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/input.h>
32 #include <linux/module.h>
33 #include <linux/init.h>
34 #include <linux/usb.h>
35
36 /*
37 * Version Information
38 */
39 #define DRIVER_VERSION "v1.6"
40 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
41 #define DRIVER_DESC "USB HID Boot Protocol mouse driver"
42 #define DRIVER_LICENSE "GPL"
43
44 MODULE_AUTHOR(DRIVER_AUTHOR);
45 MODULE_DESCRIPTION(DRIVER_DESC);
46 MODULE_LICENSE(DRIVER_LICENSE);
47
48 struct usb_mouse {
49 char name[128];
50 char phys[64];
51 struct usb_device *usbdev;
52 struct input_dev dev;
53 struct urb *irq;
54 int open;
55
56 signed char *data;
57 dma_addr_t data_dma;
58 };
59
60 static void usb_mouse_irq(struct urb *urb, struct pt_regs *regs)
61 {
62 struct usb_mouse *mouse = urb->context;
63 signed char *data = mouse->data;
64 struct input_dev *dev = &mouse->dev;
65 int status;
66
67 switch (urb->status) {
68 case 0: /* success */
69 break;
70 case -ECONNRESET: /* unlink */
71 case -ENOENT:
72 case -ESHUTDOWN:
73 return;
74 /* -EPIPE: should clear the halt */
75 default: /* error */
76 goto resubmit;
77 }
78
79 input_regs(dev, regs);
80
81 input_report_key(dev, BTN_LEFT, data[0] & 0x01);
82 input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
83 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
84 input_report_key(dev, BTN_SIDE, data[0] & 0x08);
85 input_report_key(dev, BTN_EXTRA, data[0] & 0x10);
86
87 input_report_rel(dev, REL_X, data[1]);
88 input_report_rel(dev, REL_Y, data[2]);
89 input_report_rel(dev, REL_WHEEL, data[3]);
90
91 input_sync(dev);
92 resubmit:
93 status = usb_submit_urb (urb, SLAB_ATOMIC);
94 if (status)
95 err ("can't resubmit intr, %s-%s/input0, status %d",
96 mouse->usbdev->bus->bus_name,
97 mouse->usbdev->devpath, status);
98 }
99
100 static int usb_mouse_open(struct input_dev *dev)
101 {
102 struct usb_mouse *mouse = dev->private;
103
104 if (mouse->open++)
105 return 0;
106
107 mouse->irq->dev = mouse->usbdev;
108 if (usb_submit_urb(mouse->irq, GFP_KERNEL)) {
109 mouse->open--;
110 return -EIO;
111 }
112
113 return 0;
114 }
115
116 static void usb_mouse_close(struct input_dev *dev)
117 {
118 struct usb_mouse *mouse = dev->private;
119
120 if (!--mouse->open)
121 usb_kill_urb(mouse->irq);
122 }
123
124 static int usb_mouse_probe(struct usb_interface * intf, const struct usb_device_id * id)
125 {
126 struct usb_device * dev = interface_to_usbdev(intf);
127 struct usb_host_interface *interface;
128 struct usb_endpoint_descriptor *endpoint;
129 struct usb_mouse *mouse;
130 int pipe, maxp;
131 char path[64];
132 char *buf;
133
134 interface = intf->cur_altsetting;
135
136 if (interface->desc.bNumEndpoints != 1)
137 return -ENODEV;
138
139 endpoint = &interface->endpoint[0].desc;
140 if (!(endpoint->bEndpointAddress & 0x80))
141 return -ENODEV;
142 if ((endpoint->bmAttributes & 3) != 3)
143 return -ENODEV;
144
145 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
146 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
147
148 if (!(mouse = kmalloc(sizeof(struct usb_mouse), GFP_KERNEL)))
149 return -ENOMEM;
150 memset(mouse, 0, sizeof(struct usb_mouse));
151
152 mouse->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &mouse->data_dma);
153 if (!mouse->data) {
154 kfree(mouse);
155 return -ENOMEM;
156 }
157
158 mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
159 if (!mouse->irq) {
160 usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
161 kfree(mouse);
162 return -ENODEV;
163 }
164
165 mouse->usbdev = dev;
166
167 mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
168 mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
169 mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
170 mouse->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
171 mouse->dev.relbit[0] |= BIT(REL_WHEEL);
172
173 mouse->dev.private = mouse;
174 mouse->dev.open = usb_mouse_open;
175 mouse->dev.close = usb_mouse_close;
176
177 usb_make_path(dev, path, 64);
178 sprintf(mouse->phys, "%s/input0", path);
179
180 mouse->dev.name = mouse->name;
181 mouse->dev.phys = mouse->phys;
182 mouse->dev.id.bustype = BUS_USB;
183 mouse->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
184 mouse->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
185 mouse->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
186 mouse->dev.dev = &intf->dev;
187
188 if (!(buf = kmalloc(63, GFP_KERNEL))) {
189 usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
190 kfree(mouse);
191 return -ENOMEM;
192 }
193
194 if (dev->descriptor.iManufacturer &&
195 usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
196 strcat(mouse->name, buf);
197 if (dev->descriptor.iProduct &&
198 usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
199 sprintf(mouse->name, "%s %s", mouse->name, buf);
200
201 if (!strlen(mouse->name))
202 sprintf(mouse->name, "USB HIDBP Mouse %04x:%04x",
203 mouse->dev.id.vendor, mouse->dev.id.product);
204
205 kfree(buf);
206
207 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
208 (maxp > 8 ? 8 : maxp),
209 usb_mouse_irq, mouse, endpoint->bInterval);
210 mouse->irq->transfer_dma = mouse->data_dma;
211 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
212
213 input_register_device(&mouse->dev);
214 printk(KERN_INFO "input: %s on %s\n", mouse->name, path);
215
216 usb_set_intfdata(intf, mouse);
217 return 0;
218 }
219
220 static void usb_mouse_disconnect(struct usb_interface *intf)
221 {
222 struct usb_mouse *mouse = usb_get_intfdata (intf);
223
224 usb_set_intfdata(intf, NULL);
225 if (mouse) {
226 usb_kill_urb(mouse->irq);
227 input_unregister_device(&mouse->dev);
228 usb_free_urb(mouse->irq);
229 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
230 kfree(mouse);
231 }
232 }
233
234 static struct usb_device_id usb_mouse_id_table [] = {
235 { USB_INTERFACE_INFO(3, 1, 2) },
236 { } /* Terminating entry */
237 };
238
239 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
240
241 static struct usb_driver usb_mouse_driver = {
242 .owner = THIS_MODULE,
243 .name = "usbmouse",
244 .probe = usb_mouse_probe,
245 .disconnect = usb_mouse_disconnect,
246 .id_table = usb_mouse_id_table,
247 };
248
249 static int __init usb_mouse_init(void)
250 {
251 int retval = usb_register(&usb_mouse_driver);
252 if (retval == 0)
253 info(DRIVER_VERSION ":" DRIVER_DESC);
254 return retval;
255 }
256
257 static void __exit usb_mouse_exit(void)
258 {
259 usb_deregister(&usb_mouse_driver);
260 }
261
262 module_init(usb_mouse_init);
263 module_exit(usb_mouse_exit);
264
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