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 struct snd_sof_platform_stream_params platform_params = { 0 }; 129 const struct sof_ipc_pcm_ops *pcm_ops = sdev->ipc->ops->pcm; 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->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->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 = sdev->ipc->ops->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->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 = sdev->ipc->ops->pcm; 283 struct snd_sof_pcm *spcm; 284 bool reset_hw_params = false; 285 bool free_widget_list = false; 286 bool ipc_first = false; 287 int ret = 0; 288 289 /* nothing to do for BE */ 290 if (rtd->dai_link->no_pcm) 291 return 0; 292 293 spcm = snd_sof_find_spcm_dai(component, rtd); 294 if (!spcm) 295 return -EINVAL; 296 297 dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n", 298 spcm->pcm.pcm_id, substream->stream, cmd); 299 300 switch (cmd) { 301 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 302 ipc_first = true; 303 break; 304 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 305 break; 306 case SNDRV_PCM_TRIGGER_START: 307 if (spcm->stream[substream->stream].suspend_ignored) { 308 /* 309 * This case will be triggered when INFO_RESUME is 310 * not supported, no need to re-start streams that 311 * remained enabled in D0ix. 312 */ 313 spcm->stream[substream->stream].suspend_ignored = false; 314 return 0; 315 } 316 break; 317 case SNDRV_PCM_TRIGGER_SUSPEND: 318 if (sdev->system_suspend_target == SOF_SUSPEND_S0IX && 319 spcm->stream[substream->stream].d0i3_compatible) { 320 /* 321 * trap the event, not sending trigger stop to 322 * prevent the FW pipelines from being stopped, 323 * and mark the flag to ignore the upcoming DAPM 324 * PM events. 325 */ 326 spcm->stream[substream->stream].suspend_ignored = true; 327 return 0; 328 } 329 free_widget_list = true; 330 fallthrough; 331 case SNDRV_PCM_TRIGGER_STOP: 332 ipc_first = true; 333 reset_hw_params = true; 334 break; 335 default: 336 dev_err(component->dev, "Unhandled trigger cmd %d\n", cmd); 337 return -EINVAL; 338 } 339 340 /* 341 * DMA and IPC sequence is different for start and stop. Need to send 342 * STOP IPC before stop DMA 343 */ 344 if (!ipc_first) 345 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 346 347 if (pcm_ops->trigger) 348 ret = pcm_ops->trigger(component, substream, cmd); 349 350 /* need to STOP DMA even if trigger IPC failed */ 351 if (ipc_first) 352 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 353 354 /* free PCM if reset_hw_params is set and the STOP IPC is successful */ 355 if (!ret && reset_hw_params) 356 ret = sof_pcm_stream_free(sdev, substream, spcm, substream->stream, 357 free_widget_list); 358 359 return ret; 360 } 361 362 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, 363 struct snd_pcm_substream *substream) 364 { 365 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 366 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 367 struct snd_sof_pcm *spcm; 368 snd_pcm_uframes_t host, dai; 369 370 /* nothing to do for BE */ 371 if (rtd->dai_link->no_pcm) 372 return 0; 373 374 /* use dsp ops pointer callback directly if set */ 375 if (sof_ops(sdev)->pcm_pointer) 376 return sof_ops(sdev)->pcm_pointer(sdev, substream); 377 378 spcm = snd_sof_find_spcm_dai(component, rtd); 379 if (!spcm) 380 return -EINVAL; 381 382 /* read position from DSP */ 383 host = bytes_to_frames(substream->runtime, 384 spcm->stream[substream->stream].posn.host_posn); 385 dai = bytes_to_frames(substream->runtime, 386 spcm->stream[substream->stream].posn.dai_posn); 387 388 trace_sof_pcm_pointer_position(sdev, spcm, substream, host, dai); 389 390 return host; 391 } 392 393 static int sof_pcm_open(struct snd_soc_component *component, 394 struct snd_pcm_substream *substream) 395 { 396 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 397 struct snd_pcm_runtime *runtime = substream->runtime; 398 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 399 struct snd_sof_dsp_ops *ops = sof_ops(sdev); 400 struct snd_sof_pcm *spcm; 401 struct snd_soc_tplg_stream_caps *caps; 402 int ret; 403 404 /* nothing to do for BE */ 405 if (rtd->dai_link->no_pcm) 406 return 0; 407 408 spcm = snd_sof_find_spcm_dai(component, rtd); 409 if (!spcm) 410 return -EINVAL; 