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/sched.h>
  81 #include <asm/uaccess.h>
  82 #include <asm/unaligned.h>
  83
  84 /*
  85  * Version Information
  86  */
  87 #define DRIVER_VERSION "v1.5 (May-15-2004)"
  88 #define DRIVER_AUTHOR  "Bryan W. Headley/Chris Atenasio"
  89 #define DRIVER_DESC    "Aiptek HyperPen USB Tablet Driver (Linux 2.6.x)"
  90
  91 /*
  92  * Aiptek status packet:
  93  *
  94  * (returned as Report 1 - relative coordinates from mouse and stylus)
  95  *
  96  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
  97  * byte0   0     0     0     0     0     0     0     1
  98  * byte1   0     0     0     0     0    BS2   BS    Tip
  99  * byte2  X7    X6    X5    X4    X3    X2    X1    X0
 100  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 101  *
 102  * (returned as Report 2 - absolute coordinates from the stylus)
 103  *
 104  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 105  * byte0   0     0     0     0     0     0     1     0
 106  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 107  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 108  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 109  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 110  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 111  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 112  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 113  *
 114  * (returned as Report 3 - absolute coordinates from the mouse)
 115  *
 116  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 117  * byte0   0     0     0     0     0     0     1     0
 118  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 119  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 120  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 121  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 122  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 123  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 124  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 125  *
 126  * (returned as Report 4 - macrokeys from the stylus)
 127  *
 128  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 129  * byte0   0     0     0     0     0     1     0     0
 130  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 131  * byte2   0     0     0     0     0     0     1     0
 132  * byte3   0     0     0    K4    K3    K2    K1    K0
 133  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 134  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 135  *
 136  * (returned as Report 5 - macrokeys from the mouse)
 137  *
 138  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 139  * byte0   0     0     0     0     0     1     0     0
 140  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 141  * byte2   0     0     0     0     0     0     1     0
 142  * byte3   0     0     0    K4    K3    K2    K1    K0
 143  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 144  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 145  *
 146  * IR: In Range = Proximity on
 147  * DV = Data Valid
 148  * BS = Barrel Switch (as in, macro keys)
 149  * BS2 also referred to as Tablet Pick
 150  *
 151  * Command Summary:
 152  *
 153  * Use report_type CONTROL (3)
 154  * Use report_id   2
 155  *
 156  * Command/Data    Description     Return Bytes    Return Value
 157  * 0x10/0x00       SwitchToMouse       0
 158  * 0x10/0x01       SwitchToTablet      0
 159  * 0x18/0x04       SetResolution       0
 160  * 0x12/0xFF       AutoGainOn          0
 161  * 0x17/0x00       FilterOn            0
 162  * 0x01/0x00       GetXExtension       2           MaxX
 163  * 0x01/0x01       GetYExtension       2           MaxY
 164  * 0x02/0x00       GetModelCode        2           ModelCode = LOBYTE
 165  * 0x03/0x00       GetODMCode          2           ODMCode
 166  * 0x08/0x00       GetPressureLevels   2           =512
 167  * 0x04/0x00       GetFirmwareVersion  2           Firmware Version
 168  * 0x11/0x02       EnableMacroKeys     0
 169  *
 170  * To initialize the tablet:
 171  *
 172  * (1) Send Resolution500LPI (Command)
 173  * (2) Query for Model code (Option Report)
 174  * (3) Query for ODM code (Option Report)
 175  * (4) Query for firmware (Option Report)
 176  * (5) Query for GetXExtension (Option Report)
 177  * (6) Query for GetYExtension (Option Report)
 178  * (7) Query for GetPressureLevels (Option Report)
 179  * (8) SwitchToTablet for Absolute coordinates, or
 180  *     SwitchToMouse for Relative coordinates (Command)
 181  * (9) EnableMacroKeys (Command)
 182  * (10) FilterOn (Command)
 183  * (11) AutoGainOn (Command)
 184  *
 185  * (Step 9 can be omitted, but you'll then have no function keys.)
 186  */
 187
 188 #define USB_VENDOR_ID_AIPTEK                            0x08ca
 189 #define USB_REQ_GET_REPORT                              0x01
 190 #define USB_REQ_SET_REPORT                              0x09
 191
 192         /* PointerMode codes
 193          */
 194 #define AIPTEK_POINTER_ONLY_MOUSE_MODE                  0
 195 #define AIPTEK_POINTER_ONLY_STYLUS_MODE                 1
 196 #define AIPTEK_POINTER_EITHER_MODE                      2
 197
 198 #define AIPTEK_POINTER_ALLOW_MOUSE_MODE(a)              \
 199         (a == AIPTEK_POINTER_ONLY_MOUSE_MODE ||         \
 200          a == AIPTEK_POINTER_EITHER_MODE)
 201 #define AIPTEK_POINTER_ALLOW_STYLUS_MODE(a)             \
 202         (a == AIPTEK_POINTER_ONLY_STYLUS_MODE ||        \
 203          a == AIPTEK_POINTER_EITHER_MODE)
 204
 205         /* CoordinateMode code
 206          */
 207 #define AIPTEK_COORDINATE_RELATIVE_MODE                 0
 208 #define AIPTEK_COORDINATE_ABSOLUTE_MODE                 1
 209
 210        /* XTilt and YTilt values
 211         */
 212 #define AIPTEK_TILT_MIN                                 (-128)
 213 #define AIPTEK_TILT_MAX                                 127
 214 #define AIPTEK_TILT_DISABLE                             (-10101)
 215
 216         /* Wheel values
 217          */
 218 #define AIPTEK_WHEEL_MIN                                0
 219 #define AIPTEK_WHEEL_MAX                                1024
 220 #define AIPTEK_WHEEL_DISABLE                            (-10101)
 221
 222         /* ToolCode values, which BTW are 0x140 .. 0x14f
 223          * We have things set up such that if TOOL_BUTTON_FIRED_BIT is
 224          * not set, we'll send one instance of AIPTEK_TOOL_BUTTON_xxx.
 225          *
 226          * Whenever the user resets the value, TOOL_BUTTON_FIRED_BIT will
 227          * get reset.
 228          */
 229 #define TOOL_BUTTON(x)                                  ((x) & 0x14f)
 230 #define TOOL_BUTTON_FIRED(x)                            ((x) & 0x200)
 231 #define TOOL_BUTTON_FIRED_BIT                           0x200
 232         /* toolMode codes
 233          */
 234 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 235 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 236 #define AIPTEK_TOOL_BUTTON_PENCIL_MODE                  BTN_TOOL_PENCIL
 237 #define AIPTEK_TOOL_BUTTON_BRUSH_MODE                   BTN_TOOL_BRUSH
 238 #define AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE                BTN_TOOL_AIRBRUSH
 239 #define AIPTEK_TOOL_BUTTON_ERASER_MODE                  BTN_TOOL_RUBBER
 240 #define AIPTEK_TOOL_BUTTON_MOUSE_MODE                   BTN_TOOL_MOUSE
 241 #define AIPTEK_TOOL_BUTTON_LENS_MODE                    BTN_TOOL_LENS
 242
 243         /* Diagnostic message codes
 244          */
 245 #define AIPTEK_DIAGNOSTIC_NA                            0
 246 #define AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE  1
 247 #define AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE  2
 248 #define AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED               3
 249
 250         /* Time to wait (in ms) to help mask hand jittering
 251          * when pressing the stylus buttons.
 252          */
 253 #define AIPTEK_JITTER_DELAY_DEFAULT                     50
 254
 255         /* Time to wait (in ms) in-between sending the tablet
 256          * a command and beginning the process of reading the return
 257          * sequence from the tablet.
 258          */
 259 #define AIPTEK_PROGRAMMABLE_DELAY_25            25
 260 #define AIPTEK_PROGRAMMABLE_DELAY_50            50
 261 #define AIPTEK_PROGRAMMABLE_DELAY_100           100
 262 #define AIPTEK_PROGRAMMABLE_DELAY_200           200
 263 #define AIPTEK_PROGRAMMABLE_DELAY_300           300
 264 #define AIPTEK_PROGRAMMABLE_DELAY_400           400
 265 #define AIPTEK_PROGRAMMABLE_DELAY_DEFAULT       AIPTEK_PROGRAMMABLE_DELAY_400
 266
 267         /* Mouse button programming
 268          */
 269 #define AIPTEK_MOUSE_LEFT_BUTTON                0x01
 270 #define AIPTEK_MOUSE_RIGHT_BUTTON               0x02
 271 #define AIPTEK_MOUSE_MIDDLE_BUTTON              0x04
 272
 273         /* Stylus button programming
 274          */
 275 #define AIPTEK_STYLUS_LOWER_BUTTON              0x08
 276 #define AIPTEK_STYLUS_UPPER_BUTTON              0x10
 277
 278         /* Length of incoming packet from the tablet
 279          */
 280 #define AIPTEK_PACKET_LENGTH                    8
 281
 282         /* We report in EV_MISC both the proximity and
 283          * whether the report came from the stylus, tablet mouse
 284          * or "unknown" -- Unknown when the tablet is in relative
 285          * mode, because we only get report 1's.
