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 #ifdef CONFIG_USB_KEYBOARD 32 33 #include <usb.h> 34 35 #undef USB_KBD_DEBUG 36 /* 37 * if overwrite_console returns 1, the stdin, stderr and stdout 38 * are switched to the serial port, else the settings in the 39 * environment are used 40 */ 41 #ifdef CFG_CONSOLE_OVERWRITE_ROUTINE 42 extern int overwrite_console (void); 43 #else 44 int overwrite_console (void) 45 { 46 return (0); 47 } 48 #endif 49 50 #ifdef USB_KBD_DEBUG 51 #define USB_KBD_PRINTF(fmt,args...) printf (fmt ,##args) 52 #else 53 #define USB_KBD_PRINTF(fmt,args...) 54 #endif 55 56 57 #define REPEAT_RATE 40/4 /* 40msec -> 25cps */ 58 #define REPEAT_DELAY 10 /* 10 x REAPEAT_RATE = 400msec */ 59 60 #define NUM_LOCK 0x53 61 #define CAPS_LOCK 0x39 62 #define SCROLL_LOCK 0x47 63 64 65 /* Modifier bits */ 66 #define LEFT_CNTR 0 67 #define LEFT_SHIFT 1 68 #define LEFT_ALT 2 69 #define LEFT_GUI 3 70 #define RIGHT_CNTR 4 71 #define RIGHT_SHIFT 5 72 #define RIGHT_ALT 6 73 #define RIGHT_GUI 7 74 75 #define USB_KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */ 76 77 static volatile char usb_kbd_buffer[USB_KBD_BUFFER_LEN]; 78 static volatile int usb_in_pointer = 0; 79 static volatile int usb_out_pointer = 0; 80 81 unsigned char new[8]; 82 unsigned char old[8]; 83 int repeat_delay; 84 #define DEVNAME "usbkbd" 85 static unsigned char num_lock = 0; 86 static unsigned char caps_lock = 0; 87 static unsigned char scroll_lock = 0; 88 static unsigned char ctrl = 0; 89 90 static unsigned char leds __attribute__ ((aligned (0x4))); 91 92 static unsigned char usb_kbd_numkey[] = { 93 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0','\r',0x1b,'\b','\t',' ', '-', 94 '=', '[', ']','\\', '#', ';', '\'', '`', ',', '.', '/' 95 }; 96 static unsigned char usb_kbd_numkey_shifted[] = { 97 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')','\r',0x1b,'\b','\t',' ', '_', 98 '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?' 99 }; 100 101 /****************************************************************** 102 * Queue handling 103 ******************************************************************/ 104 /* puts character in the queue and sets up the in and out pointer */ 105 static void usb_kbd_put_queue(char data) 106 { 107 if((usb_in_pointer+1)==USB_KBD_BUFFER_LEN) { 108 if(usb_out_pointer==0) { 109 return; /* buffer full */ 110 } else{ 111 usb_in_pointer=0; 112 } 113 } else { 114 if((usb_in_pointer+1)==usb_out_pointer) 115 return; /* buffer full */ 116 usb_in_pointer++; 117 } 118 usb_kbd_buffer[usb_in_pointer]=data; 119 return; 120 } 121 122 /* test if a character is in the queue */ 123 static int usb_kbd_testc(void) 124 { 125 #ifdef CFG_USB_EVENT_POLL 126 usb_event_poll(); 127 #endif 128 if(usb_in_pointer==usb_out_pointer) 129 return(0); /* no data */ 130 else 131 return(1); 132 } 133 /* gets the character from the queue */ 134 static int usb_kbd_getc(void) 135 { 136 char c; 137 while(usb_in_pointer==usb_out_pointer) { 138 #ifdef CFG_USB_EVENT_POLL 139 usb_event_poll(); 140 #endif 141 } 142 if((usb_out_pointer+1)==USB_KBD_BUFFER_LEN) 143 usb_out_pointer=0; 144 else 145 usb_out_pointer++; 146 c=usb_kbd_buffer[usb_out_pointer]; 147 return (int)c; 148 149 } 150 151 /* forward decleration */ 152 static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum); 153 154 /* search for keyboard and register it if found */ 155 int drv_usb_kbd_init(void) 156 { 157 int error,i,index; 158 device_t usb_kbd_dev,*old_dev; 159 struct usb_device *dev; 160 char *stdinname = getenv ("stdin"); 161 162 usb_in_pointer=0; 163 usb_out_pointer=0; 164 /* scan all USB Devices */ 165 for(i=0;i<USB_MAX_DEVICE;i++) { 166 dev=usb_get_dev_index(i); /* get device */ 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 for (index=1; index<=ListNumItems(devlist); index++) { 172 old_dev = ListGetPtrToItem(devlist, index); 173 if(strcmp(old_dev->name,DEVNAME)==0) { 174 /* ok, already registered, just return ok */ 175 USB_KBD_PRINTF("USB KBD is already registered.