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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 | |
5e7ea11f BT |
91 | #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004 |
92 | #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005 | |
93 | #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006 | |
94 | #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 | |
95 | #define MT_CLS_DUAL_NSMU_CONTACTID 0x0008 | |
22408283 BT |
96 | |
97 | /* vendor specific classes */ | |
98 | #define MT_CLS_3M 0x0101 | |
99 | #define MT_CLS_CYPRESS 0x0102 | |
100 | #define MT_CLS_EGALAX 0x0103 | |
1b723e8d | 101 | #define MT_CLS_EGALAX_SERIAL 0x0104 |
5519cab4 | 102 | |
9498f954 BT |
103 | #define MT_DEFAULT_MAXCONTACT 10 |
104 | ||
5519cab4 BT |
105 | /* |
106 | * these device-dependent functions determine what slot corresponds | |
107 | * to a valid contact that was just read. | |
108 | */ | |
109 | ||
a3b5e577 BT |
110 | static int cypress_compute_slot(struct mt_device *td) |
111 | { | |
112 | if (td->curdata.contactid != 0 || td->num_received == 0) | |
113 | return td->curdata.contactid; | |
114 | else | |
115 | return -1; | |
116 | } | |
117 | ||
5519cab4 BT |
118 | static int find_slot_from_contactid(struct mt_device *td) |
119 | { | |
120 | int i; | |
9498f954 | 121 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
122 | if (td->slots[i].contactid == td->curdata.contactid && |
123 | td->slots[i].touch_state) | |
124 | return i; | |
125 | } | |
9498f954 | 126 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 BT |
127 | if (!td->slots[i].seen_in_this_frame && |
128 | !td->slots[i].touch_state) | |
129 | return i; | |
130 | } | |
5519cab4 BT |
131 | /* should not occurs. If this happens that means |
132 | * that the device sent more touches that it says | |
133 | * in the report descriptor. It is ignored then. */ | |
2d93666e | 134 | return -1; |
5519cab4 BT |
135 | } |
136 | ||
137 | struct mt_class mt_classes[] = { | |
2d93666e | 138 | { .name = MT_CLS_DEFAULT, |
9498f954 | 139 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, |
a062cc5a SC |
140 | { .name = MT_CLS_SERIAL, |
141 | .quirks = MT_QUIRK_ALWAYS_VALID}, | |
22408283 BT |
142 | { .name = MT_CLS_CONFIDENCE, |
143 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE }, | |
5e7ea11f BT |
144 | { .name = MT_CLS_CONFIDENCE_CONTACT_ID, |
145 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
146 | MT_QUIRK_SLOT_IS_CONTACTID }, | |
22408283 BT |
147 | { .name = MT_CLS_CONFIDENCE_MINUS_ONE, |
148 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
149 | MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE }, | |
1e9cf35b | 150 | { .name = MT_CLS_DUAL_INRANGE_CONTACTID, |
2d93666e BT |
151 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
152 | MT_QUIRK_SLOT_IS_CONTACTID, | |
153 | .maxcontacts = 2 }, | |
1e9cf35b | 154 | { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
2d93666e BT |
155 | .quirks = MT_QUIRK_VALID_IS_INRANGE | |
156 | MT_QUIRK_SLOT_IS_CONTACTNUMBER, | |
157 | .maxcontacts = 2 }, | |
22408283 BT |
158 | { .name = MT_CLS_DUAL_NSMU_CONTACTID, |
159 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
160 | MT_QUIRK_SLOT_IS_CONTACTID, | |
161 | .maxcontacts = 2 }, | |
162 | ||
163 | /* | |
164 | * vendor specific classes | |
165 | */ | |
166 | { .name = MT_CLS_3M, | |
167 | .quirks = MT_QUIRK_VALID_IS_CONFIDENCE | | |
168 | MT_QUIRK_SLOT_IS_CONTACTID, | |
169 | .sn_move = 2048, | |
170 | .sn_width = 128, | |
171 | .sn_height = 128 }, | |
2d93666e BT |
172 | { .name = MT_CLS_CYPRESS, |
173 | .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | | |
174 | MT_QUIRK_CYPRESS, | |
175 | .maxcontacts = 10 }, | |
4875ac11 RN |
176 | { .name = MT_CLS_EGALAX, |
177 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
2261bb9f | 178 | MT_QUIRK_VALID_IS_INRANGE, |
4875ac11 RN |
179 | .sn_move = 4096, |
