From patchwork Thu Jan 26 19:40:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Armin Wolf X-Patchwork-Id: 48875 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp452451wrn; Thu, 26 Jan 2023 11:42:35 -0800 (PST) X-Google-Smtp-Source: AK7set9Q9eb+lyGPSL8HntqtKJt93+Nk5bGqCEguXk/ib5bDgFAL93NBAdDqVAY79PAJ67SNbS70 X-Received: by 2002:a05:6a21:3a8d:b0:bb:baa9:ad88 with SMTP id zv13-20020a056a213a8d00b000bbbaa9ad88mr8120864pzb.44.1674762154828; Thu, 26 Jan 2023 11:42:34 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674762154; cv=none; d=google.com; s=arc-20160816; b=Y37n8HaGgg0RZuapG0TLHYU9m9amMu687udEp9RyNFhG053x0PkDIl+qEMqJfRwgIj G76yK9QlpwCh3liI/w8ZsB3FNkrdYAi8Y5ocDPZT1a0Hj31/hdN0Pk1o74Z7OWntz1Dl yGVoRb1+4zjJiPu1fw4d1HwkOpc5w9TC4GrVZp5xKCddCxP/swkIMYGtXOD30S8FHJb2 b3Tm88jPIs6oLq29EwLEo2xaMcbO9xPOyVgCHkuCak5e++e3R8WTawM2LjybxXOAR+Rn ZISToCkK0wtCWPpcPz2XDq/TzlbRrD8rWaGZcoltVE0lPY/RioTa0n/LPsBaPMhRvT1X mLdw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:ui-outboundreport:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=xkozjD46LDhevsQ3LKkvtfA8TOfGLn1ChQiqgMIt/0k=; b=zuHt4MMuUeatqFYmoDU/Do1rFRZiY5/fUxDd6s9hoCPUF8YvUykBG1GmQheVVnWd0j J+bjKTXYRLNgJCNDvX4xlkAUfWcgvXtLxyM30Hc61/VZCW6uSDqE2RxPyTO/a+3YQEBa +HvY7ngiP7iNY15q9thp6ZafzM8P6yepuiZCA1CKQjL1n/QI9kQuwzNv8bfTxUhsFwUA iT3q5CJvVs3XPzxHDfp8lFGT7FEsFvXNhHHI4s9sR46CrrW46m3vRVAZaflDLfJU94RC oZBjcQpl/7B03H38itoHazlg1rQQAwpgeaJdGHfJirxeLH6xuqeANnQCXvoaLTA90kQg g70w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=sUV2O9si; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id m23-20020a637117000000b004c7883728c4si1999943pgc.324.2023.01.26.11.42.22; Thu, 26 Jan 2023 11:42:34 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=sUV2O9si; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232511AbjAZTky (ORCPT + 99 others); Thu, 26 Jan 2023 14:40:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43404 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232186AbjAZTkw (ORCPT ); Thu, 26 Jan 2023 14:40:52 -0500 Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35B982D51; Thu, 26 Jan 2023 11:40:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1674762030; bh=2TL7aTm8N/AzcTDSZC7SmNVqKjGX/jFf0Ms82bCmlQ4=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=sUV2O9sisppQ5XXA8g+mZZ+Cx2PgWPgOWrxSu2SQI4nWrDhc0ydAmK76YZWWKYRXb RDS5bvpH+5QIT6/KNzsqFUyYvlNNLufUbRI9rJoOORmrDHZW1fe7Kg8agFe878wEs8 m7ERRrPSYYzysTJlG4Zy2G9TOZyE6LtLWD5rqUVSzArbkJGf7aK/QvWfji+VY3OfEw ZKEY9GXTlVWEWieVpPNxB8Bs2+4ux/MjyEhbuwurEZfRwtJeQKSFrcsbpXA/oRt7o1 Q1bckiTyEXAjyDDzCaDscKwkUkT2vMZXGXf5qK63bJzrtaJFHK2pNFuwnbhZdYV2rP HeCp51hkYs8DQ== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from esprimo-mx.users.agdsn.de ([141.30.226.129]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1M42nY-1pL86o0Wpc-0001Gb; Thu, 26 Jan 2023 20:40:30 +0100 From: Armin Wolf To: hdegoede@redhat.com, markgross@kernel.org Cc: jdelvare@suse.com, linux@roeck-us.net, platform-driver-x86@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/5] platform/x86: dell-ddv: Add support for interface version 3 Date: Thu, 26 Jan 2023 20:40:17 +0100 Message-Id: <20230126194021.381092-2-W_Armin@gmx.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230126194021.381092-1-W_Armin@gmx.de> References: <20230126194021.381092-1-W_Armin@gmx.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:Cv+dN4fSwbR9l2vEKOEDAENRLMdwkFzHQ4eIoeDdE5p0oZttKYX zjHWDE/v7mxpFRiDAyZjH4Hu3vOAx1z7As5mwDb28OPwcDJPsAjFN8bT8CM8dSQstoOMoBK 1EOLXaeSJ+QugAdSaEG7D6OONTe37PQWMMBGyLc3um26bmKtTlY0CsMir7oNJyA8ngOAeUk H1uoRiDzJj+M3xIyWq7LQ== UI-OutboundReport: notjunk:1;M01:P0:ib7GGmWQ2PA=;Y+R1eYyO3J9NR2Pv0sNfv78K44V 1o0JfBV03CeIIJYNO7AVjqEe1YMrjDRrz7M4VI8EUw0MKqiXFcM5rdcY7UeNlHkwb5ErTQMkI JVHfbzsrKe0XGrf2+GnfgBBkk15MqoYS/K460lQVj6Oj9G8UnHNE6Qe2Hx6WqFC2QtrPs5wgS mDdAyM2XkDgARmh4yV4tS2pkpYyMGeSE2dNKazK8xWVhku1ABFzALb1I7BRgVhBQKcRQW6AHr O0Ccgh5L7cLGacO1eYSdr6HOmOtqZZf3dldrmrbKI9w7u+JgCAjTuj+q4DBgCu2fI70/CR60q FBByw8mhC6ObSTu8KYlhouWJ5+XD4w87aUtgGM7EJpP+W0iuqnncZwa448j6BIcwkD+C74WwP XEteXx7S/7PQQWTUgBL6JmjQc1f8LXJ0csFBaT5qW/jOyM3H2ZUJZ64fKEU9cXnpeI5bu7+Wp 4E2o95KasC26kChfVTQljYZEIrcjHxoakESDH9LIE5Ap7Zxg6LIK2ckoIvCUhTWY0NuBuyFTj i+soZXSrJn6H7FiYfZJooYCLmdEIBe+oDqF/DhIL0CCRNDwzWy0fvjsmUb6srN1B7gQ8JCekG cFD0XjEL1IP3ExEzVQIE0R5/uCdoCLpVeU530xc+a/9EqHiDKFxWiSsLbyn8ok53uLf2wPhsv 7XTMTIl71Mmf6paL9pbV80s/Kuo+epijeIk3U64UWuQ7SI4fa8ZcNadNKHRwENj3lr07oK70C UOmKkRVBmw/x2KSrphv3I+cfr52I1n7mQ/q8ZzRMOpnTjklnY9gdw3l3vVsUT+HquTByA//rE oSMXnNd8nLrp3wIC42RXw74nZSvyAY2Jip4WPkkfgHjCFRRLXCjcf2f6wGq5RG25JYctznq0b eNVYv73KPCoaX9lVbhds3jQzkiekoetviqWOMasHLgjmarCXxSVMxPCM8QtTtSFujBcmi/7nt ZHwmOKT4dF4Cs8gWE5Va1DrjosA= X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756115401127707697?