sound/soc/intel/boards/skl_nau88l25_max98357a.c

   1 /*
   2  * Intel Skylake I2S Machine Driver with MAXIM98357A
   3  * and NAU88L25
   4  *
   5  * Copyright (C) 2015, Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License version
   9  * 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/platform_device.h>
  19 #include <sound/core.h>
  20 #include <sound/jack.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/soc.h>
  24 #include "../../codecs/nau8825.h"
  25 #include "../../codecs/hdac_hdmi.h"
  26
  27 #define SKL_NUVOTON_CODEC_DAI   "nau8825-hifi"
  28 #define SKL_MAXIM_CODEC_DAI "HiFi"
  29
  30 static struct snd_soc_jack skylake_headset;
  31 static struct snd_soc_card skylake_audio_card;
  32
  33 enum {
  34         SKL_DPCM_AUDIO_PB = 0,
  35         SKL_DPCM_AUDIO_CP,
  36         SKL_DPCM_AUDIO_REF_CP,
  37         SKL_DPCM_AUDIO_DMIC_CP,
  38         SKL_DPCM_AUDIO_HDMI1_PB,
  39         SKL_DPCM_AUDIO_HDMI2_PB,
  40         SKL_DPCM_AUDIO_HDMI3_PB,
  41 };
  42
  43 static inline struct snd_soc_dai *skl_get_codec_dai(struct snd_soc_card *card)
  44 {
  45         struct snd_soc_pcm_runtime *rtd;
  46
  47         list_for_each_entry(rtd, &card->rtd_list, list) {
  48
  49                 if (!strncmp(rtd->codec_dai->name, SKL_NUVOTON_CODEC_DAI,
  50                              strlen(SKL_NUVOTON_CODEC_DAI)))
  51                         return rtd->codec_dai;
  52         }
  53
  54         return NULL;
  55 }
  56
  57 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  58         struct snd_kcontrol *k, int  event)
  59 {
  60         struct snd_soc_dapm_context *dapm = w->dapm;
  61         struct snd_soc_card *card = dapm->card;
  62         struct snd_soc_dai *codec_dai;
  63         int ret;
  64
  65         codec_dai = skl_get_codec_dai(card);
  66         if (!codec_dai) {
  67                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  68                 return -EIO;
  69         }
  70
  71         if (SND_SOC_DAPM_EVENT_ON(event)) {
  72                 ret = snd_soc_dai_set_sysclk(codec_dai,
  73                                 NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN);
  74                 if (ret < 0) {
  75                         dev_err(card->dev, "set sysclk err = %d\n", ret);
  76                         return -EIO;
  77                 }
  78         } else {
  79                 ret = snd_soc_dai_set_sysclk(codec_dai,
  80                                 NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN);
  81                 if (ret < 0) {
  82                         dev_err(card->dev, "set sysclk err = %d\n", ret);
  83                         return -EIO;
  84                 }
  85         }
  86
  87         return ret;
  88 }
  89
  90 static const struct snd_kcontrol_new skylake_controls[] = {
  91         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
  92         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  93         SOC_DAPM_PIN_SWITCH("Spk"),
  94 };
  95
  96 static const struct snd_soc_dapm_widget skylake_widgets[] = {
  97         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  98         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  99         SND_SOC_DAPM_SPK("Spk", NULL),
 100         SND_SOC_DAPM_MIC("SoC DMIC", NULL),
 101         SND_SOC_DAPM_SPK("DP", NULL),
 102         SND_SOC_DAPM_SPK("HDMI", NULL),
 103         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 104                         platform_clock_control, SND_SOC_DAPM_PRE_PMU |
 105                         SND_SOC_DAPM_POST_PMD),
 106 };
 107
 108 static const struct snd_soc_dapm_route skylake_map[] = {
 109         /* HP jack connectors - unknown if we have jack detection */
 110         { "Headphone Jack", NULL, "HPOL" },
 111         { "Headphone Jack", NULL, "HPOR" },
 112
 113         /* speaker */
 114         { "Spk", NULL, "Speaker" },
 115
 116         /* other jacks */
 117         { "MIC", NULL, "Headset Mic" },
 118         { "DMic", NULL, "SoC DMIC" },
 119
 120         {"HDMI", NULL, "hif5 Output"},
 121         {"DP", NULL, "hif6 Output"},
 122
 123         /* CODEC BE connections */
 124         { "HiFi Playback", NULL, "ssp0 Tx" },
 125         { "ssp0 Tx", NULL, "codec0_out" },
