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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 */ | |
b84bd27f | 67 | int last_mt_collection; /* last known mt-related collection */ |
5519cab4 BT |
68 | __s8 inputmode; /* InputMode HID feature, -1 if non-existent */ |
69 | __u8 num_received; /* how many contacts we received */ | |
70 | __u8 num_expected; /* expected last contact index */ | |
9498f954 | 71 | __u8 maxcontacts; |
5519cab4 | 72 | bool curvalid; /* is the current contact valid? */ |
9498f954 | 73 | struct mt_slot *slots; |
5519cab4 BT |
74 | }; |
75 | ||
76 | struct mt_class { | |
2d93666e | 77 | __s32 name; /* MT_CLS */ |
5519cab4 BT |
78 | __s32 quirks; |
79 | __s32 sn_move; /* Signal/noise ratio for move events */ | |
f786bba4 BT |
80 | __s32 sn_width; /* Signal/noise ratio for width events */ |
81 | __s32 sn_height; /* Signal/noise ratio for height events */ | |
5519cab4 BT |
82 | __s32 sn_pressure; /* Signal/noise ratio for pressure events */ |
83 | __u8 maxcontacts; | |
84 | }; | |
85 | ||
86 | /* classes of device behavior */ | |
22408283 BT |
87 | #define MT_CLS_DEFAULT 0x0001 |
88 | ||
89 | #define MT_CLS_CONFIDENCE 0x0002 | |
90 | #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0003 | |
91 | #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0004 | |
92 | #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0005 | |
93 | #define MT_CLS_DUAL_NSMU_CONTACTID 0x0006 | |
94 | ||
95 | /* vendor specific classes */ | |
96 | #define MT_CLS_3M 0x0101 | |
97 | #define MT_CLS_CYPRESS 0x0102 | |
98 | #define MT_CLS_EGALAX 0x0103 | |
5519cab4 | 99 | |
9498f954 BT |
100 | #define MT_DEFAULT_MAXCONTACT 10 |
101 | ||
5519cab4 BT |
102 | /* |
103 | * these device-dependent functions determine what slot corresponds | |
104 | * to a valid contact that was just read. | |
105 | */ | |
106 | ||
a3b5e577 BT |
107 | static int cypress_compute_slot(struct mt_device *td) |
108 | { | |
109 | if (td->curdata.contactid != 0 || td->num_received == 0) | |
110 | return td->curdata.contactid; | |
111 | else | |
112 | return -1; | |
113 | } | |
114 | ||
5519cab4 BT |
115 | static int find_slot_from_contactid(struct mt_device *td) |
116 | { | |
117 | int i; | |
9498f954 | 118 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
119 | if (td->slots[i].contactid == td->curdata.contactid && |
120 | td->slots[i].touch_state) | |
121 | return i; | |
122 | } | |
9498f954 | 123 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
124 | if (!td->slots[i].seen_in_this_frame && |
125 | !td->slots[i].touch_state) | |
126 | return i; | |
127 | } | |
5519cab4 BT |
128 | /* should not occurs. If this happens that means |
129 | * that the device sent more touches that it says | |
130 | * in the report descriptor. It is ignored then. */ | |
2d93666e | 131 | return -1; |
5519cab4 BT |
132 | } |
133 | ||
134 | struct mt_class mt_classes[] = { | |
2d93666e | 135 | { .name = MT_CLS_DEFAULT, |
9498f954 | 136 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, |
22408283 BT |
137 | { .name = MT_CLS_CONFIDENCE, |
138 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, | |
139 | { .name = MT_CLS_CONFIDENCE_MINUS_ONE, | |
140 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
141 | MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, | |
1e9cf35b | 142 | { .name = MT_CLS_DUAL_INRANGE_CONTACTID, |
2d93666e BT |
143 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
144 | MT_QUIRK_SLOT_IS_CONTACTID, | |
145 | .maxcontacts = 2 }, | |
1e9cf35b | 146 | { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
2d93666e BT |
