From patchwork Tue Oct 9 06:40:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Drake X-Patchwork-Id: 10632011 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EE6973CF1 for ; Tue, 9 Oct 2018 06:41:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E065D28B53 for ; Tue, 9 Oct 2018 06:41:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D448428B58; Tue, 9 Oct 2018 06:41:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 560DB28B52 for ; Tue, 9 Oct 2018 06:41:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726415AbeJIN4Z (ORCPT ); Tue, 9 Oct 2018 09:56:25 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:38850 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725887AbeJIN4Z (ORCPT ); Tue, 9 Oct 2018 09:56:25 -0400 Received: by mail-pl1-f193.google.com with SMTP id b5-v6so313459plr.5 for ; Mon, 08 Oct 2018 23:41:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=endlessm-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id; bh=YdW5D1+hfiMb1UegpOsB0EMdcgNL3mR/BwJsQUhBqZc=; b=hPI+KqOw9/iAD7xh163p1lv823MajQpYZqVDyeFze83oUnOchkY1NO8t2KQBCNGFR+ sy69xvTSBcGeQ9i81bEbkc2CFPsF1lPSMpw3l2ZBZ4koYLn27/lAN2w8PYmbby9Iivnt Ev87gyB9jO75HUsxx5HA8GQ50lQj5gkTOfYBP9tnvTtkDOP7Nn2TuxG0anBNrib5fa5g pGGZ8mfj1aAgotl4q2swY0WBGsHBrdbizU8O3oezeGQF++NTzPCXKu/HIPhcRKyrLzQQ GmGrI2JtNQ/l4rJ5zwZYqTErCIxrVlY+LFsosOAfp4j38PqPbAT5QfZgNa9ueE/NrRfK r7OA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=YdW5D1+hfiMb1UegpOsB0EMdcgNL3mR/BwJsQUhBqZc=; b=oHICgkYh68alEfZ54/JPNjfKWh8NgVgLRdS2KFC4THtbyiKeANu6qrZQ7F3l8HwZLn XTkq1ZfJ5nj1pfsiDO1tkjuDcekgTSpJiWkfVoa5pGXcBSD5/yKDJc32MjcDtCsaYS6k ZRFv4ZSl5Mi1lKEuAQVXR6hypjRCnd3m4n97ztS8G+MwKvQTk/CIWV7Lg3TT5+hGYaVH 9jkOJ3yVK91ZCH9kTt8/y63ecsYbpkRThwfhcbnNyncIsjg6weiEw8gFRkAf0CKAYhYN xthT6DdTzr+2y9a+FBB7SOWqF6kWOj+in91zlTFMCrrTtQ49QvBDJdEn77yUD7reRnpK BAKg== X-Gm-Message-State: ABuFfoiSKGplLTWJvLfPIaeHaxpXIlTibDMXbQ11/PbHUMYzLsP1Ekdl nI+ffL8PHTG6mBbgHc1+0hKhcw== X-Google-Smtp-Source: ACcGV60ORz8GgBzqDYliuTUwSiSqdL2ev6hYmuaQ+pHj4CASL8Oc3lvC4lGhqOm5Zd/dWQ4KRcZGWg== X-Received: by 2002:a17:902:5a0f:: with SMTP id q15-v6mr27835559pli.253.1539067261452; Mon, 08 Oct 2018 23:41:01 -0700 (PDT) Received: from limbo.local (125-227-158-176.HINET-IP.hinet.net. [125.227.158.176]) by smtp.gmail.com with ESMTPSA id 74-v6sm27455879pfx.182.2018.10.08.23.40.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Oct 2018 23:41:00 -0700 (PDT) From: Daniel Drake To: corentin.chary@gmail.com, andy.shevchenko@gmail.com Cc: acpi4asus-user@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, jikos@kernel.org, benjamin.tissoires@redhat.com, linux-input@vger.kernel.org, linux@endlessm.com Subject: [PATCH v3 1/2] platform/x86: asus-wmi: export function for evaluating WMI methods Date: Tue, 9 Oct 2018 14:40:55 +0800 Message-Id: <20181009064056.17478-1-drake@endlessm.com> X-Mailer: git-send-email 2.17.1 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Export asus_wmi_evaluate_method() and related headers for use by other drivers. hid-asus is going to use this to avoid advertising that it has a keyboard backlight when the keyboard backlight is controlled via WMI. Signed-off-by: Daniel Drake --- Notes: v2: instead of copying asus-wmi code into hid-asus, split it out like this v3: add stub function for when asus-wmi is not built drivers/platform/x86/asus-wmi.c | 88 +--------------------------- include/linux/asus-wmi.h | 100 ++++++++++++++++++++++++++++++++ 2 files changed, 103 insertions(+), 85 deletions(-) create mode 100644 include/linux/asus-wmi.h diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 2d6e272315a8..9c0752527e1d 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include "asus-wmi.h" @@ -69,89 +70,6 @@ MODULE_LICENSE("GPL"); #define NOTIFY_KBD_BRTDWN 0xc5 #define NOTIFY_KBD_BRTTOGGLE 0xc7 -/* WMI Methods */ -#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */ -#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */ -#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */ -#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */ -#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */ -#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */ -#define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */ -#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */ -#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */ -#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */ -#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */ -#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */ -#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */ -#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/ -#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */ -#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */ -#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */ -#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ -#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ -#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ - -#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE - -/* Wireless */ -#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 -#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 -#define ASUS_WMI_DEVID_CWAP 0x00010003 -#define ASUS_WMI_DEVID_WLAN 0x00010011 -#define ASUS_WMI_DEVID_WLAN_LED 0x00010012 -#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 -#define ASUS_WMI_DEVID_GPS 0x00010015 -#define ASUS_WMI_DEVID_WIMAX 0x00010017 -#define ASUS_WMI_DEVID_WWAN3G 0x00010019 -#define ASUS_WMI_DEVID_UWB 0x00010021 - -/* Leds */ -/* 0x000200XX and 0x000400XX */ -#define ASUS_WMI_DEVID_LED1 0x00020011 -#define ASUS_WMI_DEVID_LED2 0x00020012 -#define ASUS_WMI_DEVID_LED3 0x00020013 -#define ASUS_WMI_DEVID_LED4 0x00020014 -#define ASUS_WMI_DEVID_LED5 0x00020015 -#define ASUS_WMI_DEVID_LED6 0x00020016 - -/* Backlight and Brightness */ -#define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */ -#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011 -#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 -#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 -#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ -#define ASUS_WMI_DEVID_LIGHTBAR 0x00050025 - -/* Misc */ -#define ASUS_WMI_DEVID_CAMERA 0x00060013 - -/* Storage */ -#define ASUS_WMI_DEVID_CARDREADER 0x00080013 - -/* Input */ -#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 -#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 - -/* Fan, Thermal */ -#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 -#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 - -/* Power */ -#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 - -/* Deep S3 / Resume on LID open */ -#define ASUS_WMI_DEVID_LID_RESUME 0x00120031 - -/* DSTS masks */ -#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 -#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 -#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 -#define ASUS_WMI_DSTS_USER_BIT 0x00020000 -#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 -#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF -#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 -#define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F - #define ASUS_FAN_DESC "cpu_fan" #define ASUS_FAN_MFUN 0x13 #define ASUS_FAN_SFUN_READ 0x06 @@ -302,8 +220,7 @@ static void asus_wmi_input_exit(struct asus_wmi *asus) asus->inputdev = NULL; } -static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, - u32 *retval) +int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) { struct bios_args args = { .arg0 = arg0, @@ -339,6 +256,7 @@ static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, return 0; } +EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) { diff --git a/include/linux/asus-wmi.h b/include/linux/asus-wmi.h new file mode 100644 index 000000000000..d8f4cc256aa3 --- /dev/null +++ b/include/linux/asus-wmi.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_ASUS_WMI_H +#define __LINUX_ASUS_WMI_H + +#include +#include + +/* WMI Methods */ +#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */ +#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */ +#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */ +#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */ +#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */ +#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */ +#define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */ +#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */ +#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */ +#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */ +#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */ +#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */ +#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */ +#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/ +#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */ +#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */ +#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */ +#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ +#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ +#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ + +#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE + +/* Wireless */ +#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001 +#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002 +#define ASUS_WMI_DEVID_CWAP 0x00010003 +#define ASUS_WMI_DEVID_WLAN 0x00010011 +#define ASUS_WMI_DEVID_WLAN_LED 0x00010012 +#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013 +#define ASUS_WMI_DEVID_GPS 0x00010015 +#define ASUS_WMI_DEVID_WIMAX 0x00010017 +#define ASUS_WMI_DEVID_WWAN3G 0x00010019 +#define ASUS_WMI_DEVID_UWB 0x00010021 + +/* Leds */ +/* 0x000200XX and 0x000400XX */ +#define ASUS_WMI_DEVID_LED1 0x00020011 +#define ASUS_WMI_DEVID_LED2 0x00020012 +#define ASUS_WMI_DEVID_LED3 0x00020013 +#define ASUS_WMI_DEVID_LED4 0x00020014 +#define ASUS_WMI_DEVID_LED5 0x00020015 +#define ASUS_WMI_DEVID_LED6 0x00020016 + +/* Backlight and Brightness */ +#define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */ +#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011 +#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 +#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 +#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ +#define ASUS_WMI_DEVID_LIGHTBAR 0x00050025 + +/* Misc */ +#define ASUS_WMI_DEVID_CAMERA 0x00060013 + +/* Storage */ +#define ASUS_WMI_DEVID_CARDREADER 0x00080013 + +/* Input */ +#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011 +#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012 + +/* Fan, Thermal */ +#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011 +#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012 + +/* Power */ +#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012 + +/* Deep S3 / Resume on LID open */ +#define ASUS_WMI_DEVID_LID_RESUME 0x00120031 + +/* DSTS masks */ +#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 +#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 +#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000 +#define ASUS_WMI_DSTS_USER_BIT 0x00020000 +#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 +#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF +#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 +#define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F + +#if defined(CONFIG_ASUS_WMI) || defined(CONFIG_ASUS_WMI_MODULE) +int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval); +#else +static inline int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, + u32 *retval) +{ + return -ENODEV; +} +#endif +#endif From patchwork Tue Oct 9 06:40:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Drake X-Patchwork-Id: 10632009 X-Patchwork-Delegate: jikos@jikos.cz Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6311613BB for ; Tue, 9 Oct 2018 06:41:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 55F7928B53 for ; Tue, 9 Oct 2018 06:41:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4A12728B60; Tue, 9 Oct 2018 06:41:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D4EEE28B58 for ; Tue, 9 Oct 2018 06:41:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726460AbeJIN41 (ORCPT ); Tue, 9 Oct 2018 09:56:27 -0400 Received: from mail-pl1-f194.google.com ([209.85.214.194]:44045 "EHLO mail-pl1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726468AbeJIN41 (ORCPT ); Tue, 9 Oct 2018 09:56:27 -0400 Received: by mail-pl1-f194.google.com with SMTP id p25-v6so299145pli.11 for ; Mon, 08 Oct 2018 23:41:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=endlessm-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=WAqxnc7+dpFcisPoGTfgDmr/ikCsXzwKKXIetAalypw=; b=IN/f0/Fbo9xTRMCO5fmGoszBdxQUyM9/DJUk3QTI6xGupUuK8yJwbJO/owBjz/P+NJ Dmt0hdgAN+OjT2Yv7DR2pck6IQWlbk0idoVFB+d/+gVMCamiQ9A/4W1Iiw6VbWhiWz26 Wqhr1mceyIdkqK26sOWczmOrEvNNif3mAG3GoXdLLzdqmf0LNmMHj3ZhA5sJBDWf4sRA V1A7NOFa2Z+GKWBxtnczQEtfSMNbnhB7B/0k/cEhJrufAwGA+zxIiHoxBU7LnPDAkh34 MrJxZD8O6tTHTOnKaxvVqrWyVbzXZjvZ7VDJX8McPsmOLWKE8A9DBZt8+BOAmTlD1g9N Tq+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=WAqxnc7+dpFcisPoGTfgDmr/ikCsXzwKKXIetAalypw=; b=s0zThCXIxUQj+aS3X5RkRNAul5xccGAzbk0FnKg/WV1/GIeif5stDSTD0p/2la+37E