Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
[linux-2.6] / 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 occurred while the tablet was in absolute or relative
390  * mode.
391  *
392  * Other tablets use the notion of a certain minimum stylus pressure
393  * to infer proximity. While that could have been done, that is yet
394  * another 'by convention' behavior, the documentation for which
395  * would be spread between two (or more) pieces of software.
396  *
397  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
398  * replaced with the input_sync() method (which emits EV_SYN.)
399  */
400
401 static void aiptek_irq(struct urb *urb, struct pt_regs *regs)
402 {
403         struct aiptek *aiptek = urb->context;
404         unsigned char *data = aiptek->data;
405         struct input_dev *inputdev = &aiptek->inputdev;
406         int jitterable = 0;
407         int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
408
409         switch (urb->status) {
410         case 0:
411                 /* Success */
412                 break;
413
414         case -ECONNRESET:
415         case -ENOENT:
416         case -ESHUTDOWN:
417                 /* This urb is terminated, clean up */
418                 dbg("%s - urb shutting down with status: %d",
419                     __FUNCTION__, urb->status);
420                 return;
421
422         default:
423                 dbg("%s - nonzero urb status received: %d",
424                     __FUNCTION__, urb->status);
425                 goto exit;
426         }
427
428         /* See if we are in a delay loop -- throw out report if true.
429          */
430         if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
431                 goto exit;
432         }
433
434         aiptek->inDelay = 0;
435         aiptek->eventCount++;
436
437         /* Report 1 delivers relative coordinates with either a stylus
438          * or the mouse. You do not know, however, which input
439          * tool generated the event.
440          */
441         if (data[0] == 1) {
442                 if (aiptek->curSetting.coordinateMode ==
443                     AIPTEK_COORDINATE_ABSOLUTE_MODE) {
444                         aiptek->diagnostic =
445                             AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
446                 } else {
447                         input_regs(inputdev, regs);
448
449                         x = aiptek_convert_from_2s_complement(data[2]);
450                         y = aiptek_convert_from_2s_complement(data[3]);
451
452                         /* jitterable keeps track of whether any button has been pressed.
453                          * We're also using it to remap the physical mouse button mask
454                          * to pseudo-settings. (We don't specifically care about it's
455                          * value after moving/transposing mouse button bitmasks, except
456                          * that a non-zero value indicates that one or more
457                          * mouse button was pressed.)
458                          */
459                         jitterable = data[5] & 0x07;
460
461                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
462                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
463                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
464
465                         input_report_key(inputdev, BTN_LEFT, left);
466                         input_report_key(inputdev, BTN_MIDDLE, middle);
467                         input_report_key(inputdev, BTN_RIGHT, right);
468                         input_report_rel(inputdev, REL_X, x);
469                         input_report_rel(inputdev, REL_Y, y);
470                         input_report_rel(inputdev, REL_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
471
472                         /* Wheel support is in the form of a single-event
473                          * firing.
474                          */
475                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
476                                 input_report_rel(inputdev, REL_WHEEL,
477                                                  aiptek->curSetting.wheel);
478                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
479                         }
480                         input_sync(inputdev);
481                 }
482         }
483         /* Report 2 is delivered only by the stylus, and delivers
484          * absolute coordinates.
485          */
486         else if (data[0] == 2) {
487                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
488                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
489                 } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
490                             (aiptek->curSetting.pointerMode)) {
491                                 aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
492                 } else {
493                         input_regs(inputdev, regs);
494
495                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
496                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
497                         z = le16_to_cpu(get_unaligned((__le16 *) (data + 6)));
498
499                         p = (data[5] & 0x01) != 0 ? 1 : 0;
500                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
501                         tip = (data[5] & 0x04) != 0 ? 1 : 0;
502
503                         /* Use jitterable to re-arrange button masks
504                          */
505                         jitterable = data[5] & 0x18;
506
507                         bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
508                         pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
509
510                         /* dv indicates 'data valid' (e.g., the tablet is in sync
511                          * and has delivered a "correct" report) We will ignore
512                          * all 'bad' reports...
