Commit | Line | Data |
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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 */ | |
22408283 BT |
86 | #define MT_CLS_DEFAULT 0x0001 |
87 | ||
88 | #define MT_CLS_CONFIDENCE 0x0002 | |
89 | #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0003 | |
90 | #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0004 | |
91 | #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0005 | |
92 | #define MT_CLS_DUAL_NSMU_CONTACTID 0x0006 | |
93 | ||
94 | /* vendor specific classes */ | |
95 | #define MT_CLS_3M 0x0101 | |
96 | #define MT_CLS_CYPRESS 0x0102 | |
97 | #define MT_CLS_EGALAX 0x0103 | |
5519cab4 | 98 | |
9498f954 BT |
99 | #define MT_DEFAULT_MAXCONTACT 10 |
100 | ||
5519cab4 BT |
101 | /* |
102 | * these device-dependent functions determine what slot corresponds | |
103 | * to a valid contact that was just read. | |
104 | */ | |
105 | ||
a3b5e577 BT |
106 | static int cypress_compute_slot(struct mt_device *td) |
107 | { | |
108 | if (td->curdata.contactid != 0 || td->num_received == 0) | |
109 | return td->curdata.contactid; | |
110 | else | |
111 | return -1; | |
112 | } | |
113 | ||
5519cab4 BT |
114 | static int find_slot_from_contactid(struct mt_device *td) |
115 | { | |
116 | int i; | |
9498f954 | 117 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
118 | if (td->slots[i].contactid == td->curdata.contactid && |
119 | td->slots[i].touch_state) | |
120 | return i; | |
121 | } | |
9498f954 | 122 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
123 | if (!td->slots[i].seen_in_this_frame && |
124 | !td->slots[i].touch_state) | |
125 | return i; | |
126 | } | |
5519cab4 BT |
127 | /* should not occurs. If this happens that means |
128 | * that the device sent more touches that it says | |
129 | * in the report descriptor. It is ignored then. */ | |
2d93666e | 130 | return -1; |
5519cab4 BT |
131 | } |
132 | ||
133 | struct mt_class mt_classes[] = { | |
2d93666e | 134 | { .name = MT_CLS_DEFAULT, |
9498f954 | 135 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, |
22408283 BT |
136 | { .name = MT_CLS_CONFIDENCE, |
137 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, | |
138 | { .name = MT_CLS_CONFIDENCE_MINUS_ONE, | |
139 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
140 | MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, | |
1e9cf35b | 141 | { .name = MT_CLS_DUAL_INRANGE_CONTACTID, |
2d93666e BT |
142 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
143 | MT_QUIRK_SLOT_IS_CONTACTID, | |
144 | .maxcontacts = 2 }, | |
1e9cf35b | 145 | { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
2d93666e BT |
146 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
147 | MT_QUIRK_SLOT_IS_CONTACTNUMBER, | |
148 | .maxcontacts = 2 }, | |
22408283 BT |
149 | { .name = MT_CLS_DUAL_NSMU_CONTACTID, |
150 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
151 | MT_QUIRK_SLOT_IS_CONTACTID, | |
152 | .maxcontacts = 2 }, | |
153 | ||
154 | /* | |
155 | * vendor specific classes | |
156 | */ | |
157 | { .name = MT_CLS_3M, | |
158 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
159 | MT_QUIRK_SLOT_IS_CONTACTID, | |
160 | .sn_move = 2048, | |
161 | .sn_width = 128, | |
162 | .sn_height = 128 }, | |
2d93666e BT |
163 | { .name = MT_CLS_CYPRESS, |
164 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
165 | MT_QUIRK_CYPRESS, | |
166 | .maxcontacts = 10 }, | |
4875ac11 RN |
167 | { .name = MT_CLS_EGALAX, |
168 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
169 | MT_QUIRK_VALID_IS_INRANGE | | |
170 | MT_QUIRK_EGALAX_XYZ_FIXUP, | |
171 | .maxcontacts = 2, | |
172 | .sn_move = 4096, | |
173 | .sn_pressure = 32, | |
174 | }, | |
