LXR linux/arch/sh/boards/mach-highlander/irq-r7780mp.c

   1/*
   2 * Renesas Solutions Highlander R7780MP Support.
   3 *
   4 * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
   5 * Copyright (C) 2006  Paul Mundt
   6 * Copyright (C) 2007  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 <mach/highlander.h>
  16
  17enum {
  18        UNUSED = 0,
  19
  20        /* board specific interrupt sources */
  21        CF,             /* Compact Flash */
  22        TP,             /* Touch panel */
  23        SCIF1,          /* FPGA SCIF1 */
  24        SCIF0,          /* FPGA SCIF0 */
  25        SMBUS,          /* SMBUS */
  26        RTC,            /* RTC Alarm */
  27        AX88796,        /* Ethernet controller */
  28        PSW,            /* Push Switch */
  29
  30        /* external bus connector */
  31        EXT1, EXT2, EXT4, EXT5, EXT6,
  32};
  33
  34static struct intc_vect vectors[] __initdata = {
  35        INTC_IRQ(CF, IRQ_CF),
  36        INTC_IRQ(TP, IRQ_TP),
  37        INTC_IRQ(SCIF1, IRQ_SCIF1),
  38        INTC_IRQ(SCIF0, IRQ_SCIF0),
  39        INTC_IRQ(SMBUS, IRQ_SMBUS),
  40        INTC_IRQ(RTC, IRQ_RTC),
  41        INTC_IRQ(AX88796, IRQ_AX88796),
  42        INTC_IRQ(PSW, IRQ_PSW),
  43
  44        INTC_IRQ(EXT1, IRQ_EXT1), INTC_IRQ(EXT2, IRQ_EXT2),
  45        INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
  46        INTC_IRQ(EXT6, IRQ_EXT6),
  47};
  48
  49static struct intc_mask_reg mask_registers[] __initdata = {
  50        { 0xa4000000, 0, 16, /* IRLMSK */
  51          { SCIF0, SCIF1, RTC, 0, CF, 0, TP, SMBUS,
  52            0, EXT6, EXT5, EXT4, EXT2, EXT1, PSW, AX88796 } },
  53};
  54
  55static unsigned char irl2irq[HL_NR_IRL] __initdata = {
  56        0, IRQ_CF, IRQ_TP, IRQ_SCIF1,
  57        IRQ_SCIF0, IRQ_SMBUS, IRQ_RTC, IRQ_EXT6,
  58        IRQ_EXT5, IRQ_EXT4, IRQ_EXT2, IRQ_EXT1,
  59        0, IRQ_AX88796, IRQ_PSW,
  60};
  61
  62static DECLARE_INTC_DESC(intc_desc, "r7780mp", vectors,
  63                         NULL, mask_registers, NULL, NULL);
  64
  65unsigned char * __init highlander_plat_irq_setup(void)
  66{
  67        if ((__raw_readw(0xa4000700) & 0xf000) == 0x2000) {
  68                printk(KERN_INFO "Using r7780mp interrupt controller.\n");
  69                register_intc_controller(&intc_desc);
  70                return irl2irq;
  71        }
  72
  73        return NULL;
  74}
  75