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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 65EAFC433E0 for ; Fri, 19 Jun 2020 15:47:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F7ED20B80 for ; Fri, 19 Jun 2020 15:47:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592581656; bh=WalAKmd2wJyO633C/RRtz+BX1RofonbPiTJF5TW5uS0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=m1KoXc0LbQzG/GbinEuI75bLFtmoLt/1JKuxg/3PdQc6QvI6upCNXo8gtomQIfuzU a8FZU7aRSmkAWx7hh4pT5cppdkfB8KuZOquENtAzae3ow1PNUBu5EGNZQcMopepNK7 7RZyT13xECkjyLLiY7S8kLXRLwU7olQvB7dyOuR0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405299AbgFSPre (ORCPT ); Fri, 19 Jun 2020 11:47:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:57734 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404243AbgFSP0A (ORCPT ); Fri, 19 Jun 2020 11:26:00 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5658C217A0; Fri, 19 Jun 2020 15:25:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592580359; bh=WalAKmd2wJyO633C/RRtz+BX1RofonbPiTJF5TW5uS0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ERrqVbBnAaG116s2pJ5psJJfXgwajYepBP2ORRg7973TUwfLDnxu9cb4r9nm3h2w5 FiGYXdQH9+5tHKMz+/ydB2ehC2htCE1g2yvX1HUt4Hyyp/wlt3gS9Rus16SvxG4IbI nPYsabfwEh9wpE6sIH3uyuYrSG2dnGgykHjcqcg4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans de Goede , Paul Menzel , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 5.7 220/376] ACPI: video: Use native backlight on Acer TravelMate 5735Z Date: Fri, 19 Jun 2020 16:32:18 +0200 Message-Id: <20200619141720.740932103@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619141710.350494719@linuxfoundation.org> References: <20200619141710.350494719@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Paul Menzel [ Upstream commit c41c36e900a337b4132b12ccabc97f5578248b44 ] Currently, changing the brightness of the internal display of the Acer TravelMate 5735Z does not work. Pressing the function keys or changing the slider, GNOME Shell 3.36.2 displays the OSD (five steps), but the brightness does not change. The Acer TravelMate 5735Z shipped with Windows 7 and as such does not trigger our "win8 ready" heuristic for preferring the native backlight interface. Still ACPI backlight control doesn't work on this model, where as the native (intel_video) backlight interface does work by adding `acpi_backlight=native` or `acpi_backlight=none` to Linux’ command line. So, add a quirk to force using native backlight control on this model. Link: https://bugzilla.kernel.org/show_bug.cgi?id=207835 Reviewed-by: Hans de Goede Signed-off-by: Paul Menzel Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/video_detect.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index b4994e50608d..2499d7e3c710 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -361,6 +361,16 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "JV50"), }, }, + { + /* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */ + .callback = video_detect_force_native, + .ident = "Acer TravelMate 5735Z", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"), + DMI_MATCH(DMI_BOARD_NAME, "BA51_MV"), + }, + }, /* * Desktops which falsely report a backlight and which our heuristics -- 2.25.1