= X-GMAIL-MSGID: =?utf-8?q?1756115401127707697?= While trying to solve a bugreport on bugzilla, i learned that some devices (for example the Dell XPS 17 9710) provide a more recent DDV WMI interface (version 3). Since the new interface version just adds an additional method, no code changes are necessary apart from whitelisting the version. Signed-off-by: Armin Wolf --- drivers/platform/x86/dell/dell-wmi-ddv.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) -- 2.30.2 diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index 2bb449845d14..9cb6ae42dbdc 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -26,7 +26,8 @@ #define DRIVER_NAME "dell-wmi-ddv" -#define DELL_DDV_SUPPORTED_INTERFACE 2 +#define DELL_DDV_SUPPORTED_VERSION_MIN 2 +#define DELL_DDV_SUPPORTED_VERSION_MAX 3 #define DELL_DDV_GUID "8A42EA14-4F2A-FD45-6422-0087F7A7E608" #define DELL_EPPID_LENGTH 20 @@ -49,6 +50,7 @@ enum dell_ddv_method { DELL_DDV_BATTERY_RAW_ANALYTICS_START = 0x0E, DELL_DDV_BATTERY_RAW_ANALYTICS = 0x0F, DELL_DDV_BATTERY_DESIGN_VOLTAGE = 0x10, + DELL_DDV_BATTERY_RAW_ANALYTICS_A_BLOCK = 0x11, /* version 3 */ DELL_DDV_INTERFACE_VERSION = 0x12, @@ -340,7 +342,7 @@ static int dell_wmi_ddv_probe(struct wmi_device *wdev, const void *context) return ret; dev_dbg(&wdev->dev, "WMI interface version: %d\n", version); - if (version != DELL_DDV_SUPPORTED_INTERFACE) + if (version < DELL_DDV_SUPPORTED_VERSION_MIN || version > DELL_DDV_SUPPORTED_VERSION_MAX) return -ENODEV; data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL); From patchwork Thu Jan 26 19:40:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Armin Wolf X-Patchwork-Id: 48872 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp452346wrn; Thu, 26 Jan 2023 11:42:15 -0800 (PST) X-Google-Smtp-Source: AMrXdXvVEku7Fm3p7KkDAvzaf4F7F8MR+CVi2KwUIoGnd3X2VIRVATAGOrrHiJCATEyYDnoYUaeD X-Received: by 2002:a17:903:2349:b0:195:e373:4c60 with SMTP id c9-20020a170903234900b00195e3734c60mr31943998plh.40.1674762135119; Thu, 26 Jan 2023 11:42:15 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674762135; cv=none; d=google.com; s=arc-20160816; b=xrSgObDPFnBm7J4GuxCLFvzUKIswbunVafT4M7mwTKauXiTrSD4NoLxj7lp0Ye+zXE QV6Tamc7cBp/uOzTr8CoBTqsxl+Jrmkf6lC85RjRIWh00axTR6MZJj9y7F6Bv25k8hUV dMAQr9Vana8mADv5xYwiHb9OogjfZeNxuaMCCYIlS/2cce2Xvts55VRRNwgcIm1z4AXs u7DlpX71MnLPYtgRi9mYttrQDxus3uyPQpGvJULmIJwAtNgPB+KeaOjbXHKh5S0MAh8d dfnc+BD06J7ykvmz5lJTVN9pyI8xJkHDan1Urg06GIZgacvjoqvDMgvNuYB3RY/8Nl3e rqtw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:ui-outboundreport:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=+z1XNMUUUjdhrVPcxwTpObnHQqrCUwQCqsaZnKf+4QA=; b=YgmWMJAb4/emRyGqXZOZG+xYqjFl0skDDnNpCpoINzx9ubAcuSonXtsPQ2J4XChuxc C3Ra9sqsTy/ztm5OlRO4+TYk2GW0B0MWW3gA3J/C12tv5eJ18547U2NwMueDeVT1mSva B5Gin4hp/zaek5FpFVf6GsZ3LVdrAUYreC0UjvLqvolX8Zuaag5853YRqw+0bg0g3eZ1 Dds8goO6cO2XAWbNyMOtboKhnNCpA91+9vJpEViQ8Tb0izdgsUFYCezCa0ctQr4kHC49 W/jktBl6RBuvk77A1egV/HuPMnQLcziL7ApFDn3ZxGKLyJBvLzBVS8nx54Y/qZd6cBQt Pnmw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=c8THx++8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id m2-20020a170902bb8200b0019608f59f8bsi2246165pls.64.2023.01.26.11.42.03; Thu, 26 Jan 2023 11:42:15 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=c8THx++8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232563AbjAZTk4 (ORCPT + 99 others); Thu, 26 Jan 2023 14:40:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229781AbjAZTky (ORCPT ); Thu, 26 Jan 2023 14:40:54 -0500 Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DFE6B10C3; Thu, 26 Jan 2023 11:40:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1674762031; bh=35rCENsPcijyAOhim7K4l+Ky2PzYKCOaBYl4vL3So08=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=c8THx++88u0z3Li2dPWLmiUJh3tQYk+5k5AWe9kgtAZawNap337YUDeEm69M8y6F7 