// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) // // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // // Copyright(c) 2018 Intel Corporation. All rights reserved. // // Author: Liam Girdwood // // PCM Layer, interface between ALSA and IPC. // #include #include #include #include "sof-priv.h" #include "ops.h" #define DRV_NAME "sof-audio-component" /* Create DMA buffer page table for DSP */ static int create_page_table(struct snd_soc_component *component, struct snd_pcm_substream *substream, unsigned char *dma_area, size_t size) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream); int stream = substream->stream; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; return snd_sof_create_page_table(sdev, dmab, spcm->stream[stream].page_table.area, size); } static int sof_pcm_dsp_params(struct snd_sof_pcm *spcm, struct snd_pcm_substream *substream, const struct sof_ipc_pcm_params_reply *reply) { struct snd_sof_dev *sdev = spcm->sdev; /* validate offset */ int ret = snd_sof_ipc_pcm_params(sdev, substream, reply); if (ret < 0) dev_err(sdev->dev, "error: got wrong reply for PCM %d\n", spcm->pcm.pcm_id); return ret; } /* * sof pcm period elapse work */ static void sof_pcm_period_elapsed_work(struct work_struct *work) { struct snd_sof_pcm_stream *sps = container_of(work, struct snd_sof_pcm_stream, period_elapsed_work); snd_pcm_period_elapsed(sps->substream); } /* * sof pcm period elapse, this could be called at irq thread context. */ void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME); struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) { dev_err(sdev->dev, "error: period elapsed for unknown stream!\n"); return; } /* * snd_pcm_period_elapsed() can be called in interrupt context * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), * when the PCM is done draining or xrun happened, a STOP IPC will * then be sent and this IPC will hit IPC timeout. * To avoid sending IPC before the previous IPC is handled, we * schedule delayed work here to call the snd_pcm_period_elapsed(). */ schedule_work(&spcm->stream[substream->stream].period_elapsed_work); } EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); /* this may get called several times by oss emulation */ static int sof_pcm_hw_params(struct snd_soc_component *component, struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; struct sof_ipc_pcm_params pcm; struct sof_ipc_pcm_params_reply ipc_params_reply; int ret; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; dev_dbg(sdev->dev, "pcm: hw params stream %d dir %d\n", spcm->pcm.pcm_id, substream->stream); memset(&pcm, 0, sizeof(pcm)); /* allocate audio buffer pages */ ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); if (ret < 0) { dev_err(sdev->dev, "error: could not allocate %d bytes for PCM %d\n", params_buffer_bytes(params), spcm->pcm.pcm_id); return ret; } if (ret) { /* * ret == 1 means the buffer is changed * create compressed page table for audio firmware * ret == 0 means the buffer is not changed * so no need to regenerate the page table */ ret = create_page_table(component, substream, runtime->dma_area, runtime->dma_bytes); if (ret < 0) return ret; } /* number of pages should be rounded up */ pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes); /* set IPC PCM parameters */ pcm.hdr.size = sizeof(pcm); pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; pcm.comp_id = spcm->stream[substream->stream].comp_id; pcm.params.hdr.size = sizeof(pcm.params); pcm.params.buffer.phy_addr = spcm->stream[substream->stream].page_table.addr; pcm.params.buffer.size = runtime->dma_bytes; pcm.params.direction = substream->stream; pcm.params.sample_valid_bytes = params_width(params) >> 3; pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; pcm.params.rate = params_rate(params); pcm.params.channels = params_channels(params); pcm.params.host_period_bytes = params_period_bytes(params); /* container size */ ret = snd_pcm_format_physical_width(params_format(params)); if (ret < 0) return ret; pcm.params.sample_container_bytes = ret >> 3; /* format */ switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16: pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE; break; case SNDRV_PCM_FORMAT_S24: pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE; break; case SNDRV_PCM_FORMAT_S32: pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE; break; case SNDRV_PCM_FORMAT_FLOAT: pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT; break; default: return -EINVAL; } /* firmware already configured host