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37#include <linux/kernel.h>
38#include <linux/slab.h>
39#include <linux/input.h>
40#include <linux/module.h>
41#include <linux/usb.h>
42#include <linux/usb/input.h>
43#include <linux/hid.h>
44#include <linux/mutex.h>
45
46static bool swap_xy;
47module_param(swap_xy, bool, 0644);
48MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
49
50static bool hwcalib_xy;
51module_param(hwcalib_xy, bool, 0644);
52MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
53
54
55struct usbtouch_usb;
56struct usbtouch_device_info {
57 int min_xc, max_xc;
58 int min_yc, max_yc;
59 int min_press, max_press;
60 int rept_size;
61
62
63
64
65
66
67
68
69 bool irq_always;
70
71 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
72
73
74
75
76
77
78
79 int (*get_pkt_len) (unsigned char *pkt, int len);
80
81 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
82 int (*alloc) (struct usbtouch_usb *usbtouch);
83 int (*init) (struct usbtouch_usb *usbtouch);
84 void (*exit) (struct usbtouch_usb *usbtouch);
85};
86
87
88struct usbtouch_usb {
89 unsigned char *data;
90 dma_addr_t data_dma;
91 int data_size;
92 unsigned char *buffer;
93 int buf_len;
94 struct urb *irq;
95 struct usb_interface *interface;
96 struct input_dev *input;
97 struct usbtouch_device_info *type;
98 struct mutex pm_mutex;
99 bool is_open;
100 char name[128];
101 char phys[64];
102 void *priv;
103
104 int x, y;
105 int touch, press;
106};
107
108
109
110enum {
111 DEVTYPE_IGNORE = -1,
112 DEVTYPE_EGALAX,
113 DEVTYPE_PANJIT,
114 DEVTYPE_3M,
115 DEVTYPE_ITM,
116 DEVTYPE_ETURBO,
117 DEVTYPE_GUNZE,
118 DEVTYPE_DMC_TSC10,
119 DEVTYPE_IRTOUCH,
120 DEVTYPE_IRTOUCH_HIRES,
121 DEVTYPE_IDEALTEK,
122 DEVTYPE_GENERAL_TOUCH,
123 DEVTYPE_GOTOP,
124 DEVTYPE_JASTEC,
125 DEVTYPE_E2I,
126 DEVTYPE_ZYTRONIC,
127 DEVTYPE_TC45USB,
128 DEVTYPE_NEXIO,
129 DEVTYPE_ELO,
130 DEVTYPE_ETOUCH,
131};
132
133#define USB_DEVICE_HID_CLASS(vend, prod) \
134 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
135 | USB_DEVICE_ID_MATCH_DEVICE, \
136 .idVendor = (vend), \
137 .idProduct = (prod), \
138 .bInterfaceClass = USB_INTERFACE_CLASS_HID
139
140static const struct usb_device_id usbtouch_devices[] = {
141#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
142
143 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
144 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
145
146
147 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
148 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
149 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
150 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
151 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
152 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
153 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
154#endif
155
156#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
157 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
158 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
159 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
160 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
161#endif
162
163#ifdef CONFIG_TOUCHSCREEN_USB_3M
164 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
165#endif
166
167#ifdef CONFIG_TOUCHSCREEN_USB_ITM
168 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
169 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
170#endif
171
172#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
173 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
174#endif
175
176#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
177 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
178#endif
179
180#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
181 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
182#endif
183
184#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
185 {USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
186 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
187 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
188 {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
189#endif
190
191#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
192 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
193#endif
194
195#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
196 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
197#endif
198
199#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
200 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
201 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
202 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
203#endif
204
205#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
206 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
207#endif
208
209#ifdef CONFIG_TOUCHSCREEN_USB_E2I
210 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
211#endif
212
213#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
214 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
215#endif
216
217#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
218
219 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
220
221 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
222#endif
223
224#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
225
226 {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
227 .driver_info = DEVTYPE_NEXIO},
228 {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
229 .driver_info = DEVTYPE_NEXIO},
230#endif
231
232#ifdef CONFIG_TOUCHSCREEN_USB_ELO
233 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
234#endif
235
236#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
