1 /* 2 * Renesas R-Car SSIU/SSI support 3 * 4 * Copyright (C) 2013 Renesas Solutions Corp. 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * Based on fsi.c 8 * Kuninori Morimoto <morimoto.kuninori@renesas.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 #include <linux/delay.h> 15 #include "rsnd.h" 16 #define RSND_SSI_NAME_SIZE 16 17 18 /* 19 * SSICR 20 */ 21 #define FORCE (1 << 31) /* Fixed */ 22 #define DMEN (1 << 28) /* DMA Enable */ 23 #define UIEN (1 << 27) /* Underflow Interrupt Enable */ 24 #define OIEN (1 << 26) /* Overflow Interrupt Enable */ 25 #define IIEN (1 << 25) /* Idle Mode Interrupt Enable */ 26 #define DIEN (1 << 24) /* Data Interrupt Enable */ 27 28 #define DWL_8 (0 << 19) /* Data Word Length */ 29 #define DWL_16 (1 << 19) /* Data Word Length */ 30 #define DWL_18 (2 << 19) /* Data Word Length */ 31 #define DWL_20 (3 << 19) /* Data Word Length */ 32 #define DWL_22 (4 << 19) /* Data Word Length */ 33 #define DWL_24 (5 << 19) /* Data Word Length */ 34 #define DWL_32 (6 << 19) /* Data Word Length */ 35 36 #define SWL_32 (3 << 16) /* R/W System Word Length */ 37 #define SCKD (1 << 15) /* Serial Bit Clock Direction */ 38 #define SWSD (1 << 14) /* Serial WS Direction */ 39 #define SCKP (1 << 13) /* Serial Bit Clock Polarity */ 40 #define SWSP (1 << 12) /* Serial WS Polarity */ 41 #define SDTA (1 << 10) /* Serial Data Alignment */ 42 #define DEL (1 << 8) /* Serial Data Delay */ 43 #define CKDV(v) (v << 4) /* Serial Clock Division Ratio */ 44 #define TRMD (1 << 1) /* Transmit/Receive Mode Select */ 45 #define EN (1 << 0) /* SSI Module Enable */ 46 47 /* 48 * SSISR 49 */ 50 #define UIRQ (1 << 27) /* Underflow Error Interrupt Status */ 51 #define OIRQ (1 << 26) /* Overflow Error Interrupt Status */ 52 #define IIRQ (1 << 25) /* Idle Mode Interrupt Status */ 53 #define DIRQ (1 << 24) /* Data Interrupt Status Flag */ 54 55 /* 56 * SSIWSR 57 */ 58 #define CONT (1 << 8) /* WS Continue Function */ 59 60 struct rsnd_ssi { 61 struct clk *clk; 62 struct rsnd_ssi_platform_info *info; /* rcar_snd.h */ 63 struct rsnd_ssi *parent; 64 struct rsnd_mod mod; 65 66 struct rsnd_dai *rdai; 67 u32 cr_own; 68 u32 cr_clk; 69 u32 cr_etc; 70 int err; 71 unsigned int usrcnt; 72 unsigned int rate; 73 }; 74 75 #define for_each_rsnd_ssi(pos, priv, i) \ 76 for (i = 0; \ 77 (i < rsnd_ssi_nr(priv)) && \ 78 ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \ 79 i++) 80 81 #define rsnd_ssi_nr(priv) ((priv)->ssi_nr) 82 #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) 83 #define rsnd_dma_to_ssi(dma) rsnd_mod_to_ssi(rsnd_dma_to_mod(dma)) 84 #define rsnd_ssi_pio_available(ssi) ((ssi)->info->pio_irq > 0) 85 #define rsnd_ssi_dma_available(ssi) \ 86 rsnd_dma_available(rsnd_mod_to_dma(&(ssi)->mod)) 87 #define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent) 88 #define rsnd_ssi_mode_flags(p) ((p)->info->flags) 89 #define rsnd_ssi_dai_id(ssi) ((ssi)->info->dai_id) 90 91 static void rsnd_ssi_status_check(struct rsnd_mod *mod, 92 u32 bit) 93 { 94 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 95 struct device *dev = rsnd_priv_to_dev(priv); 96 u32 status; 97 int i; 98 99 for (i = 0; i < 1024; i++) { 100 status = rsnd_mod_read(mod, SSISR); 101 if (status & bit) 102 return; 103 104 udelay(50); 105 } 106 107 dev_warn(dev, "status check failed\n"); 108 } 109 110 static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi, 111 struct rsnd_dai_stream *io) 112 { 113 struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); 