/*
- * $Id$
- *
* Platform driver for NOR flash devices on ADM5120 based boards
*
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
*
* This file was derived from: drivers/mtd/map/physmap.c
* Copyright (C) 2003 MontaVista Software Inc.
* Author: Jun Sun, jsun@mvista.com or jsun@junsun.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 Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * 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/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/io.h>
#include <linux/device.h>
-
#include <linux/platform_device.h>
+
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
-#include <asm/io.h>
-
#include <asm/mach-adm5120/adm5120_defs.h>
#include <asm/mach-adm5120/adm5120_switch.h>
#include <asm/mach-adm5120/adm5120_mpmc.h>
struct adm5120_map_info {
struct map_info map;
- void (*switch_bank)(unsigned);
+ void (*switch_bank)(unsigned);
unsigned long window_size;
};
struct flash_desc {
u32 phys;
u32 srs_shift;
- u32 mpmc_reg;
};
/*
static struct flash_desc flash_descs[2] = {
{
.phys = ADM5120_SRAM0_BASE,
- .mpmc_reg = MPMC_REG_SC1,
.srs_shift = MEMCTRL_SRS0_SHIFT,
}, {
.phys = ADM5120_SRAM1_BASE,
- .mpmc_reg = MPMC_REG_SC0,
.srs_shift = MEMCTRL_SRS1_SHIFT,
}
};
-static const char *probe_types[] = {
+static const char const *probe_types[] = {
"cfi_probe",
"jedec_probe",
"map_rom",
};
#ifdef CONFIG_MTD_PARTITIONS
-static const char *parse_types[] = {
+static const char const *parse_types[] = {
"cmdlinepart",
#ifdef CONFIG_MTD_REDBOOT_PARTS
"RedBoot",
{
struct adm5120_map_info *amap = map_to_amap(map);
- MAP_DBG(map,"writing to ofs %lX\n", ofs);
+ MAP_DBG(map, "writing to ofs %lX\n", ofs);
if (ofs > amap->window_size)
return;
struct map_info *map = &info->amap.map;
int err = 0;
- info->res = request_mem_region(map->phys, map->size, map->name);
+ info->res = request_mem_region(map->phys, info->amap.window_size,
+ map->name);
if (info->res == NULL) {
MAP_ERR(map, "could not reserve memory region\n");
err = -ENOMEM;
goto out;
}
- map->virt = ioremap_nocache(map->phys, map->size);
+ map->virt = ioremap_nocache(map->phys, info->amap.window_size);
if (map->virt == NULL) {
MAP_ERR(map, "failed to ioremap flash region\n");
err = -ENOMEM;
return err;
}
-#define SWITCH_READ(r) *(u32 *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+(r))
-#define SWITCH_WRITE(r,v) *(u32 *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+(r))=(v)
-#define MPMC_READ(r) *(u32 *)(KSEG1ADDR(ADM5120_MPMC_BASE)+(r))
-#define MPMC_WRITE(r,v) *(u32 *)(KSEG1ADDR(ADM5120_MPMC_BASE)+(r))=(v)
-
static int adm5120_flash_initinfo(struct adm5120_flash_info *info,
struct platform_device *dev)
{
struct map_info *map = &info->amap.map;
struct adm5120_flash_platform_data *pdata = dev->dev.platform_data;
struct flash_desc *fdesc;
- u32 t;
+ u32 t = 0;
- map->name = dev->dev.bus_id;
+ map->name = dev_name(&dev->dev);
if (dev->id > 1) {
MAP_ERR(map, "invalid flash id\n");
fdesc = &flash_descs[dev->id];
- /* get memory window size */
- t = SWITCH_READ(SWITCH_REG_MEMCTRL) >> fdesc->srs_shift;
- t &= MEMCTRL_SRS_MASK;
- info->amap.window_size = flash_sizes[t];
+ if (pdata)
+ info->amap.window_size = pdata->window_size;
+
+ if (info->amap.window_size == 0) {
+ /* get memory window size */
+ t = SW_READ_REG(SWITCH_REG_MEMCTRL) >> fdesc->srs_shift;
+ t &= MEMCTRL_SRS_MASK;
+ info->amap.window_size = flash_sizes[t];
+ }
+
if (info->amap.window_size == 0) {
- MAP_ERR(map, "invalid flash size detected\n");
+ MAP_ERR(map, "unable to determine window size\n");
goto err_out;
}
/* get flash bus width */
- t = MPMC_READ(fdesc->mpmc_reg) & SC_MW_MASK;
+ switch (dev->id) {
+ case 0:
+ t = MPMC_READ_REG(SC1) & SC_MW_MASK;
+ break;
+ case 1:
+ t = MPMC_READ_REG(SC0) & SC_MW_MASK;
+ break;
+ }
map->bankwidth = flash_bankwidths[t];
if (map->bankwidth == 0) {
MAP_ERR(map, "invalid bus width detected\n");
#ifdef CONFIG_MTD_PARTITIONS
static int adm5120_flash_initparts(struct adm5120_flash_info *info)
{
- struct adm5120_flash_platform_data *pdata = info->dev->dev.platform_data;
+ struct adm5120_flash_platform_data *pdata;
struct map_info *map = &info->amap.map;
int num_parsers;
const char *parser[2];
info->nr_parts = 0;
+ pdata = info->dev->dev.platform_data;
if (pdata == NULL)
goto out;
num_parsers = MAX_PARSED_PARTS;
parser[1] = NULL;
- for (i=0; i<num_parsers; i++) {
+ for (i = 0; i < num_parsers; i++) {
parser[0] = parse_types[i];
MAP_INFO(map, "parsing \"%s\" partitions\n",
if (info->nr_parts) {
del_mtd_partitions(info->mtd);
- for (i=0; i<MAX_PARSED_PARTS; i++)
+ for (i = 0; i < MAX_PARSED_PARTS; i++)
if (info->parts[i] != NULL)
kfree(info->parts[i]);
} else {
goto err_out;
if (info->nr_parts == 0) {
- MAP_INFO(map, "no partitions available, registering whole flash\n");
+ MAP_INFO(map, "no partitions available, registering "
+ "whole flash\n");
add_mtd_device(info->mtd);
}
}
#ifdef CONFIG_PM
-static int adm5120_flash_suspend(struct platform_device *dev, pm_message_t state)
+static int adm5120_flash_suspend(struct platform_device *dev,
+ pm_message_t state)
{
struct adm5120_flash_info *info = platform_get_drvdata(dev);
int ret = 0;
module_init(adm5120_flash_init);
module_exit(adm5120_flash_exit);
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
MODULE_DESCRIPTION(DRV_DESC);
projects / openwrt.git / blobdiff