Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[muen/linux.git] / drivers / hid / wacom_wac.c
1 /*
2  * drivers/input/tablet/wacom_wac.c
3  *
4  *  USB Wacom tablet support - Wacom specific code
5  *
6  */
7
8 /*
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  */
14
15 #include "wacom_wac.h"
16 #include "wacom.h"
17 #include <linux/input/mt.h>
18
19 /* resolution for penabled devices */
20 #define WACOM_PL_RES            20
21 #define WACOM_PENPRTN_RES       40
22 #define WACOM_VOLITO_RES        50
23 #define WACOM_GRAPHIRE_RES      80
24 #define WACOM_INTUOS_RES        100
25 #define WACOM_INTUOS3_RES       200
26
27 /* Newer Cintiq and DTU have an offset between tablet and screen areas */
28 #define WACOM_DTU_OFFSET        200
29 #define WACOM_CINTIQ_OFFSET     400
30
31 /*
32  * Scale factor relating reported contact size to logical contact area.
33  * 2^14/pi is a good approximation on Intuos5 and 3rd-gen Bamboo
34  */
35 #define WACOM_CONTACT_AREA_SCALE 2607
36
37 static bool touch_arbitration = 1;
38 module_param(touch_arbitration, bool, 0644);
39 MODULE_PARM_DESC(touch_arbitration, " on (Y) off (N)");
40
41 static void wacom_report_numbered_buttons(struct input_dev *input_dev,
42                                 int button_count, int mask);
43
44 static int wacom_numbered_button_to_key(int n);
45
46 static void wacom_update_led(struct wacom *wacom, int button_count, int mask,
47                              int group);
48 /*
49  * Percent of battery capacity for Graphire.
50  * 8th value means AC online and show 100% capacity.
51  */
52 static unsigned short batcap_gr[8] = { 1, 15, 25, 35, 50, 70, 100, 100 };
53
54 /*
55  * Percent of battery capacity for Intuos4 WL, AC has a separate bit.
56  */
57 static unsigned short batcap_i4[8] = { 1, 15, 30, 45, 60, 70, 85, 100 };
58
59 static void __wacom_notify_battery(struct wacom_battery *battery,
60                                    int bat_status, int bat_capacity,
61                                    bool bat_charging, bool bat_connected,
62                                    bool ps_connected)
63 {
64         bool changed = battery->bat_status       != bat_status    ||
65                        battery->battery_capacity != bat_capacity  ||
66                        battery->bat_charging     != bat_charging  ||
67                        battery->bat_connected    != bat_connected ||
68                        battery->ps_connected     != ps_connected;
69
70         if (changed) {
71                 battery->bat_status = bat_status;
72                 battery->battery_capacity = bat_capacity;
73                 battery->bat_charging = bat_charging;
74                 battery->bat_connected = bat_connected;
75                 battery->ps_connected = ps_connected;
76
77                 if (battery->battery)
78                         power_supply_changed(battery->battery);
79         }
80 }
81
82 static void wacom_notify_battery(struct wacom_wac *wacom_wac,
83         int bat_status, int bat_capacity, bool bat_charging,
84         bool bat_connected, bool ps_connected)
85 {
86         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
87
88         __wacom_notify_battery(&wacom->battery, bat_status, bat_capacity,
89                                bat_charging, bat_connected, ps_connected);
90 }
91
92 static int wacom_penpartner_irq(struct wacom_wac *wacom)
93 {
94         unsigned char *data = wacom->data;
95         struct input_dev *input = wacom->pen_input;
96
97         switch (data[0]) {
98         case 1:
99                 if (data[5] & 0x80) {
100                         wacom->tool[0] = (data[5] & 0x20) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
101                         wacom->id[0] = (data[5] & 0x20) ? ERASER_DEVICE_ID : STYLUS_DEVICE_ID;
102                         input_report_key(input, wacom->tool[0], 1);
103                         input_report_abs(input, ABS_MISC, wacom->id[0]); /* report tool id */
104                         input_report_abs(input, ABS_X, get_unaligned_le16(&data[1]));
105                         input_report_abs(input, ABS_Y, get_unaligned_le16(&data[3]));
106                         input_report_abs(input, ABS_PRESSURE, (signed char)data[6] + 127);
107                         input_report_key(input, BTN_TOUCH, ((signed char)data[6] > -127));
108                         input_report_key(input, BTN_STYLUS, (data[5] & 0x40));
109                 } else {
110                         input_report_key(input, wacom->tool[0], 0);
111                         input_report_abs(input, ABS_MISC, 0); /* report tool id */
112                         input_report_abs(input, ABS_PRESSURE, -1);
113                         input_report_key(input, BTN_TOUCH, 0);
114                 }
115                 break;
116
117         case 2:
118                 input_report_key(input, BTN_TOOL_PEN, 1);
119                 input_report_abs(input, ABS_MISC, STYLUS_DEVICE_ID); /* report tool id */
120                 input_report_abs(input, ABS_X, get_unaligned_le16(&data[1]));
121                 input_report_abs(input, ABS_Y, get_unaligned_le16(&data[3]));
122                 input_report_abs(input, ABS_PRESSURE, (signed char)data[6] + 127);
123                 input_report_key(input, BTN_TOUCH, ((signed char)data[6] > -80) && !(data[5] & 0x20));
124                 input_report_key(input, BTN_STYLUS, (data[5] & 0x40));
125                 break;
126
127         default:
128                 dev_dbg(input->dev.parent,
129                         "%s: received unknown report #%d\n", __func__, data[0]);
130                 return 0;
131         }
132
133         return 1;
134 }
135
136 static int wacom_pl_irq(struct wacom_wac *wacom)
137 {
138         struct wacom_features *features = &wacom->features;
139         unsigned char *data = wacom->data;
140         struct input_dev *input = wacom->pen_input;
141         int prox, pressure;
142
143         if (data[0] != WACOM_REPORT_PENABLED) {
144                 dev_dbg(input->dev.parent,
145                         "%s: received unknown report #%d\n", __func__, data[0]);
146                 return 0;
147         }
148
149         prox = data[1] & 0x40;
150
151         if (!wacom->id[0]) {
152                 if ((data[0] & 0x10) || (data[4] & 0x20)) {
153                         wacom->tool[0] = BTN_TOOL_RUBBER;
154                         wacom->id[0] = ERASER_DEVICE_ID;
155                 }
156                 else {
157                         wacom->tool[0] = BTN_TOOL_PEN;
158                         wacom->id[0] = STYLUS_DEVICE_ID;
159                 }
160         }
161
162         /* If the eraser is in prox, STYLUS2 is always set. If we
163          * mis-detected the type and notice that STYLUS2 isn't set
164          * then force the eraser out of prox and let the pen in.
165          */
166         if (wacom->tool[0] == BTN_TOOL_RUBBER && !(data[4] & 0x20)) {
167                 input_report_key(input, BTN_TOOL_RUBBER, 0);
168                 input_report_abs(input, ABS_MISC, 0);
169                 input_sync(input);
170                 wacom->tool[0] = BTN_TOOL_PEN;
171                 wacom->id[0] = STYLUS_DEVICE_ID;
172         }
173
174         if (prox) {
175                 pressure = (signed char)((data[7] << 1) | ((data[4] >> 2) & 1));
176                 if (features->pressure_max > 255)
177                         pressure = (pressure << 1) | ((data[4] >> 6) & 1);
178                 pressure += (features->pressure_max + 1) / 2;
179
180                 input_report_abs(input, ABS_X, data[3] | (data[2] << 7) | ((data[1] & 0x03) << 14));
181                 input_report_abs(input, ABS_Y, data[6] | (data[5] << 7) | ((data[4] & 0x03) << 14));
182                 input_report_abs(input, ABS_PRESSURE, pressure);
183
184                 input_report_key(input, BTN_TOUCH, data[4] & 0x08);
185                 input_report_key(input, BTN_STYLUS, data[4] & 0x10);
186                 /* Only allow the stylus2 button to be reported for the pen tool. */
187                 input_report_key(input, BTN_STYLUS2, (wacom->tool[0] == BTN_TOOL_PEN) && (data[4] & 0x20));
188         }
189
190         if (!prox)
191                 wacom->id[0] = 0;
192         input_report_key(input, wacom->tool[0], prox);
193         input_report_abs(input, ABS_MISC, wacom->id[0]);
194         return 1;
195 }
196
197 static int wacom_ptu_irq(struct wacom_wac *wacom)
198 {
199         unsigned char *data = wacom->data;
200         struct input_dev *input = wacom->pen_input;
201
202         if (data[0] != WACOM_REPORT_PENABLED) {
203                 dev_dbg(input->dev.parent,
204                         "%s: received unknown report #%d\n", __func__, data[0]);
205                 return 0;
206         }
207
208         if (data[1] & 0x04) {
209                 input_report_key(input, BTN_TOOL_RUBBER, data[1] & 0x20);
210                 input_report_key(input, BTN_TOUCH, data[1] & 0x08);
211                 wacom->id[0] = ERASER_DEVICE_ID;
212         } else {
213                 input_report_key(input, BTN_TOOL_PEN, data[1] & 0x20);
214                 input_report_key(input, BTN_TOUCH, data[1] & 0x01);
215                 wacom->id[0] = STYLUS_DEVICE_ID;
216         }
217         input_report_abs(input, ABS_MISC, wacom->id[0]); /* report tool id */
218         input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
219         input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
220         input_report_abs(input, ABS_PRESSURE, le16_to_cpup((__le16 *)&data[6]));
221         input_report_key(input, BTN_STYLUS, data[1] & 0x02);
222         input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
223         return 1;
224 }
225
226 static int wacom_dtu_irq(struct wacom_wac *wacom)
227 {
228         unsigned char *data = wacom->data;
229         struct input_dev *input = wacom->pen_input;
230         int prox = data[1] & 0x20;
231
232         dev_dbg(input->dev.parent,
233                 "%s: received report #%d", __func__, data[0]);
234
235         if (prox) {
236                 /* Going into proximity select tool */
237                 wacom->tool[0] = (data[1] & 0x0c) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
238                 if (wacom->tool[0] == BTN_TOOL_PEN)
239                         wacom->id[0] = STYLUS_DEVICE_ID;
240                 else
241                         wacom->id[0] = ERASER_DEVICE_ID;
242         }
243         input_report_key(input, BTN_STYLUS, data[1] & 0x02);
244         input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
245         input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
246         input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
247         input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]);
248         input_report_key(input, BTN_TOUCH, data[1] & 0x05);
249         if (!prox) /* out-prox */
250                 wacom->id[0] = 0;
251         input_report_key(input, wacom->tool[0], prox);
252         input_report_abs(input, ABS_MISC, wacom->id[0]);
253         return 1;
254 }
255
256 static int wacom_dtus_irq(struct wacom_wac *wacom)
257 {
258         char *data = wacom->data;
259         struct input_dev *input = wacom->pen_input;
260         unsigned short prox, pressure = 0;
261
262         if (data[0] != WACOM_REPORT_DTUS && data[0] != WACOM_REPORT_DTUSPAD) {
263                 dev_dbg(input->dev.parent,
264                         "%s: received unknown report #%d", __func__, data[0]);
265                 return 0;
266         } else if (data[0] == WACOM_REPORT_DTUSPAD) {
267                 input = wacom->pad_input;
268                 input_report_key(input, BTN_0, (data[1] & 0x01));
269                 input_report_key(input, BTN_1, (data[1] & 0x02));
270                 input_report_key(input, BTN_2, (data[1] & 0x04));
271                 input_report_key(input, BTN_3, (data[1] & 0x08));
272                 input_report_abs(input, ABS_MISC,
273                                  data[1] & 0x0f ? PAD_DEVICE_ID : 0);
274                 return 1;
275         } else {
276                 prox = data[1] & 0x80;
277                 if (prox) {
278                         switch ((data[1] >> 3) & 3) {
279                         case 1: /* Rubber */
280                                 wacom->tool[0] = BTN_TOOL_RUBBER;
281                                 wacom->id[0] = ERASER_DEVICE_ID;
282                                 break;
283
284                         case 2: /* Pen */
285                                 wacom->tool[0] = BTN_TOOL_PEN;
286                                 wacom->id[0] = STYLUS_DEVICE_ID;
287                                 break;
288                         }
289                 }
290
291                 input_report_key(input, BTN_STYLUS, data[1] & 0x20);
292                 input_report_key(input, BTN_STYLUS2, data[1] & 0x40);
293                 input_report_abs(input, ABS_X, get_unaligned_be16(&data[3]));
294                 input_report_abs(input, ABS_Y, get_unaligned_be16(&data[5]));
295                 pressure = ((data[1] & 0x03) << 8) | (data[2] & 0xff);
296                 input_report_abs(input, ABS_PRESSURE, pressure);
297                 input_report_key(input, BTN_TOUCH, pressure > 10);
298
299                 if (!prox) /* out-prox */
300                         wacom->id[0] = 0;
301                 input_report_key(input, wacom->tool[0], prox);
302                 input_report_abs(input, ABS_MISC, wacom->id[0]);
303                 return 1;
304         }
305 }
306
307 static int wacom_graphire_irq(struct wacom_wac *wacom)
308 {
309         struct wacom_features *features = &wacom->features;
310         unsigned char *data = wacom->data;
311         struct input_dev *input = wacom->pen_input;
312         struct input_dev *pad_input = wacom->pad_input;
313         int battery_capacity, ps_connected;
314         int prox;
315         int rw = 0;
316         int retval = 0;
317
318         if (features->type == GRAPHIRE_BT) {
319                 if (data[0] != WACOM_REPORT_PENABLED_BT) {
320                         dev_dbg(input->dev.parent,
321                                 "%s: received unknown report #%d\n", __func__,
322                                 data[0]);
323                         goto exit;
324                 }
325         } else if (data[0] != WACOM_REPORT_PENABLED) {
326                 dev_dbg(input->dev.parent,
327                         "%s: received unknown report #%d\n", __func__, data[0]);
328                 goto exit;
329         }
330
331         prox = data[1] & 0x80;
332         if (prox || wacom->id[0]) {
333                 if (prox) {
334                         switch ((data[1] >> 5) & 3) {
335
336                         case 0: /* Pen */
337                                 wacom->tool[0] = BTN_TOOL_PEN;
338                                 wacom->id[0] = STYLUS_DEVICE_ID;
339                                 break;
340
341                         case 1: /* Rubber */
342                                 wacom->tool[0] = BTN_TOOL_RUBBER;
343                                 wacom->id[0] = ERASER_DEVICE_ID;
344                                 break;
345
346                         case 2: /* Mouse with wheel */
347                                 input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
348                                 /* fall through */
349
350                         case 3: /* Mouse without wheel */
351                                 wacom->tool[0] = BTN_TOOL_MOUSE;
352                                 wacom->id[0] = CURSOR_DEVICE_ID;
353                                 break;
354                         }
355                 }
356                 input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
357                 input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
358                 if (wacom->tool[0] != BTN_TOOL_MOUSE) {
359                         if (features->type == GRAPHIRE_BT)
360                                 input_report_abs(input, ABS_PRESSURE, data[6] |
361                                         (((__u16) (data[1] & 0x08)) << 5));
362                         else
363                                 input_report_abs(input, ABS_PRESSURE, data[6] |
364                                         ((data[7] & 0x03) << 8));
365                         input_report_key(input, BTN_TOUCH, data[1] & 0x01);
366                         input_report_key(input, BTN_STYLUS, data[1] & 0x02);
367                         input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
368                 } else {
369                         input_report_key(input, BTN_LEFT, data[1] & 0x01);
370                         input_report_key(input, BTN_RIGHT, data[1] & 0x02);
371                         if (features->type == WACOM_G4 ||
372                                         features->type == WACOM_MO) {
