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 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 #include <common.h> 11 #include <console.h> 12 #include <dm.h> 13 #include <errno.h> 14 #include <malloc.h> 15 #include <memalign.h> 16 #include <stdio_dev.h> 17 #include <asm/byteorder.h> 18 #include <linux/input.h> 19 20 #include <usb.h> 21 22 /* 23 * If overwrite_console returns 1, the stdin, stderr and stdout 24 * are switched to the serial port, else the settings in the 25 * environment are used 26 */ 27 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 28 extern int overwrite_console(void); 29 #else 30 int overwrite_console(void) 31 { 32 return 0; 33 } 34 #endif 35 36 /* Keyboard sampling rate */ 37 #define REPEAT_RATE 40 /* 40msec -> 25cps */ 38 #define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */ 39 40 #define NUM_LOCK 0x53 41 #define CAPS_LOCK 0x39 42 #define SCROLL_LOCK 0x47 43 44 /* Modifier bits */ 45 #define LEFT_CNTR (1 << 0) 46 #define LEFT_SHIFT (1 << 1) 47 #define LEFT_ALT (1 << 2) 48 #define LEFT_GUI (1 << 3) 49 #define RIGHT_CNTR (1 << 4) 50 #define RIGHT_SHIFT (1 << 5) 51 #define RIGHT_ALT (1 << 6) 52 #define RIGHT_GUI (1 << 7) 53 54 /* Size of the keyboard buffer */ 55 #define USB_KBD_BUFFER_LEN 0x20 56 57 /* Device name */ 58 #define DEVNAME "usbkbd" 59 60 /* Keyboard maps */ 61 static const unsigned char usb_kbd_numkey[] = { 62 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 63 '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']', 64 '\\', '#', ';', '\'', '`', ',', '.', '/' 65 }; 66 static const unsigned char usb_kbd_numkey_shifted[] = { 67 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', 68 '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}', 69 '|', '~', ':', '"', '~', '<', '>', '?' 70 }; 71 72 static const unsigned char usb_kbd_num_keypad[] = { 73 '/', '*', '-', '+', '\r', 74 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 75 '.', 0, 0, 0, '=' 76 }; 77 78 static const u8 usb_special_keys[] = { 79 #ifdef CONFIG_USB_KEYBOARD_FN_KEYS 80 '2', 'H', '5', '3', 'F', '6', 'C', 'D', 'B', 'A' 81 #else 82 'C', 'D', 'B', 'A' 83 #endif 84 }; 85 86 /* 87 * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this 88 * order. See usb_kbd_setled() function! 89 */ 90 #define USB_KBD_NUMLOCK (1 << 0) 91 #define USB_KBD_CAPSLOCK (1 << 1) 92 #define USB_KBD_SCROLLLOCK (1 << 2) 93 #define USB_KBD_CTRL (1 << 3) 94 95 #define USB_KBD_LEDMASK \ 96 (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK) 97 98 /* 99 * USB Keyboard reports are 8 bytes in boot protocol. 100 * Appendix B of HID Device Class Definition 1.11 101 */ 102 #define USB_KBD_BOOT_REPORT_SIZE 8 103 104 struct usb_kbd_pdata { 105 unsigned long intpipe; 106 int intpktsize; 107 int intinterval; 108 unsigned long last_report; 109 struct int_queue *intq; 110 111 uint32_t repeat_delay; 112 113 uint32_t usb_in_pointer; 114 uint32_t usb_out_pointer; 115 uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN]; 116 117 uint8_t *new; 118 uint8_t old[USB_KBD_BOOT_REPORT_SIZE]; 119 120 uint8_t flags; 121 }; 122 123 extern int __maybe_unused net_busy_flag; 124 125 /* The period of time between two calls of usb_kbd_testc(). */ 126 static unsigned long __maybe_unused kbd_testc_tms; 127 128 /* Puts character in the queue and sets up the in and out pointer. */ 129 static void usb_kbd_put_queue(struct usb_kbd_pdata *data, u8 c) 130 { 131 if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) { 