[MTD] NOR flash map driver for TI OMAP boards. (10c96f2e) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/mtd/maps/Kconfig

+10 −1

Original line number	Original line	Diff line number	Diff line
	# drivers/mtd/maps/Kconfig		# drivers/mtd/maps/Kconfig
	# $Id: Kconfig,v 1.54 2005/06/30 22:41:36 tpoynor Exp $		# $Id: Kconfig,v 1.55 2005/07/02 01:53:24 tpoynor Exp $

	menu "Mapping drivers for chip access"		menu "Mapping drivers for chip access"
	depends on MTD!=n		depends on MTD!=n
	@@ -523,6 +523,15 @@ config MTD_MPC1211
	This enables access to the flash chips on the Interface MPC-1211(CTP/PCI/MPC-SH02).		This enables access to the flash chips on the Interface MPC-1211(CTP/PCI/MPC-SH02).
	If you have such a board, say 'Y'.		If you have such a board, say 'Y'.

			config MTD_OMAP_NOR
			tristate "TI OMAP board mappings"
			depends on MTD_CFI && ARCH_OMAP
			help
			This enables access to the NOR flash chips on TI OMAP-based
			boards defining flash platform devices and flash platform data.
			These boards include the Innovator, H2, H3, OSK, Perseus2, and
			more. If you have such a board, say 'Y'.

	# This needs CFI or JEDEC, depending on the cards found.		# This needs CFI or JEDEC, depending on the cards found.
	config MTD_PCI		config MTD_PCI
	tristate "PCI MTD driver"		tristate "PCI MTD driver"

drivers/mtd/maps/Makefile

+2 −1

Original line number	Original line	Diff line number	Diff line
	#		#
	# linux/drivers/maps/Makefile		# linux/drivers/maps/Makefile
	#		#
	# $Id: Makefile.common,v 1.29 2005/06/30 22:41:36 tpoynor Exp $		# $Id: Makefile.common,v 1.30 2005/07/02 01:53:24 tpoynor Exp $

	ifeq ($(CONFIG_MTD_COMPLEX_MAPPINGS),y)		ifeq ($(CONFIG_MTD_COMPLEX_MAPPINGS),y)
	obj-$(CONFIG_MTD) += map_funcs.o		obj-$(CONFIG_MTD) += map_funcs.o
	@@ -69,3 +69,4 @@ obj-$(CONFIG_MTD_WRSBC8260) += wr_sbc82xx_flash.o
	obj-$(CONFIG_MTD_DMV182) += dmv182.o		obj-$(CONFIG_MTD_DMV182) += dmv182.o
	obj-$(CONFIG_MTD_SHARP_SL) += sharpsl-flash.o		obj-$(CONFIG_MTD_SHARP_SL) += sharpsl-flash.o
	obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o		obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o
			obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o

drivers/mtd/maps/omap_nor.c

0 → 100644

+179 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* Flash memory support for various TI OMAP boards
			*
			* Copyright (C) 2001-2002 MontaVista Software Inc.
			* Copyright (C) 2003-2004 Texas Instruments
			* Copyright (C) 2004 Nokia Corporation
			*
			* Assembled using driver code copyright the companies above
			* and written by David Brownell, Jian Zhang <jzhang@ti.com>,
			* Tony Lindgren <tony@atomide.com> and others.
			*
			* 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.
			*
			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
			* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
			* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
			* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
			* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
			*
			* You should have received a copy of the GNU General Public License along
			* with this program; if not, write to the Free Software Foundation, Inc.,
			* 675 Mass Ave, Cambridge, MA 02139, USA.
			*/

			#include <linux/device.h>
			#include <linux/module.h>
			#include <linux/types.h>
			#include <linux/kernel.h>
			#include <linux/init.h>
			#include <linux/ioport.h>
			#include <linux/mtd/mtd.h>
			#include <linux/mtd/map.h>
			#include <linux/mtd/partitions.h>

