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 simple_fixup_sample_fmt(struct simple_util_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 simple_util_parse_convert(struct device_node *np, 45 char *prefix, 46 struct simple_util_data *data) 47 { 48 char prop[128]; 49 50 if (!prefix) 51 prefix = ""; 52 53 /* sampling rate convert */ 54 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate"); 55 of_property_read_u32(np, prop, &data->convert_rate); 56 57 /* channels transfer */ 58 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels"); 59 of_property_read_u32(np, prop, &data->convert_channels); 60 61 /* convert sample format */ 62 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format"); 63 of_property_read_string(np, prop, &data->convert_sample_format); 64 } 65 EXPORT_SYMBOL_GPL(simple_util_parse_convert); 66 67 /** 68 * simple_util_is_convert_required() - Query if HW param conversion was requested 69 * @data: Link data. 70 * 71 * Returns true if any HW param conversion was requested for this DAI link with 72 * any "convert-xxx" properties. 73 */ 74 bool simple_util_is_convert_required(const struct simple_util_data *data) 75 { 76 return data->convert_rate || 77 data->convert_channels || 78 data->convert_sample_format; 79 } 80 EXPORT_SYMBOL_GPL(simple_util_is_convert_required); 81 82 int simple_util_parse_daifmt(struct device *dev, 83 struct device_node *node, 84 struct device_node *codec, 85 char *prefix, 86 unsigned int *retfmt) 87 { 88 struct device_node *bitclkmaster = NULL; 89 struct device_node *framemaster = NULL; 90 unsigned int daifmt; 91 92 daifmt = snd_soc_daifmt_parse_format(node, prefix); 93 94 snd_soc_daifmt_parse_clock_provider_as_phandle(node, prefix, &bitclkmaster, &framemaster); 95 if (!bitclkmaster && !framemaster) { 96 /* 97 * No dai-link level and master setting was not found from 98 * sound node level, revert back to legacy DT parsing and 99 * take the settings from codec node. 100 */ 101 dev_dbg(dev, "Revert to legacy daifmt parsing\n"); 102 103 daifmt |= snd_soc_daifmt_parse_clock_provider_as_flag(codec, NULL); 104 } else { 105 daifmt |= snd_soc_daifmt_clock_provider_from_bitmap( 106 ((codec == bitclkmaster) << 4) | (codec == framemaster)); 107 } 108 109 of_node_put(bitclkmaster); 110 of_node_put(framemaster); 111 112 *retfmt = daifmt; 113 114 return 0; 115 } 116 EXPORT_SYMBOL_GPL(simple_util_parse_daifmt); 117 118 int simple_util_parse_tdm_width_map(struct device *dev, struct device_node *np, 119 struct simple_util_dai *dai) 120 { 121 u32 *array_values, *p; 122 int n, i, ret; 123 124 if (!of_property_read_bool(np, "dai-tdm-slot-width-map")) 125 return 0; 126 127 n = of_property_count_elems_of_size(np, "dai-tdm-slot-width-map", sizeof(u32)); 128 if (n % 3) { 129 dev_err(dev, "Invalid number of cells for dai-tdm-slot-width-map\n"); 130 return -EINVAL; 131 } 132 133 dai->tdm_width_map = devm_kcalloc(dev, n, sizeof(*dai->tdm_width_map), GFP_KERNEL); 134 if (!dai->tdm_width_map) 135 return -ENOMEM; 136 137 array_values = kcalloc(n, sizeof(*array_values), GFP_KERNEL); 138 if (!array_values) 139 return -ENOMEM; 140 141 ret = of_property_read_u32_array(np, "dai-tdm-slot-width-map", array_values, n); 142 if (ret < 0) { 143 dev_err(dev, "Could not read dai-tdm-slot-width-map: %d\n", ret); 144 goto out; 145 } 146 147 p = array_values; 148 for (i = 0; i < n / 3; ++i) { 149 dai->tdm_width_map[i].sample_bits = *p++; 150 dai->tdm_width_map[i].slot_width = *p++; 151 dai->tdm_width_map[i].slot_count = *p++; 152 } 153 154 dai->n_tdm_widths = i; 155 ret = 0; 156 out: 157 kfree(array_values); 158 159 return ret; 160 } 161 EXPORT_SYMBOL_GPL(simple_util_parse_tdm_width_map); 162 163 int simple_util_set_dailink_name(struct device *dev, 164 struct snd_soc_dai_link *dai_link, 165 const char *fmt, ...) 