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      1 /*
      2  * Copyright (C) 2013-2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "msm8960_platform"
     18 /*#define LOG_NDEBUG 0*/
     19 #define LOG_NDDEBUG 0
     20 
     21 #include <stdlib.h>
     22 #include <dlfcn.h>
     23 #include <cutils/log.h>
     24 #include <cutils/properties.h>
     25 #include <audio_hw.h>
     26 #include <platform_api.h>
     27 #include "platform.h"
     28 
     29 #define LIB_ACDB_LOADER "libacdbloader.so"
     30 #define LIB_CSD_CLIENT "libcsd-client.so"
     31 
     32 #define DUALMIC_CONFIG_NONE 0      /* Target does not contain 2 mics */
     33 #define DUALMIC_CONFIG_ENDFIRE 1
     34 #define DUALMIC_CONFIG_BROADSIDE 2
     35 
     36 /*
     37  * This is the sysfs path for the HDMI audio data block
     38  */
     39 #define AUDIO_DATA_BLOCK_PATH "/sys/class/graphics/fb1/audio_data_block"
     40 #define MIXER_XML_PATH "/system/etc/mixer_paths.xml"
     41 
     42 /*
     43  * This file will have a maximum of 38 bytes:
     44  *
     45  * 4 bytes: number of audio blocks
     46  * 4 bytes: total length of Short Audio Descriptor (SAD) blocks
     47  * Maximum 10 * 3 bytes: SAD blocks
     48  */
     49 #define MAX_SAD_BLOCKS      10
     50 #define SAD_BLOCK_SIZE      3
     51 
     52 /* EDID format ID for LPCM audio */
     53 #define EDID_FORMAT_LPCM    1
     54 
     55 struct audio_block_header
     56 {
     57     int reserved;
     58     int length;
     59 };
     60 
     61 
     62 typedef void (*acdb_deallocate_t)();
     63 typedef int  (*acdb_init_t)();
     64 typedef void (*acdb_send_audio_cal_t)(int, int);
     65 typedef void (*acdb_send_voice_cal_t)(int, int);
     66 
     67 typedef int (*csd_client_init_t)();
     68 typedef int (*csd_client_deinit_t)();
     69 typedef int (*csd_disable_device_t)();
     70 typedef int (*csd_enable_device_t)(int, int, uint32_t);
     71 typedef int (*csd_volume_t)(int);
     72 typedef int (*csd_mic_mute_t)(int);
     73 typedef int (*csd_start_voice_t)();
     74 typedef int (*csd_stop_voice_t)();
     75 
     76 
     77 /* Audio calibration related functions */
     78 struct platform_data {
     79     struct audio_device *adev;
     80     bool fluence_in_spkr_mode;
     81     bool fluence_in_voice_call;
     82     bool fluence_in_voice_rec;
     83     int  dualmic_config;
     84     bool speaker_lr_swap;
     85 
     86     void *acdb_handle;
     87     acdb_init_t acdb_init;
     88     acdb_deallocate_t acdb_deallocate;
     89     acdb_send_audio_cal_t acdb_send_audio_cal;
     90     acdb_send_voice_cal_t acdb_send_voice_cal;
     91 
     92     /* CSD Client related functions for voice call */
     93     void *csd_client;
     94     csd_client_init_t csd_client_init;
     95     csd_client_deinit_t csd_client_deinit;
     96     csd_disable_device_t csd_disable_device;
     97     csd_enable_device_t csd_enable_device;
     98     csd_volume_t csd_volume;
     99     csd_mic_mute_t csd_mic_mute;
    100     csd_start_voice_t csd_start_voice;
    101     csd_stop_voice_t csd_stop_voice;
    102 };
    103 
    104 static const int pcm_device_table[AUDIO_USECASE_MAX][2] = {
    105     [USECASE_AUDIO_PLAYBACK_DEEP_BUFFER] = {0, 0},
    106     [USECASE_AUDIO_PLAYBACK_LOW_LATENCY] = {14, 14},
    107     [USECASE_AUDIO_PLAYBACK_MULTI_CH] = {1, 1},
    108     [USECASE_AUDIO_RECORD] = {0, 0},
    109     [USECASE_AUDIO_RECORD_LOW_LATENCY] = {14, 14},
    110     [USECASE_VOICE_CALL] = {12, 12},
    111 };
    112 
    113 /* Array to store sound devices */
    114 static const char * const device_table[SND_DEVICE_MAX] = {
    115     [SND_DEVICE_NONE] = "none",
    116     /* Playback sound devices */
    117     [SND_DEVICE_OUT_HANDSET] = "handset",
    118     [SND_DEVICE_OUT_SPEAKER] = "speaker",
    119     [SND_DEVICE_OUT_SPEAKER_REVERSE] = "speaker-reverse",
    120     [SND_DEVICE_OUT_HEADPHONES] = "headphones",
    121     [SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES] = "speaker-and-headphones",
    122     [SND_DEVICE_OUT_VOICE_SPEAKER] = "voice-speaker",
    123     [SND_DEVICE_OUT_VOICE_HEADPHONES] = "voice-headphones",
    124     [SND_DEVICE_OUT_HDMI] = "hdmi",
    125     [SND_DEVICE_OUT_SPEAKER_AND_HDMI] = "speaker-and-hdmi",
    126     [SND_DEVICE_OUT_BT_SCO] = "bt-sco-headset",
    127     [SND_DEVICE_OUT_BT_SCO_WB] = "bt-sco-headset-wb",
    128     [SND_DEVICE_OUT_VOICE_HANDSET_TMUS] = "voice-handset-tmus",
    129     [SND_DEVICE_OUT_VOICE_HANDSET] = "voice-handset-tmus",
    130     [SND_DEVICE_OUT_VOICE_HAC_HANDSET] = "voice-handset-tmus",
    131     [SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES] = "voice-tty-full-headphones",
    132     [SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES] = "voice-tty-vco-headphones",
    133     [SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET] = "voice-tty-hco-handset",
    134 
    135     /* Capture sound devices */
    136     [SND_DEVICE_IN_HANDSET_MIC] = "handset-mic",
    137     [SND_DEVICE_IN_SPEAKER_MIC] = "speaker-mic",
    138     [SND_DEVICE_IN_HEADSET_MIC] = "headset-mic",
    139     [SND_DEVICE_IN_HANDSET_MIC_AEC] = "handset-mic",
    140     [SND_DEVICE_IN_SPEAKER_MIC_AEC] = "voice-speaker-mic",
    141     [SND_DEVICE_IN_HEADSET_MIC_AEC] = "headset-mic",
    142     [SND_DEVICE_IN_VOICE_SPEAKER_MIC] = "voice-speaker-mic",
    143     [SND_DEVICE_IN_VOICE_HEADSET_MIC] = "voice-headset-mic",
    144     [SND_DEVICE_IN_HDMI_MIC] = "hdmi-mic",
    145     [SND_DEVICE_IN_BT_SCO_MIC] = "bt-sco-mic",
    146     [SND_DEVICE_IN_BT_SCO_MIC_WB] = "bt-sco-mic-wb",
    147     [SND_DEVICE_IN_CAMCORDER_MIC] = "camcorder-mic",
    148     [SND_DEVICE_IN_VOICE_DMIC_EF] = "voice-dmic-ef",
    149     [SND_DEVICE_IN_VOICE_DMIC_BS] = "voice-dmic-bs",
    150     [SND_DEVICE_IN_VOICE_DMIC_EF_TMUS] = "voice-dmic-ef-tmus",
    151     [SND_DEVICE_IN_VOICE_SPEAKER_DMIC_EF] = "voice-speaker-dmic-ef",
    152     [SND_DEVICE_IN_VOICE_SPEAKER_DMIC_BS] = "voice-speaker-dmic-bs",
    153     [SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC] = "voice-tty-full-headset-mic",
    154     [SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC] = "voice-tty-vco-handset-mic",