043b403a | 175 | |
2d93666e | 176 | { } |
5519cab4 BT |
177 | }; |
178 | ||
f635bd11 | 179 | static void mt_feature_mapping(struct hid_device *hdev, |
5519cab4 BT |
180 | struct hid_field *field, struct hid_usage *usage) |
181 | { | |
9498f954 BT |
182 | struct mt_device *td = hid_get_drvdata(hdev); |
183 | ||
184 | switch (usage->hid) { | |
185 | case HID_DG_INPUTMODE: | |
5519cab4 | 186 | td->inputmode = field->report->id; |
9498f954 BT |
187 | break; |
188 | case HID_DG_CONTACTMAX: | |
189 | td->maxcontacts = field->value[0]; | |
190 | if (td->mtclass->maxcontacts) | |
191 | /* check if the maxcontacts is given by the class */ | |
192 | td->maxcontacts = td->mtclass->maxcontacts; | |
193 | ||
194 | break; | |
5519cab4 BT |
195 | } |
196 | } | |
197 | ||
198 | static void set_abs(struct input_dev *input, unsigned int code, | |
199 | struct hid_field *field, int snratio) | |
200 | { | |
201 | int fmin = field->logical_minimum; | |
202 | int fmax = field->logical_maximum; | |
203 | int fuzz = snratio ? (fmax - fmin) / snratio : 0; | |
204 | input_set_abs_params(input, code, fmin, fmax, fuzz, 0); | |
205 | } | |
206 | ||
207 | static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
208 | struct hid_field *field, struct hid_usage *usage, | |
209 | unsigned long **bit, int *max) | |
210 | { | |
211 | struct mt_device *td = hid_get_drvdata(hdev); | |
212 | struct mt_class *cls = td->mtclass; | |
4875ac11 RN |
213 | __s32 quirks = cls->quirks; |
214 | ||
5519cab4 BT |
215 | switch (usage->hid & HID_USAGE_PAGE) { |
216 | ||
217 | case HID_UP_GENDESK: | |
218 | switch (usage->hid) { | |
219 | case HID_GD_X: | |
4875ac11 RN |
220 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
221 | field->logical_maximum = 32760; | |
5519cab4 BT |
222 | hid_map_usage(hi, usage, bit, max, |
223 | EV_ABS, ABS_MT_POSITION_X); | |
224 | set_abs(hi->input, ABS_MT_POSITION_X, field, | |
225 | cls->sn_move); | |
226 | /* touchscreen emulation */ | |
227 | set_abs(hi->input, ABS_X, field, cls->sn_move); | |
228 | td->last_slot_field = usage->hid; | |
2955caed | 229 | td->last_field_index = field->index; |
5519cab4 BT |
230 | return 1; |
231 | case HID_GD_Y: | |
4875ac11 RN |
232 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
233 | field->logical_maximum = 32760; | |
5519cab4 BT |
234 | hid_map_usage(hi, usage, bit, max, |
235 | EV_ABS, ABS_MT_POSITION_Y); | |
236 | set_abs(hi->input, ABS_MT_POSITION_Y, field, | |
237 | cls->sn_move); | |
238 | /* touchscreen emulation */ | |
239 | set_abs(hi->input, ABS_Y, field, cls->sn_move); | |
240 | td->last_slot_field = usage->hid; | |
2955caed | 241 | td->last_field_index = field->index; |
5519cab4 BT |
242 | return 1; |
243 | } | |
244 | return 0; | |
245 | ||
246 | case HID_UP_DIGITIZER: | |
247 | switch (usage->hid) { | |
248 | case HID_DG_INRANGE: | |
249 | td->last_slot_field = usage->hid; | |
2955caed | 250 | td->last_field_index = field->index; |
5519cab4 BT |
251 | return 1; |
252 | case HID_DG_CONFIDENCE: | |
253 | td->last_slot_field = usage->hid; | |
2955caed | 254 | td->last_field_index = field->index; |
5519cab4 BT |
255 | return 1; |
256 | case HID_DG_TIPSWITCH: | |
257 | hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); | |
258 | input_set_capability(hi->input, EV_KEY, BTN_TOUCH); | |
259 | td->last_slot_field = usage->hid; | |
2955caed | 260 | td->last_field_index = field->index; |
5519cab4 BT |
261 | return 1; |
262 | case HID_DG_CONTACTID: | |
9498f954 | 263 | input_mt_init_slots(hi->input, td->maxcontacts); |
5519cab4 | 264 | td->last_slot_field = usage->hid; |
2955caed | 265 | td->last_field_index = field->index; |
5519cab4 BT |
266 | return 1; |
267 | case HID_DG_WIDTH: | |
