From nobody Wed Nov 27 23:33:51 2024 Received: from mail-pg1-f174.google.com (mail-pg1-f174.google.com [209.85.215.174]) (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 DA93A18E055; Mon, 7 Oct 2024 09:41:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728294093; cv=none; b=cXt4c5BWtaarGUXnrmF1fbwI6KtLhUVJGDhAkIWeYwydR+Ey+GVaOh273RhygqJmlN98B4QD+7lL6IXnoTWVHrdhPejpVB+cYwH8tzKwCTOX5XAuKSAT+u3E7Imo/cH5+/9aC7QHsv3PkCEPEpOwL65CsA3aLoRrHOdiXAKQBjo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728294093; c=relaxed/simple; bh=4xb1wWkcwTWIcA0EoZfaMm7dn+0ksqt5TMsQFiCRioY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=rsCnRFjnO5+TD/+H8zwUu+QfGsLE27a98lD43frCH4T6jS2sTfDS0yCMznbf1yfGMfMqHO+qAxUtyV09buqRWMcEnFX0wNX/CH7svQIEV2yCFJrJKfSr+gJWk940uI2n0Dxe/YzUcQvplJw9sp6OD1WlYU260Um6wkUTb/0Zytc= 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=LgzHT2GC; arc=none smtp.client-ip=209.85.215.174 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="LgzHT2GC" Received: by mail-pg1-f174.google.com with SMTP id 41be03b00d2f7-7d4fa972cbeso2933277a12.2; Mon, 07 Oct 2024 02:41:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728294091; x=1728898891; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=f/yUKosjh6HDH4+w6oxBH3n7uxN0rSo2dJt82OnzDEI=; b=LgzHT2GCA3ZgNSIttSPmU+6LJl12lZgNcs3lNDfdvPrvNhKp9W3Ebl5RrKygDNBW2D G9jkOppfM9yScSADQ3iYzXZ9vWC9dof/+qVxzSoN964SydYaeOwvi3SR83mD2c9dUp3R tDPzwKYHfzYH+l01UYZ9lmHggNz+8hudqSH0eKgThRzBW5y7kVlXQ/oPGXj6VUDQ9U3z q1puDQ92J2t2yGQvlrIO5QCmnLbf7LmoV+tS1nay3GD3J5oViISqUkNVHvWmsUslc88s DJ7Em0h2MLw+BxelLsjyYn9IqT7vV26K5WomGJfEIqc98M/WirRsCU9QMKxqgUaYTnog oFfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728294091; x=1728898891; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=f/yUKosjh6HDH4+w6oxBH3n7uxN0rSo2dJt82OnzDEI=; b=YLobdMItVfWZDJJYtxtqx1CeqtldA0UVRyxqarGPglFThp4Xxc58lLklhBFJfPMIUV Ot93ioe7PH1Af4yEtwPaafVL69+2uW9RdAQaT3dWaCKa6KJHicLmj97k7zLj3ohdWzUn On8edyIueWBkHipZd3ssEhki9oLGhnVraJMe3gWIBxkpF5TWWrcRvPtoRWgNATifC4lq d7V4DrbvZ7okw7gpaSv52p1v4GCjAWNU6ikXiCTekkikJi0wZufLl3JFoy+62lVPdD6q t4+keJgdpeATkuaoFZCgCJ/1mG0KAIr+UT55DKH4lU8zfRKGOSuvi28VM4cjPmcbihf7 TKmQ== X-Forwarded-Encrypted: i=1; AJvYcCVgZhjzNB4yGcm0XUFUS1oPso6nijw7i6cHSFL865psLKr21k0MPo7kc3bclz0FzFJ3mcXCU67kFXbGGEQ=@vger.kernel.org X-Gm-Message-State: AOJu0YzM1C0KQVTTVKaosq1oj0ueG+BTUPHGS4thmzGRQpj3duy3yefF EZIFLGPIPWyeorHzML0z6cDWODxgYPf0Dp9Jv5pxUmMZSB5k/A0XsDBMzIby X-Google-Smtp-Source: AGHT+IEBYnzq0PCmiNagBufWkdWis+CklbZD4eQtz4XdzS/5G2N8cw/w59cm9SlDnkE6No2YDRXIhg== X-Received: by 2002:a05:6a21:1643:b0:1d2:f039:4638 with SMTP id adf61e73a8af0-1d6dfa416f9mr19476697637.23.1728294091008; Mon, 07 Oct 2024 02:41:31 -0700 (PDT) Received: from localhost.localdomain (host95.181-12-202.telecom.net.ar. [181.12.202.95]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71df0d664aesm4145012b3a.148.2024.10.07.02.41.