sound/soc/rockchip/rk3399_gru_sound.c

   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/da7219-aad.h"
  25 #include "../codecs/rt5514.h"
  26
  27 #define DRV_NAME "rk3399-gru-sound"
  28
  29 #define SOUND_FS        256
  30
  31 static unsigned int dmic_wakeup_delay;
  32
  33 static struct snd_soc_jack rockchip_sound_jack;
  34
  35 /* Headset jack detection DAPM pins */
  36 static struct snd_soc_jack_pin rockchip_sound_jack_pins[] = {
  37         {
  38                 .pin = "Headphones",
  39                 .mask = SND_JACK_HEADPHONE,
  40         },
  41         {
  42                 .pin = "Headset Mic",
  43                 .mask = SND_JACK_MICROPHONE,
  44         },
  45
  46 };
  47
  48 static const struct snd_soc_dapm_widget rockchip_dapm_widgets[] = {
  49         SND_SOC_DAPM_HP("Headphones", NULL),
  50         SND_SOC_DAPM_SPK("Speakers", NULL),
  51         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  52         SND_SOC_DAPM_MIC("Int Mic", NULL),
  53         SND_SOC_DAPM_LINE("HDMI", NULL),
  54 };
  55
  56 static const struct snd_kcontrol_new rockchip_controls[] = {
  57         SOC_DAPM_PIN_SWITCH("Headphones"),
  58         SOC_DAPM_PIN_SWITCH("Speakers"),
  59         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  60         SOC_DAPM_PIN_SWITCH("Int Mic"),
  61         SOC_DAPM_PIN_SWITCH("HDMI"),
  62 };
  63
  64 static int rockchip_sound_max98357a_hw_params(struct snd_pcm_substream *substream,
  65                              struct snd_pcm_hw_params *params)
  66 {
  67         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  68         unsigned int mclk;
  69         int ret;
  70
  71         mclk = params_rate(params) * SOUND_FS;
  72
  73         ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk, 0);
  74         if (ret) {
  75                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
  76                                 __func__, mclk, ret);
  77                 return ret;
  78         }
  79
  80         return 0;
  81 }
  82
  83 static int rockchip_sound_rt5514_hw_params(struct snd_pcm_substream *substream,
  84                              struct snd_pcm_hw_params *params)
  85 {
  86         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  87         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  88         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  89         unsigned int mclk;
  90         int ret;
  91
  92         mclk = params_rate(params) * SOUND_FS;
  93
  94         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
  95                                      SND_SOC_CLOCK_OUT);
  96         if (ret < 0) {
  97                 dev_err(rtd->card->dev, "Can't set cpu clock out %d\n", ret);
  98                 return ret;
  99         }
 100
 101         ret = snd_soc_dai_set_sysclk(codec_dai, RT5514_SCLK_S_MCLK,
 102                                      mclk, SND_SOC_CLOCK_IN);
 103         if (ret) {
 104                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
 105                                 __func__, params_rate(params) * 512, ret);
 106                 return ret;
 107         }
 108
 109         /* Wait for DMIC stable */
 110         msleep(dmic_wakeup_delay);
 111
 112         return 0;
 113 }
 114
 115 static int rockchip_sound_da7219_hw_params(struct snd_pcm_substream *substream,
 116                              struct snd_pcm_hw_params *params)
 117 {
 118         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 119         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 120         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 121         int mclk, ret;
 122
 123         /* in bypass mode, the mclk has to be one of the frequencies below */
 124         switch (params_rate(params)) {
 125         case 8000:
 126         case 16000:
 127         case 24000:
 128         case 32000:
 129         case 48000:
 130         case 64000:
 131         case 96000:
 132                 mclk = 12288000;
 133                 break;
 134         case 11025:
 135         case 22050:
 136         case 44100:
 137         case 88200:
 138                 mclk = 11289600;
 139                 break;
 140         default:
 141                 return -EINVAL;
 142         }
 143
 144         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 145                                      SND_SOC_CLOCK_OUT);
 146         if (ret < 0) {
 147                 dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret);
