xref: /openbmc/linux/drivers/input/tablet/aiptek.c (revision ae213c44)
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/module.h>
77 #include <linux/usb/input.h>
78 #include <linux/uaccess.h>
79 #include <asm/unaligned.h>
80 
81 /*
82  * Aiptek status packet:
83  *
84  * (returned as Report 1 - relative coordinates from mouse and stylus)
85  *
86  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
87  * byte0   0     0     0     0     0     0     0     1
88  * byte1   0     0     0     0     0    BS2   BS    Tip
89  * byte2  X7    X6    X5    X4    X3    X2    X1    X0
90  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
91  *
92  * (returned as Report 2 - absolute coordinates from the stylus)
93  *
94  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
95  * byte0   0     0     0     0     0     0     1     0
96  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
97  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
98  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
99  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
100  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
101  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
102  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
103  *
104  * (returned as Report 3 - absolute coordinates from the mouse)
105  *
106  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
107  * byte0   0     0     0     0     0     0     1     1
108  * byte1  X7    X6    X5    X4    X3    X2    X1    X0
109  * byte2  X15   X14   X13   X12   X11   X10   X9    X8
110  * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
111  * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
112  * byte5   *     *     *    BS2   BS1   Tip   IR    DV
113  * byte6  P7    P6    P5    P4    P3    P2    P1    P0
114  * byte7  P15   P14   P13   P12   P11   P10   P9    P8
115  *
116  * (returned as Report 4 - macrokeys from the stylus)
117  *
118  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
119  * byte0   0     0     0     0     0     1     0     0
120  * byte1   0     0     0    BS2   BS    Tip   IR    DV
121  * byte2   0     0     0     0     0     0     1     0
122  * byte3   0     0     0    K4    K3    K2    K1    K0
123  * byte4  P7    P6    P5    P4    P3    P2    P1    P0
124  * byte5  P15   P14   P13   P12   P11   P10   P9    P8
125  *
126  * (returned as Report 5 - macrokeys from the mouse)
127  *
128  *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
129  * byte0   0     0     0     0     0     1     0     1
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  * IR: In Range = Proximity on
137  * DV = Data Valid
138  * BS = Barrel Switch (as in, macro keys)
139  * BS2 also referred to as Tablet Pick
140  *
141  * Command Summary:
142  *
143  * Use report_type CONTROL (3)
144  * Use report_id   2
145  *
146  * Command/Data    Description     Return Bytes    Return Value
147  * 0x10/0x00       SwitchToMouse       0
148  * 0x10/0x01       SwitchToTablet      0
149  * 0x18/0x04       SetResolution       0
150  * 0x12/0xFF       AutoGainOn          0
151  * 0x17/0x00       FilterOn            0
152  * 0x01/0x00       GetXExtension       2           MaxX
153  * 0x01/0x01       GetYExtension       2           MaxY
154  * 0x02/0x00       GetModelCode        2           ModelCode = LOBYTE
155  * 0x03/0x00       GetODMCode          2           ODMCode
156  * 0x08/0x00       GetPressureLevels   2           =512
157  * 0x04/0x00       GetFirmwareVersion  2           Firmware Version
158  * 0x11/0x02       EnableMacroKeys     0
159  *
160  * To initialize the tablet:
161  *
162  * (1) Send Resolution500LPI (Command)
163  * (2) Query for Model code (Option Report)
164  * (3) Query for ODM code (Option Report)
165  * (4) Query for firmware (Option Report)
166  * (5) Query for GetXExtension (Option Report)
167  * (6) Query for GetYExtension (Option Report)
168  * (7) Query for GetPressureLevels (Option Report)
169  * (8) SwitchToTablet for Absolute coordinates, or
170  *     SwitchToMouse for Relative coordinates (Command)
171  * (9) EnableMacroKeys (Command)
172  * (10) FilterOn (Command)
173  * (11) AutoGainOn (Command)
174  *
175  * (Step 9 can be omitted, but you'll then have no function keys.)
176  */
177 
178 #define USB_VENDOR_ID_AIPTEK				0x08ca
179 #define USB_VENDOR_ID_KYE				0x0458
180 #define USB_REQ_GET_REPORT				0x01
181 #define USB_REQ_SET_REPORT				0x09
182 
183 	/* PointerMode codes
184 	 */
185 #define AIPTEK_POINTER_ONLY_MOUSE_MODE			0
186 #define AIPTEK_POINTER_ONLY_STYLUS_MODE			1
187 #define AIPTEK_POINTER_EITHER_MODE			2
188 
189 #define AIPTEK_POINTER_ALLOW_MOUSE_MODE(a)		\
190 	(a == AIPTEK_POINTER_ONLY_MOUSE_MODE ||		\
191 	 a == AIPTEK_POINTER_EITHER_MODE)
192 #define AIPTEK_POINTER_ALLOW_STYLUS_MODE(a)		\
193 	(a == AIPTEK_POINTER_ONLY_STYLUS_MODE ||	\
194 	 a == AIPTEK_POINTER_EITHER_MODE)
195 
196 	/* CoordinateMode code
197 	 */
198 #define AIPTEK_COORDINATE_RELATIVE_MODE			0
199 #define AIPTEK_COORDINATE_ABSOLUTE_MODE			1
200 
201        /* XTilt and YTilt values
202         */
203 #define AIPTEK_TILT_MIN					(-128)
204 #define AIPTEK_TILT_MAX					127
205 #define AIPTEK_TILT_DISABLE				(-10101)
206 
207 	/* Wheel values
208 	 */
209 #define AIPTEK_WHEEL_MIN				0
210 #define AIPTEK_WHEEL_MAX				1024
211 #define AIPTEK_WHEEL_DISABLE				(-10101)
212 
213 	/* ToolCode values, which BTW are 0x140 .. 0x14f
214 	 * We have things set up such that if the tool button has changed,
215 	 * the tools get reset.
216 	 */
217 	/* toolMode codes
218 	 */
219 #define AIPTEK_TOOL_BUTTON_PEN_MODE			BTN_TOOL_PEN
220 #define AIPTEK_TOOL_BUTTON_PENCIL_MODE			BTN_TOOL_PENCIL
221 #define AIPTEK_TOOL_BUTTON_BRUSH_MODE			BTN_TOOL_BRUSH
222 #define AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE		BTN_TOOL_AIRBRUSH
223 #define AIPTEK_TOOL_BUTTON_ERASER_MODE			BTN_TOOL_RUBBER
224 #define AIPTEK_TOOL_BUTTON_MOUSE_MODE			BTN_TOOL_MOUSE
225 #define AIPTEK_TOOL_BUTTON_LENS_MODE			BTN_TOOL_LENS
226 
227 	/* Diagnostic message codes
228 	 */
229 #define AIPTEK_DIAGNOSTIC_NA				0
230 #define AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE	1
231 #define AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE	2
232 #define AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED		3
233 
234 	/* Time to wait (in ms) to help mask hand jittering
235 	 * when pressing the stylus buttons.
236 	 */
237 #define AIPTEK_JITTER_DELAY_DEFAULT			50
238 
239 	/* Time to wait (in ms) in-between sending the tablet
240 	 * a command and beginning the process of reading the return
241 	 * sequence from the tablet.
242 	 */
243 #define AIPTEK_PROGRAMMABLE_DELAY_25		25
244 #define AIPTEK_PROGRAMMABLE_DELAY_50		50
245 #define AIPTEK_PROGRAMMABLE_DELAY_100		100
246 #define AIPTEK_PROGRAMMABLE_DELAY_200		200
247 #define AIPTEK_PROGRAMMABLE_DELAY_300		300
248 #define AIPTEK_PROGRAMMABLE_DELAY_400		400
249 #define AIPTEK_PROGRAMMABLE_DELAY_DEFAULT	AIPTEK_PROGRAMMABLE_DELAY_400
250 
251 	/* Mouse button programming
252 	 */
253 #define AIPTEK_MOUSE_LEFT_BUTTON		0x04
254 #define AIPTEK_MOUSE_RIGHT_BUTTON		0x08
255 #define AIPTEK_MOUSE_MIDDLE_BUTTON		0x10
256 
257 	/* Stylus button programming
258 	 */
259 #define AIPTEK_STYLUS_LOWER_BUTTON		0x08
260 #define AIPTEK_STYLUS_UPPER_BUTTON		0x10
261 
262 	/* Length of incoming packet from the tablet
263 	 */
264 #define AIPTEK_PACKET_LENGTH			8
265 
266 	/* We report in EV_MISC both the proximity and
267 	 * whether the report came from the stylus, tablet mouse
268 	 * or "unknown" -- Unknown when the tablet is in relative
269 	 * mode, because we only get report 1's.
