?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
sis900: remove unnecessary break after return
[linux-2.6/btrfs-unstable.git] / drivers / input / tablet / wacom_sys.c
blob2c613cd41dd68260b345141489c7c06defd94f89
1 /*
2 * drivers/input/tablet/wacom_sys.c
3 *
4 * USB Wacom tablet support - system specific code
5 */
6
7 /*
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include "wacom_wac.h"
15 #include "wacom.h"
16
17 /* defines to get HID report descriptor */
18 #define HID_DEVICET_HID (USB_TYPE_CLASS | 0x01)
19 #define HID_DEVICET_REPORT (USB_TYPE_CLASS | 0x02)
20 #define HID_USAGE_UNDEFINED 0x00
21 #define HID_USAGE_PAGE 0x05
22 #define HID_USAGE_PAGE_DIGITIZER 0x0d
23 #define HID_USAGE_PAGE_DESKTOP 0x01
24 #define HID_USAGE 0x09
25 #define HID_USAGE_X ((HID_USAGE_PAGE_DESKTOP << 16) | 0x30)
26 #define HID_USAGE_Y ((HID_USAGE_PAGE_DESKTOP << 16) | 0x31)
27 #define HID_USAGE_PRESSURE ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x30)
28 #define HID_USAGE_X_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3d)
29 #define HID_USAGE_Y_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3e)
30 #define HID_USAGE_FINGER ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x22)
31 #define HID_USAGE_STYLUS ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x20)
32 #define HID_USAGE_CONTACTMAX ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x55)
33 #define HID_COLLECTION 0xa1
34 #define HID_COLLECTION_LOGICAL 0x02
35 #define HID_COLLECTION_END 0xc0
36
37 struct hid_descriptor {
38 struct usb_descriptor_header header;
39 __le16 bcdHID;
40 u8 bCountryCode;
41 u8 bNumDescriptors;
42 u8 bDescriptorType;
43 __le16 wDescriptorLength;
44 } __attribute__ ((packed));
45
46 /* defines to get/set USB message */
47 #define USB_REQ_GET_REPORT 0x01
48 #define USB_REQ_SET_REPORT 0x09
49
50 #define WAC_HID_FEATURE_REPORT 0x03
51 #define WAC_MSG_RETRIES 5
52
53 #define WAC_CMD_LED_CONTROL 0x20
54 #define WAC_CMD_ICON_START 0x21
55 #define WAC_CMD_ICON_XFER 0x23
56 #define WAC_CMD_RETRIES 10
57
58 static int wacom_get_report(struct usb_interface *intf, u8 type, u8 id,
59 void *buf, size_t size, unsigned int retries)
60 {
61 struct usb_device *dev = interface_to_usbdev(intf);
62 int retval;
63
64 do {
65 retval = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
66 USB_REQ_GET_REPORT,
67 USB_DIR_IN | USB_TYPE_CLASS |
68 USB_RECIP_INTERFACE,
69 (type << 8) + id,
70 intf->altsetting[0].desc.bInterfaceNumber,
71 buf, size, 100);
72 } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
73
74 return retval;
75 }
76
77 static int wacom_set_report(struct usb_interface *intf, u8 type, u8 id,
78 void *buf, size_t size, unsigned int retries)
79 {
80 struct usb_device *dev = interface_to_usbdev(intf);
81 int retval;
82
83 do {
84 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
85 USB_REQ_SET_REPORT,
86 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
87 (type << 8) + id,
88 intf->altsetting[0].desc.bInterfaceNumber,
89 buf, size, 1000);
90 } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
91
92 return retval;
93 }
94
95 static void wacom_sys_irq(struct urb *urb)
96 {
97 struct wacom *wacom = urb->context;
98 struct device *dev = &wacom->intf->dev;
99 int retval;
100
101 switch (urb->status) {
102 case 0:
103 /* success */
104 break;
105 case -ECONNRESET:
106 case -ENOENT:
107 case -ESHUTDOWN:
108 /* this urb is terminated, clean up */
109 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
110 __func__, urb->status);
111 return;
112 default:
113 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
114 __func__, urb->status);
115 goto exit;
116 }
117
118 wacom_wac_irq(&wacom->wacom_wac, urb->actual_length);
119
120 exit:
121 usb_mark_last_busy(wacom->usbdev);
122 retval = usb_submit_urb(urb, GFP_ATOMIC);
123 if (retval)
124 dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
125 __func__, retval);
126 }
127
128 static int wacom_open(struct input_dev *dev)
129 {
130 struct wacom *wacom = input_get_drvdata(dev);
131 int retval = 0;
132
133 if (usb_autopm_get_interface(wacom->intf) < 0)
134 return -EIO;
135
136 mutex_lock(&wacom->lock);
137
138 if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
139 retval = -EIO;
140 goto out;
141 }
142
143 wacom->open = true;
144 wacom->intf->needs_remote_wakeup = 1;
145
146 out:
147 mutex_unlock(&wacom->lock);
148 usb_autopm_put_interface(wacom->intf);
149 return retval;
150 }
151
152 static void wacom_close(struct input_dev *dev)
153 {
154 struct wacom *wacom = input_get_drvdata(dev);
155 int autopm_error;
156
157 autopm_error = usb_autopm_get_interface(wacom->intf);
158
159 mutex_lock(&wacom->lock);
160 usb_kill_urb(wacom->irq);
161 wacom->open = false;
162 wacom->intf->needs_remote_wakeup = 0;
163 mutex_unlock(&wacom->lock);
164
165 if (!autopm_error)
166 usb_autopm_put_interface(wacom->intf);
167 }
168
169 /*
170 * Calculate the resolution of the X or Y axis, given appropriate HID data.
171 * This function is little more than hidinput_calc_abs_res stripped down.
