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Input: wacom - add support for Intuos4 tablets
[linux-2.6/mini2440.git] / drivers / input / tablet / wacom_sys.c
bloba9d5031b855e5b3c529cbd5e8b8589cf46fcebab
1 /*
2 * drivers/input/tablet/wacom_sys.c
3 *
4 * USB Wacom Graphire and Wacom Intuos 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_MOUSE) | BIT_MASK(BTN_STYLUS2);
213 input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
214 }
215
216 void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
217 {
218 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
219 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) |
220 BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
221 input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
222 input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
223 }
224
225 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
226 {
227 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_4) |
228 BIT_MASK(BTN_5) | BIT_MASK(BTN_6) | BIT_MASK(BTN_7);
229 input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
230 }
231
232 void input_dev_i4s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
233 {
234 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER);
235 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) | BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
236 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_4) | BIT_MASK(BTN_5) | BIT_MASK(BTN_6);
237 input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
238 }
239
240 void input_dev_i4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
241 {
242 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_7) | BIT_MASK(BTN_8);
243 }
244
245 void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
246 {
247 input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9);
248 }
249
250 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
251 {
252 input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL);
253 input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
254 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);
255 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_LEFT) |
256 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE) |
257 BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
258 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) |
259 BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_TOOL_BRUSH) |
260 BIT_MASK(BTN_TOOL_PENCIL) | BIT_MASK(BTN_TOOL_AIRBRUSH) |
261 BIT_MASK(BTN_TOOL_LENS) | BIT_MASK(BTN_STYLUS2);
262 input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
263 input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
264 input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
265 input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
266 input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
267 input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
268 }
269
270 void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
271 {
272 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_STYLUS2);
273 }
274
275 void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
276 {
277 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER);
278 }
279
280 static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hid_desc,
281 struct wacom_wac *wacom_wac)
282 {
283 struct usb_device *dev = interface_to_usbdev(intf);
284 struct wacom_features *features = wacom_wac->features;
285 char limit = 0, result = 0;
286 int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
287 unsigned char *report;
288
289 report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
290 if (!report)
291 return -ENOMEM;
292
293 /* retrive report descriptors */
294 do {
295 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
296 USB_REQ_GET_DESCRIPTOR,
297 USB_RECIP_INTERFACE | USB_DIR_IN,
298 HID_DEVICET_REPORT << 8,
299 intf->altsetting[0].desc.bInterfaceNumber, /* interface */
300 report,
301 hid_desc->wDescriptorLength,
302 5000); /* 5 secs */
303 } while (result < 0 && limit++ < 5);
304
305 /* No need to parse the Descriptor. It isn't an error though */
306 if (result < 0)
307 goto out;
308
309 for (i = 0; i < hid_desc->wDescriptorLength; i++) {
310
311 switch (report[i]) {
312 case HID_USAGE_PAGE:
313 switch (report[i + 1]) {
314 case HID_USAGE_PAGE_DIGITIZER:
315 usage = WCM_DIGITIZER;
316 i++;
317 break;
318
319 case HID_USAGE_PAGE_DESKTOP:
320 usage = WCM_DESKTOP;
321 i++;
322 break;
323 }
324 break;
325
326 case HID_USAGE:
327 switch (report[i + 1]) {
328 case HID_USAGE_X:
329 if (usage == WCM_DESKTOP) {
330 if (finger) {
331 features->touch_x_max =
332 features->touch_y_max =
333 wacom_le16_to_cpu(&report[i + 3]);
334 features->x_max =
335 wacom_le16_to_cpu(&report[i + 6]);
336 i += 7;
337 } else if (pen) {
338 features->x_max =
339 wacom_le16_to_cpu(&report[i + 3]);
340 i += 4;
341 }
342 } else if (usage == WCM_DIGITIZER) {
343 /* max pressure isn't reported
344 features->pressure_max = (unsigned short)
345 (report[i+4] << 8 | report[i + 3]);
346 */
347 features->pressure_max = 255;
348 i += 4;
349 }
350 break;
351
352 case HID_USAGE_Y:
353 if (usage == WCM_DESKTOP)
354 features->y_max =
355 wacom_le16_to_cpu(&report[i + 3]);
356 i += 4;
357 break;
358
359 case HID_USAGE_FINGER:
360 finger = 1;
361 i++;
362 break;
363
364 case HID_USAGE_STYLUS:
365 pen = 1;
366 i++;
367 break;
368
369 case HID_USAGE_UNDEFINED:
370 if (usage == WCM_DESKTOP && finger) /* capacity */
371 features->pressure_max =
372 wacom_le16_to_cpu(&report[i + 3]);
373 i += 4;
374 break;
375 }
376 break;
377
378 case HID_COLLECTION:
379 /* reset UsagePage ans Finger */
380 finger = usage = 0;
381 break;
382 }
383 }
384
385 out:
386 result = 0;
387 kfree(report);
388 return result;
389 }
390
391 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
392 {
393 struct usb_device *dev = interface_to_usbdev(intf);
