From 4c017ff3d73dda968ed2ce29239f76edbc63c8d2 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Wed, 23 Apr 2025 10:09:44 +0100 Subject: [PATCH] ASoC: cs42l43: Disable headphone clamps during type detection [ Upstream commit 70ad2e6bd180f94be030aef56e59693e36d945f3 ] The headphone clamps cause fairly loud pops during type detect because they sink current from the detection process itself. Disable the clamps whilst the type detect runs, to improve the detection pop performance. Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20250423090944.1504538-1-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/cs42l43-jack.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/soc/codecs/cs42l43-jack.c b/sound/soc/codecs/cs42l43-jack.c index 0b8e88b19888..6d8455c1bee6 100644 --- a/sound/soc/codecs/cs42l43-jack.c +++ b/sound/soc/codecs/cs42l43-jack.c @@ -642,6 +642,10 @@ static int cs42l43_run_type_detect(struct cs42l43_codec *priv) reinit_completion(&priv->type_detect); + regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL, + CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK, + CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK); + cs42l43_start_hs_bias(priv, true); regmap_update_bits(cs42l43->regmap, CS42L43_HS2, CS42L43_HSDET_MODE_MASK, 0x3 << CS42L43_HSDET_MODE_SHIFT); @@ -653,6 +657,9 @@ static int cs42l43_run_type_detect(struct cs42l43_codec *priv) CS42L43_HSDET_MODE_MASK, 0x2 << CS42L43_HSDET_MODE_SHIFT); cs42l43_stop_hs_bias(priv); + regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL, + CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK, 0); + if (!time_left) return -ETIMEDOUT;