arch/sh/boards/mach-se/7721/irq.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/arch/sh/boards/se/7721/irq.c
   4  *
   5  * Copyright (C) 2008  Renesas Solutions Corp.
   6  */
   7 #include <linux/init.h>
   8 #include <linux/irq.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/io.h>
  11 #include <mach-se/mach/se7721.h>
  12
  13 enum {
  14         UNUSED = 0,
  15
  16         /* board specific interrupt sources */
  17         MRSHPC,
  18 };
  19
  20 static struct intc_vect vectors[] __initdata = {
  21         INTC_IRQ(MRSHPC, MRSHPC_IRQ0),
  22 };
  23
  24 static struct intc_prio_reg prio_registers[] __initdata = {
  25         { FPGA_ILSR6, 0, 8, 4, /* IRLMSK */
  26           { 0, MRSHPC } },
  27 };
  28
  29 static DECLARE_INTC_DESC(intc_desc, "SE7721", vectors,
  30                          NULL, NULL, prio_registers, NULL);
  31
  32 /*
  33  * Initialize IRQ setting
  34  */
  35 void __init init_se7721_IRQ(void)
  36 {
  37         /* PPCR */
  38         __raw_writew(__raw_readw(0xa4050118) & ~0x00ff, 0xa4050118);
  39
  40         register_intc_controller(&intc_desc);
  41         intc_set_priority(MRSHPC_IRQ0, 0xf - MRSHPC_IRQ0);
  42 }