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_OUT);
 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, slot_count;
 368         int i, ret;
 369
 370         if (!simple_dai || !simple_dai->tdm_width_map)
 371                 return 0;
 372
 373         slot_width = simple_dai->slot_width;
 374         slot_count = simple_dai->slots;
 375
 376         if (slot_width == 0)
 377                 slot_width = sample_bits;
 378
 379         for (i = 0; i < simple_dai->n_tdm_widths; ++i) {
 380                 if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) {
 381                         slot_width = simple_dai->tdm_width_map[i].slot_width;
 382                         slot_count = simple_dai->tdm_width_map[i].slot_count;
 383                         break;
 384                 }
 385         }
 386
 387         ret = snd_soc_dai_set_tdm_slot(dai,
 388                                        simple_dai->tx_slot_mask,
 389                                        simple_dai->rx_slot_mask,
 390                                        slot_count,
 391                                        slot_width);
 392         if (ret && ret != -ENOTSUPP) {
 393                 dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret);
 394                 return ret;
 395         }
 396
 397         return 0;
 398 }
 399
 400 int asoc_simple_hw_params(struct snd_pcm_substream *substream,
 401                           struct snd_pcm_hw_params *params)
 402 {
 403         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 404         struct asoc_simple_dai *pdai;
 405         struct snd_soc_dai *sdai;
 406         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 407         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 408         unsigned int mclk, mclk_fs = 0;
 409         int i, ret;
 410
 411         if (props->mclk_fs)
 412                 mclk_fs = props->mclk_fs;
 413
 414         if (mclk_fs) {
 415                 struct snd_soc_component *component;
 416                 mclk = params_rate(params) * mclk_fs;
 417
 418                 for_each_prop_dai_codec(props, i, pdai) {
 419                         ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
 420                         if (ret < 0)
 421                                 return ret;
 422                 }
 423
 424                 for_each_prop_dai_cpu(props, i, pdai) {
 425                         ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
 426                         if (ret < 0)
 427                                 return ret;
 428                 }
 429
 430                 /* Ensure sysclk is set on all components in case any
 431                  * (such as platform components) are missed by calls to
 432                  * snd_soc_dai_set_sysclk.
 433                  */
 434                 for_each_rtd_components(rtd, i, component) {
 435                         ret = snd_soc_component_set_sysclk(component, 0, 0,
 436                                                            mclk, SND_SOC_CLOCK_IN);
 437                         if (ret && ret != -ENOTSUPP)
 438                                 return ret;
 439                 }
 440
 441                 for_each_rtd_codec_dais(rtd, i, sdai) {
 442                         ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
 443                         if (ret && ret != -ENOTSUPP)
 444                                 return ret;
 445                 }
 446
 447                 for_each_rtd_cpu_dais(rtd, i, sdai) {
 448                         ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
 449                         if (ret && ret != -ENOTSUPP)
 450                                 return ret;
 451                 }
 452         }
 453
 454         for_each_prop_dai_codec(props, i, pdai) {
 455                 sdai = asoc_rtd_to_codec(rtd, i);
 456                 ret = asoc_simple_set_tdm(sdai, pdai, params);
 457                 if (ret < 0)
 458                         return ret;
 459         }
 460
 461         for_each_prop_dai_cpu(props, i, pdai) {
 462                 sdai = asoc_rtd_to_cpu(rtd, i);
 463                 ret = asoc_simple_set_tdm(sdai, pdai, params);
 464                 if (ret < 0)
 465                         return ret;
 466         }
 467
 468         return 0;
 469 }
 470 EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
 471
 472 int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 473                                    struct snd_pcm_hw_params *params)
 474 {
 475         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 476         struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
 477
 478         asoc_simple_convert_fixup(&dai_props->adata, params);
 479
 480         return 0;
 481 }
 482 EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
 483
 484 static int asoc_simple_init_dai(struct snd_soc_dai *dai,
 485                                      struct asoc_simple_dai *simple_dai)
 486 {
 487         int ret;
 488
 489         if (!simple_dai)
 490                 return 0;
 491
 492         if (simple_dai->sysclk) {
 493                 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
 494                                              simple_dai->clk_direction);
 495                 if (ret && ret != -ENOTSUPP) {
 496                         dev_err(dai->dev, "simple-card: set_sysclk error\n");
 497                         return ret;
 498                 }
 499         }
 500
 501         if (simple_dai->slots) {
