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

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // simple-card-utils.c
   4 //
   5 // Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6
   7 #include <linux/clk.h>
   8 #include <linux/gpio.h>
   9 #include <linux/gpio/consumer.h>
  10 #include <linux/module.h>
  11 #include <linux/of.h>
  12 #include <linux/of_gpio.h>
  13 #include <linux/of_graph.h>
  14 #include <sound/jack.h>
  15 #include <sound/pcm_params.h>
  16 #include <sound/simple_card_utils.h>
  17
  18 void asoc_simple_convert_fixup(struct asoc_simple_data *data,
  19                                struct snd_pcm_hw_params *params)
  20 {
  21         struct snd_interval *rate = hw_param_interval(params,
  22                                                 SNDRV_PCM_HW_PARAM_RATE);
  23         struct snd_interval *channels = hw_param_interval(params,
  24                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
  25
  26         if (data->convert_rate)
  27                 rate->min =
  28                 rate->max = data->convert_rate;
  29
  30         if (data->convert_channels)
  31                 channels->min =
  32                 channels->max = data->convert_channels;
  33 }
  34 EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup);
  35
  36 void asoc_simple_parse_convert(struct device_node *np,
  37                                char *prefix,
  38                                struct asoc_simple_data *data)
  39 {
  40         char prop[128];
  41
  42         if (!prefix)
  43                 prefix = "";
  44
  45         /* sampling rate convert */
  46         snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
  47         of_property_read_u32(np, prop, &data->convert_rate);
  48
  49         /* channels transfer */
  50         snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
  51         of_property_read_u32(np, prop, &data->convert_channels);
  52 }
  53 EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);
  54
  55 int asoc_simple_parse_daifmt(struct device *dev,
  56                              struct device_node *node,
  57                              struct device_node *codec,
  58                              char *prefix,
  59                              unsigned int *retfmt)
  60 {
  61         struct device_node *bitclkmaster = NULL;
  62         struct device_node *framemaster = NULL;
  63         unsigned int daifmt;
  64
  65         daifmt = snd_soc_daifmt_parse_format(node, prefix);
  66
  67         snd_soc_daifmt_parse_clock_provider_as_phandle(node, prefix, &bitclkmaster, &framemaster);
  68         if (!bitclkmaster && !framemaster) {
  69                 /*
  70                  * No dai-link level and master setting was not found from
  71                  * sound node level, revert back to legacy DT parsing and
  72                  * take the settings from codec node.
  73                  */
  74                 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
  75
  76                 daifmt |= snd_soc_daifmt_parse_clock_provider_as_flag(codec, NULL);
  77         } else {
  78                 daifmt |= snd_soc_daifmt_clock_provider_from_bitmap(
  79                                 ((codec == bitclkmaster) << 4) | (codec == framemaster));
  80         }
  81
  82         of_node_put(bitclkmaster);
  83         of_node_put(framemaster);
  84
  85         *retfmt = daifmt;
  86
  87         return 0;
  88 }
  89 EXPORT_SYMBOL_GPL(asoc_simple_parse_daifmt);
  90
  91 int asoc_simple_parse_tdm_width_map(struct device *dev, struct device_node *np,
  92                                     struct asoc_simple_dai *dai)
  93 {
  94         u32 *array_values, *p;
  95         int n, i, ret;
  96
  97         if (!of_property_read_bool(np, "dai-tdm-slot-width-map"))
  98                 return 0;
  99
 100         n = of_property_count_elems_of_size(np, "dai-tdm-slot-width-map", sizeof(u32));
 101         if (n % 3) {
 102                 dev_err(dev, "Invalid number of cells for dai-tdm-slot-width-map\n");
 103                 return -EINVAL;
 104         }
 105
 106         dai->tdm_width_map = devm_kcalloc(dev, n, sizeof(*dai->tdm_width_map), GFP_KERNEL);
 107         if (!dai->tdm_width_map)
 108                 return -ENOMEM;
 109
 110         array_values = kcalloc(n, sizeof(*array_values), GFP_KERNEL);
 111         if (!array_values)
 112                 return -ENOMEM;
 113
 114         ret = of_property_read_u32_array(np, "dai-tdm-slot-width-map", array_values, n);
 115         if (ret < 0) {
 116                 dev_err(dev, "Could not read dai-tdm-slot-width-map: %d\n", ret);
 117                 goto out;
 118         }
 119
 120         p = array_values;
 121         for (i = 0; i < n / 3; ++i) {
 122                 dai->tdm_width_map[i].sample_bits = *p++;
 123                 dai->tdm_width_map[i].slot_width = *p++;
 124                 dai->tdm_width_map[i].slot_count = *p++;
 125         }
 126
 127         dai->n_tdm_widths = i;
 128         ret = 0;
 129 out:
 130         kfree(array_values);
 131
 132         return ret;
 133 }
 134 EXPORT_SYMBOL_GPL(asoc_simple_parse_tdm_width_map);
 135
 136 int asoc_simple_set_dailink_name(struct device *dev,
 137                                  struct snd_soc_dai_link *dai_link,
 138                                  const char *fmt, ...)