270 	 */
271 #define AIPTEK_REPORT_TOOL_UNKNOWN		0x10
272 #define AIPTEK_REPORT_TOOL_STYLUS		0x20
273 #define AIPTEK_REPORT_TOOL_MOUSE		0x40
274 
275 static int programmableDelay = AIPTEK_PROGRAMMABLE_DELAY_DEFAULT;
276 static int jitterDelay = AIPTEK_JITTER_DELAY_DEFAULT;
277 
278 struct aiptek_features {
279 	int odmCode;		/* Tablet manufacturer code       */
280 	int modelCode;		/* Tablet model code (not unique) */
281 	int firmwareCode;	/* prom/eeprom version            */
282 	char usbPath[64 + 1];	/* device's physical usb path     */
283 };
284 
285 struct aiptek_settings {
286 	int pointerMode;	/* stylus-, mouse-only or either */
287 	int coordinateMode;	/* absolute/relative coords      */
288 	int toolMode;		/* pen, pencil, brush, etc. tool */
289 	int xTilt;		/* synthetic xTilt amount        */
290 	int yTilt;		/* synthetic yTilt amount        */
291 	int wheel;		/* synthetic wheel amount        */
292 	int stylusButtonUpper;	/* stylus upper btn delivers...  */
293 	int stylusButtonLower;	/* stylus lower btn delivers...  */
294 	int mouseButtonLeft;	/* mouse left btn delivers...    */
295 	int mouseButtonMiddle;	/* mouse middle btn delivers...  */
296 	int mouseButtonRight;	/* mouse right btn delivers...   */
297 	int programmableDelay;	/* delay for tablet programming  */
298 	int jitterDelay;	/* delay for hand jittering      */
299 };
300 
301 struct aiptek {
302 	struct input_dev *inputdev;		/* input device struct           */
303 	struct usb_interface *intf;		/* usb interface struct          */
304 	struct urb *urb;			/* urb for incoming reports      */
305 	dma_addr_t data_dma;			/* our dma stuffage              */
306 	struct aiptek_features features;	/* tablet's array of features    */
307 	struct aiptek_settings curSetting;	/* tablet's current programmable */
308 	struct aiptek_settings newSetting;	/* ... and new param settings    */
309 	unsigned int ifnum;			/* interface number for IO       */
310 	int diagnostic;				/* tablet diagnostic codes       */
311 	unsigned long eventCount;		/* event count                   */
312 	int inDelay;				/* jitter: in jitter delay?      */
313 	unsigned long endDelay;			/* jitter: time when delay ends  */
314 	int previousJitterable;			/* jitterable prev value     */
315 
316 	int lastMacro;				/* macro key to reset            */
317 	int previousToolMode;			/* pen, pencil, brush, etc. tool */
318 	unsigned char *data;			/* incoming packet data          */
319 };
320 
321 static const int eventTypes[] = {
322         EV_KEY, EV_ABS, EV_REL, EV_MSC,
323 };
324 
325 static const int absEvents[] = {
326         ABS_X, ABS_Y, ABS_PRESSURE, ABS_TILT_X, ABS_TILT_Y,
327         ABS_WHEEL, ABS_MISC,
328 };
329 
330 static const int relEvents[] = {
331         REL_X, REL_Y, REL_WHEEL,
332 };
333 
334 static const int buttonEvents[] = {
335 	BTN_LEFT, BTN_RIGHT, BTN_MIDDLE,
336 	BTN_TOOL_PEN, BTN_TOOL_RUBBER, BTN_TOOL_PENCIL, BTN_TOOL_AIRBRUSH,
337 	BTN_TOOL_BRUSH, BTN_TOOL_MOUSE, BTN_TOOL_LENS, BTN_TOUCH,
338 	BTN_STYLUS, BTN_STYLUS2,
339 };
340 
341 /*
342  * Permit easy lookup of keyboard events to send, versus
343  * the bitmap which comes from the tablet. This hides the
344  * issue that the F_keys are not sequentially numbered.
345  */
346 static const int macroKeyEvents[] = {
347 	KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
348 	KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
349 	KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
350 	KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
351 	KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
352 	KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
353 };
354 
355 /***********************************************************************
356  * Map values to strings and back. Every map should have the following
357  * as its last element: { NULL, AIPTEK_INVALID_VALUE }.
358  */
359 #define AIPTEK_INVALID_VALUE	-1
360 
361 struct aiptek_map {
362 	const char *string;
363 	int value;
364 };
365 
366 static int map_str_to_val(const struct aiptek_map *map, const char *str, size_t count)
367 {
368 	const struct aiptek_map *p;
369 
370 	if (str[count - 1] == '\n')
371 		count--;
372 
373 	for (p = map; p->string; p++)
374 	        if (!strncmp(str, p->string, count))
375 			return p->value;
376 
377 	return AIPTEK_INVALID_VALUE;
378 }
379 
380 static const char *map_val_to_str(const struct aiptek_map *map, int val)
381 {
382 	const struct aiptek_map *p;
383 
384 	for (p = map; p->value != AIPTEK_INVALID_VALUE; p++)
385 		if (val == p->value)
386 			return p->string;
387 
388 	return "unknown";
389 }
390 
391 /***********************************************************************
392  * aiptek_irq can receive one of six potential reports.
393  * The documentation for each is in the body of the function.
394  *
395  * The tablet reports on several attributes per invocation of
396  * aiptek_irq. Because the Linux Input Event system allows the
397  * transmission of ONE attribute per input_report_xxx() call,
398  * collation has to be done on the other end to reconstitute
399  * a complete tablet report. Further, the number of Input Event reports
400  * submitted varies, depending on what USB report type, and circumstance.
401  * To deal with this, EV_MSC is used to indicate an 'end-of-report'
402  * message. This has been an undocumented convention understood by the kernel
403  * tablet driver and clients such as gpm and XFree86's tablet drivers.
404  *
405  * Of the information received from the tablet, the one piece I
406  * cannot transmit is the proximity bit (without resorting to an EV_MSC
407  * convention above.) I therefore have taken over REL_MISC and ABS_MISC
408  * (for relative and absolute reports, respectively) for communicating
409  * Proximity. Why two events? I thought it interesting to know if the
410  * Proximity event occurred while the tablet was in absolute or relative
411  * mode.
412  * Update: REL_MISC proved not to be such a good idea. With REL_MISC you
413  * get an event transmitted each time. ABS_MISC works better, since it
414  * can be set and re-set. Thus, only using ABS_MISC from now on.
415  *
416  * Other tablets use the notion of a certain minimum stylus pressure
417  * to infer proximity. While that could have been done, that is yet
418  * another 'by convention' behavior, the documentation for which
419  * would be spread between two (or more) pieces of software.
420  *
421  * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and
422  * replaced with the input_sync() method (which emits EV_SYN.)
423  */
424 
425 static void aiptek_irq(struct urb *urb)
426 {
427 	struct aiptek *aiptek = urb->context;
428 	unsigned char *data = aiptek->data;
429 	struct input_dev *inputdev = aiptek->inputdev;
430 	struct usb_interface *intf = aiptek->intf;
431 	int jitterable = 0;
432 	int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck;
433 
434 	switch (urb->status) {
435 	case 0:
436 		/* Success */
437 		break;
438 
439 	case -ECONNRESET:
440 	case -ENOENT:
441 	case -ESHUTDOWN:
442 		/* This urb is terminated, clean up */
443 		dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
444 			__func__, urb->status);
445 		return;
446 
447 	default:
448 		dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
449 			__func__, urb->status);
450 		goto exit;
451 	}
452 
453 	/* See if we are in a delay loop -- throw out report if true.
454 	 */
455 	if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) {
456 		goto exit;
457 	}
458 
459 	aiptek->inDelay = 0;
460 	aiptek->eventCount++;
461 
462 	/* Report 1 delivers relative coordinates with either a stylus
463 	 * or the mouse. You do not know, however, which input
464 	 * tool generated the event.
465 	 */
466 	if (data[0] == 1) {
467 		if (aiptek->curSetting.coordinateMode ==
468 		    AIPTEK_COORDINATE_ABSOLUTE_MODE) {
469 			aiptek->diagnostic =
470 			    AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
471 		} else {
472 			x = (signed char) data[2];
473 			y = (signed char) data[3];
474 
475 			/* jitterable keeps track of whether any button has been pressed.
476 			 * We're also using it to remap the physical mouse button mask
477 			 * to pseudo-settings. (We don't specifically care about it's
478 			 * value after moving/transposing mouse button bitmasks, except
479 			 * that a non-zero value indicates that one or more
480 			 * mouse button was pressed.)
481 			 */
482 			jitterable = data[1] & 0x07;
483 
484 			left = (data[1] & aiptek->curSetting.mouseButtonLeft >> 2) != 0 ? 1 : 0;
485 			right = (data[1] & aiptek->curSetting.mouseButtonRight >> 2) != 0 ? 1 : 0;
486 			middle = (data[1] & aiptek->curSetting.mouseButtonMiddle >> 2) != 0 ? 1 : 0;
487 
488 			input_report_key(inputdev, BTN_LEFT, left);
489 			input_report_key(inputdev, BTN_MIDDLE, middle);
490 			input_report_key(inputdev, BTN_RIGHT, right);
491 
492 			input_report_abs(inputdev, ABS_MISC,
493 					 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
494 			input_report_rel(inputdev, REL_X, x);
495 			input_report_rel(inputdev, REL_Y, y);
496 
497 			/* Wheel support is in the form of a single-event
498 			 * firing.
