sound/soc/intel/boards/bxt_da7219_max98357a.c

   1 /*
   2  * Intel Broxton-P I2S Machine Driver
   3  *
   4  * Copyright (C) 2016, Intel Corporation. All rights reserved.
   5  *
   6  * Modified from:
   7  *   Intel Skylake I2S Machine driver
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License version
  11  * 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/platform_device.h>
  21 #include <sound/core.h>
  22 #include <sound/jack.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include "../../codecs/hdac_hdmi.h"
  27 #include "../../codecs/da7219.h"
  28 #include "../../codecs/da7219-aad.h"
  29
  30 #define BXT_DIALOG_CODEC_DAI    "da7219-hifi"
  31 #define BXT_MAXIM_CODEC_DAI     "HiFi"
  32 #define DUAL_CHANNEL            2
  33 #define QUAD_CHANNEL            4
  34
  35 static struct snd_soc_jack broxton_headset;
  36 static struct snd_soc_jack broxton_hdmi[3];
  37
  38 struct bxt_hdmi_pcm {
  39         struct list_head head;
  40         struct snd_soc_dai *codec_dai;
  41         int device;
  42 };
  43
  44 struct bxt_card_private {
  45         struct list_head hdmi_pcm_list;
  46 };
  47
  48 enum {
  49         BXT_DPCM_AUDIO_PB = 0,
  50         BXT_DPCM_AUDIO_CP,
  51         BXT_DPCM_AUDIO_REF_CP,
  52         BXT_DPCM_AUDIO_DMIC_CP,
  53         BXT_DPCM_AUDIO_HDMI1_PB,
  54         BXT_DPCM_AUDIO_HDMI2_PB,
  55         BXT_DPCM_AUDIO_HDMI3_PB,
  56 };
  57
  58 static const struct snd_kcontrol_new broxton_controls[] = {
  59         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
  60         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  61         SOC_DAPM_PIN_SWITCH("Spk"),
  62 };
  63
  64 static const struct snd_soc_dapm_widget broxton_widgets[] = {
  65         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  66         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  67         SND_SOC_DAPM_SPK("Spk", NULL),
  68         SND_SOC_DAPM_MIC("SoC DMIC", NULL),
  69         SND_SOC_DAPM_SPK("HDMI1", NULL),
  70         SND_SOC_DAPM_SPK("HDMI2", NULL),
  71         SND_SOC_DAPM_SPK("HDMI3", NULL),
  72 };
  73
  74 static const struct snd_soc_dapm_route broxton_map[] = {
  75         /* HP jack connectors - unknown if we have jack detection */
  76         {"Headphone Jack", NULL, "HPL"},
  77         {"Headphone Jack", NULL, "HPR"},
  78
  79         /* speaker */
  80         {"Spk", NULL, "Speaker"},
  81
  82         /* other jacks */
  83         {"MIC", NULL, "Headset Mic"},
  84
  85         /* digital mics */
  86         {"DMic", NULL, "SoC DMIC"},
  87
  88         /* CODEC BE connections */
  89         {"HiFi Playback", NULL, "ssp5 Tx"},
  90         {"ssp5 Tx", NULL, "codec0_out"},
  91
  92         {"Playback", NULL, "ssp1 Tx"},
  93         {"ssp1 Tx", NULL, "codec1_out"},
  94
  95         {"codec0_in", NULL, "ssp1 Rx"},
  96         {"ssp1 Rx", NULL, "Capture"},
  97
  98         {"HDMI1", NULL, "hif5-0 Output"},
  99         {"HDMI2", NULL, "hif6-0 Output"},
 100         {"HDMI2", NULL, "hif7-0 Output"},
 101
 102         {"hifi3", NULL, "iDisp3 Tx"},
 103         {"iDisp3 Tx", NULL, "iDisp3_out"},
 104         {"hifi2", NULL, "iDisp2 Tx"},
 105         {"iDisp2 Tx", NULL, "iDisp2_out"},
 106         {"hifi1", NULL, "iDisp1 Tx"},
 107         {"iDisp1 Tx", NULL, "iDisp1_out"},
 108
 109         /* DMIC */
 110         {"dmic01_hifi", NULL, "DMIC01 Rx"},
 111         {"DMIC01 Rx", NULL, "DMIC AIF"},
 112 };
 113
 114 static int broxton_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
 115                         struct snd_pcm_hw_params *params)
 116 {
 117         struct snd_interval *rate = hw_param_interval(params,
 118                         SNDRV_PCM_HW_PARAM_RATE);
