Index: linux-2.6.25/drivers/input/Kconfig
===================================================================
--- linux-2.6.25.orig/drivers/input/Kconfig	2008-04-17 04:49:44.000000000 +0200
+++ linux-2.6.25/drivers/input/Kconfig	2008-08-21 16:37:40.000000000 +0200
@@ -69,6 +69,13 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called mousedev.
 
+config INPUT_VMS
+	tristate "Virtual Mouse Driver" if EMBEDDED
+	default y
+	---help---
+	  vms.c from the book Essential Linux Device Drivers
+
+
 config INPUT_MOUSEDEV_PSAUX
 	bool "Provide legacy /dev/psaux device"
 	default y
Index: linux-2.6.25/drivers/input/Makefile
===================================================================
--- linux-2.6.25.orig/drivers/input/Makefile	2008-04-17 04:49:44.000000000 +0200
+++ linux-2.6.25/drivers/input/Makefile	2008-08-21 16:37:40.000000000 +0200
@@ -11,6 +11,8 @@
 obj-$(CONFIG_INPUT_POLLDEV)	+= input-polldev.o
 
 obj-$(CONFIG_INPUT_MOUSEDEV)	+= mousedev.o
+
+obj-$(CONFIG_INPUT_VMS)	+= vms.o
 obj-$(CONFIG_INPUT_JOYDEV)	+= joydev.o
 obj-$(CONFIG_INPUT_EVDEV)	+= evdev.o
 obj-$(CONFIG_INPUT_EVBUG)	+= evbug.o
Index: linux-2.6.25/drivers/input/vms.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.25/drivers/input/vms.c	2008-08-21 17:24:05.000000000 +0200
@@ -0,0 +1,89 @@
+/**
+ * Copyright (c) 2008 by Pearson Education, Inc.
+ *
+ * This material may be distributed only subject to the terms and conditions
+ * set forth in the Open Publication License, v1.0 or later (the latest version
+ * is presently available at http://www.opencontent.org/openpub/).
+ *
+ * Copyright (c) 2008 Leon Woestenberg
+ * Copyright (c) 2008 Sreekrishnan Venkateswaran
+ *
+ * I copied this from Sreekrishnan's book (see http://elinuxdd.com) -- Leon.
+ *
+ */
+
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+
+struct input_dev *vms_input_dev;
+static struct platform_device *vms_dev;
+
+/* for each set of coordinates, we publish them along with a left button
+ * press and release event
+ */
+static ssize_t write_vms(struct device *dev, struct device_attribute *attr,
+  const char *buffer, size_t count)
+{
+	int x, y;
+	sscanf(buffer, "%d%d", &x, &y);
+	input_report_abs(vms_input_dev, ABS_X, x);
+	input_report_abs(vms_input_dev, ABS_Y, y);
+	input_report_key(vms_input_dev, BTN_LEFT, 1);
+	input_sync(vms_input_dev);
+	input_report_key(vms_input_dev, BTN_LEFT, 0);
+	input_sync(vms_input_dev);
+	return count;
+}
+
+DEVICE_ATTR(coordinates, 0644, NULL, write_vms);
+
+static struct attribute *vms_attrs[] = {
+  &dev_attr_coordinates.attr,
+  NULL
+};
+
+static struct attribute_group vms_attr_group = {
+  .attrs = vms_attrs,
+};
+
+static int __init vms_init(void)
+{
+	vms_dev = platform_device_register_simple("vms", -1, NULL, 0);
+	if (IS_ERR(vms_dev)) {
+		PTR_ERR(vms_dev);
+		printk("vms_init: error\n");
+	}
+	sysfs_create_group(&vms_dev->dev.kobj, &vms_attr_group);
+
+	vms_input_dev = input_allocate_device();
+	if (!vms_input_dev) {
+		printk("bad input_allocate_device()\n");
+	}
+
+	set_bit(EV_ABS, vms_input_dev->evbit);
+	set_bit(ABS_X, vms_input_dev->absbit);
+	set_bit(ABS_Y, vms_input_dev->absbit);
+
+	set_bit(EV_KEY, vms_input_dev->evbit);
+	set_bit(BTN_LEFT, vms_input_dev->keybit);
+
+	input_register_device(vms_input_dev);
+	printk("vms initialized\n");
+	return 0;
+}
+
+static int __init vms_exit(void)
+{
+	input_unregister_device(vms_input_dev);
+	sysfs_remove_group(&vms_dev->dev.kobj, &vms_attr_group);
+	platform_device_unregister(vms_dev);
+	return;
+}
+
+module_init(vms_init);
+module_exit(vms_exit);
+
+MODULE_LICENSE("GPL");
+