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_graph.h>
  13 #include <sound/jack.h>
  14 #include <sound/pcm_params.h>
  15 #include <sound/simple_card_utils.h>
  16
  17 static void asoc_simple_fixup_sample_fmt(struct asoc_simple_data *data,
  18                                          struct snd_pcm_hw_params *params)
  19 {
  20         int i;
  21         struct snd_mask *mask = hw_param_mask(params,
  22                                               SNDRV_PCM_HW_PARAM_FORMAT);
  23         struct {
  24                 char *fmt;
  25                 u32 val;
  26         } of_sample_fmt_table[] = {
  27                 { "s8",         SNDRV_PCM_FORMAT_S8},
  28                 { "s16_le",     SNDRV_PCM_FORMAT_S16_LE},
  29                 { "s24_le",     SNDRV_PCM_FORMAT_S24_LE},
  30                 { "s24_3le",    SNDRV_PCM_FORMAT_S24_3LE},
  31                 { "s32_le",     SNDRV_PCM_FORMAT_S32_LE},
  32         };
  33
  34         for (i = 0; i < ARRAY_SIZE(of_sample_fmt_table); i++) {
  35                 if (!strcmp(data->convert_sample_format,
  36                             of_sample_fmt_table[i].fmt)) {
  37                         snd_mask_none(mask);
  38                         snd_mask_set(mask, of_sample_fmt_table[i].val);
  39                         break;
  40                 }
  41         }
  42 }
  43
  44 void asoc_simple_convert_fixup(struct asoc_simple_data *data,
  45                                struct snd_pcm_hw_params *params)
  46 {
  47         struct snd_interval *rate = hw_param_interval(params,
  48                                                 SNDRV_PCM_HW_PARAM_RATE);
  49         struct snd_interval *channels = hw_param_interval(params,
  50                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
  51
  52         if (data->convert_rate)
  53                 rate->min =
  54                 rate->max = data->convert_rate;
  55
  56         if (data->convert_channels)
  57                 channels->min =
  58                 channels->max = data->convert_channels;
  59
  60         if (data->convert_sample_format)
  61                 asoc_simple_fixup_sample_fmt(data, params);
  62 }
  63 EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup);
  64
  65 void asoc_simple_parse_convert(struct device_node *np,
  66                                char *prefix,
  67                                struct asoc_simple_data *data)
  68 {
  69         char prop[128];
  70
  71         if (!prefix)
  72                 prefix = "";
  73
  74         /* sampling rate convert */
  75         snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
  76         of_property_read_u32(np, prop, &data->convert_rate);
  77
  78         /* channels transfer */
  79         snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
  80         of_property_read_u32(np, prop, &data->convert_channels);
  81
  82         /* convert sample format */
  83         snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format");
  84         of_property_read_string(np, prop, &data->convert_sample_format);
  85 }
  86 EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);
  87
  88 int asoc_simple_parse_daifmt(struct device *dev,
  89                              struct device_node *node,
  90                              struct device_node *codec,
  91                              char *prefix,
  92                              unsigned int *retfmt)
  93 {
  94         struct device_node *bitclkmaster = NULL;
  95         struct device_node *framemaster = NULL;
  96         unsigned int daifmt;
  97
  98         daifmt = snd_soc_daifmt_parse_format(node, prefix);
  99
 100         snd_soc_daifmt_parse_clock_provider_as_phandle(node, prefix, &bitclkmaster, &framemaster);
 101         if (!bitclkmaster && !framemaster) {
 102                 /*
 103                  * No dai-link level and master setting was not found from
 104                  * sound node level, revert back to legacy DT parsing and
 105                  * take the settings from codec node.