513                          */
514                         if (dv != 0) {
515                                 /* If we've not already sent a tool_button_?? code, do
516                                  * so now. Then set FIRED_BIT so it won't be resent unless
517                                  * the user forces FIRED_BIT off.
518                                  */
519                                 if (TOOL_BUTTON_FIRED
520                                     (aiptek->curSetting.toolMode) == 0) {
521                                         input_report_key(inputdev,
522                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
523                                                          1);
524                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
525                                 }
526
527                                 if (p != 0) {
528                                         input_report_abs(inputdev, ABS_X, x);
529                                         input_report_abs(inputdev, ABS_Y, y);
530                                         input_report_abs(inputdev, ABS_PRESSURE, z);
531
532                                         input_report_key(inputdev, BTN_TOUCH, tip);
533                                         input_report_key(inputdev, BTN_STYLUS, bs);
534                                         input_report_key(inputdev, BTN_STYLUS2, pck);
535
536                                         if (aiptek->curSetting.xTilt !=
537                                             AIPTEK_TILT_DISABLE) {
538                                                 input_report_abs(inputdev,
539                                                                  ABS_TILT_X,
540                                                                  aiptek->curSetting.xTilt);
541                                         }
542                                         if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
543                                                 input_report_abs(inputdev,
544                                                                  ABS_TILT_Y,
545                                                                  aiptek->curSetting.yTilt);
546                                         }
547
548                                         /* Wheel support is in the form of a single-event
549                                          * firing.
550                                          */
551                                         if (aiptek->curSetting.wheel !=
552                                             AIPTEK_WHEEL_DISABLE) {
553                                                 input_report_abs(inputdev,
554                                                                  ABS_WHEEL,
555                                                                  aiptek->curSetting.wheel);
556                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
557                                         }
558                                 }
559                                 input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
560                                 input_sync(inputdev);
561                         }
562                 }
563         }
564         /* Report 3's come from the mouse in absolute mode.
565          */
566         else if (data[0] == 3) {
567                 if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
568                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
569                 } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
570                         (aiptek->curSetting.pointerMode)) {
571                         aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
572                 } else {
573                         input_regs(inputdev, regs);
574                         x = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
575                         y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
576
577                         jitterable = data[5] & 0x1c;
578
579                         p = (data[5] & 0x01) != 0 ? 1 : 0;
580                         dv = (data[5] & 0x02) != 0 ? 1 : 0;
581                         left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
582                         right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
583                         middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
584
585                         if (dv != 0) {
586                                 /* If we've not already sent a tool_button_?? code, do
587                                  * so now. Then set FIRED_BIT so it won't be resent unless
588                                  * the user forces FIRED_BIT off.
589                                  */
590                                 if (TOOL_BUTTON_FIRED
591                                     (aiptek->curSetting.toolMode) == 0) {
592                                         input_report_key(inputdev,
593                                                          TOOL_BUTTON(aiptek->curSetting.toolMode),
594                                                          1);
595                                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
596                                 }
597
598                                 if (p != 0) {
599                                         input_report_abs(inputdev, ABS_X, x);
600                                         input_report_abs(inputdev, ABS_Y, y);
601
602                                         input_report_key(inputdev, BTN_LEFT, left);
603                                         input_report_key(inputdev, BTN_MIDDLE, middle);
604                                         input_report_key(inputdev, BTN_RIGHT, right);
605
606                                         /* Wheel support is in the form of a single-event
607                                          * firing.
608                                          */
609                                         if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
610                                                 input_report_abs(inputdev,
611                                                                  ABS_WHEEL,
612                                                                  aiptek->curSetting.wheel);
613                                                 aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
614                                         }
615                                 }
616                                 input_report_rel(inputdev, REL_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
617                                 input_sync(inputdev);
618                         }
619                 }
620         }
621         /* Report 4s come from the macro keys when pressed by stylus
622          */
623         else if (data[0] == 4) {
624                 jitterable = data[1] & 0x18;
625
626                 p = (data[1] & 0x01) != 0 ? 1 : 0;
627                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
628                 tip = (data[1] & 0x04) != 0 ? 1 : 0;
629                 bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
630                 pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
631
632                 macro = data[3];
633                 z = le16_to_cpu(get_unaligned((__le16 *) (data + 4)));
634
635                 if (dv != 0) {
636                         input_regs(inputdev, regs);
637
638                         /* If we've not already sent a tool_button_?? code, do
639                          * so now. Then set FIRED_BIT so it won't be resent unless
640                          * the user forces FIRED_BIT off.
