patch-2.4.0-test7 linux/drivers/usb/mousedev.c

• Lines: 487
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/usb/mousedev.c
• Orig date: Wed Aug 9 19:19:51 2000

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/usb/mousedev.c linux/drivers/usb/mousedev.c
@@ -1,486 +0,0 @@
-/*
- * $Id: mousedev.c,v 1.10 2000/06/23 09:23:00 vojtech Exp $
- *
- *  Copyright (c) 1999-2000 Vojtech Pavlik
- *
- *  Input driver to PS/2 or ImPS/2 device driver module.
- *
- *  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 MOUSEDEV_MINOR_BASE 	32
-#define MOUSEDEV_MINORS		32
-#define MOUSEDEV_MIX		31
-
-#include <linux/malloc.h>
-#include <linux/poll.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/config.h>
-#include <linux/smp_lock.h>
-
-#ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_X
-#define CONFIG_INPUT_MOUSEDEV_SCREEN_X	1024
-#endif
-#ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_Y
-#define CONFIG_INPUT_MOUSEDEV_SCREEN_Y	768
-#endif
-
-struct mousedev {
-	int exist;
-	int open;
-	int minor;
-	wait_queue_head_t wait;
-	struct mousedev_list *list;
-	struct input_handle handle;
-	devfs_handle_t devfs;
-};
-
-struct mousedev_list {
-	struct fasync_struct *fasync;
-	struct mousedev *mousedev;
-	struct mousedev_list *next;
-	int dx, dy, dz, oldx, oldy;
-	char ps2[6];
-	unsigned long buttons;
-	unsigned char ready, buffer, bufsiz;
-	unsigned char mode, genseq, impseq;
-};
-
-#define MOUSEDEV_GENIUS_LEN	5
-#define MOUSEDEV_IMPS_LEN	6
-
-static unsigned char mousedev_genius_seq[] = { 0xe8, 3, 0xe6, 0xe6, 0xe6 };
-static unsigned char mousedev_imps_seq[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 };
-
-static struct input_handler mousedev_handler;
-
-static struct mousedev *mousedev_table[MOUSEDEV_MINORS];
-static struct mousedev mousedev_mix;
-
-static void mousedev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
-{
-	struct mousedev *mousedevs[3] = { handle->private, &mousedev_mix, NULL };
-	struct mousedev **mousedev = mousedevs;
-	struct mousedev_list *list;
-	int index, size;
-
-	while (*mousedev) {
-		list = (*mousedev)->list;
-		while (list) {
-			switch (type) {
-				case EV_ABS:
-					switch (code) {
-						case ABS_X:	
-							size = handle->dev->absmax[ABS_X] - handle->dev->absmin[ABS_X];
-							list->dx += (value * CONFIG_INPUT_MOUSEDEV_SCREEN_X - list->oldx) / size;
-							list->oldx += list->dx * size;
-							break;
-						case ABS_Y:
-							size = handle->dev->absmax[ABS_Y] - handle->dev->absmin[ABS_Y];
-							list->dy -= (value * CONFIG_INPUT_MOUSEDEV_SCREEN_Y - list->oldy) / size;
-							list->oldy -= list->dy * size;
-							break;
-					}
-					break;
-				case EV_REL:
-					switch (code) {
-						case REL_X:	list->dx += value; break;
-						case REL_Y:	list->dy -= value; break;
-						case REL_WHEEL:	if (list->mode) list->dz -= value; break;
-					}
-					break;
-
-				case EV_KEY:
-					switch (code) {
-						case BTN_0:
-						case BTN_TOUCH:
-						case BTN_LEFT:   index = 0; break;
-						case BTN_4:
-						case BTN_EXTRA:  if (list->mode > 1) { index = 4; break; }
