From patchwork Fri Apr 12 14:06:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gwan-gyeong Mun X-Patchwork-Id: 10898465 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CB60417E0 for ; Fri, 12 Apr 2019 14:06:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A473628D5E for ; Fri, 12 Apr 2019 14:06:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9563F28D77; Fri, 12 Apr 2019 14:06:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2A5E028D5E for ; Fri, 12 Apr 2019 14:06:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 61847899DE; Fri, 12 Apr 2019 14:06:27 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4C50E899E6; Fri, 12 Apr 2019 14:06:25 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Apr 2019 07:06:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,341,1549958400"; d="scan'208";a="291021838" Received: from helsinki.fi.intel.com ([10.237.66.174]) by orsmga004.jf.intel.com with ESMTP; 12 Apr 2019 07:06:22 -0700 From: Gwan-gyeong Mun To: intel-gfx@lists.freedesktop.org Subject: [PATCH v6 1/2] drm: Add detection of changing of edid on between suspend and resume Date: Fri, 12 Apr 2019 17:06:16 +0300 Message-Id: <20190412140617.17648-2-gwan-gyeong.mun@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190412140617.17648-1-gwan-gyeong.mun@intel.com> References: <20190412140617.17648-1-gwan-gyeong.mun@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stanislav.lisovskiy@intel.com, mika.kahola@intel.com, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The hotplug detection routine of drm_helper_hpd_irq_event() can detect changing of status of connector, but it can not detect changing of edid. Following scenario requires detection of changing of edid. 1) plug display device to a connector 2) system suspend 3) unplug 1)'s display device and plug the other display device to a connector 4) system resume It adds edid check routine when a connector status still remains as "connector_status_connected". v2: Add NULL check before comparing of EDIDs. v3: Make it as part of existing drm_helper_hpd_irq_event() (Stan, Mika) v4: Rebased v5: Use a cached edid property blob data of connector instead of adding a new detected_edid variable. (Maarten) Add an using of reference count for getting a cached edid property blob data. (Maarten) v6: Fixes coding style. Testcase: igt/kms_chamelium/hdmi-edid-change-during-hibernate Testcase: igt/kms_chamelium/hdmi-edid-change-during-suspend Testcase: igt/kms_chamelium/dp-edid-change-during-hibernate Testcase: igt/kms_chamelium/dp-edid-change-during-suspend Signed-off-by: Gwan-gyeong Mun --- drivers/gpu/drm/drm_probe_helper.c | 34 +++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index 6fd08e04b323..da8aff116ca4 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -742,7 +742,16 @@ EXPORT_SYMBOL(drm_kms_helper_poll_fini); * panels. * * This helper function is useful for drivers which can't or don't track hotplug - * interrupts for each connector. + * interrupts for each connector. And it also supports a detection of changing + * of edid on between suspend and resume when a connector status still remains + * as "connector_status_connected". + * + * Following scenario requires detection of changing of edid. + * 1) plug display device to a connector + * 2) system suspend + * 3) unplug 1)'s display device and plug the other display device to a + * connector + * 4) system resume * * Drivers which support hotplug interrupts for each connector individually and * which have a more fine-grained detect logic should bypass this code and @@ -760,6 +769,7 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev) struct drm_connector *connector; struct drm_connector_list_iter conn_iter; enum drm_connector_status old_status; + struct drm_property_blob *old_edid_blob_ptr; bool changed = false; if (!dev->mode_config.poll_enabled) @@ -774,6 +784,11 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev) old_status = connector->status; + if (connector->edid_blob_ptr) + old_edid_blob_ptr = drm_property_blob_get(connector->edid_blob_ptr); + else + old_edid_blob_ptr = NULL; + connector->status = drm_helper_probe_detect(connector, NULL, false); DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", connector->base.id, @@ -782,6 +797,23 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev) drm_get_connector_status_name(connector->status)); if (old_status != connector->status) changed = true; + + /* Check changing of edid when a connector status still remains + * as "connector_status_connected". + */ + if (old_edid_blob_ptr && connector->edid_blob_ptr && + old_status == connector->status && + old_status == connector_status_connected) { + if (memcmp(old_edid_blob_ptr->data, + connector->edid_blob_ptr->data, + old_edid_blob_ptr->length)) { + changed = true; + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] edid updated\n", + connector->base.id, + connector->name); + } + } + drm_property_blob_put(old_edid_blob_ptr); } drm_connector_list_iter_end(&conn_iter); mutex_unlock(&dev->mode_config.mutex); From patchwork Fri Apr 12 14:06:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gwan-gyeong Mun X-Patchwork-Id: 10898469 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 17ADF139A for ; Fri, 12 Apr 2019 14:06:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EC02928D77 for ; Fri, 12 Apr 2019 14:06:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E035328D7A; Fri, 12 Apr 2019 14:06:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2D9D128D77 for ; Fri, 12 Apr 2019 14:06:35 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 65094899E8; Fri, 12 Apr 2019 14:06:29 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1D88C899E8; Fri, 12 Apr 2019 14:06:28 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Apr 2019 07:06:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,341,1549958400"; d="scan'208";a="291021848" Received: from helsinki.fi.intel.com ([10.237.66.174]) by orsmga004.jf.intel.com with ESMTP; 12 Apr 2019 07:06:25 -0700 From: Gwan-gyeong Mun To: intel-gfx@lists.freedesktop.org Subject: [PATCH v6 2/2] drm/i915: Add a missed update of edid property of drm connector Date: Fri, 12 Apr 2019 17:06:17 +0300 Message-Id: <20190412140617.17648-3-gwan-gyeong.mun@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190412140617.17648-1-gwan-gyeong.mun@intel.com> References: <20190412140617.17648-1-gwan-gyeong.mun@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stanislav.lisovskiy@intel.com, mika.kahola@intel.com, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP After suspend/resume process, hotplug detection is handled by i915_hpd_poll_init_work() workqueue. While intel_hdmi_detect() or intel_dp_detect() are called, intel_hdmi_set_edid() or intel_dp_set_edid() only update an internal detect_edid variable of intel_connector. A missed update of edid property of drm_connector leads incorrect behavior of drm_helper_hpd_irq_event() on below testcases. It adds a missed update of edid property of drm connector and updates drm edid modes, while i915_hpd_poll_init_work() workqueue works. Testcase: igt/kms_chamelium/hdmi-edid-change-during-hibernate Testcase: igt/kms_chamelium/hdmi-edid-change-during-suspend Testcase: igt/kms_chamelium/dp-edid-change-during-hibernate Testcase: igt/kms_chamelium/dp-edid-change-during-suspend Signed-off-by: Gwan-gyeong Mun --- drivers/gpu/drm/i915/intel_dp.c | 1 + drivers/gpu/drm/i915/intel_hdmi.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index c4e36759a756..0301e58495b4 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -5379,6 +5379,7 @@ intel_dp_set_edid(struct intel_dp *intel_dp) intel_dp->has_audio = drm_detect_monitor_audio(edid); drm_dp_cec_set_edid(&intel_dp->aux, edid); + intel_connector_update_modes(&intel_connector->base, edid); } static void diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index e1005d7b75fd..b53360c4d0ef 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -2493,6 +2493,7 @@ intel_hdmi_set_edid(struct drm_connector *connector) } cec_notifier_set_phys_addr_from_edid(intel_hdmi->cec_notifier, edid); + intel_connector_update_modes(connector, edid); return connected; }