adev->mixer) {
            ALOGE("%s: Unable to open the mixer card: %d", __func__,
                   snd_card_num);
            retry_num = 0;
            snd_card_num++;
            continue;
        }

        snd_card_name = mixer_get_name(adev->mixer);
        ALOGD("%s: snd_card_name: %s", __func__, snd_card_name);

        my_data->hw_info = hw_info_init(snd_card_name);
        if (!my_data->hw_info) {
            ALOGE("%s: Failed to init hardware info", __func__);
        } else {
            if (!strncmp(snd_card_name, "msm8226-tomtom-snd-card",
                         sizeof("msm8226-tomtom-snd-card"))) {
                ALOGE("%s: Call MIXER_XML_PATH_WCD9330", __func__);

                adev->audio_route = audio_route_init(snd_card_num,
                                                     MIXER_XML_PATH_WCD9330);
            } else if (audio_extn_read_xml(adev, snd_card_num, MIXER_XML_PATH,
                                    MIXER_XML_PATH_AUXPCM) == -ENOSYS)
                adev->audio_route = audio_route_init(snd_card_num,
                                                 MIXER_XML_PATH);
            if (!adev->audio_route) {
                ALOGE("%s: Failed to init audio route controls, aborting.",
                       __func__);
                free(my_data);
                return NULL;
            }
            adev->snd_card = snd_card_num;
            ALOGD("%s: Opened sound card:%d", __func__, snd_card_num);
            break;
        }
        retry_num = 0;
        snd_card_num++;
    }

    if (snd_card_num >= MAX_SND_CARD) {
        ALOGE("%s: Unable to find correct sound card, aborting.", __func__);
        free(my_data);
        return NULL;
    }

    my_data->adev = adev;
    my_data->btsco_sample_rate = SAMPLE_RATE_8KHZ;
    my_data->fluence_in_spkr_mode = false;
    my_data->fluence_in_voice_call = false;
    my_data->fluence_in_voice_rec = false;
    my_data->fluence_in_audio_rec = false;
    my_data->fluence_type = FLUENCE_NONE;

    property_get("ro.qc.sdk.audio.fluencetype", my_data->fluence_cap, "");
    if (!strncmp("fluencepro", my_data->fluence_cap, sizeof("fluencepro"))) {
        my_data->fluence_type = FLUENCE_QUAD_MIC | FLUENCE_DUAL_MIC;
    } else if (!strncmp("fluence", my_data->fluence_cap, sizeof("fluence"))) {
        my_data->fluence_type = FLUENCE_DUAL_MIC;
    } else {
        my_data->fluence_type = FLUENCE_NONE;
    }

    if (my_data->fluence_type != FLUENCE_NONE) {
        property_get("persist.audio.fluence.voicecall",value,"");
        if (!strncmp("true", value, sizeof("true"))) {
            my_data->fluence_in_voice_call = true;
        }

        property_get("persist.audio.fluence.voicerec",value,"");
        if (!strncmp("true", value, sizeof("true"))) {
            my_data->fluence_in_voice_rec = true;
        }

        property_get("persist.audio.fluence.audiorec",value,"");
        if (!strncmp("true", value, sizeof("true"))) {
            my_data->fluence_in_audio_rec = true;
        }

        property_get("persist.audio.fluence.speaker",value,"");
        if (!strncmp("true", value, sizeof("true"))) {
            my_data->fluence_in_spkr_mode = true;
        }
    }

    my_data->voice_feature_set = VOICE_FEATURE_SET_DEFAULT;
    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);
    } else {
        ALOGV("%s: DLOPEN successful for %s", __func__, LIB_ACDB_LOADER);
        my_data->acdb_deallocate = (acdb_deallocate_t)dlsym(my_data->acdb_handle,
                                                    "acdb_loader_deallocate_ACDB");
        if (!my_data->acdb_deallocate)
            ALOGE("%s: Could not find the symbol acdb_loader_deallocate_ACDB from %s",
                  __func__, LIB_ACDB_LOADER);

        my_data->acdb_send_audio_cal = (acdb_send_audio_cal_t)dlsym(my_data->acdb_handle,
                                                    "acdb_loader_send_audio_cal");
        if (!my_data->acdb_send_audio_cal)
            ALOGE("%s: Could not find the symbol acdb_send_audio_cal from %s",
                  __func__, LIB_ACDB_LOADER);

        my_data->acdb_send_voice_cal = (acdb_send_voice_cal_t)dlsym(my_data->acdb_handle,
                                                    "acdb_loader_send_voice_cal");
        if (!my_data->acdb_send_voice_cal)
            ALOGE("%s: Could not find the symbol acdb_loader_send_voice_cal from %s",
                  __func__, LIB_ACDB_LOADER);

        my_data->acdb_reload_vocvoltable = (acdb_reload_vocvoltable_t)dlsym(my_data->acdb_handle,
                                                    "acdb_loader_reload_vocvoltable");
        if (!my_data->acdb_reload_vocvoltable)
            ALOGE("%s: Could not find the symbol acdb_loader_reload_vocvoltable from %s",
                  __func__, LIB_ACDB_LOADER);
#ifdef HUAWEI_SOUND_PARAM_PATH
        my_data->acdb_set_param_path = (acdb_set_param_path_t)dlsym(my_data->acdb_handle,
                                                    "acdb_loader_set_param_path");
        if (!my_data->acdb_set_param_path)
            ALOGE("%s: Could not find the symbol acdb_loader_set_param_path from %s",
                  __func__, LIB_ACDB_LOADER);
        else
            my_data->acdb_set_param_path(HUAWEI_SOUND_PARAM_PATH);
#endif
        my_data->acdb_init = (acdb_init_t)dlsym(my_data->acdb_handle,
                                                    "acdb_loader_init_ACDB");
        if (my_data->acdb_init == NULL)
            ALOGE("%s: dlsym error %s for acdb_loader_init_ACDB", __func__, dlerror());
        else
            my_data->acdb_init();
    }

    set_platform_defaults(my_data);

    /* Initialize ACDB ID's */
    platform_info_init();
#ifdef PLATFORM_APQ8084
    /* If platform is apq8084, load CSD Client specific symbols.
     * Voice call is handled by MDM and apps processor talks to
     * MDM through CSD Client
     */
    platform_csd_init(my_data);
#endif
    /* init usb */
    audio_extn_usb_init(adev);
    /* update sound cards appropriately */
    audio_extn_usb_set_proxy_sound_card(adev->snd_card);

    /* Read one time ssr property */
    audio_extn_ssr_update_enabled();
    audio_extn_spkr_prot_init(adev);
#ifdef HWDEP_CAL_ENABLED
    audio_hwdep_send_cal(my_data);
#endif
    return my_data;
}

void platform_deinit(void *platform)
{
    struct platform_data *my_data = (struct platform_data *)platform;

    hw_info_deinit(my_data->hw_info);
    close_csd_client(my_data->csd);

    int32_t dev;
    for (dev = 0; dev < SND_DEVICE_MAX; dev++) {
        if (backend_table[dev]) {
            free(backend_table[dev]);
            backend_table[dev]= NULL;
        }
    }

    free(platform);
    /* deinit usb */
    audio_extn_usb_deinit();
}

const char *platform_get_snd_device_name(snd_device_t snd_device)
{
    if (snd_device >= SND_DEVICE_MIN && snd_device < SND_DEVICE_MAX)
        return device_table[snd_device];
    else
        return "";
}

int platform_get_snd_device_name_extn(void *platform, snd_device_t snd_device,
                                      char *device_name)
{
    struct platform_data *my_data = (struct platform_data *)platform;

