1 files changed, 748 insertions, 0 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
new file mode 100644
index 000000000000..3385dd03abfc
--- /dev/null
+++ b/drivers/input/input.c
@@ -0,0 +1,748 @@
+/*
+ * The input core
+ *
+ * Copyright (c) 1999-2002 Vojtech Pavlik
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/major.h>
+#include <linux/proc_fs.h>
+#include <linux/kobject_uevent.h>
+#include <linux/interrupt.h>
+#include <linux/poll.h>
+#include <linux/device.h>
+#include <linux/devfs_fs_kernel.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION("Input core");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(input_register_device);
+EXPORT_SYMBOL(input_unregister_device);
+EXPORT_SYMBOL(input_register_handler);
+EXPORT_SYMBOL(input_unregister_handler);
+EXPORT_SYMBOL(input_grab_device);
+EXPORT_SYMBOL(input_release_device);
+EXPORT_SYMBOL(input_open_device);
+EXPORT_SYMBOL(input_close_device);
+EXPORT_SYMBOL(input_accept_process);
+EXPORT_SYMBOL(input_flush_device);
+EXPORT_SYMBOL(input_event);
+EXPORT_SYMBOL(input_class);
+
+#define INPUT_DEVICES   256
+
+static LIST_HEAD(input_dev_list);
+static LIST_HEAD(input_handler_list);
+
+static struct input_handler *input_table[8];
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *proc_bus_input_dir;
+static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
+static int input_devices_state;
+#endif
+
+void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+        struct input_handle *handle;
+
+        if (type > EV_MAX || !test_bit(type, dev->evbit))
+                return;
+
+        add_input_randomness(type, code, value);
+
+        switch (type) {
+
+                case EV_SYN:
+                        switch (code) {
+                                case SYN_CONFIG:
+                                        if (dev->event) dev->event(dev, type, code, value);
+                                        break;
+
+                                case SYN_REPORT:
+                                        if (dev->sync) return;
+                                        dev->sync = 1;
+                                        break;
+                        }
+                        break;
+
+                case EV_KEY:
+
+                        if (code > KEY_MAX || !test_bit(code, dev->keybit) || !!test_bit(code, dev->key) == value)
+                                return;
+
+                        if (value == 2)
+                                break;
+
+                        change_bit(code, dev->key);
+
+                        if (test_bit(EV_REP, dev->evbit) && dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] && dev->timer.data && value) {
+                                dev->repeat_key = code;
+                                mod_timer(&dev->timer, jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]));
+                        }
+
+                        break;
+
+                case EV_ABS:
+
+                        if (code > ABS_MAX || !test_bit(code, dev->absbit))
+                                return;
+
+                        if (dev->absfuzz[code]) {
+                                if ((value > dev->abs[code] - (dev->absfuzz[code] >> 1)) &&
+                                    (value < dev->abs[code] + (dev->absfuzz[code] >> 1)))
+                                        return;
+
+                                if ((value > dev->abs[code] - dev->absfuzz[code]) &&
+                                    (value < dev->abs[code] + dev->absfuzz[code]))
+                                        value = (dev->abs[code] * 3 + value) >> 2;
+
+                                if ((value > dev->abs[code] - (dev->absfuzz[code] << 1)) &&
+                                    (value < dev->abs[code] + (dev->absfuzz[code] << 1)))
+                                        value = (dev->abs[code] + value) >> 1;
+                        }
+
+                        if (dev->abs[code] == value)
+                                return;
+
+                        dev->abs[code] = value;
+                        break;
+
+                case EV_REL:
+
+                        if (code > REL_MAX || !test_bit(code, dev->relbit) || (value == 0))
+                                return;
+
+                        break;
+
+                case EV_MSC:
+
+                        if (code > MSC_MAX || !test_bit(code, dev->mscbit))
+                                return;
+
+                        if (dev->event) dev->event(dev, type, code, value);
+
+                        break;
+
+                case EV_LED:
+
+                        if (code > LED_MAX || !test_bit(code, dev->ledbit) || !!test_bit(code, dev->led) == value)
+                                return;
+
+                        change_bit(code, dev->led);
+                        if (dev->event) dev->event(dev, type, code, value);
+
+                        break;
