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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) |
a062cc5a SC |
50 | #define MT_QUIRK_ALWAYS_VALID (1 << 4) |
51 | #define MT_QUIRK_VALID_IS_INRANGE (1 << 5) | |
52 | #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6) | |
a062cc5a | 53 | #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) |
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 | ||
eec29e3d BT |
62 | struct mt_class { |
63 | __s32 name; /* MT_CLS */ | |
64 | __s32 quirks; | |
65 | __s32 sn_move; /* Signal/noise ratio for move events */ | |
66 | __s32 sn_width; /* Signal/noise ratio for width events */ | |
67 | __s32 sn_height; /* Signal/noise ratio for height events */ | |
68 | __s32 sn_pressure; /* Signal/noise ratio for pressure events */ | |
69 | __u8 maxcontacts; | |
70 | }; | |
71 | ||
5519cab4 BT |
72 | struct mt_device { |
73 | struct mt_slot curdata; /* placeholder of incoming data */ | |
eec29e3d | 74 | struct mt_class mtclass; /* our mt device class */ |
5519cab4 BT |
75 | unsigned last_field_index; /* last field index of the report */ |
76 | unsigned last_slot_field; /* the last field of a slot */ | |
b84bd27f | 77 | int last_mt_collection; /* last known mt-related collection */ |
5519cab4 BT |
78 | __s8 inputmode; /* InputMode HID feature, -1 if non-existent */ |
79 | __u8 num_received; /* how many contacts we received */ | |
80 | __u8 num_expected; /* expected last contact index */ | |
9498f954 | 81 | __u8 maxcontacts; |
5519cab4 | 82 | bool curvalid; /* is the current contact valid? */ |
9498f954 | 83 | struct mt_slot *slots; |
5519cab4 BT |
84 | }; |
85 | ||
5519cab4 | 86 | /* classes of device behavior */ |
22408283 BT |
87 | #define MT_CLS_DEFAULT 0x0001 |
88 | ||
a062cc5a SC |
89 | #define MT_CLS_SERIAL 0x0002 |
90 | #define MT_CLS_CONFIDENCE 0x0003 | |
91 | #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0004 | |
92 | #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0005 | |
93 | #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0006 | |
94 | #define MT_CLS_DUAL_NSMU_CONTACTID 0x0007 | |
22408283 BT |
95 | |
96 | /* vendor specific classes */ | |
97 | #define MT_CLS_3M 0x0101 | |
98 | #define MT_CLS_CYPRESS 0x0102 | |
99 | #define MT_CLS_EGALAX 0x0103 | |
1b723e8d | 100 | #define MT_CLS_EGALAX_SERIAL 0x0104 |
5519cab4 | 101 | |
9498f954 BT |
102 | #define MT_DEFAULT_MAXCONTACT 10 |
103 | ||
5519cab4 BT |
104 | /* |
105 | * these device-dependent functions determine what slot corresponds | |
106 | * to a valid contact that was just read. | |
107 | */ | |
108 | ||
a3b5e577 BT |
109 | static int cypress_compute_slot(struct mt_device *td) |
110 | { | |
111 | if (td->curdata.contactid != 0 || td->num_received == 0) | |
112 | return td->curdata.contactid; | |
113 | else | |
114 | return -1; | |
115 | } | |
116 | ||
5519cab4 BT |
117 | static int find_slot_from_contactid(struct mt_device *td) |
118 | { | |
119 | int i; | |
9498f954 | 120 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
121 | if (td->slots[i].contactid == td->curdata.contactid && |
122 | td->slots[i].touch_state) | |
123 | return i; | |
124 | } | |
9498f954 | 125 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
126 | if (!td->slots[i].seen_in_this_frame && |
127 | !td->slots[i].touch_state) | |
128 | return i; | |
129 | } | |
5519cab4 BT |
130 | /* should not occurs. If this happens that means |
131 | * that the device sent more touches that it says | |
132 | * in the report descriptor. It is ignored then. */ | |
2d93666e | 133 | return -1; |
5519cab4 BT |
134 | } |
135 | ||
136 | struct mt_class mt_classes[] = { | |
2d93666e | 137 | { .name = MT_CLS_DEFAULT, |
9498f954 | 138 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, |
a062cc5a SC |
139 | { .name = MT_CLS_SERIAL, |
140 | .quirks = MT_QUIRK_ALWAYS_VALID}, | |
22408283 BT |
141 | { .name = MT_CLS_CONFIDENCE, |
142 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, | |
143 | { .name = MT_CLS_CONFIDENCE_MINUS_ONE, | |
