1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // ASoC simple sound card support 4 // 5 // Copyright (C) 2012 Renesas Solutions Corp. 6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7 8 #include <linux/clk.h> 9 #include <linux/device.h> 10 #include <linux/module.h> 11 #include <linux/of.h> 12 #include <linux/of_device.h> 13 #include <linux/platform_device.h> 14 #include <linux/string.h> 15 #include <sound/simple_card.h> 16 #include <sound/soc-dai.h> 17 #include <sound/soc.h> 18 19 #define DPCM_SELECTABLE 1 20 21 #define DAI "sound-dai" 22 #define CELL "#sound-dai-cells" 23 #define PREFIX "simple-audio-card," 24 25 static const struct snd_soc_ops simple_ops = { 26 .startup = asoc_simple_startup, 27 .shutdown = asoc_simple_shutdown, 28 .hw_params = asoc_simple_hw_params, 29 }; 30 31 static int asoc_simple_parse_dai(struct device_node *node, 32 struct snd_soc_dai_link_component *dlc, 33 int *is_single_link) 34 { 35 struct of_phandle_args args; 36 int ret; 37 38 if (!node) 39 return 0; 40 41 /* 42 * Get node via "sound-dai = <&phandle port>" 43 * it will be used as xxx_of_node on soc_bind_dai_link() 44 */ 45 ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args); 46 if (ret) 47 return ret; 48 49 /* 50 * FIXME 51 * 52 * Here, dlc->dai_name is pointer to CPU/Codec DAI name. 53 * If user unbinded CPU or Codec driver, but not for Sound Card, 54 * dlc->dai_name is keeping unbinded CPU or Codec 55 * driver's pointer. 56 * 57 * If user re-bind CPU or Codec driver again, ALSA SoC will try 58 * to rebind Card via snd_soc_try_rebind_card(), but because of 59 * above reason, it might can't bind Sound Card. 60 * Because Sound Card is pointing to released dai_name pointer. 61 * 62 * To avoid this rebind Card issue, 63 * 1) It needs to alloc memory to keep dai_name eventhough 64 * CPU or Codec driver was unbinded, or 65 * 2) user need to rebind Sound Card everytime 66 * if he unbinded CPU or Codec. 67 */ 68 ret = snd_soc_of_get_dai_name(node, &dlc->dai_name); 69 if (ret < 0) 70 return ret; 71 72 dlc->of_node = args.np; 73 74 if (is_single_link) 75 *is_single_link = !args.args_count; 76 77 return 0; 78 } 79 80 static void simple_parse_convert(struct device *dev, 81 struct device_node *np, 82 struct asoc_simple_data *adata) 83 { 84 struct device_node *top = dev->of_node; 85 struct device_node *node = of_get_parent(np); 86 87 asoc_simple_parse_convert(top, PREFIX, adata); 88 asoc_simple_parse_convert(node, PREFIX, adata); 89 asoc_simple_parse_convert(node, NULL, adata); 90 asoc_simple_parse_convert(np, NULL, adata); 91 92 of_node_put(node); 93 } 94 95 static void simple_parse_mclk_fs(struct device_node *top, 96 struct device_node *cpu, 97 struct device_node *codec, 98 struct simple_dai_props *props, 99 char *prefix) 100 { 101 struct device_node *node = of_get_parent(cpu); 102 char prop[128]; 103 104 snprintf(prop, sizeof(prop), "%smclk-fs", PREFIX); 105 of_property_read_u32(top, prop, &props->mclk_fs); 106 107 snprintf(prop, sizeof(prop), "%smclk-fs", prefix); 108 of_property_read_u32(node, prop, &props->mclk_fs); 109 of_property_read_u32(cpu, prop, &props->mclk_fs); 110 of_property_read_u32(codec, prop, &props->mclk_fs); 111 112 of_node_put(node); 113 } 114 115 static int simple_dai_link_of_dpcm(struct