147 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
148 | MT_QUIRK_SLOT_IS_CONTACTNUMBER, | |
149 | .maxcontacts = 2 }, | |
22408283 BT |
150 | { .name = MT_CLS_DUAL_NSMU_CONTACTID, |
151 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
152 | MT_QUIRK_SLOT_IS_CONTACTID, | |
153 | .maxcontacts = 2 }, | |
154 | ||
155 | /* | |
156 | * vendor specific classes | |
157 | */ | |
158 | { .name = MT_CLS_3M, | |
159 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
160 | MT_QUIRK_SLOT_IS_CONTACTID, | |
161 | .sn_move = 2048, | |
162 | .sn_width = 128, | |
163 | .sn_height = 128 }, | |
2d93666e BT |
164 | { .name = MT_CLS_CYPRESS, |
165 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
166 | MT_QUIRK_CYPRESS, | |
167 | .maxcontacts = 10 }, | |
4875ac11 RN |
168 | { .name = MT_CLS_EGALAX, |
169 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
170 | MT_QUIRK_VALID_IS_INRANGE | | |
171 | MT_QUIRK_EGALAX_XYZ_FIXUP, | |
172 | .maxcontacts = 2, | |
173 | .sn_move = 4096, | |
174 | .sn_pressure = 32, | |
175 | }, | |
043b403a | 176 | |
2d93666e | 177 | { } |
5519cab4 BT |
178 | }; |
179 | ||
f635bd11 | 180 | static void mt_feature_mapping(struct hid_device *hdev, |
5519cab4 BT |
181 | struct hid_field *field, struct hid_usage *usage) |
182 | { | |
9498f954 BT |
183 | struct mt_device *td = hid_get_drvdata(hdev); |
184 | ||
185 | switch (usage->hid) { | |
186 | case HID_DG_INPUTMODE: | |
5519cab4 | 187 | td->inputmode = field->report->id; |
9498f954 BT |
188 | break; |
189 | case HID_DG_CONTACTMAX: | |
190 | td->maxcontacts = field->value[0]; | |
191 | if (td->mtclass->maxcontacts) | |
192 | /* check if the maxcontacts is given by the class */ | |
193 | td->maxcontacts = td->mtclass->maxcontacts; | |
194 | ||
195 | break; | |
5519cab4 BT |
196 | } |
197 | } | |
198 | ||
199 | static void set_abs(struct input_dev *input, unsigned int code, | |
200 | struct hid_field *field, int snratio) | |
201 | { | |
202 | int fmin = field->logical_minimum; | |
203 | int fmax = field->logical_maximum; | |
204 | int fuzz = snratio ? (fmax - fmin) / snratio : 0; | |
205 | input_set_abs_params(input, code, fmin, fmax, fuzz, 0); | |
206 | } | |
207 | ||
208 | static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
209 | struct hid_field *field, struct hid_usage *usage, | |
210 | unsigned long **bit, int *max) | |
211 | { | |
212 | struct mt_device *td = hid_get_drvdata(hdev); | |
213 | struct mt_class *cls = td->mtclass; | |
4875ac11 RN |
214 | __s32 quirks = cls->quirks; |
215 | ||
658d4aed JB |
216 | /* Only map fields from TouchScreen or TouchPad collections. |
217 | * We need to ignore fields that belong to other collections | |
218 | * such as Mouse that might have the same GenericDesktop usages. */ | |
219 | if (field->application == HID_DG_TOUCHSCREEN) | |
220 | set_bit(INPUT_PROP_DIRECT, hi->input->propbit); | |
221 | else if (field->application == HID_DG_TOUCHPAD) | |
222 | set_bit(INPUT_PROP_POINTER, hi->input->propbit); | |
223 | else | |
224 | return 0; | |
225 | ||
5519cab4 BT |
226 | switch (usage->hid & HID_USAGE_PAGE) { |
227 | ||
228 | case HID_UP_GENDESK: | |
229 | switch (usage->hid) { | |
230 | case HID_GD_X: | |
4875ac11 RN |
231 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
232 | field->logical_maximum = 32760; | |
5519cab4 BT |
233 | hid_map_usage(hi, usage, bit, max, |
234 | EV_ABS, ABS_MT_POSITION_X); | |
235 | set_abs(hi->input, ABS_MT_POSITION_X, field, | |
236 | cls->sn_move); | |
237 | /* touchscreen emulation */ | |
238 | set_abs(hi->input, ABS_X, field, cls->sn_move); | |
b84bd27f BT |