Cq2ZeKfRlSRNw7EwlYSx9eEEZBFih2v+pZe5xxE8hY9VQ/oqV24uv1/7BgbxY+Wmyx Zvoz5NUo8v4yRrwiE5MCSXYFLqDHeKTKusoYbsm9IHu/sSAz5Jh5wYWrKuWbTTOTsQ K1Pmpru0qCnMeyNw8googOpxFOL4SODHDHm8gcM5CTZlihaX2KsiNbyiCUnZ/Fz1GT HalvDJ1lGRlmPLwCN9jXw87hPtQNt4pLlAhZTFwKkHgsrbQMwsEIVSeEdsKl/JC3cN GzCs1G11apZcQ== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from esprimo-mx.users.agdsn.de ([141.30.226.129]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MOzSu-1p2Ljv2IwO-00PNjg; Thu, 26 Jan 2023 20:40:31 +0100 From: Armin Wolf To: hdegoede@redhat.com, markgross@kernel.org Cc: jdelvare@suse.com, linux@roeck-us.net, platform-driver-x86@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/5] platform/x86: dell-ddv: Return error if buffer is empty Date: Thu, 26 Jan 2023 20:40:18 +0100 Message-Id: <20230126194021.381092-3-W_Armin@gmx.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230126194021.381092-1-W_Armin@gmx.de> References: <20230126194021.381092-1-W_Armin@gmx.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:FMTSH4+GCt1tIQzTjFcLnT66ULXWluDg6AME49SW9RJN1ESjvgZ VlzlLuMrNKVyBIgofZwYDWFS4KsSB1uSrr8AblshAKjrk1wf4GwjlT+raPTNc0TrdUVCPPF 6JjwVwtk+RHuggQOGvLXVRbpCq1VlrSa43K01HL6YW2RstdBBA1h4DIJQ7G8uEWrcAjezAm BCtgrnuYnpSEUzkwVABXQ== UI-OutboundReport: notjunk:1;M01:P0:4icOODEvEbI=;ZMKE8wju+QfVcIYhCsHMOJcrICL hQOd58nd4xh9P9bhNSOJT5DpwQ3JAGkOaka8lIpE/bFZm44YDhkfJCnOOwL8OQMV0xeyjcULW gt16zlY+xc8URMUhQ+rYrTYYsgqvhgWx831voblF0jNZCgjY5Lov+xhzQX8DaIG78LXKTeEMt vdMy0YoL4FP5OFtNeAdRjRvcUZ90I9U3bWMgqFA1qCLVDilECHLJdBBXI2uHphSCUn3WsD8UK Aw7hxZJmVwJjIjUquzE1W6wTutsQy7vnnf773dONHmW5kpD+7goI6rao39Jp7QNktJhk6P1EZ LrTjX6NTv/G+AlK0SOfuPdYlYo8MAx5u7Ej3MibCFQGH4kD28J4b13KZCGmNaujDpNJ8s+eQ1 V8+UOm/kSsNgGZnH/u4XQ1ZNgnBAzn11Uy6hAiSPH8924r9S/Ur0alrh9ovHpSXWYpykN+tAb kN+rpzUaLWyBQArw80Fyh7MdOEEH5L+nXXT15OkKv9WNEJ8zXfmr1ZB0d2wOnGiqKaKsvN2qV ICQEhRVqIMlo4MjTzMlD8hL2TC67MzuKXtGFiET+VviRXTzJjmDMDHV9lB8q2aYn8LIHdkFJi FJp+srLE/qCUZZJxBzZVk5JCSBIXIZ5Ohzh5oIAtGPZ+R8mW1d7i/4x6zkLDNb/VOiHDXaeXY znDwpYIMqq7hE/grPPFWq36phLTxFx3Vx2bQqacP+x8NJDRzFmJRGXvlDtRjgIHcZMgbrTYZq VZJerh3goSQ5PsHY9JTWYGXTUOaKLbUvyGPVyWOxK1RBjxpWoCP2PQaoESHmGt1kZM0/+txmv pcqhJDVFSxfiiOnuezA/kqSnhyRNqokHE4id0n0eX56hhZr4oeCLrkjeESO2PzS2zb3gDGW1z Q1vk9seCktKdR3uFJFhxXeFI/pcjM+uRjr7LS5vsWkUIVONCF5uTOdYPGZhZJT2/BPjDkmEZS /qAEFy7TyJ6VtIZ+hddwYYLgTAk= X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756115380801854323?= X-GMAIL-MSGID: =?utf-8?q?1756115380801854323?= In several cases, the DDV WMI interface can return buffers with a length of zero. Return -ENODATA in such a case for proper error handling. Also replace some -EIO errors with more specialized ones. Signed-off-by: Armin Wolf --- drivers/platform/x86/dell/dell-wmi-ddv.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) -- 2.30.2 diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index 9cb6ae42dbdc..f99c4cb686fd 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -125,21 +126,27 @@ static int dell_wmi_ddv_query_buffer(struct wmi_device *wdev, enum dell_ddv_meth if (ret < 0) return ret; - if (obj->package.count != 2) - goto err_free; + if (obj->package.count != 2 || + obj->package.elements[0].type != ACPI_TYPE_INTEGER || + obj->package.elements[1].type != ACPI_TYPE_BUFFER) { + ret = -ENOMSG; - if (obj->package.elements[0].type != ACPI_TYPE_INTEGER) goto err_free; + } buffer_size = obj->package.elements[0].integer.value; - if (obj->package.elements[1].type != ACPI_TYPE_BUFFER) + if (!buffer_size) { + ret = -ENODATA; + goto err_free; + } if (buffer_size > obj->package.elements[1].buffer.length) { dev_warn(&wdev->dev, FW_WARN "WMI buffer size (%llu) exceeds ACPI buffer size (%d)\n", buffer_size, obj->package.elements[1].buffer.length); + ret = -EMSGSIZE; goto err_free; } @@ -151,7 +158,7 @@ static int dell_wmi_ddv_query_buffer(struct wmi_device *wdev, enum dell_ddv_meth err_free: kfree(obj); - return -EIO; + return ret; } static int dell_wmi_ddv_query_string(struct wmi_device *wdev, enum dell_ddv_method method, From patchwork Thu Jan 26 19:40:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Armin Wolf X-Patchwork-Id: 48873 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp452417wrn; Thu, 26 Jan 2023 11:42:31 -0800 (PST) X-Google-Smtp-Source: AMrXdXv0axStD7r0JNIqHRzlgMoqXg9hFNSywEx+c1bpFfsXxtxiWT69nH/hqPID1s/xyf1klYJY X-Received: by 2002:a05:6a20:1a9d:b0:b6:3708:7be7 with SMTP id ci29-20020a056a201a9d00b000b637087be7mr30515573pzb.34.1674762151328; Thu, 26 Jan 2023 11:42:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674762151; cv=none; d=google.com; s=arc-20160816; b=Hc+pJA1HoBOVrtrI6icbYLlol5+22FZtFjxpzmkakZFUOwooOcKs8VUQeDeP27AlQo ChcyRZgRfG5X4BFy0GDjMf0T0tKM4PizDh2S+u1ulzsgu+zjiB1qKduz5l4vqaBRt6uo +x8ptzJHu7ltQce+r2P6CEMn1wbr6viNAAA9X8+DC/w8gT+IIqfKaU36IR/WuO14vEiL dKfuQCUD+Hkv84SHq26D7dzopHBKxw6y9Uya0R1tB6tjBcz6ZFTISfq0LdNvGET8H7In 6c9Z31zMmxoXS1Pilt71FGKD9RyitwainXr0uvBae3ESB3m/0kAVNQmT6wMOZGEKvxzQ xCgw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:ui-outboundreport:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=oV+Y9fErEf4XtP60I3tQ1n07WYtDgzidBkYZsvgLiTE=; b=IuJtRs1ZvbRvgaOlC7m1Y7zM978O6TVzoqOzbvKu2EM1K/IFXLw/Wl1xWGshhEQ1mM Ds9dj5vcc5K7lfDVST3DZf8P3Ho4iw6CMbzxkEQLcF6yFpAoZlwMg0KzsYQj+OEidRVT Wdvlhp8y68hwfy49t6oXoWIAwgJs337YHaXG+QsrhiUUraNxSbGZy0K6pKFCUG3NpZZ6 mcX+68TG93apdynxokQXJz6kZhqN7i630DZaO11SG+bW+CsMpBS8S07QA8v4eiUba+Yk VA9wwDFBm+OiYNBYCZXQ8HszgxFBWNSa+popv7xkvVE3DCae+WuaNqgvaCZv9rAjg95P PTDA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=LgPh1JBT; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: from out1.vger.email (out1.vger.email. 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Signed-off-by: Armin Wolf --- drivers/platform/x86/dell/dell-wmi-ddv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.30.2 diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index f99c4cb686fd..58fadb74e86a 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -87,7 +87,7 @@ static int dell_wmi_ddv_query_type(struct wmi_device *wdev, enum dell_ddv_method if (obj->type != type) { kfree(obj); - return -EIO; + return -ENOMSG; } *result = obj; From patchwork Thu Jan 26 19:40:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Armin Wolf X-Patchwork-Id: 48874 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp452425wrn; Thu, 26 Jan 2023 11:42:33 -0800 (PST) X-Google-Smtp-Source: AMrXdXsIbx2EWnLjbVvUSbFAYHo1jiTg4E96s1CExqm69krLEnZElpT59FDDpPfhQzh/jjruVGTD X-Received: by 2002:a17:902:f705:b0:191:1e89:35de with SMTP id h5-20020a170902f70500b001911e8935demr38847409plo.9.1674762152621; Thu, 26 Jan 2023 11:42:32 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674762152; cv=none; d=google.com; s=arc-20160816; b=OBAQ3t+x1tUo03r5gtuLvHo2qJph/0lc0DDzBz+DiNoz4OoIZbxQZ8BU75h4tAjRZW 9ZHdqam5WhhW0iQpNlsPVFntG2poRo1SgITcTEJUbedJp7rmgMuHaZeHTcc4oowejZpY JjjygMSlN2b+8Hu36AkoQgkrSdgmdPyDUwnKNPk1OO5eAG0f8tO2YQld/eRPZjN7bNAO 1mfYuqksZ/qiw1BamaD0wkufJfkHP9V1bVtiPR2gdDy2lwr9pAHaSB52bimlGI4rjiCF 8xrY/6FFYbJZG66NWBh+GPiUyzvypmUDEjv+D1HAiam5vfS2QGXKcCD0sZ9aC5fZRjlv S3SQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:ui-outboundreport:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=5Qw4dlWo0kFGdfZl/6cmK5KDYkbtUAwvb18ARv8Bppc=; b=k41QUG2nG0w/aLYfkhlw0F1l+sInmdhdhKERNshdwXSyhqsv+ZEvYIgnS+lpq/qQdj MfHouwWoXSE2PSkYQ+y/iFGkQTTRChPdn1HKJD0m1nNPdhp6yWy/IrkTaDMy3m+BiFII qqb+qCSxRTczFN9fi+RABmMuXbUumQezSd7jQB41/Z0ErKMXEsvBEkF9V7Jool7lP94t mF8d/3Ra5p43FuqzB4SAsMyqallXK9M4Phu0Wkd4Jzvr1O8HN2y+YHaOCo1+IEOzccQ+ l6JPm2h5yPwX86wRpTQ1KlU92psYDYVV0Zj59RUY+bRFtfECfoZvm+Q4Oc8wD5Ofyo7b phJw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=T+IFB2Ff; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id w22-20020a170902a71600b00194b1c44205si2151998plq.523.2023.01.26.11.42.21; Thu, 26 Jan 2023 11:42:32 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=T+IFB2Ff; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232576AbjAZTlG (ORCPT + 99 others); Thu, 26 Jan 2023 14:41:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232558AbjAZTk4 (ORCPT ); Thu, 26 Jan 2023 14:40:56 -0500 Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7B1E919F1E; Thu, 26 Jan 2023 11:40:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1674762035; bh=YdjYt1hNkKObM0Ir4G1v9+RZ9f+OGA4OgCN1VC6gvV4=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=T+IFB2FfvYzRv1fKEdc+2ZsV0LecOaCxwY9keMu6+w7IIVXVGx9FooWbHWVSdJI5h we2PK8ssigdZFlaAHx7Q4+co1UK/jtGZ3ieMPVRVH/crbjreAIUscuuHnlX3mYvBvO