114 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 115 struct device *dev = rsnd_priv_to_dev(priv); 116 int i, j, ret; 117 int adg_clk_div_table[] = { 118 1, 6, /* see adg.c */ 119 }; 120 int ssi_clk_mul_table[] = { 121 1, 2, 4, 8, 16, 6, 12, 122 }; 123 unsigned int main_rate; 124 unsigned int rate = rsnd_src_get_ssi_rate(priv, io, runtime); 125 126 /* 127 * Find best clock, and try to start ADG 128 */ 129 for (i = 0; i < ARRAY_SIZE(adg_clk_div_table); i++) { 130 for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { 131 132 /* 133 * this driver is assuming that 134 * system word is 64fs (= 2 x 32bit) 135 * see rsnd_ssi_init() 136 */ 137 main_rate = rate / adg_clk_div_table[i] 138 * 32 * 2 * ssi_clk_mul_table[j]; 139 140 ret = rsnd_adg_ssi_clk_try_start(&ssi->mod, main_rate); 141 if (0 == ret) { 142 ssi->rate = rate; 143 ssi->cr_clk = FORCE | SWL_32 | 144 SCKD | SWSD | CKDV(j); 145 146 dev_dbg(dev, "ssi%d outputs %u Hz\n", 147 rsnd_mod_id(&ssi->mod), rate); 148 149 return 0; 150 } 151 } 152 } 153 154 dev_err(dev, "unsupported clock rate\n"); 155 return -EIO; 156 } 157 158 static void rsnd_ssi_master_clk_stop(struct rsnd_ssi *ssi) 159 { 160 ssi->rate = 0; 161 ssi->cr_clk = 0; 162 rsnd_adg_ssi_clk_stop(&ssi->mod); 163 } 164 165 static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi, 166 struct rsnd_dai *rdai, 167 struct rsnd_dai_stream *io) 168 { 169 struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); 170 struct device *dev = rsnd_priv_to_dev(priv); 171 u32 cr; 172 173 if (0 == ssi->usrcnt) { 174 clk_enable(ssi->clk); 175 176 if (rsnd_dai_is_clk_master(rdai)) { 177 if (rsnd_ssi_clk_from_parent(ssi)) 178 rsnd_ssi_hw_start(ssi->parent, rdai, io); 179 else 180 rsnd_ssi_master_clk_start(ssi, io); 181 } 182 } 183 184 cr = ssi->cr_own | 185 ssi->cr_clk | 186 ssi->cr_etc | 187 EN; 188 189 rsnd_mod_write(&ssi->mod, SSICR, cr); 190 191 ssi->usrcnt++; 192 193 dev_dbg(dev, "ssi%d hw started\n", rsnd_mod_id(&ssi->mod)); 194 } 195 196 static void rsnd_ssi_hw_stop(struct rsnd_ssi *ssi, 197 struct rsnd_dai *rdai) 198 { 199 struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); 200 struct device *dev = rsnd_priv_to_dev(priv); 201 u32 cr; 202 203 if (0 == ssi->usrcnt) /* stop might be called without start */ 204 return; 205 206 ssi->usrcnt--; 207 208 if (0 == ssi->usrcnt) { 209 /* 210 * disable all IRQ, 211 * and, wait all data was sent 212 */ 213 cr = ssi->cr_own | 214 ssi->cr_clk; 215 216 rsnd_mod_write(&ssi->mod, SSICR, cr | EN); 217 rsnd_ssi_status_check(&ssi->mod, DIRQ); 218 219 /* 220 * disable SSI, 221 * and, wait idle state 222 */ 223 rsnd_mod_write(&ssi->mod, SSICR, cr); /* disabled all */ 224 rsnd_ssi_status_check(&ssi->mod, IIRQ); 225 226 if (rsnd_dai_is_clk_master(rdai)) { 227 if (rsnd_ssi_clk_from_parent(ssi)) 228 rsnd_ssi_hw_stop(ssi->parent, rdai); 229 else 230 rsnd_ssi_master_clk_stop(ssi); 231 } 232 233 clk_disable(ssi->clk); 234 } 235 236 dev_dbg(dev, "ssi%d hw stopped\n", rsnd_mod_id(&ssi->mod)); 237 } 238 239 /* 240 * SSI mod common functions 241 */ 242 static int rsnd_ssi_init(struct rsnd_mod *mod, 243 struct rsnd_dai *rdai, 244 struct rsnd_dai_stream *io) 245 { 246 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 247 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 248 u32 cr; 249 250 cr = FORCE; 251 252 /* 253 * always use 32bit system word for easy clock calculation. 