From: Simon Ser <contact@emersion.fr>
To: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org
Cc: pekka.paalanen@collabora.com, michel@daenzer.net,
alexander.deucher@amd.com, intel-gfx@lists.freedesktop.org
Subject: [PATCH v2 1/7] drm/sysfs: introduce drm_sysfs_connector_hotplug_event
Date: Wed, 09 Jun 2021 21:23:27 +0000 [thread overview]
Message-ID: <I7ivMNimkOH0GJ5SVonqiNBfYEunXBeQpK7ehs64Bk@cp4-web-028.plabs.ch> (raw)
This function sends a hotplug uevent with a CONNECTOR property.
Signed-off-by: Simon Ser <contact@emersion.fr>
---
drivers/gpu/drm/drm_sysfs.c | 25 +++++++++++++++++++++++++
include/drm/drm_sysfs.h | 1 +
2 files changed, 26 insertions(+)
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 968a9560b4aa..8423e44c3035 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -343,6 +343,31 @@ void drm_sysfs_hotplug_event(struct drm_device *dev)
}
EXPORT_SYMBOL(drm_sysfs_hotplug_event);
+/**
+ * drm_sysfs_connector_hotplug_event - generate a DRM uevent for any connector
+ * change
+ * @connector: connector which has changed
+ *
+ * Send a uevent for the DRM connector specified by @connector. This will send
+ * a uevent with the properties HOTPLUG=1 and CONNECTOR.
+ */
+void drm_sysfs_connector_hotplug_event(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ char hotplug_str[] = "HOTPLUG=1", conn_id[21];
+ char *envp[] = { hotplug_str, conn_id, NULL };
+
+ snprintf(conn_id, sizeof(conn_id),
+ "CONNECTOR=%u", connector->base.id);
+
+ drm_dbg_kms(connector->dev,
+ "[CONNECTOR:%d:%s] generating connector hotplug event\n",
+ connector->base.id, connector->name);
+
+ kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);
+}
+EXPORT_SYMBOL(drm_sysfs_connector_hotplug_event);
+
/**
* drm_sysfs_connector_status_event - generate a DRM uevent for connector
* property status change
diff --git a/include/drm/drm_sysfs.h b/include/drm/drm_sysfs.h
index d454ef617b2c..6273cac44e47 100644
--- a/include/drm/drm_sysfs.h
+++ b/include/drm/drm_sysfs.h
@@ -11,6 +11,7 @@ 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_hotplug_event(struct drm_connector *connector);
void drm_sysfs_connector_status_event(struct drm_connector *connector,
struct drm_property *property);
#endif
--
2.31.1
next reply other threads:[~2021-06-09 21:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 21:23 Simon Ser [this message]
2021-06-10 8:23 ` [PATCH v2 1/7] drm/sysfs: introduce drm_sysfs_connector_hotplug_event Pekka Paalanen
2021-06-10 17:12 ` Maxime Ripard
-- strict thread matches above, loose matches on Subject: below --
2021-10-08 18:14 Simon Ser
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