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