From patchwork Thu Jun 20 11:50:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maximilian Luz X-Patchwork-Id: 11006533 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 380C11986 for ; Thu, 20 Jun 2019 11:51:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2AA35283B2 for ; Thu, 20 Jun 2019 11:51:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1E974286D4; Thu, 20 Jun 2019 11:51:48 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham 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 B41A7286D6 for ; Thu, 20 Jun 2019 11:51:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726620AbfFTLvr (ORCPT ); Thu, 20 Jun 2019 07:51:47 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:37746 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726391AbfFTLvq (ORCPT ); Thu, 20 Jun 2019 07:51:46 -0400 Received: by mail-wr1-f66.google.com with SMTP id v14so2729956wrr.4; Thu, 20 Jun 2019 04:51:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Qt7ilRYrtFffaWJJ/RMaWnUnJ4ybJEaYlbppHjgR3/w=; b=dsUJBFO9Oe0lw18G3zzN8ReHz6MllMbZl+UfJn832wzekDiq2PdnqEoPMqVD8JvSEl QQBHiafpl2KY6uAL2KQqIP5W8EnPda/yRczvC8UD0ll8t3vG+Tbh9sd40+3/Vsa9CVYN eYMh384MuWFj1Q+/iHYWV0f8bkbwjcXtFqzCVzJYH0oMoogX/zHIgTl6kp6FZdO7EsfH xMAZC1XlvELs+lf5YRvDDxTWNSgzOfhUjoOXTGdxfwvW0YGVfH5WXlbZmUz1MO5sdaBU /uW5tTklpOuCTxzMdPtFYyI/woPAFnL/Hwi4iPonj4j95KhVt08/G3s53iFS1IWVC8KZ GHtg== 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:mime-version:content-transfer-encoding; bh=Qt7ilRYrtFffaWJJ/RMaWnUnJ4ybJEaYlbppHjgR3/w=; b=UyDv+amni+fNu4NIe/RKQAPEzCB+2a8KH8Yr+CI8yz9AZk2D0tNsCj6OpScKl8UUR7 fmBwbtoxdOYWzwRp3Yi5YXMmnQWpPYzC/bj9/wQhUYWF5qYgJHCw8USzfmrCkV8/ownJ sHJlBzZ72uclgNmwLbEtVjUR2mzfbfXbhGSTWuxoitrY9aNjIPe2B3OXMD2GPHcfrbqJ wDmfH/wGMocXt6t6nzBbvpQhFtgukuRMajTbhb8BR4SETKsEK6R6mDI2BbAkVBH1CHrL m33VdGoulEajH6HzLa1AicHO4Shg+Jxd+R9oHzsrT6N2X3T9c11rJG2KhLqNqVaCboK8 YpPg== X-Gm-Message-State: APjAAAU28HSa2dYZNQ463E/7m16tcBJdvaGQRGn53Y4BGQ34M7RAAr1H dIiWaO7bhTt/Uq9Vq+aGYdeBKcT/ X-Google-Smtp-Source: APXvYqzbWsMTnvcMtipSV2GcVbZV7WXLL22fweAMmTaWVlAP6MqyVqTJ2iO+tYKEiOeX2qDrsN4jYQ== X-Received: by 2002:a5d:53ca:: with SMTP id a10mr29124539wrw.131.1561031505046; Thu, 20 Jun 2019 04:51:45 -0700 (PDT) Received: from xws.fritz.box (pD9E5A621.dip0.t-ipconnect.de. [217.229.166.33]) by smtp.gmail.com with ESMTPSA id s7sm7918213wmc.2.2019.06.20.04.51.43 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 20 Jun 2019 04:51:44 -0700 (PDT) From: Maximilian Luz Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, platform-driver-x86@vger.kernel.org, Dmitry Torokhov , Hans de Goede , Chen Yu , Darren Hart , Andy Shevchenko , Benjamin Tissoires , Maximilian Luz Subject: [PATCH 1/2] platform: Fix device check for surfacepro3_button Date: Thu, 20 Jun 2019 13:50:55 +0200 Message-Id: <20190620115056.4169-2-luzmaximilian@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190620115056.4169-1-luzmaximilian@gmail.com> References: <20190620115056.4169-1-luzmaximilian@gmail.com> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) 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 Do not use the surfacepro3_button driver on newer Microsoft Surface models, only use it on the Surface Pro 3 and 4. Newer models (5th, 6th and possibly future generations) use the same device as the Surface Pro 4 to represent their volume and power buttons (MSHW0040), but their acutal implementation is significantly different. This patch ensures that the surfacepro3_button driver is only used on the Pro 3 and 4 models, allowing a different driver to bind on other models. Signed-off-by: Maximilian Luz --- drivers/platform/x86/surfacepro3_button.c | 38 +++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/platform/x86/surfacepro3_button.c b/drivers/platform/x86/surfacepro3_button.c index 47c6d000465a..0e2c7dfafd9f 100644 --- a/drivers/platform/x86/surfacepro3_button.c +++ b/drivers/platform/x86/surfacepro3_button.c @@ -20,6 +20,12 @@ #define SURFACE_BUTTON_OBJ_NAME "VGBI" #define SURFACE_BUTTON_DEVICE_NAME "Surface Pro 3/4 Buttons" +#define MSHW0040_DSM_REVISION 0x01 +#define MSHW0040_DSM_GET_OMPR 0x02 // get OEM Platform Revision +static const guid_t MSHW0040_DSM_UUID = + GUID_INIT(0x6fd05c69, 0xcde3, 0x49f4, 0x95, 0xed, 0xab, 0x16, 0x65, + 0x49, 0x80, 0x35); + #define SURFACE_BUTTON_NOTIFY_TABLET_MODE 0xc8 #define SURFACE_BUTTON_NOTIFY_PRESS_POWER 0xc6 @@ -142,6 +148,34 @@ static int surface_button_resume(struct device *dev) } #endif +/* + * Surface Pro 4 and Surface Book 2 / Surface Pro 2017 use the same device + * ID (MSHW0040) for the power/volume buttons. Make sure this is the right + * device by checking for the _DSM method and OEM Platform Revision. + */ +static int surface_button_check_MSHW0040(struct acpi_device *dev) +{ + acpi_handle handle = dev->handle; + union acpi_object *result; + u64 oem_platform_rev = 0; + + // get OEM platform revision + result = acpi_evaluate_dsm_typed(handle, &MSHW0040_DSM_UUID, + MSHW0040_DSM_REVISION, + MSHW0040_DSM_GET_OMPR, + NULL, ACPI_TYPE_INTEGER); + + if (result) { + oem_platform_rev = result->integer.value; + ACPI_FREE(result); + } + + dev_dbg(&dev->dev, "OEM Platform Revision %llu\n", oem_platform_rev); + + return oem_platform_rev == 0 ? 0 : -ENODEV; +} + + static int surface_button_add(struct acpi_device *device) { struct surface_button *button; @@ -154,6 +188,10 @@ static int surface_button_add(struct acpi_device *device) strlen(SURFACE_BUTTON_OBJ_NAME))) return -ENODEV; + error = surface_button_check_MSHW0040(device); + if (error) + return error; + button = kzalloc(sizeof(struct surface_button), GFP_KERNEL); if (!button) return -ENOMEM; From patchwork Thu Jun 20 11:50:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maximilian Luz X-Patchwork-Id: 11006541 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 7AD3514E5 for ; Thu, 20 Jun 2019 11:51:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6EBA0280FC for ; Thu, 20 Jun 2019 11:51:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 63018286DB; Thu, 20 Jun 2019 11:51:56 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,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 D5C8D286D4 for ; Thu, 20 Jun 2019 11:51:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731675AbfFTLvv (ORCPT ); Thu, 20 Jun 2019 07:51:51 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:36340 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731670AbfFTLvu (ORCPT ); Thu, 20 Jun 2019 07:51:50 -0400 Received: by mail-wm1-f66.google.com with SMTP id u8so2865560wmm.1; Thu, 20 Jun 2019 04:51:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ORab8cFgeuwHnA+7pmkFs/ZlJ8ccsngeYWedgpASCHk=; b=I6R2Opdo9zbRnHRKSoyLtt8UAbKgYaQ60ecuTP81tZixYrtwCl99zRz2gwrnA2zXIh GEoYQyyHTeX5PNcdQ2DMGayxJqyRKAJTqMGYImJC8gcY3GvTLeE1uKQ3a4Xu2lw9a8Ec 68E31KHU8D6SDLjzLgOh6vtsPqxpTV0OXO31NR/gbZpcTfQdN4yvbdhADHUXJcc3xFSB xXyIcHkTSYOPqvf9ZngXqMMSWZw7O7CzMco6eyBKdL9aHR69oW+dSPcU2UMX2W6sxQ7R XvLIOXccSA7GvMQjk7gpJOhj/gb36fsqvPcoOev8yC3e/lOyeLZjSGhaIDD8q3aXa/Lt F8WQ== 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:mime-version:content-transfer-encoding; bh=ORab8cFgeuwHnA+7pmkFs/ZlJ8ccsngeYWedgpASCHk=; b=OSFyK2a0FsjzvvGJCYNZu8IeZWMQDLxNs0019tuz3YmoMl9AqUnEq9q2SCzvn/bhI3 