sound/soc/rockchip/rk3399_gru_sound.c

   1 /*
   2  * Rockchip machine ASoC driver for boards using MAX98357A/RT5514/DA7219
   3  *
   4  * Copyright (c) 2016, ROCKCHIP CORPORATION.  All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/slab.h>
  22 #include <linux/gpio.h>
  23 #include <linux/of_gpio.h>
  24 #include <linux/delay.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/i2c.h>
  27 #include <linux/input.h>
  28 #include <sound/core.h>
  29 #include <sound/jack.h>
  30 #include <sound/pcm.h>
  31 #include <sound/pcm_params.h>
  32 #include <sound/soc.h>
  33 #include "rockchip_i2s.h"
  34 #include "../codecs/da7219.h"
  35 #include "../codecs/da7219-aad.h"
  36 #include "../codecs/rt5514.h"
  37
  38 #define DRV_NAME "rk3399-gru-sound"
  39
  40 #define SOUND_FS        256
  41
  42 static unsigned int dmic_wakeup_delay;
  43
  44 static struct snd_soc_jack rockchip_sound_jack;
  45
  46 static const struct snd_soc_dapm_widget rockchip_dapm_widgets[] = {
  47         SND_SOC_DAPM_HP("Headphones", NULL),
  48         SND_SOC_DAPM_SPK("Speakers", NULL),
  49         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  50         SND_SOC_DAPM_MIC("Int Mic", NULL),
  51         SND_SOC_DAPM_LINE("HDMI", NULL),
  52 };
  53
  54 static const struct snd_kcontrol_new rockchip_controls[] = {
  55         SOC_DAPM_PIN_SWITCH("Headphones"),
  56         SOC_DAPM_PIN_SWITCH("Speakers"),
  57         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  58         SOC_DAPM_PIN_SWITCH("Int Mic"),
  59         SOC_DAPM_PIN_SWITCH("HDMI"),
  60 };
  61
  62 static int rockchip_sound_max98357a_hw_params(struct snd_pcm_substream *substream,
  63                              struct snd_pcm_hw_params *params)
  64 {
  65         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  66         unsigned int mclk;
  67         int ret;
  68
  69         /* max98357a supports these sample rates */
  70         switch (params_rate(params)) {
  71         case 8000:
  72         case 16000:
  73         case 48000:
  74         case 96000:
  75                 mclk = params_rate(params) * SOUND_FS;
  76                 break;
  77         default:
  78                 dev_err(rtd->card->dev, "%s() doesn't support this sample rate: %d\n",
  79                                 __func__, params_rate(params));
  80                 return -EINVAL;
  81         }
  82
  83         ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, 0);
  84         if (ret) {
  85                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
  86                                 __func__, mclk, ret);
  87                 return ret;
  88         }
  89
  90         return 0;
  91 }
  92
  93 static int rockchip_sound_rt5514_hw_params(struct snd_pcm_substream *substream,
  94                              struct snd_pcm_hw_params *params)
  95 {
  96         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  97         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  98         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  99         unsigned int mclk;
 100         int ret;
 101
 102         mclk = params_rate(params) * SOUND_FS;
 103
 104         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 105                                      SND_SOC_CLOCK_OUT);
 106         if (ret < 0) {
 107                 dev_err(rtd->card->dev, "Can't set cpu clock out %d\n", ret);
 108                 return ret;
 109         }
 110
 111         ret = snd_soc_dai_set_sysclk(codec_dai, RT5514_SCLK_S_MCLK,
 112                                      mclk, SND_SOC_CLOCK_IN);
 113         if (ret) {
 114                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
 115                                 __func__, params_rate(params) * 512, ret);
 116                 return ret;
 117         }
 118
 119         /* Wait for DMIC stable */
 120         msleep(dmic_wakeup_delay);
 121
 122         return 0;
 123 }
 124
 125 static int rockchip_sound_da7219_hw_params(struct snd_pcm_substream *substream,
 126                              struct snd_pcm_hw_params *params)
 127 {
 128         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 129         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 130         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 131         int mclk, ret;
 132
 133         /* in bypass mode, the mclk has to be one of the frequencies below */
 134         switch (params_rate(params)) {
 135         case 8000:
 136         case 16000:
