root/drivers/input/tablet/aiptek.c

DEFINITIONS

1. map_str_to_val
2. map_val_to_str
3. aiptek_irq
4. aiptek_open
5. aiptek_close
6. aiptek_set_report
7. aiptek_get_report
8. aiptek_command
9. aiptek_query
10. aiptek_program_tablet
11. show_tabletSize
12. show_tabletPointerMode
13. store_tabletPointerMode
14. show_tabletCoordinateMode
15. store_tabletCoordinateMode
16. show_tabletToolMode
17. store_tabletToolMode
18. show_tabletXtilt
19. store_tabletXtilt
20. show_tabletYtilt
21. store_tabletYtilt
22. show_tabletJitterDelay
23. store_tabletJitterDelay
24. show_tabletProgrammableDelay
25. store_tabletProgrammableDelay
26. show_tabletEventsReceived
27. show_tabletDiagnosticMessage
28. show_tabletStylusUpper
29. store_tabletStylusUpper
30. show_tabletStylusLower
31. store_tabletStylusLower
32. show_tabletMouseLeft
33. store_tabletMouseLeft
34. show_tabletMouseMiddle
35. store_tabletMouseMiddle
36. show_tabletMouseRight
37. store_tabletMouseRight
38. show_tabletWheel
39. store_tabletWheel
40. show_tabletExecute
41. store_tabletExecute
42. show_tabletODMCode
43. show_tabletModelCode
44. show_firmwareCode
45. aiptek_probe
46. aiptek_disconnect

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Native support for the Aiptek HyperPen USB Tablets
   4  *  (4000U/5000U/6000U/8000U/12000U)
   5  *
   6  *  Copyright (c) 2001      Chris Atenasio   <chris@crud.net>
   7  *  Copyright (c) 2002-2004 Bryan W. Headley <bwheadley@earthlink.net>
   8  *
   9  *  based on wacom.c by
  10  *     Vojtech Pavlik      <vojtech@suse.cz>
  11  *     Andreas Bach Aaen   <abach@stofanet.dk>
  12  *     Clifford Wolf       <clifford@clifford.at>
  13  *     Sam Mosel           <sam.mosel@computer.org>
  14  *     James E. Blair      <corvus@gnu.org>
  15  *     Daniel Egger        <egger@suse.de>
  16  *
  17  *  Many thanks to Oliver Kuechemann for his support.
  18  *
  19  *  ChangeLog:
  20  *      v0.1 - Initial release
  21  *      v0.2 - Hack to get around fake event 28's. (Bryan W. Headley)
  22  *      v0.3 - Make URB dynamic (Bryan W. Headley, Jun-8-2002)
  23  *             Released to Linux 2.4.19 and 2.5.x
  24  *      v0.4 - Rewrote substantial portions of the code to deal with
  25  *             corrected control sequences, timing, dynamic configuration,
  26  *             support of 6000U - 12000U, procfs, and macro key support
  27  *             (Jan-1-2003 - Feb-5-2003, Bryan W. Headley)
  28  *      v1.0 - Added support for diagnostic messages, count of messages
  29  *             received from URB - Mar-8-2003, Bryan W. Headley
  30  *      v1.1 - added support for tablet resolution, changed DV and proximity
  31  *             some corrections - Jun-22-2003, martin schneebacher
  32  *           - Added support for the sysfs interface, deprecating the
  33  *             procfs interface for 2.5.x kernel. Also added support for
  34  *             Wheel command. Bryan W. Headley July-15-2003.
  35  *      v1.2 - Reworked jitter timer as a kernel thread.
  36  *             Bryan W. Headley November-28-2003/Jan-10-2004.
  37  *      v1.3 - Repaired issue of kernel thread going nuts on single-processor
  38  *             machines, introduced programmableDelay as a command line
  39  *             parameter. Feb 7 2004, Bryan W. Headley.
  40  *      v1.4 - Re-wire jitter so it does not require a thread. Courtesy of
  41  *             Rene van Paassen. Added reporting of physical pointer device
  42  *             (e.g., stylus, mouse in reports 2, 3, 4, 5. We don't know
  43  *             for reports 1, 6.)
  44  *             what physical device reports for reports 1, 6.) Also enabled
  45  *             MOUSE and LENS tool button modes. Renamed "rubber" to "eraser".
  46  *             Feb 20, 2004, Bryan W. Headley.
  47  *      v1.5 - Added previousJitterable, so we don't do jitter delay when the
  48  *             user is holding a button down for periods of time.
  49  *
  50  * NOTE:
  51  *      This kernel driver is augmented by the "Aiptek" XFree86 input
  52  *      driver for your X server, as well as the Gaiptek GUI Front-end
  53  *      "Tablet Manager".
  54  *      These three products are highly interactive with one another,
  55  *      so therefore it's easier to document them all as one subsystem.
  56  *      Please visit the project's "home page", located at,
  57  *      http://aiptektablet.sourceforge.net.
  58  */
  59 
  60 #include <linux/jiffies.h>
  61 #include <linux/kernel.h>
  62 #include <linux/slab.h>
  63 #include <linux/module.h>
  64 #include <linux/usb/input.h>
  65 #include <linux/uaccess.h>
  66 #include <asm/unaligned.h>
  67 
  68 /*
  69  * Aiptek status packet:
  70  *
  71  * (returned as Report 1 - relative coordinates from mouse and stylus)
  72  *
  73  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
  74  * byte0   0     0     0     0     0     0     0     1
  75  * byte1   0     0     0     0     0    BS2   BS    Tip
  76  * byte2  X7    X6    X5    X4    X3    X2    X1    X0
  77  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
  78  *
  79  * (returned as Report 2 - absolute coordinates from the stylus)
  80  *
  81  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
  82  * byte0   0     0     0     0     0     0     1     0
  83  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
  84  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
  85  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
  86  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
  87  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
  88  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
  89  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
  90  *
  91  * (returned as Report 3 - absolute coordinates from the mouse)
  92  *
  93  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
  94  * byte0   0     0     0     0     0     0     1     1
  95  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
  96  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
  97  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
  98  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
  99  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 100  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 101  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 102  *
 103  * (returned as Report 4 - macrokeys from the stylus)
 104  *
 105  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 106  * byte0   0     0     0     0     0     1     0     0
 107  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 108  * byte2   0     0     0     0     0     0     1     0
 109  * byte3   0     0     0    K4    K3    K2    K1    K0
 110  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 111  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 112  *
 113  * (returned as Report 5 - macrokeys from the mouse)
 114  *
 115  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 116  * byte0   0     0     0     0     0     1     0     1
 117  * byte1   0     0     0    BS2   BS    Tip   IR    DV
 118  * byte2   0     0     0     0     0     0     1     0
 119  * byte3   0     0     0    K4    K3    K2    K1    K0
 120  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 121  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 122  *
 123  * IR: In Range = Proximity on
 124  * DV = Data Valid
 125  * BS = Barrel Switch (as in, macro keys)
 126  * BS2 also referred to as Tablet Pick
 127  *
 128  * Command Summary:
 129  *
 130  * Use report_type CONTROL (3)
 131  * Use report_id   2
 132  *
 133  * Command/Data    Description     Return Bytes    Return Value
 134  * 0x10/0x00       SwitchToMouse       0
 135  * 0x10/0x01       SwitchToTablet      0
 136  * 0x18/0x04       SetResolution       0
 137  * 0x12/0xFF       AutoGainOn          0
 138  * 0x17/0x00       FilterOn            0
 139  * 0x01/0x00       GetXExtension       2           MaxX
 140  * 0x01/0x01       GetYExtension       2           MaxY
 141  * 0x02/0x00       GetModelCode        2           ModelCode = LOBYTE
 142  * 0x03/0x00       GetODMCode          2           ODMCode
 143  * 0x08/0x00       GetPressureLevels   2           =512
 144  * 0x04/0x00       GetFirmwareVersion  2           Firmware Version
 145  * 0x11/0x02       EnableMacroKeys     0
 146  *
 147  * To initialize the tablet:
 148  *
 149  * (1) Send Resolution500LPI (Command)
 150  * (2) Query for Model code (Option Report)
 151  * (3) Query for ODM code (Option Report)
 152  * (4) Query for firmware (Option Report)
 153  * (5) Query for GetXExtension (Option Report)
 154  * (6) Query for GetYExtension (Option Report)
 155  * (7) Query for GetPressureLevels (Option Report)
 156  * (8) SwitchToTablet for Absolute coordinates, or
 157  *     SwitchToMouse for Relative coordinates (Command)
 158  * (9) EnableMacroKeys (Command)
 159  * (10) FilterOn (Command)
 160  * (11) AutoGainOn (Command)
 161  *
 162  * (Step 9 can be omitted, but you'll then have no function keys.)
