linux-imx

/*

 * Broadcom specific AMBA

 * ChipCommon NAND flash interface

 *

 * Licensed under the GNU/GPL. See COPYING for details.

 */

​

#include "bcma_private.h"

​

#include <linux/platform_device.h>

#include <linux/bcma/bcma.h>

​

struct platform_device bcma_nflash_dev = {

    .name       = "bcma_nflash",

    .num_resources  = 0,

};

​

/* Initialize NAND flash access */

int bcma_nflash_init(struct bcma_drv_cc *cc)

{

    struct bcma_bus *bus = cc->core->bus;

​

    if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4706 &&

        cc->core->id.rev != 38) {

        bcma_err(bus, "NAND flash on unsupported board!\n");

        return -ENOTSUPP;

    }

​

    if (!(cc->capabilities & BCMA_CC_CAP_NFLASH)) {

        bcma_err(bus, "NAND flash not present according to ChipCommon\n");

        return -ENODEV;

    }

​

    cc->nflash.present = true;

    if (cc->core->id.rev == 38 &&

        (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT))

        cc->nflash.boot = true;

​

    /* Prepare platform device, but don't register it yet. It's too early,

     * malloc (required by device_private_init) is not available yet. */

    bcma_nflash_dev.dev.platform_data = &cc->nflash;

​

    return 0;

}