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 openCount;                          /* module use counter            */
 328         int diagnostic;                         /* tablet diagnostic codes       */
 329         unsigned long eventCount;               /* event count                   */
 330         int inDelay;                            /* jitter: in jitter delay?      */
 331         unsigned long endDelay;                 /* jitter: time when delay ends  */
 332         int previousJitterable;                 /* jitterable prev value     */
 333         unsigned char *data;                    /* incoming packet data          */
 334 };
 335
 336 /*
 337  * Permit easy lookup of keyboard events to send, versus
 338  * the bitmap which comes from the tablet. This hides the
 339  * issue that the F_keys are not sequentially numbered.
 340  */
 341 static int macroKeyEvents[] = {
 342         KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
 343         KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
 344         KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
 345         KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
 346         KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
 347         KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
 348 };
 349
 350 /***********************************************************************
 351  * Relative reports deliver values in 2's complement format to
 352  * deal with negative offsets.
 353  */
 354 static int aiptek_convert_from_2s_complement(unsigned char c)
 355 {
 356         int ret;
 357         unsigned char b = c;
 358         int negate = 0;
 359
 360         if ((b & 0x80) != 0) {
 361                 b = ~b;
 362                 b--;
 363                 negate = 1;
 364         }
 365         ret = b;
 366         ret = (negate == 1) ? -ret : ret;
 367         return ret;
 368 }
 369
 370 /***********************************************************************
 371  * aiptek_irq can receive one of six potential reports.
 372  * The documentation for each is in the body of the function.
 373  *
 374  * The tablet reports on several attributes per invocation of
 375  * aiptek_irq. Because the Linux Input Event system allows the
 376  * transmission of ONE attribute per input_report_xxx() call,
 377  * collation has to be done on the other end to reconstitute
 378  * a complete tablet report. Further, the number of Input Event reports
 379  * submitted varies, depending on what USB report type, and circumstance.
 380  * To deal with this, EV_MSC is used to indicate an 'end-of-report'
 381  * message. This has been an undocumented convention understood by the kernel
 382  * tablet driver and clients such as gpm and XFree86's tablet drivers.
 383  *
 384  * Of the information received from the tablet, the one piece I
 385  * cannot transmit is the proximity bit (without resorting to an EV_MSC
 386  * convention above.) I therefore have taken over REL_MISC and ABS_MISC
 387  * (for relative and absolute reports, respectively) for communicating
 388  * Proximity. Why two events? I thought it interesting to know if the
 389  * Proximity event occured while the tablet was in absolute or relative
 390  * mode.
 391  *
 392  * Other tablets use the notion of a certain minimum stylus pressure
 393  * to infer proximity. While that could have been done, that is yet
 394  * another 'by convention' behavior, the documentation for which
 395  * would be spread between two (or more) pieces of software.
 396  *
 397  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
 398  * replaced with the input_sync() method (which emits EV_SYN.)
 399  */
 400
 401 static void aiptek_irq(struct urb *urb, struct pt_regs *regs)
 402 {
 403         struct aiptek *aiptek = urb->context;
 404         unsigned char *data = aiptek->data;
 405         struct input_dev *inputdev = &aiptek->inputdev;
 406         int jitterable = 0;
 407         int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
 408
 409         switch (urb->status) {
 410         case 0:
 411                 /* Success */
 412                 break;
 413
 414         case -ECONNRESET:
 415         case -ENOENT:
 416         case -ESHUTDOWN:
 417                 /* This urb is terminated, clean up */
 418                 dbg("%s - urb shutting down with status: %d",
 419                     __FUNCTION__, urb->status);
 420                 return;
 421
 422         default:
 423                 dbg("%s - nonzero urb status received: %d",
 424                     __FUNCTION__, urb->status);
 425                 goto exit;
 426         }
 427
 428         /* See if we are in a delay loop -- throw out report if true.
 429          */
 430         if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
 431                 goto exit;
 432         }
 433
 434         aiptek->inDelay = 0;
 435         aiptek->eventCount++;
 436
 437         /* Report 1 delivers relative coordinates with either a stylus
 438          * or the mouse. You do not know, however, which input
 439          * tool generated the event.
 440          */
 441         if (data[0] == 1) {
 442                 if (aiptek->curSetting.coordinateMode ==
 443                     AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 444                         aiptek->diagnostic =
 445                             AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
 446                 } else {
 447                         input_regs(inputdev, regs);
 448
 449                         x = aiptek_convert_from_2s_complement(data[2]);
 450                         y = aiptek_convert_from_2s_complement(data[3]);
 451
 452                         /* jitterable keeps track of whether any button has been pressed.
 453                          * We're also using it to remap the physical mouse button mask
 454                          * to pseudo-settings. (We don't specifically care about it's
 455                          * value after moving/transposing mouse button bitmasks, except
 456                          * that a non-zero value indicates that one or more
 457                          * mouse button was pressed.)
 458                          */
 459                         jitterable = data[5] & 0x07;
 460
 461                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 462                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 463                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 464
 465                         input_report_key(inputdev, BTN_LEFT, left);
 466                         input_report_key(inputdev, BTN_MIDDLE, middle);
 467                         input_report_key(inputdev, BTN_RIGHT, right);
 468                         input_report_rel(inputdev, REL_X, x);
 469                         input_report_rel(inputdev, REL_Y, y);
 470                         input_report_rel(inputdev, REL_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 471
 472                         /* Wheel support is in the form of a single-event
 473                          * firing.
 474                          */
 475                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 476                                 input_report_rel(inputdev, REL_WHEEL,
 477                                                  aiptek->curSetting.wheel);
 478                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 479                         }
 480                         input_sync(inputdev);
 481                 }
 482         }
 483         /* Report 2 is delivered only by the stylus, and delivers
 484          * absolute coordinates.
 485          */
 486         else if (data[0] == 2) {
 487                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 488                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 489                 } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
 490                             (aiptek->curSetting.pointerMode)) {
 491                                 aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 492                 } else {
 493                         input_regs(inputdev, regs);
 494
 495                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 496                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 497                         z = le16_to_cpu(get_unaligned((__le16 *) (data + 6)));
 498
 499                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 500                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 501                         tip = (data[5] & 0x04) != 0 ? 1 : 0;
 502
 503                         /* Use jitterable to re-arrange button masks
 504                          */
 505                         jitterable = data[5] & 0x18;
 506
 507                         bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 508                         pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 509
 510                         /* dv indicates 'data valid' (e.g., the tablet is in sync
 511                          * and has delivered a "correct" report) We will ignore
 512                          * all 'bad' reports...
 513                          */
 514                         if (dv != 0) {
 515                                 /* If we've not already sent a tool_button_?? code, do
 516                                  * so now. Then set FIRED_BIT so it won't be resent unless
 517                                  * the user forces FIRED_BIT off.
 518                                  */
 519                                 if (TOOL_BUTTON_FIRED
 520                                     (aiptek->curSetting.toolMode) == 0) {
 521                                         input_report_key(inputdev,
 522                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 523                                                          1);
 524                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 525                                 }
 526
 527                                 if (p != 0) {
 528                                         input_report_abs(inputdev, ABS_X, x);
 529                                         input_report_abs(inputdev, ABS_Y, y);
 530                                         input_report_abs(inputdev, ABS_PRESSURE, z);
 531
 532                                         input_report_key(inputdev, BTN_TOUCH, tip);
 533                                         input_report_key(inputdev, BTN_STYLUS, bs);
 534                                         input_report_key(inputdev, BTN_STYLUS2, pck);
 535
 536                                         if (aiptek->curSetting.xTilt !=
 537                                             AIPTEK_TILT_DISABLE) {
 538                                                 input_report_abs(inputdev,
 539                                                                  ABS_TILT_X,
 540                                                                  aiptek->curSetting.xTilt);
 541                                         }
 542                                         if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
 543                                                 input_report_abs(inputdev,
 544                                                                  ABS_TILT_Y,
 545                                                                  aiptek->curSetting.yTilt);
 546                                         }
 547
 548                                         /* Wheel support is in the form of a single-event
 549                                          * firing.
 550                                          */
 551                                         if (aiptek->curSetting.wheel !=
 552                                             AIPTEK_WHEEL_DISABLE) {
 553                                                 input_report_abs(inputdev,
 554                                                                  ABS_WHEEL,
 555                                                                  aiptek->curSetting.wheel);
 556                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 557                                         }
 558                                 }
 559                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
 560                                 input_sync(inputdev);
 561                         }
 562                 }
 563         }
 564         /* Report 3's come from the mouse in absolute mode.
