drivers/usb/input/aiptek.c

   1 /*
   2  *  Native support for the Aiptek HyperPen USB Tablets
   3  *  (4000U/5000U/6000U/8000U/12000U)
   4  *
   5  *  Copyright (c) 2001      Chris Atenasio   <chris@crud.net>
   6  *  Copyright (c) 2002-2004 Bryan W. Headley <bwheadley@earthlink.net>
   7  *
   8  *  based on wacom.c by
   9  *     Vojtech Pavlik      <vojtech@suse.cz>
  10  *     Andreas Bach Aaen   <abach@stofanet.dk>
  11  *     Clifford Wolf       <clifford@clifford.at>
  12  *     Sam Mosel           <sam.mosel@computer.org>
  13  *     James E. Blair      <corvus@gnu.org>
  14  *     Daniel Egger        <egger@suse.de>
  15  *
  16  *  Many thanks to Oliver Kuechemann for his support.
  17  *
  18  *  ChangeLog:
  19  *      v0.1 - Initial release
  20  *      v0.2 - Hack to get around fake event 28's. (Bryan W. Headley)
  21  *      v0.3 - Make URB dynamic (Bryan W. Headley, Jun-8-2002)
  22  *             Released to Linux 2.4.19 and 2.5.x
  23  *      v0.4 - Rewrote substantial portions of the code to deal with
  24  *             corrected control sequences, timing, dynamic configuration,
  25  *             support of 6000U - 12000U, procfs, and macro key support
  26  *             (Jan-1-2003 - Feb-5-2003, Bryan W. Headley)
  27  *      v1.0 - Added support for diagnostic messages, count of messages
  28  *             received from URB - Mar-8-2003, Bryan W. Headley
  29  *      v1.1 - added support for tablet resolution, changed DV and proximity
  30  *             some corrections - Jun-22-2003, martin schneebacher
  31  *           - Added support for the sysfs interface, deprecating the
  32  *             procfs interface for 2.5.x kernel. Also added support for
  33  *             Wheel command. Bryan W. Headley July-15-2003.
  34  *      v1.2 - Reworked jitter timer as a kernel thread.
  35  *             Bryan W. Headley November-28-2003/Jan-10-2004.
  36  *      v1.3 - Repaired issue of kernel thread going nuts on single-processor
  37  *             machines, introduced programmableDelay as a command line
  38  *             parameter. Feb 7 2004, Bryan W. Headley.
  39  *      v1.4 - Re-wire jitter so it does not require a thread. Courtesy of
  40  *             Rene van Paassen. Added reporting of physical pointer device
  41  *             (e.g., stylus, mouse in reports 2, 3, 4, 5. We don't know
  42  *             for reports 1, 6.)
  43  *             what physical device reports for reports 1, 6.) Also enabled
  44  *             MOUSE and LENS tool button modes. Renamed "rubber" to "eraser".
  45  *             Feb 20, 2004, Bryan W. Headley.
  46  *      v1.5 - Added previousJitterable, so we don't do jitter delay when the
  47  *             user is holding a button down for periods of time.
  48  *
  49  * NOTE:
  50  *      This kernel driver is augmented by the "Aiptek" XFree86 input
  51  *      driver for your X server, as well as the Gaiptek GUI Front-end
  52  *      "Tablet Manager".
  53  *      These three products are highly interactive with one another,
  54  *      so therefore it's easier to document them all as one subsystem.
  55  *      Please visit the project's "home page", located at,
  56  *      http://aiptektablet.sourceforge.net.
  57  *
  58  * This program is free software; you can redistribute it and/or modify
  59  * it under the terms of the GNU General Public License as published by
  60  * the Free Software Foundation; either version 2 of the License, or
  61  * (at your option) any later version.
  62  *
  63  * This program is distributed in the hope that it will be useful,
  64  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  65  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  66  * GNU General Public License for more details.
  67  *
  68  * You should have received a copy of the GNU General Public License
  69  * along with this program; if not, write to the Free Software
  70  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  71  */
  72
  73 #include <linux/jiffies.h>
  74 #include <linux/kernel.h>
  75 #include <linux/slab.h>
  76 #include <linux/module.h>
  77 #include <linux/init.h>
  78 #include <linux/usb/input.h>
  79 #include <linux/sched.h>
  80 #include <asm/uaccess.h>
  81 #include <asm/unaligned.h>
  82
  83 /*
  84  * Version Information
  85  */
  86 #define DRIVER_VERSION "v1.5 (May-15-2004)"
  87 #define DRIVER_AUTHOR  "Bryan W. Headley/Chris Atenasio"
  88 #define DRIVER_DESC    "Aiptek HyperPen USB Tablet Driver (Linux 2.6.x)"
  89
  90 /*
  91  * Aiptek status packet:
  92  *
  93  * (returned as Report 1 - relative coordinates from mouse and stylus)
  94  *
  95  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
  96  * byte0   0     0     0     0     0     0     0     1
  97  * byte1   0     0     0     0     0    BS2   BS    Tip
  98  * byte2  X7    X6    X5    X4    X3    X2    X1    X0
  99  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 100  *
 101  * (returned as Report 2 - absolute coordinates from the stylus)
 102  *
 103  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 104  * byte0   0     0     0     0     0     0     1     0
 105  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 106  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 107  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 108  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 109  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 110  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 111  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 112  *
 113  * (returned as Report 3 - absolute coordinates from the mouse)
 114  *
 115  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 116  * byte0   0     0     0     0     0     0     1     0
 117  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 118  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 119  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 120  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 121  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 122  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 123  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 124  *
 125  * (returned as Report 4 - macrokeys from the stylus)
 126  *
 127  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 128  * byte0   0     0     0     0     0     1     0     0
 129  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 130  * byte2   0     0     0     0     0     0     1     0
 131  * byte3   0     0     0    K4    K3    K2    K1    K0
 132  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 133  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 134  *
 135  * (returned as Report 5 - macrokeys from the mouse)
 136  *
 137  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 138  * byte0   0     0     0     0     0     1     0     0
 139  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 140  * byte2   0     0     0     0     0     0     1     0
 141  * byte3   0     0     0    K4    K3    K2    K1    K0
 142  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 143  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 144  *
 145  * IR: In Range = Proximity on
 146  * DV = Data Valid
 147  * BS = Barrel Switch (as in, macro keys)
 148  * BS2 also referred to as Tablet Pick
 149  *
 150  * Command Summary:
 151  *
 152  * Use report_type CONTROL (3)
 153  * Use report_id   2
 154  *
 155  * Command/Data    Description     Return Bytes    Return Value
 156  * 0x10/0x00       SwitchToMouse       0
 157  * 0x10/0x01       SwitchToTablet      0
 158  * 0x18/0x04       SetResolution       0
 159  * 0x12/0xFF       AutoGainOn          0
 160  * 0x17/0x00       FilterOn            0
 161  * 0x01/0x00       GetXExtension       2           MaxX
 162  * 0x01/0x01       GetYExtension       2           MaxY
 163  * 0x02/0x00       GetModelCode        2           ModelCode = LOBYTE
 164  * 0x03/0x00       GetODMCode          2           ODMCode
 165  * 0x08/0x00       GetPressureLevels   2           =512
 166  * 0x04/0x00       GetFirmwareVersion  2           Firmware Version
 167  * 0x11/0x02       EnableMacroKeys     0
 168  *
 169  * To initialize the tablet:
 170  *
 171  * (1) Send Resolution500LPI (Command)
 172  * (2) Query for Model code (Option Report)
 173  * (3) Query for ODM code (Option Report)
 174  * (4) Query for firmware (Option Report)
 175  * (5) Query for GetXExtension (Option Report)
 176  * (6) Query for GetYExtension (Option Report)
 177  * (7) Query for GetPressureLevels (Option Report)
 178  * (8) SwitchToTablet for Absolute coordinates, or
 179  *     SwitchToMouse for Relative coordinates (Command)
 180  * (9) EnableMacroKeys (Command)
 181  * (10) FilterOn (Command)
 182  * (11) AutoGainOn (Command)
 183  *
 184  * (Step 9 can be omitted, but you'll then have no function keys.)
 185  */
 186
 187 #define USB_VENDOR_ID_AIPTEK                            0x08ca
 188 #define USB_REQ_GET_REPORT                              0x01
 189 #define USB_REQ_SET_REPORT                              0x09
 190
 191         /* PointerMode codes
 192          */
 193 #define AIPTEK_POINTER_ONLY_MOUSE_MODE                  0
 194 #define AIPTEK_POINTER_ONLY_STYLUS_MODE                 1
 195 #define AIPTEK_POINTER_EITHER_MODE                      2
 196
 197 #define AIPTEK_POINTER_ALLOW_MOUSE_MODE(a)              \
 198         (a == AIPTEK_POINTER_ONLY_MOUSE_MODE ||         \
 199          a == AIPTEK_POINTER_EITHER_MODE)
 200 #define AIPTEK_POINTER_ALLOW_STYLUS_MODE(a)             \
 201         (a == AIPTEK_POINTER_ONLY_STYLUS_MODE ||        \
 202          a == AIPTEK_POINTER_EITHER_MODE)
 203
 204         /* CoordinateMode code
 205          */
 206 #define AIPTEK_COORDINATE_RELATIVE_MODE                 0
 207 #define AIPTEK_COORDINATE_ABSOLUTE_MODE                 1
 208
 209        /* XTilt and YTilt values
 210         */
 211 #define AIPTEK_TILT_MIN                                 (-128)
 212 #define AIPTEK_TILT_MAX                                 127
 213 #define AIPTEK_TILT_DISABLE                             (-10101)
 214
 215         /* Wheel values
 216          */
 217 #define AIPTEK_WHEEL_MIN                                0
 218 #define AIPTEK_WHEEL_MAX                                1024
 219 #define AIPTEK_WHEEL_DISABLE                            (-10101)
 220
 221         /* ToolCode values, which BTW are 0x140 .. 0x14f
 222          * We have things set up such that if TOOL_BUTTON_FIRED_BIT is
 223          * not set, we'll send one instance of AIPTEK_TOOL_BUTTON_xxx.
 224          *
 225          * Whenever the user resets the value, TOOL_BUTTON_FIRED_BIT will
 226          * get reset.
 227          */
 228 #define TOOL_BUTTON(x)                                  ((x) & 0x14f)
 229 #define TOOL_BUTTON_FIRED(x)                            ((x) & 0x200)
 230 #define TOOL_BUTTON_FIRED_BIT                           0x200
 231         /* toolMode codes
 232          */
 233 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 234 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 235 #define AIPTEK_TOOL_BUTTON_PENCIL_MODE                  BTN_TOOL_PENCIL
 236 #define AIPTEK_TOOL_BUTTON_BRUSH_MODE                   BTN_TOOL_BRUSH
 237 #define AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE                BTN_TOOL_AIRBRUSH
 238 #define AIPTEK_TOOL_BUTTON_ERASER_MODE                  BTN_TOOL_RUBBER
 239 #define AIPTEK_TOOL_BUTTON_MOUSE_MODE                   BTN_TOOL_MOUSE
 240 #define AIPTEK_TOOL_BUTTON_LENS_MODE                    BTN_TOOL_LENS
 241
 242         /* Diagnostic message codes
 243          */
 244 #define AIPTEK_DIAGNOSTIC_NA                            0
 245 #define AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE  1
 246 #define AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE  2
 247 #define AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED               3
 248
 249         /* Time to wait (in ms) to help mask hand jittering
 250          * when pressing the stylus buttons.
 251          */
 252 #define AIPTEK_JITTER_DELAY_DEFAULT                     50
 253
 254         /* Time to wait (in ms) in-between sending the tablet
 255          * a command and beginning the process of reading the return
 256          * sequence from the tablet.
 257          */
 258 #define AIPTEK_PROGRAMMABLE_DELAY_25            25
 259 #define AIPTEK_PROGRAMMABLE_DELAY_50            50
 260 #define AIPTEK_PROGRAMMABLE_DELAY_100           100
 261 #define AIPTEK_PROGRAMMABLE_DELAY_200           200
 262 #define AIPTEK_PROGRAMMABLE_DELAY_300           300
 263 #define AIPTEK_PROGRAMMABLE_DELAY_400           400
 264 #define AIPTEK_PROGRAMMABLE_DELAY_DEFAULT       AIPTEK_PROGRAMMABLE_DELAY_400
 265
 266         /* Mouse button programming
 267          */
 268 #define AIPTEK_MOUSE_LEFT_BUTTON                0x01
 269 #define AIPTEK_MOUSE_RIGHT_BUTTON               0x02
 270 #define AIPTEK_MOUSE_MIDDLE_BUTTON              0x04
 271
 272         /* Stylus button programming
 273          */
 274 #define AIPTEK_STYLUS_LOWER_BUTTON              0x08
 275 #define AIPTEK_STYLUS_UPPER_BUTTON              0x10
 276
 277         /* Length of incoming packet from the tablet
 278          */
 279 #define AIPTEK_PACKET_LENGTH                    8
 280
 281         /* We report in EV_MISC both the proximity and
 282          * whether the report came from the stylus, tablet mouse
 283          * or "unknown" -- Unknown when the tablet is in relative
 284          * mode, because we only get report 1's.
 285          */
 286 #define AIPTEK_REPORT_TOOL_UNKNOWN              0x10
 287 #define AIPTEK_REPORT_TOOL_STYLUS               0x20
 288 #define AIPTEK_REPORT_TOOL_MOUSE                0x40
 289
 290 static int programmableDelay = AIPTEK_PROGRAMMABLE_DELAY_DEFAULT;
 291 static int jitterDelay = AIPTEK_JITTER_DELAY_DEFAULT;
 292
 293 struct aiptek_features {
 294         int odmCode;            /* Tablet manufacturer code       */
 295         int modelCode;          /* Tablet model code (not unique) */
 296         int firmwareCode;       /* prom/eeprom version            */
 297         char usbPath[64 + 1];   /* device's physical usb path     */
 298         char inputPath[64 + 1]; /* input device path              */
 299 };
 300
 301 struct aiptek_settings {
 302         int pointerMode;        /* stylus-, mouse-only or either */
 303         int coordinateMode;     /* absolute/relative coords      */
 304         int toolMode;           /* pen, pencil, brush, etc. tool */
 305         int xTilt;              /* synthetic xTilt amount        */
 306         int yTilt;              /* synthetic yTilt amount        */
 307         int wheel;              /* synthetic wheel amount        */
 308         int stylusButtonUpper;  /* stylus upper btn delivers...  */
 309         int stylusButtonLower;  /* stylus lower btn delivers...  */
 310         int mouseButtonLeft;    /* mouse left btn delivers...    */
 311         int mouseButtonMiddle;  /* mouse middle btn delivers...  */
 312         int mouseButtonRight;   /* mouse right btn delivers...   */
 313         int programmableDelay;  /* delay for tablet programming  */
 314         int jitterDelay;        /* delay for hand jittering      */
 315 };
 316
 317 struct aiptek {
 318         struct input_dev *inputdev;             /* input device struct           */
 319         struct usb_device *usbdev;              /* usb device struct             */
 320         struct urb *urb;                        /* urb for incoming reports      */
 321         dma_addr_t data_dma;                    /* our dma stuffage              */
 322         struct aiptek_features features;        /* tablet's array of features    */
 323         struct aiptek_settings curSetting;      /* tablet's current programmable */
 324         struct aiptek_settings newSetting;      /* ... and new param settings    */
 325         unsigned int ifnum;                     /* interface number for IO       */
 326         int diagnostic;                         /* tablet diagnostic codes       */
 327         unsigned long eventCount;               /* event count                   */
 328         int inDelay;                            /* jitter: in jitter delay?      */
 329         unsigned long endDelay;                 /* jitter: time when delay ends  */
 330         int previousJitterable;                 /* jitterable prev value     */
 331         unsigned char *data;                    /* incoming packet data          */
 332 };
 333
 334 /*
 335  * Permit easy lookup of keyboard events to send, versus
 336  * the bitmap which comes from the tablet. This hides the
 337  * issue that the F_keys are not sequentially numbered.
 338  */
 339 static const int macroKeyEvents[] = {
 340         KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
 341         KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
 342         KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
 343         KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
 344         KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
 345         KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
 346 };
 347
 348 /***********************************************************************
 349  * Relative reports deliver values in 2's complement format to
 350  * deal with negative offsets.
 351  */
 352 static int aiptek_convert_from_2s_complement(unsigned char c)
 353 {
 354         int ret;
 355         unsigned char b = c;
 356         int negate = 0;
 357
 358         if ((b & 0x80) != 0) {
 359                 b = ~b;
 360                 b--;
 361                 negate = 1;
 362         }
 363         ret = b;
 364         ret = (negate == 1) ? -ret : ret;
 365         return ret;
 366 }
 367
 368 /***********************************************************************
 369  * aiptek_irq can receive one of six potential reports.
 370  * The documentation for each is in the body of the function.
 371  *
 372  * The tablet reports on several attributes per invocation of
 373  * aiptek_irq. Because the Linux Input Event system allows the
 374  * transmission of ONE attribute per input_report_xxx() call,
 375  * collation has to be done on the other end to reconstitute
 376  * a complete tablet report. Further, the number of Input Event reports
 377  * submitted varies, depending on what USB report type, and circumstance.
 378  * To deal with this, EV_MSC is used to indicate an 'end-of-report'
 379  * message. This has been an undocumented convention understood by the kernel
 380  * tablet driver and clients such as gpm and XFree86's tablet drivers.
 381  *
 382  * Of the information received from the tablet, the one piece I
 383  * cannot transmit is the proximity bit (without resorting to an EV_MSC
 384  * convention above.) I therefore have taken over REL_MISC and ABS_MISC
 385  * (for relative and absolute reports, respectively) for communicating
 386  * Proximity. Why two events? I thought it interesting to know if the
 387  * Proximity event occurred while the tablet was in absolute or relative
 388  * mode.
 389  *
 390  * Other tablets use the notion of a certain minimum stylus pressure
 391  * to infer proximity. While that could have been done, that is yet
 392  * another 'by convention' behavior, the documentation for which
 393  * would be spread between two (or more) pieces of software.
 394  *
 395  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
 396  * replaced with the input_sync() method (which emits EV_SYN.)
 397  */
 398
 399 static void aiptek_irq(struct urb *urb, struct pt_regs *regs)
 400 {
 401         struct aiptek *aiptek = urb->context;
 402         unsigned char *data = aiptek->data;
 403         struct input_dev *inputdev = aiptek->inputdev;
 404         int jitterable = 0;
 405         int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
 406
 407         switch (urb->status) {
 408         case 0:
 409                 /* Success */
 410                 break;
 411
 412         case -ECONNRESET:
 413         case -ENOENT:
 414         case -ESHUTDOWN:
 415                 /* This urb is terminated, clean up */
 416                 dbg("%s - urb shutting down with status: %d",
 417                     __FUNCTION__, urb->status);
 418                 return;
 419
 420         default:
 421                 dbg("%s - nonzero urb status received: %d",
 422                     __FUNCTION__, urb->status);
 423                 goto exit;
 424         }
 425
 426         /* See if we are in a delay loop -- throw out report if true.
 427          */
 428         if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
 429                 goto exit;
 430         }
 431
 432         aiptek->inDelay = 0;
 433         aiptek->eventCount++;
 434
 435         /* Report 1 delivers relative coordinates with either a stylus
 436          * or the mouse. You do not know, however, which input
 437          * tool generated the event.
 438          */
 439         if (data[0] == 1) {
 440                 if (aiptek->curSetting.coordinateMode ==
 441                     AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 442                         aiptek->diagnostic =
 443                             AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
 444                 } else {
 445                         input_regs(inputdev, regs);
 446
 447                         x = aiptek_convert_from_2s_complement(data[2]);
 448                         y = aiptek_convert_from_2s_complement(data[3]);
 449
 450                         /* jitterable keeps track of whether any button has been pressed.
 451                          * We're also using it to remap the physical mouse button mask
 452                          * to pseudo-settings. (We don't specifically care about it's
 453                          * value after moving/transposing mouse button bitmasks, except
 454                          * that a non-zero value indicates that one or more
 455                          * mouse button was pressed.)
