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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / input / tablet / wacom_sys.c
blob8b5d2873f0c4d4f562b39c3cb929bbba635986ea
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.h"
15 #include "wacom_wac.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 0x30
26 #define HID_USAGE_Y 0x31
27 #define HID_USAGE_X_TILT 0x3d
28 #define HID_USAGE_Y_TILT 0x3e
29 #define HID_USAGE_FINGER 0x22
30 #define HID_USAGE_STYLUS 0x20
31 #define HID_COLLECTION 0xc0
32
33 enum {
34 WCM_UNDEFINED = 0,
35 WCM_DESKTOP,
36 WCM_DIGITIZER,
37 };
38
39 struct hid_descriptor {
40 struct usb_descriptor_header header;
41 __le16 bcdHID;
42 u8 bCountryCode;
43 u8 bNumDescriptors;
44 u8 bDescriptorType;
45 __le16 wDescriptorLength;
46 } __attribute__ ((packed));
47
48 /* defines to get/set USB message */
49 #define USB_REQ_GET_REPORT 0x01
50 #define USB_REQ_SET_REPORT 0x09
51 #define WAC_HID_FEATURE_REPORT 0x03
52
53 static int usb_get_report(struct usb_interface *intf, unsigned char type,
54 unsigned char id, void *buf, int size)
55 {
56 return usb_control_msg(interface_to_usbdev(intf),
57 usb_rcvctrlpipe(interface_to_usbdev(intf), 0),
58 USB_REQ_GET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
59 (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
60 buf, size, 100);
61 }
62
63 static int usb_set_report(struct usb_interface *intf, unsigned char type,
64 unsigned char id, void *buf, int size)
65 {
66 return usb_control_msg(interface_to_usbdev(intf),
67 usb_sndctrlpipe(interface_to_usbdev(intf), 0),
68 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
69 (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
70 buf, size, 1000);
71 }
72
73 static struct input_dev * get_input_dev(struct wacom_combo *wcombo)
74 {
75 return wcombo->wacom->dev;
76 }
77
78 static void wacom_sys_irq(struct urb *urb)
79 {
80 struct wacom *wacom = urb->context;
81 struct wacom_combo wcombo;
82 int retval;
83
84 switch (urb->status) {
85 case 0:
86 /* success */
87 break;
88 case -ECONNRESET:
89 case -ENOENT:
90 case -ESHUTDOWN:
91 /* this urb is terminated, clean up */
92 dbg("%s - urb shutting down with status: %d", __func__, urb->status);
93 return;
94 default:
95 dbg("%s - nonzero urb status received: %d", __func__, urb->status);
96 goto exit;
97 }
98
99 wcombo.wacom = wacom;
100 wcombo.urb = urb;
101
102 if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
103 input_sync(get_input_dev(&wcombo));
104
105 exit:
106 usb_mark_last_busy(wacom->usbdev);
107 retval = usb_submit_urb (urb, GFP_ATOMIC);
108 if (retval)
109 err ("%s - usb_submit_urb failed with result %d",
110 __func__, retval);
111 }
112
113 void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
114 {
115 input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
116 }
117
118 void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
119 {
120 input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
121 }
122
123 void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
124 {
125 input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
126 }
127
128 void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
129 {
130 input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
131 }
132
133 __u16 wacom_be16_to_cpu(unsigned char *data)
134 {
135 __u16 value;
136 value = be16_to_cpu(*(__be16 *) data);
137 return value;
138 }
139
140 __u16 wacom_le16_to_cpu(unsigned char *data)
141 {
142 __u16 value;
143 value = le16_to_cpu(*(__le16 *) data);
144 return value;
145 }
146
147 void wacom_input_sync(void *wcombo)
148 {
149 input_sync(get_input_dev((struct wacom_combo *)wcombo));
150 }
151
152 static int wacom_open(struct input_dev *dev)
153 {
154 struct wacom *wacom = input_get_drvdata(dev);
155
156 mutex_lock(&wacom->lock);
157
158 wacom->irq->dev = wacom->usbdev;
159
160 if (usb_autopm_get_interface(wacom->intf) < 0) {
161 mutex_unlock(&wacom->lock);
162 return -EIO;
163 }
164
165 if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
166 usb_autopm_put_interface(wacom->intf);
167 mutex_unlock(&wacom->lock);
168 return -EIO;
169 }
170
171 wacom->open = 1;
172 wacom->intf->needs_remote_wakeup = 1;
173
174 mutex_unlock(&wacom->lock);
175 return 0;
176 }
177
178 static void wacom_close(struct input_dev *dev)
179 {
180 struct wacom *wacom = input_get_drvdata(dev);
181
