parent
43a86a8863
commit
6b545cff1d
@ -1,207 +0,0 @@ |
|||||||
/*==============================================================================*/ |
|
||||||
/* rbmipsnand.c */ |
|
||||||
/* This module is derived from the 2.4 driver shipped by Microtik for their */ |
|
||||||
/* Routerboard 1xx and 5xx series boards. It provides support for the built in */ |
|
||||||
/* NAND flash on the Routerboard 1xx series boards for Linux 2.6.19+. */ |
|
||||||
/* Licence: Original Microtik code seems not to have a licence. */ |
|
||||||
/* Rewritten code all GPL V2. */ |
|
||||||
/* Copyright(C) 2007 david.goodenough@linkchoose.co.uk (for rewriten code) */ |
|
||||||
/*==============================================================================*/ |
|
||||||
|
|
||||||
#include <linux/io.h> |
|
||||||
#include <linux/module.h> |
|
||||||
#include <linux/platform_device.h> |
|
||||||
#include <linux/mtd/nand.h> |
|
||||||
#include <linux/mtd/mtd.h> |
|
||||||
#include <linux/mtd/partitions.h> |
|
||||||
#include <linux/delay.h> |
|
||||||
|
|
||||||
#include <asm/io.h> |
|
||||||
#include <asm/irq.h> |
|
||||||
#include <asm/bootinfo.h> |
|
||||||
#include <asm/mach-adm5120/adm5120_info.h> |
|
||||||
#include <asm/mach-adm5120/adm5120_defs.h> |
|
||||||
|
|
||||||
#define SMEM1(x) (*((volatile unsigned char *) (KSEG1ADDR(ADM5120_SRAM1_BASE) + x))) |
|
||||||
|
|
||||||
#define NAND_RW_REG 0x0 //data register
|
|
||||||
#define NAND_SET_CEn 0x1 //CE# low
|
|
||||||
#define NAND_CLR_CEn 0x2 //CE# high
|
|
||||||
#define NAND_CLR_CLE 0x3 //CLE low
|
|
||||||
#define NAND_SET_CLE 0x4 //CLE high
|
|
||||||
#define NAND_CLR_ALE 0x5 //ALE low
|
|
||||||
#define NAND_SET_ALE 0x6 //ALE high
|
|
||||||
#define NAND_SET_SPn 0x7 //SP# low (use spare area)
|
|
||||||
#define NAND_CLR_SPn 0x8 //SP# high (do not use spare area)
|
|
||||||
#define NAND_SET_WPn 0x9 //WP# low
|
|
||||||
#define NAND_CLR_WPn 0xA //WP# high
|
|
||||||
#define NAND_STS_REG 0xB //Status register
|
|
||||||
|
|
||||||
#define MEM32(x) *((volatile unsigned *) (x)) |
|
||||||
|
|
||||||
static struct mtd_partition partition_info[] = { |
|
||||||
{ |
|
||||||
name: "RouterBoard NAND Boot", |
|
||||||
offset: 0, |
|
||||||
size: 4 * 1024 * 1024 |
|
||||||
}, |
|
||||||
{ |
|
||||||
name: "rootfs", |
|
||||||
offset: MTDPART_OFS_NXTBLK, |
|
||||||
size: MTDPART_SIZ_FULL |
|
||||||
} |
|
||||||
}; |
|
||||||
|
|
||||||
static struct nand_ecclayout rb_ecclayout = { |
|
||||||
.eccbytes = 6, |
|
||||||
.eccpos = { 8, 9, 10, 13, 14, 15 }, |
|
||||||
.oobavail = 9, |
|
||||||
.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1} } |
|
||||||
}; |
|
||||||
|
|
||||||
struct adm5120_nand_info { |
|
||||||
struct nand_chip chip; |
|
||||||
struct mtd_info mtd; |
|
||||||
void __iomem *io_base; |
|
||||||
#ifdef CONFIG_MTD_PARTITIONS |
|
||||||
int nr_parts; |
