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/clk.h> 11 #include <linux/device.h> 12 #include <linux/gpio.h> 13 #include <linux/gpio/consumer.h> 14 #include <linux/module.h> 15 #include <linux/of.h> 16 #include <linux/of_device.h> 17 #include <linux/of_gpio.h> 18 #include <linux/of_graph.h> 19 #include <linux/platform_device.h> 20 #include <linux/string.h> 21 #include <sound/simple_card_utils.h> 22 23 struct graph_priv { 24 struct snd_soc_card snd_card; 25 struct graph_dai_props { 26 struct asoc_simple_dai *cpu_dai; 27 struct asoc_simple_dai *codec_dai; 28 struct snd_soc_dai_link_component codecs; /* single codec */ 29 struct snd_soc_dai_link_component platforms; 30 struct asoc_simple_card_data adata; 31 struct snd_soc_codec_conf *codec_conf; 32 unsigned int mclk_fs; 33 } *dai_props; 34 struct asoc_simple_jack hp_jack; 35 struct asoc_simple_jack mic_jack; 36 struct snd_soc_dai_link *dai_link; 37 struct asoc_simple_dai *dais; 38 struct snd_soc_codec_conf *codec_conf; 39 struct gpio_desc *pa_gpio; 40 }; 41 42 struct link_info { 43 int dais; /* number of dai */ 44 int link; /* number of link */ 45 int conf; /* number of codec_conf */ 46 int cpu; /* turn for CPU / Codec */ 47 }; 48 49 #define graph_priv_to_card(priv) (&(priv)->snd_card) 50 #define graph_priv_to_props(priv, i) ((priv)->dai_props + (i)) 51 #define graph_priv_to_dev(priv) (graph_priv_to_card(priv)->dev) 52 #define graph_priv_to_link(priv, i) (graph_priv_to_card(priv)->dai_link + (i)) 53 54 #define PREFIX "audio-graph-card," 55 56 static int graph_outdrv_event(struct snd_soc_dapm_widget *w, 57 struct snd_kcontrol *kcontrol, 58 int event) 59 { 60 struct snd_soc_dapm_context *dapm = w->dapm; 61 struct graph_priv *priv = snd_soc_card_get_drvdata(dapm->card); 62 63 switch (event) { 64 case SND_SOC_DAPM_POST_PMU: 65 gpiod_set_value_cansleep(priv->pa_gpio, 1); 66 break; 67 case SND_SOC_DAPM_PRE_PMD: 68 gpiod_set_value_cansleep(priv->pa_gpio, 0); 69 break; 70 default: 71 return -EINVAL; 72 } 73 74 return 0; 75 } 76 77 static const struct snd_soc_dapm_widget graph_dapm_widgets[] = { 78 SND_SOC_DAPM_OUT_DRV_E("Amplifier", SND_SOC_NOPM, 79 0, 0, NULL, 0, graph_outdrv_event, 80 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 81 }; 82 83 static int graph_startup(struct snd_pcm_substream *substream) 84 { 85 struct snd_soc_pcm_runtime *rtd = substream->private_data; 86 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 87 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 88 int ret; 89 90 ret = asoc_simple_card_clk_enable(dai_props->cpu_dai); 91 if (ret) 92 return ret; 93 94 ret = asoc_simple_card_clk_enable(dai_props->codec_dai); 95 if (ret) 96 asoc_simple_card_clk_disable(dai_props->cpu_dai); 97 98 return ret; 99 } 100 101 static void graph_shutdown(struct snd_pcm_substream *substream) 102 { 103 struct snd_soc_pcm_runtime *rtd = substream->private_data; 104 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 105 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 106 107 asoc_simple_card_clk_disable(dai_props->cpu_dai); 108 109 asoc_simple_card_clk_disable(dai_props->codec_dai); 110 } 111 112 static int graph_hw_params(struct snd_pcm_substream *substream, 113 struct snd_pcm_hw_params *params) 114 { 115 struct snd_soc_pcm_runtime *rtd = substream->private_data; 116 struct snd_soc_dai *codec_dai = rtd->codec_dai; 117 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 118 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 119 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 120 