-						case BTN_STYLUS:
-						case BTN_1:
-						case BTN_RIGHT:  index = 1; break;
-						case BTN_3:
-						case BTN_SIDE:   if (list->mode > 1) { index = 3; break; }
-						case BTN_2:
-						case BTN_STYLUS2:
-						case BTN_MIDDLE: index = 2; break;	
-						default: return;
-					}
-					switch (value) {
-						case 0: clear_bit(index, &list->buttons); break;
-						case 1: set_bit(index, &list->buttons); break;
-						case 2: return;
-					}
-					break;
-			}
-					
-			list->ready = 1;
-
-			kill_fasync(&list->fasync, SIGIO, POLL_IN);
-
-			list = list->next;
-		}
-
-		wake_up_interruptible(&((*mousedev)->wait));
-		mousedev++;
-	}
-}
-
-static int mousedev_fasync(int fd, struct file *file, int on)
-{
-	int retval;
-	struct mousedev_list *list = file->private_data;
-	retval = fasync_helper(fd, file, on, &list->fasync);
-	return retval < 0 ? retval : 0;
-}
-
-static int mousedev_release(struct inode * inode, struct file * file)
-{
-	struct mousedev_list *list = file->private_data;
-	struct mousedev_list **listptr;
-
-	lock_kernel();
-	listptr = &list->mousedev->list;
-	mousedev_fasync(-1, file, 0);
-
-	while (*listptr && (*listptr != list))
-		listptr = &((*listptr)->next);
-	*listptr = (*listptr)->next;
-
-	if (!--list->mousedev->open) {
-		if (list->mousedev->minor == MOUSEDEV_MIX) {
-			struct input_handle *handle = mousedev_handler.handle;
-			while (handle) {
-				struct mousedev *mousedev = handle->private;
-				if (!mousedev->open) {
-					if (mousedev->exist) {
-						input_close_device(&mousedev->handle);
-					} else {
-						input_unregister_minor(mousedev->devfs);
-						mousedev_table[mousedev->minor] = NULL;
-						kfree(mousedev);
-					}
-				}
-				handle = handle->hnext;
-			}
-		} else {
-			if (!mousedev_mix.open) {
-				if (list->mousedev->exist) {
-					input_close_device(&list->mousedev->handle);
-				} else {
-					input_unregister_minor(list->mousedev->devfs);
-					mousedev_table[list->mousedev->minor] = NULL;
-					kfree(list->mousedev);
-				}
-			}
-		}
-	}
-	
-	kfree(list);
-	unlock_kernel();
-
-	return 0;
-}
-
-static int mousedev_open(struct inode * inode, struct file * file)
-{
-	struct mousedev_list *list;
-	int i = MINOR(inode->i_rdev) - MOUSEDEV_MINOR_BASE;
-
-	if (i > MOUSEDEV_MINORS || !mousedev_table[i])
-		return -ENODEV;
-
-	if (!(list = kmalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
-		return -ENOMEM;
-	memset(list, 0, sizeof(struct mousedev_list));
-
-	list->mousedev = mousedev_table[i];
-	list->next = mousedev_table[i]->list;
-	mousedev_table[i]->list = list;
-	file->private_data = list;
-
-	if (!list->mousedev->open++) {
-		if (list->mousedev->minor == MOUSEDEV_MIX) {
-			struct input_handle *handle = mousedev_handler.handle;
-			while (handle) {
-				struct mousedev *mousedev = handle->private;
-				if (!mousedev->open)
-					if (mousedev->exist)	
-						input_open_device(handle);
-				handle = handle->hnext;
-			}
-		} else {
-			if (!mousedev_mix.open)
-				if (list->mousedev->exist)	
