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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B128CC433F5 for ; Fri, 25 Mar 2022 15:13:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356584AbiCYPP2 (ORCPT ); Fri, 25 Mar 2022 11:15:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376858AbiCYPNl (ORCPT ); Fri, 25 Mar 2022 11:13:41 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC4A1DA6FE; Fri, 25 Mar 2022 08:10:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 24EDAB82833; Fri, 25 Mar 2022 15:10:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 801AAC340E9; Fri, 25 Mar 2022 15:10:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1648221027; bh=Ugr3Tis7R5v9mJReP/aoaxVEShg8W48rXk635+mcSrM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NH2WAYSg2dGJtnu4brC565+70Fdmbt+j9AT//DsnSkTGBEESAFmAVc4R/v5vnUA30 N4/93cbg3nEIKWHJIVTV9NFQ6B9BcUx9hI5j5iKoWPyMbdAgwAd98yylVzyLWjLQql GjJ9dS/OjRbVHsNHM9mB6CJ7zsXiJCzIHEe7jbNU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Werner Sembach , "Rafael J. Wysocki" Subject: [PATCH 5.10 31/38] ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU Date: Fri, 25 Mar 2022 16:05:15 +0100 Message-Id: <20220325150420.641367363@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220325150419.757836392@linuxfoundation.org> References: <20220325150419.757836392@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Werner Sembach commit c844d22fe0c0b37dc809adbdde6ceb6462c43acf upstream. Clevo NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2 have both a working native and video interface. However the default detection mechanism first registers the video interface before unregistering it again and switching to the native interface during boot. This results in a dangling SBIOS request for backlight change for some reason, causing the backlight to switch to ~2% once per boot on the first power cord connect or disconnect event. Setting the native interface explicitly circumvents this buggy behaviour by avoiding the unregistering process. Signed-off-by: Werner Sembach Cc: All applicable Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/video_detect.c | 75 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -409,6 +409,81 @@ static const struct dmi_system_id video_ DMI_MATCH(DMI_PRODUCT_NAME, "GA503"), }, }, + /* + * Clevo NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2 have both a + * working native and video interface. However the default detection + * mechanism first registers the video interface before unregistering + * it again and switching to the native interface during boot. This + * results in a dangling SBIOS request for backlight change for some + * reason, causing the backlight to switch to ~2% once per boot on the + * first power cord connect or disconnect event. Setting the native + * interface explicitly circumvents this buggy behaviour, by avoiding + * the unregistering process. + */ + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xRU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), + DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xRU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"), + DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xRU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Notebook"), + DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xRU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), + DMI_MATCH(DMI_BOARD_NAME, "AURA1501"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xRU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), + DMI_MATCH(DMI_BOARD_NAME, "EDUBOOK1502"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xNU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), + DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xNU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"), + DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "Clevo NL5xNU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Notebook"), + DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), + }, + }, /* * Desktops which falsely report a backlight and which our heuristics