180 | .sn_pressure = 32, | |
181 | }, | |
1b723e8d BT |
182 | { .name = MT_CLS_EGALAX_SERIAL, |
183 | .quirks = MT_QUIRK_SLOT_IS_CONTACTID | | |
184 | MT_QUIRK_ALWAYS_VALID, | |
185 | .sn_move = 4096, | |
186 | .sn_pressure = 32, | |
187 | }, | |
043b403a | 188 | |
2d93666e | 189 | { } |
5519cab4 BT |
190 | }; |
191 | ||
eec29e3d BT |
192 | static ssize_t mt_show_quirks(struct device *dev, |
193 | struct device_attribute *attr, | |
194 | char *buf) | |
195 | { | |
196 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); | |
197 | struct mt_device *td = hid_get_drvdata(hdev); | |
198 | ||
199 | return sprintf(buf, "%u\n", td->mtclass.quirks); | |
200 | } | |
201 | ||
202 | static ssize_t mt_set_quirks(struct device *dev, | |
203 | struct device_attribute *attr, | |
204 | const char *buf, size_t count) | |
205 | { | |
206 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); | |
207 | struct mt_device *td = hid_get_drvdata(hdev); | |
208 | ||
209 | unsigned long val; | |
210 | ||
211 | if (kstrtoul(buf, 0, &val)) | |
212 | return -EINVAL; | |
213 | ||
214 | td->mtclass.quirks = val; | |
215 | ||
216 | return count; | |
217 | } | |
218 | ||
219 | static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks); | |
220 | ||
221 | static struct attribute *sysfs_attrs[] = { | |
222 | &dev_attr_quirks.attr, | |
223 | NULL | |
224 | }; | |
225 | ||
226 | static struct attribute_group mt_attribute_group = { | |
227 | .attrs = sysfs_attrs | |
228 | }; | |
229 | ||
f635bd11 | 230 | static void mt_feature_mapping(struct hid_device *hdev, |
5519cab4 BT |
231 | struct hid_field *field, struct hid_usage *usage) |
232 | { | |
9498f954 BT |
233 | struct mt_device *td = hid_get_drvdata(hdev); |
234 | ||
235 | switch (usage->hid) { | |
236 | case HID_DG_INPUTMODE: | |
5519cab4 | 237 | td->inputmode = field->report->id; |
9498f954 BT |
238 | break; |
239 | case HID_DG_CONTACTMAX: | |
240 | td->maxcontacts = field->value[0]; | |
eec29e3d | 241 | if (td->mtclass.maxcontacts) |
9498f954 | 242 | /* check if the maxcontacts is given by the class */ |
eec29e3d | 243 | td->maxcontacts = td->mtclass.maxcontacts; |
9498f954 BT |
244 | |
245 | break; | |
5519cab4 BT |
246 | } |
247 | } | |
248 | ||
249 | static void set_abs(struct input_dev *input, unsigned int code, | |
250 | struct hid_field *field, int snratio) | |
251 | { | |
252 | int fmin = field->logical_minimum; | |
253 | int fmax = field->logical_maximum; | |
254 | int fuzz = snratio ? (fmax - fmin) / snratio : 0; | |
255 | input_set_abs_params(input, code, fmin, fmax, fuzz, 0); | |
256 | } | |
257 | ||
258 | static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
259 | struct hid_field *field, struct hid_usage *usage, | |
260 | unsigned long **bit, int *max) | |
261 | { | |
262 | struct mt_device *td = hid_get_drvdata(hdev); | |
eec29e3d | 263 | struct mt_class *cls = &td->mtclass; |
4875ac11 | 264 | |
658d4aed JB |
265 | /* Only map fields from TouchScreen or TouchPad collections. |
266 | * We need to ignore fields that belong to other collections | |
267 | * such as Mouse that might have the same GenericDesktop usages. */ | |
268 | if (field->application == HID_DG_TOUCHSCREEN) | |
269 | set_bit(INPUT_PROP_DIRECT, hi->input->propbit); | |
270 | else if (field->application == HID_DG_TOUCHPAD) | |
271 | set_bit(INPUT_PROP_POINTER, hi->input->propbit); | |
272 | else | |
273 | return 0; | |
274 | ||
2261bb9f BT |
275 | /* eGalax devices provide a Digitizer.Stylus input which overrides |
276 | * the correct Digitizers.Finger X/Y ranges. | |
277 | * Let's just ignore this input. */ | |
278 | if (field->physical == HID_DG_STYLUS) | |
279 | return -1; | |
280 | ||
5519cab4 BT |
281 | switch (usage->hid & HID_USAGE_PAGE) { |
282 | ||
283 | case HID_UP_GENDESK: | |
284 | switch (usage->hid) { | |
285 | case HID_GD_X: | |
286 | hid_map_usage(hi, usage, bit, max, | |
287 | EV_ABS, ABS_MT_POSITION_X); | |
