From nobody Wed Dec 17 21:06:44 2025 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 A8292C77B72 for ; Mon, 17 Apr 2023 10:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230484AbjDQKx0 (ORCPT ); Mon, 17 Apr 2023 06:53:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230282AbjDQKwg (ORCPT ); Mon, 17 Apr 2023 06:52:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D69985FE8 for ; Mon, 17 Apr 2023 03:51:36 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 63FE96223B for ; Mon, 17 Apr 2023 10:48:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92A31C433EF; Mon, 17 Apr 2023 10:48:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1681728500; bh=Myep5m/XBEvKs0wTrDcqM9pMLIWqZt/FGVgHVGRjfRc=; h=From:To:Cc:Subject:Date:From; b=sKuIA6NbgHFxeW93bS9xscAlZLOFvfHBeWJTCp57Q/68f7zXp8Gt3M1e/OetfJXmu XgcUowxWisA+5dWAyouBeaTyVoRx/OavvtTrjd6aSaAsf0zD8SdsQHcrDMRdBa811u D2bsidQsP6y1e1BFr0jKSoDOXUPdkqZ1uaNhEKhXsPbeIlG+Y1LH4uT/vooprljnjC QR9pbi3oWwh5tJ84W39B8+00gKAjzFTaR/oUwfReYZ/ncjn5nTPcxBJrKb3ZPm5ADc OfGU1++Y9/T0dTS6tBGWC3isR9n0irXPqmbwhl9J/K4/pK+zqVdeBBFUiMrvgSDkNy MwesziC/6ETCw== From: "Jiri Slaby (SUSE)" To: rafael@kernel.org Cc: linux-kernel@vger.kernel.org, Hans de Goede , Jiri Slaby , "Rafael J . Wysocki" Subject: [PATCH] ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 Date: Mon, 17 Apr 2023 12:48:17 +0200 Message-Id: <20230417104817.30254-1-jirislaby@kernel.org> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Hans de Goede The Lenovo Ideapad Z470 predates Windows 8, so it defaults to using acpi_video for backlight control. But this is not functional on this model. Add a DMI quirk to use the native backlight interface which works. Link: https://bugzilla.suse.com/show_bug.cgi?id=3D1208724 Signed-off-by: Jiri Slaby (SUSE) Cc: Hans de Goede Cc: Rafael J. Wysocki Reviewed-by: Hans de Goede --- drivers/acpi/video_detect.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 69ef2d9710c2..af5cea005f54 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -459,6 +459,15 @@ static const struct dmi_system_id video_detect_dmi_tab= le[] =3D { DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"), }, }, + { + /* https://bugzilla.suse.com/show_bug.cgi?id=3D1208724 */ + .callback =3D video_detect_force_native, + /* Lenovo Ideapad Z470 */ + .matches =3D { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Z470"), + }, + }, { /* https://bugzilla.redhat.com/show_bug.cgi?id=3D1187004 */ .callback =3D video_detect_force_native, --=20 2.40.0