Merge branch irq/loongarch-of into irq/irqchip-next

* irq/loongarch-of:
  : .
  : Initial OF support for LoongArch. Funny how it only took
  : *one* release from plumbing ACPI into an unsuspecting
  : architecture to start enabling OF on it. Oh well...
  : .
  irqchip/loongarch-cpu: Fix a missing prototype warning
  dt-bindings: interrupt-controller: add yaml for LoongArch CPU interrupt controller
  irqchip: loongarch-cpu: add DT support

Signed-off-by: Marc Zyngier <maz@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/loongarch,cpu-interrupt-controller.yaml

@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/loongarch,cpu-interrupt-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LoongArch CPU Interrupt Controller
+
+maintainers:
+  - Liu Peibao <liupeibao@loongson.cn>
+
+properties:
+  compatible:
+    const: loongarch,cpu-interrupt-controller
+
+  '#interrupt-cells':
+    const: 1
+
+  interrupt-controller: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - '#interrupt-cells'
+  - interrupt-controller
+
+examples:
+  - |
+    interrupt-controller {
+      compatible = "loongarch,cpu-interrupt-controller";
+      #interrupt-cells = <1>;
+      interrupt-controller;
+    };

drivers/irqchip/irq-loongarch-cpu.c

@@ -92,6 +92,24 @@ static const struct irq_domain_ops loongarch_cpu_intc_irq_domain_ops = {
 	.xlate = irq_domain_xlate_onecell,
 };
 
+#ifdef CONFIG_OF
+static int __init cpuintc_of_init(struct device_node *of_node,
+				struct device_node *parent)
+{
+	cpuintc_handle = of_node_to_fwnode(of_node);
+
+	irq_domain = irq_domain_create_linear(cpuintc_handle, EXCCODE_INT_NUM,
+				&loongarch_cpu_intc_irq_domain_ops, NULL);
+	if (!irq_domain)
+		panic("Failed to add irqdomain for loongarch CPU");
+
+	set_handle_irq(&handle_cpu_irq);
+
+	return 0;
+}
+IRQCHIP_DECLARE(cpu_intc, "loongson,cpu-interrupt-controller", cpuintc_of_init);
+#endif
+
 static int __init liointc_parse_madt(union acpi_subtable_headers *header,
 					const unsigned long end)
 {