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 #define DPCM_SELECTABLE 1 24 25 struct graph_priv { 26 struct snd_soc_card snd_card; 27 struct graph_dai_props { 28 struct asoc_simple_dai *cpu_dai; 29 struct asoc_simple_dai *codec_dai; 30 struct snd_soc_dai_link_component codecs; /* single codec */ 31 struct snd_soc_dai_link_component platforms; 32 struct asoc_simple_card_data adata; 33 struct snd_soc_codec_conf *codec_conf; 34 unsigned int mclk_fs; 35 } *dai_props; 36 struct asoc_simple_jack hp_jack; 37 struct asoc_simple_jack mic_jack; 38 struct snd_soc_dai_link *dai_link; 39 struct asoc_simple_dai *dais; 40 struct snd_soc_codec_conf *codec_conf; 41 struct gpio_desc *pa_gpio; 42 }; 43 44 struct link_info { 45 int dais; /* number of dai */ 46 int link; /* number of link */ 47 int conf; /* number of codec_conf */ 48 int cpu; /* turn for CPU / Codec */ 49 }; 50 51 #define graph_priv_to_card(priv) (&(priv)->snd_card) 52 #define graph_priv_to_props(priv, i) ((priv)->dai_props + (i)) 53 #define graph_priv_to_dev(priv) (graph_priv_to_card(priv)->dev) 54 #define graph_priv_to_link(priv, i) (graph_priv_to_card(priv)->dai_link + (i)) 55 56 #define PREFIX "audio-graph-card," 57 58 static int graph_outdrv_event(struct snd_soc_dapm_widget *w, 59 struct snd_kcontrol *kcontrol, 60 int event) 61 { 62 struct snd_soc_dapm_context *dapm = w->dapm; 63 struct graph_priv *priv = snd_soc_card_get_drvdata(dapm->card); 64 65 switch (event) { 66 case SND_SOC_DAPM_POST_PMU: 67 gpiod_set_value_cansleep(priv->pa_gpio, 1); 68 break; 69 case SND_SOC_DAPM_PRE_PMD: 70 gpiod_set_value_cansleep(priv->pa_gpio, 0); 71 break; 72 default: 73 return -EINVAL; 74 } 75 76 return 0; 77 } 78 79 static const struct snd_soc_dapm_widget graph_dapm_widgets[] = { 80 SND_SOC_DAPM_OUT_DRV_E("Amplifier", SND_SOC_NOPM, 81 0, 0, NULL, 0, graph_outdrv_event, 82 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 83 }; 84 85 static int graph_startup(struct snd_pcm_substream *substream) 86 { 87 struct snd_soc_pcm_runtime *rtd = substream->private_data; 88 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 89 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 90 int ret; 91 92 ret = asoc_simple_card_clk_enable(dai_props->cpu_dai); 93 if (ret) 94 return ret; 95 96 ret = asoc_simple_card_clk_enable(dai_props->codec_dai); 97 if (ret) 98 asoc_simple_card_clk_disable(dai_props->cpu_dai); 99 100 return ret; 101 } 102 103 static void graph_shutdown(struct snd_pcm_substream *substream) 104 { 105 struct snd_soc_pcm_runtime *rtd = substream->private_data; 106 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 107 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 108 109 asoc_simple_card_clk_disable(dai_props->cpu_dai); 110 111 asoc_simple_card_clk_disable(dai_props->codec_dai); 112 } 113 114 static int graph_hw_params(struct snd_pcm_substream *substream, 115 struct snd_pcm_hw_params *params) 116 { 117 struct snd_soc_pcm_runtime *rtd = substream->private_data; 118 struct snd_soc_dai *codec_dai = rtd->codec_dai; 119 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 120 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 121 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 122 unsigned int mclk, mclk_fs = 0; 123 int ret = 0; 124 125 if (dai_props->mclk_fs) 126 mclk_fs = dai_props->mclk_fs; 127 128 if (mclk_fs) { 129 mclk = params_rate(params) * mclk_fs; 130 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 131 SND_SOC_CLOCK_IN); 132 if (ret && ret != -ENOTSUPP) 133 goto err; 