Merge branches 'for-4.16/upstream' and 'for-4.15/upstream-fixes' into for-linus
[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 int wacom_intuos_inout(struct wacom_wac *wacom)
693 {
694         struct wacom_features *features = &wacom->features;
695         unsigned char *data = wacom->data;
696         struct input_dev *input = wacom->pen_input;
697         int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
698
699         if (!(((data[1] & 0xfc) == 0xc0) ||  /* in prox */
700             ((data[1] & 0xfe) == 0x20) ||    /* in range */
701             ((data[1] & 0xfe) == 0x80)))     /* out prox */
702                 return 0;
703
704         /* Enter report */
705         if ((data[1] & 0xfc) == 0xc0) {
706                 /* serial number of the tool */
707                 wacom->serial[idx] = ((data[3] & 0x0f) << 28) +
708                         (data[4] << 20) + (data[5] << 12) +
709                         (data[6] << 4) + (data[7] >> 4);
710
711                 wacom->id[idx] = (data[2] << 4) | (data[3] >> 4) |
712                      ((data[7] & 0x0f) << 16) | ((data[8] & 0xf0) << 8);
713
714                 wacom->tool[idx] = wacom_intuos_get_tool_type(wacom->id[idx]);
715
716                 wacom->shared->stylus_in_proximity = true;
717                 return 1;
718         }
719
720         /* in Range */
721         if ((data[1] & 0xfe) == 0x20) {
722                 if (features->type != INTUOSHT2)
723                         wacom->shared->stylus_in_proximity = true;
724
725                 /* in Range while exiting */
726                 if (wacom->reporting_data) {
727                         input_report_key(input, BTN_TOUCH, 0);
728                         input_report_abs(input, ABS_PRESSURE, 0);
729                         input_report_abs(input, ABS_DISTANCE, wacom->features.distance_max);
730                         return 2;
731                 }
732                 return 1;
733         }
734
735         /* Exit report */
736         if ((data[1] & 0xfe) == 0x80) {
737                 wacom->shared->stylus_in_proximity = false;
738                 wacom->reporting_data = false;
739
740                 /* don't report exit if we don't know the ID */
741                 if (!wacom->id[idx])
742                         return 1;
743
744                 /*
745                  * Reset all states otherwise we lose the initial states
746                  * when in-prox next time
747                  */
748                 input_report_abs(input, ABS_X, 0);
749                 input_report_abs(input, ABS_Y, 0);
750                 input_report_abs(input, ABS_DISTANCE, 0);
751                 input_report_abs(input, ABS_TILT_X, 0);
752                 input_report_abs(input, ABS_TILT_Y, 0);
753                 if (wacom->tool[idx] >= BTN_TOOL_MOUSE) {
754                         input_report_key(input, BTN_LEFT, 0);
755                         input_report_key(input, BTN_MIDDLE, 0);
756                         input_report_key(input, BTN_RIGHT, 0);
757                         input_report_key(input, BTN_SIDE, 0);
758                         input_report_key(input, BTN_EXTRA, 0);
759                         input_report_abs(input, ABS_THROTTLE, 0);
760                         input_report_abs(input, ABS_RZ, 0);
761                 } else {
762                         input_report_abs(input, ABS_PRESSURE, 0);
763                         input_report_key(input, BTN_STYLUS, 0);
764                         input_report_key(input, BTN_STYLUS2, 0);
765                         input_report_key(input, BTN_TOUCH, 0);
766                         input_report_abs(input, ABS_WHEEL, 0);
767                         if (features->type >= INTUOS3S)
768                                 input_report_abs(input, ABS_Z, 0);
769                 }
770                 input_report_key(input, wacom->tool[idx], 0);
771                 input_report_abs(input, ABS_MISC, 0); /* reset tool id */
772                 input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
773                 wacom->id[idx] = 0;
774                 return 2;
775         }
776
777         return 0;
778 }
779
780 static inline bool report_touch_events(struct wacom_wac *wacom)
781 {
782         return (touch_arbitration ? !wacom->shared->stylus_in_proximity : 1);
783 }
784
785 static inline bool delay_pen_events(struct wacom_wac *wacom)
786 {
787         return (wacom->shared->touch_down && touch_arbitration);
788 }
789
790 static int wacom_intuos_general(struct wacom_wac *wacom)
791 {
792         struct wacom_features *features = &wacom->features;
793         unsigned char *data = wacom->data;
794         struct input_dev *input = wacom->pen_input;
795         int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0;
796         unsigned char type = (data[1] >> 1) & 0x0F;
797         unsigned int x, y, distance, t;
798
799         if (data[0] != WACOM_REPORT_PENABLED && data[0] != WACOM_REPORT_CINTIQ &&
800                 data[0] != WACOM_REPORT_INTUOS_PEN)
801                 return 0;
802
803         if (delay_pen_events(wacom))
804                 return 1;
805
806         /* don't report events if we don't know the tool ID */
807         if (!wacom->id[idx]) {
808                 /* but reschedule a read of the current tool */
809                 wacom_intuos_schedule_prox_event(wacom);
810                 return 1;
811         }
812
813         /*
814          * don't report events for invalid data
815          */
816         /* older I4 styli don't work with new Cintiqs */
817         if ((!((wacom->id[idx] >> 16) & 0x01) &&
818                         (features->type == WACOM_21UX2)) ||
819             /* Only large Intuos support Lense Cursor */
820             (wacom->tool[idx] == BTN_TOOL_LENS &&
821                 (features->type == INTUOS3 ||
822                  features->type == INTUOS3S ||
823                  features->type == INTUOS4 ||
824                  features->type == INTUOS4S ||
825                  features->type == INTUOS5 ||
826                  features->type == INTUOS5S ||
827                  features->type == INTUOSPM ||
828                  features->type == INTUOSPS)) ||
829            /* Cintiq doesn't send data when RDY bit isn't set */
830            (features->type == CINTIQ && !(data[1] & 0x40)))
831                 return 1;
832
833         x = (be16_to_cpup((__be16 *)&data[2]) << 1) | ((data[9] >> 1) & 1);
834         y = (be16_to_cpup((__be16 *)&data[4]) << 1) | (data[9] & 1);
835         distance = data[9] >> 2;
836         if (features->type < INTUOS3S) {
837                 x >>= 1;
838                 y >>= 1;
839                 distance >>= 1;
840         }
841         input_report_abs(input, ABS_X, x);
842         input_report_abs(input, ABS_Y, y);
843         input_report_abs(input, ABS_DISTANCE, distance);
844
845         switch (type) {
846         case 0x00:
847         case 0x01:
848         case 0x02:
849         case 0x03:
850                 /* general pen packet */
851                 t = (data[6] << 3) | ((data[7] & 0xC0) >> 5) | (data[1] & 1);
852                 if (features->pressure_max < 2047)
853                         t >>= 1;
854                 input_report_abs(input, ABS_PRESSURE, t);
855                 if (features->type != INTUOSHT2) {
856                     input_report_abs(input, ABS_TILT_X,
857                                  (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
858                     input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
859                 }
860                 input_report_key(input, BTN_STYLUS, data[1] & 2);
861                 input_report_key(input, BTN_STYLUS2, data[1] & 4);
862                 input_report_key(input, BTN_TOUCH, t > 10);
863                 break;
864
865         case 0x0a:
866                 /* airbrush second packet */
867                 input_report_abs(input, ABS_WHEEL,
868                                 (data[6] << 2) | ((data[7] >> 6) & 3));
869                 input_report_abs(input, ABS_TILT_X,
870                                  (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
871                 input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
872                 break;
873
874         case 0x05:
875                 /* Rotation packet */
876                 if (features->type >= INTUOS3S) {
877                         /* I3 marker pen rotation */
878                         t = (data[6] << 3) | ((data[7] >> 5) & 7);
879                         t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
880                                 ((t-1) / 2 + 450)) : (450 - t / 2) ;
881                         input_report_abs(input, ABS_Z, t);
882                 } else {
883                         /* 4D mouse 2nd packet */
884                         t = (data[6] << 3) | ((data[7] >> 5) & 7);
885                         input_report_abs(input, ABS_RZ, (data[7] & 0x20) ?
886                                 ((t - 1) / 2) : -t / 2);
887                 }
888                 break;
889
890         case 0x04:
891                 /* 4D mouse 1st packet */
892                 input_report_key(input, BTN_LEFT,   data[8] & 0x01);
893                 input_report_key(input, BTN_MIDDLE, data[8] & 0x02);
894                 input_report_key(input, BTN_RIGHT,  data[8] & 0x04);
895
896                 input_report_key(input, BTN_SIDE,   data[8] & 0x20);
897                 input_report_key(input, BTN_EXTRA,  data[8] & 0x10);
898                 t = (data[6] << 2) | ((data[7] >> 6) & 3);
899                 input_report_abs(input, ABS_THROTTLE, (data[8] & 0x08) ? -t : t);
900                 break;
901
902         case 0x06:
903                 /* I4 mouse */
904                 input_report_key(input, BTN_LEFT,   data[6] & 0x01);
905                 input_report_key(input, BTN_MIDDLE, data[6] & 0x02);
906                 input_report_key(input, BTN_RIGHT,  data[6] & 0x04);
907                 input_report_rel(input, REL_WHEEL, ((data[7] & 0x80) >> 7)
908                                  - ((data[7] & 0x40) >> 6));
909                 input_report_key(input, BTN_SIDE,   data[6] & 0x08);
910                 input_report_key(input, BTN_EXTRA,  data[6] & 0x10);
911
912                 input_report_abs(input, ABS_TILT_X,
913                         (((data[7] << 1) & 0x7e) | (data[8] >> 7)) - 64);
914                 input_report_abs(input, ABS_TILT_Y, (data[8] & 0x7f) - 64);
915                 break;
916
917         case 0x08:
918                 if (wacom->tool[idx] == BTN_TOOL_MOUSE) {
919                         /* 2D mouse packet */
920                         input_report_key(input, BTN_LEFT,   data[8] & 0x04);
921                         input_report_key(input, BTN_MIDDLE, data[8] & 0x08);
922                         input_report_key(input, BTN_RIGHT,  data[8] & 0x10);
923                         input_report_rel(input, REL_WHEEL, (data[8] & 0x01)
924                                          - ((data[8] & 0x02) >> 1));
925
926                         /* I3 2D mouse side buttons */
927                         if (features->type >= INTUOS3S && features->type <= INTUOS3L) {
928                                 input_report_key(input, BTN_SIDE,   data[8] & 0x40);
929                                 input_report_key(input, BTN_EXTRA,  data[8] & 0x20);
930                         }
931                 }
932                 else if (wacom->tool[idx] == BTN_TOOL_LENS) {
933                         /* Lens cursor packets */
934                         input_report_key(input, BTN_LEFT,   data[8] & 0x01);
935                         input_report_key(input, BTN_MIDDLE, data[8] & 0x02);
936                         input_report_key(input, BTN_RIGHT,  data[8] & 0x04);
937                         input_report_key(input, BTN_SIDE,   data[8] & 0x10);
938                         input_report_key(input, BTN_EXTRA,  data[8] & 0x08);
939                 }
940                 break;
941
942         case 0x07:
943         case 0x09:
944         case 0x0b:
945         case 0x0c:
946         case 0x0d:
947         case 0x0e:
948         case 0x0f:
949                 /* unhandled */
950                 break;
951         }
952
953         input_report_abs(input, ABS_MISC,
954                          wacom_intuos_id_mangle(wacom->id[idx])); /* report tool id */
955         input_report_key(input, wacom->tool[idx], 1);
956         input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
957         wacom->reporting_data = true;
958         return 2;
959 }
960
961 static int wacom_intuos_irq(struct wacom_wac *wacom)
962 {
963         unsigned char *data = wacom->data;
964         struct input_dev *input = wacom->pen_input;
965         int result;
966
967         if (data[0] != WACOM_REPORT_PENABLED &&
968             data[0] != WACOM_REPORT_INTUOS_ID1 &&
