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46#include <linux/kernel.h>
47#include <linux/slab.h>
48#include <linux/input.h>
49#include <linux/module.h>
50#include <linux/init.h>
51#include <linux/usb.h>
52#include <linux/usb/input.h>
53#include <linux/hid.h>
54
55
56#define DRIVER_VERSION "v0.6"
57#define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
58#define DRIVER_DESC "USB Touchscreen Driver"
59
60static int swap_xy;
61module_param(swap_xy, bool, 0644);
62MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
63
64static int hwcalib_xy;
65module_param(hwcalib_xy, bool, 0644);
66MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
67
68
69struct usbtouch_usb;
70struct usbtouch_device_info {
71 int min_xc, max_xc;
72 int min_yc, max_yc;
73 int min_press, max_press;
74 int rept_size;
75
76 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
77
78
79
80
81
82
83
84 int (*get_pkt_len) (unsigned char *pkt, int len);
85
86 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
87 int (*init) (struct usbtouch_usb *usbtouch);
88};
89
90
91struct usbtouch_usb {
92 unsigned char *data;
93 dma_addr_t data_dma;
94 unsigned char *buffer;
95 int buf_len;
96 struct urb *irq;
97 struct usb_device *udev;
98 struct input_dev *input;
99 struct usbtouch_device_info *type;
100 char name[128];
101 char phys[64];
102
103 int x, y;
104 int touch, press;
105};
106
107
108
109enum {
110 DEVTYPE_IGNORE = -1,
111 DEVTYPE_EGALAX,
112 DEVTYPE_PANJIT,
113 DEVTYPE_3M,
114 DEVTYPE_ITM,
115 DEVTYPE_ETURBO,
116 DEVTYPE_GUNZE,
117 DEVTYPE_DMC_TSC10,
118 DEVTYPE_IRTOUCH,
119 DEVTYPE_IDEALTEK,
120 DEVTYPE_GENERAL_TOUCH,
121 DEVTYPE_GOTOP,
122 DEVTYPE_JASTEC,
123 DEVTYPE_E2I,
124};
125
126#define USB_DEVICE_HID_CLASS(vend, prod) \
127 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
128 | USB_DEVICE_ID_MATCH_INT_PROTOCOL \
129 | USB_DEVICE_ID_MATCH_DEVICE, \
130 .idVendor = (vend), \
131 .idProduct = (prod), \
132 .bInterfaceClass = USB_INTERFACE_CLASS_HID, \
133 .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE
134
135static struct usb_device_id usbtouch_devices[] = {
136#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
137
138 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
139 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
140
141
142 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
143 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
144 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
145 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
146 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
147 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
148 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
149#endif
150
151#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
152 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
153 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
154 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
155 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
156#endif
157
158#ifdef CONFIG_TOUCHSCREEN_USB_3M
159 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
160#endif
161
162#ifdef CONFIG_TOUCHSCREEN_USB_ITM
163 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
164#endif
165
166#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
167 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
168#endif
169
170#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
171 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
172#endif
173
174#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
175 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
176#endif
177
178#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
179 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
180 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
181#endif
182
183#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
184 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
185#endif
186
187#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
188 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
189#endif
190
191#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
192 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
193 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
194 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
195#endif
196
197#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
