From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B6B2C433EF for ; Mon, 6 Jun 2022 15:45:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241091AbiFFPpY (ORCPT ); Mon, 6 Jun 2022 11:45:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240970AbiFFPpM (ORCPT ); Mon, 6 Jun 2022 11:45:12 -0400 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAA321F1BE2 for ; Mon, 6 Jun 2022 08:45:09 -0700 (PDT) Received: from localhost.localdomain (85-222-111-42.dynamic.chello.pl [85.222.111.42]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: lukma@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 4789D83E63; Mon, 6 Jun 2022 17:45:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1654530307; bh=KHCCpJWpvoD0Y/WD41sZEKMPbIOi11fqmo/ZGOG53OU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jpndVbWRhRsEaeapXjcuWY7rbEo8LJdxnGbFRFrBB8x3+IO0K2f/V8Y8kq3HtXO0K O8BCQSFbOcUrAChV0FKNoQKCHRhwYBVokwpT2Z0i2pgy305iIDb6szG2XkpO9EzR6B dI9MzJp3HQ0BDTVi1IZUdDbcm9qQOnVUAr5yJ++GcwBz9LU9/OMpJPxUgBoO5HpdQ/ fXnC6gj683X3Qd8VHonzVmqqgExOVUukvxv29H48fdhdyFgweYNjIVe5y6iHrofVQZ ser+7OOq2kJh8l6xEWe1P1Hc/m5GWY05yzA9rUdUAqyysCfbsAXV4Sdv5Zz444EYeo wrer/YmJNihig== From: Lukasz Majewski To: Liam Girdwood , Mark Brown Cc: linux-kernel@vger.kernel.org, patches@opensource.cirrus.com, alsa-devel@alsa-project.org, Takashi Iwai , Jaroslav Kysela , Lukasz Majewski Subject: [PATCH 3/3] ASoC: wm8940: Mute also the speaker output Date: Mon, 6 Jun 2022 17:44:41 +0200 Message-Id: <20220606154441.20848-3-lukma@denx.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220606154441.20848-1-lukma@denx.de> References: <20220606154441.20848-1-lukma@denx.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Without this change the BTL speaker produces some "distortion" noise when test program (speaker-test -t waw) is ended with ctrl+c. As our design uses speaker outputs to drive BTL speaker, it was necessary to also mute the speaker via the codec internal WM8940_SPKVOL register with setting WM8940_SPKMUTE bit. Signed-off-by: Lukasz Majewski --- sound/soc/codecs/wm8940.c | 11 ++++++++++- sound/soc/codecs/wm8940.h | 3 +++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/wm8940.c b/sound/soc/codecs/wm8940.c index 6fb1c3780439..a8596f4089dd 100644 --- a/sound/soc/codecs/wm8940.c +++ b/sound/soc/codecs/wm8940.c @@ -465,9 +465,18 @@ static int wm8940_mute(struct snd_soc_dai *dai, int mute, int direction) { struct snd_soc_component *component = dai->component; u16 mute_reg = snd_soc_component_read(component, WM8940_DAC) & 0xffbf; + u16 spkvol_reg = snd_soc_component_read(component, WM8940_SPKVOL); + int ret; - if (mute) + spkvol_reg &= ~WM8940_SPKMUTE; + if (mute) { mute_reg |= 0x40; + spkvol_reg |= WM8940_SPKMUTE; + } + + ret = snd_soc_component_write(component, WM8940_SPKVOL, spkvol_reg); + if (ret) + return ret; return snd_soc_component_write(component, WM8940_DAC, mute_reg); } diff --git a/sound/soc/codecs/wm8940.h b/sound/soc/codecs/wm8940.h index 0d4f53ada2e6..eb051ed29bb8 100644 --- a/sound/soc/codecs/wm8940.h +++ b/sound/soc/codecs/wm8940.h @@ -95,5 +95,8 @@ struct wm8940_setup_data { #define WM8940_OPCLKDIV_3 2 #define WM8940_OPCLKDIV_4 3 +/* Bit definitions */ +#define WM8940_SPKMUTE BIT(6) + #endif /* _WM8940_H */ -- 2.20.1