969             data[0] != WACOM_REPORT_INTUOS_ID2 &&
970             data[0] != WACOM_REPORT_INTUOSPAD &&
971             data[0] != WACOM_REPORT_INTUOS_PEN &&
972             data[0] != WACOM_REPORT_CINTIQ &&
973             data[0] != WACOM_REPORT_CINTIQPAD &&
974             data[0] != WACOM_REPORT_INTUOS5PAD) {
975                 dev_dbg(input->dev.parent,
976                         "%s: received unknown report #%d\n", __func__, data[0]);
977                 return 0;
978         }
979
980         /* process pad events */
981         result = wacom_intuos_pad(wacom);
982         if (result)
983                 return result;
984
985         /* process in/out prox events */
986         result = wacom_intuos_inout(wacom);
987         if (result)
988                 return result - 1;
989
990         /* process general packets */
991         result = wacom_intuos_general(wacom);
992         if (result)
993                 return result - 1;
994
995         return 0;
996 }
997
998 static int wacom_remote_irq(struct wacom_wac *wacom_wac, size_t len)
999 {
1000         unsigned char *data = wacom_wac->data;
1001         struct input_dev *input;
1002         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
1003         struct wacom_remote *remote = wacom->remote;
1004         int bat_charging, bat_percent, touch_ring_mode;
1005         __u32 serial;
1006         int i, index = -1;
1007         unsigned long flags;
1008
1009         if (data[0] != WACOM_REPORT_REMOTE) {
1010                 hid_dbg(wacom->hdev, "%s: received unknown report #%d",
1011                         __func__, data[0]);
1012                 return 0;
1013         }
1014
1015         serial = data[3] + (data[4] << 8) + (data[5] << 16);
1016         wacom_wac->id[0] = PAD_DEVICE_ID;
1017
1018         spin_lock_irqsave(&remote->remote_lock, flags);
1019
1020         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1021                 if (remote->remotes[i].serial == serial) {
1022                         index = i;
1023                         break;
1024                 }
1025         }
1026
1027         if (index < 0 || !remote->remotes[index].registered)
1028                 goto out;
1029
1030         input = remote->remotes[index].input;
1031
1032         input_report_key(input, BTN_0, (data[9] & 0x01));
1033         input_report_key(input, BTN_1, (data[9] & 0x02));
1034         input_report_key(input, BTN_2, (data[9] & 0x04));
1035         input_report_key(input, BTN_3, (data[9] & 0x08));
1036         input_report_key(input, BTN_4, (data[9] & 0x10));
1037         input_report_key(input, BTN_5, (data[9] & 0x20));
1038         input_report_key(input, BTN_6, (data[9] & 0x40));
1039         input_report_key(input, BTN_7, (data[9] & 0x80));
1040
1041         input_report_key(input, BTN_8, (data[10] & 0x01));
1042         input_report_key(input, BTN_9, (data[10] & 0x02));
1043         input_report_key(input, BTN_A, (data[10] & 0x04));
1044         input_report_key(input, BTN_B, (data[10] & 0x08));
1045         input_report_key(input, BTN_C, (data[10] & 0x10));
1046         input_report_key(input, BTN_X, (data[10] & 0x20));
1047         input_report_key(input, BTN_Y, (data[10] & 0x40));
1048         input_report_key(input, BTN_Z, (data[10] & 0x80));
1049
1050         input_report_key(input, BTN_BASE, (data[11] & 0x01));
1051         input_report_key(input, BTN_BASE2, (data[11] & 0x02));
1052
1053         if (data[12] & 0x80)
1054                 input_report_abs(input, ABS_WHEEL, (data[12] & 0x7f));
1055         else
1056                 input_report_abs(input, ABS_WHEEL, 0);
1057
1058         bat_percent = data[7] & 0x7f;
1059         bat_charging = !!(data[7] & 0x80);
1060
1061         if (data[9] | data[10] | (data[11] & 0x03) | data[12])
1062                 input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
1063         else
1064                 input_report_abs(input, ABS_MISC, 0);
1065
1066         input_event(input, EV_MSC, MSC_SERIAL, serial);
1067
1068         input_sync(input);
1069
1070         /*Which mode select (LED light) is currently on?*/
1071         touch_ring_mode = (data[11] & 0xC0) >> 6;
1072
1073         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1074                 if (remote->remotes[i].serial == serial)
1075                         wacom->led.groups[i].select = touch_ring_mode;
1076         }
1077
1078         __wacom_notify_battery(&remote->remotes[index].battery,
1079                                 WACOM_POWER_SUPPLY_STATUS_AUTO, bat_percent,
1080                                 bat_charging, 1, bat_charging);
1081
1082 out:
1083         spin_unlock_irqrestore(&remote->remote_lock, flags);
1084         return 0;
1085 }
1086
1087 static void wacom_remote_status_irq(struct wacom_wac *wacom_wac, size_t len)
1088 {
1089         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
1090         unsigned char *data = wacom_wac->data;
1091         struct wacom_remote *remote = wacom->remote;
1092         struct wacom_remote_data remote_data;
1093         unsigned long flags;
1094         int i, ret;
1095
1096         if (data[0] != WACOM_REPORT_DEVICE_LIST)
1097                 return;
1098
1099         memset(&remote_data, 0, sizeof(struct wacom_remote_data));
1100
1101         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1102                 int j = i * 6;
1103                 int serial = (data[j+6] << 16) + (data[j+5] << 8) + data[j+4];
1104                 bool connected = data[j+2];
1105
1106                 remote_data.remote[i].serial = serial;
1107                 remote_data.remote[i].connected = connected;
1108         }
1109
1110         spin_lock_irqsave(&remote->remote_lock, flags);
1111
1112         ret = kfifo_in(&remote->remote_fifo, &remote_data, sizeof(remote_data));
1113         if (ret != sizeof(remote_data)) {
1114                 spin_unlock_irqrestore(&remote->remote_lock, flags);
1115                 hid_err(wacom->hdev, "Can't queue Remote status event.\n");
1116                 return;
1117         }
1118
1119         spin_unlock_irqrestore(&remote->remote_lock, flags);
1120
1121         wacom_schedule_work(wacom_wac, WACOM_WORKER_REMOTE);
1122 }
1123
1124 static int int_dist(int x1, int y1, int x2, int y2)
1125 {
1126         int x = x2 - x1;
1127         int y = y2 - y1;
1128
1129         return int_sqrt(x*x + y*y);
1130 }
1131
1132 static void wacom_intuos_bt_process_data(struct wacom_wac *wacom,
1133                 unsigned char *data)
1134 {
1135         memcpy(wacom->data, data, 10);
1136         wacom_intuos_irq(wacom);
1137
1138         input_sync(wacom->pen_input);
1139         if (wacom->pad_input)
1140                 input_sync(wacom->pad_input);
1141 }
1142
1143 static int wacom_intuos_bt_irq(struct wacom_wac *wacom, size_t len)
1144 {
1145         unsigned char data[WACOM_PKGLEN_MAX];
1146         int i = 1;
1147         unsigned power_raw, battery_capacity, bat_charging, ps_connected;
1148
1149         memcpy(data, wacom->data, len);
1150
1151         switch (data[0]) {
1152         case 0x04:
1153                 wacom_intuos_bt_process_data(wacom, data + i);
1154                 i += 10;
1155                 /* fall through */
1156         case 0x03:
1157                 wacom_intuos_bt_process_data(wacom, data + i);
1158                 i += 10;
1159                 wacom_intuos_bt_process_data(wacom, data + i);
1160                 i += 10;
1161                 power_raw = data[i];
1162                 bat_charging = (power_raw & 0x08) ? 1 : 0;
1163                 ps_connected = (power_raw & 0x10) ? 1 : 0;
1164                 battery_capacity = batcap_i4[power_raw & 0x07];
1165                 wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
1166                                      battery_capacity, bat_charging,
1167                                      battery_capacity || bat_charging,
1168                                      ps_connected);
1169                 break;
1170         default:
1171                 dev_dbg(wacom->pen_input->dev.parent,
1172                                 "Unknown report: %d,%d size:%zu\n",
1173                                 data[0], data[1], len);
1174                 return 0;
1175         }
1176         return 0;
1177 }
1178
1179 static int wacom_wac_finger_count_touches(struct wacom_wac *wacom)
1180 {
1181         struct input_dev *input = wacom->touch_input;
1182         unsigned touch_max = wacom->features.touch_max;
1183         int count = 0;
1184         int i;
1185
1186         if (!touch_max)
1187                 return 0;
1188
1189         if (touch_max == 1)
1190                 return test_bit(BTN_TOUCH, input->key) &&
1191                         report_touch_events(wacom);
1192
1193         for (i = 0; i < input->mt->num_slots; i++) {
1194                 struct input_mt_slot *ps = &input->mt->slots[i];
1195                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
1196                 if (id >= 0)
1197                         count++;
1198         }
1199
1200         return count;
1201 }
1202
1203 static void wacom_intuos_pro2_bt_pen(struct wacom_wac *wacom)
1204 {
1205         const int pen_frame_len = 14;
1206         const int pen_frames = 7;
1207
1208         struct input_dev *pen_input = wacom->pen_input;
1209         unsigned char *data = wacom->data;
1210         int i;
1211
1212         wacom->serial[0] = get_unaligned_le64(&data[99]);
1213         wacom->id[0]     = get_unaligned_le16(&data[107]);
1214         if (wacom->serial[0] >> 52 == 1) {
1215                 /* Add back in missing bits of ID for non-USI pens */
1216                 wacom->id[0] |= (wacom->serial[0] >> 32) & 0xFFFFF;
1217         }
1218         wacom->tool[0]   = wacom_intuos_get_tool_type(wacom_intuos_id_mangle(wacom->id[0]));
1219
1220         for (i = 0; i < pen_frames; i++) {
1221                 unsigned char *frame = &data[i*pen_frame_len + 1];
1222                 bool valid = frame[0] & 0x80;
1223                 bool prox = frame[0] & 0x40;
1224                 bool range = frame[0] & 0x20;
1225
1226                 if (!valid)
1227                         continue;
1228
1229                 if (range) {
1230                         /* Fix rotation alignment: userspace expects zero at left */
1231                         int16_t rotation = (int16_t)get_unaligned_le16(&frame[9]);
1232                         rotation += 1800/4;
1233                         if (rotation > 899)
1234                                 rotation -= 1800;
1235
1236                         input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1]));
1237                         input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3]));
1238                         input_report_abs(pen_input, ABS_TILT_X, (char)frame[7]);
1239                         input_report_abs(pen_input, ABS_TILT_Y, (char)frame[8]);
1240                         input_report_abs(pen_input, ABS_Z, rotation);
1241                         input_report_abs(pen_input, ABS_WHEEL, get_unaligned_le16(&frame[11]));
1242                 }
1243                 input_report_abs(pen_input, ABS_PRESSURE, get_unaligned_le16(&frame[5]));
1244                 input_report_abs(pen_input, ABS_DISTANCE, range ? frame[13] : wacom->features.distance_max);
1245
1246                 input_report_key(pen_input, BTN_TOUCH, frame[0] & 0x01);
1247                 input_report_key(pen_input, BTN_STYLUS, frame[0] & 0x02);
1248                 input_report_key(pen_input, BTN_STYLUS2, frame[0] & 0x04);
1249
1250                 input_report_key(pen_input, wacom->tool[0], prox);
1251                 input_event(pen_input, EV_MSC, MSC_SERIAL, wacom->serial[0]);
1252                 input_report_abs(pen_input, ABS_MISC,
1253                                  wacom_intuos_id_mangle(wacom->id[0])); /* report tool id */
1254
1255                 wacom->shared->stylus_in_proximity = prox;
1256
1257                 input_sync(pen_input);
1258         }
1259 }
1260
1261 static void wacom_intuos_pro2_bt_touch(struct wacom_wac *wacom)
1262 {
1263         const int finger_touch_len = 8;
1264         const int finger_frames = 4;
1265         const int finger_frame_len = 43;
1266
1267         struct input_dev *touch_input = wacom->touch_input;
1268         unsigned char *data = wacom->data;
1269         int num_contacts_left = 5;
1270         int i, j;
1271
1272         for (i = 0; i < finger_frames; i++) {
1273                 unsigned char *frame = &data[i*finger_frame_len + 109];
1274                 int current_num_contacts = frame[0] & 0x7F;
1275                 int contacts_to_send;
1276
1277                 if (!(frame[0] & 0x80))
1278                         continue;
1279
1280                 /*
1281                  * First packet resets the counter since only the first
1282                  * packet in series will have non-zero current_num_contacts.
