mtd: maps: Merge physmap_of.c into physmap-core.c (642b1e8d) · Commits · 戴 / test

drivers/mtd/maps/Kconfig

+2 −2

Original line number	Diff line number	Diff line
		@@ -66,8 +66,8 @@ config MTD_PHYSMAP_BANKWIDTH
		used internally by the CFI drivers.

		config MTD_PHYSMAP_OF
		tristate "Memory device in physical memory map based on OF description"
		depends on OF && (MTD_CFI \|\| MTD_JEDECPROBE \|\| MTD_ROM \|\| MTD_RAM)
		bool "Memory device in physical memory map based on OF description"
		depends on OF && MTD_PHYSMAP
		help
		This provides a 'mapping' driver which allows the NOR Flash, ROM
		and RAM driver code to communicate with chips which are mapped

drivers/mtd/maps/Makefile

+2 −5

Original line number	Diff line number	Diff line
		@@ -18,13 +18,10 @@ obj-$(CONFIG_MTD_CK804XROM) += ck804xrom.o
		obj-$(CONFIG_MTD_TSUNAMI) += tsunami_flash.o
		obj-$(CONFIG_MTD_PXA2XX) += pxa2xx-flash.o
		physmap-objs-y += physmap-core.o
		physmap-objs-$(CONFIG_MTD_PHYSMAP_OF_VERSATILE) += physmap_of_versatile.o
		physmap-objs-$(CONFIG_MTD_PHYSMAP_OF_GEMINI) += physmap_of_gemini.o
		physmap-objs := $(physmap-objs-y)
		obj-$(CONFIG_MTD_PHYSMAP) += physmap.o
		physmap_of-objs-y += physmap_of_core.o
		physmap_of-objs-$(CONFIG_MTD_PHYSMAP_OF_VERSATILE) += physmap_of_versatile.o
		physmap_of-objs-$(CONFIG_MTD_PHYSMAP_OF_GEMINI) += physmap_of_gemini.o
		physmap_of-objs := $(physmap_of-objs-y)
		obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o
		obj-$(CONFIG_MTD_PISMO) += pismo.o
		obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o
		obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o

drivers/mtd/maps/physmap-core.c

+236 −25

Original line number	Diff line number	Diff line
		@@ -6,6 +6,13 @@
		* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
		*
		* 031022 - [jsun] add run-time configure and partition setup
		*
		* Device tree support:
		* Copyright (C) 2006 MontaVista Software Inc.
		* Author: Vitaly Wool <vwool@ru.mvista.com>
		*
		* Revised to handle newer style flash binding by:
		* Copyright (C) 2007 David Gibson, IBM Corporation.
		*/

		#include <linux/module.h>
		@@ -20,7 +27,12 @@
		#include <linux/mtd/partitions.h>
		#include <linux/mtd/physmap.h>
		#include <linux/mtd/concat.h>
		#include <linux/mtd/cfi_endian.h>
		#include <linux/io.h>
		#include <linux/of_device.h>

		#include "physmap_of_gemini.h"
		#include "physmap_of_versatile.h"

		struct physmap_flash_info {
		unsigned int nmaps;
		@@ -29,6 +41,10 @@ struct physmap_flash_info {
		struct map_info *maps;
		spinlock_t vpp_lock;
		int vpp_refcnt;
		const char *probe_type;
		const char * const *part_types;
		unsigned int nparts;
		const struct mtd_partition *parts;
		};

		static int physmap_flash_remove(struct platform_device *dev)
		@@ -41,8 +57,6 @@ static int physmap_flash_remove(struct platform_device *dev)
		if (!info)
		return 0;

		physmap_data = dev_get_platdata(&dev->dev);

		if (info->cmtd) {
		err = mtd_device_unregister(info->cmtd);
		if (err)
		@@ -57,7 +71,8 @@ static int physmap_flash_remove(struct platform_device *dev)
		map_destroy(info->mtds[i]);
		}

		if (physmap_data->exit)
		physmap_data = dev_get_platdata(&dev->dev);
		if (physmap_data && physmap_data->exit)
		physmap_data->exit(dev);

		return 0;
		@@ -89,6 +104,172 @@ static void physmap_set_vpp(struct map_info *map, int state)
		spin_unlock_irqrestore(&info->vpp_lock, flags);
		}

