From nobody Sat Nov 23 04:48:00 2024 Received: from mailout03.agenturserver.de (mailout03.agenturserver.de [153.92.196.166]) (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 933A61F81AB; Thu, 14 Nov 2024 11:01:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=153.92.196.166 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731582097; cv=none; b=JPDQ/ounW5SNTWFSOoukS13jKWlk4VJmmImT8W5lE9sQsyxktjwKoftVLusVCkE5opJf2Y0ql/SKyTg12m2DqWrCHAv7SQQ2k5qa+aJ2MAdyyo5IFK5KhidRp5s12eCbRgxSiR3zh6AsMyL2g5M7vfbQ7xPwLsE88xt6Sclql7Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731582097; c=relaxed/simple; bh=1LqwXNRMQeQh9/IOT33Rg0yODwYJ/vaPYLyvgtvHhQs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ihMZlcm5Nmwjo4ANaYLUbwa80uZ3rGgli2RVO/KKPqoHppiBq2mz4VttzHVPRvleCyqSlBSGxBrF2wyeecHPulVN4GbxaMkb2yH2jjN+402I3/UN1kBeUy4NqOh+L0B9dY6fYfjg+Rotsviu8Pe2+MRF4TtVTG2Yv9mI1bW5Q34= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=merzmedtech.de; spf=pass smtp.mailfrom=merzmedtech.de; dkim=pass (2048-bit key) header.d=merzmedtech.de header.i=@merzmedtech.de header.b=OmZE+v/E; dkim=pass (1024-bit key) header.d=merzmedtech.de header.i=@merzmedtech.de header.b=Kg6nndgZ; arc=none smtp.client-ip=153.92.196.166 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=merzmedtech.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=merzmedtech.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=merzmedtech.de header.i=@merzmedtech.de header.b="OmZE+v/E"; dkim=pass (1024-bit key) header.d=merzmedtech.de header.i=@merzmedtech.de header.b="Kg6nndgZ" Received: from mail03.agenturserver.de (mail03.internal [192.168.51.40]) by mailout03.agenturserver.de (Postfix) with ESMTP id 0A7C75A13; Thu, 14 Nov 2024 12:01:34 +0100 (CET) Received: from XXX.XXX.XXX.XXX (XXXXX.XX [XXX.XXX.XXX.XXX]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: h.v.raven@merzmedtech.de) by mail.agenturserver.de (Postfix) with ESMTPSA id 681636136B; Thu, 14 Nov 2024 12:01:33 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=merzmedtech.de; s=agenturserver2048; t=1731582093; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yynhzXzdtIkw3UZnXZUYTxOA8YlxAS9zm3bzoAWv2KI=; b=OmZE+v/E6zKZOGyH8aBu06//HZ/E1/R72Z5s5wQRunwyZcqtwWH/p9vWyC1PtaACbyOTRu 9vmxfbPEshxj+A79zyLEG4vIEzplmCq47NykaAaMoFnZTnDElmONLIaGSsY7gdY4o8vBcI Ep8tr1rL4od+NYFAZ/tJLR8/1bWxMWL014YVthT/4onVwfYCX1FmECS0TRKmdebPE3Pglz nqf9tprmy0vSZJCCG4vtLJM294piC2VNmwq6UAkkM4YkpBQEiXXXKmpHzXVFNBSuA5ZAgx VBg1f0KsBk/jKlwux9nAmUKPZNv8hwB7xJSlf/yadkJeG61zaq8WQoqNpCiiMg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=merzmedtech.de; s=agenturserver; t=1731582093; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yynhzXzdtIkw3UZnXZUYTxOA8YlxAS9zm3bzoAWv2KI=; b=Kg6nndgZOGytNRlT8i1TUAxHbR7T7kTh2jNkBb6FdBto9VjJ7bb9C+jF762rJKzlqrU9Nc XA8UfZ+4m6W3ohLCB4c8A0zsqltMQCG+KJFXCKlEtsBaKkf9eTlbugqMYtHurKsNBUHgQs MkZ8E+Fc3wSd4i4TaHOsU3qZjIMtk6Y= From: "Hendrik v. Raven" Date: Thu, 14 Nov 2024 12:01:25 +0100 Subject: [PATCH v2 1/2] ASoc: simple-mux: add idle-state support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241114-simple-mux-idle-state-v2-1-a30cb37d2be2@merzmedtech.de> References: <20241114-simple-mux-idle-state-v2-0-a30cb37d2be2@merzmedtech.de> In-Reply-To: <20241114-simple-mux-idle-state-v2-0-a30cb37d2be2@merzmedtech.de> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexandre Belloni Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, "Hendrik v. 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Allow overriding this behaviour by specifying an optional idle-state. This state is used whenever the mux is powered down, only switching to the selected state on power up. If unspecified it defaults to as-is, maintaining the previous behaviour. Signed-off-by: Hendrik v. Raven --- Changes in v2: - fix nullpointer dereference in simple_mux_event --- sound/soc/codecs/simple-mux.c | 39 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/simple-mux.c b/sound/soc/codecs/simple-mux.c index 240af0563283e5a9dd720d51a2cefd22bd241faa..3906964401557db7799a2e1a8dd= 8abd445e841f4 100644 --- a/sound/soc/codecs/simple-mux.c +++ b/sound/soc/codecs/simple-mux.c @@ -6,6 +6,7 @@ =20 #include #include +#include #include #include =20 @@ -16,6 +17,7 @@ struct simple_mux { struct gpio_desc *gpiod_mux; unsigned int mux; const char *mux_texts[MUX_TEXT_SIZE]; + unsigned int idle_state; struct soc_enum mux_enum; struct snd_kcontrol_new mux_mux; struct snd_soc_dapm_widget mux_widgets[MUX_WIDGET_SIZE]; @@ -57,6 +59,9 @@ static int simple_mux_control_put(struct snd_kcontrol *kc= ontrol, =20 priv->mux =3D ucontrol->value.enumerated.item[0]; =20 + if (priv->idle_state !