1283                  */
1284                 if (current_num_contacts)
1285                         wacom->num_contacts_left = current_num_contacts;
1286
1287                 contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);
1288
1289                 for (j = 0; j < contacts_to_send; j++) {
1290                         unsigned char *touch = &frame[j*finger_touch_len + 1];
1291                         int slot = input_mt_get_slot_by_key(touch_input, touch[0]);
1292                         int x = get_unaligned_le16(&touch[2]);
1293                         int y = get_unaligned_le16(&touch[4]);
1294                         int w = touch[6] * input_abs_get_res(touch_input, ABS_MT_POSITION_X);
1295                         int h = touch[7] * input_abs_get_res(touch_input, ABS_MT_POSITION_Y);
1296
1297                         if (slot < 0)
1298                                 continue;
1299
1300                         input_mt_slot(touch_input, slot);
1301                         input_mt_report_slot_state(touch_input, MT_TOOL_FINGER, touch[1] & 0x01);
1302                         input_report_abs(touch_input, ABS_MT_POSITION_X, x);
1303                         input_report_abs(touch_input, ABS_MT_POSITION_Y, y);
1304                         input_report_abs(touch_input, ABS_MT_TOUCH_MAJOR, max(w, h));
1305                         input_report_abs(touch_input, ABS_MT_TOUCH_MINOR, min(w, h));
1306                         input_report_abs(touch_input, ABS_MT_ORIENTATION, w > h);
1307                 }
1308
1309                 input_mt_sync_frame(touch_input);
1310
1311                 wacom->num_contacts_left -= contacts_to_send;
1312                 if (wacom->num_contacts_left <= 0) {
1313                         wacom->num_contacts_left = 0;
1314                         wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1315                 }
1316         }
1317
1318         input_report_switch(touch_input, SW_MUTE_DEVICE, !(data[281] >> 7));
1319         input_sync(touch_input);
1320 }
1321
1322 static void wacom_intuos_pro2_bt_pad(struct wacom_wac *wacom)
1323 {
1324         struct input_dev *pad_input = wacom->pad_input;
1325         unsigned char *data = wacom->data;
1326
1327         int buttons = (data[282] << 1) | ((data[281] >> 6) & 0x01);
1328         int ring = data[285] & 0x7F;
1329         bool ringstatus = data[285] & 0x80;
1330         bool prox = buttons || ringstatus;
1331
1332         /* Fix touchring data: userspace expects 0 at left and increasing clockwise */
1333         ring = 71 - ring;
1334         ring += 3*72/16;
1335         if (ring > 71)
1336                 ring -= 72;
1337
1338         wacom_report_numbered_buttons(pad_input, 9, buttons);
1339
1340         input_report_abs(pad_input, ABS_WHEEL, ringstatus ? ring : 0);
1341
1342         input_report_key(pad_input, wacom->tool[1], prox ? 1 : 0);
1343         input_report_abs(pad_input, ABS_MISC, prox ? PAD_DEVICE_ID : 0);
1344         input_event(pad_input, EV_MSC, MSC_SERIAL, 0xffffffff);
1345
1346         input_sync(pad_input);
1347 }
1348
1349 static void wacom_intuos_pro2_bt_battery(struct wacom_wac *wacom)
1350 {
1351         unsigned char *data = wacom->data;
1352
1353         bool chg = data[284] & 0x80;
1354         int battery_status = data[284] & 0x7F;
1355
1356         wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
1357                              battery_status, chg, 1, chg);
1358 }
1359
1360 static int wacom_intuos_pro2_bt_irq(struct wacom_wac *wacom, size_t len)
1361 {
1362         unsigned char *data = wacom->data;
1363
1364         if (data[0] != 0x80) {
1365                 dev_dbg(wacom->pen_input->dev.parent,
1366                         "%s: received unknown report #%d\n", __func__, data[0]);
1367                 return 0;
1368         }
1369
1370         wacom_intuos_pro2_bt_pen(wacom);
1371         wacom_intuos_pro2_bt_touch(wacom);
1372         wacom_intuos_pro2_bt_pad(wacom);
1373         wacom_intuos_pro2_bt_battery(wacom);
1374         return 0;
1375 }
1376
1377 static int wacom_24hdt_irq(struct wacom_wac *wacom)
1378 {
1379         struct input_dev *input = wacom->touch_input;
1380         unsigned char *data = wacom->data;
1381         int i;
1382         int current_num_contacts = data[61];
1383         int contacts_to_send = 0;
1384         int num_contacts_left = 4; /* maximum contacts per packet */
1385         int byte_per_packet = WACOM_BYTES_PER_24HDT_PACKET;
1386         int y_offset = 2;
1387
1388         if (wacom->features.type == WACOM_27QHDT) {
1389                 current_num_contacts = data[63];
1390                 num_contacts_left = 10;
1391                 byte_per_packet = WACOM_BYTES_PER_QHDTHID_PACKET;
1392                 y_offset = 0;
1393         }
1394
1395         /*
1396          * First packet resets the counter since only the first
1397          * packet in series will have non-zero current_num_contacts.
1398          */
1399         if (current_num_contacts)
1400                 wacom->num_contacts_left = current_num_contacts;
1401
1402         contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);
1403
1404         for (i = 0; i < contacts_to_send; i++) {
1405                 int offset = (byte_per_packet * i) + 1;
1406                 bool touch = (data[offset] & 0x1) && report_touch_events(wacom);
1407                 int slot = input_mt_get_slot_by_key(input, data[offset + 1]);
1408
1409                 if (slot < 0)
1410                         continue;
1411                 input_mt_slot(input, slot);
1412                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
1413
1414                 if (touch) {
1415                         int t_x = get_unaligned_le16(&data[offset + 2]);
1416                         int t_y = get_unaligned_le16(&data[offset + 4 + y_offset]);
1417
1418                         input_report_abs(input, ABS_MT_POSITION_X, t_x);
1419                         input_report_abs(input, ABS_MT_POSITION_Y, t_y);
1420
1421                         if (wacom->features.type != WACOM_27QHDT) {
1422                                 int c_x = get_unaligned_le16(&data[offset + 4]);
1423                                 int c_y = get_unaligned_le16(&data[offset + 8]);
1424                                 int w = get_unaligned_le16(&data[offset + 10]);
1425                                 int h = get_unaligned_le16(&data[offset + 12]);
1426
1427                                 input_report_abs(input, ABS_MT_TOUCH_MAJOR, min(w,h));
1428                                 input_report_abs(input, ABS_MT_WIDTH_MAJOR,
1429                                                  min(w, h) + int_dist(t_x, t_y, c_x, c_y));
1430                                 input_report_abs(input, ABS_MT_WIDTH_MINOR, min(w, h));
1431                                 input_report_abs(input, ABS_MT_ORIENTATION, w > h);
1432                         }
1433                 }
1434         }
1435         input_mt_sync_frame(input);
1436
1437         wacom->num_contacts_left -= contacts_to_send;
1438         if (wacom->num_contacts_left <= 0) {
1439                 wacom->num_contacts_left = 0;
1440                 wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1441         }
1442         return 1;
1443 }
1444
1445 static int wacom_mt_touch(struct wacom_wac *wacom)
1446 {
1447         struct input_dev *input = wacom->touch_input;
1448         unsigned char *data = wacom->data;
1449         int i;
1450         int current_num_contacts = data[2];
1451         int contacts_to_send = 0;
1452         int x_offset = 0;
1453
1454         /* MTTPC does not support Height and Width */
1455         if (wacom->features.type == MTTPC || wacom->features.type == MTTPC_B)
1456                 x_offset = -4;
1457
1458         /*
1459          * First packet resets the counter since only the first
1460          * packet in series will have non-zero current_num_contacts.
1461          */
1462         if (current_num_contacts)
1463                 wacom->num_contacts_left = current_num_contacts;
1464
1465         /* There are at most 5 contacts per packet */
1466         contacts_to_send = min(5, wacom->num_contacts_left);
1467
1468         for (i = 0; i < contacts_to_send; i++) {
1469                 int offset = (WACOM_BYTES_PER_MT_PACKET + x_offset) * i + 3;
1470                 bool touch = (data[offset] & 0x1) && report_touch_events(wacom);
1471                 int id = get_unaligned_le16(&data[offset + 1]);
1472                 int slot = input_mt_get_slot_by_key(input, id);
1473
1474                 if (slot < 0)
1475                         continue;
1476
1477                 input_mt_slot(input, slot);
1478                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
1479                 if (touch) {
1480                         int x = get_unaligned_le16(&data[offset + x_offset + 7]);
1481                         int y = get_unaligned_le16(&data[offset + x_offset + 9]);
1482                         input_report_abs(input, ABS_MT_POSITION_X, x);
1483                         input_report_abs(input, ABS_MT_POSITION_Y, y);
1484                 }
1485         }
1486         input_mt_sync_frame(input);
1487
1488         wacom->num_contacts_left -= contacts_to_send;
1489         if (wacom->num_contacts_left <= 0) {
1490                 wacom->num_contacts_left = 0;
1491                 wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1492         }
1493         return 1;
1494 }
1495
1496 static int wacom_tpc_mt_touch(struct wacom_wac *wacom)
1497 {
1498         struct input_dev *input = wacom->touch_input;
1499         unsigned char *data = wacom->data;
1500         int i;
1501
1502         for (i = 0; i < 2; i++) {
1503                 int p = data[1] & (1 << i);
1504                 bool touch = p && report_touch_events(wacom);
1505
1506                 input_mt_slot(input, i);
1507                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
1508                 if (touch) {
1509                         int x = le16_to_cpup((__le16 *)&data[i * 2 + 2]) & 0x7fff;
1510                         int y = le16_to_cpup((__le16 *)&data[i * 2 + 6]) & 0x7fff;
1511
1512                         input_report_abs(input, ABS_MT_POSITION_X, x);
1513                         input_report_abs(input, ABS_MT_POSITION_Y, y);
1514                 }
1515         }
1516         input_mt_sync_frame(input);
1517
1518         /* keep touch state for pen event */
1519         wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
1520
1521         return 1;
1522 }
1523
1524 static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len)
1525 {
1526         unsigned char *data = wacom->data;
1527         struct input_dev *input = wacom->touch_input;
1528         bool prox = report_touch_events(wacom);
1529         int x = 0, y = 0;
1530
1531         if (wacom->features.touch_max > 1 || len > WACOM_PKGLEN_TPC2FG)
1532                 return 0;
1533
1534         if (len == WACOM_PKGLEN_TPC1FG) {
1535                 prox = prox && (data[0] & 0x01);
1536                 x = get_unaligned_le16(&data[1]);
1537                 y = get_unaligned_le16(&data[3]);
1538         } else if (len == WACOM_PKGLEN_TPC1FG_B) {
1539                 prox = prox && (data[2] & 0x01);
1540                 x = get_unaligned_le16(&data[3]);
1541                 y = get_unaligned_le16(&data[5]);
1542         } else {
1543                 prox = prox && (data[1] & 0x01);
1544                 x = le16_to_cpup((__le16 *)&data[2]);
1545                 y = le16_to_cpup((__le16 *)&data[4]);
1546         }
1547
1548         if (prox) {
1549                 input_report_abs(input, ABS_X, x);
1550                 input_report_abs(input, ABS_Y, y);
1551         }
1552         input_report_key(input, BTN_TOUCH, prox);
1553
1554         /* keep touch state for pen events */
1555         wacom->shared->touch_down = prox;
1556
1557         return 1;
1558 }
1559
1560 static int wacom_tpc_pen(struct wacom_wac *wacom)
1561 {
1562         unsigned char *data = wacom->data;
1563         struct input_dev *input = wacom->pen_input;
1564         bool prox = data[1] & 0x20;
1565
1566         if (!wacom->shared->stylus_in_proximity) /* first in prox */
1567                 /* Going into proximity select tool */
1568                 wacom->tool[0] = (data[1] & 0x0c) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
1569
1570         /* keep pen state for touch events */
1571         wacom->shared->stylus_in_proximity = prox;
1572
1573         /* send pen events only when touch is up or forced out
1574          * or touch arbitration is off
1575          */
1576         if (!delay_pen_events(wacom)) {
1577                 input_report_key(input, BTN_STYLUS, data[1] & 0x02);
1578                 input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
1579                 input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
1580                 input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
1581                 input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x07) << 8) | data[6]);
1582                 input_report_key(input, BTN_TOUCH, data[1] & 0x05);
1583                 input_report_key(input, wacom->tool[0], prox);
1584                 return 1;
1585         }
1586
1587         return 0;
1588 }
1589
1590 static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
1591 {
1592         unsigned char *data = wacom->data;
1593
1594         if (wacom->pen_input) {
1595                 dev_dbg(wacom->pen_input->dev.parent,
1596                         "%s: received report #%d\n", __func__, data[0]);
1597
1598                 if (len == WACOM_PKGLEN_PENABLED ||
1599                     data[0] == WACOM_REPORT_PENABLED)
1600                         return wacom_tpc_pen(wacom);
1601         }
1602         else if (wacom->touch_input) {
1603                 dev_dbg(wacom->touch_input->dev.parent,
1604                         "%s: received report #%d\n", __func__, data[0]);
1605
1606                 switch (len) {
1607                 case WACOM_PKGLEN_TPC1FG:
1608                         return wacom_tpc_single_touch(wacom, len);
1609
1610                 case WACOM_PKGLEN_TPC2FG:
1611                         return wacom_tpc_mt_touch(wacom);
1612
1613                 default:
1614                         switch (data[0]) {
1615                         case WACOM_REPORT_TPC1FG:
1616                         case WACOM_REPORT_TPCHID:
1617                         case WACOM_REPORT_TPCST:
1618                         case WACOM_REPORT_TPC1FGE:
1619                                 return wacom_tpc_single_touch(wacom, len);
1620
1621                         case WACOM_REPORT_TPCMT:
1622                         case WACOM_REPORT_TPCMT2:
1623                                 return wacom_mt_touch(wacom);
