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                 unsigned int mclk_fs;
  30         } *dai_props;
  31         unsigned int mclk_fs;
  32         int gpio_hp_det;
  33         int gpio_hp_det_invert;
  34         int gpio_mic_det;
  35         int gpio_mic_det_invert;
  36         struct snd_soc_dai_link dai_link[];     /* dynamically allocated */
  37 };
  38
  39 #define simple_priv_to_dev(priv) ((priv)->snd_card.dev)
  40 #define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
  41 #define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
  42
  43 static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
  44 {
  45         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  46         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
  47         struct simple_dai_props *dai_props =
  48                 &priv->dai_props[rtd - rtd->card->rtd];
  49         int ret;
  50
  51         ret = clk_prepare_enable(dai_props->cpu_dai.clk);
  52         if (ret)
  53                 return ret;
  54
  55         ret = clk_prepare_enable(dai_props->codec_dai.clk);
  56         if (ret)
  57                 clk_disable_unprepare(dai_props->cpu_dai.clk);
  58
  59         return ret;
  60 }
  61
  62 static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
  63 {
  64         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  65         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
  66         struct simple_dai_props *dai_props =
  67                 &priv->dai_props[rtd - rtd->card->rtd];
  68
  69         clk_disable_unprepare(dai_props->cpu_dai.clk);
  70
  71         clk_disable_unprepare(dai_props->codec_dai.clk);
  72 }
  73
  74 static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
  75                                       struct snd_pcm_hw_params *params)
  76 {
  77         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  78         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  79         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
  80         struct simple_dai_props *dai_props =
  81                 &priv->dai_props[rtd - rtd->card->rtd];
  82         unsigned int mclk, mclk_fs = 0;
  83         int ret = 0;
  84
  85         if (priv->mclk_fs)
  86                 mclk_fs = priv->mclk_fs;
  87         else if (dai_props->mclk_fs)
  88                 mclk_fs = dai_props->mclk_fs;
  89
  90         if (mclk_fs) {
  91                 mclk = params_rate(params) * mclk_fs;
  92                 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  93                                              SND_SOC_CLOCK_IN);
  94         }
  95
  96         return ret;
  97 }
  98
  99 static struct snd_soc_ops asoc_simple_card_ops = {
 100         .startup = asoc_simple_card_startup,
 101         .shutdown = asoc_simple_card_shutdown,
 102         .hw_params = asoc_simple_card_hw_params,
 103 };
 104
 105 static struct snd_soc_jack simple_card_hp_jack;
 106 static struct snd_soc_jack_pin simple_card_hp_jack_pins[] = {
 107         {
 108                 .pin = "Headphones",
 109                 .mask = SND_JACK_HEADPHONE,
 110         },
 111 };
 112 static struct snd_soc_jack_gpio simple_card_hp_jack_gpio = {
 113         .name = "Headphone detection",
 114         .report = SND_JACK_HEADPHONE,
 115         .debounce_time = 150,
 116 };
 117
 118 static struct snd_soc_jack simple_card_mic_jack;
 119 static struct snd_soc_jack_pin simple_card_mic_jack_pins[] = {
 120         {
 121                 .pin = "Mic Jack",
 122                 .mask = SND_JACK_MICROPHONE,
 123         },
 124 };
 125 static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = {
 126         .name = "Mic detection",
 127         .report = SND_JACK_MICROPHONE,
 128         .debounce_time = 150,
 129 };
 130
 131 static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
 132                                        struct asoc_simple_dai *set)
 133 {
 134         int ret;
 135
 136         if (set->sysclk) {
 137                 ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
 138                 if (ret && ret != -ENOTSUPP) {
 139                         dev_err(dai->dev, "simple-card: set_sysclk error\n");
 140                         goto err;
 141                 }
 142         }
 143
 144         if (set->slots) {
 145                 ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
 146                                                 set->slots,
 147                                                 set->slot_width);
 148                 if (ret && ret != -ENOTSUPP) {
 149                         dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
 150                         goto err;
 151                 }
 152         }
 153
 154         ret = 0;
 155
 156 err:
 157         return ret;
 158 }
 159
 160 static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 161 {
 162         struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
 163         struct snd_soc_dai *codec = rtd->codec_dai;
 164         struct snd_soc_dai *cpu = rtd->cpu_dai;
 165         struct simple_dai_props *dai_props;
 166         int num, ret;
 167
 168         num = rtd - rtd->card->rtd;
 169         dai_props = &priv->dai_props[num];
 170         ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
