arch/mips/bmips/irq.c

   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
  22 unsigned int get_c0_compare_int(void)
  23 {
  24         return CP0_LEGACY_COMPARE_IRQ;
  25 }
  26
  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);