268 | hid_map_usage(hi, usage, bit, max, | |
269 | EV_ABS, ABS_MT_TOUCH_MAJOR); | |
f786bba4 BT |
270 | set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, |
271 | cls->sn_width); | |
5519cab4 | 272 | td->last_slot_field = usage->hid; |
2955caed | 273 | td->last_field_index = field->index; |
5519cab4 BT |
274 | return 1; |
275 | case HID_DG_HEIGHT: | |
276 | hid_map_usage(hi, usage, bit, max, | |
277 | EV_ABS, ABS_MT_TOUCH_MINOR); | |
f786bba4 BT |
278 | set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, |
279 | cls->sn_height); | |
1e648a13 BT |
280 | input_set_abs_params(hi->input, |
281 | ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
5519cab4 | 282 | td->last_slot_field = usage->hid; |
2955caed | 283 | td->last_field_index = field->index; |
5519cab4 BT |
284 | return 1; |
285 | case HID_DG_TIPPRESSURE: | |
4875ac11 RN |
286 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
287 | field->logical_minimum = 0; | |
5519cab4 BT |
288 | hid_map_usage(hi, usage, bit, max, |
289 | EV_ABS, ABS_MT_PRESSURE); | |
290 | set_abs(hi->input, ABS_MT_PRESSURE, field, | |
291 | cls->sn_pressure); | |
292 | /* touchscreen emulation */ | |
293 | set_abs(hi->input, ABS_PRESSURE, field, | |
294 | cls->sn_pressure); | |
295 | td->last_slot_field = usage->hid; | |
2955caed | 296 | td->last_field_index = field->index; |
5519cab4 BT |
297 | return 1; |
298 | case HID_DG_CONTACTCOUNT: | |
2955caed | 299 | td->last_field_index = field->index; |
5519cab4 BT |
300 | return 1; |
301 | case HID_DG_CONTACTMAX: | |
302 | /* we don't set td->last_slot_field as contactcount and | |
303 | * contact max are global to the report */ | |
2955caed | 304 | td->last_field_index = field->index; |
5519cab4 BT |
305 | return -1; |
306 | } | |
307 | /* let hid-input decide for the others */ | |
308 | return 0; | |
309 | ||
310 | case 0xff000000: | |
311 | /* we do not want to map these: no input-oriented meaning */ | |
312 | return -1; | |
313 | } | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
319 | struct hid_field *field, struct hid_usage *usage, | |
320 | unsigned long **bit, int *max) | |
321 | { | |
322 | if (usage->type == EV_KEY || usage->type == EV_ABS) | |
323 | set_bit(usage->type, hi->input->evbit); | |
324 | ||
325 | return -1; | |
326 | } | |
327 | ||
328 | static int mt_compute_slot(struct mt_device *td) | |
329 | { | |
2d93666e | 330 | __s32 quirks = td->mtclass->quirks; |
5519cab4 | 331 | |
2d93666e BT |
332 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) |
333 | return td->curdata.contactid; | |
5519cab4 | 334 | |
2d93666e | 335 | if (quirks & MT_QUIRK_CYPRESS) |
a3b5e577 BT |
336 | return cypress_compute_slot(td); |
337 | ||
2d93666e BT |
338 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) |
339 | return td->num_received; | |
5572da08 | 340 | |
4a6ee685 BT |
341 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) |
342 | return td->curdata.contactid - 1; | |
343 | ||
5519cab4 BT |
344 | return find_slot_from_contactid(td); |
345 | } | |
346 | ||
347 | /* | |
348 | * this function is called when a whole contact has been processed, | |
349 | * so that it can assign it to a slot and store the data there | |
350 | */ | |
351 | static void mt_complete_slot(struct mt_device *td) | |
352 | { | |
2d93666e | 353 | td->curdata.seen_in_this_frame = true; |
5519cab4 | 354 | if (td->curvalid) { |
5519cab4 BT |
355 | int slotnum = mt_compute_slot(td); |
356 | ||
9498f954 | 357 | if (slotnum >= 0 && slotnum < td->maxcontacts) |
2d93666e | 358 | td->slots[slotnum] = td->curdata; |
5519cab4 BT |
359 | } |
360 | td->num_received++; | |
361 | } | |
362 | ||
363 | ||
364 | /* | |
