From patchwork Fri May 19 21:17:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jessica Zhang X-Patchwork-Id: 683990 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 EFDC0C7EE2F for ; Fri, 19 May 2023 21:17:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229779AbjESVRs (ORCPT ); Fri, 19 May 2023 17:17:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229933AbjESVRr (ORCPT ); Fri, 19 May 2023 17:17:47 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ACCAF1B4; Fri, 19 May 2023 14:17:45 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34JLCC2h013630; Fri, 19 May 2023 21:17:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : date : subject : mime-version : content-type : content-transfer-encoding : message-id : references : in-reply-to : to : cc; s=qcppdkim1; bh=LGYs5JRaupul/sQxKqKuVkEMyQsNwb7uHfELaz+GOEI=; b=DOffWZmhgn8+LKuoN61Q5kEY5/98uNAaOUcF9jBKGJ1zMSO7RIDTlY9sgfqwYv9hpWy5 54XBydVddmoqn62z1Tbh3VUR28s+OZEZnXG9Kky9NNaBB6xbT18QKs4yNMpqCozwcvta Pr3fdJ8nSmMQa85yYDLbRn651QQULSJgFKEILspir63up9qkEBTug+ydRV2yCdovq2Vd oAuPpn0vq/NdnoGqI/9hNPSRKckRrcYK0Dc+0Z+ypvYoOgoTMlcpZk5O5dkc8XtW+wn0 fIDPIR+sKWaf6rsU8FvPo+bC+Y7TuqiR44bNLnjC6SbYyg5fQPnTqWWsnjum/NOFxpi5 mQ== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3qp2e9a712-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 May 2023 21:17:37 +0000 Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 34JLHaR9002604 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 May 2023 21:17:36 GMT Received: from jesszhan-linux.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Fri, 19 May 2023 14:17:36 -0700 From: Jessica Zhang Date: Fri, 19 May 2023 14:17:26 -0700 Subject: [PATCH v3 1/5] msm/drm/dsi: Round up DSC hdisplay calculation MIME-Version: 1.0 Message-ID: <20230405-add-dsc-support-v3-1-6e1d35a206b3@quicinc.com> References: <20230405-add-dsc-support-v3-0-6e1d35a206b3@quicinc.com> In-Reply-To: <20230405-add-dsc-support-v3-0-6e1d35a206b3@quicinc.com> To: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Marijn Suijten CC: Konrad Dybcio , , , , , Jessica Zhang X-Mailer: b4 0.13-dev-bfdf5 X-Developer-Signature: v=1; a=ed25519-sha256; t=1684531055; l=1111; i=quic_jesszhan@quicinc.com; s=20230329; h=from:subject:message-id; bh=UzrL5TSME/tshGEfQM1zFG9UKatVsCjuwESCrirmoyE=; b=+OUjWpXbUlg2+N1msooyFE448B64q+//m6Hh9gKtgE0bpFZJA3mmsrZu0fJC+CuP6Zg2ouHsb 1ekBTd324rQDaSOyM78zxu9aRXnhMdSHita099JnRyvtS9dvwgeIjl8 X-Developer-Key: i=quic_jesszhan@quicinc.com; a=ed25519; pk=gAUCgHZ6wTJOzQa3U0GfeCDH7iZLlqIEPo4rrjfDpWE= X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: ByVcaLshZ8zVBbfIMENXEChEzR-zkxIf X-Proofpoint-ORIG-GUID: ByVcaLshZ8zVBbfIMENXEChEzR-zkxIf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-19_16,2023-05-17_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxscore=0 suspectscore=0 bulkscore=0 malwarescore=0 phishscore=0 spamscore=0 adultscore=0 priorityscore=1501 impostorscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305190184 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Currently, when compression is enabled, hdisplay is reduced via integer division. This causes issues for modes where the original hdisplay is not a multiple of 3. To fix this, use DIV_ROUND_UP to divide hdisplay. Reported-by: Marijn Suijten Fixes: f3a99460406b ("drm/msm/dsi: update hdisplay calculation for dsi_timing_setup") Signed-off-by: Jessica Zhang --- drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 9223d7ec5a73..18d38b90eb28 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -952,7 +952,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) * pulse width same */ h_total -= hdisplay; - hdisplay = msm_dsc_get_bytes_per_line(msm_host->dsc) / 3; + hdisplay = DIV_ROUND_UP(msm_dsc_get_bytes_per_line(msm_host->dsc), 3); h_total += hdisplay; ha_end = ha_start + hdisplay; }