+
+                case EV_SND:
+
+                        if (code > SND_MAX || !test_bit(code, dev->sndbit))
+                                return;
+
+                        if (dev->event) dev->event(dev, type, code, value);
+
+                        break;
+
+                case EV_REP:
+
+                        if (code > REP_MAX || value < 0 || dev->rep[code] == value) return;
+
+                        dev->rep[code] = value;
+                        if (dev->event) dev->event(dev, type, code, value);
+
+                        break;
+
+                case EV_FF:
+                        if (dev->event) dev->event(dev, type, code, value);
+                        break;
+        }
+
+        if (type != EV_SYN)
+                dev->sync = 0;
+
+        if (dev->grab)
+                dev->grab->handler->event(dev->grab, type, code, value);
+        else
+                list_for_each_entry(handle, &dev->h_list, d_node)
+                        if (handle->open)
+                                handle->handler->event(handle, type, code, value);
+}
+
+static void input_repeat_key(unsigned long data)
+{
+        struct input_dev *dev = (void *) data;
+
+        if (!test_bit(dev->repeat_key, dev->key))
+                return;
+
+        input_event(dev, EV_KEY, dev->repeat_key, 2);
+        input_sync(dev);
+
+        if (dev->rep[REP_PERIOD])
+                mod_timer(&dev->timer, jiffies + msecs_to_jiffies(dev->rep[REP_PERIOD]));
+}
+
+int input_accept_process(struct input_handle *handle, struct file *file)
+{
+        if (handle->dev->accept)
+                return handle->dev->accept(handle->dev, file);
+
+        return 0;
+}
+
+int input_grab_device(struct input_handle *handle)
+{
+        if (handle->dev->grab)
+                return -EBUSY;
+
+        handle->dev->grab = handle;
+        return 0;
+}
+
+void input_release_device(struct input_handle *handle)
+{
+        if (handle->dev->grab == handle)
+                handle->dev->grab = NULL;
+}
+
+int input_open_device(struct input_handle *handle)
+{
+        handle->open++;
+        if (handle->dev->open)
+                return handle->dev->open(handle->dev);
+        return 0;
+}
+
+int input_flush_device(struct input_handle* handle, struct file* file)
+{
+        if (handle->dev->flush)
+                return handle->dev->flush(handle->dev, file);
+
+        return 0;
+}
+
+void input_close_device(struct input_handle *handle)
+{
+        input_release_device(handle);
+        if (handle->dev->close)
+                handle->dev->close(handle->dev);
+        handle->open--;
+}
+
+static void input_link_handle(struct input_handle *handle)
+{
+        list_add_tail(&handle->d_node, &handle->dev->h_list);
+        list_add_tail(&handle->h_node, &handle->handler->h_list);
+}
+
+#define MATCH_BIT(bit, max) \
+                for (i = 0; i < NBITS(max); i++) \
+                        if ((id->bit[i] & dev->bit[i]) != id->bit[i]) \
+                                break; \
+                if (i != NBITS(max)) \
+                        continue;
+
+static struct input_device_id *input_match_device(struct input_device_id *id, struct input_dev *dev)
+{
+        int i;
+
+        for (; id->flags || id->driver_info; id++) {
+
+                if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
+                        if (id->id.bustype != dev->id.bustype)
+                                continue;
+
+                if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
+                        if (id->id.vendor != dev->id.vendor)
+                                continue;
+
+                if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
+                        if (id->id.product != dev->id.product)
+                                continue;
+
+                if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
+                        if (id->id.version != dev->id.version)
+                                continue;
+
+                MATCH_BIT(evbit,  EV_MAX);
+                MATCH_BIT(keybit, KEY_MAX);
+                MATCH_BIT(relbit, REL_MAX);
+                MATCH_BIT(absbit, ABS_MAX);
+                MATCH_BIT(mscbit, MSC_MAX);
+                MATCH_BIT(ledbit, LED_MAX);
+                MATCH_BIT(sndbit, SND_MAX);
+                MATCH_BIT(ffbit,  FF_MAX);
+
+                return id;
+        }
+
+        return NULL;
+}
+
+/*
+ * Input hotplugging interface - loading event handlers based on
+ * device bitfields.
+ */
+
+#ifdef CONFIG_HOTPLUG
+
+/*
+ * Input hotplugging invokes what /proc/sys/kernel/hotplug says
+ * (normally /sbin/hotplug) when input devices get added or removed.
+ *
+ * This invokes a user mode policy agent, typically helping to load driver
+ * or other modules, configure the device, and more.  Drivers can provide
+ * a MODULE_DEVICE_TABLE to help with module loading subtasks.