asoc_simple_priv *priv, 116 struct device_node *np, 117 struct device_node *codec, 118 struct link_info *li, 119 bool is_top) 120 { 121 struct device *dev = simple_priv_to_dev(priv); 122 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 123 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 124 struct asoc_simple_dai *dai; 125 struct snd_soc_dai_link_component *cpus = asoc_link_to_cpu(dai_link, 0); 126 struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, 0); 127 struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, 0); 128 struct device_node *top = dev->of_node; 129 struct device_node *node = of_get_parent(np); 130 char *prefix = ""; 131 int ret; 132 133 dev_dbg(dev, "link_of DPCM (%pOF)\n", np); 134 135 li->link++; 136 137 /* For single DAI link & old style of DT node */ 138 if (is_top) 139 prefix = PREFIX; 140 141 if (li->cpu) { 142 int is_single_links = 0; 143 144 /* Codec is dummy */ 145 146 /* FE settings */ 147 dai_link->dynamic = 1; 148 dai_link->dpcm_merged_format = 1; 149 150 dai = simple_props_to_dai_cpu(dai_props, 0); 151 152 ret = asoc_simple_parse_dai(np, cpus, &is_single_links); 153 if (ret) 154 goto out_put_node; 155 156 ret = asoc_simple_parse_clk(dev, np, dai, cpus); 157 if (ret < 0) 158 goto out_put_node; 159 160 ret = asoc_simple_set_dailink_name(dev, dai_link, 161 "fe.%s", 162 cpus->dai_name); 163 if (ret < 0) 164 goto out_put_node; 165 166 asoc_simple_canonicalize_cpu(cpus, is_single_links); 167 asoc_simple_canonicalize_platform(platforms, cpus); 168 } else { 169 struct snd_soc_codec_conf *cconf; 170 171 /* CPU is dummy */ 172 173 /* BE settings */ 174 dai_link->no_pcm = 1; 175 dai_link->be_hw_params_fixup = asoc_simple_be_hw_params_fixup; 176 177 dai = simple_props_to_dai_codec(dai_props, 0); 178 cconf = simple_props_to_codec_conf(dai_props, 0); 179 180 ret = asoc_simple_parse_dai(np, codecs, NULL); 181 if (ret < 0) 182 goto out_put_node; 183 184 ret = asoc_simple_parse_clk(dev, np, dai, codecs); 185 if (ret < 0) 186 goto out_put_node; 187 188 ret = asoc_simple_set_dailink_name(dev, dai_link, 189 "be.%s", 190 codecs->dai_name); 191 if (ret < 0) 192 goto out_put_node; 193 194 /* check "prefix" from top node */ 195 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 196 PREFIX "prefix"); 197 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 198 "prefix"); 199 snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node, 200 "prefix"); 201 } 202 203 simple_parse_convert(dev, np, &dai_props->adata); 204 simple_parse_mclk_fs(top, np, codec, dai_props, prefix); 205 206 ret = asoc_simple_parse_tdm(np, dai); 207 if (ret) 208 goto out_put_node; 209 210 ret = asoc_simple_parse_daifmt(dev, node, codec, 211 prefix, &dai_link->dai_fmt); 212 if (ret < 0) 213 goto out_put_node; 214 215 snd_soc_dai_link_set_capabilities(dai_link); 216 217 dai_link->ops = &simple_ops; 218 dai_link->init = asoc_simple_dai_init; 219 220 out_put_node: 221 of_node_put(node); 222 return ret; 223 } 224 225 static int simple_dai_link_of(struct asoc_simple_priv *priv, 226 struct device_node *np, 227 struct device_node *codec, 228 struct link_info *li, 229 bool is_top) 230 { 231 struct device *dev = simple_priv_to_dev(priv); 232 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 