diff --git a/drivers/w1/Kconfig b/drivers/w1/Kconfig
new file mode 100644
index 0000000..2ab65c9
--- /dev/null
+++ b/drivers/w1/Kconfig
@@ -0,0 +1,57 @@
+menu "Dallas's 1-wire bus"
+
+config W1
+	tristate "Dallas's 1-wire support"
+	---help---
+	  Dallas's 1-wire bus is usefull to connect slow 1-pin devices 
+	  such as iButtons and thermal sensors.
+	  
+	  If you want W1 support, you should say Y here.
+
+	  This W1 support can also be built as a module.  If so, the module
+	  will be called wire.ko.
+
+config W1_MATROX
+	tristate "Matrox G400 transport layer for 1-wire"
+	depends on W1 && PCI
+	help
+	  Say Y here if you want to communicate with your 1-wire devices
+	  using Matrox's G400 GPIO pins.
+	  
+	  This support is also available as a module.  If so, the module 
+	  will be called matrox_w1.ko.
+
+config W1_DS9490
+	tristate "DS9490R transport layer driver"
+	depends on W1 && USB
+	help
+	  Say Y here if you want to have a driver for DS9490R UWB <-> W1 bridge.
+
+	  This support is also available as a module.  If so, the module 
+	  will be called ds9490r.ko.
+
+config W1_DS9490_BRIDGE
+	tristate "DS9490R USB <-> W1 transport layer for 1-wire"
+	depends on W1_DS9490
+	help
+	  Say Y here if you want to communicate with your 1-wire devices
+	  using DS9490R USB bridge.
+
+	  This support is also available as a module.  If so, the module 
+	  will be called ds_w1_bridge.ko.
+
+config W1_THERM
+	tristate "Thermal family implementation"
+	depends on W1
+	help
+	  Say Y here if you want to connect 1-wire thermal sensors to you
+	  wire.
+
+config W1_SMEM
+	tristate "Simple 64bit memory family implementation"
+	depends on W1
+	help
+	  Say Y here if you want to connect 1-wire 
+	  simple 64bit memory rom(ds2401/ds2411/ds1990*) to you wire.
+
+endmenu
diff --git a/drivers/w1/Makefile b/drivers/w1/Makefile
new file mode 100644
index 0000000..80725c3
--- /dev/null
+++ b/drivers/w1/Makefile
@@ -0,0 +1,20 @@
+#
+# Makefile for the Dallas's 1-wire bus.
+#
+
+ifneq ($(CONFIG_NET), y)
+EXTRA_CFLAGS	+= -DNETLINK_DISABLED
+endif
+
+obj-$(CONFIG_W1)	+= wire.o
+wire-objs		:= w1.o w1_int.o w1_family.o w1_netlink.o w1_io.o
+
+obj-$(CONFIG_W1_MATROX)		+= matrox_w1.o
+obj-$(CONFIG_W1_THERM)		+= w1_therm.o
+obj-$(CONFIG_W1_SMEM)		+= w1_smem.o
+
+obj-$(CONFIG_W1_DS9490)		+= ds9490r.o 
+ds9490r-objs    := dscore.o
+
+obj-$(CONFIG_W1_DS9490_BRIDGE)	+= ds_w1_bridge.o
+
diff --git a/drivers/w1/ds_w1_bridge.c b/drivers/w1/ds_w1_bridge.c
new file mode 100644
index 0000000..0baaeb5
--- /dev/null
+++ b/drivers/w1/ds_w1_bridge.c
@@ -0,0 +1,174 @@
+/*
+ * 	ds_w1_bridge.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include "../w1/w1.h"
+#include "../w1/w1_int.h"
+#include "dscore.h"
+	
+static struct ds_device *ds_dev;
+static struct w1_bus_master *ds_bus_master;
+
+static u8 ds9490r_touch_bit(unsigned long data, u8 bit)
+{
+	u8 ret;
+	struct ds_device *dev = (struct ds_device *)data;
+
+	if (ds_touch_bit(dev, bit, &ret))
+		return 0;
+
+	return ret;
+}
+
+static void ds9490r_write_bit(unsigned long data, u8 bit)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+
+	ds_write_bit(dev, bit);
+}
+
+static void ds9490r_write_byte(unsigned long data, u8 byte)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+
+	ds_write_byte(dev, byte);
+}
+
+static u8 ds9490r_read_bit(unsigned long data)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+	int err;
+	u8 bit = 0;
+
+	err = ds_touch_bit(dev, 1, &bit);
+	if (err)
+		return 0;
+	//err = ds_read_bit(dev, &bit);
+	//if (err)
+	//	return 0;
+
+	return bit & 1;
+}
+
+static u8 ds9490r_read_byte(unsigned long data)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+	int err;
+	u8 byte = 0;
+
+	err = ds_read_byte(dev, &byte);
+	if (err)
+		return 0;
+
+	return byte;
+}
+
+static void ds9490r_write_block(unsigned long data, u8 *buf, int len)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+
+	ds_write_block(dev, buf, len);
+}
+
+static u8 ds9490r_read_block(unsigned long data, u8 *buf, int len)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+	int err;
+
+	err = ds_read_block(dev, buf, len);
+	if (err < 0)
+		return 0;
+
+	return len;
+}
+
+static u8 ds9490r_reset(unsigned long data)
+{
+	struct ds_device *dev = (struct ds_device *)data;
+	struct ds_status st;
+	int err;
+
+	memset(&st, 0, sizeof(st));
+
+	err = ds_reset(dev, &st);
+	if (err)
+		return 1;
+
+	return 0;
+}
+
+static int __devinit ds_w1_init(void)
+{
+	int err;
+	
+	ds_bus_master = kmalloc(sizeof(*ds_bus_master), GFP_KERNEL);
+	if (!ds_bus_master) {
+		printk(KERN_ERR "Failed to allocate DS9490R USB<->W1 bus_master structure.\n");
+		return -ENOMEM;
+	}
+
+	ds_dev = ds_get_device();
+	if (!ds_dev) {
+		printk(KERN_ERR "DS9490R is not registered.\n");
+		err =  -ENODEV;
+		goto err_out_free_bus_master;
+	}
+
+	memset(ds_bus_master, 0, sizeof(*ds_bus_master));
+
+	ds_bus_master->data 		= (unsigned long)ds_dev;
+	ds_bus_master->touch_bit 	= &ds9490r_touch_bit;
+	ds_bus_master->read_bit 	= &ds9490r_read_bit;
+	ds_bus_master->write_bit 	= &ds9490r_write_bit;
+	ds_bus_master->read_byte 	= &ds9490r_read_byte;
+	ds_bus_master->write_byte 	= &ds9490r_write_byte;
+	ds_bus_master->read_block 	= &ds9490r_read_block;
+	ds_bus_master->write_block 	= &ds9490r_write_block;
+	ds_bus_master->reset_bus	= &ds9490r_reset;
+
+	err = w1_add_master_device(ds_bus_master);
+	if (err)
+		goto err_out_put_device;
+
+	return 0;
+
+err_out_put_device:
+	ds_put_device(ds_dev);
+err_out_free_bus_master:
+	kfree(ds_bus_master);
+
+	return err;
+}
+
+static void __devexit ds_w1_fini(void)
+{
+	w1_remove_master_device(ds_bus_master);
+	ds_put_device(ds_dev);
+	kfree(ds_bus_master);
+}
+
+module_init(ds_w1_init);
+module_exit(ds_w1_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
diff --git a/drivers/w1/dscore.c b/drivers/w1/dscore.c
new file mode 100644
index 0000000..eee6644
--- /dev/null
+++ b/drivers/w1/dscore.c
@@ -0,0 +1,789 @@
+/*
+ * 	dscore.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/usb.h>
+
+#include "dscore.h"
+
+static struct usb_device_id ds_id_table [] = {
+	{ USB_DEVICE(0x04fa, 0x2490) },
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, ds_id_table);
+
+int ds_probe(struct usb_interface *, const struct usb_device_id *);
+void ds_disconnect(struct usb_interface *);
+
+int ds_touch_bit(struct ds_device *, u8, u8 *);
+int ds_read_byte(struct ds_device *, u8 *);
+int ds_read_bit(struct ds_device *, u8 *);
+int ds_write_byte(struct ds_device *, u8);
+int ds_write_bit(struct ds_device *, u8);
+int ds_start_pulse(struct ds_device *, int);
+int ds_set_speed(struct ds_device *, int);
+int ds_reset(struct ds_device *, struct ds_status *);
+int ds_detect(struct ds_device *, struct ds_status *);
+int ds_stop_pulse(struct ds_device *, int);
+struct ds_device * ds_get_device(void);
+void ds_put_device(struct ds_device *);
+
+static inline void ds_dump_status(unsigned char *, unsigned char *, int);
+static int ds_send_control(struct ds_device *, u16, u16);
+static int ds_send_control_mode(struct ds_device *, u16, u16);
+static int ds_send_control_cmd(struct ds_device *, u16, u16);
+
+
+static struct usb_driver ds_driver = {
+	.owner =	THIS_MODULE,
+	.name =		"DS9490R",
+	.probe =	ds_probe,
+	.disconnect =	ds_disconnect,
+	.id_table =	ds_id_table,
+};
+
+static struct ds_device *ds_dev;
+
+struct ds_device * ds_get_device(void)
+{
+	if (ds_dev)
+		atomic_inc(&ds_dev->refcnt);
+	return ds_dev;
+}
+
+void ds_put_device(struct ds_device *dev)
+{
+	atomic_dec(&dev->refcnt);
+}
+
+static int ds_send_control_cmd(struct ds_device *dev, u16 value, u16 index)
+{
+	int err;
+	
+	err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), 
+			CONTROL_CMD, 0x40, value, index, NULL, 0, 1000);
+	if (err < 0) {
+		printk(KERN_ERR "Failed to send command control message %x.%x: err=%d.\n", 
+				value, index, err);
+		return err;
+	}
+
+	return err;
+}
+
+static int ds_send_control_mode(struct ds_device *dev, u16 value, u16 index)
+{
+	int err;
+	
+	err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), 
+			MODE_CMD, 0x40, value, index, NULL, 0, 1000);
+	if (err < 0) {
+		printk(KERN_ERR "Failed to send mode control message %x.%x: err=%d.\n", 
+				value, index, err);
+		return err;
+	}
+
+	return err;
+}
+
+static int ds_send_control(struct ds_device *dev, u16 value, u16 index)
+{
+	int err;
+	
+	err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), 
+			COMM_CMD, 0x40, value, index, NULL, 0, 1000);
+	if (err < 0) {
+		printk(KERN_ERR "Failed to send control message %x.%x: err=%d.\n", 
+				value, index, err);
+		return err;
+	}
+
+	return err;
+}
+
+static inline void ds_dump_status(unsigned char *buf, unsigned char *str, int off)
+{
+	printk("%45s: %8x\n", str, buf[off]);
+}
+
+int ds_recv_status_nodump(struct ds_device *dev, struct ds_status *st, unsigned char *buf, int size)
+{
+	int count, err;
+		
+	memset(st, 0, sizeof(st));
+	
+	count = 0;
+	err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_STATUS]), buf, size, &count, 100);
+	if (err < 0) {
+		printk(KERN_ERR "Failed to read 1-wire data from 0x%x: err=%d.\n", dev->ep[EP_STATUS], err);
+		return err;
+	}
+	
+	if (count >= sizeof(*st))
+		memcpy(st, buf, sizeof(*st));
+
+	return count;
+}
+
+static int ds_recv_status(struct ds_device *dev, struct ds_status *st)
+{
+	unsigned char buf[64];
+	int count, err = 0, i;
+	
+	memcpy(st, buf, sizeof(*st));
+		
+	count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
+	if (count < 0)
+		return err;
+	
+	printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], count);
+	for (i=0; i<count; ++i)
+		printk("%02x ", buf[i]);
+	printk("\n");
+
+	if (count >= 16) {
+		ds_dump_status(buf, "enable flag", 0);
+		ds_dump_status(buf, "1-wire speed", 1);
+		ds_dump_status(buf, "strong pullup duration", 2);
+		ds_dump_status(buf, "programming pulse duration", 3);
+		ds_dump_status(buf, "pulldown slew rate control", 4);
+		ds_dump_status(buf, "write-1 low time", 5);
+		ds_dump_status(buf, "data sample offset/write-0 recovery time", 6);
+		ds_dump_status(buf, "reserved (test register)", 7);
+		ds_dump_status(buf, "device status flags", 8);
+		ds_dump_status(buf, "communication command byte 1", 9);