-					input_open_device(&list->mousedev->handle);
-		}
-	}
-
-	return 0;
-}
-
-static void mousedev_packet(struct mousedev_list *list, unsigned char off)
-{
-	list->ps2[off] = 0x08 | ((list->dx < 0) << 4) | ((list->dy < 0) << 5) | (list->buttons & 0x07);
-	list->ps2[off + 1] = (list->dx > 127 ? 127 : (list->dx < -127 ? -127 : list->dx));
-	list->ps2[off + 2] = (list->dy > 127 ? 127 : (list->dy < -127 ? -127 : list->dy));
-	list->dx -= list->ps2[off + 1];
-	list->dy -= list->ps2[off + 2];
-	list->bufsiz = off + 3;
-
-	if (list->mode > 1)
-		list->ps2[off] |= ((list->buttons & 0x30) << 2);
-	
-	if (list->mode) {
-		list->ps2[off + 3] = (list->dz > 127 ? 127 : (list->dz < -127 ? -127 : list->dz));
-		list->bufsiz++;
-		list->dz -= list->ps2[off + 3];
-	}
-	if (!list->dx && !list->dy && (!list->mode || !list->dz)) list->ready = 0;
-	list->buffer = list->bufsiz;
-}
-
-
-static ssize_t mousedev_write(struct file * file, const char * buffer, size_t count, loff_t *ppos)
-{
-	struct mousedev_list *list = file->private_data;
-	unsigned char c;
-	int i;
-
-	for (i = 0; i < count; i++) {
-
-		c = buffer[i];
-
-		if (c == mousedev_genius_seq[list->genseq]) {
-			if (++list->genseq == MOUSEDEV_GENIUS_LEN) {
-				list->genseq = 0;
-				list->ready = 1;
-				list->mode = 2;
-			}
-		} else list->genseq = 0;
-
-		if (c == mousedev_imps_seq[list->impseq]) {
-			if (++list->impseq == MOUSEDEV_IMPS_LEN) {
-				list->impseq = 0;
-				list->ready = 1;
-				list->mode = 1;
-			}
-		} else list->impseq = 0;
-
-		list->ps2[0] = 0xfa;
-		list->bufsiz = 1;
-
-		switch (c) {
-
-			case 0xeb: /* Poll */
-				mousedev_packet(list, 1);
-				break;
-
-			case 0xf2: /* Get ID */
-				list->ps2[1] = (list->mode == 1) ? 3 : 0;
-				list->bufsiz = 2;
-				break;
-
-			case 0xe9: /* Get info */
-				if (list->mode == 2) {
-					list->ps2[1] = 0x00; list->ps2[2] = 0x33; list->ps2[3] = 0x55;
-				} else {
-					list->ps2[1] = 0x60; list->ps2[2] = 3; list->ps2[3] = 200;
-				}
-				list->bufsiz = 4;
-				break;
-		}
-
-		list->buffer = list->bufsiz;
-	}
-
-	kill_fasync(&list->fasync, SIGIO, POLL_IN);
-
-	wake_up_interruptible(&list->mousedev->wait);
-		
-	return count;
-}
-
-static ssize_t mousedev_read(struct file * file, char * buffer, size_t count, loff_t *ppos)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	struct mousedev_list *list = file->private_data;
-	int retval = 0;
-
-	if (!list->ready && !list->buffer) {
-
-		add_wait_queue(&list->mousedev->wait, &wait);
-		current->state = TASK_INTERRUPTIBLE;
-
-		while (!list->ready) {
-
-			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->mousedev->wait, &wait);
-	}
-
-	if (retval)
-		return retval;
-
-	if (!list->buffer)
-		mousedev_packet(list, 0);
-
-	if (count > list->buffer)
-		count = list->buffer;
-
-	if (copy_to_user(buffer, list->ps2 + list->bufsiz - list->buffer, count))
-		return -EFAULT;
-	
-	list->buffer -= count;
-
-	return count;	
-}
-
-/* No kernel lock - fine */
-static unsigned int mousedev_poll(struct file *file, poll_table *wait)
-{
-	struct mousedev_list *list = file->private_data;