182 mutex_lock(&wacom->lock);
183 usb_kill_urb(wacom->irq);
184 wacom->open = 0;
185 wacom->intf->needs_remote_wakeup = 0;
186 mutex_unlock(&wacom->lock);
187 }
188
189 void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
190 {
191 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_1) |
192 BIT_MASK(BTN_5);
193 input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
194 }
195
196 void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
197 {
198 input_dev->evbit[0] |= BIT_MASK(EV_MSC);
199 input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
200 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
201 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) |
202 BIT_MASK(BTN_4);
203 }
204
205 void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
206 {
207 input_dev->evbit[0] |= BIT_MASK(EV_REL);
208 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
209 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_LEFT) |
210 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
211 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
212 BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_STYLUS) |
213 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_STYLUS2);
214 input_set_abs_params(input_dev, ABS_DISTANCE,
215 0, wacom_wac->features.distance_max, 0, 0);
216 }
217
218 void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
219 {
220 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
221 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) |
222 BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
223 input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
224 input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
225 }
226
227 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
228 {
229 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_4) |
230 BIT_MASK(BTN_5) | BIT_MASK(BTN_6) | BIT_MASK(BTN_7);
231 input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
232 }
233
234 void input_dev_i4s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
235 {
236 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
237 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) | BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
238 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_4) | BIT_MASK(BTN_5) | BIT_MASK(BTN_6);
239 input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
240 }
241
242 void input_dev_i4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
243 {
244 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_7) | BIT_MASK(BTN_8);
245 }
246
247 void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
248 {
249 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9);
250 }
251
252 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
253 {
254 input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL);
255 input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
256 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
257 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_LEFT) |
258 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE) |
259 BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
260 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
261 BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_STYLUS) |
262 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_TOOL_BRUSH) |
263 BIT_MASK(BTN_TOOL_PENCIL) | BIT_MASK(BTN_TOOL_AIRBRUSH) |
264 BIT_MASK(BTN_TOOL_LENS) | BIT_MASK(BTN_STYLUS2);
265 input_set_abs_params(input_dev, ABS_DISTANCE,
266 0, wacom_wac->features.distance_max, 0, 0);
267 input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
268 input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
269 input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
270 input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
271 input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
272 }
273
274 void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
275 {
276 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
277 BIT_MASK(BTN_STYLUS) | BIT_MASK(BTN_STYLUS2);
278 }
279
280 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
281 {
282 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER);
283 }
284
285 void input_dev_tpc(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
286 {
287 struct wacom_features *features = &wacom_wac->features;