641                          */
642                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
643                                 input_report_key(inputdev,
644                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
645                                                  1);
646                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
647                         }
648
649                         if (p != 0) {
650                                 input_report_key(inputdev, BTN_TOUCH, tip);
651                                 input_report_key(inputdev, BTN_STYLUS, bs);
652                                 input_report_key(inputdev, BTN_STYLUS2, pck);
653                                 input_report_abs(inputdev, ABS_PRESSURE, z);
654                         }
655
656                         /* For safety, we're sending key 'break' codes for the
657                          * neighboring macro keys.
658                          */
659                         if (macro > 0) {
660                                 input_report_key(inputdev,
661                                                  macroKeyEvents[macro - 1], 0);
662                         }
663                         if (macro < 25) {
664                                 input_report_key(inputdev,
665                                                  macroKeyEvents[macro + 1], 0);
666                         }
667                         input_report_key(inputdev, macroKeyEvents[macro], p);
668                         input_report_abs(inputdev, ABS_MISC,
669                                          p | AIPTEK_REPORT_TOOL_STYLUS);
670                         input_sync(inputdev);
671                 }
672         }
673         /* Report 5s come from the macro keys when pressed by mouse
674          */
675         else if (data[0] == 5) {
676                 jitterable = data[1] & 0x1c;
677
678                 p = (data[1] & 0x01) != 0 ? 1 : 0;
679                 dv = (data[1] & 0x02) != 0 ? 1 : 0;
680                 left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
681                 right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
682                 middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
683                 macro = data[3];
684
685                 if (dv != 0) {
686                         input_regs(inputdev, regs);
687
688                         /* If we've not already sent a tool_button_?? code, do
689                          * so now. Then set FIRED_BIT so it won't be resent unless
690                          * the user forces FIRED_BIT off.
691                          */
692                         if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
693                                 input_report_key(inputdev,
694                                                  TOOL_BUTTON(aiptek->curSetting.toolMode),
695                                                  1);
696                                 aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
697                         }
698
699                         if (p != 0) {
700                                 input_report_key(inputdev, BTN_LEFT, left);
701                                 input_report_key(inputdev, BTN_MIDDLE, middle);
702                                 input_report_key(inputdev, BTN_RIGHT, right);
703                         }
704
705                         /* For safety, we're sending key 'break' codes for the
706                          * neighboring macro keys.
707                          */
708                         if (macro > 0) {
709                                 input_report_key(inputdev,
710                                                  macroKeyEvents[macro - 1], 0);
711                         }
712                         if (macro < 25) {
713                                 input_report_key(inputdev,
714                                                  macroKeyEvents[macro + 1], 0);
715                         }
716
717                         input_report_key(inputdev, macroKeyEvents[macro], 1);
718                         input_report_rel(inputdev, ABS_MISC,
719                                          p | AIPTEK_REPORT_TOOL_MOUSE);
720                         input_sync(inputdev);
721                 }
722         }
723         /* We have no idea which tool can generate a report 6. Theoretically,
724          * neither need to, having been given reports 4 & 5 for such use.
725          * However, report 6 is the 'official-looking' report for macroKeys;
726          * reports 4 & 5 supposively are used to support unnamed, unknown
727          * hat switches (which just so happen to be the macroKeys.)
728          */
729         else if (data[0] == 6) {
730                 macro = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
731                 input_regs(inputdev, regs);
732
733                 if (macro > 0) {
734                         input_report_key(inputdev, macroKeyEvents[macro - 1],
735                                          0);
736                 }
737                 if (macro < 25) {
738                         input_report_key(inputdev, macroKeyEvents[macro + 1],
739                                          0);
740                 }
741
742                 /* If we've not already sent a tool_button_?? code, do
743                  * so now. Then set FIRED_BIT so it won't be resent unless
744                  * the user forces FIRED_BIT off.
