2 * HID driver for multitouch panels
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
9 * This code is partly based on hid-egalax.c:
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
15 * This code is partly based on hid-3m-pct.c:
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
41 #include <linux/device.h>
42 #include <linux/hid.h>
43 #include <linux/module.h>
44 #include <linux/slab.h>
45 #include <linux/input/mt.h>
46 #include <linux/string.h>
47 #include <linux/timer.h>
50 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
51 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
52 MODULE_DESCRIPTION("HID multitouch panels");
53 MODULE_LICENSE("GPL");
57 /* quirks to control the device */
58 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
59 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
60 #define MT_QUIRK_CYPRESS BIT(2)
61 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
62 #define MT_QUIRK_ALWAYS_VALID BIT(4)
63 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
64 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
65 #define MT_QUIRK_CONFIDENCE BIT(7)
66 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
67 #define MT_QUIRK_NO_AREA BIT(9)
68 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
69 #define MT_QUIRK_HOVERING BIT(11)
70 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
71 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
72 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
73 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
74 #define MT_QUIRK_STICKY_FINGERS BIT(16)
76 #define MT_INPUTMODE_TOUCHSCREEN 0x02
77 #define MT_INPUTMODE_TOUCHPAD 0x03
79 #define MT_BUTTONTYPE_CLICKPAD 0
81 #define MT_IO_FLAGS_RUNNING 0
82 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
83 #define MT_IO_FLAGS_PENDING_SLOTS 2
86 __s32 x, y, cx, cy, p, w, h;
87 __s32 contactid; /* the device ContactID assigned to this slot */
88 bool touch_state; /* is the touch valid? */
89 bool inrange_state; /* is the finger in proximity of the sensor? */
90 bool confidence_state; /* is the touch made by a finger? */
94 __s32 name; /* MT_CLS */
96 __s32 sn_move; /* Signal/noise ratio for move events */
97 __s32 sn_width; /* Signal/noise ratio for width events */
98 __s32 sn_height; /* Signal/noise ratio for height events */
99 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
101 bool is_indirect; /* true for touchpads */
102 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
106 unsigned usages[HID_MAX_FIELDS];
111 struct mt_slot curdata; /* placeholder of incoming data */
112 struct mt_class mtclass; /* our mt device class */
113 struct timer_list release_timer; /* to release sticky fingers */
114 struct mt_fields *fields; /* temporary placeholder for storing the
116 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
117 int cc_index; /* contact count field index in the report */
118 int cc_value_index; /* contact count value index in the field */
119 unsigned last_slot_field; /* the last field of a slot */
120 unsigned mt_report_id; /* the report ID of the multitouch device */
121 unsigned long initial_quirks; /* initial quirks state */
122 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
123 __s16 inputmode_index; /* InputMode HID feature index in the report */
124 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
125 -1 if non-existent */
126 __u8 inputmode_value; /* InputMode HID feature value */
127 __u8 num_received; /* how many contacts we received */
128 __u8 num_expected; /* expected last contact index */
130 __u8 touches_by_report; /* how many touches are present in one report:
131 * 1 means we should use a serial protocol
132 * > 1 means hybrid (multitouch) protocol */
133 __u8 buttons_count; /* number of physical buttons per touchpad */
134 bool is_buttonpad; /* is this device a button pad? */
135 bool serial_maybe; /* need to check for serial protocol */
136 bool curvalid; /* is the current contact valid? */
137 unsigned mt_flags; /* flags to pass to input-mt */
140 static void mt_post_parse_default_settings(struct mt_device *td);
141 static void mt_post_parse(struct mt_device *td);
143 /* classes of device behavior */
144 #define MT_CLS_DEFAULT 0x0001
146 #define MT_CLS_SERIAL 0x0002
147 #define MT_CLS_CONFIDENCE 0x0003
148 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
149 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
150 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
151 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
152 /* reserved 0x0008 */
153 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
154 #define MT_CLS_NSMU 0x000a
155 /* reserved 0x0010 */
156 /* reserved 0x0011 */
157 #define MT_CLS_WIN_8 0x0012
158 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
159 #define MT_CLS_WIN_8_DUAL 0x0014
161 /* vendor specific classes */
162 #define MT_CLS_3M 0x0101
163 /* reserved 0x0102 */
164 #define MT_CLS_EGALAX 0x0103
165 #define MT_CLS_EGALAX_SERIAL 0x0104
166 #define MT_CLS_TOPSEED 0x0105
167 #define MT_CLS_PANASONIC 0x0106
168 #define MT_CLS_FLATFROG 0x0107
169 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
170 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
171 #define MT_CLS_LG 0x010a
172 #define MT_CLS_VTL 0x0110
173 #define MT_CLS_GOOGLE 0x0111
175 #define MT_DEFAULT_MAXCONTACT 10
176 #define MT_MAX_MAXCONTACT 250
178 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
179 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
182 * these device-dependent functions determine what slot corresponds
183 * to a valid contact that was just read.
