diff options
Diffstat (limited to 'drivers/mtd/maps/physmap.c')
| -rw-r--r-- | drivers/mtd/maps/physmap.c | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c deleted file mode 100644 index cc2adbbcd60f..000000000000 --- a/drivers/mtd/maps/physmap.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Normal mappings of chips in physical memory - * - * Copyright (C) 2003 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * 031022 - [jsun] add run-time configure and partition setup - */ - -#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/mtd/physmap.h> -#include <linux/mtd/concat.h> -#include <linux/io.h> - -#define MAX_RESOURCES 4 - -struct physmap_flash_info { - struct mtd_info *mtd[MAX_RESOURCES]; - struct mtd_info *cmtd; - struct map_info map[MAX_RESOURCES]; - spinlock_t vpp_lock; - int vpp_refcnt; -}; - -static int physmap_flash_remove(struct platform_device *dev) -{ - struct physmap_flash_info *info; - struct physmap_flash_data *physmap_data; - int i; - - info = platform_get_drvdata(dev); - if (info == NULL) - return 0; - - physmap_data = dev_get_platdata(&dev->dev); - - if (info->cmtd) { - mtd_device_unregister(info->cmtd); - if (info->cmtd != info->mtd[0]) - mtd_concat_destroy(info->cmtd); - } - - for (i = 0; i < MAX_RESOURCES; i++) { - if (info->mtd[i] != NULL) - map_destroy(info->mtd[i]); - } - - if (physmap_data->exit) - physmap_data->exit(dev); - - return 0; -} - -static void physmap_set_vpp(struct map_info *map, int state) -{ - struct platform_device *pdev; - struct physmap_flash_data *physmap_data; - struct physmap_flash_info *info; - unsigned long flags; - - pdev = (struct platform_device *)map->map_priv_1; - physmap_data = dev_get_platdata(&pdev->dev); - - if (!physmap_data->set_vpp) - return; - - info = platform_get_drvdata(pdev); - - spin_lock_irqsave(&info->vpp_lock, flags); - if (state) { - if (++info->vpp_refcnt == 1) /* first nested 'on' */ - physmap_data->set_vpp(pdev, 1); - } else { - if (--info->vpp_refcnt == 0) /* last nested 'off' */ - physmap_data->set_vpp(pdev, 0); - } - spin_unlock_irqrestore(&info->vpp_lock, flags); -} - -static const char * const rom_probe_types[] = { - "cfi_probe", "jedec_probe", "qinfo_probe", "map_rom", NULL }; - -static const char * const part_probe_types[] = { - "cmdlinepart", "RedBoot", "afs", NULL }; - -static int physmap_flash_probe(struct platform_device *dev) -{ - struct physmap_flash_data *physmap_data; - struct physmap_flash_info *info; - const char * const *probe_type; - const char * const *part_types; - int err = 0; - int i; - int devices_found = 0; - - physmap_data = dev_get_platdata(&dev->dev); - if (physmap_data == NULL) - return -ENODEV; - - info = devm_kzalloc(&dev->dev, sizeof(struct physmap_flash_info), - GFP_KERNEL); - if (info == NULL) { - err = -ENOMEM; - goto err_out; - } - - if (physmap_data->init) { - err = physmap_data->init(dev); - if (err) - goto err_out; - } - - platform_set_drvdata(dev, info); - - for (i = 0; i < dev->num_resources; i++) { - printk(KERN_NOTICE "physmap platform flash device: %.8llx at %.8llx\n", - (unsigned long long)resource_size(&dev->resource[i]), - (unsigned long long)dev->resource[i].start); - - if (!devm_request_mem_region(&dev->dev, - dev->resource[i].start, - resource_size(&dev->resource[i]), - dev_name(&dev->dev))) { - dev_err(&dev->dev, "Could not reserve memory region\n"); - err = -ENOMEM; - goto err_out; - } - - info->map[i].name = dev_name(&dev->dev); - info->map[i].phys = dev->resource[i].start; - info->map[i].size = resource_size(&dev->resource[i]); - info->map[i].bankwidth = physmap_data->width; - info->map[i].set_vpp = physmap_set_vpp; - info->map[i].pfow_base = physmap_data->pfow_base; - info->map[i].map_priv_1 = (unsigned long)dev; - - info->map[i].virt = devm_ioremap(&dev->dev, info->map[i].phys, - info->map[i].size); - if (info->map[i].virt == NULL) { - dev_err(&dev->dev, "Failed to ioremap flash region\n"); - err = -EIO; - goto err_out; - } - - simple_map_init(&info->map[i]); - - probe_type = rom_probe_types; - if (physmap_data->probe_type == NULL) { - for (; info->mtd[i] == NULL && *probe_type != NULL; probe_type++) - info->mtd[i] = do_map_probe(*probe_type, &info->map[i]); - } else - info->mtd[i] = do_map_probe(physmap_data->probe_type, &info->map[i]); - - if (info->mtd[i] == NULL) { - dev_err(&dev->dev, "map_probe failed\n"); - err = -ENXIO; - goto err_out; - } else { - devices_found++; - } - info->mtd[i]->dev.parent = &dev->dev; - } - - if (devices_found == 1) { - info->cmtd = info->mtd[0]; - } else if (devices_found > 1) { - /* - * We detected multiple devices. Concatenate them together. - */ - info->cmtd = mtd_concat_create(info->mtd, devices_found, dev_name(&dev->dev)); - if (info->cmtd == NULL) - err = -ENXIO; - } - if (err) - goto err_out; - - spin_lock_init(&info->vpp_lock); - - part_types = physmap_data->part_probe_types ? : part_probe_types; - - mtd_device_parse_register(info->cmtd, part_types, NULL, - physmap_data->parts, physmap_data->nr_parts); - return 0; - -err_out: - physmap_flash_remove(dev); - return err; -} - -#ifdef CONFIG_PM -static void physmap_flash_shutdown(struct platform_device *dev) -{ - struct physmap_flash_info *info = platform_get_drvdata(dev); - int i; - - for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++) - if (mtd_suspend(info->mtd[i]) == 0) - mtd_resume(info->mtd[i]); -} -#else -#define physmap_flash_shutdown NULL -#endif - -static struct platform_driver physmap_flash_driver = { - .probe = physmap_flash_probe, - .remove = physmap_flash_remove, - .shutdown = physmap_flash_shutdown, - .driver = { - .name = "physmap-flash", - }, -}; - - -#ifdef CONFIG_MTD_PHYSMAP_COMPAT -static struct physmap_flash_data physmap_flash_data = { - .width = CONFIG_MTD_PHYSMAP_BANKWIDTH, -}; - -static struct resource physmap_flash_resource = { - .start = CONFIG_MTD_PHYSMAP_START, - .end = CONFIG_MTD_PHYSMAP_START + CONFIG_MTD_PHYSMAP_LEN - 1, - .flags = IORESOURCE_MEM, -}; - -static struct platform_device physmap_flash = { - .name = "physmap-flash", - .id = 0, - .dev = { - .platform_data = &physmap_flash_data, - }, - .num_resources = 1, - .resource = &physmap_flash_resource, -}; -#endif - -static int __init physmap_init(void) -{ - int err; - - err = platform_driver_register(&physmap_flash_driver); -#ifdef CONFIG_MTD_PHYSMAP_COMPAT - if (err == 0) { - err = platform_device_register(&physmap_flash); - if (err) - platform_driver_unregister(&physmap_flash_driver); - } -#endif - - return err; -} - -static void __exit physmap_exit(void) -{ -#ifdef CONFIG_MTD_PHYSMAP_COMPAT - platform_device_unregister(&physmap_flash); -#endif - platform_driver_unregister(&physmap_flash_driver); -} - -module_init(physmap_init); -module_exit(physmap_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); -MODULE_DESCRIPTION("Generic configurable MTD map driver"); - -/* legacy platform drivers can't hotplug or coldplg */ -#ifndef CONFIG_MTD_PHYSMAP_COMPAT -/* work with hotplug and coldplug */ -MODULE_ALIAS("platform:physmap-flash"); -#endif |