 163  */
 164 
 165 #define USB_VENDOR_ID_AIPTEK                            0x08ca
 166 #define USB_VENDOR_ID_KYE                               0x0458
 167 #define USB_REQ_GET_REPORT                              0x01
 168 #define USB_REQ_SET_REPORT                              0x09
 169 
 170         /* PointerMode codes
 171          */
 172 #define AIPTEK_POINTER_ONLY_MOUSE_MODE                  0
 173 #define AIPTEK_POINTER_ONLY_STYLUS_MODE                 1
 174 #define AIPTEK_POINTER_EITHER_MODE                      2
 175 
 176 #define AIPTEK_POINTER_ALLOW_MOUSE_MODE(a)              \
 177         (a == AIPTEK_POINTER_ONLY_MOUSE_MODE ||         \
 178          a == AIPTEK_POINTER_EITHER_MODE)
 179 #define AIPTEK_POINTER_ALLOW_STYLUS_MODE(a)             \
 180         (a == AIPTEK_POINTER_ONLY_STYLUS_MODE ||        \
 181          a == AIPTEK_POINTER_EITHER_MODE)
 182 
 183         /* CoordinateMode code
 184          */
 185 #define AIPTEK_COORDINATE_RELATIVE_MODE                 0
 186 #define AIPTEK_COORDINATE_ABSOLUTE_MODE                 1
 187 
 188        /* XTilt and YTilt values
 189         */
 190 #define AIPTEK_TILT_MIN                                 (-128)
 191 #define AIPTEK_TILT_MAX                                 127
 192 #define AIPTEK_TILT_DISABLE                             (-10101)
 193 
 194         /* Wheel values
 195          */
 196 #define AIPTEK_WHEEL_MIN                                0
 197 #define AIPTEK_WHEEL_MAX                                1024
 198 #define AIPTEK_WHEEL_DISABLE                            (-10101)
 199 
 200         /* ToolCode values, which BTW are 0x140 .. 0x14f
 201          * We have things set up such that if the tool button has changed,
 202          * the tools get reset.
 203          */
 204         /* toolMode codes
 205          */
 206 #define AIPTEK_TOOL_BUTTON_PEN_MODE                     BTN_TOOL_PEN
 207 #define AIPTEK_TOOL_BUTTON_PENCIL_MODE                  BTN_TOOL_PENCIL
 208 #define AIPTEK_TOOL_BUTTON_BRUSH_MODE                   BTN_TOOL_BRUSH
 209 #define AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE                BTN_TOOL_AIRBRUSH
 210 #define AIPTEK_TOOL_BUTTON_ERASER_MODE                  BTN_TOOL_RUBBER
 211 #define AIPTEK_TOOL_BUTTON_MOUSE_MODE                   BTN_TOOL_MOUSE
 212 #define AIPTEK_TOOL_BUTTON_LENS_MODE                    BTN_TOOL_LENS
 213 
 214         /* Diagnostic message codes
 215          */
 216 #define AIPTEK_DIAGNOSTIC_NA                            0
 217 #define AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE  1
 218 #define AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE  2
 219 #define AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED               3
 220 
 221         /* Time to wait (in ms) to help mask hand jittering
 222          * when pressing the stylus buttons.
 223          */
 224 #define AIPTEK_JITTER_DELAY_DEFAULT                     50
 225 
 226         /* Time to wait (in ms) in-between sending the tablet
 227          * a command and beginning the process of reading the return
 228          * sequence from the tablet.
 229          */
 230 #define AIPTEK_PROGRAMMABLE_DELAY_25            25
 231 #define AIPTEK_PROGRAMMABLE_DELAY_50            50
 232 #define AIPTEK_PROGRAMMABLE_DELAY_100           100
 233 #define AIPTEK_PROGRAMMABLE_DELAY_200           200
 234 #define AIPTEK_PROGRAMMABLE_DELAY_300           300
 235 #define AIPTEK_PROGRAMMABLE_DELAY_400           400
 236 #define AIPTEK_PROGRAMMABLE_DELAY_DEFAULT       AIPTEK_PROGRAMMABLE_DELAY_400
 237 
 238         /* Mouse button programming
 239          */
 240 #define AIPTEK_MOUSE_LEFT_BUTTON                0x04
 241 #define AIPTEK_MOUSE_RIGHT_BUTTON               0x08
 242 #define AIPTEK_MOUSE_MIDDLE_BUTTON              0x10
 243 
 244         /* Stylus button programming
 245          */
 246 #define AIPTEK_STYLUS_LOWER_BUTTON              0x08
 247 #define AIPTEK_STYLUS_UPPER_BUTTON              0x10
 248 
 249         /* Length of incoming packet from the tablet
 250          */
 251 #define AIPTEK_PACKET_LENGTH                    8
 252 
 253         /* We report in EV_MISC both the proximity and
 254          * whether the report came from the stylus, tablet mouse
 255          * or "unknown" -- Unknown when the tablet is in relative
 256          * mode, because we only get report 1's.
 257          */
 258 #define AIPTEK_REPORT_TOOL_UNKNOWN              0x10
 259 #define AIPTEK_REPORT_TOOL_STYLUS               0x20
 260 #define AIPTEK_REPORT_TOOL_MOUSE                0x40
 261 
 262 static int programmableDelay = AIPTEK_PROGRAMMABLE_DELAY_DEFAULT;
 263 static int jitterDelay = AIPTEK_JITTER_DELAY_DEFAULT;
 264 
 265 struct aiptek_features {
 266         int odmCode;            /* Tablet manufacturer code       */
 267         int modelCode;          /* Tablet model code (not unique) */
 268         int firmwareCode;       /* prom/eeprom version            */
 269         char usbPath[64 + 1];   /* device's physical usb path     */
 270 };
 271 
 272 struct aiptek_settings {
 273         int pointerMode;        /* stylus-, mouse-only or either */
 274         int coordinateMode;     /* absolute/relative coords      */
 275         int toolMode;           /* pen, pencil, brush, etc. tool */
 276         int xTilt;              /* synthetic xTilt amount        */
 277         int yTilt;              /* synthetic yTilt amount        */
 278         int wheel;              /* synthetic wheel amount        */
 279         int stylusButtonUpper;  /* stylus upper btn delivers...  */
 280         int stylusButtonLower;  /* stylus lower btn delivers...  */
 281         int mouseButtonLeft;    /* mouse left btn delivers...    */
 282         int mouseButtonMiddle;  /* mouse middle btn delivers...  */
 283         int mouseButtonRight;   /* mouse right btn delivers...   */
 284         int programmableDelay;  /* delay for tablet programming  */
 285         int jitterDelay;        /* delay for hand jittering      */
 286 };
 287 
 288 struct aiptek {
 289         struct input_dev *inputdev;             /* input device struct           */
 290         struct usb_interface *intf;             /* usb interface struct          */
 291         struct urb *urb;                        /* urb for incoming reports      */
 292         dma_addr_t data_dma;                    /* our dma stuffage              */
 293         struct aiptek_features features;        /* tablet's array of features    */
 294         struct aiptek_settings curSetting;      /* tablet's current programmable */
 295         struct aiptek_settings newSetting;      /* ... and new param settings    */
 296         unsigned int ifnum;                     /* interface number for IO       */
 297         int diagnostic;                         /* tablet diagnostic codes       */
 298         unsigned long eventCount;               /* event count                   */
 299         int inDelay;                            /* jitter: in jitter delay?      */
 300         unsigned long endDelay;                 /* jitter: time when delay ends  */
 301         int previousJitterable;                 /* jitterable prev value     */
 302 
 303         int lastMacro;                          /* macro key to reset            */
 304         int previousToolMode;                   /* pen, pencil, brush, etc. tool */
 305         unsigned char *data;                    /* incoming packet data          */
 306 };
 307 
 308 static const int eventTypes[] = {
 309         EV_KEY, EV_ABS, EV_REL, EV_MSC,
 310 };
 311 
 312 static const int absEvents[] = {
 313         ABS_X, ABS_Y, ABS_PRESSURE, ABS_TILT_X, ABS_TILT_Y,
 314         ABS_WHEEL, ABS_MISC,
 315 };
 316 
 317 static const int relEvents[] = {
 318         REL_X, REL_Y, REL_WHEEL,
 319 };
 320 
 321 static const int buttonEvents[] = {
 322         BTN_LEFT, BTN_RIGHT, BTN_MIDDLE,
 323         BTN_TOOL_PEN, BTN_TOOL_RUBBER, BTN_TOOL_PENCIL, BTN_TOOL_AIRBRUSH,
 324         BTN_TOOL_BRUSH, BTN_TOOL_MOUSE, BTN_TOOL_LENS, BTN_TOUCH,
 325         BTN_STYLUS, BTN_STYLUS2,
 326 };
 327 
 328 /*
 329  * Permit easy lookup of keyboard events to send, versus
 330  * the bitmap which comes from the tablet. This hides the
 331  * issue that the F_keys are not sequentially numbered.
 332  */
 333 static const int macroKeyEvents[] = {
 334         KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
 335         KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
 336         KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
 337         KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
 338         KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
 339         KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
 340 };
 341 
 342 /***********************************************************************
 343  * Map values to strings and back. Every map should have the following
 344  * as its last element: { NULL, AIPTEK_INVALID_VALUE }.
 345  */
 346 #define AIPTEK_INVALID_VALUE    -1
 347 
 348 struct aiptek_map {
 349         const char *string;
 350         int value;
 351 };
 352 
 353 static int map_str_to_val(const struct aiptek_map *map, const char *str, size_t count)
 354 {
 355         const struct aiptek_map *p;
 356 
 357         if (str[count - 1] == '\n')
 358                 count--;
 359 
 360         for (p = map; p->string; p++)
 361                 if (!strncmp(str, p->string, count))
 362                         return p->value;
 363 
 364         return AIPTEK_INVALID_VALUE;
 365 }
 366 
 367 static const char *map_val_to_str(const struct aiptek_map *map, int val)
 368 {
 369         const struct aiptek_map *p;
 370 
 371         for (p = map; p->value != AIPTEK_INVALID_VALUE; p++)
 372                 if (val == p->value)
 373                         return p->string;
 374 
 375         return "unknown";
 376 }
 377 
 378 /***********************************************************************
 379  * aiptek_irq can receive one of six potential reports.
 380  * The documentation for each is in the body of the function.
