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 <stdio_dev.h>
29 #include <asm/byteorder.h>
30
31 #include <usb.h>
32
33 #undef USB_KBD_DEBUG
34 /*
35 * if overwrite_console returns 1, the stdin, stderr and stdout
36 * are switched to the serial port, else the settings in the
37 * environment are used
38 */
39 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
40 extern int overwrite_console (void);
41 #else
overwrite_console(void)42 int overwrite_console (void)
43 {
44 return (0);
45 }
46 #endif
47
48 #ifdef USB_KBD_DEBUG
49 #define USB_KBD_PRINTF(fmt,args...) printf (fmt ,##args)
50 #else
51 #define USB_KBD_PRINTF(fmt,args...)
52 #endif
53
54
55 #define REPEAT_RATE 40/4 /* 40msec -> 25cps */
56 #define REPEAT_DELAY 10 /* 10 x REAPEAT_RATE = 400msec */
57
58 #define NUM_LOCK 0x53
59 #define CAPS_LOCK 0x39
60 #define SCROLL_LOCK 0x47
61
62
63 /* Modifier bits */
64 #define LEFT_CNTR 0
65 #define LEFT_SHIFT 1
66 #define LEFT_ALT 2
67 #define LEFT_GUI 3
68 #define RIGHT_CNTR 4
69 #define RIGHT_SHIFT 5
70 #define RIGHT_ALT 6
71 #define RIGHT_GUI 7
72
73 #define USB_KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */
74
75 static volatile char usb_kbd_buffer[USB_KBD_BUFFER_LEN];
76 static volatile int usb_in_pointer = 0;
77 static volatile int usb_out_pointer = 0;
78
79 unsigned char new[8];
80 unsigned char old[8];
81 int repeat_delay;
82 #define DEVNAME "usbkbd"
83 static unsigned char num_lock = 0;
84 static unsigned char caps_lock = 0;
85 static unsigned char scroll_lock = 0;
86 static unsigned char ctrl = 0;
87
88 static unsigned char leds __attribute__ ((aligned (0x4)));
89
90 static unsigned char usb_kbd_numkey[] = {
91 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0','\r',0x1b,'\b','\t',' ', '-',
92 '=', '[', ']','\\', '#', ';', '\'', '`', ',', '.', '/'
93 };
94 static 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 */
usb_kbd_put_queue(char data)103 static 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 */
usb_kbd_testc(void)121 static int usb_kbd_testc(void)
122 {
123 #ifdef CONFIG_SYS_USB_EVENT_POLL
124 usb_event_poll();
125 #endif
126 if(usb_in_pointer==usb_out_pointer)
127 return(0); /* no data */
128 else
129 return(1);
130 }
131 /* gets the character from the queue */
usb_kbd_getc(void)132 static int usb_kbd_getc(void)
133 {
134 char c;
135 while(usb_in_pointer==usb_out_pointer) {
136 #ifdef CONFIG_SYS_USB_EVENT_POLL
137 usb_event_poll();
138 #endif
139 }
140 if((usb_out_pointer+1)==USB_KBD_BUFFER_LEN)
141 usb_out_pointer=0;
142 else
143 usb_out_pointer++;
144 c=usb_kbd_buffer[usb_out_pointer];
145 return (int)c;
146
147 }
148
149 /* forward decleration */
150 static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum);
151
152 /* search for keyboard and register it if found */
drv_usb_kbd_init(void)153 int drv_usb_kbd_init(void)
154 {
155 int error,i;
156 struct stdio_dev usb_kbd_dev,*old_dev;
157 struct usb_device *dev;
158 char *stdinname = getenv ("stdin");
159
160 usb_in_pointer=0;
161 usb_out_pointer=0;
162 /* scan all USB Devices */
163 for(i=0;i<USB_MAX_DEVICE;i++) {
164 dev=usb_get_dev_index(i); /* get device */
165 if(dev == NULL)
166 return -1;
167 if(dev->devnum!=-1) {
168 if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */
169 /* check, if it is already registered */
170 USB_KBD_PRINTF("USB KBD found set up device.\n");
171 old_dev = stdio_get_by_name(DEVNAME);
172 if(old_dev) {
173 /* ok, already registered, just return ok */
174 USB_KBD_PRINTF("USB KBD is already registered.\n");
175 return 1;
176 }
177 /* register the keyboard */
178 USB_KBD_PRINTF("USB KBD register.\n");
