sound/hda/intel-dsp-config.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2019 Jaroslav Kysela <perex@perex.cz>
   3
   4 #include <linux/acpi.h>
   5 #include <linux/bits.h>
   6 #include <linux/dmi.h>
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 #include <linux/soundwire/sdw.h>
  10 #include <linux/soundwire/sdw_intel.h>
  11 #include <sound/core.h>
  12 #include <sound/intel-dsp-config.h>
  13 #include <sound/intel-nhlt.h>
  14 #include <sound/soc-acpi.h>
  15
  16 static int dsp_driver;
  17
  18 module_param(dsp_driver, int, 0444);
  19 MODULE_PARM_DESC(dsp_driver, "Force the DSP driver for Intel DSP (0=auto, 1=legacy, 2=SST, 3=SOF)");
  20
  21 #define FLAG_SST                        BIT(0)
  22 #define FLAG_SOF                        BIT(1)
  23 #define FLAG_SST_ONLY_IF_DMIC           BIT(15)
  24 #define FLAG_SOF_ONLY_IF_DMIC           BIT(16)
  25 #define FLAG_SOF_ONLY_IF_SOUNDWIRE      BIT(17)
  26
  27 #define FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE (FLAG_SOF_ONLY_IF_DMIC | \
  28                                             FLAG_SOF_ONLY_IF_SOUNDWIRE)
  29
  30 struct config_entry {
  31         u32 flags;
  32         u16 device;
  33         u8 acpi_hid[ACPI_ID_LEN];
  34         const struct dmi_system_id *dmi_table;
  35         const struct snd_soc_acpi_codecs *codec_hid;
  36 };
  37
  38 static const struct snd_soc_acpi_codecs __maybe_unused essx_83x6 = {
  39         .num_codecs = 3,
  40         .codecs = { "ESSX8316", "ESSX8326", "ESSX8336"},
  41 };
  42
  43 /*
  44  * configuration table
  45  * - the order of similar PCI ID entries is important!
  46  * - the first successful match will win
  47  */
  48 static const struct config_entry config_table[] = {
  49 /* Merrifield */
  50 #if IS_ENABLED(CONFIG_SND_SOC_SOF_MERRIFIELD)
  51         {
  52                 .flags = FLAG_SOF,
  53                 .device = 0x119a,
  54         },
  55 #endif
  56 /* Broxton-T */
  57 #if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
  58         {
  59                 .flags = FLAG_SOF,
  60                 .device = 0x1a98,
  61         },
  62 #endif
  63 /*
  64  * Apollolake (Broxton-P)
  65  * the legacy HDAudio driver is used except on Up Squared (SOF) and
  66  * Chromebooks (SST), as well as devices based on the ES8336 codec
  67  */
  68 #if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
  69         {
  70                 .flags = FLAG_SOF,
  71                 .device = 0x5a98,
  72                 .dmi_table = (const struct dmi_system_id []) {
  73                         {
  74                                 .ident = "Up Squared",
  75                                 .matches = {
  76                                         DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
  77                                         DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"),
  78                                 }
  79                         },
  80                         {}
  81                 }
  82         },
  83         {
  84                 .flags = FLAG_SOF,
  85                 .device = 0x5a98,
  86                 .codec_hid =  &essx_83x6,
  87         },
  88 #endif
  89 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_APL)
  90         {
  91                 .flags = FLAG_SST,
  92                 .device = 0x5a98,
  93                 .dmi_table = (const struct dmi_system_id []) {
  94                         {
  95                                 .ident = "Google Chromebooks",
  96                                 .matches = {
  97                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
  98                                 }
  99                         },
 100                         {}
 101                 }
 102         },
 103 #endif
 104 /*
 105  * Skylake and Kabylake use legacy HDAudio driver except for Google
 106  * Chromebooks (SST)
 107  */
 108
 109 /* Sunrise Point-LP */
 110 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKL)
 111         {
 112                 .flags = FLAG_SST,
 113                 .device = 0x9d70,
 114                 .dmi_table = (const struct dmi_system_id []) {
 115                         {
 116                                 .ident = "Google Chromebooks",
 117                                 .matches = {
 118                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 119                                 }
 120                         },
 121                         {}
 122                 }
 123         },
 124         {
 125                 .flags = FLAG_SST | FLAG_SST_ONLY_IF_DMIC,
 126                 .device = 0x9d70,
 127         },
 128 #endif
 129 /* Kabylake-LP */
 130 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_KBL)
 131         {
 132                 .flags = FLAG_SST,
 133                 .device = 0x9d71,
 134                 .dmi_table = (const struct dmi_system_id []) {
 135                         {
 136                                 .ident = "Google Chromebooks",
 137                                 .matches = {
 138                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 139                                 }
 140                         },
 141                         {}
 142                 }
 143         },
 144         {
 145                 .flags = FLAG_SST | FLAG_SST_ONLY_IF_DMIC,
 146                 .device = 0x9d71,
 147         },
 148 #endif
 149
 150 /*
 151  * Geminilake uses legacy HDAudio driver except for Google
 152  * Chromebooks and devices based on the ES8336 codec
 153  */
 154 /* Geminilake */
 155 #if IS_ENABLED(CONFIG_SND_SOC_SOF_GEMINILAKE)
 156         {
 157                 .flags = FLAG_SOF,
