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)
75 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
77 #define MT_INPUTMODE_TOUCHSCREEN 0x02
78 #define MT_INPUTMODE_TOUCHPAD 0x03
80 #define MT_BUTTONTYPE_CLICKPAD 0
82 #define MT_IO_FLAGS_RUNNING 0
83 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
84 #define MT_IO_FLAGS_PENDING_SLOTS 2
87 __s32 x, y, cx, cy, p, w, h;
88 __s32 contactid; /* the device ContactID assigned to this slot */
89 bool touch_state; /* is the touch valid? */
90 bool inrange_state; /* is the finger in proximity of the sensor? */
91 bool confidence_state; /* is the touch made by a finger? */
95 __s32 name; /* MT_CLS */
97 __s32 sn_move; /* Signal/noise ratio for move events */
98 __s32 sn_width; /* Signal/noise ratio for width events */
99 __s32 sn_height; /* Signal/noise ratio for height events */
100 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
102 bool is_indirect; /* true for touchpads */
103 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
107 unsigned usages[HID_MAX_FIELDS];
112 struct mt_slot curdata; /* placeholder of incoming data */
113 struct mt_class mtclass; /* our mt device class */
114 struct timer_list release_timer; /* to release sticky fingers */
115 struct mt_fields *fields; /* temporary placeholder for storing the
117 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
118 int cc_index; /* contact count field index in the report */
119 int cc_value_index; /* contact count value index in the field */
120 unsigned last_slot_field; /* the last field of a slot */
121 unsigned mt_report_id; /* the report ID of the multitouch device */
122 unsigned long initial_quirks; /* initial quirks state */
123 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
124 __s16 inputmode_index; /* InputMode HID feature index in the report */
125 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
126 -1 if non-existent */
127 __u8 inputmode_value; /* InputMode HID feature value */
128 __u8 num_received; /* how many contacts we received */
129 __u8 num_expected; /* expected last contact index */
131 __u8 touches_by_report; /* how many touches are present in one report:
132 * 1 means we should use a serial protocol
133 * > 1 means hybrid (multitouch) protocol */
134 __u8 buttons_count; /* number of physical buttons per touchpad */
135 bool is_buttonpad; /* is this device a button pad? */
136 bool serial_maybe; /* need to check for serial protocol */
137 bool curvalid; /* is the current contact valid? */
138 unsigned mt_flags; /* flags to pass to input-mt */
141 static void mt_post_parse_default_settings(struct mt_device *td);
142 static void mt_post_parse(struct mt_device *td);
144 /* classes of device behavior */
145 #define MT_CLS_DEFAULT 0x0001
147 #define MT_CLS_SERIAL 0x0002
148 #define MT_CLS_CONFIDENCE 0x0003
149 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
150 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
151 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
152 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
153 /* reserved 0x0008 */
154 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
155 #define MT_CLS_NSMU 0x000a
156 /* reserved 0x0010 */
157 /* reserved 0x0011 */
158 #define MT_CLS_WIN_8 0x0012
159 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
160 #define MT_CLS_WIN_8_DUAL 0x0014
162 /* vendor specific classes */
163 #define MT_CLS_3M 0x0101
164 /* reserved 0x0102 */
165 #define MT_CLS_EGALAX 0x0103
166 #define MT_CLS_EGALAX_SERIAL 0x0104
167 #define MT_CLS_TOPSEED 0x0105
168 #define MT_CLS_PANASONIC 0x0106
169 #define MT_CLS_FLATFROG 0x0107
170 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
171 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
172 #define MT_CLS_LG 0x010a
173 #define MT_CLS_ASUS 0x010b
174 #define MT_CLS_VTL 0x0110
175 #define MT_CLS_GOOGLE 0x0111
177 #define MT_DEFAULT_MAXCONTACT 10
178 #define MT_MAX_MAXCONTACT 250
180 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
181 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
184 * these device-dependent functions determine what slot corresponds
185 * to a valid contact that was just read.