 137         case 24000:
 138         case 32000:
 139         case 48000:
 140         case 64000:
 141         case 96000:
 142                 mclk = 12288000;
 143                 break;
 144         case 11025:
 145         case 22050:
 146         case 44100:
 147         case 88200:
 148                 mclk = 11289600;
 149                 break;
 150         default:
 151                 return -EINVAL;
 152         }
 153
 154         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 155                                      SND_SOC_CLOCK_OUT);
 156         if (ret < 0) {
 157                 dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret);
 158                 return ret;
 159         }
 160
 161         ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 162                                      SND_SOC_CLOCK_IN);
 163         if (ret < 0) {
 164                 dev_err(codec_dai->dev, "Can't set codec clock in %d\n", ret);
 165                 return ret;
 166         }
 167
 168         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
 169         if (ret < 0) {
 170                 dev_err(codec_dai->dev, "Can't set pll sysclk mclk %d\n", ret);
 171                 return ret;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
 178 {
 179         struct snd_soc_codec *codec = rtd->codec_dais[0]->codec;
 180         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 181         int ret;
 182
 183         /* We need default MCLK and PLL settings for the accessory detection */
 184         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 12288000,
 185                                      SND_SOC_CLOCK_IN);
 186         if (ret < 0) {
 187                 dev_err(codec_dai->dev, "Init can't set codec clock in %d\n", ret);
 188                 return ret;
 189         }
 190
 191         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
 192         if (ret < 0) {
 193                 dev_err(codec_dai->dev, "Init can't set pll sysclk mclk %d\n", ret);
 194                 return ret;
 195         }
 196
 197         /* Enable Headset and 4 Buttons Jack detection */
 198         ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
 199                                     SND_JACK_HEADSET | SND_JACK_LINEOUT |
 200                                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 201                                     SND_JACK_BTN_2 | SND_JACK_BTN_3,
 202                                     &rockchip_sound_jack, NULL, 0);
 203
 204         if (ret) {
 205                 dev_err(rtd->card->dev, "New Headset Jack failed! (%d)\n", ret);
 206                 return ret;
 207         }
 208
 209         snd_jack_set_key(rockchip_sound_jack.jack, SND_JACK_BTN_0, KEY_MEDIA);
 210         snd_jack_set_key(
 211                 rockchip_sound_jack.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
 212         snd_jack_set_key(
 213                 rockchip_sound_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
 214         snd_jack_set_key(
 215                 rockchip_sound_jack.jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
 216
 217         da7219_aad_jack_det(codec, &rockchip_sound_jack);
 218
 219         return 0;
 220 }
 221
 222 static int rockchip_sound_cdndp_hw_params(struct snd_pcm_substream *substream,
 223                                           struct snd_pcm_hw_params *params)
 224 {
 225         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 226         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 227         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 228         int mclk, ret;
 229
 230         /* in bypass mode, the mclk has to be one of the frequencies below */
 231         switch (params_rate(params)) {
 232         case 8000:
 233         case 16000:
 234         case 24000:
 235         case 32000:
 236         case 48000:
 237         case 64000:
 238         case 96000:
 239                 mclk = 12288000;
 240                 break;
 241         case 11025:
 242         case 22050:
 243         case 44100:
 244         case 88200:
 245                 mclk = 11289600;
 246                 break;
 247         default:
 248                 return -EINVAL;
 249         }
 250
 251         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 252                                      SND_SOC_CLOCK_OUT);
 253         if (ret < 0) {
 254                 dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret);
 255                 return ret;
