1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // ASoC Audio Graph Card2 support 4 // 5 // Copyright (C) 2020 Renesas Electronics Corp. 6 // Copyright (C) 2020 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7 // 8 // based on ${LINUX}/sound/soc/generic/audio-graph-card.c 9 #include <linux/clk.h> 10 #include <linux/device.h> 11 #include <linux/gpio/consumer.h> 12 #include <linux/module.h> 13 #include <linux/of.h> 14 #include <linux/of_graph.h> 15 #include <linux/platform_device.h> 16 #include <linux/string.h> 17 #include <sound/graph_card.h> 18 19 /************************************ 20 daifmt 21 ************************************ 22 ports { 23 format = "left_j"; 24 port@0 { 25 bitclock-master; 26 sample0: endpoint@0 { 27 frame-master; 28 }; 29 sample1: endpoint@1 { 30 format = "i2s"; 31 }; 32 }; 33 ... 34 }; 35 36 You can set daifmt at ports/port/endpoint. 37 It uses *latest* format, and *share* master settings. 38 In above case, 39 sample0: left_j, bitclock-master, frame-master 40 sample1: i2s, bitclock-master 41 42 If there was no settings, *Codec* will be 43 bitclock/frame provider as default. 44 see 45 graph_parse_daifmt(). 46 47 "format" property is no longer needed on DT if both CPU/Codec drivers are 48 supporting snd_soc_dai_ops :: .auto_selectable_formats. 49 see 50 snd_soc_runtime_get_dai_fmt() 51 52 sample driver 53 linux/sound/soc/renesas/rcar/core.c 54 linux/sound/soc/codecs/ak4613.c 55 linux/sound/soc/codecs/pcm3168a.c 56 linux/sound/soc/soc-utils.c 57 linux/sound/soc/generic/test-component.c 58 59 ************************************ 60 Normal Audio-Graph 61 ************************************ 62 63 CPU <---> Codec 64 65 sound { 66 compatible = "audio-graph-card2"; 67 links = <&cpu>; 68 }; 69 70 CPU { 71 cpu: port { 72 bitclock-master; 73 frame-master; 74 cpu_ep: endpoint { remote-endpoint = <&codec_ep>; }; }; 75 }; 76 77 Codec { 78 port { codec_ep: endpoint { remote-endpoint = <&cpu_ep>; }; }; 79 }; 80 81 ************************************ 82 Multi-CPU/Codec 83 ************************************ 84 85 It has link connection part (= X,x) and list part (= A,B,a,b). 86 "links" is connection part of CPU side (= @). 87 88 +----+ +---+ 89 CPU1 --|A X| <-@----> |x a|-- Codec1 90 CPU2 --|B | | b|-- Codec2 91 +----+ +---+ 92 93 sound { 94 compatible = "audio-graph-card2"; 95 96 (@) links = <&mcpu>; 97 98 multi { 99 ports@0 { 100 (@) mcpu: port@0 { mcpu0_ep: endpoint { remote-endpoint = <&mcodec0_ep>; }; }; // (X) to pair 101 port@1 { mcpu1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; }; // (A) Multi Element 102 port@2 { mcpu2_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; }; // (B) Multi Element 103 }; 104 ports@1 { 105 port@0 { mcodec0_ep: endpoint { remote-endpoint = <&mcpu0_ep>; }; }; // (x) to pair 106 port@1 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; // (a) Multi Element 107 port@2 { mcodec2_ep: endpoint { remote-endpoint = <&codec2_ep>; }; }; // (b) Multi Element 108 }; 109 }; 110 }; 111 112 CPU { 113 ports { 114 bitclock-master; 115 frame-master; 116 port@0 { cpu1_ep: endpoint { remote-endpoint = <&mcpu1_ep>; }; }; 117 port@1 { cpu2_ep: endpoint { remote-endpoint = <&mcpu2_ep>; }; }; 118 }; 119 }; 120 121 Codec { 122 ports { 123 port@0 { codec1_ep: endpoint { remote-endpoint = <&mcodec1_ep>; }; }; 124 port@1 { codec2_ep: endpoint { remote-endpoint = <&mcodec2_ep>; }; }; 125 }; 126 }; 127 128 ************************************ 129 DPCM 130 ************************************ 131 132 DSP 133 ************ 134 PCM0 <--> * fe0 be0 * <--> DAI0: Codec Headset 135 PCM1 <--> * fe1 be1 * <--> DAI1: Codec Speakers 136 PCM2 <--> * fe2 be2 * <--> DAI2: MODEM 137 PCM3 <--> * fe3 be3 * <--> DAI3: BT 138 * be4 * <--> DAI4: DMIC 139 * be5 * <--> DAI5: FM 140 ************ 141 142 sound { 143 compatible = "audio-graph-card2"; 144 145 // indicate routing 146 routing = "xxx Playback", "xxx Playback", 147 "xxx Playback", "xxx Playback", 148 "xxx Playback", "xxx Playback"; 149 150 // indicate all Front-End, Back-End 151 links = <&fe0, &fe1, ..., 152 &be0, &be1, ...>; 153 154 dpcm { 155 // Front-End 156 ports@0 { 157 fe0: port@0 { fe0_ep: endpoint { remote-endpoint = <&pcm0_ep>; }; }; 158 fe1: port@1 { fe1_ep: endpoint { remote-endpoint = <&pcm1_ep>; }; }; 159 ... 160 }; 161 // Back-End 162 ports@1 { 163 be0: port@0 { be0_ep: endpoint { remote-endpoint = <&dai0_ep>; }; }; 164 be1: port@1 { be1_ep: endpoint { remote-endpoint = <&dai1_ep>; }; }; 165 ... 166 }; 167 }; 168 }; 169 170 CPU { 171 ports { 172 bitclock-master; 173 frame-master; 174 port@0 { pcm0_ep: endpoint { remote-endpoint = <&fe0_ep>; }; }; 175 port@1 { pcm1_ep: endpoint { remote-endpoint = <&fe1_ep>; }; }; 176 ... 177 }; 178 }; 179 180 Codec { 181 ports { 182 port@0 { dai0_ep: endpoint { remote-endpoint = <&be0_ep>; }; }; 183 port@1 { dai1_ep: endpoint { remote-endpoint = <&be1_ep>; }; }; 184 ... 