 381  *
 382  * The tablet reports on several attributes per invocation of
 383  * aiptek_irq. Because the Linux Input Event system allows the
 384  * transmission of ONE attribute per input_report_xxx() call,
 385  * collation has to be done on the other end to reconstitute
 386  * a complete tablet report. Further, the number of Input Event reports
 387  * submitted varies, depending on what USB report type, and circumstance.
 388  * To deal with this, EV_MSC is used to indicate an 'end-of-report'
 389  * message. This has been an undocumented convention understood by the kernel
 390  * tablet driver and clients such as gpm and XFree86's tablet drivers.
 391  *
 392  * Of the information received from the tablet, the one piece I
 393  * cannot transmit is the proximity bit (without resorting to an EV_MSC
 394  * convention above.) I therefore have taken over REL_MISC and ABS_MISC
 395  * (for relative and absolute reports, respectively) for communicating
 396  * Proximity. Why two events? I thought it interesting to know if the
 397  * Proximity event occurred while the tablet was in absolute or relative
 398  * mode.
 399  * Update: REL_MISC proved not to be such a good idea. With REL_MISC you
 400  * get an event transmitted each time. ABS_MISC works better, since it
 401  * can be set and re-set. Thus, only using ABS_MISC from now on.
 402  *
 403  * Other tablets use the notion of a certain minimum stylus pressure
 404  * to infer proximity. While that could have been done, that is yet
 405  * another 'by convention' behavior, the documentation for which
 406  * would be spread between two (or more) pieces of software.
 407  *
 408  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
 409  * replaced with the input_sync() method (which emits EV_SYN.)
 410  */
 411 
 412 static void aiptek_irq(struct urb *urb)
 413 {
 414         struct aiptek *aiptek = urb->context;
 415         unsigned char *data = aiptek->data;
 416         struct input_dev *inputdev = aiptek->inputdev;
 417         struct usb_interface *intf = aiptek->intf;
 418         int jitterable = 0;
 419         int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
 420 
 421         switch (urb->status) {
 422         case 0:
 423                 /* Success */
 424                 break;
 425 
 426         case -ECONNRESET:
 427         case -ENOENT:
 428         case -ESHUTDOWN:
 429                 /* This urb is terminated, clean up */
 430                 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
 431                         __func__, urb->status);
 432                 return;
 433 
 434         default:
 435                 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
 436                         __func__, urb->status);
 437                 goto exit;
 438         }
 439 
 440         /* See if we are in a delay loop -- throw out report if true.
 441          */
 442         if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
 443                 goto exit;
 444         }
 445 
 446         aiptek->inDelay = 0;
 447         aiptek->eventCount++;
 448 
 449         /* Report 1 delivers relative coordinates with either a stylus
 450          * or the mouse. You do not know, however, which input
 451          * tool generated the event.
 452          */
 453         if (data[0] == 1) {
 454                 if (aiptek->curSetting.coordinateMode ==
 455                     AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 456                         aiptek->diagnostic =
 457                             AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
 458                 } else {
 459                         x = (signed char) data[2];
 460                         y = (signed char) data[3];
 461 
 462                         /* jitterable keeps track of whether any button has been pressed.
 463                          * We're also using it to remap the physical mouse button mask
 464                          * to pseudo-settings. (We don't specifically care about it's
 465                          * value after moving/transposing mouse button bitmasks, except
 466                          * that a non-zero value indicates that one or more
 467                          * mouse button was pressed.)
 468                          */
 469                         jitterable = data[1] & 0x07;
 470 
 471                         left = (data[1] & aiptek->curSetting.mouseButtonLeft >> 2) != 0 ? 1 : 0;
 472                         right = (data[1] & aiptek->curSetting.mouseButtonRight >> 2) != 0 ? 1 : 0;
 473                         middle = (data[1] & aiptek->curSetting.mouseButtonMiddle >> 2) != 0 ? 1 : 0;
 474 
 475                         input_report_key(inputdev, BTN_LEFT, left);
 476                         input_report_key(inputdev, BTN_MIDDLE, middle);
 477                         input_report_key(inputdev, BTN_RIGHT, right);
 478 
 479                         input_report_abs(inputdev, ABS_MISC,
 480                                          1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 481                         input_report_rel(inputdev, REL_X, x);
 482                         input_report_rel(inputdev, REL_Y, y);
 483 
 484                         /* Wheel support is in the form of a single-event
 485                          * firing.
 486                          */
 487                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 488                                 input_report_rel(inputdev, REL_WHEEL,
 489                                                  aiptek->curSetting.wheel);
 490                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 491                         }
 492                         if (aiptek->lastMacro != -1) {
 493                                 input_report_key(inputdev,
 494                                                  macroKeyEvents[aiptek->lastMacro], 0);
 495                                 aiptek->lastMacro = -1;
 496                         }
 497                         input_sync(inputdev);
 498                 }
 499         }
 500         /* Report 2 is delivered only by the stylus, and delivers
 501          * absolute coordinates.
 502          */
 503         else if (data[0] == 2) {
 504                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 505                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 506                 } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
 507                             (aiptek->curSetting.pointerMode)) {
 508                                 aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 509                 } else {
 510                         x = get_unaligned_le16(data + 1);
 511                         y = get_unaligned_le16(data + 3);
 512                         z = get_unaligned_le16(data + 6);
 513 
 514                         dv = (data[5] & 0x01) != 0 ? 1 : 0;
 515                         p = (data[5] & 0x02) != 0 ? 1 : 0;
 516                         tip = (data[5] & 0x04) != 0 ? 1 : 0;
 517 
 518                         /* Use jitterable to re-arrange button masks
 519                          */
 520                         jitterable = data[5] & 0x18;
 521 
 522                         bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 523                         pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 524 
 525                         /* dv indicates 'data valid' (e.g., the tablet is in sync
 526                          * and has delivered a "correct" report) We will ignore
 527                          * all 'bad' reports...
 528                          */
 529                         if (dv != 0) {
 530                                 /* If the selected tool changed, reset the old
 531                                  * tool key, and set the new one.
 532                                  */
 533                                 if (aiptek->previousToolMode !=
 534                                     aiptek->curSetting.toolMode) {
 535                                         input_report_key(inputdev,
 536                                                          aiptek->previousToolMode, 0);
 537                                         input_report_key(inputdev,
 538                                                          aiptek->curSetting.toolMode,
 539                                                          1);
 540                                         aiptek->previousToolMode =
 541                                                   aiptek->curSetting.toolMode;
 542                                 }
 543 
 544                                 if (p != 0) {
 545                                         input_report_abs(inputdev, ABS_X, x);
 546                                         input_report_abs(inputdev, ABS_Y, y);
 547                                         input_report_abs(inputdev, ABS_PRESSURE, z);
 548 
 549                                         input_report_key(inputdev, BTN_TOUCH, tip);
 550                                         input_report_key(inputdev, BTN_STYLUS, bs);
 551                                         input_report_key(inputdev, BTN_STYLUS2, pck);
 552 
 553                                         if (aiptek->curSetting.xTilt !=
 554                                             AIPTEK_TILT_DISABLE) {
 555                                                 input_report_abs(inputdev,
 556                                                                  ABS_TILT_X,
 557                                                                  aiptek->curSetting.xTilt);
 558                                         }
 559                                         if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
 560                                                 input_report_abs(inputdev,
 561                                                                  ABS_TILT_Y,
 562                                                                  aiptek->curSetting.yTilt);
 563                                         }
 564 
 565                                         /* Wheel support is in the form of a single-event
 566                                          * firing.
 567                                          */
 568                                         if (aiptek->curSetting.wheel !=
 569                                             AIPTEK_WHEEL_DISABLE) {
 570                                                 input_report_abs(inputdev,
 571                                                                  ABS_WHEEL,
 572                                                                  aiptek->curSetting.wheel);
 573                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 574                                         }
 575                                 }
 576                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
 577                                 if (aiptek->lastMacro != -1) {
 578                                         input_report_key(inputdev,
 579                                                          macroKeyEvents[aiptek->lastMacro], 0);
 580                                         aiptek->lastMacro = -1;
 581                                 }
 582                                 input_sync(inputdev);
 583                         }
 584                 }
 585         }
 586         /* Report 3's come from the mouse in absolute mode.
 587          */
 588         else if (data[0] == 3) {
 589                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
 590                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
 591                 } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
 592                         (aiptek->curSetting.pointerMode)) {
 593                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
 594                 } else {
 595                         x = get_unaligned_le16(data + 1);
 596                         y = get_unaligned_le16(data + 3);
 597 
 598                         jitterable = data[5] & 0x1c;
 599 
 600                         dv = (data[5] & 0x01) != 0 ? 1 : 0;
 601                         p = (data[5] & 0x02) != 0 ? 1 : 0;
 602                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 603                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 604                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 605 
 606                         if (dv != 0) {
 607                                 /* If the selected tool changed, reset the old
 608                                  * tool key, and set the new one.
 609                                  */
 610                                 if (aiptek->previousToolMode !=
 611                                     aiptek->curSetting.toolMode) {
 612                                         input_report_key(inputdev,
 613                                                          aiptek->previousToolMode, 0);
 614                                         input_report_key(inputdev,
 615                                                          aiptek->curSetting.toolMode,
 616                                                          1);
 617                                         aiptek->previousToolMode =
 618                                                   aiptek->curSetting.toolMode;
 619                                 }
 620 
 621                                 if (p != 0) {
 622                                         input_report_abs(inputdev, ABS_X, x);
 623                                         input_report_abs(inputdev, ABS_Y, y);
 624 
 625                                         input_report_key(inputdev, BTN_LEFT, left);
 626                                         input_report_key(inputdev, BTN_MIDDLE, middle);
 627                                         input_report_key(inputdev, BTN_RIGHT, right);
 628 
 629                                         /* Wheel support is in the form of a single-event
 630                                          * firing.