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int rockchip_sound_dmic_hw_params(struct snd_pcm_substream *substream,
 262                              struct snd_pcm_hw_params *params)
 263 {
 264         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 265         unsigned int mclk;
 266         int ret;
 267
 268         mclk = params_rate(params) * SOUND_FS;
 269
 270         ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, 0);
 271         if (ret) {
 272                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
 273                                 __func__, mclk, ret);
 274                 return ret;
 275         }
 276
 277         /* Wait for DMIC stable */
 278         msleep(dmic_wakeup_delay);
 279
 280         return 0;
 281 }
 282
 283 static const struct snd_soc_ops rockchip_sound_max98357a_ops = {
 284         .hw_params = rockchip_sound_max98357a_hw_params,
 285 };
 286
 287 static const struct snd_soc_ops rockchip_sound_rt5514_ops = {
 288         .hw_params = rockchip_sound_rt5514_hw_params,
 289 };
 290
 291 static const struct snd_soc_ops rockchip_sound_da7219_ops = {
 292         .hw_params = rockchip_sound_da7219_hw_params,
 293 };
 294
 295 static const struct snd_soc_ops rockchip_sound_cdndp_ops = {
 296         .hw_params = rockchip_sound_cdndp_hw_params,
 297 };
 298
 299 static const struct snd_soc_ops rockchip_sound_dmic_ops = {
 300         .hw_params = rockchip_sound_dmic_hw_params,
 301 };
 302
 303 static struct snd_soc_card rockchip_sound_card = {
 304         .name = "rk3399-gru-sound",
 305         .owner = THIS_MODULE,
 306         .dapm_widgets = rockchip_dapm_widgets,
 307         .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets),
 308         .controls = rockchip_controls,
 309         .num_controls = ARRAY_SIZE(rockchip_controls),
 310 };
 311
 312 enum {
 313         DAILINK_CDNDP,
 314         DAILINK_DA7219,
 315         DAILINK_DMIC,
 316         DAILINK_MAX98357A,
 317         DAILINK_RT5514,
 318         DAILINK_RT5514_DSP,
 319 };
 320
 321 static const struct snd_soc_dai_link rockchip_dais[] = {
 322         [DAILINK_CDNDP] = {
 323                 .name = "DP",
 324                 .stream_name = "DP PCM",
 325                 .codec_dai_name = "i2s-hifi",
 326                 .ops = &rockchip_sound_cdndp_ops,
 327                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 328                         SND_SOC_DAIFMT_CBS_CFS,
 329         },
 330         [DAILINK_DA7219] = {
 331                 .name = "DA7219",
 332                 .stream_name = "DA7219 PCM",
 333                 .codec_dai_name = "da7219-hifi",
 334                 .init = rockchip_sound_da7219_init,
 335                 .ops = &rockchip_sound_da7219_ops,
 336                 /* set da7219 as slave */
 337                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 338                         SND_SOC_DAIFMT_CBS_CFS,
 339         },
 340         [DAILINK_DMIC] = {
 341                 .name = "DMIC",
 342                 .stream_name = "DMIC PCM",
 343                 .codec_dai_name = "dmic-hifi",
 344                 .ops = &rockchip_sound_dmic_ops,
 345                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 346                         SND_SOC_DAIFMT_CBS_CFS,
 347         },
 348         [DAILINK_MAX98357A] = {
 349                 .name = "MAX98357A",
 350                 .stream_name = "MAX98357A PCM",
 351                 .codec_dai_name = "HiFi",
 352                 .ops = &rockchip_sound_max98357a_ops,
 353                 /* set max98357a as slave */
 354                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 355                         SND_SOC_DAIFMT_CBS_CFS,
 356         },
 357         [DAILINK_RT5514] = {
 358                 .name = "RT5514",
 359                 .stream_name = "RT5514 PCM",
 360                 .codec_dai_name = "rt5514-aif1",
 361                 .ops = &rockchip_sound_rt5514_ops,
 362                 /* set rt5514 as slave */
 363                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 364                         SND_SOC_DAIFMT_CBS_CFS,
 365         },
 366         /* RT5514 DSP for voice wakeup via spi bus */
 367         [DAILINK_RT5514_DSP] = {
 368                 .name = "RT5514 DSP",
 369                 .stream_name = "Wake on Voice",
 370                 .codec_name = "snd-soc-dummy",
 371                 .codec_dai_name = "snd-soc-dummy-dai",
 372         },
 373 };
 374