185 }; 186 }; 187 188 ************************************ 189 Codec to Codec 190 ************************************ 191 192 +--+ 193 | |<-- Codec0 <- IN 194 | |--> Codec1 -> OUT 195 +--+ 196 197 sound { 198 compatible = "audio-graph-card2"; 199 200 routing = "OUT" ,"DAI1 Playback", 201 "DAI0 Capture", "IN"; 202 203 links = <&c2c>; 204 205 codec2codec { 206 ports { 207 rate = <48000>; 208 c2c: port@0 { c2cf_ep: endpoint { remote-endpoint = <&codec0_ep>; }; }; 209 port@1 { c2cb_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; 210 }; 211 }; 212 213 Codec { 214 ports { 215 port@0 { 216 bitclock-master; 217 frame-master; 218 codec0_ep: endpoint { remote-endpoint = <&c2cf_ep>; }; }; 219 port@1 { codec1_ep: endpoint { remote-endpoint = <&c2cb_ep>; }; }; 220 }; 221 }; 222 223 */ 224 225 enum graph_type { 226 GRAPH_NORMAL, 227 GRAPH_DPCM, 228 GRAPH_C2C, 229 230 GRAPH_MULTI, /* don't use ! Use this only in __graph_get_type() */ 231 }; 232 233 #define GRAPH_NODENAME_MULTI "multi" 234 #define GRAPH_NODENAME_DPCM "dpcm" 235 #define GRAPH_NODENAME_C2C "codec2codec" 236 237 #define ep_to_port(ep) of_get_parent(ep) 238 static struct device_node *port_to_ports(struct device_node *port) 239 { 240 struct device_node *ports = of_get_parent(port); 241 242 if (!of_node_name_eq(ports, "ports")) { 243 of_node_put(ports); 244 return NULL; 245 } 246 return ports; 247 } 248 249 static enum graph_type __graph_get_type(struct device_node *lnk) 250 { 251 struct device_node *np, *parent_np; 252 enum graph_type ret; 253 254 /* 255 * target { 256 * ports { 257 * => lnk: port@0 { ... }; 258 * port@1 { ... }; 259 * }; 260 * }; 261 */ 262 np = of_get_parent(lnk); 263 if (of_node_name_eq(np, "ports")) { 264 parent_np = of_get_parent(np); 265 of_node_put(np); 266 np = parent_np; 267 } 268 269 if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) { 270 ret = GRAPH_MULTI; 271 fw_devlink_purge_absent_suppliers(&np->fwnode); 272 goto out_put; 273 } 274 275 if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) { 276 ret = GRAPH_DPCM; 277 fw_devlink_purge_absent_suppliers(&np->fwnode); 278 goto out_put; 279 } 280 281 if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) { 282 ret = GRAPH_C2C; 283 fw_devlink_purge_absent_suppliers(&np->fwnode); 284 goto out_put; 285 } 286 287 ret = GRAPH_NORMAL; 288 289 out_put: 290 of_node_put(np); 291 return ret; 292 293 } 294 295 static enum graph_type graph_get_type(struct simple_util_priv *priv, 296 struct device_node *lnk) 297 { 298 enum graph_type type = __graph_get_type(lnk); 299 300 /* GRAPH_MULTI here means GRAPH_NORMAL */ 301 if (type == GRAPH_MULTI) 302 type = GRAPH_NORMAL; 303 304 #ifdef DEBUG 305 { 306 struct device *dev = simple_priv_to_dev(priv); 307 const char *str = "Normal"; 308 309 switch (type) { 310 case GRAPH_DPCM: 311 if (graph_util_is_ports0(lnk)) 312 str = "DPCM Front-End"; 313 else 314 str = "DPCM Back-End"; 315 break; 316 case GRAPH_C2C: 317 str = "Codec2Codec"; 318 break; 319 default: 320 break; 321 } 322 323 dev_dbg(dev, "%pOF (%s)", lnk, str); 324 } 325 #endif 326 return type; 327 } 328 329 static int graph_lnk_is_multi(struct device_node *lnk) 330 { 331 return __graph_get_type(lnk) == GRAPH_MULTI; 332 } 333 334 static struct device_node *graph_get_next_multi_ep(struct device_node **port, int idx) 335 { 336 struct device_node *ports __free(device_node) = port_to_ports(*port); 337 struct device_node *rep = NULL; 338 339 /* 340 * multi { 341 * ports { 342 * => lnk: port@0 { ... }; // to pair 343 * port@1 { ep { ... = rep0 } }; // Multi Element 344 * port@2 { ep { ... = rep1 } }; // Multi Element 345 * ... 346 * }; 347 * }; 348 * 349 * xxx { 350 * port@0 { rep0 }; 351 * port@1 { rep1 }; 352 * }; 353 */ 354 355 /* 356 * Don't use of_graph_get_next_port() here 357 * 358 * In overlay case, "port" are not necessarily in order. So we need to use 359 * of_graph_get_port_by_id() instead 360 */ 361 of_node_put(*port); 362 363 *port = of_graph_get_port_by_id(ports, idx); 364 if (*port) { 365 struct device_node *ep __free(device_node) = of_graph_get_next_port_endpoint(*port, NULL); 366 367 rep = of_graph_get_remote_endpoint(ep); 368 } 369 370 return rep; 371 } 372 373 static const struct snd_soc_ops graph_ops = { 374 .startup = simple_util_startup, 375 .shutdown = simple_util_shutdown, 376 .hw_params = simple_util_hw_params, 377 }; 378 379 static void graph_parse_convert(struct device_node *ep, 380 struct simple_dai_props *props) 381 { 382 struct device_node *port __free(device_node) = ep_to_port(ep); 383 struct device_node *ports __free(device_node) = port_to_ports(port); 384 struct simple_util_data *adata = &props->adata; 385 386 simple_util_parse_convert(ports, NULL, adata); 387 simple_util_parse_convert(port, NULL, adata); 