\n"); 176 return 1; 177 } 178 } 179 /* register the keyboard */ 180 USB_KBD_PRINTF("USB KBD register.\n"); 181 memset (&usb_kbd_dev, 0, sizeof(device_t)); 182 strcpy(usb_kbd_dev.name, DEVNAME); 183 usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; 184 usb_kbd_dev.putc = NULL; 185 usb_kbd_dev.puts = NULL; 186 usb_kbd_dev.getc = usb_kbd_getc; 187 usb_kbd_dev.tstc = usb_kbd_testc; 188 error = device_register (&usb_kbd_dev); 189 if(error==0) { 190 /* check if this is the standard input device */ 191 if(strcmp(stdinname,DEVNAME)==0) { 192 /* reassign the console */ 193 if(overwrite_console()) { 194 return 1; 195 } 196 error=console_assign(stdin,DEVNAME); 197 if(error==0) 198 return 1; 199 else 200 return error; 201 } 202 return 1; 203 } 204 return error; 205 } 206 } 207 } 208 /* no USB Keyboard found */ 209 return -1; 210 } 211 212 213 /* deregistering the keyboard */ 214 int usb_kbd_deregister(void) 215 { 216 return device_deregister(DEVNAME); 217 } 218 219 /************************************************************************** 220 * Low Level drivers 221 */ 222 223 /* set the LEDs. Since this is used in the irq routine, the control job 224 is issued with a timeout of 0. This means, that the job is queued without 225 waiting for job completion */ 226 227 static void usb_kbd_setled(struct usb_device *dev) 228 { 229 struct usb_interface_descriptor *iface; 230 iface = &dev->config.if_desc[0]; 231 leds=0; 232 if(scroll_lock!=0) 233 leds|=1; 234 leds<<=1; 235 if(caps_lock!=0) 236 leds|=1; 237 leds<<=1; 238 if(num_lock!=0) 239 leds|=1; 240 usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 241 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 242 0x200, iface->bInterfaceNumber,(void *)&leds, 1, 0); 243 244 } 245 246 247 #define CAPITAL_MASK 0x20 248 /* Translate the scancode in ASCII */ 249 static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed) 250 { 251 unsigned char keycode; 252 253 if(pressed==0) { 254 /* key released */ 255 repeat_delay=0; 256 return 0; 257 } 258 if(pressed==2) { 259 repeat_delay++; 260 if(repeat_delay<REPEAT_DELAY) 261 return 0; 262 repeat_delay=REPEAT_DELAY; 263 } 264 keycode=0; 265 if((scancode>3) && (scancode<=0x1d)) { /* alpha numeric values */ 266 keycode=scancode-4 + 0x61; 267 if(caps_lock) 268 keycode&=~CAPITAL_MASK; /* switch to capital Letters */ 269 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) { 270 if(keycode & CAPITAL_MASK) 271 keycode&=~CAPITAL_MASK; /* switch to capital Letters */ 272 else 273 keycode|=CAPITAL_MASK; /* switch to non capital Letters */ 274 } 275 } 276 if((scancode>0x1d) && (scancode<0x3A)) { 277 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) /* shifted */ 278 keycode=usb_kbd_numkey_shifted[scancode-0x1e]; 279 else /* non shifted */ 280 keycode=usb_kbd_numkey[scancode-0x1e]; 281 } 282 283 if (ctrl) 284 keycode = scancode - 0x3; 285 286 if(pressed==1) { 287 if(scancode==NUM_LOCK) { 288 num_lock=~num_lock; 289 return 1; 290 } 291 if(scancode==CAPS_LOCK) { 292 caps_lock=~caps_lock; 293 return 1; 294 } 295 if(scancode==SCROLL_LOCK) { 296 scroll_lock=~scroll_lock; 297 return 1; 298 } 299 } 300 if(keycode!=0) { 301 USB_KBD_PRINTF("%c",keycode); 302 usb_kbd_put_queue(keycode); 303 } 304 return 0; 305 } 306 307 /* Interrupt service routine */ 308 static int usb_kbd_irq(struct usb_device *dev) 309 { 310 int i,res; 311 312 if((dev->irq_status!=0)||(dev->irq_act_len!=8)) 313 { 314 USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len); 315 return 1; 316 } 317 res=0; 318 319 switch (new[0]) { 320 case 0x0: /* No combo key pressed */ 321 ctrl = 0; 322 break; 323 case 0x01: /* Left Ctrl pressed */ 324 case 0x10: /* Right Ctrl pressed */ 325 ctrl = 1; 326 break; 327 } 328 329 for (i = 2; i < 8; i++) { 330 if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) { 331 res|=usb_kbd_translate(old[i],new[0],0); 332 } 333 if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) { 334 res|=usb_kbd_translate(new[i],new[0],1); 335 } 336 } 337 if((new[2]>3) && (old[2]==new[2])) /* still