365 | * this function is called when a whole packet has been received and processed, | |
366 | * so that it can decide what to send to the input layer. | |
367 | */ | |
368 | static void mt_emit_event(struct mt_device *td, struct input_dev *input) | |
369 | { | |
370 | int i; | |
371 | ||
9498f954 | 372 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
373 | struct mt_slot *s = &(td->slots[i]); |
374 | if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && | |
375 | !s->seen_in_this_frame) { | |
5519cab4 BT |
376 | s->touch_state = false; |
377 | } | |
378 | ||
379 | input_mt_slot(input, i); | |
380 | input_mt_report_slot_state(input, MT_TOOL_FINGER, | |
381 | s->touch_state); | |
2d93666e | 382 | if (s->touch_state) { |
f786bba4 BT |
383 | /* this finger is on the screen */ |
384 | int wide = (s->w > s->h); | |
385 | /* divided by two to match visual scale of touch */ | |
386 | int major = max(s->w, s->h) >> 1; | |
387 | int minor = min(s->w, s->h) >> 1; | |
388 | ||
2d93666e BT |
389 | input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); |
390 | input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); | |
f786bba4 | 391 | input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); |
2d93666e | 392 | input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); |
f786bba4 BT |
393 | input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); |
394 | input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
2d93666e | 395 | } |
5519cab4 BT |
396 | s->seen_in_this_frame = false; |
397 | ||
398 | } | |
399 | ||
400 | input_mt_report_pointer_emulation(input, true); | |
401 | input_sync(input); | |
402 | td->num_received = 0; | |
403 | } | |
404 | ||
405 | ||
406 | ||
407 | static int mt_event(struct hid_device *hid, struct hid_field *field, | |
408 | struct hid_usage *usage, __s32 value) | |
409 | { | |
410 | struct mt_device *td = hid_get_drvdata(hid); | |
2d93666e | 411 | __s32 quirks = td->mtclass->quirks; |
5519cab4 | 412 | |
9498f954 | 413 | if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { |
5519cab4 BT |
414 | switch (usage->hid) { |
415 | case HID_DG_INRANGE: | |
2d93666e BT |
416 | if (quirks & MT_QUIRK_VALID_IS_INRANGE) |
417 | td->curvalid = value; | |
5519cab4 BT |
418 | break; |
419 | case HID_DG_TIPSWITCH: | |
2d93666e BT |
420 | if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) |
421 | td->curvalid = value; | |
5519cab4 BT |
422 | td->curdata.touch_state = value; |
423 | break; | |
424 | case HID_DG_CONFIDENCE: | |
2d93666e BT |
425 | if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) |
426 | td->curvalid = value; | |
5519cab4 BT |
427 | break; |
428 | case HID_DG_CONTACTID: | |
429 | td->curdata.contactid = value; | |
430 | break; | |
431 | case HID_DG_TIPPRESSURE: | |
432 | td->curdata.p = value; | |
433 | break; | |
434 | case HID_GD_X: | |
435 | td->curdata.x = value; | |
436 | break; | |
437 | case HID_GD_Y: | |
438 | td->curdata.y = value; | |
439 | break; | |
440 | case HID_DG_WIDTH: | |
441 | td->curdata.w = value; | |
442 | break; | |
443 | case HID_DG_HEIGHT: | |
444 | td->curdata.h = value; | |
445 | break; | |
446 | case HID_DG_CONTACTCOUNT: | |
447 | /* | |
2d93666e BT |
448 | * Includes multi-packet support where subsequent |
449 | * packets are sent with zero contactcount. | |
5519cab4 BT |
450 | */ |
451 | if (value) | |
2d93666e | 452 | td->num_expected = value; |
5519cab4 BT |
453 | break; |
454 | ||
455 | default: | |
456 | /* fallback to the generic hidinput handling */ | |
457 | return 0; | |
458 | } | |
5519cab4 | 459 | |
f153fc39 | 460 | if (usage->hid == td->last_slot_field) { |
2d93666e | 461 | mt_complete_slot(td); |
f153fc39 | 462 | } |
2d93666e BT |
463 | |
