1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Rockchip machine ASoC driver for boards using MAX98357A/RT5514/DA7219 4 * 5 * Copyright (c) 2016, ROCKCHIP CORPORATION. All rights reserved. 6 */ 7 8 #include <linux/module.h> 9 #include <linux/platform_device.h> 10 #include <linux/slab.h> 11 #include <linux/gpio.h> 12 #include <linux/of_gpio.h> 13 #include <linux/delay.h> 14 #include <linux/spi/spi.h> 15 #include <linux/i2c.h> 16 #include <linux/input.h> 17 #include <sound/core.h> 18 #include <sound/jack.h> 19 #include <sound/pcm.h> 20 #include <sound/pcm_params.h> 21 #include <sound/soc.h> 22 #include "rockchip_i2s.h" 23 #include "../codecs/da7219.h" 24 #include "../codecs/rt5514.h" 25 26 #define DRV_NAME "rk3399-gru-sound" 27 28 #define SOUND_FS 256 29 30 static unsigned int dmic_wakeup_delay; 31 32 static struct snd_soc_jack rockchip_sound_jack; 33 34 /* Headset jack detection DAPM pins */ 35 static struct snd_soc_jack_pin rockchip_sound_jack_pins[] = { 36 { 37 .pin = "Headphones", 38 .mask = SND_JACK_HEADPHONE, 39 }, 40 { 41 .pin = "Headset Mic", 42 .mask = SND_JACK_MICROPHONE, 43 }, 44 { 45 .pin = "Line Out", 46 .mask = SND_JACK_LINEOUT, 47 }, 48 }; 49 50 static const struct snd_soc_dapm_widget rockchip_dapm_widgets[] = { 51 SND_SOC_DAPM_HP("Headphones", NULL), 52 SND_SOC_DAPM_SPK("Speakers", NULL), 53 SND_SOC_DAPM_MIC("Headset Mic", NULL), 54 SND_SOC_DAPM_LINE("Line Out", NULL), 55 SND_SOC_DAPM_MIC("Int Mic", NULL), 56 SND_SOC_DAPM_LINE("HDMI", NULL), 57 }; 58 59 static const struct snd_kcontrol_new rockchip_controls[] = { 60 SOC_DAPM_PIN_SWITCH("Headphones"), 61 SOC_DAPM_PIN_SWITCH("Speakers"), 62 SOC_DAPM_PIN_SWITCH("Headset Mic"), 63 SOC_DAPM_PIN_SWITCH("Line Out"), 64 SOC_DAPM_PIN_SWITCH("Int Mic"), 65 SOC_DAPM_PIN_SWITCH("HDMI"), 66 }; 67 68 static int rockchip_sound_max98357a_hw_params(struct snd_pcm_substream *substream, 69 struct snd_pcm_hw_params *params) 70 { 71 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 72 unsigned int mclk; 73 int ret; 74 75 mclk = params_rate(params) * SOUND_FS; 76 77 ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk, 0); 78 if (ret) { 79 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n", 80 __func__, mclk, ret); 81 return ret; 82 } 83 84 return 0; 85 } 86 87 static int rockchip_sound_rt5514_hw_params(struct snd_pcm_substream *substream, 88 struct snd_pcm_hw_params *params) 89 { 90 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 91 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 92 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 93 unsigned int mclk; 94 int ret; 95 96 mclk = params_rate(params) * SOUND_FS; 97 98 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 99 SND_SOC_CLOCK_OUT); 100 if (ret < 0) { 101 dev_err(rtd->card->dev, "Can't set cpu clock out %d\n", ret); 102 return ret; 103 } 104 105 ret = snd_soc_dai_set_sysclk(codec_dai, RT5514_SCLK_S_MCLK, 106 mclk, SND_SOC_CLOCK_IN); 107 if (ret) { 108 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n", 109 __func__, params_rate(params) * 512, ret); 110 return ret; 111 } 112 113 /* Wait for DMIC stable */ 114 msleep(dmic_wakeup_delay); 115 116 return 0; 117 } 118 119 static int rockchip_sound_da7219_hw_params(struct snd_pcm_substream *substream, 120 struct snd_pcm_hw_params *params) 121 { 122 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 123 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 124 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 125 int mclk, ret; 126 127 /* in bypass mode, the mclk has to be one of