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 struct simple_priv { 22 struct snd_soc_card snd_card; 23 struct simple_dai_props { 24 struct asoc_simple_dai *cpu_dai; 25 struct asoc_simple_dai *codec_dai; 26 struct snd_soc_dai_link_component codecs; /* single codec */ 27 struct snd_soc_dai_link_component platforms; 28 struct asoc_simple_card_data adata; 29 struct snd_soc_codec_conf *codec_conf; 30 unsigned int mclk_fs; 31 } *dai_props; 32 struct asoc_simple_jack hp_jack; 33 struct asoc_simple_jack mic_jack; 34 struct snd_soc_dai_link *dai_link; 35 struct asoc_simple_dai *dais; 36 struct snd_soc_codec_conf *codec_conf; 37 }; 38 39 struct link_info { 40 int dais; /* number of dai */ 41 int link; /* number of link */ 42 int conf; /* number of codec_conf */ 43 int cpu; /* turn for CPU / Codec */ 44 }; 45 46 #define simple_priv_to_card(priv) (&(priv)->snd_card) 47 #define simple_priv_to_props(priv, i) ((priv)->dai_props + (i)) 48 #define simple_priv_to_dev(priv) (simple_priv_to_card(priv)->dev) 49 #define simple_priv_to_link(priv, i) (simple_priv_to_card(priv)->dai_link + (i)) 50 51 #define DAI "sound-dai" 52 #define CELL "#sound-dai-cells" 53 #define PREFIX "simple-audio-card," 54 55 static int simple_startup(struct snd_pcm_substream *substream) 56 { 57 struct snd_soc_pcm_runtime *rtd = substream->private_data; 58 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 59 struct simple_dai_props *dai_props = 60 simple_priv_to_props(priv, rtd->num); 61 int ret; 62 63 ret = asoc_simple_card_clk_enable(dai_props->cpu_dai); 64 if (ret) 65 return ret; 66 67 ret = asoc_simple_card_clk_enable(dai_props->codec_dai); 68 if (ret) 69 asoc_simple_card_clk_disable(dai_props->cpu_dai); 70 71 return ret; 72 } 73 74 static void simple_shutdown(struct snd_pcm_substream *substream) 75 { 76 struct snd_soc_pcm_runtime *rtd = substream->private_data; 77 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 78 struct simple_dai_props *dai_props = 79 simple_priv_to_props(priv, rtd->num); 80 81 asoc_simple_card_clk_disable(dai_props->cpu_dai); 82 83 asoc_simple_card_clk_disable(dai_props->codec_dai); 84 } 85 86 static int simple_set_clk_rate(struct asoc_simple_dai *simple_dai, 87 unsigned long rate) 88 { 89 if (!simple_dai) 90 return 0; 91 92 if (!simple_dai->clk) 93 return 0; 94 95 if (clk_get_rate(simple_dai->clk) == rate) 96 return 0; 97 98 return clk_set_rate(simple_dai->clk, rate); 99 } 100 101 static int simple_hw_params(struct snd_pcm_substream *substream, 102 struct snd_pcm_hw_params *params) 103 { 104 struct snd_soc_pcm_runtime *rtd = substream->private_data; 105 struct snd_soc_dai *codec_dai = rtd->codec_dai; 106 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 107 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 108 struct simple_dai_props *dai_props = 109 simple_priv_to_props(priv, rtd->num); 110 unsigned int mclk, mclk_fs = 0; 111 int ret = 0; 112 113 if (dai_props->mclk_fs) 114 mclk_fs = dai_props->mclk_fs; 115 116 if (mclk_fs) { 117 mclk = params_rate(params) * mclk_fs; 118 119 ret = simple_set_clk_rate(dai_props->codec_dai, mclk); 120 if (ret < 0) 121 return ret; 122 123 ret = simple_set_clk_rate(dai_props->cpu_dai, mclk); 124 if (ret < 0) 125 return ret; 126 127 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 128 SND_SOC_CLOCK_IN); 129 if (ret && ret != -ENOTSUPP) 130 goto err; 131 132 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 133 SND_SOC_CLOCK_OUT); 134 if (ret && ret != -ENOTSUPP) 135 goto err; 136 } 137 return 0; 138 err: 139 return ret; 140 } 141 142 static const struct snd_soc_ops simple_ops = { 143 .startup = simple_startup, 144 .shutdown = simple_shutdown, 145 .hw_params = simple_hw_params, 146 }; 147 148 static int simple_dai_init(struct snd_soc_pcm_runtime *rtd) 149 { 150 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 151 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); 152 int ret; 153 154 ret = asoc_simple_card_init_dai(rtd->codec_dai, 155 dai_props->codec_dai); 156 if (ret < 0) 157 return ret; 158 159 ret = asoc_simple_card_init_dai(rtd->cpu_dai, 160 dai_props->cpu_dai); 161 if (ret < 0) 162 return ret; 163 164 return 0; 165 } 166 167 static int simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 168 struct snd_pcm_hw_params *params) 169 { 170 struct simple_priv *priv = snd_soc_card_get_drvdata(rtd->card); 171 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num); 172 173 asoc_simple_card_convert_fixup(&dai_props->adata, params); 174 175 return 0; 176 } 177 178 static void simple_get_conversion(struct device *dev, 179 struct device_node *np, 180 struct asoc_simple_card_data *adata) 181 { 182 struct device_node *top = dev->of_node; 183 struct device_node *node = of_get_parent(np); 184 185 asoc_simple_card_parse_convert(dev, top, PREFIX, adata); 186 asoc_simple_card_parse_convert(dev, node, PREFIX, adata); 187 asoc_simple_card_parse_convert(dev, node, NULL, adata); 188 asoc_simple_card_parse_convert(dev, np, NULL, adata); 189 190 of_node_put(node); 191 } 192 193 static int simple_dai_link_of_dpcm(struct simple_priv *priv, 194 struct device_node *np, 195 struct device_node *codec, 196 struct link_info *li, 197 bool is_top) 198 { 199 struct device *dev = simple_priv_to_dev(priv); 200 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 201 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 202 struct asoc_simple_dai *dai; 203 struct snd_soc_dai_link_component *codecs = dai_link->codecs; 204 struct device_node *top = dev->of_node; 205 struct device_node *node = of_get_parent(np); 206 char prop[128]; 207 char *prefix = ""; 208 int ret; 209 210 /* 211 * |CPU |Codec : turn 212 * CPU |Pass |return 213 * Codec |return|Pass 214 * np 215 */ 216 if (li->cpu == (np == codec)) 217 return 0; 218 219 dev_dbg(dev, "link_of DPCM (%pOF)\n", np); 220 221 li->link++; 222 223 of_node_put(node); 224 225 /* For single DAI link & old style of DT node */ 226 if (is_top) 227 prefix = PREFIX; 228 229 if (li->cpu) { 230 int is_single_links = 0; 231 232 /* BE is dummy */ 233 codecs->of_node = NULL; 234 codecs->dai_name = "snd-soc-dummy-dai"; 235 codecs->name = "snd-soc-dummy"; 236 237 /* FE settings */ 238 dai_link->dynamic = 1; 239 dai_link->dpcm_merged_format = 1; 240 241 dai = 242 dai_props->cpu_dai = &priv->dais[li->dais++]; 243 244 ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL, 245 &is_single_links); 246 if (ret) 247 return ret; 248 249 ret = asoc_simple_card_parse_clk_cpu(dev, np, dai_link, dai); 250 if (ret < 0) 251 return ret; 252 253 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 254 "fe.