745                  */
746                 if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
747                         input_report_key(inputdev,
748                                          TOOL_BUTTON(aiptek->curSetting.
749                                                      toolMode), 1);
750                         aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
751                 }
752
753                 input_report_key(inputdev, macroKeyEvents[macro], 1);
754                 input_report_abs(inputdev, ABS_MISC,
755                                  1 | AIPTEK_REPORT_TOOL_UNKNOWN);
756                 input_sync(inputdev);
757         } else {
758                 dbg("Unknown report %d", data[0]);
759         }
760
761         /* Jitter may occur when the user presses a button on the stlyus
762          * or the mouse. What we do to prevent that is wait 'x' milliseconds
763          * following a 'jitterable' event, which should give the hand some time
764          * stabilize itself.
765          *
766          * We just introduced aiptek->previousJitterable to carry forth the
767          * notion that jitter occurs when the button state changes from on to off:
768          * a person drawing, holding a button down is not subject to jittering.
769          * With that in mind, changing from upper button depressed to lower button
770          * WILL transition through a jitter delay.
771          */
772
773         if (aiptek->previousJitterable != jitterable &&
774             aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
775                 aiptek->endDelay = jiffies +
776                     ((aiptek->curSetting.jitterDelay * HZ) / 1000);
777                 aiptek->inDelay = 1;
778         }
779         aiptek->previousJitterable = jitterable;
780
781 exit:
782         retval = usb_submit_urb(urb, GFP_ATOMIC);
783         if (retval != 0) {
784                 err("%s - usb_submit_urb failed with result %d",
785                     __FUNCTION__, retval);
786         }
787 }
788
789 /***********************************************************************
790  * These are the USB id's known so far. We do not identify them to
791  * specific Aiptek model numbers, because there has been overlaps,
792  * use, and reuse of id's in existing models. Certain models have
793  * been known to use more than one ID, indicative perhaps of
794  * manufacturing revisions. In any event, we consider these 
795  * IDs to not be model-specific nor unique.
796  */
797 static const struct usb_device_id aiptek_ids[] = {
798         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
799         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
800         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
801         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
802         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
803         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
804         {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
805         {}
806 };
807
808 MODULE_DEVICE_TABLE(usb, aiptek_ids);
809
810 /***********************************************************************
811  * Open an instance of the tablet driver.
812  */
813 static int aiptek_open(struct input_dev *inputdev)
814 {
815         struct aiptek *aiptek = inputdev->private;
816
817         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         aiptek->inputdev.dev = &intf->dev;
2142
2143         aiptek->usbdev = usbdev;
2144         aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
2145         aiptek->inDelay = 0;
2146         aiptek->endDelay = 0;
2147         aiptek->previousJitterable = 0;
2148
2149         endpoint = &intf->altsetting[0].endpoint[0].desc;
2150
2151         /* Go set up our URB, which is called when the tablet receives
2152          * input.
2153          */
2154         usb_fill_int_urb(aiptek->urb,
2155                          aiptek->usbdev,
2156                          usb_rcvintpipe(aiptek->usbdev,
2157                                         endpoint->bEndpointAddress),
2158                          aiptek->data, 8, aiptek_irq, aiptek,
2159                          endpoint->bInterval);
2160
2161         aiptek->urb->transfer_dma = aiptek->data_dma;
2162         aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2163
2164         /* Register the tablet as an Input Device
2165          */
2166         input_register_device(&aiptek->inputdev);
2167
2168         /* We now will look for the evdev device which is mapped to
2169          * the tablet. The partial name is kept in the link list of
2170          * input_handles associated with this input device.
2171          * What identifies an evdev input_handler is that it begins
2172          * with 'event', continues with a digit, and that in turn
2173          * is mapped to /{devfs}/input/eventN.
