sound/soc/seeed/seeed-voicecard.c

   1 /*
   2  * SEEED voice card
   3  *
   4  * (C) Copyright 2017-2018
   5  * Seeed Technology Co., Ltd. <www.seeedstudio.com>
   6  *
   7  * base on ASoC simple sound card support
   8  *
   9  * Copyright (C) 2012 Renesas Solutions Corp.
  10  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16 /* #undef DEBUG */
  17 #include <linux/version.h>
  18 #include <linux/clk.h>
  19 #include <linux/device.h>
  20 #include <linux/gpio.h>
  21 #include <linux/module.h>
  22 #include <linux/of.h>
  23 #include <linux/of_gpio.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/string.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dai.h>
  28 #include <sound/simple_card_utils.h>
  29 //#include <sound/soc/codecs/ac10x.h>
  30 #include "../codecs/ac10x.h"
  31
  32
  33 /*
  34  * single codec:
  35  *      0 - allow multi codec
  36  *      1 - yes
  37  */
  38 #define _SINGLE_CODEC           1
  39
  40 struct seeed_card_data {
  41         struct snd_soc_card snd_card;
  42         struct seeed_dai_props {
  43                 struct asoc_simple_dai cpu_dai;
  44                 struct asoc_simple_dai codec_dai;
  45                 unsigned int mclk_fs;
  46         } *dai_props;
  47         unsigned int mclk_fs;
  48         unsigned channels_playback_default;
  49         unsigned channels_playback_override;
  50         unsigned channels_capture_default;
  51         unsigned channels_capture_override;
  52         struct snd_soc_dai_link *dai_link;
  53         #if CONFIG_AC10X_TRIG_LOCK
  54         spinlock_t lock;
  55         #endif
  56         struct work_struct work_codec_clk;
  57         #define TRY_STOP_MAX    3
  58         int try_stop;
  59 };
  60
  61 struct seeed_card_info {
  62         const char *name;
  63         const char *card;
  64         const char *codec;
  65         const char *platform;
  66
  67         unsigned int daifmt;
  68         struct asoc_simple_dai cpu_dai;
  69         struct asoc_simple_dai codec_dai;
  70 };
  71
  72 #define seeed_priv_to_dev(priv) ((priv)->snd_card.dev)
  73 #define seeed_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i))
  74 #define seeed_priv_to_props(priv, i) ((priv)->dai_props + (i))
  75
  76 #define DAI     "sound-dai"
  77 #define CELL    "#sound-dai-cells"
  78 #define PREFIX  "seeed-voice-card,"
  79
  80 static int seeed_voice_card_startup(struct snd_pcm_substream *substream)
  81 {
  82         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  83         struct seeed_card_data *priv =  snd_soc_card_get_drvdata(rtd->card);
  84         struct seeed_dai_props *dai_props =
  85                 seeed_priv_to_props(priv, rtd->num);
  86         int ret;
  87
  88         ret = clk_prepare_enable(dai_props->cpu_dai.clk);
  89         if (ret)
  90                 return ret;
  91
  92         ret = clk_prepare_enable(dai_props->codec_dai.clk);
  93         if (ret)
  94                 clk_disable_unprepare(dai_props->cpu_dai.clk);
  95
  96         if (rtd->cpu_dai->driver->playback.channels_min) {
  97                 priv->channels_playback_default = rtd->cpu_dai->driver->playback.channels_min;
  98         }
  99         if (rtd->cpu_dai->driver->capture.channels_min) {
 100                 priv->channels_capture_default = rtd->cpu_dai->driver->capture.channels_min;
 101         }
 102         rtd->cpu_dai->driver->playback.channels_min = priv->channels_playback_override;
 103         rtd->cpu_dai->driver->playback.channels_max = priv->channels_playback_override;
 104         rtd->cpu_dai->driver->capture.channels_min = priv->channels_capture_override;
 105         rtd->cpu_dai->driver->capture.channels_max = priv->channels_capture_override;
 106
 107         return ret;
 108 }
 109
 110 static void seeed_voice_card_shutdown(struct snd_pcm_substream *substream)
 111 {
 112         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 113         struct seeed_card_data *priv =  snd_soc_card_get_drvdata(rtd->card);
 114         struct seeed_dai_props *dai_props =
 115                 seeed_priv_to_props(priv, rtd->num);
 116
 117         rtd->cpu_dai->driver->playback.channels_min = priv->channels_playback_default;
