1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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.
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
10 // PCM Layer, interface between ALSA and IPC.
13 #include <linux/pm_runtime.h>
14 #include <sound/pcm_params.h>
15 #include <sound/sof.h>
19 #define DRV_NAME "sof-audio-component"
21 /* Create DMA buffer page table for DSP */
22 static int create_page_table(struct snd_soc_component *component,
23 struct snd_pcm_substream *substream,
24 unsigned char *dma_area, size_t size)
26 struct snd_soc_pcm_runtime *rtd = substream->private_data;
27 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
28 struct snd_sof_pcm *spcm;
29 struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream);
30 int stream = substream->stream;
32 spcm = snd_sof_find_spcm_dai(sdev, rtd);
36 return snd_sof_create_page_table(sdev->dev, dmab,
37 spcm->stream[stream].page_table.area, size);
40 static int sof_pcm_dsp_params(struct snd_sof_pcm *spcm, struct snd_pcm_substream *substream,
41 const struct sof_ipc_pcm_params_reply *reply)
43 struct snd_sof_dev *sdev = spcm->sdev;
45 int ret = snd_sof_ipc_pcm_params(sdev, substream, reply);
48 dev_err(sdev->dev, "error: got wrong reply for PCM %d\n",
55 * sof pcm period elapse work
57 static void sof_pcm_period_elapsed_work(struct work_struct *work)
59 struct snd_sof_pcm_stream *sps =
60 container_of(work, struct snd_sof_pcm_stream,
63 snd_pcm_period_elapsed(sps->substream);
67 * sof pcm period elapse, this could be called at irq thread context.
69 void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream)
71 struct snd_soc_pcm_runtime *rtd = substream->private_data;
72 struct snd_soc_component *component =
73 snd_soc_rtdcom_lookup(rtd, DRV_NAME);
74 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
75 struct snd_sof_pcm *spcm;
77 spcm = snd_sof_find_spcm_dai(sdev, rtd);
80 "error: period elapsed for unknown stream!\n");
85 * snd_pcm_period_elapsed() can be called in interrupt context
86 * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(),
87 * when the PCM is done draining or xrun happened, a STOP IPC will
88 * then be sent and this IPC will hit IPC timeout.
89 * To avoid sending IPC before the previous IPC is handled, we
90 * schedule delayed work here to call the snd_pcm_period_elapsed().
92 schedule_work(&spcm->stream[substream->stream].period_elapsed_work);
94 EXPORT_SYMBOL(snd_sof_pcm_period_elapsed);
96 /* this may get called several times by oss emulation */
97 static int sof_pcm_hw_params(struct snd_soc_component *component,
98 struct snd_pcm_substream *substream,
99 struct snd_pcm_hw_params *params)
101 struct snd_soc_pcm_runtime *rtd = substream->private_data;
102 struct snd_pcm_runtime *runtime = substream->runtime;
103 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
104 struct snd_sof_pcm *spcm;
105 struct sof_ipc_pcm_params pcm;
106 struct sof_ipc_pcm_params_reply ipc_params_reply;
109 /* nothing to do for BE */
110 if (rtd->dai_link->no_pcm)
113 spcm = snd_sof_find_spcm_dai(sdev, rtd);
117 dev_dbg(sdev->dev, "pcm: hw params stream %d dir %d\n",
118 spcm->pcm.pcm_id, substream->stream);
120 memset(&pcm, 0, sizeof(pcm));
122 /* allocate audio buffer pages */
123 ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
125 dev_err(sdev->dev, "error: could not allocate %d bytes for PCM %d\n",
126 params_buffer_bytes(params), spcm->pcm.pcm_id);
131 * ret == 1 means the buffer is changed
132 * create compressed page table for audio firmware
133 * ret == 0 means the buffer is not changed
134 * so no need to regenerate the page table
136 ret = create_page_table(component, substream, runtime->dma_area,
142 /* number of pages should be rounded up */
143 pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes);
145 /* set IPC PCM parameters */
146 pcm.hdr.size = sizeof(pcm);
