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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> | |
32 | #include <linux/input.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/usb.h> | |
16a334c0 | 35 | #include <linux/usb_input.h> |
1da177e4 LT |
36 | |
37 | /* | |
38 | * Version Information | |
39 | */ | |
40 | #define DRIVER_VERSION "" | |
41 | #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>" | |
42 | #define DRIVER_DESC "USB HID Boot Protocol keyboard driver" | |
43 | #define DRIVER_LICENSE "GPL" | |
44 | ||
45 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
46 | MODULE_DESCRIPTION(DRIVER_DESC); | |
47 | MODULE_LICENSE(DRIVER_LICENSE); | |
48 | ||
49 | static unsigned char usb_kbd_keycode[256] = { | |
50 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, | |
51 | 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, | |
52 | 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, | |
53 | 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, | |
54 | 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, | |
55 | 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, | |
56 | 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, | |
57 | 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, | |
58 | 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0, | |
59 | 122,123, 90, 91, 85, 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 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
64 | 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, | |
65 | 150,158,159,128,136,177,178,176,142,152,173,140 | |
66 | }; | |
67 | ||
68 | struct usb_kbd { | |
c5b7c7c3 | 69 | struct input_dev *dev; |
1da177e4 LT |
70 | struct usb_device *usbdev; |
71 | unsigned char old[8]; | |
72 | struct urb *irq, *led; | |
73 | unsigned char newleds; | |
74 | char name[128]; | |
75 | char phys[64]; | |
1da177e4 LT |
76 | |
77 | unsigned char *new; | |
78 | struct usb_ctrlrequest *cr; | |
79 | unsigned char *leds; | |
80 | dma_addr_t cr_dma; | |
81 | dma_addr_t new_dma; | |
82 | dma_addr_t leds_dma; | |
83 | }; | |
84 | ||
85 | static void usb_kbd_irq(struct urb *urb, struct pt_regs *regs) | |
86 | { | |
87 | struct usb_kbd *kbd = urb->context; | |
88 | int i; | |
89 | ||
90 | switch (urb->status) { | |
91 | case 0: /* success */ | |
92 | break; | |
93 | case -ECONNRESET: /* unlink */ | |
94 | case -ENOENT: | |
95 | case -ESHUTDOWN: | |
96 | return; | |
97 | /* -EPIPE: should clear the halt */ | |
98 | default: /* error */ | |
99 | goto resubmit; | |
100 | } | |
101 | ||
c5b7c7c3 | 102 | input_regs(kbd->dev, regs); |
1da177e4 LT |
103 | |
104 | for (i = 0; i < 8; i++) | |
c5b7c7c3 | 105 | input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1); |
1da177e4 LT |
106 | |
107 | for (i = 2; i < 8; i++) { | |
108 | ||
109 | if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) { | |
110 | if (usb_kbd_keycode[kbd->old[i]]) | |
c5b7c7c3 | 111 | input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0); |
1da177e4 LT |
112 | else |
113 | info("Unknown key (scancode %#x) released.", kbd->old[i]); | |
114 | } | |
115 | ||
116 | if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) { | |
117 | if (usb_kbd_keycode[kbd->new[i]]) | |
c5b7c7c3 | 118 | input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1); |
1da177e4 LT |
119 | else |
120 | info("Unknown key (scancode %#x) pressed.", kbd->new[i]); | |
121 | } | |
122 | } | |
123 | ||
c5b7c7c3 | 124 | input_sync(kbd->dev); |
1da177e4 LT |
125 | |
126 | memcpy(kbd->old, kbd->new, 8); | |
127 | ||
128 | resubmit: | |
129 | i = usb_submit_urb (urb, SLAB_ATOMIC); | |
130 | if (i) | |
131 | err ("can't resubmit intr, %s-%s/input0, status %d", | |
132 | kbd->usbdev->bus->bus_name, | |
133 | kbd->usbdev->devpath, i); | |
134 | } | |
135 | ||
be5e3383 AB |
136 | static int usb_kbd_event(struct input_dev *dev, unsigned int type, |
137 | unsigned int code, int value) | |
1da177e4 LT |
138 | { |
139 | struct usb_kbd *kbd = dev->private; | |
140 | ||
141 | if (type != EV_LED) | |
142 | return -1; | |
