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audio-graph-card2.c
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linux-6.19.14/sound/soc/generic/audio-graph-card2.c
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 85It 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 225enum 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 graph_ret(priv, ret) _graph_ret(priv, __func__, ret) 238static inline int _graph_ret(struct simple_util_priv *priv, 239 const char *func, int ret) 240{ 241 return snd_soc_ret(simple_priv_to_dev(priv), ret, "at %s()\n", func); 242} 243 244#define ep_to_port(ep) of_get_parent(ep) 245static struct device_node *port_to_ports(struct device_node *port) 246{ 247 struct device_node *ports = of_get_parent(port); 248 249 if (!of_node_name_eq(ports, "ports")) { 250 of_node_put(ports); 251 return NULL; 252 } 253 return ports; 254} 255 256static enum graph_type __graph_get_type(struct device_node *lnk) 257{ 258 struct device_node *np, *parent_np; 259 enum graph_type ret; 260 261 /* 262 * target { 263 * ports { 264 * => lnk: port@0 { ... }; 265 * port@1 { ... }; 266 * }; 267 * }; 268 */ 269 np = of_get_parent(lnk); 270 if (of_node_name_eq(np, "ports")) { 271 parent_np = of_get_parent(np); 272 of_node_put(np); 273 np = parent_np; 274 } 275 276 if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) { 277 ret = GRAPH_MULTI; 278 fw_devlink_purge_absent_suppliers(&np->fwnode); 279 goto out_put; 280 } 281 282 if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) { 283 ret = GRAPH_DPCM; 284 fw_devlink_purge_absent_suppliers(&np->fwnode); 285 goto out_put; 286 } 287 288 if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) { 289 ret = GRAPH_C2C; 290 fw_devlink_purge_absent_suppliers(&np->fwnode); 291 goto out_put; 292 } 293 294 ret = GRAPH_NORMAL; 295 296out_put: 297 of_node_put(np); 298 return ret; 299 300} 301 302static enum graph_type graph_get_type(struct simple_util_priv *priv, 303 struct device_node *lnk) 304{ 305 enum graph_type type = __graph_get_type(lnk); 306 307 /* GRAPH_MULTI here means GRAPH_NORMAL */ 308 if (type == GRAPH_MULTI) 309 type = GRAPH_NORMAL; 310 311#ifdef DEBUG 312 { 313 struct device *dev = simple_priv_to_dev(priv); 314 const char *str = "Normal"; 315 316 switch (type) { 317 case GRAPH_DPCM: 318 if (graph_util_is_ports0(lnk)) 319 str = "DPCM Front-End"; 320 else 321 str = "DPCM Back-End"; 322 break; 323 case GRAPH_C2C: 324 str = "Codec2Codec"; 325 break; 326 default: 327 break; 328 } 329 330 dev_dbg(dev, "%pOF (%s)", lnk, str); 331 } 332#endif 333 return type; 334} 335 336static int graph_lnk_is_multi(struct device_node *lnk) 337{ 338 return __graph_get_type(lnk) == GRAPH_MULTI; 339} 340 341static struct device_node *graph_get_next_multi_ep(struct device_node **port, int idx) 342{ 343 struct device_node *ports __free(device_node) = port_to_ports(*port); 344 struct device_node *rep = NULL; 345 346 /* 347 * multi { 348 * ports { 349 * => lnk: port@0 { ... }; // to pair 350 * port@1 { ep { ... = rep0 } }; // Multi Element 351 * port@2 { ep { ... = rep1 } }; // Multi Element 352 * ... 353 * }; 354 * }; 355 * 356 * xxx { 357 * port@0 { rep0 }; 358 * port@1 { rep1 }; 359 * }; 360 */ 361 362 /* 363 * Don't use of_graph_get_next_port() here 364 * 365 * In overlay case, "port" are not necessarily in order. So we need to use 366 * of_graph_get_port_by_id() instead 367 */ 368 of_node_put(*port); 369 370 *port = of_graph_get_port_by_id(ports, idx); 371 if (*port) { 372 struct device_node *ep __free(device_node) = of_graph_get_next_port_endpoint(*port, NULL); 373 374 rep = of_graph_get_remote_endpoint(ep); 375 } 376 377 return rep; 378} 379 380static const struct snd_soc_ops graph_ops = { 381 .startup = simple_util_startup, 382 .shutdown = simple_util_shutdown, 383 .hw_params = simple_util_hw_params, 384}; 385 386static void graph_parse_convert(struct device_node *ep, 387 struct simple_dai_props *props) 388{ 389 struct device_node *port __free(device_node) = ep_to_port(ep); 390 struct device_node *ports __free(device_node) = port_to_ports(port); 391 struct simple_util_data *adata = &props->adata; 392 393 simple_util_parse_convert(ports, NULL, adata); 394 