1 // SPDX-License-Identifier: GPL-2.0-only 2 // Copyright(c) 2021 Intel Corporation. 3 4 /* 5 * Intel SOF Machine Driver with Cirrus Logic CS42L42 Codec 6 * and speaker codec MAX98357A 7 */ 8 #include <linux/i2c.h> 9 #include <linux/input.h> 10 #include <linux/module.h> 11 #include <linux/platform_device.h> 12 #include <linux/regulator/consumer.h> 13 #include <linux/dmi.h> 14 #include <sound/core.h> 15 #include <sound/jack.h> 16 #include <sound/pcm.h> 17 #include <sound/pcm_params.h> 18 #include <sound/soc.h> 19 #include <sound/sof.h> 20 #include <sound/soc-acpi.h> 21 #include <dt-bindings/sound/cs42l42.h> 22 #include "../../codecs/hdac_hdmi.h" 23 #include "../common/soc-intel-quirks.h" 24 #include "hda_dsp_common.h" 25 #include "sof_maxim_common.h" 26 27 #define NAME_SIZE 32 28 29 #define SOF_CS42L42_SSP_CODEC(quirk) ((quirk) & GENMASK(2, 0)) 30 #define SOF_CS42L42_SSP_CODEC_MASK (GENMASK(2, 0)) 31 #define SOF_SPEAKER_AMP_PRESENT BIT(3) 32 #define SOF_CS42L42_SSP_AMP_SHIFT 4 33 #define SOF_CS42L42_SSP_AMP_MASK (GENMASK(6, 4)) 34 #define SOF_CS42L42_SSP_AMP(quirk) \ 35 (((quirk) << SOF_CS42L42_SSP_AMP_SHIFT) & SOF_CS42L42_SSP_AMP_MASK) 36 #define SOF_CS42L42_NUM_HDMIDEV_SHIFT 7 37 #define SOF_CS42L42_NUM_HDMIDEV_MASK (GENMASK(9, 7)) 38 #define SOF_CS42L42_NUM_HDMIDEV(quirk) \ 39 (((quirk) << SOF_CS42L42_NUM_HDMIDEV_SHIFT) & SOF_CS42L42_NUM_HDMIDEV_MASK) 40 #define SOF_CS42L42_DAILINK_SHIFT 10 41 #define SOF_CS42L42_DAILINK_MASK (GENMASK(24, 10)) 42 #define SOF_CS42L42_DAILINK(link1, link2, link3, link4, link5) \ 43 ((((link1) | ((link2) << 3) | ((link3) << 6) | ((link4) << 9) | ((link5) << 12)) << SOF_CS42L42_DAILINK_SHIFT) & SOF_CS42L42_DAILINK_MASK) 44 #define SOF_MAX98357A_SPEAKER_AMP_PRESENT BIT(25) 45 #define SOF_MAX98360A_SPEAKER_AMP_PRESENT BIT(26) 46 47 enum { 48 LINK_NONE = 0, 49 LINK_HP = 1, 50 LINK_SPK = 2, 51 LINK_DMIC = 3, 52 LINK_HDMI = 4, 53 }; 54 55 /* Default: SSP2 */ 56 static unsigned long sof_cs42l42_quirk = SOF_CS42L42_SSP_CODEC(2); 57 58 struct sof_hdmi_pcm { 59 struct list_head head; 60 struct snd_soc_dai *codec_dai; 61 struct snd_soc_jack hdmi_jack; 62 int device; 63 }; 64 65 struct sof_card_private { 66 struct snd_soc_jack headset_jack; 67 struct list_head hdmi_pcm_list; 68 bool common_hdmi_codec_drv; 69 }; 70 71 static int sof_hdmi_init(struct snd_soc_pcm_runtime *rtd) 72 { 73 struct sof_card_private *ctx = snd_soc_card_get_drvdata(rtd->card); 74 struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0); 75 struct sof_hdmi_pcm *pcm; 76 77 pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL); 78 if (!pcm) 79 return -ENOMEM; 80 81 /* dai_link id is 1:1 mapped to the PCM device */ 82 pcm->device = rtd->dai_link->id; 83 pcm->codec_dai = dai; 84 85 list_add_tail(&pcm->head, &ctx->hdmi_pcm_list); 86 87 return 0; 88 } 89 90 static int sof_cs42l42_init(struct snd_soc_pcm_runtime *rtd) 91 { 92 struct sof_card_private *ctx = snd_soc_card_get_drvdata(rtd->card); 93 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; 94 struct snd_soc_jack *jack = &ctx->headset_jack; 95 int ret; 96 97 /* 98 * Headset buttons map to the google Reference headset. 