%s", 255 dai_link->cpu_dai_name); 256 if (ret < 0) 257 return ret; 258 259 asoc_simple_card_canonicalize_cpu(dai_link, is_single_links); 260 } else { 261 struct snd_soc_codec_conf *cconf; 262 263 /* FE is dummy */ 264 dai_link->cpu_of_node = NULL; 265 dai_link->cpu_dai_name = "snd-soc-dummy-dai"; 266 dai_link->cpu_name = "snd-soc-dummy"; 267 268 /* BE settings */ 269 dai_link->no_pcm = 1; 270 dai_link->be_hw_params_fixup = simple_be_hw_params_fixup; 271 272 dai = 273 dai_props->codec_dai = &priv->dais[li->dais++]; 274 275 cconf = 276 dai_props->codec_conf = &priv->codec_conf[li->conf++]; 277 278 ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL); 279 if (ret < 0) 280 return ret; 281 282 ret = asoc_simple_card_parse_clk_codec(dev, np, dai_link, dai); 283 if (ret < 0) 284 return ret; 285 286 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 287 "be.%s", 288 codecs->dai_name); 289 if (ret < 0) 290 return ret; 291 292 /* check "prefix" from top node */ 293 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 294 PREFIX "prefix"); 295 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 296 "prefix"); 297 snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node, 298 "prefix"); 299 } 300 301 simple_get_conversion(dev, np, &dai_props->adata); 302 303 asoc_simple_card_canonicalize_platform(dai_link); 304 305 ret = asoc_simple_card_of_parse_tdm(np, dai); 306 if (ret) 307 return ret; 308 309 snprintf(prop, sizeof(prop), "%smclk-fs", prefix); 310 of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); 311 of_property_read_u32(node, prop, &dai_props->mclk_fs); 312 of_property_read_u32(np, prop, &dai_props->mclk_fs); 313 314 ret = asoc_simple_card_parse_daifmt(dev, node, codec, 315 prefix, &dai_link->dai_fmt); 316 if (ret < 0) 317 return ret; 318 319 dai_link->dpcm_playback = 1; 320 dai_link->dpcm_capture = 1; 321 dai_link->ops = &simple_ops; 322 dai_link->init = simple_dai_init; 323 324 return 0; 325 } 326 327 static int simple_dai_link_of(struct simple_priv *priv, 328 struct device_node *np, 329 struct device_node *codec, 330 struct link_info *li, 331 bool is_top) 332 { 333 struct device *dev = simple_priv_to_dev(priv); 334 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 335 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 336 struct asoc_simple_dai *cpu_dai; 337 struct asoc_simple_dai *codec_dai; 338 struct device_node *top = dev->of_node; 339 struct device_node *cpu = NULL; 340 struct device_node *node = NULL; 341 struct device_node *plat = NULL; 342 char prop[128]; 343 char *prefix = ""; 344 int ret, single_cpu; 345 346 /* 347 * |CPU |Codec : turn 348 * CPU |Pass |return 349 * Codec |return|return 350 * np 351 */ 352 if (!li->cpu || np == codec) 353 return 0; 354 355 cpu = np; 356 node = of_get_parent(np); 357 li->link++; 358 359 dev_dbg(dev, "link_of (%pOF)\n", node); 360 361 /* For single DAI link & old style of DT node */ 362 if (is_top) 363 prefix = PREFIX; 364 365 snprintf(prop, sizeof(prop), "%splat", prefix); 366 plat = of_get_child_by_name(node, prop); 367 368 cpu_dai = 369 dai_props->cpu_dai = &priv->dais[li->dais++]; 