Merge branches 'release', 'acpica', 'bugzilla-10224', 'bugzilla-9772', 'bugzilla...
[linux-2.6] / drivers / input / touchscreen / usbtouchscreen.c
1 /******************************************************************************
2  * usbtouchscreen.c
3  * Driver for USB Touchscreens, supporting those devices:
4  *  - eGalax Touchkit
5  *    includes eTurboTouch CT-410/510/700
6  *  - 3M/Microtouch  EX II series
7  *  - ITM
8  *  - PanJit TouchSet
9  *  - eTurboTouch
10  *  - Gunze AHL61
11  *  - DMC TSC-10/25
12  *  - IRTOUCHSYSTEMS/UNITOP
13  *  - IdealTEK URTC1000
14  *  - General Touch
15  *  - GoTop Super_Q2/GogoPen/PenPower tablets
16  *
17  * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
18  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
19  *
20  * This program is free software; you can redistribute it and/or
21  * modify it under the terms of the GNU General Public License as
22  * published by the Free Software Foundation; either version 2 of the
23  * License, or (at your option) any later version.
24  *
25  * This program is distributed in the hope that it will be useful, but
26  * WITHOUT ANY WARRANTY; without even the implied warranty of
27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
28  * General Public License for more details.
29  *
30  * You should have received a copy of the GNU General Public License
31  * along with this program; if not, write to the Free Software
32  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33  *
34  * Driver is based on touchkitusb.c
35  * - ITM parts are from itmtouch.c
36  * - 3M parts are from mtouchusb.c
37  * - PanJit parts are from an unmerged driver by Lanslott Gish
38  * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
39  *   driver from Marius Vollmer
40  *
41  *****************************************************************************/
42
43 //#define DEBUG
44
45 #include <linux/kernel.h>
46 #include <linux/slab.h>
47 #include <linux/input.h>
48 #include <linux/module.h>
49 #include <linux/init.h>
50 #include <linux/usb.h>
51 #include <linux/usb/input.h>
52
53
54 #define DRIVER_VERSION          "v0.6"
55 #define DRIVER_AUTHOR           "Daniel Ritz <daniel.ritz@gmx.ch>"
56 #define DRIVER_DESC             "USB Touchscreen Driver"
57
58 static int swap_xy;
59 module_param(swap_xy, bool, 0644);
60 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
61
62 /* device specifc data/functions */
63 struct usbtouch_usb;
64 struct usbtouch_device_info {
65         int min_xc, max_xc;
66         int min_yc, max_yc;
67         int min_press, max_press;
68         int rept_size;
69
70         void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
71
72         /*
73          * used to get the packet len. possible return values:
74          * > 0: packet len
75          * = 0: skip one byte
76          * < 0: -return value more bytes needed
77          */
78         int  (*get_pkt_len) (unsigned char *pkt, int len);
79
80         int  (*read_data)   (struct usbtouch_usb *usbtouch, unsigned char *pkt);
81         int  (*init)        (struct usbtouch_usb *usbtouch);
82 };
83
84 /* a usbtouch device */
85 struct usbtouch_usb {
86         unsigned char *data;
87         dma_addr_t data_dma;
88         unsigned char *buffer;
89         int buf_len;
90         struct urb *irq;
91         struct usb_device *udev;
92         struct input_dev *input;
93         struct usbtouch_device_info *type;
94         char name[128];
95         char phys[64];
96
97         int x, y;
98         int touch, press;
99 };
100
101
102 /* device types */
103 enum {
104         DEVTPYE_DUMMY = -1,
105         DEVTYPE_EGALAX,
106         DEVTYPE_PANJIT,
107         DEVTYPE_3M,
108         DEVTYPE_ITM,
109         DEVTYPE_ETURBO,
110         DEVTYPE_GUNZE,
111         DEVTYPE_DMC_TSC10,
112         DEVTYPE_IRTOUCH,
113         DEVTYPE_IDEALTEK,
114         DEVTYPE_GENERAL_TOUCH,
115         DEVTYPE_GOTOP,
116 };
117
118 static struct usb_device_id usbtouch_devices[] = {
119 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
120         {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
121         {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
122         {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
123         {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
124         {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
125         {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
126         {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
127 #endif
128
129 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
130         {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
131         {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
132         {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
133         {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
134 #endif
135
136 #ifdef CONFIG_TOUCHSCREEN_USB_3M
137         {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
138 #endif
139
140 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
141         {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
142 #endif
143
144 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