 119         struct snd_interval *channels = hw_param_interval(params,
 120                         SNDRV_PCM_HW_PARAM_CHANNELS);
 121         struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 122
 123         /* The ADSP will convert the FE rate to 48k, stereo */
 124         rate->min = rate->max = 48000;
 125         channels->min = channels->max = DUAL_CHANNEL;
 126
 127         /* set SSP to 24 bit */
 128         snd_mask_none(fmt);
 129         snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE);
 130
 131         return 0;
 132 }
 133
 134 static int broxton_da7219_codec_init(struct snd_soc_pcm_runtime *rtd)
 135 {
 136         int ret;
 137         struct snd_soc_codec *codec = rtd->codec;
 138
 139         /*
 140          * Headset buttons map to the google Reference headset.
 141          * These can be configured by userspace.
 142          */
 143         ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
 144                         SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 145                         SND_JACK_BTN_2 | SND_JACK_BTN_3 | SND_JACK_LINEOUT,
 146                         &broxton_headset, NULL, 0);
 147         if (ret) {
 148                 dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret);
 149                 return ret;
 150         }
 151
 152         da7219_aad_jack_det(codec, &broxton_headset);
 153
 154         snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC");
 155
 156         return ret;
 157 }
 158
 159 static int broxton_hdmi_init(struct snd_soc_pcm_runtime *rtd)
 160 {
 161         struct bxt_card_private *ctx = snd_soc_card_get_drvdata(rtd->card);
 162         struct snd_soc_dai *dai = rtd->codec_dai;
 163         struct bxt_hdmi_pcm *pcm;
 164
 165         pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
 166         if (!pcm)
 167                 return -ENOMEM;
 168
 169         pcm->device = BXT_DPCM_AUDIO_HDMI1_PB + dai->id;
 170         pcm->codec_dai = dai;
 171
 172         list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
 173
 174         return 0;
 175 }
 176
 177 static int broxton_da7219_fe_init(struct snd_soc_pcm_runtime *rtd)
 178 {
 179         struct snd_soc_dapm_context *dapm;
 180         struct snd_soc_component *component = rtd->cpu_dai->component;
 181
 182         dapm = snd_soc_component_get_dapm(component);
 183         snd_soc_dapm_ignore_suspend(dapm, "Reference Capture");
 184
 185         return 0;
 186 }
 187
 188 static unsigned int rates[] = {
 189         48000,
 190 };
 191
 192 static struct snd_pcm_hw_constraint_list constraints_rates = {
 193         .count = ARRAY_SIZE(rates),
 194         .list  = rates,
 195         .mask = 0,
 196 };
 197
 198 static unsigned int channels[] = {
 199         DUAL_CHANNEL,
 200 };
 201
 202 static struct snd_pcm_hw_constraint_list constraints_channels = {
 203         .count = ARRAY_SIZE(channels),
 204         .list = channels,
 205         .mask = 0,
 206 };
 207
 208 static unsigned int channels_quad[] = {
 209         QUAD_CHANNEL,
 210 };
 211
 212 static struct snd_pcm_hw_constraint_list constraints_channels_quad = {
 213         .count = ARRAY_SIZE(channels_quad),
 214         .list = channels_quad,
 215         .mask = 0,
 216 };
 217
 218 static int bxt_fe_startup(struct snd_pcm_substream *substream)
 219 {
 220         struct snd_pcm_runtime *runtime = substream->runtime;
 221
 222         /*
 223          * On this platform for PCM device we support,
 224          * 48Khz
 225          * stereo
 226          * 16 bit audio
 227          */
 228
 229         runtime->hw.channels_max = DUAL_CHANNEL;
