drivers/hid/usbhid/hid-core.c

   1 /*
   2  *  USB HID support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2007 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/slab.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/list.h>
  22 #include <linux/mm.h>
  23 #include <linux/smp_lock.h>
  24 #include <linux/spinlock.h>
  25 #include <asm/unaligned.h>
  26 #include <asm/byteorder.h>
  27 #include <linux/input.h>
  28 #include <linux/wait.h>
  29
  30 #include <linux/usb.h>
  31
  32 #include <linux/hid.h>
  33 #include <linux/hiddev.h>
  34 #include <linux/hid-debug.h>
  35 #include <linux/hidraw.h>
  36 #include "usbhid.h"
  37
  38 /*
  39  * Version Information
  40  */
  41
  42 #define DRIVER_VERSION "v2.6"
  43 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
  44 #define DRIVER_DESC "USB HID core driver"
  45 #define DRIVER_LICENSE "GPL"
  46
  47 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
  48                                 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
  49 /*
  50  * Module parameters.
  51  */
  52
  53 static unsigned int hid_mousepoll_interval;
  54 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
  55 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
  56
  57 /* Quirks specified at module load time */
  58 static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
  59 module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
  60 MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
  61                 " quirks=vendorID:productID:quirks"
  62                 " where vendorID, productID, and quirks are all in"
  63                 " 0x-prefixed hex");
  64 static char *rdesc_quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
  65 module_param_array_named(rdesc_quirks, rdesc_quirks_param, charp, NULL, 0444);
  66 MODULE_PARM_DESC(rdesc_quirks, "Add/modify report descriptor quirks by specifying "
  67                 " rdesc_quirks=vendorID:productID:rdesc_quirks"
  68                 " where vendorID, productID, and rdesc_quirks are all in"
  69                 " 0x-prefixed hex");
  70 /*
  71  * Input submission and I/O error handler.
  72  */
  73
  74 static void hid_io_error(struct hid_device *hid);
  75
  76 /* Start up the input URB */
  77 static int hid_start_in(struct hid_device *hid)
  78 {
  79         unsigned long flags;
  80         int rc = 0;
  81         struct usbhid_device *usbhid = hid->driver_data;
  82
  83         spin_lock_irqsave(&usbhid->inlock, flags);
  84         if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
  85                         !test_bit(HID_DISCONNECTED, &usbhid->iofl) &&
  86                         !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
  87                 rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
  88                 if (rc != 0)
  89                         clear_bit(HID_IN_RUNNING, &usbhid->iofl);
  90         }
  91         spin_unlock_irqrestore(&usbhid->inlock, flags);
  92         return rc;
  93 }
  94
  95 /* I/O retry timer routine */
  96 static void hid_retry_timeout(unsigned long _hid)
  97 {
  98         struct hid_device *hid = (struct hid_device *) _hid;
  99         struct usbhid_device *usbhid = hid->driver_data;
 100
 101         dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
 102         if (hid_start_in(hid))
 103                 hid_io_error(hid);
 104 }
 105
 106 /* Workqueue routine to reset the device or clear a halt */
 107 static void hid_reset(struct work_struct *work)
 108 {
 109         struct usbhid_device *usbhid =
 110                 container_of(work, struct usbhid_device, reset_work);
 111         struct hid_device *hid = usbhid->hid;
 112         int rc_lock, rc = 0;
 113
 114         if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {
 115                 dev_dbg(&usbhid->intf->dev, "clear halt\n");
 116                 rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);
 117                 clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
 118                 hid_start_in(hid);
 119         }
 120
 121         else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {
 122                 dev_dbg(&usbhid->intf->dev, "resetting device\n");
 123                 rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);
 124                 if (rc_lock >= 0) {
 125                         rc = usb_reset_device(hid_to_usb_dev(hid));
 126                         if (rc_lock)
 127                                 usb_unlock_device(hid_to_usb_dev(hid));
 128                 }
 129                 clear_bit(HID_RESET_PENDING, &usbhid->iofl);
 130         }
 131
 132         switch (rc) {
 133         case 0:
 134                 if (!test_bit(HID_IN_RUNNING, &usbhid->iofl))
 135                         hid_io_error(hid);
 136                 break;
 137         default:
 138                 err_hid("can't reset device, %s-%s/input%d, status %d",
 139                                 hid_to_usb_dev(hid)->bus->bus_name,
 140                                 hid_to_usb_dev(hid)->devpath,
 141                                 usbhid->ifnum, rc);
 142                 /* FALLTHROUGH */
 143         case -EHOSTUNREACH:
 144         case -ENODEV:
 145         case -EINTR:
 146                 break;
 147         }
 148 }
 149
 150 /* Main I/O error handler */
 151 static void hid_io_error(struct hid_device *hid)
 152 {
 153         unsigned long flags;
 154         struct usbhid_device *usbhid = hid->driver_data;
 155
 156         spin_lock_irqsave(&usbhid->inlock, flags);
 157
 158         /* Stop when disconnected */
 159         if (test_bit(HID_DISCONNECTED, &usbhid->iofl))
 160                 goto done;
 161
 162         /* If it has been a while since the last error, we'll assume
 163          * this a brand new error and reset the retry timeout. */
 164         if (time_after(jiffies, usbhid->stop_retry + HZ/2))
 165                 usbhid->retry_delay = 0;
 166
 167         /* When an error occurs, retry at increasing intervals */
 168         if (usbhid->retry_delay == 0) {
 169                 usbhid->retry_delay = 13;       /* Then 26, 52, 104, 104, ... */
 170                 usbhid->stop_retry = jiffies + msecs_to_jiffies(1000);
 171         } else if (usbhid->retry_delay < 100)
 172                 usbhid->retry_delay *= 2;
 173
 174         if (time_after(jiffies, usbhid->stop_retry)) {
 175
 176                 /* Retries failed, so do a port reset */
 177                 if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
 178                         schedule_work(&usbhid->reset_work);
 179                         goto done;
 180                 }
 181         }
 182
 183         mod_timer(&usbhid->io_retry,
 184                         jiffies + msecs_to_jiffies(usbhid->retry_delay));
 185 done:
 186         spin_unlock_irqrestore(&usbhid->inlock, flags);
 187 }
 188
 189 /*
 190  * Input interrupt completion handler.
