1 files changed, 52 insertions, 0 deletions
diff --git a/sound/soc/codecs/wcd934x/wcd934x.c b/sound/soc/codecs/wcd934x/wcd934x.c
index 1bf43e650cac..145eee09cb73 100644
--- a/sound/soc/codecs/wcd934x/wcd934x.c
+++ b/sound/soc/codecs/wcd934x/wcd934x.c
@@ -3534,6 +3534,58 @@ static int __tavil_codec_enable_micbias(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
+/*
+ * tavil_codec_enable_standalone_micbias - enable micbias standalone
+ * @codec: pointer to codec instance
+ * @micb_num: number of micbias to be enabled
+ * @enable: true to enable micbias or false to disable
+ *
+ * This function is used to enable micbias (1, 2, 3 or 4) during
+ * standalone independent of whether TX use-case is running or not
+ *
+ * Return: error code in case of failure or 0 for success
+ */
+int tavil_codec_enable_standalone_micbias(struct snd_soc_codec *codec,
+					  int micb_num,
+					  bool enable)
+{
+	const char * const micb_names[] = {
+		DAPM_MICBIAS1_STANDALONE, DAPM_MICBIAS2_STANDALONE,
+		DAPM_MICBIAS3_STANDALONE, DAPM_MICBIAS4_STANDALONE
+	};
+	int micb_index = micb_num - 1;
+	int rc;
+
+	if (!codec) {
+		pr_err("%s: Codec memory is NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	if ((micb_index < 0) || (micb_index > TAVIL_MAX_MICBIAS - 1)) {
+		dev_err(codec->dev, "%s: Invalid micbias index, micb_ind:%d\n",
+			__func__, micb_index);
+		return -EINVAL;
+	}
+
+	if (enable)
+		rc = snd_soc_dapm_force_enable_pin_unlocked(
+						snd_soc_codec_get_dapm(codec),
+						micb_names[micb_index]);
+	else
+		rc = snd_soc_dapm_disable_pin_unlocked(
+						snd_soc_codec_get_dapm(codec),
+						micb_names[micb_index]);
+
+	if (!rc)
+		snd_soc_dapm_sync(snd_soc_codec_get_dapm(codec));
+	else
+		dev_err(codec->dev, "%s: micbias%d force %s pin failed\n",
+			__func__, micb_num, (enable ? "enable" : "disable"));
+
+	return rc;
+}
+EXPORT_SYMBOL(tavil_codec_enable_standalone_micbias);
+
 static int tavil_codec_force_enable_micbias(struct snd_soc_dapm_widget *w,
 					    struct snd_kcontrol *kcontrol,
 					    int event)