unsigned int mclk, mclk_fs = 0; 121 int ret = 0; 122 123 if (dai_props->mclk_fs) 124 mclk_fs = dai_props->mclk_fs; 125 126 if (mclk_fs) { 127 mclk = params_rate(params) * mclk_fs; 128 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 129 SND_SOC_CLOCK_IN); 130 if (ret && ret != -ENOTSUPP) 131 goto err; 132 133 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 134 SND_SOC_CLOCK_OUT); 135 if (ret && ret != -ENOTSUPP) 136 goto err; 137 } 138 return 0; 139 err: 140 return ret; 141 } 142 143 static const struct snd_soc_ops graph_ops = { 144 .startup = graph_startup, 145 .shutdown = graph_shutdown, 146 .hw_params = graph_hw_params, 147 }; 148 149 static int graph_dai_init(struct snd_soc_pcm_runtime *rtd) 150 { 151 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 152 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 153 int ret = 0; 154 155 ret = asoc_simple_card_init_dai(rtd->codec_dai, 156 dai_props->codec_dai); 157 if (ret < 0) 158 return ret; 159 160 ret = asoc_simple_card_init_dai(rtd->cpu_dai, 161 dai_props->cpu_dai); 162 if (ret < 0) 163 return ret; 164 165 return 0; 166 } 167 168 static int graph_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 169 struct snd_pcm_hw_params *params) 170 { 171 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 172 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 173 174 asoc_simple_card_convert_fixup(&dai_props->adata, params); 175 176 return 0; 177 } 178 179 static void graph_get_conversion(struct device *dev, 180 struct device_node *ep, 181 struct asoc_simple_card_data *adata) 182 { 183 struct device_node *top = dev->of_node; 184 struct device_node *port = of_get_parent(ep); 185 struct device_node *ports = of_get_parent(port); 186 struct device_node *node = of_graph_get_port_parent(ep); 187 188 asoc_simple_card_parse_convert(dev, top, NULL, adata); 189 asoc_simple_card_parse_convert(dev, node, PREFIX, adata); 190 asoc_simple_card_parse_convert(dev, ports, NULL, adata); 191 asoc_simple_card_parse_convert(dev, port, NULL, adata); 192 asoc_simple_card_parse_convert(dev, ep, NULL, adata); 193 } 194 195 static int graph_dai_link_of_dpcm(struct graph_priv *priv, 196 struct device_node *cpu_ep, 197 struct device_node *codec_ep, 198 struct link_info *li, 199 int dup_codec) 200 { 201 struct device *dev = graph_priv_to_dev(priv); 202 struct snd_soc_dai_link *dai_link = graph_priv_to_link(priv, li->link); 203 struct graph_dai_props *dai_props = graph_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 struct device_node *port; 207 struct device_node *ports; 208 struct device_node *node; 209 struct asoc_simple_dai *dai; 210 struct snd_soc_dai_link_component *codecs = dai_link->codecs; 211 int ret; 212 213 /* Do it all CPU endpoint, and 1st Codec endpoint */ 214 if (!li->cpu && dup_codec) 215 return 0; 216 217 port = of_get_parent(ep); 218 ports = of_get_parent(port); 219 node = of_graph_get_port_parent(ep); 220 221 li->link++; 222 223 dev_dbg(dev, "link_of DPCM (%pOF)\n", ep); 224 225 of_property_read_u32(top, "mclk-fs", &dai_props->mclk_fs); 226 of_property_read_u32(ports, "mclk-fs", &dai_props->mclk_fs); 227 of_property_read_u32(port, "mclk-fs", &dai_props->mclk_fs); 228 of_property_read_u32(ep, "mclk-fs", &dai_props->mclk_fs); 229 230 graph_get_conversion(dev, ep, &dai_props->adata); 231 232 of_node_put(ports); 233 of_node_put(port); 234 of_node_put(node); 235 236 if (li->cpu) { 237 238 /* BE is dummy */ 239 codecs->of_node = NULL; 240 codecs->dai_name = "snd-soc-dummy-dai"; 241 codecs->name = "snd-soc-dummy"; 242 243 /* FE settings */ 244 dai_link->dynamic = 1; 245 dai_link->dpcm_merged_format = 1; 246 247 dai = 248 dai_props->cpu_dai = &priv->dais[li->dais++]; 249 250 ret = asoc_simple_card_parse_graph_cpu(ep, dai_link); 251 if (ret) 252 return ret; 253 254 ret = asoc_simple_card_parse_clk_cpu(dev, ep, dai_link, dai); 255 if (ret < 0) 256 return ret; 257 258 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 259 "fe.