 191  */
 192
 193 static void hid_irq_in(struct urb *urb)
 194 {
 195         struct hid_device       *hid = urb->context;
 196         struct usbhid_device    *usbhid = hid->driver_data;
 197         int                     status;
 198
 199         switch (urb->status) {
 200         case 0:                 /* success */
 201                 usbhid->retry_delay = 0;
 202                 hid_input_report(urb->context, HID_INPUT_REPORT,
 203                                  urb->transfer_buffer,
 204                                  urb->actual_length, 1);
 205                 break;
 206         case -EPIPE:            /* stall */
 207                 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 208                 set_bit(HID_CLEAR_HALT, &usbhid->iofl);
 209                 schedule_work(&usbhid->reset_work);
 210                 return;
 211         case -ECONNRESET:       /* unlink */
 212         case -ENOENT:
 213         case -ESHUTDOWN:        /* unplug */
 214                 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 215                 return;
 216         case -EILSEQ:           /* protocol error or unplug */
 217         case -EPROTO:           /* protocol error or unplug */
 218         case -ETIME:            /* protocol error or unplug */
 219         case -ETIMEDOUT:        /* Should never happen, but... */
 220                 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 221                 hid_io_error(hid);
 222                 return;
 223         default:                /* error */
 224                 warn("input irq status %d received", urb->status);
 225         }
 226
 227         status = usb_submit_urb(urb, GFP_ATOMIC);
 228         if (status) {
 229                 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 230                 if (status != -EPERM) {
 231                         err_hid("can't resubmit intr, %s-%s/input%d, status %d",
 232                                         hid_to_usb_dev(hid)->bus->bus_name,
 233                                         hid_to_usb_dev(hid)->devpath,
 234                                         usbhid->ifnum, status);
 235                         hid_io_error(hid);
 236                 }
 237         }
 238 }
 239
 240 static int hid_submit_out(struct hid_device *hid)
 241 {
 242         struct hid_report *report;
 243         struct usbhid_device *usbhid = hid->driver_data;
 244
 245         report = usbhid->out[usbhid->outtail];
 246
 247         hid_output_report(report, usbhid->outbuf);
 248         usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
 249         usbhid->urbout->dev = hid_to_usb_dev(hid);
 250
 251         dbg_hid("submitting out urb\n");
 252
 253         if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
 254                 err_hid("usb_submit_urb(out) failed");
 255                 return -1;
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int hid_submit_ctrl(struct hid_device *hid)
 262 {
 263         struct hid_report *report;
 264         unsigned char dir;
 265         int len;
 266         struct usbhid_device *usbhid = hid->driver_data;
 267
 268         report = usbhid->ctrl[usbhid->ctrltail].report;
 269         dir = usbhid->ctrl[usbhid->ctrltail].dir;
 270
 271         len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
 272         if (dir == USB_DIR_OUT) {
 273                 hid_output_report(report, usbhid->ctrlbuf);
 274                 usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
 275                 usbhid->urbctrl->transfer_buffer_length = len;
 276         } else {
 277                 int maxpacket, padlen;
 278
 279                 usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 280                 maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
 281                 if (maxpacket > 0) {
 282                         padlen = DIV_ROUND_UP(len, maxpacket);
 283                         padlen *= maxpacket;
 284                         if (padlen > usbhid->bufsize)
 285                                 padlen = usbhid->bufsize;
 286                 } else
 287                         padlen = 0;
 288                 usbhid->urbctrl->transfer_buffer_length = padlen;
 289         }
 290         usbhid->urbctrl->dev = hid_to_usb_dev(hid);
 291
 292         usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
 293         usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
 294         usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
 295         usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
 296         usbhid->cr->wLength = cpu_to_le16(len);
 297
 298         dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
 299                 usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
 300                 usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
 301
 302         if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
 303                 err_hid("usb_submit_urb(ctrl) failed");
 304                 return -1;
 305         }
 306
 307         return 0;
 308 }
 309
 310 /*
 311  * Output interrupt completion handler.
