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 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 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 */ 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 */ 229 230 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 */ 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(scancode==NUM_LOCK) { 291 num_lock=~num_lock; 292 return 1; 293 } 294 if(scancode==CAPS_LOCK) { 295 caps_lock=~caps_lock; 296 return 1; 297 } 298 if(scancode==SCROLL_LOCK) { 299 scroll_lock=~scroll_lock; 300 return 1; 301 } 302 } 303 if(keycode!=0) { 304 USB_KBD_PRINTF("%c",keycode); 305 usb_kbd_put_queue(keycode); 306 } 307 return 0; 308 } 309 310 /* Interrupt service routine */ 311 static int usb_kbd_irq(struct usb_device *dev) 312 { 313 int i,res; 314 315 if((dev->irq_status!=0)||(dev->irq_act_len!=8)) 316 { 317 USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len); 318 return 1; 319 } 320 res=0; 321 322 switch (new[0]) { 323 case 0x0: /* No combo key pressed */ 324 ctrl = 0; 325 break; 326 case 0x01: /* Left Ctrl pressed */ 327 case 0x10: /* Right Ctrl pressed */ 328 ctrl = 1; 329 break; 330 } 331 332 for (i = 2; i < 8; i++) { 333 if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) { 334 res|=usb_kbd_translate(old[i],new[0],0); 335 } 336 if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) { 337 res|=usb_kbd_translate(new[i],new[0],1); 338 } 339 } 340 if((new[2]>3) && (old[2]==new[2])) /* still pressed */ 341 res|=usb_kbd_translate(new[2],new[0],2); 342 if(res==1) 343 usb_kbd_setled(dev); 344 memcpy(&old[0],&new[0], 8); 345 return 1; /* install IRQ Handler again */ 346 } 347 348 /* probes the USB device dev for keyboard type */ 349 static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) 350 { 351 struct usb_interface *iface; 352 struct usb_endpoint_descriptor *ep; 353 int pipe,maxp; 354 355 if (dev->descriptor.bNumConfigurations != 1) return 0; 356 iface = &dev->config.if_desc[ifnum]; 357 358 if (iface->desc.bInterfaceClass != 3) 359 return 0; 360 if (iface->desc.bInterfaceSubClass != 1) 361 return 0; 362 if (iface->desc.bInterfaceProtocol != 1) 363 return 0; 364 if (iface->desc.bNumEndpoints != 1) 365 return 0; 366 367 ep = &iface->ep_desc[0]; 368 369 if (!(ep->bEndpointAddress & 0x80)) return 0; 370 if ((ep->bmAttributes & 3) != 3) return 0; 371 USB_KBD_PRINTF("USB KBD found set protocol...\n"); 372 /* ok, we found a USB Keyboard, install it */ 373 /* usb_kbd_get_hid_desc(dev); */ 374 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0); 375 USB_KBD_PRINTF("USB KBD found set idle...\n"); 376 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0); 377 memset(&new[0], 0, 8); 378 memset(&old[0], 0, 8); 379 repeat_delay=0; 380 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); 381 maxp = usb_maxpacket(dev, pipe); 382 dev->irq_handle=usb_kbd_irq; 383 USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n"); 384 usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval); 385 return 1; 386 } 387 388 389 #if 0 390 struct usb_hid_descriptor { 391 unsigned char bLength; 392 unsigned char bDescriptorType; /* 0x21 for HID */ 393 unsigned short bcdHID; /* release number */ 394 unsigned char bCountryCode; 395 unsigned char bNumDescriptors; 396 unsigned char bReportDescriptorType; 397 unsigned short wDescriptorLength; 398 } __attribute__ ((packed)); 399 400 /* 401 * We parse each description item into this structure. Short items data 402 * values are expanded to 32-bit signed int, long items contain a pointer 403 * into the data area. 404 */ 405 406 struct hid_item { 407 unsigned char format; 408 unsigned char size; 409 unsigned char type; 410 unsigned char tag; 411 union { 412 unsigned char u8; 413 char s8; 414 unsigned short u16; 415 short s16; 416 unsigned long u32; 417 long s32; 418 unsigned char *longdata; 419 } data; 420 }; 421 422 /* 423 * HID report item format 424 */ 425 426 #define HID_ITEM_FORMAT_SHORT 0 427 #define HID_ITEM_FORMAT_LONG 1 428 429 /* 430 * Special tag indicating long items 431 */ 432 433 #define HID_ITEM_TAG_LONG 15 434 435 436 static struct usb_hid_descriptor usb_kbd_hid_desc; 437 438 void usb_kbd_display_hid(struct usb_hid_descriptor *hid) 439 { 440 printf("USB_HID_DESC:\n"); 441 printf(" bLenght 0x%x\n",hid->bLength); 442 printf(" bcdHID 0x%x\n",hid->bcdHID); 443 printf(" bCountryCode %d\n",hid->bCountryCode); 444 printf(" bNumDescriptors 0x%x\n",hid->bNumDescriptors); 445 printf(" bReportDescriptorType 0x%x\n",hid->bReportDescriptorType); 