[alsa-devel] [PATCH] ASoC: rt5663: Add delay for jack plug in

[Oder Chiou]

Codec initialize takes some time when 3.5mm jack plugged in. Add a
delay to report jack plugged event to user space to avoid pop noise.

Signed-off-by: Hsinyu Chao <hychao at chromium.org>
Signed-off-by: Oder Chiou <oder_chiou at realtek.com>
---
 sound/soc/codecs/rt5663.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/rt5663.c b/sound/soc/codecs/rt5663.c
index c98a8a7..ab9e0eb 100644
--- a/sound/soc/codecs/rt5663.c
+++ b/sound/soc/codecs/rt5663.c
@@ -1705,6 +1705,9 @@ static void rt5663_jack_detect_work(struct work_struct *work)
 			default:
 				dev_err(codec->dev, "Unknown CODEC Version\n");
 			}
+
+			/* Delay the jack insert report to avoid pop noise */
+			msleep(30);
 		} else {
 			/* jack is already in, report button event */
 			report = SND_JACK_HEADSET;
-- 
2.7.4