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 CONFIG_SYS_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 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 */ 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 */ 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 == 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 = device_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(device_t)); 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 error = device_register (&usb_kbd_dev); 187 if(error==0) { 188 /* check if this is the standard input device */ 189 if(strcmp(stdinname,DEVNAME)==0) { 190 /* reassign the console */ 191 if(overwrite_console()) { 192 return 1; 193 } 194 error=console_assign(stdin,DEVNAME); 195 if(error==0) 196 return 1; 197 else 198 return error; 199 } 200 return 1; 201 } 202 return error; 203 } 204 } 205 } 206 /* no USB Keyboard found */ 207 return -1; 208 } 209 210 211 /* deregistering the keyboard */ 212 int usb_kbd_deregister(void) 213 { 214 #ifdef CONFIG_SYS_DEVICE_DEREGISTER 215 return device_deregister(DEVNAME); 216 #else 217 return 1; 218 #endif 219 } 220 221 /************************************************************************** 222 * Low Level drivers 223 */ 224 225 /* set the LEDs. Since this is used in the irq routine, the control job 226 is issued with a timeout of 0. This means, that the job is queued without 227 waiting for job completion */ 228 229 static void usb_kbd_setled(struct usb_device *dev) 230 { 231 struct usb_interface_descriptor *iface; 232 iface = &dev->config.if_desc[0]; 233 leds=0; 234 if(scroll_lock!=0) 235 leds|=1; 236 leds<<=1; 237 if(caps_lock!=0) 238 leds|=1; 239 leds<<=1; 240 if(num_lock!=0) 241 leds|=1; 242 usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 243 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 244 0x200, iface->bInterfaceNumber,(void *)&leds, 1, 0); 245 246 } 247 248 249 #define CAPITAL_MASK 0x20 250 /* Translate the scancode in ASCII */ 251 static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed) 252 { 253 unsigned char keycode; 254 255 if(pressed==0) { 256 /* key released */ 257 repeat_delay=0; 258 return 0; 259 } 260 if(pressed==2) { 261 repeat_delay++; 262 if(repeat_delay<REPEAT_DELAY) 263 return 0; 264 repeat_delay=REPEAT_DELAY; 265 } 266 keycode=0; 267 if((scancode>3) && (scancode<=0x1d)) { /* alpha numeric values */ 268 keycode=scancode-4 + 0x61; 269 if(caps_lock) 270 keycode&=~CAPITAL_MASK; /* switch to capital Letters */ 271 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) { 272 if(keycode & CAPITAL_MASK) 273 keycode&=~CAPITAL_MASK; /* switch to capital Letters */ 274 else 275 keycode|=CAPITAL_MASK; /* switch to non capital Letters */ 276 } 277 } 278 if((scancode>0x1d) && (scancode<0x3A)) { 279 if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) /* shifted */ 280 keycode=usb_kbd_numkey_shifted[scancode-0x1e]; 281 else /* non shifted */ 282 keycode=usb_kbd_numkey[scancode-0x1e]; 283 } 284 285 if (ctrl) 286 keycode = scancode - 0x3; 287 288 if(pressed==1) { 289 if(scancode==NUM_LOCK) { 290 num_lock=~num_lock; 291 return 1; 292 } 293 if(scancode==CAPS_LOCK) { 294 caps_lock=~caps_lock; 295 return 1; 296 } 297 if(scancode==SCROLL_LOCK) { 298 scroll_lock=~scroll_lock; 299 return 1; 300 } 301 } 302 if(keycode!=0) { 303 USB_KBD_PRINTF("%c",keycode); 304 usb_kbd_put_queue(keycode); 305 } 306 return 0; 307 } 308 309 /* Interrupt service routine */ 310 static int usb_kbd_irq(struct usb_device *dev) 311 { 312 int i,res; 313 314 if((dev->irq_status!=0)||(dev->irq_act_len!