    if (snd_device >= SND_DEVICE_MIN && snd_device < SND_DEVICE_MAX) {
        strlcpy(device_name, device_table[snd_device], DEVICE_NAME_MAX_SIZE);
        hw_info_append_hw_type(my_data->hw_info, snd_device, device_name);
    } else {
        strlcpy(device_name, "", DEVICE_NAME_MAX_SIZE);
        return -EINVAL;
    }

    return 0;
}

void platform_add_backend_name(char *mixer_path, snd_device_t snd_device)
{
    if ((snd_device < SND_DEVICE_MIN) || (snd_device >= SND_DEVICE_MAX)) {
        ALOGE("%s: Invalid snd_device = %d", __func__, snd_device);
        return;
    }

    const char * suffix = backend_table[snd_device];

    if (suffix != NULL) {
        strlcat(mixer_path, " ", MIXER_PATH_MAX_LENGTH);
        strlcat(mixer_path, suffix, MIXER_PATH_MAX_LENGTH);
    }
}

int platform_get_pcm_device_id(audio_usecase_t usecase, int device_type)
{
    int device_id;
    if (device_type == PCM_PLAYBACK)
        device_id = pcm_device_table[usecase][0];
    else
        device_id = pcm_device_table[usecase][1];
    return device_id;
}

static int find_index(struct name_to_index * table, int32_t len, const char * name)
{
    int ret = 0;
    int32_t i;

    if (table == NULL) {
        ALOGE("%s: table is NULL", __func__);
        ret = -ENODEV;
        goto done;
    }

    if (name == NULL) {
        ALOGE("null key");
        ret = -ENODEV;
        goto done;
    }

    for (i=0; i < len; i++) {
        const char* tn = table[i].name;
        uint32_t len = strlen(tn);
        if (strncmp(tn, name, len) == 0) {
            if (strlen(name) != len) {
                continue; // substring
            }
            ret = table[i].index;
            goto done;
        }
    }
    ALOGE("%s: Could not find index for name = %s",
            __func__, name);
    ret = -ENODEV;
done:
    return ret;
}

int platform_get_snd_device_index(char *device_name)
{
    return find_index(snd_device_name_index, SND_DEVICE_MAX, device_name);
}

int platform_get_usecase_index(const char *usecase_name)
{
    return find_index(usecase_name_index, AUDIO_USECASE_MAX, usecase_name);
}

int platform_set_snd_device_acdb_id(snd_device_t snd_device, unsigned int acdb_id)
{
    int ret = 0;

    if ((snd_device < SND_DEVICE_MIN) || (snd_device >= SND_DEVICE_MAX)) {
        ALOGE("%s: Invalid snd_device = %d",
            __func__, snd_device);
        ret = -EINVAL;
        goto done;
    }

    acdb_device_table[snd_device] = acdb_id;
done:
    return ret;
}

#ifdef FLUENCE_ENABLED
int platform_set_fluence_type(void *platform, char *value)
{
    int ret = 0;
    int fluence_type = FLUENCE_NONE;
    int fluence_flag = NONE_FLAG;
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;

    ALOGV("%s: fluence type:%d", __func__, my_data->fluence_type);

    /* only dual mic turn on and off is supported as of now through setparameters */
    if (!strncmp(AUDIO_PARAMETER_VALUE_DUALMIC,value, sizeof(AUDIO_PARAMETER_VALUE_DUALMIC))) {
        if (!strncmp("fluencepro", my_data->fluence_cap, sizeof("fluencepro")) ||
            !strncmp("fluence", my_data->fluence_cap, sizeof("fluence"))) {
            ALOGV("fluence dualmic feature enabled \n");
            fluence_type = FLUENCE_DUAL_MIC;
            fluence_flag = DMIC_FLAG;
        } else {
            ALOGE("%s: Failed to set DUALMIC", __func__);
            ret = -1;
            goto done;
        }
    } else if (!strncmp(AUDIO_PARAMETER_KEY_NO_FLUENCE, value, sizeof(AUDIO_PARAMETER_KEY_NO_FLUENCE))) {
        ALOGV("fluence disabled");
        fluence_type = FLUENCE_NONE;
    } else {
        ALOGE("Invalid fluence value : %s",value);
        ret = -1;
        goto done;
    }

    if (fluence_type != my_data->fluence_type) {
        ALOGV("%s: Updating fluence_type to :%d", __func__, fluence_type);
        my_data->fluence_type = fluence_type;
        adev->acdb_settings = (adev->acdb_settings & FLUENCE_MODE_CLEAR) | fluence_flag;
    }
done:
    return ret;
}


int platform_get_fluence_type(void *platform, char *value, uint32_t len)
{
    int ret = 0;
    struct platform_data *my_data = (struct platform_data *)platform;

    if (my_data->fluence_type == FLUENCE_QUAD_MIC) {
        strlcpy(value, "quadmic", len);
    } else if (my_data->fluence_type == FLUENCE_DUAL_MIC) {
        strlcpy(value, "dualmic", len);
    } else if (my_data->fluence_type == FLUENCE_NONE) {
        strlcpy(value, "none", len);
    } else
        ret = -1;

    return ret;
}
#endif

int platform_send_audio_calibration(void *platform, snd_device_t snd_device)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    int acdb_dev_id, acdb_dev_type;

    acdb_dev_id = acdb_device_table[snd_device];
    if (acdb_dev_id < 0) {
        ALOGE("%s: Could not find acdb id for device(%d)",
              __func__, snd_device);
        return -EINVAL;
    }
    if (my_data->acdb_send_audio_cal) {
        ALOGI("%s: sending audio calibration for snd_device(%d) acdb_id(%d)",
              __func__, snd_device, acdb_dev_id);
        if (snd_device >= SND_DEVICE_OUT_BEGIN &&
                snd_device < SND_DEVICE_OUT_END)
            acdb_dev_type = ACDB_DEV_TYPE_OUT;
        else
            acdb_dev_type = ACDB_DEV_TYPE_IN;
        my_data->acdb_send_audio_cal(acdb_dev_id, acdb_dev_type);
    }
    return 0;
}

int platform_switch_voice_call_device_pre(void *platform)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    int ret = 0;

    if (my_data->csd != NULL &&
        my_data->adev->mode == AUDIO_MODE_IN_CALL) {
        /* This must be called before disabling mixer controls on APQ side */
        ret = my_data->csd->disable_device();
        if (ret < 0) {
            ALOGE("%s: csd_client_disable_device, failed, error %d",
                  __func__, ret);
        }
    }
    return ret;
}

int platform_switch_voice_call_device_post(void *platform,
                                           snd_device_t out_snd_device,
                                           snd_device_t in_snd_device)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    int acdb_rx_id, acdb_tx_id;

#ifdef PLATFORM_APQ8084
    if (my_data->csd == NULL)
        return 0;
#else
    if (my_data->acdb_send_voice_cal == NULL)
        ALOGE("%s: dlsym error for acdb_send_voice_call", __func__);
#endif

    if (out_snd_device == SND_DEVICE_OUT_VOICE_SPEAKER &&
        audio_extn_spkr_prot_is_enabled()) {
        acdb_rx_id = acdb_device_table[SND_DEVICE_OUT_SPEAKER_PROTECTED];
    } else {
        acdb_rx_id = acdb_device_table[out_snd_device];
        acdb_tx_id = acdb_device_table[in_snd_device];

        if (acdb_rx_id > 0 && acdb_tx_id > 0)
#ifdef PLATFORM_APQ8084
            my_data->csd->enable_device_config(acdb_rx_id, acdb_tx_id);
#else
            my_data->acdb_send_voice_cal(acdb_rx_id, acdb_tx_id);
#endif
        else
            ALOGE("%s: Incorrect ACDB IDs (rx: %d tx: %d)", __func__,
                  acdb_rx_id, acdb_tx_id);
    }

    return 0;
}

int platform_switch_voice_call_usecase_route_post(void *platform,
                                                  snd_device_t out_snd_device,
                                                  snd_device_t in_snd_device)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    int acdb_rx_id, acdb_tx_id;
    int ret = 0;