 286          */
 287 #define AIPTEK_REPORT_TOOL_UNKNOWN              0x10
 288 #define AIPTEK_REPORT_TOOL_STYLUS               0x20
 289 #define AIPTEK_REPORT_TOOL_MOUSE                0x40
 290
 291 static int programmableDelay = AIPTEK_PROGRAMMABLE_DELAY_DEFAULT;
 292 static int jitterDelay = AIPTEK_JITTER_DELAY_DEFAULT;
 293
 294 struct aiptek_features {
 295         int odmCode;            /* Tablet manufacturer code       */
 296         int modelCode;          /* Tablet model code (not unique) */
 297         int firmwareCode;       /* prom/eeprom version            */
 298         char usbPath[64 + 1];   /* device's physical usb path     */
 299         char inputPath[64 + 1]; /* input device path              */
 300 };
 301
 302 struct aiptek_settings {
 303         int pointerMode;        /* stylus-, mouse-only or either */
 304         int coordinateMode;     /* absolute/relative coords      */
 305         int toolMode;           /* pen, pencil, brush, etc. tool */
 306         int xTilt;              /* synthetic xTilt amount        */
 307         int yTilt;              /* synthetic yTilt amount        */
 308         int wheel;              /* synthetic wheel amount        */
 309         int stylusButtonUpper;  /* stylus upper btn delivers...  */
 310         int stylusButtonLower;  /* stylus lower btn delivers...  */
 311         int mouseButtonLeft;    /* mouse left btn delivers...    */
 312         int mouseButtonMiddle;  /* mouse middle btn delivers...  */
 313         int mouseButtonRight;   /* mouse right btn delivers...   */
 314         int programmableDelay;  /* delay for tablet programming  */
 315         int jitterDelay;        /* delay for hand jittering      */
 316 };
 317
 318 struct aiptek {
 319         struct input_dev inputdev;              /* input device struct           */
 320         struct usb_device *usbdev;              /* usb device struct             */
 321         struct urb *urb;                        /* urb for incoming reports      */
 322         dma_addr_t data_dma;                    /* our dma stuffage              */
 323         struct aiptek_features features;        /* tablet's array of features    */
 324         struct aiptek_settings curSetting;      /* tablet's current programmable */
 325         struct aiptek_settings newSetting;      /* ... and new param settings    */
 326         unsigned int ifnum;                     /* interface number for IO       */
 327         int diagnostic;                         /* tablet diagnostic codes       */
 328         unsigned long eventCount;               /* event count                   */
 329         int inDelay;                            /* jitter: in jitter delay?      */
 330         unsigned long endDelay;                 /* jitter: time when delay ends  */
 331         int previousJitterable;                 /* jitterable prev value     */
 332         unsigned char *data;                    /* incoming packet data          */
 333 };
 334
 335 /*
 336  * Permit easy lookup of keyboard events to send, versus
 337  * the bitmap which comes from the tablet. This hides the
 338  * issue that the F_keys are not sequentially numbered.
 339  */
 340 static int macroKeyEvents[] = {
 341         KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
 342         KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
 343         KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
 344         KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
 345         KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
 346         KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
 347 };
 348
 349 /***********************************************************************
 350  * Relative reports deliver values in 2's complement format to
 351  * deal with negative offsets.
 352  */
 353 static int aiptek_convert_from_2s_complement(unsigned char c)
 354 {
 355         int ret;
 356         unsigned char b = c;
 357         int negate = 0;
 358
 359         if ((b & 0x80) != 0) {
 360                 b = ~b;
 361                 b--;
 362                 negate = 1;
 363         }
 364         ret = b;
 365         ret = (negate == 1) ? -ret : ret;
 366         return ret;
 367 }
 368
 369 /***********************************************************************
 370  * aiptek_irq can receive one of six potential reports.
 371  * The documentation for each is in the body of the function.
 372  *
 373  * The tablet reports on several attributes per invocation of
 374  * aiptek_irq. Because the Linux Input Event system allows the
 375  * transmission of ONE attribute per input_report_xxx() call,
 376  * collation has to be done on the other end to reconstitute
 377  * a complete tablet report. Further, the number of Input Event reports
 378  * submitted varies, depending on what USB report type, and circumstance.
 379  * To deal with this, EV_MSC is used to indicate an 'end-of-report'
 380  * message. This has been an undocumented convention understood by the kernel
 381  * tablet driver and clients such as gpm and XFree86's tablet drivers.
 382  *
 383  * Of the information received from the tablet, the one piece I
 384  * cannot transmit is the proximity bit (without resorting to an EV_MSC
 385  * convention above.) I therefore have taken over REL_MISC and ABS_MISC
 386  * (for relative and absolute reports, respectively) for communicating
 387  * Proximity. Why two events? I thought it interesting to know if the
 388  * Proximity event occurred while the tablet was in absolute or relative
 389  * mode.
 390  *
 391  * Other tablets use the notion of a certain minimum stylus pressure
 392  * to infer proximity. While that could have been done, that is yet
 393  * another 'by convention' behavior, the documentation for which
 394  * would be spread between two (or more) pieces of software.
 395  *
 396  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
 397  * replaced with the input_sync() method (which emits EV_SYN.)
 398  */
 399
 400 static void aiptek_irq(struct urb *urb, struct pt_regs *regs)
 401 {
 402         struct aiptek *aiptek = urb->context;
 403         unsigned char *data = aiptek->data;
 404         struct input_dev *inputdev = &aiptek->inputdev;
 405         int jitterable = 0;
 406         int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
 407
 408         switch (urb->status) {
 409         case 0:
 410                 /* Success */
 411                 break;
 412
 413         case -ECONNRESET:
 414         case -ENOENT:
 415         case -ESHUTDOWN:
 416                 /* This urb is terminated, clean up */
 417                 dbg("%s - urb shutting down with status: %d",
 418                     __FUNCTION__, urb->status);
 419                 return;
 420
 421         default:
 422                 dbg("%s - nonzero urb status received: %d",
 423                     __FUNCTION__, urb->status);
 424                 goto exit;
 425         }
 426
 427         /* See if we are in a delay loop -- throw out report if true.
 428          */
 429         if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
 430                 goto exit;
 431         }
 432
 433         aiptek->inDelay = 0;
 434         aiptek->eventCount++;
 435
 436         /* Report 1 delivers relative coordinates with either a stylus
 437          * or the mouse. You do not know, however, which input
 438          * tool generated the event.
 439          */
 440         if (data[0] == 1) {
 441                 if (aiptek->curSetting.coordinateMode ==
 442                     AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 443                         aiptek->diagnostic =
 444                             AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
 445                 } else {
 446                         input_regs(inputdev, regs);
 447
 448                         x = aiptek_convert_from_2s_complement(data[2]);
 449                         y = aiptek_convert_from_2s_complement(data[3]);
 450
 451                         /* jitterable keeps track of whether any button has been pressed.
 452                          * We're also using it to remap the physical mouse button mask
 453                          * to pseudo-settings. (We don't specifically care about it's
 454                          * value after moving/transposing mouse button bitmasks, except
 455                          * that a non-zero value indicates that one or more
 456                          * mouse button was pressed.)
 457                          */
 458                         jitterable = data[5] & 0x07;
 459
 460                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 461                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 462                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 463
 464                         input_report_key(inputdev, BTN_LEFT, left);
 465                         input_report_key(inputdev, BTN_MIDDLE, middle);
 466                         input_report_key(inputdev, BTN_RIGHT, right);
 467                         input_report_rel(inputdev, REL_X, x);
 468                         input_report_rel(inputdev, REL_Y, y);
 469                         input_report_rel(inputdev, REL_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 470
 471                         /* Wheel support is in the form of a single-event
 472                          * firing.
 473                          */
 474                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 475                                 input_report_rel(inputdev, REL_WHEEL,
 476                                                  aiptek->curSetting.wheel);
 477                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 478                         }
 479                         input_sync(inputdev);
 480                 }
 481         }
 482         /* Report 2 is delivered only by the stylus, and delivers
 483          * absolute coordinates.
 484          */
 485         else if (data[0] == 2) {
 486                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 487                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 488                 } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
 489                             (aiptek->curSetting.pointerMode)) {
 490                                 aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 491                 } else {
 492                         input_regs(inputdev, regs);
 493
 494                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 495                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 496                         z = le16_to_cpu(get_unaligned((__le16 *) (data + 6)));
 497
 498                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 499                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 500                         tip = (data[5] & 0x04) != 0 ? 1 : 0;
 501
 502                         /* Use jitterable to re-arrange button masks
 503                          */
 504                         jitterable = data[5] & 0x18;
 505
 506                         bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 507                         pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 508
 509                         /* dv indicates 'data valid' (e.g., the tablet is in sync
 510                          * and has delivered a "correct" report) We will ignore
 511                          * all 'bad' reports...
 512                          */
 513                         if (dv != 0) {
 514                                 /* If we've not already sent a tool_button_?? code, do
 515                                  * so now. Then set FIRED_BIT so it won't be resent unless
 516                                  * the user forces FIRED_BIT off.
 517                                  */
 518                                 if (TOOL_BUTTON_FIRED
 519                                     (aiptek->curSetting.toolMode) == 0) {
 520                                         input_report_key(inputdev,
 521                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 522                                                          1);
 523                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 524                                 }
 525
 526                                 if (p != 0) {
 527                                         input_report_abs(inputdev, ABS_X, x);
 528                                         input_report_abs(inputdev, ABS_Y, y);
 529                                         input_report_abs(inputdev, ABS_PRESSURE, z);
 530
 531                                         input_report_key(inputdev, BTN_TOUCH, tip);
 532                                         input_report_key(inputdev, BTN_STYLUS, bs);
 533                                         input_report_key(inputdev, BTN_STYLUS2, pck);
 534
 535                                         if (aiptek->curSetting.xTilt !=
 536                                             AIPTEK_TILT_DISABLE) {
 537                                                 input_report_abs(inputdev,
 538                                                                  ABS_TILT_X,
 539                                                                  aiptek->curSetting.xTilt);
 540                                         }
 541                                         if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
 542                                                 input_report_abs(inputdev,
 543                                                                  ABS_TILT_Y,
 544                                                                  aiptek->curSetting.yTilt);
 545                                         }
 546
 547                                         /* Wheel support is in the form of a single-event
 548                                          * firing.
 549                                          */
 550                                         if (aiptek->curSetting.wheel !=
 551                                             AIPTEK_WHEEL_DISABLE) {
 552                                                 input_report_abs(inputdev,
 553                                                                  ABS_WHEEL,
 554                                                                  aiptek->curSetting.wheel);
 555                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 556                                         }
 557                                 }
 558                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
 559                                 input_sync(inputdev);
 560                         }
 561                 }
 562         }
 563         /* Report 3's come from the mouse in absolute mode.