 126
 127         { "Playback", NULL, "ssp1 Tx" },
 128         { "ssp1 Tx", NULL, "codec1_out" },
 129
 130         { "codec0_in", NULL, "ssp1 Rx" },
 131         { "ssp1 Rx", NULL, "Capture" },
 132
 133         /* DMIC */
 134         { "dmic01_hifi", NULL, "DMIC01 Rx" },
 135         { "DMIC01 Rx", NULL, "DMIC AIF" },
 136
 137         { "hifi3", NULL, "iDisp3 Tx"},
 138         { "iDisp3 Tx", NULL, "iDisp3_out"},
 139         { "hifi2", NULL, "iDisp2 Tx"},
 140         { "iDisp2 Tx", NULL, "iDisp2_out"},
 141         { "hifi1", NULL, "iDisp1 Tx"},
 142         { "iDisp1 Tx", NULL, "iDisp1_out"},
 143
 144         { "Headphone Jack", NULL, "Platform Clock" },
 145         { "Headset Mic", NULL, "Platform Clock" },
 146 };
 147
 148 static int skylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
 149         struct snd_pcm_hw_params *params)
 150 {
 151         struct snd_interval *rate = hw_param_interval(params,
 152                         SNDRV_PCM_HW_PARAM_RATE);
 153         struct snd_interval *channels = hw_param_interval(params,
 154                         SNDRV_PCM_HW_PARAM_CHANNELS);
 155         struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 156
 157         /* The ADSP will covert the FE rate to 48k, stereo */
 158         rate->min = rate->max = 48000;
 159         channels->min = channels->max = 2;
 160
 161         /* set SSP0 to 24 bit */
 162         snd_mask_none(fmt);
 163         snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE);
 164
 165         return 0;
 166 }
 167
 168 static int skylake_nau8825_codec_init(struct snd_soc_pcm_runtime *rtd)
 169 {
 170         int ret;
 171         struct snd_soc_codec *codec = rtd->codec;
 172
 173         /*
 174          * Headset buttons map to the google Reference headset.
 175          * These can be configured by userspace.
 176          */
 177         ret = snd_soc_card_jack_new(&skylake_audio_card, "Headset Jack",
 178                         SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 179                         SND_JACK_BTN_2 | SND_JACK_BTN_3, &skylake_headset,
 180                         NULL, 0);
 181         if (ret) {
 182                 dev_err(rtd->dev, "Headset Jack creation failed %d\n", ret);
 183                 return ret;
 184         }
 185
 186         nau8825_enable_jack_detect(codec, &skylake_headset);
 187
 188         snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC");
 189
 190         return ret;
 191 }
 192
 193 static int skylake_hdmi1_init(struct snd_soc_pcm_runtime *rtd)
 194 {
 195         struct snd_soc_dai *dai = rtd->codec_dai;
 196
 197         return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI1_PB);
 198 }
 199
 200 static int skylake_hdmi2_init(struct snd_soc_pcm_runtime *rtd)
 201 {
 202         struct snd_soc_dai *dai = rtd->codec_dai;
 203
 204         return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI2_PB);
 205 }
 206
 207 static int skylake_hdmi3_init(struct snd_soc_pcm_runtime *rtd)
 208 {
 209         struct snd_soc_dai *dai = rtd->codec_dai;
 210
 211         return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI3_PB);
 212 }
 213
 214 static int skylake_nau8825_fe_init(struct snd_soc_pcm_runtime *rtd)
 215 {
 216         struct snd_soc_dapm_context *dapm;
 217         struct snd_soc_component *component = rtd->cpu_dai->component;
 218
 219         dapm = snd_soc_component_get_dapm(component);
 220         snd_soc_dapm_ignore_suspend(dapm, "Reference Capture");
 221
 222         return 0;
 223 }
 224
 225 static unsigned int rates[] = {
 226         48000,
 227 };
 228
 229 static struct snd_pcm_hw_constraint_list constraints_rates = {
 230         .count = ARRAY_SIZE(rates),
 231         .list  = rates,
 232         .mask = 0,
 233 };
 234
 235 static unsigned int channels[] = {
 236         2,
 237 };
 238
 239 static struct snd_pcm_hw_constraint_list constraints_channels = {
 240         .count = ARRAY_SIZE(channels),
 241         .list = channels,
 242         .mask = 0,
 243 };
 244
 245 static int skl_fe_startup(struct snd_pcm_substream *substream)
 246 {
 247         struct snd_pcm_runtime *runtime = substream->runtime;
 248
 249         /*
 250          * On this platform for PCM device we support,
