Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 736 insertions, 0 deletions

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
new file mode 100644
index 0000000000..d778717cab
--- /dev/null
+++ b/sound/soc/sof/pcm.c
@@ -0,0 +1,736 @@
+// SPDX-License-Identifier: (GPL-2.0-only 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 <liam.r.girdwood@linux.intel.com>
+//
+// PCM Layer, interface between ALSA and IPC.
+//
+
+#include <linux/pm_runtime.h>
+#include <sound/pcm_params.h>
+#include <sound/sof.h>
+#include <trace/events/sof.h>
+#include "sof-of-dev.h"
+#include "sof-priv.h"
+#include "sof-audio.h"
+#include "sof-utils.h"
+#include "ops.h"
+
+/* 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 = asoc_substream_to_rtd(substream);
+	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(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	return snd_sof_create_page_table(component->dev, dmab,
+		spcm->stream[stream].page_table.area, size);
+}
+
+/*
+ * sof pcm period elapse work
+ */
+static void snd_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);
+}
+
+void snd_sof_pcm_init_elapsed_work(struct work_struct *work)
+{
+	 INIT_WORK(work, snd_sof_pcm_period_elapsed_work);
+}
+
+/*
+ * 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 = asoc_substream_to_rtd(substream);
+	struct snd_soc_component *component =
+		snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
+	struct snd_sof_pcm *spcm;
+
+	spcm = snd_sof_find_spcm_dai(component, rtd);
+	if (!spcm) {
+		dev_err(component->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);
+
+static int
+sof_pcm_setup_connected_widgets(struct snd_sof_dev *sdev, struct snd_soc_pcm_runtime *rtd,
+				struct snd_sof_pcm *spcm, struct snd_pcm_hw_params *params,
+				struct snd_sof_platform_stream_params *platform_params, int dir)
+{
+	struct snd_soc_dai *dai;
+	int ret, j;
+
+	/* query DAPM for list of connected widgets and set them up */
+	for_each_rtd_cpu_dais(rtd, j, dai) {
+		struct snd_soc_dapm_widget_list *list;
+
+		ret = snd_soc_dapm_dai_get_connected_widgets(dai, dir, &list,
+							     dpcm_end_walk_at_be);
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: dai %s has no valid %s path\n", dai->name,
+				dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
+			return ret;
+		}
+
+		spcm->stream[dir].list = list;
+
+		ret = sof_widget_list_setup(sdev, spcm, params, platform_params, dir);
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: failed widget list set up for pcm %d dir %d\n",
+				spcm->pcm.pcm_id, dir);
+			spcm->stream[dir].list = NULL;
+			snd_soc_dapm_dai_free_widgets(&list);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int sof_pcm_hw_params(struct snd_soc_component *component,
+			     struct snd_pcm_substream *substream,
+			     struct snd_pcm_hw_params *params)
+{
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm);
+	struct snd_sof_platform_stream_params platform_params = { 0 };
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	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(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	/*
+	 * Handle repeated calls to hw_params() without free_pcm() in
+	 * between. At least ALSA OSS emulation depends on this.
+	 */
+	if (pcm_ops && pcm_ops->hw_free && spcm->prepared[substream->stream]) {
+		ret = pcm_ops->hw_free(component, substream);
+		if (ret < 0)
+			return ret;
+
+		spcm->prepared[substream->stream] = false;
+	}
+
+	dev_dbg(component->dev, "pcm: hw params stream %d dir %d\n",
+		spcm->pcm.pcm_id, substream->stream);
+
+	ret = snd_sof_pcm_platform_hw_params(sdev, substream, params, &platform_params);
+	if (ret < 0) {
+		dev_err(component->dev, "platform hw params failed\n");
+		return ret;
+	}
+
+	/* if this is a repeated hw_params without hw_free, skip setting up widgets */
+	if (!spcm->stream[substream->stream].list) {
+		ret = sof_pcm_setup_connected_widgets(sdev, rtd, spcm, params, &platform_params,
+						      substream->stream);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* create compressed page table for audio firmware */
+	if (runtime->buffer_changed) {
+		ret = create_page_table(component, substream, runtime->dma_area,
+					runtime->dma_bytes);
+
+		if (ret < 0)
+			return ret;
+	}
+
+	if (pcm_ops && pcm_ops->hw_params) {
+		ret = pcm_ops->hw_params(component, substream, params, &platform_params);
+		if (ret < 0)
+			return ret;
+	}
+
+	spcm->prepared[substream->stream] = true;
+
+	/* save pcm hw_params */
+	memcpy(&spcm->params[substream->stream], params, sizeof(*params));
+
+	return 0;
+}
+
+static int sof_pcm_hw_free(struct snd_soc_component *component,
+			   struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm);
+	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(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	dev_dbg(component->dev, "pcm: free stream %d dir %d\n",
