From patchwork Mon Jan 23 18:24:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 13112736 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 7BBE4C61D97 for ; Mon, 23 Jan 2023 18:25:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233598AbjAWSZN (ORCPT ); Mon, 23 Jan 2023 13:25:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233938AbjAWSY7 (ORCPT ); Mon, 23 Jan 2023 13:24:59 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 963401708; Mon, 23 Jan 2023 10:24:58 -0800 (PST) Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30NHTZ02001422; Mon, 23 Jan 2023 18:24:53 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 : mime-version : content-type; s=qcppdkim1; bh=Ji+FAppXotgL8bQEuDA6ylS1qPj07DFCCie3YVYuhB0=; b=SgmSWiSE5d1Im02FsNjUYtcNdN8vxFeB2xTzRb4OHuVCKsicb9B7kuIw5lignW6drkoV qHqS4gO4SkBOI4+NJ7KOrpTcfFdPdLBQyqgJZD4mLpZUtWtrKolA1By4frV7sz5IqYjV NT4jVipxSM5J8iwo7p6gUSoxSCEaHK+ScIGDitDChZDOw182T0oEd8hDPgejeh+Yd5xZ O0gbHU7y5W4WHLuHvZhgq509FXQKS1BUB86zXwSSGSsEmNV/0aDZjMf7G137WLT5NWVU pHp3s4e3wmnV41nlfBU8R2aWuZ2Toj2DM3JIOSPsnSBVDX052dUV4AD1GBZ4ZRGOk3Jj mQ== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3n89f5bjw1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 23 Jan 2023 18:24:53 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 30NIOp26012292 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 23 Jan 2023 18:24:51 GMT Received: from khsieh-linux1.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Mon, 23 Jan 2023 10:24:51 -0800 From: Kuogee Hsieh To: , , , , , , , , , , CC: Kuogee Hsieh , , , , , Subject: [PATCH v1 03/14] drm/msm/dp: add configure mainlink_levels base on lane number Date: Mon, 23 Jan 2023 10:24:23 -0800 Message-ID: <1674498274-6010-4-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1674498274-6010-1-git-send-email-quic_khsieh@quicinc.com> References: <1674498274-6010-1-git-send-email-quic_khsieh@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 0gKUgY-g8gIjlMS6356gKFQEaaB2kBOL X-Proofpoint-GUID: 0gKUgY-g8gIjlMS6356gKFQEaaB2kBOL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-23_12,2023-01-23_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 bulkscore=0 clxscore=1015 mlxscore=0 spamscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301230176 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Mainlink_levels determined when two actions to take place by hardware, a new BS sequence due to start of video and a static HW MVID is sent to panel. This patch add function to configure mainlink level properly base on lane number. Signed-off-by: Kuogee Hsieh --- drivers/gpu/drm/msm/dp/dp_catalog.c | 37 ++++++++++++++++++++++++++++++++++++- drivers/gpu/drm/msm/dp/dp_catalog.h | 4 +++- drivers/gpu/drm/msm/dp/dp_ctrl.c | 4 ++++ 3 files changed, 43 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c index 676279d..7ac37d8 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.c +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved. + * Copyright (c) 2017-2023, The Linux Foundation. All rights reserved. + * Copyright (c) 2021. Qualcomm Innovation Center, Inc. All rights reserved */ #define pr_fmt(fmt) "[drm-dp] %s: " fmt, __func__ @@ -359,6 +360,40 @@ void dp_catalog_ctrl_lane_mapping(struct dp_catalog *dp_catalog) ln_mapping); } +void dp_catalog_ctrl_mainlink_levels(struct dp_catalog *dp_catalog, + u8 lane_cnt) +{ + struct dp_catalog_private *catalog = container_of(dp_catalog, + struct dp_catalog_private, dp_catalog); + + u32 mainlink_levels, safe_to_exit_level = 14; + + switch (lane_cnt) { + case 1: + safe_to_exit_level = 14; + break; + case 2: + safe_to_exit_level = 8; + break; + case 4: + safe_to_exit_level = 5; + break; + default: + drm_dbg_dp(catalog->drm_dev, "setting the default safe_to_exit_level=%u\n", + safe_to_exit_level); + break; + } + + mainlink_levels = dp_read_link(catalog, REG_DP_MAINLINK_LEVELS); + mainlink_levels &= 0xFE0; + mainlink_levels |= safe_to_exit_level; + + drm_dbg_dp(catalog->drm_dev, "mainlink_level=0x%x, safe_to_exit_level=0x%x\n", + mainlink_levels, safe_to_exit_level); + + dp_write_link(catalog, REG_DP_MAINLINK_LEVELS, mainlink_levels); +} + void dp_catalog_ctrl_mainlink_ctrl(struct dp_catalog *dp_catalog, bool enable) { diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h index 1f717f4..990c162 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.h +++ b/drivers/gpu/drm/msm/dp/dp_catalog.h @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* - * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved. + * Copyright (c) 2017-2023, The Linux Foundation. All rights reserved. + * Copyright (c) 2021. Qualcomm Innovation Center, Inc. All rights reserved */ #ifndef _DP_CATALOG_H_ @@ -92,6 +93,7 @@ u32 dp_catalog_aux_get_irq(struct dp_catalog *dp_catalog); void dp_catalog_ctrl_state_ctrl(struct dp_catalog *dp_catalog, u32 state); void dp_catalog_ctrl_config_ctrl(struct dp_catalog *dp_catalog, u32 config); void dp_catalog_ctrl_lane_mapping(struct dp_catalog *dp_catalog); +void dp_catalog_ctrl_mainlink_levels(struct dp_catalog *dp_catalog, u8 lane_cnt); void dp_catalog_ctrl_mainlink_ctrl(struct dp_catalog *dp_catalog, bool enable); void dp_catalog_ctrl_config_misc(struct dp_catalog *dp_catalog, u32 cc, u32 tb); void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog, u32 rate, diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index dd26ca6..959a78c 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -161,6 +161,8 @@ static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl) u32 cc, tb; dp_catalog_ctrl_lane_mapping(ctrl->catalog); + dp_catalog_ctrl_mainlink_levels(ctrl->catalog, + ctrl->link->link_params.num_lanes); dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, true); dp_ctrl_config_ctrl(ctrl); @@ -1296,6 +1298,8 @@ static int dp_ctrl_setup_main_link(struct dp_ctrl_private *ctrl, { int ret = 0; + dp_catalog_ctrl_mainlink_levels(ctrl->catalog, + ctrl->link->link_params.num_lanes); dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, true); if (ctrl->link->sink_request & DP_TEST_LINK_PHY_TEST_PATTERN)