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x86: cosmetic unification cpu/proc|_64.c
[linux-2.6/btrfs-unstable.git] / drivers / hid / usbhid / usbkbd.c
blob5d9dbb47e4a84f9a35fcf4cd419636fb653f4913
1 /*
2 * $Id: usbkbd.c,v 1.27 2001/12/27 10:37:41 vojtech Exp $
3 *
4 * Copyright (c) 1999-2001 Vojtech Pavlik
5 *
6 * USB HIDBP Keyboard 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 ""
40 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
41 #define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
42 #define DRIVER_LICENSE "GPL"
43
44 MODULE_AUTHOR(DRIVER_AUTHOR);
45 MODULE_DESCRIPTION(DRIVER_DESC);
46 MODULE_LICENSE(DRIVER_LICENSE);
47
48 static unsigned char usb_kbd_keycode[256] = {
49 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
50 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
51 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
52 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
53 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
54 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
55 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
56 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
57 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
58 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
60 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
62 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
63 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
64 150,158,159,128,136,177,178,176,142,152,173,140
65 };
66
67 struct usb_kbd {
68 struct input_dev *dev;
69 struct usb_device *usbdev;
70 unsigned char old[8];
71 struct urb *irq, *led;
72 unsigned char newleds;
73 char name[128];
74 char phys[64];
75
76 unsigned char *new;
77 struct usb_ctrlrequest *cr;
78 unsigned char *leds;
79 dma_addr_t cr_dma;
80 dma_addr_t new_dma;
81 dma_addr_t leds_dma;
82 };
83
84 static void usb_kbd_irq(struct urb *urb)
85 {
86 struct usb_kbd *kbd = urb->context;
87 int i;
88
89 switch (urb->status) {
90 case 0: /* success */
91 break;
92 case -ECONNRESET: /* unlink */
93 case -ENOENT:
94 case -ESHUTDOWN:
95 return;
96 /* -EPIPE: should clear the halt */
97 default: /* error */
98 goto resubmit;
99 }
100
101 for (i = 0; i < 8; i++)
102 input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
103
104 for (i = 2; i < 8; i++) {
105
106 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
107 if (usb_kbd_keycode[kbd->old[i]])
108 input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
109 else
110 info("Unknown key (scancode %#x) released.", kbd->old[i]);
111 }
112
113 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
114 if (usb_kbd_keycode[kbd->new[i]])
115 input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
116 else
117 info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
118 }
119 }
120
121 input_sync(kbd->dev);
122
123 memcpy(kbd->old, kbd->new, 8);
124
125 resubmit:
126 i = usb_submit_urb (urb, GFP_ATOMIC);
127 if (i)
128 err_hid ("can't resubmit intr, %s-%s/input0, status %d",
129 kbd->usbdev->bus->bus_name,
130 kbd->usbdev->devpath, i);
131 }
132
133 static int usb_kbd_event(struct input_dev *dev, unsigned int type,
134 unsigned int code, int value)
135 {
136 struct usb_kbd *kbd = input_get_drvdata(dev);
137
138 if (type != EV_LED)
139 return -1;
140
141 kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
142 (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
143 (!!test_bit(LED_NUML, dev->led));
144
145 if (kbd->led->status == -EINPROGRESS)
146 return 0;
147
148 if (*(kbd->leds) == kbd->newleds)
149 return 0;
150
151 *(kbd->leds) = kbd->newleds;
152 kbd->led->dev = kbd->usbdev;
153 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
154 err_hid("usb_submit_urb(leds) failed");
155
156 return 0;
157 }
158
159 static void usb_kbd_led(struct urb *urb)
160 {
161 struct usb_kbd *kbd = urb->context;
162
163 if (urb->status)
164 warn("led urb status %d received", urb->status);
165
166 if (*(kbd->leds) == kbd->newleds)
167 return;
168
169 *(kbd->leds) = kbd->newleds;
170 kbd->led->dev = kbd->usbdev;
171 if (usb_submit_urb(kbd->led, GFP_ATOMIC))
172 err_hid("usb_submit_urb(leds) failed");
173 }
174
175 static int usb_kbd_open(struct input_dev *dev)
176 {
177 struct usb_kbd *kbd = input_get_drvdata(dev);
178
179 kbd->irq->dev = kbd->usbdev;
180 if (usb_submit_urb(kbd->irq, GFP_KERNEL))
181 return -EIO;
182
183 return 0;
184 }
185
186 static void usb_kbd_close(struct input_dev *dev)
187 {
188 struct usb_kbd *kbd = input_get_drvdata(dev);
189
190 usb_kill_urb(kbd->irq);
191 }
192
193 static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
194 {
195 if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))
196 return -1;
197 if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
198 return -1;
199 if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma)))
200 return -1;
201 if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma)))
202 return -1;
