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authorRalf Baechle <ralf@linux-mips.org>2000-08-28 22:00:09 +0000
committerRalf Baechle <ralf@linux-mips.org>2000-08-28 22:00:09 +0000
commit1a1d77dd589de5a567fa95e36aa6999c704ceca4 (patch)
tree141e31f89f18b9fe0831f31852e0435ceaccafc5 /drivers/usb/input.c
parentfb9c690a18b3d66925a65b17441c37fa14d4370b (diff)
Merge with 2.4.0-test7.
Diffstat (limited to 'drivers/usb/input.c')
-rw-r--r--drivers/usb/input.c426
1 files changed, 0 insertions, 426 deletions
diff --git a/drivers/usb/input.c b/drivers/usb/input.c
deleted file mode 100644
index f3701965e..000000000
--- a/drivers/usb/input.c
+++ /dev/null
@@ -1,426 +0,0 @@
-/*
- * $Id: input.c,v 1.7 2000/05/28 17:31:36 vojtech Exp $
- *
- * Copyright (c) 1999-2000 Vojtech Pavlik
- *
- * The input layer module itself
- *
- * Sponsored by SuSE
- */
-
-/*
- * 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
- *
- * Should you need to contact me, the author, you can do so either by
- * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
- * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
- */
-
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/module.h>
-#include <linux/random.h>
-
-MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
-MODULE_DESCRIPTION("Input layer module");
-
-EXPORT_SYMBOL(input_register_device);
-EXPORT_SYMBOL(input_unregister_device);
-EXPORT_SYMBOL(input_register_handler);
-EXPORT_SYMBOL(input_unregister_handler);
-EXPORT_SYMBOL(input_register_minor);
-EXPORT_SYMBOL(input_unregister_minor);
-EXPORT_SYMBOL(input_open_device);
-EXPORT_SYMBOL(input_close_device);
-EXPORT_SYMBOL(input_event);
-
-#define INPUT_MAJOR 13
-#define INPUT_DEVICES 256
-
-static struct input_dev *input_dev = NULL;
-static struct input_handler *input_handler = NULL;
-static struct input_handler *input_table[8] = { NULL, /* ... */ };
-static devfs_handle_t input_devfs_handle = NULL;
-static int input_number = 0;
-static long input_devices[NBITS(INPUT_DEVICES)] = { 0, /* ... */ };
-
-void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
-{
- struct input_handle *handle = dev->handle;
-
-/*
- * Filter non-events, and bad input values out.
- */
-
- if (type > EV_MAX || !test_bit(type, dev->evbit))
- return;
-
- switch (type) {
-
- 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->timer.function) {
- if (value) {
- mod_timer(&dev->timer, jiffies + dev->rep[REP_DELAY]);
- dev->repeat_key = code;
- break;
- }
- if (dev->repeat_key == code)
- del_timer(&dev->timer);
- }
-
- 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_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) || !!test_bit(code, dev->snd) == value)
- return;
-
- change_bit(code, dev->snd);
- if (dev->event) dev->event(dev, type, code, value);
-
- break;
-
- case EV_REP:
-
- if (code > REP_MAX || dev->rep[code] == value) return;
-
- dev->rep[code] = value;
- if (dev->event) dev->event(dev, type, code, value);
-
- break;
- }
-/*
- * Add randomness.
- */
-
-#if 0 /* BUG */
- add_input_randomness(((unsigned long) dev) ^ (type << 24) ^ (code << 16) ^ value);
-#endif
-
-/*
- * Distribute the event to handler modules.
- */
-
- while (handle) {
- if (handle->open)
- handle->handler->event(handle, type, code, value);
- handle = handle->dnext;
- }
-}
-
-static void input_repeat_key(unsigned long data)
-{
- struct input_dev *dev = (void *) data;
- input_event(dev, EV_KEY, dev->repeat_key, 2);
- mod_timer(&dev->timer, jiffies + dev->rep[REP_PERIOD]);
-}
-
-int input_open_device(struct input_handle *handle)
-{
- handle->open++;
- if (handle->dev->open)
- return handle->dev->open(handle->dev);
- return 0;
-}
-
-void input_close_device(struct input_handle *handle)
-{
- if (handle->dev->close)
- handle->dev->close(handle->dev);
- handle->open--;
-}
-
-static void input_link_handle(struct input_handle *handle)
-{
- handle->dnext = handle->dev->handle;
- handle->hnext = handle->handler->handle;
- handle->dev->handle = handle;
- handle->handler->handle = handle;
-}
-
-static void input_unlink_handle(struct input_handle *handle)
-{
- struct input_handle **handleptr;
-
- handleptr = &handle->dev->handle;
- while (*handleptr && (*handleptr != handle))
- handleptr = &((*handleptr)->dnext);
- *handleptr = (*handleptr)->dnext;
-
- handleptr = &handle->handler->handle;
- while (*handleptr && (*handleptr != handle))
- handleptr = &((*handleptr)->hnext);
- *handleptr = (*handleptr)->hnext;
-}
-
-void input_register_device(struct input_dev *dev)
-{
- struct input_handler *handler = input_handler;
- struct input_handle *handle;
-
-/*
- * Initialize repeat timer to default values.