1624
1625                         }
1626                 }
1627         }
1628
1629         return 0;
1630 }
1631
1632 static int wacom_offset_rotation(struct input_dev *input, struct hid_usage *usage,
1633                                  int value, int num, int denom)
1634 {
1635         struct input_absinfo *abs = &input->absinfo[usage->code];
1636         int range = (abs->maximum - abs->minimum + 1);
1637
1638         value += num*range/denom;
1639         if (value > abs->maximum)
1640                 value -= range;
1641         else if (value < abs->minimum)
1642                 value += range;
1643         return value;
1644 }
1645
1646 int wacom_equivalent_usage(int usage)
1647 {
1648         if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMDIGITIZER) {
1649                 int subpage = (usage & 0xFF00) << 8;
1650                 int subusage = (usage & 0xFF);
1651
1652                 if (subpage == WACOM_HID_SP_PAD ||
1653                     subpage == WACOM_HID_SP_BUTTON ||
1654                     subpage == WACOM_HID_SP_DIGITIZER ||
1655                     subpage == WACOM_HID_SP_DIGITIZERINFO ||
1656                     usage == WACOM_HID_WD_SENSE ||
1657                     usage == WACOM_HID_WD_SERIALHI ||
1658                     usage == WACOM_HID_WD_TOOLTYPE ||
1659                     usage == WACOM_HID_WD_DISTANCE ||
1660                     usage == WACOM_HID_WD_TOUCHSTRIP ||
1661                     usage == WACOM_HID_WD_TOUCHSTRIP2 ||
1662                     usage == WACOM_HID_WD_TOUCHRING ||
1663                     usage == WACOM_HID_WD_TOUCHRINGSTATUS) {
1664                         return usage;
1665                 }
1666
1667                 if (subpage == HID_UP_UNDEFINED)
1668                         subpage = HID_UP_DIGITIZER;
1669
1670                 return subpage | subusage;
1671         }
1672
1673         if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMTOUCH) {
1674                 int subpage = (usage & 0xFF00) << 8;
1675                 int subusage = (usage & 0xFF);
1676
1677                 if (subpage == HID_UP_UNDEFINED)
1678                         subpage = WACOM_HID_SP_DIGITIZER;
1679
1680                 return subpage | subusage;
1681         }
1682
1683         return usage;
1684 }
1685
1686 static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage,
1687                 struct hid_field *field, __u8 type, __u16 code, int fuzz)
1688 {
1689         struct wacom *wacom = input_get_drvdata(input);
1690         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1691         struct wacom_features *features = &wacom_wac->features;
1692         int fmin = field->logical_minimum;
1693         int fmax = field->logical_maximum;
1694         unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
1695         int resolution_code = code;
1696
1697         if (equivalent_usage == HID_DG_TWIST) {
1698                 resolution_code = ABS_RZ;
1699         }
1700
1701         if (equivalent_usage == HID_GD_X) {
1702                 fmin += features->offset_left;
1703                 fmax -= features->offset_right;
1704         }
1705         if (equivalent_usage == HID_GD_Y) {
1706                 fmin += features->offset_top;
1707                 fmax -= features->offset_bottom;
1708         }
1709
1710         usage->type = type;
1711         usage->code = code;
1712
1713         set_bit(type, input->evbit);
1714
1715         switch (type) {
1716         case EV_ABS:
1717                 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
1718                 input_abs_set_res(input, code,
1719                                   hidinput_calc_abs_res(field, resolution_code));
1720                 break;
1721         case EV_KEY:
1722                 input_set_capability(input, EV_KEY, code);
1723                 break;
1724         case EV_MSC:
1725                 input_set_capability(input, EV_MSC, code);
1726                 break;
1727         case EV_SW:
1728                 input_set_capability(input, EV_SW, code);
1729                 break;
1730         }
1731 }
1732
1733 static void wacom_wac_battery_usage_mapping(struct hid_device *hdev,
1734                 struct hid_field *field, struct hid_usage *usage)
1735 {
1736         struct wacom *wacom = hid_get_drvdata(hdev);
1737         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1738         struct wacom_features *features = &wacom_wac->features;
1739         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1740
1741         switch (equivalent_usage) {
1742         case HID_DG_BATTERYSTRENGTH:
1743         case WACOM_HID_WD_BATTERY_LEVEL:
1744         case WACOM_HID_WD_BATTERY_CHARGING:
1745                 features->quirks |= WACOM_QUIRK_BATTERY;
1746                 break;
1747         }
1748 }
1749
1750 static void wacom_wac_battery_event(struct hid_device *hdev, struct hid_field *field,
1751                 struct hid_usage *usage, __s32 value)
1752 {
1753         struct wacom *wacom = hid_get_drvdata(hdev);
1754         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1755         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1756
1757         switch (equivalent_usage) {
1758         case HID_DG_BATTERYSTRENGTH:
1759                 if (value == 0) {
1760                         wacom_wac->hid_data.bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
1761                 }
1762                 else {
1763                         value = value * 100 / (field->logical_maximum - field->logical_minimum);
1764                         wacom_wac->hid_data.battery_capacity = value;
1765                         wacom_wac->hid_data.bat_connected = 1;
1766                         wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
1767                 }
1768                 break;
1769         case WACOM_HID_WD_BATTERY_LEVEL:
1770                 value = value * 100 / (field->logical_maximum - field->logical_minimum);
1771                 wacom_wac->hid_data.battery_capacity = value;
1772                 wacom_wac->hid_data.bat_connected = 1;
1773                 wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
1774                 break;
1775         case WACOM_HID_WD_BATTERY_CHARGING:
1776                 wacom_wac->hid_data.bat_charging = value;
1777                 wacom_wac->hid_data.ps_connected = value;
1778                 wacom_wac->hid_data.bat_connected = 1;
1779                 wacom_wac->hid_data.bat_status = WACOM_POWER_SUPPLY_STATUS_AUTO;
1780                 break;
1781         }
1782 }
1783
1784 static void wacom_wac_battery_pre_report(struct hid_device *hdev,
1785                 struct hid_report *report)
1786 {
1787         return;
1788 }
1789
1790 static void wacom_wac_battery_report(struct hid_device *hdev,
1791                 struct hid_report *report)
1792 {
1793         struct wacom *wacom = hid_get_drvdata(hdev);
1794         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1795         struct wacom_features *features = &wacom_wac->features;
1796
1797         if (features->quirks & WACOM_QUIRK_BATTERY) {
1798                 int status = wacom_wac->hid_data.bat_status;
1799                 int capacity = wacom_wac->hid_data.battery_capacity;
1800                 bool charging = wacom_wac->hid_data.bat_charging;
1801                 bool connected = wacom_wac->hid_data.bat_connected;
1802                 bool powered = wacom_wac->hid_data.ps_connected;
1803
1804                 wacom_notify_battery(wacom_wac, status, capacity, charging,
1805                                      connected, powered);
1806         }
1807 }
1808
1809 static void wacom_wac_pad_usage_mapping(struct hid_device *hdev,
1810                 struct hid_field *field, struct hid_usage *usage)
1811 {
1812         struct wacom *wacom = hid_get_drvdata(hdev);
1813         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1814         struct wacom_features *features = &wacom_wac->features;
1815         struct input_dev *input = wacom_wac->pad_input;
1816         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1817
1818         switch (equivalent_usage) {
1819         case WACOM_HID_WD_ACCELEROMETER_X:
1820                 __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
1821                 wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 0);
1822                 features->device_type |= WACOM_DEVICETYPE_PAD;
1823                 break;
1824         case WACOM_HID_WD_ACCELEROMETER_Y:
1825                 __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
1826                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 0);
1827                 features->device_type |= WACOM_DEVICETYPE_PAD;
1828                 break;
1829         case WACOM_HID_WD_ACCELEROMETER_Z:
1830                 __set_bit(INPUT_PROP_ACCELEROMETER, input->propbit);
1831                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
1832                 features->device_type |= WACOM_DEVICETYPE_PAD;
1833                 break;
1834         case WACOM_HID_WD_BUTTONCENTER:
1835                 wacom->generic_has_leds = true;
1836                 /* fall through */
1837         case WACOM_HID_WD_BUTTONHOME:
1838         case WACOM_HID_WD_BUTTONUP:
1839         case WACOM_HID_WD_BUTTONDOWN:
1840         case WACOM_HID_WD_BUTTONLEFT:
1841         case WACOM_HID_WD_BUTTONRIGHT:
1842                 wacom_map_usage(input, usage, field, EV_KEY,
1843                                 wacom_numbered_button_to_key(features->numbered_buttons),
1844                                 0);
1845                 features->numbered_buttons++;
1846                 features->device_type |= WACOM_DEVICETYPE_PAD;
1847                 break;
1848         case WACOM_HID_WD_TOUCHONOFF:
1849         case WACOM_HID_WD_MUTE_DEVICE:
1850                 /*
1851                  * This usage, which is used to mute touch events, comes
1852                  * from the pad packet, but is reported on the touch
1853                  * interface. Because the touch interface may not have
1854                  * been created yet, we cannot call wacom_map_usage(). In
1855                  * order to process this usage when we receive it, we set
1856                  * the usage type and code directly.
1857                  */
1858                 wacom_wac->has_mute_touch_switch = true;
1859                 usage->type = EV_SW;
1860                 usage->code = SW_MUTE_DEVICE;
1861                 features->device_type |= WACOM_DEVICETYPE_PAD;
1862                 break;
1863         case WACOM_HID_WD_TOUCHSTRIP:
1864                 wacom_map_usage(input, usage, field, EV_ABS, ABS_RX, 0);
1865                 features->device_type |= WACOM_DEVICETYPE_PAD;
1866                 break;
1867         case WACOM_HID_WD_TOUCHSTRIP2:
1868                 wacom_map_usage(input, usage, field, EV_ABS, ABS_RY, 0);
1869                 features->device_type |= WACOM_DEVICETYPE_PAD;
1870                 break;
1871         case WACOM_HID_WD_TOUCHRING:
1872                 wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
1873                 features->device_type |= WACOM_DEVICETYPE_PAD;
1874                 break;
1875         case WACOM_HID_WD_TOUCHRINGSTATUS:
1876                 /*
1877                  * Only set up type/code association. Completely mapping
1878                  * this usage may overwrite the axis resolution and range.
1879                  */
1880                 usage->type = EV_ABS;
1881                 usage->code = ABS_WHEEL;
1882                 set_bit(EV_ABS, input->evbit);
1883                 features->device_type |= WACOM_DEVICETYPE_PAD;
1884                 break;
1885         case WACOM_HID_WD_BUTTONCONFIG:
1886                 wacom_map_usage(input, usage, field, EV_KEY, KEY_BUTTONCONFIG, 0);
1887                 features->device_type |= WACOM_DEVICETYPE_PAD;
1888                 break;
1889         case WACOM_HID_WD_ONSCREEN_KEYBOARD:
1890                 wacom_map_usage(input, usage, field, EV_KEY, KEY_ONSCREEN_KEYBOARD, 0);
1891                 features->device_type |= WACOM_DEVICETYPE_PAD;
1892                 break;
1893         case WACOM_HID_WD_CONTROLPANEL:
1894                 wacom_map_usage(input, usage, field, EV_KEY, KEY_CONTROLPANEL, 0);
1895                 features->device_type |= WACOM_DEVICETYPE_PAD;
1896                 break;
1897         case WACOM_HID_WD_MODE_CHANGE:
1898                 /* do not overwrite previous data */
1899                 if (!wacom_wac->has_mode_change) {
1900                         wacom_wac->has_mode_change = true;
1901                         wacom_wac->is_direct_mode = true;
1902                 }
1903                 features->device_type |= WACOM_DEVICETYPE_PAD;
1904                 break;
1905         }
1906
1907         switch (equivalent_usage & 0xfffffff0) {
1908         case WACOM_HID_WD_EXPRESSKEY00:
1909                 wacom_map_usage(input, usage, field, EV_KEY,
1910                                 wacom_numbered_button_to_key(features->numbered_buttons),
1911                                 0);
1912                 features->numbered_buttons++;
1913                 features->device_type |= WACOM_DEVICETYPE_PAD;
1914                 break;
1915         }
1916 }
1917
1918 static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field,
1919                 struct hid_usage *usage, __s32 value)
1920 {
1921         struct wacom *wacom = hid_get_drvdata(hdev);
1922         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1923         struct input_dev *input = wacom_wac->pad_input;
1924         struct wacom_features *features = &wacom_wac->features;
1925         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
1926         int i;
1927         bool do_report = false;
1928
1929         /*
1930          * Avoid reporting this event and setting inrange_state if this usage
1931          * hasn't been mapped.
1932          */
1933         if (!usage->type && equivalent_usage != WACOM_HID_WD_MODE_CHANGE)
1934                 return;
1935
1936         if (wacom_equivalent_usage(field->physical) == HID_DG_TABLETFUNCTIONKEY) {
1937                 if (usage->hid != WACOM_HID_WD_TOUCHRING)
1938                         wacom_wac->hid_data.inrange_state |= value;
1939         }
1940
1941         switch (equivalent_usage) {
1942         case WACOM_HID_WD_TOUCHRING:
1943                 /*
1944                  * Userspace expects touchrings to increase in value with
1945                  * clockwise gestures and have their zero point at the
1946                  * tablet's left. HID events "should" be clockwise-
1947                  * increasing and zero at top, though the MobileStudio
1948                  * Pro and 2nd-gen Intuos Pro don't do this...