186 static int cypress_compute_slot(struct mt_device *td)
188 if (td->curdata.contactid != 0 || td->num_received == 0)
189 return td->curdata.contactid;
194 static struct mt_class mt_classes[] = {
195 { .name = MT_CLS_DEFAULT,
196 .quirks = MT_QUIRK_ALWAYS_VALID |
197 MT_QUIRK_CONTACT_CNT_ACCURATE },
198 { .name = MT_CLS_NSMU,
199 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
200 { .name = MT_CLS_SERIAL,
201 .quirks = MT_QUIRK_ALWAYS_VALID},
202 { .name = MT_CLS_CONFIDENCE,
203 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
204 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
205 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
206 MT_QUIRK_SLOT_IS_CONTACTID },
207 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
208 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
209 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
210 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
211 .quirks = MT_QUIRK_VALID_IS_INRANGE |
212 MT_QUIRK_SLOT_IS_CONTACTID,
214 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
215 .quirks = MT_QUIRK_VALID_IS_INRANGE |
216 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
218 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
219 .quirks = MT_QUIRK_VALID_IS_INRANGE |
220 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
221 { .name = MT_CLS_WIN_8,
222 .quirks = MT_QUIRK_ALWAYS_VALID |
223 MT_QUIRK_IGNORE_DUPLICATES |
225 MT_QUIRK_CONTACT_CNT_ACCURATE |
226 MT_QUIRK_STICKY_FINGERS },
227 { .name = MT_CLS_EXPORT_ALL_INPUTS,
228 .quirks = MT_QUIRK_ALWAYS_VALID |
229 MT_QUIRK_CONTACT_CNT_ACCURATE,
230 .export_all_inputs = true },
231 { .name = MT_CLS_WIN_8_DUAL,
232 .quirks = MT_QUIRK_ALWAYS_VALID |
233 MT_QUIRK_IGNORE_DUPLICATES |
235 MT_QUIRK_CONTACT_CNT_ACCURATE,
236 .export_all_inputs = true },
239 * vendor specific classes
242 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
243 MT_QUIRK_SLOT_IS_CONTACTID |
244 MT_QUIRK_TOUCH_SIZE_SCALING,
250 { .name = MT_CLS_EGALAX,
251 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
252 MT_QUIRK_VALID_IS_INRANGE,
256 { .name = MT_CLS_EGALAX_SERIAL,
257 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
258 MT_QUIRK_ALWAYS_VALID,
262 { .name = MT_CLS_TOPSEED,
263 .quirks = MT_QUIRK_ALWAYS_VALID,
267 { .name = MT_CLS_PANASONIC,
268 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
270 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
271 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
272 MT_QUIRK_VALID_IS_INRANGE |
273 MT_QUIRK_SLOT_IS_CONTACTID,
276 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
277 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
278 MT_QUIRK_SLOT_IS_CONTACTID
281 { .name = MT_CLS_FLATFROG,
282 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
288 .quirks = MT_QUIRK_ALWAYS_VALID |
289 MT_QUIRK_FIX_CONST_CONTACT_ID |
290 MT_QUIRK_IGNORE_DUPLICATES |
292 MT_QUIRK_CONTACT_CNT_ACCURATE },
293 { .name = MT_CLS_VTL,
294 .quirks = MT_QUIRK_ALWAYS_VALID |
295 MT_QUIRK_CONTACT_CNT_ACCURATE |
296 MT_QUIRK_FORCE_GET_FEATURE,
298 { .name = MT_CLS_GOOGLE,
299 .quirks = MT_QUIRK_ALWAYS_VALID |
300 MT_QUIRK_CONTACT_CNT_ACCURATE |
301 MT_QUIRK_SLOT_IS_CONTACTID |
307 static ssize_t mt_show_quirks(struct device *dev,
308 struct device_attribute *attr,
311 struct hid_device *hdev = to_hid_device(dev);
312 struct mt_device *td = hid_get_drvdata(hdev);
314 return sprintf(buf, "%u\n", td->mtclass.quirks);
317 static ssize_t mt_set_quirks(struct device *dev,
318 struct device_attribute *attr,
319 const char *buf, size_t count)
321 struct hid_device *hdev = to_hid_device(dev);
322 struct mt_device *td = hid_get_drvdata(hdev);
326 if (kstrtoul(buf, 0, &val))
329 td->mtclass.quirks = val;
331 if (td->cc_index < 0)
332 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
337 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
339 static struct attribute *sysfs_attrs[] = {
340 &dev_attr_quirks.attr,
344 static struct attribute_group mt_attribute_group = {
348 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
350 struct mt_device *td = hid_get_drvdata(hdev);
351 int ret, size = hid_report_len(report);
355 * Do not fetch the feature report if the device has been explicitly
356 * marked as non-capable.
358 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
361 buf = hid_alloc_report_buf(report, GFP_KERNEL);
365 ret = hid_hw_raw_request(hdev, report->id, buf, size,
366 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
368 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
371 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
374 dev_warn(&hdev->dev, "failed to report feature\n");
380 static void mt_feature_mapping(struct hid_device *hdev,
381 struct hid_field *field, struct hid_usage *usage)
383 struct mt_device *td = hid_get_drvdata(hdev);
385 switch (usage->hid) {
386 case HID_DG_INPUTMODE:
387 /* Ignore if value index is out of bounds. */
388 if (usage->usage_index >= field->report_count) {
389 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
393 if (td->inputmode < 0) {
394 td->inputmode = field->report->id;
395 td->inputmode_index = usage->usage_index;
398 * Some elan panels wrongly declare 2 input mode
399 * features, and silently ignore when we set the
400 * value in the second field. Skip the second feature
401 * and hope for the best.