144 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
145 | MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, | |
1e9cf35b | 146 | { .name = MT_CLS_DUAL_INRANGE_CONTACTID, |
2d93666e BT |
147 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
148 | MT_QUIRK_SLOT_IS_CONTACTID, | |
149 | .maxcontacts = 2 }, | |
1e9cf35b | 150 | { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
2d93666e BT |
151 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
152 | MT_QUIRK_SLOT_IS_CONTACTNUMBER, | |
153 | .maxcontacts = 2 }, | |
22408283 BT |
154 | { .name = MT_CLS_DUAL_NSMU_CONTACTID, |
155 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
156 | MT_QUIRK_SLOT_IS_CONTACTID, | |
157 | .maxcontacts = 2 }, | |
158 | ||
159 | /* | |
160 | * vendor specific classes | |
161 | */ | |
162 | { .name = MT_CLS_3M, | |
163 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
164 | MT_QUIRK_SLOT_IS_CONTACTID, | |
165 | .sn_move = 2048, | |
166 | .sn_width = 128, | |
167 | .sn_height = 128 }, | |
2d93666e BT |
168 | { .name = MT_CLS_CYPRESS, |
169 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
170 | MT_QUIRK_CYPRESS, | |
171 | .maxcontacts = 10 }, | |
4875ac11 RN |
172 | { .name = MT_CLS_EGALAX, |
173 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
2261bb9f | 174 | MT_QUIRK_VALID_IS_INRANGE, |
4875ac11 RN |
175 | .sn_move = 4096, |
176 | .sn_pressure = 32, | |
177 | }, | |
1b723e8d BT |
178 | { .name = MT_CLS_EGALAX_SERIAL, |
179 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
180 | MT_QUIRK_ALWAYS_VALID, | |
181 | .sn_move = 4096, | |
182 | .sn_pressure = 32, | |
183 | }, | |
043b403a | 184 | |
2d93666e | 185 | { } |
5519cab4 BT |
186 | }; |
187 | ||
eec29e3d BT |
188 | static ssize_t mt_show_quirks(struct device *dev, |
189 | struct device_attribute *attr, | |
190 | char *buf) | |
191 | { | |
192 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); | |
193 | struct mt_device *td = hid_get_drvdata(hdev); | |
194 | ||
195 | return sprintf(buf, "%u\n", td->mtclass.quirks); | |
196 | } | |
197 | ||
198 | static ssize_t mt_set_quirks(struct device *dev, | |
199 | struct device_attribute *attr, | |
200 | const char *buf, size_t count) | |
201 | { | |
202 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); | |
203 | struct mt_device *td = hid_get_drvdata(hdev); | |
204 | ||
205 | unsigned long val; | |
206 | ||
207 | if (kstrtoul(buf, 0, &val)) | |
208 | return -EINVAL; | |
209 | ||
210 | td->mtclass.quirks = val; | |
211 | ||
212 | return count; | |
213 | } | |
214 | ||
215 | static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); | |
216 | ||
217 | static struct attribute *sysfs_attrs[] = { | |
218 | &dev_attr_quirks.attr, | |
219 | NULL | |
220 | }; | |
221 | ||
222 | static struct attribute_group mt_attribute_group = { | |
223 | .attrs = sysfs_attrs | |
224 | }; | |
225 | ||
f635bd11 | 226 | static void mt_feature_mapping(struct hid_device *hdev, |
5519cab4 BT |
227 | struct hid_field *field, struct hid_usage *usage) |
228 | { | |
9498f954 BT |
229 | struct mt_device *td = hid_get_drvdata(hdev); |
230 | ||
231 | switch (usage->hid) { | |
232 | case HID_DG_INPUTMODE: | |
5519cab4 | 233 | td->inputmode = field->report->id; |
9498f954 BT |
234 | break; |
235 | case HID_DG_CONTACTMAX: | |
236 | td->maxcontacts = field->value[0]; | |
eec29e3d | 237 | if (td->mtclass.maxcontacts) |
9498f954 | 238 | /* check if the maxcontacts is given by the class */ |
eec29e3d | 239 | td->maxcontacts = td->mtclass.maxcontacts; |
9498f954 BT |
240 | |
241 | break; | |
5519cab4 BT |
242 | } |
243 | } | |
244 | ||
245 | static void set_abs(struct input_dev *input, unsigned int code, | |
246 | struct hid_field *field, int snratio) | |
247 | { | |
248 | int fmin = field->logical_minimum; | |
249 | int fmax = field->logical_maximum; | |
250 | int fuzz = snratio ? (fmax - fmin) / snratio : 0; | |
251 | input_set_abs_params(input, code, fmin, fmax, fuzz, 0); | |
252 | } | |
253 | ||