    acdb_rx_id = acdb_device_table[out_snd_device];
    acdb_tx_id = acdb_device_table[in_snd_device];

    if (my_data->csd != NULL) {
        if (acdb_rx_id > 0 && acdb_tx_id > 0) {
            ret = my_data->csd->enable_device(acdb_rx_id, acdb_tx_id,
                                              my_data->adev->acdb_settings);
            if (ret < 0) {
                ALOGE("%s: csd_enable_device, failed, error %d",
                      __func__, ret);
            }
        } else {
            ALOGE("%s: Incorrect ACDB IDs (rx: %d tx: %d)", __func__,
                  acdb_rx_id, acdb_tx_id);
        }
    }
    return ret;
}

int platform_start_voice_call(void *platform, uint32_t vsid)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    int ret = 0;

    if (my_data->csd != NULL) {
        ret = my_data->csd->start_voice(vsid);
        if (ret < 0) {
            ALOGE("%s: csd_start_voice error %d\n", __func__, ret);
        }
    }
    return ret;
}

int platform_stop_voice_call(void *platform, uint32_t vsid)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    int ret = 0;

    if (my_data->csd != NULL) {
        ret = my_data->csd->stop_voice(vsid);
        if (ret < 0) {
            ALOGE("%s: csd_stop_voice error %d\n", __func__, ret);
        }
    }
    return ret;
}

int platform_set_voice_volume(void *platform, int volume)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    struct mixer_ctl *ctl;
    const char *mixer_ctl_name = "Voice Rx Gain";
    int vol_index = 0, ret = 0;
    uint32_t set_values[ ] = {0,
                              ALL_SESSION_VSID,
                              DEFAULT_VOLUME_RAMP_DURATION_MS};

    // Voice volume levels are mapped to adsp volume levels as follows.
    // 100 -> 5, 80 -> 4, 60 -> 3, 40 -> 2, 20 -> 1  0 -> 0
    // But this values don't changed in kernel. So, below change is need.
    vol_index = (int)percent_to_index(volume, MIN_VOL_INDEX, MAX_VOL_INDEX);
    set_values[0] = vol_index;

    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, mixer_ctl_name);
        return -EINVAL;
    }
    ALOGV("Setting voice volume index: %d", set_values[0]);
    mixer_ctl_set_array(ctl, set_values, ARRAY_SIZE(set_values));

    if (my_data->csd != NULL) {
        ret = my_data->csd->volume(ALL_SESSION_VSID, volume);
        if (ret < 0) {
            ALOGE("%s: csd_volume error %d", __func__, ret);
        }
    }
    return ret;
}

int platform_set_mic_mute(void *platform, bool state)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    struct mixer_ctl *ctl;
    const char *mixer_ctl_name = "Voice Tx Mute";
    int ret = 0;
    uint32_t set_values[ ] = {0,
                              ALL_SESSION_VSID,
                              DEFAULT_VOLUME_RAMP_DURATION_MS};

    set_values[0] = state;
    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, mixer_ctl_name);
        return -EINVAL;
    }
    ALOGV("Setting voice mute state: %d", state);
    mixer_ctl_set_array(ctl, set_values, ARRAY_SIZE(set_values));

    if (my_data->csd != NULL) {
        ret = my_data->csd->mic_mute(ALL_SESSION_VSID, state);
        if (ret < 0) {
            ALOGE("%s: csd_mic_mute error %d", __func__, ret);
        }
    }
    return ret;
}

int platform_set_device_mute(void *platform, bool state, char *dir)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    struct mixer_ctl *ctl;
    char *mixer_ctl_name = NULL;
    int ret = 0;
    uint32_t set_values[ ] = {0,
                              ALL_SESSION_VSID,
                              0};
    if(dir == NULL) {
        ALOGE("%s: Invalid direction:%s", __func__, dir);
        return -EINVAL;
    }

    if (!strncmp("rx", dir, sizeof("rx"))) {
        mixer_ctl_name = "Voice Rx Device Mute";
    } else if (!strncmp("tx", dir, sizeof("tx"))) {
        mixer_ctl_name = "Voice Tx Device Mute";
    } else {
        return -EINVAL;
    }

    set_values[0] = state;
    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, mixer_ctl_name);
        return -EINVAL;
    }

    ALOGV("%s: Setting device mute state: %d, mixer ctrl:%s",
          __func__,state, mixer_ctl_name);
    mixer_ctl_set_array(ctl, set_values, ARRAY_SIZE(set_values));

    return ret;
}

snd_device_t platform_get_output_snd_device(void *platform, audio_devices_t devices)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    audio_mode_t mode = adev->mode;
    snd_device_t snd_device = SND_DEVICE_NONE;

    audio_channel_mask_t channel_mask = (adev->active_input == NULL) ?
                                AUDIO_CHANNEL_IN_MONO : adev->active_input->channel_mask;
    int channel_count = popcount(channel_mask);

    ALOGV("%s: enter: output devices(%#x)", __func__, devices);
    if (devices == AUDIO_DEVICE_NONE ||
        devices & AUDIO_DEVICE_BIT_IN) {
        ALOGV("%s: Invalid output devices (%#x)", __func__, devices);
        goto exit;
    }

    if (popcount(devices) == 2) {
        if (devices == (AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
                        AUDIO_DEVICE_OUT_SPEAKER)) {
            snd_device = SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES;
        } else if (devices == (AUDIO_DEVICE_OUT_WIRED_HEADSET |
                               AUDIO_DEVICE_OUT_SPEAKER)) {
            if (audio_extn_get_anc_enabled())
                snd_device = SND_DEVICE_OUT_SPEAKER_AND_ANC_HEADSET;
            else
                snd_device = SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES;
        } else if (devices == (AUDIO_DEVICE_OUT_AUX_DIGITAL |
                               AUDIO_DEVICE_OUT_SPEAKER)) {
            snd_device = SND_DEVICE_OUT_SPEAKER_AND_HDMI;
        } else if ((devices == (AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET |
                               AUDIO_DEVICE_OUT_SPEAKER)) ||
                    devices == (AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET |
                               AUDIO_DEVICE_OUT_SPEAKER)) {
            snd_device = SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET;
        } else {
            ALOGE("%s: Invalid combo device(%#x)", __func__, devices);
            goto exit;
        }
        if (snd_device != SND_DEVICE_NONE) {
            goto exit;
        }
    }

    if (popcount(devices) != 1) {
        ALOGE("%s: Invalid output devices(%#x)", __func__, devices);
        goto exit;
    }