388 simple_util_parse_convert(ep, NULL, adata); 389 } 390 391 static int __graph_parse_node(struct simple_util_priv *priv, 392 enum graph_type gtype, 393 struct device_node *ep, 394 struct link_info *li, 395 int is_cpu, int idx) 396 { 397 struct device *dev = simple_priv_to_dev(priv); 398 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 399 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 400 struct snd_soc_dai_link_component *dlc; 401 struct simple_util_dai *dai; 402 int ret, is_single_links = 0; 403 404 if (is_cpu) { 405 dlc = snd_soc_link_to_cpu(dai_link, idx); 406 dai = simple_props_to_dai_cpu(dai_props, idx); 407 } else { 408 dlc = snd_soc_link_to_codec(dai_link, idx); 409 dai = simple_props_to_dai_codec(dai_props, idx); 410 } 411 412 ret = graph_util_parse_dai(dev, ep, dlc, &is_single_links); 413 if (ret < 0) 414 return ret; 415 416 ret = simple_util_parse_tdm(ep, dai); 417 if (ret < 0) 418 return ret; 419 420 ret = simple_util_parse_tdm_width_map(dev, ep, dai); 421 if (ret < 0) 422 return ret; 423 424 ret = simple_util_parse_clk(dev, ep, dai, dlc); 425 if (ret < 0) 426 return ret; 427 428 /* 429 * set DAI Name 430 */ 431 if (!dai_link->name) { 432 struct snd_soc_dai_link_component *cpus = dlc; 433 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx); 434 char *cpu_multi = ""; 435 char *codec_multi = ""; 436 437 if (dai_link->num_cpus > 1) 438 cpu_multi = "_multi"; 439 if (dai_link->num_codecs > 1) 440 codec_multi = "_multi"; 441 442 switch (gtype) { 443 case GRAPH_NORMAL: 444 /* run is_cpu only. see audio_graph2_link_normal() */ 445 if (is_cpu) 446 simple_util_set_dailink_name(dev, dai_link, "%s%s-%s%s", 447 cpus->dai_name, cpu_multi, 448 codecs->dai_name, codec_multi); 449 break; 450 case GRAPH_DPCM: 451 if (is_cpu) 452 simple_util_set_dailink_name(dev, dai_link, "fe.%pOFP.%s%s", 453 cpus->of_node, cpus->dai_name, cpu_multi); 454 else 455 simple_util_set_dailink_name(dev, dai_link, "be.%pOFP.%s%s", 456 codecs->of_node, codecs->dai_name, codec_multi); 457 break; 458 case GRAPH_C2C: 459 /* run is_cpu only. see audio_graph2_link_c2c() */ 460 if (is_cpu) 461 simple_util_set_dailink_name(dev, dai_link, "c2c.%s%s-%s%s", 462 cpus->dai_name, cpu_multi, 463 codecs->dai_name, codec_multi); 464 break; 465 default: 466 break; 467 } 468 } 469 470 /* 471 * Check "prefix" from top node 472 * if DPCM-BE case 473 */ 474 if (!is_cpu && gtype == GRAPH_DPCM) { 475 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx); 476 struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, idx); 477 struct device_node *rport __free(device_node) = ep_to_port(ep); 478 struct device_node *rports __free(device_node) = port_to_ports(rport); 479 480 snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix"); 481 snd_soc_of_parse_node_prefix(rport, cconf, codecs->of_node, "prefix"); 482 } 483 484 if (is_cpu) { 485 struct snd_soc_dai_link_component *cpus = dlc; 486 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, idx); 487 488 simple_util_canonicalize_cpu(cpus, is_single_links); 489 simple_util_canonicalize_platform(platforms, cpus); 490 } 491 492 return 0; 493 } 494 495 static int graph_parse_node_multi_nm(struct snd_soc_dai_link *dai_link, 496 int *nm_idx, int cpu_idx, 497 struct device_node *mcpu_port) 498 { 499 /* 500 * +---+ +---+ 501 * | X|<-@------->|x | 502 * | | | | 503 * cpu0 <--|A 1|<--------->|4 a|-> codec0 504 * cpu1 <--|B 2|<-----+--->|5 b|-> codec1 505 * cpu2 <--|C 3|<----/ +---+ 506 * +---+ 507 * 508 * multi { 509 * ports { 510 * port@0 { mcpu_top_ep {... = mcodec_ep; }; }; // (X) to pair 511 * <mcpu_port> port@1 { mcpu0_ep { ... = cpu0_ep; }; // (A) Multi Element 512 * mcpu0_ep_0 { ... = mcodec0_ep_0; }; }; // (1) connected Codec 513 * port@2 { mcpu1_ep { ... = cpu1_ep; }; // (B) Multi Element 514 * mcpu1_ep_0 { ... = mcodec1_ep_0; }; }; // (2) connected Codec 515 * port@3 { mcpu2_ep { ... = cpu2_ep; }; // (C) Multi Element 516 * mcpu2_ep_0 { ... = mcodec1_ep_1; }; }; // (3) connected Codec 517 * }; 518 * 519 * ports { 520 * port@0 { mcodec_top_ep {... = mcpu_ep; }; }; // (x) to pair 521 * <mcodec_port>port@1 { mcodec0_ep { ... = codec0_ep; }; // (a) Multi Element 522 * mcodec0_ep_0 { ... = mcpu0_ep_0; }; }; // (4) connected CPU 523 * port@2 { mcodec1_ep { ... = codec1_ep; }; // (b) Multi Element 524 * mcodec1_ep_0 { ... = mcpu1_ep_0; }; // (5) connected CPU 525 * mcodec1_ep_1 { ... = mcpu2_ep_0; }; }; // (5) connected CPU 526 * }; 527 * }; 528 */ 529 struct device_node *mcpu_ep __free(device_node) = of_graph_get_next_port_endpoint(mcpu_port, NULL); 530 struct device_node *mcpu_ports __free(device_node) = port_to_ports(mcpu_port); 531 struct device_node *mcpu_port_top __free(device_node) = of_graph_get_next_port(mcpu_ports, NULL); 532 struct device_node *mcpu_ep_top __free(device_node) = of_graph_get_next_port_endpoint(mcpu_port_top, NULL); 