From patchwork Mon Nov 21 09:08:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalyan Thota X-Patchwork-Id: 627738 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 809AAC43217 for ; Mon, 21 Nov 2022 09:08:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229921AbiKUJIj (ORCPT ); Mon, 21 Nov 2022 04:08:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230014AbiKUJIa (ORCPT ); Mon, 21 Nov 2022 04:08:30 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20BFF8B113; Mon, 21 Nov 2022 01:08:29 -0800 (PST) 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 2AL8QiNU026044; Mon, 21 Nov 2022 09:08:25 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=Xbixi/D3kJQmqiT72xNXf1ix25tBfYqHviclOosD4ng=; b=Y4uc1L9F1loAsqINB49U6zR2xCBzkCO66h9Bs+u03K1XgS7Pd8fkBI5X6sMn+1om1Tv8 l1/PqA/tdcCUDwtG5K63HscPvrYMhvXdpw8nKo3ED+ezGv0+LvvdAuiJDDbkRLOPmn4V BHvpeZMx99IxjI2m2dSLwHj1SbsUD+a9bd3iVqchxhchU9PxZ8c+i7TKnz14pJZrvkaR 8Bjrmn42NiI2ay2K+FF9lxX6LKlqhD4xmkDqYaC8RZE5DQ/N09mfFS6Z0qDswGwVw5KR 4C2/aHCr1c3q3PQYjZ02RMw8uoLY03HALgSQLK/OyA41Za1kmSwLWr/buuUdUCB3qF0y ug== Received: from apblrppmta02.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3kxrfbux3t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Nov 2022 09:08:25 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 2AL98LMl032757; Mon, 21 Nov 2022 09:08:21 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3kxr7k3t7v-1; Mon, 21 Nov 2022 09:08:21 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 2AL98Lne032751; Mon, 21 Nov 2022 09:08:21 GMT Received: from kalyant-linux.qualcomm.com (kalyant-linux.qualcomm.com [10.204.66.210]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 2AL98LmS032750; Mon, 21 Nov 2022 09:08:21 +0000 Received: by kalyant-linux.qualcomm.com (Postfix, from userid 94428) id 4F24D349C; Mon, 21 Nov 2022 01:08:20 -0800 (PST) From: Kalyan Thota To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: Kalyan Thota , linux-kernel@vger.kernel.org, robdclark@chromium.org, dianders@chromium.org, swboyd@chromium.org, quic_vpolimer@quicinc.com, dmitry.baryshkov@linaro.org, quic_abhinavk@quicinc.com Subject: [PATCH v4 1/3] drm/msm/disp/dpu1: pin 1 crtc to 1 encoder Date: Mon, 21 Nov 2022 01:08:13 -0800 Message-Id: <1669021695-4397-2-git-send-email-quic_kalyant@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1669021695-4397-1-git-send-email-quic_kalyant@quicinc.com> References: <1669021695-4397-1-git-send-email-quic_kalyant@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-GUID: 0W2KnGPIeZvLC8-_aXS-fMkQ7mxJ4YuC X-Proofpoint-ORIG-GUID: 0W2KnGPIeZvLC8-_aXS-fMkQ7mxJ4YuC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-21_06,2022-11-18_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 phishscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2211210071 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Pin each crtc with one encoder. This arrangement will disallow crtc switching between encoders and also will facilitate to advertise certain features on crtc based on encoder type. Changes in v1: - use drm_for_each_encoder macro while iterating through encoder list (Dmitry) Changes in v2: - make sure no encoder miss to have a crtc (Dmitry) - revisit various factors in deciding the crtc count such as num_mixers, num_sspp (Dmitry) Changes in v3: - none Changes in v4: - use max_crtc_count instead of num_encoders in WARN (Dmitry) Reviewed-by: Dmitry Baryshkov Signed-off-by: Kalyan Thota --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 7a5fabc..d967eef 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -747,6 +747,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms) int primary_planes_idx = 0, cursor_planes_idx = 0, i, ret; int max_crtc_count; + dev = dpu_kms->dev; priv = dev->dev_private; catalog = dpu_kms->catalog; @@ -763,7 +764,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms) drm_for_each_encoder(encoder, dev) num_encoders++; - max_crtc_count = min(catalog->mixer_count, num_encoders); + max_crtc_count = num_encoders; /* Create the planes, keeping track of one primary/cursor per crtc */ for (i = 0; i < catalog->sspp_count; i++) { @@ -795,22 +796,25 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms) primary_planes[primary_planes_idx++] = plane; } - max_crtc_count = min(max_crtc_count, primary_planes_idx); + /* + * All the platforms should have at least 1 primary plane for a + * crtc. The below warn should help in setting up the catalog + */ + WARN_ON(max_crtc_count > primary_planes_idx); /* Create one CRTC per encoder */ - for (i = 0; i < max_crtc_count; i++) { + i = 0; + drm_for_each_encoder(encoder, dev) { crtc = dpu_crtc_init(dev, primary_planes[i], cursor_planes[i]); if (IS_ERR(crtc)) { ret = PTR_ERR(crtc); return ret; } priv->crtcs[priv->num_crtcs++] = crtc; + encoder->possible_crtcs = 1 << drm_crtc_index(crtc); + i++; } - /* All CRTCs are compatible with all encoders */ - drm_for_each_encoder(encoder, dev) - encoder->possible_crtcs = (1 << priv->num_crtcs) - 1; - return 0; }