MIPS: i8259: Use IRQ domains (079a4601) · Commits · 戴 / test

arch/mips/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -975,6 +975,7 @@ config SYS_SUPPORTS_HOTPLUG_CPU

		config I8259
		bool
		select IRQ_DOMAIN

		config MIPS_BONITO64
		bool

+19 −5

Original line number	Diff line number	Diff line
		@@ -12,6 +12,7 @@
		#include <linux/init.h>
		#include <linux/ioport.h>
		#include <linux/interrupt.h>
		#include <linux/irqdomain.h>
		#include <linux/kernel.h>
		#include <linux/spinlock.h>
		#include <linux/syscore_ops.h>
		@@ -308,6 +309,19 @@ static struct resource pic2_io_resource = {
		.flags = IORESOURCE_BUSY
		};

		static int i8259A_irq_domain_map(struct irq_domain *d, unsigned int virq,
		irq_hw_number_t hw)
		{
		irq_set_chip_and_handler(virq, &i8259A_chip, handle_level_irq);
		irq_set_probe(virq);
		return 0;
		}

		static struct irq_domain_ops i8259A_ops = {
		.map = i8259A_irq_domain_map,
		.xlate = irq_domain_xlate_onecell,
		};

		/*
		* On systems with i8259-style interrupt controllers we assume for
		* driver compatibility reasons interrupts 0 - 15 to be the i8259
		@@ -315,17 +329,17 @@ static struct resource pic2_io_resource = {
		*/
		void __init init_i8259_irqs(void)
		{
		int i;
		struct irq_domain *domain;

		insert_resource(&ioport_resource, &pic1_io_resource);
		insert_resource(&ioport_resource, &pic2_io_resource);

		init_8259A(0);

		for (i = I8259A_IRQ_BASE; i < I8259A_IRQ_BASE + 16; i++) {
		irq_set_chip_and_handler(i, &i8259A_chip, handle_level_irq);
		irq_set_probe(i);
		}
		domain = irq_domain_add_legacy(NULL, 16, I8259A_IRQ_BASE, 0,
		&i8259A_ops, NULL);
		if (!domain)
		panic("Failed to add i8259 IRQ domain");

		setup_irq(I8259A_IRQ_BASE + PIC_CASCADE_IR, &irq2);
		}