166 { 167 va_list ap; 168 char *name = NULL; 169 int ret = -ENOMEM; 170 171 va_start(ap, fmt); 172 name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap); 173 va_end(ap); 174 175 if (name) { 176 ret = 0; 177 178 dai_link->name = name; 179 dai_link->stream_name = name; 180 } 181 182 return ret; 183 } 184 EXPORT_SYMBOL_GPL(simple_util_set_dailink_name); 185 186 int simple_util_parse_card_name(struct snd_soc_card *card, 187 char *prefix) 188 { 189 int ret; 190 191 if (!prefix) 192 prefix = ""; 193 194 /* Parse the card name from DT */ 195 ret = snd_soc_of_parse_card_name(card, "label"); 196 if (ret < 0 || !card->name) { 197 char prop[128]; 198 199 snprintf(prop, sizeof(prop), "%sname", prefix); 200 ret = snd_soc_of_parse_card_name(card, prop); 201 if (ret < 0) 202 return ret; 203 } 204 205 if (!card->name && card->dai_link) 206 card->name = card->dai_link->name; 207 208 return 0; 209 } 210 EXPORT_SYMBOL_GPL(simple_util_parse_card_name); 211 212 static int simple_clk_enable(struct simple_util_dai *dai) 213 { 214 if (dai) 215 return clk_prepare_enable(dai->clk); 216 217 return 0; 218 } 219 220 static void simple_clk_disable(struct simple_util_dai *dai) 221 { 222 if (dai) 223 clk_disable_unprepare(dai->clk); 224 } 225 226 int simple_util_parse_clk(struct device *dev, 227 struct device_node *node, 228 struct simple_util_dai *simple_dai, 229 struct snd_soc_dai_link_component *dlc) 230 { 231 struct clk *clk; 232 u32 val; 233 234 /* 235 * Parse dai->sysclk come from "clocks = <&xxx>" 236 * (if system has common clock) 237 * or "system-clock-frequency = <xxx>" 238 * or device's module clock. 239 */ 240 clk = devm_get_clk_from_child(dev, node, NULL); 241 simple_dai->clk_fixed = of_property_read_bool( 242 node, "system-clock-fixed"); 243 if (!IS_ERR(clk)) { 244 simple_dai->sysclk = clk_get_rate(clk); 245 246 simple_dai->clk = clk; 247 } else if (!of_property_read_u32(node, "system-clock-frequency", &val)) { 248 simple_dai->sysclk = val; 249 simple_dai->clk_fixed = true; 250 } else { 251 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL); 252 if (!IS_ERR(clk)) 253 simple_dai->sysclk = clk_get_rate(clk); 254 } 255 256 if (of_property_read_bool(node, "system-clock-direction-out")) 257 simple_dai->clk_direction = SND_SOC_CLOCK_OUT; 258 259 return 0; 260 } 261 EXPORT_SYMBOL_GPL(simple_util_parse_clk); 262 263 static int simple_check_fixed_sysclk(struct device *dev, 264 struct simple_util_dai *dai, 265 unsigned int *fixed_sysclk) 266 { 267 if (dai->clk_fixed) { 268 if (*fixed_sysclk && *fixed_sysclk != dai->sysclk) { 269 dev_err(dev, "inconsistent fixed sysclk rates (%u vs %u)\n", 270 *fixed_sysclk, dai->sysclk); 271 return -EINVAL; 272 } 273 *fixed_sysclk = dai->sysclk; 274 } 275 276 return 0; 277 } 278 279 int simple_util_startup(struct snd_pcm_substream *substream) 280 { 281 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 282 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card); 283 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num); 284 struct simple_util_dai *dai; 285 unsigned int fixed_sysclk = 0; 286 int i1, i2, i; 287 int ret; 288 289 for_each_prop_dai_cpu(props, i1, dai) { 290 ret = simple_clk_enable(dai); 291 if (ret) 292 goto cpu_err; 293 ret = simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk); 294 if (ret) 295 goto cpu_err; 296 } 297 298 for_each_prop_dai_codec(props, i2, dai) { 299 ret = simple_clk_enable(dai); 300 if (ret) 301 goto codec_err; 302 ret = simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk); 303 if (ret) 304 goto codec_err; 305 } 306 307 if (fixed_sysclk && props->mclk_fs) { 308 unsigned int fixed_rate = fixed_sysclk / props->mclk_fs; 309 310 if (fixed_sysclk % props->mclk_fs) { 311 dev_err(rtd->dev, "fixed sysclk %u not divisible by mclk_fs %u\n", 312 fixed_sysclk, props->mclk_fs); 313 return -EINVAL; 314 } 315 ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE, 316 fixed_rate, fixed_rate); 317 if (ret < 0) 318 goto codec_err; 319 } 320 321 return 0; 322 323 codec_err: 324 for_each_prop_dai_codec(props, i, dai) { 325 if (i >= i2) 326 break; 327 simple_clk_disable(dai); 328 } 329 cpu_err: 330 for_each_prop_dai_cpu(props, i, dai) { 331 if (i >= i1) 332 break; 333 simple_clk_disable(dai); 334 } 335 return ret; 336 } 337 EXPORT_SYMBOL_GPL(simple_util_startup); 338 339 void simple_util_shutdown(struct snd_pcm_substream *substream) 340 { 341 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 342 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card); 343 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num); 344 struct simple_util_dai *dai; 345 int i; 346 347 for_each_prop_dai_cpu(props, i, dai) { 348 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, i); 349 350 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai)) 351 snd_soc_dai_set_sysclk(cpu_dai, 352 0, 0, SND_SOC_CLOCK_OUT); 353 354 simple_clk_disable(dai); 355 } 356 for_each_prop_dai_codec(props, i, dai) { 357 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, i); 358 359 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai)) 360 snd_soc_dai_set_sysclk(codec_dai, 361 0, 0, SND_SOC_CLOCK_IN); 362 363 simple_clk_disable(dai); 364 } 365 } 366 EXPORT_SYMBOL_GPL(simple_util_shutdown); 367 368 static int simple_set_clk_rate(struct device *dev, 369 struct simple_util_dai *simple_dai, 370 unsigned long rate) 371 { 372 if (!simple_dai) 373 return 0; 374 375 if (simple_dai->clk_fixed && rate != simple_dai->sysclk) { 376 dev_err(dev, "dai %s invalid clock rate %lu\n", simple_dai->name, rate); 377 return -EINVAL; 378 } 379 380 if (!simple_dai->clk) 381 return 0; 382 383 if (clk_get_rate(simple_dai->clk) == rate) 384 return 0; 385 386 return clk_set_rate(simple_dai->clk, rate); 387 } 388 389 static int simple_set_tdm(struct snd_soc_dai *dai, 390 struct simple_util_dai *simple_dai, 391 struct snd_pcm_hw_params *params) 392 { 393 int sample_bits = params_width(params); 394 int slot_width, slot_count; 395 int i, ret; 396 397 if (!simple_dai || !simple_dai->tdm_width_map) 398 return 0; 399 400 slot_width = simple_dai->slot_width; 401 slot_count = simple_dai->slots; 402 403 if (slot_width == 0) 404 slot_width = sample_bits; 405 406 for (i = 0; i < simple_dai->n_tdm_widths; ++i) { 407 if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) { 408 slot_width = simple_dai->tdm_width_map[i].slot_width; 409 slot_count = simple_dai->tdm_width_map[i].slot_count; 410 break; 411 } 412 } 413 414 ret = snd_soc_dai_set_tdm_slot(dai, 415 simple_dai->tx_slot_mask, 416 simple_dai->rx_slot_mask, 417 slot_count, 418 slot_width); 419 if (ret && ret != -ENOTSUPP) { 420 dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret); 421 return ret; 422 } 423 424 return 0; 425 } 426 427 int simple_util_hw_params(struct snd_pcm_substream *substream, 428 struct snd_pcm_hw_params *params) 429 { 430 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 431 struct simple_util_dai *pdai; 432 struct snd_soc_dai *sdai; 433 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card); 434 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num); 435 unsigned int mclk, mclk_fs = 0; 436 int i, ret; 437 438 if (props->mclk_fs) 439 mclk_fs = props->mclk_fs; 440 441 if (mclk_fs) { 442 struct snd_soc_component *component; 443 mclk = params_rate(params) * mclk_fs; 444 445 for_each_prop_dai_codec(props, i, pdai) { 446 ret = simple_set_clk_rate(rtd->dev, pdai, mclk); 447 if (ret < 0) 448 return ret; 449 } 450 451 for_each_prop_dai_cpu(props, i, pdai) { 452 ret = simple_set_clk_rate(rtd->dev, pdai, mclk); 453 if (ret < 0) 454 return ret; 455 } 456 457 /* Ensure sysclk is set on all components in case any 458 * (such as platform components) are missed by calls to 459 * snd_soc_dai_set_sysclk. 