    if ((mode == AUDIO_MODE_IN_CALL) ||
        voice_extn_compress_voip_is_active(adev)) {
        if (devices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE ||
            devices & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
            if ((adev->voice.tty_mode != TTY_MODE_OFF) &&
                !voice_extn_compress_voip_is_active(adev)) {
                switch (adev->voice.tty_mode) {
                case TTY_MODE_FULL:
                    snd_device = SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES;
                    break;
                case TTY_MODE_VCO:
                    snd_device = SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES;
                    break;
                case TTY_MODE_HCO:
                    snd_device = SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET;
                    break;
                default:
                    ALOGE("%s: Invalid TTY mode (%#x)",
                          __func__, adev->voice.tty_mode);
                }
            } else if (audio_extn_get_anc_enabled()) {
                if (audio_extn_should_use_fb_anc())
                    snd_device = SND_DEVICE_OUT_VOICE_ANC_FB_HEADSET;
                else
                    snd_device = SND_DEVICE_OUT_VOICE_ANC_HEADSET;
            } else {
                if (voice_extn_compress_voip_is_active(adev) &&
                        voice_extn_dedicated_voip_device_prop_check()) {
                    snd_device = SND_DEVICE_OUT_VOIP_HEADPHONES;
                } else {
                    snd_device = SND_DEVICE_OUT_VOICE_HEADPHONES;
                }
            }
        } else if (devices & AUDIO_DEVICE_OUT_ALL_SCO) {
            if (my_data->btsco_sample_rate == SAMPLE_RATE_16KHZ)
                snd_device = SND_DEVICE_OUT_BT_SCO_WB;
            else
                snd_device = SND_DEVICE_OUT_BT_SCO;
        } else if (devices & AUDIO_DEVICE_OUT_SPEAKER) {
            if (voice_extn_compress_voip_is_active(adev) &&
                    voice_extn_dedicated_voip_device_prop_check()) {
                snd_device = SND_DEVICE_OUT_VOIP_SPEAKER;
            } else {
                snd_device = SND_DEVICE_OUT_VOICE_SPEAKER;
            }
        } else if (devices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET ||
                   devices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET) {
            snd_device = SND_DEVICE_OUT_USB_HEADSET;
#ifdef FM_ENABLED
        } else if (devices & AUDIO_DEVICE_OUT_FM_TX) {
            snd_device = SND_DEVICE_OUT_TRANSMISSION_FM;
#endif
        } else if (devices & AUDIO_DEVICE_OUT_EARPIECE) {
            if (audio_extn_should_use_handset_anc(channel_count))
                snd_device = SND_DEVICE_OUT_ANC_HANDSET;
            else if (voice_extn_compress_voip_is_active(adev) &&
                    voice_extn_dedicated_voip_device_prop_check())
                snd_device = SND_DEVICE_OUT_VOIP_HANDSET;
            else
                snd_device = SND_DEVICE_OUT_VOICE_HANDSET;
        } else if (devices & AUDIO_DEVICE_OUT_TELEPHONY_TX)
                snd_device = SND_DEVICE_OUT_VOICE_TX;

        if (snd_device != SND_DEVICE_NONE) {
            goto exit;
        }
    }

    if (devices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE ||
        devices & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
        if (devices & AUDIO_DEVICE_OUT_WIRED_HEADSET
            && audio_extn_get_anc_enabled()) {
            if (audio_extn_should_use_fb_anc())
                snd_device = SND_DEVICE_OUT_ANC_FB_HEADSET;
            else
                snd_device = SND_DEVICE_OUT_ANC_HEADSET;
        }
        else
            snd_device = SND_DEVICE_OUT_HEADPHONES;
    } else if (devices & AUDIO_DEVICE_OUT_SPEAKER) {
        if (adev->speaker_lr_swap)
            snd_device = SND_DEVICE_OUT_SPEAKER_REVERSE;
        else
            snd_device = SND_DEVICE_OUT_SPEAKER;
    } else if (devices & AUDIO_DEVICE_OUT_ALL_SCO) {
        if (my_data->btsco_sample_rate == SAMPLE_RATE_16KHZ)
            snd_device = SND_DEVICE_OUT_BT_SCO_WB;
        else
            snd_device = SND_DEVICE_OUT_BT_SCO;
    } else if (devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
        snd_device = SND_DEVICE_OUT_HDMI ;
    } else if (devices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET ||
               devices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET) {
        ALOGD("%s: setting USB hadset channel capability(2) for Proxy", __func__);
        audio_extn_set_afe_proxy_channel_mixer(adev, 2);
        snd_device = SND_DEVICE_OUT_USB_HEADSET;
#ifdef FM_ENABLED
    } else if (devices & AUDIO_DEVICE_OUT_FM_TX) {
        snd_device = SND_DEVICE_OUT_TRANSMISSION_FM;
#endif
    } else if (devices & AUDIO_DEVICE_OUT_EARPIECE) {
        snd_device = SND_DEVICE_OUT_HANDSET;
#ifdef AFE_PROXY_ENABLED
    } else if (devices & AUDIO_DEVICE_OUT_PROXY) {
        channel_count = audio_extn_get_afe_proxy_channel_count();
        ALOGD("%s: setting sink capability(%d) for Proxy", __func__, channel_count);
        audio_extn_set_afe_proxy_channel_mixer(adev, channel_count);
        snd_device = SND_DEVICE_OUT_AFE_PROXY;
#endif
    } else {
        ALOGE("%s: Unknown device(s) %#x", __func__, devices);
    }
exit:
    ALOGV("%s: exit: snd_device(%s)", __func__, device_table[snd_device]);
    return snd_device;
}

snd_device_t platform_get_input_snd_device(void *platform, audio_devices_t out_device)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    audio_source_t  source = (adev->active_input == NULL) ?
                                AUDIO_SOURCE_DEFAULT : adev->active_input->source;

    audio_mode_t    mode   = adev->mode;
    audio_devices_t in_device = ((adev->active_input == NULL) ?
                                    AUDIO_DEVICE_NONE : adev->active_input->device)
                                & ~AUDIO_DEVICE_BIT_IN;
    audio_channel_mask_t channel_mask = (adev->active_input == NULL) ?
                                AUDIO_CHANNEL_IN_MONO : adev->active_input->channel_mask;
    snd_device_t snd_device = SND_DEVICE_NONE;
    int channel_count = popcount(channel_mask);

