USB: rename usb_buffer_alloc() and usb_buffer_free() users
[linux-2.6.git] / drivers / input / tablet / wacom_sys.c
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_alloc_coherent(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_free_coherent(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_free_coherent(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
677         /* switch to wacom mode first */
678         wacom_query_tablet_data(intf, features);
679
680         if (wacom->open)
681                 rv = usb_submit_urb(wacom->irq, GFP_NOIO);
682         else
683                 rv = 0;
684
685         mutex_unlock(&wacom->lock);
686
687         return rv;
688 }
689
690 static int wacom_reset_resume(struct usb_interface *intf)
691 {
692         return wacom_resume(intf);
693 }
694
695 static struct usb_driver wacom_driver = {
696         .name =         "wacom",
697         .id_table =     wacom_ids,
698         .probe =        wacom_probe,
699         .disconnect =   wacom_disconnect,
700         .suspend =      wacom_suspend,
701         .resume =       wacom_resume,
702         .reset_resume = wacom_reset_resume,
703         .supports_autosuspend = 1,
704 };
705
706 static int __init wacom_init(void)
707 {
708         int result;
709
710         result = usb_register(&wacom_driver);
711         if (result == 0)
712                 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
713                        DRIVER_DESC "\n");
714         return result;
715 }
716
717 static void __exit wacom_exit(void)
718 {
719         usb_deregister(&wacom_driver);
720 }
721
722 module_init(wacom_init);
723 module_exit(wacom_exit);