1 /*
2 * $Id: usbmouse.c,v 1.6 2000/08/14 21:05:26 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 MODULE_DESCRIPTION("USB HID Boot Protocol mouse driver");
40
41 struct usb_mouse {
42 signed char data[8];
43 char name[128];
44 struct usb_device *usbdev;
45 struct input_dev dev;
46 struct urb irq;
47 int open;
48 };
49
50 static void usb_mouse_irq(struct urb *urb)
51 {
52 struct usb_mouse *mouse = urb->context;
53 signed char *data = mouse->data;
54 struct input_dev *dev = &mouse->dev;
55
56 if (urb->status) return;
57
58 input_report_key(dev, BTN_LEFT, data[0] & 0x01);
59 input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
60 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
61 input_report_key(dev, BTN_SIDE, data[0] & 0x08);
62 input_report_key(dev, BTN_EXTRA, data[0] & 0x10);
63
64 input_report_rel(dev, REL_X, data[1]);
65 input_report_rel(dev, REL_Y, data[2]);
66 input_report_rel(dev, REL_WHEEL, data[3]);
67 }
68
69 static int usb_mouse_open(struct input_dev *dev)
70 {
71 struct usb_mouse *mouse = dev->private;
72
73 if (mouse->open++)
74 return 0;
75
76 mouse->irq.dev = mouse->usbdev;
77 if (usb_submit_urb(&mouse->irq))
78 return -EIO;
79
80 return 0;
81 }
82
83 static void usb_mouse_close(struct input_dev *dev)
84 {
85 struct usb_mouse *mouse = dev->private;
86
87 if (!--mouse->open)
88 usb_unlink_urb(&mouse->irq);
89 }
90
91 static void *usb_mouse_probe(struct usb_device *dev, unsigned int ifnum,
92 const struct usb_device_id *id)
93 {
94 struct usb_interface *iface;
95 struct usb_interface_descriptor *interface;
96 struct usb_endpoint_descriptor *endpoint;
97 struct usb_mouse *mouse;
98 int pipe, maxp;
99 char *buf;
100
101 iface = &dev->actconfig->interface[ifnum];
102 interface = &iface->altsetting[iface->act_altsetting];
103
104 if (interface->bNumEndpoints != 1) return NULL;
105
106 endpoint = interface->endpoint + 0;
107 if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
108 if ((endpoint->bmAttributes & 3) != 3) return NULL;
109
110 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
111 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
112
113 usb_set_idle(dev, interface->bInterfaceNumber, 0, 0);
114
115 if (!(mouse = kmalloc(sizeof(struct usb_mouse), GFP_KERNEL))) return NULL;
116 memset(mouse, 0, sizeof(struct usb_mouse));
117
118 mouse->usbdev = dev;
119
120 mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
121 mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
122 mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
123 mouse->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
124 mouse->dev.relbit[0] |= BIT(REL_WHEEL);
125
126 mouse->dev.private = mouse;
127 mouse->dev.open = usb_mouse_open;
128 mouse->dev.close = usb_mouse_close;
129
130 mouse->dev.name = mouse->name;
131 mouse->dev.idbus = BUS_USB;
132 mouse->dev.idvendor = dev->descriptor.idVendor;
133 mouse->dev.idproduct = dev->descriptor.idProduct;
134 mouse->dev.idversion = dev->descriptor.bcdDevice;
135
136 if (!(buf = kmalloc(63, GFP_KERNEL))) {
137 kfree(mouse);
138 return NULL;
139 }
140
141 if (dev->descriptor.iManufacturer &&
142 usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
143 strcat(mouse->name, buf);
144 if (dev->descriptor.iProduct &&
145 usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
146 sprintf(mouse->name, "%s %s", mouse->name, buf);
147
148 if (!strlen(mouse->name))
149 sprintf(mouse->name, "USB HIDBP Mouse %04x:%04x",
150 mouse->dev.idvendor, mouse->dev.idproduct);
151
152 kfree(buf);
153
154 FILL_INT_URB(&mouse->irq, dev, pipe, mouse->data, maxp > 8 ? 8 : maxp,
155 usb_mouse_irq, mouse, endpoint->bInterval);
156
157 input_register_device(&mouse->dev);
158
159 printk(KERN_INFO "input%d: %s on usb%d:%d.%d\n",
160 mouse->dev.number, mouse->name, dev->bus->busnum, dev->devnum, ifnum);
161
162 return mouse;
163 }
164
165 static void usb_mouse_disconnect(struct usb_device *dev, void *ptr)
166 {
167 struct usb_mouse *mouse = ptr;
168 usb_unlink_urb(&mouse->irq);
169 input_unregister_device(&mouse->dev);
170 kfree(mouse);
171 }
172
173 static struct usb_device_id usb_mouse_id_table [] = {
174 { USB_INTERFACE_INFO(3, 1, 2) },
175 { } /* Terminating entry */
176 };
177
178 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
179
180 static struct usb_driver usb_mouse_driver = {
181 name: "usb_mouse",
182 probe: usb_mouse_probe,
183 disconnect: usb_mouse_disconnect,
184 id_table: usb_mouse_id_table,
185 };
186
187 static int __init usb_mouse_init(void)
188 {
189 usb_register(&usb_mouse_driver);
190 return 0;
191 }
192
193 static void __exit usb_mouse_exit(void)
194 {
195 usb_deregister(&usb_mouse_driver);
196 }
197
198 module_init(usb_mouse_init);
199 module_exit(usb_mouse_exit);
200
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