198 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
199#endif
200
201#ifdef CONFIG_TOUCHSCREEN_USB_E2I
202 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
203#endif
204 {}
205};
206
207
208
209
210
211
212#ifdef CONFIG_TOUCHSCREEN_USB_E2I
213static int e2i_init(struct usbtouch_usb *usbtouch)
214{
215 int ret;
216
217 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
218 0x01, 0x02, 0x0000, 0x0081,
219 NULL, 0, USB_CTRL_SET_TIMEOUT);
220
221 dbg("%s - usb_control_msg - E2I_RESET - bytes|err: %d",
222 __func__, ret);
223 return ret;
224}
225
226static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
227{
228 int tmp = (pkt[0] << 8) | pkt[1];
229 dev->x = (pkt[2] << 8) | pkt[3];
230 dev->y = (pkt[4] << 8) | pkt[5];
231
232 tmp = tmp - 0xA000;
233 dev->touch = (tmp > 0);
234 dev->press = (tmp > 0 ? tmp : 0);
235
236 return 1;
237}
238#endif
239
240
241
242
243
244
245#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
246
247#ifndef MULTI_PACKET
248#define MULTI_PACKET
249#endif
250
251#define EGALAX_PKT_TYPE_MASK 0xFE
252#define EGALAX_PKT_TYPE_REPT 0x80
253#define EGALAX_PKT_TYPE_DIAG 0x0A
254
255static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
256{
257 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
258 return 0;
259
260 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
261 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
262 dev->touch = pkt[0] & 0x01;
263
264 return 1;
265}
266
267static int egalax_get_pkt_len(unsigned char *buf, int len)
268{
269 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
270 case EGALAX_PKT_TYPE_REPT:
271 return 5;
272
273 case EGALAX_PKT_TYPE_DIAG:
274 if (len < 2)
275 return -1;
276
277 return buf[1] + 2;
278 }
279
280 return 0;
281}
282#endif
283
284
285
286
287
288#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
289static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
290{
291 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
292 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
293 dev->touch = pkt[0] & 0x01;
294
295 return 1;
296}
297#endif
298
299
300
301
302
303#ifdef CONFIG_TOUCHSCREEN_USB_3M
304
305#define MTOUCHUSB_ASYNC_REPORT 1
306#define MTOUCHUSB_RESET 7
307#define MTOUCHUSB_REQ_CTRLLR_ID 10
308
309static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
310{
311 if (hwcalib_xy) {
312 dev->x = (pkt[4] << 8) | pkt[3];
313 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
314 } else {
315 dev->x = (pkt[8] << 8) | pkt[7];
316 dev->y = (pkt[10] << 8) | pkt[9];
317 }
318 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
319
320 return 1;
321}
322
323static int mtouch_init(struct usbtouch_usb *usbtouch)
324{
325 int ret, i;
326
327 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
328 MTOUCHUSB_RESET,
329 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
330 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
331 dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
332 __func__, ret);
333 if (ret < 0)
334 return ret;
335 msleep(150);
336
337 for (i = 0; i < 3; i++) {
338 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
339 MTOUCHUSB_ASYNC_REPORT,
340 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
341 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
342 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
343 __func__, ret);
344 if (ret >= 0)
345 break;
346 if (ret != -EPIPE)
347 return ret;
348 }
349
350
351 if (hwcalib_xy) {
352 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
353 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
354 }
355
356 return 0;
357}
358#endif
359
360
361
362
363
364#ifdef CONFIG_TOUCHSCREEN_USB_ITM
365static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
366{
367 int touch;
368
369
370
371
372
373
374 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
375
376 touch = ~pkt[7] & 0x20;
377 if (!touch) {
378 if (dev->touch) {
379 dev->touch = 0;
380 return 1;
381 }
382
383 return 0;
384 }
385
386 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
387 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
388 dev->touch = touch;
389
390 return 1;
391}
392#endif
393
394
395
396
397
398#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
399#ifndef MULTI_PACKET
400#define MULTI_PACKET
401#endif
402static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
