1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> 9 // 10 // PCM Layer, interface between ALSA and IPC. 11 // 12 13 #include <linux/pm_runtime.h> 14 #include <sound/pcm_params.h> 15 #include <sound/sof.h> 16 #include <trace/events/sof.h> 17 #include "sof-of-dev.h" 18 #include "sof-priv.h" 19 #include "sof-audio.h" 20 #include "sof-utils.h" 21 #include "ops.h" 22 23 /* Create DMA buffer page table for DSP */ 24 static int create_page_table(struct snd_soc_component *component, 25 struct snd_pcm_substream *substream, 26 unsigned char *dma_area, size_t size) 27 { 28 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 29 struct snd_sof_pcm *spcm; 30 struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream); 31 int stream = substream->stream; 32 33 spcm = snd_sof_find_spcm_dai(component, rtd); 34 if (!spcm) 35 return -EINVAL; 36 37 return snd_sof_create_page_table(component->dev, dmab, 38 spcm->stream[stream].page_table.area, size); 39 } 40 41 /* 42 * sof pcm period elapse work 43 */ 44 static void snd_sof_pcm_period_elapsed_work(struct work_struct *work) 45 { 46 struct snd_sof_pcm_stream *sps = 47 container_of(work, struct snd_sof_pcm_stream, 48 period_elapsed_work); 49 50 snd_pcm_period_elapsed(sps->substream); 51 } 52 53 void snd_sof_pcm_init_elapsed_work(struct work_struct *work) 54 { 55 INIT_WORK(work, snd_sof_pcm_period_elapsed_work); 56 } 57 58 /* 59 * sof pcm period elapse, this could be called at irq thread context. 60 */ 61 void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) 62 { 63 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 64 struct snd_soc_component *component = 65 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 66 struct snd_sof_pcm *spcm; 67 68 spcm = snd_sof_find_spcm_dai(component, rtd); 69 if (!spcm) { 70 dev_err(component->dev, 71 "error: period elapsed for unknown stream!\n"); 72 return; 73 } 74 75 /* 76 * snd_pcm_period_elapsed() can be called in interrupt context 77 * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), 78 * when the PCM is done draining or xrun happened, a STOP IPC will 79 * then be sent and this IPC will hit IPC timeout. 80 * To avoid sending IPC before the previous IPC is handled, we 81 * schedule delayed work here to call the snd_pcm_period_elapsed(). 82 */ 83 schedule_work(&spcm->stream[substream->stream].period_elapsed_work); 84 } 85 EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); 86 87 static int 88 sof_pcm_setup_connected_widgets(struct snd_sof_dev *sdev, struct snd_soc_pcm_runtime *rtd, 89 struct snd_sof_pcm *spcm, struct snd_pcm_hw_params *params, 90 struct snd_sof_platform_stream_params *platform_params, int dir) 91 { 92 struct snd_soc_dai *dai; 93 int ret, j; 94 95 /* query DAPM for list of connected widgets and set them up */ 96 for_each_rtd_cpu_dais(rtd, j, dai) { 97 struct snd_soc_dapm_widget_list *list; 98 99 ret = snd_soc_dapm_dai_get_connected_widgets(dai, dir, &list, 100 dpcm_end_walk_at_be); 101 if (ret < 0) { 102 dev_err(sdev->dev, "error: dai %s has no valid %s path\n", dai->name, 103 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture"); 104 return ret; 105 } 106 107 spcm->stream[dir].list = list; 108 109 ret = sof_widget_list_setup(sdev, spcm, params, platform_params, dir); 110 if (ret < 0) { 111 dev_err(sdev->dev, "error: failed widget list set up for pcm %d dir %d\n", 112 spcm->pcm.pcm_id, dir); 113 spcm->stream[dir].list = NULL; 114 snd_soc_dapm_dai_free_widgets(&list); 115 return ret; 116 } 117 } 118 119 return 0; 120 } 121 122 static int sof_pcm_hw_params(struct snd_soc_component *component, 123 struct snd_pcm_substream *substream, 124 struct snd_pcm_hw_params *params) 125 { 126 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 127 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 128 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 129 struct snd_sof_platform_stream_params platform_params = { 0 }; 130 struct snd_pcm_runtime *runtime = substream->runtime; 131 struct snd_sof_pcm *spcm; 132 int ret; 133 134 /* nothing to do for BE */ 135 if (rtd->dai_link->no_pcm) 136 return 0; 137 138 spcm = snd_sof_find_spcm_dai(component, rtd); 139 if (!spcm) 140 return -EINVAL; 141 142 /* 143 * Handle repeated calls to hw_params() without free_pcm() in 144 * between. At least ALSA OSS emulation depends on this. 145 */ 146 if (pcm_ops && pcm_ops->hw_free && spcm->prepared[substream->stream]) { 147 ret = pcm_ops->hw_free(component, substream); 148 if (ret < 0) 149 return ret; 150 151 spcm->prepared[substream->stream] = false; 152 } 153 154 dev_dbg(component->dev, "pcm: hw params stream %d dir %d\n", 155 spcm->pcm.pcm_id, substream->stream); 156 157 ret = snd_sof_pcm_platform_hw_params(sdev, substream, params, &platform_params); 158 if (ret < 0) { 159 dev_err(component->dev, "platform hw params failed\n"); 160 return ret; 161 } 162 163 /* if this is a repeated hw_params without hw_free, skip setting up widgets */ 164 if (!spcm->stream[substream->stream].list) { 165 ret = sof_pcm_setup_connected_widgets(sdev, rtd, spcm, params, &platform_params, 166 substream->stream); 167 if (ret < 0) 168 return ret; 169 } 170 171 /* create compressed page table for audio firmware */ 172 if (runtime->buffer_changed) { 173 ret = create_page_table(component, substream, runtime->dma_area, 174 runtime->dma_bytes); 175 176 if (ret < 0) 177 return ret; 178 } 179 180 if (pcm_ops && pcm_ops->hw_params) { 181 ret = pcm_ops->hw_params(component, substream, params, &platform_params); 182 if (ret < 0) 183 return ret; 184 } 185 186 spcm->prepared[substream->stream] = true; 187 188 /* save pcm hw_params */ 189 memcpy(&spcm->params[substream->stream], params, sizeof(*params)); 190 191 return 0; 192 } 193 194 static int sof_pcm_hw_free(struct snd_soc_component *component, 195 struct snd_pcm_substream *substream) 196 { 197 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 198 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 199 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 200 struct snd_sof_pcm *spcm; 201 int ret, err = 0; 202 203 /* nothing to do for BE */ 204 if (rtd->dai_link->no_pcm) 205 return 0; 206 207 spcm = snd_sof_find_spcm_dai(component, rtd); 208 if (!spcm) 209 return -EINVAL; 210 211 dev_dbg(component->dev, "pcm: free stream %d dir %d\n", 212 spcm->pcm.pcm_id, substream->stream); 213 214 /* free PCM in the DSP */ 215 if (pcm_ops && pcm_ops->hw_free && spcm->prepared[substream->stream]) { 216 ret = pcm_ops->hw_free(component, substream); 217 if (ret < 0) 218 err = ret; 219 220 spcm->prepared[substream->stream] = false; 221 } 222 223 /* stop DMA */ 224 ret = snd_sof_pcm_platform_hw_free(sdev, substream); 225 if (ret < 0) { 226 dev_err(component->dev, "error: platform hw free failed\n"); 227 err = ret; 228 } 229 230 /* free the DAPM widget list */ 231 ret = sof_widget_list_free(sdev, spcm, substream->stream); 232 if (ret < 0) 233 err = ret; 234 235 cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); 236 237 return err; 238 } 239 240 static int sof_pcm_prepare(struct snd_soc_component *component, 241 struct snd_pcm_substream *substream) 242 { 243 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 244 struct snd_sof_pcm *spcm; 245 int ret; 246 247 /* nothing to do for BE */ 248 if (rtd->dai_link->no_pcm) 249 return 0; 250 251 spcm = snd_sof_find_spcm_dai(component, rtd); 252 if (!spcm) 253 return -EINVAL; 254 255 if (spcm->prepared[substream->stream]) 256 return 0; 257 258 dev_dbg(component->dev, "pcm: prepare stream %d dir %d\n", 259 spcm->pcm.pcm_id, substream->stream); 260 261 /* set hw_params */ 262 ret = sof_pcm_hw_params(component, 263 substream, &spcm->params[substream->stream]); 264 if (ret < 0) { 265 dev_err(component->dev, 266 "error: set pcm hw_params after resume\n"); 267 return ret; 268 } 269 270 return 0; 271 } 272 273 /* 274 * FE dai link trigger actions are always executed in non-atomic context because 275 * they involve IPC's. 276 */ 277 static int sof_pcm_trigger(struct snd_soc_component *component, 278 struct snd_pcm_substream *substream, int cmd) 279 { 280 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 281 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 282 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 283 struct snd_sof_pcm *spcm; 284 bool reset_hw_params = false; 285 bool ipc_first = false; 286 int ret = 0; 287 288 /* nothing to do for BE */ 289 if (rtd->dai_link->no_pcm) 290 return 0; 291 292 spcm = snd_sof_find_spcm_dai(component, rtd); 293 if (!spcm) 294 return -EINVAL; 295 296 dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n", 297 spcm->pcm.pcm_id, substream->stream, cmd); 298 299 switch (cmd) { 300 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 301 ipc_first = true; 302 break; 303 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 304 break; 305 case SNDRV_PCM_TRIGGER_START: 306 if (spcm->stream[substream->stream].suspend_ignored) { 307 /* 308 * This case will be triggered when INFO_RESUME is 309 * not supported, no need to re-start streams that 310 * remained enabled in D0ix. 311 */ 312 spcm->stream[substream->stream].suspend_ignored = false; 313 return 0; 314 } 315 break; 316 case SNDRV_PCM_TRIGGER_SUSPEND: 317 if (sdev->system_suspend_target == SOF_SUSPEND_S0IX && 318 spcm->stream[substream->stream].d0i3_compatible) { 319 /* 320 * trap the event, not sending trigger stop to 321 * prevent the FW pipelines from being stopped, 322 * and mark the flag to ignore the upcoming DAPM 323 * PM events. 324 */ 325 spcm->stream[substream->stream].suspend_ignored = true; 326 return 0; 327 } 328 fallthrough; 329 case SNDRV_PCM_TRIGGER_STOP: 330 ipc_first = true; 331 reset_hw_params = true; 332 break; 333 default: 334 dev_err(component->dev, "Unhandled trigger cmd %d\n", cmd); 335 return -EINVAL; 336 } 337 338 /* 339 * DMA and IPC sequence is different for start and stop. Need to send 340 * STOP IPC before stop DMA 341 */ 342 if (!ipc_first) 343 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 344 345 if (pcm_ops && pcm_ops->trigger) 346 ret = pcm_ops->trigger(component, substream, cmd); 347 348 /* need to STOP DMA even if trigger IPC failed */ 349 if (ipc_first) 350 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 351 352 /* free PCM if reset_hw_params is set and the STOP IPC is successful */ 353 if (!ret && reset_hw_params) 354 ret = sof_pcm_stream_free(sdev, substream, spcm, substream->stream, false); 355 356 return ret; 357 } 358 359 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, 360 struct snd_pcm_substream *substream) 361 { 362 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 363 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 364 struct snd_sof_pcm *spcm; 365 snd_pcm_uframes_t host, dai; 366 367 /* nothing to do for BE */ 368 if (rtd->dai_link->no_pcm) 369 return 0; 370 371 /* use dsp ops pointer callback directly if set */ 372 if (sof_ops(sdev)->pcm_pointer) 373 return sof_ops(sdev)->pcm_pointer(sdev, substream); 374 375 spcm = snd_sof_find_spcm_dai(component, rtd); 376 if (!spcm) 377 return -EINVAL; 378 379 /* read position from DSP */ 380 host = bytes_to_frames(substream->runtime, 381 spcm->stream[substream->stream].posn.host_posn); 382 dai = bytes_to_frames(substream->runtime, 383 spcm->stream[substream->stream].posn.dai_posn); 384 385 trace_sof_pcm_pointer_position(sdev, spcm, substream, host, dai); 386 387 return host; 388 } 389 390 static int sof_pcm_open(struct snd_soc_component *component, 391 struct snd_pcm_substream *substream) 392 { 393 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 394 struct snd_pcm_runtime *runtime = substream->runtime; 395 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 396 struct snd_sof_dsp_ops *ops = sof_ops(sdev); 397 struct snd_sof_pcm *spcm; 398 struct snd_soc_tplg_stream_caps *caps; 399 int ret; 400 401 /* nothing to do for BE */ 402 if (rtd->dai_link->no_pcm) 403 return 0; 404 405 spcm = snd_sof_find_spcm_dai(component, rtd); 406 if (!spcm) 407 return -EINVAL; 408 409 dev_dbg(component->dev, "pcm: open stream %d dir %d\n", 410 spcm->pcm.pcm_id, substream->stream); 411 412 413 caps = &spcm->pcm.caps[substream->stream]; 414 415 /* set runtime config */ 416 runtime->hw.info = ops->hw_info; /* platform-specific */ 417 418 /* set any runtime constraints based on topology */ 419 runtime->hw.formats = le64_to_cpu(caps->formats); 420 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 421 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 422 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 423 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 424 425 /* 