simple_util_parse_convert(port, NULL, adata); 395 simple_util_parse_convert(ep, NULL, adata); 396} 397 398static int __graph_parse_node(struct simple_util_priv *priv, 399 enum graph_type gtype, 400 struct device_node *ep, 401 struct link_info *li, 402 int is_cpu, int idx) 403{ 404 struct device *dev = simple_priv_to_dev(priv); 405 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 406 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 407 struct snd_soc_dai_link_component *dlc; 408 struct simple_util_dai *dai; 409 int ret, is_single_links = 0; 410 411 if (is_cpu) { 412 dlc = snd_soc_link_to_cpu(dai_link, idx); 413 dai = simple_props_to_dai_cpu(dai_props, idx); 414 } else { 415 dlc = snd_soc_link_to_codec(dai_link, idx); 416 dai = simple_props_to_dai_codec(dai_props, idx); 417 } 418 419 ret = graph_util_parse_dai(priv, ep, dlc, &is_single_links); 420 if (ret < 0) 421 goto end; 422 423 ret = simple_util_parse_tdm(ep, dai); 424 if (ret < 0) 425 goto end; 426 427 ret = simple_util_parse_tdm_width_map(priv, ep, dai); 428 if (ret < 0) 429 goto end; 430 431 ret = simple_util_parse_clk(dev, ep, dai, dlc); 432 if (ret < 0) 433 goto end; 434 435 /* 436 * set DAI Name 437 */ 438 if (!dai_link->name) { 439 struct snd_soc_dai_link_component *cpus = dlc; 440 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx); 441 char *cpu_multi = ""; 442 char *codec_multi = ""; 443 444 if (dai_link->num_cpus > 1) 445 cpu_multi = "_multi"; 446 if (dai_link->num_codecs > 1) 447 codec_multi = "_multi"; 448 449 switch (gtype) { 450 case GRAPH_NORMAL: 451 /* run is_cpu only. see audio_graph2_link_normal() */ 452 if (is_cpu) 453 simple_util_set_dailink_name(priv, dai_link, "%s%s-%s%s", 454 cpus->dai_name, cpu_multi, 455 codecs->dai_name, codec_multi); 456 break; 457 case GRAPH_DPCM: 458 if (is_cpu) 459 simple_util_set_dailink_name(priv, dai_link, "fe.%pOFP.%s%s", 460 cpus->of_node, cpus->dai_name, cpu_multi); 461 else 462 simple_util_set_dailink_name(priv, dai_link, "be.%pOFP.%s%s", 463 codecs->of_node, codecs->dai_name, codec_multi); 464 break; 465 case GRAPH_C2C: 466 /* run is_cpu only. see audio_graph2_link_c2c() */ 467 if (is_cpu) 468 simple_util_set_dailink_name(priv, dai_link, "c2c.%s%s-%s%s", 469 cpus->dai_name, cpu_multi, 470 codecs->dai_name, codec_multi); 471 break; 472 default: 473 break; 474 } 475 } 476 477 /* 478 * Check "prefix" from top node 479 * if DPCM-BE case 480 */ 481 if (!is_cpu && gtype == GRAPH_DPCM) { 482 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx); 483 struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, idx); 484 struct device_node *rport __free(device_node) = ep_to_port(ep); 485 struct device_node *rports __free(device_node) = port_to_ports(rport); 486 487 snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix"); 488 snd_soc_of_parse_node_prefix(rport, cconf, codecs->of_node, "prefix"); 489 } 490 491 if (is_cpu) { 492 struct snd_soc_dai_link_component *cpus = dlc; 493 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, idx); 494 495 simple_util_canonicalize_cpu(cpus, is_single_links); 496 simple_util_canonicalize_platform(platforms, cpus); 497 } 498end: 499 return graph_ret(priv, ret); 500} 501 502static int graph_parse_node_multi_nm(struct simple_util_priv *priv, 503 struct snd_soc_dai_link *dai_link, 504 int *nm_idx, int cpu_idx, 505 struct device_node *mcpu_port) 506{ 507 /* 508 * +---+ +---+ 509 * | X|<-@------->|x | 510 * | | | | 511 * cpu0 <--|A 1|<--------->|4 a|-> codec0 512 * cpu1 <--|B 2|<-----+--->|5 b|-> codec1 513 * cpu2 <--|C 3|<----/ +---+ 514 * +---+ 515 * 516 * multi { 517 * ports { 518 * port@0 { mcpu_top_ep {... = mcodec_ep; }; }; // (X) to pair 519 * <mcpu_port> port@1 { mcpu0_ep { ... = cpu0_ep; }; // (A) Multi Element 520 * mcpu0_ep_0 { ... = mcodec0_ep_0; }; }; // (1) connected Codec 521 * port@2 { mcpu1_ep { ... = cpu1_ep; }; // (B) Multi Element 522 * mcpu1_ep_0 { ... = mcodec1_ep_0; }; }; // (2) connected Codec 523 * port@3 { mcpu2_ep { ... = cpu2_ep; }; // (C) Multi Element 524 * mcpu2_ep_0 { ... = mcodec1_ep_1; }; }; // (3) connected Codec 525 * }; 526 * 527 * ports { 528 * port@0 { mcodec_top_ep {... = mcpu_ep; }; }; // (x) to pair 529 * <mcodec_port>port@1 { mcodec0_ep { ... = codec0_ep; }; // (a) Multi Element 530 * mcodec0_ep_0 { ... = mcpu0_ep_0; }; }; // (4) connected CPU 531 * port@2 { mcodec1_ep { ... = codec1_ep; }; // (b) Multi Element 532 * mcodec1_ep_0 { ... = mcpu1_ep_0; }; // (5) connected CPU 533 * mcodec1_ep_1 { ... = mcpu2_ep_0; }; }; // (5) connected CPU 534 * }; 535 * }; 536 */ 537 struct device_node *mcpu_ep __free(device_node) = of_graph_get_next_port_endpoint(mcpu_port, NULL); 538 struct device_node *mcpu_ports __free(device_node) = port_to_ports(mcpu_port); 539 struct device_node *mcpu_port_top __free(device_node) = of_graph_get_next_port(mcpu_ports, NULL); 540 struct device_node *mcpu_ep_top __free(device_node) = of_graph_get_next_port_endpoint(mcpu_port_top, NULL); 541 struct device_node *mcodec_ep_top __free(device_node) = of_graph_get_remote_endpoint(mcpu_ep_top); 542 struct device_node *mcodec_port_top __free(device_node) = ep_to_port(mcodec_ep_top); 543 struct device_node *mcodec_ports __free(device_node) = port_to_ports(mcodec_port_top); 544 int nm_max = max(dai_link->num_cpus, dai_link->num_codecs); 545 int ret = -EINVAL; 546 547 if (cpu_idx > dai_link->num_cpus) 548 goto end; 549 550 for_each_of_graph_port_endpoint(mcpu_port, mcpu_ep_n) { 551 int codec_idx = 0; 552 553 /* ignore 1st ep which is for element */ 554 if (mcpu_ep_n == mcpu_ep) 555 continue; 556 557 if (*nm_idx > nm_max) 558 break; 559 560 struct device_node *mcodec_ep_n __free(device_node) = of_graph_get_remote_endpoint(mcpu_ep_n); 561 struct device_node *mcodec_port __free(device_node) = ep_to_port(mcodec_ep_n); 562 563 ret = -EINVAL; 564 if (mcodec_ports != port_to_ports(mcodec_port)) 565 break; 566 567 for_each_of_graph_port(mcodec_ports, mcodec_port_i) { 568 569 /* ignore 1st port which is for pair connection */ 570 if (mcodec_port_top == mcodec_port_i) 571 continue; 572 573 if (codec_idx > dai_link->num_codecs) 574 break; 575 576 if (mcodec_port_i == mcodec_port) { 577 dai_link->ch_maps[*nm_idx].cpu = cpu_idx; 578 dai_link->ch_maps[*nm_idx].codec = codec_idx; 579 580 (*nm_idx)++; 581 ret = 0; 582 break; 583 } 584 codec_idx++; 585 } 586 if (ret < 0) 587 break; 588 } 589end: 590 return graph_ret(priv, ret); 591} 592 593static int graph_parse_node_multi(struct simple_util_priv *priv, 594 enum graph_type gtype, 595 struct device_node *port, 596 struct link_info *li, int is_cpu) 597{ 598 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 599 struct device *dev = simple_priv_to_dev(priv); 600 int ret = -ENOMEM; 601 int nm_idx = 0; 602 int nm_max = max(dai_link->num_cpus, dai_link->num_codecs); 603 604 /* 605 * create ch_maps if CPU:Codec = N:M 606 * DPCM is out of scope 607 */ 608 if (gtype != GRAPH_DPCM && !dai_link->ch_maps && 609 dai_link->num_cpus > 1 && dai_link->num_codecs > 1 && 610 dai_link->num_cpus != dai_link->num_codecs) { 611 612 dai_link->ch_maps = devm_kcalloc(dev, nm_max, 613 sizeof(struct snd_soc_dai_link_ch_map), GFP_KERNEL); 614 if (!dai_link->ch_maps) 615 goto multi_err; 616 } 617 618 for (int idx = 0;; idx++) { 619 /* 620 * multi { 621 * ports { 622 * <port> port@0 { ... }; // to pair 623 * port@1 { mcpu1_ep { ... = cpu1_ep };}; // Multi Element 624 * port@2 { mcpu2_ep { ... = cpu2_ep };}; // Multi Element 625 * }; 626 * }; 627 * 628 * cpu { 629 * ports { 630 * <ep> port@0 { cpu1_ep { ... = mcpu1_ep };}; 631 * }; 632 * }; 633 */ 634 struct device_node *ep __free(device_node) = graph_get_next_multi_ep(&port, idx + 1); 635 if (!ep) 636 break; 637 638 ret = __graph_parse_node(priv, gtype, ep, li, is_cpu, idx); 639 if (ret < 0) 640 goto multi_err; 641 642 /* CPU:Codec = N:M */ 643 if (is_cpu && dai_link->ch_maps) { 644 ret = graph_parse_node_multi_nm(priv, dai_link, &nm_idx, idx, port); 645 if (ret < 0) 646 goto multi_err; 647 } 648 } 649 650 if (is_cpu && dai_link->ch_maps && (nm_idx != nm_max)) 651 ret = -EINVAL; 652 653multi_err: 654 return graph_ret(priv, ret); 655} 656 657static int graph_parse_node_single(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 return graph_ret(priv, __graph_parse_node(priv, gtype, ep, li, is_cpu, 0)); 663} 664 665static int graph_parse_node(struct simple_util_priv *priv, 666 enum graph_type gtype, 667 struct device_node *ep, 668 struct link_info *li, int is_cpu) 669{ 670 struct device_node *port __free(device_node) = ep_to_port(ep); 671 int ret; 672 673 if (graph_lnk_is_multi(port)) 674 ret = graph_parse_node_multi(priv, gtype, port, li, is_cpu); 675 else 676 ret = graph_parse_node_single(priv, gtype, ep, li, is_cpu); 677 678 return graph_ret(priv, ret); 679} 680 681static void graph_parse_daifmt(struct device_node *node, unsigned int *daifmt) 682{ 683 unsigned int fmt; 684 685 if (!node) 686 return; 687 688 /* 689 * see also above "daifmt" explanation 690 * and samples. 