ASoC: Intel: sof_sdw: Delay update of the codec_conf array

Move the population of the codec_conf array from endpoint parsing
time to link creation time. This is slightly cleaner as the
population is done whilst the DAI links are also being populated,
putting all population together. However, primarily this facilitates
allowing additional non-SoundWire devices to be easily added into
the array in future feature additions.
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20240426152123.36284-11-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_sdw.c

@@ -1279,6 +1279,7 @@ struct sof_sdw_endpoint {
 
 	u32 link_mask;
 	const char *codec_name;
+	const char *name_prefix;
 
 	struct sof_sdw_codec_info *codec_info;
 	const struct sof_sdw_dai_info *dai_info;
@@ -1340,7 +1341,6 @@ static int parse_sdw_endpoints(struct snd_soc_card *card,
 	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
 	struct snd_soc_acpi_mach *mach = dev_get_platdata(dev);
 	struct snd_soc_acpi_mach_params *mach_params = &mach->mach_params;
-	struct snd_soc_codec_conf *codec_conf = card->codec_conf;
 	const struct snd_soc_acpi_link_adr *adr_link;
 	struct sof_sdw_endpoint *sof_end = sof_ends;
 	int num_dais = 0;
@@ -1376,13 +1376,11 @@ static int parse_sdw_endpoints(struct snd_soc_card *card,
 			if (!codec_name)
 				return -ENOMEM;
 
-			codec_conf->dlc.name = codec_name;
-			codec_conf->name_prefix = adr_dev->name_prefix;
-			codec_conf++;
-
 			dev_dbg(dev, "Adding prefix %s for %s\n",
 				adr_dev->name_prefix, codec_name);
 
+			sof_end->name_prefix = adr_dev->name_prefix;
+
 			for (j = 0; j < adr_dev->num_endpoints; j++) {
 				const struct snd_soc_acpi_endpoint *adr_end;
 				const struct sof_sdw_dai_info *dai_info;
@@ -1443,21 +1441,27 @@ static int parse_sdw_endpoints(struct snd_soc_card *card,
 		ctx->append_dai_type |= (num_link_dailinks > 1);
 	}
 
-	WARN_ON(codec_conf != card->codec_conf + card->num_configs);
-
 	return num_dais;
 }
 
 static int create_sdw_dailink(struct snd_soc_card *card,
 			      struct sof_sdw_dailink *sof_dai,
 			      struct snd_soc_dai_link **dai_links,
-			      int *be_id)
+			      int *be_id, struct snd_soc_codec_conf **codec_conf)
 {
 	struct device *dev = card->dev;
 	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
 	struct sof_sdw_endpoint *sof_end;
 	int stream;
 
+	list_for_each_entry(sof_end, &sof_dai->endpoints, list) {
+		if (sof_end->name_prefix) {
+			(*codec_conf)->dlc.name = sof_end->codec_name;
+			(*codec_conf)->name_prefix = sof_end->name_prefix;
+			(*codec_conf)++;
+		}
+	}
+
 	for_each_pcm_streams(stream) {
 		static const char * const sdw_stream_name[] = {
 			"SDW%d-Playback",
@@ -1569,7 +1573,8 @@ static int create_sdw_dailink(struct snd_soc_card *card,
 
 static int create_sdw_dailinks(struct snd_soc_card *card,
 			       struct snd_soc_dai_link **dai_links, int *be_id,
-			       struct sof_sdw_dailink *sof_dais)
+			       struct sof_sdw_dailink *sof_dais,
+			       struct snd_soc_codec_conf **codec_conf)
 {
 	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
 	int ret, i;
@@ -1581,7 +1586,8 @@ static int create_sdw_dailinks(struct snd_soc_card *card,
 	while (sof_dais->initialised) {
 		int current_be_id;
 
-		ret = create_sdw_dailink(card, sof_dais, dai_links, &current_be_id);
+		ret = create_sdw_dailink(card, sof_dais, dai_links,
+					 &current_be_id, codec_conf);
 		if (ret)
 			return ret;
 
@@ -1751,16 +1757,6 @@ static int sof_card_dai_links_create(struct snd_soc_card *card)
 		goto err_dai;
 	}
 
-	/* will be populated when acpi endpoints are parsed */
-	codec_conf = devm_kcalloc(dev, num_devs, sizeof(*codec_conf), GFP_KERNEL);
-	if (!codec_conf) {
-		ret = -ENOMEM;
-		goto err_end;
-	}
-
-	card->codec_conf = codec_conf;
-	card->num_configs = num_devs;
-
 	ret = parse_sdw_endpoints(card, sof_dais, sof_ends);
 	if (ret < 0)
 		goto err_end;
@@ -1798,6 +1794,12 @@ static int sof_card_dai_links_create(struct snd_soc_card *card)
 		sdw_be_num, ssp_num, dmic_num,
 		ctx->hdmi.idisp_codec ? hdmi_num : 0, bt_num);
 
+	codec_conf = devm_kcalloc(dev, num_devs, sizeof(*codec_conf), GFP_KERNEL);
+	if (!codec_conf) {
+		ret = -ENOMEM;
+		goto err_end;
+	}
+
 	/* allocate BE dailinks */
 	num_links = sdw_be_num + ssp_num + dmic_num + hdmi_num + bt_num;
 	dai_links = devm_kcalloc(dev, num_links, sizeof(*dai_links), GFP_KERNEL);
@@ -1806,12 +1808,15 @@ static int sof_card_dai_links_create(struct snd_soc_card *card)
 		goto err_end;
 	}
 
+	card->codec_conf = codec_conf;
+	card->num_configs = num_devs;
 	card->dai_link = dai_links;
 	card->num_links = num_links;
 
 	/* SDW */
 	if (sdw_be_num) {
-		ret = create_sdw_dailinks(card, &dai_links, &be_id, sof_dais);
+		ret = create_sdw_dailinks(card, &dai_links, &be_id,
+					  sof_dais, &codec_conf);
 		if (ret)
 			goto err_end;
 	}
@@ -1847,6 +1852,7 @@ static int sof_card_dai_links_create(struct snd_soc_card *card)
 			goto err_end;
 	}
 
+	WARN_ON(codec_conf != card->codec_conf + card->num_configs);
 	WARN_ON(dai_links != card->dai_link + card->num_links);
 
 err_end: