1/* 2 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org> 3 * All rights reserved. 4 * 5 * Based on dev/usb/input/ukbd.c 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: releng/10.3/sys/arm/versatile/pl050.c 266152 2014-05-15 16:11:06Z ian $"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/bus.h> 35#include <sys/kernel.h> 36#include <sys/module.h> 37#include <sys/malloc.h> 38#include <sys/rman.h> 39#include <sys/proc.h> 40#include <sys/sched.h> 41#include <sys/kdb.h> 42 43#include <machine/bus.h> 44#include <machine/cpu.h> 45#include <machine/intr.h> 46 47#include <dev/fdt/fdt_common.h> 48#include <dev/ofw/openfirm.h> 49#include <dev/ofw/ofw_bus.h> 50#include <dev/ofw/ofw_bus_subr.h> 51 52#include <sys/ioccom.h> 53#include <sys/filio.h> 54#include <sys/tty.h> 55#include <sys/kbio.h> 56 57#include <dev/kbd/kbdreg.h> 58 59#include <machine/bus.h> 60#include <machine/fdt.h> 61 62#include <dev/kbd/kbdtables.h> 63 64#define KMI_LOCK() mtx_lock(&Giant) 65#define KMI_UNLOCK() mtx_unlock(&Giant) 66 67#ifdef INVARIANTS 68/* 69 * Assert that the lock is held in all contexts 70 * where the code can be executed. 71 */ 72#define KMI_LOCK_ASSERT() mtx_assert(&Giant, MA_OWNED) 73/* 74 * Assert that the lock is held in the contexts 75 * where it really has to be so. 76 */ 77#define KMI_CTX_LOCK_ASSERT() \ 78 do { \ 79 if (!kdb_active && panicstr == NULL) \ 80 mtx_assert(&Giant, MA_OWNED); \ 81 } while (0) 82#else 83#define KMI_LOCK_ASSERT() (void)0 84#define KMI_CTX_LOCK_ASSERT() (void)0 85#endif 86 87#define KMICR 0x00 88#define KMICR_TYPE_NONPS2 (1 << 5) 89#define KMICR_RXINTREN (1 << 4) 90#define KMICR_TXINTREN (1 << 3) 91#define KMICR_EN (1 << 2) 92#define KMICR_FKMID (1 << 1) 93#define KMICR_FKMIC (1 << 0) 94#define KMISTAT 0x04 95#define KMISTAT_TXEMPTY (1 << 6) 96#define KMISTAT_TXBUSY (1 << 5) 97#define KMISTAT_RXFULL (1 << 4) 98#define KMISTAT_RXBUSY (1 << 3) 99#define KMISTAT_RXPARITY (1 << 2) 100#define KMISTAT_KMIC (1 << 1) 101#define KMISTAT_KMID (1 << 0) 102#define KMIDATA 0x08 103#define KMICLKDIV 0x0C 104#define KMIIR 0x10 105#define KMIIR_TXINTR (1 << 1) 106#define KMIIR_RXINTR (1 << 0) 107 108#define KMI_DRIVER_NAME "kmi" 109#define KMI_NFKEY (sizeof(fkey_tab)/sizeof(fkey_tab[0])) /* units */ 110 111struct kmi_softc { 112 keyboard_t sc_kbd; 113 keymap_t sc_keymap; 114 accentmap_t sc_accmap; 115 fkeytab_t sc_fkeymap[KMI_NFKEY]; 116 117 struct resource* sc_mem_res; 118 struct resource* sc_irq_res; 119 void* sc_intr_hl; 120 121 int sc_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 122 int sc_state; /* shift/lock key state */ 123 int sc_accents; /* accent key index (> 0) */ 124 uint32_t sc_flags; /* flags */ 125#define KMI_FLAG_COMPOSE 0x00000001 126#define KMI_FLAG_POLLING 0x00000002 127 128 struct thread *sc_poll_thread; 129}; 130 131/* Read/Write macros for Timer used as timecounter */ 132#define pl050_kmi_read_4(sc, reg) \ 133 bus_read_4((sc)->sc_mem_res, (reg)) 134 135#define pl050_kmi_write_4(sc, reg, val) \ 136 bus_write_4((sc)->sc_mem_res, (reg), (val)) 137 138/* prototypes */ 139static void kmi_set_leds(struct kmi_softc *, uint8_t); 140static int kmi_set_typematic(keyboard_t *, int); 141static uint32_t kmi_read_char(keyboard_t *, int); 142static void kmi_clear_state(keyboard_t *); 143static int kmi_ioctl(keyboard_t *, u_long, caddr_t); 144static int