 456                          */
 457                         jitterable = data[5] & 0x07;
 458
 459                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 460                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 461                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 462
 463                         input_report_key(inputdev, BTN_LEFT, left);
 464                         input_report_key(inputdev, BTN_MIDDLE, middle);
 465                         input_report_key(inputdev, BTN_RIGHT, right);
 466                         input_report_rel(inputdev, REL_X, x);
 467                         input_report_rel(inputdev, REL_Y, y);
 468                         input_report_rel(inputdev, REL_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 469
 470                         /* Wheel support is in the form of a single-event
 471                          * firing.
 472                          */
 473                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 474                                 input_report_rel(inputdev, REL_WHEEL,
 475                                                  aiptek->curSetting.wheel);
 476                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 477                         }
 478                         input_sync(inputdev);
 479                 }
 480         }
 481         /* Report 2 is delivered only by the stylus, and delivers
 482          * absolute coordinates.
 483          */
 484         else if (data[0] == 2) {
 485                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 486                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 487                 } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
 488                             (aiptek->curSetting.pointerMode)) {
 489                                 aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 490                 } else {
 491                         input_regs(inputdev, regs);
 492
 493                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 494                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 495                         z = le16_to_cpu(get_unaligned((__le16 *) (data + 6)));
 496
 497                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 498                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 499                         tip = (data[5] & 0x04) != 0 ? 1 : 0;
 500
 501                         /* Use jitterable to re-arrange button masks
 502                          */
 503                         jitterable = data[5] & 0x18;
 504
 505                         bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 506                         pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 507
 508                         /* dv indicates 'data valid' (e.g., the tablet is in sync
 509                          * and has delivered a "correct" report) We will ignore
 510                          * all 'bad' reports...
 511                          */
 512                         if (dv != 0) {
 513                                 /* If we've not already sent a tool_button_?? code, do
 514                                  * so now. Then set FIRED_BIT so it won't be resent unless
 515                                  * the user forces FIRED_BIT off.
 516                                  */
 517                                 if (TOOL_BUTTON_FIRED
 518                                     (aiptek->curSetting.toolMode) == 0) {
 519                                         input_report_key(inputdev,
 520                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 521                                                          1);
 522                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 523                                 }
 524
 525                                 if (p != 0) {
 526                                         input_report_abs(inputdev, ABS_X, x);
 527                                         input_report_abs(inputdev, ABS_Y, y);
 528                                         input_report_abs(inputdev, ABS_PRESSURE, z);
 529
 530                                         input_report_key(inputdev, BTN_TOUCH, tip);
 531                                         input_report_key(inputdev, BTN_STYLUS, bs);
 532                                         input_report_key(inputdev, BTN_STYLUS2, pck);
 533
 534                                         if (aiptek->curSetting.xTilt !=
 535                                             AIPTEK_TILT_DISABLE) {
 536                                                 input_report_abs(inputdev,
 537                                                                  ABS_TILT_X,
 538                                                                  aiptek->curSetting.xTilt);
 539                                         }
 540                                         if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
 541                                                 input_report_abs(inputdev,
 542                                                                  ABS_TILT_Y,
 543                                                                  aiptek->curSetting.yTilt);
 544                                         }
 545
 546                                         /* Wheel support is in the form of a single-event
 547                                          * firing.
 548                                          */
 549                                         if (aiptek->curSetting.wheel !=
 550                                             AIPTEK_WHEEL_DISABLE) {
 551                                                 input_report_abs(inputdev,
 552                                                                  ABS_WHEEL,
 553                                                                  aiptek->curSetting.wheel);
 554                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 555                                         }
 556                                 }
 557                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
 558                                 input_sync(inputdev);
 559                         }
 560                 }
 561         }
 562         /* Report 3's come from the mouse in absolute mode.
 563          */
 564         else if (data[0] == 3) {
 565                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 566                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 567                 } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
 568                         (aiptek->curSetting.pointerMode)) {
 569                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 570                 } else {
 571                         input_regs(inputdev, regs);
 572                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 573                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 574
 575                         jitterable = data[5] & 0x1c;
 576
 577                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 578                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 579                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 580                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 581                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 582
 583                         if (dv != 0) {
 584                                 /* If we've not already sent a tool_button_?? code, do
 585                                  * so now. Then set FIRED_BIT so it won't be resent unless
 586                                  * the user forces FIRED_BIT off.
 587                                  */
 588                                 if (TOOL_BUTTON_FIRED
 589                                     (aiptek->curSetting.toolMode) == 0) {
 590                                         input_report_key(inputdev,
 591                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 592                                                          1);
 593                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 594                                 }
 595
 596                                 if (p != 0) {
 597                                         input_report_abs(inputdev, ABS_X, x);
 598                                         input_report_abs(inputdev, ABS_Y, y);
 599
 600                                         input_report_key(inputdev, BTN_LEFT, left);
 601                                         input_report_key(inputdev, BTN_MIDDLE, middle);
 602                                         input_report_key(inputdev, BTN_RIGHT, right);
 603
 604                                         /* Wheel support is in the form of a single-event
 605                                          * firing.
 606                                          */
 607                                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 608                                                 input_report_abs(inputdev,
 609                                                                  ABS_WHEEL,
 610                                                                  aiptek->curSetting.wheel);
 611                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 612                                         }
 613                                 }
 614                                 input_report_rel(inputdev, REL_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
 615                                 input_sync(inputdev);
 616                         }
 617                 }
 618         }
 619         /* Report 4s come from the macro keys when pressed by stylus
 620          */
 621         else if (data[0] == 4) {
 622                 jitterable = data[1] & 0x18;
 623
 624                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 625                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 626                 tip = (data[1] & 0x04) != 0 ? 1 : 0;
 627                 bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 628                 pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 629
 630                 macro = data[3];
 631                 z = le16_to_cpu(get_unaligned((__le16 *) (data + 4)));
 632
 633                 if (dv != 0) {
 634                         input_regs(inputdev, regs);
 635
 636                         /* If we've not already sent a tool_button_?? code, do
 637                          * so now. Then set FIRED_BIT so it won't be resent unless
 638                          * the user forces FIRED_BIT off.
 639                          */
 640                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 641                                 input_report_key(inputdev,
 642                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 643                                                  1);
 644                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 645                         }
 646
 647                         if (p != 0) {
 648                                 input_report_key(inputdev, BTN_TOUCH, tip);
 649                                 input_report_key(inputdev, BTN_STYLUS, bs);
 650                                 input_report_key(inputdev, BTN_STYLUS2, pck);
 651                                 input_report_abs(inputdev, ABS_PRESSURE, z);
 652                         }
 653
 654                         /* For safety, we're sending key 'break' codes for the
 655                          * neighboring macro keys.
 656                          */
 657                         if (macro > 0) {
 658                                 input_report_key(inputdev,
 659                                                  macroKeyEvents[macro - 1], 0);
 660                         }
 661                         if (macro < 25) {
 662                                 input_report_key(inputdev,
 663                                                  macroKeyEvents[macro + 1], 0);
 664                         }
 665                         input_report_key(inputdev, macroKeyEvents[macro], p);
 666                         input_report_abs(inputdev, ABS_MISC,
 667                                          p | AIPTEK_REPORT_TOOL_STYLUS);
 668                         input_sync(inputdev);
 669                 }
 670         }
 671         /* Report 5s come from the macro keys when pressed by mouse
 672          */
 673         else if (data[0] == 5) {
 674                 jitterable = data[1] & 0x1c;
 675
 676                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 677                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 678                 left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 679                 right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 680                 middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 681                 macro = data[3];
 682
 683                 if (dv != 0) {
 684                         input_regs(inputdev, regs);
 685
 686                         /* If we've not already sent a tool_button_?? code, do
 687                          * so now. Then set FIRED_BIT so it won't be resent unless
 688                          * the user forces FIRED_BIT off.
 689                          */
 690                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 691                                 input_report_key(inputdev,
 692                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 693                                                  1);
 694                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 695                         }
 696
 697                         if (p != 0) {
 698                                 input_report_key(inputdev, BTN_LEFT, left);
 699                                 input_report_key(inputdev, BTN_MIDDLE, middle);
 700                                 input_report_key(inputdev, BTN_RIGHT, right);
 701                         }
 702
 703                         /* For safety, we're sending key 'break' codes for the
 704                          * neighboring macro keys.
 705                          */
 706                         if (macro > 0) {
 707                                 input_report_key(inputdev,
 708                                                  macroKeyEvents[macro - 1], 0);
 709                         }
 710                         if (macro < 25) {
 711                                 input_report_key(inputdev,
 712                                                  macroKeyEvents[macro + 1], 0);
 713                         }
 714
 715                         input_report_key(inputdev, macroKeyEvents[macro], 1);
 716                         input_report_rel(inputdev, ABS_MISC,
 717                                          p | AIPTEK_REPORT_TOOL_MOUSE);
 718                         input_sync(inputdev);
 719                 }
 720         }
 721         /* We have no idea which tool can generate a report 6. Theoretically,
 722          * neither need to, having been given reports 4 & 5 for such use.
 723          * However, report 6 is the 'official-looking' report for macroKeys;
 724          * reports 4 & 5 supposively are used to support unnamed, unknown
 725          * hat switches (which just so happen to be the macroKeys.)
 726          */
 727         else if (data[0] == 6) {
 728                 macro = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 729                 input_regs(inputdev, regs);
 730
 731                 if (macro > 0) {
 732                         input_report_key(inputdev, macroKeyEvents[macro - 1],
 733                                          0);
 734                 }
 735                 if (macro < 25) {
 736                         input_report_key(inputdev, macroKeyEvents[macro + 1],
 737                                          0);
 738                 }
 739
 740                 /* If we've not already sent a tool_button_?? code, do
 741                  * so now. Then set FIRED_BIT so it won't be resent unless
 742                  * the user forces FIRED_BIT off.
