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/input.h>
32#include <linux/module.h>
33#include <linux/init.h>
34#include <linux/usb.h>
35#include <linux/usb_input.h>
36
37/*
38 * Version Information
39 */
40#define DRIVER_VERSION "v1.6"
41#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
42#define DRIVER_DESC "USB HID Boot Protocol mouse driver"
43#define DRIVER_LICENSE "GPL"
44
45MODULE_AUTHOR(DRIVER_AUTHOR);
46MODULE_DESCRIPTION(DRIVER_DESC);
47MODULE_LICENSE(DRIVER_LICENSE);
48
49struct usb_mouse {
50 char name[128];
51 char phys[64];
52 struct usb_device *usbdev;
53 struct input_dev *dev;
54 struct urb *irq;
55
56 signed char *data;
57 dma_addr_t data_dma;
58};
59
60static 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);
92resubmit:
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
100static int usb_mouse_open(struct input_dev *dev)
101{
102 struct usb_mouse *mouse = dev->private;
103
104 mouse->irq->dev = mouse->usbdev;
105 if (usb_submit_urb(mouse->irq, GFP_KERNEL))
106 return -EIO;
107
108 return 0;
109}
110
111static void usb_mouse_close(struct input_dev *dev)
112{
113 struct usb_mouse *mouse = dev->private;
114
115 usb_kill_urb(mouse->irq);
116}
117
118static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
119{
120 struct usb_device *dev = interface_to_usbdev(intf);
121 struct usb_host_interface *interface;
122 struct usb_endpoint_descriptor *endpoint;
123 struct usb_mouse *mouse;
124 struct input_dev *input_dev;
125 int pipe, maxp;
126
127 interface = intf->cur_altsetting;
128
129 if (interface->desc.bNumEndpoints != 1)
130 return -ENODEV;
131
132 endpoint = &interface->endpoint[0].desc;
133 if (!(endpoint->bEndpointAddress & USB_DIR_IN))
134 return -ENODEV;
135 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
136 return -ENODEV;
137
138 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
139 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
140
141 mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
142 input_dev = input_allocate_device();
143 if (!mouse || !input_dev)
144 goto fail1;
145
146 mouse->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &mouse->data_dma);
147 if (!mouse->data)
148 goto fail1;
149
150 mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
151 if (!mouse->irq)
152 goto fail2;
153
154 mouse->usbdev = dev;
155 mouse->dev = input_dev;
156
157 if (dev->manufacturer)
158 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));
159
160 if (dev->product) {
161 if (dev->manufacturer)
162 strlcat(mouse->name, " ", sizeof(mouse->name));
163 strlcat(mouse->name, dev->product, sizeof(mouse->name));
164 }
165
166 if (!strlen(mouse->name))
167 snprintf(mouse->name, sizeof(mouse->name),
168 "USB HIDBP Mouse %04x:%04x",
169 le16_to_cpu(dev->descriptor.idVendor),
170 le16_to_cpu(dev->descriptor.idProduct));
171
172 usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
173 strlcat(mouse->phys, "/input0", sizeof(mouse->phys));
174
175 input_dev->name = mouse->name;
176 input_dev->phys = mouse->phys;
177 usb_to_input_id(dev, &input_dev->id);
178 input_dev->cdev.dev = &intf->dev;
179
180 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
181 input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
182 input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
183 input_dev->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
184 input_dev->relbit[0] |= BIT(REL_WHEEL);
185
186 input_dev->private = mouse;
187 input_dev->open = usb_mouse_open;
188 input_dev->close = usb_mouse_close;
189
190 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
191 (maxp > 8 ? 8 : maxp),
192 usb_mouse_irq, mouse, endpoint->bInterval);
193 mouse->irq->transfer_dma = mouse->data_dma;
194 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
195
196 input_register_device(mouse->dev);
197
198 usb_set_intfdata(intf, mouse);
199 return 0;
200
201fail2: usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
202fail1: input_free_device(input_dev);
203 kfree(mouse);
204 return -ENOMEM;
205}
206
207static void usb_mouse_disconnect(struct usb_interface *intf)
208{
209 struct usb_mouse *mouse = usb_get_intfdata (intf);
210
211 usb_set_intfdata(intf, NULL);
212 if (mouse) {
213 usb_kill_urb(mouse->irq);
214 input_unregister_device(mouse->dev);
215 usb_free_urb(mouse->irq);
216 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
217 kfree(mouse);
218 }
219}
220
221static struct usb_device_id usb_mouse_id_table [] = {
222 { USB_INTERFACE_INFO(3, 1, 2) },
223 { } /* Terminating entry */
224};
225
226MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
227
228static struct usb_driver usb_mouse_driver = {
229 .name = "usbmouse",
230 .probe = usb_mouse_probe,
231 .disconnect = usb_mouse_disconnect,
232 .id_table = usb_mouse_id_table,
233};
234
235static int __init usb_mouse_init(void)
236{
237 int retval = usb_register(&usb_mouse_driver);
238 if (retval == 0)
239 info(DRIVER_VERSION ":" DRIVER_DESC);
240 return retval;
241}
242
243static void __exit usb_mouse_exit(void)
244{
245 usb_deregister(&usb_mouse_driver);
246}
247
248module_init(usb_mouse_init);
249module_exit(usb_mouse_exit);