179 memset (&usb_kbd_dev, 0, sizeof(struct stdio_dev));
180 strcpy(usb_kbd_dev.name, DEVNAME);
181 usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
182 usb_kbd_dev.putc = NULL;
183 usb_kbd_dev.puts = NULL;
184 usb_kbd_dev.getc = usb_kbd_getc;
185 usb_kbd_dev.tstc = usb_kbd_testc;
186 usb_kbd_dev.priv = (void *)dev;
187 error = stdio_register (&usb_kbd_dev);
188 if(error==0) {
189 /* check if this is the standard input device */
190 if(strcmp(stdinname,DEVNAME)==0) {
191 /* reassign the console */
192 if(overwrite_console()) {
193 return 1;
194 }
195 error=console_assign(stdin,DEVNAME);
196 if(error==0)
197 return 1;
198 else
199 return error;
200 }
201 return 1;
202 }
203 return error;
204 }
205 }
206 }
207 /* no USB Keyboard found */
208 return -1;
209 }
210
211
212 /* deregistering the keyboard */
usb_kbd_deregister(void)213 int usb_kbd_deregister(void)
214 {
215 #ifdef CONFIG_SYS_STDIO_DEREGISTER
216 return stdio_deregister(DEVNAME);
217 #else
218 return 1;
219 #endif
220 }
221
222 /**************************************************************************
223 * Low Level drivers
224 */
225
226 /* set the LEDs. Since this is used in the irq routine, the control job
227 is issued with a timeout of 0. This means, that the job is queued without
228 waiting for job completion */
229
usb_kbd_setled(struct usb_device * dev)230 static void usb_kbd_setled(struct usb_device *dev)
231 {
232 struct usb_interface *iface;
233 iface = &dev->config.if_desc[0];
234 leds=0;
235 if(scroll_lock!=0)
236 leds|=1;
237 leds<<=1;
238 if(caps_lock!=0)
239 leds|=1;
240 leds<<=1;
241 if(num_lock!=0)
242 leds|=1;
243 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
244 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
245 0x200, iface->desc.bInterfaceNumber, (void *)&leds, 1, 0);
246
247 }
248
249
250 #define CAPITAL_MASK 0x20
251 /* Translate the scancode in ASCII */
usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed)252 static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed)
253 {
254 unsigned char keycode;
255
256 if(pressed==0) {
257 /* key released */
258 repeat_delay=0;
259 return 0;
260 }
261 if(pressed==2) {
262 repeat_delay++;
263 if(repeat_delay<REPEAT_DELAY)
264 return 0;
265 repeat_delay=REPEAT_DELAY;
266 }
267 keycode=0;
268 if((scancode>3) && (scancode<=0x1d)) { /* alpha numeric values */
269 keycode=scancode-4 + 0x61;
270 if(caps_lock)
271 keycode&=~CAPITAL_MASK; /* switch to capital Letters */
272 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) {
273 if(keycode & CAPITAL_MASK)
274 keycode&=~CAPITAL_MASK; /* switch to capital Letters */
275 else
276 keycode|=CAPITAL_MASK; /* switch to non capital Letters */
277 }
278 }
279 if((scancode>0x1d) && (scancode<0x3A)) {
280 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) /* shifted */
281 keycode=usb_kbd_numkey_shifted[scancode-0x1e];
282 else /* non shifted */
283 keycode=usb_kbd_numkey[scancode-0x1e];
284 }
285
286 if (ctrl)
287 keycode = scancode - 0x3;
288
289 if(pressed==1) {
290 #if defined(CONFIG_SAM4XX)
291 /* Menu system keycodes */
292 extern int console_changed;
293
294 switch(scancode)
295 {
296 case 41: usb_kbd_put_queue(5); return 0; // ESC
297 case 40: usb_kbd_put_queue(13); return 0; // ENTER
298 case 88: usb_kbd_put_queue(13); return 0; // NUMPAD ENTER
299
300 case 79: usb_kbd_put_queue(1); return 0; // CURSOR RIGHT
301 case 80: usb_kbd_put_queue(2); return 0; // CURSOR LEFT
302 case 81: usb_kbd_put_queue(3); return 0; // CURSOR DOWN
303 case 82: usb_kbd_put_queue(4); return 0; // CURSOR UP
304