    ALOGV("%s: enter: out_device(%#x) in_device(%#x)",
          __func__, out_device, in_device);
    if ((out_device != AUDIO_DEVICE_NONE) && ((mode == AUDIO_MODE_IN_CALL) ||
        voice_extn_compress_voip_is_active(adev) || audio_extn_hfp_is_active(adev))) {
        if ((adev->voice.tty_mode != TTY_MODE_OFF) &&
            !voice_extn_compress_voip_is_active(adev)) {
            if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE ||
                out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
                switch (adev->voice.tty_mode) {
                case TTY_MODE_FULL:
                    snd_device = SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC;
                    break;
                case TTY_MODE_VCO:
                    snd_device = SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC;
                    break;
                case TTY_MODE_HCO:
                    snd_device = SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC;
                    break;
                default:
                    ALOGE("%s: Invalid TTY mode (%#x)",
                          __func__, adev->voice.tty_mode);
                }
                goto exit;
            }
        }
        if (out_device & AUDIO_DEVICE_OUT_EARPIECE ||
            out_device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE) {
            if (out_device & AUDIO_DEVICE_OUT_EARPIECE &&
                audio_extn_should_use_handset_anc(channel_count)) {
                snd_device = SND_DEVICE_IN_AANC_HANDSET_MIC;
            } else if (my_data->fluence_type == FLUENCE_NONE ||
                my_data->fluence_in_voice_call == false) {
                snd_device = SND_DEVICE_IN_HANDSET_MIC;
                set_echo_reference(adev, true);
            } else {
                snd_device = SND_DEVICE_IN_VOICE_DMIC;
                adev->acdb_settings |= DMIC_FLAG;
            }
        } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
            snd_device = SND_DEVICE_IN_VOICE_HEADSET_MIC;
            set_echo_reference(adev, true);
        } else if (out_device & AUDIO_DEVICE_OUT_ALL_SCO) {
            if (my_data->btsco_sample_rate == SAMPLE_RATE_16KHZ)
                snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
            else
                snd_device = SND_DEVICE_IN_BT_SCO_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_SPEAKER) {
            if (my_data->fluence_type != FLUENCE_NONE &&
                my_data->fluence_in_voice_call &&
                my_data->fluence_in_spkr_mode) {
                if(my_data->fluence_type & FLUENCE_QUAD_MIC) {
                    adev->acdb_settings |= QMIC_FLAG;
                    snd_device = SND_DEVICE_IN_VOICE_SPEAKER_QMIC;
                } else {
                    adev->acdb_settings |= DMIC_FLAG;
                    snd_device = SND_DEVICE_IN_VOICE_SPEAKER_DMIC;
                }
            } else {
                snd_device = SND_DEVICE_IN_VOICE_SPEAKER_MIC;
                set_echo_reference(adev, true);
            }
        } else if (out_device & AUDIO_DEVICE_OUT_TELEPHONY_TX)
            snd_device = SND_DEVICE_IN_VOICE_RX;
    } else if (source == AUDIO_SOURCE_CAMCORDER) {
        if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC ||
            in_device & AUDIO_DEVICE_IN_BACK_MIC) {
            snd_device = SND_DEVICE_IN_CAMCORDER_MIC;
        }
    } else if (source == AUDIO_SOURCE_VOICE_RECOGNITION) {
        if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
            if (channel_count == 2) {
                snd_device = SND_DEVICE_IN_VOICE_REC_DMIC_STEREO;
                adev->acdb_settings |= DMIC_FLAG;
            } else if (adev->active_input->enable_ns)
                snd_device = SND_DEVICE_IN_VOICE_REC_MIC_NS;
            else if (my_data->fluence_type != FLUENCE_NONE &&
                     my_data->fluence_in_voice_rec) {
                snd_device = SND_DEVICE_IN_VOICE_REC_DMIC_FLUENCE;
                adev->acdb_settings |= DMIC_FLAG;
            } else {
                snd_device = SND_DEVICE_IN_VOICE_REC_MIC;
            }
        }
    } else if (source == AUDIO_SOURCE_VOICE_COMMUNICATION ||
               (mode == AUDIO_MODE_IN_COMMUNICATION)) {
        if (out_device & AUDIO_DEVICE_OUT_SPEAKER)
            in_device = (AUDIO_DEVICE_IN_BACK_MIC & ~AUDIO_DEVICE_BIT_IN);
        if (adev->active_input) {
            if (voice_extn_dedicated_voip_device_prop_check()) {
                if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
                    snd_device = SND_DEVICE_IN_VOIP_SPEAKER_MIC;
                } else if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
                    snd_device = SND_DEVICE_IN_VOIP_HANDSET_MIC;
                } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
                    snd_device = SND_DEVICE_IN_VOIP_HEADSET_MIC;
                }
            } else if (adev->active_input->enable_aec &&
                    adev->active_input->enable_ns) {
                if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
                    if (my_data->fluence_type & FLUENCE_DUAL_MIC &&
                       my_data->fluence_in_spkr_mode) {
                        snd_device = SND_DEVICE_IN_SPEAKER_DMIC_AEC_NS;
                        adev->acdb_settings |= DMIC_FLAG;
                    } else
                        snd_device = SND_DEVICE_IN_SPEAKER_MIC_AEC_NS;
                } else if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
                    if (my_data->fluence_type & FLUENCE_DUAL_MIC) {
                        snd_device = SND_DEVICE_IN_HANDSET_DMIC_AEC_NS;
                        adev->acdb_settings |= DMIC_FLAG;
                    } else
                        snd_device = SND_DEVICE_IN_HANDSET_MIC_AEC_NS;
                } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
                    snd_device = SND_DEVICE_IN_HEADSET_MIC_FLUENCE;
                }
                set_echo_reference(adev, true);
            } else if (adev->active_input->enable_aec) {
                if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
                    if (my_data->fluence_type & FLUENCE_DUAL_MIC) {
                        snd_device = SND_DEVICE_IN_SPEAKER_DMIC_AEC;
                        adev->acdb_settings |= DMIC_FLAG;
                    } else
                        snd_device = SND_DEVICE_IN_SPEAKER_MIC_AEC;
                } else if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
                    if (my_data->fluence_type & FLUENCE_DUAL_MIC) {
                        snd_device = SND_DEVICE_IN_HANDSET_DMIC_AEC;
                        adev->acdb_settings |= DMIC_FLAG;
                    } else
                        snd_device = SND_DEVICE_IN_HANDSET_MIC_AEC;
                } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
                    snd_device = SND_DEVICE_IN_HEADSET_MIC_FLUENCE;
                }
                set_echo_reference(adev, true);
            } else if (adev->active_input->enable_ns) {
                if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
                    if (my_data->fluence_type & FLUENCE_DUAL_MIC) {
                        snd_device = SND_DEVICE_IN_SPEAKER_DMIC_NS;
                        adev->acdb_settings |= DMIC_FLAG;
                    } else
                        snd_device = SND_DEVICE_IN_SPEAKER_MIC_NS;
                } else if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
                    if (my_data->fluence_type & FLUENCE_DUAL_MIC) {
                        snd_device = SND_DEVICE_IN_HANDSET_DMIC_NS;
                        adev->acdb_settings |= DMIC_FLAG;
                    } else
                        snd_device = SND_DEVICE_IN_HANDSET_MIC_NS;
                } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
                    snd_device = SND_DEVICE_IN_HEADSET_MIC_FLUENCE;
                }
                set_echo_reference(adev, false);
            } else
                set_echo_reference(adev, false);
        }
    } else if (source == AUDIO_SOURCE_MIC) {
        if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC &&
                channel_count == 1 ) {
            if(my_data->fluence_type & FLUENCE_DUAL_MIC &&
                    my_data->fluence_in_audio_rec) {
                snd_device = SND_DEVICE_IN_HANDSET_DMIC;
                set_echo_reference(adev, true);
            }
        }
    } else if (source == AUDIO_SOURCE_FM_TUNER) {
        snd_device = SND_DEVICE_IN_CAPTURE_FM;
    } else if (source == AUDIO_SOURCE_DEFAULT) {
        goto exit;
    }


    if (snd_device != SND_DEVICE_NONE) {
        goto exit;
    }

    if (in_device != AUDIO_DEVICE_NONE &&
            !(in_device & AUDIO_DEVICE_IN_VOICE_CALL) &&
            !(in_device & AUDIO_DEVICE_IN_COMMUNICATION)) {
        if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
            if (audio_extn_ssr_get_enabled() && channel_count == 6)
                snd_device = SND_DEVICE_IN_QUAD_MIC;
            else if (my_data->fluence_type & (FLUENCE_DUAL_MIC | FLUENCE_QUAD_MIC) &&
                    channel_count == 2)
                snd_device = SND_DEVICE_IN_HANDSET_STEREO_DMIC;
            else
                snd_device = SND_DEVICE_IN_HANDSET_MIC;
        } else if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
            snd_device = SND_DEVICE_IN_SPEAKER_MIC;
        } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
            snd_device = SND_DEVICE_IN_HEADSET_MIC;
        } else if (in_device & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
            if (my_data->btsco_sample_rate == SAMPLE_RATE_16KHZ)
                snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
            else
                snd_device = SND_DEVICE_IN_BT_SCO_MIC;
        } else if (in_device & AUDIO_DEVICE_IN_AUX_DIGITAL) {
            snd_device = SND_DEVICE_IN_HDMI_MIC;
        } else if (in_device & AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET ||
                   in_device & AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET) {
            snd_device = SND_DEVICE_IN_USB_HEADSET_MIC;
        } else if (in_device & AUDIO_DEVICE_IN_FM_TUNER) {
            snd_device = SND_DEVICE_IN_CAPTURE_FM;
        } else {
            ALOGE("%s: Unknown input device(s) %#x", __func__, in_device);
            ALOGW("%s: Using default handset-mic", __func__);
            snd_device = SND_DEVICE_IN_HANDSET_MIC;
        }
    } else {
        if (out_device & AUDIO_DEVICE_OUT_EARPIECE) {
            snd_device = SND_DEVICE_IN_HANDSET_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
            snd_device = SND_DEVICE_IN_HEADSET_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_SPEAKER) {
            if (channel_count > 1)
                snd_device = SND_DEVICE_IN_SPEAKER_STEREO_DMIC;
            else
                snd_device = SND_DEVICE_IN_SPEAKER_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE) {
            snd_device = SND_DEVICE_IN_HANDSET_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET) {
            if (my_data->btsco_sample_rate == SAMPLE_RATE_16KHZ)
                snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
            else
                snd_device = SND_DEVICE_IN_BT_SCO_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
            snd_device = SND_DEVICE_IN_HDMI_MIC;
        } else if (out_device & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET ||
                   out_device & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET) {
            snd_device = SND_DEVICE_IN_USB_HEADSET_MIC;
        } else {
            ALOGE("%s: Unknown output device(s) %#x", __func__, out_device);
            ALOGW("%s: Using default handset-mic", __func__);
            snd_device = SND_DEVICE_IN_HANDSET_MIC;
        }
    }
exit:
    ALOGV("%s: exit: in_snd_device(%s)", __func__, device_table[snd_device]);
    return snd_device;
}

