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(dev, top, PREFIX, adata); 88 asoc_simple_parse_convert(dev, node, PREFIX, adata); 89 asoc_simple_parse_convert(dev, node, NULL, adata); 90 asoc_simple_parse_convert(dev, 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 = dai_link->cpus; 126 struct snd_soc_dai_link_component *codecs = dai_link->codecs; 127 struct device_node *top = dev->of_node; 128 struct device_node *node = of_get_parent(np); 129 char *prefix = ""; 130 int ret; 131 132 /* 133 * |CPU |Codec : turn 134 * CPU |Pass |return 135 * Codec |return|Pass 136 * np 137 */ 138 if (li->cpu == (np == codec)) 139 return 0; 140 141 dev_dbg(dev, "link_of DPCM (%pOF)\n", np); 142 143 li->link++; 144 145 /* For single DAI link & old style of DT node */ 146 if (is_top) 147 prefix = PREFIX; 148 149 if (li->cpu) { 150 int is_single_links = 0; 151 152 /* Codec is dummy */ 153 codecs->of_node = NULL; 154 codecs->dai_name = "snd-soc-dummy-dai"; 155 codecs->name = "snd-soc-dummy"; 156 157 /* FE settings */ 158 dai_link->dynamic = 1; 159 dai_link->dpcm_merged_format = 1; 160 161 dai = 162 dai_props->cpu_dai = &priv->dais[li->dais++]; 163 164 ret = asoc_simple_parse_cpu(np, dai_link, &is_single_links); 165 if (ret) 166 goto out_put_node; 167 168 ret = asoc_simple_parse_clk_cpu(dev, np, dai_link, dai); 169 if (ret < 0) 170 goto out_put_node; 171 172 ret = asoc_simple_set_dailink_name(dev, dai_link, 173 "fe.%s", 174 cpus->dai_name); 175 if (ret < 0) 176 goto out_put_node; 177 178 asoc_simple_canonicalize_cpu(dai_link, is_single_links); 179 } else { 180 struct snd_soc_codec_conf *cconf; 181 182 /* CPU is dummy */ 183 cpus->of_node = NULL; 184 cpus->dai_name = "snd-soc-dummy-dai"; 185 cpus->name = "snd-soc-dummy"; 186 187 /* BE settings */ 188 dai_link->no_pcm = 1; 189 dai_link->be_hw_params_fixup = asoc_simple_be_hw_params_fixup; 190 191 dai = 192 dai_props->codec_dai = &priv->dais[li->dais++]; 193 194 cconf = 195 dai_props->codec_conf = &priv->codec_conf[li->conf++]; 196 197 ret = asoc_simple_parse_codec(np, dai_link); 198 if (ret < 0) 199 goto out_put_node; 200 201 ret = asoc_simple_parse_clk_codec(dev, np, dai_link, dai); 202 if (ret < 0) 203 goto out_put_node; 204 205 ret = asoc_simple_set_dailink_name(dev, dai_link, 206 "be.%s", 207 codecs->dai_name); 208 if (ret < 0) 209 goto out_put_node; 210 211 /* check "prefix" from top node */ 212 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 213 PREFIX "prefix"); 214 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 215 "prefix"); 216 snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node, 217 "prefix"); 218 } 219 220 simple_parse_convert(dev, np, &dai_props->adata); 221 simple_parse_mclk_fs(top, np, codec, dai_props, prefix); 222 223 asoc_simple_canonicalize_platform(dai_link); 224 225 ret = asoc_simple_parse_tdm(np, dai); 226 if (ret) 227 goto out_put_node; 228 229 ret = asoc_simple_parse_daifmt(dev, node, codec, 230 prefix, &dai_link->dai_fmt); 231 if (ret < 0) 232 goto out_put_node; 233 234 dai_link->dpcm_playback = 1; 235 dai_link->dpcm_capture = 1; 236 dai_link->ops = &simple_ops; 237 dai_link->init = asoc_simple_dai_init; 238 239 out_put_node: 240 of_node_put(node); 241 return ret; 242 } 243 244 static int simple_dai_link_of(struct asoc_simple_priv *priv, 245 struct device_node *np, 246 struct device_node *codec, 247 struct link_info *li, 248 bool is_top) 249 { 250 struct device *dev = simple_priv_to_dev(priv); 251 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 252 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 253 struct asoc_simple_dai *cpu_dai; 254 struct asoc_simple_dai *codec_dai; 255 struct device_node *top = dev->of_node; 256 struct device_node *cpu = NULL; 257 struct device_node *node = NULL; 258 struct device_node *plat = NULL; 259 char prop[128]; 260 char *prefix = ""; 261 int ret, single_cpu; 262 263 /* 264 * |CPU |Codec : turn 265 * CPU |Pass |return 266 * Codec |return|return 267 * np 268 */ 269 if (!li->cpu || np == codec) 270 return 0; 271 272 cpu = np; 273 node = of_get_parent(np); 274 li->link++; 275 276 dev_dbg(dev, "link_of (%pOF)\n", node); 277 278 /* For single DAI link & old style of DT node */ 279 if (is_top) 280 prefix = PREFIX; 281 282 snprintf(prop, sizeof(prop), "%splat", prefix); 283 plat = of_get_child_by_name(node, prop); 284 285 cpu_dai = 286 dai_props->cpu_dai = &priv->dais[li->dais++]; 287 codec_dai = 288 dai_props->codec_dai = &priv->dais[li->dais++]; 289 290 ret = asoc_simple_parse_daifmt(dev, node, codec, 291 prefix, &dai_link->dai_fmt); 292 if (ret < 0) 293 goto dai_link_of_err; 294 295 simple_parse_mclk_fs(top, cpu, codec, dai_props, prefix); 296 297 ret = asoc_simple_parse_cpu(cpu, dai_link, &single_cpu); 298 if (ret < 0) 299 goto dai_link_of_err; 300 301 ret = asoc_simple_parse_codec(codec, dai_link); 302 if (ret < 0) 303 goto dai_link_of_err; 304 305 ret = asoc_simple_parse_platform(plat, dai_link); 306 if (ret < 0) 307 goto dai_link_of_err; 308 309 ret = asoc_simple_parse_tdm(cpu, cpu_dai); 310 if (ret < 0) 311 goto dai_link_of_err; 312 313 ret = asoc_simple_parse_tdm(codec, codec_dai); 314 if (ret < 0) 315 goto dai_link_of_err; 316 317 ret = asoc_simple_parse_clk_cpu(dev, cpu, dai_link, cpu_dai); 318 if (ret < 0) 319 goto dai_link_of_err; 320 321 ret = asoc_simple_parse_clk_codec(dev, codec, dai_link, codec_dai); 322 if (ret < 0) 323 goto dai_link_of_err; 324 325 ret = asoc_simple_set_dailink_name(dev, dai_link, 326 "%s-%s", 327 dai_link->cpus->dai_name, 328 dai_link->codecs->dai_name); 329 if (ret < 0) 330 goto dai_link_of_err; 331 332 dai_link->ops = &simple_ops; 333 dai_link->init = asoc_simple_dai_init; 334 335 asoc_simple_canonicalize_cpu(dai_link, single_cpu); 336 asoc_simple_canonicalize_platform(dai_link); 337 338 dai_link_of_err: 339 of_node_put(plat); 340 of_node_put(node); 341 342 return ret; 343 } 344 345 static int simple_for_each_link(struct asoc_simple_priv *priv, 346 struct link_info *li, 347 int (*func_noml)(struct asoc_simple_priv *priv, 348 struct device_node *np, 349 struct device_node *codec, 350 struct link_info *li, bool is_top), 351 int (*func_dpcm)(struct asoc_simple_priv *priv, 352 struct device_node *np, 353 struct device_node *codec, 354 struct link_info *li, bool is_top)) 355 { 356 struct device *dev = simple_priv_to_dev(priv); 357 struct device_node *top = dev->of_node; 358 struct device_node *node; 359 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev); 360 bool is_top = 0; 361 int ret = 0; 362 363 /* Check if it has dai-link */ 364 node = of_get_child_by_name(top, PREFIX "dai-link"); 365 if (!node) { 366 node = of_node_get(top); 367 is_top = 1; 368 } 369 370 /* loop for all dai-link */ 371 do { 372 struct asoc_simple_data adata; 373 struct device_node *codec; 374 struct device_node *plat; 375 struct device_node *np; 376 int num = of_get_child_count(node); 377 378 /* get codec */ 379 codec = of_get_child_by_name(node, is_top ? 380 PREFIX "codec" : "codec"); 381 if (!codec) { 382 ret = -ENODEV; 383 goto error; 384 } 385 /* get platform */ 386 plat = of_get_child_by_name(node, is_top ? 387 PREFIX "plat" : "plat"); 388 389 /* get convert-xxx property */ 390 memset(&adata, 0, sizeof(adata)); 391 for_each_child_of_node(node, np) 392 simple_parse_convert(dev, np, &adata); 393 394 /* loop for all CPU/Codec node */ 395 for_each_child_of_node(node, np) { 396 if (plat == np) 397 continue; 398 /* 399 * It is DPCM 400 * if it has many CPUs, 401 * or has convert-xxx property 402 */ 403 if (dpcm_selectable && 404 (num > 2 || 405 adata.convert_rate || adata.convert_channels)) 406 ret = func_dpcm(priv, np, codec, li, is_top); 407 /* else normal sound */ 408 else 409 ret = func_noml(priv, np, codec, li, is_top); 410 411 if (ret < 0) { 412 of_node_put(codec); 413 of_node_put(np); 414 goto error; 415 } 416 } 417 418 of_node_put(codec); 419 node = of_get_next_child(top, node); 420 } while (!is_top && node); 421 422 error: 423 of_node_put(node); 424 return ret; 425 } 426 427 static int simple_parse_aux_devs(struct device_node *node, 428 struct asoc_simple_priv *priv) 429 { 430 struct device *dev = simple_priv_to_dev(priv); 431 struct device_node *aux_node; 432 struct snd_soc_card *card = simple_priv_to_card(priv); 433 int i, n, len; 434 435 if (!of_find_property(node, PREFIX "aux-devs", &len)) 436 return 0; /* Ok to have no aux-devs */ 437 438 n = len / sizeof(__be32); 439 if (n <= 0) 440 return -EINVAL; 441 442 card->aux_dev = devm_kcalloc(dev, 443 n, sizeof(*card->aux_dev), GFP_KERNEL); 444 if (!card->aux_dev) 445 return -ENOMEM; 446 447 for (i = 0; i < n; i++) { 448 aux_node = of_parse_phandle(node, PREFIX "aux-devs", i); 449 if (!aux_node) 450 return -EINVAL; 451 card->aux_dev[i].dlc.of_node = aux_node; 452 } 453 454 card->num_aux_devs = n; 455 return 0; 456 } 457 458 static int simple_parse_of(struct asoc_simple_priv *priv) 459 { 460 struct device *dev = simple_priv_to_dev(priv); 461 struct device_node *top = dev->of_node; 462 struct snd_soc_card *card = simple_priv_to_card(priv); 463 struct link_info li; 464 int ret; 465 466 if (!top) 467 return -EINVAL; 468 469 ret = asoc_simple_parse_widgets(card, PREFIX); 470 if (ret < 0) 471 return ret; 472 473 ret = asoc_simple_parse_routing(card, PREFIX); 474 if (ret < 0) 475 return ret; 476 477 ret = asoc_simple_parse_pin_switches(card, PREFIX); 478 if (ret < 0) 479 return ret; 480 481 /* Single/Muti DAI link(s) & New style of DT node */ 482 memset(&li, 0, sizeof(li)); 483 for (li.cpu = 1; li.cpu >= 0; li.cpu--) { 484 /* 485 * Detect all CPU first, and Detect all Codec 2nd. 486 * 487 * In Normal sound case, all DAIs are detected 488 * as "CPU-Codec". 489 * 490 * In DPCM sound case, 491 * all CPUs are detected as "CPU-dummy", and 492 * all Codecs are detected as "dummy-Codec". 