254 | static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
255 | struct hid_field *field, struct hid_usage *usage, | |
256 | unsigned long **bit, int *max) | |
257 | { | |
258 | struct mt_device *td = hid_get_drvdata(hdev); | |
eec29e3d | 259 | struct mt_class *cls = &td->mtclass; |
4875ac11 | 260 | |
658d4aed JB |
261 | /* Only map fields from TouchScreen or TouchPad collections. |
262 | * We need to ignore fields that belong to other collections | |
263 | * such as Mouse that might have the same GenericDesktop usages. */ | |
264 | if (field->application == HID_DG_TOUCHSCREEN) | |
265 | set_bit(INPUT_PROP_DIRECT, hi->input->propbit); | |
266 | else if (field->application == HID_DG_TOUCHPAD) | |
267 | set_bit(INPUT_PROP_POINTER, hi->input->propbit); | |
268 | else | |
269 | return 0; | |
270 | ||
2261bb9f BT |
271 | /* eGalax devices provide a Digitizer.Stylus input which overrides |
272 | * the correct Digitizers.Finger X/Y ranges. | |
273 | * Let's just ignore this input. */ | |
274 | if (field->physical == HID_DG_STYLUS) | |
275 | return -1; | |
276 | ||
5519cab4 BT |
277 | switch (usage->hid & HID_USAGE_PAGE) { |
278 | ||
279 | case HID_UP_GENDESK: | |
280 | switch (usage->hid) { | |
281 | case HID_GD_X: | |
282 | hid_map_usage(hi, usage, bit, max, | |
283 | EV_ABS, ABS_MT_POSITION_X); | |
284 | set_abs(hi->input, ABS_MT_POSITION_X, field, | |
285 | cls->sn_move); | |
286 | /* touchscreen emulation */ | |
287 | set_abs(hi->input, ABS_X, field, cls->sn_move); | |
b84bd27f BT |
288 | if (td->last_mt_collection == usage->collection_index) { |
289 | td->last_slot_field = usage->hid; | |
290 | td->last_field_index = field->index; | |
291 | } | |
5519cab4 BT |
292 | return 1; |
293 | case HID_GD_Y: | |
294 | hid_map_usage(hi, usage, bit, max, | |
295 | EV_ABS, ABS_MT_POSITION_Y); | |
296 | set_abs(hi->input, ABS_MT_POSITION_Y, field, | |
297 | cls->sn_move); | |
298 | /* touchscreen emulation */ | |
299 | set_abs(hi->input, ABS_Y, field, cls->sn_move); | |
b84bd27f BT |
300 | if (td->last_mt_collection == usage->collection_index) { |
301 | td->last_slot_field = usage->hid; | |
302 | td->last_field_index = field->index; | |
303 | } | |
5519cab4 BT |
304 | return 1; |
305 | } | |
306 | return 0; | |
307 | ||
308 | case HID_UP_DIGITIZER: | |
309 | switch (usage->hid) { | |
310 | case HID_DG_INRANGE: | |
b84bd27f BT |
311 | if (td->last_mt_collection == usage->collection_index) { |
312 | td->last_slot_field = usage->hid; | |
313 | td->last_field_index = field->index; | |
314 | } | |
5519cab4 BT |
315 | return 1; |
316 | case HID_DG_CONFIDENCE: | |
b84bd27f BT |
317 | if (td->last_mt_collection == usage->collection_index) { |
318 | td->last_slot_field = usage->hid; | |
319 | td->last_field_index = field->index; | |
320 | } | |
5519cab4 BT |
321 | return 1; |
322 | case HID_DG_TIPSWITCH: | |
323 | hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); | |
324 | input_set_capability(hi->input, EV_KEY, BTN_TOUCH); | |
b84bd27f BT |
325 | if (td->last_mt_collection == usage->collection_index) { |
326 | td->last_slot_field = usage->hid; | |
327 | td->last_field_index = field->index; | |
328 | } | |
5519cab4 BT |
329 | return 1; |
330 | case HID_DG_CONTACTID: | |
50bc03ab BT |
331 | if (!td->maxcontacts) |
332 | td->maxcontacts = MT_DEFAULT_MAXCONTACT; | |
9498f954 | 333 | input_mt_init_slots(hi->input, td->maxcontacts); |
5519cab4 | 334 | td->last_slot_field = usage->hid; |
2955caed | 335 | td->last_field_index = field->index; |
b84bd27f | 336 | td->last_mt_collection = usage->collection_index; |
5519cab4 BT |
337 | return 1; |
338 | case HID_DG_WIDTH: | |
339 | hid_map_usage(hi, usage, bit, max, | |
340 | EV_ABS, ABS_MT_TOUCH_MAJOR); | |
f786bba4 BT |
341 | set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, |
342 | cls->sn_width); | |
b84bd27f BT |
343 | if (td->last_mt_collection == usage->collection_index) { |
344 | td->last_slot_field = usage->hid; | |
345 | td->last_field_index = field->index; | |
346 | } | |
5519cab4 BT |