pressed */ 338 res|=usb_kbd_translate(new[2],new[0],2); 339 if(res==1) 340 usb_kbd_setled(dev); 341 memcpy(&old[0],&new[0], 8); 342 return 1; /* install IRQ Handler again */ 343 } 344 345 /* probes the USB device dev for keyboard type */ 346 static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) 347 { 348 struct usb_interface_descriptor *iface; 349 struct usb_endpoint_descriptor *ep; 350 int pipe,maxp; 351 352 if (dev->descriptor.bNumConfigurations != 1) return 0; 353 iface = &dev->config.if_desc[ifnum]; 354 355 if (iface->bInterfaceClass != 3) return 0; 356 if (iface->bInterfaceSubClass != 1) return 0; 357 if (iface->bInterfaceProtocol != 1) return 0; 358 if (iface->bNumEndpoints != 1) return 0; 359 360 ep = &iface->ep_desc[0]; 361 362 if (!(ep->bEndpointAddress & 0x80)) return 0; 363 if ((ep->bmAttributes & 3) != 3) return 0; 364 USB_KBD_PRINTF("USB KBD found set protocol...\n"); 365 /* ok, we found a USB Keyboard, install it */ 366 /* usb_kbd_get_hid_desc(dev); */ 367 usb_set_protocol(dev, iface->bInterfaceNumber, 0); 368 USB_KBD_PRINTF("USB KBD found set idle...\n"); 369 usb_set_idle(dev, iface->bInterfaceNumber, REPEAT_RATE, 0); 370 memset(&new[0], 0, 8); 371 memset(&old[0], 0, 8); 372 repeat_delay=0; 373 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); 374 maxp = usb_maxpacket(dev, pipe); 375 dev->irq_handle=usb_kbd_irq; 376 USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n"); 377 usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval); 378 return 1; 379 } 380 381 382 #if 0 383 struct usb_hid_descriptor { 384 unsigned char bLength; 385 unsigned char bDescriptorType; /* 0x21 for HID */ 386 unsigned short bcdHID; /* release number */ 387 unsigned char bCountryCode; 388 unsigned char bNumDescriptors; 389 unsigned char bReportDescriptorType; 390 unsigned short wDescriptorLength; 391 } __attribute__ ((packed)); 392 393 /* 394 * We parse each description item into this structure. Short items data 395 * values are expanded to 32-bit signed int, long items contain a pointer 396 * into the data area. 397 */ 398 399 struct hid_item { 400 unsigned char format; 401 unsigned char size; 402 unsigned char type; 403 unsigned char tag; 404 union { 405 unsigned char u8; 406 char s8; 407 unsigned short u16; 408 short s16; 409 unsigned long u32; 410 long s32; 411 unsigned char *longdata; 412 } data; 413 }; 414 415 /* 416 * HID report item format 417 */ 418 419 #define HID_ITEM_FORMAT_SHORT 0 420 #define HID_ITEM_FORMAT_LONG 1 421 422 /* 423 * Special tag indicating long items 424 */ 425 426 #define HID_ITEM_TAG_LONG 15 427 428 429 static struct usb_hid_descriptor usb_kbd_hid_desc; 430 431 void usb_kbd_display_hid(struct usb_hid_descriptor *hid) 432 { 433 printf("USB_HID_DESC:\n"); 434 printf(" bLenght 0x%x\n",hid->bLength); 435 printf(" bcdHID 0x%x\n",hid->bcdHID); 436 printf(" bCountryCode %d\n",hid->bCountryCode); 437 printf(" bNumDescriptors 0x%x\n",hid->bNumDescriptors); 438 printf(" bReportDescriptorType 0x%x\n",hid->bReportDescriptorType); 439 printf(" wDescriptorLength 0x%x\n",hid->wDescriptorLength); 440 } 441 442 443 /* 444 * Fetch a report description item from the data stream. We support long 445 * items, though they are not used yet. 446 */ 447 448 static int fetch_item(unsigned char *start,unsigned char *end, struct hid_item *item) 449 { 450 if((end - start) > 0) { 451 unsigned char b = *start++; 452 item->type = (b >> 2) & 3; 453 item->tag = (b >> 4) & 15; 454 if (item->tag == HID_ITEM_TAG_LONG) { 455 item->format = HID_ITEM_FORMAT_LONG; 456 if ((end - start) >= 2) { 457 item->size = *start++; 458 item->tag = *start++; 459 if ((end - start) >= item->size) { 460 item->data.longdata = start; 461 start += item->size; 462 return item->size; 463 } 464 } 465 } else { 466 item->format = HID_ITEM_FORMAT_SHORT; 467 item->size = b & 3; 468 switch (item->size) { 469 case 0: 470 return item->size; 471 case 1: 472 if ((end - start) >= 1) { 473 item->data.u8 = *start++; 474 return item->size; 475 } 476 break; 477 case 2: 478 