 171         if (ret < 0)
 172                 return ret;
 173
 174         ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
 175         if (ret < 0)
 176                 return ret;
 177
 178         if (gpio_is_valid(priv->gpio_hp_det)) {
 179                 snd_soc_card_jack_new(rtd->card, "Headphones",
 180                                       SND_JACK_HEADPHONE,
 181                                       &simple_card_hp_jack,
 182                                       simple_card_hp_jack_pins,
 183                                       ARRAY_SIZE(simple_card_hp_jack_pins));
 184
 185                 simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det;
 186                 simple_card_hp_jack_gpio.invert = priv->gpio_hp_det_invert;
 187                 snd_soc_jack_add_gpios(&simple_card_hp_jack, 1,
 188                                        &simple_card_hp_jack_gpio);
 189         }
 190
 191         if (gpio_is_valid(priv->gpio_mic_det)) {
 192                 snd_soc_card_jack_new(rtd->card, "Mic Jack",
 193                                       SND_JACK_MICROPHONE,
 194                                       &simple_card_mic_jack,
 195                                       simple_card_mic_jack_pins,
 196                                       ARRAY_SIZE(simple_card_mic_jack_pins));
 197                 simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det;
 198                 simple_card_mic_jack_gpio.invert = priv->gpio_mic_det_invert;
 199                 snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
 200                                        &simple_card_mic_jack_gpio);
 201         }
 202         return 0;
 203 }
 204
 205 static int
 206 asoc_simple_card_sub_parse_of(struct device_node *np,
 207                               struct asoc_simple_dai *dai,
 208                               struct device_node **p_node,
 209                               const char **name,
 210                               int *args_count)
 211 {
 212         struct of_phandle_args args;
 213         struct clk *clk;
 214         u32 val;
 215         int ret;
 216
 217         /*
 218          * Get node via "sound-dai = <&phandle port>"
 219          * it will be used as xxx_of_node on soc_bind_dai_link()
 220          */
 221         ret = of_parse_phandle_with_args(np, "sound-dai",
 222                                          "#sound-dai-cells", 0, &args);
 223         if (ret)
 224                 return ret;
 225
 226         *p_node = args.np;
 227
 228         if (args_count)
 229                 *args_count = args.args_count;
 230
 231         /* Get dai->name */
 232         ret = snd_soc_of_get_dai_name(np, name);
 233         if (ret < 0)
 234                 return ret;
 235
 236         /* Parse TDM slot */
 237         ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
 238         if (ret)
 239                 return ret;
 240
 241         /*
 242          * Parse dai->sysclk come from "clocks = <&xxx>"
 243          * (if system has common clock)
 244          *  or "system-clock-frequency = <xxx>"
 245          *  or device's module clock.
 246          */
 247         if (of_property_read_bool(np, "clocks")) {
 248                 clk = of_clk_get(np, 0);
 249                 if (IS_ERR(clk)) {
 250                         ret = PTR_ERR(clk);
 251                         return ret;
 252                 }
 253
 254                 dai->sysclk = clk_get_rate(clk);
 255                 dai->clk = clk;
 256         } else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
 257                 dai->sysclk = val;
 258         } else {
 259                 clk = of_clk_get(args.np, 0);
 260                 if (!IS_ERR(clk))
 261                         dai->sysclk = clk_get_rate(clk);
 262         }
 263
 264         return 0;
 265 }
 266
 267 static int asoc_simple_card_parse_daifmt(struct device_node *node,
 268                                          struct simple_card_data *priv,
 269                                          struct device_node *codec,
 270                                          char *prefix, int idx)
 271 {
 272         struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
 273         struct device *dev = simple_priv_to_dev(priv);
 274         struct device_node *bitclkmaster = NULL;
 275         struct device_node *framemaster = NULL;
 276         unsigned int daifmt;
 277
 278         daifmt = snd_soc_of_parse_daifmt(node, prefix,
 279                                          &bitclkmaster, &framemaster);
 280         daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
 281
 282         if (strlen(prefix) && !bitclkmaster && !framemaster) {
 283                 /*
 284                  * No dai-link level and master setting was not found from
 285                  * sound node level, revert back to legacy DT parsing and
 286                  * take the settings from codec node.
 287                  */
 288                 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
 289
 290                 daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
 291                         (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
 292         } else {
 293                 if (codec == bitclkmaster)
 294                         daifmt |= (codec == framemaster) ?
