linux-kernel - [PATCH] ASoC: cs42l43: Increase default type detect time and button delay

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Date: Tue, 4 Jun 2024 14:28:43 +0100
From: Charles Keepax <ckeepax@...nsource.cirrus.com>
To: <broonie@...nel.org>
CC: <lgirdwood@...il.com>, <linux-sound@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>
Subject: [PATCH] ASoC: cs42l43: Increase default type detect time and button delay

From: Maciej Strozek <mstrozek@...nsource.cirrus.com>

Some problematic headsets have been discovered, to help with correctly
identifying these, the detect time must be increased. Also improve the
reliability of the impedance value from the button detect by slightly
increasing the button detect delay.

Fixes: 686b8f711b99 ("ASoC: cs42l43: Lower default type detect time")
Signed-off-by: Maciej Strozek <mstrozek@...nsource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
 sound/soc/codecs/cs42l43-jack.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/cs42l43-jack.c b/sound/soc/codecs/cs42l43-jack.c
index 901b9dbcf585..d9ab003e166b 100644
--- a/sound/soc/codecs/cs42l43-jack.c
+++ b/sound/soc/codecs/cs42l43-jack.c
@@ -121,7 +121,7 @@ int cs42l43_set_jack(struct snd_soc_component *component,
 		priv->buttons[3] = 735;
 	}
 
-	ret = cs42l43_find_index(priv, "cirrus,detect-us", 1000, &priv->detect_us,
+	ret = cs42l43_find_index(priv, "cirrus,detect-us", 50000, &priv->detect_us,
 				 cs42l43_accdet_us, ARRAY_SIZE(cs42l43_accdet_us));
 	if (ret < 0)
 		goto error;
@@ -433,7 +433,7 @@ irqreturn_t cs42l43_button_press(int irq, void *data)
 
 	// Wait for 2 full cycles of comb filter to ensure good reading
 	queue_delayed_work(system_wq, &priv->button_press_work,
-			   msecs_to_jiffies(10));
+			   msecs_to_jiffies(20));
 
 	return IRQ_HANDLED;
 }
-- 
2.39.2