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path: root/drivers/mtd/maps/physmap.c
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Diffstat (limited to 'drivers/mtd/maps/physmap.c')
-rw-r--r--drivers/mtd/maps/physmap.c280
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
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-17 15:37:41 +0300