347 | return 1; |
348 | case HID_DG_HEIGHT: | |
349 | hid_map_usage(hi, usage, bit, max, | |
350 | EV_ABS, ABS_MT_TOUCH_MINOR); | |
f786bba4 BT |
351 | set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, |
352 | cls->sn_height); | |
1e648a13 BT |
353 | input_set_abs_params(hi->input, |
354 | ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
b84bd27f BT |
355 | if (td->last_mt_collection == usage->collection_index) { |
356 | td->last_slot_field = usage->hid; | |
357 | td->last_field_index = field->index; | |
358 | } | |
5519cab4 BT |
359 | return 1; |
360 | case HID_DG_TIPPRESSURE: | |
361 | hid_map_usage(hi, usage, bit, max, | |
362 | EV_ABS, ABS_MT_PRESSURE); | |
363 | set_abs(hi->input, ABS_MT_PRESSURE, field, | |
364 | cls->sn_pressure); | |
365 | /* touchscreen emulation */ | |
366 | set_abs(hi->input, ABS_PRESSURE, field, | |
367 | cls->sn_pressure); | |
b84bd27f BT |
368 | if (td->last_mt_collection == usage->collection_index) { |
369 | td->last_slot_field = usage->hid; | |
370 | td->last_field_index = field->index; | |
371 | } | |
5519cab4 BT |
372 | return 1; |
373 | case HID_DG_CONTACTCOUNT: | |
b84bd27f BT |
374 | if (td->last_mt_collection == usage->collection_index) |
375 | td->last_field_index = field->index; | |
5519cab4 BT |
376 | return 1; |
377 | case HID_DG_CONTACTMAX: | |
378 | /* we don't set td->last_slot_field as contactcount and | |
379 | * contact max are global to the report */ | |
b84bd27f BT |
380 | if (td->last_mt_collection == usage->collection_index) |
381 | td->last_field_index = field->index; | |
5519cab4 BT |
382 | return -1; |
383 | } | |
384 | /* let hid-input decide for the others */ | |
385 | return 0; | |
386 | ||
387 | case 0xff000000: | |
388 | /* we do not want to map these: no input-oriented meaning */ | |
389 | return -1; | |
390 | } | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
396 | struct hid_field *field, struct hid_usage *usage, | |
397 | unsigned long **bit, int *max) | |
398 | { | |
399 | if (usage->type == EV_KEY || usage->type == EV_ABS) | |
400 | set_bit(usage->type, hi->input->evbit); | |
401 | ||
402 | return -1; | |
403 | } | |
404 | ||
405 | static int mt_compute_slot(struct mt_device *td) | |
406 | { | |
eec29e3d | 407 | __s32 quirks = td->mtclass.quirks; |
5519cab4 | 408 | |
2d93666e BT |
409 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) |
410 | return td->curdata.contactid; | |
5519cab4 | 411 | |
2d93666e | 412 | if (quirks & MT_QUIRK_CYPRESS) |
a3b5e577 BT |
413 | return cypress_compute_slot(td); |
414 | ||
2d93666e BT |
415 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) |
416 | return td->num_received; | |
5572da08 | 417 | |
4a6ee685 BT |
418 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) |
419 | return td->curdata.contactid - 1; | |
420 | ||
5519cab4 BT |
421 | return find_slot_from_contactid(td); |
422 | } | |
423 | ||
424 | /* | |
425 | * this function is called when a whole contact has been processed, | |
426 | * so that it can assign it to a slot and store the data there | |
427 | */ | |
428 | static void mt_complete_slot(struct mt_device *td) | |
429 | { | |
2d93666e | 430 | td->curdata.seen_in_this_frame = true; |
5519cab4 | 431 | if (td->curvalid) { |
5519cab4 BT |
432 | int slotnum = mt_compute_slot(td); |
433 | ||
9498f954 | 434 | if (slotnum >= 0 && slotnum < td->maxcontacts) |
2d93666e | 435 | td->slots[slotnum] = td->curdata; |
5519cab4 BT |
436 | } |
437 | td->num_received++; | |
438 | } | |
439 | ||
440 | ||
441 | /* | |
442 | * this function is called when a whole packet has been received and processed, | |
443 | * so that it can decide what to send to the input layer. | |
444 | */ | |
445 | static void mt_emit_event(struct mt_device *td, struct input_dev *input) | |
446 | { | |
447 | int i; | |
448 | ||
9498f954 | 449 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 | 450 | struct mt_slot *s = &(td->slots[i]); |
eec29e3d | 451 | if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && |
5519cab4 | 452 | !s->seen_in_this_frame) { |
5519cab4 BT |
453 | s->touch_state = false; |
454 | } | |
455 | ||
456 | input_mt_slot(input, i); | |
457 | input_mt_report_slot_state(input, MT_TOOL_FINGER, | |
458 | s->touch_state); | |
2d93666e | 459 | if (s->touch_state) { |
f786bba4 BT |
460 | /* this finger is on the screen */ |
461 | int wide = (s->w > s->h); | |
462 | /* divided by two to match visual scale of touch */ | |
463 | int major = max(s->w, s->h) >> 1; | |
464 | int minor = min(s->w, s->h) >> 1; | |
465 | ||
2d93666e BT |
466 | input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); |
467 | input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); | |
f786bba4 | 468 | input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); |
2d93666e | 469 | input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); |
f786bba4 BT |
470 | input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); |
471 | input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
2d93666e | 472 | } |
5519cab4 BT |
473 | s->seen_in_this_frame = false; |
474 | ||
475 | } | |
476 | ||
477 | input_mt_report_pointer_emulation(input, true); | |
478 | input_sync(input); | |
479 | td->num_received = 0; | |
480 | } | |
481 | ||
482 | ||
483 | ||
484 | static int mt_event(struct hid_device *hid, struct hid_field *field, | |
485 | struct hid_usage *usage, __s32 value) | |
486 | { | |
487 | struct mt_device *td = hid_get_drvdata(hid); | |
eec29e3d | 488 | __s32 quirks = td->mtclass.quirks; |
5519cab4 | 489 | |
9498f954 | 490 | if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { |
5519cab4 BT |
491 | switch (usage->hid) { |
492 | case HID_DG_INRANGE: | |
a062cc5a SC |
493 | if (quirks & MT_QUIRK_ALWAYS_VALID) |
494 | td->curvalid = true; | |
495 | else if (quirks & MT_QUIRK_VALID_IS_INRANGE) | |
2d93666e | 496 | td->curvalid = value; |
5519cab4 BT |
497 | break; |
498 | case HID_DG_TIPSWITCH: | |
2d93666e BT |
499 | if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) |
500 | td->curvalid = value; | |
5519cab4 BT |
501 | td->curdata.touch_state = value; |
502 | break; | |
503 | case HID_DG_CONFIDENCE: | |
2d93666e BT |
504 | if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) |
505 | td->curvalid = value; | |
5519cab4 BT |
506 | break; |
507 | case HID_DG_CONTACTID: | |
508 | td->curdata.contactid = value; | |
509 | break; | |
510 | case HID_DG_TIPPRESSURE: | |
511 | td->curdata.p = value; | |
512 | break; | |
513 | case HID_GD_X: | |
514 | td->curdata.x = value; | |
515 | break; | |
516 | case HID_GD_Y: | |
517 | td->curdata.y = value; | |
518 | break; | |
519 | case HID_DG_WIDTH: | |
520 | td->curdata.w = value; | |
521 | break; | |
522 | case HID_DG_HEIGHT: | |
523 | td->curdata.h = value; | |
524 | break; | |
525 | case HID_DG_CONTACTCOUNT: | |
526 | /* | |
2d93666e BT |
527 | * Includes multi-packet support where subsequent |
528 | * packets are sent with zero contactcount. | |
5519cab4 BT |
529 | */ |
530 | if (value) | |
2d93666e | 531 | td->num_expected = value; |
5519cab4 BT |
532 | break; |
533 | ||
534 | default: | |
535 | /* fallback to the generic hidinput handling */ | |
536 | return 0; | |
537 | } | |
5519cab4 | 538 | |
f153fc39 | 539 | if (usage->hid == td->last_slot_field) { |
2d93666e | 540 | mt_complete_slot(td); |
f153fc39 | 541 | } |
2d93666e BT |
542 | |
543 | if (field->index == td->last_field_index | |
544 | && td->num_received >= td->num_expected) | |
545 | mt_emit_event(td, field->hidinput->input); | |
5519cab4 | 546 | |
2d93666e | 547 | } |
5519cab4 BT |
548 | |
549 | /* we have handled the hidinput part, now remains hiddev */ | |
550 | if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) | |
551 | hid->hiddev_hid_event(hid, field, usage, value); | |
552 | ||
553 | return 1; | |
554 | } | |
555 | ||
556 | static void mt_set_input_mode(struct hid_device *hdev) | |
557 | { | |
558 | struct mt_device *td = hid_get_drvdata(hdev); | |
559 | struct hid_report *r; | |
560 | struct hid_report_enum *re; | |