b+8RcQ4p6dBKxwCO+BJUJI71oU/DocJ4y3ys5T8Rxu3CXUdUNOkFLxPhSuqPJUmTBi OnepSDmGXFzm2wnHjOwKHNm+tjsVXDpgpLZiTbd9CfW5T/Q02ERYT+1O+b1FAPnDwv uIehPxxlYb/cS/zsxk4maeUlbkk8zFNpcFg1kpOcgERJdrvu+5+isXh216+kMxZkfc w+U0Hvuo0fKSA== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from esprimo-mx.users.agdsn.de ([141.30.226.129]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MC34X-1pXXdX3JOf-00CRnZ; Thu, 26 Jan 2023 20:40:34 +0100 From: Armin Wolf To: hdegoede@redhat.com, markgross@kernel.org Cc: jdelvare@suse.com, linux@roeck-us.net, platform-driver-x86@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/5] platform/x86: dell-ddv: Add "force" module param Date: Thu, 26 Jan 2023 20:40:20 +0100 Message-Id: <20230126194021.381092-5-W_Armin@gmx.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230126194021.381092-1-W_Armin@gmx.de> References: <20230126194021.381092-1-W_Armin@gmx.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:eTK8nJcBuZ63uhcSzfBS3cLU0NjgY3Wzp9l/NVLM+qvDcz6m6cy hAlUJtWguiDTODwnm8chbdA/U/C6LjGjo43zVjIRJgZqYb7Lltq33+WkK6cdomutWm+B8xO kieIGn/fM8ifOptJ6hj7GigmqpCv0UOMhw2l0dVnLIYlbaN/kklNE0YzjeqvDbutm/f96EN P2cRoGD121AUyZzLgSsfw== UI-OutboundReport: notjunk:1;M01:P0:CcRpqVwyz7k=;85JdvKVLhlzdNJsKc8PI5Nx6fu6 eOz9QjCbZ07+cAx67ZtpHq5M+givHKU1mMeo/DoBIC9v94QFvgJrs+5tuuyvlSGlBm+G5ax5b J/Rvq1EYOcD/j1S/Xdsm95htf+4vTetPv1eJnwbAzWvD4WT469JGXA7HRTlYC6Of/ylDOAXEa cDKt2RVVOpmC9QsmF3+oKnOUm+g2sYHtDE+BEWM8uzVstSu7bY/qxcZjfhNAIlHz8gbSXS0IW kTO0hVA+0LUzYcDz3QMbfF+nIX+NxC5Y2v3TVgIMeOYrpITmAt2t0VDeuBGP6GjSv5cNQUHrV 8ebL0oIRoNhnw4cwkLCBJtXjv5vpbmtCMBhMB4MRQ3zXrLETu8qHTC4EvwOPt5841iSNhsOqD bT66RYXtsmsH9XhCRp+hDQ5sJ+3KLaBUotfpOVg2Q4t62wlZQMAFwr33EO+sOHM8LCPKPS8uB AQ9MfcU8E1BKeHeM9t0oyW9pCW+KD5Zrkfmk9cghu9EPI2nSEqohx2MX/E+vBmX6P/vS/Ajse Z1jI0K6aMlP3g6l176uBowwkOH2T0HSooUYs9Nd/KcdnQXZw/v1ZWLh+zDu48SZ06Mqx+sPDq 4B7jNOKaQgyO7L5oTS/R5SNVtVD2mL94w5a6bkzTxOA6LROXUmhhPy2jCCFSup7oJBJLbuF5q G4bbQF77LfB7IR+yL/oFNrAjnbjPlKtZ/Iez0oPHEUwmsNf44LEl8NNaYjX9NzTvq1sYH6lyo sY+o75JkrHGblZeu3IqLrhKdt0cEgdy6ybnCvcuF1Y4Bbt1gZ03fp96BuNW27vL10FAEM03lo TP+BXJE4sZJfhex5J/Iu0kqScrrPxdfd3Buo4pDI9lNGzbckCwk8cXcSBuaWhTJn0E7Q7oJa+ d8P5jZTCnas7kjjMH2dmwFOogkAlwJV+bpAOCuEVWbIESPIVKNQyYB5lwvaH7NVmAcblrg5DK D5JYR4lXNjZuNAoD8udJcR3U6kk= X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756115399282764020?= X-GMAIL-MSGID: =?utf-8?q?1756115399282764020?= Until now, the dell-wmi-ddv driver needs to be manually patched and compiled to test compatibility with unknown DDV WMI interface versions. Add a module param to allow users to force loading even when a unknown interface version was detected. Since this might cause various unwanted side effects, the module param is marked as unsafe. Also update kernel-parameters.txt. Signed-off-by: Armin Wolf --- Documentation/admin-guide/kernel-parameters.txt | 3 +++ drivers/platform/x86/dell/dell-wmi-ddv.c | 13 +++++++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) -- 2.30.2 diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6cfa6e3996cf..9bbff5113427 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1024,6 +1024,9 @@ dell_smm_hwmon.fan_max= [HW] Maximum configurable fan speed. + dell_wmi_ddv.force= + [HW] Do not check for supported WMI interface versions. + dfltcc= [HW,S390] Format: { on | off | def_only | inf_only | always } on: s390 zlib hardware support for compression on diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index 58fadb74e86a..9695bf493ea6 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -34,6 +34,10 @@ #define DELL_EPPID_LENGTH 20 #define DELL_EPPID_EXT_LENGTH 23 +static bool force; +module_param_unsafe(force, bool, 0); +MODULE_PARM_DESC(force, "Force loading without checking for supported WMI interface versions"); + enum dell_ddv_method { DELL_DDV_BATTERY_DESIGN_CAPACITY = 0x01, DELL_DDV_BATTERY_FULL_CHARGE_CAPACITY = 0x02, @@ -349,8 +353,13 @@ static int dell_wmi_ddv_probe(struct wmi_device *wdev, const void *context) return ret; dev_dbg(&wdev->dev, "WMI interface version: %d\n", version); - if (version < DELL_DDV_SUPPORTED_VERSION_MIN || version > DELL_DDV_SUPPORTED_VERSION_MAX) - return -ENODEV; + if (version < DELL_DDV_SUPPORTED_VERSION_MIN || version > DELL_DDV_SUPPORTED_VERSION_MAX) { + if (!force) + return -ENODEV; + + dev_warn(&wdev->dev, "Loading despite unsupported WMI interface version (%u)\n", + version); + } data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL); if (!data) From patchwork Thu Jan 26 19:40:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Armin Wolf X-Patchwork-Id: 48876 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp453567wrn; Thu, 26 Jan 2023 11:45:35 -0800 (PST) X-Google-Smtp-Source: AMrXdXvkCYKgKhF1nWrRk8g1zZ+6tSdWg7ydIOXWDPNBmE0FRqLvHmL3mlkW3JuCB6gOoZUJm+Xp X-Received: by 2002:a17:902:f546:b0:194:d9d7:88c4 with SMTP id h6-20020a170902f54600b00194d9d788c4mr34077307plf.49.1674762335363; Thu, 26 Jan 2023 11:45:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674762335; cv=none; d=google.com; s=arc-20160816; b=fbf/goYwHl2GiDJ1j74amo5+dBREqP3VUS1GFlJ3qd+QED7ScG51BA75P0XF9V4IfQ YJwqsGIQ3M8Cry0mXnchb9gvV6aEhqMl27Hj/5Jv0p1HwZ7WWiUfjkRNWf2KKrUTZ9GY C54J9bQ0mmUscMg4BRa9NTxA5c9Ia4OPyqfduFagUsXDdSlta7Na4qnPSKWS4Piu8Jfy tXtUCa4D/Ff0tXMDVsIf758G833y15BhAC5orh/g1C/XWGJwvOy8Fqkgw/+2SlPTghZi QLDLvGRcEZPydAdyV7rxBlm5wvqMe7vVN2X/C66NNIu6qSDvqAIi4CwTCcWml8+EGoaF VCAQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:ui-outboundreport:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=qpPhI6wz/gu31ePGlqejz9yWDwnuaN9TJe5/SJiCYZc=; b=ZbErpZ83ZD09MLfD2R0BSfxFjbnfeZ4hDiC8IBHVZ1XP9bZkWzICjkyTsknOlnSSz8 u4p2QxoZDSA3BseWfv3a3WYP8wPaTWlkSlH73FNKGGvWCQe3fp2103VEiR6VBxRwgwOx CWoeU1qR8fUC5dIaRilBvCYKm8wdJ7caguVvNu/YYUvmK8qfPxQVinDzzlegWHdafEtb bZ21TNM7ASlZwRt1HO93H8cj/GdVAgUCM4vaLTXbmCPpXuGa4aaFXXDZcpQnhZ9SgW1q 66WEOLSe2DCZRy4EnFyY20A5Kqa88+APYPPcRXWLrso5MRIyALyuKMxBTnZAb6dg6SS+ BT0A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b="qOp7HRU/"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: from out1.vger.email (out1.vger.email. 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Add an hwmon interface for exposing the fan and thermal sensor values. The debugfs interface remains in place to aid in reverse-engineering of unknown sensor types and the thermal buffer. Tested-by: Antonín Skala Tested-by: Gustavo Walbon Signed-off-by: Armin Wolf --- drivers/platform/x86/dell/Kconfig | 1 + drivers/platform/x86/dell/dell-wmi-ddv.c | 435 ++++++++++++++++++++++- 2 files changed, 435 insertions(+), 1 deletion(-) -- 2.30.2 diff --git a/drivers/platform/x86/dell/Kconfig b/drivers/platform/x86/dell/Kconfig index d319de8f2132..21a74b63d9b1 100644 --- a/drivers/platform/x86/dell/Kconfig +++ b/drivers/platform/x86/dell/Kconfig @@ -194,6 +194,7 @@ config DELL_WMI_DDV default m depends on ACPI_BATTERY depends on ACPI_WMI + depends on HWMON help This option adds support for WMI-based sensors like battery temperature sensors found on some Dell notebooks. diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index 9695bf493ea6..5b30bb85199e 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -21,10 +22,13 @@ #include #include #include +#include #include #include +#include + #define DRIVER_NAME "dell-wmi-ddv" #define DELL_DDV_SUPPORTED_VERSION_MIN 2 @@ -63,6 +67,29 @@ enum dell_ddv_method { DELL_DDV_THERMAL_SENSOR_INFORMATION = 0x22, }; +struct fan_sensor_entry { + u8 type; + __le16 rpm; +} __packed; + +struct thermal_sensor_entry { + u8 type; + s8 now; + s8 min; + s8 max; + u8 unknown; +} __packed; + +struct combined_channel_info { + struct hwmon_channel_info info; + u32 config[]; +}; + +struct combined_chip_info { + struct hwmon_chip_info chip; + const struct hwmon_channel_info *info[]; +}; + struct dell_wmi_ddv_data { struct acpi_battery_hook hook; struct device_attribute temp_attr; @@ -70,6 +97,24 @@ struct dell_wmi_ddv_data { struct wmi_device *wdev; }; +static const char * const fan_labels[] = { + "CPU Fan", + "Chassis Motherboard Fan", + "Video Fan", + "Power Supply Fan", + "Chipset Fan", + "Memory Fan", + "PCI Fan", + "HDD Fan", +}; + +static const char * const fan_dock_labels[] = { + "Docking Chassis/Motherboard Fan", + "Docking Video Fan", + "Docking Power Supply Fan", + "Docking Chipset Fan", +}; + static int dell_wmi_ddv_query_type(struct wmi_device *wdev, enum dell_ddv_method method, u32 arg, union acpi_object **result, acpi_object_type type) { @@ -171,6 +216,386 @@ static int dell_wmi_ddv_query_string(struct