]> git.ipfire.org Git - people/ms/u-boot.git/blame - common/usb_kbd.c
projects / people / ms / u-boot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
* Get (mostly) rid of CFG_MONITOR_LEN definition; compute real length
[people/ms/u-boot.git] / common / usb_kbd.c
CommitLineData
affae2bf
WD		 1/*
2 * (C) Copyright 2001
3 * Denis Peter, MPL AG Switzerland
4 *
5 * Part of this source has been derived from the Linux USB
6 * project.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 *
26 */
27#include <common.h>
28#include <devices.h>
29
30#ifdef CONFIG_USB_KEYBOARD
31
32#include <usb.h>
33
34#undef USB_KBD_DEBUG
35/*
36 * if overwrite_console returns 1, the stdin, stderr and stdout
37 * are switched to the serial port, else the settings in the
38 * environment are used
39 */
40#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE
41extern int overwrite_console (void);
42#else
43int overwrite_console (void)
44{
45 return (0);
46}
47#endif
48
49#ifdef USB_KBD_DEBUG
50#define USB_KBD_PRINTF(fmt,args...) printf (fmt ,##args)
51#else
52#define USB_KBD_PRINTF(fmt,args...)
53#endif
54
55
56#define REPEAT_RATE 40/4 /* 40msec -> 25cps */
57#define REPEAT_DELAY 10 /* 10 x REAPEAT_RATE = 400msec */
58
59#define NUM_LOCK 0x53
60#define CAPS_LOCK 0x39
61#define SCROLL_LOCK 0x47
62
63
64/* Modifier bits */
65#define LEFT_CNTR 0
66#define LEFT_SHIFT 1
67#define LEFT_ALT 2
68#define LEFT_GUI 3
69#define RIGHT_CNTR 4
70#define RIGHT_SHIFT 5
71#define RIGHT_ALT 6
72#define RIGHT_GUI 7
73
74#define USB_KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */
75
76static volatile char usb_kbd_buffer[USB_KBD_BUFFER_LEN];
77static volatile int usb_in_pointer = 0;
78static volatile int usb_out_pointer = 0;
79
80unsigned char new[8];
81unsigned char old[8];
82int repeat_delay;
83#define DEVNAME "usbkbd"
84static unsigned char num_lock = 0;
85static unsigned char caps_lock = 0;
86static unsigned char scroll_lock = 0;
87
88static unsigned char leds __attribute__ ((aligned (0x4)));
89
90static unsigned char usb_kbd_numkey[] = {
91 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0','\r',0x1b,'\b','\t',' ', '-',
92 '=', '[', ']','\\', '#', ';', '\'', '`', ',', '.', '/'
93};
94static unsigned char usb_kbd_numkey_shifted[] = {
95 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')','\r',0x1b,'\b','\t',' ', '_',
96 '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?'
97};
98
99/******************************************************************
100 * Queue handling
101 ******************************************************************/
102/* puts character in the queue and sets up the in and out pointer */
103static void usb_kbd_put_queue(char data)
104{
105 if((usb_in_pointer+1)==USB_KBD_BUFFER_LEN) {
106 if(usb_out_pointer==0) {
107 return; /* buffer full */
108 } else{
109 usb_in_pointer=0;
110 }
111 } else {
112 if((usb_in_pointer+1)==usb_out_pointer)
113 return; /* buffer full */
114 usb_in_pointer++;
115 }
116 usb_kbd_buffer[usb_in_pointer]=data;
117 return;
118}
119
120/* test if a character is in the queue */
121static int usb_kbd_testc(void)
122{
123 if(usb_in_pointer==usb_out_pointer)
124 return(0); /* no data */
125 else
126 return(1);
127}
128/* gets the character from the queue */
129static int usb_kbd_getc(void)
130{
131 char c;
132 while(usb_in_pointer==usb_out_pointer);
133 if((usb_out_pointer+1)==USB_KBD_BUFFER_LEN)
134 usb_out_pointer=0;
135 else
136 usb_out_pointer++;
137 c=usb_kbd_buffer[usb_out_pointer];
138 return (int)c;
139
140}
141
142/* forward decleration */
143static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum);
144
145/* search for keyboard and register it if found */
146int drv_usb_kbd_init(void)
147{
148 int error,i,index;
149 device_t usb_kbd_dev,*old_dev;
150 struct usb_device *dev;
