irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro

This allows to remove some boilerplate code. At the same time, call the
set_handle_irq function in the initialization function of the irqchip,
so that we can remove it from the machine declaration.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/mach-sunxi/sunxi.c

@@ -14,13 +14,13 @@
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/irqchip.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/io.h>
 
 #include <linux/clk/sunxi.h>
-#include <linux/irqchip/sunxi.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -104,8 +104,7 @@ static const char * const sunxi_board_dt_compat[] = {
 DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
 	.init_machine	= sunxi_dt_init,
 	.map_io		= sunxi_map_io,
-	.init_irq	= sunxi_init_irq,
-	.handle_irq	= sunxi_handle_irq,
+	.init_irq	= irqchip_init,
 	.restart	= sunxi_restart,
 	.init_time	= sunxi_timer_init,
 	.dt_compat	= sunxi_board_dt_compat,

drivers/irqchip/irq-sunxi.c

@@ -20,7 +20,10 @@
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 
-#include <linux/irqchip/sunxi.h>
+#include <asm/exception.h>
+#include <asm/mach/irq.h>
+
+#include "irqchip.h"
 
 #define SUNXI_IRQ_VECTOR_REG		0x00
 #define SUNXI_IRQ_PROTECTION_REG	0x08
@@ -33,6 +36,8 @@
 static void __iomem *sunxi_irq_base;
 static struct irq_domain *sunxi_irq_domain;
 
+static asmlinkage void __exception_irq_entry sunxi_handle_irq(struct pt_regs *regs);
+
 void sunxi_irq_ack(struct irq_data *irqd)
 {
 	unsigned int irq = irqd_to_hwirq(irqd);
@@ -125,20 +130,13 @@ static int __init sunxi_of_init(struct device_node *node,
 	if (!sunxi_irq_domain)
 		panic("%s: unable to create IRQ domain\n", node->full_name);
 
-	return 0;
-}
-
-static struct of_device_id sunxi_irq_dt_ids[] __initconst = {
-	{ .compatible = "allwinner,sunxi-ic", .data = sunxi_of_init },
-	{ }
-};
+	set_handle_irq(sunxi_handle_irq);
 
-void __init sunxi_init_irq(void)
-{
-	of_irq_init(sunxi_irq_dt_ids);
+	return 0;
 }
+IRQCHIP_DECLARE(allwinner_sunxi_ic, "allwinner,sunxi-ic", sunxi_of_init);
 
-asmlinkage void __exception_irq_entry sunxi_handle_irq(struct pt_regs *regs)
+static asmlinkage void __exception_irq_entry sunxi_handle_irq(struct pt_regs *regs)
 {
 	u32 irq, hwirq;