sound/soc/sh/rcar/src.c

   1 /*
   2  * Renesas R-Car SRC support
   3  *
   4  * Copyright (C) 2013 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #include "rsnd.h"
  12
  13 struct rsnd_src {
  14         struct rsnd_src_platform_info *info; /* rcar_snd.h */
  15         struct rsnd_mod mod;
  16         struct clk *clk;
  17 };
  18
  19 #define RSND_SRC_NAME_SIZE 16
  20
  21 /*
  22  * ADINR
  23  */
  24 #define OTBL_24         (0 << 16)
  25 #define OTBL_22         (2 << 16)
  26 #define OTBL_20         (4 << 16)
  27 #define OTBL_18         (6 << 16)
  28 #define OTBL_16         (8 << 16)
  29
  30 #define rsnd_src_mode_flags(p) ((p)->info->flags)
  31 #define rsnd_src_convert_rate(p) ((p)->info->convert_rate)
  32 #define rsnd_mod_to_src(_mod)                           \
  33         container_of((_mod), struct rsnd_src, mod)
  34 #define rsnd_src_hpbif_is_enable(src)   \
  35         (rsnd_src_mode_flags(src) & RSND_SCU_USE_HPBIF)
  36 #define rsnd_src_dma_available(src) \
  37         rsnd_dma_available(rsnd_mod_to_dma(&(src)->mod))
  38
  39 #define for_each_rsnd_src(pos, priv, i)                         \
  40         for ((i) = 0;                                           \
  41              ((i) < rsnd_src_nr(priv)) &&                       \
  42              ((pos) = (struct rsnd_src *)(priv)->src + i);      \
  43              i++)
  44
  45
  46 /*
  47  *              image of SRC (Sampling Rate Converter)
  48  *
  49  * 96kHz   <-> +-----+  48kHz   +-----+  48kHz  +-------+
  50  * 48kHz   <-> | SRC | <------> | SSI | <-----> | codec |
  51  * 44.1kHz <-> +-----+          +-----+         +-------+
  52  * ...
  53  *
  54  */
  55
  56 /*
  57  * src.c is caring...
  58  *
  59  * Gen1
  60  *
  61  * [mem] -> [SRU] -> [SSI]
  62  *        |--------|
  63  *
  64  * Gen2
  65  *
  66  * [mem] -> [SRC] -> [SSIU] -> [SSI]
  67  *        |-----------------|
  68  */
  69
  70 /*
  71  *      How to use SRC bypass mode for debugging
  72  *
  73  * SRC has bypass mode, and it is useful for debugging.
  74  * In Gen2 case,
  75  * SRCm_MODE controls whether SRC is used or not
  76  * SSI_MODE0 controls whether SSIU which receives SRC data
  77  * is used or not.
  78  * Both SRCm_MODE/SSI_MODE0 settings are needed if you use SRC,
  79  * but SRC bypass mode needs SSI_MODE0 only.
  80  *
  81  * This driver request
  82  * struct rsnd_src_platform_info {
  83  *      u32 flags;
  84  *      u32 convert_rate;
  85  * }
  86  *
  87  * rsnd_src_hpbif_is_enable() will be true
  88  * if flags had RSND_SRC_USE_HPBIF,
  89  * and it controls whether SSIU is used or not.
  90  *
  91  * rsnd_src_convert_rate() indicates
  92  * above convert_rate, and it controls
  93  * whether SRC is used or not.