143 | ||
144 | ||
145 | kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
146 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
147 | (!!test_bit(LED_NUML, dev->led)); | |
148 | ||
149 | if (kbd->led->status == -EINPROGRESS) | |
150 | return 0; | |
151 | ||
152 | if (*(kbd->leds) == kbd->newleds) | |
153 | return 0; | |
154 | ||
155 | *(kbd->leds) = kbd->newleds; | |
156 | kbd->led->dev = kbd->usbdev; | |
157 | if (usb_submit_urb(kbd->led, GFP_ATOMIC)) | |
158 | err("usb_submit_urb(leds) failed"); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static void usb_kbd_led(struct urb *urb, struct pt_regs *regs) | |
164 | { | |
165 | struct usb_kbd *kbd = urb->context; | |
166 | ||
167 | if (urb->status) | |
168 | warn("led urb status %d received", urb->status); | |
05f091ab | 169 | |
1da177e4 LT |
170 | if (*(kbd->leds) == kbd->newleds) |
171 | return; | |
172 | ||
173 | *(kbd->leds) = kbd->newleds; | |
174 | kbd->led->dev = kbd->usbdev; | |
175 | if (usb_submit_urb(kbd->led, GFP_ATOMIC)) | |
176 | err("usb_submit_urb(leds) failed"); | |
177 | } | |
178 | ||
179 | static int usb_kbd_open(struct input_dev *dev) | |
180 | { | |
181 | struct usb_kbd *kbd = dev->private; | |
182 | ||
1da177e4 | 183 | kbd->irq->dev = kbd->usbdev; |
65cde54b | 184 | if (usb_submit_urb(kbd->irq, GFP_KERNEL)) |
1da177e4 | 185 | return -EIO; |
1da177e4 LT |
186 | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static void usb_kbd_close(struct input_dev *dev) | |
191 | { | |
192 | struct usb_kbd *kbd = dev->private; | |
193 | ||
65cde54b | 194 | usb_kill_urb(kbd->irq); |
1da177e4 LT |
195 | } |
196 | ||
197 | static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd) | |
198 | { | |
199 | if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL))) | |
200 | return -1; | |
201 | if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL))) | |
202 | return -1; | |
203 | if (!(kbd->new = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kbd->new_dma))) | |
204 | return -1; | |
205 | if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), SLAB_ATOMIC, &kbd->cr_dma))) | |
206 | return -1; | |
207 | if (!(kbd->leds = usb_buffer_alloc(dev, 1, SLAB_ATOMIC, &kbd->leds_dma))) | |
208 | return -1; | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd) | |
214 | { | |
215 | if (kbd->irq) | |
216 | usb_free_urb(kbd->irq); | |
217 | if (kbd->led) | |
218 | usb_free_urb(kbd->led); | |
219 | if (kbd->new) | |
220 | usb_buffer_free(dev, 8, kbd->new, kbd->new_dma); | |
221 | if (kbd->cr) | |
222 | usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma); | |
223 | if (kbd->leds) | |
224 | usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma); | |
225 | } | |
226 | ||
05f091ab | 227 | static int usb_kbd_probe(struct usb_interface *iface, |
1da177e4 LT |
228 | const struct usb_device_id *id) |
229 | { | |
c5b7c7c3 | 230 | struct usb_device *dev = interface_to_usbdev(iface); |
1da177e4 LT |
231 | struct usb_host_interface *interface; |
232 | struct usb_endpoint_descriptor *endpoint; | |
233 | struct usb_kbd *kbd; | |
c5b7c7c3 | 234 | struct input_dev *input_dev; |
1da177e4 | 235 | int i, pipe, maxp; |
1da177e4 LT |
236 | |
237 | interface = iface->cur_altsetting; | |
238 | ||
239 | if (interface->desc.bNumEndpoints != 1) | |
240 | return -ENODEV; | |
241 | ||
242 | endpoint = &interface->endpoint[0].desc; | |
c5b7c7c3 | 243 | if (!(endpoint->bEndpointAddress & USB_DIR_IN)) |
1da177e4 | 244 | return -ENODEV; |
c5b7c7c3 | 245 | if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) |
1da177e4 LT |
246 | return -ENODEV; |
247 | ||
248 | pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); | |
249 | maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); | |
250 | ||
c5b7c7c3 DT |
251 | kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL); |
252 | input_dev = input_allocate_device(); | |
253 | if (!kbd || !input_dev) | |
254 | goto fail1; | |
1da177e4 | 255 | |
c5b7c7c3 DT |
256 | if (usb_kbd_alloc_mem(dev, kbd)) |
257 | goto fail2; | |
1da177e4 LT |
258 | |