691 */ 692 693 /* 694 * ports { 695 * (A) 696 * port { 697 * (B) 698 * endpoint { 699 * (C) 700 * }; 701 * }; 702 * }; 703 * }; 704 */ 705 706#define update_daifmt(name) \ 707 if (!(*daifmt & SND_SOC_DAIFMT_##name##_MASK) && \ 708 (fmt & SND_SOC_DAIFMT_##name##_MASK)) \ 709 *daifmt |= fmt & SND_SOC_DAIFMT_##name##_MASK 710 711 /* 712 * format 713 * 714 * This function is called by (C) -> (B) -> (A) order. 715 * Set if applicable part was not yet set. 716 */ 717 fmt = snd_soc_daifmt_parse_format(node, NULL); 718 update_daifmt(FORMAT); 719 update_daifmt(CLOCK); 720 update_daifmt(INV); 721} 722 723static unsigned int graph_parse_bitframe(struct device_node *ep) 724{ 725 struct device_node *port __free(device_node) = ep_to_port(ep); 726 struct device_node *ports __free(device_node) = port_to_ports(port); 727 728 return snd_soc_daifmt_clock_provider_from_bitmap( 729 snd_soc_daifmt_parse_clock_provider_as_bitmap(ep, NULL) | 730 snd_soc_daifmt_parse_clock_provider_as_bitmap(port, NULL) | 731 snd_soc_daifmt_parse_clock_provider_as_bitmap(ports, NULL)); 732} 733 734static void graph_link_init(struct simple_util_priv *priv, 735 struct device_node *lnk, 736 struct device_node *ep_cpu, 737 struct device_node *ep_codec, 738 struct link_info *li, 739 int is_cpu_node) 740{ 741 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 742 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 743 struct device_node *port_cpu = ep_to_port(ep_cpu); 744 struct device_node *port_codec = ep_to_port(ep_codec); 745 struct device_node *multi_cpu_port = NULL, *multi_codec_port = NULL; 746 struct snd_soc_dai_link_component *dlc; 747 unsigned int daifmt = 0; 748 bool playback_only = 0, capture_only = 0; 749 enum snd_soc_trigger_order trigger_start = SND_SOC_TRIGGER_ORDER_DEFAULT; 750 enum snd_soc_trigger_order trigger_stop = SND_SOC_TRIGGER_ORDER_DEFAULT; 751 int multi_cpu_port_idx = 1, multi_codec_port_idx = 1; 752 int i; 753 754 if (graph_lnk_is_multi(port_cpu)) { 755 multi_cpu_port = port_cpu; 756 ep_cpu = graph_get_next_multi_ep(&multi_cpu_port, multi_cpu_port_idx++); 757 of_node_put(port_cpu); 758 port_cpu = ep_to_port(ep_cpu); 759 } else { 760 of_node_get(ep_cpu); 761 } 762 struct device_node *ports_cpu __free(device_node) = port_to_ports(port_cpu); 763 764 if (graph_lnk_is_multi(port_codec)) { 765 multi_codec_port = port_codec; 766 ep_codec = graph_get_next_multi_ep(&multi_codec_port, multi_codec_port_idx++); 767 of_node_put(port_codec); 768 port_codec = ep_to_port(ep_codec); 769 } else { 770 of_node_get(ep_codec); 771 } 772 struct device_node *ports_codec __free(device_node) = port_to_ports(port_codec); 773 774 graph_parse_daifmt(ep_cpu, &daifmt); 775 graph_parse_daifmt(ep_codec, &daifmt); 776 graph_parse_daifmt(port_cpu, &daifmt); 777 graph_parse_daifmt(port_codec, &daifmt); 778 graph_parse_daifmt(ports_cpu, &daifmt); 779 graph_parse_daifmt(ports_codec, &daifmt); 780 graph_parse_daifmt(lnk, &daifmt); 781 782 graph_util_parse_link_direction(lnk, &playback_only, &capture_only); 783 graph_util_parse_link_direction(ports_cpu, &playback_only, &capture_only); 784 graph_util_parse_link_direction(ports_codec, &playback_only, &capture_only); 785 graph_util_parse_link_direction(port_cpu, &playback_only, &capture_only); 786 graph_util_parse_link_direction(port_codec, &playback_only, &capture_only); 787 graph_util_parse_link_direction(ep_cpu, &playback_only, &capture_only); 788 graph_util_parse_link_direction(ep_codec, &playback_only, &capture_only); 789 790 of_property_read_u32(lnk, "mclk-fs", &dai_props->mclk_fs); 791 of_property_read_u32(ports_cpu, "mclk-fs", &dai_props->mclk_fs); 792 