    155     [SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC] = "voice-tty-hco-headset-mic",
    156     [SND_DEVICE_IN_VOICE_REC_MIC] = "voice-rec-mic",
    157     [SND_DEVICE_IN_VOICE_REC_DMIC_EF] = "voice-rec-dmic-ef",
    158     [SND_DEVICE_IN_VOICE_REC_DMIC_BS] = "voice-rec-dmic-bs",
    159     [SND_DEVICE_IN_VOICE_REC_DMIC_EF_FLUENCE] = "voice-rec-dmic-ef-fluence",
    160     [SND_DEVICE_IN_VOICE_REC_DMIC_BS_FLUENCE] = "voice-rec-dmic-bs-fluence",
    161 };
    162 
    163 /* ACDB IDs (audio DSP path configuration IDs) for each sound device */
    164 static const int acdb_device_table[SND_DEVICE_MAX] = {
    165     [SND_DEVICE_NONE] = -1,
    166     [SND_DEVICE_OUT_HANDSET] = 7,
    167     [SND_DEVICE_OUT_SPEAKER] = 14,
    168     [SND_DEVICE_OUT_SPEAKER_REVERSE] = 14,
    169     [SND_DEVICE_OUT_HEADPHONES] = 10,
    170     [SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES] = 10,
    171     [SND_DEVICE_OUT_VOICE_SPEAKER] = 14,
    172     [SND_DEVICE_OUT_VOICE_HEADPHONES] = 10,
    173     [SND_DEVICE_OUT_HDMI] = 18,
    174     [SND_DEVICE_OUT_SPEAKER_AND_HDMI] = 14,
    175     [SND_DEVICE_OUT_BT_SCO] = 22,
    176     [SND_DEVICE_OUT_BT_SCO_WB] = 39,
    177     [SND_DEVICE_OUT_VOICE_HANDSET_TMUS] = 81,
    178     [SND_DEVICE_OUT_VOICE_HANDSET] = 81,
    179     [SND_DEVICE_OUT_VOICE_HAC_HANDSET] = 81,
    180     [SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES] = 17,
    181     [SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES] = 17,
    182     [SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET] = 37,
    183 
    184     [SND_DEVICE_IN_HANDSET_MIC] = 4,
    185     [SND_DEVICE_IN_SPEAKER_MIC] = 4,
    186     [SND_DEVICE_IN_HEADSET_MIC] = 8,
    187     [SND_DEVICE_IN_HANDSET_MIC_AEC] = 40,
    188     [SND_DEVICE_IN_SPEAKER_MIC_AEC] = 42,
    189     [SND_DEVICE_IN_HEADSET_MIC_AEC] = 47,
    190     [SND_DEVICE_IN_VOICE_SPEAKER_MIC] = 11,
    191     [SND_DEVICE_IN_VOICE_HEADSET_MIC] = 8,
    192     [SND_DEVICE_IN_HDMI_MIC] = 4,
    193     [SND_DEVICE_IN_BT_SCO_MIC] = 21,
    194     [SND_DEVICE_IN_BT_SCO_MIC_WB] = 38,
    195     [SND_DEVICE_IN_CAMCORDER_MIC] = 61,
    196     [SND_DEVICE_IN_VOICE_DMIC_EF] = 6,
    197     [SND_DEVICE_IN_VOICE_DMIC_BS] = 5,
    198     [SND_DEVICE_IN_VOICE_DMIC_EF_TMUS] = 91,
    199     [SND_DEVICE_IN_VOICE_SPEAKER_DMIC_EF] = 13,
    200     [SND_DEVICE_IN_VOICE_SPEAKER_DMIC_BS] = 12,
    201     [SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC] = 16,
    202     [SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC] = 36,
    203     [SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC] = 16,
    204     [SND_DEVICE_IN_VOICE_REC_MIC] = 62,
    205     /* TODO: Update with proper acdb ids */
    206     [SND_DEVICE_IN_VOICE_REC_DMIC_EF] = 62,
    207     [SND_DEVICE_IN_VOICE_REC_DMIC_BS] = 62,
    208     [SND_DEVICE_IN_VOICE_REC_DMIC_EF_FLUENCE] = 6,
    209     [SND_DEVICE_IN_VOICE_REC_DMIC_BS_FLUENCE] = 5,
    210 };
    211 
    212 #define DEEP_BUFFER_PLATFORM_DELAY (29*1000LL)
    213 #define LOW_LATENCY_PLATFORM_DELAY (13*1000LL)
    214 
    215 static pthread_once_t check_op_once_ctl = PTHREAD_ONCE_INIT;
    216 static bool is_tmus = false;
    217 
    218 static void check_operator()
    219 {
    220     char value[PROPERTY_VALUE_MAX];
    221     int mccmnc;
    222     property_get("gsm.sim.operator.numeric",value,"0");
    223     mccmnc = atoi(value);
    224     ALOGD("%s: tmus mccmnc %d", __func__, mccmnc);
    225     switch(mccmnc) {
    226     /* TMUS MCC(310), MNC(490, 260, 026) */
    227     case 310490:
    228     case 310260:
    229     case 310026:
    230         is_tmus = true;
    231         break;
    232     }
    233 }
    234 
    235 bool is_operator_tmus()
    236 {
    237     pthread_once(&check_op_once_ctl, check_operator);
    238     return is_tmus;
    239 }
    240 
    241 static int set_echo_reference(struct mixer *mixer, const char* ec_ref)
    242 {
    243     struct mixer_ctl *ctl;
    244     const char *mixer_ctl_name = "EC_REF_RX";
    245 
    246     ctl = mixer_get_ctl_by_name(mixer, mixer_ctl_name);
    247     if (!ctl) {
    248         ALOGE("%s: Could not get ctl for mixer cmd - %s",
    249               __func__, mixer_ctl_name);
    250         return -EINVAL;
    251     }
    252     ALOGV("Setting EC Reference: %s", ec_ref);
    253     mixer_ctl_set_enum_by_string(ctl, ec_ref);
    254     return 0;
    255 }
    256 
    257 void *platform_init(struct audio_device *adev)
    258 {
    259     char platform[PROPERTY_VALUE_MAX];
    260     char baseband[PROPERTY_VALUE_MAX];
    261     char value[PROPERTY_VALUE_MAX];
    262     struct platform_data *my_data;
    263 
    264     adev->mixer = mixer_open(MIXER_CARD);
    265 
    266     if (!adev->mixer) {
    267         ALOGE("Unable to open the mixer, aborting.");
    268         return NULL;
    269     }
    270 
    271     adev->audio_route = audio_route_init(MIXER_CARD, MIXER_XML_PATH);
    272     if (!adev->audio_route) {
    273         ALOGE("%s: Failed to init audio route controls, aborting.", __func__);
    274         return NULL;
    275     }
    276 
    277     my_data = calloc(1, sizeof(struct platform_data));
    278 
    279     my_data->adev = adev;
    280     my_data->dualmic_config = DUALMIC_CONFIG_NONE;
    281     my_data->fluence_in_spkr_mode = false;
    282     my_data->fluence_in_voice_call = false;
    283     my_data->fluence_in_voice_rec = false;
    284 
    285     property_get("persist.audio.dualmic.config",value,"");
    286     if (!strcmp("broadside", value)) {
    287         my_data->dualmic_config = DUALMIC_CONFIG_BROADSIDE;
    288         adev->acdb_settings |= DMIC_FLAG;
    289     } else if (!strcmp("endfire", value)) {
    290         my_data->dualmic_config = DUALMIC_CONFIG_ENDFIRE;
    291         adev->acdb_settings |= DMIC_FLAG;
    292     }
    293 
    294     if (my_data->dualmic_config != DUALMIC_CONFIG_NONE) {
    295         property_get("persist.audio.fluence.voicecall",value,"");
    296         if (!strcmp("true", value)) {
    297             my_data->fluence_in_voice_call = true;