288 | set_abs(hi->input, ABS_MT_POSITION_X, field, | |
289 | cls->sn_move); | |
290 | /* touchscreen emulation */ | |
291 | set_abs(hi->input, ABS_X, field, cls->sn_move); | |
b84bd27f BT |
292 | if (td->last_mt_collection == usage->collection_index) { |
293 | td->last_slot_field = usage->hid; | |
294 | td->last_field_index = field->index; | |
295 | } | |
5519cab4 BT |
296 | return 1; |
297 | case HID_GD_Y: | |
298 | hid_map_usage(hi, usage, bit, max, | |
299 | EV_ABS, ABS_MT_POSITION_Y); | |
300 | set_abs(hi->input, ABS_MT_POSITION_Y, field, | |
301 | cls->sn_move); | |
302 | /* touchscreen emulation */ | |
303 | set_abs(hi->input, ABS_Y, field, cls->sn_move); | |
b84bd27f BT |
304 | if (td->last_mt_collection == usage->collection_index) { |
305 | td->last_slot_field = usage->hid; | |
306 | td->last_field_index = field->index; | |
307 | } | |
5519cab4 BT |
308 | return 1; |
309 | } | |
310 | return 0; | |
311 | ||
312 | case HID_UP_DIGITIZER: | |
313 | switch (usage->hid) { | |
314 | case HID_DG_INRANGE: | |
b84bd27f BT |
315 | if (td->last_mt_collection == usage->collection_index) { |
316 | td->last_slot_field = usage->hid; | |
317 | td->last_field_index = field->index; | |
318 | } | |
5519cab4 BT |
319 | return 1; |
320 | case HID_DG_CONFIDENCE: | |
b84bd27f BT |
321 | if (td->last_mt_collection == usage->collection_index) { |
322 | td->last_slot_field = usage->hid; | |
323 | td->last_field_index = field->index; | |
324 | } | |
5519cab4 BT |
325 | return 1; |
326 | case HID_DG_TIPSWITCH: | |
327 | hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH); | |
328 | input_set_capability(hi->input, EV_KEY, BTN_TOUCH); | |
b84bd27f BT |
329 | if (td->last_mt_collection == usage->collection_index) { |
330 | td->last_slot_field = usage->hid; | |
331 | td->last_field_index = field->index; | |
332 | } | |
5519cab4 BT |
333 | return 1; |
334 | case HID_DG_CONTACTID: | |
50bc03ab BT |
335 | if (!td->maxcontacts) |
336 | td->maxcontacts = MT_DEFAULT_MAXCONTACT; | |
9498f954 | 337 | input_mt_init_slots(hi->input, td->maxcontacts); |
5519cab4 | 338 | td->last_slot_field = usage->hid; |
2955caed | 339 | td->last_field_index = field->index; |
b84bd27f | 340 | td->last_mt_collection = usage->collection_index; |
5519cab4 BT |
341 | return 1; |
342 | case HID_DG_WIDTH: | |
343 | hid_map_usage(hi, usage, bit, max, | |
344 | EV_ABS, ABS_MT_TOUCH_MAJOR); | |
f786bba4 BT |
345 | set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, |
346 | cls->sn_width); | |
b84bd27f BT |
347 | if (td->last_mt_collection == usage->collection_index) { |
348 | td->last_slot_field = usage->hid; | |
349 | td->last_field_index = field->index; | |
350 | } | |
5519cab4 BT |
351 | return 1; |
352 | case HID_DG_HEIGHT: | |
353 | hid_map_usage(hi, usage, bit, max, | |
354 | EV_ABS, ABS_MT_TOUCH_MINOR); | |
f786bba4 BT |
355 | set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, |
356 | cls->sn_height); | |
1e648a13 BT |
357 | input_set_abs_params(hi->input, |
358 | ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
b84bd27f BT |
359 | if (td->last_mt_collection == usage->collection_index) { |
360 | td->last_slot_field = usage->hid; | |
361 | td->last_field_index = field->index; | |
362 | } | |
5519cab4 BT |
363 | return 1; |
364 | case HID_DG_TIPPRESSURE: | |
365 | hid_map_usage(hi, usage, bit, max, | |
366 | EV_ABS, ABS_MT_PRESSURE); | |
367 | set_abs(hi->input, ABS_MT_PRESSURE, field, | |
368 | cls->sn_pressure); | |
369 | /* touchscreen emulation */ | |
370 | set_abs(hi->input, ABS_PRESSURE, field, | |
371 | cls->sn_pressure); | |
b84bd27f BT |
372 | if (td->last_mt_collection == usage->collection_index) { |
373 | td->last_slot_field = usage->hid; | |
374 | td->last_field_index = field->index; | |
375 | } | |
5519cab4 BT |
376 | return 1; |
377 | case HID_DG_CONTACTCOUNT: | |
b84bd27f BT |