403{
404 unsigned int shift;
405
406
407 if (!(pkt[0] & 0x80))
408 return 0;
409
410 shift = (6 - (pkt[0] & 0x03));
411 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
412 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
413 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
414
415 return 1;
416}
417
418static int eturbo_get_pkt_len(unsigned char *buf, int len)
419{
420 if (buf[0] & 0x80)
421 return 5;
422 if (buf[0] == 0x01)
423 return 3;
424 return 0;
425}
426#endif
427
428
429
430
431
432#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
433static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
434{
435 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
436 return 0;
437
438 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
439 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
440 dev->touch = pkt[0] & 0x20;
441
442 return 1;
443}
444#endif
445
446
447
448
449
450
451
452
453#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
454
455
456#define TSC10_RATE_POINT 0x50
457#define TSC10_RATE_30 0x40
458#define TSC10_RATE_50 0x41
459#define TSC10_RATE_80 0x42
460#define TSC10_RATE_100 0x43
461#define TSC10_RATE_130 0x44
462#define TSC10_RATE_150 0x45
463
464
465#define TSC10_CMD_RESET 0x55
466#define TSC10_CMD_RATE 0x05
467#define TSC10_CMD_DATA1 0x01
468
469static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
470{
471 struct usb_device *dev = usbtouch->udev;
472 int ret = -ENOMEM;
473 unsigned char *buf;
474
475 buf = kmalloc(2, GFP_KERNEL);
476 if (!buf)
477 goto err_nobuf;
478
479 buf[0] = buf[1] = 0xFF;
480 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
481 TSC10_CMD_RESET,
482 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
483 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
484 if (ret < 0)
485 goto err_out;
486 if (buf[0] != 0x06) {
487 ret = -ENODEV;
488 goto err_out;
489 }
490
491
492 buf[0] = buf[1] = 0xFF;
493 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
494 TSC10_CMD_RATE,
495 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
496 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
497 if (ret < 0)
498 goto err_out;
499 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
500 ret = -ENODEV;
501 goto err_out;
502 }
503
504
505 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
506 TSC10_CMD_DATA1,
507 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
508 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
509err_out:
510 kfree(buf);
511err_nobuf:
512 return ret;
513}
514
515
516static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
517{
518 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
519 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
520 dev->touch = pkt[0] & 0x01;
521
522 return 1;
523}
524#endif
525
526
527
528
529
530#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
531static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
532{
533 dev->x = (pkt[3] << 8) | pkt[2];
534 dev->y = (pkt[5] << 8) | pkt[4];
535 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
536
537 return 1;
538}
539#endif
540
541
542
543
544
545#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
546#ifndef MULTI_PACKET
547#define MULTI_PACKET
548#endif
549static int idealtek_get_pkt_len(unsigned char *buf, int len)
550{
551 if (buf[0] & 0x80)
552 return 5;
553 if (buf[0] == 0x01)
554 return len;
555 return 0;
556}
557
558static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
559{
560 switch (pkt[0] & 0x98) {
561 case 0x88:
562
563 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
564 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
565 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
566 return 1;
567
568 case 0x98:
569
570 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
571 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
572 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
573 return 1;
574
575 default:
576 return 0;
577 }
578}
579#endif
580
581
582
583
584#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
585static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
586{
587 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ;
588 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ;
589 dev->press = pkt[5] & 0xff;
590 dev->touch = pkt[0] & 0x01;
591
592 return 1;
593}
594#endif
595
596
597
598
