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/*
* BCM47XX NAND flash driver
*
* Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/bcma/bcma.h>
#include "bcm47xxnflash.h"
MODULE_DESCRIPTION("NAND flash driver for BCMA bus");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Rafał Miłecki");
static const char *probes[] = { "bcm47xxpart", NULL };
static int bcm47xxnflash_probe(struct platform_device *pdev)
{
struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
struct bcm47xxnflash *b47n;
int err = 0;
b47n = kzalloc(sizeof(*b47n), GFP_KERNEL);
if (!b47n) {
err = -ENOMEM;
goto out;
}
b47n->nand_chip.priv = b47n;
b47n->mtd.owner = THIS_MODULE;
b47n->mtd.priv = &b47n->nand_chip; /* Required */
b47n->cc = container_of(nflash, struct bcma_drv_cc, nflash);
if (b47n->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
err = bcm47xxnflash_ops_bcm4706_init(b47n);
} else {
pr_err("Device not supported\n");
err = -ENOTSUPP;
}
if (err) {
pr_err("Initialization failed: %d\n", err);
goto err_init;
}
err = mtd_device_parse_register(&b47n->mtd, probes, NULL, NULL, 0);
if (err) {
pr_err("Failed to register MTD device: %d\n", err);
goto err_dev_reg;
}
return 0;
err_dev_reg:
err_init:
kfree(b47n);
out:
return err;
}
static int bcm47xxnflash_remove(struct platform_device *pdev)
{
struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
if (nflash->mtd)
mtd_device_unregister(nflash->mtd);
return 0;
}
static struct platform_driver bcm47xxnflash_driver = {
.remove = bcm47xxnflash_remove,
.driver = {
.name = "bcma_nflash",
.owner = THIS_MODULE,
},
};
static int __init bcm47xxnflash_init(void)
{
int err;
/*
* Platform device "bcma_nflash" exists on SoCs and is registered very
* early, it won't be added during runtime (use platform_driver_probe).
*/
err = platform_driver_probe(&bcm47xxnflash_driver, bcm47xxnflash_probe);
if (err)
pr_err("Failed to register bcm47xx nand flash driver: %d\n",
err);
return err;
}
static void __exit bcm47xxnflash_exit(void)
{
platform_driver_unregister(&bcm47xxnflash_driver);
}
module_init(bcm47xxnflash_init);
module_exit(bcm47xxnflash_exit);
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