From patchwork Fri Mar 22 00:44:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10864739 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 B673F17E0 for ; Fri, 22 Mar 2019 00:43:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 92464294A7 for ; Fri, 22 Mar 2019 00:43:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 864752A588; Fri, 22 Mar 2019 00:43:44 +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 4C72B2A4DC for ; Fri, 22 Mar 2019 00:43:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 29A846E223; Fri, 22 Mar 2019 00:43:30 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 56E7A6E21C; Fri, 22 Mar 2019 00:43:23 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Mar 2019 17:43:23 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,254,1549958400"; d="scan'208";a="142773747" Received: from nuc.iind.intel.com ([10.99.66.149]) by FMSMGA003.fm.intel.com with ESMTP; 21 Mar 2019 17:43:21 -0700 From: Ramalingam C To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, daniel.vetter@ffwll.ch Subject: [PATCH v3 09/10] drm: uevent for connector status change Date: Fri, 22 Mar 2019 06:14:47 +0530 Message-Id: <20190322004448.14045-10-ramalingam.c@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190322004448.14045-1-ramalingam.c@intel.com> References: <20190322004448.14045-1-ramalingam.c@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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP DRM API for generating uevent for a status changes of connector's property. Signed-off-by: Ramalingam C --- drivers/gpu/drm/drm_sysfs.c | 28 ++++++++++++++++++++++++++++ include/drm/drm_sysfs.h | 5 ++++- 2 files changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index ecb7b33002bb..c76c65ca4122 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -330,6 +330,34 @@ void drm_sysfs_hotplug_event(struct drm_device *dev) } EXPORT_SYMBOL(drm_sysfs_hotplug_event); +/** + * drm_sysfs_connector_status_event - generate a DRM uevent for connector + * property status change + * @connector: connector on which property status changed + * @property: connector property whoes status changed. + * + * Send a uevent for the DRM device specified by @dev. Currently we + * set HOTPLUG=1 and connector id along with it property id related to status + * changed. + */ +void drm_sysfs_connector_status_event(struct drm_connector *connector, + struct drm_property *property) +{ + struct drm_device *dev = connector->dev; + char hotplug_str[] = "HOTPLUG=1", conn_id[30], prop_id[30]; + char *envp[4] = { hotplug_str, conn_id, prop_id, NULL }; + + snprintf(conn_id, ARRAY_SIZE(conn_id), + "CONNECTOR=%u", connector->base.id); + snprintf(prop_id, ARRAY_SIZE(prop_id), + "PROPERTY=%u", property->base.id); + + DRM_DEBUG("generating connector status event\n"); + + kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp); +} +EXPORT_SYMBOL(drm_sysfs_connector_status_event); + static void drm_sysfs_release(struct device *dev) { kfree(dev); diff --git a/include/drm/drm_sysfs.h b/include/drm/drm_sysfs.h index 4f311e836cdc..d454ef617b2c 100644 --- a/include/drm/drm_sysfs.h +++ b/include/drm/drm_sysfs.h @@ -4,10 +4,13 @@ struct drm_device; struct device; +struct drm_connector; +struct drm_property; int drm_class_device_register(struct device *dev); void drm_class_device_unregister(struct device *dev); void drm_sysfs_hotplug_event(struct drm_device *dev); - +void drm_sysfs_connector_status_event(struct drm_connector *connector, + struct drm_property *property); #endif