370 codec_dai = 371 dai_props->codec_dai = &priv->dais[li->dais++]; 372 373 ret = asoc_simple_card_parse_daifmt(dev, node, codec, 374 prefix, &dai_link->dai_fmt); 375 if (ret < 0) 376 goto dai_link_of_err; 377 378 snprintf(prop, sizeof(prop), "%smclk-fs", prefix); 379 of_property_read_u32(top, PREFIX "mclk-fs", &dai_props->mclk_fs); 380 of_property_read_u32(node, prop, &dai_props->mclk_fs); 381 of_property_read_u32(cpu, prop, &dai_props->mclk_fs); 382 of_property_read_u32(codec, prop, &dai_props->mclk_fs); 383 384 ret = asoc_simple_card_parse_cpu(cpu, dai_link, 385 DAI, CELL, &single_cpu); 386 if (ret < 0) 387 goto dai_link_of_err; 388 389 ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL); 390 if (ret < 0) 391 goto dai_link_of_err; 392 393 ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL); 394 if (ret < 0) 395 goto dai_link_of_err; 396 397 ret = asoc_simple_card_of_parse_tdm(cpu, cpu_dai); 398 if (ret < 0) 399 goto dai_link_of_err; 400 401 ret = asoc_simple_card_of_parse_tdm(codec, codec_dai); 402 if (ret < 0) 403 goto dai_link_of_err; 404 405 ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai); 406 if (ret < 0) 407 goto dai_link_of_err; 408 409 ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai); 410 if (ret < 0) 411 goto dai_link_of_err; 412 413 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 414 "%s-%s", 415 dai_link->cpu_dai_name, 416 dai_link->codecs->dai_name); 417 if (ret < 0) 418 goto dai_link_of_err; 419 420 dai_link->ops = &simple_ops; 421 dai_link->init = simple_dai_init; 422 423 asoc_simple_card_canonicalize_cpu(dai_link, single_cpu); 424 asoc_simple_card_canonicalize_platform(dai_link); 425 426 dai_link_of_err: 427 of_node_put(plat); 428 of_node_put(node); 429 430 return ret; 431 } 432 433 static int simple_for_each_link(struct simple_priv *priv, 434 struct link_info *li, 435 int (*func_noml)(struct simple_priv *priv, 436 struct device_node *np, 437 struct device_node *codec, 438 struct link_info *li, bool is_top), 439 int (*func_dpcm)(struct simple_priv *priv, 440 struct device_node *np, 441 struct device_node *codec, 442 struct link_info *li, bool is_top)) 443 { 444 struct device *dev = simple_priv_to_dev(priv); 445 struct device_node *top = dev->of_node; 446 struct device_node *node; 447 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev); 448 bool is_top = 0; 449 int ret = 0; 450 451 /* Check if it has dai-link */ 452 node = of_get_child_by_name(top, PREFIX "dai-link"); 453 if (!node) { 454 node = of_node_get(top); 455 is_top = 1; 456 } 457 458 /* loop for all dai-link */ 459 do { 460 struct asoc_simple_card_data adata; 461 struct device_node *codec; 462 struct device_node *np; 463 int num = of_get_child_count(node); 464 465 /* get codec */ 466 codec = of_get_child_by_name(node, is_top ? 