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/input.h>
  77 #include <linux/module.h>
  78 #include <linux/init.h>
  79 #include <linux/usb.h>
  80 #include <linux/usb_input.h>
  81 #include <linux/sched.h>
  82 #include <asm/uaccess.h>
  83 #include <asm/unaligned.h>
  84
  85 /*
  86  * Version Information
  87  */
  88 #define DRIVER_VERSION "v1.5 (May-15-2004)"
  89 #define DRIVER_AUTHOR  "Bryan W. Headley/Chris Atenasio"
  90 #define DRIVER_DESC    "Aiptek HyperPen USB Tablet Driver (Linux 2.6.x)"
  91
  92 /*
  93  * Aiptek status packet:
  94  *
  95  * (returned as Report 1 - relative coordinates from mouse and stylus)
  96  *
  97  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
  98  * byte0   0     0     0     0     0     0     0     1
  99  * byte1   0     0     0     0     0    BS2   BS    Tip
 100  * byte2  X7    X6    X5    X4    X3    X2    X1    X0
 101  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 102  *
 103  * (returned as Report 2 - absolute coordinates from the stylus)
 104  *
 105  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 106  * byte0   0     0     0     0     0     0     1     0
 107  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 108  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 109  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 110  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 111  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 112  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 113  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 114  *
 115  * (returned as Report 3 - absolute coordinates from the mouse)
 116  *
 117  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 118  * byte0   0     0     0     0     0     0     1     0
 119  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 120  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 121  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 122  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 123  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 124  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 125  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 126  *
 127  * (returned as Report 4 - macrokeys from the stylus)
 128  *
 129  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 130  * byte0   0     0     0     0     0     1     0     0
 131  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 132  * byte2   0     0     0     0     0     0     1     0
 133  * byte3   0     0     0    K4    K3    K2    K1    K0
 134  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 135  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 136  *
 137  * (returned as Report 5 - macrokeys from the mouse)
 138  *
 139  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 140  * byte0   0     0     0     0     0     1     0     0
 141  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 142  * byte2   0     0     0     0     0     0     1     0
 143  * byte3   0     0     0    K4    K3    K2    K1    K0
 144  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 145  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 146  *
 147  * IR: In Range = Proximity on
 148  * DV = Data Valid
 149  * BS = Barrel Switch (as in, macro keys)
 150  * BS2 also referred to as Tablet Pick
 151  *
 152  * Command Summary:
 153  *
 154  * Use report_type CONTROL (3)
 155  * Use report_id   2
 156  *
 157  * Command/Data    Description     Return Bytes    Return Value
 158  * 0x10/0x00       SwitchToMouse       0
 159  * 0x10/0x01       SwitchToTablet      0
 160  * 0x18/0x04       SetResolution       0
 161  * 0x12/0xFF       AutoGainOn          0
 162  * 0x17/0x00       FilterOn            0
 163  * 0x01/0x00       GetXExtension       2           MaxX
 164  * 0x01/0x01       GetYExtension       2           MaxY
 165  * 0x02/0x00       GetModelCode        2           ModelCode = LOBYTE
 166  * 0x03/0x00       GetODMCode          2           ODMCode
 167  * 0x08/0x00       GetPressureLevels   2           =512
 168  * 0x04/0x00       GetFirmwareVersion  2           Firmware Version
 169  * 0x11/0x02       EnableMacroKeys     0
 170  *
 171  * To initialize the tablet:
 172  *
 173  * (1) Send Resolution500LPI (Command)
 174  * (2) Query for Model code (Option Report)
 175  * (3) Query for ODM code (Option Report)
 176  * (4) Query for firmware (Option Report)
 177  * (5) Query for GetXExtension (Option Report)
 178  * (6) Query for GetYExtension (Option Report)
 179  * (7) Query for GetPressureLevels (Option Report)
 180  * (8) SwitchToTablet for Absolute coordinates, or
 181  *     SwitchToMouse for Relative coordinates (Command)
 182  * (9) EnableMacroKeys (Command)
 183  * (10) FilterOn (Command)
 184  * (11) AutoGainOn (Command)
 185  *
 186  * (Step 9 can be omitted, but you'll then have no function keys.)
 187  */
 188
 189 #define USB_VENDOR_ID_AIPTEK                            0x08ca
 190 #define USB_REQ_GET_REPORT                              0x01
 191 #define USB_REQ_SET_REPORT                              0x09
 192
 193         /* PointerMode codes
 194          */
 195 #define AIPTEK_POINTER_ONLY_MOUSE_MODE                  0
 196 #define AIPTEK_POINTER_ONLY_STYLUS_MODE                 1
 197 #define AIPTEK_POINTER_EITHER_MODE                      2
 198
 199 #define AIPTEK_POINTER_ALLOW_MOUSE_MODE(a)              \
 200         (a == AIPTEK_POINTER_ONLY_MOUSE_MODE ||         \
 201          a == AIPTEK_POINTER_EITHER_MODE)
 202 #define AIPTEK_POINTER_ALLOW_STYLUS_MODE(a)             \
 203         (a == AIPTEK_POINTER_ONLY_STYLUS_MODE ||        \
 204          a == AIPTEK_POINTER_EITHER_MODE)
 205
 206         /* CoordinateMode code
 207          */
 208 #define AIPTEK_COORDINATE_RELATIVE_MODE                 0
 209 #define AIPTEK_COORDINATE_ABSOLUTE_MODE                 1
 210
 211        /* XTilt and YTilt values
 212         */
 213 #define AIPTEK_TILT_MIN                                 (-128)
 214 #define AIPTEK_TILT_MAX                                 127
 215 #define AIPTEK_TILT_DISABLE                             (-10101)
 216
 217         /* Wheel values
 218          */
 219 #define AIPTEK_WHEEL_MIN                                0
 220 #define AIPTEK_WHEEL_MAX                                1024
 221 #define AIPTEK_WHEEL_DISABLE                            (-10101)
 222
 223         /* ToolCode values, which BTW are 0x140 .. 0x14f
 224          * We have things set up such that if TOOL_BUTTON_FIRED_BIT is
 225          * not set, we'll send one instance of AIPTEK_TOOL_BUTTON_xxx.
 226          *
 227          * Whenever the user resets the value, TOOL_BUTTON_FIRED_BIT will
 228          * get reset.
 229          */
 230 #define TOOL_BUTTON(x)                                  ((x) & 0x14f)
 231 #define TOOL_BUTTON_FIRED(x)                            ((x) & 0x200)
 232 #define TOOL_BUTTON_FIRED_BIT                           0x200
 233         /* toolMode codes
 234          */
 235 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 236 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 237 #define AIPTEK_TOOL_BUTTON_PENCIL_MODE                  BTN_TOOL_PENCIL
 238 #define AIPTEK_TOOL_BUTTON_BRUSH_MODE                   BTN_TOOL_BRUSH
 239 #define AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE                BTN_TOOL_AIRBRUSH
 240 #define AIPTEK_TOOL_BUTTON_ERASER_MODE                  BTN_TOOL_RUBBER
 241 #define AIPTEK_TOOL_BUTTON_MOUSE_MODE                   BTN_TOOL_MOUSE
 242 #define AIPTEK_TOOL_BUTTON_LENS_MODE                    BTN_TOOL_LENS
 243
 244         /* Diagnostic message codes
 245          */
 246 #define AIPTEK_DIAGNOSTIC_NA                            0
 247 #define AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE  1
 248 #define AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE  2
 249 #define AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED               3
 250
 251         /* Time to wait (in ms) to help mask hand jittering
 252          * when pressing the stylus buttons.
 253          */
 254 #define AIPTEK_JITTER_DELAY_DEFAULT                     50
 255
 256         /* Time to wait (in ms) in-between sending the tablet
 257          * a command and beginning the process of reading the return
 258          * sequence from the tablet.
 259          */
 260 #define AIPTEK_PROGRAMMABLE_DELAY_25            25
 261 #define AIPTEK_PROGRAMMABLE_DELAY_50            50
 262 #define AIPTEK_PROGRAMMABLE_DELAY_100           100
 263 #define AIPTEK_PROGRAMMABLE_DELAY_200           200
 264 #define AIPTEK_PROGRAMMABLE_DELAY_300           300
 265 #define AIPTEK_PROGRAMMABLE_DELAY_400           400
 266 #define AIPTEK_PROGRAMMABLE_DELAY_DEFAULT       AIPTEK_PROGRAMMABLE_DELAY_400
 267
 268         /* Mouse button programming
 269          */
 270 #define AIPTEK_MOUSE_LEFT_BUTTON                0x01
 271 #define AIPTEK_MOUSE_RIGHT_BUTTON               0x02
 272 #define AIPTEK_MOUSE_MIDDLE_BUTTON              0x04
 273
 274         /* Stylus button programming
 275          */
 276 #define AIPTEK_STYLUS_LOWER_BUTTON              0x08
 277 #define AIPTEK_STYLUS_UPPER_BUTTON              0x10
 278
 279         /* Length of incoming packet from the tablet
 280          */
 281 #define AIPTEK_PACKET_LENGTH                    8
 282
 283         /* We report in EV_MISC both the proximity and
 284          * whether the report came from the stylus, tablet mouse
 285          * or "unknown" -- Unknown when the tablet is in relative
 286          * mode, because we only get report 1's.