233 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 234 struct asoc_simple_dai *cpu_dai = simple_props_to_dai_cpu(dai_props, 0); 235 struct asoc_simple_dai *codec_dai = simple_props_to_dai_codec(dai_props, 0); 236 struct snd_soc_dai_link_component *cpus = asoc_link_to_cpu(dai_link, 0); 237 struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, 0); 238 struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, 0); 239 struct device_node *top = dev->of_node; 240 struct device_node *cpu = NULL; 241 struct device_node *node = NULL; 242 struct device_node *plat = NULL; 243 char prop[128]; 244 char *prefix = ""; 245 int ret, single_cpu = 0; 246 247 cpu = np; 248 node = of_get_parent(np); 249 li->link++; 250 251 dev_dbg(dev, "link_of (%pOF)\n", node); 252 253 /* For single DAI link & old style of DT node */ 254 if (is_top) 255 prefix = PREFIX; 256 257 snprintf(prop, sizeof(prop), "%splat", prefix); 258 plat = of_get_child_by_name(node, prop); 259 260 ret = asoc_simple_parse_daifmt(dev, node, codec, 261 prefix, &dai_link->dai_fmt); 262 if (ret < 0) 263 goto dai_link_of_err; 264 265 simple_parse_mclk_fs(top, cpu, codec, dai_props, prefix); 266 267 ret = asoc_simple_parse_dai(cpu, cpus, &single_cpu); 268 if (ret < 0) 269 goto dai_link_of_err; 270 271 ret = asoc_simple_parse_dai(codec, codecs, NULL); 272 if (ret < 0) 273 goto dai_link_of_err; 274 275 ret = asoc_simple_parse_dai(plat, platforms, NULL); 276 if (ret < 0) 277 goto dai_link_of_err; 278 279 ret = asoc_simple_parse_tdm(cpu, cpu_dai); 280 if (ret < 0) 281 goto dai_link_of_err; 282 283 ret = asoc_simple_parse_tdm(codec, codec_dai); 284 if (ret < 0) 285 goto dai_link_of_err; 286 287 ret = asoc_simple_parse_clk(dev, cpu, cpu_dai, cpus); 288 if (ret < 0) 289 goto dai_link_of_err; 290 291 ret = asoc_simple_parse_clk(dev, codec, codec_dai, codecs); 292 if (ret < 0) 293 goto dai_link_of_err; 294 295 ret = asoc_simple_set_dailink_name(dev, dai_link, 296 "%s-%s", 297 cpus->dai_name, 298 codecs->dai_name); 299 if (ret < 0) 300 goto dai_link_of_err; 301 302 dai_link->ops = &simple_ops; 303 dai_link->init = asoc_simple_dai_init; 304 305 asoc_simple_canonicalize_cpu(cpus, single_cpu); 306 asoc_simple_canonicalize_platform(platforms, cpus); 307 308 dai_link_of_err: 309 of_node_put(plat); 310 of_node_put(node); 311 312 return ret; 313 } 314 315 static int __simple_for_each_link(struct asoc_simple_priv *priv, 316 struct link_info *li, 317 int (*func_noml)(struct asoc_simple_priv *priv, 318 struct device_node *np, 319 struct device_node *codec, 320 struct link_info *li, bool is_top), 321 int (*func_dpcm)(struct asoc_simple_priv *priv, 322 struct device_node *np, 323 struct device_node *codec, 324 struct link_info *li, bool is_top)) 325 { 326 struct device *dev = simple_priv_to_dev(priv); 327 struct device_node *top = dev->of_node; 328 struct device_node *node; 329 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev); 330 bool is_top = 0; 331 int ret = 0; 332 333 /* Check if it has dai-link */ 334 node = of_get_child_by_name(top, PREFIX "dai-link"); 335 if (!node) { 336 node = of_node_get(top); 337 is_top = 1; 338 } 339 340 /* loop for all dai-link */ 341 do { 342 struct asoc_simple_data adata; 343 struct device_node *codec; 344 struct device_node *plat; 345 struct device_node *np; 346 int num = of_get_child_count(node); 347 348 /* get codec */ 349 codec = of_get_child_by_name(node, is_top ? 