259 | kbd->usbdev = dev; | |
c5b7c7c3 DT |
260 | kbd->dev = input_dev; |
261 | ||
262 | if (dev->manufacturer) | |
263 | strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name)); | |
264 | ||
265 | if (dev->product) { | |
266 | if (dev->manufacturer) | |
267 | strlcat(kbd->name, " ", sizeof(kbd->name)); | |
268 | strlcat(kbd->name, dev->product, sizeof(kbd->name)); | |
269 | } | |
270 | ||
271 | if (!strlen(kbd->name)) | |
272 | snprintf(kbd->name, sizeof(kbd->name), | |
273 | "USB HIDBP Keyboard %04x:%04x", | |
274 | le16_to_cpu(dev->descriptor.idVendor), | |
275 | le16_to_cpu(dev->descriptor.idProduct)); | |
276 | ||
277 | usb_make_path(dev, kbd->phys, sizeof(kbd->phys)); | |
278 | strlcpy(kbd->phys, "/input0", sizeof(kbd->phys)); | |
1da177e4 | 279 | |
c5b7c7c3 DT |
280 | input_dev->name = kbd->name; |
281 | input_dev->phys = kbd->phys; | |
282 | usb_to_input_id(dev, &input_dev->id); | |
283 | input_dev->cdev.dev = &iface->dev; | |
284 | input_dev->private = kbd; | |
285 | ||
286 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP); | |
287 | input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA); | |
1da177e4 LT |
288 | |
289 | for (i = 0; i < 255; i++) | |
c5b7c7c3 DT |
290 | set_bit(usb_kbd_keycode[i], input_dev->keybit); |
291 | clear_bit(0, input_dev->keybit); | |
05f091ab | 292 | |
c5b7c7c3 DT |
293 | input_dev->event = usb_kbd_event; |
294 | input_dev->open = usb_kbd_open; | |
295 | input_dev->close = usb_kbd_close; | |
1da177e4 LT |
296 | |
297 | usb_fill_int_urb(kbd->irq, dev, pipe, | |
298 | kbd->new, (maxp > 8 ? 8 : maxp), | |
299 | usb_kbd_irq, kbd, endpoint->bInterval); | |
300 | kbd->irq->transfer_dma = kbd->new_dma; | |
301 | kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
302 | ||
303 | kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE; | |
304 | kbd->cr->bRequest = 0x09; | |
305 | kbd->cr->wValue = cpu_to_le16(0x200); | |
306 | kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber); | |
307 | kbd->cr->wLength = cpu_to_le16(1); | |
308 | ||
1da177e4 LT |
309 | usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0), |
310 | (void *) kbd->cr, kbd->leds, 1, | |
311 | usb_kbd_led, kbd); | |
312 | kbd->led->setup_dma = kbd->cr_dma; | |
313 | kbd->led->transfer_dma = kbd->leds_dma; | |
c5b7c7c3 | 314 | kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); |
1da177e4 | 315 | |
c5b7c7c3 | 316 | input_register_device(kbd->dev); |
1da177e4 LT |
317 | |
318 | usb_set_intfdata(iface, kbd); | |
319 | return 0; | |
c5b7c7c3 DT |
320 | |
321 | fail2: usb_kbd_free_mem(dev, kbd); | |
322 | fail1: input_free_device(input_dev); | |
323 | kfree(kbd); | |
324 | return -ENOMEM; | |
1da177e4 LT |
325 | } |
326 | ||
327 | static void usb_kbd_disconnect(struct usb_interface *intf) | |
328 | { | |
329 | struct usb_kbd *kbd = usb_get_intfdata (intf); | |
05f091ab | 330 | |
1da177e4 LT |
331 | usb_set_intfdata(intf, NULL); |
332 | if (kbd) { | |
333 | usb_kill_urb(kbd->irq); | |
c5b7c7c3 | 334 | input_unregister_device(kbd->dev); |
1da177e4 LT |
335 | usb_kbd_free_mem(interface_to_usbdev(intf), kbd); |
336 | kfree(kbd); | |
337 | } | |
338 | } | |
339 | ||
340 | static struct usb_device_id usb_kbd_id_table [] = { | |
341 | { USB_INTERFACE_INFO(3, 1, 1) }, | |
342 | { } /* Terminating entry */ | |
343 | }; | |
344 | ||
345 | MODULE_DEVICE_TABLE (usb, usb_kbd_id_table); | |
346 | ||
347 | static struct usb_driver usb_kbd_driver = { | |
1da177e4 LT |
348 | .name = "usbkbd", |
349 | .probe = usb_kbd_probe, | |
350 | .disconnect = usb_kbd_disconnect, | |
351 | .id_table = usb_kbd_id_table, | |
352 | }; | |
353 | ||
354 | static int __init usb_kbd_init(void) | |
355 | { | |
356 | int result = usb_register(&usb_kbd_driver); | |
357 | if (result == 0) | |
358 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
359 | return result; | |
360 | } | |
361 | ||
362 | static void __exit usb_kbd_exit(void) | |
363 | { | |
364 | usb_deregister(&usb_kbd_driver); | |
365 | } | |
366 | ||
367 | module_init(usb_kbd_init); | |
368 | module_exit(usb_kbd_exit); |