+		ds_dump_status(buf, "communication command byte 2", 10);
+		ds_dump_status(buf, "communication command buffer status", 11);
+		ds_dump_status(buf, "1-wire data output buffer status", 12);
+		ds_dump_status(buf, "1-wire data input buffer status", 13);
+		ds_dump_status(buf, "reserved", 14);
+		ds_dump_status(buf, "reserved", 15);
+	}
+
+	memcpy(st, buf, sizeof(*st));
+
+	if (st->status & ST_EPOF) {
+		printk(KERN_INFO "Resetting device after ST_EPOF.\n");
+		err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
+		if (err)
+			return err;
+		count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
+		if (count < 0)
+			return err;
+	}
+#if 0
+	if (st->status & ST_IDLE) {
+		printk(KERN_INFO "Resetting pulse after ST_IDLE.\n");
+		err = ds_start_pulse(dev, PULLUP_PULSE_DURATION);
+		if (err)
+			return err;
+	}
+#endif
+	
+	return err;
+}
+
+static int ds_recv_data(struct ds_device *dev, unsigned char *buf, int size)
+{
+	int count, err;
+	struct ds_status st;
+	
+	count = 0;
+	err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]), 
+				buf, size, &count, 1000);
+	if (err < 0) {
+		printk(KERN_INFO "Clearing ep0x%x.\n", dev->ep[EP_DATA_IN]);
+		usb_clear_halt(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]));
+		ds_recv_status(dev, &st);
+		return err;
+	}
+
+#if 0
+	{
+		int i;
+
+		printk("%s: count=%d: ", __func__, count);
+		for (i=0; i<count; ++i)
+			printk("%02x ", buf[i]);
+		printk("\n");
+	}
+#endif
+	return count;
+}
+
+static int ds_send_data(struct ds_device *dev, unsigned char *buf, int len)
+{
+	int count, err;
+	
+	count = 0;
+	err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, 1000);
+	if (err < 0) {
+		printk(KERN_ERR "Failed to read 1-wire data from 0x02: err=%d.\n", err);
+		return err;
+	}
+
+	return err;
+}
+
+int ds_stop_pulse(struct ds_device *dev, int limit)
+{
+	struct ds_status st;
+	int count = 0, err = 0;
+	u8 buf[0x20];
+	
+	do {
+		err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0);
+		if (err)
+			break;
+		err = ds_send_control(dev, CTL_RESUME_EXE, 0);
+		if (err)
+			break;
+		err = ds_recv_status_nodump(dev, &st, buf, sizeof(buf));
+		if (err)
+			break;
+
+		if ((st.status & ST_SPUA) == 0) {
+			err = ds_send_control_mode(dev, MOD_PULSE_EN, 0);
+			if (err)
+				break;
+		}
+	} while(++count < limit);
+
+	return err;
+}
+
+int ds_detect(struct ds_device *dev, struct ds_status *st)
+{
+	int err;
+	
+	err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
+	if (err)
+		return err;
+
+	err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0);
+	if (err)
+		return err;
+	
+	err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40);
+	if (err)
+		return err;
+	
+	err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG);
+	if (err)
+		return err;
+
+	err = ds_recv_status(dev, st);
+
+	return err;
+}
+
+int ds_wait_status(struct ds_device *dev, struct ds_status *st)
+{
+	u8 buf[0x20];
+	int err, count = 0;
+
+	do {
+		err = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
+#if 0
+		if (err >= 0) {	
+			int i;
+			printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err);
+			for (i=0; i<err; ++i)
+				printk("%02x ", buf[i]);
+			printk("\n");
+		}
+#endif
+	} while(!(buf[0x08] & 0x20) && !(err < 0) && ++count < 100);
+
+
+	if (((err > 16) && (buf[0x10] & 0x01)) || count >= 100 || err < 0) {
+		ds_recv_status(dev, st);
+		return -1;
+	}
+	else {
+		return 0;
+	}
+}
+
+int ds_reset(struct ds_device *dev, struct ds_status *st)
+{
+	int err;
+
+	//err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_F | COMM_IM | COMM_SE, SPEED_FLEXIBLE);
+	err = ds_send_control(dev, 0x43, SPEED_NORMAL);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, st);
+#if 0
+	if (st->command_buffer_status) {
+		printk(KERN_INFO "Short circuit.\n");
+		return -EIO;
+	}
+#endif
+	
+	return 0;
+}
+
+int ds_set_speed(struct ds_device *dev, int speed)
+{
+	int err;
+	
+	if (speed != SPEED_NORMAL && speed != SPEED_FLEXIBLE && speed != SPEED_OVERDRIVE)
+		return -EINVAL;
+
+	if (speed != SPEED_OVERDRIVE)
+		speed = SPEED_FLEXIBLE;
+
+	speed &= 0xff;
+	
+	err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed);
+	if (err)
+		return err;
+
+	return err;
+}
+
+int ds_start_pulse(struct ds_device *dev, int delay)
+{
+	int err;
+	u8 del = 1 + (u8)(delay >> 4);
+	struct ds_status st;
+	
+#if 0
+	err = ds_stop_pulse(dev, 10);
+	if (err)
+		return err;
+
+	err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
+	if (err)
+		return err;
+#endif
+	err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del);
+	if (err)
+		return err;
+
+	err = ds_send_control(dev, COMM_PULSE | COMM_IM | COMM_F, 0);
+	if (err)
+		return err;
+
+	mdelay(delay);
+
+	ds_wait_status(dev, &st);
+	
+	return err;
+}
+
+int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit)
+{
+	int err, count;
+	struct ds_status st;
+	u16 value = (COMM_BIT_IO | COMM_IM) | ((bit) ? COMM_D : 0);
+	u16 cmd;
+	
+	err = ds_send_control(dev, value, 0);
+	if (err)
+		return err;
+
+	count = 0;
+	do {
+		err = ds_wait_status(dev, &st);
+		if (err)
+			return err;
+
+		cmd = st.command0 | (st.command1 << 8);
+	} while (cmd != value && ++count < 10);
+
+	if (err < 0 || count >= 10) {
+		printk(KERN_ERR "Failed to obtain status.\n");
+		return -EINVAL;
+	}
+
+	err = ds_recv_data(dev, tbit, sizeof(*tbit));
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+int ds_write_bit(struct ds_device *dev, u8 bit)
+{
+	int err;
+	struct ds_status st;
+	
+	err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit) ? COMM_D : 0, 0);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, &st);
+
+	return 0;
+}
+
+int ds_write_byte(struct ds_device *dev, u8 byte)
+{
+	int err;
+	struct ds_status st;
+	u8 rbyte;
+	
+	err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | COMM_SPU, byte);
+	if (err)
+		return err;
+
+	err = ds_wait_status(dev, &st);
+	if (err)
+		return err;
+		
+	err = ds_recv_data(dev, &rbyte, sizeof(rbyte));
+	if (err < 0)
+		return err;
+	
+	ds_start_pulse(dev, PULLUP_PULSE_DURATION);
+
+	return !(byte == rbyte);
+}
+
+int ds_read_bit(struct ds_device *dev, u8 *bit)
+{
+	int err;
+
+	err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
+	if (err)
+		return err;
+	
+	err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_SPU | COMM_D, 0);
+	if (err)
+		return err;
+	
+	err = ds_recv_data(dev, bit, sizeof(*bit));
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+int ds_read_byte(struct ds_device *dev, u8 *byte)
+{
+	int err;
+	struct ds_status st;
+
+	err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM , 0xff);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, &st);
+	
+	err = ds_recv_data(dev, byte, sizeof(*byte));
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+int ds_read_block(struct ds_device *dev, u8 *buf, int len)
+{
+	struct ds_status st;
+	int err;
+
+	if (len > 64*1024)
+		return -E2BIG;
+
+	memset(buf, 0xFF, len);
+	
+	err = ds_send_data(dev, buf, len);
+	if (err < 0)
+		return err;
+	
+	err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, &st);
+	
+	memset(buf, 0x00, len);
+	err = ds_recv_data(dev, buf, len);
+
+	return err;
+}
+
+int ds_write_block(struct ds_device *dev, u8 *buf, int len)
+{
+	int err;
+	struct ds_status st;
+	
+	err = ds_send_data(dev, buf, len);
+	if (err < 0)
+		return err;
+	
+	ds_wait_status(dev, &st);
+
+	err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, &st);
+
+	err = ds_recv_data(dev, buf, len);
+	if (err < 0)
+		return err;
+
+	ds_start_pulse(dev, PULLUP_PULSE_DURATION);
+	
+	return !(err == len);
+}
+
+int ds_search(struct ds_device *dev, u64 init, u64 *buf, u8 id_number, int conditional_search)
+{
+	int err;
+	u16 value, index;
+	struct ds_status st;
+
+	memset(buf, 0, sizeof(buf));
+	
+	err = ds_send_data(ds_dev, (unsigned char *)&init, 8);
+	if (err)
+		return err;
+	
+	ds_wait_status(ds_dev, &st);
+
+	value = COMM_SEARCH_ACCESS | COMM_IM | COMM_SM | COMM_F | COMM_RTS;
+	index = (conditional_search ? 0xEC : 0xF0) | (id_number << 8);
+	err = ds_send_control(ds_dev, value, index);
+	if (err)
+		return err;
+
+	ds_wait_status(ds_dev, &st);
+
+	err = ds_recv_data(ds_dev, (unsigned char *)buf, 8*id_number);
+	if (err < 0)
+		return err;
+
+	return err/8;
+}
+
+int ds_match_access(struct ds_device *dev, u64 init)
+{
+	int err;
+	struct ds_status st;
+
+	err = ds_send_data(dev, (unsigned char *)&init, sizeof(init));
+	if (err)
+		return err;
+	
+	ds_wait_status(dev, &st);
+
+	err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, &st);
+
+	return 0;
+}
+
+int ds_set_path(struct ds_device *dev, u64 init)
+{
+	int err;
+	struct ds_status st;
+	u8 buf[9];
+
+	memcpy(buf, &init, 8);
+	buf[8] = BRANCH_MAIN;
+	
+	err = ds_send_data(dev, buf, sizeof(buf));
+	if (err)
+		return err;
+	
+	ds_wait_status(dev, &st);
+
+	err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0);
+	if (err)
+		return err;
+
+	ds_wait_status(dev, &st);
+
+	return 0;
+}
+
+int ds_probe(struct usb_interface *intf, const struct usb_device_id *udev_id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct usb_endpoint_descriptor *endpoint;
+	struct usb_host_interface *iface_desc;
+	int i, err;
+
+	ds_dev = kmalloc(sizeof(struct ds_device), GFP_KERNEL);
+	if (!ds_dev) {
+		printk(KERN_INFO "Failed to allocate new DS9490R structure.\n");
+		return -ENOMEM;
+	}
+
+	ds_dev->udev = usb_get_dev(udev);
+	usb_set_intfdata(intf, ds_dev);
+
+	err = usb_set_interface(ds_dev->udev, intf->altsetting[0].desc.bInterfaceNumber, 3);
+	if (err) {
+		printk(KERN_ERR "Failed to set alternative setting 3 for %d interface: err=%d.\n",
+				intf->altsetting[0].desc.bInterfaceNumber, err);
+		return err;
+	}
+
+	err = usb_reset_configuration(ds_dev->udev);
+	if (err) {
+		printk(KERN_ERR "Failed to reset configuration: err=%d.\n", err);
+		return err;
+	}
+	
+	iface_desc = &intf->altsetting[0];
+	if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
+		printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints);
+		return -ENODEV;
+	}
+
+	atomic_set(&ds_dev->refcnt, 0);
+	memset(ds_dev->ep, 0, sizeof(ds_dev->ep));
+	
+	/*
+	 * This loop doesn'd show control 0 endpoint, 
+	 * so we will fill only 1-3 endpoints entry.