 502                 ret = snd_soc_dai_set_tdm_slot(dai,
 503                                                simple_dai->tx_slot_mask,
 504                                                simple_dai->rx_slot_mask,
 505                                                simple_dai->slots,
 506                                                simple_dai->slot_width);
 507                 if (ret && ret != -ENOTSUPP) {
 508                         dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
 509                         return ret;
 510                 }
 511         }
 512
 513         return 0;
 514 }
 515
 516 static inline int asoc_simple_component_is_codec(struct snd_soc_component *component)
 517 {
 518         return component->driver->endianness;
 519 }
 520
 521 static int asoc_simple_init_for_codec2codec(struct snd_soc_pcm_runtime *rtd,
 522                                             struct simple_dai_props *dai_props)
 523 {
 524         struct snd_soc_dai_link *dai_link = rtd->dai_link;
 525         struct snd_soc_component *component;
 526         struct snd_soc_pcm_stream *params;
 527         struct snd_pcm_hardware hw;
 528         int i, ret, stream;
 529
 530         /* Only Codecs */
 531         for_each_rtd_components(rtd, i, component) {
 532                 if (!asoc_simple_component_is_codec(component))
 533                         return 0;
 534         }
 535
 536         /* Assumes the capabilities are the same for all supported streams */
 537         for_each_pcm_streams(stream) {
 538                 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
 539                 if (ret == 0)
 540                         break;
 541         }
 542
 543         if (ret < 0) {
 544                 dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
 545                 return ret;
 546         }
 547
 548         params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
 549         if (!params)
 550                 return -ENOMEM;
 551
 552         params->formats = hw.formats;
 553         params->rates = hw.rates;
 554         params->rate_min = hw.rate_min;
 555         params->rate_max = hw.rate_max;
 556         params->channels_min = hw.channels_min;
 557         params->channels_max = hw.channels_max;
 558
 559         dai_link->params = params;
 560         dai_link->num_params = 1;
 561
 562         return 0;
 563 }
 564
 565 int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
 566 {
 567         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 568         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 569         struct asoc_simple_dai *dai;
 570         int i, ret;
 571
 572         for_each_prop_dai_codec(props, i, dai) {
 573                 ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, i), dai);
 574                 if (ret < 0)
 575                         return ret;
 576         }
 577         for_each_prop_dai_cpu(props, i, dai) {
 578                 ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, i), dai);
 579                 if (ret < 0)
 580                         return ret;
 581         }
 582
 583         ret = asoc_simple_init_for_codec2codec(rtd, props);
 584         if (ret < 0)
 585                 return ret;
 586
 587         return 0;
 588 }
 589 EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
 590
 591 void asoc_simple_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
 592                                        struct snd_soc_dai_link_component *cpus)
 593 {
 594         /* Assumes platform == cpu */
 595         if (!platforms->of_node)
 596                 platforms->of_node = cpus->of_node;
 597 }
 598 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
 599
 600 void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
 601                                   int is_single_links)
 602 {
 603         /*
 604          * In soc_bind_dai_link() will check cpu name after
 605          * of_node matching if dai_link has cpu_dai_name.
 606          * but, it will never match if name was created by
 607          * fmt_single_name() remove cpu_dai_name if cpu_args
 608          * was 0. See:
 609          *      fmt_single_name()
 610          *      fmt_multiple_name()
 611          */
 612         if (is_single_links)
 613                 cpus->dai_name = NULL;
 614 }
 615 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
 616
 617 void asoc_simple_clean_reference(struct snd_soc_card *card)
 618 {
 619         struct snd_soc_dai_link *dai_link;
 620         struct snd_soc_dai_link_component *cpu;
 621         struct snd_soc_dai_link_component *codec;
 622         int i, j;
 623
 624         for_each_card_prelinks(card, i, dai_link) {
 625                 for_each_link_cpus(dai_link, j, cpu)
 626                         of_node_put(cpu->of_node);
 627                 for_each_link_codecs(dai_link, j, codec)
 628                         of_node_put(codec->of_node);
 629         }
 630 }
 631 EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
 632
 633 int asoc_simple_parse_routing(struct snd_soc_card *card,
 634                               char *prefix)
 635 {
 636         struct device_node *node = card->dev->of_node;
 637         char prop[128];
 638
 639         if (!prefix)
 640                 prefix = "";
 641
 642         snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
 643
 644         if (!of_property_read_bool(node, prop))
 645                 return 0;
 646
 647         return snd_soc_of_parse_audio_routing(card, prop);
 648 }