533 struct device_node *mcodec_ep_top __free(device_node) = of_graph_get_remote_endpoint(mcpu_ep_top); 534 struct device_node *mcodec_port_top __free(device_node) = ep_to_port(mcodec_ep_top); 535 struct device_node *mcodec_ports __free(device_node) = port_to_ports(mcodec_port_top); 536 int nm_max = max(dai_link->num_cpus, dai_link->num_codecs); 537 int ret = 0; 538 539 if (cpu_idx > dai_link->num_cpus) 540 return -EINVAL; 541 542 for_each_of_graph_port_endpoint(mcpu_port, mcpu_ep_n) { 543 int codec_idx = 0; 544 545 /* ignore 1st ep which is for element */ 546 if (mcpu_ep_n == mcpu_ep) 547 continue; 548 549 if (*nm_idx > nm_max) 550 break; 551 552 struct device_node *mcodec_ep_n __free(device_node) = of_graph_get_remote_endpoint(mcpu_ep_n); 553 struct device_node *mcodec_port __free(device_node) = ep_to_port(mcodec_ep_n); 554 555 ret = -EINVAL; 556 if (mcodec_ports != port_to_ports(mcodec_port)) 557 break; 558 559 for_each_of_graph_port(mcodec_ports, mcodec_port_i) { 560 561 /* ignore 1st port which is for pair connection */ 562 if (mcodec_port_top == mcodec_port_i) 563 continue; 564 565 if (codec_idx > dai_link->num_codecs) 566 break; 567 568 if (mcodec_port_i == mcodec_port) { 569 dai_link->ch_maps[*nm_idx].cpu = cpu_idx; 570 dai_link->ch_maps[*nm_idx].codec = codec_idx; 571 572 (*nm_idx)++; 573 ret = 0; 574 break; 575 } 576 codec_idx++; 577 } 578 if (ret < 0) 579 break; 580 } 581 582 return ret; 583 } 584 585 static int graph_parse_node_multi(struct simple_util_priv *priv, 586 enum graph_type gtype, 587 struct device_node *port, 588 struct link_info *li, int is_cpu) 589 { 590 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 591 struct device *dev = simple_priv_to_dev(priv); 592 int ret = -ENOMEM; 593 int nm_idx = 0; 594 int nm_max = max(dai_link->num_cpus, dai_link->num_codecs); 595 596 /* 597 * create ch_maps if CPU:Codec = N:M 598 * DPCM is out of scope 599 */ 600 if (gtype != GRAPH_DPCM && !dai_link->ch_maps && 601 dai_link->num_cpus > 1 && dai_link->num_codecs > 1 && 602 dai_link->num_cpus != dai_link->num_codecs) { 603 604 dai_link->ch_maps = devm_kcalloc(dev, nm_max, 605 sizeof(struct snd_soc_dai_link_ch_map), GFP_KERNEL); 606 if (!dai_link->ch_maps) 607 goto multi_err; 608 } 609 610 for (int idx = 0;; idx++) { 611 /* 612 * multi { 613 * ports { 614 * <port> port@0 { ... }; // to pair 615 * port@1 { mcpu1_ep { ... = cpu1_ep };}; // Multi Element 616 * port@2 { mcpu2_ep { ... = cpu2_ep };}; // Multi Element 617 * }; 618 * }; 619 * 620 * cpu { 621 * ports { 622 * <ep> port@0 { cpu1_ep { ... = mcpu1_ep };}; 623 * }; 624 * }; 625 */ 626 struct device_node *ep __free(device_node) = graph_get_next_multi_ep(&port, idx + 1); 627 if (!ep) 628 break; 629 630 ret = __graph_parse_node(priv, gtype, ep, li, is_cpu, idx); 631 if (ret < 0) 632 goto multi_err; 633 634 /* CPU:Codec = N:M */ 635 if (is_cpu && dai_link->ch_maps) { 636 ret = graph_parse_node_multi_nm(dai_link, &nm_idx, idx, port); 637 if (ret < 0) 638 goto multi_err; 639 } 640 } 641 642 if (is_cpu && dai_link->ch_maps && (nm_idx != nm_max)) 643 ret = -EINVAL; 644 645 multi_err: 646 return ret; 647 } 648 649 static int graph_parse_node_single(struct simple_util_priv *priv, 650 enum graph_type gtype, 651 struct device_node *ep, 652 struct link_info *li, int is_cpu) 653 { 654 return __graph_parse_node(priv, gtype, ep, li, is_cpu, 0); 655 } 656 657 static int graph_parse_node(struct simple_util_priv *priv, 658 enum graph_type gtype, 659 struct device_node *ep, 660 struct link_info *li, int is_cpu) 661 { 662 struct device_node *port __free(device_node) = ep_to_port(ep); 663 664 if (graph_lnk_is_multi(port)) 665 return graph_parse_node_multi(priv, gtype, port, li, is_cpu); 666 else 667 return graph_parse_node_single(priv, gtype, ep, li, is_cpu); 668 } 669 670 static void graph_parse_daifmt(struct device_node *node, unsigned int *daifmt) 671 { 672 unsigned int fmt; 673 674 if (!node) 675 return; 676 677 /* 678 * see also above "daifmt" explanation 679 * and samples. 680 */ 681 682 /* 683 * ports { 684 * (A) 685 * port { 686 * (B) 687 * endpoint { 688 * (C) 689 * }; 690 * }; 691 * }; 692 * }; 693 */ 694 695 #define update_daifmt(name) \ 696 if (!(*daifmt & SND_SOC_DAIFMT_##name##_MASK) && \ 697 (fmt & SND_SOC_DAIFMT_##name##_MASK)) \ 698 *daifmt |= fmt & SND_SOC_DAIFMT_##name##_MASK 699 700 /* 701 * format 702 * 703 * This function is called by (C) -> (B) -> (A) order. 