From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D274FC07E9A for ; Sun, 4 Jul 2021 22:22:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BA23A613F1 for ; Sun, 4 Jul 2021 22:22:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229852AbhGDWZI (ORCPT ); Sun, 4 Jul 2021 18:25:08 -0400 Received: from wout3-smtp.messagingengine.com ([64.147.123.19]:54093 "EHLO wout3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229649AbhGDWZH (ORCPT ); Sun, 4 Jul 2021 18:25:07 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.west.internal (Postfix) with ESMTP id 3D0803200925; Sun, 4 Jul 2021 18:22:31 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Sun, 04 Jul 2021 18:22:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=3CPDjxPiq6HlBKJX4u/v/vfPupRnUlydsIxOwue4RPs=; b=T1nUo8j4 Z5iTQO+yi8iaoXHdMWat1zgcEx+KbSrR7ztDM0ZNDm1kq7x4TDg2zE85YbGqDgGy nJCYOeW4qGyk0vPDBcz+DvK/48dGVyXHlujYfhrxfGmu4w6b4sDtjwbBmWsxr/qB o6zlInuskOF26BGNPw95m7XnS+XI6BdL13perxuncYwgJN7qUNifRl/zF1r+sOnu MchCkruQ3pntPEgdx9uYy7+x1uBQevC7M8Qlx+XEy4K8aDPbNLNLnuEuA2ve1GFb SmFLdmbDjTsl71ViwFWDblELRG4jVMC7ikhAvJgIC7owTBK9a1HjSRTYsqNdtqd5 bhyy9S1MI4R0Yg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrfeejfedgtdejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofgjfhgggfestdekre dtredttdenucfhrhhomhepfdfnuhhkvgcuffdrucflohhnvghsfdcuoehluhhkvgeslhhj ohhnvghsrdguvghvqeenucggtffrrghtthgvrhhnpedvteekvdeuhedthfeuudelheejie fhvddtteelleeghfekhfeugfehgeekffdtheenucevlhhushhtvghrufhiiigvpedtnecu rfgrrhgrmhepmhgrihhlfhhrohhmpehluhhkvgeslhhjohhnvghsrdguvghv X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sun, 4 Jul 2021 18:22:27 -0400 (EDT) From: "Luke D. Jones" To: hdegoede@redhat.com Cc: corentin.chary@gmail.com, mgross@linux.intel.com, jdelvare@suse.com, linux@roeck-us.net, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, "Luke D. Jones" Subject: [PATCH 3/3] asus-wmi: Add egpu enable method Date: Mon, 5 Jul 2021 10:21:48 +1200 Message-Id: <20210704222148.880848-4-luke@ljones.dev> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210704222148.880848-1-luke@ljones.dev> References: <20210704222148.880848-1-luke@ljones.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The X13 Flow laptops can utilise an external GPU. This requires toggling an ACPI method which will first disable the internal dGPU, and then enable the eGPU. Signed-off-by: Luke D. Jones --- drivers/platform/x86/asus-wmi.c | 92 ++++++++++++++++++++++ include/linux/platform_data/x86/asus-wmi.h | 3 + 2 files changed, 95 insertions(+) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 8dc3f7ed021f..c9fe77456b7b 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -210,6 +210,9 @@ struct asus_wmi { u8 fan_boost_mode_mask; u8 fan_boost_mode; + bool egpu_enable_available; // 0 = enable + u8 egpu_enable_mode; + bool dgpu_disable_available; u8 dgpu_disable_mode; @@ -430,6 +433,87 @@ static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus) } } +/* eGPU ********************************************************************/ +static int egpu_enable_check_present(struct asus_wmi *asus) +{ + u32 result; + int err; + + asus->egpu_enable_available = false; + + err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_EGPU, &result); + if (err) { + if (err == -ENODEV) + return 0; + return err; + } + + if (result & ASUS_WMI_DSTS_PRESENCE_BIT) { + asus->egpu_enable_available = true; + asus->egpu_enable_mode = result & ASUS_WMI_DSTS_STATUS_BIT; + } + + return 0; +} + +static int egpu_enable_write(struct asus_wmi *asus) +{ + int err; + u8 value; + u32 retval; + + value = asus->egpu_enable_mode; + + err = asus_wmi_set_devstate(ASUS_WMI_DEVID_EGPU, value, &retval); + + sysfs_notify(&asus->platform_device->dev.kobj, NULL, "egpu_enable"); + + if (err) { + pr_warn("Failed to set egpu disable: %d\n", err); + return err; + } + + if (retval > 1 || retval < 0) { + pr_warn("Failed to set egpu disable (retval): 0x%x\n", retval); + return -EIO; + } + + return 0; +} + +static ssize_t egpu_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct asus_wmi *asus = dev_get_drvdata(dev); + u8 mode = asus->egpu_enable_mode; + + return scnprintf(buf, PAGE_SIZE, "%d\n", mode); +} + +static ssize_t egpu_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int result; + u8 disable; + struct asus_wmi *asus = dev_get_drvdata(dev); + + result = kstrtou8(buf, 10, &disable); + if (result < 0) + return result; + + if (disable > 1 || disable < 0) + return -EINVAL; + + asus->egpu_enable_mode = disable; + + egpu_enable_write(asus); + + return count; +} + +static DEVICE_ATTR_RW(egpu_enable); + /* dGPU ********************************************************************/ static int dgpu_disable_check_present(struct asus_wmi *asus) { @@ -2502,6 +2586,7 @@ static struct attribute *platform_attributes[] = { &dev_attr_camera.attr, &dev_attr_cardr.attr, &dev_attr_touchpad.attr, + &dev_attr_egpu_enable.attr, &dev_attr_dgpu_disable.attr, &dev_attr_lid_resume.attr, &dev_attr_als_enable.attr, @@ -2529,6 +2614,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj, devid = ASUS_WMI_DEVID_LID_RESUME; else if (attr == &dev_attr_als_enable.attr) devid = ASUS_WMI_DEVID_ALS_ENABLE; + else if (attr == &dev_attr_egpu_enable.attr) + ok = asus->egpu_enable_available; else if (attr == &dev_attr_dgpu_disable.attr) ok = asus->dgpu_disable_available; else if (attr == &dev_attr_fan_boost_mode.attr) @@ -2792,6 +2879,10 @@ static int asus_wmi_add(struct platform_device *pdev) if (err) goto fail_platform; + err = egpu_enable_check_present(asus); + if (err) + goto fail_egpu_enable; + err = dgpu_disable_check_present(asus); if (err) goto fail_dgpu_disable; @@ -2896,6 +2987,7 @@ static int asus_wmi_add(struct platform_device *pdev) fail_sysfs: fail_throttle_thermal_policy: fail_fan_boost_mode: +fail_egpu_enable: fail_dgpu_disable: fail_platform: fail_panel_od: diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h index a528f9d0e4b7..17dc5cb6f3f2 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -90,6 +90,9 @@ /* Keyboard dock */ #define ASUS_WMI_DEVID_KBD_DOCK 0x00120063 +/* dgpu on/off */ +#define ASUS_WMI_DEVID_EGPU 0x00090019 + /* dgpu on/off */ #define ASUS_WMI_DEVID_DGPU 0x00090020 -- 2.31.1