    298         }
    299 
    300         property_get("persist.audio.fluence.voicerec",value,"");
    301         if (!strcmp("true", value)) {
    302             my_data->fluence_in_voice_rec = true;
    303         }
    304 
    305         property_get("persist.audio.fluence.speaker",value,"");
    306         if (!strcmp("true", value)) {
    307             my_data->fluence_in_spkr_mode = true;
    308         }
    309     }
    310 
    311     my_data->acdb_handle = dlopen(LIB_ACDB_LOADER, RTLD_NOW);
    312     if (my_data->acdb_handle == NULL) {
    313         ALOGE("%s: DLOPEN failed for %s", __func__, LIB_ACDB_LOADER);
    314     } else {
    315         ALOGV("%s: DLOPEN successful for %s", __func__, LIB_ACDB_LOADER);
    316         my_data->acdb_deallocate = (acdb_deallocate_t)dlsym(my_data->acdb_handle,
    317                                                     "acdb_loader_deallocate_ACDB");
    318         my_data->acdb_send_audio_cal = (acdb_send_audio_cal_t)dlsym(my_data->acdb_handle,
    319                                                     "acdb_loader_send_audio_cal");
    320         if (!my_data->acdb_send_audio_cal)
    321             ALOGW("%s: Could not find the symbol acdb_send_audio_cal from %s",
    322                   __func__, LIB_ACDB_LOADER);
    323         my_data->acdb_send_voice_cal = (acdb_send_voice_cal_t)dlsym(my_data->acdb_handle,
    324                                                     "acdb_loader_send_voice_cal");
    325         my_data->acdb_init = (acdb_init_t)dlsym(my_data->acdb_handle,
    326                                                     "acdb_loader_init_ACDB");
    327         if (my_data->acdb_init == NULL)
    328             ALOGE("%s: dlsym error %s for acdb_loader_init_ACDB", __func__, dlerror());
    329         else
    330             my_data->acdb_init();
    331     }
    332 
    333     /* If platform is Fusion3, load CSD Client specific symbols
    334      * Voice call is handled by MDM and apps processor talks to
    335      * MDM through CSD Client
    336      */
    337     property_get("ro.board.platform", platform, "");
    338     property_get("ro.baseband", baseband, "");
    339     if (!strcmp("msm8960", platform) && !strcmp("mdm", baseband)) {
    340         my_data->csd_client = dlopen(LIB_CSD_CLIENT, RTLD_NOW);
    341         if (my_data->csd_client == NULL)
    342             ALOGE("%s: DLOPEN failed for %s", __func__, LIB_CSD_CLIENT);
    343     }
    344 
    345     if (my_data->csd_client) {
    346         ALOGV("%s: DLOPEN successful for %s", __func__, LIB_CSD_CLIENT);
    347         my_data->csd_client_deinit = (csd_client_deinit_t)dlsym(my_data->csd_client,
    348                                                     "csd_client_deinit");
    349         my_data->csd_disable_device = (csd_disable_device_t)dlsym(my_data->csd_client,
    350                                                     "csd_client_disable_device");
    351         my_data->csd_enable_device = (csd_enable_device_t)dlsym(my_data->csd_client,
    352                                                     "csd_client_enable_device");
    353         my_data->csd_start_voice = (csd_start_voice_t)dlsym(my_data->csd_client,
    354                                                     "csd_client_start_voice");
    355         my_data->csd_stop_voice = (csd_stop_voice_t)dlsym(my_data->csd_client,
    356                                                     "csd_client_stop_voice");
    357         my_data->csd_volume = (csd_volume_t)dlsym(my_data->csd_client,
    358                                                     "csd_client_volume");
    359         my_data->csd_mic_mute = (csd_mic_mute_t)dlsym(my_data->csd_client,
    360                                                     "csd_client_mic_mute");
    361         my_data->csd_client_init = (csd_client_init_t)dlsym(my_data->csd_client,
    362                                                     "csd_client_init");
    363 
    364         if (my_data->csd_client_init == NULL) {
    365             ALOGE("%s: dlsym error %s for csd_client_init", __func__, dlerror());
    366         } else {
    367             my_data->csd_client_init();
    368         }
    369     }
    370 
    371     return my_data;
    372 }
    373 
    374 void platform_deinit(void *platform)
    375 {
    376     free(platform);
    377 }
    378 
    379 const char *platform_get_snd_device_name(snd_device_t snd_device)
    380 {
    381     if (snd_device >= SND_DEVICE_MIN && snd_device < SND_DEVICE_MAX)
    382         return device_table[snd_device];
    383     else
    384         return "none";
    385 }
    386 
    387 void platform_add_backend_name(void *platform __unused, char *mixer_path,
    388                                snd_device_t snd_device)
    389 {
    390     if (snd_device == SND_DEVICE_IN_BT_SCO_MIC)
    391         strcat(mixer_path, " bt-sco");
    392     else if(snd_device == SND_DEVICE_OUT_BT_SCO)
    393         strcat(mixer_path, " bt-sco");
    394     else if (snd_device == SND_DEVICE_OUT_HDMI)
    395         strcat(mixer_path, " hdmi");
    396     else if (snd_device == SND_DEVICE_OUT_SPEAKER_AND_HDMI)
    397         strcat(mixer_path, " speaker-and-hdmi");
    398     else if (snd_device == SND_DEVICE_OUT_BT_SCO_WB ||
    399              snd_device == SND_DEVICE_IN_BT_SCO_MIC_WB)
    400         strcat(mixer_path, " bt-sco-wb");
    401 }
    402 
    403 int platform_get_pcm_device_id(audio_usecase_t usecase, int device_type)
    404 {
    405     int device_id;
    406     if (device_type == PCM_PLAYBACK)
    407         device_id = pcm_device_table[usecase][0];
    408     else
    409         device_id = pcm_device_table[usecase][1];
    410     return device_id;
    411 }
    412 
    413 int platform_get_snd_device_index(char *snd_device_index_name __unused)
    414 {
    415     return -ENODEV;
    416 }
    417 
    418 int platform_set_snd_device_acdb_id(snd_device_t snd_device __unused,
    419                                     unsigned int acdb_id __unused)
    420 {
    421     return -ENODEV;
    422 }
    423 