145         {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
146 #endif
147
148 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
149         {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
150 #endif
151
152 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
153         {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
154 #endif
155
156 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
157         {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
158         {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
159 #endif
160
161 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
162         {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
163 #endif
164
165 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
166         {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
167 #endif
168
169 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
170         {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
171         {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
172         {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
173 #endif
174
175         {}
176 };
177
178
179 /*****************************************************************************
180  * eGalax part
181  */
182
183 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
184
185 #ifndef MULTI_PACKET
186 #define MULTI_PACKET
187 #endif
188
189 #define EGALAX_PKT_TYPE_MASK            0xFE
190 #define EGALAX_PKT_TYPE_REPT            0x80
191 #define EGALAX_PKT_TYPE_DIAG            0x0A
192
193 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
194 {
195         if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
196                 return 0;
197
198         dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
199         dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
200         dev->touch = pkt[0] & 0x01;
201
202         return 1;
203 }
204
205 static int egalax_get_pkt_len(unsigned char *buf, int len)
206 {
207         switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
208         case EGALAX_PKT_TYPE_REPT:
209                 return 5;
210
211         case EGALAX_PKT_TYPE_DIAG:
212                 if (len < 2)
213                         return -1;
214
215                 return buf[1] + 2;
216         }
217
218         return 0;
219 }
220 #endif
221
222
223 /*****************************************************************************
224  * PanJit Part
225  */
226 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
227 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
228 {
229         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
230         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
231         dev->touch = pkt[0] & 0x01;
232
233         return 1;
234 }
235 #endif
236
237
238 /*****************************************************************************
239  * 3M/Microtouch Part
240  */
241 #ifdef CONFIG_TOUCHSCREEN_USB_3M
242
243 #define MTOUCHUSB_ASYNC_REPORT          1
244 #define MTOUCHUSB_RESET                 7
245 #define MTOUCHUSB_REQ_CTRLLR_ID         10
246
247 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
248 {
249         dev->x = (pkt[8] << 8) | pkt[7];
250         dev->y = (pkt[10] << 8) | pkt[9];
251         dev->touch = (pkt[2] & 0x40) ? 1 : 0;
252
253         return 1;
254 }
255
256 static int mtouch_init(struct usbtouch_usb *usbtouch)
257 {
258         int ret, i;
259
260         ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
261                               MTOUCHUSB_RESET,
262                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
263                               1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
264         dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
265             __FUNCTION__, ret);
266         if (ret < 0)
267                 return ret;
268         msleep(150);
269
270         for (i = 0; i < 3; i++) {
271                 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
272                                       MTOUCHUSB_ASYNC_REPORT,
273                                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
274                                       1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
275                 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
276                     __FUNCTION__, ret);
277                 if (ret >= 0)
278                         break;
279                 if (ret != -EPIPE)
280                         return ret;
281         }
282
283         return 0;
284 }
285 #endif
286
287
288 /*****************************************************************************
289  * ITM Part
290  */
291 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
292 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
293 {
294         int touch;
295         /*
296          * ITM devices report invalid x/y data if not touched.
297          * if the screen was touched before but is not touched any more
298          * report touch as 0 with the last valid x/y data once. then stop
299          * reporting data until touched again.