 251          * 48Khz
 252          * stereo
 253          * 16 bit audio
 254          */
 255
 256         runtime->hw.channels_max = 2;
 257         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 258                                            &constraints_channels);
 259
 260         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
 261         snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
 262
 263         snd_pcm_hw_constraint_list(runtime, 0,
 264                                 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 265
 266         return 0;
 267 }
 268
 269 static const struct snd_soc_ops skylake_nau8825_fe_ops = {
 270         .startup = skl_fe_startup,
 271 };
 272
 273 static int skylake_nau8825_hw_params(struct snd_pcm_substream *substream,
 274         struct snd_pcm_hw_params *params)
 275 {
 276         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 277         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 278         int ret;
 279
 280         ret = snd_soc_dai_set_sysclk(codec_dai,
 281                         NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN);
 282
 283         if (ret < 0)
 284                 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret);
 285
 286         return ret;
 287 }
 288
 289 static struct snd_soc_ops skylake_nau8825_ops = {
 290         .hw_params = skylake_nau8825_hw_params,
 291 };
 292
 293 static int skylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
 294                 struct snd_pcm_hw_params *params)
 295 {
 296         struct snd_interval *channels = hw_param_interval(params,
 297                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 298
 299         if (params_channels(params) == 2)
 300                 channels->min = channels->max = 2;
 301         else
 302                 channels->min = channels->max = 4;
 303
 304         return 0;
 305 }
 306
 307 static unsigned int channels_dmic[] = {
 308         2, 4,
 309 };
 310
 311 static struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
 312         .count = ARRAY_SIZE(channels_dmic),
 313         .list = channels_dmic,
 314         .mask = 0,
 315 };
 316
 317 static int skylake_dmic_startup(struct snd_pcm_substream *substream)
 318 {
 319         struct snd_pcm_runtime *runtime = substream->runtime;
 320
 321         runtime->hw.channels_max = 4;
 322         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 323                         &constraints_dmic_channels);
 324
 325         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 326                         SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 327 }
 328
 329 static struct snd_soc_ops skylake_dmic_ops = {
 330         .startup = skylake_dmic_startup,
 331 };
 332
 333 static unsigned int rates_16000[] = {
 334         16000,
 335 };
 336
 337 static struct snd_pcm_hw_constraint_list constraints_16000 = {
 338         .count = ARRAY_SIZE(rates_16000),
 339         .list  = rates_16000,
 340 };
 341
 342 static int skylake_refcap_startup(struct snd_pcm_substream *substream)
 343 {
 344         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 345                                 SNDRV_PCM_HW_PARAM_RATE,
 346                                 &constraints_16000);
 347 }
 348
 349 static struct snd_soc_ops skylaye_refcap_ops = {
 350         .startup = skylake_refcap_startup,
 351 };
 352
 353 /* skylake digital audio interface glue - connects codec <--> CPU */
 354 static struct snd_soc_dai_link skylake_dais[] = {
 355         /* Front End DAI links */
 356         [SKL_DPCM_AUDIO_PB] = {
 357                 .name = "Skl Audio Port",
 358                 .stream_name = "Audio",
 359                 .cpu_dai_name = "System Pin",
 360                 .platform_name = "0000:00:1f.3",
 361                 .dynamic = 1,
 362                 .codec_name = "snd-soc-dummy",
 363                 .codec_dai_name = "snd-soc-dummy-dai",
 364                 .nonatomic = 1,
 365                 .init = skylake_nau8825_fe_init,
 366                 .trigger = {
 367                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 368                 .dpcm_playback = 1,
 369                 .ops = &skylake_nau8825_fe_ops,