 230         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 231                                            &constraints_channels);
 232
 233         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
 234         snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
 235
 236         snd_pcm_hw_constraint_list(runtime, 0,
 237                                 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 238
 239         return 0;
 240 }
 241
 242 static const struct snd_soc_ops broxton_da7219_fe_ops = {
 243         .startup = bxt_fe_startup,
 244 };
 245
 246 static int broxton_da7219_hw_params(struct snd_pcm_substream *substream,
 247                                 struct snd_pcm_hw_params *params)
 248 {
 249         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 250         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 251         int ret;
 252
 253         ret = snd_soc_dai_set_sysclk(codec_dai,
 254                         DA7219_CLKSRC_MCLK, 19200000, SND_SOC_CLOCK_IN);
 255         if (ret < 0)
 256                 dev_err(codec_dai->dev, "can't set codec sysclk configuration\n");
 257
 258         ret = snd_soc_dai_set_pll(codec_dai, 0,
 259                         DA7219_SYSCLK_PLL_SRM, 0, DA7219_PLL_FREQ_OUT_98304);
 260         if (ret < 0) {
 261                 dev_err(codec_dai->dev, "failed to start PLL: %d\n", ret);
 262                 return -EIO;
 263         }
 264
 265         return ret;
 266 }
 267
 268 static int broxton_da7219_hw_free(struct snd_pcm_substream *substream)
 269 {
 270         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 271         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 272         int ret;
 273
 274         ret = snd_soc_dai_set_pll(codec_dai, 0,
 275                         DA7219_SYSCLK_MCLK, 0, 0);
 276         if (ret < 0) {
 277                 dev_err(codec_dai->dev, "failed to stop PLL: %d\n", ret);
 278                 return -EIO;
 279         }
 280
 281         return ret;
 282 }
 283
 284 static const struct snd_soc_ops broxton_da7219_ops = {
 285         .hw_params = broxton_da7219_hw_params,
 286         .hw_free = broxton_da7219_hw_free,
 287 };
 288
 289 static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
 290                         struct snd_pcm_hw_params *params)
 291 {
 292         struct snd_interval *channels = hw_param_interval(params,
 293                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 294         if (params_channels(params) == 2)
 295                 channels->min = channels->max = 2;
 296         else
 297                 channels->min = channels->max = 4;
 298
 299         return 0;
 300 }
 301
 302 static int broxton_dmic_startup(struct snd_pcm_substream *substream)
 303 {
 304         struct snd_pcm_runtime *runtime = substream->runtime;
 305
 306         runtime->hw.channels_min = runtime->hw.channels_max = QUAD_CHANNEL;
 307         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 308                         &constraints_channels_quad);
 309
 310         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 311                         SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 312 }
 313
 314 static const struct snd_soc_ops broxton_dmic_ops = {
 315         .startup = broxton_dmic_startup,
 316 };
 317
 318 static const unsigned int rates_16000[] = {
 319         16000,
 320 };
 321
 322 static const struct snd_pcm_hw_constraint_list constraints_16000 = {
 323         .count = ARRAY_SIZE(rates_16000),
 324         .list  = rates_16000,
 325 };
 326
 327 static int broxton_refcap_startup(struct snd_pcm_substream *substream)
 328 {
 329         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 330                         SNDRV_PCM_HW_PARAM_RATE,