 564          */
 565         else if (data[0] == 3) {
 566                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 567                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 568                 } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
 569                         (aiptek->curSetting.pointerMode)) {
 570                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 571                 } else {
 572                         input_regs(inputdev, regs);
 573                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 574                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 575
 576                         jitterable = data[5] & 0x1c;
 577
 578                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 579                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 580                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 581                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 582                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 583
 584                         if (dv != 0) {
 585                                 /* If we've not already sent a tool_button_?? code, do
 586                                  * so now. Then set FIRED_BIT so it won't be resent unless
 587                                  * the user forces FIRED_BIT off.
 588                                  */
 589                                 if (TOOL_BUTTON_FIRED
 590                                     (aiptek->curSetting.toolMode) == 0) {
 591                                         input_report_key(inputdev,
 592                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 593                                                          1);
 594                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 595                                 }
 596
 597                                 if (p != 0) {
 598                                         input_report_abs(inputdev, ABS_X, x);
 599                                         input_report_abs(inputdev, ABS_Y, y);
 600
 601                                         input_report_key(inputdev, BTN_LEFT, left);
 602                                         input_report_key(inputdev, BTN_MIDDLE, middle);
 603                                         input_report_key(inputdev, BTN_RIGHT, right);
 604
 605                                         /* Wheel support is in the form of a single-event
 606                                          * firing.
 607                                          */
 608                                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 609                                                 input_report_abs(inputdev,
 610                                                                  ABS_WHEEL,
 611                                                                  aiptek->curSetting.wheel);
 612                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 613                                         }
 614                                 }
 615                                 input_report_rel(inputdev, REL_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
 616                                 input_sync(inputdev);
 617                         }
 618                 }
 619         }
 620         /* Report 4s come from the macro keys when pressed by stylus
 621          */
 622         else if (data[0] == 4) {
 623                 jitterable = data[1] & 0x18;
 624
 625                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 626                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 627                 tip = (data[1] & 0x04) != 0 ? 1 : 0;
 628                 bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 629                 pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 630
 631                 macro = data[3];
 632                 z = le16_to_cpu(get_unaligned((__le16 *) (data + 4)));
 633
 634                 if (dv != 0) {
 635                         input_regs(inputdev, regs);
 636
 637                         /* If we've not already sent a tool_button_?? code, do
 638                          * so now. Then set FIRED_BIT so it won't be resent unless
 639                          * the user forces FIRED_BIT off.
 640                          */
 641                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 642                                 input_report_key(inputdev,
 643                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 644                                                  1);
 645                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 646                         }
 647
 648                         if (p != 0) {
 649                                 input_report_key(inputdev, BTN_TOUCH, tip);
 650                                 input_report_key(inputdev, BTN_STYLUS, bs);
 651                                 input_report_key(inputdev, BTN_STYLUS2, pck);
 652                                 input_report_abs(inputdev, ABS_PRESSURE, z);
 653                         }
 654
 655                         /* For safety, we're sending key 'break' codes for the
 656                          * neighboring macro keys.
 657                          */
 658                         if (macro > 0) {
 659                                 input_report_key(inputdev,
 660                                                  macroKeyEvents[macro - 1], 0);
 661                         }
 662                         if (macro < 25) {
 663                                 input_report_key(inputdev,
 664                                                  macroKeyEvents[macro + 1], 0);
 665                         }
 666                         input_report_key(inputdev, macroKeyEvents[macro], p);
 667                         input_report_abs(inputdev, ABS_MISC,
 668                                          p | AIPTEK_REPORT_TOOL_STYLUS);
 669                         input_sync(inputdev);
 670                 }
 671         }
 672         /* Report 5s come from the macro keys when pressed by mouse
 673          */
 674         else if (data[0] == 5) {
 675                 jitterable = data[1] & 0x1c;
 676
 677                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 678                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 679                 left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 680                 right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 681                 middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 682                 macro = data[3];
 683
 684                 if (dv != 0) {
 685                         input_regs(inputdev, regs);
 686
 687                         /* If we've not already sent a tool_button_?? code, do
 688                          * so now. Then set FIRED_BIT so it won't be resent unless
 689                          * the user forces FIRED_BIT off.
 690                          */
 691                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 692                                 input_report_key(inputdev,
 693                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 694                                                  1);
 695                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 696                         }
 697
 698                         if (p != 0) {
 699                                 input_report_key(inputdev, BTN_LEFT, left);
 700                                 input_report_key(inputdev, BTN_MIDDLE, middle);
 701                                 input_report_key(inputdev, BTN_RIGHT, right);
 702                         }
 703
 704                         /* For safety, we're sending key 'break' codes for the
 705                          * neighboring macro keys.
 706                          */
 707                         if (macro > 0) {
 708                                 input_report_key(inputdev,
 709                                                  macroKeyEvents[macro - 1], 0);
 710                         }
 711                         if (macro < 25) {
 712                                 input_report_key(inputdev,
 713                                                  macroKeyEvents[macro + 1], 0);
 714                         }
 715
 716                         input_report_key(inputdev, macroKeyEvents[macro], 1);
 717                         input_report_rel(inputdev, ABS_MISC,
 718                                          p | AIPTEK_REPORT_TOOL_MOUSE);
 719                         input_sync(inputdev);
 720                 }
 721         }
 722         /* We have no idea which tool can generate a report 6. Theoretically,
 723          * neither need to, having been given reports 4 & 5 for such use.
 724          * However, report 6 is the 'official-looking' report for macroKeys;
 725          * reports 4 & 5 supposively are used to support unnamed, unknown
 726          * hat switches (which just so happen to be the macroKeys.)
 727          */
 728         else if (data[0] == 6) {
 729                 macro = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 730                 input_regs(inputdev, regs);
 731
 732                 if (macro > 0) {
 733                         input_report_key(inputdev, macroKeyEvents[macro - 1],
 734                                          0);
 735                 }
 736                 if (macro < 25) {
 737                         input_report_key(inputdev, macroKeyEvents[macro + 1],
 738                                          0);
 739                 }
 740
 741                 /* If we've not already sent a tool_button_?? code, do
 742                  * so now. Then set FIRED_BIT so it won't be resent unless
 743                  * the user forces FIRED_BIT off.
 744                  */
 745                 if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 746                         input_report_key(inputdev,
 747                                          TOOL_BUTTON(aiptek->curSetting.
 748                                                      toolMode), 1);
 749                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 750                 }
 751
 752                 input_report_key(inputdev, macroKeyEvents[macro], 1);
 753                 input_report_abs(inputdev, ABS_MISC,
 754                                  1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 755                 input_sync(inputdev);
 756         } else {
 757                 dbg("Unknown report %d", data[0]);
 758         }
 759
 760         /* Jitter may occur when the user presses a button on the stlyus
 761          * or the mouse. What we do to prevent that is wait 'x' milliseconds
 762          * following a 'jitterable' event, which should give the hand some time
 763          * stabilize itself.
 764          *
 765          * We just introduced aiptek->previousJitterable to carry forth the
 766          * notion that jitter occurs when the button state changes from on to off:
 767          * a person drawing, holding a button down is not subject to jittering.
 768          * With that in mind, changing from upper button depressed to lower button
 769          * WILL transition through a jitter delay.
 770          */
 771
 772         if (aiptek->previousJitterable != jitterable &&
 773             aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
 774                 aiptek->endDelay = jiffies +
 775                     ((aiptek->curSetting.jitterDelay * HZ) / 1000);
 776                 aiptek->inDelay = 1;
 777         }
 778         aiptek->previousJitterable = jitterable;
 779
 780 exit:
 781         retval = usb_submit_urb(urb, GFP_ATOMIC);
 782         if (retval != 0) {
 783                 err("%s - usb_submit_urb failed with result %d",
 784                     __FUNCTION__, retval);
 785         }
 786 }
 787
 788 /***********************************************************************
 789  * These are the USB id's known so far. We do not identify them to
 790  * specific Aiptek model numbers, because there has been overlaps,
 791  * use, and reuse of id's in existing models. Certain models have
 792  * been known to use more than one ID, indicative perhaps of
 793  * manufacturing revisions. In any event, we consider these
 794  * IDs to not be model-specific nor unique.
 795  */
 796 static const struct usb_device_id aiptek_ids[] = {
 797         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
 798         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
 799         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
 800         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
 801         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
 802         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
 803         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
 804         {}
 805 };
 806
 807 MODULE_DEVICE_TABLE(usb, aiptek_ids);
 808
 809 /***********************************************************************
 810  * Open an instance of the tablet driver.
 811  */
 812 static int aiptek_open(struct input_dev *inputdev)
 813 {
 814         struct aiptek *aiptek = inputdev->private;
 815
 816         aiptek->urb->dev = aiptek->usbdev;
 817         if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0)
 818                 return -EIO;
 819
 820         return 0;
 821 }
 822
 823 /***********************************************************************
 824  * Close an instance of the tablet driver.
 825  */
 826 static void aiptek_close(struct input_dev *inputdev)
 827 {
 828         struct aiptek *aiptek = inputdev->private;
 829
 830         usb_kill_urb(aiptek->urb);
 831 }
 832
 833 /***********************************************************************
 834  * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
 835  * where they were known as usb_set_report and usb_get_report.
 836  */
 837 static int
 838 aiptek_set_report(struct aiptek *aiptek,
 839                   unsigned char report_type,
 840                   unsigned char report_id, void *buffer, int size)
 841 {
 842         return usb_control_msg(aiptek->usbdev,
 843                                usb_sndctrlpipe(aiptek->usbdev, 0),
 844                                USB_REQ_SET_REPORT,
 845                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 846                                USB_DIR_OUT, (report_type << 8) + report_id,
 847                                aiptek->ifnum, buffer, size, 5000);
 848 }
 849
 850 static int
 851 aiptek_get_report(struct aiptek *aiptek,
 852                   unsigned char report_type,
 853                   unsigned char report_id, void *buffer, int size)
 854 {
 855         return usb_control_msg(aiptek->usbdev,
 856                                usb_rcvctrlpipe(aiptek->usbdev, 0),
 857                                USB_REQ_GET_REPORT,
 858                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 859                                USB_DIR_IN, (report_type << 8) + report_id,
 860                                aiptek->ifnum, buffer, size, 5000);
 861 }
 862
 863 /***********************************************************************
 864  * Send a command to the tablet.
