diff options
author | John Crispin <john@openwrt.org> | 2015-03-16 07:41:19 +0000 |
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committer | John Crispin <john@openwrt.org> | 2015-03-16 07:41:19 +0000 |
commit | eb396d656911024685f1f514036aec091669211f (patch) | |
tree | e4dff014a9a7369de044b1afbb7d3b4886f9b585 /target/linux/adm5120/files-3.8/drivers/mtd/maps | |
parent | 46f01fec7f851474ffd2604749b80403ec93d4b6 (diff) | |
download | upstream-eb396d656911024685f1f514036aec091669211f.tar.gz upstream-eb396d656911024685f1f514036aec091669211f.tar.bz2 upstream-eb396d656911024685f1f514036aec091669211f.zip |
adm5120: drop 3.8 and 3.14 support
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 44823
Diffstat (limited to 'target/linux/adm5120/files-3.8/drivers/mtd/maps')
-rw-r--r-- | target/linux/adm5120/files-3.8/drivers/mtd/maps/adm5120-flash.c | 482 |
1 files changed, 0 insertions, 482 deletions
diff --git a/target/linux/adm5120/files-3.8/drivers/mtd/maps/adm5120-flash.c b/target/linux/adm5120/files-3.8/drivers/mtd/maps/adm5120-flash.c deleted file mode 100644 index f6a86f4897..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/mtd/maps/adm5120-flash.c +++ /dev/null @@ -1,482 +0,0 @@ -/* - * Platform driver for NOR flash devices on ADM5120 based boards - * - * 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 version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#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/mach-adm5120/adm5120_defs.h> -#include <asm/mach-adm5120/adm5120_switch.h> -#include <asm/mach-adm5120/adm5120_mpmc.h> -#include <asm/mach-adm5120/adm5120_platform.h> - -#define DRV_NAME "adm5120-flash" -#define DRV_DESC "ADM5120 flash MAP driver" -#define MAX_PARSED_PARTS 8 - -#ifdef ADM5120_FLASH_DEBUG -#define MAP_DBG(m, f, a...) printk(KERN_INFO "%s: " f, (m->name) , ## a) -#else -#define MAP_DBG(m, f, a...) do {} while (0) -#endif -#define MAP_ERR(m, f, a...) printk(KERN_ERR "%s: " f, (m->name) , ## a) -#define MAP_INFO(m, f, a...) printk(KERN_INFO "%s: " f, (m->name) , ## a) - -struct adm5120_map_info { - struct map_info map; - void (*switch_bank)(unsigned); - unsigned long window_size; -}; - -struct adm5120_flash_info { - struct mtd_info *mtd; - struct resource *res; - struct platform_device *dev; - struct adm5120_map_info amap; -}; - -struct flash_desc { - u32 phys; - u32 srs_shift; -}; - -/* - * Globals - */ -static DEFINE_SPINLOCK(adm5120_flash_spin); -#define FLASH_LOCK() spin_lock(&adm5120_flash_spin) -#define FLASH_UNLOCK() spin_unlock(&adm5120_flash_spin) - -static u32 flash_bankwidths[4] = { 1, 2, 4, 0 }; - -static u32 flash_sizes[8] = { - 0, 512*1024, 1024*1024, 2*1024*1024, - 4*1024*1024, 0, 0, 0 -}; - -static struct flash_desc flash_descs[2] = { - { - .phys = ADM5120_SRAM0_BASE, - .srs_shift = MEMCTRL_SRS0_SHIFT, - }, { - .phys = ADM5120_SRAM1_BASE, - .srs_shift = MEMCTRL_SRS1_SHIFT, - } -}; - -static const char const *probe_types[] = { - "cfi_probe", - "jedec_probe", - "map_rom", - NULL -}; - -static const char const *parse_types[] = { - "cmdlinepart", -#ifdef CONFIG_MTD_REDBOOT_PARTS - "RedBoot", -#endif -#ifdef CONFIG_MTD_MYLOADER_PARTS - "MyLoader", -#endif - NULL, -}; - -#define BANK_SIZE (2<<20) -#define BANK_SIZE_MAX (4<<20) -#define BANK_OFFS_MASK (BANK_SIZE-1) -#define BANK_START_MASK (~BANK_OFFS_MASK) - -static inline struct adm5120_map_info *map_to_amap(struct map_info *map) -{ - return (struct adm5120_map_info *)map; -} - -static void adm5120_flash_switchbank(struct map_info *map, - unsigned