sound/soc/intel/boards/cht_bsw_max98090_ti.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
   4  *  platforms Cherrytrail and Braswell, with max98090 & TI codec.
   5  *
   6  *  Copyright (C) 2015 Intel Corp
   7  *  Author: Fang, Yang A <yang.a.fang@intel.com>
   8  *  This file is modified from cht_bsw_rt5645.c
   9  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  10  *
  11  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  12  */
  13
  14 #include <linux/dmi.h>
  15 #include <linux/module.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/slab.h>
  18 #include <linux/acpi.h>
  19 #include <linux/clk.h>
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/soc.h>
  23 #include <sound/soc-acpi.h>
  24 #include <sound/jack.h>
  25 #include "../../codecs/max98090.h"
  26 #include "../atom/sst-atom-controls.h"
  27 #include "../../codecs/ts3a227e.h"
  28
  29 #define CHT_PLAT_CLK_3_HZ       19200000
  30 #define CHT_CODEC_DAI   "HiFi"
  31
  32 #define QUIRK_PMC_PLT_CLK_0                             0x01
  33
  34 struct cht_mc_private {
  35         struct clk *mclk;
  36         struct snd_soc_jack jack;
  37         bool ts3a227e_present;
  38         int quirks;
  39 };
  40
  41 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  42                                           struct snd_kcontrol *k, int  event)
  43 {
  44         struct snd_soc_dapm_context *dapm = w->dapm;
  45         struct snd_soc_card *card = dapm->card;
  46         struct snd_soc_dai *codec_dai;
  47         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
  48         int ret;
  49
  50         /* See the comment in snd_cht_mc_probe() */
  51         if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
  52                 return 0;
  53
  54         codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
  55         if (!codec_dai) {
  56                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  57                 return -EIO;
  58         }
  59
  60         if (SND_SOC_DAPM_EVENT_ON(event)) {
  61                 ret = clk_prepare_enable(ctx->mclk);
  62                 if (ret < 0) {
  63                         dev_err(card->dev,
  64                                 "could not configure MCLK state");
  65                         return ret;
  66                 }
  67         } else {
  68                 clk_disable_unprepare(ctx->mclk);
  69         }
  70
  71         return 0;
  72 }
  73
  74 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  75         SND_SOC_DAPM_HP("Headphone", NULL),
  76         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  77         SND_SOC_DAPM_MIC("Int Mic", NULL),
  78         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  79         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
  80                             platform_clock_control, SND_SOC_DAPM_PRE_PMU |
  81                             SND_SOC_DAPM_POST_PMD),
  82 };
  83
  84 static const struct snd_soc_dapm_route cht_audio_map[] = {
  85         {"IN34", NULL, "Headset Mic"},
  86         {"Headset Mic", NULL, "MICBIAS"},
  87         {"DMICL", NULL, "Int Mic"},
  88         {"Headphone", NULL, "HPL"},
  89         {"Headphone", NULL, "HPR"},
  90         {"Ext Spk", NULL, "SPKL"},
  91         {"Ext Spk", NULL, "SPKR"},
  92         {"HiFi Playback", NULL, "ssp2 Tx"},
  93         {"ssp2 Tx", NULL, "codec_out0"},
  94         {"ssp2 Tx", NULL, "codec_out1"},
  95         {"codec_in0", NULL, "ssp2 Rx" },
  96         {"codec_in1", NULL, "ssp2 Rx" },
  97         {"ssp2 Rx", NULL, "HiFi Capture"},
  98         {"Headphone", NULL, "Platform Clock"},
  99         {"Headset Mic", NULL, "Platform Clock"},
 100         {"Int Mic", NULL, "Platform Clock"},
 101         {"Ext Spk", NULL, "Platform Clock"},
 102 };
 103
 104 static const struct snd_kcontrol_new cht_mc_controls[] = {
 105         SOC_DAPM_PIN_SWITCH("Headphone"),
 106         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 107         SOC_DAPM_PIN_SWITCH("Int Mic"),
 108         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 109 };
 110
 111 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 112                              struct snd_pcm_hw_params *params)
 113 {
 114         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 115         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 116         int ret;
 117
 118         ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