 865  */
 866 static int
 867 aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
 868 {
 869         const int sizeof_buf = 3 * sizeof(u8);
 870         int ret;
 871         u8 *buf;
 872
 873         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 874         if (!buf)
 875                 return -ENOMEM;
 876
 877         buf[0] = 2;
 878         buf[1] = command;
 879         buf[2] = data;
 880
 881         if ((ret =
 882              aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 883                 dbg("aiptek_program: failed, tried to send: 0x%02x 0x%02x",
 884                     command, data);
 885         }
 886         kfree(buf);
 887         return ret < 0 ? ret : 0;
 888 }
 889
 890 /***********************************************************************
 891  * Retrieve information from the tablet. Querying info is defined as first
 892  * sending the {command,data} sequence as a command, followed by a wait
 893  * (aka, "programmaticDelay") and then a "read" request.
 894  */
 895 static int
 896 aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
 897 {
 898         const int sizeof_buf = 3 * sizeof(u8);
 899         int ret;
 900         u8 *buf;
 901
 902         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 903         if (!buf)
 904                 return -ENOMEM;
 905
 906         buf[0] = 2;
 907         buf[1] = command;
 908         buf[2] = data;
 909
 910         if (aiptek_command(aiptek, command, data) != 0) {
 911                 kfree(buf);
 912                 return -EIO;
 913         }
 914         msleep(aiptek->curSetting.programmableDelay);
 915
 916         if ((ret =
 917              aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 918                 dbg("aiptek_query failed: returned 0x%02x 0x%02x 0x%02x",
 919                     buf[0], buf[1], buf[2]);
 920                 ret = -EIO;
 921         } else {
 922                 ret = le16_to_cpu(get_unaligned((__le16 *) (buf + 1)));
 923         }
 924         kfree(buf);
 925         return ret;
 926 }
 927
 928 /***********************************************************************
 929  * Program the tablet into either absolute or relative mode.
 930  * We also get information about the tablet's size.
 931  */
 932 static int aiptek_program_tablet(struct aiptek *aiptek)
 933 {
 934         int ret;
 935         /* Execute Resolution500LPI */
 936         if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
 937                 return ret;
 938
 939         /* Query getModelCode */
 940         if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
 941                 return ret;
 942         aiptek->features.modelCode = ret & 0xff;
 943
 944         /* Query getODMCode */
 945         if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
 946                 return ret;
 947         aiptek->features.odmCode = ret;
 948
 949         /* Query getFirmwareCode */
 950         if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
 951                 return ret;
 952         aiptek->features.firmwareCode = ret;
 953
 954         /* Query getXextension */
 955         if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
 956                 return ret;
 957         aiptek->inputdev.absmin[ABS_X] = 0;
 958         aiptek->inputdev.absmax[ABS_X] = ret - 1;
 959
 960         /* Query getYextension */
 961         if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
 962                 return ret;
 963         aiptek->inputdev.absmin[ABS_Y] = 0;
 964         aiptek->inputdev.absmax[ABS_Y] = ret - 1;
 965
 966         /* Query getPressureLevels */
 967         if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
 968                 return ret;
 969         aiptek->inputdev.absmin[ABS_PRESSURE] = 0;
 970         aiptek->inputdev.absmax[ABS_PRESSURE] = ret - 1;
 971
 972         /* Depending on whether we are in absolute or relative mode, we will
 973          * do a switchToTablet(absolute) or switchToMouse(relative) command.
 974          */
 975         if (aiptek->curSetting.coordinateMode ==
 976             AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 977                 /* Execute switchToTablet */
 978                 if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
 979                         return ret;
 980                 }
 981         } else {
 982                 /* Execute switchToMouse */
 983                 if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
 984                         return ret;
 985                 }
 986         }
 987
 988         /* Enable the macro keys */
 989         if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
 990                 return ret;
 991 #if 0
 992         /* Execute FilterOn */
 993         if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
 994                 return ret;
 995 #endif
 996
 997         /* Execute AutoGainOn */
 998         if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
 999                 return ret;
1000
1001         /* Reset the eventCount, so we track events from last (re)programming
1002          */
1003         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
1004         aiptek->eventCount = 0;
1005
1006         return 0;
1007 }
1008
1009 /***********************************************************************
1010  * Sysfs functions. Sysfs prefers that individually-tunable parameters
1011  * exist in their separate pseudo-files. Summary data that is immutable
1012  * may exist in a singular file so long as you don't define a writeable
1013  * interface.
1014  */
1015
1016 /***********************************************************************
1017  * support the 'size' file -- display support
1018  */
1019 static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
1020 {
1021         struct aiptek *aiptek = dev_get_drvdata(dev);
1022
1023         if (aiptek == NULL)
1024                 return 0;
1025
1026         return snprintf(buf, PAGE_SIZE, "%dx%d\n",
1027                         aiptek->inputdev.absmax[ABS_X] + 1,
1028                         aiptek->inputdev.absmax[ABS_Y] + 1);
1029 }
1030
1031 /* These structs define the sysfs files, param #1 is the name of the
1032  * file, param 2 is the file permissions, param 3 & 4 are to the
1033  * output generator and input parser routines. Absence of a routine is
1034  * permitted -- it only means can't either 'cat' the file, or send data
1035  * to it.
1036  */
1037 static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
1038
1039 /***********************************************************************
1040  * support routines for the 'product_id' file
1041  */
1042 static ssize_t show_tabletProductId(struct device *dev, struct device_attribute *attr, char *buf)
1043 {
1044         struct aiptek *aiptek = dev_get_drvdata(dev);
1045
1046         if (aiptek == NULL)
1047                 return 0;
1048
1049         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
1050                         aiptek->inputdev.id.product);
1051 }
1052
1053 static DEVICE_ATTR(product_id, S_IRUGO, show_tabletProductId, NULL);
1054
1055 /***********************************************************************
1056  * support routines for the 'vendor_id' file
1057  */
1058 static ssize_t show_tabletVendorId(struct device *dev, struct device_attribute *attr, char *buf)
1059 {
1060         struct aiptek *aiptek = dev_get_drvdata(dev);
1061
1062         if (aiptek == NULL)
1063                 return 0;
1064
1065         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->inputdev.id.vendor);
1066 }
1067
1068 static DEVICE_ATTR(vendor_id, S_IRUGO, show_tabletVendorId, NULL);
1069
1070 /***********************************************************************
1071  * support routines for the 'vendor' file
1072  */
1073 static ssize_t show_tabletManufacturer(struct device *dev, struct device_attribute *attr, char *buf)
1074 {
1075         struct aiptek *aiptek = dev_get_drvdata(dev);
1076         int retval;
1077
1078         if (aiptek == NULL)
1079                 return 0;
1080
1081         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->manufacturer);
1082         return retval;
1083 }
1084
1085 static DEVICE_ATTR(vendor, S_IRUGO, show_tabletManufacturer, NULL);
1086
1087 /***********************************************************************
1088  * support routines for the 'product' file
1089  */
1090 static ssize_t show_tabletProduct(struct device *dev, struct device_attribute *attr, char *buf)
1091 {
1092         struct aiptek *aiptek = dev_get_drvdata(dev);
1093         int retval;
1094
1095         if (aiptek == NULL)
1096                 return 0;
1097
1098         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->product);
1099         return retval;
1100 }
1101
1102 static DEVICE_ATTR(product, S_IRUGO, show_tabletProduct, NULL);
1103
1104 /***********************************************************************
1105  * support routines for the 'pointer_mode' file. Note that this file
1106  * both displays current setting and allows reprogramming.
1107  */
1108 static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
1109 {
1110         struct aiptek *aiptek = dev_get_drvdata(dev);
1111         char *s;
1112
1113         if (aiptek == NULL)
1114                 return 0;
1115
1116         switch (aiptek->curSetting.pointerMode) {
1117         case AIPTEK_POINTER_ONLY_STYLUS_MODE:
1118                 s = "stylus";
1119                 break;
1120
1121         case AIPTEK_POINTER_ONLY_MOUSE_MODE:
1122                 s = "mouse";
1123                 break;
1124
1125         case AIPTEK_POINTER_EITHER_MODE:
1126                 s = "either";
1127                 break;
1128
1129         default:
1130                 s = "unknown";
1131                 break;
1132         }
1133         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1134 }
1135
1136 static ssize_t
1137 store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1138 {
1139         struct aiptek *aiptek = dev_get_drvdata(dev);
1140         if (aiptek == NULL)
1141                 return 0;
1142
1143         if (strcmp(buf, "stylus") == 0) {
1144                 aiptek->newSetting.pointerMode =
1145                     AIPTEK_POINTER_ONLY_STYLUS_MODE;
1146         } else if (strcmp(buf, "mouse") == 0) {
1147                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_ONLY_MOUSE_MODE;
1148         } else if (strcmp(buf, "either") == 0) {
1149                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
1150         }
1151         return count;
1152 }
1153
1154 static DEVICE_ATTR(pointer_mode,
1155                    S_IRUGO | S_IWUGO,
1156                    show_tabletPointerMode, store_tabletPointerMode);
1157
1158 /***********************************************************************
1159  * support routines for the 'coordinate_mode' file. Note that this file
1160  * both displays current setting and allows reprogramming.
1161  */
1162 static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
1163 {
1164         struct aiptek *aiptek = dev_get_drvdata(dev);
1165         char *s;
1166
1167         if (aiptek == NULL)
1168                 return 0;
1169
1170         switch (aiptek->curSetting.coordinateMode) {
1171         case AIPTEK_COORDINATE_ABSOLUTE_MODE:
1172                 s = "absolute";
1173                 break;
1174
1175         case AIPTEK_COORDINATE_RELATIVE_MODE:
1176                 s = "relative";
1177                 break;
1178
1179         default:
1180                 s = "unknown";
1181                 break;
1182         }
1183         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1184 }
1185
1186 static ssize_t
1187 store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1188 {
1189         struct aiptek *aiptek = dev_get_drvdata(dev);
1190         if (aiptek == NULL)
1191                 return 0;
1192
1193         if (strcmp(buf, "absolute") == 0) {
1194                 aiptek->newSetting.pointerMode =
1195                     AIPTEK_COORDINATE_ABSOLUTE_MODE;
1196         } else if (strcmp(buf, "relative") == 0) {
1197                 aiptek->newSetting.pointerMode =
1198                     AIPTEK_COORDINATE_RELATIVE_MODE;
1199         }
1200         return count;
1201 }
1202
1203 static DEVICE_ATTR(coordinate_mode,
1204                    S_IRUGO | S_IWUGO,
1205                    show_tabletCoordinateMode, store_tabletCoordinateMode);
1206
1207 /***********************************************************************
1208  * support routines for the 'tool_mode' file. Note that this file
1209  * both displays current setting and allows reprogramming.
1210  */
1211 static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
1212 {
1213         struct aiptek *aiptek = dev_get_drvdata(dev);
1214         char *s;
1215
1216         if (aiptek == NULL)
1217                 return 0;
1218
1219         switch (TOOL_BUTTON(aiptek->curSetting.toolMode)) {
1220         case AIPTEK_TOOL_BUTTON_MOUSE_MODE:
1221                 s = "mouse";
1222                 break;
1223
1224         case AIPTEK_TOOL_BUTTON_ERASER_MODE:
1225                 s = "eraser";
1226                 break;
1227
1228         case AIPTEK_TOOL_BUTTON_PENCIL_MODE:
1229                 s = "pencil";
1230                 break;
1231
1232         case AIPTEK_TOOL_BUTTON_PEN_MODE:
1233                 s = "pen";
1234                 break;
1235
1236         case AIPTEK_TOOL_BUTTON_BRUSH_MODE:
1237                 s = "brush";
1238                 break;
1239
1240         case AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE:
1241                 s = "airbrush";
1242                 break;
1243
1244         case AIPTEK_TOOL_BUTTON_LENS_MODE:
1245                 s = "lens";
1246                 break;
1247
1248         default:
1249                 s = "unknown";
1250                 break;
1251         }
1252         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1253 }
1254
1255 static ssize_t
1256 store_tabletToolMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1257 {
1258         struct aiptek *aiptek = dev_get_drvdata(dev);
1259         if (aiptek == NULL)
1260                 return 0;
1261
1262         if (strcmp(buf, "mouse") == 0) {
1263                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_MOUSE_MODE;
1264         } else if (strcmp(buf, "eraser") == 0) {
1265                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_ERASER_MODE;
1266         } else if (strcmp(buf, "pencil") == 0) {
1267                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PENCIL_MODE;
1268         } else if (strcmp(buf, "pen") == 0) {
1269                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
1270         } else if (strcmp(buf, "brush") == 0) {
1271                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_BRUSH_MODE;
1272         } else if (strcmp(buf, "airbrush") == 0) {
1273                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE;
1274         } else if (strcmp(buf, "lens") == 0) {
1275                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_LENS_MODE;
1276         }
1277
1278         return count;
1279 }
1280
1281 static DEVICE_ATTR(tool_mode,
1282                    S_IRUGO | S_IWUGO,
1283                    show_tabletToolMode, store_tabletToolMode);
1284
1285 /***********************************************************************
1286  * support routines for the 'xtilt' file. Note that this file
1287  * both displays current setting and allows reprogramming.
1288  */
1289 static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *attr, char *buf)
1290 {
1291         struct aiptek *aiptek = dev_get_drvdata(dev);
1292
1293         if (aiptek == NULL)
1294                 return 0;
1295
1296         if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
1297                 return snprintf(buf, PAGE_SIZE, "disable\n");
1298         } else {
1299                 return snprintf(buf, PAGE_SIZE, "%d\n",
1300                                 aiptek->curSetting.xTilt);
1301         }
1302 }
1303
1304 static ssize_t
1305 store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1306 {
1307         struct aiptek *aiptek = dev_get_drvdata(dev);
1308         int x;
1309
1310         if (aiptek == NULL)
1311                 return 0;
1312
1313         if (strcmp(buf, "disable") == 0) {
1314                 aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
1315         } else {
1316                 x = (int)simple_strtol(buf, NULL, 10);
1317                 if (x >= AIPTEK_TILT_MIN && x <= AIPTEK_TILT_MAX) {
1318                         aiptek->newSetting.xTilt = x;
1319                 }
1320         }
1321         return count;
1322 }
1323
1324 static DEVICE_ATTR(xtilt,
1325                    S_IRUGO | S_IWUGO, show_tabletXtilt, store_tabletXtilt);
1326
1327 /***********************************************************************
1328  * support routines for the 'ytilt' file. Note that this file
1329  * both displays current setting and allows reprogramming.
1330  */
1331 static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *attr, char *buf)
1332 {
1333         struct aiptek *aiptek = dev_get_drvdata(dev);
1334
1335         if (aiptek == NULL)
1336                 return 0;
1337
1338         if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
1339                 return snprintf(buf, PAGE_SIZE, "disable\n");
1340         } else {
1341                 return snprintf(buf, PAGE_SIZE, "%d\n",
1342                                 aiptek->curSetting.yTilt);
1343         }
1344 }
1345
1346 static ssize_t
1347 store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1348 {
1349         struct aiptek *aiptek = dev_get_drvdata(dev);
1350         int y;
1351
1352         if (aiptek == NULL)
1353                 return 0;
1354
1355         if (strcmp(buf, "disable") == 0) {
1356                 aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
1357         } else {
1358                 y = (int)simple_strtol(buf, NULL, 10);
1359                 if (y >= AIPTEK_TILT_MIN && y <= AIPTEK_TILT_MAX) {
1360                         aiptek->newSetting.yTilt = y;
1361                 }
1362         }
1363         return count;
1364 }
1365
1366 static DEVICE_ATTR(ytilt,
1367                    S_IRUGO | S_IWUGO, show_tabletYtilt, store_tabletYtilt);
1368
1369 /***********************************************************************
1370  * support routines for the 'jitter' file. Note that this file
1371  * both displays current setting and allows reprogramming.
1372  */
1373 static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribute *attr, char *buf)
1374 {
1375         struct aiptek *aiptek = dev_get_drvdata(dev);
1376
1377         if (aiptek == NULL)
1378                 return 0;
1379
1380         return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
1381 }
1382
1383 static ssize_t
1384 store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1385 {
1386         struct aiptek *aiptek = dev_get_drvdata(dev);
1387
1388         if (aiptek == NULL)
1389                 return 0;
1390
1391         aiptek->newSetting.jitterDelay = (int)simple_strtol(buf, NULL, 10);
1392         return count;
1393 }
1394
1395 static DEVICE_ATTR(jitter,
1396                    S_IRUGO | S_IWUGO,
1397                    show_tabletJitterDelay, store_tabletJitterDelay);
1398
1399 /***********************************************************************
1400  * support routines for the 'delay' file. Note that this file
1401  * both displays current setting and allows reprogramming.
1402  */
1403 static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, char *buf)
1404 {
1405         struct aiptek *aiptek = dev_get_drvdata(dev);
1406
1407         if (aiptek == NULL)
1408                 return 0;
1409
1410         return snprintf(buf, PAGE_SIZE, "%d\n",
1411                         aiptek->curSetting.programmableDelay);
1412 }
1413
1414 static ssize_t
1415 store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1416 {
1417         struct aiptek *aiptek = dev_get_drvdata(dev);
1418
1419         if (aiptek == NULL)
1420                 return 0;
1421
1422         aiptek->newSetting.programmableDelay = (int)simple_strtol(buf, NULL, 10);
1423         return count;
1424 }
1425
1426 static DEVICE_ATTR(delay,
1427                    S_IRUGO | S_IWUGO,
1428                    show_tabletProgrammableDelay, store_tabletProgrammableDelay);
1429
1430 /***********************************************************************
1431  * support routines for the 'input_path' file. Note that this file
1432  * only displays current setting.
1433  */
1434 static ssize_t show_tabletInputDevice(struct device *dev, struct device_attribute *attr, char *buf)
1435 {
1436         struct aiptek *aiptek = dev_get_drvdata(dev);
1437
1438         if (aiptek == NULL)
1439                 return 0;
1440
1441         return snprintf(buf, PAGE_SIZE, "/dev/input/%s\n",
1442                         aiptek->features.inputPath);
1443 }
1444
1445 static DEVICE_ATTR(input_path, S_IRUGO, show_tabletInputDevice, NULL);
1446
1447 /***********************************************************************
1448  * support routines for the 'event_count' file. Note that this file
1449  * only displays current setting.
1450  */
1451 static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attribute *attr, char *buf)
1452 {
1453         struct aiptek *aiptek = dev_get_drvdata(dev);
1454
1455         if (aiptek == NULL)
1456                 return 0;
1457
1458         return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
1459 }
1460
1461 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
1462
1463 /***********************************************************************
1464  * support routines for the 'diagnostic' file. Note that this file
1465  * only displays current setting.
