From patchwork Fri Jun 9 22:57:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jessica Zhang X-Patchwork-Id: 691397 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 6DB39C7EE43 for ; Fri, 9 Jun 2023 23:01:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232102AbjFIXBV (ORCPT ); Fri, 9 Jun 2023 19:01:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229475AbjFIXBU (ORCPT ); Fri, 9 Jun 2023 19:01:20 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D66830F5; Fri, 9 Jun 2023 16:01:19 -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 359MKHr8023367; Fri, 9 Jun 2023 23:01:11 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=9vBfpXzZLqwFOhu+9A67oENBK77yXGBNcvNDeekEGt0=; b=Thjn6bbuV4kUmwq4qHdnlUH+OvYf2iHjYuJQuQUZwpf/j8bJOsa9jB+wESD+LHwdqN0M y8Z6D1gwESg8K6beApvqDJj6vM0bW6JtqhCIbyfV8rHnIge5d/cR2MSd3ZTOMy30y+wR JMa4C25uFXl0hpHMRESpWE+zFMgOwvOJed6yLMqf08FnVQxoewFHhoCKKGE7Xv2dhPBm egbtjrQ4bs7B+Bu5oYibYi0pqKJqJGn2OtWtMVUD5oczz/gXUr3D85xzuk0VVYHYMHZt s7Bo5NFnzCr15djPY8oPHxaPF+aD6Zoy6O6IsuZXrhX0CrG8KulptmSjWwXUjL+coizg YA== Received: from nasanppmta02.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3r3t70j9u8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 09 Jun 2023 23:01:11 +0000 Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 359N1ADl028085 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 9 Jun 2023 23:01:10 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, 9 Jun 2023 16:01:10 -0700 From: Jessica Zhang Date: Fri, 9 Jun 2023 15:57:13 -0700 Subject: [PATCH v6 1/6] msm/drm/dsi: Round up DSC hdisplay calculation MIME-Version: 1.0 Message-ID: <20230405-add-dsc-support-v6-1-95eab864d1b6@quicinc.com> References: <20230405-add-dsc-support-v6-0-95eab864d1b6@quicinc.com> In-Reply-To: <20230405-add-dsc-support-v6-0-95eab864d1b6@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-c6835 X-Developer-Signature: v=1; a=ed25519-sha256; t=1686351669; l=1159; i=quic_jesszhan@quicinc.com; s=20230329; h=from:subject:message-id; bh=Z7rGYxUoEMDO6n2vIOFZD5Q+cCpRrXZUZzZaiIEp3qE=; b=96ZYlaWBOZRyER84/FzILXFq80g6gqtuur2f83tEprH710GhJFw1t8RfscwftKwu/xEyj7Nhb jMWQqYxmI5aBqELaeabi2RiXrKCjMWzOMzyp/A5je0knlSzSu43xLTz 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: va_YVw9XiJP4DXrleTb4qz1eSQ3_9Y4D X-Proofpoint-ORIG-GUID: va_YVw9XiJP4DXrleTb4qz1eSQ3_9Y4D X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-09_16,2023-06-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 mlxscore=0 spamscore=0 clxscore=1015 suspectscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306090195 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. Suggested-by: Marijn Suijten Fixes: 08802f515c3cf ("drm/msm/dsi: Add support for DSC configuration") Reviewed-by: Marijn Suijten 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 1a99d75025dc..a448931af804 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -949,7 +949,7 @@ 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; }