1 /* $OpenBSD: uhidev.c,v 1.32 2008/06/14 02:40:23 todd Exp $ */ 2 /* $NetBSD: uhidev.c,v 1.14 2003/03/11 16:44:00 augustss Exp $ */ 3 4 /* 5 * Copyright (c) 2001 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf 43 */ 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/malloc.h> 49 #include <sys/signalvar.h> 50 #include <sys/device.h> 51 #include <sys/ioctl.h> 52 #include <sys/conf.h> 53 54 #include <dev/usb/usb.h> 55 #include <dev/usb/usbhid.h> 56 57 #include <dev/usb/usbdevs.h> 58 #include <dev/usb/usbdi.h> 59 #include <dev/usb/usbdi_util.h> 60 #include <dev/usb/hid.h> 61 #include <dev/usb/usb_quirks.h> 62 63 #include <dev/usb/uhidev.h> 64 65 /* Report descriptor for broken Wacom Graphire */ 66 #include <dev/usb/ugraphire_rdesc.h> 67 68 #ifdef UHIDEV_DEBUG 69 #define DPRINTF(x) do { if (uhidevdebug) printf x; } while (0) 70 #define DPRINTFN(n,x) do { if (uhidevdebug>(n)) printf x; } while (0) 71 int uhidevdebug = 0; 72 #else 73 #define DPRINTF(x) 74 #define DPRINTFN(n,x) 75 #endif 76 77 void uhidev_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 78 79 int uhidev_maxrepid(void *buf, int len); 80 int uhidevprint(void *aux, const char *pnp); 81 int uhidevsubmatch(struct device *parent, void *cf, void *aux); 82 83 int uhidev_match(struct device *, void *, void *); 84 void uhidev_attach(struct device *, struct device *, void *); 85 int uhidev_detach(struct device *, int); 86 int uhidev_activate(struct device *, enum devact); 87 88 struct cfdriver uhidev_cd = { 89 NULL, "uhidev", DV_DULL 90 }; 91 92 const struct cfattach uhidev_ca = { 93 sizeof(struct uhidev_softc), 94 uhidev_match, 95 uhidev_attach, 96 uhidev_detach, 97 uhidev_activate, 98 }; 99 100 int 101 uhidev_match(struct device *parent, void *match, void *aux) 102 { 103 struct usb_attach_arg *uaa = aux; 104 usb_interface_descriptor_t *id; 105 106 if (uaa->iface == NULL) 107 return (UMATCH_NONE); 108 id = usbd_get_interface_descriptor(uaa->iface); 109 if (id == NULL || id->bInterfaceClass != UICLASS_HID) 110 return (UMATCH_NONE); 111 if (usbd_get_quirks(uaa->device)->uq_flags & UQ_BAD_HID) 112 return (UMATCH_NONE); 113 if (uaa->matchlvl) 114 return (uaa->matchlvl); 115 116 return (UMATCH_IFACECLASS_GENERIC); 117 } 118 119 void 120 uhidev_attach(struct device *parent, struct device *self, void *aux) 121 { 122 struct uhidev_softc *sc = (struct uhidev_softc *)self; 123 struct usb_attach_arg *uaa = aux; 124 usbd_interface_handle iface = uaa->iface; 125 usb_interface_descriptor_t *id; 126 usb_endpoint_descriptor_t *ed; 127 struct uhidev_attach_arg uha; 128 struct uhidev *dev; 129 int size, nrepid, repid, repsz; 130 int repsizes[256]; 131 int i; 132 void *desc; 133 const void *descptr; 134 usbd_status err; 135 136 sc->sc_udev = uaa->device; 137 sc->sc_iface = iface; 138 id = usbd_get_interface_descriptor(iface); 139 140 (void)usbd_set_idle(iface, 0, 0); 141 #if 0 142 143 qflags = usbd_get_quirks(sc->sc_udev)->uq_flags; 144 if ((qflags & UQ_NO_SET_PROTO) == 0 && 145 id->bInterfaceSubClass != UISUBCLASS_BOOT) 146 (void)usbd_set_protocol(iface, 1); 147 #endif 148 149 sc->sc_iep_addr = sc->sc_oep_addr = -1; 150 for (i = 0; i < id->bNumEndpoints; i++) { 151 ed = usbd_interface2endpoint_descriptor(iface, i); 152 if (ed == NULL) { 153 printf("%s: could not read endpoint descriptor\n", 