132 /* Check for buffer full. */ 133 if (data->usb_out_pointer == 0) 134 return; 135 136 data->usb_in_pointer = 0; 137 } else { 138 /* Check for buffer full. */ 139 if (data->usb_in_pointer == data->usb_out_pointer - 1) 140 return; 141 142 data->usb_in_pointer++; 143 } 144 145 data->usb_kbd_buffer[data->usb_in_pointer] = c; 146 } 147 148 /* 149 * Set the LEDs. Since this is used in the irq routine, the control job is 150 * issued with a timeout of 0. This means, that the job is queued without 151 * waiting for job completion. 152 */ 153 static void usb_kbd_setled(struct usb_device *dev) 154 { 155 struct usb_interface *iface = &dev->config.if_desc[0]; 156 struct usb_kbd_pdata *data = dev->privptr; 157 ALLOC_ALIGN_BUFFER(uint32_t, leds, 1, USB_DMA_MINALIGN); 158 159 *leds = data->flags & USB_KBD_LEDMASK; 160 usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 161 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 162 0x200, iface->desc.bInterfaceNumber, leds, 1, 0); 163 } 164 165 #define CAPITAL_MASK 0x20 166 /* Translate the scancode in ASCII */ 167 static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode, 168 unsigned char modifier, int pressed) 169 { 170 uint8_t keycode = 0; 171 172 /* Key released */ 173 if (pressed == 0) { 174 data->repeat_delay = 0; 175 return 0; 176 } 177 178 if (pressed == 2) { 179 data->repeat_delay++; 180 if (data->repeat_delay < REPEAT_DELAY) 181 return 0; 182 183 data->repeat_delay = REPEAT_DELAY; 184 } 185 186 /* Alphanumeric values */ 187 if ((scancode > 3) && (scancode <= 0x1d)) { 188 keycode = scancode - 4 + 'a'; 189 190 if (data->flags & USB_KBD_CAPSLOCK) 191 keycode &= ~CAPITAL_MASK; 192 193 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) { 194 /* Handle CAPSLock + Shift pressed simultaneously */ 195 if (keycode & CAPITAL_MASK) 196 keycode &= ~CAPITAL_MASK; 197 else 198 keycode |= CAPITAL_MASK; 199 } 200 } 201 202 if ((scancode > 0x1d) && (scancode < 0x39)) { 203 /* Shift pressed */ 204 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) 205 keycode = usb_kbd_numkey_shifted[scancode - 0x1e]; 206 else 207 keycode = usb_kbd_numkey[scancode - 0x1e]; 208 } 209 210 /* Numeric keypad */ 211 if ((scancode >= 0x54) && (scancode <= 0x67)) 212 keycode = usb_kbd_num_keypad[scancode - 0x54]; 213 214 if (data->flags & USB_KBD_CTRL) 215 keycode = scancode - 0x3; 216 217 if (pressed == 1) { 218 if (scancode == NUM_LOCK) { 219 data->flags ^= USB_KBD_NUMLOCK; 220 return 1; 221 } 222 223 if (scancode == CAPS_LOCK) { 224 data->flags ^= USB_KBD_CAPSLOCK; 225 return 1; 226 } 227 if (scancode == SCROLL_LOCK) { 228 data->flags ^= USB_KBD_SCROLLLOCK; 229 return 1; 230 } 231 } 232 233 /* Report keycode if any */ 234 if (keycode) { 235 debug("%c", keycode); 236 usb_kbd_put_queue(data, keycode); 237 return 0; 238 } 239 240 #ifdef CONFIG_USB_KEYBOARD_FN_KEYS 241 if (scancode < 0x3a || scancode > 0x52 || 242 scancode == 0x46 || scancode == 0x47) 243 return 1; 244 245 usb_kbd_put_queue(data, 0x1b); 246 if (scancode < 0x3e) { 247 /* F1 - F4 */ 248 usb_kbd_put_queue(data, 0x4f); 249 usb_kbd_put_queue(data, scancode - 0x3a + 'P'); 250 return 0; 251 } 252 usb_kbd_put_queue(data, '['); 253 if (scancode < 0x42) { 254 /* F5 - F8 */ 255 usb_kbd_put_queue(data, '1'); 256 if (scancode == 0x3e) 257 --scancode; 258 keycode = scancode - 0x3f + '7'; 259 } else if (scancode < 0x49) { 260 /* F9 - F12 */ 261 usb_kbd_put_queue(data, '2'); 