diff options
| author |   Simon Ser <contact@emersion.fr> | 2021-10-18 08:47:25 +0000 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2021-11-02 14:27:06 +0100 |
| commit | 0d6a8c5e96833f644b91528de6a3a4398214fb9c (patch) | |
| tree | 1c4e617fa6069501df5d53d41b315d6611c5a462 /drivers/gpu/drm/drm_sysfs.c | |
| parent | drm/sched: Avoid lockdep spalt on killing a processes (diff) | |
| download | linux-0d6a8c5e96833f644b91528de6a3a4398214fb9c.tar.xz linux-0d6a8c5e96833f644b91528de6a3a4398214fb9c.zip | |
drm/sysfs: introduce drm_sysfs_connector_hotplug_event
This function sends a hotplug uevent with a CONNECTOR property.
Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211018084707.32253-2-contact@emersion.fr
Diffstat (limited to 'drivers/gpu/drm/drm_sysfs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_sysfs.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index 76ff6ec3421b..430e00b16eec 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -410,6 +410,31 @@ 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 * @connector: connector on which property status changed |