704 * Set if applicable part was not yet set. 705 */ 706 fmt = snd_soc_daifmt_parse_format(node, NULL); 707 update_daifmt(FORMAT); 708 update_daifmt(CLOCK); 709 update_daifmt(INV); 710 } 711 712 static unsigned int graph_parse_bitframe(struct device_node *ep) 713 { 714 struct device_node *port __free(device_node) = ep_to_port(ep); 715 struct device_node *ports __free(device_node) = port_to_ports(port); 716 717 return snd_soc_daifmt_clock_provider_from_bitmap( 718 snd_soc_daifmt_parse_clock_provider_as_bitmap(ep, NULL) | 719 snd_soc_daifmt_parse_clock_provider_as_bitmap(port, NULL) | 720 snd_soc_daifmt_parse_clock_provider_as_bitmap(ports, NULL)); 721 } 722 723 static void graph_link_init(struct simple_util_priv *priv, 724 struct device_node *lnk, 725 struct device_node *ep_cpu, 726 struct device_node *ep_codec, 727 struct link_info *li, 728 int is_cpu_node) 729 { 730 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 731 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 732 struct device_node *port_cpu = ep_to_port(ep_cpu); 733 struct device_node *port_codec = ep_to_port(ep_codec); 734 struct device_node *multi_cpu_port = NULL, *multi_codec_port = NULL; 735 struct snd_soc_dai_link_component *dlc; 736 unsigned int daifmt = 0; 737 bool playback_only = 0, capture_only = 0; 738 enum snd_soc_trigger_order trigger_start = SND_SOC_TRIGGER_ORDER_DEFAULT; 739 enum snd_soc_trigger_order trigger_stop = SND_SOC_TRIGGER_ORDER_DEFAULT; 740 int multi_cpu_port_idx = 1, multi_codec_port_idx = 1; 741 int i; 742 743 if (graph_lnk_is_multi(port_cpu)) { 744 multi_cpu_port = port_cpu; 745 ep_cpu = graph_get_next_multi_ep(&multi_cpu_port, multi_cpu_port_idx++); 746 of_node_put(port_cpu); 747 port_cpu = ep_to_port(ep_cpu); 748 } else { 749 of_node_get(ep_cpu); 750 } 751 struct device_node *ports_cpu __free(device_node) = port_to_ports(port_cpu); 752 753 if (graph_lnk_is_multi(port_codec)) { 754 multi_codec_port = port_codec; 755 ep_codec = graph_get_next_multi_ep(&multi_codec_port, multi_codec_port_idx++); 756 of_node_put(port_codec); 757 port_codec = ep_to_port(ep_codec); 758 } else { 759 of_node_get(ep_codec); 760 } 761 struct device_node *ports_codec __free(device_node) = port_to_ports(port_codec); 762 763 graph_parse_daifmt(ep_cpu, &daifmt); 764 graph_parse_daifmt(ep_codec, &daifmt); 765 graph_parse_daifmt(port_cpu, &daifmt); 766 graph_parse_daifmt(port_codec, &daifmt); 767 graph_parse_daifmt(ports_cpu, &daifmt); 768 graph_parse_daifmt(ports_codec, &daifmt); 769 graph_parse_daifmt(lnk, &daifmt); 770 771 graph_util_parse_link_direction(lnk, &playback_only, &capture_only); 772 graph_util_parse_link_direction(ports_cpu, &playback_only, &capture_only); 773 graph_util_parse_link_direction(ports_codec, &playback_only, &capture_only); 774 graph_util_parse_link_direction(port_cpu, &playback_only, &capture_only); 775 graph_util_parse_link_direction(port_codec, &playback_only, &capture_only); 776 graph_util_parse_link_direction(ep_cpu, &playback_only, &capture_only); 777 graph_util_parse_link_direction(ep_codec, &playback_only, &capture_only); 778 779 of_property_read_u32(lnk, "mclk-fs", &dai_props->mclk_fs); 780 of_property_read_u32(ports_cpu, "mclk-fs", &dai_props->mclk_fs); 781 of_property_read_u32(ports_codec, "mclk-fs", &dai_props->mclk_fs); 782 of_property_read_u32(port_cpu, "mclk-fs", &dai_props->mclk_fs); 783 of_property_read_u32(port_codec, "mclk-fs", &dai_props->mclk_fs); 784 of_property_read_u32(ep_cpu, "mclk-fs", &dai_props->mclk_fs); 785 of_property_read_u32(ep_codec, "mclk-fs", &dai_props->mclk_fs); 786 787 graph_util_parse_trigger_order(priv, lnk, &trigger_start, &trigger_stop); 788 graph_util_parse_trigger_order(priv, ports_cpu, &trigger_start, &trigger_stop); 789 graph_util_parse_trigger_order(priv, ports_codec, &trigger_start, &trigger_stop); 790 graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop); 791 graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop); 792 graph_util_parse_trigger_order(priv, ep_cpu, &trigger_start, &trigger_stop); 793 graph_util_parse_trigger_order(priv, ep_codec, &trigger_start, &trigger_stop); 794 795 for_each_link_cpus(dai_link, i, dlc) { 796 dlc->ext_fmt = graph_parse_bitframe(ep_cpu); 797 798 if (multi_cpu_port) 799 ep_cpu = graph_get_next_multi_ep(&multi_cpu_port, multi_cpu_port_idx++); 800 } 801 802 for_each_link_codecs(dai_link, i, dlc) { 803 dlc->ext_fmt = graph_parse_bitframe(ep_codec); 804 805 if (multi_codec_port) 806 ep_codec = graph_get_next_multi_ep(&multi_codec_port, multi_codec_port_idx++); 807 } 808 809 /*** Don't use port_cpu / port_codec after here ***/ 810 811 dai_link->playback_only = playback_only; 812 dai_link->capture_only = capture_only; 813 814 dai_link->trigger_start = trigger_start; 815 dai_link->trigger_stop = trigger_stop; 816 817 dai_link->dai_fmt = daifmt; 818 dai_link->init = simple_util_dai_init; 819 dai_link->ops = &graph_ops; 820 if (priv->ops) 821 dai_link->ops = priv->ops; 822 823 of_node_put(port_cpu); 824 of_node_put(port_codec); 825 of_node_put(ep_cpu); 826 of_node_put(ep_codec); 827 } 828 829 int audio_graph2_link_normal(struct simple_util_priv *priv, 830 struct device_node *lnk, 831 struct link_info *li) 832 { 833 struct device_node *cpu_port = lnk; 834 struct device_node *cpu_ep __free(device_node) = of_graph_get_next_port_endpoint(cpu_port, NULL); 835 struct device_node *codec_ep __free(device_node) = of_graph_get_remote_endpoint(cpu_ep); 836 int ret; 837 838 /* 839 * call Codec first. 