262 if (scancode > 0x43) 263 ++scancode; 264 keycode = scancode - 0x42 + '0'; 265 } else { 266 /* 267 * INSERT, HOME, PAGE UP, DELETE, END, PAGE DOWN, 268 * RIGHT, LEFT, DOWN, UP 269 */ 270 keycode = usb_special_keys[scancode - 0x49]; 271 } 272 usb_kbd_put_queue(data, keycode); 273 if (scancode < 0x4f && scancode != 0x4a && scancode != 0x4d) 274 usb_kbd_put_queue(data, '~'); 275 return 0; 276 #else 277 /* Left, Right, Up, Down */ 278 if (scancode > 0x4e && scancode < 0x53) { 279 usb_kbd_put_queue(data, 0x1b); 280 usb_kbd_put_queue(data, '['); 281 usb_kbd_put_queue(data, usb_special_keys[scancode - 0x4f]); 282 return 0; 283 } 284 return 1; 285 #endif /* CONFIG_USB_KEYBOARD_FN_KEYS */ 286 } 287 288 static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up) 289 { 290 uint32_t res = 0; 291 struct usb_kbd_pdata *data = dev->privptr; 292 uint8_t *new; 293 uint8_t *old; 294 295 if (up) { 296 new = data->old; 297 old = data->new; 298 } else { 299 new = data->new; 300 old = data->old; 301 } 302 303 if ((old[i] > 3) && 304 (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) == 305 new + USB_KBD_BOOT_REPORT_SIZE)) { 306 res |= usb_kbd_translate(data, old[i], data->new[0], up); 307 } 308 309 return res; 310 } 311 312 /* Interrupt service routine */ 313 static int usb_kbd_irq_worker(struct usb_device *dev) 314 { 315 struct usb_kbd_pdata *data = dev->privptr; 316 int i, res = 0; 317 318 /* No combo key pressed */ 319 if (data->new[0] == 0x00) 320 data->flags &= ~USB_KBD_CTRL; 321 /* Left or Right Ctrl pressed */ 322 else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR)) 323 data->flags |= USB_KBD_CTRL; 324 325 for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) { 326 res |= usb_kbd_service_key(dev, i, 0); 327 res |= usb_kbd_service_key(dev, i, 1); 328 } 329 330 /* Key is still pressed */ 331 if ((data->new[2] > 3) && (data->old[2] == data->new[2])) 332 res |= usb_kbd_translate(data, data->new[2], data->new[0], 2); 333 334 if (res == 1) 335 usb_kbd_setled(dev); 336 337 memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE); 338 339 return 1; 340 } 341 342 /* Keyboard interrupt handler */ 343 static int usb_kbd_irq(struct usb_device *dev) 344 { 345 if ((dev->irq_status != 0) || 346 (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) { 347 debug("USB KBD: Error %lX, len %d\n", 348 dev->irq_status, dev->irq_act_len); 349 return 1; 350 } 351 352 return usb_kbd_irq_worker(dev); 353 } 354 355 /* Interrupt polling */ 356 static inline void usb_kbd_poll_for_event(struct usb_device *dev) 357 { 358 #if defined(CONFIG_SYS_USB_EVENT_POLL) 359 struct usb_kbd_pdata *data = dev->privptr; 360 361 /* Submit an interrupt transfer request */ 362 if (usb_int_msg(dev, data->intpipe, &data->new[0], 363 data->intpktsize, data->intinterval, true) >= 0) 364 usb_kbd_irq_worker(dev); 365 #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) || \ 366 defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE) 367 #if defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) 368 struct usb_interface *iface; 369 struct usb_kbd_pdata *data = dev->privptr; 370 iface = &dev->config.if_desc[0]; 371 usb_get_report(dev, iface->desc.bInterfaceNumber, 372 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE); 373 if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) { 374 usb_kbd_irq_worker(dev); 375 #else 376 struct usb_kbd_pdata *data = dev->privptr; 377 if (poll_int_queue(dev, data->intq)) { 