 139 {
 140         va_list ap;
 141         char *name = NULL;
 142         int ret = -ENOMEM;
 143
 144         va_start(ap, fmt);
 145         name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
 146         va_end(ap);
 147
 148         if (name) {
 149                 ret = 0;
 150
 151                 dai_link->name          = name;
 152                 dai_link->stream_name   = name;
 153         }
 154
 155         return ret;
 156 }
 157 EXPORT_SYMBOL_GPL(asoc_simple_set_dailink_name);
 158
 159 int asoc_simple_parse_card_name(struct snd_soc_card *card,
 160                                 char *prefix)
 161 {
 162         int ret;
 163
 164         if (!prefix)
 165                 prefix = "";
 166
 167         /* Parse the card name from DT */
 168         ret = snd_soc_of_parse_card_name(card, "label");
 169         if (ret < 0 || !card->name) {
 170                 char prop[128];
 171
 172                 snprintf(prop, sizeof(prop), "%sname", prefix);
 173                 ret = snd_soc_of_parse_card_name(card, prop);
 174                 if (ret < 0)
 175                         return ret;
 176         }
 177
 178         if (!card->name && card->dai_link)
 179                 card->name = card->dai_link->name;
 180
 181         return 0;
 182 }
 183 EXPORT_SYMBOL_GPL(asoc_simple_parse_card_name);
 184
 185 static int asoc_simple_clk_enable(struct asoc_simple_dai *dai)
 186 {
 187         if (dai)
 188                 return clk_prepare_enable(dai->clk);
 189
 190         return 0;
 191 }
 192
 193 static void asoc_simple_clk_disable(struct asoc_simple_dai *dai)
 194 {
 195         if (dai)
 196                 clk_disable_unprepare(dai->clk);
 197 }
 198
 199 int asoc_simple_parse_clk(struct device *dev,
 200                           struct device_node *node,
 201                           struct asoc_simple_dai *simple_dai,
 202                           struct snd_soc_dai_link_component *dlc)
 203 {
 204         struct clk *clk;
 205         u32 val;
 206
 207         /*
 208          * Parse dai->sysclk come from "clocks = <&xxx>"
 209          * (if system has common clock)
 210          *  or "system-clock-frequency = <xxx>"
 211          *  or device's module clock.