239 | if (td->last_mt_collection == usage->collection_index) { |
240 | td->last_slot_field = usage->hid; | |
241 | td->last_field_index = field->index; | |
242 | } | |
5519cab4 BT |
243 | return 1; |
244 | case HID_GD_Y: | |
4875ac11 RN |
245 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
246 | field->logical_maximum = 32760; | |
5519cab4 BT |
247 | hid_map_usage(hi, usage, bit, max, |
248 | EV_ABS, ABS_MT_POSITION_Y); | |
249 | set_abs(hi->input, ABS_MT_POSITION_Y, field, | |
250 | cls->sn_move); | |
251 | /* touchscreen emulation */ | |
252 | set_abs(hi->input, ABS_Y, field, cls->sn_move); | |
b84bd27f BT |
253 | if (td->last_mt_collection == usage->collection_index) { |
254 | td->last_slot_field = usage->hid; | |
255 | td->last_field_index = field->index; | |
256 | } | |
5519cab4 BT |
257 | return 1; |
258 | } | |
259 | return 0; | |
260 | ||
261 | case HID_UP_DIGITIZER: | |
262 | switch (usage->hid) { | |
263 | case HID_DG_INRANGE: | |
b84bd27f BT |
264 | if (td->last_mt_collection == usage->collection_index) { |
265 | td->last_slot_field = usage->hid; | |
266 | td->last_field_index = field->index; | |
267 | } | |
5519cab4 BT |
268 | return 1; |
269 | case HID_DG_CONFIDENCE: | |
b84bd27f BT |
270 | if (td->last_mt_collection == usage->collection_index) { |
271 | td->last_slot_field = usage->hid; | |
272 | td->last_field_index = field->index; | |
273 | } | |
5519cab4 BT |
274 | return 1; |
275 | case HID_DG_TIPSWITCH: | |
276 | hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); | |
277 | input_set_capability(hi->input, EV_KEY, BTN_TOUCH); | |
b84bd27f BT |
278 | if (td->last_mt_collection == usage->collection_index) { |
279 | td->last_slot_field = usage->hid; | |
280 | td->last_field_index = field->index; | |
281 | } | |
5519cab4 BT |
282 | return 1; |
283 | case HID_DG_CONTACTID: | |
50bc03ab BT |
284 | if (!td->maxcontacts) |
285 | td->maxcontacts = MT_DEFAULT_MAXCONTACT; | |
9498f954 | 286 | input_mt_init_slots(hi->input, td->maxcontacts); |
5519cab4 | 287 | td->last_slot_field = usage->hid; |
2955caed | 288 | td->last_field_index = field->index; |
b84bd27f | 289 | td->last_mt_collection = usage->collection_index; |
5519cab4 BT |
290 | return 1; |
291 | case HID_DG_WIDTH: | |
292 | hid_map_usage(hi, usage, bit, max, | |
293 | EV_ABS, ABS_MT_TOUCH_MAJOR); | |
f786bba4 BT |
294 | set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, |
295 | cls->sn_width); | |
b84bd27f BT |
296 | if (td->last_mt_collection == usage->collection_index) { |
297 | td->last_slot_field = usage->hid; | |
298 | td->last_field_index = field->index; | |
299 | } | |
5519cab4 BT |
300 | return 1; |
301 | case HID_DG_HEIGHT: | |
302 | hid_map_usage(hi, usage, bit, max, | |
303 | EV_ABS, ABS_MT_TOUCH_MINOR); | |
f786bba4 BT |
304 | set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, |
305 | cls->sn_height); | |
1e648a13 BT |
306 | input_set_abs_params(hi->input, |
307 | ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
b84bd27f BT |
308 | if (td->last_mt_collection == usage->collection_index) { |
309 | td->last_slot_field = usage->hid; | |
310 | td->last_field_index = field->index; | |
311 | } | |
5519cab4 BT |
312 | return 1; |
313 | case HID_DG_TIPPRESSURE: | |
4875ac11 RN |
314 | if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP) |
315 | field->logical_minimum = 0; | |
5519cab4 BT |
316 | hid_map_usage(hi, usage, bit, max, |
317 | EV_ABS, ABS_MT_PRESSURE); | |
318 | set_abs(hi->input, ABS_MT_PRESSURE, field, | |
319 | cls->sn_pressure); | |
320 | /* touchscreen emulation */ | |
321 | set_abs(hi->input, ABS_PRESSURE, field, | |