    424 int platform_get_default_app_type_v2(void *platform, usecase_type_t type __unused,
    425                                      int *app_type __unused)
    426 {
    427     ALOGE("%s: Not implemented", __func__);
    428     return -ENOSYS;
    429 }
    430 
    431 int platform_get_snd_device_acdb_id(snd_device_t snd_device __unused)
    432 {
    433     ALOGE("%s: Not implemented", __func__);
    434     return -ENOSYS;
    435 }
    436 
    437 void platform_add_operator_specific_device(snd_device_t snd_device __unused,
    438                                            const char *operator __unused,
    439                                            const char *mixer_path __unused,
    440                                            unsigned int acdb_id __unused)
    441 {
    442 }
    443 
    444 int platform_send_audio_calibration(void *platform, snd_device_t snd_device)
    445 {
    446     struct platform_data *my_data = (struct platform_data *)platform;
    447     int acdb_dev_id, acdb_dev_type;
    448 
    449     acdb_dev_id = acdb_device_table[snd_device];
    450     if (acdb_dev_id < 0) {
    451         ALOGE("%s: Could not find acdb id for device(%d)",
    452               __func__, snd_device);
    453         return -EINVAL;
    454     }
    455     if (my_data->acdb_send_audio_cal) {
    456         ("%s: sending audio calibration for snd_device(%d) acdb_id(%d)",
    457               __func__, snd_device, acdb_dev_id);
    458         if (snd_device >= SND_DEVICE_OUT_BEGIN &&
    459                 snd_device < SND_DEVICE_OUT_END)
    460             acdb_dev_type = ACDB_DEV_TYPE_OUT;
    461         else
    462             acdb_dev_type = ACDB_DEV_TYPE_IN;
    463         my_data->acdb_send_audio_cal(acdb_dev_id, acdb_dev_type);
    464     }
    465     return 0;
    466 }
    467 
    468 int platform_switch_voice_call_device_pre(void *platform)
    469 {
    470     struct platform_data *my_data = (struct platform_data *)platform;
    471     int ret = 0;
    472 
    473     if (my_data->csd_client != NULL &&
    474         voice_is_in_call(my_data->adev)) {
    475         /* This must be called before disabling the mixer controls on APQ side */
    476         if (my_data->csd_disable_device == NULL) {
    477             ALOGE("%s: dlsym error for csd_disable_device", __func__);
    478         } else {
    479             ret = my_data->csd_disable_device();
    480             if (ret < 0) {
    481                 ALOGE("%s: csd_client_disable_device, failed, error %d",
    482                       __func__, ret);
    483             }
    484         }
    485     }
    486     return ret;
    487 }
    488 
    489 int platform_switch_voice_call_device_post(void *platform,
    490                                            snd_device_t out_snd_device,
    491                                            snd_device_t in_snd_device)
    492 {
    493     struct platform_data *my_data = (struct platform_data *)platform;
    494     int acdb_rx_id, acdb_tx_id;
    495     int ret = 0;
    496 
    497     if (my_data->csd_client) {
    498         if (my_data->csd_enable_device == NULL) {
    499             ALOGE("%s: dlsym error for csd_enable_device",
    500                   __func__);
    501         } else {
    502             acdb_rx_id = acdb_device_table[out_snd_device];
    503             acdb_tx_id = acdb_device_table[in_snd_device];
    504 
    505             if (acdb_rx_id > 0 || acdb_tx_id > 0) {
    506                 ret = my_data->csd_enable_device(acdb_rx_id, acdb_tx_id,
    507                                                     my_data->adev->acdb_settings);
    508                 if (ret < 0) {
    509                     ALOGE("%s: csd_enable_device, failed, error %d",
    510                           __func__, ret);
    511                 }
    512             } else {
    513                 ALOGE("%s: Incorrect ACDB IDs (rx: %d tx: %d)", __func__,
    514                       acdb_rx_id, acdb_tx_id);
    515             }
    516         }
    517     }
    518 
    519     return ret;
    520 }
    521 
    522 int platform_start_voice_call(void *platform, uint32_t vsid __unused)
    523 {
    524     struct platform_data *my_data = (struct platform_data *)platform;
    525     int ret = 0;
    526 
    527     if (my_data->csd_client) {
    528         if (my_data->csd_start_voice == NULL) {
    529             ALOGE("dlsym error for csd_client_start_voice");
    530             ret = -ENOSYS;
    531         } else {
    532             ret = my_data->csd_start_voice();
    533             if (ret < 0) {
    534                 ALOGE("%s: csd_start_voice error %d\n", __func__, ret);
    535             }
    536         }
    537     }
    538 
    539     return ret;
    540 }
    541 
    542 int platform_stop_voice_call(void *platform, uint32_t vsid __unused)
    543 {
    544     struct platform_data *my_data = (struct platform_data *)platform;
    545     int ret = 0;
    546 
    547     if (my_data->csd_client) {
    548         if (my_data->csd_stop_voice == NULL) {
    549             ALOGE("dlsym error for csd_stop_voice");
    550         } else {
    551             ret = my_data->csd_stop_voice();
    552             if (ret < 0) {
    553                 ALOGE("%s: csd_stop_voice error %d\n", __func__, ret);
    554             }
    555         }
    556     }
    557 
    558     return ret;
    559 }
    560 
    561 void platform_set_speaker_gain_in_combo(struct audio_device *adev __unused,
    562                                         snd_device_t snd_device  __unused,
    563                                         bool enable __unused) {
    564 }
    565 
    566 int platform_set_voice_volume(void *platform, int volume)
    567 {
    568     struct platform_data *my_data = (struct platform_data *)platform;
    569     int ret = 0;
    570 
    571     if (my_data->csd_client) {
    572         if (my_data->csd_volume == NULL) {
    573             ALOGE("%s: dlsym error for csd_volume", __func__);
    574         } else {
    575             ret = my_data->csd_volume(volume);
    576             if (ret < 0) {
    577                 ALOGE("%s: csd_volume error %d", __func__, ret);