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Oct 2024 02:41:30 -0700 (PDT) From: Kurt Borja To: hdegoede@redhat.com, ilpo.jarvinen@linux.intel.com Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Kurt Borja Subject: [PATCH] Dell AWCC platform_profile support Date: Mon, 7 Oct 2024 06:33:26 -0300 Message-ID: <20241007093324.49631-3-kuurtb@gmail.com> X-Mailer: git-send-email 2.46.2 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 Content-Type: text/plain; charset="utf-8" This patch adds platform_profile support for Dell devices which implement User Selectable Thermal Tables (USTT) that are meant to be controlled by Alienware Command Center (AWCC). These devices may include newer Alienware M-Series, Alienware X-Series and Dell's G-Series. This patch, was tested by me on an Alienware x15 R1. It is suspected that Alienware Command Center manages thermal profiles through the WMI interface, specifically through a device with identifier \_SB_.AMW1.WMAX. This device was reverse engineered and the relevant functionality is documented here [1]. This driver interacts with this WMI device and thus is able to mimic AWCC's thermal profiles functionality through the platform_profile API. In consequence the user would be able to set and retrieve thermal profiles, which are just fan speed profiles. This driver was heavily inspired on inspur_platform_profile, special thanks. Notes: - Performance (FullSpeed) profile is a special profile which has it's own entry in the Firmware Settings of the Alienware x15 R1. It also changes the color of the F1 key. I suspect this behavior would be replicated in other X-Series or M-Series laptops. - G-Mode is a profile documented on [1] which mimics the behavior of FullSpeed mode but it does not have an entry on the Firmware Settings of the Alienware x15 R1, this may correspond to the G-Mode functionality on G-Series laptops (activated by a special button) but I cannot test it. I did not include this code in the driver as G-Mode causes unexpected behavior on X-Series laptops. Thanks for your time and patiente in advance. Regards, Kurt [1] https://gist.github.com/kuu-rt/b22328ff2b454be505387e2a38c61ee4 Signed-off-by: Kurt Borja --- drivers/platform/x86/dell/Kconfig | 9 + drivers/platform/x86/dell/Makefile | 1 + drivers/platform/x86/dell/dell-wmi-awcc.c | 204 ++++++++++++++++++++++ 3 files changed, 214 insertions(+) create mode 100644 drivers/platform/x86/dell/dell-wmi-awcc.c diff --git a/drivers/platform/x86/dell/Kconfig b/drivers/platform/x86/dell/= Kconfig index 68a49788a..20300ff98 100644 --- a/drivers/platform/x86/dell/Kconfig +++ b/drivers/platform/x86/dell/Kconfig @@ -27,6 +27,15 @@ config ALIENWARE_WMI zones on Alienware machines that don't contain a dedicated AlienFX USB MCU such as the X51 and X51-R2. =20 +config AWCC_PLATFORM_PROFILE + tristate "AWCC Platform Profile support" + depends on ACPI_WMI + select ACPI_PLATFORM_PROFILE + help + This driver provides platform_profile support for selecting thermal + profiles on Dell devices with User Selectable Thermal Tables, + controlled by AWCC's WMI interface. + config DCDBAS tristate "Dell Systems Management Base Driver" default m diff --git a/drivers/platform/x86/dell/Makefile b/drivers/platform/x86/dell= /Makefile index 79d60f1bf..bfef99580 100644 --- a/drivers/platform/x86/dell/Makefile +++ b/drivers/platform/x86/dell/Makefile @@ -23,4 +23,5 @@ obj-$(CONFIG_DELL_WMI_AIO) +=3D dell-wmi-aio.o obj-$(CONFIG_DELL_WMI_DESCRIPTOR) +=3D dell-wmi-descriptor.o obj-$(CONFIG_DELL_WMI_DDV) +=3D dell-wmi-ddv.o obj-$(CONFIG_DELL_WMI_LED) +=3D dell-wmi-led.o +obj-$(CONFIG_AWCC_PLATFORM_PROFILE) +=3D dell-wmi-awcc.o obj-$(CONFIG_DELL_WMI_SYSMAN) +=3D dell-wmi-sysman/ diff --git a/drivers/platform/x86/dell/dell-wmi-awcc.c b/drivers/platform/x= 86/dell/dell-wmi-awcc.c new file mode 100644 index 000000000..0837d1bc6 --- /dev/null +++ b/drivers/platform/x86/dell/dell-wmi-awcc.c @@ -0,0 +1,204 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * WMI driver for Dell's AWCC platform_profile + * + * Copyright (c) Kurt Borja + * + */ + +#include +#include +#include +#include +#include + +#define PROF_TO_ARG(mode) ((mode << 8) | 1) + +#define DELL_AWCC_GUID "A70591CE-A997-11DA-B012-B622A1EF5492" + +enum awcc_wmi_method { + AWCC_WMI_THERMAL_INFORMATION =3D 0x14, + AWCC_WMI_THERMAL_CONTROL =3D 0x15, +}; + +enum awcc_tmp_profile { + AWCC_TMP_PROFILE_BALANCED =3D 0xA0, + AWCC_TMP_PROFILE_BALANCED_PERFORMANCE =3D 0xA1, + AWCC_TMP_PROFILE_COOL =3D 0xA2, + AWCC_TMP_PROFILE_QUIET =3D 0xA3, + AWCC_TMP_PROFILE_PERFORMANCE =3D 0xA4, + AWCC_TMP_PROFILE_LOW_POWER =3D 0xA5, +}; + +struct awcc_wmi_priv { + struct wmi_device *wdev; + struct platform_profile_handler handler; +}; + +static int awcc_wmi_query(struct wmi_device *wdev, enum awcc_wmi_method me= thod, + u32 arg, u32 *res) +{ + struct acpi_buffer out =3D { ACPI_ALLOCATE_BUFFER, NULL }; + const struct acpi_buffer in =3D { sizeof(arg), &arg }; + union acpi_object *obj; + acpi_status status; + int ret =3D 0; + + status =3D wmidev_evaluate_method(wdev, 0x0, method, &in, &out); + + if (ACPI_FAILURE(status)) + return -EIO; + + obj =3D out.pointer; + if (!obj) + return -ENODATA; + + if (obj->type !=3D ACPI_TYPE_INTEGER) { + ret =3D -EINVAL; + goto out_free; + } + + if (obj->integer.value <=3D U32_MAX) + *res =3D (u32)obj->integer.value; + else + ret =3D -ERANGE; + +out_free: + kfree(obj); + + return ret; +} + +static int awcc_platform_profile_get(struct platform_profile_handler *ppro= f, + enum platform_profile_option *profile) +{ + struct awcc_wmi_priv *priv =3D + container_of(pprof, struct awcc_wmi_priv, handler); + + u32 res; + int ret; + + ret =3D awcc_wmi_query(priv->wdev, AWCC_WMI_THERMAL_INFORMATION, 0x0B, + &res); + + if (ret < 0) + return ret; + + if (res < 0) + return -EBADRQC; + + switch (res) { + case