99 * These can be configured by userspace. 100 */ 101 ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", 102 SND_JACK_HEADSET | SND_JACK_BTN_0 | 103 SND_JACK_BTN_1 | SND_JACK_BTN_2 | 104 SND_JACK_BTN_3, 105 jack, NULL, 0); 106 if (ret) { 107 dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret); 108 return ret; 109 } 110 111 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 112 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP); 113 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); 114 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND); 115 116 ret = snd_soc_component_set_jack(component, jack, NULL); 117 if (ret) { 118 dev_err(rtd->dev, "Headset Jack call-back failed: %d\n", ret); 119 return ret; 120 } 121 122 return ret; 123 }; 124 125 static void sof_cs42l42_exit(struct snd_soc_pcm_runtime *rtd) 126 { 127 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; 128 129 snd_soc_component_set_jack(component, NULL, NULL); 130 } 131 132 static int sof_cs42l42_hw_params(struct snd_pcm_substream *substream, 133 struct snd_pcm_hw_params *params) 134 { 135 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 136 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 137 int clk_freq, ret; 138 139 clk_freq = sof_dai_get_bclk(rtd); /* BCLK freq */ 140 141 if (clk_freq <= 0) { 142 dev_err(rtd->dev, "get bclk freq failed: %d\n", clk_freq); 143 return -EINVAL; 144 } 145 146 /* Configure sysclk for codec */ 147 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 148 clk_freq, SND_SOC_CLOCK_IN); 149 if (ret < 0) 150 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret); 151 152 return ret; 153 } 154 155 static const struct snd_soc_ops sof_cs42l42_ops = { 156 .hw_params = sof_cs42l42_hw_params, 157 }; 158 159 static struct snd_soc_dai_link_component platform_component[] = { 160 { 161 /* name might be overridden during probe */ 162 .name = "0000:00:1f.3" 163 } 164 }; 165 166 static int sof_card_late_probe(struct snd_soc_card *card) 167 { 168 struct sof_card_private *ctx = snd_soc_card_get_drvdata(card); 169 struct snd_soc_component *component = NULL; 170 char jack_name[NAME_SIZE]; 171 struct sof_hdmi_pcm *pcm; 172 int err; 173 174 if (list_empty(&ctx->hdmi_pcm_list)) 175 return -EINVAL; 176 177 if (ctx->common_hdmi_codec_drv) { 178 pcm = list_first_entry(&ctx->hdmi_pcm_list, struct sof_hdmi_pcm, 179 head); 180 component = pcm->codec_dai->component; 181 return hda_dsp_hdmi_build_controls(card, component); 182 } 183 184 list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) { 185 component = pcm->codec_dai->component; 186 snprintf(jack_name, sizeof(jack_name), 187 "HDMI/DP, pcm=%d Jack", pcm->device); 188 err = snd_soc_card_jack_new(card, jack_name, 189 SND_JACK_AVOUT, &pcm->hdmi_jack, 190 NULL, 0); 191 192 if (err) 193 return err; 194 195 err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device, 196 &pcm->hdmi_jack); 197 if (err < 0) 198 return err; 199 } 200 201 return