373                                 input_report_abs(input, ABS_DISTANCE, data[6] & 0x3f);
374                                 rw = (data[7] & 0x04) - (data[7] & 0x03);
375                         } else if (features->type == GRAPHIRE_BT) {
376                                 /* Compute distance between mouse and tablet */
377                                 rw = 44 - (data[6] >> 2);
378                                 rw = clamp_val(rw, 0, 31);
379                                 input_report_abs(input, ABS_DISTANCE, rw);
380                                 if (((data[1] >> 5) & 3) == 2) {
381                                         /* Mouse with wheel */
382                                         input_report_key(input, BTN_MIDDLE,
383                                                         data[1] & 0x04);
384                                         rw = (data[6] & 0x01) ? -1 :
385                                                 (data[6] & 0x02) ? 1 : 0;
386                                 } else {
387                                         rw = 0;
388                                 }
389                         } else {
390                                 input_report_abs(input, ABS_DISTANCE, data[7] & 0x3f);
391                                 rw = -(signed char)data[6];
392                         }
393                         input_report_rel(input, REL_WHEEL, rw);
394                 }
395
396                 if (!prox)
397                         wacom->id[0] = 0;
398                 input_report_abs(input, ABS_MISC, wacom->id[0]); /* report tool id */
399                 input_report_key(input, wacom->tool[0], prox);
400                 input_sync(input); /* sync last event */
401         }
402
403         /* send pad data */
404         switch (features->type) {
405         case WACOM_G4:
406                 prox = data[7] & 0xf8;
407                 if (prox || wacom->id[1]) {
408                         wacom->id[1] = PAD_DEVICE_ID;
409                         input_report_key(pad_input, BTN_BACK, (data[7] & 0x40));
410                         input_report_key(pad_input, BTN_FORWARD, (data[7] & 0x80));
411                         rw = ((data[7] & 0x18) >> 3) - ((data[7] & 0x20) >> 3);
412                         input_report_rel(pad_input, REL_WHEEL, rw);
413                         if (!prox)
414                                 wacom->id[1] = 0;
415                         input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
416                         retval = 1;
417                 }
418                 break;
419
420         case WACOM_MO:
421                 prox = (data[7] & 0xf8) || data[8];
422                 if (prox || wacom->id[1]) {
423                         wacom->id[1] = PAD_DEVICE_ID;
424                         input_report_key(pad_input, BTN_BACK, (data[7] & 0x08));
425                         input_report_key(pad_input, BTN_LEFT, (data[7] & 0x20));
426                         input_report_key(pad_input, BTN_FORWARD, (data[7] & 0x10));
427                         input_report_key(pad_input, BTN_RIGHT, (data[7] & 0x40));
428                         input_report_abs(pad_input, ABS_WHEEL, (data[8] & 0x7f));
429                         if (!prox)
430                                 wacom->id[1] = 0;
431                         input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
432                         retval = 1;
433                 }
434                 break;
435         case GRAPHIRE_BT:
436                 prox = data[7] & 0x03;
437                 if (prox || wacom->id[1]) {
438                         wacom->id[1] = PAD_DEVICE_ID;
439                         input_report_key(pad_input, BTN_0, (data[7] & 0x02));
440                         input_report_key(pad_input, BTN_1, (data[7] & 0x01));
441                         if (!prox)
442                                 wacom->id[1] = 0;
443                         input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
444                         retval = 1;
445                 }
446                 break;
447         }
448
449         /* Store current battery capacity and power supply state */
450         if (features->type == GRAPHIRE_BT) {
451                 rw = (data[7] >> 2 & 0x07);
452                 battery_capacity = batcap_gr[rw];
453                 ps_connected = rw == 7;
454                 wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
455                                      battery_capacity, ps_connected, 1,
456                                      ps_connected);
457         }
458 exit:
459         return retval;
460 }
461
462 static void wacom_intuos_schedule_prox_event(struct wacom_wac *wacom_wac)
463 {
464         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
465         struct wacom_features *features = &wacom_wac->features;
466         struct hid_report *r;
467         struct hid_report_enum *re;
468
469         re = &(wacom->hdev->report_enum[HID_FEATURE_REPORT]);
470         if (features->type == INTUOSHT2)
471                 r = re->report_id_hash[WACOM_REPORT_INTUOSHT2_ID];
472         else
473                 r = re->report_id_hash[WACOM_REPORT_INTUOS_ID1];
474         if (r) {
475                 hid_hw_request(wacom->hdev, r, HID_REQ_GET_REPORT);
476         }
477 }
478
479 static int wacom_intuos_pad(struct wacom_wac *wacom)
480 {
481         struct wacom_features *features = &wacom->features;
482         unsigned char *data = wacom->data;
483         struct input_dev *input = wacom->pad_input;
484         int i;
485         int buttons = 0, nbuttons = features->numbered_buttons;
486         int keys = 0, nkeys = 0;
487         int ring1 = 0, ring2 = 0;
488         int strip1 = 0, strip2 = 0;
489         bool prox = false;
490
491         /* pad packets. Works as a second tool and is always in prox */
492         if (!(data[0] == WACOM_REPORT_INTUOSPAD || data[0] == WACOM_REPORT_INTUOS5PAD ||
493               data[0] == WACOM_REPORT_CINTIQPAD))
494                 return 0;
495
496         if (features->type >= INTUOS4S && features->type <= INTUOS4L) {
497                 buttons = (data[3] << 1) | (data[2] & 0x01);
498                 ring1 = data[1];
499         } else if (features->type == DTK) {
500                 buttons = data[6];
501         } else if (features->type == WACOM_13HD) {
502                 buttons = (data[4] << 1) | (data[3] & 0x01);
503         } else if (features->type == WACOM_24HD) {
504                 buttons = (data[8] << 8) | data[6];
505                 ring1 = data[1];
506                 ring2 = data[2];
507
508                 /*
509                  * Three "buttons" are available on the 24HD which are
510                  * physically implemented as a touchstrip. Each button
511                  * is approximately 3 bits wide with a 2 bit spacing.
512                  * The raw touchstrip bits are stored at:
513                  *    ((data[3] & 0x1f) << 8) | data[4])
514                  */
515                 nkeys = 3;
516                 keys = ((data[3] & 0x1C) ? 1<<2 : 0) |
517                        ((data[4] & 0xE0) ? 1<<1 : 0) |
518                        ((data[4] & 0x07) ? 1<<0 : 0);
519         } else if (features->type == WACOM_27QHD) {
520                 nkeys = 3;
521                 keys = data[2] & 0x07;
522
523                 input_report_abs(input, ABS_X, be16_to_cpup((__be16 *)&data[4]));
524                 input_report_abs(input, ABS_Y, be16_to_cpup((__be16 *)&data[6]));
525                 input_report_abs(input, ABS_Z, be16_to_cpup((__be16 *)&data[8]));
526         } else if (features->type == CINTIQ_HYBRID) {
527                 /*
528                  * Do not send hardware buttons under Android. They
529                  * are already sent to the system through GPIO (and
530                  * have different meaning).
531                  *
532                  * d-pad right  -> data[4] & 0x10
533                  * d-pad up     -> data[4] & 0x20
534                  * d-pad left   -> data[4] & 0x40
535                  * d-pad down   -> data[4] & 0x80
536                  * d-pad center -> data[3] & 0x01
537                  */
538                 buttons = (data[4] << 1) | (data[3] & 0x01);
539         } else if (features->type == CINTIQ_COMPANION_2) {
540                 /* d-pad right  -> data[4] & 0x10
541                  * d-pad up     -> data[4] & 0x20
542                  * d-pad left   -> data[4] & 0x40
543                  * d-pad down   -> data[4] & 0x80
544                  * d-pad center -> data[3] & 0x01
545                  */
546                 buttons = ((data[2] >> 4) << 7) |
547                           ((data[1] & 0x04) << 6) |
548                           ((data[2] & 0x0F) << 2) |
549                           (data[1] & 0x03);
550         } else if (features->type >= INTUOS5S && features->type <= INTUOSPL) {
551                 /*
552                  * ExpressKeys on Intuos5/Intuos Pro have a capacitive sensor in
553                  * addition to the mechanical switch. Switch data is
554                  * stored in data[4], capacitive data in data[5].
555                  *
556                  * Touch ring mode switch (data[3]) has no capacitive sensor
557                  */
558                 buttons = (data[4] << 1) | (data[3] & 0x01);
559                 ring1 = data[2];
560         } else {
561                 if (features->type == WACOM_21UX2 || features->type == WACOM_22HD) {
562                         buttons = (data[8] << 10) | ((data[7] & 0x01) << 9) |
563                                   (data[6] << 1) | (data[5] & 0x01);
564
565                         if (features->type == WACOM_22HD) {
566                                 nkeys = 3;
567                                 keys = data[9] & 0x07;
568                         }
569                 } else {
570                         buttons = ((data[6] & 0x10) << 5)  |
571                                   ((data[5] & 0x10) << 4)  |
572                                   ((data[6] & 0x0F) << 4)  |
573                                   (data[5] & 0x0F);
574                 }
575                 strip1 = ((data[1] & 0x1f) << 8) | data[2];
576                 strip2 = ((data[3] & 0x1f) << 8) | data[4];
577         }
578
579         prox = (buttons & ~(~0 << nbuttons)) | (keys & ~(~0 << nkeys)) |
580                (ring1 & 0x80) | (ring2 & 0x80) | strip1 | strip2;
581
582         wacom_report_numbered_buttons(input, nbuttons, buttons);
583
584         for (i = 0; i < nkeys; i++)
585                 input_report_key(input, KEY_PROG1 + i, keys & (1 << i));
586
587         input_report_abs(input, ABS_RX, strip1);
588         input_report_abs(input, ABS_RY, strip2);
589
590         input_report_abs(input, ABS_WHEEL,    (ring1 & 0x80) ? (ring1 & 0x7f) : 0);
591         input_report_abs(input, ABS_THROTTLE, (ring2 & 0x80) ? (ring2 & 0x7f) : 0);
592
593         input_report_key(input, wacom->tool[1], prox ? 1 : 0);
594         input_report_abs(input, ABS_MISC, prox ? PAD_DEVICE_ID : 0);
595
596         input_event(input, EV_MSC, MSC_SERIAL, 0xffffffff);
597
598         return 1;
599 }
600
601 static int wacom_intuos_id_mangle(int tool_id)
602 {
603         return (tool_id & ~0xFFF) << 4 | (tool_id & 0xFFF);
604 }
605
606 static int wacom_intuos_get_tool_type(int tool_id)
607 {
608         int tool_type;
609
610         switch (tool_id) {
611         case 0x812: /* Inking pen */
612         case 0x801: /* Intuos3 Inking pen */
613         case 0x12802: /* Intuos4/5 Inking Pen */
614         case 0x012:
615                 tool_type = BTN_TOOL_PENCIL;
616                 break;
617
618         case 0x822: /* Pen */
619         case 0x842:
620         case 0x852:
621         case 0x823: /* Intuos3 Grip Pen */
622         case 0x813: /* Intuos3 Classic Pen */
623         case 0x885: /* Intuos3 Marker Pen */
624         case 0x802: /* Intuos4/5 13HD/24HD General Pen */
625         case 0x804: /* Intuos4/5 13HD/24HD Marker Pen */
626         case 0x8e2: /* IntuosHT2 pen */
627         case 0x022:
628         case 0x10804: /* Intuos4/5 13HD/24HD Art Pen */
629         case 0x14802: /* Intuos4/5 13HD/24HD Classic Pen */
630         case 0x16802: /* Cintiq 13HD Pro Pen */
631         case 0x18802: /* DTH2242 Pen */
632         case 0x10802: /* Intuos4/5 13HD/24HD General Pen */
633                 tool_type = BTN_TOOL_PEN;
634                 break;
635
636         case 0x832: /* Stroke pen */
637         case 0x032:
638                 tool_type = BTN_TOOL_BRUSH;
639                 break;
640
641         case 0x007: /* Mouse 4D and 2D */
642         case 0x09c:
643         case 0x094:
644         case 0x017: /* Intuos3 2D Mouse */
645         case 0x806: /* Intuos4 Mouse */
646                 tool_type = BTN_TOOL_MOUSE;
647                 break;
648
649         case 0x096: /* Lens cursor */
650         case 0x097: /* Intuos3 Lens cursor */
651         case 0x006: /* Intuos4 Lens cursor */
652                 tool_type = BTN_TOOL_LENS;
653                 break;
654
655         case 0x82a: /* Eraser */
656         case 0x84a:
657         case 0x85a:
658         case 0x91a:
659         case 0xd1a:
660         case 0x0fa:
661         case 0x82b: /* Intuos3 Grip Pen Eraser */
662         case 0x81b: /* Intuos3 Classic Pen Eraser */
663         case 0x91b: /* Intuos3 Airbrush Eraser */
664         case 0x80c: /* Intuos4/5 13HD/24HD Marker Pen Eraser */
665         case 0x80a: /* Intuos4/5 13HD/24HD General Pen Eraser */
666         case 0x90a: /* Intuos4/5 13HD/24HD Airbrush Eraser */
667         case 0x1480a: /* Intuos4/5 13HD/24HD Classic Pen Eraser */
668         case 0x1090a: /* Intuos4/5 13HD/24HD Airbrush Eraser */
669         case 0x1080c: /* Intuos4/5 13HD/24HD Art Pen Eraser */
670         case 0x1680a: /* Cintiq 13HD Pro Pen Eraser */
671         case 0x1880a: /* DTH2242 Eraser */
672         case 0x1080a: /* Intuos4/5 13HD/24HD General Pen Eraser */
673                 tool_type = BTN_TOOL_RUBBER;
674                 break;
675
676         case 0xd12:
677         case 0x912:
678         case 0x112:
679         case 0x913: /* Intuos3 Airbrush */
680         case 0x902: /* Intuos4/5 13HD/24HD Airbrush */
681         case 0x10902: /* Intuos4/5 13HD/24HD Airbrush */
682                 tool_type = BTN_TOOL_AIRBRUSH;
683                 break;
684
685         default: /* Unknown tool */
686                 tool_type = BTN_TOOL_PEN;
687                 break;
688         }
689         return tool_type;
690 }
691
692 static void wacom_exit_report(struct wacom_wac *wacom)
693 {
694         struct input_dev *input = wacom->pen_input;
695         struct wacom_features *features = &wacom->features;
696         unsigned char *data = wacom->data;
697         int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
698
699         /*
700          * Reset all states otherwise we lose the initial states
701          * when in-prox next time
702          */
703         input_report_abs(input, ABS_X, 0);
704         input_report_abs(input, ABS_Y, 0);
705         input_report_abs(input, ABS_DISTANCE, 0);
706         input_report_abs(input, ABS_TILT_X, 0);
707         input_report_abs(input, ABS_TILT_Y, 0);
708         if (wacom->tool[idx] >= BTN_TOOL_MOUSE) {
709                 input_report_key(input, BTN_LEFT, 0);
710                 input_report_key(input, BTN_MIDDLE, 0);
711                 input_report_key(input, BTN_RIGHT, 0);
712                 input_report_key(input, BTN_SIDE, 0);
713                 input_report_key(input, BTN_EXTRA, 0);
714                 input_report_abs(input, ABS_THROTTLE, 0);
715                 input_report_abs(input, ABS_RZ, 0);
716         } else {
717                 input_report_abs(input, ABS_PRESSURE, 0);
718                 input_report_key(input, BTN_STYLUS, 0);
719                 input_report_key(input, BTN_STYLUS2, 0);
720                 input_report_key(input, BTN_TOUCH, 0);
721                 input_report_abs(input, ABS_WHEEL, 0);
722                 if (features->type >= INTUOS3S)
723                         input_report_abs(input, ABS_Z, 0);
724         }
725         input_report_key(input, wacom->tool[idx], 0);
726         input_report_abs(input, ABS_MISC, 0); /* reset tool id */
727         input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
728         wacom->id[idx] = 0;
729 }
730
731 static int wacom_intuos_inout(struct wacom_wac *wacom)
732 {
733         struct wacom_features *features = &wacom->features;
734         unsigned char *data = wacom->data;
735         struct input_dev *input = wacom->pen_input;
736         int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
737
738         if (!(((data[1] & 0xfc) == 0xc0) ||  /* in prox */
739             ((data[1] & 0xfe) == 0x20) ||    /* in range */
740             ((data[1] & 0xfe) == 0x80)))     /* out prox */
741                 return 0;
742
743         /* Enter report */