 148                 return ret;
 149         }
 150
 151         ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 152                                      SND_SOC_CLOCK_IN);
 153         if (ret < 0) {
 154                 dev_err(codec_dai->dev, "Can't set codec clock in %d\n", ret);
 155                 return ret;
 156         }
 157
 158         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
 159         if (ret < 0) {
 160                 dev_err(codec_dai->dev, "Can't set pll sysclk mclk %d\n", ret);
 161                 return ret;
 162         }
 163
 164         return 0;
 165 }
 166
 167 static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
 168 {
 169         struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
 170         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 171         int ret;
 172
 173         /* We need default MCLK and PLL settings for the accessory detection */
 174         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 12288000,
 175                                      SND_SOC_CLOCK_IN);
 176         if (ret < 0) {
 177                 dev_err(codec_dai->dev, "Init can't set codec clock in %d\n", ret);
 178                 return ret;
 179         }
 180
 181         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
 182         if (ret < 0) {
 183                 dev_err(codec_dai->dev, "Init can't set pll sysclk mclk %d\n", ret);
 184                 return ret;
 185         }
 186
 187         /* Enable Headset and 4 Buttons Jack detection */
 188         ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
 189                                     SND_JACK_HEADSET | SND_JACK_LINEOUT |
 190                                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 191                                     SND_JACK_BTN_2 | SND_JACK_BTN_3,
 192                                     &rockchip_sound_jack,
 193                                     rockchip_sound_jack_pins,
 194                                     ARRAY_SIZE(rockchip_sound_jack_pins));
 195
 196         if (ret) {
 197                 dev_err(rtd->card->dev, "New Headset Jack failed! (%d)\n", ret);
 198                 return ret;
 199         }
 200
 201         snd_jack_set_key(
 202                 rockchip_sound_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 203         snd_jack_set_key(
 204                 rockchip_sound_jack.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
 205         snd_jack_set_key(
 206                 rockchip_sound_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
 207         snd_jack_set_key(
 208                 rockchip_sound_jack.jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
 209
 210         da7219_aad_jack_det(component, &rockchip_sound_jack);
 211
 212         return 0;
 213 }
 214
 215 static int rockchip_sound_dmic_hw_params(struct snd_pcm_substream *substream,
 216                              struct snd_pcm_hw_params *params)
 217 {
 218         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 219         unsigned int mclk;
 220         int ret;
 221
 222         mclk = params_rate(params) * SOUND_FS;
 223
 224         ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk, 0);
 225         if (ret) {
 226                 dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
 227                                 __func__, mclk, ret);
 228                 return ret;
 229         }
 230
 231         /* Wait for DMIC stable */
 232         msleep(dmic_wakeup_delay);
 233
 234         return 0;
 235 }
 236
 237 static int rockchip_sound_startup(struct snd_pcm_substream *substream)
 238 {
 239         struct snd_pcm_runtime *runtime = substream->runtime;
 240
 241         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
 242         return snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE,
 243                         8000, 96000);
 244 }
 245
 246 static const struct snd_soc_ops rockchip_sound_max98357a_ops = {
 247         .startup = rockchip_sound_startup,
 248         .hw_params = rockchip_sound_max98357a_hw_params,
 249 };
 250
 251 static const struct snd_soc_ops rockchip_sound_rt5514_ops = {
 252         .startup = rockchip_sound_startup,
 253         .hw_params = rockchip_sound_rt5514_hw_params,
 254 };
 255
 256 static const struct snd_soc_ops rockchip_sound_da7219_ops = {
 257         .startup = rockchip_sound_startup,
 258         .hw_params = rockchip_sound_da7219_hw_params,
 259 };
 260