 287          */
 288 #define AIPTEK_REPORT_TOOL_UNKNOWN              0x10
 289 #define AIPTEK_REPORT_TOOL_STYLUS               0x20
 290 #define AIPTEK_REPORT_TOOL_MOUSE                0x40
 291
 292 static int programmableDelay = AIPTEK_PROGRAMMABLE_DELAY_DEFAULT;
 293 static int jitterDelay = AIPTEK_JITTER_DELAY_DEFAULT;
 294
 295 struct aiptek_features {
 296         int odmCode;            /* Tablet manufacturer code       */
 297         int modelCode;          /* Tablet model code (not unique) */
 298         int firmwareCode;       /* prom/eeprom version            */
 299         char usbPath[64 + 1];   /* device's physical usb path     */
 300         char inputPath[64 + 1]; /* input device path              */
 301 };
 302
 303 struct aiptek_settings {
 304         int pointerMode;        /* stylus-, mouse-only or either */
 305         int coordinateMode;     /* absolute/relative coords      */
 306         int toolMode;           /* pen, pencil, brush, etc. tool */
 307         int xTilt;              /* synthetic xTilt amount        */
 308         int yTilt;              /* synthetic yTilt amount        */
 309         int wheel;              /* synthetic wheel amount        */
 310         int stylusButtonUpper;  /* stylus upper btn delivers...  */
 311         int stylusButtonLower;  /* stylus lower btn delivers...  */
 312         int mouseButtonLeft;    /* mouse left btn delivers...    */
 313         int mouseButtonMiddle;  /* mouse middle btn delivers...  */
 314         int mouseButtonRight;   /* mouse right btn delivers...   */
 315         int programmableDelay;  /* delay for tablet programming  */
 316         int jitterDelay;        /* delay for hand jittering      */
 317 };
 318
 319 struct aiptek {
 320         struct input_dev inputdev;              /* input device struct           */
 321         struct usb_device *usbdev;              /* usb device struct             */
 322         struct urb *urb;                        /* urb for incoming reports      */
 323         dma_addr_t data_dma;                    /* our dma stuffage              */
 324         struct aiptek_features features;        /* tablet's array of features    */
 325         struct aiptek_settings curSetting;      /* tablet's current programmable */
 326         struct aiptek_settings newSetting;      /* ... and new param settings    */
 327         unsigned int ifnum;                     /* interface number for IO       */
 328         int diagnostic;                         /* tablet diagnostic codes       */
 329         unsigned long eventCount;               /* event count                   */
 330         int inDelay;                            /* jitter: in jitter delay?      */
 331         unsigned long endDelay;                 /* jitter: time when delay ends  */
 332         int previousJitterable;                 /* jitterable prev value     */
 333         unsigned char *data;                    /* incoming packet data          */
 334 };
 335
 336 /*
 337  * Permit easy lookup of keyboard events to send, versus
 338  * the bitmap which comes from the tablet. This hides the
 339  * issue that the F_keys are not sequentially numbered.
 340  */
 341 static int macroKeyEvents[] = {
 342         KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
 343         KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
 344         KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
 345         KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
 346         KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
 347         KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
 348 };
 349
 350 /***********************************************************************
 351  * Relative reports deliver values in 2's complement format to
 352  * deal with negative offsets.
 353  */
 354 static int aiptek_convert_from_2s_complement(unsigned char c)
 355 {
 356         int ret;
 357         unsigned char b = c;
 358         int negate = 0;
 359
 360         if ((b & 0x80) != 0) {
 361                 b = ~b;
 362                 b--;
 363                 negate = 1;
 364         }
 365         ret = b;
 366         ret = (negate == 1) ? -ret : ret;
 367         return ret;
 368 }
 369
 370 /***********************************************************************
 371  * aiptek_irq can receive one of six potential reports.
 372  * The documentation for each is in the body of the function.
 373  *
 374  * The tablet reports on several attributes per invocation of
 375  * aiptek_irq. Because the Linux Input Event system allows the
 376  * transmission of ONE attribute per input_report_xxx() call,
 377  * collation has to be done on the other end to reconstitute
 378  * a complete tablet report. Further, the number of Input Event reports
 379  * submitted varies, depending on what USB report type, and circumstance.
 380  * To deal with this, EV_MSC is used to indicate an 'end-of-report'
 381  * message. This has been an undocumented convention understood by the kernel
 382  * tablet driver and clients such as gpm and XFree86's tablet drivers.
 383  *
 384  * Of the information received from the tablet, the one piece I
 385  * cannot transmit is the proximity bit (without resorting to an EV_MSC
 386  * convention above.) I therefore have taken over REL_MISC and ABS_MISC
 387  * (for relative and absolute reports, respectively) for communicating
 388  * Proximity. Why two events? I thought it interesting to know if the
 389  * Proximity event occurred while the tablet was in absolute or relative
 390  * mode.
 391  *
 392  * Other tablets use the notion of a certain minimum stylus pressure
 393  * to infer proximity. While that could have been done, that is yet
 394  * another 'by convention' behavior, the documentation for which
 395  * would be spread between two (or more) pieces of software.
 396  *
 397  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
 398  * replaced with the input_sync() method (which emits EV_SYN.)
 399  */
 400
 401 static void aiptek_irq(struct urb *urb, struct pt_regs *regs)
 402 {
 403         struct aiptek *aiptek = urb->context;
 404         unsigned char *data = aiptek->data;
 405         struct input_dev *inputdev = &aiptek->inputdev;
 406         int jitterable = 0;
 407         int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
 408
 409         switch (urb->status) {
 410         case 0:
 411                 /* Success */
 412                 break;
 413
 414         case -ECONNRESET:
 415         case -ENOENT:
 416         case -ESHUTDOWN:
 417                 /* This urb is terminated, clean up */
 418                 dbg("%s - urb shutting down with status: %d",
 419                     __FUNCTION__, urb->status);
 420                 return;
 421
 422         default:
 423                 dbg("%s - nonzero urb status received: %d",
 424                     __FUNCTION__, urb->status);
 425                 goto exit;
 426         }
 427
 428         /* See if we are in a delay loop -- throw out report if true.
 429          */
 430         if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
 431                 goto exit;
 432         }
 433
 434         aiptek->inDelay = 0;
 435         aiptek->eventCount++;
 436
 437         /* Report 1 delivers relative coordinates with either a stylus
 438          * or the mouse. You do not know, however, which input
 439          * tool generated the event.
 440          */
 441         if (data[0] == 1) {
 442                 if (aiptek->curSetting.coordinateMode ==
 443                     AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 444                         aiptek->diagnostic =
 445                             AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
 446                 } else {
 447                         input_regs(inputdev, regs);
 448
 449                         x = aiptek_convert_from_2s_complement(data[2]);
 450                         y = aiptek_convert_from_2s_complement(data[3]);
 451
 452                         /* jitterable keeps track of whether any button has been pressed.
 453                          * We're also using it to remap the physical mouse button mask
 454                          * to pseudo-settings. (We don't specifically care about it's
 455                          * value after moving/transposing mouse button bitmasks, except
 456                          * that a non-zero value indicates that one or more
 457                          * mouse button was pressed.)
 458                          */
 459                         jitterable = data[5] & 0x07;
 460
 461                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 462                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 463                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 464
 465                         input_report_key(inputdev, BTN_LEFT, left);
 466                         input_report_key(inputdev, BTN_MIDDLE, middle);
 467                         input_report_key(inputdev, BTN_RIGHT, right);
 468                         input_report_rel(inputdev, REL_X, x);
 469                         input_report_rel(inputdev, REL_Y, y);
 470                         input_report_rel(inputdev, REL_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 471
 472                         /* Wheel support is in the form of a single-event
 473                          * firing.
 474                          */
 475                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 476                                 input_report_rel(inputdev, REL_WHEEL,
 477                                                  aiptek->curSetting.wheel);
 478                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 479                         }
 480                         input_sync(inputdev);
 481                 }
 482         }
 483         /* Report 2 is delivered only by the stylus, and delivers
 484          * absolute coordinates.
 485          */
 486         else if (data[0] == 2) {
 487                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 488                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 489                 } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
 490                             (aiptek->curSetting.pointerMode)) {
 491                                 aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 492                 } else {
 493                         input_regs(inputdev, regs);
 494
 495                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 496                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 497                         z = le16_to_cpu(get_unaligned((__le16 *) (data + 6)));
 498
 499                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 500                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 501                         tip = (data[5] & 0x04) != 0 ? 1 : 0;
 502
 503                         /* Use jitterable to re-arrange button masks
 504                          */
 505                         jitterable = data[5] & 0x18;
 506
 507                         bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 508                         pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 509
 510                         /* dv indicates 'data valid' (e.g., the tablet is in sync
 511                          * and has delivered a "correct" report) We will ignore
 512                          * all 'bad' reports...
 513                          */
 514                         if (dv != 0) {
 515                                 /* If we've not already sent a tool_button_?? code, do
 516                                  * so now. Then set FIRED_BIT so it won't be resent unless
 517                                  * the user forces FIRED_BIT off.
 518                                  */
 519                                 if (TOOL_BUTTON_FIRED
 520                                     (aiptek->curSetting.toolMode) == 0) {
 521                                         input_report_key(inputdev,
 522                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 523                                                          1);
 524                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 525                                 }
 526
 527                                 if (p != 0) {
 528                                         input_report_abs(inputdev, ABS_X, x);
 529                                         input_report_abs(inputdev, ABS_Y, y);
 530                                         input_report_abs(inputdev, ABS_PRESSURE, z);
 531
 532                                         input_report_key(inputdev, BTN_TOUCH, tip);
 533                                         input_report_key(inputdev, BTN_STYLUS, bs);
 534                                         input_report_key(inputdev, BTN_STYLUS2, pck);
 535
 536                                         if (aiptek->curSetting.xTilt !=
 537                                             AIPTEK_TILT_DISABLE) {
 538                                                 input_report_abs(inputdev,
 539                                                                  ABS_TILT_X,
 540                                                                  aiptek->curSetting.xTilt);
 541                                         }
 542                                         if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
 543                                                 input_report_abs(inputdev,
 544                                                                  ABS_TILT_Y,
 545                                                                  aiptek->curSetting.yTilt);
 546                                         }
 547
 548                                         /* Wheel support is in the form of a single-event
 549                                          * firing.
