/*
 * 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.
 *
 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/bootinfo.h>
#include <linux/platform_device.h>
#include <bcm63xx_cs.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_dev_pcmcia.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>

static struct resource pcmcia_resources[] = {
        /* pcmcia registers */
        {
                /* start & end filled at runtime */
                .flags          = IORESOURCE_MEM,
        },

        /* pcmcia memory zone resources */
        {
                .start          = BCM_PCMCIA_COMMON_BASE_PA,
                .end            = BCM_PCMCIA_COMMON_END_PA,
                .flags          = IORESOURCE_MEM,
        },
        {
                .start          = BCM_PCMCIA_ATTR_BASE_PA,
                .end            = BCM_PCMCIA_ATTR_END_PA,
                .flags          = IORESOURCE_MEM,
        },
        {
                .start          = BCM_PCMCIA_IO_BASE_PA,
                .end            = BCM_PCMCIA_IO_END_PA,
                .flags          = IORESOURCE_MEM,
        },

        /* PCMCIA irq */
        {
                /* start filled at runtime */
                .flags          = IORESOURCE_IRQ,
        },

        /* declare PCMCIA IO resource also */
        {
                .start          = BCM_PCMCIA_IO_BASE_PA,
                .end            = BCM_PCMCIA_IO_END_PA,
                .flags          = IORESOURCE_IO,
        },
};

static struct bcm63xx_pcmcia_platform_data pd;

static struct platform_device bcm63xx_pcmcia_device = {
        .name           = "bcm63xx_pcmcia",
        .id             = 0,
        .num_resources  = ARRAY_SIZE(pcmcia_resources),
        .resource       = pcmcia_resources,
        .dev            = {
                .platform_data = &pd,
        },
};

static int __init config_pcmcia_cs(unsigned int cs,
                                   u32 base, unsigned int size)
{
        int ret;

        ret = bcm63xx_set_cs_status(cs, 0);
        if (!ret)
                ret = bcm63xx_set_cs_base(cs, base, size);
        if (!ret)
                ret = bcm63xx_set_cs_status(cs, 1);
        return ret;
}

static const struct {
        unsigned int    cs;
        unsigned int    base;
        unsigned int    size;
} pcmcia_cs[3] __initconst = {
        {
                .cs     = MPI_CS_PCMCIA_COMMON,
                .base   = BCM_PCMCIA_COMMON_BASE_PA,
                .size   = BCM_PCMCIA_COMMON_SIZE
        },
        {
                .cs     = MPI_CS_PCMCIA_ATTR,
                .base   = BCM_PCMCIA_ATTR_BASE_PA,
                .size   = BCM_PCMCIA_ATTR_SIZE
        },
        {
                .cs     = MPI_CS_PCMCIA_IO,
                .base   = BCM_PCMCIA_IO_BASE_PA,
                .size   = BCM_PCMCIA_IO_SIZE
        },
};

int __init bcm63xx_pcmcia_register(void)
{
        int ret, i;

        if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
                return 0;

        /* use correct pcmcia ready gpio depending on processor */
        switch (bcm63xx_get_cpu_id()) {
        case BCM6348_CPU_ID:
                pd.ready_gpio = 22;
                break;

        case BCM6358_CPU_ID:
                pd.ready_gpio = 18;
                break;

        default:
                return -ENODEV;
        }

        pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
        pcmcia_resources[0].end = pcmcia_resources[0].start +
                RSET_PCMCIA_SIZE - 1;
        pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);

        /* configure pcmcia chip selects */
        for (i = 0; i < 3; i++) {
                ret = config_pcmcia_cs(pcmcia_cs[i].cs,
                                       pcmcia_cs[i].base,
                                       pcmcia_cs[i].size);
                if (ret)
                        goto out_err;
        }

        return platform_device_register(&bcm63xx_pcmcia_device);

out_err:
        pr_err("unable to set pcmcia chip select\n");
        return ret;
}