322 | cls->sn_pressure); | |
b84bd27f BT |
323 | if (td->last_mt_collection == usage->collection_index) { |
324 | td->last_slot_field = usage->hid; | |
325 | td->last_field_index = field->index; | |
326 | } | |
5519cab4 BT |
327 | return 1; |
328 | case HID_DG_CONTACTCOUNT: | |
b84bd27f BT |
329 | if (td->last_mt_collection == usage->collection_index) |
330 | td->last_field_index = field->index; | |
5519cab4 BT |
331 | return 1; |
332 | case HID_DG_CONTACTMAX: | |
333 | /* we don't set td->last_slot_field as contactcount and | |
334 | * contact max are global to the report */ | |
b84bd27f BT |
335 | if (td->last_mt_collection == usage->collection_index) |
336 | td->last_field_index = field->index; | |
5519cab4 BT |
337 | return -1; |
338 | } | |
339 | /* let hid-input decide for the others */ | |
340 | return 0; | |
341 | ||
342 | case 0xff000000: | |
343 | /* we do not want to map these: no input-oriented meaning */ | |
344 | return -1; | |
345 | } | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
351 | struct hid_field *field, struct hid_usage *usage, | |
352 | unsigned long **bit, int *max) | |
353 | { | |
354 | if (usage->type == EV_KEY || usage->type == EV_ABS) | |
355 | set_bit(usage->type, hi->input->evbit); | |
356 | ||
357 | return -1; | |
358 | } | |
359 | ||
360 | static int mt_compute_slot(struct mt_device *td) | |
361 | { | |
2d93666e | 362 | __s32 quirks = td->mtclass->quirks; |
5519cab4 | 363 | |
2d93666e BT |
364 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) |
365 | return td->curdata.contactid; | |
5519cab4 | 366 | |
2d93666e | 367 | if (quirks & MT_QUIRK_CYPRESS) |
a3b5e577 BT |
368 | return cypress_compute_slot(td); |
369 | ||
2d93666e BT |
370 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) |
371 | return td->num_received; | |
5572da08 | 372 | |
4a6ee685 BT |
373 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) |
374 | return td->curdata.contactid - 1; | |
375 | ||
5519cab4 BT |
376 | return find_slot_from_contactid(td); |
377 | } | |
378 | ||
379 | /* | |
380 | * this function is called when a whole contact has been processed, | |
381 | * so that it can assign it to a slot and store the data there | |
382 | */ | |
383 | static void mt_complete_slot(struct mt_device *td) | |
384 | { | |
2d93666e | 385 | td->curdata.seen_in_this_frame = true; |
5519cab4 | 386 | if (td->curvalid) { |
5519cab4 BT |
387 | int slotnum = mt_compute_slot(td); |
388 | ||
9498f954 | 389 | if (slotnum >= 0 && slotnum < td->maxcontacts) |
2d93666e | 390 | td->slots[slotnum] = td->curdata; |
5519cab4 BT |
391 | } |
392 | td->num_received++; | |
393 | } | |
394 | ||
395 | ||
396 | /* | |
397 | * this function is called when a whole packet has been received and processed, | |
398 | * so that it can decide what to send to the input layer. | |
399 | */ | |
400 | static void mt_emit_event(struct mt_device *td, struct input_dev *input) | |
401 | { | |
402 | int i; | |
403 | ||
9498f954 | 404 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
405 | struct mt_slot *s = &(td->slots[i]); |
406 | if ((td->mtclass->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && | |
407 | !s->seen_in_this_frame) { | |
5519cab4 BT |
408 | s->touch_state = false; |
409 | } | |
410 | ||
411 | input_mt_slot(input, i); | |
412 | input_mt_report_slot_state(input, MT_TOOL_FINGER, | |
413 | s->touch_state); | |
2d93666e | 414 | if (s->touch_state) { |
f786bba4 BT |
415 | /* this finger is on the screen */ |
416 | int wide = (s->w > s->h); | |
417 | /* divided by two to match visual scale of touch */ | |
418 | int major = max(s->w, s->h) >> 1; | |