 158                 .device = 0x3198,
 159                 .dmi_table = (const struct dmi_system_id []) {
 160                         {
 161                                 .ident = "Google Chromebooks",
 162                                 .matches = {
 163                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 164                                 }
 165                         },
 166                         {}
 167                 }
 168         },
 169         {
 170                 .flags = FLAG_SOF,
 171                 .device = 0x3198,
 172                 .codec_hid =  &essx_83x6,
 173         },
 174 #endif
 175
 176 /*
 177  * CoffeeLake, CannonLake, CometLake, IceLake, TigerLake use legacy
 178  * HDAudio driver except for Google Chromebooks and when DMICs are
 179  * present. Two cases are required since Coreboot does not expose NHLT
 180  * tables.
 181  *
 182  * When the Chromebook quirk is not present, it's based on information
 183  * that no such device exists. When the quirk is present, it could be
 184  * either based on product information or a placeholder.
 185  */
 186
 187 /* Cannonlake */
 188 #if IS_ENABLED(CONFIG_SND_SOC_SOF_CANNONLAKE)
 189         {
 190                 .flags = FLAG_SOF,
 191                 .device = 0x9dc8,
 192                 .dmi_table = (const struct dmi_system_id []) {
 193                         {
 194                                 .ident = "Google Chromebooks",
 195                                 .matches = {
 196                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 197                                 }
 198                         },
 199                         {
 200                                 .ident = "UP-WHL",
 201                                 .matches = {
 202                                         DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
 203                                 }
 204                         },
 205                         {}
 206                 }
 207         },
 208         {
 209                 .flags = FLAG_SOF,
 210                 .device = 0x09dc8,
 211                 .codec_hid =  &essx_83x6,
 212         },
 213         {
 214                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 215                 .device = 0x9dc8,
 216         },
 217 #endif
 218
 219 /* Coffelake */
 220 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COFFEELAKE)
 221         {
 222                 .flags = FLAG_SOF,
 223                 .device = 0xa348,
 224                 .dmi_table = (const struct dmi_system_id []) {
 225                         {
 226                                 .ident = "Google Chromebooks",
 227                                 .matches = {
 228                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 229                                 }
 230                         },
 231                         {}
 232                 }
 233         },
 234         {
 235                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 236                 .device = 0xa348,
 237         },
 238 #endif
 239
 240 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE)
 241 /* Cometlake-LP */
 242         {
 243                 .flags = FLAG_SOF,
 244                 .device = 0x02c8,
 245                 .dmi_table = (const struct dmi_system_id []) {
 246                         {
 247                                 .ident = "Google Chromebooks",
 248                                 .matches = {
 249                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 250                                 }
 251                         },
 252                         {
 253                                 .matches = {
 254                                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
 255                                         DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "09C6")
 256                                 },
 257                         },
 258                         {
 259                                 /* early version of SKU 09C6 */
 260                                 .matches = {
 261                                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
 262                                         DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0983")
 263                                 },
 264                         },
 265                         {}
 266                 }
 267         },
 268         {
 269                 .flags = FLAG_SOF,
 270                 .device = 0x02c8,
 271                 .codec_hid =  &essx_83x6,
 272         },
 273         {
 274                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 275                 .device = 0x02c8,
 276         },
 277 /* Cometlake-H */
 278         {
 279                 .flags = FLAG_SOF,
 280                 .device = 0x06c8,
 281                 .dmi_table = (const struct dmi_system_id []) {
 282                         {
 283                                 .matches = {
 284                                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
 285                                         DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "098F"),
 286                                 },
 287                         },
 288                         {
 289                                 .matches = {
 290                                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
 291                                         DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0990"),
 292                                 },
 293                         },
