ASoC: soc_sdw_utils: skip the endpoint that doesn't present

A codec endpoint may not be used. We could check the present SDCA
functions to know if the endpoint is used or not. Skip the endpoint
which is not used.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>

sound/soc/sdw_utils/soc_sdw_utils.c

@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/soundwire/sdw.h>
 #include <linux/soundwire/sdw_type.h>
+#include <sound/sdca_function.h>
 #include <sound/soc_sdw_utils.h>
 
 static const struct snd_soc_dapm_widget generic_dmic_widgets[] = {
@@ -1062,8 +1063,10 @@ int asoc_sdw_parse_sdw_endpoints(struct snd_soc_card *card,
 	struct snd_soc_acpi_mach_params *mach_params = &mach->mach_params;
 	const struct snd_soc_acpi_link_adr *adr_link;
 	struct asoc_sdw_endpoint *soc_end = soc_ends;
+	struct snd_soc_dai_link_component dlc;
+	struct snd_soc_dai *codec_dai;
 	int num_dais = 0;
-	int i, j;
+	int i, j, k;
 	int ret;
 
 	for (adr_link = mach_params->links; adr_link->num_adr; adr_link++) {
@@ -1096,6 +1099,7 @@ int asoc_sdw_parse_sdw_endpoints(struct snd_soc_card *card,
 			if (!codec_name)
 				return -ENOMEM;
 
+			dlc.name = codec_name;
 			dev_dbg(dev, "Adding prefix %s for %s\n",
 				adr_dev->name_prefix, codec_name);
 
@@ -1113,7 +1117,9 @@ int asoc_sdw_parse_sdw_endpoints(struct snd_soc_card *card,
 				const struct snd_soc_acpi_endpoint *adr_end;
 				const struct asoc_sdw_dai_info *dai_info;
 				struct asoc_sdw_dailink *soc_dai;
+				struct sdw_slave *slave;
 				int stream;
+				char *key;
 
 				adr_end = &adr_dev->endpoints[j];
 				dai_info = &codec_info->dais[adr_end->num];
@@ -1122,6 +1128,47 @@ int asoc_sdw_parse_sdw_endpoints(struct snd_soc_card *card,
 				if (dai_info->quirk && !(dai_info->quirk & ctx->mc_quirk))
 					continue;
 
+				dlc.dai_name = dai_info->dai_name;
+				codec_dai = snd_soc_find_dai_with_mutex(&dlc);
+				if (!codec_dai) {
+					dev_err(dev, "codec dai %s not registered yet\n",
+						dlc.dai_name);
+					return -EAGAIN;
+				}
+
+				slave = dev_to_sdw_dev(codec_dai->dev);
+				if (!slave)
+					return -EINVAL;
+
+				switch (dai_info->dai_type) {
+				case SOC_SDW_DAI_TYPE_JACK:
+					key = "J"; /* UAJ, RJ, SimpleJack*/
+					break;
+				case SOC_SDW_DAI_TYPE_AMP:
+					key = "Amp"; /* SmartAmp, SimpleAmp*/
+					break;
+				case SOC_SDW_DAI_TYPE_MIC:
+					key = "Mic"; /* SmartMic, SimpleMic, SpeakerMic*/
+					break;
+				default:
+					dev_err(dev, "Invalid dai type %d\n",
+						dai_info->dai_type);
+					return -EINVAL;
+				}
+				for (k = 0; k < slave->sdca_data.num_functions; k++) {
+					dev_dbg(&slave->dev, "function: %s key %s\n", slave->sdca_data.sdca_func[k].name, key);
+					if (strstr(slave->sdca_data.sdca_func[k].name, key)) {
+						dev_dbg(&slave->dev, "Function %s found\n",
+							slave->sdca_data.sdca_func[k].name);
+						break;
+					}
+				}
+				if (k == slave->sdca_data.num_functions) {
+					dev_dbg(&slave->dev, "DAI type %d not found, skip endpoint\n",
+						dai_info->dai_type);
+					continue;
+				}
+
 				dev_dbg(dev,
 					"Add dev: %d, 0x%llx end: %d, dai: %d, %c/%c to %s: %d\n",
 					ffs(adr_link->mask) - 1, adr_dev->adr,