Logo Search packages:      
Sourcecode: wacom-tools version File versions

usbmouse.c

/*
 * $Id: usbmouse.c,v 1.1 2004/03/03 01:10:20 pingc Exp $
 *
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 *
 *  USB HIDBP Mouse support
 */

/*
 * 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@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.h>

/*
 * Version Information
 */
#define DRIVER_VERSION "v1.6 - 2.6.2-pc-0.1"
#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
#define DRIVER_DESC "USB HID Boot Protocol mouse driver"
#define DRIVER_LICENSE "GPL"

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);

struct usb_mouse {
      char name[128];
      char phys[64];
      struct usb_device *usbdev;
      struct input_dev dev;
      struct urb *irq;
      int open;

      signed char *data;
      dma_addr_t data_dma;
};

static void usb_mouse_irq(struct urb *urb, struct pt_regs *regs)
{
      struct usb_mouse *mouse = urb->context;
      signed char *data = mouse->data;
      struct input_dev *dev = &mouse->dev;
      int status;

      switch (urb->status) {
      case 0:                 /* success */
            break;
      case -ECONNRESET: /* unlink */
      case -ENOENT:
      case -ESHUTDOWN:
            return;
      /* -EPIPE:  should clear the halt */
      default:          /* error */
            goto resubmit;
      }

      input_regs(dev, regs);

      input_report_key(dev, BTN_LEFT,   data[0] & 0x01);
      input_report_key(dev, BTN_RIGHT,  data[0] & 0x02);
      input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
      input_report_key(dev, BTN_SIDE,   data[0] & 0x08);
      input_report_key(dev, BTN_EXTRA,  data[0] & 0x10);

      input_report_rel(dev, REL_X,     data[1]);
      input_report_rel(dev, REL_Y,     data[2]);
      input_report_rel(dev, REL_WHEEL, data[3]);

      input_sync(dev);
resubmit:
      status = usb_submit_urb (urb, SLAB_ATOMIC);
      if (status)
            err ("can't resubmit intr, %s-%s/input0, status %d",
                        mouse->usbdev->bus->bus_name,
                        mouse->usbdev->devpath, status);
}

static int usb_mouse_open(struct input_dev *dev)
{
      struct usb_mouse *mouse = dev->private;

      if (mouse->open++)
            return 0;

      mouse->irq->dev = mouse->usbdev;
      if (usb_submit_urb(mouse->irq, GFP_KERNEL)) {
            mouse->open--;
            return -EIO;
      }

      return 0;
}

static void usb_mouse_close(struct input_dev *dev)
{
      struct usb_mouse *mouse = dev->private;

      if (!--mouse->open)
            usb_unlink_urb(mouse->irq);
}

static int usb_mouse_probe(struct usb_interface * intf, const struct usb_device_id * id)
{
      struct usb_device * dev = interface_to_usbdev(intf);
      struct usb_host_interface *interface;
      struct usb_endpoint_descriptor *endpoint;
      struct usb_mouse *mouse;
      int pipe, maxp;
      char path[64];
      char *buf;

      interface = &intf->altsetting[intf->act_altsetting];

      if (interface->desc.bNumEndpoints != 1) 
            return -ENODEV;

      endpoint = &interface->endpoint[0].desc;
      if (!(endpoint->bEndpointAddress & 0x80)) 
            return -ENODEV;
      if ((endpoint->bmAttributes & 3) != 3) 
            return -ENODEV;

      /* Wacom tablets match. Let wacom driver take care of it. */
      if (dev->descriptor.idVendor == 0x056a)
      {
            return 0;
      }

      pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
      maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));

      if (!(mouse = kmalloc(sizeof(struct usb_mouse), GFP_KERNEL))) 
            return -ENOMEM;
      memset(mouse, 0, sizeof(struct usb_mouse));

      mouse->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &mouse->data_dma);
      if (!mouse->data) {
            kfree(mouse);
            return -ENOMEM;
      }

      mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
      if (!mouse->irq) {
            usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
            kfree(mouse);
            return -ENODEV;
      }

      mouse->usbdev = dev;

      mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
      mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
      mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
      mouse->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
      mouse->dev.relbit[0] |= BIT(REL_WHEEL);

      mouse->dev.private = mouse;
      mouse->dev.open = usb_mouse_open;
      mouse->dev.close = usb_mouse_close;

      usb_make_path(dev, path, 64);
      sprintf(mouse->phys, "%s/input0", path);

      mouse->dev.name = mouse->name;
      mouse->dev.phys = mouse->phys;
      mouse->dev.id.bustype = BUS_USB;
      mouse->dev.id.vendor = dev->descriptor.idVendor;
      mouse->dev.id.product = dev->descriptor.idProduct;
      mouse->dev.id.version = dev->descriptor.bcdDevice;
      mouse->dev.dev = &intf->dev;

      if (!(buf = kmalloc(63, GFP_KERNEL))) {
            usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
            kfree(mouse);
            return -ENOMEM;
      }

      if (dev->descriptor.iManufacturer &&
            usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
                  strcat(mouse->name, buf);
      if (dev->descriptor.iProduct &&
            usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
                  sprintf(mouse->name, "%s %s", mouse->name, buf);

      if (!strlen(mouse->name))
            sprintf(mouse->name, "USB HIDBP Mouse %04x:%04x",
                  mouse->dev.id.vendor, mouse->dev.id.product);

      kfree(buf);

      usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
                   (maxp > 8 ? 8 : maxp),
                   usb_mouse_irq, mouse, endpoint->bInterval);
      mouse->irq->transfer_dma = mouse->data_dma;
      mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

      input_register_device(&mouse->dev);
      printk(KERN_INFO "input: %s on %s\n", mouse->name, path);

      usb_set_intfdata(intf, mouse);
      return 0;
}

static void usb_mouse_disconnect(struct usb_interface *intf)
{
      struct usb_mouse *mouse = usb_get_intfdata (intf);
      
      usb_set_intfdata(intf, NULL);
      if (mouse) {
            usb_unlink_urb(mouse->irq);
            input_unregister_device(&mouse->dev);
            usb_free_urb(mouse->irq);
            usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
            kfree(mouse);
      }
}

static struct usb_device_id usb_mouse_id_table [] = {
      { USB_INTERFACE_INFO(3, 1, 2) },
    { }                                   /* Terminating entry */
};

MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);

static struct usb_driver usb_mouse_driver = {
      .owner            = THIS_MODULE,
      .name       = "usbmouse",
      .probe            = usb_mouse_probe,
      .disconnect = usb_mouse_disconnect,
      .id_table   = usb_mouse_id_table,
};

static int __init usb_mouse_init(void)
{
      int retval = usb_register(&usb_mouse_driver);
      if (retval == 0) 
            info(DRIVER_VERSION ":" DRIVER_DESC);
      return retval;
}

static void __exit usb_mouse_exit(void)
{
      usb_deregister(&usb_mouse_driver);
}

module_init(usb_mouse_init);
module_exit(usb_mouse_exit);

Generated by  Doxygen 1.6.0   Back to index