%s", 260 dai_link->cpu_dai_name); 261 if (ret < 0) 262 return ret; 263 264 /* card->num_links includes Codec */ 265 asoc_simple_card_canonicalize_cpu(dai_link, 266 of_graph_get_endpoint_count(dai_link->cpu_of_node) == 1); 267 } else { 268 struct snd_soc_codec_conf *cconf; 269 270 /* FE is dummy */ 271 dai_link->cpu_of_node = NULL; 272 dai_link->cpu_dai_name = "snd-soc-dummy-dai"; 273 dai_link->cpu_name = "snd-soc-dummy"; 274 275 /* BE settings */ 276 dai_link->no_pcm = 1; 277 dai_link->be_hw_params_fixup = graph_be_hw_params_fixup; 278 279 dai = 280 dai_props->codec_dai = &priv->dais[li->dais++]; 281 282 cconf = 283 dai_props->codec_conf = &priv->codec_conf[li->conf++]; 284 285 ret = asoc_simple_card_parse_graph_codec(ep, dai_link); 286 if (ret < 0) 287 return ret; 288 289 ret = asoc_simple_card_parse_clk_codec(dev, ep, dai_link, dai); 290 if (ret < 0) 291 return ret; 292 293 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 294 "be.%s", 295 codecs->dai_name); 296 if (ret < 0) 297 return ret; 298 299 /* check "prefix" from top node */ 300 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 301 "prefix"); 302 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 303 PREFIX "prefix"); 304 snd_soc_of_parse_node_prefix(ports, cconf, codecs->of_node, 305 "prefix"); 306 snd_soc_of_parse_node_prefix(port, cconf, codecs->of_node, 307 "prefix"); 308 } 309 310 asoc_simple_card_canonicalize_platform(dai_link); 311 312 ret = asoc_simple_card_of_parse_tdm(ep, dai); 313 if (ret) 314 return ret; 315 316 ret = asoc_simple_card_parse_daifmt(dev, cpu_ep, codec_ep, 317 NULL, &dai_link->dai_fmt); 318 if (ret < 0) 319 return ret; 320 321 dai_link->dpcm_playback = 1; 322 dai_link->dpcm_capture = 1; 323 dai_link->ops = &graph_ops; 324 dai_link->init = graph_dai_init; 325 326 return 0; 327 } 328 329 static int graph_dai_link_of(struct graph_priv *priv, 330 struct device_node *cpu_ep, 331 struct device_node *codec_ep, 332 struct link_info *li) 333 { 334 struct device *dev = graph_priv_to_dev(priv); 335 struct snd_soc_dai_link *dai_link = graph_priv_to_link(priv, li->link); 336 struct graph_dai_props *dai_props = graph_priv_to_props(priv, li->link); 337 struct device_node *top = dev->of_node; 338 struct device_node *cpu_port; 339 struct device_node *cpu_ports; 340 struct device_node *codec_port; 341 struct device_node *codec_ports; 342 struct asoc_simple_dai *cpu_dai; 343 struct asoc_simple_dai *codec_dai; 344 int ret; 345 346 /* Do it only CPU turn */ 347 if (!li->cpu) 348 return 0; 349 350 cpu_port = of_get_parent(cpu_ep); 351 cpu_ports = of_get_parent(cpu_port); 352 codec_port = of_get_parent(codec_ep); 353 codec_ports = of_get_parent(codec_port); 354 355 dev_dbg(dev, "link_of (%pOF)\n", cpu_ep); 356 357 li->link++; 358 359 cpu_dai = 360 dai_props->cpu_dai = &priv->dais[li->dais++]; 361 codec_dai = 362 dai_props->codec_dai = &priv->dais[li->dais++]; 363 364 /* Factor to mclk, used in hw_params() */ 365 of_property_read_u32(top, "mclk-fs", &dai_props->mclk_fs); 366 of_property_read_u32(cpu_ports, "mclk-fs", &dai_props->mclk_fs); 367 