wmi_device *wdev, enum dell_ddv_meth return dell_wmi_ddv_query_type(wdev, method, arg, result, ACPI_TYPE_STRING); } +static int dell_wmi_ddv_query_sensors(struct wmi_device *wdev, enum dell_ddv_method method, + size_t entry_size, union acpi_object **result, u64 *count) +{ + union acpi_object *obj; + u64 buffer_size; + u8 *buffer; + int ret; + + ret = dell_wmi_ddv_query_buffer(wdev, method, 0, &obj); + if (ret < 0) + return ret; + + buffer_size = obj->package.elements[0].integer.value; + buffer = obj->package.elements[1].buffer.pointer; + if (buffer_size % entry_size != 1 || buffer[buffer_size - 1] != 0xff) { + kfree(obj); + + return -ENOMSG; + } + + *count = (buffer_size - 1) / entry_size; + *result = obj; + + return 0; +} + +static umode_t dell_wmi_ddv_is_visible(const void *drvdata, enum hwmon_sensor_types type, u32 attr, + int channel) +{ + return 0444; +} + +static int dell_wmi_ddv_fan_read_channel(struct dell_wmi_ddv_data *data, u32 attr, int channel, + long *val) +{ + struct fan_sensor_entry *entry; + union acpi_object *obj; + u64 count; + int ret; + + ret = dell_wmi_ddv_query_sensors(data->wdev, DELL_DDV_FAN_SENSOR_INFORMATION, + sizeof(*entry), &obj, &count); + if (ret < 0) + return ret; + + entry = (struct fan_sensor_entry *)obj->package.elements[1].buffer.pointer; + if (count > channel) { + switch (attr) { + case hwmon_fan_input: + *val = get_unaligned_le16(&entry[channel].rpm); + + break; + default: + ret = -EOPNOTSUPP; + } + } else { + ret = -ENXIO; + } + + kfree(obj); + + return ret; +} + +static int dell_wmi_ddv_temp_read_channel(struct dell_wmi_ddv_data *data, u32 attr, int channel, + long *val) +{ + struct thermal_sensor_entry *entry; + union acpi_object *obj; + u64 count; + int ret; + + ret = dell_wmi_ddv_query_sensors(data->wdev, DELL_DDV_THERMAL_SENSOR_INFORMATION, + sizeof(*entry), &obj, &count); + if (ret < 0) + return ret; + + entry = (struct thermal_sensor_entry *)obj->package.elements[1].buffer.pointer; + if (count > channel) { + switch (attr) { + case hwmon_temp_input: + *val = entry[channel].now * 1000; + + break; + case hwmon_temp_min: + *val = entry[channel].min * 1000; + + break; + case hwmon_temp_max: + *val = entry[channel].max * 1000; + + break; + default: + ret = -EOPNOTSUPP; + } + } else { + ret = -ENXIO; + } + + kfree(obj); + + return ret; +} + +static int dell_wmi_ddv_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + struct dell_wmi_ddv_data *data = dev_get_drvdata(dev); + + switch (type) { + case hwmon_fan: + return dell_wmi_ddv_fan_read_channel(data, attr, channel, val); + case hwmon_temp: + return dell_wmi_ddv_temp_read_channel(data, attr, channel, val); + default: + break; + } + + return -EOPNOTSUPP; +} + +static int dell_wmi_ddv_fan_read_string(struct dell_wmi_ddv_data *data, int channel, + const char **str) +{ + struct fan_sensor_entry *entry; + union acpi_object *obj; + u64 count; + u8 type; + int ret; + + ret = dell_wmi_ddv_query_sensors(data->wdev, DELL_DDV_FAN_SENSOR_INFORMATION, + sizeof(*entry), &obj, &count); + if (ret < 0) + return ret; + + entry = (struct fan_sensor_entry *)obj->package.elements[1].buffer.pointer; + if (count > channel) { + type = entry[channel].type; + + switch (type) { + case 0x00 ... 0x07: + *str = fan_labels[type]; + + break; + case 0x11 ... 0x14: + *str = fan_dock_labels[type - 0x11]; + + break; + default: + *str = "Unknown Fan"; + } + } else { + ret = -ENXIO; + } + + kfree(obj); + + return ret; +} + +static int dell_wmi_ddv_temp_read_string(struct dell_wmi_ddv_data *data, int channel, + const char **str) +{ + struct thermal_sensor_entry *entry; + union acpi_object *obj; + u64 count; + int ret; + + ret = dell_wmi_ddv_query_sensors(data->wdev, DELL_DDV_THERMAL_SENSOR_INFORMATION, + sizeof(*entry), &obj, &count); + if (ret < 0) + return ret; + + entry = (struct thermal_sensor_entry *)obj->package.elements[1].buffer.pointer; + if (count > channel) { + switch (entry[channel].type) { + case 0x00: + *str = "CPU"; + + break; + case 0x11: + *str = "Video"; + + break; + case 0x22: + *str = "Memory"; // sometimes called DIMM + + break; + case 0x33: + *str = "Other"; + + break; + case 0x44: + *str = "Ambient"; // sometimes called SKIN + + break; + case 0x52: + *str = "SODIMM"; + + break; + case 