460 */ 461 for_each_rtd_components(rtd, i, component) { 462 ret = snd_soc_component_set_sysclk(component, 0, 0, 463 mclk, SND_SOC_CLOCK_IN); 464 if (ret && ret != -ENOTSUPP) 465 return ret; 466 } 467 468 for_each_rtd_codec_dais(rtd, i, sdai) { 469 ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN); 470 if (ret && ret != -ENOTSUPP) 471 return ret; 472 } 473 474 for_each_rtd_cpu_dais(rtd, i, sdai) { 475 ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT); 476 if (ret && ret != -ENOTSUPP) 477 return ret; 478 } 479 } 480 481 for_each_prop_dai_codec(props, i, pdai) { 482 sdai = snd_soc_rtd_to_codec(rtd, i); 483 ret = simple_set_tdm(sdai, pdai, params); 484 if (ret < 0) 485 return ret; 486 } 487 488 for_each_prop_dai_cpu(props, i, pdai) { 489 sdai = snd_soc_rtd_to_cpu(rtd, i); 490 ret = simple_set_tdm(sdai, pdai, params); 491 if (ret < 0) 492 return ret; 493 } 494 495 return 0; 496 } 497 EXPORT_SYMBOL_GPL(simple_util_hw_params); 498 499 int simple_util_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 500 struct snd_pcm_hw_params *params) 501 { 502 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card); 503 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); 504 struct simple_util_data *data = &dai_props->adata; 505 struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 506 struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 507 508 if (data->convert_rate) 509 rate->min = 510 rate->max = data->convert_rate; 511 512 if (data->convert_channels) 513 channels->min = 514 channels->max = data->convert_channels; 515 516 if (data->convert_sample_format) 517 simple_fixup_sample_fmt(data, params); 518 519 return 0; 520 } 521 EXPORT_SYMBOL_GPL(simple_util_be_hw_params_fixup); 522 523 static int simple_init_dai(struct snd_soc_dai *dai, struct simple_util_dai *simple_dai) 524 { 525 int ret; 526 527 if (!simple_dai) 528 return 0; 529 530 if (simple_dai->sysclk) { 531 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk, 532 simple_dai->clk_direction); 533 if (ret && ret != -ENOTSUPP) { 534 dev_err(dai->dev, "simple-card: set_sysclk error\n"); 535 return ret; 536 } 537 } 538 539 if (simple_dai->slots) { 540 ret = snd_soc_dai_set_tdm_slot(dai, 541 simple_dai->tx_slot_mask, 542 simple_dai->rx_slot_mask, 543 simple_dai->slots, 544 simple_dai->slot_width); 545 if (ret && ret != -ENOTSUPP) { 546 dev_err(dai->dev, "simple-card: set_tdm_slot error\n"); 547 return ret; 548 } 549 } 550 551 return 0; 552 } 553 554 static inline int simple_component_is_codec(struct snd_soc_component *component) 555 { 556 return component->driver->endianness; 557 } 558 559 static int simple_init_for_codec2codec(struct snd_soc_pcm_runtime *rtd, 560 struct simple_dai_props *dai_props) 561 { 562 struct snd_soc_dai_link *dai_link = rtd->dai_link; 563 struct snd_soc_component *component; 564 struct snd_soc_pcm_stream *c2c_params; 565 struct snd_pcm_hardware hw; 566 int i, ret, stream; 567 568 /* Do nothing if it already has Codec2Codec settings */ 569 if (dai_link->c2c_params) 570 return 0; 571 572 /* Do nothing if it was DPCM :: BE */ 573 if (dai_link->no_pcm) 574 return 0; 575 576 /* Only Codecs */ 577 for_each_rtd_components(rtd, i, component) { 578 if (!simple_component_is_codec(component)) 