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5519cab4 BT |
1 | /* |
2 | * HID driver for multitouch panels | |
3 | * | |
4 | * Copyright (c) 2010-2011 Stephane Chatty <chatty@enac.fr> | |
5 | * Copyright (c) 2010-2011 Benjamin Tissoires <benjamin.tissoires@gmail.com> | |
6 | * Copyright (c) 2010-2011 Ecole Nationale de l'Aviation Civile, France | |
7 | * | |
4875ac11 RN |
8 | * This code is partly based on hid-egalax.c: |
9 | * | |
10 | * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr> | |
11 | * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> | |
12 | * Copyright (c) 2010 Canonical, Ltd. | |
13 | * | |
f786bba4 BT |
14 | * This code is partly based on hid-3m-pct.c: |
15 | * | |
16 | * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr> | |
17 | * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se> | |
18 | * Copyright (c) 2010 Canonical, Ltd. | |
19 | * | |
5519cab4 BT |
20 | */ |
21 | ||
22 | /* | |
23 | * This program is free software; you can redistribute it and/or modify it | |
24 | * under the terms of the GNU General Public License as published by the Free | |
25 | * Software Foundation; either version 2 of the License, or (at your option) | |
26 | * any later version. | |
27 | */ | |
28 | ||
29 | #include <linux/device.h> | |
30 | #include <linux/hid.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/usb.h> | |
34 | #include <linux/input/mt.h> | |
35 | #include "usbhid/usbhid.h" | |
36 | ||
37 | ||
38 | MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>"); | |
ef2fafb3 | 39 | MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); |
5519cab4 BT |
40 | MODULE_DESCRIPTION("HID multitouch panels"); |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
43 | #include "hid-ids.h" | |
44 | ||
45 | /* quirks to control the device */ | |
46 | #define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0) | |
47 | #define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1) | |
2d93666e | 48 | #define MT_QUIRK_CYPRESS (1 << 2) |
5572da08 | 49 | #define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3) |
2d93666e BT |
50 | #define MT_QUIRK_VALID_IS_INRANGE (1 << 4) |
51 | #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 5) | |
4875ac11 | 52 | #define MT_QUIRK_EGALAX_XYZ_FIXUP (1 << 6) |
4a6ee685 | 53 | #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 7) |
5519cab4 BT |
54 | |
55 | struct mt_slot { | |
56 | __s32 x, y, p, w, h; | |
57 | __s32 contactid; /* the device ContactID assigned to this slot */ | |
58 | bool touch_state; /* is the touch valid? */ | |
59 | bool seen_in_this_frame;/* has this slot been updated */ | |
60 | }; | |
61 | ||
62 | struct mt_device { | |
63 | struct mt_slot curdata; /* placeholder of incoming data */ | |
64 | struct mt_class *mtclass; /* our mt device class */ | |
65 | unsigned last_field_index; /* last field index of the report */ | |
66 | unsigned last_slot_field; /* the last field of a slot */ | |
67 | __s8 inputmode; /* InputMode HID feature, -1 if non-existent */ | |
68 | __u8 num_received; /* how many contacts we received */ | |
69 | __u8 num_expected; /* expected last contact index */ | |
9498f954 | 70 | __u8 maxcontacts; |
5519cab4 | 71 | bool curvalid; /* is the current contact valid? */ |
9498f954 | 72 | struct mt_slot *slots; |
5519cab4 BT |
73 | }; |
74 | ||
75 | struct mt_class { | |
2d93666e | 76 | __s32 name; /* MT_CLS */ |
5519cab4 BT |
77 | __s32 quirks; |
78 | __s32 sn_move; /* Signal/noise ratio for move events */ | |
f786bba4 BT |
79 | __s32 sn_width; /* Signal/noise ratio for width events */ |
