From nobody Sat Jul 25 21:59:35 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E86A34F483; Mon, 13 Jul 2026 10:03:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783937026; cv=none; b=h9NZHowbZDJISDRGdwcHp7KaVQfGy8CnNjq+IqbEKF192E1cZPK00nvsG2DdVp/V5Vqo9j+9+SwmZ+6xQAUMGF8Y4amn9tNON7LnZ4/fkVWAutJA5lzbJJj/pjyCGOh3+dHsXF3ravKQAISNcZu2SQdwpQxFyljPuDTOqlBcuuk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783937026; c=relaxed/simple; bh=oJlRnQT4n2LP+wVq4ExNHReKqnV8fv0xi73KLi1s/Wc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=OdAGOjfBt4xZCUBhA7Zn5VdYdmsBG30CuKjmIgc4+D4/FJuoYwn2T5Z9/8O+OiRd1lmjgyRRMWajW5/vYmLM9qmo7rpkAL2zASfVjE0xcaOekaR1C4MfNFSZUaPiziMcy7kFHsMZNExm6X8d5hIr/b6R0CuXjD95lRaGor0JH/0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: 1e5bef967ea211f1aa26b74ffac11d73-20260713 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:32e2e846-d0aa-4b0a-96d8-5fb2f39d1a7e,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:e7bac3a,CLOUDID:2b40409c8d3d53734e51e40457d2e46b,BulkI D:nil,BulkQuantity:0,Recheck:0,SF:102|850|865|898,TC:nil,Content:0|15|50,E DM:-3,IP:nil,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA :0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: 1e5bef967ea211f1aa26b74ffac11d73-20260713 X-User: zhangheng@kylinos.cn Received: from localhost.localdomain [(10.44.16.150)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 890307418; Mon, 13 Jul 2026 18:03:38 +0800 From: Zhang Heng To: perex@perex.cz, tiwai@suse.com, bo.liu@senarytech.com Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Zhang Heng , stable@vger.kernel.org Subject: [PATCH] ALSA: hda: conexant: Remove mic bias threshold override Date: Mon, 13 Jul 2026 18:03:29 +0800 Message-Id: <20260713100329.306892-1-zhangheng@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Remove the mic bias current comparator threshold override (NID 0x1c, verb 0x320, value 0x010) from Conexant codec driver. This override was originally intended to support volume up/down controls on headsets with inline remote controls, but it causes microphone detection failures on some headsets with impedance less than 1k ohm. After consulting with the vendor's engineers, it was confirmed that this setting is board-specific and should be handled by BIOS/firmware rather than the generic codec driver, especially since inline remote support is not currently implemented. Fixes: 7aeb25908648 ("ALSA: hda/conexant: Fix headset auto detect fail in c= x8070 and SN6140") Cc: stable@vger.kernel.org Signed-off-by: Zhang Heng --- sound/hda/codecs/conexant.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/sound/hda/codecs/conexant.c b/sound/hda/codecs/conexant.c index 3d92262763f6..40da2832ba66 100644 --- a/sound/hda/codecs/conexant.c +++ b/sound/hda/codecs/conexant.c @@ -162,9 +162,6 @@ static void cx_fixup_headset_recog(struct hda_codec *co= dec) { unsigned int mic_present; =20 - /* fix some headset type recognize fail issue, such as EDIFIER headset */ - /* set micbias output current comparator threshold from 66% to 55%. */ - snd_hda_codec_write(codec, 0x1c, 0, 0x320, 0x010); /* set OFF voltage for DFET from -1.2V to -0.8V, set headset micbias regi= ster * value adjustment trim from 2.2K ohms to 2.0K ohms. */ --=20 2.25.1