151 char *stdinname = getenv ("stdin");
152
153 usb_in_pointer=0;
154 usb_out_pointer=0;
155 /* scan all USB Devices */
156 for(i=0;i<USB_MAX_DEVICE;i++) {
157 dev=usb_get_dev_index(i); /* get device */
158 if(dev->devnum!=-1) {
159 if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */
160 /* check, if it is already registered */
161 USB_KBD_PRINTF("USB KBD found set up device.\n");
162 for (index=1; index<=ListNumItems(devlist); index++) {
163 old_dev = ListGetPtrToItem(devlist, index);
164 if(strcmp(old_dev->name,DEVNAME)==0) {
165 /* ok, already registered, just return ok */
166 USB_KBD_PRINTF("USB KBD is already registered.\n");
167 return 1;
168 }
169 }
170 /* register the keyboard */
171 USB_KBD_PRINTF("USB KBD register.\n");
172 memset (&usb_kbd_dev, 0, sizeof(device_t));
173 strcpy(usb_kbd_dev.name, DEVNAME);
174 usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
175 usb_kbd_dev.putc = NULL;
176 usb_kbd_dev.puts = NULL;
177 usb_kbd_dev.getc = usb_kbd_getc;
178 usb_kbd_dev.tstc = usb_kbd_testc;
179 error = device_register (&usb_kbd_dev);
180 if(error==0) {
181 /* check if this is the standard input device */
182 if(strcmp(stdinname,DEVNAME)==0) {
183 /* reassign the console */
184 if(overwrite_console()) {
185 return 1;
186 }
187 error=console_assign(stdin,DEVNAME);
188 if(error==0)
189 return 1;
190 else
191 return error;
192 }
193 return 1;
194 }
195 return error;
196 }
197 }
198 }
199 /* no USB Keyboard found */
200 return -1;
201}
202
203
204/* deregistering the keyboard */
205int usb_kbd_deregister(void)
206{
207 return device_deregister(DEVNAME);
208}
209
210/**************************************************************************
211 * Low Level drivers
212 */
213
214/* set the LEDs. Since this is used in the irq routine, the control job
215 is issued with a timeout of 0. This means, that the job is queued without
216 waiting for job completion */
217
218static void usb_kbd_setled(struct usb_device *dev)
219{
220 struct usb_interface_descriptor *iface;
221 iface = &dev->config.if_desc[0];
222 leds=0;
223 if(scroll_lock!=0)
224 leds|=1;
225 leds<<=1;
226 if(caps_lock!=0)
227 leds|=1;
228 leds<<=1;
229 if(num_lock!=0)
230 leds|=1;
231 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
232 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
233 0x200, iface->bInterfaceNumber,(void *)&leds, 1, 0);
234
235}
236
237
238#define CAPITAL_MASK 0x20
239/* Translate the scancode in ASCII */
240static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed)
241{
242 unsigned char keycode;
243
244 if(pressed==0) {
245 /* key released */
246 repeat_delay=0;
247 return 0;
248 }
249 if(pressed==2) {
250 repeat_delay++;
251 if(repeat_delay<REPEAT_DELAY)
252 return 0;
253 repeat_delay=REPEAT_DELAY;
254 }
255 keycode=0;
256 if((scancode>3) && (scancode<0x1d)) { /* alpha numeric values */
257 keycode=scancode-4 + 0x61;
258 if(caps_lock)
259 keycode&=~CAPITAL_MASK; /* switch to capital Letters */
260 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) {
261 if(keycode & CAPITAL_MASK)
262 keycode&=~CAPITAL_MASK; /* switch to capital Letters */
263 else
264 keycode|=CAPITAL_MASK; /* switch to non capital Letters */
265 }
266 }
267 if((scancode>0x1d) && (scancode<0x3A)) {
268 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) /* shifted */
269 keycode=usb_kbd_numkey_shifted[scancode-0x1e];
270 else /* non shifted */
271 keycode=usb_kbd_numkey[scancode-0x1e];
272 }
273 if(pressed==1) {
274 if(scancode==NUM_LOCK) {
275 num_lock=~num_lock;
276 return 1;
277 }
278 if(scancode==CAPS_LOCK) {
279 caps_lock=~caps_lock;
280 return 1;
281 }
282 if(scancode==SCROLL_LOCK) {
283 scroll_lock=~scroll_lock;
284 return 1;
285 }
286 }
287 if(keycode!=0) {
288 USB_KBD_PRINTF("%c",keycode);
289 usb_kbd_put_queue(keycode);
290 }
