memset(r, 0, sizeof(*r));
/*
- * Get optional "interrupts-names" property to add a name
+ * Get optional "interrupt-names" property to add a name
* to the resource.
*/
of_property_read_string_index(dev, "interrupt-names", index,
}
EXPORT_SYMBOL_GPL(of_irq_to_resource);
+/**
+ * of_irq_get - Decode a node's IRQ and return it as a Linux irq number
+ * @dev: pointer to device tree node
+ * @index: zero-based index of the irq
+ *
+ * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+ * is not yet created.
+ *
+ */
+int of_irq_get(struct device_node *dev, int index)
+{
+ int rc;
+ struct of_phandle_args oirq;
+ struct irq_domain *domain;
+
+ rc = of_irq_parse_one(dev, index, &oirq);
+ if (rc)
+ return rc;
+
+ domain = irq_find_host(oirq.np);
+ if (!domain)
+ return -EPROBE_DEFER;
+
+ return irq_create_of_mapping(&oirq);
+}
+
/**
* of_irq_count - Count the number of IRQs a node uses
* @dev: pointer to device tree node