 119                                      CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
 120         if (ret < 0) {
 121                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 122                 return ret;
 123         }
 124
 125         return 0;
 126 }
 127
 128 static int cht_ti_jack_event(struct notifier_block *nb,
 129                 unsigned long event, void *data)
 130 {
 131         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 132         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 133
 134         if (event & SND_JACK_MICROPHONE) {
 135                 snd_soc_dapm_force_enable_pin(dapm, "SHDN");
 136                 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
 137                 snd_soc_dapm_sync(dapm);
 138         } else {
 139                 snd_soc_dapm_disable_pin(dapm, "MICBIAS");
 140                 snd_soc_dapm_disable_pin(dapm, "SHDN");
 141                 snd_soc_dapm_sync(dapm);
 142         }
 143
 144         return 0;
 145 }
 146
 147 static struct notifier_block cht_jack_nb = {
 148         .notifier_call = cht_ti_jack_event,
 149 };
 150
 151 static struct snd_soc_jack_pin hs_jack_pins[] = {
 152         {
 153                 .pin    = "Headphone",
 154                 .mask   = SND_JACK_HEADPHONE,
 155         },
 156         {
 157                 .pin    = "Headset Mic",
 158                 .mask   = SND_JACK_MICROPHONE,
 159         },
 160 };
 161
 162 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 163         {
 164                 .name           = "hp",
 165                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
 166                 .debounce_time  = 200,
 167         },
 168         {
 169                 .name           = "mic",
 170                 .invert         = 1,
 171                 .report         = SND_JACK_MICROPHONE,
 172                 .debounce_time  = 200,
 173         },
 174 };
 175
 176 static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
 177 static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
 178
 179 static const struct acpi_gpio_mapping acpi_max98090_gpios[] = {
 180         { "hp-gpios", &hp_gpios, 1 },
 181         { "mic-gpios", &mic_gpios, 1 },
 182         {},
 183 };
 184
 185 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 186 {
 187         int ret;
 188         int jack_type;
 189         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 190         struct snd_soc_jack *jack = &ctx->jack;
 191
 192         if (ctx->ts3a227e_present) {
 193                 /*
 194                  * The jack has already been created in the
 195                  * cht_max98090_headset_init() function.
 196                  */
 197                 snd_soc_jack_notifier_register(jack, &cht_jack_nb);
 198                 return 0;
 199         }
 200
 201         jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
 202
 203         ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
 204                                     jack_type, jack,
 205                                     hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
 206         if (ret) {
 207                 dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
 208                 return ret;
 209         }
 210
 211         ret = snd_soc_jack_add_gpiods(runtime->card->dev->parent, jack,
 212                                       ARRAY_SIZE(hs_jack_gpios),
 213                                       hs_jack_gpios);
 214         if (ret) {
 215                 /*
 216                  * flag error but don't bail if jack detect is broken
 217                  * due to platform issues or bad BIOS/configuration
 218                  */
 219                 dev_err(runtime->dev,
 220                         "jack detection gpios not added, error %d\n", ret);
 221         }
 222
 223         /* See the comment in snd_cht_mc_probe() */
 224         if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
 225                 return 0;
 226
 227         /*
 228          * The firmware might enable the clock at
 229          * boot (this information may or may not
 230          * be reflected in the enable clock register).
 231          * To change the rate we must disable the clock
 232          * first to cover these cases. Due to common
 233          * clock framework restrictions that do not allow
 234          * to disable a clock that has not been enabled,
 235          * we need to enable the clock first.