 118         rtd->cpu_dai->driver->playback.channels_max = priv->channels_playback_default;
 119         rtd->cpu_dai->driver->capture.channels_min = priv->channels_capture_default;
 120         rtd->cpu_dai->driver->capture.channels_max = priv->channels_capture_default;
 121
 122         clk_disable_unprepare(dai_props->cpu_dai.clk);
 123
 124         clk_disable_unprepare(dai_props->codec_dai.clk);
 125 }
 126
 127 static int seeed_voice_card_hw_params(struct snd_pcm_substream *substream,
 128                                       struct snd_pcm_hw_params *params)
 129 {
 130         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 131         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 132         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 133         struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
 134         struct seeed_dai_props *dai_props =
 135                 seeed_priv_to_props(priv, rtd->num);
 136         unsigned int mclk, mclk_fs = 0;
 137         int ret = 0;
 138
 139         if (priv->mclk_fs)
 140                 mclk_fs = priv->mclk_fs;
 141         else if (dai_props->mclk_fs)
 142                 mclk_fs = dai_props->mclk_fs;
 143
 144         if (mclk_fs) {
 145                 mclk = params_rate(params) * mclk_fs;
 146                 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 147                                              SND_SOC_CLOCK_IN);
 148                 if (ret && ret != -ENOTSUPP)
 149                         goto err;
 150
 151                 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
 152                                              SND_SOC_CLOCK_OUT);
 153                 if (ret && ret != -ENOTSUPP)
 154                         goto err;
 155         }
 156         return 0;
 157 err:
 158         return ret;
 159 }
 160
 161 #define _SET_CLOCK_CNT          2
 162 static int (* _set_clock[_SET_CLOCK_CNT])(int y_start_n_stop);
 163
 164 int seeed_voice_card_register_set_clock(int stream, int (*set_clock)(int)) {
 165         if (! _set_clock[stream]) {
 166                 _set_clock[stream] = set_clock;
 167         }
 168         return 0;
 169 }
 170 EXPORT_SYMBOL(seeed_voice_card_register_set_clock);
 171
 172 /*
 173  * work_cb_codec_clk: clear audio codec inner clock.
 174  */
 175 static void work_cb_codec_clk(struct work_struct *work)
 176 {
 177         struct seeed_card_data *priv = container_of(work, struct seeed_card_data, work_codec_clk);
 178         int r = 0;
 179
 180         if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) {
 181                 r = r || _set_clock[SNDRV_PCM_STREAM_CAPTURE](0);
 182         }
 183         if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) {
 184                 r = r || _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0);
 185         }
 186
 187         if (r && priv->try_stop++ < TRY_STOP_MAX) {
 188                 if (0 != schedule_work(&priv->work_codec_clk)) {}
 189         }
 190         return;
 191 }
 192
 193 static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd)
 194 {
 195         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 196         struct snd_soc_dai *dai = rtd->codec_dai;
 197         struct seeed_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
 198         #if CONFIG_AC10X_TRIG_LOCK
 199         unsigned long flags;
 200         #endif
 201         int ret = 0;
 202
 203         dev_dbg(rtd->card->dev, "%s() stream=%s  cmd=%d play:%d, capt:%d\n",
 204                 __FUNCTION__, snd_pcm_stream_str(substream), cmd,
 205                 dai->playback_active, dai->capture_active);
 206
 207         switch (cmd) {
 208         case SNDRV_PCM_TRIGGER_START:
 209         case SNDRV_PCM_TRIGGER_RESUME:
 210         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 211                 if (cancel_work_sync(&priv->work_codec_clk) != 0) {}
 212                 #if CONFIG_AC10X_TRIG_LOCK
 213                 /* I know it will degrades performance, but I have no choice */
 214                 spin_lock_irqsave(&priv->lock, flags);
 215                 #endif
 216                 if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) _set_clock[SNDRV_PCM_STREAM_CAPTURE](1);