 565          */
 566         else if (data[0] == 3) {
 567                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 568                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 569                 } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
 570                         (aiptek->curSetting.pointerMode)) {
 571                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 572                 } else {
 573                         input_regs(inputdev, regs);
 574                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 575                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
 576
 577                         jitterable = data[5] & 0x1c;
 578
 579                         p = (data[5] & 0x01) != 0 ? 1 : 0;
 580                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
 581                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 582                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 583                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 584
 585                         if (dv != 0) {
 586                                 /* If we've not already sent a tool_button_?? code, do
 587                                  * so now. Then set FIRED_BIT so it won't be resent unless
 588                                  * the user forces FIRED_BIT off.
 589                                  */
 590                                 if (TOOL_BUTTON_FIRED
 591                                     (aiptek->curSetting.toolMode) == 0) {
 592                                         input_report_key(inputdev,
 593                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
 594                                                          1);
 595                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 596                                 }
 597
 598                                 if (p != 0) {
 599                                         input_report_abs(inputdev, ABS_X, x);
 600                                         input_report_abs(inputdev, ABS_Y, y);
 601
 602                                         input_report_key(inputdev, BTN_LEFT, left);
 603                                         input_report_key(inputdev, BTN_MIDDLE, middle);
 604                                         input_report_key(inputdev, BTN_RIGHT, right);
 605
 606                                         /* Wheel support is in the form of a single-event
 607                                          * firing.
 608                                          */
 609                                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 610                                                 input_report_abs(inputdev,
 611                                                                  ABS_WHEEL,
 612                                                                  aiptek->curSetting.wheel);
 613                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 614                                         }
 615                                 }
 616                                 input_report_rel(inputdev, REL_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
 617                                 input_sync(inputdev);
 618                         }
 619                 }
 620         }
 621         /* Report 4s come from the macro keys when pressed by stylus
 622          */
 623         else if (data[0] == 4) {
 624                 jitterable = data[1] & 0x18;
 625
 626                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 627                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 628                 tip = (data[1] & 0x04) != 0 ? 1 : 0;
 629                 bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 630                 pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 631
 632                 macro = data[3];
 633                 z = le16_to_cpu(get_unaligned((__le16 *) (data + 4)));
 634
 635                 if (dv != 0) {
 636                         input_regs(inputdev, regs);
 637
 638                         /* If we've not already sent a tool_button_?? code, do
 639                          * so now. Then set FIRED_BIT so it won't be resent unless
 640                          * the user forces FIRED_BIT off.
 641                          */
 642                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 643                                 input_report_key(inputdev,
 644                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 645                                                  1);
 646                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 647                         }
 648
 649                         if (p != 0) {
 650                                 input_report_key(inputdev, BTN_TOUCH, tip);
 651                                 input_report_key(inputdev, BTN_STYLUS, bs);
 652                                 input_report_key(inputdev, BTN_STYLUS2, pck);
 653                                 input_report_abs(inputdev, ABS_PRESSURE, z);
 654                         }
 655
 656                         /* For safety, we're sending key 'break' codes for the
 657                          * neighboring macro keys.
 658                          */
 659                         if (macro > 0) {
 660                                 input_report_key(inputdev,
 661                                                  macroKeyEvents[macro - 1], 0);
 662                         }
 663                         if (macro < 25) {
 664                                 input_report_key(inputdev,
 665                                                  macroKeyEvents[macro + 1], 0);
 666                         }
 667                         input_report_key(inputdev, macroKeyEvents[macro], p);
 668                         input_report_abs(inputdev, ABS_MISC,
 669                                          p | AIPTEK_REPORT_TOOL_STYLUS);
 670                         input_sync(inputdev);
 671                 }
 672         }
 673         /* Report 5s come from the macro keys when pressed by mouse
 674          */
 675         else if (data[0] == 5) {
 676                 jitterable = data[1] & 0x1c;
 677
 678                 p = (data[1] & 0x01) != 0 ? 1 : 0;
 679                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
 680                 left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 681                 right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 682                 middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 683                 macro = data[3];
 684
 685                 if (dv != 0) {
 686                         input_regs(inputdev, regs);
 687
 688                         /* If we've not already sent a tool_button_?? code, do
 689                          * so now. Then set FIRED_BIT so it won't be resent unless
 690                          * the user forces FIRED_BIT off.
 691                          */
 692                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 693                                 input_report_key(inputdev,
 694                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
 695                                                  1);
 696                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 697                         }
 698
 699                         if (p != 0) {
 700                                 input_report_key(inputdev, BTN_LEFT, left);
 701                                 input_report_key(inputdev, BTN_MIDDLE, middle);
 702                                 input_report_key(inputdev, BTN_RIGHT, right);
 703                         }
 704
 705                         /* For safety, we're sending key 'break' codes for the
 706                          * neighboring macro keys.
 707                          */
 708                         if (macro > 0) {
 709                                 input_report_key(inputdev,
 710                                                  macroKeyEvents[macro - 1], 0);
 711                         }
 712                         if (macro < 25) {
 713                                 input_report_key(inputdev,
 714                                                  macroKeyEvents[macro + 1], 0);
 715                         }
 716
 717                         input_report_key(inputdev, macroKeyEvents[macro], 1);
 718                         input_report_rel(inputdev, ABS_MISC,
 719                                          p | AIPTEK_REPORT_TOOL_MOUSE);
 720                         input_sync(inputdev);
 721                 }
 722         }
 723         /* We have no idea which tool can generate a report 6. Theoretically,
 724          * neither need to, having been given reports 4 & 5 for such use.
 725          * However, report 6 is the 'official-looking' report for macroKeys;
 726          * reports 4 & 5 supposively are used to support unnamed, unknown
 727          * hat switches (which just so happen to be the macroKeys.)
 728          */
 729         else if (data[0] == 6) {
 730                 macro = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
 731                 input_regs(inputdev, regs);
 732
 733                 if (macro > 0) {
 734                         input_report_key(inputdev, macroKeyEvents[macro - 1],
 735                                          0);
 736                 }
 737                 if (macro < 25) {
 738                         input_report_key(inputdev, macroKeyEvents[macro + 1],
 739                                          0);
 740                 }
 741
 742                 /* If we've not already sent a tool_button_?? code, do
 743                  * so now. Then set FIRED_BIT so it won't be resent unless
 744                  * the user forces FIRED_BIT off.
 745                  */
 746                 if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
 747                         input_report_key(inputdev,
 748                                          TOOL_BUTTON(aiptek->curSetting.
 749                                                      toolMode), 1);
 750                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
 751                 }
 752
 753                 input_report_key(inputdev, macroKeyEvents[macro], 1);
 754                 input_report_abs(inputdev, ABS_MISC,
 755                                  1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 756                 input_sync(inputdev);
 757         } else {
 758                 dbg("Unknown report %d", data[0]);
 759         }
 760
 761         /* Jitter may occur when the user presses a button on the stlyus
 762          * or the mouse. What we do to prevent that is wait 'x' milliseconds
 763          * following a 'jitterable' event, which should give the hand some time
 764          * stabilize itself.
 765          *
 766          * We just introduced aiptek->previousJitterable to carry forth the
 767          * notion that jitter occurs when the button state changes from on to off:
 768          * a person drawing, holding a button down is not subject to jittering.
 769          * With that in mind, changing from upper button depressed to lower button
 770          * WILL transition through a jitter delay.
 771          */
 772
 773         if (aiptek->previousJitterable != jitterable &&
 774             aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
 775                 aiptek->endDelay = jiffies +
 776                     ((aiptek->curSetting.jitterDelay * HZ) / 1000);
 777                 aiptek->inDelay = 1;
 778         }
 779         aiptek->previousJitterable = jitterable;
 780
 781 exit:
 782         retval = usb_submit_urb(urb, GFP_ATOMIC);
 783         if (retval != 0) {
 784                 err("%s - usb_submit_urb failed with result %d",
 785                     __FUNCTION__, retval);
 786         }
 787 }
 788
 789 /***********************************************************************
 790  * These are the USB id's known so far. We do not identify them to
 791  * specific Aiptek model numbers, because there has been overlaps,
 792  * use, and reuse of id's in existing models. Certain models have
 793  * been known to use more than one ID, indicative perhaps of
 794  * manufacturing revisions. In any event, we consider these
 795  * IDs to not be model-specific nor unique.
 796  */
 797 static const struct usb_device_id aiptek_ids[] = {
 798         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
 799         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
 800         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
 801         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
 802         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
 803         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
 804         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
 805         {}
 806 };
 807
 808 MODULE_DEVICE_TABLE(usb, aiptek_ids);
 809
 810 /***********************************************************************
 811  * Open an instance of the tablet driver.
 812  */
 813 static int aiptek_open(struct input_dev *inputdev)
 814 {
 815         struct aiptek *aiptek = inputdev->private;
 816
 817         if (aiptek->openCount++ > 0) {
 818                 return 0;
 819         }
 820
 821         aiptek->urb->dev = aiptek->usbdev;
 822         if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0) {
 823                 aiptek->openCount--;
 824                 return -EIO;
 825         }
 826
 827         return 0;
 828 }
 829
 830 /***********************************************************************
 831  * Close an instance of the tablet driver.