464 | if (field->index == td->last_field_index | |
465 | && td->num_received >= td->num_expected) | |
466 | mt_emit_event(td, field->hidinput->input); | |
5519cab4 | 467 | |
2d93666e | 468 | } |
5519cab4 BT |
469 | |
470 | /* we have handled the hidinput part, now remains hiddev */ | |
471 | if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) | |
472 | hid->hiddev_hid_event(hid, field, usage, value); | |
473 | ||
474 | return 1; | |
475 | } | |
476 | ||
477 | static void mt_set_input_mode(struct hid_device *hdev) | |
478 | { | |
479 | struct mt_device *td = hid_get_drvdata(hdev); | |
480 | struct hid_report *r; | |
481 | struct hid_report_enum *re; | |
482 | ||
483 | if (td->inputmode < 0) | |
484 | return; | |
485 | ||
486 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); | |
487 | r = re->report_id_hash[td->inputmode]; | |
488 | if (r) { | |
489 | r->field[0]->value[0] = 0x02; | |
490 | usbhid_submit_report(hdev, r, USB_DIR_OUT); | |
491 | } | |
492 | } | |
493 | ||
494 | static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
495 | { | |
2d93666e | 496 | int ret, i; |
5519cab4 | 497 | struct mt_device *td; |
2d93666e BT |
498 | struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ |
499 | ||
500 | for (i = 0; mt_classes[i].name ; i++) { | |
501 | if (id->driver_data == mt_classes[i].name) { | |
502 | mtclass = &(mt_classes[i]); | |
503 | break; | |
504 | } | |
505 | } | |
5519cab4 BT |
506 | |
507 | /* This allows the driver to correctly support devices | |
508 | * that emit events over several HID messages. | |
509 | */ | |
510 | hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; | |
511 | ||
9498f954 | 512 | td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); |
5519cab4 BT |
513 | if (!td) { |
514 | dev_err(&hdev->dev, "cannot allocate multitouch data\n"); | |
515 | return -ENOMEM; | |
516 | } | |
517 | td->mtclass = mtclass; | |
518 | td->inputmode = -1; | |
519 | hid_set_drvdata(hdev, td); | |
520 | ||
521 | ret = hid_parse(hdev); | |
522 | if (ret != 0) | |
523 | goto fail; | |
524 | ||
525 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
2d93666e | 526 | if (ret) |
5519cab4 BT |
527 | goto fail; |
528 | ||
9498f954 BT |
529 | if (!td->maxcontacts) |
530 | td->maxcontacts = MT_DEFAULT_MAXCONTACT; | |
531 | ||
532 | td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), | |
533 | GFP_KERNEL); | |
534 | if (!td->slots) { | |
535 | dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); | |
536 | hid_hw_stop(hdev); | |
537 | ret = -ENOMEM; | |
538 | goto fail; | |
539 | } | |
540 | ||
5519cab4 BT |
541 | mt_set_input_mode(hdev); |
542 | ||
543 | return 0; | |
544 | ||
545 | fail: | |
546 | kfree(td); | |
547 | return ret; | |
548 | } | |
549 | ||
550 | #ifdef CONFIG_PM | |
551 | static int mt_reset_resume(struct hid_device *hdev) | |
552 | { | |
553 | mt_set_input_mode(hdev); | |
554 | return 0; | |
555 | } | |
556 | #endif | |
557 | ||
558 | static void mt_remove(struct hid_device *hdev) | |
559 | { | |
560 | struct mt_device *td = hid_get_drvdata(hdev); | |
561 | hid_hw_stop(hdev); | |
9498f954 | 562 | kfree(td->slots); |
5519cab4 BT |
563 | kfree(td); |
564 | hid_set_drvdata(hdev, NULL); | |
565 | } | |
566 | ||
567 | static const struct hid_device_id mt_devices[] = { | |
568 | ||
f786bba4 BT |
569 | /* 3M panels */ |
570 | { .driver_data = MT_CLS_3M, | |
571 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
572 | USB_DEVICE_ID_3M1968) }, | |
573 | { .driver_data = MT_CLS_3M, | |
574 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
575 | USB_DEVICE_ID_3M2256) }, | |
576 | ||
e6aac342 BT |
577 | /* ActionStar panels */ |
578 | { .driver_data = MT_CLS_DEFAULT, | |
