1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright(c) 2017-18 Intel Corporation. 3 4 /* 5 * Intel Kabylake I2S Machine Driver with MAX98357A & DA7219 Codecs 6 * 7 * Modified from: 8 * Intel Kabylake I2S Machine driver supporting MAXIM98927 and 9 * RT5663 codecs 10 */ 11 12 #include <linux/input.h> 13 #include <linux/module.h> 14 #include <linux/platform_device.h> 15 #include <sound/core.h> 16 #include <sound/jack.h> 17 #include <sound/pcm.h> 18 #include <sound/pcm_params.h> 19 #include <sound/soc.h> 20 #include "../../codecs/da7219.h" 21 #include "../../codecs/hdac_hdmi.h" 22 #include "../../codecs/da7219-aad.h" 23 24 #define KBL_DIALOG_CODEC_DAI "da7219-hifi" 25 #define KBL_MAXIM_CODEC_DAI "HiFi" 26 #define MAXIM_DEV0_NAME "MX98357A:00" 27 #define DUAL_CHANNEL 2 28 #define QUAD_CHANNEL 4 29 30 static struct snd_soc_card *kabylake_audio_card; 31 static struct snd_soc_jack skylake_hdmi[3]; 32 33 struct kbl_hdmi_pcm { 34 struct list_head head; 35 struct snd_soc_dai *codec_dai; 36 int device; 37 }; 38 39 struct kbl_codec_private { 40 struct snd_soc_jack kabylake_headset; 41 struct list_head hdmi_pcm_list; 42 }; 43 44 enum { 45 KBL_DPCM_AUDIO_PB = 0, 46 KBL_DPCM_AUDIO_CP, 47 KBL_DPCM_AUDIO_DMIC_CP, 48 KBL_DPCM_AUDIO_HDMI1_PB, 49 KBL_DPCM_AUDIO_HDMI2_PB, 50 KBL_DPCM_AUDIO_HDMI3_PB, 51 }; 52 53 static int platform_clock_control(struct snd_soc_dapm_widget *w, 54 struct snd_kcontrol *k, int event) 55 { 56 struct snd_soc_dapm_context *dapm = w->dapm; 57 struct snd_soc_card *card = dapm->card; 58 struct snd_soc_dai *codec_dai; 59 int ret = 0; 60 61 codec_dai = snd_soc_card_get_codec_dai(card, KBL_DIALOG_CODEC_DAI); 62 if (!codec_dai) { 63 dev_err(card->dev, "Codec dai not found; Unable to set/unset codec pll\n"); 64 return -EIO; 65 } 66 67 if (SND_SOC_DAPM_EVENT_OFF(event)) { 68 ret = snd_soc_dai_set_pll(codec_dai, 0, 69 DA7219_SYSCLK_MCLK, 0, 0); 70 if (ret) 71 dev_err(card->dev, "failed to stop PLL: %d\n", ret); 72 } else if (SND_SOC_DAPM_EVENT_ON(event)) { 73 ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_PLL_SRM, 74 0, DA7219_PLL_FREQ_OUT_98304); 75 if (ret) 76 dev_err(card->dev, "failed to start PLL: %d\n", ret); 77 } 78 79 return ret; 80 } 81 82 static const struct snd_kcontrol_new kabylake_controls[] = { 83 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 84 SOC_DAPM_PIN_SWITCH("Headset Mic"), 85 SOC_DAPM_PIN_SWITCH("Spk"), 86 }; 87 88 static const struct snd_soc_dapm_widget kabylake_widgets[] = { 89 SND_SOC_DAPM_HP("Headphone Jack", NULL), 90 SND_SOC_DAPM_MIC("Headset Mic", NULL), 91 SND_SOC_DAPM_SPK("Spk", NULL), 92 SND_SOC_DAPM_MIC("SoC DMIC", NULL), 93 SND_SOC_DAPM_SPK("DP", NULL), 94 SND_SOC_DAPM_SPK("HDMI", NULL), 95 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 96 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 97 SND_SOC_DAPM_POST_PMD), 98 }; 99 100 static const struct snd_soc_dapm_route kabylake_map[] = { 101 { "Headphone Jack", NULL, "HPL" }, 102 { "Headphone Jack", NULL, "HPR" }, 103 104 /* speaker */ 105 { "Spk", NULL, "Speaker" }, 106 107 /* other jacks */ 108 { "MIC", NULL, "Headset Mic" }, 109 { "DMic", NULL, "SoC DMIC" }, 110 111 { "HDMI", NULL, "hif5 Output" }, 112 { "DP", NULL, "hif6 Output" }, 113 114 /* CODEC BE connections */ 115 { "HiFi Playback", NULL, "ssp0 Tx" }, 116 { "ssp0 Tx", NULL, "codec0_out" }, 117 118 { "Playback", NULL, "ssp1 Tx" }, 119 { "ssp1 Tx", NULL, "codec1_out" }, 120 121 { "codec0_in", NULL, "ssp1 Rx" }, 122 { "ssp1 Rx", NULL, "Capture" }, 123 124 /* DMIC */ 125 { "dmic01_hifi", NULL, "DMIC01 Rx" }, 126 { "DMIC01 Rx", NULL, "DMIC AIF" }, 127 128 { "hifi1", NULL, "iDisp1 Tx" }, 129 { "iDisp1 Tx", NULL, "iDisp1_out" }, 130 { "hifi2", NULL, "iDisp2 Tx" }, 131 { "iDisp2 Tx", NULL, "iDisp2_out" }, 132 { "hifi3", NULL, "iDisp3 Tx"}, 133 { "iDisp3 Tx", NULL, "iDisp3_out"}, 134 135 { "Headphone Jack", NULL, "Platform Clock" }, 136 { "Headset Mic", NULL, "Platform Clock" }, 137 }; 138 139 static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, 140 struct snd_pcm_hw_params *params) 141 { 142 struct snd_interval *rate = hw_param_interval(params, 143 SNDRV_PCM_HW_PARAM_RATE); 144 struct snd_interval *channels = hw_param_interval(params, 145 SNDRV_PCM_HW_PARAM_CHANNELS); 146 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 147 148 /* The ADSP will convert the FE rate to 48k, stereo */ 149 rate->min = rate->max = 48000; 150 channels->min = channels->max = DUAL_CHANNEL; 151 152 /* set SSP to 24 bit */ 153 snd_mask_none(fmt); 154 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 155 156 return 0; 157 } 158 159 static int kabylake_da7219_codec_init(struct snd_soc_pcm_runtime *rtd) 160 { 161 struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card); 162 struct snd_soc_component *component = rtd->codec_dai->component; 163 struct snd_soc_dai *codec_dai = rtd->codec_dai; 164 struct snd_soc_jack *jack; 165 int ret; 166 167 /* Configure sysclk for codec */ 168 ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK, 24576000, 169 SND_SOC_CLOCK_IN); 170 if (ret) { 171 dev_err(rtd->dev, "can't set codec sysclk configuration\n"); 172 return ret; 173 } 174 175 /* 176 * Headset buttons map to the google Reference headset. 177 * These can be configured by userspace. 178 */ 179 ret = snd_soc_card_jack_new(kabylake_audio_card, "Headset Jack", 180 SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 | 181 SND_JACK_BTN_2 | SND_JACK_BTN_3 | SND_JACK_LINEOUT, 182 &ctx->kabylake_headset, NULL, 0); 183 if (ret) { 184 dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret); 185 return ret; 186 } 187 188 jack = &ctx->kabylake_headset; 189 190 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 191 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP); 192 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); 193 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND); 194 da7219_aad_jack_det(component, &ctx->kabylake_headset); 195 196 ret = snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC"); 197 if (ret) 198 dev_err(rtd->dev, "SoC DMIC - Ignore suspend failed %d\n", ret); 199 200 return ret; 201 } 202 203 static int kabylake_hdmi_init(struct snd_soc_pcm_runtime *rtd, int device) 204 { 205 struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card); 206 struct snd_soc_dai *dai = rtd->codec_dai; 207 struct kbl_hdmi_pcm *pcm; 208 209 pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL); 210 if (!pcm) 211 return -ENOMEM; 212 213 pcm->device = device; 214 pcm->codec_dai = dai; 215 216 list_add_tail(&pcm->head, &ctx->hdmi_pcm_list); 217 218 return 0; 219 } 220 221 static int kabylake_hdmi1_init(struct snd_soc_pcm_runtime *rtd) 222 { 223 return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI1_PB); 224 } 225 226 static int kabylake_hdmi2_init(struct snd_soc_pcm_runtime *rtd) 227 { 228 return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI2_PB); 229 } 230 231 static int kabylake_hdmi3_init(struct snd_soc_pcm_runtime *rtd) 232 { 233 return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI3_PB); 