744         if ((data[1] & 0xfc) == 0xc0) {
745                 /* serial number of the tool */
746                 wacom->serial[idx] = ((data[3] & 0x0f) << 28) +
747                         (data[4] << 20) + (data[5] << 12) +
748                         (data[6] << 4) + (data[7] >> 4);
749
750                 wacom->id[idx] = (data[2] << 4) | (data[3] >> 4) |
751                      ((data[7] & 0x0f) << 16) | ((data[8] & 0xf0) << 8);
752
753                 wacom->tool[idx] = wacom_intuos_get_tool_type(wacom->id[idx]);
754
755                 wacom->shared->stylus_in_proximity = true;
756                 return 1;
757         }
758
759         /* in Range */
760         if ((data[1] & 0xfe) == 0x20) {
761                 if (features->type != INTUOSHT2)
762                         wacom->shared->stylus_in_proximity = true;
763
764                 /* in Range while exiting */
765                 if (wacom->reporting_data) {
766                         input_report_key(input, BTN_TOUCH, 0);
767                         input_report_abs(input, ABS_PRESSURE, 0);
768                         input_report_abs(input, ABS_DISTANCE, wacom->features.distance_max);
769                         return 2;
770                 }
771                 return 1;
772         }
773
774         /* Exit report */
775         if ((data[1] & 0xfe) == 0x80) {
776                 wacom->shared->stylus_in_proximity = false;
777                 wacom->reporting_data = false;
778
779                 /* don't report exit if we don't know the ID */
780                 if (!wacom->id[idx])
781                         return 1;
782
783                 wacom_exit_report(wacom);
784                 return 2;
785         }
786
787         return 0;
788 }
789
790 static inline bool report_touch_events(struct wacom_wac *wacom)
791 {
792         return (touch_arbitration ? !wacom->shared->stylus_in_proximity : 1);
793 }
794
795 static inline bool delay_pen_events(struct wacom_wac *wacom)
796 {
797         return (wacom->shared->touch_down && touch_arbitration);
798 }
799
800 static int wacom_intuos_general(struct wacom_wac *wacom)
801 {
802         struct wacom_features *features = &wacom->features;
803         unsigned char *data = wacom->data;
804         struct input_dev *input = wacom->pen_input;
805         int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
806         unsigned char type = (data[1] >> 1) & 0x0F;
807         unsigned int x, y, distance, t;
808
809         if (data[0] != WACOM_REPORT_PENABLED && data[0] != WACOM_REPORT_CINTIQ &&
810                 data[0] != WACOM_REPORT_INTUOS_PEN)
811                 return 0;
812
813         if (delay_pen_events(wacom))
814                 return 1;
815
816         /* don't report events if we don't know the tool ID */
817         if (!wacom->id[idx]) {
818                 /* but reschedule a read of the current tool */
819                 wacom_intuos_schedule_prox_event(wacom);
820                 return 1;
821         }
822
823         /*
824          * don't report events for invalid data
825          */
826         /* older I4 styli don't work with new Cintiqs */
827         if ((!((wacom->id[idx] >> 16) & 0x01) &&
828                         (features->type == WACOM_21UX2)) ||
829             /* Only large Intuos support Lense Cursor */
830             (wacom->tool[idx] == BTN_TOOL_LENS &&
831                 (features->type == INTUOS3 ||
832                  features->type == INTUOS3S ||
833                  features->type == INTUOS4 ||
834                  features->type == INTUOS4S ||
835                  features->type == INTUOS5 ||
836                  features->type == INTUOS5S ||
837                  features->type == INTUOSPM ||
838                  features->type == INTUOSPS)) ||
839            /* Cintiq doesn't send data when RDY bit isn't set */
840            (features->type == CINTIQ && !(data[1] & 0x40)))
841                 return 1;
842
843         x = (be16_to_cpup((__be16 *)&data[2]) << 1) | ((data[9] >> 1) & 1);
844         y = (be16_to_cpup((__be16 *)&data[4]) << 1) | (data[9] & 1);
845         distance = data[9] >> 2;
846         if (features->type < INTUOS3S) {
847                 x >>= 1;
848                 y >>= 1;
849                 distance >>= 1;
850         }
851         input_report_abs(input, ABS_X, x);
852         input_report_abs(input, ABS_Y, y);
853         input_report_abs(input, ABS_DISTANCE, distance);
854
855         switch (type) {
856         case 0x00:
857         case 0x01:
858         case 0x02:
859         case 0x03:
860                 /* general pen packet */
861                 t = (data[6] << 3) | ((data[7] & 0xC0) >> 5) | (data[1] & 1);
862                 if (features->pressure_max < 2047)
863                         t >>= 1;
864                 input_report_abs(input, ABS_PRESSURE, t);
865                 if (features->type != INTUOSHT2) {
866                     input_report_abs(input, ABS_TILT_X,
867                                  (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
868                     input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
869                 }
870                 input_report_key(input, BTN_STYLUS, data[1] & 2);
871                 input_report_key(input, BTN_STYLUS2, data[1] & 4);
872                 input_report_key(input, BTN_TOUCH, t > 10);
873                 break;
874
875         case 0x0a:
876                 /* airbrush second packet */
877                 input_report_abs(input, ABS_WHEEL,
878                                 (data[6] << 2) | ((data[7] >> 6) & 3));
879                 input_report_abs(input, ABS_TILT_X,
880                                  (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
881                 input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
882                 break;
883
884         case 0x05:
885                 /* Rotation packet */
886                 if (features->type >= INTUOS3S) {
887                         /* I3 marker pen rotation */
888                         t = (data[6] << 3) | ((data[7] >> 5) & 7);
889                         t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
890                                 ((t-1) / 2 + 450)) : (450 - t / 2) ;
891                         input_report_abs(input, ABS_Z, t);
892                 } else {
893                         /* 4D mouse 2nd packet */
894                         t = (data[6] << 3) | ((data[7] >> 5) & 7);
895                         input_report_abs(input, ABS_RZ, (data[7] & 0x20) ?
896                                 ((t - 1) / 2) : -t / 2);
897                 }
898                 break;
899
900         case 0x04:
901                 /* 4D mouse 1st packet */
902                 input_report_key(input, BTN_LEFT,   data[8] & 0x01);
903                 input_report_key(input, BTN_MIDDLE, data[8] & 0x02);
904                 input_report_key(input, BTN_RIGHT,  data[8] & 0x04);
905
906                 input_report_key(input, BTN_SIDE,   data[8] & 0x20);
907                 input_report_key(input, BTN_EXTRA,  data[8] & 0x10);
908                 t = (data[6] << 2) | ((data[7] >> 6) & 3);
909                 input_report_abs(input, ABS_THROTTLE, (data[8] & 0x08) ? -t : t);
910                 break;
911
912         case 0x06:
913                 /* I4 mouse */
914                 input_report_key(input, BTN_LEFT,   data[6] & 0x01);
915                 input_report_key(input, BTN_MIDDLE, data[6] & 0x02);
916                 input_report_key(input, BTN_RIGHT,  data[6] & 0x04);
917                 input_report_rel(input, REL_WHEEL, ((data[7] & 0x80) >> 7)
918                                  - ((data[7] & 0x40) >> 6));
919                 input_report_key(input, BTN_SIDE,   data[6] & 0x08);
920                 input_report_key(input, BTN_EXTRA,  data[6] & 0x10);
921
922                 input_report_abs(input, ABS_TILT_X,
923                         (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
924                 input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
925                 break;
926
927         case 0x08:
928                 if (wacom->tool[idx] == BTN_TOOL_MOUSE) {
929                         /* 2D mouse packet */
930                         input_report_key(input, BTN_LEFT,   data[8] & 0x04);
931                         input_report_key(input, BTN_MIDDLE, data[8] & 0x08);
932                         input_report_key(input, BTN_RIGHT,  data[8] & 0x10);
933                         input_report_rel(input, REL_WHEEL, (data[8] & 0x01)
934                                          - ((data[8] & 0x02) >> 1));
935
936                         /* I3 2D mouse side buttons */
937                         if (features->type >= INTUOS3S && features->type <= INTUOS3L) {
938                                 input_report_key(input, BTN_SIDE,   data[8] & 0x40);
939                                 input_report_key(input, BTN_EXTRA,  data[8] & 0x20);
940                         }
941                 }
942                 else if (wacom->tool[idx] == BTN_TOOL_LENS) {
943                         /* Lens cursor packets */
944                         input_report_key(input, BTN_LEFT,   data[8] & 0x01);
945                         input_report_key(input, BTN_MIDDLE, data[8] & 0x02);
946                         input_report_key(input, BTN_RIGHT,  data[8] & 0x04);
947                         input_report_key(input, BTN_SIDE,   data[8] & 0x10);
948                         input_report_key(input, BTN_EXTRA,  data[8] & 0x08);
949                 }
950                 break;
951
952         case 0x07:
953         case 0x09:
954         case 0x0b:
955         case 0x0c:
956         case 0x0d:
957         case 0x0e:
958         case 0x0f:
959                 /* unhandled */
960                 break;
961         }
962
963         input_report_abs(input, ABS_MISC,
964                          wacom_intuos_id_mangle(wacom->id[idx])); /* report tool id */
965         input_report_key(input, wacom->tool[idx], 1);
966         input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
967         wacom->reporting_data = true;
968         return 2;
969 }
970
971 static int wacom_intuos_irq(struct wacom_wac *wacom)
972 {
973         unsigned char *data = wacom->data;
974         struct input_dev *input = wacom->pen_input;
975         int result;
976
977         if (data[0] != WACOM_REPORT_PENABLED &&
978             data[0] != WACOM_REPORT_INTUOS_ID1 &&
979             data[0] != WACOM_REPORT_INTUOS_ID2 &&
980             data[0] != WACOM_REPORT_INTUOSPAD &&
981             data[0] != WACOM_REPORT_INTUOS_PEN &&
982             data[0] != WACOM_REPORT_CINTIQ &&
983             data[0] != WACOM_REPORT_CINTIQPAD &&
984             data[0] != WACOM_REPORT_INTUOS5PAD) {
985                 dev_dbg(input->dev.parent,
986                         "%s: received unknown report #%d\n", __func__, data[0]);
987                 return 0;
988         }
989
990         /* process pad events */
991         result = wacom_intuos_pad(wacom);
992         if (result)
993                 return result;
994
995         /* process in/out prox events */
996         result = wacom_intuos_inout(wacom);
997         if (result)
998                 return result - 1;
999
1000         /* process general packets */
1001         result = wacom_intuos_general(wacom);
1002         if (result)
1003                 return result - 1;
1004
1005         return 0;
1006 }
1007
1008 static int wacom_remote_irq(struct wacom_wac *wacom_wac, size_t len)
1009 {
1010         unsigned char *data = wacom_wac->data;
1011         struct input_dev *input;
1012         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
1013         struct wacom_remote *remote = wacom->remote;
1014         int bat_charging, bat_percent, touch_ring_mode;
1015         __u32 serial;
1016         int i, index = -1;
1017         unsigned long flags;
1018
1019         if (data[0] != WACOM_REPORT_REMOTE) {
1020                 hid_dbg(wacom->hdev, "%s: received unknown report #%d",
1021                         __func__, data[0]);
1022                 return 0;
1023         }
1024
1025         serial = data[3] + (data[4] << 8) + (data[5] << 16);
1026         wacom_wac->id[0] = PAD_DEVICE_ID;
1027
1028         spin_lock_irqsave(&remote->remote_lock, flags);
1029
1030         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1031                 if (remote->remotes[i].serial == serial) {
1032                         index = i;
1033                         break;
1034                 }
1035         }
1036
1037         if (index < 0 || !remote->remotes[index].registered)
1038                 goto out;
1039
1040         input = remote->remotes[index].input;
1041
1042         input_report_key(input, BTN_0, (data[9] & 0x01));
1043         input_report_key(input, BTN_1, (data[9] & 0x02));
1044         input_report_key(input, BTN_2, (data[9] & 0x04));
1045         input_report_key(input, BTN_3, (data[9] & 0x08));
1046         input_report_key(input, BTN_4, (data[9] & 0x10));
1047         input_report_key(input, BTN_5, (data[9] & 0x20));
1048         input_report_key(input, BTN_6, (data[9] & 0x40));
1049         input_report_key(input, BTN_7, (data[9] & 0x80));
1050
1051         input_report_key(input, BTN_8, (data[10] & 0x01));
1052         input_report_key(input, BTN_9, (data[10] & 0x02));
1053         input_report_key(input, BTN_A, (data[10] & 0x04));
1054         input_report_key(input, BTN_B, (data[10] & 0x08));
1055         input_report_key(input, BTN_C, (data[10] & 0x10));
1056         input_report_key(input, BTN_X, (data[10] & 0x20));
1057         input_report_key(input, BTN_Y, (data[10] & 0x40));
1058         input_report_key(input, BTN_Z, (data[10] & 0x80));
1059
1060         input_report_key(input, BTN_BASE, (data[11] & 0x01));
1061         input_report_key(input, BTN_BASE2, (data[11] & 0x02));
1062
1063         if (data[12] & 0x80)
1064                 input_report_abs(input, ABS_WHEEL, (data[12] & 0x7f));
1065         else
1066                 input_report_abs(input, ABS_WHEEL, 0);
1067
1068         bat_percent = data[7] & 0x7f;
1069         bat_charging = !!(data[7] & 0x80);
1070
1071         if (data[9] | data[10] | (data[11] & 0x03) | data[12])
1072                 input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
1073         else
1074                 input_report_abs(input, ABS_MISC, 0);
1075
1076         input_event(input, EV_MSC, MSC_SERIAL, serial);
1077
1078         input_sync(input);
1079
1080         /*Which mode select (LED light) is currently on?*/
1081         touch_ring_mode = (data[11] & 0xC0) >> 6;
1082
1083         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1084                 if (remote->remotes[i].serial == serial)
1085                         wacom->led.groups[i].select = touch_ring_mode;
1086         }
1087
1088         __wacom_notify_battery(&remote->remotes[index].battery,
1089                                 WACOM_POWER_SUPPLY_STATUS_AUTO, bat_percent,
1090                                 bat_charging, 1, bat_charging);
1091
1092 out:
1093         spin_unlock_irqrestore(&remote->remote_lock, flags);
1094         return 0;
1095 }
1096
1097 static void wacom_remote_status_irq(struct wacom_wac *wacom_wac, size_t len)
1098 {
1099         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
1100         unsigned char *data = wacom_wac->data;
1101         struct wacom_remote *remote = wacom->remote;
1102         struct wacom_remote_data remote_data;
1103         unsigned long flags;
1104         int i, ret;
1105
1106         if (data[0] != WACOM_REPORT_DEVICE_LIST)
1107                 return;
1108
1109         memset(&remote_data, 0, sizeof(struct wacom_remote_data));
1110
1111         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1112                 int j = i * 6;
1113                 int serial = (data[j+6] << 16) + (data[j+5] << 8) + data[j+4];
1114                 bool connected = data[j+2];
1115
1116                 remote_data.remote[i].serial = serial;
1117                 remote_data.remote[i].connected = connected;
1118         }
1119
1120         spin_lock_irqsave(&remote->remote_lock, flags);
1121
1122         ret = kfifo_in(&remote->remote_fifo, &remote_data, sizeof(remote_data));
1123         if (ret != sizeof(remote_data)) {
1124                 spin_unlock_irqrestore(&remote->remote_lock, flags);
1125                 hid_err(wacom->hdev, "Can't queue Remote status event.\n");
1126                 return;
1127         }
1128
1129         spin_unlock_irqrestore(&remote->remote_lock, flags);
1130
1131         wacom_schedule_work(wacom_wac, WACOM_WORKER_REMOTE);
1132 }
1133
1134 static int int_dist(int x1, int y1, int x2, int y2)
1135 {
1136         int x = x2 - x1;
1137         int y = y2 - y1;
1138
1139         return int_sqrt(x*x + y*y);
1140 }
1141
1142 static void wacom_intuos_bt_process_data(struct wacom_wac *wacom,