 236          */
 237         ret = clk_prepare_enable(ctx->mclk);
 238         if (!ret)
 239                 clk_disable_unprepare(ctx->mclk);
 240
 241         ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
 242
 243         if (ret)
 244                 dev_err(runtime->dev, "unable to set MCLK rate\n");
 245
 246         return ret;
 247 }
 248
 249 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 250                             struct snd_pcm_hw_params *params)
 251 {
 252         struct snd_interval *rate = hw_param_interval(params,
 253                         SNDRV_PCM_HW_PARAM_RATE);
 254         struct snd_interval *channels = hw_param_interval(params,
 255                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 256         int ret = 0;
 257         unsigned int fmt = 0;
 258
 259         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
 260         if (ret < 0) {
 261                 dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
 262                 return ret;
 263         }
 264
 265         fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 266                                 | SND_SOC_DAIFMT_CBS_CFS;
 267
 268         ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
 269         if (ret < 0) {
 270                 dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
 271                 return ret;
 272         }
 273
 274         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 275         rate->min = rate->max = 48000;
 276         channels->min = channels->max = 2;
 277
 278         /* set SSP2 to 16-bit */
 279         params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
 280         return 0;
 281 }
 282
 283 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 284 {
 285         return snd_pcm_hw_constraint_single(substream->runtime,
 286                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 287 }
 288
 289 static int cht_max98090_headset_init(struct snd_soc_component *component)
 290 {
 291         struct snd_soc_card *card = component->card;
 292         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
 293         struct snd_soc_jack *jack = &ctx->jack;
 294         int jack_type;
 295         int ret;
 296
 297         /*
 298          * TI supports 4 butons headset detection
 299          * KEY_MEDIA
 300          * KEY_VOICECOMMAND
 301          * KEY_VOLUMEUP
 302          * KEY_VOLUMEDOWN
 303          */
 304         jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 305                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 306                     SND_JACK_BTN_2 | SND_JACK_BTN_3;
 307
 308         ret = snd_soc_card_jack_new(card, "Headset Jack", jack_type,
 309                                     jack, NULL, 0);
 310         if (ret) {
 311                 dev_err(card->dev, "Headset Jack creation failed %d\n", ret);
 312                 return ret;
 313         }
 314
 315         return ts3a227e_enable_jack_detect(component, jack);
 316 }
 317
 318 static const struct snd_soc_ops cht_aif1_ops = {
 319         .startup = cht_aif1_startup,
 320 };
 321
 322 static const struct snd_soc_ops cht_be_ssp2_ops = {
 323         .hw_params = cht_aif1_hw_params,
 324 };
 325
 326 static struct snd_soc_aux_dev cht_max98090_headset_dev = {
 327         .name = "Headset Chip",
 328         .init = cht_max98090_headset_init,
 329         .codec_name = "i2c-104C227E:00",
 330 };
 331
 332 SND_SOC_DAILINK_DEF(dummy,
 333         DAILINK_COMP_ARRAY(COMP_DUMMY()));
 334
 335 SND_SOC_DAILINK_DEF(media,
 336         DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
 337
 338 SND_SOC_DAILINK_DEF(deepbuffer,
 339         DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
 340
 341 SND_SOC_DAILINK_DEF(ssp2_port,
 342         DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
 343 SND_SOC_DAILINK_DEF(ssp2_codec,
 344         DAILINK_COMP_ARRAY(COMP_CODEC("i2c-193C9890:00", "HiFi")));
 345
 346 SND_SOC_DAILINK_DEF(platform,
 347         DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
 348
 349 static struct snd_soc_dai_link cht_dailink[] = {
 350         [MERR_DPCM_AUDIO] = {
 351                 .name = "Audio Port",
 352                 .stream_name = "Audio",
 353                 .nonatomic = true,
 354                 .dynamic = 1,
 355                 .dpcm_playback = 1,
 356                 .dpcm_capture = 1,
 357                 .ops = &cht_aif1_ops,
 358                 SND_SOC_DAILINK_REG(media, dummy, platform),
 359         },
 360         [MERR_DPCM_DEEP_BUFFER] = {
 361                 .name = "Deep-Buffer Audio Port",
 362                 .stream_name = "Deep-Buffer Audio",
 363                 .nonatomic = true,
 364                 .dynamic = 1,
 365                 .dpcm_playback = 1,
 366                 .ops = &cht_aif1_ops,
 367                 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
 368         },
 369         /* back ends */
 370         {
 371                 .name = "SSP2-Codec",
 372                 .id = 0,
 373                 .no_pcm = 1,