499 			 */
500 			if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
501 				input_report_rel(inputdev, REL_WHEEL,
502 						 aiptek->curSetting.wheel);
503 				aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
504 			}
505 			if (aiptek->lastMacro != -1) {
506 			        input_report_key(inputdev,
507 						 macroKeyEvents[aiptek->lastMacro], 0);
508 				aiptek->lastMacro = -1;
509 			}
510 			input_sync(inputdev);
511 		}
512 	}
513 	/* Report 2 is delivered only by the stylus, and delivers
514 	 * absolute coordinates.
515 	 */
516 	else if (data[0] == 2) {
517 		if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
518 			aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
519 		} else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE
520 			    (aiptek->curSetting.pointerMode)) {
521 				aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
522 		} else {
523 			x = get_unaligned_le16(data + 1);
524 			y = get_unaligned_le16(data + 3);
525 			z = get_unaligned_le16(data + 6);
526 
527 			dv = (data[5] & 0x01) != 0 ? 1 : 0;
528 			p = (data[5] & 0x02) != 0 ? 1 : 0;
529 			tip = (data[5] & 0x04) != 0 ? 1 : 0;
530 
531 			/* Use jitterable to re-arrange button masks
532 			 */
533 			jitterable = data[5] & 0x18;
534 
535 			bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
536 			pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
537 
538 			/* dv indicates 'data valid' (e.g., the tablet is in sync
539 			 * and has delivered a "correct" report) We will ignore
540 			 * all 'bad' reports...
541 			 */
542 			if (dv != 0) {
543 				/* If the selected tool changed, reset the old
544 				 * tool key, and set the new one.
545 				 */
546 				if (aiptek->previousToolMode !=
547 				    aiptek->curSetting.toolMode) {
548 				        input_report_key(inputdev,
549 							 aiptek->previousToolMode, 0);
550 					input_report_key(inputdev,
551 							 aiptek->curSetting.toolMode,
552 							 1);
553 					aiptek->previousToolMode =
554 					          aiptek->curSetting.toolMode;
555 				}
556 
557 				if (p != 0) {
558 					input_report_abs(inputdev, ABS_X, x);
559 					input_report_abs(inputdev, ABS_Y, y);
560 					input_report_abs(inputdev, ABS_PRESSURE, z);
561 
562 					input_report_key(inputdev, BTN_TOUCH, tip);
563 					input_report_key(inputdev, BTN_STYLUS, bs);
564 					input_report_key(inputdev, BTN_STYLUS2, pck);
565 
566 					if (aiptek->curSetting.xTilt !=
567 					    AIPTEK_TILT_DISABLE) {
568 						input_report_abs(inputdev,
569 								 ABS_TILT_X,
570 								 aiptek->curSetting.xTilt);
571 					}
572 					if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) {
573 						input_report_abs(inputdev,
574 								 ABS_TILT_Y,
575 								 aiptek->curSetting.yTilt);
576 					}
577 
578 					/* Wheel support is in the form of a single-event
579 					 * firing.
580 					 */
581 					if (aiptek->curSetting.wheel !=
582 					    AIPTEK_WHEEL_DISABLE) {
583 						input_report_abs(inputdev,
584 								 ABS_WHEEL,
585 								 aiptek->curSetting.wheel);
586 						aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
587 					}
588 				}
589 				input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS);
590 				if (aiptek->lastMacro != -1) {
591 			                input_report_key(inputdev,
592 							 macroKeyEvents[aiptek->lastMacro], 0);
593 					aiptek->lastMacro = -1;
594 				}
595 				input_sync(inputdev);
596 			}
597 		}
598 	}
599 	/* Report 3's come from the mouse in absolute mode.
600 	 */
601 	else if (data[0] == 3) {
602 		if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) {
603 			aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE;
604 		} else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE
605 			(aiptek->curSetting.pointerMode)) {
606 			aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED;
607 		} else {
608 			x = get_unaligned_le16(data + 1);
609 			y = get_unaligned_le16(data + 3);
610 
611 			jitterable = data[5] & 0x1c;
612 
613 			dv = (data[5] & 0x01) != 0 ? 1 : 0;
614 			p = (data[5] & 0x02) != 0 ? 1 : 0;
615 			left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
616 			right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
617 			middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
618 
619 			if (dv != 0) {
620 				/* If the selected tool changed, reset the old
621 				 * tool key, and set the new one.
622 				 */
623 				if (aiptek->previousToolMode !=
624 				    aiptek->curSetting.toolMode) {
625 				        input_report_key(inputdev,
626 							 aiptek->previousToolMode, 0);
627 					input_report_key(inputdev,
628 							 aiptek->curSetting.toolMode,
629 							 1);
630 					aiptek->previousToolMode =
631 					          aiptek->curSetting.toolMode;
632 				}
633 
634 				if (p != 0) {
635 					input_report_abs(inputdev, ABS_X, x);
636 					input_report_abs(inputdev, ABS_Y, y);
637 
638 					input_report_key(inputdev, BTN_LEFT, left);
639 					input_report_key(inputdev, BTN_MIDDLE, middle);
640 					input_report_key(inputdev, BTN_RIGHT, right);
641 
642 					/* Wheel support is in the form of a single-event
643 					 * firing.
644 					 */
645 					if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) {
646 						input_report_abs(inputdev,
647 								 ABS_WHEEL,
648 								 aiptek->curSetting.wheel);
649 						aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE;
650 					}
651 				}
652 				input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
653 				if (aiptek->lastMacro != -1) {
654 			                input_report_key(inputdev,
655 							 macroKeyEvents[aiptek->lastMacro], 0);
656 				        aiptek->lastMacro = -1;
657 				}
658 				input_sync(inputdev);
659 			}
660 		}
661 	}
662 	/* Report 4s come from the macro keys when pressed by stylus
663 	 */
664 	else if (data[0] == 4) {
665 		jitterable = data[1] & 0x18;
666 
667 		dv = (data[1] & 0x01) != 0 ? 1 : 0;
668 		p = (data[1] & 0x02) != 0 ? 1 : 0;
669 		tip = (data[1] & 0x04) != 0 ? 1 : 0;
670 		bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0;
671 		pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0;
672 
673 		macro = dv && p && tip && !(data[3] & 1) ? (data[3] >> 1) : -1;
674 		z = get_unaligned_le16(data + 4);
675 
676 		if (dv) {
677 		        /* If the selected tool changed, reset the old
678 			 * tool key, and set the new one.
679 			 */
680 		        if (aiptek->previousToolMode !=
681 			    aiptek->curSetting.toolMode) {
682 			        input_report_key(inputdev,
683 						 aiptek->previousToolMode, 0);
684 				input_report_key(inputdev,
685 						 aiptek->curSetting.toolMode,
686 						 1);
687 				aiptek->previousToolMode =
688 				        aiptek->curSetting.toolMode;
689 			}
690 		}
691 
692 		if (aiptek->lastMacro != -1 && aiptek->lastMacro != macro) {
693 		        input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0);
694 			aiptek->lastMacro = -1;
695 		}
696 
697 		if (macro != -1 && macro != aiptek->lastMacro) {
698 			input_report_key(inputdev, macroKeyEvents[macro], 1);
699 			aiptek->lastMacro = macro;
700 		}
701 		input_report_abs(inputdev, ABS_MISC,
702 				 p | AIPTEK_REPORT_TOOL_STYLUS);
703 		input_sync(inputdev);
704 	}
705 	/* Report 5s come from the macro keys when pressed by mouse
706 	 */
707 	else if (data[0] == 5) {
708 		jitterable = data[1] & 0x1c;
709 
710 		dv = (data[1] & 0x01) != 0 ? 1 : 0;
711 		p = (data[1] & 0x02) != 0 ? 1 : 0;
712 		left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0;
713 		right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0;
714 		middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0;
715 		macro = dv && p && left && !(data[3] & 1) ? (data[3] >> 1) : 0;
716 
717 		if (dv) {
718 		        /* If the selected tool changed, reset the old
719 			 * tool key, and set the new one.
720 			 */
721 		        if (aiptek->previousToolMode !=
722 			    aiptek->curSetting.toolMode) {
723 		                input_report_key(inputdev,
724 						 aiptek->previousToolMode, 0);
725 			        input_report_key(inputdev,
726 						 aiptek->curSetting.toolMode, 1);
727 			        aiptek->previousToolMode = aiptek->curSetting.toolMode;
728 			}
729 		}
730 
731 		if (aiptek->lastMacro != -1 && aiptek->lastMacro != macro) {
732 		        input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0);
733 			aiptek->lastMacro = -1;
734 		}
735 
736 		if (macro != -1 && macro != aiptek->lastMacro) {
737 			input_report_key(inputdev, macroKeyEvents[macro], 1);
738 			aiptek->lastMacro = macro;
739 		}
740 
741 		input_report_abs(inputdev, ABS_MISC,
742 				 p | AIPTEK_REPORT_TOOL_MOUSE);
743 		input_sync(inputdev);
744 	}
745 	/* We have no idea which tool can generate a report 6. Theoretically,
746 	 * neither need to, having been given reports 4 & 5 for such use.
