setup.c

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/*
 *  linux/arch/m32r/platforms/m32104ut/setup.c
 *
 *  Setup routines for M32104UT Board
 *
 *  Copyright (c) 2002-2005  Hiroyuki Kondo, Hirokazu Takata,
 *                           Hitoshi Yamamoto, Mamoru Sakugawa,
 *                           Naoto Sugai, Hayato Fujiwara
 */

#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>

#include <asm/m32r.h>
#include <asm/io.h>

#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))

icu_data_t icu_data[NR_IRQS];

static void disable_m32104ut_irq(unsigned int irq)
{
    unsigned long port, data;

    port = irq2port(irq);
    data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
    outl(data, port);
}

static void enable_m32104ut_irq(unsigned int irq)
{
    unsigned long port, data;

    port = irq2port(irq);
    data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
    outl(data, port);
}

static void mask_m32104ut_irq(struct irq_data *data)
{
    disable_m32104ut_irq(data->irq);
}

static void unmask_m32104ut_irq(struct irq_data *data)
{
    enable_m32104ut_irq(data->irq);
}

static void shutdown_m32104ut_irq(struct irq_data *data)
{
    unsigned int irq = data->irq;
    unsigned long port = irq2port(irq);

    outl(M32R_ICUCR_ILEVEL7, port);
}

static struct irq_chip m32104ut_irq_type =
{
    .name       = "M32104UT-IRQ",
    .irq_shutdown   = shutdown_m32104ut_irq,
    .irq_unmask = unmask_m32104ut_irq,
    .irq_mask   = mask_m32104ut_irq,
};

void __init init_IRQ(void)
{
    static int once = 0;

    if (once)
        return;
    else
        once++;

#if defined(CONFIG_SMC91X)
    /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
    irq_set_chip_and_handler(M32R_IRQ_INT0, &m32104ut_irq_type,
                 handle_level_irq);
    /* "H" level sense */
    cu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11;
    disable_m32104ut_irq(M32R_IRQ_INT0);
#endif  /* CONFIG_SMC91X */

    /* MFT2 : system timer */
    irq_set_chip_and_handler(M32R_IRQ_MFT2, &m32104ut_irq_type,
                 handle_level_irq);
    icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
    disable_m32104ut_irq(M32R_IRQ_MFT2);

#ifdef CONFIG_SERIAL_M32R_SIO
    /* SIO0_R : uart receive data */
    irq_set_chip_and_handler(M32R_IRQ_SIO0_R, &m32104ut_irq_type,
                 handle_level_irq);
    icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
    disable_m32104ut_irq(M32R_IRQ_SIO0_R);

    /* SIO0_S : uart send data */
    irq_set_chip_and_handler(M32R_IRQ_SIO0_S, &m32104ut_irq_type,
                 handle_level_irq);
    icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
    disable_m32104ut_irq(M32R_IRQ_SIO0_S);
#endif /* CONFIG_SERIAL_M32R_SIO */
}

#if defined(CONFIG_SMC91X)

#define LAN_IOSTART     0x300
#define LAN_IOEND       0x320
static struct resource smc91x_resources[] = {
    [0] = {
        .start  = (LAN_IOSTART),
        .end    = (LAN_IOEND),
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = M32R_IRQ_INT0,
        .end    = M32R_IRQ_INT0,
        .flags  = IORESOURCE_IRQ,
    }
};

static struct platform_device smc91x_device = {
    .name       = "smc91x",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource       = smc91x_resources,
};
#endif

static int __init platform_init(void)
{
#if defined(CONFIG_SMC91X)
    platform_device_register(&smc91x_device);
#endif
    return 0;
}
arch_initcall(platform_init);