172 */
173 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
174 unsigned char unit, unsigned char exponent)
175 {
176 int prev, unit_exponent;
177
178 /* Check if the extents are sane */
179 if (logical_extents <= 0 || physical_extents <= 0)
180 return 0;
181
182 /* Get signed value of nybble-sized twos-compliment exponent */
183 unit_exponent = exponent;
184 if (unit_exponent > 7)
185 unit_exponent -= 16;
186
187 /* Convert physical_extents to millimeters */
188 if (unit == 0x11) { /* If centimeters */
189 unit_exponent += 1;
190 } else if (unit == 0x13) { /* If inches */
191 prev = physical_extents;
192 physical_extents *= 254;
193 if (physical_extents < prev)
194 return 0;
195 unit_exponent -= 1;
196 } else {
197 return 0;
198 }
199
200 /* Apply negative unit exponent */
201 for (; unit_exponent < 0; unit_exponent++) {
202 prev = logical_extents;
203 logical_extents *= 10;
204 if (logical_extents < prev)
205 return 0;
206 }
207 /* Apply positive unit exponent */
208 for (; unit_exponent > 0; unit_exponent--) {
209 prev = physical_extents;
210 physical_extents *= 10;
211 if (physical_extents < prev)
212 return 0;
213 }
214
215 /* Calculate resolution */
216 return logical_extents / physical_extents;
217 }
218
219 static int wacom_parse_logical_collection(unsigned char *report,
220 struct wacom_features *features)
221 {
222 int length = 0;
223
224 if (features->type == BAMBOO_PT) {
225
226 /* Logical collection is only used by 3rd gen Bamboo Touch */
227 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
228 features->device_type = BTN_TOOL_FINGER;
229
230 features->x_max = features->y_max =
231 get_unaligned_le16(&report[10]);
232
233 length = 11;
234 }
235 return length;
236 }
237
238 static void wacom_retrieve_report_data(struct usb_interface *intf,
239 struct wacom_features *features)
240 {
241 int result = 0;
242 unsigned char *rep_data;
243
244 rep_data = kmalloc(2, GFP_KERNEL);
245 if (rep_data) {
246
247 rep_data[0] = 12;
248 result = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
249 rep_data[0], rep_data, 2,
250 WAC_MSG_RETRIES);
251
252 if (result >= 0 && rep_data[1] > 2)
253 features->touch_max = rep_data[1];
254
255 kfree(rep_data);
256 }
257 }
258
259 /*
260 * Interface Descriptor of wacom devices can be incomplete and
261 * inconsistent so wacom_features table is used to store stylus
262 * device's packet lengths, various maximum values, and tablet
263 * resolution based on product ID's.
264 *
265 * For devices that contain 2 interfaces, wacom_features table is
266 * inaccurate for the touch interface. Since the Interface Descriptor
267 * for touch interfaces has pretty complete data, this function exists
268 * to query tablet for this missing information instead of hard coding in
269 * an additional table.
270 *
271 * A typical Interface Descriptor for a stylus will contain a
272 * boot mouse application collection that is not of interest and this
273 * function will ignore it.
274 *
275 * It also contains a digitizer application collection that also is not
276 * of interest since any information it contains would be duplicate
277 * of what is in wacom_features. Usually it defines a report of an array
278 * of bytes that could be used as max length of the stylus packet returned.
279 * If it happens to define a Digitizer-Stylus Physical Collection then
280 * the X and Y logical values contain valid data but it is ignored.
281 *
282 * A typical Interface Descriptor for a touch interface will contain a
283 * Digitizer-Finger Physical Collection which will define both logical
284 * X/Y maximum as well as the physical size of tablet. Since touch
285 * interfaces haven't supported pressure or distance, this is enough
286 * information to override invalid values in the wacom_features table.
287 *
288 * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
289 * Collection. Instead they define a Logical Collection with a single
290 * Logical Maximum for both X and Y.
291 *
292 * Intuos5 touch interface does not contain useful data. We deal with
293 * this after returning from this function.
294 */
295 static int wacom_parse_hid(struct usb_interface *intf,
296 struct hid_descriptor *hid_desc,
297 struct wacom_features *features)
298 {
299 struct usb_device *dev = interface_to_usbdev(intf);
300 char limit = 0;
301 /* result has to be defined as int for some devices */
302 int result = 0, touch_max = 0;
303 int i = 0, page = 0, finger = 0, pen = 0;
304 unsigned char *report;
305
306 report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
307 if (!report)
308 return -ENOMEM;
309
310 /* retrive report descriptors */
311 do {
312 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
313 USB_REQ_GET_DESCRIPTOR,
314 USB_RECIP_INTERFACE | USB_DIR_IN,
315 HID_DEVICET_REPORT << 8,
316 intf->altsetting[0].desc.bInterfaceNumber, /* interface */
317 report,
318 hid_desc->wDescriptorLength,
319 5000); /* 5 secs */
320 } while (result < 0 && limit++ < WAC_MSG_RETRIES);
321
322 /* No need to parse the Descriptor. It isn't an error though */
323 if (result < 0)
324 goto out;
325
326 for (i = 0; i < hid_desc->wDescriptorLength; i++) {
327
328 switch (report[i]) {
329 case HID_USAGE_PAGE:
330 page = report[i + 1];
331 i++;
332 break;
333
334 case HID_USAGE:
335 switch (page << 16 | report[i + 1]) {
336 case HID_USAGE_X:
337 if (finger) {
338 features->device_type = BTN_TOOL_FINGER;
339 /* touch device at least supports one touch point */
340 touch_max = 1;
341 switch (features->type) {
342 case TABLETPC2FG:
343 features->pktlen = WACOM_PKGLEN_TPC2FG;
344 break;
345
346 case MTSCREEN:
347 case WACOM_24HDT:
348 features->pktlen = WACOM_PKGLEN_MTOUCH;
349 break;
350
351 case MTTPC:
352 case MTTPC_B:
353 features->pktlen = WACOM_PKGLEN_MTTPC;
354 break;
355
356 case BAMBOO_PT:
357 features->pktlen = WACOM_PKGLEN_BBTOUCH;
358 break;
359
360 default:
361 features->pktlen = WACOM_PKGLEN_GRAPHIRE;
362 break;
363 }
364
365 switch (features->type) {
366 case BAMBOO_PT:
367 features->x_phy =
368 get_unaligned_le16(&report[i + 5]);
369 features->x_max =
370 get_unaligned_le16(&report[i + 8]);
371 i += 15;
372 break;
373
374 case WACOM_24HDT:
375 features->x_max =
376 get_unaligned_le16(&report[i + 3]);
377 features->x_phy =
378 get_unaligned_le16(&report[i + 8]);
379 features->unit = report[i - 1];
380 features->unitExpo = report[i - 3];
381 i += 12;
382 break;
383
384 case MTTPC_B:
385 features->x_max =
386 get_unaligned_le16(&report[i + 3]);
387 features->x_phy =
388 get_unaligned_le16(&report[i + 6]);
389 features->unit = report[i - 5];
390 features->unitExpo = report[i - 3];
391 i += 9;
392 break;
393
394 default:
395 features->x_max =
396 get_unaligned_le16(&report[i + 3]);
397 features->x_phy =
398 get_unaligned_le16(&report[i + 6]);
399 features->unit = report[i + 9];
400 features->unitExpo = report[i + 11];
401 i += 12;
402 break;
403 }
404 } else if (pen) {
405 /* penabled only accepts exact bytes of data */
406 if (features->type >= TABLETPC)
407 features->pktlen = WACOM_PKGLEN_GRAPHIRE;
408 features->device_type = BTN_TOOL_PEN;
409 features->x_max =
410 get_unaligned_le16(&report[i + 3]);
411 i += 4;
412 }
413 break;
414
415 case HID_USAGE_Y:
416 if (finger) {
417 switch (features->type) {
418 case TABLETPC2FG:
419 case MTSCREEN:
420 case MTTPC:
421 features->y_max =
422 get_unaligned_le16(&report[i + 3]);
423 features->y_phy =
424 get_unaligned_le16(&report[i + 6]);
425 i += 7;
426 break;
427
428 case WACOM_24HDT:
429 features->y_max =
430 get_unaligned_le16(&report[i + 3]);
431 features->y_phy =
432 get_unaligned_le16(&report[i - 2]);
433 i += 7;
434 break;
435
436 case BAMBOO_PT:
437 features->y_phy =
438 get_unaligned_le16(&report[i + 3]);
439 features->y_max =
440 get_unaligned_le16(&report[i + 6]);
441 i += 12;
442 break;
443
444 case MTTPC_B:
445 features->y_max =
446 get_unaligned_le16(&report[i + 3]);
447 features->y_phy =
448 get_unaligned_le16(&report[i + 6]);
449 i += 9;
450 break;
451
452 default:
453 features->y_max =
454 features->x_max;
455 features->y_phy =
456 get_unaligned_le16(&report[i + 3]);
457 i += 4;
458 break;
459 }
460 } else if (pen) {
461 features->y_max =
462 get_unaligned_le16(&report[i + 3]);
463 i += 4;
464 }
465 break;
466
467 case HID_USAGE_FINGER:
468 finger = 1;
469 i++;
470 break;
471
472 /*
473 * Requiring Stylus Usage will ignore boot mouse
474 * X/Y values and some cases of invalid Digitizer X/Y
475 * values commonly reported.
476 */
477 case HID_USAGE_STYLUS:
478 pen = 1;
479 i++;
480 break;
481
482 case HID_USAGE_CONTACTMAX:
483 /* leave touch_max as is if predefined */
484 if (!features->touch_max)
485 wacom_retrieve_report_data(intf, features);
486 i++;
487 break;
488
489 case HID_USAGE_PRESSURE:
490 if (pen) {
491 features->pressure_max =
492 get_unaligned_le16(&report[i + 3]);
493 i += 4;
494 }
495 break;
496 }
497 break;
498
499 case HID_COLLECTION_END:
500 /* reset UsagePage and Finger */
501 finger = page = 0;
502 break;
503
504 case HID_COLLECTION:
505 i++;
506 switch (report[i]) {
507 case HID_COLLECTION_LOGICAL:
508 i += wacom_parse_logical_collection(&report[i],
509 features);
510 break;
511 }
512 break;
513 }
514 }
515
516 out:
517 if (!features->touch_max && touch_max)
518 features->touch_max = touch_max;
519 result = 0;
520 kfree(report);
521 return result;
522 }
523
524 static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int length, int mode)
525 {
526 unsigned char *rep_data;
527 int error = -ENOMEM, limit = 0;
528
529 rep_data = kzalloc(length, GFP_KERNEL);
530 if (!rep_data)
531 return error;
532
533 do {
534 rep_data[0] = report_id;
535 rep_data[1] = mode;
536
537 error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
538 report_id, rep_data, length, 1);
539 } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
540
541 kfree(rep_data);
542
543 return error < 0 ? error : 0;
544 }
545
546 /*
547 * Switch the tablet into its most-capable mode. Wacom tablets are
548 * typically configured to power-up in a mode which sends mouse-like
549 * reports to the OS. To get absolute position, pressure data, etc.
550 * from the tablet, it is necessary to switch the tablet out of this
551 * mode and into one which sends the full range of tablet data.