747 	 * However, report 6 is the 'official-looking' report for macroKeys;
748 	 * reports 4 & 5 supposively are used to support unnamed, unknown
749 	 * hat switches (which just so happen to be the macroKeys.)
750 	 */
751 	else if (data[0] == 6) {
752 		macro = get_unaligned_le16(data + 1);
753 		if (macro > 0) {
754 			input_report_key(inputdev, macroKeyEvents[macro - 1],
755 					 0);
756 		}
757 		if (macro < 25) {
758 			input_report_key(inputdev, macroKeyEvents[macro + 1],
759 					 0);
760 		}
761 
762 		/* If the selected tool changed, reset the old
763 		   tool key, and set the new one.
764 		*/
765 		if (aiptek->previousToolMode !=
766 		    aiptek->curSetting.toolMode) {
767 		        input_report_key(inputdev,
768 					 aiptek->previousToolMode, 0);
769 			input_report_key(inputdev,
770 					 aiptek->curSetting.toolMode,
771 					 1);
772 			aiptek->previousToolMode =
773 				aiptek->curSetting.toolMode;
774 		}
775 
776 		input_report_key(inputdev, macroKeyEvents[macro], 1);
777 		input_report_abs(inputdev, ABS_MISC,
778 				 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
779 		input_sync(inputdev);
780 	} else {
781 		dev_dbg(&intf->dev, "Unknown report %d\n", data[0]);
782 	}
783 
784 	/* Jitter may occur when the user presses a button on the stlyus
785 	 * or the mouse. What we do to prevent that is wait 'x' milliseconds
786 	 * following a 'jitterable' event, which should give the hand some time
787 	 * stabilize itself.
788 	 *
789 	 * We just introduced aiptek->previousJitterable to carry forth the
790 	 * notion that jitter occurs when the button state changes from on to off:
791 	 * a person drawing, holding a button down is not subject to jittering.
792 	 * With that in mind, changing from upper button depressed to lower button
793 	 * WILL transition through a jitter delay.
794 	 */
795 
796 	if (aiptek->previousJitterable != jitterable &&
797 	    aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) {
798 		aiptek->endDelay = jiffies +
799 		    ((aiptek->curSetting.jitterDelay * HZ) / 1000);
800 		aiptek->inDelay = 1;
801 	}
802 	aiptek->previousJitterable = jitterable;
803 
804 exit:
805 	retval = usb_submit_urb(urb, GFP_ATOMIC);
806 	if (retval != 0) {
807 		dev_err(&intf->dev,
808 			"%s - usb_submit_urb failed with result %d\n",
809 			__func__, retval);
810 	}
811 }
812 
813 /***********************************************************************
814  * These are the USB id's known so far. We do not identify them to
815  * specific Aiptek model numbers, because there has been overlaps,
816  * use, and reuse of id's in existing models. Certain models have
817  * been known to use more than one ID, indicative perhaps of
818  * manufacturing revisions. In any event, we consider these
819  * IDs to not be model-specific nor unique.
820  */
821 static const struct usb_device_id aiptek_ids[] = {
822 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)},
823 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)},
824 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)},
825 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)},
826 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)},
827 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)},
828 	{USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)},
829 	{USB_DEVICE(USB_VENDOR_ID_KYE, 0x5003)},
830 	{}
831 };
832 
833 MODULE_DEVICE_TABLE(usb, aiptek_ids);
834 
835 /***********************************************************************
836  * Open an instance of the tablet driver.
837  */
838 static int aiptek_open(struct input_dev *inputdev)
839 {
840 	struct aiptek *aiptek = input_get_drvdata(inputdev);
841 
842 	aiptek->urb->dev = interface_to_usbdev(aiptek->intf);
843 	if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0)
844 		return -EIO;
845 
846 	return 0;
847 }
848 
849 /***********************************************************************
850  * Close an instance of the tablet driver.
851  */
852 static void aiptek_close(struct input_dev *inputdev)
853 {
854 	struct aiptek *aiptek = input_get_drvdata(inputdev);
855 
856 	usb_kill_urb(aiptek->urb);
857 }
858 
859 /***********************************************************************
860  * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
861  * where they were known as usb_set_report and usb_get_report.
862  */
863 static int
864 aiptek_set_report(struct aiptek *aiptek,
865 		  unsigned char report_type,
866 		  unsigned char report_id, void *buffer, int size)
867 {
868 	struct usb_device *udev = interface_to_usbdev(aiptek->intf);
869 
870 	return usb_control_msg(udev,
871 			       usb_sndctrlpipe(udev, 0),
872 			       USB_REQ_SET_REPORT,
873 			       USB_TYPE_CLASS | USB_RECIP_INTERFACE |
874 			       USB_DIR_OUT, (report_type << 8) + report_id,
875 			       aiptek->ifnum, buffer, size, 5000);
876 }
877 
878 static int
879 aiptek_get_report(struct aiptek *aiptek,
880 		  unsigned char report_type,
881 		  unsigned char report_id, void *buffer, int size)
882 {
883 	struct usb_device *udev = interface_to_usbdev(aiptek->intf);
884 
885 	return usb_control_msg(udev,
886 			       usb_rcvctrlpipe(udev, 0),
887 			       USB_REQ_GET_REPORT,
888 			       USB_TYPE_CLASS | USB_RECIP_INTERFACE |
889 			       USB_DIR_IN, (report_type << 8) + report_id,
890 			       aiptek->ifnum, buffer, size, 5000);
891 }
892 
893 /***********************************************************************
894  * Send a command to the tablet.
895  */
896 static int
897 aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
898 {
899 	const int sizeof_buf = 3 * sizeof(u8);
900 	int ret;
901 	u8 *buf;
902 
903 	buf = kmalloc(sizeof_buf, GFP_KERNEL);
904 	if (!buf)
905 		return -ENOMEM;
906 
907 	buf[0] = 2;
908 	buf[1] = command;
909 	buf[2] = data;
910 
911 	if ((ret =
912 	     aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
913 		dev_dbg(&aiptek->intf->dev,
914 			"aiptek_program: failed, tried to send: 0x%02x 0x%02x\n",
915 			command, data);
916 	}
917 	kfree(buf);
918 	return ret < 0 ? ret : 0;
919 }
920 
921 /***********************************************************************
922  * Retrieve information from the tablet. Querying info is defined as first
923  * sending the {command,data} sequence as a command, followed by a wait
924  * (aka, "programmaticDelay") and then a "read" request.
925  */
926 static int
927 aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
928 {
929 	const int sizeof_buf = 3 * sizeof(u8);
930 	int ret;
931 	u8 *buf;
932 
933 	buf = kmalloc(sizeof_buf, GFP_KERNEL);
934 	if (!buf)
935 		return -ENOMEM;
936 
937 	buf[0] = 2;
938 	buf[1] = command;
939 	buf[2] = data;
940 
941 	if (aiptek_command(aiptek, command, data) != 0) {
942 		kfree(buf);
943 		return -EIO;
944 	}
945 	msleep(aiptek->curSetting.programmableDelay);
946 
947 	if ((ret =
948 	     aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
949 		dev_dbg(&aiptek->intf->dev,
950 			"aiptek_query failed: returned 0x%02x 0x%02x 0x%02x\n",
951 			buf[0], buf[1], buf[2]);
952 		ret = -EIO;
953 	} else {
954 		ret = get_unaligned_le16(buf + 1);
955 	}
956 	kfree(buf);
957 	return ret;
958 }
959 
960 /***********************************************************************
961  * Program the tablet into either absolute or relative mode.
962  * We also get information about the tablet's size.
963  */
964 static int aiptek_program_tablet(struct aiptek *aiptek)
965 {
966 	int ret;
967 	/* Execute Resolution500LPI */
968 	if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
969 		return ret;
970 
971 	/* Query getModelCode */
972 	if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
973 		return ret;
974 	aiptek->features.modelCode = ret & 0xff;
975 
976 	/* Query getODMCode */
977 	if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
978 		return ret;
979 	aiptek->features.odmCode = ret;
980 
981 	/* Query getFirmwareCode */
982 	if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
983 		return ret;
984 	aiptek->features.firmwareCode = ret;
985 
986 	/* Query getXextension */
987 	if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
988 		return ret;
989 	input_set_abs_params(aiptek->inputdev, ABS_X, 0, ret - 1, 0, 0);
990 
991 	/* Query getYextension */
992 	if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
993 		return ret;
994 	input_set_abs_params(aiptek->inputdev, ABS_Y, 0, ret - 1, 0, 0);
995 
996 	/* Query getPressureLevels */
997 	if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
998 		return ret;
999 	input_set_abs_params(aiptek->inputdev, ABS_PRESSURE, 0, ret - 1, 0, 0);
1000 
1001 	/* Depending on whether we are in absolute or relative mode, we will
1002 	 * do a switchToTablet(absolute) or switchToMouse(relative) command.
