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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/evdev.c
parentfb9c690a18b3d66925a65b17441c37fa14d4370b (diff)
Merge with 2.4.0-test7.
Diffstat (limited to 'drivers/usb/evdev.c')
-rw-r--r--drivers/usb/evdev.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/drivers/usb/evdev.c b/drivers/usb/evdev.c
deleted file mode 100644
index 65109e9ca..000000000
--- a/drivers/usb/evdev.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * $Id: evdev.c,v 1.10 2000/06/23 09:23:00 vojtech Exp $
- *
- * Copyright (c) 1999-2000 Vojtech Pavlik
- *
- * Event char devices, giving access to raw input device events.
- *
- * 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
- */
-
-#define EVDEV_MINOR_BASE 64
-#define EVDEV_MINORS 32
-#define EVDEV_BUFFER_SIZE 64
-
-#include <linux/poll.h>
-#include <linux/malloc.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/smp_lock.h>
-
-struct evdev {
- int exist;
- int open;
- int minor;
- struct input_handle handle;
- wait_queue_head_t wait;
- devfs_handle_t devfs;
- struct evdev_list *list;
-};
-
-struct evdev_list {
- struct input_event buffer[EVDEV_BUFFER_SIZE];
- int head;
- int tail;
- struct fasync_struct *fasync;
- struct evdev *evdev;
- struct evdev_list *next;
-};
-
-static struct evdev *evdev_table[EVDEV_MINORS] = { NULL, /* ... */ };
-
-static void evdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
-{
- struct evdev *evdev = handle->private;
- struct evdev_list *list = evdev->list;
-
- while (list) {
-
- get_fast_time(&list->buffer[list->head].time);
- list->buffer[list->head].type = type;
- list->buffer[list->head].code = code;
- list->buffer[list->head].value = value;
- list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1);
-
- kill_fasync(&list->fasync, SIGIO, POLL_IN);
-
- list = list->next;
- }
-
- wake_up_interruptible(&evdev->wait);
-}
-
-static int evdev_fasync(int fd, struct file *file, int on)
-{
- int retval;
- struct evdev_list *list = file->private_data;
- retval = fasync_helper(fd, file, on, &list->fasync);
- return retval < 0 ? retval : 0;
-}
-
-static int evdev_release(struct inode * inode, struct file * file)
-{
- struct evdev_list *list = file->private_data;
- struct evdev_list **listptr;
-
- lock_kernel();
- listptr = &list->evdev->list;
- evdev_fasync(-1, file, 0);
-
- while (*listptr && (*listptr != list))
- listptr = &((*listptr)->next);
- *listptr = (*listptr)->next;
-
- if (!--list->evdev->open) {
- if (list->evdev->exist) {
- input_close_device(&list->evdev->handle);
- } else {
- input_unregister_minor(list->evdev->devfs);
- evdev_table[list->evdev->minor] = NULL;
- kfree(list->evdev);
- }
- }
-
- kfree(list);
- unlock_kernel();
-
- return 0;
-}
-
-static int evdev_open(struct inode * inode, struct file * file)
-{
- struct evdev_list *list;
- int i = MINOR(inode->i_rdev) - EVDEV_MINOR_BASE;
-
- if (i > EVDEV_MINORS || !evdev_table[i])
- return -ENODEV;
-
- if (!(list = kmalloc(sizeof(struct evdev_list), GFP_KERNEL)))
- return -ENOMEM;
- memset(list, 0, sizeof(struct evdev_list));
-
- list->evdev = evdev_table[i];
- list->next = evdev_table[i]->list;
- evdev_table[i]->list = list;
-
- file->private_data = list;
-
- if (!list->evdev->open++)
- if (list->evdev->exist)
- input_open_device(&list->evdev->handle);
-
- return 0;
-}
-
-static ssize_t evdev_write(struct file * file, const char * buffer, size_t count, loff_t *ppos)
-{
- return -EINVAL;
-}
-
-static ssize_t evdev_read(struct file * file, char * buffer, size_t count, loff_t *ppos)
-{
- DECLARE_WAITQUEUE(wait, current);
- struct evdev_list *list = file->private_data;
- int retval = 0;
-
- if (list->head == list->tail) {
-
- add_wait_queue(&list->evdev->wait, &wait);
- current->state = TASK_INTERRUPTIBLE;
-
- while (list->head == list->tail) {
-
- if (file->f_flags & O_NONBLOCK) {
- retval = -EAGAIN;
- break;
- }
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-
- schedule();
- }
-
- current->state = TASK_RUNNING;
- remove_wait_queue(&list->evdev->wait, &wait);
- }
-
- if (retval)
- return retval;
-
- while (list->head != list->tail && retval + sizeof(struct input_event) <= count) {
- if (copy_to_user(buffer + retval, list->buffer + list->tail,
- sizeof(struct input_event))) return -EFAULT;
- list->tail = (list->tail + 1) & (EVDEV_BUFFER_SIZE - 1);
- retval += sizeof(struct input_event);
- }
-
- return retval;
-}
-
-/* No kernel lock - fine */