378 | if (td->last_mt_collection == usage->collection_index) |
379 | td->last_field_index = field->index; | |
5519cab4 BT |
380 | return 1; |
381 | case HID_DG_CONTACTMAX: | |
382 | /* we don't set td->last_slot_field as contactcount and | |
383 | * contact max are global to the report */ | |
b84bd27f BT |
384 | if (td->last_mt_collection == usage->collection_index) |
385 | td->last_field_index = field->index; | |
5519cab4 BT |
386 | return -1; |
387 | } | |
388 | /* let hid-input decide for the others */ | |
389 | return 0; | |
390 | ||
391 | case 0xff000000: | |
392 | /* we do not want to map these: no input-oriented meaning */ | |
393 | return -1; | |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
400 | struct hid_field *field, struct hid_usage *usage, | |
401 | unsigned long **bit, int *max) | |
402 | { | |
403 | if (usage->type == EV_KEY || usage->type == EV_ABS) | |
404 | set_bit(usage->type, hi->input->evbit); | |
405 | ||
406 | return -1; | |
407 | } | |
408 | ||
409 | static int mt_compute_slot(struct mt_device *td) | |
410 | { | |
eec29e3d | 411 | __s32 quirks = td->mtclass.quirks; |
5519cab4 | 412 | |
2d93666e BT |
413 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID) |
414 | return td->curdata.contactid; | |
5519cab4 | 415 | |
2d93666e | 416 | if (quirks & MT_QUIRK_CYPRESS) |
a3b5e577 BT |
417 | return cypress_compute_slot(td); |
418 | ||
2d93666e BT |
419 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER) |
420 | return td->num_received; | |
5572da08 | 421 | |
4a6ee685 BT |
422 | if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) |
423 | return td->curdata.contactid - 1; | |
424 | ||
5519cab4 BT |
425 | return find_slot_from_contactid(td); |
426 | } | |
427 | ||
428 | /* | |
429 | * this function is called when a whole contact has been processed, | |
430 | * so that it can assign it to a slot and store the data there | |
431 | */ | |
432 | static void mt_complete_slot(struct mt_device *td) | |
433 | { | |
2d93666e | 434 | td->curdata.seen_in_this_frame = true; |
5519cab4 | 435 | if (td->curvalid) { |
5519cab4 BT |
436 | int slotnum = mt_compute_slot(td); |
437 | ||
9498f954 | 438 | if (slotnum >= 0 && slotnum < td->maxcontacts) |
2d93666e | 439 | td->slots[slotnum] = td->curdata; |
5519cab4 BT |
440 | } |
441 | td->num_received++; | |
442 | } | |
443 | ||
444 | ||
445 | /* | |
446 | * this function is called when a whole packet has been received and processed, | |
447 | * so that it can decide what to send to the input layer. | |
448 | */ | |
449 | static void mt_emit_event(struct mt_device *td, struct input_dev *input) | |
450 | { | |
451 | int i; | |
452 | ||
9498f954 | 453 | for (i = 0; i < td->maxcontacts; ++i) { |
5519cab4 | 454 | struct mt_slot *s = &(td->slots[i]); |
eec29e3d | 455 | if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && |
5519cab4 | 456 | !s->seen_in_this_frame) { |
5519cab4 BT |
457 | s->touch_state = false; |
458 | } | |
459 | ||
460 | input_mt_slot(input, i); | |
461 | input_mt_report_slot_state(input, MT_TOOL_FINGER, | |
462 | s->touch_state); | |
2d93666e | 463 | if (s->touch_state) { |
f786bba4 BT |
464 | /* this finger is on the screen */ |
465 | int wide = (s->w > s->h); | |
466 | /* divided by two to match visual scale of touch */ | |
467 | int major = max(s->w, s->h) >> 1; | |
468 | int minor = min(s->w, s->h) >> 1; | |
469 | ||
2d93666e BT |
470 | input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); |
471 | input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); | |
f786bba4 | 472 | input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); |
2d93666e | 473 | input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); |
f786bba4 BT |
474 | input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); |
475 | input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
2d93666e | 476 | } |
5519cab4 BT |
477 | s->seen_in_this_frame = false; |
478 | ||