 294                         {}
 295                 }
 296         },
 297         {
 298                 .flags = FLAG_SOF,
 299                 .device = 0x06c8,
 300                 .codec_hid =  &essx_83x6,
 301         },
 302         {
 303                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 304                 .device = 0x06c8,
 305         },
 306 #endif
 307
 308 /* Icelake */
 309 #if IS_ENABLED(CONFIG_SND_SOC_SOF_ICELAKE)
 310         {
 311                 .flags = FLAG_SOF,
 312                 .device = 0x34c8,
 313                 .dmi_table = (const struct dmi_system_id []) {
 314                         {
 315                                 .ident = "Google Chromebooks",
 316                                 .matches = {
 317                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 318                                 }
 319                         },
 320                         {}
 321                 }
 322         },
 323         {
 324                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 325                 .device = 0x34c8,
 326         },
 327 #endif
 328
 329 /* Jasper Lake */
 330 #if IS_ENABLED(CONFIG_SND_SOC_SOF_JASPERLAKE)
 331         {
 332                 .flags = FLAG_SOF,
 333                 .device = 0x4dc8,
 334                 .dmi_table = (const struct dmi_system_id []) {
 335                         {
 336                                 .ident = "Google Chromebooks",
 337                                 .matches = {
 338                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 339                                 }
 340                         },
 341                         {}
 342                 }
 343         },
 344         {
 345                 .flags = FLAG_SOF,
 346                 .device = 0x4dc8,
 347                 .codec_hid =  &essx_83x6,
 348         },
 349         {
 350                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
 351                 .device = 0x4dc8,
 352         },
 353 #endif
 354
 355 /* Tigerlake */
 356 #if IS_ENABLED(CONFIG_SND_SOC_SOF_TIGERLAKE)
 357         {
 358                 .flags = FLAG_SOF,
 359                 .device = 0xa0c8,
 360                 .dmi_table = (const struct dmi_system_id []) {
 361                         {
 362                                 .ident = "Google Chromebooks",
 363                                 .matches = {
 364                                         DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 365                                 }
 366                         },
 367                         {
 368                                 .ident = "UPX-TGL",
 369                                 .matches = {
 370                                         DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
 371                                 }
 372                         },
 373                         {}
 374                 }
 375         },
 376         {
 377                 .flags = FLAG_SOF,
 378                 .device = 0xa0c8,
 379                 .codec_hid =  &essx_83x6,
 380         },
 381         {
 382                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 383                 .device = 0xa0c8,
 384         },
 385         {
 386                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 387                 .device = 0x43c8,
 388         },
 389 #endif
 390
 391 /* Elkhart Lake */
 392 #if IS_ENABLED(CONFIG_SND_SOC_SOF_ELKHARTLAKE)
 393         {
 394                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
 395                 .device = 0x4b55,
 396         },
 397         {
 398                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
 399                 .device = 0x4b58,
 400         },
 401 #endif
 402
 403 /* Alder Lake */
 404 #if IS_ENABLED(CONFIG_SND_SOC_SOF_ALDERLAKE)
 405         /* Alderlake-S */
 406         {
 407                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 408                 .device = 0x7ad0,
 409         },
 410         /* RaptorLake-S */
 411         {
 412                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 413                 .device = 0x7a50,
 414         },
 415         /* Alderlake-P */
 416         {
 417                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 418                 .device = 0x51c8,
 419         },
 420         {
 421                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 422                 .device = 0x51cd,
 423         },
 424         /* Alderlake-PS */
 425         {
 426                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 427                 .device = 0x51c9,
 428         },
 429         /* Alderlake-M */
 430         {
 431                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 432                 .device = 0x51cc,
 433         },
 434         /* Alderlake-N */
 435         {
 436                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 437                 .device = 0x54c8,
 438         },
 439         /* RaptorLake-P */
 440         {
 441                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 442                 .device = 0x51ca,
 443         },
 444         {
 445                 .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
 446                 .device = 0x51cb,
 447         },
 448 #endif
 449
 450 };
 451
 452 static const struct config_entry *snd_intel_dsp_find_config
 453                 (struct pci_dev *pci, const struct config_entry *table, u32 len)
 454 {
 455         u16 device;
 456
 457         device = pci->device;
 458         for (; len > 0; len--, table++) {