1003 	 */
1004 	if (aiptek->curSetting.coordinateMode ==
1005 	    AIPTEK_COORDINATE_ABSOLUTE_MODE) {
1006 		/* Execute switchToTablet */
1007 		if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
1008 			return ret;
1009 		}
1010 	} else {
1011 		/* Execute switchToMouse */
1012 		if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
1013 			return ret;
1014 		}
1015 	}
1016 
1017 	/* Enable the macro keys */
1018 	if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
1019 		return ret;
1020 #if 0
1021 	/* Execute FilterOn */
1022 	if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
1023 		return ret;
1024 #endif
1025 
1026 	/* Execute AutoGainOn */
1027 	if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
1028 		return ret;
1029 
1030 	/* Reset the eventCount, so we track events from last (re)programming
1031 	 */
1032 	aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
1033 	aiptek->eventCount = 0;
1034 
1035 	return 0;
1036 }
1037 
1038 /***********************************************************************
1039  * Sysfs functions. Sysfs prefers that individually-tunable parameters
1040  * exist in their separate pseudo-files. Summary data that is immutable
1041  * may exist in a singular file so long as you don't define a writeable
1042  * interface.
1043  */
1044 
1045 /***********************************************************************
1046  * support the 'size' file -- display support
1047  */
1048 static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
1049 {
1050 	struct aiptek *aiptek = dev_get_drvdata(dev);
1051 
1052 	return snprintf(buf, PAGE_SIZE, "%dx%d\n",
1053 			input_abs_get_max(aiptek->inputdev, ABS_X) + 1,
1054 			input_abs_get_max(aiptek->inputdev, ABS_Y) + 1);
1055 }
1056 
1057 /* These structs define the sysfs files, param #1 is the name of the
1058  * file, param 2 is the file permissions, param 3 & 4 are to the
1059  * output generator and input parser routines. Absence of a routine is
1060  * permitted -- it only means can't either 'cat' the file, or send data
1061  * to it.
1062  */
1063 static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
1064 
1065 /***********************************************************************
1066  * support routines for the 'pointer_mode' file. Note that this file
1067  * both displays current setting and allows reprogramming.
1068  */
1069 static struct aiptek_map pointer_mode_map[] = {
1070 	{ "stylus",	AIPTEK_POINTER_ONLY_STYLUS_MODE },
1071 	{ "mouse",	AIPTEK_POINTER_ONLY_MOUSE_MODE },
1072 	{ "either",	AIPTEK_POINTER_EITHER_MODE },
1073 	{ NULL,		AIPTEK_INVALID_VALUE }
1074 };
1075 
1076 static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
1077 {
1078 	struct aiptek *aiptek = dev_get_drvdata(dev);
1079 
1080 	return snprintf(buf, PAGE_SIZE, "%s\n",
1081 			map_val_to_str(pointer_mode_map,
1082 					aiptek->curSetting.pointerMode));
1083 }
1084 
1085 static ssize_t
1086 store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1087 {
1088 	struct aiptek *aiptek = dev_get_drvdata(dev);
1089 	int new_mode = map_str_to_val(pointer_mode_map, buf, count);
1090 
1091 	if (new_mode == AIPTEK_INVALID_VALUE)
1092 		return -EINVAL;
1093 
1094 	aiptek->newSetting.pointerMode = new_mode;
1095 	return count;
1096 }
1097 
1098 static DEVICE_ATTR(pointer_mode,
1099 		   S_IRUGO | S_IWUSR,
1100 		   show_tabletPointerMode, store_tabletPointerMode);
1101 
1102 /***********************************************************************
1103  * support routines for the 'coordinate_mode' file. Note that this file
1104  * both displays current setting and allows reprogramming.
1105  */
1106 
1107 static struct aiptek_map coordinate_mode_map[] = {
1108 	{ "absolute",	AIPTEK_COORDINATE_ABSOLUTE_MODE },
1109 	{ "relative",	AIPTEK_COORDINATE_RELATIVE_MODE },
1110 	{ NULL,		AIPTEK_INVALID_VALUE }
1111 };
1112 
1113 static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
1114 {
1115 	struct aiptek *aiptek = dev_get_drvdata(dev);
1116 
1117 	return snprintf(buf, PAGE_SIZE, "%s\n",
1118 			map_val_to_str(coordinate_mode_map,
1119 					aiptek->curSetting.coordinateMode));
1120 }
1121 
1122 static ssize_t
1123 store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1124 {
1125 	struct aiptek *aiptek = dev_get_drvdata(dev);
1126 	int new_mode = map_str_to_val(coordinate_mode_map, buf, count);
1127 
1128 	if (new_mode == AIPTEK_INVALID_VALUE)
1129 		return -EINVAL;
1130 
1131 	aiptek->newSetting.coordinateMode = new_mode;
1132 	return count;
1133 }
1134 
1135 static DEVICE_ATTR(coordinate_mode,
1136 		   S_IRUGO | S_IWUSR,
1137 		   show_tabletCoordinateMode, store_tabletCoordinateMode);
1138 
1139 /***********************************************************************
1140  * support routines for the 'tool_mode' file. Note that this file
1141  * both displays current setting and allows reprogramming.
1142  */
1143 
1144 static struct aiptek_map tool_mode_map[] = {
1145 	{ "mouse",	AIPTEK_TOOL_BUTTON_MOUSE_MODE },
1146 	{ "eraser",	AIPTEK_TOOL_BUTTON_ERASER_MODE },
1147 	{ "pencil",	AIPTEK_TOOL_BUTTON_PENCIL_MODE },
1148 	{ "pen",	AIPTEK_TOOL_BUTTON_PEN_MODE },
1149 	{ "brush",	AIPTEK_TOOL_BUTTON_BRUSH_MODE },
1150 	{ "airbrush",	AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE },
1151 	{ "lens",	AIPTEK_TOOL_BUTTON_LENS_MODE },
1152 	{ NULL,		AIPTEK_INVALID_VALUE }
1153 };
1154 
1155 static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
1156 {
1157 	struct aiptek *aiptek = dev_get_drvdata(dev);
1158 
1159 	return snprintf(buf, PAGE_SIZE, "%s\n",
1160 			map_val_to_str(tool_mode_map,
1161 					aiptek->curSetting.toolMode));
1162 }
1163 
1164 static ssize_t
1165 store_tabletToolMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1166 {
1167 	struct aiptek *aiptek = dev_get_drvdata(dev);
1168 	int new_mode = map_str_to_val(tool_mode_map, buf, count);
1169 
1170 	if (new_mode == AIPTEK_INVALID_VALUE)
1171 		return -EINVAL;
1172 
1173 	aiptek->newSetting.toolMode = new_mode;
1174 	return count;
1175 }
1176 
1177 static DEVICE_ATTR(tool_mode,
1178 		   S_IRUGO | S_IWUSR,
1179 		   show_tabletToolMode, store_tabletToolMode);
1180 
1181 /***********************************************************************
1182  * support routines for the 'xtilt' file. Note that this file
1183  * both displays current setting and allows reprogramming.
1184  */
1185 static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *attr, char *buf)
1186 {
1187 	struct aiptek *aiptek = dev_get_drvdata(dev);
1188 
1189 	if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
1190 		return snprintf(buf, PAGE_SIZE, "disable\n");
1191 	} else {
1192 		return snprintf(buf, PAGE_SIZE, "%d\n",
1193 				aiptek->curSetting.xTilt);
1194 	}
1195 }
1196 
1197 static ssize_t
1198 store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1199 {
1200 	struct aiptek *aiptek = dev_get_drvdata(dev);
1201 	int x;
1202 
1203 	if (kstrtoint(buf, 10, &x)) {
1204 		size_t len = buf[count - 1] == '\n' ? count - 1 : count;
1205 
1206 		if (strncmp(buf, "disable", len))
1207 			return -EINVAL;
1208 
1209 		aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
1210 	} else {
1211 		if (x < AIPTEK_TILT_MIN || x > AIPTEK_TILT_MAX)
1212 			return -EINVAL;
1213 
1214 		aiptek->newSetting.xTilt = x;
1215 	}
1216 
1217 	return count;
1218 }
1219 
1220 static DEVICE_ATTR(xtilt,
1221 		   S_IRUGO | S_IWUSR, show_tabletXtilt, store_tabletXtilt);
1222 
1223 /***********************************************************************
1224  * support routines for the 'ytilt' file. Note that this file
1225  * both displays current setting and allows reprogramming.
