[MTD] Remove Elan-104NC (b4eab4b8) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/mtd/maps/Kconfig

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		# drivers/mtd/maps/Kconfig
		# $Id: Kconfig,v 1.45 2005/02/27 21:50:21 ppopov Exp $
		# $Id: Kconfig,v 1.46 2005/03/02 14:51:04 dvrabel Exp $

		menu "Mapping drivers for chip access"
		depends on MTD!=n
		@@ -122,16 +122,6 @@ config MTD_SBC_GXX
		More info at
		<http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>.

		config MTD_ELAN_104NC
		tristate "CFI Flash device mapped on Arcom ELAN-104NC"
		depends on X86 && MTD_CFI_INTELEXT && MTD_PARTITIONS && MTD_COMPLEX_MAPPINGS
		help
		This provides a driver for the on-board flash of the Arcom Control
		System's ELAN-104NC development board. By default the flash
		is split into 3 partitions which are accessed as separate MTD
		devices. This board utilizes Intel StrataFlash. More info at
		<http://www.arcomcontrols.com/products/icp/pc104/processors/ELAN104NC.htm>.

		config MTD_LUBBOCK
		tristate "CFI Flash device mapped on Intel Lubbock XScale eval board"
		depends on ARCH_LUBBOCK && MTD_CFI_INTELEXT && MTD_PARTITIONS

drivers/mtd/maps/Makefile

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		#
		# linux/drivers/maps/Makefile
		#
		# $Id: Makefile.common,v 1.25 2005/02/27 21:50:21 ppopov Exp $
		# $Id: Makefile.common,v 1.26 2005/03/02 14:51:04 dvrabel Exp $

		ifeq ($(CONFIG_MTD_COMPLEX_MAPPINGS),y)
		obj-$(CONFIG_MTD) += map_funcs.o
		@@ -15,7 +15,6 @@ obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o
		obj-$(CONFIG_MTD_CSTM_MIPS_IXX) += cstm_mips_ixx.o
		obj-$(CONFIG_MTD_DC21285) += dc21285.o
		obj-$(CONFIG_MTD_DILNETPC) += dilnetpc.o
		obj-$(CONFIG_MTD_ELAN_104NC) += elan-104nc.o
		obj-$(CONFIG_MTD_EPXA10DB) += epxa10db-flash.o
		obj-$(CONFIG_MTD_IQ80310) += iq80310.o
		obj-$(CONFIG_MTD_L440GX) += l440gx.o

drivers/mtd/maps/elan-104nc.c

deleted100644 → 0

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		/* elan-104nc.c -- MTD map driver for Arcom Control Systems ELAN-104NC

		Copyright (C) 2000 Arcom Control System Ltd

		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 program is distributed in the hope that it will be useful,
		but WITHOUT ANY WARRANTY; without even the implied warranty of
		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		GNU General Public License for more details.

		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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

		$Id: elan-104nc.c,v 1.25 2004/11/28 09:40:39 dwmw2 Exp $

		The ELAN-104NC has up to 8 Mibyte of Intel StrataFlash (28F320/28F640) in x16
		mode. This drivers uses the CFI probe and Intel Extended Command Set drivers.

		The flash is accessed as follows:

		32 kbyte memory window at 0xb0000-0xb7fff

		16 bit I/O port (0x22) for some sort of paging.

		The single flash device is divided into 3 partition which appear as separate
		MTD devices.

		Linux thinks that the I/O port is used by the PIC and hence check_region() will
		always fail. So we don't do it. I just hope it doesn't break anything.
		*/
		#include <linux/module.h>
		#include <linux/slab.h>
		#include <linux/ioport.h>
		#include <linux/init.h>
		#include <asm/io.h>

		#include <linux/mtd/map.h>
		#include <linux/mtd/mtd.h>
		#include <linux/mtd/partitions.h>

		#define WINDOW_START 0xb0000
		/* Number of bits in offset. */
		#define WINDOW_SHIFT 15
		#define WINDOW_LENGTH (1 << WINDOW_SHIFT)
		/* The bits for the offset into the window. */
		#define WINDOW_MASK (WINDOW_LENGTH-1)
		#define PAGE_IO 0x22
		#define PAGE_IO_SIZE 2

		static volatile int page_in_window = -1; // Current page in window.
		static void __iomem *iomapadr;
		static DEFINE_SPINLOCK(elan_104nc_spin);

		/* partition_info gives details on the logical partitions that the split the
		* single flash device into. If the size if zero we use up to the end of the
		* device. */
		static struct mtd_partition partition_info[]={
		{ .name = "ELAN-104NC flash boot partition",
		.offset = 0,
		.size = 640*1024 },
		{ .name = "ELAN-104NC flash partition 1",
		.offset = 640*1024,
		.size = 896*1024 },
		{ .name = "ELAN-104NC flash partition 2",
		.offset = (640+896)*1024 }
		};
		#define NUM_PARTITIONS (sizeof(partition_info)/sizeof(partition_info[0]))

		/*
		* If no idea what is going on here. This is taken from the FlashFX stuff.
		*/
		#define ROMCS 1

		static inline void elan_104nc_setup(void)
		{
		u16 t;

		outw( 0x0023 + ROMCS*2, PAGE_IO );
		t=inb( PAGE_IO+1 );

		t=(t & 0xf9) \| 0x04;

		outw( ((0x0023 + ROMCS*2) \| (t << 8)), PAGE_IO );
		}

		static inline void elan_104nc_page(struct map_info *map, unsigned long ofs)
		{
		unsigned long page = ofs >> WINDOW_SHIFT;

		if( page!=page_in_window ) {
		int cmd1;
		int cmd2;

		cmd1=(page & 0x700) + 0x0833 + ROMCS*0x4000;
		cmd2=((page & 0xff) << 8) + 0x0032;

		outw( cmd1, PAGE_IO );
		outw( cmd2, PAGE_IO );

		page_in_window = page;
		}
		}


		static map_word elan_104nc_read16(struct map_info *map, unsigned long ofs)
		{
		map_word ret;
		spin_lock(&elan_104nc_spin);
		elan_104nc_page(map, ofs);
		ret.x[0] = readw(iomapadr + (ofs & WINDOW_MASK));
		spin_unlock(&elan_104nc_spin);
		return ret;
		}

		static void elan_104nc_copy_from(struct map_info map, void to, unsigned long from, ssize_t len)
		{
		while (len) {
		unsigned long thislen = len;
		if (len > (WINDOW_LENGTH - (from & WINDOW_MASK)))
		thislen = WINDOW_LENGTH-(from & WINDOW_MASK);

		spin_lock(&elan_104nc_spin);
		elan_104nc_page(map, from);
		memcpy_fromio(to, iomapadr + (from & WINDOW_MASK), thislen);
		spin_unlock(&elan_104nc_spin);
		to += thislen;
		from += thislen;
		len -= thislen;
		}
		}

		static void elan_104nc_write16(struct map_info *map, map_word d, unsigned long adr)
		{
		spin_lock(&elan_104nc_spin);
		elan_104nc_page(map, adr);
		writew(d.x[0], iomapadr + (adr & WINDOW_MASK));
		spin_unlock(&elan_104nc_spin);
		}

		static void elan_104nc_copy_to(struct map_info map, unsigned long to, const void from, ssize_t len)
		{
		while(len) {
		unsigned long thislen = len;
		if (len > (WINDOW_LENGTH - (to & WINDOW_MASK)))
		thislen = WINDOW_LENGTH-(to & WINDOW_MASK);

		spin_lock(&elan_104nc_spin);
		elan_104nc_page(map, to);
		memcpy_toio(iomapadr + (to & WINDOW_MASK), from, thislen);
		spin_unlock(&elan_104nc_spin);
		to += thislen;
		from += thislen;
		len -= thislen;
		}
		}

		static struct map_info elan_104nc_map = {
		.name = "ELAN-104NC flash",
		.phys = NO_XIP,
		.size = 810241024, /* this must be set to a maximum possible amount
		of flash so the cfi probe routines find all
		the chips */
		.bankwidth = 2,
		.read = elan_104nc_read16,
		.copy_from = elan_104nc_copy_from,
		.write = elan_104nc_write16,
		.copy_to = elan_104nc_copy_to
		};

		/* MTD device for all of the flash. */
		static struct mtd_info *all_mtd;

		static void cleanup_elan_104nc(void)
		{
		if( all_mtd ) {
		del_mtd_partitions( all_mtd );
		map_destroy( all_mtd );
		}

		iounmap(iomapadr);
		}

		static int __init init_elan_104nc(void)
		{
		/* Urg! We use I/O port 0x22 without request_region()ing it,
		because it's already allocated to the PIC. */

		iomapadr = ioremap(WINDOW_START, WINDOW_LENGTH);
		if (!iomapadr) {
		printk( KERN_ERR"%s: failed to ioremap memory region\n",
		elan_104nc_map.name );
		return -EIO;
		}

		printk( KERN_INFO"%s: IO:0x%x-0x%x MEM:0x%x-0x%x\n",
		elan_104nc_map.name,
		PAGE_IO, PAGE_IO+PAGE_IO_SIZE-1,
		WINDOW_START, WINDOW_START+WINDOW_LENGTH-1 );

		elan_104nc_setup();

		/* Probe for chip. */
		all_mtd = do_map_probe("cfi_probe", &elan_104nc_map );
		if( !all_mtd ) {
		cleanup_elan_104nc();
		return -ENXIO;
		}

		all_mtd->owner = THIS_MODULE;

		/* Create MTD devices for each partition. */
		add_mtd_partitions( all_mtd, partition_info, NUM_PARTITIONS );

		return 0;
		}

		module_init(init_elan_104nc);
		module_exit(cleanup_elan_104nc);


		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Arcom Control Systems Ltd.");
		MODULE_DESCRIPTION("MTD map driver for Arcom Control Systems ELAN-104NC");