|
||||||
struct mtd_partition *parts; |
|
||||||
#endif |
|
||||||
unsigned int init_ok; |
|
||||||
}; |
|
||||||
|
|
||||||
static int rb100_dev_ready(struct mtd_info *mtd) |
|
||||||
{ |
|
||||||
return SMEM1(NAND_STS_REG) & 0x80; |
|
||||||
} |
|
||||||
|
|
||||||
static void rbmips_hwcontrol100(struct mtd_info *mtd, int cmd, unsigned int ctrl) |
|
||||||
{ |
|
||||||
struct nand_chip *chip = mtd->priv; |
|
||||||
if (ctrl & NAND_CTRL_CHANGE) |
|
||||||
{ |
|
||||||
SMEM1((( ctrl & NAND_CLE) ? NAND_SET_CLE : NAND_CLR_CLE)) = 0x01; |
|
||||||
SMEM1((( ctrl & NAND_ALE) ? NAND_SET_ALE : NAND_CLR_ALE)) = 0x01; |
|
||||||
SMEM1((( ctrl & NAND_NCE) ? NAND_SET_CEn : NAND_CLR_CEn)) = 0x01; |
|
||||||
} |
|
||||||
if (cmd != NAND_CMD_NONE) |
|
||||||
writeb( cmd, chip->IO_ADDR_W); |
|
||||||
} |
|
||||||
|
|
||||||
/*========================================================================*/ |
|
||||||
/* We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader */ |
|
||||||
/* will not be able to find the kernel that we load. So set the oobinfo */ |
|
||||||
/* when creating the partitions. */
|
|
||||||
/*========================================================================*/ |
|
||||||
|
|
||||||
|
|
||||||
unsigned get_rbnand_block_size(struct adm5120_nand_info *data) |
|
||||||
{ |
|
||||||
return data->init_ok ? data->mtd.writesize : 0; |
|
||||||
} |
|
||||||
|
|
||||||
EXPORT_SYMBOL(get_rbnand_block_size); |
|
||||||
|
|
||||||
static int rbmips_probe(struct platform_device *pdev) |
|
||||||
{ |
|
||||||
struct adm5120_nand_info *data; |
|
||||||
int res = 0; |
|
||||||
|
|
||||||
/* Allocate memory for the nand_chip structure */ |
|
||||||
data = kzalloc(sizeof(*data), GFP_KERNEL); |
|
||||||
if (!data) { |
|
||||||
dev_err(&pdev->dev, "Failed to allocate device structure\n"); |
|
||||||
return -ENOMEM; |
|
||||||
|
|
||||||
} |
|
||||||
|
|
||||||
data->io_base = ioremap(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start + 1); |
|
||||||
|
|
||||||
if (data->io_base == NULL) { |
|
||||||
dev_err(&pdev->dev, "ioremap failed\n"); |
|
||||||
kfree(data); |
|
||||||
return -EIO; |
|
||||||
} |
|
||||||
|
|
||||||
MEM32(0xB2000064) = 0x100; |
|
||||||
MEM32(0xB2000008) = 0x1; |
|
||||||
SMEM1(NAND_SET_SPn) = 0x01; |
|
||||||
SMEM1(NAND_CLR_WPn) = 0x01; |
|
||||||
|
|
||||||
data->chip.priv = &data; |
|
||||||
data->mtd.priv = &data->chip; |
|
||||||
data->mtd.owner = THIS_MODULE; |
|
||||||
|
|
||||||
data->init_ok = 0; |
|
||||||
data->chip.IO_ADDR_R = (unsigned char *)KSEG1ADDR(ADM5120_SRAM1_BASE); |
|
||||||
data->chip.IO_ADDR_W = data->chip.IO_ADDR_R; |
|
||||||
data->chip.cmd_ctrl = rbmips_hwcontrol100; |
|
||||||
data->chip.dev_ready = rb100_dev_ready; |
|
||||||
data->chip.ecc.mode = NAND_ECC_SOFT; |
|
||||||
data->chip.ecc.layout = &rb_ecclayout; |
|
||||||