 312  */
 313
 314 static void hid_irq_out(struct urb *urb)
 315 {
 316         struct hid_device *hid = urb->context;
 317         struct usbhid_device *usbhid = hid->driver_data;
 318         unsigned long flags;
 319         int unplug = 0;
 320
 321         switch (urb->status) {
 322         case 0:                 /* success */
 323                 break;
 324         case -ESHUTDOWN:        /* unplug */
 325                 unplug = 1;
 326         case -EILSEQ:           /* protocol error or unplug */
 327         case -EPROTO:           /* protocol error or unplug */
 328         case -ECONNRESET:       /* unlink */
 329         case -ENOENT:
 330                 break;
 331         default:                /* error */
 332                 warn("output irq status %d received", urb->status);
 333         }
 334
 335         spin_lock_irqsave(&usbhid->outlock, flags);
 336
 337         if (unplug)
 338                 usbhid->outtail = usbhid->outhead;
 339         else
 340                 usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
 341
 342         if (usbhid->outhead != usbhid->outtail) {
 343                 if (hid_submit_out(hid)) {
 344                         clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
 345                         wake_up(&usbhid->wait);
 346                 }
 347                 spin_unlock_irqrestore(&usbhid->outlock, flags);
 348                 return;
 349         }
 350
 351         clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
 352         spin_unlock_irqrestore(&usbhid->outlock, flags);
 353         wake_up(&usbhid->wait);
 354 }
 355
 356 /*
 357  * Control pipe completion handler.
 358  */
 359
 360 static void hid_ctrl(struct urb *urb)
 361 {
 362         struct hid_device *hid = urb->context;
 363         struct usbhid_device *usbhid = hid->driver_data;
 364         unsigned long flags;
 365         int unplug = 0;
 366
 367         spin_lock_irqsave(&usbhid->ctrllock, flags);
 368
 369         switch (urb->status) {
 370         case 0:                 /* success */
 371                 if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
 372                         hid_input_report(urb->context,
 373                                 usbhid->ctrl[usbhid->ctrltail].report->type,
 374                                 urb->transfer_buffer, urb->actual_length, 0);
 375                 break;
 376         case -ESHUTDOWN:        /* unplug */
 377                 unplug = 1;
 378         case -EILSEQ:           /* protocol error or unplug */
 379         case -EPROTO:           /* protocol error or unplug */
 380         case -ECONNRESET:       /* unlink */
 381         case -ENOENT:
 382         case -EPIPE:            /* report not available */
 383                 break;
 384         default:                /* error */
 385                 warn("ctrl urb status %d received", urb->status);
 386         }
 387
 388         if (unplug)
 389                 usbhid->ctrltail = usbhid->ctrlhead;
 390         else
 391                 usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
 392
 393         if (usbhid->ctrlhead != usbhid->ctrltail) {
 394                 if (hid_submit_ctrl(hid)) {
 395                         clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
 396                         wake_up(&usbhid->wait);
 397                 }
 398                 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 399                 return;
 400         }
 401
 402         clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
 403         spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 404         wake_up(&usbhid->wait);
 405 }
 406
 407 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
 408 {
 409         int head;
 410         unsigned long flags;
 411         struct usbhid_device *usbhid = hid->driver_data;
 412
 413         if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
 414                 return;
 415
 416         if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
 417
 418                 spin_lock_irqsave(&usbhid->outlock, flags);
 419
 420                 if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
 421                         spin_unlock_irqrestore(&usbhid->outlock, flags);
 422                         warn("output queue full");
 423                         return;
 424                 }
 425
 426                 usbhid->out[usbhid->outhead] = report;
 427                 usbhid->outhead = head;
 428
 429                 if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
 430                         if (hid_submit_out(hid))
 431                                 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
 432
 433                 spin_unlock_irqrestore(&usbhid->outlock, flags);
 434                 return;
 435         }
 436
 437         spin_lock_irqsave(&usbhid->ctrllock, flags);
 438
 439         if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
 440                 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 441                 warn("control queue full");
 442                 return;
 443         }
 444
 445         usbhid->ctrl[usbhid->ctrlhead].report = report;
 446         usbhid->ctrl[usbhid->ctrlhead].dir = dir;
 447         usbhid->ctrlhead = head;
 448
 449         if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
 450                 if (hid_submit_ctrl(hid))
 451                         clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
 452
 453         spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 454 }
 455
 456 static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 457 {
 458         struct hid_device *hid = input_get_drvdata(dev);
 459         struct hid_field *field;
 460         int offset;
 461
 462         if (type == EV_FF)
 463                 return input_ff_event(dev, type, code, value);
 464
 465         if (type != EV_LED)
 466                 return -1;
 467
 468         if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
 469                 warn("event field not found");
 470                 return -1;
 471         }
 472
 473         hid_set_field(field, offset, value);
 474         usbhid_submit_report(hid, field->report, USB_DIR_OUT);
 475
 476         return 0;
 477 }
 478
 479 int usbhid_wait_io(struct hid_device *hid)
 480 {
 481         struct usbhid_device *usbhid = hid->driver_data;
 482
 483         if (!wait_event_timeout(usbhid->wait,
 484                                 (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) &&
 485                                 !test_bit(HID_OUT_RUNNING, &usbhid->iofl)),
 486                                         10*HZ)) {
 487                 dbg_hid("timeout waiting for ctrl or out queue to clear\n");
 488                 return -1;
 489         }
 490
 491         return 0;
 492 }
 493