234 } 235 236 static int kabylake_da7219_fe_init(struct snd_soc_pcm_runtime *rtd) 237 { 238 struct snd_soc_dapm_context *dapm; 239 struct snd_soc_component *component = rtd->cpu_dai->component; 240 241 dapm = snd_soc_component_get_dapm(component); 242 snd_soc_dapm_ignore_suspend(dapm, "Reference Capture"); 243 244 return 0; 245 } 246 247 static const unsigned int rates[] = { 248 48000, 249 }; 250 251 static const struct snd_pcm_hw_constraint_list constraints_rates = { 252 .count = ARRAY_SIZE(rates), 253 .list = rates, 254 .mask = 0, 255 }; 256 257 static const unsigned int channels[] = { 258 DUAL_CHANNEL, 259 }; 260 261 static const struct snd_pcm_hw_constraint_list constraints_channels = { 262 .count = ARRAY_SIZE(channels), 263 .list = channels, 264 .mask = 0, 265 }; 266 267 static unsigned int channels_quad[] = { 268 QUAD_CHANNEL, 269 }; 270 271 static struct snd_pcm_hw_constraint_list constraints_channels_quad = { 272 .count = ARRAY_SIZE(channels_quad), 273 .list = channels_quad, 274 .mask = 0, 275 }; 276 277 static int kbl_fe_startup(struct snd_pcm_substream *substream) 278 { 279 struct snd_pcm_runtime *runtime = substream->runtime; 280 281 /* 282 * On this platform for PCM device we support, 283 * 48Khz 284 * stereo 285 * 16 bit audio 286 */ 287 288 runtime->hw.channels_max = DUAL_CHANNEL; 289 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 290 &constraints_channels); 291 292 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; 293 snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16); 294 295 snd_pcm_hw_constraint_list(runtime, 0, 296 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 297 298 return 0; 299 } 300 301 static const struct snd_soc_ops kabylake_da7219_fe_ops = { 302 .startup = kbl_fe_startup, 303 }; 304 305 static int kabylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd, 306 struct snd_pcm_hw_params *params) 307 { 308 struct snd_interval *channels = hw_param_interval(params, 309 SNDRV_PCM_HW_PARAM_CHANNELS); 310 311 /* 312 * set BE channel constraint as user FE channels 313 */ 314 315 if (params_channels(params) == 2) 316 channels->min = channels->max = 2; 317 else 318 channels->min = channels->max = 4; 319 320 return 0; 321 } 322 323 static int kabylake_dmic_startup(struct snd_pcm_substream *substream) 324 { 325 struct snd_pcm_runtime *runtime = substream->runtime; 326 327 runtime->hw.channels_min = runtime->hw.channels_max = QUAD_CHANNEL; 328 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 329 &constraints_channels_quad); 330 331 return snd_pcm_hw_constraint_list(substream->runtime, 0, 332 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 333 } 334 335 static struct snd_soc_ops kabylake_dmic_ops = { 336 .startup = kabylake_dmic_startup, 337 }; 338 339 static const unsigned int rates_16000[] = { 340 16000, 341 }; 342 343 static const struct snd_pcm_hw_constraint_list constraints_16000 = { 344 .count = ARRAY_SIZE(rates_16000), 345 .list = rates_16000, 346 }; 347 348 static const unsigned int ch_mono[] = { 349 1, 350 }; 351 352 /* kabylake digital audio interface glue - connects codec <--> CPU */ 353 static struct snd_soc_dai_link kabylake_dais[] = { 354 /* Front End DAI links */ 355 [KBL_DPCM_AUDIO_PB] = { 356 .name = "Kbl Audio Port", 357 .stream_name = "Audio", 358 .cpu_dai_name = "System Pin", 359 .platform_name = "0000:00:1f.3", 360 .dynamic = 1, 361 .codec_name = "snd-soc-dummy", 362 .codec_dai_name = "snd-soc-dummy-dai", 363 .nonatomic = 