404 "Ignoring the extra HID_DG_INPUTMODE\n");
408 case HID_DG_CONTACTMAX:
409 mt_get_feature(hdev, field->report);
411 td->maxcontact_report_id = field->report->id;
412 td->maxcontacts = field->value[0];
413 if (!td->maxcontacts &&
414 field->logical_maximum <= MT_MAX_MAXCONTACT)
415 td->maxcontacts = field->logical_maximum;
416 if (td->mtclass.maxcontacts)
417 /* check if the maxcontacts is given by the class */
418 td->maxcontacts = td->mtclass.maxcontacts;
421 case HID_DG_BUTTONTYPE:
422 if (usage->usage_index >= field->report_count) {
423 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
427 mt_get_feature(hdev, field->report);
428 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
429 td->is_buttonpad = true;
433 /* Retrieve the Win8 blob once to enable some devices */
434 if (usage->usage_index == 0)
435 mt_get_feature(hdev, field->report);
440 static void set_abs(struct input_dev *input, unsigned int code,
441 struct hid_field *field, int snratio)
443 int fmin = field->logical_minimum;
444 int fmax = field->logical_maximum;
445 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
446 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
447 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
450 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
451 struct hid_input *hi)
453 struct mt_fields *f = td->fields;
455 if (f->length >= HID_MAX_FIELDS)
458 f->usages[f->length++] = usage->hid;
461 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
462 struct hid_field *field, struct hid_usage *usage,
463 unsigned long **bit, int *max)
465 struct mt_device *td = hid_get_drvdata(hdev);
466 struct mt_class *cls = &td->mtclass;
468 struct hid_usage *prev_usage = NULL;
470 if (field->application == HID_DG_TOUCHSCREEN)
471 td->mt_flags |= INPUT_MT_DIRECT;
474 * Model touchscreens providing buttons as touchpads.
476 if (field->application == HID_DG_TOUCHPAD ||
477 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
478 td->mt_flags |= INPUT_MT_POINTER;
479 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
482 /* count the buttons on touchpads */
483 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
486 if (usage->usage_index)
487 prev_usage = &field->usage[usage->usage_index - 1];
489 switch (usage->hid & HID_USAGE_PAGE) {
492 switch (usage->hid) {
494 if (prev_usage && (prev_usage->hid == usage->hid)) {
495 hid_map_usage(hi, usage, bit, max,
496 EV_ABS, ABS_MT_TOOL_X);
497 set_abs(hi->input, ABS_MT_TOOL_X, field,
500 hid_map_usage(hi, usage, bit, max,
501 EV_ABS, ABS_MT_POSITION_X);
502 set_abs(hi->input, ABS_MT_POSITION_X, field,
506 mt_store_field(usage, td, hi);
509 if (prev_usage && (prev_usage->hid == usage->hid)) {
510 hid_map_usage(hi, usage, bit, max,
511 EV_ABS, ABS_MT_TOOL_Y);
512 set_abs(hi->input, ABS_MT_TOOL_Y, field,
515 hid_map_usage(hi, usage, bit, max,
516 EV_ABS, ABS_MT_POSITION_Y);
517 set_abs(hi->input, ABS_MT_POSITION_Y, field,
521 mt_store_field(usage, td, hi);
526 case HID_UP_DIGITIZER:
527 switch (usage->hid) {
529 if (cls->quirks & MT_QUIRK_HOVERING) {
530 hid_map_usage(hi, usage, bit, max,
531 EV_ABS, ABS_MT_DISTANCE);
532 input_set_abs_params(hi->input,
533 ABS_MT_DISTANCE, 0, 1, 0, 0);
535 mt_store_field(usage, td, hi);
537 case HID_DG_CONFIDENCE:
538 if ((cls->name == MT_CLS_WIN_8 ||
539 cls->name == MT_CLS_WIN_8_DUAL) &&
540 field->application == HID_DG_TOUCHPAD)
541 cls->quirks |= MT_QUIRK_CONFIDENCE;
542 mt_store_field(usage, td, hi);
544 case HID_DG_TIPSWITCH:
545 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
546 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
547 mt_store_field(usage, td, hi);
549 case HID_DG_CONTACTID:
550 mt_store_field(usage, td, hi);
551 td->touches_by_report++;
552 td->mt_report_id = field->report->id;
555 hid_map_usage(hi, usage, bit, max,
556 EV_ABS, ABS_MT_TOUCH_MAJOR);
557 if (!(cls->quirks & MT_QUIRK_NO_AREA))
558 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
560 mt_store_field(usage, td, hi);
563 hid_map_usage(hi, usage, bit, max,
564 EV_ABS, ABS_MT_TOUCH_MINOR);
565 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
566 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
568 input_set_abs_params(hi->input,
569 ABS_MT_ORIENTATION, 0, 1, 0, 0);
571 mt_store_field(usage, td, hi);
573 case HID_DG_TIPPRESSURE:
574 hid_map_usage(hi, usage, bit, max,
575 EV_ABS, ABS_MT_PRESSURE);
576 set_abs(hi->input, ABS_MT_PRESSURE, field,
578 mt_store_field(usage, td, hi);
580 case HID_DG_CONTACTCOUNT:
581 /* Ignore if indexes are out of bounds. */
582 if (field->index >= field->report->maxfield ||
583 usage->usage_index >= field->report_count)
585 td->cc_index = field->index;
586 td->cc_value_index = usage->usage_index;
588 case HID_DG_CONTACTMAX:
589 /* we don't set td->last_slot_field as contactcount and
590 * contact max are global to the report */
593 /* Legacy devices use TIPSWITCH and not TOUCH.