 295                                 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
 296                 else
 297                         daifmt |= (codec == framemaster) ?
 298                                 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
 299         }
 300
 301         dai_link->dai_fmt = daifmt;
 302
 303         of_node_put(bitclkmaster);
 304         of_node_put(framemaster);
 305
 306         return 0;
 307 }
 308
 309 static int asoc_simple_card_dai_link_of(struct device_node *node,
 310                                         struct simple_card_data *priv,
 311                                         int idx,
 312                                         bool is_top_level_node)
 313 {
 314         struct device *dev = simple_priv_to_dev(priv);
 315         struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
 316         struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
 317         struct device_node *cpu = NULL;
 318         struct device_node *plat = NULL;
 319         struct device_node *codec = NULL;
 320         char *name;
 321         char prop[128];
 322         char *prefix = "";
 323         int ret, cpu_args;
 324         u32 val;
 325
 326         /* For single DAI link & old style of DT node */
 327         if (is_top_level_node)
 328                 prefix = "simple-audio-card,";
 329
 330         snprintf(prop, sizeof(prop), "%scpu", prefix);
 331         cpu = of_get_child_by_name(node, prop);
 332
 333         snprintf(prop, sizeof(prop), "%splat", prefix);
 334         plat = of_get_child_by_name(node, prop);
 335
 336         snprintf(prop, sizeof(prop), "%scodec", prefix);
 337         codec = of_get_child_by_name(node, prop);
 338
 339         if (!cpu || !codec) {
 340                 ret = -EINVAL;
 341                 dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
 342                 goto dai_link_of_err;
 343         }
 344
 345         ret = asoc_simple_card_parse_daifmt(node, priv,
 346                                             codec, prefix, idx);
 347         if (ret < 0)
 348                 goto dai_link_of_err;
 349
 350         if (!of_property_read_u32(node, "mclk-fs", &val))
 351                 dai_props->mclk_fs = val;
 352
 353         ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai,
 354                                             &dai_link->cpu_of_node,
 355                                             &dai_link->cpu_dai_name,
 356                                             &cpu_args);
 357         if (ret < 0)
 358                 goto dai_link_of_err;
 359
 360         ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai,
 361                                             &dai_link->codec_of_node,
 362                                             &dai_link->codec_dai_name, NULL);
 363         if (ret < 0)
 364                 goto dai_link_of_err;
 365
 366         if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
 367                 ret = -EINVAL;
 368                 goto dai_link_of_err;
 369         }
 370
 371         if (plat) {
 372                 struct of_phandle_args args;
 373
 374                 ret = of_parse_phandle_with_args(plat, "sound-dai",
 375                                                  "#sound-dai-cells", 0, &args);
 376                 dai_link->platform_of_node = args.np;
 377         } else {
 378                 /* Assumes platform == cpu */
 379                 dai_link->platform_of_node = dai_link->cpu_of_node;
 380         }
 381
 382         /* DAI link name is created from CPU/CODEC dai name */
 383         name = devm_kzalloc(dev,
 384                             strlen(dai_link->cpu_dai_name)   +
 385                             strlen(dai_link->codec_dai_name) + 2,
 386                             GFP_KERNEL);
 387         if (!name) {
 388                 ret = -ENOMEM;
 389                 goto dai_link_of_err;
 390         }
 391
 392         sprintf(name, "%s-%s", dai_link->cpu_dai_name,
 393                                 dai_link->codec_dai_name);
 394         dai_link->name = dai_link->stream_name = name;
 395         dai_link->ops = &asoc_simple_card_ops;
 396         dai_link->init = asoc_simple_card_dai_init;
 397
 398         dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
 399         dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
 400         dev_dbg(dev, "\tcpu : %s / %d\n",
 401                 dai_link->cpu_dai_name,
 402                 dai_props->cpu_dai.sysclk);
 403         dev_dbg(dev, "\tcodec : %s / %d\n",
 404                 dai_link->codec_dai_name,
 405                 dai_props->codec_dai.sysclk);
 406
 407         /*
 408          * In soc_bind_dai_link() will check cpu name after
 409          * of_node matching if dai_link has cpu_dai_name.
