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 "../skylake/skl.h" 23 #include "../../codecs/da7219-aad.h" 24 25 #define KBL_DIALOG_CODEC_DAI "da7219-hifi" 26 #define KBL_MAXIM_CODEC_DAI "HiFi" 27 #define MAXIM_DEV0_NAME "MX98357A:00" 28 #define DUAL_CHANNEL 2 29 #define QUAD_CHANNEL 4 30 31 static struct snd_soc_card *kabylake_audio_card; 32 static struct snd_soc_jack skylake_hdmi[3]; 33 34 struct kbl_hdmi_pcm { 35 struct list_head head; 36 struct snd_soc_dai *codec_dai; 37 int device; 38 }; 39 40 struct kbl_codec_private { 41 struct snd_soc_jack kabylake_headset; 42 struct list_head hdmi_pcm_list; 43 }; 44 45 enum { 46 KBL_DPCM_AUDIO_PB = 0, 47 KBL_DPCM_AUDIO_CP, 48 KBL_DPCM_AUDIO_DMIC_CP, 49 KBL_DPCM_AUDIO_HDMI1_PB, 50 KBL_DPCM_AUDIO_HDMI2_PB, 51 KBL_DPCM_AUDIO_HDMI3_PB, 52 }; 53 54 static int platform_clock_control(struct snd_soc_dapm_widget *w, 55 struct snd_kcontrol *k, int event) 56 { 57 struct snd_soc_dapm_context *dapm = w->dapm; 58 struct snd_soc_card *card = dapm->card; 59 struct snd_soc_dai *codec_dai; 60 int ret = 0; 61 62 codec_dai = snd_soc_card_get_codec_dai(card, KBL_DIALOG_CODEC_DAI); 63 if (!codec_dai) { 64 dev_err(card->dev, "Codec dai not found; Unable to set/unset codec pll\n"); 65 return -EIO; 66 } 67 68 if (SND_SOC_DAPM_EVENT_OFF(event)) { 69 ret = snd_soc_dai_set_pll(codec_dai, 0, 70 DA7219_SYSCLK_MCLK, 0, 0); 71 if (ret) 72 dev_err(card->dev, "failed to stop PLL: %d\n", ret); 73 } else if (SND_SOC_DAPM_EVENT_ON(event)) { 74 ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_PLL_SRM, 75 0, DA7219_PLL_FREQ_OUT_98304); 76 if (ret) 77 dev_err(card->dev, "failed to start PLL: %d\n", ret); 78 } 79 80 return ret; 81 } 82 83 static const struct snd_kcontrol_new kabylake_controls[] = { 84 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 85 SOC_DAPM_PIN_SWITCH("Headset Mic"), 86 SOC_DAPM_PIN_SWITCH("Spk"), 87 }; 88 89 static const struct snd_soc_dapm_widget kabylake_widgets[] = { 90 SND_SOC_DAPM_HP("Headphone Jack", NULL), 91 SND_SOC_DAPM_MIC("Headset Mic", NULL), 92 SND_SOC_DAPM_SPK("Spk", NULL), 93 SND_SOC_DAPM_MIC("SoC DMIC", NULL), 94 SND_SOC_DAPM_SPK("DP", NULL), 95 SND_SOC_DAPM_SPK("HDMI", NULL), 96 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 97 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 98 SND_SOC_DAPM_POST_PMD), 99 }; 100 101 static const struct snd_soc_dapm_route kabylake_map[] = { 102 { "Headphone Jack", NULL, "HPL" }, 103 { "Headphone Jack", NULL, "HPR" }, 104 105 /* speaker */ 106 { "Spk", NULL, "Speaker" }, 107 108 /* other jacks */ 109 { "MIC", NULL, "Headset Mic" }, 110 { "DMic", NULL, "SoC DMIC" }, 111 112 { "HDMI", NULL, "hif5 Output" }, 113 { "DP", NULL, "hif6 Output" }, 114 115 /* CODEC BE connections */ 116 { "HiFi Playback", NULL, "ssp0 Tx" }, 117 { "ssp0 Tx", NULL, "codec0_out" }, 118 119 { "Playback", NULL, "ssp1 Tx" }, 120 { "ssp1 Tx", NULL, "codec1_out" }, 121 122 { "codec0_in", NULL, "ssp1 Rx" }, 123 { "ssp1 Rx", NULL, "Capture" }, 124 125 /* DMIC */ 126 { "dmic01_hifi", NULL, "DMIC01 Rx" }, 127 { "DMIC01 Rx", NULL, "DMIC AIF" }, 128 129 { "hifi1", NULL, "iDisp1 Tx" }, 130 { "iDisp1 Tx", NULL, "iDisp1_out" }, 131 { "hifi2", NULL, "iDisp2 Tx" }, 132 { "iDisp2 Tx", NULL, "iDisp2_out" }, 133 { "hifi3", NULL, "iDisp3 Tx"}, 134 { "iDisp3 Tx", NULL, "iDisp3_out"}, 135 136 { "Headphone Jack", NULL, "Platform Clock" }, 137 { "Headset Mic", NULL, "Platform Clock" }, 138 }; 139 140 static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, 141 struct snd_pcm_hw_params *params) 142 { 143 struct snd_interval *rate = hw_param_interval(params, 144 SNDRV_PCM_HW_PARAM_RATE); 145 struct snd_interval *channels = hw_param_interval(params, 146 SNDRV_PCM_HW_PARAM_CHANNELS); 147 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 148 149 /* The ADSP will convert the FE rate to 48k, stereo */ 150 rate->min = rate->max = 48000; 151 channels->min = channels->max = DUAL_CHANNEL; 152 153 /* set SSP to 24 bit */ 154 snd_mask_none(fmt); 155 snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE); 156 157 return 0; 158 } 159 160 static int kabylake_da7219_codec_init(struct snd_soc_pcm_runtime *rtd) 161 { 162 struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card); 163 struct snd_soc_component *component = rtd->codec_dai->component; 164 struct snd_soc_dai *codec_dai = rtd->codec_dai; 165 struct snd_soc_jack *jack; 166 int ret; 167 168 /* Configure sysclk for codec */ 169 ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK, 24576000, 170 SND_SOC_CLOCK_IN); 171 if (ret) { 172 dev_err(rtd->dev, "can't set codec sysclk configuration\n"); 173 return ret; 174 } 175 176 /* 177 * Headset buttons map to the google Reference headset. 178 * These can be configured by userspace. 179 */ 180 ret = snd_soc_card_jack_new(kabylake_audio_card, "Headset Jack", 181 SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 | 182 SND_JACK_BTN_2 | SND_JACK_BTN_3 | SND_JACK_LINEOUT, 183 &ctx->kabylake_headset, NULL, 0); 184 if (ret) { 185 dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret); 186 return ret; 187 } 188 189 jack = &ctx->kabylake_headset; 190 191 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA); 192 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP); 193 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); 194 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND); 195 da7219_aad_jack_det(component, &ctx->kabylake_headset); 196 197 ret = snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC"); 198 if (ret) 199 dev_err(rtd->dev, "SoC DMIC - Ignore suspend failed %d\n", ret); 200 201 return ret; 202 } 203 204 static int kabylake_hdmi_init(struct snd_soc_pcm_runtime *rtd, int device) 205 { 206 struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card); 207 struct snd_soc_dai *dai = rtd->codec_dai; 208 struct kbl_hdmi_pcm *pcm; 209 210 pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL); 211 if (!pcm) 212 return -ENOMEM; 213 214 pcm->device = device; 215 pcm->codec_dai = dai; 216 217 list_add_tail(&pcm->head, &ctx->hdmi_pcm_list); 218 219 return 0; 220 } 221 222 static int kabylake_hdmi1_init(struct snd_soc_pcm_runtime *rtd) 223 { 224 return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI1_PB); 225 } 226 227 static int kabylake_hdmi2_init(struct snd_soc_pcm_runtime *rtd) 228 { 229 return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI2_PB); 230 } 231 232 static int kabylake_hdmi3_init(struct snd_soc_pcm_runtime *rtd) 233 { 234 return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI3_PB); 235 } 236 237 static int kabylake_da7219_fe_init(struct snd_soc_pcm_runtime *rtd) 238 { 239 struct snd_soc_dapm_context *dapm; 240 struct snd_soc_component *component = rtd->cpu_dai->component; 241 242 dapm = snd_soc_component_get_dapm(component); 243 snd_soc_dapm_ignore_suspend(dapm, "Reference Capture"); 244 245 return 0; 246 } 247 248 static const unsigned int rates[] = { 249 48000, 250 }; 251 252 static const struct snd_pcm_hw_constraint_list constraints_rates = { 253 .count = ARRAY_SIZE(rates), 254 .list = rates, 255 .mask = 0, 256 }; 257 