594 * Let's just ignore this field. */
597 /* let hid-input decide for the others */
601 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
603 * MS PTP spec says that external buttons left and right have
606 if ((cls->name == MT_CLS_WIN_8 ||
607 cls->name == MT_CLS_WIN_8_DUAL) &&
608 field->application == HID_DG_TOUCHPAD &&
609 (usage->hid & HID_USAGE) > 1)
611 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
612 input_set_capability(hi->input, EV_KEY, code);
616 /* we do not want to map these: no input-oriented meaning */
623 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
625 __s32 quirks = td->mtclass.quirks;
627 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
628 return td->curdata.contactid;
630 if (quirks & MT_QUIRK_CYPRESS)
631 return cypress_compute_slot(td);
633 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
634 return td->num_received;
636 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
637 return td->curdata.contactid - 1;
639 return input_mt_get_slot_by_key(input, td->curdata.contactid);
643 * this function is called when a whole contact has been processed,
644 * so that it can assign it to a slot and store the data there
646 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
648 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
649 td->num_received >= td->num_expected)
652 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
654 int slotnum = mt_compute_slot(td, input);
655 struct mt_slot *s = &td->curdata;
656 struct input_mt *mt = input->mt;
658 if (slotnum < 0 || slotnum >= td->maxcontacts)
661 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
662 struct input_mt_slot *slot = &mt->slots[slotnum];
663 if (input_mt_is_active(slot) &&
664 input_mt_is_used(mt, slot))
668 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
669 s->confidence_state = 1;
670 active = (s->touch_state || s->inrange_state) &&
673 input_mt_slot(input, slotnum);
674 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
676 /* this finger is in proximity of the sensor */
677 int wide = (s->w > s->h);
678 int major = max(s->w, s->h);
679 int minor = min(s->w, s->h);
682 * divided by two to match visual scale of touch
683 * for devices with this quirk
685 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
690 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
691 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
692 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
693 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
694 input_event(input, EV_ABS, ABS_MT_DISTANCE,
696 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
697 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
698 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
699 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
701 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
709 * this function is called when a whole packet has been received and processed,
710 * so that it can decide what to send to the input layer.
712 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
714 input_mt_sync_frame(input);
716 td->num_received = 0;
717 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
718 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
720 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
721 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
724 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
725 struct hid_usage *usage, __s32 value)
727 /* we will handle the hidinput part later, now remains hiddev */
728 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
729 hid->hiddev_hid_event(hid, field, usage, value);
734 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
735 struct hid_usage *usage, __s32 value)
737 struct mt_device *td = hid_get_drvdata(hid);
738 __s32 quirks = td->mtclass.quirks;
739 struct input_dev *input = field->hidinput->input;
741 if (hid->claimed & HID_CLAIMED_INPUT) {
742 switch (usage->hid) {
744 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
745 td->curvalid = value;
746 if (quirks & MT_QUIRK_HOVERING)
747 td->curdata.inrange_state = value;
749 case HID_DG_TIPSWITCH:
750 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
751 td->curvalid = value;
752 td->curdata.touch_state = value;
754 case HID_DG_CONFIDENCE:
755 if (quirks & MT_QUIRK_CONFIDENCE)
756 td->curdata.confidence_state = value;
757 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
758 td->curvalid = value;
760 case HID_DG_CONTACTID:
761 td->curdata.contactid = value;
763 case HID_DG_TIPPRESSURE:
764 td->curdata.p = value;
767 if (usage->code == ABS_MT_TOOL_X)
768 td->curdata.cx = value;
770 td->curdata.x = value;
773 if (usage->code == ABS_MT_TOOL_Y)
774 td->curdata.cy = value;
776 td->curdata.y = value;
779 td->curdata.w = value;
782 td->curdata.h = value;
784 case HID_DG_CONTACTCOUNT:
792 input_event(input, usage->type, usage->code,
797 if (usage->usage_index + 1 == field->report_count) {
798 /* we only take into account the last report. */
799 if (usage->hid == td->last_slot_field)
800 mt_complete_slot(td, field->hidinput->input);
806 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
808 struct mt_device *td = hid_get_drvdata(hid);
809 struct hid_field *field;
813 /* sticky fingers release in progress, abort */
814 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
818 * Includes multi-packet support where subsequent
819 * packets are sent with zero contactcount.