		#if IS_ENABLED(CONFIG_MTD_PHYSMAP_OF)
		static const struct of_device_id of_flash_match[] = {
		{
		.compatible = "cfi-flash",
		.data = "cfi_probe",
		},
		{
		/*
		* FIXME: JEDEC chips can't be safely and reliably
		* probed, although the mtd code gets it right in
		* practice most of the time. We should use the
		* vendor and device ids specified by the binding to
		* bypass the heuristic probe code, but the mtd layer
		* provides, at present, no interface for doing so
		* :(.
		*/
		.compatible = "jedec-flash",
		.data = "jedec_probe",
		},
		{
		.compatible = "mtd-ram",
		.data = "map_ram",
		},
		{
		.compatible = "mtd-rom",
		.data = "map_rom",
		},
		{
		.type = "rom",
		.compatible = "direct-mapped"
		},
		{ /* sentinel */ },
		};
		MODULE_DEVICE_TABLE(of, of_flash_match);

		static const char * const of_default_part_probes[] = {
		"cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL
		};

		static const char * const of_get_part_probes(struct platform_device dev)
		{
		struct device_node *dp = dev->dev.of_node;
		const char **res;
		int count;

		count = of_property_count_strings(dp, "linux,part-probe");
		if (count < 0)
		return of_default_part_probes;

		res = devm_kcalloc(&dev->dev, count + 1, sizeof(*res), GFP_KERNEL);
		if (!res)
		return NULL;

		count = of_property_read_string_array(dp, "linux,part-probe", res,
		count);
		if (count < 0)
		return NULL;

		return res;
		}

		static const char of_select_probe_type(struct platform_device dev)
		{
		struct device_node *dp = dev->dev.of_node;
		const struct of_device_id *match;
		const char *probe_type;

		match = of_match_device(of_flash_match, &dev->dev);
		probe_type = match->data;
		if (probe_type)
		return probe_type;

		dev_warn(&dev->dev,
		"Device tree uses obsolete \"direct-mapped\" flash binding\n");

		of_property_read_string(dp, "probe-type", &probe_type);
		if (!probe_type)
		return NULL;

		if (!strcmp(probe_type, "CFI")) {
		probe_type = "cfi_probe";
		} else if (!strcmp(probe_type, "JEDEC")) {
		probe_type = "jedec_probe";
		} else if (!strcmp(probe_type, "ROM")) {
		probe_type = "map_rom";
		} else {
		dev_warn(&dev->dev,
		"obsolete_probe: don't know probe type '%s', mapping as rom\n",
		probe_type);
		probe_type = "map_rom";
		}

		return probe_type;
		}

		static int physmap_flash_of_init(struct platform_device *dev)
		{
		struct physmap_flash_info *info = platform_get_drvdata(dev);
		struct device_node *dp = dev->dev.of_node;
		const char *mtd_name = NULL;
		int err, swap = 0;
		bool map_indirect;
		unsigned int i;
		u32 bankwidth;

		if (!dp)
		return -EINVAL;

		info->probe_type = of_select_probe_type(dev);

		info->part_types = of_get_part_probes(dev);
		if (!info->part_types)
		return -ENOMEM;

		of_property_read_string(dp, "linux,mtd-name", &mtd_name);

		map_indirect = of_property_read_bool(dp, "no-unaligned-direct-access");

		err = of_property_read_u32(dp, "bank-width", &bankwidth);
		if (err) {
		dev_err(&dev->dev, "Can't get bank width from device tree\n");
		return err;
		}

		if (of_property_read_bool(dp, "big-endian"))
		swap = CFI_BIG_ENDIAN;
		else if (of_property_read_bool(dp, "little-endian"))
		swap = CFI_LITTLE_ENDIAN;

		for (i = 0; i < info->nmaps; i++) {
		info->maps[i].name = mtd_name;
		info->maps[i].swap = swap;
		info->maps[i].bankwidth = bankwidth;
		info->maps[i].device_node = dp;

		err = of_flash_probe_gemini(dev, dp, &info->maps[i]);
		if (err)
		return err;

		err = of_flash_probe_versatile(dev, dp, &info->maps[i]);
		if (err)
		return err;

		/*
		* On some platforms (e.g. MPC5200) a direct 1:1 mapping
		* may cause problems with JFFS2 usage, as the local bus (LPB)
		* doesn't support unaligned accesses as implemented in the
		* JFFS2 code via memcpy(). By setting NO_XIP, the
		* flash will not be exposed directly to the MTD users
		* (e.g. JFFS2) any more.
		*/
		if (map_indirect)
		info->maps[i].phys = NO_XIP;
		}

		return 0;
		}
		#else /* IS_ENABLED(CONFIG_MTD_PHYSMAP_OF) */
		#define of_flash_match NULL

		static int physmap_flash_of_init(struct platform_device *dev)
		{
		return -ENOTSUPP;
		}
		#endif /* IS_ENABLED(CONFIG_MTD_PHYSMAP_OF) */

		static const char * const rom_probe_types[] = {
		"cfi_probe", "jedec_probe", "qinfo_probe", "map_rom", NULL
		};
		@@ -97,18 +278,46 @@ static const char * const part_probe_types[] = {
		"cmdlinepart", "RedBoot", "afs", NULL
		};

		static int physmap_flash_probe(struct platform_device *dev)
		static int physmap_flash_pdata_init(struct platform_device *dev)
		{
		struct physmap_flash_info *info = platform_get_drvdata(dev);
		struct physmap_flash_data *physmap_data;
		unsigned int i;
		int err;

		physmap_data = dev_get_platdata(&dev->dev);
		if (!physmap_data)
		return -EINVAL;

		info->probe_type = physmap_data->probe_type;
		info->part_types = physmap_data->part_probe_types ? : part_probe_types;
		info->parts = physmap_data->parts;
		info->nparts = physmap_data->nr_parts;

		if (physmap_data->init) {
		err = physmap_data->init(dev);
		if (err)
		return err;
		}

		for (i = 0; i < info->nmaps; i++) {
		info->maps[i].bankwidth = physmap_data->width;
		info->maps[i].pfow_base = physmap_data->pfow_base;
		info->maps[i].set_vpp = physmap_set_vpp;
		}

		return 0;
		}

		static int physmap_flash_probe(struct platform_device *dev)
		{
		struct physmap_flash_info *info;
		const char * const *probe_type;
		const char * const *part_types;
		int err = 0;
		int i;

		physmap_data = dev_get_platdata(&dev->dev);
		if (!physmap_data)
		return -ENODEV;
		if (!dev->dev.of_node && !dev_get_platdata(&dev->dev))
		return -EINVAL;

		info = devm_kzalloc(&dev->dev, sizeof(*info), GFP_KERNEL);
		if (!info)
		@@ -132,14 +341,16 @@ static int physmap_flash_probe(struct platform_device *dev)
		if (!info->mtds)
		return -ENOMEM;

		if (physmap_data->init) {
		err = physmap_data->init(dev);
		if (err)
		goto err_out;
		}

		platform_set_drvdata(dev, info);

		if (dev->dev.of_node)
		err = physmap_flash_of_init(dev);
		else
		err = physmap_flash_pdata_init(dev);

		if (err)
		return err;

		for (i = 0; i < info->nmaps; i++) {
		struct resource *res;

		@@ -154,22 +365,22 @@ static int physmap_flash_probe(struct platform_device *dev)
		res);

		info->maps[i].name = dev_name(&dev->dev);

		if (!info->maps[i].phys)
		info->maps[i].phys = res->start;

		info->maps[i].size = resource_size(res);
		info->maps[i].bankwidth = physmap_data->width;
		info->maps[i].set_vpp = physmap_set_vpp;
		info->maps[i].pfow_base = physmap_data->pfow_base;
		info->maps[i].map_priv_1 = (unsigned long)dev;

		simple_map_init(&info->maps[i]);

		probe_type = rom_probe_types;
		if (!physmap_data->probe_type) {
		if (!info->probe_type) {
		for (; !info->mtds[i] && *probe_type; probe_type++)
		info->mtds[i] = do_map_probe(*probe_type,
		&info->maps[i]);
		} else {
		info->mtds[i] = do_map_probe(physmap_data->probe_type,
		info->mtds[i] = do_map_probe(info->probe_type,
		&info->maps[i]);
		}

