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Sat, 3 Feb 2018 13:28:18 -0500 Received: from mail-bl2nam02on0122.outbound.protection.outlook.com ([104.47.38.122]:14996 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752989AbeBCSE7 (ORCPT ); Sat, 3 Feb 2018 13:04:59 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Abhijeet Kumar , Mark Brown , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 15/52] ASoC: nau8825: fix issue that pop noise when start capture Thread-Topic: [PATCH AUTOSEL for 4.9 15/52] ASoC: nau8825: fix issue that pop noise when start capture Thread-Index: AQHTnRlSOT0g0dr8HESJQPcXVKrmvQ== Date: Sat, 3 Feb 2018 18:03:41 +0000 Message-ID: <20180203180303.8490-15-alexander.levin@microsoft.com> References: <20180203180303.8490-1-alexander.levin@microsoft.com> In-Reply-To: <20180203180303.8490-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;BL0PR2101MB1091;6:f0UJkSMBYJU1QEtgQok/hvaZZK0X4BXnnPfPNGa6jEmy92y04uj3yJzHCAJQKp1T3u+xpwpjCVh0bW6BbYLU10m53ALeFtuZnttoA1POEzzRixIHvIqyERM9BTOQptzjmfdygwl/+LNBf/f8PQbcTvRghADCR9nRSPORglwGrTvdsC+I4PSZaShUeon74sMg5GTxLaph7avDs+gSZJCEoOOsjqyoDRlnkOG6z+i3MVqwpC0Sgy+Ln7jTfQFdUUQfv9e4E2qwNDGCDmvz7m/bH6OL8kiNmxq5Ggz8OhbCp515S/sAu+mhqfFjb7J9/nq5w5rL0UGd0OWTiLn4W6IW0sRKm7sDDIqxkuxyVzPvNQv2VpRQRtB+v0CGWylCt3BX;5:tfTV1vVGUuv4l4iBtOpT6mtWGO4kFFF3rXkgPAWuQKjcnOK4LBFTTcEtUKmjkS28z2XexdEq1uqEmQwlic29oXGB81I1tHfSrHVyE5KLXgcXLaLp/neajz+ozGytO8zor1BLRRohVO9cRVUvC8/BdCyvo0lITA1r+e4LLRoGpwM=;24:T3uywb3BG/RNwXulxYa0HNXuQ/05EOffqAZuzM+EdQIOof65Peo3Z8LtP/o8BSzj/HdIWqFXCCVonLsc4DFsdfFbaoh/afKmkdbd4qoKQ6o=;7:OgShXZzyODZhy4pdFrh+uEEoz/gj8kByqQRjKrlw3bQAFXf1j/cpizqzYvWbDG2YxpflZD9QbJvF13ZOUzfnZXrWtwt+HDNrjr5ZxNd3FsXpXsBhRcMmHu8Ym32/7CD84Pjg/SlD3gzByQdQwW1qECANBHdQN3q8IyuzYdaffTHXqqCMCHI4HVsfvr1riMFsOquLqwYOHsvswYE87cNo5TLijPPsA8kroPaiVjHG2w0kwma7NKTKS8GSN1zu7aFU x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: f1bb5194-9056-4046-cd03-08d56b307582 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:BL0PR2101MB1091; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: HoGii6hQtCQ5rLgceseNarFca93tM3eRa9uJM2W5poEGe17m8dFr/xZW7Bl9v2cbN4zAmTTI1Od1XUWLPiDxjA== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: f1bb5194-9056-4046-cd03-08d56b307582 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Feb 2018 18:03:41.5495 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR2101MB1091 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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 --- sound/soc/codecs/nau8825.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index f9f2737c4ad2..a4871c4adcb0 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -882,6 +882,7 @@ static int nau8825_adc_event(struct snd_soc_dapm_widget= *w, =20 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; --=20 2.11.0