Patch "ASoC: rt5645: Fix the electric noise due to the CBJ contacts floating" has been added to the 4.19-stable tree

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This is a note to let you know that I've just added the patch titled

    ASoC: rt5645: Fix the electric noise due to the CBJ contacts floating

to the 4.19-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-rt5645-fix-the-electric-noise-due-to-the-cbj-co.patch
and it can be found in the queue-4.19 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 1d4ac4195f9b4e64b6c31f7a3a7ff249f6e1c282
Author: Derek Fang <derek.fang@xxxxxxxxxxx>
Date:   Mon Apr 8 17:10:56 2024 +0800

    ASoC: rt5645: Fix the electric noise due to the CBJ contacts floating
    
    [ Upstream commit 103abab975087e1f01b76fcb54c91dbb65dbc249 ]
    
    The codec leaves tie combo jack's sleeve/ring2 to floating status
    default. It would cause electric noise while connecting the active
    speaker jack during boot or shutdown.
    This patch requests a gpio to control the additional jack circuit
    to tie the contacts to the ground or floating.
    
    Signed-off-by: Derek Fang <derek.fang@xxxxxxxxxxx>
    
    Link: https://msgid.link/r/20240408091057.14165-1-derek.fang@xxxxxxxxxxx
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 5f23369d7ccad..fbb3fca59c8cb 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -412,6 +412,7 @@ struct rt5645_priv {
 	struct regmap *regmap;
 	struct i2c_client *i2c;
 	struct gpio_desc *gpiod_hp_det;
+	struct gpio_desc *gpiod_cbj_sleeve;
 	struct snd_soc_jack *hp_jack;
 	struct snd_soc_jack *mic_jack;
 	struct snd_soc_jack *btn_jack;
@@ -3206,6 +3207,9 @@ static int rt5645_jack_detect(struct snd_soc_component *component, int jack_inse
 		regmap_update_bits(rt5645->regmap, RT5645_IN1_CTRL2,
 			RT5645_CBJ_MN_JD, 0);
 
+		if (rt5645->gpiod_cbj_sleeve)
+			gpiod_set_value(rt5645->gpiod_cbj_sleeve, 1);
+
 		msleep(600);
 		regmap_read(rt5645->regmap, RT5645_IN1_CTRL3, &val);
 		val &= 0x7;
@@ -3222,6 +3226,8 @@ static int rt5645_jack_detect(struct snd_soc_component *component, int jack_inse
 			snd_soc_dapm_disable_pin(dapm, "Mic Det Power");
 			snd_soc_dapm_sync(dapm);
 			rt5645->jack_type = SND_JACK_HEADPHONE;
+			if (rt5645->gpiod_cbj_sleeve)
+				gpiod_set_value(rt5645->gpiod_cbj_sleeve, 0);
 		}
 		if (rt5645->pdata.level_trigger_irq)
 			regmap_update_bits(rt5645->regmap, RT5645_IRQ_CTRL2,
@@ -3247,6 +3253,9 @@ static int rt5645_jack_detect(struct snd_soc_component *component, int jack_inse
 		if (rt5645->pdata.level_trigger_irq)
 			regmap_update_bits(rt5645->regmap, RT5645_IRQ_CTRL2,
 				RT5645_JD_1_1_MASK, RT5645_JD_1_1_INV);
+
+		if (rt5645->gpiod_cbj_sleeve)
+			gpiod_set_value(rt5645->gpiod_cbj_sleeve, 0);
 	}
 
 	return rt5645->jack_type;
@@ -3892,6 +3901,16 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
 			return ret;
 	}
 
+	rt5645->gpiod_cbj_sleeve = devm_gpiod_get_optional(&i2c->dev, "cbj-sleeve",
+							   GPIOD_OUT_LOW);
+
+	if (IS_ERR(rt5645->gpiod_cbj_sleeve)) {
+		ret = PTR_ERR(rt5645->gpiod_cbj_sleeve);
+		dev_info(&i2c->dev, "failed to initialize gpiod, ret=%d\n", ret);
+		if (ret != -ENOENT)
+			return ret;
+	}
+
 	for (i = 0; i < ARRAY_SIZE(rt5645->supplies); i++)
 		rt5645->supplies[i].supply = rt5645_supply_names[i];
 
@@ -4135,6 +4154,9 @@ static int rt5645_i2c_remove(struct i2c_client *i2c)
 	cancel_delayed_work_sync(&rt5645->jack_detect_work);
 	cancel_delayed_work_sync(&rt5645->rcclock_work);
 
+	if (rt5645->gpiod_cbj_sleeve)
+		gpiod_set_value(rt5645->gpiod_cbj_sleeve, 0);
+
 	regulator_bulk_disable(ARRAY_SIZE(rt5645->supplies), rt5645->supplies);
 
 	return 0;
@@ -4152,6 +4174,9 @@ static void rt5645_i2c_shutdown(struct i2c_client *i2c)
 		0);
 	msleep(20);
 	regmap_write(rt5645->regmap, RT5645_RESET, 0);
+
+	if (rt5645->gpiod_cbj_sleeve)
+		gpiod_set_value(rt5645->gpiod_cbj_sleeve, 0);
 }
 
 static struct i2c_driver rt5645_i2c_driver = {




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