154 sc->sc_dev.dv_xname); 155 sc->sc_dying = 1; 156 return; 157 } 158 159 DPRINTFN(10,("uhidev_attach: bLength=%d bDescriptorType=%d " 160 "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d" 161 " bInterval=%d\n", 162 ed->bLength, ed->bDescriptorType, 163 ed->bEndpointAddress & UE_ADDR, 164 UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out", 165 ed->bmAttributes & UE_XFERTYPE, 166 UGETW(ed->wMaxPacketSize), ed->bInterval)); 167 168 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 169 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 170 sc->sc_iep_addr = ed->bEndpointAddress; 171 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 172 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 173 sc->sc_oep_addr = ed->bEndpointAddress; 174 } else { 175 printf("%s: unexpected endpoint\n", sc->sc_dev.dv_xname); 176 sc->sc_dying = 1; 177 return; 178 } 179 } 180 181 /* 182 * Check that we found an input interrupt endpoint. The output interrupt 183 * endpoint is optional 184 */ 185 if (sc->sc_iep_addr == -1) { 186 printf("%s: no input interrupt endpoint\n", sc->sc_dev.dv_xname); 187 sc->sc_dying = 1; 188 return; 189 } 190 191 /* XXX need to extend this */ 192 descptr = NULL; 193 if (uaa->vendor == USB_VENDOR_WACOM) { 194 static uByte reportbuf[] = {2, 2, 2}; 195 196 /* The report descriptor for the Wacom Graphire is broken. */ 197 switch (uaa->product) { 198 case USB_PRODUCT_WACOM_GRAPHIRE: 199 size = sizeof uhid_graphire_report_descr; 200 descptr = uhid_graphire_report_descr; 201 break; 202 case USB_PRODUCT_WACOM_GRAPHIRE3_4X5: 203 case USB_PRODUCT_WACOM_GRAPHIRE4_4X5: 204 usbd_set_report(uaa->iface, UHID_FEATURE_REPORT, 2, 205 &reportbuf, sizeof reportbuf); 206 size = sizeof uhid_graphire3_4x5_report_descr; 207 descptr = uhid_graphire3_4x5_report_descr; 208 break; 209 default: 210 /* Keep descriptor */ 211 break; 212 } 213 } 214 215 if (descptr) { 216 desc = malloc(size, M_USBDEV, M_NOWAIT); 217 if (desc == NULL) 218 err = USBD_NOMEM; 219 else { 220 err = USBD_NORMAL_COMPLETION; 221 memcpy(desc, descptr, size); 222 } 223 } else { 224 desc = NULL; 225 err = usbd_read_report_desc(uaa->iface, &desc, &size, M_USBDEV); 226 } 227 if (err) { 228 printf("%s: no report descriptor\n", sc->sc_dev.dv_xname); 229 sc->sc_dying = 1; 230 return; 231 } 232 233 sc->sc_repdesc = desc; 234 sc->sc_repdesc_size = size; 235 236 uha.uaa = uaa; 237 nrepid = uhidev_maxrepid(desc, size); 238 if (nrepid < 0) 239 return; 240 printf("%s: iclass %d/%d", sc->sc_dev.dv_xname, 241 id->bInterfaceClass, id->bInterfaceSubClass); 242 if (nrepid > 0) 243 printf(", %d report id%s", nrepid, 244 nrepid > 1 ? "s" : ""); 245 printf("\n"); 246 nrepid++; 247 sc->sc_subdevs = malloc(nrepid * sizeof(struct device *), 248 M_USBDEV, M_NOWAIT | M_ZERO); 249 if (sc->sc_subdevs == NULL) { 250 printf("%s: no memory\n", sc->sc_dev.dv_xname); 251 return; 252 } 253 sc->sc_nrepid = nrepid; 254 sc->sc_isize = 0; 255 256 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 257 &sc->sc_dev); 258 259 for (repid = 0; repid < nrepid; repid++) { 260 repsz = hid_report_size(desc, size, hid_input, repid); 261 DPRINTF(("uhidev_match: repid=%d, repsz=%d\n", repid, repsz)); 262 repsizes[repid] = repsz; 263 if (repsz > 0) { 264 if (repsz > sc->sc_isize) 265 sc->sc_isize = repsz; 