Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial
[linux-2.6] / drivers / usb / input / usbmouse.c
1 /*
2  * $Id: usbmouse.c,v 1.15 2001/12/27 10:37:41 vojtech Exp $
3  *
4  *  Copyright (c) 1999-2001 Vojtech Pavlik
5  *
6  *  USB HIDBP Mouse support
7  */
8
9 /*
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23  *
24  * Should you need to contact me, the author, you can do so either by
25  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
26  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
27  */
28
29 #include <linux/kernel.h>
30 #include <linux/slab.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/usb/input.h>
34
35 /*
36  * Version Information
37  */
38 #define DRIVER_VERSION "v1.6"
39 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
40 #define DRIVER_DESC "USB HID Boot Protocol mouse driver"
41 #define DRIVER_LICENSE "GPL"
42
43 MODULE_AUTHOR(DRIVER_AUTHOR);
44 MODULE_DESCRIPTION(DRIVER_DESC);
45 MODULE_LICENSE(DRIVER_LICENSE);
46
47 struct usb_mouse {
48         char name[128];
49         char phys[64];
50         struct usb_device *usbdev;
51         struct input_dev *dev;
52         struct urb *irq;
53
54         signed char *data;
55         dma_addr_t data_dma;
56 };
57
58 static void usb_mouse_irq(struct urb *urb, struct pt_regs *regs)
59 {
60         struct usb_mouse *mouse = urb->context;
61         signed char *data = mouse->data;
62         struct input_dev *dev = mouse->dev;
63         int status;
64
65         switch (urb->status) {
66         case 0:                 /* success */
67                 break;
68         case -ECONNRESET:       /* unlink */
69         case -ENOENT:
70         case -ESHUTDOWN:
71                 return;
72         /* -EPIPE:  should clear the halt */
73         default:                /* error */
74                 goto resubmit;
75         }
76
77         input_regs(dev, regs);
78
79         input_report_key(dev, BTN_LEFT,   data[0] & 0x01);
80         input_report_key(dev, BTN_RIGHT,  data[0] & 0x02);
81         input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
82         input_report_key(dev, BTN_SIDE,   data[0] & 0x08);
83         input_report_key(dev, BTN_EXTRA,  data[0] & 0x10);
84
85         input_report_rel(dev, REL_X,     data[1]);
86         input_report_rel(dev, REL_Y,     data[2]);
87         input_report_rel(dev, REL_WHEEL, data[3]);
88
89         input_sync(dev);
90 resubmit:
91         status = usb_submit_urb (urb, SLAB_ATOMIC);
92         if (status)
93                 err ("can't resubmit intr, %s-%s/input0, status %d",
94                                 mouse->usbdev->bus->bus_name,
95                                 mouse->usbdev->devpath, status);
96 }
97
98 static int usb_mouse_open(struct input_dev *dev)
99 {
100         struct usb_mouse *mouse = dev->private;
101
102         mouse->irq->dev = mouse->usbdev;
103         if (usb_submit_urb(mouse->irq, GFP_KERNEL))
104                 return -EIO;
105
106         return 0;
107 }
108
109 static void usb_mouse_close(struct input_dev *dev)
110 {
111         struct usb_mouse *mouse = dev->private;
112
113         usb_kill_urb(mouse->irq);
114 }
115
116 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
117 {
118         struct usb_device *dev = interface_to_usbdev(intf);
119         struct usb_host_interface *interface;
120         struct usb_endpoint_descriptor *endpoint;
121         struct usb_mouse *mouse;
122         struct input_dev *input_dev;
123         int pipe, maxp;
124
125         interface = intf->cur_altsetting;
126
127         if (interface->desc.bNumEndpoints != 1)
128                 return -ENODEV;
129
130         endpoint = &interface->endpoint[0].desc;
131         if (!(endpoint->bEndpointAddress & USB_DIR_IN))
132                 return -ENODEV;
133         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
134                 return -ENODEV;
135
136         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
137         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
138
139         mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
140         input_dev = input_allocate_device();
141         if (!mouse || !input_dev)
142                 goto fail1;
143
144         mouse->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &mouse->data_dma);
145         if (!mouse->data)
146                 goto fail1;
147
148         mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
149         if (!mouse->irq)
150                 goto fail2;
151
152         mouse->usbdev = dev;
153         mouse->dev = input_dev;
154
155         if (dev->manufacturer)
156                 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));
157
158         if (dev->product) {
159                 if (dev->manufacturer)
160                         strlcat(mouse->name, " ", sizeof(mouse->name));
161                 strlcat(mouse->name, dev->product, sizeof(mouse->name));
162         }
163
164         if (!strlen(mouse->name))
165                 snprintf(mouse->name, sizeof(mouse->name),
166                          "USB HIDBP Mouse %04x:%04x",
167                          le16_to_cpu(dev->descriptor.idVendor),
168                          le16_to_cpu(dev->descriptor.idProduct));
169
170         usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
171         strlcat(mouse->phys, "/input0", sizeof(mouse->phys));
172
173         input_dev->name = mouse->name;
174         input_dev->phys = mouse->phys;
175         usb_to_input_id(dev, &input_dev->id);
176         input_dev->cdev.dev = &intf->dev;
177
178         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
179         input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
180         input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
181         input_dev->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
182         input_dev->relbit[0] |= BIT(REL_WHEEL);
183
184         input_dev->private = mouse;
185         input_dev->open = usb_mouse_open;
186         input_dev->close = usb_mouse_close;
187
188         usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
189                          (maxp > 8 ? 8 : maxp),
190                          usb_mouse_irq, mouse, endpoint->bInterval);
191         mouse->irq->transfer_dma = mouse->data_dma;
192         mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
193
194         input_register_device(mouse->dev);
195
196         usb_set_intfdata(intf, mouse);
197         return 0;
198
199 fail2:  usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
200 fail1:  input_free_device(input_dev);
201         kfree(mouse);
202         return -ENOMEM;
203 }
204
205 static void usb_mouse_disconnect(struct usb_interface *intf)
206 {
207         struct usb_mouse *mouse = usb_get_intfdata (intf);
208
209         usb_set_intfdata(intf, NULL);
210         if (mouse) {
211                 usb_kill_urb(mouse->irq);
212                 input_unregister_device(mouse->dev);
213                 usb_free_urb(mouse->irq);
214                 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
215                 kfree(mouse);
216         }
217 }
218
219 static struct usb_device_id usb_mouse_id_table [] = {
220         { USB_INTERFACE_INFO(3, 1, 2) },
221     { }                                         /* Terminating entry */
222 };
223
224 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
225
226 static struct usb_driver usb_mouse_driver = {
227         .name           = "usbmouse",
228         .probe          = usb_mouse_probe,
229         .disconnect     = usb_mouse_disconnect,
230         .id_table       = usb_mouse_id_table,
231 };
232
233 static int __init usb_mouse_init(void)
234 {
235         int retval = usb_register(&usb_mouse_driver);
236         if (retval == 0)
237                 info(DRIVER_VERSION ":" DRIVER_DESC);
238         return retval;
239 }
240
241 static void __exit usb_mouse_exit(void)
242 {
243         usb_deregister(&usb_mouse_driver);
244 }
245
246 module_init(usb_mouse_init);
247 module_exit(usb_mouse_exit);