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author | Gabor Juhos <juhosg@openwrt.org> | 2012-01-22 22:38:11 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2012-01-22 22:38:11 +0000 |
commit | 386cbfe45bc521baa889a8c261b2c77e69fc956f (patch) | |
tree | 71540fd6978935a11c30ec4ecf20c208114a27b8 /target/linux/ar71xx/files/drivers/mtd | |
parent | 7b7427e52c9f3626b0ef669f17edb5a0e3bd9908 (diff) | |
download | master-31e0f0ae-386cbfe45bc521baa889a8c261b2c77e69fc956f.tar.gz master-31e0f0ae-386cbfe45bc521baa889a8c261b2c77e69fc956f.tar.bz2 master-31e0f0ae-386cbfe45bc521baa889a8c261b2c77e69fc956f.zip |
ar71xx: move arch specific files to files-2.6.39
SVN-Revision: 29867
Diffstat (limited to 'target/linux/ar71xx/files/drivers/mtd')
-rw-r--r-- | target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c b/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c deleted file mode 100644 index 51ba7f5780..0000000000 --- a/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c +++ /dev/null @@ -1,310 +0,0 @@ -/* - * Parallel flash driver for the Atheros AR91xx SoC - * - * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> - * - * 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/device.h> -#include <linux/platform_device.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> -#include <linux/io.h> - -#include <asm/mach-ar71xx/ar71xx.h> -#include <asm/mach-ar71xx/ar91xx_flash.h> - -#define DRV_NAME "ar91xx-flash" - -struct ar91xx_flash_info { - struct mtd_info *mtd; - struct map_info map; -#ifdef CONFIG_MTD_PARTITIONS - int nr_parts; - struct mtd_partition *parts; -#endif -}; - -static map_word ar91xx_flash_read(struct map_info *map, unsigned long ofs) -{ - map_word val; - - if (map_bankwidth_is_1(map)) - val.x[0] = __raw_readb(map->virt + (ofs ^ 3)); - else if (map_bankwidth_is_2(map)) - val.x[0] = __raw_readw(map->virt + (ofs ^ 2)); - else - val = map_word_ff(map); - - return val; -} - -static void ar91xx_flash_write(struct map_info *map, map_word d, - unsigned long ofs) -{ - if (map_bankwidth_is_1(map)) - __raw_writeb(d.x[0], map->virt + (ofs ^ 3)); - else if (map_bankwidth_is_2(map)) - __raw_writew(d.x[0], map->virt + (ofs ^ 2)); - - mb(); -} - -static map_word ar91xx_flash_read_lock(struct map_info *map, unsigned long ofs) -{ - map_word ret; - - ar71xx_flash_acquire(); - ret = ar91xx_flash_read(map, ofs); - ar71xx_flash_release(); - - return ret; -} - -static void ar91xx_flash_write_lock(struct map_info *map, map_word d, - unsigned long ofs) -{ - ar71xx_flash_acquire(); - ar91xx_flash_write(map, d, ofs); - ar71xx_flash_release(); -} - -static void ar91xx_flash_copy_from_lock(struct map_info *map, void *to, - unsigned long from, ssize_t len) -{ - ar71xx_flash_acquire(); - inline_map_copy_from(map, to, from, len); - ar71xx_flash_release(); -} - -static void ar91xx_flash_copy_to_lock(struct map_info *map, unsigned long to, - const void *from, ssize_t len) -{ - ar71xx_flash_acquire(); - inline_map_copy_to(map, to, from, len); - ar71xx_flash_release(); -} - -static int ar91xx_flash_remove(struct platform_device *pdev) -{ - struct ar91xx_flash_platform_data *pdata; - struct ar91xx_flash_info *info; - - info = platform_get_drvdata(pdev); - if (info == NULL) - return 0; - - platform_set_drvdata(pdev, NULL); - - if (info->mtd == NULL) - return 0; - - pdata = pdev->dev.platform_data; -#ifdef CONFIG_MTD_PARTITIONS - if (info->nr_parts) { - del_mtd_partitions(info->mtd); - kfree(info->parts); - } else if (pdata->nr_parts) { - del_mtd_partitions(info->mtd); - } else { - del_mtd_device(info->mtd); - } -#else - del_mtd_device(info->mtd); -#endif - map_destroy(info->mtd); - - return 0; -} - -static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; -#ifdef CONFIG_MTD_PARTITIONS -static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL }; -#endif - -static int ar91xx_flash_probe(struct platform_device *pdev) -{ - struct ar91xx_flash_platform_data *pdata; - struct ar91xx_flash_info *info; - struct resource *res; - struct resource *region; - const char **probe_type; - int err = 0; - - pdata = pdev->dev.platform_data; - if (pdata == NULL) - return -EINVAL; - - info = devm_kzalloc(&pdev->dev, sizeof(struct ar91xx_flash_info), - GFP_KERNEL); - if (info == NULL) { - err = -ENOMEM; - goto err_out; - } - - platform_set_drvdata(pdev, info); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) { - err = -ENOENT; - goto err_out; - } - - dev_info(&pdev->dev, "%.8llx at %.8llx\n", - (unsigned long long)(res->end - res->start + 1), - (unsigned long long)res->start); - - region = devm_request_mem_region(&pdev->dev, - res->start, res->end - res->start + 1, - dev_name(&pdev->dev)); - if (region == NULL) { - dev_err(&pdev->dev, "could not reserve memory region\n"); - err = -ENOMEM; - goto err_out; - } - - info->map.name = dev_name(&pdev->dev); - info->map.phys = res->start; - info->map.size = res->end - res->start + 1; - info->map.bankwidth = pdata->width; - - info->map.virt = devm_ioremap(&pdev->dev, info->map.phys, - info->map.size); - if (info->map.virt == NULL) { - dev_err(&pdev->dev, "failed to ioremap flash region\n"); - err = -EIO; - goto err_out; - } - - simple_map_init(&info->map); - if (pdata->is_shared) { - info->map.read = ar91xx_flash_read_lock; - info->map.write = ar91xx_flash_write_lock; - info->map.copy_from = ar91xx_flash_copy_from_lock; - info->map.copy_to = ar91xx_flash_copy_to_lock; - } else { - info->map.read = ar91xx_flash_read; - info->map.write = ar91xx_flash_write; - } - - probe_type = rom_probe_types; - for (; info->mtd == NULL && *probe_type != NULL; probe_type++) - info->mtd = do_map_probe(*probe_type, &info->map); - - if (info->mtd == NULL) { - dev_err(&pdev->dev, "map_probe failed\n"); - err = -ENXIO; - goto err_out; - } - - info->mtd->owner = THIS_MODULE; - -#ifdef CONFIG_MTD_PARTITIONS - if (pdata->nr_parts) { - dev_info(&pdev->dev, "using static partition mapping\n"); - add_mtd_partitions(info->mtd, pdata->parts, pdata->nr_parts); - return 0; - } - - err = parse_mtd_partitions(info->mtd, part_probe_types, - &info->parts, 0); - if (err > 0) { - add_mtd_partitions(info->mtd, info->parts, err); - return 0; - } -#endif - - add_mtd_device(info->mtd); - return 0; - -err_out: - ar91xx_flash_remove(pdev); - return err; -} - -#ifdef CONFIG_PM -static int ar91xx_flash_suspend(struct platform_device *dev, pm_message_t state) -{ - struct ar91xx_flash_info *info = platform_get_drvdata(dev); - int ret = 0; - - if (info->mtd->suspend) - ret = info->mtd->suspend(info->mtd); - - if (ret) - goto fail; - - return 0; - -fail: - if (info->mtd->suspend) { - BUG_ON(!info->mtd->resume); - info->mtd->resume(info->mtd); - } - - return ret; -} - -static int ar91xx_flash_resume(struct platform_device *pdev) -{ - struct ar91xx_flash_info *info = platform_get_drvdata(pdev); - - if (info->mtd->resume) - info->mtd->resume(info->mtd); - - return 0; -} - -static void ar91xx_flash_shutdown(struct platform_device *pdev) -{ - struct ar91xx_flash_info *info = platform_get_drvdata(pdev); - - if (info->mtd->suspend && info->mtd->resume) - if (info->mtd->suspend(info->mtd) == 0) - info->mtd->resume(info->mtd); -} -#else -#define ar91xx_flash_suspend NULL -#define ar91xx_flash_resume NULL -#define ar91xx_flash_shutdown NULL -#endif - -static struct platform_driver ar91xx_flash_driver = { - .probe = ar91xx_flash_probe, - .remove = ar91xx_flash_remove, - .suspend = ar91xx_flash_suspend, - .resume = ar91xx_flash_resume, - .shutdown = ar91xx_flash_shutdown, - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - }, -}; - -static int __init ar91xx_flash_init(void) -{ - return platform_driver_register(&ar91xx_flash_driver); -} - -static void __exit ar91xx_flash_exit(void) -{ - platform_driver_unregister(&ar91xx_flash_driver); -} - -module_init(ar91xx_flash_init); -module_exit(ar91xx_flash_exit); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); -MODULE_DESCRIPTION("Parallel flash driver for the Atheros AR91xx SoC"); -MODULE_ALIAS("platform:" DRV_NAME); |