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 44747C433FE for ; Sat, 19 Nov 2022 02:27:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235744AbiKSC1s (ORCPT ); Fri, 18 Nov 2022 21:27:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235718AbiKSCZX (ORCPT ); Fri, 18 Nov 2022 21:25:23 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E29EB80997; Fri, 18 Nov 2022 18:15:55 -0800 (PST) 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 9E7E9B82676; Sat, 19 Nov 2022 02:15:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85749C433D7; Sat, 19 Nov 2022 02:15:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668824153; bh=/UNhONuEPMfoFhB7C+3F3s8jtVtjM7CFczWkPwqlbr8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GRGhOh+IeNemx2yvsOT/LAfM1m6RsP4bI5oU3PC+KOff7LBAqiKlc0spIa5E17nZ+ ggzXr/L64PcsI6Y2PCbg5KFsjLoMJJo+7PDw0MTE2t8qqTvKw2PRhsBW63iYWmtZ6F VqTgCrnbjRuXXo4Hff09l4Z+AEPbSXR4sw+rQGMmBeN4z5WVHKXnnJsUdAS2Xl2yEI UyoFATpOG3fOq8iG5cw9uXFdwdT2yIoACK95l/DPlkE8h95VqLy/CdM1tugBJq/Xxh mrgo/UKep4NQ8Kju9vmcPpRkLUtOcMRcE6pwA1tvHTUxQN6z11lbzRiJYLHRKlKxJm oa4s5YqY0qZmQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hans de Goede , Iris , Daniel Dadap , Sasha Levin , rafael@kernel.org, linux-acpi@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 06/11] ACPI: video: Add backlight=native DMI quirk for Dell G15 5515 Date: Fri, 18 Nov 2022 21:15:38 -0500 Message-Id: <20221119021543.1775315-6-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221119021543.1775315-1-sashal@kernel.org> References: <20221119021543.1775315-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hans de Goede [ Upstream commit f46acc1efd4b5846de9fa05f966e504f328f34a6 ] The Dell G15 5515 has the WMI interface (and WMI call returns) expected by the nvidia-wmi-ec-backlight interface. But the backlight class device registered by the nvidia-wmi-ec-backlight driver does not actually work. The amdgpu_bl0 native GPU backlight class device does actually work, add a backlight=native DMI quirk for this. Reported-by: Iris Reviewed-by: Daniel Dadap Signed-off-by: Hans de Goede --- Changes in v2: - Add a comment that this needs to be revisited when dynamic-mux support gets added (suggested by: Daniel Dadap) Signed-off-by: Sasha Levin --- drivers/acpi/video_detect.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index e5518b88f710..f514b16a5c23 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -527,6 +527,20 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), }, }, + /* + * Models which have nvidia-ec-wmi support, but should not use it. + * Note this indicates a likely firmware bug on these models and should + * be revisited if/when Linux gets support for dynamic mux mode. + */ + { + .callback = video_detect_force_native, + /* Dell G15 5515 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"), + }, + }, + /* * Desktops which falsely report a backlight and which our heuristics * for this do not catch. -- 2.35.1