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Commit | Line | Data |
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1da177e4 LT |
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 | |
05f091ab | 12 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 13 | * (at your option) any later version. |
05f091ab | 14 | * |
1da177e4 LT |
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. | |
05f091ab | 19 | * |
1da177e4 LT |
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 | |
05f091ab | 23 | * |
1da177e4 LT |
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> | |
1da177e4 | 32 | #include <linux/init.h> |
ae0dadcf | 33 | #include <linux/usb/input.h> |
4ef2e23f | 34 | #include <linux/hid.h> |
1da177e4 LT |
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 { | |
c5b7c7c3 | 68 | struct input_dev *dev; |
1da177e4 LT |
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]; | |
1da177e4 LT |
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 | ||
7d12e780 | 84 | static void usb_kbd_irq(struct urb *urb) |
1da177e4 LT |
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 | ||
1da177e4 | 101 | for (i = 0; i < 8; i++) |
c5b7c7c3 | 102 | input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1); |
1da177e4 LT |
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]]) | |
c5b7c7c3 | 108 | input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0); |
1da177e4 LT |
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]]) | |
c5b7c7c3 | 115 | input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1); |
1da177e4 LT |
116 | else |
117 | info("Unknown key (scancode %#x) pressed.", kbd->new[i]); | |
118 | } | |
119 | } | |
120 | ||
c5b7c7c3 | 121 | input_sync(kbd->dev); |
1da177e4 LT |
122 | |
123 | memcpy(kbd->old, kbd->new, 8); | |
124 | ||
125 | resubmit: | |
54e6ecb2 | 126 | i = usb_submit_urb (urb, GFP_ATOMIC); |
1da177e4 LT |
127 | if (i) |
128 | err ("can't resubmit intr, %s-%s/input0, status %d", | |
129 | kbd->usbdev->bus->bus_name, | |
130 | kbd->usbdev->devpath, i); | |
131 | } | |
132 | ||
be5e3383 AB |
133 | static int usb_kbd_event(struct input_dev *dev, unsigned int type, |
134 | unsigned int code, int value) | |
1da177e4 LT |
135 | { |
136 | struct usb_kbd *kbd = dev->private; | |
137 | ||
138 | if (type != EV_LED) | |
139 | return -1; | |
140 | ||
141 | ||
142 | kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
143 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
144 | (!!test_bit(LED_NUML, dev->led)); | |
145 | ||
146 | if (kbd->led->status == -EINPROGRESS) | |
147 | return 0; | |
148 | ||
149 | if (*(kbd->leds) == kbd->newleds) | |
150 | return 0; | |
151 | ||
152 | *(kbd->leds) = kbd->newleds; | |
153 | kbd->led->dev = kbd->usbdev; | |
154 | if (usb_submit_urb(kbd->led, GFP_ATOMIC)) | |
155 | err("usb_submit_urb(leds) failed"); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
7d12e780 | 160 | static void usb_kbd_led(struct urb *urb) |
1da177e4 LT |
161 | { |
162 | struct usb_kbd *kbd = urb->context; | |
163 | ||
164 | if (urb->status) | |
165 | warn("led urb status %d received", urb->status); | |
05f091ab | 166 | |
1da177e4 LT |
167 | if (*(kbd->leds) == kbd->newleds) |
168 | return; | |
169 | ||
170 | *(kbd->leds) = kbd->newleds; | |
171 | kbd->led->dev = kbd->usbdev; | |
172 | if (usb_submit_urb(kbd->led, GFP_ATOMIC)) | |
173 | err("usb_submit_urb(leds) failed"); | |
174 | } | |
175 | ||
176 | static int usb_kbd_open(struct input_dev *dev) | |
177 | { | |