    578             }
    579         }
    580     } else {
    581         ALOGE("%s: No CSD Client present", __func__);
    582     }
    583 
    584     return ret;
    585 }
    586 
    587 int platform_set_mic_mute(void *platform, bool state)
    588 {
    589     struct platform_data *my_data = (struct platform_data *)platform;
    590     int ret = 0;
    591 
    592     if (my_data->adev->mode == AUDIO_MODE_IN_CALL) {
    593         if (my_data->csd_client) {
    594             if (my_data->csd_mic_mute == NULL) {
    595                 ALOGE("%s: dlsym error for csd_mic_mute", __func__);
    596             } else {
    597                 ret = my_data->csd_mic_mute(state);
    598                 if (ret < 0) {
    599                     ALOGE("%s: csd_mic_mute error %d", __func__, ret);
    600                 }
    601             }
    602         } else {
    603             ALOGE("%s: No CSD Client present", __func__);
    604         }
    605     }
    606 
    607     return ret;
    608 }
    609 
    610 int platform_set_device_mute(void *platform __unused, bool state __unused, char *dir __unused)
    611 {
    612     ALOGE("%s: Not implemented", __func__);
    613     return -ENOSYS;
    614 }
    615 
    616 snd_device_t platform_get_output_snd_device(void *platform, audio_devices_t devices)
    617 {
    618     struct platform_data *my_data = (struct platform_data *)platform;
    619     struct audio_device *adev = my_data->adev;
    620     audio_mode_t mode = adev->mode;
    621     snd_device_t snd_device = SND_DEVICE_NONE;
    622 
    623     ALOGV("%s: enter: output devices(%#x)", __func__, devices);
    624     if (devices == AUDIO_DEVICE_NONE ||
    625         devices & AUDIO_DEVICE_BIT_IN) {
    626         ALOGV("%s: Invalid output devices (%#x)", __func__, devices);
    627         goto exit;
    628     }
    629 
    630     if (voice_is_in_call(adev)) {
    631         if (devices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE ||
    632             devices & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
    633             if (adev->voice.tty_mode == TTY_MODE_FULL)
    634                 snd_device = SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES;
    635             else if (adev->voice.tty_mode == TTY_MODE_VCO)
    636                 snd_device = SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES;
    637             else if (adev->voice.tty_mode == TTY_MODE_HCO)
    638                 snd_device = SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET;
    639             else
    640                 snd_device = SND_DEVICE_OUT_VOICE_HEADPHONES;
    641         } else if (devices & AUDIO_DEVICE_OUT_ALL_SCO) {
    642             if (adev->bt_wb_speech_enabled) {
    643                 snd_device = SND_DEVICE_OUT_BT_SCO_WB;
    644             } else {
    645                 snd_device = SND_DEVICE_OUT_BT_SCO;
    646             }
    647         } else if (devices & AUDIO_DEVICE_OUT_SPEAKER) {
    648             snd_device = SND_DEVICE_OUT_VOICE_SPEAKER;
    649         } else if (devices & AUDIO_DEVICE_OUT_EARPIECE) {
    650             if (is_operator_tmus())
    651                 snd_device = SND_DEVICE_OUT_VOICE_HANDSET_TMUS;
    652             else
    653                 snd_device = SND_DEVICE_OUT_HANDSET;
    654         }
    655         if (snd_device != SND_DEVICE_NONE) {
    656             goto exit;
    657         }
    658     }
    659 
    660     if (popcount(devices) == 2) {
    661         if (devices == (AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
    662                         AUDIO_DEVICE_OUT_SPEAKER)) {
    663             snd_device = SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES;
    664         } else if (devices == (AUDIO_DEVICE_OUT_WIRED_HEADSET |
    665                                AUDIO_DEVICE_OUT_SPEAKER)) {
    666             snd_device = SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES;
    667         } else if (devices == (AUDIO_DEVICE_OUT_AUX_DIGITAL |
    668                                AUDIO_DEVICE_OUT_SPEAKER)) {
    669             snd_device = SND_DEVICE_OUT_SPEAKER_AND_HDMI;
    670         } else {
    671             ALOGE("%s: Invalid combo device(%#x)", __func__, devices);
    672             goto exit;
    673         }
    674         if (snd_device != SND_DEVICE_NONE) {
    675             goto exit;
    676         }
    677     }
    678 
    679     if (popcount(devices) != 1) {
    680         ALOGE("%s: Invalid output devices(%#x)", __func__, devices);
    681         goto exit;
    682     }
    683 
    684     if (devices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE ||
    685         devices & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
    686         snd_device = SND_DEVICE_OUT_HEADPHONES;
    687     } else if (devices & AUDIO_DEVICE_OUT_SPEAKER) {
    688         if (my_data->speaker_lr_swap)
    689             snd_device = SND_DEVICE_OUT_SPEAKER_REVERSE;
    690         else
    691             snd_device = SND_DEVICE_OUT_SPEAKER;
    692     } else if (devices & AUDIO_DEVICE_OUT_ALL_SCO) {
    693         if (adev->bt_wb_speech_enabled) {
    694             snd_device = SND_DEVICE_OUT_BT_SCO_WB;
    695         } else {
    696             snd_device = SND_DEVICE_OUT_BT_SCO;
    697         }
    698     } else if (devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
    699         snd_device = SND_DEVICE_OUT_HDMI ;
    700     } else if (devices & AUDIO_DEVICE_OUT_EARPIECE) {
    701         snd_device = SND_DEVICE_OUT_HANDSET;
    702     } else {
    703         ALOGE("%s: Unknown device(s) %#x", __func__, devices);
    704     }
    705 exit:
    706     ALOGV("%s: exit: snd_device(%s)", __func__, device_table[snd_device]);
    707     return snd_device;
    708 }
    709 
    710 snd_device_t platform_get_input_snd_device(void *platform, audio_devices_t out_device)
    711 {
    712     struct platform_data *my_data = (struct platform_data *)platform;
    713     struct audio_device *adev = my_data->adev;
    714     audio_source_t  source = (adev->active_input == NULL) ?
