From patchwork Wed Apr 8 10:18:31 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caesar Wang X-Patchwork-Id: 6178091 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5F2249F349 for ; Wed, 8 Apr 2015 10:19:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7131620221 for ; Wed, 8 Apr 2015 10:19:29 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 77957200C6 for ; Wed, 8 Apr 2015 10:19:28 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Yfn4x-0008IM-Ks; Wed, 08 Apr 2015 10:19:27 +0000 Received: from regular1.263xmail.com ([211.150.99.137]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Yfn4e-0007lf-Tg; Wed, 08 Apr 2015 10:19:11 +0000 Received: from wxt?rock-chips.com (unknown [192.168.167.192]) by regular1.263xmail.com (Postfix) with SMTP id 0964A6DEA; Wed, 8 Apr 2015 18:18:42 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 450481ED46; Wed, 8 Apr 2015 18:18:34 +0800 (CST) X-RL-SENDER: wxt@rock-chips.com X-FST-TO: sonnyrao@chromium.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: wxt@rock-chips.com X-UNIQUE-TAG: <3b34f9b795fcdd6b9ab0362c78919acf> X-ATTACHMENT-NUM: 0 X-SENDER: wxt@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 7785BS0VTR; Wed, 08 Apr 2015 18:18:36 +0800 (CST) From: Caesar Wang To: Sonny Rao , Cheng-Yi Chiang , Heiko Stuebner , Mark Brown , zhengxing , "jay.xu" Subject: [PATCH v2] ASoC: max98090: add shutdown callback for max98090 Date: Wed, 8 Apr 2015 18:18:31 +0800 Message-Id: <1428488311-27237-1-git-send-email-wxt@rock-chips.com> X-Mailer: git-send-email 1.9.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150408_031910_249056_A7CB8FD6 X-CRM114-Status: UNSURE ( 7.28 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.0 (/) Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen , Liam Girdwood , Takashi Iwai , Tushar Behera , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Jaroslav Kysela , linux-rockchip@lists.infradead.org, Jarkko Nikula , Dylan Reid , linux-arm-kernel@lists.infradead.org, Caesar Wang X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To fix pop noise when shutdown,the pop noise during shutdown is the pmic cutoff power of codec without any notice. Signed-off-by: jay.xu Signed-off-by: zhengxing Signed-off-by: Caesar Wang Serien-cc: linux-kernel@vger.kernel.org Serien-cc: devicetree@vger.kernel.org Serien-cc: dianders@chromium.org --- Changes in v2: - remove the dev_info(..) - fix the comment style - add the max98090_i2c_shutdown() in remove() fuction sound/soc/codecs/max98090.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index b112b1c..e59013a 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -2607,10 +2607,26 @@ err_enable: static int max98090_i2c_remove(struct i2c_client *client) { + max98090_i2c_shutdown(client); snd_soc_unregister_codec(&client->dev); return 0; } +static void max98090_i2c_shutdown(struct i2c_client *i2c) +{ + struct max98090_priv *max98090 = dev_get_drvdata(&i2c->dev); + + /* + * Enable volume smoothing, disable zero cross. This will cause + * a quick 40ms ramp to mute on shutdown. + */ + regmap_write(max98090->regmap, + M98090_REG_LEVEL_CONTROL, M98090_VSENN_MASK); + regmap_write(max98090->regmap, + M98090_REG_DEVICE_SHUTDOWN, 0x00); + msleep(40); +} + #ifdef CONFIG_PM static int max98090_runtime_resume(struct device *dev) { @@ -2697,6 +2713,7 @@ static struct i2c_driver max98090_i2c_driver = { }, .probe = max98090_i2c_probe, .remove = max98090_i2c_remove, + .shutdown = max98090_i2c_shutdown, .id_table = max98090_i2c_id, };