419 | int minor = min(s->w, s->h) >> 1; | |
420 | ||
2d93666e BT |
421 | input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); |
422 | input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); | |
f786bba4 | 423 | input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); |
2d93666e | 424 | input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); |
f786bba4 BT |
425 | input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); |
426 | input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
2d93666e | 427 | } |
5519cab4 BT |
428 | s->seen_in_this_frame = false; |
429 | ||
430 | } | |
431 | ||
432 | input_mt_report_pointer_emulation(input, true); | |
433 | input_sync(input); | |
434 | td->num_received = 0; | |
435 | } | |
436 | ||
437 | ||
438 | ||
439 | static int mt_event(struct hid_device *hid, struct hid_field *field, | |
440 | struct hid_usage *usage, __s32 value) | |
441 | { | |
442 | struct mt_device *td = hid_get_drvdata(hid); | |
2d93666e | 443 | __s32 quirks = td->mtclass->quirks; |
5519cab4 | 444 | |
9498f954 | 445 | if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { |
5519cab4 BT |
446 | switch (usage->hid) { |
447 | case HID_DG_INRANGE: | |
2d93666e BT |
448 | if (quirks & MT_QUIRK_VALID_IS_INRANGE) |
449 | td->curvalid = value; | |
5519cab4 BT |
450 | break; |
451 | case HID_DG_TIPSWITCH: | |
2d93666e BT |
452 | if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) |
453 | td->curvalid = value; | |
5519cab4 BT |
454 | td->curdata.touch_state = value; |
455 | break; | |
456 | case HID_DG_CONFIDENCE: | |
2d93666e BT |
457 | if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) |
458 | td->curvalid = value; | |
5519cab4 BT |
459 | break; |
460 | case HID_DG_CONTACTID: | |
461 | td->curdata.contactid = value; | |
462 | break; | |
463 | case HID_DG_TIPPRESSURE: | |
464 | td->curdata.p = value; | |
465 | break; | |
466 | case HID_GD_X: | |
467 | td->curdata.x = value; | |
468 | break; | |
469 | case HID_GD_Y: | |
470 | td->curdata.y = value; | |
471 | break; | |
472 | case HID_DG_WIDTH: | |
473 | td->curdata.w = value; | |
474 | break; | |
475 | case HID_DG_HEIGHT: | |
476 | td->curdata.h = value; | |
477 | break; | |
478 | case HID_DG_CONTACTCOUNT: | |
479 | /* | |
2d93666e BT |
480 | * Includes multi-packet support where subsequent |
481 | * packets are sent with zero contactcount. | |
5519cab4 BT |
482 | */ |
483 | if (value) | |
2d93666e | 484 | td->num_expected = value; |
5519cab4 BT |
485 | break; |
486 | ||
487 | default: | |
488 | /* fallback to the generic hidinput handling */ | |
489 | return 0; | |
490 | } | |
5519cab4 | 491 | |
f153fc39 | 492 | if (usage->hid == td->last_slot_field) { |
2d93666e | 493 | mt_complete_slot(td); |
f153fc39 | 494 | } |
2d93666e BT |
495 | |
496 | if (field->index == td->last_field_index | |
497 | && td->num_received >= td->num_expected) | |
498 | mt_emit_event(td, field->hidinput->input); | |
5519cab4 | 499 | |
2d93666e | 500 | } |
5519cab4 BT |
501 | |
502 | /* we have handled the hidinput part, now remains hiddev */ | |
503 | if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) | |
504 | hid->hiddev_hid_event(hid, field, usage, value); | |
505 | ||
506 | return 1; | |
507 | } | |
508 | ||
509 | static void mt_set_input_mode(struct hid_device *hdev) | |
510 | { | |
511 | struct mt_device *td = hid_get_drvdata(hdev); | |
512 | struct hid_report *r; | |
513 | struct hid_report_enum *re; | |
514 | ||
515 | if (td->inputmode < 0) | |
516 | return; | |
517 | ||
518 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); | |