 106                  */
 107                 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
 108
 109                 daifmt |= snd_soc_daifmt_parse_clock_provider_as_flag(codec, NULL);
 110         } else {
 111                 daifmt |= snd_soc_daifmt_clock_provider_from_bitmap(
 112                                 ((codec == bitclkmaster) << 4) | (codec == framemaster));
 113         }
 114
 115         of_node_put(bitclkmaster);
 116         of_node_put(framemaster);
 117
 118         *retfmt = daifmt;
 119
 120         return 0;
 121 }
 122 EXPORT_SYMBOL_GPL(asoc_simple_parse_daifmt);
 123
 124 int asoc_simple_parse_tdm_width_map(struct device *dev, struct device_node *np,
 125                                     struct asoc_simple_dai *dai)
 126 {
 127         u32 *array_values, *p;
 128         int n, i, ret;
 129
 130         if (!of_property_read_bool(np, "dai-tdm-slot-width-map"))
 131                 return 0;
 132
 133         n = of_property_count_elems_of_size(np, "dai-tdm-slot-width-map", sizeof(u32));
 134         if (n % 3) {
 135                 dev_err(dev, "Invalid number of cells for dai-tdm-slot-width-map\n");
 136                 return -EINVAL;
 137         }
 138
 139         dai->tdm_width_map = devm_kcalloc(dev, n, sizeof(*dai->tdm_width_map), GFP_KERNEL);
 140         if (!dai->tdm_width_map)
 141                 return -ENOMEM;
 142
 143         array_values = kcalloc(n, sizeof(*array_values), GFP_KERNEL);
 144         if (!array_values)
 145                 return -ENOMEM;
 146
 147         ret = of_property_read_u32_array(np, "dai-tdm-slot-width-map", array_values, n);
 148         if (ret < 0) {
 149                 dev_err(dev, "Could not read dai-tdm-slot-width-map: %d\n", ret);
 150                 goto out;
 151         }
 152
 153         p = array_values;
 154         for (i = 0; i < n / 3; ++i) {
 155                 dai->tdm_width_map[i].sample_bits = *p++;
 156                 dai->tdm_width_map[i].slot_width = *p++;
 157                 dai->tdm_width_map[i].slot_count = *p++;
 158         }
 159
 160         dai->n_tdm_widths = i;
 161         ret = 0;
 162 out:
 163         kfree(array_values);
 164
 165         return ret;
 166 }
 167 EXPORT_SYMBOL_GPL(asoc_simple_parse_tdm_width_map);
 168
 169 int asoc_simple_set_dailink_name(struct device *dev,
 170                                  struct snd_soc_dai_link *dai_link,
 171                                  const char *fmt, ...)
 172 {
 173         va_list ap;
 174         char *name = NULL;
 175         int ret = -ENOMEM;
 176
 177         va_start(ap, fmt);
 178         name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
 179         va_end(ap);
 180
 181         if (name) {
 182                 ret = 0;
 183
 184                 dai_link->name          = name;
 185                 dai_link->stream_name   = name;
 186         }
 187
 188         return ret;
 189 }
 190 EXPORT_SYMBOL_GPL(asoc_simple_set_dailink_name);
 191
 192 int asoc_simple_parse_card_name(struct snd_soc_card *card,
 193                                 char *prefix)
 194 {
 195         int ret;
 196
 197         if (!prefix)
 198                 prefix = "";
 199
 200         /* Parse the card name from DT */
 201         ret = snd_soc_of_parse_card_name(card, "label");
 202         if (ret < 0 || !card->name) {
 203                 char prop[128];
 204
 205                 snprintf(prop, sizeof(prop), "%sname", prefix);
 206                 ret = snd_soc_of_parse_card_name(card, prop);
 207                 if (ret < 0)
 208                         return ret;
 209         }
 210
 211         if (!card->name && card->dai_link)
 212                 card->name = card->dai_link->name;
 213
 214         return 0;
 215 }
 216 EXPORT_SYMBOL_GPL(asoc_simple_parse_card_name);
 217
 218 static int asoc_simple_clk_enable(struct asoc_simple_dai *dai)
 219 {
 220         if (dai)
 221                 return clk_prepare_enable(dai->clk);
 222
 223         return 0;
 224 }
 225
 226 static void asoc_simple_clk_disable(struct asoc_simple_dai *dai)
 227 {
 228         if (dai)
 229                 clk_disable_unprepare(dai->clk);
 230 }
 231
 232 int asoc_simple_parse_clk(struct device *dev,
 233                           struct device_node *node,
 234                           struct asoc_simple_dai *simple_dai,
 235                           struct snd_soc_dai_link_component *dlc)
 236 {
 237         struct clk *clk;
 238         u32 val;
 239
 240         /*
 241          * Parse dai->sysclk come from "clocks = <&xxx>"
 242          * (if system has common clock)
 243          *  or "system-clock-frequency = <xxx>"
 244          *  or device's module clock.