 212          */
 213         clk = devm_get_clk_from_child(dev, node, NULL);
 214         simple_dai->clk_fixed = of_property_read_bool(
 215                 node, "system-clock-fixed");
 216         if (!IS_ERR(clk)) {
 217                 simple_dai->sysclk = clk_get_rate(clk);
 218
 219                 simple_dai->clk = clk;
 220         } else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
 221                 simple_dai->sysclk = val;
 222                 simple_dai->clk_fixed = true;
 223         } else {
 224                 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
 225                 if (!IS_ERR(clk))
 226                         simple_dai->sysclk = clk_get_rate(clk);
 227         }
 228
 229         if (of_property_read_bool(node, "system-clock-direction-out"))
 230                 simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
 231
 232         return 0;
 233 }
 234 EXPORT_SYMBOL_GPL(asoc_simple_parse_clk);
 235
 236 static int asoc_simple_check_fixed_sysclk(struct device *dev,
 237                                           struct asoc_simple_dai *dai,
 238                                           unsigned int *fixed_sysclk)
 239 {
 240         if (dai->clk_fixed) {
 241                 if (*fixed_sysclk && *fixed_sysclk != dai->sysclk) {
 242                         dev_err(dev, "inconsistent fixed sysclk rates (%u vs %u)\n",
 243                                 *fixed_sysclk, dai->sysclk);
 244                         return -EINVAL;
 245                 }
 246                 *fixed_sysclk = dai->sysclk;
 247         }
 248
 249         return 0;
 250 }
 251
 252 int asoc_simple_startup(struct snd_pcm_substream *substream)
 253 {
 254         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 255         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 256         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 257         struct asoc_simple_dai *dai;
 258         unsigned int fixed_sysclk = 0;
 259         int i1, i2, i;
 260         int ret;
 261
 262         for_each_prop_dai_cpu(props, i1, dai) {
 263                 ret = asoc_simple_clk_enable(dai);
 264                 if (ret)
 265                         goto cpu_err;
 266                 ret = asoc_simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
 267                 if (ret)
 268                         goto cpu_err;
 269         }
 270
 271         for_each_prop_dai_codec(props, i2, dai) {
 272                 ret = asoc_simple_clk_enable(dai);
 273                 if (ret)
 274                         goto codec_err;
 275                 ret = asoc_simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
 276                 if (ret)
 277                         goto codec_err;
 278         }
 279
 280         if (fixed_sysclk && props->mclk_fs) {
 281                 unsigned int fixed_rate = fixed_sysclk / props->mclk_fs;
 282
 283                 if (fixed_sysclk % props->mclk_fs) {
 284                         dev_err(rtd->dev, "fixed sysclk %u not divisible by mclk_fs %u\n",
 285                                 fixed_sysclk, props->mclk_fs);
 286                         return -EINVAL;
 287                 }
 288                 ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE,
 289                         fixed_rate, fixed_rate);
 290                 if (ret)
 291                         goto codec_err;
 292         }
 293
 294         return 0;
 295
 296 codec_err:
 297         for_each_prop_dai_codec(props, i, dai) {
 298                 if (i >= i2)
 299                         break;
 300                 asoc_simple_clk_disable(dai);
 301         }
 302 cpu_err:
 303         for_each_prop_dai_cpu(props, i, dai) {
 304                 if (i >= i1)
 305                         break;
 306                 asoc_simple_clk_disable(dai);
 307         }
 308         return ret;
 309 }
 310 EXPORT_SYMBOL_GPL(asoc_simple_startup);
 311
 312 void asoc_simple_shutdown(struct snd_pcm_substream *substream)
 313 {
 314         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 315         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 316         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 317         struct asoc_simple_dai *dai;
 318         int i;
 319
 320         for_each_prop_dai_cpu(props, i, dai) {
 321                 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, i);
 322