350 PREFIX "codec" : "codec"); 351 if (!codec) { 352 ret = -ENODEV; 353 goto error; 354 } 355 /* get platform */ 356 plat = of_get_child_by_name(node, is_top ? 357 PREFIX "plat" : "plat"); 358 359 /* get convert-xxx property */ 360 memset(&adata, 0, sizeof(adata)); 361 for_each_child_of_node(node, np) 362 simple_parse_convert(dev, np, &adata); 363 364 /* loop for all CPU/Codec node */ 365 for_each_child_of_node(node, np) { 366 if (plat == np) 367 continue; 368 /* 369 * It is DPCM 370 * if it has many CPUs, 371 * or has convert-xxx property 372 */ 373 if (dpcm_selectable && 374 (num > 2 || 375 adata.convert_rate || adata.convert_channels)) { 376 /* 377 * np 378 * |1(CPU)|0(Codec) li->cpu 379 * CPU |Pass |return 380 * Codec |return|Pass 381 */ 382 if (li->cpu != (np == codec)) 383 ret = func_dpcm(priv, np, codec, li, is_top); 384 /* else normal sound */ 385 } else { 386 /* 387 * np 388 * |1(CPU)|0(Codec) li->cpu 389 * CPU |Pass |return 390 * Codec |return|return 391 */ 392 if (li->cpu && (np != codec)) 393 ret = func_noml(priv, np, codec, li, is_top); 394 } 395 396 if (ret < 0) { 397 of_node_put(codec); 398 of_node_put(np); 399 goto error; 400 } 401 } 402 403 of_node_put(codec); 404 node = of_get_next_child(top, node); 405 } while (!is_top && node); 406 407 error: 408 of_node_put(node); 409 return ret; 410 } 411 412 static int simple_for_each_link(struct asoc_simple_priv *priv, 413 struct link_info *li, 414 int (*func_noml)(struct asoc_simple_priv *priv, 415 struct device_node *np, 416 struct device_node *codec, 417 struct link_info *li, bool is_top), 418 int (*func_dpcm)(struct asoc_simple_priv *priv, 419 struct device_node *np, 420 struct device_node *codec, 421 struct link_info *li, bool is_top)) 422 { 423 int ret; 424 /* 425 * Detect all CPU first, and Detect all Codec 2nd. 426 * 427 * In Normal sound case, all DAIs are detected 428 * as "CPU-Codec". 429 * 430 * In DPCM sound case, 431 * all CPUs are detected as "CPU-dummy", and 432 * all Codecs are detected as "dummy-Codec". 433 * To avoid random sub-device numbering, 434 * detect "dummy-Codec" in last; 435 */ 436 for (li->cpu = 1; li->cpu >= 0; li->cpu--) { 437 ret = __simple_for_each_link(priv, li, func_noml, func_dpcm); 438 if (ret < 0) 439 break; 440 } 441 442 return ret; 443 } 444 445 static int simple_parse_of(struct asoc_simple_priv *priv, struct link_info *li) 446 { 447 struct snd_soc_card *card = simple_priv_to_card(priv); 448 int ret; 449 450 ret = asoc_simple_parse_widgets(card, PREFIX); 451 if (ret < 0) 452 return ret; 453 454 ret = asoc_simple_parse_routing(card, PREFIX); 455 if (ret < 0) 456 return ret; 457 458 ret = asoc_simple_parse_pin_switches(card, PREFIX); 459 if (ret < 0) 460 return ret; 461 462 /* Single/Muti DAI link(s) & New style of DT node */ 463 memset(li, 0, sizeof(*li)); 464 ret = simple_for_each_link(priv, li, 465 simple_dai_link_of, 466 simple_dai_link_of_dpcm); 467 if (ret < 0) 468 return ret; 469 470 ret = asoc_simple_parse_card_name(card, PREFIX); 471 if (ret < 0) 472 return ret; 473 474 ret = snd_soc_of_parse_aux_devs(card, PREFIX "aux-devs"); 