irq-r7780mp.c

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/*
 * Renesas Solutions Highlander R7780MP Support.
 *
 * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
 * Copyright (C) 2006  Paul Mundt
 * Copyright (C) 2007  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 */
    CF,     /* Compact Flash */
    TP,     /* Touch panel */
    SCIF1,      /* FPGA SCIF1 */
    SCIF0,      /* FPGA SCIF0 */
    SMBUS,      /* SMBUS */
    RTC,        /* RTC Alarm */
    AX88796,    /* Ethernet controller */
    PSW,        /* Push Switch */

    /* external bus connector */
    EXT1, EXT2, EXT4, EXT5, EXT6,
};

static struct intc_vect vectors[] __initdata = {
    INTC_IRQ(CF, IRQ_CF),
    INTC_IRQ(TP, IRQ_TP),
    INTC_IRQ(SCIF1, IRQ_SCIF1),
    INTC_IRQ(SCIF0, IRQ_SCIF0),
    INTC_IRQ(SMBUS, IRQ_SMBUS),
    INTC_IRQ(RTC, IRQ_RTC),
    INTC_IRQ(AX88796, IRQ_AX88796),
    INTC_IRQ(PSW, IRQ_PSW),

    INTC_IRQ(EXT1, IRQ_EXT1), INTC_IRQ(EXT2, IRQ_EXT2),
    INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
    INTC_IRQ(EXT6, IRQ_EXT6),
};

static struct intc_mask_reg mask_registers[] __initdata = {
    { 0xa4000000, 0, 16, /* IRLMSK */
      { SCIF0, SCIF1, RTC, 0, CF, 0, TP, SMBUS,
        0, EXT6, EXT5, EXT4, EXT2, EXT1, PSW, AX88796 } },
};

static unsigned char irl2irq[HL_NR_IRL] __initdata = {
    0, IRQ_CF, IRQ_TP, IRQ_SCIF1,
    IRQ_SCIF0, IRQ_SMBUS, IRQ_RTC, IRQ_EXT6,
    IRQ_EXT5, IRQ_EXT4, IRQ_EXT2, IRQ_EXT1,
    0, IRQ_AX88796, IRQ_PSW,
};

static DECLARE_INTC_DESC(intc_desc, "r7780mp", vectors,
             NULL, mask_registers, NULL, NULL);

unsigned char * __init highlander_plat_irq_setup(void)
{
    if ((__raw_readw(0xa4000700) & 0xf000) == 0x2000) {
        printk(KERN_INFO "Using r7780mp interrupt controller.\n");
        register_intc_controller(&intc_desc);
        return irl2irq;
    }

    return NULL;
}