 410          * but, it will never match if name was created by
 411          * fmt_single_name() remove cpu_dai_name if cpu_args
 412          * was 0. See:
 413          *      fmt_single_name()
 414          *      fmt_multiple_name()
 415          */
 416         if (!cpu_args)
 417                 dai_link->cpu_dai_name = NULL;
 418
 419 dai_link_of_err:
 420         of_node_put(cpu);
 421         of_node_put(codec);
 422
 423         return ret;
 424 }
 425
 426 static int asoc_simple_card_parse_of(struct device_node *node,
 427                                      struct simple_card_data *priv)
 428 {
 429         struct device *dev = simple_priv_to_dev(priv);
 430         enum of_gpio_flags flags;
 431         u32 val;
 432         int ret;
 433
 434         if (!node)
 435                 return -EINVAL;
 436
 437         /* Parse the card name from DT */
 438         snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
 439
 440         /* The off-codec widgets */
 441         if (of_property_read_bool(node, "simple-audio-card,widgets")) {
 442                 ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
 443                                         "simple-audio-card,widgets");
 444                 if (ret)
 445                         return ret;
 446         }
 447
 448         /* DAPM routes */
 449         if (of_property_read_bool(node, "simple-audio-card,routing")) {
 450                 ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
 451                                         "simple-audio-card,routing");
 452                 if (ret)
 453                         return ret;
 454         }
 455
 456         /* Factor to mclk, used in hw_params() */
 457         ret = of_property_read_u32(node, "simple-audio-card,mclk-fs", &val);
 458         if (ret == 0)
 459                 priv->mclk_fs = val;
 460
 461         dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
 462                 priv->snd_card.name : "");
 463
 464         /* Single/Muti DAI link(s) & New style of DT node */
 465         if (of_get_child_by_name(node, "simple-audio-card,dai-link")) {
 466                 struct device_node *np = NULL;
 467                 int i = 0;
 468
 469                 for_each_child_of_node(node, np) {
 470                         dev_dbg(dev, "\tlink %d:\n", i);
 471                         ret = asoc_simple_card_dai_link_of(np, priv,
 472                                                            i, false);
 473                         if (ret < 0) {
 474                                 of_node_put(np);
 475                                 return ret;
 476                         }
 477                         i++;
 478                 }
 479         } else {
 480                 /* For single DAI link & old style of DT node */
 481                 ret = asoc_simple_card_dai_link_of(node, priv, 0, true);
 482                 if (ret < 0)
 483                         return ret;
 484         }
 485
 486         priv->gpio_hp_det = of_get_named_gpio_flags(node,
 487                                 "simple-audio-card,hp-det-gpio", 0, &flags);
 488         priv->gpio_hp_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
 489         if (priv->gpio_hp_det == -EPROBE_DEFER)
 490                 return -EPROBE_DEFER;
 491
 492         priv->gpio_mic_det = of_get_named_gpio_flags(node,
 493                                 "simple-audio-card,mic-det-gpio", 0, &flags);
 494         priv->gpio_mic_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
 495         if (priv->gpio_mic_det == -EPROBE_DEFER)
 496                 return -EPROBE_DEFER;
 497
 498         if (!priv->snd_card.name)
 499                 priv->snd_card.name = priv->snd_card.dai_link->name;
 500
 501         return 0;
 502 }
 503
 504 /* Decrease the reference count of the device nodes */
 505 static int asoc_simple_card_unref(struct snd_soc_card *card)
 506 {
 507         struct snd_soc_dai_link *dai_link;
 508         int num_links;
 509
 510         for (num_links = 0, dai_link = card->dai_link;
 511              num_links < card->num_links;
 512              num_links++, dai_link++) {
 513                 of_node_put(dai_link->cpu_of_node);
 514                 of_node_put(dai_link->codec_of_node);
 515         }
 516         return 0;
 517 }
 518
 519 static int asoc_simple_card_probe(struct platform_device *pdev)
 520 {
 521         struct simple_card_data *priv;
 522         struct snd_soc_dai_link *dai_link;
 523         struct device_node *np = pdev->dev.of_node;
 524         struct device *dev = &pdev->dev;
 525         int num_links, ret;
 526
 527         /* Get the number of DAI links */
 528         if (np && of_get_child_by_name(np, "simple-audio-card,dai-link"))