188 static int cypress_compute_slot(struct mt_device *td)
190 if (td->curdata.contactid != 0 || td->num_received == 0)
191 return td->curdata.contactid;
196 static struct mt_class mt_classes[] = {
197 { .name = MT_CLS_DEFAULT,
198 .quirks = MT_QUIRK_ALWAYS_VALID |
199 MT_QUIRK_CONTACT_CNT_ACCURATE },
200 { .name = MT_CLS_NSMU,
201 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
202 { .name = MT_CLS_SERIAL,
203 .quirks = MT_QUIRK_ALWAYS_VALID},
204 { .name = MT_CLS_CONFIDENCE,
205 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
206 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
207 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
208 MT_QUIRK_SLOT_IS_CONTACTID },
209 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
210 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
211 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
212 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
213 .quirks = MT_QUIRK_VALID_IS_INRANGE |
214 MT_QUIRK_SLOT_IS_CONTACTID,
216 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
217 .quirks = MT_QUIRK_VALID_IS_INRANGE |
218 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
220 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
221 .quirks = MT_QUIRK_VALID_IS_INRANGE |
222 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
223 { .name = MT_CLS_WIN_8,
224 .quirks = MT_QUIRK_ALWAYS_VALID |
225 MT_QUIRK_IGNORE_DUPLICATES |
227 MT_QUIRK_CONTACT_CNT_ACCURATE |
228 MT_QUIRK_STICKY_FINGERS },
229 { .name = MT_CLS_EXPORT_ALL_INPUTS,
230 .quirks = MT_QUIRK_ALWAYS_VALID |
231 MT_QUIRK_CONTACT_CNT_ACCURATE,
232 .export_all_inputs = true },
233 { .name = MT_CLS_WIN_8_DUAL,
234 .quirks = MT_QUIRK_ALWAYS_VALID |
235 MT_QUIRK_IGNORE_DUPLICATES |
237 MT_QUIRK_CONTACT_CNT_ACCURATE,
238 .export_all_inputs = true },
241 * vendor specific classes
244 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
245 MT_QUIRK_SLOT_IS_CONTACTID |
246 MT_QUIRK_TOUCH_SIZE_SCALING,
252 { .name = MT_CLS_EGALAX,
253 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
254 MT_QUIRK_VALID_IS_INRANGE,
258 { .name = MT_CLS_EGALAX_SERIAL,
259 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
260 MT_QUIRK_ALWAYS_VALID,
264 { .name = MT_CLS_TOPSEED,
265 .quirks = MT_QUIRK_ALWAYS_VALID,
269 { .name = MT_CLS_PANASONIC,
270 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
272 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
273 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
274 MT_QUIRK_VALID_IS_INRANGE |
275 MT_QUIRK_SLOT_IS_CONTACTID,
278 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
279 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
280 MT_QUIRK_SLOT_IS_CONTACTID
283 { .name = MT_CLS_FLATFROG,
284 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
290 .quirks = MT_QUIRK_ALWAYS_VALID |
291 MT_QUIRK_FIX_CONST_CONTACT_ID |
292 MT_QUIRK_IGNORE_DUPLICATES |
294 MT_QUIRK_CONTACT_CNT_ACCURATE },
295 { .name = MT_CLS_ASUS,
296 .quirks = MT_QUIRK_ALWAYS_VALID |
297 MT_QUIRK_CONTACT_CNT_ACCURATE |
298 MT_QUIRK_ASUS_CUSTOM_UP },
299 { .name = MT_CLS_VTL,
300 .quirks = MT_QUIRK_ALWAYS_VALID |
301 MT_QUIRK_CONTACT_CNT_ACCURATE |
302 MT_QUIRK_FORCE_GET_FEATURE,
304 { .name = MT_CLS_GOOGLE,
305 .quirks = MT_QUIRK_ALWAYS_VALID |
306 MT_QUIRK_CONTACT_CNT_ACCURATE |
307 MT_QUIRK_SLOT_IS_CONTACTID |
313 static ssize_t mt_show_quirks(struct device *dev,
314 struct device_attribute *attr,
317 struct hid_device *hdev = to_hid_device(dev);
318 struct mt_device *td = hid_get_drvdata(hdev);
320 return sprintf(buf, "%u\n", td->mtclass.quirks);
323 static ssize_t mt_set_quirks(struct device *dev,
324 struct device_attribute *attr,
325 const char *buf, size_t count)
327 struct hid_device *hdev = to_hid_device(dev);
328 struct mt_device *td = hid_get_drvdata(hdev);
332 if (kstrtoul(buf, 0, &val))
335 td->mtclass.quirks = val;
337 if (td->cc_index < 0)
338 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
343 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
345 static struct attribute *sysfs_attrs[] = {
346 &dev_attr_quirks.attr,
350 static const struct attribute_group mt_attribute_group = {
354 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
356 struct mt_device *td = hid_get_drvdata(hdev);
358 u32 size = hid_report_len(report);
362 * Do not fetch the feature report if the device has been explicitly
363 * marked as non-capable.