305 case 75: usb_kbd_put_queue(4); return 0; // PG UP
306 case 78: usb_kbd_put_queue(3); return 0; // PG DOWN
307
308 case 69: // SHIFT + F12
309 if (modifier == 1)
310 {
311 setenv ("stdin", "usbkbd");
312 setenv ("stdout", "vga");
313 console_changed = 1;
314 }
315 return 0;
316 }
317 #endif
318 if(scancode==NUM_LOCK) {
319 num_lock=~num_lock;
320 return 1;
321 }
322 if(scancode==CAPS_LOCK) {
323 caps_lock=~caps_lock;
324 return 1;
325 }
326 if(scancode==SCROLL_LOCK) {
327 scroll_lock=~scroll_lock;
328 return 1;
329 }
330 }
331 if(keycode!=0) {
332 USB_KBD_PRINTF("%c",keycode);
333 usb_kbd_put_queue(keycode);
334 }
335 return 0;
336 }
337
338 /* Interrupt service routine */
usb_kbd_irq(struct usb_device * dev)339 static int usb_kbd_irq(struct usb_device *dev)
340 {
341 int i,res;
342
343 if((dev->irq_status!=0)||(dev->irq_act_len!=8))
344 {
345 USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len);
346 return 1;
347 }
348 res=0;
349
350 switch (new[0]) {
351 case 0x0: /* No combo key pressed */
352 ctrl = 0;
353 break;
354 case 0x01: /* Left Ctrl pressed */
355 case 0x10: /* Right Ctrl pressed */
356 ctrl = 1;
357 break;
358 }
359
360 for (i = 2; i < 8; i++) {
361 if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) {
362 res|=usb_kbd_translate(old[i],new[0],0);
363 }
364 if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) {
365 res|=usb_kbd_translate(new[i],new[0],1);
366 }
367 }
368 if((new[2]>3) && (old[2]==new[2])) /* still pressed */
369 res|=usb_kbd_translate(new[2],new[0],2);
370 if(res==1)
371 usb_kbd_setled(dev);
372 memcpy(&old[0],&new[0], 8);
373 return 1; /* install IRQ Handler again */
374 }
375
376 /* probes the USB device dev for keyboard type */
usb_kbd_probe(struct usb_device * dev,unsigned int ifnum)377 static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
378 {
379 struct usb_interface *iface;
380 struct usb_endpoint_descriptor *ep;
381 int pipe,maxp;
382
383 if (dev->descriptor.bNumConfigurations != 1) return 0;
384 iface = &dev->config.if_desc[ifnum];
385
386 if (iface->desc.bInterfaceClass != 3)
387 return 0;
388 if (iface->desc.bInterfaceSubClass != 1)
389 return 0;
390 if (iface->desc.bInterfaceProtocol != 1)
391 return 0;
392 if (iface->desc.bNumEndpoints != 1)
393 return 0;
394
395 ep = &iface->ep_desc[0];
396
397 if (!(ep->bEndpointAddress & 0x80)) return 0;
398 if ((ep->bmAttributes & 3) != 3) return 0;
399 USB_KBD_PRINTF("USB KBD found set protocol...\n");
400 /* ok, we found a USB Keyboard, install it */
401 /* usb_kbd_get_hid_desc(dev); */
402 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
403 USB_KBD_PRINTF("USB KBD found set idle...\n");
404 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0);
405 memset(&new[0], 0, 8);
406 memset(&old[0], 0, 8);
407 repeat_delay=0;
408 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
409 maxp = usb_maxpacket(dev, pipe);
410 dev->irq_handle=usb_kbd_irq;
411 USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n");
412 usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval);
413 return 1;
414 }
415
416
417 #if 0
418 struct usb_hid_descriptor {
419 unsigned char bLength;
420 unsigned char bDescriptorType; /* 0x21 for HID */
421 unsigned short bcdHID; /* release number */
422 unsigned char bCountryCode;
423 unsigned char bNumDescriptors;
424 unsigned char bReportDescriptorType;
425 unsigned short wDescriptorLength;
426 } __attribute__ ((packed));
427
428 /*
429 * We parse each description item into this structure. Short items data
430 * values are expanded to 32-bit signed int, long items contain a pointer
431 * into the data area.
