kernel/sound/soc/generic/simple-card.c

   1 /*
   2  * ASoC simple sound card support
   3  *
   4  * Copyright (C) 2012 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #include <linux/clk.h>
  12 #include <linux/device.h>
  13 #include <linux/gpio.h>
  14 #include <linux/module.h>
  15 #include <linux/of.h>
  16 #include <linux/of_gpio.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/string.h>
  19 #include <sound/jack.h>
  20 #include <sound/simple_card.h>
  21 #include <sound/soc-dai.h>
  22 #include <sound/soc.h>
  23
  24 struct simple_card_data {
  25         struct snd_soc_card snd_card;
  26         struct simple_dai_props {
  27                 struct asoc_simple_dai cpu_dai;
  28                 struct asoc_simple_dai codec_dai;
  29         } *dai_props;
  30         unsigned int mclk_fs;
  31         int gpio_hp_det;
  32         int gpio_hp_det_invert;
  33         int gpio_mic_det;
  34         int gpio_mic_det_invert;
  35         struct snd_soc_dai_link dai_link[];     /* dynamically allocated */
  36 };
  37
  38 #define simple_priv_to_dev(priv) ((priv)->snd_card.dev)
  39 #define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
  40 #define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
  41
  42 static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
  43 {
  44         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  45         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
  46         struct simple_dai_props *dai_props =
  47                 &priv->dai_props[rtd - rtd->card->rtd];
  48         int ret;
  49
  50         ret = clk_prepare_enable(dai_props->cpu_dai.clk);
  51         if (ret)
  52                 return ret;
  53
  54         ret = clk_prepare_enable(dai_props->codec_dai.clk);
  55         if (ret)
  56                 clk_disable_unprepare(dai_props->cpu_dai.clk);
  57
  58         return ret;
  59 }
  60
  61 static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
  62 {
  63         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  64         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
  65         struct simple_dai_props *dai_props =
  66                 &priv->dai_props[rtd - rtd->card->rtd];
  67
  68         clk_disable_unprepare(dai_props->cpu_dai.clk);
  69
  70         clk_disable_unprepare(dai_props->codec_dai.clk);
  71 }
  72
  73 static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
  74                                       struct snd_pcm_hw_params *params)
  75 {
  76         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  77         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  78         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
  79         unsigned int mclk;
  80         int ret = 0;
  81
  82         if (priv->mclk_fs) {
  83                 mclk = params_rate(params) * priv->mclk_fs;
  84                 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  85                                              SND_SOC_CLOCK_IN);
  86         }
  87
  88         return ret;
  89 }
  90
  91 static struct snd_soc_ops asoc_simple_card_ops = {
  92         .startup = asoc_simple_card_startup,
  93         .shutdown = asoc_simple_card_shutdown,
  94         .hw_params = asoc_simple_card_hw_params,
  95 };
  96
  97 static struct snd_soc_jack simple_card_hp_jack;
  98 static struct snd_soc_jack_pin simple_card_hp_jack_pins[] = {
  99         {
 100                 .pin = "Headphones",
 101                 .mask = SND_JACK_HEADPHONE,
 102         },
 103 };
 104 static struct snd_soc_jack_gpio simple_card_hp_jack_gpio = {
 105         .name = "Headphone detection",
 106         .report = SND_JACK_HEADPHONE,
 107         .debounce_time = 150,
 108 };
 109
 110 static struct snd_soc_jack simple_card_mic_jack;
 111 static struct snd_soc_jack_pin simple_card_mic_jack_pins[] = {
 112         {
 113                 .pin = "Mic Jack",
 114                 .mask = SND_JACK_MICROPHONE,
 115         },
 116 };
 117 static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = {
 118         .name = "Mic detection",
 119         .report = SND_JACK_MICROPHONE,
 120         .debounce_time = 150,
 121 };
 122
 123 static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
 124                                        struct asoc_simple_dai *set)
 125 {
 126         int ret;
 127
 128         if (set->sysclk) {
 129                 ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
 130                 if (ret && ret != -ENOTSUPP) {
 131                         dev_err(dai->dev, "simple-card: set_sysclk error\n");
 132                         goto err;
 133                 }
 134         }
 135
 136         if (set->slots) {
 137                 ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
 138                                                 set->slots,
 139                                                 set->slot_width);
 140                 if (ret && ret != -ENOTSUPP) {
 141                         dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
 142                         goto err;
 143                 }
 144         }
 145
 146         ret = 0;
 147
 148 err:
 149         return ret;
 150 }
 151
 152 static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 153 {
