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(
 210                 rockchip_sound_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 211         snd_jack_set_key(
 212                 rockchip_sound_jack.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
 213         snd_jack_set_key(
 214                 rockchip_sound_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
 215         snd_jack_set_key(
 216                 rockchip_sound_jack.jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
 217
 218         da7219_aad_jack_det(codec, &rockchip_sound_jack);
 219
 220         return 0;
 221 }
 222
 223 static int rockchip_sound_cdndp_hw_params(struct snd_pcm_substream *substream,
 224                                           struct snd_pcm_hw_params *params)
 225 {
 226         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 227         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 228         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 229         int mclk, ret;
 230
 231         /* in bypass mode, the mclk has to be one of the frequencies below */
 232         switch (params_rate(params)) {
 233         case 8000:
 234         case 16000:
 235         case 24000:
 236         case 32000:
 237         case 48000:
 238         case 64000:
 239         case 96000:
 240                 mclk = 12288000;
 241                 break;
 242         case 11025:
 243         case 22050:
 244         case 44100:
 245         case 88200:
 246                 mclk = 11289600;
 247                 break;
 248         default:
 249                 return -EINVAL;
 250         }
 251
 252         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 253                                      SND_SOC_CLOCK_OUT);
 254         if (ret < 0) {
 255                 dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret);
 256                 return ret;
 257         }
 258
 259         return 0;
 260 }
 261
 262 static int rockchip_sound_dmic_hw_params(struct snd_pcm_substream *substream,
 263                              struct snd_pcm_hw_params *params)
 264 {
 265         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 266         unsigned int mclk;
 267         int ret;
 268
 269         mclk = params_rate(params) * SOUND_FS;
 270
 271         ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, 0);
 272         if (ret) {
 273                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
 274                                 __func__, mclk, ret);
 275                 return ret;
 276         }
 277
 278         /* Wait for DMIC stable */
 279         msleep(dmic_wakeup_delay);
 280
 281         return 0;
 282 }
 283
 284 static const struct snd_soc_ops rockchip_sound_max98357a_ops = {
 285         .hw_params = rockchip_sound_max98357a_hw_params,
 286 };
 287
 288 static const struct snd_soc_ops rockchip_sound_rt5514_ops = {
 289         .hw_params = rockchip_sound_rt5514_hw_params,
 290 };
 291
 292 static const struct snd_soc_ops rockchip_sound_da7219_ops = {
 293         .hw_params = rockchip_sound_da7219_hw_params,
 294 };
 295
 296 static const struct snd_soc_ops rockchip_sound_cdndp_ops = {
 297         .hw_params = rockchip_sound_cdndp_hw_params,
 298 };
 299
 300 static const struct snd_soc_ops rockchip_sound_dmic_ops = {
 301         .hw_params = rockchip_sound_dmic_hw_params,
 302 };
 303
 304 static struct snd_soc_card rockchip_sound_card = {
 305         .name = "rk3399-gru-sound",
 306         .owner = THIS_MODULE,
 307         .dapm_widgets = rockchip_dapm_widgets,
 308         .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets),
 309         .controls = rockchip_controls,
 310         .num_controls = ARRAY_SIZE(rockchip_controls),
 311 };
 312
 313 enum {
 314         DAILINK_CDNDP,
 315         DAILINK_DA7219,
 316         DAILINK_DMIC,
 317         DAILINK_MAX98357A,
 318         DAILINK_RT5514,
 319         DAILINK_RT5514_DSP,
 320 };
 321
 322 static const struct snd_soc_dai_link rockchip_dais[] = {
 323         [DAILINK_CDNDP] = {
 324                 .name = "DP",
 325                 .stream_name = "DP PCM",
 326                 .codec_dai_name = "i2s-hifi",
 327                 .ops = &rockchip_sound_cdndp_ops,
 328                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 329                         SND_SOC_DAIFMT_CBS_CFS,
 330         },
 331         [DAILINK_DA7219] = {
 332                 .name = "DA7219",
 333                 .stream_name = "DA7219 PCM",
 334                 .codec_dai_name = "da7219-hifi",
 335                 .init = rockchip_sound_da7219_init,
 336                 .ops = &rockchip_sound_da7219_ops,
 337                 /* set da7219 as slave */
 338                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 339                         SND_SOC_DAIFMT_CBS_CFS,
 340         },
 341         [DAILINK_DMIC] = {
 342                 .name = "DMIC",
 343                 .stream_name = "DMIC PCM",
 344                 .codec_dai_name = "dmic-hifi",
 345                 .ops = &rockchip_sound_dmic_ops,
 346                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 347                         SND_SOC_DAIFMT_CBS_CFS,