446 printf(" wDescriptorLength 0x%x\n",hid->wDescriptorLength); 447 } 448 449 450 /* 451 * Fetch a report description item from the data stream. We support long 452 * items, though they are not used yet. 453 */ 454 455 static int fetch_item(unsigned char *start,unsigned char *end, struct hid_item *item) 456 { 457 if((end - start) > 0) { 458 unsigned char b = *start++; 459 item->type = (b >> 2) & 3; 460 item->tag = (b >> 4) & 15; 461 if (item->tag == HID_ITEM_TAG_LONG) { 462 item->format = HID_ITEM_FORMAT_LONG; 463 if ((end - start) >= 2) { 464 item->size = *start++; 465 item->tag = *start++; 466 if ((end - start) >= item->size) { 467 item->data.longdata = start; 468 start += item->size; 469 return item->size; 470 } 471 } 472 } else { 473 item->format = HID_ITEM_FORMAT_SHORT; 474 item->size = b & 3; 475 switch (item->size) { 476 case 0: 477 return item->size; 478 case 1: 479 if ((end - start) >= 1) { 480 item->data.u8 = *start++; 481 return item->size; 482 } 483 break; 484 case 2: 485 if ((end - start) >= 2) { 486 item->data.u16 = le16_to_cpu((unsigned short *)start); 487 start+=2; 488 return item->size; 489 } 490 case 3: 491 item->size++; 492 if ((end - start) >= 4) { 493 item->data.u32 = le32_to_cpu((unsigned long *)start); 494 start+=4; 495 return item->size; 496 } 497 } 498 } 499 } 500 return -1; 501 } 502 503 /* 504 * HID report descriptor item type (prefix bit 2,3) 505 */ 506 507 #define HID_ITEM_TYPE_MAIN 0 508 #define HID_ITEM_TYPE_GLOBAL 1 509 #define HID_ITEM_TYPE_LOCAL 2 510 #define HID_ITEM_TYPE_RESERVED 3 511 /* 512 * HID report descriptor main item tags 513 */ 514 515 #define HID_MAIN_ITEM_TAG_INPUT 8 516 #define HID_MAIN_ITEM_TAG_OUTPUT 9 517 #define HID_MAIN_ITEM_TAG_FEATURE 11 518 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 519 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 520 /* 521 * HID report descriptor main item contents 522 */ 523 524 #define HID_MAIN_ITEM_CONSTANT 0x001 525 #define HID_MAIN_ITEM_VARIABLE 0x002 526 #define HID_MAIN_ITEM_RELATIVE 0x004 527 #define HID_MAIN_ITEM_WRAP 0x008 528 #define HID_MAIN_ITEM_NONLINEAR 0x010 529 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 530 #define HID_MAIN_ITEM_NULL_STATE 0x040 531 #define HID_MAIN_ITEM_VOLATILE 0x080 532 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 533 534 /* 535 * HID report descriptor collection item types 536 */ 537 538 #define HID_COLLECTION_PHYSICAL 0 539 #define HID_COLLECTION_APPLICATION 1 540 #define HID_COLLECTION_LOGICAL 2 541 /* 542 * HID report descriptor global item tags 543 */ 544 545 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 546 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 547 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 548 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 549 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 550 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 551 #define HID_GLOBAL_ITEM_TAG_UNIT 6 552 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 553 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 554 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 555 #define HID_GLOBAL_ITEM_TAG_PUSH 10 556 #define HID_GLOBAL_ITEM_TAG_POP 11 557 558 /* 559 * HID report descriptor local item tags 560 */ 561 562 #define HID_LOCAL_ITEM_TAG_USAGE 0 563 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 564 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 565 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 566 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 567 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 568 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 569 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 570 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 571 #define HID_LOCAL_ITEM_TAG_DELIMITER 10 572 573 574 static void usb_kbd_show_item(struct hid_item *item) 575 { 576 switch(item->type) { 577 case HID_ITEM_TYPE_MAIN: 578 switch(item->tag) { 579 case HID_MAIN_ITEM_TAG_INPUT: 580 printf("Main Input"); 581 break; 582 case HID_MAIN_ITEM_TAG_OUTPUT: 583 printf("Main Output"); 584 break; 585 case HID_MAIN_ITEM_TAG_FEATURE: 586 printf("Main Feature"); 587 break; 588 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION: 589 printf("Main Begin Collection"); 590 break; 591 case HID_MAIN_ITEM_TAG_END_COLLECTION: 592 printf("Main End Collection"); 593 break; 594 default: 595 printf("Main reserved %d",item->tag); 596 break; 597 } 598 break; 599 case HID_ITEM_TYPE_GLOBAL: 