long ofs) -{ - struct adm5120_map_info *amap = map_to_amap(map); - unsigned bank; - - if (amap->switch_bank == NULL) - return; - - bank = (ofs & BANK_START_MASK) >> 21; - if (bank > 1) - BUG(); - - MAP_DBG(map, "switching to bank %u, ofs=%lX\n", bank, ofs); - amap->switch_bank(bank); -} - -static map_word adm5120_flash_read(struct map_info *map, unsigned long ofs) -{ - struct adm5120_map_info *amap = map_to_amap(map); - map_word ret; - - MAP_DBG(map, "reading from ofs %lX\n", ofs); - - if (ofs >= amap->window_size) - return map_word_ff(map); - - FLASH_LOCK(); - adm5120_flash_switchbank(map, ofs); - ret = inline_map_read(map, (ofs & (amap->window_size-1))); - FLASH_UNLOCK(); - - return ret; -} - -static void adm5120_flash_write(struct map_info *map, const map_word datum, - unsigned long ofs) -{ - struct adm5120_map_info *amap = map_to_amap(map); - - MAP_DBG(map, "writing to ofs %lX\n", ofs); - - if (ofs > amap->window_size) - return; - - FLASH_LOCK(); - adm5120_flash_switchbank(map, ofs); - inline_map_write(map, datum, (ofs & (amap->window_size-1))); - FLASH_UNLOCK(); -} - -static void adm5120_flash_copy_from(struct map_info *map, void *to, - unsigned long from, ssize_t len) -{ - struct adm5120_map_info *amap = map_to_amap(map); - char *p; - ssize_t t; - - MAP_DBG(map, "copy_from, to=%lX, from=%lX, len=%lX\n", - (unsigned long)to, from, (unsigned long)len); - - if (from > amap->window_size) - return; - - p = (char *)to; - while (len > 0) { - t = len; - if ((from < BANK_SIZE) && ((from+len) > BANK_SIZE)) - t = BANK_SIZE-from; - - FLASH_LOCK(); - MAP_DBG(map, "copying %lu byte(s) from %lX to %lX\n", - (unsigned long)t, (from & (amap->window_size-1)), - (unsigned long)p); - adm5120_flash_switchbank(map, from); - inline_map_copy_from(map, p, (from & (amap->window_size-1)), t); - FLASH_UNLOCK(); - p += t; - from += t; - len -= t; - } -} - -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, 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, info->amap.window_size); - if (map->virt == NULL) { - MAP_ERR(map, "failed to ioremap flash region\n"); - err = -ENOMEM; - goto out; - } - -out: - return err; -} - -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 = 0; - - map->name = dev_name(&dev->dev); - - if (dev->id > 1) { - MAP_ERR(map, "invalid flash id\n"); - goto err_out; - } - - fdesc = &flash_descs[dev->id]; - - 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, "unable to determine window size\n"); - goto err_out; - } - - /* get flash bus width */ - 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"); - goto err_out; - } - - map->phys = fdesc->phys; - map->size = BANK_SIZE_MAX; - - simple_map_init(map); - map->read = adm5120_flash_read; - map->write = adm5120_flash_write; - map->copy_from = adm5120_flash_copy_from; - - if (pdata) { - map->set_vpp = pdata->set_vpp; - info->amap.switch_bank = pdata->switch_bank; - } - - info->dev = dev; - - MAP_INFO(map, "probing at 0x%lX, size:%ldKiB, width:%d bits\n", - (unsigned long)map->phys, - (unsigned long)info->amap.window_size >> 10, - map->bankwidth*8); - - return 0; - -err_out: - return -ENODEV; -} - -static void adm5120_flash_initbanks(struct adm5120_flash_info *info) -{ - struct map_info *map = &info->amap.map; - - if (info->mtd->size <= BANK_SIZE) - /* no bank switching needed */ - return; - - if (info->amap.switch_bank) { - info->amap.window_size = info->mtd->size; - return; - } - - MAP_ERR(map, "reduce visibility from %ldKiB to %ldKiB\n", - (unsigned long)map->size >> 10, - (unsigned