1143                 unsigned char *data)
1144 {
1145         memcpy(wacom->data, data, 10);
1146         wacom_intuos_irq(wacom);
1147
1148         input_sync(wacom->pen_input);
1149         if (wacom->pad_input)
1150                 input_sync(wacom->pad_input);
1151 }
1152
1153 static int wacom_intuos_bt_irq(struct wacom_wac *wacom, size_t len)
1154 {
1155         unsigned char data[WACOM_PKGLEN_MAX];
1156         int i = 1;
1157         unsigned power_raw, battery_capacity, bat_charging, ps_connected;
1158
1159         memcpy(data, wacom->data, len);
1160
1161         switch (data[0]) {
1162         case 0x04:
1163                 wacom_intuos_bt_process_data(wacom, data + i);
1164                 i += 10;
1165                 /* fall through */
1166         case 0x03:
1167                 wacom_intuos_bt_process_data(wacom, data + i);
1168                 i += 10;
1169                 wacom_intuos_bt_process_data(wacom, data + i);
1170                 i += 10;
1171                 power_raw = data[i];
1172                 bat_charging = (power_raw & 0x08) ? 1 : 0;
1173                 ps_connected = (power_raw & 0x10) ? 1 : 0;
1174                 battery_capacity = batcap_i4[power_raw & 0x07];
1175                 wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
1176                                      battery_capacity, bat_charging,
1177                                      battery_capacity || bat_charging,
1178                                      ps_connected);
1179                 break;
1180         default:
1181                 dev_dbg(wacom->pen_input->dev.parent,
1182                                 "Unknown report: %d,%d size:%zu\n",
1183                                 data[0], data[1], len);
1184                 return 0;
1185         }
1186         return 0;
1187 }
1188
1189 static int wacom_wac_finger_count_touches(struct wacom_wac *wacom)
1190 {
1191         struct input_dev *input = wacom->touch_input;
1192         unsigned touch_max = wacom->features.touch_max;
1193         int count = 0;
1194         int i;
1195
1196         if (!touch_max)
1197                 return 0;
1198
1199         if (touch_max == 1)
1200                 return test_bit(BTN_TOUCH, input->key) &&
1201                         report_touch_events(wacom);
1202
1203         for (i = 0; i < input->mt->num_slots; i++) {
1204                 struct input_mt_slot *ps = &input->mt->slots[i];
1205                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
1206                 if (id >= 0)
1207                         count++;
1208         }
1209
1210         return count;
1211 }
1212
1213 static void wacom_intuos_pro2_bt_pen(struct wacom_wac *wacom)
1214 {
1215         int pen_frame_len, pen_frames;
1216
1217         struct input_dev *pen_input = wacom->pen_input;
1218         unsigned char *data = wacom->data;
1219         int i;
1220
1221         if (wacom->features.type == INTUOSP2_BT) {
1222                 wacom->serial[0] = get_unaligned_le64(&data[99]);
1223                 wacom->id[0]     = get_unaligned_le16(&data[107]);
1224                 pen_frame_len = 14;
1225                 pen_frames = 7;
1226         } else {
1227                 wacom->serial[0] = get_unaligned_le64(&data[33]);
1228                 wacom->id[0]     = get_unaligned_le16(&data[41]);
1229                 pen_frame_len = 8;
1230                 pen_frames = 4;
1231         }
1232
1233         if (wacom->serial[0] >> 52 == 1) {
1234                 /* Add back in missing bits of ID for non-USI pens */
1235                 wacom->id[0] |= (wacom->serial[0] >> 32) & 0xFFFFF;
1236         }
1237         wacom->tool[0]   = wacom_intuos_get_tool_type(wacom_intuos_id_mangle(wacom->id[0]));
1238
1239         for (i = 0; i < pen_frames; i++) {
1240                 unsigned char *frame = &data[i*pen_frame_len + 1];
1241                 bool valid = frame[0] & 0x80;
1242                 bool prox = frame[0] & 0x40;
1243                 bool range = frame[0] & 0x20;
1244
1245                 if (!valid)
1246                         continue;
1247
1248                 if (!prox) {
1249                         wacom->shared->stylus_in_proximity = false;
1250                         wacom_exit_report(wacom);
1251                         input_sync(pen_input);
1252                         return;
1253                 }
1254                 if (range) {
1255                         input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1]));
1256                         input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3]));
1257
1258                         if (wacom->features.type == INTUOSP2_BT) {
1259                                 /* Fix rotation alignment: userspace expects zero at left */
1260                                 int16_t rotation =
1261                                         (int16_t)get_unaligned_le16(&frame[9]);
1262                                 rotation += 1800/4;
1263
1264                                 if (rotation > 899)
1265                                         rotation -= 1800;
1266
1267                                 input_report_abs(pen_input, ABS_TILT_X,
1268                                                  (char)frame[7]);
1269                                 input_report_abs(pen_input, ABS_TILT_Y,
1270                                                  (char)frame[8]);
1271                                 input_report_abs(pen_input, ABS_Z, rotation);
1272                                 input_report_abs(pen_input, ABS_WHEEL,
1273                                                  get_unaligned_le16(&frame[11]));
1274                         }
1275                 }
1276                 input_report_abs(pen_input, ABS_PRESSURE, get_unaligned_le16(&frame[5]));
1277                 if (wacom->features.type == INTUOSP2_BT) {
1278                         input_report_abs(pen_input, ABS_DISTANCE,
1279                                          range ? frame[13] : wacom->features.distance_max);
1280                 } else {
1281                         input_report_abs(pen_input, ABS_DISTANCE,
1282                                          range ? frame[7] : wacom->features.distance_max);
1283                 }
1284
1285                 input_report_key(pen_input, BTN_TOUCH, frame[0] & 0x01);
1286                 input_report_key(pen_input, BTN_STYLUS, frame[0] & 0x02);
1287                 input_report_key(pen_input, BTN_STYLUS2, frame[0] & 0x04);
1288
1289                 input_report_key(pen_input, wacom->tool[0], prox);
1290                 input_event(pen_input, EV_MSC, MSC_SERIAL, wacom->serial[0]);
1291                 input_report_abs(pen_input, ABS_MISC,
1292                                  wacom_intuos_id_mangle(wacom->id[0])); /* report tool id */
1293
1294                 wacom->shared->stylus_in_proximity = prox;
1295
1296                 input_sync(pen_input);
1297         }
1298 }
1299
1300 static void wacom_intuos_pro2_bt_touch(struct wacom_wac *wacom)
1301 {
1302         const int finger_touch_len = 8;
1303         const int finger_frames = 4;
1304         const int finger_frame_len = 43;
1305
1306         struct input_dev *touch_input = wacom->touch_input;
1307         unsigned char *data = wacom->data;
1308         int num_contacts_left = 5;
1309         int i, j;
1310
1311         for (i = 0; i < finger_frames; i++) {
1312                 unsigned char *frame = &data[i*finger_frame_len + 109];
1313                 int current_num_contacts = frame[0] & 0x7F;
1314                 int contacts_to_send;
1315
1316                 if (!(frame[0] & 0x80))
1317                         continue;
1318
1319                 /*
1320                  * First packet resets the counter since only the first
1321                  * packet in series will have non-zero current_num_contacts.
1322                  */
1323                 if (current_num_contacts)
1324                         wacom->num_contacts_left = current_num_contacts;
1325
1326                 contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);
1327
1328                 for (j = 0; j < contacts_to_send; j++) {
1329                         unsigned char *touch = &frame[j*finger_touch_len + 1];
1330                         int slot = input_mt_get_slot_by_key(touch_input, touch[0]);
1331                         int x = get_unaligned_le16(&touch[2]);
1332                         int y = get_unaligned_le16(&touch[4]);
1333                         int w = touch[6] * input_abs_get_res(touch_input, ABS_MT_POSITION_X);
1334                         int h = touch[7] * input_abs_get_res(touch_input, ABS_MT_POSITION_Y);
1335
1336                         if (slot < 0)
1337                                 continue;
1338
1339                         input_mt_slot(touch_input, slot);
1340                         input_mt_report_slot_state(touch_input, MT_TOOL_FINGER, touch[1] & 0x01);
1341                         input_report_abs(touch_input, ABS_MT_POSITION_X, x);
1342                         input_report_abs(touch_input, ABS_MT_POSITION_Y, y);
1343                         input_report_abs(touch_input, ABS_MT_TOUCH_MAJOR, max(w, h));
1344                         input_report_abs(touch_input, ABS_MT_TOUCH_MINOR, min(w, h));
1345                         input_report_abs(touch_input, ABS_MT_ORIENTATION, w > h);
1346                 }
1347
1348                 input_mt_sync_frame(touch_input);
1349
1350                 wacom->num_contacts_left -= contacts_to_send;
1351                 if (wacom->num_contacts_left <= 0) {
1352                         wacom->num_contacts_left = 0;
1353                         wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1354                 }
1355         }
1356
1357         input_report_switch(touch_input, SW_MUTE_DEVICE, !(data[281] >> 7));
1358         input_sync(touch_input);
1359 }
1360
1361 static void wacom_intuos_pro2_bt_pad(struct wacom_wac *wacom)
1362 {
1363         struct input_dev *pad_input = wacom->pad_input;
1364         unsigned char *data = wacom->data;
1365
1366         int buttons = (data[282] << 1) | ((data[281] >> 6) & 0x01);
1367         int ring = data[285] & 0x7F;
1368         bool ringstatus = data[285] & 0x80;
1369         bool prox = buttons || ringstatus;
1370
1371         /* Fix touchring data: userspace expects 0 at left and increasing clockwise */
1372         ring = 71 - ring;
1373         ring += 3*72/16;
1374         if (ring > 71)
1375                 ring -= 72;
1376
1377         wacom_report_numbered_buttons(pad_input, 9, buttons);
1378
1379         input_report_abs(pad_input, ABS_WHEEL, ringstatus ? ring : 0);
1380
1381         input_report_key(pad_input, wacom->tool[1], prox ? 1 : 0);
1382         input_report_abs(pad_input, ABS_MISC, prox ? PAD_DEVICE_ID : 0);
1383         input_event(pad_input, EV_MSC, MSC_SERIAL, 0xffffffff);
1384
1385         input_sync(pad_input);
1386 }
1387
1388 static void wacom_intuos_pro2_bt_battery(struct wacom_wac *wacom)
1389 {
1390         unsigned char *data = wacom->data;
1391
1392         bool chg = data[284] & 0x80;
1393         int battery_status = data[284] & 0x7F;
1394
1395         wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
1396                              battery_status, chg, 1, chg);
1397 }
1398
1399 static void wacom_intuos_gen3_bt_pad(struct wacom_wac *wacom)
1400 {
1401         struct input_dev *pad_input = wacom->pad_input;
1402         unsigned char *data = wacom->data;
1403
1404         int buttons = data[44];
1405
1406         wacom_report_numbered_buttons(pad_input, 4, buttons);
1407
1408         input_report_key(pad_input, wacom->tool[1], buttons ? 1 : 0);
1409         input_report_abs(pad_input, ABS_MISC, buttons ? PAD_DEVICE_ID : 0);
1410         input_event(pad_input, EV_MSC, MSC_SERIAL, 0xffffffff);
1411
1412         input_sync(pad_input);
1413 }
1414
1415 static void wacom_intuos_gen3_bt_battery(struct wacom_wac *wacom)
1416 {
1417         unsigned char *data = wacom->data;
1418
1419         bool chg = data[45] & 0x80;
1420         int battery_status = data[45] & 0x7F;
1421
1422         wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
1423                              battery_status, chg, 1, chg);
1424 }
1425
1426 static int wacom_intuos_pro2_bt_irq(struct wacom_wac *wacom, size_t len)
1427 {
1428         unsigned char *data = wacom->data;
1429
1430         if (data[0] != 0x80 && data[0] != 0x81) {
1431                 dev_dbg(wacom->pen_input->dev.parent,
1432                         "%s: received unknown report #%d\n", __func__, data[0]);
1433                 return 0;
1434         }
1435
1436         wacom_intuos_pro2_bt_pen(wacom);
1437         if (wacom->features.type == INTUOSP2_BT) {
1438                 wacom_intuos_pro2_bt_touch(wacom);
1439                 wacom_intuos_pro2_bt_pad(wacom);
1440                 wacom_intuos_pro2_bt_battery(wacom);
1441         } else {
1442                 wacom_intuos_gen3_bt_pad(wacom);
1443                 wacom_intuos_gen3_bt_battery(wacom);
1444         }
1445         return 0;
1446 }
1447
1448 static int wacom_24hdt_irq(struct wacom_wac *wacom)
1449 {
1450         struct input_dev *input = wacom->touch_input;
1451         unsigned char *data = wacom->data;
1452         int i;
1453         int current_num_contacts = data[61];
1454         int contacts_to_send = 0;
1455         int num_contacts_left = 4; /* maximum contacts per packet */
1456         int byte_per_packet = WACOM_BYTES_PER_24HDT_PACKET;
1457         int y_offset = 2;
1458
1459         if (wacom->features.type == WACOM_27QHDT) {
1460                 current_num_contacts = data[63];
1461                 num_contacts_left = 10;
1462                 byte_per_packet = WACOM_BYTES_PER_QHDTHID_PACKET;
1463                 y_offset = 0;
1464         }
1465
1466         /*
1467          * First packet resets the counter since only the first
1468          * packet in series will have non-zero current_num_contacts.
1469          */
1470         if (current_num_contacts)
1471                 wacom->num_contacts_left = current_num_contacts;
1472
1473         contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);
1474
1475         for (i = 0; i < contacts_to_send; i++) {
1476                 int offset = (byte_per_packet * i) + 1;
1477                 bool touch = (data[offset] & 0x1) && report_touch_events(wacom);
1478                 int slot = input_mt_get_slot_by_key(input, data[offset + 1]);
1479
1480                 if (slot < 0)
1481                         continue;
1482                 input_mt_slot(input, slot);
1483                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
1484
1485                 if (touch) {
1486                         int t_x = get_unaligned_le16(&data[offset + 2]);
1487                         int t_y = get_unaligned_le16(&data[offset + 4 + y_offset]);
1488
1489                         input_report_abs(input, ABS_MT_POSITION_X, t_x);
1490                         input_report_abs(input, ABS_MT_POSITION_Y, t_y);
1491
1492                         if (wacom->features.type != WACOM_27QHDT) {
1493                                 int c_x = get_unaligned_le16(&data[offset + 4]);
1494                                 int c_y = get_unaligned_le16(&data[offset + 8]);
1495                                 int w = get_unaligned_le16(&data[offset + 10]);
1496                                 int h = get_unaligned_le16(&data[offset + 12]);
1497
1498                                 input_report_abs(input, ABS_MT_TOUCH_MAJOR, min(w,h));
1499                                 input_report_abs(input, ABS_MT_WIDTH_MAJOR,
1500                                                  min(w, h) + int_dist(t_x, t_y, c_x, c_y));
1501                                 input_report_abs(input, ABS_MT_WIDTH_MINOR, min(w, h));
1502                                 input_report_abs(input, ABS_MT_ORIENTATION, w > h);
1503                         }
1504                 }
1505         }
1506         input_mt_sync_frame(input);
1507
1508         wacom->num_contacts_left -= contacts_to_send;
1509         if (wacom->num_contacts_left <= 0) {
1510                 wacom->num_contacts_left = 0;
1511                 wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1512         }
1513         return 1;
1514 }
1515
1516 static int wacom_mt_touch(struct wacom_wac *wacom)
1517 {
1518         struct input_dev *input = wacom->touch_input;
1519         unsigned char *data = wacom->data;
1520         int i;
1521         int current_num_contacts = data[2];
1522         int contacts_to_send = 0;
1523         int x_offset = 0;
1524
1525         /* MTTPC does not support Height and Width */
1526         if (wacom->features.type == MTTPC || wacom->features.type == MTTPC_B)
1527                 x_offset = -4;
1528
1529         /*
1530          * First packet resets the counter since only the first
1531          * packet in series will have non-zero current_num_contacts.