 631                                          */
 632                                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
 633                                                 input_report_abs(inputdev,
 634                                                                  ABS_WHEEL,
 635                                                                  aiptek->curSetting.wheel);
 636                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
 637                                         }
 638                                 }
 639                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
 640                                 if (aiptek->lastMacro != -1) {
 641                                         input_report_key(inputdev,
 642                                                          macroKeyEvents[aiptek->lastMacro], 0);
 643                                         aiptek->lastMacro = -1;
 644                                 }
 645                                 input_sync(inputdev);
 646                         }
 647                 }
 648         }
 649         /* Report 4s come from the macro keys when pressed by stylus
 650          */
 651         else if (data[0] == 4) {
 652                 jitterable = data[1] & 0x18;
 653 
 654                 dv = (data[1] & 0x01) != 0 ? 1 : 0;
 655                 p = (data[1] & 0x02) != 0 ? 1 : 0;
 656                 tip = (data[1] & 0x04) != 0 ? 1 : 0;
 657                 bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
 658                 pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
 659 
 660                 macro = dv && p && tip && !(data[3] & 1) ? (data[3] >> 1) : -1;
 661                 z = get_unaligned_le16(data + 4);
 662 
 663                 if (dv) {
 664                         /* If the selected tool changed, reset the old
 665                          * tool key, and set the new one.
 666                          */
 667                         if (aiptek->previousToolMode !=
 668                             aiptek->curSetting.toolMode) {
 669                                 input_report_key(inputdev,
 670                                                  aiptek->previousToolMode, 0);
 671                                 input_report_key(inputdev,
 672                                                  aiptek->curSetting.toolMode,
 673                                                  1);
 674                                 aiptek->previousToolMode =
 675                                         aiptek->curSetting.toolMode;
 676                         }
 677                 }
 678 
 679                 if (aiptek->lastMacro != -1 && aiptek->lastMacro != macro) {
 680                         input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0);
 681                         aiptek->lastMacro = -1;
 682                 }
 683 
 684                 if (macro != -1 && macro != aiptek->lastMacro) {
 685                         input_report_key(inputdev, macroKeyEvents[macro], 1);
 686                         aiptek->lastMacro = macro;
 687                 }
 688                 input_report_abs(inputdev, ABS_MISC,
 689                                  p | AIPTEK_REPORT_TOOL_STYLUS);
 690                 input_sync(inputdev);
 691         }
 692         /* Report 5s come from the macro keys when pressed by mouse
 693          */
 694         else if (data[0] == 5) {
 695                 jitterable = data[1] & 0x1c;
 696 
 697                 dv = (data[1] & 0x01) != 0 ? 1 : 0;
 698                 p = (data[1] & 0x02) != 0 ? 1 : 0;
 699                 left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
 700                 right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
 701                 middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
 702                 macro = dv && p && left && !(data[3] & 1) ? (data[3] >> 1) : 0;
 703 
 704                 if (dv) {
 705                         /* If the selected tool changed, reset the old
 706                          * tool key, and set the new one.
 707                          */
 708                         if (aiptek->previousToolMode !=
 709                             aiptek->curSetting.toolMode) {
 710                                 input_report_key(inputdev,
 711                                                  aiptek->previousToolMode, 0);
 712                                 input_report_key(inputdev,
 713                                                  aiptek->curSetting.toolMode, 1);
 714                                 aiptek->previousToolMode = aiptek->curSetting.toolMode;
 715                         }
 716                 }
 717 
 718                 if (aiptek->lastMacro != -1 && aiptek->lastMacro != macro) {
 719                         input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0);
 720                         aiptek->lastMacro = -1;
 721                 }
 722 
 723                 if (macro != -1 && macro != aiptek->lastMacro) {
 724                         input_report_key(inputdev, macroKeyEvents[macro], 1);
 725                         aiptek->lastMacro = macro;
 726                 }
 727 
 728                 input_report_abs(inputdev, ABS_MISC,
 729                                  p | AIPTEK_REPORT_TOOL_MOUSE);
 730                 input_sync(inputdev);
 731         }
 732         /* We have no idea which tool can generate a report 6. Theoretically,
 733          * neither need to, having been given reports 4 & 5 for such use.
 734          * However, report 6 is the 'official-looking' report for macroKeys;
 735          * reports 4 & 5 supposively are used to support unnamed, unknown
 736          * hat switches (which just so happen to be the macroKeys.)
 737          */
 738         else if (data[0] == 6) {
 739                 macro = get_unaligned_le16(data + 1);
 740                 if (macro > 0) {
 741                         input_report_key(inputdev, macroKeyEvents[macro - 1],
 742                                          0);
 743                 }
 744                 if (macro < 25) {
 745                         input_report_key(inputdev, macroKeyEvents[macro + 1],
 746                                          0);
 747                 }
 748 
 749                 /* If the selected tool changed, reset the old
 750                    tool key, and set the new one.
 751                 */
 752                 if (aiptek->previousToolMode !=
 753                     aiptek->curSetting.toolMode) {
 754                         input_report_key(inputdev,
 755                                          aiptek->previousToolMode, 0);
 756                         input_report_key(inputdev,
 757                                          aiptek->curSetting.toolMode,
 758                                          1);
 759                         aiptek->previousToolMode =
 760                                 aiptek->curSetting.toolMode;
 761                 }
 762 
 763                 input_report_key(inputdev, macroKeyEvents[macro], 1);
 764                 input_report_abs(inputdev, ABS_MISC,
 765                                  1 | AIPTEK_REPORT_TOOL_UNKNOWN);
 766                 input_sync(inputdev);
 767         } else {
 768                 dev_dbg(&intf->dev, "Unknown report %d\n", data[0]);
 769         }
 770 
 771         /* Jitter may occur when the user presses a button on the stlyus
 772          * or the mouse. What we do to prevent that is wait 'x' milliseconds
 773          * following a 'jitterable' event, which should give the hand some time
 774          * stabilize itself.
 775          *
 776          * We just introduced aiptek->previousJitterable to carry forth the
 777          * notion that jitter occurs when the button state changes from on to off:
 778          * a person drawing, holding a button down is not subject to jittering.
 779          * With that in mind, changing from upper button depressed to lower button
 780          * WILL transition through a jitter delay.
 781          */
 782 
 783         if (aiptek->previousJitterable != jitterable &&
 784             aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
 785                 aiptek->endDelay = jiffies +
 786                     ((aiptek->curSetting.jitterDelay * HZ) / 1000);
 787                 aiptek->inDelay = 1;
 788         }
 789         aiptek->previousJitterable = jitterable;
 790 
 791 exit:
 792         retval = usb_submit_urb(urb, GFP_ATOMIC);
 793         if (retval != 0) {
 794                 dev_err(&intf->dev,
 795                         "%s - usb_submit_urb failed with result %d\n",
 796                         __func__, retval);
 797         }
 798 }
 799 
 800 /***********************************************************************
 801  * These are the USB id's known so far. We do not identify them to
 802  * specific Aiptek model numbers, because there has been overlaps,
 803  * use, and reuse of id's in existing models. Certain models have
 804  * been known to use more than one ID, indicative perhaps of
 805  * manufacturing revisions. In any event, we consider these
 806  * IDs to not be model-specific nor unique.
 807  */
 808 static const struct usb_device_id aiptek_ids[] = {
 809         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
 810         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
 811         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
 812         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
 813         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
 814         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
 815         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
 816         {USB_DEVICE(USB_VENDOR_ID_KYE, 0x5003)},
 817         {}
 818 };
 819 
 820 MODULE_DEVICE_TABLE(usb, aiptek_ids);
 821 
 822 /***********************************************************************
 823  * Open an instance of the tablet driver.
 824  */
 825 static int aiptek_open(struct input_dev *inputdev)
 826 {
 827         struct aiptek *aiptek = input_get_drvdata(inputdev);
 828 
 829         aiptek->urb->dev = interface_to_usbdev(aiptek->intf);
 830         if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0)
 831                 return -EIO;
 832 
 833         return 0;
 834 }
 835 
 836 /***********************************************************************
 837  * Close an instance of the tablet driver.
 838  */
 839 static void aiptek_close(struct input_dev *inputdev)
 840 {
 841         struct aiptek *aiptek = input_get_drvdata(inputdev);
 842 
 843         usb_kill_urb(aiptek->urb);
 844 }
 845 
 846 /***********************************************************************
 847  * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
 848  * where they were known as usb_set_report and usb_get_report.
 849  */
 850 static int
 851 aiptek_set_report(struct aiptek *aiptek,
 852                   unsigned char report_type,
 853                   unsigned char report_id, void *buffer, int size)
 854 {
 855         struct usb_device *udev = interface_to_usbdev(aiptek->intf);
 856 
 857         return usb_control_msg(udev,
 858                                usb_sndctrlpipe(udev, 0),
 859                                USB_REQ_SET_REPORT,
 860                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 861                                USB_DIR_OUT, (report_type << 8) + report_id,
 862                                aiptek->ifnum, buffer, size, 5000);
 863 }
 864 
 865 static int
 866 aiptek_get_report(struct aiptek *aiptek,
 867                   unsigned char report_type,
 868                   unsigned char report_id, void *buffer, int size)
 869 {
 870         struct usb_device *udev = interface_to_usbdev(aiptek->intf);
 871 
 872         return usb_control_msg(udev,
 873                                usb_rcvctrlpipe(udev, 0),
 874                                USB_REQ_GET_REPORT,
 875                                USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 876                                USB_DIR_IN, (report_type << 8) + report_id,
 877                                aiptek->ifnum, buffer, size, 5000);
 878 }
 879 
 880 /***********************************************************************
 881  * Send a command to the tablet.
