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/cleanup.h> 9 #include <linux/clk.h> 10 #include <linux/device.h> 11 #include <linux/module.h> 12 #include <linux/of.h> 13 #include <linux/of_platform.h> 14 #include <linux/platform_device.h> 15 #include <linux/string.h> 16 #include <sound/simple_card.h> 17 #include <sound/soc-dai.h> 18 #include <sound/soc.h> 19 20 #define DPCM_SELECTABLE 1 21 22 #define DAI "sound-dai" 23 #define CELL "#sound-dai-cells" 24 #define PREFIX "simple-audio-card," 25 26 static const struct snd_soc_ops simple_ops = { 27 .startup = simple_util_startup, 28 .shutdown = simple_util_shutdown, 29 .hw_params = simple_util_hw_params, 30 }; 31 32 static int simple_parse_platform(struct device_node *node, struct snd_soc_dai_link_component *dlc) 33 { 34 struct of_phandle_args args; 35 int ret; 36 37 if (!node) 38 return 0; 39 40 /* 41 * Get node via "sound-dai = <&phandle port>" 42 * it will be used as xxx_of_node on soc_bind_dai_link() 43 */ 44 ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args); 45 if (ret) 46 return ret; 47 48 /* dai_name is not required and may not exist for plat component */ 49 50 dlc->of_node = args.np; 51 52 return 0; 53 } 54 55 static int simple_parse_dai(struct device *dev, 56 struct device_node *node, 57 struct snd_soc_dai_link_component *dlc, 58 int *is_single_link) 59 { 60 struct of_phandle_args args; 61 struct snd_soc_dai *dai; 62 int ret; 63 64 if (!node) 65 return 0; 66 67 /* 68 * Get node via "sound-dai = <&phandle port>" 69 * it will be used as xxx_of_node on soc_bind_dai_link() 70 */ 71 ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args); 72 if (ret) 73 return ret; 74 75 /* 76 * Try to find from DAI args 77 */ 78 dai = snd_soc_get_dai_via_args(&args); 79 if (dai) { 80 dlc->dai_name = snd_soc_dai_name_get(dai); 81 dlc->dai_args = snd_soc_copy_dai_args(dev, &args); 82 if (!dlc->dai_args) 83 return -ENOMEM; 84 85 goto parse_dai_end; 86 } 87 88 /* 89 * FIXME 90 * 91 * Here, dlc->dai_name is pointer to CPU/Codec DAI name. 92 * If user unbinded CPU or Codec driver, but not for Sound Card, 93 * dlc->dai_name is keeping unbinded CPU or Codec 94 * driver's pointer. 95 * 96 * If user re-bind CPU or Codec driver again, ALSA SoC will try 97 * to rebind Card via snd_soc_try_rebind_card(), but because of 98 * above reason, it might can't bind Sound Card. 99 * Because Sound Card is pointing to released dai_name pointer. 100 * 101 * To avoid this rebind Card issue, 102 * 1) It needs to alloc memory to keep dai_name eventhough 103 * CPU or Codec driver was unbinded, or 104 * 2) user need to rebind Sound Card everytime 105 * if he unbinded CPU or Codec. 106 */ 107 ret = snd_soc_get_dlc(&args, dlc); 108 if (ret < 0) 109 return ret; 110 111 parse_dai_end: 112 if (is_single_link) 113 *is_single_link = !args.args_count; 114 115 return 0; 116 } 117 118 static void simple_parse_convert(struct device *dev, 119 struct device_node *np, 120 struct simple_util_data *adata) 121 { 122 struct device_node *top = dev->of_node; 123 struct device_node *node __free(device_node) = of_get_parent(np); 124 125 simple_util_parse_convert(top, PREFIX, adata); 126 simple_util_parse_convert(node, PREFIX, adata); 127 simple_util_parse_convert(node, NULL, adata); 128 simple_util_parse_convert(np, NULL, adata); 129 } 130 131 static int simple_parse_node(struct simple_util_priv *priv, 132 struct device_node *np, 133 struct link_info *li, 134 char *prefix, 135 int *cpu) 136 { 137 struct device *dev = simple_priv_to_dev(priv); 138 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 139 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 140 struct snd_soc_dai_link_component *dlc; 141 struct simple_util_dai *dai; 142 int ret; 143 144 if (cpu) { 145 dlc = snd_soc_link_to_cpu(dai_link, 