600 switch(item->tag) { 601 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: 602 printf("- Global Usage Page"); 603 break; 604 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: 605 printf("- Global Logical Minimum"); 606 break; 607 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: 608 printf("- Global Logical Maximum"); 609 break; 610 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: 611 printf("- Global physical Minimum"); 612 break; 613 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: 614 printf("- Global physical Maximum"); 615 break; 616 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: 617 printf("- Global Unit Exponent"); 618 break; 619 case HID_GLOBAL_ITEM_TAG_UNIT: 620 printf("- Global Unit"); 621 break; 622 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: 623 printf("- Global Report Size"); 624 break; 625 case HID_GLOBAL_ITEM_TAG_REPORT_ID: 626 printf("- Global Report ID"); 627 break; 628 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: 629 printf("- Global Report Count"); 630 break; 631 case HID_GLOBAL_ITEM_TAG_PUSH: 632 printf("- Global Push"); 633 break; 634 case HID_GLOBAL_ITEM_TAG_POP: 635 printf("- Global Pop"); 636 break; 637 default: 638 printf("- Global reserved %d",item->tag); 639 break; 640 } 641 break; 642 case HID_ITEM_TYPE_LOCAL: 643 switch(item->tag) { 644 case HID_LOCAL_ITEM_TAG_USAGE: 645 printf("-- Local Usage"); 646 break; 647 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM: 648 printf("-- Local Usage Minimum"); 649 break; 650 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM: 651 printf("-- Local Usage Maximum"); 652 break; 653 case HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX: 654 printf("-- Local Designator Index"); 655 break; 656 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM: 657 printf("-- Local Designator Minimum"); 658 break; 659 case HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM: 660 printf("-- Local Designator Maximum"); 661 break; 662 case HID_LOCAL_ITEM_TAG_STRING_INDEX: 663 printf("-- Local String Index"); 664 break; 665 case HID_LOCAL_ITEM_TAG_STRING_MINIMUM: 666 printf("-- Local String Minimum"); 667 break; 668 case HID_LOCAL_ITEM_TAG_STRING_MAXIMUM: 669 printf("-- Local String Maximum"); 670 break; 671 case HID_LOCAL_ITEM_TAG_DELIMITER: 672 printf("-- Local Delimiter"); 673 break; 674 default: 675 printf("-- Local reserved %d",item->tag); 676 break; 677 } 678 break; 679 default: 680 printf("--- reserved %d",item->type); 681 break; 682 } 683 switch(item->size) { 684 case 1: 685 printf(" %d",item->data.u8); 686 break; 687 case 2: 688 printf(" %d",item->data.u16); 689 break; 690 case 4: 691 printf(" %ld",item->data.u32); 692 break; 693 } 694 printf("\n"); 695 } 696 697 698 static int usb_kbd_get_hid_desc(struct usb_device *dev) 699 { 700 unsigned char buffer[256]; 701 struct usb_descriptor_header *head; 702 struct usb_config_descriptor *config; 703 int index,len,i; 704 unsigned char *start, *end; 705 struct hid_item item; 706 707 if(usb_get_configuration_no(dev,&buffer[0],0)==-1) 708 return -1; 709 head =(struct usb_descriptor_header *)&buffer[0]; 710 if(head->bDescriptorType!=USB_DT_CONFIG) { 711 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType); 712 return -1; 713 } 714 index=head->bLength; 715 config=(struct usb_config_descriptor *)&buffer[0]; 716 len=le16_to_cpu(config->wTotalLength); 717 /* Ok the first entry must be a configuration entry, now process the others */ 718 head=(struct usb_descriptor_header *)&buffer[index]; 719 while(index+1 < len) { 720 if(head->bDescriptorType==USB_DT_HID) { 721 printf("HID desc found\n"); 722 memcpy(&usb_kbd_hid_desc,&buffer[index],buffer[index]); 723 le16_to_cpus(&usb_kbd_hid_desc.bcdHID); 724 le16_to_cpus(&usb_kbd_hid_desc.wDescriptorLength); 725 usb_kbd_display_hid(&usb_kbd_hid_desc); 726 len=0; 727 break; 728 } 729 index+=head->bLength; 730 head=(struct usb_descriptor_header *)&buffer[index]; 731 } 732 if(len>0) 733 return -1; 734 len=usb_kbd_hid_desc.wDescriptorLength; 735 if((index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0], len)) < 0) { 736 printf("reading report descriptor failed\n"); 737 return -1; 738 } 739 printf(" report descriptor (size %u, read %d)\n", len, index); 740 start = &buffer[0]; 741 end = &buffer[len]; 742 i=0; 743 do { 744 index=fetch_item(start,end,&item); 745 i+=index; 746 i++; 747 if(index>=0) 748 usb_kbd_show_item(&item); 749 750 start+=index; 751 start++; 752 } while(index>=0); 753 754 } 755 756 #endif 757