552 */
553 static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features)
554 {
555 if (features->device_type == BTN_TOOL_FINGER) {
556 if (features->type > TABLETPC) {
557 /* MT Tablet PC touch */
558 return wacom_set_device_mode(intf, 3, 4, 4);
559 }
560 else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
561 return wacom_set_device_mode(intf, 18, 3, 2);
562 }
563 } else if (features->device_type == BTN_TOOL_PEN) {
564 if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
565 return wacom_set_device_mode(intf, 2, 2, 2);
566 }
567 }
568
569 return 0;
570 }
571
572 static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
573 struct wacom_features *features)
574 {
575 int error = 0;
576 struct usb_host_interface *interface = intf->cur_altsetting;
577 struct hid_descriptor *hid_desc;
578
579 /* default features */
580 features->device_type = BTN_TOOL_PEN;
581 features->x_fuzz = 4;
582 features->y_fuzz = 4;
583 features->pressure_fuzz = 0;
584 features->distance_fuzz = 0;
585
586 /*
587 * The wireless device HID is basic and layout conflicts with
588 * other tablets (monitor and touch interface can look like pen).
589 * Skip the query for this type and modify defaults based on
590 * interface number.
591 */
592 if (features->type == WIRELESS) {
593 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
594 features->device_type = 0;
595 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
596 features->device_type = BTN_TOOL_FINGER;
597 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
598 }
599 }
600
601 /* only devices that support touch need to retrieve the info */
602 if (features->type < BAMBOO_PT) {
603 goto out;
604 }
605
606 error = usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc);
607 if (error) {
608 error = usb_get_extra_descriptor(&interface->endpoint[0],
609 HID_DEVICET_REPORT, &hid_desc);
610 if (error) {
611 dev_err(&intf->dev,
612 "can not retrieve extra class descriptor\n");
613 goto out;
614 }
615 }
616 error = wacom_parse_hid(intf, hid_desc, features);
617
618 out:
619 return error;
620 }
621
622 struct wacom_usbdev_data {
623 struct list_head list;
624 struct kref kref;
625 struct usb_device *dev;
626 struct wacom_shared shared;
627 };
628
629 static LIST_HEAD(wacom_udev_list);
630 static DEFINE_MUTEX(wacom_udev_list_lock);
631
632 static struct usb_device *wacom_get_sibling(struct usb_device *dev, int vendor, int product)
633 {
634 int port1;
635 struct usb_device *sibling;
636
637 if (vendor == 0 && product == 0)
638 return dev;
639
640 if (dev->parent == NULL)
641 return NULL;
642
643 usb_hub_for_each_child(dev->parent, port1, sibling) {
644 struct usb_device_descriptor *d;
645 if (sibling == NULL)
646 continue;
647
648 d = &sibling->descriptor;
649 if (d->idVendor == vendor && d->idProduct == product)
650 return sibling;
651 }
652
653 return NULL;
654 }
655
656 static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
657 {
658 struct wacom_usbdev_data *data;
659
660 list_for_each_entry(data, &wacom_udev_list, list) {
661 if (data->dev == dev) {
662 kref_get(&data->kref);
663 return data;
664 }
665 }
666
667 return NULL;
668 }
669
670 static int wacom_add_shared_data(struct wacom_wac *wacom,
671 struct usb_device *dev)
672 {
673 struct wacom_usbdev_data *data;
674 int retval = 0;
675
676 mutex_lock(&wacom_udev_list_lock);
677
678 data = wacom_get_usbdev_data(dev);
679 if (!data) {
680 data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL);
681 if (!data) {
682 retval = -ENOMEM;
683 goto out;
684 }
685
686 kref_init(&data->kref);
687 data->dev = dev;
688 list_add_tail(&data->list, &wacom_udev_list);
689 }
690
691 wacom->shared = &data->shared;
692
693 out:
694 mutex_unlock(&wacom_udev_list_lock);
695 return retval;
696 }
697
698 static void wacom_release_shared_data(struct kref *kref)
699 {
700 struct wacom_usbdev_data *data =
701 container_of(kref, struct wacom_usbdev_data, kref);
702
703 mutex_lock(&wacom_udev_list_lock);
704 list_del(&data->list);
705 mutex_unlock(&wacom_udev_list_lock);
706
707 kfree(data);
708 }
709
710 static void wacom_remove_shared_data(struct wacom_wac *wacom)
711 {
712 struct wacom_usbdev_data *data;
713
714 if (wacom->shared) {
715 data = container_of(wacom->shared, struct wacom_usbdev_data, shared);
716 kref_put(&data->kref, wacom_release_shared_data);
717 wacom->shared = NULL;
718 }
719 }
720
721 static int wacom_led_control(struct wacom *wacom)
722 {
723 unsigned char *buf;
724 int retval;
725
726 buf = kzalloc(9, GFP_KERNEL);
727 if (!buf)
728 return -ENOMEM;
729
730 if (wacom->wacom_wac.features.type >= INTUOS5S &&
731 wacom->wacom_wac.features.type <= INTUOSPL) {
732 /*
733 * Touch Ring and crop mark LED luminance may take on
734 * one of four values:
735 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
736 */
737 int ring_led = wacom->led.select[0] & 0x03;
738 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
739 int crop_lum = 0;
740
741 buf[0] = WAC_CMD_LED_CONTROL;
742 buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
743 }
744 else {
745 int led = wacom->led.select[0] | 0x4;
746
747 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
748 wacom->wacom_wac.features.type == WACOM_24HD)
749 led |= (wacom->led.select[1] << 4) | 0x40;
750
751 buf[0] = WAC_CMD_LED_CONTROL;
752 buf[1] = led;
753 buf[2] = wacom->led.llv;