 217                 if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](1);
 218                 #if CONFIG_AC10X_TRIG_LOCK
 219                 spin_unlock_irqrestore(&priv->lock, flags);
 220                 #endif
 221                 break;
 222
 223         case SNDRV_PCM_TRIGGER_STOP:
 224         case SNDRV_PCM_TRIGGER_SUSPEND:
 225         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 226                 /* capture channel resync, if overrun */
 227                 if (dai->capture_active && substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 228                         break;
 229                 }
 230
 231                 /* interrupt environment */
 232                 if (in_irq() || in_nmi() || in_serving_softirq()) {
 233                         priv->try_stop = 0;
 234                         if (0 != schedule_work(&priv->work_codec_clk)) {
 235                         }
 236                 } else {
 237                         if (_set_clock[SNDRV_PCM_STREAM_CAPTURE]) _set_clock[SNDRV_PCM_STREAM_CAPTURE](0);
 238                         if (_set_clock[SNDRV_PCM_STREAM_PLAYBACK]) _set_clock[SNDRV_PCM_STREAM_PLAYBACK](0);
 239                 }
 240                 break;
 241         default:
 242                 ret = -EINVAL;
 243         }
 244
 245         return ret;
 246 }
 247
 248 static struct snd_soc_ops seeed_voice_card_ops = {
 249         .startup = seeed_voice_card_startup,
 250         .shutdown = seeed_voice_card_shutdown,
 251         .hw_params = seeed_voice_card_hw_params,
 252         .trigger = seeed_voice_card_trigger,
 253 };
 254
 255 static int seeed_voice_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 256 {
 257         struct seeed_card_data *priv =  snd_soc_card_get_drvdata(rtd->card);
 258         struct snd_soc_dai *codec = rtd->codec_dai;
 259         struct snd_soc_dai *cpu = rtd->cpu_dai;
 260         struct seeed_dai_props *dai_props =
 261                 seeed_priv_to_props(priv, rtd->num);
 262         int ret;
 263
 264         ret = asoc_simple_card_init_dai(codec, &dai_props->codec_dai);
 265         if (ret < 0)
 266                 return ret;
 267
 268         ret = asoc_simple_card_init_dai(cpu, &dai_props->cpu_dai);
 269         if (ret < 0)
 270                 return ret;
 271
 272         return 0;
 273 }
 274
 275 static int seeed_voice_card_dai_link_of(struct device_node *node,
 276                                         struct seeed_card_data *priv,
 277                                         int idx,
 278                                         bool is_top_level_node)
 279 {
 280         struct device *dev = seeed_priv_to_dev(priv);
 281         struct snd_soc_dai_link *dai_link = seeed_priv_to_link(priv, idx);
 282         struct seeed_dai_props *dai_props = seeed_priv_to_props(priv, idx);
 283         struct asoc_simple_dai *cpu_dai = &dai_props->cpu_dai;
 284         struct asoc_simple_dai *codec_dai = &dai_props->codec_dai;
 285         struct device_node *cpu = NULL;
 286         struct device_node *plat = NULL;
 287         struct device_node *codec = NULL;
 288         char prop[128];
 289         char *prefix = "";
 290         int ret, single_cpu;
 291
 292         /* For single DAI link & old style of DT node */
 293         if (is_top_level_node)
 294                 prefix = PREFIX;
 295
 296         snprintf(prop, sizeof(prop), "%scpu", prefix);
 297         cpu = of_get_child_by_name(node, prop);
 298
 299         snprintf(prop, sizeof(prop), "%splat", prefix);
 300         plat = of_get_child_by_name(node, prop);
 301
 302         snprintf(prop, sizeof(prop), "%scodec", prefix);
 303         codec = of_get_child_by_name(node, prop);
 304
 305         if (!cpu || !codec) {
 306                 ret = -EINVAL;
 307                 dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
 308                 goto dai_link_of_err;
 309         }
 310
 311         ret = asoc_simple_card_parse_daifmt(dev, node, codec,
 312                                             prefix, &dai_link->dai_fmt);
 313         if (ret < 0)
 314                 goto dai_link_of_err;
 315
