From patchwork Fri Jul 7 23:52:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 700097 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 827ECEB64DA for ; Fri, 7 Jul 2023 23:53:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232010AbjGGXxL (ORCPT ); Fri, 7 Jul 2023 19:53:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230290AbjGGXxG (ORCPT ); Fri, 7 Jul 2023 19:53:06 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BE672117; Fri, 7 Jul 2023 16:53:04 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 367NqsSO002880; Fri, 7 Jul 2023 23:52:54 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=cpd75DAMDKgFaNaCRtB+GmGAsI4246TCQIgwS17XDTk=; b=QLhGLA3LMdwp5QF/GM3YXi11RIzvsQ+PDYeHEFw/4xw8xa4JaqGjVKP2MHlR5+LbwZ4G NpuOeYF0odLV/PRxCoDN6HDRvcz9tPxz1CgWRSODwtkz+kMbaf14DU8KzX04o0nqgNLD 5AgLv5RLJSoigC9t30B4Fa5jglIlVVnJI3nNIBOrAp1xGO7a41UlPKv7l8+T2YNOshlP fuUOk3ox9hKGKr6Cb7cSlYg7I18TSF7tLwv/FqxSoa01Ap7D3Bbh4RznNctqxk+9vBoT MuSmZtE9uwXHGgE0F03J0BY2EhAzpTqssOlT0/uZC+tsMPiu/IiFKS1QLXLTN64+jfO2 Zw== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rpfyw9tqg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 07 Jul 2023 23:52:54 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 367NqrJo006362 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 7 Jul 2023 23:52:53 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 15.2.1118.30; Fri, 7 Jul 2023 16:52:52 -0700 From: Kuogee Hsieh To: , , , , , , , , , , CC: Kuogee Hsieh , , , , , , , Subject: [PATCH v1 2/5] drm/msm/dp: incorporate pm_runtime framework into DP driver Date: Fri, 7 Jul 2023 16:52:20 -0700 Message-ID: <1688773943-3887-3-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1688773943-3887-1-git-send-email-quic_khsieh@quicinc.com> References: <1688773943-3887-1-git-send-email-quic_khsieh@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) 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-GUID: VmFsL2X6fMC0pstc3odrL1NmDst_EMjX X-Proofpoint-ORIG-GUID: VmFsL2X6fMC0pstc3odrL1NmDst_EMjX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-07_14,2023-07-06_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 adultscore=0 malwarescore=0 bulkscore=0 mlxscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2307070217 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Incorporating pm runtime framework into DP driver so that power and clock resource handling can be centralized allowing easier control of these resources in preparation of registering aux bus uring probe. Signed-off-by: Kuogee Hsieh --- drivers/gpu/drm/msm/dp/dp_aux.c | 3 ++ drivers/gpu/drm/msm/dp/dp_display.c | 75 +++++++++++++++++++++++++++++-------- 2 files changed, 63 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_aux.c b/drivers/gpu/drm/msm/dp/dp_aux.c index 8e3b677..c592064 100644 --- a/drivers/gpu/drm/msm/dp/dp_aux.c +++ b/drivers/gpu/drm/msm/dp/dp_aux.c @@ -291,6 +291,7 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux, return -EINVAL; } + pm_runtime_get_sync(dp_aux->dev); mutex_lock(&aux->mutex); if (!aux->initted) { ret = -EIO; @@ -364,6 +365,8 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux, exit: mutex_unlock(&aux->mutex); + pm_runtime_mark_last_busy(dp_aux->dev); + pm_runtime_put_autosuspend(dp_aux->dev); return ret; } diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 76f1395..2c5706a 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -309,6 +309,10 @@ static int dp_display_bind(struct device *dev, struct device *master, goto end; } + pm_runtime_enable(dev); + pm_runtime_set_autosuspend_delay(dev, 1000); + pm_runtime_use_autosuspend(dev); + return 0; end: return rc; @@ -320,9 +324,8 @@ static void dp_display_unbind(struct device *dev, struct device *master, struct dp_display_private *dp = dev_get_dp_display_private(dev); struct msm_drm_private *priv = dev_get_drvdata(master); - /* disable all HPD interrupts */ - if (dp->core_initialized) - dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false); + pm_runtime_dont_use_autosuspend(dev); + pm_runtime_disable(dev); kthread_stop(dp->ev_tsk); @@ -466,10 +469,12 @@ static void dp_display_host_init(struct dp_display_private *dp) dp->dp_display.connector_type, dp->core_initialized, dp->phy_initialized); - dp_power_init(dp->power); - dp_ctrl_reset_irq_ctrl(dp->ctrl, true); - dp_aux_init(dp->aux); - dp->core_initialized = true; + if (!dp->core_initialized) { + dp_power_init(dp->power); + dp_ctrl_reset_irq_ctrl(dp->ctrl, true); + dp_aux_init(dp->aux); + dp->core_initialized = true; + } } static void dp_display_host_deinit(struct dp_display_private *dp) @@ -478,10 +483,12 @@ static void dp_display_host_deinit(struct dp_display_private *dp) dp->dp_display.connector_type, dp->core_initialized, dp->phy_initialized); - dp_ctrl_reset_irq_ctrl(dp->ctrl, false); - dp_aux_deinit(dp->aux); - dp_power_deinit(dp->power); - dp->core_initialized = false; + if (dp->core_initialized) { + dp_ctrl_reset_irq_ctrl(dp->ctrl, false); + dp_aux_deinit(dp->aux); + dp_power_deinit(dp->power); + dp->core_initialized = false; + } } static int dp_display_usbpd_configure_cb(struct device *dev) @@ -1304,6 +1311,39 @@ static int dp_display_remove(struct platform_device *pdev) dp_display_deinit_sub_modules(dp); platform_set_drvdata(pdev, NULL); + pm_runtime_put_sync_suspend(&pdev->dev); + + return 0; +} + +static int dp_pm_runtime_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct msm_dp *dp_display = platform_get_drvdata(pdev); + struct dp_display_private *dp; + + dp = container_of(dp_display, struct dp_display_private, dp_display); + + dp_display_host_phy_exit(dp); + dp_catalog_ctrl_hpd_enable(dp->catalog); + dp_display_host_deinit(dp); + + return 0; +} + +static int dp_pm_runtime_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct msm_dp *dp_display = platform_get_drvdata(pdev); + struct dp_display_private *dp; + + dp = container_of(dp_display, struct dp_display_private, dp_display); + + dp_display_host_init(dp); + if (dp_display->is_edp) { + dp_catalog_ctrl_hpd_enable(dp->catalog); + dp_display_host_phy_init(dp); + } return 0; } @@ -1409,6 +1449,7 @@ static int dp_pm_suspend(struct device *dev) } static const struct dev_pm_ops dp_pm_ops = { + SET_RUNTIME_PM_OPS(dp_pm_runtime_suspend, dp_pm_runtime_resume, NULL) .suspend = dp_pm_suspend, .resume = dp_pm_resume, }; @@ -1493,10 +1534,6 @@ static int dp_display_get_next_bridge(struct msm_dp *dp) aux_bus = of_get_child_by_name(dev->of_node, "aux-bus"); if (aux_bus && dp->is_edp) { - dp_display_host_init(dp_priv); - dp_catalog_ctrl_hpd_enable(dp_priv->catalog); - dp_display_host_phy_init(dp_priv); - /* * The code below assumes that the panel will finish probing * by the time devm_of_dp_aux_populate_ep_devices() returns. @@ -1604,6 +1641,7 @@ void dp_bridge_atomic_enable(struct drm_bridge *drm_bridge, dp_hpd_plug_handle(dp_display, 0); mutex_lock(&dp_display->event_mutex); + pm_runtime_get_sync(&dp_display->pdev->dev); state = dp_display->hpd_state; if (state != ST_DISPLAY_OFF && state != ST_MAINLINK_READY) { @@ -1684,6 +1722,8 @@ void dp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge, } drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type); + + pm_runtime_put_sync(&dp_display->pdev->dev); mutex_unlock(&dp_display->event_mutex); } @@ -1723,6 +1763,8 @@ void dp_bridge_hpd_enable(struct drm_bridge *bridge) struct dp_display_private *dp = container_of(dp_display, struct dp_display_private, dp_display); mutex_lock(&dp->event_mutex); + pm_runtime_get_sync(&dp->pdev->dev); + dp_catalog_ctrl_hpd_enable(dp->catalog); /* enable HDP interrupts */ @@ -1744,6 +1786,9 @@ void dp_bridge_hpd_disable(struct drm_bridge *bridge) dp_catalog_ctrl_hpd_disable(dp->catalog); dp_display->internal_hpd = false; + + pm_runtime_mark_last_busy(&dp->pdev->dev); + pm_runtime_put_autosuspend(&dp->pdev->dev); mutex_unlock(&dp->event_mutex); }