203 if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma)))
204 return -1;
205
206 return 0;
207 }
208
209 static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
210 {
211 usb_free_urb(kbd->irq);
212 usb_free_urb(kbd->led);
213 usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);
214 usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);
215 usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma);
216 }
217
218 static int usb_kbd_probe(struct usb_interface *iface,
219 const struct usb_device_id *id)
220 {
221 struct usb_device *dev = interface_to_usbdev(iface);
222 struct usb_host_interface *interface;
223 struct usb_endpoint_descriptor *endpoint;
224 struct usb_kbd *kbd;
225 struct input_dev *input_dev;
226 int i, pipe, maxp;
227 int error = -ENOMEM;
228
229 interface = iface->cur_altsetting;
230
231 if (interface->desc.bNumEndpoints != 1)
232 return -ENODEV;
233
234 endpoint = &interface->endpoint[0].desc;
235 if (!usb_endpoint_is_int_in(endpoint))
236 return -ENODEV;
237
238 #ifdef CONFIG_USB_HID
239 if (usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
240 le16_to_cpu(dev->descriptor.idProduct))
241 & HID_QUIRK_IGNORE) {
242 return -ENODEV;
243 }
244 #endif
245
246 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
247 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
248
249 kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
250 input_dev = input_allocate_device();
251 if (!kbd || !input_dev)
252 goto fail1;
253
254 if (usb_kbd_alloc_mem(dev, kbd))
255 goto fail2;
256
257 kbd->usbdev = dev;
258 kbd->dev = input_dev;
259
260 if (dev->manufacturer)
261 strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name));
262
263 if (dev->product) {
264 if (dev->manufacturer)
265 strlcat(kbd->name, " ", sizeof(kbd->name));
266 strlcat(kbd->name, dev->product, sizeof(kbd->name));
267 }
268
269 if (!strlen(kbd->name))
270 snprintf(kbd->name, sizeof(kbd->name),
271 "USB HIDBP Keyboard %04x:%04x",
272 le16_to_cpu(dev->descriptor.idVendor),
273 le16_to_cpu(dev->descriptor.idProduct));
274
275 usb_make_path(dev, kbd->phys, sizeof(kbd->phys));
276 strlcpy(kbd->phys, "/input0", sizeof(kbd->phys));
277
278 input_dev->name = kbd->name;
279 input_dev->phys = kbd->phys;
280 usb_to_input_id(dev, &input_dev->id);
281 input_dev->dev.parent = &iface->dev;
282
283 input_set_drvdata(input_dev, kbd);
284
285 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
286 BIT_MASK(EV_REP);
287 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
288 BIT_MASK(LED_SCROLLL) | BIT_MASK(LED_COMPOSE) |
289 BIT_MASK(LED_KANA);
290
291 for (i = 0; i < 255; i++)
292 set_bit(usb_kbd_keycode[i], input_dev->keybit);
293 clear_bit(0, input_dev->keybit);
294
295 input_dev->event = usb_kbd_event;
296 input_dev->open = usb_kbd_open;
297 input_dev->close = usb_kbd_close;
298
299 usb_fill_int_urb(kbd->irq, dev, pipe,
300 kbd->new, (maxp > 8 ? 8 : maxp),
301 usb_kbd_irq, kbd, endpoint->bInterval);
302 kbd->irq->transfer_dma = kbd->new_dma;
303 kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
304
305 kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
306 kbd->cr->bRequest = 0x09;
307 kbd->cr->wValue = cpu_to_le16(0x200);
308 kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
309 kbd->cr->wLength = cpu_to_le16(1);
310
311 usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),
312 (void *) kbd->cr, kbd->leds, 1,
313 usb_kbd_led, kbd);
314 kbd->led->setup_dma = kbd->cr_dma;
315 kbd->led->transfer_dma = kbd->leds_dma;
316 kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
317
318 error = input_register_device(kbd->dev);
319 if (error)
320 goto fail2;
321
322 usb_set_intfdata(iface, kbd);
323 return 0;
324
325 fail2:
326 usb_kbd_free_mem(dev, kbd);
327 fail1:
328 input_free_device(input_dev);
329 kfree(kbd);
330 return error;
331 }
332
333 static void usb_kbd_disconnect(struct usb_interface *intf)
334 {
335 struct usb_kbd *kbd = usb_get_intfdata (intf);
336
337 usb_set_intfdata(intf, NULL);
338 if (kbd) {
339 usb_kill_urb(kbd->irq);
340 input_unregister_device(kbd->dev);
341 usb_kbd_free_mem(interface_to_usbdev(intf), kbd);
342 kfree(kbd);
343 }
344 }
345
346 static struct usb_device_id usb_kbd_id_table [] = {
347 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
348 USB_INTERFACE_PROTOCOL_KEYBOARD) },
349 { } /* Terminating entry */
350 };
351
352 MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
353
354 static struct usb_driver usb_kbd_driver = {
355 .name = "usbkbd",
356 .probe = usb_kbd_probe,
357 .disconnect = usb_kbd_disconnect,
358 .id_table = usb_kbd_id_table,
359 };
360
361 static int __init usb_kbd_init(void)
362 {
363 int result = usb_register(&usb_kbd_driver);
364 if (result == 0)
365 info(DRIVER_VERSION ":" DRIVER_DESC);
366 return result;
367 }
368
369 static void __exit usb_kbd_exit(void)
370 {
371 usb_deregister(&usb_kbd_driver);
372 }
373
374 module_init(usb_kbd_init);
375 module_exit(usb_kbd_exit);
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