1 /* 2 * Intel Skylake I2S Machine Driver for NAU88L25+SSM4567 3 * 4 * Copyright (C) 2015, Intel Corporation. All rights reserved. 5 * 6 * Modified from: 7 * Intel Skylake I2S Machine Driver for NAU88L25 and SSM4567 8 * 9 * Copyright (C) 2015, Intel Corporation. All rights reserved. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License version 13 * 2 as published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 */ 20 21 #include <linux/module.h> 22 #include <linux/platform_device.h> 23 #include <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/soc.h> 26 #include <sound/jack.h> 27 #include <sound/pcm_params.h> 28 #include "../../codecs/nau8825.h" 29 #include "../../codecs/hdac_hdmi.h" 30 31 #define SKL_NUVOTON_CODEC_DAI "nau8825-hifi" 32 #define SKL_SSM_CODEC_DAI "ssm4567-hifi" 33 34 static struct snd_soc_jack skylake_headset; 35 static struct snd_soc_card skylake_audio_card; 36 37 enum { 38 SKL_DPCM_AUDIO_PB = 0, 39 SKL_DPCM_AUDIO_CP, 40 SKL_DPCM_AUDIO_REF_CP, 41 SKL_DPCM_AUDIO_DMIC_CP, 42 SKL_DPCM_AUDIO_HDMI1_PB, 43 SKL_DPCM_AUDIO_HDMI2_PB, 44 SKL_DPCM_AUDIO_HDMI3_PB, 45 }; 46 47 static inline struct snd_soc_dai *skl_get_codec_dai(struct snd_soc_card *card) 48 { 49 struct snd_soc_pcm_runtime *rtd; 50 51 list_for_each_entry(rtd, &card->rtd_list, list) { 52 53 if (!strncmp(rtd->codec_dai->name, SKL_NUVOTON_CODEC_DAI, 54 strlen(SKL_NUVOTON_CODEC_DAI))) 55 return rtd->codec_dai; 56 } 57 58 return NULL; 59 } 60 61 static const struct snd_kcontrol_new skylake_controls[] = { 62 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 63 SOC_DAPM_PIN_SWITCH("Headset Mic"), 64 SOC_DAPM_PIN_SWITCH("Left Speaker"), 65 SOC_DAPM_PIN_SWITCH("Right Speaker"), 66 }; 67 68 static int platform_clock_control(struct snd_soc_dapm_widget *w, 69 struct snd_kcontrol *k, int event) 70 { 71 struct snd_soc_dapm_context *dapm = w->dapm; 72 struct snd_soc_card *card = dapm->card; 73 struct snd_soc_dai *codec_dai; 74 int ret; 75 76 codec_dai = skl_get_codec_dai(card); 77 if (!codec_dai) { 78 dev_err(card->dev, "Codec dai not found\n"); 79 return -EIO; 80 } 81 82 if (SND_SOC_DAPM_EVENT_ON(event)) { 83 ret = snd_soc_dai_set_sysclk(codec_dai, 84 NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN); 85 if (ret < 0) { 86 dev_err(card->dev, "set sysclk err = %d\n", ret); 87 return -EIO; 88 } 89 } else { 90 ret = snd_soc_dai_set_sysclk(codec_dai, 91 NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN); 92 if (ret < 0) { 93 dev_err(card->dev, "set sysclk err = %d\n", ret); 94 return -EIO; 95 } 96 } 97 return ret; 98 } 99 100 static const struct snd_soc_dapm_widget skylake_widgets[] = { 101 SND_SOC_DAPM_HP("Headphone Jack", NULL), 102 SND_SOC_DAPM_MIC("Headset Mic", NULL), 103 SND_SOC_DAPM_SPK("Left Speaker", NULL), 104 SND_SOC_DAPM_SPK("Right Speaker", NULL), 105 SND_SOC_DAPM_MIC("SoC DMIC", NULL), 106 SND_SOC_DAPM_SPK("DP", NULL), 107 SND_SOC_DAPM_SPK("HDMI", NULL), 108 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 