From patchwork Fri Dec 6 04:32:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhinav Kumar X-Patchwork-Id: 13896456 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EE93BE77170 for ; Fri, 6 Dec 2024 04:33:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E54C110F012; Fri, 6 Dec 2024 04:33:14 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=quicinc.com header.i=@quicinc.com header.b="XTvTkJZn"; dkim-atps=neutral Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id F1FA410F001; Fri, 6 Dec 2024 04:33:12 +0000 (UTC) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4B62S8qc004287; Fri, 6 Dec 2024 04:32:42 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= tjP0Mguzax7cHwImo5rW5rhiceEC8tRn1O7bb2yoJHg=; b=XTvTkJZnPzw9zASQ OZYEmyt2PyVghQ4L3yud28XW2PLWO/NeVlFKJdNELH9JzWkWUU+nliXQcSpJ3bfl yAldI03Yr8sQuNCP8rweTU+MFOBhXuctdUCZO6ghR0yN/re0OGpVmMNAhrj9fGuC ykmV7W5BMciy0VYSh3k29gy2hE0ym+oefa1hFUkZKTI9liSmoJLf/taozvFT0aP1 Tp+umjq+188lylvNfPF/4JTCnuX1YugtrS1CIfhq6rYNGfMU4r1soptiPX9KbRq6 4J74hbBlRBdKXk1gfAu//pnuRar3LaMDk0ONY3y73g7Gx/S0q8rNN39SMa/uRPPr G/LW1Q== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 43brgp08yj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Dec 2024 04:32:41 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4B64WfpG007185 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 6 Dec 2024 04:32:41 GMT Received: from abhinavk-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 15.2.1544.9; Thu, 5 Dec 2024 20:32:40 -0800 From: Abhinav Kumar Date: Thu, 5 Dec 2024 20:32:00 -0800 Subject: [PATCH 29/45] drm/msm/dp: skip reading the EDID for MST cases MIME-Version: 1.0 Message-ID: <20241205-dp_mst-v1-29-f8618d42a99a@quicinc.com> References: <20241205-dp_mst-v1-0-f8618d42a99a@quicinc.com> In-Reply-To: <20241205-dp_mst-v1-0-f8618d42a99a@quicinc.com> To: Rob Clark , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , "Simona Vetter" , Stephen Boyd , "Chandan Uddaraju" , Guenter Roeck , Kuogee Hsieh , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: Vara Reddy , Rob Clark , Tanmay Shah , , , , , , Jessica Zhang , Laurent Pinchart , Abhinav Kumar X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1733459543; l=1007; i=quic_abhinavk@quicinc.com; s=20240509; h=from:subject:message-id; bh=vF4pbsDZSIkvUA2jBBS1wHa0UpDRC2QmIDLSGxlVkeI=; b=G5Um2F+DCCJrDmVr2p1aUl2UPFHTfPOvg8RwsBsUEPKgvfOkcTFWiP0n/bIhKthXKV3FbvrWw ZZux4t91hioDBRjMXVdepM+NozRRpGB3or93Vnga8SIkYpL+lsSmq7Z X-Developer-Key: i=quic_abhinavk@quicinc.com; a=ed25519; pk=SD3D8dOKDDh6BoX3jEYjsHrTFwuIK8+o0cLPgQok9ys= 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) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: DE6xcVsa2-2R6CB0b5A829Xvsz-T8qsw X-Proofpoint-ORIG-GUID: DE6xcVsa2-2R6CB0b5A829Xvsz-T8qsw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 mlxscore=0 spamscore=0 suspectscore=0 priorityscore=1501 phishscore=0 impostorscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412060030 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" For MST cases, EDID is handled through AUX sideband messaging. Skip the EDID read during hotplug handle for MST cases. Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/msm/dp/dp_display.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 033d238e956263c1212fce45aab01316ef341edb..a67bc7c1b83a5a9996435804ff7337f72dae93a0 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -420,9 +420,11 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) if (rc) goto end; - rc = msm_dp_panel_read_edid(dp->panel, connector); - if (rc) - goto end; + if (dp->max_stream <= DEFAULT_STREAM_COUNT || !msm_dp_panel_read_mst_cap(dp->panel)) { + rc = msm_dp_panel_read_edid(dp->panel, connector); + if (rc) + goto end; + } msm_dp_link_process_request(dp->link);