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 = 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 */ 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 = 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 } 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 = 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 } 193 194 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 = 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 } 245 246 static 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 */ 283 static 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 if (sdev->system_suspend_target == SOF_SUSPEND_S0IX && 329 spcm->stream[substream->stream].d0i3_compatible) { 330 /* 331 * trap the event, not sending trigger stop to 332 * prevent the FW pipelines from being stopped, 333 * and mark the flag to ignore the upcoming DAPM 334 * PM events. 335 */ 336 spcm->stream[substream->stream].suspend_ignored = true; 337 return 0; 338 } 339 340 /* On suspend the DMA must be stopped in DSPless mode */ 341 if (sdev->dspless_mode_selected) 342 reset_hw_params = true; 343 344 fallthrough; 345 case SNDRV_PCM_TRIGGER_STOP: 346 ipc_first = true; 347 if (pcm_ops && pcm_ops->reset_hw_params_during_stop) 348 reset_hw_params = true; 349 break; 350 default: 351 dev_err(component->dev, "Unhandled trigger cmd %d\n", cmd); 352 return -EINVAL; 353 } 354 355 if (!ipc_first) 356 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 357 358 if (pcm_ops && pcm_ops->trigger) 359 ret = pcm_ops->trigger(component, substream, cmd); 360 361 switch (cmd) { 362 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 363 case SNDRV_PCM_TRIGGER_START: 364 /* invoke platform trigger to start DMA only if pcm_ops is successful */ 365 if (ipc_first && !ret) 366 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 367 break; 368 case SNDRV_PCM_TRIGGER_SUSPEND: 369 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 370 case SNDRV_PCM_TRIGGER_STOP: 371 /* invoke platform trigger to stop DMA even if pcm_ops isn't set or if it failed */ 372 if (!pcm_ops || !pcm_ops->platform_stop_during_hw_free) 373 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 374 break; 375 default: 376 break; 377 } 378 379 /* free PCM if reset_hw_params is set and the STOP IPC is successful */ 380 if (!ret && reset_hw_params) 381 ret = sof_pcm_stream_free(sdev, substream, spcm, substream->stream, false); 382 383 return ret; 384 } 385 386 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, 387 struct snd_pcm_substream *substream) 388 { 389 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 390 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 391 struct snd_sof_pcm *spcm; 392 snd_pcm_uframes_t host, dai; 393 394 /* nothing to do for BE */ 395 if (rtd->dai_link->no_pcm) 396 return 0; 397 398 /* use dsp ops pointer callback directly if set */ 399 if (sof_ops(sdev)->pcm_pointer) 400 return sof_ops(sdev)->pcm_pointer(sdev, substream); 401 402 spcm = snd_sof_find_spcm_dai(component, rtd); 403 if (!spcm) 404 return -EINVAL; 405 406 /* read position from DSP */ 407 host = bytes_to_frames(substream->runtime, 408 spcm->stream[substream->stream].posn.host_posn); 409 dai = bytes_to_frames(substream->runtime, 410 spcm->stream[substream->stream].posn.dai_posn); 411 412 trace_sof_pcm_pointer_position(sdev, spcm, substream, host, dai); 413 414 return host; 415 } 416 417 static int sof_pcm_open(struct snd_soc_component *component, 418 struct snd_pcm_substream *substream) 419 { 420 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 421 struct snd_pcm_runtime *runtime = substream->runtime; 422 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 423 struct snd_sof_dsp_ops *ops = sof_ops(sdev); 424 struct snd_sof_pcm *spcm; 425 struct snd_soc_tplg_stream_caps *caps; 426 int ret; 427 428 /* nothing to do for BE */ 429 if (rtd->dai_link->no_pcm) 430 return 0; 431 432 spcm = snd_sof_find_spcm_dai(component, rtd); 433 if (!spcm) 434 return -EINVAL; 435 436 dev_dbg(component->dev, "pcm: open stream %d dir %d\n", 437 spcm->pcm.pcm_id, substream->stream); 438 439 440 caps = &spcm->pcm.caps[substream->stream]; 441 442 /* set runtime config */ 443 runtime->hw.info = ops->hw_info; /* platform-specific */ 444 445 /* set any runtime constraints based on topology */ 446 runtime->hw.formats = le64_to_cpu(caps->formats); 447 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 