From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 9BFF23E1713 for ; Wed, 22 Jul 2026 11:33:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784720029; cv=none; b=Te9EZwCXyxeC/zSoHdOc9jR6dk1SjVpzqszOpGUSZXo1RRa1fz5aChUqvmAtOOt0AyqM0hDm/eyeHNx0mJZ95ymYQlNRFiyEoM1EGUvksCNDR1bGcZMMF5d2yIFmaIdP5aggphkFMnI9W+aimJw11a5tRDLpSp3sHP74yEZTvIM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784720029; c=relaxed/simple; bh=zRkIdp8i0Z1q4k/Lint4s1PsVI5vGI+tdVdMDWI2DPI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=An0HPJlgOh7KBDAK6CED7h2dv+5QgJo3je3eFiUx58nhDTFQbKfUg2M+Q8hdusITM4di8eEdWxh3vKzxjy6qcZbcKavM1zphZqvR9ImjOdseVoyTiMtAo8TLbziKJpAP4nRTuR5jL20dBjN8vLsOF0wz50e8iM8MinV87Irbqhs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZGubhDtS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZGubhDtS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB6251F000E9; Wed, 22 Jul 2026 11:33:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784720028; bh=jK5ywpNFsp8uUqwLqrYZJ1MhwJfcbaWsJf3htZvaVM0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZGubhDtSe1am5O7skL9Ymsr7cUvQI4dqFsurZtB78RaQ08bUJ3RibP+nNaI6nG1oJ zmIs0FYPBIBSJ/iu0lMW8NQrdBkmtqJPirH/RbULN791Vlr7ReJwb4VYz6WCgvjcNd /B2wkVKJlKUP7sDPcm9TOG/QiIxZ/xifou9A4Zw9mIsjwIfimBk2XAnxvTL4usQgOB qJbTvErALK3fs7xkbPsGdj60l1Bh4Y919xEsbDW+zBh3egUDCW3V+EqQTKNEDkksBN O8xmDdAqza6YIXWEeZJfUIRMRupueIpa14rXyAMhxAXb8HTr3iaeZCQy4bMkUKYN95 zFifZe1Gbwgyg== From: Sasha Levin To: stable@vger.kernel.org Cc: Zhang Heng , Takashi Iwai , Sasha Levin Subject: [PATCH 5.15.y] ALSA: hda: conexant: Remove mic bias threshold override Date: Wed, 22 Jul 2026 07:33:46 -0400 Message-ID: <20260722113346.1150776-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026072003-jargon-yeah-7882@gregkh> References: <2026072003-jargon-yeah-7882@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Zhang Heng [ Upstream commit f52524da7084c1a54683ae9fbc73e93fff19dd64 ] 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 cx8070 and SN6140") Cc: stable@vger.kernel.org Signed-off-by: Zhang Heng Link: https://patch.msgid.link/20260713100329.306892-1-zhangheng@kylinos.cn Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/pci/hda/patch_conexant.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 82186c4364c9b8..0aed86820402c5 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -168,9 +168,6 @@ static void cx_fixup_headset_recog(struct hda_codec *codec) { unsigned int mic_present; - /* 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 register * value adjustment trim from 2.2K ohms to 2.0K ohms. */ -- 2.53.0