 459                 if (table->device != device)
 460                         continue;
 461                 if (table->dmi_table && !dmi_check_system(table->dmi_table))
 462                         continue;
 463                 if (table->codec_hid) {
 464                         int i;
 465
 466                         for (i = 0; i < table->codec_hid->num_codecs; i++)
 467                                 if (acpi_dev_present(table->codec_hid->codecs[i], NULL, -1))
 468                                         break;
 469                         if (i == table->codec_hid->num_codecs)
 470                                 continue;
 471                 }
 472                 return table;
 473         }
 474         return NULL;
 475 }
 476
 477 static int snd_intel_dsp_check_dmic(struct pci_dev *pci)
 478 {
 479         struct nhlt_acpi_table *nhlt;
 480         int ret = 0;
 481
 482         nhlt = intel_nhlt_init(&pci->dev);
 483         if (nhlt) {
 484                 if (intel_nhlt_has_endpoint_type(nhlt, NHLT_LINK_DMIC))
 485                         ret = 1;
 486                 intel_nhlt_free(nhlt);
 487         }
 488         return ret;
 489 }
 490
 491 #if IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
 492 static int snd_intel_dsp_check_soundwire(struct pci_dev *pci)
 493 {
 494         struct sdw_intel_acpi_info info;
 495         acpi_handle handle;
 496         int ret;
 497
 498         handle = ACPI_HANDLE(&pci->dev);
 499
 500         ret = sdw_intel_acpi_scan(handle, &info);
 501         if (ret < 0)
 502                 return ret;
 503
 504         return info.link_mask;
 505 }
 506 #else
 507 static int snd_intel_dsp_check_soundwire(struct pci_dev *pci)
 508 {
 509         return 0;
 510 }
 511 #endif
 512
 513 int snd_intel_dsp_driver_probe(struct pci_dev *pci)
 514 {
 515         const struct config_entry *cfg;
 516
 517         /* Intel vendor only */
 518         if (pci->vendor != 0x8086)
 519                 return SND_INTEL_DSP_DRIVER_ANY;
 520
 521         /*
 522          * Legacy devices don't have a PCI-based DSP and use HDaudio
 523          * for HDMI/DP support, ignore kernel parameter
 524          */
 525         switch (pci->device) {
 526         case 0x160c: /* Broadwell */
 527         case 0x0a0c: /* Haswell */
 528         case 0x0c0c:
 529         case 0x0d0c:
 530         case 0x0f04: /* Baytrail */
 531         case 0x2284: /* Braswell */
 532                 return SND_INTEL_DSP_DRIVER_ANY;
 533         }
 534
 535         if (dsp_driver > 0 && dsp_driver <= SND_INTEL_DSP_DRIVER_LAST)
 536                 return dsp_driver;
 537
 538         /*
 539          * detect DSP by checking class/subclass/prog-id information
 540          * class=04 subclass 03 prog-if 00: no DSP, use legacy driver
 541          * class=04 subclass 01 prog-if 00: DSP is present
 542          *  (and may be required e.g. for DMIC or SSP support)
 543          * class=04 subclass 03 prog-if 80: use DSP or legacy mode
 544          */
 545         if (pci->class == 0x040300)
 546                 return SND_INTEL_DSP_DRIVER_LEGACY;
 547         if (pci->class != 0x040100 && pci->class != 0x040380) {
 548                 dev_err(&pci->dev, "Unknown PCI class/subclass/prog-if information (0x%06x) found, selecting HDAudio legacy driver\n", pci->class);
 549                 return SND_INTEL_DSP_DRIVER_LEGACY;
 550         }
 551
 552         dev_info(&pci->dev, "DSP detected with PCI class/subclass/prog-if info 0x%06x\n", pci->class);
 553
 554         /* find the configuration for the specific device */
 555         cfg = snd_intel_dsp_find_config(pci, config_table, ARRAY_SIZE(config_table));
 556         if (!cfg)
 557                 return SND_INTEL_DSP_DRIVER_ANY;
 558
 559         if (cfg->flags & FLAG_SOF) {
 560                 if (cfg->flags & FLAG_SOF_ONLY_IF_SOUNDWIRE &&
 561                     snd_intel_dsp_check_soundwire(pci) > 0) {
 562                         dev_info(&pci->dev, "SoundWire enabled on CannonLake+ platform, using SOF driver\n");
 563                         return SND_INTEL_DSP_DRIVER_SOF;
 564                 }
 565                 if (cfg->flags & FLAG_SOF_ONLY_IF_DMIC &&
 566                     snd_intel_dsp_check_dmic(pci)) {
 567                         dev_info(&pci->dev, "Digital mics found on Skylake+ platform, using SOF driver\n");
 568                         return SND_INTEL_DSP_DRIVER_SOF;
 569                 }
 570                 if (!(cfg->flags & FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE))
 571                         return SND_INTEL_DSP_DRIVER_SOF;
 572         }
 573
 574
 575         if (cfg->flags & FLAG_SST) {
 576                 if (cfg->flags & FLAG_SST_ONLY_IF_DMIC) {
 577                         if (snd_intel_dsp_check_dmic(pci)) {
 578                                 dev_info(&pci->dev, "Digital mics found on Skylake+ platform, using SST driver\n");
 579                                 return SND_INTEL_DSP_DRIVER_SST;
 580                         }
 581                 } else {
 582                         return SND_INTEL_DSP_DRIVER_SST;
 583                 }
 584         }
 585
 586         return SND_INTEL_DSP_DRIVER_LEGACY;
 587 }
 588 EXPORT_SYMBOL_GPL(snd_intel_dsp_driver_probe);
 589
 590 /* Should we default to SOF or SST for BYT/CHT ? */
 591 #if IS_ENABLED(CONFIG_SND_INTEL_BYT_PREFER_SOF) || \
 592     !IS_ENABLED(CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_ACPI)
 593 #define FLAG_SST_OR_SOF_BYT     FLAG_SOF
 594 #else
 595 #define FLAG_SST_OR_SOF_BYT     FLAG_SST
 596 #endif
 597
 598 /*
 599  * configuration table
 600  * - the order of similar ACPI ID entries is important!