 832  */
 833 static void aiptek_close(struct input_dev *inputdev)
 834 {
 835         struct aiptek *aiptek = inputdev->private;
 836
 837         if (--aiptek->openCount == 0) {
 838                 usb_kill_urb(aiptek->urb);
 839         }
 840 }
 841
 842 /***********************************************************************
 843  * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
 844  * where they were known as usb_set_report and usb_get_report.
 845  */
 846 static int
 847 aiptek_set_report(struct aiptek *aiptek,
 848                   unsigned char report_type,
 849                   unsigned char report_id, void *buffer, int size)
 850 {
 851         return usb_control_msg(aiptek->usbdev,
 852                                usb_sndctrlpipe(aiptek->usbdev, 0),
 853                                USB_REQ_SET_REPORT,
 854                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 855                                USB_DIR_OUT, (report_type << 8) + report_id,
 856                                aiptek->ifnum, buffer, size, 5000);
 857 }
 858
 859 static int
 860 aiptek_get_report(struct aiptek *aiptek,
 861                   unsigned char report_type,
 862                   unsigned char report_id, void *buffer, int size)
 863 {
 864         return usb_control_msg(aiptek->usbdev,
 865                                usb_rcvctrlpipe(aiptek->usbdev, 0),
 866                                USB_REQ_GET_REPORT,
 867                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 868                                USB_DIR_IN, (report_type << 8) + report_id,
 869                                aiptek->ifnum, buffer, size, 5000);
 870 }
 871
 872 /***********************************************************************
 873  * Send a command to the tablet.
 874  */
 875 static int
 876 aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
 877 {
 878         const int sizeof_buf = 3 * sizeof(u8);
 879         int ret;
 880         u8 *buf;
 881
 882         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 883         if (!buf)
 884                 return -ENOMEM;
 885
 886         buf[0] = 2;
 887         buf[1] = command;
 888         buf[2] = data;
 889
 890         if ((ret =
 891              aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 892                 dbg("aiptek_program: failed, tried to send: 0x%02x 0x%02x",
 893                     command, data);
 894         }
 895         kfree(buf);
 896         return ret < 0 ? ret : 0;
 897 }
 898
 899 /***********************************************************************
 900  * Retrieve information from the tablet. Querying info is defined as first
 901  * sending the {command,data} sequence as a command, followed by a wait
 902  * (aka, "programmaticDelay") and then a "read" request.
 903  */
 904 static int
 905 aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
 906 {
 907         const int sizeof_buf = 3 * sizeof(u8);
 908         int ret;
 909         u8 *buf;
 910
 911         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 912         if (!buf)
 913                 return -ENOMEM;
 914
 915         buf[0] = 2;
 916         buf[1] = command;
 917         buf[2] = data;
 918
 919         if (aiptek_command(aiptek, command, data) != 0) {
 920                 kfree(buf);
 921                 return -EIO;
 922         }
 923         msleep(aiptek->curSetting.programmableDelay);
 924
 925         if ((ret =
 926              aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 927                 dbg("aiptek_query failed: returned 0x%02x 0x%02x 0x%02x",
 928                     buf[0], buf[1], buf[2]);
 929                 ret = -EIO;
 930         } else {
 931                 ret = le16_to_cpu(get_unaligned((__le16 *) (buf + 1)));
 932         }
 933         kfree(buf);
 934         return ret;
 935 }
 936
 937 /***********************************************************************
 938  * Program the tablet into either absolute or relative mode.
 939  * We also get information about the tablet's size.
 940  */
 941 static int aiptek_program_tablet(struct aiptek *aiptek)
 942 {
 943         int ret;
 944         /* Execute Resolution500LPI */
 945         if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
 946                 return ret;
 947
 948         /* Query getModelCode */
 949         if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
 950                 return ret;
 951         aiptek->features.modelCode = ret & 0xff;
 952
 953         /* Query getODMCode */
 954         if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
 955                 return ret;
 956         aiptek->features.odmCode = ret;
 957
 958         /* Query getFirmwareCode */
 959         if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
 960                 return ret;
 961         aiptek->features.firmwareCode = ret;
 962
 963         /* Query getXextension */
 964         if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
 965                 return ret;
 966         aiptek->inputdev.absmin[ABS_X] = 0;
 967         aiptek->inputdev.absmax[ABS_X] = ret - 1;
 968
 969         /* Query getYextension */
 970         if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
 971                 return ret;
 972         aiptek->inputdev.absmin[ABS_Y] = 0;
 973         aiptek->inputdev.absmax[ABS_Y] = ret - 1;
 974
 975         /* Query getPressureLevels */
 976         if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
 977                 return ret;
 978         aiptek->inputdev.absmin[ABS_PRESSURE] = 0;
 979         aiptek->inputdev.absmax[ABS_PRESSURE] = ret - 1;
 980
 981         /* Depending on whether we are in absolute or relative mode, we will
 982          * do a switchToTablet(absolute) or switchToMouse(relative) command.
 983          */
 984         if (aiptek->curSetting.coordinateMode ==
 985             AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 986                 /* Execute switchToTablet */
 987                 if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
 988                         return ret;
 989                 }
 990         } else {
 991                 /* Execute switchToMouse */
 992                 if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
 993                         return ret;
 994                 }
 995         }
 996
 997         /* Enable the macro keys */
 998         if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
 999                 return ret;
1000 #if 0
1001         /* Execute FilterOn */
1002         if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
1003                 return ret;
1004 #endif
1005
1006         /* Execute AutoGainOn */
1007         if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
1008                 return ret;
1009
1010         /* Reset the eventCount, so we track events from last (re)programming
1011          */
1012         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
1013         aiptek->eventCount = 0;
1014
1015         return 0;
1016 }
1017
1018 /***********************************************************************
1019  * Sysfs functions. Sysfs prefers that individually-tunable parameters
1020  * exist in their separate pseudo-files. Summary data that is immutable
1021  * may exist in a singular file so long as you don't define a writeable
1022  * interface.
1023  */
1024
1025 /***********************************************************************
1026  * support the 'size' file -- display support
1027  */
1028 static ssize_t show_tabletSize(struct device *dev, char *buf)
1029 {
1030         struct aiptek *aiptek = dev_get_drvdata(dev);
1031
1032         if (aiptek == NULL)
1033                 return 0;
1034
1035         return snprintf(buf, PAGE_SIZE, "%dx%d\n",
1036                         aiptek->inputdev.absmax[ABS_X] + 1,
1037                         aiptek->inputdev.absmax[ABS_Y] + 1);
1038 }
1039
1040 /* These structs define the sysfs files, param #1 is the name of the
1041  * file, param 2 is the file permissions, param 3 & 4 are to the
1042  * output generator and input parser routines. Absence of a routine is
1043  * permitted -- it only means can't either 'cat' the file, or send data
1044  * to it.
1045  */
1046 static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
1047
1048 /***********************************************************************
1049  * support routines for the 'product_id' file
1050  */
1051 static ssize_t show_tabletProductId(struct device *dev, char *buf)
1052 {
1053         struct aiptek *aiptek = dev_get_drvdata(dev);
1054
1055         if (aiptek == NULL)
1056                 return 0;
1057
1058         return snprintf(buf, PAGE_SIZE, "0x%04x\n",
1059                         aiptek->inputdev.id.product);
1060 }
1061
1062 static DEVICE_ATTR(product_id, S_IRUGO, show_tabletProductId, NULL);
1063
1064 /***********************************************************************
1065  * support routines for the 'vendor_id' file
1066  */
1067 static ssize_t show_tabletVendorId(struct device *dev, char *buf)
1068 {
1069         struct aiptek *aiptek = dev_get_drvdata(dev);
1070
1071         if (aiptek == NULL)
1072                 return 0;
1073
1074         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->inputdev.id.vendor);
1075 }
1076
1077 static DEVICE_ATTR(vendor_id, S_IRUGO, show_tabletVendorId, NULL);
1078
1079 /***********************************************************************
1080  * support routines for the 'vendor' file
1081  */
1082 static ssize_t show_tabletManufacturer(struct device *dev, char *buf)
1083 {
1084         struct aiptek *aiptek = dev_get_drvdata(dev);
1085         int retval;
1086
1087         if (aiptek == NULL)
1088                 return 0;
1089
1090         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->manufacturer);
1091         return retval;
1092 }
1093
1094 static DEVICE_ATTR(vendor, S_IRUGO, show_tabletManufacturer, NULL);
1095
1096 /***********************************************************************
1097  * support routines for the 'product' file
1098  */
1099 static ssize_t show_tabletProduct(struct device *dev, char *buf)
1100 {
1101         struct aiptek *aiptek = dev_get_drvdata(dev);
1102         int retval;
1103
1104         if (aiptek == NULL)
1105                 return 0;
1106
1107         retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->product);
1108         return retval;
1109 }
1110
1111 static DEVICE_ATTR(product, S_IRUGO, show_tabletProduct, NULL);
1112
1113 /***********************************************************************
1114  * support routines for the 'pointer_mode' file. Note that this file
1115  * both displays current setting and allows reprogramming.