YZaieLnL90OQY+uFiSFGP1K+DzdGsjEBMMpj435K3EkUehH75XB1xhm2FV9sy4rdFxwe bV8NEdQw49zuZXUO5zU9ro5mkGu/ImZ6H+K22dMqjzcuMT/TDDPvUvsXFdvWwcE1bp90 ntBPjBVMFa0vrGNFdUVJSI237UJR1F+MlmlTpYplmbZpzLgY0OuwVv/qXTdjYdyE+qgB as42ZCIwtUnxWQ5SBRMSz1C0tIENOTZ4F9qJ5GlF5J7j39kKY4vONTzgZMe8Z/LC/77e F2gA== X-Gm-Message-State: APjAAAUnL0saxLgINrNEIXOiNRNKQamZiTzw14m0wv51aAiVHl+M5m7N ewYzUHlCXKpOJTxKy7CgGWNfBWkM X-Google-Smtp-Source: APXvYqxvJMS5+kvCfoIiJYNPo5pWG/4WPldX2JmydiO7a24R68REIABaduaKJRN9BwrkSreMIAvSIw== X-Received: by 2002:a1c:1947:: with SMTP id 68mr2588474wmz.171.1561031507422; Thu, 20 Jun 2019 04:51:47 -0700 (PDT) Received: from xws.fritz.box (pD9E5A621.dip0.t-ipconnect.de. [217.229.166.33]) by smtp.gmail.com with ESMTPSA id s7sm7918213wmc.2.2019.06.20.04.51.46 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 20 Jun 2019 04:51:46 -0700 (PDT) From: Maximilian Luz Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, platform-driver-x86@vger.kernel.org, Dmitry Torokhov , Hans de Goede , Chen Yu , Darren Hart , Andy Shevchenko , Benjamin Tissoires , Maximilian Luz Subject: [PATCH 2/2] input: soc_button_array for newer surface devices Date: Thu, 20 Jun 2019 13:50:56 +0200 Message-Id: <20190620115056.4169-3-luzmaximilian@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190620115056.4169-1-luzmaximilian@gmail.com> References: <20190620115056.4169-1-luzmaximilian@gmail.com> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) 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 Power and volume button support for 5th and 6th genration Microsoft Surface devices via soc_button_array. Note that these devices use the same MSHW0040 device as on the Surface Pro 4, however the implementation is different (GPIOs vs. ACPI notifications). Thus some checking is required to ensure we only load this driver on the correct devices. Signed-off-by: Maximilian Luz --- drivers/input/misc/soc_button_array.c | 134 +++++++++++++++++++++++--- 1 file changed, 122 insertions(+), 12 deletions(-) diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c index 5e59f8e57f8e..157f53a2bd51 100644 --- a/drivers/input/misc/soc_button_array.c +++ b/drivers/input/misc/soc_button_array.c @@ -25,6 +25,17 @@ struct soc_button_info { bool wakeup; }; +/** + * struct soc_device_data - driver data for different device types + * @button_info: specifications of buttons, if NULL specification is assumed to + * be present in _DSD + * @check: device-specific check (NULL means all will be accepted) + */ +struct soc_device_data { + struct soc_button_info *button_info; + int (*check)(struct device *dev); +}; + /* * Some of the buttons like volume up/down are auto repeat, while others * are not. To support both, we register two platform devices, and put @@ -310,6 +321,7 @@ static int soc_button_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; const struct acpi_device_id *id; + struct soc_device_data *device_data; struct soc_button_info *button_info; struct soc_button_data *priv; struct platform_device *pd; @@ -320,18 +332,20 @@ static int soc_button_probe(struct platform_device *pdev) if (!id) return -ENODEV; - if (!id->driver_data) { + device_data = (struct soc_device_data *)id->driver_data; + if (device_data && device_data->check) { + error = device_data->check(dev); + if (error) + return error; + } + + if (device_data && device_data->button_info) { + button_info = (struct soc_button_info *) + device_data->button_info; + } else { button_info = soc_button_get_button_info(dev); if (IS_ERR(button_info)) return PTR_ERR(button_info); - } else { - button_info = (struct soc_button_info *)id->driver_data; - } - - error = gpiod_count(dev, NULL); - if (error < 0) { - dev_dbg(dev, "no GPIO attached, ignoring...