From nobody Tue Jun 30 05:38:10 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 D8D3FC433FE for ; Mon, 24 Jan 2022 21:13:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1448402AbiAXVMf (ORCPT ); Mon, 24 Jan 2022 16:12:35 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:6353 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1390807AbiAXUqZ (ORCPT ); Mon, 24 Jan 2022 15:46:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1643057186; x=1674593186; h=from:to:cc:subject:date:message-id:mime-version; bh=GRbUMXJdZdTwUnYKR/ryNDqpfjnJkqgWc+WnYEkkLro=; b=evgr4pyi8HwMiTnEnnSnaaPsR3vRS9aHceyf1hh7GnzAgViff9/4j1Pg thxPw7XuPrwTKBPDgYVHxJ1Vlk0Qcz6pRnOC8K2rDi93rwYDyvuGwxsp8 K2qZNLZwXJqSMWUsFRFz8bzHNHh9SW4ZtwkiC3fr5BtmlPCV5uk7IWHk8 I=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 24 Jan 2022 12:46:23 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg07-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2022 12:46:22 -0800 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 15.2.922.19; Mon, 24 Jan 2022 12:46:20 -0800 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 15.2.922.19; Mon, 24 Jan 2022 12:46:20 -0800 From: Kuogee Hsieh To: , , , , , , , , CC: , , , , , , Subject: [PATCH] drm/msm/dp: always add fail-safe mode into connector mode list Date: Mon, 24 Jan 2022 12:46:10 -0800 Message-ID: <1643057170-10413-1-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: nasanex01b.na.qualcomm.com (10.46.141.250) 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 of DP link compliant test expects to return fail-safe mode if prefer detailed timing mode can not be supported by mainlink's lane and rate after link training. Therefore add fail-safe mode into connector mode list as backup mode. This patch fixes test case 4.2.2.1. Signed-off-by: Kuogee Hsieh --- drivers/gpu/drm/msm/dp/dp_panel.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_= panel.c index 3b02922..7743b45 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -221,6 +221,11 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel, if (drm_add_modes_noedid(connector, 640, 480)) drm_set_preferred_mode(connector, 640, 480); mutex_unlock(&connector->dev->mode_config.mutex); + } else { + /* always add fail-safe mode as backup mode */ + mutex_lock(&connector->dev->mode_config.mutex); + drm_add_modes_noedid(connector, 640, 480); + mutex_unlock(&connector->dev->mode_config.mutex); } =20 if (panel->aux_cfg_update_done) { --=20 The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project