840 * see 841 * __graph_parse_node() :: DAI Naming 842 */ 843 ret = graph_parse_node(priv, GRAPH_NORMAL, codec_ep, li, 0); 844 if (ret < 0) 845 return ret; 846 847 /* 848 * call CPU, and set DAI Name 849 */ 850 ret = graph_parse_node(priv, GRAPH_NORMAL, cpu_ep, li, 1); 851 if (ret < 0) 852 return ret; 853 854 graph_link_init(priv, lnk, cpu_ep, codec_ep, li, 1); 855 856 return ret; 857 } 858 EXPORT_SYMBOL_GPL(audio_graph2_link_normal); 859 860 int audio_graph2_link_dpcm(struct simple_util_priv *priv, 861 struct device_node *lnk, 862 struct link_info *li) 863 { 864 struct device_node *ep __free(device_node) = of_graph_get_next_port_endpoint(lnk, NULL); 865 struct device_node *rep __free(device_node) = of_graph_get_remote_endpoint(ep); 866 struct device_node *cpu_ep = NULL; 867 struct device_node *codec_ep = NULL; 868 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 869 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 870 int is_cpu = graph_util_is_ports0(lnk); 871 int ret; 872 873 if (is_cpu) { 874 cpu_ep = rep; 875 876 /* 877 * dpcm { 878 * // Front-End 879 * ports@0 { 880 * => lnk: port@0 { ep: { ... = rep }; }; 881 * ... 882 * }; 883 * // Back-End 884 * ports@0 { 885 * ... 886 * }; 887 * }; 888 * 889 * CPU { 890 * rports: ports { 891 * rport: port@0 { rep: { ... = ep } }; 892 * } 893 * } 894 */ 895 /* 896 * setup CPU here, Codec is already set as dummy. 897 * see 898 * simple_util_init_priv() 899 */ 900 dai_link->dynamic = 1; 901 dai_link->dpcm_merged_format = 1; 902 903 ret = graph_parse_node(priv, GRAPH_DPCM, cpu_ep, li, 1); 904 if (ret) 905 return ret; 906 907 } else { 908 codec_ep = rep; 909 910 /* 911 * dpcm { 912 * // Front-End 913 * ports@0 { 914 * ... 915 * }; 916 * // Back-End 917 * ports@0 { 918 * => lnk: port@0 { ep: { ... = rep; }; }; 919 * ... 920 * }; 921 * }; 922 * 923 * Codec { 924 * rports: ports { 925 * rport: port@0 { rep: { ... = ep; }; }; 926 * } 927 * } 928 */ 929 /* 930 * setup Codec here, CPU is already set as dummy. 931 * see 932 * simple_util_init_priv() 933 */ 934 935 /* BE settings */ 936 dai_link->no_pcm = 1; 937 dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup; 938 939 ret = graph_parse_node(priv, GRAPH_DPCM, codec_ep, li, 0); 940 if (ret < 0) 941 return ret; 942 } 943 944 graph_parse_convert(ep, dai_props); /* at node of <dpcm> */ 945 graph_parse_convert(rep, dai_props); /* at node of <CPU/Codec> */ 946 947 graph_link_init(priv, lnk, cpu_ep, codec_ep, li, is_cpu); 948 949 return ret; 950 } 951 EXPORT_SYMBOL_GPL(audio_graph2_link_dpcm); 952 953 int audio_graph2_link_c2c(struct simple_util_priv *priv, 954 struct device_node *lnk, 955 struct link_info *li) 956 { 957 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 958 struct device_node *port0 = lnk; 959 struct device_node *ports __free(device_node) = port_to_ports(port0); 960 struct device_node *port1 __free(device_node) = of_graph_get_next_port(ports, port0); 961 u32 val = 0; 962 int ret = -EINVAL; 963 964 /* 965 * codec2codec { 966 * ports { 967 * rate = <48000>; 968 * => lnk: port@0 { c2c0_ep: { ... = codec0_ep; }; }; 969 * port@1 { c2c1_ep: { ... = codec1_ep; }; }; 970 * }; 971 * }; 972 * 973 * Codec { 974 * ports { 975 * port@0 { codec0_ep: ... }; }; 976 * port@1 { codec1_ep: ... }; }; 977 * }; 978 * }; 979 */ 980 981 /* 982 * Card2 can use original Codec2Codec settings if DT has. 983 * It will use default settings if no settings on DT. 984 * see 985 * simple_util_init_for_codec2codec() 986 * 987 * Add more settings here if needed 988 */ 989 of_property_read_u32(ports, "rate", &val); 990 if (val) { 991 struct device *dev = simple_priv_to_dev(priv); 992 struct snd_soc_pcm_stream *c2c_conf; 993 994 c2c_conf = devm_kzalloc(dev, sizeof(*c2c_conf), GFP_KERNEL); 995 if (!c2c_conf) 996 return ret; 997 998 c2c_conf->formats = SNDRV_PCM_FMTBIT_S32_LE; /* update ME */ 999 c2c_conf->rates = SNDRV_PCM_RATE_8000_384000; 1000 c2c_conf->rate_min = 1001 c2c_conf->rate_max = val; 1002 c2c_conf->channels_min = 1003 c2c_conf->channels_max = 2; /* update ME */ 1004 1005 dai_link->c2c_params = c2c_conf; 1006 dai_link->num_c2c_params = 1; 1007 } 1008 1009 struct device_node *ep0 __free(device_node) = of_graph_get_next_port_endpoint(port0, NULL); 1010 struct device_node *ep1 __free(device_node) = of_graph_get_next_port_endpoint(port1, NULL); 1011 1012 struct device_node *codec0_ep __free(device_node) = of_graph_get_remote_endpoint(ep0); 1013 struct device_node *codec1_ep __free(device_node) = of_graph_get_remote_endpoint(ep1); 1014 1015 /* 1016 * call Codec first. 