479 | } | |
480 | ||
481 | input_mt_report_pointer_emulation(input, true); | |
482 | input_sync(input); | |
483 | td->num_received = 0; | |
484 | } | |
485 | ||
486 | ||
487 | ||
488 | static int mt_event(struct hid_device *hid, struct hid_field *field, | |
489 | struct hid_usage *usage, __s32 value) | |
490 | { | |
491 | struct mt_device *td = hid_get_drvdata(hid); | |
eec29e3d | 492 | __s32 quirks = td->mtclass.quirks; |
5519cab4 | 493 | |
9498f954 | 494 | if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { |
5519cab4 BT |
495 | switch (usage->hid) { |
496 | case HID_DG_INRANGE: | |
a062cc5a SC |
497 | if (quirks & MT_QUIRK_ALWAYS_VALID) |
498 | td->curvalid = true; | |
499 | else if (quirks & MT_QUIRK_VALID_IS_INRANGE) | |
2d93666e | 500 | td->curvalid = value; |
5519cab4 BT |
501 | break; |
502 | case HID_DG_TIPSWITCH: | |
2d93666e BT |
503 | if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) |
504 | td->curvalid = value; | |
5519cab4 BT |
505 | td->curdata.touch_state = value; |
506 | break; | |
507 | case HID_DG_CONFIDENCE: | |
2d93666e BT |
508 | if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) |
509 | td->curvalid = value; | |
5519cab4 BT |
510 | break; |
511 | case HID_DG_CONTACTID: | |
512 | td->curdata.contactid = value; | |
513 | break; | |
514 | case HID_DG_TIPPRESSURE: | |
515 | td->curdata.p = value; | |
516 | break; | |
517 | case HID_GD_X: | |
518 | td->curdata.x = value; | |
519 | break; | |
520 | case HID_GD_Y: | |
521 | td->curdata.y = value; | |
522 | break; | |
523 | case HID_DG_WIDTH: | |
524 | td->curdata.w = value; | |
525 | break; | |
526 | case HID_DG_HEIGHT: | |
527 | td->curdata.h = value; | |
528 | break; | |
529 | case HID_DG_CONTACTCOUNT: | |
530 | /* | |
2d93666e BT |
531 | * Includes multi-packet support where subsequent |
532 | * packets are sent with zero contactcount. | |
5519cab4 BT |
533 | */ |
534 | if (value) | |
2d93666e | 535 | td->num_expected = value; |
5519cab4 BT |
536 | break; |
537 | ||
538 | default: | |
539 | /* fallback to the generic hidinput handling */ | |
540 | return 0; | |
541 | } | |
5519cab4 | 542 | |
f153fc39 | 543 | if (usage->hid == td->last_slot_field) { |
2d93666e | 544 | mt_complete_slot(td); |
f153fc39 | 545 | } |
2d93666e BT |
546 | |
547 | if (field->index == td->last_field_index | |
548 | && td->num_received >= td->num_expected) | |
549 | mt_emit_event(td, field->hidinput->input); | |
5519cab4 | 550 | |
2d93666e | 551 | } |
5519cab4 BT |
552 | |
553 | /* we have handled the hidinput part, now remains hiddev */ | |
554 | if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event) | |
555 | hid->hiddev_hid_event(hid, field, usage, value); | |
556 | ||
557 | return 1; | |
558 | } | |
559 | ||
560 | static void mt_set_input_mode(struct hid_device *hdev) | |
561 | { | |
562 | struct mt_device *td = hid_get_drvdata(hdev); | |
563 | struct hid_report *r; | |
564 | struct hid_report_enum *re; | |
565 | ||
566 | if (td->inputmode < 0) | |
567 | return; | |
568 | ||
569 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); | |
570 | r = re->report_id_hash[td->inputmode]; | |
571 | if (r) { | |
572 | r->field[0]->value[0] = 0x02; | |
573 | usbhid_submit_report(hdev, r, USB_DIR_OUT); | |
574 | } | |
575 | } | |
576 | ||
577 | static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
578 | { | |
2d93666e | 579 | int ret, i; |
5519cab4 | 580 | struct mt_device *td; |
2d93666e BT |
581 | struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */ |
582 | ||
583 | for (i = 0; mt_classes[i].name ; i++) { | |
584 | if (id->driver_data == mt_classes[i].name) { | |
585 | mtclass = &(mt_classes[i]); | |
586 | break; | |
587 | } | |
588 | } | |
5519cab4 | 589 | |
d682bd7f HR |
590 | /* This allows the driver to correctly support devices |
591 | * that emit events over several HID messages. | |
592 | */ | |
593 | hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; | |
