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 #include <linux/hid.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
55 signed char *data;
56 dma_addr_t data_dma;
57 };
58
59 static void usb_mouse_irq(struct urb *urb)
60 {
61 struct usb_mouse *mouse = urb->context;
62 signed char *data = mouse->data;
63 struct input_dev *dev = mouse->dev;
64 int status;
65
66 switch (urb->status) {
67 case 0: /* success */
68 break;
69 case -ECONNRESET: /* unlink */
70 case -ENOENT:
71 case -ESHUTDOWN:
72 return;
73 /* -EPIPE: should clear the halt */
74 default: /* error */
75 goto resubmit;
76 }
77
78 input_report_key(dev, BTN_LEFT, data[0] & 0x01);
79 input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
80 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
81 input_report_key(dev, BTN_SIDE, data[0] & 0x08);
82 input_report_key(dev, BTN_EXTRA, data[0] & 0x10);
83
84 input_report_rel(dev, REL_X, data[1]);
85 input_report_rel(dev, REL_Y, data[2]);
86 input_report_rel(dev, REL_WHEEL, data[3]);
87
88 input_sync(dev);
89 resubmit:
90 status = usb_submit_urb (urb, GFP_ATOMIC);
91 if (status)
92 err ("can't resubmit intr, %s-%s/input0, status %d",
93 mouse->usbdev->bus->bus_name,
94 mouse->usbdev->devpath, status);
95 }
96
97 static int usb_mouse_open(struct input_dev *dev)
98 {
99 struct usb_mouse *mouse = input_get_drvdata(dev);
100
101 mouse->irq->dev = mouse->usbdev;
102 if (usb_submit_urb(mouse->irq, GFP_KERNEL))
103 return -EIO;
104
105 return 0;
106 }
107
108 static void usb_mouse_close(struct input_dev *dev)
109 {
110 struct usb_mouse *mouse = input_get_drvdata(dev);
111
112 usb_kill_urb(mouse->irq);
113 }
114
115 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
116 {
117 struct usb_device *dev = interface_to_usbdev(intf);
118 struct usb_host_interface *interface;
119 struct usb_endpoint_descriptor *endpoint;
120 struct usb_mouse *mouse;
121 struct input_dev *input_dev;
122 int pipe, maxp;
123 int error = -ENOMEM;
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 (!usb_endpoint_is_int_in(endpoint))
132 return -ENODEV;
133
134 #ifdef CONFIG_USB_HID
135 if (usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
136 le16_to_cpu(dev->descriptor.idProduct))
137 & (HID_QUIRK_IGNORE|HID_QUIRK_IGNORE_MOUSE)) {
138 return -ENODEV;
139 }
140 #endif
141
142 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
143 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
144
145 mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
146 input_dev = input_allocate_device();
147 if (!mouse || !input_dev)
148 goto fail1;
149
150 mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma);
151 if (!mouse->data)
152 goto fail1;
153
154 mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
155 if (!mouse->irq)
156 goto fail2;
157
158 mouse->usbdev = dev;
159 mouse->dev = input_dev;
160
161 if (dev->manufacturer)
162 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));
163
164 if (dev->product) {
165 if (dev->manufacturer)
166 strlcat(mouse->name, " ", sizeof(mouse->name));
167 strlcat(mouse->name, dev->product, sizeof(mouse->name));
168 }
169
170 if (!strlen(mouse->name))
171 snprintf(mouse->name, sizeof(mouse->name),
172 "USB HIDBP Mouse %04x:%04x",
173 le16_to_cpu(dev->descriptor.idVendor),
174 le16_to_cpu(dev->descriptor.idProduct));
175
176 usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
177 strlcat(mouse->phys, "/input0", sizeof(mouse->phys));
178
179 input_dev->name = mouse->name;
180 input_dev->phys = mouse->phys;
181 usb_to_input_id(dev, &input_dev->id);
182 input_dev->dev.parent = &intf->dev;
183
184 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
185 input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
186 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
187 input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
188 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) |
189 BIT_MASK(BTN_EXTRA);
190 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
191
192 input_set_drvdata(input_dev, mouse);
193
194 input_dev->open = usb_mouse_open;
195 input_dev->close = usb_mouse_close;
196
197 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
198 (maxp > 8 ? 8 : maxp),
199 usb_mouse_irq, mouse, endpoint->bInterval);
200 mouse->irq->transfer_dma = mouse->data_dma;
201 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
202
203 error = input_register_device(mouse->dev);
204 if (error)
205 goto fail3;
206
207 usb_set_intfdata(intf, mouse);
208 return 0;
209
210 fail3:
211 usb_free_urb(mouse->irq);
212 fail2:
213 usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
214 fail1:
215 input_free_device(input_dev);
216 kfree(mouse);
217 return error;
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(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
236 USB_INTERFACE_PROTOCOL_MOUSE) },
237 { } /* Terminating entry */
238 };
239
240 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
241
242 static struct usb_driver usb_mouse_driver = {
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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