 375 static const struct snd_soc_dapm_route rockchip_sound_cdndp_routes[] = {
 376         /* Output */
 377         {"HDMI", NULL, "TX"},
 378 };
 379
 380 static const struct snd_soc_dapm_route rockchip_sound_da7219_routes[] = {
 381         /* Output */
 382         {"Headphones", NULL, "HPL"},
 383         {"Headphones", NULL, "HPR"},
 384
 385         /* Input */
 386         {"MIC", NULL, "Headset Mic"},
 387 };
 388
 389 static const struct snd_soc_dapm_route rockchip_sound_dmic_routes[] = {
 390         /* Input */
 391         {"DMic", NULL, "Int Mic"},
 392 };
 393
 394 static const struct snd_soc_dapm_route rockchip_sound_max98357a_routes[] = {
 395         /* Output */
 396         {"Speakers", NULL, "Speaker"},
 397 };
 398
 399 static const struct snd_soc_dapm_route rockchip_sound_rt5514_routes[] = {
 400         /* Input */
 401         {"DMIC1L", NULL, "Int Mic"},
 402         {"DMIC1R", NULL, "Int Mic"},
 403 };
 404
 405 struct rockchip_sound_route {
 406         const struct snd_soc_dapm_route *routes;
 407         int num_routes;
 408 };
 409
 410 static const struct rockchip_sound_route rockchip_routes[] = {
 411         [DAILINK_CDNDP] = {
 412                 .routes = rockchip_sound_cdndp_routes,
 413                 .num_routes = ARRAY_SIZE(rockchip_sound_cdndp_routes),
 414         },
 415         [DAILINK_DA7219] = {
 416                 .routes = rockchip_sound_da7219_routes,
 417                 .num_routes = ARRAY_SIZE(rockchip_sound_da7219_routes),
 418         },
 419         [DAILINK_DMIC] = {
 420                 .routes = rockchip_sound_dmic_routes,
 421                 .num_routes = ARRAY_SIZE(rockchip_sound_dmic_routes),
 422         },
 423         [DAILINK_MAX98357A] = {
 424                 .routes = rockchip_sound_max98357a_routes,
 425                 .num_routes = ARRAY_SIZE(rockchip_sound_max98357a_routes),
 426         },
 427         [DAILINK_RT5514] = {
 428                 .routes = rockchip_sound_rt5514_routes,
 429                 .num_routes = ARRAY_SIZE(rockchip_sound_rt5514_routes),
 430         },
 431         [DAILINK_RT5514_DSP] = {},
 432 };
 433
 434 struct dailink_match_data {
 435         const char *compatible;
 436         struct bus_type *bus_type;
 437 };
 438
 439 static const struct dailink_match_data dailink_match[] = {
 440         [DAILINK_CDNDP] = {
 441                 .compatible = "rockchip,rk3399-cdn-dp",
 442         },
 443         [DAILINK_DA7219] = {
 444                 .compatible = "dlg,da7219",
 445         },
 446         [DAILINK_DMIC] = {
 447                 .compatible = "dmic-codec",
 448         },
 449         [DAILINK_MAX98357A] = {
 450                 .compatible = "maxim,max98357a",
 451         },
 452         [DAILINK_RT5514] = {
 453                 .compatible = "realtek,rt5514",
 454                 .bus_type = &i2c_bus_type,
 455         },
 456         [DAILINK_RT5514_DSP] = {
 457                 .compatible = "realtek,rt5514",
 458                 .bus_type = &spi_bus_type,
 459         },
 460 };
 461
 462 static int of_dev_node_match(struct device *dev, void *data)
 463 {
 464         return dev->of_node == data;
 465 }
 466
 467 static int rockchip_sound_codec_node_match(struct device_node *np_codec)
 468 {
 469         struct device *dev;
 470         int i;
 471
 472         for (i = 0; i < ARRAY_SIZE(dailink_match); i++) {
 473                 if (!of_device_is_compatible(np_codec,
 474                                              dailink_match[i].compatible))
 475                         continue;
 476
 477                 if (dailink_match[i].bus_type) {
 478                         dev = bus_find_device(dailink_match[i].bus_type, NULL,
 479                                               np_codec, of_dev_node_match);
 480                         if (!dev)
 481                                 continue;
 482                         put_device(dev);
 483                 }
 484
 485                 return i;
 486         }
 487         return -1;
 488 }
 489
 490 static int rockchip_sound_of_parse_dais(struct device *dev,
 491                                         struct snd_soc_card *card)
 492 {
 493         struct device_node *np_cpu, *np_cpu0, *np_cpu1;
 494         struct device_node *np_codec;
 495         struct snd_soc_dai_link *dai;
 496         struct snd_soc_dapm_route *routes;
 497         int i, index;
 498         int num_routes;
 499
 500         card->dai_link = devm_kzalloc(dev, sizeof(rockchip_dais),
 501                                       GFP_KERNEL);