237 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
238#endif
239
240 {}
241};
242
243
244
245
246
247
248#ifdef CONFIG_TOUCHSCREEN_USB_E2I
249static int e2i_init(struct usbtouch_usb *usbtouch)
250{
251 int ret;
252 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
253
254 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
255 0x01, 0x02, 0x0000, 0x0081,
256 NULL, 0, USB_CTRL_SET_TIMEOUT);
257
258 dev_dbg(&usbtouch->interface->dev,
259 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
260 __func__, ret);
261 return ret;
262}
263
264static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
265{
266 int tmp = (pkt[0] << 8) | pkt[1];
267 dev->x = (pkt[2] << 8) | pkt[3];
268 dev->y = (pkt[4] << 8) | pkt[5];
269
270 tmp = tmp - 0xA000;
271 dev->touch = (tmp > 0);
272 dev->press = (tmp > 0 ? tmp : 0);
273
274 return 1;
275}
276#endif
277
278
279
280
281
282
283#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
284
285#ifndef MULTI_PACKET
286#define MULTI_PACKET
287#endif
288
289#define EGALAX_PKT_TYPE_MASK 0xFE
290#define EGALAX_PKT_TYPE_REPT 0x80
291#define EGALAX_PKT_TYPE_DIAG 0x0A
292
293static int egalax_init(struct usbtouch_usb *usbtouch)
294{
295 int ret, i;
296 unsigned char *buf;
297 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
298
299
300
301
302
303
304
305 buf = kmalloc(3, GFP_KERNEL);
306 if (!buf)
307 return -ENOMEM;
308
309 buf[0] = EGALAX_PKT_TYPE_DIAG;
310 buf[1] = 1;
311 buf[2] = 'A';
312
313 for (i = 0; i < 3; i++) {
314 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
315 0,
316 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
317 0, 0, buf, 3,
318 USB_CTRL_SET_TIMEOUT);
319 if (ret >= 0) {
320 ret = 0;
321 break;
322 }
323 if (ret != -EPIPE)
324 break;
325 }
326
327 kfree(buf);
328
329 return ret;
330}
331
332static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
333{
334 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
335 return 0;
336
337 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
338 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
339 dev->touch = pkt[0] & 0x01;
340
341 return 1;
342}
343
344static int egalax_get_pkt_len(unsigned char *buf, int len)
345{
346 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
347 case EGALAX_PKT_TYPE_REPT:
348 return 5;
349
350 case EGALAX_PKT_TYPE_DIAG:
351 if (len < 2)
352 return -1;
353
354 return buf[1] + 2;
355 }
356
357 return 0;
358}
359#endif
360
361
362
363
364
365#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
366
367#ifndef MULTI_PACKET
368#define MULTI_PACKET
369#endif
370
371#define ETOUCH_PKT_TYPE_MASK 0xFE
372#define ETOUCH_PKT_TYPE_REPT 0x80
373#define ETOUCH_PKT_TYPE_REPT2 0xB0
374#define ETOUCH_PKT_TYPE_DIAG 0x0A
375
376static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
377{
378 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
379 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
380 return 0;
381
382 dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
383 dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
384 dev->touch = pkt[0] & 0x01;
385
386 return 1;
387}
388
389static int etouch_get_pkt_len(unsigned char *buf, int len)
390{
391 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
392 case ETOUCH_PKT_TYPE_REPT:
393 case ETOUCH_PKT_TYPE_REPT2:
394 return 5;
395
396 case ETOUCH_PKT_TYPE_DIAG:
397 if (len < 2)
398 return -1;
399
400 return buf[1] + 2;
401 }
402
403 return 0;
404}
405#endif
406
407
408
409
410#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
411static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
412{
413 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
414 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
415 dev->touch = pkt[0] & 0x01;
416
417 return 1;
418}
419#endif
420
421
422
423
424
425#ifdef CONFIG_TOUCHSCREEN_USB_3M
426
427#define MTOUCHUSB_ASYNC_REPORT 1
428#define MTOUCHUSB_RESET 7
429#define MTOUCHUSB_REQ_CTRLLR_ID 10
430
431#define MTOUCHUSB_REQ_CTRLLR_ID_LEN 16
432
433static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
434{
435 if (hwcalib_xy) {
436 dev->x = (pkt[4] << 8) | pkt[3];
437 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
438 } else {
439 dev->x = (pkt[8] << 8) | pkt[7];
440 dev->y = (pkt[10] << 8) | pkt[9];
441 }
442 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
443
444 return 1;
445}
446
447struct mtouch_priv {
448 u8 fw_rev_major;
449 u8 fw_rev_minor;
450};
451
452static ssize_t mtouch_firmware_rev_show(struct device *dev,
453 struct device_attribute *attr, char *output)
454{
455 struct usb_interface *intf = to_usb_interface(dev);
456 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
457 struct mtouch_priv *priv = usbtouch->priv;
458
459 return scnprintf(output, PAGE_SIZE, "%1x.%1x\n",
460 priv->fw_rev_major, priv->fw_rev_minor);
461}
462static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
463
464static struct attribute *mtouch_attrs[] = {
465 &dev_attr_firmware_rev.attr,
466 NULL
467};
468
469static const struct attribute_group mtouch_attr_group = {
470 .attrs = mtouch_attrs,
471};
472
473static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch)
474{
475 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
476 struct mtouch_priv *priv = usbtouch->priv;
477 u8 *buf;
478 int ret;
479
480 buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
481 if (!buf)
482 return -ENOMEM;
483
484 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
485 MTOUCHUSB_REQ_CTRLLR_ID,
486 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
487 0, 0, buf, MTOUCHUSB_REQ_CTRLLR_ID_LEN,
488 USB_CTRL_SET_TIMEOUT);