266 } 267 } 268 sc->sc_isize += nrepid != 1; /* space for report ID */ 269 DPRINTF(("uhidev_attach: isize=%d\n", sc->sc_isize)); 270 271 uha.parent = sc; 272 for (repid = 0; repid < nrepid; repid++) { 273 DPRINTF(("uhidev_match: try repid=%d\n", repid)); 274 if (hid_report_size(desc, size, hid_input, repid) == 0 && 275 hid_report_size(desc, size, hid_output, repid) == 0 && 276 hid_report_size(desc, size, hid_feature, repid) == 0) { 277 ; /* already NULL in sc->sc_subdevs[repid] */ 278 } else { 279 uha.reportid = repid; 280 dev = (struct uhidev *)config_found_sm(self, &uha, 281 uhidevprint, uhidevsubmatch); 282 sc->sc_subdevs[repid] = dev; 283 if (dev != NULL) { 284 dev->sc_in_rep_size = repsizes[repid]; 285 #ifdef DIAGNOSTIC 286 DPRINTF(("uhidev_match: repid=%d dev=%p\n", 287 repid, dev)); 288 if (dev->sc_intr == NULL) { 289 printf("%s: sc_intr == NULL\n", 290 sc->sc_dev.dv_xname); 291 return; 292 } 293 #endif 294 } 295 } 296 } 297 } 298 299 int 300 uhidev_maxrepid(void *buf, int len) 301 { 302 struct hid_data *d; 303 struct hid_item h; 304 int maxid; 305 306 maxid = -1; 307 h.report_ID = 0; 308 for (d = hid_start_parse(buf, len, hid_none); hid_get_item(d, &h); ) 309 if (h.report_ID > maxid) 310 maxid = h.report_ID; 311 hid_end_parse(d); 312 return (maxid); 313 } 314 315 int 316 uhidevprint(void *aux, const char *pnp) 317 { 318 struct uhidev_attach_arg *uha = aux; 319 320 if (pnp) 321 printf("uhid at %s", pnp); 322 if (uha->reportid != 0) 323 printf(" reportid %d", uha->reportid); 324 return (UNCONF); 325 } 326 327 int uhidevsubmatch(struct device *parent, void *match, void *aux) 328 { 329 struct uhidev_attach_arg *uha = aux; 330 struct cfdata *cf = match; 331 332 if (cf->uhidevcf_reportid != UHIDEV_UNK_REPORTID && 333 cf->uhidevcf_reportid != uha->reportid) 334 return (0); 335 if (cf->uhidevcf_reportid == uha->reportid) 336 uha->matchlvl = UMATCH_VENDOR_PRODUCT; 337 else 338 uha->matchlvl = 0; 339 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 340 } 341 342 int 343 uhidev_activate(struct device *self, enum devact act) 344 { 345 struct uhidev_softc *sc = (struct uhidev_softc *)self; 346 int i, rv = 0; 347 348 switch (act) { 349 case DVACT_ACTIVATE: 350 break; 351 352 case DVACT_DEACTIVATE: 353 for (i = 0; i < sc->sc_nrepid; i++) 354 if (sc->sc_subdevs[i] != NULL) 355 rv |= config_deactivate( 356 &sc->sc_subdevs[i]->sc_dev); 357 sc->sc_dying = 1; 358 break; 359 } 360 return (rv); 361 } 362 363 int 364 uhidev_detach(struct device *self, int flags) 365 { 366 struct uhidev_softc *sc = (struct uhidev_softc *)self; 367 int i, rv; 368 369 DPRINTF(("uhidev_detach: sc=%p flags=%d\n", sc, flags)); 370 371 sc->sc_dying = 1; 372 if (sc->sc_ipipe != NULL) 373 usbd_abort_pipe(sc->sc_ipipe); 374 375 if (sc->sc_repdesc != NULL) 376 free(sc->sc_repdesc, M_USBDEV); 377 378 rv = 0; 379 for (i = 0; i < sc->sc_nrepid; i++) { 380 if (sc->sc_subdevs[i] != NULL) { 381 rv |= config_detach(&sc->sc_subdevs[i]->sc_dev, flags); 382 sc->sc_subdevs[i] = NULL; 383 } 384 } 385 386 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 387 &sc->sc_dev); 388 389 return (rv); 390 } 391 392 void 393 uhidev_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 394 { 395 struct uhidev_softc *sc = addr; 396 struct uhidev *scd; 397 u_char *p; 398 u_int rep; 399 u_int32_t