AWCC_TMP_PROFILE_LOW_POWER: + *profile =3D PLATFORM_PROFILE_LOW_POWER; + break; + case AWCC_TMP_PROFILE_QUIET: + *profile =3D PLATFORM_PROFILE_QUIET; + break; + case AWCC_TMP_PROFILE_BALANCED: + *profile =3D PLATFORM_PROFILE_BALANCED; + break; + case AWCC_TMP_PROFILE_BALANCED_PERFORMANCE: + *profile =3D PLATFORM_PROFILE_BALANCED_PERFORMANCE; + break; + case AWCC_TMP_PROFILE_PERFORMANCE: + *profile =3D PLATFORM_PROFILE_PERFORMANCE; + break; + default: + return -ENODATA; + } + + return 0; +} + +static int awcc_platform_profile_set(struct platform_profile_handler *ppro= f, + enum platform_profile_option profile) +{ + struct awcc_wmi_priv *priv =3D + container_of(pprof, struct awcc_wmi_priv, handler); + + u32 arg; + u32 res; + int ret; + + switch (profile) { + case PLATFORM_PROFILE_LOW_POWER: + arg =3D PROF_TO_ARG(AWCC_TMP_PROFILE_LOW_POWER); + break; + case PLATFORM_PROFILE_QUIET: + arg =3D PROF_TO_ARG(AWCC_TMP_PROFILE_QUIET); + break; + case PLATFORM_PROFILE_BALANCED: + arg =3D PROF_TO_ARG(AWCC_TMP_PROFILE_BALANCED); + break; + case PLATFORM_PROFILE_BALANCED_PERFORMANCE: + arg =3D PROF_TO_ARG(AWCC_TMP_PROFILE_BALANCED_PERFORMANCE); + break; + case PLATFORM_PROFILE_PERFORMANCE: + arg =3D PROF_TO_ARG(AWCC_TMP_PROFILE_PERFORMANCE); + break; + default: + return -EOPNOTSUPP; + } + + ret =3D awcc_wmi_query(priv->wdev, AWCC_WMI_THERMAL_CONTROL, arg, &res); + + if (ret < 0) + return ret; + + if (res < 0) + return -EBADRQC; + + return 0; +} + +static int awcc_wmi_probe(struct wmi_device *wdev, const void *context) +{ + struct awcc_wmi_priv *priv; + + priv =3D devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->wdev =3D wdev; + dev_set_drvdata(&wdev->dev, priv); + + priv->handler.profile_set =3D awcc_platform_profile_set; + priv->handler.profile_get =3D awcc_platform_profile_get; + + set_bit(PLATFORM_PROFILE_LOW_POWER, priv->handler.choices); + set_bit(PLATFORM_PROFILE_QUIET, priv->handler.choices); + set_bit(PLATFORM_PROFILE_BALANCED, priv->handler.choices); + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, priv->handler.choices); + set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->handler.choices); + + return platform_profile_register(&priv->handler); +} + +static void awcc_wmi_remove(struct wmi_device *wdev) +{ + platform_profile_remove(); +} + +static const struct wmi_device_id awcc_wmi_id_table[] =3D { + { .guid_string =3D DELL_AWCC_GUID }, + {}, +}; + +MODULE_DEVICE_TABLE(wmi, awcc_wmi_id_table); + +static struct wmi_driver awcc_wmi_driver =3D { + .driver =3D { + .name =3D "dell-wmi-awcc-platform-profile", + .probe_type =3D PROBE_PREFER_ASYNCHRONOUS, + }, + .id_table =3D awcc_wmi_id_table, + .probe =3D awcc_wmi_probe, + .remove =3D awcc_wmi_remove, + .no_singleton =3D true, +}; + +module_wmi_driver(awcc_wmi_driver); + +MODULE_AUTHOR("Kurt Borja"); +MODULE_DESCRIPTION("Dell AWCC WMI driver"); +MODULE_LICENSE("GPL"); --=20 2.46.2