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[2604:1380:40f1:3f00::1]) by mx.google.com with ESMTPS id y5-20020a655285000000b005cf0abf8e79si10432245pgp.275.2024.01.16.01.40.59 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jan 2024 01:40:59 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-27189-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=hzZKRWMr; spf=pass (google.com: domain of linux-kernel+bounces-27189-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-27189-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id 3CE16B225EA for ; Tue, 16 Jan 2024 09:40:17 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CDBBE13AC3; Tue, 16 Jan 2024 09:39:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hzZKRWMr" Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E99CF12B9D; Tue, 16 Jan 2024 09:39:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8CFEFC43394; Tue, 16 Jan 2024 09:39:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1705397981; bh=N8c8yQ8JoVaZ43ekrgFMJaI6nSmiX70JukNaBce+F1M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hzZKRWMrHhV/16BojQ69j2BghzEVFFRdYyUQsp9ne6dQpadmkTlTbx6LxBT483wRm xDA1RCjOqZqOeb8D7WPBMXeUmEr/3z6qzsMYhBvuz2TZ2lsgL1xwFomapPg2QcNnan OTGBQem22S3QJ5C0gZUdmpIyeIdd8fsUi05I3wt0MqJc1xJpEQTCkg8UI11YOx60LI O4esH6VYlFUFOX1I57ZFeeC9ma3NFmTyINVkDozvRZY2rSqV595p/9q7iS8mkE4UMb KAnyQ0VYAmhNSRGjcVucA72rkvPu4TFzgB3HhyoB/c/InpqjOQhDMRFIgNrqKlmQ0G uoMcWnfQEsClg== Received: from johan by xi.lan with local (Exim 4.96.2) (envelope-from ) id 1rPfv6-00053T-0r; Tue, 16 Jan 2024 10:39:44 +0100 From: Johan Hovold To: Mark Brown Cc: Srinivas Kandagatla , Banajit Goswami , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , alsa-devel@alsa-project.org, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH 2/7] ASoC: codecs: lpass-wsa-macro: fix compander volume hack Date: Tue, 16 Jan 2024 10:38:58 +0100 Message-ID: <20240116093903.19403-3-johan+linaro@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240116093903.19403-1-johan+linaro@kernel.org> References: <20240116093903.19403-1-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The LPASS WSA macro codec driver is updating the digital gain settings behind the back of user space on DAPM events if companding has been enabled. As compander control is exported to user space, this can result in the digital gain setting being incremented (or decremented) every time the sound server is started and the codec suspended depending on what the UCM configuration looks like. Soon enough playback will become distorted (or too quiet). This is specifically a problem on the Lenovo ThinkPad X13s as this bypasses the limit for the digital gain setting that has been set by the machine driver. Fix this by simply dropping the compander gain hack. If someone cares about modelling the impact of the compander setting this can possibly be done by exporting it as a volume control later. Fixes: 2c4066e5d428 ("ASoC: codecs: lpass-wsa-macro: add dapm widgets and route") Cc: stable@vger.kernel.org # 5.11 Cc: Srinivas Kandagatla Signed-off-by: Johan Hovold --- sound/soc/codecs/lpass-wsa-macro.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c index 7e21cec3c2fb..7de221464d47 100644 --- a/sound/soc/codecs/lpass-wsa-macro.c +++ b/sound/soc/codecs/lpass-wsa-macro.c @@ -1583,8 +1583,6 @@ static int wsa_macro_enable_interpolator(struct snd_soc_dapm_widget *w, struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); u16 gain_reg; u16 reg; - int val; - int offset_val = 0; struct wsa_macro *wsa = snd_soc_component_get_drvdata(component); if (w->shift == WSA_MACRO_COMP1) { @@ -1623,11 +1621,7 @@ static int wsa_macro_enable_interpolator(struct snd_soc_dapm_widget *w, CDC_WSA_RX1_RX_PATH_MIX_SEC0, CDC_WSA_RX_PGA_HALF_DB_MASK, CDC_WSA_RX_PGA_HALF_DB_ENABLE); - offset_val = -2; } - val = snd_soc_component_read(component, gain_reg); - val += offset_val; - snd_soc_component_write(component, gain_reg, val); wsa_macro_config_ear_spkr_gain(component, wsa, event, gain_reg); break; @@ -1654,10 +1648,6 @@ static int wsa_macro_enable_interpolator(struct snd_soc_dapm_widget *w, CDC_WSA_RX1_RX_PATH_MIX_SEC0, CDC_WSA_RX_PGA_HALF_DB_MASK, CDC_WSA_RX_PGA_HALF_DB_DISABLE); - offset_val = 2; - val = snd_soc_component_read(component, gain_reg); - val += offset_val; - snd_soc_component_write(component, gain_reg, val); } wsa_macro_config_ear_spkr_gain(component, wsa, event, gain_reg); -- 2.41.0