1116  */
1117 static ssize_t show_tabletPointerMode(struct device *dev, char *buf)
1118 {
1119         struct aiptek *aiptek = dev_get_drvdata(dev);
1120         char *s;
1121
1122         if (aiptek == NULL)
1123                 return 0;
1124
1125         switch (aiptek->curSetting.pointerMode) {
1126         case AIPTEK_POINTER_ONLY_STYLUS_MODE:
1127                 s = "stylus";
1128                 break;
1129
1130         case AIPTEK_POINTER_ONLY_MOUSE_MODE:
1131                 s = "mouse";
1132                 break;
1133
1134         case AIPTEK_POINTER_EITHER_MODE:
1135                 s = "either";
1136                 break;
1137
1138         default:
1139                 s = "unknown";
1140                 break;
1141         }
1142         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1143 }
1144
1145 static ssize_t
1146 store_tabletPointerMode(struct device *dev, const char *buf, size_t count)
1147 {
1148         struct aiptek *aiptek = dev_get_drvdata(dev);
1149         if (aiptek == NULL)
1150                 return 0;
1151
1152         if (strcmp(buf, "stylus") == 0) {
1153                 aiptek->newSetting.pointerMode =
1154                     AIPTEK_POINTER_ONLY_STYLUS_MODE;
1155         } else if (strcmp(buf, "mouse") == 0) {
1156                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_ONLY_MOUSE_MODE;
1157         } else if (strcmp(buf, "either") == 0) {
1158                 aiptek->newSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
1159         }
1160         return count;
1161 }
1162
1163 static DEVICE_ATTR(pointer_mode,
1164                    S_IRUGO | S_IWUGO,
1165                    show_tabletPointerMode, store_tabletPointerMode);
1166
1167 /***********************************************************************
1168  * support routines for the 'coordinate_mode' file. Note that this file
1169  * both displays current setting and allows reprogramming.
1170  */
1171 static ssize_t show_tabletCoordinateMode(struct device *dev, char *buf)
1172 {
1173         struct aiptek *aiptek = dev_get_drvdata(dev);
1174         char *s;
1175
1176         if (aiptek == NULL)
1177                 return 0;
1178
1179         switch (aiptek->curSetting.coordinateMode) {
1180         case AIPTEK_COORDINATE_ABSOLUTE_MODE:
1181                 s = "absolute";
1182                 break;
1183
1184         case AIPTEK_COORDINATE_RELATIVE_MODE:
1185                 s = "relative";
1186                 break;
1187
1188         default:
1189                 s = "unknown";
1190                 break;
1191         }
1192         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1193 }
1194
1195 static ssize_t
1196 store_tabletCoordinateMode(struct device *dev, const char *buf, size_t count)
1197 {
1198         struct aiptek *aiptek = dev_get_drvdata(dev);
1199         if (aiptek == NULL)
1200                 return 0;
1201
1202         if (strcmp(buf, "absolute") == 0) {
1203                 aiptek->newSetting.pointerMode =
1204                     AIPTEK_COORDINATE_ABSOLUTE_MODE;
1205         } else if (strcmp(buf, "relative") == 0) {
1206                 aiptek->newSetting.pointerMode =
1207                     AIPTEK_COORDINATE_RELATIVE_MODE;
1208         }
1209         return count;
1210 }
1211
1212 static DEVICE_ATTR(coordinate_mode,
1213                    S_IRUGO | S_IWUGO,
1214                    show_tabletCoordinateMode, store_tabletCoordinateMode);
1215
1216 /***********************************************************************
1217  * support routines for the 'tool_mode' file. Note that this file
1218  * both displays current setting and allows reprogramming.
1219  */
1220 static ssize_t show_tabletToolMode(struct device *dev, char *buf)
1221 {
1222         struct aiptek *aiptek = dev_get_drvdata(dev);
1223         char *s;
1224
1225         if (aiptek == NULL)
1226                 return 0;
1227
1228         switch (TOOL_BUTTON(aiptek->curSetting.toolMode)) {
1229         case AIPTEK_TOOL_BUTTON_MOUSE_MODE:
1230                 s = "mouse";
1231                 break;
1232
1233         case AIPTEK_TOOL_BUTTON_ERASER_MODE:
1234                 s = "eraser";
1235                 break;
1236
1237         case AIPTEK_TOOL_BUTTON_PENCIL_MODE:
1238                 s = "pencil";
1239                 break;
1240
1241         case AIPTEK_TOOL_BUTTON_PEN_MODE:
1242                 s = "pen";
1243                 break;
1244
1245         case AIPTEK_TOOL_BUTTON_BRUSH_MODE:
1246                 s = "brush";
1247                 break;
1248
1249         case AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE:
1250                 s = "airbrush";
1251                 break;
1252
1253         case AIPTEK_TOOL_BUTTON_LENS_MODE:
1254                 s = "lens";
1255                 break;
1256
1257         default:
1258                 s = "unknown";
1259                 break;
1260         }
1261         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1262 }
1263
1264 static ssize_t
1265 store_tabletToolMode(struct device *dev, const char *buf, size_t count)
1266 {
1267         struct aiptek *aiptek = dev_get_drvdata(dev);
1268         if (aiptek == NULL)
1269                 return 0;
1270
1271         if (strcmp(buf, "mouse") == 0) {
1272                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_MOUSE_MODE;
1273         } else if (strcmp(buf, "eraser") == 0) {
1274                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_ERASER_MODE;
1275         } else if (strcmp(buf, "pencil") == 0) {
1276                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PENCIL_MODE;
1277         } else if (strcmp(buf, "pen") == 0) {
1278                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
1279         } else if (strcmp(buf, "brush") == 0) {
1280                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_BRUSH_MODE;
1281         } else if (strcmp(buf, "airbrush") == 0) {
1282                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE;
1283         } else if (strcmp(buf, "lens") == 0) {
1284                 aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_LENS_MODE;
1285         }
1286
1287         return count;
1288 }
1289
1290 static DEVICE_ATTR(tool_mode,
1291                    S_IRUGO | S_IWUGO,
1292                    show_tabletToolMode, store_tabletToolMode);
1293
1294 /***********************************************************************
1295  * support routines for the 'xtilt' file. Note that this file
1296  * both displays current setting and allows reprogramming.
1297  */
1298 static ssize_t show_tabletXtilt(struct device *dev, char *buf)
1299 {
1300         struct aiptek *aiptek = dev_get_drvdata(dev);
1301
1302         if (aiptek == NULL)
1303                 return 0;
1304
1305         if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
1306                 return snprintf(buf, PAGE_SIZE, "disable\n");
1307         } else {
1308                 return snprintf(buf, PAGE_SIZE, "%d\n",
1309                                 aiptek->curSetting.xTilt);
1310         }
1311 }
1312
1313 static ssize_t
1314 store_tabletXtilt(struct device *dev, const char *buf, size_t count)
1315 {
1316         struct aiptek *aiptek = dev_get_drvdata(dev);
1317         int x;
1318
1319         if (aiptek == NULL)
1320                 return 0;
1321
1322         if (strcmp(buf, "disable") == 0) {
1323                 aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
1324         } else {
1325                 x = (int)simple_strtol(buf, NULL, 10);
1326                 if (x >= AIPTEK_TILT_MIN && x <= AIPTEK_TILT_MAX) {
1327                         aiptek->newSetting.xTilt = x;
1328                 }
1329         }
1330         return count;
1331 }
1332
1333 static DEVICE_ATTR(xtilt,
1334                    S_IRUGO | S_IWUGO, show_tabletXtilt, store_tabletXtilt);
1335
1336 /***********************************************************************
1337  * support routines for the 'ytilt' file. Note that this file
1338  * both displays current setting and allows reprogramming.
1339  */
1340 static ssize_t show_tabletYtilt(struct device *dev, char *buf)
1341 {
1342         struct aiptek *aiptek = dev_get_drvdata(dev);
1343
1344         if (aiptek == NULL)
1345                 return 0;
1346
1347         if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
1348                 return snprintf(buf, PAGE_SIZE, "disable\n");
1349         } else {
1350                 return snprintf(buf, PAGE_SIZE, "%d\n",
1351                                 aiptek->curSetting.yTilt);
1352         }
1353 }
1354
1355 static ssize_t
1356 store_tabletYtilt(struct device *dev, const char *buf, size_t count)
1357 {
1358         struct aiptek *aiptek = dev_get_drvdata(dev);
1359         int y;
1360
1361         if (aiptek == NULL)
1362                 return 0;
1363
1364         if (strcmp(buf, "disable") == 0) {
1365                 aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
1366         } else {
1367                 y = (int)simple_strtol(buf, NULL, 10);
1368                 if (y >= AIPTEK_TILT_MIN && y <= AIPTEK_TILT_MAX) {
1369                         aiptek->newSetting.yTilt = y;
1370                 }
1371         }
1372         return count;
1373 }
1374
1375 static DEVICE_ATTR(ytilt,
1376                    S_IRUGO | S_IWUGO, show_tabletYtilt, store_tabletYtilt);
1377
1378 /***********************************************************************
1379  * support routines for the 'jitter' file. Note that this file
1380  * both displays current setting and allows reprogramming.