 245          */
 246         clk = devm_get_clk_from_child(dev, node, NULL);
 247         simple_dai->clk_fixed = of_property_read_bool(
 248                 node, "system-clock-fixed");
 249         if (!IS_ERR(clk)) {
 250                 simple_dai->sysclk = clk_get_rate(clk);
 251
 252                 simple_dai->clk = clk;
 253         } else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
 254                 simple_dai->sysclk = val;
 255                 simple_dai->clk_fixed = true;
 256         } else {
 257                 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
 258                 if (!IS_ERR(clk))
 259                         simple_dai->sysclk = clk_get_rate(clk);
 260         }
 261
 262         if (of_property_read_bool(node, "system-clock-direction-out"))
 263                 simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
 264
 265         return 0;
 266 }
 267 EXPORT_SYMBOL_GPL(asoc_simple_parse_clk);
 268
 269 static int asoc_simple_check_fixed_sysclk(struct device *dev,
 270                                           struct asoc_simple_dai *dai,
 271                                           unsigned int *fixed_sysclk)
 272 {
 273         if (dai->clk_fixed) {
 274                 if (*fixed_sysclk && *fixed_sysclk != dai->sysclk) {
 275                         dev_err(dev, "inconsistent fixed sysclk rates (%u vs %u)\n",
 276                                 *fixed_sysclk, dai->sysclk);
 277                         return -EINVAL;
 278                 }
 279                 *fixed_sysclk = dai->sysclk;
 280         }
 281
 282         return 0;
 283 }
 284
 285 int asoc_simple_startup(struct snd_pcm_substream *substream)
 286 {
 287         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 288         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 289         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 290         struct asoc_simple_dai *dai;
 291         unsigned int fixed_sysclk = 0;
 292         int i1, i2, i;
 293         int ret;
 294
 295         for_each_prop_dai_cpu(props, i1, dai) {
 296                 ret = asoc_simple_clk_enable(dai);
 297                 if (ret)
 298                         goto cpu_err;
 299                 ret = asoc_simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
 300                 if (ret)
 301                         goto cpu_err;
 302         }
 303
 304         for_each_prop_dai_codec(props, i2, dai) {
 305                 ret = asoc_simple_clk_enable(dai);
 306                 if (ret)
 307                         goto codec_err;
 308                 ret = asoc_simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
 309                 if (ret)
 310                         goto codec_err;
 311         }
 312
 313         if (fixed_sysclk && props->mclk_fs) {
 314                 unsigned int fixed_rate = fixed_sysclk / props->mclk_fs;
 315
 316                 if (fixed_sysclk % props->mclk_fs) {
 317                         dev_err(rtd->dev, "fixed sysclk %u not divisible by mclk_fs %u\n",
 318                                 fixed_sysclk, props->mclk_fs);
 319                         return -EINVAL;
 320                 }
 321                 ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE,
 322                         fixed_rate, fixed_rate);
 323                 if (ret)
 324                         goto codec_err;
 325         }
 326
 327         return 0;
 328
 329 codec_err:
 330         for_each_prop_dai_codec(props, i, dai) {
 331                 if (i >= i2)
 332                         break;
 333                 asoc_simple_clk_disable(dai);
 334         }
 335 cpu_err:
 336         for_each_prop_dai_cpu(props, i, dai) {
 337                 if (i >= i1)
 338                         break;
 339                 asoc_simple_clk_disable(dai);
 340         }
 341         return ret;
 342 }
 343 EXPORT_SYMBOL_GPL(asoc_simple_startup);
 344
 345 void asoc_simple_shutdown(struct snd_pcm_substream *substream)
 346 {
 347         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 348         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 349         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 350         struct asoc_simple_dai *dai;
 351         int i;
 352
 353         for_each_prop_dai_cpu(props, i, dai) {
 354                 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, i);
 355