80 | __s32 sn_height; /* Signal/noise ratio for height events */ | |
5519cab4 BT |
81 | __s32 sn_pressure; /* Signal/noise ratio for pressure events */ |
82 | __u8 maxcontacts; | |
83 | }; | |
84 | ||
85 | /* classes of device behavior */ | |
1e9cf35b BT |
86 | #define MT_CLS_DEFAULT 1 |
87 | #define MT_CLS_DUAL_INRANGE_CONTACTID 2 | |
88 | #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 3 | |
89 | #define MT_CLS_CYPRESS 4 | |
4875ac11 | 90 | #define MT_CLS_EGALAX 5 |
043b403a | 91 | #define MT_CLS_STANTUM 6 |
f786bba4 | 92 | #define MT_CLS_3M 7 |
6ab3a9a6 | 93 | #define MT_CLS_CONFIDENCE 8 |
4a6ee685 | 94 | #define MT_CLS_CONFIDENCE_MINUS_ONE 9 |
c04abeef | 95 | #define MT_CLS_DUAL_NSMU_CONTACTID 10 |
5519cab4 | 96 | |
9498f954 BT |
97 | #define MT_DEFAULT_MAXCONTACT 10 |
98 | ||
5519cab4 BT |
99 | /* |
100 | * these device-dependent functions determine what slot corresponds | |
101 | * to a valid contact that was just read. | |
102 | */ | |
103 | ||
a3b5e577 BT |
104 | static int cypress_compute_slot(struct mt_device *td) |
105 | { | |
106 | if (td->curdata.contactid != 0 || td->num_received == 0) | |
107 | return td->curdata.contactid; | |
108 | else | |
109 | return -1; | |
110 | } | |
111 | ||
5519cab4 BT |
112 | static int find_slot_from_contactid(struct mt_device *td) |
113 | { | |
114 | int i; | |
9498f954 | 115 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
116 | if (td->slots[i].contactid == td->curdata.contactid && |
117 | td->slots[i].touch_state) | |
118 | return i; | |
119 | } | |
9498f954 | 120 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
121 | if (!td->slots[i].seen_in_this_frame && |
122 | !td->slots[i].touch_state) | |
123 | return i; | |
124 | } | |
5519cab4 BT |
125 | /* should not occurs. If this happens that means |
126 | * that the device sent more touches that it says | |
127 | * in the report descriptor. It is ignored then. */ | |
2d93666e | 128 | return -1; |
5519cab4 BT |
129 | } |
130 | ||
131 | struct mt_class mt_classes[] = { | |
2d93666e | 132 | { .name = MT_CLS_DEFAULT, |
9498f954 | 133 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, |
1e9cf35b | 134 | { .name = MT_CLS_DUAL_INRANGE_CONTACTID, |
2d93666e BT |
135 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
136 | MT_QUIRK_SLOT_IS_CONTACTID, | |
137 | .maxcontacts = 2 }, | |
1e9cf35b | 138 | { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
2d93666e BT |
139 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
140 | MT_QUIRK_SLOT_IS_CONTACTNUMBER, | |
141 | .maxcontacts = 2 }, | |
142 | { .name = MT_CLS_CYPRESS, | |
143 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
144 | MT_QUIRK_CYPRESS, | |
145 | .maxcontacts = 10 }, | |
4a6ee685 BT |
146 | { .name = MT_CLS_CONFIDENCE_MINUS_ONE, |
147 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
148 | MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, | |
4875ac11 RN |
149 | { .name = MT_CLS_EGALAX, |
150 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
151 | MT_QUIRK_VALID_IS_INRANGE | | |
152 | MT_QUIRK_EGALAX_XYZ_FIXUP, | |
153 | .maxcontacts = 2, | |
154 | .sn_move = 4096, | |
155 | .sn_pressure = 32, | |
156 | }, | |
043b403a BT |
157 | { .name = MT_CLS_STANTUM, |
158 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, | |
f786bba4 BT |
159 | { .name = MT_CLS_3M, |
160 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
161 | MT_QUIRK_SLOT_IS_CONTACTID, | |
162 | .sn_move = 2048, | |
163 | .sn_width = 128, | |
164 | .sn_height = 128 }, | |
6ab3a9a6 JS |
165 | { .name = MT_CLS_CONFIDENCE, |
166 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, | |