134 135 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, 136 SND_SOC_CLOCK_OUT); 137 if (ret && ret != -ENOTSUPP) 138 goto err; 139 } 140 return 0; 141 err: 142 return ret; 143 } 144 145 static const struct snd_soc_ops graph_ops = { 146 .startup = graph_startup, 147 .shutdown = graph_shutdown, 148 .hw_params = graph_hw_params, 149 }; 150 151 static int graph_dai_init(struct snd_soc_pcm_runtime *rtd) 152 { 153 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 154 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 155 int ret = 0; 156 157 ret = asoc_simple_card_init_dai(rtd->codec_dai, 158 dai_props->codec_dai); 159 if (ret < 0) 160 return ret; 161 162 ret = asoc_simple_card_init_dai(rtd->cpu_dai, 163 dai_props->cpu_dai); 164 if (ret < 0) 165 return ret; 166 167 return 0; 168 } 169 170 static int graph_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 171 struct snd_pcm_hw_params *params) 172 { 173 struct graph_priv *priv = snd_soc_card_get_drvdata(rtd->card); 174 struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); 175 176 asoc_simple_card_convert_fixup(&dai_props->adata, params); 177 178 return 0; 179 } 180 181 static void graph_get_conversion(struct device *dev, 182 struct device_node *ep, 183 struct asoc_simple_card_data *adata) 184 { 185 struct device_node *top = dev->of_node; 186 struct device_node *port = of_get_parent(ep); 187 struct device_node *ports = of_get_parent(port); 188 struct device_node *node = of_graph_get_port_parent(ep); 189 190 asoc_simple_card_parse_convert(dev, top, NULL, adata); 191 asoc_simple_card_parse_convert(dev, node, PREFIX, adata); 192 asoc_simple_card_parse_convert(dev, ports, NULL, adata); 193 asoc_simple_card_parse_convert(dev, port, NULL, adata); 194 asoc_simple_card_parse_convert(dev, ep, NULL, adata); 195 } 196 197 static int graph_dai_link_of_dpcm(struct graph_priv *priv, 198 struct device_node *cpu_ep, 199 struct device_node *codec_ep, 200 struct link_info *li, 201 int dup_codec) 202 { 203 struct device *dev = graph_priv_to_dev(priv); 204 struct snd_soc_dai_link *dai_link = graph_priv_to_link(priv, li->link); 205 struct graph_dai_props *dai_props = graph_priv_to_props(priv, li->link); 206 struct device_node *top = dev->of_node; 207 struct device_node *ep = li->cpu ? cpu_ep : codec_ep; 208 struct device_node *port; 209 struct device_node *ports; 210 struct device_node *node; 211 struct asoc_simple_dai *dai; 212 struct snd_soc_dai_link_component *codecs = dai_link->codecs; 213 int ret; 214 215 /* Do it all CPU endpoint, and 1st Codec endpoint */ 216 if (!li->cpu && dup_codec) 217 return 0; 218 219 port = of_get_parent(ep); 220 ports = of_get_parent(port); 221 node = of_graph_get_port_parent(ep); 222 223 li->link++; 224 225 dev_dbg(dev, "link_of DPCM (%pOF)\n", ep); 226 227 of_property_read_u32(top, "mclk-fs", &dai_props->mclk_fs); 228 of_property_read_u32(ports, "mclk-fs", &dai_props->mclk_fs); 229 of_property_read_u32(port, "mclk-fs", &dai_props->mclk_fs); 230 of_property_read_u32(ep, "mclk-fs", &dai_props->mclk_fs); 231 232 graph_get_conversion(dev, ep, &dai_props->adata); 233 234 of_node_put(ports); 235 of_node_put(port); 236 of_node_put(node); 237 238 if (li->cpu) { 239 240 /* BE is dummy */ 241 codecs->of_node = NULL; 242 codecs->dai_name = "snd-soc-dummy-dai"; 243 codecs->name = "snd-soc-dummy"; 244 245 /* FE settings */ 246 dai_link->dynamic = 1; 247 dai_link->dpcm_merged_format = 1; 248 249 dai = 250 dai_props->cpu_dai = &priv->dais[li->dais++]; 251 252 ret = asoc_simple_card_parse_graph_cpu(ep, dai_link); 253 if (ret) 254 return ret; 255 256 ret = asoc_simple_card_parse_clk_cpu(dev, ep, dai_link, dai); 257 if (ret < 0) 258 return ret; 259 260 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 261 "fe.