147 pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS;
148 pcm.comp_id = spcm->stream[substream->stream].comp_id;
149 pcm.params.hdr.size = sizeof(pcm.params);
150 pcm.params.buffer.phy_addr =
151 spcm->stream[substream->stream].page_table.addr;
152 pcm.params.buffer.size = runtime->dma_bytes;
153 pcm.params.direction = substream->stream;
154 pcm.params.sample_valid_bytes = params_width(params) >> 3;
155 pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED;
156 pcm.params.rate = params_rate(params);
157 pcm.params.channels = params_channels(params);
158 pcm.params.host_period_bytes = params_period_bytes(params);
161 ret = snd_pcm_format_physical_width(params_format(params));
164 pcm.params.sample_container_bytes = ret >> 3;
167 switch (params_format(params)) {
168 case SNDRV_PCM_FORMAT_S16:
169 pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE;
171 case SNDRV_PCM_FORMAT_S24:
172 pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE;
174 case SNDRV_PCM_FORMAT_S32:
175 pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE;
177 case SNDRV_PCM_FORMAT_FLOAT:
178 pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT;
184 /* firmware already configured host stream */
185 ret = snd_sof_pcm_platform_hw_params(sdev,
190 dev_err(sdev->dev, "error: platform hw params failed\n");
194 dev_dbg(sdev->dev, "stream_tag %d", pcm.params.stream_tag);
196 /* send IPC to the DSP */
197 ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm),
198 &ipc_params_reply, sizeof(ipc_params_reply));
200 dev_err(sdev->dev, "error: hw params ipc failed for stream %d\n",
201 pcm.params.stream_tag);
205 ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply);
209 spcm->prepared[substream->stream] = true;
211 /* save pcm hw_params */
212 memcpy(&spcm->params[substream->stream], params, sizeof(*params));
217 static int sof_pcm_dsp_pcm_free(struct snd_pcm_substream *substream,
218 struct snd_sof_dev *sdev,
219 struct snd_sof_pcm *spcm)
221 struct sof_ipc_stream stream;
222 struct sof_ipc_reply reply;
225 stream.hdr.size = sizeof(stream);
226 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE;
227 stream.comp_id = spcm->stream[substream->stream].comp_id;
229 /* send IPC to the DSP */
230 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream,
231 sizeof(stream), &reply, sizeof(reply));
233 spcm->prepared[substream->stream] = false;
238 static int sof_pcm_hw_free(struct snd_soc_component *component,
239 struct snd_pcm_substream *substream)
241 struct snd_soc_pcm_runtime *rtd = substream->private_data;
242 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
243 struct snd_sof_pcm *spcm;
246 /* nothing to do for BE */
247 if (rtd->dai_link->no_pcm)
250 spcm = snd_sof_find_spcm_dai(sdev, rtd);
254 dev_dbg(sdev->dev, "pcm: free stream %d dir %d\n", spcm->pcm.pcm_id,
257 if (spcm->prepared[substream->stream]) {
258 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm);
263 snd_pcm_lib_free_pages(substream);
265 cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
267 ret = snd_sof_pcm_platform_hw_free(sdev, substream);
269 dev_err(sdev->dev, "error: platform hw free failed\n");
276 static int sof_pcm_prepare(struct snd_soc_component *component,
277 struct snd_pcm_substream *substream)
279 struct snd_soc_pcm_runtime *rtd = substream->private_data;
280 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
281 struct snd_sof_pcm *spcm;
284 /* nothing to do for BE */
285 if (rtd->dai_link->no_pcm)
288 spcm = snd_sof_find_spcm_dai(sdev, rtd);
292 if (spcm->prepared[substream->stream])
295 dev_dbg(sdev->dev, "pcm: prepare stream %d dir %d\n", spcm->pcm.pcm_id,
299 ret = sof_pcm_hw_params(component,
300 substream, &spcm->params[substream->stream]);
302 dev_err(sdev->dev, "error: set pcm hw_params after resume\n");
310 * FE dai link trigger actions are always executed in non-atomic context because
311 * they involve IPC's.