291 return 0;
292}
293
294/* Interrupt service routine */
295static int usb_kbd_irq(struct usb_device *dev)
296{
297 int i,res;
298
299 if((dev->irq_status!=0)||(dev->irq_act_len!=8))
300 {
301 USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len);
302 return 1;
303 }
304 res=0;
305 for (i = 2; i < 8; i++) {
306 if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) {
307 res|=usb_kbd_translate(old[i],new[0],0);
308 }
309 if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) {
310 res|=usb_kbd_translate(new[i],new[0],1);
311 }
312 }
313 if((new[2]>3) && (old[2]==new[2])) /* still pressed */
314 res|=usb_kbd_translate(new[2],new[0],2);
315 if(res==1)
316 usb_kbd_setled(dev);
317 memcpy(&old[0],&new[0], 8);
318 return 1; /* install IRQ Handler again */
319}
320
321/* probes the USB device dev for keyboard type */
322static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
323{
324 struct usb_interface_descriptor *iface;
325 struct usb_endpoint_descriptor *ep;
326 int pipe,maxp;
327
328 if (dev->descriptor.bNumConfigurations != 1) return 0;
329 iface = &dev->config.if_desc[ifnum];
330
331 if (iface->bInterfaceClass != 3) return 0;
332 if (iface->bInterfaceSubClass != 1) return 0;
333 if (iface->bInterfaceProtocol != 1) return 0;
334 if (iface->bNumEndpoints != 1) return 0;
335
336 ep = &iface->ep_desc[0];
337
338 if (!(ep->bEndpointAddress & 0x80)) return 0;
339 if ((ep->bmAttributes & 3) != 3) return 0;
340 USB_KBD_PRINTF("USB KBD found set protocol...\n");
341 /* ok, we found a USB Keyboard, install it */
342 /* usb_kbd_get_hid_desc(dev); */
343 usb_set_protocol(dev, iface->bInterfaceNumber, 0);
344 USB_KBD_PRINTF("USB KBD found set idle...\n");
345 usb_set_idle(dev, iface->bInterfaceNumber, REPEAT_RATE, 0);
346 memset(&new[0], 0, 8);
347 memset(&old[0], 0, 8);
348 repeat_delay=0;
349 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
350 maxp = usb_maxpacket(dev, pipe);
351 dev->irq_handle=usb_kbd_irq;
352 USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n");
353 usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval);
354 return 1;
355}
356
357
358#if 0
359struct usb_hid_descriptor {
360 unsigned char bLength;
361 unsigned char bDescriptorType; /* 0x21 for HID */
362 unsigned short bcdHID; /* release number */
363 unsigned char bCountryCode;
364 unsigned char bNumDescriptors;
365 unsigned char bReportDescriptorType;
366 unsigned short wDescriptorLength;
367} __attribute__ ((packed));
368
369/*
370 * We parse each description item into this structure. Short items data
371 * values are expanded to 32-bit signed int, long items contain a pointer
372 * into the data area.
373 */
374
375struct hid_item {
376 unsigned char format;
377 unsigned char size;
378 unsigned char type;
379 unsigned char tag;
380 union {
381 unsigned char u8;
382 char s8;
383 unsigned short u16;
384 short s16;
385 unsigned long u32;
386 long s32;
387 unsigned char *longdata;
388 } data;
389};
390
391/*
392 * HID report item format
393 */
394
395#define HID_ITEM_FORMAT_SHORT 0
396#define HID_ITEM_FORMAT_LONG 1
397
398/*
399 * Special tag indicating long items
400 */
401
402#define HID_ITEM_TAG_LONG 15
403
404
405
406static struct usb_hid_descriptor usb_kbd_hid_desc;
407
408void usb_kbd_display_hid(struct usb_hid_descriptor *hid)
409{
410 printf("USB_HID_DESC:\n");
411 printf(" bLenght 0x%x\n",hid->bLength);
412 printf(" bcdHID 0x%x\n",hid->bcdHID);
413 printf(" bCountryCode %d\n",hid->bCountryCode);
414 printf(" bNumDescriptors 0x%x\n",hid->bNumDescriptors);
415 printf(" bReportDescriptorType 0x%x\n",hid->bReportDescriptorType);
416 printf(" wDescriptorLength 0x%x\n",hid->wDescriptorLength);
417}
418
419
420/*
421 * Fetch a report description item from the data stream. We support long
422 * items, though they are not used yet.
