From patchwork Fri Sep 15 21:38:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 13387743 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 A4734CD37AE for ; Fri, 15 Sep 2023 21:38:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5853310E694; Fri, 15 Sep 2023 21:38:51 +0000 (UTC) Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4DA2510E693; Fri, 15 Sep 2023 21:38:49 +0000 (UTC) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38FKR9rX023261; Fri, 15 Sep 2023 21:38:44 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=M0Vdc72sN2/VfvZxPhhsBYjAVWzv6O/HLCdbuL33cmI=; b=Ncjw1pGoon9qiJTk3DBRXe9B3rDYRcVVujsxv6wJm2IwaJ1mVp7v5nRY4vAA60HVsbWp GzfYYMgnr83VjK9Oml0pXL6eShazqGzBKMXksyzcx+W4b9SzyU98GWplIgzHj7jpZtTW 1TdIT1s5j6GPr/xsZmGnKuIfiAiXxsPwMFnbE1vAHXaaMLaG7hCVKy5HER2iJMbGqDR6 XOsXHTpLjXUUETKfWTDHRS6Z7a1NpyKrKYwmSR3pFHdOyfT4RlUvQifrLgo2k9x7jv/w PK1dJ2/a6bajVTR6ibpae9WOlcTNM37nmiNxqMJosPQFnCID7pW73vQhi5RPkh4dm7k+ 6Q== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3t4g5tj5xy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 15 Sep 2023 21:38:44 +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 38FLchSp007315 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 15 Sep 2023 21:38:43 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 15.2.1118.36; Fri, 15 Sep 2023 14:38:42 -0700 From: Kuogee Hsieh To: , , , , , , , , , , Subject: [PATCH v3 4/7] drm/msm/dp: incorporate pm_runtime framework into DP driver Date: Fri, 15 Sep 2023 14:38:18 -0700 Message-ID: <1694813901-26952-5-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1694813901-26952-1-git-send-email-quic_khsieh@quicinc.com> References: <1694813901-26952-1-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-ORIG-GUID: pJlbVQr0X-2OuclkuPwwkBkfiZsjm9DN X-Proofpoint-GUID: pJlbVQr0X-2OuclkuPwwkBkfiZsjm9DN X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-15_17,2023-09-15_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 impostorscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 mlxscore=0 spamscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309150194 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: , Cc: quic_sbillaka@quicinc.com, linux-arm-msm@vger.kernel.org, quic_abhinavk@quicinc.com, Kuogee Hsieh , marijn.suijten@somainline.org, quic_jesszhan@quicinc.com, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Currently DP driver is executed independent of PM runtime framework. This lead DP driver incompatible with others. Incorporating pm runtime framework into DP driver so that both power and clocks to enable/disable host controller fits with PM runtime mechanism. Once pm runtime framework is incorporated into DP driver, wake up device from power up path is not necessary. Hence remove it. Both EV_POWER_PM_GET and EV_POWER_PM_PUT events are introduced to perform pm runtime control for the HPD GPIO routing to a display-connector case. Changes in v3: -- incorporate removing pm_runtime_xx() from dp_pwer.c to this patch -- use pm_runtime_resume_and_get() instead of pm_runtime_get() -- error checking pm_runtime_resume_and_get() return value -- add EV_POWER_PM_GET and PM_EV_POWER_PUT to handle HPD_GPIO case Signed-off-by: Kuogee Hsieh --- drivers/gpu/drm/msm/dp/dp_aux.c | 5 ++ drivers/gpu/drm/msm/dp/dp_display.c | 114 +++++++++++++++++++++++++++--------- drivers/gpu/drm/msm/dp/dp_power.c | 9 --- 3 files changed, 90 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_aux.c