drivers/usb/usbmouse.c

   1 /*
   2  * $Id: usbmouse.c,v 1.5 2000/05/29 09:01:52 vojtech Exp $
   3  *
   4  *  Copyright (c) 1999-2000 Vojtech Pavlik
   5  *
   6  *  USB HIDBP Mouse support
   7  *
   8  *  Sponsored by SuSE
   9  */
  10
  11 /*
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  25  *
  26  * Should you need to contact me, the author, you can do so either by
  27  * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
  28  * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
  29  */
  30
  31 #include <linux/kernel.h>
  32 #include <linux/malloc.h>
  33 #include <linux/input.h>
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/usb.h>
  37
  38 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
  39
  40 struct usb_mouse {
  41         signed char data[8];
  42         char name[128];
  43         struct input_dev dev;
  44         struct urb irq;
  45         int open;
  46 };
  47
  48 static void usb_mouse_irq(struct urb *urb)
  49 {
  50         struct usb_mouse *mouse = urb->context;
  51         signed char *data = mouse->data;
  52         struct input_dev *dev = &mouse->dev;
  53
  54         if (urb->status) return;
  55
  56         input_report_key(dev, BTN_LEFT,   data[0] & 0x01);
  57         input_report_key(dev, BTN_RIGHT,  data[0] & 0x02);
  58         input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
  59         input_report_key(dev, BTN_SIDE,   data[0] & 0x08);
  60         input_report_key(dev, BTN_EXTRA,  data[0] & 0x10);
  61
  62         input_report_rel(dev, REL_X,     data[1]);
  63         input_report_rel(dev, REL_Y,     data[2]);
  64         input_report_rel(dev, REL_WHEEL, data[3]);
  65 }
  66
  67 static int usb_mouse_open(struct input_dev *dev)
  68 {
  69         struct usb_mouse *mouse = dev->private;
  70
  71         if (mouse->open++)
  72                 return 0;
  73
  74         if (usb_submit_urb(&mouse->irq))
  75                 return -EIO;
  76
  77         return 0;
  78 }
  79
  80 static void usb_mouse_close(struct input_dev *dev)
  81 {
  82         struct usb_mouse *mouse = dev->private;
  83
  84         if (!--mouse->open)
  85                 usb_unlink_urb(&mouse->irq);
  86 }
  87
  88 static void *usb_mouse_probe(struct usb_device *dev, unsigned int ifnum)
  89 {
  90         struct usb_interface_descriptor *interface;
  91         struct usb_endpoint_descriptor *endpoint;
  92         struct usb_mouse *mouse;
  93         int pipe, maxp;
  94         char *buf;
  95
  96         if (dev->descriptor.bNumConfigurations != 1) return NULL;
  97         interface = dev->config[0].interface[ifnum].altsetting + 0;
  98
  99         if (interface->bInterfaceClass != 3) return NULL;
 100         if (interface->bInterfaceSubClass != 1) return NULL;
 101         if (interface->bInterfaceProtocol != 2) return NULL;
 102         if (interface->bNumEndpoints != 1) return NULL;
 103
 104         endpoint = interface->endpoint + 0;
 105         if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
 106         if ((endpoint->bmAttributes & 3) != 3) return NULL;
 107
 108         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 109         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 110
 111         usb_set_idle(dev, interface->bInterfaceNumber, 0, 0);
 112
 113         if (!(mouse = kmalloc(sizeof(struct usb_mouse), GFP_KERNEL))) return NULL;
 114         memset(mouse, 0, sizeof(struct usb_mouse));
 115
 116         mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
 117         mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 118         mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
 119         mouse->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
 120         mouse->dev.relbit[0] |= BIT(REL_WHEEL);
 121
 122         mouse->dev.private = mouse;
 123         mouse->dev.open = usb_mouse_open;
 124         mouse->dev.close = usb_mouse_close;
 125
 126         mouse->dev.name = mouse->name;
 127         mouse->dev.idbus = BUS_USB;
 128         mouse->dev.idvendor = dev->descriptor.idVendor;
 129         mouse->dev.idproduct = dev->descriptor.idProduct;
 130         mouse->dev.idversion = dev->descriptor.bcdDevice;
 131
 132         if (!(buf = kmalloc(63, GFP_KERNEL))) {
 133                 kfree(mouse);
 134                 return NULL;
 135         }
 136
 137         if (dev->descriptor.iManufacturer &&
 138                 usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
 139                         strcat(mouse->name, buf);
 140         if (dev->descriptor.iProduct &&
 141                 usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
 142                         sprintf(mouse->name, "%s %s", mouse->name, buf);
 143
 144         if (!strlen(mouse->name))
 145                 sprintf(mouse->name, "USB HIDBP Mouse %04x:%04x",
 146                         mouse->dev.idvendor, mouse->dev.idproduct);
 147
 148         kfree(buf);
 149
 150         FILL_INT_URB(&mouse->irq, dev, pipe, mouse->data, maxp > 8 ? 8 : maxp,
 151                 usb_mouse_irq, mouse, endpoint->bInterval);
 152
 153         input_register_device(&mouse->dev);
 154
 155         printk(KERN_INFO "input%d: %s on usb%d:%d.%d\n",
 156                  mouse->dev.number, mouse->name, dev->bus->busnum, dev->devnum, ifnum);
 157
 158         return mouse;
 159 }
 160
 161 static void usb_mouse_disconnect(struct usb_device *dev, void *ptr)
 162 {
 163         struct usb_mouse *mouse = ptr;
 164         usb_unlink_urb(&mouse->irq);
 165         input_unregister_device(&mouse->dev);
 166         kfree(mouse);
 167 }
 168
 169 static struct usb_driver usb_mouse_driver = {
 170         name:           "usb_mouse",
 171         probe:          usb_mouse_probe,
 172         disconnect:     usb_mouse_disconnect,
 173 };
 174
 175 static int __init usb_mouse_init(void)
 176 {
 177         usb_register(&usb_mouse_driver);
 178         return 0;
 179 }
 180
 181 static void __exit usb_mouse_exit(void)
 182 {
 183         usb_deregister(&usb_mouse_driver);
 184 }
 185
 186 module_init(usb_mouse_init);
 187 module_exit(usb_mouse_exit);