hdac_hdmi_jack_port_init(component, &card->dapm); 202 } 203 204 static const struct snd_kcontrol_new sof_controls[] = { 205 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 206 SOC_DAPM_PIN_SWITCH("Headset Mic"), 207 }; 208 209 static const struct snd_soc_dapm_widget sof_widgets[] = { 210 SND_SOC_DAPM_HP("Headphone Jack", NULL), 211 SND_SOC_DAPM_MIC("Headset Mic", NULL), 212 }; 213 214 static const struct snd_soc_dapm_widget dmic_widgets[] = { 215 SND_SOC_DAPM_MIC("SoC DMIC", NULL), 216 }; 217 218 static const struct snd_soc_dapm_route sof_map[] = { 219 /* HP jack connectors - unknown if we have jack detection */ 220 {"Headphone Jack", NULL, "HP"}, 221 222 /* other jacks */ 223 {"HS", NULL, "Headset Mic"}, 224 }; 225 226 static const struct snd_soc_dapm_route dmic_map[] = { 227 /* digital mics */ 228 {"DMic", NULL, "SoC DMIC"}, 229 }; 230 231 static int dmic_init(struct snd_soc_pcm_runtime *rtd) 232 { 233 struct snd_soc_card *card = rtd->card; 234 int ret; 235 236 ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets, 237 ARRAY_SIZE(dmic_widgets)); 238 if (ret) { 239 dev_err(card->dev, "DMic widget addition failed: %d\n", ret); 240 /* Don't need to add routes if widget addition failed */ 241 return ret; 242 } 243 244 ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map, 245 ARRAY_SIZE(dmic_map)); 246 247 if (ret) 248 dev_err(card->dev, "DMic map addition failed: %d\n", ret); 249 250 return ret; 251 } 252 253 /* sof audio machine driver for cs42l42 codec */ 254 static struct snd_soc_card sof_audio_card_cs42l42 = { 255 .name = "cs42l42", /* the sof- prefix is added by the core */ 256 .owner = THIS_MODULE, 257 .controls = sof_controls, 258 .num_controls = ARRAY_SIZE(sof_controls), 259 .dapm_widgets = sof_widgets, 260 .num_dapm_widgets = ARRAY_SIZE(sof_widgets), 261 .dapm_routes = sof_map, 262 .num_dapm_routes = ARRAY_SIZE(sof_map), 263 .fully_routed = true, 264 .late_probe = sof_card_late_probe, 265 }; 266 267 static struct snd_soc_dai_link_component cs42l42_component[] = { 268 { 269 .name = "i2c-10134242:00", 270 .dai_name = "cs42l42", 271 } 272 }; 273 274 static struct snd_soc_dai_link_component dmic_component[] = { 275 { 276 .name = "dmic-codec", 277 .dai_name = "dmic-hifi", 278 } 279 }; 280 281 static int create_spk_amp_dai_links(struct device *dev, 282 struct snd_soc_dai_link *links, 283 struct snd_soc_dai_link_component *cpus, 284 int *id, int ssp_amp) 285 { 286 int ret = 0; 287 288 /* speaker amp */ 289 if (!(sof_cs42l42_quirk & SOF_SPEAKER_AMP_PRESENT)) 290 return 0; 291 292 links[*id].name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", 293 ssp_amp); 294 if (!links[*id].name) { 295 ret = -ENOMEM; 296 goto devm_err; 297 } 298 299 links[*id].id = *id; 300 301 if (sof_cs42l42_quirk & SOF_MAX98357A_SPEAKER_AMP_PRESENT) { 302 max_98357a_dai_link(&links[*id]); 303 } else if (sof_cs42l42_quirk & SOF_MAX98360A_SPEAKER_AMP_PRESENT) { 304 max_98360a_dai_link(&links[*id]); 305 } else { 306 dev_err(dev, "no amp defined\n"); 307 ret = -EINVAL; 308 goto devm_err; 309 } 310 311 links[*id].platforms = platform_component; 312 links[*id].num_platforms = ARRAY_SIZE(platform_component); 313 links[*id].dpcm_playback = 1; 314 links[*id].no_pcm = 1; 315 links[*id].cpus = &cpus[*id]; 316 links[*id].num_cpus = 1; 317 318 links[*id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 319 "SSP%d Pin", ssp_amp); 320 if (!links[*id].cpus->dai_name) { 321 ret = -ENOMEM; 322 goto devm_err; 323 } 324 325 (*id)++; 326 327 devm_err: 328 return ret; 329 } 330 331 static int create_hp_codec_dai_links(struct device *dev, 332 struct snd_soc_dai_link *links, 333 struct snd_soc_dai_link_component *cpus, 334 int *id, int ssp_codec) 335 { 336 /* codec SSP */ 337 links[*id].name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", 338 ssp_codec); 339 if (!links[*id].name) 340 goto devm_err; 341 342 links[*id].id = *id; 343 links[*id].codecs = cs42l42_component; 344 links[*id].num_codecs = ARRAY_SIZE(cs42l42_component); 345 links[*id].platforms = platform_component; 346 links[*id].num_platforms = ARRAY_SIZE(platform_component); 347 links[*id].init = sof_cs42l42_init; 348 links[*id].exit = sof_cs42l42_exit; 349 links[*id].ops = &sof_cs42l42_ops; 350 links[*id].dpcm_playback = 1; 351 links[*id].dpcm_capture = 1; 352 links[*id].no_pcm = 1; 353 links[*id].cpus = &cpus[*id]; 354 links[*id].num_cpus = 1; 355 356 links[*id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 357 "SSP%d Pin", 358 ssp_codec); 359 if (!links[*id].cpus->dai_name) 360 goto devm_err; 361 362 (*id)++; 363 364 return 0; 365 366 devm_err: 367 return -ENOMEM; 368 } 369 370 static int create_dmic_dai_links(struct device *dev, 371 struct snd_soc_dai_link *links, 372 struct snd_soc_dai_link_component *cpus, 373 int *id, int dmic_be_num) 374 { 375 int i; 376 377 /* dmic */ 378 if (dmic_be_num <= 0) 379 return 0; 380 381 /* at least we have dmic01 */ 382 links[*id].name = "dmic01"; 383 links[*id].cpus = &cpus[*id]; 384 links[*id].cpus->dai_name = "DMIC01 Pin"; 385 links[*id].init = dmic_init; 386 if (dmic_be_num > 1) { 387 /* set up 2 BE links at most */ 388 links[*id + 1].name = "dmic16k"; 389 links[*id + 1].cpus = &cpus[*id + 1]; 390 links[*id + 1].cpus->dai_name = "DMIC16k Pin"; 391 dmic_be_num = 2; 392 } 393 394 for (i = 0; i < dmic_be_num; i++) { 395 links[*id].id = *id; 396 links[*id].num_cpus = 1; 397 links[*id].codecs = dmic_component; 398 links[*id].num_codecs = ARRAY_SIZE(dmic_component); 399 links[*id].platforms = platform_component; 400 links[*id].num_platforms = ARRAY_SIZE(platform_component); 401 links[*id].ignore_suspend = 1; 402 links[*id].dpcm_capture = 1; 403 links[*id].no_pcm = 1; 404 405 (*id)++; 406 } 407 408 return 0; 409 } 410 411 static int create_hdmi_dai_links(struct device *dev, 412 struct snd_soc_dai_link *links, 413 struct snd_soc_dai_link_component *cpus, 414 int *id, int hdmi_num) 415 { 416 struct snd_soc_dai_link_component *idisp_components; 417 int i; 418 419 /* HDMI */ 420 if (hdmi_num <= 0) 421 return 0; 422 423 idisp_components = devm_kzalloc(dev, 424 sizeof(struct snd_soc_dai_link_component) * 425 hdmi_num, GFP_KERNEL); 