+		spcm->pcm.pcm_id, substream->stream);
+
+	if (spcm->prepared[substream->stream]) {
+		/* stop DMA first if needed */
+		if (pcm_ops && pcm_ops->platform_stop_during_hw_free)
+			snd_sof_pcm_platform_trigger(sdev, substream, SNDRV_PCM_TRIGGER_STOP);
+
+		/* free PCM in the DSP */
+		if (pcm_ops && pcm_ops->hw_free) {
+			ret = pcm_ops->hw_free(component, substream);
+			if (ret < 0)
+				err = ret;
+		}
+
+		spcm->prepared[substream->stream] = false;
+	}
+
+	/* reset DMA */
+	ret = snd_sof_pcm_platform_hw_free(sdev, substream);
+	if (ret < 0) {
+		dev_err(component->dev, "error: platform hw free failed\n");
+		err = ret;
+	}
+
+	/* free the DAPM widget list */
+	ret = sof_widget_list_free(sdev, spcm, substream->stream);
+	if (ret < 0)
+		err = ret;
+
+	cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
+
+	return err;
+}
+
+static int sof_pcm_prepare(struct snd_soc_component *component,
+			   struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	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(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	if (spcm->prepared[substream->stream])
+		return 0;
+
+	dev_dbg(component->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(component->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 = asoc_substream_to_rtd(substream);
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm);
+	struct snd_sof_pcm *spcm;
+	bool reset_hw_params = false;
+	bool ipc_first = false;
+	int ret = 0;
+
+	/* nothing to do for BE */
+	if (rtd->dai_link->no_pcm)
+		return 0;
+
+	spcm = snd_sof_find_spcm_dai(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n",
+		spcm->pcm.pcm_id, substream->stream, cmd);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		ipc_first = true;
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (pcm_ops && pcm_ops->ipc_first_on_start)
+			ipc_first = true;
+		break;
+	case SNDRV_PCM_TRIGGER_START:
+		if (spcm->stream[substream->stream].suspend_ignored) {
+			/*
+			 * This case will be triggered when INFO_RESUME is
+			 * not supported, no need to re-start streams that
+			 * remained enabled in D0ix.
+			 */
+			spcm->stream[substream->stream].suspend_ignored = false;
+			return 0;
+		}
+
+		if (pcm_ops && pcm_ops->ipc_first_on_start)
+			ipc_first = true;
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		if (sdev->system_suspend_target == SOF_SUSPEND_S0IX &&
+		    spcm->stream[substream->stream].d0i3_compatible) {
+			/*
+			 * trap the event, not sending trigger stop to
+			 * prevent the FW pipelines from being stopped,
+			 * and mark the flag to ignore the upcoming DAPM
+			 * PM events.
+			 */
+			spcm->stream[substream->stream].suspend_ignored = true;
+			return 0;
+		}
+
+		/* On suspend the DMA must be stopped in DSPless mode */
+		if (sdev->dspless_mode_selected)
+			reset_hw_params = true;
+
+		fallthrough;
+	case SNDRV_PCM_TRIGGER_STOP:
+		ipc_first = true;
+		if (pcm_ops && pcm_ops->reset_hw_params_during_stop)
+			reset_hw_params = true;
+		break;
+	default:
+		dev_err(component->dev, "Unhandled trigger cmd %d\n", cmd);
+		return -EINVAL;
+	}
+
+	if (!ipc_first)
+		snd_sof_pcm_platform_trigger(sdev, substream, cmd);
+
+	if (pcm_ops && pcm_ops->trigger)
+		ret = pcm_ops->trigger(component, substream, cmd);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+	case SNDRV_PCM_TRIGGER_START:
+		/* invoke platform trigger to start DMA only if pcm_ops is successful */
+		if (ipc_first && !ret)
+			snd_sof_pcm_platform_trigger(sdev, substream, cmd);
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_STOP:
+		/* invoke platform trigger to stop DMA even if pcm_ops isn't set or if it failed */
+		if (!pcm_ops || !pcm_ops->platform_stop_during_hw_free)
+			snd_sof_pcm_platform_trigger(sdev, substream, cmd);
+		break;
+	default:
+		break;
+	}
+
+	/* free PCM if reset_hw_params is set and the STOP IPC is successful */
+	if (!ret && reset_hw_params)
+		ret = sof_pcm_stream_free(sdev, substream, spcm, substream->stream, false);
+
+	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 = asoc_substream_to_rtd(substream);
+	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(component, 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);
+
+	trace_sof_pcm_pointer_position(sdev, spcm, substream, host, dai);
+
+	return host;
+}
+
+static int sof_pcm_open(struct snd_soc_component *component,
+			struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	struct snd_sof_dsp_ops *ops = sof_ops(sdev);
+	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(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	dev_dbg(component->dev, "pcm: open stream %d dir %d\n",
+		spcm->pcm.pcm_id, substream->stream);
+
+
+	caps = &spcm->pcm.caps[substream->stream];
+
+	/* set runtime config */