 316         of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs);
 317
 318         ret = asoc_simple_card_parse_cpu(cpu, dai_link,
 319                                          DAI, CELL, &single_cpu);
 320         if (ret < 0)
 321                 goto dai_link_of_err;
 322
 323         #if _SINGLE_CODEC
 324         ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL);
 325         if (ret < 0)
 326                 goto dai_link_of_err;
 327         #else
 328         ret = snd_soc_of_get_dai_link_codecs(dev, codec, dai_link);
 329         if (ret < 0) {
 330                 dev_err(dev, "parse codec info error %d\n", ret);
 331                 goto dai_link_of_err;
 332         }
 333         dev_dbg(dev, "dai_link num_codecs = %d\n", dai_link->num_codecs);
 334         #endif
 335
 336         ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL);
 337         if (ret < 0)
 338                 goto dai_link_of_err;
 339
 340         ret = snd_soc_of_parse_tdm_slot(cpu,    &cpu_dai->tx_slot_mask,
 341                                                 &cpu_dai->rx_slot_mask,
 342                                                 &cpu_dai->slots,
 343                                                 &cpu_dai->slot_width);
 344         dev_dbg(dev, "cpu_dai : slot,width,tx,rx = %d,%d,%d,%d\n",
 345                         cpu_dai->slots, cpu_dai->slot_width,
 346                         cpu_dai->tx_slot_mask, cpu_dai->rx_slot_mask
 347                         );
 348         if (ret < 0)
 349                 goto dai_link_of_err;
 350
 351         ret = snd_soc_of_parse_tdm_slot(codec,  &codec_dai->tx_slot_mask,
 352                                                 &codec_dai->rx_slot_mask,
 353                                                 &codec_dai->slots,
 354                                                 &codec_dai->slot_width);
 355         if (ret < 0)
 356                 goto dai_link_of_err;
 357
 358         #if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0)
 359         ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai);
 360         #else
 361         ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai);
 362         #endif
 363         if (ret < 0)
 364                 goto dai_link_of_err;
 365
 366         #if LINUX_VERSION_CODE <= KERNEL_VERSION(4,10,0)
 367         ret = asoc_simple_card_parse_clk_codec(codec, dai_link, codec_dai);
 368         #else
 369         ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai);
 370         #endif
 371         if (ret < 0)
 372                 goto dai_link_of_err;
 373
 374         #if _SINGLE_CODEC
 375         ret = asoc_simple_card_canonicalize_dailink(dai_link);
 376         if (ret < 0)
 377                 goto dai_link_of_err;
 378         #endif
 379
 380         ret = asoc_simple_card_set_dailink_name(dev, dai_link,
 381                                                 "%s-%s",
 382                                                 dai_link->cpu_dai_name,
 383                                                 #if _SINGLE_CODEC
 384                                                 dai_link->codec_dai_name
 385                                                 #else
 386                                                 dai_link->codecs[0].dai_name
 387                                                 #endif
 388         );
 389         if (ret < 0)
 390                 goto dai_link_of_err;
 391
 392         dai_link->ops = &seeed_voice_card_ops;
 393         dai_link->init = seeed_voice_card_dai_init;
 394
 395         dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
 396         dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
 397         dev_dbg(dev, "\tcpu : %s / %d\n",
 398                 dai_link->cpu_dai_name,
 399                 dai_props->cpu_dai.sysclk);
 400         dev_dbg(dev, "\tcodec : %s / %d\n",
 401                 #if _SINGLE_CODEC
 402                 dai_link->codec_dai_name,
 403                 #else
 404                 dai_link->codecs[0].dai_name,
 405                 #endif
 406                 dai_props->codec_dai.sysclk);
 407
 408         asoc_simple_card_canonicalize_cpu(dai_link, single_cpu);
 409
 410 dai_link_of_err:
 411         of_node_put(cpu);
 412         of_node_put(codec);
 413
 414         return ret;
 415 }
 416
 417 static int seeed_voice_card_parse_aux_devs(struct device_node *node,
 418                                            struct seeed_card_data *priv)
 419 {
 420         struct device *dev = seeed_priv_to_dev(priv);
 421         struct device_node *aux_node;
 422         int i, n, len;
 423
 424         if (!of_find_property(node, PREFIX "aux-devs", &len))
 425                 return 0;               /* Ok to have no aux-devs */
 426
 427         n = len / sizeof(__be32);
 428         if (n <= 0)
 429                 return -EINVAL;
 430
 431         priv->snd_card.aux_dev = devm_kzalloc(dev,
 432                         n * sizeof(*priv->snd_card.aux_dev), GFP_KERNEL);
 433         if (!priv->snd_card.aux_dev)
 434                 return -ENOMEM;
 435
 436         for (i = 0; i < n; i++) {
 437                 aux_node = of_parse_phandle(node, PREFIX "aux-devs", i);
 438                 if (!aux_node)
 439                         return -EINVAL;
 440                 priv->snd_card.aux_dev[i].codec_of_node = aux_node;
 441         }
 442
 443         priv->snd_card.num_aux_devs = n;
 444         return 0;
 445 }
 446
 447 static int seeed_voice_card_parse_of(struct device_node *node,
 448                                      struct seeed_card_data *priv)
 449 {
 450         struct device *dev = seeed_priv_to_dev(priv);
 451         struct device_node *dai_link;
 452         int ret;
 453
 454         if (!node)
 455                 return -EINVAL;
 456
 457         dai_link = of_get_child_by_name(node, PREFIX "dai-link");
 458
 459         /* The off-codec widgets */
 460         if (of_property_read_bool(node, PREFIX "widgets")) {
 461                 ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
 462                                         PREFIX "widgets");
 463                 if (ret)
 464                         goto card_parse_end;
 465         }
 466
 467         /* DAPM routes */
 468         if (of_property_read_bool(node, PREFIX "routing")) {
 469                 ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
 470                                         PREFIX "routing");
 471                 if (ret)
 472                         goto card_parse_end;
 473         }
 474
 475         /* Factor to mclk, used in hw_params() */
 476         of_property_read_u32(node, PREFIX "mclk-fs", &priv->mclk_fs);
 477
 478         /* Single/Muti DAI link(s) & New style of DT node */
 479         if (dai_link) {
 480                 struct device_node *np = NULL;
 481                 int i = 0;
 482
 483                 for_each_child_of_node(node, np) {
 484                         dev_dbg(dev, "\tlink %d:\n", i);
 485                         ret = seeed_voice_card_dai_link_of(np, priv,
 486                                                            i, false);
 487                         if (ret < 0) {
 488                                 of_node_put(np);
 489                                 goto card_parse_end;
 490                         }
 491                         i++;
 492                 }
 493         } else {
 494                 /* For single DAI link & old style of DT node */
 495                 ret = seeed_voice_card_dai_link_of(node, priv, 0, true);
 496                 if (ret < 0)
 497                         goto card_parse_end;
 498         }
 499
 500         ret = asoc_simple_card_parse_card_name(&priv->snd_card, PREFIX);
 501         if (ret < 0)
 502                 goto card_parse_end;
 503
 504         ret = seeed_voice_card_parse_aux_devs(node, priv);
 505
 506         priv->channels_playback_default  = 0;
 507         priv->channels_playback_override = 2;
 508         priv->channels_capture_default   = 0;
 509         priv->channels_capture_override  = 2;
 510         of_property_read_u32(node, PREFIX "channels-playback-default",
 511                                     &priv->channels_playback_default);
 512         of_property_read_u32(node, PREFIX "channels-playback-override",
 513                                     &priv->channels_playback_override);