1532          */
1533         if (current_num_contacts)
1534                 wacom->num_contacts_left = current_num_contacts;
1535
1536         /* There are at most 5 contacts per packet */
1537         contacts_to_send = min(5, wacom->num_contacts_left);
1538
1539         for (i = 0; i < contacts_to_send; i++) {
1540                 int offset = (WACOM_BYTES_PER_MT_PACKET + x_offset) * i + 3;
1541                 bool touch = (data[offset] & 0x1) && report_touch_events(wacom);
1542                 int id = get_unaligned_le16(&data[offset + 1]);
1543                 int slot = input_mt_get_slot_by_key(input, id);
1544
1545                 if (slot < 0)
1546                         continue;
1547
1548                 input_mt_slot(input, slot);
1549                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
1550                 if (touch) {
1551                         int x = get_unaligned_le16(&data[offset + x_offset + 7]);
1552                         int y = get_unaligned_le16(&data[offset + x_offset + 9]);
1553                         input_report_abs(input, ABS_MT_POSITION_X, x);
1554                         input_report_abs(input, ABS_MT_POSITION_Y, y);
1555                 }
1556         }
1557         input_mt_sync_frame(input);
1558
1559         wacom->num_contacts_left -= contacts_to_send;
1560         if (wacom->num_contacts_left <= 0) {
1561                 wacom->num_contacts_left = 0;
1562                 wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1563         }
1564         return 1;
1565 }
1566
1567 static int wacom_tpc_mt_touch(struct wacom_wac *wacom)
1568 {
1569         struct input_dev *input = wacom->touch_input;
1570         unsigned char *data = wacom->data;
1571         int i;
1572
1573         for (i = 0; i < 2; i++) {
1574                 int p = data[1] & (1 << i);
1575                 bool touch = p && report_touch_events(wacom);
1576
1577                 input_mt_slot(input, i);
1578                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
1579                 if (touch) {
1580                         int x = le16_to_cpup((__le16 *)&data[i * 2 + 2]) & 0x7fff;
1581                         int y = le16_to_cpup((__le16 *)&data[i * 2 + 6]) & 0x7fff;
1582
1583                         input_report_abs(input, ABS_MT_POSITION_X, x);
1584                         input_report_abs(input, ABS_MT_POSITION_Y, y);
1585                 }
1586         }
1587         input_mt_sync_frame(input);
1588
1589         /* keep touch state for pen event */
1590         wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1591
1592         return 1;
1593 }
1594
1595 static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len)
1596 {
1597         unsigned char *data = wacom->data;
1598         struct input_dev *input = wacom->touch_input;
1599         bool prox = report_touch_events(wacom);
1600         int x = 0, y = 0;
1601
1602         if (wacom->features.touch_max > 1 || len > WACOM_PKGLEN_TPC2FG)
1603                 return 0;
1604
1605         if (len == WACOM_PKGLEN_TPC1FG) {
1606                 prox = prox && (data[0] & 0x01);
1607                 x = get_unaligned_le16(&data[1]);
1608                 y = get_unaligned_le16(&data[3]);
1609         } else if (len == WACOM_PKGLEN_TPC1FG_B) {
1610                 prox = prox && (data[2] & 0x01);
1611                 x = get_unaligned_le16(&data[3]);
1612                 y = get_unaligned_le16(&data[5]);
1613         } else {
1614                 prox = prox && (data[1] & 0x01);
1615                 x = le16_to_cpup((__le16 *)&data[2]);
1616                 y = le16_to_cpup((__le16 *)&data[4]);
1617         }
1618
1619         if (prox) {
1620                 input_report_abs(input, ABS_X, x);
1621                 input_report_abs(input, ABS_Y, y);
1622         }
1623         input_report_key(input, BTN_TOUCH, prox);
1624
1625         /* keep touch state for pen events */
1626         wacom->shared->touch_down = prox;
1627
1628         return 1;
1629 }
1630
1631 static int wacom_tpc_pen(struct wacom_wac *wacom)
1632 {
1633         unsigned char *data = wacom->data;
1634         struct input_dev *input = wacom->pen_input;
1635         bool prox = data[1] & 0x20;
1636
1637         if (!wacom->shared->stylus_in_proximity) /* first in prox */
1638                 /* Going into proximity select tool */
1639                 wacom->tool[0] = (data[1] & 0x0c) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
1640
1641         /* keep pen state for touch events */
1642         wacom->shared->stylus_in_proximity = prox;
1643
1644         /* send pen events only when touch is up or forced out
1645          * or touch arbitration is off
1646          */
1647         if (!delay_pen_events(wacom)) {
1648                 input_report_key(input, BTN_STYLUS, data[1] & 0x02);
1649                 input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
1650                 input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
1651                 input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
1652                 input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x07) << 8) | data[6]);
1653                 input_report_key(input, BTN_TOUCH, data[1] & 0x05);
1654                 input_report_key(input, wacom->tool[0], prox);
1655                 return 1;
1656         }
1657
1658         return 0;
1659 }
1660
1661 static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
1662 {
1663         unsigned char *data = wacom->data;
1664
1665         if (wacom->pen_input) {
1666                 dev_dbg(wacom->pen_input->dev.parent,
1667                         "%s: received report #%d\n", __func__, data[0]);
1668
1669                 if (len == WACOM_PKGLEN_PENABLED ||
1670                     data[0] == WACOM_REPORT_PENABLED)
1671                         return wacom_tpc_pen(wacom);
1672         }
1673         else if (wacom->touch_input) {
1674                 dev_dbg(wacom->touch_input->dev.parent,
1675                         "%s: received report #%d\n", __func__, data[0]);
1676
1677                 switch (len) {
1678                 case WACOM_PKGLEN_TPC1FG:
1679                         return wacom_tpc_single_touch(wacom, len);
1680
1681                 case WACOM_PKGLEN_TPC2FG:
1682                         return wacom_tpc_mt_touch(wacom);
1683
1684                 default:
1685                         switch (data[0]) {
1686                         case WACOM_REPORT_TPC1FG:
1687                         case WACOM_REPORT_TPCHID:
1688                         case WACOM_REPORT_TPCST:
1689                         case WACOM_REPORT_TPC1FGE:
1690                                 return wacom_tpc_single_touch(wacom, len);
1691
1692                         case WACOM_REPORT_TPCMT:
1693                         case WACOM_REPORT_TPCMT2:
1694                                 return wacom_mt_touch(wacom);
1695
1696                         }
1697                 }
1698         }
1699
1700         return 0;
1701 }
1702
1703 static int wacom_offset_rotation(struct input_dev *input, struct hid_usage *usage,
1704                                  int value, int num, int denom)
1705 {
1706         struct input_absinfo *abs = &input->absinfo[usage->code];
1707         int range = (abs->maximum - abs->minimum + 1);
1708
1709         value += num*range/denom;
1710         if (value > abs->maximum)
1711                 value -= range;
1712         else if (value < abs->minimum)
1713                 value += range;
1714         return value;
1715 }
1716
1717 int wacom_equivalent_usage(int usage)
1718 {
1719         if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMDIGITIZER) {
1720                 int subpage = (usage & 0xFF00) << 8;
1721                 int subusage = (usage & 0xFF);
1722
1723                 if (subpage == WACOM_HID_SP_PAD ||
1724                     subpage == WACOM_HID_SP_BUTTON ||
1725                     subpage == WACOM_HID_SP_DIGITIZER ||
1726                     subpage == WACOM_HID_SP_DIGITIZERINFO ||
1727                     usage == WACOM_HID_WD_SENSE ||
1728                     usage == WACOM_HID_WD_SERIALHI ||
1729                     usage == WACOM_HID_WD_TOOLTYPE ||
1730                     usage == WACOM_HID_WD_DISTANCE ||
1731                     usage == WACOM_HID_WD_TOUCHSTRIP ||
1732                     usage == WACOM_HID_WD_TOUCHSTRIP2 ||
1733                     usage == WACOM_HID_WD_TOUCHRING ||
1734                     usage == WACOM_HID_WD_TOUCHRINGSTATUS ||
1735                     usage == WACOM_HID_WD_REPORT_VALID) {
1736                         return usage;
1737                 }
1738
1739                 if (subpage == HID_UP_UNDEFINED)
1740                         subpage = HID_UP_DIGITIZER;
1741
1742                 return subpage | subusage;
1743         }
1744
1745         if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMTOUCH) {
1746                 int subpage = (usage & 0xFF00) << 8;
1747                 int subusage = (usage & 0xFF);
1748
1749                 if (subpage == HID_UP_UNDEFINED)
1750                         subpage = WACOM_HID_SP_DIGITIZER;
1751
1752                 return subpage | subusage;
1753         }
1754
1755         return usage;
1756 }
1757
1758 static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage,
1759                 struct hid_field *field, __u8 type, __u16 code, int fuzz)
1760 {
1761         struct wacom *wacom = input_get_drvdata(input);
1762         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1763         struct wacom_features *features = &wacom_wac->features;
1764         int fmin = field->logical_minimum;
1765         int fmax = field->logical_maximum;
1766         unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
1767         int resolution_code = code;
1768
1769         if (equivalent_usage == HID_DG_TWIST) {
1770                 resolution_code = ABS_RZ;
1771         }
1772
1773         if (equivalent_usage == HID_GD_X) {
1774                 fmin += features->offset_left;
1775                 fmax -= features->offset_right;
1776         }
1777         if (equivalent_usage == HID_GD_Y) {
1778                 fmin += features->offset_top;
1779                 fmax -= features->offset_bottom;
1780         }
1781
1782         usage->type = type;
1783         usage->code = code;
1784
1785         set_bit(type, input->evbit);
1786
1787         switch (type) {
1788         case EV_ABS:
1789                 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
1790                 input_abs_set_res(input, code,
1791                                   hidinput_calc_abs_res(field, resolution_code));
1792                 break;
1793         case EV_KEY:
1794                 input_set_capability(input, EV_KEY, code);
1795                 break;
1796         case EV_MSC:
1797                 input_set_capability(input, EV_MSC, code);
1798                 break;
1799         case EV_SW:
1800                 input_set_capability(input, EV_SW, code);
1801                 break;
1802         }
1803 }
1804
1805 static void wacom_wac_battery_usage_mapping(struct hid_device *hdev,
1806                 struct hid_field *field, struct hid_usage *usage)
1807 {
1808         struct wacom *wacom = hid_get_drvdata(hdev);
1809         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1810         struct wacom_features *features = &wacom_wac->features;
1811         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1812
1813         switch (equivalent_usage) {
1814         case HID_DG_BATTERYSTRENGTH:
1815         case WACOM_HID_WD_BATTERY_LEVEL:
1816         case WACOM_HID_WD_BATTERY_CHARGING:
1817                 features->quirks |= WACOM_QUIRK_BATTERY;
1818                 break;
1819         }
1820 }
1821
1822 static void wacom_wac_battery_event(struct hid_device *hdev, struct hid_field *field,
1823                 struct hid_usage *usage, __s32 value)
1824 {
1825         struct wacom *wacom = hid_get_drvdata(hdev);
1826         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1827         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1828
1829         switch (equivalent_usage) {
1830         case HID_DG_BATTERYSTRENGTH:
1831                 if (value == 0) {
1832                         wacom_wac->hid_data.bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
1833                 }
1834                 else {
1835                         value = value * 100 / (field->logical_maximum - field->logical_minimum);
1836                         wacom_wac->hid_data.battery_capacity = value;
1837                         wacom_wac->hid_data.bat_connected = 1;
1838                         wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
1839                 }
1840                 break;
1841         case WACOM_HID_WD_BATTERY_LEVEL:
1842                 value = value * 100 / (field->logical_maximum - field->logical_minimum);
1843                 wacom_wac->hid_data.battery_capacity = value;
1844                 wacom_wac->hid_data.bat_connected = 1;
1845                 wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
1846                 break;
1847         case WACOM_HID_WD_BATTERY_CHARGING:
1848                 wacom_wac->hid_data.bat_charging = value;
1849                 wacom_wac->hid_data.ps_connected = value;
1850                 wacom_wac->hid_data.bat_connected = 1;
1851                 wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
1852                 break;
1853         }
1854 }
1855
1856 static void wacom_wac_battery_pre_report(struct hid_device *hdev,
1857                 struct hid_report *report)
1858 {
1859         return;
1860 }
1861
1862 static void wacom_wac_battery_report(struct hid_device *hdev,
1863                 struct hid_report *report)
1864 {
1865         struct wacom *wacom = hid_get_drvdata(hdev);
1866         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1867         struct wacom_features *features = &wacom_wac->features;
1868
1869         if (features->quirks & WACOM_QUIRK_BATTERY) {
1870                 int status = wacom_wac->hid_data.bat_status;
1871                 int capacity = wacom_wac->hid_data.battery_capacity;
1872                 bool charging = wacom_wac->hid_data.bat_charging;
1873                 bool connected = wacom_wac->hid_data.bat_connected;
1874                 bool powered = wacom_wac->hid_data.ps_connected;
1875
1876                 wacom_notify_battery(wacom_wac, status, capacity, charging,
1877                                      connected, powered);
1878         }
1879 }
1880
1881 static void wacom_wac_pad_usage_mapping(struct hid_device *hdev,
1882                 struct hid_field *field, struct hid_usage *usage)
1883 {
1884         struct wacom *wacom = hid_get_drvdata(hdev);
1885         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1886         struct wacom_features *features = &wacom_wac->features;
1887         struct input_dev *input = wacom_wac->pad_input;
1888         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1889
1890         switch (equivalent_usage) {
1891         case WACOM_HID_WD_ACCELEROMETER_X:
1892                 __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
1893                 wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 0);
1894                 features->device_type |= WACOM_DEVICETYPE_PAD;
1895                 break;
1896         case WACOM_HID_WD_ACCELEROMETER_Y:
1897                 __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
1898                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 0);
1899                 features->device_type |= WACOM_DEVICETYPE_PAD;
1900                 break;
1901         case WACOM_HID_WD_ACCELEROMETER_Z:
1902                 __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
1903                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
1904                 features->device_type |= WACOM_DEVICETYPE_PAD;
1905                 break;
1906         case WACOM_HID_WD_BUTTONCENTER:
1907                 wacom->generic_has_leds = true;
1908                 /* fall through */
1909         case WACOM_HID_WD_BUTTONHOME:
1910         case WACOM_HID_WD_BUTTONUP:
1911         case WACOM_HID_WD_BUTTONDOWN:
1912         case WACOM_HID_WD_BUTTONLEFT:
1913         case WACOM_HID_WD_BUTTONRIGHT:
1914                 wacom_map_usage(input, usage, field, EV_KEY,
1915                                 wacom_numbered_button_to_key(features->numbered_buttons),
1916                                 0);
1917                 features->numbered_buttons++;
1918                 features->device_type |= WACOM_DEVICETYPE_PAD;
1919                 break;
1920         case WACOM_HID_WD_TOUCHONOFF:
1921         case WACOM_HID_WD_MUTE_DEVICE:
1922                 /*
1923                  * This usage, which is used to mute touch events, comes
1924                  * from the pad packet, but is reported on the touch
1925                  * interface. Because the touch interface may not have
1926                  * been created yet, we cannot call wacom_map_usage(). In
1927                  * order to process this usage when we receive it, we set
1928                  * the usage type and code directly.
1929                  */
1930                 wacom_wac->has_mute_touch_switch = true;
1931                 usage->type = EV_SW;
1932                 usage->code = SW_MUTE_DEVICE;
1933                 features->device_type |= WACOM_DEVICETYPE_PAD;
1934                 break;
1935         case WACOM_HID_WD_TOUCHSTRIP:
1936                 wacom_map_usage(input, usage, field, EV_ABS, ABS_RX, 0);
1937                 features->device_type |= WACOM_DEVICETYPE_PAD;
1938                 break;
1939         case WACOM_HID_WD_TOUCHSTRIP2:
1940                 wacom_map_usage(input, usage, field, EV_ABS, ABS_RY, 0);
1941                 features->device_type |= WACOM_DEVICETYPE_PAD;
1942                 break;
1943         case WACOM_HID_WD_TOUCHRING:
1944                 wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
1945                 features->device_type |= WACOM_DEVICETYPE_PAD;
1946                 break;
1947         case WACOM_HID_WD_TOUCHRINGSTATUS:
1948                 /*
1949                  * Only set up type/code association. Completely mapping
1950                  * this usage may overwrite the axis resolution and range.
1951                  */
1952                 usage->type = EV_ABS;
1953                 usage->code = ABS_WHEEL;
1954                 set_bit(EV_ABS, input->evbit);
1955                 features->device_type |= WACOM_DEVICETYPE_PAD;
1956                 break;
1957         case WACOM_HID_WD_BUTTONCONFIG:
1958                 wacom_map_usage(input, usage, field, EV_KEY, KEY_BUTTONCONFIG, 0);
1959                 features->device_type |= WACOM_DEVICETYPE_PAD;
1960                 break;
1961         case WACOM_HID_WD_ONSCREEN_KEYBOARD:
1962                 wacom_map_usage(input, usage, field, EV_KEY, KEY_ONSCREEN_KEYBOARD, 0);
1963                 features->device_type |= WACOM_DEVICETYPE_PAD;
1964                 break;
1965         case WACOM_HID_WD_CONTROLPANEL:
1966                 wacom_map_usage(input, usage, field, EV_KEY, KEY_CONTROLPANEL, 0);
1967                 features->device_type |= WACOM_DEVICETYPE_PAD;
1968                 break;
1969         case WACOM_HID_WD_MODE_CHANGE:
1970                 /* do not overwrite previous data */
1971                 if (!wacom_wac->has_mode_change) {
1972                         wacom_wac->has_mode_change = true;
1973                         wacom_wac->is_direct_mode = true;
1974                 }
1975                 features->device_type |= WACOM_DEVICETYPE_PAD;
1976                 break;
1977         }
1978
1979         switch (equivalent_usage & 0xfffffff0) {
1980         case WACOM_HID_WD_EXPRESSKEY00:
1981                 wacom_map_usage(input, usage, field, EV_KEY,
1982                                 wacom_numbered_button_to_key(features->numbered_buttons),
1983                                 0);
1984                 features->numbered_buttons++;
1985                 features->device_type |= WACOM_DEVICETYPE_PAD;
1986                 break;
1987         }
1988 }
1989
1990 static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field,
1991                 struct hid_usage *usage, __s32 value)
1992 {
1993         struct wacom *wacom = hid_get_drvdata(hdev);
1994         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1995         struct input_dev *input = wacom_wac->pad_input;
1996         struct wacom_features *features = &wacom_wac->features;
1997         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1998         int i;
1999         bool do_report = false;
2000
2001         /*
2002          * Avoid reporting this event and setting inrange_state if this usage
2003          * hasn't been mapped.