int platform_set_hdmi_channels(void *platform,  int channel_count)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    struct mixer_ctl *ctl;
    const char *channel_cnt_str = NULL;
    const char *mixer_ctl_name = "HDMI_RX Channels";
    switch (channel_count) {
    case 8:
        channel_cnt_str = "Eight"; break;
    case 7:
        channel_cnt_str = "Seven"; break;
    case 6:
        channel_cnt_str = "Six"; break;
    case 5:
        channel_cnt_str = "Five"; break;
    case 4:
        channel_cnt_str = "Four"; break;
    case 3:
        channel_cnt_str = "Three"; break;
    default:
        channel_cnt_str = "Two"; break;
    }
    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, mixer_ctl_name);
        return -EINVAL;
    }
    ALOGV("HDMI channel count: %s", channel_cnt_str);
    mixer_ctl_set_enum_by_string(ctl, channel_cnt_str);
    return 0;
}

int platform_edid_get_max_channels(void *platform)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    char block[MAX_SAD_BLOCKS * SAD_BLOCK_SIZE];
    char *sad = block;
    int num_audio_blocks;
    int channel_count;
    int max_channels = 0;
    int i, ret, count;

    struct mixer_ctl *ctl;

    ctl = mixer_get_ctl_by_name(adev->mixer, AUDIO_DATA_BLOCK_MIXER_CTL);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, AUDIO_DATA_BLOCK_MIXER_CTL);
        return 0;
    }

    mixer_ctl_update(ctl);

    count = mixer_ctl_get_num_values(ctl);

    /* Read SAD blocks, clamping the maximum size for safety */
    if (count > (int)sizeof(block))
        count = (int)sizeof(block);

    ret = mixer_ctl_get_array(ctl, block, count);
    if (ret != 0) {
        ALOGE("%s: mixer_ctl_get_array() failed to get EDID info", __func__);
        return 0;
    }

    /* Calculate the number of SAD blocks */
    num_audio_blocks = count / SAD_BLOCK_SIZE;

    for (i = 0; i < num_audio_blocks; i++) {
        /* Only consider LPCM blocks */
        if ((sad[0] >> 3) != EDID_FORMAT_LPCM) {
            sad += 3;
            continue;
        }

        channel_count = (sad[0] & 0x7) + 1;
        if (channel_count > max_channels)
            max_channels = channel_count;

        /* Advance to next block */
        sad += 3;
    }

    return max_channels;
}

static int platform_set_slowtalk(struct platform_data *my_data, bool state)
{
    int ret = 0;
    struct audio_device *adev = my_data->adev;
    struct mixer_ctl *ctl;
    const char *mixer_ctl_name = "Slowtalk Enable";
    uint32_t set_values[ ] = {0,
                              ALL_SESSION_VSID};

    set_values[0] = state;
    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, mixer_ctl_name);
        ret = -EINVAL;
    } else {
        ALOGV("Setting slowtalk state: %d", state);
        ret = mixer_ctl_set_array(ctl, set_values, ARRAY_SIZE(set_values));
        my_data->slowtalk = state;
    }

    if (my_data->csd != NULL) {
        ret = my_data->csd->slow_talk(ALL_SESSION_VSID, state);
        if (ret < 0) {
            ALOGE("%s: csd_client_disable_device, failed, error %d",
                  __func__, ret);
        }
    }
    return ret;
}

int platform_set_parameters(void *platform, struct str_parms *parms)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    char *str;
    char value[256] = {0};
    int val;
    int ret = 0, err;
    char *kv_pairs = str_parms_to_str(parms);

    ALOGV_IF(kv_pairs != NULL, "%s: enter: %s", __func__, kv_pairs);

    err = str_parms_get_int(parms, AUDIO_PARAMETER_KEY_BTSCO, &val);
    if (err >= 0) {
        str_parms_del(parms, AUDIO_PARAMETER_KEY_BTSCO);
        my_data->btsco_sample_rate = val;
        if (val == SAMPLE_RATE_16KHZ) {
            audio_route_apply_path(my_data->adev->audio_route,
                                   "bt-sco-wb-samplerate");
            audio_route_update_mixer(my_data->adev->audio_route);
        }
    }

    err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_SLOWTALK, value, sizeof(value));
    if (err >= 0) {
        bool state = false;
        if (!strncmp("true", value, sizeof("true"))) {
            state = true;
        }

        str_parms_del(parms, AUDIO_PARAMETER_KEY_SLOWTALK);
        ret = platform_set_slowtalk(my_data, state);
        if (ret)
            ALOGE("%s: Failed to set slow talk err: %d", __func__, ret);
    }

    err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_VOLUME_BOOST,
                            value, sizeof(value));
    if (err >= 0) {
        str_parms_del(parms, AUDIO_PARAMETER_KEY_VOLUME_BOOST);

        if (my_data->acdb_reload_vocvoltable == NULL) {
            ALOGE("%s: acdb_reload_vocvoltable is NULL", __func__);
        } else if (!strcmp(value, "on")) {
            if (!my_data->acdb_reload_vocvoltable(VOICE_FEATURE_SET_VOLUME_BOOST)) {
                my_data->voice_feature_set = 1;
            }
        } else {
            if (!my_data->acdb_reload_vocvoltable(VOICE_FEATURE_SET_DEFAULT)) {
                my_data->voice_feature_set = 0;
            }
        }
    }

    ALOGV("%s: exit with code(%d)", __func__, ret);
    free(kv_pairs);
    return ret;
}

int platform_set_incall_recording_session_id(void *platform,
                                             uint32_t session_id, int rec_mode)
{
    int ret = 0;
    struct platform_data *my_data = (struct platform_data *)platform;
    struct audio_device *adev = my_data->adev;
    struct mixer_ctl *ctl;
    const char *mixer_ctl_name = "Voc VSID";
    int num_ctl_values;
    int i;