 261 static const struct snd_soc_ops rockchip_sound_dmic_ops = {
 262         .startup = rockchip_sound_startup,
 263         .hw_params = rockchip_sound_dmic_hw_params,
 264 };
 265
 266 static struct snd_soc_card rockchip_sound_card = {
 267         .name = "rk3399-gru-sound",
 268         .owner = THIS_MODULE,
 269         .dapm_widgets = rockchip_dapm_widgets,
 270         .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets),
 271         .controls = rockchip_controls,
 272         .num_controls = ARRAY_SIZE(rockchip_controls),
 273 };
 274
 275 enum {
 276         DAILINK_CDNDP,
 277         DAILINK_DA7219,
 278         DAILINK_DMIC,
 279         DAILINK_MAX98357A,
 280         DAILINK_RT5514,
 281         DAILINK_RT5514_DSP,
 282 };
 283
 284 SND_SOC_DAILINK_DEFS(cdndp,
 285         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 286         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "spdif-hifi")),
 287         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 288
 289 SND_SOC_DAILINK_DEFS(da7219,
 290         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 291         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "da7219-hifi")),
 292         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 293
 294 SND_SOC_DAILINK_DEFS(dmic,
 295         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 296         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dmic-hifi")),
 297         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 298
 299 SND_SOC_DAILINK_DEFS(max98357a,
 300         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 301         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")),
 302         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 303
 304 SND_SOC_DAILINK_DEFS(rt5514,
 305         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 306         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5514-aif1")),
 307         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 308
 309 SND_SOC_DAILINK_DEFS(rt5514_dsp,
 310         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 311         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 312         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 313
 314 static const struct snd_soc_dai_link rockchip_dais[] = {
 315         [DAILINK_CDNDP] = {
 316                 .name = "DP",
 317                 .stream_name = "DP PCM",
 318                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 319                         SND_SOC_DAIFMT_CBS_CFS,
 320                 SND_SOC_DAILINK_REG(cdndp),
 321         },
 322         [DAILINK_DA7219] = {
 323                 .name = "DA7219",
 324                 .stream_name = "DA7219 PCM",
 325                 .init = rockchip_sound_da7219_init,
 326                 .ops = &rockchip_sound_da7219_ops,
 327                 /* set da7219 as slave */
 328                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 329                         SND_SOC_DAIFMT_CBS_CFS,
 330                 SND_SOC_DAILINK_REG(da7219),
 331         },
 332         [DAILINK_DMIC] = {
 333                 .name = "DMIC",
 334                 .stream_name = "DMIC PCM",
 335                 .ops = &rockchip_sound_dmic_ops,
 336                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 337                         SND_SOC_DAIFMT_CBS_CFS,
 338                 SND_SOC_DAILINK_REG(dmic),
 339         },
 340         [DAILINK_MAX98357A] = {
 341                 .name = "MAX98357A",
 342                 .stream_name = "MAX98357A PCM",
 343                 .ops = &rockchip_sound_max98357a_ops,
 344                 /* set max98357a as slave */
 345                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 346                         SND_SOC_DAIFMT_CBS_CFS,
 347                 SND_SOC_DAILINK_REG(max98357a),
 348         },
 349         [DAILINK_RT5514] = {
 350                 .name = "RT5514",
 351                 .stream_name = "RT5514 PCM",
 352                 .ops = &rockchip_sound_rt5514_ops,
 353                 /* set rt5514 as slave */
 354                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 355                         SND_SOC_DAIFMT_CBS_CFS,
 356                 SND_SOC_DAILINK_REG(rt5514),
 357         },
 358         /* RT5514 DSP for voice wakeup via spi bus */
 359         [DAILINK_RT5514_DSP] = {
 360                 .name = "RT5514 DSP",
 361                 .stream_name = "Wake on Voice",
 362                 SND_SOC_DAILINK_REG(rt5514_dsp),