448 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 449 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 450 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 451 452 /* 453 * caps->buffer_size_min is not used since the 454 * snd_pcm_hardware structure only defines buffer_bytes_max 455 */ 456 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 457 458 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 459 runtime->hw.period_bytes_min, 460 runtime->hw.period_bytes_max); 461 dev_dbg(component->dev, "period count %d max %d\n", 462 runtime->hw.periods_min, 463 runtime->hw.periods_max); 464 dev_dbg(component->dev, "buffer max %zd bytes\n", 465 runtime->hw.buffer_bytes_max); 466 467 /* set wait time - TODO: come from topology */ 468 substream->wait_time = 500; 469 470 spcm->stream[substream->stream].posn.host_posn = 0; 471 spcm->stream[substream->stream].posn.dai_posn = 0; 472 spcm->stream[substream->stream].substream = substream; 473 spcm->prepared[substream->stream] = false; 474 475 ret = snd_sof_pcm_platform_open(sdev, substream); 476 if (ret < 0) 477 dev_err(component->dev, "error: pcm open failed %d\n", ret); 478 479 return ret; 480 } 481 482 static int sof_pcm_close(struct snd_soc_component *component, 483 struct snd_pcm_substream *substream) 484 { 485 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 486 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 487 struct snd_sof_pcm *spcm; 488 int err; 489 490 /* nothing to do for BE */ 491 if (rtd->dai_link->no_pcm) 492 return 0; 493 494 spcm = snd_sof_find_spcm_dai(component, rtd); 495 if (!spcm) 496 return -EINVAL; 497 498 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 499 spcm->pcm.pcm_id, substream->stream); 500 501 err = snd_sof_pcm_platform_close(sdev, substream); 502 if (err < 0) { 503 dev_err(component->dev, "error: pcm close failed %d\n", 504 err); 505 /* 506 * keep going, no point in preventing the close 507 * from happening 508 */ 509 } 510 511 return 0; 512 } 513 514 /* 515 * Pre-allocate playback/capture audio buffer pages. 516 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 517 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 518 */ 519 static int sof_pcm_new(struct snd_soc_component *component, 520 struct snd_soc_pcm_runtime *rtd) 521 { 522 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 523 struct snd_sof_pcm *spcm; 524 struct snd_pcm *pcm = rtd->pcm; 525 struct snd_soc_tplg_stream_caps *caps; 526 int stream = SNDRV_PCM_STREAM_PLAYBACK; 527 528 /* find SOF PCM for this RTD */ 529 spcm = snd_sof_find_spcm_dai(component, rtd); 530 if (!spcm) { 531 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 532 rtd->dai_link->id); 533 return 0; 534 } 535 536 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 537 538 /* do we need to pre-allocate playback audio buffer pages */ 539 if (!spcm->pcm.playback) 540 goto capture; 541 542 caps = &spcm->pcm.caps[stream]; 543 544 /* pre-allocate playback audio buffer pages */ 545 dev_dbg(component->dev, 546 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 547 caps->name, caps->buffer_size_min, caps->buffer_size_max); 548 549 if (!pcm->streams[stream].substream) { 550 dev_err(component->dev, "error: NULL playback substream!\n"); 551 return -EINVAL; 552 } 553 554 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 555 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 556 0, le32_to_cpu(caps->buffer_size_max)); 557 capture: 558 stream = SNDRV_PCM_STREAM_CAPTURE; 559 560 /* do we need to pre-allocate capture audio buffer pages */ 561 if (!spcm->pcm.capture) 562 return 0; 563 564 caps = &spcm->pcm.caps[stream]; 565 566 /* pre-allocate capture audio buffer pages */ 567 dev_dbg(component->dev, 568 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 569 caps->name, caps->buffer_size_min, caps->buffer_size_max); 570 571 if (!pcm->streams[stream].substream) { 572 dev_err(component->dev, "error: NULL capture substream!