ASoC: sdw_utils: generate combined spk components string

The suggestion from UCM for 2 speaker components is using 1 "spk" tag
with 2 component names. Like "spk:rt722+rt1320". The commit removes the
creation of the "spk" components in each rtd_init callback and creat the
string in asoc_sdw_rtd_init().

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20250625140430.311865-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: bardliao

sound/soc/sdw_utils/soc_sdw_cs_amp.c

@@ -14,7 +14,6 @@
 #include <sound/soc-dai.h>
 #include <sound/soc_sdw_utils.h>
 
-#define CODEC_NAME_SIZE	8
 #define CS_AMP_CHANNELS_PER_AMP	4
 #define CS35L56_SPK_VOLUME_0DB 400 /* 0dB Max */
 
@@ -38,21 +37,12 @@ EXPORT_SYMBOL_NS(asoc_sdw_cs35l56_volume_limit, "SND_SOC_SDW_UTILS");
 
 int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
 {
-	const char *dai_name = rtd->dai_link->codecs->dai_name;
 	struct snd_soc_card *card = rtd->card;
-	char codec_name[CODEC_NAME_SIZE];
 	char widget_name[16];
 	struct snd_soc_dapm_route route = { "Speaker", NULL, widget_name };
 	struct snd_soc_dai *codec_dai;
 	int i, ret;
 
-	snprintf(codec_name, CODEC_NAME_SIZE, "%s", dai_name);
-	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
-					  "%s spk:%s",
-					  card->components, codec_name);
-	if (!card->components)
-		return -ENOMEM;
-
 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
 		if (!strstr(codec_dai->name, "cs35l56"))
 			continue;

sound/soc/sdw_utils/soc_sdw_maxim.c

@@ -28,15 +28,6 @@ int asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_
 	struct snd_soc_card *card = rtd->card;
 	int ret;
 
-	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
-					  "%s spk:mx%04x",
-					  card->components, maxim_part_id);
-	if (!card->components)
-		return -ENOMEM;
-
-	dev_dbg(card->dev, "soundwire maxim card components assigned : %s\n",
-		card->components);
-
 	ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
 	if (ret)
 		dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);

sound/soc/sdw_utils/soc_sdw_rt_amp.c

@@ -195,12 +195,6 @@ int asoc_sdw_rt_amp_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc
 
 	rt_amp_map = get_codec_name_and_route(dai, codec_name);
 
-	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
-					  "%s spk:%s",
-					  card->components, codec_name);
-	if (!card->components)
-		return -ENOMEM;
-
 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
 		if (strstr(codec_dai->component->name_prefix, "-1"))
 			ret = snd_soc_dapm_add_routes(&card->dapm, rt_amp_map, 2);

sound/soc/sdw_utils/soc_sdw_rt_mf_sdca.c

@@ -73,13 +73,6 @@ int asoc_sdw_rt_mf_sdca_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd
 		return -EINVAL;
 	}
 
-	/* Update card components */
-	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
-					  "%s spk:%s",
-					  card->components, codec_name);
-	if (!card->components)
-		return -ENOMEM;
-
 	/* Add routes */
 	ret = snd_soc_dapm_add_routes(&card->dapm, route_map->route_map, route_map->route_size);
 	if (ret)

sound/soc/sdw_utils/soc_sdw_utils.c

@@ -740,6 +740,7 @@ int asoc_sdw_rtd_init(struct snd_soc_pcm_runtime *rtd)
 	struct snd_soc_card *card = rtd->card;
 	struct asoc_sdw_codec_info *codec_info;
 	struct snd_soc_dai *dai;
+	const char *spk_components="";
 	int dai_index;
 	int ret;
 	int i;
@@ -792,7 +793,32 @@ int asoc_sdw_rtd_init(struct snd_soc_pcm_runtime *rtd)
 			if (ret)
 				return ret;
 		}
+
+		/* Generate the spk component string for card->components string */
+		if (codec_info->dais[dai_index].dai_type == SOC_SDW_DAI_TYPE_AMP &&
+		    codec_info->dais[dai_index].component_name) {
+			if (strlen (spk_components) == 0)
+				spk_components =
+					devm_kasprintf(card->dev, GFP_KERNEL, "%s",
+						       codec_info->dais[dai_index].component_name);
+			else
+				/* Append component name to spk_components */
+				spk_components =
+					devm_kasprintf(card->dev, GFP_KERNEL,
+						       "%s+%s", spk_components,
+						       codec_info->dais[dai_index].component_name);
+		}
+
 		codec_info->dais[dai_index].rtd_init_done = true;
+
+	}
+
+	if (strlen (spk_components) > 0) {
+		/* Update card components for speaker components */
+		card->components = devm_kasprintf(card->dev, GFP_KERNEL, "%s spk:%s",
+						  card->components, spk_components);
+		if (!card->components)
+			return -ENOMEM;
 	}
 
 	return 0;