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audio-graph-card.c
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linux-6.19.14/sound/soc/generic/audio-graph-card.c
1// SPDX-License-Identifier: GPL-2.0 2// 3// ASoC audio graph sound card support 4// 5// Copyright (C) 2016 Renesas Solutions Corp. 6// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7// 8// based on ${LINUX}/sound/soc/generic/simple-card.c 9 10#include <linux/cleanup.h> 11#include <linux/clk.h> 12#include <linux/device.h> 13#include <linux/gpio/consumer.h> 14#include <linux/module.h> 15#include <linux/of.h> 16#include <linux/of_graph.h> 17#include <linux/platform_device.h> 18#include <linux/string.h> 19#include <sound/graph_card.h> 20 21#define DPCM_SELECTABLE 1 22 23#define graph_ret(priv, ret) _graph_ret(priv, __func__, ret) 24static inline int _graph_ret(struct simple_util_priv *priv, 25 const char *func, int ret) 26{ 27 return snd_soc_ret(simple_priv_to_dev(priv), ret, "at %s()\n", func); 28} 29 30#define ep_to_port(ep) of_get_parent(ep) 31static struct device_node *port_to_ports(struct device_node *port) 32{ 33 struct device_node *ports = of_get_parent(port); 34 35 if (!of_node_name_eq(ports, "ports")) { 36 of_node_put(ports); 37 return NULL; 38 } 39 return ports; 40} 41 42static int graph_outdrv_event(struct snd_soc_dapm_widget *w, 43 struct snd_kcontrol *kcontrol, 44 int event) 45{ 46 struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm); 47 struct simple_util_priv *priv = snd_soc_card_get_drvdata(card); 48 49 switch (event) { 50 case SND_SOC_DAPM_POST_PMU: 51 gpiod_set_value_cansleep(priv->pa_gpio, 1); 52 break; 53 case SND_SOC_DAPM_PRE_PMD: 54 gpiod_set_value_cansleep(priv->pa_gpio, 0); 55 break; 56 default: 57 return -EINVAL; 58 } 59 60 return 0; 61} 62 63static const struct snd_soc_dapm_widget graph_dapm_widgets[] = { 64 SND_SOC_DAPM_OUT_DRV_E("Amplifier", SND_SOC_NOPM, 65 0, 0, NULL, 0, graph_outdrv_event, 66 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 67}; 68 69static const struct snd_soc_ops graph_ops = { 70 .startup = simple_util_startup, 71 .shutdown = simple_util_shutdown, 72 .hw_params = simple_util_hw_params, 73}; 74 75static bool soc_component_is_pcm(struct snd_soc_dai_link_component *dlc) 76{ 77 struct snd_soc_dai *dai = snd_soc_find_dai_with_mutex(dlc); 78 79 if (dai && (dai->component->driver->pcm_construct || 80 (dai->driver->ops && dai->driver->ops->pcm_new))) 81 return true; 82 83 return false; 84} 85 86static void graph_parse_convert(struct device *dev, 87 struct device_node *ep, 88 struct simple_util_data *adata) 89{ 90 struct device_node *top = dev->of_node; 91 struct device_node *port __free(device_node) = ep_to_port(ep); 92 struct device_node *ports __free(device_node) = port_to_ports(port); 93 struct device_node *node __free(device_node) = of_graph_get_port_parent(ep); 94 95 simple_util_parse_convert(top, NULL, adata); 96 simple_util_parse_convert(ports, NULL, adata); 97 simple_util_parse_convert(port, NULL, adata); 98 simple_util_parse_convert(ep, NULL, adata); 99} 100 101static int graph_parse_node(struct simple_util_priv *priv, 102 struct device_node *ep, 103 struct link_info *li, 104 int *cpu) 105{ 106 struct device *dev = simple_priv_to_dev(priv); 107 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 108 