489 if (ret != MTOUCHUSB_REQ_CTRLLR_ID_LEN) {
490 dev_warn(&usbtouch->interface->dev,
491 "Failed to read FW rev: %d\n", ret);
492 ret = ret < 0 ? ret : -EIO;
493 goto free;
494 }
495
496 priv->fw_rev_major = buf[3];
497 priv->fw_rev_minor = buf[4];
498
499 ret = 0;
500
501free:
502 kfree(buf);
503 return ret;
504}
505
506static int mtouch_alloc(struct usbtouch_usb *usbtouch)
507{
508 int ret;
509
510 usbtouch->priv = kmalloc(sizeof(struct mtouch_priv), GFP_KERNEL);
511 if (!usbtouch->priv)
512 return -ENOMEM;
513
514 ret = sysfs_create_group(&usbtouch->interface->dev.kobj,
515 &mtouch_attr_group);
516 if (ret) {
517 kfree(usbtouch->priv);
518 usbtouch->priv = NULL;
519 return ret;
520 }
521
522 return 0;
523}
524
525static int mtouch_init(struct usbtouch_usb *usbtouch)
526{
527 int ret, i;
528 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
529
530 ret = mtouch_get_fw_revision(usbtouch);
531 if (ret)
532 return ret;
533
534 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
535 MTOUCHUSB_RESET,
536 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
537 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
538 dev_dbg(&usbtouch->interface->dev,
539 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
540 __func__, ret);
541 if (ret < 0)
542 return ret;
543 msleep(150);
544
545 for (i = 0; i < 3; i++) {
546 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
547 MTOUCHUSB_ASYNC_REPORT,
548 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
549 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
550 dev_dbg(&usbtouch->interface->dev,
551 "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
552 __func__, ret);
553 if (ret >= 0)
554 break;
555 if (ret != -EPIPE)
556 return ret;
557 }
558
559
560 if (hwcalib_xy) {
561 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
562 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
563 }
564
565 return 0;
566}
567
568static void mtouch_exit(struct usbtouch_usb *usbtouch)
569{
570 struct mtouch_priv *priv = usbtouch->priv;
571
572 sysfs_remove_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group);
573 kfree(priv);
574}
575#endif
576
577
578
579
580
581#ifdef CONFIG_TOUCHSCREEN_USB_ITM
582static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
583{
584 int touch;
585
586
587
588
589
590
591 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
592
593 touch = ~pkt[7] & 0x20;
594 if (!touch) {
595 if (dev->touch) {
596 dev->touch = 0;
597 return 1;
598 }
599
600 return 0;
601 }
602
603 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
604 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
605 dev->touch = touch;
606
607 return 1;
608}
609#endif
610
611
612
613
614
615#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
616#ifndef MULTI_PACKET
617#define MULTI_PACKET
618#endif
619static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
620{
621 unsigned int shift;
622
623
624 if (!(pkt[0] & 0x80))
625 return 0;
626
627 shift = (6 - (pkt[0] & 0x03));
628 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
629 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
630 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
631
632 return 1;
633}
634
635static int eturbo_get_pkt_len(unsigned char *buf, int len)
636{
637 if (buf[0] & 0x80)
638 return 5;
639 if (buf[0] == 0x01)
640 return 3;
641 return 0;
642}
643#endif
644
645
646
647
648
649#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
650static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
651{
652 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
653 return 0;
654
655 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
656 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
657 dev->touch = pkt[0] & 0x20;
658
659 return 1;
660}
661#endif
662
663
664
665
666
667
668
669
670#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
671
672
673#define TSC10_RATE_POINT 0x50
674#define TSC10_RATE_30 0x40
675#define TSC10_RATE_50 0x41
676#define TSC10_RATE_80 0x42
677#define TSC10_RATE_100 0x43
678#define TSC10_RATE_130 0x44
679#define TSC10_RATE_150 0x45
680
681
682#define TSC10_CMD_RESET 0x55
683#define TSC10_CMD_RATE 0x05
684#define TSC10_CMD_DATA1 0x01
685
686static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
687{
688 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
689 int ret = -ENOMEM;
690 unsigned char *buf;
691
692 buf = kmalloc(2, GFP_NOIO);
693 if (!buf)
694 goto err_nobuf;
695
696 buf[0] = buf[1] = 0xFF;
697 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
698 TSC10_CMD_RESET,
699 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
700 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
701 if (ret < 0)
702 goto err_out;
703 if (buf[0] != 0x06) {
704 ret = -ENODEV;
705 goto err_out;
706 }
707
708
709 msleep(150);
710
711
712 buf[0] = buf[1] = 0xFF;
713 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
714 TSC10_CMD_RATE,
715 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
716 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
717 if (ret < 0)
718 goto err_out;
719 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
720 ret = -ENODEV;
721 goto err_out;
722 }
723
724
725 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
726 TSC10_CMD_DATA1,
727 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
728 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
729err_out:
730 kfree(buf);
731err_nobuf:
732 return ret;
733}
734
735
736static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
737{
738 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
739 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
