--- /dev/null
+// 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) 2022 Intel Corporation. All rights reserved.
+//
+
+#include <sound/pcm_params.h>
+#include <sound/sof/ipc4/header.h>
+#include "sof-audio.h"
+#include "sof-priv.h"
+#include "ipc4-priv.h"
+#include "ipc4-topology.h"
+
+static int sof_ipc4_set_pipeline_state(struct snd_sof_dev *sdev, u32 id, u32 state)
+{
+ struct sof_ipc4_msg msg = {{ 0 }};
+ u32 primary;
+
+ dev_dbg(sdev->dev, "ipc4 set pipeline %d state %d", id, state);
+
+ primary = state;
+ primary |= SOF_IPC4_GLB_PIPE_STATE_ID(id);
+ primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_GLB_SET_PIPELINE_STATE);
+ primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+ primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_FW_GEN_MSG);
+
+ msg.primary = primary;
+
+ return sof_ipc_tx_message(sdev->ipc, &msg, 0, NULL, 0);
+}
+
+static int sof_ipc4_trigger_pipelines(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int state)
+{
+ struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_sof_widget *pipeline_widget;
+ struct snd_soc_dapm_widget_list *list;
+ struct snd_soc_dapm_widget *widget;
+ struct sof_ipc4_pipeline *pipeline;
+ struct snd_sof_widget *swidget;
+ struct snd_sof_pcm *spcm;
+ int ret = 0;
+ int num_widgets;
+
+ spcm = snd_sof_find_spcm_dai(component, rtd);
+ if (!spcm)
+ return -EINVAL;
+
+ list = spcm->stream[substream->stream].list;
+
+ for_each_dapm_widgets(list, num_widgets, widget) {
+ swidget = widget->dobj.private;
+
+ if (!swidget)
+ continue;
+
+ /*
+ * set pipeline state for both FE and BE pipelines for RUNNING state.
+ * For PAUSE/RESET, set the pipeline state only for the FE pipeline.
+ */
+ switch (state) {
+ case SOF_IPC4_PIPE_PAUSED:
+ case SOF_IPC4_PIPE_RESET:
+ if (!WIDGET_IS_AIF(swidget->id))
+ continue;
+ break;
+ default:
+ break;
+ }
+
+ /* find pipeline widget for the pipeline that this widget belongs to */
+ pipeline_widget = swidget->pipe_widget;
+ pipeline = (struct sof_ipc4_pipeline *)pipeline_widget->private;
+
+ if (pipeline->state == state)
+ continue;
+
+ /* first set the pipeline to PAUSED state */
+ if (pipeline->state != SOF_IPC4_PIPE_PAUSED) {
+ ret = sof_ipc4_set_pipeline_state(sdev, swidget->pipeline_id,
+ SOF_IPC4_PIPE_PAUSED);
+ if (ret < 0) {
+ dev_err(sdev->dev, "failed to pause pipeline %d\n",
+ swidget->pipeline_id);
+ return ret;
+ }
+ }
+
+ pipeline->state = SOF_IPC4_PIPE_PAUSED;
+
+ if (pipeline->state == state)
+ continue;
+
+ /* then set the final state */
+ ret = sof_ipc4_set_pipeline_state(sdev, swidget->pipeline_id, state);
+ if (ret < 0) {
+ dev_err(sdev->dev, "failed to set state %d for pipeline %d\n",
+ state, swidget->pipeline_id);
+ break;
+ }
+
+ pipeline->state = state;
+ }
+
+ return ret;
+}
+
+static int sof_ipc4_pcm_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
+{
+ int state;
+
+ /* determine the pipeline state */
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ state = SOF_IPC4_PIPE_PAUSED;
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_START:
+ state = SOF_IPC4_PIPE_RUNNING;
+ break;
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_STOP:
+ state = SOF_IPC4_PIPE_PAUSED;
+ break;
+ default:
+ dev_err(component->dev, "%s: unhandled trigger cmd %d\n", __func__, cmd);
+ return -EINVAL;
+ }
+
+ /* set the pipeline state */
+ return sof_ipc4_trigger_pipelines(component, substream, state);
+}
+
+static int sof_ipc4_pcm_hw_free(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ return sof_ipc4_trigger_pipelines(component, substream, SOF_IPC4_PIPE_RESET);
+}
+
+static void ipc4_ssp_dai_config_pcm_params_match(struct snd_sof_dev *sdev, const char *link_name,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_sof_dai_link *slink;
+ struct snd_sof_dai *dai;
+ bool dai_link_found = false;
+ int i;
+
+ list_for_each_entry(slink, &sdev->dai_link_list, list) {
+ if (!strcmp(slink->link->name, link_name)) {
+ dai_link_found = true;
+ break;
+ }
+ }
+
+ if (!dai_link_found)
+ return;
+
+ for (i = 0; i < slink->num_hw_configs; i++) {
+ struct snd_soc_tplg_hw_config *hw_config = &slink->hw_configs[i];
+
+ if (params_rate(params) == le32_to_cpu(hw_config->fsync_rate)) {
+ /* set current config for all DAI's with matching name */
+ list_for_each_entry(dai, &sdev->dai_list, list)
+ if (!strcmp(slink->link->name, dai->name))
+ dai->current_config = le32_to_cpu(hw_config->id);
+ break;
+ }
+ }
+}
+
+static int sof_ipc4_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ 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, rtd->dai_link->name);
+ struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+ struct sof_ipc4_copier *ipc4_copier;
+ struct snd_soc_dpcm *dpcm;
+
+ if (!dai) {
+ dev_err(component->dev, "%s: No DAI found with name %s\n", __func__,
+ rtd->dai_link->name);
+ return -EINVAL;
+ }
+
+ ipc4_copier = dai->private;
+ if (!ipc4_copier) {
+ dev_err(component->dev, "%s: No private data found for DAI %s\n",
+ __func__, rtd->dai_link->name);
+ return -EINVAL;
+ }
+
+ /* always set BE format to 32-bits for both playback and capture */
+ snd_mask_none(fmt);
+ snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE);
+
+ /*
+ * Set trigger order for capture to SND_SOC_DPCM_TRIGGER_PRE. This is required
+ * to ensure that the BE DAI pipeline gets stopped/suspended before the FE DAI
+ * pipeline gets triggered and the pipeline widgets are freed.
+ */
+ for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_CAPTURE, dpcm) {
+ struct snd_soc_pcm_runtime *fe = dpcm->fe;
+
+ fe->dai_link->trigger[SNDRV_PCM_STREAM_CAPTURE] = SND_SOC_DPCM_TRIGGER_PRE;
+ }
+
+ switch (ipc4_copier->dai_type) {
+ case SOF_DAI_INTEL_SSP:
+ ipc4_ssp_dai_config_pcm_params_match(sdev, (char *)rtd->dai_link->name, params);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+const struct sof_ipc_pcm_ops ipc4_pcm_ops = {
+ .trigger = sof_ipc4_pcm_trigger,
+ .hw_free = sof_ipc4_pcm_hw_free,
+ .dai_link_fixup = sof_ipc4_pcm_dai_link_fixup,
+};
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