 370         },
 371         [SKL_DPCM_AUDIO_CP] = {
 372                 .name = "Skl Audio Capture Port",
 373                 .stream_name = "Audio Record",
 374                 .cpu_dai_name = "System Pin",
 375                 .platform_name = "0000:00:1f.3",
 376                 .dynamic = 1,
 377                 .codec_name = "snd-soc-dummy",
 378                 .codec_dai_name = "snd-soc-dummy-dai",
 379                 .nonatomic = 1,
 380                 .trigger = {
 381                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 382                 .dpcm_capture = 1,
 383                 .ops = &skylake_nau8825_fe_ops,
 384         },
 385         [SKL_DPCM_AUDIO_REF_CP] = {
 386                 .name = "Skl Audio Reference cap",
 387                 .stream_name = "Wake on Voice",
 388                 .cpu_dai_name = "Reference Pin",
 389                 .codec_name = "snd-soc-dummy",
 390                 .codec_dai_name = "snd-soc-dummy-dai",
 391                 .platform_name = "0000:00:1f.3",
 392                 .init = NULL,
 393                 .dpcm_capture = 1,
 394                 .ignore_suspend = 1,
 395                 .nonatomic = 1,
 396                 .dynamic = 1,
 397                 .ops = &skylaye_refcap_ops,
 398         },
 399         [SKL_DPCM_AUDIO_DMIC_CP] = {
 400                 .name = "Skl Audio DMIC cap",
 401                 .stream_name = "dmiccap",
 402                 .cpu_dai_name = "DMIC Pin",
 403                 .codec_name = "snd-soc-dummy",
 404                 .codec_dai_name = "snd-soc-dummy-dai",
 405                 .platform_name = "0000:00:1f.3",
 406                 .init = NULL,
 407                 .dpcm_capture = 1,
 408                 .nonatomic = 1,
 409                 .dynamic = 1,
 410                 .ops = &skylake_dmic_ops,
 411         },
 412         [SKL_DPCM_AUDIO_HDMI1_PB] = {
 413                 .name = "Skl HDMI Port1",
 414                 .stream_name = "Hdmi1",
 415                 .cpu_dai_name = "HDMI1 Pin",
 416                 .codec_name = "snd-soc-dummy",
 417                 .codec_dai_name = "snd-soc-dummy-dai",
 418                 .platform_name = "0000:00:1f.3",
 419                 .dpcm_playback = 1,
 420                 .init = NULL,
 421                 .trigger = {
 422                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 423                 .nonatomic = 1,
 424                 .dynamic = 1,
 425         },
 426         [SKL_DPCM_AUDIO_HDMI2_PB] = {
 427                 .name = "Skl HDMI Port2",
 428                 .stream_name = "Hdmi2",
 429                 .cpu_dai_name = "HDMI2 Pin",
 430                 .codec_name = "snd-soc-dummy",
 431                 .codec_dai_name = "snd-soc-dummy-dai",
 432                 .platform_name = "0000:00:1f.3",
 433                 .dpcm_playback = 1,
 434                 .init = NULL,
 435                 .trigger = {
 436                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 437                 .nonatomic = 1,
 438                 .dynamic = 1,
 439         },
 440         [SKL_DPCM_AUDIO_HDMI3_PB] = {
 441                 .name = "Skl HDMI Port3",
 442                 .stream_name = "Hdmi3",
 443                 .cpu_dai_name = "HDMI3 Pin",
 444                 .codec_name = "snd-soc-dummy",
 445                 .codec_dai_name = "snd-soc-dummy-dai",
 446                 .platform_name = "0000:00:1f.3",
 447                 .trigger = {
 448                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 449                 .dpcm_playback = 1,
 450                 .init = NULL,
 451                 .nonatomic = 1,
 452                 .dynamic = 1,
 453         },
 454
 455         /* Back End DAI links */
 456         {
 457                 /* SSP0 - Codec */
 458                 .name = "SSP0-Codec",
 459                 .be_id = 0,
 460                 .cpu_dai_name = "SSP0 Pin",
 461                 .platform_name = "0000:00:1f.3",
 462                 .no_pcm = 1,
 463                 .codec_name = "MX98357A:00",
 464                 .codec_dai_name = SKL_MAXIM_CODEC_DAI,
 465                 .dai_fmt = SND_SOC_DAIFMT_I2S |
 466                         SND_SOC_DAIFMT_NB_NF |