365 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
368 buf = hid_alloc_report_buf(report, GFP_KERNEL);
372 ret = hid_hw_raw_request(hdev, report->id, buf, size,
373 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
375 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
378 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
381 dev_warn(&hdev->dev, "failed to report feature\n");
387 static void mt_feature_mapping(struct hid_device *hdev,
388 struct hid_field *field, struct hid_usage *usage)
390 struct mt_device *td = hid_get_drvdata(hdev);
392 switch (usage->hid) {
393 case HID_DG_INPUTMODE:
394 /* Ignore if value index is out of bounds. */
395 if (usage->usage_index >= field->report_count) {
396 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
400 if (td->inputmode < 0) {
401 td->inputmode = field->report->id;
402 td->inputmode_index = usage->usage_index;
405 * Some elan panels wrongly declare 2 input mode
406 * features, and silently ignore when we set the
407 * value in the second field. Skip the second feature
408 * and hope for the best.
411 "Ignoring the extra HID_DG_INPUTMODE\n");
415 case HID_DG_CONTACTMAX:
416 mt_get_feature(hdev, field->report);
418 td->maxcontact_report_id = field->report->id;
419 td->maxcontacts = field->value[0];
420 if (!td->maxcontacts &&
421 field->logical_maximum <= MT_MAX_MAXCONTACT)
422 td->maxcontacts = field->logical_maximum;
423 if (td->mtclass.maxcontacts)
424 /* check if the maxcontacts is given by the class */
425 td->maxcontacts = td->mtclass.maxcontacts;
428 case HID_DG_BUTTONTYPE:
429 if (usage->usage_index >= field->report_count) {
430 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
434 mt_get_feature(hdev, field->report);
435 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
436 td->is_buttonpad = true;
440 /* Retrieve the Win8 blob once to enable some devices */
441 if (usage->usage_index == 0)
442 mt_get_feature(hdev, field->report);
447 static void set_abs(struct input_dev *input, unsigned int code,
448 struct hid_field *field, int snratio)
450 int fmin = field->logical_minimum;
451 int fmax = field->logical_maximum;
452 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
453 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
454 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
457 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
458 struct hid_input *hi)
460 struct mt_fields *f = td->fields;
462 if (f->length >= HID_MAX_FIELDS)
465 f->usages[f->length++] = usage->hid;
468 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
469 struct hid_field *field, struct hid_usage *usage,
470 unsigned long **bit, int *max)
472 struct mt_device *td = hid_get_drvdata(hdev);
473 struct mt_class *cls = &td->mtclass;
475 struct hid_usage *prev_usage = NULL;
477 if (field->application == HID_DG_TOUCHSCREEN)
478 td->mt_flags |= INPUT_MT_DIRECT;
481 * Model touchscreens providing buttons as touchpads.