 649 EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
 650
 651 int asoc_simple_parse_widgets(struct snd_soc_card *card,
 652                               char *prefix)
 653 {
 654         struct device_node *node = card->dev->of_node;
 655         char prop[128];
 656
 657         if (!prefix)
 658                 prefix = "";
 659
 660         snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
 661
 662         if (of_property_read_bool(node, prop))
 663                 return snd_soc_of_parse_audio_simple_widgets(card, prop);
 664
 665         /* no widgets is not error */
 666         return 0;
 667 }
 668 EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
 669
 670 int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
 671                                    char *prefix)
 672 {
 673         char prop[128];
 674
 675         if (!prefix)
 676                 prefix = "";
 677
 678         snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
 679
 680         return snd_soc_of_parse_pin_switches(card, prop);
 681 }
 682 EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
 683
 684 int asoc_simple_init_jack(struct snd_soc_card *card,
 685                           struct asoc_simple_jack *sjack,
 686                           int is_hp, char *prefix,
 687                           char *pin)
 688 {
 689         struct device *dev = card->dev;
 690         enum of_gpio_flags flags;
 691         char prop[128];
 692         char *pin_name;
 693         char *gpio_name;
 694         int mask;
 695         int det;
 696
 697         if (!prefix)
 698                 prefix = "";
 699
 700         sjack->gpio.gpio = -ENOENT;
 701
 702         if (is_hp) {
 703                 snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
 704                 pin_name        = pin ? pin : "Headphones";
 705                 gpio_name       = "Headphone detection";
 706                 mask            = SND_JACK_HEADPHONE;
 707         } else {
 708                 snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
 709                 pin_name        = pin ? pin : "Mic Jack";
 710                 gpio_name       = "Mic detection";
 711                 mask            = SND_JACK_MICROPHONE;
 712         }
 713
 714         det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
 715         if (det == -EPROBE_DEFER)
 716                 return -EPROBE_DEFER;
 717
 718         if (gpio_is_valid(det)) {
 719                 sjack->pin.pin          = pin_name;
 720                 sjack->pin.mask         = mask;
 721
 722                 sjack->gpio.name        = gpio_name;
 723                 sjack->gpio.report      = mask;
 724                 sjack->gpio.gpio        = det;
 725                 sjack->gpio.invert      = !!(flags & OF_GPIO_ACTIVE_LOW);
 726                 sjack->gpio.debounce_time = 150;
 727
 728                 snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack,
 729                                            &sjack->pin, 1);
 730
 731                 snd_soc_jack_add_gpios(&sjack->jack, 1,
 732                                        &sjack->gpio);
 733         }
 734
 735         return 0;
 736 }
 737 EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
 738
 739 int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 740                           struct link_info *li)
 741 {
 742         struct snd_soc_card *card = simple_priv_to_card(priv);
 743         struct device *dev = simple_priv_to_dev(priv);
 744         struct snd_soc_dai_link *dai_link;
 745         struct simple_dai_props *dai_props;
 746         struct asoc_simple_dai *dais;
 747         struct snd_soc_dai_link_component *dlcs;
 748         struct snd_soc_codec_conf *cconf = NULL;
 749         struct snd_soc_pcm_stream *c2c_conf = NULL;
 750         int i, dai_num = 0, dlc_num = 0, cnf_num = 0, c2c_num = 0;
 751
 752         dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
 753         dai_link  = devm_kcalloc(dev, li->link, sizeof(*dai_link),  GFP_KERNEL);
 754         if (!dai_props || !dai_link)
 755                 return -ENOMEM;
 756
 757         /*
 758          * dais (= CPU+Codec)
 759          * dlcs (= CPU+Codec+Platform)
 760          */
 761         for (i = 0; i < li->link; i++) {
 762                 int cc = li->num[i].cpus + li->num[i].codecs;
 763
 764                 dai_num += cc;
 765                 dlc_num += cc + li->num[i].platforms;
 766
 767                 if (!li->num[i].cpus)
 768                         cnf_num += li->num[i].codecs;
 769
 770                 c2c_num += li->num[i].c2c;
 771         }
 772
 773         dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
 774         dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL);
 775         if (!dais || !dlcs)
 776                 return -ENOMEM;
 777
 778         if (cnf_num) {
 779                 cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
 780                 if (!cconf)
 781                         return -ENOMEM;
 782         }
 783
 784         if (c2c_num) {
 785                 c2c_conf = devm_kcalloc(dev, c2c_num, sizeof(*c2c_conf), GFP_KERNEL);
 786                 if (!c2c_conf)
 787                         return -ENOMEM;
 788         }
 789
 790         dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
 791                 li->link, dai_num, cnf_num);
 792
 793         /* dummy CPU/Codec */
 794         priv->dummy.of_node     = NULL;
 795         priv->dummy.dai_name    = "snd-soc-dummy-dai";
 796         priv->dummy.name        = "snd-soc-dummy";
