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 */ 24static 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 = snd_soc_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 */ 44static 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 53void 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 */ 61void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) 62{ 63 struct snd_soc_pcm_runtime *rtd = snd_soc_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} 85EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); 86 87static int 88sof_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 122static 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 = snd_soc_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 194static int sof_pcm_hw_free(struct snd_soc_component *component, 195 struct snd_pcm_substream *substream) 196{ 197 struct snd_soc_pcm_runtime *rtd = snd_soc_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 if (spcm->prepared[substream->stream]) { 215 /* stop DMA first if needed */ 216 if (pcm_ops && pcm_ops->platform_stop_during_hw_free) 217 snd_sof_pcm_platform_trigger(sdev, substream, SNDRV_PCM_TRIGGER_STOP); 218 219 /* free PCM in the DSP */ 220 if (pcm_ops && pcm_ops->hw_free) { 221 ret = pcm_ops->hw_free(component, substream); 222 if (ret < 0) 223 err = ret; 224 } 225 226 spcm->prepared[substream->stream] = false; 227 } 228 229 /* reset DMA */ 230 ret = snd_sof_pcm_platform_hw_free(sdev, substream); 231 if (ret < 0) { 232 dev_err(component->dev, "error: platform hw free failed\n"); 233 err = ret; 234 } 235 236 /* free the DAPM widget list */ 237 ret = sof_widget_list_free(sdev, spcm, substream->stream); 238 if (ret < 0) 239 err = ret; 240 241 cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); 242 243 return err; 244} 245 246static int sof_pcm_prepare(struct snd_soc_component *component, 247 struct snd_pcm_substream *substream) 248{ 249 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 250 struct snd_sof_pcm *spcm; 251 int ret; 252 253 /* nothing to do for BE */ 254 if (rtd->dai_link->no_pcm) 255 return 0; 256 257 spcm = snd_sof_find_spcm_dai(component, rtd); 258 if (!spcm) 259 return -EINVAL; 260 261 if (spcm->prepared[substream->stream]) 262 return 0; 263 264 dev_dbg(component->dev, "pcm: prepare stream %d dir %d\n", 265 spcm->pcm.pcm_id, substream->stream); 266 267 /* set hw_params */ 268 ret = sof_pcm_hw_params(component, 269 substream, &spcm->params[substream->stream]); 270 if (ret < 0) { 271 dev_err(component->dev, 272 "error: set pcm hw_params after resume\n"); 273 return ret; 274 } 275 276 return 0; 277} 278 279/* 280 * FE dai link trigger actions are always executed in non-atomic context because 281 * they involve IPC's. 282 */ 283static int sof_pcm_trigger(struct snd_soc_component *component, 284 struct snd_pcm_substream *substream, int cmd) 285{ 286 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 287 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 288 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 289 struct snd_sof_pcm *spcm; 290 bool reset_hw_params = false; 291 bool ipc_first = false; 292 int ret = 0; 293 294 /* nothing to do for BE */ 295 if (rtd->dai_link->no_pcm) 296 return 0; 297 298 spcm = snd_sof_find_spcm_dai(component, rtd); 299 if (!spcm) 300 return -EINVAL; 301 302 dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n", 303 spcm->pcm.pcm_id, substream->stream, cmd); 304 305 switch (cmd) { 306 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 307 ipc_first = true; 308 break; 309 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 310 if (pcm_ops && pcm_ops->ipc_first_on_start) 311 ipc_first = true; 312 break; 313 case SNDRV_PCM_TRIGGER_START: 314 if (spcm->stream[substream->stream].suspend_ignored) { 315 /* 316 * This case will be triggered when INFO_RESUME is 317 * not supported, no need to re-start streams that 318 * remained enabled in D0ix. 319 */ 320 spcm->stream[substream->stream].suspend_ignored = false; 321 return 0; 322 } 323 324 if (pcm_ops && pcm_ops->ipc_first_on_start) 325 ipc_first = true; 326 break; 327 case SNDRV_PCM_TRIGGER_SUSPEND: 328 /* 329 * If DSP D0I3 is allowed during S0iX, set the suspend_ignored flag for 330 * D0I3-compatible