432 */
433
434 struct hid_item {
435 unsigned char format;
436 unsigned char size;
437 unsigned char type;
438 unsigned char tag;
439 union {
440 unsigned char u8;
441 char s8;
442 unsigned short u16;
443 short s16;
444 unsigned long u32;
445 long s32;
446 unsigned char *longdata;
447 } data;
448 };
449
450 /*
451 * HID report item format
452 */
453
454 #define HID_ITEM_FORMAT_SHORT 0
455 #define HID_ITEM_FORMAT_LONG 1
456
457 /*
458 * Special tag indicating long items
459 */
460
461 #define HID_ITEM_TAG_LONG 15
462
463
464 static struct usb_hid_descriptor usb_kbd_hid_desc;
465
466 void usb_kbd_display_hid(struct usb_hid_descriptor *hid)
467 {
468 printf("USB_HID_DESC:\n");
469 printf(" bLenght 0x%x\n",hid->bLength);
470 printf(" bcdHID 0x%x\n",hid->bcdHID);
471 printf(" bCountryCode %d\n",hid->bCountryCode);
472 printf(" bNumDescriptors 0x%x\n",hid->bNumDescriptors);
473 printf(" bReportDescriptorType 0x%x\n",hid->bReportDescriptorType);
474 printf(" wDescriptorLength 0x%x\n",hid->wDescriptorLength);
475 }
476
477
478 /*
479 * Fetch a report description item from the data stream. We support long
480 * items, though they are not used yet.
481 */
482
483 static int fetch_item(unsigned char *start,unsigned char *end, struct hid_item *item)
484 {
485 if((end - start) > 0) {
486 unsigned char b = *start++;
487 item->type = (b >> 2) & 3;
488 item->tag = (b >> 4) & 15;
489 if (item->tag == HID_ITEM_TAG_LONG) {
490 item->format = HID_ITEM_FORMAT_LONG;
491 if ((end - start) >= 2) {
492 item->size = *start++;
493 item->tag = *start++;
494 if ((end - start) >= item->size) {
495 item->data.longdata = start;
496 start += item->size;
497 return item->size;
498 }
499 }
500 } else {
501 item->format = HID_ITEM_FORMAT_SHORT;
502 item->size = b & 3;
503 switch (item->size) {
504 case 0:
505 return item->size;
506 case 1:
507 if ((end - start) >= 1) {
508 item->data.u8 = *start++;
509 return item->size;
510 }
511 break;
512 case 2:
513 if ((end - start) >= 2) {
514 item->data.u16 = le16_to_cpu((unsigned short *)start);
515 start+=2;
516 return item->size;
517 }
518 case 3:
519 item->size++;
520 if ((end - start) >= 4) {
521 item->data.u32 = le32_to_cpu((unsigned long *)start);
522 start+=4;
523 return item->size;
524 }
525 }
526 }
527 }
528 return -1;
529 }
530
531 /*
532 * HID report descriptor item type (prefix bit 2,3)
533 */
534
535 #define HID_ITEM_TYPE_MAIN 0
536 #define HID_ITEM_TYPE_GLOBAL 1
537 #define HID_ITEM_TYPE_LOCAL 2
538 #define HID_ITEM_TYPE_RESERVED 3
539 /*
540 * HID report descriptor main item tags
541 */
542
543 #define HID_MAIN_ITEM_TAG_INPUT 8
544 #define HID_MAIN_ITEM_TAG_OUTPUT 9
545 #define HID_MAIN_ITEM_TAG_FEATURE 11
546 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
547 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12
548 /*
549 * HID report descriptor main item contents
550 */
551
552 #define HID_MAIN_ITEM_CONSTANT 0x001
553 #define HID_MAIN_ITEM_VARIABLE 0x002
554 #define HID_MAIN_ITEM_RELATIVE 0x004
555 #define HID_MAIN_ITEM_WRAP 0x008
556 #define HID_MAIN_ITEM_NONLINEAR 0x010
557 #define HID_MAIN_ITEM_NO_PREFERRED 0x020
558 #define HID_MAIN_ITEM_NULL_STATE 0x040
559 #define HID_MAIN_ITEM_VOLATILE 0x080
560 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
561
562 /*
563 * HID report descriptor collection item types