stream */ ret = snd_sof_pcm_platform_hw_params(sdev, substream, params, &pcm.params); if (ret < 0) { dev_err(sdev->dev, "error: platform hw params failed\n"); return ret; } dev_dbg(sdev->dev, "stream_tag %d", pcm.params.stream_tag); /* send IPC to the DSP */ ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm), &ipc_params_reply, sizeof(ipc_params_reply)); if (ret < 0) { dev_err(sdev->dev, "error: hw params ipc failed for stream %d\n", pcm.params.stream_tag); return ret; } ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply); if (ret < 0) return ret; spcm->prepared[substream->stream] = true; /* save pcm hw_params */ memcpy(&spcm->params[substream->stream], params, sizeof(*params)); return ret; } static int sof_pcm_dsp_pcm_free(struct snd_pcm_substream *substream, struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm) { struct sof_ipc_stream stream; struct sof_ipc_reply reply; int ret; stream.hdr.size = sizeof(stream); stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; stream.comp_id = spcm->stream[substream->stream].comp_id; /* send IPC to the DSP */ ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, sizeof(stream), &reply, sizeof(reply)); if (!ret) spcm->prepared[substream->stream] = false; return ret; } static int sof_pcm_hw_free(struct snd_soc_component *component, struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; int ret, err = 0; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; dev_dbg(sdev->dev, "pcm: free stream %d dir %d\n", spcm->pcm.pcm_id, substream->stream); if (spcm->prepared[substream->stream]) { ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); if (ret < 0) err = ret; } snd_pcm_lib_free_pages(substream); cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); ret = snd_sof_pcm_platform_hw_free(sdev, substream); if (ret < 0) { dev_err(sdev->dev, "error: platform hw free failed\n"); err = ret; } return err; } static int sof_pcm_prepare(struct snd_soc_component *component, struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; int ret; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; if (spcm->prepared[substream->stream]) return 0; dev_dbg(sdev->dev, "pcm: prepare stream %d dir %d\n", spcm->pcm.pcm_id, substream->stream); /* set hw_params */ ret = sof_pcm_hw_params(component, substream, &spcm->params[substream->stream]); if (ret < 0) { dev_err(sdev->dev, "error: set pcm hw_params after resume\n"); return ret; } return 0; } /* * FE dai link trigger actions are always executed in non-atomic context because * they involve IPC's. */ static int sof_pcm_trigger(struct snd_soc_component *component, struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; struct sof_ipc_stream stream; struct sof_ipc_reply reply; bool reset_hw_params = false; bool ipc_first = false; int ret; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; dev_dbg(sdev->dev, "pcm: trigger stream %d dir %d cmd %d\n", spcm->pcm.pcm_id, substream->stream, cmd); stream.hdr.size = sizeof(stream); stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; stream.comp_id = spcm->stream[substream->stream].comp_id; switch (cmd) { case SNDRV_PCM_TRIGGER_PAUSE_PUSH: stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; ipc_first = true; break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; break; case SNDRV_PCM_TRIGGER_RESUME: /* set up hw_params */ ret = sof_pcm_prepare(component, substream); if (ret < 0) { dev_err(sdev->dev, "error: failed to set up hw_params upon resume\n"); return ret; } /* fallthrough */ case SNDRV_PCM_TRIGGER_START: stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; break; case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_STOP: stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; ipc_first = true; reset_hw_params = true; break; default: dev_err(sdev->dev, "error: unhandled trigger cmd %d\n", cmd); return -EINVAL; } /* * DMA and IPC sequence is different for start and stop. Need to send * STOP IPC before stop DMA */ if (!ipc_first) snd_sof_pcm_platform_trigger(sdev, substream, cmd); /* send IPC to the DSP */ ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, sizeof(stream), &reply, sizeof(reply)); /* need to STOP DMA even if STOP IPC failed */ if (ipc_first) snd_sof_pcm_platform_trigger(sdev, substream, cmd); /* free PCM if reset_hw_params is set and the STOP IPC is successful */ if (!ret && reset_hw_params) ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); return ret; } static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; snd_pcm_uframes_t