Merge series "Add support for on demand pipeline setup/destroy" from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

Hi,

The previous, v2 of this series was sent by Daniel Baluta:
https://lore.kernel.org/alsa-devel/20210917143659.401102-1-daniel.baluta@oss.nxp.com/

We have agreed that it might be better that someone from Intel is going to take it
from here as we already have the infrastructure up to test and verify the
dynamic pipelines support.

Changes since v2 (sent by Daniel Baluta):
- patch 10: Fix NULL point dereference in hda_dai_update_config()
- I have kept Daniel's SoB for the series.

Changes since v1:
- Signed-off-by tag added by Daniel

This series implements initial support for dynamic pipelines to setup/teardown
pipeline as needed when a PCM is open/closed.

Initially dynamic pipelines are only supported with single core setup which will
be expanded with a follow-up series.

Review with SOF community at
https://github.com/thesofproject/linux/pull/2794

The feature has been merged on 1st of April to sof-dev, all issues found since
has been fixed and squashed to this upstream series.

Regards,
Peter
---
Ranjani Sridharan (12):
  ASoC: topology: change the complete op in snd_soc_tplg_ops to return
    int
  ASoC: SOF: control: Add access field in struct snd_sof_control
  ASoC: SOF: topology: Add new token for dynamic pipeline
  ASoC: SOF: sof-audio: add helpers for widgets, kcontrols and dai
    config set up
  AsoC: dapm: export a couple of functions
  ASoC: SOF: Add new fields to snd_sof_route
  ASoC: SOF: restore kcontrols for widget during set up
  ASoC: SOF: Don't set up widgets during topology parsing
  ASoC: SOF: Introduce widget use_count
  ASoC: SOF: Intel: hda: make sure DAI widget is set up before IPC
  ASoC: SOF: Add support for dynamic pipelines
  ASoC: SOF: topology: Add kernel parameter for topology verification

 include/sound/soc-dpcm.h               |   1 +
 include/sound/soc-topology.h           |   2 +-
 include/uapi/sound/sof/tokens.h        |   1 +
 sound/soc/intel/skylake/skl-topology.c |   6 +-
 sound/soc/soc-dapm.c                   |   2 +
 sound/soc/soc-pcm.c                    |   4 +-
 sound/soc/soc-topology.c               |  10 +-
 sound/soc/sof/intel/hda-dai.c          | 174 +++---
 sound/soc/sof/intel/hda.c              | 177 ++++--
 sound/soc/sof/intel/hda.h              |   5 +
 sound/soc/sof/ipc.c                    |  22 +
 sound/soc/sof/pcm.c                    |  58 +-
 sound/soc/sof/pm.c                     |   4 +-
 sound/soc/sof/sof-audio.c              | 709 +++++++++++++++++++------
 sound/soc/sof/sof-audio.h              |  32 +-
 sound/soc/sof/sof-priv.h               |   1 +
 sound/soc/sof/topology.c               | 362 +++++--------
 17 files changed, 1032 insertions(+), 538 deletions(-)

--
2.33.0

1 files changed, 130 insertions, 47 deletions

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index c11e4c14d875..066e90506ae6 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -41,6 +41,86 @@
 #define EXCEPT_MAX_HDR_SIZE	0x400
 #define HDA_EXT_ROM_STATUS_SIZE 8
 
+int hda_ctrl_dai_widget_setup(struct snd_soc_dapm_widget *w)
+{
+	struct snd_sof_widget *swidget = w->dobj.private;
+	struct snd_soc_component *component = swidget->scomp;
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	struct sof_ipc_dai_config *config;
+	struct snd_sof_dai *sof_dai;
+	struct sof_ipc_reply reply;
+	int ret;
+
+	sof_dai = swidget->private;
+
+	if (!sof_dai || !sof_dai->dai_config) {
+		dev_err(sdev->dev, "No config for DAI %s\n", w->name);
+		return -EINVAL;
+	}
+
+	config = &sof_dai->dai_config[sof_dai->current_config];
+
+	/*
+	 * For static pipelines, the DAI widget would already be set up and calling
+	 * sof_widget_setup() simply returns without doing anything.
+	 * For dynamic pipelines, the DAI widget will be set up now.
+	 */
+	ret = sof_widget_setup(sdev, swidget);
+	if (ret < 0) {
+		dev_err(sdev->dev, "error: failed setting up DAI widget %s\n", w->name);
+		return ret;
+	}
+
+	/* send DAI_CONFIG IPC */
+	ret = sof_ipc_tx_message(sdev->ipc, config->hdr.cmd, config, config->hdr.size,
+				 &reply, sizeof(reply));
+	if (ret < 0) {
+		dev_err(sdev->dev, "error: failed setting DAI config for %s\n", w->name);
+		return ret;
+	}
+
+	sof_dai->configured = true;
+
+	return 0;
+}
+
+int hda_ctrl_dai_widget_free(struct snd_soc_dapm_widget *w)
+{
+	struct snd_sof_widget *swidget = w->dobj.private;
+	struct snd_soc_component *component = swidget->scomp;
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	struct sof_ipc_dai_config *config;
+	struct snd_sof_dai *sof_dai;
+	struct sof_ipc_reply reply;
+	int ret;
+
+	sof_dai = swidget->private;
+
+	if (!sof_dai || !sof_dai->dai_config) {
+		dev_err(sdev->dev, "error: No config to free DAI %s\n", w->name);
+		return -EINVAL;
+	}
+
+	/* nothing to do if hw_free() is called without restarting the stream after resume. */
+	if (!sof_dai->configured)
+		return 0;
+
+	config = &sof_dai->dai_config[sof_dai->current_config];
+
+	ret = sof_ipc_tx_message(sdev->ipc, config->hdr.cmd, config, config->hdr.size,
+				 &reply, sizeof(reply));
+	if (ret < 0)
+		dev_err(sdev->dev, "error: failed resetting DAI config for %s\n", w->name);
+
+	/*
+	 * Reset the configured_flag and free the widget even if the IPC fails to keep
+	 * the widget use_count balanced
+	 */
+	sof_dai->configured = false;
+
+	return sof_widget_free(sdev, swidget);
+}
+
 static const struct sof_intel_dsp_desc
 	*get_chip_info(struct snd_sof_pdata *pdata)
 {
@@ -64,67 +144,70 @@ static int sdw_clock_stop_quirks = SDW_INTEL_CLK_STOP_BUS_RESET;
 module_param(sdw_clock_stop_quirks, int, 0444);
 MODULE_PARM_DESC(sdw_clock_stop_quirks, "SOF SoundWire clock stop quirks");
 
+static int sdw_dai_config_ipc(struct snd_sof_dev *sdev,
+			      struct snd_soc_dapm_widget *w,
+			      int link_id, int alh_stream_id, int dai_id, bool setup)
+{
+	struct snd_sof_widget *swidget = w->dobj.private;
+	struct sof_ipc_dai_config *config;
+	struct snd_sof_dai *sof_dai;
+
+	if (!swidget) {
+		dev_err(sdev->dev, "error: No private data for widget %s\n", w->name);
+		return -EINVAL;
+	}
+
+	sof_dai = swidget->private;
+
+	if (!sof_dai || !sof_dai->dai_config) {
+		dev_err(sdev->dev, "error: No config for DAI %s\n", w->name);
+		return -EINVAL;
+	}
+
+	config = &sof_dai->dai_config[sof_dai->current_config];
+
+	/* update config with link and stream ID */
+	config->dai_index = (link_id << 8) | dai_id;
+	config->alh.stream_id = alh_stream_id;
+
+	if (setup)
+		return hda_ctrl_dai_widget_setup(w);
+
+	return hda_ctrl_dai_widget_free(w);
+}
+
 static int sdw_params_stream(struct device *dev,
 			     struct sdw_intel_stream_params_data *params_data)
 {
+	struct snd_pcm_substream *substream = params_data->substream;
 	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
 	struct snd_soc_dai *d = params_data->dai;
-	struct sof_ipc_dai_config config;
-	struct sof_ipc_reply reply;
-	int link_id = params_data->link_id;
-	int alh_stream_id = params_data->alh_stream_id;
-	int ret;
-	u32 size = sizeof(config);
-
-	memset(&config, 0, size);
-	config.hdr.size = size;
-	config.hdr.cmd = SOF_IPC_GLB_DAI_MSG | SOF_IPC_DAI_CONFIG;
-	config.type = SOF_DAI_INTEL_ALH;
-	config.dai_index = (link_id << 8) | (d->id);
-	config.alh.stream_id = alh_stream_id;
-
-	/* send message to DSP */
-	ret = sof_ipc_tx_message(sdev->ipc,
-				 config.hdr.cmd, &config, size, &reply,
-				 sizeof(reply));
-	if (ret < 0) {
-		dev_err(sdev->dev,
-			"error: failed to set DAI hw_params for link %d dai->id %d ALH %d\n",
-			link_id, d->id, alh_stream_id);
-	}
+	struct snd_soc_dapm_widget *w;
 
-	return ret;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		w = d->playback_widget;
+	else
+		w = d->capture_widget;
+
+	return sdw_dai_config_ipc(sdev, w, params_data->link_id, params_data->alh_stream_id,
+				  d->id, true);
 }
 
 static int sdw_free_stream(struct device *dev,
 			   struct sdw_intel_stream_free_data *free_data)
 {
+	struct snd_pcm_substream *substream = free_data->substream;
 	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
 	struct snd_soc_dai *d = free_data->dai;
-	struct sof_ipc_dai_config config;
-	struct sof_ipc_reply reply;
-	int link_id = free_data->link_id;
-	int ret;
-	u32 size = sizeof(config);
-
-	memset(&config, 0, size);
-	config.hdr.size = size;
-	config.hdr.cmd = SOF_IPC_GLB_DAI_MSG | SOF_IPC_DAI_CONFIG;
-	config.type = SOF_DAI_INTEL_ALH;
-	config.dai_index = (link_id << 8) | d->id;
-	config.alh.stream_id = 0xFFFF; /* invalid value on purpose */
-
-	/* send message to DSP */
-	ret = sof_ipc_tx_message(sdev->ipc,
-				 config.hdr.cmd, &config, size, &reply,
-				 sizeof(reply));
-	if (ret < 0) {
-		dev_err(sdev->dev,
-			"error: failed to free stream for link %d dai->id %d\n",
-			link_id, d->id);
-	}
+	struct snd_soc_dapm_widget *w;
 
-	return ret;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		w = d->playback_widget;
+	else
+		w = d->capture_widget;
+
+	/* send invalid stream_id */
+	return sdw_dai_config_ipc(sdev, w, free_data->link_id, 0xFFFF, d->id, false);
 }
 
 static const struct sdw_intel_ops sdw_callback = {