1, 364 .init = kabylake_da7219_fe_init, 365 .trigger = { 366 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 367 .dpcm_playback = 1, 368 .ops = &kabylake_da7219_fe_ops, 369 }, 370 [KBL_DPCM_AUDIO_CP] = { 371 .name = "Kbl Audio Capture Port", 372 .stream_name = "Audio Record", 373 .cpu_dai_name = "System Pin", 374 .platform_name = "0000:00:1f.3", 375 .dynamic = 1, 376 .codec_name = "snd-soc-dummy", 377 .codec_dai_name = "snd-soc-dummy-dai", 378 .nonatomic = 1, 379 .trigger = { 380 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 381 .dpcm_capture = 1, 382 .ops = &kabylake_da7219_fe_ops, 383 }, 384 [KBL_DPCM_AUDIO_DMIC_CP] = { 385 .name = "Kbl Audio DMIC cap", 386 .stream_name = "dmiccap", 387 .cpu_dai_name = "DMIC Pin", 388 .codec_name = "snd-soc-dummy", 389 .codec_dai_name = "snd-soc-dummy-dai", 390 .platform_name = "0000:00:1f.3", 391 .init = NULL, 392 .dpcm_capture = 1, 393 .nonatomic = 1, 394 .dynamic = 1, 395 .ops = &kabylake_dmic_ops, 396 }, 397 [KBL_DPCM_AUDIO_HDMI1_PB] = { 398 .name = "Kbl HDMI Port1", 399 .stream_name = "Hdmi1", 400 .cpu_dai_name = "HDMI1 Pin", 401 .codec_name = "snd-soc-dummy", 402 .codec_dai_name = "snd-soc-dummy-dai", 403 .platform_name = "0000:00:1f.3", 404 .dpcm_playback = 1, 405 .init = NULL, 406 .trigger = { 407 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 408 .nonatomic = 1, 409 .dynamic = 1, 410 }, 411 [KBL_DPCM_AUDIO_HDMI2_PB] = { 412 .name = "Kbl HDMI Port2", 413 .stream_name = "Hdmi2", 414 .cpu_dai_name = "HDMI2 Pin", 415 .codec_name = "snd-soc-dummy", 416 .codec_dai_name = "snd-soc-dummy-dai", 417 .platform_name = "0000:00:1f.3", 418 .dpcm_playback = 1, 419 .init = NULL, 420 .trigger = { 421 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 422 .nonatomic = 1, 423 .dynamic = 1, 424 }, 425 [KBL_DPCM_AUDIO_HDMI3_PB] = { 426 .name = "Kbl HDMI Port3", 427 .stream_name = "Hdmi3", 428 .cpu_dai_name = "HDMI3 Pin", 429 .codec_name = "snd-soc-dummy", 430 .codec_dai_name = "snd-soc-dummy-dai", 431 .platform_name = "0000:00:1f.3", 432 .trigger = { 433 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 434 .dpcm_playback = 1, 435 .init = NULL, 436 .nonatomic = 1, 437 .dynamic = 1, 438 }, 439 440 /* Back End DAI links */ 441 { 442 /* SSP0 - Codec */ 443 .name = "SSP0-Codec", 444 .id = 0, 445 .cpu_dai_name = "SSP0 Pin", 446 .platform_name = "0000:00:1f.3", 447 .no_pcm = 1, 448 .codec_name = MAXIM_DEV0_NAME, 449 .codec_dai_name = KBL_MAXIM_CODEC_DAI, 450 .dai_fmt = SND_SOC_DAIFMT_I2S | 451 SND_SOC_DAIFMT_NB_NF | 452 SND_SOC_DAIFMT_CBS_CFS, 453 .ignore_pmdown_time = 1, 454 .be_hw_params_fixup = kabylake_ssp_fixup, 455 .dpcm_playback = 1, 456 }, 457 { 458 /* SSP1 - Codec */ 459 .name = "SSP1-Codec", 460 .id = 1, 461 .cpu_dai_name = "SSP1 Pin", 462 .platform_name = "0000:00:1f.3", 463 .no_pcm = 1, 464 .codec_name = "i2c-DLGS7219:00", 465 .codec_dai_name = KBL_DIALOG_CODEC_DAI, 466 .init = kabylake_da7219_codec_init, 467 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 468 SND_SOC_DAIFMT_CBS_CFS, 469 .ignore_pmdown_time = 1, 470 .be_hw_params_fixup = kabylake_ssp_fixup, 471 .dpcm_playback = 1, 472 .dpcm_capture = 1, 473 }, 474 { 475 .name = "dmic01", 476 .id = 2, 477 .cpu_dai_name = "DMIC01 Pin", 478 .codec_name = "dmic-codec", 479 .codec_dai_name = "dmic-hifi", 480 .platform_name = "0000:00:1f.3", 481 .be_hw_params_fixup = kabylake_dmic_fixup, 482 .ignore_suspend = 1, 483 .dpcm_capture = 1, 484 .no_pcm = 1, 485 }, 486 { 487 .name = "iDisp1", 488 .id = 3, 489 .cpu_dai_name = "iDisp1 Pin", 490 .codec_name = "ehdaudio0D2", 491 .codec_dai_name = "intel-hdmi-hifi1", 492 .platform_name = "0000:00:1f.3", 493 .dpcm_playback = 1, 494 .init = kabylake_hdmi1_init, 495 .no_pcm = 1, 496 }, 497 { 498 .name = "iDisp2", 499 .id = 4, 500 .cpu_dai_name = "iDisp2 Pin", 501 .codec_name = "ehdaudio0D2", 502 .codec_dai_name = "intel-hdmi-hifi2", 503 .platform_name = "0000:00:1f.3", 504 .init = kabylake_hdmi2_init, 505 .dpcm_playback = 1, 506 .no_pcm = 1, 507 }, 508 { 509 .name = "iDisp3", 510 .id = 5, 511 .cpu_dai_name = "iDisp3 Pin", 512 .codec_name = "ehdaudio0D2", 513 .codec_dai_name = "intel-hdmi-hifi3", 514 .platform_name = "0000:00:1f.3", 515 .init = kabylake_hdmi3_init, 516 .dpcm_playback = 1, 517 .no_pcm = 1, 518 }, 519 }; 520 521 #define NAME_SIZE 32 522 static int kabylake_card_late_probe(struct snd_soc_card *card) 523 { 524 struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(card); 525 struct kbl_hdmi_pcm *pcm; 526 struct snd_soc_component *component = NULL; 527 int err, i = 0; 528 char jack_name[NAME_SIZE]; 529 530 list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) { 531 component = pcm->codec_dai->component; 532 snprintf(jack_name, sizeof(jack_name), 533 "HDMI/DP, pcm=%d Jack", pcm->device); 534 err = snd_soc_card_jack_new(card, jack_name, 535 SND_JACK_AVOUT, &skylake_hdmi[i], 536 NULL, 0); 537 538 if (err) 539 return err; 540 541 err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device, 542 &skylake_hdmi[i]); 543 if (err < 0) 544 return err; 545 546 i++; 547 548 } 549 550 if (!component) 551 return -EINVAL; 552 553 return hdac_hdmi_jack_port_init(component, &card->dapm); 554 } 555 556 /* kabylake audio machine driver for SPT + DA7219 */ 557 static struct snd_soc_card kabylake_audio_card_da7219_m98357a = { 558 .name = "kblda7219max", 559 .owner = THIS_MODULE, 560 .dai_link = kabylake_dais, 561 .num_links = ARRAY_SIZE(kabylake_dais), 562 .controls = kabylake_controls, 563 .num_controls = ARRAY_SIZE(kabylake_controls), 564 .dapm_widgets = kabylake_widgets, 565 .num_dapm_widgets = ARRAY_SIZE(kabylake_widgets), 566 .dapm_routes = kabylake_map, 567 .num_dapm_routes = ARRAY_SIZE(kabylake_map), 568 .fully_routed = true, 569 .late_probe = kabylake_card_late_probe, 570 }; 571 572 static int kabylake_audio_probe(struct platform_device *pdev) 573 { 574 struct kbl_codec_private *ctx; 575 576 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); 577 if (!ctx) 578 return -ENOMEM; 579 580 INIT_LIST_HEAD(&ctx->hdmi_pcm_list); 581 582 kabylake_audio_card = 583 (struct snd_soc_card *)pdev->id_entry->driver_data; 584 585 kabylake_audio_card->dev = &pdev->dev; 586 snd_soc_card_set_drvdata(kabylake_audio_card, ctx); 587 return devm_snd_soc_register_card(&pdev->dev, kabylake_audio_card); 588 } 589 590 static const struct platform_device_id kbl_board_ids[] = { 591 { 592 .name = "kbl_da7219_max98357a", 593 .driver_data = 594 (kernel_ulong_t)&kabylake_audio_card_da7219_m98357a, 595 }, 596 { } 597 }; 598 599 static struct platform_driver kabylake_audio = { 600 .probe = kabylake_audio_probe, 601 .driver = { 602 .name = "kbl_da7219_max98357a", 603 .pm = &snd_soc_pm_ops, 604 }, 605 .id_table = kbl_board_ids, 606 }; 607 608 module_platform_driver(kabylake_audio) 609 610 /* Module information */ 611 MODULE_DESCRIPTION("Audio Machine driver-DA7219 & MAX98357A in I2S mode"); 612 MODULE_AUTHOR("Naveen Manohar <naveen.m@intel.com>"); 613 MODULE_LICENSE("GPL v2"); 614 MODULE_ALIAS("platform:kbl_da7219_max98357a"); 615