0); 146 dai = simple_props_to_dai_cpu(dai_props, 0); 147 } else { 148 dlc = snd_soc_link_to_codec(dai_link, 0); 149 dai = simple_props_to_dai_codec(dai_props, 0); 150 } 151 152 ret = simple_parse_dai(dev, np, dlc, cpu); 153 if (ret) 154 return ret; 155 156 ret = simple_util_parse_clk(dev, np, dai, dlc); 157 if (ret) 158 return ret; 159 160 ret = simple_util_parse_tdm(np, dai); 161 if (ret) 162 return ret; 163 164 return 0; 165 } 166 167 static int simple_link_init(struct simple_util_priv *priv, 168 struct device_node *cpu, 169 struct device_node *codec, 170 struct link_info *li, 171 char *prefix, char *name) 172 { 173 struct device *dev = simple_priv_to_dev(priv); 174 struct device_node *top = dev->of_node; 175 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 176 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 177 struct device_node *node __free(device_node) = of_get_parent(cpu); 178 enum snd_soc_trigger_order trigger_start = SND_SOC_TRIGGER_ORDER_DEFAULT; 179 enum snd_soc_trigger_order trigger_stop = SND_SOC_TRIGGER_ORDER_DEFAULT; 180 bool playback_only = 0, capture_only = 0; 181 int ret; 182 183 ret = simple_util_parse_daifmt(dev, node, codec, 184 prefix, &dai_link->dai_fmt); 185 if (ret < 0) 186 return ret; 187 188 graph_util_parse_link_direction(top, &playback_only, &capture_only); 189 graph_util_parse_link_direction(node, &playback_only, &capture_only); 190 graph_util_parse_link_direction(cpu, &playback_only, &capture_only); 191 graph_util_parse_link_direction(codec, &playback_only, &capture_only); 192 193 of_property_read_u32(top, "mclk-fs", &dai_props->mclk_fs); 194 of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); 195 of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs); 196 of_property_read_u32(node, PREFIX "mclk-fs", &dai_props->mclk_fs); 197 of_property_read_u32(cpu, "mclk-fs", &dai_props->mclk_fs); 198 of_property_read_u32(cpu, PREFIX "mclk-fs", &dai_props->mclk_fs); 199 of_property_read_u32(codec, "mclk-fs", &dai_props->mclk_fs); 200 of_property_read_u32(codec, PREFIX "mclk-fs", &dai_props->mclk_fs); 201 202 graph_util_parse_trigger_order(priv, top, &trigger_start, &trigger_stop); 203 graph_util_parse_trigger_order(priv, node, &trigger_start, &trigger_stop); 204 graph_util_parse_trigger_order(priv, cpu, &trigger_start, &trigger_stop); 205 graph_util_parse_trigger_order(priv, codec, &trigger_start, &trigger_stop); 206 207 dai_link->playback_only = playback_only; 208 dai_link->capture_only = capture_only; 209 210 dai_link->trigger_start = trigger_start; 211 dai_link->trigger_stop = trigger_stop; 212 213 dai_link->init = simple_util_dai_init; 214 dai_link->ops = &simple_ops; 215 216 return simple_util_set_dailink_name(dev, dai_link, name); 217 } 218 219 static int simple_dai_link_of_dpcm(struct simple_util_priv *priv, 220 struct device_node *np, 221 struct device_node *codec, 222 struct link_info *li, 223 bool is_top) 224 { 225 struct device *dev = simple_priv_to_dev(priv); 226 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 227 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 228 struct device_node *top = dev->of_node; 229 struct device_node *node __free(device_node) = of_get_parent(np); 230 char *prefix = ""; 231 char dai_name[64]; 232 int ret; 233 234 dev_dbg(dev, "link_of DPCM (%pOF)\n", np); 235 236 /* For single DAI link & old style of DT node */ 237 if (is_top) 238 prefix = PREFIX; 239 240 if (li->cpu) { 241 struct snd_soc_dai_link_component *cpus = snd_soc_link_to_cpu(dai_link, 0); 242 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, 0); 243 int is_single_links = 0; 244 245 /* Codec is dummy */ 246 247 /* FE settings */ 248 dai_link->dynamic = 1; 249 dai_link->dpcm_merged_format = 1; 250 251 ret = simple_parse_node(priv, np, li, prefix, &is_single_links); 252 if (ret < 0) 253 goto out_put_node; 254 255 snprintf(dai_name, sizeof(dai_name), "fe.