 348         },
 349         [DAILINK_MAX98357A] = {
 350                 .name = "MAX98357A",
 351                 .stream_name = "MAX98357A PCM",
 352                 .codec_dai_name = "HiFi",
 353                 .ops = &rockchip_sound_max98357a_ops,
 354                 /* set max98357a as slave */
 355                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 356                         SND_SOC_DAIFMT_CBS_CFS,
 357         },
 358         [DAILINK_RT5514] = {
 359                 .name = "RT5514",
 360                 .stream_name = "RT5514 PCM",
 361                 .codec_dai_name = "rt5514-aif1",
 362                 .ops = &rockchip_sound_rt5514_ops,
 363                 /* set rt5514 as slave */
 364                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 365                         SND_SOC_DAIFMT_CBS_CFS,
 366         },
 367         /* RT5514 DSP for voice wakeup via spi bus */
 368         [DAILINK_RT5514_DSP] = {
 369                 .name = "RT5514 DSP",
 370                 .stream_name = "Wake on Voice",
 371                 .codec_name = "snd-soc-dummy",
 372                 .codec_dai_name = "snd-soc-dummy-dai",
 373         },
 374 };
 375
 376 static const struct snd_soc_dapm_route rockchip_sound_cdndp_routes[] = {
 377         /* Output */
 378         {"HDMI", NULL, "TX"},
 379 };
 380
 381 static const struct snd_soc_dapm_route rockchip_sound_da7219_routes[] = {
 382         /* Output */
 383         {"Headphones", NULL, "HPL"},
 384         {"Headphones", NULL, "HPR"},
 385
 386         /* Input */
 387         {"MIC", NULL, "Headset Mic"},
 388 };
 389
 390 static const struct snd_soc_dapm_route rockchip_sound_dmic_routes[] = {
 391         /* Input */
 392         {"DMic", NULL, "Int Mic"},
 393 };
 394
 395 static const struct snd_soc_dapm_route rockchip_sound_max98357a_routes[] = {
 396         /* Output */
 397         {"Speakers", NULL, "Speaker"},
 398 };
 399
 400 static const struct snd_soc_dapm_route rockchip_sound_rt5514_routes[] = {
 401         /* Input */
 402         {"DMIC1L", NULL, "Int Mic"},
 403         {"DMIC1R", NULL, "Int Mic"},
 404 };
 405
 406 struct rockchip_sound_route {
 407         const struct snd_soc_dapm_route *routes;
 408         int num_routes;
 409 };
 410
 411 static const struct rockchip_sound_route rockchip_routes[] = {
 412         [DAILINK_CDNDP] = {
 413                 .routes = rockchip_sound_cdndp_routes,
 414                 .num_routes = ARRAY_SIZE(rockchip_sound_cdndp_routes),
 415         },
 416         [DAILINK_DA7219] = {
 417                 .routes = rockchip_sound_da7219_routes,
 418                 .num_routes = ARRAY_SIZE(rockchip_sound_da7219_routes),
 419         },
 420         [DAILINK_DMIC] = {
 421                 .routes = rockchip_sound_dmic_routes,
 422                 .num_routes = ARRAY_SIZE(rockchip_sound_dmic_routes),
 423         },
 424         [DAILINK_MAX98357A] = {
 425                 .routes = rockchip_sound_max98357a_routes,
 426                 .num_routes = ARRAY_SIZE(rockchip_sound_max98357a_routes),
 427         },
 428         [DAILINK_RT5514] = {
 429                 .routes = rockchip_sound_rt5514_routes,
 430                 .num_routes = ARRAY_SIZE(rockchip_sound_rt5514_routes),
 431         },
 432         [DAILINK_RT5514_DSP] = {},
 433 };
 434
 435 struct dailink_match_data {
 436         const char *compatible;
 437         struct bus_type *bus_type;
 438 };
 439
 440 static const struct dailink_match_data dailink_match[] = {
 441         [DAILINK_CDNDP] = {
 442                 .compatible = "rockchip,rk3399-cdn-dp",
 443         },
 444         [DAILINK_DA7219] = {
 445                 .compatible = "dlg,da7219",
 446         },
 447         [DAILINK_DMIC] = {
 448                 .compatible = "dmic-codec",
 449         },
 450         [DAILINK_MAX98357A] = {
 451                 .compatible = "maxim,max98357a",
 452         },
 453         [DAILINK_RT5514] = {
 454                 .compatible = "realtek,rt5514",
 455                 .bus_type = &i2c_bus_type,
 456         },
 457         [DAILINK_RT5514_DSP] = {
 458                 .compatible = "realtek,rt5514",
 459                 .bus_type = &spi_bus_type,
 460         },
 461 };
 462
 463 static int of_dev_node_match(struct device *dev, void *data)
 464 {
 465         return dev->of_node == data;
 466 }
 467
 468 static int rockchip_sound_codec_node_match(struct device_node *np_codec)
 469 {
 470         struct device *dev;
 471         int i;
 472
 473         for (i = 0; i < ARRAY_SIZE(dailink_match); i++) {
 474                 if (!of_device_is_compatible(np_codec,
 475                                              dailink_match[i].compatible))
 476                         continue;
 477
 478                 if (dailink_match[i].bus_type) {
 479                         dev = bus_find_device(dailink_match[i].bus_type, NULL,
 480                                               np_codec, of_dev_node_match);
 481                         if (!dev)
 482                                 continue;
 483                         put_device(dev);