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 109 struct snd_soc_dai_link_component *dlc; 110 struct simple_util_dai *dai; 111 int ret; 112 113 if (cpu) { 114 dlc = snd_soc_link_to_cpu(dai_link, 0); 115 dai = simple_props_to_dai_cpu(dai_props, 0); 116 } else { 117 dlc = snd_soc_link_to_codec(dai_link, 0); 118 dai = simple_props_to_dai_codec(dai_props, 0); 119 } 120 121 ret = graph_util_parse_dai(priv, ep, dlc, cpu); 122 if (ret < 0) 123 goto end; 124 125 ret = simple_util_parse_tdm(ep, dai); 126 if (ret < 0) 127 goto end; 128 129 ret = simple_util_parse_clk(dev, ep, dai, dlc); 130end: 131 return graph_ret(priv, ret); 132} 133 134static int graph_link_init(struct simple_util_priv *priv, 135 struct device_node *ep_cpu, 136 struct device_node *ep_codec, 137 struct link_info *li, 138 char *name) 139{ 140 struct device *dev = simple_priv_to_dev(priv); 141 struct device_node *top = dev->of_node; 142 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 143 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 144 struct device_node *port_cpu __free(device_node) = ep_to_port(ep_cpu); 145 struct device_node *port_codec __free(device_node) = ep_to_port(ep_codec); 146 struct device_node *ports_cpu __free(device_node) = port_to_ports(port_cpu); 147 struct device_node *ports_codec __free(device_node) = port_to_ports(port_codec); 148 enum snd_soc_trigger_order trigger_start = SND_SOC_TRIGGER_ORDER_DEFAULT; 149 enum snd_soc_trigger_order trigger_stop = SND_SOC_TRIGGER_ORDER_DEFAULT; 150 bool playback_only = 0, capture_only = 0; 151 int ret; 152 153 ret = simple_util_parse_daifmt(dev, ep_cpu, ep_codec, 154 NULL, &dai_link->dai_fmt); 155 if (ret < 0) 156 goto end; 157 158 graph_util_parse_link_direction(top, &playback_only, &capture_only); 159 graph_util_parse_link_direction(port_cpu, &playback_only, &capture_only); 160 graph_util_parse_link_direction(port_codec, &playback_only, &capture_only); 161 graph_util_parse_link_direction(ep_cpu, &playback_only, &capture_only); 162 graph_util_parse_link_direction(ep_codec, &playback_only, &capture_only); 163 164 of_property_read_u32(top, "mclk-fs", &dai_props->mclk_fs); 165 of_property_read_u32(ports_cpu, "mclk-fs", &dai_props->mclk_fs); 166 of_property_read_u32(ports_codec, "mclk-fs", &dai_props->mclk_fs); 167 of_property_read_u32(port_cpu, "mclk-fs", &dai_props->mclk_fs); 168 of_property_read_u32(port_codec, "mclk-fs", &dai_props->mclk_fs); 169 of_property_read_u32(ep_cpu, "mclk-fs", &dai_props->mclk_fs); 170 of_property_read_u32(ep_codec, "mclk-fs", &dai_props->mclk_fs); 171 172 graph_util_parse_trigger_order(priv, top, &trigger_start, &trigger_stop); 173 graph_util_parse_trigger_order(priv, ports_cpu, &trigger_start, &trigger_stop); 174 graph_util_parse_trigger_order(priv, ports_codec, &trigger_start, &trigger_stop); 175 graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop); 176 graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop); 177 graph_util_parse_trigger_order(priv, ep_cpu, &trigger_start, &trigger_stop); 178 graph_util_parse_trigger_order(priv, ep_codec, &trigger_start, &trigger_stop); 179 180 dai_link->playback_only = playback_only; 181 dai_link->capture_only = capture_only; 182 183 dai_link->trigger_start = trigger_start; 184 dai_link->trigger_stop = trigger_stop; 185 186 dai_link->init = simple_util_dai_init; 187 dai_link->ops = &graph_ops; 188 if (priv->ops) 189 dai_link->ops = priv->ops; 190 191 ret = simple_util_set_dailink_name(priv, dai_link, name); 192end: 193 return graph_ret(priv, ret); 194} 195 196static int graph_dai_link_of_dpcm(struct simple_util_priv *priv, 197 struct device_node *cpu_ep, 198 struct device_node *codec_ep, 199 struct link_info *li) 200{ 201 struct device *dev = simple_priv_to_dev(priv); 202 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 203 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 204 struct device_node *top = dev->of_node; 205 struct device_node *ep = li->cpu ? cpu_ep : codec_ep; 206 char dai_name[64]; 207 int ret; 208 209 dev_dbg(dev, "link_of DPCM (%pOF)\n", ep); 210 211 if (li->cpu) { 212 struct snd_soc_card *card = simple_priv_to_card(priv); 213 struct snd_soc_dai_link_component *cpus = snd_soc_link_to_cpu(dai_link, 0); 214 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, 0); 215 int is_single_links = 0; 216 217 /* Codec is dummy */ 218 219 /* FE settings */ 220 dai_link->dynamic = 1; 221 dai_link->dpcm_merged_format = 1; 222 223 ret = graph_parse_node(priv, cpu_ep, li, &is_single_links); 224 if (ret) 225 goto end; 226 227 snprintf(dai_name, sizeof(dai_name), 228 "fe.%pOFP.%s", cpus->of_node, cpus->dai_name); 229 /* 230 * In BE<->BE connections it is not required to create 231 * PCM devices at CPU end of the dai link and thus 'no_pcm' 232 * flag needs to be set. It is useful when there are many 233 * BE components and some of these have to be connected to 234 * form a valid audio path. 235 * 236 * For example: FE <-> BE1 <-> BE2 <-> ... <-> BEn where 237 * there are 'n' BE components in the path. 238 */ 239 if (card->component_chaining && !soc_component_is_pcm(cpus)) { 240 dai_link->no_pcm = 1; 241 dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup; 242 } 243 244 simple_util_canonicalize_cpu(cpus, is_single_links); 245 simple_util_canonicalize_platform(platforms, cpus); 246 } else { 247 struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, 0); 248 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, 0); 249 250 /* CPU is dummy */ 251 252 /* BE settings */ 253 dai_link->no_pcm = 1; 254 dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup; 255 256 ret = graph_parse_node(priv, codec_ep, li, NULL); 257 if (ret < 0) 258 goto end; 259 260 snprintf(dai_name, sizeof(dai_name), 261 "be.%pOFP.%s", codecs->of_node, codecs->dai_name); 262 263 /* check "prefix" from top node */ 264 struct device_node *port __free(device_node) = ep_to_port(ep); 265 struct device_node *ports __free(device_node) = port_to_ports(port); 266 267 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, "prefix"); 268 snd_soc_of_parse_node_prefix(ports, cconf, codecs->of_node, "prefix"); 269 snd_soc_of_parse_node_prefix(port, cconf, codecs->of_node, "prefix"); 270 } 271 272 graph_parse_convert(dev, ep, &dai_props->adata); 273 274 ret = graph_link_init(priv, cpu_ep, codec_ep, li, dai_name); 275 276 li->link++; 277end: 278 return graph_ret(priv, ret); 279} 280 281static int graph_dai_link_of(struct simple_util_priv *priv, 282 struct device_node *cpu_ep, 283 struct device_node *codec_ep, 284 struct link_info *li) 285{ 286 struct device *dev = simple_priv_to_dev(priv); 287 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 