static int rvin_graph_init(struct rvin_dev *vin)
{
struct v4l2_async_subdev **subdevs = NULL;
int ret;
/* Parse the graph to extract a list of subdevice DT nodes. */
ret = rvin_graph_parse(vin, vin->dev->of_node);
if (ret < 0) {
vin_err(vin, "Graph parsing failed\n");
goto done;
}
if (!ret) {
vin_err(vin, "No subdev found in graph\n");
goto done;
}
if (ret != 1) {
vin_err(vin, "More then one subdev found in graph\n");
goto done;
}
/* Register the subdevices notifier. */
subdevs = devm_kzalloc(vin->dev, sizeof(*subdevs), GFP_KERNEL);
if (subdevs == NULL) {
ret = -ENOMEM;
goto done;
}
subdevs[0] = &vin->entity.asd;
vin->notifier.subdevs = subdevs;
vin->notifier.num_subdevs = 1;
vin->notifier.bound = rvin_graph_notify_bound;
vin->notifier.unbind = rvin_graph_notify_unbind;
vin->notifier.complete = rvin_graph_notify_complete;
ret = v4l2_async_notifier_register(&vin->v4l2_dev, &vin->notifier);
if (ret < 0) {
vin_err(vin, "Notifier registration failed\n");
goto done;
}
ret = 0;
done:
if (ret < 0) {
v4l2_async_notifier_unregister(&vin->notifier);
of_node_put(vin->entity.node);
}
return ret;
}
static int rvin_digital_graph_init(struct rvin_dev *vin)
{
struct v4l2_async_subdev **subdevs = NULL;
int ret;
ret = rvin_digital_graph_parse(vin);
if (ret)
return ret;
if (!vin->digital.asd.match.fwnode.fwnode) {
vin_dbg(vin, "No digital subdevice found\n");
return -ENODEV;
}
/* Register the subdevices notifier. */
subdevs = devm_kzalloc(vin->dev, sizeof(*subdevs), GFP_KERNEL);
if (subdevs == NULL)
return -ENOMEM;
subdevs[0] = &vin->digital.asd;
vin_dbg(vin, "Found digital subdevice %s\n",
of_node_full_name(to_of_node(subdevs[0]->match.fwnode.fwnode)));
vin->notifier.num_subdevs = 1;
vin->notifier.subdevs = subdevs;
vin->notifier.bound = rvin_digital_notify_bound;
vin->notifier.unbind = rvin_digital_notify_unbind;
vin->notifier.complete = rvin_digital_notify_complete;
ret = v4l2_async_notifier_register(&vin->v4l2_dev, &vin->notifier);
if (ret < 0) {
vin_err(vin, "Notifier registration failed\n");
return ret;
}
return 0;
}
