ASoC: SOF: topology: Make buffer widget parsing IPC agnostic

Define the list of tokens pertaining to the buffer widgets, parse and
save them as part of the swidget tuples array. Once topology parsing is
complete, these tokens will be applied to create the IPC structure for the
buffer component based on the topology widget_setup op in ipc3_tplg_ops.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220314200520.1233427-8-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 50 insertions, 52 deletions

diff --git a/sound/soc/sof/ipc3-topology.c b/sound/soc/sof/ipc3-topology.c
index 15299ffb7b15..e05d6b816fac 100644
--- a/sound/soc/sof/ipc3-topology.c
+++ b/sound/soc/sof/ipc3-topology.c
@@ -13,6 +13,14 @@
 #include "sof-audio.h"
 #include "ops.h"
 
+/* Buffers */
+static const struct sof_topology_token buffer_tokens[] = {
+	{SOF_TKN_BUF_SIZE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
+		offsetof(struct sof_ipc_buffer, size)},
+	{SOF_TKN_BUF_CAPS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
+		offsetof(struct sof_ipc_buffer, caps)},
+};
+
 /* scheduling */
 static const struct sof_topology_token sched_tokens[] = {
 	{SOF_TKN_SCHED_PERIOD, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
@@ -71,6 +79,7 @@ static const struct sof_token_info ipc3_token_list[SOF_TOKEN_COUNT] = {
 	[SOF_COMP_TOKENS] = {"Comp tokens", comp_tokens, ARRAY_SIZE(comp_tokens)},
 	[SOF_CORE_TOKENS] = {"Core tokens", core_tokens, ARRAY_SIZE(core_tokens)},
 	[SOF_COMP_EXT_TOKENS] = {"AFE tokens", comp_ext_tokens, ARRAY_SIZE(comp_ext_tokens)},
+	[SOF_BUFFER_TOKENS] = {"Buffer tokens", buffer_tokens, ARRAY_SIZE(buffer_tokens)},
 };
 
 /**
@@ -237,6 +246,41 @@ err:
 	return ret;
 }
 
+static int sof_ipc3_widget_setup_comp_buffer(struct snd_sof_widget *swidget)
+{
+	struct snd_soc_component *scomp = swidget->scomp;
+	struct sof_ipc_buffer *buffer;
+	int ret;
+
+	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	swidget->private = buffer;
+
+	/* configure dai IPC message */
+	buffer->comp.hdr.size = sizeof(*buffer);
+	buffer->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_BUFFER_NEW;
+	buffer->comp.id = swidget->comp_id;
+	buffer->comp.type = SOF_COMP_BUFFER;
+	buffer->comp.pipeline_id = swidget->pipeline_id;
+	buffer->comp.core = swidget->core;
+
+	/* parse one set of buffer tokens */
+	ret = sof_update_ipc_object(scomp, buffer, SOF_BUFFER_TOKENS, swidget->tuples,
+				    swidget->num_tuples, sizeof(*buffer), 1);
+	if (ret < 0) {
+		kfree(swidget->private);
+		swidget->private = NULL;
+		return ret;
+	}
+
+	dev_dbg(scomp->dev, "buffer %s: size %d caps 0x%x\n",
+		swidget->widget->name, buffer->size, buffer->caps);
+
+	return 0;
+}
+
 /* token list for each topology object */
 static enum sof_tokens host_token_list[] = {
 	SOF_CORE_TOKENS,
@@ -245,6 +289,10 @@ static enum sof_tokens host_token_list[] = {
 	SOF_COMP_TOKENS,
 };
 
+static enum sof_tokens buffer_token_list[] = {
+	SOF_BUFFER_TOKENS,
+};
+
 static enum sof_tokens pipeline_token_list[] = {
 	SOF_CORE_TOKENS,
 	SOF_COMP_EXT_TOKENS,
@@ -257,6 +305,8 @@ static const struct sof_ipc_tplg_widget_ops tplg_ipc3_widget_ops[SND_SOC_DAPM_TY
 				  host_token_list, ARRAY_SIZE(host_token_list), NULL},
 	[snd_soc_dapm_aif_out] = {sof_ipc3_widget_setup_comp_host, sof_ipc3_widget_free_comp,
 				  host_token_list, ARRAY_SIZE(host_token_list), NULL},
+	[snd_soc_dapm_buffer] = {sof_ipc3_widget_setup_comp_buffer, sof_ipc3_widget_free_comp,
+				 buffer_token_list, ARRAY_SIZE(buffer_token_list), NULL},
 	[snd_soc_dapm_scheduler] = {sof_ipc3_widget_setup_comp_pipeline, sof_ipc3_widget_free_comp,
 				    pipeline_token_list, ARRAY_SIZE(pipeline_token_list), NULL},
 };
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index 4dd4e98e87cf..88214ec2df5a 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -611,14 +611,6 @@ static int get_token_process_type(void *elem, void *object, u32 offset)
 	return 0;
 }
 
-/* Buffers */
-static const struct sof_topology_token buffer_tokens[] = {
-	{SOF_TKN_BUF_SIZE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
-		offsetof(struct sof_ipc_buffer, size)},
-	{SOF_TKN_BUF_CAPS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
-		offsetof(struct sof_ipc_buffer, caps)},
-};
-
 /* DAI */
 static const struct sof_topology_token dai_tokens[] = {
 	{SOF_TKN_DAI_TYPE, SND_SOC_TPLG_TUPLE_TYPE_STRING, get_token_dai_type,
@@ -1721,48 +1713,6 @@ free:
 	return ret;
 }
 
-/*
- * Buffer topology
- */
-
-static int sof_widget_load_buffer(struct snd_soc_component *scomp, int index,
-				  struct snd_sof_widget *swidget,
-				  struct snd_soc_tplg_dapm_widget *tw)
-{
-	struct snd_soc_tplg_private *private = &tw->priv;
-	struct sof_ipc_buffer *buffer;
-	int ret;
-
-	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
-	if (!buffer)
-		return -ENOMEM;
-
-	/* configure dai IPC message */
-	buffer->comp.hdr.size = sizeof(*buffer);
-	buffer->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_BUFFER_NEW;
-	buffer->comp.id = swidget->comp_id;
-	buffer->comp.type = SOF_COMP_BUFFER;
-	buffer->comp.pipeline_id = index;
-	buffer->comp.core = swidget->core;
-
-	ret = sof_parse_tokens(scomp, buffer, buffer_tokens,
-			       ARRAY_SIZE(buffer_tokens), private->array,
-			       le32_to_cpu(private->size));
-	if (ret != 0) {
-		dev_err(scomp->dev, "error: parse buffer tokens failed %d\n",
-			private->size);
-		kfree(buffer);
-		return ret;
-	}
-
-	dev_dbg(scomp->dev, "buffer %s: size %d caps 0x%x\n",
-		swidget->widget->name, buffer->size, buffer->caps);
-
-	swidget->private = buffer;
-
-	return 0;
-}
-
 /* bind PCM ID to host component ID */
 static int spcm_bind(struct snd_soc_component *scomp, struct snd_sof_pcm *spcm,
 		     int dir)
@@ -2479,8 +2429,6 @@ static int sof_widget_ready(struct snd_soc_component *scomp, int index,
 		ret = sof_widget_load_pga(scomp, index, swidget, tw);
 		break;
 	case snd_soc_dapm_buffer:
-		ret = sof_widget_load_buffer(scomp, index, swidget, tw);
-		break;
 	case snd_soc_dapm_scheduler:
 	case snd_soc_dapm_aif_out:
 	case snd_soc_dapm_aif_in: