From patchwork Wed Sep 27 20:53:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 13401669 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 13058E82CDA for ; Wed, 27 Sep 2023 20:54:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229883AbjI0Uyn (ORCPT ); Wed, 27 Sep 2023 16:54:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229772AbjI0Uyb (ORCPT ); Wed, 27 Sep 2023 16:54:31 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A566126; Wed, 27 Sep 2023 13:54:29 -0700 (PDT) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38RKFTXk012530; Wed, 27 Sep 2023 20:54:10 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=9a+/WMRmVoVO3fhRoKc8WHoZzcWwvB2xv3lI6f3C6r8=; b=j2XfStHSTEMh4Cjn/HeILLkK7TVzWoko6iXoLEwNWhxuJ9dPTVpVBM3XCN8AUi66OMV4 Y+zdVim5fXA9RFLaZnUnROdAAklfE7Cd/lXaThpD0ZdNbvQGafJeamBUPjFH3tmeaTzx BRHW810lIXNR0llsl6k7r1kwZKkw7+IhknZ47ZXbvJcuGz8xM7Q208azD3hu9DbS49Bs /T+NstCRBKHZP4zo/ep2Ivqhv6L1yH70SCwEY/9vVK5KOiIzXsyRlS19SawgNAuSYu23 dkgIupX9XgYfEqNjmrau6Zb0y0e28uSAO2+LKo4sf59SqBFAuTlecuat5ZBACmTwni5g cA== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3tct5gr6b2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 27 Sep 2023 20:54:09 +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 38RKs9Vd028921 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 27 Sep 2023 20:54:09 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; Wed, 27 Sep 2023 13:54:08 -0700 From: Kuogee Hsieh To: , , , , , , , , , , CC: Kuogee Hsieh , , , , , , , Subject: [PATCH v4 7/8] drm/msm/dp: add pm_runtime_force_suspend()/resume() Date: Wed, 27 Sep 2023 13:53:47 -0700 Message-ID: <1695848028-18023-8-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1695848028-18023-1-git-send-email-quic_khsieh@quicinc.com> References: <1695848028-18023-1-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: 47Ojmjz55pXuYqva2zIkTd-XpY07A5o2 X-Proofpoint-GUID: 47Ojmjz55pXuYqva2zIkTd-XpY07A5o2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-09-27_13,2023-09-27_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 mlxlogscore=999 impostorscore=0 phishscore=0 adultscore=0 suspectscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 clxscore=1015 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2309270178 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org After incorporated pm_runtime framework into eDP/DP driver, the original dp_pm_suspend() to handle power off both DP phy and controller during suspend and dp_pm_resume() to handle power on both DP phy and controller during resume are not necessary since those function are replaced by dp_pm_runtime_suspend() and dp_pm_runtime_resume() through pm runtime framework. Therefore add pm framework provides functions, pm_runtime_force_suspend()/resume() to complete incorporating pm runtime framework into DP driver. Changes in v4: -- drop both dp_pm_prepare() and dp_pm_compete() from this change -- delete ST_SUSPENDED state -- rewording commit text to add more details regrading the purpose of this change Changes in v3: -- replace dp_pm_suspend() with pm_runtime_force_suspend() -- replace dp_pm_resume() with pm_runtime_force_resume() Signed-off-by: Kuogee Hsieh --- drivers/gpu/drm/msm/dp/dp_display.c | 113 ++---------------------------------- 1 file changed, 5 insertions(+), 108 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 9158a2c..711d262 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -49,7 +49,6 @@ enum { ST_CONNECTED, ST_DISCONNECT_PENDING, ST_DISPLAY_OFF, - ST_SUSPENDED, }; enum { @@ -560,7 +559,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data) drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n", dp->dp_display.connector_type, state); - if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) { + if (state == ST_DISPLAY_OFF) { mutex_unlock(&dp->event_mutex); return 0; } @@ -674,7 +673,7 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data) drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n", dp->dp_display.connector_type, state); - if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) { + if (state == ST_DISPLAY_OFF) { mutex_unlock(&dp->event_mutex); return 0; } @@ -1321,110 +1320,10 @@ static int dp_pm_runtime_resume(struct device *dev) return 0; } -static int dp_pm_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; - int sink_count = 0; - - dp = container_of(dp_display, struct dp_display_private, dp_display); - - mutex_lock(&dp->event_mutex); - - drm_dbg_dp(dp->drm_dev, - "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n", - dp->dp_display.connector_type, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - /* start from disconnected state */ - dp->hpd_state = ST_DISCONNECTED; - - /* turn on dp ctrl/phy */ - dp_display_host_init(dp); - - if (dp_display->is_edp) - dp_catalog_ctrl_hpd_enable(dp->catalog); - - if (dp_catalog_link_is_connected(dp->catalog)) { - /* - * set sink to normal operation mode -- D0 - * before dpcd read - */ - dp_display_host_phy_init(dp); - dp_link_psm_config(dp->link, &dp->panel->link_info, false); - sink_count = drm_dp_read_sink_count(dp->aux); - if (sink_count < 0) - sink_count = 0; - - dp_display_host_phy_exit(dp); - } - - dp->link->sink_count = sink_count; - /* - * can not declared display is connected unless - * HDMI cable is plugged in and sink_count of - * dongle become 1 - * also only signal audio when disconnected - */ - if (dp->link->sink_count) { - dp->dp_display.link_ready = true; - } else { - dp->dp_display.link_ready = false; - dp_display_handle_plugged_change(dp_display, false); - } - - drm_dbg_dp(dp->drm_dev, - "After, type=%d sink=%d conn=%d core_init=%d phy_init=%d power=%d\n", - dp->dp_display.connector_type, dp->link->sink_count, - dp->dp_display.link_ready, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - mutex_unlock(&dp->event_mutex); - - return 0; -} - -static int dp_pm_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); - - mutex_lock(&dp->event_mutex); - - drm_dbg_dp(dp->drm_dev, - "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n", - dp->dp_display.connector_type, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - /* mainlink enabled */ - if (dp_power_clk_status(dp->power, DP_CTRL_PM)) - dp_ctrl_off_link_stream(dp->ctrl); - - dp_display_host_phy_exit(dp); - - /* host_init will be called at pm_resume */ - dp_display_host_deinit(dp); - - dp->hpd_state = ST_SUSPENDED; - - drm_dbg_dp(dp->drm_dev, - "After, type=%d core_inited=%d phy_inited=%d power_on=%d\n", - dp->dp_display.connector_type, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - mutex_unlock(&dp->event_mutex); - - return 0; -} - 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, + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) }; static struct platform_driver dp_display_driver = { @@ -1658,9 +1557,6 @@ void dp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge, dp_display = container_of(dp, struct dp_display_private, dp_display); - if (dp->is_edp) - dp_hpd_unplug_handle(dp_display, 0); - mutex_lock(&dp_display->event_mutex); state = dp_display->hpd_state; @@ -1748,6 +1644,7 @@ void dp_bridge_hpd_disable(struct drm_bridge *bridge) dp_catalog_ctrl_hpd_disable(dp->catalog); dp_display->internal_hpd = false; + dp->hpd_state = ST_DISCONNECTED; pm_runtime_mark_last_busy(&dp->pdev->dev); pm_runtime_put_autosuspend(&dp->pdev->dev);