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-rw-r--r--sound/soc/sof/pcm.c736
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 000000000..d778717ca
--- /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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 19:30:05 +0000