=3D MUX_IDLE_AS_IS && dapm->bias_level < SND_SOC_BI= AS_PREPARE) + return 0; + gpiod_set_value_cansleep(priv->gpiod_mux, priv->mux); =20 return snd_soc_dapm_mux_update_power(dapm, kcontrol, @@ -75,10 +80,33 @@ static unsigned int simple_mux_read(struct snd_soc_comp= onent *component, static const struct snd_kcontrol_new simple_mux_mux =3D SOC_DAPM_ENUM_EXT("Muxer", simple_mux_enum, simple_mux_control_get, simpl= e_mux_control_put); =20 +static int simple_mux_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *c =3D snd_soc_dapm_to_component(w->dapm); + struct simple_mux *priv =3D snd_soc_component_get_drvdata(c); + + if (priv->idle_state !=3D MUX_IDLE_AS_IS) { + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + gpiod_set_value_cansleep(priv->gpiod_mux, priv->mux); + break; + case SND_SOC_DAPM_POST_PMD: + gpiod_set_value_cansleep(priv->gpiod_mux, priv->idle_state); + break; + default: + break; + } + } + + return 0; +} + static const struct snd_soc_dapm_widget simple_mux_dapm_widgets[MUX_WIDGET= _SIZE] =3D { SND_SOC_DAPM_INPUT("IN1"), SND_SOC_DAPM_INPUT("IN2"), - SND_SOC_DAPM_MUX("MUX", SND_SOC_NOPM, 0, 0, &simple_mux_mux), // see simp= le_mux_probe() + SND_SOC_DAPM_MUX_E("MUX", SND_SOC_NOPM, 0, 0, &simple_mux_mux, // see sim= ple_mux_probe() + simple_mux_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_OUTPUT("OUT"), }; =20 @@ -93,6 +121,7 @@ static int simple_mux_probe(struct platform_device *pdev) struct device *dev =3D &pdev->dev; struct device_node *np =3D dev->of_node; struct simple_mux *priv; + int ret; =20 priv =3D devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -121,6 +150,14 @@ static int simple_mux_probe(struct platform_device *pd= ev) /* Overwrite text ("Input 1", "Input 2") if property exists */ of_property_read_string_array(np, "state-labels", priv->mux_texts, MUX_TE= XT_SIZE); =20 + ret =3D of_property_read_u32(np, "idle-state", &priv->idle_state); + if (ret < 0) { + priv->idle_state =3D MUX_IDLE_AS_IS; + } else if (priv->idle_state !=3D MUX_IDLE_AS_IS && priv->idle_state >=3D = 2) { + dev_err(dev, "invalid idle-state %u\n", priv->idle_state); + return -EINVAL; + } + /* switch to use priv data instead of default */ priv->mux_enum.texts =3D priv->mux_texts; priv->mux_mux.private_value =3D (unsigned long)&priv->mux_enum; --=20 2.47.0 From nobody Sat Nov 23 04:48:00 2024 Received: from mailout04.agenturserver.de (mailout04.agenturserver.de [185.15.192.35]) (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 0B94C1F7799; 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bh=1r/C7JDOyrIOwKHw39KLfomSLJd9p0Mbsxy76eb7RGI=; b=by9pYlkvTd4sO8D9rkKKiS5DMC96dTPlEeA37+Ia0RN/swvFvyVQXIKGduNWnBrEao1P6m 0wpHCgX7jF9waPxwM8TOnRmyC7oVB4F/PIZK5pPDcQFqDBPkSDQw7oOr3LRdb3XAObN+Ze 0OBE384NqiD/orF0+VE5In5POi4tw6U= From: "Hendrik v. Raven" Date: Thu, 14 Nov 2024 12:01:26 +0100 Subject: [PATCH v2 2/2] ASoC: dt-bindings: simple-mux: add idle-state property Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241114-simple-mux-idle-state-v2-2-a30cb37d2be2@merzmedtech.de> References: <20241114-simple-mux-idle-state-v2-0-a30cb37d2be2@merzmedtech.de> In-Reply-To: <20241114-simple-mux-idle-state-v2-0-a30cb37d2be2@merzmedtech.de> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexandre Belloni Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, "Hendrik v. 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This can be undesirable in some cases, for example when a mechanical relais is used. Adds "idle-state" property from the mux controller to select the output state to be used when the mux is powered down. Signed-off-by: Hendrik v. Raven --- Changes in v2: - No changes --- Documentation/devicetree/bindings/sound/simple-audio-mux.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml = b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml index 194ac1d4f4f5f40a9bc44e8cd0acbf2eab708365..9b1bda4852e160618ffd349d2f7= c90645d5b3e03 100644 --- a/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml +++ b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml @@ -29,6 +29,10 @@ properties: $ref: /schemas/types.yaml#/definitions/string-array maxItems: 2 =20 + idle-state: + description: If present specifies the state when the mux is powered do= wn + $ref: /schemas/mux/mux-controller.yaml#/properties/idle-state + sound-name-prefix: true =20 required: @@ -43,4 +47,5 @@ examples: compatible =3D "simple-audio-mux"; mux-gpios =3D <&gpio 3 0>; state-labels =3D "Label_A", "Label_B"; + idle-state =3D <0>; }; --=20 2.47.0