426 if (!idisp_components) 427 goto devm_err; 428 429 for (i = 1; i <= hdmi_num; i++) { 430 links[*id].name = devm_kasprintf(dev, GFP_KERNEL, 431 "iDisp%d", i); 432 if (!links[*id].name) 433 goto devm_err; 434 435 links[*id].id = *id; 436 links[*id].cpus = &cpus[*id]; 437 links[*id].num_cpus = 1; 438 links[*id].cpus->dai_name = devm_kasprintf(dev, 439 GFP_KERNEL, 440 "iDisp%d Pin", 441 i); 442 if (!links[*id].cpus->dai_name) 443 goto devm_err; 444 445 idisp_components[i - 1].name = "ehdaudio0D2"; 446 idisp_components[i - 1].dai_name = devm_kasprintf(dev, 447 GFP_KERNEL, 448 "intel-hdmi-hifi%d", 449 i); 450 if (!idisp_components[i - 1].dai_name) 451 goto devm_err; 452 453 links[*id].codecs = &idisp_components[i - 1]; 454 links[*id].num_codecs = 1; 455 links[*id].platforms = platform_component; 456 links[*id].num_platforms = ARRAY_SIZE(platform_component); 457 links[*id].init = sof_hdmi_init; 458 links[*id].dpcm_playback = 1; 459 links[*id].no_pcm = 1; 460 461 (*id)++; 462 } 463 464 return 0; 465 466 devm_err: 467 return -ENOMEM; 468 } 469 470 static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev, 471 int ssp_codec, 472 int ssp_amp, 473 int dmic_be_num, 474 int hdmi_num) 475 { 476 struct snd_soc_dai_link_component *cpus; 477 struct snd_soc_dai_link *links; 478 int ret, id = 0, link_seq; 479 480 links = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link) * 481 sof_audio_card_cs42l42.num_links, GFP_KERNEL); 482 cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component) * 483 sof_audio_card_cs42l42.num_links, GFP_KERNEL); 484 if (!links || !cpus) 485 goto devm_err; 486 487 link_seq = (sof_cs42l42_quirk & SOF_CS42L42_DAILINK_MASK) >> SOF_CS42L42_DAILINK_SHIFT; 488 489 while (link_seq) { 490 int link_type = link_seq & 0x07; 491 492 switch (link_type) { 493 case LINK_HP: 494 ret = create_hp_codec_dai_links(dev, links, cpus, &id, ssp_codec); 495 if (ret < 0) { 496 dev_err(dev, "fail to create hp codec dai links, ret %d\n", 497 ret); 498 goto devm_err; 499 } 500 break; 501 case LINK_SPK: 502 ret = create_spk_amp_dai_links(dev, links, cpus, &id, ssp_amp); 503 if (ret < 0) { 504 dev_err(dev, "fail to create spk amp dai links, ret %d\n", 505 ret); 506 goto devm_err; 507 } 508 break; 509 case LINK_DMIC: 510 ret = create_dmic_dai_links(dev, links, cpus, &id, dmic_be_num); 511 if (ret < 0) { 512 dev_err(dev, "fail to create dmic dai links, ret %d\n", 513 ret); 514 goto devm_err; 515 } 516 break; 517 case LINK_HDMI: 518 ret = create_hdmi_dai_links(dev, links, cpus, &id, hdmi_num); 519 if (ret < 0) { 520 dev_err(dev, "fail to create hdmi dai links, ret %d\n", 521 ret); 522 goto devm_err; 523 } 524 break; 525 case LINK_NONE: 526 /* caught here if it's not used as terminator in macro */ 527 default: 528 dev_err(dev, "invalid link type %d\n", link_type); 529 goto devm_err; 530 } 531 532 link_seq >>= 3; 533 } 534 535 return links; 536 devm_err: 537 return NULL; 538 } 539 540 static int sof_audio_probe(struct platform_device *pdev) 541 { 542 struct snd_soc_dai_link *dai_links; 543 struct