From nobody Sun Apr 26 12:19:28 2026 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 10EBCCCA47E for ; Tue, 28 Jun 2022 15:20:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347795AbiF1PUX (ORCPT ); Tue, 28 Jun 2022 11:20:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344555AbiF1PUV (ORCPT ); Tue, 28 Jun 2022 11:20:21 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6D2832ED2; Tue, 28 Jun 2022 08:20:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1656429620; x=1687965620; h=from:to:cc:subject:date:message-id:mime-version; bh=qsVrB4/khfucpjBiFcbeN6QBKJZEym13aaN4eGlpdCk=; b=DY6ytGdSUDSdRYn1U3F1AZu6kH5V76o0u/q9lWYfTUx6nj1pIIpNx/B0 40GWf4+o/k4bsuhOUiNtMfHjHJB9a7mF4NmDlPcGjGBhdcqGKTol0flEg VaVRLvP4OEZdDsNVT9o3ePqXqq45akE9CAv66D93GPVdQSyfaD2q2YG+4 4=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-01.qualcomm.com with ESMTP; 28 Jun 2022 08:20:20 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jun 2022 08:20:20 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 28 Jun 2022 08:20:19 -0700 Received: from khsieh-linux1.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 28 Jun 2022 08:20:18 -0700 From: Kuogee Hsieh To: , , , , , , , , , CC: , , , , , , , Subject: [PATCH] drm/msm/dp: make eDP panel as the first connected connector Date: Tue, 28 Jun 2022 08:20:06 -0700 Message-ID: <1656429606-2765-1-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some userspace presumes that the first connected connector is the main display, where it's supposed to display e.g. the login screen. For laptops, this should be the main panel. This patch call drm_helper_move_panel_connectors_to_head() after drm_bridge_connector_init() to make sure eDP stay at head of connected connector list. This fixes unexpected corruption happen at eDP panel if eDP is not placed at head of connected connector list. Signed-off-by: Kuogee Hsieh Reviewed-by: Abhinav Kumar Reviewed-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Tested-by: Douglas Anderson --- drivers/gpu/drm/msm/dp/dp_drm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_dr= m.c index ce0ec3a..2d18884 100644 --- a/drivers/gpu/drm/msm/dp/dp_drm.c +++ b/drivers/gpu/drm/msm/dp/dp_drm.c @@ -136,5 +136,7 @@ struct drm_connector *dp_drm_connector_init(struct msm_= dp *dp_display) =20 drm_connector_attach_encoder(connector, dp_display->encoder); =20 + drm_helper_move_panel_connectors_to_head(dp_display->drm_dev); + return connector; } --=20 The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project