254 * see also rsnd_ssi_master_clk_enable() 255 */ 256 cr |= SWL_32; 257 258 /* 259 * init clock settings for SSICR 260 */ 261 switch (runtime->sample_bits) { 262 case 16: 263 cr |= DWL_16; 264 break; 265 case 32: 266 cr |= DWL_24; 267 break; 268 default: 269 return -EIO; 270 } 271 272 if (rdai->bit_clk_inv) 273 cr |= SCKP; 274 if (rdai->frm_clk_inv) 275 cr |= SWSP; 276 if (rdai->data_alignment) 277 cr |= SDTA; 278 if (rdai->sys_delay) 279 cr |= DEL; 280 if (rsnd_dai_is_play(rdai, io)) 281 cr |= TRMD; 282 283 /* 284 * set ssi parameter 285 */ 286 ssi->rdai = rdai; 287 ssi->cr_own = cr; 288 ssi->err = -1; /* ignore 1st error */ 289 290 rsnd_src_ssi_mode_init(mod, rdai, io); 291 292 return 0; 293 } 294 295 static int rsnd_ssi_quit(struct rsnd_mod *mod, 296 struct rsnd_dai *rdai, 297 struct rsnd_dai_stream *io) 298 { 299 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 300 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 301 struct device *dev = rsnd_priv_to_dev(priv); 302 303 if (ssi->err > 0) 304 dev_warn(dev, "ssi under/over flow err = %d\n", ssi->err); 305 306 ssi->rdai = NULL; 307 ssi->cr_own = 0; 308 ssi->err = 0; 309 310 return 0; 311 } 312 313 static void rsnd_ssi_record_error(struct rsnd_ssi *ssi, u32 status) 314 { 315 /* under/over flow error */ 316 if (status & (UIRQ | OIRQ)) { 317 ssi->err++; 318 319 /* clear error status */ 320 rsnd_mod_write(&ssi->mod, SSISR, 0); 321 } 322 } 323 324 /* 325 * SSI PIO 326 */ 327 static irqreturn_t rsnd_ssi_pio_interrupt(int irq, void *data) 328 { 329 struct rsnd_ssi *ssi = data; 330 struct rsnd_mod *mod = &ssi->mod; 331 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); 332 u32 status = rsnd_mod_read(mod, SSISR); 333 irqreturn_t ret = IRQ_NONE; 334 335 if (io && (status & DIRQ)) { 336 struct rsnd_dai *rdai = ssi->rdai; 337 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 338 u32 *buf = (u32 *)(runtime->dma_area + 339 rsnd_dai_pointer_offset(io, 0)); 340 341 rsnd_ssi_record_error(ssi, status); 342 343 /* 344 * 8/16/32 data can be assesse to TDR/RDR register 345 * directly as 32bit data 346 * see rsnd_ssi_init() 347 */ 348 if (rsnd_dai_is_play(rdai, io)) 349 rsnd_mod_write(mod, SSITDR, *buf); 350 else 351 *buf = rsnd_mod_read(mod, SSIRDR); 352 353 rsnd_dai_pointer_update(io, sizeof(*buf)); 354 355 ret = IRQ_HANDLED; 356 } 357 358 return ret; 359 } 360 361 static int rsnd_ssi_pio_probe(struct rsnd_mod *mod, 362 struct rsnd_dai *rdai, 363 struct rsnd_dai_stream *io) 364 { 365 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 366 struct device *dev = rsnd_priv_to_dev(priv); 367 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 368 int irq = ssi->info->pio_irq; 369 int ret; 370 371 ret = devm_request_irq(dev, irq, 372 rsnd_ssi_pio_interrupt, 373 IRQF_SHARED, 374 dev_name(dev), ssi); 375 if (ret) 376 dev_err(dev, "SSI request interrupt failed\n"); 377 378 return ret; 379 } 380 381 static int rsnd_ssi_pio_start(struct rsnd_mod *mod, 382 struct rsnd_dai *rdai, 383 struct rsnd_dai_stream *io) 384 { 385 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 386 387 /* enable PIO IRQ */ 388 ssi->cr_etc = UIEN | OIEN | DIEN; 389 390 rsnd_src_enable_ssi_irq(mod, rdai, io); 391 392 rsnd_ssi_hw_start(ssi, rdai, io); 393 394 return 0; 395 } 396 397 static int rsnd_ssi_pio_stop(struct rsnd_mod *mod, 398 struct rsnd_dai *rdai, 399 struct rsnd_dai_stream *io) 400 { 401 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 402 403 ssi->cr_etc = 0; 404 405 rsnd_ssi_hw_stop(ssi, rdai); 406 407 return 