1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Support for Digigram Lola PCI-e boards 4 * 5 * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> 6 */ 7 8 #include <linux/kernel.h> 9 #include <linux/init.h> 10 #include <linux/dma-mapping.h> 11 #include <linux/pci.h> 12 #include <linux/delay.h> 13 #include <sound/core.h> 14 #include <sound/pcm.h> 15 #include "lola.h" 16 17 #define LOLA_MAX_BDL_ENTRIES 8 18 #define LOLA_MAX_BUF_SIZE (1024*1024*1024) 19 #define LOLA_BDL_ENTRY_SIZE (16 * 16) 20 21 static struct lola_pcm *lola_get_pcm(struct snd_pcm_substream *substream) 22 { 23 struct lola *chip = snd_pcm_substream_chip(substream); 24 return &chip->pcm[substream->stream]; 25 } 26 27 static struct lola_stream *lola_get_stream(struct snd_pcm_substream *substream) 28 { 29 struct lola_pcm *pcm = lola_get_pcm(substream); 30 unsigned int idx = substream->number; 31 return &pcm->streams[idx]; 32 } 33 34 static unsigned int lola_get_lrc(struct lola *chip) 35 { 36 return lola_readl(chip, BAR1, LRC); 37 } 38 39 static unsigned int lola_get_tstamp(struct lola *chip, bool quick_no_sync) 40 { 41 unsigned int tstamp = lola_get_lrc(chip) >> 8; 42 if (chip->granularity) { 43 unsigned int wait_banks = quick_no_sync ? 0 : 8; 44 tstamp += (wait_banks + 1) * chip->granularity - 1; 45 tstamp -= tstamp % chip->granularity; 46 } 47 return tstamp << 8; 48 } 49 50 /* clear any pending interrupt status */ 51 static void lola_stream_clear_pending_irq(struct lola *chip, 52 struct lola_stream *str) 53 { 54 unsigned int val = lola_dsd_read(chip, str->dsd, STS); 55 val &= LOLA_DSD_STS_DESE | LOLA_DSD_STS_BCIS; 56 if (val) 57 lola_dsd_write(chip, str->dsd, STS, val); 58 } 59 60 static void lola_stream_start(struct lola *chip, struct lola_stream *str, 61 unsigned int tstamp) 62 { 63 lola_stream_clear_pending_irq(chip, str); 64 lola_dsd_write(chip, str->dsd, CTL, 65 LOLA_DSD_CTL_SRUN | 66 LOLA_DSD_CTL_IOCE | 67 LOLA_DSD_CTL_DEIE | 68 LOLA_DSD_CTL_VLRCV | 69 tstamp); 70 } 71 72 static void lola_stream_stop(struct lola *chip, struct lola_stream *str, 73 unsigned int tstamp) 74 { 75 lola_dsd_write(chip, str->dsd, CTL, 76 LOLA_DSD_CTL_IOCE | 77 LOLA_DSD_CTL_DEIE | 78 LOLA_DSD_CTL_VLRCV | 79 tstamp); 80 lola_stream_clear_pending_irq(chip, str); 81 } 82 83 static void wait_for_srst_clear(struct lola *chip, struct lola_stream *str) 84 { 85 unsigned long end_time = jiffies + msecs_to_jiffies(200); 86 while (time_before(jiffies, end_time)) { 87 unsigned int val; 88 val = lola_dsd_read(chip, str->dsd, CTL); 89 if (!(val & LOLA_DSD_CTL_SRST)) 90 return; 91 msleep(1); 92 } 93 dev_warn(chip->card->dev, "SRST not clear (stream %d)\n", str->dsd); 94 } 95 96 static int lola_stream_wait_for_fifo(struct lola *chip, 97 struct lola_stream *str, 98 bool ready) 99 { 100 unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; 101 unsigned long end_time = jiffies + msecs_to_jiffies(200); 102 while (time_before(jiffies, end_time)) { 103 unsigned int reg = lola_dsd_read(chip, str->dsd, STS); 104 if ((reg & LOLA_DSD_STS_FIFORDY) == val) 105 return 0; 106 msleep(1); 107 } 108 dev_warn(chip->card->dev, "FIFO not ready (stream %d)\n", str->dsd); 109 return -EIO; 110 } 111 112 /* sync for FIFO ready/empty for all linked streams; 113 * clear paused flag when FIFO gets ready again 114 */ 