ASoC: rt286: Fix capture volume setting issue

The purpose of rt286_adc_event is to mute/numnte the ADC mixer.
However, it will also set the capture volume to default value.
As a result, "ADC0 Capture Volume" is not working if it is set
before capture start. This patch remove rt286_adc_event and add
"ADC0 Capture Switch" to mute/unmute ADC mixer.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt286.c

@@ -417,6 +417,8 @@ static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
 static const struct snd_kcontrol_new rt286_snd_controls[] = {
 	SOC_DOUBLE_R_TLV("DAC0 Playback Volume", RT286_DACL_GAIN,
 			    RT286_DACR_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_DOUBLE_R("ADC0 Capture Switch", RT286_ADCL_GAIN,
+			    RT286_ADCR_GAIN, 7, 1, 1),
 	SOC_DOUBLE_R_TLV("ADC0 Capture Volume", RT286_ADCL_GAIN,
 			    RT286_ADCR_GAIN, 0, 0x7f, 0, out_vol_tlv),
 	SOC_SINGLE_TLV("AMIC Volume", RT286_MIC_GAIN,
@@ -538,32 +540,6 @@ static int rt286_set_dmic1_event(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
-static int rt286_adc_event(struct snd_soc_dapm_widget *w,
-			     struct snd_kcontrol *kcontrol, int event)
-{
-	struct snd_soc_codec *codec = w->codec;
-	unsigned int nid;
-
-	nid = (w->reg >> 20) & 0xff;
-
-	switch (event) {
-	case SND_SOC_DAPM_POST_PMU:
-		snd_soc_update_bits(codec,
-			VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
-			0x7080, 0x7000);
-		break;
-	case SND_SOC_DAPM_PRE_PMD:
-		snd_soc_update_bits(codec,
-			VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
-			0x7080, 0x7080);
-		break;
-	default:
-		return 0;
-	}
-
-	return 0;
-}
-
 static int rt286_vref_event(struct snd_soc_dapm_widget *w,
 			     struct snd_kcontrol *kcontrol, int event)
 {
@@ -667,12 +643,10 @@ static const struct snd_soc_dapm_widget rt286_dapm_widgets[] = {
 	SND_SOC_DAPM_ADC("ADC 1", NULL, SND_SOC_NOPM, 0, 0),
 
 	/* ADC Mux */
-	SND_SOC_DAPM_MUX_E("ADC 0 Mux", RT286_SET_POWER(RT286_ADC_IN1), 0, 1,
-		&rt286_adc0_mux, rt286_adc_event, SND_SOC_DAPM_PRE_PMD |
-		SND_SOC_DAPM_POST_PMU),
-	SND_SOC_DAPM_MUX_E("ADC 1 Mux", RT286_SET_POWER(RT286_ADC_IN2), 0, 1,
-		&rt286_adc1_mux, rt286_adc_event, SND_SOC_DAPM_PRE_PMD |
-		SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_MUX("ADC 0 Mux", RT286_SET_POWER(RT286_ADC_IN1), 0, 1,
+		&rt286_adc0_mux),
+	SND_SOC_DAPM_MUX("ADC 1 Mux", RT286_SET_POWER(RT286_ADC_IN2), 0, 1,
+		&rt286_adc1_mux),
 
 	/* Audio Interface */
 	SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),