linux/sound/soc/intel/boards/bxt_da7219_max98357a.c
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   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
  35static struct snd_soc_jack broxton_headset;
  36static struct snd_soc_jack broxton_hdmi[3];
  37
  38struct bxt_hdmi_pcm {
  39        struct list_head head;
  40        struct snd_soc_dai *codec_dai;
  41        int device;
  42};
  43
  44struct bxt_card_private {
  45        struct list_head hdmi_pcm_list;
  46};
  47
  48enum {
  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
  58static inline struct snd_soc_dai *bxt_get_codec_dai(struct snd_soc_card *card)
  59{
  60        struct snd_soc_pcm_runtime *rtd;
  61
  62        list_for_each_entry(rtd, &card->rtd_list, list) {
  63
  64                if (!strncmp(rtd->codec_dai->name, BXT_DIALOG_CODEC_DAI,
  65                             strlen(BXT_DIALOG_CODEC_DAI)))
  66                        return rtd->codec_dai;
  67        }
  68
  69        return NULL;
  70}
  71
  72static int platform_clock_control(struct snd_soc_dapm_widget *w,
  73        struct snd_kcontrol *k, int  event)
  74{
  75        int ret = 0;
  76        struct snd_soc_dapm_context *dapm = w->dapm;
  77        struct snd_soc_card *card = dapm->card;
  78        struct snd_soc_dai *codec_dai;
  79
  80        codec_dai = bxt_get_codec_dai(card);
  81        if (!codec_dai) {
  82                dev_err(card->dev, "Codec dai not found; Unable to set/unset codec pll\n");
  83                return -EIO;
  84        }
  85
  86        if (SND_SOC_DAPM_EVENT_OFF(event)) {
  87                ret = snd_soc_dai_set_pll(codec_dai, 0,
  88                        DA7219_SYSCLK_MCLK, 0, 0);
  89                if (ret)
  90                        dev_err(card->dev, "failed to stop PLL: %d\n", ret);
  91        } else if(SND_SOC_DAPM_EVENT_ON(event)) {
  92                ret = snd_soc_dai_set_pll(codec_dai, 0,
  93                        DA7219_SYSCLK_PLL_SRM, 0, DA7219_PLL_FREQ_OUT_98304);
  94                if (ret)
  95                        dev_err(card->dev, "failed to start PLL: %d\n", ret);
  96        }
  97
  98        return ret;
  99}
 100
 101static const struct snd_kcontrol_new broxton_controls[] = {
 102        SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 103        SOC_DAPM_PIN_SWITCH("Headset Mic"),
 104        SOC_DAPM_PIN_SWITCH("Spk"),
 105};
 106
 107static const struct snd_soc_dapm_widget broxton_widgets[] = {
 108        SND_SOC_DAPM_HP("Headphone Jack", NULL),
 109        SND_SOC_DAPM_MIC("Headset Mic", NULL),
 110        SND_SOC_DAPM_SPK("Spk", NULL),
 111        SND_SOC_DAPM_MIC("SoC DMIC", NULL),
 112        SND_SOC_DAPM_SPK("HDMI1", NULL),
 113        SND_SOC_DAPM_SPK("HDMI2", NULL),
 114        SND_SOC_DAPM_SPK("HDMI3", NULL),
 115        SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 116                        platform_clock_control, SND_SOC_DAPM_POST_PMD|SND_SOC_DAPM_PRE_PMU),
 117};
 118
 119static const struct snd_soc_dapm_route broxton_map[] = {
 120        /* HP jack connectors - unknown if we have jack detection */
 121        {"Headphone Jack", NULL, "HPL"},
 122        {"Headphone Jack", NULL, "HPR"},
 123
 124        /* speaker */
 125        {"Spk", NULL, "Speaker"},
 126
 127        /* other jacks */
 128        {"MIC", NULL, "Headset Mic"},
 129
 130        /* digital mics */
 131        {"DMic", NULL, "SoC DMIC"},
 132
 133        /* CODEC BE connections */
 134        {"HiFi Playback", NULL, "ssp5 Tx"},
 135        {"ssp5 Tx", NULL, "codec0_out"},
 136
 137        {"Playback", NULL, "ssp1 Tx"},
 138        {"ssp1 Tx", NULL, "codec1_out"},
 139
 140        {"codec0_in", NULL, "ssp1 Rx"},
 141        {"ssp1 Rx", NULL, "Capture"},
 142
 143        {"HDMI1", NULL, "hif5-0 Output"},
 144        {"HDMI2", NULL, "hif6-0 Output"},
 145        {"HDMI2", NULL, "hif7-0 Output"},
 146
 147        {"hifi3", NULL, "iDisp3 Tx"},
 148        {"iDisp3 Tx", NULL, "iDisp3_out"},
 149        {"hifi2", NULL, "iDisp2 Tx"},
 150        {"iDisp2 Tx", NULL, "iDisp2_out"},
 151        {"hifi1", NULL, "iDisp1 Tx"},
 152        {"iDisp1 Tx", NULL, "iDisp1_out"},
 153
 154        /* DMIC */
 155        {"dmic01_hifi", NULL, "DMIC01 Rx"},
 156        {"DMIC01 Rx", NULL, "DMIC AIF"},
 157
 158        { "Headphone Jack", NULL, "Platform Clock" },
 159        { "Headset Mic", NULL, "Platform Clock" },
 160};
 161
 162static int broxton_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
 163                        struct snd_pcm_hw_params *params)
 164{
 165        struct snd_interval *rate = hw_param_interval(params,
 166                        SNDRV_PCM_HW_PARAM_RATE);
 167        struct snd_interval *channels = hw_param_interval(params,
 168                        SNDRV_PCM_HW_PARAM_CHANNELS);
 169        struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 170
 171        /* The ADSP will convert the FE rate to 48k, stereo */
 172        rate->min = rate->max = 48000;
 173        channels->min = channels->max = DUAL_CHANNEL;
 174
 175        /* set SSP to 24 bit */
 176        snd_mask_none(fmt);
 177        snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE);
 178
 179        return 0;
 180}
 181
 182static int broxton_da7219_codec_init(struct snd_soc_pcm_runtime *rtd)
 183{
 184        int ret;
 185        struct snd_soc_dai *codec_dai = rtd->codec_dai;
 186        struct snd_soc_codec *codec = rtd->codec;
 187
 188        /* Configure sysclk for codec */
 189        ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK, 19200000,
 190                                     SND_SOC_CLOCK_IN);
 191        if (ret) {
 192                dev_err(rtd->dev, "can't set codec sysclk configuration\n");
 193                return ret;
 194        }
 195
 196        /*
 197         * Headset buttons map to the google Reference headset.
 198         * These can be configured by userspace.
 199         */
 200        ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
 201                        SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 202                        SND_JACK_BTN_2 | SND_JACK_BTN_3 | SND_JACK_LINEOUT,
 203                        &broxton_headset, NULL, 0);
 204        if (ret) {
 205                dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret);
 206                return ret;
 207        }
 208
 209        da7219_aad_jack_det(codec, &broxton_headset);
 210
 211        snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC");
 212
 213        return ret;
 214}
 215
 216static int broxton_hdmi_init(struct snd_soc_pcm_runtime *rtd)
 217{
 218        struct bxt_card_private *ctx = snd_soc_card_get_drvdata(rtd->card);
 219        struct snd_soc_dai *dai = rtd->codec_dai;
 220        struct bxt_hdmi_pcm *pcm;
 221
 222        pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
 223        if (!pcm)
 224                return -ENOMEM;
 225
 226        pcm->device = BXT_DPCM_AUDIO_HDMI1_PB + dai->id;
 227        pcm->codec_dai = dai;
 228
 229        list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
 230
 231        return 0;
 232}
 233
 234static int broxton_da7219_fe_init(struct snd_soc_pcm_runtime *rtd)
 235{
 236        struct snd_soc_dapm_context *dapm;
 237        struct snd_soc_component *component = rtd->cpu_dai->component;
 238
 239        dapm = snd_soc_component_get_dapm(component);
 240        snd_soc_dapm_ignore_suspend(dapm, "Reference Capture");
 241
 242        return 0;
 243}
 244
 245static const unsigned int rates[] = {
 246        48000,
 247};
 248
 249static const struct snd_pcm_hw_constraint_list constraints_rates = {
 250        .count = ARRAY_SIZE(rates),
 251        .list  = rates,
 252        .mask = 0,
 253};
 254
 255static const unsigned int channels[] = {
 256        DUAL_CHANNEL,
 257};
 258
 259static const struct snd_pcm_hw_constraint_list constraints_channels = {
 260        .count = ARRAY_SIZE(channels),
 261        .list = channels,
 262        .mask = 0,
 263};
 264
 265static const unsigned int channels_quad[] = {
 266        QUAD_CHANNEL,
 267};
 268
 269static const struct snd_pcm_hw_constraint_list constraints_channels_quad = {
 270        .count = ARRAY_SIZE(channels_quad),
 271        .list = channels_quad,
 272        .mask = 0,
 273};
 274
 275static int bxt_fe_startup(struct snd_pcm_substream *substream)
 276{
 277        struct snd_pcm_runtime *runtime = substream->runtime;
 278
 279        /*
 280         * On this platform for PCM device we support,
 281         * 48Khz
 282         * stereo
 283         * 16 bit audio
 284         */
 285
 286        runtime->hw.channels_max = DUAL_CHANNEL;
 287        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 288                                           &constraints_channels);
 289
 290        runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
 291        snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
 292
 293        snd_pcm_hw_constraint_list(runtime, 0,
 294                                SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 295
 296        return 0;
 297}
 298
 299static const struct snd_soc_ops broxton_da7219_fe_ops = {
 300        .startup = bxt_fe_startup,
 301};
 302
 303static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
 304                        struct snd_pcm_hw_params *params)
 305{
 306        struct snd_interval *channels = hw_param_interval(params,
 307                                                SNDRV_PCM_HW_PARAM_CHANNELS);
 308        if (params_channels(params) == 2)
 309                channels->min = channels->max = 2;
 310        else
 311                channels->min = channels->max = 4;
 312
 313        return 0;
 314}
 315
 316static int broxton_dmic_startup(struct snd_pcm_substream *substream)
 317{
 318        struct snd_pcm_runtime *runtime = substream->runtime;
 319
 320        runtime->hw.channels_min = runtime->hw.channels_max = QUAD_CHANNEL;
 321        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 322                        &constraints_channels_quad);
 323
 324        return snd_pcm_hw_constraint_list(substream->runtime, 0,
 325                        SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
 326}
 327
 328static const struct snd_soc_ops broxton_dmic_ops = {
 329        .startup = broxton_dmic_startup,
 330};
 331
 332static const unsigned int rates_16000[] = {
 333        16000,
 334};
 335
 336static const struct snd_pcm_hw_constraint_list constraints_16000 = {
 337        .count = ARRAY_SIZE(rates_16000),
 338        .list  = rates_16000,
 339};
 340
 341static int broxton_refcap_startup(struct snd_pcm_substream *substream)
 342{
 343        return snd_pcm_hw_constraint_list(substream->runtime, 0,
 344                        SNDRV_PCM_HW_PARAM_RATE,
 345                        &constraints_16000);
 346};
 347
 348static const struct snd_soc_ops broxton_refcap_ops = {
 349        .startup = broxton_refcap_startup,
 350};
 351
 352/* broxton digital audio interface glue - connects codec <--> CPU */
 353static struct snd_soc_dai_link broxton_dais[] = {
 354        /* Front End DAI links */
 355        [BXT_DPCM_AUDIO_PB] =
 356        {
 357                .name = "Bxt Audio Port",
 358                .stream_name = "Audio",
 359                .cpu_dai_name = "System Pin",
 360                .platform_name = "0000:00:0e.0",
 361                .dynamic = 1,
 362                .codec_name = "snd-soc-dummy",
 363                .codec_dai_name = "snd-soc-dummy-dai",
 364                .nonatomic = 1,
 365                .init = broxton_da7219_fe_init,
 366                .trigger = {
 367                        SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 368                .dpcm_playback = 1,
 369                .ops = &broxton_da7219_fe_ops,
 370        },
 371        [BXT_DPCM_AUDIO_CP] =
 372        {
 373                .name = "Bxt Audio Capture Port",
 374                .stream_name = "Audio Record",
 375                .cpu_dai_name = "System Pin",
 376                .platform_name = "0000:00:0e.0",
 377                .dynamic = 1,
 378                .codec_name = "snd-soc-dummy",
 379                .codec_dai_name = "snd-soc-dummy-dai",
 380                .nonatomic = 1,
 381                .trigger = {
 382                        SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 383                .dpcm_capture = 1,
 384                .ops = &broxton_da7219_fe_ops,
 385        },
 386        [BXT_DPCM_AUDIO_REF_CP] =
 387        {
 388                .name = "Bxt Audio Reference cap",
 389                .stream_name = "Refcap",
 390                .cpu_dai_name = "Reference 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_refcap_ops,
 399        },
