From nobody Thu Apr 2 15:36:27 2026 Received: from mail-lj1-f182.google.com (mail-lj1-f182.google.com [209.85.208.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D3FA3DBD7F for ; Wed, 4 Mar 2026 18:58:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772650693; cv=none; b=Eu/KWans9ngHi9l4ltqvggd3duHDdqMjol/s9VOSlJnuRxEjr4vuqZHeG4m634byDzmLxwvj3YcMHh7oZN/J1dsUvq6IK1YQnl+vcR3gBY1wGR2UBlnZb+JNUe2IzgiNDfsw1PEr/kt/K7nMRD6fMooDNeDnIfyoofc4lss9Og8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772650693; c=relaxed/simple; bh=iAwN1L5RO+DcRjbiVg9nB/v71sR6G3TJGVFbQvAkWCY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=qIw+AEkurcse0WmLBf2FKLqjPtp5DAfBOCciCQO2shrdoDlNXx/wdCEhZDht4Q3k+paZ8GW1sg5a2NHeKng+lXlbnjowTb/wgu6fZV0GaVbkV010t84JGSgddWd422XJzrNh6fhGgB+W2m9sL1Z0c9SiVm6x+pIPK1NbQ7AG40s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Wo6JTunx; arc=none smtp.client-ip=209.85.208.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Wo6JTunx" Received: by mail-lj1-f182.google.com with SMTP id 38308e7fff4ca-389e71756d8so139022571fa.2 for ; Wed, 04 Mar 2026 10:58:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1772650688; x=1773255488; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=7KTN5RIw3jy7znvqFB96hO7oLoRvfbkutQBACbQ/WQc=; b=Wo6JTunxe4SklQRnE8CMfK4Txy8k7pXW7nr8TyTFoRB+VERRiwA9k2ts7l1C3GI1BF LKAhGQtzrrKfF86HyWFsVN0jKO+xEwrexA1J9oqOomUVpoTNl0Bu+5j1mt6SwdSXDLGN 4EkO186J2TUcC8KgbZLkxjrSI6/l4KSrVSUl+f3Db45T4lIRCWrTojjmRBC6wkv0CI7q gdcrqtpKUbmEg2hiGz7bqboyiw+nVTu2PitlwHMhnSZaJxIzztnGr+UvNui4qVlyEOPc PnX9CKP8LrOSqCksrEGmqgpEz3yXydSHz8P8TBAuDnHbhw9wur8iwpyeGHOjTJfcnWkk uPsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772650688; x=1773255488; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=7KTN5RIw3jy7znvqFB96hO7oLoRvfbkutQBACbQ/WQc=; b=THBg9gQnt26oR5UrNPgghTRP6r19hXRr2WRgXYCOnQU7Con4KqmiSeiAvKgJLKjrrj OkIeK9WHd735yKFspxzwhvusJM4jAlj3+nvmlKHJVy3kdCtMtYSnOEyeX3tRUuxyhiyf qZlMHF3zrymRFfGINf5sqkiccYxKN3oKStFGF1vPGXKRqLP9L+xlT7eHsZZqadrtIrhw foA/TAypaZq86m3RRbE3bD9ervy19J94VvYrrLZL+Y2RPc52Y5RCSJOwTMTF27wPqIUk mA+KUn3tDlQY8uR12tL8JwP4je8g919BBtjkK0YHnnMAZ5aqEuXhdw4NqL9WZmd7Hc41 WSPA== X-Forwarded-Encrypted: i=1; AJvYcCUo7N7/QSQCjjTRDCGJZckRVQ6MdIpNSUy3zBKAd4kV74Rt79jclk1sxl5J826Sh0e5I1c4/wY4IpdQuEg=@vger.kernel.org X-Gm-Message-State: AOJu0YyOvBnalrGLWgGCbHOImFGSd0ZO5q1zC3h17CmQjypc+/yuPwfS BOt5vX4B+CAWrYeHbPJxHTBNjwwytHtca3Wjt5yPhxIMtQ7QdL7t3aTO X-Gm-Gg: ATEYQzxt3DpTZAb3iBtjXf1oLcvg0F4vW8Sw6SayD9J1d7SAizaeaCuiOOWHjrXNB/1 ij9apndvnKjYEMU9yoXkrJTzxUYoj62Sug/GFQS8rFdb79Bo3+UHeVNquW0O8RNbuEERcmVjg4y 1snh0jONW1sR6DM5mYqUsiL/CRisPchMBnVvRFm8w3dAKpXdBSFpv2HG7mor9tGppMLbyWwOb7Z uZItFlzxo5QhhVc37+sKe+gvn1/0bfVmIREGRBbfsK+u3jXZfK9eTY554+aiWi1OZ7IC0mIKYj2 x13GJXqut85IEI2uk5V0nYh/fvH4Iyvuo0SI3G+48PkpJzjlnIpdk3TCuzgvMNgGPKpQP7yMjQe qCVon211rD11AZ/0vXFLgm8sw2QSmroWfCFm+y4ZO7zSKFMSPjqXhambd0xhyHGjoHvkE9EsUGg l5yu/4R0VQO22l X-Received: by 2002:a05:651c:987:b0:385:bab3:5ba7 with SMTP id 38308e7fff4ca-38a2c6af560mr21897461fa.19.1772650688249; Wed, 04 Mar 2026 10:58:08 -0800 (PST) Received: from xeon ([188.163.112.72]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a12a6ddd3bsm704985e87.0.2026.03.04.10.58.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2026 10:58:07 -0800 (PST) From: Svyatoslav Ryhel To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dmitry Torokhov , Lee Jones , Pavel Machek , Sebastian Reichel , Svyatoslav Ryhel , Ion Agorria , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v5 5/7] leds: Add driver for ASUS Transformer LEDs Date: Wed, 4 Mar 2026 20:57:49 +0200 Message-ID: <20260304185751.83494-6-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260304185751.83494-1-clamor95@gmail.com> References: <20260304185751.83494-1-clamor95@gmail.com> 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 From: Micha=C5=82 Miros=C5=82aw ASUS Transformer tablets have a green and an amber LED on both the Pad and the Dock. If both LEDs are enabled simultaneously, the emitted light will be yellow. Co-developed-by: Svyatoslav Ryhel Signed-off-by: Svyatoslav Ryhel Signed-off-by: Micha=C5=82 Miros=C5=82aw --- drivers/leds/Kconfig | 11 ++++ drivers/leds/Makefile | 1 + drivers/leds/leds-asus-transformer-ec.c | 79 +++++++++++++++++++++++++ 3 files changed, 91 insertions(+) create mode 100644 drivers/leds/leds-asus-transformer-ec.c diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 597d7a79c988..bda06dc145d7 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -120,6 +120,17 @@ config LEDS_OSRAM_AMS_AS3668 To compile this driver as a module, choose M here: the module will be called leds-as3668. =20 +config LEDS_ASUS_TRANSFORMER_EC + tristate "LED Support for Asus Transformer charging LED" + depends on LEDS_CLASS + depends on MFD_ASUS_TRANSFORMER_EC + help + This option enables support for charging indicator on + Asus Transformer's Pad and it's Dock. + + To compile this driver as a module, choose M here: the module + will be called leds-asus-transformer-ec. + config LEDS_AW200XX tristate "LED support for Awinic AW20036/AW20054/AW20072/AW20108" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 8fdb45d5b439..d5395c3f1124 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_AN30259A) +=3D leds-an30259a.o obj-$(CONFIG_LEDS_APU) +=3D leds-apu.o obj-$(CONFIG_LEDS_ARIEL) +=3D leds-ariel.o obj-$(CONFIG_LEDS_AS3668) +=3D leds-as3668.o +obj-$(CONFIG_LEDS_ASUS_TRANSFORMER_EC) +=3D leds-asus-transformer-ec.o obj-$(CONFIG_LEDS_AW200XX) +=3D leds-aw200xx.o obj-$(CONFIG_LEDS_AW2013) +=3D leds-aw2013.o obj-$(CONFIG_LEDS_BCM6328) +=3D leds-bcm6328.o diff --git a/drivers/leds/leds-asus-transformer-ec.c b/drivers/leds/leds-as= us-transformer-ec.c new file mode 100644 index 000000000000..3186038e3be7 --- /dev/null +++ b/drivers/leds/leds-asus-transformer-ec.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include +#include + +static void asus_ec_led_set_brightness_amber(struct led_classdev *led, + enum led_brightness brightness) +{ + const struct asusec_info *ec =3D dev_get_drvdata(led->dev->parent); + + if (brightness) + asus_ec_set_ctl_bits(ec, ASUSEC_CTL_LED_AMBER); + else + asus_ec_clear_ctl_bits(ec, ASUSEC_CTL_LED_AMBER); +} + +static void asus_ec_led_set_brightness_green(struct led_classdev *led, + enum led_brightness brightness) +{ + const struct asusec_info *ec =3D dev_get_drvdata(led->dev->parent); + + if (brightness) + asus_ec_set_ctl_bits(ec, ASUSEC_CTL_LED_GREEN); + else + asus_ec_clear_ctl_bits(ec, ASUSEC_CTL_LED_GREEN); +} + +static int asus_ec_led_probe(struct platform_device *pdev) +{ + struct asusec_info *ec =3D cell_to_ec(pdev); + struct device *dev =3D &pdev->dev; + struct led_classdev *amber_led, *green_led; + int ret; + + platform_set_drvdata(pdev, ec); + + amber_led =3D devm_kzalloc(dev, sizeof(*amber_led), GFP_KERNEL); + if (!amber_led) + return -ENOMEM; + + amber_led->name =3D devm_kasprintf(dev, GFP_KERNEL, "%s::amber", ec->name= ); + amber_led->max_brightness =3D 1; + amber_led->flags =3D LED_CORE_SUSPENDRESUME | LED_RETAIN_AT_SHUTDOWN; + amber_led->brightness_set =3D asus_ec_led_set_brightness_amber; + + ret =3D devm_led_classdev_register(dev, amber_led); + if (ret) + return dev_err_probe(dev, ret, "failed to register amber LED\n"); + + green_led =3D devm_kzalloc(dev, sizeof(*green_led), GFP_KERNEL); + if (!green_led) + return -ENOMEM; + + green_led->name =3D devm_kasprintf(dev, GFP_KERNEL, "%s::green", ec->name= ); + green_led->max_brightness =3D 1; + green_led->flags =3D LED_CORE_SUSPENDRESUME | LED_RETAIN_AT_SHUTDOWN; + green_led->brightness_set =3D asus_ec_led_set_brightness_green; + + ret =3D devm_led_classdev_register(dev, green_led); + if (ret) + return dev_err_probe(dev, ret, "failed to register green LED\n"); + + return 0; +} + +static struct platform_driver asus_ec_led_driver =3D { + .driver.name =3D "asus-transformer-ec-led", + .probe =3D asus_ec_led_probe, +}; +module_platform_driver(asus_ec_led_driver); + +MODULE_AUTHOR("Micha=C5=82 Miros=C5=82aw "); +MODULE_AUTHOR("Svyatoslav Ryhel "); +MODULE_DESCRIPTION("ASUS Transformer's charging LED driver"); +MODULE_LICENSE("GPL"); --=20 2.51.0