258 static const unsigned int channels[] = { 259 DUAL_CHANNEL, 260 }; 261 262 static const struct snd_pcm_hw_constraint_list constraints_channels = { 263 .count = ARRAY_SIZE(channels), 264 .list = channels, 265 .mask = 0, 266 }; 267 268 static unsigned int channels_quad[] = { 269 QUAD_CHANNEL, 270 }; 271 272 static struct snd_pcm_hw_constraint_list constraints_channels_quad = { 273 .count = ARRAY_SIZE(channels_quad), 274 .list = channels_quad, 275 .mask = 0, 276 }; 277 278 static int kbl_fe_startup(struct snd_pcm_substream *substream) 279 { 280 struct snd_pcm_runtime *runtime = substream->runtime; 281 282 /* 283 * On this platform for PCM device we support, 284 * 48Khz 285 * stereo 286 * 16 bit audio 287 */ 288 289 runtime->hw.channels_max = DUAL_CHANNEL; 290 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 291 &constraints_channels); 292 293 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; 294 snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16); 295 296 snd_pcm_hw_constraint_list(runtime, 0, 297 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 298 299 return 0; 300 } 301 302 static const struct snd_soc_ops kabylake_da7219_fe_ops = { 303 .startup = kbl_fe_startup, 304 }; 305 306 static int kabylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd, 307 struct snd_pcm_hw_params *params) 308 { 309 struct snd_interval *channels = hw_param_interval(params, 310 SNDRV_PCM_HW_PARAM_CHANNELS); 311 312 /* 313 * set BE channel constraint as user FE channels 314 */ 315 316 if (params_channels(params) == 2) 317 channels->min = channels->max = 2; 318 else 319 channels->min = channels->max = 4; 320 321 return 0; 322 } 323 324 static int kabylake_dmic_startup(struct snd_pcm_substream *substream) 325 { 326 struct snd_pcm_runtime *runtime = substream->runtime; 327 328 runtime->hw.channels_min = runtime->hw.channels_max = QUAD_CHANNEL; 329 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 330 &constraints_channels_quad); 331 332 return snd_pcm_hw_constraint_list(substream->runtime, 0, 333 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 334 } 335 336 static struct snd_soc_ops kabylake_dmic_ops = { 337 .startup = kabylake_dmic_startup, 338 }; 339 340 static const unsigned int rates_16000[] = { 341 16000, 342 }; 343 344 static const struct snd_pcm_hw_constraint_list constraints_16000 = { 345 .count = ARRAY_SIZE(rates_16000), 346 .list = rates_16000, 347 }; 348 349 static const unsigned int ch_mono[] = { 350 1, 351 }; 352 353 /* kabylake digital audio interface glue - connects codec <--> CPU */ 354 static struct snd_soc_dai_link kabylake_dais[] = { 355 /* Front End DAI links */ 356 [KBL_DPCM_AUDIO_PB] = { 357 .name = "Kbl Audio Port", 358 .stream_name = "Audio", 359 .cpu_dai_name = "System Pin", 360 .platform_name = "0000:00:1f.3", 361 .dynamic = 1, 362 .codec_name = "snd-soc-dummy", 363 .codec_dai_name = "snd-soc-dummy-dai", 364 .nonatomic = 1, 365 .init = kabylake_da7219_fe_init, 366 .trigger = { 367 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 368 .dpcm_playback = 1, 369 .ops = &kabylake_da7219_fe_ops, 370 }, 371 [KBL_DPCM_AUDIO_CP] = { 372 .name = "Kbl Audio Capture Port", 373 .stream_name = "Audio Record", 374 .cpu_dai_name = "System Pin", 375 .platform_name = "0000:00:1f.3", 376 .dynamic = 1, 377 .codec_name = "snd-soc-dummy", 378 .codec_dai_name = "snd-soc-dummy-dai", 379 .nonatomic = 1, 380 .trigger = { 381 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 382 .dpcm_capture = 1, 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