c04abeef BT |
167 | { .name = MT_CLS_DUAL_NSMU_CONTACTID, |
168 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
169 | MT_QUIRK_SLOT_IS_CONTACTID, | |
170 | .maxcontacts = 2 }, | |
043b403a | 171 | |
2d93666e | 172 | { } |
5519cab4 BT |
173 | }; |
174 | ||
f635bd11 | 175 | static void mt_feature_mapping(struct hid_device *hdev, |
5519cab4 BT |
176 | struct hid_field *field, struct hid_usage *usage) |
177 | { | |
9498f954 BT |
178 | struct mt_device *td = hid_get_drvdata(hdev); |
179 | ||
180 | switch (usage->hid) { | |
181 | case HID_DG_INPUTMODE: | |
5519cab4 | 182 | td->inputmode = field->report->id; |
9498f954 BT |
183 | break; |
184 | case HID_DG_CONTACTMAX: | |
185 | td->maxcontacts = field->value[0]; | |
186 | if (td->mtclass->maxcontacts) | |
187 | /* check if the maxcontacts is given by the class */ | |
188 | td->maxcontacts = td->mtclass->maxcontacts; | |
189 | ||
190 | break; | |
5519cab4 BT |
191 | } |
192 | } | |
193 | ||
194 | static void set_abs(struct input_dev *input, unsigned int code, | |
195 | struct hid_field *field, int snratio) | |
196 | { | |
197 | int fmin = field->logical_minimum; | |
198 | int fmax = field->logical_maximum; | |
199 | int fuzz = snratio ? (fmax - fmin) / snratio : 0; | |
200 | input_set_abs_params(input, code, fmin, fmax, fuzz, 0); | |
201 | } | |
202 | ||
203 | static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
204 | struct hid_field *field, struct hid_usage *usage, | |
205 | unsigned long **bit, int *max) | |
206 | { | |
207 | struct mt_device *td = hid_get_drvdata(hdev); | |
208 | struct mt_class *cls = td->mtclass; | |
4875ac11 RN |
209 | __s32 quirks = cls->quirks; |
210 | ||
5519cab4 BT |
211 | switch (usage->hid & HID_USAGE_PAGE) { |
212 | ||
213 | case HID_UP_GENDESK: | |
214 | switch (usage->hid) { | |
215 | case HID_GD_X: | |
4875ac11 RN |
216 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
217 | field->logical_maximum = 32760; | |
5519cab4 BT |
218 | hid_map_usage(hi, usage, bit, max, |
219 | EV_ABS, ABS_MT_POSITION_X); | |
220 | set_abs(hi->input, ABS_MT_POSITION_X, field, | |
221 | cls->sn_move); | |
222 | /* touchscreen emulation */ | |
223 | set_abs(hi->input, ABS_X, field, cls->sn_move); | |
224 | td->last_slot_field = usage->hid; | |
2955caed | 225 | td->last_field_index = field->index; |
5519cab4 BT |
226 | return 1; |
227 | case HID_GD_Y: | |
4875ac11 RN |
228 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
229 | field->logical_maximum = 32760; | |
5519cab4 BT |
230 | hid_map_usage(hi, usage, bit, max, |
231 | EV_ABS, ABS_MT_POSITION_Y); | |
232 | set_abs(hi->input, ABS_MT_POSITION_Y, field, | |
233 | cls->sn_move); | |
234 | /* touchscreen emulation */ | |
235 | set_abs(hi->input, ABS_Y, field, cls->sn_move); | |
236 | td->last_slot_field = usage->hid; | |
2955caed | 237 | td->last_field_index = field->index; |
5519cab4 BT |
238 | return 1; |
239 | } | |
240 | return 0; | |
241 | ||
242 | case HID_UP_DIGITIZER: | |
243 | switch (usage->hid) { | |
244 | case HID_DG_INRANGE: | |
245 | td->last_slot_field = usage->hid; | |
2955caed | 246 | td->last_field_index = field->index; |
5519cab4 BT |
247 | return 1; |
248 | case HID_DG_CONFIDENCE: | |
249 | td->last_slot_field = usage->hid; | |
2955caed | 250 | td->last_field_index = field->index; |
5519cab4 BT |
251 | return 1; |
252 | case HID_DG_TIPSWITCH: | |
253 | hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); | |
254 | input_set_capability(hi->input, EV_KEY, BTN_TOUCH); | |
255 | td->last_slot_field = usage->hid; | |