 400        [BXT_DPCM_AUDIO_DMIC_CP] =
 401        {
 402                .name = "Bxt Audio DMIC cap",
 403                .stream_name = "dmiccap",
 404                .cpu_dai_name = "DMIC Pin",
 405                .codec_name = "snd-soc-dummy",
 406                .codec_dai_name = "snd-soc-dummy-dai",
 407                .platform_name = "0000:00:0e.0",
 408                .init = NULL,
 409                .dpcm_capture = 1,
 410                .nonatomic = 1,
 411                .dynamic = 1,
 412                .ops = &broxton_dmic_ops,
 413        },
 414        [BXT_DPCM_AUDIO_HDMI1_PB] =
 415        {
 416                .name = "Bxt HDMI Port1",
 417                .stream_name = "Hdmi1",
 418                .cpu_dai_name = "HDMI1 Pin",
 419                .codec_name = "snd-soc-dummy",
 420                .codec_dai_name = "snd-soc-dummy-dai",
 421                .platform_name = "0000:00:0e.0",
 422                .dpcm_playback = 1,
 423                .init = NULL,
 424                .nonatomic = 1,
 425                .dynamic = 1,
 426        },
 427        [BXT_DPCM_AUDIO_HDMI2_PB] =
 428        {
 429                .name = "Bxt HDMI Port2",
 430                .stream_name = "Hdmi2",
 431                .cpu_dai_name = "HDMI2 Pin",
 432                .codec_name = "snd-soc-dummy",
 433                .codec_dai_name = "snd-soc-dummy-dai",
 434                .platform_name = "0000:00:0e.0",
 435                .dpcm_playback = 1,
 436                .init = NULL,
 437                .nonatomic = 1,
 438                .dynamic = 1,
 439        },
 440        [BXT_DPCM_AUDIO_HDMI3_PB] =
 441        {
 442                .name = "Bxt HDMI Port3",
 443                .stream_name = "Hdmi3",
 444                .cpu_dai_name = "HDMI3 Pin",
 445                .codec_name = "snd-soc-dummy",
 446                .codec_dai_name = "snd-soc-dummy-dai",
 447                .platform_name = "0000:00:0e.0",
 448                .dpcm_playback = 1,
 449                .init = NULL,
 450                .nonatomic = 1,
 451                .dynamic = 1,
 452        },
 453        /* Back End DAI links */
 454        {
 455                /* SSP5 - Codec */
 456                .name = "SSP5-Codec",
 457                .id = 0,
 458                .cpu_dai_name = "SSP5 Pin",
 459                .platform_name = "0000:00:0e.0",
 460                .no_pcm = 1,
 461                .codec_name = "MX98357A:00",
 462                .codec_dai_name = BXT_MAXIM_CODEC_DAI,
 463                .dai_fmt = SND_SOC_DAIFMT_I2S |
 464                        SND_SOC_DAIFMT_NB_NF |
 465                        SND_SOC_DAIFMT_CBS_CFS,
 466                .ignore_pmdown_time = 1,
 467                .be_hw_params_fixup = broxton_ssp_fixup,
 468                .dpcm_playback = 1,
 469        },
 470        {
 471                /* SSP1 - Codec */
 472                .name = "SSP1-Codec",
 473                .id = 1,
 474                .cpu_dai_name = "SSP1 Pin",
 475                .platform_name = "0000:00:0e.0",
 476                .no_pcm = 1,
 477                .codec_name = "i2c-DLGS7219:00",
 478                .codec_dai_name = BXT_DIALOG_CODEC_DAI,
 479                .init = broxton_da7219_codec_init,
 480                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 481                        SND_SOC_DAIFMT_CBS_CFS,
 482                .ignore_pmdown_time = 1,
 483                .be_hw_params_fixup = broxton_ssp_fixup,
 484                .dpcm_playback = 1,
 485                .dpcm_capture = 1,
 486        },
 487        {
 488                .name = "dmic01",
 489                .id = 2,
 490                .cpu_dai_name = "DMIC01 Pin",
 491                .codec_name = "dmic-codec",
 492                .codec_dai_name = "dmic-hifi",
 493                .platform_name = "0000:00:0e.0",
 494                .ignore_suspend = 1,
 495                .be_hw_params_fixup = broxton_dmic_fixup,
 496                .dpcm_capture = 1,
 497                .no_pcm = 1,
 498        },
 499        {
 500                .name = "iDisp1",
 501                .id = 3,
 502                .cpu_dai_name = "iDisp1 Pin",
 503                .codec_name = "ehdaudio0D2",
 504                .codec_dai_name = "intel-hdmi-hifi1",