host, dai; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; /* use dsp ops pointer callback directly if set */ if (sof_ops(sdev)->pcm_pointer) return sof_ops(sdev)->pcm_pointer(sdev, substream); spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; /* read position from DSP */ host = bytes_to_frames(substream->runtime, spcm->stream[substream->stream].posn.host_posn); dai = bytes_to_frames(substream->runtime, spcm->stream[substream->stream].posn.dai_posn); dev_dbg(sdev->dev, "PCM: stream %d dir %d DMA position %lu DAI position %lu\n", spcm->pcm.pcm_id, substream->stream, host, dai); return host; } #ifdef CONFIG_SND_DMA_SGBUF static struct page *sof_pcm_page(struct snd_soc_component *component, struct snd_pcm_substream *substream, unsigned long offset) { return snd_pcm_sgbuf_ops_page(substream, offset); } #else #define sof_pcm_page NULL #endif /* CONFIG_SND_DMA_SGBUF */ static int sof_pcm_open(struct snd_soc_component *component, struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; struct snd_soc_tplg_stream_caps *caps; int ret; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id, substream->stream); INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work, sof_pcm_period_elapsed_work); caps = &spcm->pcm.caps[substream->stream]; /* set any runtime constraints based on topology */ snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, le32_to_cpu(caps->period_size_min)); snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, le32_to_cpu(caps->period_size_min)); /* set runtime config */ runtime->hw.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP; runtime->hw.formats = le64_to_cpu(caps->formats); runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); runtime->hw.periods_min = le32_to_cpu(caps->periods_min); runtime->hw.periods_max = le32_to_cpu(caps->periods_max); /* * caps->buffer_size_min is not used since the * snd_pcm_hardware structure only defines buffer_bytes_max */ runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); dev_dbg(sdev->dev, "period min %zd max %zd bytes\n", runtime->hw.period_bytes_min, runtime->hw.period_bytes_max); dev_dbg(sdev->dev, "period count %d max %d\n", runtime->hw.periods_min, runtime->hw.periods_max); dev_dbg(sdev->dev, "buffer max %zd bytes\n", runtime->hw.buffer_bytes_max); /* set wait time - TODO: come from topology */ substream->wait_time = 500; spcm->stream[substream->stream].posn.host_posn = 0; spcm->stream[substream->stream].posn.dai_posn = 0; spcm->stream[substream->stream].substream = substream; spcm->prepared[substream->stream] = false; ret = snd_sof_pcm_platform_open(sdev, substream); if (ret < 0) dev_err(sdev->dev, "error: pcm open failed %d\n", ret); return ret; } static int sof_pcm_close(struct snd_soc_component *component, struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; int err; /* nothing to do for BE */ if (rtd->dai_link->no_pcm) return 0; spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) return -EINVAL; dev_dbg(sdev->dev, "pcm: close stream %d dir %d\n", spcm->pcm.pcm_id, substream->stream); err = snd_sof_pcm_platform_close(sdev, substream); if (err < 0) { dev_err(sdev->dev, "error: pcm close failed %d\n", err); /* * keep going, no point in preventing the close * from happening */ } return 0; } /* * Pre-allocate playback/capture audio buffer pages. * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free * snd_pcm_lib_preallocate_free_for_all() is called by the core. */ static int sof_pcm_new(struct snd_soc_component *component, struct snd_soc_pcm_runtime *rtd) { struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pcm *spcm; struct snd_pcm *pcm = rtd->pcm; struct snd_soc_tplg_stream_caps *caps; int stream = SNDRV_PCM_STREAM_PLAYBACK; /* find SOF PCM for this RTD */ spcm = snd_sof_find_spcm_dai(sdev, rtd); if (!spcm) { dev_warn(sdev->dev, "warn: can't find PCM with DAI ID %d\n", rtd->dai_link->id); return 0; } dev_dbg(sdev->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); /* do we need to pre-allocate playback audio buffer pages */ if (!spcm->pcm.playback) goto capture; caps = &spcm->pcm.caps[stream]; /* pre-allocate playback audio buffer pages */ dev_dbg(sdev->dev, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", caps->name, caps->buffer_size_min, caps->buffer_size_max); snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream, SNDRV_DMA_TYPE_DEV_SG, sdev->dev, le32_to_cpu(caps->buffer_size_min), le32_to_cpu(caps->buffer_size_max)); capture: stream = SNDRV_PCM_STREAM_CAPTURE; /* do we need to pre-allocate capture audio buffer