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=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 82DA6C12002 for ; Wed, 21 Jul 2021 12:56:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55A576120C for ; Wed, 21 Jul 2021 12:56:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233417AbhGUMQP (ORCPT ); Wed, 21 Jul 2021 08:16:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:56918 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232654AbhGUMQO (ORCPT ); Wed, 21 Jul 2021 08:16:14 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id 4CE136120A for ; Wed, 21 Jul 2021 12:56:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626872207; bh=GYfMhgITFSWMcC+xxPbm1/G4r97HAPVCcP2/MqnJbi8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=T+49BfFUVIB4GGZ2OB37DEAWc0UCz57TFQYpScc+BVg1btpY8e1hU9jeyZSW7CoTT dsGI3j0tljUqdFlZld+owHotLJnwV+6XZq2M6xbcu8GEaX//kqY8COiI+1yG9sYkpi Bu0Rhb81Scn6qwn7aqD3TgDwGj/WzEyGR5bQydR3gWcA5w7JKiz+AtX/T8ICb3fuXG 3EleGhYI3TQD/dibgxhAWBPN8fKlQZvwk6FpFv1bWjNE871/5kvv0+G56PksbIkAok m8gKDV3LoWzWGypkDCpawYrYM5HqyF9sW7DhSRL4y+yte/q9nAIvW0pEICH/087PAT f/ZFa0NeytaIA== From: bugzilla-daemon@bugzilla.kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 213579] Clevo NH55HJ (intel tigerlake) touchpad support (GPIO can't be used as IRQ) Date: Wed, 21 Jul 2021 12:56:47 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Platform_x86 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: andy.shevchenko@gmail.com X-Bugzilla-Status: NEEDINFO X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D213579 --- Comment #18 from Andy Shevchenko (andy.shevchenko@gmail.com) --- Citing the hardware level documentation: "Each GPIO pad ownership assignment is pre-determined via OEM system configuration through BIOS, soft strap and/or embedded subsystems=E2=80=99 = firmware settings with corresponding pin list documentation. ... In summary the pad ownership bit is used to determine: =EF=82=B7 GPIO input event notification/status update to the subsystem ow= ning the pad o setting of Host=E2=80=99s various interrupt status bits ... ... PAD Ownership (PAD_OWN) This register can be written by [Firmware] only. ... 00 =3D Host software (ACPI Mode or GPIO Driver Mode) has ownership of the p= ad. In Host GPIO Driver Mode (refer to HOSTSW_OWN), GPIO input event update is lim= ited to GPI_STS update only. While in Host ACPI Mode, updates are limited to GPI_GPE_STS, GPI_NMI_STS and/or GPI_SMI_STS." Sorry, but OEM has to fix this. I love to know how Windows works around thi= s. If anybody has that information, please share. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=