1466  */
1467 static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_attribute *attr, char *buf)
1468 {
1469         struct aiptek *aiptek = dev_get_drvdata(dev);
1470         char *retMsg;
1471
1472         if (aiptek == NULL)
1473                 return 0;
1474
1475         switch (aiptek->diagnostic) {
1476         case AIPTEK_DIAGNOSTIC_NA:
1477                 retMsg = "no errors\n";
1478                 break;
1479
1480         case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
1481                 retMsg = "Error: receiving relative reports\n";
1482                 break;
1483
1484         case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
1485                 retMsg = "Error: receiving absolute reports\n";
1486                 break;
1487
1488         case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
1489                 if (aiptek->curSetting.pointerMode ==
1490                     AIPTEK_POINTER_ONLY_MOUSE_MODE) {
1491                         retMsg = "Error: receiving stylus reports\n";
1492                 } else {
1493                         retMsg = "Error: receiving mouse reports\n";
1494                 }
1495                 break;
1496
1497         default:
1498                 return 0;
1499         }
1500         return snprintf(buf, PAGE_SIZE, retMsg);
1501 }
1502
1503 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
1504
1505 /***********************************************************************
1506  * support routines for the 'stylus_upper' file. Note that this file
1507  * both displays current setting and allows for setting changing.
1508  */
1509 static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
1510 {
1511         struct aiptek *aiptek = dev_get_drvdata(dev);
1512         char *s;
1513
1514         if (aiptek == NULL)
1515                 return 0;
1516
1517         switch (aiptek->curSetting.stylusButtonUpper) {
1518         case AIPTEK_STYLUS_UPPER_BUTTON:
1519                 s = "upper";
1520                 break;
1521
1522         case AIPTEK_STYLUS_LOWER_BUTTON:
1523                 s = "lower";
1524                 break;
1525
1526         default:
1527                 s = "unknown";
1528                 break;
1529         }
1530         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1531 }
1532
1533 static ssize_t
1534 store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1535 {
1536         struct aiptek *aiptek = dev_get_drvdata(dev);
1537
1538         if (aiptek == NULL)
1539                 return 0;
1540
1541         if (strcmp(buf, "upper") == 0) {
1542                 aiptek->newSetting.stylusButtonUpper =
1543                     AIPTEK_STYLUS_UPPER_BUTTON;
1544         } else if (strcmp(buf, "lower") == 0) {
1545                 aiptek->newSetting.stylusButtonUpper =
1546                     AIPTEK_STYLUS_LOWER_BUTTON;
1547         }
1548         return count;
1549 }
1550
1551 static DEVICE_ATTR(stylus_upper,
1552                    S_IRUGO | S_IWUGO,
1553                    show_tabletStylusUpper, store_tabletStylusUpper);
1554
1555 /***********************************************************************
1556  * support routines for the 'stylus_lower' file. Note that this file
1557  * both displays current setting and allows for setting changing.
1558  */
1559 static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribute *attr, char *buf)
1560 {
1561         struct aiptek *aiptek = dev_get_drvdata(dev);
1562         char *s;
1563
1564         if (aiptek == NULL)
1565                 return 0;
1566
1567         switch (aiptek->curSetting.stylusButtonLower) {
1568         case AIPTEK_STYLUS_UPPER_BUTTON:
1569                 s = "upper";
1570                 break;
1571
1572         case AIPTEK_STYLUS_LOWER_BUTTON:
1573                 s = "lower";
1574                 break;
1575
1576         default:
1577                 s = "unknown";
1578                 break;
1579         }
1580         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1581 }
1582
1583 static ssize_t
1584 store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1585 {
1586         struct aiptek *aiptek = dev_get_drvdata(dev);
1587
1588         if (aiptek == NULL)
1589                 return 0;
1590
1591         if (strcmp(buf, "upper") == 0) {
1592                 aiptek->newSetting.stylusButtonLower =
1593                     AIPTEK_STYLUS_UPPER_BUTTON;
1594         } else if (strcmp(buf, "lower") == 0) {
1595                 aiptek->newSetting.stylusButtonLower =
1596                     AIPTEK_STYLUS_LOWER_BUTTON;
1597         }
1598         return count;
1599 }
1600
1601 static DEVICE_ATTR(stylus_lower,
1602                    S_IRUGO | S_IWUGO,
1603                    show_tabletStylusLower, store_tabletStylusLower);
1604
1605 /***********************************************************************
1606  * support routines for the 'mouse_left' file. Note that this file
1607  * both displays current setting and allows for setting changing.
1608  */
1609 static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
1610 {
1611         struct aiptek *aiptek = dev_get_drvdata(dev);
1612         char *s;
1613
1614         if (aiptek == NULL)
1615                 return 0;
1616
1617         switch (aiptek->curSetting.mouseButtonLeft) {
1618         case AIPTEK_MOUSE_LEFT_BUTTON:
1619                 s = "left";
1620                 break;
1621
1622         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1623                 s = "middle";
1624                 break;
1625
1626         case AIPTEK_MOUSE_RIGHT_BUTTON:
1627                 s = "right";
1628                 break;
1629
1630         default:
1631                 s = "unknown";
1632                 break;
1633         }
1634         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1635 }
1636
1637 static ssize_t
1638 store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1639 {
1640         struct aiptek *aiptek = dev_get_drvdata(dev);
1641
1642         if (aiptek == NULL)
1643                 return 0;
1644
1645         if (strcmp(buf, "left") == 0) {
1646                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
1647         } else if (strcmp(buf, "middle") == 0) {
1648                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_MIDDLE_BUTTON;
1649         } else if (strcmp(buf, "right") == 0) {
1650                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_RIGHT_BUTTON;
1651         }
1652         return count;
1653 }
1654
1655 static DEVICE_ATTR(mouse_left,
1656                    S_IRUGO | S_IWUGO,
1657                    show_tabletMouseLeft, store_tabletMouseLeft);
1658
1659 /***********************************************************************
1660  * support routines for the 'mouse_middle' file. Note that this file
1661  * both displays current setting and allows for setting changing.
1662  */
1663 static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, char *buf)
1664 {
1665         struct aiptek *aiptek = dev_get_drvdata(dev);
1666         char *s;
1667
1668         if (aiptek == NULL)
1669                 return 0;
1670
1671         switch (aiptek->curSetting.mouseButtonMiddle) {
1672         case AIPTEK_MOUSE_LEFT_BUTTON:
1673                 s = "left";
1674                 break;
1675
1676         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1677                 s = "middle";
1678                 break;
1679
1680         case AIPTEK_MOUSE_RIGHT_BUTTON:
1681                 s = "right";
1682                 break;
1683
1684         default:
1685                 s = "unknown";
1686                 break;
1687         }
1688         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1689 }
1690
1691 static ssize_t
1692 store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1693 {
1694         struct aiptek *aiptek = dev_get_drvdata(dev);
1695
1696         if (aiptek == NULL)
1697                 return 0;
1698
1699         if (strcmp(buf, "left") == 0) {
1700                 aiptek->newSetting.mouseButtonMiddle = AIPTEK_MOUSE_LEFT_BUTTON;
1701         } else if (strcmp(buf, "middle") == 0) {
1702                 aiptek->newSetting.mouseButtonMiddle =
1703                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1704         } else if (strcmp(buf, "right") == 0) {
1705                 aiptek->newSetting.mouseButtonMiddle =
1706                     AIPTEK_MOUSE_RIGHT_BUTTON;
1707         }
1708         return count;
1709 }
1710
1711 static DEVICE_ATTR(mouse_middle,
1712                    S_IRUGO | S_IWUGO,
1713                    show_tabletMouseMiddle, store_tabletMouseMiddle);
1714
1715 /***********************************************************************
1716  * support routines for the 'mouse_right' file. Note that this file
1717  * both displays current setting and allows for setting changing.
1718  */
1719 static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute *attr, char *buf)
1720 {
1721         struct aiptek *aiptek = dev_get_drvdata(dev);
1722         char *s;
1723
1724         if (aiptek == NULL)
1725                 return 0;
1726
1727         switch (aiptek->curSetting.mouseButtonRight) {
1728         case AIPTEK_MOUSE_LEFT_BUTTON:
1729                 s = "left";
1730                 break;
1731
1732         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1733                 s = "middle";
1734                 break;
1735
1736         case AIPTEK_MOUSE_RIGHT_BUTTON:
1737                 s = "right";
1738                 break;
1739
1740         default:
1741                 s = "unknown";
1742                 break;
1743         }
1744         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1745 }
1746
1747 static ssize_t
1748 store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1749 {
1750         struct aiptek *aiptek = dev_get_drvdata(dev);
1751
1752         if (aiptek == NULL)
1753                 return 0;
1754
1755         if (strcmp(buf, "left") == 0) {
1756                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_LEFT_BUTTON;
1757         } else if (strcmp(buf, "middle") == 0) {
1758                 aiptek->newSetting.mouseButtonRight =
1759                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1760         } else if (strcmp(buf, "right") == 0) {
1761                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
1762         }
1763         return count;
1764 }
1765
1766 static DEVICE_ATTR(mouse_right,
1767                    S_IRUGO | S_IWUGO,
1768                    show_tabletMouseRight, store_tabletMouseRight);
1769
1770 /***********************************************************************
1771  * support routines for the 'wheel' file. Note that this file
1772  * both displays current setting and allows for setting changing.
1773  */
1774 static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *attr, char *buf)
1775 {
1776         struct aiptek *aiptek = dev_get_drvdata(dev);
1777
1778         if (aiptek == NULL)
1779                 return 0;
1780
1781         if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
1782                 return snprintf(buf, PAGE_SIZE, "disable\n");
1783         } else {
1784                 return snprintf(buf, PAGE_SIZE, "%d\n",
1785                                 aiptek->curSetting.wheel);
1786         }
1787 }
1788
1789 static ssize_t
1790 store_tabletWheel(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1791 {
1792         struct aiptek *aiptek = dev_get_drvdata(dev);
1793
1794         if (aiptek == NULL)
1795                 return 0;
1796
1797         aiptek->newSetting.wheel = (int)simple_strtol(buf, NULL, 10);
1798         return count;
1799 }
1800
1801 static DEVICE_ATTR(wheel,
1802                    S_IRUGO | S_IWUGO, show_tabletWheel, store_tabletWheel);
1803
1804 /***********************************************************************
1805  * support routines for the 'execute' file. Note that this file
1806  * both displays current setting and allows for setting changing.