  94  *
  95  * ex) doesn't use SRC
  96  * struct rsnd_src_platform_info info = {
  97  *      .flags = 0,
  98  *      .convert_rate = 0,
  99  * };
 100  *
 101  * ex) uses SRC
 102  * struct rsnd_src_platform_info info = {
 103  *      .flags = RSND_SRC_USE_HPBIF,
 104  *      .convert_rate = 48000,
 105  * };
 106  *
 107  * ex) uses SRC bypass mode
 108  * struct rsnd_src_platform_info info = {
 109  *      .flags = RSND_SRC_USE_HPBIF,
 110  *      .convert_rate = 0,
 111  * };
 112  *
 113  */
 114
 115 /*
 116  *              Gen1/Gen2 common functions
 117  */
 118 int rsnd_src_ssi_mode_init(struct rsnd_mod *ssi_mod,
 119                            struct rsnd_dai *rdai,
 120                            struct rsnd_dai_stream *io)
 121 {
 122         struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
 123         struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
 124         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 125         int ssi_id = rsnd_mod_id(ssi_mod);
 126         int has_src = 0;
 127
 128         /*
 129          * SSI_MODE0
 130          */
 131         if (info->dai_info) {
 132                 has_src = !!src_mod;
 133         } else {
 134                 struct rsnd_src *src = rsnd_mod_to_src(src_mod);
 135                 has_src = rsnd_src_hpbif_is_enable(src);
 136         }
 137
 138         rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id),
 139                       has_src ? 0 : (1 << ssi_id));
 140
 141         /*
 142          * SSI_MODE1
 143          */
 144         if (rsnd_ssi_is_pin_sharing(ssi_mod)) {
 145                 int shift = -1;
 146                 switch (ssi_id) {
 147                 case 1:
 148                         shift = 0;
 149                         break;
 150                 case 2:
 151                         shift = 2;
 152                         break;
 153                 case 4:
 154                         shift = 16;
 155                         break;
 156                 }
 157
 158                 if (shift >= 0)
 159                         rsnd_mod_bset(ssi_mod, SSI_MODE1,
 160                                       0x3 << shift,
 161                                       rsnd_dai_is_clk_master(rdai) ?
 162                                       0x2 << shift : 0x1 << shift);
 163         }
 164
 165         return 0;
 166 }
 167
 168 int rsnd_src_enable_ssi_irq(struct rsnd_mod *ssi_mod,
 169                             struct rsnd_dai *rdai,
 170                             struct rsnd_dai_stream *io)
 171 {
 172         struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
 173
 174         /* enable PIO interrupt if Gen2 */
 175         if (rsnd_is_gen2(priv))
 176                 rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0f000000);
 177
 178         return 0;
 179 }
 180
 181 unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
 182                                    struct rsnd_dai_stream *io,
 183                                    struct snd_pcm_runtime *runtime)
 184 {
 185         struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
 186         struct rsnd_src *src;
 187         unsigned int rate = 0;
 188
 189         if (src_mod) {
 190                 src = rsnd_mod_to_src(src_mod);
 191
 192                 /*
 193                  * return convert rate if SRC is used,
 194                  * otherwise, return runtime->rate as usual
 195                  */
 196                 rate = rsnd_src_convert_rate(src);
 197         }
 198
 199         if (!rate)
 200                 rate = runtime->rate;
 201
 202         return rate;
 203 }
 204
 205 static int rsnd_src_set_convert_rate(struct rsnd_mod *mod,
 206                                      struct rsnd_dai *rdai,
 207                                      struct rsnd_dai_stream *io)
 208 {
 209         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 210         struct rsnd_src *src = rsnd_mod_to_src(mod);
 211         u32 convert_rate = rsnd_src_convert_rate(src);
 212         u32 adinr = runtime->channels;
 213         u32 fsrate = 0;
 214
 215         if (convert_rate)
 216                 fsrate = 0x0400000 / convert_rate * runtime->rate;
 217
 218         /* set/clear soft reset */
 219         rsnd_mod_write(mod, SRC_SWRSR, 0);
 220         rsnd_mod_write(mod, SRC_SWRSR, 1);
 221
 222         /*
 223          * Initialize the operation of the SRC internal circuits
 224          * see rsnd_src_start()
 225          */
 226         rsnd_mod_write(mod, SRC_SRCIR, 1);
 227
 228         /* Set channel number and output bit length */
 229         switch (runtime->sample_bits) {
 230         case 16:
 231                 adinr |= OTBL_16;
 232                 break;
 233         case 32:
 234                 adinr |= OTBL_24;
 235                 break;
 236         default:
 237                 return -EIO;
 238         }
 239         rsnd_mod_write(mod, SRC_ADINR, adinr);
 240
 241         /* Enable the initial value of IFS */
 242         if (fsrate) {
 243                 rsnd_mod_write(mod, SRC_IFSCR, 1);
 244
 245                 /* Set initial value of IFS */
 246                 rsnd_mod_write(mod, SRC_IFSVR, fsrate);
 247         }
 248
 249         /* use DMA transfer */
 250         rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
 251
 252         return 0;
 253 }
 254
 255 static int rsnd_src_init(struct rsnd_mod *mod,
 256                          struct rsnd_dai *rdai,
 257                          struct rsnd_dai_stream *io)
 258 {
 259         struct rsnd_src *src = rsnd_mod_to_src(mod);
 260
 261         clk_prepare_enable(src->clk);
 262
 263         return 0;
 264 }
 265
 266 static int rsnd_src_quit(struct rsnd_mod *mod,
 267                          struct rsnd_dai *rdai,
 268                          struct rsnd_dai_stream *io)
 269 {
 270         struct rsnd_src *src = rsnd_mod_to_src(mod);
 271
 272         clk_disable_unprepare(src->clk);
 273
 274         return 0;
 275 }
 276
 277 static int rsnd_src_start(struct rsnd_mod *mod,
 278                           struct rsnd_dai *rdai,
 279                           struct rsnd_dai_stream *io)
 280 {
 281         struct rsnd_src *src = rsnd_mod_to_src(mod);
 282
 283         /*
 284          * Cancel the initialization and operate the SRC function
 285          * see rsnd_src_set_convert_rate()
 286          */
 287         rsnd_mod_write(mod, SRC_SRCIR, 0);
 288
 289         if (rsnd_src_convert_rate(src))
 290                 rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
 291
 292         return 0;
 293 }
 294
 295
 296 static int rsnd_src_stop(struct rsnd_mod *mod,
 297                          struct rsnd_dai *rdai,
 298                          struct rsnd_dai_stream *io)
 299 {
 300         struct rsnd_src *src = rsnd_mod_to_src(mod);
 301
 302         if (rsnd_src_convert_rate(src))
 303                 rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);
 304
 305         return 0;
 306 }
 307
 308 static struct rsnd_mod_ops rsnd_src_non_ops = {
 309         .name   = "src (non)",
 310 };
 311
 312 /*
 313  *              Gen1 functions
 314  */
 315 static int rsnd_src_set_route_gen1(struct rsnd_mod *mod,
 316                                    struct rsnd_dai *rdai,
 317                                    struct rsnd_dai_stream *io)
 318 {
 319         struct src_route_config {
 320                 u32 mask;
 321                 int shift;
 322         } routes[] = {
 323                 { 0xF,  0, }, /* 0 */
 324                 { 0xF,  4, }, /* 1 */
 325                 { 0xF,  8, }, /* 2 */
 326                 { 0x7, 12, }, /* 3 */
 327                 { 0x7, 16, }, /* 4 */
 328                 { 0x7, 20, }, /* 5 */
 329                 { 0x7, 24, }, /* 6 */
 330                 { 0x3, 28, }, /* 7 */
 331                 { 0x3, 30, }, /* 8 */
 332         };
 333         u32 mask;
 334         u32 val;
 335         int id;
 336
 337         id = rsnd_mod_id(mod);
 338         if (id < 0 || id >= ARRAY_SIZE(routes))
 339                 return -EIO;
 340
 341         /*
 342          * SRC_ROUTE_SELECT
 343          */
 344         val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
 345         val = val               << routes[id].shift;
 346         mask = routes[id].mask  << routes[id].shift;
 347
 348         rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
 349
 350         return 0;
 351 }
 352
 353 static int rsnd_src_set_convert_timing_gen1(struct rsnd_mod *mod,
 354                                             struct rsnd_dai *rdai,
 355                                             struct rsnd_dai_stream *io)
 356 {
 357         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 358         struct rsnd_src *src = rsnd_mod_to_src(mod);
 359         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 360         u32 convert_rate = rsnd_src_convert_rate(src);
 361         u32 mask;
 362         u32 val;
 363         int shift;
 364         int id = rsnd_mod_id(mod);
 365         int ret;
 366
 367         /*
 368          * SRC_TIMING_SELECT
 369          */
 370         shift   = (id % 4) * 8;
 371         mask    = 0x1F << shift;
 372
 373         /*
 374          * ADG is used as source clock if SRC was used,
 375          * then, SSI WS is used as destination clock.