=8)) 315 { 316 USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len); 317 return 1; 318 } 319 res=0; 320 321 switch (new[0]) { 322 case 0x0: /* No combo key pressed */ 323 ctrl = 0; 324 break; 325 case 0x01: /* Left Ctrl pressed */ 326 case 0x10: /* Right Ctrl pressed */ 327 ctrl = 1; 328 break; 329 } 330 331 for (i = 2; i < 8; i++) { 332 if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) { 333 res|=usb_kbd_translate(old[i],new[0],0); 334 } 335 if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) { 336 res|=usb_kbd_translate(new[i],new[0],1); 337 } 338 } 339 if((new[2]>3) && (old[2]==new[2])) /* still pressed */ 340 res|=usb_kbd_translate(new[2],new[0],2); 341 if(res==1) 342 usb_kbd_setled(dev); 343 memcpy(&old[0],&new[0], 8); 344 return 1; /* install IRQ Handler again */ 345 } 346 347 /* probes the USB device dev for keyboard type */ 348 static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) 349 { 350 struct usb_interface_descriptor *iface; 351 struct usb_endpoint_descriptor *ep; 352 int pipe,maxp; 353 354 if (dev->descriptor.bNumConfigurations != 1) return 0; 355 iface = &dev->config.if_desc[ifnum]; 356 357 if (iface->bInterfaceClass != 3) return 0; 358 if (iface->bInterfaceSubClass != 1) return 0; 359 if (iface->bInterfaceProtocol != 1) return 0; 360 if (iface->bNumEndpoints != 1) return 0; 361 362 ep = &iface->ep_desc[0]; 363 364 if (!(ep->bEndpointAddress & 0x80)) return 0; 365 if ((ep->bmAttributes & 3) != 3) return 0; 366 USB_KBD_PRINTF("USB KBD found set protocol...\n"); 367 /* ok, we found a USB Keyboard, install it */ 368 /* usb_kbd_get_hid_desc(dev); */ 369 usb_set_protocol(dev, iface->bInterfaceNumber, 0); 370 USB_KBD_PRINTF("USB KBD found set idle...\n"); 371 usb_set_idle(dev, iface->bInterfaceNumber, REPEAT_RATE, 0); 372 memset(&new[0], 0, 8); 373 memset(&old[0], 0, 8); 374 repeat_delay=0; 375 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); 376 maxp = usb_maxpacket(dev, pipe); 377 dev->irq_handle=usb_kbd_irq; 378 USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n"); 379 usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval); 380 return 1; 381 } 382 383 384 #if 0 385 struct usb_hid_descriptor { 386 unsigned char bLength; 387 unsigned char bDescriptorType; /* 0x21 for HID */ 388 unsigned short bcdHID; /* release number */ 389 unsigned char bCountryCode; 390 unsigned char bNumDescriptors; 391 unsigned char bReportDescriptorType; 392 unsigned short wDescriptorLength; 393 } __attribute__ ((packed)); 394 395 /* 396 * We parse each description item into this structure. Short items data 397 * values are expanded to 32-bit signed int, long items contain a pointer 398 * into the data area. 399 */ 400 401 struct hid_item { 402 unsigned char format; 403 unsigned char size; 404 unsigned char type; 405 unsigned char tag; 406 union { 407 unsigned char u8; 408 char s8; 409 unsigned short u16; 410 short s16; 411 unsigned long u32; 412 long s32; 413 unsigned char *longdata; 414 } data; 415 }; 416 417 /* 418 * HID report item format 419 */ 420 421 #define HID_ITEM_FORMAT_SHORT 0 422 #define HID_ITEM_FORMAT_LONG 1 423 424 /* 425 * Special tag indicating long items 426 */ 427 428 #define HID_ITEM_TAG_LONG 15 429 430 431 static struct usb_hid_descriptor usb_kbd_hid_desc; 432 433 void usb_kbd_display_hid(struct usb_hid_descriptor *hid) 434 { 435 printf("USB_HID_DESC:\n"); 436 printf(" bLenght 0x%x\n",hid->bLength); 437 printf(" bcdHID 0x%x\n",hid->bcdHID); 438 printf(" bCountryCode %d\n",hid->bCountryCode); 439 printf(" bNumDescriptors 0x%x\n",hid->bNumDescriptors); 440 printf(" bReportDescriptorType 0x%x\n",hid->bReportDescriptorType); 441 printf(" wDescriptorLength 0x%x\n",hid->wDescriptorLength); 442 } 443 444 445 /* 446 * Fetch a report description item from the data stream. We support long 447 * items, though they are not used yet. 448 */ 449 450 static int fetch_item(unsigned char *start,unsigned char *end, struct hid_item *item) 451 { 452 if((end - start) > 0) { 453 unsigned char b = *start++; 454 item->type = (b >> 2) & 3; 455 item->tag = (b >> 4) & 15; 456 if (item->tag == HID_ITEM_TAG_LONG) { 457 item->format = HID_ITEM_FORMAT_LONG; 458 if ((end - start) >= 2) { 459 item->size = *start++; 460 item->tag = *start++; 461 if ((end - start) >= item->size) { 462 item->data.longdata = start; 463 start += item->size; 464 return item->size; 465 } 466 } 467 } else { 468 item->format = HID_ITEM_FORMAT_SHORT; 469 item->size = b & 3; 470 switch (item->size) { 471 case 0: 472 return item->size; 473 case 1: 474 if ((end - start) >= 1) { 475 item->data.u8 = *start++; 476 return item->size; 477 } 478 break; 479 case 2: 480 if ((end - start) >= 2) { 481 item->data.u16 = le16_to_cpu((unsigned short *)start); 482 start+=2; 483 return item->size; 484 } 485 case 3: 486 item->size++; 487 if ((end - start) >= 4) { 488 item->data.u32 = le32_to_cpu((unsigned long *)start); 489 start+=4; 490 return item->size; 491 } 492 } 493 } 494 } 495 return -1; 496 } 497 498 /* 499 * HID report descriptor item type (prefix bit 2,3) 500 */ 501 502 #define HID_ITEM_TYPE_MAIN 0 503 #define HID_ITEM_TYPE_GLOBAL 1 504 #define HID_ITEM_TYPE_LOCAL 2 505 #define HID_ITEM_TYPE_RESERVED 3 506 /* 507 * HID report descriptor main item tags 508 */ 509 510 #define HID_MAIN_ITEM_TAG_INPUT 8 511 #define HID_MAIN_ITEM_TAG_OUTPUT 9 512 #define HID_MAIN_ITEM_TAG_FEATURE 11 513 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 514 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 515 /* 516 * HID report descriptor main item contents 517 */ 518 519 #define HID_MAIN_ITEM_CONSTANT 0x001 520 #define HID_MAIN_ITEM_VARIABLE 0x002 521 #define HID_MAIN_ITEM_RELATIVE 0x004 522 #define HID_MAIN_ITEM_WRAP 0x008 523 #define HID_MAIN_ITEM_NONLINEAR 0x010 524 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 525 #define HID_MAIN_ITEM_NULL_STATE 0x040 526 #define HID_MAIN_ITEM_VOLATILE 0x080 527 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 528 529 /* 530 * HID report descriptor collection item types 531 */ 532 533 #define HID_COLLECTION_PHYSICAL 0 534 #define HID_COLLECTION_APPLICATION 1 535 #define HID_COLLECTION_LOGICAL 2 536 /* 537 * HID report descriptor global item tags 538 */ 539 540 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 541 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 542 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 543 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 544 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 545 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 546 #define HID_GLOBAL_ITEM_TAG_UNIT 6 547 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 548 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 549 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 550 #define HID_GLOBAL_ITEM_TAG_PUSH 10 551 #define HID_GLOBAL_ITEM_TAG_POP 11 552 553 /* 554 * HID report descriptor local item tags 555 */ 556 557 #define HID_LOCAL_ITEM_TAG_USAGE 0 558 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 559 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 560 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 561 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 562 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 563 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 564 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 565 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 566 #define HID_LOCAL_ITEM_TAG_DELIMITER 10 567 568 569 static void usb_kbd_show_item(struct hid_item *item) 570 { 571 switch(item->type) { 572 case HID_ITEM_TYPE_MAIN: 573 switch(item->tag) { 574 case HID_MAIN_ITEM_TAG_INPUT: 575 printf("Main Input"); 576 break; 577 case HID_MAIN_ITEM_TAG_OUTPUT: 578 printf("Main Output"); 579 break; 580 case HID_MAIN_ITEM_TAG_FEATURE: 581 printf("Main Feature"); 582 break; 583 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION: 584 printf("Main Begin Collection"); 585 break; 586 case HID_MAIN_ITEM_TAG_END_COLLECTION: 587 printf("Main End Collection"); 588 break; 589 default: 590 printf("Main reserved %d",item->tag); 591 break; 592 } 593 break; 594 case HID_ITEM_TYPE_GLOBAL: 595 switch(item->tag) { 596 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: 597 printf("- Global Usage Page"); 598 break; 599 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: 600 printf("- Global Logical Minimum"); 601 break; 602 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: 603 printf("- Global Logical Maximum"); 604 break; 605 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: 606 printf("- Global physical Minimum"); 