 494 static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
 495 {
 496         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 497                 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
 498                 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
 499 }
 500
 501 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
 502                 unsigned char type, void *buf, int size)
 503 {
 504         int result, retries = 4;
 505
 506         memset(buf, 0, size);
 507
 508         do {
 509                 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 510                                 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
 511                                 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
 512                 retries--;
 513         } while (result < size && retries);
 514         return result;
 515 }
 516
 517 int usbhid_open(struct hid_device *hid)
 518 {
 519         struct usbhid_device *usbhid = hid->driver_data;
 520         int res;
 521
 522         if (!hid->open++) {
 523                 res = usb_autopm_get_interface(usbhid->intf);
 524                 if (res < 0) {
 525                         hid->open--;
 526                         return -EIO;
 527                 }
 528         }
 529         if (hid_start_in(hid))
 530                 hid_io_error(hid);
 531         return 0;
 532 }
 533
 534 void usbhid_close(struct hid_device *hid)
 535 {
 536         struct usbhid_device *usbhid = hid->driver_data;
 537
 538         if (!--hid->open) {
 539                 usb_kill_urb(usbhid->urbin);
 540                 usb_autopm_put_interface(usbhid->intf);
 541         }
 542 }
 543
 544 /*
 545  * Initialize all reports
 546  */
 547
 548 void usbhid_init_reports(struct hid_device *hid)
 549 {
 550         struct hid_report *report;
 551         struct usbhid_device *usbhid = hid->driver_data;
 552         int err, ret;
 553
 554         list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
 555                 usbhid_submit_report(hid, report, USB_DIR_IN);
 556
 557         list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
 558                 usbhid_submit_report(hid, report, USB_DIR_IN);
 559
 560         err = 0;
 561         ret = usbhid_wait_io(hid);
 562         while (ret) {
 563                 err |= ret;
 564                 if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
 565                         usb_kill_urb(usbhid->urbctrl);
 566                 if (test_bit(HID_OUT_RUNNING, &usbhid->iofl))
 567                         usb_kill_urb(usbhid->urbout);
 568                 ret = usbhid_wait_io(hid);
 569         }
 570
 571         if (err)
 572                 warn("timeout initializing reports");
 573 }
 574
 575 /*
 576  * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
 577  */
 578 static int hid_find_field_early(struct hid_device *hid, unsigned int page,
 579     unsigned int hid_code, struct hid_field **pfield)
 580 {
 581         struct hid_report *report;
 582         struct hid_field *field;
 583         struct hid_usage *usage;
 584         int i, j;
 585
 586         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 587                 for (i = 0; i < report->maxfield; i++) {
 588                         field = report->field[i];
 589                         for (j = 0; j < field->maxusage; j++) {
 590                                 usage = &field->usage[j];
 591                                 if ((usage->hid & HID_USAGE_PAGE) == page &&
 592                                     (usage->hid & 0xFFFF) == hid_code) {
 593                                         *pfield = field;
 594                                         return j;
 595                                 }
 596                         }
 597                 }
 598         }
 599         return -1;
 600 }
 601
 602 static void usbhid_set_leds(struct hid_device *hid)
 603 {
 604         struct hid_field *field;
 605         int offset;
 606
 607         if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
 608                 hid_set_field(field, offset, 0);
 609                 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
 610         }
 611 }
 612
 613 /*
 614  * Traverse the supplied list of reports and find the longest
 615  */
 616 static void hid_find_max_report(struct hid_device *hid, unsigned int type,
 617                 unsigned int *max)
 618 {
 619         struct hid_report *report;
 620         unsigned int size;
 621
 622         list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
 623                 size = ((report->size - 1) >> 3) + 1;
 624                 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
 625                         size++;
 626                 if (*max < size)
 627                         *max = size;
 628         }
 629 }
 630
 631 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
 632 {
 633         struct usbhid_device *usbhid = hid->driver_data;
 634
 635         if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma)))
 636                 return -1;
 637         if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma)))
 638                 return -1;
 639         if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma)))
 640                 return -1;
 641         if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma)))
 642                 return -1;
 643
 644         return 0;
 645 }
 646
 647 static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count)
 648 {
 649         struct usbhid_device *usbhid = hid->driver_data;
 650         struct usb_device *dev = hid_to_usb_dev(hid);
 651         struct usb_interface *intf = usbhid->intf;
 652         struct usb_host_interface *interface = intf->cur_altsetting;
 653         int ret;
 654
 655         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 656                 HID_REQ_SET_REPORT,
 657                 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 658                 ((HID_OUTPUT_REPORT + 1) << 8) | *buf,
 659                 interface->desc.bInterfaceNumber, buf + 1, count - 1,
 660                 USB_CTRL_SET_TIMEOUT);
 661
 662         /* count also the report id */
 663         if (ret > 0)
 664                 ret++;
 665
 666         return ret;
 667 }
 668
 669 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
 670 {
 671         struct usbhid_device *usbhid = hid->driver_data;
 672
 673         usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma);
 674         usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma);
 675         usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma);
 676         usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma);
 677 }
 678
 679 /*
 680  * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
 681  * to "operational".  Without this, the ps3 controller will not report any
 682  * events.