1949                  */
1950                 if (hdev->vendor == 0x56a &&
1951                     (hdev->product == 0x34d || hdev->product == 0x34e ||  /* MobileStudio Pro */
1952                      hdev->product == 0x357 || hdev->product == 0x358)) { /* Intuos Pro 2 */
1953                         value = (field->logical_maximum - value);
1954
1955                         if (hdev->product == 0x357 || hdev->product == 0x358)
1956                                 value = wacom_offset_rotation(input, usage, value, 3, 16);
1957                         else if (hdev->product == 0x34d || hdev->product == 0x34e)
1958                                 value = wacom_offset_rotation(input, usage, value, 1, 2);
1959                 }
1960                 else {
1961                         value = wacom_offset_rotation(input, usage, value, 1, 4);
1962                 }
1963                 do_report = true;
1964                 break;
1965         case WACOM_HID_WD_TOUCHRINGSTATUS:
1966                 if (!value)
1967                         input_event(input, usage->type, usage->code, 0);
1968                 break;
1969
1970         case WACOM_HID_WD_MUTE_DEVICE:
1971         case WACOM_HID_WD_TOUCHONOFF:
1972                 if (wacom_wac->shared->touch_input) {
1973                         bool *is_touch_on = &wacom_wac->shared->is_touch_on;
1974
1975                         if (equivalent_usage == WACOM_HID_WD_MUTE_DEVICE && value)
1976                                 *is_touch_on = !(*is_touch_on);
1977                         else if (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)
1978                                 *is_touch_on = value;
1979
1980                         input_report_switch(wacom_wac->shared->touch_input,
1981                                             SW_MUTE_DEVICE, !(*is_touch_on));
1982                         input_sync(wacom_wac->shared->touch_input);
1983                 }
1984                 break;
1985
1986         case WACOM_HID_WD_MODE_CHANGE:
1987                 if (wacom_wac->is_direct_mode != value) {
1988                         wacom_wac->is_direct_mode = value;
1989                         wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_MODE_CHANGE);
1990                 }
1991                 break;
1992
1993         case WACOM_HID_WD_BUTTONCENTER:
1994                 for (i = 0; i < wacom->led.count; i++)
1995                         wacom_update_led(wacom, features->numbered_buttons,
1996                                          value, i);
1997                  /* fall through*/
1998         default:
1999                 do_report = true;
2000                 break;
2001         }
2002
2003         if (do_report) {
2004                 input_event(input, usage->type, usage->code, value);
2005                 if (value)
2006                         wacom_wac->hid_data.pad_input_event_flag = true;
2007         }
2008 }
2009
2010 static void wacom_wac_pad_pre_report(struct hid_device *hdev,
2011                 struct hid_report *report)
2012 {
2013         struct wacom *wacom = hid_get_drvdata(hdev);
2014         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2015
2016         wacom_wac->hid_data.inrange_state = 0;
2017 }
2018
2019 static void wacom_wac_pad_report(struct hid_device *hdev,
2020                 struct hid_report *report)
2021 {
2022         struct wacom *wacom = hid_get_drvdata(hdev);
2023         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2024         struct input_dev *input = wacom_wac->pad_input;
2025         bool active = wacom_wac->hid_data.inrange_state != 0;
2026
2027         /* report prox for expresskey events */
2028         if ((wacom_equivalent_usage(report->field[0]->physical) == HID_DG_TABLETFUNCTIONKEY) &&
2029             wacom_wac->hid_data.pad_input_event_flag) {
2030                 input_event(input, EV_ABS, ABS_MISC, active ? PAD_DEVICE_ID : 0);
2031                 input_sync(input);
2032                 if (!active)
2033                         wacom_wac->hid_data.pad_input_event_flag = false;
2034         }
2035
2036 }
2037
2038 static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
2039                 struct hid_field *field, struct hid_usage *usage)
2040 {
2041         struct wacom *wacom = hid_get_drvdata(hdev);
2042         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2043         struct wacom_features *features = &wacom_wac->features;
2044         struct input_dev *input = wacom_wac->pen_input;
2045         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2046
2047         switch (equivalent_usage) {
2048         case HID_GD_X:
2049                 wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 4);
2050                 break;
2051         case HID_GD_Y:
2052                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
2053                 break;
2054         case WACOM_HID_WD_DISTANCE:
2055         case HID_GD_Z:
2056                 wacom_map_usage(input, usage, field, EV_ABS, ABS_DISTANCE, 0);
2057                 break;
2058         case HID_DG_TIPPRESSURE:
2059                 wacom_map_usage(input, usage, field, EV_ABS, ABS_PRESSURE, 0);
2060                 break;
2061         case HID_DG_INRANGE:
2062                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOOL_PEN, 0);
2063                 break;
2064         case HID_DG_INVERT:
2065                 wacom_map_usage(input, usage, field, EV_KEY,
2066                                 BTN_TOOL_RUBBER, 0);
2067                 break;
2068         case HID_DG_TILT_X:
2069                 wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_X, 0);
2070                 break;
2071         case HID_DG_TILT_Y:
2072                 wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_Y, 0);
2073                 break;
2074         case HID_DG_TWIST:
2075                 wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
2076                 break;
2077         case HID_DG_ERASER:
2078         case HID_DG_TIPSWITCH:
2079                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
2080                 break;
2081         case HID_DG_BARRELSWITCH:
2082                 wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS, 0);
2083                 break;
2084         case HID_DG_BARRELSWITCH2:
2085                 wacom_map_usage(input, usage, field, EV_KEY, BTN_STYLUS2, 0);
2086                 break;
2087         case HID_DG_TOOLSERIALNUMBER:
2088                 features->quirks |= WACOM_QUIRK_TOOLSERIAL;
2089                 wacom_map_usage(input, usage, field, EV_MSC, MSC_SERIAL, 0);
2090
2091                 /* Adjust AES usages to match modern convention */
2092                 if (usage->hid == WACOM_HID_WT_SERIALNUMBER && field->report_size == 16) {
2093                         if (field->index + 2 < field->report->maxfield) {
2094                                 struct hid_field *a = field->report->field[field->index + 1];
2095                                 struct hid_field *b = field->report->field[field->index + 2];
2096
2097                                 if (a->maxusage > 0 && a->usage[0].hid == HID_DG_TOOLSERIALNUMBER && a->report_size == 32 &&
2098                                     b->maxusage > 0 && b->usage[0].hid == 0xFF000000 && b->report_size == 8) {
2099                                         features->quirks |= WACOM_QUIRK_AESPEN;
2100                                         usage->hid = WACOM_HID_WD_TOOLTYPE;
2101                                         field->logical_minimum = S16_MIN;
2102                                         field->logical_maximum = S16_MAX;
2103                                         a->logical_minimum = S32_MIN;
2104                                         a->logical_maximum = S32_MAX;
2105                                         b->usage[0].hid = WACOM_HID_WD_SERIALHI;
2106                                         b->logical_minimum = 0;
2107                                         b->logical_maximum = U8_MAX;
2108                                 }
2109                         }
2110                 }
2111                 break;
2112         case WACOM_HID_WD_SENSE:
2113                 features->quirks |= WACOM_QUIRK_SENSE;
2114                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOOL_PEN, 0);
2115                 break;
2116         case WACOM_HID_WD_SERIALHI:
2117                 wacom_map_usage(input, usage, field, EV_ABS, ABS_MISC, 0);
2118
2119                 if (!(features->quirks & WACOM_QUIRK_AESPEN)) {
2120                         set_bit(EV_KEY, input->evbit);
2121                         input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
2122                         input_set_capability(input, EV_KEY, BTN_TOOL_RUBBER);
2123                         input_set_capability(input, EV_KEY, BTN_TOOL_BRUSH);
2124                         input_set_capability(input, EV_KEY, BTN_TOOL_PENCIL);
2125                         input_set_capability(input, EV_KEY, BTN_TOOL_AIRBRUSH);
2126                         if (!(features->device_type & WACOM_DEVICETYPE_DIRECT)) {
2127                                 input_set_capability(input, EV_KEY, BTN_TOOL_MOUSE);
2128                                 input_set_capability(input, EV_KEY, BTN_TOOL_LENS);
2129                         }
2130                 }
2131                 break;
2132         case WACOM_HID_WD_FINGERWHEEL:
2133                 wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
2134                 break;
2135         }
2136 }
2137
2138 static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field,
2139                 struct hid_usage *usage, __s32 value)
2140 {
2141         struct wacom *wacom = hid_get_drvdata(hdev);
2142         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2143         struct wacom_features *features = &wacom_wac->features;
2144         struct input_dev *input = wacom_wac->pen_input;
2145         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2146
2147         switch (equivalent_usage) {
2148         case HID_GD_Z:
2149                 /*
2150                  * HID_GD_Z "should increase as the control's position is
2151                  * moved from high to low", while ABS_DISTANCE instead
2152                  * increases in value as the tool moves from low to high.
2153                  */
2154                 value = field->logical_maximum - value;
2155                 break;
2156         case HID_DG_INRANGE:
2157                 wacom_wac->hid_data.inrange_state = value;
2158                 if (!(features->quirks & WACOM_QUIRK_SENSE))
2159                         wacom_wac->hid_data.sense_state = value;
2160                 return;
2161         case HID_DG_INVERT:
2162                 wacom_wac->hid_data.invert_state = value;
2163                 return;
2164         case HID_DG_ERASER:
2165         case HID_DG_TIPSWITCH:
2166                 wacom_wac->hid_data.tipswitch |= value;
2167                 return;
2168         case HID_DG_BARRELSWITCH:
2169                 wacom_wac->hid_data.barrelswitch = value;
2170                 return;
2171         case HID_DG_BARRELSWITCH2:
2172                 wacom_wac->hid_data.barrelswitch2 = value;
2173                 return;
2174         case HID_DG_TOOLSERIALNUMBER:
2175                 if (value) {
2176                         wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFFULL);
2177                         wacom_wac->serial[0] |= (__u32)value;
2178                 }
2179                 return;
2180         case HID_DG_TWIST:
2181                 /*
2182                  * Userspace expects pen twist to have its zero point when
2183                  * the buttons/finger is on the tablet's left. HID values
2184                  * are zero when buttons are toward the top.
2185                  */
2186                 value = wacom_offset_rotation(input, usage, value, 1, 4);
2187                 break;
2188         case WACOM_HID_WD_SENSE:
2189                 wacom_wac->hid_data.sense_state = value;
2190                 return;
2191         case WACOM_HID_WD_SERIALHI:
2192                 if (value) {
2193                         wacom_wac->serial[0] = (wacom_wac->serial[0] & 0xFFFFFFFF);
2194                         wacom_wac->serial[0] |= ((__u64)value) << 32;
2195                         /*
2196                          * Non-USI EMR devices may contain additional tool type
2197                          * information here. See WACOM_HID_WD_TOOLTYPE case for
2198                          * more details.
2199                          */
2200                         if (value >> 20 == 1) {
2201                                 wacom_wac->id[0] |= value & 0xFFFFF;
2202                         }
2203                 }
2204                 return;
2205         case WACOM_HID_WD_TOOLTYPE:
2206                 /*
2207                  * Some devices (MobileStudio Pro, and possibly later
2208                  * devices as well) do not return the complete tool
2209                  * type in their WACOM_HID_WD_TOOLTYPE usage. Use a
2210                  * bitwise OR so the complete value can be built
2211                  * up over time :(
2212                  */
2213                 wacom_wac->id[0] |= value;
2214                 return;
2215         case WACOM_HID_WD_OFFSETLEFT:
2216                 if (features->offset_left && value != features->offset_left)
2217                         hid_warn(hdev, "%s: overriding existing left offset "
2218                                  "%d -> %d\n", __func__, value,
2219                                  features->offset_left);
2220                 features->offset_left = value;
2221                 return;
2222         case WACOM_HID_WD_OFFSETRIGHT:
2223                 if (features->offset_right && value != features->offset_right)
2224                         hid_warn(hdev, "%s: overriding existing right offset "
2225                                  "%d -> %d\n", __func__, value,
2226                                  features->offset_right);
2227                 features->offset_right = value;
2228                 return;
2229         case WACOM_HID_WD_OFFSETTOP:
2230                 if (features->offset_top && value != features->offset_top)
2231                         hid_warn(hdev, "%s: overriding existing top offset "
2232                                  "%d -> %d\n", __func__, value,
2233                                  features->offset_top);
2234                 features->offset_top = value;
2235                 return;
2236         case WACOM_HID_WD_OFFSETBOTTOM:
2237                 if (features->offset_bottom && value != features->offset_bottom)
2238                         hid_warn(hdev, "%s: overriding existing bottom offset "
2239                                  "%d -> %d\n", __func__, value,
2240                                  features->offset_bottom);
2241                 features->offset_bottom = value;
2242                 return;
2243         }
2244
2245         /* send pen events only when touch is up or forced out
2246          * or touch arbitration is off
2247          */
2248         if (!usage->type || delay_pen_events(wacom_wac))
2249                 return;
2250
2251         /* send pen events only when the pen is in range */
2252         if (wacom_wac->hid_data.inrange_state)
2253                 input_event(input, usage->type, usage->code, value);
2254         else if (wacom_wac->shared->stylus_in_proximity && !wacom_wac->hid_data.sense_state)
2255                 input_event(input, usage->type, usage->code, 0);
2256 }
2257
2258 static void wacom_wac_pen_pre_report(struct hid_device *hdev,
2259                 struct hid_report *report)
2260 {
2261         return;
2262 }
2263
2264 static void wacom_wac_pen_report(struct hid_device *hdev,
2265                 struct hid_report *report)
2266 {
2267         struct wacom *wacom = hid_get_drvdata(hdev);
2268         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2269         struct input_dev *input = wacom_wac->pen_input;
2270         bool range = wacom_wac->hid_data.inrange_state;
2271         bool sense = wacom_wac->hid_data.sense_state;
2272
2273         if (!wacom_wac->tool[0] && range) { /* first in range */
2274                 /* Going into range select tool */
2275                 if (wacom_wac->hid_data.invert_state)
2276                         wacom_wac->tool[0] = BTN_TOOL_RUBBER;
2277                 else if (wacom_wac->id[0])
2278                         wacom_wac->tool[0] = wacom_intuos_get_tool_type(wacom_wac->id[0]);
2279                 else
2280                         wacom_wac->tool[0] = BTN_TOOL_PEN;
2281         }
2282
2283         /* keep pen state for touch events */
2284         wacom_wac->shared->stylus_in_proximity = sense;
2285
2286         if (!delay_pen_events(wacom_wac) && wacom_wac->tool[0]) {
2287                 int id = wacom_wac->id[0];
2288                 int sw_state = wacom_wac->hid_data.barrelswitch |
2289                                (wacom_wac->hid_data.barrelswitch2 << 1);
2290
2291                 input_report_key(input, BTN_STYLUS, sw_state == 1);
2292                 input_report_key(input, BTN_STYLUS2, sw_state == 2);
2293                 input_report_key(input, BTN_STYLUS3, sw_state == 3);
2294
2295                 /*
2296                  * Non-USI EMR tools should have their IDs mangled to
2297                  * match the legacy behavior of wacom_intuos_general
2298                  */
2299                 if (wacom_wac->serial[0] >> 52 == 1)
2300                         id = wacom_intuos_id_mangle(id);
2301
2302                 /*
2303                  * To ensure compatibility with xf86-input-wacom, we should
2304                  * report the BTN_TOOL_* event prior to the ABS_MISC or
2305                  * MSC_SERIAL events.
2306                  */
2307                 input_report_key(input, BTN_TOUCH,
2308                                 wacom_wac->hid_data.tipswitch);
2309                 input_report_key(input, wacom_wac->tool[0], sense);
2310                 if (wacom_wac->serial[0]) {
2311                         input_event(input, EV_MSC, MSC_SERIAL, wacom_wac->serial[0]);
2312                         input_report_abs(input, ABS_MISC, sense ? id : 0);
2313                 }
2314
2315                 wacom_wac->hid_data.tipswitch = false;
2316
2317                 input_sync(input);
2318         }
2319
2320         if (!sense) {
2321                 wacom_wac->tool[0] = 0;
2322                 wacom_wac->id[0] = 0;
2323                 wacom_wac->serial[0] = 0;
2324         }
2325 }
2326
2327 static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
2328                 struct hid_field *field, struct hid_usage *usage)
2329 {
2330         struct wacom *wacom = hid_get_drvdata(hdev);
2331         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2332         struct input_dev *input = wacom_wac->touch_input;
2333         unsigned touch_max = wacom_wac->features.touch_max;
2334         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2335
2336         switch (equivalent_usage) {
2337         case HID_GD_X:
2338                 if (touch_max == 1)
2339                         wacom_map_usage(input, usage, field, EV_ABS, ABS_X, 4);
2340                 else
2341                         wacom_map_usage(input, usage, field, EV_ABS,
2342                                         ABS_MT_POSITION_X, 4);
2343                 break;
2344         case HID_GD_Y:
2345                 if (touch_max == 1)
2346                         wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
2347                 else
2348                         wacom_map_usage(input, usage, field, EV_ABS,
2349                                         ABS_MT_POSITION_Y, 4);
2350                 break;
2351         case HID_DG_WIDTH:
2352         case HID_DG_HEIGHT:
2353                 wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MAJOR, 0);
2354                 wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MINOR, 0);
2355                 input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
2356                 break;
2357         case HID_DG_TIPSWITCH:
2358                 wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
2359                 break;
2360         case HID_DG_CONTACTCOUNT:
2361                 wacom_wac->hid_data.cc_report = field->report->id;
2362                 wacom_wac->hid_data.cc_index = field->index;
2363                 wacom_wac->hid_data.cc_value_index = usage->usage_index;
2364                 break;
2365         case HID_DG_CONTACTID:
2366                 if ((field->logical_maximum - field->logical_minimum) < touch_max) {
2367                         /*
2368                          * The HID descriptor for G11 sensors leaves logical
2369                          * maximum set to '1' despite it being a multitouch
2370                          * device. Override to a sensible number.
2371                          */
2372                         field->logical_maximum = 255;
2373                 }
2374                 break;
2375         }
2376 }
2377
2378 static void wacom_wac_finger_slot(struct wacom_wac *wacom_wac,
2379                 struct input_dev *input)
2380 {
2381         struct hid_data *hid_data = &wacom_wac->hid_data;
2382         bool mt = wacom_wac->features.touch_max > 1;
2383         bool prox = hid_data->tipswitch &&
2384                     report_touch_events(wacom_wac);
2385
2386         if (wacom_wac->shared->has_mute_touch_switch &&
2387             !wacom_wac->shared->is_touch_on) {
2388                 if (!wacom_wac->shared->touch_down)
2389                         return;
2390                 prox = 0;
2391         }
2392
2393         wacom_wac->hid_data.num_received++;
2394         if (wacom_wac->hid_data.num_received > wacom_wac->hid_data.num_expected)
2395                 return;
2396
2397         if (mt) {
2398                 int slot;
2399
2400                 slot = input_mt_get_slot_by_key(input, hid_data->id);
2401                 input_mt_slot(input, slot);
2402                 input_mt_report_slot_state(input, MT_TOOL_FINGER, prox);
2403         }
2404         else {
2405                 input_report_key(input, BTN_TOUCH, prox);
2406         }
2407
2408         if (prox) {
2409                 input_report_abs(input, mt ? ABS_MT_POSITION_X : ABS_X,
2410                                  hid_data->x);
2411                 input_report_abs(input, mt ? ABS_MT_POSITION_Y : ABS_Y,
2412                                  hid_data->y);
2413
2414                 if (test_bit(ABS_MT_TOUCH_MAJOR, input->absbit)) {
2415                         input_report_abs(input, ABS_MT_TOUCH_MAJOR, max(hid_data->width, hid_data->height));
2416                         input_report_abs(input, ABS_MT_TOUCH_MINOR, min(hid_data->width, hid_data->height));
2417                         if (hid_data->width != hid_data->height)
2418                                 input_report_abs(input, ABS_MT_ORIENTATION, hid_data->width <= hid_data->height ? 0 : 1);
2419                 }
2420         }
2421 }
2422
2423 static void wacom_wac_finger_event(struct hid_device *hdev,
2424                 struct hid_field *field, struct hid_usage *usage, __s32 value)
2425 {
2426         struct wacom *wacom = hid_get_drvdata(hdev);
2427         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2428         unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
2429
2430         switch (equivalent_usage) {
2431         case HID_GD_X:
2432                 wacom_wac->hid_data.x = value;
2433                 break;
2434         case HID_GD_Y:
2435                 wacom_wac->hid_data.y = value;
2436                 break;
2437         case HID_DG_WIDTH:
2438                 wacom_wac->hid_data.width = value;
2439                 break;
2440         case HID_DG_HEIGHT:
2441                 wacom_wac->hid_data.height = value;
2442                 break;
2443         case HID_DG_CONTACTID:
2444                 wacom_wac->hid_data.id = value;
2445                 break;
2446         case HID_DG_TIPSWITCH:
2447                 wacom_wac->hid_data.tipswitch = value;
2448                 break;
2449         }
2450
2451
2452         if (usage->usage_index + 1 == field->report_count) {
2453                 if (equivalent_usage == wacom_wac->hid_data.last_slot_field)
2454                         wacom_wac_finger_slot(wacom_wac, wacom_wac->touch_input);
2455         }
2456 }
2457
2458 static void wacom_wac_finger_pre_report(struct hid_device *hdev,
2459                 struct hid_report *report)
2460 {
2461         struct wacom *wacom = hid_get_drvdata(hdev);
2462         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2463         struct hid_data* hid_data = &wacom_wac->hid_data;
2464         int i;
2465
2466         for (i = 0; i < report->maxfield; i++) {
2467                 struct hid_field *field = report->field[i];
2468                 int j;
2469
2470                 for (j = 0; j < field->maxusage; j++) {
2471                         struct hid_usage *usage = &field->usage[j];
2472                         unsigned int equivalent_usage =
2473                                 wacom_equivalent_usage(usage->hid);
2474
2475                         switch (equivalent_usage) {
2476                         case HID_GD_X:
2477                         case HID_GD_Y:
2478                         case HID_DG_WIDTH:
2479                         case HID_DG_HEIGHT:
2480                         case HID_DG_CONTACTID:
2481                         case HID_DG_INRANGE:
2482                         case HID_DG_INVERT:
2483                         case HID_DG_TIPSWITCH:
2484                                 hid_data->last_slot_field = equivalent_usage;
2485                                 break;
2486                         case HID_DG_CONTACTCOUNT:
2487                                 hid_data->cc_report = report->id;
2488                                 hid_data->cc_index = i;
2489                                 hid_data->cc_value_index = j;
2490                                 break;
2491                         }
2492                 }
2493         }
2494
2495         if (hid_data->cc_report != 0 &&
2496             hid_data->cc_index >= 0) {
2497                 struct hid_field *field = report->field[hid_data->cc_index];
2498                 int value = field->value[hid_data->cc_value_index];
2499                 if (value)
2500                         hid_data->num_expected = value;
2501         }
2502         else {
2503                 hid_data->num_expected = wacom_wac->features.touch_max;
2504         }
2505 }
2506
2507 static void wacom_wac_finger_report(struct hid_device *hdev,
2508                 struct hid_report *report)
2509 {
2510         struct wacom *wacom = hid_get_drvdata(hdev);
2511         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2512         struct input_dev *input = wacom_wac->touch_input;
2513         unsigned touch_max = wacom_wac->features.touch_max;
2514
2515         /* If more packets of data are expected, give us a chance to
2516          * process them rather than immediately syncing a partial
2517          * update.
2518          */
2519         if (wacom_wac->hid_data.num_received < wacom_wac->hid_data.num_expected)
2520                 return;
2521
2522         if (touch_max > 1)
2523                 input_mt_sync_frame(input);
2524
2525         input_sync(input);
2526         wacom_wac->hid_data.num_received = 0;
2527
2528         /* keep touch state for pen event */
2529         wacom_wac->shared->touch_down = wacom_wac_finger_count_touches(wacom_wac);
2530 }
2531
2532 void wacom_wac_usage_mapping(struct hid_device *hdev,
2533                 struct hid_field *field, struct hid_usage *usage)
2534 {
2535         struct wacom *wacom = hid_get_drvdata(hdev);
2536         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2537         struct wacom_features *features = &wacom_wac->features;
2538
2539         if (WACOM_DIRECT_DEVICE(field))
2540                 features->device_type |= WACOM_DEVICETYPE_DIRECT;
2541
2542         /* usage tests must precede field tests */
2543         if (WACOM_BATTERY_USAGE(usage))
2544                 wacom_wac_battery_usage_mapping(hdev, field, usage);
2545         else if (WACOM_PAD_FIELD(field))
2546                 wacom_wac_pad_usage_mapping(hdev, field, usage);
2547         else if (WACOM_PEN_FIELD(field))
2548                 wacom_wac_pen_usage_mapping(hdev, field, usage);
2549         else if (WACOM_FINGER_FIELD(field))
2550                 wacom_wac_finger_usage_mapping(hdev, field, usage);
2551 }
2552
2553 void wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
2554                 struct hid_usage *usage, __s32 value)
2555 {
2556         struct wacom *wacom = hid_get_drvdata(hdev);
2557
2558         if (wacom->wacom_wac.features.type != HID_GENERIC)
2559                 return;
2560
2561         if (value > field->logical_maximum || value < field->logical_minimum)
2562                 return;
2563
2564         /* usage tests must precede field tests */
2565         if (WACOM_BATTERY_USAGE(usage))
2566                 wacom_wac_battery_event(hdev, field, usage, value);
2567         else if (WACOM_PAD_FIELD(field) && wacom->wacom_wac.pad_input)
2568                 wacom_wac_pad_event(hdev, field, usage, value);
2569         else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
2570                 wacom_wac_pen_event(hdev, field, usage, value);
2571         else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
2572                 wacom_wac_finger_event(hdev, field, usage, value);
2573 }
2574
2575 static void wacom_report_events(struct hid_device *hdev, struct hid_report *report)
2576 {
2577         int r;
2578
2579         for (r = 0; r < report->maxfield; r++) {
2580                 struct hid_field *field;
2581                 unsigned count, n;
2582
2583                 field = report->field[r];
2584                 count = field->report_count;
2585
2586                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
2587                         continue;
2588
2589                 for (n = 0; n < count; n++)
2590                         wacom_wac_event(hdev, field, &field->usage[n], field->value[n]);
2591         }
2592 }
2593
2594 void wacom_wac_report(struct hid_device *hdev, struct hid_report *report)
2595 {
2596         struct wacom *wacom = hid_get_drvdata(hdev);
2597         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2598         struct hid_field *field = report->field[0];
2599
2600         if (wacom_wac->features.type != HID_GENERIC)
2601                 return;
2602
2603         wacom_wac_battery_pre_report(hdev, report);
2604
2605         if (WACOM_PAD_FIELD(field) && wacom->wacom_wac.pad_input)
2606                 wacom_wac_pad_pre_report(hdev, report);
2607         else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
2608                 wacom_wac_pen_pre_report(hdev, report);
2609         else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
2610                 wacom_wac_finger_pre_report(hdev, report);
2611
2612         wacom_report_events(hdev, report);
2613
2614         /*
2615          * Non-input reports may be sent prior to the device being
2616          * completely initialized. Since only their events need
2617          * to be processed, exit after 'wacom_report_events' has
2618          * been called to prevent potential crashes in the report-
2619          * processing functions.