740 dev->touch = pkt[0] & 0x01;
741
742 return 1;
743}
744#endif
745
746
747
748
749
750#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
751static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
752{
753 dev->x = (pkt[3] << 8) | pkt[2];
754 dev->y = (pkt[5] << 8) | pkt[4];
755 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
756
757 return 1;
758}
759#endif
760
761
762
763
764#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
765static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
766{
767 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
768 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
769 dev->touch = pkt[0] & 0x01;
770
771 return 1;
772}
773#endif
774
775
776
777
778#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
779#ifndef MULTI_PACKET
780#define MULTI_PACKET
781#endif
782static int idealtek_get_pkt_len(unsigned char *buf, int len)
783{
784 if (buf[0] & 0x80)
785 return 5;
786 if (buf[0] == 0x01)
787 return len;
788 return 0;
789}
790
791static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
792{
793 switch (pkt[0] & 0x98) {
794 case 0x88:
795
796 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
797 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
798 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
799 return 1;
800
801 case 0x98:
802
803 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
804 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
805 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
806 return 1;
807
808 default:
809 return 0;
810 }
811}
812#endif
813
814
815
816
817#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
818static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
819{
820 dev->x = (pkt[2] << 8) | pkt[1];
821 dev->y = (pkt[4] << 8) | pkt[3];
822 dev->press = pkt[5] & 0xff;
823 dev->touch = pkt[0] & 0x01;
824
825 return 1;
826}
827#endif
828
829
830
831
832#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
833static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
834{
835 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
836 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
837 dev->touch = pkt[0] & 0x01;
838
839 return 1;
840}
841#endif
842
843
844
845
846#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
847static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
848{
849 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
850 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
851 dev->touch = (pkt[0] & 0x40) >> 6;
852
853 return 1;
854}
855#endif
856
857
858
859
860#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
861static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
862{
863 struct usb_interface *intf = dev->interface;
864
865 switch (pkt[0]) {
866 case 0x3A:
867 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
868 break;
869
870 case 0xC0:
871 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
872 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
873 dev->touch = 1;
874 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
875 return 1;
876
877 case 0x80:
878 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
879 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
880 dev->touch = 0;
881 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
882 return 1;
883
884 default:
885 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
886 break;
887 }
888
889 return 0;
890}
891#endif
892
893
894
895
896#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
897
898#define NEXIO_TIMEOUT 5000
899#define NEXIO_BUFSIZE 1024
900#define NEXIO_THRESHOLD 50
901
902struct nexio_priv {
903 struct urb *ack;
904 unsigned char *ack_buf;
905};
906
907struct nexio_touch_packet {
908 u8 flags;
909 __be16 data_len;
910 __be16 x_len;
911 __be16 y_len;
912 u8 data[];
913} __attribute__ ((packed));
914
915static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
916static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
917
918static void nexio_ack_complete(struct urb *urb)
919{
920}
921
922static int nexio_alloc(struct usbtouch_usb *usbtouch)
923{
924 struct nexio_priv *priv;
925 int ret = -ENOMEM;
926
927 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
928 if (!usbtouch->priv)
929 goto out_buf;
930
931 priv = usbtouch->priv;
932
933 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
934 GFP_KERNEL);
935 if (!priv->ack_buf)
936 goto err_priv;
937
938 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
939 if (!priv->ack) {
940 dev_dbg(&usbtouch->interface->dev,
941 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
942 goto err_ack_buf;
943 }
944
945 return 0;
946
947err_ack_buf:
948 kfree(priv->ack_buf);
949err_priv:
950 kfree(priv);
951out_buf:
952 return ret;
953}
954
955static int nexio_init(struct usbtouch_usb *usbtouch)
956{
957 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
958 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
959 struct nexio_priv *priv = usbtouch->priv;
960 int ret = -ENOMEM;
961 int actual_len, i;
962 unsigned char *buf;
963 char *firmware_ver = NULL, *device_name = NULL;
964 int input_ep = 0, output_ep = 0;
965
966
967 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
968 if (!input_ep &&
969 usb_endpoint_dir_in(&interface->endpoint[i].desc))
970 input_ep = interface->endpoint[i].desc.bEndpointAddress;
971 if (!output_ep &&
972 usb_endpoint_dir_out(&interface->endpoint[i].desc))
973 output_ep = interface->endpoint[i].desc.bEndpointAddress;
974 }
975 if (!input_ep || !output_ep)
976 return -ENXIO;
977
978 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
