X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/17c7b6c3fdc48301e50d22cc6138ede16bd1be24..28e6c72f660259b28987dd2e1bebec90a4336acd:/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c diff --git a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c index 0a2590e60..8bd7ae1c0 100644 --- a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c +++ b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c @@ -1,29 +1,15 @@ /* - * $Id$ - * * Platform driver for NOR flash devices on ADM5120 based boards * - * Copyright (C) 2007 OpenWrt.org - * Copyright (C) 2007 Gabor Juhos + * Copyright (C) 2007-2008 Gabor Juhos * * 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. * */ @@ -32,15 +18,14 @@ #include #include #include +#include #include - #include + #include #include #include -#include - #include #include #include @@ -78,7 +63,6 @@ struct adm5120_flash_info { struct flash_desc { u32 phys; u32 srs_shift; - u32 mpmc_reg; }; /* @@ -98,11 +82,9 @@ static u32 flash_sizes[8] = { 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, } }; @@ -176,7 +158,7 @@ static void adm5120_flash_write(struct map_info *map, const map_word datum, { 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; @@ -224,14 +206,15 @@ static int adm5120_flash_initres(struct adm5120_flash_info *info) 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; @@ -242,18 +225,13 @@ out: 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; @@ -264,17 +242,30 @@ static int adm5120_flash_initinfo(struct adm5120_flash_info *info, 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"); @@ -330,7 +321,7 @@ static void adm5120_flash_initbanks(struct adm5120_flash_info *info) #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]; @@ -340,6 +331,7 @@ static int adm5120_flash_initparts(struct adm5120_flash_info *info) info->nr_parts = 0; + pdata = info->dev->dev.platform_data; if (pdata == NULL) goto out; @@ -358,7 +350,7 @@ static int adm5120_flash_initparts(struct adm5120_flash_info *info) num_parsers = MAX_PARSED_PARTS; parser[1] = NULL; - for (i=0; inr_parts) { del_mtd_partitions(info->mtd); - for (i=0; iparts[i] != NULL) kfree(info->parts[i]); } else { @@ -497,7 +489,8 @@ static int adm5120_flash_probe(struct platform_device *dev) 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); } @@ -509,7 +502,8 @@ err_out: } #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; @@ -569,6 +563,6 @@ static void __exit adm5120_flash_exit(void) module_init(adm5120_flash_init); module_exit(adm5120_flash_exit); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Gabor Juhos "); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gabor Juhos "); MODULE_DESCRIPTION(DRV_DESC);