 683  */
 684 static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum)
 685 {
 686         int result;
 687         char *buf = kmalloc(18, GFP_KERNEL);
 688
 689         if (!buf)
 690                 return;
 691
 692         result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 693                                  HID_REQ_GET_REPORT,
 694                                  USB_DIR_IN | USB_TYPE_CLASS |
 695                                  USB_RECIP_INTERFACE,
 696                                  (3 << 8) | 0xf2, ifnum, buf, 17,
 697                                  USB_CTRL_GET_TIMEOUT);
 698
 699         if (result < 0)
 700                 err_hid("%s failed: %d\n", __func__, result);
 701
 702         kfree(buf);
 703 }
 704
 705 static int usbhid_start_finish(struct hid_device *hid)
 706 {
 707         struct usb_interface *intf = to_usb_interface(hid->dev.parent);
 708         char path[64], *type;
 709         unsigned int i;
 710
 711         usbhid_init_reports(hid);
 712         hid_dump_device(hid);
 713         if (hid->quirks & HID_QUIRK_RESET_LEDS)
 714                 usbhid_set_leds(hid);
 715
 716         if (!hidinput_connect(hid))
 717                 hid->claimed |= HID_CLAIMED_INPUT;
 718         if (!hiddev_connect(hid))
 719                 hid->claimed |= HID_CLAIMED_HIDDEV;
 720         if (!hidraw_connect(hid))
 721                 hid->claimed |= HID_CLAIMED_HIDRAW;
 722
 723         if (!hid->claimed) {
 724                 printk(KERN_ERR "HID device claimed by neither input, hiddev "
 725                                 "nor hidraw\n");
 726                 return -ENODEV;
 727         }
 728
 729         if ((hid->claimed & HID_CLAIMED_INPUT))
 730                 hid_ff_init(hid);
 731
 732         if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER)
 733                 hid_fixup_sony_ps3_controller(interface_to_usbdev(intf),
 734                         intf->cur_altsetting->desc.bInterfaceNumber);
 735
 736         printk(KERN_INFO);
 737
 738         if (hid->claimed & HID_CLAIMED_INPUT)
 739                 printk("input");
 740         if ((hid->claimed & HID_CLAIMED_INPUT) &&
 741                         ((hid->claimed & HID_CLAIMED_HIDDEV) ||
 742                                 hid->claimed & HID_CLAIMED_HIDRAW))
 743                 printk(",");
 744         if (hid->claimed & HID_CLAIMED_HIDDEV)
 745                 printk("hiddev%d", hid->minor);
 746         if ((hid->claimed & HID_CLAIMED_INPUT) &&
 747                         (hid->claimed & HID_CLAIMED_HIDDEV) &&
 748                         (hid->claimed & HID_CLAIMED_HIDRAW))
 749                 printk(",");
 750         if (hid->claimed & HID_CLAIMED_HIDRAW)
 751                 printk("hidraw%d", ((struct hidraw *)hid->hidraw)->minor);
 752
 753         type = "Device";
 754         for (i = 0; i < hid->maxcollection; i++) {
 755                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
 756                     (hid->collection[i].usage & HID_USAGE_PAGE) ==
 757                                                 HID_UP_GENDESK &&
 758                     (hid->collection[i].usage & 0xffff) <
 759                                                 ARRAY_SIZE(hid_types)) {
 760                         type = hid_types[hid->collection[i].usage & 0xffff];
 761                         break;
 762                 }
 763         }
 764
 765         usb_make_path(interface_to_usbdev(intf), path, 63);
 766
 767         printk(": USB HID v%x.%02x %s [%s] on %s\n",
 768                 hid->version >> 8, hid->version & 0xff, type, hid->name, path);
 769
 770         return 0;
 771 }
 772
 773 static int usbhid_parse(struct hid_device *hid)
 774 {
 775         struct usb_interface *intf = to_usb_interface(hid->dev.parent);
 776         struct usb_host_interface *interface = intf->cur_altsetting;
 777         struct usb_device *dev = interface_to_usbdev (intf);
 778         struct hid_descriptor *hdesc;
 779         u32 quirks = 0;
 780         unsigned int rsize = 0;
 781         char *rdesc;
 782         int ret, n;
 783
 784         quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
 785                         le16_to_cpu(dev->descriptor.idProduct));
 786
 787         /* Many keyboards and mice don't like to be polled for reports,
 788          * so we will always set the HID_QUIRK_NOGET flag for them. */
 789         if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
 790                 if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
 791                         interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
 792                                 quirks |= HID_QUIRK_NOGET;
 793         }
 794
 795         if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
 796             (!interface->desc.bNumEndpoints ||
 797              usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
 798                 dbg_hid("class descriptor not present\n");
 799                 return -ENODEV;
 800         }
 801
 802         hid->version = le16_to_cpu(hdesc->bcdHID);
 803         hid->country = hdesc->bCountryCode;
 804
 805         for (n = 0; n < hdesc->bNumDescriptors; n++)