streams to keep the firmware pipeline running 331 */ 332 if (pcm_ops && pcm_ops->d0i3_supported_in_s0ix && 333 sdev->system_suspend_target == SOF_SUSPEND_S0IX && 334 spcm->stream[substream->stream].d0i3_compatible) { 335 spcm->stream[substream->stream].suspend_ignored = true; 336 return 0; 337 } 338 339 /* On suspend the DMA must be stopped in DSPless mode */ 340 if (sdev->dspless_mode_selected) 341 reset_hw_params = true; 342 343 fallthrough; 344 case SNDRV_PCM_TRIGGER_STOP: 345 ipc_first = true; 346 if (pcm_ops && pcm_ops->reset_hw_params_during_stop) 347 reset_hw_params = true; 348 break; 349 default: 350 dev_err(component->dev, "Unhandled trigger cmd %d\n", cmd); 351 return -EINVAL; 352 } 353 354 if (!ipc_first) 355 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 356 357 if (pcm_ops && pcm_ops->trigger) 358 ret = pcm_ops->trigger(component, substream, cmd); 359 360 switch (cmd) { 361 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 362 case SNDRV_PCM_TRIGGER_START: 363 /* invoke platform trigger to start DMA only if pcm_ops is successful */ 364 if (ipc_first && !ret) 365 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 366 break; 367 case SNDRV_PCM_TRIGGER_SUSPEND: 368 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 369 case SNDRV_PCM_TRIGGER_STOP: 370 /* invoke platform trigger to stop DMA even if pcm_ops isn't set or if it failed */ 371 if (!pcm_ops || !pcm_ops->platform_stop_during_hw_free) 372 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 373 break; 374 default: 375 break; 376 } 377 378 /* free PCM if reset_hw_params is set and the STOP IPC is successful */ 379 if (!ret && reset_hw_params) 380 ret = sof_pcm_stream_free(sdev, substream, spcm, substream->stream, false); 381 382 return ret; 383} 384 385static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, 386 struct snd_pcm_substream *substream) 387{ 388 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 389 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 390 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 391 struct snd_sof_pcm *spcm; 392 snd_pcm_uframes_t host, dai; 393 int ret = -EOPNOTSUPP; 394 395 /* nothing to do for BE */ 396 if (rtd->dai_link->no_pcm) 397 return 0; 398 399 if (pcm_ops && pcm_ops->pointer) 400 ret = pcm_ops->pointer(component, substream, &host); 401 402 if (ret != -EOPNOTSUPP) 403 return ret ? ret : host; 404 405 /* use dsp ops pointer callback directly if set */ 406 if (sof_ops(sdev)->pcm_pointer) 407 return sof_ops(sdev)->pcm_pointer(sdev, substream); 408 409 spcm = snd_sof_find_spcm_dai(component, rtd); 410 if (!spcm) 411 return -EINVAL; 412 413 /* read position from DSP */ 414 host = bytes_to_frames(substream->runtime, 415 spcm->stream[substream->stream].posn.host_posn); 416 dai = bytes_to_frames(substream->runtime, 417 spcm->stream[substream->stream].posn.dai_posn); 418 419 trace_sof_pcm_pointer_position(sdev, spcm, substream, host, dai); 420 421 return host; 422} 423 424static int sof_pcm_open(struct snd_soc_component *component, 425 struct snd_pcm_substream *substream) 426{ 427 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 428 struct snd_pcm_runtime *runtime = substream->runtime; 429 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 430 struct snd_sof_dsp_ops *ops = sof_ops(sdev); 431 struct snd_sof_pcm *spcm; 432 struct snd_soc_tplg_stream_caps *caps; 433 int ret; 434 435 /* nothing to do for BE */ 436 if (rtd->dai_link->no_pcm) 437 return 0; 438 439 spcm = snd_sof_find_spcm_dai(component, rtd); 440 if (!spcm) 441 return -EINVAL; 442 443 dev_dbg(component->dev, "pcm: open stream %d dir %d\n", 444 spcm->pcm.pcm_id, substream->stream); 445 446 447 caps = &spcm->pcm.caps[substream->stream]; 448 449 /* set runtime config */ 450 runtime->hw.info = ops->hw_info; /* platform-specific */ 451 452 /* set any runtime constraints based on topology */ 453 runtime->hw.formats = le64_to_cpu(caps->formats); 454 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 455 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 456 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 457 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 458 459 /* 460 * caps->buffer_size_min is not used since the 461 * snd_pcm_hardware structure