579 return 0; 580 } 581 582 /* Assumes the capabilities are the same for all supported streams */ 583 for_each_pcm_streams(stream) { 584 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream); 585 if (ret == 0) 586 break; 587 } 588 589 if (ret < 0) { 590 dev_err(rtd->dev, "simple-card: no valid dai_link params\n"); 591 return ret; 592 } 593 594 c2c_params = devm_kzalloc(rtd->dev, sizeof(*c2c_params), GFP_KERNEL); 595 if (!c2c_params) 596 return -ENOMEM; 597 598 c2c_params->formats = hw.formats; 599 c2c_params->rates = hw.rates; 600 c2c_params->rate_min = hw.rate_min; 601 c2c_params->rate_max = hw.rate_max; 602 c2c_params->channels_min = hw.channels_min; 603 c2c_params->channels_max = hw.channels_max; 604 605 dai_link->c2c_params = c2c_params; 606 dai_link->num_c2c_params = 1; 607 608 return 0; 609 } 610 611 int simple_util_dai_init(struct snd_soc_pcm_runtime *rtd) 612 { 613 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card); 614 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num); 615 struct simple_util_dai *dai; 616 int i, ret; 617 618 for_each_prop_dai_codec(props, i, dai) { 619 ret = simple_init_dai(snd_soc_rtd_to_codec(rtd, i), dai); 620 if (ret < 0) 621 return ret; 622 } 623 for_each_prop_dai_cpu(props, i, dai) { 624 ret = simple_init_dai(snd_soc_rtd_to_cpu(rtd, i), dai); 625 if (ret < 0) 626 return ret; 627 } 628 629 ret = simple_init_for_codec2codec(rtd, props); 630 if (ret < 0) 631 return ret; 632 633 return 0; 634 } 635 EXPORT_SYMBOL_GPL(simple_util_dai_init); 636 637 void simple_util_canonicalize_platform(struct snd_soc_dai_link_component *platforms, 638 struct snd_soc_dai_link_component *cpus) 639 { 640 /* 641 * Assumes Platform == CPU 642 * 643 * Some CPU might be using soc-generic-dmaengine-pcm. This means CPU and Platform 644 * are different Component, but are sharing same component->dev. 645 * 646 * Let's assume Platform is same as CPU if it doesn't identify Platform on DT. 647 * see 648 * simple-card.c :: simple_count_noml() 649 */ 650 if (!platforms->of_node) 651 snd_soc_dlc_use_cpu_as_platform(platforms, cpus); 652 } 653 EXPORT_SYMBOL_GPL(simple_util_canonicalize_platform); 654 655 void simple_util_canonicalize_cpu(struct snd_soc_dai_link_component *cpus, 656 int is_single_links) 657 { 658 /* 659 * In soc_bind_dai_link() will check cpu name after 660 * of_node matching if dai_link has cpu_dai_name. 661 * but, it will never match if name was created by 662 * fmt_single_name() remove cpu_dai_name if cpu_args 663 * was 0. See: 664 * fmt_single_name() 665 * fmt_multiple_name() 666 */ 667 if (is_single_links) 668 cpus->dai_name = NULL; 669 } 670 EXPORT_SYMBOL_GPL(simple_util_canonicalize_cpu); 671 672 void simple_util_clean_reference(struct snd_soc_card *card) 673 { 674 struct snd_soc_dai_link *dai_link; 675 struct snd_soc_dai_link_component *cpu; 676 struct snd_soc_dai_link_component *codec; 677 int i, j; 678 679 for_each_card_prelinks(card, i, dai_link) { 680 for_each_link_cpus(dai_link, j, cpu) 681 of_node_put(cpu->of_node); 682 for_each_link_codecs(dai_link, j, codec) 683 of_node_put(codec->of_node); 684 } 685 } 686 EXPORT_SYMBOL_GPL(simple_util_clean_reference); 687 688 int simple_util_parse_routing(struct snd_soc_card *card, 689 char *prefix) 690 { 691 struct device_node *node = card->dev->of_node; 692 char prop[128]; 693 694 if (!prefix) 695 prefix = ""; 696 697 snprintf(prop, sizeof(prop), "%s%s", prefix, "routing"); 698 699 if (!of_property_read_bool(node, prop)) 700 return 0; 701 702 return snd_soc_of_parse_audio_routing(card, prop); 703 } 704 EXPORT_SYMBOL_GPL(simple_util_parse_routing); 705 706 int simple_util_parse_widgets(struct snd_soc_card *card, 