diff --git a/sound/soc/codecs/rk3308_codec.c b/sound/soc/codecs/rk3308_codec.c
index 95b1bcbba404..e0caf94ff451 100644
--- a/sound/soc/codecs/rk3308_codec.c
+++ b/sound/soc/codecs/rk3308_codec.c
@@ -681,6 +681,12 @@ static const struct snd_kcontrol_new rk3308_codec_dapm_controls[] = {
 	SOC_ENUM_EXT("AGC Group 3 Right Approximate Sample Rate", rk3308_agc_asr_enum_array[7],
 		     rk3308_codec_agc_asr_get, rk3308_codec_agc_asr_put),
 
+	/* ADC MICBIAS1 and MICBIAS2 Switch */
+	SOC_SINGLE("ADC MICBIAS1", RK3308_ADC_ANA_CON07(1),
+		   RK3308_ADC_MIC_BIAS_BUF_SFT, 1, 0),
+	SOC_SINGLE("ADC MICBIAS2", RK3308_ADC_ANA_CON07(2),
+		   RK3308_ADC_MIC_BIAS_BUF_SFT, 1, 0),
+
 	/* ADC MIC Mute/Work Switch */
 	SOC_ENUM_EXT("ADC MIC Group 0 Left Switch", rk3308_mic_mute_enum_array[0],
 		     rk3308_codec_mic_mute_get, rk3308_codec_mic_mute_put),
diff --git a/sound/soc/codecs/rk3308_codec.h b/sound/soc/codecs/rk3308_codec.h
index 8b1b9646a690..1ac874251641 100644
--- a/sound/soc/codecs/rk3308_codec.h
+++ b/sound/soc/codecs/rk3308_codec.h
@@ -793,8 +793,9 @@
 #define RK3308_ADC_CH1_IN_MIC			(0x1 << RK3308_ADC_CH1_IN_SEL_SFT)
 #define RK3308_ADC_CH1_IN_NONE			(0x0 << RK3308_ADC_CH1_IN_SEL_SFT)
 
-#define RK3308_ADC_MIC_BIAS_BUF_EN		(0x1 << 3)
-#define RK3308_ADC_MIC_BIAS_BUF_DIS		(0x0 << 3)
+#define RK3308_ADC_MIC_BIAS_BUF_SFT		3
+#define RK3308_ADC_MIC_BIAS_BUF_EN		(0x1 << RK3308_ADC_MIC_BIAS_BUF_SFT)
+#define RK3308_ADC_MIC_BIAS_BUF_DIS		(0x0 << RK3308_ADC_MIC_BIAS_BUF_SFT)
 #define RK3308_ADC_LEVEL_RANGE_MICBIAS_SFT	0
 #define RK3308_ADC_LEVEL_RANGE_MICBIAS_MSK	(0x7 << RK3308_ADC_LEVEL_RANGE_MICBIAS_SFT)
 #define RK3308_ADC_MICBIAS_VOLT_0_85		(0x7 << RK3308_ADC_LEVEL_RANGE_MICBIAS_SFT)