1 /*
2 * $Id: usbkbd.c,v 1.16 2000/08/14 21:05:26 vojtech Exp $
3 *
4 * Copyright (c) 1999-2000 Vojtech Pavlik
5 *
6 * USB HIDBP Keyboard support
7 *
8 * Sponsored by SuSE
9 */
10
11 /*
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 * Should you need to contact me, the author, you can do so either by
27 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
28 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
29 */
30
31 #include <linux/kernel.h>
32 #include <linux/malloc.h>
33 #include <linux/module.h>
34 #include <linux/input.h>
35 #include <linux/init.h>
36 #include <linux/usb.h>
37
38 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
39 MODULE_DESCRIPTION("USB HID Boot Protocol keyboard driver");
40
41 static unsigned char usb_kbd_keycode[256] = {
42 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
43 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
44 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
45 27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
46 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
47 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
48 72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95,
49 120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113,
50 115,114, 0, 0, 0,124, 0,181,182,183,184,185,186,187,188,189,
51 190,191,192,193,194,195,196,197,198, 0, 0, 0, 0, 0, 0, 0,
52 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
53 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
54 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
55 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
56 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
57 150,158,159,128,136,177,178,176,142,152,173,140
58 };
59
60 struct usb_kbd {
61 struct input_dev dev;
62 struct usb_device *usbdev;
63 unsigned char new[8];
64 unsigned char old[8];
65 struct urb irq, led;
66 devrequest dr;
67 unsigned char leds, newleds;
68 char name[128];
69 int open;
70 };
71
72 static void usb_kbd_irq(struct urb *urb)
73 {
74 struct usb_kbd *kbd = urb->context;
75 int i;
76
77 if (urb->status) return;
78
79 for (i = 0; i < 8; i++)
80 input_report_key(&kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
81
82 for (i = 2; i < 8; i++) {
83
84 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
85 if (usb_kbd_keycode[kbd->old[i]])
86 input_report_key(&kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
87 else
88 info("Unknown key (scancode %#x) released.", kbd->old[i]);
89 }
90
91 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
92 if (usb_kbd_keycode[kbd->new[i]])
93 input_report_key(&kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
94 else
95 info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
96 }
97 }
98
99 memcpy(kbd->old, kbd->new, 8);
100 }
101
102 int usb_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
103 {
104 struct usb_kbd *kbd = dev->private;
105
106 if (type != EV_LED) return -1;
107
108
109 kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
110 (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
111 (!!test_bit(LED_NUML, dev->led));
112
113 if (kbd->led.status == -EINPROGRESS)
114 return 0;
115
116 if (kbd->leds == kbd->newleds)
117 return 0;
118
119 kbd->leds = kbd->newleds;
120 kbd->led.dev = kbd->usbdev;
121 if (usb_submit_urb(&kbd->led))
122 err("usb_submit_urb(leds) failed");
123
124 return 0;
125 }
126
127 static void usb_kbd_led(struct urb *urb)
128 {
129 struct usb_kbd *kbd = urb->context;
130
131 if (urb->status)
132 warn("led urb status %d received", urb->status);
133
134 if (kbd->leds == kbd->newleds)
135 return;
136
137 kbd->leds = kbd->newleds;
138 kbd->led.dev = kbd->usbdev;
139 if (usb_submit_urb(&kbd->led))
140 err("usb_submit_urb(leds) failed");
141 }
142
143 static int usb_kbd_open(struct input_dev *dev)
144 {
145 struct usb_kbd *kbd = dev->private;
146
147 if (kbd->open++)
148 return 0;
149
150 kbd->irq.dev = kbd->usbdev;
151 if (usb_submit_urb(&kbd->irq))