1017 * see 1018 * __graph_parse_node() :: DAI Naming 1019 */ 1020 ret = graph_parse_node(priv, GRAPH_C2C, codec1_ep, li, 0); 1021 if (ret < 0) 1022 return ret; 1023 1024 /* 1025 * call CPU, and set DAI Name 1026 */ 1027 ret = graph_parse_node(priv, GRAPH_C2C, codec0_ep, li, 1); 1028 if (ret < 0) 1029 return ret; 1030 1031 graph_link_init(priv, lnk, codec0_ep, codec1_ep, li, 1); 1032 1033 return ret; 1034 } 1035 EXPORT_SYMBOL_GPL(audio_graph2_link_c2c); 1036 1037 static int graph_link(struct simple_util_priv *priv, 1038 struct graph2_custom_hooks *hooks, 1039 enum graph_type gtype, 1040 struct device_node *lnk, 1041 struct link_info *li) 1042 { 1043 struct device *dev = simple_priv_to_dev(priv); 1044 GRAPH2_CUSTOM func = NULL; 1045 int ret = -EINVAL; 1046 1047 switch (gtype) { 1048 case GRAPH_NORMAL: 1049 if (hooks && hooks->custom_normal) 1050 func = hooks->custom_normal; 1051 else 1052 func = audio_graph2_link_normal; 1053 break; 1054 case GRAPH_DPCM: 1055 if (hooks && hooks->custom_dpcm) 1056 func = hooks->custom_dpcm; 1057 else 1058 func = audio_graph2_link_dpcm; 1059 break; 1060 case GRAPH_C2C: 1061 if (hooks && hooks->custom_c2c) 1062 func = hooks->custom_c2c; 1063 else 1064 func = audio_graph2_link_c2c; 1065 break; 1066 default: 1067 break; 1068 } 1069 1070 if (!func) { 1071 dev_err(dev, "non supported gtype (%d)\n", gtype); 1072 goto err; 1073 } 1074 1075 ret = func(priv, lnk, li); 1076 if (ret < 0) 1077 goto err; 1078 1079 li->link++; 1080 err: 1081 return ret; 1082 } 1083 1084 static int graph_counter(struct device_node *lnk) 1085 { 1086 /* 1087 * Multi CPU / Codec 1088 * 1089 * multi { 1090 * ports { 1091 * => lnk: port@0 { ... }; // to pair 1092 * port@1 { ... }; // Multi Element 1093 * port@2 { ... }; // Multi Element 1094 * ... 1095 * }; 1096 * }; 1097 * 1098 * ignore first lnk part 1099 */ 1100 if (graph_lnk_is_multi(lnk)) { 1101 struct device_node *ports = port_to_ports(lnk); 1102 1103 /* 1104 * CPU/Codec = N:M case has many endpoints. 1105 * We can't use of_graph_get_endpoint_count() here 1106 */ 1107 return of_graph_get_port_count(ports) - 1; 1108 } 1109 /* 1110 * Single CPU / Codec 1111 */ 1112 else 1113 return 1; 1114 } 1115 1116 static int graph_count_normal(struct simple_util_priv *priv, 1117 struct device_node *lnk, 1118 struct link_info *li) 1119 { 1120 struct device_node *cpu_port = lnk; 1121 struct device_node *cpu_ep __free(device_node) = of_graph_get_next_port_endpoint(cpu_port, NULL); 1122 struct device_node *codec_port __free(device_node) = of_graph_get_remote_port(cpu_ep); 1123 1124 /* 1125 * CPU { 1126 * => lnk: port { endpoint { .. }; }; 1127 * }; 1128 */ 1129 /* 1130 * DON'T REMOVE platforms 1131 * see 1132 * simple-card.c :: simple_count_noml() 1133 */ 1134 li->num[li->link].cpus = 1135 li->num[li->link].platforms = graph_counter(cpu_port); 1136 1137 li->num[li->link].codecs = graph_counter(codec_port); 1138 1139 return 0; 1140 } 1141 1142 static int graph_count_dpcm(struct simple_util_priv *priv, 1143 struct device_node *lnk, 1144 struct link_info *li) 1145 { 1146 struct device_node *ep __free(device_node) = of_graph_get_next_port_endpoint(lnk, NULL); 1147 struct device_node *rport __free(device_node) = of_graph_get_remote_port(ep); 1148 1149 /* 1150 * dpcm { 1151 * // Front-End 1152 * ports@0 { 1153 * => lnk: port@0 { endpoint { ... }; }; 1154 * ... 1155 * }; 1156 * // Back-End 1157 * ports@1 { 1158 * => lnk: port@0 { endpoint { ... }; }; 1159 * ... 1160 * }; 1161 * }; 1162 */ 1163 1164 if (graph_util_is_ports0(lnk)) { 1165 /* 1166 * DON'T REMOVE platforms 1167 * see 1168 * simple-card.c :: simple_count_noml() 1169 */ 1170 li->num[li->link].cpus = graph_counter(rport); /* FE */ 1171 li->num[li->link].platforms = graph_counter(rport); 1172 } else { 1173 li->num[li->link].codecs = graph_counter(rport); /* BE */ 1174 } 1175 1176 return 0; 1177 } 1178 1179 static int graph_count_c2c(struct simple_util_priv *priv, 1180 struct device_node *lnk, 1181 struct link_info *li) 1182 { 1183 struct device_node *ports __free(device_node) = port_to_ports(lnk); 1184 struct device_node *port0 = of_node_get(lnk); 1185 struct device_node *port1 = of_node_get(of_graph_get_next_port(ports, of_node_get(port0))); 1186 struct device_node *ep0 __free(device_node) = of_graph_get_next_port_endpoint(port0, NULL); 1187 struct device_node *ep1 __free(device_node) = of_graph_get_next_port_endpoint(port1, NULL); 1188 struct device_node *codec0 __free(device_node) = of_graph_get_remote_port(ep0); 1189 struct device_node *codec1 __free(device_node) = of_graph_get_remote_port(ep1); 1190 1191 /* 1192 * codec2codec { 1193 * ports { 1194 * => lnk: port@0 { endpoint { ... }; }; 1195 * port@1 { endpoint { ... }; }; 1196 * }; 1197 * }; 1198 */ 1199 /* 1200 * DON'T REMOVE platforms 1201 * see 1202 * simple-card.c :: simple_count_noml() 1203 */ 1204 