+	 */
+	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+		endpoint = &iface_desc->endpoint[i].desc;
+
+		ds_dev->ep[i+1] = endpoint->bEndpointAddress;
+		
+		printk("%d: addr=%x, size=%d, dir=%s, type=%x\n",
+			i, endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize),
+			(endpoint->bEndpointAddress & USB_DIR_IN)?"IN":"OUT",
+			endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
+	}
+	
+#if 0
+	{
+		int err, i;
+		u64 buf[3];
+		u64 init=0xb30000002078ee81ull;
+		struct ds_status st;
+		
+		ds_reset(ds_dev, &st);
+		err = ds_search(ds_dev, init, buf, 3, 0);
+		if (err < 0)
+			return err;
+		for (i=0; i<err; ++i)
+			printk("%d: %llx\n", i, buf[i]);
+		
+		printk("Resetting...\n");	
+		ds_reset(ds_dev, &st);
+		printk("Setting path for %llx.\n", init);
+		err = ds_set_path(ds_dev, init);
+		if (err)
+			return err;
+		printk("Calling MATCH_ACCESS.\n");
+		err = ds_match_access(ds_dev, init);
+		if (err)
+			return err;
+
+		printk("Searching the bus...\n");
+		err = ds_search(ds_dev, init, buf, 3, 0);
+
+		printk("ds_search() returned %d\n", err);
+		
+		if (err < 0)
+			return err;
+		for (i=0; i<err; ++i)
+			printk("%d: %llx\n", i, buf[i]);
+		
+		return 0;
+	}
+#endif
+
+	return 0;
+}
+
+void ds_disconnect(struct usb_interface *intf)
+{
+	struct ds_device *dev;
+	
+	dev = usb_get_intfdata(intf);
+	usb_set_intfdata(intf, NULL);
+
+	while (atomic_read(&dev->refcnt)) {
+		printk(KERN_INFO "Waiting for DS to become free: refcnt=%d.\n",
+				atomic_read(&dev->refcnt));
+
+		if (msleep_interruptible(1000))
+			flush_signals(current);
+	}
+
+	usb_put_dev(dev->udev);
+	kfree(dev);
+	ds_dev = NULL;
+}
+
+int ds_init(void)
+{
+	int err;
+
+	err = usb_register(&ds_driver);
+	if (err) {
+		printk(KERN_INFO "Failed to register DS9490R USB device: err=%d.\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+void ds_fini(void)
+{
+	usb_deregister(&ds_driver);
+}
+
+module_init(ds_init);
+module_exit(ds_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+
+EXPORT_SYMBOL(ds_touch_bit);
+EXPORT_SYMBOL(ds_read_byte);
+EXPORT_SYMBOL(ds_read_bit);
+EXPORT_SYMBOL(ds_read_block);
+EXPORT_SYMBOL(ds_write_byte);
+EXPORT_SYMBOL(ds_write_bit);
+EXPORT_SYMBOL(ds_write_block);
+EXPORT_SYMBOL(ds_reset);
+EXPORT_SYMBOL(ds_get_device);
+EXPORT_SYMBOL(ds_put_device);
+
+/*
+ * This functions can be used for EEPROM programming, 
+ * when driver will be included into mainline this will 
+ * require uncommenting.
+ */
+#if 0
+EXPORT_SYMBOL(ds_start_pulse);
+EXPORT_SYMBOL(ds_set_speed);
+EXPORT_SYMBOL(ds_detect);
+EXPORT_SYMBOL(ds_stop_pulse);
+EXPORT_SYMBOL(ds_search);
+#endif
diff --git a/drivers/w1/dscore.h b/drivers/w1/dscore.h
new file mode 100644
index 0000000..9c767ef
--- /dev/null
+++ b/drivers/w1/dscore.h
@@ -0,0 +1,170 @@
+/*
+ * 	dscore.h
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#ifndef __DSCORE_H
+#define __DSCORE_H
+
+#include <linux/usb.h>
+#include <asm/atomic.h>
+
+/* COMMAND TYPE CODES */
+#define CONTROL_CMD			0x00
+#define COMM_CMD			0x01
+#define MODE_CMD			0x02
+
+/* CONTROL COMMAND CODES */
+#define CTL_RESET_DEVICE		0x0000
+#define CTL_START_EXE			0x0001
+#define CTL_RESUME_EXE			0x0002
+#define CTL_HALT_EXE_IDLE		0x0003
+#define CTL_HALT_EXE_DONE		0x0004
+#define CTL_FLUSH_COMM_CMDS		0x0007
+#define CTL_FLUSH_RCV_BUFFER		0x0008
+#define CTL_FLUSH_XMT_BUFFER		0x0009
+#define CTL_GET_COMM_CMDS		0x000A
+
+/* MODE COMMAND CODES */
+#define MOD_PULSE_EN			0x0000
+#define MOD_SPEED_CHANGE_EN		0x0001
+#define MOD_1WIRE_SPEED			0x0002
+#define MOD_STRONG_PU_DURATION		0x0003
+#define MOD_PULLDOWN_SLEWRATE		0x0004
+#define MOD_PROG_PULSE_DURATION		0x0005
+#define MOD_WRITE1_LOWTIME		0x0006
+#define MOD_DSOW0_TREC			0x0007
+
+/* COMMUNICATION COMMAND CODES */
+#define COMM_ERROR_ESCAPE		0x0601
+#define COMM_SET_DURATION		0x0012
+#define COMM_BIT_IO			0x0020
+#define COMM_PULSE			0x0030
+#define COMM_1_WIRE_RESET		0x0042
+#define COMM_BYTE_IO			0x0052
+#define COMM_MATCH_ACCESS		0x0064
+#define COMM_BLOCK_IO			0x0074
+#define COMM_READ_STRAIGHT		0x0080
+#define COMM_DO_RELEASE			0x6092
+#define COMM_SET_PATH			0x00A2
+#define COMM_WRITE_SRAM_PAGE		0x00B2
+#define COMM_WRITE_EPROM		0x00C4
+#define COMM_READ_CRC_PROT_PAGE		0x00D4
+#define COMM_READ_REDIRECT_PAGE_CRC	0x21E4
+#define COMM_SEARCH_ACCESS		0x00F4
+
+/* Communication command bits */
+#define COMM_TYPE			0x0008
+#define COMM_SE				0x0008
+#define COMM_D				0x0008
+#define COMM_Z				0x0008
+#define COMM_CH				0x0008
+#define COMM_SM				0x0008
+#define COMM_R				0x0008
+#define COMM_IM				0x0001
+
+#define COMM_PS				0x4000
+#define COMM_PST			0x4000
+#define COMM_CIB			0x4000
+#define COMM_RTS			0x4000
+#define COMM_DT				0x2000
+#define COMM_SPU			0x1000
+#define COMM_F				0x0800
+#define COMM_NTP			0x0400
+#define COMM_ICP			0x0200
+#define COMM_RST			0x0100
+
+#define PULSE_PROG			0x01
+#define PULSE_SPUE			0x02
+
+#define BRANCH_MAIN			0xCC
+#define BRANCH_AUX			0x33
+
+/*
+ * Duration of the strong pull-up pulse in milliseconds.
+ */
+#define PULLUP_PULSE_DURATION		750
+
+/* Status flags */
+#define ST_SPUA				0x01  /* Strong Pull-up is active */
+#define ST_PRGA				0x02  /* 12V programming pulse is being generated */
+#define ST_12VP				0x04  /* external 12V programming voltage is present */
+#define ST_PMOD				0x08  /* DS2490 powered from USB and external sources */
+#define ST_HALT				0x10  /* DS2490 is currently halted */
+#define ST_IDLE				0x20  /* DS2490 is currently idle */
+#define ST_EPOF				0x80
+
+#define SPEED_NORMAL			0x00
+#define SPEED_FLEXIBLE			0x01
+#define SPEED_OVERDRIVE			0x02
+
+#define NUM_EP				4
+#define EP_CONTROL			0
+#define EP_STATUS			1
+#define EP_DATA_OUT			2
+#define EP_DATA_IN			3
+
+struct ds_device
+{
+	struct usb_device 	*udev;
+	struct usb_interface	*intf;
+
+	int			ep[NUM_EP];
+
+	atomic_t		refcnt;
+};
+
+struct ds_status
+{
+	u8			enable;
+	u8			speed;
+	u8			pullup_dur;
+	u8			ppuls_dur;
+	u8			pulldown_slew;
+	u8			write1_time;
+	u8			write0_time;
+	u8			reserved0;
+	u8			status;
+	u8			command0;
+	u8			command1;
+	u8			command_buffer_status;
+	u8			data_out_buffer_status;
+	u8			data_in_buffer_status;
+	u8			reserved1;
+	u8			reserved2;
+
+};
+
+int ds_touch_bit(struct ds_device *, u8, u8 *);
+int ds_read_byte(struct ds_device *, u8 *);
+int ds_read_bit(struct ds_device *, u8 *);
+int ds_write_byte(struct ds_device *, u8);
+int ds_write_bit(struct ds_device *, u8);
+int ds_start_pulse(struct ds_device *, int);
+int ds_set_speed(struct ds_device *, int);
+int ds_reset(struct ds_device *, struct ds_status *);
+int ds_detect(struct ds_device *, struct ds_status *);
+int ds_stop_pulse(struct ds_device *, int);
+struct ds_device * ds_get_device(void);
+void ds_put_device(struct ds_device *);
+int ds_write_block(struct ds_device *, u8 *, int);
+int ds_read_block(struct ds_device *, u8 *, int);
+
+#endif /* __DSCORE_H */
+
diff --git a/drivers/w1/matrox_w1.c b/drivers/w1/matrox_w1.c
new file mode 100644
index 0000000..e565416
--- /dev/null
+++ b/drivers/w1/matrox_w1.c
@@ -0,0 +1,247 @@
+/*
+ * 	matrox_w1.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <asm/atomic.h>
+#include <asm/types.h>
+#include <asm/io.h>
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/pci_ids.h>
+#include <linux/pci.h>
+#include <linux/timer.h>
+
+#include "w1.h"
+#include "w1_int.h"
+#include "w1_log.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for transport(Dallas 1-wire prtocol) over VGA DDC(matrox gpio).");
+
+static struct pci_device_id matrox_w1_tbl[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G400) },
+	{ },
+};
+MODULE_DEVICE_TABLE(pci, matrox_w1_tbl);
+
+static int __devinit matrox_w1_probe(struct pci_dev *, const struct pci_device_id *);
+static void __devexit matrox_w1_remove(struct pci_dev *);
+
+static struct pci_driver matrox_w1_pci_driver = {
+	.name = "matrox_w1",
+	.id_table = matrox_w1_tbl,
+	.probe = matrox_w1_probe,
+	.remove = __devexit_p(matrox_w1_remove),
+};
+
+/* 
+ * Matrox G400 DDC registers.
+ */
+
+#define MATROX_G400_DDC_CLK		(1<<4)
+#define MATROX_G400_DDC_DATA		(1<<1)
+
+#define MATROX_BASE			0x3C00
+#define MATROX_STATUS			0x1e14
+
+#define MATROX_PORT_INDEX_OFFSET	0x00
+#define MATROX_PORT_DATA_OFFSET		0x0A
+
+#define MATROX_GET_CONTROL		0x2A
+#define MATROX_GET_DATA			0x2B
+#define MATROX_CURSOR_CTL		0x06
+
+struct matrox_device
+{
+	void __iomem *base_addr;
+	void __iomem *port_index;
+	void __iomem *port_data;
+	u8 data_mask;
+
+	unsigned long phys_addr;
+	void __iomem *virt_addr;
+	unsigned long found;
+
+	struct w1_bus_master *bus_master;
+};
+
+static u8 matrox_w1_read_ddc_bit(unsigned long);
+static void matrox_w1_write_ddc_bit(unsigned long, u8);
+
+/*
+ * These functions read and write DDC Data bit.
+ *
+ * Using tristate pins, since i can't find any open-drain pin in whole motherboard.
+ * Unfortunately we can't connect to Intel's 82801xx IO controller
+ * since we don't know motherboard schema, wich has pretty unused(may be not) GPIO.
+ *
+ * I've heard that PIIX also has open drain pin.
+ *
+ * Port mapping.