288
289 if (features->device_type == BTN_TOOL_DOUBLETAP ||
290 features->device_type == BTN_TOOL_TRIPLETAP) {
291 input_set_abs_params(input_dev, ABS_RX, 0, features->x_phy, 0, 0);
292 input_set_abs_params(input_dev, ABS_RY, 0, features->y_phy, 0, 0);
293 __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
294 }
295 }
296
297 void input_dev_tpc2fg(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
298 {
299 if (wacom_wac->features.device_type == BTN_TOOL_TRIPLETAP) {
300 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_TRIPLETAP);
301 input_dev->evbit[0] |= BIT_MASK(EV_MSC);
302 input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
303 }
304 }
305
306 static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hid_desc,
307 struct wacom_features *features)
308 {
309 struct usb_device *dev = interface_to_usbdev(intf);
310 char limit = 0;
311 /* result has to be defined as int for some devices */
312 int result = 0;
313 int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
314 unsigned char *report;
315
316 report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
317 if (!report)
318 return -ENOMEM;
319
320 /* retrive report descriptors */
321 do {
322 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
323 USB_REQ_GET_DESCRIPTOR,
324 USB_RECIP_INTERFACE | USB_DIR_IN,
325 HID_DEVICET_REPORT << 8,
326 intf->altsetting[0].desc.bInterfaceNumber, /* interface */
327 report,
328 hid_desc->wDescriptorLength,
329 5000); /* 5 secs */
330 } while (result < 0 && limit++ < 5);
331
332 /* No need to parse the Descriptor. It isn't an error though */
333 if (result < 0)
334 goto out;
335
336 for (i = 0; i < hid_desc->wDescriptorLength; i++) {
337
338 switch (report[i]) {
339 case HID_USAGE_PAGE:
340 switch (report[i + 1]) {
341 case HID_USAGE_PAGE_DIGITIZER:
342 usage = WCM_DIGITIZER;
343 i++;
344 break;
345
346 case HID_USAGE_PAGE_DESKTOP:
347 usage = WCM_DESKTOP;
348 i++;
349 break;
350 }
351 break;
352
353 case HID_USAGE:
354 switch (report[i + 1]) {
355 case HID_USAGE_X:
356 if (usage == WCM_DESKTOP) {
357 if (finger) {
358 features->device_type = BTN_TOOL_DOUBLETAP;
359 if (features->type == TABLETPC2FG) {
360 /* need to reset back */
361 features->pktlen = WACOM_PKGLEN_TPC2FG;
362 features->device_type = BTN_TOOL_TRIPLETAP;
363 }
364 features->x_max =
365 wacom_le16_to_cpu(&report[i + 3]);
366 features->x_phy =
367 wacom_le16_to_cpu(&report[i + 6]);
368 features->unit = report[i + 9];
369 features->unitExpo = report[i + 11];
370 i += 12;
371 } else if (pen) {
372 /* penabled only accepts exact bytes of data */
373 if (features->type == TABLETPC2FG)
374 features->pktlen = WACOM_PKGLEN_GRAPHIRE;
375 features->device_type = BTN_TOOL_PEN;
376 features->x_max =
377 wacom_le16_to_cpu(&report[i + 3]);
378 i += 4;
379 }
380 } else if (usage == WCM_DIGITIZER) {
381 /* max pressure isn't reported
382 features->pressure_max = (unsigned short)
383 (report[i+4] << 8 | report[i + 3]);
384 */
385 features->pressure_max = 255;
386 i += 4;
387 }
388 break;
389
390 case HID_USAGE_Y:
391 if (usage == WCM_DESKTOP) {
392 if (finger) {
393 features->device_type = BTN_TOOL_DOUBLETAP;
394 if (features->type == TABLETPC2FG) {
395 /* need to reset back */
396 features->pktlen = WACOM_PKGLEN_TPC2FG;
397 features->device_type = BTN_TOOL_TRIPLETAP;
398 features->y_max =
399 wacom_le16_to_cpu(&report[i + 3]);
400 features->y_phy =
401 wacom_le16_to_cpu(&report[i + 6]);
402 i += 7;
403 } else {
404 features->y_max =
405 features->x_max;
406 features->y_phy =
407 wacom_le16_to_cpu(&report[i + 3]);
408 i += 4;
409 }
410 } else if (pen) {
411 /* penabled only accepts exact bytes of data */
412 if (features->type == TABLETPC2FG)
413 features->pktlen = WACOM_PKGLEN_GRAPHIRE;
414 features->device_type = BTN_TOOL_PEN;
415 features->y_max =
416 wacom_le16_to_cpu(&report[i + 3]);
417 i += 4;
418 }
419 }
420 break;
421
422 case HID_USAGE_FINGER:
423 finger = 1;
424 i++;
425 break;
426
427 case HID_USAGE_STYLUS:
428 pen = 1;
429 i++;
430 break;
431
432 case HID_USAGE_UNDEFINED:
433 if (usage == WCM_DESKTOP && finger) /* capacity */
434 features->pressure_max =
435 wacom_le16_to_cpu(&report[i + 3]);
436 i += 4;
437 break;
438 }
439 break;
440
441 case HID_COLLECTION:
442 /* reset UsagePage and Finger */
443 finger = usage = 0;
444 break;
445 }
446 }
447
448 out:
449 result = 0;
450 kfree(report);
451 return result;
452 }
453
454 static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features)
455 {
456 unsigned char *rep_data;
457 int limit = 0, report_id = 2;
458 int error = -ENOMEM;
459
460 rep_data = kmalloc(2, GFP_KERNEL);
461 if (!rep_data)
462 return error;
463
464 /* ask to report tablet data if it is 2FGT or not a Tablet PC */
465 if (features->device_type == BTN_TOOL_TRIPLETAP) {
466 do {
467 rep_data[0] = 3;
468 rep_data[1] = 4;
469 report_id = 3;
470 error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
471 report_id, rep_data, 2);
472 if (error >= 0)
473 error = usb_get_report(intf,
474 WAC_HID_FEATURE_REPORT, report_id,
475 rep_data, 3);
476 } while ((error < 0 || rep_data[1] != 4) && limit++ < 5);
477 } else if (features->type != TABLETPC && features->type != TABLETPC2FG) {
478 do {
479 rep_data[0] = 2;
480 rep_data[1] = 2;
481 error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
482 report_id, rep_data, 2);
483 if (error >= 0)
484 error = usb_get_report(intf,
485 WAC_HID_FEATURE_REPORT, report_id,
486 rep_data, 2);
487 } while ((error < 0 || rep_data[1] != 2) && limit++ < 5);
488 }
489
490 kfree(rep_data);
491
492 return error < 0 ? error : 0;
493 }
494
495 static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
496 struct wacom_features *features)
497 {
498 int error = 0;
499 struct usb_host_interface *interface = intf->cur_altsetting;
500 struct hid_descriptor *hid_desc;
501
502 /* default device to penabled */
503 features->device_type = BTN_TOOL_PEN;
504
505 /* only Tablet PCs need to retrieve the info */
506 if ((features->type != TABLETPC) && (features->type != TABLETPC2FG))
507 goto out;
508
509 if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
510 if (usb_get_extra_descriptor(&interface->endpoint[0],
511 HID_DEVICET_REPORT, &hid_desc)) {
512 printk("wacom: can not retrieve extra class descriptor\n");
513 error = 1;
514 goto out;
515 }
516 }
517 error = wacom_parse_hid(intf, hid_desc, features);
518 if (error)
519 goto out;
520
521 /* touch device found but size is not defined. use default */
522 if (features->device_type == BTN_TOOL_DOUBLETAP && !features->x_max) {
523 features->x_max = 1023;
524 features->y_max = 1023;
525 }
526
527 out:
528 return error;
529 }
530
531 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
532 {
533 struct usb_device *dev = interface_to_usbdev(intf);
534 struct usb_endpoint_descriptor *endpoint;
535 struct wacom *wacom;
536 struct wacom_wac *wacom_wac;
537 struct wacom_features *features;
538 struct input_dev *input_dev;
539 int error;
540
541 if (!id->driver_info)
542 return -EINVAL;
543
544 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
545 wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
546 input_dev = input_allocate_device();
547 if (!wacom || !input_dev || !wacom_wac) {
548 error = -ENOMEM;
549 goto fail1;
550 }
551
552 wacom_wac->features = *((struct wacom_features *)id->driver_info);
553 features = &wacom_wac->features;
554 if (features->pktlen > WACOM_PKGLEN_MAX) {
555 error = -EINVAL;
556 goto fail1;
557 }
558
559 wacom_wac->data = usb_buffer_alloc(dev, WACOM_PKGLEN_MAX,
560 GFP_KERNEL, &wacom->data_dma);
561 if (!wacom_wac->data) {
562 error = -ENOMEM;
563 goto fail1;
564 }
565
566 wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
567 if (!wacom->irq) {
568 error = -ENOMEM;
569 goto fail2;
570 }
571
572 wacom->usbdev = dev;
573 wacom->dev = input_dev;
574 wacom->intf = intf;
575 mutex_init(&wacom->lock);
576 usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
577 strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
578
579 usb_to_input_id(dev, &input_dev->id);
580
581 input_dev->dev.parent = &intf->dev;
582
583 input_set_drvdata(input_dev, wacom);
584
585 input_dev->open = wacom_open;
586 input_dev->close = wacom_close;
587
588 endpoint = &intf->cur_altsetting->endpoint[0].desc;
589
590 /* Retrieve the physical and logical size for OEM devices */
591 error = wacom_retrieve_hid_descriptor(intf, features);
592 if (error)
593 goto fail2;
594
595 strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
596
597 if (features->type == TABLETPC || features->type == TABLETPC2FG) {
598 /* Append the device type to the name */
599 strlcat(wacom_wac->name,
600 features->device_type == BTN_TOOL_PEN ?