    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    if (!ctl) {
        ALOGE("%s: Could not get ctl for mixer cmd - %s",
              __func__, mixer_ctl_name);
        ret = -EINVAL;
    } else {
        num_ctl_values = mixer_ctl_get_num_values(ctl);
        for (i = 0; i < num_ctl_values; i++) {
            if (mixer_ctl_set_value(ctl, i, session_id)) {
                ALOGV("Error: invalid session_id: %x", session_id);
                ret = -EINVAL;
                break;
            }
        }
    }

    if (my_data->csd != NULL) {
        ret = my_data->csd->start_record(ALL_SESSION_VSID, rec_mode);
        if (ret < 0) {
            ALOGE("%s: csd_client_start_record failed, error %d",
                  __func__, ret);
        }
    }

    return ret;
}

int platform_stop_incall_recording_usecase(void *platform)
{
    int ret = 0;
    struct platform_data *my_data = (struct platform_data *)platform;

    if (my_data->csd != NULL) {
        ret = my_data->csd->stop_record(ALL_SESSION_VSID);
        if (ret < 0) {
            ALOGE("%s: csd_client_stop_record failed, error %d",
                  __func__, ret);
        }
    }

    return ret;
}

int platform_start_incall_music_usecase(void *platform)
{
    int ret = 0;
    struct platform_data *my_data = (struct platform_data *)platform;

    if (my_data->csd != NULL) {
        ret = my_data->csd->start_playback(ALL_SESSION_VSID);
        if (ret < 0) {
            ALOGE("%s: csd_client_start_playback failed, error %d",
                  __func__, ret);
        }
    }

    return ret;
}

int platform_stop_incall_music_usecase(void *platform)
{
    int ret = 0;
    struct platform_data *my_data = (struct platform_data *)platform;

    if (my_data->csd != NULL) {
        ret = my_data->csd->stop_playback(ALL_SESSION_VSID);
        if (ret < 0) {
            ALOGE("%s: csd_client_stop_playback failed, error %d",
                  __func__, ret);
        }
    }

    return ret;
}

int platform_update_lch(void *platform, struct voice_session *session,
                        enum voice_lch_mode lch_mode)
{
    int ret = 0;
    struct platform_data *my_data = (struct platform_data *)platform;

    if ((my_data->csd != NULL) && (my_data->csd->set_lch != NULL))
        ret = my_data->csd->set_lch(session->vsid, lch_mode);
    else
        ret = pcm_ioctl(session->pcm_tx, SNDRV_VOICE_IOCTL_LCH, &lch_mode);

    return ret;
}

void platform_get_parameters(void *platform,
                            struct str_parms *query,
                            struct str_parms *reply)
{
    struct platform_data *my_data = (struct platform_data *)platform;
    char *str = NULL;
    char value[256] = {0};
    int ret;
    char *kv_pairs = NULL;

    ret = str_parms_get_str(query, AUDIO_PARAMETER_KEY_SLOWTALK,
                            value, sizeof(value));
    if (ret >= 0) {
        str_parms_add_str(reply, AUDIO_PARAMETER_KEY_SLOWTALK,
                          my_data->slowtalk?"true":"false");
    }

    ret = str_parms_get_str(query, AUDIO_PARAMETER_KEY_VOLUME_BOOST,
                            value, sizeof(value));
    if (ret >= 0) {
        if (my_data->voice_feature_set == VOICE_FEATURE_SET_VOLUME_BOOST) {
            strlcpy(value, "on", sizeof(value));
        } else {
            strlcpy(value, "off", sizeof(value));
        }

        str_parms_add_str(reply, AUDIO_PARAMETER_KEY_VOLUME_BOOST, value);
    }

    kv_pairs = str_parms_to_str(reply);
    ALOGV_IF(kv_pairs != NULL, "%s: exit: returns - %s", __func__, kv_pairs);
    free(kv_pairs);
}

/* Delay in Us */
int64_t platform_render_latency(audio_usecase_t usecase)
{
    switch (usecase) {
        case USECASE_AUDIO_PLAYBACK_DEEP_BUFFER:
            return DEEP_BUFFER_PLATFORM_DELAY;
        case USECASE_AUDIO_PLAYBACK_LOW_LATENCY:
            return LOW_LATENCY_PLATFORM_DELAY;
        default:
            return 0;
    }
}

int platform_update_usecase_from_source(int source, int usecase)
{
    ALOGV("%s: input source :%d", __func__, source);
    if(source == AUDIO_SOURCE_FM_TUNER)
        usecase = USECASE_AUDIO_RECORD_FM_VIRTUAL;
    return usecase;

    switch(source) {
        case AUDIO_SOURCE_VOICE_UPLINK:
            return USECASE_INCALL_REC_UPLINK;
        case AUDIO_SOURCE_VOICE_DOWNLINK:
            return USECASE_INCALL_REC_DOWNLINK;
        case AUDIO_SOURCE_VOICE_CALL:
            return USECASE_INCALL_REC_UPLINK_AND_DOWNLINK;
        default:
            return usecase;
    }
}

bool platform_listen_update_status(snd_device_t snd_device)
{
    if ((snd_device >= SND_DEVICE_IN_BEGIN) &&
        (snd_device < SND_DEVICE_IN_END) &&
#ifdef FM_ENABLED
        (snd_device != SND_DEVICE_IN_CAPTURE_FM) &&
#endif
        (snd_device != SND_DEVICE_IN_CAPTURE_VI_FEEDBACK))
        return true;
    else
        return false;
}

/* Read  offload buffer size from a property.
 * If value is not power of 2  round it to
 * power of 2.
 */
uint32_t platform_get_compress_offload_buffer_size(audio_offload_info_t* info)
{
    char value[PROPERTY_VALUE_MAX] = {0};
    uint32_t fragment_size = COMPRESS_OFFLOAD_FRAGMENT_SIZE;
    if((property_get("audio.offload.buffer.size.kb", value, "")) &&
            atoi(value)) {
        fragment_size =  atoi(value) * 1024;
    }

    /* Use incoming offload buffer size if default buffer size is less */
    if ((info != NULL) && (fragment_size < info->offload_buffer_size)) {
        ALOGI("%s:: Overwriting offload buffer size default:%d new:%d", __func__,
              fragment_size,
              info->offload_buffer_size);
        fragment_size = info->offload_buffer_size;
    }

    // For FLAC use max size since it is loss less, and has sampling rates
    // upto 192kHZ
    if (info != NULL && !info->has_video &&
        info->format == AUDIO_FORMAT_FLAC) {
       fragment_size = MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE;
       ALOGV("FLAC fragment size %d", fragment_size);
    }

    if (info != NULL && info->has_video && info->is_streaming) {
        fragment_size = COMPRESS_OFFLOAD_FRAGMENT_SIZE_FOR_AV_STREAMING;
        ALOGV("%s: offload fragment size reduced for AV streaming to %d",
               __func__, fragment_size);
    }

    fragment_size = ALIGN( fragment_size, 1024);

    if(fragment_size < MIN_COMPRESS_OFFLOAD_FRAGMENT_SIZE)
        fragment_size = MIN_COMPRESS_OFFLOAD_FRAGMENT_SIZE;
    else if(fragment_size > MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE)
        fragment_size = MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE;
    ALOGV("%s: fragment_size %d", __func__, fragment_size);
    return fragment_size;
}

uint32_t platform_get_pcm_offload_buffer_size(audio_offload_info_t* info)
{
    uint32_t fragment_size = 0;
    uint32_t bits_per_sample = 16;
    uint32_t pcm_offload_time = PCM_OFFLOAD_BUFFER_DURATION;

    if (info->format == AUDIO_FORMAT_PCM_24_BIT_OFFLOAD) {
        bits_per_sample = 32;
    }

    //duration is set to 40 ms worth of stereo data at 48Khz
    //with 16 bit per sample, modify this when the channel
    //configuration is different
    fragment_size = (pcm_offload_time
                     * info->sample_rate
                     * (bits_per_sample >> 3)
                     * popcount(info->channel_mask))/1000;
    // To have same PCM samples for all channels, the buffer size requires to
    // be multiple of (number of channels * bytes per sample)
    // For writes to succeed, the buffer must be written at address which is multiple of 32
    // Alignment of 96 satsfies both of the above requirements
    fragment_size = ALIGN(fragment_size, 96);
    if(fragment_size < MIN_PCM_OFFLOAD_FRAGMENT_SIZE)
        fragment_size = MIN_PCM_OFFLOAD_FRAGMENT_SIZE;
    else if(fragment_size > MAX_PCM_OFFLOAD_FRAGMENT_SIZE)
        fragment_size = MAX_PCM_OFFLOAD_FRAGMENT_SIZE;