 323                 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai))
 324                         snd_soc_dai_set_sysclk(cpu_dai,
 325                                                0, 0, SND_SOC_CLOCK_IN);
 326
 327                 asoc_simple_clk_disable(dai);
 328         }
 329         for_each_prop_dai_codec(props, i, dai) {
 330                 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, i);
 331
 332                 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai))
 333                         snd_soc_dai_set_sysclk(codec_dai,
 334                                                0, 0, SND_SOC_CLOCK_IN);
 335
 336                 asoc_simple_clk_disable(dai);
 337         }
 338 }
 339 EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
 340
 341 static int asoc_simple_set_clk_rate(struct device *dev,
 342                                     struct asoc_simple_dai *simple_dai,
 343                                     unsigned long rate)
 344 {
 345         if (!simple_dai)
 346                 return 0;
 347
 348         if (simple_dai->clk_fixed && rate != simple_dai->sysclk) {
 349                 dev_err(dev, "dai %s invalid clock rate %lu\n", simple_dai->name, rate);
 350                 return -EINVAL;
 351         }
 352
 353         if (!simple_dai->clk)
 354                 return 0;
 355
 356         if (clk_get_rate(simple_dai->clk) == rate)
 357                 return 0;
 358
 359         return clk_set_rate(simple_dai->clk, rate);
 360 }
 361
 362 static int asoc_simple_set_tdm(struct snd_soc_dai *dai,
 363                                 struct asoc_simple_dai *simple_dai,
 364                                 struct snd_pcm_hw_params *params)
 365 {
 366         int sample_bits = params_width(params);
 367         int slot_width = simple_dai->slot_width;
 368         int slot_count = simple_dai->slots;
 369         int i, ret;
 370
 371         if (!simple_dai || !simple_dai->tdm_width_map)
 372                 return 0;
 373
 374         if (slot_width == 0)
 375                 slot_width = sample_bits;
 376
 377         for (i = 0; i < simple_dai->n_tdm_widths; ++i) {
 378                 if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) {
 379                         slot_width = simple_dai->tdm_width_map[i].slot_width;
 380                         slot_count = simple_dai->tdm_width_map[i].slot_count;
 381                         break;
 382                 }
 383         }
 384
 385         ret = snd_soc_dai_set_tdm_slot(dai,
 386                                        simple_dai->tx_slot_mask,
 387                                        simple_dai->rx_slot_mask,
 388                                        slot_count,
 389                                        slot_width);
 390         if (ret && ret != -ENOTSUPP) {
 391                 dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret);
 392                 return ret;
 393         }
 394
 395         return 0;
 396 }
 397
 398 int asoc_simple_hw_params(struct snd_pcm_substream *substream,
 399                           struct snd_pcm_hw_params *params)
 400 {
 401         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 402         struct asoc_simple_dai *pdai;
 403         struct snd_soc_dai *sdai;
 404         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 405         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 406         unsigned int mclk, mclk_fs = 0;
 407         int i, ret;
 408
 409         if (props->mclk_fs)
 410                 mclk_fs = props->mclk_fs;
 411
 412         if (mclk_fs) {
 413                 struct snd_soc_component *component;
 414                 mclk = params_rate(params) * mclk_fs;
 415
 416                 for_each_prop_dai_codec(props, i, pdai) {
 417                         ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
 418                         if (ret < 0)
 419                                 return ret;
 420                 }
 421
 422                 for_each_prop_dai_cpu(props, i, pdai) {
 423                         ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
 424                         if (ret < 0)
 425                                 return ret;
 426                 }
 427
 428                 /* Ensure sysclk is set on all components in case any
 429                  * (such as platform components) are missed by calls to
 430                  * snd_soc_dai_set_sysclk.