 601  * - the first successful match will win
 602  */
 603 static const struct config_entry acpi_config_table[] = {
 604 #if IS_ENABLED(CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_ACPI) || \
 605     IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
 606 /* BayTrail */
 607         {
 608                 .flags = FLAG_SST_OR_SOF_BYT,
 609                 .acpi_hid = "80860F28",
 610         },
 611 /* CherryTrail */
 612         {
 613                 .flags = FLAG_SST_OR_SOF_BYT,
 614                 .acpi_hid = "808622A8",
 615         },
 616 #endif
 617 /* Broadwell */
 618 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_CATPT)
 619         {
 620                 .flags = FLAG_SST,
 621                 .acpi_hid = "INT3438"
 622         },
 623 #endif
 624 #if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
 625         {
 626                 .flags = FLAG_SOF,
 627                 .acpi_hid = "INT3438"
 628         },
 629 #endif
 630 /* Haswell - not supported by SOF but added for consistency */
 631 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_CATPT)
 632         {
 633                 .flags = FLAG_SST,
 634                 .acpi_hid = "INT33C8"
 635         },
 636 #endif
 637 };
 638
 639 static const struct config_entry *snd_intel_acpi_dsp_find_config(const u8 acpi_hid[ACPI_ID_LEN],
 640                                                                  const struct config_entry *table,
 641                                                                  u32 len)
 642 {
 643         for (; len > 0; len--, table++) {
 644                 if (memcmp(table->acpi_hid, acpi_hid, ACPI_ID_LEN))
 645                         continue;
 646                 if (table->dmi_table && !dmi_check_system(table->dmi_table))
 647                         continue;
 648                 return table;
 649         }
 650         return NULL;
 651 }
 652
 653 int snd_intel_acpi_dsp_driver_probe(struct device *dev, const u8 acpi_hid[ACPI_ID_LEN])
 654 {
 655         const struct config_entry *cfg;
 656
 657         if (dsp_driver > SND_INTEL_DSP_DRIVER_LEGACY && dsp_driver <= SND_INTEL_DSP_DRIVER_LAST)
 658                 return dsp_driver;
 659
 660         if (dsp_driver == SND_INTEL_DSP_DRIVER_LEGACY) {
 661                 dev_warn(dev, "dsp_driver parameter %d not supported, using automatic detection\n",
 662                          SND_INTEL_DSP_DRIVER_LEGACY);
 663         }
 664
 665         /* find the configuration for the specific device */
 666         cfg = snd_intel_acpi_dsp_find_config(acpi_hid,  acpi_config_table,
 667                                              ARRAY_SIZE(acpi_config_table));
 668         if (!cfg)
 669                 return SND_INTEL_DSP_DRIVER_ANY;
 670
 671         if (cfg->flags & FLAG_SST)
 672                 return SND_INTEL_DSP_DRIVER_SST;
 673
 674         if (cfg->flags & FLAG_SOF)
 675                 return SND_INTEL_DSP_DRIVER_SOF;
 676
 677         return SND_INTEL_DSP_DRIVER_SST;
 678 }
 679 EXPORT_SYMBOL_GPL(snd_intel_acpi_dsp_driver_probe);
 680
 681 MODULE_LICENSE("GPL v2");
 682 MODULE_DESCRIPTION("Intel DSP config driver");
 683 MODULE_IMPORT_NS(SND_INTEL_SOUNDWIRE_ACPI);