152 return -EIO;
153
154 return 0;
155 }
156
157 static void usb_kbd_close(struct input_dev *dev)
158 {
159 struct usb_kbd *kbd = dev->private;
160
161 if (!--kbd->open)
162 usb_unlink_urb(&kbd->irq);
163 }
164
165 static void *usb_kbd_probe(struct usb_device *dev, unsigned int ifnum,
166 const struct usb_device_id *id)
167 {
168 struct usb_interface *iface;
169 struct usb_interface_descriptor *interface;
170 struct usb_endpoint_descriptor *endpoint;
171 struct usb_kbd *kbd;
172 int i, pipe, maxp;
173 char *buf;
174
175 iface = &dev->actconfig->interface[ifnum];
176 interface = &iface->altsetting[iface->act_altsetting];
177
178 if (interface->bNumEndpoints != 1) return NULL;
179
180 endpoint = interface->endpoint + 0;
181 if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
182 if ((endpoint->bmAttributes & 3) != 3) return NULL;
183
184 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
185 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
186
187 usb_set_protocol(dev, interface->bInterfaceNumber, 0);
188 usb_set_idle(dev, interface->bInterfaceNumber, 0, 0);
189
190 if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL))) return NULL;
191 memset(kbd, 0, sizeof(struct usb_kbd));
192
193 kbd->usbdev = dev;
194
195 kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
196 kbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA);
197
198 for (i = 0; i < 255; i++)
199 set_bit(usb_kbd_keycode[i], kbd->dev.keybit);
200 clear_bit(0, kbd->dev.keybit);
201
202 kbd->dev.private = kbd;
203 kbd->dev.event = usb_kbd_event;
204 kbd->dev.open = usb_kbd_open;
205 kbd->dev.close = usb_kbd_close;
206
207 FILL_INT_URB(&kbd->irq, dev, pipe, kbd->new, maxp > 8 ? 8 : maxp,
208 usb_kbd_irq, kbd, endpoint->bInterval);
209
210 kbd->dr.requesttype = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
211 kbd->dr.request = USB_REQ_SET_REPORT;
212 kbd->dr.value = 0x200;
213 kbd->dr.index = interface->bInterfaceNumber;
214 kbd->dr.length = 1;
215
216 kbd->dev.name = kbd->name;
217 kbd->dev.idbus = BUS_USB;
218 kbd->dev.idvendor = dev->descriptor.idVendor;
219 kbd->dev.idproduct = dev->descriptor.idProduct;
220 kbd->dev.idversion = dev->descriptor.bcdDevice;
221
222 if (!(buf = kmalloc(63, GFP_KERNEL))) {
223 kfree(kbd);
224 return NULL;
225 }
226
227 if (dev->descriptor.iManufacturer &&
228 usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
229 strcat(kbd->name, buf);
230 if (dev->descriptor.iProduct &&
231 usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
232 sprintf(kbd->name, "%s %s", kbd->name, buf);
233
234 if (!strlen(kbd->name))
235 sprintf(kbd->name, "USB HIDBP Keyboard %04x:%04x",
236 kbd->dev.idvendor, kbd->dev.idproduct);
237
238 kfree(buf);
239
240 FILL_CONTROL_URB(&kbd->led, dev, usb_sndctrlpipe(dev, 0),
241 (void*) &kbd->dr, &kbd->leds, 1, usb_kbd_led, kbd);
242
243 input_register_device(&kbd->dev);
244
245 printk(KERN_INFO "input%d: %s on on usb%d:%d.%d\n",
246 kbd->dev.number, kbd->name, dev->bus->busnum, dev->devnum, ifnum);
247
248 return kbd;
249 }
250
251 static void usb_kbd_disconnect(struct usb_device *dev, void *ptr)
252 {
253 struct usb_kbd *kbd = ptr;
254 usb_unlink_urb(&kbd->irq);
255 input_unregister_device(&kbd->dev);
256 kfree(kbd);
257 }
258
259 static struct usb_device_id usb_kbd_id_table [] = {
260 { USB_INTERFACE_INFO(3, 1, 1) },
261 { } /* Terminating entry */
262 };
263
264 MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
265
266 static struct usb_driver usb_kbd_driver = {
267 name: "keyboard",
268 probe: usb_kbd_probe,
269 disconnect: usb_kbd_disconnect,
270 id_table: usb_kbd_id_table,
271 };
272
273 static int __init usb_kbd_init(void)
274 {
275 usb_register(&usb_kbd_driver);
276 return 0;
277 }
278
279 static void __exit usb_kbd_exit(void)
280 {
281 usb_deregister(&usb_kbd_driver);
282 }
283
284 module_init(usb_kbd_init);
285 module_exit(usb_kbd_exit);
286
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