xref: /openbmc/linux/arch/mips/bmips/irq.c (revision d2912cb1) 
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *
4  * Copyright (C) 2014 Broadcom Corporation
5  * Author: Kevin Cernekee <cernekee@gmail.com>
6  */
7 
8 #include <linux/of.h>
9 #include <linux/irqchip.h>
10 
11 #include <asm/bmips.h>
12 #include <asm/irq.h>
13 #include <asm/irq_cpu.h>
14 #include <asm/time.h>
15 
16 static const struct of_device_id smp_intc_dt_match[] = {
17 	{ .compatible = "brcm,bcm7038-l1-intc" },
18 	{ .compatible = "brcm,bcm6345-l1-intc" },
19 	{}
20 };
21 
get_c0_compare_int(void)22 unsigned int get_c0_compare_int(void)
23 {
24 	return CP0_LEGACY_COMPARE_IRQ;
25 }
26 
arch_init_irq(void)27 void __init arch_init_irq(void)
28 {
29 	struct device_node *dn;
30 
31 	/* Only these controllers support SMP IRQ affinity */
32 	dn = of_find_matching_node(NULL, smp_intc_dt_match);
33 	if (dn)
34 		of_node_put(dn);
35 	else
36 		bmips_tp1_irqs = 0;
37 
38 	irqchip_init();
39 }
40 
41 IRQCHIP_DECLARE(mips_cpu_intc, "mti,cpu-interrupt-controller",
42 	     mips_cpu_irq_of_init);
43