 806                 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
 807                         rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
 808
 809         if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
 810                 dbg_hid("weird size of report descriptor (%u)\n", rsize);
 811                 return -EINVAL;
 812         }
 813
 814         if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
 815                 dbg_hid("couldn't allocate rdesc memory\n");
 816                 return -ENOMEM;
 817         }
 818
 819         hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
 820
 821         ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber,
 822                         HID_DT_REPORT, rdesc, rsize);
 823         if (ret < 0) {
 824                 dbg_hid("reading report descriptor failed\n");
 825                 kfree(rdesc);
 826                 goto err;
 827         }
 828
 829         usbhid_fixup_report_descriptor(le16_to_cpu(dev->descriptor.idVendor),
 830                         le16_to_cpu(dev->descriptor.idProduct), rdesc,
 831                         rsize, rdesc_quirks_param);
 832
 833         dbg_hid("report descriptor (size %u, read %d) = ", rsize, n);
 834         for (n = 0; n < rsize; n++)
 835                 dbg_hid_line(" %02x", (unsigned char) rdesc[n]);
 836         dbg_hid_line("\n");
 837
 838         ret = hid_parse_report(hid, rdesc, rsize);
 839         kfree(rdesc);
 840         if (ret) {
 841                 dbg_hid("parsing report descriptor failed\n");
 842                 goto err;
 843         }
 844
 845         hid->quirks = quirks;
 846
 847         return 0;
 848 err:
 849         return ret;
 850 }
 851
 852 static int usbhid_start(struct hid_device *hid)
 853 {
 854         struct usb_interface *intf = to_usb_interface(hid->dev.parent);
 855         struct usb_host_interface *interface = intf->cur_altsetting;
 856         struct usb_device *dev = interface_to_usbdev(intf);
 857         struct usbhid_device *usbhid;
 858         unsigned int n, insize = 0;
 859         int ret;
 860
 861         WARN_ON(hid->driver_data);
 862
 863         usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL);
 864         if (usbhid == NULL) {
 865                 ret = -ENOMEM;
 866                 goto err;
 867         }
 868
 869         hid->driver_data = usbhid;
 870         usbhid->hid = hid;
 871
 872         usbhid->bufsize = HID_MIN_BUFFER_SIZE;
 873         hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize);
 874         hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize);
 875         hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize);
 876
 877         if (usbhid->bufsize > HID_MAX_BUFFER_SIZE)
 878                 usbhid->bufsize = HID_MAX_BUFFER_SIZE;
 879
 880         hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
 881
 882         if (insize > HID_MAX_BUFFER_SIZE)
 883                 insize = HID_MAX_BUFFER_SIZE;
 884
 885         if (hid_alloc_buffers(dev, hid)) {
 886                 ret = -ENOMEM;
 887                 goto fail;
 888         }
 889
 890         for (n = 0; n < interface->desc.bNumEndpoints; n++) {
 891                 struct usb_endpoint_descriptor *endpoint;
 892                 int pipe;
 893                 int interval;
 894
 895                 endpoint = &interface->endpoint[n].desc;
 896                 if ((endpoint->bmAttributes & 3) != 3)          /* Not an interrupt endpoint */
 897                         continue;
 898
 899                 interval = endpoint->bInterval;
 900
 901                 /* Some vendors give fullspeed interval on highspeed devides */
 902                 if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL &&
 903                     dev->speed == USB_SPEED_HIGH) {
 904                         interval = fls(endpoint->bInterval*8);
 905                         printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n",
 906                                hid->name, endpoint->bInterval, interval);
 907                 }
 908
 909                 /* Change the polling interval of mice. */
 910                 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
 911                         interval = hid_mousepoll_interval;
 912
 913                 ret = -ENOMEM;
 914                 if (usb_endpoint_dir_in(endpoint)) {
 915                         if (usbhid->urbin)
 916                                 continue;
 917                         if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
 918                                 goto fail;
 919                         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 920                         usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize,
 921                                          hid_irq_in, hid, interval);
 922                         usbhid->urbin->transfer_dma = usbhid->inbuf_dma;
 923                         usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 924                 } else {
 925                         if (usbhid->urbout)
 926                                 continue;