kmi_enable(keyboard_t *); 145static int kmi_disable(keyboard_t *); 146 147/* early keyboard probe, not supported */ 148static int 149kmi_configure(int flags) 150{ 151 return (0); 152} 153 154/* detect a keyboard, not used */ 155static int 156kmi_probe(int unit, void *arg, int flags) 157{ 158 return (ENXIO); 159} 160 161/* reset and initialize the device, not used */ 162static int 163kmi_init(int unit, keyboard_t **kbdp, void *arg, int flags) 164{ 165 return (ENXIO); 166} 167 168/* test the interface to the device, not used */ 169static int 170kmi_test_if(keyboard_t *kbd) 171{ 172 return (0); 173} 174 175/* finish using this keyboard, not used */ 176static int 177kmi_term(keyboard_t *kbd) 178{ 179 return (ENXIO); 180} 181 182/* keyboard interrupt routine, not used */ 183static int 184kmi_intr(keyboard_t *kbd, void *arg) 185{ 186 187 return (0); 188} 189 190/* lock the access to the keyboard, not used */ 191static int 192kmi_lock(keyboard_t *kbd, int lock) 193{ 194 return (1); 195} 196 197/* 198 * Enable the access to the device; until this function is called, 199 * the client cannot read from the keyboard. 200 */ 201static int 202kmi_enable(keyboard_t *kbd) 203{ 204 205 KMI_LOCK(); 206 KBD_ACTIVATE(kbd); 207 KMI_UNLOCK(); 208 209 return (0); 210} 211 212/* disallow the access to the device */ 213static int 214kmi_disable(keyboard_t *kbd) 215{ 216 217 KMI_LOCK(); 218 KBD_DEACTIVATE(kbd); 219 KMI_UNLOCK(); 220 221 return (0); 222} 223 224/* check if data is waiting */ 225static int 226kmi_check(keyboard_t *kbd) 227{ 228 struct kmi_softc *sc = kbd->kb_data; 229 uint32_t reg; 230 231 KMI_CTX_LOCK_ASSERT(); 232 233 if (!KBD_IS_ACTIVE(kbd)) 234 return (0); 235 236 reg = pl050_kmi_read_4(sc, KMIIR); 237 return (reg & KMIIR_RXINTR); 238} 239 240/* check if char is waiting */ 241static int 242kmi_check_char_locked(keyboard_t *kbd) 243{ 244 KMI_CTX_LOCK_ASSERT(); 245 246 if (!KBD_IS_ACTIVE(kbd)) 247 return (0); 248 249 return (kmi_check(kbd)); 250} 251 252static int 253kmi_check_char(keyboard_t *kbd) 254{ 255 int result; 256 257 KMI_LOCK(); 258 result = kmi_check_char_locked(kbd); 259 KMI_UNLOCK(); 260 261 return (result); 262} 263 264/* read one byte from the keyboard if it's allowed */ 265/* Currently unused. */ 266static int 267kmi_read(keyboard_t *kbd, int wait) 268{ 269 KMI_CTX_LOCK_ASSERT(); 270 271 if (!KBD_IS_ACTIVE(kbd)) 272 return (-1); 273 274 ++(kbd->kb_count); 275 printf("Implement ME: %s\n", __func__); 276 return (0); 277} 278 279/* read char from the keyboard */ 280static uint32_t 281kmi_read_char_locked(keyboard_t *kbd, int wait) 282{ 283 struct kmi_softc *sc = kbd->kb_data; 284 uint32_t reg, data; 285 286 KMI_CTX_LOCK_ASSERT(); 287 288 if (!KBD_IS_ACTIVE(kbd)) 289 return (NOKEY); 290 291 reg = pl050_kmi_read_4(sc, KMIIR); 292 if (reg & KMIIR_RXINTR) { 293 data = pl050_kmi_read_4(sc, KMIDATA); 294 return (data); 295 } 296 297 ++kbd->kb_count; 298 return (NOKEY); 299} 300 301/* Currently wait is always false. */ 302static uint32_t 303kmi_read_char(keyboard_t *kbd, int wait) 304{ 305 uint32_t keycode; 306 307 KMI_LOCK(); 308 keycode = kmi_read_char_locked(kbd, wait); 309 KMI_UNLOCK(); 310 311 return (keycode); 312} 313 314/* some useful control functions */ 315static int 316kmi_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg) 317{ 318 struct kmi_softc *sc = kbd->kb_data; 