ASoC: codecs: ES8326: Add es8326_mute function

The internal analog power and hp Vref of es8326 should always be on to
reduce pop noise. The HP_VOL and HP_CAL are moved to es8326_mute function
so they are turned on at last and turned off at first.

Also, the calibration should be done manually once during start-up
to reduce DC offset on headphone.
Signed-off-by: Zhu Ning <zhuning0077@gmail.com>
Link: https://lore.kernel.org/r/20230714032453.3334-1-zhuning0077@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/es8326.c

@@ -38,6 +38,9 @@ struct es8326_priv {
 	u8 interrupt_clk;
 	bool jd_inverted;
 	unsigned int sysclk;
+
+	bool calibrated;
+	int version;
 };
 
 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(dac_vol_tlv, -9550, 50, 0);
@@ -121,33 +124,12 @@ static const struct snd_soc_dapm_widget es8326_dapm_widgets[] = {
 	/* Analog Power Supply*/
 	SND_SOC_DAPM_DAC("Right DAC", NULL, ES8326_ANA_PDN, 0, 1),
 	SND_SOC_DAPM_DAC("Left DAC", NULL, ES8326_ANA_PDN, 1, 1),
-	SND_SOC_DAPM_SUPPLY("Analog Power", ES8326_ANA_PDN, 7, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("IBias Power", ES8326_ANA_PDN, 6, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("ADC Vref", ES8326_ANA_PDN, 5, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("DAC Vref", ES8326_ANA_PDN, 4, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("Vref Power", ES8326_ANA_PDN, 3, 1, NULL, 0),
 	SND_SOC_DAPM_SUPPLY("MICBIAS1", ES8326_ANA_MICBIAS, 2, 0, NULL, 0),
 	SND_SOC_DAPM_SUPPLY("MICBIAS2", ES8326_ANA_MICBIAS, 3, 0, NULL, 0),
 
 	SND_SOC_DAPM_PGA("LHPMIX", ES8326_DAC2HPMIX, 7, 0, NULL, 0),
 	SND_SOC_DAPM_PGA("RHPMIX", ES8326_DAC2HPMIX, 3, 0, NULL, 0),
 
-	/* Headphone Charge Pump and Output */
-	SND_SOC_DAPM_SUPPLY("HPOR Cal", ES8326_HP_CAL, 7, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("HPOL Cal", ES8326_HP_CAL, 3, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", ES8326_HP_DRIVER,
-			    3, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("Headphone Driver Bias", ES8326_HP_DRIVER,
-			    2, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("Headphone LDO", ES8326_HP_DRIVER,
-			    1, 1, NULL, 0),
-	SND_SOC_DAPM_SUPPLY("Headphone Reference", ES8326_HP_DRIVER,
-			    0, 1, NULL, 0),
-	SND_SOC_DAPM_REG(snd_soc_dapm_supply, "HPOR Supply", ES8326_HP_CAL,
-			 ES8326_HPOR_SHIFT, 7, 7, 0),
-	SND_SOC_DAPM_REG(snd_soc_dapm_supply, "HPOL Supply", ES8326_HP_CAL,
-			 0, 7, 7, 0),
-
 	SND_SOC_DAPM_OUTPUT("HPOL"),
 	SND_SOC_DAPM_OUTPUT("HPOR"),
 };
@@ -166,34 +148,12 @@ static const struct snd_soc_dapm_route es8326_dapm_routes[] = {
 	{"I2S OUT", NULL, "ADC L"},
 	{"I2S OUT", NULL, "ADC R"},
 
-	{"I2S OUT", NULL, "Analog Power"},
-	{"I2S OUT", NULL, "ADC Vref"},
-	{"I2S OUT", NULL, "Vref Power"},
-	{"I2S OUT", NULL, "IBias Power"},
-	{"I2S IN", NULL, "Analog Power"},
-	{"I2S IN", NULL, "DAC Vref"},
-	{"I2S IN", NULL, "Vref Power"},
-	{"I2S IN", NULL, "IBias Power"},
-
 	{"Right DAC", NULL, "I2S IN"},
 	{"Left DAC", NULL, "I2S IN"},
 