 331                         &constraints_16000);
 332 };
 333
 334 static const struct snd_soc_ops broxton_refcap_ops = {
 335         .startup = broxton_refcap_startup,
 336 };
 337
 338 /* broxton digital audio interface glue - connects codec <--> CPU */
 339 static struct snd_soc_dai_link broxton_dais[] = {
 340         /* Front End DAI links */
 341         [BXT_DPCM_AUDIO_PB] =
 342         {
 343                 .name = "Bxt Audio Port",
 344                 .stream_name = "Audio",
 345                 .cpu_dai_name = "System Pin",
 346                 .platform_name = "0000:00:0e.0",
 347                 .dynamic = 1,
 348                 .codec_name = "snd-soc-dummy",
 349                 .codec_dai_name = "snd-soc-dummy-dai",
 350                 .nonatomic = 1,
 351                 .init = broxton_da7219_fe_init,
 352                 .trigger = {
 353                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 354                 .dpcm_playback = 1,
 355                 .ops = &broxton_da7219_fe_ops,
 356         },
 357         [BXT_DPCM_AUDIO_CP] =
 358         {
 359                 .name = "Bxt Audio Capture Port",
 360                 .stream_name = "Audio Record",
 361                 .cpu_dai_name = "System Pin",
 362                 .platform_name = "0000:00:0e.0",
 363                 .dynamic = 1,
 364                 .codec_name = "snd-soc-dummy",
 365                 .codec_dai_name = "snd-soc-dummy-dai",
 366                 .nonatomic = 1,
 367                 .trigger = {
 368                         SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 369                 .dpcm_capture = 1,
 370                 .ops = &broxton_da7219_fe_ops,
 371         },
 372         [BXT_DPCM_AUDIO_REF_CP] =
 373         {
 374                 .name = "Bxt Audio Reference cap",
 375                 .stream_name = "Refcap",
 376                 .cpu_dai_name = "Reference Pin",
 377                 .codec_name = "snd-soc-dummy",
 378                 .codec_dai_name = "snd-soc-dummy-dai",
 379                 .platform_name = "0000:00:0e.0",
 380                 .init = NULL,
 381                 .dpcm_capture = 1,
 382                 .nonatomic = 1,
 383                 .dynamic = 1,
 384                 .ops = &broxton_refcap_ops,
 385         },
 386         [BXT_DPCM_AUDIO_DMIC_CP] =
 387         {
 388                 .name = "Bxt Audio DMIC cap",
 389                 .stream_name = "dmiccap",
 390                 .cpu_dai_name = "DMIC Pin",
 391                 .codec_name = "snd-soc-dummy",
 392                 .codec_dai_name = "snd-soc-dummy-dai",
 393                 .platform_name = "0000:00:0e.0",
 394                 .init = NULL,
 395                 .dpcm_capture = 1,
 396                 .nonatomic = 1,
 397                 .dynamic = 1,
 398                 .ops = &broxton_dmic_ops,
 399         },
 400         [BXT_DPCM_AUDIO_HDMI1_PB] =
 401         {
 402                 .name = "Bxt HDMI Port1",
 403                 .stream_name = "Hdmi1",
 404                 .cpu_dai_name = "HDMI1 Pin",
 405                 .codec_name = "snd-soc-dummy",
 406                 .codec_dai_name = "snd-soc-dummy-dai",
 407                 .platform_name = "0000:00:0e.0",
 408                 .dpcm_playback = 1,
 409                 .init = NULL,
 410                 .nonatomic = 1,
 411                 .dynamic = 1,
 412         },
 413         [BXT_DPCM_AUDIO_HDMI2_PB] =
 414         {
 415                 .name = "Bxt HDMI Port2",
 416                 .stream_name = "Hdmi2",
 417                 .cpu_dai_name = "HDMI2 Pin",
 418                 .codec_name = "snd-soc-dummy",
 419                 .codec_dai_name = "snd-soc-dummy-dai",
 420                 .platform_name = "0000:00:0e.0",
 421                 .dpcm_playback = 1,
 422                 .init = NULL,
 423                 .nonatomic = 1,
 424                 .dynamic = 1,
 425         },
 426         [BXT_DPCM_AUDIO_HDMI3_PB] =
 427         {
 428                 .name = "Bxt HDMI Port3",
 429                 .stream_name = "Hdmi3",
 430                 .cpu_dai_name = "HDMI3 Pin",
 431                 .codec_name = "snd-soc-dummy",
 432                 .codec_dai_name = "snd-soc-dummy-dai",
 433                 .platform_name = "0000:00:0e.0",
 434                 .dpcm_playback = 1,
 435                 .init = NULL,
 436                 .nonatomic = 1,
 437                 .dynamic = 1,
 438         },
 439         /* Back End DAI links */
 440         {
 441                 /* SSP5 - Codec */
 442                 .name = "SSP5-Codec",
 443                 .id = 0,
 444                 .cpu_dai_name = "SSP5 Pin",
 445                 .platform_name = "0000:00:0e.0",
 446                 .no_pcm = 1,
 447                 .codec_name = "MX98357A:00",
 448                 .codec_dai_name = BXT_MAXIM_CODEC_DAI,
 449                 .dai_fmt = SND_SOC_DAIFMT_I2S |
 450                         SND_SOC_DAIFMT_NB_NF |
 451                         SND_SOC_DAIFMT_CBS_CFS,
 452                 .ignore_pmdown_time = 1,
 453                 .be_hw_params_fixup = broxton_ssp_fixup,
 454                 .dpcm_playback = 1,
 455         },
 456         {
 457                 /* SSP1 - Codec */
 458                 .name = "SSP1-Codec",
 459                 .id = 1,
 460                 .cpu_dai_name = "SSP1 Pin",
 461                 .platform_name = "0000:00:0e.0",
 462                 .no_pcm = 1,
 463                 .codec_name = "i2c-DLGS7219:00",
 464                 .codec_dai_name = BXT_DIALOG_CODEC_DAI,
 465                 .init = broxton_da7219_codec_init,
 466                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 467                         SND_SOC_DAIFMT_CBS_CFS,
 468                 .ignore_pmdown_time = 1,
 469                 .be_hw_params_fixup = broxton_ssp_fixup,
 470                 .ops = &broxton_da7219_ops,
 471                 .dpcm_playback = 1,
 472                 .dpcm_capture = 1,
 473         },
 474         {
 475                 .name = "dmic01",
 476                 .id = 2,
 477                 .cpu_dai_name = "DMIC01 Pin",
 478                 .codec_name = "dmic-codec",
 479                 .codec_dai_name = "dmic-hifi",
 480                 .platform_name = "0000:00:0e.0",
 481                 .ignore_suspend = 1,
 482                 .be_hw_params_fixup = broxton_dmic_fixup,
 483                 .dpcm_capture = 1,
 484                 .no_pcm = 1,
 485         },
 486         {
 487                 .name = "iDisp1",
 488                 .id = 3,
 489                 .cpu_dai_name = "iDisp1 Pin",
 490                 .codec_name = "ehdaudio0D2",
 491                 .codec_dai_name = "intel-hdmi-hifi1",
 492                 .platform_name = "0000:00:0e.0",
 493                 .init = broxton_hdmi_init,
 494                 .dpcm_playback = 1,
 495                 .no_pcm = 1,
 496         },
 497         {
 498                 .name = "iDisp2",
 499                 .id = 4,
 500                 .cpu_dai_name = "iDisp2 Pin",
 501                 .codec_name = "ehdaudio0D2",
 502                 .codec_dai_name = "intel-hdmi-hifi2",
 503                 .platform_name = "0000:00:0e.0",
 504                 .init = broxton_hdmi_init,
 505                 .dpcm_playback = 1,
 506                 .no_pcm = 1,
 507         },
 508         {
 509                 .name = "iDisp3",
 510                 .id = 5,
 511                 .cpu_dai_name = "iDisp3 Pin",
 512                 .codec_name = "ehdaudio0D2",
 513                 .codec_dai_name = "intel-hdmi-hifi3",
 514                 .platform_name = "0000:00:0e.0",
 515                 .init = broxton_hdmi_init,
 516                 .dpcm_playback = 1,
 517                 .no_pcm = 1,
 518         },
 519 };
 520
 521 #define NAME_SIZE       32
 522 static int bxt_card_late_probe(struct snd_soc_card *card)
 523 {
 524         struct bxt_card_private *ctx = snd_soc_card_get_drvdata(card);
 525         struct bxt_hdmi_pcm *pcm;
 526         struct snd_soc_codec *codec = NULL;
 527         int err, i = 0;
 528         char jack_name[NAME_SIZE];
 529
 530         list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
 531                 codec = pcm->codec_dai->codec;
 532                 snprintf(jack_name, sizeof(jack_name),
 533                         "HDMI/DP, pcm=%d Jack", pcm->device);
 534                 err = snd_soc_card_jack_new(card, jack_name,
 535                                         SND_JACK_AVOUT, &broxton_hdmi[i],
 536                                         NULL, 0);
 537
 538                 if (err)
 539                         return err;
 540
 541                 err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
 542                                                 &broxton_hdmi[i]);
 543                 if (err < 0)
 544                         return err;
 545
 546                 i++;
 547         }
 548
 549         if (!codec)
 550                 return -EINVAL;
 551
 552         return hdac_hdmi_jack_port_init(codec, &card->dapm);
 553 }
 554
 555 /* broxton audio machine driver for SPT + da7219 */
 556 static struct snd_soc_card broxton_audio_card = {
 557         .name = "bxtda7219max",
 558         .owner = THIS_MODULE,
 559         .dai_link = broxton_dais,
 560         .num_links = ARRAY_SIZE(broxton_dais),
 561         .controls = broxton_controls,
 562         .num_controls = ARRAY_SIZE(broxton_controls),
 563         .dapm_widgets = broxton_widgets,
 564         .num_dapm_widgets = ARRAY_SIZE(broxton_widgets),
 565         .dapm_routes = broxton_map,
 566         .num_dapm_routes = ARRAY_SIZE(broxton_map),
 567         .fully_routed = true,
 568         .late_probe = bxt_card_late_probe,
 569 };
 570
 571 static int broxton_audio_probe(struct platform_device *pdev)
 572 {
 573         struct bxt_card_private *ctx;
 574
 575         ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC);
 576         if (!ctx)
 577                 return -ENOMEM;
 578
 579         INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
 580
 581         broxton_audio_card.dev = &pdev->dev;
 582         snd_soc_card_set_drvdata(&broxton_audio_card, ctx);
 583
 584         return devm_snd_soc_register_card(&pdev->dev, &broxton_audio_card);
 585 }
 586
 587 static struct platform_driver broxton_audio = {
 588         .probe = broxton_audio_probe,
 589         .driver = {
 590                 .name = "bxt_da7219_max98357a_i2s",
 591                 .pm = &snd_soc_pm_ops,
 592         },
 593 };
 594 module_platform_driver(broxton_audio)
 595
 596 /* Module information */
 597 MODULE_DESCRIPTION("Audio Machine driver-DA7219 & MAX98357A in I2S mode");
 598 MODULE_AUTHOR("Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>");
 599 MODULE_AUTHOR("Rohit Ainapure <rohit.m.ainapure@intel.com>");
 600 MODULE_AUTHOR("Harsha Priya <harshapriya.n@intel.com>");
 601 MODULE_AUTHOR("Conrad Cooke <conrad.cooke@intel.com>");
 602 MODULE_LICENSE("GPL v2");
 603 MODULE_ALIAS("platform:bxt_da7219_max98357a_i2s");