493 * To avoid random sub-device numbering, 494 * detect "dummy-Codec" in last; 495 */ 496 ret = simple_for_each_link(priv, &li, 497 simple_dai_link_of, 498 simple_dai_link_of_dpcm); 499 if (ret < 0) 500 return ret; 501 } 502 503 ret = asoc_simple_parse_card_name(card, PREFIX); 504 if (ret < 0) 505 return ret; 506 507 ret = simple_parse_aux_devs(top, priv); 508 509 return ret; 510 } 511 512 static int simple_count_noml(struct asoc_simple_priv *priv, 513 struct device_node *np, 514 struct device_node *codec, 515 struct link_info *li, bool is_top) 516 { 517 li->dais++; /* CPU or Codec */ 518 if (np != codec) 519 li->link++; /* CPU-Codec */ 520 521 return 0; 522 } 523 524 static int simple_count_dpcm(struct asoc_simple_priv *priv, 525 struct device_node *np, 526 struct device_node *codec, 527 struct link_info *li, bool is_top) 528 { 529 li->dais++; /* CPU or Codec */ 530 li->link++; /* CPU-dummy or dummy-Codec */ 531 if (np == codec) 532 li->conf++; 533 534 return 0; 535 } 536 537 static void simple_get_dais_count(struct asoc_simple_priv *priv, 538 struct link_info *li) 539 { 540 struct device *dev = simple_priv_to_dev(priv); 541 struct device_node *top = dev->of_node; 542 543 /* 544 * link_num : number of links. 545 * CPU-Codec / CPU-dummy / dummy-Codec 546 * dais_num : number of DAIs 547 * ccnf_num : number of codec_conf 548 * same number for "dummy-Codec" 549 * 550 * ex1) 551 * CPU0 --- Codec0 link : 5 552 * CPU1 --- Codec1 dais : 7 553 * CPU2 -/ ccnf : 1 554 * CPU3 --- Codec2 555 * 556 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 557 * => 7 DAIs = 4xCPU + 3xCodec 558 * => 1 ccnf = 1xdummy-Codec 559 * 560 * ex2) 561 * CPU0 --- Codec0 link : 5 562 * CPU1 --- Codec1 dais : 6 563 * CPU2 -/ ccnf : 1 564 * CPU3 -/ 565 * 566 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 567 * => 6 DAIs = 4xCPU + 2xCodec 568 * => 1 ccnf = 1xdummy-Codec 569 * 570 * ex3) 571 * CPU0 --- Codec0 link : 6 572 * CPU1 -/ dais : 6 573 * CPU2 --- Codec1 ccnf : 2 574 * CPU3 -/ 575 * 576 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 577 * => 6 DAIs = 4xCPU + 2xCodec 578 * => 2 ccnf = 2xdummy-Codec 579 * 580 * ex4) 581 * CPU0 --- Codec0 (convert-rate) link : 3 582 * CPU1 --- Codec1 dais : 4 583 * ccnf : 1 584 * 585 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 586 * => 4 DAIs = 2xCPU + 2xCodec 587 * => 1 ccnf = 1xdummy-Codec 588 */ 589 if (!top) { 590 li->link = 1; 591 li->dais = 2; 592 li->conf = 0; 593 return; 594 } 595 596 simple_for_each_link(priv, li, 597 simple_count_noml, 598 simple_count_dpcm); 599 600 dev_dbg(dev, "link %d, dais %d, ccnf %d\n", 601 li->link, li->dais, li->conf); 602 } 603 604 static int simple_soc_probe(struct snd_soc_card *card) 605 { 606 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card); 607 int ret; 608 609 ret = asoc_simple_init_hp(card, &priv->hp_jack, PREFIX); 610 if (ret < 0) 611 return ret; 612 613 ret = asoc_simple_init_mic(card, &priv->mic_jack, PREFIX); 614 if (ret < 0) 615 return ret; 616 617 return 0; 618 } 619 620 static int asoc_simple_probe(struct platform_device *pdev) 621 { 622 struct asoc_simple_priv *priv; 623 struct device *dev = &pdev->dev; 624 struct device_node *np = dev->of_node; 625 struct snd_soc_card *card; 626 struct link_info li; 627 int ret; 628 629 /* Allocate the private data and the DAI link array */ 630 