b/drivers/gpu/drm/msm/dp/dp_aux.c index 8e3b677..8fa93c5 100644 --- a/drivers/gpu/drm/msm/dp/dp_aux.c +++ b/drivers/gpu/drm/msm/dp/dp_aux.c @@ -291,6 +291,9 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux, return -EINVAL; } + if (pm_runtime_resume_and_get(dp_aux->dev)) + return -EINVAL; + mutex_lock(&aux->mutex); if (!aux->initted) { ret = -EIO; @@ -364,6 +367,8 @@ 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 59f9d85..e7af7f7 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -60,6 +60,8 @@ enum { EV_IRQ_HPD_INT, EV_HPD_UNPLUG_INT, EV_USER_NOTIFICATION, + EV_POWER_PM_GET, + EV_POWER_PM_PUT, }; #define EVENT_TIMEOUT (HZ/10) /* 100ms */ @@ -276,13 +278,6 @@ static int dp_display_bind(struct device *dev, struct device *master, dp->dp_display.drm_dev = drm; priv->dp[dp->id] = &dp->dp_display; - rc = dp->parser->parse(dp->parser); - if (rc) { - DRM_ERROR("device tree parsing failed\n"); - goto end; - } - - dp->drm_dev = drm; dp->aux->drm_dev = drm; rc = dp_aux_register(dp->aux); @@ -291,12 +286,6 @@ static int dp_display_bind(struct device *dev, struct device *master, goto end; } - rc = dp_power_client_init(dp->power); - if (rc) { - DRM_ERROR("Power client create failed\n"); - goto end; - } - rc = dp_register_audio_driver(dev, dp->audio); if (rc) { DRM_ERROR("Audio registration Dp failed\n"); @@ -320,10 +309,6 @@ 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); - kthread_stop(dp->ev_tsk); of_dp_aux_depopulate_bus(dp->aux); @@ -467,6 +452,18 @@ static void dp_display_host_deinit(struct dp_display_private *dp) dp->core_initialized = false; } +static void dp_display_pm_get(struct dp_display_private *dp) +{ + if (pm_runtime_resume_and_get(&dp->pdev->dev)) + DRM_ERROR("failed to start power\n"); +} + +static void dp_display_pm_put(struct dp_display_private *dp) +{ + pm_runtime_mark_last_busy(&dp->pdev->dev); + pm_runtime_put_autosuspend(&dp->pdev->dev); +} + static int dp_display_usbpd_configure_cb(struct device *dev) { struct dp_display_private *dp = dev_get_dp_display_private(dev); @@ -1096,7 +1093,6 @@ static int hpd_event_thread(void *data) switch (todo->event_id) { case EV_HPD_INIT_SETUP: - dp_display_host_init(dp_priv); break; case EV_HPD_PLUG_INT: dp_hpd_plug_handle(dp_priv, todo->data); @@ -1111,6 +1107,12 @@ static int hpd_event_thread(void *data) dp_display_send_hpd_notification(dp_priv, todo->data); break; + case EV_POWER_PM_GET: + dp_display_pm_get(dp_priv); + break; + case EV_POWER_PM_PUT: + dp_display_pm_put(dp_priv); + break; default: break; } @@ -1251,6 +1253,18 @@ static int dp_display_probe(struct platform_device *pdev) return -EPROBE_DEFER; } + rc = dp->parser->parse(dp->parser); + if (rc) { + DRM_ERROR("device tree parsing failed\n"); + return -EPROBE_DEFER; + } + + rc = dp_power_client_init(dp->power); + if (rc) { + DRM_ERROR("Power client create failed\n"); + return -EPROBE_DEFER; + } + /* setup event q */ mutex_init(&dp->event_mutex); init_waitqueue_head(&dp->event_q); @@ -1263,6 +1277,10 @@ static int dp_display_probe(struct platform_device *pdev) platform_set_drvdata(pdev, &dp->dp_display); + devm_pm_runtime_enable(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 1000); + pm_runtime_use_autosuspend(&pdev->dev); + rc = dp_display_request_irq(dp); if (rc) return rc; @@ -1285,6 +1303,36 @@ static int dp_display_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); + pm_runtime_put_sync_suspend(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static