From patchwork Tue Sep 13 14:51:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Polimera X-Patchwork-Id: 12974954 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 B0C74C54EE9 for ; Tue, 13 Sep 2022 16:00:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234227AbiIMQAk (ORCPT ); Tue, 13 Sep 2022 12:00:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233846AbiIMP7g (ORCPT ); Tue, 13 Sep 2022 11:59:36 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4138394ED9; Tue, 13 Sep 2022 07:58:10 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28DDwBTq030918; Tue, 13 Sep 2022 14:56:32 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=1XkdyIeRY4IMq0+ZynTUYZGZ44yrxyHsX8c9Iqq7+Xo=; b=bbvIep5RTM4pDn54IFO/Wou/TznGOfd8ugwODjuKwAKR415ZZS91qXGacxRqMLt5Vy0o TSySWWo24/ItEa/MjHChexFsFX1z2ptUX6BT0POpIWQHNndhfuCgunoYR3okt9VZDDtl GfKD5wKSxB0kALxtacF/J7LORWrecw6Nc2gTF4TCzvEQmL/jLbsmJ/6f1yIUPzL8hDqa Wl44j2gaIIWdEJiDdzeLZTf40WeMLYQqJ+FX6tat3pzxv/N+JcMidQ8EfjuPUG9LUkE8 EDJsGNDeOIY60DlAhKEdZ372R5m0UUVmgwEcNGsVKlXkCnM29OiQ/22eV1lV2EL1HNSJ Xg== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jjhu3tf9c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Sep 2022 14:56:31 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 28DEpQca017890; Tue, 13 Sep 2022 14:51:28 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3jh46m5ds5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 13 Sep 2022 14:51:28 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 28DEpRac017931; Tue, 13 Sep 2022 14:51:27 GMT Received: from vpolimer-linux.qualcomm.com (vpolimer-linux.qualcomm.com [10.204.67.235]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 28DEpRP9017916; Tue, 13 Sep 2022 14:51:27 +0000 Received: by vpolimer-linux.qualcomm.com (Postfix, from userid 463814) id 567BE15E9; Tue, 13 Sep 2022 20:21:26 +0530 (IST) From: Vinod Polimera To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: Vinod Polimera , linux-kernel@vger.kernel.org, robdclark@gmail.com, dianders@chromium.org, swboyd@chromium.org, quic_kalyant@quicinc.com, dmitry.baryshkov@linaro.org, quic_khsieh@quicinc.com, quic_vproddut@quicinc.com, quic_bjorande@quicinc.com, quic_aravindh@quicinc.com, quic_abhinavk@quicinc.com, quic_sbillaka@quicinc.com Subject: [PATCH v7 13/15] drm/msm/disp/dpu: wait for extra vsync till timing engine status is disabled Date: Tue, 13 Sep 2022 20:21:14 +0530 Message-Id: <1663080676-12936-14-git-send-email-quic_vpolimer@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1663080676-12936-1-git-send-email-quic_vpolimer@quicinc.com> References: <1663080676-12936-1-git-send-email-quic_vpolimer@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: D211TSzmNX--pox_-BGrTrmSmlFZz78- X-Proofpoint-GUID: D211TSzmNX--pox_-BGrTrmSmlFZz78- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-13_07,2022-09-13_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 mlxscore=0 suspectscore=0 clxscore=1015 phishscore=0 bulkscore=0 spamscore=0 mlxlogscore=999 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209130068 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org There can be a race between timing gen disable and vblank irq. The wait post timing gen disable may return early but intf disable sequence might not be completed. Ensure that, intf status is disabled before we retire the function. Signed-off-by: Vinod Polimera --- .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c index 2c14646..5a0dc54 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c @@ -525,6 +525,7 @@ static void dpu_encoder_phys_vid_disable(struct dpu_encoder_phys *phys_enc) { unsigned long lock_flags; int ret; + struct intf_status intf_status = {0}; if (!phys_enc->parent || !phys_enc->parent->dev) { DPU_ERROR("invalid encoder/device\n"); @@ -569,6 +570,26 @@ static void dpu_encoder_phys_vid_disable(struct dpu_encoder_phys *phys_enc) } } + if (phys_enc->hw_intf && phys_enc->hw_intf->ops.get_status) + phys_enc->hw_intf->ops.get_status(phys_enc->hw_intf, &intf_status); + + /* + * Wait for a vsync if timing en status is on after timing engine + * is disabled. + */ + if (intf_status.is_en && dpu_encoder_phys_vid_is_master(phys_enc)) { + spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags); + dpu_encoder_phys_inc_pending(phys_enc); + spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags); + ret = dpu_encoder_phys_vid_wait_for_vblank(phys_enc); + if (ret) { + atomic_set(&phys_enc->pending_kickoff_cnt, 0); + DRM_ERROR("wait disable failed: id:%u intf:%d ret:%d\n", + DRMID(phys_enc->parent), + phys_enc->hw_intf->idx - INTF_0, ret); + } + } + phys_enc->enable_state = DPU_ENC_DISABLED; }