 154         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
 155         struct snd_soc_dai *codec = rtd->codec_dai;
 156         struct snd_soc_dai *cpu = rtd->cpu_dai;
 157         struct simple_dai_props *dai_props;
 158         int num, ret;
 159
 160         num = rtd - rtd->card->rtd;
 161         dai_props = &priv->dai_props[num];
 162         ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
 163         if (ret < 0)
 164                 return ret;
 165
 166         ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
 167         if (ret < 0)
 168                 return ret;
 169
 170         if (gpio_is_valid(priv->gpio_hp_det)) {
 171                 snd_soc_card_jack_new(rtd->card, "Headphones",
 172                                       SND_JACK_HEADPHONE,
 173                                       &simple_card_hp_jack,
 174                                       simple_card_hp_jack_pins,
 175                                       ARRAY_SIZE(simple_card_hp_jack_pins));
 176
 177                 simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det;
 178                 simple_card_hp_jack_gpio.invert = priv->gpio_hp_det_invert;
 179                 snd_soc_jack_add_gpios(&simple_card_hp_jack, 1,
 180                                        &simple_card_hp_jack_gpio);
 181         }
 182
 183         if (gpio_is_valid(priv->gpio_mic_det)) {
 184                 snd_soc_card_jack_new(rtd->card, "Mic Jack",
 185                                       SND_JACK_MICROPHONE,
 186                                       &simple_card_mic_jack,
 187                                       simple_card_mic_jack_pins,
 188                                       ARRAY_SIZE(simple_card_mic_jack_pins));
 189                 simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det;
 190                 simple_card_mic_jack_gpio.invert = priv->gpio_mic_det_invert;
 191                 snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
 192                                        &simple_card_mic_jack_gpio);
 193         }
 194         return 0;
 195 }
 196
 197 static int
 198 asoc_simple_card_sub_parse_of(struct device_node *np,
 199                               struct asoc_simple_dai *dai,
 200                               struct device_node **p_node,
 201                               const char **name,
 202                               int *args_count)
 203 {
 204         struct of_phandle_args args;
 205         struct clk *clk;
 206         u32 val;
 207         int ret;
 208
 209         /*
 210          * Get node via "sound-dai = <&phandle port>"
 211          * it will be used as xxx_of_node on soc_bind_dai_link()
 212          */
 213         ret = of_parse_phandle_with_args(np, "sound-dai",
 214                                          "#sound-dai-cells", 0, &args);
 215         if (ret)
 216                 return ret;
 217
 218         *p_node = args.np;
 219
 220         if (args_count)
 221                 *args_count = args.args_count;
 222
 223         /* Get dai->name */
 224         ret = snd_soc_of_get_dai_name(np, name);
 225         if (ret < 0)
 226                 return ret;
 227
 228         /* Parse TDM slot */
 229         ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
 230         if (ret)
 231                 return ret;
 232
 233         /*
 234          * Parse dai->sysclk come from "clocks = <&xxx>"
 235          * (if system has common clock)
 236          *  or "system-clock-frequency = <xxx>"
 237          *  or device's module clock.
 238          */
 239         if (of_property_read_bool(np, "clocks")) {
 240                 clk = of_clk_get(np, 0);
 241                 if (IS_ERR(clk)) {
 242                         ret = PTR_ERR(clk);
 243                         return ret;
 244                 }
 245
 246                 dai->sysclk = clk_get_rate(clk);
 247                 dai->clk = clk;
 248         } else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
 249                 dai->sysclk = val;
 250         } else {
 251                 clk = of_clk_get(args.np, 0);
 252                 if (!IS_ERR(clk))
 253                         dai->sysclk = clk_get_rate(clk);
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int asoc_simple_card_parse_daifmt(struct device_node *node,
 260                                          struct simple_card_data *priv,
 261                                          struct device_node *codec,
 262                                          char *prefix, int idx)
 263 {
 264         struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
 265         struct device *dev = simple_priv_to_dev(priv);
 266         struct device_node *bitclkmaster = NULL;
 267         struct device_node *framemaster = NULL;
 268         unsigned int daifmt;
 269
 270         daifmt = snd_soc_of_parse_daifmt(node, prefix,
 271                                          &bitclkmaster, &framemaster);
 272         daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
 273
 274         if (strlen(prefix) && !bitclkmaster && !framemaster) {
 275                 /*
 276                  * No dai-link level and master setting was not found from
 277                  * sound node level, revert back to legacy DT parsing and
 278                  * take the settings from codec node.
