ASoC: rt5645: Prevent the pop sound of the headphone while rebooting or shutdowning

Add i2c shutdown function to prevent the pop sound of the headphone while
the system is rebooting or shutdowning. It de-initials the jack detection
function, and it cannot be turned off in _BIAS_OFF. If we don't de-initial
it, the pop sound will be heard in the situation of powering off. And
replace the related register settings from magic number to meaningful
defined name.
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5645.c

@@ -2806,13 +2806,13 @@ static int rt5645_jack_detect(struct snd_soc_codec *codec, int jack_insert)
 		}
 
 		regmap_write(rt5645->regmap, RT5645_JD_CTRL3, 0x00f0);
-		regmap_update_bits(rt5645->regmap,
-				   RT5645_IN1_CTRL2, 0x1000, 0x1000);
-		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL1, 0x0004,
-			0x0004);
+		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL2,
+			RT5645_CBJ_MN_JD, RT5645_CBJ_MN_JD);
+		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL1,
+			RT5645_CBJ_BST1_EN, RT5645_CBJ_BST1_EN);
 		msleep(100);
-		regmap_update_bits(rt5645->regmap,
-				   RT5645_IN1_CTRL2, 0x1000, 0x0000);
+		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL2,
+			RT5645_CBJ_MN_JD, 0);
 
 		msleep(600);
 		regmap_read(rt5645->regmap, RT5645_IN1_CTRL3, &val);
@@ -2836,10 +2836,10 @@ static int rt5645_jack_detect(struct snd_soc_codec *codec, int jack_insert)
 	} else { /* jack out */
 		rt5645->jack_type = 0;
 
-		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL2, 0x1000,
-			0x1000);
-		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL1, 0x0004,
-			0x0000);
+		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL2,
+			RT5645_CBJ_MN_JD, RT5645_CBJ_MN_JD);
+		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL1,
+			RT5645_CBJ_BST1_EN, 0);
 
 		if (rt5645->en_button_func)
 			rt5645_enable_push_button_irq(codec, false);
@@ -3449,6 +3449,18 @@ static int rt5645_i2c_remove(struct i2c_client *i2c)
 	return 0;
 }
 
+static void rt5645_i2c_shutdown(struct i2c_client *i2c)
+{
+	struct rt5645_priv *rt5645 = i2c_get_clientdata(i2c);
+
+	regmap_update_bits(rt5645->regmap, RT5645_GEN_CTRL3,
+		RT5645_RING2_SLEEVE_GND, RT5645_RING2_SLEEVE_GND);
+	regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL2, RT5645_CBJ_MN_JD,
+		RT5645_CBJ_MN_JD);
+	regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL1, RT5645_CBJ_BST1_EN,
+		0);
+}
+
 static struct i2c_driver rt5645_i2c_driver = {
 	.driver = {
 		.name = "rt5645",
@@ -3457,6 +3469,7 @@ static struct i2c_driver rt5645_i2c_driver = {
 	},
 	.probe = rt5645_i2c_probe,
 	.remove = rt5645_i2c_remove,
+	.shutdown = rt5645_i2c_shutdown,
 	.id_table = rt5645_i2c_id,
 };
 module_i2c_driver(rt5645_i2c_driver);

sound/soc/codecs/rt5645.h

@@ -2111,6 +2111,7 @@ enum {
 #define RT5645_JD_PSV_MODE			(0x1 << 12)
 #define RT5645_IRQ_CLK_GATE_CTRL		(0x1 << 11)
 #define RT5645_MICINDET_MANU			(0x1 << 7)
+#define RT5645_RING2_SLEEVE_GND			(0x1 << 5)
 
 /* Vendor ID (0xfd) */
 #define RT5645_VER_C				0x2