+ */
+static __inline__ u8 matrox_w1_read_reg(struct matrox_device *dev, u8 reg)
+{
+	u8 ret;
+
+	writeb(reg, dev->port_index);
+	ret = readb(dev->port_data);
+	barrier();
+
+	return ret;
+}
+
+static __inline__ void matrox_w1_write_reg(struct matrox_device *dev, u8 reg, u8 val)
+{
+	writeb(reg, dev->port_index);
+	writeb(val, dev->port_data);
+	wmb();
+}
+
+static void matrox_w1_write_ddc_bit(unsigned long data, u8 bit)
+{
+	u8 ret;
+	struct matrox_device *dev = (struct matrox_device *) data;
+
+	if (bit)
+		bit = 0;
+	else
+		bit = dev->data_mask;
+
+	ret = matrox_w1_read_reg(dev, MATROX_GET_CONTROL);
+	matrox_w1_write_reg(dev, MATROX_GET_CONTROL, ((ret & ~dev->data_mask) | bit));
+	matrox_w1_write_reg(dev, MATROX_GET_DATA, 0x00);
+}
+
+static u8 matrox_w1_read_ddc_bit(unsigned long data)
+{
+	u8 ret;
+	struct matrox_device *dev = (struct matrox_device *) data;
+
+	ret = matrox_w1_read_reg(dev, MATROX_GET_DATA);
+
+	return ret;
+}
+
+static void matrox_w1_hw_init(struct matrox_device *dev)
+{
+	matrox_w1_write_reg(dev, MATROX_GET_DATA, 0xFF);
+	matrox_w1_write_reg(dev, MATROX_GET_CONTROL, 0x00);
+}
+
+static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct matrox_device *dev;
+	int err;
+
+	assert(pdev != NULL);
+	assert(ent != NULL);
+
+	if (pdev->vendor != PCI_VENDOR_ID_MATROX || pdev->device != PCI_DEVICE_ID_MATROX_G400)
+		return -ENODEV;
+
+	dev = kmalloc(sizeof(struct matrox_device) +
+		       sizeof(struct w1_bus_master), GFP_KERNEL);
+	if (!dev) {
+		dev_err(&pdev->dev,
+			"%s: Failed to create new matrox_device object.\n",
+			__func__);
+		return -ENOMEM;
+	}
+
+	memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
+
+	dev->bus_master = (struct w1_bus_master *)(dev + 1);
+
+	/* 
+	 * True for G400, for some other we need resource 0, see drivers/video/matrox/matroxfb_base.c 
+	 */
+
+	dev->phys_addr = pci_resource_start(pdev, 1);
+
+	dev->virt_addr = ioremap_nocache(dev->phys_addr, 16384);
+	if (!dev->virt_addr) {
+		dev_err(&pdev->dev, "%s: failed to ioremap(0x%lx, %d).\n",
+			__func__, dev->phys_addr, 16384);
+		err = -EIO;
+		goto err_out_free_device;
+	}
+
+	dev->base_addr = dev->virt_addr + MATROX_BASE;
+	dev->port_index = dev->base_addr + MATROX_PORT_INDEX_OFFSET;
+	dev->port_data = dev->base_addr + MATROX_PORT_DATA_OFFSET;
+	dev->data_mask = (MATROX_G400_DDC_DATA);
+
+	matrox_w1_hw_init(dev);
+
+	dev->bus_master->data = (unsigned long) dev;
+	dev->bus_master->read_bit = &matrox_w1_read_ddc_bit;
+	dev->bus_master->write_bit = &matrox_w1_write_ddc_bit;
+
+	err = w1_add_master_device(dev->bus_master);
+	if (err)
+		goto err_out_free_device;
+
+	pci_set_drvdata(pdev, dev);
+
+	dev->found = 1;
+
+	dev_info(&pdev->dev, "Matrox G400 GPIO transport layer for 1-wire.\n");
+
+	return 0;
+
+err_out_free_device:
+	kfree(dev);
+
+	return err;
+}
+
+static void __devexit matrox_w1_remove(struct pci_dev *pdev)
+{
+	struct matrox_device *dev = pci_get_drvdata(pdev);
+
+	assert(dev != NULL);
+
+	if (dev->found) {
+		w1_remove_master_device(dev->bus_master);
+		iounmap(dev->virt_addr);
+	}
+	kfree(dev);
+}
+
+static int __init matrox_w1_init(void)
+{
+	return pci_register_driver(&matrox_w1_pci_driver);
+}
+
+static void __exit matrox_w1_fini(void)
+{
+	pci_unregister_driver(&matrox_w1_pci_driver);
+}
+
+module_init(matrox_w1_init);
+module_exit(matrox_w1_fini);
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
new file mode 100644
index 0000000..fd630ce
--- /dev/null
+++ b/drivers/w1/w1.c
@@ -0,0 +1,835 @@
+/*
+ * 	w1.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+
+#include <asm/atomic.h>
+
+#include "w1.h"
+#include "w1_io.h"
+#include "w1_log.h"
+#include "w1_int.h"
+#include "w1_family.h"
+#include "w1_netlink.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol.");
+
+static int w1_timeout = 10;
+int w1_max_slave_count = 10;
+int w1_max_slave_ttl = 10;
+
+module_param_named(timeout, w1_timeout, int, 0);
+module_param_named(max_slave_count, w1_max_slave_count, int, 0);
+module_param_named(slave_ttl, w1_max_slave_ttl, int, 0);
+
+DEFINE_SPINLOCK(w1_mlock);
+LIST_HEAD(w1_masters);
+
+static pid_t control_thread;
+static int control_needs_exit;
+static DECLARE_COMPLETION(w1_control_complete);
+
+static int w1_master_match(struct device *dev, struct device_driver *drv)
+{
+	return 1;
+}
+
+static int w1_master_probe(struct device *dev)
+{
+	return -ENODEV;
+}
+
+static int w1_master_remove(struct device *dev)
+{
+	return 0;
+}
+
+static void w1_master_release(struct device *dev)
+{
+	struct w1_master *md = container_of(dev, struct w1_master, dev);
+
+	complete(&md->dev_released);
+}
+
+static void w1_slave_release(struct device *dev)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+
+	complete(&sl->dev_released);
+}
+
+static ssize_t w1_default_read_name(struct device *dev, char *buf)
+{
+	return sprintf(buf, "No family registered.\n");
+}
+
+static ssize_t w1_default_read_bin(struct kobject *kobj, char *buf, loff_t off,
+		     size_t count)
+{
+	return sprintf(buf, "No family registered.\n");
+}
+
+static struct bus_type w1_bus_type = {
+	.name = "w1",
+	.match = w1_master_match,
+};
+
+struct device_driver w1_driver = {
+	.name = "w1_driver",
+	.bus = &w1_bus_type,
+	.probe = w1_master_probe,
+	.remove = w1_master_remove,
+};
+
+struct device w1_device = {
+	.parent = NULL,
+	.bus = &w1_bus_type,
+	.bus_id = "w1 bus master",
+	.driver = &w1_driver,
+	.release = &w1_master_release
+};
+
+static struct device_attribute w1_slave_attribute = {
+	.attr = {
+			.name = "name",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_default_read_name,
+};
+
+static struct device_attribute w1_slave_attribute_val = {
+	.attr = {
+			.name = "value",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_default_read_name,
+};
+
+static ssize_t w1_master_attribute_show_name(struct device *dev, char *buf)
+{
+	struct w1_master *md = container_of (dev, struct w1_master, dev);
+	ssize_t count;
+	
+	if (down_interruptible (&md->mutex))
+		return -EBUSY;
+
+	count = sprintf(buf, "%s\n", md->name);
+	
+	up(&md->mutex);
+
+	return count;
+}
+
+static ssize_t w1_master_attribute_show_pointer(struct device *dev, char *buf)
+{
+	struct w1_master *md = container_of(dev, struct w1_master, dev);
+	ssize_t count;
+	
+	if (down_interruptible(&md->mutex))
+		return -EBUSY;
+
+	count = sprintf(buf, "0x%p\n", md->bus_master);
+	
+	up(&md->mutex);
+	return count;
+}
+
+static ssize_t w1_master_attribute_show_timeout(struct device *dev, char *buf)
+{
+	ssize_t count;
+	count = sprintf(buf, "%d\n", w1_timeout);
+	return count;
+}
+
+static ssize_t w1_master_attribute_show_max_slave_count(struct device *dev, char *buf)
+{
+	struct w1_master *md = container_of(dev, struct w1_master, dev);
+	ssize_t count;
+	
+	if (down_interruptible(&md->mutex))
+		return -EBUSY;
+
+	count = sprintf(buf, "%d\n", md->max_slave_count);
+	
+	up(&md->mutex);
+	return count;
+}
+
+static ssize_t w1_master_attribute_show_attempts(struct device *dev, char *buf)
+{
+	struct w1_master *md = container_of(dev, struct w1_master, dev);
+	ssize_t count;
+	
+	if (down_interruptible(&md->mutex))
+		return -EBUSY;
+
+	count = sprintf(buf, "%lu\n", md->attempts);
+	
+	up(&md->mutex);
+	return count;
+}
+
+static ssize_t w1_master_attribute_show_slave_count(struct device *dev, char *buf)
+{
+	struct w1_master *md = container_of(dev, struct w1_master, dev);
+	ssize_t count;
+	
+	if (down_interruptible(&md->mutex))
+		return -EBUSY;
+
+	count = sprintf(buf, "%d\n", md->slave_count);
+	
+	up(&md->mutex);
+	return count;
+}
+
+static ssize_t w1_master_attribute_show_slaves(struct device *dev, char *buf)
+
+{
+	struct w1_master *md = container_of(dev, struct w1_master, dev);
+	int c = PAGE_SIZE;
+
+	if (down_interruptible(&md->mutex))
+		return -EBUSY;
+
+	if (md->slave_count == 0)
+		c -= snprintf(buf + PAGE_SIZE - c, c, "not found.\n");
+	else {
+		struct list_head *ent, *n;
+		struct w1_slave *sl;
+
+		list_for_each_safe(ent, n, &md->slist) {
+			sl = list_entry(ent, struct w1_slave, w1_slave_entry);
+
+ 			c -= snprintf(buf + PAGE_SIZE - c, c, "%s\n", sl->name);
+		}
+	}
+
+	up(&md->mutex);
+
+	return PAGE_SIZE - c;
+}
+
+static struct device_attribute w1_master_attribute_slaves = {
+	.attr = {
+ 			.name = "w1_master_slaves",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE,
+	},
+ 	.show = &w1_master_attribute_show_slaves,
+};
+static struct device_attribute w1_master_attribute_slave_count = {
+	.attr = {
+			.name = "w1_master_slave_count",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_master_attribute_show_slave_count,
+};
+static struct device_attribute w1_master_attribute_attempts = {
+	.attr = {
+			.name = "w1_master_attempts",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_master_attribute_show_attempts,
+};
+static struct device_attribute w1_master_attribute_max_slave_count = {
+	.attr = {
+			.name = "w1_master_max_slave_count",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_master_attribute_show_max_slave_count,
+};
+static struct device_attribute w1_master_attribute_timeout = {
+	.attr = {
+			.name = "w1_master_timeout",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_master_attribute_show_timeout,
+};
+static struct device_attribute w1_master_attribute_pointer = {
+	.attr = {
+			.name = "w1_master_pointer",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_master_attribute_show_pointer,
+};
+static struct device_attribute w1_master_attribute_name = {
+	.attr = {
+			.name = "w1_master_name",
+			.mode = S_IRUGO,
+			.owner = THIS_MODULE
+	},