 279                  */
 280                 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
 281
 282                 daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
 283                         (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
 284         } else {
 285                 if (codec == bitclkmaster)
 286                         daifmt |= (codec == framemaster) ?
 287                                 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
 288                 else
 289                         daifmt |= (codec == framemaster) ?
 290                                 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
 291         }
 292
 293         dai_link->dai_fmt = daifmt;
 294
 295         of_node_put(bitclkmaster);
 296         of_node_put(framemaster);
 297
 298         return 0;
 299 }
 300
 301 static int asoc_simple_card_dai_link_of(struct device_node *node,
 302                                         struct simple_card_data *priv,
 303                                         int idx,
 304                                         bool is_top_level_node)
 305 {
 306         struct device *dev = simple_priv_to_dev(priv);
 307         struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
 308         struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
 309         struct device_node *cpu = NULL;
 310         struct device_node *codec = NULL;
 311         char *name;
 312         char prop[128];
 313         char *prefix = "";
 314         int ret, cpu_args;
 315
 316         /* For single DAI link & old style of DT node */
 317         if (is_top_level_node)
 318                 prefix = "simple-audio-card,";
 319
 320         snprintf(prop, sizeof(prop), "%scpu", prefix);
 321         cpu = of_get_child_by_name(node, prop);
 322
 323         snprintf(prop, sizeof(prop), "%scodec", prefix);
 324         codec = of_get_child_by_name(node, prop);
 325
 326         if (!cpu || !codec) {
 327                 ret = -EINVAL;
 328                 dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
 329                 goto dai_link_of_err;
 330         }
 331
 332         ret = asoc_simple_card_parse_daifmt(node, priv,
 333                                             codec, prefix, idx);
 334         if (ret < 0)
 335                 goto dai_link_of_err;
 336
 337         ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai,
 338                                             &dai_link->cpu_of_node,
 339                                             &dai_link->cpu_dai_name,
 340                                             &cpu_args);
 341         if (ret < 0)
 342                 goto dai_link_of_err;
 343
 344         ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai,
 345                                             &dai_link->codec_of_node,
 346                                             &dai_link->codec_dai_name, NULL);
 347         if (ret < 0)
 348                 goto dai_link_of_err;
 349
 350         if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
 351                 ret = -EINVAL;
 352                 goto dai_link_of_err;
 353         }
 354
 355         /* Simple Card assumes platform == cpu */
 356         dai_link->platform_of_node = dai_link->cpu_of_node;
 357
 358         /* DAI link name is created from CPU/CODEC dai name */
 359         name = devm_kzalloc(dev,
 360                             strlen(dai_link->cpu_dai_name)   +
 361                             strlen(dai_link->codec_dai_name) + 2,
 362                             GFP_KERNEL);
 363         if (!name) {
 364                 ret = -ENOMEM;
 365                 goto dai_link_of_err;
 366         }
 367
 368         sprintf(name, "%s-%s", dai_link->cpu_dai_name,
 369                                 dai_link->codec_dai_name);
 370         dai_link->name = dai_link->stream_name = name;
 371         dai_link->ops = &asoc_simple_card_ops;
 372         dai_link->init = asoc_simple_card_dai_init;
 373
 374         dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
 375         dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
 376         dev_dbg(dev, "\tcpu : %s / %d\n",
 377                 dai_link->cpu_dai_name,
 378                 dai_props->cpu_dai.sysclk);
 379         dev_dbg(dev, "\tcodec : %s / %d\n",
 380                 dai_link->codec_dai_name,
 381                 dai_props->codec_dai.sysclk);
 382
 383         /*
 384          * In soc_bind_dai_link() will check cpu name after
 385          * of_node matching if dai_link has cpu_dai_name.