 431                  */
 432                 for_each_rtd_components(rtd, i, component) {
 433                         ret = snd_soc_component_set_sysclk(component, 0, 0,
 434                                                            mclk, SND_SOC_CLOCK_IN);
 435                         if (ret && ret != -ENOTSUPP)
 436                                 return ret;
 437                 }
 438
 439                 for_each_rtd_codec_dais(rtd, i, sdai) {
 440                         ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
 441                         if (ret && ret != -ENOTSUPP)
 442                                 return ret;
 443                 }
 444
 445                 for_each_rtd_cpu_dais(rtd, i, sdai) {
 446                         ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
 447                         if (ret && ret != -ENOTSUPP)
 448                                 return ret;
 449                 }
 450         }
 451
 452         for_each_prop_dai_codec(props, i, pdai) {
 453                 sdai = asoc_rtd_to_codec(rtd, i);
 454                 ret = asoc_simple_set_tdm(sdai, pdai, params);
 455                 if (ret < 0)
 456                         return ret;
 457         }
 458
 459         for_each_prop_dai_cpu(props, i, pdai) {
 460                 sdai = asoc_rtd_to_cpu(rtd, i);
 461                 ret = asoc_simple_set_tdm(sdai, pdai, params);
 462                 if (ret < 0)
 463                         return ret;
 464         }
 465
 466         return 0;
 467 }
 468 EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
 469
 470 int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 471                                    struct snd_pcm_hw_params *params)
 472 {
 473         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 474         struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
 475
 476         asoc_simple_convert_fixup(&dai_props->adata, params);
 477
 478         return 0;
 479 }
 480 EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
 481
 482 static int asoc_simple_init_dai(struct snd_soc_dai *dai,
 483                                      struct asoc_simple_dai *simple_dai)
 484 {
 485         int ret;
 486
 487         if (!simple_dai)
 488                 return 0;
 489
 490         if (simple_dai->sysclk) {
 491                 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
 492                                              simple_dai->clk_direction);
 493                 if (ret && ret != -ENOTSUPP) {
 494                         dev_err(dai->dev, "simple-card: set_sysclk error\n");
 495                         return ret;
 496                 }
 497         }
 498
 499         if (simple_dai->slots) {
 500                 ret = snd_soc_dai_set_tdm_slot(dai,
 501                                                simple_dai->tx_slot_mask,
 502                                                simple_dai->rx_slot_mask,
 503                                                simple_dai->slots,
 504                                                simple_dai->slot_width);
 505                 if (ret && ret != -ENOTSUPP) {
 506                         dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
 507                         return ret;
 508                 }
 509         }
 510
 511         return 0;
 512 }
 513
 514 static int asoc_simple_init_dai_link_params(struct snd_soc_pcm_runtime *rtd,
 515                                             struct simple_dai_props *dai_props)
 516 {
 517         struct snd_soc_dai_link *dai_link = rtd->dai_link;
 518         struct snd_soc_component *component;
 519         struct snd_soc_pcm_stream *params;
 520         struct snd_pcm_hardware hw;
 521         int i, ret, stream;
 522
 523         /* Only Codecs */
 524         for_each_rtd_components(rtd, i, component) {
 525                 if (!snd_soc_component_is_codec(component))
 526                         return 0;
 527         }
 528
 529         /* Assumes the capabilities are the same for all supported streams */
 530         for_each_pcm_streams(stream) {
 531                 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
 532                 if (ret == 0)
 533                         break;
 534         }
 535
 536         if (ret < 0) {
 537                 dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
 538                 return ret;
 539         }
 540
 541         params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
 542         if (!params)
 543                 return -ENOMEM;
 544
 545         params->formats = hw.formats;
 546         params->rates = hw.rates;
 547         params->rate_min = hw.rate_min;
 548         params->rate_max = hw.rate_max;
 549         params->channels_min = hw.channels_min;
 550         params->channels_max = hw.channels_max;
 551
 552         dai_link->params = params;
 553         dai_link->num_params = 1;
 554
 555         return 0;
 556 }
 557
 558 int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
 559 {
 560         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 561         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 562         struct asoc_simple_dai *dai;
 563         int i, ret;
 564
 565         for_each_prop_dai_codec(props, i, dai) {
 566                 ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, i), dai);
 567                 if (ret < 0)
 568                         return ret;
 569         }
 570         for_each_prop_dai_cpu(props, i, dai) {
 571                 ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, i), dai);
 572                 if (ret < 0)
 573                         return ret;
 574         }
 575
 576         ret = asoc_simple_init_dai_link_params(rtd, props);
 577         if (ret < 0)
 578                 return ret;
 579
 580         return 0;
 581 }
 582 EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
 583
 584 void asoc_simple_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
 585                                        struct snd_soc_dai_link_component *cpus)
 586 {
 587         /* Assumes platform == cpu */
 588         if (!platforms->of_node)
 589                 platforms->of_node = cpus->of_node;
 590 }
 591 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
 592
 593 void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
 594                                   int is_single_links)
 595 {
 596         /*
 597          * In soc_bind_dai_link() will check cpu name after
 598          * of_node matching if dai_link has cpu_dai_name.