 356                 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai))
 357                         snd_soc_dai_set_sysclk(cpu_dai,
 358                                                0, 0, SND_SOC_CLOCK_OUT);
 359
 360                 asoc_simple_clk_disable(dai);
 361         }
 362         for_each_prop_dai_codec(props, i, dai) {
 363                 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, i);
 364
 365                 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai))
 366                         snd_soc_dai_set_sysclk(codec_dai,
 367                                                0, 0, SND_SOC_CLOCK_IN);
 368
 369                 asoc_simple_clk_disable(dai);
 370         }
 371 }
 372 EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
 373
 374 static int asoc_simple_set_clk_rate(struct device *dev,
 375                                     struct asoc_simple_dai *simple_dai,
 376                                     unsigned long rate)
 377 {
 378         if (!simple_dai)
 379                 return 0;
 380
 381         if (simple_dai->clk_fixed && rate != simple_dai->sysclk) {
 382                 dev_err(dev, "dai %s invalid clock rate %lu\n", simple_dai->name, rate);
 383                 return -EINVAL;
 384         }
 385
 386         if (!simple_dai->clk)
 387                 return 0;
 388
 389         if (clk_get_rate(simple_dai->clk) == rate)
 390                 return 0;
 391
 392         return clk_set_rate(simple_dai->clk, rate);
 393 }
 394
 395 static int asoc_simple_set_tdm(struct snd_soc_dai *dai,
 396                                 struct asoc_simple_dai *simple_dai,
 397                                 struct snd_pcm_hw_params *params)
 398 {
 399         int sample_bits = params_width(params);
 400         int slot_width, slot_count;
 401         int i, ret;
 402
 403         if (!simple_dai || !simple_dai->tdm_width_map)
 404                 return 0;
 405
 406         slot_width = simple_dai->slot_width;
 407         slot_count = simple_dai->slots;
 408
 409         if (slot_width == 0)
 410                 slot_width = sample_bits;
 411
 412         for (i = 0; i < simple_dai->n_tdm_widths; ++i) {
 413                 if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) {
 414                         slot_width = simple_dai->tdm_width_map[i].slot_width;
 415                         slot_count = simple_dai->tdm_width_map[i].slot_count;
 416                         break;
 417                 }
 418         }
 419
 420         ret = snd_soc_dai_set_tdm_slot(dai,
 421                                        simple_dai->tx_slot_mask,
 422                                        simple_dai->rx_slot_mask,
 423                                        slot_count,
 424                                        slot_width);
 425         if (ret && ret != -ENOTSUPP) {
 426                 dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret);
 427                 return ret;
 428         }
 429
 430         return 0;
 431 }
 432
 433 int asoc_simple_hw_params(struct snd_pcm_substream *substream,
 434                           struct snd_pcm_hw_params *params)
 435 {
 436         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 437         struct asoc_simple_dai *pdai;
 438         struct snd_soc_dai *sdai;
 439         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 440         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 441         unsigned int mclk, mclk_fs = 0;
 442         int i, ret;
 443
 444         if (props->mclk_fs)
 445                 mclk_fs = props->mclk_fs;
 446
 447         if (mclk_fs) {
 448                 struct snd_soc_component *component;
 449                 mclk = params_rate(params) * mclk_fs;
 450
 451                 for_each_prop_dai_codec(props, i, pdai) {
 452                         ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
 453                         if (ret < 0)
 454                                 return ret;
 455                 }
 456
 457                 for_each_prop_dai_cpu(props, i, pdai) {
 458                         ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
 459                         if (ret < 0)
 460                                 return ret;
 461                 }
 462
 463                 /* Ensure sysclk is set on all components in case any
 464                  * (such as platform components) are missed by calls to
 465                  * snd_soc_dai_set_sysclk.
