Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / drivers / hid / usbhid / usbmouse.c
1 /*
2  *  Copyright (c) 1999-2001 Vojtech Pavlik
3  *
4  *  USB HIDBP Mouse support
5  */
6
7 /*
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  *
22  * Should you need to contact me, the author, you can do so either by
23  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
24  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
25  */
26
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/usb/input.h>
32 #include <linux/hid.h>
33
34 /*
35  * Version Information
36  */
37 #define DRIVER_VERSION "v1.6"
38 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
39 #define DRIVER_DESC "USB HID Boot Protocol mouse driver"
40 #define DRIVER_LICENSE "GPL"
41
42 MODULE_AUTHOR(DRIVER_AUTHOR);
43 MODULE_DESCRIPTION(DRIVER_DESC);
44 MODULE_LICENSE(DRIVER_LICENSE);
45
46 struct usb_mouse {
47         char name[128];
48         char phys[64];
49         struct usb_device *usbdev;
50         struct input_dev *dev;
51         struct urb *irq;
52
53         signed char *data;
54         dma_addr_t data_dma;
55 };
56
57 static void usb_mouse_irq(struct urb *urb)
58 {
59         struct usb_mouse *mouse = urb->context;
60         signed char *data = mouse->data;
61         struct input_dev *dev = mouse->dev;
62         int status;
63
64         switch (urb->status) {
65         case 0:                 /* success */
66                 break;
67         case -ECONNRESET:       /* unlink */
68         case -ENOENT:
69         case -ESHUTDOWN:
70                 return;
71         /* -EPIPE:  should clear the halt */
72         default:                /* error */
73                 goto resubmit;
74         }
75
76         input_report_key(dev, BTN_LEFT,   data[0] & 0x01);
77         input_report_key(dev, BTN_RIGHT,  data[0] & 0x02);
78         input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
79         input_report_key(dev, BTN_SIDE,   data[0] & 0x08);
80         input_report_key(dev, BTN_EXTRA,  data[0] & 0x10);
81
82         input_report_rel(dev, REL_X,     data[1]);
83         input_report_rel(dev, REL_Y,     data[2]);
84         input_report_rel(dev, REL_WHEEL, data[3]);
85
86         input_sync(dev);
87 resubmit:
88         status = usb_submit_urb (urb, GFP_ATOMIC);
89         if (status)
90                 err ("can't resubmit intr, %s-%s/input0, status %d",
91                                 mouse->usbdev->bus->bus_name,
92                                 mouse->usbdev->devpath, status);
93 }
94
95 static int usb_mouse_open(struct input_dev *dev)
96 {
97         struct usb_mouse *mouse = input_get_drvdata(dev);
98
99         mouse->irq->dev = mouse->usbdev;
100         if (usb_submit_urb(mouse->irq, GFP_KERNEL))
101                 return -EIO;
102
103         return 0;
104 }
105
106 static void usb_mouse_close(struct input_dev *dev)
107 {
108         struct usb_mouse *mouse = input_get_drvdata(dev);
109
110         usb_kill_urb(mouse->irq);
111 }
112
113 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
114 {
115         struct usb_device *dev = interface_to_usbdev(intf);
116         struct usb_host_interface *interface;
117         struct usb_endpoint_descriptor *endpoint;
118         struct usb_mouse *mouse;
119         struct input_dev *input_dev;
120         int pipe, maxp;
121         int error = -ENOMEM;
122
123         interface = intf->cur_altsetting;
124
125         if (interface->desc.bNumEndpoints != 1)
126                 return -ENODEV;
127
128         endpoint = &interface->endpoint[0].desc;
129         if (!usb_endpoint_is_int_in(endpoint))
130                 return -ENODEV;
131
132 #ifdef CONFIG_USB_HID
133         if (usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
134                                 le16_to_cpu(dev->descriptor.idProduct))
135                         & (HID_QUIRK_IGNORE|HID_QUIRK_IGNORE_MOUSE)) {
136                 return -ENODEV;
137         }
138 #endif
139
140         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
141         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
142
143         mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
144         input_dev = input_allocate_device();
145         if (!mouse || !input_dev)
146                 goto fail1;
147
148         mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma);
149         if (!mouse->data)
150                 goto fail1;
151
152         mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
153         if (!mouse->irq)
154                 goto fail2;
155
156         mouse->usbdev = dev;
157         mouse->dev = input_dev;
158
159         if (dev->manufacturer)
160                 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));
161
162         if (dev->product) {
163                 if (dev->manufacturer)
164                         strlcat(mouse->name, " ", sizeof(mouse->name));
165                 strlcat(mouse->name, dev->product, sizeof(mouse->name));
166         }
167
168         if (!strlen(mouse->name))
169                 snprintf(mouse->name, sizeof(mouse->name),
170                          "USB HIDBP Mouse %04x:%04x",
171                          le16_to_cpu(dev->descriptor.idVendor),
172                          le16_to_cpu(dev->descriptor.idProduct));
173
174         usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
175         strlcat(mouse->phys, "/input0", sizeof(mouse->phys));
176
177         input_dev->name = mouse->name;
178         input_dev->phys = mouse->phys;
179         usb_to_input_id(dev, &input_dev->id);
180         input_dev->dev.parent = &intf->dev;
181
182         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
183         input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
184                 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
185         input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
186         input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) |
187                 BIT_MASK(BTN_EXTRA);
188         input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
189
190         input_set_drvdata(input_dev, mouse);
191
192         input_dev->open = usb_mouse_open;
193         input_dev->close = usb_mouse_close;
194
195         usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
196                          (maxp > 8 ? 8 : maxp),
197                          usb_mouse_irq, mouse, endpoint->bInterval);
198         mouse->irq->transfer_dma = mouse->data_dma;
199         mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
200
201         error = input_register_device(mouse->dev);
202         if (error)
203                 goto fail3;
204
205         usb_set_intfdata(intf, mouse);
206         return 0;
207
208 fail3:  
209         usb_free_urb(mouse->irq);
210 fail2:  
211         usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
212 fail1:  
213         input_free_device(input_dev);
214         kfree(mouse);
215         return error;
216 }
217
218 static void usb_mouse_disconnect(struct usb_interface *intf)
219 {
220         struct usb_mouse *mouse = usb_get_intfdata (intf);
221
222         usb_set_intfdata(intf, NULL);
223         if (mouse) {
224                 usb_kill_urb(mouse->irq);
225                 input_unregister_device(mouse->dev);
226                 usb_free_urb(mouse->irq);
227                 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
228                 kfree(mouse);
229         }
230 }
231
232 static struct usb_device_id usb_mouse_id_table [] = {
233         { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
234                 USB_INTERFACE_PROTOCOL_MOUSE) },
235         { }     /* Terminating entry */
236 };
237
238 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
239
240 static struct usb_driver usb_mouse_driver = {
241         .name           = "usbmouse",
242         .probe          = usb_mouse_probe,
243         .disconnect     = usb_mouse_disconnect,
244         .id_table       = usb_mouse_id_table,
245 };
246
247 static int __init usb_mouse_init(void)
248 {
249         int retval = usb_register(&usb_mouse_driver);
250         if (retval == 0)
251                 info(DRIVER_VERSION ":" DRIVER_DESC);
252         return retval;
253 }
254
255 static void __exit usb_mouse_exit(void)
256 {
257         usb_deregister(&usb_mouse_driver);
258 }
259
260 module_init(usb_mouse_init);
261 module_exit(usb_mouse_exit);