pages */ if (!spcm->pcm.capture) return 0; caps = &spcm->pcm.caps[stream]; /* pre-allocate capture audio buffer pages */ dev_dbg(sdev->dev, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", caps->name, caps->buffer_size_min, caps->buffer_size_max); snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream, SNDRV_DMA_TYPE_DEV_SG, sdev->dev, le32_to_cpu(caps->buffer_size_min), le32_to_cpu(caps->buffer_size_max)); return 0; } /* fixup the BE DAI link to match any values from topology */ static int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) { struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME); struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_dai *dai = snd_sof_find_dai(sdev, (char *)rtd->dai_link->name); /* no topology exists for this BE, try a common configuration */ if (!dai) { dev_warn(sdev->dev, "warning: no topology found for BE DAI %s config\n", rtd->dai_link->name); /* set 48k, stereo, 16bits by default */ rate->min = 48000; rate->max = 48000; channels->min = 2; channels->max = 2; snd_mask_none(fmt); snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); return 0; } /* read format from topology */ snd_mask_none(fmt); switch (dai->comp_dai.config.frame_fmt) { case SOF_IPC_FRAME_S16_LE: snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); break; case SOF_IPC_FRAME_S24_4LE: snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); break; case SOF_IPC_FRAME_S32_LE: snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE); break; default: dev_err(sdev->dev, "error: No available DAI format!\n"); return -EINVAL; } /* read rate and channels from topology */ switch (dai->dai_config->type) { case SOF_DAI_INTEL_SSP: rate->min = dai->dai_config->ssp.fsync_rate; rate->max = dai->dai_config->ssp.fsync_rate; channels->min = dai->dai_config->ssp.tdm_slots; channels->max = dai->dai_config->ssp.tdm_slots; dev_dbg(sdev->dev, "rate_min: %d rate_max: %d\n", rate->min, rate->max); dev_dbg(sdev->dev, "channels_min: %d channels_max: %d\n", channels->min, channels->max); break; case SOF_DAI_INTEL_DMIC: /* DMIC only supports 16 or 32 bit formats */ if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) { dev_err(sdev->dev, "error: invalid fmt %d for DAI type %d\n", dai->comp_dai.config.frame_fmt, dai->dai_config->type); } break; case SOF_DAI_INTEL_HDA: /* do nothing for HDA dai_link */ break; case SOF_DAI_INTEL_ALH: /* do nothing for ALH dai_link */ break; default: dev_err(sdev->dev, "error: invalid DAI type %d\n", dai->dai_config->type); break; } return 0; } static int sof_pcm_probe(struct snd_soc_component *component) { struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); struct snd_sof_pdata *plat_data = sdev->pdata; const char *tplg_filename; int ret; /* load the default topology */ sdev->component = component; tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, "%s/%s", plat_data->tplg_filename_prefix, plat_data->tplg_filename); if (!tplg_filename) return -ENOMEM; ret = snd_sof_load_topology(sdev, tplg_filename); if (ret < 0) { dev_err(sdev->dev, "error: failed to load DSP topology %d\n", ret); return ret; } /* * Some platforms in SOF, ex: BYT, may not have their platform PM * callbacks set. Increment the usage count so as to * prevent the device from entering runtime suspend. */ if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume) pm_runtime_get_noresume(sdev->dev); return ret; } static void sof_pcm_remove(struct snd_soc_component *component) { /* remove topology */ snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL); } void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) { struct snd_soc_component_driver *pd = &sdev->plat_drv; struct snd_sof_pdata *plat_data = sdev->pdata; const char *drv_name; drv_name = plat_data->machine->drv_name; pd->name = "sof-audio-component"; pd->probe = sof_pcm_probe; pd->remove = sof_pcm_remove; pd->open = sof_pcm_open; pd->close = sof_pcm_close; pd->ioctl = snd_soc_pcm_lib_ioctl; pd->hw_params = sof_pcm_hw_params; pd->prepare = sof_pcm_prepare; pd->hw_free = sof_pcm_hw_free; pd->trigger = sof_pcm_trigger; pd->pointer = sof_pcm_pointer; pd->page = sof_pcm_page; #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) pd->compr_ops = &sof_compressed_ops; #endif pd->pcm_construct = sof_pcm_new; pd->ignore_machine = drv_name; pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; pd->be_pcm_base = SOF_BE_PCM_BASE; pd->use_dai_pcm_id = true; pd->topology_name_prefix = "sof"; /* increment module refcount when a pcm is opened */ pd->module_get_upon_open = 1; }