979 if (!buf)
980 goto out_buf;
981
982
983 for (i = 0; i < 2; i++) {
984 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
985 buf, NEXIO_BUFSIZE, &actual_len,
986 NEXIO_TIMEOUT);
987 if (ret < 0)
988 goto out_buf;
989 }
990
991
992 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
993 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
994 buf, sizeof(nexio_init_pkt), &actual_len,
995 NEXIO_TIMEOUT);
996 if (ret < 0)
997 goto out_buf;
998
999
1000 for (i = 0; i < 3; i++) {
1001 memset(buf, 0, NEXIO_BUFSIZE);
1002 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
1003 buf, NEXIO_BUFSIZE, &actual_len,
1004 NEXIO_TIMEOUT);
1005 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
1006 continue;
1007 switch (buf[0]) {
1008 case 0x83:
1009 if (!firmware_ver)
1010 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
1011 break;
1012 case 0x84:
1013 if (!device_name)
1014 device_name = kstrdup(&buf[2], GFP_NOIO);
1015 break;
1016 }
1017 }
1018
1019 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
1020 device_name, firmware_ver);
1021
1022 kfree(firmware_ver);
1023 kfree(device_name);
1024
1025 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
1026 priv->ack_buf, sizeof(nexio_ack_pkt),
1027 nexio_ack_complete, usbtouch);
1028 ret = 0;
1029
1030out_buf:
1031 kfree(buf);
1032 return ret;
1033}
1034
1035static void nexio_exit(struct usbtouch_usb *usbtouch)
1036{
1037 struct nexio_priv *priv = usbtouch->priv;
1038
1039 usb_kill_urb(priv->ack);
1040 usb_free_urb(priv->ack);
1041 kfree(priv->ack_buf);
1042 kfree(priv);
1043}
1044
1045static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
1046{
1047 struct device *dev = &usbtouch->interface->dev;
1048 struct nexio_touch_packet *packet = (void *) pkt;
1049 struct nexio_priv *priv = usbtouch->priv;
1050 unsigned int data_len = be16_to_cpu(packet->data_len);
1051 unsigned int x_len = be16_to_cpu(packet->x_len);
1052 unsigned int y_len = be16_to_cpu(packet->y_len);
1053 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
1054
1055
1056 if ((pkt[0] & 0xe0) != 0xe0)
1057 return 0;
1058
1059 if (data_len > 0xff)
1060 data_len -= 0x100;
1061 if (x_len > 0xff)
1062 x_len -= 0x80;
1063
1064
1065 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
1066 if (ret)
1067 dev_warn(dev, "Failed to submit ACK URB: %d\n", ret);
1068
1069 if (!usbtouch->type->max_xc) {
1070 usbtouch->type->max_xc = 2 * x_len;
1071 input_set_abs_params(usbtouch->input, ABS_X,
1072 0, usbtouch->type->max_xc, 0, 0);
1073 usbtouch->type->max_yc = 2 * y_len;
1074 input_set_abs_params(usbtouch->input, ABS_Y,
1075 0, usbtouch->type->max_yc, 0, 0);
1076 }
1077
1078
1079
1080
1081
1082
1083
1084 begin_x = end_x = begin_y = end_y = -1;
1085 for (x = 0; x < x_len; x++) {
1086 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1087 begin_x = x;
1088 continue;
1089 }
1090 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1091 end_x = x - 1;
1092 for (y = x_len; y < data_len; y++) {
1093 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1094 begin_y = y - x_len;
1095 continue;
1096 }
1097 if (end_y == -1 &&
1098 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1099 end_y = y - 1 - x_len;
1100 w = end_x - begin_x;
1101 h = end_y - begin_y;
1102#if 0
1103
1104 input_report_abs(usbtouch->input,
1105 ABS_MT_TOUCH_MAJOR, max(w,h));
1106 input_report_abs(usbtouch->input,
1107 ABS_MT_TOUCH_MINOR, min(x,h));
1108 input_report_abs(usbtouch->input,
1109 ABS_MT_POSITION_X, 2*begin_x+w);
1110 input_report_abs(usbtouch->input,
1111 ABS_MT_POSITION_Y, 2*begin_y+h);
1112 input_report_abs(usbtouch->input,
1113 ABS_MT_ORIENTATION, w > h);
1114 input_mt_sync(usbtouch->input);
1115#endif
1116
1117 usbtouch->x = 2 * begin_x + w;
1118 usbtouch->y = 2 * begin_y + h;
1119 usbtouch->touch = packet->flags & 0x01;
1120 begin_y = end_y = -1;
1121 return 1;
1122 }
1123 }
1124 begin_x = end_x = -1;
1125 }
1126
1127 }
1128 return 0;
1129}
1130#endif
1131
1132
1133
1134
1135
1136
1137#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1138
1139static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1140{
1141 dev->x = (pkt[3] << 8) | pkt[2];
1142 dev->y = (pkt[5] << 8) | pkt[4];
1143 dev->touch = pkt[6] > 0;
1144 dev->press = pkt[6];
1145
1146 return 1;
1147}
1148#endif
1149
1150
1151
1152
1153
1154#ifdef MULTI_PACKET
1155static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1156 unsigned char *pkt, int len);
1157#endif
1158
1159static struct usbtouch_device_info usbtouch_dev_info[] = {
1160#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1161 [DEVTYPE_ELO] = {
1162 .min_xc = 0x0,
1163 .max_xc = 0x0fff,
1164 .min_yc = 0x0,
1165 .max_yc = 0x0fff,
1166 .max_press = 0xff,
1167 .rept_size = 8,
1168 .read_data = elo_read_data,
1169 },
1170#endif
1171
1172#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1173 [DEVTYPE_EGALAX] = {
1174 .min_xc = 0x0,
1175 .max_xc = 0x07ff,
1176 .min_yc = 0x0,
1177 .max_yc = 0x07ff,
1178 .rept_size = 16,
1179 .process_pkt = usbtouch_process_multi,
1180 .get_pkt_len = egalax_get_pkt_len,
1181 .read_data = egalax_read_data,
1182 .init = egalax_init,
1183 },
1184#endif
1185
1186#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1187 [DEVTYPE_PANJIT] = {
1188 .min_xc = 0x0,
1189 .max_xc = 0x0fff,
1190 .min_yc = 0x0,
1191 .max_yc = 0x0fff,
1192 .rept_size = 8,
1193 .read_data = panjit_read_data,
1194 },
1195#endif
1196
1197#ifdef CONFIG_TOUCHSCREEN_USB_3M
1198 [DEVTYPE_3M] = {
1199 .min_xc = 0x0,
1200 .max_xc = 0x4000,
1201 .min_yc = 0x0,
1202 .max_yc = 0x4000,
1203 .rept_size = 11,
1204 .read_data = mtouch_read_data,