519 | r = re->report_id_hash[td->inputmode]; | |
520 | if (r) { | |
521 | r->field[0]->value[0] = 0x02; | |
522 | usbhid_submit_report(hdev, r, USB_DIR_OUT); | |
523 | } | |
524 | } | |
525 | ||
526 | static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
527 | { | |
2d93666e | 528 | int ret, i; |
5519cab4 | 529 | struct mt_device *td; |
2d93666e BT |
530 | struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ |
531 | ||
532 | for (i = 0; mt_classes[i].name ; i++) { | |
533 | if (id->driver_data == mt_classes[i].name) { | |
534 | mtclass = &(mt_classes[i]); | |
535 | break; | |
536 | } | |
537 | } | |
5519cab4 BT |
538 | |
539 | /* This allows the driver to correctly support devices | |
540 | * that emit events over several HID messages. | |
541 | */ | |
542 | hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; | |
543 | ||
9498f954 | 544 | td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); |
5519cab4 BT |
545 | if (!td) { |
546 | dev_err(&hdev->dev, "cannot allocate multitouch data\n"); | |
547 | return -ENOMEM; | |
548 | } | |
549 | td->mtclass = mtclass; | |
550 | td->inputmode = -1; | |
b84bd27f | 551 | td->last_mt_collection = -1; |
5519cab4 BT |
552 | hid_set_drvdata(hdev, td); |
553 | ||
554 | ret = hid_parse(hdev); | |
555 | if (ret != 0) | |
556 | goto fail; | |
557 | ||
558 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
2d93666e | 559 | if (ret) |
5519cab4 BT |
560 | goto fail; |
561 | ||
9498f954 BT |
562 | td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), |
563 | GFP_KERNEL); | |
564 | if (!td->slots) { | |
565 | dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); | |
566 | hid_hw_stop(hdev); | |
567 | ret = -ENOMEM; | |
568 | goto fail; | |
569 | } | |
570 | ||
5519cab4 BT |
571 | mt_set_input_mode(hdev); |
572 | ||
573 | return 0; | |
574 | ||
575 | fail: | |
576 | kfree(td); | |
577 | return ret; | |
578 | } | |
579 | ||
580 | #ifdef CONFIG_PM | |
581 | static int mt_reset_resume(struct hid_device *hdev) | |
582 | { | |
583 | mt_set_input_mode(hdev); | |
584 | return 0; | |
585 | } | |
586 | #endif | |
587 | ||
588 | static void mt_remove(struct hid_device *hdev) | |
589 | { | |
590 | struct mt_device *td = hid_get_drvdata(hdev); | |
591 | hid_hw_stop(hdev); | |
9498f954 | 592 | kfree(td->slots); |
5519cab4 BT |
593 | kfree(td); |
594 | hid_set_drvdata(hdev, NULL); | |
595 | } | |
596 | ||
597 | static const struct hid_device_id mt_devices[] = { | |
598 | ||
f786bba4 BT |
599 | /* 3M panels */ |
600 | { .driver_data = MT_CLS_3M, | |
601 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
602 | USB_DEVICE_ID_3M1968) }, | |
603 | { .driver_data = MT_CLS_3M, | |
604 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
605 | USB_DEVICE_ID_3M2256) }, | |
606 | ||
e6aac342 BT |
607 | /* ActionStar panels */ |
608 | { .driver_data = MT_CLS_DEFAULT, | |
609 | HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, | |
610 | USB_DEVICE_ID_ACTIONSTAR_1011) }, | |
611 | ||
a841b62c BT |
612 | /* Cando panels */ |
613 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
614 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
615 | USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, | |
616 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
617 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
618 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, | |
619 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
620 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
621 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, | |
622 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