 466                  */
 467                 for_each_rtd_components(rtd, i, component) {
 468                         ret = snd_soc_component_set_sysclk(component, 0, 0,
 469                                                            mclk, SND_SOC_CLOCK_IN);
 470                         if (ret && ret != -ENOTSUPP)
 471                                 return ret;
 472                 }
 473
 474                 for_each_rtd_codec_dais(rtd, i, sdai) {
 475                         ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
 476                         if (ret && ret != -ENOTSUPP)
 477                                 return ret;
 478                 }
 479
 480                 for_each_rtd_cpu_dais(rtd, i, sdai) {
 481                         ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
 482                         if (ret && ret != -ENOTSUPP)
 483                                 return ret;
 484                 }
 485         }
 486
 487         for_each_prop_dai_codec(props, i, pdai) {
 488                 sdai = asoc_rtd_to_codec(rtd, i);
 489                 ret = asoc_simple_set_tdm(sdai, pdai, params);
 490                 if (ret < 0)
 491                         return ret;
 492         }
 493
 494         for_each_prop_dai_cpu(props, i, pdai) {
 495                 sdai = asoc_rtd_to_cpu(rtd, i);
 496                 ret = asoc_simple_set_tdm(sdai, pdai, params);
 497                 if (ret < 0)
 498                         return ret;
 499         }
 500
 501         return 0;
 502 }
 503 EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
 504
 505 int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 506                                    struct snd_pcm_hw_params *params)
 507 {
 508         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 509         struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
 510
 511         asoc_simple_convert_fixup(&dai_props->adata, params);
 512
 513         return 0;
 514 }
 515 EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
 516
 517 static int asoc_simple_init_dai(struct snd_soc_dai *dai,
 518                                      struct asoc_simple_dai *simple_dai)
 519 {
 520         int ret;
 521
 522         if (!simple_dai)
 523                 return 0;
 524
 525         if (simple_dai->sysclk) {
 526                 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
 527                                              simple_dai->clk_direction);
 528                 if (ret && ret != -ENOTSUPP) {
 529                         dev_err(dai->dev, "simple-card: set_sysclk error\n");
 530                         return ret;
 531                 }
 532         }
 533
 534         if (simple_dai->slots) {
 535                 ret = snd_soc_dai_set_tdm_slot(dai,
 536                                                simple_dai->tx_slot_mask,
 537                                                simple_dai->rx_slot_mask,
 538                                                simple_dai->slots,
 539                                                simple_dai->slot_width);
 540                 if (ret && ret != -ENOTSUPP) {
 541                         dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
 542                         return ret;
 543                 }
 544         }
 545
 546         return 0;
 547 }
 548
 549 static inline int asoc_simple_component_is_codec(struct snd_soc_component *component)
 550 {
 551         return component->driver->endianness;
 552 }
 553
 554 static int asoc_simple_init_for_codec2codec(struct snd_soc_pcm_runtime *rtd,
 555                                             struct simple_dai_props *dai_props)
 556 {
 557         struct snd_soc_dai_link *dai_link = rtd->dai_link;
 558         struct snd_soc_component *component;
 559         struct snd_soc_pcm_stream *params;
 560         struct snd_pcm_hardware hw;
 561         int i, ret, stream;
 562
 563         /* Do nothing if it already has Codec2Codec settings */
 564         if (dai_link->params)
 565                 return 0;
 566
 567         /* Do nothing if it was DPCM :: BE */
 568         if (dai_link->no_pcm)
 569                 return 0;
 570
 571         /* Only Codecs */
 572         for_each_rtd_components(rtd, i, component) {
 573                 if (!asoc_simple_component_is_codec(component))
 574                         return 0;
 575         }
 576
 577         /* Assumes the capabilities are the same for all supported streams */
 578         for_each_pcm_streams(stream) {
 579                 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
 580                 if (ret == 0)
 581                         break;
 582         }
 583
 584         if (ret < 0) {