 363         },
 364 };
 365
 366 static const struct snd_soc_dapm_route rockchip_sound_cdndp_routes[] = {
 367         /* Output */
 368         {"HDMI", NULL, "TX"},
 369 };
 370
 371 static const struct snd_soc_dapm_route rockchip_sound_da7219_routes[] = {
 372         /* Output */
 373         {"Headphones", NULL, "HPL"},
 374         {"Headphones", NULL, "HPR"},
 375
 376         /* Input */
 377         {"MIC", NULL, "Headset Mic"},
 378 };
 379
 380 static const struct snd_soc_dapm_route rockchip_sound_dmic_routes[] = {
 381         /* Input */
 382         {"DMic", NULL, "Int Mic"},
 383 };
 384
 385 static const struct snd_soc_dapm_route rockchip_sound_max98357a_routes[] = {
 386         /* Output */
 387         {"Speakers", NULL, "Speaker"},
 388 };
 389
 390 static const struct snd_soc_dapm_route rockchip_sound_rt5514_routes[] = {
 391         /* Input */
 392         {"DMIC1L", NULL, "Int Mic"},
 393         {"DMIC1R", NULL, "Int Mic"},
 394 };
 395
 396 struct rockchip_sound_route {
 397         const struct snd_soc_dapm_route *routes;
 398         int num_routes;
 399 };
 400
 401 static const struct rockchip_sound_route rockchip_routes[] = {
 402         [DAILINK_CDNDP] = {
 403                 .routes = rockchip_sound_cdndp_routes,
 404                 .num_routes = ARRAY_SIZE(rockchip_sound_cdndp_routes),
 405         },
 406         [DAILINK_DA7219] = {
 407                 .routes = rockchip_sound_da7219_routes,
 408                 .num_routes = ARRAY_SIZE(rockchip_sound_da7219_routes),
 409         },
 410         [DAILINK_DMIC] = {
 411                 .routes = rockchip_sound_dmic_routes,
 412                 .num_routes = ARRAY_SIZE(rockchip_sound_dmic_routes),
 413         },
 414         [DAILINK_MAX98357A] = {
 415                 .routes = rockchip_sound_max98357a_routes,
 416                 .num_routes = ARRAY_SIZE(rockchip_sound_max98357a_routes),
 417         },
 418         [DAILINK_RT5514] = {
 419                 .routes = rockchip_sound_rt5514_routes,
 420                 .num_routes = ARRAY_SIZE(rockchip_sound_rt5514_routes),
 421         },
 422         [DAILINK_RT5514_DSP] = {},
 423 };
 424
 425 struct dailink_match_data {
 426         const char *compatible;
 427         struct bus_type *bus_type;
 428 };
 429
 430 static const struct dailink_match_data dailink_match[] = {
 431         [DAILINK_CDNDP] = {
 432                 .compatible = "rockchip,rk3399-cdn-dp",
 433         },
 434         [DAILINK_DA7219] = {
 435                 .compatible = "dlg,da7219",
 436         },
 437         [DAILINK_DMIC] = {
 438                 .compatible = "dmic-codec",
 439         },
 440         [DAILINK_MAX98357A] = {
 441                 .compatible = "maxim,max98357a",
 442         },
 443         [DAILINK_RT5514] = {
 444                 .compatible = "realtek,rt5514",
 445                 .bus_type = &i2c_bus_type,
 446         },
 447         [DAILINK_RT5514_DSP] = {
 448                 .compatible = "realtek,rt5514",
 449                 .bus_type = &spi_bus_type,
 450         },
 451 };
 452
 453 static int rockchip_sound_codec_node_match(struct device_node *np_codec)
 454 {
 455         struct device *dev;
 456         int i;
 457
 458         for (i = 0; i < ARRAY_SIZE(dailink_match); i++) {
 459                 if (!of_device_is_compatible(np_codec,
 460                                              dailink_match[i].compatible))
 461                         continue;
 462
 463                 if (dailink_match[i].bus_type) {
 464                         dev = bus_find_device_by_of_node(dailink_match[i].bus_type,
 465                                                          np_codec);
 466                         if (!dev)
 467                                 continue;
 468                         put_device(dev);
 469                 }
 470
 471                 return i;
 472         }
 473         return -1;
 474 }
 475
 476 static int rockchip_sound_of_parse_dais(struct device *dev,
 477                                         struct snd_soc_card *card)
 478 {
 479         struct device_node *np_cpu, *np_cpu0, *np_cpu1;
 480         struct device_node *np_codec;
 481         struct snd_soc_dai_link *dai;
 482         struct snd_soc_dapm_route *routes;
 483         int i, index;
 484         int num_routes;
 485
 486         card->dai_link = devm_kzalloc(dev, sizeof(rockchip_dais),
 487                                       GFP_KERNEL);
 488         if (!card->dai_link)
