arch/mips/bmips/irq.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify it
   3  * under the terms of the GNU General Public License version 2 as published
   4  * by the Free Software Foundation.
   5  *
   6  * Copyright (C) 2014 Broadcom Corporation
   7  * Author: Kevin Cernekee <cernekee@gmail.com>
   8  */
   9
  10 #include <linux/of.h>
  11 #include <linux/irqchip.h>
  12
  13 #include <asm/bmips.h>
  14 #include <asm/irq.h>
  15 #include <asm/irq_cpu.h>
  16 #include <asm/time.h>
  17
  18 static const struct of_device_id smp_intc_dt_match[] = {
  19         { .compatible = "brcm,bcm7038-l1-intc" },
  20         { .compatible = "brcm,bcm6345-l1-intc" },
  21         {}
  22 };
  23
  24 unsigned int get_c0_compare_int(void)
  25 {
  26         return CP0_LEGACY_COMPARE_IRQ;
  27 }
  28
  29 void __init arch_init_irq(void)
  30 {
  31         struct device_node *dn;
  32
  33         /* Only these controllers support SMP IRQ affinity */
  34         dn = of_find_matching_node(NULL, smp_intc_dt_match);
  35         if (dn)
  36                 of_node_put(dn);
  37         else
  38                 bmips_tp1_irqs = 0;
  39
  40         irqchip_init();
  41 }
  42
  43 IRQCHIP_DECLARE(mips_cpu_intc, "mti,cpu-interrupt-controller",
  44              mips_cpu_irq_of_init);