 599          * but, it will never match if name was created by
 600          * fmt_single_name() remove cpu_dai_name if cpu_args
 601          * was 0. See:
 602          *      fmt_single_name()
 603          *      fmt_multiple_name()
 604          */
 605         if (is_single_links)
 606                 cpus->dai_name = NULL;
 607 }
 608 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
 609
 610 int asoc_simple_clean_reference(struct snd_soc_card *card)
 611 {
 612         struct snd_soc_dai_link *dai_link;
 613         struct snd_soc_dai_link_component *cpu;
 614         struct snd_soc_dai_link_component *codec;
 615         int i, j;
 616
 617         for_each_card_prelinks(card, i, dai_link) {
 618                 for_each_link_cpus(dai_link, j, cpu)
 619                         of_node_put(cpu->of_node);
 620                 for_each_link_codecs(dai_link, j, codec)
 621                         of_node_put(codec->of_node);
 622         }
 623         return 0;
 624 }
 625 EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
 626
 627 int asoc_simple_parse_routing(struct snd_soc_card *card,
 628                               char *prefix)
 629 {
 630         struct device_node *node = card->dev->of_node;
 631         char prop[128];
 632
 633         if (!prefix)
 634                 prefix = "";
 635
 636         snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
 637
 638         if (!of_property_read_bool(node, prop))
 639                 return 0;
 640
 641         return snd_soc_of_parse_audio_routing(card, prop);
 642 }
 643 EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
 644
 645 int asoc_simple_parse_widgets(struct snd_soc_card *card,
 646                               char *prefix)
 647 {
 648         struct device_node *node = card->dev->of_node;
 649         char prop[128];
 650
 651         if (!prefix)
 652                 prefix = "";
 653
 654         snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
 655
 656         if (of_property_read_bool(node, prop))
 657                 return snd_soc_of_parse_audio_simple_widgets(card, prop);
 658
 659         /* no widgets is not error */
 660         return 0;
 661 }
 662 EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
 663
 664 int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
 665                                    char *prefix)
 666 {
 667         char prop[128];
 668
 669         if (!prefix)
 670                 prefix = "";
 671
 672         snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
 673
 674         return snd_soc_of_parse_pin_switches(card, prop);
 675 }
 676 EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
 677
 678 int asoc_simple_init_jack(struct snd_soc_card *card,
 679                           struct asoc_simple_jack *sjack,
 680                           int is_hp, char *prefix,
 681                           char *pin)
 682 {
 683         struct device *dev = card->dev;
 684         enum of_gpio_flags flags;
 685         char prop[128];
 686         char *pin_name;
 687         char *gpio_name;
 688         int mask;
 689         int det;
 690
 691         if (!prefix)
 692                 prefix = "";
 693
 694         sjack->gpio.gpio = -ENOENT;
 695
 696         if (is_hp) {
 697                 snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
 698                 pin_name        = pin ? pin : "Headphones";
 699                 gpio_name       = "Headphone detection";
 700                 mask            = SND_JACK_HEADPHONE;
 701         } else {
 702                 snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
 703                 pin_name        = pin ? pin : "Mic Jack";
 704                 gpio_name       = "Mic detection";
 705                 mask            = SND_JACK_MICROPHONE;
 706         }
 707
 708         det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
 709         if (det == -EPROBE_DEFER)
 710                 return -EPROBE_DEFER;
 711
 712         if (gpio_is_valid(det)) {
 713                 sjack->pin.pin          = pin_name;
 714                 sjack->pin.mask         = mask;
 715
 716                 sjack->gpio.name        = gpio_name;
 717                 sjack->gpio.report      = mask;