1226  */
1227 static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *attr, char *buf)
1228 {
1229 	struct aiptek *aiptek = dev_get_drvdata(dev);
1230 
1231 	if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
1232 		return snprintf(buf, PAGE_SIZE, "disable\n");
1233 	} else {
1234 		return snprintf(buf, PAGE_SIZE, "%d\n",
1235 				aiptek->curSetting.yTilt);
1236 	}
1237 }
1238 
1239 static ssize_t
1240 store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1241 {
1242 	struct aiptek *aiptek = dev_get_drvdata(dev);
1243 	int y;
1244 
1245 	if (kstrtoint(buf, 10, &y)) {
1246 		size_t len = buf[count - 1] == '\n' ? count - 1 : count;
1247 
1248 		if (strncmp(buf, "disable", len))
1249 			return -EINVAL;
1250 
1251 		aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
1252 	} else {
1253 		if (y < AIPTEK_TILT_MIN || y > AIPTEK_TILT_MAX)
1254 			return -EINVAL;
1255 
1256 		aiptek->newSetting.yTilt = y;
1257 	}
1258 
1259 	return count;
1260 }
1261 
1262 static DEVICE_ATTR(ytilt,
1263 		   S_IRUGO | S_IWUSR, show_tabletYtilt, store_tabletYtilt);
1264 
1265 /***********************************************************************
1266  * support routines for the 'jitter' file. Note that this file
1267  * both displays current setting and allows reprogramming.
1268  */
1269 static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribute *attr, char *buf)
1270 {
1271 	struct aiptek *aiptek = dev_get_drvdata(dev);
1272 
1273 	return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
1274 }
1275 
1276 static ssize_t
1277 store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1278 {
1279 	struct aiptek *aiptek = dev_get_drvdata(dev);
1280 	int err, j;
1281 
1282 	err = kstrtoint(buf, 10, &j);
1283 	if (err)
1284 		return err;
1285 
1286 	aiptek->newSetting.jitterDelay = j;
1287 	return count;
1288 }
1289 
1290 static DEVICE_ATTR(jitter,
1291 		   S_IRUGO | S_IWUSR,
1292 		   show_tabletJitterDelay, store_tabletJitterDelay);
1293 
1294 /***********************************************************************
1295  * support routines for the 'delay' file. Note that this file
1296  * both displays current setting and allows reprogramming.
1297  */
1298 static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, char *buf)
1299 {
1300 	struct aiptek *aiptek = dev_get_drvdata(dev);
1301 
1302 	return snprintf(buf, PAGE_SIZE, "%d\n",
1303 			aiptek->curSetting.programmableDelay);
1304 }
1305 
1306 static ssize_t
1307 store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1308 {
1309 	struct aiptek *aiptek = dev_get_drvdata(dev);
1310 	int err, d;
1311 
1312 	err = kstrtoint(buf, 10, &d);
1313 	if (err)
1314 		return err;
1315 
1316 	aiptek->newSetting.programmableDelay = d;
1317 	return count;
1318 }
1319 
1320 static DEVICE_ATTR(delay,
1321 		   S_IRUGO | S_IWUSR,
1322 		   show_tabletProgrammableDelay, store_tabletProgrammableDelay);
1323 
1324 /***********************************************************************
1325  * support routines for the 'event_count' file. Note that this file
1326  * only displays current setting.
1327  */
1328 static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attribute *attr, char *buf)
1329 {
1330 	struct aiptek *aiptek = dev_get_drvdata(dev);
1331 
1332 	return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
1333 }
1334 
1335 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
1336 
1337 /***********************************************************************
1338  * support routines for the 'diagnostic' file. Note that this file
1339  * only displays current setting.
1340  */
1341 static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_attribute *attr, char *buf)
1342 {
1343 	struct aiptek *aiptek = dev_get_drvdata(dev);
1344 	char *retMsg;
1345 
1346 	switch (aiptek->diagnostic) {
1347 	case AIPTEK_DIAGNOSTIC_NA:
1348 		retMsg = "no errors\n";
1349 		break;
1350 
1351 	case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
1352 		retMsg = "Error: receiving relative reports\n";
1353 		break;
1354 
1355 	case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
1356 		retMsg = "Error: receiving absolute reports\n";
1357 		break;
1358 
1359 	case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
1360 		if (aiptek->curSetting.pointerMode ==
1361 		    AIPTEK_POINTER_ONLY_MOUSE_MODE) {
1362 			retMsg = "Error: receiving stylus reports\n";
1363 		} else {
1364 			retMsg = "Error: receiving mouse reports\n";
1365 		}
1366 		break;
1367 
1368 	default:
1369 		return 0;
1370 	}
1371 	return snprintf(buf, PAGE_SIZE, retMsg);
1372 }
1373 
1374 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
1375 
1376 /***********************************************************************
1377  * support routines for the 'stylus_upper' file. Note that this file
1378  * both displays current setting and allows for setting changing.
1379  */
1380 
1381 static struct aiptek_map stylus_button_map[] = {
1382 	{ "upper",	AIPTEK_STYLUS_UPPER_BUTTON },
1383 	{ "lower",	AIPTEK_STYLUS_LOWER_BUTTON },
1384 	{ NULL,		AIPTEK_INVALID_VALUE }
1385 };
1386 
1387 static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
1388 {
1389 	struct aiptek *aiptek = dev_get_drvdata(dev);
1390 
1391 	return snprintf(buf, PAGE_SIZE, "%s\n",
1392 			map_val_to_str(stylus_button_map,
1393 					aiptek->curSetting.stylusButtonUpper));
1394 }
1395 
1396 static ssize_t
1397 store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1398 {
1399 	struct aiptek *aiptek = dev_get_drvdata(dev);
1400 	int new_button = map_str_to_val(stylus_button_map, buf, count);
1401 
1402 	if (new_button == AIPTEK_INVALID_VALUE)
1403 		return -EINVAL;
1404 
1405 	aiptek->newSetting.stylusButtonUpper = new_button;
1406 	return count;
1407 }
1408 
1409 static DEVICE_ATTR(stylus_upper,
1410 		   S_IRUGO | S_IWUSR,
1411 		   show_tabletStylusUpper, store_tabletStylusUpper);
1412 
1413 /***********************************************************************
1414  * support routines for the 'stylus_lower' file. Note that this file
1415  * both displays current setting and allows for setting changing.
1416  */
1417 
1418 static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribute *attr, char *buf)
1419 {
1420 	struct aiptek *aiptek = dev_get_drvdata(dev);
1421 
1422 	return snprintf(buf, PAGE_SIZE, "%s\n",
1423 			map_val_to_str(stylus_button_map,
1424 					aiptek->curSetting.stylusButtonLower));
1425 }
1426 
1427 static ssize_t
1428 store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1429 {
1430 	struct aiptek *aiptek = dev_get_drvdata(dev);
1431 	int new_button = map_str_to_val(stylus_button_map, buf, count);
1432 
1433 	if (new_button == AIPTEK_INVALID_VALUE)
1434 		return -EINVAL;
1435 
1436 	aiptek->newSetting.stylusButtonLower = new_button;
1437 	return count;
1438 }
1439 
1440 static DEVICE_ATTR(stylus_lower,
1441 		   S_IRUGO | S_IWUSR,
1442 		   show_tabletStylusLower, store_tabletStylusLower);
1443 
1444 /***********************************************************************
1445  * support routines for the 'mouse_left' file. Note that this file
1446  * both displays current setting and allows for setting changing.
1447  */
1448 
1449 static struct aiptek_map mouse_button_map[] = {
1450 	{ "left",	AIPTEK_MOUSE_LEFT_BUTTON },
1451 	{ "middle",	AIPTEK_MOUSE_MIDDLE_BUTTON },
1452 	{ "right",	AIPTEK_MOUSE_RIGHT_BUTTON },
1453 	{ NULL,		AIPTEK_INVALID_VALUE }
1454 };
1455 
1456 static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
1457 {
1458 	struct aiptek *aiptek = dev_get_drvdata(dev);
1459 
1460 	return snprintf(buf, PAGE_SIZE, "%s\n",
1461 			map_val_to_str(mouse_button_map,
1462 					aiptek->curSetting.mouseButtonLeft));
1463 }
1464 
1465 static ssize_t
1466 store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1467 {
1468 	struct aiptek *aiptek = dev_get_drvdata(dev);
1469 	int new_button = map_str_to_val(mouse_button_map, buf, count);
1470 
1471 	if (new_button == AIPTEK_INVALID_VALUE)
1472 		return -EINVAL;
1473 
1474 	aiptek->newSetting.mouseButtonLeft = new_button;
1475 	return count;
1476 }
1477 
1478 static DEVICE_ATTR(mouse_left,
1479 		   S_IRUGO | S_IWUSR,
1480 		   show_tabletMouseLeft, store_tabletMouseLeft);
1481 
1482 /***********************************************************************
1483  * support routines for the 'mouse_middle' file. Note that this file
1484  * both displays current setting and allows for setting changing.