of_property_read_u32(ports_codec, "mclk-fs", &dai_props->mclk_fs); 793 of_property_read_u32(port_cpu, "mclk-fs", &dai_props->mclk_fs); 794 of_property_read_u32(port_codec, "mclk-fs", &dai_props->mclk_fs); 795 of_property_read_u32(ep_cpu, "mclk-fs", &dai_props->mclk_fs); 796 of_property_read_u32(ep_codec, "mclk-fs", &dai_props->mclk_fs); 797 798 graph_util_parse_trigger_order(priv, lnk, &trigger_start, &trigger_stop); 799 graph_util_parse_trigger_order(priv, ports_cpu, &trigger_start, &trigger_stop); 800 graph_util_parse_trigger_order(priv, ports_codec, &trigger_start, &trigger_stop); 801 graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop); 802 graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop); 803 graph_util_parse_trigger_order(priv, ep_cpu, &trigger_start, &trigger_stop); 804 graph_util_parse_trigger_order(priv, ep_codec, &trigger_start, &trigger_stop); 805 806 for_each_link_cpus(dai_link, i, dlc) { 807 dlc->ext_fmt = graph_parse_bitframe(ep_cpu); 808 809 if (multi_cpu_port) 810 ep_cpu = graph_get_next_multi_ep(&multi_cpu_port, multi_cpu_port_idx++); 811 } 812 813 for_each_link_codecs(dai_link, i, dlc) { 814 dlc->ext_fmt = graph_parse_bitframe(ep_codec); 815 816 if (multi_codec_port) 817 ep_codec = graph_get_next_multi_ep(&multi_codec_port, multi_codec_port_idx++); 818 } 819 820 /*** Don't use port_cpu / port_codec after here ***/ 821 822 dai_link->playback_only = playback_only; 823 dai_link->capture_only = capture_only; 824 825 dai_link->trigger_start = trigger_start; 826 dai_link->trigger_stop = trigger_stop; 827 828 dai_link->dai_fmt = daifmt; 829 dai_link->init = simple_util_dai_init; 830 dai_link->ops = &graph_ops; 831 if (priv->ops) 832 dai_link->ops = priv->ops; 833 834 of_node_put(port_cpu); 835 of_node_put(port_codec); 836 of_node_put(ep_cpu); 837 of_node_put(ep_codec); 838} 839 840int audio_graph2_link_normal(struct simple_util_priv *priv, 841 struct device_node *lnk, 842 struct link_info *li) 843{ 844 struct device_node *cpu_port = lnk; 845 struct device_node *cpu_ep __free(device_node) = of_graph_get_next_port_endpoint(cpu_port, NULL); 846 struct device_node *codec_ep __free(device_node) = of_graph_get_remote_endpoint(cpu_ep); 847 int ret; 848 849 /* 850 * call Codec first. 851 * see 852 * __graph_parse_node() :: DAI Naming 853 */ 854 ret = graph_parse_node(priv, GRAPH_NORMAL, codec_ep, li, 0); 855 if (ret < 0) 856 goto end; 857 858 /* 859 * call CPU, and set DAI Name 860 */ 861 ret = graph_parse_node(priv, GRAPH_NORMAL, cpu_ep, li, 1); 862 if (ret < 0) 863 goto end; 864 865 graph_link_init(priv, lnk, cpu_ep, codec_ep, li, 1); 866 867end: 868 return graph_ret(priv, ret); 869} 870EXPORT_SYMBOL_GPL(audio_graph2_link_normal); 871 872int audio_graph2_link_dpcm(struct simple_util_priv *priv, 873 struct device_node *lnk, 874 struct link_info *li) 875{ 876 struct device_node *ep __free(device_node) = of_graph_get_next_port_endpoint(lnk, NULL); 877 struct device_node *rep __free(device_node) = of_graph_get_remote_endpoint(ep); 878 struct device_node *cpu_ep = NULL; 879 struct device_node *codec_ep = NULL; 880 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 881 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); 882 int is_cpu = graph_util_is_ports0(lnk); 883 int ret; 884 885 if (is_cpu) { 886 cpu_ep = rep; 887 888 /* 889 * dpcm { 890 * // Front-End 891 * ports@0 { 892 * => lnk: port@0 { ep: { ... = rep }; }; 893 * ... 894 * }; 895 * // Back-End 896 * ports@0 { 897 * ... 898 * }; 899 * }; 900 * 901 * CPU { 902 * rports: ports { 903 * rport: port@0 { rep: { ... = ep } }; 904 * } 905 * } 906 */ 907 /* 908 * setup CPU here, Codec is already set as dummy. 909 * see 910 * simple_util_init_priv() 911 */ 912 dai_link->dynamic = 1; 913 dai_link->dpcm_merged_format = 1; 914 915 ret = graph_parse_node(priv, GRAPH_DPCM, cpu_ep, li, 1); 916 if (ret) 917 return ret; 918 919 } else { 920 codec_ep = rep; 921 922 /* 923 * dpcm { 924 * // Front-End 925 * ports@0 { 926 * ... 927 * }; 928 * // Back-End 929 * ports@0 { 930 * => lnk: port@0 { ep: { ... = rep; }; }; 931 * ... 932 * }; 933 * }; 934 * 935 * Codec { 936 * rports: ports { 937 * rport: port@0 { rep: { ... = ep; }; }; 938 * } 939 * } 940 */ 941 /* 942 * setup Codec here, CPU is already set as dummy. 