%s", 262 dai_link->cpu_dai_name); 263 if (ret < 0) 264 return ret; 265 266 /* card->num_links includes Codec */ 267 asoc_simple_card_canonicalize_cpu(dai_link, 268 of_graph_get_endpoint_count(dai_link->cpu_of_node) == 1); 269 } else { 270 struct snd_soc_codec_conf *cconf; 271 272 /* FE is dummy */ 273 dai_link->cpu_of_node = NULL; 274 dai_link->cpu_dai_name = "snd-soc-dummy-dai"; 275 dai_link->cpu_name = "snd-soc-dummy"; 276 277 /* BE settings */ 278 dai_link->no_pcm = 1; 279 dai_link->be_hw_params_fixup = graph_be_hw_params_fixup; 280 281 dai = 282 dai_props->codec_dai = &priv->dais[li->dais++]; 283 284 cconf = 285 dai_props->codec_conf = &priv->codec_conf[li->conf++]; 286 287 ret = asoc_simple_card_parse_graph_codec(ep, dai_link); 288 if (ret < 0) 289 return ret; 290 291 ret = asoc_simple_card_parse_clk_codec(dev, ep, dai_link, dai); 292 if (ret < 0) 293 return ret; 294 295 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 296 "be.%s", 297 codecs->dai_name); 298 if (ret < 0) 299 return ret; 300 301 /* check "prefix" from top node */ 302 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, 303 "prefix"); 304 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node, 305 PREFIX "prefix"); 306 snd_soc_of_parse_node_prefix(ports, cconf, codecs->of_node, 307 "prefix"); 308 snd_soc_of_parse_node_prefix(port, cconf, codecs->of_node, 309 "prefix"); 310 } 311 312 asoc_simple_card_canonicalize_platform(dai_link); 313 314 ret = asoc_simple_card_of_parse_tdm(ep, dai); 315 if (ret) 316 return ret; 317 318 ret = asoc_simple_card_parse_daifmt(dev, cpu_ep, codec_ep, 319 NULL, &dai_link->dai_fmt); 320 if (ret < 0) 321 return ret; 322 323 dai_link->dpcm_playback = 1; 324 dai_link->dpcm_capture = 1; 325 dai_link->ops = &graph_ops; 326 dai_link->init = graph_dai_init; 327 328 return 0; 329 } 330 331 static int graph_dai_link_of(struct graph_priv *priv, 332 struct device_node *cpu_ep, 333 struct device_node *codec_ep, 334 struct link_info *li) 335 { 336 struct device *dev = graph_priv_to_dev(priv); 337 struct snd_soc_dai_link *dai_link = graph_priv_to_link(priv, li->link); 338 struct graph_dai_props *dai_props = graph_priv_to_props(priv, li->link); 339 struct device_node *top = dev->of_node; 340 struct device_node *cpu_port; 341 struct device_node *cpu_ports; 342 struct device_node *codec_port; 343 struct device_node *codec_ports; 344 struct asoc_simple_dai *cpu_dai; 345 struct asoc_simple_dai *codec_dai; 346 int ret; 347 348 /* Do it only CPU turn */ 349 if (!li->cpu) 350 return 0; 351 352 cpu_port = of_get_parent(cpu_ep); 353 cpu_ports = of_get_parent(cpu_port); 354 codec_port = of_get_parent(codec_ep); 355 codec_ports = of_get_parent(codec_port); 356 357 dev_dbg(dev, "link_of (%pOF)\n", cpu_ep); 358 359 li->link++; 360 361 cpu_dai = 362 dai_props->cpu_dai = &priv->dais[li->dais++]; 363 codec_dai = 364 dai_props->codec_dai = &priv->dais[li->dais++]; 365 366 /* Factor to mclk, used in hw_params() */ 367 of_property_read_u32(top, "mclk-fs", &dai_props->mclk_fs); 368 of_property_read_u32(cpu_ports, "mclk-fs", &dai_props->mclk_fs); 369 of_property_read_u32(codec_ports, "mclk-fs", &dai_props->mclk_fs); 370 of_property_read_u32(cpu_port, "mclk-fs", &dai_props->mclk_fs); 371 of_property_read_u32(codec_port, "mclk-fs", &dai_props->mclk_fs); 