288 struct snd_soc_dai_link_component *cpus = snd_soc_link_to_cpu(dai_link, 0); 289 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, 0); 290 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, 0); 291 char dai_name[64]; 292 int ret, is_single_links = 0; 293 294 dev_dbg(dev, "link_of (%pOF)\n", cpu_ep); 295 296 ret = graph_parse_node(priv, cpu_ep, li, &is_single_links); 297 if (ret < 0) 298 goto end; 299 300 ret = graph_parse_node(priv, codec_ep, li, NULL); 301 if (ret < 0) 302 goto end; 303 304 snprintf(dai_name, sizeof(dai_name), 305 "%s-%s", cpus->dai_name, codecs->dai_name); 306 307 simple_util_canonicalize_cpu(cpus, is_single_links); 308 simple_util_canonicalize_platform(platforms, cpus); 309 310 ret = graph_link_init(priv, cpu_ep, codec_ep, li, dai_name); 311 if (ret < 0) 312 goto end; 313 314 li->link++; 315end: 316 return graph_ret(priv, ret); 317} 318 319static inline bool parse_as_dpcm_link(struct simple_util_priv *priv, 320 struct device_node *codec_port, 321 struct simple_util_data *adata) 322{ 323 if (priv->force_dpcm) 324 return true; 325 326 if (!priv->dpcm_selectable) 327 return false; 328 329 /* 330 * It is DPCM 331 * if Codec port has many endpoints, 332 * or has convert-xxx property 333 */ 334 if ((of_get_child_count(codec_port) > 1) || 335 simple_util_is_convert_required(adata)) 336 return true; 337 338 return false; 339} 340 341static int __graph_for_each_link(struct simple_util_priv *priv, 342 struct link_info *li, 343 int (*func_noml)(struct simple_util_priv *priv, 344 struct device_node *cpu_ep, 345 struct device_node *codec_ep, 346 struct link_info *li), 347 int (*func_dpcm)(struct simple_util_priv *priv, 348 struct device_node *cpu_ep, 349 struct device_node *codec_ep, 350 struct link_info *li)) 351{ 352 struct of_phandle_iterator it; 353 struct device *dev = simple_priv_to_dev(priv); 354 struct device_node *node = dev->of_node; 355 struct device_node *cpu_port; 356 struct device_node *codec_port_old = NULL; 357 struct simple_util_data adata; 358 int rc, ret = 0; 359 360 /* loop for all listed CPU port */ 361 of_for_each_phandle(&it, rc, node, "dais", NULL, 0) { 362 cpu_port = it.node; 363 364 /* loop for all CPU endpoint */ 365 for_each_of_graph_port_endpoint(cpu_port, cpu_ep) { 366 /* get codec */ 367 struct device_node *codec_ep __free(device_node) = of_graph_get_remote_endpoint(cpu_ep); 368 struct device_node *codec_port __free(device_node) = ep_to_port(codec_ep); 369 370 /* get convert-xxx property */ 371 memset(&adata, 0, sizeof(adata)); 372 graph_parse_convert(dev, codec_ep, &adata); 373 graph_parse_convert(dev, cpu_ep, &adata); 374 375 /* check if link requires DPCM parsing */ 376 if (parse_as_dpcm_link(priv, codec_port, &adata)) { 377 /* 378 * Codec endpoint can be NULL for pluggable audio HW. 379 * Platform DT can populate the Codec endpoint depending on the 380 * plugged HW. 381 */ 382 /* Do it all CPU endpoint, and 1st Codec endpoint */ 383 if (li->cpu || 384 ((codec_port_old != codec_port) && codec_ep)) 385 ret = func_dpcm(priv, cpu_ep, codec_ep, li); 386 /* else normal sound */ 387 } else { 388 if (li->cpu) 389 ret = func_noml(priv, cpu_ep, codec_ep, li); 390 } 391 392 if (ret < 0) 393 goto end; 394 395 codec_port_old = codec_port; 396 } 397 } 398end: 399 return graph_ret(priv, ret); 