 376          * SSI WS is used as source clock if SRC is not used
 377          * (when playback, source/destination become reverse when capture)
 378          */
 379         ret = 0;
 380         if (convert_rate) {
 381                 /* use ADG */
 382                 val = 0;
 383                 ret = rsnd_adg_set_convert_clk_gen1(priv, mod,
 384                                                     runtime->rate,
 385                                                     convert_rate);
 386         } else if (8 == id) {
 387                 /* use SSI WS, but SRU8 is special */
 388                 val = id << shift;
 389         } else {
 390                 /* use SSI WS */
 391                 val = (id + 1) << shift;
 392         }
 393
 394         if (ret < 0)
 395                 return ret;
 396
 397         switch (id / 4) {
 398         case 0:
 399                 rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
 400                 break;
 401         case 1:
 402                 rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
 403                 break;
 404         case 2:
 405                 rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
 406                 break;
 407         }
 408
 409         return 0;
 410 }
 411
 412 static int rsnd_src_set_convert_rate_gen1(struct rsnd_mod *mod,
 413                                           struct rsnd_dai *rdai,
 414                                           struct rsnd_dai_stream *io)
 415 {
 416         int ret;
 417
 418         ret = rsnd_src_set_convert_rate(mod, rdai, io);
 419         if (ret < 0)
 420                 return ret;
 421
 422         /* Select SRC mode (fixed value) */
 423         rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
 424
 425         /* Set the restriction value of the FS ratio (98%) */
 426         rsnd_mod_write(mod, SRC_MNFSR,
 427                        rsnd_mod_read(mod, SRC_IFSVR) / 100 * 98);
 428
 429         /* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
 430
 431         return 0;
 432 }
 433
 434 static int rsnd_src_init_gen1(struct rsnd_mod *mod,
 435                               struct rsnd_dai *rdai,
 436                               struct rsnd_dai_stream *io)
 437 {
 438         int ret;
 439
 440         ret = rsnd_src_init(mod, rdai, io);
 441         if (ret < 0)
 442                 return ret;
 443
 444         ret = rsnd_src_set_route_gen1(mod, rdai, io);
 445         if (ret < 0)
 446                 return ret;
 447
 448         ret = rsnd_src_set_convert_rate_gen1(mod, rdai, io);
 449         if (ret < 0)
 450                 return ret;
 451
 452         ret = rsnd_src_set_convert_timing_gen1(mod, rdai, io);
 453         if (ret < 0)
 454                 return ret;
 455
 456         return 0;
 457 }
 458
 459 static int rsnd_src_start_gen1(struct rsnd_mod *mod,
 460                                struct rsnd_dai *rdai,
 461                                struct rsnd_dai_stream *io)
 462 {
 463         int id = rsnd_mod_id(mod);
 464
 465         rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id));
 466
 467         return rsnd_src_start(mod, rdai, io);
 468 }
 469
 470 static int rsnd_src_stop_gen1(struct rsnd_mod *mod,
 471                               struct rsnd_dai *rdai,
 472                               struct rsnd_dai_stream *io)
 473 {
 474         int id = rsnd_mod_id(mod);
 475
 476         rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0);
 477
 478         return rsnd_src_stop(mod, rdai, io);
 479 }
 480
 481 static struct rsnd_mod_ops rsnd_src_gen1_ops = {
 482         .name   = "sru (gen1)",
 483         .init   = rsnd_src_init_gen1,
 484         .quit   = rsnd_src_quit,
 485         .start  = rsnd_src_start_gen1,
 486         .stop   = rsnd_src_stop_gen1,
 487 };
 488
 489 /*
 490  *              Gen2 functions
 491  */
 492 static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod,
 493                                           struct rsnd_dai *rdai,
 494                                           struct rsnd_dai_stream *io)