 484                 }
 485
 486                 return i;
 487         }
 488         return -1;
 489 }
 490
 491 static int rockchip_sound_of_parse_dais(struct device *dev,
 492                                         struct snd_soc_card *card)
 493 {
 494         struct device_node *np_cpu, *np_cpu0, *np_cpu1;
 495         struct device_node *np_codec;
 496         struct snd_soc_dai_link *dai;
 497         struct snd_soc_dapm_route *routes;
 498         int i, index;
 499         int num_routes;
 500
 501         card->dai_link = devm_kzalloc(dev, sizeof(rockchip_dais),
 502                                       GFP_KERNEL);
 503         if (!card->dai_link)
 504                 return -ENOMEM;
 505
 506         num_routes = 0;
 507         for (i = 0; i < ARRAY_SIZE(rockchip_routes); i++)
 508                 num_routes += rockchip_routes[i].num_routes;
 509         routes = devm_kzalloc(dev, num_routes * sizeof(*routes),
 510                               GFP_KERNEL);
 511         if (!routes)
 512                 return -ENOMEM;
 513         card->dapm_routes = routes;
 514
 515         np_cpu0 = of_parse_phandle(dev->of_node, "rockchip,cpu", 0);
 516         np_cpu1 = of_parse_phandle(dev->of_node, "rockchip,cpu", 1);
 517
 518         card->num_dapm_routes = 0;
 519         card->num_links = 0;
 520         for (i = 0; i < ARRAY_SIZE(rockchip_dais); i++) {
 521                 np_codec = of_parse_phandle(dev->of_node,
 522                                             "rockchip,codec", i);
 523                 if (!np_codec)
 524                         break;
 525
 526                 if (!of_device_is_available(np_codec))
 527                         continue;
 528
 529                 index = rockchip_sound_codec_node_match(np_codec);
 530                 if (index < 0)
 531                         continue;
 532
 533                 switch (index) {
 534                 case DAILINK_CDNDP:
 535                         np_cpu = np_cpu1;
 536                         break;
 537                 case DAILINK_RT5514_DSP:
 538                         np_cpu = np_codec;
 539                         break;
 540                 default:
 541                         np_cpu = np_cpu0;
 542                         break;
 543                 }
 544
 545                 if (!np_cpu) {
 546                         dev_err(dev, "Missing 'rockchip,cpu' for %s\n",
 547                                 rockchip_dais[index].name);
 548                         return -EINVAL;
 549                 }
 550
 551                 dai = &card->dai_link[card->num_links++];
 552                 *dai = rockchip_dais[index];
 553
 554                 if (!dai->codec_name)
 555                         dai->codec_of_node = np_codec;
 556                 dai->platform_of_node = np_cpu;
 557                 dai->cpu_of_node = np_cpu;
 558
 559                 if (card->num_dapm_routes + rockchip_routes[index].num_routes >
 560                     num_routes) {
 561                         dev_err(dev, "Too many routes\n");
 562                         return -EINVAL;
 563                 }
 564
 565                 memcpy(routes + card->num_dapm_routes,
 566                        rockchip_routes[index].routes,
 567                        rockchip_routes[index].num_routes * sizeof(*routes));
 568                 card->num_dapm_routes += rockchip_routes[index].num_routes;
 569         }
 570
 571         return 0;
 572 }
 573
 574 static int rockchip_sound_probe(struct platform_device *pdev)
 575 {
 576         struct snd_soc_card *card = &rockchip_sound_card;
 577         int ret;
 578
 579         ret = rockchip_sound_of_parse_dais(&pdev->dev, card);
 580         if (ret < 0) {
 581                 dev_err(&pdev->dev, "Failed to parse dais: %d\n", ret);
 582                 return ret;
 583         }
 584
 585         /* Set DMIC wakeup delay */
 586         ret = device_property_read_u32(&pdev->dev, "dmic-wakeup-delay-ms",
 587                                         &dmic_wakeup_delay);
 588         if (ret) {
 589                 dmic_wakeup_delay = 0;
 590                 dev_dbg(&pdev->dev,
 591                         "no optional property 'dmic-wakeup-delay-ms' found, default: no delay\n");
 592         }
 593
 594         card->dev = &pdev->dev;
 595         return devm_snd_soc_register_card(&pdev->dev, card);
 596 }
 597
 598 static const struct of_device_id rockchip_sound_of_match[] = {
 599         { .compatible = "rockchip,rk3399-gru-sound", },
 600         {},
 601 };
 602
 603 static struct platform_driver rockchip_sound_driver = {
 604         .probe = rockchip_sound_probe,
 605         .driver = {
 606                 .name = DRV_NAME,
 607                 .of_match_table = rockchip_sound_of_match,
 608 #ifdef CONFIG_PM
 609                 .pm = &snd_soc_pm_ops,
 610 #endif
 611         },
 612 };
 613
 614 module_platform_driver(rockchip_sound_driver);
 615
 616 MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>");
 617 MODULE_DESCRIPTION("Rockchip ASoC Machine Driver");
 618 MODULE_LICENSE("GPL v2");
 619 MODULE_ALIAS("platform:" DRV_NAME);
 620 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);