109 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 110 SND_SOC_DAPM_POST_PMD), 111 }; 112 113 static const struct snd_soc_dapm_route skylake_map[] = { 114 /* HP jack connectors - unknown if we have jack detection */ 115 {"Headphone Jack", NULL, "HPOL"}, 116 {"Headphone Jack", NULL, "HPOR"}, 117 118 /* speaker */ 119 {"Left Speaker", NULL, "Left OUT"}, 120 {"Right Speaker", NULL, "Right OUT"}, 121 122 /* other jacks */ 123 {"MIC", NULL, "Headset Mic"}, 124 {"DMic", NULL, "SoC DMIC"}, 125 126 {"HDMI", NULL, "hif5 Output"}, 127 {"DP", NULL, "hif6 Output"}, 128 /* CODEC BE connections */ 129 { "Left Playback", NULL, "ssp0 Tx"}, 130 { "Right Playback", NULL, "ssp0 Tx"}, 131 { "ssp0 Tx", NULL, "codec0_out"}, 132 133 /* IV feedback path */ 134 { "codec0_lp_in", NULL, "ssp0 Rx"}, 135 { "ssp0 Rx", NULL, "Left Capture Sense" }, 136 { "ssp0 Rx", NULL, "Right Capture Sense" }, 137 138 { "Playback", NULL, "ssp1 Tx"}, 139 { "ssp1 Tx", NULL, "codec1_out"}, 140 141 { "codec0_in", NULL, "ssp1 Rx" }, 142 { "ssp1 Rx", NULL, "Capture" }, 143 144 /* DMIC */ 145 { "dmic01_hifi", NULL, "DMIC01 Rx" }, 146 { "DMIC01 Rx", NULL, "DMIC AIF" }, 147 148 { "hifi3", NULL, "iDisp3 Tx"}, 149 { "iDisp3 Tx", NULL, "iDisp3_out"}, 150 { "hifi2", NULL, "iDisp2 Tx"}, 151 { "iDisp2 Tx", NULL, "iDisp2_out"}, 152 { "hifi1", NULL, "iDisp1 Tx"}, 153 { "iDisp1 Tx", NULL, "iDisp1_out"}, 154 155 { "Headphone Jack", NULL, "Platform Clock" }, 156 { "Headset Mic", NULL, "Platform Clock" }, 157 }; 158 159 static struct snd_soc_codec_conf ssm4567_codec_conf[] = { 160 { 161 .dev_name = "i2c-INT343B:00", 162 .name_prefix = "Left", 163 }, 164 { 165 .dev_name = "i2c-INT343B:01", 166 .name_prefix = "Right", 167 }, 168 }; 169 170 static struct snd_soc_dai_link_component ssm4567_codec_components[] = { 171 { /* Left */ 172 .name = "i2c-INT343B:00", 173 .dai_name = SKL_SSM_CODEC_DAI, 174 }, 175 { /* Right */ 176 .name = "i2c-INT343B:01", 177 .dai_name = SKL_SSM_CODEC_DAI, 178 }, 179 }; 180 181 static int skylake_ssm4567_codec_init(struct snd_soc_pcm_runtime *rtd) 182 { 183 int ret; 184 185 /* Slot 1 for left */ 186 ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[0], 0x01, 0x01, 2, 48); 187 if (ret < 0) 188 return ret; 189 190 /* Slot 2 for right */ 191 ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[1], 0x02, 0x02, 2, 48); 192 if (ret < 0) 193 return ret; 194 195 return ret; 196 } 197 198 static int skylake_nau8825_codec_init(struct snd_soc_pcm_runtime *rtd) 199 { 200 int ret; 201 struct snd_soc_codec *codec = rtd->codec; 202 203 /* 204 * 4 buttons here map to the google Reference headset 205 * The use of these buttons can be decided by the user space. 