300          */
301         dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
302
303         touch = ~pkt[7] & 0x20;
304         if (!touch) {
305                 if (dev->touch) {
306                         dev->touch = 0;
307                         return 1;
308                 }
309
310                 return 0;
311         }
312
313         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
314         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
315         dev->touch = touch;
316
317         return 1;
318 }
319 #endif
320
321
322 /*****************************************************************************
323  * eTurboTouch part
324  */
325 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
326 #ifndef MULTI_PACKET
327 #define MULTI_PACKET
328 #endif
329 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
330 {
331         unsigned int shift;
332
333         /* packets should start with sync */
334         if (!(pkt[0] & 0x80))
335                 return 0;
336
337         shift = (6 - (pkt[0] & 0x03));
338         dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
339         dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
340         dev->touch = (pkt[0] & 0x10) ? 1 : 0;
341
342         return 1;
343 }
344
345 static int eturbo_get_pkt_len(unsigned char *buf, int len)
346 {
347         if (buf[0] & 0x80)
348                 return 5;
349         if (buf[0] == 0x01)
350                 return 3;
351         return 0;
352 }
353 #endif
354
355
356 /*****************************************************************************
357  * Gunze part
358  */
359 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
360 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
361 {
362         if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
363                 return 0;
364
365         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
366         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
367         dev->touch = pkt[0] & 0x20;
368
369         return 1;
370 }
371 #endif
372
373 /*****************************************************************************
374  * DMC TSC-10/25 Part
375  *
376  * Documentation about the controller and it's protocol can be found at
377  *   http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
378  *   http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
379  */
380 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
381
382 /* supported data rates. currently using 130 */
383 #define TSC10_RATE_POINT        0x50
384 #define TSC10_RATE_30           0x40
385 #define TSC10_RATE_50           0x41
386 #define TSC10_RATE_80           0x42
387 #define TSC10_RATE_100          0x43
388 #define TSC10_RATE_130          0x44
389 #define TSC10_RATE_150          0x45
390
391 /* commands */
392 #define TSC10_CMD_RESET         0x55
393 #define TSC10_CMD_RATE          0x05
394 #define TSC10_CMD_DATA1         0x01
395
396 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
397 {
398         struct usb_device *dev = usbtouch->udev;
399         int ret = -ENOMEM;
400         unsigned char *buf;
401
402         buf = kmalloc(2, GFP_KERNEL);
403         if (!buf)
404                 goto err_nobuf;
405         /* reset */
406         buf[0] = buf[1] = 0xFF;
407         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
408                               TSC10_CMD_RESET,
409                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
410                               0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
411         if (ret < 0)
412                 goto err_out;
413         if (buf[0] != 0x06 || buf[1] != 0x00) {
414                 ret = -ENODEV;
415                 goto err_out;
416         }
417
418         /* set coordinate output rate */
419         buf[0] = buf[1] = 0xFF;
420         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
421                               TSC10_CMD_RATE,
422                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
423                               TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
424         if (ret < 0)
425                 goto err_out;
426         if ((buf[0] != 0x06 || buf[1] != 0x00) &&
427             (buf[0] != 0x15 || buf[1] != 0x01)) {
428                 ret = -ENODEV;
429                 goto err_out;
430         }
431
432         /* start sending data */
433         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
434                               TSC10_CMD_DATA1,
435                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
436                               0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
437 err_out:
438         kfree(buf);
439 err_nobuf:
440         return ret;
441 }
442
443
444 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
445 {
446         dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
447         dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
448         dev->touch = pkt[0] & 0x01;
449
450         return 1;
451 }
452 #endif
453
454
455 /*****************************************************************************
456  * IRTOUCH Part
457  */
458 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
459 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
460 {
461         dev->x = (pkt[3] << 8) | pkt[2];
462         dev->y = (pkt[5] << 8) | pkt[4];
463         dev->touch = (pkt[1] & 0x03) ? 1 : 0;
464
465         return 1;
466 }
467 #endif
468
469
470 /*****************************************************************************
471  * IdealTEK URTC1000 Part
472  */
473 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
474 #ifndef MULTI_PACKET
475 #define MULTI_PACKET
476 #endif
477 static int idealtek_get_pkt_len(unsigned char *buf, int len)
478 {
479         if (buf[0] & 0x80)
480                 return 5;
481         if (buf[0] == 0x01)
482                 return len;
483         return 0;
484 }
485
486 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
487 {
488         switch (pkt[0] & 0x98) {
489         case 0x88:
490                 /* touch data in IdealTEK mode */
491                 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
492                 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
