ASoC: rt5682: Fix the vol+ button detection issue

Fix the wrong button vol+ detection issue with some brand headsets
by fine tuning the threshold of button vol+ and SAR ADC button accuracy.
Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/20210825040346.28346-1-derek.fang@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5682.c

@@ -43,7 +43,9 @@ static const struct reg_sequence patch_list[] = {
 	{RT5682_DAC_ADC_DIG_VOL1, 0xa020},
 	{RT5682_I2C_CTRL, 0x000f},
 	{RT5682_PLL2_INTERNAL, 0x8266},
-	{RT5682_SAR_IL_CMD_3, 0x8365},
+	{RT5682_SAR_IL_CMD_1, 0x22b7},
+	{RT5682_SAR_IL_CMD_3, 0x0365},
+	{RT5682_SAR_IL_CMD_6, 0x0110},
 };
 
 void rt5682_apply_patch_list(struct rt5682_priv *rt5682, struct device *dev)
@@ -1726,8 +1728,6 @@ static const struct snd_soc_dapm_widget rt5682_dapm_widgets[] = {
 	SND_SOC_DAPM_MIXER("Stereo1 ADC MIXR", RT5682_STO1_ADC_DIG_VOL,
 		RT5682_R_MUTE_SFT, 1, rt5682_sto1_adc_r_mix,
 		ARRAY_SIZE(rt5682_sto1_adc_r_mix)),
-	SND_SOC_DAPM_SUPPLY("BTN Detection Mode", RT5682_SAR_IL_CMD_1,
-		14, 1, NULL, 0),
 
 	/* ADC PGA */
 	SND_SOC_DAPM_PGA("Stereo1 ADC MIX", SND_SOC_NOPM, 0, 0, NULL, 0),
@@ -1898,8 +1898,6 @@ static const struct snd_soc_dapm_route rt5682_dapm_routes[] = {
 	{"Stereo1 ADC MIXR", "ADC2 Switch", "Stereo1 ADC R2 Mux"},
 	{"Stereo1 ADC MIXR", NULL, "ADC Stereo1 Filter"},
 
-	{"ADC Stereo1 Filter", NULL, "BTN Detection Mode"},
-
 	{"Stereo1 ADC MIX", NULL, "Stereo1 ADC MIXL"},
 	{"Stereo1 ADC MIX", NULL, "Stereo1 ADC MIXR"},
 
@@ -2949,7 +2947,8 @@ static int rt5682_suspend(struct snd_soc_component *component)
 
 		/* enter SAR ADC power saving mode */
 		snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
-			RT5682_SAR_BUTT_DET_MASK | RT5682_SAR_BUTDET_MODE_MASK | RT5682_SAR_BUTDET_RST_MASK, 0);
+			RT5682_SAR_BUTT_DET_MASK | RT5682_SAR_BUTDET_MODE_MASK |
+			RT5682_SAR_BUTDET_RST_MASK | RT5682_SAR_SEL_MB1_MB2_MASK, 0);
 		snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
 			RT5682_SAR_BUTT_DET_MASK | RT5682_SAR_BUTDET_MODE_MASK | RT5682_SAR_BUTDET_RST_MASK,
 			RT5682_SAR_BUTT_DET_EN | RT5682_SAR_BUTDET_POW_SAV | RT5682_SAR_BUTDET_RST_NORMAL);
@@ -2971,6 +2970,9 @@ static int rt5682_resume(struct snd_soc_component *component)
 	regcache_sync(rt5682->regmap);
 
 	if (rt5682->hs_jack && rt5682->jack_type == SND_JACK_HEADSET) {
+		snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
+			RT5682_SAR_BUTDET_MODE_MASK | RT5682_SAR_SEL_MB1_MB2_MASK,
+			RT5682_SAR_BUTDET_POW_NORM | RT5682_SAR_SEL_MB1_MB2_AUTO);
 		snd_soc_component_update_bits(component, RT5682_CBJ_CTRL_1,
 			RT5682_MB1_PATH_MASK | RT5682_MB2_PATH_MASK,
 			RT5682_CTRL_MB1_FSM | RT5682_CTRL_MB2_FSM);