1205 .alloc = mtouch_alloc,
1206 .init = mtouch_init,
1207 .exit = mtouch_exit,
1208 },
1209#endif
1210
1211#ifdef CONFIG_TOUCHSCREEN_USB_ITM
1212 [DEVTYPE_ITM] = {
1213 .min_xc = 0x0,
1214 .max_xc = 0x0fff,
1215 .min_yc = 0x0,
1216 .max_yc = 0x0fff,
1217 .max_press = 0xff,
1218 .rept_size = 8,
1219 .read_data = itm_read_data,
1220 },
1221#endif
1222
1223#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1224 [DEVTYPE_ETURBO] = {
1225 .min_xc = 0x0,
1226 .max_xc = 0x07ff,
1227 .min_yc = 0x0,
1228 .max_yc = 0x07ff,
1229 .rept_size = 8,
1230 .process_pkt = usbtouch_process_multi,
1231 .get_pkt_len = eturbo_get_pkt_len,
1232 .read_data = eturbo_read_data,
1233 },
1234#endif
1235
1236#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1237 [DEVTYPE_GUNZE] = {
1238 .min_xc = 0x0,
1239 .max_xc = 0x0fff,
1240 .min_yc = 0x0,
1241 .max_yc = 0x0fff,
1242 .rept_size = 4,
1243 .read_data = gunze_read_data,
1244 },
1245#endif
1246
1247#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1248 [DEVTYPE_DMC_TSC10] = {
1249 .min_xc = 0x0,
1250 .max_xc = 0x03ff,
1251 .min_yc = 0x0,
1252 .max_yc = 0x03ff,
1253 .rept_size = 5,
1254 .init = dmc_tsc10_init,
1255 .read_data = dmc_tsc10_read_data,
1256 },
1257#endif
1258
1259#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1260 [DEVTYPE_IRTOUCH] = {
1261 .min_xc = 0x0,
1262 .max_xc = 0x0fff,
1263 .min_yc = 0x0,
1264 .max_yc = 0x0fff,
1265 .rept_size = 8,
1266 .read_data = irtouch_read_data,
1267 },
1268
1269 [DEVTYPE_IRTOUCH_HIRES] = {
1270 .min_xc = 0x0,
1271 .max_xc = 0x7fff,
1272 .min_yc = 0x0,
1273 .max_yc = 0x7fff,
1274 .rept_size = 8,
1275 .read_data = irtouch_read_data,
1276 },
1277#endif
1278
1279#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1280 [DEVTYPE_IDEALTEK] = {
1281 .min_xc = 0x0,
1282 .max_xc = 0x0fff,
1283 .min_yc = 0x0,
1284 .max_yc = 0x0fff,
1285 .rept_size = 8,
1286 .process_pkt = usbtouch_process_multi,
1287 .get_pkt_len = idealtek_get_pkt_len,
1288 .read_data = idealtek_read_data,
1289 },
1290#endif
1291
1292#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1293 [DEVTYPE_GENERAL_TOUCH] = {
1294 .min_xc = 0x0,
1295 .max_xc = 0x7fff,
1296 .min_yc = 0x0,
1297 .max_yc = 0x7fff,
1298 .rept_size = 7,
1299 .read_data = general_touch_read_data,
1300 },
1301#endif
1302
1303#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1304 [DEVTYPE_GOTOP] = {
1305 .min_xc = 0x0,
1306 .max_xc = 0x03ff,
1307 .min_yc = 0x0,
1308 .max_yc = 0x03ff,
1309 .rept_size = 4,
1310 .read_data = gotop_read_data,
1311 },
1312#endif
1313
1314#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1315 [DEVTYPE_JASTEC] = {
1316 .min_xc = 0x0,
1317 .max_xc = 0x0fff,
1318 .min_yc = 0x0,
1319 .max_yc = 0x0fff,
1320 .rept_size = 4,
1321 .read_data = jastec_read_data,
1322 },
1323#endif
1324
1325#ifdef CONFIG_TOUCHSCREEN_USB_E2I
1326 [DEVTYPE_E2I] = {
1327 .min_xc = 0x0,
1328 .max_xc = 0x7fff,
1329 .min_yc = 0x0,
1330 .max_yc = 0x7fff,
1331 .rept_size = 6,
1332 .init = e2i_init,
1333 .read_data = e2i_read_data,
1334 },
1335#endif
1336
1337#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1338 [DEVTYPE_ZYTRONIC] = {
1339 .min_xc = 0x0,
1340 .max_xc = 0x03ff,
1341 .min_yc = 0x0,
1342 .max_yc = 0x03ff,
1343 .rept_size = 5,
1344 .read_data = zytronic_read_data,
1345 .irq_always = true,
1346 },
1347#endif
1348
1349#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1350 [DEVTYPE_TC45USB] = {
1351 .min_xc = 0x0,
1352 .max_xc = 0x0fff,
1353 .min_yc = 0x0,
1354 .max_yc = 0x0fff,
1355 .rept_size = 5,
1356 .read_data = tc45usb_read_data,
1357 },
1358#endif
1359
1360#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1361 [DEVTYPE_NEXIO] = {
1362 .rept_size = 1024,
1363 .irq_always = true,
1364 .read_data = nexio_read_data,
1365 .alloc = nexio_alloc,
1366 .init = nexio_init,
1367 .exit = nexio_exit,
1368 },
1369#endif
1370#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1371 [DEVTYPE_ETOUCH] = {
1372 .min_xc = 0x0,
1373 .max_xc = 0x07ff,
1374 .min_yc = 0x0,
1375 .max_yc = 0x07ff,
1376 .rept_size = 16,
1377 .process_pkt = usbtouch_process_multi,
1378 .get_pkt_len = etouch_get_pkt_len,
1379 .read_data = etouch_read_data,
1380 },
1381#endif
1382};
1383
1384
1385
1386
1387
1388static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1389 unsigned char *pkt, int len)
1390{
1391 struct usbtouch_device_info *type = usbtouch->type;
1392
1393 if (!type->read_data(usbtouch, pkt))
1394 return;
1395
1396 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1397
1398 if (swap_xy) {
1399 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1400 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1401 } else {
1402 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1403 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1404 }
1405 if (type->max_press)
1406 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1407 input_sync(usbtouch->input);
1408}
1409
1410
1411#ifdef MULTI_PACKET
1412static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1413 unsigned char *pkt, int len)
1414{
1415 unsigned char *buffer;
1416 int pkt_len, pos, buf_len, tmp;
1417
1418
1419 if (unlikely(usbtouch->buf_len)) {
1420
1421 pkt_len = usbtouch->type->get_pkt_len(
1422 usbtouch->buffer, usbtouch->buf_len);
1423
1424
1425 if (unlikely(!pkt_len))
1426 goto out_flush_buf;
1427
1428
1429 if (unlikely(pkt_len < 0)) {
1430 int append = -pkt_len;
1431 if (unlikely(append > len))
1432 append = len;
1433 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1434 goto out_flush_buf;
1435 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1436 usbtouch->buf_len += append;
1437
