From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELtCypaHfUC54aFhQQSAnWekITm2Ge0miksTKVxiflsCszBvTj9Pc5l7hJP3jF/sAw23F2K+ ARC-Seal: i=1; a=rsa-sha256; t=1519981112; cv=none; d=google.com; s=arc-20160816; b=AXjv5Lr89YKG+UXThYBYRIVGjMR9FuWqz7EF8qb/4oxXMnU6oJHKLLaqPh4oh6zUBA LSJXYTiRdDm8zhbl51dDqE4XUvX/QUTpPGfniCfluGx8xtBx/efVAkVCHoLlt5UWY+M1 bbZ7jzxUYoYCs9wP2y00gBpu6V4suH6ZAOzU4/gKchNZFOG9IQIbszPVWCkTr5PB0b7H 2r+KmWazi1ODTvLQFU8OuYL+xOlMimMSyH4Qik2nIigPKWYWfHh4pzsvP6Cp2K9RtCh3 xPKVy6ntwCBTf1G79XoN6wzD4wv6hzjWjOMO97fkjhK30bYJNRfGELJNumXsGQtsCuRT WXhQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=r+K204wxDT/RQLf4LRW6yd98geOrsugiLhlAC15gJxU=; b=JKrpAFZysXT0wDWKpGf0VLHibNUpoK0qyp3sgVqM0fjpWBg65jsClC2Sp87VBkX8+S TADg1C+IeT5tZQydhw5kDrqtBlSRV+99ISUnb8ktacBMK/MKtsBNIibsdN0QHViNaAUe x/vPIVM5nGY55RSacwThK2l2zrYhEul9jWZ09nlI3oYUJXxwnIG5eVUV1sLcVr52bNe2 uSbI2TskaZVvr38vuuHJ2ahDxE3r+Y8pmKkIeFnNFlhxwNwrPp/vLD15Wr82++gcYCL8 phRJWcfAgtX0BKUlyAHy8AzzvKgXord1lUJe9F+5OTKxhJoqmBwJ8tPGC4hQMKXzj2Z/ RS6g== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 83.175.124.243 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 83.175.124.243 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Abhijeet Kumar , Mark Brown , Sasha Levin Subject: [PATCH 4.9 17/56] ASoC: nau8825: fix issue that pop noise when start capture Date: Fri, 2 Mar 2018 09:51:03 +0100 Message-Id: <20180302084450.493679502@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180302084449.568562222@linuxfoundation.org> References: <20180302084449.568562222@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1593815714393485351?= X-GMAIL-MSGID: =?utf-8?q?1593815714393485351?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Abhijeet Kumar [ Upstream commit d070f7c703ef26e3db613f24206823f916272fc6 ] In skylake platform, we hear a loud pop noise(0 dB) at start of audio capture power up sequence. This patch removes the pop noise from the recording by adding a delay before enabling ADC. Signed-off-by: Abhijeet Kumar Signed-off-by: Mark Brown Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- sound/soc/codecs/nau8825.c | 1 + 1 file changed, 1 insertion(+) --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -882,6 +882,7 @@ static int nau8825_adc_event(struct snd_ switch (event) { case SND_SOC_DAPM_POST_PMU: + msleep(125); regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC); break;