\n"); - return -ENODEV; } priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); @@ -357,12 +371,32 @@ static int soc_button_probe(struct platform_device *pdev) if (!priv->children[0] && !priv->children[1]) return -ENODEV; - if (!id->driver_data) + if (!device_data || !device_data->button_info) devm_kfree(dev, button_info); return 0; } + +static int soc_device_check_generic(struct device *dev) +{ + int gpios; + + gpios = gpiod_count(dev, NULL); + if (gpios < 0) { + dev_dbg(dev, "no GPIO attached, ignoring...\n"); + return -ENODEV; + } + + return 0; +} + +static struct soc_device_data soc_device_ACPI0011 = { + .button_info = NULL, + .check = soc_device_check_generic, +}; + + /* * Definition of buttons on the tablet. The ACPI index of each button * is defined in section 2.8.7.2 of "Windows ACPI Design Guide for SoC @@ -377,9 +411,85 @@ static struct soc_button_info soc_button_PNP0C40[] = { { } }; +static struct soc_device_data soc_device_PNP0C40 = { + .button_info = soc_button_PNP0C40, + .check = soc_device_check_generic, +}; + + +/* + * Special device check for Surface Book 2 and Surface Pro (2017). + * Both, the Surface Pro 4 (surfacepro3_button.c) and the above mentioned + * devices use MSHW0040 for power and volume buttons, however the way they + * have to be addressed differs. Make sure that we only load this drivers + * for the correct devices by checking the OEM Platform Revision provided by + * the _DSM method. + */ +#define MSHW0040_DSM_REVISION 0x01 +#define MSHW0040_DSM_GET_OMPR 0x02 // get OEM Platform Revision +static const guid_t MSHW0040_DSM_UUID = + GUID_INIT(0x6fd05c69, 0xcde3, 0x49f4, 0x95, 0xed, 0xab, 0x16, 0x65, + 0x49, 0x80, 0x35); + +static int soc_device_check_MSHW0040(struct device *dev) +{ + acpi_handle handle = ACPI_HANDLE(dev); + union acpi_object *result; + u64 oem_platform_rev = 0; + int gpios; + + // get OEM platform revision + result = acpi_evaluate_dsm_typed(handle, &MSHW0040_DSM_UUID, + MSHW0040_DSM_REVISION, + MSHW0040_DSM_GET_OMPR, NULL, + ACPI_TYPE_INTEGER); + + if (result) { + oem_platform_rev = result->integer.value; + ACPI_FREE(result); + } + + if (oem_platform_rev == 0) + return -ENODEV; + + dev_dbg(dev, "OEM Platform Revision %llu\n", oem_platform_rev); + + /* + * We are _really_ expecting GPIOs here. If we do not get any, this + * means the GPIO driver has not been loaded yet (which can happen). + * Try again later. + */ + gpios = gpiod_count(dev, NULL); + if (gpios < 0) + return -EAGAIN; + + return 0; +} + +/* + * Button infos for Microsoft Surface Book 2 and Surface Pro (2017). + * Obtained from DSDT/testing. + */ +static struct soc_button_info soc_button_MSHW0040[] = { + { "power", 0, EV_KEY, KEY_POWER, false, true }, + { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false }, + { "volume_down", 4, EV_KEY, KEY_VOLUMEDOWN, true, false }, + { } +}; + +static struct soc_device_data soc_device_MSHW0040 = { + .button_info = soc_button_MSHW0040, + .check = soc_device_check_MSHW0040, +}; + + static const struct acpi_device_id soc_button_acpi_match[] = { - { "PNP0C40", (unsigned long)soc_button_PNP0C40 }, - { "ACPI0011", 0 }, + { "PNP0C40", (unsigned long)&soc_device_PNP0C40 }, + { "ACPI0011", (unsigned long)&soc_device_ACPI0011 }, + + /* Microsoft Surface Devices (5th and 6th generation) */ + { "MSHW0040", (unsigned long)&soc_device_MSHW0040 }, + { } };