5519cab4 | 594 | |
9498f954 | 595 | td = kzalloc(sizeof(struct mt_device), GFP_KERNEL); |
5519cab4 BT |
596 | if (!td) { |
597 | dev_err(&hdev->dev, "cannot allocate multitouch data\n"); | |
598 | return -ENOMEM; | |
599 | } | |
eec29e3d | 600 | td->mtclass = *mtclass; |
5519cab4 | 601 | td->inputmode = -1; |
b84bd27f | 602 | td->last_mt_collection = -1; |
5519cab4 BT |
603 | hid_set_drvdata(hdev, td); |
604 | ||
605 | ret = hid_parse(hdev); | |
606 | if (ret != 0) | |
607 | goto fail; | |
608 | ||
609 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
2d93666e | 610 | if (ret) |
5519cab4 BT |
611 | goto fail; |
612 | ||
9498f954 BT |
613 | td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), |
614 | GFP_KERNEL); | |
615 | if (!td->slots) { | |
616 | dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); | |
617 | hid_hw_stop(hdev); | |
618 | ret = -ENOMEM; | |
619 | goto fail; | |
620 | } | |
621 | ||
eec29e3d BT |
622 | ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); |
623 | ||
5519cab4 BT |
624 | mt_set_input_mode(hdev); |
625 | ||
626 | return 0; | |
627 | ||
628 | fail: | |
629 | kfree(td); | |
630 | return ret; | |
631 | } | |
632 | ||
633 | #ifdef CONFIG_PM | |
634 | static int mt_reset_resume(struct hid_device *hdev) | |
635 | { | |
636 | mt_set_input_mode(hdev); | |
637 | return 0; | |
638 | } | |
639 | #endif | |
640 | ||
641 | static void mt_remove(struct hid_device *hdev) | |
642 | { | |
643 | struct mt_device *td = hid_get_drvdata(hdev); | |
eec29e3d | 644 | sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); |
5519cab4 | 645 | hid_hw_stop(hdev); |
9498f954 | 646 | kfree(td->slots); |
5519cab4 BT |
647 | kfree(td); |
648 | hid_set_drvdata(hdev, NULL); | |
649 | } | |
650 | ||
651 | static const struct hid_device_id mt_devices[] = { | |
652 | ||
f786bba4 BT |
653 | /* 3M panels */ |
654 | { .driver_data = MT_CLS_3M, | |
655 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
656 | USB_DEVICE_ID_3M1968) }, | |
657 | { .driver_data = MT_CLS_3M, | |
658 | HID_USB_DEVICE(USB_VENDOR_ID_3M, | |
659 | USB_DEVICE_ID_3M2256) }, | |
660 | ||
e6aac342 BT |
661 | /* ActionStar panels */ |
662 | { .driver_data = MT_CLS_DEFAULT, | |
663 | HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, | |
664 | USB_DEVICE_ID_ACTIONSTAR_1011) }, | |
665 | ||
a841b62c BT |
666 | /* Cando panels */ |
667 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
668 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
669 | USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, | |
670 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
671 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
672 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) }, | |
673 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
674 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
675 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, | |
676 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, | |
677 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, | |
678 | USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, | |
679 | ||
942fd422 AZ |
680 | /* Chunghwa Telecom touch panels */ |
681 | { .driver_data = MT_CLS_DEFAULT, | |
682 | HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, | |
683 | USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) }, | |
684 | ||
79603dc9 BT |
685 | /* CVTouch panels */ |
686 | { .driver_data = MT_CLS_DEFAULT, | |
687 | HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, | |
688 | USB_DEVICE_ID_CVTOUCH_SCREEN) }, | |
689 | ||
a3b5e577 BT |
690 | /* Cypress panel */ |
691 | { .driver_data = MT_CLS_CYPRESS, | |
692 | HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, | |
693 | USB_DEVICE_ID_CYPRESS_TRUETOUCH) }, | |
694 | ||
22408283 | 695 | /* eGalax devices (resistive) */ |
e36f690b | 696 | { .driver_data = MT_CLS_EGALAX, |