707 char *prefix) 708 { 709 struct device_node *node = card->dev->of_node; 710 char prop[128]; 711 712 if (!prefix) 713 prefix = ""; 714 715 snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets"); 716 717 if (of_property_read_bool(node, prop)) 718 return snd_soc_of_parse_audio_simple_widgets(card, prop); 719 720 /* no widgets is not error */ 721 return 0; 722 } 723 EXPORT_SYMBOL_GPL(simple_util_parse_widgets); 724 725 int simple_util_parse_pin_switches(struct snd_soc_card *card, 726 char *prefix) 727 { 728 char prop[128]; 729 730 if (!prefix) 731 prefix = ""; 732 733 snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches"); 734 735 return snd_soc_of_parse_pin_switches(card, prop); 736 } 737 EXPORT_SYMBOL_GPL(simple_util_parse_pin_switches); 738 739 int simple_util_init_jack(struct snd_soc_card *card, 740 struct simple_util_jack *sjack, 741 int is_hp, char *prefix, 742 char *pin) 743 { 744 struct device *dev = card->dev; 745 struct gpio_desc *desc; 746 char prop[128]; 747 char *pin_name; 748 char *gpio_name; 749 int mask; 750 int error; 751 752 if (!prefix) 753 prefix = ""; 754 755 sjack->gpio.gpio = -ENOENT; 756 757 if (is_hp) { 758 snprintf(prop, sizeof(prop), "%shp-det", prefix); 759 pin_name = pin ? pin : "Headphones"; 760 gpio_name = "Headphone detection"; 761 mask = SND_JACK_HEADPHONE; 762 } else { 763 snprintf(prop, sizeof(prop), "%smic-det", prefix); 764 pin_name = pin ? pin : "Mic Jack"; 765 gpio_name = "Mic detection"; 766 mask = SND_JACK_MICROPHONE; 767 } 768 769 desc = gpiod_get_optional(dev, prop, GPIOD_IN); 770 error = PTR_ERR_OR_ZERO(desc); 771 if (error) 772 return error; 773 774 if (desc) { 775 error = gpiod_set_consumer_name(desc, gpio_name); 776 if (error) 777 return error; 778 779 sjack->pin.pin = pin_name; 780 sjack->pin.mask = mask; 781 782 sjack->gpio.name = gpio_name; 783 sjack->gpio.report = mask; 784 sjack->gpio.desc = desc; 785 sjack->gpio.debounce_time = 150; 786 787 snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack, 788 &sjack->pin, 1); 789 790 snd_soc_jack_add_gpios(&sjack->jack, 1, &sjack->gpio); 791 } 792 793 return 0; 794 } 795 EXPORT_SYMBOL_GPL(simple_util_init_jack); 796 797 int simple_util_init_aux_jacks(struct simple_util_priv *priv, char *prefix) 798 { 799 struct snd_soc_card *card = simple_priv_to_card(priv); 800 struct snd_soc_component *component; 801 int found_jack_index = 0; 802 int type = 0; 803 int num = 0; 804 int ret; 805 806 if (priv->aux_jacks) 807 return 0; 808 809 for_each_card_auxs(card, component) { 810 type = snd_soc_component_get_jack_type(component); 811 if (type > 0) 812 num++; 813 } 814 if (num < 1) 815 return 0; 816 817 priv->aux_jacks = devm_kcalloc(card->dev, num, 818 sizeof(struct snd_soc_jack), GFP_KERNEL); 819 if (!priv->aux_jacks) 820 return -ENOMEM; 821 822 for_each_card_auxs(card, component) { 823 char id[128]; 824 struct snd_soc_jack *jack; 825 826 if (found_jack_index >= num) 827 break; 828 829 type = snd_soc_component_get_jack_type(component); 830 if (type <= 0) 831 continue; 832 833 /* create jack */ 834 jack = &(priv->aux_jacks[found_jack_index++]); 835 snprintf(id, sizeof(id), "%s-jack", component->name); 836 ret = snd_soc_card_jack_new(card, id, type, jack); 837 if (ret) 838 continue; 839 840 (void)snd_soc_component_set_jack(component, jack, NULL); 841 } 842 return 0; 843 } 844 EXPORT_SYMBOL_GPL(simple_util_init_aux_jacks); 845 846 int simple_util_init_priv(struct simple_util_priv *priv, 847 struct link_info *li) 848 { 849 struct snd_soc_card *card = simple_priv_to_card(priv); 850 struct device *dev = simple_priv_to_dev(priv); 851 struct snd_soc_dai_link *dai_link; 852 struct simple_dai_props *dai_props; 853 struct