178 | struct usb_kbd *kbd = dev->private; | |
179 | ||
1da177e4 | 180 | kbd->irq->dev = kbd->usbdev; |
65cde54b | 181 | if (usb_submit_urb(kbd->irq, GFP_KERNEL)) |
1da177e4 | 182 | return -EIO; |
1da177e4 LT |
183 | |
184 | return 0; | |
185 | } | |
186 | ||
187 | static void usb_kbd_close(struct input_dev *dev) | |
188 | { | |
189 | struct usb_kbd *kbd = dev->private; | |
190 | ||
65cde54b | 191 | usb_kill_urb(kbd->irq); |
1da177e4 LT |
192 | } |
193 | ||
194 | static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd) | |
195 | { | |
196 | if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL))) | |
197 | return -1; | |
198 | if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL))) | |
199 | return -1; | |
54e6ecb2 | 200 | if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma))) |
1da177e4 | 201 | return -1; |
54e6ecb2 | 202 | if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma))) |
1da177e4 | 203 | return -1; |
54e6ecb2 | 204 | if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma))) |
1da177e4 LT |
205 | return -1; |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd) | |
211 | { | |
4ba0b2ed MK |
212 | usb_free_urb(kbd->irq); |
213 | usb_free_urb(kbd->led); | |
1da177e4 LT |
214 | if (kbd->new) |
215 | usb_buffer_free(dev, 8, kbd->new, kbd->new_dma); | |
216 | if (kbd->cr) | |
217 | usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma); | |
218 | if (kbd->leds) | |
219 | usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma); | |
220 | } | |
221 | ||
05f091ab | 222 | static int usb_kbd_probe(struct usb_interface *iface, |
1da177e4 LT |
223 | const struct usb_device_id *id) |
224 | { | |
c5b7c7c3 | 225 | struct usb_device *dev = interface_to_usbdev(iface); |
1da177e4 LT |
226 | struct usb_host_interface *interface; |
227 | struct usb_endpoint_descriptor *endpoint; | |
228 | struct usb_kbd *kbd; | |
c5b7c7c3 | 229 | struct input_dev *input_dev; |
1da177e4 | 230 | int i, pipe, maxp; |
5d6341c6 | 231 | int error = -ENOMEM; |
1da177e4 LT |
232 | |
233 | interface = iface->cur_altsetting; | |
234 | ||
235 | if (interface->desc.bNumEndpoints != 1) | |
236 | return -ENODEV; | |
237 | ||
238 | endpoint = &interface->endpoint[0].desc; | |
a20c3144 | 239 | if (!usb_endpoint_is_int_in(endpoint)) |
1da177e4 LT |
240 | return -ENODEV; |
241 | ||
242 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
243 | maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); | |
244 | ||
c5b7c7c3 DT |
245 | kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL); |
246 | input_dev = input_allocate_device(); | |
247 | if (!kbd || !input_dev) | |
248 | goto fail1; | |
1da177e4 | 249 | |
c5b7c7c3 DT |
250 | if (usb_kbd_alloc_mem(dev, kbd)) |
251 | goto fail2; | |
1da177e4 LT |
252 | |
253 | kbd->usbdev = dev; | |
c5b7c7c3 DT |
254 | kbd->dev = input_dev; |
255 | ||
256 | if (dev->manufacturer) | |
257 | strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name)); | |
258 | ||
259 | if (dev->product) { | |
260 | if (dev->manufacturer) | |
261 | strlcat(kbd->name, " ", sizeof(kbd->name)); | |
262 | strlcat(kbd->name, dev->product, sizeof(kbd->name)); | |
263 | } | |
264 | ||
265 | if (!strlen(kbd->name)) | |
266 | snprintf(kbd->name, sizeof(kbd->name), | |
267 | "USB HIDBP Keyboard %04x:%04x", | |
268 | le16_to_cpu(dev->descriptor.idVendor), | |
269 | le16_to_cpu(dev->descriptor.idProduct)); | |
270 | ||
271 | usb_make_path(dev, kbd->phys, sizeof(kbd->phys)); | |
272 | strlcpy(kbd->phys, "/input0", sizeof(kbd->phys)); | |
1da177e4 | 273 | |
c5b7c7c3 DT |
274 | input_dev->name = kbd->name; |
275 | input_dev->phys = kbd->phys; | |
276 | usb_to_input_id(dev, &input_dev->id); | |
277 | input_dev->cdev.dev = &iface->dev; | |
278 | input_dev->private = kbd; | |
279 | ||
280 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP); | |
281 | input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA); | |
1da177e4 LT |
282 | |
283 | for (i = 0; i < 255; i++) | |
c5b7c7c3 DT |
284 | set_bit(usb_kbd_keycode[i], input_dev->keybit); |
285 | clear_bit(0, input_dev->keybit); | |
05f091ab | 286 | |
c5b7c7c3 DT |
287 | input_dev->event = usb_kbd_event; |
288 | input_dev->open = usb_kbd_open; | |
289 | input_dev->close = usb_kbd_close; | |
1da177e4 LT |
290 | |
291 | usb_fill_int_urb(kbd->irq, dev, pipe, | |
292 | kbd->new, (maxp > 8 ? 8 : maxp), | |
293 | usb_kbd_irq, kbd, endpoint->bInterval); | |
294 | kbd->irq->transfer_dma = kbd->new_dma; | |
295 | kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
296 | ||
297 | kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE; | |
298 | kbd->cr->bRequest = 0x09; | |
299 | kbd->cr->wValue = cpu_to_le16(0x200); | |
300 | kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber); | |
301 | kbd->cr->wLength = cpu_to_le16(1); | |
302 | ||
1da177e4 LT |
303 | usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0), |
304 | (void *) kbd->cr, kbd->leds, 1, | |
305 | usb_kbd_led, kbd); | |
306 | kbd->led->setup_dma = kbd->cr_dma; | |
307 | kbd->led->transfer_dma = kbd->leds_dma; | |
c5b7c7c3 | 308 | kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); |
1da177e4 | 309 | |
5d6341c6 DT |
310 | error = input_register_device(kbd->dev); |
311 | if (error) | |
312 | goto fail2; | |
1da177e4 LT |
313 | |
314 | usb_set_intfdata(iface, kbd); | |
315 | return 0; | |
c5b7c7c3 | 316 | |
5d6341c6 DT |
317 | fail2: |
318 | usb_kbd_free_mem(dev, kbd); | |
319 | fail1: | |
320 | input_free_device(input_dev); | |
c5b7c7c3 | 321 | kfree(kbd); |
5d6341c6 | 322 | return error; |
1da177e4 LT |
323 | } |
324 | ||
325 | static void usb_kbd_disconnect(struct usb_interface *intf) | |
326 | { | |
327 | struct usb_kbd *kbd = usb_get_intfdata (intf); | |
05f091ab | 328 | |
1da177e4 LT |
329 | usb_set_intfdata(intf, NULL); |
330 | if (kbd) { | |
331 | usb_kill_urb(kbd->irq); | |
c5b7c7c3 | 332 | input_unregister_device(kbd->dev); |
1da177e4 LT |
333 | usb_kbd_free_mem(interface_to_usbdev(intf), kbd); |
334 | kfree(kbd); | |
335 | } | |
336 | } | |
337 | ||
338 | static struct usb_device_id usb_kbd_id_table [] = { | |
4ef2e23f MO |
339 | { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT, |
340 | USB_INTERFACE_PROTOCOL_KEYBOARD) }, | |
1da177e4 LT |
341 | { } /* Terminating entry */ |
342 | }; | |
343 | ||
344 | MODULE_DEVICE_TABLE (usb, usb_kbd_id_table); | |
345 | ||
346 | static struct usb_driver usb_kbd_driver = { | |
1da177e4 LT |
347 | .name = "usbkbd", |
348 | .probe = usb_kbd_probe, | |
349 | .disconnect = usb_kbd_disconnect, | |
350 | .id_table = usb_kbd_id_table, | |
351 | }; | |
352 | ||
353 | static int __init usb_kbd_init(void) | |
354 | { | |
355 | int result = usb_register(&usb_kbd_driver); | |
356 | if (result == 0) | |
357 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
358 | return result; | |
359 | } | |
360 | ||
361 | static void __exit usb_kbd_exit(void) | |
362 | { | |
363 | usb_deregister(&usb_kbd_driver); | |
364 | } | |
365 | ||
366 | module_init(usb_kbd_init); | |
367 | module_exit(usb_kbd_exit); |