- */
-
- init_timer(&dev->timer);
- dev->timer.data = (long) dev;
- dev->timer.function = input_repeat_key;
- dev->rep[REP_DELAY] = HZ/4;
- dev->rep[REP_PERIOD] = HZ/33;
-
-/*
- * Add the device.
- */
-
- if (input_number >= INPUT_DEVICES) {
- printk(KERN_WARNING "input: ran out of input device numbers!\n");
- dev->number = input_number;
- } else {
- dev->number = find_first_zero_bit(input_devices, INPUT_DEVICES);
- set_bit(dev->number, input_devices);
- }
-
- dev->next = input_dev;
- input_dev = dev;
- input_number++;
-
-/*
- * Notify handlers.
- */
-
- while (handler) {
- if ((handle = handler->connect(handler, dev)))
- input_link_handle(handle);
- handler = handler->next;
- }
-}
-
-void input_unregister_device(struct input_dev *dev)
-{
- struct input_handle *handle = dev->handle;
- struct input_dev **devptr = &input_dev;
- struct input_handle *dnext;
-
-/*
- * Kill any pending repeat timers.
- */
-
- del_timer(&dev->timer);
-
-/*
- * Notify handlers.
- */
-
- while (handle) {
- dnext = handle->dnext;
- input_unlink_handle(handle);
- handle->handler->disconnect(handle);
- handle = dnext;
- }
-
-/*
- * Remove the device.
- */
-
- while (*devptr && (*devptr != dev))
- devptr = &((*devptr)->next);
- *devptr = (*devptr)->next;
-
- input_number--;
-
- if (dev->number < INPUT_DEVICES)
- clear_bit(dev->number, input_devices);
-}
-
-void input_register_handler(struct input_handler *handler)
-{
- struct input_dev *dev = input_dev;
- struct input_handle *handle;
-
-/*
- * Add minors if needed.
- */
-
- if (handler->fops != NULL)
- input_table[handler->minor >> 5] = handler;
-
-/*
- * Add the handler.
- */
-
- handler->next = input_handler;
- input_handler = handler;
-
-/*
- * Notify it about all existing devices.
- */
-
- while (dev) {
- if ((handle = handler->connect(handler, dev)))
- input_link_handle(handle);
- dev = dev->next;
- }
-}
-
-void input_unregister_handler(struct input_handler *handler)
-{
- struct input_handler **handlerptr = &input_handler;
- struct input_handle *handle = handler->handle;
- struct input_handle *hnext;
-
-/*
- * Tell the handler to disconnect from all devices it keeps open.
- */
-
- while (handle) {
- hnext = handle->hnext;
- input_unlink_handle(handle);
- handler->disconnect(handle);
- handle = hnext;
- }
-
-/*
- * Remove it.
- */
-
- while (*handlerptr && (*handlerptr != handler))
- handlerptr = &((*handlerptr)->next);
-
- *handlerptr = (*handlerptr)->next;
-
-/*
- * Remove minors.
- */
-
- if (handler->fops != NULL)
- input_table[handler->minor >> 5] = NULL;
-}
-
-static int input_open_file(struct inode *inode, struct file *file)
-{
- struct input_handler *handler = input_table[MINOR(inode->i_rdev) >> 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,
-};
-
-devfs_handle_t input_register_minor(char *name, int minor, int minor_base)
-{
- char devfs_name[16];
- sprintf(devfs_name, name, minor);
- return devfs_register(input_devfs_handle, devfs_name, DEVFS_FL_DEFAULT, INPUT_MAJOR, minor + minor_base,
- S_IFCHR | S_IRUGO | S_IWUSR, &input_fops, NULL);
-}
-
-void input_unregister_minor(devfs_handle_t handle)
-{
- devfs_unregister(handle);
-}
-
-static int __init input_init(void)
-{
- if (devfs_register_chrdev(INPUT_MAJOR, "input", &input_fops)) {
- printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
- return -EBUSY;
- }
- input_devfs_handle = devfs_mk_dir(NULL, "input", NULL);
- return 0;
-}
-
-static void __exit input_exit(void)
-{
- devfs_unregister(input_devfs_handle);
- if (devfs_unregister_chrdev(INPUT_MAJOR, "input"))
- printk(KERN_ERR "input: can't unregister char major %d", INPUT_MAJOR);
-}
-
-module_init(input_init);
-module_exit(input_exit);