From 70ad2e6bd180f94be030aef56e59693e36d945f3 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 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 --- 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 20e6ab6f0d4a..6165ac16c3a9 100644 --- a/sound/soc/codecs/cs42l43-jack.c +++ b/sound/soc/codecs/cs42l43-jack.c @@ -654,6 +654,10 @@ 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); @@ -665,6 +669,9 @@ 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; -- 2.25.1