493                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
494                 return 1;
495
496         case 0x98:
497                 /* touch data in MT emulation mode */
498                 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
499                 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
500                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
501                 return 1;
502
503         default:
504                 return 0;
505         }
506 }
507 #endif
508
509 /*****************************************************************************
510  * General Touch Part
511  */
512 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
513 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
514 {
515         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ;
516         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ;
517         dev->press = pkt[5] & 0xff;
518         dev->touch = pkt[0] & 0x01;
519
520         return 1;
521 }
522 #endif
523
524 /*****************************************************************************
525  * GoTop Part
526  */
527 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
528 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
529 {
530         dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
531         dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
532         dev->touch = pkt[0] & 0x01;
533         return 1;
534 }
535 #endif
536
537
538 /*****************************************************************************
539  * the different device descriptors
540  */
541 #ifdef MULTI_PACKET
542 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
543                                    unsigned char *pkt, int len);
544 #endif
545
546 static struct usbtouch_device_info usbtouch_dev_info[] = {
547 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
548         [DEVTYPE_EGALAX] = {
549                 .min_xc         = 0x0,
550                 .max_xc         = 0x07ff,
551                 .min_yc         = 0x0,
552                 .max_yc         = 0x07ff,
553                 .rept_size      = 16,
554                 .process_pkt    = usbtouch_process_multi,
555                 .get_pkt_len    = egalax_get_pkt_len,
556                 .read_data      = egalax_read_data,
557         },
558 #endif
559
560 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
561         [DEVTYPE_PANJIT] = {
562                 .min_xc         = 0x0,
563                 .max_xc         = 0x0fff,
564                 .min_yc         = 0x0,
565                 .max_yc         = 0x0fff,
566                 .rept_size      = 8,
567                 .read_data      = panjit_read_data,
568         },
569 #endif
570
571 #ifdef CONFIG_TOUCHSCREEN_USB_3M
572         [DEVTYPE_3M] = {
573                 .min_xc         = 0x0,
574                 .max_xc         = 0x4000,
575                 .min_yc         = 0x0,
576                 .max_yc         = 0x4000,
577                 .rept_size      = 11,
578                 .read_data      = mtouch_read_data,
579                 .init           = mtouch_init,
580         },
581 #endif
582
583 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
584         [DEVTYPE_ITM] = {
585                 .min_xc         = 0x0,
586                 .max_xc         = 0x0fff,
587                 .min_yc         = 0x0,
588                 .max_yc         = 0x0fff,
589                 .max_press      = 0xff,
590                 .rept_size      = 8,
591                 .read_data      = itm_read_data,
592         },
593 #endif
594
595 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
596         [DEVTYPE_ETURBO] = {
597                 .min_xc         = 0x0,
598                 .max_xc         = 0x07ff,
599                 .min_yc         = 0x0,
600                 .max_yc         = 0x07ff,
601                 .rept_size      = 8,
602                 .process_pkt    = usbtouch_process_multi,
603                 .get_pkt_len    = eturbo_get_pkt_len,
604                 .read_data      = eturbo_read_data,
605         },
606 #endif
607
608 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
609         [DEVTYPE_GUNZE] = {
610                 .min_xc         = 0x0,
611                 .max_xc         = 0x0fff,
612                 .min_yc         = 0x0,
613                 .max_yc         = 0x0fff,
614                 .rept_size      = 4,
615                 .read_data      = gunze_read_data,
616         },
617 #endif
618
619 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
620         [DEVTYPE_DMC_TSC10] = {
621                 .min_xc         = 0x0,
622                 .max_xc         = 0x03ff,
623                 .min_yc         = 0x0,
624                 .max_yc         = 0x03ff,
625                 .rept_size      = 5,
626                 .init           = dmc_tsc10_init,
627                 .read_data      = dmc_tsc10_read_data,
628         },
629 #endif
630
631 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
632         [DEVTYPE_IRTOUCH] = {
633                 .min_xc         = 0x0,
634                 .max_xc         = 0x0fff,
635                 .min_yc         = 0x0,
636                 .max_yc         = 0x0fff,
637                 .rept_size      = 8,
638                 .read_data      = irtouch_read_data,
639         },
640 #endif
641
642 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
643         [DEVTYPE_IDEALTEK] = {
644                 .min_xc         = 0x0,
645                 .max_xc         = 0x0fff,
646                 .min_yc         = 0x0,
647                 .max_yc         = 0x0fff,
648                 .rept_size      = 8,
649                 .process_pkt    = usbtouch_process_multi,
650                 .get_pkt_len    = idealtek_get_pkt_len,
651                 .read_data      = idealtek_read_data,
652         },
653 #endif
654
655 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
656         [DEVTYPE_GENERAL_TOUCH] = {
657                 .min_xc         = 0x0,
658                 .max_xc         = 0x0500,
659                 .min_yc         = 0x0,
660                 .max_yc         = 0x0500,
661                 .rept_size      = 7,
662                 .read_data      = general_touch_read_data,
663         },
664 #endif
665
666 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
