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