From patchwork Sat Feb 15 00:14:27 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jessica Zhang X-Patchwork-Id: 13975807 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 05675C021A4 for ; Sat, 15 Feb 2025 00:15:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0893C10ED47; Sat, 15 Feb 2025 00:15:36 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=quicinc.com header.i=@quicinc.com header.b="kJ3xCOzI"; dkim-atps=neutral Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5828210E454; Sat, 15 Feb 2025 00:15:35 +0000 (UTC) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 51EJ2VG5025470; Sat, 15 Feb 2025 00:15:27 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= Bhe+aQmWsDigtUsgNF/ga1WOtJXu21ZcnfBC03qMU1k=; b=kJ3xCOzIkq0xPfxH qs3YYipqersAX8los6t+2oZ5l9kAWwdsVPiKP/plMMnceWEfks2ZtAZCMjjOa/rB 6ROX6uFcWfBunUigCmZSXzGqzXwtaVepqbQCWwVHWi+m9cHfjTFDT7lr7e1qSkGv HXAcFAD1fOUjlJZe1oDta1rOSUXt7hFp8xaMKNTux05mpf6FFkQnEzPuQErcVvef Rpi8nJDjz+Yp3FImTBWlIaYIuYAZc511MReAAkyTxotS8zPdCbL3ohvUMO/29a88 aXhr6M8zJ1qzC9ezI9F9iLmlQqbOvhOAp6niZs7flqFuIkAh9JNbo/yVA7K9Wina b6MEsg== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 44tbms0jae-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 15 Feb 2025 00:15:26 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 51F0FPlL025746 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 15 Feb 2025 00:15:25 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 15.2.1544.9; Fri, 14 Feb 2025 16:15:25 -0800 From: Jessica Zhang Date: Fri, 14 Feb 2025 16:14:27 -0800 Subject: [PATCH v6 04/14] drm/msm/dpu: Add CWB to msm_display_topology MIME-Version: 1.0 Message-ID: <20250214-concurrent-wb-v6-4-a44c293cf422@quicinc.com> References: <20250214-concurrent-wb-v6-0-a44c293cf422@quicinc.com> In-Reply-To: <20250214-concurrent-wb-v6-0-a44c293cf422@quicinc.com> To: Rob Clark , Dmitry Baryshkov , , Sean Paul , Marijn Suijten , "David Airlie" , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Simona Vetter , Simona Vetter CC: , , , , , Rob Clark , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , "Jessica Zhang" X-Mailer: b4 0.15-dev-f0f05 X-Developer-Signature: v=1; a=ed25519-sha256; t=1739578524; l=4059; i=quic_jesszhan@quicinc.com; s=20230329; h=from:subject:message-id; bh=yMlSfAbo5SwX9U3Zm9brFEYsVdtidFXiSZeVBPMUye8=; b=qw1fmjGyhCsIJwRYOkz1ekG/XpY9KA2Nsy8SxFK335tS2y+DrycR7YKLoTD9PgXpl+AKgrd3X 1HIap7DoNHhD1csgHmSl8PDWeimw9D+oUvzDW1zZSG+hU3jYElvnpCh X-Developer-Key: i=quic_jesszhan@quicinc.com; a=ed25519; pk=gAUCgHZ6wTJOzQa3U0GfeCDH7iZLlqIEPo4rrjfDpWE= X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) 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: p8ani97b-EjcjKDOFQUg7iNmrDE7JxTA X-Proofpoint-ORIG-GUID: p8ani97b-EjcjKDOFQUg7iNmrDE7JxTA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-14_10,2025-02-13_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxscore=0 impostorscore=0 suspectscore=0 bulkscore=0 spamscore=0 priorityscore=1501 adultscore=0 clxscore=1015 phishscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2501170000 definitions=main-2502150000 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" Currently, the topology is calculated based on the assumption that the user cannot request real-time and writeback simultaneously. For example, the number of LMs and CTLs are currently based off the number of phys encoders under the assumption there will be at least 1 LM/CTL per phys encoder. This will not hold true for concurrent writeback as both phys encoders (1 real-time and 1 writeback) must be driven by 1 LM/CTL when concurrent writeback is enabled. To account for this, add a cwb_enabled flag and only adjust the number of CTL/LMs needed by a given topology based on the number of phys encoders only if CWB is not enabled. Reviewed-by: Abhinav Kumar Reviewed-by: Dmitry Baryshkov Signed-off-by: Jessica Zhang --- Changes in v5: - Reworded commit message to be more specific --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 11 ++++++++++- drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 14 ++++++++++++-- drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 2 ++ 3 files changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index ba5c60296e17..7c0ab1cee057 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -1246,6 +1246,8 @@ static struct msm_display_topology dpu_crtc_get_topology( dpu_encoder_update_topology(drm_enc, &topology, crtc_state->state, &crtc_state->adjusted_mode); + topology.cwb_enabled = drm_crtc_in_clone_mode(crtc_state); + /* * Datapath topology selection * @@ -1259,9 +1261,16 @@ static struct msm_display_topology dpu_crtc_get_topology( * If DSC is enabled, use 2 LMs for 2:2:1 topology * * Add dspps to the reservation requirements if ctm is requested + * + * Only hardcode num_lm to 2 for cases where num_intf == 2 and CWB is not + * enabled. This is because in cases where CWB is enabled, num_intf will + * count both the WB and real-time phys encoders. + * + * For non-DSC CWB usecases, have the num_lm be decided by the + * (mode->hdisplay > MAX_HDISPLAY_SPLIT) check. */ - if (topology.num_intf == 2) + if (topology.num_intf == 2 && !topology.cwb_enabled) topology.num_lm = 2; else if (topology.num_dsc == 2) topology.num_lm = 2; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c index a7b4086ae990..0fbb92021b18 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c @@ -381,8 +381,18 @@ static int _dpu_rm_reserve_ctls( int i = 0, j, num_ctls; bool needs_split_display; - /* each hw_intf needs its own hw_ctrl to program its control path */ - num_ctls = top->num_intf; + /* + * For non-CWB mode, each hw_intf needs its own hw_ctl to program its + * control path. + * + * Hardcode num_ctls to 1 if CWB is enabled because in CWB, both the + * writeback and real-time encoders must be driven by the same control + * path + */ + if (top->cwb_enabled) + num_ctls = 1; + else + num_ctls = top->num_intf; needs_split_display = _dpu_rm_needs_split_display(top); diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h index 463c532cdfdf..b854e42d319d 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h @@ -52,6 +52,7 @@ struct dpu_rm_sspp_requirements { * @num_dspp: number of dspp blocks used * @num_dsc: number of Display Stream Compression (DSC) blocks used * @needs_cdm: indicates whether cdm block is needed for this display topology + * @cwb_enabled: indicates whether CWB is enabled for this display topology */ struct msm_display_topology { u32 num_lm; @@ -59,6 +60,7 @@ struct msm_display_topology { u32 num_dspp; u32 num_dsc; bool needs_cdm; + bool cwb_enabled; }; int dpu_rm_init(struct drm_device *dev,