561 | ||
562 | if (td->inputmode < 0) | |
563 | return; | |
564 | ||
565 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); | |
566 | r = re->report_id_hash[td->inputmode]; | |
567 | if (r) { | |
568 | r->field[0]->value[0] = 0x02; | |
569 | usbhid_submit_report(hdev, r, USB_DIR_OUT); | |
570 | } | |
571 | } | |
572 | ||
573 | static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
574 | { | |
2d93666e | 575 | int ret, i; |
5519cab4 | 576 | struct mt_device *td; |
2d93666e BT |
577 | struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ |
578 | ||
579 | for (i = 0; mt_classes[i].name ; i++) { | |
580 | if (id->driver_data == mt_classes[i].name) { | |
581 | mtclass = &(mt_classes[i]); | |
582 | break; | |
583 | } | |
584 | } | |
5519cab4 | 585 | |
d682bd7f HR |
586 | /* This allows the driver to correctly support devices |
587 | * that emit events over several HID messages. | |
588 | */ | |
589 | hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; | |
5519cab4 | 590 | |
9498f954 | 591 | td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); |
5519cab4 BT |
592 | if (!td) { |
593 | dev_err(&hdev->dev, "cannot allocate multitouch data\n"); | |
594 | return -ENOMEM; | |
595 | } | |
eec29e3d | 596 | td->mtclass = *mtclass; |
5519cab4 | 597 | td->inputmode = -1; |
b84bd27f | 598 | td->last_mt_collection = -1; |
5519cab4 BT |
599 | hid_set_drvdata(hdev, td); |
600 | ||
601 | ret = hid_parse(hdev); | |
602 | if (ret != 0) | |
603 | goto fail; | |
604 | ||
605 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
2d93666e | 606 | if (ret) |
5519cab4 BT |
607 | goto fail; |
608 | ||
9498f954 BT |
609 | td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), |
610 | GFP_KERNEL); | |
611 | if (!td->slots) { | |
612 | dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); | |
613 | hid_hw_stop(hdev); | |
614 | ret = -ENOMEM; | |
615 | goto fail; | |
616 | } | |
617 | ||
eec29e3d BT |
618 | ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); |
619 | ||
5519cab4 BT |
620 | mt_set_input_mode(hdev); |
621 | ||
622 | return 0; | |
623 | ||
624 | fail: | |
625 | kfree(td); | |
626 | return ret; | |
627 | } | |
628 | ||
629 | #ifdef CONFIG_PM | |
630 | static int mt_reset_resume(struct hid_device *hdev) | |
631 | { | |
632 | mt_set_input_mode(hdev); | |
633 | return 0; | |
634 | } | |
635 | #endif | |
636 | ||
637 | static void mt_remove(struct hid_device *hdev) | |
638 | { | |
639 | struct mt_device *td = hid_get_drvdata(hdev); | |
eec29e3d | 640 | sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); |
5519cab4 | 641 | hid_hw_stop(hdev); |
9498f954 | 642 | kfree(td->slots); |
5519cab4 BT |
643 | kfree(td); |
644 | hid_set_drvdata(hdev, NULL); | |
645 | } | |
646 | ||
647 | static const struct hid_device_id mt_devices[] = { | |
648 | ||
f786bba4 BT |
649 | /* 3M panels */ |
650 | { .driver_data = MT_CLS_3M, | |
651 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
652 | USB_DEVICE_ID_3M1968) }, | |
653 | { .driver_data = MT_CLS_3M, | |
654 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
655 | USB_DEVICE_ID_3M2256) }, | |
656 | ||
e6aac342 BT |
657 | /* ActionStar panels */ |
658 | { .driver_data = MT_CLS_DEFAULT, | |
659 | HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, | |
660 | USB_DEVICE_ID_ACTIONSTAR_1011) }, | |
661 | ||
a841b62c BT |
662 | /* Cando panels */ |
663 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
664 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
665 | USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, | |
666 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
667 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
668 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, | |
669 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
670 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
671 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, | |
672 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