int dp_pm_runtime_suspend(struct device *dev) +{ + struct dp_display_private *dp = dev_get_dp_display_private(dev); + + if (dp->dp_display.is_edp) { + dp_display_host_phy_exit(dp); + dp_catalog_ctrl_hpd_disable(dp->catalog); + } + dp_display_host_deinit(dp); + + return 0; +} + +static int dp_pm_runtime_resume(struct device *dev) +{ + struct dp_display_private *dp = dev_get_dp_display_private(dev); + + dp_display_host_init(dp); + if (dp->dp_display.is_edp) { + dp_catalog_ctrl_hpd_enable(dp->catalog); + dp_display_host_phy_init(dp); + } + return 0; } @@ -1389,6 +1437,7 @@ 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, }; @@ -1473,10 +1522,6 @@ 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. @@ -1578,6 +1623,11 @@ void dp_bridge_atomic_enable(struct drm_bridge *drm_bridge, dp_hpd_plug_handle(dp_display, 0); mutex_lock(&dp_display->event_mutex); + if (pm_runtime_resume_and_get(&dp_display->pdev->dev)) { + DRM_ERROR("failed to start power\n"); + mutex_unlock(&dp_display->event_mutex); + return; + } state = dp_display->hpd_state; if (state != ST_DISPLAY_OFF && state != ST_MAINLINK_READY) { @@ -1658,6 +1708,8 @@ 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); } @@ -1697,6 +1749,9 @@ 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); + if (pm_runtime_resume_and_get(&dp->pdev->dev)) + DRM_ERROR("failed to start power\n"); + dp_catalog_ctrl_hpd_enable(dp->catalog); /* enable HDP interrupts */ @@ -1718,6 +1773,9 @@ 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); } @@ -1732,13 +1790,11 @@ void dp_bridge_hpd_notify(struct drm_bridge *bridge, if (dp_display->internal_hpd) return; - if (!dp->core_initialized) { - drm_dbg_dp(dp->drm_dev, "not initialized\n"); - return; - } - - if (!dp_display->link_ready && status == connector_status_connected) + if (!dp_display->link_ready && status == connector_status_connected) { + dp_add_event(dp, EV_POWER_PM_GET, 0, 0); dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0); - else if (dp_display->link_ready && status == connector_status_disconnected) + } else if (dp_display->link_ready && status == connector_status_disconnected) { dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0); + dp_add_event(dp, EV_POWER_PM_PUT, 0, 0); + } } diff --git a/drivers/gpu/drm/msm/dp/dp_power.c b/drivers/gpu/drm/msm/dp/dp_power.c index 5cb84ca..ed2f62a 100644 --- a/drivers/gpu/drm/msm/dp/dp_power.c +++ b/drivers/gpu/drm/msm/dp/dp_power.c @@ -152,8 +152,6 @@ int dp_power_client_init(struct dp_power *dp_power) power = container_of(dp_power, struct dp_power_private, dp_power); - pm_runtime_enable(power->dev); - return dp_power_clk_init(power); } @@ -162,8 +160,6 @@ void dp_power_client_deinit(struct dp_power *dp_power) struct dp_power_private *power; power = container_of(dp_power, struct dp_power_private, dp_power); - - pm_runtime_disable(power->dev); } int dp_power_init(struct dp_power *dp_power) @@ -173,11 +169,7 @@ int dp_power_init(struct dp_power *dp_power) power = container_of(dp_power, struct dp_power_private, dp_power); - pm_runtime_get_sync(power->dev); - rc = dp_power_clk_enable(dp_power, DP_CORE_PM, true); - if (rc) - pm_runtime_put_sync(power->dev); return rc; } @@ -189,7 +181,6 @@ int dp_power_deinit(struct dp_power *dp_power) power = container_of(dp_power, struct dp_power_private, dp_power); dp_power_clk_enable(dp_power, DP_CORE_PM, false); - pm_runtime_put_sync(power->dev); return 0; }