    ALOGI("PCM offload Fragment size to %d bytes", fragment_size);
    return fragment_size;
}

int platform_set_snd_device_backend(snd_device_t device, const char *backend)
{
    int ret = 0;

    if ((device < SND_DEVICE_MIN) || (device >= SND_DEVICE_MAX)) {
        ALOGE("%s: Invalid snd_device = %d",
            __func__, device);
        ret = -EINVAL;
        goto done;
    }

    if (backend_table[device]) {
        free(backend_table[device]);
    }
    backend_table[device] = strdup(backend);
done:
    return ret;
}

int platform_set_usecase_pcm_id(audio_usecase_t usecase, int32_t type, int32_t pcm_id)
{
    int ret = 0;
    if ((usecase <= USECASE_INVALID) || (usecase >= AUDIO_USECASE_MAX)) {
        ALOGE("%s: invalid usecase case idx %d", __func__, usecase);
        ret = -EINVAL;
        goto done;
    }

    if ((type != 0) && (type != 1)) {
        ALOGE("%s: invalid usecase type", __func__);
        ret = -EINVAL;
    }
    pcm_device_table[usecase][type] = pcm_id;
done:
    return ret;
}

int platform_set_snd_device_name(snd_device_t device, const char *name)
{
    int ret = 0;

    if ((device < SND_DEVICE_MIN) || (device >= SND_DEVICE_MAX)) {
        ALOGE("%s:: Invalid snd_device = %d", __func__, device);
        ret = -EINVAL;
        goto done;
    }

    device_table[device] = strdup(name);
done:
    return ret;
}

bool platform_use_small_buffer(audio_offload_info_t* info)
{
    return OFFLOAD_USE_SMALL_BUFFER;
}

int platform_set_codec_backend_cfg(struct audio_device* adev,
                         unsigned int bit_width, unsigned int sample_rate)
{
    ALOGV("%s bit width: %d, sample rate: %d", __func__, bit_width, sample_rate);

    int ret = 0;
    if (bit_width != adev->cur_codec_backend_bit_width) {
        const char * mixer_ctl_name = "SLIM_0_RX Format";
        struct  mixer_ctl *ctl;
        ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
        if (!ctl) {
            ALOGE("%s: Could not get ctl for mixer command - %s",
                    __func__, mixer_ctl_name);
            return -EINVAL;
        }

        if (bit_width == 24) {
                mixer_ctl_set_enum_by_string(ctl, "S24_LE");
        } else {
            mixer_ctl_set_enum_by_string(ctl, "S16_LE");
            sample_rate = CODEC_BACKEND_DEFAULT_SAMPLE_RATE;
        }
        adev->cur_codec_backend_bit_width = bit_width;
        ALOGE("Backend bit width is set to %d ", bit_width);
    }

    /*
     * Backend sample rate configuration follows:
     * 16 bit playback - 48khz for streams at any valid sample rate
     * 24 bit playback - 48khz for stream sample rate less than 48khz
     * 24 bit playback - 96khz for sample rate range of 48khz to 96khz
     * 24 bit playback - 192khz for sample rate range of 96khz to 192 khz
     * Upper limit is inclusive in the sample rate range.
     */
    // TODO: This has to be more dynamic based on policy file
    if (sample_rate != adev->cur_codec_backend_samplerate) {
            char *rate_str = NULL;
            const char * mixer_ctl_name = "SLIM_0_RX SampleRate";
            struct  mixer_ctl *ctl;

            switch (sample_rate) {
            case 8000:
            case 11025:
            case 16000:
            case 22050:
            case 32000:
            case 44100:
            case 48000:
                rate_str = "KHZ_48";
                break;
            case 64000:
            case 88200:
            case 96000:
                rate_str = "KHZ_96";
                break;
            case 176400:
            case 192000:
                rate_str = "KHZ_192";
                break;
            default:
                rate_str = "KHZ_48";
                break;
            }

            ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
            if(!ctl) {
                ALOGE("%s: Could not get ctl for mixer command - %s",
                    __func__, mixer_ctl_name);
                return -EINVAL;
            }

            ALOGV("Set sample rate as rate_str = %s", rate_str);
            mixer_ctl_set_enum_by_string(ctl, rate_str);
            adev->cur_codec_backend_samplerate = sample_rate;
    }

    return ret;
}

bool platform_check_codec_backend_cfg(struct audio_device* adev,
                                   struct audio_usecase* usecase __unused,
                                   unsigned int* new_bit_width,
                                   unsigned int* new_sample_rate)
{
    bool backend_change = false;
    struct listnode *node;
    struct stream_out *out = NULL;
    unsigned int bit_width = CODEC_BACKEND_DEFAULT_BIT_WIDTH;
    unsigned int sample_rate = CODEC_BACKEND_DEFAULT_SAMPLE_RATE;

    // For voice calls use default configuration
    // force routing is not required here, caller will do it anyway
    if (adev->mode == AUDIO_MODE_IN_CALL || adev->mode == AUDIO_MODE_IN_COMMUNICATION) {
        ALOGW("%s:Use default bw and sr for voice/voip calls ",__func__);
        bit_width = CODEC_BACKEND_DEFAULT_BIT_WIDTH;
        sample_rate =  CODEC_BACKEND_DEFAULT_SAMPLE_RATE;
    } else {
        /*
         * The backend should be configured at highest bit width and/or
         * sample rate amongst all playback usecases.
         * If the selected sample rate and/or bit width differ with
         * current backend sample rate and/or bit width, then, we set the
         * backend re-configuration flag.
         *
         * Exception: 16 bit playbacks is allowed through 16 bit/48 khz backend only
         */
        list_for_each(node, &adev->usecase_list) {
            struct audio_usecase *curr_usecase;
            curr_usecase = node_to_item(node, struct audio_usecase, list);
            if (curr_usecase->type == PCM_PLAYBACK) {
                struct stream_out *out =
                           (struct stream_out*) curr_usecase->stream.out;
                if (out != NULL ) {
                    ALOGV("Offload playback running bw %d sr %d",
                              out->bit_width, out->sample_rate);
                        if (bit_width < out->bit_width)
                            bit_width = out->bit_width;
                        if (sample_rate < out->sample_rate)
                            sample_rate = out->sample_rate;
                }
            }
        }
    }

    // 24 bit playback on speakers and all 16 bit playbacks is allowed through
    // 16 bit/48 khz backend only
    if ((16 == bit_width) ||
        ((24 == bit_width) &&
         (usecase->stream.out->devices & AUDIO_DEVICE_OUT_SPEAKER))) {
        sample_rate = CODEC_BACKEND_DEFAULT_SAMPLE_RATE;
    }
    // Force routing if the expected bitwdith or samplerate
    // is not same as current backend comfiguration
    if ((bit_width != adev->cur_codec_backend_bit_width) ||
        (sample_rate != adev->cur_codec_backend_samplerate)) {
        *new_bit_width = bit_width;
        *new_sample_rate = sample_rate;
        backend_change = true;
        ALOGI("%s Codec backend needs to be updated. new bit width: %d new sample rate: %d",
               __func__, *new_bit_width, *new_sample_rate);
    }

    return backend_change;
}

bool platform_check_and_set_codec_backend_cfg(struct audio_device* adev, struct audio_usecase *usecase)
{
    ALOGV("platform_check_and_set_codec_backend_cfg usecase = %d",usecase->id );

    unsigned int new_bit_width = 0, old_bit_width;
    unsigned int new_sample_rate = 0, old_sample_rate;

    new_bit_width = old_bit_width = adev->cur_codec_backend_bit_width;
    new_sample_rate = old_sample_rate = adev->cur_codec_backend_samplerate;

    ALOGW("Codec backend bitwidth %d, samplerate %d", old_bit_width, old_sample_rate);
    if (platform_check_codec_backend_cfg(adev, usecase,
                                      &new_bit_width, &new_sample_rate)) {
        platform_set_codec_backend_cfg(adev, new_bit_width, new_sample_rate);
        return true;
    }

    return false;
}