467 PREFIX "codec" : "codec"); 468 if (!codec) { 469 ret = -ENODEV; 470 goto error; 471 } 472 473 of_node_put(codec); 474 475 /* get convert-xxx property */ 476 memset(&adata, 0, sizeof(adata)); 477 for_each_child_of_node(node, np) 478 simple_get_conversion(dev, np, &adata); 479 480 /* loop for all CPU/Codec node */ 481 for_each_child_of_node(node, np) { 482 /* 483 * It is DPCM 484 * if it has many CPUs, 485 * or has convert-xxx property 486 */ 487 if (dpcm_selectable && 488 (num > 2 || 489 adata.convert_rate || adata.convert_channels)) 490 ret = func_dpcm(priv, np, codec, li, is_top); 491 /* else normal sound */ 492 else 493 ret = func_noml(priv, np, codec, li, is_top); 494 495 if (ret < 0) { 496 of_node_put(np); 497 goto error; 498 } 499 } 500 501 node = of_get_next_child(top, node); 502 } while (!is_top && node); 503 504 error: 505 of_node_put(node); 506 return ret; 507 } 508 509 static int simple_parse_aux_devs(struct device_node *node, 510 struct simple_priv *priv) 511 { 512 struct device *dev = simple_priv_to_dev(priv); 513 struct device_node *aux_node; 514 struct snd_soc_card *card = simple_priv_to_card(priv); 515 int i, n, len; 516 517 if (!of_find_property(node, PREFIX "aux-devs", &len)) 518 return 0; /* Ok to have no aux-devs */ 519 520 n = len / sizeof(__be32); 521 if (n <= 0) 522 return -EINVAL; 523 524 card->aux_dev = devm_kcalloc(dev, 525 n, sizeof(*card->aux_dev), GFP_KERNEL); 526 if (!card->aux_dev) 527 return -ENOMEM; 528 529 for (i = 0; i < n; i++) { 530 aux_node = of_parse_phandle(node, PREFIX "aux-devs", i); 531 if (!aux_node) 532 return -EINVAL; 533 card->aux_dev[i].codec_of_node = aux_node; 534 } 535 536 card->num_aux_devs = n; 537 return 0; 538 } 539 540 static int simple_parse_of(struct simple_priv *priv) 541 { 542 struct device *dev = simple_priv_to_dev(priv); 543 struct device_node *top = dev->of_node; 544 struct snd_soc_card *card = simple_priv_to_card(priv); 545 struct link_info li; 546 int ret; 547 548 if (!top) 549 return -EINVAL; 550 551 ret = asoc_simple_card_of_parse_widgets(card, PREFIX); 552 if (ret < 0) 553 return ret; 554 555 ret = asoc_simple_card_of_parse_routing(card, PREFIX); 556 if (ret < 0) 557 return ret; 558 559 /* Single/Muti DAI link(s) & New style of DT node */ 560 memset(&li, 0, sizeof(li)); 561 for (li.cpu = 1; li.cpu >= 0; li.cpu--) { 562 /* 563 * Detect all CPU first, and Detect all Codec 2nd. 564 * 565 * In Normal sound case, all DAIs are detected 566 * as "CPU-Codec". 567 * 568 * In DPCM sound case, 569 * all CPUs are detected as "CPU-dummy", and 570 * all Codecs are detected as "dummy-Codec". 571 * To avoid random sub-device numbering, 572 * detect "dummy-Codec" in last; 573 */ 574 ret = simple_for_each_link(priv, &li, 575 simple_dai_link_of, 576 simple_dai_link_of_dpcm); 577 if (ret < 0) 578 return ret; 579 } 580 581 ret = asoc_simple_card_parse_card_name(card, PREFIX); 582 if (ret < 0) 583 return ret; 584 585 ret = simple_parse_aux_devs(top, priv); 586 587 return ret; 588 } 589 590 static int simple_count_noml(struct simple_priv *priv, 591 struct device_node *np, 592 struct device_node *codec, 593 struct link_info *li, bool is_top) 594 { 595 li->dais++; /* CPU or Codec */ 596 if (np != codec) 597 li->link++; /* CPU-Codec */ 598 599 return 0; 600 } 601 602 static int simple_count_dpcm(struct simple_priv *priv, 603 struct device_node *np, 604 struct device_node *codec, 605 struct link_info *li, bool is_top) 606 { 607 li->dais++; /* CPU or Codec */ 608 li->link++; /* CPU-dummy or dummy-Codec */ 609 if (np == codec) 610 li->conf++; 611 612 return 0; 613 } 614 615 static void simple_get_dais_count(struct simple_priv *priv, 616 struct link_info *li) 617 { 618 struct device *dev = simple_priv_to_dev(priv); 619 struct device_node *top = dev->of_node; 620 621 /* 622 * link_num : number of links. 