2004          */
2005         if (!usage->type && equivalent_usage != WACOM_HID_WD_MODE_CHANGE)
2006                 return;
2007
2008         if (wacom_equivalent_usage(field->physical) == HID_DG_TABLETFUNCTIONKEY) {
2009                 if (usage->hid != WACOM_HID_WD_TOUCHRING)
2010                         wacom_wac->hid_data.inrange_state |= value;
2011         }
2012
2013         switch (equivalent_usage) {
2014         case WACOM_HID_WD_TOUCHRING:
2015                 /*
2016                  * Userspace expects touchrings to increase in value with
2017                  * clockwise gestures and have their zero point at the
2018                  * tablet's left. HID events "should" be clockwise-
2019                  * increasing and zero at top, though the MobileStudio
2020                  * Pro and 2nd-gen Intuos Pro don't do this...
2021                  */
2022                 if (hdev->vendor == 0x56a &&
2023                     (hdev->product == 0x34d || hdev->product == 0x34e ||  /* MobileStudio Pro */
2024                      hdev->product == 0x357 || hdev->product == 0x358)) { /* Intuos Pro 2 */
2025                         value = (field->logical_maximum - value);
2026
2027                         if (hdev->product == 0x357 || hdev->product == 0x358)
2028                                 value = wacom_offset_rotation(input, usage, value, 3, 16);
2029                         else if (hdev->product == 0x34d || hdev->product == 0x34e)
2030                                 value = wacom_offset_rotation(input, usage, value, 1, 2);
2031                 }
2032                 else {
2033                         value = wacom_offset_rotation(input, usage, value, 1, 4);
2034                 }
2035                 do_report = true;
2036                 break;
2037         case WACOM_HID_WD_TOUCHRINGSTATUS:
2038                 if (!value)
2039                         input_event(input, usage->type, usage->code, 0);
2040                 break;
2041
2042         case WACOM_HID_WD_MUTE_DEVICE:
2043         case WACOM_HID_WD_TOUCHONOFF:
2044                 if (wacom_wac->shared->touch_input) {
2045                         bool *is_touch_on = &wacom_wac->shared->is_touch_on;
2046
2047                         if (equivalent_usage == WACOM_HID_WD_MUTE_DEVICE && value)
2048                                 *is_touch_on = !(*is_touch_on);
2049                         else if (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)
2050                                 *is_touch_on = value;
2051
2052                         input_report_switch(wacom_wac->shared->touch_input,
2053                                             SW_MUTE_DEVICE, !(*is_touch_on));
2054                         input_sync(wacom_wac->shared->touch_input);
2055                 }
2056                 break;
2057
2058         case WACOM_HID_WD_MODE_CHANGE:
2059                 if (wacom_wac->is_direct_mode != value) {
2060                         wacom_wac->is_direct_mode = value;
2061                         wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_MODE_CHANGE);
2062                 }
2063                 break;
2064
2065         case WACOM_HID_WD_BUTTONCENTER:
2066                 for (i = 0; i < wacom->led.count; i++)
2067                         wacom_update_led(wacom, features->numbered_buttons,
2068                                          value, i);
2069                  /* fall through*/
2070         default:
2071                 do_report = true;
2072                 break;
2073         }
2074
2075         if (do_report) {
2076                 input_event(input, usage->type, usage->code, value);
2077                 if (value)
2078                         wacom_wac->hid_data.pad_input_event_flag = true;
2079         }
2080 }
2081
2082 static void wacom_wac_pad_pre_report(struct hid_device *hdev,
2083                 struct hid_report *report)
2084 {
2085         struct wacom *wacom = hid_get_drvdata(hdev);
2086         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2087
2088         wacom_wac->hid_data.inrange_state = 0;
2089 }
2090
2091 static void wacom_wac_pad_report(struct hid_device *hdev,
2092                 struct hid_report *report, struct hid_field *field)
2093 {
2094         struct wacom *wacom = hid_get_drvdata(hdev);
2095         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2096         struct input_dev *input = wacom_wac->pad_input;
2097         bool active = wacom_wac->hid_data.inrange_state != 0;
2098
2099         /* report prox for expresskey events */
2100         if ((wacom_equivalent_usage(field->physical) == HID_DG_TABLETFUNCTIONKEY) &&
2101             wacom_wac->hid_data.pad_input_event_flag) {
2102                 input_event(input, EV_ABS, ABS_MISC, active ? PAD_DEVICE_ID : 0);
2103                 input_sync(input);
2104                 if (!active)
2105                         wacom_wac->hid_data.pad_input_event_flag = false;
2106         }
2107
2108 }
2109
2110 static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
2111                 struct hid_field *field, struct hid_usage *usage)
2112 {
2113         struct wacom *wacom = hid_get_drvdata(hdev);
2114         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2115         struct wacom_features *features = &wacom_wac->features;
2116         struct input_dev *input = wacom_wac->pen_input;
2117         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2118
2119         switch (equivalent_usage) {
2120         case HID_GD_X:
2121                 wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 4);
2122                 break;
2123         case HID_GD_Y:
2124                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
2125                 break;
2126         case WACOM_HID_WD_DISTANCE:
2127         case HID_GD_Z:
2128                 wacom_map_usage(input, usage, field, EV_ABS, ABS_DISTANCE, 0);
2129                 break;
2130         case HID_DG_TIPPRESSURE:
2131                 wacom_map_usage(input, usage, field, EV_ABS, ABS_PRESSURE, 0);
2132                 break;
2133         case HID_DG_INRANGE:
2134                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOOL_PEN, 0);
2135                 break;
2136         case HID_DG_INVERT:
2137                 wacom_map_usage(input, usage, field, EV_KEY,
2138                                 BTN_TOOL_RUBBER, 0);
2139                 break;
2140         case HID_DG_TILT_X:
2141                 wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_X, 0);
2142                 break;
2143         case HID_DG_TILT_Y:
2144                 wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_Y, 0);
2145                 break;
2146         case HID_DG_TWIST:
2147                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
2148                 break;
2149         case HID_DG_ERASER:
2150         case HID_DG_TIPSWITCH:
2151                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
2152                 break;
2153         case HID_DG_BARRELSWITCH:
2154                 wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS, 0);
2155                 break;
2156         case HID_DG_BARRELSWITCH2:
2157                 wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS2, 0);
2158                 break;
2159         case HID_DG_TOOLSERIALNUMBER:
2160                 features->quirks |= WACOM_QUIRK_TOOLSERIAL;
2161                 wacom_map_usage(input, usage, field, EV_MSC, MSC_SERIAL, 0);
2162
2163                 /* Adjust AES usages to match modern convention */
2164                 if (usage->hid == WACOM_HID_WT_SERIALNUMBER && field->report_size == 16) {
2165                         if (field->index + 2 < field->report->maxfield) {
2166                                 struct hid_field *a = field->report->field[field->index + 1];
2167                                 struct hid_field *b = field->report->field[field->index + 2];
2168
2169                                 if (a->maxusage > 0 && a->usage[0].hid == HID_DG_TOOLSERIALNUMBER && a->report_size == 32 &&
2170                                     b->maxusage > 0 && b->usage[0].hid == 0xFF000000 && b->report_size == 8) {
2171                                         features->quirks |= WACOM_QUIRK_AESPEN;
2172                                         usage->hid = WACOM_HID_WD_TOOLTYPE;
2173                                         field->logical_minimum = S16_MIN;
2174                                         field->logical_maximum = S16_MAX;
2175                                         a->logical_minimum = S32_MIN;
2176                                         a->logical_maximum = S32_MAX;
2177                                         b->usage[0].hid = WACOM_HID_WD_SERIALHI;
2178                                         b->logical_minimum = 0;
2179                                         b->logical_maximum = U8_MAX;
2180                                 }
2181                         }
2182                 }
2183                 break;
2184         case WACOM_HID_WD_SENSE:
2185                 features->quirks |= WACOM_QUIRK_SENSE;
2186                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOOL_PEN, 0);
2187                 break;
2188         case WACOM_HID_WD_SERIALHI:
2189                 wacom_map_usage(input, usage, field, EV_ABS, ABS_MISC, 0);
2190
2191                 if (!(features->quirks & WACOM_QUIRK_AESPEN)) {
2192                         set_bit(EV_KEY, input->evbit);
2193                         input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
2194                         input_set_capability(input, EV_KEY, BTN_TOOL_RUBBER);
2195                         input_set_capability(input, EV_KEY, BTN_TOOL_BRUSH);
2196                         input_set_capability(input, EV_KEY, BTN_TOOL_PENCIL);
2197                         input_set_capability(input, EV_KEY, BTN_TOOL_AIRBRUSH);
2198                         if (!(features->device_type & WACOM_DEVICETYPE_DIRECT)) {
2199                                 input_set_capability(input, EV_KEY, BTN_TOOL_MOUSE);
2200                                 input_set_capability(input, EV_KEY, BTN_TOOL_LENS);
2201                         }
2202                 }
2203                 break;
2204         case WACOM_HID_WD_FINGERWHEEL:
2205                 wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
2206                 break;
2207         }
2208 }
2209
2210 static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field,
2211                 struct hid_usage *usage, __s32 value)
2212 {
2213         struct wacom *wacom = hid_get_drvdata(hdev);
2214         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2215         struct wacom_features *features = &wacom_wac->features;
2216         struct input_dev *input = wacom_wac->pen_input;
2217         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2218
2219         if (wacom_wac->is_invalid_bt_frame)
2220                 return;
2221
2222         switch (equivalent_usage) {
2223         case HID_GD_Z:
2224                 /*
2225                  * HID_GD_Z "should increase as the control's position is
2226                  * moved from high to low", while ABS_DISTANCE instead
2227                  * increases in value as the tool moves from low to high.
2228                  */
2229                 value = field->logical_maximum - value;
2230                 break;
2231         case HID_DG_INRANGE:
2232                 wacom_wac->hid_data.inrange_state = value;
2233                 if (!(features->quirks & WACOM_QUIRK_SENSE))
2234                         wacom_wac->hid_data.sense_state = value;
2235                 return;
2236         case HID_DG_INVERT:
2237                 wacom_wac->hid_data.invert_state = value;
2238                 return;
2239         case HID_DG_ERASER:
2240         case HID_DG_TIPSWITCH:
2241                 wacom_wac->hid_data.tipswitch |= value;
2242                 return;
2243         case HID_DG_BARRELSWITCH:
2244                 wacom_wac->hid_data.barrelswitch = value;
2245                 return;
2246         case HID_DG_BARRELSWITCH2:
2247                 wacom_wac->hid_data.barrelswitch2 = value;
2248                 return;
2249         case HID_DG_TOOLSERIALNUMBER:
2250                 if (value) {
2251                         wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFFULL);
2252                         wacom_wac->serial[0] |= (__u32)value;
2253                 }
2254                 return;
2255         case HID_DG_TWIST:
2256                 /*
2257                  * Userspace expects pen twist to have its zero point when
2258                  * the buttons/finger is on the tablet's left. HID values
2259                  * are zero when buttons are toward the top.
2260                  */
2261                 value = wacom_offset_rotation(input, usage, value, 1, 4);
2262                 break;
2263         case WACOM_HID_WD_SENSE:
2264                 wacom_wac->hid_data.sense_state = value;
2265                 return;
2266         case WACOM_HID_WD_SERIALHI:
2267                 if (value) {
2268                         wacom_wac->serial[0] = (wacom_wac->serial[0] & 0xFFFFFFFF);
2269                         wacom_wac->serial[0] |= ((__u64)value) << 32;
2270                         /*
2271                          * Non-USI EMR devices may contain additional tool type
2272                          * information here. See WACOM_HID_WD_TOOLTYPE case for
2273                          * more details.
2274                          */
2275                         if (value >> 20 == 1) {
2276                                 wacom_wac->id[0] |= value & 0xFFFFF;
2277                         }
2278                 }
2279                 return;
2280         case WACOM_HID_WD_TOOLTYPE:
2281                 /*
2282                  * Some devices (MobileStudio Pro, and possibly later
2283                  * devices as well) do not return the complete tool
2284                  * type in their WACOM_HID_WD_TOOLTYPE usage. Use a
2285                  * bitwise OR so the complete value can be built
2286                  * up over time :(
2287                  */
2288                 wacom_wac->id[0] |= value;
2289                 return;
2290         case WACOM_HID_WD_OFFSETLEFT:
2291                 if (features->offset_left && value != features->offset_left)
2292                         hid_warn(hdev, "%s: overriding existing left offset "
2293                                  "%d -> %d\n", __func__, value,
2294                                  features->offset_left);
2295                 features->offset_left = value;
2296                 return;
2297         case WACOM_HID_WD_OFFSETRIGHT:
2298                 if (features->offset_right && value != features->offset_right)
2299                         hid_warn(hdev, "%s: overriding existing right offset "
2300                                  "%d -> %d\n", __func__, value,
2301                                  features->offset_right);
2302                 features->offset_right = value;
2303                 return;
2304         case WACOM_HID_WD_OFFSETTOP:
2305                 if (features->offset_top && value != features->offset_top)
2306                         hid_warn(hdev, "%s: overriding existing top offset "
2307                                  "%d -> %d\n", __func__, value,
2308                                  features->offset_top);
2309                 features->offset_top = value;
2310                 return;
2311         case WACOM_HID_WD_OFFSETBOTTOM:
2312                 if (features->offset_bottom && value != features->offset_bottom)
2313                         hid_warn(hdev, "%s: overriding existing bottom offset "
2314                                  "%d -> %d\n", __func__, value,
2315                                  features->offset_bottom);
2316                 features->offset_bottom = value;
2317                 return;
2318         case WACOM_HID_WD_REPORT_VALID:
2319                 wacom_wac->is_invalid_bt_frame = !value;
2320                 return;
2321         }
2322
2323         /* send pen events only when touch is up or forced out
2324          * or touch arbitration is off
2325          */
2326         if (!usage->type || delay_pen_events(wacom_wac))
2327                 return;
2328
2329         /* send pen events only when the pen is in range */
2330         if (wacom_wac->hid_data.inrange_state)
2331                 input_event(input, usage->type, usage->code, value);
2332         else if (wacom_wac->shared->stylus_in_proximity && !wacom_wac->hid_data.sense_state)
2333                 input_event(input, usage->type, usage->code, 0);
2334 }
2335
2336 static void wacom_wac_pen_pre_report(struct hid_device *hdev,
2337                 struct hid_report *report)
2338 {
2339         struct wacom *wacom = hid_get_drvdata(hdev);
2340         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2341
2342         wacom_wac->is_invalid_bt_frame = false;
2343         return;
2344 }
2345
2346 static void wacom_wac_pen_report(struct hid_device *hdev,
2347                 struct hid_report *report)
2348 {
2349         struct wacom *wacom = hid_get_drvdata(hdev);
2350         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2351         struct input_dev *input = wacom_wac->pen_input;
2352         bool range = wacom_wac->hid_data.inrange_state;
2353         bool sense = wacom_wac->hid_data.sense_state;
2354
2355         if (wacom_wac->is_invalid_bt_frame)
2356                 return;
2357
2358         if (!wacom_wac->tool[0] && range) { /* first in range */
2359                 /* Going into range select tool */
2360                 if (wacom_wac->hid_data.invert_state)
2361                         wacom_wac->tool[0] = BTN_TOOL_RUBBER;
2362                 else if (wacom_wac->id[0])
2363                         wacom_wac->tool[0] = wacom_intuos_get_tool_type(wacom_wac->id[0]);
2364                 else
2365                         wacom_wac->tool[0] = BTN_TOOL_PEN;
2366         }
2367
2368         /* keep pen state for touch events */
2369         wacom_wac->shared->stylus_in_proximity = sense;
2370
2371         if (!delay_pen_events(wacom_wac) && wacom_wac->tool[0]) {
2372                 int id = wacom_wac->id[0];
2373                 int sw_state = wacom_wac->hid_data.barrelswitch |
2374                                (wacom_wac->hid_data.barrelswitch2 << 1);
2375
2376                 input_report_key(input, BTN_STYLUS, sw_state == 1);
2377                 input_report_key(input, BTN_STYLUS2, sw_state == 2);
2378                 input_report_key(input, BTN_STYLUS3, sw_state == 3);
2379
2380                 /*
2381                  * Non-USI EMR tools should have their IDs mangled to
2382                  * match the legacy behavior of wacom_intuos_general
2383                  */
2384                 if (wacom_wac->serial[0] >> 52 == 1)
2385                         id = wacom_intuos_id_mangle(id);
2386
2387                 /*
2388                  * To ensure compatibility with xf86-input-wacom, we should
2389                  * report the BTN_TOOL_* event prior to the ABS_MISC or
2390                  * MSC_SERIAL events.