378 usb_kbd_irq_worker(dev); 379 /* We've consumed all queued int packets, create new */ 380 destroy_int_queue(dev, data->intq); 381 data->intq = create_int_queue(dev, data->intpipe, 1, 382 USB_KBD_BOOT_REPORT_SIZE, data->new, 383 data->intinterval); 384 #endif 385 data->last_report = get_timer(0); 386 /* Repeat last usb hid report every REPEAT_RATE ms for keyrepeat */ 387 } else if (data->last_report != -1 && 388 get_timer(data->last_report) > REPEAT_RATE) { 389 usb_kbd_irq_worker(dev); 390 data->last_report = get_timer(0); 391 } 392 #endif 393 } 394 395 /* test if a character is in the queue */ 396 static int usb_kbd_testc(struct stdio_dev *sdev) 397 { 398 struct stdio_dev *dev; 399 struct usb_device *usb_kbd_dev; 400 struct usb_kbd_pdata *data; 401 402 #ifdef CONFIG_CMD_NET 403 /* 404 * If net_busy_flag is 1, NET transfer is running, 405 * then we check key-pressed every second (first check may be 406 * less than 1 second) to improve TFTP booting performance. 407 */ 408 if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ)) 409 return 0; 410 kbd_testc_tms = get_timer(0); 411 #endif 412 dev = stdio_get_by_name(DEVNAME); 413 usb_kbd_dev = (struct usb_device *)dev->priv; 414 data = usb_kbd_dev->privptr; 415 416 usb_kbd_poll_for_event(usb_kbd_dev); 417 418 return !(data->usb_in_pointer == data->usb_out_pointer); 419 } 420 421 /* gets the character from the queue */ 422 static int usb_kbd_getc(struct stdio_dev *sdev) 423 { 424 struct stdio_dev *dev; 425 struct usb_device *usb_kbd_dev; 426 struct usb_kbd_pdata *data; 427 428 dev = stdio_get_by_name(DEVNAME); 429 usb_kbd_dev = (struct usb_device *)dev->priv; 430 data = usb_kbd_dev->privptr; 431 432 while (data->usb_in_pointer == data->usb_out_pointer) 433 usb_kbd_poll_for_event(usb_kbd_dev); 434 435 if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1) 436 data->usb_out_pointer = 0; 437 else 438 data->usb_out_pointer++; 439 440 return data->usb_kbd_buffer[data->usb_out_pointer]; 441 } 442 443 /* probes the USB device dev for keyboard type. */ 444 static int usb_kbd_probe_dev(struct usb_device *dev, unsigned int ifnum) 445 { 446 struct usb_interface *iface; 447 struct usb_endpoint_descriptor *ep; 448 struct usb_kbd_pdata *data; 449 450 if (dev->descriptor.bNumConfigurations != 1) 451 return 0; 452 453 iface = &dev->config.if_desc[ifnum]; 454 455 if (iface->desc.bInterfaceClass != USB_CLASS_HID) 456 return 0; 457 458 if (iface->desc.bInterfaceSubClass != USB_SUB_HID_BOOT) 459 return 0; 460 461 if (iface->desc.bInterfaceProtocol != USB_PROT_HID_KEYBOARD) 462 return 0; 463 464 if (iface->desc.bNumEndpoints != 1) 465 return 0; 466 467 ep = &iface->ep_desc[0]; 468 469 /* Check if endpoint 1 is interrupt endpoint */ 470 if (!(ep->bEndpointAddress & 0x80)) 471 return 0; 472 473 if ((ep->bmAttributes & 3) != 3) 474 return 0; 475 476 debug("USB KBD: found set protocol...\n"); 477 478 data = malloc(sizeof(struct usb_kbd_pdata)); 479 if (!data) { 480 printf("USB KBD: Error allocating private data\n"); 481 return 0; 482 } 483 484 /* Clear private data */ 485 memset(data, 0, sizeof(struct usb_kbd_pdata)); 486 487 /* allocate input buffer aligned and sized to USB DMA alignment */ 488 data->new = memalign(USB_DMA_MINALIGN, 489 roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN)); 490 491 /* Insert private data into USB device structure */ 492 dev->privptr = data; 493 494 /* Set IRQ handler */ 495 dev->irq_handle = usb_kbd_irq; 496 497 data->intpipe = usb_rcvintpipe(dev, ep->bEndpointAddress); 498 data->intpktsize = min(usb_maxpacket(dev, data->intpipe), 499 USB_KBD_BOOT_REPORT_SIZE); 500 data->intinterval = ep->bInterval; 501 data->last_report = -1; 502 503 /* We found a USB Keyboard, install it. */ 504 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0); 505 506 debug("USB KBD: found set idle...\n"); 507 #if !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) && \ 508 !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE) 509 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE / 4, 0); 510 #else 511 usb_set_idle(dev, iface->desc.bInterfaceNumber, 0, 0); 512 #endif 513 514 debug("USB KBD: enable interrupt pipe...\n"); 515 #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE 516 data->intq = create_int_queue(dev, data->intpipe, 1, 517 USB_KBD_BOOT_REPORT_SIZE, data->new, 518 data->intinterval); 519 if (!data->intq) { 520 #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) 521 if (usb_get_report(dev, iface->desc.bInterfaceNumber, 522 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE) < 0) { 523 #else 524 if (usb_int_msg(dev, data->intpipe, data->new, data->intpktsize, 525 data->intinterval, false) < 0) { 526 #endif 527 printf("Failed to get keyboard state from device %04x:%04x\n", 528 dev->descriptor.idVendor, dev->descriptor.idProduct); 529 /* Abort, we don't want to use that non-functional keyboard. */ 530 return 0; 531 } 532 533 /* Success. */ 534 return 1; 535 } 536 537 static int probe_usb_keyboard(struct usb_device *dev) 538 { 539 char *stdinname; 540 struct stdio_dev usb_kbd_dev; 541 int error; 542 543 /* Try probing the keyboard */ 544 if (usb_kbd_probe_dev(dev, 0) != 1) 545 return -ENOENT; 546 547 /* Register the keyboard */ 548 debug("USB KBD: register.\n"); 549 memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev)); 550 strcpy(usb_kbd_dev.name, DEVNAME); 551 usb_kbd_dev.flags = DEV_FLAGS_INPUT; 552 usb_kbd_dev.getc = usb_kbd_getc; 553 usb_kbd_dev.tstc = usb_kbd_testc; 554 usb_kbd_dev.priv = (void *)dev; 555 error = stdio_register(&usb_kbd_dev); 556 if (error) 557 return error; 558 559 stdinname = env_get("stdin"); 560 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 561 error = iomux_doenv(stdin, stdinname); 562 if (error) 563 return error; 564 #else 565 /* Check if this is the standard input device. */ 566 if (strcmp(stdinname, DEVNAME)) 567 return 1; 568 569 /* Reassign the console */ 570 if (overwrite_console()) 571 return 1; 572 573 error = console_assign(stdin, DEVNAME); 574 if (error) 575 return error; 576 #endif 577 578 return 0; 579 } 580 581 #if !CONFIG_IS_ENABLED(DM_USB) 582 /* Search for keyboard and register it if found. */ 583 int drv_usb_kbd_init(void) 584 { 585 int error, i; 586 587 debug("%s: Probing for keyboard\n", __func__); 588 /* Scan all USB Devices */ 589 for (i = 0; i < USB_MAX_DEVICE; i++) { 590 struct usb_device *dev; 591 592 /* Get USB device. */ 593 dev = usb_get_dev_index(i); 594 if (!dev) 595 break; 596 597 if (dev->devnum == -1) 598 continue; 599 600 error = probe_usb_keyboard(dev); 601 if (!error) 602 return 1; 603 if (error && error != -ENOENT) 604 return error; 605 } 606 607 /* No USB Keyboard found */ 608 return -1; 609 } 610 611 /* Deregister the keyboard. */ 612 int usb_kbd_deregister(int force) 613 { 614 #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) 615 struct stdio_dev *dev; 616 struct