313 static int sof_pcm_trigger(struct snd_soc_component *component,
314 struct snd_pcm_substream *substream, int cmd)
316 struct snd_soc_pcm_runtime *rtd = substream->private_data;
317 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
318 struct snd_sof_pcm *spcm;
319 struct sof_ipc_stream stream;
320 struct sof_ipc_reply reply;
321 bool reset_hw_params = false;
322 bool ipc_first = false;
325 /* nothing to do for BE */
326 if (rtd->dai_link->no_pcm)
329 spcm = snd_sof_find_spcm_dai(sdev, rtd);
333 dev_dbg(sdev->dev, "pcm: trigger stream %d dir %d cmd %d\n",
334 spcm->pcm.pcm_id, substream->stream, cmd);
336 stream.hdr.size = sizeof(stream);
337 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG;
338 stream.comp_id = spcm->stream[substream->stream].comp_id;
341 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
342 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE;
345 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
346 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE;
348 case SNDRV_PCM_TRIGGER_RESUME:
349 if (spcm->stream[substream->stream].suspend_ignored) {
351 * this case will be triggered when INFO_RESUME is
352 * supported, no need to resume streams that remained
355 spcm->stream[substream->stream].suspend_ignored = false;
359 /* set up hw_params */
360 ret = sof_pcm_prepare(component, substream);
363 "error: failed to set up hw_params upon resume\n");
368 case SNDRV_PCM_TRIGGER_START:
369 if (spcm->stream[substream->stream].suspend_ignored) {
371 * This case will be triggered when INFO_RESUME is
372 * not supported, no need to re-start streams that
373 * remained enabled in D0ix.
375 spcm->stream[substream->stream].suspend_ignored = false;
378 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
380 case SNDRV_PCM_TRIGGER_SUSPEND:
381 if (sdev->s0_suspend &&
382 spcm->stream[substream->stream].d0i3_compatible) {
384 * trap the event, not sending trigger stop to
385 * prevent the FW pipelines from being stopped,
386 * and mark the flag to ignore the upcoming DAPM
389 spcm->stream[substream->stream].suspend_ignored = true;
393 case SNDRV_PCM_TRIGGER_STOP:
394 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP;
396 reset_hw_params = true;
399 dev_err(sdev->dev, "error: unhandled trigger cmd %d\n", cmd);
404 * DMA and IPC sequence is different for start and stop. Need to send
405 * STOP IPC before stop DMA
408 snd_sof_pcm_platform_trigger(sdev, substream, cmd);
410 /* send IPC to the DSP */
411 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream,
412 sizeof(stream), &reply, sizeof(reply));
414 /* need to STOP DMA even if STOP IPC failed */
416 snd_sof_pcm_platform_trigger(sdev, substream, cmd);
418 /* free PCM if reset_hw_params is set and the STOP IPC is successful */
419 if (!ret && reset_hw_params)
420 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm);
425 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component,
426 struct snd_pcm_substream *substream)
428 struct snd_soc_pcm_runtime *rtd = substream->private_data;
429 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
430 struct snd_sof_pcm *spcm;
431 snd_pcm_uframes_t host, dai;
433 /* nothing to do for BE */
434 if (rtd->dai_link->no_pcm)
437 /* use dsp ops pointer callback directly if set */
438 if (sof_ops(sdev)->pcm_pointer)
439 return sof_ops(sdev)->pcm_pointer(sdev, substream);
441 spcm = snd_sof_find_spcm_dai(sdev, rtd);
445 /* read position from DSP */
446 host = bytes_to_frames(substream->runtime,
447 spcm->stream[substream->stream].posn.host_posn);
448 dai = bytes_to_frames(substream->runtime,
449 spcm->stream[substream->stream].posn.dai_posn);
451 dev_dbg(sdev->dev, "PCM: stream %d dir %d DMA position %lu DAI position %lu\n",
452 spcm->pcm.pcm_id, substream->stream, host, dai);
457 static int sof_pcm_open(struct snd_soc_component *component,
458 struct snd_pcm_substream *substream)
460 struct snd_soc_pcm_runtime *rtd = substream->private_data;
461 struct snd_pcm_runtime *runtime = substream->runtime;
462 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
463 const struct snd_sof_dsp_ops *ops = sof_ops(sdev);
464 struct snd_sof_pcm *spcm;
465 struct snd_soc_tplg_stream_caps *caps;
468 /* nothing to do for BE */
469 if (rtd->dai_link->no_pcm)