423 */
424
425static int fetch_item(unsigned char *start,unsigned char *end, struct hid_item *item)
426{
427 if((end - start) > 0) {
428 unsigned char b = *start++;
429 item->type = (b >> 2) & 3;
430 item->tag = (b >> 4) & 15;
431 if (item->tag == HID_ITEM_TAG_LONG) {
432 item->format = HID_ITEM_FORMAT_LONG;
433 if ((end - start) >= 2) {
434 item->size = *start++;
435 item->tag = *start++;
436 if ((end - start) >= item->size) {
437 item->data.longdata = start;
438 start += item->size;
439 return item->size;
440 }
441 }
442 } else {
443 item->format = HID_ITEM_FORMAT_SHORT;
444 item->size = b & 3;
445 switch (item->size) {
446 case 0:
447 return item->size;
448 case 1:
449 if ((end - start) >= 1) {
450 item->data.u8 = *start++;
451 return item->size;
452 }
453 break;
454 case 2:
455 if ((end - start) >= 2) {
456 item->data.u16 = swap_16((unsigned short *)start);
457 start+=2;
458 return item->size;
459 }
460 case 3:
461 item->size++;
462 if ((end - start) >= 4) {
463 item->data.u32 = swap_32((unsigned long *)start);
464 start+=4;
465 return item->size;
466 }
467 }
468 }
469 }
470 return -1;
471}
472
473/*
474 * HID report descriptor item type (prefix bit 2,3)
475 */
476
477#define HID_ITEM_TYPE_MAIN 0
478#define HID_ITEM_TYPE_GLOBAL 1
479#define HID_ITEM_TYPE_LOCAL 2
480#define HID_ITEM_TYPE_RESERVED 3
481/*
482 * HID report descriptor main item tags
483 */
484
485#define HID_MAIN_ITEM_TAG_INPUT 8
486#define HID_MAIN_ITEM_TAG_OUTPUT 9
487#define HID_MAIN_ITEM_TAG_FEATURE 11
488#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
489#define HID_MAIN_ITEM_TAG_END_COLLECTION 12
490/*
491 * HID report descriptor main item contents
492 */
493
494#define HID_MAIN_ITEM_CONSTANT 0x001
495#define HID_MAIN_ITEM_VARIABLE 0x002
496#define HID_MAIN_ITEM_RELATIVE 0x004
497#define HID_MAIN_ITEM_WRAP 0x008
498#define HID_MAIN_ITEM_NONLINEAR 0x010
499#define HID_MAIN_ITEM_NO_PREFERRED 0x020
500#define HID_MAIN_ITEM_NULL_STATE 0x040
501#define HID_MAIN_ITEM_VOLATILE 0x080
502#define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
503
504/*
505 * HID report descriptor collection item types
506 */
507
508#define HID_COLLECTION_PHYSICAL 0
509#define HID_COLLECTION_APPLICATION 1
510#define HID_COLLECTION_LOGICAL 2
511/*
512 * HID report descriptor global item tags
513 */
514
515#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
516#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
517#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
518#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
519#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
520#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
521#define HID_GLOBAL_ITEM_TAG_UNIT 6
522#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
523#define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
524#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
525#define HID_GLOBAL_ITEM_TAG_PUSH 10
526#define HID_GLOBAL_ITEM_TAG_POP 11
527
528/*
529 * HID report descriptor local item tags
530 */
531
532#define HID_LOCAL_ITEM_TAG_USAGE 0
533#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
534#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
535#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
536#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
537#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
538#define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
539#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
540#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
541#define HID_LOCAL_ITEM_TAG_DELIMITER 10
542
543
544
545static void usb_kbd_show_item(struct hid_item *item)
546{
547 switch(item->type) {
548 case HID_ITEM_TYPE_MAIN:
549 switch(item->tag) {
550 case HID_MAIN_ITEM_TAG_INPUT:
551 printf("Main Input");
552 break;
553 case HID_MAIN_ITEM_TAG_OUTPUT:
554 printf("Main Output");
555 break;
556 case HID_MAIN_ITEM_TAG_FEATURE:
557 printf("Main Feature");
558 break;
559 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
560 printf("Main Begin Collection");
561 break;
562 case HID_MAIN_ITEM_TAG_END_COLLECTION:
563 printf("Main End Collection");
564 break;
565 default:
566 printf("Main reserved %d",item->tag);
567 break;
568 }
569 break;
570 case HID_ITEM_TYPE_GLOBAL:
571 switch(item->tag) {
572 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
573 printf("- Global Usage Page");
574 break;
575 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