the frequencies below */ 128 switch (params_rate(params)) { 129 case 8000: 130 case 16000: 131 case 24000: 132 case 32000: 133 case 48000: 134 case 64000: 135 case 96000: 136 mclk = 12288000; 137 break; 138 case 11025: 139 case 22050: 140 case 44100: 141 case 88200: 142 mclk = 11289600; 143 break; 144 default: 145 return -EINVAL; 146 } 147 148 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 149 SND_SOC_CLOCK_OUT); 150 if (ret < 0) { 151 dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret); 152 return ret; 153 } 154 155 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 156 SND_SOC_CLOCK_IN); 157 if (ret < 0) { 158 dev_err(codec_dai->dev, "Can't set codec clock in %d\n", ret); 159 return ret; 160 } 161 162 ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0); 163 if (ret < 0) { 164 dev_err(codec_dai->dev, "Can't set pll sysclk mclk %d\n", ret); 165 return ret; 166 } 167 168 return 0; 169 } 170 171 static struct snd_soc_jack cdn_dp_card_jack; 172 173 static int rockchip_sound_cdndp_init(struct snd_soc_pcm_runtime *rtd) 174 { 175 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; 176 struct snd_soc_card *card = rtd->card; 177 int ret; 178 179 /* Enable jack detection. */ 180 ret = snd_soc_card_jack_new(card, "DP Jack", SND_JACK_LINEOUT, 181 &cdn_dp_card_jack); 182 if (ret) { 183 dev_err(card->dev, "Can't create DP Jack %d\n", ret); 184 return ret; 185 } 186 187 return snd_soc_component_set_jack(component, &cdn_dp_card_jack, NULL); 188 } 189 190 static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd) 191 { 192 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; 193 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 194 int ret; 195 196 /* We need default MCLK and PLL settings for the accessory detection */ 197 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 12288000, 198 SND_SOC_CLOCK_IN); 199 if (ret < 0) { 200 dev_err(codec_dai->dev, "Init can't set codec clock in %d\n", ret); 201 return ret; 202 } 203 204 ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0); 205 if (ret < 0) { 206 dev_err(codec_dai->dev, "Init can't set pll sysclk mclk %d\n", ret); 207 return ret; 208 } 209 210 /* Enable Headset and 4 Buttons Jack detection */ 211 ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack", 212 SND_JACK_HEADSET | SND_JACK_LINEOUT | 213 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 214 SND_JACK_BTN_2 | SND_JACK_BTN_3, 215 &rockchip_sound_jack, 216 rockchip_sound_jack_pins, 217 ARRAY_SIZE(rockchip_sound_jack_pins)); 218 219 if (ret) { 220 dev_err(rtd->card->dev, "New Headset Jack failed! (%d)\n", ret); 221 return ret; 222 } 223 224 snd_jack_set_key( 225 rockchip_sound_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 226 snd_jack_set_key( 227 rockchip_sound_jack.jack, SND_JACK_BTN_1, KEY_VOLUMEUP); 228 snd_jack_set_key( 229 rockchip_sound_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); 230 snd_jack_set_key( 231 rockchip_sound_jack.jack, SND_JACK_BTN_3, KEY_VOICECOMMAND); 232 233 snd_soc_component_set_jack(component, &rockchip_sound_jack, NULL); 234 235 return 0; 236 } 237 238 static int rockchip_sound_dmic_hw_params(struct snd_pcm_substream *substream, 239 struct snd_pcm_hw_params *params) 240 { 241 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 242 unsigned int mclk; 243 int ret; 244 245 mclk = params_rate(params) * SOUND_FS; 246 247 ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk, 0); 248 if (ret) { 249 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n", 250 __func__, mclk, ret); 251 return ret; 