472 spcm = snd_sof_find_spcm_dai(sdev, rtd);
476 dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id,
479 INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
480 sof_pcm_period_elapsed_work);
482 caps = &spcm->pcm.caps[substream->stream];
484 /* set any runtime constraints based on topology */
485 snd_pcm_hw_constraint_step(substream->runtime, 0,
486 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
487 le32_to_cpu(caps->period_size_min));
488 snd_pcm_hw_constraint_step(substream->runtime, 0,
489 SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
490 le32_to_cpu(caps->period_size_min));
492 /* set runtime config */
493 runtime->hw.info = ops->hw_info; /* platform-specific */
495 runtime->hw.formats = le64_to_cpu(caps->formats);
496 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min);
497 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max);
498 runtime->hw.periods_min = le32_to_cpu(caps->periods_min);
499 runtime->hw.periods_max = le32_to_cpu(caps->periods_max);
502 * caps->buffer_size_min is not used since the
503 * snd_pcm_hardware structure only defines buffer_bytes_max
505 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max);
507 dev_dbg(sdev->dev, "period min %zd max %zd bytes\n",
508 runtime->hw.period_bytes_min,
509 runtime->hw.period_bytes_max);
510 dev_dbg(sdev->dev, "period count %d max %d\n",
511 runtime->hw.periods_min,
512 runtime->hw.periods_max);
513 dev_dbg(sdev->dev, "buffer max %zd bytes\n",
514 runtime->hw.buffer_bytes_max);
516 /* set wait time - TODO: come from topology */
517 substream->wait_time = 500;
519 spcm->stream[substream->stream].posn.host_posn = 0;
520 spcm->stream[substream->stream].posn.dai_posn = 0;
521 spcm->stream[substream->stream].substream = substream;
522 spcm->prepared[substream->stream] = false;
524 ret = snd_sof_pcm_platform_open(sdev, substream);
526 dev_err(sdev->dev, "error: pcm open failed %d\n", ret);
531 static int sof_pcm_close(struct snd_soc_component *component,
532 struct snd_pcm_substream *substream)
534 struct snd_soc_pcm_runtime *rtd = substream->private_data;
535 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
536 struct snd_sof_pcm *spcm;
539 /* nothing to do for BE */
540 if (rtd->dai_link->no_pcm)
543 spcm = snd_sof_find_spcm_dai(sdev, rtd);
547 dev_dbg(sdev->dev, "pcm: close stream %d dir %d\n", spcm->pcm.pcm_id,
550 err = snd_sof_pcm_platform_close(sdev, substream);
552 dev_err(sdev->dev, "error: pcm close failed %d\n",
555 * keep going, no point in preventing the close
564 * Pre-allocate playback/capture audio buffer pages.
565 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free
566 * snd_pcm_lib_preallocate_free_for_all() is called by the core.
568 static int sof_pcm_new(struct snd_soc_component *component,
569 struct snd_soc_pcm_runtime *rtd)
571 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
572 struct snd_sof_pcm *spcm;
573 struct snd_pcm *pcm = rtd->pcm;
574 struct snd_soc_tplg_stream_caps *caps;
575 int stream = SNDRV_PCM_STREAM_PLAYBACK;
577 /* find SOF PCM for this RTD */
578 spcm = snd_sof_find_spcm_dai(sdev, rtd);
580 dev_warn(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
585 dev_dbg(sdev->dev, "creating new PCM %s\n", spcm->pcm.pcm_name);
587 /* do we need to pre-allocate playback audio buffer pages */
588 if (!spcm->pcm.playback)
591 caps = &spcm->pcm.caps[stream];
593 /* pre-allocate playback audio buffer pages */
594 dev_dbg(sdev->dev, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n",
595 caps->name, caps->buffer_size_min, caps->buffer_size_max);
597 snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream,
598 SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
599 le32_to_cpu(caps->buffer_size_min),
600 le32_to_cpu(caps->buffer_size_max));
602 stream = SNDRV_PCM_STREAM_CAPTURE;
604 /* do we need to pre-allocate capture audio buffer pages */
605 if (!spcm->pcm.capture)
608 caps = &spcm->pcm.caps[stream];
610 /* pre-allocate capture audio buffer pages */
611 dev_dbg(sdev->dev, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n",
612 caps->name, caps->buffer_size_min, caps->buffer_size_max);
614 snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream,
615 SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
616 le32_to_cpu(caps->buffer_size_min),