2620          */
2621         if (report->type != HID_INPUT_REPORT)
2622                 return;
2623
2624         wacom_wac_battery_report(hdev, report);
2625
2626         if (WACOM_PAD_FIELD(field) && wacom->wacom_wac.pad_input)
2627                 wacom_wac_pad_report(hdev, report);
2628         else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
2629                 wacom_wac_pen_report(hdev, report);
2630         else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
2631                 wacom_wac_finger_report(hdev, report);
2632 }
2633
2634 static int wacom_bpt_touch(struct wacom_wac *wacom)
2635 {
2636         struct wacom_features *features = &wacom->features;
2637         struct input_dev *input = wacom->touch_input;
2638         struct input_dev *pad_input = wacom->pad_input;
2639         unsigned char *data = wacom->data;
2640         int i;
2641
2642         if (data[0] != 0x02)
2643             return 0;
2644
2645         for (i = 0; i < 2; i++) {
2646                 int offset = (data[1] & 0x80) ? (8 * i) : (9 * i);
2647                 bool touch = report_touch_events(wacom)
2648                            && (data[offset + 3] & 0x80);
2649
2650                 input_mt_slot(input, i);
2651                 input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
2652                 if (touch) {
2653                         int x = get_unaligned_be16(&data[offset + 3]) & 0x7ff;
2654                         int y = get_unaligned_be16(&data[offset + 5]) & 0x7ff;
2655                         if (features->quirks & WACOM_QUIRK_BBTOUCH_LOWRES) {
2656                                 x <<= 5;
2657                                 y <<= 5;
2658                         }
2659                         input_report_abs(input, ABS_MT_POSITION_X, x);
2660                         input_report_abs(input, ABS_MT_POSITION_Y, y);
2661                 }
2662         }
2663
2664         input_mt_sync_frame(input);
2665
2666         input_report_key(pad_input, BTN_LEFT, (data[1] & 0x08) != 0);
2667         input_report_key(pad_input, BTN_FORWARD, (data[1] & 0x04) != 0);
2668         input_report_key(pad_input, BTN_BACK, (data[1] & 0x02) != 0);
2669         input_report_key(pad_input, BTN_RIGHT, (data[1] & 0x01) != 0);
2670         wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
2671
2672         return 1;
2673 }
2674
2675 static void wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data)
2676 {
2677         struct wacom_features *features = &wacom->features;
2678         struct input_dev *input = wacom->touch_input;
2679         bool touch = data[1] & 0x80;
2680         int slot = input_mt_get_slot_by_key(input, data[0]);
2681
2682         if (slot < 0)
2683                 return;
2684
2685         touch = touch && report_touch_events(wacom);
2686
2687         input_mt_slot(input, slot);
2688         input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
2689
2690         if (touch) {
2691                 int x = (data[2] << 4) | (data[4] >> 4);
2692                 int y = (data[3] << 4) | (data[4] & 0x0f);
2693                 int width, height;
2694
2695                 if (features->type >= INTUOSPS && features->type <= INTUOSHT2) {
2696                         width  = data[5] * 100;
2697                         height = data[6] * 100;
2698                 } else {
2699                         /*
2700                          * "a" is a scaled-down area which we assume is
2701                          * roughly circular and which can be described as:
2702                          * a=(pi*r^2)/C.
2703                          */
2704                         int a = data[5];
2705                         int x_res = input_abs_get_res(input, ABS_MT_POSITION_X);
2706                         int y_res = input_abs_get_res(input, ABS_MT_POSITION_Y);
2707                         width = 2 * int_sqrt(a * WACOM_CONTACT_AREA_SCALE);
2708                         height = width * y_res / x_res;
2709                 }
2710
2711                 input_report_abs(input, ABS_MT_POSITION_X, x);
2712                 input_report_abs(input, ABS_MT_POSITION_Y, y);
2713                 input_report_abs(input, ABS_MT_TOUCH_MAJOR, width);
2714                 input_report_abs(input, ABS_MT_TOUCH_MINOR, height);
2715         }
2716 }
2717
2718 static void wacom_bpt3_button_msg(struct wacom_wac *wacom, unsigned char *data)
2719 {
2720         struct input_dev *input = wacom->pad_input;
2721         struct wacom_features *features = &wacom->features;
2722
2723         if (features->type == INTUOSHT || features->type == INTUOSHT2) {
2724                 input_report_key(input, BTN_LEFT, (data[1] & 0x02) != 0);
2725                 input_report_key(input, BTN_BACK, (data[1] & 0x08) != 0);
2726         } else {
2727                 input_report_key(input, BTN_BACK, (data[1] & 0x02) != 0);
2728                 input_report_key(input, BTN_LEFT, (data[1] & 0x08) != 0);
2729         }
2730         input_report_key(input, BTN_FORWARD, (data[1] & 0x04) != 0);
2731         input_report_key(input, BTN_RIGHT, (data[1] & 0x01) != 0);
2732 }
2733
2734 static int wacom_bpt3_touch(struct wacom_wac *wacom)
2735 {
2736         unsigned char *data = wacom->data;
2737         int count = data[1] & 0x07;
2738         int  touch_changed = 0, i;
2739
2740         if (data[0] != 0x02)
2741             return 0;
2742
2743         /* data has up to 7 fixed sized 8-byte messages starting at data[2] */
2744         for (i = 0; i < count; i++) {
2745                 int offset = (8 * i) + 2;
2746                 int msg_id = data[offset];
2747
2748                 if (msg_id >= 2 && msg_id <= 17) {
2749                         wacom_bpt3_touch_msg(wacom, data + offset);
2750                         touch_changed++;
2751                 } else if (msg_id == 128)
2752                         wacom_bpt3_button_msg(wacom, data + offset);
2753
2754         }
2755
2756         /* only update touch if we actually have a touchpad and touch data changed */
2757         if (wacom->touch_input && touch_changed) {
2758                 input_mt_sync_frame(wacom->touch_input);
2759                 wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom);
2760         }
2761
2762         return 1;
2763 }
2764
2765 static int wacom_bpt_pen(struct wacom_wac *wacom)
2766 {
2767         struct wacom_features *features = &wacom->features;
2768         struct input_dev *input = wacom->pen_input;
2769         unsigned char *data = wacom->data;
2770         int prox = 0, x = 0, y = 0, p = 0, d = 0, pen = 0, btn1 = 0, btn2 = 0;
2771
2772         if (data[0] != WACOM_REPORT_PENABLED)
2773             return 0;
2774
2775         prox = (data[1] & 0x20) == 0x20;
2776
2777         /*
2778          * All reports shared between PEN and RUBBER tool must be
2779          * forced to a known starting value (zero) when transitioning to
2780          * out-of-prox.
2781          *
2782          * If not reset then, to userspace, it will look like lost events
2783          * if new tool comes in-prox with same values as previous tool sent.
2784          *
2785          * Hardware does report zero in most out-of-prox cases but not all.
2786          */
2787         if (!wacom->shared->stylus_in_proximity) {
2788                 if (data[1] & 0x08) {
2789                         wacom->tool[0] = BTN_TOOL_RUBBER;
2790                         wacom->id[0] = ERASER_DEVICE_ID;
2791                 } else {
2792                         wacom->tool[0] = BTN_TOOL_PEN;
2793                         wacom->id[0] = STYLUS_DEVICE_ID;
2794                 }
2795         }
2796
2797         wacom->shared->stylus_in_proximity = prox;
2798         if (delay_pen_events(wacom))
2799                 return 0;
2800
2801         if (prox) {
2802                 x = le16_to_cpup((__le16 *)&data[2]);
2803                 y = le16_to_cpup((__le16 *)&data[4]);
2804                 p = le16_to_cpup((__le16 *)&data[6]);
2805                 /*
2806                  * Convert distance from out prox to distance from tablet.
2807                  * distance will be greater than distance_max once
2808                  * touching and applying pressure; do not report negative
2809                  * distance.
2810                  */
2811                 if (data[8] <= features->distance_max)
2812                         d = features->distance_max - data[8];
2813
2814                 pen = data[1] & 0x01;
2815                 btn1 = data[1] & 0x02;
2816                 btn2 = data[1] & 0x04;
2817         } else {
2818                 wacom->id[0] = 0;
2819         }
2820
2821         input_report_key(input, BTN_TOUCH, pen);
2822         input_report_key(input, BTN_STYLUS, btn1);
2823         input_report_key(input, BTN_STYLUS2, btn2);
2824
2825         input_report_abs(input, ABS_X, x);
2826         input_report_abs(input, ABS_Y, y);
2827         input_report_abs(input, ABS_PRESSURE, p);
2828         input_report_abs(input, ABS_DISTANCE, d);
2829
2830         input_report_key(input, wacom->tool[0], prox); /* PEN or RUBBER */
2831         input_report_abs(input, ABS_MISC, wacom->id[0]); /* TOOL ID */
2832
2833         return 1;
2834 }
2835
2836 static int wacom_bpt_irq(struct wacom_wac *wacom, size_t len)
2837 {
2838         struct wacom_features *features = &wacom->features;
2839
2840         if ((features->type == INTUOSHT2) &&
2841             (features->device_type & WACOM_DEVICETYPE_PEN))
2842                 return wacom_intuos_irq(wacom);
2843         else if (len == WACOM_PKGLEN_BBTOUCH)
2844                 return wacom_bpt_touch(wacom);
2845         else if (len == WACOM_PKGLEN_BBTOUCH3)
2846                 return wacom_bpt3_touch(wacom);
2847         else if (len == WACOM_PKGLEN_BBFUN || len == WACOM_PKGLEN_BBPEN)
2848                 return wacom_bpt_pen(wacom);
2849
2850         return 0;
2851 }
2852
2853 static void wacom_bamboo_pad_pen_event(struct wacom_wac *wacom,
2854                 unsigned char *data)
2855 {
2856         unsigned char prefix;
2857
2858         /*
2859          * We need to reroute the event from the debug interface to the
2860          * pen interface.
2861          * We need to add the report ID to the actual pen report, so we
2862          * temporary overwrite the first byte to prevent having to kzalloc/kfree
2863          * and memcpy the report.
2864          */
2865         prefix = data[0];
2866         data[0] = WACOM_REPORT_BPAD_PEN;
2867
2868         /*
2869          * actually reroute the event.
2870          * No need to check if wacom->shared->pen is valid, hid_input_report()
2871          * will check for us.
