ASoC: Intel: sof_sdw_rt712_sdca: use helper to get codec dai by name

Use helper to get codec dai by name.
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20240208165545.93811-14-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_sdw_rt712_sdca.c

@@ -13,6 +13,7 @@
 #include <sound/soc.h>
 #include <sound/soc-acpi.h>
 #include <sound/soc-dapm.h>
+#include "sof_board_helpers.h"
 #include "sof_sdw_common.h"
 
 static const struct snd_soc_dapm_widget rt712_spk_widgets[] = {
@@ -77,12 +78,21 @@ int sof_sdw_rt712_spk_init(struct snd_soc_card *card,
 	return 0;
 }
 
+static const char * const dmics[] = {
+	"rt712-sdca-dmic"
+};
+
 static int rt712_sdca_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_card *card = rtd->card;
-	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
-	struct snd_soc_component *component = codec_dai->component;
+	struct snd_soc_dai *codec_dai;
+	struct snd_soc_component *component;
+
+	codec_dai = get_codec_dai_by_name(rtd, dmics, ARRAY_SIZE(dmics));
+	if (!codec_dai)
+		return -EINVAL;
 
+	component = codec_dai->component;
 	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 					  "%s mic:%s",
 					  card->components, component->name_prefix);
@@ -102,3 +112,4 @@ int sof_sdw_rt712_sdca_dmic_init(struct snd_soc_card *card,
 
 	return 0;
 }
+MODULE_IMPORT_NS(SND_SOC_INTEL_SOF_BOARD_HELPERS);