 550                                          */
 551                                         if (aiptek->curSetting.wheel !=
 552                                             AIPTEK_WHEEL_DISABLE) {
 553                                                 input_report_abs(inputdev,
 554                                                                  ABS_WHEEL,
 555                                                                  aiptek->curSetting.wheel);
 556                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 557                                         }
 558                                 }
 559                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
 560                                 input_sync(inputdev);
 561                         }
 562                 }
 563         }
 564         /* Report 3's come from the mouse in absolute mode.
 565          */
 566         else if (data[0] == 3) {
 567                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 568                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 569                 } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
 570                         (aiptek->curSetting.pointerMode)) {
 571                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 572                 } else {
 573                         input_regs(inputdev, regs);
 574                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 575                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 576
 577                         jitterable = data[5] & 0x1c;
 578
 579                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 580                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 581                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 582                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 583                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 584
 585                         if (dv != 0) {
 586                                 /* If we've not already sent a tool_button_?? code, do
 587                                  * so now. Then set FIRED_BIT so it won't be resent unless
 588                                  * the user forces FIRED_BIT off.
 589                                  */
 590                                 if (TOOL_BUTTON_FIRED
 591                                     (aiptek->curSetting.toolMode) == 0) {
 592                                         input_report_key(inputdev,
 593                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 594                                                          1);
 595                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 596                                 }
 597
 598                                 if (p != 0) {
 599                                         input_report_abs(inputdev, ABS_X, x);
 600                                         input_report_abs(inputdev, ABS_Y, y);
 601
 602                                         input_report_key(inputdev, BTN_LEFT, left);
 603                                         input_report_key(inputdev, BTN_MIDDLE, middle);
 604                                         input_report_key(inputdev, BTN_RIGHT, right);
 605
 606                                         /* Wheel support is in the form of a single-event
 607                                          * firing.
 608                                          */
 609                                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 610                                                 input_report_abs(inputdev,
 611                                                                  ABS_WHEEL,
 612                                                                  aiptek->curSetting.wheel);
 613                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 614                                         }
 615                                 }
 616                                 input_report_rel(inputdev, REL_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
 617                                 input_sync(inputdev);
 618                         }
 619                 }
 620         }
 621         /* Report 4s come from the macro keys when pressed by stylus
 622          */
 623         else if (data[0] == 4) {
 624                 jitterable = data[1] & 0x18;
 625
 626                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 627                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 628                 tip = (data[1] & 0x04) != 0 ? 1 : 0;
 629                 bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 630                 pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 631
 632                 macro = data[3];
 633                 z = le16_to_cpu(get_unaligned((__le16 *) (data + 4)));
 634
 635                 if (dv != 0) {
 636                         input_regs(inputdev, regs);
 637
 638                         /* If we've not already sent a tool_button_?? code, do
 639                          * so now. Then set FIRED_BIT so it won't be resent unless
 640                          * the user forces FIRED_BIT off.
 641                          */
 642                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 643                                 input_report_key(inputdev,
 644                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 645                                                  1);
 646                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 647                         }
 648
 649                         if (p != 0) {
 650                                 input_report_key(inputdev, BTN_TOUCH, tip);
 651                                 input_report_key(inputdev, BTN_STYLUS, bs);
 652                                 input_report_key(inputdev, BTN_STYLUS2, pck);
 653                                 input_report_abs(inputdev, ABS_PRESSURE, z);
 654                         }
 655
 656                         /* For safety, we're sending key 'break' codes for the
 657                          * neighboring macro keys.
 658                          */
 659                         if (macro > 0) {
 660                                 input_report_key(inputdev,
 661                                                  macroKeyEvents[macro - 1], 0);
 662                         }
 663                         if (macro < 25) {
 664                                 input_report_key(inputdev,
 665                                                  macroKeyEvents[macro + 1], 0);
 666                         }
 667                         input_report_key(inputdev, macroKeyEvents[macro], p);
 668                         input_report_abs(inputdev, ABS_MISC,
 669                                          p | AIPTEK_REPORT_TOOL_STYLUS);
 670                         input_sync(inputdev);
 671                 }
 672         }
 673         /* Report 5s come from the macro keys when pressed by mouse
 674          */
 675         else if (data[0] == 5) {
 676                 jitterable = data[1] & 0x1c;
 677
 678                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 679                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 680                 left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 681                 right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 682                 middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 683                 macro = data[3];
 684
 685                 if (dv != 0) {
 686                         input_regs(inputdev, regs);
 687
 688                         /* If we've not already sent a tool_button_?? code, do
 689                          * so now. Then set FIRED_BIT so it won't be resent unless
 690                          * the user forces FIRED_BIT off.
 691                          */
 692                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 693                                 input_report_key(inputdev,
 694                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 695                                                  1);
 696                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 697                         }
 698
 699                         if (p != 0) {
 700                                 input_report_key(inputdev, BTN_LEFT, left);
 701                                 input_report_key(inputdev, BTN_MIDDLE, middle);
 702                                 input_report_key(inputdev, BTN_RIGHT, right);
 703                         }
 704
 705                         /* For safety, we're sending key 'break' codes for the
 706                          * neighboring macro keys.
 707                          */
 708                         if (macro > 0) {
 709                                 input_report_key(inputdev,
 710                                                  macroKeyEvents[macro - 1], 0);
 711                         }
 712                         if (macro < 25) {
 713                                 input_report_key(inputdev,
 714                                                  macroKeyEvents[macro + 1], 0);
 715                         }
 716
 717                         input_report_key(inputdev, macroKeyEvents[macro], 1);
 718                         input_report_rel(inputdev, ABS_MISC,
 719                                          p | AIPTEK_REPORT_TOOL_MOUSE);
 720                         input_sync(inputdev);
 721                 }
 722         }
 723         /* We have no idea which tool can generate a report 6. Theoretically,
 724          * neither need to, having been given reports 4 & 5 for such use.
 725          * However, report 6 is the 'official-looking' report for macroKeys;
 726          * reports 4 & 5 supposively are used to support unnamed, unknown
 727          * hat switches (which just so happen to be the macroKeys.)
 728          */
 729         else if (data[0] == 6) {
 730                 macro = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 731                 input_regs(inputdev, regs);
 732
 733                 if (macro > 0) {
 734                         input_report_key(inputdev, macroKeyEvents[macro - 1],
 735                                          0);
 736                 }
 737                 if (macro < 25) {
 738                         input_report_key(inputdev, macroKeyEvents[macro + 1],
 739                                          0);
 740                 }
 741
 742                 /* If we've not already sent a tool_button_?? code, do
 743                  * so now. Then set FIRED_BIT so it won't be resent unless
 744                  * the user forces FIRED_BIT off.
 745                  */
 746                 if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 747                         input_report_key(inputdev,
 748                                          TOOL_BUTTON(aiptek->curSetting.
 749                                                      toolMode), 1);
 750                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 751                 }
 752
 753                 input_report_key(inputdev, macroKeyEvents[macro], 1);
 754                 input_report_abs(inputdev, ABS_MISC,
 755                                  1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 756                 input_sync(inputdev);
 757         } else {
 758                 dbg("Unknown report %d", data[0]);
 759         }
 760
 761         /* Jitter may occur when the user presses a button on the stlyus
 762          * or the mouse. What we do to prevent that is wait 'x' milliseconds
 763          * following a 'jitterable' event, which should give the hand some time
 764          * stabilize itself.
 765          *
 766          * We just introduced aiptek->previousJitterable to carry forth the
 767          * notion that jitter occurs when the button state changes from on to off:
 768          * a person drawing, holding a button down is not subject to jittering.
 769          * With that in mind, changing from upper button depressed to lower button
 770          * WILL transition through a jitter delay.
 771          */
 772
 773         if (aiptek->previousJitterable != jitterable &&
 774             aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
 775                 aiptek->endDelay = jiffies +
 776                     ((aiptek->curSetting.jitterDelay * HZ) / 1000);
 777                 aiptek->inDelay = 1;
 778         }
 779         aiptek->previousJitterable = jitterable;
 780
 781 exit:
 782         retval = usb_submit_urb(urb, GFP_ATOMIC);
 783         if (retval != 0) {
 784                 err("%s - usb_submit_urb failed with result %d",
 785                     __FUNCTION__, retval);
 786         }
 787 }
 788
 789 /***********************************************************************
 790  * These are the USB id's known so far. We do not identify them to
 791  * specific Aiptek model numbers, because there has been overlaps,
 792  * use, and reuse of id's in existing models. Certain models have
 793  * been known to use more than one ID, indicative perhaps of
 794  * manufacturing revisions. In any event, we consider these
 795  * IDs to not be model-specific nor unique.
 796  */
 797 static const struct usb_device_id aiptek_ids[] = {
 798         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
 799         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
 800         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
 801         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
 802         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
 803         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
 804         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
 805         {}
 806 };
 807
 808 MODULE_DEVICE_TABLE(usb, aiptek_ids);
 809
 810 /***********************************************************************
 811  * Open an instance of the tablet driver.
 812  */
 813 static int aiptek_open(struct input_dev *inputdev)
 814 {
 815         struct aiptek *aiptek = inputdev->private;
 816
 817         aiptek->urb->dev = aiptek->usbdev;
 818         if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0)
 819                 return -EIO;
 820
 821         return 0;
 822 }
 823
 824 /***********************************************************************
 825  * Close an instance of the tablet driver.
 826  */
 827 static void aiptek_close(struct input_dev *inputdev)
 828 {
 829         struct aiptek *aiptek = inputdev->private;
 830
 831         usb_kill_urb(aiptek->urb);
 832 }
 833
 834 /***********************************************************************
 835  * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
 836  * where they were known as usb_set_report and usb_get_report.