 743                  */
 744                 if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 745                         input_report_key(inputdev,
 746                                          TOOL_BUTTON(aiptek->curSetting.
 747                                                      toolMode), 1);
 748                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 749                 }
 750
 751                 input_report_key(inputdev, macroKeyEvents[macro], 1);
 752                 input_report_abs(inputdev, ABS_MISC,
 753                                  1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 754                 input_sync(inputdev);
 755         } else {
 756                 dbg("Unknown report %d", data[0]);
 757         }
 758
 759         /* Jitter may occur when the user presses a button on the stlyus
 760          * or the mouse. What we do to prevent that is wait 'x' milliseconds
 761          * following a 'jitterable' event, which should give the hand some time
 762          * stabilize itself.
 763          *
 764          * We just introduced aiptek->previousJitterable to carry forth the
 765          * notion that jitter occurs when the button state changes from on to off:
 766          * a person drawing, holding a button down is not subject to jittering.
 767          * With that in mind, changing from upper button depressed to lower button
 768          * WILL transition through a jitter delay.
 769          */
 770
 771         if (aiptek->previousJitterable != jitterable &&
 772             aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
 773                 aiptek->endDelay = jiffies +
 774                     ((aiptek->curSetting.jitterDelay * HZ) / 1000);
 775                 aiptek->inDelay = 1;
 776         }
 777         aiptek->previousJitterable = jitterable;
 778
 779 exit:
 780         retval = usb_submit_urb(urb, GFP_ATOMIC);
 781         if (retval != 0) {
 782                 err("%s - usb_submit_urb failed with result %d",
 783                     __FUNCTION__, retval);
 784         }
 785 }
 786
 787 /***********************************************************************
 788  * These are the USB id's known so far. We do not identify them to
 789  * specific Aiptek model numbers, because there has been overlaps,
 790  * use, and reuse of id's in existing models. Certain models have
 791  * been known to use more than one ID, indicative perhaps of
 792  * manufacturing revisions. In any event, we consider these
 793  * IDs to not be model-specific nor unique.
 794  */
 795 static const struct usb_device_id aiptek_ids[] = {
 796         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
 797         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
 798         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
 799         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
 800         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
 801         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
 802         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
 803         {}
 804 };
 805
 806 MODULE_DEVICE_TABLE(usb, aiptek_ids);
 807
 808 /***********************************************************************
 809  * Open an instance of the tablet driver.
 810  */
 811 static int aiptek_open(struct input_dev *inputdev)
 812 {
 813         struct aiptek *aiptek = inputdev->private;
 814
 815         aiptek->urb->dev = aiptek->usbdev;
 816         if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0)
 817                 return -EIO;
 818
 819         return 0;
 820 }
 821
 822 /***********************************************************************
 823  * Close an instance of the tablet driver.
 824  */
 825 static void aiptek_close(struct input_dev *inputdev)
 826 {
 827         struct aiptek *aiptek = inputdev->private;
 828
 829         usb_kill_urb(aiptek->urb);
 830 }
 831
 832 /***********************************************************************
 833  * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
 834  * where they were known as usb_set_report and usb_get_report.
 835  */
 836 static int
 837 aiptek_set_report(struct aiptek *aiptek,
 838                   unsigned char report_type,
 839                   unsigned char report_id, void *buffer, int size)
 840 {
 841         return usb_control_msg(aiptek->usbdev,
 842                                usb_sndctrlpipe(aiptek->usbdev, 0),
 843                                USB_REQ_SET_REPORT,
 844                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 845                                USB_DIR_OUT, (report_type << 8) + report_id,
 846                                aiptek->ifnum, buffer, size, 5000);
 847 }
 848
 849 static int
 850 aiptek_get_report(struct aiptek *aiptek,
 851                   unsigned char report_type,
 852                   unsigned char report_id, void *buffer, int size)
 853 {
 854         return usb_control_msg(aiptek->usbdev,
 855                                usb_rcvctrlpipe(aiptek->usbdev, 0),
 856                                USB_REQ_GET_REPORT,
 857                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 858                                USB_DIR_IN, (report_type << 8) + report_id,
 859                                aiptek->ifnum, buffer, size, 5000);
 860 }
 861
 862 /***********************************************************************
 863  * Send a command to the tablet.
 864  */
 865 static int
 866 aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
 867 {
 868         const int sizeof_buf = 3 * sizeof(u8);
 869         int ret;
 870         u8 *buf;
 871
 872         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 873         if (!buf)
 874                 return -ENOMEM;
 875
 876         buf[0] = 2;
 877         buf[1] = command;
 878         buf[2] = data;
 879
 880         if ((ret =
 881              aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 882                 dbg("aiptek_program: failed, tried to send: 0x%02x 0x%02x",
 883                     command, data);
 884         }
 885         kfree(buf);
 886         return ret < 0 ? ret : 0;
 887 }
 888
 889 /***********************************************************************
 890  * Retrieve information from the tablet. Querying info is defined as first
 891  * sending the {command,data} sequence as a command, followed by a wait
 892  * (aka, "programmaticDelay") and then a "read" request.
 893  */
 894 static int
 895 aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
 896 {
 897         const int sizeof_buf = 3 * sizeof(u8);
 898         int ret;
 899         u8 *buf;
 900
 901         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 902         if (!buf)
 903                 return -ENOMEM;
 904
 905         buf[0] = 2;
 906         buf[1] = command;
 907         buf[2] = data;
 908
 909         if (aiptek_command(aiptek, command, data) != 0) {
 910                 kfree(buf);
 911                 return -EIO;
 912         }
 913         msleep(aiptek->curSetting.programmableDelay);
 914
 915         if ((ret =
 916              aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 917                 dbg("aiptek_query failed: returned 0x%02x 0x%02x 0x%02x",
 918                     buf[0], buf[1], buf[2]);
 919                 ret = -EIO;
 920         } else {
 921                 ret = le16_to_cpu(get_unaligned((__le16 *) (buf + 1)));
 922         }
 923         kfree(buf);
 924         return ret;
 925 }
 926
 927 /***********************************************************************
 928  * Program the tablet into either absolute or relative mode.
 929  * We also get information about the tablet's size.
 930  */
 931 static int aiptek_program_tablet(struct aiptek *aiptek)
 932 {
 933         int ret;
 934         /* Execute Resolution500LPI */
 935         if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
 936                 return ret;
 937
 938         /* Query getModelCode */
 939         if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
 940                 return ret;
 941         aiptek->features.modelCode = ret & 0xff;
 942
 943         /* Query getODMCode */
 944         if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
 945                 return ret;
 946         aiptek->features.odmCode = ret;
 947
 948         /* Query getFirmwareCode */
 949         if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
 950                 return ret;
 951         aiptek->features.firmwareCode = ret;
 952
 953         /* Query getXextension */
 954         if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
 955                 return ret;
 956         aiptek->inputdev->absmin[ABS_X] = 0;
 957         aiptek->inputdev->absmax[ABS_X] = ret - 1;
 958
 959         /* Query getYextension */
 960         if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
 961                 return ret;
 962         aiptek->inputdev->absmin[ABS_Y] = 0;
 963         aiptek->inputdev->absmax[ABS_Y] = ret - 1;
 964
 965         /* Query getPressureLevels */
 966         if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
 967                 return ret;
 968         aiptek->inputdev->absmin[ABS_PRESSURE] = 0;
 969         aiptek->inputdev->absmax[ABS_PRESSURE] = ret - 1;
 970
 971         /* Depending on whether we are in absolute or relative mode, we will
 972          * do a switchToTablet(absolute) or switchToMouse(relative) command.
 973          */
 974         if (aiptek->curSetting.coordinateMode ==
 975             AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 976                 /* Execute switchToTablet */
 977                 if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
 978                         return ret;
 979                 }
 980         } else {
 981                 /* Execute switchToMouse */
 982                 if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
 983                         return ret;
 984                 }
 985         }
 986
 987         /* Enable the macro keys */
 988         if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
 989                 return ret;
 990 #if 0
 991         /* Execute FilterOn */
 992         if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
 993                 return ret;
 994 #endif
 995
 996         /* Execute AutoGainOn */
 997         if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
 998                 return ret;
 999
1000         /* Reset the eventCount, so we track events from last (re)programming
1001          */
1002         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
1003         aiptek->eventCount = 0;
1004
1005         return 0;
1006 }
1007
1008 /***********************************************************************
1009  * Sysfs functions. Sysfs prefers that individually-tunable parameters
1010  * exist in their separate pseudo-files. Summary data that is immutable
1011  * may exist in a singular file so long as you don't define a writeable
1012  * interface.
1013  */
1014
1015 /***********************************************************************
1016  * support the 'size' file -- display support
1017  */
1018 static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
1019 {
1020         struct aiptek *aiptek = dev_get_drvdata(dev);
1021
1022         if (aiptek == NULL)
1023                 return 0;
1024
1025         return snprintf(buf, PAGE_SIZE, "%dx%d\n",
1026                         aiptek->inputdev->absmax[ABS_X] + 1,
1027                         aiptek->inputdev->absmax[ABS_Y] + 1);
1028 }
1029
1030 /* These structs define the sysfs files, param #1 is the name of the
1031  * file, param 2 is the file permissions, param 3 & 4 are to the
1032  * output generator and input parser routines. Absence of a routine is
1033  * permitted -- it only means can't either 'cat' the file, or send data
1034  * to it.