    715                                 AUDIO_SOURCE_DEFAULT : adev->active_input->source;
    716 
    717     audio_mode_t    mode   = adev->mode;
    718     audio_devices_t in_device = ((adev->active_input == NULL) ?
    719                                     AUDIO_DEVICE_NONE : adev->active_input->device)
    720                                 & ~AUDIO_DEVICE_BIT_IN;
    721     audio_channel_mask_t channel_mask = (adev->active_input == NULL) ?
    722                                 AUDIO_CHANNEL_IN_MONO : adev->active_input->channel_mask;
    723     snd_device_t snd_device = SND_DEVICE_NONE;
    724 
    725     ALOGV("%s: enter: out_device(%#x) in_device(%#x)",
    726           __func__, out_device, in_device);
    727     if ((out_device != AUDIO_DEVICE_NONE) && voice_is_in_call(adev)) {
    728         if (adev->voice.tty_mode != TTY_MODE_OFF) {
    729             if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE ||
    730                 out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
    731                 switch (adev->voice.tty_mode) {
    732                 case TTY_MODE_FULL:
    733                     snd_device = SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC;
    734                     break;
    735                 case TTY_MODE_VCO:
    736                     snd_device = SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC;
    737                     break;
    738                 case TTY_MODE_HCO:
    739                     snd_device = SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC;
    740                     break;
    741                 default:
    742                     ALOGE("%s: Invalid TTY mode (%#x)", __func__, adev->voice.tty_mode);
    743                 }
    744                 goto exit;
    745             }
    746         }
    747         if (out_device & AUDIO_DEVICE_OUT_EARPIECE ||
    748             out_device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE) {
    749             if (my_data->fluence_in_voice_call == false) {
    750                 snd_device = SND_DEVICE_IN_HANDSET_MIC;
    751             } else {
    752                 if (my_data->dualmic_config == DUALMIC_CONFIG_ENDFIRE) {
    753                     if (is_operator_tmus())
    754                         snd_device = SND_DEVICE_IN_VOICE_DMIC_EF_TMUS;
    755                     else
    756                         snd_device = SND_DEVICE_IN_VOICE_DMIC_EF;
    757                 } else if(my_data->dualmic_config == DUALMIC_CONFIG_BROADSIDE)
    758                     snd_device = SND_DEVICE_IN_VOICE_DMIC_BS;
    759                 else
    760                     snd_device = SND_DEVICE_IN_HANDSET_MIC;
    761             }
    762         } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
    763             snd_device = SND_DEVICE_IN_VOICE_HEADSET_MIC;
    764         } else if (out_device & AUDIO_DEVICE_OUT_ALL_SCO) {
    765             if (adev->bt_wb_speech_enabled) {
    766                 snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
    767             } else {
    768                 snd_device = SND_DEVICE_IN_BT_SCO_MIC;
    769             }
    770         } else if (out_device & AUDIO_DEVICE_OUT_SPEAKER) {
    771             if (my_data->fluence_in_voice_call && my_data->fluence_in_spkr_mode &&
    772                     my_data->dualmic_config == DUALMIC_CONFIG_ENDFIRE) {
    773                 snd_device = SND_DEVICE_IN_VOICE_SPEAKER_DMIC_EF;
    774             } else if (my_data->fluence_in_voice_call && my_data->fluence_in_spkr_mode &&
    775                     my_data->dualmic_config == DUALMIC_CONFIG_BROADSIDE) {
    776                 snd_device = SND_DEVICE_IN_VOICE_SPEAKER_DMIC_BS;
    777             } else {
    778                 snd_device = SND_DEVICE_IN_VOICE_SPEAKER_MIC;
    779             }
    780         }
    781     } else if (source == AUDIO_SOURCE_CAMCORDER) {
    782         if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC ||
    783             in_device & AUDIO_DEVICE_IN_BACK_MIC) {
    784             snd_device = SND_DEVICE_IN_CAMCORDER_MIC;
    785         }
    786     } else if (source == AUDIO_SOURCE_VOICE_RECOGNITION) {
    787         if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
    788             if (my_data->dualmic_config == DUALMIC_CONFIG_ENDFIRE) {
    789                 if (channel_mask == AUDIO_CHANNEL_IN_FRONT_BACK)
    790                     snd_device = SND_DEVICE_IN_VOICE_REC_DMIC_EF;
    791                 else if (my_data->fluence_in_voice_rec)
    792                     snd_device = SND_DEVICE_IN_VOICE_REC_DMIC_EF_FLUENCE;
    793             } else if (my_data->dualmic_config == DUALMIC_CONFIG_BROADSIDE) {
    794                 if (channel_mask == AUDIO_CHANNEL_IN_FRONT_BACK)
    795                     snd_device = SND_DEVICE_IN_VOICE_REC_DMIC_BS;
    796                 else if (my_data->fluence_in_voice_rec)
    797                     snd_device = SND_DEVICE_IN_VOICE_REC_DMIC_BS_FLUENCE;
    798             }
    799 
    800             if (snd_device == SND_DEVICE_NONE) {
    801                 snd_device = SND_DEVICE_IN_VOICE_REC_MIC;
    802             }
    803         }
    804     } else if (source == AUDIO_SOURCE_VOICE_COMMUNICATION ||
    805             mode == AUDIO_MODE_IN_COMMUNICATION) {
    806         if (out_device & AUDIO_DEVICE_OUT_SPEAKER)
    807             in_device = AUDIO_DEVICE_IN_BACK_MIC;
    808         if (adev->active_input) {
    809             if (adev->active_input->enable_aec) {
    810                 if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
    811                     snd_device = SND_DEVICE_IN_SPEAKER_MIC_AEC;
    812                 } else if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
    813                     snd_device = SND_DEVICE_IN_HANDSET_MIC_AEC;
    814                 } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
    815                     snd_device = SND_DEVICE_IN_HEADSET_MIC_AEC;
    816                 }
    817                 set_echo_reference(adev->mixer, "SLIM_RX");
    818             } else
    819                 set_echo_reference(adev->mixer, "NONE");
    820         }
    821     } else if (source == AUDIO_SOURCE_DEFAULT) {