 837  */
 838 static int
 839 aiptek_set_report(struct aiptek *aiptek,
 840                   unsigned char report_type,
 841                   unsigned char report_id, void *buffer, int size)
 842 {
 843         return usb_control_msg(aiptek->usbdev,
 844                                usb_sndctrlpipe(aiptek->usbdev, 0),
 845                                USB_REQ_SET_REPORT,
 846                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 847                                USB_DIR_OUT, (report_type << 8) + report_id,
 848                                aiptek->ifnum, buffer, size, 5000);
 849 }
 850
 851 static int
 852 aiptek_get_report(struct aiptek *aiptek,
 853                   unsigned char report_type,
 854                   unsigned char report_id, void *buffer, int size)
 855 {
 856         return usb_control_msg(aiptek->usbdev,
 857                                usb_rcvctrlpipe(aiptek->usbdev, 0),
 858                                USB_REQ_GET_REPORT,
 859                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 860                                USB_DIR_IN, (report_type << 8) + report_id,
 861                                aiptek->ifnum, buffer, size, 5000);
 862 }
 863
 864 /***********************************************************************
 865  * Send a command to the tablet.
 866  */
 867 static int
 868 aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
 869 {
 870         const int sizeof_buf = 3 * sizeof(u8);
 871         int ret;
 872         u8 *buf;
 873
 874         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 875         if (!buf)
 876                 return -ENOMEM;
 877
 878         buf[0] = 2;
 879         buf[1] = command;
 880         buf[2] = data;
 881
 882         if ((ret =
 883              aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 884                 dbg("aiptek_program: failed, tried to send: 0x%02x 0x%02x",
 885                     command, data);
 886         }
 887         kfree(buf);
 888         return ret < 0 ? ret : 0;
 889 }
 890
 891 /***********************************************************************
 892  * Retrieve information from the tablet. Querying info is defined as first
 893  * sending the {command,data} sequence as a command, followed by a wait
 894  * (aka, "programmaticDelay") and then a "read" request.
 895  */
 896 static int
 897 aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
 898 {
 899         const int sizeof_buf = 3 * sizeof(u8);
 900         int ret;
 901         u8 *buf;
 902
 903         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 904         if (!buf)
 905                 return -ENOMEM;
 906
 907         buf[0] = 2;
 908         buf[1] = command;
 909         buf[2] = data;
 910
 911         if (aiptek_command(aiptek, command, data) != 0) {
 912                 kfree(buf);
 913                 return -EIO;
 914         }
 915         msleep(aiptek->curSetting.programmableDelay);
 916
 917         if ((ret =
 918              aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 919                 dbg("aiptek_query failed: returned 0x%02x 0x%02x 0x%02x",
 920                     buf[0], buf[1], buf[2]);
 921                 ret = -EIO;
 922         } else {
 923                 ret = le16_to_cpu(get_unaligned((__le16 *) (buf + 1)));
 924         }
 925         kfree(buf);
 926         return ret;
 927 }
 928
 929 /***********************************************************************
 930  * Program the tablet into either absolute or relative mode.
 931  * We also get information about the tablet's size.
 932  */
 933 static int aiptek_program_tablet(struct aiptek *aiptek)
 934 {
 935         int ret;
 936         /* Execute Resolution500LPI */
 937         if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
 938                 return ret;
 939
 940         /* Query getModelCode */
 941         if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
 942                 return ret;
 943         aiptek->features.modelCode = ret & 0xff;
 944
 945         /* Query getODMCode */
 946         if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
 947                 return ret;
 948         aiptek->features.odmCode = ret;
 949
 950         /* Query getFirmwareCode */
 951         if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
 952                 return ret;
 953         aiptek->features.firmwareCode = ret;
 954
 955         /* Query getXextension */
 956         if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
 957                 return ret;
 958         aiptek->inputdev.absmin[ABS_X] = 0;
 959         aiptek->inputdev.absmax[ABS_X] = ret - 1;
 960
 961         /* Query getYextension */
 962         if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
 963                 return ret;
 964         aiptek->inputdev.absmin[ABS_Y] = 0;
 965         aiptek->inputdev.absmax[ABS_Y] = ret - 1;
 966
 967         /* Query getPressureLevels */
 968         if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
 969                 return ret;
 970         aiptek->inputdev.absmin[ABS_PRESSURE] = 0;
 971         aiptek->inputdev.absmax[ABS_PRESSURE] = ret - 1;
 972
 973         /* Depending on whether we are in absolute or relative mode, we will
 974          * do a switchToTablet(absolute) or switchToMouse(relative) command.
 975          */
 976         if (aiptek->curSetting.coordinateMode ==
 977             AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 978                 /* Execute switchToTablet */
 979                 if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
 980                         return ret;
 981                 }
 982         } else {
 983                 /* Execute switchToMouse */
 984                 if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
 985                         return ret;
 986                 }
 987         }
 988
 989         /* Enable the macro keys */
 990         if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
 991                 return ret;
 992 #if 0
 993         /* Execute FilterOn */
 994         if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
 995                 return ret;
 996 #endif
 997
 998         /* Execute AutoGainOn */
 999         if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
1000                 return ret;
1001
1002         /* Reset the eventCount, so we track events from last (re)programming
1003          */
1004         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
1005         aiptek->eventCount = 0;
1006
1007         return 0;
1008 }
1009
1010 /***********************************************************************
1011  * Sysfs functions. Sysfs prefers that individually-tunable parameters
1012  * exist in their separate pseudo-files. Summary data that is immutable
1013  * may exist in a singular file so long as you don't define a writeable
1014  * interface.
1015  */
1016
1017 /***********************************************************************
1018  * support the 'size' file -- display support
1019  */
1020 static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
1021 {
1022         struct aiptek *aiptek = dev_get_drvdata(dev);
1023
1024         if (aiptek == NULL)
1025                 return 0;
1026
1027         return snprintf(buf, PAGE_SIZE, "%dx%d\n",
1028                         aiptek->inputdev.absmax[ABS_X] + 1,
1029                         aiptek->inputdev.absmax[ABS_Y] + 1);
1030 }
1031
1032 /* These structs define the sysfs files, param #1 is the name of the
1033  * file, param 2 is the file permissions, param 3 & 4 are to the
1034  * output generator and input parser routines. Absence of a routine is
1035  * permitted -- it only means can't either 'cat' the file, or send data
1036  * to it.
1037  */
1038 static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
1039
1040 /***********************************************************************
1041  * support routines for the 'product_id' file
1042  */
1043 static ssize_t show_tabletProductId(struct device *dev, struct device_attribute *attr, char *buf)
1044 {
1045         struct aiptek *aiptek = dev_get_drvdata(dev);
1046
1047         if (aiptek == NULL)
1048                 return 0;
1049
1050         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
1051                         aiptek->inputdev.id.product);
1052 }
1053
1054 static DEVICE_ATTR(product_id, S_IRUGO, show_tabletProductId, NULL);
1055
1056 /***********************************************************************
1057  * support routines for the 'vendor_id' file
1058  */
1059 static ssize_t show_tabletVendorId(struct device *dev, struct device_attribute *attr, char *buf)
1060 {
1061         struct aiptek *aiptek = dev_get_drvdata(dev);
1062
1063         if (aiptek == NULL)
1064                 return 0;
1065
1066         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->inputdev.id.vendor);
1067 }
1068
1069 static DEVICE_ATTR(vendor_id, S_IRUGO, show_tabletVendorId, NULL);
1070
1071 /***********************************************************************
1072  * support routines for the 'vendor' file
1073  */
1074 static ssize_t show_tabletManufacturer(struct device *dev, struct device_attribute *attr, char *buf)
1075 {
1076         struct aiptek *aiptek = dev_get_drvdata(dev);
1077         int retval;
1078
1079         if (aiptek == NULL)
1080                 return 0;
1081
1082         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->manufacturer);
1083         return retval;
1084 }
1085
1086 static DEVICE_ATTR(vendor, S_IRUGO, show_tabletManufacturer, NULL);
1087
1088 /***********************************************************************
1089  * support routines for the 'product' file
1090  */
1091 static ssize_t show_tabletProduct(struct device *dev, struct device_attribute *attr, char *buf)
1092 {
1093         struct aiptek *aiptek = dev_get_drvdata(dev);
1094         int retval;
1095
1096         if (aiptek == NULL)
1097                 return 0;
1098
1099         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->product);
1100         return retval;
1101 }
1102
1103 static DEVICE_ATTR(product, S_IRUGO, show_tabletProduct, NULL);
1104
1105 /***********************************************************************
1106  * support routines for the 'pointer_mode' file. Note that this file
1107  * both displays current setting and allows reprogramming.
1108  */
1109 static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
1110 {
1111         struct aiptek *aiptek = dev_get_drvdata(dev);
1112         char *s;
1113
1114         if (aiptek == NULL)
1115                 return 0;
1116
1117         switch (aiptek->curSetting.pointerMode) {
1118         case AIPTEK_POINTER_ONLY_STYLUS_MODE:
1119                 s = "stylus";
1120                 break;
1121
1122         case AIPTEK_POINTER_ONLY_MOUSE_MODE:
1123                 s = "mouse";
1124                 break;
1125
1126         case AIPTEK_POINTER_EITHER_MODE:
1127                 s = "either";
1128                 break;
1129
1130         default:
1131                 s = "unknown";
1132                 break;
1133         }
1134         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1135 }
1136
1137 static ssize_t
1138 store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1139 {
1140         struct aiptek *aiptek = dev_get_drvdata(dev);
1141         if (aiptek == NULL)
1142                 return 0;
1143
1144         if (strcmp(buf, "stylus") == 0) {
1145                 aiptek->newSetting.pointerMode =
1146                     AIPTEK_POINTER_ONLY_STYLUS_MODE;
1147         } else if (strcmp(buf, "mouse") == 0) {
1148                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_ONLY_MOUSE_MODE;
1149         } else if (strcmp(buf, "either") == 0) {
1150                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
1151         }
1152         return count;
1153 }
1154
1155 static DEVICE_ATTR(pointer_mode,
1156                    S_IRUGO | S_IWUGO,
1157                    show_tabletPointerMode, store_tabletPointerMode);
1158
1159 /***********************************************************************
1160  * support routines for the 'coordinate_mode' file. Note that this file
1161  * both displays current setting and allows reprogramming.
1162  */
1163 static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
1164 {
1165         struct aiptek *aiptek = dev_get_drvdata(dev);
1166         char *s;
1167
1168         if (aiptek == NULL)
1169                 return 0;
1170
1171         switch (aiptek->curSetting.coordinateMode) {
1172         case AIPTEK_COORDINATE_ABSOLUTE_MODE:
1173                 s = "absolute";
1174                 break;
1175
1176         case AIPTEK_COORDINATE_RELATIVE_MODE:
1177                 s = "relative";
1178                 break;
1179
1180         default:
1181                 s = "unknown";
1182                 break;
1183         }
1184         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1185 }
1186
1187 static ssize_t
1188 store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1189 {
1190         struct aiptek *aiptek = dev_get_drvdata(dev);
1191         if (aiptek == NULL)
1192                 return 0;
1193
1194         if (strcmp(buf, "absolute") == 0) {
1195                 aiptek->newSetting.pointerMode =
1196                     AIPTEK_COORDINATE_ABSOLUTE_MODE;
1197         } else if (strcmp(buf, "relative") == 0) {
1198                 aiptek->newSetting.pointerMode =
1199                     AIPTEK_COORDINATE_RELATIVE_MODE;
1200         }
1201         return count;
1202 }
1203
1204 static DEVICE_ATTR(coordinate_mode,
1205                    S_IRUGO | S_IWUGO,
1206                    show_tabletCoordinateMode, store_tabletCoordinateMode);
1207
1208 /***********************************************************************
1209  * support routines for the 'tool_mode' file. Note that this file
1210  * both displays current setting and allows reprogramming.
1211  */
1212 static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
1213 {
1214         struct aiptek *aiptek = dev_get_drvdata(dev);
1215         char *s;
1216
1217         if (aiptek == NULL)
1218                 return 0;
1219
1220         switch (TOOL_BUTTON(aiptek->curSetting.toolMode)) {
1221         case AIPTEK_TOOL_BUTTON_MOUSE_MODE:
1222                 s = "mouse";
1223                 break;
1224
1225         case AIPTEK_TOOL_BUTTON_ERASER_MODE:
1226                 s = "eraser";
1227                 break;
1228
1229         case AIPTEK_TOOL_BUTTON_PENCIL_MODE:
1230                 s = "pencil";
1231                 break;
1232
1233         case AIPTEK_TOOL_BUTTON_PEN_MODE:
1234                 s = "pen";
1235                 break;
1236
1237         case AIPTEK_TOOL_BUTTON_BRUSH_MODE:
1238                 s = "brush";
1239                 break;
1240
1241         case AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE:
1242                 s = "airbrush";
1243                 break;
1244
1245         case AIPTEK_TOOL_BUTTON_LENS_MODE:
1246                 s = "lens";
1247                 break;
1248
1249         default:
1250                 s = "unknown";
1251                 break;
1252         }
1253         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1254 }
1255
1256 static ssize_t
1257 store_tabletToolMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1258 {
1259         struct aiptek *aiptek = dev_get_drvdata(dev);
1260         if (aiptek == NULL)
1261                 return 0;
1262
1263         if (strcmp(buf, "mouse") == 0) {
1264                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_MOUSE_MODE;
1265         } else if (strcmp(buf, "eraser") == 0) {
1266                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_ERASER_MODE;
1267         } else if (strcmp(buf, "pencil") == 0) {
1268                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PENCIL_MODE;
1269         } else if (strcmp(buf, "pen") == 0) {
1270                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
1271         } else if (strcmp(buf, "brush") == 0) {
1272                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_BRUSH_MODE;
1273         } else if (strcmp(buf, "airbrush") == 0) {
1274                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE;
1275         } else if (strcmp(buf, "lens") == 0) {
1276                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_LENS_MODE;
1277         }
1278
1279         return count;
1280 }
1281
1282 static DEVICE_ATTR(tool_mode,
1283                    S_IRUGO | S_IWUGO,
1284                    show_tabletToolMode, store_tabletToolMode);
1285
1286 /***********************************************************************
1287  * support routines for the 'xtilt' file. Note that this file
1288  * both displays current setting and allows reprogramming.
1289  */
1290 static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *attr, char *buf)
1291 {
1292         struct aiptek *aiptek = dev_get_drvdata(dev);
1293
1294         if (aiptek == NULL)
1295                 return 0;
1296
1297         if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
1298                 return snprintf(buf, PAGE_SIZE, "disable\n");
1299         } else {
1300                 return snprintf(buf, PAGE_SIZE, "%d\n",
1301                                 aiptek->curSetting.xTilt);
1302         }
1303 }
1304
1305 static ssize_t
1306 store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1307 {
1308         struct aiptek *aiptek = dev_get_drvdata(dev);
1309         int x;
1310
1311         if (aiptek == NULL)
1312                 return 0;
1313
1314         if (strcmp(buf, "disable") == 0) {
1315                 aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
1316         } else {
1317                 x = (int)simple_strtol(buf, NULL, 10);
1318                 if (x >= AIPTEK_TILT_MIN && x <= AIPTEK_TILT_MAX) {
1319                         aiptek->newSetting.xTilt = x;
1320                 }
1321         }
1322         return count;
1323 }
1324
1325 static DEVICE_ATTR(xtilt,
1326                    S_IRUGO | S_IWUGO, show_tabletXtilt, store_tabletXtilt);
1327
1328 /***********************************************************************
1329  * support routines for the 'ytilt' file. Note that this file
1330  * both displays current setting and allows reprogramming.
1331  */
1332 static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *attr, char *buf)
1333 {
1334         struct aiptek *aiptek = dev_get_drvdata(dev);
1335
1336         if (aiptek == NULL)
1337                 return 0;
1338
1339         if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
1340                 return snprintf(buf, PAGE_SIZE, "disable\n");
1341         } else {
1342                 return snprintf(buf, PAGE_SIZE, "%d\n",
1343                                 aiptek->curSetting.yTilt);
1344         }
1345 }
1346
1347 static ssize_t
1348 store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1349 {
1350         struct aiptek *aiptek = dev_get_drvdata(dev);
1351         int y;
1352
1353         if (aiptek == NULL)
1354                 return 0;
1355
1356         if (strcmp(buf, "disable") == 0) {
1357                 aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
1358         } else {
1359                 y = (int)simple_strtol(buf, NULL, 10);
1360                 if (y >= AIPTEK_TILT_MIN && y <= AIPTEK_TILT_MAX) {
1361                         aiptek->newSetting.yTilt = y;
1362                 }
1363         }
1364         return count;
1365 }
1366
1367 static DEVICE_ATTR(ytilt,
1368                    S_IRUGO | S_IWUGO, show_tabletYtilt, store_tabletYtilt);
1369
1370 /***********************************************************************
1371  * support routines for the 'jitter' file. Note that this file
1372  * both displays current setting and allows reprogramming.
1373  */
1374 static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribute *attr, char *buf)
1375 {
1376         struct aiptek *aiptek = dev_get_drvdata(dev);
1377
1378         if (aiptek == NULL)
1379                 return 0;
1380
1381         return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
1382 }
1383
1384 static ssize_t
1385 store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1386 {
1387         struct aiptek *aiptek = dev_get_drvdata(dev);
1388
1389         if (aiptek == NULL)
1390                 return 0;
1391
1392         aiptek->newSetting.jitterDelay = (int)simple_strtol(buf, NULL, 10);
1393         return count;
1394 }
1395
1396 static DEVICE_ATTR(jitter,
1397                    S_IRUGO | S_IWUGO,
1398                    show_tabletJitterDelay, store_tabletJitterDelay);
1399
1400 /***********************************************************************
1401  * support routines for the 'delay' file. Note that this file
1402  * both displays current setting and allows reprogramming.
1403  */
1404 static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, char *buf)
1405 {
1406         struct aiptek *aiptek = dev_get_drvdata(dev);
1407
1408         if (aiptek == NULL)
1409                 return 0;
1410
1411         return snprintf(buf, PAGE_SIZE, "%d\n",
1412                         aiptek->curSetting.programmableDelay);
1413 }
1414
1415 static ssize_t
1416 store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1417 {
1418         struct aiptek *aiptek = dev_get_drvdata(dev);
1419
1420         if (aiptek == NULL)
1421                 return 0;
1422
1423         aiptek->newSetting.programmableDelay = (int)simple_strtol(buf, NULL, 10);
1424         return count;
1425 }
1426
1427 static DEVICE_ATTR(delay,
1428                    S_IRUGO | S_IWUGO,
1429                    show_tabletProgrammableDelay, store_tabletProgrammableDelay);
1430
1431 /***********************************************************************
1432  * support routines for the 'input_path' file. Note that this file
1433  * only displays current setting.
1434  */
1435 static ssize_t show_tabletInputDevice(struct device *dev, struct device_attribute *attr, char *buf)
1436 {
1437         struct aiptek *aiptek = dev_get_drvdata(dev);
1438
1439         if (aiptek == NULL)
1440                 return 0;
1441
1442         return snprintf(buf, PAGE_SIZE, "/dev/input/%s\n",
1443                         aiptek->features.inputPath);
1444 }
1445
1446 static DEVICE_ATTR(input_path, S_IRUGO, show_tabletInputDevice, NULL);
1447
1448 /***********************************************************************
1449  * support routines for the 'event_count' file. Note that this file
1450  * only displays current setting.
1451  */
1452 static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attribute *attr, char *buf)
1453 {
1454         struct aiptek *aiptek = dev_get_drvdata(dev);
1455
1456         if (aiptek == NULL)
1457                 return 0;
1458
1459         return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
1460 }
1461
1462 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
1463
1464 /***********************************************************************
1465  * support routines for the 'diagnostic' file. Note that this file
1466  * only displays current setting.