400} 401 402static int graph_for_each_link(struct simple_util_priv *priv, 403 struct link_info *li, 404 int (*func_noml)(struct simple_util_priv *priv, 405 struct device_node *cpu_ep, 406 struct device_node *codec_ep, 407 struct link_info *li), 408 int (*func_dpcm)(struct simple_util_priv *priv, 409 struct device_node *cpu_ep, 410 struct device_node *codec_ep, 411 struct link_info *li)) 412{ 413 int ret; 414 /* 415 * Detect all CPU first, and Detect all Codec 2nd. 416 * 417 * In Normal sound case, all DAIs are detected 418 * as "CPU-Codec". 419 * 420 * In DPCM sound case, 421 * all CPUs are detected as "CPU-dummy", and 422 * all Codecs are detected as "dummy-Codec". 423 * To avoid random sub-device numbering, 424 * detect "dummy-Codec" in last; 425 */ 426 for (li->cpu = 1; li->cpu >= 0; li->cpu--) { 427 ret = __graph_for_each_link(priv, li, func_noml, func_dpcm); 428 if (ret < 0) 429 break; 430 } 431 432 return graph_ret(priv, ret); 433} 434 435static int graph_count_noml(struct simple_util_priv *priv, 436 struct device_node *cpu_ep, 437 struct device_node *codec_ep, 438 struct link_info *li) 439{ 440 struct device *dev = simple_priv_to_dev(priv); 441 int ret = -EINVAL; 442 443 if (li->link >= SNDRV_MAX_LINKS) 444 goto end; 445 446 /* 447 * DON'T REMOVE platforms 448 * see 449 * simple-card.c :: simple_count_noml() 450 */ 451 li->num[li->link].cpus = 1; 452 li->num[li->link].platforms = 1; 453 454 li->num[li->link].codecs = 1; 455 456 li->link += 1; /* 1xCPU-Codec */ 457 458 dev_dbg(dev, "Count As Normal\n"); 459 ret = 0; 460end: 461 return graph_ret(priv, ret); 462} 463 464static int graph_count_dpcm(struct simple_util_priv *priv, 465 struct device_node *cpu_ep, 466 struct device_node *codec_ep, 467 struct link_info *li) 468{ 469 struct device *dev = simple_priv_to_dev(priv); 470 int ret = -EINVAL; 471 472 if (li->link >= SNDRV_MAX_LINKS) 473 goto end; 474 475 if (li->cpu) { 476 /* 477 * DON'T REMOVE platforms 478 * see 479 * simple-card.c :: simple_count_noml() 480 */ 481 li->num[li->link].cpus = 1; 482 li->num[li->link].platforms = 1; 483 484 li->link++; /* 1xCPU-dummy */ 485 } else { 486 li->num[li->link].codecs = 1; 487 488 li->link++; /* 1xdummy-Codec */ 489 } 490 491 dev_dbg(dev, "Count As DPCM\n"); 492 ret = 0; 493end: 494 return graph_ret(priv, ret); 495} 496 497static int graph_get_dais_count(struct simple_util_priv *priv, 498 struct link_info *li) 499{ 500 /* 501 * link_num : number of links. 502 * CPU-Codec / CPU-dummy / dummy-Codec 503 * dais_num : number of DAIs 504 * ccnf_num : number of codec_conf 505 * same number for "dummy-Codec" 506 * 507 * ex1) 508 * CPU0 --- Codec0 link : 5 509 * CPU1 --- Codec1 dais : 7 510 * CPU2 -/ ccnf : 1 511 * CPU3 --- Codec2 512 * 513 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 514 * => 7 DAIs = 4xCPU + 3xCodec 515 * => 1 ccnf = 1xdummy-Codec 516 * 517 * ex2) 518 * CPU0 --- Codec0 link : 5 519 * CPU1 --- Codec1 dais : 6 520 * CPU2 -/ ccnf : 1 521 * CPU3 -/ 522 * 523 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 524 * => 6 DAIs = 4xCPU + 2xCodec 525 * => 1 ccnf = 1xdummy-Codec 526 * 527 * ex3) 528 * CPU0 --- Codec0 link : 6 529 * CPU1 -/ dais : 6 530 * CPU2 --- Codec1 ccnf : 2 531 * CPU3 -/ 532 * 533 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 534 * => 6 DAIs = 4xCPU + 2xCodec 535 * => 2 ccnf = 2xdummy-Codec 536 * 537 * ex4) 538 * CPU0 --- Codec0 (convert-rate) link : 3 539 * CPU1 --- Codec1 dais : 4 540 * ccnf : 1 541 * 542 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 543 * => 4 DAIs = 2xCPU + 2xCodec 544 * => 1 ccnf = 1xdummy-Codec 545 */ 546 return graph_for_each_link(priv, li, 547 graph_count_noml, 548 graph_count_dpcm); 549} 550 551int audio_graph_parse_of(struct simple_util_priv *priv, struct device *dev) 552{ 553 struct snd_soc_card *card = simple_priv_to_card(priv); 554 int ret = -ENOMEM; 555 556 struct link_info *li __free(kfree) = kzalloc(sizeof(*li), GFP_KERNEL); 557 if (!li) 558 goto end; 559 560 card->owner = THIS_MODULE; 561 card->dev = dev; 562 563 ret = graph_get_dais_count(priv, li); 564 if (ret < 0) 565 goto end; 566 567 ret = -EINVAL; 568 if (!li->link) 569 goto end; 570 571 ret = simple_util_init_priv(priv, li); 572 if (ret < 0) 573 goto end; 574 575 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); 576 if (IS_ERR(priv->pa_gpio)) { 577 ret = PTR_ERR(priv->pa_gpio); 578 dev_err(dev, "failed to get amplifier gpio: %d\n", ret); 579 goto end; 580 } 581 582 ret = simple_util_parse_widgets(card, NULL); 583 if (ret < 0) 584 goto end; 585 586 ret = simple_util_parse_routing(card, NULL); 587 if (ret < 0) 588 goto end; 589 590 memset(li, 0, sizeof(*li)); 591 ret = graph_for_each_link(priv, li, 592 graph_dai_link_of, 593 graph_dai_link_of_dpcm); 594 if (ret < 0) 595 goto err; 596 597 ret = simple_util_parse_card_name(priv, NULL); 598 if (ret < 0) 599 goto err; 600 601 snd_soc_card_set_drvdata(card, priv); 602 603 simple_util_debug_info(priv); 604 605 ret = devm_snd_soc_register_card(dev, card); 606 if (ret < 0) 607 goto err; 608 609 return 0; 610err: 611 simple_util_clean_reference(card); 612end: 613 return dev_err_probe(dev, ret, "parse error\n"); 614} 615EXPORT_SYMBOL_GPL(audio_graph_parse_of); 616 617static int graph_probe(struct platform_device *pdev) 618{ 619 struct simple_util_priv *priv; 620 struct device *dev = &pdev->dev; 621 struct snd_soc_card *card; 622 623 /* Allocate the private data and the DAI link array */ 624 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 625 if (!priv) 626 return -ENOMEM; 627 628 card = simple_priv_to_card(priv); 629 card->dapm_widgets = graph_dapm_widgets; 630 card->num_dapm_widgets = ARRAY_SIZE(graph_dapm_widgets); 631 card->probe = graph_util_card_probe; 632 633 if (of_device_get_match_data(dev)) 634 priv->dpcm_selectable = 1; 635 636 return audio_graph_parse_of(priv, dev); 637} 638 639static const struct of_device_id graph_of_match[] = { 640 { .compatible = "audio-graph-card", }, 641 { .compatible = "audio-graph-scu-card", 642 .data = (void *)DPCM_SELECTABLE }, 643 {}, 644}; 645MODULE_DEVICE_TABLE(of, graph_of_match); 646 647static struct platform_driver graph_card = { 648 .driver = { 649 .name = "asoc-audio-graph-card", 650 .pm = &snd_soc_pm_ops, 651 .of_match_table = graph_of_match, 652 }, 653 .probe = graph_probe, 654 .remove = simple_util_remove, 655}; 656module_platform_driver(graph_card); 657 658MODULE_ALIAS("platform:asoc-audio-graph-card"); 659MODULE_LICENSE("GPL v2"); 660MODULE_DESCRIPTION("ASoC Audio Graph Sound Card"); 661MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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