1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* usbkbd.c Version 0.1
*
* Copyright (c) 1999 Vojtech Pavlik
*
* USB HIDBP Keyboard support
*
* Sponsored by SuSE
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#include <linux/kernel.h>
#include <linux/malloc.h>
#include <linux/module.h>
#include <linux/input.h>
#include "usb.h"
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
static unsigned char usb_kbd_keycode[256] = {
0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95,
120,121,122,123, 0,138, 0, 0,128,129,131,137,133,135,136,113,
115,114, 0, 0, 0, 0, 0,124, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
134,130,132, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
29, 42, 56,125, 97, 54,100,126
};
struct usb_kbd {
struct input_dev dev;
unsigned char new[8];
unsigned char old[8];
struct urb irq, led;
devrequest dr;
unsigned char leds;
};
static void usb_kbd_irq(struct urb *urb)
{
struct usb_kbd *kbd = urb->context;
int i;
if (urb->status) return;
for (i = 0; i < 8; i++)
input_report_key(&kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
for (i = 2; i < 8; i++) {
if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
if (usb_kbd_keycode[kbd->old[i]])
input_report_key(&kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
else
info("Unknown key (scancode %#x) released.", kbd->old[i]);
}
if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
if (usb_kbd_keycode[kbd->new[i]])
input_report_key(&kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
else
info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
}
}
memcpy(kbd->old, kbd->new, 8);
}
int usb_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct usb_kbd *kbd = dev->private;
if (type != EV_LED) return -1;
if (kbd->led.status == -EINPROGRESS) {
warn("had to kill led urb");
usb_unlink_urb(&kbd->led);
}
kbd->leds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
(!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
(!!test_bit(LED_NUML, dev->led));
if (usb_submit_urb(&kbd->led)) {
err("usb_submit_urb(leds) failed");
return -1;
}
return 0;
}
static void usb_kbd_led(struct urb *urb)
{
if (urb->status)
warn("led urb status %d received", urb->status);
}
static void *usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
{
struct usb_interface_descriptor *interface;
struct usb_endpoint_descriptor *endpoint;
struct usb_kbd *kbd;
int i;
if (dev->descriptor.bNumConfigurations != 1) return NULL;
interface = dev->config[0].interface[ifnum].altsetting + 0;
if (interface->bInterfaceClass != 3) return NULL;
if (interface->bInterfaceSubClass != 1) return NULL;
if (interface->bInterfaceProtocol != 1) return NULL;
if (interface->bNumEndpoints != 1) return NULL;
endpoint = interface->endpoint + 0;
if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
if ((endpoint->bmAttributes & 3) != 3) return NULL;
usb_set_protocol(dev, interface->bInterfaceNumber, 0);
usb_set_idle(dev, interface->bInterfaceNumber, 0, 0);
if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL))) return NULL;
memset(kbd, 0, sizeof(struct usb_kbd));
kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
kbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA);
for (i = 0; i < 255; i++)
set_bit(usb_kbd_keycode[i], kbd->dev.keybit);
clear_bit(0, kbd->dev.keybit);
kbd->dev.private = kbd;
kbd->dev.event = usb_kbd_event;
{
int pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
int maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
FILL_INT_URB(&kbd->irq, dev, pipe, kbd->new, maxp > 8 ? 8 : maxp,
usb_kbd_irq, kbd, endpoint->bInterval);
}
kbd->dr.requesttype = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
kbd->dr.request = USB_REQ_SET_REPORT;
kbd->dr.value = 0x200;
kbd->dr.index = interface->bInterfaceNumber;
kbd->dr.length = 1;
FILL_CONTROL_URB(&kbd->led, dev, usb_sndctrlpipe(dev, 0),
(void*) &kbd->dr, &kbd->leds, 1, usb_kbd_led, kbd);
if (usb_submit_urb(&kbd->irq)) {
kfree(kbd);
return NULL;
}
input_register_device(&kbd->dev);
printk(KERN_INFO "input%d: USB HIDBP keyboard\n", kbd->dev.number);
return kbd;
}
static void usb_kbd_disconnect(struct usb_device *dev, void *ptr)
{
struct usb_kbd *kbd = ptr;
usb_unlink_urb(&kbd->irq);
input_unregister_device(&kbd->dev);
kfree(kbd);
}
static struct usb_driver usb_kbd_driver = {
name: "keyboard",
probe: usb_kbd_probe,
disconnect: usb_kbd_disconnect
};
#ifdef MODULE
void cleanup_module(void)
{
usb_deregister(&usb_kbd_driver);
}
int init_module(void)
#else
int usb_kbd_init(void)
#endif
{
usb_register(&usb_kbd_driver);
return 0;
}
|