754 buf[3] = wacom->led.hlv;
755 buf[4] = wacom->led.img_lum;
756 }
757
758 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL,
759 buf, 9, WAC_CMD_RETRIES);
760 kfree(buf);
761
762 return retval;
763 }
764
765 static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img)
766 {
767 unsigned char *buf;
768 int i, retval;
769
770 buf = kzalloc(259, GFP_KERNEL);
771 if (!buf)
772 return -ENOMEM;
773
774 /* Send 'start' command */
775 buf[0] = WAC_CMD_ICON_START;
776 buf[1] = 1;
777 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
778 buf, 2, WAC_CMD_RETRIES);
779 if (retval < 0)
780 goto out;
781
782 buf[0] = WAC_CMD_ICON_XFER;
783 buf[1] = button_id & 0x07;
784 for (i = 0; i < 4; i++) {
785 buf[2] = i;
786 memcpy(buf + 3, img + i * 256, 256);
787
788 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER,
789 buf, 259, WAC_CMD_RETRIES);
790 if (retval < 0)
791 break;
792 }
793
794 /* Send 'stop' */
795 buf[0] = WAC_CMD_ICON_START;
796 buf[1] = 0;
797 wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
798 buf, 2, WAC_CMD_RETRIES);
799
800 out:
801 kfree(buf);
802 return retval;
803 }
804
805 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
806 const char *buf, size_t count)
807 {
808 struct wacom *wacom = dev_get_drvdata(dev);
809 unsigned int id;
810 int err;
811
812 err = kstrtouint(buf, 10, &id);
813 if (err)
814 return err;
815
816 mutex_lock(&wacom->lock);
817
818 wacom->led.select[set_id] = id & 0x3;
819 err = wacom_led_control(wacom);
820
821 mutex_unlock(&wacom->lock);
822
823 return err < 0 ? err : count;
824 }
825
826 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
827 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
828 struct device_attribute *attr, const char *buf, size_t count) \
829 { \
830 return wacom_led_select_store(dev, SET_ID, buf, count); \
831 } \
832 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
833 struct device_attribute *attr, char *buf) \
834 { \
835 struct wacom *wacom = dev_get_drvdata(dev); \
836 return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
837 } \
838 static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
839 wacom_led##SET_ID##_select_show, \
840 wacom_led##SET_ID##_select_store)
841
842 DEVICE_LED_SELECT_ATTR(0);
843 DEVICE_LED_SELECT_ATTR(1);
844
845 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
846 const char *buf, size_t count)
847 {
848 unsigned int value;
849 int err;
850
851 err = kstrtouint(buf, 10, &value);
852 if (err)
853 return err;
854
855 mutex_lock(&wacom->lock);
856
857 *dest = value & 0x7f;
858 err = wacom_led_control(wacom);
859
860 mutex_unlock(&wacom->lock);
861
862 return err < 0 ? err : count;
863 }
864
865 #define DEVICE_LUMINANCE_ATTR(name, field) \
866 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
867 struct device_attribute *attr, const char *buf, size_t count) \
868 { \
869 struct wacom *wacom = dev_get_drvdata(dev); \
870 \
871 return wacom_luminance_store(wacom, &wacom->led.field, \
872 buf, count); \
873 } \
874 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
875 NULL, wacom_##name##_luminance_store)
876
877 DEVICE_LUMINANCE_ATTR(status0, llv);
878 DEVICE_LUMINANCE_ATTR(status1, hlv);
879 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
880
881 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
882 const char *buf, size_t count)
883 {
884 struct wacom *wacom = dev_get_drvdata(dev);
885 int err;
886
887 if (count != 1024)
888 return -EINVAL;
889
890 mutex_lock(&wacom->lock);
891
892 err = wacom_led_putimage(wacom, button_id, buf);
893
894 mutex_unlock(&wacom->lock);
895
896 return err < 0 ? err : count;
897 }
898
899 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
900 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
901 struct device_attribute *attr, const char *buf, size_t count) \
902 { \
903 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
904 } \
905 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
906 NULL, wacom_btnimg##BUTTON_ID##_store)
907
908 DEVICE_BTNIMG_ATTR(0);
909 DEVICE_BTNIMG_ATTR(1);
910 DEVICE_BTNIMG_ATTR(2);
911 DEVICE_BTNIMG_ATTR(3);
912 DEVICE_BTNIMG_ATTR(4);
913 DEVICE_BTNIMG_ATTR(5);
914 DEVICE_BTNIMG_ATTR(6);
915 DEVICE_BTNIMG_ATTR(7);
916
917 static struct attribute *cintiq_led_attrs[] = {
918 &dev_attr_status_led0_select.attr,
919 &dev_attr_status_led1_select.attr,
920 NULL
921 };
922
923 static struct attribute_group cintiq_led_attr_group = {
924 .name = "wacom_led",
925 .attrs = cintiq_led_attrs,
926 };
927
928 static struct attribute *intuos4_led_attrs[] = {
929 &dev_attr_status0_luminance.attr,
930 &dev_attr_status1_luminance.attr,
931 &dev_attr_status_led0_select.attr,
932 &dev_attr_buttons_luminance.attr,
933 &dev_attr_button0_rawimg.attr,
934 &dev_attr_button1_rawimg.attr,
935 &dev_attr_button2_rawimg.attr,
936 &dev_attr_button3_rawimg.attr,
937 &dev_attr_button4_rawimg.attr,
938 &dev_attr_button5_rawimg.attr,
939 &dev_attr_button6_rawimg.attr,
940 &dev_attr_button7_rawimg.attr,
941 NULL
942 };
943
944 static struct attribute_group intuos4_led_attr_group = {
945 .name = "wacom_led",
946 .attrs = intuos4_led_attrs,
947 };
948
949 static struct attribute *intuos5_led_attrs[] = {
950 &dev_attr_status0_luminance.attr,
951 &dev_attr_status_led0_select.attr,
952 NULL
953 };
954
955 static struct attribute_group intuos5_led_attr_group = {