cc; 400 401 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL); 402 403 #ifdef UHIDEV_DEBUG 404 if (uhidevdebug > 5) { 405 u_int32_t i; 406 407 DPRINTF(("uhidev_intr: status=%d cc=%d\n", status, cc)); 408 DPRINTF(("uhidev_intr: data =")); 409 for (i = 0; i < cc; i++) 410 DPRINTF((" %02x", sc->sc_ibuf[i])); 411 DPRINTF(("\n")); 412 } 413 #endif 414 415 if (status == USBD_CANCELLED) 416 return; 417 418 if (status != USBD_NORMAL_COMPLETION) { 419 DPRINTF(("%s: interrupt status=%d\n", sc->sc_dev.dv_xname, 420 status)); 421 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 422 return; 423 } 424 425 p = sc->sc_ibuf; 426 if (sc->sc_nrepid != 1) 427 rep = *p++, cc--; 428 else 429 rep = 0; 430 if (rep >= sc->sc_nrepid) { 431 printf("uhidev_intr: bad repid %d\n", rep); 432 return; 433 } 434 scd = sc->sc_subdevs[rep]; 435 DPRINTFN(5,("uhidev_intr: rep=%d, scd=%p state=0x%x\n", 436 rep, scd, scd ? scd->sc_state : 0)); 437 if (scd == NULL || !(scd->sc_state & UHIDEV_OPEN)) 438 return; 439 #ifdef UHIDEV_DEBUG 440 if (scd->sc_in_rep_size != cc) 441 printf("%s: bad input length %d != %d\n",sc->sc_dev.dv_xname, 442 scd->sc_in_rep_size, cc); 443 #endif 444 scd->sc_intr(scd, p, cc); 445 } 446 447 void 448 uhidev_get_report_desc(struct uhidev_softc *sc, void **desc, int *size) 449 { 450 *desc = sc->sc_repdesc; 451 *size = sc->sc_repdesc_size; 452 } 453 454 int 455 uhidev_open(struct uhidev *scd) 456 { 457 struct uhidev_softc *sc = scd->sc_parent; 458 usbd_status err; 459 int error; 460 461 DPRINTF(("uhidev_open: open pipe, state=%d refcnt=%d\n", 462 scd->sc_state, sc->sc_refcnt)); 463 464 if (scd->sc_state & UHIDEV_OPEN) 465 return (EBUSY); 466 scd->sc_state |= UHIDEV_OPEN; 467 if (sc->sc_refcnt++) 468 return (0); 469 470 if (sc->sc_isize == 0) 471 return (0); 472 473 sc->sc_ibuf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK); 474 475 /* Set up input interrupt pipe. */ 476 DPRINTF(("uhidev_open: isize=%d, ep=0x%02x\n", sc->sc_isize, 477 sc->sc_iep_addr)); 478 479 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_iep_addr, 480 USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_ibuf, 481 sc->sc_isize, uhidev_intr, USBD_DEFAULT_INTERVAL); 482 if (err != USBD_NORMAL_COMPLETION) { 483 DPRINTF(("uhidopen: usbd_open_pipe_intr failed, " 484 "error=%d\n", err)); 485 error = EIO; 486 goto out1; 487 } 488 489 DPRINTF(("uhidev_open: sc->sc_ipipe=%p\n", sc->sc_ipipe)); 490 491 sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev); 492 if (sc->sc_ixfer == NULL) { 493 DPRINTF(("uhidev_open: couldn't allocate an xfer\n")); 494 error = ENOMEM; 495 goto out1; // xxxx 496 } 497 498 /* 499 * Set up output interrupt pipe if an output interrupt endpoint 500 * exists. 501 */ 502 if (sc->sc_oep_addr != -1) { 503 DPRINTF(("uhidev_open: oep=0x%02x\n", sc->sc_oep_addr)); 504 505 err = usbd_open_pipe(sc->sc_iface, sc->sc_oep_addr, 506 0, &sc->sc_opipe); 507 508 if (err != USBD_NORMAL_COMPLETION) { 509 DPRINTF(("uhidev_open: usbd_open_pipe failed, " 510 "error=%d\n", err)); 511 error = EIO; 512 goto out2; 513 } 514 DPRINTF(("uhidev_open: sc->sc_opipe=%p\n", sc->sc_opipe)); 515 516 sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev); 517 if (sc->sc_oxfer == NULL) { 518 DPRINTF(("uhidev_open: couldn't allocate an xfer\n")); 519 error = ENOMEM; 