623 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
624 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, | |
625 | ||
942fd422 AZ |
626 | /* Chunghwa Telecom touch panels */ |
627 | { .driver_data = MT_CLS_DEFAULT, | |
628 | HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, | |
629 | USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, | |
630 | ||
79603dc9 BT |
631 | /* CVTouch panels */ |
632 | { .driver_data = MT_CLS_DEFAULT, | |
633 | HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, | |
634 | USB_DEVICE_ID_CVTOUCH_SCREEN) }, | |
635 | ||
a3b5e577 BT |
636 | /* Cypress panel */ |
637 | { .driver_data = MT_CLS_CYPRESS, | |
638 | HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, | |
639 | USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, | |
640 | ||
22408283 BT |
641 | /* eGalax devices (resistive) */ |
642 | { .driver_data = MT_CLS_EGALAX, | |
643 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
644 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) }, | |
645 | { .driver_data = MT_CLS_EGALAX, | |
646 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
647 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) }, | |
648 | ||
649 | /* eGalax devices (capacitive) */ | |
650 | { .driver_data = MT_CLS_EGALAX, | |
651 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
652 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) }, | |
653 | { .driver_data = MT_CLS_EGALAX, | |
654 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
655 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) }, | |
656 | { .driver_data = MT_CLS_EGALAX, | |
657 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
658 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) }, | |
659 | ||
c04abeef BT |
660 | /* Elo TouchSystems IntelliTouch Plus panel */ |
661 | { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, | |
662 | HID_USB_DEVICE(USB_VENDOR_ID_ELO, | |
663 | USB_DEVICE_ID_ELO_TS2515) }, | |
664 | ||
5572da08 | 665 | /* GeneralTouch panel */ |
1e9cf35b | 666 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
5572da08 BT |
667 | HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, |
668 | USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, | |
669 | ||
ee0fbd14 BT |
670 | /* GoodTouch panels */ |
671 | { .driver_data = MT_CLS_DEFAULT, | |
672 | HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, | |
673 | USB_DEVICE_ID_GOODTOUCH_000f) }, | |
674 | ||
4e61f0d7 AZ |
675 | /* Ilitek dual touch panel */ |
676 | { .driver_data = MT_CLS_DEFAULT, | |
677 | HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, | |
678 | USB_DEVICE_ID_ILITEK_MULTITOUCH) }, | |
679 | ||
4dfcced8 BT |
680 | /* IRTOUCH panels */ |
681 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, | |
682 | HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, | |
683 | USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, | |
684 | ||
c50bb1a4 JB |
685 | /* LG Display panels */ |
686 | { .driver_data = MT_CLS_DEFAULT, | |
687 | HID_USB_DEVICE(USB_VENDOR_ID_LG, | |
688 | USB_DEVICE_ID_LG_MULTITOUCH) }, | |
689 | ||
df167c4a BT |
690 | /* Lumio panels */ |
691 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
692 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
693 | USB_DEVICE_ID_CRYSTALTOUCH) }, | |
c3ead6de BT |
694 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, |
695 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
696 | USB_DEVICE_ID_CRYSTALTOUCH_DUAL) }, | |
df167c4a | 697 | |
4a6ee685 BT |
698 | /* MosArt panels */ |
