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/*
* 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 != 0x38) {
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;
}
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