520 goto out3; 521 } 522 523 sc->sc_owxfer = usbd_alloc_xfer(sc->sc_udev); 524 if (sc->sc_owxfer == NULL) { 525 DPRINTF(("uhidev_open: couldn't allocate owxfer\n")); 526 error = ENOMEM; 527 goto out3; 528 } 529 } 530 531 return (0); 532 533 out3: 534 /* Abort output pipe */ 535 usbd_close_pipe(sc->sc_opipe); 536 out2: 537 /* Abort input pipe */ 538 usbd_close_pipe(sc->sc_ipipe); 539 out1: 540 DPRINTF(("uhidev_open: failed in someway")); 541 free(sc->sc_ibuf, M_USBDEV); 542 scd->sc_state &= ~UHIDEV_OPEN; 543 sc->sc_refcnt = 0; 544 sc->sc_ipipe = NULL; 545 sc->sc_opipe = NULL; 546 if (sc->sc_oxfer != NULL) { 547 usbd_free_xfer(sc->sc_oxfer); 548 sc->sc_oxfer = NULL; 549 } 550 if (sc->sc_owxfer != NULL) { 551 usbd_free_xfer(sc->sc_owxfer); 552 sc->sc_owxfer = NULL; 553 } 554 return (error); 555 } 556 557 void 558 uhidev_close(struct uhidev *scd) 559 { 560 struct uhidev_softc *sc = scd->sc_parent; 561 562 if (!(scd->sc_state & UHIDEV_OPEN)) 563 return; 564 scd->sc_state &= ~UHIDEV_OPEN; 565 if (--sc->sc_refcnt) 566 return; 567 DPRINTF(("uhidev_close: close pipe\n")); 568 569 if (sc->sc_oxfer != NULL) 570 usbd_free_xfer(sc->sc_oxfer); 571 572 if (sc->sc_owxfer != NULL) 573 usbd_free_xfer(sc->sc_owxfer); 574 575 /* Disable interrupts. */ 576 if (sc->sc_opipe != NULL) { 577 usbd_abort_pipe(sc->sc_opipe); 578 usbd_close_pipe(sc->sc_opipe); 579 sc->sc_opipe = NULL; 580 } 581 582 if (sc->sc_ipipe != NULL) { 583 usbd_abort_pipe(sc->sc_ipipe); 584 usbd_close_pipe(sc->sc_ipipe); 585 sc->sc_ipipe = NULL; 586 } 587 588 if (sc->sc_ibuf != NULL) { 589 free(sc->sc_ibuf, M_USBDEV); 590 sc->sc_ibuf = NULL; 591 } 592 } 593 594 usbd_status 595 uhidev_set_report(struct uhidev *scd, int type, void *data, int len) 596 { 597 char *buf; 598 usbd_status retstat; 599 600 if (scd->sc_report_id == 0) 601 return usbd_set_report(scd->sc_parent->sc_iface, type, 602 scd->sc_report_id, data, len); 603 604 buf = malloc(len + 1, M_TEMP, M_WAITOK); 605 buf[0] = scd->sc_report_id; 606 memcpy(buf+1, data, len); 607 608 retstat = usbd_set_report(scd->sc_parent->sc_iface, type, 609 scd->sc_report_id, data, len + 1); 610 611 free(buf, M_TEMP); 612 613 return retstat; 614 } 615 616 void 617 uhidev_set_report_async(struct uhidev *scd, int type, void *data, int len) 618 { 619 /* XXX */ 620 char buf[100]; 621 if (scd->sc_report_id) { 622 buf[0] = scd->sc_report_id; 623 memcpy(buf+1, data, len); 624 len++; 625 data = buf; 626 } 627 628 usbd_set_report_async(scd->sc_parent->sc_iface, type, 629 scd->sc_report_id, data, len); 630 } 631 632 usbd_status 633 uhidev_get_report(struct uhidev *scd, int type, void *data, int len) 634 { 635 return usbd_get_report(scd->sc_parent->sc_iface, type, 636 scd->sc_report_id, data, len); 637 } 638 639 usbd_status 640 uhidev_write(struct uhidev_softc *sc, void *data, int len) 641 { 642 643 DPRINTF(("uhidev_write: data=%p, len=%d\n", data, len)); 644 645 if (sc->sc_opipe == NULL) 646 return USBD_INVAL; 647 648 #ifdef UHIDEV_DEBUG 649 if (uhidevdebug > 50) { 650 651 u_int32_t i; 652 u_int8_t *d = data; 653 654 DPRINTF(("uhidev_write: data =")); 655 for (i = 0; i < len; i++) 656 DPRINTF((" %02x", d[i])); 657 DPRINTF(("\n")); 658 } 659 #endif 660 return usbd_intr_transfer(sc->sc_owxfer, sc->sc_opipe, 0, 661 USBD_NO_TIMEOUT, data, &len, "uhidevwi"); 662 } 663