/*
* $Id: usbmouse.c,v 1.15 2001/12/27 10:37:41 vojtech 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"
#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_kill_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];
interface = intf->cur_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;
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 = le16_to_cpu(dev->descriptor.idVendor);
mouse->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
mouse->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
mouse->dev.dev = &intf->dev;
if (dev->manufacturer)
strcat(mouse->name, dev->manufacturer);
if (dev->product)
sprintf(mouse->name, "%s %s", mouse->name, dev->product);
if (!strlen(mouse->name))
sprintf(mouse->name, "USB HIDBP Mouse %04x:%04x",
mouse->dev.id.vendor, mouse->dev.id.product);
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_kill_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);