 882  */
 883 static int
 884 aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
 885 {
 886         const int sizeof_buf = 3 * sizeof(u8);
 887         int ret;
 888         u8 *buf;
 889 
 890         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 891         if (!buf)
 892                 return -ENOMEM;
 893 
 894         buf[0] = 2;
 895         buf[1] = command;
 896         buf[2] = data;
 897 
 898         if ((ret =
 899              aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 900                 dev_dbg(&aiptek->intf->dev,
 901                         "aiptek_program: failed, tried to send: 0x%02x 0x%02x\n",
 902                         command, data);
 903         }
 904         kfree(buf);
 905         return ret < 0 ? ret : 0;
 906 }
 907 
 908 /***********************************************************************
 909  * Retrieve information from the tablet. Querying info is defined as first
 910  * sending the {command,data} sequence as a command, followed by a wait
 911  * (aka, "programmaticDelay") and then a "read" request.
 912  */
 913 static int
 914 aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
 915 {
 916         const int sizeof_buf = 3 * sizeof(u8);
 917         int ret;
 918         u8 *buf;
 919 
 920         buf = kmalloc(sizeof_buf, GFP_KERNEL);
 921         if (!buf)
 922                 return -ENOMEM;
 923 
 924         buf[0] = 2;
 925         buf[1] = command;
 926         buf[2] = data;
 927 
 928         if (aiptek_command(aiptek, command, data) != 0) {
 929                 kfree(buf);
 930                 return -EIO;
 931         }
 932         msleep(aiptek->curSetting.programmableDelay);
 933 
 934         if ((ret =
 935              aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
 936                 dev_dbg(&aiptek->intf->dev,
 937                         "aiptek_query failed: returned 0x%02x 0x%02x 0x%02x\n",
 938                         buf[0], buf[1], buf[2]);
 939                 ret = -EIO;
 940         } else {
 941                 ret = get_unaligned_le16(buf + 1);
 942         }
 943         kfree(buf);
 944         return ret;
 945 }
 946 
 947 /***********************************************************************
 948  * Program the tablet into either absolute or relative mode.
 949  * We also get information about the tablet's size.
 950  */
 951 static int aiptek_program_tablet(struct aiptek *aiptek)
 952 {
 953         int ret;
 954         /* Execute Resolution500LPI */
 955         if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
 956                 return ret;
 957 
 958         /* Query getModelCode */
 959         if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
 960                 return ret;
 961         aiptek->features.modelCode = ret & 0xff;
 962 
 963         /* Query getODMCode */
 964         if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
 965                 return ret;
 966         aiptek->features.odmCode = ret;
 967 
 968         /* Query getFirmwareCode */
 969         if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
 970                 return ret;
 971         aiptek->features.firmwareCode = ret;
 972 
 973         /* Query getXextension */
 974         if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
 975                 return ret;
 976         input_set_abs_params(aiptek->inputdev, ABS_X, 0, ret - 1, 0, 0);
 977 
 978         /* Query getYextension */
 979         if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
 980                 return ret;
 981         input_set_abs_params(aiptek->inputdev, ABS_Y, 0, ret - 1, 0, 0);
 982 
 983         /* Query getPressureLevels */
 984         if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
 985                 return ret;
 986         input_set_abs_params(aiptek->inputdev, ABS_PRESSURE, 0, ret - 1, 0, 0);
 987 
 988         /* Depending on whether we are in absolute or relative mode, we will
 989          * do a switchToTablet(absolute) or switchToMouse(relative) command.
 990          */
 991         if (aiptek->curSetting.coordinateMode ==
 992             AIPTEK_COORDINATE_ABSOLUTE_MODE) {
 993                 /* Execute switchToTablet */
 994                 if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
 995                         return ret;
 996                 }
 997         } else {
 998                 /* Execute switchToMouse */
 999                 if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
1000                         return ret;
1001                 }
1002         }
1003 
1004         /* Enable the macro keys */
1005         if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
1006                 return ret;
1007 #if 0
1008         /* Execute FilterOn */
1009         if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
1010                 return ret;
1011 #endif
1012 
1013         /* Execute AutoGainOn */
1014         if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
1015                 return ret;
1016 
1017         /* Reset the eventCount, so we track events from last (re)programming
1018          */
1019         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
1020         aiptek->eventCount = 0;
1021 
1022         return 0;
1023 }
1024 
1025 /***********************************************************************
1026  * Sysfs functions. Sysfs prefers that individually-tunable parameters
1027  * exist in their separate pseudo-files. Summary data that is immutable
1028  * may exist in a singular file so long as you don't define a writeable
1029  * interface.
1030  */
1031 
1032 /***********************************************************************
1033  * support the 'size' file -- display support
1034  */
1035 static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
1036 {
1037         struct aiptek *aiptek = dev_get_drvdata(dev);
1038 
1039         return snprintf(buf, PAGE_SIZE, "%dx%d\n",
1040                         input_abs_get_max(aiptek->inputdev, ABS_X) + 1,
1041                         input_abs_get_max(aiptek->inputdev, ABS_Y) + 1);
1042 }
1043 
1044 /* These structs define the sysfs files, param #1 is the name of the
1045  * file, param 2 is the file permissions, param 3 & 4 are to the
1046  * output generator and input parser routines. Absence of a routine is
1047  * permitted -- it only means can't either 'cat' the file, or send data
1048  * to it.
1049  */
1050 static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
1051 
1052 /***********************************************************************
1053  * support routines for the 'pointer_mode' file. Note that this file
1054  * both displays current setting and allows reprogramming.
1055  */
1056 static struct aiptek_map pointer_mode_map[] = {
1057         { "stylus",     AIPTEK_POINTER_ONLY_STYLUS_MODE },
1058         { "mouse",      AIPTEK_POINTER_ONLY_MOUSE_MODE },
1059         { "either",     AIPTEK_POINTER_EITHER_MODE },
1060         { NULL,         AIPTEK_INVALID_VALUE }
1061 };
1062 
1063 static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
1064 {
1065         struct aiptek *aiptek = dev_get_drvdata(dev);
1066 
1067         return snprintf(buf, PAGE_SIZE, "%s\n",
1068                         map_val_to_str(pointer_mode_map,
1069                                         aiptek->curSetting.pointerMode));
1070 }
1071 
1072 static ssize_t
1073 store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1074 {
1075         struct aiptek *aiptek = dev_get_drvdata(dev);
1076         int new_mode = map_str_to_val(pointer_mode_map, buf, count);
1077 
1078         if (new_mode == AIPTEK_INVALID_VALUE)
1079                 return -EINVAL;
1080 
1081         aiptek->newSetting.pointerMode = new_mode;
1082         return count;
1083 }
1084 
1085 static DEVICE_ATTR(pointer_mode,
1086                    S_IRUGO | S_IWUSR,
1087                    show_tabletPointerMode, store_tabletPointerMode);
1088 
1089 /***********************************************************************
1090  * support routines for the 'coordinate_mode' file. Note that this file
1091  * both displays current setting and allows reprogramming.
1092  */
1093 
1094 static struct aiptek_map coordinate_mode_map[] = {
1095         { "absolute",   AIPTEK_COORDINATE_ABSOLUTE_MODE },
1096         { "relative",   AIPTEK_COORDINATE_RELATIVE_MODE },
1097         { NULL,         AIPTEK_INVALID_VALUE }
1098 };
1099 
1100 static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
1101 {
1102         struct aiptek *aiptek = dev_get_drvdata(dev);
1103 
1104         return snprintf(buf, PAGE_SIZE, "%s\n",
1105                         map_val_to_str(coordinate_mode_map,
1106                                         aiptek->curSetting.coordinateMode));
1107 }
1108 
1109 static ssize_t
1110 store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1111 {
1112         struct aiptek *aiptek = dev_get_drvdata(dev);
1113         int new_mode = map_str_to_val(coordinate_mode_map, buf, count);
1114 
1115         if (new_mode == AIPTEK_INVALID_VALUE)
1116                 return -EINVAL;
1117 
1118         aiptek->newSetting.coordinateMode = new_mode;
1119         return count;
1120 }
1121 
1122 static DEVICE_ATTR(coordinate_mode,
1123                    S_IRUGO | S_IWUSR,
1124                    show_tabletCoordinateMode, store_tabletCoordinateMode);
1125 
1126 /***********************************************************************
1127  * support routines for the 'tool_mode' file. Note that this file
1128  * both displays current setting and allows reprogramming.