 467                         SND_SOC_DAIFMT_CBS_CFS,
 468                 .ignore_pmdown_time = 1,
 469                 .be_hw_params_fixup = skylake_ssp_fixup,
 470                 .dpcm_playback = 1,
 471         },
 472         {
 473                 /* SSP1 - Codec */
 474                 .name = "SSP1-Codec",
 475                 .be_id = 1,
 476                 .cpu_dai_name = "SSP1 Pin",
 477                 .platform_name = "0000:00:1f.3",
 478                 .no_pcm = 1,
 479                 .codec_name = "i2c-10508825:00",
 480                 .codec_dai_name = SKL_NUVOTON_CODEC_DAI,
 481                 .init = skylake_nau8825_codec_init,
 482                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 483                         SND_SOC_DAIFMT_CBS_CFS,
 484                 .ignore_pmdown_time = 1,
 485                 .be_hw_params_fixup = skylake_ssp_fixup,
 486                 .ops = &skylake_nau8825_ops,
 487                 .dpcm_playback = 1,
 488                 .dpcm_capture = 1,
 489         },
 490         {
 491                 .name = "dmic01",
 492                 .be_id = 2,
 493                 .cpu_dai_name = "DMIC01 Pin",
 494                 .codec_name = "dmic-codec",
 495                 .codec_dai_name = "dmic-hifi",
 496                 .platform_name = "0000:00:1f.3",
 497                 .be_hw_params_fixup = skylake_dmic_fixup,
 498                 .ignore_suspend = 1,
 499                 .dpcm_capture = 1,
 500                 .no_pcm = 1,
 501         },
 502         {
 503                 .name = "iDisp1",
 504                 .be_id = 3,
 505                 .cpu_dai_name = "iDisp1 Pin",
 506                 .codec_name = "ehdaudio0D2",
 507                 .codec_dai_name = "intel-hdmi-hifi1",
 508                 .platform_name = "0000:00:1f.3",
 509                 .dpcm_playback = 1,
 510                 .init = skylake_hdmi1_init,
 511                 .no_pcm = 1,
 512         },
 513         {
 514                 .name = "iDisp2",
 515                 .be_id = 4,
 516                 .cpu_dai_name = "iDisp2 Pin",
 517                 .codec_name = "ehdaudio0D2",
 518                 .codec_dai_name = "intel-hdmi-hifi2",
 519                 .platform_name = "0000:00:1f.3",
 520                 .init = skylake_hdmi2_init,
 521                 .dpcm_playback = 1,
 522                 .no_pcm = 1,
 523         },
 524         {
 525                 .name = "iDisp3",
 526                 .be_id = 5,
 527                 .cpu_dai_name = "iDisp3 Pin",
 528                 .codec_name = "ehdaudio0D2",
 529                 .codec_dai_name = "intel-hdmi-hifi3",
 530                 .platform_name = "0000:00:1f.3",
 531                 .init = skylake_hdmi3_init,
 532                 .dpcm_playback = 1,
 533                 .no_pcm = 1,
 534         },
 535 };
 536
 537 /* skylake audio machine driver for SPT + NAU88L25 */
 538 static struct snd_soc_card skylake_audio_card = {
 539         .name = "sklnau8825max",
 540         .owner = THIS_MODULE,
 541         .dai_link = skylake_dais,
 542         .num_links = ARRAY_SIZE(skylake_dais),
 543         .controls = skylake_controls,
 544         .num_controls = ARRAY_SIZE(skylake_controls),
 545         .dapm_widgets = skylake_widgets,
 546         .num_dapm_widgets = ARRAY_SIZE(skylake_widgets),
 547         .dapm_routes = skylake_map,
 548         .num_dapm_routes = ARRAY_SIZE(skylake_map),
 549         .fully_routed = true,
 550 };
 551
 552 static int skylake_audio_probe(struct platform_device *pdev)
 553 {
 554         skylake_audio_card.dev = &pdev->dev;
 555
 556         return devm_snd_soc_register_card(&pdev->dev, &skylake_audio_card);
 557 }
 558
 559 static struct platform_driver skylake_audio = {
 560         .probe = skylake_audio_probe,
 561         .driver = {
 562                 .name = "skl_nau88l25_max98357a_i2s",
 563                 .pm = &snd_soc_pm_ops,
 564         },
 565 };
 566
 567 module_platform_driver(skylake_audio)
 568
 569 /* Module information */
 570 MODULE_DESCRIPTION("Audio Machine driver-NAU88L25 & MAX98357A in I2S mode");
 571 MODULE_AUTHOR("Rohit Ainapure <rohit.m.ainapure@intel.com");
 572 MODULE_LICENSE("GPL v2");
 573 MODULE_ALIAS("platform:skl_nau88l25_max98357a_i2s");