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/platform_device.h> 13 #include <linux/string.h> 14 #include <sound/simple_card.h> 15 #include <sound/soc-dai.h> 16 #include <sound/soc.h> 17 18 struct simple_priv { 19 struct snd_soc_card snd_card; 20 struct simple_dai_props { 21 struct asoc_simple_dai *cpu_dai; 22 struct asoc_simple_dai *codec_dai; 23 struct snd_soc_dai_link_component codecs; /* single codec */ 24 struct snd_soc_dai_link_component platforms; 25 struct asoc_simple_card_data adata; 26 struct snd_soc_codec_conf *codec_conf; 27 unsigned int mclk_fs; 28 } *dai_props; 29 struct asoc_simple_jack hp_jack; 30 struct asoc_simple_jack mic_jack; 31 struct snd_soc_dai_link *dai_link; 32 struct asoc_simple_dai *dais; 33 struct snd_soc_codec_conf *codec_conf; 34 }; 35 36 struct link_info { 37 int dais; /* number of dai */ 38 int link; /* number of link */ 39 int conf; /* number of codec_conf */ 40 int cpu; /* turn for CPU / Codec */ 41 }; 42 43 #define simple_priv_to_card(priv) (&(priv)->snd_card) 44 #define simple_priv_to_props(priv, i) ((priv)->dai_props + (i)) 45 #define simple_priv_to_dev(priv) (simple_priv_to_card(priv)->dev) 46 #define simple_priv_to_link(priv, i) (simple_priv_to_card(priv)->dai_link + (i)) 47 48 #define DAI "sound-dai" 49 #define CELL "#sound-dai-cells" 50 #define PREFIX "simple-audio-card," 51 52 static int simple_startup(struct snd_pcm_substream *substream) 53 { 54 struct snd_soc_pcm_runtime *rtd = substream->private_data; 55 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 56 struct simple_dai_props *dai_props = 57 simple_priv_to_props(priv, rtd->num); 58 int ret; 59 60 ret = asoc_simple_card_clk_enable(dai_props->cpu_dai); 61 if (ret) 62 return ret; 63 64 ret = asoc_simple_card_clk_enable(dai_props->codec_dai); 65 if (ret) 66 asoc_simple_card_clk_disable(dai_props->cpu_dai); 67 68 return ret; 69 } 70 71 static void simple_shutdown(struct snd_pcm_substream *substream) 72 { 73 struct snd_soc_pcm_runtime *rtd = substream->private_data; 74 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 75 struct simple_dai_props *dai_props = 76 simple_priv_to_props(priv, rtd->num); 77 78 asoc_simple_card_clk_disable(dai_props->cpu_dai); 79 80 asoc_simple_card_clk_disable(dai_props->codec_dai); 81 } 82 83 static int simple_set_clk_rate(struct asoc_simple_dai *simple_dai, 84 unsigned long rate) 85 { 86 if (!simple_dai) 87 return 0; 88 89 if (!simple_dai->clk) 90 return 0; 91 92 if (clk_get_rate(simple_dai->clk) == rate) 93 return 0; 94 95 return clk_set_rate(simple_dai->clk, rate); 96 } 97 98 static int simple_hw_params(struct snd_pcm_substream *substream, 99 struct snd_pcm_hw_params *params) 100 { 101 struct snd_soc_pcm_runtime *rtd = substream->private_data; 102 struct snd_soc_dai *codec_dai = rtd->codec_dai; 103 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 104 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 105 struct simple_dai_props *dai_props = 106 simple_priv_to_props(priv, rtd->num); 107 unsigned int mclk, mclk_fs = 0; 108 int ret = 0; 109 110 if (dai_props->mclk_fs) 111 mclk_fs = dai_props->mclk_fs; 112 113 if (mclk_fs) { 114 mclk = params_rate(params) * mclk_fs; 115 116 ret = simple_set_clk_rate(dai_props->codec_dai, mclk); 