956 .name = "wacom_led",
957 .attrs = intuos5_led_attrs,
958 };
959
960 static int wacom_initialize_leds(struct wacom *wacom)
961 {
962 int error;
963
964 /* Initialize default values */
965 switch (wacom->wacom_wac.features.type) {
966 case INTUOS4S:
967 case INTUOS4:
968 case INTUOS4L:
969 wacom->led.select[0] = 0;
970 wacom->led.select[1] = 0;
971 wacom->led.llv = 10;
972 wacom->led.hlv = 20;
973 wacom->led.img_lum = 10;
974 error = sysfs_create_group(&wacom->intf->dev.kobj,
975 &intuos4_led_attr_group);
976 break;
977
978 case WACOM_24HD:
979 case WACOM_21UX2:
980 wacom->led.select[0] = 0;
981 wacom->led.select[1] = 0;
982 wacom->led.llv = 0;
983 wacom->led.hlv = 0;
984 wacom->led.img_lum = 0;
985
986 error = sysfs_create_group(&wacom->intf->dev.kobj,
987 &cintiq_led_attr_group);
988 break;
989
990 case INTUOS5S:
991 case INTUOS5:
992 case INTUOS5L:
993 case INTUOSPS:
994 case INTUOSPM:
995 case INTUOSPL:
996 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
997 wacom->led.select[0] = 0;
998 wacom->led.select[1] = 0;
999 wacom->led.llv = 32;
1000 wacom->led.hlv = 0;
1001 wacom->led.img_lum = 0;
1002
1003 error = sysfs_create_group(&wacom->intf->dev.kobj,
1004 &intuos5_led_attr_group);
1005 } else
1006 return 0;
1007 break;
1008
1009 default:
1010 return 0;
1011 }
1012
1013 if (error) {
1014 dev_err(&wacom->intf->dev,
1015 "cannot create sysfs group err: %d\n", error);
1016 return error;
1017 }
1018 wacom_led_control(wacom);
1019
1020 return 0;
1021 }
1022
1023 static void wacom_destroy_leds(struct wacom *wacom)
1024 {
1025 switch (wacom->wacom_wac.features.type) {
1026 case INTUOS4S:
1027 case INTUOS4:
1028 case INTUOS4L:
1029 sysfs_remove_group(&wacom->intf->dev.kobj,
1030 &intuos4_led_attr_group);
1031 break;
1032
1033 case WACOM_24HD:
1034 case WACOM_21UX2:
1035 sysfs_remove_group(&wacom->intf->dev.kobj,
1036 &cintiq_led_attr_group);
1037 break;
1038
1039 case INTUOS5S:
1040 case INTUOS5:
1041 case INTUOS5L:
1042 case INTUOSPS:
1043 case INTUOSPM:
1044 case INTUOSPL:
1045 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
1046 sysfs_remove_group(&wacom->intf->dev.kobj,
1047 &intuos5_led_attr_group);
1048 break;
1049 }
1050 }
1051
1052 static enum power_supply_property wacom_battery_props[] = {
1053 POWER_SUPPLY_PROP_SCOPE,
1054 POWER_SUPPLY_PROP_CAPACITY
1055 };
1056
1057 static int wacom_battery_get_property(struct power_supply *psy,
1058 enum power_supply_property psp,
1059 union power_supply_propval *val)
1060 {
1061 struct wacom *wacom = container_of(psy, struct wacom, battery);
1062 int ret = 0;
1063
1064 switch (psp) {
1065 case POWER_SUPPLY_PROP_SCOPE:
1066 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1067 break;
1068 case POWER_SUPPLY_PROP_CAPACITY:
1069 val->intval =
1070 wacom->wacom_wac.battery_capacity * 100 / 31;
1071 break;
1072 default:
1073 ret = -EINVAL;
1074 break;
1075 }
1076
1077 return ret;
1078 }
1079
1080 static int wacom_initialize_battery(struct wacom *wacom)
1081 {
1082 int error = 0;
1083
1084 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) {
1085 wacom->battery.properties = wacom_battery_props;
1086 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
1087 wacom->battery.get_property = wacom_battery_get_property;
1088 wacom->battery.name = "wacom_battery";
1089 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1090 wacom->battery.use_for_apm = 0;
1091
1092 error = power_supply_register(&wacom->usbdev->dev,
1093 &wacom->battery);
1094
1095 if (!error)
1096 power_supply_powers(&wacom->battery,
1097 &wacom->usbdev->dev);
1098 }
1099
1100 return error;
1101 }
1102
1103 static void wacom_destroy_battery(struct wacom *wacom)
1104 {
1105 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR &&
1106 wacom->battery.dev) {
1107 power_supply_unregister(&wacom->battery);
1108 wacom->battery.dev = NULL;
1109 }
1110 }
1111
1112 static int wacom_register_input(struct wacom *wacom)
1113 {
1114 struct input_dev *input_dev;
1115 struct usb_interface *intf = wacom->intf;
1116 struct usb_device *dev = interface_to_usbdev(intf);
1117 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1118 int error;
1119
1120 input_dev = input_allocate_device();
1121 if (!input_dev) {
1122 error = -ENOMEM;
1123 goto fail1;
1124 }
1125
1126 input_dev->name = wacom_wac->name;
1127 input_dev->dev.parent = &intf->dev;
1128 input_dev->open = wacom_open;
1129 input_dev->close = wacom_close;
1130 usb_to_input_id(dev, &input_dev->id);
1131 input_set_drvdata(input_dev, wacom);
1132
1133 wacom_wac->input = input_dev;
1134 error = wacom_setup_input_capabilities(input_dev, wacom_wac);
1135 if (error)
1136 goto fail1;
1137
1138 error = input_register_device(input_dev);
1139 if (error)
1140 goto fail2;
1141
1142 return 0;
1143
1144 fail2:
1145 input_free_device(input_dev);
1146 wacom_wac->input = NULL;
1147 fail1:
1148 return error;
1149 }
1150
1151 static void wacom_wireless_work(struct work_struct *work)
1152 {
1153 struct wacom *wacom = container_of(work, struct wacom, work);
1154 struct usb_device *usbdev = wacom->usbdev;
1155 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1156 struct wacom *wacom1, *wacom2;
1157 struct wacom_wac *wacom_wac1, *wacom_wac2;
1158 int error;
1159
1160 /*
1161 * Regardless if this is a disconnect or a new tablet,
1162 * remove any existing input and battery devices.