\n"); 573 return -EINVAL; 574 } 575 576 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 577 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 578 0, le32_to_cpu(caps->buffer_size_max)); 579 580 return 0; 581 } 582 583 /* fixup the BE DAI link to match any values from topology */ 584 int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) 585 { 586 struct snd_interval *rate = hw_param_interval(params, 587 SNDRV_PCM_HW_PARAM_RATE); 588 struct snd_interval *channels = hw_param_interval(params, 589 SNDRV_PCM_HW_PARAM_CHANNELS); 590 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 591 struct snd_soc_component *component = 592 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 593 struct snd_sof_dai *dai = 594 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 595 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 596 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 597 598 /* no topology exists for this BE, try a common configuration */ 599 if (!dai) { 600 dev_warn(component->dev, 601 "warning: no topology found for BE DAI %s config\n", 602 rtd->dai_link->name); 603 604 /* set 48k, stereo, 16bits by default */ 605 rate->min = 48000; 606 rate->max = 48000; 607 608 channels->min = 2; 609 channels->max = 2; 610 611 snd_mask_none(fmt); 612 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 613 614 return 0; 615 } 616 617 if (pcm_ops && pcm_ops->dai_link_fixup) 618 return pcm_ops->dai_link_fixup(rtd, params); 619 620 return 0; 621 } 622 EXPORT_SYMBOL(sof_pcm_dai_link_fixup); 623 624 static int sof_pcm_probe(struct snd_soc_component *component) 625 { 626 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 627 struct snd_sof_pdata *plat_data = sdev->pdata; 628 const char *tplg_filename; 629 int ret; 630 631 /* 632 * make sure the device is pm_runtime_active before loading the 633 * topology and initiating IPC or bus transactions 634 */ 635 ret = pm_runtime_resume_and_get(component->dev); 636 if (ret < 0 && ret != -EACCES) 637 return ret; 638 639 /* load the default topology */ 640 sdev->component = component; 641 642 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 643 "%s/%s", 644 plat_data->tplg_filename_prefix, 645 plat_data->tplg_filename); 646 if (!tplg_filename) { 647 ret = -ENOMEM; 648 goto pm_error; 649 } 650 651 ret = snd_sof_load_topology(component, tplg_filename); 652 if (ret < 0) 653 dev_err(component->dev, "error: failed to load DSP topology %d\n", 654 ret); 655 656 pm_error: 657 pm_runtime_mark_last_busy(component->dev); 658 pm_runtime_put_autosuspend(component->dev); 659 660 return ret; 661 } 662 663 static void sof_pcm_remove(struct snd_soc_component *component) 664 { 665 /* remove topology */ 666 snd_soc_tplg_component_remove(component); 667 } 668 669 static int sof_pcm_ack(struct snd_soc_component *component, 670 struct snd_pcm_substream *substream) 671 { 672 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 673 674 return snd_sof_pcm_platform_ack(sdev, substream); 675 } 676 677 static snd_pcm_sframes_t sof_pcm_delay(struct snd_soc_component *component, 678 struct snd_pcm_substream *substream) 679 { 680 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 681 const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm); 682 683 if (pcm_ops && pcm_ops->delay) 684 return pcm_ops->delay(component, substream); 685 686 return 0; 687 } 688 689 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 690 { 691 struct snd_soc_component_driver *pd = &sdev->plat_drv; 692 struct snd_sof_pdata *plat_data = sdev->pdata; 693 const char *drv_name; 694 695 if (plat_data->machine) 696 drv_name = plat_data->machine->drv_name; 697 else if (plat_data->of_machine) 698 drv_name = plat_data->of_machine->drv_name; 699 else 700 drv_name = NULL; 701 702 pd->name = "sof-audio-component"; 703 pd->probe = sof_pcm_probe; 704 pd->remove = sof_pcm_remove; 705 pd->open = sof_pcm_open; 706 pd->close = sof_pcm_close; 707 pd->hw_params = sof_pcm_hw_params; 708 pd->prepare = sof_pcm_prepare; 709 pd->hw_free = sof_pcm_hw_free; 710 pd->trigger = sof_pcm_trigger; 711 pd->pointer = sof_pcm_pointer; 712 pd->ack = sof_pcm_ack; 713 pd->delay = sof_pcm_delay; 714 715 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 716 pd->compress_ops = &sof_compressed_ops; 717 #endif 718 719 pd->pcm_construct = sof_pcm_new; 720 pd->ignore_machine = drv_name; 721 pd->be_pcm_base = SOF_BE_PCM_BASE; 722 pd->use_dai_pcm_id = true; 723 pd->topology_name_prefix = "sof"; 724 725 /* increment module refcount when a pcm is opened */ 726 pd->module_get_upon_open = 1; 727 728 pd->legacy_dai_naming = 1; 729 730 /* 731 * The fixup is only needed when the DSP is in use as with the DSPless 732 * mode we are directly using the audio interface 733 */ 734 if (!sdev->dspless_mode_selected) 735 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 736 } 737