%s", cpus->dai_name); 256 257 simple_util_canonicalize_cpu(cpus, is_single_links); 258 simple_util_canonicalize_platform(platforms, cpus); 259 } else { 260 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, 0); 261 struct snd_soc_codec_conf *cconf; 262 263 /* CPU is dummy */ 264 265 /* BE settings */ 266 dai_link->no_pcm = 1; 267 dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup; 268 269 cconf = simple_props_to_codec_conf(dai_props, 0); 270 271 ret = simple_parse_node(priv, np, li, prefix, NULL); 272 if (ret < 0) 273 goto out_put_node; 274 275 snprintf(dai_name, sizeof(dai_name), "be.%s", codecs->dai_name); 276 277 /* check "prefix" from top node */ 278 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 279 PREFIX "prefix"); 280 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 281 "prefix"); 282 snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node, 283 "prefix"); 284 } 285 286 simple_parse_convert(dev, np, &dai_props->adata); 287 288 ret = simple_link_init(priv, np, codec, li, prefix, dai_name); 289 290 out_put_node: 291 li->link++; 292 293 return ret; 294 } 295 296 static int simple_dai_link_of(struct simple_util_priv *priv, 297 struct device_node *np, 298 struct device_node *codec, 299 struct link_info *li, 300 bool is_top) 301 { 302 struct device *dev = simple_priv_to_dev(priv); 303 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 304 struct snd_soc_dai_link_component *cpus = snd_soc_link_to_cpu(dai_link, 0); 305 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, 0); 306 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, 0); 307 struct device_node *cpu = NULL; 308 char dai_name[64]; 309 char prop[128]; 310 char *prefix = ""; 311 int ret, single_cpu = 0; 312 313 cpu = np; 314 struct device_node *node __free(device_node) = of_get_parent(np); 315 316 dev_dbg(dev, "link_of (%pOF)\n", node); 317 318 /* For single DAI link & old style of DT node */ 319 if (is_top) 320 prefix = PREFIX; 321 322 snprintf(prop, sizeof(prop), "%splat", prefix); 323 struct device_node *plat __free(device_node) = of_get_child_by_name(node, prop); 324 325 ret = simple_parse_node(priv, cpu, li, prefix, &single_cpu); 326 if (ret < 0) 327 goto dai_link_of_err; 328 329 ret = simple_parse_node(priv, codec, li, prefix, NULL); 330 if (ret < 0) 331 goto dai_link_of_err; 332 333 ret = simple_parse_platform(plat, platforms); 334 if (ret < 0) 335 goto dai_link_of_err; 336 337 snprintf(dai_name, sizeof(dai_name), 338 "%s-%s", cpus->dai_name, codecs->dai_name); 339 340 simple_util_canonicalize_cpu(cpus, single_cpu); 341 simple_util_canonicalize_platform(platforms, cpus); 342 343 ret = simple_link_init(priv, cpu, codec, li, prefix, dai_name); 344 345 dai_link_of_err: 346 li->link++; 347 348 return ret; 349 } 350 351 static int __simple_for_each_link(struct simple_util_priv *priv, 352 struct link_info *li, 353 int (*func_noml)(struct simple_util_priv *priv, 354 struct device_node *np, 355 struct device_node *codec, 356 struct link_info *li, bool is_top), 357 int (*func_dpcm)(struct simple_util_priv *priv, 358 struct device_node *np, 359 struct device_node *codec, 360 struct link_info *li, bool is_top)) 361 { 362 struct device *dev = simple_priv_to_dev(priv); 363 struct device_node *top = dev->of_node; 364 struct device_node *node; 365 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev); 366 bool is_top = 0; 367 int ret = 0; 368 369 /* Check if it has dai-link */ 370 node = of_get_child_by_name(top, PREFIX "dai-link"); 371 if (!node) { 372 node = of_node_get(top); 373 is_top = 1; 374 } 375 376 struct device_node *add_devs __free(device_node) = of_get_child_by_name(top, PREFIX "additional-devs"); 377 