ASoC: SOF: IPC4: Introduce topology ops

Introduce the topology ops for IPC4. Set the widget_ops and token_list
for parsing the scheduler type widget. Support for other widget types
will be added in the follow up patches.

Co-developed-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Co-developed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Link: https://lore.kernel.org/r/20220609032643.916882-3-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/Makefile

@@ -4,7 +4,7 @@ snd-sof-objs := core.o ops.o loader.o ipc.o pcm.o pm.o debug.o topology.o\
 		control.o trace.o iomem-utils.o sof-audio.o stream-ipc.o\
 		ipc3-topology.o ipc3-control.o ipc3.o ipc3-pcm.o ipc3-loader.o\
 		ipc3-dtrace.o\
-		ipc4.o ipc4-loader.o
+		ipc4.o ipc4-loader.o ipc4-topology.o
 ifneq ($(CONFIG_SND_SOC_SOF_CLIENT),)
 snd-sof-objs += sof-client.o
 endif

sound/soc/sof/ipc4-priv.h

@@ -40,5 +40,6 @@ struct sof_ipc4_fw_module {
 };
 
 extern const struct sof_ipc_fw_loader_ops ipc4_loader_ops;
+extern const struct sof_ipc_tplg_ops ipc4_tplg_ops;
 
 #endif

sound/soc/sof/ipc4-topology.c

@@ -0,0 +1,102 @@
+// 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 <uapi/sound/sof/tokens.h>
+#include <sound/pcm_params.h>
+#include <sound/sof/ext_manifest4.h>
+#include "sof-priv.h"
+#include "sof-audio.h"
+#include "ipc4-priv.h"
+#include "ipc4-topology.h"
+#include "ops.h"
+
+static const struct sof_topology_token ipc4_sched_tokens[] = {
+	{SOF_TKN_SCHED_LP_MODE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
+		offsetof(struct sof_ipc4_pipeline, lp_mode)}
+};
+
+static const struct sof_topology_token pipeline_tokens[] = {
+	{SOF_TKN_SCHED_DYNAMIC_PIPELINE, SND_SOC_TPLG_TUPLE_TYPE_BOOL, get_token_u16,
+		offsetof(struct snd_sof_widget, dynamic_pipeline_widget)},
+};
+
+static const struct sof_token_info ipc4_token_list[SOF_TOKEN_COUNT] = {
+	[SOF_PIPELINE_TOKENS] = {"Pipeline tokens", pipeline_tokens, ARRAY_SIZE(pipeline_tokens)},
+	[SOF_SCHED_TOKENS] = {"Scheduler tokens", ipc4_sched_tokens,
+		ARRAY_SIZE(ipc4_sched_tokens)},
+};
+
+static void sof_ipc4_widget_free_comp(struct snd_sof_widget *swidget)
+{
+	kfree(swidget->private);
+}
+
+static int sof_ipc4_widget_setup_comp_pipeline(struct snd_sof_widget *swidget)
+{
+	struct snd_soc_component *scomp = swidget->scomp;
+	struct sof_ipc4_pipeline *pipeline;
+	int ret;
+
+	pipeline = kzalloc(sizeof(*pipeline), GFP_KERNEL);
+	if (!pipeline)
+		return -ENOMEM;
+
+	ret = sof_update_ipc_object(scomp, pipeline, SOF_SCHED_TOKENS, swidget->tuples,
+				    swidget->num_tuples, sizeof(*pipeline), 1);
+	if (ret) {
+		dev_err(scomp->dev, "parsing scheduler tokens failed\n");
+		goto err;
+	}
+
+	/* parse one set of pipeline tokens */
+	ret = sof_update_ipc_object(scomp, swidget, SOF_PIPELINE_TOKENS, swidget->tuples,
+				    swidget->num_tuples, sizeof(*swidget), 1);
+	if (ret) {
+		dev_err(scomp->dev, "parsing pipeline tokens failed\n");
+		goto err;
+	}
+
+	/* TODO: Get priority from topology */
+	pipeline->priority = 0;
+
+	dev_dbg(scomp->dev, "pipeline '%s': id %d pri %d lp mode %d\n",
+		swidget->widget->name, swidget->pipeline_id,
+		pipeline->priority, pipeline->lp_mode);
+
+	swidget->private = pipeline;
+
+	pipeline->msg.primary = SOF_IPC4_GLB_PIPE_PRIORITY(pipeline->priority);
+	pipeline->msg.primary |= SOF_IPC4_GLB_PIPE_INSTANCE_ID(swidget->pipeline_id);
+	pipeline->msg.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_GLB_CREATE_PIPELINE);
+	pipeline->msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+	pipeline->msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_FW_GEN_MSG);
+
+	pipeline->msg.extension = pipeline->lp_mode;
+	pipeline->state = SOF_IPC4_PIPE_UNINITIALIZED;
+
+	return 0;
+err:
+	kfree(pipeline);
+	return ret;
+}
+
+static enum sof_tokens pipeline_token_list[] = {
+	SOF_SCHED_TOKENS,
+	SOF_PIPELINE_TOKENS,
+};
+
+static const struct sof_ipc_tplg_widget_ops tplg_ipc4_widget_ops[SND_SOC_DAPM_TYPE_COUNT] = {
+	[snd_soc_dapm_scheduler] = {sof_ipc4_widget_setup_comp_pipeline, sof_ipc4_widget_free_comp,
+				    pipeline_token_list, ARRAY_SIZE(pipeline_token_list), NULL,
+				    NULL, NULL},
+};
+
+const struct sof_ipc_tplg_ops ipc4_tplg_ops = {
+	.widget = tplg_ipc4_widget_ops,
+	.token_list = ipc4_token_list,
+};

sound/soc/sof/ipc4-topology.h

@@ -0,0 +1,30 @@
+/* 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.
+ */
+
+#ifndef __INCLUDE_SOUND_SOF_IPC4_TOPOLOGY_H__
+#define __INCLUDE_SOUND_SOF_IPC4_TOPOLOGY_H__
+
+#include <sound/sof/ipc4/header.h>
+
+/**
+ * struct sof_ipc4_pipeline - pipeline config data
+ * @priority: Priority of this pipeline
+ * @lp_mode: Low power mode
+ * @mem_usage: Memory usage
+ * @state: Pipeline state
+ * @msg: message structure for pipeline
+ */
+struct sof_ipc4_pipeline {
+	uint32_t priority;
+	uint32_t lp_mode;
+	uint32_t mem_usage;
+	int state;
+	struct sof_ipc4_msg msg;
+};
+
+#endif

sound/soc/sof/ipc4.c

@@ -603,4 +603,5 @@ const struct sof_ipc_ops ipc4_ops = {
 	.set_get_data = sof_ipc4_set_get_data,
 	.get_reply = sof_ipc4_get_reply,
 	.fw_loader = &ipc4_loader_ops,
+	.tplg = &ipc4_tplg_ops,
 };