1381  */
1382 static ssize_t show_tabletJitterDelay(struct device *dev, char *buf)
1383 {
1384         struct aiptek *aiptek = dev_get_drvdata(dev);
1385
1386         if (aiptek == NULL)
1387                 return 0;
1388
1389         return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
1390 }
1391
1392 static ssize_t
1393 store_tabletJitterDelay(struct device *dev, const char *buf, size_t count)
1394 {
1395         struct aiptek *aiptek = dev_get_drvdata(dev);
1396
1397         if (aiptek == NULL)
1398                 return 0;
1399
1400         aiptek->newSetting.jitterDelay = (int)simple_strtol(buf, NULL, 10);
1401         return count;
1402 }
1403
1404 static DEVICE_ATTR(jitter,
1405                    S_IRUGO | S_IWUGO,
1406                    show_tabletJitterDelay, store_tabletJitterDelay);
1407
1408 /***********************************************************************
1409  * support routines for the 'delay' file. Note that this file
1410  * both displays current setting and allows reprogramming.
1411  */
1412 static ssize_t show_tabletProgrammableDelay(struct device *dev, char *buf)
1413 {
1414         struct aiptek *aiptek = dev_get_drvdata(dev);
1415
1416         if (aiptek == NULL)
1417                 return 0;
1418
1419         return snprintf(buf, PAGE_SIZE, "%d\n",
1420                         aiptek->curSetting.programmableDelay);
1421 }
1422
1423 static ssize_t
1424 store_tabletProgrammableDelay(struct device *dev, const char *buf, size_t count)
1425 {
1426         struct aiptek *aiptek = dev_get_drvdata(dev);
1427
1428         if (aiptek == NULL)
1429                 return 0;
1430
1431         aiptek->newSetting.programmableDelay = (int)simple_strtol(buf, NULL, 10);
1432         return count;
1433 }
1434
1435 static DEVICE_ATTR(delay,
1436                    S_IRUGO | S_IWUGO,
1437                    show_tabletProgrammableDelay, store_tabletProgrammableDelay);
1438
1439 /***********************************************************************
1440  * support routines for the 'input_path' file. Note that this file
1441  * only displays current setting.
1442  */
1443 static ssize_t show_tabletInputDevice(struct device *dev, char *buf)
1444 {
1445         struct aiptek *aiptek = dev_get_drvdata(dev);
1446
1447         if (aiptek == NULL)
1448                 return 0;
1449
1450         return snprintf(buf, PAGE_SIZE, "/dev/input/%s\n",
1451                         aiptek->features.inputPath);
1452 }
1453
1454 static DEVICE_ATTR(input_path, S_IRUGO, show_tabletInputDevice, NULL);
1455
1456 /***********************************************************************
1457  * support routines for the 'event_count' file. Note that this file
1458  * only displays current setting.
1459  */
1460 static ssize_t show_tabletEventsReceived(struct device *dev, char *buf)
1461 {
1462         struct aiptek *aiptek = dev_get_drvdata(dev);
1463
1464         if (aiptek == NULL)
1465                 return 0;
1466
1467         return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
1468 }
1469
1470 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
1471
1472 /***********************************************************************
1473  * support routines for the 'diagnostic' file. Note that this file
1474  * only displays current setting.
1475  */
1476 static ssize_t show_tabletDiagnosticMessage(struct device *dev, char *buf)
1477 {
1478         struct aiptek *aiptek = dev_get_drvdata(dev);
1479         char *retMsg;
1480
1481         if (aiptek == NULL)
1482                 return 0;
1483
1484         switch (aiptek->diagnostic) {
1485         case AIPTEK_DIAGNOSTIC_NA:
1486                 retMsg = "no errors\n";
1487                 break;
1488
1489         case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
1490                 retMsg = "Error: receiving relative reports\n";
1491                 break;
1492
1493         case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
1494                 retMsg = "Error: receiving absolute reports\n";
1495                 break;
1496
1497         case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
1498                 if (aiptek->curSetting.pointerMode ==
1499                     AIPTEK_POINTER_ONLY_MOUSE_MODE) {
1500                         retMsg = "Error: receiving stylus reports\n";
1501                 } else {
1502                         retMsg = "Error: receiving mouse reports\n";
1503                 }
1504                 break;
1505
1506         default:
1507                 return 0;
1508         }
1509         return snprintf(buf, PAGE_SIZE, retMsg);
1510 }
1511
1512 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
1513
1514 /***********************************************************************
1515  * support routines for the 'stylus_upper' file. Note that this file
1516  * both displays current setting and allows for setting changing.
1517  */
1518 static ssize_t show_tabletStylusUpper(struct device *dev, char *buf)
1519 {
1520         struct aiptek *aiptek = dev_get_drvdata(dev);
1521         char *s;
1522
1523         if (aiptek == NULL)
1524                 return 0;
1525
1526         switch (aiptek->curSetting.stylusButtonUpper) {
1527         case AIPTEK_STYLUS_UPPER_BUTTON:
1528                 s = "upper";
1529                 break;
1530
1531         case AIPTEK_STYLUS_LOWER_BUTTON:
1532                 s = "lower";
1533                 break;
1534
1535         default:
1536                 s = "unknown";
1537                 break;
1538         }
1539         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1540 }
1541
1542 static ssize_t
1543 store_tabletStylusUpper(struct device *dev, const char *buf, size_t count)
1544 {
1545         struct aiptek *aiptek = dev_get_drvdata(dev);
1546
1547         if (aiptek == NULL)
1548                 return 0;
1549
1550         if (strcmp(buf, "upper") == 0) {
1551                 aiptek->newSetting.stylusButtonUpper =
1552                     AIPTEK_STYLUS_UPPER_BUTTON;
1553         } else if (strcmp(buf, "lower") == 0) {
1554                 aiptek->newSetting.stylusButtonUpper =
1555                     AIPTEK_STYLUS_LOWER_BUTTON;
1556         }
1557         return count;
1558 }
1559
1560 static DEVICE_ATTR(stylus_upper,
1561                    S_IRUGO | S_IWUGO,
1562                    show_tabletStylusUpper, store_tabletStylusUpper);
1563
1564 /***********************************************************************
1565  * support routines for the 'stylus_lower' file. Note that this file
1566  * both displays current setting and allows for setting changing.
1567  */
1568 static ssize_t show_tabletStylusLower(struct device *dev, char *buf)
1569 {
1570         struct aiptek *aiptek = dev_get_drvdata(dev);
1571         char *s;
1572
1573         if (aiptek == NULL)
1574                 return 0;
1575
1576         switch (aiptek->curSetting.stylusButtonLower) {
1577         case AIPTEK_STYLUS_UPPER_BUTTON:
1578                 s = "upper";
1579                 break;
1580
1581         case AIPTEK_STYLUS_LOWER_BUTTON:
1582                 s = "lower";
1583                 break;
1584
1585         default:
1586                 s = "unknown";
1587                 break;
1588         }
1589         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1590 }
1591
1592 static ssize_t
1593 store_tabletStylusLower(struct device *dev, const char *buf, size_t count)
1594 {
1595         struct aiptek *aiptek = dev_get_drvdata(dev);
1596
1597         if (aiptek == NULL)
1598                 return 0;
1599
1600         if (strcmp(buf, "upper") == 0) {
1601                 aiptek->newSetting.stylusButtonLower =
1602                     AIPTEK_STYLUS_UPPER_BUTTON;
1603         } else if (strcmp(buf, "lower") == 0) {
1604                 aiptek->newSetting.stylusButtonLower =
1605                     AIPTEK_STYLUS_LOWER_BUTTON;
1606         }
1607         return count;
1608 }
1609
1610 static DEVICE_ATTR(stylus_lower,
1611                    S_IRUGO | S_IWUGO,
1612                    show_tabletStylusLower, store_tabletStylusLower);
1613
1614 /***********************************************************************
1615  * support routines for the 'mouse_left' file. Note that this file
1616  * both displays current setting and allows for setting changing.