1163 */
1164
1165 wacom_destroy_battery(wacom);
1166
1167 /* Stylus interface */
1168 wacom1 = usb_get_intfdata(usbdev->config->interface[1]);
1169 wacom_wac1 = &(wacom1->wacom_wac);
1170 if (wacom_wac1->input)
1171 input_unregister_device(wacom_wac1->input);
1172 wacom_wac1->input = NULL;
1173
1174 /* Touch interface */
1175 wacom2 = usb_get_intfdata(usbdev->config->interface[2]);
1176 wacom_wac2 = &(wacom2->wacom_wac);
1177 if (wacom_wac2->input)
1178 input_unregister_device(wacom_wac2->input);
1179 wacom_wac2->input = NULL;
1180
1181 if (wacom_wac->pid == 0) {
1182 dev_info(&wacom->intf->dev, "wireless tablet disconnected\n");
1183 } else {
1184 const struct usb_device_id *id = wacom_ids;
1185
1186 dev_info(&wacom->intf->dev,
1187 "wireless tablet connected with PID %x\n",
1188 wacom_wac->pid);
1189
1190 while (id->match_flags) {
1191 if (id->idVendor == USB_VENDOR_ID_WACOM &&
1192 id->idProduct == wacom_wac->pid)
1193 break;
1194 id++;
1195 }
1196
1197 if (!id->match_flags) {
1198 dev_info(&wacom->intf->dev,
1199 "ignoring unknown PID.\n");
1200 return;
1201 }
1202
1203 /* Stylus interface */
1204 wacom_wac1->features =
1205 *((struct wacom_features *)id->driver_info);
1206 wacom_wac1->features.device_type = BTN_TOOL_PEN;
1207 snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
1208 wacom_wac1->features.name);
1209 wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
1210 wacom_wac1->shared->type = wacom_wac1->features.type;
1211 error = wacom_register_input(wacom1);
1212 if (error)
1213 goto fail;
1214
1215 /* Touch interface */
1216 if (wacom_wac1->features.touch_max ||
1217 wacom_wac1->features.type == INTUOSHT) {
1218 wacom_wac2->features =
1219 *((struct wacom_features *)id->driver_info);
1220 wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1221 wacom_wac2->features.device_type = BTN_TOOL_FINGER;
1222 wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1223 if (wacom_wac2->features.touch_max)
1224 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1225 "%s (WL) Finger",wacom_wac2->features.name);
1226 else
1227 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1228 "%s (WL) Pad",wacom_wac2->features.name);
1229 error = wacom_register_input(wacom2);
1230 if (error)
1231 goto fail;
1232
1233 if (wacom_wac1->features.type == INTUOSHT &&
1234 wacom_wac1->features.touch_max)
1235 wacom_wac->shared->touch_input = wacom_wac2->input;
1236 }
1237
1238 error = wacom_initialize_battery(wacom);
1239 if (error)
1240 goto fail;
1241 }
1242
1243 return;
1244
1245 fail:
1246 if (wacom_wac2->input) {
1247 input_unregister_device(wacom_wac2->input);
1248 wacom_wac2->input = NULL;
1249 }
1250
1251 if (wacom_wac1->input) {
1252 input_unregister_device(wacom_wac1->input);
1253 wacom_wac1->input = NULL;
1254 }
1255 return;
1256 }
1257
1258 /*
1259 * Not all devices report physical dimensions from HID.
1260 * Compute the default from hardcoded logical dimension
1261 * and resolution before driver overwrites them.
1262 */
1263 static void wacom_set_default_phy(struct wacom_features *features)
1264 {
1265 if (features->x_resolution) {
1266 features->x_phy = (features->x_max * 100) /
1267 features->x_resolution;
1268 features->y_phy = (features->y_max * 100) /
1269 features->y_resolution;
1270 }
1271 }
1272
1273 static void wacom_calculate_res(struct wacom_features *features)
1274 {
1275 features->x_resolution = wacom_calc_hid_res(features->x_max,
1276 features->x_phy,
1277 features->unit,
1278 features->unitExpo);
1279 features->y_resolution = wacom_calc_hid_res(features->y_max,
1280 features->y_phy,
1281 features->unit,
1282 features->unitExpo);
1283 }
1284
1285 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
1286 {
1287 struct usb_device *dev = interface_to_usbdev(intf);
1288 struct usb_endpoint_descriptor *endpoint;
1289 struct wacom *wacom;
1290 struct wacom_wac *wacom_wac;
1291 struct wacom_features *features;
1292 int error;
1293
1294 if (!id->driver_info)
1295 return -EINVAL;
1296
1297 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1298 if (!wacom)
1299 return -ENOMEM;
1300
1301 wacom_wac = &wacom->wacom_wac;
1302 wacom_wac->features = *((struct wacom_features *)id->driver_info);
1303 features = &wacom_wac->features;
1304 if (features->pktlen > WACOM_PKGLEN_MAX) {
1305 error = -EINVAL;
1306 goto fail1;
1307 }
1308
1309 wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX,
1310 GFP_KERNEL, &wacom->data_dma);
1311 if (!wacom_wac->data) {
1312 error = -ENOMEM;
1313 goto fail1;
1314 }
1315
1316 wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
1317 if (!wacom->irq) {
1318 error = -ENOMEM;
1319 goto fail2;
1320 }
1321
1322 wacom->usbdev = dev;
1323 wacom->intf = intf;
1324 mutex_init(&wacom->lock);
1325 INIT_WORK(&wacom->work, wacom_wireless_work);
1326 usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
1327 strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
1328
1329 endpoint = &intf->cur_altsetting->endpoint[0].desc;
1330
1331 /* set the default size in case we do not get them from hid */