1035  */
1036 static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
1037
1038 /***********************************************************************
1039  * support routines for the 'product_id' file
1040  */
1041 static ssize_t show_tabletProductId(struct device *dev, struct device_attribute *attr, char *buf)
1042 {
1043         struct aiptek *aiptek = dev_get_drvdata(dev);
1044
1045         if (aiptek == NULL)
1046                 return 0;
1047
1048         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
1049                         aiptek->inputdev->id.product);
1050 }
1051
1052 static DEVICE_ATTR(product_id, S_IRUGO, show_tabletProductId, NULL);
1053
1054 /***********************************************************************
1055  * support routines for the 'vendor_id' file
1056  */
1057 static ssize_t show_tabletVendorId(struct device *dev, struct device_attribute *attr, char *buf)
1058 {
1059         struct aiptek *aiptek = dev_get_drvdata(dev);
1060
1061         if (aiptek == NULL)
1062                 return 0;
1063
1064         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->inputdev->id.vendor);
1065 }
1066
1067 static DEVICE_ATTR(vendor_id, S_IRUGO, show_tabletVendorId, NULL);
1068
1069 /***********************************************************************
1070  * support routines for the 'vendor' file
1071  */
1072 static ssize_t show_tabletManufacturer(struct device *dev, struct device_attribute *attr, char *buf)
1073 {
1074         struct aiptek *aiptek = dev_get_drvdata(dev);
1075         int retval;
1076
1077         if (aiptek == NULL)
1078                 return 0;
1079
1080         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->manufacturer);
1081         return retval;
1082 }
1083
1084 static DEVICE_ATTR(vendor, S_IRUGO, show_tabletManufacturer, NULL);
1085
1086 /***********************************************************************
1087  * support routines for the 'product' file
1088  */
1089 static ssize_t show_tabletProduct(struct device *dev, struct device_attribute *attr, char *buf)
1090 {
1091         struct aiptek *aiptek = dev_get_drvdata(dev);
1092         int retval;
1093
1094         if (aiptek == NULL)
1095                 return 0;
1096
1097         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->product);
1098         return retval;
1099 }
1100
1101 static DEVICE_ATTR(product, S_IRUGO, show_tabletProduct, NULL);
1102
1103 /***********************************************************************
1104  * support routines for the 'pointer_mode' file. Note that this file
1105  * both displays current setting and allows reprogramming.
1106  */
1107 static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
1108 {
1109         struct aiptek *aiptek = dev_get_drvdata(dev);
1110         char *s;
1111
1112         if (aiptek == NULL)
1113                 return 0;
1114
1115         switch (aiptek->curSetting.pointerMode) {
1116         case AIPTEK_POINTER_ONLY_STYLUS_MODE:
1117                 s = "stylus";
1118                 break;
1119
1120         case AIPTEK_POINTER_ONLY_MOUSE_MODE:
1121                 s = "mouse";
1122                 break;
1123
1124         case AIPTEK_POINTER_EITHER_MODE:
1125                 s = "either";
1126                 break;
1127
1128         default:
1129                 s = "unknown";
1130                 break;
1131         }
1132         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1133 }
1134
1135 static ssize_t
1136 store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1137 {
1138         struct aiptek *aiptek = dev_get_drvdata(dev);
1139         if (aiptek == NULL)
1140                 return 0;
1141
1142         if (strcmp(buf, "stylus") == 0) {
1143                 aiptek->newSetting.pointerMode =
1144                     AIPTEK_POINTER_ONLY_STYLUS_MODE;
1145         } else if (strcmp(buf, "mouse") == 0) {
1146                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_ONLY_MOUSE_MODE;
1147         } else if (strcmp(buf, "either") == 0) {
1148                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
1149         }
1150         return count;
1151 }
1152
1153 static DEVICE_ATTR(pointer_mode,
1154                    S_IRUGO | S_IWUGO,
1155                    show_tabletPointerMode, store_tabletPointerMode);
1156
1157 /***********************************************************************
1158  * support routines for the 'coordinate_mode' file. Note that this file
1159  * both displays current setting and allows reprogramming.
1160  */
1161 static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
1162 {
1163         struct aiptek *aiptek = dev_get_drvdata(dev);
1164         char *s;
1165
1166         if (aiptek == NULL)
1167                 return 0;
1168
1169         switch (aiptek->curSetting.coordinateMode) {
1170         case AIPTEK_COORDINATE_ABSOLUTE_MODE:
1171                 s = "absolute";
1172                 break;
1173
1174         case AIPTEK_COORDINATE_RELATIVE_MODE:
1175                 s = "relative";
1176                 break;
1177
1178         default:
1179                 s = "unknown";
1180                 break;
1181         }
1182         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1183 }
1184
1185 static ssize_t
1186 store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1187 {
1188         struct aiptek *aiptek = dev_get_drvdata(dev);
1189         if (aiptek == NULL)
1190                 return 0;
1191
1192         if (strcmp(buf, "absolute") == 0) {
1193                 aiptek->newSetting.pointerMode =
1194                     AIPTEK_COORDINATE_ABSOLUTE_MODE;
1195         } else if (strcmp(buf, "relative") == 0) {
1196                 aiptek->newSetting.pointerMode =
1197                     AIPTEK_COORDINATE_RELATIVE_MODE;
1198         }
1199         return count;
1200 }
1201
1202 static DEVICE_ATTR(coordinate_mode,
1203                    S_IRUGO | S_IWUGO,
1204                    show_tabletCoordinateMode, store_tabletCoordinateMode);
1205
1206 /***********************************************************************
1207  * support routines for the 'tool_mode' file. Note that this file
1208  * both displays current setting and allows reprogramming.
1209  */
1210 static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
1211 {
1212         struct aiptek *aiptek = dev_get_drvdata(dev);
1213         char *s;
1214
1215         if (aiptek == NULL)
1216                 return 0;
1217
1218         switch (TOOL_BUTTON(aiptek->curSetting.toolMode)) {
1219         case AIPTEK_TOOL_BUTTON_MOUSE_MODE:
1220                 s = "mouse";
1221                 break;
1222
1223         case AIPTEK_TOOL_BUTTON_ERASER_MODE:
1224                 s = "eraser";
1225                 break;
1226
1227         case AIPTEK_TOOL_BUTTON_PENCIL_MODE:
1228                 s = "pencil";
1229                 break;
1230
1231         case AIPTEK_TOOL_BUTTON_PEN_MODE:
1232                 s = "pen";
1233                 break;
1234
1235         case AIPTEK_TOOL_BUTTON_BRUSH_MODE:
1236                 s = "brush";
1237                 break;
1238
1239         case AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE:
1240                 s = "airbrush";
1241                 break;
1242
1243         case AIPTEK_TOOL_BUTTON_LENS_MODE:
1244                 s = "lens";
1245                 break;
1246
1247         default:
1248                 s = "unknown";
1249                 break;
1250         }
1251         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1252 }
1253
1254 static ssize_t
1255 store_tabletToolMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1256 {
1257         struct aiptek *aiptek = dev_get_drvdata(dev);
1258         if (aiptek == NULL)
1259                 return 0;
1260
1261         if (strcmp(buf, "mouse") == 0) {
1262                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_MOUSE_MODE;
1263         } else if (strcmp(buf, "eraser") == 0) {
1264                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_ERASER_MODE;
1265         } else if (strcmp(buf, "pencil") == 0) {
1266                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PENCIL_MODE;
1267         } else if (strcmp(buf, "pen") == 0) {
1268                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
1269         } else if (strcmp(buf, "brush") == 0) {
1270                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_BRUSH_MODE;
1271         } else if (strcmp(buf, "airbrush") == 0) {
1272                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE;
1273         } else if (strcmp(buf, "lens") == 0) {
1274                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_LENS_MODE;
1275         }
1276
1277         return count;
1278 }
1279
1280 static DEVICE_ATTR(tool_mode,
1281                    S_IRUGO | S_IWUGO,
1282                    show_tabletToolMode, store_tabletToolMode);
1283
1284 /***********************************************************************
1285  * support routines for the 'xtilt' file. Note that this file
1286  * both displays current setting and allows reprogramming.
1287  */
1288 static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *attr, char *buf)
1289 {
1290         struct aiptek *aiptek = dev_get_drvdata(dev);
1291
1292         if (aiptek == NULL)
1293                 return 0;
1294
1295         if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
1296                 return snprintf(buf, PAGE_SIZE, "disable\n");
1297         } else {
1298                 return snprintf(buf, PAGE_SIZE, "%d\n",
1299                                 aiptek->curSetting.xTilt);
1300         }
1301 }
1302
1303 static ssize_t
1304 store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1305 {
1306         struct aiptek *aiptek = dev_get_drvdata(dev);
1307         int x;
1308
1309         if (aiptek == NULL)
1310                 return 0;
1311
1312         if (strcmp(buf, "disable") == 0) {
1313                 aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
1314         } else {
1315                 x = (int)simple_strtol(buf, NULL, 10);
1316                 if (x >= AIPTEK_TILT_MIN && x <= AIPTEK_TILT_MAX) {
1317                         aiptek->newSetting.xTilt = x;
1318                 }
1319         }
1320         return count;
1321 }
1322
1323 static DEVICE_ATTR(xtilt,
1324                    S_IRUGO | S_IWUGO, show_tabletXtilt, store_tabletXtilt);
1325
1326 /***********************************************************************
1327  * support routines for the 'ytilt' file. Note that this file
1328  * both displays current setting and allows reprogramming.
1329  */
1330 static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *attr, char *buf)
1331 {
1332         struct aiptek *aiptek = dev_get_drvdata(dev);
1333
1334         if (aiptek == NULL)
1335                 return 0;
1336
1337         if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
1338                 return snprintf(buf, PAGE_SIZE, "disable\n");
1339         } else {
1340                 return snprintf(buf, PAGE_SIZE, "%d\n",
1341                                 aiptek->curSetting.yTilt);
1342         }
1343 }
1344
1345 static ssize_t
1346 store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1347 {
1348         struct aiptek *aiptek = dev_get_drvdata(dev);
1349         int y;
1350
1351         if (aiptek == NULL)
1352                 return 0;
1353
1354         if (strcmp(buf, "disable") == 0) {
1355                 aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
1356         } else {
1357                 y = (int)simple_strtol(buf, NULL, 10);
1358                 if (y >= AIPTEK_TILT_MIN && y <= AIPTEK_TILT_MAX) {
1359                         aiptek->newSetting.yTilt = y;
1360                 }
1361         }
1362         return count;
1363 }
1364
1365 static DEVICE_ATTR(ytilt,
1366                    S_IRUGO | S_IWUGO, show_tabletYtilt, store_tabletYtilt);
1367
1368 /***********************************************************************
1369  * support routines for the 'jitter' file. Note that this file
1370  * both displays current setting and allows reprogramming.