483 if (field->application == HID_DG_TOUCHPAD ||
484 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
485 td->mt_flags |= INPUT_MT_POINTER;
486 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
489 /* count the buttons on touchpads */
490 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
493 if (usage->usage_index)
494 prev_usage = &field->usage[usage->usage_index - 1];
496 switch (usage->hid & HID_USAGE_PAGE) {
499 switch (usage->hid) {
501 if (prev_usage && (prev_usage->hid == usage->hid)) {
502 hid_map_usage(hi, usage, bit, max,
503 EV_ABS, ABS_MT_TOOL_X);
504 set_abs(hi->input, ABS_MT_TOOL_X, field,
507 hid_map_usage(hi, usage, bit, max,
508 EV_ABS, ABS_MT_POSITION_X);
509 set_abs(hi->input, ABS_MT_POSITION_X, field,
513 mt_store_field(usage, td, hi);
516 if (prev_usage && (prev_usage->hid == usage->hid)) {
517 hid_map_usage(hi, usage, bit, max,
518 EV_ABS, ABS_MT_TOOL_Y);
519 set_abs(hi->input, ABS_MT_TOOL_Y, field,
522 hid_map_usage(hi, usage, bit, max,
523 EV_ABS, ABS_MT_POSITION_Y);
524 set_abs(hi->input, ABS_MT_POSITION_Y, field,
528 mt_store_field(usage, td, hi);
533 case HID_UP_DIGITIZER:
534 switch (usage->hid) {
536 if (cls->quirks & MT_QUIRK_HOVERING) {
537 hid_map_usage(hi, usage, bit, max,
538 EV_ABS, ABS_MT_DISTANCE);
539 input_set_abs_params(hi->input,
540 ABS_MT_DISTANCE, 0, 1, 0, 0);
542 mt_store_field(usage, td, hi);
544 case HID_DG_CONFIDENCE:
545 if ((cls->name == MT_CLS_WIN_8 ||
546 cls->name == MT_CLS_WIN_8_DUAL) &&
547 field->application == HID_DG_TOUCHPAD)
548 cls->quirks |= MT_QUIRK_CONFIDENCE;
549 mt_store_field(usage, td, hi);
551 case HID_DG_TIPSWITCH:
552 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
553 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
554 mt_store_field(usage, td, hi);
556 case HID_DG_CONTACTID:
557 mt_store_field(usage, td, hi);
558 td->touches_by_report++;
559 td->mt_report_id = field->report->id;
562 hid_map_usage(hi, usage, bit, max,
563 EV_ABS, ABS_MT_TOUCH_MAJOR);
564 if (!(cls->quirks & MT_QUIRK_NO_AREA))
565 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
567 mt_store_field(usage, td, hi);
570 hid_map_usage(hi, usage, bit, max,
571 EV_ABS, ABS_MT_TOUCH_MINOR);
572 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
573 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
575 input_set_abs_params(hi->input,
576 ABS_MT_ORIENTATION, 0, 1, 0, 0);
578 mt_store_field(usage, td, hi);
580 case HID_DG_TIPPRESSURE:
581 hid_map_usage(hi, usage, bit, max,
582 EV_ABS, ABS_MT_PRESSURE);
583 set_abs(hi->input, ABS_MT_PRESSURE, field,
585 mt_store_field(usage, td, hi);
587 case HID_DG_CONTACTCOUNT:
588 /* Ignore if indexes are out of bounds. */
589 if (field->index >= field->report->maxfield ||
590 usage->usage_index >= field->report_count)
592 td->cc_index = field->index;
593 td->cc_value_index = usage->usage_index;
595 case HID_DG_CONTACTMAX:
596 /* we don't set td->last_slot_field as contactcount and
597 * contact max are global to the report */
600 /* Legacy devices use TIPSWITCH and not TOUCH.