1467  */
1468 static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_attribute *attr, char *buf)
1469 {
1470         struct aiptek *aiptek = dev_get_drvdata(dev);
1471         char *retMsg;
1472
1473         if (aiptek == NULL)
1474                 return 0;
1475
1476         switch (aiptek->diagnostic) {
1477         case AIPTEK_DIAGNOSTIC_NA:
1478                 retMsg = "no errors\n";
1479                 break;
1480
1481         case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
1482                 retMsg = "Error: receiving relative reports\n";
1483                 break;
1484
1485         case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
1486                 retMsg = "Error: receiving absolute reports\n";
1487                 break;
1488
1489         case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
1490                 if (aiptek->curSetting.pointerMode ==
1491                     AIPTEK_POINTER_ONLY_MOUSE_MODE) {
1492                         retMsg = "Error: receiving stylus reports\n";
1493                 } else {
1494                         retMsg = "Error: receiving mouse reports\n";
1495                 }
1496                 break;
1497
1498         default:
1499                 return 0;
1500         }
1501         return snprintf(buf, PAGE_SIZE, retMsg);
1502 }
1503
1504 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
1505
1506 /***********************************************************************
1507  * support routines for the 'stylus_upper' file. Note that this file
1508  * both displays current setting and allows for setting changing.
1509  */
1510 static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
1511 {
1512         struct aiptek *aiptek = dev_get_drvdata(dev);
1513         char *s;
1514
1515         if (aiptek == NULL)
1516                 return 0;
1517
1518         switch (aiptek->curSetting.stylusButtonUpper) {
1519         case AIPTEK_STYLUS_UPPER_BUTTON:
1520                 s = "upper";
1521                 break;
1522
1523         case AIPTEK_STYLUS_LOWER_BUTTON:
1524                 s = "lower";
1525                 break;
1526
1527         default:
1528                 s = "unknown";
1529                 break;
1530         }
1531         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1532 }
1533
1534 static ssize_t
1535 store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1536 {
1537         struct aiptek *aiptek = dev_get_drvdata(dev);
1538
1539         if (aiptek == NULL)
1540                 return 0;
1541
1542         if (strcmp(buf, "upper") == 0) {
1543                 aiptek->newSetting.stylusButtonUpper =
1544                     AIPTEK_STYLUS_UPPER_BUTTON;
1545         } else if (strcmp(buf, "lower") == 0) {
1546                 aiptek->newSetting.stylusButtonUpper =
1547                     AIPTEK_STYLUS_LOWER_BUTTON;
1548         }
1549         return count;
1550 }
1551
1552 static DEVICE_ATTR(stylus_upper,
1553                    S_IRUGO | S_IWUGO,
1554                    show_tabletStylusUpper, store_tabletStylusUpper);
1555
1556 /***********************************************************************
1557  * support routines for the 'stylus_lower' file. Note that this file
1558  * both displays current setting and allows for setting changing.
1559  */
1560 static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribute *attr, char *buf)
1561 {
1562         struct aiptek *aiptek = dev_get_drvdata(dev);
1563         char *s;
1564
1565         if (aiptek == NULL)
1566                 return 0;
1567
1568         switch (aiptek->curSetting.stylusButtonLower) {
1569         case AIPTEK_STYLUS_UPPER_BUTTON:
1570                 s = "upper";
1571                 break;
1572
1573         case AIPTEK_STYLUS_LOWER_BUTTON:
1574                 s = "lower";
1575                 break;
1576
1577         default:
1578                 s = "unknown";
1579                 break;
1580         }
1581         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1582 }
1583
1584 static ssize_t
1585 store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1586 {
1587         struct aiptek *aiptek = dev_get_drvdata(dev);
1588
1589         if (aiptek == NULL)
1590                 return 0;
1591
1592         if (strcmp(buf, "upper") == 0) {
1593                 aiptek->newSetting.stylusButtonLower =
1594                     AIPTEK_STYLUS_UPPER_BUTTON;
1595         } else if (strcmp(buf, "lower") == 0) {
1596                 aiptek->newSetting.stylusButtonLower =
1597                     AIPTEK_STYLUS_LOWER_BUTTON;
1598         }
1599         return count;
1600 }
1601
1602 static DEVICE_ATTR(stylus_lower,
1603                    S_IRUGO | S_IWUGO,
1604                    show_tabletStylusLower, store_tabletStylusLower);
1605
1606 /***********************************************************************
1607  * support routines for the 'mouse_left' file. Note that this file
1608  * both displays current setting and allows for setting changing.
1609  */
1610 static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
1611 {
1612         struct aiptek *aiptek = dev_get_drvdata(dev);
1613         char *s;
1614
1615         if (aiptek == NULL)
1616                 return 0;
1617
1618         switch (aiptek->curSetting.mouseButtonLeft) {
1619         case AIPTEK_MOUSE_LEFT_BUTTON:
1620                 s = "left";
1621                 break;
1622
1623         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1624                 s = "middle";
1625                 break;
1626
1627         case AIPTEK_MOUSE_RIGHT_BUTTON:
1628                 s = "right";
1629                 break;
1630
1631         default:
1632                 s = "unknown";
1633                 break;
1634         }
1635         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1636 }
1637
1638 static ssize_t
1639 store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1640 {
1641         struct aiptek *aiptek = dev_get_drvdata(dev);
1642
1643         if (aiptek == NULL)
1644                 return 0;
1645
1646         if (strcmp(buf, "left") == 0) {
1647                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
1648         } else if (strcmp(buf, "middle") == 0) {
1649                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_MIDDLE_BUTTON;
1650         } else if (strcmp(buf, "right") == 0) {
1651                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_RIGHT_BUTTON;
1652         }
1653         return count;
1654 }
1655
1656 static DEVICE_ATTR(mouse_left,
1657                    S_IRUGO | S_IWUGO,
1658                    show_tabletMouseLeft, store_tabletMouseLeft);
1659
1660 /***********************************************************************
1661  * support routines for the 'mouse_middle' file. Note that this file
1662  * both displays current setting and allows for setting changing.
1663  */
1664 static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, char *buf)
1665 {
1666         struct aiptek *aiptek = dev_get_drvdata(dev);
1667         char *s;
1668
1669         if (aiptek == NULL)
1670                 return 0;
1671
1672         switch (aiptek->curSetting.mouseButtonMiddle) {
1673         case AIPTEK_MOUSE_LEFT_BUTTON:
1674                 s = "left";
1675                 break;
1676
1677         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1678                 s = "middle";
1679                 break;
1680
1681         case AIPTEK_MOUSE_RIGHT_BUTTON:
1682                 s = "right";
1683                 break;
1684
1685         default:
1686                 s = "unknown";
1687                 break;
1688         }
1689         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1690 }
1691
1692 static ssize_t
1693 store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1694 {
1695         struct aiptek *aiptek = dev_get_drvdata(dev);
1696
1697         if (aiptek == NULL)
1698                 return 0;
1699
1700         if (strcmp(buf, "left") == 0) {
1701                 aiptek->newSetting.mouseButtonMiddle = AIPTEK_MOUSE_LEFT_BUTTON;
1702         } else if (strcmp(buf, "middle") == 0) {
1703                 aiptek->newSetting.mouseButtonMiddle =
1704                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1705         } else if (strcmp(buf, "right") == 0) {
1706                 aiptek->newSetting.mouseButtonMiddle =
1707                     AIPTEK_MOUSE_RIGHT_BUTTON;
1708         }
1709         return count;
1710 }
1711
1712 static DEVICE_ATTR(mouse_middle,
1713                    S_IRUGO | S_IWUGO,
1714                    show_tabletMouseMiddle, store_tabletMouseMiddle);
1715
1716 /***********************************************************************
1717  * support routines for the 'mouse_right' file. Note that this file
1718  * both displays current setting and allows for setting changing.
1719  */
1720 static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute *attr, char *buf)
1721 {
1722         struct aiptek *aiptek = dev_get_drvdata(dev);
1723         char *s;
1724
1725         if (aiptek == NULL)
1726                 return 0;
1727
1728         switch (aiptek->curSetting.mouseButtonRight) {
1729         case AIPTEK_MOUSE_LEFT_BUTTON:
1730                 s = "left";
1731                 break;
1732
1733         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1734                 s = "middle";
1735                 break;
1736
1737         case AIPTEK_MOUSE_RIGHT_BUTTON:
1738                 s = "right";
1739                 break;
1740
1741         default:
1742                 s = "unknown";
1743                 break;
1744         }
1745         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1746 }
1747
1748 static ssize_t
1749 store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1750 {
1751         struct aiptek *aiptek = dev_get_drvdata(dev);
1752
1753         if (aiptek == NULL)
1754                 return 0;
1755
1756         if (strcmp(buf, "left") == 0) {
1757                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_LEFT_BUTTON;
1758         } else if (strcmp(buf, "middle") == 0) {
1759                 aiptek->newSetting.mouseButtonRight =
1760                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1761         } else if (strcmp(buf, "right") == 0) {
1762                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
1763         }
1764         return count;
1765 }
1766
1767 static DEVICE_ATTR(mouse_right,
1768                    S_IRUGO | S_IWUGO,
1769                    show_tabletMouseRight, store_tabletMouseRight);
1770
1771 /***********************************************************************
1772  * support routines for the 'wheel' file. Note that this file
1773  * both displays current setting and allows for setting changing.
1774  */
1775 static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *attr, char *buf)
1776 {
1777         struct aiptek *aiptek = dev_get_drvdata(dev);
1778
1779         if (aiptek == NULL)
1780                 return 0;
1781
1782         if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
1783                 return snprintf(buf, PAGE_SIZE, "disable\n");
1784         } else {
1785                 return snprintf(buf, PAGE_SIZE, "%d\n",
1786                                 aiptek->curSetting.wheel);
1787         }
1788 }
1789
1790 static ssize_t
1791 store_tabletWheel(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1792 {
1793         struct aiptek *aiptek = dev_get_drvdata(dev);
1794
1795         if (aiptek == NULL)
1796                 return 0;
1797
1798         aiptek->newSetting.wheel = (int)simple_strtol(buf, NULL, 10);
1799         return count;
1800 }
1801
1802 static DEVICE_ATTR(wheel,
1803                    S_IRUGO | S_IWUGO, show_tabletWheel, store_tabletWheel);
1804
1805 /***********************************************************************
1806  * support routines for the 'execute' file. Note that this file
1807  * both displays current setting and allows for setting changing.