li->num[li->link].cpus = 1205 li->num[li->link].platforms = graph_counter(codec0); 1206 1207 li->num[li->link].codecs = graph_counter(codec1); 1208 1209 return 0; 1210 } 1211 1212 static int graph_count(struct simple_util_priv *priv, 1213 struct graph2_custom_hooks *hooks, 1214 enum graph_type gtype, 1215 struct device_node *lnk, 1216 struct link_info *li) 1217 { 1218 struct device *dev = simple_priv_to_dev(priv); 1219 GRAPH2_CUSTOM func = NULL; 1220 int ret = -EINVAL; 1221 1222 if (li->link >= SNDRV_MAX_LINKS) { 1223 dev_err(dev, "too many links\n"); 1224 return ret; 1225 } 1226 1227 switch (gtype) { 1228 case GRAPH_NORMAL: 1229 func = graph_count_normal; 1230 break; 1231 case GRAPH_DPCM: 1232 func = graph_count_dpcm; 1233 break; 1234 case GRAPH_C2C: 1235 func = graph_count_c2c; 1236 break; 1237 default: 1238 break; 1239 } 1240 1241 if (!func) { 1242 dev_err(dev, "non supported gtype (%d)\n", gtype); 1243 goto err; 1244 } 1245 1246 ret = func(priv, lnk, li); 1247 if (ret < 0) 1248 goto err; 1249 1250 li->link++; 1251 err: 1252 return ret; 1253 } 1254 1255 static int graph_for_each_link(struct simple_util_priv *priv, 1256 struct graph2_custom_hooks *hooks, 1257 struct link_info *li, 1258 int (*func)(struct simple_util_priv *priv, 1259 struct graph2_custom_hooks *hooks, 1260 enum graph_type gtype, 1261 struct device_node *lnk, 1262 struct link_info *li)) 1263 { 1264 struct of_phandle_iterator it; 1265 struct device *dev = simple_priv_to_dev(priv); 1266 struct device_node *node = dev->of_node; 1267 struct device_node *lnk; 1268 enum graph_type gtype; 1269 int rc, ret; 1270 1271 /* loop for all listed CPU port */ 1272 of_for_each_phandle(&it, rc, node, "links", NULL, 0) { 1273 lnk = it.node; 1274 1275 gtype = graph_get_type(priv, lnk); 1276 1277 ret = func(priv, hooks, gtype, lnk, li); 1278 if (ret < 0) 1279 return ret; 1280 } 1281 1282 return 0; 1283 } 1284 1285 int audio_graph2_parse_of(struct simple_util_priv *priv, struct device *dev, 1286 struct graph2_custom_hooks *hooks) 1287 { 1288 struct snd_soc_card *card = simple_priv_to_card(priv); 1289 int ret; 1290 1291 struct link_info *li __free(kfree) = kzalloc(sizeof(*li), GFP_KERNEL); 1292 if (!li) 1293 return -ENOMEM; 1294 1295 card->probe = graph_util_card_probe; 1296 card->owner = THIS_MODULE; 1297 card->dev = dev; 1298 1299 if ((hooks) && (hooks)->hook_pre) { 1300 ret = (hooks)->hook_pre(priv); 1301 if (ret < 0) 1302 goto err; 1303 } 1304 1305 ret = graph_for_each_link(priv, hooks, li, graph_count); 1306 if (!li->link) 1307 ret = -EINVAL; 1308 if (ret < 0) 1309 goto err; 1310 1311 ret = simple_util_init_priv(priv, li); 1312 if (ret < 0) 1313 goto err; 1314 1315 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); 1316 if (IS_ERR(priv->pa_gpio)) { 1317 ret = PTR_ERR(priv->pa_gpio); 1318 dev_err(dev, "failed to get amplifier gpio: %d\n", ret); 1319 goto err; 1320 } 1321 1322 ret = simple_util_parse_widgets(card, NULL); 1323 if (ret < 0) 1324 goto err; 1325 1326 ret = simple_util_parse_routing(card, NULL); 1327 if (ret < 0) 1328 goto err; 1329 1330 memset(li, 0, sizeof(*li)); 1331 ret = graph_for_each_link(priv, hooks, li, graph_link); 1332 if (ret < 0) 1333 goto err; 1334 1335 ret = simple_util_parse_card_name(card, NULL); 1336 if (ret < 0) 1337 goto err; 1338 1339 snd_soc_card_set_drvdata(card, priv); 1340 1341 if ((hooks) && (hooks)->hook_post) { 1342 ret = (hooks)->hook_post(priv); 1343 if (ret < 0) 1344 goto err; 1345 } 1346 1347 simple_util_debug_info(priv); 1348 1349 ret = snd_soc_of_parse_aux_devs(card, "aux-devs"); 1350 if (ret < 0) 1351 goto err; 1352 1353 ret = devm_snd_soc_register_card(dev, card); 1354 err: 1355 if (ret < 0) 1356 dev_err_probe(dev, ret, "parse error\n"); 1357 1358 return ret; 1359 } 1360 EXPORT_SYMBOL_GPL(audio_graph2_parse_of); 1361 1362 static int graph_probe(struct platform_device *pdev) 1363 { 1364 struct simple_util_priv *priv; 1365 struct device *dev = &pdev->dev; 1366 1367 /* Allocate the private data and the DAI link array */ 1368 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1369 if (!priv) 1370 return -ENOMEM; 1371 1372 return audio_graph2_parse_of(priv, dev, NULL); 1373 } 1374 1375 static const struct of_device_id graph_of_match[] = { 1376 { .compatible = "audio-graph-card2", }, 1377 {}, 1378 }; 1379 MODULE_DEVICE_TABLE(of, graph_of_match); 1380 1381 static struct platform_driver graph_card = { 1382 .driver = { 1383 .name = "asoc-audio-graph-card2", 1384 .pm = &snd_soc_pm_ops, 1385 .of_match_table = graph_of_match, 1386 }, 1387 .probe = graph_probe, 1388 .remove = simple_util_remove, 1389 }; 1390 module_platform_driver(graph_card); 1391 1392 MODULE_ALIAS("platform:asoc-audio-graph-card2"); 1393 MODULE_LICENSE("GPL v2"); 1394 MODULE_DESCRIPTION("ASoC Audio Graph Card2"); 1395 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1396