of_property_read_u32(codec_ports, "mclk-fs", &dai_props->mclk_fs); 368 of_property_read_u32(cpu_port, "mclk-fs", &dai_props->mclk_fs); 369 of_property_read_u32(codec_port, "mclk-fs", &dai_props->mclk_fs); 370 of_property_read_u32(cpu_ep, "mclk-fs", &dai_props->mclk_fs); 371 of_property_read_u32(codec_ep, "mclk-fs", &dai_props->mclk_fs); 372 of_node_put(cpu_port); 373 of_node_put(cpu_ports); 374 of_node_put(codec_port); 375 of_node_put(codec_ports); 376 377 ret = asoc_simple_card_parse_daifmt(dev, cpu_ep, codec_ep, 378 NULL, &dai_link->dai_fmt); 379 if (ret < 0) 380 return ret; 381 382 ret = asoc_simple_card_parse_graph_cpu(cpu_ep, dai_link); 383 if (ret < 0) 384 return ret; 385 386 ret = asoc_simple_card_parse_graph_codec(codec_ep, dai_link); 387 if (ret < 0) 388 return ret; 389 390 ret = asoc_simple_card_of_parse_tdm(cpu_ep, cpu_dai); 391 if (ret < 0) 392 return ret; 393 394 ret = asoc_simple_card_of_parse_tdm(codec_ep, codec_dai); 395 if (ret < 0) 396 return ret; 397 398 ret = asoc_simple_card_parse_clk_cpu(dev, cpu_ep, dai_link, cpu_dai); 399 if (ret < 0) 400 return ret; 401 402 ret = asoc_simple_card_parse_clk_codec(dev, codec_ep, dai_link, codec_dai); 403 if (ret < 0) 404 return ret; 405 406 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 407 "%s-%s", 408 dai_link->cpu_dai_name, 409 dai_link->codecs->dai_name); 410 if (ret < 0) 411 return ret; 412 413 dai_link->ops = &graph_ops; 414 dai_link->init = graph_dai_init; 415 416 asoc_simple_card_canonicalize_platform(dai_link); 417 asoc_simple_card_canonicalize_cpu(dai_link, 418 of_graph_get_endpoint_count(dai_link->cpu_of_node) == 1); 419 420 return 0; 421 } 422 423 static int graph_for_each_link(struct graph_priv *priv, 424 struct link_info *li, 425 int (*func_noml)(struct graph_priv *priv, 426 struct device_node *cpu_ep, 427 struct device_node *codec_ep, 428 struct link_info *li), 429 int (*func_dpcm)(struct graph_priv *priv, 430 struct device_node *cpu_ep, 431 struct device_node *codec_ep, 432 struct link_info *li, int dup_codec)) 433 { 434 struct of_phandle_iterator it; 435 struct device *dev = graph_priv_to_dev(priv); 436 struct device_node *node = dev->of_node; 437 struct device_node *cpu_port; 438 struct device_node *cpu_ep; 439 struct device_node *codec_ep; 440 struct device_node *codec_port; 441 struct device_node *codec_port_old = NULL; 442 struct asoc_simple_card_data adata; 443 int rc, ret; 444 445 /* loop for all listed CPU port */ 446 of_for_each_phandle(&it, rc, node, "dais", NULL, 0) { 447 cpu_port = it.node; 448 cpu_ep = NULL; 449 450 /* loop for all CPU endpoint */ 451 while (1) { 452 cpu_ep = of_get_next_child(cpu_port, cpu_ep); 453 if (!cpu_ep) 454 break; 455 456 /* get codec */ 457 codec_ep = of_graph_get_remote_endpoint(cpu_ep); 458 codec_port = of_get_parent(codec_ep); 459 460 of_node_put(codec_ep); 461 of_node_put(codec_port); 462 463 /* get convert-xxx property */ 464 memset(&adata, 0, sizeof(adata)); 465 graph_get_conversion(dev, codec_ep, &adata); 466 graph_get_conversion(dev, cpu_ep, &adata); 467 468 /* 469 * It is DPCM 470 * if Codec port has many endpoints, 471 * or has convert-xxx property 472 */ 473 if ((of_get_child_count(codec_port) > 1) || 474 adata.convert_rate || adata.convert_channels) 475 ret = func_dpcm(priv, cpu_ep, codec_ep, li, 476 (codec_port_old == codec_port)); 477 /* else normal sound */ 478 else 479 ret = func_noml(priv, cpu_ep, codec_ep, li); 480 481 if (ret < 0) 482 return ret; 483 484 codec_port_old = codec_port; 485 } 486 } 487 488 return 0; 489 } 490 491 static int