2955caed | 256 | td->last_field_index = field->index; |
5519cab4 BT |
257 | return 1; |
258 | case HID_DG_CONTACTID: | |
9498f954 | 259 | input_mt_init_slots(hi->input, td->maxcontacts); |
5519cab4 | 260 | td->last_slot_field = usage->hid; |
2955caed | 261 | td->last_field_index = field->index; |
5519cab4 BT |
262 | return 1; |
263 | case HID_DG_WIDTH: | |
264 | hid_map_usage(hi, usage, bit, max, | |
265 | EV_ABS, ABS_MT_TOUCH_MAJOR); | |
f786bba4 BT |
266 | set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, |
267 | cls->sn_width); | |
5519cab4 | 268 | td->last_slot_field = usage->hid; |
2955caed | 269 | td->last_field_index = field->index; |
5519cab4 BT |
270 | return 1; |
271 | case HID_DG_HEIGHT: | |
272 | hid_map_usage(hi, usage, bit, max, | |
273 | EV_ABS, ABS_MT_TOUCH_MINOR); | |
f786bba4 BT |
274 | set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, |
275 | cls->sn_height); | |
1e648a13 BT |
276 | input_set_abs_params(hi->input, |
277 | ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
5519cab4 | 278 | td->last_slot_field = usage->hid; |
2955caed | 279 | td->last_field_index = field->index; |
5519cab4 BT |
280 | return 1; |
281 | case HID_DG_TIPPRESSURE: | |
4875ac11 RN |
282 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
283 | field->logical_minimum = 0; | |
5519cab4 BT |
284 | hid_map_usage(hi, usage, bit, max, |
285 | EV_ABS, ABS_MT_PRESSURE); | |
286 | set_abs(hi->input, ABS_MT_PRESSURE, field, | |
287 | cls->sn_pressure); | |
288 | /* touchscreen emulation */ | |
289 | set_abs(hi->input, ABS_PRESSURE, field, | |
290 | cls->sn_pressure); | |
291 | td->last_slot_field = usage->hid; | |
2955caed | 292 | td->last_field_index = field->index; |
5519cab4 BT |
293 | return 1; |
294 | case HID_DG_CONTACTCOUNT: | |
2955caed | 295 | td->last_field_index = field->index; |
5519cab4 BT |
296 | return 1; |
297 | case HID_DG_CONTACTMAX: | |
298 | /* we don't set td->last_slot_field as contactcount and | |
299 | * contact max are global to the report */ | |
2955caed | 300 | td->last_field_index = field->index; |
5519cab4 BT |
301 | return -1; |
302 | } | |
303 | /* let hid-input decide for the others */ | |
304 | return 0; | |
305 | ||
306 | case 0xff000000: | |
307 | /* we do not want to map these: no input-oriented meaning */ | |
308 | return -1; | |
309 | } | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
314 | static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
315 | struct hid_field *field, struct hid_usage *usage, | |
316 | unsigned long **bit, int *max) | |
317 | { | |
318 | if (usage->type == EV_KEY || usage->type == EV_ABS) | |
319 | set_bit(usage->type, hi->input->evbit); | |
320 | ||
321 | return -1; | |
322 | } | |
323 | ||
324 | static int mt_compute_slot(struct mt_device *td) | |
325 | { | |
2d93666e | 326 | __s32 quirks = td->mtclass->quirks; |
5519cab4 | 327 | |
2d93666e BT |
328 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) |
329 | return td->curdata.contactid; | |
5519cab4 | 330 | |
2d93666e | 331 | if (quirks & MT_QUIRK_CYPRESS) |
a3b5e577 BT |
332 | return cypress_compute_slot(td); |
333 | ||
2d93666e BT |
334 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) |
335 | return td->num_received; | |
5572da08 | 336 | |
4a6ee685 BT |
337 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) |
338 | return td->curdata.contactid - 1; | |
339 | ||
5519cab4 BT |
340 | return find_slot_from_contactid(td); |
341 | } | |
342 | ||
343 | /* | |
344 | * this function is called when a whole contact has been processed, | |
345 | * so that it can assign it to a slot and store the data there | |