821 if (td->cc_index >= 0) {
822 struct hid_field *field = report->field[td->cc_index];
823 int value = field->value[td->cc_value_index];
825 td->num_expected = value;
828 for (r = 0; r < report->maxfield; r++) {
829 field = report->field[r];
830 count = field->report_count;
832 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
835 for (n = 0; n < count; n++)
836 mt_process_mt_event(hid, field, &field->usage[n],
840 if (td->num_received >= td->num_expected)
841 mt_sync_frame(td, report->field[0]->hidinput->input);
844 * Windows 8 specs says 2 things:
845 * - once a contact has been reported, it has to be reported in each
847 * - the report rate when fingers are present has to be at least
848 * the refresh rate of the screen, 60 or 120 Hz
850 * I interprete this that the specification forces a report rate of
851 * at least 60 Hz for a touchscreen to be certified.
852 * Which means that if we do not get a report whithin 16 ms, either
853 * something wrong happens, either the touchscreen forgets to send
854 * a release. Taking a reasonable margin allows to remove issues
855 * with USB communication or the load of the machine.
857 * Given that Win 8 devices are forced to send a release, this will
858 * only affect laggish machines and the ones that have a firmware
861 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
862 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
863 mod_timer(&td->release_timer,
864 jiffies + msecs_to_jiffies(100));
866 del_timer(&td->release_timer);
869 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
872 static int mt_touch_input_configured(struct hid_device *hdev,
873 struct hid_input *hi)
875 struct mt_device *td = hid_get_drvdata(hdev);
876 struct mt_class *cls = &td->mtclass;
877 struct input_dev *input = hi->input;
880 if (!td->maxcontacts)
881 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
884 if (td->serial_maybe)
885 mt_post_parse_default_settings(td);
887 if (cls->is_indirect)
888 td->mt_flags |= INPUT_MT_POINTER;
890 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
891 td->mt_flags |= INPUT_MT_DROP_UNUSED;
893 /* check for clickpads */
894 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
895 td->is_buttonpad = true;
897 if (td->is_buttonpad)
898 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
900 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
908 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
909 struct hid_field *field, struct hid_usage *usage,
910 unsigned long **bit, int *max)
912 struct mt_device *td = hid_get_drvdata(hdev);
915 * If mtclass.export_all_inputs is not set, only map fields from
916 * TouchScreen or TouchPad collections. We need to ignore fields
917 * that belong to other collections such as Mouse that might have
918 * the same GenericDesktop usages.
920 if (!td->mtclass.export_all_inputs &&
921 field->application != HID_DG_TOUCHSCREEN &&
922 field->application != HID_DG_PEN &&
923 field->application != HID_DG_TOUCHPAD &&
924 field->application != HID_GD_KEYBOARD &&
925 field->application != HID_CP_CONSUMER_CONTROL)
929 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
931 * The check for mt_report_id ensures we don't process
932 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
933 * collection, but within the report ID.
935 if (field->physical == HID_DG_STYLUS)
937 else if ((field->physical == 0) &&
938 (field->report->id != td->mt_report_id) &&
939 (td->mt_report_id != -1))
942 if (field->application == HID_DG_TOUCHSCREEN ||
943 field->application == HID_DG_TOUCHPAD)
944 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
946 /* let hid-core decide for the others */
950 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
951 struct hid_field *field, struct hid_usage *usage,
952 unsigned long **bit, int *max)
955 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
958 if (field->physical == HID_DG_STYLUS)
961 if (field->application == HID_DG_TOUCHSCREEN ||
962 field->application == HID_DG_TOUCHPAD) {
963 /* We own these mappings, tell hid-input to ignore them */
967 /* let hid-core decide for the others */
971 static int mt_event(struct hid_device *hid, struct hid_field *field,
972 struct hid_usage *usage, __s32 value)
974 struct mt_device *td = hid_get_drvdata(hid);
976 if (field->report->id == td->mt_report_id)
977 return mt_touch_event(hid, field, usage, value);
982 static void mt_report(struct hid_device *hid, struct hid_report *report)
984 struct mt_device *td = hid_get_drvdata(hid);
985 struct hid_field *field = report->field[0];
987 if (!(hid->claimed & HID_CLAIMED_INPUT))
990 if (report->id == td->mt_report_id)
991 return mt_touch_report(hid, report);
993 if (field && field->hidinput && field->hidinput->input)
994 input_sync(field->hidinput->input);
997 static void mt_set_input_mode(struct hid_device *hdev)
999 struct mt_device *td = hid_get_drvdata(hdev);
1000 struct hid_report *r;
1001 struct hid_report_enum *re;
1002 struct mt_class *cls = &td->mtclass;
1006 if (td->inputmode < 0)
1009 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1010 r = re->report_id_hash[td->inputmode];
1012 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1013 report_len = hid_report_len(r);
1014 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1016 hid_err(hdev, "failed to allocate buffer for report\n");
1019 hid_hw_raw_request(hdev, r->id, buf, report_len,
1021 HID_REQ_GET_REPORT);