    822         goto exit;
    823     }
    824 
    825 
    826     if (snd_device != SND_DEVICE_NONE) {
    827         goto exit;
    828     }
    829 
    830     if (in_device != AUDIO_DEVICE_NONE &&
    831             !(in_device & AUDIO_DEVICE_IN_VOICE_CALL) &&
    832             !(in_device & AUDIO_DEVICE_IN_COMMUNICATION)) {
    833         if (in_device & AUDIO_DEVICE_IN_BUILTIN_MIC) {
    834             snd_device = SND_DEVICE_IN_HANDSET_MIC;
    835         } else if (in_device & AUDIO_DEVICE_IN_BACK_MIC) {
    836             snd_device = SND_DEVICE_IN_SPEAKER_MIC;
    837         } else if (in_device & AUDIO_DEVICE_IN_WIRED_HEADSET) {
    838             snd_device = SND_DEVICE_IN_HEADSET_MIC;
    839         } else if (in_device & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
    840             if (adev->bt_wb_speech_enabled) {
    841                 snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
    842             } else {
    843                 snd_device = SND_DEVICE_IN_BT_SCO_MIC;
    844             }
    845         } else if (in_device & AUDIO_DEVICE_IN_AUX_DIGITAL) {
    846             snd_device = SND_DEVICE_IN_HDMI_MIC;
    847         } else {
    848             ALOGE("%s: Unknown input device(s) %#x", __func__, in_device);
    849             ALOGW("%s: Using default handset-mic", __func__);
    850             snd_device = SND_DEVICE_IN_HANDSET_MIC;
    851         }
    852     } else {
    853         if (out_device & AUDIO_DEVICE_OUT_EARPIECE) {
    854             snd_device = SND_DEVICE_IN_HANDSET_MIC;
    855         } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
    856             snd_device = SND_DEVICE_IN_HEADSET_MIC;
    857         } else if (out_device & AUDIO_DEVICE_OUT_SPEAKER) {
    858             snd_device = SND_DEVICE_IN_SPEAKER_MIC;
    859         } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE) {
    860             snd_device = SND_DEVICE_IN_HANDSET_MIC;
    861         } else if (out_device & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET) {
    862             if (adev->bt_wb_speech_enabled) {
    863                 snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
    864             } else {
    865                 snd_device = SND_DEVICE_IN_BT_SCO_MIC;
    866             }
    867         } else if (out_device & AUDIO_DEVICE_OUT_AUX_DIGITAL) {
    868             snd_device = SND_DEVICE_IN_HDMI_MIC;
    869         } else {
    870             ALOGE("%s: Unknown output device(s) %#x", __func__, out_device);
    871             ALOGW("%s: Using default handset-mic", __func__);
    872             snd_device = SND_DEVICE_IN_HANDSET_MIC;
    873         }
    874     }
    875 exit:
    876     ALOGV("%s: exit: in_snd_device(%s)", __func__, device_table[snd_device]);
    877     return snd_device;
    878 }
    879 
    880 int platform_set_hdmi_channels(void *platform,  int channel_count)
    881 {
    882     struct platform_data *my_data = (struct platform_data *)platform;
    883     struct audio_device *adev = my_data->adev;
    884     struct mixer_ctl *ctl;
    885     const char *channel_cnt_str = NULL;
    886     const char *mixer_ctl_name = "HDMI_RX Channels";
    887     switch (channel_count) {
    888     case 8:
    889         channel_cnt_str = "Eight"; break;
    890     case 7:
    891         channel_cnt_str = "Seven"; break;
    892     case 6:
    893         channel_cnt_str = "Six"; break;
    894     case 5:
    895         channel_cnt_str = "Five"; break;
    896     case 4:
    897         channel_cnt_str = "Four"; break;
    898     case 3:
    899         channel_cnt_str = "Three"; break;
    900     default:
    901         channel_cnt_str = "Two"; break;
    902     }
    903     ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
    904     if (!ctl) {
    905         ALOGE("%s: Could not get ctl for mixer cmd - %s",
    906               __func__, mixer_ctl_name);
    907         return -EINVAL;
    908     }
    909     ALOGV("HDMI channel count: %s", channel_cnt_str);
    910     mixer_ctl_set_enum_by_string(ctl, channel_cnt_str);
    911     return 0;
    912 }
    913 
    914 int platform_edid_get_max_channels(void *platform __unused)
    915 {
    916     FILE *file;
    917     struct audio_block_header header;
    918     char block[MAX_SAD_BLOCKS * SAD_BLOCK_SIZE];
    919     char *sad = block;
    920     int num_audio_blocks;
    921     int channel_count;
    922     int max_channels = 0;
    923     int i;
    924 
    925     file = fopen(AUDIO_DATA_BLOCK_PATH, "rb");
    926     if (file == NULL) {
    927         ALOGE("Unable to open '%s'", AUDIO_DATA_BLOCK_PATH);
    928         return 0;
    929     }
    930 
    931     /* Read audio block header */
    932     fread(&header, 1, sizeof(header), file);
    933 
    934     /* Read SAD blocks, clamping the maximum size for safety */
    935     if (header.length > (int)sizeof(block))
    936         header.length = (int)sizeof(block);
    937     fread(&block, header.length, 1, file);
    938 
    939     fclose(file);
    940 
    941     /* Calculate the number of SAD blocks */
    942     num_audio_blocks = header.length / SAD_BLOCK_SIZE;
    943 
    944     for (i = 0; i < num_audio_blocks; i++) {
    945         /* Only consider LPCM blocks */
    946         if ((sad[0] >> 3) != EDID_FORMAT_LPCM)
    947             continue;
    948 
    949         channel_count = (sad[0] & 0x7) + 1;
    950         if (channel_count > max_channels)
    951             max_channels = channel_count;
    952 
    953         /* Advance to next block */
    954         sad += 3;
    955     }
    956 
    957     return max_channels;
    958 }
    959 
    960 int platform_set_incall_recording_session_id(void *platform __unused,
    961                                              uint32_t session_id __unused, int rec_mode __unused)
    962 {
    963     ALOGE("%s: Not implemented", __func__);
    964     return -ENOSYS;
    965 }
    966 
    967 int platform_stop_incall_recording_usecase(void *platform __unused)
    968 {
    969     ALOGE("%s: Not implemented", __func__);
    970     return -ENOSYS;
    971 }
    972 
    973 int platform_start_incall_music_usecase(void *platform __unused)
