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From 053938f67f73773152f70d89aa32e7893ee19694 Mon Sep 17 00:00:00 2001
From: b-ak <anur.bhargav@gmail.com>
Date: Wed, 9 Jan 2019 22:41:21 +0530
Subject: [PATCH 396/806] ASoC: tlv320aic32x4: SND_SOC_DAPM_MICBIAS is
 deprecated

commit 04d979d7a7bac2f645cd827ea37e5ffa5b4e1f97 upstream.

SND_SOC_DAPM_MICBIAS is deprecated, replace it with SND_SOC_DAPM_SUPPLY.

MICBIAS voltage wasn't supplied to the microphone with the older
SND_SOC_DAPM_MICBIAS widget, hence the microphone wouldn't work.

This patch fixes the problem.

Signed-off-by: b-ak <anur.bhargav@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/codecs/tlv320aic32x4.c | 30 +++++++++++++++++++++++++++++-
 sound/soc/codecs/tlv320aic32x4.h |  1 +
 2 files changed, 30 insertions(+), 1 deletion(-)

--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -79,6 +79,32 @@ struct aic32x4_priv {
 	struct device *dev;
 };
 
+static int mic_bias_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		/* Change Mic Bias Registor */
+		snd_soc_component_update_bits(component, AIC32X4_MICBIAS,
+				AIC32x4_MICBIAS_MASK,
+				AIC32X4_MICBIAS_LDOIN |
+				AIC32X4_MICBIAS_2075V);
+		printk(KERN_DEBUG "%s: Mic Bias will be turned ON\n", __func__);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_component_update_bits(component, AIC32X4_MICBIAS,
+				AIC32x4_MICBIAS_MASK, 0);
+		printk(KERN_DEBUG "%s: Mic Bias will be turned OFF\n",
+				__func__);
+		break;
+	}
+
+	return 0;
+}
+
+
 static int aic32x4_get_mfp1_gpio(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
@@ -450,7 +476,9 @@ static const struct snd_soc_dapm_widget
 	SND_SOC_DAPM_MUX("IN3_R to Left Mixer Negative Resistor", SND_SOC_NOPM, 0, 0,
 			in3r_to_lmixer_controls),
 
-	SND_SOC_DAPM_MICBIAS("Mic Bias", AIC32X4_MICBIAS, 6, 0),
+	SND_SOC_DAPM_SUPPLY("Mic Bias", AIC32X4_MICBIAS, 6, 0, mic_bias_event,
+			SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+
 
 	SND_SOC_DAPM_OUTPUT("HPL"),
 	SND_SOC_DAPM_OUTPUT("HPR"),
--- a/sound/soc/codecs/tlv320aic32x4.h
+++ b/sound/soc/codecs/tlv320aic32x4.h
@@ -195,6 +195,7 @@ int aic32x4_remove(struct device *dev);
 /* AIC32X4_MICBIAS */
 #define AIC32X4_MICBIAS_LDOIN		BIT(3)
 #define AIC32X4_MICBIAS_2075V		0x60
+#define AIC32x4_MICBIAS_MASK            GENMASK(6, 3)
 
 /* AIC32X4_LMICPGANIN */
 #define AIC32X4_LMICPGANIN_IN2R_10K	0x10