+ *
+ */
+
+#define SPRINTF_BIT_A(bit, name, max) \
+        do { \
+                envp[i++] = scratch; \
+                scratch += sprintf(scratch, name); \
+                for (j = NBITS(max) - 1; j >= 0; j--) \
+                        if (dev->bit[j]) break; \
+                for (; j >= 0; j--) \
+                        scratch += sprintf(scratch, "%lx ", dev->bit[j]); \
+                scratch++; \
+        } while (0)
+
+#define SPRINTF_BIT_A2(bit, name, max, ev) \
+        do { \
+                if (test_bit(ev, dev->evbit)) \
+                        SPRINTF_BIT_A(bit, name, max); \
+        } while (0)
+
+static void input_call_hotplug(char *verb, struct input_dev *dev)
+{
+        char *argv[3], **envp, *buf, *scratch;
+        int i = 0, j, value;
+
+        if (!hotplug_path[0]) {
+                printk(KERN_ERR "input.c: calling hotplug without a hotplug agent defined\n");
+                return;
+        }
+        if (in_interrupt()) {
+                printk(KERN_ERR "input.c: calling hotplug from interrupt\n");
+                return;
+        }
+        if (!current->fs->root) {
+                printk(KERN_WARNING "input.c: calling hotplug without valid filesystem\n");
+                return;
+        }
+        if (!(envp = (char **) kmalloc(20 * sizeof(char *), GFP_KERNEL))) {
+                printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
+                return;
+        }
+        if (!(buf = kmalloc(1024, GFP_KERNEL))) {
+                kfree (envp);
+                printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
+                return;
+        }
+
+        argv[0] = hotplug_path;
+        argv[1] = "input";
+        argv[2] = NULL;
+
+        envp[i++] = "HOME=/";
+        envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+
+        scratch = buf;
+
+        envp[i++] = scratch;
+        scratch += sprintf(scratch, "ACTION=%s", verb) + 1;
+
+        envp[i++] = scratch;
+        scratch += sprintf(scratch, "PRODUCT=%x/%x/%x/%x",
+                dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version) + 1;
+
+        if (dev->name) {
+                envp[i++] = scratch;
+                scratch += sprintf(scratch, "NAME=%s", dev->name) + 1;
+        }
+
+        if (dev->phys) {
+                envp[i++] = scratch;
+                scratch += sprintf(scratch, "PHYS=%s", dev->phys) + 1;
+        }
+
+        SPRINTF_BIT_A(evbit, "EV=", EV_MAX);
+        SPRINTF_BIT_A2(keybit, "KEY=", KEY_MAX, EV_KEY);
+        SPRINTF_BIT_A2(relbit, "REL=", REL_MAX, EV_REL);
+        SPRINTF_BIT_A2(absbit, "ABS=", ABS_MAX, EV_ABS);
+        SPRINTF_BIT_A2(mscbit, "MSC=", MSC_MAX, EV_MSC);
+        SPRINTF_BIT_A2(ledbit, "LED=", LED_MAX, EV_LED);
+        SPRINTF_BIT_A2(sndbit, "SND=", SND_MAX, EV_SND);
+        SPRINTF_BIT_A2(ffbit,  "FF=",  FF_MAX, EV_FF);
+
+        envp[i++] = NULL;
+
+#ifdef INPUT_DEBUG
+        printk(KERN_DEBUG "input.c: calling %s %s [%s %s %s %s %s]\n",
+                argv[0], argv[1], envp[0], envp[1], envp[2], envp[3], envp[4]);
+#endif
+
+        value = call_usermodehelper(argv [0], argv, envp, 0);
+
+        kfree(buf);
+        kfree(envp);
+
+#ifdef INPUT_DEBUG
+        if (value != 0)
+                printk(KERN_DEBUG "input.c: hotplug returned %d\n", value);
+#endif
+}
+
+#endif
+
+void input_register_device(struct input_dev *dev)
+{
+        struct input_handle *handle;
+        struct input_handler *handler;
+        struct input_device_id *id;
+
+        set_bit(EV_SYN, dev->evbit);
+
+        /*
+         * If delay and period are pre-set by the driver, then autorepeating
+         * is handled by the driver itself and we don't do it in input.c.