0x55: + *str = "HDD"; + + break; + case 0x62: + *str = "SODIMM 2"; + + break; + case 0x73: + *str = "NB"; + + break; + case 0x83: + *str = "Charger"; + + break; + case 0xbb: + *str = "Memory 3"; + + break; + default: + *str = "Unknown"; + } + } else { + ret = -ENXIO; + } + + kfree(obj); + + return ret; +} + +static int dell_wmi_ddv_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, const char **str) +{ + struct dell_wmi_ddv_data *data = dev_get_drvdata(dev); + + switch (type) { + case hwmon_fan: + switch (attr) { + case hwmon_fan_label: + return dell_wmi_ddv_fan_read_string(data, channel, str); + default: + break; + } + break; + case hwmon_temp: + switch (attr) { + case hwmon_temp_label: + return dell_wmi_ddv_temp_read_string(data, channel, str); + default: + break; + } + break; + default: + break; + } + + return -EOPNOTSUPP; +} + +static const struct hwmon_ops dell_wmi_ddv_ops = { + .is_visible = dell_wmi_ddv_is_visible, + .read = dell_wmi_ddv_read, + .read_string = dell_wmi_ddv_read_string, +}; + +static struct hwmon_channel_info *dell_wmi_ddv_channel_create(struct device *dev, u64 count, + enum hwmon_sensor_types type, + u32 config) +{ + struct combined_channel_info *cinfo; + int i; + + cinfo = devm_kzalloc(dev, struct_size(cinfo, config, count + 1), GFP_KERNEL); + if (!cinfo) + return ERR_PTR(-ENOMEM); + + cinfo->info.type = type; + cinfo->info.config = cinfo->config; + + for (i = 0; i < count; i++) + cinfo->config[i] = config; + + return &cinfo->info; +} + +static struct hwmon_channel_info *dell_wmi_ddv_channel_init(struct wmi_device *wdev, + enum dell_ddv_method method, + size_t entry_size, + enum hwmon_sensor_types type, + u32 config) +{ + union acpi_object *obj; + u64 count; + int ret; + + ret = dell_wmi_ddv_query_sensors(wdev, method, entry_size, &obj, &count); + if (ret < 0) + return ERR_PTR(ret); + + kfree(obj); + + if (!count) + return ERR_PTR(-ENODEV); + + return dell_wmi_ddv_channel_create(&wdev->dev, count, type, config); +} + +static int dell_wmi_ddv_hwmon_add(struct dell_wmi_ddv_data *data) +{ + struct wmi_device *wdev = data->wdev; + struct combined_chip_info *cinfo; + struct device *hdev; + int index = 0; + int ret; + + if (!devres_open_group(&wdev->dev, dell_wmi_ddv_hwmon_add, GFP_KERNEL)) + return -ENOMEM; + + cinfo = devm_kzalloc(&wdev->dev, struct_size(cinfo, info, 4), GFP_KERNEL); + if (!cinfo) { + ret = -ENOMEM; + + goto err_release; + } + + cinfo->chip.ops = &dell_wmi_ddv_ops; + cinfo->chip.info = cinfo->info; + + cinfo->info[index] = dell_wmi_ddv_channel_create(&wdev->dev, 1, hwmon_chip, + HWMON_C_REGISTER_TZ); + + if (IS_ERR(cinfo->info[index])) { + ret = PTR_ERR(cinfo->info[index]); + + goto err_release; + } + + index++; + + cinfo->info[index] = dell_wmi_ddv_channel_init(wdev, DELL_DDV_FAN_SENSOR_INFORMATION, + sizeof(struct fan_sensor_entry), hwmon_fan, + (HWMON_F_INPUT | HWMON_F_LABEL)); + if (!IS_ERR(cinfo->info[index])) + index++; + + cinfo->info[index] = dell_wmi_ddv_channel_init(wdev, DELL_DDV_THERMAL_SENSOR_INFORMATION, + sizeof(struct thermal_sensor_entry), + hwmon_temp, (HWMON_T_INPUT | HWMON_T_MIN | + HWMON_T_MAX | HWMON_T_LABEL)); + if (!IS_ERR(cinfo->info[index])) + index++; + + if (!index) { + ret = -ENODEV; + + goto err_release; + } + + cinfo->info[index] = NULL; + + hdev = devm_hwmon_device_register_with_info(&wdev->dev, "dell_ddv", data, &cinfo->chip, + NULL); + if (IS_ERR(hdev)) { + ret = PTR_ERR(hdev); + + goto err_release; + } + + devres_close_group(&wdev->dev, dell_wmi_ddv_hwmon_add); + + return 0; + +err_release: + devres_release_group(&wdev->dev, dell_wmi_ddv_hwmon_add); + + return ret; +} + static int dell_wmi_ddv_battery_index(struct acpi_device *acpi_dev, u32 *index) { const char *uid_str; @@ -370,7 +795,15 @@ static int dell_wmi_ddv_probe(struct wmi_device *wdev, const void *context) dell_wmi_ddv_debugfs_init(wdev); - return dell_wmi_ddv_battery_add(data); + ret = dell_wmi_ddv_hwmon_add(data); + if (ret < 0) + dev_dbg(&wdev->dev, "Unable to register hwmon interface: %d\n", ret); + + ret = dell_wmi_ddv_battery_add(data); + if (ret < 0) + dev_dbg(&wdev->dev, "Unable to register acpi battery hook: %d\n", ret); + + return 0; } static const struct wmi_device_id dell_wmi_ddv_id_table[] = {