[PATCH 6.1.y 5/6] ASOC: codecs: ES8326: Add calibration support for version_b

[kovalev@xxxxxxxxxxxx]

From: Zhu Ning <zhuning0077@xxxxxxxxx>

Commit 0663286e58e6f611f3578b5e63e1faa576d139fd upstream.

Version_b requires a new way of calibrating headset offset. A new
calibration function is added.

Signed-off-by: Zhu Ning <zhuning0077@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230717033223.42506-4-zhuning0077@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Vasiliy Kovalev <kovalev@xxxxxxxxxxxx>
---
 sound/soc/codecs/es8326.c | 83 ++++++++++++++++++++++++++++++++-------
 1 file changed, 68 insertions(+), 15 deletions(-)

diff --git a/sound/soc/codecs/es8326.c b/sound/soc/codecs/es8326.c
index 00ffe788bc8c6f..eda0e53a1d8e43 100644
--- a/sound/soc/codecs/es8326.c
+++ b/sound/soc/codecs/es8326.c
@@ -388,6 +388,7 @@ 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);
+	unsigned int offset_l, offset_r;
 
 	if (mute) {
 		regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_OFF);
@@ -398,10 +399,16 @@ static int es8326_mute(struct snd_soc_dai *dai, int mute, int direction)
 		if (!es8326->calibrated) {
 			regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_FORCE_CAL);
 			msleep(30);
+			regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_OFF);
+			regmap_read(es8326->regmap, ES8326_HPL_OFFSET_INI, &offset_l);
+			regmap_read(es8326->regmap, ES8326_HPR_OFFSET_INI, &offset_r);
+			regmap_write(es8326->regmap, ES8326_HP_OFFSET_CAL, 0x8c);
+			regmap_write(es8326->regmap, ES8326_HPL_OFFSET_INI, offset_l);
+			regmap_write(es8326->regmap, ES8326_HPR_OFFSET_INI, offset_r);
 			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_VOL, 0x80);
 		regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_ON);
 		regmap_update_bits(es8326->regmap, ES8326_DAC_MUTE,
 				ES8326_MUTE_MASK, ~(ES8326_MUTE));
@@ -420,15 +427,17 @@ static int es8326_set_bias_level(struct snd_soc_component *codec,
 		ret = clk_prepare_enable(es8326->mclk);
 		if (ret)
 			return ret;
-		regmap_write(es8326->regmap, ES8326_RESET, ES8326_PWRUP_SEQ_EN);
-		regmap_write(es8326->regmap, ES8326_INTOUT_IO, 0x45);
+
+		regmap_write(es8326->regmap, ES8326_RESET, 0x9f);
+		msleep(20);
+		regmap_update_bits(es8326->regmap, ES8326_DAC_DSM, 0x01, 0x00);
+		regmap_write(es8326->regmap, ES8326_INTOUT_IO, es8326->interrupt_clk);
 		regmap_write(es8326->regmap, ES8326_SDINOUT1_IO,
 			    (ES8326_IO_DMIC_CLK << ES8326_SDINOUT1_SHIFT));
-		regmap_write(es8326->regmap, ES8326_SDINOUT23_IO, ES8326_IO_INPUT);
-		regmap_write(es8326->regmap, ES8326_CLK_RESAMPLE, 0x05);
-		regmap_write(es8326->regmap, ES8326_VMIDSEL, 0x02);
+		regmap_write(es8326->regmap, ES8326_VMIDSEL, 0x0E);
 		regmap_write(es8326->regmap, ES8326_PGA_PDN, 0x40);
-		regmap_write(es8326->regmap, ES8326_DAC2HPMIX, 0xAA);
+		regmap_write(es8326->regmap, ES8326_ANA_PDN, 0x00);
+		regmap_update_bits(es8326->regmap,  ES8326_CLK_CTL, 0x20, 0x20);
 		regmap_write(es8326->regmap, ES8326_RESET, ES8326_CSM_ON);
 		break;
 	case SND_SOC_BIAS_PREPARE:
@@ -437,15 +446,10 @@ static int es8326_set_bias_level(struct snd_soc_component *codec,
 		break;
 	case SND_SOC_BIAS_OFF:
 		clk_disable_unprepare(es8326->mclk);
-		regmap_write(es8326->regmap, ES8326_DAC2HPMIX, 0x11);
-		regmap_write(es8326->regmap, ES8326_RESET, ES8326_CSM_OFF);
-		regmap_write(es8326->regmap, ES8326_PGA_PDN, 0xF8);
+		regmap_write(es8326->regmap, ES8326_ANA_PDN, 0x3b);
 		regmap_write(es8326->regmap, ES8326_VMIDSEL, 0x00);
-		regmap_write(es8326->regmap, ES8326_INT_SOURCE, 0x08);
+		regmap_update_bits(es8326->regmap, ES8326_CLK_CTL, 0x20, 0x00);
 		regmap_write(es8326->regmap, ES8326_SDINOUT1_IO, ES8326_IO_INPUT);
-		regmap_write(es8326->regmap, ES8326_SDINOUT23_IO, ES8326_IO_INPUT);
-		regmap_write(es8326->regmap, ES8326_RESET,
-			     ES8326_CODEC_RESET | ES8326_PWRUP_SEQ_EN);
 		break;
 	}
 
