From patchwork Thu Jun 27 07:00:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Lisovskiy X-Patchwork-Id: 11018937 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 D698E14C0 for ; Thu, 27 Jun 2019 07:01:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7BCC28A07 for ; Thu, 27 Jun 2019 07:01:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BBC5428A18; Thu, 27 Jun 2019 07:01:24 +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=unavailable 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 6F31928A07 for ; Thu, 27 Jun 2019 07:01:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 463D86E5BD; Thu, 27 Jun 2019 07:01:23 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0DFB06E5B7; Thu, 27 Jun 2019 07:01:18 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Jun 2019 00:01:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,422,1557212400"; d="scan'208";a="167333022" Received: from slisovsk-lenovo-ideapad-720s-13ikb.fi.intel.com ([10.237.66.154]) by orsmga006.jf.intel.com with ESMTP; 27 Jun 2019 00:01:14 -0700 From: Stanislav Lisovskiy To: dri-devel@lists.freedesktop.org Date: Thu, 27 Jun 2019 10:00:16 +0300 Message-Id: <20190627070016.7047-3-stanislav.lisovskiy@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190627070016.7047-1-stanislav.lisovskiy@intel.com> References: <20190627070016.7047-1-stanislav.lisovskiy@intel.com> Subject: [Intel-gfx] [PATCH v1 2/3] drm: Introduce change counter to drm_connector X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, martin.peres@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This counter will be used by drm_helper_probe_detect caller to determine if something else had changed except connection status, like for example edid. Hardware specific drivers are responsible for updating this counter when some change is detected to notify the drm part, which can trigger for example hotplug event. Currently there is no way to propagate that to a calling layer, as we send only connection_status update, however as we see with edid the changes can be broader. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105540 Signed-off-by: Stanislav Lisovskiy --- drivers/gpu/drm/drm_connector.c | 1 + drivers/gpu/drm/drm_probe_helper.c | 29 +++++++++++++++++++++++++++-- include/drm/drm_connector.h | 2 ++ 3 files changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 3ccdcf3dfcde..531983707d7f 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -245,6 +245,7 @@ int drm_connector_init(struct drm_device *dev, INIT_LIST_HEAD(&connector->modes); mutex_init(&connector->mutex); connector->edid_blob_ptr = NULL; + connector->change_counter = 0; connector->tile_blob_ptr = NULL; connector->status = connector_status_unknown; connector->display_info.panel_orientation = diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index ef2c468205a2..e8f41fa336c3 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -776,6 +776,7 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev) struct drm_connector_list_iter conn_iter; enum drm_connector_status old_status; bool changed = false; + uint64_t old_change_counter; if (!dev->mode_config.poll_enabled) return false; @@ -789,20 +790,44 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev) old_status = connector->status; + old_change_counter = connector->change_counter; + + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Old change counter %llu\n", connector->base.id, + connector->name, + old_change_counter); + 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, connector->name, drm_get_connector_status_name(old_status), drm_get_connector_status_name(connector->status)); - if (old_status != connector->status) + + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] New change counter %llu\n", + connector->base.id, + connector->name, + connector->change_counter); + + if (old_status != connector->status) { changed = true; + } + + /* Check changing of edid when a connector status still remains + * as "connector_status_connected". + */ + if (connector->status == connector_status_connected && + old_status == connector_status_connected && + old_change_counter != connector->change_counter) { + changed = true; + } } drm_connector_list_iter_end(&conn_iter); mutex_unlock(&dev->mode_config.mutex); - if (changed) + if (changed) { drm_kms_helper_hotplug_event(dev); + DRM_DEBUG_KMS("Sent hotplug event\n"); + } return changed; } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index c6f8486d8b8f..feaa4eb673f6 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1155,6 +1155,8 @@ struct drm_connector { /** @override_edid: has the EDID been overwritten through debugfs for testing? */ bool override_edid; + uint64_t change_counter; + #define DRM_CONNECTOR_MAX_ENCODER 3 /** * @encoder_ids: Valid encoders for this connector. Please only use