1808  */
1809 static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *attr, char *buf)
1810 {
1811         struct aiptek *aiptek = dev_get_drvdata(dev);
1812
1813         if (aiptek == NULL)
1814                 return 0;
1815
1816         /* There is nothing useful to display, so a one-line manual
1817          * is in order...
1818          */
1819         return snprintf(buf, PAGE_SIZE,
1820                         "Write anything to this file to program your tablet.\n");
1821 }
1822
1823 static ssize_t
1824 store_tabletExecute(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1825 {
1826         struct aiptek *aiptek = dev_get_drvdata(dev);
1827
1828         if (aiptek == NULL)
1829                 return 0;
1830
1831         /* We do not care what you write to this file. Merely the action
1832          * of writing to this file triggers a tablet reprogramming.
1833          */
1834         memcpy(&aiptek->curSetting, &aiptek->newSetting,
1835                sizeof(struct aiptek_settings));
1836
1837         if (aiptek_program_tablet(aiptek) < 0)
1838                 return -EIO;
1839
1840         return count;
1841 }
1842
1843 static DEVICE_ATTR(execute,
1844                    S_IRUGO | S_IWUGO, show_tabletExecute, store_tabletExecute);
1845
1846 /***********************************************************************
1847  * support routines for the 'odm_code' file. Note that this file
1848  * only displays current setting.
1849  */
1850 static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *attr, char *buf)
1851 {
1852         struct aiptek *aiptek = dev_get_drvdata(dev);
1853
1854         if (aiptek == NULL)
1855                 return 0;
1856
1857         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
1858 }
1859
1860 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
1861
1862 /***********************************************************************
1863  * support routines for the 'model_code' file. Note that this file
1864  * only displays current setting.
1865  */
1866 static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute *attr, char *buf)
1867 {
1868         struct aiptek *aiptek = dev_get_drvdata(dev);
1869
1870         if (aiptek == NULL)
1871                 return 0;
1872
1873         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
1874 }
1875
1876 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
1877
1878 /***********************************************************************
1879  * support routines for the 'firmware_code' file. Note that this file
1880  * only displays current setting.
1881  */
1882 static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *attr, char *buf)
1883 {
1884         struct aiptek *aiptek = dev_get_drvdata(dev);
1885
1886         if (aiptek == NULL)
1887                 return 0;
1888
1889         return snprintf(buf, PAGE_SIZE, "%04x\n",
1890                         aiptek->features.firmwareCode);
1891 }
1892
1893 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
1894
1895 /***********************************************************************
1896  * This routine removes all existing sysfs files managed by this device
1897  * driver.
1898  */
1899 static void aiptek_delete_files(struct device *dev)
1900 {
1901         device_remove_file(dev, &dev_attr_size);
1902         device_remove_file(dev, &dev_attr_product_id);
1903         device_remove_file(dev, &dev_attr_vendor_id);
1904         device_remove_file(dev, &dev_attr_vendor);
1905         device_remove_file(dev, &dev_attr_product);
1906         device_remove_file(dev, &dev_attr_pointer_mode);
1907         device_remove_file(dev, &dev_attr_coordinate_mode);
1908         device_remove_file(dev, &dev_attr_tool_mode);
1909         device_remove_file(dev, &dev_attr_xtilt);
1910         device_remove_file(dev, &dev_attr_ytilt);
1911         device_remove_file(dev, &dev_attr_jitter);
1912         device_remove_file(dev, &dev_attr_delay);
1913         device_remove_file(dev, &dev_attr_input_path);
1914         device_remove_file(dev, &dev_attr_event_count);
1915         device_remove_file(dev, &dev_attr_diagnostic);
1916         device_remove_file(dev, &dev_attr_odm_code);
1917         device_remove_file(dev, &dev_attr_model_code);
1918         device_remove_file(dev, &dev_attr_firmware_code);
1919         device_remove_file(dev, &dev_attr_stylus_lower);
1920         device_remove_file(dev, &dev_attr_stylus_upper);
1921         device_remove_file(dev, &dev_attr_mouse_left);
1922         device_remove_file(dev, &dev_attr_mouse_middle);
1923         device_remove_file(dev, &dev_attr_mouse_right);
1924         device_remove_file(dev, &dev_attr_wheel);
1925         device_remove_file(dev, &dev_attr_execute);
1926 }
1927
1928 /***********************************************************************
1929  * This routine creates the sysfs files managed by this device
1930  * driver.
1931  */
1932 static int aiptek_add_files(struct device *dev)
1933 {
1934         int ret;
1935
1936         if ((ret = device_create_file(dev, &dev_attr_size)) ||
1937             (ret = device_create_file(dev, &dev_attr_product_id)) ||
1938             (ret = device_create_file(dev, &dev_attr_vendor_id)) ||
1939             (ret = device_create_file(dev, &dev_attr_vendor)) ||
1940             (ret = device_create_file(dev, &dev_attr_product)) ||
1941             (ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
1942             (ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
1943             (ret = device_create_file(dev, &dev_attr_tool_mode)) ||
1944             (ret = device_create_file(dev, &dev_attr_xtilt)) ||
1945             (ret = device_create_file(dev, &dev_attr_ytilt)) ||
1946             (ret = device_create_file(dev, &dev_attr_jitter)) ||
1947             (ret = device_create_file(dev, &dev_attr_delay)) ||
1948             (ret = device_create_file(dev, &dev_attr_input_path)) ||
1949             (ret = device_create_file(dev, &dev_attr_event_count)) ||
1950             (ret = device_create_file(dev, &dev_attr_diagnostic)) ||
1951             (ret = device_create_file(dev, &dev_attr_odm_code)) ||
1952             (ret = device_create_file(dev, &dev_attr_model_code)) ||
1953             (ret = device_create_file(dev, &dev_attr_firmware_code)) ||
1954             (ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
1955             (ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
1956             (ret = device_create_file(dev, &dev_attr_mouse_left)) ||
1957             (ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
1958             (ret = device_create_file(dev, &dev_attr_mouse_right)) ||
1959             (ret = device_create_file(dev, &dev_attr_wheel)) ||
1960             (ret = device_create_file(dev, &dev_attr_execute))) {
1961                 err("aiptek: killing own sysfs device files\n");
1962                 aiptek_delete_files(dev);
1963         }
1964         return ret;
1965 }
1966
1967 /***********************************************************************
1968  * This routine is called when a tablet has been identified. It basically
1969  * sets up the tablet and the driver's internal structures.
1970  */
1971 static int
1972 aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
1973 {
1974         struct usb_device *usbdev = interface_to_usbdev(intf);
1975         struct usb_endpoint_descriptor *endpoint;
1976         struct aiptek *aiptek;
1977         struct input_dev *inputdev;
1978         struct input_handle *inputhandle;
1979         struct list_head *node, *next;
1980         char path[64 + 1];
1981         int i;
1982         int speeds[] = { 0,
1983                 AIPTEK_PROGRAMMABLE_DELAY_50,
1984                 AIPTEK_PROGRAMMABLE_DELAY_400,
1985                 AIPTEK_PROGRAMMABLE_DELAY_25,
1986                 AIPTEK_PROGRAMMABLE_DELAY_100,
1987                 AIPTEK_PROGRAMMABLE_DELAY_200,
1988                 AIPTEK_PROGRAMMABLE_DELAY_300
1989         };
1990
1991         /* programmableDelay is where the command-line specified
1992          * delay is kept. We make it the first element of speeds[],
1993          * so therefore, your override speed is tried first, then the
1994          * remainder. Note that the default value of 400ms will be tried
1995          * if you do not specify any command line parameter.
1996          */
1997         speeds[0] = programmableDelay;
1998
1999         if ((aiptek = kmalloc(sizeof(struct aiptek), GFP_KERNEL)) == NULL)
2000                 return -ENOMEM;
2001         memset(aiptek, 0, sizeof(struct aiptek));
2002
2003         aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
2004                                         SLAB_ATOMIC, &aiptek->data_dma);
2005         if (aiptek->data == NULL) {
2006                 kfree(aiptek);
2007                 return -ENOMEM;
2008         }
2009
2010         aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
2011         if (aiptek->urb == NULL) {
2012                 usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
2013                                 aiptek->data_dma);
2014                 kfree(aiptek);
2015                 return -ENOMEM;
2016         }
2017
2018         /* Set up the curSettings struct. Said struct contains the current
2019          * programmable parameters. The newSetting struct contains changes
2020          * the user makes to the settings via the sysfs interface. Those
2021          * changes are not "committed" to curSettings until the user
2022          * writes to the sysfs/.../execute file.
2023          */
2024         aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
2025         aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
2026         aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
2027         aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
2028         aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
2029         aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
2030         aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
2031         aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
2032         aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
2033         aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
2034         aiptek->curSetting.jitterDelay = jitterDelay;
2035         aiptek->curSetting.programmableDelay = programmableDelay;
2036
2037         /* Both structs should have equivalent settings
2038          */
2039         memcpy(&aiptek->newSetting, &aiptek->curSetting,
2040                sizeof(struct aiptek_settings));
2041
2042         /* Now program the capacities of the tablet, in terms of being
2043          * an input device.