@@ -635,6 +639,54 @@ static irqreturn_t es8326_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static int es8326_calibrate(struct snd_soc_component *component)
+{
+	struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
+	unsigned int reg;
+	unsigned int offset_l, offset_r;
+
+	regmap_read(es8326->regmap, ES8326_CHIP_VERSION, &reg);
+	es8326->version = reg;
+
+	if ((es8326->version == ES8326_VERSION_B) && (es8326->calibrated == false)) {
+		dev_dbg(component->dev, "ES8326_VERSION_B, calibrating\n");
+		regmap_write(es8326->regmap, ES8326_CLK_INV, 0xc0);
+		regmap_write(es8326->regmap, ES8326_CLK_DIV1, 0x01);
+		regmap_write(es8326->regmap, ES8326_CLK_DLL, 0x30);
+		regmap_write(es8326->regmap, ES8326_CLK_MUX, 0xed);
+		regmap_write(es8326->regmap, ES8326_CLK_TRI, 0xc1);
+		regmap_write(es8326->regmap, ES8326_DAC_MUTE, 0x03);
+		regmap_write(es8326->regmap, ES8326_ANA_VSEL, 0x7f);
+		regmap_write(es8326->regmap, ES8326_VMIDLOW, 0x33);
+		regmap_write(es8326->regmap, ES8326_DAC2HPMIX, 0x88);
+		regmap_write(es8326->regmap, ES8326_HP_VOL, 0x80);
+		regmap_write(es8326->regmap, ES8326_HP_OFFSET_CAL, 0x8c);
+		regmap_write(es8326->regmap, ES8326_RESET, 0xc0);
+		usleep_range(15000, 20000);
+
+		regmap_write(es8326->regmap, ES8326_HP_OFFSET_CAL, ES8326_HP_OFF);
+		regmap_read(es8326->regmap, ES8326_CSM_MUTE_STA, &reg);
+		if ((reg & 0xf0) != 0x40)
+			msleep(50);
+
+		regmap_write(es8326->regmap, ES8326_HP_CAL, 0xd4);
+		msleep(200);
+		regmap_write(es8326->regmap, ES8326_HP_CAL, 0x4d);
+		msleep(200);
+		regmap_write(es8326->regmap, ES8326_HP_CAL, ES8326_HP_OFF);
+		regmap_read(es8326->regmap, ES8326_HPL_OFFSET_INI, &offset_l);
+		regmap_read(es8326->regmap, ES8326_HPR_OFFSET_INI, &offset_r);
+		regmap_write(es8326->regmap, ES8326_HP_OFFSET_CAL, 0x8c);
+		regmap_write(es8326->regmap, ES8326_HPL_OFFSET_INI, offset_l);
+		regmap_write(es8326->regmap, ES8326_HPR_OFFSET_INI, offset_r);
+		regmap_write(es8326->regmap, ES8326_CLK_INV, 0x00);
+
+		es8326->calibrated = true;
+	}
+
+	return 0;
+}
+
 static int es8326_resume(struct snd_soc_component *component)
 {
 	struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
@@ -673,7 +725,8 @@ static int es8326_resume(struct snd_soc_component *component)
 	regmap_write(es8326->regmap, ES8326_CLK_VMIDS1, 0xc4);
 	regmap_write(es8326->regmap, ES8326_CLK_VMIDS2, 0x81);
 	regmap_write(es8326->regmap, ES8326_CLK_CAL_TIME, 0x00);
-
+	/* calibrate for B version */
+	es8326_calibrate(component);
 	/* turn off headphone out */
 	regmap_write(es8326->regmap, ES8326_HP_CAL, 0x00);
 	/* set ADC and DAC in low power mode */
-- 
2.33.8