+         */
+
+        init_timer(&dev->timer);
+        if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD]) {
+                dev->timer.data = (long) dev;
+                dev->timer.function = input_repeat_key;
+                dev->rep[REP_DELAY] = 250;
+                dev->rep[REP_PERIOD] = 33;
+        }
+
+        INIT_LIST_HEAD(&dev->h_list);
+        list_add_tail(&dev->node, &input_dev_list);
+
+        list_for_each_entry(handler, &input_handler_list, node)
+                if (!handler->blacklist || !input_match_device(handler->blacklist, dev))
+                        if ((id = input_match_device(handler->id_table, dev)))
+                                if ((handle = handler->connect(handler, dev, id)))
+                                        input_link_handle(handle);
+
+#ifdef CONFIG_HOTPLUG
+        input_call_hotplug("add", dev);
+#endif
+
+#ifdef CONFIG_PROC_FS
+        input_devices_state++;
+        wake_up(&input_devices_poll_wait);
+#endif
+}
+
+void input_unregister_device(struct input_dev *dev)
+{
+        struct list_head * node, * next;
+
+        if (!dev) return;
+
+        del_timer_sync(&dev->timer);
+
+        list_for_each_safe(node, next, &dev->h_list) {
+                struct input_handle * handle = to_handle(node);
+                list_del_init(&handle->d_node);
+                list_del_init(&handle->h_node);
+                handle->handler->disconnect(handle);
+        }
+
+#ifdef CONFIG_HOTPLUG
+        input_call_hotplug("remove", dev);
+#endif
+
+        list_del_init(&dev->node);
+
+#ifdef CONFIG_PROC_FS
+        input_devices_state++;
+        wake_up(&input_devices_poll_wait);
+#endif
+}
+
+void input_register_handler(struct input_handler *handler)
+{
+        struct input_dev *dev;
+        struct input_handle *handle;
+        struct input_device_id *id;
+
+        if (!handler) return;
+
+        INIT_LIST_HEAD(&handler->h_list);
+
+        if (handler->fops != NULL)
+                input_table[handler->minor >> 5] = handler;
+
+        list_add_tail(&handler->node, &input_handler_list);
+
+        list_for_each_entry(dev, &input_dev_list, node)
+                if (!handler->blacklist || !input_match_device(handler->blacklist, dev))
+                        if ((id = input_match_device(handler->id_table, dev)))
+                                if ((handle = handler->connect(handler, dev, id)))
+                                        input_link_handle(handle);
+
+#ifdef CONFIG_PROC_FS
+        input_devices_state++;
+        wake_up(&input_devices_poll_wait);
+#endif
+}
+
+void input_unregister_handler(struct input_handler *handler)
+{
+        struct list_head * node, * next;
+
+        list_for_each_safe(node, next, &handler->h_list) {
+                struct input_handle * handle = to_handle_h(node);
+                list_del_init(&handle->h_node);
+                list_del_init(&handle->d_node);
+                handler->disconnect(handle);
+        }
+
+        list_del_init(&handler->node);
+
+        if (handler->fops != NULL)
+                input_table[handler->minor >> 5] = NULL;
+
+#ifdef CONFIG_PROC_FS
+        input_devices_state++;
+        wake_up(&input_devices_poll_wait);
+#endif
+}
+
+static int input_open_file(struct inode *inode, struct file *file)
+{
+        struct input_handler *handler = input_table[iminor(inode) >> 5];
+        struct file_operations *old_fops, *new_fops = NULL;
+        int err;
+
+        /* No load-on-demand here? */
+        if (!handler || !(new_fops = fops_get(handler->fops)))
+                return -ENODEV;
+
+        /*
+         * That's _really_ odd. Usually NULL ->open means "nothing special",
+         * not "no device". Oh, well...
+         */
+        if (!new_fops->open) {
+                fops_put(new_fops);
+                return -ENODEV;
+        }
+        old_fops = file->f_op;
+        file->f_op = new_fops;
+
+        err = new_fops->open(inode, file);
+
+        if (err) {
+                fops_put(file->f_op);
+                file->f_op = fops_get(old_fops);
+        }
+        fops_put(old_fops);
+        return err;
+}
+
+static struct file_operations input_fops = {
+        .owner = THIS_MODULE,
+        .open = input_open_file,
+};
+
+#ifdef CONFIG_PROC_FS
+
+#define SPRINTF_BIT_B(bit, name, max) \
+        do { \
+                len += sprintf(buf + len, "B: %s", name); \
+                for (i = NBITS(max) - 1; i >= 0; i--) \
+                        if (dev->bit[i]) break; \
+                for (; i >= 0; i--) \
+                        len += sprintf(buf + len, "%lx ", dev->bit[i]); \
+                len += sprintf(buf + len, "\n"); \
+        } while (0)
+
+#define SPRINTF_BIT_B2(bit, name, max, ev) \
+        do { \
+                if (test_bit(ev, dev->evbit)) \
+                        SPRINTF_BIT_B(bit, name, max); \
+        } while (0)
+
+
+static unsigned int input_devices_poll(struct file *file, poll_table *wait)
+{
+        int state = input_devices_state;
+        poll_wait(file, &input_devices_poll_wait, wait);
+        if (state != input_devices_state)
+                return POLLIN | POLLRDNORM;
+        return 0;
+}
+
+static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
+{
+        struct input_dev *dev;
+        struct input_handle *handle;
+
+        off_t at = 0;
+        int i, len, cnt = 0;
+
+        list_for_each_entry(dev, &input_dev_list, node) {