 927                         if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
 928                                 goto fail;
 929                         pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
 930                         usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0,
 931                                          hid_irq_out, hid, interval);
 932                         usbhid->urbout->transfer_dma = usbhid->outbuf_dma;
 933                         usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 934                 }
 935         }
 936
 937         if (!usbhid->urbin) {
 938                 err_hid("couldn't find an input interrupt endpoint");
 939                 ret = -ENODEV;
 940                 goto fail;
 941         }
 942
 943         init_waitqueue_head(&usbhid->wait);
 944         INIT_WORK(&usbhid->reset_work, hid_reset);
 945         setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
 946
 947         spin_lock_init(&usbhid->inlock);
 948         spin_lock_init(&usbhid->outlock);
 949         spin_lock_init(&usbhid->ctrllock);
 950
 951         usbhid->intf = intf;
 952         usbhid->ifnum = interface->desc.bInterfaceNumber;
 953
 954         usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
 955         if (!usbhid->urbctrl) {
 956                 ret = -ENOMEM;
 957                 goto fail;
 958         }
 959
 960         usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr,
 961                              usbhid->ctrlbuf, 1, hid_ctrl, hid);
 962         usbhid->urbctrl->setup_dma = usbhid->cr_dma;
 963         usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma;
 964         usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
 965
 966         ret = usbhid_start_finish(hid);
 967         if (ret)
 968                 goto fail;
 969
 970         return 0;
 971
 972 fail:
 973         usb_free_urb(usbhid->urbin);
 974         usb_free_urb(usbhid->urbout);
 975         usb_free_urb(usbhid->urbctrl);
 976         hid_free_buffers(dev, hid);
 977         kfree(usbhid);
 978 err:
 979         return ret;
 980 }
 981
 982 static void usbhid_stop(struct hid_device *hid)
 983 {
 984         struct usbhid_device *usbhid = hid->driver_data;
 985
 986         if (WARN_ON(!usbhid))
 987                 return;
 988
 989         spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
 990         set_bit(HID_DISCONNECTED, &usbhid->iofl);
 991         spin_unlock_irq(&usbhid->inlock);
 992         usb_kill_urb(usbhid->urbin);
 993         usb_kill_urb(usbhid->urbout);
 994         usb_kill_urb(usbhid->urbctrl);
 995
 996         del_timer_sync(&usbhid->io_retry);
 997         cancel_work_sync(&usbhid->reset_work);
 998
 999         if (hid->claimed & HID_CLAIMED_INPUT)
1000                 hidinput_disconnect(hid);
1001         if (hid->claimed & HID_CLAIMED_HIDDEV)
1002                 hiddev_disconnect(hid);
1003         if (hid->claimed & HID_CLAIMED_HIDRAW)
1004                 hidraw_disconnect(hid);
1005
1006         hid->claimed = 0;
1007
1008         usb_free_urb(usbhid->urbin);
1009         usb_free_urb(usbhid->urbctrl);
1010         usb_free_urb(usbhid->urbout);
1011
1012         hid_free_buffers(hid_to_usb_dev(hid), hid);
1013         kfree(usbhid);
1014         hid->driver_data = NULL;
1015 }
1016
1017 static struct hid_ll_driver usb_hid_driver = {
1018         .parse = usbhid_parse,
1019         .start = usbhid_start,
1020         .stop = usbhid_stop,
1021         .open = usbhid_open,
1022         .close = usbhid_close,
1023         .hidinput_input_event = usb_hidinput_input_event,
1024 };
1025
1026 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
1027 {
1028         struct usb_device *dev = interface_to_usbdev(intf);
1029         struct hid_device *hid;
1030         size_t len;
1031         int ret;
1032
1033         dbg_hid("HID probe called for ifnum %d\n",
1034                         intf->altsetting->desc.bInterfaceNumber);
1035
1036         hid = hid_allocate_device();
1037         if (IS_ERR(hid))
1038                 return PTR_ERR(hid);
1039
1040         usb_set_intfdata(intf, hid);
1041         hid->ll_driver = &usb_hid_driver;
1042         hid->hid_output_raw_report = usbhid_output_raw_report;
1043 #ifdef CONFIG_USB_HIDDEV
1044         hid->hiddev_hid_event = hiddev_hid_event;
1045         hid->hiddev_report_event = hiddev_report_event;
1046 #endif
1047         hid->dev.parent = &intf->dev;
1048         hid->bus = BUS_USB;
1049         hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
1050         hid->product = le16_to_cpu(dev->descriptor.idProduct);
1051         hid->name[0] = 0;
1052
1053         if (dev->manufacturer)
1054                 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
1055
1056         if (dev->product) {
1057                 if (dev->manufacturer)
1058                         strlcat(hid->name, " ", sizeof(hid->name));
1059                 strlcat(hid->name, dev->product, sizeof(hid->name));
1060         }
1061
1062         if (!strlen(hid->name))
1063                 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
1064                          le16_to_cpu(dev->descriptor.idVendor),