+	.show = &w1_master_attribute_show_name,
+};
+
+static struct bin_attribute w1_slave_bin_attribute = {
+	.attr = {
+		 	.name = "w1_slave",
+		 	.mode = S_IRUGO,
+			.owner = THIS_MODULE,
+	},
+	.size = W1_SLAVE_DATA_SIZE,
+	.read = &w1_default_read_bin,
+};
+
+static int __w1_attach_slave_device(struct w1_slave *sl)
+{
+	int err;
+
+	sl->dev.parent = &sl->master->dev;
+	sl->dev.driver = sl->master->driver;
+	sl->dev.bus = &w1_bus_type;
+	sl->dev.release = &w1_slave_release;
+
+	snprintf(&sl->dev.bus_id[0], sizeof(sl->dev.bus_id),
+		  "%02x-%012llx",
+		  (unsigned int) sl->reg_num.family,
+		  (unsigned long long) sl->reg_num.id);
+	snprintf (&sl->name[0], sizeof(sl->name),
+		  "%02x-%012llx",
+		  (unsigned int) sl->reg_num.family,
+		  (unsigned long long) sl->reg_num.id);
+
+	dev_dbg(&sl->dev, "%s: registering %s.\n", __func__,
+		&sl->dev.bus_id[0]);
+
+	err = device_register(&sl->dev);
+	if (err < 0) {
+		dev_err(&sl->dev,
+			 "Device registration [%s] failed. err=%d\n",
+			 sl->dev.bus_id, err);
+		return err;
+	}
+
+	memcpy(&sl->attr_bin, &w1_slave_bin_attribute, sizeof(sl->attr_bin));
+	memcpy(&sl->attr_name, &w1_slave_attribute, sizeof(sl->attr_name));
+	memcpy(&sl->attr_val, &w1_slave_attribute_val, sizeof(sl->attr_val));
+	
+	sl->attr_bin.read = sl->family->fops->rbin;
+	sl->attr_name.show = sl->family->fops->rname;
+	sl->attr_val.show = sl->family->fops->rval;
+	sl->attr_val.attr.name = sl->family->fops->rvalname;
+
+	err = device_create_file(&sl->dev, &sl->attr_name);
+	if (err < 0) {
+		dev_err(&sl->dev,
+			 "sysfs file creation for [%s] failed. err=%d\n",
+			 sl->dev.bus_id, err);
+		device_unregister(&sl->dev);
+		return err;
+	}
+
+	err = device_create_file(&sl->dev, &sl->attr_val);
+	if (err < 0) {
+		dev_err(&sl->dev,
+			 "sysfs file creation for [%s] failed. err=%d\n",
+			 sl->dev.bus_id, err);
+		device_remove_file(&sl->dev, &sl->attr_name);
+		device_unregister(&sl->dev);
+		return err;
+	}
+
+	err = sysfs_create_bin_file(&sl->dev.kobj, &sl->attr_bin);
+	if (err < 0) {
+		dev_err(&sl->dev,
+			 "sysfs file creation for [%s] failed. err=%d\n",
+			 sl->dev.bus_id, err);
+		device_remove_file(&sl->dev, &sl->attr_name);
+		device_remove_file(&sl->dev, &sl->attr_val);
+		device_unregister(&sl->dev);
+		return err;
+	}
+
+	list_add_tail(&sl->w1_slave_entry, &sl->master->slist);
+
+	return 0;
+}
+
+static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn)
+{
+	struct w1_slave *sl;
+	struct w1_family *f;
+	int err;
+	struct w1_netlink_msg msg;
+
+	sl = kmalloc(sizeof(struct w1_slave), GFP_KERNEL);
+	if (!sl) {
+		dev_err(&dev->dev,
+			 "%s: failed to allocate new slave device.\n",
+			 __func__);
+		return -ENOMEM;
+	}
+
+	memset(sl, 0, sizeof(*sl));
+
+	sl->owner = THIS_MODULE;
+	sl->master = dev;
+	set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
+
+	memcpy(&sl->reg_num, rn, sizeof(sl->reg_num));
+	atomic_set(&sl->refcnt, 0);
+	init_completion(&sl->dev_released);
+
+	spin_lock(&w1_flock);
+	f = w1_family_registered(rn->family);
+	if (!f) {
+		spin_unlock(&w1_flock);
+		dev_info(&dev->dev, "Family %x for %02x.%012llx.%02x is not registered.\n",
+			  rn->family, rn->family,
+			  (unsigned long long)rn->id, rn->crc);
+		kfree(sl);
+		return -ENODEV;
+	}
+	__w1_family_get(f);
+	spin_unlock(&w1_flock);
+
+	sl->family = f;
+
+
+	err = __w1_attach_slave_device(sl);
+	if (err < 0) {
+		dev_err(&dev->dev, "%s: Attaching %s failed.\n", __func__,
+			 sl->name);
+		w1_family_put(sl->family);
+		kfree(sl);
+		return err;
+	}
+
+	sl->ttl = dev->slave_ttl;
+	dev->slave_count++;
+
+	memcpy(&msg.id.id, rn, sizeof(msg.id.id));
+	msg.type = W1_SLAVE_ADD;
+	w1_netlink_send(dev, &msg);
+
+	return 0;
+}
+
+static void w1_slave_detach(struct w1_slave *sl)
+{
+	struct w1_netlink_msg msg;
+	
+	dev_info(&sl->dev, "%s: detaching %s.\n", __func__, sl->name);
+
+	while (atomic_read(&sl->refcnt)) {
+		printk(KERN_INFO "Waiting for %s to become free: refcnt=%d.\n",
+				sl->name, atomic_read(&sl->refcnt));
+
+		if (msleep_interruptible(1000))
+			flush_signals(current);
+	}
+
+	sysfs_remove_bin_file (&sl->dev.kobj, &sl->attr_bin);
+	device_remove_file(&sl->dev, &sl->attr_name);
+	device_remove_file(&sl->dev, &sl->attr_val);
+	device_unregister(&sl->dev);
+	w1_family_put(sl->family);
+
+	memcpy(&msg.id.id, &sl->reg_num, sizeof(msg.id.id));
+	msg.type = W1_SLAVE_REMOVE;
+	w1_netlink_send(sl->master, &msg);
+}
+
+static struct w1_master *w1_search_master(unsigned long data)
+{
+	struct w1_master *dev;
+	int found = 0;
+	
+	spin_lock_irq(&w1_mlock);
+	list_for_each_entry(dev, &w1_masters, w1_master_entry) {
+		if (dev->bus_master->data == data) {
+			found = 1;
+			atomic_inc(&dev->refcnt);
+			break;
+		}
+	}
+	spin_unlock_irq(&w1_mlock);
+
+	return (found)?dev:NULL;
+}
+
+void w1_slave_found(unsigned long data, u64 rn)
+{
+	int slave_count;
+	struct w1_slave *sl;
+	struct list_head *ent;
+	struct w1_reg_num *tmp;
+	int family_found = 0;
+	struct w1_master *dev;
+
+	dev = w1_search_master(data);
+	if (!dev) {
+		printk(KERN_ERR "Failed to find w1 master device for data %08lx, it is impossible.\n",
+				data);
+		return;
+	}
+	
+	tmp = (struct w1_reg_num *) &rn;
+
+	slave_count = 0;
+	list_for_each(ent, &dev->slist) {
+
+		sl = list_entry(ent, struct w1_slave, w1_slave_entry);
+
+		if (sl->reg_num.family == tmp->family &&
+		    sl->reg_num.id == tmp->id &&
+		    sl->reg_num.crc == tmp->crc) {
+			set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
+			break;
+		}
+		else if (sl->reg_num.family == tmp->family) {
+			family_found = 1;
+			break;
+		}
+
+		slave_count++;
+	}
+
+		if (slave_count == dev->slave_count && rn ) {
+			tmp = cpu_to_le64(rn);
+			if(((rn >> 56) & 0xff) == w1_calc_crc8((u8 *)&tmp, 7))
+				w1_attach_slave_device(dev, (struct w1_reg_num *) &rn);
+	}
+			
+	atomic_dec(&dev->refcnt);
+}
+
+void w1_search(struct w1_master *dev)
+{
+	u64 last, rn, tmp;
+	int i, count = 0;
+	int last_family_desc, last_zero, last_device;
+	int search_bit, id_bit, comp_bit, desc_bit;
+
+	search_bit = id_bit = comp_bit = 0;
+	rn = tmp = last = 0;
+	last_device = last_zero = last_family_desc = 0;
+
+	desc_bit = 64;
+
+	while (!(id_bit && comp_bit) && !last_device
+		&& count++ < dev->max_slave_count) {
+		last = rn;
+		rn = 0;
+
+		last_family_desc = 0;
+
+		/*
+		 * Reset bus and all 1-wire device state machines
+		 * so they can respond to our requests.
+		 *
+		 * Return 0 - device(s) present, 1 - no devices present.
+		 */
+		if (w1_reset_bus(dev)) {
+			dev_info(&dev->dev, "No devices present on the wire.\n");
+			break;
+		}
+
+#if 1
+		w1_write_8(dev, W1_SEARCH);
+		for (i = 0; i < 64; ++i) {
+			/*
+			 * Read 2 bits from bus.
+			 * All who don't sleep must send ID bit and COMPLEMENT ID bit.
+			 * They actually are ANDed between all senders.
+			 */
+			id_bit = w1_touch_bit(dev, 1);
+			comp_bit = w1_touch_bit(dev, 1);
+
+			if (id_bit && comp_bit)
+				break;
+
+			if (id_bit == 0 && comp_bit == 0) {
+				if (i == desc_bit)
+					search_bit = 1;
+				else if (i > desc_bit)
+					search_bit = 0;
+				else
+					search_bit = ((last >> i) & 0x1);
+
+				if (search_bit == 0) {
+					last_zero = i;
+					if (last_zero < 9)
+						last_family_desc = last_zero;
+				}
+
+			}
+			else
+				search_bit = id_bit;
+
+			tmp = search_bit;
+			rn |= (tmp << i);
+
+			/*
+			 * Write 1 bit to bus
+			 * and make all who don't have "search_bit" in "i"'th position
+			 * in it's registration number sleep.
+			 */
+			if (dev->bus_master->touch_bit)
+				w1_touch_bit(dev, search_bit);
+			else
+				w1_write_bit(dev, search_bit);
+
+		}
+#endif
+
+		if (desc_bit == last_zero)
+			last_device = 1;
+
+		desc_bit = last_zero;
+	
+		w1_slave_found(dev->bus_master->data, rn);
+	}
+}
+
+int w1_create_master_attributes(struct w1_master *dev)
+{
+	if (	device_create_file(&dev->dev, &w1_master_attribute_slaves) < 0 ||
+		device_create_file(&dev->dev, &w1_master_attribute_slave_count) < 0 ||
+		device_create_file(&dev->dev, &w1_master_attribute_attempts) < 0 ||
+		device_create_file(&dev->dev, &w1_master_attribute_max_slave_count) < 0 ||
+		device_create_file(&dev->dev, &w1_master_attribute_timeout) < 0||
+		device_create_file(&dev->dev, &w1_master_attribute_pointer) < 0||
+		device_create_file(&dev->dev, &w1_master_attribute_name) < 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+void w1_destroy_master_attributes(struct w1_master *dev)
+{
+	device_remove_file(&dev->dev, &w1_master_attribute_slaves);
+	device_remove_file(&dev->dev, &w1_master_attribute_slave_count);
+	device_remove_file(&dev->dev, &w1_master_attribute_attempts);
+	device_remove_file(&dev->dev, &w1_master_attribute_max_slave_count);
+	device_remove_file(&dev->dev, &w1_master_attribute_timeout);
+	device_remove_file(&dev->dev, &w1_master_attribute_pointer);
+	device_remove_file(&dev->dev, &w1_master_attribute_name);
+}
+
+
+int w1_control(void *data)
+{
+	struct w1_slave *sl;
+	struct w1_master *dev;
+	struct list_head *ent, *ment, *n, *mn;
+	int err, have_to_wait = 0;
+
+	daemonize("w1_control");
+	allow_signal(SIGTERM);
+
+	while (!control_needs_exit || have_to_wait) {
+		have_to_wait = 0;
+
+		try_to_freeze(PF_FREEZE);
+		msleep_interruptible(w1_timeout * 1000);
+
+		if (signal_pending(current))
+			flush_signals(current);
+
+		list_for_each_safe(ment, mn, &w1_masters) {
+			dev = list_entry(ment, struct w1_master, w1_master_entry);
+
+			if (!control_needs_exit && !dev->need_exit)
+				continue;
+			/*
+			 * Little race: we can create thread but not set the flag.
+			 * Get a chance for external process to set flag up.