599#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
600static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
601{
602 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
603 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
604 dev->touch = pkt[0] & 0x01;
605
606 return 1;
607}
608#endif
609
610
611
612
613#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
614static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
615{
616 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
617 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
618 dev->touch = (pkt[0] & 0x40) >> 6;
619
620 return 1;
621}
622#endif
623
624
625
626
627
628#ifdef MULTI_PACKET
629static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
630 unsigned char *pkt, int len);
631#endif
632
633static struct usbtouch_device_info usbtouch_dev_info[] = {
634#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
635 [DEVTYPE_EGALAX] = {
636 .min_xc = 0x0,
637 .max_xc = 0x07ff,
638 .min_yc = 0x0,
639 .max_yc = 0x07ff,
640 .rept_size = 16,
641 .process_pkt = usbtouch_process_multi,
642 .get_pkt_len = egalax_get_pkt_len,
643 .read_data = egalax_read_data,
644 },
645#endif
646
647#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
648 [DEVTYPE_PANJIT] = {
649 .min_xc = 0x0,
650 .max_xc = 0x0fff,
651 .min_yc = 0x0,
652 .max_yc = 0x0fff,
653 .rept_size = 8,
654 .read_data = panjit_read_data,
655 },
656#endif
657
658#ifdef CONFIG_TOUCHSCREEN_USB_3M
659 [DEVTYPE_3M] = {
660 .min_xc = 0x0,
661 .max_xc = 0x4000,
662 .min_yc = 0x0,
663 .max_yc = 0x4000,
664 .rept_size = 11,
665 .read_data = mtouch_read_data,
666 .init = mtouch_init,
667 },
668#endif
669
670#ifdef CONFIG_TOUCHSCREEN_USB_ITM
671 [DEVTYPE_ITM] = {
672 .min_xc = 0x0,
673 .max_xc = 0x0fff,
674 .min_yc = 0x0,
675 .max_yc = 0x0fff,
676 .max_press = 0xff,
677 .rept_size = 8,
678 .read_data = itm_read_data,
679 },
680#endif
681
682#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
683 [DEVTYPE_ETURBO] = {
684 .min_xc = 0x0,
685 .max_xc = 0x07ff,
686 .min_yc = 0x0,
687 .max_yc = 0x07ff,
688 .rept_size = 8,
689 .process_pkt = usbtouch_process_multi,
690 .get_pkt_len = eturbo_get_pkt_len,
691 .read_data = eturbo_read_data,
692 },
693#endif
694
695#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
696 [DEVTYPE_GUNZE] = {
697 .min_xc = 0x0,
698 .max_xc = 0x0fff,
699 .min_yc = 0x0,
700 .max_yc = 0x0fff,
701 .rept_size = 4,
702 .read_data = gunze_read_data,
703 },
704#endif
705
706#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
707 [DEVTYPE_DMC_TSC10] = {
708 .min_xc = 0x0,
709 .max_xc = 0x03ff,
710 .min_yc = 0x0,
711 .max_yc = 0x03ff,
712 .rept_size = 5,
713 .init = dmc_tsc10_init,
714 .read_data = dmc_tsc10_read_data,
715 },
716#endif
717
718#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
719 [DEVTYPE_IRTOUCH] = {
720 .min_xc = 0x0,
721 .max_xc = 0x0fff,
722 .min_yc = 0x0,
723 .max_yc = 0x0fff,
724 .rept_size = 8,
725 .read_data = irtouch_read_data,
726 },
727#endif
728
729#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
730 [DEVTYPE_IDEALTEK] = {
731 .min_xc = 0x0,
732 .max_xc = 0x0fff,
733 .min_yc = 0x0,
734 .max_yc = 0x0fff,
735 .rept_size = 8,
736 .process_pkt = usbtouch_process_multi,
737 .get_pkt_len = idealtek_get_pkt_len,
738 .read_data = idealtek_read_data,
739 },
740#endif
741
742#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
743 [DEVTYPE_GENERAL_TOUCH] = {
744 .min_xc = 0x0,
745 .max_xc = 0x0500,
746 .min_yc = 0x0,
747 .max_yc = 0x0500,
748 .rept_size = 7,
749 .read_data = general_touch_read_data,
750 },
751#endif
752
753#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
754 [DEVTYPE_GOTOP] = {
755 .min_xc = 0x0,
756 .max_xc = 0x03ff,
757 .min_yc = 0x0,
758 .max_yc = 0x03ff,
759 .rept_size = 4,
760 .read_data = gotop_read_data,
761 },
762#endif
763
764#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
765 [DEVTYPE_JASTEC] = {
766 .min_xc = 0x0,
767 .max_xc = 0x0fff,
768 .min_yc = 0x0,
769 .max_yc = 0x0fff,
770 .rept_size = 4,
771 .read_data = jastec_read_data,
772 },
773#endif
774
775#ifdef CONFIG_TOUCHSCREEN_USB_E2I
776 [DEVTYPE_E2I] = {
777 .min_xc = 0x0,
778 .max_xc = 0x7fff,
779 .min_yc = 0x0,
780 .max_yc = 0x7fff,
781 .rept_size = 6,
782 .init = e2i_init,
783 .read_data = e2i_read_data,
784 },
785#endif
786};
787
788
789
790
791
792static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