+
+                len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
+                        dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
+
+                len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
+                len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
+                len += sprintf(buf + len, "H: Handlers=");
+
+                list_for_each_entry(handle, &dev->h_list, d_node)
+                        len += sprintf(buf + len, "%s ", handle->name);
+
+                len += sprintf(buf + len, "\n");
+
+                SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
+                SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
+                SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
+                SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
+                SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
+                SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
+                SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
+                SPRINTF_BIT_B2(ffbit,  "FF=",  FF_MAX, EV_FF);
+
+                len += sprintf(buf + len, "\n");
+
+                at += len;
+
+                if (at >= pos) {
+                        if (!*start) {
+                                *start = buf + (pos - (at - len));
+                                cnt = at - pos;
+                        } else  cnt += len;
+                        buf += len;
+                        if (cnt >= count)
+                                break;
+                }
+        }
+
+        if (&dev->node == &input_dev_list)
+                *eof = 1;
+
+        return (count > cnt) ? cnt : count;
+}
+
+static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
+{
+        struct input_handler *handler;
+
+        off_t at = 0;
+        int len = 0, cnt = 0;
+        int i = 0;
+
+        list_for_each_entry(handler, &input_handler_list, node) {
+
+                if (handler->fops)
+                        len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
+                                i++, handler->name, handler->minor);
+                else
+                        len = sprintf(buf, "N: Number=%d Name=%s\n",
+                                i++, handler->name);
+
+                at += len;
+
+                if (at >= pos) {
+                        if (!*start) {
+                                *start = buf + (pos - (at - len));
+                                cnt = at - pos;
+                        } else  cnt += len;
+                        buf += len;
+                        if (cnt >= count)
+                                break;
+                }
+        }
+        if (&handler->node == &input_handler_list)
+                *eof = 1;
+
+        return (count > cnt) ? cnt : count;
+}
+
+static int __init input_proc_init(void)
+{
+        struct proc_dir_entry *entry;
+
+        proc_bus_input_dir = proc_mkdir("input", proc_bus);
+        if (proc_bus_input_dir == NULL)
+                return -ENOMEM;
+        proc_bus_input_dir->owner = THIS_MODULE;
+        entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
+        if (entry == NULL) {
+                remove_proc_entry("input", proc_bus);
+                return -ENOMEM;
+        }
+        entry->owner = THIS_MODULE;
+        entry->proc_fops->poll = input_devices_poll;
+        entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
+        if (entry == NULL) {
+                remove_proc_entry("devices", proc_bus_input_dir);
+                remove_proc_entry("input", proc_bus);
+                return -ENOMEM;
+        }
+        entry->owner = THIS_MODULE;
+        return 0;
+}
+#else /* !CONFIG_PROC_FS */
+static inline int input_proc_init(void) { return 0; }
+#endif
+
+struct class_simple *input_class;
+
+static int __init input_init(void)
+{
+        int retval = -ENOMEM;
+
+        input_class = class_simple_create(THIS_MODULE, "input");
+        if (IS_ERR(input_class))
+                return PTR_ERR(input_class);
+        input_proc_init();
+        retval = register_chrdev(INPUT_MAJOR, "input", &input_fops);
+        if (retval) {
+                printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
+                remove_proc_entry("devices", proc_bus_input_dir);
+                remove_proc_entry("handlers", proc_bus_input_dir);
+                remove_proc_entry("input", proc_bus);
+                class_simple_destroy(input_class);
+                return retval;
+        }
+
+        retval = devfs_mk_dir("input");
+        if (retval) {
+                remove_proc_entry("devices", proc_bus_input_dir);
+                remove_proc_entry("handlers", proc_bus_input_dir);
+                remove_proc_entry("input", proc_bus);
+                unregister_chrdev(INPUT_MAJOR, "input");
+                class_simple_destroy(input_class);
+        }
+        return retval;
+}
+
+static void __exit input_exit(void)
+{
+        remove_proc_entry("devices", proc_bus_input_dir);
+        remove_proc_entry("handlers", proc_bus_input_dir);
+        remove_proc_entry("input", proc_bus);
+
+        devfs_remove("input");
+        unregister_chrdev(INPUT_MAJOR, "input");
+        class_simple_destroy(input_class);
+}
+
+subsys_initcall(input_init);
+module_exit(input_exit);