601 * Let's just ignore this field. */
604 /* let hid-input decide for the others */
608 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
610 * MS PTP spec says that external buttons left and right have
613 if ((cls->name == MT_CLS_WIN_8 ||
614 cls->name == MT_CLS_WIN_8_DUAL) &&
615 field->application == HID_DG_TOUCHPAD &&
616 (usage->hid & HID_USAGE) > 1)
618 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
621 input_set_capability(hi->input, EV_KEY, code);
625 /* we do not want to map these: no input-oriented meaning */
632 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
634 __s32 quirks = td->mtclass.quirks;
636 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
637 return td->curdata.contactid;
639 if (quirks & MT_QUIRK_CYPRESS)
640 return cypress_compute_slot(td);
642 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
643 return td->num_received;
645 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
646 return td->curdata.contactid - 1;
648 return input_mt_get_slot_by_key(input, td->curdata.contactid);
652 * this function is called when a whole contact has been processed,
653 * so that it can assign it to a slot and store the data there
655 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
657 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
658 td->num_received >= td->num_expected)
661 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
663 int slotnum = mt_compute_slot(td, input);
664 struct mt_slot *s = &td->curdata;
665 struct input_mt *mt = input->mt;
667 if (slotnum < 0 || slotnum >= td->maxcontacts)
670 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
671 struct input_mt_slot *slot = &mt->slots[slotnum];
672 if (input_mt_is_active(slot) &&
673 input_mt_is_used(mt, slot))
677 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
678 s->confidence_state = 1;
679 active = (s->touch_state || s->inrange_state) &&
682 input_mt_slot(input, slotnum);
683 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
685 /* this finger is in proximity of the sensor */
686 int wide = (s->w > s->h);
687 int major = max(s->w, s->h);
688 int minor = min(s->w, s->h);
691 * divided by two to match visual scale of touch
692 * for devices with this quirk
694 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
699 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
700 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
701 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
702 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
703 input_event(input, EV_ABS, ABS_MT_DISTANCE,
705 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
706 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
707 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
708 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
710 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
718 * this function is called when a whole packet has been received and processed,
719 * so that it can decide what to send to the input layer.
721 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
723 input_mt_sync_frame(input);
725 td->num_received = 0;
726 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
727 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
729 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
730 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
733 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
734 struct hid_usage *usage, __s32 value)
736 /* we will handle the hidinput part later, now remains hiddev */
737 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
738 hid->hiddev_hid_event(hid, field, usage, value);
743 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
744 struct hid_usage *usage, __s32 value,
747 struct mt_device *td = hid_get_drvdata(hid);
748 __s32 cls = td->mtclass.name;
749 __s32 quirks = td->mtclass.quirks;
750 struct input_dev *input = field->hidinput->input;
752 if (hid->claimed & HID_CLAIMED_INPUT) {
753 switch (usage->hid) {
755 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
756 td->curvalid = value;
757 if (quirks & MT_QUIRK_HOVERING)
758 td->curdata.inrange_state = value;
760 case HID_DG_TIPSWITCH:
761 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
762 td->curvalid = value;
763 td->curdata.touch_state = value;
765 case HID_DG_CONFIDENCE:
766 if (quirks & MT_QUIRK_CONFIDENCE)
767 td->curdata.confidence_state = value;
768 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
769 td->curvalid = value;
771 case HID_DG_CONTACTID:
772 td->curdata.contactid = value;
774 case HID_DG_TIPPRESSURE:
775 td->curdata.p = value;
778 if (usage->code == ABS_MT_TOOL_X)
779 td->curdata.cx = value;
781 td->curdata.x = value;
784 if (usage->code == ABS_MT_TOOL_Y)
785 td->curdata.cy = value;
787 td->curdata.y = value;
790 td->curdata.w = value;
793 td->curdata.h = value;
795 case HID_DG_CONTACTCOUNT:
803 * For Win8 PTP touchpads we should only look at
804 * non finger/touch events in the first_packet of
805 * a (possible) multi-packet frame.
807 if ((cls == MT_CLS_WIN_8 || cls == MT_CLS_WIN_8_DUAL) &&
812 input_event(input, usage->type, usage->code,
817 if (usage->usage_index + 1 == field->report_count) {
818 /* we only take into account the last report. */
819 if (usage->hid == td->last_slot_field)
820 mt_complete_slot(td, field->hidinput->input);
826 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
828 struct mt_device *td = hid_get_drvdata(hid);
829 struct hid_field *field;
834 /* sticky fingers release in progress, abort */
835 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
839 * Includes multi-packet support where subsequent
840 * packets are sent with zero contactcount.