394 struct usb_host_interface *interface = intf->cur_altsetting;
395 struct usb_endpoint_descriptor *endpoint;
396 struct wacom *wacom;
397 struct wacom_wac *wacom_wac;
398 struct wacom_features *features;
399 struct input_dev *input_dev;
400 int error = -ENOMEM;
401 char rep_data[2], limit = 0;
402 struct hid_descriptor *hid_desc;
403
404 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
405 wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
406 input_dev = input_allocate_device();
407 if (!wacom || !input_dev || !wacom_wac)
408 goto fail1;
409
410 wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
411 if (!wacom_wac->data)
412 goto fail1;
413
414 wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
415 if (!wacom->irq)
416 goto fail2;
417
418 wacom->usbdev = dev;
419 wacom->dev = input_dev;
420 wacom->intf = intf;
421 mutex_init(&wacom->lock);
422 usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
423 strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
424
425 wacom_wac->features = features = get_wacom_feature(id);
426 BUG_ON(features->pktlen > 10);
427
428 input_dev->name = wacom_wac->features->name;
429 wacom->wacom_wac = wacom_wac;
430 usb_to_input_id(dev, &input_dev->id);
431
432 input_dev->dev.parent = &intf->dev;
433
434 input_set_drvdata(input_dev, wacom);
435
436 input_dev->open = wacom_open;
437 input_dev->close = wacom_close;
438
439 endpoint = &intf->cur_altsetting->endpoint[0].desc;
440
441 /* Initialize touch_x_max and touch_y_max in case it is not defined */
442 if (wacom_wac->features->type == TABLETPC) {
443 features->touch_x_max = 1023;
444 features->touch_y_max = 1023;
445 } else {
446 features->touch_x_max = 0;
447 features->touch_y_max = 0;
448 }
449
450 /* TabletPC need to retrieve the physical and logical maximum from report descriptor */
451 if (wacom_wac->features->type == TABLETPC) {
452 if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
453 if (usb_get_extra_descriptor(&interface->endpoint[0],
454 HID_DEVICET_REPORT, &hid_desc)) {
455 printk("wacom: can not retrive extra class descriptor\n");
456 goto fail2;
457 }
458 }
459 error = wacom_parse_hid(intf, hid_desc, wacom_wac);
460 if (error)
461 goto fail2;
462 }
463
464 input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
465 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
466 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS);
467 input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0);
468 input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
469 input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
470 if (features->type == TABLETPC) {
471 input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_DOUBLETAP);
472 input_set_abs_params(input_dev, ABS_RX, 0, features->touch_x_max, 4, 0);
473 input_set_abs_params(input_dev, ABS_RY, 0, features->touch_y_max, 4, 0);
474 }
475 input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
476
477 wacom_init_input_dev(input_dev, wacom_wac);
478
479 usb_fill_int_urb(wacom->irq, dev,
480 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
481 wacom_wac->data, wacom_wac->features->pktlen,
482 wacom_sys_irq, wacom, endpoint->bInterval);
483 wacom->irq->transfer_dma = wacom->data_dma;
484 wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
485
486 error = input_register_device(wacom->dev);
487 if (error)
488 goto fail3;
489
490 /*
491 * Ask the tablet to report tablet data if it is not a Tablet PC.
492 * Repeat until it succeeds
493 */
494 if (wacom_wac->features->type != TABLETPC) {
495 do {
496 rep_data[0] = 2;
497 rep_data[1] = 2;
498 error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
499 2, rep_data, 2);
500 if (error >= 0)
501 error = usb_get_report(intf,
502 WAC_HID_FEATURE_REPORT, 2,
503 rep_data, 2);
504 } while ((error < 0 || rep_data[1] != 2) && limit++ < 5);
505 }
506
507 usb_set_intfdata(intf, wacom);
508 return 0;
509
510 fail3: usb_free_urb(wacom->irq);
511 fail2: usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
512 fail1: input_free_device(input_dev);
513 kfree(wacom);
514 kfree(wacom_wac);
515 return error;
516 }
517
518 static void wacom_disconnect(struct usb_interface *intf)
519 {
520 struct wacom *wacom = usb_get_intfdata(intf);
521
522 usb_set_intfdata(intf, NULL);
523
524 usb_kill_urb(wacom->irq);
525 input_unregister_device(wacom->dev);
526 usb_free_urb(wacom->irq);
527 usb_buffer_free(interface_to_usbdev(intf), 10,
528 wacom->wacom_wac->data, wacom->data_dma);
529 kfree(wacom->wacom_wac);
530 kfree(wacom);
531 }
532
533 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
534 {
535 struct wacom *wacom = usb_get_intfdata(intf);
536
537 mutex_lock(&wacom->lock);
538 usb_kill_urb(wacom->irq);
539 mutex_unlock(&wacom->lock);
540
541 return 0;
542 }
543
544 static int wacom_resume(struct usb_interface *intf)
545 {
546 struct wacom *wacom = usb_get_intfdata(intf);
547 int rv;
548
549 mutex_lock(&wacom->lock);
550 if (wacom->open)
551 rv = usb_submit_urb(wacom->irq, GFP_NOIO);
552 else
553 rv = 0;
554 mutex_unlock(&wacom->lock);
555
556 return rv;
557 }
558
559 static int wacom_reset_resume(struct usb_interface *intf)
560 {
561 return wacom_resume(intf);
562 }
563
564 static struct usb_driver wacom_driver = {
565 .name = "wacom",
566 .probe = wacom_probe,
567 .disconnect = wacom_disconnect,
568 .suspend = wacom_suspend,
569 .resume = wacom_resume,
570 .reset_resume = wacom_reset_resume,
571 .supports_autosuspend = 1,
572 };
573
574 static int __init wacom_init(void)
575 {
576 int result;
577 wacom_driver.id_table = get_device_table();
578 result = usb_register(&wacom_driver);
579 if (result == 0)
580 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
581 DRIVER_DESC "\n");
582 return result;
583 }
584
585 static void __exit wacom_exit(void)
586 {
587 usb_deregister(&wacom_driver);
588 }
589
590 module_init(wacom_init);
591 module_exit(wacom_exit);
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