1438 pkt_len = usbtouch->type->get_pkt_len(
1439 usbtouch->buffer, usbtouch->buf_len);
1440 if (pkt_len < 0)
1441 return;
1442 }
1443
1444
1445 tmp = pkt_len - usbtouch->buf_len;
1446 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1447 goto out_flush_buf;
1448 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1449 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1450
1451 buffer = pkt + tmp;
1452 buf_len = len - tmp;
1453 } else {
1454 buffer = pkt;
1455 buf_len = len;
1456 }
1457
1458
1459 pos = 0;
1460 while (pos < buf_len) {
1461
1462 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1463 buf_len - pos);
1464
1465
1466 if (unlikely(!pkt_len)) {
1467 pos++;
1468 continue;
1469 }
1470
1471
1472 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1473 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1474 } else {
1475
1476 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1477 usbtouch->buf_len = buf_len - pos;
1478 return;
1479 }
1480 pos += pkt_len;
1481 }
1482
1483out_flush_buf:
1484 usbtouch->buf_len = 0;
1485 return;
1486}
1487#endif
1488
1489
1490static void usbtouch_irq(struct urb *urb)
1491{
1492 struct usbtouch_usb *usbtouch = urb->context;
1493 struct device *dev = &usbtouch->interface->dev;
1494 int retval;
1495
1496 switch (urb->status) {
1497 case 0:
1498
1499 break;
1500 case -ETIME:
1501
1502 dev_dbg(dev,
1503 "%s - urb timed out - was the device unplugged?\n",
1504 __func__);
1505 return;
1506 case -ECONNRESET:
1507 case -ENOENT:
1508 case -ESHUTDOWN:
1509 case -EPIPE:
1510
1511 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1512 __func__, urb->status);
1513 return;
1514 default:
1515 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1516 __func__, urb->status);
1517 goto exit;
1518 }
1519
1520 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1521
1522exit:
1523 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1524 retval = usb_submit_urb(urb, GFP_ATOMIC);
1525 if (retval)
1526 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1527 __func__, retval);
1528}
1529
1530static int usbtouch_open(struct input_dev *input)
1531{
1532 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1533 int r;
1534
1535 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1536
1537 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1538 if (r < 0)
1539 goto out;
1540
1541 mutex_lock(&usbtouch->pm_mutex);
1542 if (!usbtouch->type->irq_always) {
1543 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1544 r = -EIO;
1545 goto out_put;
1546 }
1547 }
1548
1549 usbtouch->interface->needs_remote_wakeup = 1;
1550 usbtouch->is_open = true;
1551out_put:
1552 mutex_unlock(&usbtouch->pm_mutex);
1553 usb_autopm_put_interface(usbtouch->interface);
1554out:
1555 return r;
1556}
1557
1558static void usbtouch_close(struct input_dev *input)
1559{
1560 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1561 int r;
1562
1563 mutex_lock(&usbtouch->pm_mutex);
1564 if (!usbtouch->type->irq_always)
1565 usb_kill_urb(usbtouch->irq);
1566 usbtouch->is_open = false;
1567 mutex_unlock(&usbtouch->pm_mutex);
1568
1569 r = usb_autopm_get_interface(usbtouch->interface);
1570 usbtouch->interface->needs_remote_wakeup = 0;
1571 if (!r)
1572 usb_autopm_put_interface(usbtouch->interface);
1573}
1574
1575static int usbtouch_suspend
1576(struct usb_interface *intf, pm_message_t message)
1577{
1578 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1579
1580 usb_kill_urb(usbtouch->irq);
1581
1582 return 0;
1583}
1584
1585static int usbtouch_resume(struct usb_interface *intf)
1586{
1587 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1588 int result = 0;
1589
1590 mutex_lock(&usbtouch->pm_mutex);
1591 if (usbtouch->is_open || usbtouch->type->irq_always)
1592 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1593 mutex_unlock(&usbtouch->pm_mutex);
1594
1595 return result;
1596}
1597
1598static int usbtouch_reset_resume(struct usb_interface *intf)
1599{
1600 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1601 int err = 0;
1602
1603
1604 if (usbtouch->type->init) {
1605 err = usbtouch->type->init(usbtouch);
1606 if (err) {
1607 dev_dbg(&intf->dev,
1608 "%s - type->init() failed, err: %d\n",
1609 __func__, err);
1610 return err;
1611 }
1612 }
1613
1614
1615 mutex_lock(&usbtouch->pm_mutex);
1616 if (usbtouch->is_open)
1617 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1618 mutex_unlock(&usbtouch->pm_mutex);
1619
1620 return err;
1621}
1622
1623static void usbtouch_free_buffers(struct usb_device *udev,
1624 struct usbtouch_usb *usbtouch)
1625{
1626 usb_free_coherent(udev, usbtouch->data_size,
1627 usbtouch->data, usbtouch->data_dma);
1628 kfree(usbtouch->buffer);
1629}
1630
1631static struct usb_endpoint_descriptor *
1632usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1633{
1634 int i;
1635
1636 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1637 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1638 return &interface->endpoint[i].desc;
1639
1640 return NULL;
1641}
1642
1643static int usbtouch_probe(struct usb_interface *intf,
1644 const struct usb_device_id *id)
1645{
1646 struct usbtouch_usb *usbtouch;
1647 struct input_dev *input_dev;
1648 struct usb_endpoint_descriptor *endpoint;
1649 struct usb_device *udev = interface_to_usbdev(intf);
1650 struct usbtouch_device_info *type;
1651 int err = -ENOMEM;
1652
1653
1654 if (id->driver_info == DEVTYPE_IGNORE)
1655 return -ENODEV;
1656
1657 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1658 if (!endpoint)
1659 return -ENXIO;
1660
1661 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1662 input_dev = input_allocate_device();