117 if (ret < 0) 118 return ret; 119 120 ret = simple_set_clk_rate(dai_props->cpu_dai, mclk); 121 if (ret < 0) 122 return ret; 123 124 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 125 SND_SOC_CLOCK_IN); 126 if (ret && ret != -ENOTSUPP) 127 goto err; 128 129 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 130 SND_SOC_CLOCK_OUT); 131 if (ret && ret != -ENOTSUPP) 132 goto err; 133 } 134 return 0; 135 err: 136 return ret; 137 } 138 139 static const struct snd_soc_ops simple_ops = { 140 .startup = simple_startup, 141 .shutdown = simple_shutdown, 142 .hw_params = simple_hw_params, 143 }; 144 145 static int simple_dai_init(struct snd_soc_pcm_runtime *rtd) 146 { 147 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 148 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); 149 int ret; 150 151 ret = asoc_simple_card_init_dai(rtd->codec_dai, 152 dai_props->codec_dai); 153 if (ret < 0) 154 return ret; 155 156 ret = asoc_simple_card_init_dai(rtd->cpu_dai, 157 dai_props->cpu_dai); 158 if (ret < 0) 159 return ret; 160 161 return 0; 162 } 163 164 static int simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 165 struct snd_pcm_hw_params *params) 166 { 167 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 168 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); 169 170 asoc_simple_card_convert_fixup(&dai_props->adata, params); 171 172 return 0; 173 } 174 175 static void simple_get_conversion(struct device *dev, 176 struct device_node *np, 177 struct asoc_simple_card_data *adata) 178 { 179 struct device_node *top = dev->of_node; 180 struct device_node *node = of_get_parent(np); 181 182 asoc_simple_card_parse_convert(dev, top, PREFIX, adata); 183 asoc_simple_card_parse_convert(dev, node, PREFIX, adata); 184 asoc_simple_card_parse_convert(dev, node, NULL, adata); 185 asoc_simple_card_parse_convert(dev, np, NULL, adata); 186 187 of_node_put(node); 188 } 189 190 static int simple_dai_link_of_dpcm(struct simple_priv *priv, 191 struct device_node *np, 192 struct device_node *codec, 193 struct link_info *li, 194 bool is_top) 195 { 196 struct device *dev = simple_priv_to_dev(priv); 197 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 198 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 199 struct asoc_simple_dai *dai; 200 struct snd_soc_dai_link_component *codecs = dai_link->codecs; 201 struct device_node *top = dev->of_node; 202 struct device_node *node = of_get_parent(np); 203 char prop[128]; 204 char *prefix = ""; 205 int ret; 206 207 /* 208 * |CPU |Codec : turn 209 * CPU |Pass |return 210 * Codec |return|Pass 211 * np 212 */ 213 if (li->cpu == (np == codec)) 214 return 0; 215 216 dev_dbg(dev, "link_of DPCM (%pOF)\n", np); 217 218 li->link++; 219 220 of_node_put(node); 221 222 /* For single DAI link & old style of DT node */ 223 if (is_top) 224 prefix = PREFIX; 225 226 if (li->cpu) { 227 int is_single_links = 0; 228 229 /* BE is dummy */ 230 codecs->of_node = NULL; 231 codecs->dai_name = "snd-soc-dummy-dai"; 232 codecs->name = "snd-soc-dummy"; 233 234 /* FE settings */ 235 dai_link->dynamic = 1; 236 dai_link->dpcm_merged_format = 1; 237 238 dai = 239 dai_props->cpu_dai = &priv->dais[li->dais++]; 240 241 ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL, 242 &is_single_links); 243 if (ret) 244 return ret; 245 246 ret = asoc_simple_card_parse_clk_cpu(dev, np, dai_link, dai); 247 if (ret < 0) 248 return ret; 249 250 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 251 "fe.