206 */ 207 ret = snd_soc_card_jack_new(&skylake_audio_card, "Headset Jack", 208 SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 | 209 SND_JACK_BTN_2 | SND_JACK_BTN_3, &skylake_headset, 210 NULL, 0); 211 if (ret) { 212 dev_err(rtd->dev, "Headset Jack creation failed %d\n", ret); 213 return ret; 214 } 215 216 nau8825_enable_jack_detect(codec, &skylake_headset); 217 218 snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC"); 219 220 return ret; 221 } 222 223 static int skylake_hdmi1_init(struct snd_soc_pcm_runtime *rtd) 224 { 225 struct snd_soc_dai *dai = rtd->codec_dai; 226 227 return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI1_PB); 228 } 229 230 static int skylake_hdmi2_init(struct snd_soc_pcm_runtime *rtd) 231 { 232 struct snd_soc_dai *dai = rtd->codec_dai; 233 234 return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI2_PB); 235 } 236 237 238 static int skylake_hdmi3_init(struct snd_soc_pcm_runtime *rtd) 239 { 240 struct snd_soc_dai *dai = rtd->codec_dai; 241 242 return hdac_hdmi_jack_init(dai, SKL_DPCM_AUDIO_HDMI3_PB); 243 } 244 245 static int skylake_nau8825_fe_init(struct snd_soc_pcm_runtime *rtd) 246 { 247 struct snd_soc_dapm_context *dapm; 248 struct snd_soc_component *component = rtd->cpu_dai->component; 249 250 dapm = snd_soc_component_get_dapm(component); 251 snd_soc_dapm_ignore_suspend(dapm, "Reference Capture"); 252 253 return 0; 254 } 255 256 static unsigned int rates[] = { 257 48000, 258 }; 259 260 static struct snd_pcm_hw_constraint_list constraints_rates = { 261 .count = ARRAY_SIZE(rates), 262 .list = rates, 263 .mask = 0, 264 }; 265 266 static unsigned int channels[] = { 267 2, 268 }; 269 270 static struct snd_pcm_hw_constraint_list constraints_channels = { 271 .count = ARRAY_SIZE(channels), 272 .list = channels, 273 .mask = 0, 274 }; 275 276 static int skl_fe_startup(struct snd_pcm_substream *substream) 277 { 278 struct snd_pcm_runtime *runtime = substream->runtime; 279 280 /* 281 * on this platform for PCM device we support, 282 * 48Khz 283 * stereo 284 * 16 bit audio 285 */ 286 287 runtime->hw.channels_max = 2; 288 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 289 &constraints_channels); 290 291 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; 292 snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16); 293 294 snd_pcm_hw_constraint_list(runtime, 0, 295 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 296 297 return 0; 298 } 299 300 static const struct snd_soc_ops skylake_nau8825_fe_ops = { 301 .startup = skl_fe_startup, 302 }; 303 304 static int skylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, 305 struct snd_pcm_hw_params *params) 306 { 307 struct snd_interval *rate = hw_param_interval(params, 308 SNDRV_PCM_HW_PARAM_RATE); 309 struct snd_interval *channels = hw_param_interval(params, 310 SNDRV_PCM_HW_PARAM_CHANNELS); 311 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 312 313 /* The ADSP will covert the FE rate to 48k, stereo */ 314 rate->min = rate->max = 48000; 315 channels->min = channels->max = 2; 316 317 /* set SSP0 to 24 bit */ 318 snd_mask_none(fmt); 319 snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE); 320 return 0; 321 } 322 323 static int skylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd, 324 