graph_parse_of(struct graph_priv *priv) 492 { 493 struct snd_soc_card *card = graph_priv_to_card(priv); 494 struct link_info li; 495 int ret; 496 497 ret = asoc_simple_card_of_parse_widgets(card, NULL); 498 if (ret < 0) 499 return ret; 500 501 ret = asoc_simple_card_of_parse_routing(card, NULL); 502 if (ret < 0) 503 return ret; 504 505 memset(&li, 0, sizeof(li)); 506 for (li.cpu = 1; li.cpu >= 0; li.cpu--) { 507 /* 508 * Detect all CPU first, and Detect all Codec 2nd. 509 * 510 * In Normal sound case, all DAIs are detected 511 * as "CPU-Codec". 512 * 513 * In DPCM sound case, 514 * all CPUs are detected as "CPU-dummy", and 515 * all Codecs are detected as "dummy-Codec". 516 * To avoid random sub-device numbering, 517 * detect "dummy-Codec" in last; 518 */ 519 ret = graph_for_each_link(priv, &li, 520 graph_dai_link_of, 521 graph_dai_link_of_dpcm); 522 if (ret < 0) 523 return ret; 524 } 525 526 return asoc_simple_card_parse_card_name(card, NULL); 527 } 528 529 static int graph_count_noml(struct graph_priv *priv, 530 struct device_node *cpu_ep, 531 struct device_node *codec_ep, 532 struct link_info *li) 533 { 534 struct device *dev = graph_priv_to_dev(priv); 535 536 li->link += 1; /* 1xCPU-Codec */ 537 li->dais += 2; /* 1xCPU + 1xCodec */ 538 539 dev_dbg(dev, "Count As Normal\n"); 540 541 return 0; 542 } 543 544 static int graph_count_dpcm(struct graph_priv *priv, 545 struct device_node *cpu_ep, 546 struct device_node *codec_ep, 547 struct link_info *li, 548 int dup_codec) 549 { 550 struct device *dev = graph_priv_to_dev(priv); 551 552 li->link++; /* 1xCPU-dummy */ 553 li->dais++; /* 1xCPU */ 554 555 if (!dup_codec) { 556 li->link++; /* 1xdummy-Codec */ 557 li->conf++; /* 1xdummy-Codec */ 558 li->dais++; /* 1xCodec */ 559 } 560 561 dev_dbg(dev, "Count As DPCM\n"); 562 563 return 0; 564 } 565 566 static void graph_get_dais_count(struct graph_priv *priv, 567 struct link_info *li) 568 { 569 struct device *dev = graph_priv_to_dev(priv); 570 571 /* 572 * link_num : number of links. 573 * CPU-Codec / CPU-dummy / dummy-Codec 574 * dais_num : number of DAIs 575 * ccnf_num : number of codec_conf 576 * same number for "dummy-Codec" 577 * 578 * ex1) 579 * CPU0 --- Codec0 link : 5 580 * CPU1 --- Codec1 dais : 7 581 * CPU2 -/ ccnf : 1 582 * CPU3 --- Codec2 583 * 584 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 585 * => 7 DAIs = 4xCPU + 3xCodec 586 * => 1 ccnf = 1xdummy-Codec 587 * 588 * ex2) 589 * CPU0 --- Codec0 link : 5 590 * CPU1 --- Codec1 dais : 6 591 * CPU2 -/ ccnf : 1 592 * CPU3 -/ 593 * 594 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 595 * => 6 DAIs = 4xCPU + 2xCodec 596 * => 1 ccnf = 1xdummy-Codec 597 * 598 * ex3) 599 * CPU0 --- Codec0 link : 6 600 * CPU1 -/ dais : 6 601 * CPU2 --- Codec1 ccnf : 2 602 * CPU3 -/ 603 * 604 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 605 * => 6 DAIs = 4xCPU + 2xCodec 606 * => 2 ccnf = 2xdummy-Codec 607 * 608 * ex4) 609 * CPU0 --- Codec0 (convert-rate) link : 3 610 * CPU1 --- Codec1 dais : 4 611 * ccnf : 1 612 * 613 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 614 * => 4 DAIs = 2xCPU + 2xCodec 615 * => 1 ccnf = 1xdummy-Codec 616 */ 617 graph_for_each_link(priv, li, 618 graph_count_noml, 619 graph_count_dpcm); 620 dev_dbg(dev, "link %d, dais %d, ccnf %d\n", 621 li->link, li->dais, li->conf); 622 } 623 624 static int graph_card_probe(struct snd_soc_card *card) 625 { 626 struct graph_priv *priv = snd_soc_card_get_drvdata(card); 627 int ret; 628 629 ret = asoc_simple_card_init_hp(card, &priv->hp_jack, NULL); 