564 */
565
566 #define HID_COLLECTION_PHYSICAL 0
567 #define HID_COLLECTION_APPLICATION 1
568 #define HID_COLLECTION_LOGICAL 2
569 /*
570 * HID report descriptor global item tags
571 */
572
573 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
574 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
575 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
576 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
577 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
578 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
579 #define HID_GLOBAL_ITEM_TAG_UNIT 6
580 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
581 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
582 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
583 #define HID_GLOBAL_ITEM_TAG_PUSH 10
584 #define HID_GLOBAL_ITEM_TAG_POP 11
585
586 /*
587 * HID report descriptor local item tags
588 */
589
590 #define HID_LOCAL_ITEM_TAG_USAGE 0
591 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
592 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
593 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
594 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
595 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
596 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
597 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
598 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
599 #define HID_LOCAL_ITEM_TAG_DELIMITER 10
600
601
602 static void usb_kbd_show_item(struct hid_item *item)
603 {
604 switch(item->type) {
605 case HID_ITEM_TYPE_MAIN:
606 switch(item->tag) {
607 case HID_MAIN_ITEM_TAG_INPUT:
608 printf("Main Input");
609 break;
610 case HID_MAIN_ITEM_TAG_OUTPUT:
611 printf("Main Output");
612 break;
613 case HID_MAIN_ITEM_TAG_FEATURE:
614 printf("Main Feature");
615 break;
616 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
617 printf("Main Begin Collection");
618 break;
619 case HID_MAIN_ITEM_TAG_END_COLLECTION:
620 printf("Main End Collection");
621 break;
622 default:
623 printf("Main reserved %d",item->tag);
624 break;
625 }
626 break;
627 case HID_ITEM_TYPE_GLOBAL:
628 switch(item->tag) {
629 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
630 printf("- Global Usage Page");
631 break;
632 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
633 printf("- Global Logical Minimum");
634 break;
635 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
636 printf("- Global Logical Maximum");
637 break;
638 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
639 printf("- Global physical Minimum");
640 break;
641 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
642 printf("- Global physical Maximum");
643 break;
644 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
645 printf("- Global Unit Exponent");
646 break;
647 case HID_GLOBAL_ITEM_TAG_UNIT:
648 printf("- Global Unit");
649 break;
650 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
651 printf("- Global Report Size");
652 break;
653 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
654 printf("- Global Report ID");
655 break;
656 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
657 printf("- Global Report Count");
658 break;
659 case HID_GLOBAL_ITEM_TAG_PUSH:
660 printf("- Global Push");
661 break;
662 case HID_GLOBAL_ITEM_TAG_POP:
663 printf("- Global Pop");