struct snd_pcm_hw_params *params) 325 { 326 struct snd_interval *channels = hw_param_interval(params, 327 SNDRV_PCM_HW_PARAM_CHANNELS); 328 if (params_channels(params) == 2) 329 channels->min = channels->max = 2; 330 else 331 channels->min = channels->max = 4; 332 333 return 0; 334 } 335 336 static int skylake_nau8825_hw_params(struct snd_pcm_substream *substream, 337 struct snd_pcm_hw_params *params) 338 { 339 struct snd_soc_pcm_runtime *rtd = substream->private_data; 340 struct snd_soc_dai *codec_dai = rtd->codec_dai; 341 int ret; 342 343 ret = snd_soc_dai_set_sysclk(codec_dai, 344 NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN); 345 346 if (ret < 0) 347 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret); 348 349 return ret; 350 } 351 352 static struct snd_soc_ops skylake_nau8825_ops = { 353 .hw_params = skylake_nau8825_hw_params, 354 }; 355 356 static unsigned int channels_dmic[] = { 357 2, 4, 358 }; 359 360 static struct snd_pcm_hw_constraint_list constraints_dmic_channels = { 361 .count = ARRAY_SIZE(channels_dmic), 362 .list = channels_dmic, 363 .mask = 0, 364 }; 365 366 static int skylake_dmic_startup(struct snd_pcm_substream *substream) 367 { 368 struct snd_pcm_runtime *runtime = substream->runtime; 369 370 runtime->hw.channels_max = 4; 371 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 372 &constraints_dmic_channels); 373 374 return snd_pcm_hw_constraint_list(substream->runtime, 0, 375 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 376 } 377 378 static struct snd_soc_ops skylake_dmic_ops = { 379 .startup = skylake_dmic_startup, 380 }; 381 382 static unsigned int rates_16000[] = { 383 16000, 384 }; 385 386 static struct snd_pcm_hw_constraint_list constraints_16000 = { 387 .count = ARRAY_SIZE(rates_16000), 388 .list = rates_16000, 389 }; 390 391 static int skylake_refcap_startup(struct snd_pcm_substream *substream) 392 { 393 return snd_pcm_hw_constraint_list(substream->runtime, 0, 394 SNDRV_PCM_HW_PARAM_RATE, 395 &constraints_16000); 396 } 397 398 static struct snd_soc_ops skylaye_refcap_ops = { 399 .startup = skylake_refcap_startup, 400 }; 401 402 /* skylake digital audio interface glue - connects codec <--> CPU */ 403 static struct snd_soc_dai_link skylake_dais[] = { 404 /* Front End DAI links */ 405 [SKL_DPCM_AUDIO_PB] = { 406 .name = "Skl Audio Port", 407 .stream_name = "Audio", 408 .cpu_dai_name = "System Pin", 409 .platform_name = "0000:00:1f.3", 410 .dynamic = 1, 411 .codec_name = "snd-soc-dummy", 412 .codec_dai_name = "snd-soc-dummy-dai", 413 .nonatomic = 1, 414 .init = skylake_nau8825_fe_init, 415 .trigger = { 416 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 417 .dpcm_playback = 1, 418 .ops = &skylake_nau8825_fe_ops, 419 }, 420 [SKL_DPCM_AUDIO_CP] = { 421 .name = "Skl Audio Capture Port", 422 .stream_name = "Audio Record", 423 .cpu_dai_name = "System Pin", 424 .platform_name = "0000:00:1f.3", 425 .dynamic = 1, 426 .codec_name = "snd-soc-dummy", 427 .codec_dai_name = "snd-soc-dummy-dai", 428 .nonatomic = 1, 429 .trigger = { 430 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 431 .dpcm_capture = 1, 432 .ops = &skylake_nau8825_fe_ops, 433 }, 434 [SKL_DPCM_AUDIO_REF_CP] = { 435 .name = "Skl Audio Reference cap", 436 .stream_name = "Wake on Voice", 437 .cpu_dai_name = "Reference Pin", 438 .codec_name = "snd-soc-dummy", 439 .codec_dai_name = "snd-soc-dummy-dai", 440 .platform_name = "0000:00:1f.3", 441 .init = NULL, 442 .dpcm_capture = 1, 443 .ignore_suspend = 1, 444 .nonatomic = 1, 445 .dynamic = 1, 446 .ops = &skylaye_refcap_ops, 447 }, 448 [SKL_DPCM_AUDIO_DMIC_CP] = { 449 .name = "Skl Audio DMIC cap", 450 .stream_name = "dmiccap", 451 .cpu_dai_name = "DMIC Pin", 452 .codec_name = "snd-soc-dummy", 453 .codec_dai_name = "snd-soc-dummy-dai", 454 .platform_name = "0000:00:1f.3", 455 .init = NULL, 456 .dpcm_capture = 1, 457 .nonatomic = 1, 458 .dynamic = 1, 459 .ops = &skylake_dmic_ops, 460 }, 461 [SKL_DPCM_AUDIO_HDMI1_PB] = { 462 .name = "Skl HDMI Port1", 463 .stream_name = "Hdmi1", 464 .cpu_dai_name = "HDMI1 Pin", 465 .codec_name = "snd-soc-dummy", 466 .codec_dai_name = "snd-soc-dummy-dai", 467 .platform_name = "0000:00:1f.3", 468 .dpcm_playback = 1, 469 .init = NULL, 470 .trigger = { 471 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 472 .nonatomic = 1, 473 .dynamic = 1, 474 }, 475 [SKL_DPCM_AUDIO_HDMI2_PB] = { 476 .name = "Skl HDMI Port2", 477 .stream_name = "Hdmi2", 478 .cpu_dai_name = "HDMI2 Pin", 479 .codec_name = "snd-soc-dummy", 480 .codec_dai_name = "snd-soc-dummy-dai", 481 .platform_name = "0000:00:1f.3", 482 .dpcm_playback = 1, 483 .init = NULL, 484 .trigger = { 485 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 486 .nonatomic = 1, 487 .dynamic = 1, 488 }, 489 [SKL_DPCM_AUDIO_HDMI3_PB] = { 490 .name = "Skl HDMI Port3", 491 .stream_name = "Hdmi3", 492 .cpu_dai_name = "HDMI3 Pin", 493 .codec_name = "snd-soc-dummy", 494 .codec_dai_name = "snd-soc-dummy-dai", 495 .platform_name = "0000:00:1f.3", 496 .trigger = { 497 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 498 .dpcm_playback = 1, 499 .init = NULL, 500 .nonatomic = 1, 501 .dynamic = 1, 502 }, 503 504 /* Back End DAI links */ 505 { 506 /* SSP0 - Codec */ 507 .name = "SSP0-Codec", 508 .be_id = 0, 509 .cpu_dai_name = "SSP0 Pin", 510 .platform_name = "0000:00:1f.3", 511 .no_pcm = 1, 512 .codecs = ssm4567_codec_components, 513 .num_codecs = ARRAY_SIZE(ssm4567_codec_components), 514 .dai_fmt = SND_SOC_DAIFMT_DSP_A | 515 SND_SOC_DAIFMT_IB_NF | 516 SND_SOC_DAIFMT_CBS_CFS, 517 .init = skylake_ssm4567_codec_init, 518 .ignore_pmdown_time = 1, 519 .be_hw_params_fixup = skylake_ssp_fixup, 520 .dpcm_playback = 1, 521 .dpcm_capture = 1, 522 }, 523 { 524 /* SSP1 - Codec */ 525 .name = "SSP1-Codec", 526 .be_id = 1, 527 .cpu_dai_name = "SSP1 Pin", 528 .platform_name = "0000:00:1f.3", 529 .no_pcm = 1, 530 .codec_name = "i2c-10508825:00", 531 .codec_dai_name = SKL_NUVOTON_CODEC_DAI, 532 .init = skylake_nau8825_codec_init, 533 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 534 SND_SOC_DAIFMT_CBS_CFS, 535 .ignore_pmdown_time = 1, 536 .be_hw_params_fixup = skylake_ssp_fixup, 537 .ops = &skylake_nau8825_ops, 538 .dpcm_playback = 1, 539 .dpcm_capture = 1, 540 }, 541 { 542 .name = "dmic01", 543 .be_id = 2, 544 .cpu_dai_name = "DMIC01 Pin", 545 .codec_name = "dmic-codec", 546 .codec_dai_name = "dmic-hifi", 547 .platform_name = "0000:00:1f.3", 548 .ignore_suspend = 1, 549 .be_hw_params_fixup = skylake_dmic_fixup, 550 .dpcm_capture = 1, 551 .no_pcm = 1, 552 }, 553 { 554 .name = "iDisp1", 555 .be_id = 3, 556 .cpu_dai_name = "iDisp1 Pin", 557 .codec_name = "ehdaudio0D2", 558 .codec_dai_name = "intel-hdmi-hifi1", 559 .platform_name = "0000:00:1f.3", 560 .dpcm_playback = 1, 561 .init = skylake_hdmi1_init, 562 .no_pcm = 1, 563 }, 564 { 565 .name = "iDisp2", 566 .be_id = 4, 567 .cpu_dai_name = "iDisp2 Pin", 568 .codec_name = "ehdaudio0D2", 569 .codec_dai_name = "intel-hdmi-hifi2", 570 .platform_name = "0000:00:1f.3", 571 .init = skylake_hdmi2_init, 572 .dpcm_playback = 1, 573 .no_pcm = 1, 574 }, 575 { 576 .name = "iDisp3", 577 .be_id = 5, 578 .cpu_dai_name = "iDisp3 Pin", 579 .codec_name = "ehdaudio0D2", 580 .codec_dai_name = "intel-hdmi-hifi3", 581 .platform_name = "0000:00:1f.3", 582 .init = skylake_hdmi3_init, 583 .dpcm_playback = 1, 584 .no_pcm = 1, 585 }, 586 }; 587 588 /* skylake audio machine driver for SPT + NAU88L25 */ 589 static struct snd_soc_card skylake_audio_card = { 590 .name = "sklnau8825adi", 591 .owner = THIS_MODULE, 592 .dai_link = skylake_dais, 593 .num_links = ARRAY_SIZE(skylake_dais), 594 .controls = skylake_controls, 595 .num_controls = ARRAY_SIZE(skylake_controls), 596 .dapm_widgets = skylake_widgets, 597 .num_dapm_widgets = ARRAY_SIZE(skylake_widgets), 598 .dapm_routes = skylake_map, 599 .num_dapm_routes = ARRAY_SIZE(skylake_map), 600 .codec_conf = ssm4567_codec_conf, 601 .num_configs = ARRAY_SIZE(ssm4567_codec_conf), 602 .fully_routed = true, 603 }; 604 605 static int skylake_audio_probe(struct platform_device *pdev) 606 { 607 skylake_audio_card.dev = &pdev->dev; 608 609 return devm_snd_soc_register_card(&pdev->dev, &skylake_audio_card); 610 } 611 612 static struct platform_driver skylake_audio = { 613 .probe = skylake_audio_probe, 614 .driver = { 615 .name = "skl_nau88l25_ssm4567_i2s", 616 .pm = &snd_soc_pm_ops, 617 }, 618 }; 619 620 module_platform_driver(skylake_audio) 621 622 /* Module information */ 623 MODULE_AUTHOR("Conrad Cooke <conrad.cooke@intel.com>"); 624 MODULE_AUTHOR("Harsha Priya <harshapriya.n@intel.com>"); 625 MODULE_AUTHOR("Naveen M <naveen.m@intel.com>"); 626 MODULE_AUTHOR("Sathya Prakash M R <sathya.prakash.m.r@intel.com>"); 627 MODULE_AUTHOR("Yong Zhi <yong.zhi@intel.com>"); 628 MODULE_DESCRIPTION("Intel Audio Machine driver for SKL with NAU88L25 and SSM4567 in I2S Mode"); 629 MODULE_LICENSE("GPL v2"); 630 MODULE_ALIAS("platform:skl_nau88l25_ssm4567_i2s"); 631