// SPDX-License-Identifier: GPL-2.0
/*
 * Renesas Solutions Highlander R7780RP-1 Support.
 *
 * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
 * Copyright (C) 2006  Paul Mundt
 * Copyright (C) 2008  Magnus Damm
 */
#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;
}