579 | HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, | |
580 | USB_DEVICE_ID_ACTIONSTAR_1011) }, | |
581 | ||
a841b62c BT |
582 | /* Cando panels */ |
583 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
584 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
585 | USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, | |
586 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
587 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
588 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, | |
589 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
590 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
591 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, | |
592 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
593 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
594 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, | |
595 | ||
942fd422 AZ |
596 | /* Chunghwa Telecom touch panels */ |
597 | { .driver_data = MT_CLS_DEFAULT, | |
598 | HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, | |
599 | USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, | |
600 | ||
79603dc9 BT |
601 | /* CVTouch panels */ |
602 | { .driver_data = MT_CLS_DEFAULT, | |
603 | HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, | |
604 | USB_DEVICE_ID_CVTOUCH_SCREEN) }, | |
605 | ||
a3b5e577 BT |
606 | /* Cypress panel */ |
607 | { .driver_data = MT_CLS_CYPRESS, | |
608 | HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, | |
609 | USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, | |
610 | ||
22408283 BT |
611 | /* eGalax devices (resistive) */ |
612 | { .driver_data = MT_CLS_EGALAX, | |
613 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
614 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) }, | |
615 | { .driver_data = MT_CLS_EGALAX, | |
616 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
617 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) }, | |
618 | ||
619 | /* eGalax devices (capacitive) */ | |
620 | { .driver_data = MT_CLS_EGALAX, | |
621 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
622 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) }, | |
623 | { .driver_data = MT_CLS_EGALAX, | |
624 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
625 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) }, | |
626 | { .driver_data = MT_CLS_EGALAX, | |
627 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
628 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) }, | |
629 | ||
c04abeef BT |
630 | /* Elo TouchSystems IntelliTouch Plus panel */ |
631 | { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, | |
632 | HID_USB_DEVICE(USB_VENDOR_ID_ELO, | |
633 | USB_DEVICE_ID_ELO_TS2515) }, | |
634 | ||
5572da08 | 635 | /* GeneralTouch panel */ |
1e9cf35b | 636 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
5572da08 BT |
637 | HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, |
638 | USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, | |
639 | ||
ee0fbd14 BT |
640 | /* GoodTouch panels */ |
641 | { .driver_data = MT_CLS_DEFAULT, | |
642 | HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, | |
643 | USB_DEVICE_ID_GOODTOUCH_000f) }, | |
644 | ||
4e61f0d7 AZ |
645 | /* Ilitek dual touch panel */ |
646 | { .driver_data = MT_CLS_DEFAULT, | |
647 | HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, | |
648 | USB_DEVICE_ID_ILITEK_MULTITOUCH) }, | |
649 | ||
4dfcced8 BT |
650 | /* IRTOUCH panels */ |
651 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, | |
652 | HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, | |
653 | USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, | |
654 | ||
