From nobody Thu Apr 2 22:05:28 2026 Received: from out-185.mta0.migadu.com (out-185.mta0.migadu.com [91.218.175.185]) (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 AD838272E63 for ; Thu, 12 Feb 2026 22:03:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.185 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770933782; cv=none; b=qd5Wg/cnOild5mAMPTjQ1Gtjjv6DjuIE2ykosLFpwIR1LqzxP8Jfr9N4I+ZijkY4VI9zlwd0FXhQK9a/+x2QpSoUIYSmnV6fTbN3UFjaCzOWNuZxncBCbBFJUDgHlDGfO0JvcXO5lYbYEvKoMdw5duDI7NqZXpFnhj9t9SCWoz8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770933782; c=relaxed/simple; bh=UhTgkClA8DrE1VUZht4HZslMU7zvsdYDtr8cdoNXOMg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bR/tHHPkGA4I9zsUlR1/p1BMM8r4dLaA0YB+7esZTUZ5J0LGA6jbnZJfTy248F2sv0Zn4hpiAJKlSwO3CcA70Sbt3Qc3Ds86niv+wrDaF9YHaW26OqDqN816ephLlUTTD9SxsECw0aTHfa10Gj2ur5Gg+o6aeR4ibD6QCWIw8t0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=udVlwCDU; arc=none smtp.client-ip=91.218.175.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="udVlwCDU" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1770933778; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kiKqhMtBmknD+tTrA/WQJsCqTcQeTsPRiZUJWL/ZcL8=; b=udVlwCDUz9kCcK6VN6KSV4fnAvukZ4jI8O/fq9zOohVjBZTgCD4AfnKBdCHWlDRwRVQBMb dMUqUTE448KgVSoaLyfaX2s3r7u3EOMi35sYFUu7Vr2Iwyjcn5NTV5cECHtxZtex3i8xZQ geOrtoScsrim1t8+YlB7gzkxmD30xi0= From: Denis Benato To: linux-kernel@vger.kernel.org Cc: platform-driver-x86@vger.kernel.org, "Hans de Goede" , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , "Luke D . Jones" , "Mateusz Schyboll" , "Denis Benato" , Denis Benato Subject: [PATCH 1/2] platform/x86: asus-wmi: adjust screenpad power/brightness handling Date: Thu, 12 Feb 2026 23:02:51 +0100 Message-ID: <20260212220252.1526337-2-denis.benato@linux.dev> In-Reply-To: <20260212220252.1526337-1-denis.benato@linux.dev> References: <20260212220252.1526337-1-denis.benato@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Fix illogical screen off control by hardcoding 0 and 1 depending on the requested brightness and also do not rely on the last screenpad power state to issue screen brightness commands. Signed-off-by: Denis Benato Signed-off-by: Luke Jones --- drivers/platform/x86/asus-wmi.c | 34 +++++++++++++-------------------- 1 file changed, 13 insertions(+), 21 deletions(-) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wm= i.c index 0775fadedd10..4130dae37e15 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -4254,32 +4254,24 @@ static int read_screenpad_brightness(struct backlig= ht_device *bd) =20 static int update_screenpad_bl_status(struct backlight_device *bd) { - struct asus_wmi *asus =3D bl_get_data(bd); - int power, err =3D 0; - u32 ctrl_param; + int err =3D 0; + u32 ctrl_param =3D bd->props.brightness; =20 - power =3D read_screenpad_backlight_power(asus); - if (power < 0) - return power; + if (ctrl_param >=3D 0 && bd->props.power) { + err =3D asus_wmi_set_devstate(ASUS_WMI_DEVID_SCREENPAD_POWER, 1, NULL); + if (err < 0) + return err; =20 - if (bd->props.power !=3D power) { - if (power !=3D BACKLIGHT_POWER_ON) { - /* Only brightness > 0 can power it back on */ - ctrl_param =3D asus->driver->screenpad_brightness - ASUS_SCREENPAD_BRIG= HT_MIN; - err =3D asus_wmi_set_devstate(ASUS_WMI_DEVID_SCREENPAD_LIGHT, - ctrl_param, NULL); - } else { - err =3D asus_wmi_set_devstate(ASUS_WMI_DEVID_SCREENPAD_POWER, 0, NULL); - } - } else if (power =3D=3D BACKLIGHT_POWER_ON) { - /* Only set brightness if powered on or we get invalid/unsync state */ - ctrl_param =3D bd->props.brightness + ASUS_SCREENPAD_BRIGHT_MIN; err =3D asus_wmi_set_devstate(ASUS_WMI_DEVID_SCREENPAD_LIGHT, ctrl_param= , NULL); + if (err < 0) + return err; } =20 - /* Ensure brightness is stored to turn back on with */ - if (err =3D=3D 0) - asus->driver->screenpad_brightness =3D bd->props.brightness + ASUS_SCREE= NPAD_BRIGHT_MIN; + if (!bd->props.power) { + err =3D asus_wmi_set_devstate(ASUS_WMI_DEVID_SCREENPAD_POWER, 0, NULL); + if (err < 0) + return err; + } =20 return err; } --=20 2.53.0