 374                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 375                                         | SND_SOC_DAIFMT_CBS_CFS,
 376                 .init = cht_codec_init,
 377                 .be_hw_params_fixup = cht_codec_fixup,
 378                 .dpcm_playback = 1,
 379                 .dpcm_capture = 1,
 380                 .ops = &cht_be_ssp2_ops,
 381                 SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
 382         },
 383 };
 384
 385 /* SoC card */
 386 static struct snd_soc_card snd_soc_card_cht = {
 387         .name = "chtmax98090",
 388         .owner = THIS_MODULE,
 389         .dai_link = cht_dailink,
 390         .num_links = ARRAY_SIZE(cht_dailink),
 391         .aux_dev = &cht_max98090_headset_dev,
 392         .num_aux_devs = 1,
 393         .dapm_widgets = cht_dapm_widgets,
 394         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 395         .dapm_routes = cht_audio_map,
 396         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 397         .controls = cht_mc_controls,
 398         .num_controls = ARRAY_SIZE(cht_mc_controls),
 399 };
 400
 401 static const struct dmi_system_id cht_max98090_quirk_table[] = {
 402         {
 403                 /* Banjo model Chromebook */
 404                 .matches = {
 405                         DMI_MATCH(DMI_PRODUCT_NAME, "Banjo"),
 406                 },
 407                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 408         },
 409         {
 410                 /* Candy model Chromebook */
 411                 .matches = {
 412                         DMI_MATCH(DMI_PRODUCT_NAME, "Candy"),
 413                 },
 414                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 415         },
 416         {
 417                 /* Clapper model Chromebook */
 418                 .matches = {
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "Clapper"),
 420                 },
 421                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 422         },
 423         {
 424                 /* Cyan model Chromebook */
 425                 .matches = {
 426                         DMI_MATCH(DMI_PRODUCT_NAME, "Cyan"),
 427                 },
 428                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 429         },
 430         {
 431                 /* Enguarde model Chromebook */
 432                 .matches = {
 433                         DMI_MATCH(DMI_PRODUCT_NAME, "Enguarde"),
 434                 },
 435                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 436         },
 437         {
 438                 /* Glimmer model Chromebook */
 439                 .matches = {
 440                         DMI_MATCH(DMI_PRODUCT_NAME, "Glimmer"),
 441                 },
 442                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 443         },
 444         {
 445                 /* Gnawty model Chromebook (Acer Chromebook CB3-111) */
 446                 .matches = {
 447                         DMI_MATCH(DMI_PRODUCT_NAME, "Gnawty"),
 448                 },
 449                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 450         },
 451         {
 452                 /* Heli model Chromebook */
 453                 .matches = {
 454                         DMI_MATCH(DMI_PRODUCT_NAME, "Heli"),
 455                 },
 456                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 457         },
 458         {
 459                 /* Kip model Chromebook */
 460                 .matches = {
 461                         DMI_MATCH(DMI_PRODUCT_NAME, "Kip"),
 462                 },
 463                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 464         },
 465         {
 466                 /* Ninja model Chromebook */
 467                 .matches = {
 468                         DMI_MATCH(DMI_PRODUCT_NAME, "Ninja"),
 469                 },
 470                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 471         },
 472         {
 473                 /* Orco model Chromebook */
 474                 .matches = {
 475                         DMI_MATCH(DMI_PRODUCT_NAME, "Orco"),
 476                 },
 477                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 478         },
 479         {
 480                 /* Quawks model Chromebook */
 481                 .matches = {
 482                         DMI_MATCH(DMI_PRODUCT_NAME, "Quawks"),
 483                 },
 484                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 485         },
 486         {
 487                 /* Rambi model Chromebook */
 488                 .matches = {
 489                         DMI_MATCH(DMI_PRODUCT_NAME, "Rambi"),
 490                 },
 491                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 492         },
 493         {
 494                 /* Squawks model Chromebook */
 495                 .matches = {
 496                         DMI_MATCH(DMI_PRODUCT_NAME, "Squawks"),
 497                 },
 498                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 499         },
 500         {