1024 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1025 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1029 static void mt_set_maxcontacts(struct hid_device *hdev)
1031 struct mt_device *td = hid_get_drvdata(hdev);
1032 struct hid_report *r;
1033 struct hid_report_enum *re;
1036 if (td->maxcontact_report_id < 0)
1039 if (!td->mtclass.maxcontacts)
1042 re = &hdev->report_enum[HID_FEATURE_REPORT];
1043 r = re->report_id_hash[td->maxcontact_report_id];
1045 max = td->mtclass.maxcontacts;
1046 fieldmax = r->field[0]->logical_maximum;
1047 max = min(fieldmax, max);
1048 if (r->field[0]->value[0] != max) {
1049 r->field[0]->value[0] = max;
1050 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1055 static void mt_post_parse_default_settings(struct mt_device *td)
1057 __s32 quirks = td->mtclass.quirks;
1059 /* unknown serial device needs special quirks */
1060 if (td->touches_by_report == 1) {
1061 quirks |= MT_QUIRK_ALWAYS_VALID;
1062 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1063 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1064 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1065 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1068 td->mtclass.quirks = quirks;
1071 static void mt_post_parse(struct mt_device *td)
1073 struct mt_fields *f = td->fields;
1074 struct mt_class *cls = &td->mtclass;
1076 if (td->touches_by_report > 0) {
1077 int field_count_per_touch = f->length / td->touches_by_report;
1078 td->last_slot_field = f->usages[field_count_per_touch - 1];
1081 if (td->cc_index < 0)
1082 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1085 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1087 struct mt_device *td = hid_get_drvdata(hdev);
1089 const char *suffix = NULL;
1090 struct hid_field *field = hi->report->field[0];
1093 if (hi->report->id == td->mt_report_id) {
1094 ret = mt_touch_input_configured(hdev, hi);
1100 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1101 * for the stylus. Check this first, and then rely on the application
1104 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1106 /* force BTN_STYLUS to allow tablet matching in udev */
1107 __set_bit(BTN_STYLUS, hi->input->keybit);
1109 switch (field->application) {
1110 case HID_GD_KEYBOARD:
1111 suffix = "Keyboard";
1121 /* force BTN_STYLUS to allow tablet matching in udev */
1122 __set_bit(BTN_STYLUS, hi->input->keybit);
1124 case HID_DG_TOUCHSCREEN:
1125 /* we do not set suffix = "Touchscreen" */
1127 case HID_DG_TOUCHPAD:
1128 suffix = "Touchpad";
1130 case HID_GD_SYSTEM_CONTROL:
1131 suffix = "System Control";
1133 case HID_CP_CONSUMER_CONTROL:
1134 suffix = "Consumer Control";
1143 name = devm_kzalloc(&hi->input->dev,
1144 strlen(hdev->name) + strlen(suffix) + 2,
1147 sprintf(name, "%s %s", hdev->name, suffix);
1148 hi->input->name = name;
1155 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1157 if (field->usage[0].hid != usage ||
1158 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1161 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1162 field->flags |= HID_MAIN_ITEM_VARIABLE;
1165 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1167 struct hid_report *report;
1170 list_for_each_entry(report,
1171 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1174 if (!report->maxfield)
1177 for (i = 0; i < report->maxfield; i++)
1178 if (report->field[i]->maxusage >= 1)
1179 mt_fix_const_field(report->field[i], usage);
1183 static void mt_release_contacts(struct hid_device *hid)
1185 struct hid_input *hidinput;
1186 struct mt_device *td = hid_get_drvdata(hid);
1188 list_for_each_entry(hidinput, &hid->inputs, list) {
1189 struct input_dev *input_dev = hidinput->input;
1190 struct input_mt *mt = input_dev->mt;
1194 for (i = 0; i < mt->num_slots; i++) {
1195 input_mt_slot(input_dev, i);
1196 input_mt_report_slot_state(input_dev,
1200 input_mt_sync_frame(input_dev);
1201 input_sync(input_dev);
1205 td->num_received = 0;
1208 static void mt_expired_timeout(unsigned long arg)
1210 struct hid_device *hdev = (void *)arg;
1211 struct mt_device *td = hid_get_drvdata(hdev);
1214 * An input report came in just before we release the sticky fingers,
1215 * it will take care of the sticky fingers.
1217 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1219 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1220 mt_release_contacts(hdev);
1221 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1224 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1227 struct mt_device *td;
1228 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1230 for (i = 0; mt_classes[i].name ; i++) {
1231 if (id->driver_data == mt_classes[i].name) {
1232 mtclass = &(mt_classes[i]);
1237 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1239 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1242 td->mtclass = *mtclass;
1244 td->maxcontact_report_id = -1;
1245 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1247 td->mt_report_id = -1;
1248 hid_set_drvdata(hdev, td);
1250 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1253 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1257 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1258 td->serial_maybe = true;
1261 * Store the initial quirk state
1263 td->initial_quirks = hdev->quirks;
1265 /* This allows the driver to correctly support devices
1266 * that emit events over several HID messages.