372 of_property_read_u32(cpu_ep, "mclk-fs", &dai_props->mclk_fs); 373 of_property_read_u32(codec_ep, "mclk-fs", &dai_props->mclk_fs); 374 of_node_put(cpu_port); 375 of_node_put(cpu_ports); 376 of_node_put(codec_port); 377 of_node_put(codec_ports); 378 379 ret = asoc_simple_card_parse_daifmt(dev, cpu_ep, codec_ep, 380 NULL, &dai_link->dai_fmt); 381 if (ret < 0) 382 return ret; 383 384 ret = asoc_simple_card_parse_graph_cpu(cpu_ep, dai_link); 385 if (ret < 0) 386 return ret; 387 388 ret = asoc_simple_card_parse_graph_codec(codec_ep, dai_link); 389 if (ret < 0) 390 return ret; 391 392 ret = asoc_simple_card_of_parse_tdm(cpu_ep, cpu_dai); 393 if (ret < 0) 394 return ret; 395 396 ret = asoc_simple_card_of_parse_tdm(codec_ep, codec_dai); 397 if (ret < 0) 398 return ret; 399 400 ret = asoc_simple_card_parse_clk_cpu(dev, cpu_ep, dai_link, cpu_dai); 401 if (ret < 0) 402 return ret; 403 404 ret = asoc_simple_card_parse_clk_codec(dev, codec_ep, dai_link, codec_dai); 405 if (ret < 0) 406 return ret; 407 408 ret = asoc_simple_card_set_dailink_name(dev, dai_link, 409 "%s-%s", 410 dai_link->cpu_dai_name, 411 dai_link->codecs->dai_name); 412 if (ret < 0) 413 return ret; 414 415 dai_link->ops = &graph_ops; 416 dai_link->init = graph_dai_init; 417 418 asoc_simple_card_canonicalize_platform(dai_link); 419 asoc_simple_card_canonicalize_cpu(dai_link, 420 of_graph_get_endpoint_count(dai_link->cpu_of_node) == 1); 421 422 return 0; 423 } 424 425 static int graph_for_each_link(struct graph_priv *priv, 426 struct link_info *li, 427 int (*func_noml)(struct graph_priv *priv, 428 struct device_node *cpu_ep, 429 struct device_node *codec_ep, 430 struct link_info *li), 431 int (*func_dpcm)(struct graph_priv *priv, 432 struct device_node *cpu_ep, 433 struct device_node *codec_ep, 434 struct link_info *li, int dup_codec)) 435 { 436 struct of_phandle_iterator it; 437 struct device *dev = graph_priv_to_dev(priv); 438 struct device_node *node = dev->of_node; 439 struct device_node *cpu_port; 440 struct device_node *cpu_ep; 441 struct device_node *codec_ep; 442 struct device_node *codec_port; 443 struct device_node *codec_port_old = NULL; 444 struct asoc_simple_card_data adata; 445 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev); 446 int rc, ret; 447 448 /* loop for all listed CPU port */ 449 of_for_each_phandle(&it, rc, node, "dais", NULL, 0) { 450 cpu_port = it.node; 451 cpu_ep = NULL; 452 453 /* loop for all CPU endpoint */ 454 while (1) { 455 cpu_ep = of_get_next_child(cpu_port, cpu_ep); 456 if (!cpu_ep) 457 break; 458 459 /* get codec */ 460 codec_ep = of_graph_get_remote_endpoint(cpu_ep); 461 codec_port = of_get_parent(codec_ep); 462 463 of_node_put(codec_ep); 464 of_node_put(codec_port); 465 466 /* get convert-xxx property */ 467 memset(&adata, 0, sizeof(adata)); 468 graph_get_conversion(dev, codec_ep, &adata); 469 graph_get_conversion(dev, cpu_ep, &adata); 470 471 /* 472 * It is DPCM 473 * if Codec port has many endpoints, 474 * or has convert-xxx property 475 */ 476 if (dpcm_selectable && 477 ((of_get_child_count(codec_port) > 1) || 478 adata.convert_rate || adata.convert_channels)) 479 ret = func_dpcm(priv, cpu_ep, codec_ep, li, 480 (codec_port_old == codec_port)); 481 /* else normal sound */ 482 else 483 ret = func_noml(priv, cpu_ep, codec_ep, li); 484 485 if (ret < 0) 486 return ret; 487 488 codec_port_old = codec_port; 489 } 490 } 491 492 return 0; 493 } 494 495 static int graph_parse_of(struct graph_priv *priv) 496 { 497 struct snd_soc_card *card = graph_priv_to_card(priv); 498 struct link_info li; 499 int ret; 500 501 ret = asoc_simple_card_of_parse_widgets(card, NULL); 502 if (ret < 0) 503 return ret; 504 505 ret = asoc_simple_card_of_parse_routing(card, NULL); 506 if (ret < 0) 507 return ret; 508 509 memset(&li, 0, sizeof(li)); 510 for (li.cpu = 1; li.cpu >= 0; li.cpu--) { 511 /* 512 * Detect all CPU first, and Detect all Codec 2nd. 513 * 514 * In Normal sound case, all DAIs are detected 515 * as "CPU-Codec". 