usb_device *usb_kbd_dev; 617 struct usb_kbd_pdata *data; 618 619 dev = stdio_get_by_name(DEVNAME); 620 if (dev) { 621 usb_kbd_dev = (struct usb_device *)dev->priv; 622 data = usb_kbd_dev->privptr; 623 if (stdio_deregister_dev(dev, force) != 0) 624 return 1; 625 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 626 if (iomux_doenv(stdin, env_get("stdin")) != 0) 627 return 1; 628 #endif 629 #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE 630 destroy_int_queue(usb_kbd_dev, data->intq); 631 #endif 632 free(data->new); 633 free(data); 634 } 635 636 return 0; 637 #else 638 return 1; 639 #endif 640 } 641 642 #endif 643 644 #if CONFIG_IS_ENABLED(DM_USB) 645 646 int usb_kbd_recv_fn(int key_fn) 647 { 648 char ch[5]; 649 int i; 650 651 if (!ftstc(stdin)) { 652 debug("No char\n"); 653 return 0; 654 } 655 656 memset(ch, 0, 5); 657 for (i = 0; i < 5; i++) { 658 if (!ftstc(stdin)) 659 break; 660 ch[i] = fgetc(stdin); 661 debug("char[%d]: 0x%x, %d\n", i, ch[i], ch[i]); 662 } 663 664 if (ch[0] != 0x1b) { 665 debug("Invalid 0x1b\n"); 666 return 0; 667 } 668 669 switch (key_fn) { 670 case KEY_F1: 671 case KEY_F2: 672 case KEY_F3: 673 case KEY_F4: 674 if (ch[1] != 0x4f) 675 return 0; 676 return (ch[2] - 21 == key_fn); 677 case KEY_F5: 678 case KEY_F6: 679 case KEY_F7: 680 case KEY_F8: 681 if (ch[1] != '[' || ch[2] != '1' || ch[4] != '~') 682 return 0; 683 return (ch[3] + 9 == key_fn); 684 case KEY_F9: 685 case KEY_F10: 686 if (ch[1] != '[' || ch[2] != '2' || ch[4] != '~') 687 return 0; 688 return (ch[3] + 19 == key_fn); 689 case KEY_F11: 690 case KEY_F12: 691 if (ch[1] != '[' || ch[2] != '2' || ch[4] != '~') 692 return 0; 693 return (ch[3] + 36 == key_fn); 694 default: 695 return 0; 696 } 697 698 return 0; 699 } 700 701 static int usb_kbd_probe(struct udevice *dev) 702 { 703 struct usb_device *udev = dev_get_parent_priv(dev); 704 705 return probe_usb_keyboard(udev); 706 } 707 708 static int usb_kbd_remove(struct udevice *dev) 709 { 710 struct usb_device *udev = dev_get_parent_priv(dev); 711 struct usb_kbd_pdata *data; 712 struct stdio_dev *sdev; 713 int ret; 714 715 sdev = stdio_get_by_name(DEVNAME); 716 if (!sdev) { 717 ret = -ENXIO; 718 goto err; 719 } 720 data = udev->privptr; 721 if (stdio_deregister_dev(sdev, true)) { 722 ret = -EPERM; 723 goto err; 724 } 725 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 726 if (iomux_doenv(stdin, env_get("stdin"))) { 727 ret = -ENOLINK; 728 goto err; 729 } 730 #endif 731 #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE 732 destroy_int_queue(udev, data->intq); 733 #endif 734 free(data->new); 735 free(data); 736 737 return 0; 738 err: 739 printf("%s: warning, ret=%d", __func__, ret); 740 return ret; 741 } 742 743 static const struct udevice_id usb_kbd_ids[] = { 744 { .compatible = "usb-keyboard" }, 745 { } 746 }; 747 748 U_BOOT_DRIVER(usb_kbd) = { 749 .name = "usb_kbd", 750 .id = UCLASS_KEYBOARD, 751 .of_match = usb_kbd_ids, 752 .probe = usb_kbd_probe, 753 .remove = usb_kbd_remove, 754 }; 755 756 static const struct usb_device_id kbd_id_table[] = { 757 { 758 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS | 759 USB_DEVICE_ID_MATCH_INT_SUBCLASS | 760 USB_DEVICE_ID_MATCH_INT_PROTOCOL, 761 .bInterfaceClass = USB_CLASS_HID, 762 .bInterfaceSubClass = USB_SUB_HID_BOOT, 763 .bInterfaceProtocol = USB_PROT_HID_KEYBOARD, 764 }, 765 { } /* Terminating entry */ 766 }; 767 768 U_BOOT_USB_DEVICE(usb_kbd, kbd_id_table); 769 770 #endif 771