2391                  */
2392                 input_report_key(input, BTN_TOUCH,
2393                                 wacom_wac->hid_data.tipswitch);
2394                 input_report_key(input, wacom_wac->tool[0], sense);
2395                 if (wacom_wac->serial[0]) {
2396                         input_event(input, EV_MSC, MSC_SERIAL, wacom_wac->serial[0]);
2397                         input_report_abs(input, ABS_MISC, sense ? id : 0);
2398                 }
2399
2400                 wacom_wac->hid_data.tipswitch = false;
2401
2402                 input_sync(input);
2403         }
2404
2405         if (!sense) {
2406                 wacom_wac->tool[0] = 0;
2407                 wacom_wac->id[0] = 0;
2408                 wacom_wac->serial[0] = 0;
2409         }
2410 }
2411
2412 static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
2413                 struct hid_field *field, struct hid_usage *usage)
2414 {
2415         struct wacom *wacom = hid_get_drvdata(hdev);
2416         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2417         struct input_dev *input = wacom_wac->touch_input;
2418         unsigned touch_max = wacom_wac->features.touch_max;
2419         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2420
2421         switch (equivalent_usage) {
2422         case HID_GD_X:
2423                 if (touch_max == 1)
2424                         wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 4);
2425                 else
2426                         wacom_map_usage(input, usage, field, EV_ABS,
2427                                         ABS_MT_POSITION_X, 4);
2428                 break;
2429         case HID_GD_Y:
2430                 if (touch_max == 1)
2431                         wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
2432                 else
2433                         wacom_map_usage(input, usage, field, EV_ABS,
2434                                         ABS_MT_POSITION_Y, 4);
2435                 break;
2436         case HID_DG_WIDTH:
2437         case HID_DG_HEIGHT:
2438                 wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MAJOR, 0);
2439                 wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MINOR, 0);
2440                 input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
2441                 break;
2442         case HID_DG_TIPSWITCH:
2443                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
2444                 break;
2445         case HID_DG_CONTACTCOUNT:
2446                 wacom_wac->hid_data.cc_report = field->report->id;
2447                 wacom_wac->hid_data.cc_index = field->index;
2448                 wacom_wac->hid_data.cc_value_index = usage->usage_index;
2449                 break;
2450         case HID_DG_CONTACTID:
2451                 if ((field->logical_maximum - field->logical_minimum) < touch_max) {
2452                         /*
2453                          * The HID descriptor for G11 sensors leaves logical
2454                          * maximum set to '1' despite it being a multitouch
2455                          * device. Override to a sensible number.
2456                          */
2457                         field->logical_maximum = 255;
2458                 }
2459                 break;
2460         }
2461 }
2462
2463 static void wacom_wac_finger_slot(struct wacom_wac *wacom_wac,
2464                 struct input_dev *input)
2465 {
2466         struct hid_data *hid_data = &wacom_wac->hid_data;
2467         bool mt = wacom_wac->features.touch_max > 1;
2468         bool prox = hid_data->tipswitch &&
2469                     report_touch_events(wacom_wac);
2470
2471         if (wacom_wac->shared->has_mute_touch_switch &&
2472             !wacom_wac->shared->is_touch_on) {
2473                 if (!wacom_wac->shared->touch_down)
2474                         return;
2475                 prox = 0;
2476         }
2477
2478         wacom_wac->hid_data.num_received++;
2479         if (wacom_wac->hid_data.num_received > wacom_wac->hid_data.num_expected)
2480                 return;
2481
2482         if (mt) {
2483                 int slot;
2484
2485                 slot = input_mt_get_slot_by_key(input, hid_data->id);
2486                 input_mt_slot(input, slot);
2487                 input_mt_report_slot_state(input, MT_TOOL_FINGER, prox);
2488         }
2489         else {
2490                 input_report_key(input, BTN_TOUCH, prox);
2491         }
2492
2493         if (prox) {
2494                 input_report_abs(input, mt ? ABS_MT_POSITION_X : ABS_X,
2495                                  hid_data->x);
2496                 input_report_abs(input, mt ? ABS_MT_POSITION_Y : ABS_Y,
2497                                  hid_data->y);
2498
2499                 if (test_bit(ABS_MT_TOUCH_MAJOR, input->absbit)) {
2500                         input_report_abs(input, ABS_MT_TOUCH_MAJOR, max(hid_data->width, hid_data->height));
2501                         input_report_abs(input, ABS_MT_TOUCH_MINOR, min(hid_data->width, hid_data->height));
2502                         if (hid_data->width != hid_data->height)
2503                                 input_report_abs(input, ABS_MT_ORIENTATION, hid_data->width <= hid_data->height ? 0 : 1);
2504                 }
2505         }
2506 }
2507
2508 static void wacom_wac_finger_event(struct hid_device *hdev,
2509                 struct hid_field *field, struct hid_usage *usage, __s32 value)
2510 {
2511         struct wacom *wacom = hid_get_drvdata(hdev);
2512         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2513         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2514
2515         switch (equivalent_usage) {
2516         case HID_GD_X:
2517                 wacom_wac->hid_data.x = value;
2518                 break;
2519         case HID_GD_Y:
2520                 wacom_wac->hid_data.y = value;
2521                 break;
2522         case HID_DG_WIDTH:
2523                 wacom_wac->hid_data.width = value;
2524                 break;
2525         case HID_DG_HEIGHT:
2526                 wacom_wac->hid_data.height = value;
2527                 break;
2528         case HID_DG_CONTACTID:
2529                 wacom_wac->hid_data.id = value;
2530                 break;
2531         case HID_DG_TIPSWITCH:
2532                 wacom_wac->hid_data.tipswitch = value;
2533                 break;
2534         }
2535
2536
2537         if (usage->usage_index + 1 == field->report_count) {
2538                 if (equivalent_usage == wacom_wac->hid_data.last_slot_field)
2539                         wacom_wac_finger_slot(wacom_wac, wacom_wac->touch_input);
2540         }
2541 }
2542
2543 static void wacom_wac_finger_pre_report(struct hid_device *hdev,
2544                 struct hid_report *report)
2545 {
2546         struct wacom *wacom = hid_get_drvdata(hdev);
2547         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2548         struct hid_data* hid_data = &wacom_wac->hid_data;
2549         int i;
2550
2551         for (i = 0; i < report->maxfield; i++) {
2552                 struct hid_field *field = report->field[i];
2553                 int j;
2554
2555                 for (j = 0; j < field->maxusage; j++) {
2556                         struct hid_usage *usage = &field->usage[j];
2557                         unsigned int equivalent_usage =
2558                                 wacom_equivalent_usage(usage->hid);
2559
2560                         switch (equivalent_usage) {
2561                         case HID_GD_X:
2562                         case HID_GD_Y:
2563                         case HID_DG_WIDTH:
2564                         case HID_DG_HEIGHT:
2565                         case HID_DG_CONTACTID:
2566                         case HID_DG_INRANGE:
2567                         case HID_DG_INVERT:
2568                         case HID_DG_TIPSWITCH:
2569                                 hid_data->last_slot_field = equivalent_usage;
2570                                 break;
2571                         case HID_DG_CONTACTCOUNT:
2572                                 hid_data->cc_report = report->id;
2573                                 hid_data->cc_index = i;
2574                                 hid_data->cc_value_index = j;
2575                                 break;
2576                         }
2577                 }
2578         }
2579
2580         if (hid_data->cc_report != 0 &&
2581             hid_data->cc_index >= 0) {
2582                 struct hid_field *field = report->field[hid_data->cc_index];
2583                 int value = field->value[hid_data->cc_value_index];
2584                 if (value)
2585                         hid_data->num_expected = value;
2586         }
2587         else {
2588                 hid_data->num_expected = wacom_wac->features.touch_max;
2589         }
2590 }
2591
2592 static void wacom_wac_finger_report(struct hid_device *hdev,
2593                 struct hid_report *report)
2594 {
2595         struct wacom *wacom = hid_get_drvdata(hdev);
2596         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2597         struct input_dev *input = wacom_wac->touch_input;
2598         unsigned touch_max = wacom_wac->features.touch_max;
2599
2600         /* If more packets of data are expected, give us a chance to
2601          * process them rather than immediately syncing a partial
2602          * update.
2603          */
2604         if (wacom_wac->hid_data.num_received < wacom_wac->hid_data.num_expected)
2605                 return;
2606
2607         if (touch_max > 1)
2608                 input_mt_sync_frame(input);
2609
2610         input_sync(input);
2611         wacom_wac->hid_data.num_received = 0;
2612
2613         /* keep touch state for pen event */
2614         wacom_wac->shared->touch_down = wacom_wac_finger_count_touches(wacom_wac);
2615 }
2616
2617 void wacom_wac_usage_mapping(struct hid_device *hdev,
2618                 struct hid_field *field, struct hid_usage *usage)
2619 {
2620         struct wacom *wacom = hid_get_drvdata(hdev);
2621         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2622         struct wacom_features *features = &wacom_wac->features;
2623
2624         if (WACOM_DIRECT_DEVICE(field))
2625                 features->device_type |= WACOM_DEVICETYPE_DIRECT;
2626
2627         /* usage tests must precede field tests */
2628         if (WACOM_BATTERY_USAGE(usage))
2629                 wacom_wac_battery_usage_mapping(hdev, field, usage);
2630         else if (WACOM_PAD_FIELD(field))
2631                 wacom_wac_pad_usage_mapping(hdev, field, usage);
2632         else if (WACOM_PEN_FIELD(field))
2633                 wacom_wac_pen_usage_mapping(hdev, field, usage);
2634         else if (WACOM_FINGER_FIELD(field))
2635                 wacom_wac_finger_usage_mapping(hdev, field, usage);
2636 }
2637
2638 void wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
2639                 struct hid_usage *usage, __s32 value)
2640 {
2641         struct wacom *wacom = hid_get_drvdata(hdev);
2642
2643         if (wacom->wacom_wac.features.type != HID_GENERIC)
2644                 return;
2645
2646         if (value > field->logical_maximum || value < field->logical_minimum)
2647                 return;
2648
2649         /* usage tests must precede field tests */
2650         if (WACOM_BATTERY_USAGE(usage))
2651                 wacom_wac_battery_event(hdev, field, usage, value);
2652         else if (WACOM_PAD_FIELD(field) && wacom->wacom_wac.pad_input)
2653                 wacom_wac_pad_event(hdev, field, usage, value);
2654         else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
2655                 wacom_wac_pen_event(hdev, field, usage, value);
2656         else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
2657                 wacom_wac_finger_event(hdev, field, usage, value);
2658 }
2659
2660 static void wacom_report_events(struct hid_device *hdev,
2661                                 struct hid_report *report, int collection_index,
2662                                 int field_index)
2663 {
2664         int r;
2665
2666         for (r = field_index; r < report->maxfield; r++) {
2667                 struct hid_field *field;
2668                 unsigned count, n;
2669
2670                 field = report->field[r];
2671                 count = field->report_count;
2672
2673                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
2674                         continue;
2675
2676                 for (n = 0 ; n < count; n++) {
2677                         if (field->usage[n].collection_index == collection_index)
2678                                 wacom_wac_event(hdev, field, &field->usage[n],
2679                                                 field->value[n]);
2680                         else
2681                                 return;
2682                 }
2683         }
2684 }
2685
2686 static int wacom_wac_collection(struct hid_device *hdev, struct hid_report *report,
2687                          int collection_index, struct hid_field *field,
2688                          int field_index)
2689 {
2690         struct wacom *wacom = hid_get_drvdata(hdev);
2691
2692         wacom_report_events(hdev, report, collection_index, field_index);
2693
2694         /*
2695          * Non-input reports may be sent prior to the device being
2696          * completely initialized. Since only their events need
2697          * to be processed, exit after 'wacom_report_events' has
2698          * been called to prevent potential crashes in the report-
2699          * processing functions.
2700          */
2701         if (report->type != HID_INPUT_REPORT)
2702                 return -1;
2703
2704         if (WACOM_PAD_FIELD(field) && wacom->wacom_wac.pad_input)
2705                 wacom_wac_pad_report(hdev, report, field);
2706         else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
2707                 wacom_wac_pen_report(hdev, report);
2708         else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
2709                 wacom_wac_finger_report(hdev, report);
2710
2711         return 0;
2712 }
2713
2714 void wacom_wac_report(struct hid_device *hdev, struct hid_report *report)
2715 {
2716         struct wacom *wacom = hid_get_drvdata(hdev);
2717         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2718         struct hid_field *field;
2719         bool pad_in_hid_field = false, pen_in_hid_field = false,
2720                 finger_in_hid_field = false;
2721         int r;
2722         int prev_collection = -1;
2723
2724         if (wacom_wac->features.type != HID_GENERIC)
2725                 return;
2726
2727         for (r = 0; r < report->maxfield; r++) {
2728                 field = report->field[r];
2729
2730                 if (WACOM_PAD_FIELD(field))
2731                         pad_in_hid_field = true;
2732                 if (WACOM_PEN_FIELD(field))
2733                         pen_in_hid_field = true;
2734                 if (WACOM_FINGER_FIELD(field))
2735                         finger_in_hid_field = true;
2736         }
2737
2738         wacom_wac_battery_pre_report(hdev, report);
2739
2740         if (pad_in_hid_field && wacom->wacom_wac.pad_input)
2741                 wacom_wac_pad_pre_report(hdev, report);
2742         if (pen_in_hid_field && wacom->wacom_wac.pen_input)
2743                 wacom_wac_pen_pre_report(hdev, report);
2744         if (finger_in_hid_field && wacom->wacom_wac.touch_input)
2745                 wacom_wac_finger_pre_report(hdev, report);
2746
2747         for (r = 0; r < report->maxfield; r++) {
2748                 field = report->field[r];
2749
2750                 if (field->usage[0].collection_index != prev_collection) {
2751                         if (wacom_wac_collection(hdev, report,
2752                                 field->usage[0].collection_index, field, r) < 0)
2753                                 return;
2754                         prev_collection = field->usage[0].collection_index;
2755                 }
2756         }
2757
2758         wacom_wac_battery_report(hdev, report);
2759 }
2760
2761 static int wacom_bpt_touch(struct wacom_wac *wacom)
2762 {
2763         struct wacom_features *features = &wacom->features;
2764         struct input_dev *input = wacom->touch_input;
2765         struct input_dev *pad_input = wacom->pad_input;
2766         unsigned char *data = wacom->data;
2767         int i;
2768
2769         if (data[0] != 0x02)
2770             return 0;
2771
2772         for (i = 0; i < 2; i++) {
2773                 int offset = (data[1] & 0x80) ? (8 * i) : (9 * i);
2774                 bool touch = report_touch_events(wacom)
2775                            && (data[offset + 3] & 0x80);
2776
2777                 input_mt_slot(input, i);
2778                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
2779                 if (touch) {
2780                         int x = get_unaligned_be16(&data[offset + 3]) & 0x7ff;
2781                         int y = get_unaligned_be16(&data[offset + 5]) & 0x7ff;
2782                         if (features->quirks & WACOM_QUIRK_BBTOUCH_LOWRES) {
2783                                 x <<= 5;
2784                                 y <<= 5;
2785                         }
2786                         input_report_abs(input, ABS_MT_POSITION_X, x);
2787                         input_report_abs(input, ABS_MT_POSITION_Y, y);
2788                 }
2789         }
2790
2791         input_mt_sync_frame(input);
2792
2793         input_report_key(pad_input, BTN_LEFT, (data[1] & 0x08) != 0);
2794         input_report_key(pad_input, BTN_FORWARD, (data[1] & 0x04) != 0);
2795         input_report_key(pad_input, BTN_BACK, (data[1] & 0x02) != 0);
2796         input_report_key(pad_input, BTN_RIGHT, (data[1] & 0x01) != 0);
2797         wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
2798
2799         return 1;
2800 }
2801
2802 static void wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data)
2803 {
2804         struct wacom_features *features = &wacom->features;
2805         struct input_dev *input = wacom->touch_input;
2806         bool touch = data[1] & 0x80;
2807         int slot = input_mt_get_slot_by_key(input, data[0]);
2808
2809         if (slot < 0)
2810                 return;
2811
2812         touch = touch && report_touch_events(wacom);
2813
2814         input_mt_slot(input, slot);
2815         input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
2816
2817         if (touch) {
2818                 int x = (data[2] << 4) | (data[4] >> 4);
2819                 int y = (data[3] << 4) | (data[4] & 0x0f);
2820                 int width, height;
2821
2822                 if (features->type >= INTUOSPS && features->type <= INTUOSHT2) {
2823                         width  = data[5] * 100;
2824                         height = data[6] * 100;
2825                 } else {
2826                         /*
2827                          * "a" is a scaled-down area which we assume is
2828                          * roughly circular and which can be described as:
2829                          * a=(pi*r^2)/C.