319 int i; 320#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 321 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 322 int ival; 323 324#endif 325 326 KMI_LOCK_ASSERT(); 327 328 switch (cmd) { 329 case KDGKBMODE: /* get keyboard mode */ 330 *(int *)arg = sc->sc_mode; 331 break; 332#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 333 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 334 case _IO('K', 7): 335 ival = IOCPARM_IVAL(arg); 336 arg = (caddr_t)&ival; 337 /* FALLTHROUGH */ 338#endif 339 case KDSKBMODE: /* set keyboard mode */ 340 switch (*(int *)arg) { 341 case K_XLATE: 342 if (sc->sc_mode != K_XLATE) { 343 /* make lock key state and LED state match */ 344 sc->sc_state &= ~LOCK_MASK; 345 sc->sc_state |= KBD_LED_VAL(kbd); 346 } 347 /* FALLTHROUGH */ 348 case K_RAW: 349 case K_CODE: 350 if (sc->sc_mode != *(int *)arg) { 351 if ((sc->sc_flags & KMI_FLAG_POLLING) == 0) 352 kmi_clear_state(kbd); 353 sc->sc_mode = *(int *)arg; 354 } 355 break; 356 default: 357 return (EINVAL); 358 } 359 break; 360 361 case KDGETLED: /* get keyboard LED */ 362 *(int *)arg = KBD_LED_VAL(kbd); 363 break; 364#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 365 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 366 case _IO('K', 66): 367 ival = IOCPARM_IVAL(arg); 368 arg = (caddr_t)&ival; 369 /* FALLTHROUGH */ 370#endif 371 case KDSETLED: /* set keyboard LED */ 372 /* NOTE: lock key state in "sc_state" won't be changed */ 373 if (*(int *)arg & ~LOCK_MASK) 374 return (EINVAL); 375 376 i = *(int *)arg; 377 378 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 379 if (sc->sc_mode == K_XLATE && 380 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 381 if (i & ALKED) 382 i |= CLKED; 383 else 384 i &= ~CLKED; 385 } 386 if (KBD_HAS_DEVICE(kbd)) 387 kmi_set_leds(sc, i); 388 389 KBD_LED_VAL(kbd) = *(int *)arg; 390 break; 391 case KDGKBSTATE: /* get lock key state */ 392 *(int *)arg = sc->sc_state & LOCK_MASK; 393 break; 394#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 395 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 396 case _IO('K', 20): 397 ival = IOCPARM_IVAL(arg); 398 arg = (caddr_t)&ival; 399 /* FALLTHROUGH */ 400#endif 401 case KDSKBSTATE: /* set lock key state */ 402 if (*(int *)arg & ~LOCK_MASK) { 403 return (EINVAL); 404 } 405 sc->sc_state &= ~LOCK_MASK; 406 sc->sc_state |= *(int *)arg; 407 408 /* set LEDs and quit */ 409 return (kmi_ioctl(kbd, KDSETLED, arg)); 410 411 case KDSETREPEAT: /* set keyboard repeat rate (new 412 * interface) */ 413 if (!KBD_HAS_DEVICE(kbd)) { 414 return (0); 415 } 416 if (((int *)arg)[1] < 0) { 417 return (EINVAL); 418 } 419 if (((int *)arg)[0] < 0) { 420 return (EINVAL); 421 } 422 if (((int *)arg)[0] < 200) /* fastest possible value */ 423 kbd->kb_delay1 = 200; 424 else 425 kbd->kb_delay1 = ((int *)arg)[0]; 426 kbd->kb_delay2 = ((int *)arg)[1]; 427 return (0); 428 429#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 430 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 431 case _IO('K', 67): 432 ival = IOCPARM_IVAL(arg); 433 arg = (caddr_t)&ival; 434 /* FALLTHROUGH */ 435#endif 436 case KDSETRAD: /* set keyboard repeat rate (old 437 * interface) */ 438 return (kmi_set_typematic(kbd, *(int *)arg)); 439 440 case PIO_KEYMAP: /* set keyboard translation table */ 441 case OPIO_KEYMAP: /* set keyboard translation