252 } 253 254 /* Wait for DMIC stable */ 255 msleep(dmic_wakeup_delay); 256 257 return 0; 258 } 259 260 static int rockchip_sound_startup(struct snd_pcm_substream *substream) 261 { 262 struct snd_pcm_runtime *runtime = substream->runtime; 263 264 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; 265 return snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, 266 8000, 96000); 267 } 268 269 static const struct snd_soc_ops rockchip_sound_max98357a_ops = { 270 .startup = rockchip_sound_startup, 271 .hw_params = rockchip_sound_max98357a_hw_params, 272 }; 273 274 static const struct snd_soc_ops rockchip_sound_rt5514_ops = { 275 .startup = rockchip_sound_startup, 276 .hw_params = rockchip_sound_rt5514_hw_params, 277 }; 278 279 static const struct snd_soc_ops rockchip_sound_da7219_ops = { 280 .startup = rockchip_sound_startup, 281 .hw_params = rockchip_sound_da7219_hw_params, 282 }; 283 284 static const struct snd_soc_ops rockchip_sound_dmic_ops = { 285 .startup = rockchip_sound_startup, 286 .hw_params = rockchip_sound_dmic_hw_params, 287 }; 288 289 static struct snd_soc_card rockchip_sound_card = { 290 .name = "rk3399-gru-sound", 291 .owner = THIS_MODULE, 292 .dapm_widgets = rockchip_dapm_widgets, 293 .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets), 294 .controls = rockchip_controls, 295 .num_controls = ARRAY_SIZE(rockchip_controls), 296 }; 297 298 enum { 299 DAILINK_CDNDP, 300 DAILINK_DA7219, 301 DAILINK_DMIC, 302 DAILINK_MAX98357A, 303 DAILINK_RT5514, 304 DAILINK_RT5514_DSP, 305 }; 306 307 SND_SOC_DAILINK_DEFS(cdndp, 308 DAILINK_COMP_ARRAY(COMP_EMPTY()), 309 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "spdif-hifi")), 310 DAILINK_COMP_ARRAY(COMP_EMPTY())); 311 312 SND_SOC_DAILINK_DEFS(da7219, 313 DAILINK_COMP_ARRAY(COMP_EMPTY()), 314 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "da7219-hifi")), 315 DAILINK_COMP_ARRAY(COMP_EMPTY())); 316 317 SND_SOC_DAILINK_DEFS(dmic, 318 DAILINK_COMP_ARRAY(COMP_EMPTY()), 319 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dmic-hifi")), 320 DAILINK_COMP_ARRAY(COMP_EMPTY())); 321 322 SND_SOC_DAILINK_DEFS(max98357a, 323 DAILINK_COMP_ARRAY(COMP_EMPTY()), 324 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")), 325 DAILINK_COMP_ARRAY(COMP_EMPTY())); 326 327 SND_SOC_DAILINK_DEFS(rt5514, 328 DAILINK_COMP_ARRAY(COMP_EMPTY()), 329 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5514-aif1")), 330 DAILINK_COMP_ARRAY(COMP_EMPTY())); 331 332 SND_SOC_DAILINK_DEFS(rt5514_dsp, 333 DAILINK_COMP_ARRAY(COMP_EMPTY()), 334 DAILINK_COMP_ARRAY(COMP_DUMMY()), 335 DAILINK_COMP_ARRAY(COMP_EMPTY())); 336 337 static const struct snd_soc_dai_link rockchip_dais[] = { 338 [DAILINK_CDNDP] = { 339 .name = "DP", 340 .stream_name = "DP PCM", 341 .init = rockchip_sound_cdndp_init, 342 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 343 SND_SOC_DAIFMT_CBS_CFS, 344 SND_SOC_DAILINK_REG(cdndp), 345 }, 346 [DAILINK_DA7219] = { 347 .name = "DA7219", 348 .stream_name = "DA7219 PCM", 349 .init = rockchip_sound_da7219_init, 350 .ops = &rockchip_sound_da7219_ops, 351 /* set da7219 as slave */ 352 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 353 SND_SOC_DAIFMT_CBS_CFS, 354 SND_SOC_DAILINK_REG(da7219), 355 }, 356 [DAILINK_DMIC] = { 357 .name = "DMIC", 358 .stream_name = "DMIC PCM", 359 .ops = &rockchip_sound_dmic_ops, 360 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 361 SND_SOC_DAIFMT_CBS_CFS, 362 SND_SOC_DAILINK_REG(dmic), 363 }, 364 [DAILINK_MAX98357A] = { 365 .name = "MAX98357A", 366 .stream_name = "MAX98357A