346 | */ | |
347 | static void mt_complete_slot(struct mt_device *td) | |
348 | { | |
2d93666e | 349 | td->curdata.seen_in_this_frame = true; |
5519cab4 | 350 | if (td->curvalid) { |
5519cab4 BT |
351 | int slotnum = mt_compute_slot(td); |
352 | ||
9498f954 | 353 | if (slotnum >= 0 && slotnum < td->maxcontacts) |
2d93666e | 354 | td->slots[slotnum] = td->curdata; |
5519cab4 BT |
355 | } |
356 | td->num_received++; | |
357 | } | |
358 | ||
359 | ||
360 | /* | |
361 | * this function is called when a whole packet has been received and processed, | |
362 | * so that it can decide what to send to the input layer. | |
363 | */ | |
364 | static void mt_emit_event(struct mt_device *td, struct input_dev *input) | |
365 | { | |
366 | int i; | |
367 | ||
9498f954 | 368 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
369 | struct mt_slot *s = &(td->slots[i]); |
370 | if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && | |
371 | !s->seen_in_this_frame) { | |
5519cab4 BT |
372 | s->touch_state = false; |
373 | } | |
374 | ||
375 | input_mt_slot(input, i); | |
376 | input_mt_report_slot_state(input, MT_TOOL_FINGER, | |
377 | s->touch_state); | |
2d93666e | 378 | if (s->touch_state) { |
f786bba4 BT |
379 | /* this finger is on the screen */ |
380 | int wide = (s->w > s->h); | |
381 | /* divided by two to match visual scale of touch */ | |
382 | int major = max(s->w, s->h) >> 1; | |
383 | int minor = min(s->w, s->h) >> 1; | |
384 | ||
2d93666e BT |
385 | input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); |
386 | input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); | |
f786bba4 | 387 | input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); |
2d93666e | 388 | input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); |
f786bba4 BT |
389 | input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); |
390 | input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
2d93666e | 391 | } |
5519cab4 BT |
392 | s->seen_in_this_frame = false; |
393 | ||
394 | } | |
395 | ||
396 | input_mt_report_pointer_emulation(input, true); | |
397 | input_sync(input); | |
398 | td->num_received = 0; | |
399 | } | |
400 | ||
401 | ||
402 | ||
403 | static int mt_event(struct hid_device *hid, struct hid_field *field, | |
404 | struct hid_usage *usage, __s32 value) | |
405 | { | |
406 | struct mt_device *td = hid_get_drvdata(hid); | |
2d93666e | 407 | __s32 quirks = td->mtclass->quirks; |
5519cab4 | 408 | |
9498f954 | 409 | if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { |
5519cab4 BT |
410 | switch (usage->hid) { |
411 | case HID_DG_INRANGE: | |
2d93666e BT |
412 | if (quirks & MT_QUIRK_VALID_IS_INRANGE) |
413 | td->curvalid = value; | |
5519cab4 BT |
414 | break; |
415 | case HID_DG_TIPSWITCH: | |
2d93666e BT |
416 | if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) |
417 | td->curvalid = value; | |
5519cab4 BT |
418 | td->curdata.touch_state = value; |
419 | break; | |
420 | case HID_DG_CONFIDENCE: | |
2d93666e BT |
421 | if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) |
422 | td->curvalid = value; | |
5519cab4 BT |
423 | break; |
424 | case HID_DG_CONTACTID: | |
425 | td->curdata.contactid = value; | |
426 | break; | |
427 | case HID_DG_TIPPRESSURE: | |
428 | td->curdata.p = value; | |
429 | break; | |
430 | case HID_GD_X: | |
431 | td->curdata.x = value; | |
432 | break; | |
433 | case HID_GD_Y: | |
434 | td->curdata.y = value; | |
435 | break; | |
436 | case HID_DG_WIDTH: | |
437 | td->curdata.w = value; | |
438 | break; | |
439 | case HID_DG_HEIGHT: | |
440 | td->curdata.h = value; | |
441 | break; | |
442 | case HID_DG_CONTACTCOUNT: | |
443 | /* | |
2d93666e BT |
444 | * Includes multi-packet support where subsequent |
445 | * packets are sent with zero contactcount. | |
5519cab4 BT |
446 | */ |
447 | if (value) | |
2d93666e | 448 | td->num_expected = value; |
5519cab4 BT |
449 | break; |
450 | ||
451 | default: | |
452 | /* fallback to the generic hidinput handling */ | |
453 | return 0; | |
454 | } | |
5519cab4 | 455 | |
f153fc39 | 456 | if (usage->hid == td->last_slot_field) { |
2d93666e | 457 | mt_complete_slot(td); |
f153fc39 | 458 | } |
2d93666e BT |
459 | |
460 | if (field->index == td->last_field_index | |
461 | && td->num_received >= td->num_expected) | |
462 | mt_emit_event(td, field->hidinput->input); | |
5519cab4 | 463 | |
2d93666e | 464 | } |
5519cab4 BT |
465 | |
466 | /* we have handled the hidinput part, now remains hiddev */ | |
467 | if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) | |
468 | hid->hiddev_hid_event(hid, field, usage, value); | |
469 | ||
470 | return 1; | |
471 | } | |
472 | ||
473 | static void mt_set_input_mode(struct hid_device *hdev) | |
474 | { | |
475 | struct mt_device *td = hid_get_drvdata(hdev); | |
476 | struct hid_report *r; | |
477 | struct hid_report_enum *re; | |
478 | ||
479 | if (td->inputmode < 0) | |
480 | return; | |
481 | ||
482 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); | |
483 | r = re->report_id_hash[td->inputmode]; | |
484 | if (r) { | |
485 | r->field[0]->value[0] = 0x02; | |
486 | usbhid_submit_report(hdev, r, USB_DIR_OUT); | |
487 | } | |
488 | } | |
489 | ||
490 | static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
491 | { | |
2d93666e | 492 | int ret, i; |
5519cab4 | 493 | struct mt_device *td; |
2d93666e BT |
494 | struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ |
495 | ||
496 | for (i = 0; mt_classes[i].name ; i++) { | |
497 | if (id->driver_data == mt_classes[i].name) { | |
498 | mtclass = &(mt_classes[i]); | |
499 | break; | |
500 | } | |
501 | } | |
5519cab4 BT |
502 | |
503 | /* This allows the driver to correctly support devices | |
504 | * that emit events over several HID messages. | |
505 | */ | |
506 | hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; | |
507 | ||
9498f954 | 508 | td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); |
5519cab4 BT |
509 | if (!td) { |
510 | dev_err(&hdev->dev, "cannot allocate multitouch data\n"); | |
511 | return -ENOMEM; | |
512 | } | |
513 | td->mtclass = mtclass; | |
514 | td->inputmode = -1; | |
515 | hid_set_drvdata(hdev, td); | |
516 | ||
517 | ret = hid_parse(hdev); | |
518 | if (ret != 0) | |
519 | goto fail; | |
520 | ||
521 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
2d93666e | 522 | if (ret) |
5519cab4 BT |
523 | goto fail; |
524 | ||
9498f954 BT |
525 | if (!td->maxcontacts) |
526 | td->maxcontacts = MT_DEFAULT_MAXCONTACT; | |
527 | ||
528 | td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), | |
529 | GFP_KERNEL); | |
530 | if (!td->slots) { | |
531 | dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); | |
532 | hid_hw_stop(hdev); | |
533 | ret = -ENOMEM; | |
534 | goto fail; | |
535 | } | |
536 | ||
5519cab4 BT |
537 | mt_set_input_mode(hdev); |
538 | ||
539 | return 0; | |
540 | ||
541 | fail: | |
542 | kfree(td); | |
543 | return ret; | |
544 | } | |
545 | ||
546 | #ifdef CONFIG_PM | |
547 | static int mt_reset_resume(struct hid_device *hdev) | |
548 | { | |
549 | mt_set_input_mode(hdev); | |
550 | return 0; | |
551 | } | |
552 | #endif | |
553 | ||