475 476 return ret; 477 } 478 479 static int simple_count_noml(struct asoc_simple_priv *priv, 480 struct device_node *np, 481 struct device_node *codec, 482 struct link_info *li, bool is_top) 483 { 484 if (li->link >= SNDRV_MAX_LINKS) { 485 struct device *dev = simple_priv_to_dev(priv); 486 487 dev_err(dev, "too many links\n"); 488 return -EINVAL; 489 } 490 491 li->num[li->link].cpus = 1; 492 li->num[li->link].codecs = 1; 493 li->num[li->link].platforms = 1; 494 495 li->link += 1; 496 497 return 0; 498 } 499 500 static int simple_count_dpcm(struct asoc_simple_priv *priv, 501 struct device_node *np, 502 struct device_node *codec, 503 struct link_info *li, bool is_top) 504 { 505 if (li->link >= SNDRV_MAX_LINKS) { 506 struct device *dev = simple_priv_to_dev(priv); 507 508 dev_err(dev, "too many links\n"); 509 return -EINVAL; 510 } 511 512 if (li->cpu) { 513 li->num[li->link].cpus = 1; 514 li->num[li->link].platforms = 1; 515 516 li->link++; /* CPU-dummy */ 517 } else { 518 li->num[li->link].codecs = 1; 519 520 li->link++; /* dummy-Codec */ 521 } 522 523 return 0; 524 } 525 526 static int simple_get_dais_count(struct asoc_simple_priv *priv, 527 struct link_info *li) 528 { 529 struct device *dev = simple_priv_to_dev(priv); 530 struct device_node *top = dev->of_node; 531 532 /* 533 * link_num : number of links. 534 * CPU-Codec / CPU-dummy / dummy-Codec 535 * dais_num : number of DAIs 536 * ccnf_num : number of codec_conf 537 * same number for "dummy-Codec" 538 * 539 * ex1) 540 * CPU0 --- Codec0 link : 5 541 * CPU1 --- Codec1 dais : 7 542 * CPU2 -/ ccnf : 1 543 * CPU3 --- Codec2 544 * 545 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 546 * => 7 DAIs = 4xCPU + 3xCodec 547 * => 1 ccnf = 1xdummy-Codec 548 * 549 * ex2) 550 * CPU0 --- Codec0 link : 5 551 * CPU1 --- Codec1 dais : 6 552 * CPU2 -/ ccnf : 1 553 * CPU3 -/ 554 * 555 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 556 * => 6 DAIs = 4xCPU + 2xCodec 557 * => 1 ccnf = 1xdummy-Codec 558 * 559 * ex3) 560 * CPU0 --- Codec0 link : 6 561 * CPU1 -/ dais : 6 562 * CPU2 --- Codec1 ccnf : 2 563 * CPU3 -/ 564 * 565 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 566 * => 6 DAIs = 4xCPU + 2xCodec 567 * => 2 ccnf = 2xdummy-Codec 568 * 569 * ex4) 570 * CPU0 --- Codec0 (convert-rate) link : 3 571 * CPU1 --- Codec1 dais : 4 572 * ccnf : 1 573 * 574 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 575 * => 4 DAIs = 2xCPU + 2xCodec 576 * => 1 ccnf = 1xdummy-Codec 577 */ 578 if (!top) { 579 li->num[0].cpus = 1; 580 li->num[0].codecs = 1; 581 li->num[0].platforms = 1; 582 583 li->link = 1; 584 return 0; 585 } 586 587 return simple_for_each_link(priv, li, 588 simple_count_noml, 589 simple_count_dpcm); 590 } 591 592 static int simple_soc_probe(struct snd_soc_card *card) 593 { 594 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card); 595 int ret; 596 597 ret = asoc_simple_init_hp(card, &priv->hp_jack, PREFIX); 598 if (ret < 0) 599 return ret; 600 601 ret = asoc_simple_init_mic(card, &priv->mic_jack, PREFIX); 602 if (ret < 0) 603 return ret; 604 605 return 0; 606 } 607 608 static int asoc_simple_probe(struct platform_device *pdev) 609 { 610 struct asoc_simple_priv *priv; 611 struct device *dev = &pdev->dev; 612 struct device_node *np = dev->of_node; 613 struct snd_soc_card *card; 614 struct link_info *li; 615 int ret; 616 617 /* Allocate the private data and the DAI link array */ 618 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 619 if (!priv) 620 return -ENOMEM; 621 622 card = simple_priv_to_card(priv); 623 card->owner = THIS_MODULE; 624 card->dev = dev; 625 card->probe = simple_soc_probe; 626 627 li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL); 628 if (!li) 629 return -ENOMEM; 630 631 ret = simple_get_dais_count(priv, li); 632 if (ret < 0) 633 return ret; 634 635 if (!li->link) 636 return -EINVAL; 637 638 ret = asoc_simple_init_priv(priv, li); 639 if (ret < 0) 640 return ret; 641 642 if (np && of_device_is_available(np)) { 643 644 ret = simple_parse_of(priv, li); 645 if (ret < 0) { 646 if (ret != -EPROBE_DEFER) 647 dev_err(dev, "parse error %d\n", ret); 648 goto err; 649 } 650 651 } else { 652 struct asoc_simple_card_info *cinfo; 653 struct snd_soc_dai_link_component *cpus; 654 struct snd_soc_dai_link_component *codecs; 655 struct snd_soc_dai_link_component *platform; 656 struct snd_soc_dai_link *dai_link = priv->dai_link; 657 struct simple_dai_props *dai_props = priv->dai_props; 658 659 cinfo = dev->platform_data; 660 if (!cinfo) { 661 dev_err(dev, "no info for asoc-simple-card\n"); 662 return -EINVAL; 663 } 664 665 if (!cinfo->name || 666 !cinfo->codec_dai.name || 667 !cinfo->codec || 668 !cinfo->platform || 669 !cinfo->cpu_dai.name) { 670 dev_err(dev, "insufficient asoc_simple_card_info settings\n"); 671 return -EINVAL; 672 } 673 674 cpus = dai_link->cpus; 675 cpus->dai_name = cinfo->cpu_dai.name; 676 677 codecs = dai_link->codecs; 678 codecs->name = cinfo->codec; 679 codecs->dai_name = cinfo->codec_dai.name; 680 681 platform = dai_link->platforms; 682 platform->name = cinfo->platform; 683 684 card->name = (cinfo->card) ? cinfo->card : cinfo->name; 685 dai_link->name = cinfo->name; 686 dai_link->stream_name = cinfo->name; 687 dai_link->dai_fmt = cinfo->daifmt; 688 dai_link->init = asoc_simple_dai_init; 689 memcpy(dai_props->cpu_dai, &cinfo->cpu_dai, 690 sizeof(*dai_props->cpu_dai)); 691 memcpy(dai_props->codec_dai, &cinfo->codec_dai, 692 sizeof(*dai_props->codec_dai)); 693 } 694 695 snd_soc_card_set_drvdata(card, priv); 696 697 asoc_simple_debug_info(priv); 698 699 ret = devm_snd_soc_register_card(dev, card); 700 if (ret < 0) 701 goto err; 702 703 devm_kfree(dev, li); 704 return 0; 705 err: 706 asoc_simple_clean_reference(card); 707 708 return ret; 709 } 710 711 static const struct of_device_id simple_of_match[] = { 712 { .compatible = "simple-audio-card", }, 713 { .compatible = "simple-scu-audio-card", 714 .data = (void *)DPCM_SELECTABLE }, 715 {}, 716 }; 717 MODULE_DEVICE_TABLE(of, simple_of_match); 718 719 static struct platform_driver asoc_simple_card = { 720 .driver = { 721 .name = "asoc-simple-card", 722 .pm = &snd_soc_pm_ops, 723 .of_match_table = simple_of_match, 724 }, 725 .probe = asoc_simple_probe, 726 .remove = asoc_simple_remove, 727 }; 728 729 module_platform_driver(asoc_simple_card); 730 731 MODULE_ALIAS("platform:asoc-simple-card"); 732 MODULE_LICENSE("GPL v2"); 733 MODULE_DESCRIPTION("ASoC Simple Sound Card"); 734 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 735