516 * 517 * In DPCM sound case, 518 * all CPUs are detected as "CPU-dummy", and 519 * all Codecs are detected as "dummy-Codec". 520 * To avoid random sub-device numbering, 521 * detect "dummy-Codec" in last; 522 */ 523 ret = graph_for_each_link(priv, &li, 524 graph_dai_link_of, 525 graph_dai_link_of_dpcm); 526 if (ret < 0) 527 return ret; 528 } 529 530 return asoc_simple_card_parse_card_name(card, NULL); 531 } 532 533 static int graph_count_noml(struct graph_priv *priv, 534 struct device_node *cpu_ep, 535 struct device_node *codec_ep, 536 struct link_info *li) 537 { 538 struct device *dev = graph_priv_to_dev(priv); 539 540 li->link += 1; /* 1xCPU-Codec */ 541 li->dais += 2; /* 1xCPU + 1xCodec */ 542 543 dev_dbg(dev, "Count As Normal\n"); 544 545 return 0; 546 } 547 548 static int graph_count_dpcm(struct graph_priv *priv, 549 struct device_node *cpu_ep, 550 struct device_node *codec_ep, 551 struct link_info *li, 552 int dup_codec) 553 { 554 struct device *dev = graph_priv_to_dev(priv); 555 556 li->link++; /* 1xCPU-dummy */ 557 li->dais++; /* 1xCPU */ 558 559 if (!dup_codec) { 560 li->link++; /* 1xdummy-Codec */ 561 li->conf++; /* 1xdummy-Codec */ 562 li->dais++; /* 1xCodec */ 563 } 564 565 dev_dbg(dev, "Count As DPCM\n"); 566 567 return 0; 568 } 569 570 static void graph_get_dais_count(struct graph_priv *priv, 571 struct link_info *li) 572 { 573 struct device *dev = graph_priv_to_dev(priv); 574 575 /* 576 * link_num : number of links. 577 * CPU-Codec / CPU-dummy / dummy-Codec 578 * dais_num : number of DAIs 579 * ccnf_num : number of codec_conf 580 * same number for "dummy-Codec" 581 * 582 * ex1) 583 * CPU0 --- Codec0 link : 5 584 * CPU1 --- Codec1 dais : 7 585 * CPU2 -/ ccnf : 1 586 * CPU3 --- Codec2 587 * 588 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec 589 * => 7 DAIs = 4xCPU + 3xCodec 590 * => 1 ccnf = 1xdummy-Codec 591 * 592 * ex2) 593 * CPU0 --- Codec0 link : 5 594 * CPU1 --- Codec1 dais : 6 595 * CPU2 -/ ccnf : 1 596 * CPU3 -/ 597 * 598 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec 599 * => 6 DAIs = 4xCPU + 2xCodec 600 * => 1 ccnf = 1xdummy-Codec 601 * 602 * ex3) 603 * CPU0 --- Codec0 link : 6 604 * CPU1 -/ dais : 6 605 * CPU2 --- Codec1 ccnf : 2 606 * CPU3 -/ 607 * 608 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec 609 * => 6 DAIs = 4xCPU + 2xCodec 610 * => 2 ccnf = 2xdummy-Codec 611 * 612 * ex4) 613 * CPU0 --- Codec0 (convert-rate) link : 3 614 * CPU1 --- Codec1 dais : 4 615 * ccnf : 1 616 * 617 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec 618 * => 4 DAIs = 2xCPU + 2xCodec 619 * => 1 ccnf = 1xdummy-Codec 620 */ 621 graph_for_each_link(priv, li, 622 graph_count_noml, 623 graph_count_dpcm); 624 dev_dbg(dev, "link %d, dais %d, ccnf %d\n", 625 li->link, li->dais, li->conf); 626 } 627 628 static int graph_card_probe(struct snd_soc_card *card) 629 { 630 struct graph_priv *priv = snd_soc_card_get_drvdata(card); 631 int ret; 632 633 ret = asoc_simple_card_init_hp(card, &priv->hp_jack, NULL); 634 if (ret < 0) 635 return ret; 636 637 ret = asoc_simple_card_init_mic(card, &priv->mic_jack, NULL); 638 if (ret < 0) 639 return ret; 640 641 return 0; 642 } 643 644 static int graph_probe(struct platform_device *pdev) 645 { 646 struct graph_priv *priv; 647 struct snd_soc_dai_link *dai_link; 648 struct graph_dai_props *dai_props; 649 struct asoc_simple_dai *dais; 650 struct device *dev = &pdev->dev; 651 struct snd_soc_card *card; 652 struct snd_soc_codec_conf *cconf; 653 struct link_info li; 654 int ret, i; 655 656 /* Allocate the private data and the DAI link array */ 657 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 658 if (!priv) 659 return -ENOMEM; 660 661 card = graph_priv_to_card(priv); 662 card->owner = THIS_MODULE; 663 card->dev = dev; 664 card->dapm_widgets = graph_dapm_widgets; 665 card->num_dapm_widgets = ARRAY_SIZE(graph_dapm_widgets); 666 card->probe = graph_card_probe; 667 668 memset(&li, 0, sizeof(li)); 669 graph_get_dais_count(priv, &li); 670 if (!li.link || !li.dais) 671 return -EINVAL; 672 673 dai_props = devm_kcalloc(dev, li.link, sizeof(*dai_props), GFP_KERNEL); 674 dai_link = devm_kcalloc(dev, li.link, sizeof(*dai_link), GFP_KERNEL); 675 dais = devm_kcalloc(dev, li.dais, sizeof(*dais), GFP_KERNEL); 676 cconf = devm_kcalloc(dev, li.conf, sizeof(*cconf), GFP_KERNEL); 677 if (!dai_props || !dai_link || !dais) 678 return -ENOMEM; 679 680 /* 681 * Use snd_soc_dai_link_component instead of legacy style 682 * It is codec only. but cpu/platform will be supported in the future. 683 * see 684 * soc-core.c :: snd_soc_init_multicodec() 685 */ 686 for (i = 0; i < li.link; i++) { 687 dai_link[i].codecs = &dai_props[i].codecs; 688 dai_link[i].num_codecs = 1; 689 dai_link[i].platforms = &dai_props[i].platforms; 690 dai_link[i].num_platforms = 1; 691 } 692 693 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); 694 if (IS_ERR(priv->pa_gpio)) { 695 ret = PTR_ERR(priv->pa_gpio); 696 dev_err(dev, "failed to get amplifier gpio: %d\n", ret); 697 return ret; 698 } 699 700 priv->dai_props = dai_props; 701 priv->dai_link = dai_link; 702 priv->dais = dais; 703 priv->codec_conf = cconf; 704 705 card->dai_link = dai_link; 706 card->num_links = li.link; 707 card->codec_conf = cconf; 708 card->num_configs = li.conf; 709 710 ret = graph_parse_of(priv); 711 if (ret < 0) { 712 if (ret != -EPROBE_DEFER) 713 dev_err(dev, "parse error %d\n", ret); 714 goto err; 715 } 716 717 snd_soc_card_set_drvdata(card, priv); 718 719 ret = devm_snd_soc_register_card(dev, card); 720 if (ret < 0) 721 goto err; 722 723 return 0; 724 err: 725 asoc_simple_card_clean_reference(card); 726 727 return ret; 728 } 729 730 static int graph_remove(struct platform_device *pdev) 731 { 732 struct snd_soc_card *card = platform_get_drvdata(pdev); 733 734 return asoc_simple_card_clean_reference(card); 735 } 736 737 static const struct of_device_id graph_of_match[] = { 738 { .compatible = "audio-graph-card", }, 739 { .compatible = "audio-graph-scu-card", 740 .data = (void *)DPCM_SELECTABLE }, 741 {}, 742 }; 743 MODULE_DEVICE_TABLE(of, graph_of_match); 744 745 static struct platform_driver graph_card = { 746 .driver = { 747 .name = "asoc-audio-graph-card", 748 .pm = &snd_soc_pm_ops, 749 .of_match_table = graph_of_match, 750 }, 751 .probe = graph_probe, 752 .remove = graph_remove, 753 }; 754 module_platform_driver(graph_card); 755 756 MODULE_ALIAS("platform:asoc-audio-graph-card"); 757 MODULE_LICENSE("GPL v2"); 758 MODULE_DESCRIPTION("ASoC Audio Graph Sound Card"); 759 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 760