if ((end - start) >= 2) { 479 item->data.u16 = le16_to_cpu((unsigned short *)start); 480 start+=2; 481 return item->size; 482 } 483 case 3: 484 item->size++; 485 if ((end - start) >= 4) { 486 item->data.u32 = le32_to_cpu((unsigned long *)start); 487 start+=4; 488 return item->size; 489 } 490 } 491 } 492 } 493 return -1; 494 } 495 496 /* 497 * HID report descriptor item type (prefix bit 2,3) 498 */ 499 500 #define HID_ITEM_TYPE_MAIN 0 501 #define HID_ITEM_TYPE_GLOBAL 1 502 #define HID_ITEM_TYPE_LOCAL 2 503 #define HID_ITEM_TYPE_RESERVED 3 504 /* 505 * HID report descriptor main item tags 506 */ 507 508 #define HID_MAIN_ITEM_TAG_INPUT 8 509 #define HID_MAIN_ITEM_TAG_OUTPUT 9 510 #define HID_MAIN_ITEM_TAG_FEATURE 11 511 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 512 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 513 /* 514 * HID report descriptor main item contents 515 */ 516 517 #define HID_MAIN_ITEM_CONSTANT 0x001 518 #define HID_MAIN_ITEM_VARIABLE 0x002 519 #define HID_MAIN_ITEM_RELATIVE 0x004 520 #define HID_MAIN_ITEM_WRAP 0x008 521 #define HID_MAIN_ITEM_NONLINEAR 0x010 522 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 523 #define HID_MAIN_ITEM_NULL_STATE 0x040 524 #define HID_MAIN_ITEM_VOLATILE 0x080 525 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 526 527 /* 528 * HID report descriptor collection item types 529 */ 530 531 #define HID_COLLECTION_PHYSICAL 0 532 #define HID_COLLECTION_APPLICATION 1 533 #define HID_COLLECTION_LOGICAL 2 534 /* 535 * HID report descriptor global item tags 536 */ 537 538 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 539 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 540 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 541 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 542 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 543 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 544 #define HID_GLOBAL_ITEM_TAG_UNIT 6 545 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 546 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 547 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 548 #define HID_GLOBAL_ITEM_TAG_PUSH 10 549 #define HID_GLOBAL_ITEM_TAG_POP 11 550 551 /* 552 * HID report descriptor local item tags 553 */ 554 555 #define HID_LOCAL_ITEM_TAG_USAGE 0 556 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 557 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 558 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 559 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 560 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 561 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 562 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 563 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 564 #define HID_LOCAL_ITEM_TAG_DELIMITER 10 565 566 567 static void usb_kbd_show_item(struct hid_item *item) 568 { 569 switch(item->type) { 570 case HID_ITEM_TYPE_MAIN: 571 switch(item->tag) { 572 case HID_MAIN_ITEM_TAG_INPUT: 573 printf("Main Input"); 574 break; 575 case HID_MAIN_ITEM_TAG_OUTPUT: 576 printf("Main Output"); 577 break; 578 case HID_MAIN_ITEM_TAG_FEATURE: 579 printf("Main Feature"); 580 break; 581 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION: 582 printf("Main Begin Collection"); 583 break; 584 case HID_MAIN_ITEM_TAG_END_COLLECTION: 585 printf("Main End Collection"); 586 break; 587 default: 588 printf("Main reserved %d",item->tag); 589 break; 590 } 591 break; 592 case HID_ITEM_TYPE_GLOBAL: 593 switch(item->tag) { 594 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: 595 printf("- Global Usage Page"); 596 break; 597 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: 598 printf("- Global Logical Minimum"); 599 break; 600 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: 601 printf("- Global Logical Maximum"); 602 break; 603 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: 604 printf("- Global physical Minimum"); 605 break; 606 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: 607 