1065                          le16_to_cpu(dev->descriptor.idProduct));
1066
1067         usb_make_path(dev, hid->phys, sizeof(hid->phys));
1068         strlcat(hid->phys, "/input", sizeof(hid->phys));
1069         len = strlen(hid->phys);
1070         if (len < sizeof(hid->phys) - 1)
1071                 snprintf(hid->phys + len, sizeof(hid->phys) - len,
1072                          "%d", intf->altsetting[0].desc.bInterfaceNumber);
1073
1074         if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1075                 hid->uniq[0] = 0;
1076
1077         ret = hid_add_device(hid);
1078         if (ret) {
1079                 if (ret != -ENODEV)
1080                         dev_err(&intf->dev, "can't add hid device: %d\n", ret);
1081                 goto err;
1082         }
1083
1084         return 0;
1085 err:
1086         hid_destroy_device(hid);
1087         return ret;
1088 }
1089
1090 static void hid_disconnect(struct usb_interface *intf)
1091 {
1092         struct hid_device *hid = usb_get_intfdata(intf);
1093
1094         if (WARN_ON(!hid))
1095                 return;
1096
1097         hid_destroy_device(hid);
1098 }
1099
1100 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1101 {
1102         struct hid_device *hid = usb_get_intfdata (intf);
1103         struct usbhid_device *usbhid = hid->driver_data;
1104
1105         spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
1106         set_bit(HID_SUSPENDED, &usbhid->iofl);
1107         spin_unlock_irq(&usbhid->inlock);
1108         del_timer(&usbhid->io_retry);
1109         usb_kill_urb(usbhid->urbin);
1110         dev_dbg(&intf->dev, "suspend\n");
1111         return 0;
1112 }
1113
1114 static int hid_resume(struct usb_interface *intf)
1115 {
1116         struct hid_device *hid = usb_get_intfdata (intf);
1117         struct usbhid_device *usbhid = hid->driver_data;
1118         int status;
1119
1120         clear_bit(HID_SUSPENDED, &usbhid->iofl);
1121         usbhid->retry_delay = 0;
1122         status = hid_start_in(hid);
1123         dev_dbg(&intf->dev, "resume status %d\n", status);
1124         return status;
1125 }
1126
1127 /* Treat USB reset pretty much the same as suspend/resume */
1128 static int hid_pre_reset(struct usb_interface *intf)
1129 {
1130         /* FIXME: What if the interface is already suspended? */
1131         hid_suspend(intf, PMSG_ON);
1132         return 0;
1133 }
1134
1135 /* Same routine used for post_reset and reset_resume */
1136 static int hid_post_reset(struct usb_interface *intf)
1137 {
1138         struct usb_device *dev = interface_to_usbdev (intf);
1139
1140         hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
1141         /* FIXME: Any more reinitialization needed? */
1142
1143         return hid_resume(intf);
1144 }
1145
1146 static struct usb_device_id hid_usb_ids [] = {
1147         { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1148                 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1149         { }                                             /* Terminating entry */
1150 };
1151
1152 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1153
1154 static struct usb_driver hid_driver = {
1155         .name =         "usbhid",
1156         .probe =        hid_probe,
1157         .disconnect =   hid_disconnect,
1158         .suspend =      hid_suspend,
1159         .resume =       hid_resume,
1160         .reset_resume = hid_post_reset,
1161         .pre_reset =    hid_pre_reset,
1162         .post_reset =   hid_post_reset,
1163         .id_table =     hid_usb_ids,
1164         .supports_autosuspend = 1,
1165 };
1166
1167 static const struct hid_device_id hid_usb_table[] = {
1168         { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) },
1169         { }
1170 };
1171
1172 static struct hid_driver hid_usb_driver = {
1173         .name = "generic-usb",
1174         .id_table = hid_usb_table,
1175 };
1176
1177 static int __init hid_init(void)
1178 {
1179         int retval;
1180         retval = hid_register_driver(&hid_usb_driver);
1181         if (retval)
1182                 goto hid_register_fail;
1183         retval = usbhid_quirks_init(quirks_param);
1184         if (retval)
1185                 goto usbhid_quirks_init_fail;
1186         retval = hiddev_init();
1187         if (retval)
1188                 goto hiddev_init_fail;
1189         retval = usb_register(&hid_driver);
1190         if (retval)
1191                 goto usb_register_fail;
1192         info(DRIVER_VERSION ":" DRIVER_DESC);
1193
1194         return 0;
1195 usb_register_fail:
1196         hiddev_exit();
1197 hiddev_init_fail:
1198         usbhid_quirks_exit();
1199 usbhid_quirks_init_fail:
1200         hid_unregister_driver(&hid_usb_driver);
1201 hid_register_fail:
1202         return retval;
1203 }
1204
1205 static void __exit hid_exit(void)
1206 {
1207         usb_deregister(&hid_driver);
1208         hiddev_exit();
1209         usbhid_quirks_exit();
1210         hid_unregister_driver(&hid_usb_driver);
1211 }
1212
1213 module_init(hid_init);
1214 module_exit(hid_exit);
1215
1216 MODULE_AUTHOR(DRIVER_AUTHOR);
1217 MODULE_DESCRIPTION(DRIVER_DESC);
1218 MODULE_LICENSE(DRIVER_LICENSE);