 514         of_property_read_u32(node, PREFIX "channels-capture-default",
 515                                     &priv->channels_capture_default);
 516         of_property_read_u32(node, PREFIX "channels-capture-override",
 517                                     &priv->channels_capture_override);
 518
 519 card_parse_end:
 520         of_node_put(dai_link);
 521
 522         return ret;
 523 }
 524
 525 static int seeed_voice_card_probe(struct platform_device *pdev)
 526 {
 527         struct seeed_card_data *priv;
 528         struct snd_soc_dai_link *dai_link;
 529         struct seeed_dai_props *dai_props;
 530         struct device_node *np = pdev->dev.of_node;
 531         struct device *dev = &pdev->dev;
 532         int num, ret;
 533
 534         /* Get the number of DAI links */
 535         if (np && of_get_child_by_name(np, PREFIX "dai-link"))
 536                 num = of_get_child_count(np);
 537         else
 538                 num = 1;
 539
 540         /* Allocate the private data and the DAI link array */
 541         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 542         if (!priv)
 543                 return -ENOMEM;
 544
 545         dai_props = devm_kzalloc(dev, sizeof(*dai_props) * num, GFP_KERNEL);
 546         dai_link  = devm_kzalloc(dev, sizeof(*dai_link)  * num, GFP_KERNEL);
 547         if (!dai_props || !dai_link)
 548                 return -ENOMEM;
 549
 550         priv->dai_props                 = dai_props;
 551         priv->dai_link                  = dai_link;
 552
 553         /* Init snd_soc_card */
 554         priv->snd_card.owner            = THIS_MODULE;
 555         priv->snd_card.dev              = dev;
 556         priv->snd_card.dai_link         = priv->dai_link;
 557         priv->snd_card.num_links        = num;
 558
 559         if (np && of_device_is_available(np)) {
 560                 ret = seeed_voice_card_parse_of(np, priv);
 561                 if (ret < 0) {
 562                         if (ret != -EPROBE_DEFER)
 563                                 dev_err(dev, "parse error %d\n", ret);
 564                         goto err;
 565                 }
 566         } else {
 567                 struct seeed_card_info *cinfo;
 568
 569                 cinfo = dev->platform_data;
 570                 if (!cinfo) {
 571                         dev_err(dev, "no info for seeed-voice-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 seeed_voice_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          = seeed_voice_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         snd_soc_card_set_drvdata(&priv->snd_card, priv);
 600
 601         #if CONFIG_AC10X_TRIG_LOCK
 602         spin_lock_init(&priv->lock);
 603         #endif
 604
 605         INIT_WORK(&priv->work_codec_clk, work_cb_codec_clk);
 606
 607         ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
 608         if (ret >= 0)
 609                 return ret;
 610
 611 err:
 612         asoc_simple_card_clean_reference(&priv->snd_card);
 613
 614         return ret;
 615 }
 616
 617 static int seeed_voice_card_remove(struct platform_device *pdev)
 618 {
 619         struct snd_soc_card *card = platform_get_drvdata(pdev);
 620         struct seeed_card_data *priv = snd_soc_card_get_drvdata(card);
 621
 622         if (cancel_work_sync(&priv->work_codec_clk) != 0) {
 623         }
 624         return asoc_simple_card_clean_reference(card);
 625 }
 626
 627 static const struct of_device_id seeed_voice_of_match[] = {
 628         { .compatible = "seeed-voicecard", },
 629         {},
 630 };
 631 MODULE_DEVICE_TABLE(of, seeed_voice_of_match);
 632
 633 static struct platform_driver seeed_voice_card = {
 634         .driver = {
 635                 .name = "seeed-voicecard",
 636                 .pm = &snd_soc_pm_ops,
 637                 .of_match_table = seeed_voice_of_match,
 638         },
 639         .probe = seeed_voice_card_probe,
 640         .remove = seeed_voice_card_remove,
 641 };
 642
 643 module_platform_driver(seeed_voice_card);
 644
 645 MODULE_ALIAS("platform:seeed-voice-card");
 646 MODULE_LICENSE("GPL v2");
 647 MODULE_DESCRIPTION("ASoC SEEED Voice Card");
 648 MODULE_AUTHOR("PeterYang<linsheng.yang@seeed.cc>");