// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/if_ether.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.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 u64 sgiwd93_0_dma_mask = DMA_BIT_MASK(32);

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,
                .dma_mask = &sgiwd93_0_dma_mask,
                .coherent_dma_mask = DMA_BIT_MASK(32),
        },
};

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 u64 sgiwd93_1_dma_mask = DMA_BIT_MASK(32);

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,
                .dma_mask = &sgiwd93_1_dma_mask,
                .coherent_dma_mask = DMA_BIT_MASK(32),
        },
};

/*
 * 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 u64 sgiseeq_dma_mask = DMA_BIT_MASK(32);

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,
                .dma_mask = &sgiseeq_dma_mask,
                .coherent_dma_mask = DMA_BIT_MASK(32),
        },
};

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);