1129  */
1130 
1131 static struct aiptek_map tool_mode_map[] = {
1132         { "mouse",      AIPTEK_TOOL_BUTTON_MOUSE_MODE },
1133         { "eraser",     AIPTEK_TOOL_BUTTON_ERASER_MODE },
1134         { "pencil",     AIPTEK_TOOL_BUTTON_PENCIL_MODE },
1135         { "pen",        AIPTEK_TOOL_BUTTON_PEN_MODE },
1136         { "brush",      AIPTEK_TOOL_BUTTON_BRUSH_MODE },
1137         { "airbrush",   AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE },
1138         { "lens",       AIPTEK_TOOL_BUTTON_LENS_MODE },
1139         { NULL,         AIPTEK_INVALID_VALUE }
1140 };
1141 
1142 static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
1143 {
1144         struct aiptek *aiptek = dev_get_drvdata(dev);
1145 
1146         return snprintf(buf, PAGE_SIZE, "%s\n",
1147                         map_val_to_str(tool_mode_map,
1148                                         aiptek->curSetting.toolMode));
1149 }
1150 
1151 static ssize_t
1152 store_tabletToolMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1153 {
1154         struct aiptek *aiptek = dev_get_drvdata(dev);
1155         int new_mode = map_str_to_val(tool_mode_map, buf, count);
1156 
1157         if (new_mode == AIPTEK_INVALID_VALUE)
1158                 return -EINVAL;
1159 
1160         aiptek->newSetting.toolMode = new_mode;
1161         return count;
1162 }
1163 
1164 static DEVICE_ATTR(tool_mode,
1165                    S_IRUGO | S_IWUSR,
1166                    show_tabletToolMode, store_tabletToolMode);
1167 
1168 /***********************************************************************
1169  * support routines for the 'xtilt' file. Note that this file
1170  * both displays current setting and allows reprogramming.
1171  */
1172 static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *attr, char *buf)
1173 {
1174         struct aiptek *aiptek = dev_get_drvdata(dev);
1175 
1176         if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
1177                 return snprintf(buf, PAGE_SIZE, "disable\n");
1178         } else {
1179                 return snprintf(buf, PAGE_SIZE, "%d\n",
1180                                 aiptek->curSetting.xTilt);
1181         }
1182 }
1183 
1184 static ssize_t
1185 store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1186 {
1187         struct aiptek *aiptek = dev_get_drvdata(dev);
1188         int x;
1189 
1190         if (kstrtoint(buf, 10, &x)) {
1191                 size_t len = buf[count - 1] == '\n' ? count - 1 : count;
1192 
1193                 if (strncmp(buf, "disable", len))
1194                         return -EINVAL;
1195 
1196                 aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
1197         } else {
1198                 if (x < AIPTEK_TILT_MIN || x > AIPTEK_TILT_MAX)
1199                         return -EINVAL;
1200 
1201                 aiptek->newSetting.xTilt = x;
1202         }
1203 
1204         return count;
1205 }
1206 
1207 static DEVICE_ATTR(xtilt,
1208                    S_IRUGO | S_IWUSR, show_tabletXtilt, store_tabletXtilt);
1209 
1210 /***********************************************************************
1211  * support routines for the 'ytilt' file. Note that this file
1212  * both displays current setting and allows reprogramming.
1213  */
1214 static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *attr, char *buf)
1215 {
1216         struct aiptek *aiptek = dev_get_drvdata(dev);
1217 
1218         if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
1219                 return snprintf(buf, PAGE_SIZE, "disable\n");
1220         } else {
1221                 return snprintf(buf, PAGE_SIZE, "%d\n",
1222                                 aiptek->curSetting.yTilt);
1223         }
1224 }
1225 
1226 static ssize_t
1227 store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1228 {
1229         struct aiptek *aiptek = dev_get_drvdata(dev);
1230         int y;
1231 
1232         if (kstrtoint(buf, 10, &y)) {
1233                 size_t len = buf[count - 1] == '\n' ? count - 1 : count;
1234 
1235                 if (strncmp(buf, "disable", len))
1236                         return -EINVAL;
1237 
1238                 aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
1239         } else {
1240                 if (y < AIPTEK_TILT_MIN || y > AIPTEK_TILT_MAX)
1241                         return -EINVAL;
1242 
1243                 aiptek->newSetting.yTilt = y;
1244         }
1245 
1246         return count;
1247 }
1248 
1249 static DEVICE_ATTR(ytilt,
1250                    S_IRUGO | S_IWUSR, show_tabletYtilt, store_tabletYtilt);
1251 
1252 /***********************************************************************
1253  * support routines for the 'jitter' file. Note that this file
1254  * both displays current setting and allows reprogramming.
1255  */
1256 static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribute *attr, char *buf)
1257 {
1258         struct aiptek *aiptek = dev_get_drvdata(dev);
1259 
1260         return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
1261 }
1262 
1263 static ssize_t
1264 store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1265 {
1266         struct aiptek *aiptek = dev_get_drvdata(dev);
1267         int err, j;
1268 
1269         err = kstrtoint(buf, 10, &j);
1270         if (err)
1271                 return err;
1272 
1273         aiptek->newSetting.jitterDelay = j;
1274         return count;
1275 }
1276 
1277 static DEVICE_ATTR(jitter,
1278                    S_IRUGO | S_IWUSR,
1279                    show_tabletJitterDelay, store_tabletJitterDelay);
1280 
1281 /***********************************************************************
1282  * support routines for the 'delay' file. Note that this file
1283  * both displays current setting and allows reprogramming.
1284  */
1285 static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, char *buf)
1286 {
1287         struct aiptek *aiptek = dev_get_drvdata(dev);
1288 
1289         return snprintf(buf, PAGE_SIZE, "%d\n",
1290                         aiptek->curSetting.programmableDelay);
1291 }
1292 
1293 static ssize_t
1294 store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1295 {
1296         struct aiptek *aiptek = dev_get_drvdata(dev);
1297         int err, d;
1298 
1299         err = kstrtoint(buf, 10, &d);
1300         if (err)
1301                 return err;
1302 
1303         aiptek->newSetting.programmableDelay = d;
1304         return count;
1305 }
1306 
1307 static DEVICE_ATTR(delay,
1308                    S_IRUGO | S_IWUSR,
1309                    show_tabletProgrammableDelay, store_tabletProgrammableDelay);
1310 
1311 /***********************************************************************
1312  * support routines for the 'event_count' file. Note that this file
1313  * only displays current setting.
1314  */
1315 static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attribute *attr, char *buf)
1316 {
1317         struct aiptek *aiptek = dev_get_drvdata(dev);
1318 
1319         return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
1320 }
1321 
1322 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
1323 
1324 /***********************************************************************
1325  * support routines for the 'diagnostic' file. Note that this file
1326  * only displays current setting.
1327  */
1328 static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_attribute *attr, char *buf)
1329 {
1330         struct aiptek *aiptek = dev_get_drvdata(dev);
1331         char *retMsg;
1332 
1333         switch (aiptek->diagnostic) {
1334         case AIPTEK_DIAGNOSTIC_NA:
1335                 retMsg = "no errors\n";
1336                 break;
1337 
1338         case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
1339                 retMsg = "Error: receiving relative reports\n";
1340                 break;
1341 
1342         case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
1343                 retMsg = "Error: receiving absolute reports\n";
1344                 break;
1345 
1346         case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
1347                 if (aiptek->curSetting.pointerMode ==
1348                     AIPTEK_POINTER_ONLY_MOUSE_MODE) {
1349                         retMsg = "Error: receiving stylus reports\n";
1350                 } else {
1351                         retMsg = "Error: receiving mouse reports\n";
1352                 }
1353                 break;
1354 
1355         default:
1356                 return 0;
1357         }
1358         return snprintf(buf, PAGE_SIZE, retMsg);
1359 }
1360 
1361 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
1362 
1363 /***********************************************************************
1364  * support routines for the 'stylus_upper' file. Note that this file
1365  * both displays current setting and allows for setting changing.
1366  */
1367 
1368 static struct aiptek_map stylus_button_map[] = {
1369         { "upper",      AIPTEK_STYLUS_UPPER_BUTTON },
1370         { "lower",      AIPTEK_STYLUS_LOWER_BUTTON },
1371         { NULL,         AIPTEK_INVALID_VALUE }
1372 };
1373 
1374 static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
1375 {
1376         struct aiptek *aiptek = dev_get_drvdata(dev);
1377 
1378         return snprintf(buf, PAGE_SIZE, "%s\n",
1379                         map_val_to_str(stylus_button_map,
1380                                         aiptek->curSetting.stylusButtonUpper));
1381 }
1382 
1383 static ssize_t
1384 store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1385 {
1386         struct aiptek *aiptek = dev_get_drvdata(dev);
1387         int new_button = map_str_to_val(stylus_button_map, buf, count);
1388 
1389         if (new_button == AIPTEK_INVALID_VALUE)
1390                 return -EINVAL;
1391 
1392         aiptek->newSetting.stylusButtonUpper = new_button;
1393         return count;
1394 }
1395 
1396 static DEVICE_ATTR(stylus_upper,
1397                    S_IRUGO | S_IWUSR,
1398                    show_tabletStylusUpper, store_tabletStylusUpper);
1399 
1400 /***********************************************************************
1401  * support routines for the 'stylus_lower' file. Note that this file
1402  * both displays current setting and allows for setting changing.
1403  */
1404 
1405 static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribute *attr, char *buf)
1406 {
1407         struct aiptek *aiptek = dev_get_drvdata(dev);
1408 
1409         return snprintf(buf, PAGE_SIZE, "%s\n",
1410                         map_val_to_str(stylus_button_map,
1411                                         aiptek->curSetting.stylusButtonLower));
1412 }
1413 
1414 static ssize_t
1415 store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1416 {
1417         struct aiptek *aiptek = dev_get_drvdata(dev);
1418         int new_button = map_str_to_val(stylus_button_map, buf, count);
1419 
1420         if (new_button == AIPTEK_INVALID_VALUE)
1421                 return -EINVAL;
1422 
1423         aiptek->newSetting.stylusButtonLower = new_button;
1424         return count;
1425 }
1426 
1427 static DEVICE_ATTR(stylus_lower,
1428                    S_IRUGO | S_IWUSR,
1429                    show_tabletStylusLower, store_tabletStylusLower);
1430 
1431 /***********************************************************************
1432  * support routines for the 'mouse_left' file. Note that this file
1433  * both displays current setting and allows for setting changing.