601 " Pen" : " Finger",
602 sizeof(wacom_wac->name));
603 }
604
605 input_dev->name = wacom_wac->name;
606 wacom->wacom_wac = wacom_wac;
607
608 input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
609 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOUCH);
610
611 input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0);
612 input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
613 input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
614 input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
615
616 wacom_init_input_dev(input_dev, wacom_wac);
617
618 usb_fill_int_urb(wacom->irq, dev,
619 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
620 wacom_wac->data, features->pktlen,
621 wacom_sys_irq, wacom, endpoint->bInterval);
622 wacom->irq->transfer_dma = wacom->data_dma;
623 wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
624
625 error = input_register_device(wacom->dev);
626 if (error)
627 goto fail3;
628
629 /* Note that if query fails it is not a hard failure */
630 wacom_query_tablet_data(intf, features);
631
632 usb_set_intfdata(intf, wacom);
633 return 0;
634
635 fail3: usb_free_urb(wacom->irq);
636 fail2: usb_buffer_free(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
637 fail1: input_free_device(input_dev);
638 kfree(wacom);
639 kfree(wacom_wac);
640 return error;
641 }
642
643 static void wacom_disconnect(struct usb_interface *intf)
644 {
645 struct wacom *wacom = usb_get_intfdata(intf);
646
647 usb_set_intfdata(intf, NULL);
648
649 usb_kill_urb(wacom->irq);
650 input_unregister_device(wacom->dev);
651 usb_free_urb(wacom->irq);
652 usb_buffer_free(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
653 wacom->wacom_wac->data, wacom->data_dma);
654 kfree(wacom->wacom_wac);
655 kfree(wacom);
656 }
657
658 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
659 {
660 struct wacom *wacom = usb_get_intfdata(intf);
661
662 mutex_lock(&wacom->lock);
663 usb_kill_urb(wacom->irq);
664 mutex_unlock(&wacom->lock);
665
666 return 0;
667 }
668
669 static int wacom_resume(struct usb_interface *intf)
670 {
671 struct wacom *wacom = usb_get_intfdata(intf);
672 struct wacom_features *features = &wacom->wacom_wac->features;
673 int rv;
674
675 mutex_lock(&wacom->lock);
676 if (wacom->open) {
677 rv = usb_submit_urb(wacom->irq, GFP_NOIO);
678 /* switch to wacom mode if needed */
679 if (!wacom_retrieve_hid_descriptor(intf, features))
680 wacom_query_tablet_data(intf, features);
681 } else
682 rv = 0;
683 mutex_unlock(&wacom->lock);
684
685 return rv;
686 }
687
688 static int wacom_reset_resume(struct usb_interface *intf)
689 {
690 return wacom_resume(intf);
691 }
692
693 static struct usb_driver wacom_driver = {
694 .name = "wacom",
695 .id_table = wacom_ids,
696 .probe = wacom_probe,
697 .disconnect = wacom_disconnect,
698 .suspend = wacom_suspend,
699 .resume = wacom_resume,
700 .reset_resume = wacom_reset_resume,
701 .supports_autosuspend = 1,
702 };
703
704 static int __init wacom_init(void)
705 {
706 int result;
707
708 result = usb_register(&wacom_driver);
709 if (result == 0)
710 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
711 DRIVER_DESC "\n");
712 return result;
713 }
714
715 static void __exit wacom_exit(void)
716 {
717 usb_deregister(&wacom_driver);
718 }
719
720 module_init(wacom_init);
721 module_exit(wacom_exit);