793 unsigned char *pkt, int len)
794{
795 struct usbtouch_device_info *type = usbtouch->type;
796
797 if (!type->read_data(usbtouch, pkt))
798 return;
799
800 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
801
802 if (swap_xy) {
803 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
804 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
805 } else {
806 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
807 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
808 }
809 if (type->max_press)
810 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
811 input_sync(usbtouch->input);
812}
813
814
815#ifdef MULTI_PACKET
816static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
817 unsigned char *pkt, int len)
818{
819 unsigned char *buffer;
820 int pkt_len, pos, buf_len, tmp;
821
822
823 if (unlikely(usbtouch->buf_len)) {
824
825 pkt_len = usbtouch->type->get_pkt_len(
826 usbtouch->buffer, usbtouch->buf_len);
827
828
829 if (unlikely(!pkt_len))
830 goto out_flush_buf;
831
832
833 if (unlikely(pkt_len < 0)) {
834 int append = -pkt_len;
835 if (unlikely(append > len))
836 append = len;
837 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
838 goto out_flush_buf;
839 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
840 usbtouch->buf_len += append;
841
842 pkt_len = usbtouch->type->get_pkt_len(
843 usbtouch->buffer, usbtouch->buf_len);
844 if (pkt_len < 0)
845 return;
846 }
847
848
849 tmp = pkt_len - usbtouch->buf_len;
850 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
851 goto out_flush_buf;
852 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
853 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
854
855 buffer = pkt + tmp;
856 buf_len = len - tmp;
857 } else {
858 buffer = pkt;
859 buf_len = len;
860 }
861
862
863 pos = 0;
864 while (pos < buf_len) {
865
866 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
867 buf_len - pos);
868
869
870 if (unlikely(!pkt_len)) {
871 pos++;
872 continue;
873 }
874
875
876 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
877 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
878 } else {
879
880 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
881 usbtouch->buf_len = buf_len - pos;
882 return;
883 }
884 pos += pkt_len;
885 }
886
887out_flush_buf:
888 usbtouch->buf_len = 0;
889 return;
890}
891#endif
892
893
894static void usbtouch_irq(struct urb *urb)
895{
896 struct usbtouch_usb *usbtouch = urb->context;
897 int retval;
898
899 switch (urb->status) {
900 case 0:
901
902 break;
903 case -ETIME:
904
905 dbg("%s - urb timed out - was the device unplugged?",
906 __func__);
907 return;
908 case -ECONNRESET:
909 case -ENOENT:
910 case -ESHUTDOWN:
911
912 dbg("%s - urb shutting down with status: %d",
913 __func__, urb->status);
914 return;
915 default:
916 dbg("%s - nonzero urb status received: %d",
917 __func__, urb->status);
918 goto exit;
919 }
920
921 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
922
923exit:
924 retval = usb_submit_urb(urb, GFP_ATOMIC);
925 if (retval)
926 err("%s - usb_submit_urb failed with result: %d",
927 __func__, retval);
928}
929
930static int usbtouch_open(struct input_dev *input)
931{
932 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
933
934 usbtouch->irq->dev = usbtouch->udev;
935
936 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
937 return -EIO;
938
939 return 0;
940}
941
942static void usbtouch_close(struct input_dev *input)
943{
944 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
945
946 usb_kill_urb(usbtouch->irq);
947}
948
949
950static void usbtouch_free_buffers(struct usb_device *udev,
951 struct usbtouch_usb *usbtouch)
952{
953 usb_buffer_free(udev, usbtouch->type->rept_size,
954 usbtouch->data, usbtouch->data_dma);
955 kfree(usbtouch->buffer);
956}
957
958
959static int usbtouch_probe(struct usb_interface *intf,
960 const struct usb_device_id *id)
961{
962 struct usbtouch_usb *usbtouch;
963 struct input_dev *input_dev;
964 struct usb_host_interface *interface;
965 struct usb_endpoint_descriptor *endpoint;
966 struct usb_device *udev = interface_to_usbdev(intf);
967 struct usbtouch_device_info *type;
968 int err = -ENOMEM;
969
970
971 if (id->driver_info == DEVTYPE_IGNORE)
972 return -ENODEV;
973
974 interface = intf->cur_altsetting;
975 endpoint = &interface->endpoint[0].desc;
976