1371  */
1372 static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribute *attr, char *buf)
1373 {
1374         struct aiptek *aiptek = dev_get_drvdata(dev);
1375
1376         if (aiptek == NULL)
1377                 return 0;
1378
1379         return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
1380 }
1381
1382 static ssize_t
1383 store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1384 {
1385         struct aiptek *aiptek = dev_get_drvdata(dev);
1386
1387         if (aiptek == NULL)
1388                 return 0;
1389
1390         aiptek->newSetting.jitterDelay = (int)simple_strtol(buf, NULL, 10);
1391         return count;
1392 }
1393
1394 static DEVICE_ATTR(jitter,
1395                    S_IRUGO | S_IWUGO,
1396                    show_tabletJitterDelay, store_tabletJitterDelay);
1397
1398 /***********************************************************************
1399  * support routines for the 'delay' file. Note that this file
1400  * both displays current setting and allows reprogramming.
1401  */
1402 static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, char *buf)
1403 {
1404         struct aiptek *aiptek = dev_get_drvdata(dev);
1405
1406         if (aiptek == NULL)
1407                 return 0;
1408
1409         return snprintf(buf, PAGE_SIZE, "%d\n",
1410                         aiptek->curSetting.programmableDelay);
1411 }
1412
1413 static ssize_t
1414 store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1415 {
1416         struct aiptek *aiptek = dev_get_drvdata(dev);
1417
1418         if (aiptek == NULL)
1419                 return 0;
1420
1421         aiptek->newSetting.programmableDelay = (int)simple_strtol(buf, NULL, 10);
1422         return count;
1423 }
1424
1425 static DEVICE_ATTR(delay,
1426                    S_IRUGO | S_IWUGO,
1427                    show_tabletProgrammableDelay, store_tabletProgrammableDelay);
1428
1429 /***********************************************************************
1430  * support routines for the 'input_path' file. Note that this file
1431  * only displays current setting.
1432  */
1433 static ssize_t show_tabletInputDevice(struct device *dev, struct device_attribute *attr, char *buf)
1434 {
1435         struct aiptek *aiptek = dev_get_drvdata(dev);
1436
1437         if (aiptek == NULL)
1438                 return 0;
1439
1440         return snprintf(buf, PAGE_SIZE, "/dev/input/%s\n",
1441                         aiptek->features.inputPath);
1442 }
1443
1444 static DEVICE_ATTR(input_path, S_IRUGO, show_tabletInputDevice, NULL);
1445
1446 /***********************************************************************
1447  * support routines for the 'event_count' file. Note that this file
1448  * only displays current setting.
1449  */
1450 static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attribute *attr, char *buf)
1451 {
1452         struct aiptek *aiptek = dev_get_drvdata(dev);
1453
1454         if (aiptek == NULL)
1455                 return 0;
1456
1457         return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
1458 }
1459
1460 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
1461
1462 /***********************************************************************
1463  * support routines for the 'diagnostic' file. Note that this file
1464  * only displays current setting.
1465  */
1466 static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_attribute *attr, char *buf)
1467 {
1468         struct aiptek *aiptek = dev_get_drvdata(dev);
1469         char *retMsg;
1470
1471         if (aiptek == NULL)
1472                 return 0;
1473
1474         switch (aiptek->diagnostic) {
1475         case AIPTEK_DIAGNOSTIC_NA:
1476                 retMsg = "no errors\n";
1477                 break;
1478
1479         case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
1480                 retMsg = "Error: receiving relative reports\n";
1481                 break;
1482
1483         case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
1484                 retMsg = "Error: receiving absolute reports\n";
1485                 break;
1486
1487         case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
1488                 if (aiptek->curSetting.pointerMode ==
1489                     AIPTEK_POINTER_ONLY_MOUSE_MODE) {
1490                         retMsg = "Error: receiving stylus reports\n";
1491                 } else {
1492                         retMsg = "Error: receiving mouse reports\n";
1493                 }
1494                 break;
1495
1496         default:
1497                 return 0;
1498         }
1499         return snprintf(buf, PAGE_SIZE, retMsg);
1500 }
1501
1502 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
1503
1504 /***********************************************************************
1505  * support routines for the 'stylus_upper' file. Note that this file
1506  * both displays current setting and allows for setting changing.
1507  */
1508 static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
1509 {
1510         struct aiptek *aiptek = dev_get_drvdata(dev);
1511         char *s;
1512
1513         if (aiptek == NULL)
1514                 return 0;
1515
1516         switch (aiptek->curSetting.stylusButtonUpper) {
1517         case AIPTEK_STYLUS_UPPER_BUTTON:
1518                 s = "upper";
1519                 break;
1520
1521         case AIPTEK_STYLUS_LOWER_BUTTON:
1522                 s = "lower";
1523                 break;
1524
1525         default:
1526                 s = "unknown";
1527                 break;
1528         }
1529         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1530 }
1531
1532 static ssize_t
1533 store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1534 {
1535         struct aiptek *aiptek = dev_get_drvdata(dev);
1536
1537         if (aiptek == NULL)
1538                 return 0;
1539
1540         if (strcmp(buf, "upper") == 0) {
1541                 aiptek->newSetting.stylusButtonUpper =
1542                     AIPTEK_STYLUS_UPPER_BUTTON;
1543         } else if (strcmp(buf, "lower") == 0) {
1544                 aiptek->newSetting.stylusButtonUpper =
1545                     AIPTEK_STYLUS_LOWER_BUTTON;
1546         }
1547         return count;
1548 }
1549
1550 static DEVICE_ATTR(stylus_upper,
1551                    S_IRUGO | S_IWUGO,
1552                    show_tabletStylusUpper, store_tabletStylusUpper);
1553
1554 /***********************************************************************
1555  * support routines for the 'stylus_lower' file. Note that this file
1556  * both displays current setting and allows for setting changing.
1557  */
1558 static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribute *attr, char *buf)
1559 {
1560         struct aiptek *aiptek = dev_get_drvdata(dev);
1561         char *s;
1562
1563         if (aiptek == NULL)
1564                 return 0;
1565
1566         switch (aiptek->curSetting.stylusButtonLower) {
1567         case AIPTEK_STYLUS_UPPER_BUTTON:
1568                 s = "upper";
1569                 break;
1570
1571         case AIPTEK_STYLUS_LOWER_BUTTON:
1572                 s = "lower";
1573                 break;
1574
1575         default:
1576                 s = "unknown";
1577                 break;
1578         }
1579         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1580 }
1581
1582 static ssize_t
1583 store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1584 {
1585         struct aiptek *aiptek = dev_get_drvdata(dev);
1586
1587         if (aiptek == NULL)
1588                 return 0;
1589
1590         if (strcmp(buf, "upper") == 0) {
1591                 aiptek->newSetting.stylusButtonLower =
1592                     AIPTEK_STYLUS_UPPER_BUTTON;
1593         } else if (strcmp(buf, "lower") == 0) {
1594                 aiptek->newSetting.stylusButtonLower =
1595                     AIPTEK_STYLUS_LOWER_BUTTON;
1596         }
1597         return count;
1598 }
1599
1600 static DEVICE_ATTR(stylus_lower,
1601                    S_IRUGO | S_IWUGO,
1602                    show_tabletStylusLower, store_tabletStylusLower);
1603
1604 /***********************************************************************
1605  * support routines for the 'mouse_left' file. Note that this file
1606  * both displays current setting and allows for setting changing.
1607  */
1608 static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
1609 {
1610         struct aiptek *aiptek = dev_get_drvdata(dev);
1611         char *s;
1612
1613         if (aiptek == NULL)
1614                 return 0;
1615
1616         switch (aiptek->curSetting.mouseButtonLeft) {
1617         case AIPTEK_MOUSE_LEFT_BUTTON:
1618                 s = "left";
1619                 break;
1620
1621         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1622                 s = "middle";
1623                 break;
1624
1625         case AIPTEK_MOUSE_RIGHT_BUTTON:
1626                 s = "right";
1627                 break;
1628
1629         default:
1630                 s = "unknown";
1631                 break;
1632         }
1633         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1634 }
1635
1636 static ssize_t
1637 store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1638 {
1639         struct aiptek *aiptek = dev_get_drvdata(dev);
1640
1641         if (aiptek == NULL)
1642                 return 0;
1643
1644         if (strcmp(buf, "left") == 0) {
1645                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
1646         } else if (strcmp(buf, "middle") == 0) {
1647                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_MIDDLE_BUTTON;
1648         } else if (strcmp(buf, "right") == 0) {
1649                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_RIGHT_BUTTON;
1650         }
1651         return count;
1652 }
1653
1654 static DEVICE_ATTR(mouse_left,
1655                    S_IRUGO | S_IWUGO,
1656                    show_tabletMouseLeft, store_tabletMouseLeft);
1657
1658 /***********************************************************************
1659  * support routines for the 'mouse_middle' file. Note that this file
1660  * both displays current setting and allows for setting changing.
1661  */
1662 static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, char *buf)
1663 {
1664         struct aiptek *aiptek = dev_get_drvdata(dev);
1665         char *s;
1666
1667         if (aiptek == NULL)
1668                 return 0;
1669
1670         switch (aiptek->curSetting.mouseButtonMiddle) {
1671         case AIPTEK_MOUSE_LEFT_BUTTON:
1672                 s = "left";
1673                 break;
1674
1675         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1676                 s = "middle";
1677                 break;
1678
1679         case AIPTEK_MOUSE_RIGHT_BUTTON:
1680                 s = "right";
1681                 break;
1682
1683         default:
1684                 s = "unknown";
1685                 break;
1686         }
1687         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1688 }
1689
1690 static ssize_t
1691 store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1692 {
1693         struct aiptek *aiptek = dev_get_drvdata(dev);
1694
1695         if (aiptek == NULL)
1696                 return 0;
1697
1698         if (strcmp(buf, "left") == 0) {
1699                 aiptek->newSetting.mouseButtonMiddle = AIPTEK_MOUSE_LEFT_BUTTON;
1700         } else if (strcmp(buf, "middle") == 0) {
1701                 aiptek->newSetting.mouseButtonMiddle =
1702                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1703         } else if (strcmp(buf, "right") == 0) {
1704                 aiptek->newSetting.mouseButtonMiddle =
1705                     AIPTEK_MOUSE_RIGHT_BUTTON;
1706         }
1707         return count;
1708 }
1709
1710 static DEVICE_ATTR(mouse_middle,
1711                    S_IRUGO | S_IWUGO,
1712                    show_tabletMouseMiddle, store_tabletMouseMiddle);
1713
1714 /***********************************************************************
1715  * support routines for the 'mouse_right' file. Note that this file
1716  * both displays current setting and allows for setting changing.