607 break; 608 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: 609 printf("- Global physical Maximum"); 610 break; 611 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: 612 printf("- Global Unit Exponent"); 613 break; 614 case HID_GLOBAL_ITEM_TAG_UNIT: 615 printf("- Global Unit"); 616 break; 617 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: 618 printf("- Global Report Size"); 619 break; 620 case HID_GLOBAL_ITEM_TAG_REPORT_ID: 621 printf("- Global Report ID"); 622 break; 623 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: 624 printf("- Global Report Count"); 625 break; 626 case HID_GLOBAL_ITEM_TAG_PUSH: 627 printf("- Global Push"); 628 break; 629 case HID_GLOBAL_ITEM_TAG_POP: 630 printf("- Global Pop"); 631 break; 632 default: 633 printf("- Global reserved %d",item->tag); 634 break; 635 } 636 break; 637 case HID_ITEM_TYPE_LOCAL: 638 switch(item->tag) { 639 case HID_LOCAL_ITEM_TAG_USAGE: 640 printf("-- Local Usage"); 641 break; 642 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM: 643 printf("-- Local Usage Minimum"); 644 break; 645 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM: 646 printf("-- Local Usage Maximum"); 647 break; 648 case HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX: 649 printf("-- Local Designator Index"); 650 break; 651 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM: 652 printf("-- Local Designator Minimum"); 653 break; 654 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM: 655 printf("-- Local Designator Maximum"); 656 break; 657 case HID_LOCAL_ITEM_TAG_STRING_INDEX: 658 printf("-- Local String Index"); 659 break; 660 case HID_LOCAL_ITEM_TAG_STRING_MINIMUM: 661 printf("-- Local String Minimum"); 662 break; 663 case HID_LOCAL_ITEM_TAG_STRING_MAXIMUM: 664 printf("-- Local String Maximum"); 665 break; 666 case HID_LOCAL_ITEM_TAG_DELIMITER: 667 printf("-- Local Delimiter"); 668 break; 669 default: 670 printf("-- Local reserved %d",item->tag); 671 break; 672 } 673 break; 674 default: 675 printf("--- reserved %d",item->type); 676 break; 677 } 678 switch(item->size) { 679 case 1: 680 printf(" %d",item->data.u8); 681 break; 682 case 2: 683 printf(" %d",item->data.u16); 684 break; 685 case 4: 686 printf(" %ld",item->data.u32); 687 break; 688 } 689 printf("\n"); 690 } 691 692 693 static int usb_kbd_get_hid_desc(struct usb_device *dev) 694 { 695 unsigned char buffer[256]; 696 struct usb_descriptor_header *head; 697 struct usb_config_descriptor *config; 698 int index,len,i; 699 unsigned char *start, *end; 700 struct hid_item item; 701 702 if(usb_get_configuration_no(dev,&buffer[0],0)==-1) 703 return -1; 704 head =(struct usb_descriptor_header *)&buffer[0]; 705 if(head->bDescriptorType!=USB_DT_CONFIG) { 706 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType); 707 return -1; 708 } 709 index=head->bLength; 710 config=(struct usb_config_descriptor *)&buffer[0]; 711 len=le16_to_cpu(config->wTotalLength); 712 /* Ok the first entry must be a configuration entry, now process the others */ 713 head=(struct usb_descriptor_header *)&buffer[index]; 714 while(index+1 < len) { 715 if(head->bDescriptorType==USB_DT_HID) { 716 printf("HID desc found\n"); 717 memcpy(&usb_kbd_hid_desc,&buffer[index],buffer[index]); 718 le16_to_cpus(&usb_kbd_hid_desc.bcdHID); 719 le16_to_cpus(&usb_kbd_hid_desc.wDescriptorLength); 720 usb_kbd_display_hid(&usb_kbd_hid_desc); 721 len=0; 722 break; 723 } 724 index+=head->bLength; 725 head=(struct usb_descriptor_header *)&buffer[index]; 726 } 727 if(len>0) 728 return -1; 729 len=usb_kbd_hid_desc.wDescriptorLength; 730 if((index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0], len)) < 0) { 731 printf("reading report descriptor failed\n"); 732 return -1; 733 } 734 printf(" report descriptor (size %u, read %d)\n", len, index); 735 start = &buffer[0]; 736 end = &buffer[len]; 737 i=0; 738 do { 739 index=fetch_item(start,end,&item); 740 i+=index; 741 i++; 742 if(index>=0) 743 usb_kbd_show_item(&item); 744 745 start+=index; 746 start++; 747 } while(index>=0); 748 749 } 750 751 #endif 752