 718                 sjack->gpio.gpio        = det;
 719                 sjack->gpio.invert      = !!(flags & OF_GPIO_ACTIVE_LOW);
 720                 sjack->gpio.debounce_time = 150;
 721
 722                 snd_soc_card_jack_new(card, pin_name, mask,
 723                                       &sjack->jack,
 724                                       &sjack->pin, 1);
 725
 726                 snd_soc_jack_add_gpios(&sjack->jack, 1,
 727                                        &sjack->gpio);
 728         }
 729
 730         return 0;
 731 }
 732 EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
 733
 734 int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 735                           struct link_info *li)
 736 {
 737         struct snd_soc_card *card = simple_priv_to_card(priv);
 738         struct device *dev = simple_priv_to_dev(priv);
 739         struct snd_soc_dai_link *dai_link;
 740         struct simple_dai_props *dai_props;
 741         struct asoc_simple_dai *dais;
 742         struct snd_soc_dai_link_component *dlcs;
 743         struct snd_soc_codec_conf *cconf = NULL;
 744         struct snd_soc_pcm_stream *c2c_conf = NULL;
 745         int i, dai_num = 0, dlc_num = 0, cnf_num = 0, c2c_num = 0;
 746
 747         dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
 748         dai_link  = devm_kcalloc(dev, li->link, sizeof(*dai_link),  GFP_KERNEL);
 749         if (!dai_props || !dai_link)
 750                 return -ENOMEM;
 751
 752         /*
 753          * dais (= CPU+Codec)
 754          * dlcs (= CPU+Codec+Platform)
 755          */
 756         for (i = 0; i < li->link; i++) {
 757                 int cc = li->num[i].cpus + li->num[i].codecs;
 758
 759                 dai_num += cc;
 760                 dlc_num += cc + li->num[i].platforms;
 761
 762                 if (!li->num[i].cpus)
 763                         cnf_num += li->num[i].codecs;
 764
 765                 c2c_num += li->num[i].c2c;
 766         }
 767
 768         dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
 769         dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL);
 770         if (!dais || !dlcs)
 771                 return -ENOMEM;
 772
 773         if (cnf_num) {
 774                 cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
 775                 if (!cconf)
 776                         return -ENOMEM;
 777         }
 778
 779         if (c2c_num) {
 780                 c2c_conf = devm_kcalloc(dev, c2c_num, sizeof(*c2c_conf), GFP_KERNEL);
 781                 if (!c2c_conf)
 782                         return -ENOMEM;
 783         }
 784
 785         dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
 786                 li->link, dai_num, cnf_num);
 787
 788         /* dummy CPU/Codec */
 789         priv->dummy.of_node     = NULL;
 790         priv->dummy.dai_name    = "snd-soc-dummy-dai";
 791         priv->dummy.name        = "snd-soc-dummy";
 792
 793         priv->dai_props         = dai_props;
 794         priv->dai_link          = dai_link;
 795         priv->dais              = dais;
 796         priv->dlcs              = dlcs;
 797         priv->codec_conf        = cconf;
 798         priv->c2c_conf          = c2c_conf;
 799
 800         card->dai_link          = priv->dai_link;
 801         card->num_links         = li->link;
 802         card->codec_conf        = cconf;
 803         card->num_configs       = cnf_num;
 804
 805         for (i = 0; i < li->link; i++) {
 806                 if (li->num[i].cpus) {
 807                         /* Normal CPU */
 808                         dai_props[i].cpus       =
 809                         dai_link[i].cpus        = dlcs;
 810                         dai_props[i].num.cpus   =
 811                         dai_link[i].num_cpus    = li->num[i].cpus;
 812                         dai_props[i].cpu_dai    = dais;
 813
 814                         dlcs += li->num[i].cpus;
 815                         dais += li->num[i].cpus;
 816
 817                         if (li->num[i].c2c) {
 818                                 /* Codec2Codec */
 819                                 dai_props[i].c2c_conf = c2c_conf;
 820                                 c2c_conf += li->num[i].c2c;