673 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
674 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, | |
675 | ||
942fd422 AZ |
676 | /* Chunghwa Telecom touch panels */ |
677 | { .driver_data = MT_CLS_DEFAULT, | |
678 | HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, | |
679 | USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, | |
680 | ||
79603dc9 BT |
681 | /* CVTouch panels */ |
682 | { .driver_data = MT_CLS_DEFAULT, | |
683 | HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, | |
684 | USB_DEVICE_ID_CVTOUCH_SCREEN) }, | |
685 | ||
a3b5e577 BT |
686 | /* Cypress panel */ |
687 | { .driver_data = MT_CLS_CYPRESS, | |
688 | HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, | |
689 | USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, | |
690 | ||
22408283 | 691 | /* eGalax devices (resistive) */ |
e36f690b | 692 | { .driver_data = MT_CLS_EGALAX, |
22408283 | 693 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b BT |
694 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, |
695 | { .driver_data = MT_CLS_EGALAX, | |
22408283 | 696 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b | 697 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, |
22408283 BT |
698 | |
699 | /* eGalax devices (capacitive) */ | |
e36f690b | 700 | { .driver_data = MT_CLS_EGALAX, |
22408283 | 701 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b BT |
702 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, |
703 | { .driver_data = MT_CLS_EGALAX, | |
22408283 | 704 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b BT |
705 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, |
706 | { .driver_data = MT_CLS_EGALAX, | |
22408283 | 707 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b | 708 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, |
66f06127 BT |
709 | { .driver_data = MT_CLS_EGALAX, |
710 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
711 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, | |
bb9ff210 MV |
712 | { .driver_data = MT_CLS_EGALAX, |
713 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
714 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, | |
1b723e8d | 715 | { .driver_data = MT_CLS_EGALAX_SERIAL, |
1fd8f047 | 716 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b | 717 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, |
22408283 | 718 | |
c04abeef BT |
719 | /* Elo TouchSystems IntelliTouch Plus panel */ |
720 | { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, | |
721 | HID_USB_DEVICE(USB_VENDOR_ID_ELO, | |
722 | USB_DEVICE_ID_ELO_TS2515) }, | |
723 | ||
5572da08 | 724 | /* GeneralTouch panel */ |
1e9cf35b | 725 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
5572da08 BT |
726 | HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, |
727 | USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, | |
728 | ||
ee0fbd14 BT |
729 | /* GoodTouch panels */ |
730 | { .driver_data = MT_CLS_DEFAULT, | |
731 | HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, | |
732 | USB_DEVICE_ID_GOODTOUCH_000f) }, | |
733 | ||
a062cc5a SC |
734 | /* Ideacom panel */ |
735 | { .driver_data = MT_CLS_SERIAL, | |
736 | HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM, | |
737 | USB_DEVICE_ID_IDEACOM_IDC6650) }, | |
738 | ||
4e61f0d7 AZ |
739 | /* Ilitek dual touch panel */ |
740 | { .driver_data = MT_CLS_DEFAULT, | |
741 | HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, | |
742 | USB_DEVICE_ID_ILITEK_MULTITOUCH) }, | |
743 | ||
4dfcced8 BT |
744 | /* IRTOUCH panels */ |
745 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, | |
746 | HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, | |
747 | USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, | |
748 | ||
c50bb1a4 JB |
749 | /* LG Display panels */ |
750 | { .driver_data = MT_CLS_DEFAULT, | |
751 | HID_USB_DEVICE(USB_VENDOR_ID_LG, | |
752 | USB_DEVICE_ID_LG_MULTITOUCH) }, | |
753 | ||
df167c4a BT |
754 | /* Lumio panels */ |