1807  */
1808 static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *attr, char *buf)
1809 {
1810         struct aiptek *aiptek = dev_get_drvdata(dev);
1811
1812         if (aiptek == NULL)
1813                 return 0;
1814
1815         /* There is nothing useful to display, so a one-line manual
1816          * is in order...
1817          */
1818         return snprintf(buf, PAGE_SIZE,
1819                         "Write anything to this file to program your tablet.\n");
1820 }
1821
1822 static ssize_t
1823 store_tabletExecute(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1824 {
1825         struct aiptek *aiptek = dev_get_drvdata(dev);
1826
1827         if (aiptek == NULL)
1828                 return 0;
1829
1830         /* We do not care what you write to this file. Merely the action
1831          * of writing to this file triggers a tablet reprogramming.
1832          */
1833         memcpy(&aiptek->curSetting, &aiptek->newSetting,
1834                sizeof(struct aiptek_settings));
1835
1836         if (aiptek_program_tablet(aiptek) < 0)
1837                 return -EIO;
1838
1839         return count;
1840 }
1841
1842 static DEVICE_ATTR(execute,
1843                    S_IRUGO | S_IWUGO, show_tabletExecute, store_tabletExecute);
1844
1845 /***********************************************************************
1846  * support routines for the 'odm_code' file. Note that this file
1847  * only displays current setting.
1848  */
1849 static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *attr, char *buf)
1850 {
1851         struct aiptek *aiptek = dev_get_drvdata(dev);
1852
1853         if (aiptek == NULL)
1854                 return 0;
1855
1856         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
1857 }
1858
1859 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
1860
1861 /***********************************************************************
1862  * support routines for the 'model_code' file. Note that this file
1863  * only displays current setting.
1864  */
1865 static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute *attr, char *buf)
1866 {
1867         struct aiptek *aiptek = dev_get_drvdata(dev);
1868
1869         if (aiptek == NULL)
1870                 return 0;
1871
1872         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
1873 }
1874
1875 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
1876
1877 /***********************************************************************
1878  * support routines for the 'firmware_code' file. Note that this file
1879  * only displays current setting.
1880  */
1881 static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *attr, char *buf)
1882 {
1883         struct aiptek *aiptek = dev_get_drvdata(dev);
1884
1885         if (aiptek == NULL)
1886                 return 0;
1887
1888         return snprintf(buf, PAGE_SIZE, "%04x\n",
1889                         aiptek->features.firmwareCode);
1890 }
1891
1892 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
1893
1894 /***********************************************************************
1895  * This routine removes all existing sysfs files managed by this device
1896  * driver.
1897  */
1898 static void aiptek_delete_files(struct device *dev)
1899 {
1900         device_remove_file(dev, &dev_attr_size);
1901         device_remove_file(dev, &dev_attr_product_id);
1902         device_remove_file(dev, &dev_attr_vendor_id);
1903         device_remove_file(dev, &dev_attr_vendor);
1904         device_remove_file(dev, &dev_attr_product);
1905         device_remove_file(dev, &dev_attr_pointer_mode);
1906         device_remove_file(dev, &dev_attr_coordinate_mode);
1907         device_remove_file(dev, &dev_attr_tool_mode);
1908         device_remove_file(dev, &dev_attr_xtilt);
1909         device_remove_file(dev, &dev_attr_ytilt);
1910         device_remove_file(dev, &dev_attr_jitter);
1911         device_remove_file(dev, &dev_attr_delay);
1912         device_remove_file(dev, &dev_attr_input_path);
1913         device_remove_file(dev, &dev_attr_event_count);
1914         device_remove_file(dev, &dev_attr_diagnostic);
1915         device_remove_file(dev, &dev_attr_odm_code);
1916         device_remove_file(dev, &dev_attr_model_code);
1917         device_remove_file(dev, &dev_attr_firmware_code);
1918         device_remove_file(dev, &dev_attr_stylus_lower);
1919         device_remove_file(dev, &dev_attr_stylus_upper);
1920         device_remove_file(dev, &dev_attr_mouse_left);
1921         device_remove_file(dev, &dev_attr_mouse_middle);
1922         device_remove_file(dev, &dev_attr_mouse_right);
1923         device_remove_file(dev, &dev_attr_wheel);
1924         device_remove_file(dev, &dev_attr_execute);
1925 }
1926
1927 /***********************************************************************
1928  * This routine creates the sysfs files managed by this device
1929  * driver.
1930  */
1931 static int aiptek_add_files(struct device *dev)
1932 {
1933         int ret;
1934
1935         if ((ret = device_create_file(dev, &dev_attr_size)) ||
1936             (ret = device_create_file(dev, &dev_attr_product_id)) ||
1937             (ret = device_create_file(dev, &dev_attr_vendor_id)) ||
1938             (ret = device_create_file(dev, &dev_attr_vendor)) ||
1939             (ret = device_create_file(dev, &dev_attr_product)) ||
1940             (ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
1941             (ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
1942             (ret = device_create_file(dev, &dev_attr_tool_mode)) ||
1943             (ret = device_create_file(dev, &dev_attr_xtilt)) ||
1944             (ret = device_create_file(dev, &dev_attr_ytilt)) ||
1945             (ret = device_create_file(dev, &dev_attr_jitter)) ||
1946             (ret = device_create_file(dev, &dev_attr_delay)) ||
1947             (ret = device_create_file(dev, &dev_attr_input_path)) ||
1948             (ret = device_create_file(dev, &dev_attr_event_count)) ||
1949             (ret = device_create_file(dev, &dev_attr_diagnostic)) ||
1950             (ret = device_create_file(dev, &dev_attr_odm_code)) ||
1951             (ret = device_create_file(dev, &dev_attr_model_code)) ||
1952             (ret = device_create_file(dev, &dev_attr_firmware_code)) ||
1953             (ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
1954             (ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
1955             (ret = device_create_file(dev, &dev_attr_mouse_left)) ||
1956             (ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
1957             (ret = device_create_file(dev, &dev_attr_mouse_right)) ||
1958             (ret = device_create_file(dev, &dev_attr_wheel)) ||
1959             (ret = device_create_file(dev, &dev_attr_execute))) {
1960                 err("aiptek: killing own sysfs device files\n");
1961                 aiptek_delete_files(dev);
1962         }
1963         return ret;
1964 }
1965
1966 /***********************************************************************
1967  * This routine is called when a tablet has been identified. It basically
1968  * sets up the tablet and the driver's internal structures.
1969  */
1970 static int
1971 aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
1972 {
1973         struct usb_device *usbdev = interface_to_usbdev(intf);
1974         struct usb_endpoint_descriptor *endpoint;
1975         struct aiptek *aiptek;
1976         struct input_dev *inputdev;
1977         struct input_handle *inputhandle;
1978         struct list_head *node, *next;
1979         char path[64 + 1];
1980         int i;
1981         int speeds[] = { 0,
1982                 AIPTEK_PROGRAMMABLE_DELAY_50,
1983                 AIPTEK_PROGRAMMABLE_DELAY_400,
1984                 AIPTEK_PROGRAMMABLE_DELAY_25,
1985                 AIPTEK_PROGRAMMABLE_DELAY_100,
1986                 AIPTEK_PROGRAMMABLE_DELAY_200,
1987                 AIPTEK_PROGRAMMABLE_DELAY_300
1988         };
1989
1990         /* programmableDelay is where the command-line specified
1991          * delay is kept. We make it the first element of speeds[],
1992          * so therefore, your override speed is tried first, then the
1993          * remainder. Note that the default value of 400ms will be tried
1994          * if you do not specify any command line parameter.
1995          */
1996         speeds[0] = programmableDelay;
1997
1998         if ((aiptek = kmalloc(sizeof(struct aiptek), GFP_KERNEL)) == NULL)
1999                 return -ENOMEM;
2000         memset(aiptek, 0, sizeof(struct aiptek));
2001
2002         aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
2003                                         SLAB_ATOMIC, &aiptek->data_dma);
2004         if (aiptek->data == NULL) {
2005                 kfree(aiptek);
2006                 return -ENOMEM;
2007         }
2008
2009         aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
2010         if (aiptek->urb == NULL) {
2011                 usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
2012                                 aiptek->data_dma);
2013                 kfree(aiptek);
2014                 return -ENOMEM;
2015         }
2016
2017         /* Set up the curSettings struct. Said struct contains the current
2018          * programmable parameters. The newSetting struct contains changes
2019          * the user makes to the settings via the sysfs interface. Those
2020          * changes are not "committed" to curSettings until the user
2021          * writes to the sysfs/.../execute file.
2022          */
2023         aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
2024         aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
2025         aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
2026         aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
2027         aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
2028         aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
2029         aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
2030         aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
2031         aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
2032         aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
2033         aiptek->curSetting.jitterDelay = jitterDelay;
2034         aiptek->curSetting.programmableDelay = programmableDelay;
2035
2036         /* Both structs should have equivalent settings
2037          */
2038         memcpy(&aiptek->newSetting, &aiptek->curSetting,
2039                sizeof(struct aiptek_settings));
2040
2041         /* Now program the capacities of the tablet, in terms of being
2042          * an input device.