 585                 dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
 586                 return ret;
 587         }
 588
 589         params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
 590         if (!params)
 591                 return -ENOMEM;
 592
 593         params->formats = hw.formats;
 594         params->rates = hw.rates;
 595         params->rate_min = hw.rate_min;
 596         params->rate_max = hw.rate_max;
 597         params->channels_min = hw.channels_min;
 598         params->channels_max = hw.channels_max;
 599
 600         dai_link->params = params;
 601         dai_link->num_params = 1;
 602
 603         return 0;
 604 }
 605
 606 int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
 607 {
 608         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 609         struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
 610         struct asoc_simple_dai *dai;
 611         int i, ret;
 612
 613         for_each_prop_dai_codec(props, i, dai) {
 614                 ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, i), dai);
 615                 if (ret < 0)
 616                         return ret;
 617         }
 618         for_each_prop_dai_cpu(props, i, dai) {
 619                 ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, i), dai);
 620                 if (ret < 0)
 621                         return ret;
 622         }
 623
 624         ret = asoc_simple_init_for_codec2codec(rtd, props);
 625         if (ret < 0)
 626                 return ret;
 627
 628         return 0;
 629 }
 630 EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
 631
 632 void asoc_simple_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
 633                                        struct snd_soc_dai_link_component *cpus)
 634 {
 635         /* Assumes platform == cpu */
 636         if (!platforms->of_node)
 637                 platforms->of_node = cpus->of_node;
 638 }
 639 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
 640
 641 void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
 642                                   int is_single_links)
 643 {
 644         /*
 645          * In soc_bind_dai_link() will check cpu name after
 646          * of_node matching if dai_link has cpu_dai_name.
 647          * but, it will never match if name was created by
 648          * fmt_single_name() remove cpu_dai_name if cpu_args
 649          * was 0. See:
 650          *      fmt_single_name()
 651          *      fmt_multiple_name()
 652          */
 653         if (is_single_links)
 654                 cpus->dai_name = NULL;
 655 }
 656 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
 657
 658 void asoc_simple_clean_reference(struct snd_soc_card *card)
 659 {
 660         struct snd_soc_dai_link *dai_link;
 661         struct snd_soc_dai_link_component *cpu;
 662         struct snd_soc_dai_link_component *codec;
 663         int i, j;
 664
 665         for_each_card_prelinks(card, i, dai_link) {
 666                 for_each_link_cpus(dai_link, j, cpu)
 667                         of_node_put(cpu->of_node);
 668                 for_each_link_codecs(dai_link, j, codec)
 669                         of_node_put(codec->of_node);
 670         }
 671 }
 672 EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
 673
 674 int asoc_simple_parse_routing(struct snd_soc_card *card,
 675                               char *prefix)
 676 {
 677         struct device_node *node = card->dev->of_node;
 678         char prop[128];
 679
 680         if (!prefix)
 681                 prefix = "";
 682
 683         snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
 684
 685         if (!of_property_read_bool(node, prop))
 686                 return 0;
 687
 688         return snd_soc_of_parse_audio_routing(card, prop);
 689 }
 690 EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
 691
 692 int asoc_simple_parse_widgets(struct snd_soc_card *card,
 693                               char *prefix)
 694 {
 695         struct device_node *node = card->dev->of_node;
 696         char prop[128];
 697
 698         if (!prefix)
 699                 prefix = "";
 700
 701         snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
 702
 703         if (of_property_read_bool(node, prop))
 704                 return snd_soc_of_parse_audio_simple_widgets(card, prop);
 705
 706         /* no widgets is not error */
 707         return 0;
 708 }
 709 EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
 710
 711 int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
 712                                    char *prefix)
 713 {
 714         char prop[128];
 715
 716         if (!prefix)
 717                 prefix = "";
 718
 719         snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
