ip22-platform.c

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#include <linux/init.h>
#include <linux/if_ether.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>

#include <asm/paccess.h>
#include <asm/sgi/ip22.h>
#include <asm/sgi/hpc3.h>
#include <asm/sgi/mc.h>
#include <asm/sgi/seeq.h>
#include <asm/sgi/wd.h>

static struct resource sgiwd93_0_resources[] = {
    {
        .name   = "eth0 irq",
        .start  = SGI_WD93_0_IRQ,
        .end    = SGI_WD93_0_IRQ,
        .flags  = IORESOURCE_IRQ
    }
};

static struct sgiwd93_platform_data sgiwd93_0_pd = {
    .unit   = 0,
    .irq    = SGI_WD93_0_IRQ,
};

static struct platform_device sgiwd93_0_device = {
    .name       = "sgiwd93",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(sgiwd93_0_resources),
    .resource   = sgiwd93_0_resources,
    .dev = {
        .platform_data = &sgiwd93_0_pd,
    },
};

static struct resource sgiwd93_1_resources[] = {
    {
        .name   = "eth0 irq",
        .start  = SGI_WD93_1_IRQ,
        .end    = SGI_WD93_1_IRQ,
        .flags  = IORESOURCE_IRQ
    }
};

static struct sgiwd93_platform_data sgiwd93_1_pd = {
    .unit   = 1,
    .irq    = SGI_WD93_1_IRQ,
};

static struct platform_device sgiwd93_1_device = {
    .name       = "sgiwd93",
    .id     = 1,
    .num_resources  = ARRAY_SIZE(sgiwd93_1_resources),
    .resource   = sgiwd93_1_resources,
    .dev = {
        .platform_data = &sgiwd93_1_pd,
    },
};

/*
 * Create a platform device for the GPI port that receives the
 * image data from the embedded camera.
 */
static int __init sgiwd93_devinit(void)
{
    int res;

    sgiwd93_0_pd.hregs  = &hpc3c0->scsi_chan0;
    sgiwd93_0_pd.wdregs = (unsigned char *) hpc3c0->scsi0_ext;

    res = platform_device_register(&sgiwd93_0_device);
    if (res)
        return res;

    if (!ip22_is_fullhouse())
        return 0;

    sgiwd93_1_pd.hregs  = &hpc3c0->scsi_chan1;
    sgiwd93_1_pd.wdregs = (unsigned char *) hpc3c0->scsi1_ext;

    return platform_device_register(&sgiwd93_1_device);
}

device_initcall(sgiwd93_devinit);

static struct resource sgiseeq_0_resources[] = {
    {
        .name   = "eth0 irq",
        .start  = SGI_ENET_IRQ,
        .end    = SGI_ENET_IRQ,
        .flags  = IORESOURCE_IRQ
    }
};

static struct sgiseeq_platform_data eth0_pd;

static struct platform_device eth0_device = {
    .name       = "sgiseeq",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(sgiseeq_0_resources),
    .resource   = sgiseeq_0_resources,
    .dev = {
        .platform_data = &eth0_pd,
    },
};

static struct resource sgiseeq_1_resources[] = {
    {
        .name   = "eth1 irq",
        .start  = SGI_GIO_0_IRQ,
        .end    = SGI_GIO_0_IRQ,
        .flags  = IORESOURCE_IRQ
    }
};

static struct sgiseeq_platform_data eth1_pd;

static struct platform_device eth1_device = {
    .name       = "sgiseeq",
    .id     = 1,
    .num_resources  = ARRAY_SIZE(sgiseeq_1_resources),
    .resource   = sgiseeq_1_resources,
    .dev = {
        .platform_data = &eth1_pd,
    },
};

/*
 * Create a platform device for the GPI port that receives the
 * image data from the embedded camera.
 */
static int __init sgiseeq_devinit(void)
{
    unsigned int pbdma __maybe_unused;
    int res, i;

    eth0_pd.hpc = hpc3c0;
    eth0_pd.irq = SGI_ENET_IRQ;
#define EADDR_NVOFS     250
    for (i = 0; i < 3; i++) {
        unsigned short tmp = ip22_nvram_read(EADDR_NVOFS / 2 + i);

        eth0_pd.mac[2 * i]     = tmp >> 8;
        eth0_pd.mac[2 * i + 1] = tmp & 0xff;
    }

    res = platform_device_register(&eth0_device);
    if (res)
        return res;

    /* Second HPC is missing? */
    if (ip22_is_fullhouse() ||
        get_dbe(pbdma, (unsigned int *)&hpc3c1->pbdma[1]))
        return 0;

    sgimc->giopar |= SGIMC_GIOPAR_MASTEREXP1 | SGIMC_GIOPAR_EXP164 |
                     SGIMC_GIOPAR_HPC264;
    hpc3c1->pbus_piocfg[0][0] = 0x3ffff;
    /* interrupt/config register on Challenge S Mezz board */
    hpc3c1->pbus_extregs[0][0] = 0x30;

    eth1_pd.hpc = hpc3c1;
    eth1_pd.irq = SGI_GIO_0_IRQ;
#define EADDR_NVOFS     250
    for (i = 0; i < 3; i++) {
        unsigned short tmp = ip22_eeprom_read(&hpc3c1->eeprom,
                                              EADDR_NVOFS / 2 + i);

        eth1_pd.mac[2 * i]     = tmp >> 8;
        eth1_pd.mac[2 * i + 1] = tmp & 0xff;
    }

    return platform_device_register(&eth1_device);
}

device_initcall(sgiseeq_devinit);

static int __init sgi_hal2_devinit(void)
{
    return IS_ERR(platform_device_register_simple("sgihal2", 0, NULL, 0));
}

device_initcall(sgi_hal2_devinit);

static int __init sgi_button_devinit(void)
{
    if (ip22_is_fullhouse())
        return 0; /* full house has no volume buttons */

    return IS_ERR(platform_device_register_simple("sgibtns", -1, NULL, 0));
}

device_initcall(sgi_button_devinit);

static int __init sgi_ds1286_devinit(void)
{
    struct resource res;

    memset(&res, 0, sizeof(res));
    res.start = HPC3_CHIP0_BASE + offsetof(struct hpc3_regs, rtcregs);
    res.end = res.start + sizeof(hpc3c0->rtcregs) - 1;
    res.flags = IORESOURCE_MEM;

    return IS_ERR(platform_device_register_simple("rtc-ds1286", -1,
                              &res, 1));
}

device_initcall(sgi_ds1286_devinit);