MIPS: ralink: add CPU interrupt controller to of_irq_ids

Convert the ralink IRQ code to make use of the new MIPS IRQ controller OF
mappings.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4900/

arch/mips/ralink/dts/rt3050.dtsi

@@ -13,6 +13,13 @@
 		bootargs = "console=ttyS0,57600 init=/init";
 	};
 
+	cpuintc: cpuintc@0 {
+		#address-cells = <0>;
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		compatible = "mti,cpu-interrupt-controller";
+	};
+
 	palmbus@10000000 {
 		compatible = "palmbus";
 		reg = <0x10000000 0x200000>;
@@ -37,6 +44,9 @@
 
 			interrupt-controller;
 			#interrupt-cells = <1>;
+
+			interrupt-parent = <&cpuintc>;
+			interrupts = <2>;
 		};
 
 		memc@300 {

arch/mips/ralink/irq.c

@@ -128,8 +128,11 @@ static int __init intc_of_init(struct device_node *node,
 {
 	struct resource res;
 	struct irq_domain *domain;
+	int irq;
 
-	mips_cpu_irq_init();
+	irq = irq_of_parse_and_map(node, 0);
+	if (!irq)
+		panic("Failed to get INTC IRQ");
 
 	if (of_address_to_resource(node, 0, &res))
 		panic("Failed to get intc memory range");
@@ -156,8 +159,8 @@ static int __init intc_of_init(struct device_node *node,
 
 	rt_intc_w32(INTC_INT_GLOBAL, INTC_REG_ENABLE);
 
-	irq_set_chained_handler(RALINK_CPU_IRQ_INTC, ralink_intc_irq_handler);
-	irq_set_handler_data(RALINK_CPU_IRQ_INTC, domain);
+	irq_set_chained_handler(irq, ralink_intc_irq_handler);
+	irq_set_handler_data(irq, domain);
 
 	cp0_perfcount_irq = irq_create_mapping(domain, 9);
 
@@ -165,6 +168,7 @@ static int __init intc_of_init(struct device_node *node,
 }
 
 static struct of_device_id __initdata of_irq_ids[] = {
+	{ .compatible = "mti,cpu-interrupt-controller", .data = mips_cpu_intc_init },
 	{ .compatible = "ralink,rt2880-intc", .data = intc_of_init },
 	{},
 };