664 break;
665 default:
666 printf("- Global reserved %d",item->tag);
667 break;
668 }
669 break;
670 case HID_ITEM_TYPE_LOCAL:
671 switch(item->tag) {
672 case HID_LOCAL_ITEM_TAG_USAGE:
673 printf("-- Local Usage");
674 break;
675 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
676 printf("-- Local Usage Minimum");
677 break;
678 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
679 printf("-- Local Usage Maximum");
680 break;
681 case HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX:
682 printf("-- Local Designator Index");
683 break;
684 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM:
685 printf("-- Local Designator Minimum");
686 break;
687 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM:
688 printf("-- Local Designator Maximum");
689 break;
690 case HID_LOCAL_ITEM_TAG_STRING_INDEX:
691 printf("-- Local String Index");
692 break;
693 case HID_LOCAL_ITEM_TAG_STRING_MINIMUM:
694 printf("-- Local String Minimum");
695 break;
696 case HID_LOCAL_ITEM_TAG_STRING_MAXIMUM:
697 printf("-- Local String Maximum");
698 break;
699 case HID_LOCAL_ITEM_TAG_DELIMITER:
700 printf("-- Local Delimiter");
701 break;
702 default:
703 printf("-- Local reserved %d",item->tag);
704 break;
705 }
706 break;
707 default:
708 printf("--- reserved %d",item->type);
709 break;
710 }
711 switch(item->size) {
712 case 1:
713 printf(" %d",item->data.u8);
714 break;
715 case 2:
716 printf(" %d",item->data.u16);
717 break;
718 case 4:
719 printf(" %ld",item->data.u32);
720 break;
721 }
722 printf("\n");
723 }
724
725
726 static int usb_kbd_get_hid_desc(struct usb_device *dev)
727 {
728 unsigned char buffer[256];
729 struct usb_descriptor_header *head;
730 struct usb_config_descriptor *config;
731 int index,len,i;
732 unsigned char *start, *end;
733 struct hid_item item;
734
735 if(usb_get_configuration_no(dev,&buffer[0],0)==-1)
736 return -1;
737 head =(struct usb_descriptor_header *)&buffer[0];
738 if(head->bDescriptorType!=USB_DT_CONFIG) {
739 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType);
740 return -1;
741 }
742 index=head->bLength;
743 config=(struct usb_config_descriptor *)&buffer[0];
744 len=le16_to_cpu(config->wTotalLength);
745 /* Ok the first entry must be a configuration entry, now process the others */
746 head=(struct usb_descriptor_header *)&buffer[index];
747 while(index+1 < len) {
748 if(head->bDescriptorType==USB_DT_HID) {
749 printf("HID desc found\n");
750 memcpy(&usb_kbd_hid_desc,&buffer[index],buffer[index]);
751 le16_to_cpus(&usb_kbd_hid_desc.bcdHID);
752 le16_to_cpus(&usb_kbd_hid_desc.wDescriptorLength);
753 usb_kbd_display_hid(&usb_kbd_hid_desc);
754 len=0;
755 break;
756 }
757 index+=head->bLength;
758 head=(struct usb_descriptor_header *)&buffer[index];
759 }
760 if(len>0)
761 return -1;
762 len=usb_kbd_hid_desc.wDescriptorLength;
763 if((index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0], len)) < 0) {
764 printf("reading report descriptor failed\n");
765 return -1;
766 }
767 printf(" report descriptor (size %u, read %d)\n", len, index);
768 start = &buffer[0];
769 end = &buffer[len];
770 i=0;
771 do {
772 index=fetch_item(start,end,&item);
773 i+=index;
774 i++;
775 if(index>=0)
776 usb_kbd_show_item(&item);
777
778 start+=index;
779 start++;
780 } while(index>=0);
781
782 }
783
784 #endif
785