623 * CPU-Codec / CPU-dummy / dummy-Codec 624 * dais_num : number of DAIs 625 * ccnf_num : number of codec_conf 626 * same number for "dummy-Codec" 627 * 628 * ex1) 629 * CPU0 --- Codec0 link : 5 630 * CPU1 --- Codec1 dais : 7 631 * CPU2 -/ ccnf : 1 632 * CPU3 --- Codec2 633 * 634 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 635 * => 7 DAIs = 4xCPU + 3xCodec 636 * => 1 ccnf = 1xdummy-Codec 637 * 638 * ex2) 639 * CPU0 --- Codec0 link : 5 640 * CPU1 --- Codec1 dais : 6 641 * CPU2 -/ ccnf : 1 642 * CPU3 -/ 643 * 644 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 645 * => 6 DAIs = 4xCPU + 2xCodec 646 * => 1 ccnf = 1xdummy-Codec 647 * 648 * ex3) 649 * CPU0 --- Codec0 link : 6 650 * CPU1 -/ dais : 6 651 * CPU2 --- Codec1 ccnf : 2 652 * CPU3 -/ 653 * 654 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 655 * => 6 DAIs = 4xCPU + 2xCodec 656 * => 2 ccnf = 2xdummy-Codec 657 * 658 * ex4) 659 * CPU0 --- Codec0 (convert-rate) link : 3 660 * CPU1 --- Codec1 dais : 4 661 * ccnf : 1 662 * 663 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 664 * => 4 DAIs = 2xCPU + 2xCodec 665 * => 1 ccnf = 1xdummy-Codec 666 */ 667 if (!top) { 668 li->link = 1; 669 li->dais = 2; 670 li->conf = 0; 671 return; 672 } 673 674 simple_for_each_link(priv, li, 675 simple_count_noml, 676 simple_count_dpcm); 677 678 dev_dbg(dev, "link %d, dais %d, ccnf %d\n", 679 li->link, li->dais, li->conf); 680 } 681 682 static int simple_soc_probe(struct snd_soc_card *card) 683 { 684 struct simple_priv *priv = snd_soc_card_get_drvdata(card); 685 int ret; 686 687 ret = asoc_simple_card_init_hp(card, &priv->hp_jack, PREFIX); 688 if (ret < 0) 689 return ret; 690 691 ret = asoc_simple_card_init_mic(card, &priv->mic_jack, PREFIX); 692 if (ret < 0) 693 return ret; 694 695 return 0; 696 } 697 698 static int simple_probe(struct platform_device *pdev) 699 { 700 struct simple_priv *priv; 701 struct snd_soc_dai_link *dai_link; 702 struct simple_dai_props *dai_props; 703 struct asoc_simple_dai *dais; 704 struct device *dev = &pdev->dev; 705 struct device_node *np = dev->of_node; 706 struct snd_soc_card *card; 707 struct snd_soc_codec_conf *cconf; 708 struct link_info li; 709 int ret, i; 710 711 /* Allocate the private data and the DAI link array */ 712 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 713 if (!priv) 714 return -ENOMEM; 715 716 card = simple_priv_to_card(priv); 717 card->owner = THIS_MODULE; 718 card->dev = dev; 719 card->probe = simple_soc_probe; 720 721 memset(&li, 0, sizeof(li)); 722 simple_get_dais_count(priv, &li); 723 if (!li.link || !li.dais) 724 return -EINVAL; 725 726 dai_props = devm_kcalloc(dev, li.link, sizeof(*dai_props), GFP_KERNEL); 727 dai_link = devm_kcalloc(dev, li.link, sizeof(*dai_link), GFP_KERNEL); 728 dais = devm_kcalloc(dev, li.dais, sizeof(*dais), GFP_KERNEL); 729 cconf = devm_kcalloc(dev, li.conf, sizeof(*cconf), GFP_KERNEL); 730 if (!dai_props || !dai_link || !dais) 731 return -ENOMEM; 732 733 /* 734 * Use snd_soc_dai_link_component instead of legacy style 735 * It is codec only. but cpu/platform will be supported in the future. 