1617  */
1618 static ssize_t show_tabletMouseLeft(struct device *dev, char *buf)
1619 {
1620         struct aiptek *aiptek = dev_get_drvdata(dev);
1621         char *s;
1622
1623         if (aiptek == NULL)
1624                 return 0;
1625
1626         switch (aiptek->curSetting.mouseButtonLeft) {
1627         case AIPTEK_MOUSE_LEFT_BUTTON:
1628                 s = "left";
1629                 break;
1630
1631         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1632                 s = "middle";
1633                 break;
1634
1635         case AIPTEK_MOUSE_RIGHT_BUTTON:
1636                 s = "right";
1637                 break;
1638
1639         default:
1640                 s = "unknown";
1641                 break;
1642         }
1643         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1644 }
1645
1646 static ssize_t
1647 store_tabletMouseLeft(struct device *dev, const char *buf, size_t count)
1648 {
1649         struct aiptek *aiptek = dev_get_drvdata(dev);
1650
1651         if (aiptek == NULL)
1652                 return 0;
1653
1654         if (strcmp(buf, "left") == 0) {
1655                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
1656         } else if (strcmp(buf, "middle") == 0) {
1657                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_MIDDLE_BUTTON;
1658         } else if (strcmp(buf, "right") == 0) {
1659                 aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_RIGHT_BUTTON;
1660         }
1661         return count;
1662 }
1663
1664 static DEVICE_ATTR(mouse_left,
1665                    S_IRUGO | S_IWUGO,
1666                    show_tabletMouseLeft, store_tabletMouseLeft);
1667
1668 /***********************************************************************
1669  * support routines for the 'mouse_middle' file. Note that this file
1670  * both displays current setting and allows for setting changing.
1671  */
1672 static ssize_t show_tabletMouseMiddle(struct device *dev, char *buf)
1673 {
1674         struct aiptek *aiptek = dev_get_drvdata(dev);
1675         char *s;
1676
1677         if (aiptek == NULL)
1678                 return 0;
1679
1680         switch (aiptek->curSetting.mouseButtonMiddle) {
1681         case AIPTEK_MOUSE_LEFT_BUTTON:
1682                 s = "left";
1683                 break;
1684
1685         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1686                 s = "middle";
1687                 break;
1688
1689         case AIPTEK_MOUSE_RIGHT_BUTTON:
1690                 s = "right";
1691                 break;
1692
1693         default:
1694                 s = "unknown";
1695                 break;
1696         }
1697         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1698 }
1699
1700 static ssize_t
1701 store_tabletMouseMiddle(struct device *dev, const char *buf, size_t count)
1702 {
1703         struct aiptek *aiptek = dev_get_drvdata(dev);
1704
1705         if (aiptek == NULL)
1706                 return 0;
1707
1708         if (strcmp(buf, "left") == 0) {
1709                 aiptek->newSetting.mouseButtonMiddle = AIPTEK_MOUSE_LEFT_BUTTON;
1710         } else if (strcmp(buf, "middle") == 0) {
1711                 aiptek->newSetting.mouseButtonMiddle =
1712                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1713         } else if (strcmp(buf, "right") == 0) {
1714                 aiptek->newSetting.mouseButtonMiddle =
1715                     AIPTEK_MOUSE_RIGHT_BUTTON;
1716         }
1717         return count;
1718 }
1719
1720 static DEVICE_ATTR(mouse_middle,
1721                    S_IRUGO | S_IWUGO,
1722                    show_tabletMouseMiddle, store_tabletMouseMiddle);
1723
1724 /***********************************************************************
1725  * support routines for the 'mouse_right' file. Note that this file
1726  * both displays current setting and allows for setting changing.
1727  */
1728 static ssize_t show_tabletMouseRight(struct device *dev, char *buf)
1729 {
1730         struct aiptek *aiptek = dev_get_drvdata(dev);
1731         char *s;
1732
1733         if (aiptek == NULL)
1734                 return 0;
1735
1736         switch (aiptek->curSetting.mouseButtonRight) {
1737         case AIPTEK_MOUSE_LEFT_BUTTON:
1738                 s = "left";
1739                 break;
1740
1741         case AIPTEK_MOUSE_MIDDLE_BUTTON:
1742                 s = "middle";
1743                 break;
1744
1745         case AIPTEK_MOUSE_RIGHT_BUTTON:
1746                 s = "right";
1747                 break;
1748
1749         default:
1750                 s = "unknown";
1751                 break;
1752         }
1753         return snprintf(buf, PAGE_SIZE, "%s\n", s);
1754 }
1755
1756 static ssize_t
1757 store_tabletMouseRight(struct device *dev, const char *buf, size_t count)
1758 {
1759         struct aiptek *aiptek = dev_get_drvdata(dev);
1760
1761         if (aiptek == NULL)
1762                 return 0;
1763
1764         if (strcmp(buf, "left") == 0) {
1765                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_LEFT_BUTTON;
1766         } else if (strcmp(buf, "middle") == 0) {
1767                 aiptek->newSetting.mouseButtonRight =
1768                     AIPTEK_MOUSE_MIDDLE_BUTTON;
1769         } else if (strcmp(buf, "right") == 0) {
1770                 aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
1771         }
1772         return count;
1773 }
1774
1775 static DEVICE_ATTR(mouse_right,
1776                    S_IRUGO | S_IWUGO,
1777                    show_tabletMouseRight, store_tabletMouseRight);
1778
1779 /***********************************************************************
1780  * support routines for the 'wheel' file. Note that this file
1781  * both displays current setting and allows for setting changing.
1782  */
1783 static ssize_t show_tabletWheel(struct device *dev, char *buf)
1784 {
1785         struct aiptek *aiptek = dev_get_drvdata(dev);
1786
1787         if (aiptek == NULL)
1788                 return 0;
1789
1790         if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
1791                 return snprintf(buf, PAGE_SIZE, "disable\n");
1792         } else {
1793                 return snprintf(buf, PAGE_SIZE, "%d\n",
1794                                 aiptek->curSetting.wheel);
1795         }
1796 }
1797
1798 static ssize_t
1799 store_tabletWheel(struct device *dev, const char *buf, size_t count)
1800 {
1801         struct aiptek *aiptek = dev_get_drvdata(dev);
1802
1803         if (aiptek == NULL)
1804                 return 0;
1805
1806         aiptek->newSetting.wheel = (int)simple_strtol(buf, NULL, 10);
1807         return count;
1808 }
1809
1810 static DEVICE_ATTR(wheel,
1811                    S_IRUGO | S_IWUGO, show_tabletWheel, store_tabletWheel);
1812
1813 /***********************************************************************
1814  * support routines for the 'execute' file. Note that this file
1815  * both displays current setting and allows for setting changing.
1816  */
1817 static ssize_t show_tabletExecute(struct device *dev, char *buf)
1818 {
1819         struct aiptek *aiptek = dev_get_drvdata(dev);
1820
1821         if (aiptek == NULL)
1822                 return 0;
1823
1824         /* There is nothing useful to display, so a one-line manual
1825          * is in order...
1826          */
1827         return snprintf(buf, PAGE_SIZE,
1828                         "Write anything to this file to program your tablet.\n");
1829 }
1830
1831 static ssize_t
1832 store_tabletExecute(struct device *dev, const char *buf, size_t count)
1833 {
1834         struct aiptek *aiptek = dev_get_drvdata(dev);
1835
1836         if (aiptek == NULL)
1837                 return 0;
1838
1839         /* We do not care what you write to this file. Merely the action
1840          * of writing to this file triggers a tablet reprogramming.
1841          */
1842         memcpy(&aiptek->curSetting, &aiptek->newSetting,
1843                sizeof(struct aiptek_settings));
1844
1845         if (aiptek_program_tablet(aiptek) < 0)
1846                 return -EIO;
1847
1848         return count;
1849 }
1850
1851 static DEVICE_ATTR(execute,
1852                    S_IRUGO | S_IWUGO, show_tabletExecute, store_tabletExecute);
1853
1854 /***********************************************************************
1855  * support routines for the 'odm_code' file. Note that this file
1856  * only displays current setting.
1857  */
1858 static ssize_t show_tabletODMCode(struct device *dev, char *buf)
1859 {
1860         struct aiptek *aiptek = dev_get_drvdata(dev);
1861
1862         if (aiptek == NULL)
1863                 return 0;
1864
1865         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
1866 }
1867
1868 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
1869
1870 /***********************************************************************
1871  * support routines for the 'model_code' file. Note that this file
1872  * only displays current setting.
1873  */
1874 static ssize_t show_tabletModelCode(struct device *dev, char *buf)
1875 {
1876         struct aiptek *aiptek = dev_get_drvdata(dev);
1877
1878         if (aiptek == NULL)
1879                 return 0;
1880
1881         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
1882 }
1883
1884 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
1885
1886 /***********************************************************************
1887  * support routines for the 'firmware_code' file. Note that this file
1888  * only displays current setting.