1268 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1271 * This allows the driver to handle different input sensors
1272 * that emits events through different reports on the same HID
1275 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1276 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1279 * Some multitouch screens do not like to be polled for input
1280 * reports. Fortunately, the Win8 spec says that all touches
1281 * should be sent during each report, making the initialization
1282 * of input reports unnecessary. For Win7 devices, well, let's hope
1283 * they will still be happy (this is only be a problem if a touch
1284 * was already there while probing the device).
1286 * In addition some touchpads do not behave well if we read
1287 * all feature reports from them. Instead we prevent
1288 * initial report fetching and then selectively fetch each
1289 * report we are interested in.
1291 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1293 setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev);
1295 ret = hid_parse(hdev);
1299 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1300 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1302 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1306 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1308 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1311 mt_set_maxcontacts(hdev);
1312 mt_set_input_mode(hdev);
1314 /* release .fields memory as it is not used anymore */
1315 devm_kfree(&hdev->dev, td->fields);
1322 static int mt_reset_resume(struct hid_device *hdev)
1324 mt_release_contacts(hdev);
1325 mt_set_maxcontacts(hdev);
1326 mt_set_input_mode(hdev);
1330 static int mt_resume(struct hid_device *hdev)
1332 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1333 * It should be safe to send it to other devices too.
1334 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1336 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1342 static void mt_remove(struct hid_device *hdev)
1344 struct mt_device *td = hid_get_drvdata(hdev);
1346 del_timer_sync(&td->release_timer);
1348 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1350 hdev->quirks = td->initial_quirks;
1354 * This list contains only:
1355 * - VID/PID of products not working with the default multitouch handling
1356 * - 2 generic rules.
1357 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1359 static const struct hid_device_id mt_devices[] = {
1362 { .driver_data = MT_CLS_3M,
1363 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1364 USB_DEVICE_ID_3M1968) },
1365 { .driver_data = MT_CLS_3M,
1366 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1367 USB_DEVICE_ID_3M2256) },
1368 { .driver_data = MT_CLS_3M,
1369 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1370 USB_DEVICE_ID_3M3266) },
1373 { .driver_data = MT_CLS_WIN_8_DUAL,
1374 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1375 USB_VENDOR_ID_ALPS_JP,
1376 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1377 { .driver_data = MT_CLS_WIN_8_DUAL,
1378 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1379 USB_VENDOR_ID_ALPS_JP,
1380 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1383 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1384 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1385 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1388 { .driver_data = MT_CLS_SERIAL,
1389 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1390 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1392 /* Baanto multitouch devices */
1393 { .driver_data = MT_CLS_NSMU,
1394 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1395 USB_DEVICE_ID_BAANTO_MT_190W2) },
1398 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1399 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1400 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1401 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1402 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1403 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1405 /* Chunghwa Telecom touch panels */
1406 { .driver_data = MT_CLS_NSMU,
1407 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1408 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1410 /* CJTouch panels */
1411 { .driver_data = MT_CLS_NSMU,
1412 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1413 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1414 { .driver_data = MT_CLS_NSMU,
1415 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1416 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1418 /* CVTouch panels */
1419 { .driver_data = MT_CLS_NSMU,
1420 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1421 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1423 /* eGalax devices (resistive) */
1424 { .driver_data = MT_CLS_EGALAX,
1425 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1426 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1427 { .driver_data = MT_CLS_EGALAX,
1428 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1429 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1431 /* eGalax devices (capacitive) */
1432 { .driver_data = MT_CLS_EGALAX_SERIAL,
1433 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1434 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1435 { .driver_data = MT_CLS_EGALAX,
1436 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1437 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1438 { .driver_data = MT_CLS_EGALAX_SERIAL,
1439 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1440 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1441 { .driver_data = MT_CLS_EGALAX_SERIAL,
1442 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1443 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1444 { .driver_data = MT_CLS_EGALAX_SERIAL,
1445 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1446 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1447 { .driver_data = MT_CLS_EGALAX_SERIAL,
1448 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1449 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1450 { .driver_data = MT_CLS_EGALAX,
1451 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1452 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1453 { .driver_data = MT_CLS_EGALAX,
1454 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1455 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1456 { .driver_data = MT_CLS_EGALAX_SERIAL,
1457 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1458 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1459 { .driver_data = MT_CLS_EGALAX,
1460 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1461 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1462 { .driver_data = MT_CLS_EGALAX,
1463 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1464 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1465 { .driver_data = MT_CLS_EGALAX,
1466 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1467 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1468 { .driver_data = MT_CLS_EGALAX,
1469 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1470 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1471 { .driver_data = MT_CLS_EGALAX_SERIAL,
1472 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1473 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1474 { .driver_data = MT_CLS_EGALAX_SERIAL,
1475 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1476 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1477 { .driver_data = MT_CLS_EGALAX_SERIAL,
1478 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1479 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1481 /* Elitegroup panel */
1482 { .driver_data = MT_CLS_SERIAL,
1483 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1484 USB_DEVICE_ID_ELITEGROUP_05D8) },
1486 /* Flatfrog Panels */
1487 { .driver_data = MT_CLS_FLATFROG,
1488 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1489 USB_DEVICE_ID_MULTITOUCH_3200) },