426 * caps->buffer_size_min is not used since the 427 * snd_pcm_hardware structure only defines buffer_bytes_max 428 */ 429 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 430 431 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 432 runtime->hw.period_bytes_min, 433 runtime->hw.period_bytes_max); 434 dev_dbg(component->dev, "period count %d max %d\n", 435 runtime->hw.periods_min, 436 runtime->hw.periods_max); 437 dev_dbg(component->dev, "buffer max %zd bytes\n", 438 runtime->hw.buffer_bytes_max); 439 440 /* set wait time - TODO: come from topology */ 441 substream->wait_time = 500; 442 443 spcm->stream[substream->stream].posn.host_posn = 0; 444 spcm->stream[substream->stream].posn.dai_posn = 0; 445 spcm->stream[substream->stream].substream = substream; 446 spcm->prepared[substream->stream] = false; 447 448 ret = snd_sof_pcm_platform_open(sdev, substream); 449 if (ret < 0) 450 dev_err(component->dev, "error: pcm open failed %d\n", ret); 451 452 return ret; 453 } 454 455 static int sof_pcm_close(struct snd_soc_component *component, 456 struct snd_pcm_substream *substream) 457 { 458 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 459 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 460 struct snd_sof_pcm *spcm; 461 int err; 462 463 /* nothing to do for BE */ 464 if (rtd->dai_link->no_pcm) 465 return 0; 466 467 spcm = snd_sof_find_spcm_dai(component, rtd); 468 if (!spcm) 469 return -EINVAL; 470 471 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 472 spcm->pcm.pcm_id, substream->stream); 473 474 err = snd_sof_pcm_platform_close(sdev, substream); 475 if (err < 0) { 476 dev_err(component->dev, "error: pcm close failed %d\n", 477 err); 478 /* 479 * keep going, no point in preventing the close 480 * from happening 481 */ 482 } 483 484 return 0; 485 } 486 487 /* 488 * Pre-allocate playback/capture audio buffer pages. 489 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 490 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 491 */ 492 static int sof_pcm_new(struct snd_soc_component *component, 493 struct snd_soc_pcm_runtime *rtd) 494 { 495 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 496 struct snd_sof_pcm *spcm; 497 struct snd_pcm *pcm = rtd->pcm; 498 struct snd_soc_tplg_stream_caps *caps; 499 int stream = SNDRV_PCM_STREAM_PLAYBACK; 500 501 /* find SOF PCM for this RTD */ 502 spcm = snd_sof_find_spcm_dai(component, rtd); 503 if (!spcm) { 504 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 505 rtd->dai_link->id); 506 return 0; 507 } 508 509 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 510 511 /* do we need to pre-allocate playback audio buffer pages */ 512 if (!spcm->pcm.playback) 513 goto capture; 514 515 caps = &spcm->pcm.caps[stream]; 516 517 /* pre-allocate playback audio buffer pages */ 518 dev_dbg(component->dev, 519 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 520 caps->name, caps->buffer_size_min, caps->buffer_size_max); 521 522 if (!pcm->streams[stream].substream) { 523 dev_err(component->dev, "error: NULL playback substream!\n"); 524 return -EINVAL; 525 } 526 527 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 528 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 529 0, le32_to_cpu(caps->buffer_size_max)); 530 capture: 531 stream = SNDRV_PCM_STREAM_CAPTURE; 532 533 /* do we need to pre-allocate capture audio buffer pages */ 534 if (!spcm->pcm.capture) 535 return 0; 536 537 caps = &spcm->pcm.caps[stream]; 538 539 /* pre-allocate capture audio buffer pages */ 540 dev_dbg(component->dev, 541 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 542 caps->name, caps->buffer_size_min, caps->buffer_size_max); 543 544 if (!pcm->streams[stream].substream) { 545 dev_err(component->dev, "error: NULL capture substream!