 720
 721         return snd_soc_of_parse_pin_switches(card, prop);
 722 }
 723 EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
 724
 725 int asoc_simple_init_jack(struct snd_soc_card *card,
 726                           struct asoc_simple_jack *sjack,
 727                           int is_hp, char *prefix,
 728                           char *pin)
 729 {
 730         struct device *dev = card->dev;
 731         struct gpio_desc *desc;
 732         char prop[128];
 733         char *pin_name;
 734         char *gpio_name;
 735         int mask;
 736         int error;
 737
 738         if (!prefix)
 739                 prefix = "";
 740
 741         sjack->gpio.gpio = -ENOENT;
 742
 743         if (is_hp) {
 744                 snprintf(prop, sizeof(prop), "%shp-det", prefix);
 745                 pin_name        = pin ? pin : "Headphones";
 746                 gpio_name       = "Headphone detection";
 747                 mask            = SND_JACK_HEADPHONE;
 748         } else {
 749                 snprintf(prop, sizeof(prop), "%smic-det", prefix);
 750                 pin_name        = pin ? pin : "Mic Jack";
 751                 gpio_name       = "Mic detection";
 752                 mask            = SND_JACK_MICROPHONE;
 753         }
 754
 755         desc = gpiod_get_optional(dev, prop, GPIOD_IN);
 756         error = PTR_ERR_OR_ZERO(desc);
 757         if (error)
 758                 return error;
 759
 760         if (desc) {
 761                 error = gpiod_set_consumer_name(desc, gpio_name);
 762                 if (error)
 763                         return error;
 764
 765                 sjack->pin.pin          = pin_name;
 766                 sjack->pin.mask         = mask;
 767
 768                 sjack->gpio.name        = gpio_name;
 769                 sjack->gpio.report      = mask;
 770                 sjack->gpio.desc        = desc;
 771                 sjack->gpio.debounce_time = 150;
 772
 773                 snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack,
 774                                            &sjack->pin, 1);
 775
 776                 snd_soc_jack_add_gpios(&sjack->jack, 1, &sjack->gpio);
 777         }
 778
 779         return 0;
 780 }
 781 EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
 782
 783 int asoc_simple_init_priv(struct asoc_simple_priv *priv,
 784                           struct link_info *li)
 785 {
 786         struct snd_soc_card *card = simple_priv_to_card(priv);
 787         struct device *dev = simple_priv_to_dev(priv);
 788         struct snd_soc_dai_link *dai_link;
 789         struct simple_dai_props *dai_props;
 790         struct asoc_simple_dai *dais;
 791         struct snd_soc_dai_link_component *dlcs;
 792         struct snd_soc_codec_conf *cconf = NULL;
 793         int i, dai_num = 0, dlc_num = 0, cnf_num = 0;
 794
 795         dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
 796         dai_link  = devm_kcalloc(dev, li->link, sizeof(*dai_link),  GFP_KERNEL);
 797         if (!dai_props || !dai_link)
 798                 return -ENOMEM;
 799
 800         /*
 801          * dais (= CPU+Codec)
 802          * dlcs (= CPU+Codec+Platform)
 803          */
 804         for (i = 0; i < li->link; i++) {
 805                 int cc = li->num[i].cpus + li->num[i].codecs;
 806
 807                 dai_num += cc;
 808                 dlc_num += cc + li->num[i].platforms;
 809
 810                 if (!li->num[i].cpus)
 811                         cnf_num += li->num[i].codecs;
 812         }
 813
 814         dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
 815         dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL);
 816         if (!dais || !dlcs)
 817                 return -ENOMEM;
 818
 819         if (cnf_num) {
 820                 cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
 821                 if (!cconf)
 822                         return -ENOMEM;
 823         }
 824
 825         dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
 826                 li->link, dai_num, cnf_num);
 827
 828         /* dummy CPU/Codec */
 829         priv->dummy.of_node     = NULL;
 830         priv->dummy.dai_name    = "snd-soc-dummy-dai";
 831         priv->dummy.name        = "snd-soc-dummy";
 832
 833         priv->dai_props         = dai_props;
 834         priv->dai_link          = dai_link;
 835         priv->dais              = dais;
 836         priv->dlcs              = dlcs;
 837         priv->codec_conf        = cconf;
 838
 839         card->dai_link          = priv->dai_link;
 840         card->num_links         = li->link;
 841         card->codec_conf        = cconf;
 842         card->num_configs       = cnf_num;
 843