only defines buffer_bytes_max 462 */ 463 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 464 465 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 466 runtime->hw.period_bytes_min, 467 runtime->hw.period_bytes_max); 468 dev_dbg(component->dev, "period count %d max %d\n", 469 runtime->hw.periods_min, 470 runtime->hw.periods_max); 471 dev_dbg(component->dev, "buffer max %zd bytes\n", 472 runtime->hw.buffer_bytes_max); 473 474 /* set wait time - TODO: come from topology */ 475 substream->wait_time = 500; 476 477 spcm->stream[substream->stream].posn.host_posn = 0; 478 spcm->stream[substream->stream].posn.dai_posn = 0; 479 spcm->stream[substream->stream].substream = substream; 480 spcm->prepared[substream->stream] = false; 481 482 ret = snd_sof_pcm_platform_open(sdev, substream); 483 if (ret < 0) 484 dev_err(component->dev, "error: pcm open failed %d\n", ret); 485 486 return ret; 487} 488 489static int sof_pcm_close(struct snd_soc_component *component, 490 struct snd_pcm_substream *substream) 491{ 492 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 493 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 494 struct snd_sof_pcm *spcm; 495 int err; 496 497 /* nothing to do for BE */ 498 if (rtd->dai_link->no_pcm) 499 return 0; 500 501 spcm = snd_sof_find_spcm_dai(component, rtd); 502 if (!spcm) 503 return -EINVAL; 504 505 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 506 spcm->pcm.pcm_id, substream->stream); 507 508 err = snd_sof_pcm_platform_close(sdev, substream); 509 if (err < 0) { 510 dev_err(component->dev, "error: pcm close failed %d\n", 511 err); 512 /* 513 * keep going, no point in preventing the close 514 * from happening 515 */ 516 } 517 518 return 0; 519} 520 521/* 522 * Pre-allocate playback/capture audio buffer pages. 523 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 524 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 525 */ 526static int sof_pcm_new(struct snd_soc_component *component, 527 struct snd_soc_pcm_runtime *rtd) 528{ 529 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 530 struct snd_sof_pcm *spcm; 531 struct snd_pcm *pcm = rtd->pcm; 532 struct snd_soc_tplg_stream_caps *caps; 533 int stream = SNDRV_PCM_STREAM_PLAYBACK; 534 535 /* find SOF PCM for this RTD */ 536 spcm = snd_sof_find_spcm_dai(component, rtd); 537 if (!spcm) { 538 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 539 rtd->dai_link->id); 540 return 0; 541 } 542 543 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 544 545 /* do we need to pre-allocate playback audio buffer pages */ 546 if (!spcm->pcm.playback) 547 goto capture; 548 549 caps = &spcm->pcm.caps[stream]; 550 551 /* pre-allocate playback audio buffer pages */ 552 dev_dbg(component->dev, 553 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 554 caps->name, caps->buffer_size_min, caps->buffer_size_max); 555 556 if (!pcm->streams[stream].substream) { 557 dev_err(component->dev, "error: NULL playback substream!\n"); 558 return -EINVAL; 559 } 560 561 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 562 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 563 0, le32_to_cpu(caps->buffer_size_max)); 564capture: 565 stream = SNDRV_PCM_STREAM_CAPTURE; 566 567 /* do we need to pre-allocate capture audio buffer pages */ 568 if (!spcm->pcm.capture) 569 return 0; 570 571 caps = &spcm->pcm.caps[stream]; 572 573 /* pre-allocate capture audio buffer pages */ 574 dev_dbg(component->dev, 575 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 576 caps->name, caps->buffer_size_min, caps->buffer_size_max); 577 578 if (!pcm->streams[stream].substream) { 579 dev_err(component->dev, "error: NULL capture substream!