1491 /* FocalTech Panels */
1492 { .driver_data = MT_CLS_SERIAL,
1493 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1494 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1496 /* GeneralTouch panel */
1497 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1498 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1499 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1500 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1501 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1502 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1503 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1504 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1505 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1506 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1507 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1508 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1509 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1510 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1511 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1512 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1513 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1514 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1515 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1516 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1517 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1519 /* Gametel game controller */
1520 { .driver_data = MT_CLS_NSMU,
1521 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1522 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1524 /* GoodTouch panels */
1525 { .driver_data = MT_CLS_NSMU,
1526 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1527 USB_DEVICE_ID_GOODTOUCH_000f) },
1530 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1531 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1532 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1534 /* Ilitek dual touch panel */
1535 { .driver_data = MT_CLS_NSMU,
1536 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1537 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1539 /* LG Melfas panel */
1540 { .driver_data = MT_CLS_LG,
1541 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1542 USB_DEVICE_ID_LG_MELFAS_MT) },
1545 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1546 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1547 USB_DEVICE_ID_ASUS_T91MT)},
1548 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1549 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1550 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1551 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1552 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1553 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1555 /* Panasonic panels */
1556 { .driver_data = MT_CLS_PANASONIC,
1557 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1558 USB_DEVICE_ID_PANABOARD_UBT780) },
1559 { .driver_data = MT_CLS_PANASONIC,
1560 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1561 USB_DEVICE_ID_PANABOARD_UBT880) },
1564 { .driver_data = MT_CLS_NSMU,
1565 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1566 USB_DEVICE_ID_NOVATEK_PCT) },
1569 { .driver_data = MT_CLS_NSMU,
1570 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1571 USB_VENDOR_ID_NTRIG, 0x1b05) },
1573 /* PixArt optical touch screen */
1574 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1575 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1576 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1577 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1578 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1579 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1580 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1581 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1582 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1584 /* PixCir-based panels */
1585 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1586 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1587 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1589 /* Quanta-based panels */
1590 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1591 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1592 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1594 /* Stantum panels */
1595 { .driver_data = MT_CLS_CONFIDENCE,
1596 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1597 USB_DEVICE_ID_MTP_STM)},
1599 /* TopSeed panels */
1600 { .driver_data = MT_CLS_TOPSEED,
1601 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1602 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1604 /* Touch International panels */
1605 { .driver_data = MT_CLS_NSMU,
1606 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1607 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1610 { .driver_data = MT_CLS_NSMU,
1611 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1612 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1613 { .driver_data = MT_CLS_NSMU,
1614 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1615 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1618 { .driver_data = MT_CLS_VTL,
1619 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1620 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1622 /* Wistron panels */
1623 { .driver_data = MT_CLS_NSMU,
1624 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1625 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1628 { .driver_data = MT_CLS_NSMU,
1629 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1630 USB_DEVICE_ID_XAT_CSR) },
1633 { .driver_data = MT_CLS_NSMU,
1634 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1635 USB_DEVICE_ID_XIROKU_SPX) },
1636 { .driver_data = MT_CLS_NSMU,
1637 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1638 USB_DEVICE_ID_XIROKU_MPX) },
1639 { .driver_data = MT_CLS_NSMU,
1640 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1641 USB_DEVICE_ID_XIROKU_CSR) },
1642 { .driver_data = MT_CLS_NSMU,
1643 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1644 USB_DEVICE_ID_XIROKU_SPX1) },
1645 { .driver_data = MT_CLS_NSMU,
1646 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1647 USB_DEVICE_ID_XIROKU_MPX1) },
1648 { .driver_data = MT_CLS_NSMU,
1649 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1650 USB_DEVICE_ID_XIROKU_CSR1) },
1651 { .driver_data = MT_CLS_NSMU,
1652 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1653 USB_DEVICE_ID_XIROKU_SPX2) },
1654 { .driver_data = MT_CLS_NSMU,
1655 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1656 USB_DEVICE_ID_XIROKU_MPX2) },
1657 { .driver_data = MT_CLS_NSMU,
1658 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1659 USB_DEVICE_ID_XIROKU_CSR2) },
1661 /* Google MT devices */
1662 { .driver_data = MT_CLS_GOOGLE,
1663 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1664 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1666 /* Generic MT device */
1667 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1669 /* Generic Win 8 certified MT device */
1670 { .driver_data = MT_CLS_WIN_8,
1671 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1672 HID_ANY_ID, HID_ANY_ID) },
1675 MODULE_DEVICE_TABLE(hid, mt_devices);
1677 static const struct hid_usage_id mt_grabbed_usages[] = {
1678 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1679 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1682 static struct hid_driver mt_driver = {
1683 .name = "hid-multitouch",
1684 .id_table = mt_devices,
1686 .remove = mt_remove,
1687 .input_mapping = mt_input_mapping,
1688 .input_mapped = mt_input_mapped,
1689 .input_configured = mt_input_configured,
1690 .feature_mapping = mt_feature_mapping,
1691 .usage_table = mt_grabbed_usages,
1693 .report = mt_report,
1695 .reset_resume = mt_reset_resume,
1696 .resume = mt_resume,
1699 module_hid_driver(mt_driver);