0; 408 } 409 410 static struct rsnd_mod_ops rsnd_ssi_pio_ops = { 411 .name = "ssi (pio)", 412 .probe = rsnd_ssi_pio_probe, 413 .init = rsnd_ssi_init, 414 .quit = rsnd_ssi_quit, 415 .start = rsnd_ssi_pio_start, 416 .stop = rsnd_ssi_pio_stop, 417 }; 418 419 static int rsnd_ssi_dma_probe(struct rsnd_mod *mod, 420 struct rsnd_dai *rdai, 421 struct rsnd_dai_stream *io) 422 { 423 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 424 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 425 struct rcar_snd_info *info = rsnd_priv_to_info(priv); 426 struct device *dev = rsnd_priv_to_dev(priv); 427 int dma_id = ssi->info->dma_id; 428 int is_play; 429 int ret; 430 431 if (info->dai_info) 432 is_play = rsnd_info_is_playback(priv, ssi); 433 else 434 is_play = rsnd_ssi_is_play(&ssi->mod); 435 436 ret = rsnd_dma_init( 437 priv, rsnd_mod_to_dma(mod), 438 is_play, 439 dma_id); 440 441 if (ret < 0) 442 dev_err(dev, "SSI DMA failed\n"); 443 444 return ret; 445 } 446 447 static int rsnd_ssi_dma_remove(struct rsnd_mod *mod, 448 struct rsnd_dai *rdai, 449 struct rsnd_dai_stream *io) 450 { 451 rsnd_dma_quit(rsnd_mod_to_priv(mod), rsnd_mod_to_dma(mod)); 452 453 return 0; 454 } 455 456 static int rsnd_ssi_dma_start(struct rsnd_mod *mod, 457 struct rsnd_dai *rdai, 458 struct rsnd_dai_stream *io) 459 { 460 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 461 struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); 462 463 /* enable DMA transfer */ 464 ssi->cr_etc = DMEN; 465 466 rsnd_dma_start(dma); 467 468 rsnd_ssi_hw_start(ssi, ssi->rdai, io); 469 470 /* enable WS continue */ 471 if (rsnd_dai_is_clk_master(rdai)) 472 rsnd_mod_write(&ssi->mod, SSIWSR, CONT); 473 474 return 0; 475 } 476 477 static int rsnd_ssi_dma_stop(struct rsnd_mod *mod, 478 struct rsnd_dai *rdai, 479 struct rsnd_dai_stream *io) 480 { 481 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 482 struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); 483 484 ssi->cr_etc = 0; 485 486 rsnd_ssi_record_error(ssi, rsnd_mod_read(mod, SSISR)); 487 488 rsnd_ssi_hw_stop(ssi, rdai); 489 490 rsnd_dma_stop(dma); 491 492 return 0; 493 } 494 495 static struct rsnd_mod_ops rsnd_ssi_dma_ops = { 496 .name = "ssi (dma)", 497 .probe = rsnd_ssi_dma_probe, 498 .remove = rsnd_ssi_dma_remove, 499 .init = rsnd_ssi_init, 500 .quit = rsnd_ssi_quit, 501 .start = rsnd_ssi_dma_start, 502 .stop = rsnd_ssi_dma_stop, 503 }; 504 505 /* 506 * Non SSI 507 */ 508 static struct rsnd_mod_ops rsnd_ssi_non_ops = { 509 .name = "ssi (non)", 510 }; 511 512 /* 513 * ssi mod function 514 */ 515 struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, 516 int dai_id, int is_play) 517 { 518 struct rsnd_dai_platform_info *dai_info = NULL; 519 struct rsnd_dai_path_info *path_info = NULL; 520 struct rsnd_ssi_platform_info *target_info = NULL; 521 struct rsnd_ssi *ssi; 522 int i, has_play; 523 524 if (priv->rdai) 525 dai_info = priv->rdai[dai_id].info; 526 if (dai_info) 527 path_info = (is_play) ? &dai_info->playback : &dai_info->capture; 528 if (path_info) 529 target_info = path_info->ssi; 530 531 is_play = !!is_play; 532 533 for_each_rsnd_ssi(ssi, priv, i) { 534 if (target_info == ssi->info) 535 return &ssi->mod; 536 537 /* for compatible */ 538 if (rsnd_ssi_dai_id(ssi) != dai_id) 539 continue; 540 541 has_play = rsnd_ssi_is_play(&ssi->mod); 542 543 if (is_play == has_play) 544 return &ssi->mod; 545 } 546 547 return NULL; 548 } 549 550 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) 