1485  */
1486 static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, char *buf)
1487 {
1488 	struct aiptek *aiptek = dev_get_drvdata(dev);
1489 
1490 	return snprintf(buf, PAGE_SIZE, "%s\n",
1491 			map_val_to_str(mouse_button_map,
1492 					aiptek->curSetting.mouseButtonMiddle));
1493 }
1494 
1495 static ssize_t
1496 store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1497 {
1498 	struct aiptek *aiptek = dev_get_drvdata(dev);
1499 	int new_button = map_str_to_val(mouse_button_map, buf, count);
1500 
1501 	if (new_button == AIPTEK_INVALID_VALUE)
1502 		return -EINVAL;
1503 
1504 	aiptek->newSetting.mouseButtonMiddle = new_button;
1505 	return count;
1506 }
1507 
1508 static DEVICE_ATTR(mouse_middle,
1509 		   S_IRUGO | S_IWUSR,
1510 		   show_tabletMouseMiddle, store_tabletMouseMiddle);
1511 
1512 /***********************************************************************
1513  * support routines for the 'mouse_right' file. Note that this file
1514  * both displays current setting and allows for setting changing.
1515  */
1516 static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute *attr, char *buf)
1517 {
1518 	struct aiptek *aiptek = dev_get_drvdata(dev);
1519 
1520 	return snprintf(buf, PAGE_SIZE, "%s\n",
1521 			map_val_to_str(mouse_button_map,
1522 					aiptek->curSetting.mouseButtonRight));
1523 }
1524 
1525 static ssize_t
1526 store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1527 {
1528 	struct aiptek *aiptek = dev_get_drvdata(dev);
1529 	int new_button = map_str_to_val(mouse_button_map, buf, count);
1530 
1531 	if (new_button == AIPTEK_INVALID_VALUE)
1532 		return -EINVAL;
1533 
1534 	aiptek->newSetting.mouseButtonRight = new_button;
1535 	return count;
1536 }
1537 
1538 static DEVICE_ATTR(mouse_right,
1539 		   S_IRUGO | S_IWUSR,
1540 		   show_tabletMouseRight, store_tabletMouseRight);
1541 
1542 /***********************************************************************
1543  * support routines for the 'wheel' file. Note that this file
1544  * both displays current setting and allows for setting changing.
1545  */
1546 static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *attr, char *buf)
1547 {
1548 	struct aiptek *aiptek = dev_get_drvdata(dev);
1549 
1550 	if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
1551 		return snprintf(buf, PAGE_SIZE, "disable\n");
1552 	} else {
1553 		return snprintf(buf, PAGE_SIZE, "%d\n",
1554 				aiptek->curSetting.wheel);
1555 	}
1556 }
1557 
1558 static ssize_t
1559 store_tabletWheel(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1560 {
1561 	struct aiptek *aiptek = dev_get_drvdata(dev);
1562 	int err, w;
1563 
1564 	err = kstrtoint(buf, 10, &w);
1565 	if (err)
1566 		return err;
1567 
1568 	aiptek->newSetting.wheel = w;
1569 	return count;
1570 }
1571 
1572 static DEVICE_ATTR(wheel,
1573 		   S_IRUGO | S_IWUSR, show_tabletWheel, store_tabletWheel);
1574 
1575 /***********************************************************************
1576  * support routines for the 'execute' file. Note that this file
1577  * both displays current setting and allows for setting changing.
1578  */
1579 static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *attr, char *buf)
1580 {
1581 	/* There is nothing useful to display, so a one-line manual
1582 	 * is in order...
1583 	 */
1584 	return snprintf(buf, PAGE_SIZE,
1585 			"Write anything to this file to program your tablet.\n");
1586 }
1587 
1588 static ssize_t
1589 store_tabletExecute(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1590 {
1591 	struct aiptek *aiptek = dev_get_drvdata(dev);
1592 
1593 	/* We do not care what you write to this file. Merely the action
1594 	 * of writing to this file triggers a tablet reprogramming.
1595 	 */
1596 	memcpy(&aiptek->curSetting, &aiptek->newSetting,
1597 	       sizeof(struct aiptek_settings));
1598 
1599 	if (aiptek_program_tablet(aiptek) < 0)
1600 		return -EIO;
1601 
1602 	return count;
1603 }
1604 
1605 static DEVICE_ATTR(execute,
1606 		   S_IRUGO | S_IWUSR, show_tabletExecute, store_tabletExecute);
1607 
1608 /***********************************************************************
1609  * support routines for the 'odm_code' file. Note that this file
1610  * only displays current setting.
1611  */
1612 static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *attr, char *buf)
1613 {
1614 	struct aiptek *aiptek = dev_get_drvdata(dev);
1615 
1616 	return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
1617 }
1618 
1619 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
1620 
1621 /***********************************************************************
1622  * support routines for the 'model_code' file. Note that this file
1623  * only displays current setting.
1624  */
1625 static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute *attr, char *buf)
1626 {
1627 	struct aiptek *aiptek = dev_get_drvdata(dev);
1628 
1629 	return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
1630 }
1631 
1632 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
1633 
1634 /***********************************************************************
1635  * support routines for the 'firmware_code' file. Note that this file
1636  * only displays current setting.
1637  */
1638 static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *attr, char *buf)
1639 {
1640 	struct aiptek *aiptek = dev_get_drvdata(dev);
1641 
1642 	return snprintf(buf, PAGE_SIZE, "%04x\n",
1643 			aiptek->features.firmwareCode);
1644 }
1645 
1646 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
1647 
1648 static struct attribute *aiptek_attributes[] = {
1649 	&dev_attr_size.attr,
1650 	&dev_attr_pointer_mode.attr,
1651 	&dev_attr_coordinate_mode.attr,
1652 	&dev_attr_tool_mode.attr,
1653 	&dev_attr_xtilt.attr,
1654 	&dev_attr_ytilt.attr,
1655 	&dev_attr_jitter.attr,
1656 	&dev_attr_delay.attr,
1657 	&dev_attr_event_count.attr,
1658 	&dev_attr_diagnostic.attr,
1659 	&dev_attr_odm_code.attr,
1660 	&dev_attr_model_code.attr,
1661 	&dev_attr_firmware_code.attr,
1662 	&dev_attr_stylus_lower.attr,
1663 	&dev_attr_stylus_upper.attr,
1664 	&dev_attr_mouse_left.attr,
1665 	&dev_attr_mouse_middle.attr,
1666 	&dev_attr_mouse_right.attr,
1667 	&dev_attr_wheel.attr,
1668 	&dev_attr_execute.attr,
1669 	NULL
1670 };
1671 
1672 static const struct attribute_group aiptek_attribute_group = {
1673 	.attrs	= aiptek_attributes,
1674 };
1675 
1676 /***********************************************************************
1677  * This routine is called when a tablet has been identified. It basically
1678  * sets up the tablet and the driver's internal structures.
1679  */
1680 static int
1681 aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
1682 {
1683 	struct usb_device *usbdev = interface_to_usbdev(intf);
1684 	struct usb_endpoint_descriptor *endpoint;
1685 	struct aiptek *aiptek;
1686 	struct input_dev *inputdev;
1687 	int i;
1688 	int speeds[] = { 0,
1689 		AIPTEK_PROGRAMMABLE_DELAY_50,
1690 		AIPTEK_PROGRAMMABLE_DELAY_400,
1691 		AIPTEK_PROGRAMMABLE_DELAY_25,
1692 		AIPTEK_PROGRAMMABLE_DELAY_100,
1693 		AIPTEK_PROGRAMMABLE_DELAY_200,
1694 		AIPTEK_PROGRAMMABLE_DELAY_300
1695 	};
1696 	int err = -ENOMEM;
1697 
1698 	/* programmableDelay is where the command-line specified
1699 	 * delay is kept. We make it the first element of speeds[],
1700 	 * so therefore, your override speed is tried first, then the
1701 	 * remainder. Note that the default value of 400ms will be tried
1702 	 * if you do not specify any command line parameter.
1703 	 */
1704 	speeds[0] = programmableDelay;
1705 
1706 	aiptek = kzalloc(sizeof(struct aiptek), GFP_KERNEL);
1707 	inputdev = input_allocate_device();
1708 	if (!aiptek || !inputdev) {
1709 		dev_warn(&intf->dev,
1710 			 "cannot allocate memory or input device\n");
1711 		goto fail1;
1712         }
1713 
1714 	aiptek->data = usb_alloc_coherent(usbdev, AIPTEK_PACKET_LENGTH,
1715 					  GFP_KERNEL, &aiptek->data_dma);
1716         if (!aiptek->data) {
1717 		dev_warn(&intf->dev, "cannot allocate usb buffer\n");
1718 		goto fail1;
1719 	}
1720 
1721 	aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
1722 	if (!aiptek->urb) {
1723 	        dev_warn(&intf->dev, "cannot allocate urb\n");
1724 		goto fail2;
1725 	}
1726 
1727 	aiptek->inputdev = inputdev;
1728 	aiptek->intf = intf;
1729 	aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
1730 	aiptek->inDelay = 0;
1731 	aiptek->endDelay = 0;
1732 	aiptek->previousJitterable = 0;
1733 	aiptek->lastMacro = -1;
1734 
1735 	/* Set up the curSettings struct. Said struct contains the current
1736 	 * programmable parameters. The newSetting struct contains changes
1737 	 * the user makes to the settings via the sysfs interface. Those
1738 	 * changes are not "committed" to curSettings until the user
1739 	 * writes to the sysfs/.../execute file.