115 static int lola_sync_wait_for_fifo(struct lola *chip, 116 struct snd_pcm_substream *substream, 117 bool ready) 118 { 119 unsigned int val = ready ? LOLA_DSD_STS_FIFORDY : 0; 120 unsigned long end_time = jiffies + msecs_to_jiffies(200); 121 struct snd_pcm_substream *s; 122 int pending = 0; 123 124 while (time_before(jiffies, end_time)) { 125 pending = 0; 126 snd_pcm_group_for_each_entry(s, substream) { 127 struct lola_stream *str; 128 if (s->pcm->card != substream->pcm->card) 129 continue; 130 str = lola_get_stream(s); 131 if (str->prepared && str->paused) { 132 unsigned int reg; 133 reg = lola_dsd_read(chip, str->dsd, STS); 134 if ((reg & LOLA_DSD_STS_FIFORDY) != val) { 135 pending = str->dsd + 1; 136 break; 137 } 138 if (ready) 139 str->paused = 0; 140 } 141 } 142 if (!pending) 143 return 0; 144 msleep(1); 145 } 146 dev_warn(chip->card->dev, "FIFO not ready (pending %d)\n", pending - 1); 147 return -EIO; 148 } 149 150 /* finish pause - prepare for a new resume */ 151 static void lola_sync_pause(struct lola *chip, 152 struct snd_pcm_substream *substream) 153 { 154 struct snd_pcm_substream *s; 155 156 lola_sync_wait_for_fifo(chip, substream, false); 157 snd_pcm_group_for_each_entry(s, substream) { 158 struct lola_stream *str; 159 if (s->pcm->card != substream->pcm->card) 160 continue; 161 str = lola_get_stream(s); 162 if (str->paused && str->prepared) 163 lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRUN | 164 LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); 165 } 166 lola_sync_wait_for_fifo(chip, substream, true); 167 } 168 169 static void lola_stream_reset(struct lola *chip, struct lola_stream *str) 170 { 171 if (str->prepared) { 172 if (str->paused) 173 lola_sync_pause(chip, str->substream); 174 str->prepared = 0; 175 lola_dsd_write(chip, str->dsd, CTL, 176 LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE); 177 lola_stream_wait_for_fifo(chip, str, false); 178 lola_stream_clear_pending_irq(chip, str); 179 lola_dsd_write(chip, str->dsd, CTL, LOLA_DSD_CTL_SRST); 180 lola_dsd_write(chip, str->dsd, LVI, 0); 181 lola_dsd_write(chip, str->dsd, BDPU, 0); 182 lola_dsd_write(chip, str->dsd, BDPL, 0); 183 wait_for_srst_clear(chip, str); 184 } 185 } 186 187 static const struct snd_pcm_hardware lola_pcm_hw = { 188 .info = (SNDRV_PCM_INFO_MMAP | 189 SNDRV_PCM_INFO_INTERLEAVED | 190 SNDRV_PCM_INFO_BLOCK_TRANSFER | 191 SNDRV_PCM_INFO_MMAP_VALID | 192 SNDRV_PCM_INFO_PAUSE), 193 .formats = (SNDRV_PCM_FMTBIT_S16_LE | 194 SNDRV_PCM_FMTBIT_S24_LE | 195 SNDRV_PCM_FMTBIT_S32_LE | 196 SNDRV_PCM_FMTBIT_FLOAT_LE), 197 .rates = SNDRV_PCM_RATE_8000_192000, 198 .rate_min = 8000, 199 .rate_max = 192000, 200 .channels_min = 1, 201 .channels_max = 2, 202 .buffer_bytes_max = LOLA_MAX_BUF_SIZE, 203 .period_bytes_min = 128, 204 .period_bytes_max = LOLA_MAX_BUF_SIZE / 2, 205 .periods_min = 2, 206 .periods_max = LOLA_MAX_BDL_ENTRIES, 207 .fifo_size = 0, 208 }; 209 210 static int lola_pcm_open(struct snd_pcm_substream *substream) 211 { 212 struct lola *chip = snd_pcm_substream_chip(substream); 213 struct lola_pcm *pcm = lola_get_pcm(substream); 214 struct lola_stream *str = lola_get_stream(substream); 215 struct snd_pcm_runtime *runtime = substream->runtime; 216 217 mutex_lock(&chip->open_mutex); 218 if (str->opened) { 219 mutex_unlock(&chip->open_mutex); 