977 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
978 input_dev = input_allocate_device();
979 if (!usbtouch || !input_dev)
980 goto out_free;
981
982 type = &usbtouch_dev_info[id->driver_info];
983 usbtouch->type = type;
984 if (!type->process_pkt)
985 type->process_pkt = usbtouch_process_pkt;
986
987 usbtouch->data = usb_buffer_alloc(udev, type->rept_size,
988 GFP_KERNEL, &usbtouch->data_dma);
989 if (!usbtouch->data)
990 goto out_free;
991
992 if (type->get_pkt_len) {
993 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
994 if (!usbtouch->buffer)
995 goto out_free_buffers;
996 }
997
998 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
999 if (!usbtouch->irq) {
1000 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __func__);
1001 goto out_free_buffers;
1002 }
1003
1004 usbtouch->udev = udev;
1005 usbtouch->input = input_dev;
1006
1007 if (udev->manufacturer)
1008 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1009
1010 if (udev->product) {
1011 if (udev->manufacturer)
1012 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1013 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1014 }
1015
1016 if (!strlen(usbtouch->name))
1017 snprintf(usbtouch->name, sizeof(usbtouch->name),
1018 "USB Touchscreen %04x:%04x",
1019 le16_to_cpu(udev->descriptor.idVendor),
1020 le16_to_cpu(udev->descriptor.idProduct));
1021
1022 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1023 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1024
1025 input_dev->name = usbtouch->name;
1026 input_dev->phys = usbtouch->phys;
1027 usb_to_input_id(udev, &input_dev->id);
1028 input_dev->dev.parent = &intf->dev;
1029
1030 input_set_drvdata(input_dev, usbtouch);
1031
1032 input_dev->open = usbtouch_open;
1033 input_dev->close = usbtouch_close;
1034
1035 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1036 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1037 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1038 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1039 if (type->max_press)
1040 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1041 type->max_press, 0, 0);
1042
1043 usb_fill_int_urb(usbtouch->irq, usbtouch->udev,
1044 usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress),
1045 usbtouch->data, type->rept_size,
1046 usbtouch_irq, usbtouch, endpoint->bInterval);
1047
1048 usbtouch->irq->dev = usbtouch->udev;
1049 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1050 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1051
1052
1053 if (type->init) {
1054 err = type->init(usbtouch);
1055 if (err) {
1056 dbg("%s - type->init() failed, err: %d", __func__, err);
1057 goto out_free_buffers;
1058 }
1059 }
1060
1061 err = input_register_device(usbtouch->input);
1062 if (err) {
1063 dbg("%s - input_register_device failed, err: %d", __func__, err);
1064 goto out_free_buffers;
1065 }
1066
1067 usb_set_intfdata(intf, usbtouch);
1068
1069 return 0;
1070
1071out_free_buffers:
1072 usbtouch_free_buffers(udev, usbtouch);
1073out_free:
1074 input_free_device(input_dev);
1075 kfree(usbtouch);
1076 return err;
1077}
1078
1079static void usbtouch_disconnect(struct usb_interface *intf)
1080{
1081 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1082
1083 dbg("%s - called", __func__);
1084
1085 if (!usbtouch)
1086 return;
1087
1088 dbg("%s - usbtouch is initialized, cleaning up", __func__);
1089 usb_set_intfdata(intf, NULL);
1090 usb_kill_urb(usbtouch->irq);
1091 input_unregister_device(usbtouch->input);
1092 usb_free_urb(usbtouch->irq);
1093 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1094 kfree(usbtouch);
1095}
1096
1097MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1098
1099static struct usb_driver usbtouch_driver = {
1100 .name = "usbtouchscreen",
1101 .probe = usbtouch_probe,
1102 .disconnect = usbtouch_disconnect,
1103 .id_table = usbtouch_devices,
1104};
1105
1106static int __init usbtouch_init(void)
1107{
1108 return usb_register(&usbtouch_driver);
1109}
1110
1111static void __exit usbtouch_cleanup(void)
1112{
1113 usb_deregister(&usbtouch_driver);
1114}
1115
1116module_init(usbtouch_init);
1117module_exit(usbtouch_cleanup);
1118
1119MODULE_AUTHOR(DRIVER_AUTHOR);
1120MODULE_DESCRIPTION(DRIVER_DESC);
1121MODULE_LICENSE("GPL");
1122
1123MODULE_ALIAS("touchkitusb");
1124MODULE_ALIAS("itmtouch");
1125MODULE_ALIAS("mtouchusb");
1126