2872          */
2873         hid_input_report(wacom->shared->pen, HID_INPUT_REPORT, data,
2874                          WACOM_PKGLEN_PENABLED, 1);
2875
2876         data[0] = prefix;
2877 }
2878
2879 static int wacom_bamboo_pad_touch_event(struct wacom_wac *wacom,
2880                 unsigned char *data)
2881 {
2882         struct input_dev *input = wacom->touch_input;
2883         unsigned char *finger_data, prefix;
2884         unsigned id;
2885         int x, y;
2886         bool valid;
2887
2888         prefix = data[0];
2889
2890         for (id = 0; id < wacom->features.touch_max; id++) {
2891                 valid = !!(prefix & BIT(id)) &&
2892                         report_touch_events(wacom);
2893
2894                 input_mt_slot(input, id);
2895                 input_mt_report_slot_state(input, MT_TOOL_FINGER, valid);
2896
2897                 if (!valid)
2898                         continue;
2899
2900                 finger_data = data + 1 + id * 3;
2901                 x = finger_data[0] | ((finger_data[1] & 0x0f) << 8);
2902                 y = (finger_data[2] << 4) | (finger_data[1] >> 4);
2903
2904                 input_report_abs(input, ABS_MT_POSITION_X, x);
2905                 input_report_abs(input, ABS_MT_POSITION_Y, y);
2906         }
2907
2908         input_mt_sync_frame(input);
2909
2910         input_report_key(input, BTN_LEFT, prefix & 0x40);
2911         input_report_key(input, BTN_RIGHT, prefix & 0x80);
2912
2913         /* keep touch state for pen event */
2914         wacom->shared->touch_down = !!prefix && report_touch_events(wacom);
2915
2916         return 1;
2917 }
2918
2919 static int wacom_bamboo_pad_irq(struct wacom_wac *wacom, size_t len)
2920 {
2921         unsigned char *data = wacom->data;
2922
2923         if (!((len == WACOM_PKGLEN_BPAD_TOUCH) ||
2924               (len == WACOM_PKGLEN_BPAD_TOUCH_USB)) ||
2925             (data[0] != WACOM_REPORT_BPAD_TOUCH))
2926                 return 0;
2927
2928         if (data[1] & 0x01)
2929                 wacom_bamboo_pad_pen_event(wacom, &data[1]);
2930
2931         if (data[1] & 0x02)
2932                 return wacom_bamboo_pad_touch_event(wacom, &data[9]);
2933
2934         return 0;
2935 }
2936
2937 static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
2938 {
2939         unsigned char *data = wacom->data;
2940         int connected;
2941
2942         if (len != WACOM_PKGLEN_WIRELESS || data[0] != WACOM_REPORT_WL)
2943                 return 0;
2944
2945         connected = data[1] & 0x01;
2946         if (connected) {
2947                 int pid, battery, charging;
2948
2949                 if ((wacom->shared->type == INTUOSHT ||
2950                     wacom->shared->type == INTUOSHT2) &&
2951                     wacom->shared->touch_input &&
2952                     wacom->shared->touch_max) {
2953                         input_report_switch(wacom->shared->touch_input,
2954                                         SW_MUTE_DEVICE, data[5] & 0x40);
2955                         input_sync(wacom->shared->touch_input);
2956                 }
2957
2958                 pid = get_unaligned_be16(&data[6]);
2959                 battery = (data[5] & 0x3f) * 100 / 31;
2960                 charging = !!(data[5] & 0x80);
2961                 if (wacom->pid != pid) {
2962                         wacom->pid = pid;
2963                         wacom_schedule_work(wacom, WACOM_WORKER_WIRELESS);
2964                 }
2965
2966                 wacom_notify_battery(wacom, WACOM_POWER_SUPPLY_STATUS_AUTO,
2967                                      battery, charging, 1, 0);
2968
2969         } else if (wacom->pid != 0) {
2970                 /* disconnected while previously connected */
2971                 wacom->pid = 0;
2972                 wacom_schedule_work(wacom, WACOM_WORKER_WIRELESS);
2973                 wacom_notify_battery(wacom, POWER_SUPPLY_STATUS_UNKNOWN, 0, 0, 0, 0);
2974         }
2975
2976         return 0;
2977 }
2978
2979 static int wacom_status_irq(struct wacom_wac *wacom_wac, size_t len)
2980 {
2981         struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
2982         struct wacom_features *features = &wacom_wac->features;
2983         unsigned char *data = wacom_wac->data;
2984
2985         if (data[0] != WACOM_REPORT_USB)
2986                 return 0;
2987
2988         if ((features->type == INTUOSHT ||
2989             features->type == INTUOSHT2) &&
2990             wacom_wac->shared->touch_input &&
2991             features->touch_max) {
2992                 input_report_switch(wacom_wac->shared->touch_input,
2993                                     SW_MUTE_DEVICE, data[8] & 0x40);
2994                 input_sync(wacom_wac->shared->touch_input);
2995         }
2996
2997         if (data[9] & 0x02) { /* wireless module is attached */
2998                 int battery = (data[8] & 0x3f) * 100 / 31;
2999                 bool charging = !!(data[8] & 0x80);
3000
3001                 wacom_notify_battery(wacom_wac, WACOM_POWER_SUPPLY_STATUS_AUTO,
3002                                      battery, charging, battery || charging, 1);
3003
3004                 if (!wacom->battery.battery &&
3005                     !(features->quirks & WACOM_QUIRK_BATTERY)) {
3006                         features->quirks |= WACOM_QUIRK_BATTERY;
3007                         wacom_schedule_work(wacom_wac, WACOM_WORKER_BATTERY);
3008                 }
3009         }
3010         else if ((features->quirks & WACOM_QUIRK_BATTERY) &&
3011                  wacom->battery.battery) {
3012                 features->quirks &= ~WACOM_QUIRK_BATTERY;
3013                 wacom_schedule_work(wacom_wac, WACOM_WORKER_BATTERY);
3014                 wacom_notify_battery(wacom_wac, POWER_SUPPLY_STATUS_UNKNOWN, 0, 0, 0, 0);
3015         }
3016         return 0;
3017 }
3018
3019 void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
3020 {
3021         bool sync;
3022
3023         switch (wacom_wac->features.type) {
3024         case PENPARTNER:
3025                 sync = wacom_penpartner_irq(wacom_wac);
3026                 break;
3027
3028         case PL:
3029                 sync = wacom_pl_irq(wacom_wac);
3030                 break;
3031
3032         case WACOM_G4:
3033         case GRAPHIRE:
3034         case GRAPHIRE_BT:
3035         case WACOM_MO:
3036                 sync = wacom_graphire_irq(wacom_wac);
3037                 break;
3038
3039         case PTU:
3040                 sync = wacom_ptu_irq(wacom_wac);
3041                 break;
3042
3043         case DTU:
3044                 sync = wacom_dtu_irq(wacom_wac);
3045                 break;
3046
3047         case DTUS:
3048         case DTUSX:
3049                 sync = wacom_dtus_irq(wacom_wac);
3050                 break;
3051
3052         case INTUOS:
3053         case INTUOS3S:
3054         case INTUOS3:
3055         case INTUOS3L:
3056         case INTUOS4S:
3057         case INTUOS4:
3058         case INTUOS4L:
3059         case CINTIQ:
3060         case WACOM_BEE:
3061         case WACOM_13HD:
3062         case WACOM_21UX2:
3063         case WACOM_22HD:
3064         case WACOM_24HD:
3065         case WACOM_27QHD:
3066         case DTK:
3067         case CINTIQ_HYBRID:
3068         case CINTIQ_COMPANION_2:
3069                 sync = wacom_intuos_irq(wacom_wac);
3070                 break;
3071
3072         case INTUOS4WL:
3073                 sync = wacom_intuos_bt_irq(wacom_wac, len);
3074                 break;
3075
3076         case WACOM_24HDT:
3077         case WACOM_27QHDT:
3078                 sync = wacom_24hdt_irq(wacom_wac);
3079                 break;
3080
3081         case INTUOS5S:
3082         case INTUOS5:
3083         case INTUOS5L:
3084         case INTUOSPS:
3085         case INTUOSPM:
3086         case INTUOSPL:
3087                 if (len == WACOM_PKGLEN_BBTOUCH3)
3088                         sync = wacom_bpt3_touch(wacom_wac);
3089                 else if (wacom_wac->data[0] == WACOM_REPORT_USB)
3090                         sync = wacom_status_irq(wacom_wac, len);
3091                 else
3092                         sync = wacom_intuos_irq(wacom_wac);
3093                 break;
3094
3095         case INTUOSP2_BT:
3096                 sync = wacom_intuos_pro2_bt_irq(wacom_wac, len);
3097                 break;
3098
3099         case TABLETPC:
3100         case TABLETPCE:
3101         case TABLETPC2FG:
3102         case MTSCREEN:
3103         case MTTPC:
3104         case MTTPC_B:
3105                 sync = wacom_tpc_irq(wacom_wac, len);
3106                 break;
3107
3108         case BAMBOO_PT:
3109         case BAMBOO_PEN:
3110         case BAMBOO_TOUCH:
3111         case INTUOSHT:
3112         case INTUOSHT2:
3113                 if (wacom_wac->data[0] == WACOM_REPORT_USB)
3114                         sync = wacom_status_irq(wacom_wac, len);
3115                 else
3116                         sync = wacom_bpt_irq(wacom_wac, len);
3117                 break;
3118
3119         case BAMBOO_PAD:
3120                 sync = wacom_bamboo_pad_irq(wacom_wac, len);
3121                 break;
3122
3123         case WIRELESS:
3124                 sync = wacom_wireless_irq(wacom_wac, len);
3125                 break;
3126
3127         case REMOTE:
3128                 sync = false;
3129                 if (wacom_wac->data[0] == WACOM_REPORT_DEVICE_LIST)
3130                         wacom_remote_status_irq(wacom_wac, len);
3131                 else
3132                         sync = wacom_remote_irq(wacom_wac, len);
3133                 break;
3134
3135         default:
3136                 sync = false;
3137                 break;
3138         }
3139
3140         if (sync) {
3141                 if (wacom_wac->pen_input)
3142                         input_sync(wacom_wac->pen_input);
3143                 if (wacom_wac->touch_input)
3144                         input_sync(wacom_wac->touch_input);
3145                 if (wacom_wac->pad_input)
3146                         input_sync(wacom_wac->pad_input);
3147         }
3148 }
3149
3150 static void wacom_setup_basic_pro_pen(struct wacom_wac *wacom_wac)
3151 {
3152         struct input_dev *input_dev = wacom_wac->pen_input;
3153
3154         input_set_capability(input_dev, EV_MSC, MSC_SERIAL);
3155
3156         __set_bit(BTN_TOOL_PEN, input_dev->keybit);
3157         __set_bit(BTN_STYLUS, input_dev->keybit);
3158         __set_bit(BTN_STYLUS2, input_dev->keybit);
3159
3160         input_set_abs_params(input_dev, ABS_DISTANCE,
3161                              0, wacom_wac->features.distance_max, wacom_wac->features.distance_fuzz, 0);
3162 }
3163
3164 static void wacom_setup_cintiq(struct wacom_wac *wacom_wac)
3165 {
3166         struct input_dev *input_dev = wacom_wac->pen_input;
3167         struct wacom_features *features = &wacom_wac->features;
3168
3169         wacom_setup_basic_pro_pen(wacom_wac);
3170
3171         __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
3172         __set_bit(BTN_TOOL_BRUSH, input_dev->keybit);
3173         __set_bit(BTN_TOOL_PENCIL, input_dev->keybit);
3174         __set_bit(BTN_TOOL_AIRBRUSH, input_dev->keybit);
3175
3176         input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
3177         input_set_abs_params(input_dev, ABS_TILT_X, -64, 63, features->tilt_fuzz, 0);
3178         input_abs_set_res(input_dev, ABS_TILT_X, 57);
3179         input_set_abs_params(input_dev, ABS_TILT_Y, -64, 63, features->tilt_fuzz, 0);
3180         input_abs_set_res(input_dev, ABS_TILT_Y, 57);
3181 }
3182
3183 static void wacom_setup_intuos(struct wacom_wac *wacom_wac)
3184 {
3185         struct input_dev *input_dev = wacom_wac->pen_input;
3186
3187         input_set_capability(input_dev, EV_REL, REL_WHEEL);
3188
3189         wacom_setup_cintiq(wacom_wac);
3190
3191         __set_bit(BTN_LEFT, input_dev->keybit);
3192         __set_bit(BTN_RIGHT, input_dev->keybit);
3193         __set_bit(BTN_MIDDLE, input_dev->keybit);
3194         __set_bit(BTN_SIDE, input_dev->keybit);
3195         __set_bit(BTN_EXTRA, input_dev->keybit);
3196         __set_bit(BTN_TOOL_MOUSE, input_dev->keybit);
3197         __set_bit(BTN_TOOL_LENS, input_dev->keybit);
3198
3199         input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
3200         input_abs_set_res(input_dev, ABS_RZ, 287);
3201         input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
3202 }
3203
3204 void wacom_setup_device_quirks(struct wacom *wacom)
3205 {
3206         struct wacom_features *features = &wacom->wacom_wac.features;
3207
3208         /* The pen and pad share the same interface on most devices */
3209         if (features->type == GRAPHIRE_BT || features->type == WACOM_G4 ||
3210             features->type == DTUS ||
3211             (features->type >= INTUOS3S && features->type <= WACOM_MO)) {
3212                 if (features->device_type & WACOM_DEVICETYPE_PEN)
3213                         features->device_type |= WACOM_DEVICETYPE_PAD;
3214         }
3215
3216         /* touch device found but size is not defined. use default */