736 * see 737 * soc-core.c :: snd_soc_init_multicodec() 738 */ 739 for (i = 0; i < li.link; i++) { 740 dai_link[i].codecs = &dai_props[i].codecs; 741 dai_link[i].num_codecs = 1; 742 dai_link[i].platforms = &dai_props[i].platforms; 743 dai_link[i].num_platforms = 1; 744 } 745 746 priv->dai_props = dai_props; 747 priv->dai_link = dai_link; 748 priv->dais = dais; 749 priv->codec_conf = cconf; 750 751 card->dai_link = priv->dai_link; 752 card->num_links = li.link; 753 card->codec_conf = cconf; 754 card->num_configs = li.conf; 755 756 if (np && of_device_is_available(np)) { 757 758 ret = simple_parse_of(priv); 759 if (ret < 0) { 760 if (ret != -EPROBE_DEFER) 761 dev_err(dev, "parse error %d\n", ret); 762 goto err; 763 } 764 765 } else { 766 struct asoc_simple_card_info *cinfo; 767 struct snd_soc_dai_link_component *codecs; 768 struct snd_soc_dai_link_component *platform; 769 int dai_idx = 0; 770 771 cinfo = dev->platform_data; 772 if (!cinfo) { 773 dev_err(dev, "no info for asoc-simple-card\n"); 774 return -EINVAL; 775 } 776 777 if (!cinfo->name || 778 !cinfo->codec_dai.name || 779 !cinfo->codec || 780 !cinfo->platform || 781 !cinfo->cpu_dai.name) { 782 dev_err(dev, "insufficient asoc_simple_card_info settings\n"); 783 return -EINVAL; 784 } 785 786 dai_props->cpu_dai = &priv->dais[dai_idx++]; 787 dai_props->codec_dai = &priv->dais[dai_idx++]; 788 789 codecs = dai_link->codecs; 790 codecs->name = cinfo->codec; 791 codecs->dai_name = cinfo->codec_dai.name; 792 793 platform = dai_link->platforms; 794 platform->name = cinfo->platform; 795 796 card->name = (cinfo->card) ? cinfo->card : cinfo->name; 797 dai_link->name = cinfo->name; 798 dai_link->stream_name = cinfo->name; 799 dai_link->cpu_dai_name = cinfo->cpu_dai.name; 800 dai_link->dai_fmt = cinfo->daifmt; 801 dai_link->init = simple_dai_init; 802 memcpy(priv->dai_props->cpu_dai, &cinfo->cpu_dai, 803 sizeof(*priv->dai_props->cpu_dai)); 804 memcpy(priv->dai_props->codec_dai, &cinfo->codec_dai, 805 sizeof(*priv->dai_props->codec_dai)); 806 } 807 808 snd_soc_card_set_drvdata(card, priv); 809 810 ret = devm_snd_soc_register_card(dev, card); 811 if (ret < 0) 812 goto err; 813 814 return 0; 815 err: 816 asoc_simple_card_clean_reference(card); 817 818 return ret; 819 } 820 821 static int simple_remove(struct platform_device *pdev) 822 { 823 struct snd_soc_card *card = platform_get_drvdata(pdev); 824 825 return asoc_simple_card_clean_reference(card); 826 } 827 828 static const struct of_device_id simple_of_match[] = { 829 { .compatible = "simple-audio-card", }, 830 { .compatible = "simple-scu-audio-card", 831 .data = (void *)DPCM_SELECTABLE }, 832 {}, 833 }; 834 MODULE_DEVICE_TABLE(of, simple_of_match); 835 836 static struct platform_driver asoc_simple_card = { 837 .driver = { 838 .name = "asoc-simple-card", 839 .pm = &snd_soc_pm_ops, 840 .of_match_table = simple_of_match, 841 }, 842 .probe = simple_probe, 843 .remove = simple_remove, 844 }; 845 846 module_platform_driver(asoc_simple_card); 847 848 MODULE_ALIAS("platform:asoc-simple-card"); 849 MODULE_LICENSE("GPL v2"); 850 MODULE_DESCRIPTION("ASoC Simple Sound Card"); 851 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 852