1332 wacom_set_default_phy(features);
1333
1334 /* Retrieve the physical and logical size for touch devices */
1335 error = wacom_retrieve_hid_descriptor(intf, features);
1336 if (error)
1337 goto fail3;
1338
1339 /*
1340 * Intuos5 has no useful data about its touch interface in its
1341 * HID descriptor. If this is the touch interface (wMaxPacketSize
1342 * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1343 */
1344 if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
1345 if (endpoint->wMaxPacketSize == WACOM_PKGLEN_BBTOUCH3) {
1346 features->device_type = BTN_TOOL_FINGER;
1347 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
1348
1349 features->x_max = 4096;
1350 features->y_max = 4096;
1351 } else {
1352 features->device_type = BTN_TOOL_PEN;
1353 }
1354 }
1355
1356 wacom_setup_device_quirks(features);
1357
1358 /* set unit to "100th of a mm" for devices not reported by HID */
1359 if (!features->unit) {
1360 features->unit = 0x11;
1361 features->unitExpo = 16 - 3;
1362 }
1363 wacom_calculate_res(features);
1364
1365 strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1366
1367 if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1368 struct usb_device *other_dev;
1369
1370 /* Append the device type to the name */
1371 if (features->device_type != BTN_TOOL_FINGER)
1372 strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
1373 else if (features->touch_max)
1374 strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
1375 else
1376 strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
1377
1378 other_dev = wacom_get_sibling(dev, features->oVid, features->oPid);
1379 if (other_dev == NULL || wacom_get_usbdev_data(other_dev) == NULL)
1380 other_dev = dev;
1381 error = wacom_add_shared_data(wacom_wac, other_dev);
1382 if (error)
1383 goto fail3;
1384 }
1385
1386 usb_fill_int_urb(wacom->irq, dev,
1387 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
1388 wacom_wac->data, features->pktlen,
1389 wacom_sys_irq, wacom, endpoint->bInterval);
1390 wacom->irq->transfer_dma = wacom->data_dma;
1391 wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1392
1393 error = wacom_initialize_leds(wacom);
1394 if (error)
1395 goto fail4;
1396
1397 if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1398 error = wacom_register_input(wacom);
1399 if (error)
1400 goto fail5;
1401 }
1402
1403 /* Note that if query fails it is not a hard failure */
1404 wacom_query_tablet_data(intf, features);
1405
1406 usb_set_intfdata(intf, wacom);
1407
1408 if (features->quirks & WACOM_QUIRK_MONITOR) {
1409 if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
1410 error = -EIO;
1411 goto fail5;
1412 }
1413 }
1414
1415 if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
1416 if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
1417 wacom_wac->shared->touch_input = wacom_wac->input;
1418 }
1419
1420 return 0;
1421
1422 fail5: wacom_destroy_leds(wacom);
1423 fail4: wacom_remove_shared_data(wacom_wac);
1424 fail3: usb_free_urb(wacom->irq);
1425 fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
1426 fail1: kfree(wacom);
1427 return error;
1428 }
1429
1430 static void wacom_disconnect(struct usb_interface *intf)
1431 {
1432 struct wacom *wacom = usb_get_intfdata(intf);
1433
1434 usb_set_intfdata(intf, NULL);
1435
1436 usb_kill_urb(wacom->irq);
1437 cancel_work_sync(&wacom->work);
1438 if (wacom->wacom_wac.input)
1439 input_unregister_device(wacom->wacom_wac.input);
1440 wacom_destroy_battery(wacom);
1441 wacom_destroy_leds(wacom);
1442 usb_free_urb(wacom->irq);
1443 usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
1444 wacom->wacom_wac.data, wacom->data_dma);
1445 wacom_remove_shared_data(&wacom->wacom_wac);
1446 kfree(wacom);
1447 }
1448
1449 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
1450 {
1451 struct wacom *wacom = usb_get_intfdata(intf);
1452
1453 mutex_lock(&wacom->lock);
1454 usb_kill_urb(wacom->irq);
1455 mutex_unlock(&wacom->lock);
1456
1457 return 0;
1458 }
1459
1460 static int wacom_resume(struct usb_interface *intf)
1461 {
1462 struct wacom *wacom = usb_get_intfdata(intf);
1463 struct wacom_features *features = &wacom->wacom_wac.features;
1464 int rv = 0;
1465
1466 mutex_lock(&wacom->lock);
1467
1468 /* switch to wacom mode first */
1469 wacom_query_tablet_data(intf, features);
1470 wacom_led_control(wacom);
1471
1472 if ((wacom->open || (features->quirks & WACOM_QUIRK_MONITOR)) &&
1473 usb_submit_urb(wacom->irq, GFP_NOIO) < 0)
1474 rv = -EIO;
1475
1476 mutex_unlock(&wacom->lock);
1477
1478 return rv;
1479 }
1480
1481 static int wacom_reset_resume(struct usb_interface *intf)
1482 {
1483 return wacom_resume(intf);
1484 }
1485
1486 static struct usb_driver wacom_driver = {
1487 .name = "wacom",
1488 .id_table = wacom_ids,
1489 .probe = wacom_probe,
1490 .disconnect = wacom_disconnect,
1491 .suspend = wacom_suspend,
1492 .resume = wacom_resume,
1493 .reset_resume = wacom_reset_resume,
1494 .supports_autosuspend = 1,
1495 };
1496
1497 module_usb_driver(wacom_driver);
(deprecated) Btrfs devel tree