ASoC: SOF: topology: make sof_route_load() IPC agnostic

The IPC structure can be set up using the fields in struct snd_sof_route
when the pipeline connections are established.
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/20220308164344.577647-13-ranjani.sridharan@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-audio.c

@@ -259,28 +259,25 @@ EXPORT_SYMBOL(sof_widget_setup);
 
 static int sof_route_setup_ipc(struct snd_sof_dev *sdev, struct snd_sof_route *sroute)
 {
-	struct sof_ipc_pipe_comp_connect *connect;
+	struct sof_ipc_pipe_comp_connect connect;
 	struct sof_ipc_reply reply;
 	int ret;
 
-	/* skip if there's no private data */
-	if (!sroute->private)
-		return 0;
-
 	/* nothing to do if route is already set up */
 	if (sroute->setup)
 		return 0;
 
-	connect = sroute->private;
+	connect.hdr.size = sizeof(connect);
+	connect.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_CONNECT;
+	connect.source_id = sroute->src_widget->comp_id;
+	connect.sink_id = sroute->sink_widget->comp_id;
 
 	dev_dbg(sdev->dev, "setting up route %s -> %s\n",
 		sroute->src_widget->widget->name,
 		sroute->sink_widget->widget->name);
 
 	/* send ipc */
-	ret = sof_ipc_tx_message(sdev->ipc,
-				 connect->hdr.cmd,
-				 connect, sizeof(*connect),
+	ret = sof_ipc_tx_message(sdev->ipc, connect.hdr.cmd, &connect, sizeof(connect),
 				 &reply, sizeof(reply));
 	if (ret < 0) {
 		dev_err(sdev->dev, "%s: route setup failed %d\n", __func__, ret);

sound/soc/sof/topology.c

@@ -3322,7 +3322,6 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 			  struct snd_soc_dapm_route *route)
 {
 	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
-	struct sof_ipc_pipe_comp_connect *connect;
 	struct snd_sof_widget *source_swidget, *sink_swidget;
 	struct snd_soc_dobj *dobj = &route->dobj;
 	struct snd_sof_route *sroute;
@@ -3334,16 +3333,6 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 		return -ENOMEM;
 
 	sroute->scomp = scomp;
-
-	connect = kzalloc(sizeof(*connect), GFP_KERNEL);
-	if (!connect) {
-		kfree(sroute);
-		return -ENOMEM;
-	}
-
-	connect->hdr.size = sizeof(*connect);
-	connect->hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_CONNECT;
-
 	dev_dbg(scomp->dev, "sink %s control %s source %s\n",
 		route->sink, route->control ? route->control : "none",
 		route->source);
@@ -3367,8 +3356,6 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 	    source_swidget->id == snd_soc_dapm_output)
 		goto err;
 
-	connect->source_id = source_swidget->comp_id;
-
 	/* sink component */
 	sink_swidget = snd_sof_find_swidget(scomp, (char *)route->sink);
 	if (!sink_swidget) {
@@ -3386,8 +3373,6 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 	    sink_swidget->id == snd_soc_dapm_output)
 		goto err;
 
-	connect->sink_id = sink_swidget->comp_id;
-
 	/*
 	 * For virtual routes, both sink and source are not
 	 * buffer. Since only buffer linked to component is supported by
@@ -3402,7 +3387,6 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 	} else {
 		sroute->route = route;
 		dobj->private = sroute;
-		sroute->private = connect;
 		sroute->src_widget = source_swidget;
 		sroute->sink_widget = sink_swidget;
 
@@ -3413,7 +3397,6 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 	}
 
 err:
-	kfree(connect);
 	kfree(sroute);
 	return ret;
 }