 386          * but, it will never match if name was created by
 387          * fmt_single_name() remove cpu_dai_name if cpu_args
 388          * was 0. See:
 389          *      fmt_single_name()
 390          *      fmt_multiple_name()
 391          */
 392         if (!cpu_args)
 393                 dai_link->cpu_dai_name = NULL;
 394
 395 dai_link_of_err:
 396         of_node_put(cpu);
 397         of_node_put(codec);
 398
 399         return ret;
 400 }
 401
 402 static int asoc_simple_card_parse_of(struct device_node *node,
 403                                      struct simple_card_data *priv)
 404 {
 405         struct device *dev = simple_priv_to_dev(priv);
 406         enum of_gpio_flags flags;
 407         u32 val;
 408         int ret;
 409
 410         if (!node)
 411                 return -EINVAL;
 412
 413         /* Parse the card name from DT */
 414         snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
 415
 416         /* The off-codec widgets */
 417         if (of_property_read_bool(node, "simple-audio-card,widgets")) {
 418                 ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
 419                                         "simple-audio-card,widgets");
 420                 if (ret)
 421                         return ret;
 422         }
 423
 424         /* DAPM routes */
 425         if (of_property_read_bool(node, "simple-audio-card,routing")) {
 426                 ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
 427                                         "simple-audio-card,routing");
 428                 if (ret)
 429                         return ret;
 430         }
 431
 432         /* Factor to mclk, used in hw_params() */
 433         ret = of_property_read_u32(node, "simple-audio-card,mclk-fs", &val);
 434         if (ret == 0)
 435                 priv->mclk_fs = val;
 436
 437         dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
 438                 priv->snd_card.name : "");
 439
 440         /* Single/Muti DAI link(s) & New style of DT node */
 441         if (of_get_child_by_name(node, "simple-audio-card,dai-link")) {
 442                 struct device_node *np = NULL;
 443                 int i = 0;
 444
 445                 for_each_child_of_node(node, np) {
 446                         dev_dbg(dev, "\tlink %d:\n", i);
 447                         ret = asoc_simple_card_dai_link_of(np, priv,
 448                                                            i, false);
 449                         if (ret < 0) {
 450                                 of_node_put(np);
 451                                 return ret;
 452                         }
 453                         i++;
 454                 }
 455         } else {
 456                 /* For single DAI link & old style of DT node */
 457                 ret = asoc_simple_card_dai_link_of(node, priv, 0, true);
 458                 if (ret < 0)
 459                         return ret;
 460         }
 461
 462         priv->gpio_hp_det = of_get_named_gpio_flags(node,
 463                                 "simple-audio-card,hp-det-gpio", 0, &flags);
 464         priv->gpio_hp_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
 465         if (priv->gpio_hp_det == -EPROBE_DEFER)
 466                 return -EPROBE_DEFER;
 467
 468         priv->gpio_mic_det = of_get_named_gpio_flags(node,
 469                                 "simple-audio-card,mic-det-gpio", 0, &flags);
 470         priv->gpio_mic_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
 471         if (priv->gpio_mic_det == -EPROBE_DEFER)
 472                 return -EPROBE_DEFER;
 473
 474         if (!priv->snd_card.name)
 475                 priv->snd_card.name = priv->snd_card.dai_link->name;
 476
 477         return 0;
 478 }
 479
 480 /* Decrease the reference count of the device nodes */
 481 static int asoc_simple_card_unref(struct snd_soc_card *card)
 482 {
 483         struct snd_soc_dai_link *dai_link;
 484         int num_links;
 485
 486         for (num_links = 0, dai_link = card->dai_link;
 487              num_links < card->num_links;
 488              num_links++, dai_link++) {
 489                 of_node_put(dai_link->cpu_of_node);
 490                 of_node_put(dai_link->codec_of_node);
 491         }
 492         return 0;
 493 }
 494
 495 static int asoc_simple_card_probe(struct platform_device *pdev)
 496 {
 497         struct simple_card_data *priv;
 498         struct snd_soc_dai_link *dai_link;
 499         struct device_node *np = pdev->dev.of_node;
 500         struct device *dev = &pdev->dev;
 501         int num_links, ret;
 502
 503         /* Get the number of DAI links */
 504         if (np && of_get_child_by_name(np, "simple-audio-card,dai-link"))
 505                 num_links = of_get_child_count(np);
 506         else
 507                 num_links = 1;
 508
 509         /* Allocate the private data and the DAI link array */
 510         priv = devm_kzalloc(dev,
 511                         sizeof(*priv) + sizeof(*dai_link) * num_links,
 512                         GFP_KERNEL);
 513         if (!priv)
 514                 return -ENOMEM;
 515
 516         /* Init snd_soc_card */
 517         priv->snd_card.owner = THIS_MODULE;
 518         priv->snd_card.dev = dev;
 519         dai_link = priv->dai_link;
 520         priv->snd_card.dai_link = dai_link;
 521         priv->snd_card.num_links = num_links;
 522
 523         priv->gpio_hp_det = -ENOENT;
 524         priv->gpio_mic_det = -ENOENT;
 525
 526         /* Get room for the other properties */
 527         priv->dai_props = devm_kzalloc(dev,
 528                         sizeof(*priv->dai_props) * num_links,
 529                         GFP_KERNEL);
 530         if (!priv->dai_props)
 531                 return -ENOMEM;
 532
 533         if (np && of_device_is_available(np)) {
 534
 535                 ret = asoc_simple_card_parse_of(np, priv);
 536                 if (ret < 0) {
 537                         if (ret != -EPROBE_DEFER)
 538                                 dev_err(dev, "parse error %d\n", ret);
 539                         goto err;
 540                 }
 541
 542         } else {
 543                 struct asoc_simple_card_info *cinfo;
 544
 545                 cinfo = dev->platform_data;
 546                 if (!cinfo) {
 547                         dev_err(dev, "no info for asoc-simple-card\n");
 548                         return -EINVAL;
 549                 }
 550
 551                 if (!cinfo->name ||
 552                     !cinfo->codec_dai.name ||
 553                     !cinfo->codec ||
 554                     !cinfo->platform ||
 555                     !cinfo->cpu_dai.name) {
 556                         dev_err(dev, "insufficient asoc_simple_card_info settings\n");
 557                         return -EINVAL;
 558                 }
 559
 560                 priv->snd_card.name     = (cinfo->card) ? cinfo->card : cinfo->name;
 561                 dai_link->name          = cinfo->name;
 562                 dai_link->stream_name   = cinfo->name;
 563                 dai_link->platform_name = cinfo->platform;
 564                 dai_link->codec_name    = cinfo->codec;
 565                 dai_link->cpu_dai_name  = cinfo->cpu_dai.name;
 566                 dai_link->codec_dai_name = cinfo->codec_dai.name;
 567                 dai_link->dai_fmt       = cinfo->daifmt;
 568                 dai_link->init          = asoc_simple_card_dai_init;
 569                 memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
 570                                         sizeof(priv->dai_props->cpu_dai));
 571                 memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
 572                                         sizeof(priv->dai_props->codec_dai));
 573
 574         }
 575
 576         snd_soc_card_set_drvdata(&priv->snd_card, priv);
 577
 578         ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
 579         if (ret >= 0)
 580                 return ret;
 581
 582 err:
 583         asoc_simple_card_unref(&priv->snd_card);
 584         return ret;
 585 }
 586
 587 static int asoc_simple_card_remove(struct platform_device *pdev)
 588 {
 589         struct snd_soc_card *card = platform_get_drvdata(pdev);
 590         struct simple_card_data *priv = snd_soc_card_get_drvdata(card);
 591
 592         if (gpio_is_valid(priv->gpio_hp_det))
 593                 snd_soc_jack_free_gpios(&simple_card_hp_jack, 1,
 594                                         &simple_card_hp_jack_gpio);
 595         if (gpio_is_valid(priv->gpio_mic_det))
 596                 snd_soc_jack_free_gpios(&simple_card_mic_jack, 1,
 597                                         &simple_card_mic_jack_gpio);
 598
 599         return asoc_simple_card_unref(card);
 600 }
 601
 602 static const struct of_device_id asoc_simple_of_match[] = {
 603         { .compatible = "simple-audio-card", },
 604         {},
 605 };
 606 MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
 607
 608 static struct platform_driver asoc_simple_card = {
 609         .driver = {
 610                 .name = "asoc-simple-card",
 611                 .of_match_table = asoc_simple_of_match,
 612         },
 613         .probe = asoc_simple_card_probe,
 614         .remove = asoc_simple_card_remove,
 615 };
 616
 617 module_platform_driver(asoc_simple_card);
 618
 619 MODULE_ALIAS("platform:asoc-simple-card");
 620 MODULE_LICENSE("GPL");
 621 MODULE_DESCRIPTION("ASoC Simple Sound Card");
 622 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");