 502         if (!card->dai_link)
 503                 return -ENOMEM;
 504
 505         num_routes = 0;
 506         for (i = 0; i < ARRAY_SIZE(rockchip_routes); i++)
 507                 num_routes += rockchip_routes[i].num_routes;
 508         routes = devm_kzalloc(dev, num_routes * sizeof(*routes),
 509                               GFP_KERNEL);
 510         if (!routes)
 511                 return -ENOMEM;
 512         card->dapm_routes = routes;
 513
 514         np_cpu0 = of_parse_phandle(dev->of_node, "rockchip,cpu", 0);
 515         np_cpu1 = of_parse_phandle(dev->of_node, "rockchip,cpu", 1);
 516
 517         card->num_dapm_routes = 0;
 518         card->num_links = 0;
 519         for (i = 0; i < ARRAY_SIZE(rockchip_dais); i++) {
 520                 np_codec = of_parse_phandle(dev->of_node,
 521                                             "rockchip,codec", i);
 522                 if (!np_codec)
 523                         break;
 524
 525                 if (!of_device_is_available(np_codec))
 526                         continue;
 527
 528                 index = rockchip_sound_codec_node_match(np_codec);
 529                 if (index < 0)
 530                         continue;
 531
 532                 switch (index) {
 533                 case DAILINK_CDNDP:
 534                         np_cpu = np_cpu1;
 535                         break;
 536                 case DAILINK_RT5514_DSP:
 537                         np_cpu = np_codec;
 538                         break;
 539                 default:
 540                         np_cpu = np_cpu0;
 541                         break;
 542                 }
 543
 544                 if (!np_cpu) {
 545                         dev_err(dev, "Missing 'rockchip,cpu' for %s\n",
 546                                 rockchip_dais[index].name);
 547                         return -EINVAL;
 548                 }
 549
 550                 dai = &card->dai_link[card->num_links++];
 551                 *dai = rockchip_dais[index];
 552
 553                 if (!dai->codec_name)
 554                         dai->codec_of_node = np_codec;
 555                 dai->platform_of_node = np_cpu;
 556                 dai->cpu_of_node = np_cpu;
 557
 558                 if (card->num_dapm_routes + rockchip_routes[index].num_routes >
 559                     num_routes) {
 560                         dev_err(dev, "Too many routes\n");
 561                         return -EINVAL;
 562                 }
 563
 564                 memcpy(routes + card->num_dapm_routes,
 565                        rockchip_routes[index].routes,
 566                        rockchip_routes[index].num_routes * sizeof(*routes));
 567                 card->num_dapm_routes += rockchip_routes[index].num_routes;
 568         }
 569
 570         return 0;
 571 }
 572
 573 static int rockchip_sound_probe(struct platform_device *pdev)
 574 {
 575         struct snd_soc_card *card = &rockchip_sound_card;
 576         int ret;
 577
 578         ret = rockchip_sound_of_parse_dais(&pdev->dev, card);
 579         if (ret < 0) {
 580                 dev_err(&pdev->dev, "Failed to parse dais: %d\n", ret);
 581                 return ret;
 582         }
 583
 584         /* Set DMIC wakeup delay */
 585         ret = device_property_read_u32(&pdev->dev, "dmic-wakeup-delay-ms",
 586                                         &dmic_wakeup_delay);
 587         if (ret) {
 588                 dmic_wakeup_delay = 0;
 589                 dev_dbg(&pdev->dev,
 590                         "no optional property 'dmic-wakeup-delay-ms' found, default: no delay\n");
 591         }
 592
 593         card->dev = &pdev->dev;
 594         return devm_snd_soc_register_card(&pdev->dev, card);
 595 }
 596
 597 static const struct of_device_id rockchip_sound_of_match[] = {
 598         { .compatible = "rockchip,rk3399-gru-sound", },
 599         {},
 600 };
 601
 602 static struct platform_driver rockchip_sound_driver = {
 603         .probe = rockchip_sound_probe,
 604         .driver = {
 605                 .name = DRV_NAME,
 606                 .of_match_table = rockchip_sound_of_match,
 607 #ifdef CONFIG_PM
 608                 .pm = &snd_soc_pm_ops,
 609 #endif
 610         },
 611 };
 612
 613 module_platform_driver(rockchip_sound_driver);
 614
 615 MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>");
 616 MODULE_DESCRIPTION("Rockchip ASoC Machine Driver");
 617 MODULE_LICENSE("GPL v2");
 618 MODULE_ALIAS("platform:" DRV_NAME);
 619 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);