1434  */
1435 
1436 static struct aiptek_map mouse_button_map[] = {
1437         { "left",       AIPTEK_MOUSE_LEFT_BUTTON },
1438         { "middle",     AIPTEK_MOUSE_MIDDLE_BUTTON },
1439         { "right",      AIPTEK_MOUSE_RIGHT_BUTTON },
1440         { NULL,         AIPTEK_INVALID_VALUE }
1441 };
1442 
1443 static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
1444 {
1445         struct aiptek *aiptek = dev_get_drvdata(dev);
1446 
1447         return snprintf(buf, PAGE_SIZE, "%s\n",
1448                         map_val_to_str(mouse_button_map,
1449                                         aiptek->curSetting.mouseButtonLeft));
1450 }
1451 
1452 static ssize_t
1453 store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1454 {
1455         struct aiptek *aiptek = dev_get_drvdata(dev);
1456         int new_button = map_str_to_val(mouse_button_map, buf, count);
1457 
1458         if (new_button == AIPTEK_INVALID_VALUE)
1459                 return -EINVAL;
1460 
1461         aiptek->newSetting.mouseButtonLeft = new_button;
1462         return count;
1463 }
1464 
1465 static DEVICE_ATTR(mouse_left,
1466                    S_IRUGO | S_IWUSR,
1467                    show_tabletMouseLeft, store_tabletMouseLeft);
1468 
1469 /***********************************************************************
1470  * support routines for the 'mouse_middle' file. Note that this file
1471  * both displays current setting and allows for setting changing.
1472  */
1473 static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, char *buf)
1474 {
1475         struct aiptek *aiptek = dev_get_drvdata(dev);
1476 
1477         return snprintf(buf, PAGE_SIZE, "%s\n",
1478                         map_val_to_str(mouse_button_map,
1479                                         aiptek->curSetting.mouseButtonMiddle));
1480 }
1481 
1482 static ssize_t
1483 store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1484 {
1485         struct aiptek *aiptek = dev_get_drvdata(dev);
1486         int new_button = map_str_to_val(mouse_button_map, buf, count);
1487 
1488         if (new_button == AIPTEK_INVALID_VALUE)
1489                 return -EINVAL;
1490 
1491         aiptek->newSetting.mouseButtonMiddle = new_button;
1492         return count;
1493 }
1494 
1495 static DEVICE_ATTR(mouse_middle,
1496                    S_IRUGO | S_IWUSR,
1497                    show_tabletMouseMiddle, store_tabletMouseMiddle);
1498 
1499 /***********************************************************************
1500  * support routines for the 'mouse_right' file. Note that this file
1501  * both displays current setting and allows for setting changing.
1502  */
1503 static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute *attr, char *buf)
1504 {
1505         struct aiptek *aiptek = dev_get_drvdata(dev);
1506 
1507         return snprintf(buf, PAGE_SIZE, "%s\n",
1508                         map_val_to_str(mouse_button_map,
1509                                         aiptek->curSetting.mouseButtonRight));
1510 }
1511 
1512 static ssize_t
1513 store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1514 {
1515         struct aiptek *aiptek = dev_get_drvdata(dev);
1516         int new_button = map_str_to_val(mouse_button_map, buf, count);
1517 
1518         if (new_button == AIPTEK_INVALID_VALUE)
1519                 return -EINVAL;
1520 
1521         aiptek->newSetting.mouseButtonRight = new_button;
1522         return count;
1523 }
1524 
1525 static DEVICE_ATTR(mouse_right,
1526                    S_IRUGO | S_IWUSR,
1527                    show_tabletMouseRight, store_tabletMouseRight);
1528 
1529 /***********************************************************************
1530  * support routines for the 'wheel' file. Note that this file
1531  * both displays current setting and allows for setting changing.
1532  */
1533 static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *attr, char *buf)
1534 {
1535         struct aiptek *aiptek = dev_get_drvdata(dev);
1536 
1537         if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
1538                 return snprintf(buf, PAGE_SIZE, "disable\n");
1539         } else {
1540                 return snprintf(buf, PAGE_SIZE, "%d\n",
1541                                 aiptek->curSetting.wheel);
1542         }
1543 }
1544 
1545 static ssize_t
1546 store_tabletWheel(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1547 {
1548         struct aiptek *aiptek = dev_get_drvdata(dev);
1549         int err, w;
1550 
1551         err = kstrtoint(buf, 10, &w);
1552         if (err)
1553                 return err;
1554 
1555         aiptek->newSetting.wheel = w;
1556         return count;
1557 }
1558 
1559 static DEVICE_ATTR(wheel,
1560                    S_IRUGO | S_IWUSR, show_tabletWheel, store_tabletWheel);
1561 
1562 /***********************************************************************
1563  * support routines for the 'execute' file. Note that this file
1564  * both displays current setting and allows for setting changing.
1565  */
1566 static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *attr, char *buf)
1567 {
1568         /* There is nothing useful to display, so a one-line manual
1569          * is in order...
1570          */
1571         return snprintf(buf, PAGE_SIZE,
1572                         "Write anything to this file to program your tablet.\n");
1573 }
1574 
1575 static ssize_t
1576 store_tabletExecute(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1577 {
1578         struct aiptek *aiptek = dev_get_drvdata(dev);
1579 
1580         /* We do not care what you write to this file. Merely the action
1581          * of writing to this file triggers a tablet reprogramming.
1582          */
1583         memcpy(&aiptek->curSetting, &aiptek->newSetting,
1584                sizeof(struct aiptek_settings));
1585 
1586         if (aiptek_program_tablet(aiptek) < 0)
1587                 return -EIO;
1588 
1589         return count;
1590 }
1591 
1592 static DEVICE_ATTR(execute,
1593                    S_IRUGO | S_IWUSR, show_tabletExecute, store_tabletExecute);
1594 
1595 /***********************************************************************
1596  * support routines for the 'odm_code' file. Note that this file
1597  * only displays current setting.
1598  */
1599 static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *attr, char *buf)
1600 {
1601         struct aiptek *aiptek = dev_get_drvdata(dev);
1602 
1603         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
1604 }
1605 
1606 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
1607 
1608 /***********************************************************************
1609  * support routines for the 'model_code' file. Note that this file
1610  * only displays current setting.
1611  */
1612 static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute *attr, char *buf)
1613 {
1614         struct aiptek *aiptek = dev_get_drvdata(dev);
1615 
1616         return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
1617 }
1618 
1619 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
1620 
1621 /***********************************************************************
1622  * support routines for the 'firmware_code' file. Note that this file
1623  * only displays current setting.
1624  */
1625 static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *attr, char *buf)
1626 {
1627         struct aiptek *aiptek = dev_get_drvdata(dev);
1628 
1629         return snprintf(buf, PAGE_SIZE, "%04x\n",
1630                         aiptek->features.firmwareCode);
1631 }
1632 
1633 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
1634 
1635 static struct attribute *aiptek_attributes[] = {
1636         &dev_attr_size.attr,
1637         &dev_attr_pointer_mode.attr,
1638         &dev_attr_coordinate_mode.attr,
1639         &dev_attr_tool_mode.attr,
1640         &dev_attr_xtilt.attr,
1641         &dev_attr_ytilt.attr,
1642         &dev_attr_jitter.attr,
1643         &dev_attr_delay.attr,
1644         &dev_attr_event_count.attr,
1645         &dev_attr_diagnostic.attr,
1646         &dev_attr_odm_code.attr,
1647         &dev_attr_model_code.attr,
1648         &dev_attr_firmware_code.attr,
1649         &dev_attr_stylus_lower.attr,
1650         &dev_attr_stylus_upper.attr,
1651         &dev_attr_mouse_left.attr,
1652         &dev_attr_mouse_middle.attr,
1653         &dev_attr_mouse_right.attr,
1654         &dev_attr_wheel.attr,
1655         &dev_attr_execute.attr,
1656         NULL
1657 };
1658 
1659 static const struct attribute_group aiptek_attribute_group = {
1660         .attrs  = aiptek_attributes,
1661 };
1662 
1663 /***********************************************************************
1664  * This routine is called when a tablet has been identified. It basically
1665  * sets up the tablet and the driver's internal structures.
1666  */
1667 static int
1668 aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
1669 {
1670         struct usb_device *usbdev = interface_to_usbdev(intf);
1671         struct usb_endpoint_descriptor *endpoint;
1672         struct aiptek *aiptek;
1673         struct input_dev *inputdev;
1674         int i;
1675         int speeds[] = { 0,
1676                 AIPTEK_PROGRAMMABLE_DELAY_50,
1677                 AIPTEK_PROGRAMMABLE_DELAY_400,
1678                 AIPTEK_PROGRAMMABLE_DELAY_25,
1679                 AIPTEK_PROGRAMMABLE_DELAY_100,
1680                 AIPTEK_PROGRAMMABLE_DELAY_200,
1681                 AIPTEK_PROGRAMMABLE_DELAY_300
1682         };
1683         int err = -ENOMEM;
1684 
1685         /* programmableDelay is where the command-line specified
1686          * delay is kept. We make it the first element of speeds[],
1687          * so therefore, your override speed is tried first, then the
1688          * remainder. Note that the default value of 400ms will be tried
1689          * if you do not specify any command line parameter.