 529                 num_links = of_get_child_count(np);
 530         else
 531                 num_links = 1;
 532
 533         /* Allocate the private data and the DAI link array */
 534         priv = devm_kzalloc(dev,
 535                         sizeof(*priv) + sizeof(*dai_link) * num_links,
 536                         GFP_KERNEL);
 537         if (!priv)
 538                 return -ENOMEM;
 539
 540         /* Init snd_soc_card */
 541         priv->snd_card.owner = THIS_MODULE;
 542         priv->snd_card.dev = dev;
 543         dai_link = priv->dai_link;
 544         priv->snd_card.dai_link = dai_link;
 545         priv->snd_card.num_links = num_links;
 546
 547         priv->gpio_hp_det = -ENOENT;
 548         priv->gpio_mic_det = -ENOENT;
 549
 550         /* Get room for the other properties */
 551         priv->dai_props = devm_kzalloc(dev,
 552                         sizeof(*priv->dai_props) * num_links,
 553                         GFP_KERNEL);
 554         if (!priv->dai_props)
 555                 return -ENOMEM;
 556
 557         if (np && of_device_is_available(np)) {
 558
 559                 ret = asoc_simple_card_parse_of(np, priv);
 560                 if (ret < 0) {
 561                         if (ret != -EPROBE_DEFER)
 562                                 dev_err(dev, "parse error %d\n", ret);
 563                         goto err;
 564                 }
 565
 566         } else {
 567                 struct asoc_simple_card_info *cinfo;
 568
 569                 cinfo = dev->platform_data;
 570                 if (!cinfo) {
 571                         dev_err(dev, "no info for asoc-simple-card\n");
 572                         return -EINVAL;
 573                 }
 574
 575                 if (!cinfo->name ||
 576                     !cinfo->codec_dai.name ||
 577                     !cinfo->codec ||
 578                     !cinfo->platform ||
 579                     !cinfo->cpu_dai.name) {
 580                         dev_err(dev, "insufficient asoc_simple_card_info settings\n");
 581                         return -EINVAL;
 582                 }
 583
 584                 priv->snd_card.name     = (cinfo->card) ? cinfo->card : cinfo->name;
 585                 dai_link->name          = cinfo->name;
 586                 dai_link->stream_name   = cinfo->name;
 587                 dai_link->platform_name = cinfo->platform;
 588                 dai_link->codec_name    = cinfo->codec;
 589                 dai_link->cpu_dai_name  = cinfo->cpu_dai.name;
 590                 dai_link->codec_dai_name = cinfo->codec_dai.name;
 591                 dai_link->dai_fmt       = cinfo->daifmt;
 592                 dai_link->init          = asoc_simple_card_dai_init;
 593                 memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
 594                                         sizeof(priv->dai_props->cpu_dai));
 595                 memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
 596                                         sizeof(priv->dai_props->codec_dai));
 597
 598         }
 599
 600         snd_soc_card_set_drvdata(&priv->snd_card, priv);
 601
 602         ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
 603         if (ret >= 0)
 604                 return ret;
 605
 606 err:
 607         asoc_simple_card_unref(&priv->snd_card);
 608         return ret;
 609 }
 610
 611 static int asoc_simple_card_remove(struct platform_device *pdev)
 612 {
 613         struct snd_soc_card *card = platform_get_drvdata(pdev);
 614         struct simple_card_data *priv = snd_soc_card_get_drvdata(card);
 615
 616         if (gpio_is_valid(priv->gpio_hp_det))
 617                 snd_soc_jack_free_gpios(&simple_card_hp_jack, 1,
 618                                         &simple_card_hp_jack_gpio);
 619         if (gpio_is_valid(priv->gpio_mic_det))
 620                 snd_soc_jack_free_gpios(&simple_card_mic_jack, 1,
 621                                         &simple_card_mic_jack_gpio);
 622
 623         return asoc_simple_card_unref(card);
 624 }
 625
 626 static const struct of_device_id asoc_simple_of_match[] = {
 627         { .compatible = "simple-audio-card", },
 628         {},
 629 };
 630 MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
 631
 632 static struct platform_driver asoc_simple_card = {
 633         .driver = {
 634                 .name = "asoc-simple-card",
 635                 .of_match_table = asoc_simple_of_match,
 636         },
 637         .probe = asoc_simple_card_probe,
 638         .remove = asoc_simple_card_remove,
 639 };
 640
 641 module_platform_driver(asoc_simple_card);
 642
 643 MODULE_ALIAS("platform:asoc-simple-card");
 644 MODULE_LICENSE("GPL");
 645 MODULE_DESCRIPTION("ASoC Simple Sound Card");
 646 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");