df167c4a BT |
655 | /* Lumio panels */ |
656 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
657 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
658 | USB_DEVICE_ID_CRYSTALTOUCH) }, | |
659 | ||
4a6ee685 BT |
660 | /* MosArt panels */ |
661 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
662 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
663 | USB_DEVICE_ID_ASUS_T91MT)}, | |
664 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
665 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
666 | USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, | |
667 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
668 | HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, | |
669 | USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, | |
670 | ||
6ab3a9a6 JS |
671 | /* PenMount panels */ |
672 | { .driver_data = MT_CLS_CONFIDENCE, | |
673 | HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, | |
674 | USB_DEVICE_ID_PENMOUNT_PCI) }, | |
675 | ||
5519cab4 | 676 | /* PixCir-based panels */ |
1e9cf35b | 677 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
678 | HID_USB_DEVICE(USB_VENDOR_ID_HANVON, |
679 | USB_DEVICE_ID_HANVON_MULTITOUCH) }, | |
1e9cf35b | 680 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
681 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, |
682 | USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, | |
683 | ||
043b403a | 684 | /* Stantum panels */ |
bf5af9b5 | 685 | { .driver_data = MT_CLS_CONFIDENCE, |
043b403a BT |
686 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, |
687 | USB_DEVICE_ID_MTP)}, | |
bf5af9b5 | 688 | { .driver_data = MT_CLS_CONFIDENCE, |
043b403a BT |
689 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, |
690 | USB_DEVICE_ID_MTP_STM)}, | |
bf5af9b5 | 691 | { .driver_data = MT_CLS_CONFIDENCE, |
043b403a BT |
692 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, |
693 | USB_DEVICE_ID_MTP_SITRONIX)}, | |
694 | ||
5e74e56d BT |
695 | /* Touch International panels */ |
696 | { .driver_data = MT_CLS_DEFAULT, | |
697 | HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, | |
698 | USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, | |
699 | ||
617b64f9 BT |
700 | /* Unitec panels */ |
701 | { .driver_data = MT_CLS_DEFAULT, | |
702 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
703 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, | |
704 | { .driver_data = MT_CLS_DEFAULT, | |
705 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
706 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, | |
707 | ||
5519cab4 BT |
708 | { } |
709 | }; | |
710 | MODULE_DEVICE_TABLE(hid, mt_devices); | |
711 | ||
712 | static const struct hid_usage_id mt_grabbed_usages[] = { | |
713 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, | |
714 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} | |
715 | }; | |
716 | ||
717 | static struct hid_driver mt_driver = { | |
718 | .name = "hid-multitouch", | |
719 | .id_table = mt_devices, | |
720 | .probe = mt_probe, | |
721 | .remove = mt_remove, | |
722 | .input_mapping = mt_input_mapping, | |
723 | .input_mapped = mt_input_mapped, | |
724 | .feature_mapping = mt_feature_mapping, | |
725 | .usage_table = mt_grabbed_usages, | |
726 | .event = mt_event, | |
727 | #ifdef CONFIG_PM | |
728 | .reset_resume = mt_reset_resume, | |
729 | #endif | |
730 | }; | |
731 | ||
732 | static int __init mt_init(void) | |
733 | { | |
734 | return hid_register_driver(&mt_driver); | |
735 | } | |
736 | ||
737 | static void __exit mt_exit(void) | |
738 | { | |
739 | hid_unregister_driver(&mt_driver); | |
740 | } | |
741 | ||
742 | module_init(mt_init); | |
743 | module_exit(mt_exit); |