2174          */
2175         inputdev = &aiptek->inputdev;
2176         list_for_each_safe(node, next, &inputdev->h_list) {
2177                 inputhandle = to_handle(node);
2178                 if (strncmp(inputhandle->name, "event", 5) == 0) {
2179                         strcpy(aiptek->features.inputPath, inputhandle->name);
2180                         break;
2181                 }
2182         }
2183
2184         info("input: Aiptek on %s (%s)\n", path, aiptek->features.inputPath);
2185
2186         /* Program the tablet. This sets the tablet up in the mode
2187          * specified in newSetting, and also queries the tablet's
2188          * physical capacities.
2189          *
2190          * Sanity check: if a tablet doesn't like the slow programmatic
2191          * delay, we often get sizes of 0x0. Let's use that as an indicator
2192          * to try faster delays, up to 25 ms. If that logic fails, well, you'll
2193          * have to explain to us how your tablet thinks it's 0x0, and yet that's
2194          * not an error :-)
2195          */
2196
2197         for (i = 0; i < sizeof(speeds) / sizeof(speeds[0]); ++i) {
2198                 aiptek->curSetting.programmableDelay = speeds[i];
2199                 (void)aiptek_program_tablet(aiptek);
2200                 if (aiptek->inputdev.absmax[ABS_X] > 0) {
2201                         info("input: Aiptek using %d ms programming speed\n",
2202                              aiptek->curSetting.programmableDelay);
2203                         break;
2204                 }
2205         }
2206
2207         /* Associate this driver's struct with the usb interface.
2208          */
2209         usb_set_intfdata(intf, aiptek);
2210
2211         /* Set up the sysfs files
2212          */
2213         aiptek_add_files(&intf->dev);
2214
2215         /* Make sure the evdev module is loaded. Assuming evdev IS a module :-)
2216          */
2217         if (request_module("evdev") != 0)
2218                 info("aiptek: error loading 'evdev' module");
2219
2220         return 0;
2221 }
2222
2223 /* Forward declaration */
2224 static void aiptek_disconnect(struct usb_interface *intf);
2225
2226 static struct usb_driver aiptek_driver = {
2227         .owner = THIS_MODULE,
2228         .name = "aiptek",
2229         .probe = aiptek_probe,
2230         .disconnect = aiptek_disconnect,
2231         .id_table = aiptek_ids,
2232 };
2233
2234 /***********************************************************************
2235  * Deal with tablet disconnecting from the system.
2236  */
2237 static void aiptek_disconnect(struct usb_interface *intf)
2238 {
2239         struct aiptek *aiptek = usb_get_intfdata(intf);
2240
2241         /* Disassociate driver's struct with usb interface
2242          */
2243         usb_set_intfdata(intf, NULL);
2244         if (aiptek != NULL) {
2245                 /* Free & unhook everything from the system.
2246                  */
2247                 usb_kill_urb(aiptek->urb);
2248                 input_unregister_device(&aiptek->inputdev);
2249                 aiptek_delete_files(&intf->dev);
2250                 usb_free_urb(aiptek->urb);
2251                 usb_buffer_free(interface_to_usbdev(intf),
2252                                 AIPTEK_PACKET_LENGTH,
2253                                 aiptek->data, aiptek->data_dma);
2254                 kfree(aiptek);
2255                 aiptek = NULL;
2256         }
2257 }
2258
2259 static int __init aiptek_init(void)
2260 {
2261         int result = usb_register(&aiptek_driver);
2262         if (result == 0) {
2263                 info(DRIVER_VERSION ": " DRIVER_AUTHOR);
2264                 info(DRIVER_DESC);
2265         }
2266         return result;
2267 }
2268
2269 static void __exit aiptek_exit(void)
2270 {
2271         usb_deregister(&aiptek_driver);
2272 }
2273
2274 MODULE_AUTHOR(DRIVER_AUTHOR);
2275 MODULE_DESCRIPTION(DRIVER_DESC);
2276 MODULE_LICENSE("GPL");
2277
2278 module_param(programmableDelay, int, 0);
2279 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
2280 module_param(jitterDelay, int, 0);
2281 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
2282
2283 module_init(aiptek_init);
2284 module_exit(aiptek_exit);