simple_util_dai *dais; 854 struct snd_soc_dai_link_component *dlcs; 855 struct snd_soc_codec_conf *cconf = NULL; 856 int i, dai_num = 0, dlc_num = 0, cnf_num = 0; 857 858 dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL); 859 dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL); 860 if (!dai_props || !dai_link) 861 return -ENOMEM; 862 863 /* 864 * dais (= CPU+Codec) 865 * dlcs (= CPU+Codec+Platform) 866 */ 867 for (i = 0; i < li->link; i++) { 868 int cc = li->num[i].cpus + li->num[i].codecs; 869 870 dai_num += cc; 871 dlc_num += cc + li->num[i].platforms; 872 873 if (!li->num[i].cpus) 874 cnf_num += li->num[i].codecs; 875 } 876 877 dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL); 878 dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL); 879 if (!dais || !dlcs) 880 return -ENOMEM; 881 882 if (cnf_num) { 883 cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL); 884 if (!cconf) 885 return -ENOMEM; 886 } 887 888 dev_dbg(dev, "link %d, dais %d, ccnf %d\n", 889 li->link, dai_num, cnf_num); 890 891 priv->dai_props = dai_props; 892 priv->dai_link = dai_link; 893 priv->dais = dais; 894 priv->dlcs = dlcs; 895 priv->codec_conf = cconf; 896 897 card->dai_link = priv->dai_link; 898 card->num_links = li->link; 899 card->codec_conf = cconf; 900 card->num_configs = cnf_num; 901 902 for (i = 0; i < li->link; i++) { 903 if (li->num[i].cpus) { 904 /* Normal CPU */ 905 dai_link[i].cpus = dlcs; 906 dai_props[i].num.cpus = 907 dai_link[i].num_cpus = li->num[i].cpus; 908 dai_props[i].cpu_dai = dais; 909 910 dlcs += li->num[i].cpus; 911 dais += li->num[i].cpus; 912 } else { 913 /* DPCM Be's CPU = dummy */ 914 dai_link[i].cpus = &snd_soc_dummy_dlc; 915 dai_props[i].num.cpus = 916 dai_link[i].num_cpus = 1; 917 } 918 919 if (li->num[i].codecs) { 920 /* Normal Codec */ 921 dai_link[i].codecs = dlcs; 922 dai_props[i].num.codecs = 923 dai_link[i].num_codecs = li->num[i].codecs; 924 dai_props[i].codec_dai = dais; 925 926 dlcs += li->num[i].codecs; 927 dais += li->num[i].codecs; 928 929 if (!li->num[i].cpus) { 930 /* DPCM Be's Codec */ 931 dai_props[i].codec_conf = cconf; 932 cconf += li->num[i].codecs; 933 } 934 } else { 935 /* DPCM Fe's Codec = dummy */ 936 dai_link[i].codecs = &snd_soc_dummy_dlc; 937 dai_props[i].num.codecs = 938 dai_link[i].num_codecs = 1; 939 } 940 941 if (li->num[i].platforms) { 942 /* Have Platform */ 943 dai_link[i].platforms = dlcs; 944 dai_props[i].num.platforms = 945 dai_link[i].num_platforms = li->num[i].platforms; 946 947 dlcs += li->num[i].platforms; 948 } else { 949 /* Doesn't have Platform */ 950 dai_link[i].platforms = NULL; 951 dai_props[i].num.platforms = 952 dai_link[i].num_platforms = 0; 953 } 954 } 955 956 return 0; 957 } 958 EXPORT_SYMBOL_GPL(simple_util_init_priv); 959 960 int simple_util_remove(struct platform_device *pdev) 961 { 962 struct snd_soc_card *card = platform_get_drvdata(pdev); 963 964 simple_util_clean_reference(card); 965 966 return 0; 967 } 968 EXPORT_SYMBOL_GPL(simple_util_remove); 969 970 int graph_util_card_probe(struct snd_soc_card *card) 971 { 972 struct simple_util_priv *priv = snd_soc_card_get_drvdata(card); 973 int ret; 974 975 ret = simple_util_init_hp(card, &priv->hp_jack, NULL); 976 if (ret < 0) 977 return ret; 978 979 ret = simple_util_init_mic(card, &priv->mic_jack, NULL); 980 if (ret < 0) 981 return ret; 982 983 return 0; 984 } 985 EXPORT_SYMBOL_GPL(graph_util_card_probe); 986 987 int graph_util_is_ports0(struct device_node *np) 988 { 989 struct device_node *port, *ports, *ports0, *top; 990 int ret; 991 992 /* np is "endpoint" or "port" */ 993 if (of_node_name_eq(np, "endpoint")) { 994 port = of_get_parent(np); 995 } else { 996 port = np; 997 of_node_get(port); 