667         [DEVTYPE_GOTOP] = {
668                 .min_xc         = 0x0,
669                 .max_xc         = 0x03ff,
670                 .min_yc         = 0x0,
671                 .max_yc         = 0x03ff,
672                 .rept_size      = 4,
673                 .read_data      = gotop_read_data,
674         },
675 #endif
676 };
677
678
679 /*****************************************************************************
680  * Generic Part
681  */
682 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
683                                  unsigned char *pkt, int len)
684 {
685         struct usbtouch_device_info *type = usbtouch->type;
686
687         if (!type->read_data(usbtouch, pkt))
688                         return;
689
690         input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
691
692         if (swap_xy) {
693                 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
694                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
695         } else {
696                 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
697                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
698         }
699         if (type->max_press)
700                 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
701         input_sync(usbtouch->input);
702 }
703
704
705 #ifdef MULTI_PACKET
706 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
707                                    unsigned char *pkt, int len)
708 {
709         unsigned char *buffer;
710         int pkt_len, pos, buf_len, tmp;
711
712         /* process buffer */
713         if (unlikely(usbtouch->buf_len)) {
714                 /* try to get size */
715                 pkt_len = usbtouch->type->get_pkt_len(
716                                 usbtouch->buffer, usbtouch->buf_len);
717
718                 /* drop? */
719                 if (unlikely(!pkt_len))
720                         goto out_flush_buf;
721
722                 /* need to append -pkt_len bytes before able to get size */
723                 if (unlikely(pkt_len < 0)) {
724                         int append = -pkt_len;
725                         if (unlikely(append > len))
726                                append = len;
727                         if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
728                                 goto out_flush_buf;
729                         memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
730                         usbtouch->buf_len += append;
731
732                         pkt_len = usbtouch->type->get_pkt_len(
733                                         usbtouch->buffer, usbtouch->buf_len);
734                         if (pkt_len < 0)
735                                 return;
736                 }
737
738                 /* append */
739                 tmp = pkt_len - usbtouch->buf_len;
740                 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
741                         goto out_flush_buf;
742                 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
743                 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
744
745                 buffer = pkt + tmp;
746                 buf_len = len - tmp;
747         } else {
748                 buffer = pkt;
749                 buf_len = len;
750         }
751
752         /* loop over the received packet, process */
753         pos = 0;
754         while (pos < buf_len) {
755                 /* get packet len */
756                 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
757                                                         buf_len - pos);
758
759                 /* unknown packet: skip one byte */
760                 if (unlikely(!pkt_len)) {
761                         pos++;
762                         continue;
763                 }
764
765                 /* full packet: process */
766                 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
767                         usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
768                 } else {
769                         /* incomplete packet: save in buffer */
770                         memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
771                         usbtouch->buf_len = buf_len - pos;
772                         return;
773                 }
774                 pos += pkt_len;
775         }
776
777 out_flush_buf:
778         usbtouch->buf_len = 0;
779         return;
780 }
781 #endif
782
783
784 static void usbtouch_irq(struct urb *urb)
785 {
786         struct usbtouch_usb *usbtouch = urb->context;
787         int retval;
788
789         switch (urb->status) {
790         case 0:
791                 /* success */
792                 break;
793         case -ETIME:
794                 /* this urb is timing out */
795                 dbg("%s - urb timed out - was the device unplugged?",
796                     __FUNCTION__);
797                 return;
798         case -ECONNRESET:
799         case -ENOENT:
800         case -ESHUTDOWN:
801                 /* this urb is terminated, clean up */
802                 dbg("%s - urb shutting down with status: %d",
803                     __FUNCTION__, urb->status);
804                 return;
805         default:
806                 dbg("%s - nonzero urb status received: %d",
807                     __FUNCTION__, urb->status);
808                 goto exit;
809         }
810
811         usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
812
813 exit:
814         retval = usb_submit_urb(urb, GFP_ATOMIC);
815         if (retval)
816                 err("%s - usb_submit_urb failed with result: %d",
817                     __FUNCTION__, retval);
818 }
819
820 static int usbtouch_open(struct input_dev *input)
821 {
822         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
823
824         usbtouch->irq->dev = usbtouch->udev;
825
826         if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
827                 return -EIO;
828
829         return 0;
830 }
831
832 static void usbtouch_close(struct input_dev *input)
833 {
834         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
835
836         usb_kill_urb(usbtouch->irq);
837 }
838
839
840 static void usbtouch_free_buffers(struct usb_device *udev,