2043          */
2044         aiptek->inputdev.evbit[0] |= BIT(EV_KEY)
2045             | BIT(EV_ABS)
2046             | BIT(EV_REL)
2047             | BIT(EV_MSC);
2048
2049         aiptek->inputdev.absbit[0] |=
2050             (BIT(ABS_X) |
2051              BIT(ABS_Y) |
2052              BIT(ABS_PRESSURE) |
2053              BIT(ABS_TILT_X) |
2054              BIT(ABS_TILT_Y) | BIT(ABS_WHEEL) | BIT(ABS_MISC));
2055
2056         aiptek->inputdev.relbit[0] |=
2057             (BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL) | BIT(REL_MISC));
2058
2059         aiptek->inputdev.keybit[LONG(BTN_LEFT)] |=
2060             (BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE));
2061
2062         aiptek->inputdev.keybit[LONG(BTN_DIGI)] |=
2063             (BIT(BTN_TOOL_PEN) |
2064              BIT(BTN_TOOL_RUBBER) |
2065              BIT(BTN_TOOL_PENCIL) |
2066              BIT(BTN_TOOL_AIRBRUSH) |
2067              BIT(BTN_TOOL_BRUSH) |
2068              BIT(BTN_TOOL_MOUSE) |
2069              BIT(BTN_TOOL_LENS) |
2070              BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2));
2071
2072         aiptek->inputdev.mscbit[0] = BIT(MSC_SERIAL);
2073
2074         /* Programming the tablet macro keys needs to be done with a for loop
2075          * as the keycodes are discontiguous.
2076          */
2077         for (i = 0; i < sizeof(macroKeyEvents) / sizeof(macroKeyEvents[0]); ++i)
2078                 set_bit(macroKeyEvents[i], aiptek->inputdev.keybit);
2079
2080         /* Set up client data, pointers to open and close routines
2081          * for the input device.
2082          */
2083         aiptek->inputdev.private = aiptek;
2084         aiptek->inputdev.open = aiptek_open;
2085         aiptek->inputdev.close = aiptek_close;
2086
2087         /* Determine the usb devices' physical path.
2088          * Asketh not why we always pretend we're using "../input0",
2089          * but I suspect this will have to be refactored one
2090          * day if a single USB device can be a keyboard & a mouse
2091          * & a tablet, and the inputX number actually will tell
2092          * us something...
2093          */
2094         if (usb_make_path(usbdev, path, 64) > 0)
2095                 sprintf(aiptek->features.usbPath, "%s/input0", path);
2096
2097         /* Program the input device coordinate capacities. We do not yet
2098          * know what maximum X, Y, and Z values are, so we're putting fake
2099          * values in. Later, we'll ask the tablet to put in the correct
2100          * values.
2101          */
2102         aiptek->inputdev.absmin[ABS_X] = 0;
2103         aiptek->inputdev.absmax[ABS_X] = 2999;
2104         aiptek->inputdev.absmin[ABS_Y] = 0;
2105         aiptek->inputdev.absmax[ABS_Y] = 2249;
2106         aiptek->inputdev.absmin[ABS_PRESSURE] = 0;
2107         aiptek->inputdev.absmax[ABS_PRESSURE] = 511;
2108         aiptek->inputdev.absmin[ABS_TILT_X] = AIPTEK_TILT_MIN;
2109         aiptek->inputdev.absmax[ABS_TILT_X] = AIPTEK_TILT_MAX;
2110         aiptek->inputdev.absmin[ABS_TILT_Y] = AIPTEK_TILT_MIN;
2111         aiptek->inputdev.absmax[ABS_TILT_Y] = AIPTEK_TILT_MAX;
2112         aiptek->inputdev.absmin[ABS_WHEEL] = AIPTEK_WHEEL_MIN;
2113         aiptek->inputdev.absmax[ABS_WHEEL] = AIPTEK_WHEEL_MAX - 1;
2114         aiptek->inputdev.absfuzz[ABS_X] = 0;
2115         aiptek->inputdev.absfuzz[ABS_Y] = 0;
2116         aiptek->inputdev.absfuzz[ABS_PRESSURE] = 0;
2117         aiptek->inputdev.absfuzz[ABS_TILT_X] = 0;
2118         aiptek->inputdev.absfuzz[ABS_TILT_Y] = 0;
2119         aiptek->inputdev.absfuzz[ABS_WHEEL] = 0;
2120         aiptek->inputdev.absflat[ABS_X] = 0;
2121         aiptek->inputdev.absflat[ABS_Y] = 0;
2122         aiptek->inputdev.absflat[ABS_PRESSURE] = 0;
2123         aiptek->inputdev.absflat[ABS_TILT_X] = 0;
2124         aiptek->inputdev.absflat[ABS_TILT_Y] = 0;
2125         aiptek->inputdev.absflat[ABS_WHEEL] = 0;
2126         aiptek->inputdev.name = "Aiptek";
2127         aiptek->inputdev.phys = aiptek->features.usbPath;
2128         aiptek->inputdev.id.bustype = BUS_USB;
2129         aiptek->inputdev.id.vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2130         aiptek->inputdev.id.product = le16_to_cpu(usbdev->descriptor.idProduct);
2131         aiptek->inputdev.id.version = le16_to_cpu(usbdev->descriptor.bcdDevice);
2132         aiptek->inputdev.dev = &intf->dev;
2133
2134         aiptek->usbdev = usbdev;
2135         aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
2136         aiptek->inDelay = 0;
2137         aiptek->endDelay = 0;
2138         aiptek->previousJitterable = 0;
2139
2140         endpoint = &intf->altsetting[0].endpoint[0].desc;
2141
2142         /* Go set up our URB, which is called when the tablet receives
2143          * input.
2144          */
2145         usb_fill_int_urb(aiptek->urb,
2146                          aiptek->usbdev,
2147                          usb_rcvintpipe(aiptek->usbdev,
2148                                         endpoint->bEndpointAddress),
2149                          aiptek->data, 8, aiptek_irq, aiptek,
2150                          endpoint->bInterval);
2151
2152         aiptek->urb->transfer_dma = aiptek->data_dma;
2153         aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2154
2155         /* Register the tablet as an Input Device
2156          */
2157         input_register_device(&aiptek->inputdev);
2158
2159         /* We now will look for the evdev device which is mapped to
2160          * the tablet. The partial name is kept in the link list of
2161          * input_handles associated with this input device.
2162          * What identifies an evdev input_handler is that it begins
2163          * with 'event', continues with a digit, and that in turn
2164          * is mapped to /{devfs}/input/eventN.
2165          */
2166         inputdev = &aiptek->inputdev;
2167         list_for_each_safe(node, next, &inputdev->h_list) {
2168                 inputhandle = to_handle(node);
2169                 if (strncmp(inputhandle->name, "event", 5) == 0) {
2170                         strcpy(aiptek->features.inputPath, inputhandle->name);
2171                         break;
2172                 }
2173         }
2174
2175         info("input: Aiptek on %s (%s)\n", path, aiptek->features.inputPath);
2176
2177         /* Program the tablet. This sets the tablet up in the mode
2178          * specified in newSetting, and also queries the tablet's
2179          * physical capacities.
2180          *
2181          * Sanity check: if a tablet doesn't like the slow programmatic
2182          * delay, we often get sizes of 0x0. Let's use that as an indicator
2183          * to try faster delays, up to 25 ms. If that logic fails, well, you'll
2184          * have to explain to us how your tablet thinks it's 0x0, and yet that's
2185          * not an error :-)
2186          */
2187
2188         for (i = 0; i < sizeof(speeds) / sizeof(speeds[0]); ++i) {
2189                 aiptek->curSetting.programmableDelay = speeds[i];
2190                 (void)aiptek_program_tablet(aiptek);
2191                 if (aiptek->inputdev.absmax[ABS_X] > 0) {
2192                         info("input: Aiptek using %d ms programming speed\n",
2193                              aiptek->curSetting.programmableDelay);
2194                         break;
2195                 }
2196         }
2197
2198         /* Associate this driver's struct with the usb interface.
2199          */
2200         usb_set_intfdata(intf, aiptek);
2201
2202         /* Set up the sysfs files
2203          */
2204         aiptek_add_files(&intf->dev);
2205
2206         /* Make sure the evdev module is loaded. Assuming evdev IS a module :-)
2207          */
2208         if (request_module("evdev") != 0)
2209                 info("aiptek: error loading 'evdev' module");
2210
2211         return 0;
2212 }
2213
2214 /* Forward declaration */
2215 static void aiptek_disconnect(struct usb_interface *intf);
2216
2217 static struct usb_driver aiptek_driver = {
2218         .owner = THIS_MODULE,
2219         .name = "aiptek",
2220         .probe = aiptek_probe,
2221         .disconnect = aiptek_disconnect,
2222         .id_table = aiptek_ids,
2223 };
2224
2225 /***********************************************************************
2226  * Deal with tablet disconnecting from the system.
2227  */
2228 static void aiptek_disconnect(struct usb_interface *intf)
2229 {
2230         struct aiptek *aiptek = usb_get_intfdata(intf);
2231
2232         /* Disassociate driver's struct with usb interface
2233          */
2234         usb_set_intfdata(intf, NULL);
2235         if (aiptek != NULL) {
2236                 /* Free & unhook everything from the system.
2237                  */
2238                 usb_kill_urb(aiptek->urb);
2239                 input_unregister_device(&aiptek->inputdev);
2240                 aiptek_delete_files(&intf->dev);
2241                 usb_free_urb(aiptek->urb);
2242                 usb_buffer_free(interface_to_usbdev(intf),
2243                                 AIPTEK_PACKET_LENGTH,
2244                                 aiptek->data, aiptek->data_dma);
2245                 kfree(aiptek);
2246         }
2247 }
2248
2249 static int __init aiptek_init(void)
2250 {
2251         int result = usb_register(&aiptek_driver);
2252         if (result == 0) {
2253                 info(DRIVER_VERSION ": " DRIVER_AUTHOR);
2254                 info(DRIVER_DESC);
2255         }
2256         return result;
2257 }
2258
2259 static void __exit aiptek_exit(void)
2260 {
2261         usb_deregister(&aiptek_driver);
2262 }
2263
2264 MODULE_AUTHOR(DRIVER_AUTHOR);
2265 MODULE_DESCRIPTION(DRIVER_DESC);
2266 MODULE_LICENSE("GPL");
2267
2268 module_param(programmableDelay, int, 0);
2269 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
2270 module_param(jitterDelay, int, 0);
2271 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
2272
2273 module_init(aiptek_init);
2274 module_exit(aiptek_exit);