data->chip.chip_delay = 25; |
|
||||||
data->chip.options |= NAND_NO_AUTOINCR; |
|
||||||
|
|
||||||
platform_set_drvdata(pdev, data); |
|
||||||
|
|
||||||
/* Why do we need to scan 4 times ? */ |
|
||||||
if (nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1)) { |
|
||||||
printk(KERN_INFO "RB1xxx nand device not found\n"); |
|
||||||
res = -ENXIO; |
|
||||||
goto out; |
|
||||||
} |
|
||||||
|
|
||||||
add_mtd_partitions(&data->mtd, partition_info, 2); |
|
||||||
data->init_ok = 1; |
|
||||||
|
|
||||||
res = add_mtd_device(&data->mtd); |
|
||||||
if (!res) |
|
||||||
return res; |
|
||||||
|
|
||||||
nand_release(&data->mtd); |
|
||||||
out: |
|
||||||
platform_set_drvdata(pdev, NULL); |
|
||||||
iounmap(data->io_base); |
|
||||||
kfree(data); |
|
||||||
return res; |
|
||||||
} |
|
||||||
|
|
||||||
static int __devexit rbmips_remove(struct platform_device *pdev) |
|
||||||
{ |
|
||||||
struct adm5120_nand_info *data = platform_get_drvdata(pdev); |
|
||||||
|
|
||||||
nand_release(&data->mtd); |
|
||||||
iounmap(data->io_base); |
|
||||||
kfree(data); |
|
||||||
|
|
||||||
return 0; |
|
||||||
} |
|
||||||
|
|
||||||
static struct platform_driver adm5120_nand_driver = { |
|
||||||
.probe = rbmips_probe, |
|
||||||
.remove = rbmips_remove, |
|
||||||
.driver = { |
|
||||||
.name = "adm5120-nand", |
|
||||||
.owner = THIS_MODULE, |
|
||||||
}, |
|
||||||
}; |
|
||||||
|
|
||||||
static int __init adm5120_nand_init(void) |
|
||||||
{ |
|
||||||
int err; |
|
||||||
err = platform_driver_register(&adm5120_nand_driver); |
|
||||||
return err; |
|
||||||
} |
|
||||||
|
|
||||||
static void __exit adm5120_nand_exit(void) |
|
||||||
{ |
|
||||||
platform_driver_unregister(&adm5120_nand_driver); |
|
||||||
} |
|
||||||
|
|
||||||
module_init(adm5120_nand_init); |
|
||||||
module_exit(adm5120_nand_exit); |
|
||||||
|
|
||||||
MODULE_LICENSE("GPL"); |
|
||||||
MODULE_AUTHOR("David Goodenough, Florian Fainelli"); |
|
||||||
MODULE_DESCRIPTION("RouterBOARD 100 NAND driver"); |
|
||||||
|
|
@ -1,37 +0,0 @@ |
|||||||
/*
|
|
||||||
* $Id$ |
|
||||||
* |
|
||||||
* GPIO LEDs platform data structure |
|
||||||
* |
|
||||||
* Copyright (C) 2007 OpenWrt.org |
|
||||||
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org> |
|
||||||
* |
|
||||||
* 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 Street, Fifth Floor, |
|
||||||
* Boston, MA 02110-1301, USA. |
|
||||||
* |
|
||||||
*/ |
|
||||||
|
|
||||||
#ifndef _GPIO_LEDS_H_ |
|
||||||
#define _GPIO_LEDS_H_ |
|
||||||
|
|
||||||
struct gpio_led_platform_data { |
|
||||||
char *name; |
|
||||||
char *trigger; |
|
||||||
unsigned gpio; /* GPIO line number */ |
|
||||||
int value_off; /* value to turn LED OFF */ |
|
||||||
int value_on; /* value to turn LED ON */ |
|
||||||
}; |
|
||||||
|
|
||||||
#endif /* _GPIO_LEDS_H__ */ |
|
Loading…
Reference in new issue