-static unsigned int evdev_poll(struct file *file, poll_table *wait)
-{
- struct evdev_list *list = file->private_data;
- poll_wait(file, &list->evdev->wait, wait);
- if (list->head != list->tail)
- return POLLIN | POLLRDNORM;
- return 0;
-}
-
-static int evdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct evdev_list *list = file->private_data;
- struct evdev *evdev = list->evdev;
- struct input_dev *dev = evdev->handle.dev;
- int retval;
-
- switch (cmd) {
-
- case EVIOCGVERSION:
- return put_user(EV_VERSION, (int *) arg);
-
- case EVIOCGID:
- if ((retval = put_user(dev->idbus, ((short *) arg) + 0))) return retval;
- if ((retval = put_user(dev->idvendor, ((short *) arg) + 1))) return retval;
- if ((retval = put_user(dev->idproduct, ((short *) arg) + 2))) return retval;
- if ((retval = put_user(dev->idversion, ((short *) arg) + 3))) return retval;
- return 0;
-
- default:
-
- if (_IOC_TYPE(cmd) != 'E' || _IOC_DIR(cmd) != _IOC_READ)
- return -EINVAL;
-
- if ((_IOC_NR(cmd) & ~EV_MAX) == _IOC_NR(EVIOCGBIT(0,0))) {
-
- long *bits;
- int len;
-
- switch (_IOC_NR(cmd) & EV_MAX) {
- case 0: bits = dev->evbit; len = EV_MAX; break;
- case EV_KEY: bits = dev->keybit; len = KEY_MAX; break;
- case EV_REL: bits = dev->relbit; len = REL_MAX; break;
- case EV_ABS: bits = dev->absbit; len = ABS_MAX; break;
- case EV_LED: bits = dev->ledbit; len = LED_MAX; break;
- case EV_SND: bits = dev->sndbit; len = SND_MAX; break;
- default: return -EINVAL;
- }
- len = NBITS(len) * sizeof(long);
- if (len > _IOC_SIZE(cmd)) {
- printk(KERN_WARNING "evdev.c: Truncating bitfield length from %d to %d\n",
- len, _IOC_SIZE(cmd));
- len = _IOC_SIZE(cmd);
- }
- return copy_to_user((char *) arg, bits, len) ? -EFAULT : len;
- }
-
- if (_IOC_NR(cmd) == _IOC_NR(EVIOCGNAME(0))) {
- int len;
- if (!dev->name) return 0;
- len = strlen(dev->name) + 1;
- if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
- return copy_to_user((char *) arg, dev->name, len) ? -EFAULT : len;
- }
-
- if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) {
-
- int t = _IOC_NR(cmd) & ABS_MAX;
-
- if ((retval = put_user(dev->abs[t], ((int *) arg) + 0))) return retval;
- if ((retval = put_user(dev->absmin[t], ((int *) arg) + 1))) return retval;
- if ((retval = put_user(dev->absmax[t], ((int *) arg) + 2))) return retval;
- if ((retval = put_user(dev->absfuzz[t], ((int *) arg) + 3))) return retval;
- if ((retval = put_user(dev->absflat[t], ((int *) arg) + 4))) return retval;
-
- return 0;
- }
- }
- return -EINVAL;
-}
-
-static struct file_operations evdev_fops = {
- owner: THIS_MODULE,
- read: evdev_read,
- write: evdev_write,
- poll: evdev_poll,
- open: evdev_open,
- release: evdev_release,
- ioctl: evdev_ioctl,
- fasync: evdev_fasync,
-};
-
-static struct input_handle *evdev_connect(struct input_handler *handler, struct input_dev *dev)
-{
- struct evdev *evdev;
- int minor;
-
- for (minor = 0; minor < EVDEV_MINORS && evdev_table[minor]; minor++);
- if (evdev_table[minor]) {
- printk(KERN_ERR "evdev: no more free evdev devices\n");
- return NULL;
- }
-
- if (!(evdev = kmalloc(sizeof(struct evdev), GFP_KERNEL)))
- return NULL;
- memset(evdev, 0, sizeof(struct evdev));
-
- init_waitqueue_head(&evdev->wait);
-
- evdev->minor = minor;
- evdev_table[minor] = evdev;
-
- evdev->handle.dev = dev;
- evdev->handle.handler = handler;
- evdev->handle.private = evdev;
-
- evdev->exist = 1;
-
- evdev->devfs = input_register_minor("event%d", minor, EVDEV_MINOR_BASE);
-
- printk(KERN_INFO "event%d: Event device for input%d\n", minor, dev->number);
-
- return &evdev->handle;
-}
-
-static void evdev_disconnect(struct input_handle *handle)
-{
- struct evdev *evdev = handle->private;
-
- evdev->exist = 0;
-
- if (evdev->open) {
- input_close_device(handle);
- } else {
- input_unregister_minor(evdev->devfs);
- evdev_table[evdev->minor] = NULL;
- kfree(evdev);
- }
-}
-
-static struct input_handler evdev_handler = {
- event: evdev_event,
- connect: evdev_connect,
- disconnect: evdev_disconnect,
- fops: &evdev_fops,
- minor: EVDEV_MINOR_BASE,
-};
-
-static int __init evdev_init(void)
-{
- input_register_handler(&evdev_handler);
- return 0;
-}
-
-static void __exit evdev_exit(void)
-{
- input_unregister_handler(&evdev_handler);
-}
-
-module_init(evdev_init);
-module_exit(evdev_exit);
-
-MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
-MODULE_DESCRIPTION("Event character device driver");