998 } 999 1000 ports = of_get_parent(port); 1001 top = of_get_parent(ports); 1002 ports0 = of_get_child_by_name(top, "ports"); 1003 1004 ret = ports0 == ports; 1005 1006 of_node_put(port); 1007 of_node_put(ports); 1008 of_node_put(ports0); 1009 of_node_put(top); 1010 1011 return ret; 1012 } 1013 EXPORT_SYMBOL_GPL(graph_util_is_ports0); 1014 1015 static int graph_get_dai_id(struct device_node *ep) 1016 { 1017 struct device_node *node; 1018 struct device_node *endpoint; 1019 struct of_endpoint info; 1020 int i, id; 1021 int ret; 1022 1023 /* use driver specified DAI ID if exist */ 1024 ret = snd_soc_get_dai_id(ep); 1025 if (ret != -ENOTSUPP) 1026 return ret; 1027 1028 /* use endpoint/port reg if exist */ 1029 ret = of_graph_parse_endpoint(ep, &info); 1030 if (ret == 0) { 1031 /* 1032 * Because it will count port/endpoint if it doesn't have "reg". 1033 * But, we can't judge whether it has "no reg", or "reg = <0>" 1034 * only of_graph_parse_endpoint(). 1035 * We need to check "reg" property 1036 */ 1037 if (of_property_present(ep, "reg")) 1038 return info.id; 1039 1040 node = of_get_parent(ep); 1041 ret = of_property_present(node, "reg"); 1042 of_node_put(node); 1043 if (ret) 1044 return info.port; 1045 } 1046 node = of_graph_get_port_parent(ep); 1047 1048 /* 1049 * Non HDMI sound case, counting port/endpoint on its DT 1050 * is enough. Let's count it. 1051 */ 1052 i = 0; 1053 id = -1; 1054 for_each_endpoint_of_node(node, endpoint) { 1055 if (endpoint == ep) 1056 id = i; 1057 i++; 1058 } 1059 1060 of_node_put(node); 1061 1062 if (id < 0) 1063 return -ENODEV; 1064 1065 return id; 1066 } 1067 1068 int graph_util_parse_dai(struct device *dev, struct device_node *ep, 1069 struct snd_soc_dai_link_component *dlc, int *is_single_link) 1070 { 1071 struct device_node *node; 1072 struct of_phandle_args args = {}; 1073 struct snd_soc_dai *dai; 1074 int ret; 1075 1076 if (!ep) 1077 return 0; 1078 1079 node = of_graph_get_port_parent(ep); 1080 1081 /* 1082 * Try to find from DAI node 1083 */ 1084 args.np = ep; 1085 dai = snd_soc_get_dai_via_args(&args); 1086 if (dai) { 1087 dlc->dai_name = snd_soc_dai_name_get(dai); 1088 dlc->dai_args = snd_soc_copy_dai_args(dev, &args); 1089 if (!dlc->dai_args) 1090 return -ENOMEM; 1091 1092 goto parse_dai_end; 1093 } 1094 1095 /* Get dai->name */ 1096 args.np = node; 1097 args.args[0] = graph_get_dai_id(ep); 1098 args.args_count = (of_graph_get_endpoint_count(node) > 1); 1099 1100 /* 1101 * FIXME 1102 * 1103 * Here, dlc->dai_name is pointer to CPU/Codec DAI name. 1104 * If user unbinded CPU or Codec driver, but not for Sound Card, 1105 * dlc->dai_name is keeping unbinded CPU or Codec 1106 * driver's pointer. 1107 * 1108 * If user re-bind CPU or Codec driver again, ALSA SoC will try 1109 * to rebind Card via snd_soc_try_rebind_card(), but because of 1110 * above reason, it might can't bind Sound Card. 1111 * Because Sound Card is pointing to released dai_name pointer. 1112 * 1113 * To avoid this rebind Card issue, 1114 * 1) It needs to alloc memory to keep dai_name eventhough 1115 * CPU or Codec driver was unbinded, or 1116 * 2) user need to rebind Sound Card everytime 1117 * if he unbinded CPU or Codec. 1118 */ 1119 ret = snd_soc_get_dlc(&args, dlc); 1120 if (ret < 0) { 1121 of_node_put(node); 1122 return ret; 1123 } 1124 1125 parse_dai_end: 1126 if (is_single_link) 1127 *is_single_link = of_graph_get_endpoint_count(node) == 1; 1128 1129 return 0; 1130 } 1131 EXPORT_SYMBOL_GPL(graph_util_parse_dai); 1132 1133 /* Module information */ 1134 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1135 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); 1136 MODULE_LICENSE("GPL v2"); 1137