{"id":2230094,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2230094/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260429074356.118420-10-herve.codina@bootlin.com/","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/1.1/projects/42/?format=json","name":"Linux GPIO development","link_name":"linux-gpio","list_id":"linux-gpio.vger.kernel.org","list_email":"linux-gpio@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260429074356.118420-10-herve.codina@bootlin.com>","date":"2026-04-29T07:43:45","name":"[v2,09/17] ASoC: simple-amplifier: Introduce support for gpio-audio-amp","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"90e40d1731ee2801442ea0396eb1c9414a4f9521","submitter":{"id":81983,"url":"http://patchwork.ozlabs.org/api/1.1/people/81983/?format=json","name":"Herve Codina","email":"herve.codina@bootlin.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260429074356.118420-10-herve.codina@bootlin.com/mbox/","series":[{"id":502009,"url":"http://patchwork.ozlabs.org/api/1.1/series/502009/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/list/?series=502009","date":"2026-04-29T07:43:41","name":"ASoC: Add support for GPIOs driven amplifiers","version":2,"mbox":"http://patchwork.ozlabs.org/series/502009/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230094/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230094/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=XLEEuTe/;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; 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c=relaxed/relaxed; d=bootlin.com; s=dkim;\n\tt=1777448672; h=from:subject:date:message-id:to:cc:mime-version:\n\t content-transfer-encoding:in-reply-to:references;\n\tbh=luaVjD7OW5gT2xj48rg1oNvZJhOyOblcokl5JE/AWQY=;\n\tb=XLEEuTe/IjF0b/Y4jPrtn+/VwYvruqQ5l8nZg4Dqe2tQSgkChhlw3CCC+7JWa2yQkiRbiA\n\tFgt8RtLTOpDklcO4DGI4+pm6K8py9EFbjvNIxanizBpSmU28ptVMKx1Ae2fHuBzKqXMFT2\n\tZd0HfrRJRF7eGr0OISC9JwSHFbGV76G5q1gpiRqxtDLZ/GrmQ0Ehc2a5scJ/UygQ7kK/rO\n\tKpgg0vPKZEQ42z4dIt4MSoMeM3B+F7tEkhxO3RbOeCPxzZ1C56Gu46RBgl52WxyzBTvItQ\n\tNKQ67oKSsrToRNhOHBuAjX9GBnM6vVs+TlUikVd1+sXskZf1JMXSP5+8Fn27gA==","From":"Herve Codina ","To":"Herve Codina ,\n\tBartosz Golaszewski ,\n\tLinus Walleij ,\n\tLiam Girdwood ,\n\tMark Brown ,\n\tRob Herring ,\n\tKrzysztof Kozlowski ,\n\tConor Dooley ,\n\tSaravana Kannan ,\n\tJaroslav Kysela ,\n\tTakashi Iwai ","Cc":"linux-sound@vger.kernel.org,\n\tlinux-gpio@vger.kernel.org,\n\tdevicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tChristophe Leroy ,\n\tThomas Petazzoni ","Subject":"[PATCH v2 09/17] ASoC: simple-amplifier: Introduce support for\n gpio-audio-amp","Date":"Wed, 29 Apr 2026 09:43:45 +0200","Message-ID":"<20260429074356.118420-10-herve.codina@bootlin.com>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260429074356.118420-1-herve.codina@bootlin.com>","References":"<20260429074356.118420-1-herve.codina@bootlin.com>","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Last-TLS-Session-Version":"TLSv1.3"},"content":"Improve the simple-amplifier introducing preliminary support for\ngpio-audio-amp.\n\nThose amplifiers are amplifiers driven by gpios.\n\nThis support introduction doesn't handle any GPIO yet but introduces\nthe compatible strings and the related DAPM table.\n\nTwo gpio-audio-amp are available: A mono and a stereo version.\n\nThe mono version has only one audio channel and gpio settings impact\nfeatures such as the gain or mute of this sole channel.\n\nThe stereo version has two channels (left and right). Gpio settings\nimpact both channels in the same manner and at the same time. For\ninstance, the gain setting set the gain of both channels as well as\nthe mute setting mutes both channels.