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 631 if (!priv) 632 return -ENOMEM; 633 634 card = simple_priv_to_card(priv); 635 card->owner = THIS_MODULE; 636 card->dev = dev; 637 card->probe = simple_soc_probe; 638 639 memset(&li, 0, sizeof(li)); 640 simple_get_dais_count(priv, &li); 641 if (!li.link || !li.dais) 642 return -EINVAL; 643 644 ret = asoc_simple_init_priv(priv, &li); 645 if (ret < 0) 646 return ret; 647 648 if (np && of_device_is_available(np)) { 649 650 ret = simple_parse_of(priv); 651 if (ret < 0) { 652 if (ret != -EPROBE_DEFER) 653 dev_err(dev, "parse error %d\n", ret); 654 goto err; 655 } 656 657 } else { 658 struct asoc_simple_card_info *cinfo; 659 struct snd_soc_dai_link_component *cpus; 660 struct snd_soc_dai_link_component *codecs; 661 struct snd_soc_dai_link_component *platform; 662 struct snd_soc_dai_link *dai_link = priv->dai_link; 663 struct simple_dai_props *dai_props = priv->dai_props; 664 665 int dai_idx = 0; 666 667 cinfo = dev->platform_data; 668 if (!cinfo) { 669 dev_err(dev, "no info for asoc-simple-card\n"); 670 return -EINVAL; 671 } 672 673 if (!cinfo->name || 674 !cinfo->codec_dai.name || 675 !cinfo->codec || 676 !cinfo->platform || 677 !cinfo->cpu_dai.name) { 678 dev_err(dev, "insufficient asoc_simple_card_info settings\n"); 679 return -EINVAL; 680 } 681 682 dai_props->cpu_dai = &priv->dais[dai_idx++]; 683 dai_props->codec_dai = &priv->dais[dai_idx++]; 684 685 cpus = dai_link->cpus; 686 cpus->dai_name = cinfo->cpu_dai.name; 687 688 codecs = dai_link->codecs; 689 codecs->name = cinfo->codec; 690 codecs->dai_name = cinfo->codec_dai.name; 691 692 platform = dai_link->platforms; 693 platform->name = cinfo->platform; 694 695 card->name = (cinfo->card) ? cinfo->card : cinfo->name; 696 dai_link->name = cinfo->name; 697 dai_link->stream_name = cinfo->name; 698 dai_link->dai_fmt = cinfo->daifmt; 699 dai_link->init = asoc_simple_dai_init; 700 memcpy(dai_props->cpu_dai, &cinfo->cpu_dai, 701 sizeof(*dai_props->cpu_dai)); 702 memcpy(dai_props->codec_dai, &cinfo->codec_dai, 703 sizeof(*dai_props->codec_dai)); 704 } 705 706 snd_soc_card_set_drvdata(card, priv); 707 708 asoc_simple_debug_info(priv); 709 710 ret = devm_snd_soc_register_card(dev, card); 711 if (ret < 0) 712 goto err; 713 714 return 0; 715 err: 716 asoc_simple_clean_reference(card); 717 718 return ret; 719 } 720 721 static int asoc_simple_remove(struct platform_device *pdev) 722 { 723 struct snd_soc_card *card = platform_get_drvdata(pdev); 724 725 return asoc_simple_clean_reference(card); 726 } 727 728 static const struct of_device_id simple_of_match[] = { 729 { .compatible = "simple-audio-card", }, 730 { .compatible = "simple-scu-audio-card", 731 .data = (void *)DPCM_SELECTABLE }, 732 {}, 733 }; 734 MODULE_DEVICE_TABLE(of, simple_of_match); 735 736 static struct platform_driver asoc_simple_card = { 737 .driver = { 738 .name = "asoc-simple-card", 739 .pm = &snd_soc_pm_ops, 740 .of_match_table = simple_of_match, 741 }, 742 .probe = asoc_simple_probe, 743 .remove = asoc_simple_remove, 744 }; 745 746 module_platform_driver(asoc_simple_card); 747 748 MODULE_ALIAS("platform:asoc-simple-card"); 749 MODULE_LICENSE("GPL v2"); 750 MODULE_DESCRIPTION("ASoC Simple Sound Card"); 751 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 752