\n"); 546 return -EINVAL; 547 } 548 549 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 550 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 551 0, le32_to_cpu(caps->buffer_size_max)); 552 553 return 0; 554 } 555 556 /* fixup the BE DAI link to match any values from topology */ 557 int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) 558 { 559 struct snd_interval *rate = hw_param_interval(params, 560 SNDRV_PCM_HW_PARAM_RATE); 561 struct snd_interval *channels = hw_param_interval(params, 562 SNDRV_PCM_HW_PARAM_CHANNELS); 563 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 564 struct snd_soc_component *component = 565 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 566 struct snd_sof_dai *dai = 567 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 568 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 569 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 570 571 /* no topology exists for this BE, try a common configuration */ 572 if (!dai) { 573 dev_warn(component->dev, 574 "warning: no topology found for BE DAI %s config\n", 575 rtd->dai_link->name); 576 577 /* set 48k, stereo, 16bits by default */ 578 rate->min = 48000; 579 rate->max = 48000; 580 581 channels->min = 2; 582 channels->max = 2; 583 584 snd_mask_none(fmt); 585 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 586 587 return 0; 588 } 589 590 if (pcm_ops && pcm_ops->dai_link_fixup) 591 return pcm_ops->dai_link_fixup(rtd, params); 592 593 return 0; 594 } 595 EXPORT_SYMBOL(sof_pcm_dai_link_fixup); 596 597 static int sof_pcm_probe(struct snd_soc_component *component) 598 { 599 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 600 struct snd_sof_pdata *plat_data = sdev->pdata; 601 const char *tplg_filename; 602 int ret; 603 604 /* 605 * make sure the device is pm_runtime_active before loading the 606 * topology and initiating IPC or bus transactions 607 */ 608 ret = pm_runtime_resume_and_get(component->dev); 609 if (ret < 0 && ret != -EACCES) 610 return ret; 611 612 /* load the default topology */ 613 sdev->component = component; 614 615 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 616 "%s/%s", 617 plat_data->tplg_filename_prefix, 618 plat_data->tplg_filename); 619 if (!tplg_filename) 620 return -ENOMEM; 621 622 ret = snd_sof_load_topology(component, tplg_filename); 623 if (ret < 0) { 624 dev_err(component->dev, "error: failed to load DSP topology %d\n", 625 ret); 626 return ret; 627 } 628 629 pm_runtime_mark_last_busy(component->dev); 630 pm_runtime_put_autosuspend(component->dev); 631 632 return ret; 633 } 634 635 static void sof_pcm_remove(struct snd_soc_component *component) 636 { 637 /* remove topology */ 638 snd_soc_tplg_component_remove(component); 639 } 640 641 static int sof_pcm_ack(struct snd_soc_component *component, 642 struct snd_pcm_substream *substream) 643 { 644 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 645 646 return snd_sof_pcm_platform_ack(sdev, substream); 647 } 648 649 static snd_pcm_sframes_t sof_pcm_delay(struct snd_soc_component *component, 650 struct snd_pcm_substream *substream) 651 { 652 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 653 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 654 655 if (pcm_ops && pcm_ops->delay) 656 return pcm_ops->delay(component, substream); 657 658 return 0; 659 } 660 661 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 662 { 663 struct snd_soc_component_driver *pd = &sdev->plat_drv; 664 struct snd_sof_pdata *plat_data = sdev->pdata; 665 const char *drv_name; 666 667 if (plat_data->machine) 668 drv_name = plat_data->machine->drv_name; 669 else if (plat_data->of_machine) 670 drv_name = plat_data->of_machine->drv_name; 671 else 672 drv_name = NULL; 673 674 pd->name = "sof-audio-component"; 675 pd->probe = sof_pcm_probe; 676 pd->remove = sof_pcm_remove; 677 pd->open = sof_pcm_open; 678 pd->close = sof_pcm_close; 679 pd->hw_params = sof_pcm_hw_params; 680 pd->prepare = sof_pcm_prepare; 681 pd->hw_free = sof_pcm_hw_free; 682 pd->trigger = sof_pcm_trigger; 683 pd->pointer = sof_pcm_pointer; 684 pd->ack = sof_pcm_ack; 685 pd->delay = sof_pcm_delay; 686 687 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 688 pd->compress_ops = &sof_compressed_ops; 689 #endif 690 691 pd->pcm_construct = sof_pcm_new; 692 pd->ignore_machine = drv_name; 693 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 694 pd->be_pcm_base = SOF_BE_PCM_BASE; 695 pd->use_dai_pcm_id = true; 696 pd->topology_name_prefix = "sof"; 697 698 /* increment module refcount when a pcm is opened */ 699 pd->module_get_upon_open = 1; 700 701 pd->legacy_dai_naming = 1; 702 } 703