1889  */
1890 static ssize_t show_firmwareCode(struct device *dev, char *buf)
1891 {
1892         struct aiptek *aiptek = dev_get_drvdata(dev);
1893
1894         if (aiptek == NULL)
1895                 return 0;
1896
1897         return snprintf(buf, PAGE_SIZE, "%04x\n",
1898                         aiptek->features.firmwareCode);
1899 }
1900
1901 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
1902
1903 /***********************************************************************
1904  * This routine removes all existing sysfs files managed by this device
1905  * driver.
1906  */
1907 static void aiptek_delete_files(struct device *dev)
1908 {
1909         device_remove_file(dev, &dev_attr_size);
1910         device_remove_file(dev, &dev_attr_product_id);
1911         device_remove_file(dev, &dev_attr_vendor_id);
1912         device_remove_file(dev, &dev_attr_vendor);
1913         device_remove_file(dev, &dev_attr_product);
1914         device_remove_file(dev, &dev_attr_pointer_mode);
1915         device_remove_file(dev, &dev_attr_coordinate_mode);
1916         device_remove_file(dev, &dev_attr_tool_mode);
1917         device_remove_file(dev, &dev_attr_xtilt);
1918         device_remove_file(dev, &dev_attr_ytilt);
1919         device_remove_file(dev, &dev_attr_jitter);
1920         device_remove_file(dev, &dev_attr_delay);
1921         device_remove_file(dev, &dev_attr_input_path);
1922         device_remove_file(dev, &dev_attr_event_count);
1923         device_remove_file(dev, &dev_attr_diagnostic);
1924         device_remove_file(dev, &dev_attr_odm_code);
1925         device_remove_file(dev, &dev_attr_model_code);
1926         device_remove_file(dev, &dev_attr_firmware_code);
1927         device_remove_file(dev, &dev_attr_stylus_lower);
1928         device_remove_file(dev, &dev_attr_stylus_upper);
1929         device_remove_file(dev, &dev_attr_mouse_left);
1930         device_remove_file(dev, &dev_attr_mouse_middle);
1931         device_remove_file(dev, &dev_attr_mouse_right);
1932         device_remove_file(dev, &dev_attr_wheel);
1933         device_remove_file(dev, &dev_attr_execute);
1934 }
1935
1936 /***********************************************************************
1937  * This routine creates the sysfs files managed by this device
1938  * driver.
1939  */
1940 static int aiptek_add_files(struct device *dev)
1941 {
1942         int ret;
1943
1944         if ((ret = device_create_file(dev, &dev_attr_size)) ||
1945             (ret = device_create_file(dev, &dev_attr_product_id)) ||
1946             (ret = device_create_file(dev, &dev_attr_vendor_id)) ||
1947             (ret = device_create_file(dev, &dev_attr_vendor)) ||
1948             (ret = device_create_file(dev, &dev_attr_product)) ||
1949             (ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
1950             (ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
1951             (ret = device_create_file(dev, &dev_attr_tool_mode)) ||
1952             (ret = device_create_file(dev, &dev_attr_xtilt)) ||
1953             (ret = device_create_file(dev, &dev_attr_ytilt)) ||
1954             (ret = device_create_file(dev, &dev_attr_jitter)) ||
1955             (ret = device_create_file(dev, &dev_attr_delay)) ||
1956             (ret = device_create_file(dev, &dev_attr_input_path)) ||
1957             (ret = device_create_file(dev, &dev_attr_event_count)) ||
1958             (ret = device_create_file(dev, &dev_attr_diagnostic)) ||
1959             (ret = device_create_file(dev, &dev_attr_odm_code)) ||
1960             (ret = device_create_file(dev, &dev_attr_model_code)) ||
1961             (ret = device_create_file(dev, &dev_attr_firmware_code)) ||
1962             (ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
1963             (ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
1964             (ret = device_create_file(dev, &dev_attr_mouse_left)) ||
1965             (ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
1966             (ret = device_create_file(dev, &dev_attr_mouse_right)) ||
1967             (ret = device_create_file(dev, &dev_attr_wheel)) ||
1968             (ret = device_create_file(dev, &dev_attr_execute))) {
1969                 err("aiptek: killing own sysfs device files\n");
1970                 aiptek_delete_files(dev);
1971         }
1972         return ret;
1973 }
1974
1975 /***********************************************************************
1976  * This routine is called when a tablet has been identified. It basically
1977  * sets up the tablet and the driver's internal structures.
1978  */
1979 static int
1980 aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
1981 {
1982         struct usb_device *usbdev = interface_to_usbdev(intf);
1983         struct usb_endpoint_descriptor *endpoint;
1984         struct aiptek *aiptek;
1985         struct input_dev *inputdev;
1986         struct input_handle *inputhandle;
1987         struct list_head *node, *next;
1988         char path[64 + 1];
1989         int i;
1990         int speeds[] = { 0,
1991                 AIPTEK_PROGRAMMABLE_DELAY_50,
1992                 AIPTEK_PROGRAMMABLE_DELAY_400,
1993                 AIPTEK_PROGRAMMABLE_DELAY_25,
1994                 AIPTEK_PROGRAMMABLE_DELAY_100,
1995                 AIPTEK_PROGRAMMABLE_DELAY_200,
1996                 AIPTEK_PROGRAMMABLE_DELAY_300
1997         };
1998
1999         /* programmableDelay is where the command-line specified
2000          * delay is kept. We make it the first element of speeds[],
2001          * so therefore, your override speed is tried first, then the
2002          * remainder. Note that the default value of 400ms will be tried
2003          * if you do not specify any command line parameter.
2004          */
2005         speeds[0] = programmableDelay;
2006
2007         if ((aiptek = kmalloc(sizeof(struct aiptek), GFP_KERNEL)) == NULL)
2008                 return -ENOMEM;
2009         memset(aiptek, 0, sizeof(struct aiptek));
2010
2011         aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
2012                                         SLAB_ATOMIC, &aiptek->data_dma);
2013         if (aiptek->data == NULL) {
2014                 kfree(aiptek);
2015                 return -ENOMEM;
2016         }
2017
2018         aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
2019         if (aiptek->urb == NULL) {
2020                 usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
2021                                 aiptek->data_dma);
2022                 kfree(aiptek);
2023                 return -ENOMEM;
2024         }
2025
2026         /* Set up the curSettings struct. Said struct contains the current
2027          * programmable parameters. The newSetting struct contains changes
2028          * the user makes to the settings via the sysfs interface. Those
2029          * changes are not "committed" to curSettings until the user
2030          * writes to the sysfs/.../execute file.
2031          */
2032         aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
2033         aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
2034         aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
2035         aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
2036         aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
2037         aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
2038         aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
2039         aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
2040         aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
2041         aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
2042         aiptek->curSetting.jitterDelay = jitterDelay;
2043         aiptek->curSetting.programmableDelay = programmableDelay;
2044
2045         /* Both structs should have equivalent settings
2046          */
2047         memcpy(&aiptek->newSetting, &aiptek->curSetting,
2048                sizeof(struct aiptek_settings));
2049
2050         /* Now program the capacities of the tablet, in terms of being
2051          * an input device.
2052          */
2053         aiptek->inputdev.evbit[0] |= BIT(EV_KEY)
2054             | BIT(EV_ABS)
2055             | BIT(EV_REL)
2056             | BIT(EV_MSC);
2057
2058         aiptek->inputdev.absbit[0] |=
2059             (BIT(ABS_X) |
2060              BIT(ABS_Y) |
2061              BIT(ABS_PRESSURE) |
2062              BIT(ABS_TILT_X) |
2063              BIT(ABS_TILT_Y) | BIT(ABS_WHEEL) | BIT(ABS_MISC));
2064
2065         aiptek->inputdev.relbit[0] |=
2066             (BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL) | BIT(REL_MISC));
2067
2068         aiptek->inputdev.keybit[LONG(BTN_LEFT)] |=
2069             (BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE));
2070
2071         aiptek->inputdev.keybit[LONG(BTN_DIGI)] |=
2072             (BIT(BTN_TOOL_PEN) |
2073              BIT(BTN_TOOL_RUBBER) |
2074              BIT(BTN_TOOL_PENCIL) |
2075              BIT(BTN_TOOL_AIRBRUSH) |
2076              BIT(BTN_TOOL_BRUSH) |
2077              BIT(BTN_TOOL_MOUSE) |
2078              BIT(BTN_TOOL_LENS) |
2079              BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2));
2080
2081         aiptek->inputdev.mscbit[0] = BIT(MSC_SERIAL);
2082
2083         /* Programming the tablet macro keys needs to be done with a for loop
2084          * as the keycodes are discontiguous.
2085          */
2086         for (i = 0; i < sizeof(macroKeyEvents) / sizeof(macroKeyEvents[0]); ++i)
2087                 set_bit(macroKeyEvents[i], aiptek->inputdev.keybit);
2088
2089         /* Set up client data, pointers to open and close routines
2090          * for the input device.