			#include <asm/io.h>
			#include <asm/hardware.h>
			#include <asm/mach-types.h>
			#include <asm/mach/flash.h>
			#include <asm/arch/tc.h>

			#ifdef CONFIG_MTD_PARTITIONS
			static const char part_probes[] = { / "RedBoot", */ "cmdlinepart", NULL };
			#endif

			struct omapflash_info {
			struct mtd_partition *parts;
			struct mtd_info *mtd;
			struct map_info map;
			};

			static void omap_set_vpp(struct map_info *map, int enable)
			{
			static int count;

			if (enable) {
			if (count++ == 0)
			OMAP_EMIFS_CONFIG_REG \|= OMAP_EMIFS_CONFIG_WP;
			} else {
			if (count && (--count == 0))
			OMAP_EMIFS_CONFIG_REG &= ~OMAP_EMIFS_CONFIG_WP;
			}
			}

			static int __devinit omapflash_probe(struct device *dev)
			{
			int err;
			struct omapflash_info *info;
			struct platform_device *pdev = to_platform_device(dev);
			struct flash_platform_data *pdata = pdev->dev.platform_data;
			struct resource *res = pdev->resource;
			unsigned long size = res->end - res->start + 1;

			info = kmalloc(sizeof(struct omapflash_info), GFP_KERNEL);
			if (!info)
			return -ENOMEM;

			memset(info, 0, sizeof(struct omapflash_info));

			if (!request_mem_region(res->start, size, "flash")) {
			err = -EBUSY;
			goto out_free_info;
			}

			info->map.virt = ioremap(res->start, size);
			if (!info->map.virt) {
			err = -ENOMEM;
			goto out_release_mem_region;
			}
			info->map.name = pdev->dev.bus_id;
			info->map.phys = res->start;
			info->map.size = size;
			info->map.bankwidth = pdata->width;
			info->map.set_vpp = omap_set_vpp;

			simple_map_init(&info->map);
			info->mtd = do_map_probe(pdata->map_name, &info->map);
			if (!info->mtd) {
			err = -EIO;
			goto out_iounmap;
			}
			info->mtd->owner = THIS_MODULE;

			#ifdef CONFIG_MTD_PARTITIONS
			err = parse_mtd_partitions(info->mtd, part_probes, &info->parts, 0);
			if (err > 0)
			add_mtd_partitions(info->mtd, info->parts, err);
			else if (err < 0 && pdata->parts)
			add_mtd_partitions(info->mtd, pdata->parts, pdata->nr_parts);
			else
			#endif
			add_mtd_device(info->mtd);

			dev_set_drvdata(&pdev->dev, info);

			return 0;

			out_iounmap:
			iounmap(info->map.virt);
			out_release_mem_region:
			release_mem_region(res->start, size);
			out_free_info:
			kfree(info);

			return err;
			}

			static int __devexit omapflash_remove(struct device *dev)
			{
			struct platform_device *pdev = to_platform_device(dev);
			struct omapflash_info *info = dev_get_drvdata(&pdev->dev);

			dev_set_drvdata(&pdev->dev, NULL);

			if (info) {
			if (info->parts) {
			del_mtd_partitions(info->mtd);
			kfree(info->parts);
			} else
			del_mtd_device(info->mtd);
			map_destroy(info->mtd);
			release_mem_region(info->map.phys, info->map.size);
			iounmap((void __iomem *) info->map.virt);
			kfree(info);
			}

			return 0;
			}

			static struct device_driver omapflash_driver = {
			.name = "omapflash",
			.bus = &platform_bus_type,
			.probe = omapflash_probe,
			.remove = __devexit_p(omapflash_remove),
			};

			static int __init omapflash_init(void)
			{
			return driver_register(&omapflash_driver);
			}

			static void __exit omapflash_exit(void)
			{
			driver_unregister(&omapflash_driver);
			}

			module_init(omapflash_init);
			module_exit(omapflash_exit);

			MODULE_LICENSE("GPL");
			MODULE_DESCRIPTION("MTD NOR map driver for TI OMAP boards");