220 return -EBUSY; 221 } 222 str->substream = substream; 223 str->master = NULL; 224 str->opened = 1; 225 runtime->hw = lola_pcm_hw; 226 runtime->hw.channels_max = pcm->num_streams - str->index; 227 if (chip->sample_rate) { 228 /* sample rate is locked */ 229 runtime->hw.rate_min = chip->sample_rate; 230 runtime->hw.rate_max = chip->sample_rate; 231 } else { 232 runtime->hw.rate_min = chip->sample_rate_min; 233 runtime->hw.rate_max = chip->sample_rate_max; 234 } 235 chip->ref_count_rate++; 236 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 237 /* period size = multiple of chip->granularity (8, 16 or 32 frames)*/ 238 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 239 chip->granularity); 240 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 241 chip->granularity); 242 mutex_unlock(&chip->open_mutex); 243 return 0; 244 } 245 246 static void lola_cleanup_slave_streams(struct lola_pcm *pcm, 247 struct lola_stream *str) 248 { 249 int i; 250 for (i = str->index + 1; i < pcm->num_streams; i++) { 251 struct lola_stream *s = &pcm->streams[i]; 252 if (s->master != str) 253 break; 254 s->master = NULL; 255 s->opened = 0; 256 } 257 } 258 259 static int lola_pcm_close(struct snd_pcm_substream *substream) 260 { 261 struct lola *chip = snd_pcm_substream_chip(substream); 262 struct lola_stream *str = lola_get_stream(substream); 263 264 mutex_lock(&chip->open_mutex); 265 if (str->substream == substream) { 266 str->substream = NULL; 267 str->opened = 0; 268 } 269 if (--chip->ref_count_rate == 0) { 270 /* release sample rate */ 271 chip->sample_rate = 0; 272 } 273 mutex_unlock(&chip->open_mutex); 274 return 0; 275 } 276 277 static int lola_pcm_hw_params(struct snd_pcm_substream *substream, 278 struct snd_pcm_hw_params *hw_params) 279 { 280 struct lola_stream *str = lola_get_stream(substream); 281 282 str->bufsize = 0; 283 str->period_bytes = 0; 284 str->format_verb = 0; 285 return snd_pcm_lib_malloc_pages(substream, 286 params_buffer_bytes(hw_params)); 287 } 288 289 static int lola_pcm_hw_free(struct snd_pcm_substream *substream) 290 { 291 struct lola *chip = snd_pcm_substream_chip(substream); 292 struct lola_pcm *pcm = lola_get_pcm(substream); 293 struct lola_stream *str = lola_get_stream(substream); 294 295 mutex_lock(&chip->open_mutex); 296 lola_stream_reset(chip, str); 297 lola_cleanup_slave_streams(pcm, str); 298 mutex_unlock(&chip->open_mutex); 299 return snd_pcm_lib_free_pages(substream); 300 } 301 302 /* 303 * set up a BDL entry 304 */ 305 static int setup_bdle(struct snd_pcm_substream *substream, 306 struct lola_stream *str, __le32 **bdlp, 307 int ofs, int size) 308 { 309 __le32 *bdl = *bdlp; 310 311 while (size > 0) { 312 dma_addr_t addr; 313 int chunk; 314 315 if (str->frags >= LOLA_MAX_BDL_ENTRIES) 316 return -EINVAL; 317 318 addr = snd_pcm_sgbuf_get_addr(substream, ofs); 319 /* program the address field of the BDL entry */ 320 bdl[0] = cpu_to_le32((u32)addr); 321 bdl[1] = cpu_to_le32(upper_32_bits(addr)); 322 /* program the size field of the BDL entry */ 323 chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size); 324 bdl[2] = cpu_to_le32(chunk); 325 /* program the IOC to enable interrupt 326 * only when the whole fragment is processed 327 */ 328 size -= chunk; 329 bdl[3] = size ? 