2830                          */
2831                         int a = data[5];
2832                         int x_res = input_abs_get_res(input, ABS_MT_POSITION_X);
2833                         int y_res = input_abs_get_res(input, ABS_MT_POSITION_Y);
2834                         width = 2 * int_sqrt(a * WACOM_CONTACT_AREA_SCALE);
2835                         height = width * y_res / x_res;
2836                 }
2837
2838                 input_report_abs(input, ABS_MT_POSITION_X, x);
2839                 input_report_abs(input, ABS_MT_POSITION_Y, y);
2840                 input_report_abs(input, ABS_MT_TOUCH_MAJOR, width);
2841                 input_report_abs(input, ABS_MT_TOUCH_MINOR, height);
2842         }
2843 }
2844
2845 static void wacom_bpt3_button_msg(struct wacom_wac *wacom, unsigned char *data)
2846 {
2847         struct input_dev *input = wacom->pad_input;
2848         struct wacom_features *features = &wacom->features;
2849
2850         if (features->type == INTUOSHT || features->type == INTUOSHT2) {
2851                 input_report_key(input, BTN_LEFT, (data[1] & 0x02) != 0);
2852                 input_report_key(input, BTN_BACK, (data[1] & 0x08) != 0);
2853         } else {
2854                 input_report_key(input, BTN_BACK, (data[1] & 0x02) != 0);
2855                 input_report_key(input, BTN_LEFT, (data[1] & 0x08) != 0);
2856         }
2857         input_report_key(input, BTN_FORWARD, (data[1] & 0x04) != 0);
2858         input_report_key(input, BTN_RIGHT, (data[1] & 0x01) != 0);
2859 }
2860
2861 static int wacom_bpt3_touch(struct wacom_wac *wacom)
2862 {
2863         unsigned char *data = wacom->data;
2864         int count = data[1] & 0x07;
2865         int  touch_changed = 0, i;
2866
2867         if (data[0] != 0x02)
2868             return 0;
2869
2870         /* data has up to 7 fixed sized 8-byte messages starting at data[2] */
2871         for (i = 0; i < count; i++) {
2872                 int offset = (8 * i) + 2;
2873                 int msg_id = data[offset];
2874
2875                 if (msg_id >= 2 && msg_id <= 17) {
2876                         wacom_bpt3_touch_msg(wacom, data + offset);
2877                         touch_changed++;
2878                 } else if (msg_id == 128)
2879                         wacom_bpt3_button_msg(wacom, data + offset);
2880
2881         }
2882
2883         /* only update touch if we actually have a touchpad and touch data changed */
2884         if (wacom->touch_input && touch_changed) {
2885                 input_mt_sync_frame(wacom->touch_input);
2886                 wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
2887         }
2888
2889         return 1;
2890 }
2891
2892 static int wacom_bpt_pen(struct wacom_wac *wacom)
2893 {
2894         struct wacom_features *features = &wacom->features;
2895         struct input_dev *input = wacom->pen_input;
2896         unsigned char *data = wacom->data;
2897         int prox = 0, x = 0, y = 0, p = 0, d = 0, pen = 0, btn1 = 0, btn2 = 0;
2898
2899         if (data[0] != WACOM_REPORT_PENABLED)
2900             return 0;
2901
2902         prox = (data[1] & 0x20) == 0x20;
2903
2904         /*
2905          * All reports shared between PEN and RUBBER tool must be
2906          * forced to a known starting value (zero) when transitioning to
2907          * out-of-prox.
2908          *
2909          * If not reset then, to userspace, it will look like lost events
2910          * if new tool comes in-prox with same values as previous tool sent.
2911          *
2912          * Hardware does report zero in most out-of-prox cases but not all.
2913          */
2914         if (!wacom->shared->stylus_in_proximity) {
2915                 if (data[1] & 0x08) {
2916                         wacom->tool[0] = BTN_TOOL_RUBBER;
2917                         wacom->id[0] = ERASER_DEVICE_ID;
2918                 } else {
2919                         wacom->tool[0] = BTN_TOOL_PEN;
2920                         wacom->id[0] = STYLUS_DEVICE_ID;
2921                 }
2922         }
2923
2924         wacom->shared->stylus_in_proximity = prox;
2925         if (delay_pen_events(wacom))
2926                 return 0;
2927
2928         if (prox) {
2929                 x = le16_to_cpup((__le16 *)&data[2]);
2930                 y = le16_to_cpup((__le16 *)&data[4]);
2931                 p = le16_to_cpup((__le16 *)&data[6]);
2932                 /*
2933                  * Convert distance from out prox to distance from tablet.
2934                  * distance will be greater than distance_max once
2935                  * touching and applying pressure; do not report negative
2936                  * distance.
2937                  */
2938                 if (data[8] <= features->distance_max)
2939                         d = features->distance_max - data[8];
2940
2941                 pen = data[1] & 0x01;
2942                 btn1 = data[1] & 0x02;
2943                 btn2 = data[1] & 0x04;
2944         } else {
2945                 wacom->id[0] = 0;
2946         }
2947
2948         input_report_key(input, BTN_TOUCH, pen);
2949         input_report_key(input, BTN_STYLUS, btn1);
2950         input_report_key(input, BTN_STYLUS2, btn2);
2951
2952         input_report_abs(input, ABS_X, x);
2953         input_report_abs(input, ABS_Y, y);
2954         input_report_abs(input, ABS_PRESSURE, p);
2955         input_report_abs(input, ABS_DISTANCE, d);
2956
2957         input_report_key(input, wacom->tool[0], prox); /* PEN or RUBBER */
2958         input_report_abs(input, ABS_MISC, wacom->id[0]); /* TOOL ID */
2959
2960         return 1;
2961 }
2962
2963 static int wacom_bpt_irq(struct wacom_wac *wacom, size_t len)
2964 {
2965         struct wacom_features *features = &wacom->features;
2966
2967         if ((features->type == INTUOSHT2) &&
2968             (features->device_type & WACOM_DEVICETYPE_PEN))
2969                 return wacom_intuos_irq(wacom);
2970         else if (len == WACOM_PKGLEN_BBTOUCH)
2971                 return wacom_bpt_touch(wacom);
2972         else if (len == WACOM_PKGLEN_BBTOUCH3)
2973                 return wacom_bpt3_touch(wacom);
2974         else if (len == WACOM_PKGLEN_BBFUN || len == WACOM_PKGLEN_BBPEN)
2975                 return wacom_bpt_pen(wacom);
2976
2977         return 0;
2978 }
2979
2980 static void wacom_bamboo_pad_pen_event(struct wacom_wac *wacom,
2981                 unsigned char *data)
2982 {
2983         unsigned char prefix;
2984
2985         /*
2986          * We need to reroute the event from the debug interface to the
2987          * pen interface.
2988          * We need to add the report ID to the actual pen report, so we
2989          * temporary overwrite the first byte to prevent having to kzalloc/kfree
2990          * and memcpy the report.
2991          */
2992         prefix = data[0];
2993         data[0] = WACOM_REPORT_BPAD_PEN;
2994
2995         /*
2996          * actually reroute the event.
2997          * No need to check if wacom->shared->pen is valid, hid_input_report()
2998          * will check for us.
2999          */
3000         hid_input_report(wacom->shared->pen, HID_INPUT_REPORT, data,
3001                          WACOM_PKGLEN_PENABLED, 1);
3002
3003         data[0] = prefix;
3004 }
3005
3006 static int wacom_bamboo_pad_touch_event(struct wacom_wac *wacom,
3007                 unsigned char *data)
3008 {
3009         struct input_dev *input = wacom->touch_input;
3010         unsigned char *finger_data, prefix;
3011         unsigned id;
3012         int x, y;
3013         bool valid;
3014
3015         prefix = data[0];
3016
3017         for (id = 0; id < wacom->features.touch_max; id++) {
3018                 valid = !!(prefix & BIT(id)) &&
3019                         report_touch_events(wacom);
3020
3021                 input_mt_slot(input, id);
3022                 input_mt_report_slot_state(input, MT_TOOL_FINGER, valid);
3023
3024                 if (!valid)
3025                         continue;
3026
3027                 finger_data = data + 1 + id * 3;
3028                 x = finger_data[0] | ((finger_data[1] & 0x0f) << 8);
3029                 y = (finger_data[2] << 4) | (finger_data[1] >> 4);
3030
3031                 input_report_abs(input, ABS_MT_POSITION_X, x);
3032                 input_report_abs(input, ABS_MT_POSITION_Y, y);
3033         }
3034
3035         input_mt_sync_frame(input);
3036
3037         input_report_key(input, BTN_LEFT, prefix & 0x40);
3038         input_report_key(input, BTN_RIGHT, prefix & 0x80);
3039
3040         /* keep touch state for pen event */
3041         wacom->shared->touch_down = !!prefix && report_touch_events(wacom);
3042
3043         return 1;
3044 }
3045
3046 static int wacom_bamboo_pad_irq(struct wacom_wac *wacom, size_t len)
3047 {
3048         unsigned char *data = wacom->data;
3049
3050         if (!((len == WACOM_PKGLEN_BPAD_TOUCH) ||
3051               (len == WACOM_PKGLEN_BPAD_TOUCH_USB)) ||
3052             (data[0] != WACOM_REPORT_BPAD_TOUCH))
3053                 return 0;
3054
3055         if (data[1] & 0x01)
3056                 wacom_bamboo_pad_pen_event(wacom, &data[1]);
3057
3058         if (data[1] & 0x02)
3059                 return wacom_bamboo_pad_touch_event(wacom, &data[9]);
3060
3061         return 0;
3062 }
3063
3064 static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
3065 {
3066         unsigned char *data = wacom->data;
3067         int connected;
3068
3069         if (len != WACOM_PKGLEN_WIRELESS || data[0] != WACOM_REPORT_WL)
3070                 return 0;
3071
3072         connected = data[1] & 0x01;
3073         if (connected) {
3074                 int pid, battery, charging;
3075
3076                 if ((wacom->shared->type == INTUOSHT ||
3077                     wacom->shared->type == INTUOSHT2) &&
3078                     wacom->shared->touch_input &&
3079                     wacom->shared->touch_max) {
3080                         input_report_switch(wacom->shared->touch_input,
3081                                         SW_MUTE_DEVICE, data[5] & 0x40);
3082                         input_sync(wacom->shared->touch_input);
3083                 }
3084
3085                 pid = get_unaligned_be16(&data[6]);
3086                 battery = (data[5] & 0x3f) * 100 / 31;
3087                 charging = !!(data[5] & 0x80);
3088                 if (wacom->pid != pid) {
3089                         wacom->pid = pid;
3090                         wacom_schedule_work(wacom, WACOM_WORKER_WIRELESS);
3091                 }
3092
3093                 wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
3094                                      battery, charging, 1, 0);
3095
3096         } else if (wacom->pid != 0) {
3097                 /* disconnected while previously connected */
3098                 wacom->pid = 0;
3099                 wacom_schedule_work(wacom, WACOM_WORKER_WIRELESS);
3100                 wacom_notify_battery(wacom, POWER_SUPPLY_STATUS_UNKNOWN, 0, 0, 0, 0);
3101         }
3102
3103         return 0;
3104 }
3105
3106 static int wacom_status_irq(struct wacom_wac *wacom_wac, size_t len)
3107 {
3108         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
3109         struct wacom_features *features = &wacom_wac->features;
3110         unsigned char *data = wacom_wac->data;
3111
3112         if (data[0] != WACOM_REPORT_USB)
3113                 return 0;
3114
3115         if ((features->type == INTUOSHT ||
3116             features->type == INTUOSHT2) &&
3117             wacom_wac->shared->touch_input &&
3118             features->touch_max) {
3119                 input_report_switch(wacom_wac->shared->touch_input,
3120                                     SW_MUTE_DEVICE, data[8] & 0x40);
3121                 input_sync(wacom_wac->shared->touch_input);
3122         }
3123
3124         if (data[9] & 0x02) { /* wireless module is attached */
3125                 int battery = (data[8] & 0x3f) * 100 / 31;
3126                 bool charging = !!(data[8] & 0x80);
3127
3128                 wacom_notify_battery(wacom_wac, WACOM_POWER_SUPPLY_STATUS_AUTO,
3129                                      battery, charging, battery || charging, 1);
3130
3131                 if (!wacom->battery.battery &&
3132                     !(features->quirks & WACOM_QUIRK_BATTERY)) {
3133                         features->quirks |= WACOM_QUIRK_BATTERY;
3134                         wacom_schedule_work(wacom_wac, WACOM_WORKER_BATTERY);
3135                 }
3136         }
3137         else if ((features->quirks & WACOM_QUIRK_BATTERY) &&
3138                  wacom->battery.battery) {
3139                 features->quirks &= ~WACOM_QUIRK_BATTERY;
3140                 wacom_schedule_work(wacom_wac, WACOM_WORKER_BATTERY);
3141                 wacom_notify_battery(wacom_wac, POWER_SUPPLY_STATUS_UNKNOWN, 0, 0, 0, 0);
3142         }
3143         return 0;
3144 }
3145
3146 void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
3147 {
3148         bool sync;
3149
3150         switch (wacom_wac->features.type) {
3151         case PENPARTNER:
3152                 sync = wacom_penpartner_irq(wacom_wac);
3153                 break;
3154
3155         case PL:
3156                 sync = wacom_pl_irq(wacom_wac);
3157                 break;
3158
3159         case WACOM_G4:
3160         case GRAPHIRE:
3161         case GRAPHIRE_BT:
3162         case WACOM_MO:
3163                 sync = wacom_graphire_irq(wacom_wac);
3164                 break;
3165
3166         case PTU:
3167                 sync = wacom_ptu_irq(wacom_wac);
3168                 break;
3169
3170         case DTU:
3171                 sync = wacom_dtu_irq(wacom_wac);
3172                 break;
3173
3174         case DTUS:
3175         case DTUSX:
3176                 sync = wacom_dtus_irq(wacom_wac);
3177                 break;
3178
3179         case INTUOS:
3180         case INTUOS3S:
3181         case INTUOS3:
3182         case INTUOS3L:
3183         case INTUOS4S:
3184         case INTUOS4:
3185         case INTUOS4L:
3186         case CINTIQ:
3187         case WACOM_BEE:
3188         case WACOM_13HD:
3189         case WACOM_21UX2:
3190         case WACOM_22HD:
3191         case WACOM_24HD:
3192         case WACOM_27QHD:
3193         case DTK:
3194         case CINTIQ_HYBRID:
3195         case CINTIQ_COMPANION_2:
3196                 sync = wacom_intuos_irq(wacom_wac);
3197                 break;
3198
3199         case INTUOS4WL:
3200                 sync = wacom_intuos_bt_irq(wacom_wac, len);
3201                 break;
3202
3203         case WACOM_24HDT:
3204         case WACOM_27QHDT:
3205                 sync = wacom_24hdt_irq(wacom_wac);
3206                 break;
3207
3208         case INTUOS5S:
3209         case INTUOS5: