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 6D411C4708D for ; Tue, 3 Jan 2023 18:40:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237827AbjACSkN (ORCPT ); Tue, 3 Jan 2023 13:40:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238073AbjACSj7 (ORCPT ); Tue, 3 Jan 2023 13:39:59 -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 D620013DE8; Tue, 3 Jan 2023 10:39:50 -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 8FD40B80EBF; Tue, 3 Jan 2023 18:39:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 694E8C433D2; Tue, 3 Jan 2023 18:39:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672771188; bh=1sB5EN2qD8GrQKjdJZrnAalkGApHEBaqO3LLSQoUEKU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IsJSq2HFa5H6ZfeLCecWgA8G5yupVMD38GACWcFBMLrCV7+HlNpv0ukGJClydJ3LQ YZOtKapLat11oSzVpyDY+25jLQyuvu4jtjt/xga+7yk6X/DLPDeV8Jvtirwbp4bPia QD/mRrwwVIPIhhaLTlXWqHa5QIlE43HV+GzQkpWyxre6xzYGscZIc6htaehsBde6Dt 59pf4o5vIrS6VbR6OVwq8gXsGFn6yGQbauQLnNZ4ukIwrR8sCm+eVE3JRsu6NDOlFV 5nyjTiPykGvC31TKz0wD5dLRrRaYGJADWLgGvzonC/Nhe12arphZcnZJFSOFIj6HMH VlWB5veT6x6vA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mario Limonciello , Hans de Goede , "Rafael J . Wysocki" , Sasha Levin , harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, alexander.deucher@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, roman.li@amd.com, aurabindo.pillai@amd.com, mdaenzer@redhat.com, Jerry.Zuo@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.1 04/10] drm/amd/display: Report to ACPI video if no panels were found Date: Tue, 3 Jan 2023 13:39:28 -0500 Message-Id: <20230103183934.2022663-4-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230103183934.2022663-1-sashal@kernel.org> References: <20230103183934.2022663-1-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: Mario Limonciello [ Upstream commit c573e240609ff781a0246c0c8c8351abd0475287 ] On desktop APUs amdgpu doesn't create a native backlight device as no eDP panels are found. However if the BIOS has reported backlight control methods in the ACPI tables then an acpi_video0 backlight device will be made 8 seconds after boot. This has manifested in a power slider on a number of desktop APUs ranging from Ryzen 5000 through Ryzen 7000 on various motherboard manufacturers. To avoid this, report to the acpi video detection that the system does not have any panel connected in the native driver. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1783786 Reported-by: Hans de Goede Signed-off-by: Mario Limonciello Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 512c32327eb1..b73f61ac5dd5 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -4371,6 +4371,10 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev) amdgpu_set_panel_orientation(&aconnector->base); } + /* If we didn't find a panel, notify the acpi video detection */ + if (dm->adev->flags & AMD_IS_APU && dm->num_of_edps == 0) + acpi_video_report_nolcd(); + /* Software is initialized. Now we can register interrupt handlers. */ switch (adev->asic_type) { #if defined(CONFIG_DRM_AMD_DC_SI) -- 2.35.1