411 412 dev_dbg(component->dev, "pcm: open stream %d dir %d\n", 413 spcm->pcm.pcm_id, substream->stream); 414 415 416 caps = &spcm->pcm.caps[substream->stream]; 417 418 /* set runtime config */ 419 runtime->hw.info = ops->hw_info; /* platform-specific */ 420 421 /* set any runtime constraints based on topology */ 422 runtime->hw.formats = le64_to_cpu(caps->formats); 423 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 424 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 425 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 426 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 427 428 /* 429 * caps->buffer_size_min is not used since the 430 * snd_pcm_hardware structure only defines buffer_bytes_max 431 */ 432 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 433 434 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 435 runtime->hw.period_bytes_min, 436 runtime->hw.period_bytes_max); 437 dev_dbg(component->dev, "period count %d max %d\n", 438 runtime->hw.periods_min, 439 runtime->hw.periods_max); 440 dev_dbg(component->dev, "buffer max %zd bytes\n", 441 runtime->hw.buffer_bytes_max); 442 443 /* set wait time - TODO: come from topology */ 444 substream->wait_time = 500; 445 446 spcm->stream[substream->stream].posn.host_posn = 0; 447 spcm->stream[substream->stream].posn.dai_posn = 0; 448 spcm->stream[substream->stream].substream = substream; 449 spcm->prepared[substream->stream] = false; 450 451 ret = snd_sof_pcm_platform_open(sdev, substream); 452 if (ret < 0) 453 dev_err(component->dev, "error: pcm open failed %d\n", ret); 454 455 return ret; 456 } 457 458 static int sof_pcm_close(struct snd_soc_component *component, 459 struct snd_pcm_substream *substream) 460 { 461 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 462 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 463 struct snd_sof_pcm *spcm; 464 int err; 465 466 /* nothing to do for BE */ 467 if (rtd->dai_link->no_pcm) 468 return 0; 469 470 spcm = snd_sof_find_spcm_dai(component, rtd); 471 if (!spcm) 472 return -EINVAL; 473 474 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 475 spcm->pcm.pcm_id, substream->stream); 476 477 err = snd_sof_pcm_platform_close(sdev, substream); 478 if (err < 0) { 479 dev_err(component->dev, "error: pcm close failed %d\n", 480 err); 481 /* 482 * keep going, no point in preventing the close 483 * from happening 484 */ 485 } 486 487 return 0; 488 } 489 490 /* 491 * Pre-allocate playback/capture audio buffer pages. 492 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 493 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 494 */ 495 static int sof_pcm_new(struct snd_soc_component *component, 496 struct snd_soc_pcm_runtime *rtd) 497 { 498 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 499 struct snd_sof_pcm *spcm; 500 struct snd_pcm *pcm = rtd->pcm; 501 struct snd_soc_tplg_stream_caps *caps; 502 int stream = SNDRV_PCM_STREAM_PLAYBACK; 503 504 /* find SOF PCM for this RTD */ 505 spcm = snd_sof_find_spcm_dai(component, rtd); 506 if (!spcm) { 507 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 508 rtd->dai_link->id); 509 return 0; 510 } 511 512 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 513 514 /* do we need to pre-allocate playback audio buffer pages */ 515 if (!spcm->pcm.playback) 516 goto capture; 517 518 caps = &spcm->pcm.caps[stream]; 519 520 /* pre-allocate playback audio buffer pages */ 521 dev_dbg(component->dev, 522 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 523 caps->name, caps->buffer_size_min, caps->buffer_size_max); 524 525 if (!pcm->streams[stream].substream) { 526 dev_err(component->dev, "error: NULL playback substream!\n"); 527 return -EINVAL; 528 } 529 530 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 531 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 532 0, le32_to_cpu(caps->buffer_size_max)); 533 capture: 534 stream = SNDRV_PCM_STREAM_CAPTURE; 535 536 /* do we need to pre-allocate capture audio buffer pages */ 537 if (!spcm->pcm.capture) 538 return 0; 539 540 caps = &spcm->pcm.caps[stream]; 541 542 /* pre-allocate capture audio buffer pages */ 543 dev_dbg(component->dev, 544 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 545 caps->name, caps->buffer_size_min, caps->buffer_size_max); 546 547 if (!pcm->streams[stream].substream) { 548 dev_err(component->dev, "error: NULL capture substream!