arch/sh/boards/mach-highlander/irq-r7780rp.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Renesas Solutions Highlander R7780RP-1 Support.
   4  *
   5  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
   6  * Copyright (C) 2006  Paul Mundt
   7  * Copyright (C) 2008  Magnus Damm
   8  */
   9 #include <linux/init.h>
  10 #include <linux/irq.h>
  11 #include <linux/io.h>
  12 #include <mach/highlander.h>
  13
  14 enum {
  15         UNUSED = 0,
  16
  17         /* board specific interrupt sources */
  18
  19         AX88796,          /* Ethernet controller */
  20         PSW,              /* Push Switch */
  21         CF,               /* Compact Flash */
  22
  23         PCI_A,
  24         PCI_B,
  25         PCI_C,
  26         PCI_D,
  27 };
  28
  29 static struct intc_vect vectors[] __initdata = {
  30         INTC_IRQ(PCI_A, 65), /* dirty: overwrite cpu vectors for pci */
  31         INTC_IRQ(PCI_B, 66),
  32         INTC_IRQ(PCI_C, 67),
  33         INTC_IRQ(PCI_D, 68),
  34         INTC_IRQ(CF, IRQ_CF),
  35         INTC_IRQ(PSW, IRQ_PSW),
  36         INTC_IRQ(AX88796, IRQ_AX88796),
  37 };
  38
  39 static struct intc_mask_reg mask_registers[] __initdata = {
  40         { 0xa5000000, 0, 16, /* IRLMSK */
  41           { PCI_A, PCI_B, PCI_C, PCI_D, CF, 0, 0, 0,
  42             0, 0, 0, 0, 0, 0, PSW, AX88796 } },
  43 };
  44
  45 static unsigned char irl2irq[HL_NR_IRL] __initdata = {
  46         65, 66, 67, 68,
  47         IRQ_CF, 0, 0, 0,
  48         0, 0, 0, 0,
  49         IRQ_AX88796, IRQ_PSW
  50 };
  51
  52 static DECLARE_INTC_DESC(intc_desc, "r7780rp", vectors,
  53                          NULL, mask_registers, NULL, NULL);
  54
  55 unsigned char * __init highlander_plat_irq_setup(void)
  56 {
  57         if (__raw_readw(0xa5000600)) {
  58                 printk(KERN_INFO "Using r7780rp interrupt controller.\n");
  59                 register_intc_controller(&intc_desc);
  60                 return irl2irq;
  61         }
  62
  63         return NULL;
  64 }