PCM", 367 .ops = &rockchip_sound_max98357a_ops, 368 /* set max98357a as slave */ 369 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 370 SND_SOC_DAIFMT_CBS_CFS, 371 SND_SOC_DAILINK_REG(max98357a), 372 }, 373 [DAILINK_RT5514] = { 374 .name = "RT5514", 375 .stream_name = "RT5514 PCM", 376 .ops = &rockchip_sound_rt5514_ops, 377 /* set rt5514 as slave */ 378 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 379 SND_SOC_DAIFMT_CBS_CFS, 380 SND_SOC_DAILINK_REG(rt5514), 381 }, 382 /* RT5514 DSP for voice wakeup via spi bus */ 383 [DAILINK_RT5514_DSP] = { 384 .name = "RT5514 DSP", 385 .stream_name = "Wake on Voice", 386 SND_SOC_DAILINK_REG(rt5514_dsp), 387 }, 388 }; 389 390 static const struct snd_soc_dapm_route rockchip_sound_cdndp_routes[] = { 391 /* Output */ 392 {"HDMI", NULL, "TX"}, 393 }; 394 395 static const struct snd_soc_dapm_route rockchip_sound_da7219_routes[] = { 396 /* Output */ 397 {"Headphones", NULL, "HPL"}, 398 {"Headphones", NULL, "HPR"}, 399 400 /* Input */ 401 {"MIC", NULL, "Headset Mic"}, 402 }; 403 404 static const struct snd_soc_dapm_route rockchip_sound_dmic_routes[] = { 405 /* Input */ 406 {"DMic", NULL, "Int Mic"}, 407 }; 408 409 static const struct snd_soc_dapm_route rockchip_sound_max98357a_routes[] = { 410 /* Output */ 411 {"Speakers", NULL, "Speaker"}, 412 }; 413 414 static const struct snd_soc_dapm_route rockchip_sound_rt5514_routes[] = { 415 /* Input */ 416 {"DMIC1L", NULL, "Int Mic"}, 417 {"DMIC1R", NULL, "Int Mic"}, 418 }; 419 420 struct rockchip_sound_route { 421 const struct snd_soc_dapm_route *routes; 422 int num_routes; 423 }; 424 425 static const struct rockchip_sound_route rockchip_routes[] = { 426 [DAILINK_CDNDP] = { 427 .routes = rockchip_sound_cdndp_routes, 428 .num_routes = ARRAY_SIZE(rockchip_sound_cdndp_routes), 429 }, 430 [DAILINK_DA7219] = { 431 .routes = rockchip_sound_da7219_routes, 432 .num_routes = ARRAY_SIZE(rockchip_sound_da7219_routes), 433 }, 434 [DAILINK_DMIC] = { 435 .routes = rockchip_sound_dmic_routes, 436 .num_routes = ARRAY_SIZE(rockchip_sound_dmic_routes), 437 }, 438 [DAILINK_MAX98357A] = { 439 .routes = rockchip_sound_max98357a_routes, 440 .num_routes = ARRAY_SIZE(rockchip_sound_max98357a_routes), 441 }, 442 [DAILINK_RT5514] = { 443 .routes = rockchip_sound_rt5514_routes, 444 .num_routes = ARRAY_SIZE(rockchip_sound_rt5514_routes), 445 }, 446 [DAILINK_RT5514_DSP] = {}, 447 }; 448 449 struct dailink_match_data { 450 const char *compatible; 451 struct bus_type *bus_type; 452 }; 453 454 static const struct dailink_match_data dailink_match[] = { 455 [DAILINK_CDNDP] = { 456 .compatible = "rockchip,rk3399-cdn-dp", 457 }, 458 [DAILINK_DA7219] = { 459 .compatible = "dlg,da7219", 460 }, 461 [DAILINK_DMIC] = { 462 .compatible = "dmic-codec", 463 }, 464 [DAILINK_MAX98357A] = { 465 .compatible = "maxim,max98357a", 466 }, 467 [DAILINK_RT5514] = { 468 .compatible = "realtek,rt5514", 469 .bus_type = &i2c_bus_type, 470 }, 471 [DAILINK_RT5514_DSP] = { 472 .compatible = "realtek,rt5514", 473 .bus_type = &spi_bus_type, 474 }, 475 }; 476 477 static int rockchip_sound_codec_node_match(struct device_node *np_codec) 478 { 479 struct device *dev; 480 int i; 481 482 for (i = 0; i < ARRAY_SIZE(dailink_match); i++) { 483 if (!of_device_is_compatible(np_codec, 484 dailink_match[i].compatible)) 485 continue; 486 487 if (dailink_match[i].bus_type) { 488 dev = bus_find_device_by_of_node(dailink_match[i].bus_type, 489 np_codec); 490 if (!dev) 491 continue; 492 put_device(dev); 493 } 494 495 return i; 496 } 497 return -1; 498 } 499 500 