From 1a1d77dd589de5a567fa95e36aa6999c704ceca4 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Mon, 28 Aug 2000 22:00:09 +0000 Subject: Merge with 2.4.0-test7. --- drivers/usb/evdev.c | 356 ---------------------------------------------------- 1 file changed, 356 deletions(-) delete mode 100644 drivers/usb/evdev.c (limited to 'drivers/usb/evdev.c') 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 , 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 -#include -#include -#include -#include -#include - -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 "); -MODULE_DESCRIPTION("Event character device driver"); -- cgit v1.2.3