378 /* loop for all dai-link */ 379 do { 380 struct simple_util_data adata; 381 int num = of_get_child_count(node); 382 383 /* Skip additional-devs node */ 384 if (node == add_devs) { 385 node = of_get_next_child(top, node); 386 continue; 387 } 388 389 /* get codec */ 390 struct device_node *codec __free(device_node) = 391 of_get_child_by_name(node, is_top ? PREFIX "codec" : "codec"); 392 if (!codec) { 393 ret = -ENODEV; 394 goto error; 395 } 396 /* get platform */ 397 struct device_node *plat __free(device_node) = 398 of_get_child_by_name(node, is_top ? PREFIX "plat" : "plat"); 399 400 /* get convert-xxx property */ 401 memset(&adata, 0, sizeof(adata)); 402 for_each_child_of_node_scoped(node, np) { 403 if (np == add_devs) 404 continue; 405 simple_parse_convert(dev, np, &adata); 406 } 407 408 /* loop for all CPU/Codec node */ 409 for_each_child_of_node_scoped(node, np) { 410 if (plat == np || add_devs == np) 411 continue; 412 /* 413 * It is DPCM 414 * if it has many CPUs, 415 * or has convert-xxx property 416 */ 417 if (dpcm_selectable && 418 (num > 2 || simple_util_is_convert_required(&adata))) { 419 /* 420 * np 421 * |1(CPU)|0(Codec) li->cpu 422 * CPU |Pass |return 423 * Codec |return|Pass 424 */ 425 if (li->cpu != (np == codec)) 426 ret = func_dpcm(priv, np, codec, li, is_top); 427 /* else normal sound */ 428 } else { 429 /* 430 * np 431 * |1(CPU)|0(Codec) li->cpu 432 * CPU |Pass |return 433 * Codec |return|return 434 */ 435 if (li->cpu && (np != codec)) 436 ret = func_noml(priv, np, codec, li, is_top); 437 } 438 439 if (ret < 0) 440 goto error; 441 } 442 443 node = of_get_next_child(top, node); 444 } while (!is_top && node); 445 446 error: 447 of_node_put(node); 448 449 return ret; 450 } 451 452 static int simple_for_each_link(struct simple_util_priv *priv, 453 struct link_info *li, 454 int (*func_noml)(struct simple_util_priv *priv, 455 struct device_node *np, 456 struct device_node *codec, 457 struct link_info *li, bool is_top), 458 int (*func_dpcm)(struct simple_util_priv *priv, 459 struct device_node *np, 460 struct device_node *codec, 461 struct link_info *li, bool is_top)) 462 { 463 int ret; 464 /* 465 * Detect all CPU first, and Detect all Codec 2nd. 466 * 467 * In Normal sound case, all DAIs are detected 468 * as "CPU-Codec". 469 * 470 * In DPCM sound case, 471 * all CPUs are detected as "CPU-dummy", and 472 * all Codecs are detected as "dummy-Codec". 473 * To avoid random sub-device numbering, 474 * detect "dummy-Codec" in last; 475 */ 476 for (li->cpu = 1; li->cpu >= 0; li->cpu--) { 477 ret = __simple_for_each_link(priv, li, func_noml, func_dpcm); 478 if (ret < 0) 479 break; 480 } 481 482 return ret; 483 } 484 485 static void simple_depopulate_aux(void *data) 486 { 487 struct simple_util_priv *priv = data; 488 489 of_platform_depopulate(simple_priv_to_dev(priv)); 490 } 491 492 static int simple_populate_aux(struct simple_util_priv *priv) 493 { 494 struct device *dev = simple_priv_to_dev(priv); 495 struct device_node *node __free(device_node) = of_get_child_by_name(dev->of_node, PREFIX "additional-devs"); 496 int ret; 497 498 if (!node) 499 return 0; 500 501 ret = of_platform_populate(node, NULL, NULL, dev); 502 if (ret) 503 return ret; 504 505 return devm_add_action_or_reset(dev, simple_depopulate_aux, priv); 506 } 507 508 static int simple_parse_of(struct simple_util_priv *priv, struct link_info *li) 509 { 510 struct snd_soc_card *card = simple_priv_to_card(priv); 511 int ret; 512 513 ret = simple_util_parse_widgets(card, PREFIX); 514 if (ret < 0) 515 return ret; 516 517 ret = simple_util_parse_routing(card, PREFIX); 518 if (ret < 0) 519 return ret; 520 521 ret = simple_util_parse_pin_switches(card, PREFIX); 522 if (ret < 0) 523 return ret; 524 525 /* Single/Muti DAI link(s) & New style