%s", 252 dai_link->cpu_dai_name); 253 if (ret < 0) 254 return ret; 255 256 asoc_simple_card_canonicalize_cpu(dai_link, is_single_links); 257 } else { 258 struct snd_soc_codec_conf *cconf; 259 260 /* FE is dummy */ 261 dai_link->cpu_of_node = NULL; 262 dai_link->cpu_dai_name = "snd-soc-dummy-dai"; 263 dai_link->cpu_name = "snd-soc-dummy"; 264 265 /* BE settings */ 266 dai_link->no_pcm = 1; 267 dai_link->be_hw_params_fixup = simple_be_hw_params_fixup; 268 269 dai = 270 dai_props->codec_dai = &priv->dais[li->dais++]; 271 272 cconf = 273 dai_props->codec_conf = &priv->codec_conf[li->conf++]; 274 275 ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL); 276 if (ret < 0) 277 return ret; 278 279 ret = asoc_simple_card_parse_clk_codec(dev, np, dai_link, dai); 280 if (ret < 0) 281 return ret; 282 283 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 284 "be.%s", 285 codecs->dai_name); 286 if (ret < 0) 287 return ret; 288 289 /* check "prefix" from top node */ 290 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 291 PREFIX "prefix"); 292 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 293 "prefix"); 294 snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node, 295 "prefix"); 296 } 297 298 simple_get_conversion(dev, np, &dai_props->adata); 299 300 asoc_simple_card_canonicalize_platform(dai_link); 301 302 ret = asoc_simple_card_of_parse_tdm(np, dai); 303 if (ret) 304 return ret; 305 306 snprintf(prop, sizeof(prop), "%smclk-fs", prefix); 307 of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); 308 of_property_read_u32(node, prop, &dai_props->mclk_fs); 309 of_property_read_u32(np, prop, &dai_props->mclk_fs); 310 311 ret = asoc_simple_card_parse_daifmt(dev, node, codec, 312 prefix, &dai_link->dai_fmt); 313 if (ret < 0) 314 return ret; 315 316 dai_link->dpcm_playback = 1; 317 dai_link->dpcm_capture = 1; 318 dai_link->ops = &simple_ops; 319 dai_link->init = simple_dai_init; 320 321 return 0; 322 } 323 324 static int simple_dai_link_of(struct simple_priv *priv, 325 struct device_node *np, 326 struct device_node *codec, 327 struct link_info *li, 328 bool is_top) 329 { 330 struct device *dev = simple_priv_to_dev(priv); 331 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 332 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 333 struct asoc_simple_dai *cpu_dai; 334 struct asoc_simple_dai *codec_dai; 335 struct device_node *top = dev->of_node; 336 struct device_node *cpu = NULL; 337 struct device_node *node = NULL; 338 struct device_node *plat = NULL; 339 char prop[128]; 340 char *prefix = ""; 341 int ret, single_cpu; 342 343 /* 344 * |CPU |Codec : turn 345 * CPU |Pass |return 346 * Codec |return|return 347 * np 348 */ 349 if (!li->cpu || np == codec) 350 return 0; 351 352 cpu = np; 353 node = of_get_parent(np); 354 li->link++; 355 356 dev_dbg(dev, "link_of (%pOF)\n", node); 357 358 /* For single DAI link & old style of DT node */ 359 if (is_top) 360 prefix = PREFIX; 361 362 