PzWlemTUYrsmFhjDrC+OYQnQMYxQkUYTxpRGQxqJ20xrIoXcYTfOwuvACcRqV0vWhBB0 hlHE8oW4DrpBkziEZuvVM0lDpV7k1DUiLXCMMsFeZCAAJ6XUeoK0yQPiNGLOcGThWoZj xTAp8kFSb00BcrJadZv4yP4rWAR+vGij9JCbjHrluDYxSOo/r+pAe/N2cILggxrrWB4M erhi0dSsOo/dNjvdkLUc8M8xEj4240wCBl5lrKPfBUp3bNZ4TY3tQON8aUTxbFDi8P6y UzxQ== X-Gm-Message-State: ABuFfogr9HZDqDBZrMgGkj5B2qJaqBQw9DcyHCD8RJr+dz7tyGhMPQAI JvjWA9xAMPT6Cpj/OtCR/IpywQ== X-Google-Smtp-Source: ACcGV636ycPvliOSyU/1pIVnwvmaVLle0DQV3z+WRttpDSdtQ9Ul7a/wqz5JMKYEhQp4bclj4wZ8Sg== X-Received: by 2002:a17:902:9b89:: with SMTP id y9-v6mr27290747plp.239.1539067263516; Mon, 08 Oct 2018 23:41:03 -0700 (PDT) Received: from limbo.local (125-227-158-176.HINET-IP.hinet.net. [125.227.158.176]) by smtp.gmail.com with ESMTPSA id 74-v6sm27455879pfx.182.2018.10.08.23.41.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Oct 2018 23:41:03 -0700 (PDT) From: Daniel Drake To: corentin.chary@gmail.com, andy.shevchenko@gmail.com Cc: acpi4asus-user@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, jikos@kernel.org, benjamin.tissoires@redhat.com, linux-input@vger.kernel.org, linux@endlessm.com Subject: [PATCH v3 2/2] HID: asus: only support backlight when it's not driven by WMI Date: Tue, 9 Oct 2018 14:40:56 +0800 Message-Id: <20181009064056.17478-2-drake@endlessm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181009064056.17478-1-drake@endlessm.com> References: <20181009064056.17478-1-drake@endlessm.com> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The Asus GL502VSK has the same 0B05:1837 keyboard as we've seen in several Republic of Gamers laptops. However, in this model, the keybard backlight control exposed by hid-asus has no effect on the keyboard backlight. Instead, the keyboard backlight is correctly driven by asus-wmi. With two keyboard backlight devices available (and only the acer-wmi one working), GNOME is picking the wrong one to drive in the UI. Avoid this problem by not creating the backlight interface when we detect a WMI-driven keyboard backlight. We have also tested Asus GL702VMK which does have the hid-asus backlight present, and it still works fine with this patch (WMI method call returns UNSUPPORTED_METHOD). A direct "depends on ASUS_WMI" is intentionally avoided so that HID_ASUS users who have ASUS_WMI=n will not quietly lose their HID_ASUS driver on a kernel upgrade. Signed-off-by: Daniel Drake Reviewed-by: Benjamin Tissoires --- Notes: v2: use asus-wmi driver to check WMI device status v3: avoid "depends on ASUS_WMI" drivers/hid/Kconfig | 1 + drivers/hid/hid-asus.c | 24 +++++++++++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 61e1953ff921..4287dfe2e58e 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -149,6 +149,7 @@ config HID_APPLEIR config HID_ASUS tristate "Asus" depends on LEDS_CLASS + depends on m || ASUS_WMI != m ---help--- Support for Asus notebook built-in keyboard and touchpad via i2c, and the Asus Republic of Gamers laptop keyboard special keys. diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c index 88a5672f42cd..c42af8511b38 100644 --- a/drivers/hid/hid-asus.c +++ b/drivers/hid/hid-asus.c @@ -26,6 +26,7 @@ * any later version. */ +#include #include #include #include @@ -349,6 +350,25 @@ static void asus_kbd_backlight_work(struct work_struct *work) hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret); } +/* WMI-based keyboard backlight LED control (via asus-wmi driver) takes + * precedence. We only activate HID-based backlight control when the + * WMI control is not available. + */ +static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev) +{ + u32 value; + int ret; + + ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, + ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value); + hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value); + + if (ret != 0) + return false; + + return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT); +} + static int asus_kbd_register_leds(struct hid_device *hdev) { struct asus_drvdata *drvdata = hid_get_drvdata(hdev); @@ -436,7 +456,9 @@ static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) drvdata->input = input; - if (drvdata->enable_backlight && asus_kbd_register_leds(hdev)) + if (drvdata->enable_backlight && + !asus_kbd_wmi_led_control_present(hdev) && + asus_kbd_register_leds(hdev)) hid_warn(hdev, "Failed to initialize backlight.\n"); return 0;