long)info->mtd->size >> 10); - - info->mtd->size = info->amap.window_size; -} - -static int adm5120_flash_remove(struct platform_device *dev) -{ - struct adm5120_flash_info *info; - - info = platform_get_drvdata(dev); - if (info == NULL) - return 0; - - platform_set_drvdata(dev, NULL); - - if (info->mtd != NULL) { - mtd_device_unregister(info->mtd); - map_destroy(info->mtd); - } - - if (info->amap.map.virt != NULL) - iounmap(info->amap.map.virt); - - if (info->res != NULL) { - release_resource(info->res); - kfree(info->res); - } - - return 0; -} - -static int adm5120_flash_probe(struct platform_device *dev) -{ - struct adm5120_flash_platform_data *pdata; - struct adm5120_flash_info *info; - struct map_info *map; - const char **probe_type; - int err; - - pdata = dev->dev.platform_data; - if (!pdata) { - dev_err(&dev->dev, "no platform data\n"); - return -EINVAL; - } - - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (info == NULL) { - err = -ENOMEM; - goto err_out; - } - - platform_set_drvdata(dev, info); - - err = adm5120_flash_initinfo(info, dev); - if (err) - goto err_out; - - err = adm5120_flash_initres(info); - if (err) - goto err_out; - - map = &info->amap.map; - for (probe_type = probe_types; info->mtd == NULL && *probe_type != NULL; - probe_type++) - info->mtd = do_map_probe(*probe_type, map); - - if (info->mtd == NULL) { - MAP_ERR(map, "map_probe failed\n"); - err = -ENXIO; - goto err_out; - } - - adm5120_flash_initbanks(info); - - if (info->mtd->size < info->amap.window_size) { - /* readjust resources */ - iounmap(map->virt); - release_resource(info->res); - kfree(info->res); - - info->amap.window_size = info->mtd->size; - map->size = info->mtd->size; - MAP_INFO(map, "reducing map size to %ldKiB\n", - (unsigned long)map->size >> 10); - err = adm5120_flash_initres(info); - if (err) - goto err_out; - } - - MAP_INFO(map, "found at 0x%lX, size:%ldKiB, width:%d bits\n", - (unsigned long)map->phys, (unsigned long)info->mtd->size >> 10, - map->bankwidth*8); - - info->mtd->owner = THIS_MODULE; - - err = mtd_device_parse_register(info->mtd, parse_types, 0, - pdata->parts, pdata->nr_parts); - if (err) - goto err_out; - - return 0; - -err_out: - adm5120_flash_remove(dev); - return err; -} - -#ifdef CONFIG_PM -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; - - if (info) - ret = info->mtd->suspend(info->mtd); - - return ret; -} - -static int adm5120_flash_resume(struct platform_device *dev) -{ - struct adm5120_flash_info *info = platform_get_drvdata(dev); - - if (info) - info->mtd->resume(info->mtd); - - return 0; -} - -static void adm5120_flash_shutdown(struct platform_device *dev) -{ - struct adm5120_flash_info *info = platform_get_drvdata(dev); - - if (info && info->mtd->suspend(info->mtd) == 0) - info->mtd->resume(info->mtd); -} -#endif - -static struct platform_driver adm5120_flash_driver = { - .probe = adm5120_flash_probe, - .remove = adm5120_flash_remove, -#ifdef CONFIG_PM - .suspend = adm5120_flash_suspend, - .resume = adm5120_flash_resume, - .shutdown = adm5120_flash_shutdown, -#endif - .driver = { - .name = DRV_NAME, - }, -}; - -static int __init adm5120_flash_init(void) -{ - int err; - - err = platform_driver_register(&adm5120_flash_driver); - - return err; -} - -static void __exit adm5120_flash_exit(void) -{ - platform_driver_unregister(&adm5120_flash_driver); -} - -module_init(adm5120_flash_init); -module_exit(adm5120_flash_exit); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); -MODULE_DESCRIPTION(DRV_DESC); |