\n"); 549 return -EINVAL; 550 } 551 552 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 553 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 554 0, le32_to_cpu(caps->buffer_size_max)); 555 556 return 0; 557 } 558 559 /* fixup the BE DAI link to match any values from topology */ 560 int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) 561 { 562 struct snd_interval *rate = hw_param_interval(params, 563 SNDRV_PCM_HW_PARAM_RATE); 564 struct snd_interval *channels = hw_param_interval(params, 565 SNDRV_PCM_HW_PARAM_CHANNELS); 566 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 567 struct snd_soc_component *component = 568 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 569 struct snd_sof_dai *dai = 570 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 571 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 572 const struct sof_ipc_pcm_ops *pcm_ops = sdev->ipc->ops->pcm; 573 574 /* no topology exists for this BE, try a common configuration */ 575 if (!dai) { 576 dev_warn(component->dev, 577 "warning: no topology found for BE DAI %s config\n", 578 rtd->dai_link->name); 579 580 /* set 48k, stereo, 16bits by default */ 581 rate->min = 48000; 582 rate->max = 48000; 583 584 channels->min = 2; 585 channels->max = 2; 586 587 snd_mask_none(fmt); 588 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 589 590 return 0; 591 } 592 593 if (pcm_ops->dai_link_fixup) 594 return pcm_ops->dai_link_fixup(rtd, params); 595 596 return 0; 597 } 598 EXPORT_SYMBOL(sof_pcm_dai_link_fixup); 599 600 static int sof_pcm_probe(struct snd_soc_component *component) 601 { 602 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 603 struct snd_sof_pdata *plat_data = sdev->pdata; 604 const char *tplg_filename; 605 int ret; 606 607 /* 608 * make sure the device is pm_runtime_active before loading the 609 * topology and initiating IPC or bus transactions 610 */ 611 ret = pm_runtime_resume_and_get(component->dev); 612 if (ret < 0 && ret != -EACCES) 613 return ret; 614 615 /* load the default topology */ 616 sdev->component = component; 617 618 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 619 "%s/%s", 620 plat_data->tplg_filename_prefix, 621 plat_data->tplg_filename); 622 if (!tplg_filename) 623 return -ENOMEM; 624 625 ret = snd_sof_load_topology(component, tplg_filename); 626 if (ret < 0) { 627 dev_err(component->dev, "error: failed to load DSP topology %d\n", 628 ret); 629 return ret; 630 } 631 632 pm_runtime_mark_last_busy(component->dev); 633 pm_runtime_put_autosuspend(component->dev); 634 635 return ret; 636 } 637 638 static void sof_pcm_remove(struct snd_soc_component *component) 639 { 640 /* remove topology */ 641 snd_soc_tplg_component_remove(component); 642 } 643 644 static int sof_pcm_ack(struct snd_soc_component *component, 645 struct snd_pcm_substream *substream) 646 { 647 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 648 649 return snd_sof_pcm_platform_ack(sdev, substream); 650 } 651 652 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 653 { 654 struct snd_soc_component_driver *pd = &sdev->plat_drv; 655 struct snd_sof_pdata *plat_data = sdev->pdata; 656 const char *drv_name; 657 658 if (plat_data->machine) 659 drv_name = plat_data->machine->drv_name; 660 else if (plat_data->of_machine) 661 drv_name = plat_data->of_machine->drv_name; 662 else 663 drv_name = NULL; 664 665 pd->name = "sof-audio-component"; 666 pd->probe = sof_pcm_probe; 667 pd->remove = sof_pcm_remove; 668 pd->open = sof_pcm_open; 669 pd->close = sof_pcm_close; 670 pd->hw_params = sof_pcm_hw_params; 671 pd->prepare = sof_pcm_prepare; 672 pd->hw_free = sof_pcm_hw_free; 673 pd->trigger = sof_pcm_trigger; 674 pd->pointer = sof_pcm_pointer; 675 pd->ack = sof_pcm_ack; 676 677 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 678 pd->compress_ops = &sof_compressed_ops; 679 #endif 680 681 pd->pcm_construct = sof_pcm_new; 682 pd->ignore_machine = drv_name; 683 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 684 pd->be_pcm_base = SOF_BE_PCM_BASE; 685 pd->use_dai_pcm_id = true; 686 pd->topology_name_prefix = "sof"; 687 688 /* increment module refcount when a pcm is opened */ 689 pd->module_get_upon_open = 1; 690 691 pd->legacy_dai_naming = 1; 692 } 693