943 * see 944 * simple_util_init_priv() 945 */ 946 947 /* BE settings */ 948 dai_link->no_pcm = 1; 949 dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup; 950 951 ret = graph_parse_node(priv, GRAPH_DPCM, codec_ep, li, 0); 952 if (ret < 0) 953 return ret; 954 } 955 956 graph_parse_convert(ep, dai_props); /* at node of <dpcm> */ 957 graph_parse_convert(rep, dai_props); /* at node of <CPU/Codec> */ 958 959 graph_link_init(priv, lnk, cpu_ep, codec_ep, li, is_cpu); 960 961 return graph_ret(priv, ret); 962} 963EXPORT_SYMBOL_GPL(audio_graph2_link_dpcm); 964 965int audio_graph2_link_c2c(struct simple_util_priv *priv, 966 struct device_node *lnk, 967 struct link_info *li) 968{ 969 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); 970 struct device_node *port0 = lnk; 971 struct device_node *ports __free(device_node) = port_to_ports(port0); 972 struct device_node *port1 __free(device_node) = of_graph_get_next_port(ports, port0); 973 u32 val = 0; 974 int ret = -EINVAL; 975 976 /* 977 * codec2codec { 978 * ports { 979 * rate = <48000>; 980 * => lnk: port@0 { c2c0_ep: { ... = codec0_ep; }; }; 981 * port@1 { c2c1_ep: { ... = codec1_ep; }; }; 982 * }; 983 * }; 984 * 985 * Codec { 986 * ports { 987 * port@0 { codec0_ep: ... }; }; 988 * port@1 { codec1_ep: ... }; }; 989 * }; 990 * }; 991 */ 992 993 /* 994 * Card2 can use original Codec2Codec settings if DT has. 995 * It will use default settings if no settings on DT. 996 * see 997 * simple_util_init_for_codec2codec() 998 * 999 * Add more settings here if needed 1000 */ 1001 of_property_read_u32(ports, "rate", &val); 1002 if (val) { 1003 struct device *dev = simple_priv_to_dev(priv); 1004 struct snd_soc_pcm_stream *c2c_conf; 1005 1006 c2c_conf = devm_kzalloc(dev, sizeof(*c2c_conf), GFP_KERNEL); 1007 if (!c2c_conf) { 1008 /* 1009 * Clang doesn't allow to use "goto end" before calling __free(), 1010 * because it bypasses the initialization. Use graph_ret() directly. 1011 */ 1012 return graph_ret(priv, -ENOMEM); 1013 } 1014 1015 c2c_conf->formats = SNDRV_PCM_FMTBIT_S32_LE; /* update ME */ 1016 c2c_conf->rates = SNDRV_PCM_RATE_8000_384000; 1017 c2c_conf->rate_min = 1018 c2c_conf->rate_max = val; 1019 c2c_conf->channels_min = 1020 c2c_conf->channels_max = 2; /* update ME */ 1021 1022 dai_link->c2c_params = c2c_conf; 1023 dai_link->num_c2c_params = 1; 1024 } 1025 1026 struct device_node *ep0 __free(device_node) = of_graph_get_next_port_endpoint(port0, NULL); 1027 struct device_node *ep1 __free(device_node) = of_graph_get_next_port_endpoint(port1, NULL); 1028 1029 struct device_node *codec0_ep __free(device_node) = of_graph_get_remote_endpoint(ep0); 1030 struct device_node *codec1_ep __free(device_node) = of_graph_get_remote_endpoint(ep1); 1031 1032 /* 1033 * call Codec first. 1034 * see 1035 * __graph_parse_node() :: DAI Naming 1036 */ 1037 ret = graph_parse_node(priv, GRAPH_C2C, codec1_ep, li, 0); 1038 if (ret < 0) 1039 goto end; 1040 1041 /* 1042 * call CPU, and set DAI Name 1043 */ 1044 ret = graph_parse_node(priv, GRAPH_C2C, codec0_ep, li, 1); 1045 if (ret < 0) 1046 goto end; 1047 1048 graph_link_init(priv, lnk, codec0_ep, codec1_ep, li, 1); 1049end: 1050 return graph_ret(priv, ret); 1051} 1052EXPORT_SYMBOL_GPL(audio_graph2_link_c2c); 1053 1054static int graph_link(struct simple_util_priv *priv, 1055 struct graph2_custom_hooks *hooks, 1056 enum graph_type gtype, 1057 struct device_node *lnk, 1058 struct link_info *li) 1059{ 1060 struct device *dev = simple_priv_to_dev(priv); 1061 GRAPH2_CUSTOM func = NULL; 1062 int ret = -EINVAL; 1063 1064 switch (gtype) { 1065 case GRAPH_NORMAL: 1066 if (hooks && hooks->custom_normal) 1067 func = hooks->custom_normal; 1068 else 1069 func = audio_graph2_link_normal; 1070 break; 1071 case GRAPH_DPCM: 1072 if (hooks && hooks->custom_dpcm) 1073 func = hooks->custom_dpcm; 1074 else 1075 func = audio_graph2_link_dpcm; 1076 break; 1077 case GRAPH_C2C: 1078 if (hooks && hooks->custom_c2c) 1079 func = hooks->custom_c2c; 1080 else 1081 func = audio_graph2_link_c2c; 1082 break; 1083 default: 1084 break; 1085 } 1086 1087 if (!func) { 1088 dev_err(dev, "non supported gtype (%d)\n", gtype); 1089 goto err; 1090 } 1091 1092 ret = func(priv, lnk, li); 1093 if (ret < 0) 1094 goto err; 1095 1096 li->link++; 1097err: 1098 return graph_ret(priv, ret); 1099} 1100 1101static int graph_counter(struct device_node *lnk) 1102{ 1103 /* 1104 * Multi CPU / Codec 1105 * 1106 * multi { 1107 * ports { 1108 * => lnk: port@0 { ... }; // to pair 1109 * port@1 { ... }; // Multi Element 1110 * port@2 { ... }; // Multi Element 1111 * ... 