snd_soc_acpi_mach *mach; 544 struct sof_card_private *ctx; 545 int dmic_be_num, hdmi_num; 546 int ret, ssp_amp, ssp_codec; 547 548 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); 549 if (!ctx) 550 return -ENOMEM; 551 552 if (pdev->id_entry && pdev->id_entry->driver_data) 553 sof_cs42l42_quirk = (unsigned long)pdev->id_entry->driver_data; 554 555 mach = pdev->dev.platform_data; 556 557 if (soc_intel_is_glk()) { 558 dmic_be_num = 1; 559 hdmi_num = 3; 560 } else { 561 dmic_be_num = 2; 562 hdmi_num = (sof_cs42l42_quirk & SOF_CS42L42_NUM_HDMIDEV_MASK) >> 563 SOF_CS42L42_NUM_HDMIDEV_SHIFT; 564 /* default number of HDMI DAI's */ 565 if (!hdmi_num) 566 hdmi_num = 3; 567 } 568 569 dev_dbg(&pdev->dev, "sof_cs42l42_quirk = %lx\n", sof_cs42l42_quirk); 570 571 ssp_amp = (sof_cs42l42_quirk & SOF_CS42L42_SSP_AMP_MASK) >> 572 SOF_CS42L42_SSP_AMP_SHIFT; 573 574 ssp_codec = sof_cs42l42_quirk & SOF_CS42L42_SSP_CODEC_MASK; 575 576 /* compute number of dai links */ 577 sof_audio_card_cs42l42.num_links = 1 + dmic_be_num + hdmi_num; 578 579 if (sof_cs42l42_quirk & SOF_SPEAKER_AMP_PRESENT) 580 sof_audio_card_cs42l42.num_links++; 581 582 dai_links = sof_card_dai_links_create(&pdev->dev, ssp_codec, ssp_amp, 583 dmic_be_num, hdmi_num); 584 if (!dai_links) 585 return -ENOMEM; 586 587 sof_audio_card_cs42l42.dai_link = dai_links; 588 589 INIT_LIST_HEAD(&ctx->hdmi_pcm_list); 590 591 sof_audio_card_cs42l42.dev = &pdev->dev; 592 593 /* set platform name for each dailink */ 594 ret = snd_soc_fixup_dai_links_platform_name(&sof_audio_card_cs42l42, 595 mach->mach_params.platform); 596 if (ret) 597 return ret; 598 599 ctx->common_hdmi_codec_drv = mach->mach_params.common_hdmi_codec_drv; 600 601 snd_soc_card_set_drvdata(&sof_audio_card_cs42l42, ctx); 602 603 return devm_snd_soc_register_card(&pdev->dev, 604 &sof_audio_card_cs42l42); 605 } 606 607 static const struct platform_device_id board_ids[] = { 608 { 609 .name = "glk_cs4242_mx98357a", 610 .driver_data = (kernel_ulong_t)(SOF_CS42L42_SSP_CODEC(2) | 611 SOF_SPEAKER_AMP_PRESENT | 612 SOF_MAX98357A_SPEAKER_AMP_PRESENT | 613 SOF_CS42L42_SSP_AMP(1)) | 614 SOF_CS42L42_DAILINK(LINK_SPK, LINK_HP, LINK_DMIC, LINK_HDMI, LINK_NONE), 615 }, 616 { 617 .name = "jsl_cs4242_mx98360a", 618 .driver_data = (kernel_ulong_t)(SOF_CS42L42_SSP_CODEC(0) | 619 SOF_SPEAKER_AMP_PRESENT | 620 SOF_MAX98360A_SPEAKER_AMP_PRESENT | 621 SOF_CS42L42_SSP_AMP(1)) | 622 SOF_CS42L42_DAILINK(LINK_HP, LINK_DMIC, LINK_HDMI, LINK_SPK, LINK_NONE), 623 }, 624 { } 625 }; 626 MODULE_DEVICE_TABLE(platform, board_ids); 627 628 static struct platform_driver sof_audio = { 629 .probe = sof_audio_probe, 630 .driver = { 631 .name = "sof_cs42l42", 632 .pm = &snd_soc_pm_ops, 633 }, 634 .id_table = board_ids, 635 }; 636 module_platform_driver(sof_audio) 637 638 /* Module information */ 639 MODULE_DESCRIPTION("SOF Audio Machine driver for CS42L42"); 640 MODULE_AUTHOR("Brent Lu <brent.lu@intel.com>"); 641 MODULE_LICENSE("GPL"); 642 MODULE_IMPORT_NS(SND_SOC_INTEL_HDA_DSP_COMMON); 643 MODULE_IMPORT_NS(SND_SOC_INTEL_SOF_MAXIM_COMMON); 644