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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 E8B02C10F14 for ; Thu, 3 Oct 2019 17:16:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ABD8520865 for ; Thu, 3 Oct 2019 17:16:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570122998; bh=6BtUQ4/V1KszXMNqYKGNsb4im93ln/f6XS19k9g+gEQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Oe1xt6VdUCQb1EJYgeTZ0qh+SFr+TRWnSWRry/7tEMnjvFI/LLGOciYseHLiTlZy8 Kst0ZaASO2J68vvkHOckaU1cadQvc/y5O/E+InP7eFmztSjDX1zGcfSfZCs0CymNPx tCz9iDGq+LKP1cSoHhBXwlFJYmXFjE7pXprX6x3c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389570AbfJCQX7 (ORCPT ); Thu, 3 Oct 2019 12:23:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:53282 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390650AbfJCQXy (ORCPT ); Thu, 3 Oct 2019 12:23:54 -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 9F67A2054F; Thu, 3 Oct 2019 16:23:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570119834; bh=6BtUQ4/V1KszXMNqYKGNsb4im93ln/f6XS19k9g+gEQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LGIoa2+ZrNUBPc3g+EmFSUQeDNfTxmqWOJc3aRpCmnhy3u+LrtkEXEjjGbREhJyEf 67LwsiKip6bpKDkSpoSQQV32D3glbsVeBEkemhOocMz1B2rwO0HmfxH63zpPFv8TmO aocIZeTKHH3e9bqF/Bnfjuz3NXTo0tq8omSkDpBQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai-Heng Feng , Alex Deucher Subject: [PATCH 4.19 211/211] drm/amd/display: Restore backlight brightness after system resume Date: Thu, 3 Oct 2019 17:54:37 +0200 Message-Id: <20191003154530.869163725@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154447.010950442@linuxfoundation.org> References: <20191003154447.010950442@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: Kai-Heng Feng commit bb264220d9316f6bd7c1fd84b8da398c93912931 upstream. Laptops with AMD APU doesn't restore display backlight brightness after system resume. This issue started when DC was introduced. Let's use BL_CORE_SUSPENDRESUME so the backlight core calls update_status callback after system resume to restore the backlight level. Tested on Dell Inspiron 3180 (Stoney Ridge) and Dell Latitude 5495 (Raven Ridge). Cc: Signed-off-by: Kai-Heng Feng Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1462,6 +1462,7 @@ static int amdgpu_dm_backlight_get_brigh } static const struct backlight_ops amdgpu_dm_backlight_ops = { + .options = BL_CORE_SUSPENDRESUME, .get_brightness = amdgpu_dm_backlight_get_brightness, .update_status = amdgpu_dm_backlight_update_status, };