\n\nSigned-off-by: Herve Codina \n---\n sound/soc/codecs/simple-amplifier.c | 54 +++++++++++++++++++++++++++++\n 1 file changed, 54 insertions(+)","diff":"diff --git a/sound/soc/codecs/simple-amplifier.c b/sound/soc/codecs/simple-amplifier.c\nindex a70f70566340..ab4fa074603e 100644\n--- a/sound/soc/codecs/simple-amplifier.c\n+++ b/sound/soc/codecs/simple-amplifier.c\n@@ -4,6 +4,7 @@\n * Author: Jerome Brunet \n */\n \n+#include \n #include \n #include \n #include \n@@ -12,6 +13,9 @@\n #include \n \n struct simple_amp_data {\n+\tunsigned int supports;\n+#define SIMPLE_AUDIO_SUPPORT_PGA\t\tBIT(0)\n+\n \tconst struct snd_soc_dapm_widget *dapm_widgets;\n \tunsigned int num_dapm_widgets;\n \tconst struct snd_soc_dapm_route *dapm_routes;\n@@ -66,6 +70,38 @@ static const struct snd_soc_dapm_route simple_amp_dapm_routes[] = {\n \t{ \"OUTR\", NULL, \"DRV\" },\n };\n \n+static const struct snd_soc_dapm_widget simple_amp_mono_pga_dapm_widgets[] = {\n+\tSND_SOC_DAPM_INPUT(\"IN\"),\n+\tSND_SOC_DAPM_OUTPUT(\"OUT\"),\n+\tSND_SOC_DAPM_PGA_E(\"PGA\", SND_SOC_NOPM, 0, 0, NULL, 0, simple_amp_power_event,\n+\t\t\t (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD)),\n+\tSND_SOC_DAPM_REGULATOR_SUPPLY(\"vdd\", 0, 0),\n+};\n+\n+static const struct snd_soc_dapm_route simple_amp_mono_pga_dapm_routes[] = {\n+\t{ \"PGA\", NULL, \"IN\" },\n+\t{ \"PGA\", NULL, \"vdd\" },\n+\t{ \"OUT\", NULL, \"PGA\" },\n+};\n+\n+static const struct snd_soc_dapm_widget simple_amp_stereo_pga_dapm_widgets[] = {\n+\tSND_SOC_DAPM_INPUT(\"INL\"),\n+\tSND_SOC_DAPM_INPUT(\"INR\"),\n+\tSND_SOC_DAPM_OUTPUT(\"OUTL\"),\n+\tSND_SOC_DAPM_OUTPUT(\"OUTR\"),\n+\tSND_SOC_DAPM_PGA_E(\"PGA\", SND_SOC_NOPM, 0, 0, NULL, 0, simple_amp_power_event,\n+\t\t\t (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD)),\n+\tSND_SOC_DAPM_REGULATOR_SUPPLY(\"vdd\", 0, 0),\n+};\n+\n+static const struct snd_soc_dapm_route simple_amp_stereo_pga_dapm_routes[] = {\n+\t{ \"PGA\", NULL, \"INL\" },\n+\t{ \"PGA\", NULL, \"INR\" },\n+\t{ \"PGA\", NULL, \"vdd\" },\n+\t{ \"OUTL\", NULL, \"PGA\" },\n+\t{ \"OUTR\", NULL, \"PGA\" },\n+};\n+\n static int simple_amp_add_basic_dapm(struct snd_soc_component *component)\n {\n \tstruct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);\n@@ -133,9 +169,27 @@ static const struct simple_amp_data simple_audio_amplifier_data = {\n \t.num_dapm_routes\t= ARRAY_SIZE(simple_amp_dapm_routes),\n };\n \n+static const struct simple_amp_data simple_audio_mono_pga_data = {\n+\t.supports\t\t= SIMPLE_AUDIO_SUPPORT_PGA,\n+\t.dapm_widgets\t\t= simple_amp_mono_pga_dapm_widgets,\n+\t.num_dapm_widgets\t= ARRAY_SIZE(simple_amp_mono_pga_dapm_widgets),\n+\t.dapm_routes\t\t= simple_amp_mono_pga_dapm_routes,\n+\t.num_dapm_routes\t= ARRAY_SIZE(simple_amp_mono_pga_dapm_routes),\n+};\n+\n+static const struct simple_amp_data simple_audio_stereo_pga_data = {\n+\t.supports\t\t= SIMPLE_AUDIO_SUPPORT_PGA,\n+\t.dapm_widgets\t\t= simple_amp_stereo_pga_dapm_widgets,\n+\t.num_dapm_widgets\t= ARRAY_SIZE(simple_amp_stereo_pga_dapm_widgets),\n+\t.dapm_routes\t\t= simple_amp_stereo_pga_dapm_routes,\n+\t.num_dapm_routes\t= ARRAY_SIZE(simple_amp_stereo_pga_dapm_routes),\n+};\n+\n static const struct of_device_id simple_amp_ids[] = {\n \t{ .compatible = \"dioo,dio2125\",\t\t .data = &simple_audio_amplifier_data},\n \t{ .compatible = \"simple-audio-amplifier\", .data = &simple_audio_amplifier_data},\n+\t{ .compatible = \"gpio-audio-amp-mono\",\t .data = &simple_audio_mono_pga_data},\n+\t{ .compatible = \"gpio-audio-amp-stereo\", .data = &simple_audio_stereo_pga_data},\n \t{ }\n };\n MODULE_DEVICE_TABLE(of, simple_amp_ids);\n","prefixes":["v2","09/17"]}