1740 	 */
1741 	aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
1742 	aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
1743 	aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
1744 	aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
1745 	aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
1746 	aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
1747 	aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
1748 	aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
1749 	aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
1750 	aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
1751 	aiptek->curSetting.jitterDelay = jitterDelay;
1752 	aiptek->curSetting.programmableDelay = programmableDelay;
1753 
1754 	/* Both structs should have equivalent settings
1755 	 */
1756 	aiptek->newSetting = aiptek->curSetting;
1757 
1758 	/* Determine the usb devices' physical path.
1759 	 * Asketh not why we always pretend we're using "../input0",
1760 	 * but I suspect this will have to be refactored one
1761 	 * day if a single USB device can be a keyboard & a mouse
1762 	 * & a tablet, and the inputX number actually will tell
1763 	 * us something...
1764 	 */
1765 	usb_make_path(usbdev, aiptek->features.usbPath,
1766 			sizeof(aiptek->features.usbPath));
1767 	strlcat(aiptek->features.usbPath, "/input0",
1768 		sizeof(aiptek->features.usbPath));
1769 
1770 	/* Set up client data, pointers to open and close routines
1771 	 * for the input device.
1772 	 */
1773 	inputdev->name = "Aiptek";
1774 	inputdev->phys = aiptek->features.usbPath;
1775 	usb_to_input_id(usbdev, &inputdev->id);
1776 	inputdev->dev.parent = &intf->dev;
1777 
1778 	input_set_drvdata(inputdev, aiptek);
1779 
1780 	inputdev->open = aiptek_open;
1781 	inputdev->close = aiptek_close;
1782 
1783 	/* Now program the capacities of the tablet, in terms of being
1784 	 * an input device.
1785 	 */
1786 	for (i = 0; i < ARRAY_SIZE(eventTypes); ++i)
1787 	        __set_bit(eventTypes[i], inputdev->evbit);
1788 
1789 	for (i = 0; i < ARRAY_SIZE(absEvents); ++i)
1790 	        __set_bit(absEvents[i], inputdev->absbit);
1791 
1792 	for (i = 0; i < ARRAY_SIZE(relEvents); ++i)
1793 	        __set_bit(relEvents[i], inputdev->relbit);
1794 
1795 	__set_bit(MSC_SERIAL, inputdev->mscbit);
1796 
1797 	/* Set up key and button codes */
1798 	for (i = 0; i < ARRAY_SIZE(buttonEvents); ++i)
1799 		__set_bit(buttonEvents[i], inputdev->keybit);
1800 
1801 	for (i = 0; i < ARRAY_SIZE(macroKeyEvents); ++i)
1802 		__set_bit(macroKeyEvents[i], inputdev->keybit);
1803 
1804 	/*
1805 	 * Program the input device coordinate capacities. We do not yet
1806 	 * know what maximum X, Y, and Z values are, so we're putting fake
1807 	 * values in. Later, we'll ask the tablet to put in the correct
1808 	 * values.
1809 	 */
1810 	input_set_abs_params(inputdev, ABS_X, 0, 2999, 0, 0);
1811 	input_set_abs_params(inputdev, ABS_Y, 0, 2249, 0, 0);
1812 	input_set_abs_params(inputdev, ABS_PRESSURE, 0, 511, 0, 0);
1813 	input_set_abs_params(inputdev, ABS_TILT_X, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
1814 	input_set_abs_params(inputdev, ABS_TILT_Y, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
1815 	input_set_abs_params(inputdev, ABS_WHEEL, AIPTEK_WHEEL_MIN, AIPTEK_WHEEL_MAX - 1, 0, 0);
1816 
1817 	/* Verify that a device really has an endpoint */
1818 	if (intf->altsetting[0].desc.bNumEndpoints < 1) {
1819 		dev_err(&intf->dev,
1820 			"interface has %d endpoints, but must have minimum 1\n",
1821 			intf->altsetting[0].desc.bNumEndpoints);
1822 		err = -EINVAL;
1823 		goto fail3;
1824 	}
1825 	endpoint = &intf->altsetting[0].endpoint[0].desc;
1826 
1827 	/* Go set up our URB, which is called when the tablet receives
1828 	 * input.
1829 	 */
1830 	usb_fill_int_urb(aiptek->urb,
1831 			 usbdev,
1832 			 usb_rcvintpipe(usbdev,
1833 					endpoint->bEndpointAddress),
1834 			 aiptek->data, 8, aiptek_irq, aiptek,
1835 			 endpoint->bInterval);
1836 
1837 	aiptek->urb->transfer_dma = aiptek->data_dma;
1838 	aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1839 
1840 	/* Program the tablet. This sets the tablet up in the mode
1841 	 * specified in newSetting, and also queries the tablet's
1842 	 * physical capacities.
1843 	 *
1844 	 * Sanity check: if a tablet doesn't like the slow programmatic
1845 	 * delay, we often get sizes of 0x0. Let's use that as an indicator
1846 	 * to try faster delays, up to 25 ms. If that logic fails, well, you'll
1847 	 * have to explain to us how your tablet thinks it's 0x0, and yet that's
1848 	 * not an error :-)
1849 	 */
1850 
1851 	for (i = 0; i < ARRAY_SIZE(speeds); ++i) {
1852 		aiptek->curSetting.programmableDelay = speeds[i];
1853 		(void)aiptek_program_tablet(aiptek);
1854 		if (input_abs_get_max(aiptek->inputdev, ABS_X) > 0) {
1855 			dev_info(&intf->dev,
1856 				 "Aiptek using %d ms programming speed\n",
1857 				 aiptek->curSetting.programmableDelay);
1858 			break;
1859 		}
1860 	}
1861 
1862 	/* Murphy says that some day someone will have a tablet that fails the
1863 	   above test. That's you, Frederic Rodrigo */
1864 	if (i == ARRAY_SIZE(speeds)) {
1865 		dev_info(&intf->dev,
1866 			 "Aiptek tried all speeds, no sane response\n");
1867 		err = -EINVAL;
1868 		goto fail3;
1869 	}
1870 
1871 	/* Associate this driver's struct with the usb interface.
1872 	 */
1873 	usb_set_intfdata(intf, aiptek);
1874 
1875 	/* Set up the sysfs files
1876 	 */
1877 	err = sysfs_create_group(&intf->dev.kobj, &aiptek_attribute_group);
1878 	if (err) {
1879 		dev_warn(&intf->dev, "cannot create sysfs group err: %d\n",
1880 			 err);
1881 		goto fail3;
1882         }
1883 
1884 	/* Register the tablet as an Input Device
1885 	 */
1886 	err = input_register_device(aiptek->inputdev);
1887 	if (err) {
1888 		dev_warn(&intf->dev,
1889 			 "input_register_device returned err: %d\n", err);
1890 		goto fail4;
1891         }
1892 	return 0;
1893 
1894  fail4:	sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
1895  fail3: usb_free_urb(aiptek->urb);
1896  fail2:	usb_free_coherent(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
1897 			  aiptek->data_dma);
1898  fail1: usb_set_intfdata(intf, NULL);
1899 	input_free_device(inputdev);
1900 	kfree(aiptek);
1901 	return err;
1902 }
1903 
1904 /***********************************************************************
1905  * Deal with tablet disconnecting from the system.
1906  */
1907 static void aiptek_disconnect(struct usb_interface *intf)
1908 {
1909 	struct aiptek *aiptek = usb_get_intfdata(intf);
1910 
1911 	/* Disassociate driver's struct with usb interface
1912 	 */
1913 	usb_set_intfdata(intf, NULL);
1914 	if (aiptek != NULL) {
1915 		/* Free & unhook everything from the system.
1916 		 */
1917 		usb_kill_urb(aiptek->urb);
1918 		input_unregister_device(aiptek->inputdev);
1919 		sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
1920 		usb_free_urb(aiptek->urb);
1921 		usb_free_coherent(interface_to_usbdev(intf),
1922 				  AIPTEK_PACKET_LENGTH,
1923 				  aiptek->data, aiptek->data_dma);
1924 		kfree(aiptek);
1925 	}
1926 }
1927 
1928 static struct usb_driver aiptek_driver = {
1929 	.name = "aiptek",
1930 	.probe = aiptek_probe,
1931 	.disconnect = aiptek_disconnect,
1932 	.id_table = aiptek_ids,
1933 };
1934 
1935 module_usb_driver(aiptek_driver);
1936 
1937 MODULE_AUTHOR("Bryan W. Headley/Chris Atenasio/Cedric Brun/Rene van Paassen");
1938 MODULE_DESCRIPTION("Aiptek HyperPen USB Tablet Driver");
1939 MODULE_LICENSE("GPL");
1940 
1941 module_param(programmableDelay, int, 0);
1942 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
1943 module_param(jitterDelay, int, 0);
1944 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
1945