 489                 return -ENOMEM;
 490
 491         num_routes = 0;
 492         for (i = 0; i < ARRAY_SIZE(rockchip_routes); i++)
 493                 num_routes += rockchip_routes[i].num_routes;
 494         routes = devm_kcalloc(dev, num_routes, sizeof(*routes),
 495                               GFP_KERNEL);
 496         if (!routes)
 497                 return -ENOMEM;
 498         card->dapm_routes = routes;
 499
 500         np_cpu0 = of_parse_phandle(dev->of_node, "rockchip,cpu", 0);
 501         np_cpu1 = of_parse_phandle(dev->of_node, "rockchip,cpu", 1);
 502
 503         card->num_dapm_routes = 0;
 504         card->num_links = 0;
 505         for (i = 0; i < ARRAY_SIZE(rockchip_dais); i++) {
 506                 np_codec = of_parse_phandle(dev->of_node,
 507                                             "rockchip,codec", i);
 508                 if (!np_codec)
 509                         break;
 510
 511                 if (!of_device_is_available(np_codec))
 512                         continue;
 513
 514                 index = rockchip_sound_codec_node_match(np_codec);
 515                 if (index < 0)
 516                         continue;
 517
 518                 switch (index) {
 519                 case DAILINK_CDNDP:
 520                         np_cpu = np_cpu1;
 521                         break;
 522                 case DAILINK_RT5514_DSP:
 523                         np_cpu = np_codec;
 524                         break;
 525                 default:
 526                         np_cpu = np_cpu0;
 527                         break;
 528                 }
 529
 530                 if (!np_cpu) {
 531                         dev_err(dev, "Missing 'rockchip,cpu' for %s\n",
 532                                 rockchip_dais[index].name);
 533                         return -EINVAL;
 534                 }
 535
 536                 dai = &card->dai_link[card->num_links++];
 537                 *dai = rockchip_dais[index];
 538
 539                 if (!dai->codecs->name)
 540                         dai->codecs->of_node = np_codec;
 541                 dai->platforms->of_node = np_cpu;
 542                 dai->cpus->of_node = np_cpu;
 543
 544                 if (card->num_dapm_routes + rockchip_routes[index].num_routes >
 545                     num_routes) {
 546                         dev_err(dev, "Too many routes\n");
 547                         return -EINVAL;
 548                 }
 549
 550                 memcpy(routes + card->num_dapm_routes,
 551                        rockchip_routes[index].routes,
 552                        rockchip_routes[index].num_routes * sizeof(*routes));
 553                 card->num_dapm_routes += rockchip_routes[index].num_routes;
 554         }
 555
 556         return 0;
 557 }
 558
 559 static int rockchip_sound_probe(struct platform_device *pdev)
 560 {
 561         struct snd_soc_card *card = &rockchip_sound_card;
 562         int ret;
 563
 564         ret = rockchip_sound_of_parse_dais(&pdev->dev, card);
 565         if (ret < 0) {
 566                 dev_err(&pdev->dev, "Failed to parse dais: %d\n", ret);
 567                 return ret;
 568         }
 569
 570         /* Set DMIC wakeup delay */
 571         ret = device_property_read_u32(&pdev->dev, "dmic-wakeup-delay-ms",
 572                                         &dmic_wakeup_delay);
 573         if (ret) {
 574                 dmic_wakeup_delay = 0;
 575                 dev_dbg(&pdev->dev,
 576                         "no optional property 'dmic-wakeup-delay-ms' found, default: no delay\n");
 577         }
 578
 579         card->dev = &pdev->dev;
 580         return devm_snd_soc_register_card(&pdev->dev, card);
 581 }
 582
 583 static const struct of_device_id rockchip_sound_of_match[] = {
 584         { .compatible = "rockchip,rk3399-gru-sound", },
 585         {},
 586 };
 587
 588 static struct platform_driver rockchip_sound_driver = {
 589         .probe = rockchip_sound_probe,
 590         .driver = {
 591                 .name = DRV_NAME,
 592                 .of_match_table = rockchip_sound_of_match,
 593 #ifdef CONFIG_PM
 594                 .pm = &snd_soc_pm_ops,
 595 #endif
 596         },
 597 };
 598
 599 module_platform_driver(rockchip_sound_driver);
 600
 601 MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>");
 602 MODULE_DESCRIPTION("Rockchip ASoC Machine Driver");
 603 MODULE_LICENSE("GPL v2");
 604 MODULE_ALIAS("platform:" DRV_NAME);
 605 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);