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