\n"); 580 return -EINVAL; 581 } 582 583 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 584 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 585 0, le32_to_cpu(caps->buffer_size_max)); 586 587 return 0; 588} 589 590/* fixup the BE DAI link to match any values from topology */ 591int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) 592{ 593 struct snd_interval *rate = hw_param_interval(params, 594 SNDRV_PCM_HW_PARAM_RATE); 595 struct snd_interval *channels = hw_param_interval(params, 596 SNDRV_PCM_HW_PARAM_CHANNELS); 597 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 598 struct snd_soc_component *component = 599 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 600 struct snd_sof_dai *dai = 601 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 602 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 603 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 604 605 /* no topology exists for this BE, try a common configuration */ 606 if (!dai) { 607 dev_warn(component->dev, 608 "warning: no topology found for BE DAI %s config\n", 609 rtd->dai_link->name); 610 611 /* set 48k, stereo, 16bits by default */ 612 rate->min = 48000; 613 rate->max = 48000; 614 615 channels->min = 2; 616 channels->max = 2; 617 618 snd_mask_none(fmt); 619 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 620 621 return 0; 622 } 623 624 if (pcm_ops && pcm_ops->dai_link_fixup) 625 return pcm_ops->dai_link_fixup(rtd, params); 626 627 return 0; 628} 629EXPORT_SYMBOL(sof_pcm_dai_link_fixup); 630 631static int sof_pcm_probe(struct snd_soc_component *component) 632{ 633 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 634 struct snd_sof_pdata *plat_data = sdev->pdata; 635 const char *tplg_filename; 636 int ret; 637 638 /* 639 * make sure the device is pm_runtime_active before loading the 640 * topology and initiating IPC or bus transactions 641 */ 642 ret = pm_runtime_resume_and_get(component->dev); 643 if (ret < 0 && ret != -EACCES) 644 return ret; 645 646 /* load the default topology */ 647 sdev->component = component; 648 649 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 650 "%s/%s", 651 plat_data->tplg_filename_prefix, 652 plat_data->tplg_filename); 653 if (!tplg_filename) { 654 ret = -ENOMEM; 655 goto pm_error; 656 } 657 658 ret = snd_sof_load_topology(component, tplg_filename); 659 if (ret < 0) 660 dev_err(component->dev, "error: failed to load DSP topology %d\n", 661 ret); 662 663pm_error: 664 pm_runtime_mark_last_busy(component->dev); 665 pm_runtime_put_autosuspend(component->dev); 666 667 return ret; 668} 669 670static void sof_pcm_remove(struct snd_soc_component *component) 671{ 672 /* remove topology */ 673 snd_soc_tplg_component_remove(component); 674} 675 676static int sof_pcm_ack(struct snd_soc_component *component, 677 struct snd_pcm_substream *substream) 678{ 679 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 680 681 return snd_sof_pcm_platform_ack(sdev, substream); 682} 683 684static snd_pcm_sframes_t sof_pcm_delay(struct snd_soc_component *component, 685 struct snd_pcm_substream *substream) 686{ 687 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 688 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 689 690 if (pcm_ops && pcm_ops->delay) 691 return pcm_ops->delay(component, substream); 692 693 return 0; 694} 695 696void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 697{ 698 struct snd_soc_component_driver *pd = &sdev->plat_drv; 699 struct snd_sof_pdata *plat_data = sdev->pdata; 700 const char *drv_name; 701 702 if (plat_data->machine) 703 drv_name = plat_data->machine->drv_name; 704 else if (plat_data->of_machine) 705 drv_name = plat_data->of_machine->drv_name; 706 else 707 drv_name = NULL; 708 709 pd->name = "sof-audio-component"; 710 pd->probe = sof_pcm_probe; 711 pd->remove = sof_pcm_remove; 712 pd->open = sof_pcm_open; 713 pd->close = sof_pcm_close; 714 pd->hw_params = sof_pcm_hw_params; 715 pd->prepare = sof_pcm_prepare; 716 pd->hw_free = sof_pcm_hw_free; 717 pd->trigger = sof_pcm_trigger; 718 pd->pointer = sof_pcm_pointer; 719 pd->ack = sof_pcm_ack; 720 pd->delay = sof_pcm_delay; 721 722#if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 723 pd->compress_ops = &sof_compressed_ops; 724#endif 725 726 pd->pcm_construct = sof_pcm_new; 727 pd->ignore_machine = drv_name; 728 pd->be_pcm_base = SOF_BE_PCM_BASE; 729 pd->use_dai_pcm_id = true; 730 pd->topology_name_prefix = "sof"; 731 732 /* increment module refcount when a pcm is opened */ 733 pd->module_get_upon_open = 1; 734 735 pd->legacy_dai_naming = 1; 736 737 /* 738 * The fixup is only needed when the DSP is in use as with the DSPless 739 * mode we are directly using the audio interface 740 */ 741 if (!sdev->dspless_mode_selected) 742 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 743} 744