snprintf(prop, sizeof(prop), "%splat", prefix); 363 plat = of_get_child_by_name(node, prop); 364 365 cpu_dai = 366 dai_props->cpu_dai = &priv->dais[li->dais++]; 367 codec_dai = 368 dai_props->codec_dai = &priv->dais[li->dais++]; 369 370 ret = asoc_simple_card_parse_daifmt(dev, node, codec, 371 prefix, &dai_link->dai_fmt); 372 if (ret < 0) 373 goto dai_link_of_err; 374 375 snprintf(prop, sizeof(prop), "%smclk-fs", prefix); 376 of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); 377 of_property_read_u32(node, prop, &dai_props->mclk_fs); 378 of_property_read_u32(cpu, prop, &dai_props->mclk_fs); 379 of_property_read_u32(codec, prop, &dai_props->mclk_fs); 380 381 ret = asoc_simple_card_parse_cpu(cpu, dai_link, 382 DAI, CELL, &single_cpu); 383 if (ret < 0) 384 goto dai_link_of_err; 385 386 ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL); 387 if (ret < 0) 388 goto dai_link_of_err; 389 390 ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL); 391 if (ret < 0) 392 goto dai_link_of_err; 393 394 ret = asoc_simple_card_of_parse_tdm(cpu, cpu_dai); 395 if (ret < 0) 396 goto dai_link_of_err; 397 398 ret = asoc_simple_card_of_parse_tdm(codec, codec_dai); 399 if (ret < 0) 400 goto dai_link_of_err; 401 402 ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai); 403 if (ret < 0) 404 goto dai_link_of_err; 405 406 ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai); 407 if (ret < 0) 408 goto dai_link_of_err; 409 410 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 411 "%s-%s", 412 dai_link->cpu_dai_name, 413 dai_link->codecs->dai_name); 414 if (ret < 0) 415 goto dai_link_of_err; 416 417 dai_link->ops = &simple_ops; 418 dai_link->init = simple_dai_init; 419 420 asoc_simple_card_canonicalize_cpu(dai_link, single_cpu); 421 asoc_simple_card_canonicalize_platform(dai_link); 422 423 dai_link_of_err: 424 of_node_put(plat); 425 of_node_put(node); 426 427 return ret; 428 } 429 430 static int simple_for_each_link(struct simple_priv *priv, 431 struct link_info *li, 432 int (*func_noml)(struct simple_priv *priv, 433 struct device_node *np, 434 struct device_node *codec, 435 struct link_info *li, bool is_top), 436 int (*func_dpcm)(struct simple_priv *priv, 437 struct device_node *np, 438 struct device_node *codec, 439 struct link_info *li, bool is_top)) 440 { 441 struct device *dev = simple_priv_to_dev(priv); 442 struct device_node *top = dev->of_node; 443 struct device_node *node; 444 bool is_top = 0; 445 int ret = 0; 446 447 /* Check if it has dai-link */ 448 node = of_get_child_by_name(top, PREFIX "dai-link"); 449 if (!node) { 450 node = of_node_get(top); 451 is_top = 1; 452 } 453 454 /* loop for all dai-link */ 455 do { 456 struct asoc_simple_card_data adata; 457 struct device_node *codec; 458 struct device_node *np; 459 int num = of_get_child_count(node); 460 461 /* get codec */ 462 codec = of_get_child_by_name(node, is_top ? 463 PREFIX "codec" : "codec"); 464 if (!codec) { 465 ret = -ENODEV; 466 goto error; 467 } 468 469 of_node_put(codec); 470 471 /* get convert-xxx property */ 472 memset(&adata, 0, sizeof(adata)); 473 for_each_child_of_node(node, np) 474 simple_get_conversion(dev, np, &adata); 475 476 /* loop for all CPU/Codec node */ 477 for_each_child_of_node(node, np) { 478 /* 479 * It is DPCM 480 * if it has many CPUs, 481 * or has convert-xxx property 482 */ 483 if (num > 2 || 484 adata.convert_rate || adata.convert_channels) 485 ret = func_dpcm(priv, np, codec, li, is_top); 486 /* else normal sound */ 487 else 488 ret = func_noml(priv, np, codec, li, is_top); 489 490 if (ret < 0) { 491 of_node_put(np); 492 goto error; 493 } 494 } 495 496 node = of_get_next_child(top, node); 497 } while (!is_top && node); 498 499 error: 500 of_node_put(node); 501 return ret; 502 } 503 504 static int simple_parse_aux_devs(struct device_node *node, 505 struct simple_priv *priv) 506 { 507 struct device *dev = simple_priv_to_dev(priv); 508 struct device_node *aux_node; 509 struct snd_soc_card *card = simple_priv_to_card(priv); 510 int i, n, len; 511 512 if (!of_find_property(node, PREFIX "aux-devs", &len)) 513 return 0; /* Ok to have no aux-devs */ 514 515 n = len / sizeof(__be32); 516 if (n <= 0) 517 return -EINVAL; 518 519 card->aux_dev = devm_kcalloc(dev, 520 n, sizeof(*card->aux_dev), GFP_KERNEL); 521 if (!card->aux_dev) 522 return -ENOMEM; 523 524 for (i = 0; i < n; i++) { 525 aux_node = of_parse_phandle(node, PREFIX "aux-devs", i); 526 if (!aux_node) 527 return -EINVAL; 528 card->aux_dev[i].codec_of_node = aux_node; 529 } 530 531 card->num_aux_devs = n; 532 return 0; 533 } 534 535 static int simple_parse_of(struct simple_priv *priv) 536 { 537 struct device *dev = simple_priv_to_dev(priv); 538 struct device_node *top = dev->of_node; 539 struct snd_soc_card *card = simple_priv_to_card(priv); 540 struct link_info li; 541 int ret; 542 543 if (!top) 544 return -EINVAL; 545 546 ret = asoc_simple_card_of_parse_widgets(card, PREFIX); 547 if (ret < 0) 548 return ret; 549 550 ret = asoc_simple_card_of_parse_routing(card, PREFIX); 551 if (ret < 0) 552 return ret; 553 554 /* Single/Muti DAI link(s) & New style of DT node */ 555 memset(&li, 0, sizeof(li)); 556 for (li.cpu = 1; li.cpu >= 0; li.cpu--) { 557 /* 558 * Detect all CPU first, and Detect all Codec 2nd. 559 * 560 * In Normal sound case, all DAIs are detected 561 * as "CPU-Codec". 562 * 563 * In DPCM sound case, 564 * all CPUs are detected as "CPU-dummy", and 565 * all Codecs are detected as "dummy-Codec". 566 * To avoid random sub-device numbering, 567 * detect "dummy-Codec" in last; 568 */ 569 ret = simple_for_each_link(priv, &li, 570 simple_dai_link_of, 571 simple_dai_link_of_dpcm); 572 if (ret < 0) 573 return ret; 574 } 575 576 ret = asoc_simple_card_parse_card_name(card, PREFIX); 577 if (ret < 0) 578 return ret; 579 580 ret = simple_parse_aux_devs(top, priv); 581 582 return ret; 583 } 584 585 static int simple_count_noml(struct simple_priv *priv, 586 struct device_node *np, 587 struct device_node *codec, 588 struct link_info *li, bool is_top) 589 { 590 li->dais++; /* CPU or Codec */ 591 if (np != codec) 592 li->link++; /* CPU-Codec */ 593 594 return 0; 595 } 596 597 static int simple_count_dpcm(struct simple_priv *priv, 598 struct device_node *np, 599 struct device_node *codec, 600 struct link_info *li, bool is_top) 601 { 602 li->dais++; /* CPU or Codec */ 603 li->link++; /* CPU-dummy or dummy-Codec */ 604 if (np == codec) 605 li->conf++; 606 607 return 0; 608 } 609 610 static void simple_get_dais_count(struct simple_priv *priv, 611 struct link_info *li) 612 { 613 struct device *dev = simple_priv_to_dev(priv); 614 struct device_node *top = dev->of_node; 615 616 /* 617 * link_num : number of links. 618 * CPU-Codec / CPU-dummy / dummy-Codec 619 * dais_num : number of DAIs 620 * ccnf_num : number of codec_conf 621 * same number for "dummy-Codec" 622 * 623 * ex1) 624 * CPU0 --- Codec0 link : 5 625 * CPU1 --- Codec1 dais : 7 626 * CPU2 -/ ccnf : 1 627 * CPU3 --- Codec2 628 * 629 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 630 * => 7 DAIs = 4xCPU + 3xCodec 631 * => 1 ccnf = 1xdummy-Codec 632 * 633 * ex2) 634 * CPU0 --- Codec0 link : 5 635 * CPU1 --- Codec1 dais : 6 636 * CPU2 -/ ccnf : 1 637 * CPU3 -/ 638 * 639 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 640 * => 6 DAIs = 4xCPU + 2xCodec 641 * => 1 ccnf = 1xdummy-Codec 642 * 643 * ex3) 644 * CPU0 --- Codec0 link : 6 645 * CPU1 -/ dais : 6 646 * CPU2 --- Codec1 ccnf : 2 647 * CPU3 -/ 648 * 649 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 650 * => 6 DAIs = 4xCPU + 2xCodec 651 * => 2 ccnf = 2xdummy-Codec 652 * 653 * ex4) 654 * CPU0 --- Codec0 (convert-rate) link : 3 655 * CPU1 --- Codec1 dais : 4 656 * ccnf : 1 657 * 658 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 659 * => 4 DAIs = 2xCPU + 2xCodec 660 * => 1 ccnf = 1xdummy-Codec 661 */ 662 if (!top) { 663 li->link = 1; 664 li->dais = 2; 665 li->conf = 0; 666 return; 667 } 668 669 simple_for_each_link(priv, li, 670 simple_count_noml, 671 simple_count_dpcm); 672 673 dev_dbg(dev, "link %d, dais %d, ccnf %d\n", 674 li->link, li->dais, li->conf); 675 } 676 677 static int simple_soc_probe(struct snd_soc_card *card) 678 { 679 struct simple_priv *priv = snd_soc_card_get_drvdata(card); 680 int ret; 681 682 ret = asoc_simple_card_init_hp(card, &priv->hp_jack, PREFIX); 683 if (ret < 0) 684 return ret; 685 686 ret = asoc_simple_card_init_mic(card, &priv->mic_jack, PREFIX); 687 if (ret < 0) 688 return ret; 689 690 return 0; 691 } 692 693 static int simple_probe(struct platform_device *pdev) 694 { 695 struct simple_priv *priv; 696 struct snd_soc_dai_link *dai_link; 697 struct simple_dai_props *dai_props; 698 struct asoc_simple_dai *dais; 699 struct device *dev = &pdev->dev; 700 struct device_node *np = dev->of_node; 701 struct snd_soc_card *card; 702 struct snd_soc_codec_conf *cconf; 703 struct link_info li; 704 int ret, i; 705 706 /* Allocate the private data and the DAI link array */ 707 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 708 if (!priv) 709 return -ENOMEM; 710 711 card = simple_priv_to_card(priv); 712 card->owner = THIS_MODULE; 713 card->dev = dev; 714 card->probe = simple_soc_probe; 715 716 memset(&li, 0, sizeof(li)); 717 simple_get_dais_count(priv, &li); 718 if (!li.link || !li.dais) 719 return -EINVAL; 720 721 dai_props = devm_kcalloc(dev, li.link, sizeof(*dai_props), GFP_KERNEL); 722 dai_link = devm_kcalloc(dev, li.link, sizeof(*dai_link), GFP_KERNEL); 723 dais = devm_kcalloc(dev, li.dais, sizeof(*dais), GFP_KERNEL); 724 cconf = devm_kcalloc(dev, li.conf, sizeof(*cconf), GFP_KERNEL); 725 if (!dai_props || !dai_link || !dais) 726 return -ENOMEM; 727 728 /* 729 * Use snd_soc_dai_link_component instead of legacy style 730 * It is codec only. but cpu/platform will be supported in the future. 731 * see 732 * soc-core.c :: snd_soc_init_multicodec() 733 */ 734 for (i = 0; i < li.link; i++) { 735 dai_link[i].codecs = &dai_props[i].codecs; 736 dai_link[i].num_codecs = 1; 737 dai_link[i].platforms = &dai_props[i].platforms; 738 dai_link[i].num_platforms = 1; 739 } 740 741 priv->dai_props = dai_props; 742 priv->dai_link = dai_link; 743 priv->dais = dais; 744 priv->codec_conf = cconf; 745 746 card->dai_link = priv->dai_link; 747 card->num_links = li.link; 748 card->codec_conf = cconf; 749 card->num_configs = li.conf; 750 751 if (np && of_device_is_available(np)) { 752 753 ret = simple_parse_of(priv); 754 if (ret < 0) { 755 if (ret != -EPROBE_DEFER) 756 dev_err(dev, "parse error %d\n", ret); 757 goto err; 758 } 759 760 } else { 761 struct asoc_simple_card_info *cinfo; 762 struct snd_soc_dai_link_component *codecs; 763 struct snd_soc_dai_link_component *platform; 764 int dai_idx = 0; 765 766 cinfo = dev->platform_data; 767 if (!cinfo) { 768 dev_err(dev, "no info for asoc-simple-card\n"); 769 return -EINVAL; 770 } 771 772 if (!cinfo->name || 773 !cinfo->codec_dai.name || 774 !cinfo->codec || 775 !cinfo->platform || 776 !cinfo->cpu_dai.name) { 777 dev_err(dev, "insufficient asoc_simple_card_info settings\n"); 778 return -EINVAL; 779 } 780 781 dai_props->cpu_dai = &priv->dais[dai_idx++]; 782 dai_props->codec_dai = &priv->dais[dai_idx++]; 783 784 codecs = dai_link->codecs; 785 codecs->name = cinfo->codec; 786 codecs->dai_name = cinfo->codec_dai.name; 787 788 platform = dai_link->platforms; 789 platform->name = cinfo->platform; 790 791 card->name = (cinfo->card) ? cinfo->card : cinfo->name; 792 dai_link->name = cinfo->name; 793 dai_link->stream_name = cinfo->name; 794 dai_link->cpu_dai_name = cinfo->cpu_dai.name; 795 dai_link->dai_fmt = cinfo->daifmt; 796 dai_link->init = simple_dai_init; 797 memcpy(priv->dai_props->cpu_dai, &cinfo->cpu_dai, 798 sizeof(*priv->dai_props->cpu_dai)); 799 memcpy(priv->dai_props->codec_dai, &cinfo->codec_dai, 800 sizeof(*priv->dai_props->codec_dai)); 801 } 802 803 snd_soc_card_set_drvdata(card, priv); 804 805 ret = devm_snd_soc_register_card(dev, card); 806 if (ret < 0) 807 goto err; 808 809 return 0; 810 err: 811 asoc_simple_card_clean_reference(card); 812 813 return ret; 814 } 815 816 static int simple_remove(struct platform_device *pdev) 817 { 818 struct snd_soc_card *card = platform_get_drvdata(pdev); 819 820 return asoc_simple_card_clean_reference(card); 821 } 822 823 static const struct of_device_id simple_of_match[] = { 824 { .compatible = "simple-audio-card", }, 825 { .compatible = "simple-scu-audio-card", }, 826 {}, 827 }; 828 MODULE_DEVICE_TABLE(of, simple_of_match); 829 830 static struct platform_driver asoc_simple_card = { 831 .driver = { 832 .name = "asoc-simple-card", 833 .pm = &snd_soc_pm_ops, 834 .of_match_table = simple_of_match, 835 }, 836 .probe = simple_probe, 837 .remove = simple_remove, 838 }; 839 840 module_platform_driver(asoc_simple_card); 841 842 MODULE_ALIAS("platform:asoc-simple-card"); 843 MODULE_LICENSE("GPL v2"); 844 MODULE_DESCRIPTION("ASoC Simple Sound Card"); 845 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 846