irq-r7780rp.c

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/*
 * Renesas Solutions Highlander R7780RP-1 Support.
 *
 * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
 * Copyright (C) 2006  Paul Mundt
 * Copyright (C) 2008  Magnus Damm
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <mach/highlander.h>

enum {
    UNUSED = 0,

    /* board specific interrupt sources */

    AX88796,          /* Ethernet controller */
    PSW,              /* Push Switch */
    CF,               /* Compact Flash */

    PCI_A,
    PCI_B,
    PCI_C,
    PCI_D,
};

static struct intc_vect vectors[] __initdata = {
    INTC_IRQ(PCI_A, 65), /* dirty: overwrite cpu vectors for pci */
    INTC_IRQ(PCI_B, 66),
    INTC_IRQ(PCI_C, 67),
    INTC_IRQ(PCI_D, 68),
    INTC_IRQ(CF, IRQ_CF),
    INTC_IRQ(PSW, IRQ_PSW),
    INTC_IRQ(AX88796, IRQ_AX88796),
};

static struct intc_mask_reg mask_registers[] __initdata = {
    { 0xa5000000, 0, 16, /* IRLMSK */
      { PCI_A, PCI_B, PCI_C, PCI_D, CF, 0, 0, 0,
        0, 0, 0, 0, 0, 0, PSW, AX88796 } },
};

static unsigned char irl2irq[HL_NR_IRL] __initdata = {
    65, 66, 67, 68,
    IRQ_CF, 0, 0, 0,
    0, 0, 0, 0,
    IRQ_AX88796, IRQ_PSW
};

static DECLARE_INTC_DESC(intc_desc, "r7780rp", vectors,
             NULL, mask_registers, NULL, NULL);

unsigned char * __init highlander_plat_irq_setup(void)
{
    if (__raw_readw(0xa5000600)) {
        printk(KERN_INFO "Using r7780rp interrupt controller.\n");
        register_intc_controller(&intc_desc);
        return irl2irq;
    }

    return NULL;
}