    974 {
    975     ALOGE("%s: Not implemented", __func__);
    976     return -ENOSYS;
    977 }
    978 
    979 int platform_stop_incall_music_usecase(void *platform __unused)
    980 {
    981     ALOGE("%s: Not implemented", __func__);
    982     return -ENOSYS;
    983 }
    984 
    985 int platform_set_parameters(void *platform __unused,
    986                             struct str_parms *parms __unused)
    987 {
    988     ALOGE("%s: Not implemented", __func__);
    989     return -ENOSYS;
    990 }
    991 
    992 /* Delay in Us */
    993 int64_t platform_render_latency(audio_usecase_t usecase)
    994 {
    995     switch (usecase) {
    996         case USECASE_AUDIO_PLAYBACK_DEEP_BUFFER:
    997             return DEEP_BUFFER_PLATFORM_DELAY;
    998         case USECASE_AUDIO_PLAYBACK_LOW_LATENCY:
    999             return LOW_LATENCY_PLATFORM_DELAY;
   1000         default:
   1001             return 0;
   1002     }
   1003 }
   1004 
   1005 int platform_switch_voice_call_enable_device_config(void *platform __unused,
   1006                                                     snd_device_t out_snd_device __unused,
   1007                                                     snd_device_t in_snd_device __unused)
   1008 {
   1009     return 0;
   1010 }
   1011 
   1012 int platform_switch_voice_call_usecase_route_post(void *platform __unused,
   1013                                                   snd_device_t out_snd_device __unused,
   1014                                                   snd_device_t in_snd_device __unused)
   1015 {
   1016     return 0;
   1017 }
   1018 
   1019 int platform_get_sample_rate(void *platform __unused, uint32_t *rate __unused)
   1020 {
   1021     return -ENOSYS;
   1022 }
   1023 
   1024 int platform_get_usecase_index(const char * usecase __unused)
   1025 {
   1026     return -ENOSYS;
   1027 }
   1028 
   1029 int platform_set_usecase_pcm_id(audio_usecase_t usecase __unused, int32_t type __unused,
   1030                                 int32_t pcm_id __unused)
   1031 {
   1032     return -ENOSYS;
   1033 }
   1034 
   1035 int platform_set_snd_device_backend(snd_device_t device __unused,
   1036                                     const char *backend __unused,
   1037                                     const char *hw_interface __unused)
   1038 {
   1039     return -ENOSYS;
   1040 }
   1041 
   1042 void platform_set_echo_reference(struct audio_device *adev __unused,
   1043                                  bool enable __unused,
   1044                                  audio_devices_t out_device __unused)
   1045 {
   1046     return;
   1047 }
   1048 
   1049 int platform_swap_lr_channels(struct audio_device *adev, bool swap_channels)
   1050 {
   1051     // only update the selected device if there is active pcm playback
   1052     struct audio_usecase *usecase;
   1053     struct listnode *node;
   1054     struct platform_data *my_data = (struct platform_data *)adev->platform;
   1055     int status = 0;
   1056 
   1057     if (my_data->speaker_lr_swap != swap_channels) {
   1058         my_data->speaker_lr_swap = swap_channels;
   1059 
   1060         list_for_each(node, &adev->usecase_list) {
   1061             usecase = node_to_item(node, struct audio_usecase, list);
   1062             if (usecase->type == PCM_PLAYBACK &&
   1063                 usecase->stream.out->devices & AUDIO_DEVICE_OUT_SPEAKER) {
   1064                 const char *mixer_path;
   1065                 if (swap_channels) {
   1066                     mixer_path = platform_get_snd_device_name(SND_DEVICE_OUT_SPEAKER_REVERSE);
   1067                     audio_route_apply_and_update_path(adev->audio_route, mixer_path);
   1068                 } else {
   1069                     mixer_path = platform_get_snd_device_name(SND_DEVICE_OUT_SPEAKER);
   1070                     audio_route_apply_and_update_path(adev->audio_route, mixer_path);
   1071                 }
   1072                 break;
   1073             }
   1074         }
   1075     }
   1076     return status;
   1077 }
   1078 
   1079 bool platform_send_gain_dep_cal(void *platform __unused,
   1080                                 int level __unused)
   1081 {
   1082     return true;
   1083 }
   1084 
   1085 int platform_can_split_snd_device(snd_device_t in_snd_device __unused,
   1086                                    int *num_devices __unused,
   1087                                    snd_device_t *out_snd_devices __unused)
   1088 {
   1089     return -ENOSYS;
   1090 }
   1091 
   1092 bool platform_check_backends_match(snd_device_t snd_device1 __unused,
   1093                                    snd_device_t snd_device2 __unused)
   1094 {
   1095     return true;
   1096 }
   1097 
   1098 int platform_get_snd_device_name_extn(void *platform __unused,
   1099                                       snd_device_t snd_device,
   1100                                       char *device_name)
   1101 {
   1102     strlcpy(device_name, platform_get_snd_device_name(snd_device),
   1103             DEVICE_NAME_MAX_SIZE);
   1104     return 0;
   1105 }
   1106 
   1107 bool platform_check_and_set_playback_backend_cfg(struct audio_device* adev __unused,
   1108                                               struct audio_usecase *usecase __unused,
   1109                                               snd_device_t snd_device __unused)
   1110 {
   1111     return false;
   1112 }
   1113 
   1114 bool platform_check_and_set_capture_backend_cfg(struct audio_device* adev __unused,
   1115                                               struct audio_usecase *usecase __unused)
   1116 {
   1117     return false;
   1118 }
   1119 
   1120 bool platform_add_gain_level_mapping(struct amp_db_and_gain_table *tbl_entry __unused)
   1121 {
   1122     return false;
   1123 }
   1124 
   1125 int platform_get_gain_level_mapping(struct amp_db_and_gain_table *mapping_tbl __unused,
   1126                                     int table_size __unused)
   1127 {
   1128     return 0;
   1129 }
   1130 
   1131 int platform_snd_card_update(void *platform __unused,
   1132                              card_status_t status __unused)
   1133 {
   1134     return -1;
   1135 }
   1136