755 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
756 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
757 | USB_DEVICE_ID_CRYSTALTOUCH) }, | |
c3ead6de BT |
758 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, |
759 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
760 | USB_DEVICE_ID_CRYSTALTOUCH_DUAL) }, | |
df167c4a | 761 | |
4a6ee685 BT |
762 | /* MosArt panels */ |
763 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
764 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
765 | USB_DEVICE_ID_ASUS_T91MT)}, | |
766 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
767 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
768 | USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, | |
769 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
770 | HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, | |
771 | USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, | |
772 | ||
6ab3a9a6 JS |
773 | /* PenMount panels */ |
774 | { .driver_data = MT_CLS_CONFIDENCE, | |
775 | HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, | |
776 | USB_DEVICE_ID_PENMOUNT_PCI) }, | |
777 | ||
5519cab4 | 778 | /* PixCir-based panels */ |
1e9cf35b | 779 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
780 | HID_USB_DEVICE(USB_VENDOR_ID_HANVON, |
781 | USB_DEVICE_ID_HANVON_MULTITOUCH) }, | |
1e9cf35b | 782 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
783 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, |
784 | USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, | |
785 | ||
043b403a | 786 | /* Stantum panels */ |
bf5af9b5 | 787 | { .driver_data = MT_CLS_CONFIDENCE, |
043b403a BT |
788 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, |
789 | USB_DEVICE_ID_MTP)}, | |
bf5af9b5 | 790 | { .driver_data = MT_CLS_CONFIDENCE, |
85a60082 | 791 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, |
043b403a | 792 | USB_DEVICE_ID_MTP_STM)}, |
bf5af9b5 | 793 | { .driver_data = MT_CLS_CONFIDENCE, |
85a60082 | 794 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, |
043b403a BT |
795 | USB_DEVICE_ID_MTP_SITRONIX)}, |
796 | ||
5e74e56d BT |
797 | /* Touch International panels */ |
798 | { .driver_data = MT_CLS_DEFAULT, | |
799 | HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, | |
800 | USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, | |
801 | ||
617b64f9 BT |
802 | /* Unitec panels */ |
803 | { .driver_data = MT_CLS_DEFAULT, | |
804 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
805 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, | |
806 | { .driver_data = MT_CLS_DEFAULT, | |
807 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
808 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, | |
bc8a2a9b | 809 | /* XAT */ |
810 | { .driver_data = MT_CLS_DEFAULT, | |
811 | HID_USB_DEVICE(USB_VENDOR_ID_XAT, | |
812 | USB_DEVICE_ID_XAT_CSR) }, | |
617b64f9 | 813 | |
5519cab4 BT |
814 | { } |
815 | }; | |
816 | MODULE_DEVICE_TABLE(hid, mt_devices); | |
817 | ||
818 | static const struct hid_usage_id mt_grabbed_usages[] = { | |
819 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, | |
820 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} | |
821 | }; | |
822 | ||
823 | static struct hid_driver mt_driver = { | |
824 | .name = "hid-multitouch", | |
825 | .id_table = mt_devices, | |
826 | .probe = mt_probe, | |
827 | .remove = mt_remove, | |
828 | .input_mapping = mt_input_mapping, | |
829 | .input_mapped = mt_input_mapped, | |
830 | .feature_mapping = mt_feature_mapping, | |
831 | .usage_table = mt_grabbed_usages, | |
832 | .event = mt_event, | |
833 | #ifdef CONFIG_PM | |
834 | .reset_resume = mt_reset_resume, | |
835 | #endif | |
836 | }; | |
837 | ||
838 | static int __init mt_init(void) | |
839 | { | |
840 | return hid_register_driver(&mt_driver); | |
841 | } | |
842 | ||
843 | static void __exit mt_exit(void) | |
844 | { | |
845 | hid_unregister_driver(&mt_driver); | |
846 | } | |
847 | ||
848 | module_init(mt_init); | |
849 | module_exit(mt_exit); |