+			 */
+			if (!dev->initialized) {
+				have_to_wait = 1;
+				continue;
+			}
+
+			spin_lock(&w1_mlock);
+			list_del(&dev->w1_master_entry);
+			spin_unlock(&w1_mlock);
+
+			if (control_needs_exit) {
+				dev->need_exit = 1;
+
+				err = kill_proc(dev->kpid, SIGTERM, 1);
+				if (err)
+					dev_err(&dev->dev,
+						 "Failed to send signal to w1 kernel thread %d.\n",
+						 dev->kpid);
+			}
+
+			wait_for_completion(&dev->dev_exited);
+
+			list_for_each_safe(ent, n, &dev->slist) {
+				sl = list_entry(ent, struct w1_slave, w1_slave_entry);
+
+				if (!sl)
+					dev_warn(&dev->dev,
+						  "%s: slave entry is NULL.\n",
+						  __func__);
+				else {
+					list_del(&sl->w1_slave_entry);
+
+					w1_slave_detach(sl);
+					kfree(sl);
+				}
+			}
+			w1_destroy_master_attributes(dev);
+			atomic_dec(&dev->refcnt);
+		}
+	}
+
+	complete_and_exit(&w1_control_complete, 0);
+}
+
+int w1_process(void *data)
+{
+	struct w1_master *dev = (struct w1_master *) data;
+	struct list_head *ent, *n;
+	struct w1_slave *sl;
+
+	daemonize("%s", dev->name);
+	allow_signal(SIGTERM);
+
+	while (!dev->need_exit) {
+		try_to_freeze(PF_FREEZE);
+		msleep_interruptible(w1_timeout * 1000);
+
+		if (signal_pending(current))
+			flush_signals(current);
+
+		if (dev->need_exit)
+			break;
+
+		if (!dev->initialized)
+			continue;
+
+		if (down_interruptible(&dev->mutex))
+			continue;
+
+		list_for_each_safe(ent, n, &dev->slist) {
+			sl = list_entry(ent, struct w1_slave, w1_slave_entry);
+
+			if (sl)
+				clear_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
+		}
+		
+		w1_search_devices(dev, w1_slave_found);
+
+		list_for_each_safe(ent, n, &dev->slist) {
+			sl = list_entry(ent, struct w1_slave, w1_slave_entry);
+
+			if (sl && !test_bit(W1_SLAVE_ACTIVE, (unsigned long *)&sl->flags) && !--sl->ttl) {
+				list_del (&sl->w1_slave_entry);
+
+				w1_slave_detach (sl);
+				kfree (sl);
+
+				dev->slave_count--;
+			}
+			else if (test_bit(W1_SLAVE_ACTIVE, (unsigned long *)&sl->flags))
+				sl->ttl = dev->slave_ttl;
+		}
+		up(&dev->mutex);
+	}
+
+	atomic_dec(&dev->refcnt);
+	complete_and_exit(&dev->dev_exited, 0);
+
+	return 0;
+}
+
+int w1_init(void)
+{
+	int retval;
+
+	printk(KERN_INFO "Driver for 1-wire Dallas network protocol.\n");
+
+	retval = bus_register(&w1_bus_type);
+	if (retval) {
+		printk(KERN_ERR "Failed to register bus. err=%d.\n", retval);
+		goto err_out_exit_init;
+	}
+
+	retval = driver_register(&w1_driver);
+	if (retval) {
+		printk(KERN_ERR
+			"Failed to register master driver. err=%d.\n",
+			retval);
+		goto err_out_bus_unregister;
+	}
+
+	control_thread = kernel_thread(&w1_control, NULL, 0);
+	if (control_thread < 0) {
+		printk(KERN_ERR "Failed to create control thread. err=%d\n",
+			control_thread);
+		retval = control_thread;
+		goto err_out_driver_unregister;
+	}
+
+	return 0;
+
+err_out_driver_unregister:
+	driver_unregister(&w1_driver);
+
+err_out_bus_unregister:
+	bus_unregister(&w1_bus_type);
+
+err_out_exit_init:
+	return retval;
+}
+
+void w1_fini(void)
+{
+	struct w1_master *dev;
+	struct list_head *ent, *n;
+
+	list_for_each_safe(ent, n, &w1_masters) {
+		dev = list_entry(ent, struct w1_master, w1_master_entry);
+		__w1_remove_master_device(dev);
+	}
+
+	control_needs_exit = 1;
+
+	wait_for_completion(&w1_control_complete);
+
+	driver_unregister(&w1_driver);
+	bus_unregister(&w1_bus_type);
+}
+
+module_init(w1_init);
+module_exit(w1_fini);
diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h
new file mode 100644
index 0000000..abbddaf
--- /dev/null
+++ b/drivers/w1/w1.h
@@ -0,0 +1,145 @@
+/*
+ * 	w1.h
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#ifndef __W1_H
+#define __W1_H
+
+struct w1_reg_num
+{
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	__u64	family:8,
+		id:48,
+		crc:8;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	__u64	crc:8,
+		id:48,
+		family:8;
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+};
+
+#ifdef __KERNEL__
+
+#include <linux/completion.h>
+#include <linux/device.h>
+
+#include <net/sock.h>
+
+#include <asm/semaphore.h>
+
+#include "w1_family.h"
+
+#define W1_MAXNAMELEN		32
+#define W1_SLAVE_DATA_SIZE	128
+
+#define W1_SEARCH		0xF0
+#define W1_CONDITIONAL_SEARCH	0xEC
+#define W1_CONVERT_TEMP		0x44
+#define W1_SKIP_ROM		0xCC
+#define W1_READ_SCRATCHPAD	0xBE
+#define W1_READ_ROM		0x33
+#define W1_READ_PSUPPLY		0xB4
+#define W1_MATCH_ROM		0x55
+
+#define W1_SLAVE_ACTIVE		(1<<0)
+
+struct w1_slave
+{
+	struct module		*owner;
+	unsigned char		name[W1_MAXNAMELEN];
+	struct list_head	w1_slave_entry;
+	struct w1_reg_num	reg_num;
+	atomic_t		refcnt;
+	u8			rom[9];
+	u32			flags;
+	int			ttl;
+
+	struct w1_master	*master;
+	struct w1_family 	*family;
+	struct device 		dev;
+	struct completion 	dev_released;
+
+	struct bin_attribute 	attr_bin;
+	struct device_attribute	attr_name, attr_val;
+};
+
+typedef void (* w1_slave_found_callback)(unsigned long, u64);
+
+struct w1_bus_master
+{
+	unsigned long		data;
+
+	u8			(*read_bit)(unsigned long);
+	void			(*write_bit)(unsigned long, u8);
+  	
+	u8			(*read_byte)(unsigned long);
+  	void			(*write_byte)(unsigned long, u8);
+  	
+	u8			(*read_block)(unsigned long, u8 *, int);
+	void			(*write_block)(unsigned long, u8 *, int);
+	
+  	u8			(*touch_bit)(unsigned long, u8);
+  
+  	u8			(*reset_bus)(unsigned long);
+
+	void			(*search)(unsigned long, w1_slave_found_callback);
+};
+
+struct w1_master
+{
+	struct list_head	w1_master_entry;
+	struct module		*owner;
+	unsigned char		name[W1_MAXNAMELEN];
+	struct list_head	slist;
+	int			max_slave_count, slave_count;
+	unsigned long		attempts;
+	int			slave_ttl;
+	int			initialized;
+	u32			id;
+
+	atomic_t		refcnt;
+
+	void			*priv;
+	int			priv_size;
+
+	int			need_exit;
+	pid_t			kpid;
+	struct semaphore 	mutex;
+
+	struct device_driver	*driver;
+	struct device 		dev;
+	struct completion 	dev_released;
+	struct completion 	dev_exited;
+
+	struct w1_bus_master	*bus_master;
+
+	u32			seq, groups;
+	struct sock 		*nls;
+};
+
+int w1_create_master_attributes(struct w1_master *);
+void w1_destroy_master_attributes(struct w1_master *);
+void w1_search(struct w1_master *dev);
+
+#endif /* __KERNEL__ */
+
+#endif /* __W1_H */
diff --git a/drivers/w1/w1_family.c b/drivers/w1/w1_family.c
new file mode 100644
index 0000000..d1d56ec
--- /dev/null
+++ b/drivers/w1/w1_family.c
@@ -0,0 +1,150 @@
+/*
+ * 	w1_family.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+
+#include "w1_family.h"
+
+DEFINE_SPINLOCK(w1_flock);
+static LIST_HEAD(w1_families);
+
+static int w1_check_family(struct w1_family *f)
+{
+	if (!f->fops->rname || !f->fops->rbin || !f->fops->rval || !f->fops->rvalname)
+		return -EINVAL;
+
+	return 0;
+}
+
+int w1_register_family(struct w1_family *newf)
+{
+	struct list_head *ent, *n;
+	struct w1_family *f;
+	int ret = 0;
+
+	if (w1_check_family(newf))
+		return -EINVAL;
+
+	spin_lock(&w1_flock);
+	list_for_each_safe(ent, n, &w1_families) {
+		f = list_entry(ent, struct w1_family, family_entry);
+
+		if (f->fid == newf->fid) {
+			ret = -EEXIST;
+			break;
+		}
+	}
+
+	if (!ret) {
+		atomic_set(&newf->refcnt, 0);
+		newf->need_exit = 0;
+		list_add_tail(&newf->family_entry, &w1_families);
+	}
+
+	spin_unlock(&w1_flock);
+
+	return ret;
+}
+
+void w1_unregister_family(struct w1_family *fent)
+{
+	struct list_head *ent, *n;
+	struct w1_family *f;
+
+	spin_lock(&w1_flock);
+	list_for_each_safe(ent, n, &w1_families) {
+		f = list_entry(ent, struct w1_family, family_entry);
+
+		if (f->fid == fent->fid) {
+			list_del(&fent->family_entry);
+			break;
+		}
+	}
+
+	fent->need_exit = 1;
+
+	spin_unlock(&w1_flock);
+
+	while (atomic_read(&fent->refcnt)) {
+		printk(KERN_INFO "Waiting for family %u to become free: refcnt=%d.\n",
+				fent->fid, atomic_read(&fent->refcnt));
+
+		if (msleep_interruptible(1000))
+			flush_signals(current);
+	}
+}
+
+/*
+ * Should be called under w1_flock held.
+ */
+struct w1_family * w1_family_registered(u8 fid)
+{
+	struct list_head *ent, *n;
+	struct w1_family *f = NULL;
+	int ret = 0;
+
+	list_for_each_safe(ent, n, &w1_families) {
+		f = list_entry(ent, struct w1_family, family_entry);
+
+		if (f->fid == fid) {
+			ret = 1;
+			break;
+		}
+	}
+
+	return (ret) ? f : NULL;
+}
+
+void w1_family_put(struct w1_family *f)
+{
+	spin_lock(&w1_flock);
+	__w1_family_put(f);
+	spin_unlock(&w1_flock);
+}
+
+void __w1_family_put(struct w1_family *f)
+{
+	if (atomic_dec_and_test(&f->refcnt))
+		f->need_exit = 1;
+}
+
+void w1_family_get(struct w1_family *f)
+{
+	spin_lock(&w1_flock);
+	__w1_family_get(f);
+	spin_unlock(&w1_flock);
+
+}
+
+void __w1_family_get(struct w1_family *f)
+{
+	smp_mb__before_atomic_inc();
+	atomic_inc(&f->refcnt);
+	smp_mb__after_atomic_inc();
+}
+
+EXPORT_SYMBOL(w1_family_get);
+EXPORT_SYMBOL(w1_family_put);
+EXPORT_SYMBOL(w1_family_registered);
+EXPORT_SYMBOL(w1_unregister_family);
+EXPORT_SYMBOL(w1_register_family);
diff --git a/drivers/w1/w1_family.h b/drivers/w1/w1_family.h
new file mode 100644
index 0000000..03a2de7
--- /dev/null
+++ b/drivers/w1/w1_family.h
@@ -0,0 +1,65 @@
+/*
+ * 	w1_family.h
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#ifndef __W1_FAMILY_H
+#define __W1_FAMILY_H
+
+#include <linux/types.h>
+#include <linux/device.h>
+#include <asm/atomic.h>
+
+#define W1_FAMILY_DEFAULT	0
+#define W1_FAMILY_THERM		0x10
+#define W1_FAMILY_SMEM		0x01
+
+#define MAXNAMELEN		32
+
+struct w1_family_ops
+{
+	ssize_t (* rname)(struct device *, char *);
+	ssize_t (* rbin)(struct kobject *, char *, loff_t, size_t);
+	
+	ssize_t (* rval)(struct device *, char *);
+	unsigned char rvalname[MAXNAMELEN];
+};
+
+struct w1_family
+{
+	struct list_head	family_entry;
+	u8			fid;
+	
+	struct w1_family_ops	*fops;
+	
+	atomic_t		refcnt;
+	u8			need_exit;
+};
+
+extern spinlock_t w1_flock;
+
+void w1_family_get(struct w1_family *);
+void w1_family_put(struct w1_family *);
+void __w1_family_get(struct w1_family *);
+void __w1_family_put(struct w1_family *);
+struct w1_family * w1_family_registered(u8);
+void w1_unregister_family(struct w1_family *);
+int w1_register_family(struct w1_family *);
+
+#endif /* __W1_FAMILY_H */
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
new file mode 100644
index 0000000..5f0bafb
--- /dev/null
+++ b/drivers/w1/w1_int.c
@@ -0,0 +1,220 @@
+/*
+ * 	w1_int.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+
+#include "w1.h"
+#include "w1_log.h"
+#include "w1_netlink.h"
+
+static u32 w1_ids = 1;
+
+extern struct device_driver w1_driver;
+extern struct bus_type w1_bus_type;
+extern struct device w1_device;
+extern int w1_max_slave_count;
+extern int w1_max_slave_ttl;
+extern struct list_head w1_masters;
+extern spinlock_t w1_mlock;
+
+extern int w1_process(void *);
+
+struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
+	      struct device_driver *driver, struct device *device)
+{
+	struct w1_master *dev;
+	int err;
+
+	/*
+	 * We are in process context(kernel thread), so can sleep.