of DT node */ 526 memset(li, 0, sizeof(*li)); 527 ret = simple_for_each_link(priv, li, 528 simple_dai_link_of, 529 simple_dai_link_of_dpcm); 530 if (ret < 0) 531 return ret; 532 533 ret = simple_util_parse_card_name(card, PREFIX); 534 if (ret < 0) 535 return ret; 536 537 ret = simple_populate_aux(priv); 538 if (ret < 0) 539 return ret; 540 541 ret = snd_soc_of_parse_aux_devs(card, PREFIX "aux-devs"); 542 543 return ret; 544 } 545 546 static int simple_count_noml(struct simple_util_priv *priv, 547 struct device_node *np, 548 struct device_node *codec, 549 struct link_info *li, bool is_top) 550 { 551 if (li->link >= SNDRV_MAX_LINKS) { 552 struct device *dev = simple_priv_to_dev(priv); 553 554 dev_err(dev, "too many links\n"); 555 return -EINVAL; 556 } 557 558 /* 559 * DON'T REMOVE platforms 560 * 561 * Some CPU might be using soc-generic-dmaengine-pcm. This means CPU and Platform 562 * are different Component, but are sharing same component->dev. 563 * Simple Card had been supported it without special Platform selection. 564 * We need platforms here. 565 * 566 * In case of no Platform, it will be Platform == CPU, but Platform will be 567 * ignored by snd_soc_rtd_add_component(). 568 * 569 * see 570 * simple-card-utils.c :: simple_util_canonicalize_platform() 571 */ 572 li->num[li->link].cpus = 1; 573 li->num[li->link].platforms = 1; 574 575 li->num[li->link].codecs = 1; 576 577 li->link += 1; 578 579 return 0; 580 } 581 582 static int simple_count_dpcm(struct simple_util_priv *priv, 583 struct device_node *np, 584 struct device_node *codec, 585 struct link_info *li, bool is_top) 586 { 587 if (li->link >= SNDRV_MAX_LINKS) { 588 struct device *dev = simple_priv_to_dev(priv); 589 590 dev_err(dev, "too many links\n"); 591 return -EINVAL; 592 } 593 594 if (li->cpu) { 595 /* 596 * DON'T REMOVE platforms 597 * see 598 * simple_count_noml() 599 */ 600 li->num[li->link].cpus = 1; 601 li->num[li->link].platforms = 1; 602 603 li->link++; /* CPU-dummy */ 604 } else { 605 li->num[li->link].codecs = 1; 606 607 li->link++; /* dummy-Codec */ 608 } 609 610 return 0; 611 } 612 613 static int simple_get_dais_count(struct simple_util_priv *priv, 614 struct link_info *li) 615 { 616 struct device *dev = simple_priv_to_dev(priv); 617 struct device_node *top = dev->of_node; 618 619 /* 620 * link_num : number of links. 621 * CPU-Codec / CPU-dummy / dummy-Codec 622 * dais_num : number of DAIs 623 * ccnf_num : number of codec_conf 624 * same number for "dummy-Codec" 625 * 626 * ex1) 627 * CPU0 --- Codec0 link : 5 628 * CPU1 --- Codec1 dais : 7 629 * CPU2 -/ ccnf : 1 630 * CPU3 --- Codec2 631 * 632 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 633 * => 7 DAIs = 4xCPU + 3xCodec 634 * => 1 ccnf = 1xdummy-Codec 635 * 636 * ex2) 637 * CPU0 --- Codec0 link : 5 638 * CPU1 --- Codec1 dais : 6 639 * CPU2 -/ ccnf : 1 640 * CPU3 -/ 641 * 642 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 643 * => 6 DAIs = 4xCPU + 2xCodec 644 * => 1 ccnf = 1xdummy-Codec 645 * 646 * ex3) 647 * CPU0 --- Codec0 link : 6 648 * CPU1 -/ dais : 6 649 * CPU2 --- Codec1 ccnf : 2 650 * CPU3 -/ 651 * 652 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 653 * => 6 DAIs = 4xCPU + 2xCodec 654 * => 2 ccnf = 2xdummy-Codec 655 * 656 * ex4) 657 * CPU0 --- Codec0 (convert-rate) link : 3 658 * CPU1 --- Codec1 dais : 4 659 * ccnf : 1 660 * 661 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 662 * => 4 DAIs = 2xCPU + 2xCodec 663 * => 1 ccnf = 1xdummy-Codec 664 */ 665 if (!top) { 666 li->num[0].cpus = 1; 667 li->num[0].codecs = 1; 668 li->num[0].platforms = 1; 669 670 li->link = 1; 671 return 0; 672 } 673 674 return simple_for_each_link(priv, li, 675 simple_count_noml, 676 simple_count_dpcm); 677 } 678 679 static int simple_soc_probe(struct snd_soc_card *card) 680 { 681 struct simple_util_priv *priv = snd_soc_card_get_drvdata(card); 682 int ret; 683 684 ret = simple_util_init_hp(card, &priv->hp_jack, PREFIX); 685 if (ret < 0) 686 return ret; 687 688 ret = simple_util_init_mic(card, &priv->mic_jack, PREFIX); 689 if (ret < 0) 690 return ret; 691 692 ret = simple_util_init_aux_jacks(priv, PREFIX); 693 if (ret < 0) 694 return ret; 695 696 return 0; 697 } 698 699 static int simple_probe(struct platform_device *pdev) 700 { 701 struct simple_util_priv *priv; 702 struct device *dev = &pdev->dev; 703 struct device_node *np = dev->of_node; 704 struct snd_soc_card *card; 705 int ret; 706 707 /* Allocate the private data and the DAI link array */ 708 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 709 if (!priv) 710 return -ENOMEM; 711 712 card = simple_priv_to_card(priv); 713 card->owner = THIS_MODULE; 714 card->dev = dev; 715 card->probe = simple_soc_probe; 716 card->driver_name = "simple-card"; 717 718 struct link_info *li __free(kfree) = kzalloc(sizeof(*li), GFP_KERNEL); 719 if (!li) 720 return -ENOMEM; 721 722 ret = simple_get_dais_count(priv, li); 723 if (ret < 0) 724 return ret; 725 726 if (!li->link) 727 return -EINVAL; 728 729 ret = simple_util_init_priv(priv, li); 730 if (ret < 0) 731 return ret; 732 733 if (np && of_device_is_available(np)) { 734 735 ret = simple_parse_of(priv, li); 736 if (ret < 0) { 737 dev_err_probe(dev, ret, "parse error\n"); 738 goto err; 739 } 740 741 } else { 742 struct simple_util_info *cinfo; 743 struct snd_soc_dai_link_component *cpus; 744 struct snd_soc_dai_link_component *codecs; 745 struct snd_soc_dai_link_component *platform; 746 struct snd_soc_dai_link *dai_link = priv->dai_link; 747 struct simple_dai_props *dai_props = priv->dai_props; 748 749 ret = -EINVAL; 750 751 cinfo = dev->platform_data; 752 if (!cinfo) { 753 dev_err(dev, "no info for asoc-simple-card\n"); 754 goto err; 755 } 756 757 if (!cinfo->name || 758 !cinfo->codec_dai.name || 759 !cinfo->codec || 760 !cinfo->platform || 761 !cinfo->cpu_dai.name) { 762 dev_err(dev, "insufficient simple_util_info settings\n"); 763 goto err; 764 } 765 766 cpus = dai_link->cpus; 767 cpus->dai_name = cinfo->cpu_dai.name; 768 769 codecs = dai_link->codecs; 770 codecs->name = cinfo->codec; 771 codecs->dai_name = cinfo->codec_dai.name; 772 773 platform = dai_link->platforms; 774 platform->name = cinfo->platform; 775 776 card->name = (cinfo->card) ? cinfo->card : cinfo->name; 777 dai_link->name = cinfo->name; 778 dai_link->stream_name = cinfo->name; 779 dai_link->dai_fmt = cinfo->daifmt; 780 dai_link->init = simple_util_dai_init; 781 memcpy(dai_props->cpu_dai, &cinfo->cpu_dai, 782 sizeof(*dai_props->cpu_dai)); 783 memcpy(dai_props->codec_dai, &cinfo->codec_dai, 784 sizeof(*dai_props->codec_dai)); 785 } 786 787 snd_soc_card_set_drvdata(card, priv); 788 789 simple_util_debug_info(priv); 790 791 ret = devm_snd_soc_register_card(dev, card); 792 if (ret < 0) 793 goto err; 794 795 return 0; 796 err: 797 simple_util_clean_reference(card); 798 799 return ret; 800 } 801 802 static const struct of_device_id simple_of_match[] = { 803 { .compatible = "simple-audio-card", }, 804 { .compatible = "simple-scu-audio-card", 805 .data = (void *)DPCM_SELECTABLE }, 806 {}, 807 }; 808 MODULE_DEVICE_TABLE(of, simple_of_match); 809 810 static struct platform_driver simple_card = { 811 .driver = { 812 .name = "asoc-simple-card", 813 .pm = &snd_soc_pm_ops, 814 .of_match_table = simple_of_match, 815 }, 816 .probe = simple_probe, 817 .remove = simple_util_remove, 818 }; 819 820 module_platform_driver(simple_card); 821 822 MODULE_ALIAS("platform:asoc-simple-card"); 823 MODULE_LICENSE("GPL v2"); 824 MODULE_DESCRIPTION("ASoC Simple Sound Card"); 825 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 826