554 | static void mt_remove(struct hid_device *hdev) | |
555 | { | |
556 | struct mt_device *td = hid_get_drvdata(hdev); | |
557 | hid_hw_stop(hdev); | |
9498f954 | 558 | kfree(td->slots); |
5519cab4 BT |
559 | kfree(td); |
560 | hid_set_drvdata(hdev, NULL); | |
561 | } | |
562 | ||
563 | static const struct hid_device_id mt_devices[] = { | |
564 | ||
f786bba4 BT |
565 | /* 3M panels */ |
566 | { .driver_data = MT_CLS_3M, | |
567 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
568 | USB_DEVICE_ID_3M1968) }, | |
569 | { .driver_data = MT_CLS_3M, | |
570 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
571 | USB_DEVICE_ID_3M2256) }, | |
572 | ||
e6aac342 BT |
573 | /* ActionStar panels */ |
574 | { .driver_data = MT_CLS_DEFAULT, | |
575 | HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, | |
576 | USB_DEVICE_ID_ACTIONSTAR_1011) }, | |
577 | ||
a841b62c BT |
578 | /* Cando panels */ |
579 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
580 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
581 | USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, | |
582 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
583 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
584 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, | |
585 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
586 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
587 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, | |
588 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
589 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
590 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, | |
591 | ||
79603dc9 BT |
592 | /* CVTouch panels */ |
593 | { .driver_data = MT_CLS_DEFAULT, | |
594 | HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, | |
595 | USB_DEVICE_ID_CVTOUCH_SCREEN) }, | |
596 | ||
a3b5e577 BT |
597 | /* Cypress panel */ |
598 | { .driver_data = MT_CLS_CYPRESS, | |
599 | HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, | |
600 | USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, | |
601 | ||
c04abeef BT |
602 | /* Elo TouchSystems IntelliTouch Plus panel */ |
603 | { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, | |
604 | HID_USB_DEVICE(USB_VENDOR_ID_ELO, | |
605 | USB_DEVICE_ID_ELO_TS2515) }, | |
606 | ||
5572da08 | 607 | /* GeneralTouch panel */ |
1e9cf35b | 608 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
5572da08 BT |
609 | HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, |
610 | USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, | |
611 | ||
ee0fbd14 BT |
612 | /* GoodTouch panels */ |
613 | { .driver_data = MT_CLS_DEFAULT, | |
614 | HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, | |
615 | USB_DEVICE_ID_GOODTOUCH_000f) }, | |
616 | ||
4e61f0d7 AZ |
617 | /* Ilitek dual touch panel */ |
618 | { .driver_data = MT_CLS_DEFAULT, | |
619 | HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, | |
620 | USB_DEVICE_ID_ILITEK_MULTITOUCH) }, | |
621 | ||
4dfcced8 BT |
622 | /* IRTOUCH panels */ |
623 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, | |
624 | HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, | |
625 | USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, | |
626 | ||
df167c4a BT |
627 | /* Lumio panels */ |
628 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
629 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
630 | USB_DEVICE_ID_CRYSTALTOUCH) }, | |
631 | ||
4a6ee685 BT |
632 | /* MosArt panels */ |
633 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
634 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