1690          */
1691         speeds[0] = programmableDelay;
1692 
1693         aiptek = kzalloc(sizeof(struct aiptek), GFP_KERNEL);
1694         inputdev = input_allocate_device();
1695         if (!aiptek || !inputdev) {
1696                 dev_warn(&intf->dev,
1697                          "cannot allocate memory or input device\n");
1698                 goto fail1;
1699         }
1700 
1701         aiptek->data = usb_alloc_coherent(usbdev, AIPTEK_PACKET_LENGTH,
1702                                           GFP_KERNEL, &aiptek->data_dma);
1703         if (!aiptek->data) {
1704                 dev_warn(&intf->dev, "cannot allocate usb buffer\n");
1705                 goto fail1;
1706         }
1707 
1708         aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
1709         if (!aiptek->urb) {
1710                 dev_warn(&intf->dev, "cannot allocate urb\n");
1711                 goto fail2;
1712         }
1713 
1714         aiptek->inputdev = inputdev;
1715         aiptek->intf = intf;
1716         aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
1717         aiptek->inDelay = 0;
1718         aiptek->endDelay = 0;
1719         aiptek->previousJitterable = 0;
1720         aiptek->lastMacro = -1;
1721 
1722         /* Set up the curSettings struct. Said struct contains the current
1723          * programmable parameters. The newSetting struct contains changes
1724          * the user makes to the settings via the sysfs interface. Those
1725          * changes are not "committed" to curSettings until the user
1726          * writes to the sysfs/.../execute file.
1727          */
1728         aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
1729         aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
1730         aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
1731         aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
1732         aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
1733         aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
1734         aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
1735         aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
1736         aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
1737         aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
1738         aiptek->curSetting.jitterDelay = jitterDelay;
1739         aiptek->curSetting.programmableDelay = programmableDelay;
1740 
1741         /* Both structs should have equivalent settings
1742          */
1743         aiptek->newSetting = aiptek->curSetting;
1744 
1745         /* Determine the usb devices' physical path.
1746          * Asketh not why we always pretend we're using "../input0",
1747          * but I suspect this will have to be refactored one
1748          * day if a single USB device can be a keyboard & a mouse
1749          * & a tablet, and the inputX number actually will tell
1750          * us something...
1751          */
1752         usb_make_path(usbdev, aiptek->features.usbPath,
1753                         sizeof(aiptek->features.usbPath));
1754         strlcat(aiptek->features.usbPath, "/input0",
1755                 sizeof(aiptek->features.usbPath));
1756 
1757         /* Set up client data, pointers to open and close routines
1758          * for the input device.
1759          */
1760         inputdev->name = "Aiptek";
1761         inputdev->phys = aiptek->features.usbPath;
1762         usb_to_input_id(usbdev, &inputdev->id);
1763         inputdev->dev.parent = &intf->dev;
1764 
1765         input_set_drvdata(inputdev, aiptek);
1766 
1767         inputdev->open = aiptek_open;
1768         inputdev->close = aiptek_close;
1769 
1770         /* Now program the capacities of the tablet, in terms of being
1771          * an input device.
1772          */
1773         for (i = 0; i < ARRAY_SIZE(eventTypes); ++i)
1774                 __set_bit(eventTypes[i], inputdev->evbit);
1775 
1776         for (i = 0; i < ARRAY_SIZE(absEvents); ++i)
1777                 __set_bit(absEvents[i], inputdev->absbit);
1778 
1779         for (i = 0; i < ARRAY_SIZE(relEvents); ++i)
1780                 __set_bit(relEvents[i], inputdev->relbit);
1781 
1782         __set_bit(MSC_SERIAL, inputdev->mscbit);
1783 
1784         /* Set up key and button codes */
1785         for (i = 0; i < ARRAY_SIZE(buttonEvents); ++i)
1786                 __set_bit(buttonEvents[i], inputdev->keybit);
1787 
1788         for (i = 0; i < ARRAY_SIZE(macroKeyEvents); ++i)
1789                 __set_bit(macroKeyEvents[i], inputdev->keybit);
1790 
1791         /*
1792          * Program the input device coordinate capacities. We do not yet
1793          * know what maximum X, Y, and Z values are, so we're putting fake
1794          * values in. Later, we'll ask the tablet to put in the correct
1795          * values.
1796          */
1797         input_set_abs_params(inputdev, ABS_X, 0, 2999, 0, 0);
1798         input_set_abs_params(inputdev, ABS_Y, 0, 2249, 0, 0);
1799         input_set_abs_params(inputdev, ABS_PRESSURE, 0, 511, 0, 0);
1800         input_set_abs_params(inputdev, ABS_TILT_X, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
1801         input_set_abs_params(inputdev, ABS_TILT_Y, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
1802         input_set_abs_params(inputdev, ABS_WHEEL, AIPTEK_WHEEL_MIN, AIPTEK_WHEEL_MAX - 1, 0, 0);
1803 
1804         /* Verify that a device really has an endpoint */
1805         if (intf->cur_altsetting->desc.bNumEndpoints < 1) {
1806                 dev_err(&intf->dev,
1807                         "interface has %d endpoints, but must have minimum 1\n",
1808                         intf->cur_altsetting->desc.bNumEndpoints);
1809                 err = -EINVAL;
1810                 goto fail3;
1811         }
1812         endpoint = &intf->cur_altsetting->endpoint[0].desc;
1813 
1814         /* Go set up our URB, which is called when the tablet receives
1815          * input.
1816          */
1817         usb_fill_int_urb(aiptek->urb,
1818                          usbdev,
1819                          usb_rcvintpipe(usbdev,
1820                                         endpoint->bEndpointAddress),
1821                          aiptek->data, 8, aiptek_irq, aiptek,
1822                          endpoint->bInterval);
1823 
1824         aiptek->urb->transfer_dma = aiptek->data_dma;
1825         aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1826 
1827         /* Program the tablet. This sets the tablet up in the mode
1828          * specified in newSetting, and also queries the tablet's
1829          * physical capacities.
1830          *
1831          * Sanity check: if a tablet doesn't like the slow programmatic
1832          * delay, we often get sizes of 0x0. Let's use that as an indicator
1833          * to try faster delays, up to 25 ms. If that logic fails, well, you'll
1834          * have to explain to us how your tablet thinks it's 0x0, and yet that's
1835          * not an error :-)
1836          */
1837 
1838         for (i = 0; i < ARRAY_SIZE(speeds); ++i) {
1839                 aiptek->curSetting.programmableDelay = speeds[i];
1840                 (void)aiptek_program_tablet(aiptek);
1841                 if (input_abs_get_max(aiptek->inputdev, ABS_X) > 0) {
1842                         dev_info(&intf->dev,
1843                                  "Aiptek using %d ms programming speed\n",
1844                                  aiptek->curSetting.programmableDelay);
1845                         break;
1846                 }
1847         }
1848 
1849         /* Murphy says that some day someone will have a tablet that fails the
1850            above test. That's you, Frederic Rodrigo */
1851         if (i == ARRAY_SIZE(speeds)) {
1852                 dev_info(&intf->dev,
1853                          "Aiptek tried all speeds, no sane response\n");
1854                 err = -EINVAL;
1855                 goto fail3;
1856         }
1857 
1858         /* Associate this driver's struct with the usb interface.
1859          */
1860         usb_set_intfdata(intf, aiptek);
1861 
1862         /* Set up the sysfs files
1863          */
1864         err = sysfs_create_group(&intf->dev.kobj, &aiptek_attribute_group);
1865         if (err) {
1866                 dev_warn(&intf->dev, "cannot create sysfs group err: %d\n",
1867                          err);
1868                 goto fail3;
1869         }
1870 
1871         /* Register the tablet as an Input Device
1872          */
1873         err = input_register_device(aiptek->inputdev);
1874         if (err) {
1875                 dev_warn(&intf->dev,
1876                          "input_register_device returned err: %d\n", err);
1877                 goto fail4;
1878         }
1879         return 0;
1880 
1881  fail4: sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
1882  fail3: usb_free_urb(aiptek->urb);
1883  fail2: usb_free_coherent(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
1884                           aiptek->data_dma);
1885  fail1: usb_set_intfdata(intf, NULL);
1886         input_free_device(inputdev);
1887         kfree(aiptek);
1888         return err;
1889 }
1890 
1891 /***********************************************************************
1892  * Deal with tablet disconnecting from the system.
1893  */
1894 static void aiptek_disconnect(struct usb_interface *intf)
1895 {
1896         struct aiptek *aiptek = usb_get_intfdata(intf);
1897 
1898         /* Disassociate driver's struct with usb interface
1899          */
1900         usb_set_intfdata(intf, NULL);
1901         if (aiptek != NULL) {
1902                 /* Free & unhook everything from the system.
1903                  */
1904                 usb_kill_urb(aiptek->urb);
1905                 input_unregister_device(aiptek->inputdev);
1906                 sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
1907                 usb_free_urb(aiptek->urb);
1908                 usb_free_coherent(interface_to_usbdev(intf),
1909                                   AIPTEK_PACKET_LENGTH,
1910                                   aiptek->data, aiptek->data_dma);
1911                 kfree(aiptek);
1912         }
1913 }
1914 
1915 static struct usb_driver aiptek_driver = {
1916         .name = "aiptek",
1917         .probe = aiptek_probe,
1918         .disconnect = aiptek_disconnect,
1919         .id_table = aiptek_ids,
1920 };
1921 
1922 module_usb_driver(aiptek_driver);
1923 
1924 MODULE_AUTHOR("Bryan W. Headley/Chris Atenasio/Cedric Brun/Rene van Paassen");
1925 MODULE_DESCRIPTION("Aiptek HyperPen USB Tablet Driver");
1926 MODULE_LICENSE("GPL");
1927 
1928 module_param(programmableDelay, int, 0);
1929 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
1930 module_param(jitterDelay, int, 0);
1931 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");