1663 if (!usbtouch || !input_dev)
1664 goto out_free;
1665
1666 mutex_init(&usbtouch->pm_mutex);
1667
1668 type = &usbtouch_dev_info[id->driver_info];
1669 usbtouch->type = type;
1670 if (!type->process_pkt)
1671 type->process_pkt = usbtouch_process_pkt;
1672
1673 usbtouch->data_size = type->rept_size;
1674 if (type->get_pkt_len) {
1675
1676
1677
1678
1679
1680
1681
1682 usbtouch->data_size = min(usbtouch->data_size,
1683 usb_endpoint_maxp(endpoint));
1684 }
1685
1686 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1687 GFP_KERNEL, &usbtouch->data_dma);
1688 if (!usbtouch->data)
1689 goto out_free;
1690
1691 if (type->get_pkt_len) {
1692 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1693 if (!usbtouch->buffer)
1694 goto out_free_buffers;
1695 }
1696
1697 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1698 if (!usbtouch->irq) {
1699 dev_dbg(&intf->dev,
1700 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1701 goto out_free_buffers;
1702 }
1703
1704 usbtouch->interface = intf;
1705 usbtouch->input = input_dev;
1706
1707 if (udev->manufacturer)
1708 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1709
1710 if (udev->product) {
1711 if (udev->manufacturer)
1712 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1713 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1714 }
1715
1716 if (!strlen(usbtouch->name))
1717 snprintf(usbtouch->name, sizeof(usbtouch->name),
1718 "USB Touchscreen %04x:%04x",
1719 le16_to_cpu(udev->descriptor.idVendor),
1720 le16_to_cpu(udev->descriptor.idProduct));
1721
1722 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1723 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1724
1725 input_dev->name = usbtouch->name;
1726 input_dev->phys = usbtouch->phys;
1727 usb_to_input_id(udev, &input_dev->id);
1728 input_dev->dev.parent = &intf->dev;
1729
1730 input_set_drvdata(input_dev, usbtouch);
1731
1732 input_dev->open = usbtouch_open;
1733 input_dev->close = usbtouch_close;
1734
1735 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1736 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1737 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1738 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1739 if (type->max_press)
1740 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1741 type->max_press, 0, 0);
1742
1743 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1744 usb_fill_int_urb(usbtouch->irq, udev,
1745 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1746 usbtouch->data, usbtouch->data_size,
1747 usbtouch_irq, usbtouch, endpoint->bInterval);
1748 else
1749 usb_fill_bulk_urb(usbtouch->irq, udev,
1750 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1751 usbtouch->data, usbtouch->data_size,
1752 usbtouch_irq, usbtouch);
1753
1754 usbtouch->irq->dev = udev;
1755 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1756 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1757
1758
1759 if (type->alloc) {
1760 err = type->alloc(usbtouch);
1761 if (err) {
1762 dev_dbg(&intf->dev,
1763 "%s - type->alloc() failed, err: %d\n",
1764 __func__, err);
1765 goto out_free_urb;
1766 }
1767 }
1768
1769
1770 if (type->init) {
1771 err = type->init(usbtouch);
1772 if (err) {
1773 dev_dbg(&intf->dev,
1774 "%s - type->init() failed, err: %d\n",
1775 __func__, err);
1776 goto out_do_exit;
1777 }
1778 }
1779
1780 err = input_register_device(usbtouch->input);
1781 if (err) {
1782 dev_dbg(&intf->dev,
1783 "%s - input_register_device failed, err: %d\n",
1784 __func__, err);
1785 goto out_do_exit;
1786 }
1787
1788 usb_set_intfdata(intf, usbtouch);
1789
1790 if (usbtouch->type->irq_always) {
1791
1792 usb_autopm_get_interface(intf);
1793 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1794 if (err) {
1795 usb_autopm_put_interface(intf);
1796 dev_err(&intf->dev,
1797 "%s - usb_submit_urb failed with result: %d\n",
1798 __func__, err);
1799 goto out_unregister_input;
1800 }
1801 }
1802
1803 return 0;
1804
1805out_unregister_input:
1806 input_unregister_device(input_dev);
1807 input_dev = NULL;
1808out_do_exit:
1809 if (type->exit)
1810 type->exit(usbtouch);
1811out_free_urb:
1812 usb_free_urb(usbtouch->irq);
1813out_free_buffers:
1814 usbtouch_free_buffers(udev, usbtouch);
1815out_free:
1816 input_free_device(input_dev);
1817 kfree(usbtouch);
1818 return err;
1819}
1820
1821static void usbtouch_disconnect(struct usb_interface *intf)
1822{
1823 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1824
1825 if (!usbtouch)
1826 return;
1827
1828 dev_dbg(&intf->dev,
1829 "%s - usbtouch is initialized, cleaning up\n", __func__);
1830
1831 usb_set_intfdata(intf, NULL);
1832
1833 input_unregister_device(usbtouch->input);
1834 usb_free_urb(usbtouch->irq);
1835 if (usbtouch->type->exit)
1836 usbtouch->type->exit(usbtouch);
1837 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1838 kfree(usbtouch);
1839}
1840
1841MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1842
1843static struct usb_driver usbtouch_driver = {
1844 .name = "usbtouchscreen",
1845 .probe = usbtouch_probe,
1846 .disconnect = usbtouch_disconnect,
1847 .suspend = usbtouch_suspend,
1848 .resume = usbtouch_resume,
1849 .reset_resume = usbtouch_reset_resume,
1850 .id_table = usbtouch_devices,
1851 .supports_autosuspend = 1,
1852};
1853
1854module_usb_driver(usbtouch_driver);
1855
1856MODULE_AUTHOR("Daniel Ritz <daniel.ritz@gmx.ch>");
1857MODULE_DESCRIPTION("USB Touchscreen Driver");
1858MODULE_LICENSE("GPL");
1859
1860MODULE_ALIAS("touchkitusb");
1861MODULE_ALIAS("itmtouch");
1862MODULE_ALIAS("mtouchusb");
1863