 495 {
 496         int ret;
 497
 498         ret = rsnd_src_set_convert_rate(mod, rdai, io);
 499         if (ret < 0)
 500                 return ret;
 501
 502         rsnd_mod_write(mod, SSI_BUSIF_ADINR, rsnd_mod_read(mod, SRC_ADINR));
 503         rsnd_mod_write(mod, SSI_BUSIF_MODE,  rsnd_mod_read(mod, SRC_BUSIF_MODE));
 504
 505         rsnd_mod_write(mod, SRC_SRCCR, 0x00011110);
 506
 507         rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
 508         rsnd_mod_write(mod, SRC_BSISR, 0x00100060);
 509
 510         return 0;
 511 }
 512
 513 static int rsnd_src_set_convert_timing_gen2(struct rsnd_mod *mod,
 514                                             struct rsnd_dai *rdai,
 515                                             struct rsnd_dai_stream *io)
 516 {
 517         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 518         struct rsnd_src *src = rsnd_mod_to_src(mod);
 519         u32 convert_rate = rsnd_src_convert_rate(src);
 520         int ret;
 521
 522         if (convert_rate)
 523                 ret = rsnd_adg_set_convert_clk_gen2(mod, rdai, io,
 524                                                     runtime->rate,
 525                                                     convert_rate);
 526         else
 527                 ret = rsnd_adg_set_convert_timing_gen2(mod, rdai, io);
 528
 529         return ret;
 530 }
 531
 532 static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
 533                                struct rsnd_dai *rdai,
 534                                struct rsnd_dai_stream *io)
 535 {
 536         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 537         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 538         struct rsnd_src *src = rsnd_mod_to_src(mod);
 539         struct rsnd_mod *ssi = rsnd_ssi_mod_get(priv, rsnd_mod_id(mod));
 540         struct device *dev = rsnd_priv_to_dev(priv);
 541         int ret;
 542         int is_play;
 543
 544         if (info->dai_info)
 545                 is_play = rsnd_info_is_playback(priv, src);
 546         else
 547                 is_play = rsnd_ssi_is_play(ssi);
 548
 549         ret = rsnd_dma_init(priv,
 550                             rsnd_mod_to_dma(mod),
 551                             is_play,
 552                             src->info->dma_id);
 553         if (ret < 0)
 554                 dev_err(dev, "SRC DMA failed\n");
 555
 556         return ret;
 557 }
 558
 559 static int rsnd_src_remove_gen2(struct rsnd_mod *mod,
 560                                 struct rsnd_dai *rdai,
 561                                 struct rsnd_dai_stream *io)
 562 {
 563         rsnd_dma_quit(rsnd_mod_to_priv(mod), rsnd_mod_to_dma(mod));
 564
 565         return 0;
 566 }
 567
 568 static int rsnd_src_init_gen2(struct rsnd_mod *mod,
 569                               struct rsnd_dai *rdai,
 570                               struct rsnd_dai_stream *io)
 571 {
 572         int ret;
 573
 574         ret = rsnd_src_init(mod, rdai, io);
 575         if (ret < 0)
 576                 return ret;
 577
 578         ret = rsnd_src_set_convert_rate_gen2(mod, rdai, io);
 579         if (ret < 0)
 580                 return ret;
 581
 582         ret = rsnd_src_set_convert_timing_gen2(mod, rdai, io);
 583         if (ret < 0)
 584                 return ret;
 585
 586         return 0;
 587 }
 588
 589 static int rsnd_src_start_gen2(struct rsnd_mod *mod,
 590                                struct rsnd_dai *rdai,
 591                                struct rsnd_dai_stream *io)
 592 {
 593         struct rsnd_src *src = rsnd_mod_to_src(mod);
 594
 595         rsnd_dma_start(rsnd_mod_to_dma(&src->mod));
 596
 597         rsnd_mod_write(mod, SSI_CTRL, 0x1);
 598         rsnd_mod_write(mod, SRC_CTRL, 0x11);
 599
 600         return rsnd_src_start(mod, rdai, io);
 601 }
 602
 603 static int rsnd_src_stop_gen2(struct rsnd_mod *mod,
 604                               struct rsnd_dai *rdai,
 605                               struct rsnd_dai_stream *io)
 606 {
 607         struct rsnd_src *src = rsnd_mod_to_src(mod);