 	{"LHPMIX", NULL, "Left DAC"},
 	{"RHPMIX", NULL, "Right DAC"},
 
-	{"HPOR", NULL, "HPOR Cal"},
-	{"HPOL", NULL, "HPOL Cal"},
-	{"HPOR", NULL, "HPOR Supply"},
-	{"HPOL", NULL, "HPOL Supply"},
-	{"HPOL", NULL, "Headphone Charge Pump"},
-	{"HPOR", NULL, "Headphone Charge Pump"},
-	{"HPOL", NULL, "Headphone Driver Bias"},
-	{"HPOR", NULL, "Headphone Driver Bias"},
-	{"HPOL", NULL, "Headphone LDO"},
-	{"HPOR", NULL, "Headphone LDO"},
-	{"HPOL", NULL, "Headphone Reference"},
-	{"HPOR", NULL, "Headphone Reference"},
-
 	{"HPOL", NULL, "LHPMIX"},
 	{"HPOR", NULL, "RHPMIX"},
 };
@@ -419,6 +379,31 @@ static int es8326_pcm_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
+static int es8326_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+	struct snd_soc_component *component = dai->component;
+	struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
+
+	if (mute) {
+		regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_OFF);
+		regmap_update_bits(es8326->regmap, ES8326_DAC_MUTE,
+				ES8326_MUTE_MASK, ES8326_MUTE);
+		regmap_write(es8326->regmap, ES8326_HP_DRIVER, 0xf0);
+	} else {
+		if (!es8326->calibrated) {
+			regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_FORCE_CAL);
+			msleep(30);
+			es8326->calibrated = true;
+		}
+		regmap_write(es8326->regmap, ES8326_HP_DRIVER, 0xa0);
+		regmap_write(es8326->regmap, ES8326_HP_VOL, 0x00);
+		regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_ON);
+		regmap_update_bits(es8326->regmap, ES8326_DAC_MUTE,
+				ES8326_MUTE_MASK, ~(ES8326_MUTE));
+	}
+	return 0;
+}
+
 static int es8326_set_bias_level(struct snd_soc_component *codec,
 				 enum snd_soc_bias_level level)
 {
@@ -469,6 +454,8 @@ static const struct snd_soc_dai_ops es8326_ops = {
 	.hw_params = es8326_pcm_hw_params,
 	.set_fmt = es8326_set_dai_fmt,
 	.set_sysclk = es8326_set_dai_sysclk,
+	.mute_stream = es8326_mute,
+	.no_capture_mute = 1,
 };
 
 static struct snd_soc_dai_driver es8326_dai = {
@@ -691,7 +678,7 @@ static int es8326_suspend(struct snd_soc_component *component)
 
 	cancel_delayed_work_sync(&es8326->jack_detect_work);
 	es8326_disable_micbias(component);
-
+	es8326->calibrated = false;
 	regmap_write(es8326->regmap, ES8326_CLK_CTL, ES8326_CLK_OFF);
 	regcache_cache_only(es8326->regmap, true);
 	regcache_mark_dirty(es8326->regmap);

sound/soc/codecs/es8326.h

@@ -9,8 +9,6 @@
 #ifndef _ES8326_H
 #define _ES8326_H
 
-#define CONFIG_HHTECH_MINIPMP	1
-
 /* ES8326 register space */
 #define ES8326_RESET		0x00
 #define ES8326_CLK_CTL		0x01
@@ -94,6 +92,8 @@
 #define	ES8326_PWRUP_SEQ_EN	(1 << 5)
 #define ES8326_CODEC_RESET (0x0f << 0)
 #define ES8326_CSM_OFF (0 << 7)
+#define ES8326_MUTE_MASK (3 << 0)
+#define ES8326_MUTE (3 << 0)
 
 /* ES8326_CLK_CTL */
 #define ES8326_CLK_ON (0x7f << 0)
@@ -122,7 +122,9 @@
 #define ES8326_MIC2_SEL (1 << 5)
 
 /* ES8326_HP_CAL */
-#define ES8326_HPOR_SHIFT 4
+#define ES8326_HP_OFF 0
+#define ES8326_HP_FORCE_CAL ((1 << 7) | (1 << 3))
+#define ES8326_HP_ON ((7 << 4) | (7 << 0))
 
 /* ES8326_ADC1_SRC */
 #define ES8326_ADC1_SHIFT 0
@@ -180,3 +182,4 @@
 #define ES8326_VERSION_B (1 << 0)
 
 #endif
+