2091          */
2092         aiptek->inputdev.private = aiptek;
2093         aiptek->inputdev.open = aiptek_open;
2094         aiptek->inputdev.close = aiptek_close;
2095
2096         /* Determine the usb devices' physical path.
2097          * Asketh not why we always pretend we're using "../input0",
2098          * but I suspect this will have to be refactored one
2099          * day if a single USB device can be a keyboard & a mouse
2100          * & a tablet, and the inputX number actually will tell
2101          * us something...
2102          */
2103         if (usb_make_path(usbdev, path, 64) > 0)
2104                 sprintf(aiptek->features.usbPath, "%s/input0", path);
2105
2106         /* Program the input device coordinate capacities. We do not yet
2107          * know what maximum X, Y, and Z values are, so we're putting fake
2108          * values in. Later, we'll ask the tablet to put in the correct
2109          * values.
2110          */
2111         aiptek->inputdev.absmin[ABS_X] = 0;
2112         aiptek->inputdev.absmax[ABS_X] = 2999;
2113         aiptek->inputdev.absmin[ABS_Y] = 0;
2114         aiptek->inputdev.absmax[ABS_Y] = 2249;
2115         aiptek->inputdev.absmin[ABS_PRESSURE] = 0;
2116         aiptek->inputdev.absmax[ABS_PRESSURE] = 511;
2117         aiptek->inputdev.absmin[ABS_TILT_X] = AIPTEK_TILT_MIN;
2118         aiptek->inputdev.absmax[ABS_TILT_X] = AIPTEK_TILT_MAX;
2119         aiptek->inputdev.absmin[ABS_TILT_Y] = AIPTEK_TILT_MIN;
2120         aiptek->inputdev.absmax[ABS_TILT_Y] = AIPTEK_TILT_MAX;
2121         aiptek->inputdev.absmin[ABS_WHEEL] = AIPTEK_WHEEL_MIN;
2122         aiptek->inputdev.absmax[ABS_WHEEL] = AIPTEK_WHEEL_MAX - 1;
2123         aiptek->inputdev.absfuzz[ABS_X] = 0;
2124         aiptek->inputdev.absfuzz[ABS_Y] = 0;
2125         aiptek->inputdev.absfuzz[ABS_PRESSURE] = 0;
2126         aiptek->inputdev.absfuzz[ABS_TILT_X] = 0;
2127         aiptek->inputdev.absfuzz[ABS_TILT_Y] = 0;
2128         aiptek->inputdev.absfuzz[ABS_WHEEL] = 0;
2129         aiptek->inputdev.absflat[ABS_X] = 0;
2130         aiptek->inputdev.absflat[ABS_Y] = 0;
2131         aiptek->inputdev.absflat[ABS_PRESSURE] = 0;
2132         aiptek->inputdev.absflat[ABS_TILT_X] = 0;
2133         aiptek->inputdev.absflat[ABS_TILT_Y] = 0;
2134         aiptek->inputdev.absflat[ABS_WHEEL] = 0;
2135         aiptek->inputdev.name = "Aiptek";
2136         aiptek->inputdev.phys = aiptek->features.usbPath;
2137         aiptek->inputdev.id.bustype = BUS_USB;
2138         aiptek->inputdev.id.vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2139         aiptek->inputdev.id.product = le16_to_cpu(usbdev->descriptor.idProduct);
2140         aiptek->inputdev.id.version = le16_to_cpu(usbdev->descriptor.bcdDevice);
2141
2142         aiptek->usbdev = usbdev;
2143         aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
2144         aiptek->inDelay = 0;
2145         aiptek->endDelay = 0;
2146         aiptek->previousJitterable = 0;
2147
2148         endpoint = &intf->altsetting[0].endpoint[0].desc;
2149
2150         /* Go set up our URB, which is called when the tablet receives
2151          * input.
2152          */
2153         usb_fill_int_urb(aiptek->urb,
2154                          aiptek->usbdev,
2155                          usb_rcvintpipe(aiptek->usbdev,
2156                                         endpoint->bEndpointAddress),
2157                          aiptek->data, 8, aiptek_irq, aiptek,
2158                          endpoint->bInterval);
2159
2160         aiptek->urb->transfer_dma = aiptek->data_dma;
2161         aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2162
2163         /* Register the tablet as an Input Device
2164          */
2165         input_register_device(&aiptek->inputdev);
2166
2167         /* We now will look for the evdev device which is mapped to
2168          * the tablet. The partial name is kept in the link list of
2169          * input_handles associated with this input device.
2170          * What identifies an evdev input_handler is that it begins
2171          * with 'event', continues with a digit, and that in turn
2172          * is mapped to /{devfs}/input/eventN.
2173          */
2174         inputdev = &aiptek->inputdev;
2175         list_for_each_safe(node, next, &inputdev->h_list) {
2176                 inputhandle = to_handle(node);
2177                 if (strncmp(inputhandle->name, "event", 5) == 0) {
2178                         strcpy(aiptek->features.inputPath, inputhandle->name);
2179                         break;
2180                 }
2181         }
2182
2183         info("input: Aiptek on %s (%s)\n", path, aiptek->features.inputPath);
2184
2185         /* Program the tablet. This sets the tablet up in the mode
2186          * specified in newSetting, and also queries the tablet's
2187          * physical capacities.
2188          *
2189          * Sanity check: if a tablet doesn't like the slow programmatic
2190          * delay, we often get sizes of 0x0. Let's use that as an indicator
2191          * to try faster delays, up to 25 ms. If that logic fails, well, you'll
2192          * have to explain to us how your tablet thinks it's 0x0, and yet that's
2193          * not an error :-)
2194          */
2195
2196         for (i = 0; i < sizeof(speeds) / sizeof(speeds[0]); ++i) {
2197                 aiptek->curSetting.programmableDelay = speeds[i];
2198                 (void)aiptek_program_tablet(aiptek);
2199                 if (aiptek->inputdev.absmax[ABS_X] > 0) {
2200                         info("input: Aiptek using %d ms programming speed\n",
2201                              aiptek->curSetting.programmableDelay);
2202                         break;
2203                 }
2204         }
2205
2206         /* Associate this driver's struct with the usb interface.
2207          */
2208         usb_set_intfdata(intf, aiptek);
2209
2210         /* Set up the sysfs files
2211          */
2212         aiptek_add_files(&intf->dev);
2213
2214         /* Make sure the evdev module is loaded. Assuming evdev IS a module :-)
2215          */
2216         if (request_module("evdev") != 0)
2217                 info("aiptek: error loading 'evdev' module");
2218
2219         return 0;
2220 }
2221
2222 /* Forward declaration */
2223 static void aiptek_disconnect(struct usb_interface *intf);
2224
2225 static struct usb_driver aiptek_driver = {
2226         .owner = THIS_MODULE,
2227         .name = "aiptek",
2228         .probe = aiptek_probe,
2229         .disconnect = aiptek_disconnect,
2230         .id_table = aiptek_ids,
2231 };
2232
2233 /***********************************************************************
2234  * Deal with tablet disconnecting from the system.
2235  */
2236 static void aiptek_disconnect(struct usb_interface *intf)
2237 {
2238         struct aiptek *aiptek = usb_get_intfdata(intf);
2239
2240         /* Disassociate driver's struct with usb interface
2241          */
2242         usb_set_intfdata(intf, NULL);
2243         if (aiptek != NULL) {
2244                 /* Free & unhook everything from the system.
2245                  */
2246                 usb_kill_urb(aiptek->urb);
2247                 input_unregister_device(&aiptek->inputdev);
2248                 aiptek_delete_files(&intf->dev);
2249                 usb_free_urb(aiptek->urb);
2250                 usb_buffer_free(interface_to_usbdev(intf),
2251                                 AIPTEK_PACKET_LENGTH,
2252                                 aiptek->data, aiptek->data_dma);
2253                 kfree(aiptek);
2254                 aiptek = NULL;
2255         }
2256 }
2257
2258 static int __init aiptek_init(void)
2259 {
2260         int result = usb_register(&aiptek_driver);
2261         if (result == 0) {
2262                 info(DRIVER_VERSION ": " DRIVER_AUTHOR);
2263                 info(DRIVER_DESC);
2264         }
2265         return result;
2266 }
2267
2268 static void __exit aiptek_exit(void)
2269 {
2270         usb_deregister(&aiptek_driver);
2271 }
2272
2273 MODULE_AUTHOR(DRIVER_AUTHOR);
2274 MODULE_DESCRIPTION(DRIVER_DESC);
2275 MODULE_LICENSE("GPL");
2276
2277 module_param(programmableDelay, int, 0);
2278 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
2279 module_param(jitterDelay, int, 0);
2280 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
2281
2282 module_init(aiptek_init);
2283 module_exit(aiptek_exit);