22408283 | 697 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b BT |
698 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) }, |
699 | { .driver_data = MT_CLS_EGALAX, | |
22408283 | 700 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b | 701 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) }, |
22408283 BT |
702 | |
703 | /* eGalax devices (capacitive) */ | |
e36f690b | 704 | { .driver_data = MT_CLS_EGALAX, |
22408283 | 705 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b BT |
706 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) }, |
707 | { .driver_data = MT_CLS_EGALAX, | |
22408283 | 708 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b BT |
709 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) }, |
710 | { .driver_data = MT_CLS_EGALAX, | |
22408283 | 711 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b | 712 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) }, |
66f06127 BT |
713 | { .driver_data = MT_CLS_EGALAX, |
714 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
715 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) }, | |
bb9ff210 MV |
716 | { .driver_data = MT_CLS_EGALAX, |
717 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, | |
718 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) }, | |
1b723e8d | 719 | { .driver_data = MT_CLS_EGALAX_SERIAL, |
1fd8f047 | 720 | HID_USB_DEVICE(USB_VENDOR_ID_DWAV, |
e36f690b | 721 | USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) }, |
22408283 | 722 | |
c04abeef BT |
723 | /* Elo TouchSystems IntelliTouch Plus panel */ |
724 | { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID, | |
725 | HID_USB_DEVICE(USB_VENDOR_ID_ELO, | |
726 | USB_DEVICE_ID_ELO_TS2515) }, | |
727 | ||
5572da08 | 728 | /* GeneralTouch panel */ |
1e9cf35b | 729 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, |
5572da08 BT |
730 | HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, |
731 | USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) }, | |
732 | ||
ee0fbd14 BT |
733 | /* GoodTouch panels */ |
734 | { .driver_data = MT_CLS_DEFAULT, | |
735 | HID_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH, | |
736 | USB_DEVICE_ID_GOODTOUCH_000f) }, | |
737 | ||
a062cc5a SC |
738 | /* Ideacom panel */ |
739 | { .driver_data = MT_CLS_SERIAL, | |
740 | HID_USB_DEVICE(USB_VENDOR_ID_IDEACOM, | |
741 | USB_DEVICE_ID_IDEACOM_IDC6650) }, | |
742 | ||
4e61f0d7 AZ |
743 | /* Ilitek dual touch panel */ |
744 | { .driver_data = MT_CLS_DEFAULT, | |
745 | HID_USB_DEVICE(USB_VENDOR_ID_ILITEK, | |
746 | USB_DEVICE_ID_ILITEK_MULTITOUCH) }, | |
747 | ||
4dfcced8 BT |
748 | /* IRTOUCH panels */ |
749 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, | |
750 | HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS, | |
751 | USB_DEVICE_ID_IRTOUCH_INFRARED_USB) }, | |
752 | ||
c50bb1a4 JB |
753 | /* LG Display panels */ |
754 | { .driver_data = MT_CLS_DEFAULT, | |
755 | HID_USB_DEVICE(USB_VENDOR_ID_LG, | |
756 | USB_DEVICE_ID_LG_MULTITOUCH) }, | |
757 | ||
df167c4a BT |
758 | /* Lumio panels */ |
759 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
760 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
761 | USB_DEVICE_ID_CRYSTALTOUCH) }, | |
c3ead6de BT |
762 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, |
763 | HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, | |
764 | USB_DEVICE_ID_CRYSTALTOUCH_DUAL) }, | |
df167c4a | 765 | |
4a6ee685 BT |
766 | /* MosArt panels */ |
767 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
768 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
769 | USB_DEVICE_ID_ASUS_T91MT)}, | |
770 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
771 | HID_USB_DEVICE(USB_VENDOR_ID_ASUS, | |
772 | USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) }, | |
773 | { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE, | |