0 : cpu_to_le32(0x01); 330 bdl += 4; 331 str->frags++; 332 ofs += chunk; 333 } 334 *bdlp = bdl; 335 return ofs; 336 } 337 338 /* 339 * set up BDL entries 340 */ 341 static int lola_setup_periods(struct lola *chip, struct lola_pcm *pcm, 342 struct snd_pcm_substream *substream, 343 struct lola_stream *str) 344 { 345 __le32 *bdl; 346 int i, ofs, periods, period_bytes; 347 348 period_bytes = str->period_bytes; 349 periods = str->bufsize / period_bytes; 350 351 /* program the initial BDL entries */ 352 bdl = (__le32 *)(pcm->bdl.area + LOLA_BDL_ENTRY_SIZE * str->index); 353 ofs = 0; 354 str->frags = 0; 355 for (i = 0; i < periods; i++) { 356 ofs = setup_bdle(substream, str, &bdl, ofs, period_bytes); 357 if (ofs < 0) 358 goto error; 359 } 360 return 0; 361 362 error: 363 dev_err(chip->card->dev, "Too many BDL entries: buffer=%d, period=%d\n", 364 str->bufsize, period_bytes); 365 return -EINVAL; 366 } 367 368 static unsigned int lola_get_format_verb(struct snd_pcm_substream *substream) 369 { 370 unsigned int verb; 371 372 switch (substream->runtime->format) { 373 case SNDRV_PCM_FORMAT_S16_LE: 374 verb = 0x00000000; 375 break; 376 case SNDRV_PCM_FORMAT_S24_LE: 377 verb = 0x00000200; 378 break; 379 case SNDRV_PCM_FORMAT_S32_LE: 380 verb = 0x00000300; 381 break; 382 case SNDRV_PCM_FORMAT_FLOAT_LE: 383 verb = 0x00001300; 384 break; 385 default: 386 return 0; 387 } 388 verb |= substream->runtime->channels; 389 return verb; 390 } 391 392 static int lola_set_stream_config(struct lola *chip, 393 struct lola_stream *str, 394 int channels) 395 { 396 int i, err; 397 unsigned int verb, val; 398 399 /* set format info for all channels 400 * (with only one command for the first channel) 401 */ 402 err = lola_codec_read(chip, str->nid, LOLA_VERB_SET_STREAM_FORMAT, 403 str->format_verb, 0, &val, NULL); 404 if (err < 0) { 405 dev_err(chip->card->dev, "Cannot set stream format 0x%x\n", 406 str->format_verb); 407 return err; 408 } 409 410 /* update stream - channel config */ 411 for (i = 0; i < channels; i++) { 412 verb = (str->index << 6) | i; 413 err = lola_codec_read(chip, str[i].nid, 414 LOLA_VERB_SET_CHANNEL_STREAMID, 0, verb, 415 &val, NULL); 416 if (err < 0) { 417 dev_err(chip->card->dev, 418 "Cannot set stream channel %d\n", i); 419 return err; 420 } 421 } 422 return 0; 423 } 424 425 /* 426 * set up the SD for streaming 427 */ 428 static int lola_setup_controller(struct lola *chip, struct lola_pcm *pcm, 429 struct lola_stream *str) 430 { 431 dma_addr_t bdl; 432 433 if (str->prepared) 434 return -EINVAL; 435 436 /* set up BDL */ 437 bdl = pcm->bdl.addr + LOLA_BDL_ENTRY_SIZE * str->index; 438 lola_dsd_write(chip, str->dsd, BDPL, (u32)bdl); 439 lola_dsd_write(chip, str->dsd, BDPU, upper_32_bits(bdl)); 440 /* program the stream LVI (last valid index) of the BDL */ 441 lola_dsd_write(chip, str->dsd, LVI, str->frags - 1); 442 lola_stream_clear_pending_irq(chip, str); 443 444 lola_dsd_write(chip, str->dsd, CTL, 445 LOLA_DSD_CTL_IOCE | LOLA_DSD_CTL_DEIE | LOLA_DSD_CTL_SRUN); 446 447 str->prepared = 1; 448 449 return lola_stream_wait_for_fifo(chip, str, true); 450 } 451 452 static int lola_pcm_prepare(struct snd_pcm_substream *substream) 453 { 454 struct lola *chip = snd_pcm_substream_chip(substream); 455 struct lola_pcm *pcm = lola_get_pcm(substream); 456 struct lola_stream *str = lola_get_stream(substream); 457 struct snd_pcm_runtime *runtime = substream->runtime; 458 unsigned int bufsize, period_bytes, format_verb; 459 int i, err; 460 461 mutex_lock(&chip->open_mutex); 462 lola_stream_reset(chip, str); 463 lola_cleanup_slave_streams(pcm, str); 464 if (str->index + runtime->channels > pcm->num_streams) { 465 mutex_unlock(&chip->open_mutex); 466 return -EINVAL; 467 } 468 for (i = 1; i < runtime->channels; i++) { 469 str[i].master = str; 470 str[i].opened = 1; 471 } 472 mutex_unlock(&chip->open_mutex); 473 474 bufsize = snd_pcm_lib_buffer_bytes(substream); 475 period_bytes = snd_pcm_lib_period_bytes(substream); 476 format_verb = lola_get_format_verb(substream); 477 478 str->bufsize = bufsize; 479 str->period_bytes = period_bytes; 480 str->format_verb = format_verb; 481 482 err = lola_setup_periods(chip, pcm, substream, str); 483 if (err < 0) 484 return err; 485 486 err = lola_set_sample_rate(chip, runtime->rate); 487 if (err < 0) 488 return err; 489 chip->sample_rate = runtime->rate; /* sample rate gets locked */ 490 491 err = lola_set_stream_config(chip, str, runtime->channels); 492 if (err < 0) 493 return err; 494 495 err = lola_setup_controller(chip, pcm, str); 496 if (err < 0) { 497 lola_stream_reset(chip, str); 498 return err; 499 } 500 501 return 0; 502 } 503 504 static int lola_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 505 { 506 struct lola *chip = snd_pcm_substream_chip(substream); 507 struct lola_stream *str; 508 struct snd_pcm_substream *s; 509 unsigned int start; 510 unsigned int tstamp; 511 bool sync_streams; 512 513 switch (cmd) { 514 case SNDRV_PCM_TRIGGER_START: 515 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 516 case SNDRV_PCM_TRIGGER_RESUME: 517 start = 1; 518 break; 519 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 520 case SNDRV_PCM_TRIGGER_SUSPEND: 521 case SNDRV_PCM_TRIGGER_STOP: 522 start = 0; 523 break; 524 default: 525 return -EINVAL; 526 } 527 528 /* 529 * sample correct synchronization is only needed starting several 530 * streams. On stop or if only one stream do as quick as possible 531 */ 532 sync_streams = (start && snd_pcm_stream_linked(substream)); 533 tstamp = lola_get_tstamp(chip, !sync_streams); 534 spin_lock(&chip->reg_lock); 535 snd_pcm_group_for_each_entry(s, substream) { 536 if (s->pcm->card != substream->pcm->card) 537 continue; 538 str = lola_get_stream(s); 539 if (start) 540 lola_stream_start(chip, str, tstamp); 541 else 542 lola_stream_stop(chip, str, tstamp); 543 str->running = start; 544 str->paused = !start; 545 snd_pcm_trigger_done(s, substream); 546 } 547 spin_unlock(&chip->reg_lock); 548 return 0; 549 } 550 551 static snd_pcm_uframes_t lola_pcm_pointer(struct snd_pcm_substream *substream) 552 { 553 struct lola *chip = snd_pcm_substream_chip(substream); 554 struct lola_stream *str = lola_get_stream(substream); 555 unsigned int pos = lola_dsd_read(chip, str->dsd, LPIB); 556 557 if (pos >= str->bufsize) 558 pos = 0; 559 return bytes_to_frames(substream->runtime, pos); 560 } 561 562 void lola_pcm_update(struct lola *chip, struct lola_pcm *pcm, unsigned int bits) 563 { 564 int i; 565 566 for (i = 0; bits && i < pcm->num_streams; i++) { 567 if (bits & (1 << i)) { 568 struct lola_stream *str = &pcm->streams[i]; 569 if (str->substream && str->running) 570 snd_pcm_period_elapsed(str->substream); 571 bits &= ~(1 << i); 572 } 573 } 574 } 575 576 static const struct snd_pcm_ops lola_pcm_ops = { 577 .open = lola_pcm_open, 578 .close = lola_pcm_close, 579 .ioctl = snd_pcm_lib_ioctl, 580 .hw_params = lola_pcm_hw_params, 581 .hw_free = lola_pcm_hw_free, 582 .prepare = lola_pcm_prepare, 583 .trigger = lola_pcm_trigger, 584 .pointer = lola_pcm_pointer, 585 }; 586 587 int lola_create_pcm(struct lola *chip) 588 { 589 struct snd_pcm *pcm; 590 int i, err; 591 592 for (i = 0; i < 2; i++) { 593 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, 594 &chip->pci->dev, 595 PAGE_SIZE, &chip->pcm[i].bdl); 596 if (err < 0) 597 return err; 598 } 599 600 err = snd_pcm_new(chip->card, "Digigram Lola", 0, 601 chip->pcm[SNDRV_PCM_STREAM_PLAYBACK].num_streams, 602 chip->pcm[SNDRV_PCM_STREAM_CAPTURE].num_streams, 603 &pcm); 604 if (err < 0) 605 return err; 606 strlcpy(pcm->name, "Digigram Lola", sizeof(pcm->name)); 607 pcm->private_data = chip; 608 for (i = 0; i < 2; i++) { 609 if (chip->pcm[i].num_streams) 610 snd_pcm_set_ops(pcm, i, &lola_pcm_ops); 611 } 612 /* buffer pre-allocation */ 613 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 614 &chip->pci->dev, 615 1024 * 64, 32 * 1024 * 1024); 616 return 0; 617 } 618 619 void lola_free_pcm(struct lola *chip) 620 { 621 snd_dma_free_pages(&chip->pcm[0].bdl); 622 snd_dma_free_pages(&chip->pcm[1].bdl); 623 } 624 625 /* 626 */ 627 628 static int lola_init_stream(struct lola *chip, struct lola_stream *str, 629 int idx, int nid, int dir) 630 { 631 unsigned int val; 632 int err; 633 634 str->nid = nid; 635 str->index = idx; 636 str->dsd = idx; 637 if (dir == PLAY) 638 str->dsd += MAX_STREAM_IN_COUNT; 639 err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val); 640 if (err < 0) { 641 dev_err(chip->card->dev, "Can't read wcaps for 0x%x\n", nid); 642 return err; 643 } 644 if (dir == PLAY) { 645 /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) */ 646 if ((val & 0x00f00dff) != 0x00000010) { 647 dev_err(chip->card->dev, 648 "Invalid wcaps 0x%x for 0x%x\n", 649 val, nid); 650 return -EINVAL; 651 } 652 } else { 653 /* test TYPE and bits 0..11 (no test bit9 : Digital = 0/1) 654 * (bug : ignore bit8: Conn list = 0/1) 655 */ 656 if ((val & 0x00f00cff) != 0x00100010) { 657 dev_err(chip->card->dev, 658 "Invalid wcaps 0x%x for 0x%x\n", 659 val, nid); 660 return -EINVAL; 661 } 662 /* test bit9:DIGITAL and bit12:SRC_PRESENT*/ 663 if ((val & 0x00001200) == 0x00001200) 664 chip->input_src_caps_mask |= (1 << idx); 665 } 666 667 err = lola_read_param(chip, nid, LOLA_PAR_STREAM_FORMATS, &val); 668 if (err < 0) { 669 dev_err(chip->card->dev, "Can't read FORMATS 0x%x\n", nid); 670 return err; 671 } 672 val &= 3; 673 if (val == 3) 674 str->can_float = true; 675 if (!(val & 1)) { 676 dev_err(chip->card->dev, 677 "Invalid formats 0x%x for 0x%x", val, nid); 678 return -EINVAL; 679 } 680 return 0; 681 } 682 683 int lola_init_pcm(struct lola *chip, int dir, int *nidp) 684 { 685 struct lola_pcm *pcm = &chip->pcm[dir]; 686 int i, nid, err; 687 688 nid = *nidp; 689 for (i = 0; i < pcm->num_streams; i++, nid++) { 690 err = lola_init_stream(chip, &pcm->streams[i], i, nid, dir); 691 if (err < 0) 692 return err; 693 } 694 *nidp = nid; 695 return 0; 696 } 697