551 { 552 if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv))) 553 id = 0; 554 555 return &((struct rsnd_ssi *)(priv->ssi) + id)->mod; 556 } 557 558 int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod) 559 { 560 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 561 562 return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE); 563 } 564 565 int rsnd_ssi_is_play(struct rsnd_mod *mod) 566 { 567 struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); 568 569 return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY); 570 } 571 572 static void rsnd_ssi_parent_clk_setup(struct rsnd_priv *priv, struct rsnd_ssi *ssi) 573 { 574 if (!rsnd_ssi_is_pin_sharing(&ssi->mod)) 575 return; 576 577 switch (rsnd_mod_id(&ssi->mod)) { 578 case 1: 579 case 2: 580 ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 0)); 581 break; 582 case 4: 583 ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 3)); 584 break; 585 case 8: 586 ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 7)); 587 break; 588 } 589 } 590 591 592 static void rsnd_of_parse_ssi(struct platform_device *pdev, 593 const struct rsnd_of_data *of_data, 594 struct rsnd_priv *priv) 595 { 596 struct device_node *node; 597 struct device_node *np; 598 struct rsnd_ssi_platform_info *ssi_info; 599 struct rcar_snd_info *info = rsnd_priv_to_info(priv); 600 struct device *dev = &pdev->dev; 601 int nr, i; 602 603 if (!of_data) 604 return; 605 606 node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); 607 if (!node) 608 return; 609 610 nr = of_get_child_count(node); 611 if (!nr) 612 return; 613 614 ssi_info = devm_kzalloc(dev, 615 sizeof(struct rsnd_ssi_platform_info) * nr, 616 GFP_KERNEL); 617 if (!ssi_info) { 618 dev_err(dev, "ssi info allocation error\n"); 619 return; 620 } 621 622 info->ssi_info = ssi_info; 623 info->ssi_info_nr = nr; 624 625 i = -1; 626 for_each_child_of_node(node, np) { 627 i++; 628 629 ssi_info = info->ssi_info + i; 630 631 /* 632 * pin settings 633 */ 634 if (of_get_property(np, "shared-pin", NULL)) 635 ssi_info->flags |= RSND_SSI_CLK_PIN_SHARE; 636 637 /* 638 * irq 639 */ 640 ssi_info->pio_irq = irq_of_parse_and_map(np, 0); 641 } 642 } 643 644 int rsnd_ssi_probe(struct platform_device *pdev, 645 const struct rsnd_of_data *of_data, 646 struct rsnd_priv *priv) 647 { 648 struct rcar_snd_info *info = rsnd_priv_to_info(priv); 649 struct rsnd_ssi_platform_info *pinfo; 650 struct device *dev = rsnd_priv_to_dev(priv); 651 struct rsnd_mod_ops *ops; 652 struct clk *clk; 653 struct rsnd_ssi *ssi; 654 char name[RSND_SSI_NAME_SIZE]; 655 int i, nr; 656 657 rsnd_of_parse_ssi(pdev, of_data, priv); 658 659 /* 660 * init SSI 661 */ 662 nr = info->ssi_info_nr; 663 ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL); 664 if (!ssi) { 665 dev_err(dev, "SSI allocate failed\n"); 666 return -ENOMEM; 667 } 668 669 priv->ssi = ssi; 670 priv->ssi_nr = nr; 671 672 for_each_rsnd_ssi(ssi, priv, i) { 673 pinfo = &info->ssi_info[i]; 674 675 snprintf(name, RSND_SSI_NAME_SIZE, "ssi.%d", i); 676 677 clk = devm_clk_get(dev, name); 678 if (IS_ERR(clk)) 679 return PTR_ERR(clk); 680 681 ssi->info = pinfo; 682 ssi->clk = clk; 683 684 ops = &rsnd_ssi_non_ops; 685 if (pinfo->dma_id > 0) 686 ops = &rsnd_ssi_dma_ops; 687 else if (rsnd_ssi_pio_available(ssi)) 688 ops = &rsnd_ssi_pio_ops; 689 690 rsnd_mod_init(priv, &ssi->mod, ops, RSND_MOD_SSI, i); 691 692 rsnd_ssi_parent_clk_setup(priv, ssi); 693 } 694 695 return 0; 696 } 697