 501                 /* Sumo model Chromebook */
 502                 .matches = {
 503                         DMI_MATCH(DMI_PRODUCT_NAME, "Sumo"),
 504                 },
 505                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 506         },
 507         {
 508                 /* Swanky model Chromebook (Toshiba Chromebook 2) */
 509                 .matches = {
 510                         DMI_MATCH(DMI_PRODUCT_NAME, "Swanky"),
 511                 },
 512                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 513         },
 514         {
 515                 /* Winky model Chromebook */
 516                 .matches = {
 517                         DMI_MATCH(DMI_PRODUCT_NAME, "Winky"),
 518                 },
 519                 .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
 520         },
 521         {}
 522 };
 523
 524 static int snd_cht_mc_probe(struct platform_device *pdev)
 525 {
 526         const struct dmi_system_id *dmi_id;
 527         struct device *dev = &pdev->dev;
 528         int ret_val = 0;
 529         struct cht_mc_private *drv;
 530         const char *mclk_name;
 531         struct snd_soc_acpi_mach *mach;
 532         const char *platform_name;
 533
 534         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
 535         if (!drv)
 536                 return -ENOMEM;
 537
 538         dmi_id = dmi_first_match(cht_max98090_quirk_table);
 539         if (dmi_id)
 540                 drv->quirks = (unsigned long)dmi_id->driver_data;
 541
 542         drv->ts3a227e_present = acpi_dev_found("104C227E");
 543         if (!drv->ts3a227e_present) {
 544                 /* no need probe TI jack detection chip */
 545                 snd_soc_card_cht.aux_dev = NULL;
 546                 snd_soc_card_cht.num_aux_devs = 0;
 547
 548                 ret_val = devm_acpi_dev_add_driver_gpios(dev->parent,
 549                                                          acpi_max98090_gpios);
 550                 if (ret_val)
 551                         dev_dbg(dev, "Unable to add GPIO mapping table\n");
 552         }
 553
 554         /* override plaform name, if required */
 555         snd_soc_card_cht.dev = &pdev->dev;
 556         mach = (&pdev->dev)->platform_data;
 557         platform_name = mach->mach_params.platform;
 558
 559         ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
 560                                                         platform_name);
 561         if (ret_val)
 562                 return ret_val;
 563
 564         /* register the soc card */
 565         snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 566
 567         if (drv->quirks & QUIRK_PMC_PLT_CLK_0)
 568                 mclk_name = "pmc_plt_clk_0";
 569         else
 570                 mclk_name = "pmc_plt_clk_3";
 571
 572         drv->mclk = devm_clk_get(&pdev->dev, mclk_name);
 573         if (IS_ERR(drv->mclk)) {
 574                 dev_err(&pdev->dev,
 575                         "Failed to get MCLK from %s: %ld\n",
 576                         mclk_name, PTR_ERR(drv->mclk));
 577                 return PTR_ERR(drv->mclk);
 578         }
 579
 580         /*
 581          * Boards which have the MAX98090's clk connected to clk_0 do not seem
 582          * to like it if we muck with the clock. If we disable the clock when
 583          * it is unused we get "max98090 i2c-193C9890:00: PLL unlocked" errors
 584          * and the PLL never seems to lock again.
 585          * So for these boards we enable it here once and leave it at that.
 586          */
 587         if (drv->quirks & QUIRK_PMC_PLT_CLK_0) {
 588                 ret_val = clk_prepare_enable(drv->mclk);
 589                 if (ret_val < 0) {
 590                         dev_err(&pdev->dev, "MCLK enable error: %d\n", ret_val);
 591                         return ret_val;
 592                 }
 593         }
 594
 595         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 596         if (ret_val) {
 597                 dev_err(&pdev->dev,
 598                         "snd_soc_register_card failed %d\n", ret_val);
 599                 return ret_val;
 600         }
 601         platform_set_drvdata(pdev, &snd_soc_card_cht);
 602         return ret_val;
 603 }
 604
 605 static int snd_cht_mc_remove(struct platform_device *pdev)
 606 {
 607         struct snd_soc_card *card = platform_get_drvdata(pdev);
 608         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
 609
 610         if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
 611                 clk_disable_unprepare(ctx->mclk);
 612
 613         return 0;
 614 }
 615
 616 static struct platform_driver snd_cht_mc_driver = {
 617         .driver = {
 618                 .name = "cht-bsw-max98090",
 619         },
 620         .probe = snd_cht_mc_probe,
 621         .remove = snd_cht_mc_remove,
 622 };
 623
 624 module_platform_driver(snd_cht_mc_driver)
 625
 626 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 627 MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
 628 MODULE_LICENSE("GPL v2");
 629 MODULE_ALIAS("platform:cht-bsw-max98090");