1717  */
1718 static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute *attr, char *buf)
1719 {
1720         struct aiptek *aiptek = dev_get_drvdata(dev);
1721         char *s;
1722
1723         if (aiptek == NULL)
1724                 return 0;
1725
1726         switch (aiptek->curSetting.mouseButtonRight) {
1727         case AIPTEK_MOUSE_LEFT_BUTTON:
1728                 s = "left";
1729                 break;
1730
1731         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1732                 s = "middle";
1733                 break;
1734
1735         case AIPTEK_MOUSE_RIGHT_BUTTON:
1736                 s = "right";
1737                 break;
1738
1739         default:
1740                 s = "unknown";
1741                 break;
1742         }
1743         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1744 }
1745
1746 static ssize_t
1747 store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1748 {
1749         struct aiptek *aiptek = dev_get_drvdata(dev);
1750
1751         if (aiptek == NULL)
1752                 return 0;
1753
1754         if (strcmp(buf, "left") == 0) {
1755                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_LEFT_BUTTON;
1756         } else if (strcmp(buf, "middle") == 0) {
1757                 aiptek->newSetting.mouseButtonRight =
1758                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1759         } else if (strcmp(buf, "right") == 0) {
1760                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
1761         }
1762         return count;
1763 }
1764
1765 static DEVICE_ATTR(mouse_right,
1766                    S_IRUGO | S_IWUGO,
1767                    show_tabletMouseRight, store_tabletMouseRight);
1768
1769 /***********************************************************************
1770  * support routines for the 'wheel' file. Note that this file
1771  * both displays current setting and allows for setting changing.
1772  */
1773 static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *attr, char *buf)
1774 {
1775         struct aiptek *aiptek = dev_get_drvdata(dev);
1776
1777         if (aiptek == NULL)
1778                 return 0;
1779
1780         if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
1781                 return snprintf(buf, PAGE_SIZE, "disable\n");
1782         } else {
1783                 return snprintf(buf, PAGE_SIZE, "%d\n",
1784                                 aiptek->curSetting.wheel);
1785         }
1786 }
1787
1788 static ssize_t
1789 store_tabletWheel(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1790 {
1791         struct aiptek *aiptek = dev_get_drvdata(dev);
1792
1793         if (aiptek == NULL)
1794                 return 0;
1795
1796         aiptek->newSetting.wheel = (int)simple_strtol(buf, NULL, 10);
1797         return count;
1798 }
1799
1800 static DEVICE_ATTR(wheel,
1801                    S_IRUGO | S_IWUGO, show_tabletWheel, store_tabletWheel);
1802
1803 /***********************************************************************
1804  * support routines for the 'execute' file. Note that this file
1805  * both displays current setting and allows for setting changing.
1806  */
1807 static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *attr, char *buf)
1808 {
1809         struct aiptek *aiptek = dev_get_drvdata(dev);
1810
1811         if (aiptek == NULL)
1812                 return 0;
1813
1814         /* There is nothing useful to display, so a one-line manual
1815          * is in order...
1816          */
1817         return snprintf(buf, PAGE_SIZE,
1818                         "Write anything to this file to program your tablet.\n");
1819 }
1820
1821 static ssize_t
1822 store_tabletExecute(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1823 {
1824         struct aiptek *aiptek = dev_get_drvdata(dev);
1825
1826         if (aiptek == NULL)
1827                 return 0;
1828
1829         /* We do not care what you write to this file. Merely the action
1830          * of writing to this file triggers a tablet reprogramming.
1831          */
1832         memcpy(&aiptek->curSetting, &aiptek->newSetting,
1833                sizeof(struct aiptek_settings));
1834
1835         if (aiptek_program_tablet(aiptek) < 0)
1836                 return -EIO;
1837
1838         return count;
1839 }
1840
1841 static DEVICE_ATTR(execute,
1842                    S_IRUGO | S_IWUGO, show_tabletExecute, store_tabletExecute);
1843
1844 /***********************************************************************
1845  * support routines for the 'odm_code' file. Note that this file
1846  * only displays current setting.
1847  */
1848 static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *attr, char *buf)
1849 {
1850         struct aiptek *aiptek = dev_get_drvdata(dev);
1851
1852         if (aiptek == NULL)
1853                 return 0;
1854
1855         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
1856 }
1857
1858 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
1859
1860 /***********************************************************************
1861  * support routines for the 'model_code' file. Note that this file
1862  * only displays current setting.
1863  */
1864 static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute *attr, char *buf)
1865 {
1866         struct aiptek *aiptek = dev_get_drvdata(dev);
1867
1868         if (aiptek == NULL)
1869                 return 0;
1870
1871         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
1872 }
1873
1874 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
1875
1876 /***********************************************************************
1877  * support routines for the 'firmware_code' file. Note that this file
1878  * only displays current setting.
1879  */
1880 static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *attr, char *buf)
1881 {
1882         struct aiptek *aiptek = dev_get_drvdata(dev);
1883
1884         if (aiptek == NULL)
1885                 return 0;
1886
1887         return snprintf(buf, PAGE_SIZE, "%04x\n",
1888                         aiptek->features.firmwareCode);
1889 }
1890
1891 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
1892
1893 /***********************************************************************
1894  * This routine removes all existing sysfs files managed by this device
1895  * driver.
1896  */
1897 static void aiptek_delete_files(struct device *dev)
1898 {
1899         device_remove_file(dev, &dev_attr_size);
1900         device_remove_file(dev, &dev_attr_product_id);
1901         device_remove_file(dev, &dev_attr_vendor_id);
1902         device_remove_file(dev, &dev_attr_vendor);
1903         device_remove_file(dev, &dev_attr_product);
1904         device_remove_file(dev, &dev_attr_pointer_mode);
1905         device_remove_file(dev, &dev_attr_coordinate_mode);
1906         device_remove_file(dev, &dev_attr_tool_mode);
1907         device_remove_file(dev, &dev_attr_xtilt);
1908         device_remove_file(dev, &dev_attr_ytilt);
1909         device_remove_file(dev, &dev_attr_jitter);
1910         device_remove_file(dev, &dev_attr_delay);
1911         device_remove_file(dev, &dev_attr_input_path);
1912         device_remove_file(dev, &dev_attr_event_count);
1913         device_remove_file(dev, &dev_attr_diagnostic);
1914         device_remove_file(dev, &dev_attr_odm_code);
1915         device_remove_file(dev, &dev_attr_model_code);
1916         device_remove_file(dev, &dev_attr_firmware_code);
1917         device_remove_file(dev, &dev_attr_stylus_lower);
1918         device_remove_file(dev, &dev_attr_stylus_upper);
1919         device_remove_file(dev, &dev_attr_mouse_left);
1920         device_remove_file(dev, &dev_attr_mouse_middle);
1921         device_remove_file(dev, &dev_attr_mouse_right);
1922         device_remove_file(dev, &dev_attr_wheel);
1923         device_remove_file(dev, &dev_attr_execute);
1924 }
1925
1926 /***********************************************************************
1927  * This routine creates the sysfs files managed by this device
1928  * driver.
1929  */
1930 static int aiptek_add_files(struct device *dev)
1931 {
1932         int ret;
1933
1934         if ((ret = device_create_file(dev, &dev_attr_size)) ||
1935             (ret = device_create_file(dev, &dev_attr_product_id)) ||
1936             (ret = device_create_file(dev, &dev_attr_vendor_id)) ||
1937             (ret = device_create_file(dev, &dev_attr_vendor)) ||
1938             (ret = device_create_file(dev, &dev_attr_product)) ||
1939             (ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
1940             (ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
1941             (ret = device_create_file(dev, &dev_attr_tool_mode)) ||
1942             (ret = device_create_file(dev, &dev_attr_xtilt)) ||
1943             (ret = device_create_file(dev, &dev_attr_ytilt)) ||
1944             (ret = device_create_file(dev, &dev_attr_jitter)) ||
1945             (ret = device_create_file(dev, &dev_attr_delay)) ||
1946             (ret = device_create_file(dev, &dev_attr_input_path)) ||
1947             (ret = device_create_file(dev, &dev_attr_event_count)) ||
1948             (ret = device_create_file(dev, &dev_attr_diagnostic)) ||
1949             (ret = device_create_file(dev, &dev_attr_odm_code)) ||
1950             (ret = device_create_file(dev, &dev_attr_model_code)) ||
1951             (ret = device_create_file(dev, &dev_attr_firmware_code)) ||
1952             (ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
1953             (ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
1954             (ret = device_create_file(dev, &dev_attr_mouse_left)) ||
1955             (ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
1956             (ret = device_create_file(dev, &dev_attr_mouse_right)) ||
1957             (ret = device_create_file(dev, &dev_attr_wheel)) ||
1958             (ret = device_create_file(dev, &dev_attr_execute))) {
1959                 err("aiptek: killing own sysfs device files\n");
1960                 aiptek_delete_files(dev);
1961         }
1962         return ret;
1963 }
1964
1965 /***********************************************************************
1966  * This routine is called when a tablet has been identified. It basically
1967  * sets up the tablet and the driver's internal structures.
1968  */
1969 static int
1970 aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
1971 {
1972         struct usb_device *usbdev = interface_to_usbdev(intf);
1973         struct usb_endpoint_descriptor *endpoint;
1974         struct aiptek *aiptek;
1975         struct input_dev *inputdev;
1976         struct input_handle *inputhandle;
1977         struct list_head *node, *next;
1978         int i;
1979         int speeds[] = { 0,
1980                 AIPTEK_PROGRAMMABLE_DELAY_50,
1981                 AIPTEK_PROGRAMMABLE_DELAY_400,
1982                 AIPTEK_PROGRAMMABLE_DELAY_25,
1983                 AIPTEK_PROGRAMMABLE_DELAY_100,
1984                 AIPTEK_PROGRAMMABLE_DELAY_200,
1985                 AIPTEK_PROGRAMMABLE_DELAY_300
1986         };
1987
1988         /* programmableDelay is where the command-line specified
1989          * delay is kept. We make it the first element of speeds[],
1990          * so therefore, your override speed is tried first, then the
1991          * remainder. Note that the default value of 400ms will be tried
1992          * if you do not specify any command line parameter.
1993          */
1994         speeds[0] = programmableDelay;
1995
1996         aiptek = kzalloc(sizeof(struct aiptek), GFP_KERNEL);
1997         inputdev = input_allocate_device();
1998         if (!aiptek || !inputdev)
1999                 goto fail1;
2000
2001         aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
2002                                         SLAB_ATOMIC, &aiptek->data_dma);
2003         if (!aiptek->data)
2004                 goto fail1;
2005
2006         aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
2007         if (!aiptek->urb)
2008                 goto fail2;
2009
2010         aiptek->inputdev = inputdev;
2011         aiptek->usbdev = usbdev;
2012         aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
2013         aiptek->inDelay = 0;
2014         aiptek->endDelay = 0;
2015         aiptek->previousJitterable = 0;
2016
2017         /* Set up the curSettings struct. Said struct contains the current
2018          * programmable parameters. The newSetting struct contains changes
2019          * the user makes to the settings via the sysfs interface. Those
2020          * changes are not "committed" to curSettings until the user
2021          * writes to the sysfs/.../execute file.
2022          */
2023         aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
2024         aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
2025         aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
2026         aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
2027         aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
2028         aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
2029         aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
2030         aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
2031         aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
2032         aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
2033         aiptek->curSetting.jitterDelay = jitterDelay;
2034         aiptek->curSetting.programmableDelay = programmableDelay;
2035
2036         /* Both structs should have equivalent settings
2037          */
2038         aiptek->newSetting = aiptek->curSetting;
2039
2040         /* Determine the usb devices' physical path.
2041          * Asketh not why we always pretend we're using "../input0",
2042          * but I suspect this will have to be refactored one
2043          * day if a single USB device can be a keyboard & a mouse
2044          * & a tablet, and the inputX number actually will tell
2045          * us something...
2046          */
2047         usb_make_path(usbdev, aiptek->features.usbPath,
2048                         sizeof(aiptek->features.usbPath));
2049         strlcat(aiptek->features.usbPath, "/input0",
2050                 sizeof(aiptek->features.usbPath));
2051
2052         /* Set up client data, pointers to open and close routines
2053          * for the input device.
2054          */
2055         inputdev->name = "Aiptek";
2056         inputdev->phys = aiptek->features.usbPath;
2057         usb_to_input_id(usbdev, &inputdev->id);
2058         inputdev->cdev.dev = &intf->dev;
2059         inputdev->private = aiptek;
2060         inputdev->open = aiptek_open;
2061         inputdev->close = aiptek_close;
2062
2063         /* Now program the capacities of the tablet, in terms of being
2064          * an input device.
2065          */
2066         inputdev->evbit[0] |= BIT(EV_KEY)
2067             | BIT(EV_ABS)
2068             | BIT(EV_REL)
2069             | BIT(EV_MSC);
2070
2071         inputdev->absbit[0] |= BIT(ABS_MISC);
2072
2073         inputdev->relbit[0] |=
2074             (BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL) | BIT(REL_MISC));
2075
2076         inputdev->keybit[LONG(BTN_LEFT)] |=
2077             (BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE));
2078
2079         inputdev->keybit[LONG(BTN_DIGI)] |=
2080             (BIT(BTN_TOOL_PEN) |
2081              BIT(BTN_TOOL_RUBBER) |
2082              BIT(BTN_TOOL_PENCIL) |
2083              BIT(BTN_TOOL_AIRBRUSH) |
2084              BIT(BTN_TOOL_BRUSH) |
2085              BIT(BTN_TOOL_MOUSE) |
2086              BIT(BTN_TOOL_LENS) |
2087              BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2));
2088
2089         inputdev->mscbit[0] = BIT(MSC_SERIAL);
2090
2091         /* Programming the tablet macro keys needs to be done with a for loop
2092          * as the keycodes are discontiguous.
2093          */
2094         for (i = 0; i < ARRAY_SIZE(macroKeyEvents); ++i)
2095                 set_bit(macroKeyEvents[i], inputdev->keybit);
2096
2097         /*
2098          * Program the input device coordinate capacities. We do not yet
2099          * know what maximum X, Y, and Z values are, so we're putting fake
2100          * values in. Later, we'll ask the tablet to put in the correct
2101          * values.
2102          */
2103         input_set_abs_params(inputdev, ABS_X, 0, 2999, 0, 0);
2104         input_set_abs_params(inputdev, ABS_Y, 0, 2249, 0, 0);
2105         input_set_abs_params(inputdev, ABS_PRESSURE, 0, 511, 0, 0);
2106         input_set_abs_params(inputdev, ABS_TILT_X, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
2107         input_set_abs_params(inputdev, ABS_TILT_Y, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
2108         input_set_abs_params(inputdev, ABS_WHEEL, AIPTEK_WHEEL_MIN, AIPTEK_WHEEL_MAX - 1, 0, 0);
2109
2110         endpoint = &intf->altsetting[0].endpoint[0].desc;
2111
2112         /* Go set up our URB, which is called when the tablet receives
2113          * input.
2114          */
2115         usb_fill_int_urb(aiptek->urb,
2116                          aiptek->usbdev,
2117                          usb_rcvintpipe(aiptek->usbdev,
2118                                         endpoint->bEndpointAddress),
2119                          aiptek->data, 8, aiptek_irq, aiptek,
2120                          endpoint->bInterval);
2121
2122         aiptek->urb->transfer_dma = aiptek->data_dma;
2123         aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2124
2125         /* Program the tablet. This sets the tablet up in the mode
2126          * specified in newSetting, and also queries the tablet's
2127          * physical capacities.
2128          *
2129          * Sanity check: if a tablet doesn't like the slow programmatic
2130          * delay, we often get sizes of 0x0. Let's use that as an indicator
2131          * to try faster delays, up to 25 ms. If that logic fails, well, you'll
2132          * have to explain to us how your tablet thinks it's 0x0, and yet that's
2133          * not an error :-)
2134          */
2135
2136         for (i = 0; i < ARRAY_SIZE(speeds); ++i) {
2137                 aiptek->curSetting.programmableDelay = speeds[i];
2138                 (void)aiptek_program_tablet(aiptek);
2139                 if (aiptek->inputdev->absmax[ABS_X] > 0) {
2140                         info("input: Aiptek using %d ms programming speed\n",
2141                              aiptek->curSetting.programmableDelay);
2142                         break;
2143                 }
2144         }
2145
2146         /* Register the tablet as an Input Device
2147          */
2148         input_register_device(aiptek->inputdev);
2149
2150         /* We now will look for the evdev device which is mapped to
2151          * the tablet. The partial name is kept in the link list of
2152          * input_handles associated with this input device.
2153          * What identifies an evdev input_handler is that it begins
2154          * with 'event', continues with a digit, and that in turn
2155          * is mapped to input/eventN.
2156          */
2157         list_for_each_safe(node, next, &inputdev->h_list) {
2158                 inputhandle = to_handle(node);
2159                 if (strncmp(inputhandle->name, "event", 5) == 0) {
2160                         strcpy(aiptek->features.inputPath, inputhandle->name);
2161                         break;
2162                 }
2163         }
2164
2165         /* Associate this driver's struct with the usb interface.
2166          */
2167         usb_set_intfdata(intf, aiptek);
2168
2169         /* Set up the sysfs files
2170          */
2171         aiptek_add_files(&intf->dev);
2172
2173         /* Make sure the evdev module is loaded. Assuming evdev IS a module :-)
2174          */
2175         if (request_module("evdev") != 0)
2176                 info("aiptek: error loading 'evdev' module");
2177
2178         return 0;
2179
2180 fail2:  usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
2181                         aiptek->data_dma);
2182 fail1:  input_free_device(inputdev);
2183         kfree(aiptek);
2184         return -ENOMEM;
2185 }
2186
2187 /* Forward declaration */
2188 static void aiptek_disconnect(struct usb_interface *intf);
2189
2190 static struct usb_driver aiptek_driver = {
2191         .name = "aiptek",
2192         .probe = aiptek_probe,
2193         .disconnect = aiptek_disconnect,
2194         .id_table = aiptek_ids,
2195 };
2196
2197 /***********************************************************************
2198  * Deal with tablet disconnecting from the system.
2199  */
2200 static void aiptek_disconnect(struct usb_interface *intf)
2201 {
2202         struct aiptek *aiptek = usb_get_intfdata(intf);
2203
2204         /* Disassociate driver's struct with usb interface
2205          */
2206         usb_set_intfdata(intf, NULL);
2207         if (aiptek != NULL) {
2208                 /* Free & unhook everything from the system.
2209                  */
2210                 usb_kill_urb(aiptek->urb);
2211                 input_unregister_device(aiptek->inputdev);
2212                 aiptek_delete_files(&intf->dev);
2213                 usb_free_urb(aiptek->urb);
2214                 usb_buffer_free(interface_to_usbdev(intf),
2215                                 AIPTEK_PACKET_LENGTH,
2216                                 aiptek->data, aiptek->data_dma);
2217                 kfree(aiptek);
2218         }
2219 }
2220
2221 static int __init aiptek_init(void)
2222 {
2223         int result = usb_register(&aiptek_driver);
2224         if (result == 0) {
2225                 info(DRIVER_VERSION ": " DRIVER_AUTHOR);
2226                 info(DRIVER_DESC);
2227         }
2228         return result;
2229 }
2230
2231 static void __exit aiptek_exit(void)
2232 {
2233         usb_deregister(&aiptek_driver);
2234 }
2235
2236 MODULE_AUTHOR(DRIVER_AUTHOR);
2237 MODULE_DESCRIPTION(DRIVER_DESC);
2238 MODULE_LICENSE("GPL");
2239
2240 module_param(programmableDelay, int, 0);
2241 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
2242 module_param(jitterDelay, int, 0);
2243 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
2244
2245 module_init(aiptek_init);
2246 module_exit(aiptek_exit);