+	runtime->hw.info = ops->hw_info; /* platform-specific */
+
+	/* set any runtime constraints based on topology */
+	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(component->dev, "period min %zd max %zd bytes\n",
+		runtime->hw.period_bytes_min,
+		runtime->hw.period_bytes_max);
+	dev_dbg(component->dev, "period count %d max %d\n",
+		runtime->hw.periods_min,
+		runtime->hw.periods_max);
+	dev_dbg(component->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(component->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 = asoc_substream_to_rtd(substream);
+	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(component, rtd);
+	if (!spcm)
+		return -EINVAL;
+
+	dev_dbg(component->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(component->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(component, rtd);
+	if (!spcm) {
+		dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n",
+			 rtd->dai_link->id);
+		return 0;
+	}
+
+	dev_dbg(component->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(component->dev,
+		"spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n",
+		caps->name, caps->buffer_size_min, caps->buffer_size_max);
+
+	if (!pcm->streams[stream].substream) {
+		dev_err(component->dev, "error: NULL playback substream!\n");
+		return -EINVAL;
+	}
+
+	snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
+				   SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
+				   0, 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(component->dev,
+		"spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n",
+		caps->name, caps->buffer_size_min, caps->buffer_size_max);
+
+	if (!pcm->streams[stream].substream) {
+		dev_err(component->dev, "error: NULL capture substream!\n");
+		return -EINVAL;
+	}
+
+	snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
+				   SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
+				   0, le32_to_cpu(caps->buffer_size_max));
+
+	return 0;
+}
+
+/* fixup the BE DAI link to match any values from topology */
+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, SOF_AUDIO_PCM_DRV_NAME);
+	struct snd_sof_dai *dai =
+		snd_sof_find_dai(component, (char *)rtd->dai_link->name);
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm);
+
+	/* no topology exists for this BE, try a common configuration */
+	if (!dai) {
+		dev_warn(component->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;
+	}
+
+	if (pcm_ops && pcm_ops->dai_link_fixup)
+		return pcm_ops->dai_link_fixup(rtd, params);
+
+	return 0;
+}
+EXPORT_SYMBOL(sof_pcm_dai_link_fixup);
+
+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;
+
+	/*
+	 * make sure the device is pm_runtime_active before loading the
+	 * topology and initiating IPC or bus transactions
+	 */
+	ret = pm_runtime_resume_and_get(component->dev);
+	if (ret < 0 && ret != -EACCES)
+		return 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) {
+		ret = -ENOMEM;
+		goto pm_error;
+	}
+
+	ret = snd_sof_load_topology(component, tplg_filename);
+	if (ret < 0)
+		dev_err(component->dev, "error: failed to load DSP topology %d\n",
+			ret);
+
+pm_error:
+	pm_runtime_mark_last_busy(component->dev);
+	pm_runtime_put_autosuspend(component->dev);
+
+	return ret;
+}
+
+static void sof_pcm_remove(struct snd_soc_component *component)
+{
+	/* remove topology */
+	snd_soc_tplg_component_remove(component);
+}
+
+static int sof_pcm_ack(struct snd_soc_component *component,
+		       struct snd_pcm_substream *substream)
+{
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+
+	return snd_sof_pcm_platform_ack(sdev, substream);
+}
+
+static snd_pcm_sframes_t sof_pcm_delay(struct snd_soc_component *component,
+				       struct snd_pcm_substream *substream)
+{
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	const struct sof_ipc_pcm_ops *pcm_ops = sof_ipc_get_ops(sdev, pcm);
+
+	if (pcm_ops && pcm_ops->delay)
+		return pcm_ops->delay(component, substream);
+
+	return 0;
+}
+
+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;
+
+	if (plat_data->machine)
+		drv_name = plat_data->machine->drv_name;
+	else if (plat_data->of_machine)
+		drv_name = plat_data->of_machine->drv_name;
+	else
+		drv_name = NULL;
+
+	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->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->ack = sof_pcm_ack;
+	pd->delay = sof_pcm_delay;
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS)
+	pd->compress_ops = &sof_compressed_ops;
+#endif
+
+	pd->pcm_construct = sof_pcm_new;
+	pd->ignore_machine = drv_name;
+	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;
+
+	pd->legacy_dai_naming = 1;
+
+	/*
+	 * The fixup is only needed when the DSP is in use as with the DSPless
+	 * mode we are directly using the audio interface
+	 */
+	if (!sdev->dspless_mode_selected)
+		pd->be_hw_params_fixup = sof_pcm_dai_link_fixup;
+}