576 printf("- Global Logical Minimum");
577 break;
578 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
579 printf("- Global Logical Maximum");
580 break;
581 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
582 printf("- Global physical Minimum");
583 break;
584 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
585 printf("- Global physical Maximum");
586 break;
587 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
588 printf("- Global Unit Exponent");
589 break;
590 case HID_GLOBAL_ITEM_TAG_UNIT:
591 printf("- Global Unit");
592 break;
593 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
594 printf("- Global Report Size");
595 break;
596 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
597 printf("- Global Report ID");
598 break;
599 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
600 printf("- Global Report Count");
601 break;
602 case HID_GLOBAL_ITEM_TAG_PUSH:
603 printf("- Global Push");
604 break;
605 case HID_GLOBAL_ITEM_TAG_POP:
606 printf("- Global Pop");
607 break;
608 default:
609 printf("- Global reserved %d",item->tag);
610 break;
611 }
612 break;
613 case HID_ITEM_TYPE_LOCAL:
614 switch(item->tag) {
615 case HID_LOCAL_ITEM_TAG_USAGE:
616 printf("-- Local Usage");
617 break;
618 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
619 printf("-- Local Usage Minimum");
620 break;
621 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
622 printf("-- Local Usage Maximum");
623 break;
624 case HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX:
625 printf("-- Local Designator Index");
626 break;
627 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM:
628 printf("-- Local Designator Minimum");
629 break;
630 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM:
631 printf("-- Local Designator Maximum");
632 break;
633 case HID_LOCAL_ITEM_TAG_STRING_INDEX:
634 printf("-- Local String Index");
635 break;
636 case HID_LOCAL_ITEM_TAG_STRING_MINIMUM:
637 printf("-- Local String Minimum");
638 break;
639 case HID_LOCAL_ITEM_TAG_STRING_MAXIMUM:
640 printf("-- Local String Maximum");
641 break;
642 case HID_LOCAL_ITEM_TAG_DELIMITER:
643 printf("-- Local Delimiter");
644 break;
645 default:
646 printf("-- Local reserved %d",item->tag);
647 break;
648 }
649 break;
650 default:
651 printf("--- reserved %d",item->type);
652 break;
653 }
654 switch(item->size) {
655 case 1:
656 printf(" %d",item->data.u8);
657 break;
658 case 2:
659 printf(" %d",item->data.u16);
660 break;
661 case 4:
662 printf(" %ld",item->data.u32);
663 break;
664 }
665 printf("\n");
666}
667
668
669
670static int usb_kbd_get_hid_desc(struct usb_device *dev)
671{
672 unsigned char buffer[256];
673 struct usb_descriptor_header *head;
674 struct usb_config_descriptor *config;
675 int index,len,i;
676 unsigned char *start, *end;
677 struct hid_item item;
678
679 if(usb_get_configuration_no(dev,&buffer[0],0)==-1)
680 return -1;
681 head =(struct usb_descriptor_header *)&buffer[0];
682 if(head->bDescriptorType!=USB_DT_CONFIG) {
683 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType);
684 return -1;
685 }
686 index=head->bLength;
687 config=(struct usb_config_descriptor *)&buffer[0];
688 len=swap_16(config->wTotalLength);
689 /* Ok the first entry must be a configuration entry, now process the others */
690 head=(struct usb_descriptor_header *)&buffer[index];
691 while(index+1 < len) {
692 if(head->bDescriptorType==USB_DT_HID) {
693 printf("HID desc found\n");
694 memcpy(&usb_kbd_hid_desc,&buffer[index],buffer[index]);
695 usb_kbd_hid_desc.bcdHID=swap_16(usb_kbd_hid_desc.bcdHID);
696 usb_kbd_hid_desc.wDescriptorLength=swap_16(usb_kbd_hid_desc.wDescriptorLength);
697 usb_kbd_display_hid(&usb_kbd_hid_desc);
698 len=0;
699 break;
700 }
701 index+=head->bLength;
702 head=(struct usb_descriptor_header *)&buffer[index];
703 }
704 if(len>0)
705 return -1;
706 len=usb_kbd_hid_desc.wDescriptorLength;
707 if((index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0], len)) < 0) {
708 printf("reading report descriptor failed\n");
709 return -1;
710 }
711 printf(" report descriptor (size %u, read %d)\n", len, index);
712 start=&buffer[0];
713 end=&buffer[len];
714 i=0;
715 do {
716 index=fetch_item(start,end,&item);
717 i+=index;
718 i++;
719 if(index>=0)
720 usb_kbd_show_item(&item);
721
722 start+=index;
723 start++;
724 } while(index>=0);
725
726}
727
728
729#endif
730
731#endif /* CONFIG_USB_KEYBOARD */
732
733/* eof */
734
"Das U-Boot" Source Tree