printf("- Global physical Maximum"); 608 break; 609 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: 610 printf("- Global Unit Exponent"); 611 break; 612 case HID_GLOBAL_ITEM_TAG_UNIT: 613 printf("- Global Unit"); 614 break; 615 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: 616 printf("- Global Report Size"); 617 break; 618 case HID_GLOBAL_ITEM_TAG_REPORT_ID: 619 printf("- Global Report ID"); 620 break; 621 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: 622 printf("- Global Report Count"); 623 break; 624 case HID_GLOBAL_ITEM_TAG_PUSH: 625 printf("- Global Push"); 626 break; 627 case HID_GLOBAL_ITEM_TAG_POP: 628 printf("- Global Pop"); 629 break; 630 default: 631 printf("- Global reserved %d",item->tag); 632 break; 633 } 634 break; 635 case HID_ITEM_TYPE_LOCAL: 636 switch(item->tag) { 637 case HID_LOCAL_ITEM_TAG_USAGE: 638 printf("-- Local Usage"); 639 break; 640 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM: 641 printf("-- Local Usage Minimum"); 642 break; 643 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM: 644 printf("-- Local Usage Maximum"); 645 break; 646 case HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX: 647 printf("-- Local Designator Index"); 648 break; 649 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM: 650 printf("-- Local Designator Minimum"); 651 break; 652 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM: 653 printf("-- Local Designator Maximum"); 654 break; 655 case HID_LOCAL_ITEM_TAG_STRING_INDEX: 656 printf("-- Local String Index"); 657 break; 658 case HID_LOCAL_ITEM_TAG_STRING_MINIMUM: 659 printf("-- Local String Minimum"); 660 break; 661 case HID_LOCAL_ITEM_TAG_STRING_MAXIMUM: 662 printf("-- Local String Maximum"); 663 break; 664 case HID_LOCAL_ITEM_TAG_DELIMITER: 665 printf("-- Local Delimiter"); 666 break; 667 default: 668 printf("-- Local reserved %d",item->tag); 669 break; 670 } 671 break; 672 default: 673 printf("--- reserved %d",item->type); 674 break; 675 } 676 switch(item->size) { 677 case 1: 678 printf(" %d",item->data.u8); 679 break; 680 case 2: 681 printf(" %d",item->data.u16); 682 break; 683 case 4: 684 printf(" %ld",item->data.u32); 685 break; 686 } 687 printf("\n"); 688 } 689 690 691 static int usb_kbd_get_hid_desc(struct usb_device *dev) 692 { 693 unsigned char buffer[256]; 694 struct usb_descriptor_header *head; 695 struct usb_config_descriptor *config; 696 int index,len,i; 697 unsigned char *start, *end; 698 struct hid_item item; 699 700 if(usb_get_configuration_no(dev,&buffer[0],0)==-1) 701 return -1; 702 head =(struct usb_descriptor_header *)&buffer[0]; 703 if(head->bDescriptorType!=USB_DT_CONFIG) { 704 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType); 705 return -1; 706 } 707 index=head->bLength; 708 config=(struct usb_config_descriptor *)&buffer[0]; 709 len=le16_to_cpu(config->wTotalLength); 710 /* Ok the first entry must be a configuration entry, now process the others */ 711 head=(struct usb_descriptor_header *)&buffer[index]; 712 while(index+1 < len) { 713 if(head->bDescriptorType==USB_DT_HID) { 714 printf("HID desc found\n"); 715 memcpy(&usb_kbd_hid_desc,&buffer[index],buffer[index]); 716 le16_to_cpus(&usb_kbd_hid_desc.bcdHID); 717 le16_to_cpus(&usb_kbd_hid_desc.wDescriptorLength); 718 usb_kbd_display_hid(&usb_kbd_hid_desc); 719 len=0; 720 break; 721 } 722 index+=head->bLength; 723 head=(struct usb_descriptor_header *)&buffer[index]; 724 } 725 if(len>0) 726 return -1; 727 len=usb_kbd_hid_desc.wDescriptorLength; 728 if((index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0], len)) < 0) { 729 printf("reading report descriptor failed\n"); 730 return -1; 731 } 732 printf(" report descriptor (size %u, read %d)\n", len, index); 733 start=&buffer[0]; 734 end=&buffer[len]; 735 i=0; 736 do { 737 index=fetch_item(start,end,&item); 738 i+=index; 739 i++; 740 if(index>=0) 741 usb_kbd_show_item(&item); 742 743 start+=index; 744 start++; 745 } while(index>=0); 746 747 } 748 749 750 #endif 751 752 #endif /* CONFIG_USB_KEYBOARD */ 753