+	 */
+	dev = kmalloc(sizeof(struct w1_master) + sizeof(struct w1_bus_master), GFP_KERNEL);
+	if (!dev) {
+		printk(KERN_ERR
+			"Failed to allocate %zd bytes for new w1 device.\n",
+			sizeof(struct w1_master));
+		return NULL;
+	}
+
+	memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
+
+	dev->bus_master = (struct w1_bus_master *)(dev + 1);
+
+	dev->owner 		= THIS_MODULE;
+	dev->max_slave_count 	= slave_count;
+	dev->slave_count 	= 0;
+	dev->attempts 		= 0;
+	dev->kpid 		= -1;
+	dev->initialized 	= 0;
+	dev->id 		= id;
+	dev->slave_ttl		= slave_ttl;
+
+	atomic_set(&dev->refcnt, 2);
+
+	INIT_LIST_HEAD(&dev->slist);
+	init_MUTEX(&dev->mutex);
+
+	init_completion(&dev->dev_released);
+	init_completion(&dev->dev_exited);
+
+	memcpy(&dev->dev, device, sizeof(struct device));
+	snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id),
+		  "w1_bus_master%u", dev->id);
+	snprintf(dev->name, sizeof(dev->name), "w1_bus_master%u", dev->id);
+
+	dev->driver = driver;
+
+	dev->groups = 23;
+	dev->seq = 1;
+	dev->nls = netlink_kernel_create(NETLINK_NFLOG, NULL);
+	if (!dev->nls) {
+		printk(KERN_ERR "Failed to create new netlink socket(%u) for w1 master %s.\n",
+			NETLINK_NFLOG, dev->dev.bus_id);
+	}
+
+	err = device_register(&dev->dev);
+	if (err) {
+		printk(KERN_ERR "Failed to register master device. err=%d\n", err);
+		if (dev->nls && dev->nls->sk_socket)
+			sock_release(dev->nls->sk_socket);
+		memset(dev, 0, sizeof(struct w1_master));
+		kfree(dev);
+		dev = NULL;
+	}
+
+	return dev;
+}
+
+void w1_free_dev(struct w1_master *dev)
+{
+	device_unregister(&dev->dev);
+	if (dev->nls && dev->nls->sk_socket)
+		sock_release(dev->nls->sk_socket);
+	memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
+	kfree(dev);
+}
+
+int w1_add_master_device(struct w1_bus_master *master)
+{
+	struct w1_master *dev;
+	int retval = 0;
+	struct w1_netlink_msg msg;
+
+	dev = w1_alloc_dev(w1_ids++, w1_max_slave_count, w1_max_slave_ttl, &w1_driver, &w1_device);
+	if (!dev)
+		return -ENOMEM;
+
+	dev->kpid = kernel_thread(&w1_process, dev, 0);
+	if (dev->kpid < 0) {
+		dev_err(&dev->dev,
+			 "Failed to create new kernel thread. err=%d\n",
+			 dev->kpid);
+		retval = dev->kpid;
+		goto err_out_free_dev;
+	}
+
+	retval =  w1_create_master_attributes(dev);
+	if (retval)
+		goto err_out_kill_thread;
+
+	memcpy(dev->bus_master, master, sizeof(struct w1_bus_master));
+
+	dev->initialized = 1;
+
+	spin_lock(&w1_mlock);
+	list_add(&dev->w1_master_entry, &w1_masters);
+	spin_unlock(&w1_mlock);
+
+	msg.id.mst.id = dev->id;
+	msg.id.mst.pid = dev->kpid;
+	msg.type = W1_MASTER_ADD;
+	w1_netlink_send(dev, &msg);
+
+	return 0;
+
+err_out_kill_thread:
+	dev->need_exit = 1;
+	if (kill_proc(dev->kpid, SIGTERM, 1))
+		dev_err(&dev->dev,
+			 "Failed to send signal to w1 kernel thread %d.\n",
+			 dev->kpid);
+	wait_for_completion(&dev->dev_exited);
+
+err_out_free_dev:
+	w1_free_dev(dev);
+
+	return retval;
+}
+
+void __w1_remove_master_device(struct w1_master *dev)
+{
+	int err;
+	struct w1_netlink_msg msg;
+
+	dev->need_exit = 1;
+	err = kill_proc(dev->kpid, SIGTERM, 1);
+	if (err)
+		dev_err(&dev->dev,
+			 "%s: Failed to send signal to w1 kernel thread %d.\n",
+			 __func__, dev->kpid);
+
+	while (atomic_read(&dev->refcnt)) {
+		printk(KERN_INFO "Waiting for %s to become free: refcnt=%d.\n",
+				dev->name, atomic_read(&dev->refcnt));
+
+		if (msleep_interruptible(1000))
+			flush_signals(current);
+	}
+
+	msg.id.mst.id = dev->id;
+	msg.id.mst.pid = dev->kpid;
+	msg.type = W1_MASTER_REMOVE;
+	w1_netlink_send(dev, &msg);
+
+	w1_free_dev(dev);
+}
+
+void w1_remove_master_device(struct w1_bus_master *bm)
+{
+	struct w1_master *dev = NULL;
+	struct list_head *ent, *n;
+
+	list_for_each_safe(ent, n, &w1_masters) {
+		dev = list_entry(ent, struct w1_master, w1_master_entry);
+		if (!dev->initialized)
+			continue;
+
+		if (dev->bus_master->data == bm->data)
+			break;
+	}
+
+	if (!dev) {
+		printk(KERN_ERR "Device doesn't exist.\n");
+		return;
+	}
+
+	__w1_remove_master_device(dev);
+}
+
+EXPORT_SYMBOL(w1_add_master_device);
+EXPORT_SYMBOL(w1_remove_master_device);
diff --git a/drivers/w1/w1_int.h b/drivers/w1/w1_int.h
new file mode 100644
index 0000000..fdb531e
--- /dev/null
+++ b/drivers/w1/w1_int.h
@@ -0,0 +1,36 @@
+/*
+ * 	w1_int.h
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#ifndef __W1_INT_H
+#define __W1_INT_H
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+
+#include "w1.h"
+
+struct w1_master * w1_alloc_dev(u32, int, int, struct device_driver *, struct device *);
+void w1_free_dev(struct w1_master *dev);
+int w1_add_master_device(struct w1_bus_master *);
+void w1_remove_master_device(struct w1_bus_master *);
+void __w1_remove_master_device(struct w1_master *);
+
+#endif /* __W1_INT_H */
diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c
new file mode 100644
index 0000000..02796b5
--- /dev/null
+++ b/drivers/w1/w1_io.c
@@ -0,0 +1,195 @@
+/*
+ * 	w1_io.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#include <asm/io.h>
+
+#include <linux/delay.h>
+#include <linux/moduleparam.h>
+
+#include "w1.h"
+#include "w1_log.h"
+#include "w1_io.h"
+
+int w1_delay_parm = 1;
+module_param_named(delay_coef, w1_delay_parm, int, 0);
+
+static u8 w1_crc8_table[] = {
+	0, 94, 188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65,
+	157, 195, 33, 127, 252, 162, 64, 30, 95, 1, 227, 189, 62, 96, 130, 220,
+	35, 125, 159, 193, 66, 28, 254, 160, 225, 191, 93, 3, 128, 222, 60, 98,
+	190, 224, 2, 92, 223, 129, 99, 61, 124, 34, 192, 158, 29, 67, 161, 255,
+	70, 24, 250, 164, 39, 121, 155, 197, 132, 218, 56, 102, 229, 187, 89, 7,
+	219, 133, 103, 57, 186, 228, 6, 88, 25, 71, 165, 251, 120, 38, 196, 154,
+	101, 59, 217, 135, 4, 90, 184, 230, 167, 249, 27, 69, 198, 152, 122, 36,
+	248, 166, 68, 26, 153, 199, 37, 123, 58, 100, 134, 216, 91, 5, 231, 185,
+	140, 210, 48, 110, 237, 179, 81, 15, 78, 16, 242, 172, 47, 113, 147, 205,
+	17, 79, 173, 243, 112, 46, 204, 146, 211, 141, 111, 49, 178, 236, 14, 80,
+	175, 241, 19, 77, 206, 144, 114, 44, 109, 51, 209, 143, 12, 82, 176, 238,
+	50, 108, 142, 208, 83, 13, 239, 177, 240, 174, 76, 18, 145, 207, 45, 115,
+	202, 148, 118, 40, 171, 245, 23, 73, 8, 86, 180, 234, 105, 55, 213, 139,
+	87, 9, 235, 181, 54, 104, 138, 212, 149, 203, 41, 119, 244, 170, 72, 22,
+	233, 183, 85, 11, 136, 214, 52, 106, 43, 117, 151, 201, 74, 20, 246, 168,
+	116, 42, 200, 150, 21, 75, 169, 247, 182, 232, 10, 84, 215, 137, 107, 53
+};
+
+void w1_delay(unsigned long tm)
+{
+	udelay(tm * w1_delay_parm);
+}
+
+u8 w1_touch_bit(struct w1_master *dev, int bit)
+{
+	if (dev->bus_master->touch_bit)
+		return dev->bus_master->touch_bit(dev->bus_master->data, bit);
+	else
+		return w1_read_bit(dev);
+}
+
+void w1_write_bit(struct w1_master *dev, int bit)
+{
+	if (bit) {
+		dev->bus_master->write_bit(dev->bus_master->data, 0);
+		w1_delay(6);
+		dev->bus_master->write_bit(dev->bus_master->data, 1);
+		w1_delay(64);
+	} else {
+		dev->bus_master->write_bit(dev->bus_master->data, 0);
+		w1_delay(60);
+		dev->bus_master->write_bit(dev->bus_master->data, 1);
+		w1_delay(10);
+	}
+}
+
+void w1_write_8(struct w1_master *dev, u8 byte)
+{
+	int i;
+
+	if (dev->bus_master->write_byte)
+		dev->bus_master->write_byte(dev->bus_master->data, byte);
+	else
+		for (i = 0; i < 8; ++i)
+			w1_write_bit(dev, (byte >> i) & 0x1);
+}
+
+u8 w1_read_bit(struct w1_master *dev)
+{
+	int result;
+
+	dev->bus_master->write_bit(dev->bus_master->data, 0);
+	w1_delay(6);
+	dev->bus_master->write_bit(dev->bus_master->data, 1);
+	w1_delay(9);
+
+	result = dev->bus_master->read_bit(dev->bus_master->data);
+	w1_delay(55);
+
+	return result & 0x1;
+}
+
+u8 w1_read_8(struct w1_master * dev)
+{
+	int i;
+	u8 res = 0;
+
+	if (dev->bus_master->read_byte)
+		res = dev->bus_master->read_byte(dev->bus_master->data);
+	else
+		for (i = 0; i < 8; ++i)
+			res |= (w1_read_bit(dev) << i);
+
+	return res;
+}
+
+void w1_write_block(struct w1_master *dev, u8 *buf, int len)
+{
+	int i;
+
+	if (dev->bus_master->write_block)
+		dev->bus_master->write_block(dev->bus_master->data, buf, len);
+	else
+		for (i = 0; i < len; ++i)
+			w1_write_8(dev, buf[i]);
+}
+
+u8 w1_read_block(struct w1_master *dev, u8 *buf, int len)
+{
+	int i;
+	u8 ret;
+
+	if (dev->bus_master->read_block)
+		ret = dev->bus_master->read_block(dev->bus_master->data, buf, len);
+	else {
+		for (i = 0; i < len; ++i)
+			buf[i] = w1_read_8(dev);
+		ret = len;
+	}
+
+	return ret;
+}
+
+int w1_reset_bus(struct w1_master *dev)
+{
+	int result = 0;
+
+	if (dev->bus_master->reset_bus)
+		result = dev->bus_master->reset_bus(dev->bus_master->data) & 0x1;
+	else {
+		dev->bus_master->write_bit(dev->bus_master->data, 0);
+		w1_delay(480);
+		dev->bus_master->write_bit(dev->bus_master->data, 1);
+		w1_delay(70);
+
+		result = dev->bus_master->read_bit(dev->bus_master->data) & 0x1;
+		w1_delay(410);
+	}
+
+	return result;
+}
+
+u8 w1_calc_crc8(u8 * data, int len)
+{
+	u8 crc = 0;
+
+	while (len--)
+		crc = w1_crc8_table[crc ^ *data++];
+
+	return crc;
+}
+
+void w1_search_devices(struct w1_master *dev, w1_slave_found_callback cb)
+{
+	dev->attempts++;
+	if (dev->bus_master->search)
+		dev->bus_master->search(dev->bus_master->data, cb);
+	else
+		w1_search(dev);
+}
+
+EXPORT_SYMBOL(w1_write_bit);
+EXPORT_SYMBOL(w1_write_8);
+EXPORT_SYMBOL(w1_read_bit);
+EXPORT_SYMBOL(w1_read_8);
+EXPORT_SYMBOL(w1_reset_bus);
+EXPORT_SYMBOL(w1_calc_crc8);
+EXPORT_SYMBOL(w1_delay);
+EXPORT_SYMBOL(w1_read_block);
+EXPORT_SYMBOL(w1_write_block);
+EXPORT_SYMBOL(w1_search_devices);
diff --git a/drivers/w1/w1_io.h b/drivers/w1/w1_io.h
new file mode 100644
index 0000000..6c57300
--- /dev/null
+++ b/drivers/w1/w1_io.h
@@ -0,0 +1,39 @@
+/*
+ * 	w1_io.h
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#ifndef __W1_IO_H
+#define __W1_IO_H
+
+#include "w1.h"
+
+void w1_delay(unsigned long);
+u8 w1_touch_bit(struct w1_master *, int);
+void w1_write_bit(struct w1_master *, int);
+void w1_write_8(struct w1_master *, u8);
+u8 w1_read_bit(struct w1_master *);
+u8 w1_read_8(struct w1_master *);
+int w1_reset_bus(struct w1_master *);
+u8 w1_calc_crc8(u8 *, int);
+void w1_write_block(struct w1_master *, u8 *, int);
+u8 w1_read_block(struct w1_master *, u8 *, int);
+void w1_search_devices(struct w1_master *dev, w1_slave_found_callback cb);
+
+#endif /* __W1_IO_H */
diff --git a/drivers/w1/w1_log.h b/drivers/w1/w1_log.h
new file mode 100644
index 0000000..a6bf6f4
--- /dev/null
+++ b/drivers/w1/w1_log.h
@@ -0,0 +1,38 @@
+/*
+ * 	w1_log.h
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * 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
+ */
+
+#ifndef __W1_LOG_H
+#define __W1_LOG_H
+
+#define DEBUG
+
+#ifdef W1_DEBUG
+#  define assert(expr) do {} while (0)
+#else
+#  define assert(expr) \
+        if(unlikely(!(expr))) {				        \
+        printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n",	\
+        #expr,__FILE__,__FUNCTION__,__LINE__);		        \
+        }
+#endif
+
+#endif /* __W1_LOG_H */
+
diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c
new file mode 100644
index 0000000..2a82fb0
--- /dev/null
+++ b/drivers/w1/w1_netlink.c
@@ -0,0 +1,66 @@
+/*
+ * w1_netlink.c
+ *
+ * Copyright (c) 2003 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ *
+ *
+ * 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
+ */
+
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+
+#include "w1.h"
+#include "w1_log.h"
+#include "w1_netlink.h"
+
+#ifndef NETLINK_DISABLED
+void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
+{
+	unsigned int size;
+	struct sk_buff *skb;
+	struct w1_netlink_msg *data;
+	struct nlmsghdr *nlh;
+
+	if (!dev->nls)
+		return;
+
+	size = NLMSG_SPACE(sizeof(struct w1_netlink_msg));
+
+	skb = alloc_skb(size, GFP_ATOMIC);
+	if (!skb) {
+		dev_err(&dev->dev, "skb_alloc() failed.\n");
+		return;
+	}
+
+	nlh = NLMSG_PUT(skb, 0, dev->seq++, NLMSG_DONE, size - sizeof(*nlh));
+
+	data = (struct w1_netlink_msg *)NLMSG_DATA(nlh);
+
+	memcpy(data, msg, sizeof(struct w1_netlink_msg));
+
+	NETLINK_CB(skb).dst_groups = dev->groups;
+	netlink_broadcast(dev->nls, skb, 0, dev->groups, GFP_ATOMIC);
+
+nlmsg_failure:
+	return;
+}
+#else
+#warning Netlink support is disabled. Please compile with NET support enabled.