841                                   struct usbtouch_usb *usbtouch)
842 {
843         usb_buffer_free(udev, usbtouch->type->rept_size,
844                         usbtouch->data, usbtouch->data_dma);
845         kfree(usbtouch->buffer);
846 }
847
848
849 static int usbtouch_probe(struct usb_interface *intf,
850                           const struct usb_device_id *id)
851 {
852         struct usbtouch_usb *usbtouch;
853         struct input_dev *input_dev;
854         struct usb_host_interface *interface;
855         struct usb_endpoint_descriptor *endpoint;
856         struct usb_device *udev = interface_to_usbdev(intf);
857         struct usbtouch_device_info *type;
858         int err = -ENOMEM;
859
860         interface = intf->cur_altsetting;
861         endpoint = &interface->endpoint[0].desc;
862
863         usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
864         input_dev = input_allocate_device();
865         if (!usbtouch || !input_dev)
866                 goto out_free;
867
868         type = &usbtouch_dev_info[id->driver_info];
869         usbtouch->type = type;
870         if (!type->process_pkt)
871                 type->process_pkt = usbtouch_process_pkt;
872
873         usbtouch->data = usb_buffer_alloc(udev, type->rept_size,
874                                           GFP_KERNEL, &usbtouch->data_dma);
875         if (!usbtouch->data)
876                 goto out_free;
877
878         if (type->get_pkt_len) {
879                 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
880                 if (!usbtouch->buffer)
881                         goto out_free_buffers;
882         }
883
884         usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
885         if (!usbtouch->irq) {
886                 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__);
887                 goto out_free_buffers;
888         }
889
890         usbtouch->udev = udev;
891         usbtouch->input = input_dev;
892
893         if (udev->manufacturer)
894                 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
895
896         if (udev->product) {
897                 if (udev->manufacturer)
898                         strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
899                 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
900         }
901
902         if (!strlen(usbtouch->name))
903                 snprintf(usbtouch->name, sizeof(usbtouch->name),
904                         "USB Touchscreen %04x:%04x",
905                          le16_to_cpu(udev->descriptor.idVendor),
906                          le16_to_cpu(udev->descriptor.idProduct));
907
908         usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
909         strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
910
911         input_dev->name = usbtouch->name;
912         input_dev->phys = usbtouch->phys;
913         usb_to_input_id(udev, &input_dev->id);
914         input_dev->dev.parent = &intf->dev;
915
916         input_set_drvdata(input_dev, usbtouch);
917
918         input_dev->open = usbtouch_open;
919         input_dev->close = usbtouch_close;
920
921         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
922         input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
923         input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
924         input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
925         if (type->max_press)
926                 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
927                                      type->max_press, 0, 0);
928
929         usb_fill_int_urb(usbtouch->irq, usbtouch->udev,
930                          usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress),
931                          usbtouch->data, type->rept_size,
932                          usbtouch_irq, usbtouch, endpoint->bInterval);
933
934         usbtouch->irq->dev = usbtouch->udev;
935         usbtouch->irq->transfer_dma = usbtouch->data_dma;
936         usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
937
938         /* device specific init */
939         if (type->init) {
940                 err = type->init(usbtouch);
941                 if (err) {
942                         dbg("%s - type->init() failed, err: %d", __FUNCTION__, err);
943                         goto out_free_buffers;
944                 }
945         }
946
947         err = input_register_device(usbtouch->input);
948         if (err) {
949                 dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err);
950                 goto out_free_buffers;
951         }
952
953         usb_set_intfdata(intf, usbtouch);
954
955         return 0;
956
957 out_free_buffers:
958         usbtouch_free_buffers(udev, usbtouch);
959 out_free:
960         input_free_device(input_dev);
961         kfree(usbtouch);
962         return err;
963 }
964
965 static void usbtouch_disconnect(struct usb_interface *intf)
966 {
967         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
968
969         dbg("%s - called", __FUNCTION__);
970
971         if (!usbtouch)
972                 return;
973
974         dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__);
975         usb_set_intfdata(intf, NULL);
976         usb_kill_urb(usbtouch->irq);
977         input_unregister_device(usbtouch->input);
978         usb_free_urb(usbtouch->irq);
979         usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
980         kfree(usbtouch);
981 }
982
983 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
984
985 static struct usb_driver usbtouch_driver = {
986         .name           = "usbtouchscreen",
987         .probe          = usbtouch_probe,
988         .disconnect     = usbtouch_disconnect,
989         .id_table       = usbtouch_devices,
990 };
991
992 static int __init usbtouch_init(void)
993 {
994         return usb_register(&usbtouch_driver);
995 }
996
997 static void __exit usbtouch_cleanup(void)
998 {
999         usb_deregister(&usbtouch_driver);
1000 }
1001
1002 module_init(usbtouch_init);
1003 module_exit(usbtouch_cleanup);
1004
1005 MODULE_AUTHOR(DRIVER_AUTHOR);
1006 MODULE_DESCRIPTION(DRIVER_DESC);
1007 MODULE_LICENSE("GPL");
1008
1009 MODULE_ALIAS("touchkitusb");
1010 MODULE_ALIAS("itmtouch");
1011 MODULE_ALIAS("mtouchusb");