tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
43MODULE_AUTHOR(DRIVER_AUTHOR);
44MODULE_DESCRIPTION(DRIVER_DESC);
45MODULE_LICENSE(DRIVER_LICENSE);
46
47struct 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
58static 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);
90resubmit:
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
98static 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
109static 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
116static 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
199fail2: usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
200fail1: input_free_device(input_dev);
201 kfree(mouse);
202 return -ENOMEM;
203}
204
205static 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
219static struct usb_device_id usb_mouse_id_table [] = {
220 { USB_INTERFACE_INFO(3, 1, 2) },
221 { } /* Terminating entry */
222};
223
224MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
225
226static 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
233static 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
241static void __exit usb_mouse_exit(void)
242{
243 usb_deregister(&usb_mouse_driver);
244}
245
246module_init(usb_mouse_init);
247module_exit(usb_mouse_exit);