 821                         }
 822                 } else {
 823                         /* DPCM Be's CPU = dummy */
 824                         dai_props[i].cpus       =
 825                         dai_link[i].cpus        = &priv->dummy;
 826                         dai_props[i].num.cpus   =
 827                         dai_link[i].num_cpus    = 1;
 828                 }
 829
 830                 if (li->num[i].codecs) {
 831                         /* Normal Codec */
 832                         dai_props[i].codecs     =
 833                         dai_link[i].codecs      = dlcs;
 834                         dai_props[i].num.codecs =
 835                         dai_link[i].num_codecs  = li->num[i].codecs;
 836                         dai_props[i].codec_dai  = dais;
 837
 838                         dlcs += li->num[i].codecs;
 839                         dais += li->num[i].codecs;
 840
 841                         if (!li->num[i].cpus) {
 842                                 /* DPCM Be's Codec */
 843                                 dai_props[i].codec_conf = cconf;
 844                                 cconf += li->num[i].codecs;
 845                         }
 846                 } else {
 847                         /* DPCM Fe's Codec = dummy */
 848                         dai_props[i].codecs     =
 849                         dai_link[i].codecs      = &priv->dummy;
 850                         dai_props[i].num.codecs =
 851                         dai_link[i].num_codecs  = 1;
 852                 }
 853
 854                 if (li->num[i].platforms) {
 855                         /* Have Platform */
 856                         dai_props[i].platforms          =
 857                         dai_link[i].platforms           = dlcs;
 858                         dai_props[i].num.platforms      =
 859                         dai_link[i].num_platforms       = li->num[i].platforms;
 860
 861                         dlcs += li->num[i].platforms;
 862                 } else {
 863                         /* Doesn't have Platform */
 864                         dai_props[i].platforms          =
 865                         dai_link[i].platforms           = NULL;
 866                         dai_props[i].num.platforms      =
 867                         dai_link[i].num_platforms       = 0;
 868                 }
 869         }
 870
 871         return 0;
 872 }
 873 EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
 874
 875 int asoc_simple_remove(struct platform_device *pdev)
 876 {
 877         struct snd_soc_card *card = platform_get_drvdata(pdev);
 878
 879         return asoc_simple_clean_reference(card);
 880 }
 881 EXPORT_SYMBOL_GPL(asoc_simple_remove);
 882
 883 int asoc_graph_card_probe(struct snd_soc_card *card)
 884 {
 885         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
 886         int ret;
 887
 888         ret = asoc_simple_init_hp(card, &priv->hp_jack, NULL);
 889         if (ret < 0)
 890                 return ret;
 891
 892         ret = asoc_simple_init_mic(card, &priv->mic_jack, NULL);
 893         if (ret < 0)
 894                 return ret;
 895
 896         return 0;
 897 }
 898 EXPORT_SYMBOL_GPL(asoc_graph_card_probe);
 899
 900 int asoc_graph_is_ports0(struct device_node *np)
 901 {
 902         struct device_node *port, *ports, *ports0, *top;
 903         int ret;
 904
 905         /* np is "endpoint" or "port" */
 906         if (of_node_name_eq(np, "endpoint")) {
 907                 port = of_get_parent(np);
 908         } else {
 909                 port = np;
 910                 of_node_get(port);
 911         }
 912
 913         ports   = of_get_parent(port);
 914         top     = of_get_parent(ports);
 915         ports0  = of_get_child_by_name(top, "ports");
 916
 917         ret = ports0 == ports;
 918
 919         of_node_put(port);
 920         of_node_put(ports);
 921         of_node_put(ports0);
 922         of_node_put(top);
 923
 924         return ret;
 925 }
 926 EXPORT_SYMBOL_GPL(asoc_graph_is_ports0);
 927
 928 /* Module information */
 929 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 930 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
 931 MODULE_LICENSE("GPL v2");