 844         for (i = 0; i < li->link; i++) {
 845                 if (li->num[i].cpus) {
 846                         /* Normal CPU */
 847                         dai_props[i].cpus       =
 848                         dai_link[i].cpus        = dlcs;
 849                         dai_props[i].num.cpus   =
 850                         dai_link[i].num_cpus    = li->num[i].cpus;
 851                         dai_props[i].cpu_dai    = dais;
 852
 853                         dlcs += li->num[i].cpus;
 854                         dais += li->num[i].cpus;
 855                 } else {
 856                         /* DPCM Be's CPU = dummy */
 857                         dai_props[i].cpus       =
 858                         dai_link[i].cpus        = &priv->dummy;
 859                         dai_props[i].num.cpus   =
 860                         dai_link[i].num_cpus    = 1;
 861                 }
 862
 863                 if (li->num[i].codecs) {
 864                         /* Normal Codec */
 865                         dai_props[i].codecs     =
 866                         dai_link[i].codecs      = dlcs;
 867                         dai_props[i].num.codecs =
 868                         dai_link[i].num_codecs  = li->num[i].codecs;
 869                         dai_props[i].codec_dai  = dais;
 870
 871                         dlcs += li->num[i].codecs;
 872                         dais += li->num[i].codecs;
 873
 874                         if (!li->num[i].cpus) {
 875                                 /* DPCM Be's Codec */
 876                                 dai_props[i].codec_conf = cconf;
 877                                 cconf += li->num[i].codecs;
 878                         }
 879                 } else {
 880                         /* DPCM Fe's Codec = dummy */
 881                         dai_props[i].codecs     =
 882                         dai_link[i].codecs      = &priv->dummy;
 883                         dai_props[i].num.codecs =
 884                         dai_link[i].num_codecs  = 1;
 885                 }
 886
 887                 if (li->num[i].platforms) {
 888                         /* Have Platform */
 889                         dai_props[i].platforms          =
 890                         dai_link[i].platforms           = dlcs;
 891                         dai_props[i].num.platforms      =
 892                         dai_link[i].num_platforms       = li->num[i].platforms;
 893
 894                         dlcs += li->num[i].platforms;
 895                 } else {
 896                         /* Doesn't have Platform */
 897                         dai_props[i].platforms          =
 898                         dai_link[i].platforms           = NULL;
 899                         dai_props[i].num.platforms      =
 900                         dai_link[i].num_platforms       = 0;
 901                 }
 902         }
 903
 904         return 0;
 905 }
 906 EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
 907
 908 int asoc_simple_remove(struct platform_device *pdev)
 909 {
 910         struct snd_soc_card *card = platform_get_drvdata(pdev);
 911
 912         asoc_simple_clean_reference(card);
 913
 914         return 0;
 915 }
 916 EXPORT_SYMBOL_GPL(asoc_simple_remove);
 917
 918 int asoc_graph_card_probe(struct snd_soc_card *card)
 919 {
 920         struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
 921         int ret;
 922
 923         ret = asoc_simple_init_hp(card, &priv->hp_jack, NULL);
 924         if (ret < 0)
 925                 return ret;
 926
 927         ret = asoc_simple_init_mic(card, &priv->mic_jack, NULL);
 928         if (ret < 0)
 929                 return ret;
 930
 931         return 0;
 932 }
 933 EXPORT_SYMBOL_GPL(asoc_graph_card_probe);
 934
 935 int asoc_graph_is_ports0(struct device_node *np)
 936 {
 937         struct device_node *port, *ports, *ports0, *top;
 938         int ret;
 939
 940         /* np is "endpoint" or "port" */
 941         if (of_node_name_eq(np, "endpoint")) {
 942                 port = of_get_parent(np);
 943         } else {
 944                 port = np;
 945                 of_node_get(port);
 946         }
 947
 948         ports   = of_get_parent(port);
 949         top     = of_get_parent(ports);
 950         ports0  = of_get_child_by_name(top, "ports");
 951
 952         ret = ports0 == ports;
 953
 954         of_node_put(port);
 955         of_node_put(ports);
 956         of_node_put(ports0);
 957         of_node_put(top);
 958
 959         return ret;
 960 }
 961 EXPORT_SYMBOL_GPL(asoc_graph_is_ports0);
 962
 963 /* Module information */
 964 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 965 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
 966 MODULE_LICENSE("GPL v2");