table 442 * (compat) */ 443 case PIO_KEYMAPENT: /* set keyboard translation table 444 * entry */ 445 case PIO_DEADKEYMAP: /* set accent key translation table */ 446 sc->sc_accents = 0; 447 /* FALLTHROUGH */ 448 default: 449 return (genkbd_commonioctl(kbd, cmd, arg)); 450 } 451 452 return (0); 453} 454 455static int 456kmi_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 457{ 458 int result; 459 460 /* 461 * XXX KDGKBSTATE, KDSKBSTATE and KDSETLED can be called from any 462 * context where printf(9) can be called, which among other things 463 * includes interrupt filters and threads with any kinds of locks 464 * already held. For this reason it would be dangerous to acquire 465 * the Giant here unconditionally. On the other hand we have to 466 * have it to handle the ioctl. 467 * So we make our best effort to auto-detect whether we can grab 468 * the Giant or not. Blame syscons(4) for this. 469 */ 470 switch (cmd) { 471 case KDGKBSTATE: 472 case KDSKBSTATE: 473 case KDSETLED: 474 if (!mtx_owned(&Giant) && !SCHEDULER_STOPPED()) 475 return (EDEADLK); /* best I could come up with */ 476 /* FALLTHROUGH */ 477 default: 478 KMI_LOCK(); 479 result = kmi_ioctl_locked(kbd, cmd, arg); 480 KMI_UNLOCK(); 481 return (result); 482 } 483} 484 485 486/* clear the internal state of the keyboard */ 487static void 488kmi_clear_state(keyboard_t *kbd) 489{ 490 struct kmi_softc *sc = kbd->kb_data; 491 492 KMI_CTX_LOCK_ASSERT(); 493 494 sc->sc_flags &= ~(KMI_FLAG_COMPOSE | KMI_FLAG_POLLING); 495 sc->sc_state &= LOCK_MASK; /* preserve locking key state */ 496 sc->sc_accents = 0; 497} 498 499/* save the internal state, not used */ 500static int 501kmi_get_state(keyboard_t *kbd, void *buf, size_t len) 502{ 503 return (len == 0) ? 1 : -1; 504} 505 506/* set the internal state, not used */ 507static int 508kmi_set_state(keyboard_t *kbd, void *buf, size_t len) 509{ 510 return (EINVAL); 511} 512 513static int 514kmi_poll(keyboard_t *kbd, int on) 515{ 516 struct kmi_softc *sc = kbd->kb_data; 517 518 KMI_LOCK(); 519 if (on) { 520 sc->sc_flags |= KMI_FLAG_POLLING; 521 sc->sc_poll_thread = curthread; 522 } else { 523 sc->sc_flags &= ~KMI_FLAG_POLLING; 524 } 525 KMI_UNLOCK(); 526 527 return (0); 528} 529 530/* local functions */ 531 532static void 533kmi_set_leds(struct kmi_softc *sc, uint8_t leds) 534{ 535 536 KMI_LOCK_ASSERT(); 537 538 /* start transfer, if not already started */ 539 printf("Implement me: %s\n", __func__); 540} 541 542static int 543kmi_set_typematic(keyboard_t *kbd, int code) 544{ 545 static const int delays[] = {250, 500, 750, 1000}; 546 static const int rates[] = {34, 38, 42, 46, 50, 55, 59, 63, 547 68, 76, 84, 92, 100, 110, 118, 126, 548 136, 152, 168, 184, 200, 220, 236, 252, 549 272, 304, 336, 368, 400, 440, 472, 504}; 550 551 if (code & ~0x7f) { 552 return (EINVAL); 553 } 554 kbd->kb_delay1 = delays[(code >> 5) & 3]; 555 kbd->kb_delay2 = rates[code & 0x1f]; 556 return (0); 557} 558 559static keyboard_switch_t kmisw = { 560 .probe = &kmi_probe, 561 .init = &kmi_init, 562 .term = &kmi_term, 563 .intr = &kmi_intr, 564 .test_if = &kmi_test_if, 565 .enable = &kmi_enable, 566 .disable = &kmi_disable, 567 .read = &kmi_read, 568 .check = &kmi_check, 569 .read_char = &kmi_read_char, 570 .check_char = &kmi_check_char, 571 .ioctl = &kmi_ioctl, 572 .lock = &kmi_lock, 573 .clear_state = &kmi_clear_state, 