699 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
700 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
701 | USB_DEVICE_ID_ASUS_T91MT)}, | |
702 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
703 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
704 | USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, | |
705 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
706 | HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, | |
707 | USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, | |
708 | ||
6ab3a9a6 JS |
709 | /* PenMount panels */ |
710 | { .driver_data = MT_CLS_CONFIDENCE, | |
711 | HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, | |
712 | USB_DEVICE_ID_PENMOUNT_PCI) }, | |
713 | ||
5519cab4 | 714 | /* PixCir-based panels */ |
1e9cf35b | 715 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
716 | HID_USB_DEVICE(USB_VENDOR_ID_HANVON, |
717 | USB_DEVICE_ID_HANVON_MULTITOUCH) }, | |
1e9cf35b | 718 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
719 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, |
720 | USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, | |
721 | ||
043b403a | 722 | /* Stantum panels */ |
bf5af9b5 | 723 | { .driver_data = MT_CLS_CONFIDENCE, |
043b403a BT |
724 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, |
725 | USB_DEVICE_ID_MTP)}, | |
bf5af9b5 | 726 | { .driver_data = MT_CLS_CONFIDENCE, |
85a60082 | 727 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, |
043b403a | 728 | USB_DEVICE_ID_MTP_STM)}, |
bf5af9b5 | 729 | { .driver_data = MT_CLS_CONFIDENCE, |
85a60082 | 730 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, |
043b403a BT |
731 | USB_DEVICE_ID_MTP_SITRONIX)}, |
732 | ||
5e74e56d BT |
733 | /* Touch International panels */ |
734 | { .driver_data = MT_CLS_DEFAULT, | |
735 | HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, | |
736 | USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, | |
737 | ||
617b64f9 BT |
738 | /* Unitec panels */ |
739 | { .driver_data = MT_CLS_DEFAULT, | |
740 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
741 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, | |
742 | { .driver_data = MT_CLS_DEFAULT, | |
743 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
744 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, | |
bc8a2a9b | 745 | /* XAT */ |
746 | { .driver_data = MT_CLS_DEFAULT, | |
747 | HID_USB_DEVICE(USB_VENDOR_ID_XAT, | |
748 | USB_DEVICE_ID_XAT_CSR) }, | |
617b64f9 | 749 | |
5519cab4 BT |
750 | { } |
751 | }; | |
752 | MODULE_DEVICE_TABLE(hid, mt_devices); | |
753 | ||
754 | static const struct hid_usage_id mt_grabbed_usages[] = { | |
755 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, | |
756 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} | |
757 | }; | |
758 | ||
759 | static struct hid_driver mt_driver = { | |
760 | .name = "hid-multitouch", | |
761 | .id_table = mt_devices, | |
762 | .probe = mt_probe, | |
763 | .remove = mt_remove, | |
764 | .input_mapping = mt_input_mapping, | |
765 | .input_mapped = mt_input_mapped, | |
766 | .feature_mapping = mt_feature_mapping, | |
767 | .usage_table = mt_grabbed_usages, | |
768 | .event = mt_event, | |
769 | #ifdef CONFIG_PM | |
770 | .reset_resume = mt_reset_resume, | |
771 | #endif | |
772 | }; | |
773 | ||
774 | static int __init mt_init(void) | |
775 | { | |
776 | return hid_register_driver(&mt_driver); | |
777 | } | |
778 | ||
779 | static void __exit mt_exit(void) | |
780 | { | |
781 | hid_unregister_driver(&mt_driver); | |
782 | } | |
783 | ||
784 | module_init(mt_init); | |
785 | module_exit(mt_exit); |