630 if (ret < 0) 631 return ret; 632 633 ret = asoc_simple_card_init_mic(card, &priv->mic_jack, NULL); 634 if (ret < 0) 635 return ret; 636 637 return 0; 638 } 639 640 static int graph_probe(struct platform_device *pdev) 641 { 642 struct graph_priv *priv; 643 struct snd_soc_dai_link *dai_link; 644 struct graph_dai_props *dai_props; 645 struct asoc_simple_dai *dais; 646 struct device *dev = &pdev->dev; 647 struct snd_soc_card *card; 648 struct snd_soc_codec_conf *cconf; 649 struct link_info li; 650 int ret, i; 651 652 /* Allocate the private data and the DAI link array */ 653 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 654 if (!priv) 655 return -ENOMEM; 656 657 card = graph_priv_to_card(priv); 658 card->owner = THIS_MODULE; 659 card->dev = dev; 660 card->dapm_widgets = graph_dapm_widgets; 661 card->num_dapm_widgets = ARRAY_SIZE(graph_dapm_widgets); 662 card->probe = graph_card_probe; 663 664 memset(&li, 0, sizeof(li)); 665 graph_get_dais_count(priv, &li); 666 if (!li.link || !li.dais) 667 return -EINVAL; 668 669 dai_props = devm_kcalloc(dev, li.link, sizeof(*dai_props), GFP_KERNEL); 670 dai_link = devm_kcalloc(dev, li.link, sizeof(*dai_link), GFP_KERNEL); 671 dais = devm_kcalloc(dev, li.dais, sizeof(*dais), GFP_KERNEL); 672 cconf = devm_kcalloc(dev, li.conf, sizeof(*cconf), GFP_KERNEL); 673 if (!dai_props || !dai_link || !dais) 674 return -ENOMEM; 675 676 /* 677 * Use snd_soc_dai_link_component instead of legacy style 678 * It is codec only. but cpu/platform will be supported in the future. 679 * see 680 * soc-core.c :: snd_soc_init_multicodec() 681 */ 682 for (i = 0; i < li.link; i++) { 683 dai_link[i].codecs = &dai_props[i].codecs; 684 dai_link[i].num_codecs = 1; 685 dai_link[i].platforms = &dai_props[i].platforms; 686 dai_link[i].num_platforms = 1; 687 } 688 689 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); 690 if (IS_ERR(priv->pa_gpio)) { 691 ret = PTR_ERR(priv->pa_gpio); 692 dev_err(dev, "failed to get amplifier gpio: %d\n", ret); 693 return ret; 694 } 695 696 priv->dai_props = dai_props; 697 priv->dai_link = dai_link; 698 priv->dais = dais; 699 priv->codec_conf = cconf; 700 701 card->dai_link = dai_link; 702 card->num_links = li.link; 703 card->codec_conf = cconf; 704 card->num_configs = li.conf; 705 706 ret = graph_parse_of(priv); 707 if (ret < 0) { 708 if (ret != -EPROBE_DEFER) 709 dev_err(dev, "parse error %d\n", ret); 710 goto err; 711 } 712 713 snd_soc_card_set_drvdata(card, priv); 714 715 ret = devm_snd_soc_register_card(dev, card); 716 if (ret < 0) 717 goto err; 718 719 return 0; 720 err: 721 asoc_simple_card_clean_reference(card); 722 723 return ret; 724 } 725 726 static int graph_remove(struct platform_device *pdev) 727 { 728 struct snd_soc_card *card = platform_get_drvdata(pdev); 729 730 return asoc_simple_card_clean_reference(card); 731 } 732 733 static const struct of_device_id graph_of_match[] = { 734 { .compatible = "audio-graph-card", }, 735 { .compatible = "audio-graph-scu-card", }, 736 {}, 737 }; 738 MODULE_DEVICE_TABLE(of, graph_of_match); 739 740 static struct platform_driver graph_card = { 741 .driver = { 742 .name = "asoc-audio-graph-card", 743 .pm = &snd_soc_pm_ops, 744 .of_match_table = graph_of_match, 745 }, 746 .probe = graph_probe, 747 .remove = graph_remove, 748 }; 749 module_platform_driver(graph_card); 750 751 MODULE_ALIAS("platform:asoc-audio-graph-card"); 752 MODULE_LICENSE("GPL v2"); 753 MODULE_DESCRIPTION("ASoC Audio Graph Sound Card"); 754 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 755