574 .get_state = &kmi_get_state, 575 .set_state = &kmi_set_state, 576 .get_fkeystr = &genkbd_get_fkeystr, 577 .poll = &kmi_poll, 578 .diag = &genkbd_diag, 579}; 580 581KEYBOARD_DRIVER(kmi, kmisw, kmi_configure); 582 583static void 584pl050_kmi_intr(void *arg) 585{ 586 struct kmi_softc *sc = arg; 587 uint32_t c; 588 589 KMI_CTX_LOCK_ASSERT(); 590 591 if ((sc->sc_flags & KMI_FLAG_POLLING) != 0) 592 return; 593 594 if (KBD_IS_ACTIVE(&sc->sc_kbd) && 595 KBD_IS_BUSY(&sc->sc_kbd)) { 596 /* let the callback function process the input */ 597 (sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT, 598 sc->sc_kbd.kb_callback.kc_arg); 599 } else { 600 /* read and discard the input, no one is waiting for it */ 601 do { 602 c = kmi_read_char_locked(&sc->sc_kbd, 0); 603 } while (c != NOKEY); 604 } 605 606} 607 608static int 609pl050_kmi_probe(device_t dev) 610{ 611 612 if (!ofw_bus_status_okay(dev)) 613 return (ENXIO); 614 615 if (ofw_bus_is_compatible(dev, "arm,pl050")) { 616 device_set_desc(dev, "PL050 Keyboard/Mouse Interface"); 617 return (BUS_PROBE_DEFAULT); 618 } 619 620 return (ENXIO); 621} 622 623static int 624pl050_kmi_attach(device_t dev) 625{ 626 struct kmi_softc *sc = device_get_softc(dev); 627 keyboard_t *kbd; 628 int rid; 629 int i; 630 631 kbd = &sc->sc_kbd; 632 rid = 0; 633 634 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 635 if (sc->sc_mem_res == NULL) { 636 device_printf(dev, "could not allocate memory resource\n"); 637 return (ENXIO); 638 } 639 640 /* Request the IRQ resources */ 641 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 642 if (sc->sc_irq_res == NULL) { 643 device_printf(dev, "Error: could not allocate irq resources\n"); 644 return (ENXIO); 645 } 646 647 /* Setup and enable the timer */ 648 if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_CLK, 649 NULL, pl050_kmi_intr, sc, 650 &sc->sc_intr_hl) != 0) { 651 bus_release_resource(dev, SYS_RES_IRQ, rid, 652 sc->sc_irq_res); 653 device_printf(dev, "Unable to setup the clock irq handler.\n"); 654 return (ENXIO); 655 } 656 657 /* TODO: clock & divisor */ 658 659 pl050_kmi_write_4(sc, KMICR, KMICR_EN | KMICR_RXINTREN); 660 661 kbd_init_struct(kbd, KMI_DRIVER_NAME, KB_OTHER, 662 device_get_unit(dev), 0, 0, 0); 663 kbd->kb_data = (void *)sc; 664 665 sc->sc_keymap = key_map; 666 sc->sc_accmap = accent_map; 667 for (i = 0; i < KMI_NFKEY; i++) { 668 sc->sc_fkeymap[i] = fkey_tab[i]; 669 } 670 671 kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap, 672 sc->sc_fkeymap, KMI_NFKEY); 673 674 KBD_FOUND_DEVICE(kbd); 675 kmi_clear_state(kbd); 676 KBD_PROBE_DONE(kbd); 677 678 KBD_INIT_DONE(kbd); 679 680 if (kbd_register(kbd) < 0) { 681 goto detach; 682 } 683 KBD_CONFIG_DONE(kbd); 684 685#ifdef KBD_INSTALL_CDEV 686 if (kbd_attach(kbd)) { 687 goto detach; 688 } 689#endif 690 691 if (bootverbose) { 692 genkbd_diag(kbd, bootverbose); 693 } 694 return (0); 695 696detach: 697 return (ENXIO); 698 699} 700 701static device_method_t pl050_kmi_methods[] = { 702 DEVMETHOD(device_probe, pl050_kmi_probe), 703 DEVMETHOD(device_attach, pl050_kmi_attach), 704 { 0, 0 } 705}; 706 707static driver_t pl050_kmi_driver = { 708 "kmi", 709 pl050_kmi_methods, 710 sizeof(struct kmi_softc), 711}; 712 713static devclass_t pl050_kmi_devclass; 714 715DRIVER_MODULE(pl050_kmi, simplebus, pl050_kmi_driver, pl050_kmi_devclass, 0, 0); 716