 797
 798         priv->dai_props         = dai_props;
 799         priv->dai_link          = dai_link;
 800         priv->dais              = dais;
 801         priv->dlcs              = dlcs;
 802         priv->codec_conf        = cconf;
 803         priv->c2c_conf          = c2c_conf;
 804
 805         card->dai_link          = priv->dai_link;
 806         card->num_links         = li->link;
 807         card->codec_conf        = cconf;
 808         card->num_configs       = cnf_num;
 809
 810         for (i = 0; i < li->link; i++) {
 811                 if (li->num[i].cpus) {
 812                         /* Normal CPU */
 813                         dai_props[i].cpus       =
 814                         dai_link[i].cpus        = dlcs;
 815                         dai_props[i].num.cpus   =
 816                         dai_link[i].num_cpus    = li->num[i].cpus;
 817                         dai_props[i].cpu_dai    = dais;
 818
 819                         dlcs += li->num[i].cpus;
 820                         dais += li->num[i].cpus;
 821
 822                         if (li->num[i].c2c) {
 823                                 /* Codec2Codec */
 824                                 dai_props[i].c2c_conf = c2c_conf;
 825                                 c2c_conf += li->num[i].c2c;
 826                         }
 827                 } else {
 828                         /* DPCM Be's CPU = dummy */
 829                         dai_props[i].cpus       =
 830                         dai_link[i].cpus        = &priv->dummy;
 831                         dai_props[i].num.cpus   =
 832                         dai_link[i].num_cpus    = 1;
 833                 }
 834
 835                 if (li->num[i].codecs) {
 836                         /* Normal Codec */
 837                         dai_props[i].codecs     =
 838                         dai_link[i].codecs      = dlcs;
 839                         dai_props[i].num.codecs =
 840                         dai_link[i].num_codecs  = li->num[i].codecs;
 841                         dai_props[i].codec_dai  = dais;
 842
 843                         dlcs += li->num[i].codecs;
 844                         dais += li->num[i].codecs;
 845
 846                         if (!li->num[i].cpus) {
 847                                 /* DPCM Be's Codec */
 848                                 dai_props[i].codec_conf = cconf;
 849                                 cconf += li->num[i].codecs;
 850                         }
 851                 } else {
 852                         /* DPCM Fe's Codec = dummy */
 853                         dai_props[i].codecs     =
 854                         dai_link[i].codecs      = &priv->dummy;
 855                         dai_props[i].num.codecs =
 856                         dai_link[i].num_codecs  = 1;
 857                 }
 858
 859                 if (li->num[i].platforms) {
 860                         /* Have Platform */
 861                         dai_props[i].platforms          =
 862                         dai_link[i].platforms           = dlcs;
 863                         dai_props[i].num.platforms      =
 864                         dai_link[i].num_platforms       = li->num[i].platforms;
 865
 866                         dlcs += li->num[i].platforms;
 867                 } else {
 868                         /* Doesn't have Platform */
 869                         dai_props[i].platforms          =
 870                         dai_link[i].platforms           = NULL;
 871                         dai_props[i].num.platforms      =
 872                         dai_link[i].num_platforms       = 0;
 873                 }
 874         }
 875
 876         return 0;
 877 }
 878 EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
 879
 880 int asoc_simple_remove(struct platform_device *pdev)
 881 {
 882         struct snd_soc_card *card = platform_get_drvdata(pdev);
 883
 884         asoc_simple_clean_reference(card);
 885
 886         return 0;
 887 }
 888 EXPORT_SYMBOL_GPL(asoc_simple_remove);
 889
 890 int asoc_graph_card_probe(struct snd_soc_card *card)
 891 {
 892         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
 893         int ret;
 894
 895         ret = asoc_simple_init_hp(card, &priv->hp_jack, NULL);
 896         if (ret < 0)
 897                 return ret;
 898
 899         ret = asoc_simple_init_mic(card, &priv->mic_jack, NULL);
 900         if (ret < 0)
 901                 return ret;
 902
 903         return 0;
 904 }
 905 EXPORT_SYMBOL_GPL(asoc_graph_card_probe);
 906
 907 int asoc_graph_is_ports0(struct device_node *np)
 908 {
 909         struct device_node *port, *ports, *ports0, *top;
 910         int ret;
 911
 912         /* np is "endpoint" or "port" */
 913         if (of_node_name_eq(np, "endpoint")) {
 914                 port = of_get_parent(np);
 915         } else {
 916                 port = np;
 917                 of_node_get(port);
 918         }
 919
 920         ports   = of_get_parent(port);
 921         top     = of_get_parent(ports);
 922         ports0  = of_get_child_by_name(top, "ports");
 923
 924         ret = ports0 == ports;
 925
 926         of_node_put(port);
 927         of_node_put(ports);
 928         of_node_put(ports0);
 929         of_node_put(top);
 930
 931         return ret;
 932 }
 933 EXPORT_SYMBOL_GPL(asoc_graph_is_ports0);
 934
 935 /* Module information */
 936 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 937 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
 938 MODULE_LICENSE("GPL v2");