2044          */
2045         aiptek->inputdev.evbit[0] |= BIT(EV_KEY)
2046             | BIT(EV_ABS)
2047             | BIT(EV_REL)
2048             | BIT(EV_MSC);
2049
2050         aiptek->inputdev.absbit[0] |=
2051             (BIT(ABS_X) |
2052              BIT(ABS_Y) |
2053              BIT(ABS_PRESSURE) |
2054              BIT(ABS_TILT_X) |
2055              BIT(ABS_TILT_Y) | BIT(ABS_WHEEL) | BIT(ABS_MISC));
2056
2057         aiptek->inputdev.relbit[0] |=
2058             (BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL) | BIT(REL_MISC));
2059
2060         aiptek->inputdev.keybit[LONG(BTN_LEFT)] |=
2061             (BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE));
2062
2063         aiptek->inputdev.keybit[LONG(BTN_DIGI)] |=
2064             (BIT(BTN_TOOL_PEN) |
2065              BIT(BTN_TOOL_RUBBER) |
2066              BIT(BTN_TOOL_PENCIL) |
2067              BIT(BTN_TOOL_AIRBRUSH) |
2068              BIT(BTN_TOOL_BRUSH) |
2069              BIT(BTN_TOOL_MOUSE) |
2070              BIT(BTN_TOOL_LENS) |
2071              BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2));
2072
2073         aiptek->inputdev.mscbit[0] = BIT(MSC_SERIAL);
2074
2075         /* Programming the tablet macro keys needs to be done with a for loop
2076          * as the keycodes are discontiguous.
2077          */
2078         for (i = 0; i < sizeof(macroKeyEvents) / sizeof(macroKeyEvents[0]); ++i)
2079                 set_bit(macroKeyEvents[i], aiptek->inputdev.keybit);
2080
2081         /* Set up client data, pointers to open and close routines
2082          * for the input device.
2083          */
2084         aiptek->inputdev.private = aiptek;
2085         aiptek->inputdev.open = aiptek_open;
2086         aiptek->inputdev.close = aiptek_close;
2087
2088         /* Determine the usb devices' physical path.
2089          * Asketh not why we always pretend we're using "../input0",
2090          * but I suspect this will have to be refactored one
2091          * day if a single USB device can be a keyboard & a mouse
2092          * & a tablet, and the inputX number actually will tell
2093          * us something...
2094          */
2095         if (usb_make_path(usbdev, path, 64) > 0)
2096                 sprintf(aiptek->features.usbPath, "%s/input0", path);
2097
2098         /* Program the input device coordinate capacities. We do not yet
2099          * know what maximum X, Y, and Z values are, so we're putting fake
2100          * values in. Later, we'll ask the tablet to put in the correct
2101          * values.
2102          */
2103         aiptek->inputdev.absmin[ABS_X] = 0;
2104         aiptek->inputdev.absmax[ABS_X] = 2999;
2105         aiptek->inputdev.absmin[ABS_Y] = 0;
2106         aiptek->inputdev.absmax[ABS_Y] = 2249;
2107         aiptek->inputdev.absmin[ABS_PRESSURE] = 0;
2108         aiptek->inputdev.absmax[ABS_PRESSURE] = 511;
2109         aiptek->inputdev.absmin[ABS_TILT_X] = AIPTEK_TILT_MIN;
2110         aiptek->inputdev.absmax[ABS_TILT_X] = AIPTEK_TILT_MAX;
2111         aiptek->inputdev.absmin[ABS_TILT_Y] = AIPTEK_TILT_MIN;
2112         aiptek->inputdev.absmax[ABS_TILT_Y] = AIPTEK_TILT_MAX;
2113         aiptek->inputdev.absmin[ABS_WHEEL] = AIPTEK_WHEEL_MIN;
2114         aiptek->inputdev.absmax[ABS_WHEEL] = AIPTEK_WHEEL_MAX - 1;
2115         aiptek->inputdev.absfuzz[ABS_X] = 0;
2116         aiptek->inputdev.absfuzz[ABS_Y] = 0;
2117         aiptek->inputdev.absfuzz[ABS_PRESSURE] = 0;
2118         aiptek->inputdev.absfuzz[ABS_TILT_X] = 0;
2119         aiptek->inputdev.absfuzz[ABS_TILT_Y] = 0;
2120         aiptek->inputdev.absfuzz[ABS_WHEEL] = 0;
2121         aiptek->inputdev.absflat[ABS_X] = 0;
2122         aiptek->inputdev.absflat[ABS_Y] = 0;
2123         aiptek->inputdev.absflat[ABS_PRESSURE] = 0;
2124         aiptek->inputdev.absflat[ABS_TILT_X] = 0;
2125         aiptek->inputdev.absflat[ABS_TILT_Y] = 0;
2126         aiptek->inputdev.absflat[ABS_WHEEL] = 0;
2127         aiptek->inputdev.name = "Aiptek";
2128         aiptek->inputdev.phys = aiptek->features.usbPath;
2129         usb_to_input_id(usbdev, &aiptek->inputdev.id);
2130         aiptek->inputdev.dev = &intf->dev;
2131
2132         aiptek->usbdev = usbdev;
2133         aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
2134         aiptek->inDelay = 0;
2135         aiptek->endDelay = 0;
2136         aiptek->previousJitterable = 0;
2137
2138         endpoint = &intf->altsetting[0].endpoint[0].desc;
2139
2140         /* Go set up our URB, which is called when the tablet receives
2141          * input.
2142          */
2143         usb_fill_int_urb(aiptek->urb,
2144                          aiptek->usbdev,
2145                          usb_rcvintpipe(aiptek->usbdev,
2146                                         endpoint->bEndpointAddress),
2147                          aiptek->data, 8, aiptek_irq, aiptek,
2148                          endpoint->bInterval);
2149
2150         aiptek->urb->transfer_dma = aiptek->data_dma;
2151         aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2152
2153         /* Register the tablet as an Input Device
2154          */
2155         input_register_device(&aiptek->inputdev);
2156
2157         /* We now will look for the evdev device which is mapped to
2158          * the tablet. The partial name is kept in the link list of
2159          * input_handles associated with this input device.
2160          * What identifies an evdev input_handler is that it begins
2161          * with 'event', continues with a digit, and that in turn
2162          * is mapped to /{devfs}/input/eventN.
2163          */
2164         inputdev = &aiptek->inputdev;
2165         list_for_each_safe(node, next, &inputdev->h_list) {
2166                 inputhandle = to_handle(node);
2167                 if (strncmp(inputhandle->name, "event", 5) == 0) {
2168                         strcpy(aiptek->features.inputPath, inputhandle->name);
2169                         break;
2170                 }
2171         }
2172
2173         info("input: Aiptek on %s (%s)\n", path, aiptek->features.inputPath);
2174
2175         /* Program the tablet. This sets the tablet up in the mode
2176          * specified in newSetting, and also queries the tablet's
2177          * physical capacities.
2178          *
2179          * Sanity check: if a tablet doesn't like the slow programmatic
2180          * delay, we often get sizes of 0x0. Let's use that as an indicator
2181          * to try faster delays, up to 25 ms. If that logic fails, well, you'll
2182          * have to explain to us how your tablet thinks it's 0x0, and yet that's
2183          * not an error :-)
2184          */
2185
2186         for (i = 0; i < sizeof(speeds) / sizeof(speeds[0]); ++i) {
2187                 aiptek->curSetting.programmableDelay = speeds[i];
2188                 (void)aiptek_program_tablet(aiptek);
2189                 if (aiptek->inputdev.absmax[ABS_X] > 0) {
2190                         info("input: Aiptek using %d ms programming speed\n",
2191                              aiptek->curSetting.programmableDelay);
2192                         break;
2193                 }
2194         }
2195
2196         /* Associate this driver's struct with the usb interface.
2197          */
2198         usb_set_intfdata(intf, aiptek);
2199
2200         /* Set up the sysfs files
2201          */
2202         aiptek_add_files(&intf->dev);
2203
2204         /* Make sure the evdev module is loaded. Assuming evdev IS a module :-)
2205          */
2206         if (request_module("evdev") != 0)
2207                 info("aiptek: error loading 'evdev' module");
2208
2209         return 0;
2210 }
2211
2212 /* Forward declaration */
2213 static void aiptek_disconnect(struct usb_interface *intf);
2214
2215 static struct usb_driver aiptek_driver = {
2216         .owner = THIS_MODULE,
2217         .name = "aiptek",
2218         .probe = aiptek_probe,
2219         .disconnect = aiptek_disconnect,
2220         .id_table = aiptek_ids,
2221 };
2222
2223 /***********************************************************************
2224  * Deal with tablet disconnecting from the system.
2225  */
2226 static void aiptek_disconnect(struct usb_interface *intf)
2227 {
2228         struct aiptek *aiptek = usb_get_intfdata(intf);
2229
2230         /* Disassociate driver's struct with usb interface
2231          */
2232         usb_set_intfdata(intf, NULL);
2233         if (aiptek != NULL) {
2234                 /* Free & unhook everything from the system.
2235                  */
2236                 usb_kill_urb(aiptek->urb);
2237                 input_unregister_device(&aiptek->inputdev);
2238                 aiptek_delete_files(&intf->dev);
2239                 usb_free_urb(aiptek->urb);
2240                 usb_buffer_free(interface_to_usbdev(intf),
2241                                 AIPTEK_PACKET_LENGTH,
2242                                 aiptek->data, aiptek->data_dma);
2243                 kfree(aiptek);
2244         }
2245 }
2246
2247 static int __init aiptek_init(void)
2248 {
2249         int result = usb_register(&aiptek_driver);
2250         if (result == 0) {
2251                 info(DRIVER_VERSION ": " DRIVER_AUTHOR);
2252                 info(DRIVER_DESC);
2253         }
2254         return result;
2255 }
2256
2257 static void __exit aiptek_exit(void)
2258 {
2259         usb_deregister(&aiptek_driver);
2260 }
2261
2262 MODULE_AUTHOR(DRIVER_AUTHOR);
2263 MODULE_DESCRIPTION(DRIVER_DESC);
2264 MODULE_LICENSE("GPL");
2265
2266 module_param(programmableDelay, int, 0);
2267 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
2268 module_param(jitterDelay, int, 0);
2269 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
2270
2271 module_init(aiptek_init);
2272 module_exit(aiptek_exit);