 505                .platform_name = "0000:00:0e.0",
 506                .init = broxton_hdmi_init,
 507                .dpcm_playback = 1,
 508                .no_pcm = 1,
 509        },
 510        {
 511                .name = "iDisp2",
 512                .id = 4,
 513                .cpu_dai_name = "iDisp2 Pin",
 514                .codec_name = "ehdaudio0D2",
 515                .codec_dai_name = "intel-hdmi-hifi2",
 516                .platform_name = "0000:00:0e.0",
 517                .init = broxton_hdmi_init,
 518                .dpcm_playback = 1,
 519                .no_pcm = 1,
 520        },
 521        {
 522                .name = "iDisp3",
 523                .id = 5,
 524                .cpu_dai_name = "iDisp3 Pin",
 525                .codec_name = "ehdaudio0D2",
 526                .codec_dai_name = "intel-hdmi-hifi3",
 527                .platform_name = "0000:00:0e.0",
 528                .init = broxton_hdmi_init,
 529                .dpcm_playback = 1,
 530                .no_pcm = 1,
 531        },
 532};
 533
 534#define NAME_SIZE       32
 535static int bxt_card_late_probe(struct snd_soc_card *card)
 536{
 537        struct bxt_card_private *ctx = snd_soc_card_get_drvdata(card);
 538        struct bxt_hdmi_pcm *pcm;
 539        struct snd_soc_codec *codec = NULL;
 540        int err, i = 0;
 541        char jack_name[NAME_SIZE];
 542
 543        list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
 544                codec = pcm->codec_dai->codec;
 545                snprintf(jack_name, sizeof(jack_name),
 546                        "HDMI/DP, pcm=%d Jack", pcm->device);
 547                err = snd_soc_card_jack_new(card, jack_name,
 548                                        SND_JACK_AVOUT, &broxton_hdmi[i],
 549                                        NULL, 0);
 550
 551                if (err)
 552                        return err;
 553
 554                err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
 555                                                &broxton_hdmi[i]);
 556                if (err < 0)
 557                        return err;
 558
 559                i++;
 560        }
 561
 562        if (!codec)
 563                return -EINVAL;
 564
 565        return hdac_hdmi_jack_port_init(codec, &card->dapm);
 566}
 567
 568/* broxton audio machine driver for SPT + da7219 */
 569static struct snd_soc_card broxton_audio_card = {
 570        .name = "bxtda7219max",
 571        .owner = THIS_MODULE,
 572        .dai_link = broxton_dais,
 573        .num_links = ARRAY_SIZE(broxton_dais),
 574        .controls = broxton_controls,
 575        .num_controls = ARRAY_SIZE(broxton_controls),
 576        .dapm_widgets = broxton_widgets,
 577        .num_dapm_widgets = ARRAY_SIZE(broxton_widgets),
 578        .dapm_routes = broxton_map,
 579        .num_dapm_routes = ARRAY_SIZE(broxton_map),
 580        .fully_routed = true,
 581        .late_probe = bxt_card_late_probe,
 582};
 583
 584static int broxton_audio_probe(struct platform_device *pdev)
 585{
 586        struct bxt_card_private *ctx;
 587
 588        ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC);
 589        if (!ctx)
 590                return -ENOMEM;
 591
 592        INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
 593
 594        broxton_audio_card.dev = &pdev->dev;
 595        snd_soc_card_set_drvdata(&broxton_audio_card, ctx);
 596
 597        return devm_snd_soc_register_card(&pdev->dev, &broxton_audio_card);
 598}
 599
 600static struct platform_driver broxton_audio = {
 601        .probe = broxton_audio_probe,
 602        .driver = {
 603                .name = "bxt_da7219_max98357a_i2s",
 604                .pm = &snd_soc_pm_ops,
 605        },
 606};
 607module_platform_driver(broxton_audio)
 608
 609/* Module information */
 610MODULE_DESCRIPTION("Audio Machine driver-DA7219 & MAX98357A in I2S mode");
 611MODULE_AUTHOR("Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>");
 612MODULE_AUTHOR("Rohit Ainapure <rohit.m.ainapure@intel.com>");
 613MODULE_AUTHOR("Harsha Priya <harshapriya.n@intel.com>");
 614MODULE_AUTHOR("Conrad Cooke <conrad.cooke@intel.com>");
 615MODULE_LICENSE("GPL v2");
 616MODULE_ALIAS("platform:bxt_da7219_max98357a_i2s");
 617