static int rockchip_sound_of_parse_dais(struct device *dev, 501 struct snd_soc_card *card) 502 { 503 struct device_node *np_cpu, *np_cpu0, *np_cpu1; 504 struct device_node *np_codec; 505 struct snd_soc_dai_link *dai; 506 struct snd_soc_dapm_route *routes; 507 int i, index; 508 int num_routes; 509 510 card->dai_link = devm_kzalloc(dev, sizeof(rockchip_dais), 511 GFP_KERNEL); 512 if (!card->dai_link) 513 return -ENOMEM; 514 515 num_routes = 0; 516 for (i = 0; i < ARRAY_SIZE(rockchip_routes); i++) 517 num_routes += rockchip_routes[i].num_routes; 518 routes = devm_kcalloc(dev, num_routes, sizeof(*routes), 519 GFP_KERNEL); 520 if (!routes) 521 return -ENOMEM; 522 card->dapm_routes = routes; 523 524 np_cpu0 = of_parse_phandle(dev->of_node, "rockchip,cpu", 0); 525 np_cpu1 = of_parse_phandle(dev->of_node, "rockchip,cpu", 1); 526 527 card->num_dapm_routes = 0; 528 card->num_links = 0; 529 for (i = 0; i < ARRAY_SIZE(rockchip_dais); i++) { 530 np_codec = of_parse_phandle(dev->of_node, 531 "rockchip,codec", i); 532 if (!np_codec) 533 break; 534 535 if (!of_device_is_available(np_codec)) 536 continue; 537 538 index = rockchip_sound_codec_node_match(np_codec); 539 if (index < 0) 540 continue; 541 542 switch (index) { 543 case DAILINK_CDNDP: 544 np_cpu = np_cpu1; 545 break; 546 case DAILINK_RT5514_DSP: 547 np_cpu = np_codec; 548 break; 549 default: 550 np_cpu = np_cpu0; 551 break; 552 } 553 554 if (!np_cpu) { 555 dev_err(dev, "Missing 'rockchip,cpu' for %s\n", 556 rockchip_dais[index].name); 557 return -EINVAL; 558 } 559 560 dai = &card->dai_link[card->num_links++]; 561 *dai = rockchip_dais[index]; 562 563 if (!dai->codecs->name) 564 dai->codecs->of_node = np_codec; 565 dai->platforms->of_node = np_cpu; 566 dai->cpus->of_node = np_cpu; 567 568 if (card->num_dapm_routes + rockchip_routes[index].num_routes > 569 num_routes) { 570 dev_err(dev, "Too many routes\n"); 571 return -EINVAL; 572 } 573 574 memcpy(routes + card->num_dapm_routes, 575 rockchip_routes[index].routes, 576 rockchip_routes[index].num_routes * sizeof(*routes)); 577 card->num_dapm_routes += rockchip_routes[index].num_routes; 578 } 579 580 return 0; 581 } 582 583 static int rockchip_sound_probe(struct platform_device *pdev) 584 { 585 struct snd_soc_card *card = &rockchip_sound_card; 586 int ret; 587 588 ret = rockchip_sound_of_parse_dais(&pdev->dev, card); 589 if (ret < 0) { 590 dev_err(&pdev->dev, "Failed to parse dais: %d\n", ret); 591 return ret; 592 } 593 594 /* Set DMIC wakeup delay */ 595 ret = device_property_read_u32(&pdev->dev, "dmic-wakeup-delay-ms", 596 &dmic_wakeup_delay); 597 if (ret) { 598 dmic_wakeup_delay = 0; 599 dev_dbg(&pdev->dev, 600 "no optional property 'dmic-wakeup-delay-ms' found, default: no delay\n"); 601 } 602 603 card->dev = &pdev->dev; 604 return devm_snd_soc_register_card(&pdev->dev, card); 605 } 606 607 static const struct of_device_id rockchip_sound_of_match[] = { 608 { .compatible = "rockchip,rk3399-gru-sound", }, 609 {}, 610 }; 611 612 static struct platform_driver rockchip_sound_driver = { 613 .probe = rockchip_sound_probe, 614 .driver = { 615 .name = DRV_NAME, 616 .of_match_table = rockchip_sound_of_match, 617 #ifdef CONFIG_PM 618 .pm = &snd_soc_pm_ops, 619 #endif 620 }, 621 }; 622 623 module_platform_driver(rockchip_sound_driver); 624 625 MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>"); 626 MODULE_DESCRIPTION("Rockchip ASoC Machine Driver"); 627 MODULE_LICENSE("GPL v2"); 628 MODULE_ALIAS("platform:" DRV_NAME); 629 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match); 630