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 0CBBEC4167B for ; Mon, 11 Dec 2023 13:55:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343817AbjLKNza (ORCPT ); Mon, 11 Dec 2023 08:55:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343927AbjLKNy7 (ORCPT ); Mon, 11 Dec 2023 08:54:59 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F6092729 for ; Mon, 11 Dec 2023 05:53:46 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5FAB8C433D9; Mon, 11 Dec 2023 13:53:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1702302825; bh=NXBnlBnAK5VH1xe11LnSdcoEO4WXNeFKs998K6Ux3e8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i1/Q5I/zK/7OQth177uZ0xyTpbId58dSH9DEokQGi43/k/7KxQeOeRt1WVwruzPjL 5S6EOnLL7a0oJAmq6/r9NhGq93M6IPbTPmOG8KiDOOyQ8UmROG4PXcBndf/FQFl4Qm 2tvOWE/CQaxlMEQjCCud2GNzxpWxxPhKysJP8nUXBdWMZpNi20kVnT2vog+kJzPWPh pX4r5D5vZNKqiH+QAzAvlSEbVlm40enKO3FbhOhLMFbr/Ee1G/wVTHODXwKGoAH7sl dyGnwasbKAeDCqRxu0SCdrwcTqPcAlu5Oivn9xsceZeo6CHNvIYrMVbfBkhOVuf02c cvtn/+yi6bcgg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ivan Lipski , Daniel Wheeler , Sun peng Li , Rodrigo Siqueira , Alex Deucher , Sasha Levin , harry.wentland@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, qingqing.zhuo@amd.com, Wayne.Lin@amd.com, lyude@redhat.com, aurabindo.pillai@amd.com, srinivasan.shanmugam@amd.com, sungjoon.kim@amd.com, hamza.mahfooz@amd.com, mikita.lipski@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.6 39/47] drm/amd/display: Add monitor patch for specific eDP Date: Mon, 11 Dec 2023 08:50:40 -0500 Message-ID: <20231211135147.380223-39-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231211135147.380223-1-sashal@kernel.org> References: <20231211135147.380223-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.5 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ivan Lipski [ Upstream commit 3d71a8726e05a35beb9de394e86ce896d69e563f ] [WHY] Some eDP panels's ext caps don't write initial value cause the value of dpcd_addr(0x317) is random. It means that sometimes the eDP will clarify it is OLED, miniLED...etc cause the backlight control interface is incorrect. [HOW] Add a new panel patch to remove sink ext caps(HDR,OLED...etc) Tested-by: Daniel Wheeler Reviewed-by: Sun peng Li Acked-by: Rodrigo Siqueira Signed-off-by: Ivan Lipski Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 4b230933b28eb..87a1000b85729 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -63,6 +63,12 @@ static void apply_edid_quirks(struct edid *edid, struct dc_edid_caps *edid_caps) DRM_DEBUG_DRIVER("Disabling FAMS on monitor with panel id %X\n", panel_id); edid_caps->panel_patch.disable_fams = true; break; + /* Workaround for some monitors that do not clear DPCD 0x317 if FreeSync is unsupported */ + case drm_edid_encode_panel_id('A', 'U', 'O', 0xA7AB): + case drm_edid_encode_panel_id('A', 'U', 'O', 0xE69B): + DRM_DEBUG_DRIVER("Clearing DPCD 0x317 on monitor with panel id %X\n", panel_id); + edid_caps->panel_patch.remove_sink_ext_caps = true; + break; default: return; } -- 2.42.0