arch/sh/boards/renesas/r7780rp/irq-r7780rp.c

   1 /*
   2  * Renesas Solutions Highlander R7780RP-1 Support.
   3  *
   4  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
   5  * Copyright (C) 2006  Paul Mundt
   6  * Copyright (C) 2008  Magnus Damm
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/irq.h>
  14 #include <linux/io.h>
  15 #include <asm/r7780rp.h>
  16
  17 enum {
  18         UNUSED = 0,
  19
  20         /* board specific interrupt sources */
  21
  22         AX88796,          /* Ethernet controller */
  23         PSW,              /* Push Switch */
  24         CF,               /* Compact Flash */
  25
  26         PCI_A,
  27         PCI_B,
  28         PCI_C,
  29         PCI_D,
  30 };
  31
  32 static struct intc_vect vectors[] __initdata = {
  33         INTC_IRQ(PCI_A, 65), /* dirty: overwrite cpu vectors for pci */
  34         INTC_IRQ(PCI_B, 66),
  35         INTC_IRQ(PCI_C, 67),
  36         INTC_IRQ(PCI_D, 68),
  37         INTC_IRQ(CF, IRQ_CF),
  38         INTC_IRQ(PSW, IRQ_PSW),
  39         INTC_IRQ(AX88796, IRQ_AX88796),
  40 };
  41
  42 static struct intc_mask_reg mask_registers[] __initdata = {
  43         { 0xa5000000, 0, 16, /* IRLMSK */
  44           { PCI_A, PCI_B, PCI_C, PCI_D, CF, 0, 0, 0,
  45             0, 0, 0, 0, 0, 0, PSW, AX88796 } },
  46 };
  47
  48 static unsigned char irl2irq[HL_NR_IRL] __initdata = {
  49         65, 66, 67, 68,
  50         IRQ_CF, 0, 0, 0,
  51         0, 0, 0, 0,
  52         IRQ_AX88796, IRQ_PSW
  53 };
  54
  55 static DECLARE_INTC_DESC(intc_desc, "r7780rp", vectors,
  56                          NULL, mask_registers, NULL, NULL);
  57
  58 unsigned char * __init highlander_init_irq_r7780rp(void)
  59 {
  60         if (ctrl_inw(0xa5000600)) {
  61                 printk(KERN_INFO "Using r7780rp interrupt controller.\n");
  62                 register_intc_controller(&intc_desc);
  63                 return irl2irq;
  64         }
  65
  66         return NULL;
  67 }