617 le32_to_cpu(caps->buffer_size_max));
622 /* fixup the BE DAI link to match any values from topology */
623 static int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
624 struct snd_pcm_hw_params *params)
626 struct snd_interval *rate = hw_param_interval(params,
627 SNDRV_PCM_HW_PARAM_RATE);
628 struct snd_interval *channels = hw_param_interval(params,
629 SNDRV_PCM_HW_PARAM_CHANNELS);
630 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
631 struct snd_soc_component *component =
632 snd_soc_rtdcom_lookup(rtd, DRV_NAME);
633 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
634 struct snd_sof_dai *dai =
635 snd_sof_find_dai(sdev, (char *)rtd->dai_link->name);
637 /* no topology exists for this BE, try a common configuration */
639 dev_warn(sdev->dev, "warning: no topology found for BE DAI %s config\n",
640 rtd->dai_link->name);
642 /* set 48k, stereo, 16bits by default */
650 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
655 /* read format from topology */
658 switch (dai->comp_dai.config.frame_fmt) {
659 case SOF_IPC_FRAME_S16_LE:
660 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
662 case SOF_IPC_FRAME_S24_4LE:
663 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
665 case SOF_IPC_FRAME_S32_LE:
666 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE);
669 dev_err(sdev->dev, "error: No available DAI format!\n");
673 /* read rate and channels from topology */
674 switch (dai->dai_config->type) {
675 case SOF_DAI_INTEL_SSP:
676 rate->min = dai->dai_config->ssp.fsync_rate;
677 rate->max = dai->dai_config->ssp.fsync_rate;
678 channels->min = dai->dai_config->ssp.tdm_slots;
679 channels->max = dai->dai_config->ssp.tdm_slots;
682 "rate_min: %d rate_max: %d\n", rate->min, rate->max);
684 "channels_min: %d channels_max: %d\n",
685 channels->min, channels->max);
688 case SOF_DAI_INTEL_DMIC:
689 /* DMIC only supports 16 or 32 bit formats */
690 if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) {
692 "error: invalid fmt %d for DAI type %d\n",
693 dai->comp_dai.config.frame_fmt,
694 dai->dai_config->type);
697 case SOF_DAI_INTEL_HDA:
698 /* do nothing for HDA dai_link */
700 case SOF_DAI_INTEL_ALH:
701 /* do nothing for ALH dai_link */
703 case SOF_DAI_IMX_ESAI:
704 channels->min = dai->dai_config->esai.tdm_slots;
705 channels->max = dai->dai_config->esai.tdm_slots;
708 "channels_min: %d channels_max: %d\n",
709 channels->min, channels->max);
712 dev_err(sdev->dev, "error: invalid DAI type %d\n",
713 dai->dai_config->type);
720 static int sof_pcm_probe(struct snd_soc_component *component)
722 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
723 struct snd_sof_pdata *plat_data = sdev->pdata;
724 const char *tplg_filename;
727 /* load the default topology */
728 sdev->component = component;
730 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL,
732 plat_data->tplg_filename_prefix,
733 plat_data->tplg_filename);
737 ret = snd_sof_load_topology(sdev, tplg_filename);
739 dev_err(sdev->dev, "error: failed to load DSP topology %d\n",
747 static void sof_pcm_remove(struct snd_soc_component *component)
749 /* remove topology */
750 snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL);
753 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev)
755 struct snd_soc_component_driver *pd = &sdev->plat_drv;
756 struct snd_sof_pdata *plat_data = sdev->pdata;
757 const char *drv_name;
759 drv_name = plat_data->machine->drv_name;
761 pd->name = "sof-audio-component";
762 pd->probe = sof_pcm_probe;
763 pd->remove = sof_pcm_remove;
764 pd->open = sof_pcm_open;
765 pd->close = sof_pcm_close;
766 pd->ioctl = snd_soc_pcm_lib_ioctl;
767 pd->hw_params = sof_pcm_hw_params;
768 pd->prepare = sof_pcm_prepare;
769 pd->hw_free = sof_pcm_hw_free;
770 pd->trigger = sof_pcm_trigger;
771 pd->pointer = sof_pcm_pointer;
773 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS)
774 pd->compr_ops = &sof_compressed_ops;
776 pd->pcm_construct = sof_pcm_new;
777 pd->ignore_machine = drv_name;
778 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup;
779 pd->be_pcm_base = SOF_BE_PCM_BASE;
780 pd->use_dai_pcm_id = true;
781 pd->topology_name_prefix = "sof";
783 /* increment module refcount when a pcm is opened */
784 pd->module_get_upon_open = 1;