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/*
* Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org>
* Mike Albon <malbon@openwrt.org>
* Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#define BCM63XX_BUSWIDTH 2 /* Buswidth */
static struct mtd_info *bcm963xx_mtd_info;
static struct map_info bcm963xx_map = {
.name = "bcm963xx",
.bankwidth = BCM63XX_BUSWIDTH,
};
static const char *part_types[] = { "bcm63xxpart", NULL };
static int bcm963xx_probe(struct platform_device *pdev)
{
int err = 0;
struct resource *r;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
dev_err(&pdev->dev, "no resource supplied\n");
return -ENODEV;
}
bcm963xx_map.phys = r->start;
bcm963xx_map.size = resource_size(r);
bcm963xx_map.virt = ioremap(r->start, resource_size(r));
if (!bcm963xx_map.virt) {
dev_err(&pdev->dev, "failed to ioremap\n");
return -EIO;
}
dev_info(&pdev->dev, "0x%08lx at 0x%08x\n",
bcm963xx_map.size, bcm963xx_map.phys);
simple_map_init(&bcm963xx_map);
bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
if (!bcm963xx_mtd_info) {
dev_err(&pdev->dev, "failed to probe using CFI\n");
bcm963xx_mtd_info = do_map_probe("jedec_probe", &bcm963xx_map);
if (bcm963xx_mtd_info)
goto probe_ok;
dev_err(&pdev->dev, "failed to probe using JEDEC\n");
err = -EIO;
goto err_probe;
}
probe_ok:
bcm963xx_mtd_info->owner = THIS_MODULE;
return mtd_device_parse_register(bcm963xx_mtd_info, part_types, NULL,
NULL, 0);
err_probe:
iounmap(bcm963xx_map.virt);
return err;
}
static int bcm963xx_remove(struct platform_device *pdev)
{
if (bcm963xx_mtd_info) {
mtd_device_unregister(bcm963xx_mtd_info);
map_destroy(bcm963xx_mtd_info);
}
if (bcm963xx_map.virt) {
iounmap(bcm963xx_map.virt);
bcm963xx_map.virt = 0;
}
return 0;
}
static struct platform_driver bcm63xx_mtd_dev = {
.probe = bcm963xx_probe,
.remove = bcm963xx_remove,
.driver = {
.name = "bcm963xx-flash",
.owner = THIS_MODULE,
},
};
module_platform_driver(bcm63xx_mtd_dev);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Broadcom BCM63xx MTD driver for CFE and RedBoot");
MODULE_AUTHOR("Daniel Dickinson <openwrt@cshore.neomailbox.net>");
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
MODULE_AUTHOR("Mike Albon <malbon@openwrt.org>");
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