-	poll_wait(file, &list->mousedev->wait, wait);
-	if (list->ready || list->buffer)
-		return POLLIN | POLLRDNORM;
-	return 0;
-}
-
-struct file_operations mousedev_fops = {
-	owner:		THIS_MODULE,
-	read:		mousedev_read,
-	write:		mousedev_write,
-	poll:		mousedev_poll,
-	open:		mousedev_open,
-	release:	mousedev_release,
-	fasync:		mousedev_fasync,
-};
-
-static struct input_handle *mousedev_connect(struct input_handler *handler, struct input_dev *dev)
-{
-	struct mousedev *mousedev;
-	int minor = 0;
-
-	if (!test_bit(EV_KEY, dev->evbit) ||
-	   (!test_bit(BTN_LEFT, dev->keybit) && !test_bit(BTN_TOUCH, dev->keybit)))
-		return NULL;
-
-	if ((!test_bit(EV_REL, dev->evbit) || !test_bit(REL_X, dev->relbit)) &&
-	    (!test_bit(EV_ABS, dev->evbit) || !test_bit(ABS_X, dev->absbit)))
-		return NULL;
-
-	for (minor = 0; minor < MOUSEDEV_MINORS && mousedev_table[minor]; minor++);
-	if (mousedev_table[minor]) {
-		printk(KERN_ERR "mousedev: no more free mousedev devices\n");
-		return NULL;
-	}
-
-	if (!(mousedev = kmalloc(sizeof(struct mousedev), GFP_KERNEL)))
-		return NULL;
-	memset(mousedev, 0, sizeof(struct mousedev));
-	init_waitqueue_head(&mousedev->wait);
-
-	mousedev->exist = 1;
-	mousedev->minor = minor;
-	mousedev_table[minor] = mousedev;
-
-	mousedev->handle.dev = dev;
-	mousedev->handle.handler = handler;
-	mousedev->handle.private = mousedev;
-
-	mousedev->devfs = input_register_minor("mouse%d", minor, MOUSEDEV_MINOR_BASE);
-
-	if (mousedev_mix.open)
-		input_open_device(&mousedev->handle);
-
-	printk(KERN_INFO "mouse%d: PS/2 mouse device for input%d\n", minor, dev->number);
-
-	return &mousedev->handle;
-}
-
-static void mousedev_disconnect(struct input_handle *handle)
-{
-	struct mousedev *mousedev = handle->private;
-
-	mousedev->exist = 0;
-
-	if (mousedev->open) {
-		input_close_device(handle);
-	} else {
-		if (mousedev_mix.open)
-			input_close_device(handle);
-		input_unregister_minor(mousedev->devfs);
-		mousedev_table[mousedev->minor] = NULL;
-		kfree(mousedev);
-	}
-}
-	
-static struct input_handler mousedev_handler = {
-	event:		mousedev_event,
-	connect:	mousedev_connect,
-	disconnect:	mousedev_disconnect,
-	fops:		&mousedev_fops,
-	minor:		MOUSEDEV_MINOR_BASE,
-};
-
-static int __init mousedev_init(void)
-{
-	input_register_handler(&mousedev_handler);
-
-	memset(&mousedev_mix, 0, sizeof(struct mousedev));
-	init_waitqueue_head(&mousedev_mix.wait);
-	mousedev_table[MOUSEDEV_MIX] = &mousedev_mix;
-	mousedev_mix.exist = 1;
-	mousedev_mix.minor = MOUSEDEV_MIX;
-	mousedev_mix.devfs = input_register_minor("mice", MOUSEDEV_MIX, MOUSEDEV_MINOR_BASE);
-
-	printk(KERN_INFO "mice: PS/2 mouse device common for all mice\n");
-
-	return 0;
-}
-
-static void __exit mousedev_exit(void)
-{
-	input_unregister_minor(mousedev_mix.devfs);
-	input_unregister_handler(&mousedev_handler);
-}
-
-module_init(mousedev_init);
-module_exit(mousedev_exit);
-
-MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
-MODULE_DESCRIPTION("Input driver to PS/2 or ImPS/2 device driver");