 608
 609         rsnd_mod_write(mod, SSI_CTRL, 0);
 610         rsnd_mod_write(mod, SRC_CTRL, 0);
 611
 612         rsnd_dma_stop(rsnd_mod_to_dma(&src->mod));
 613
 614         return rsnd_src_stop(mod, rdai, io);
 615 }
 616
 617 static struct rsnd_mod_ops rsnd_src_gen2_ops = {
 618         .name   = "src (gen2)",
 619         .probe  = rsnd_src_probe_gen2,
 620         .remove = rsnd_src_remove_gen2,
 621         .init   = rsnd_src_init_gen2,
 622         .quit   = rsnd_src_quit,
 623         .start  = rsnd_src_start_gen2,
 624         .stop   = rsnd_src_stop_gen2,
 625 };
 626
 627 struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id)
 628 {
 629         if (WARN_ON(id < 0 || id >= rsnd_src_nr(priv)))
 630                 id = 0;
 631
 632         return &((struct rsnd_src *)(priv->src) + id)->mod;
 633 }
 634
 635 static void rsnd_of_parse_src(struct platform_device *pdev,
 636                               const struct rsnd_of_data *of_data,
 637                               struct rsnd_priv *priv)
 638 {
 639         struct device_node *src_node;
 640         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 641         struct rsnd_src_platform_info *src_info;
 642         struct device *dev = &pdev->dev;
 643         int nr;
 644
 645         if (!of_data)
 646                 return;
 647
 648         src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
 649         if (!src_node)
 650                 return;
 651
 652         nr = of_get_child_count(src_node);
 653         if (!nr)
 654                 return;
 655
 656         src_info = devm_kzalloc(dev,
 657                                 sizeof(struct rsnd_src_platform_info) * nr,
 658                                 GFP_KERNEL);
 659         if (!src_info) {
 660                 dev_err(dev, "src info allocation error\n");
 661                 return;
 662         }
 663
 664         info->src_info          = src_info;
 665         info->src_info_nr       = nr;
 666 }
 667
 668 int rsnd_src_probe(struct platform_device *pdev,
 669                    const struct rsnd_of_data *of_data,
 670                    struct rsnd_priv *priv)
 671 {
 672         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 673         struct device *dev = rsnd_priv_to_dev(priv);
 674         struct rsnd_src *src;
 675         struct rsnd_mod_ops *ops;
 676         struct clk *clk;
 677         char name[RSND_SRC_NAME_SIZE];
 678         int i, nr;
 679
 680         rsnd_of_parse_src(pdev, of_data, priv);
 681
 682         /*
 683          * init SRC
 684          */
 685         nr      = info->src_info_nr;
 686         if (!nr)
 687                 return 0;
 688
 689         src     = devm_kzalloc(dev, sizeof(*src) * nr, GFP_KERNEL);
 690         if (!src) {
 691                 dev_err(dev, "SRC allocate failed\n");
 692                 return -ENOMEM;
 693         }
 694
 695         priv->src_nr    = nr;
 696         priv->src       = src;
 697
 698         for_each_rsnd_src(src, priv, i) {
 699                 snprintf(name, RSND_SRC_NAME_SIZE, "src.%d", i);
 700
 701                 clk = devm_clk_get(dev, name);
 702                 if (IS_ERR(clk)) {
 703                         snprintf(name, RSND_SRC_NAME_SIZE, "scu.%d", i);
 704                         clk = devm_clk_get(dev, name);
 705                 }
 706
 707                 if (IS_ERR(clk))
 708                         return PTR_ERR(clk);
 709
 710                 src->info = &info->src_info[i];
 711                 src->clk = clk;
 712
 713                 ops = &rsnd_src_non_ops;
 714                 if (rsnd_src_hpbif_is_enable(src)) {
 715                         if (rsnd_is_gen1(priv))
 716                                 ops = &rsnd_src_gen1_ops;
 717                         if (rsnd_is_gen2(priv))
 718                                 ops = &rsnd_src_gen2_ops;
 719                 }
 720
 721                 rsnd_mod_init(priv, &src->mod, ops, RSND_MOD_SRC, i);
 722
 723                 dev_dbg(dev, "SRC%d probed\n", i);
 724         }
 725
 726         return 0;
 727 }