635 | USB_DEVICE_ID_ASUS_T91MT)}, | |
636 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
637 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
638 | USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, | |
639 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
640 | HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, | |
641 | USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, | |
642 | ||
6ab3a9a6 JS |
643 | /* PenMount panels */ |
644 | { .driver_data = MT_CLS_CONFIDENCE, | |
645 | HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, | |
646 | USB_DEVICE_ID_PENMOUNT_PCI) }, | |
647 | ||
5519cab4 | 648 | /* PixCir-based panels */ |
1e9cf35b | 649 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
650 | HID_USB_DEVICE(USB_VENDOR_ID_HANVON, |
651 | USB_DEVICE_ID_HANVON_MULTITOUCH) }, | |
1e9cf35b | 652 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
653 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, |
654 | USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, | |
655 | ||
4875ac11 RN |
656 | /* Resistive eGalax devices */ |
657 | { .driver_data = MT_CLS_EGALAX, | |
658 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
659 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) }, | |
660 | { .driver_data = MT_CLS_EGALAX, | |
661 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
662 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) }, | |
663 | ||
664 | /* Capacitive eGalax devices */ | |
665 | { .driver_data = MT_CLS_EGALAX, | |
666 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
667 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) }, | |
668 | { .driver_data = MT_CLS_EGALAX, | |
669 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
670 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) }, | |
671 | { .driver_data = MT_CLS_EGALAX, | |
672 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
673 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) }, | |
674 | ||
043b403a BT |
675 | /* Stantum panels */ |
676 | { .driver_data = MT_CLS_STANTUM, | |
677 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, | |
678 | USB_DEVICE_ID_MTP)}, | |
679 | { .driver_data = MT_CLS_STANTUM, | |
680 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, | |
681 | USB_DEVICE_ID_MTP_STM)}, | |
682 | { .driver_data = MT_CLS_STANTUM, | |
683 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, | |
684 | USB_DEVICE_ID_MTP_SITRONIX)}, | |
685 | ||
5519cab4 BT |
686 | { } |
687 | }; | |
688 | MODULE_DEVICE_TABLE(hid, mt_devices); | |
689 | ||
690 | static const struct hid_usage_id mt_grabbed_usages[] = { | |
691 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, | |
692 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} | |
693 | }; | |
694 | ||
695 | static struct hid_driver mt_driver = { | |
696 | .name = "hid-multitouch", | |
697 | .id_table = mt_devices, | |
698 | .probe = mt_probe, | |
699 | .remove = mt_remove, | |
700 | .input_mapping = mt_input_mapping, | |
701 | .input_mapped = mt_input_mapped, | |
702 | .feature_mapping = mt_feature_mapping, | |
703 | .usage_table = mt_grabbed_usages, | |
704 | .event = mt_event, | |
705 | #ifdef CONFIG_PM | |
706 | .reset_resume = mt_reset_resume, | |
707 | #endif | |
708 | }; | |
709 | ||
710 | static int __init mt_init(void) | |
711 | { | |
712 | return hid_register_driver(&mt_driver); | |
713 | } | |
714 | ||
715 | static void __exit mt_exit(void) | |
716 | { | |
717 | hid_unregister_driver(&mt_driver); | |
718 | } | |
719 | ||
720 | module_init(mt_init); | |
721 | module_exit(mt_exit); |