+
+void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
+{
+}
+#endif
diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h
new file mode 100644
index 0000000..ea1b530
--- /dev/null
+++ b/drivers/w1/w1_netlink.h
@@ -0,0 +1,57 @@
+/*
+ * w1_netlink.h
+ *
+ * Copyright (c) 2003 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ *
+ *
+ * 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
+ */
+
+#ifndef __W1_NETLINK_H
+#define __W1_NETLINK_H
+
+#include <asm/types.h>
+
+#include "w1.h"
+
+enum w1_netlink_message_types {
+	W1_SLAVE_ADD = 0,
+	W1_SLAVE_REMOVE,
+	W1_MASTER_ADD,
+	W1_MASTER_REMOVE,
+};
+
+struct w1_netlink_msg 
+{
+	__u8				type;
+	__u8				reserved[3];
+	union
+	{
+		struct w1_reg_num 	id;
+		__u64			w1_id;
+		struct
+		{
+			__u32		id;
+			__u32		pid;
+		} mst;
+	} id;
+};
+
+#ifdef __KERNEL__
+
+void w1_netlink_send(struct w1_master *, struct w1_netlink_msg *);
+
+#endif /* __KERNEL__ */
+#endif /* __W1_NETLINK_H */
diff --git a/drivers/w1/w1_smem.c b/drivers/w1/w1_smem.c
new file mode 100644
index 0000000..ab82eb7
--- /dev/null
+++ b/drivers/w1/w1_smem.c
@@ -0,0 +1,118 @@
+/*
+ * 	w1_smem.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the smems 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
+ */
+
+#include <asm/types.h>
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/types.h>
+
+#include "w1.h"
+#include "w1_io.h"
+#include "w1_int.h"
+#include "w1_family.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, 64bit memory family.");
+
+static ssize_t w1_smem_read_name(struct device *, char *);
+static ssize_t w1_smem_read_val(struct device *, char *);
+static ssize_t w1_smem_read_bin(struct kobject *, char *, loff_t, size_t);
+
+static struct w1_family_ops w1_smem_fops = {
+	.rname = &w1_smem_read_name,
+	.rbin = &w1_smem_read_bin,
+	.rval = &w1_smem_read_val,
+	.rvalname = "id",
+};
+
+static ssize_t w1_smem_read_name(struct device *dev, char *buf)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+
+	return sprintf(buf, "%s\n", sl->name);
+}
+
+static ssize_t w1_smem_read_val(struct device *dev, char *buf)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+	int i;
+	ssize_t count = 0;
+	
+	for (i = 0; i < 9; ++i)
+		count += sprintf(buf + count, "%02x ", ((u8 *)&sl->reg_num)[i]);
+	count += sprintf(buf + count, "\n");
+
+	return count;
+}
+
+static ssize_t w1_smem_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+	struct w1_slave *sl = container_of(container_of(kobj, struct device, kobj),
+			      			struct w1_slave, dev);
+	int i;
+
+	atomic_inc(&sl->refcnt);
+	if (down_interruptible(&sl->master->mutex)) {
+		count = 0;
+		goto out_dec;
+	}
+
+	if (off > W1_SLAVE_DATA_SIZE) {
+		count = 0;
+		goto out;
+	}
+	if (off + count > W1_SLAVE_DATA_SIZE) {
+		count = 0;
+		goto out;
+	}
+	for (i = 0; i < 9; ++i)
+		count += sprintf(buf + count, "%02x ", ((u8 *)&sl->reg_num)[i]);
+	count += sprintf(buf + count, "\n");
+	
+out:
+	up(&sl->master->mutex);
+out_dec:
+	atomic_dec(&sl->refcnt);
+
+	return count;
+}
+
+static struct w1_family w1_smem_family = {
+	.fid = W1_FAMILY_SMEM,
+	.fops = &w1_smem_fops,
+};
+
+static int __init w1_smem_init(void)
+{
+	return w1_register_family(&w1_smem_family);
+}
+
+static void __exit w1_smem_fini(void)
+{
+	w1_unregister_family(&w1_smem_family);
+}
+
+module_init(w1_smem_init);
+module_exit(w1_smem_fini);
diff --git a/drivers/w1/w1_therm.c b/drivers/w1/w1_therm.c
new file mode 100644
index 0000000..0b18178
--- /dev/null
+++ b/drivers/w1/w1_therm.c
@@ -0,0 +1,205 @@
+/*
+ * 	w1_therm.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the therms 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
+ */
+
+#include <asm/types.h>
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+
+#include "w1.h"
+#include "w1_io.h"
+#include "w1_int.h"
+#include "w1_family.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, temperature family.");
+
+static u8 bad_roms[][9] = {
+				{0xaa, 0x00, 0x4b, 0x46, 0xff, 0xff, 0x0c, 0x10, 0x87}, 
+				{}
+			};
+
+static ssize_t w1_therm_read_name(struct device *, char *);
+static ssize_t w1_therm_read_temp(struct device *, char *);
+static ssize_t w1_therm_read_bin(struct kobject *, char *, loff_t, size_t);
+
+static struct w1_family_ops w1_therm_fops = {
+	.rname = &w1_therm_read_name,
+	.rbin = &w1_therm_read_bin,
+	.rval = &w1_therm_read_temp,
+	.rvalname = "temp1_input",
+};
+
+static ssize_t w1_therm_read_name(struct device *dev, char *buf)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+
+	return sprintf(buf, "%s\n", sl->name);
+}
+
+static inline int w1_convert_temp(u8 rom[9])
+{
+	int t, h;
+	
+	if (rom[1] == 0)
+		t = ((s32)rom[0] >> 1)*1000;
+	else
+		t = 1000*(-1*(s32)(0x100-rom[0]) >> 1);
+	
+	t -= 250;
+	h = 1000*((s32)rom[7] - (s32)rom[6]);
+	h /= (s32)rom[7];
+	t += h;
+
+	return t;
+}
+
+static ssize_t w1_therm_read_temp(struct device *dev, char *buf)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+
+	return sprintf(buf, "%d\n", w1_convert_temp(sl->rom));
+}
+
+static int w1_therm_check_rom(u8 rom[9])
+{
+	int i;
+
+	for (i=0; i<sizeof(bad_roms)/9; ++i)
+		if (!memcmp(bad_roms[i], rom, 9))
+			return 1;
+
+	return 0;
+}
+
+static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+	struct w1_slave *sl = container_of(container_of(kobj, struct device, kobj),
+			      			struct w1_slave, dev);
+	struct w1_master *dev = sl->master;
+	u8 rom[9], crc, verdict;
+	int i, max_trying = 10;
+
+	atomic_inc(&sl->refcnt);
+	smp_mb__after_atomic_inc();
+	if (down_interruptible(&sl->master->mutex)) {
+		count = 0;
+		goto out_dec;
+	}
+
+	if (off > W1_SLAVE_DATA_SIZE) {
+		count = 0;
+		goto out;
+	}
+	if (off + count > W1_SLAVE_DATA_SIZE) {
+		count = 0;
+		goto out;
+	}
+
+	memset(buf, 0, count);
+	memset(rom, 0, sizeof(rom));
+
+	count = 0;
+	verdict = 0;
+	crc = 0;
+
+	while (max_trying--) {
+		if (!w1_reset_bus (dev)) {
+			int count = 0;
+			u8 match[9] = {W1_MATCH_ROM, };
+			unsigned int tm = 750;
+
+			memcpy(&match[1], (u64 *) & sl->reg_num, 8);
+			
+			w1_write_block(dev, match, 9);
+
+			w1_write_8(dev, W1_CONVERT_TEMP);
+
+			while (tm) {
+				tm = msleep_interruptible(tm);
+				if (signal_pending(current))
+					flush_signals(current);
+			}
+
+			if (!w1_reset_bus (dev)) {
+				w1_write_block(dev, match, 9);
+				
+				w1_write_8(dev, W1_READ_SCRATCHPAD);
+				if ((count = w1_read_block(dev, rom, 9)) != 9) {
+					dev_warn(&dev->dev, "w1_read_block() returned %d instead of 9.\n", count);
+				}
+
+				crc = w1_calc_crc8(rom, 8);
+
+				if (rom[8] == crc && rom[0])
+					verdict = 1;
+
+			}
+		}
+
+		if (!w1_therm_check_rom(rom))
+			break;
+	}
+
+	for (i = 0; i < 9; ++i)
+		count += sprintf(buf + count, "%02x ", rom[i]);
+	count += sprintf(buf + count, ": crc=%02x %s\n",
+			   crc, (verdict) ? "YES" : "NO");
+	if (verdict)
+		memcpy(sl->rom, rom, sizeof(sl->rom));
+	else
+		dev_warn(&dev->dev, "18S20 doesn't respond to CONVERT_TEMP.\n");
+
+	for (i = 0; i < 9; ++i)
+		count += sprintf(buf + count, "%02x ", sl->rom[i]);
+	
+	count += sprintf(buf + count, "t=%d\n", w1_convert_temp(rom));
+out:
+	up(&dev->mutex);
+out_dec:
+	smp_mb__before_atomic_inc();
+	atomic_dec(&sl->refcnt);
+
+	return count;
+}
+
+static struct w1_family w1_therm_family = {
+	.fid = W1_FAMILY_THERM,
+	.fops = &w1_therm_fops,
+};
+
+static int __init w1_therm_init(void)
+{
+	return w1_register_family(&w1_therm_family);
+}
+
+static void __exit w1_therm_fini(void)
+{
+	w1_unregister_family(&w1_therm_family);
+}
+
+module_init(w1_therm_init);
+module_exit(w1_therm_fini);