1112 * }; 1113 * }; 1114 * 1115 * ignore first lnk part 1116 */ 1117 if (graph_lnk_is_multi(lnk)) { 1118 struct device_node *ports = port_to_ports(lnk); 1119 1120 /* 1121 * CPU/Codec = N:M case has many endpoints. 1122 * We can't use of_graph_get_endpoint_count() here 1123 */ 1124 return of_graph_get_port_count(ports) - 1; 1125 } 1126 /* 1127 * Single CPU / Codec 1128 */ 1129 else 1130 return 1; 1131} 1132 1133static int graph_count_normal(struct simple_util_priv *priv, 1134 struct device_node *lnk, 1135 struct link_info *li) 1136{ 1137 struct device_node *cpu_port = lnk; 1138 struct device_node *cpu_ep __free(device_node) = of_graph_get_next_port_endpoint(cpu_port, NULL); 1139 struct device_node *codec_port __free(device_node) = of_graph_get_remote_port(cpu_ep); 1140 1141 /* 1142 * CPU { 1143 * => lnk: port { endpoint { .. }; }; 1144 * }; 1145 */ 1146 /* 1147 * DON'T REMOVE platforms 1148 * see 1149 * simple-card.c :: simple_count_noml() 1150 */ 1151 li->num[li->link].cpus = 1152 li->num[li->link].platforms = graph_counter(cpu_port); 1153 1154 li->num[li->link].codecs = graph_counter(codec_port); 1155 1156 return 0; 1157} 1158 1159static int graph_count_dpcm(struct simple_util_priv *priv, 1160 struct device_node *lnk, 1161 struct link_info *li) 1162{ 1163 struct device_node *ep __free(device_node) = of_graph_get_next_port_endpoint(lnk, NULL); 1164 struct device_node *rport __free(device_node) = of_graph_get_remote_port(ep); 1165 1166 /* 1167 * dpcm { 1168 * // Front-End 1169 * ports@0 { 1170 * => lnk: port@0 { endpoint { ... }; }; 1171 * ... 1172 * }; 1173 * // Back-End 1174 * ports@1 { 1175 * => lnk: port@0 { endpoint { ... }; }; 1176 * ... 1177 * }; 1178 * }; 1179 */ 1180 1181 if (graph_util_is_ports0(lnk)) { 1182 /* 1183 * DON'T REMOVE platforms 1184 * see 1185 * simple-card.c :: simple_count_noml() 1186 */ 1187 li->num[li->link].cpus = graph_counter(rport); /* FE */ 1188 li->num[li->link].platforms = graph_counter(rport); 1189 } else { 1190 li->num[li->link].codecs = graph_counter(rport); /* BE */ 1191 } 1192 1193 return 0; 1194} 1195 1196static int graph_count_c2c(struct simple_util_priv *priv, 1197 struct device_node *lnk, 1198 struct link_info *li) 1199{ 1200 struct device_node *ports __free(device_node) = port_to_ports(lnk); 1201 struct device_node *port0 = of_node_get(lnk); 1202 struct device_node *port1 = of_node_get(of_graph_get_next_port(ports, of_node_get(port0))); 1203 struct device_node *ep0 __free(device_node) = of_graph_get_next_port_endpoint(port0, NULL); 1204 struct device_node *ep1 __free(device_node) = of_graph_get_next_port_endpoint(port1, NULL); 1205 struct device_node *codec0 __free(device_node) = of_graph_get_remote_port(ep0); 1206 struct device_node *codec1 __free(device_node) = of_graph_get_remote_port(ep1); 1207 1208 /* 1209 * codec2codec { 1210 * ports { 1211 * => lnk: port@0 { endpoint { ... }; }; 1212 * port@1 { endpoint { ... }; }; 1213 * }; 1214 * }; 1215 */ 1216 /* 1217 * DON'T REMOVE platforms 1218 * see 1219 * simple-card.c :: simple_count_noml() 1220 */ 1221 li->num[li->link].cpus = 1222 li->num[li->link].platforms = graph_counter(codec0); 1223 1224 li->num[li->link].codecs = graph_counter(codec1); 1225 1226 return 0; 1227} 1228 1229static int graph_count(struct simple_util_priv *priv, 1230 struct graph2_custom_hooks *hooks, 1231 enum graph_type gtype, 1232 struct device_node *lnk, 1233 struct link_info *li) 1234{ 1235 struct device *dev = simple_priv_to_dev(priv); 1236 GRAPH2_CUSTOM func = NULL; 1237 int ret = -EINVAL; 1238 1239 if (li->link >= SNDRV_MAX_LINKS) { 1240 dev_err(dev, "too many links\n"); 1241 return ret; 1242 } 1243 1244 switch (gtype) { 1245 case GRAPH_NORMAL: 1246 func = graph_count_normal; 1247 break; 1248 case GRAPH_DPCM: 1249 func = graph_count_dpcm; 1250 break; 1251 case GRAPH_C2C: 1252 func = graph_count_c2c; 1253 break; 1254 default: 1255 break; 1256 } 1257 1258 if (!func) { 1259 dev_err(dev, "non supported gtype (%d)\n", gtype); 1260 goto err; 1261 } 1262 1263 ret = func(priv, lnk, li); 1264 if (ret < 0) 1265 goto err; 1266 1267 li->link++; 1268err: 1269 return graph_ret(priv, ret); 1270} 1271 1272static int graph_for_each_link(struct simple_util_priv *priv, 1273 struct graph2_custom_hooks *hooks, 1274 struct link_info *li, 1275 int (*func)(struct simple_util_priv *priv, 1276 struct graph2_custom_hooks *hooks, 1277 enum graph_type gtype, 1278 struct device_node *lnk, 1279 struct link_info *li)) 1280{ 1281 struct of_phandle_iterator it; 1282 struct device *dev = simple_priv_to_dev(priv); 1283 struct device_node *node = dev->of_node; 1284 struct device_node *lnk; 1285 enum graph_type gtype; 1286 int rc, ret = 0; 1287 1288 /* loop for all listed CPU port */ 1289 of_for_each_phandle(&it, rc, node, "links", NULL, 0) { 1290 lnk = it.node; 1291 1292 gtype = graph_get_type(priv, lnk); 1293 1294 ret = func(priv, hooks, gtype, lnk, li); 1295 if (ret < 0) 1296 break; 1297 } 1298 1299 return graph_ret(priv, ret); 1300} 1301 1302int audio_graph2_parse_of(struct simple_util_priv *priv, struct device *dev, 1303 struct graph2_custom_hooks *hooks) 1304{ 1305 struct snd_soc_card *card = simple_priv_to_card(priv); 1306 int ret; 1307 1308 struct link_info *li __free(kfree) = kzalloc(sizeof(*li), GFP_KERNEL); 1309 if (!li) 1310 return -ENOMEM; 1311 1312 card->probe = graph_util_card_probe; 1313 card->owner = THIS_MODULE; 1314 card->dev = dev; 1315 1316 if ((hooks) && (hooks)->hook_pre) { 1317 ret = (hooks)->hook_pre(priv); 1318 if (ret < 0) 1319 goto err; 1320 } 1321 1322 ret = graph_for_each_link(priv, hooks, li, graph_count); 1323 if (!li->link) 1324 ret = -EINVAL; 1325 if (ret < 0) 1326 goto err; 1327 1328 ret = simple_util_init_priv(priv, li); 1329 if (ret < 0) 1330 goto err; 1331 1332 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); 1333 if (IS_ERR(priv->pa_gpio)) { 1334 ret = PTR_ERR(priv->pa_gpio); 1335 dev_err(dev, "failed to get amplifier gpio: %d\n", ret); 1336 goto err; 1337 } 1338 1339 ret = simple_util_parse_widgets(card, NULL); 1340 if (ret < 0) 1341 goto err; 1342 1343 ret = simple_util_parse_routing(card, NULL); 1344 if (ret < 0) 1345 goto err; 1346 1347 memset(li, 0, sizeof(*li)); 1348 ret = graph_for_each_link(priv, hooks, li, graph_link); 1349 if (ret < 0) 1350 goto err; 1351 1352 ret = simple_util_parse_card_name(priv, NULL); 1353 if (ret < 0) 1354 goto err; 1355 1356 snd_soc_card_set_drvdata(card, priv); 1357 1358 if ((hooks) && (hooks)->hook_post) { 1359 ret = (hooks)->hook_post(priv); 1360 if (ret < 0) 1361 goto err; 1362 } 1363 1364 simple_util_debug_info(priv); 1365 1366 ret = snd_soc_of_parse_aux_devs(card, "aux-devs"); 1367 if (ret < 0) 1368 goto err; 1369 1370 ret = devm_snd_soc_register_card(dev, card); 1371err: 1372 if (ret < 0) 1373 dev_err_probe(dev, ret, "parse error\n"); 1374 1375 return graph_ret(priv, ret); 1376} 1377EXPORT_SYMBOL_GPL(audio_graph2_parse_of); 1378 1379static int graph_probe(struct platform_device *pdev) 1380{ 1381 struct simple_util_priv *priv; 1382 struct device *dev = &pdev->dev; 1383 1384 /* Allocate the private data and the DAI link array */ 1385 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1386 if (!priv) 1387 return -ENOMEM; 1388 1389 return audio_graph2_parse_of(priv, dev, NULL); 1390} 1391 1392static const struct of_device_id graph_of_match[] = { 1393 { .compatible = "audio-graph-card2", }, 1394 {}, 1395}; 1396MODULE_DEVICE_TABLE(of, graph_of_match); 1397 1398static struct platform_driver graph_card = { 1399 .driver = { 1400 .name = "asoc-audio-graph-card2", 1401 .pm = &snd_soc_pm_ops, 1402 .of_match_table = graph_of_match, 1403 }, 1404 .probe = graph_probe, 1405 .remove = simple_util_remove, 1406}; 1407module_platform_driver(graph_card); 1408 1409MODULE_ALIAS("platform:asoc-audio-graph-card2"); 1410MODULE_LICENSE("GPL v2"); 1411MODULE_DESCRIPTION("ASoC Audio Graph Card2"); 1412MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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