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drm: Add a callback from connector registering

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If a driver wants to more precisely control its initialisation and in
particular, defer registering its interfaces with userspace until after
everything is setup, it also needs to defer registering the connectors.
As some devices need more work during registration, add a callback so
that drivers can do additional work if required for a connector.

Correspondingly, we also require an unregister callback.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: go ocd and remvoe unecessary empty kerneldoc line.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465993109-19523-3-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2016-06-15 13:17:47 +01:00
committed by Daniel Vetter
parent b209aca364
commit aaf285e2e0
2 changed files with 43 additions and 2 deletions
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18
drivers/gpu/drm/drm_crtc.c
View File

@@ -990,13 +990,24 @@ int drm_connector_register(struct drm_connector *connector)
ret = drm_debugfs_connector_add(connector);
if (ret) {
drm_sysfs_connector_remove(connector);
return ret;
goto err_sysfs;
}
if (connector->funcs->late_register) {
ret = connector->funcs->late_register(connector);
if (ret)
goto err_debugfs;
}
drm_mode_object_register(connector->dev, &connector->base);
return 0;
err_debugfs:
drm_debugfs_connector_remove(connector);
err_sysfs:
drm_sysfs_connector_remove(connector);
return ret;
}
EXPORT_SYMBOL(drm_connector_register);
@@ -1008,6 +1019,9 @@ EXPORT_SYMBOL(drm_connector_register);
*/
void drm_connector_unregister(struct drm_connector *connector)
{
if (connector->funcs->early_unregister)
connector->funcs->early_unregister(connector);
drm_sysfs_connector_remove(connector);
drm_debugfs_connector_remove(connector);
}