		@@ -197,11 +408,9 @@ static int physmap_flash_probe(struct platform_device *dev)

		spin_lock_init(&info->vpp_lock);

		part_types = physmap_data->part_probe_types ? : part_probe_types;

		err = mtd_device_parse_register(info->cmtd, part_types, NULL,
		physmap_data->parts,
		physmap_data->nr_parts);
		mtd_set_of_node(info->cmtd, dev->dev.of_node);
		err = mtd_device_parse_register(info->cmtd, info->part_types, NULL,
		info->parts, info->nparts);
		if (err)
		goto err_out;

		@@ -232,6 +441,7 @@ static struct platform_driver physmap_flash_driver = {
		.shutdown = physmap_flash_shutdown,
		.driver = {
		.name = "physmap-flash",
		.of_match_table = of_flash_match,
		},
		};

		@@ -286,6 +496,7 @@ module_exit(physmap_exit);

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
		MODULE_AUTHOR("Vitaly Wool <vwool@ru.mvista.com>");
		MODULE_DESCRIPTION("Generic configurable MTD map driver");

		/* legacy platform drivers can't hotplug or coldplg */

drivers/mtd/maps/physmap_of_core.c

deleted100644 → 0

+0 −368

Original line number	Diff line number	Diff line
		/*
		* Flash mappings described by the OF (or flattened) device tree
		*
		* Copyright (C) 2006 MontaVista Software Inc.
		* Author: Vitaly Wool <vwool@ru.mvista.com>
		*
		* Revised to handle newer style flash binding by:
		* Copyright (C) 2007 David Gibson, IBM Corporation.
		*
		* 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.
		*/

		#include <linux/module.h>
		#include <linux/types.h>
		#include <linux/device.h>
		#include <linux/mtd/mtd.h>
		#include <linux/mtd/map.h>
		#include <linux/mtd/partitions.h>
		#include <linux/mtd/concat.h>
		#include <linux/mtd/cfi_endian.h>
		#include <linux/of.h>
		#include <linux/of_address.h>
		#include <linux/of_platform.h>
		#include <linux/slab.h>
		#include "physmap_of_gemini.h"
		#include "physmap_of_versatile.h"

		struct of_flash_list {
		struct mtd_info *mtd;
		struct map_info map;
		};

		struct of_flash {
		struct mtd_info *cmtd;
		int list_size; /* number of elements in of_flash_list */
		struct of_flash_list list[0];
		};

		static int of_flash_remove(struct platform_device *dev)
		{
		struct of_flash *info;
		int i;

		info = dev_get_drvdata(&dev->dev);
		if (!info)
		return 0;
		dev_set_drvdata(&dev->dev, NULL);

		if (info->cmtd) {
		mtd_device_unregister(info->cmtd);
		if (info->cmtd != info->list[0].mtd)
		mtd_concat_destroy(info->cmtd);
		}

		for (i = 0; i < info->list_size; i++)
		if (info->list[i].mtd)
		map_destroy(info->list[i].mtd);

		return 0;
		}

		static const char * const rom_probe_types[] = {
		"cfi_probe", "jedec_probe", "map_rom" };

		/* Helper function to handle probing of the obsolete "direct-mapped"
		* compatible binding, which has an extra "probe-type" property
		* describing the type of flash probe necessary. */
		static struct mtd_info obsolete_probe(struct platform_device dev,
		struct map_info *map)
		{
		struct device_node *dp = dev->dev.of_node;
		const char *of_probe;
		struct mtd_info *mtd;
		int i;

		dev_warn(&dev->dev, "Device tree uses obsolete \"direct-mapped\" "
		"flash binding\n");

		of_probe = of_get_property(dp, "probe-type", NULL);
		if (!of_probe) {
		for (i = 0; i < ARRAY_SIZE(rom_probe_types); i++) {
		mtd = do_map_probe(rom_probe_types[i], map);
		if (mtd)
		return mtd;
		}
		return NULL;
		} else if (strcmp(of_probe, "CFI") == 0) {
		return do_map_probe("cfi_probe", map);
		} else if (strcmp(of_probe, "JEDEC") == 0) {
		return do_map_probe("jedec_probe", map);
		} else {
		if (strcmp(of_probe, "ROM") != 0)
		dev_warn(&dev->dev, "obsolete_probe: don't know probe "
		"type '%s', mapping as rom\n", of_probe);
		return do_map_probe("map_rom", map);
		}
		}

		/* When partitions are set we look for a linux,part-probe property which
		specifies the list of partition probers to use. If none is given then the
		default is use. These take precedence over other device tree
		information. */
		static const char * const part_probe_types_def[] = {
		"cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };

		static const char * const of_get_probes(struct device_node dp)
		{
		const char **res;
		int count;

		count = of_property_count_strings(dp, "linux,part-probe");
		if (count < 0)
		return part_probe_types_def;

		res = kcalloc(count + 1, sizeof(*res), GFP_KERNEL);
		if (!res)
		return NULL;

		count = of_property_read_string_array(dp, "linux,part-probe", res,
		count);
		if (count < 0)
		return NULL;

		return res;
		}

		static void of_free_probes(const char * const *probes)
		{
		if (probes != part_probe_types_def)
		kfree(probes);
		}

		static const struct of_device_id of_flash_match[];
		static int of_flash_probe(struct platform_device *dev)
		{
		const char * const *part_probe_types;
		const struct of_device_id *match;
		struct device_node *dp = dev->dev.of_node;
		struct resource res;
		struct of_flash *info;
		const char *probe_type;
		const __be32 *width;
		int err;
		int i;
		int count;
		const __be32 *p;
		int reg_tuple_size;
		struct mtd_info **mtd_list = NULL;
		resource_size_t res_size;
		bool map_indirect;
		const char *mtd_name = NULL;

		match = of_match_device(of_flash_match, &dev->dev);
		if (!match)
		return -EINVAL;
		probe_type = match->data;

		reg_tuple_size = (of_n_addr_cells(dp) + of_n_size_cells(dp)) * sizeof(u32);

		of_property_read_string(dp, "linux,mtd-name", &mtd_name);

		/*
		* Get number of "reg" tuples. Scan for MTD devices on area's
		* described by each "reg" region. This makes it possible (including
		* the concat support) to support the Intel P30 48F4400 chips which
		* consists internally of 2 non-identical NOR chips on one die.
		*/
		p = of_get_property(dp, "reg", &count);
		if (!p \|\| count % reg_tuple_size != 0) {
		dev_err(&dev->dev, "Malformed reg property on %pOF\n",
		dev->dev.of_node);
		err = -EINVAL;
		goto err_flash_remove;
		}
		count /= reg_tuple_size;

		map_indirect = of_property_read_bool(dp, "no-unaligned-direct-access");

		err = -ENOMEM;
		info = devm_kzalloc(&dev->dev,
		sizeof(struct of_flash) +
		sizeof(struct of_flash_list) * count, GFP_KERNEL);
		if (!info)
		goto err_flash_remove;

		dev_set_drvdata(&dev->dev, info);

		mtd_list = kcalloc(count, sizeof(*mtd_list), GFP_KERNEL);
		if (!mtd_list)
		goto err_flash_remove;

		for (i = 0; i < count; i++) {
		err = -ENXIO;
		if (of_address_to_resource(dp, i, &res)) {
		/*
		* Continue with next register tuple if this
		* one is not mappable
		*/
		continue;
		}

		dev_dbg(&dev->dev, "of_flash device: %pR\n", &res);

		err = -EBUSY;
		res_size = resource_size(&res);
		info->list[i].map.virt = devm_ioremap_resource(&dev->dev, &res);
		if (IS_ERR(info->list[i].map.virt)) {
		err = PTR_ERR(info->list[i].map.virt);
		goto err_out;
		}

		err = -ENXIO;
		width = of_get_property(dp, "bank-width", NULL);
		if (!width) {
		dev_err(&dev->dev, "Can't get bank width from device"
		" tree\n");
		goto err_out;
		}

		info->list[i].map.name = mtd_name ?: dev_name(&dev->dev);
		info->list[i].map.phys = res.start;
		info->list[i].map.size = res_size;
		info->list[i].map.bankwidth = be32_to_cpup(width);
		info->list[i].map.device_node = dp;

		if (of_property_read_bool(dp, "big-endian"))
		info->list[i].map.swap = CFI_BIG_ENDIAN;
		else if (of_property_read_bool(dp, "little-endian"))
		info->list[i].map.swap = CFI_LITTLE_ENDIAN;

		err = of_flash_probe_gemini(dev, dp, &info->list[i].map);
		if (err)
		goto err_out;
		err = of_flash_probe_versatile(dev, dp, &info->list[i].map);
		if (err)
		goto err_out;

		simple_map_init(&info->list[i].map);

		/*
		* On some platforms (e.g. MPC5200) a direct 1:1 mapping
		* may cause problems with JFFS2 usage, as the local bus (LPB)
		* doesn't support unaligned accesses as implemented in the
		* JFFS2 code via memcpy(). By setting NO_XIP, the
		* flash will not be exposed directly to the MTD users
		* (e.g. JFFS2) any more.
		*/
		if (map_indirect)
		info->list[i].map.phys = NO_XIP;

		if (probe_type) {
		info->list[i].mtd = do_map_probe(probe_type,
		&info->list[i].map);
		} else {
		info->list[i].mtd = obsolete_probe(dev,
		&info->list[i].map);
		}

		/* Fall back to mapping region as ROM */
		if (!info->list[i].mtd) {
		dev_warn(&dev->dev,
		"do_map_probe() failed for type %s\n",
		probe_type);

		info->list[i].mtd = do_map_probe("map_rom",
		&info->list[i].map);
		}
		mtd_list[i] = info->list[i].mtd;

		err = -ENXIO;
		if (!info->list[i].mtd) {
		dev_err(&dev->dev, "do_map_probe() failed\n");
		goto err_out;
		} else {
		info->list_size++;
		}
		info->list[i].mtd->dev.parent = &dev->dev;
		}

		err = 0;
		info->cmtd = NULL;
		if (info->list_size == 1) {
		info->cmtd = info->list[0].mtd;
		} else if (info->list_size > 1) {
		/*
		* We detected multiple devices. Concatenate them together.
		*/
		info->cmtd = mtd_concat_create(mtd_list, info->list_size,
		dev_name(&dev->dev));
		}
		if (info->cmtd == NULL)
		err = -ENXIO;

		if (err)
		goto err_out;

		info->cmtd->dev.parent = &dev->dev;
		mtd_set_of_node(info->cmtd, dp);
		part_probe_types = of_get_probes(dp);
		if (!part_probe_types) {
		err = -ENOMEM;
		goto err_out;
		}
		mtd_device_parse_register(info->cmtd, part_probe_types, NULL,
		NULL, 0);
		of_free_probes(part_probe_types);

		kfree(mtd_list);

		return 0;

		err_out:
		kfree(mtd_list);
		err_flash_remove:
		of_flash_remove(dev);

		return err;
		}

		static const struct of_device_id of_flash_match[] = {
		{
		.compatible = "cfi-flash",
		.data = (void *)"cfi_probe",
		},
		{
		/* FIXME: JEDEC chips can't be safely and reliably
		* probed, although the mtd code gets it right in
		* practice most of the time. We should use the
		* vendor and device ids specified by the binding to
		* bypass the heuristic probe code, but the mtd layer
		* provides, at present, no interface for doing so
		* :(. */
		.compatible = "jedec-flash",
		.data = (void *)"jedec_probe",
		},
		{
		.compatible = "mtd-ram",
		.data = (void *)"map_ram",
		},
		{
		.compatible = "mtd-rom",
		.data = (void *)"map_rom",
		},
		{
		.type = "rom",
		.compatible = "direct-mapped"
		},
		{ },
		};
		MODULE_DEVICE_TABLE(of, of_flash_match);

		static struct platform_driver of_flash_driver = {
		.driver = {
		.name = "of-flash",
		.of_match_table = of_flash_match,
		},
		.probe = of_flash_probe,
		.remove = of_flash_remove,
		};

		module_platform_driver(of_flash_driver);

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Vitaly Wool <vwool@ru.mvista.com>");
		MODULE_DESCRIPTION("Device tree based MTD map driver");

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