774 | HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, | |
775 | USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, | |
776 | ||
6ab3a9a6 JS |
777 | /* PenMount panels */ |
778 | { .driver_data = MT_CLS_CONFIDENCE, | |
779 | HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, | |
780 | USB_DEVICE_ID_PENMOUNT_PCI) }, | |
781 | ||
5519cab4 | 782 | /* PixCir-based panels */ |
1e9cf35b | 783 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
784 | HID_USB_DEVICE(USB_VENDOR_ID_HANVON, |
785 | USB_DEVICE_ID_HANVON_MULTITOUCH) }, | |
1e9cf35b | 786 | { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID, |
5519cab4 BT |
787 | HID_USB_DEVICE(USB_VENDOR_ID_CANDO, |
788 | USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) }, | |
789 | ||
5e7ea11f BT |
790 | /* Quanta-based panels */ |
791 | { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, | |
792 | HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, | |
793 | USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) }, | |
794 | { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, | |
795 | HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, | |
796 | USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) }, | |
797 | { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID, | |
798 | HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, | |
799 | USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) }, | |
800 | ||
043b403a | 801 | /* Stantum panels */ |
bf5af9b5 | 802 | { .driver_data = MT_CLS_CONFIDENCE, |
043b403a BT |
803 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, |
804 | USB_DEVICE_ID_MTP)}, | |
bf5af9b5 | 805 | { .driver_data = MT_CLS_CONFIDENCE, |
85a60082 | 806 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, |
043b403a | 807 | USB_DEVICE_ID_MTP_STM)}, |
bf5af9b5 | 808 | { .driver_data = MT_CLS_CONFIDENCE, |
85a60082 | 809 | HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, |
043b403a BT |
810 | USB_DEVICE_ID_MTP_SITRONIX)}, |
811 | ||
5e74e56d BT |
812 | /* Touch International panels */ |
813 | { .driver_data = MT_CLS_DEFAULT, | |
814 | HID_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL, | |
815 | USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) }, | |
816 | ||
617b64f9 BT |
817 | /* Unitec panels */ |
818 | { .driver_data = MT_CLS_DEFAULT, | |
819 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
820 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) }, | |
821 | { .driver_data = MT_CLS_DEFAULT, | |
822 | HID_USB_DEVICE(USB_VENDOR_ID_UNITEC, | |
823 | USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) }, | |
bc8a2a9b | 824 | /* XAT */ |
825 | { .driver_data = MT_CLS_DEFAULT, | |
826 | HID_USB_DEVICE(USB_VENDOR_ID_XAT, | |
827 | USB_DEVICE_ID_XAT_CSR) }, | |
617b64f9 | 828 | |
5519cab4 BT |
829 | { } |
830 | }; | |
831 | MODULE_DEVICE_TABLE(hid, mt_devices); | |
832 | ||
833 | static const struct hid_usage_id mt_grabbed_usages[] = { | |
834 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, | |
835 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1} | |
836 | }; | |
837 | ||
838 | static struct hid_driver mt_driver = { | |
839 | .name = "hid-multitouch", | |
840 | .id_table = mt_devices, | |
841 | .probe = mt_probe, | |
842 | .remove = mt_remove, | |
843 | .input_mapping = mt_input_mapping, | |
844 | .input_mapped = mt_input_mapped, | |
845 | .feature_mapping = mt_feature_mapping, | |
846 | .usage_table = mt_grabbed_usages, | |
847 | .event = mt_event, | |
848 | #ifdef CONFIG_PM | |
849 | .reset_resume = mt_reset_resume, | |
850 | #endif | |
851 | }; | |
852 | ||
853 | static int __init mt_init(void) | |
854 | { | |
855 | return hid_register_driver(&mt_driver); | |
856 | } | |
857 | ||
858 | static void __exit mt_exit(void) | |
859 | { | |
860 | hid_unregister_driver(&mt_driver); | |
861 | } | |
862 | ||
863 | module_init(mt_init); | |
864 | module_exit(mt_exit); |