842 if (td->cc_index >= 0) {
843 struct hid_field *field = report->field[td->cc_index];
844 int value = field->value[td->cc_value_index];
846 td->num_expected = value;
849 first_packet = td->num_received == 0;
850 for (r = 0; r < report->maxfield; r++) {
851 field = report->field[r];
852 count = field->report_count;
854 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
857 for (n = 0; n < count; n++)
858 mt_process_mt_event(hid, field, &field->usage[n],
859 field->value[n], first_packet);
862 if (td->num_received >= td->num_expected)
863 mt_sync_frame(td, report->field[0]->hidinput->input);
866 * Windows 8 specs says 2 things:
867 * - once a contact has been reported, it has to be reported in each
869 * - the report rate when fingers are present has to be at least
870 * the refresh rate of the screen, 60 or 120 Hz
872 * I interprete this that the specification forces a report rate of
873 * at least 60 Hz for a touchscreen to be certified.
874 * Which means that if we do not get a report whithin 16 ms, either
875 * something wrong happens, either the touchscreen forgets to send
876 * a release. Taking a reasonable margin allows to remove issues
877 * with USB communication or the load of the machine.
879 * Given that Win 8 devices are forced to send a release, this will
880 * only affect laggish machines and the ones that have a firmware
883 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
884 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
885 mod_timer(&td->release_timer,
886 jiffies + msecs_to_jiffies(100));
888 del_timer(&td->release_timer);
891 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
894 static int mt_touch_input_configured(struct hid_device *hdev,
895 struct hid_input *hi)
897 struct mt_device *td = hid_get_drvdata(hdev);
898 struct mt_class *cls = &td->mtclass;
899 struct input_dev *input = hi->input;
902 if (!td->maxcontacts)
903 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
906 if (td->serial_maybe)
907 mt_post_parse_default_settings(td);
909 if (cls->is_indirect)
910 td->mt_flags |= INPUT_MT_POINTER;
912 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
913 td->mt_flags |= INPUT_MT_DROP_UNUSED;
915 /* check for clickpads */
916 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
917 td->is_buttonpad = true;
919 if (td->is_buttonpad)
920 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
922 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
930 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
932 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
933 struct hid_field *field, struct hid_usage *usage,
934 unsigned long **bit, int *max)
936 struct mt_device *td = hid_get_drvdata(hdev);
939 * If mtclass.export_all_inputs is not set, only map fields from
940 * TouchScreen or TouchPad collections. We need to ignore fields
941 * that belong to other collections such as Mouse that might have
942 * the same GenericDesktop usages.
944 if (!td->mtclass.export_all_inputs &&
945 field->application != HID_DG_TOUCHSCREEN &&
946 field->application != HID_DG_PEN &&
947 field->application != HID_DG_TOUCHPAD &&
948 field->application != HID_GD_KEYBOARD &&
949 field->application != HID_GD_SYSTEM_CONTROL &&
950 field->application != HID_CP_CONSUMER_CONTROL &&
951 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
952 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
953 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP))
957 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
958 * touchpad report descriptor. We need to treat these as an array to
959 * map usages to input keys.
961 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
962 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
963 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
964 set_bit(EV_REP, hi->input->evbit);
965 if (field->flags & HID_MAIN_ITEM_VARIABLE)
966 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
967 switch (usage->hid & HID_USAGE) {
968 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
969 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
970 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
971 case 0x6b: mt_map_key_clear(KEY_F21); break;
972 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
980 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
982 * The check for mt_report_id ensures we don't process
983 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
984 * collection, but within the report ID.
986 if (field->physical == HID_DG_STYLUS)
988 else if ((field->physical == 0) &&
989 (field->report->id != td->mt_report_id) &&
990 (td->mt_report_id != -1))
993 if (field->application == HID_DG_TOUCHSCREEN ||
994 field->application == HID_DG_TOUCHPAD)
995 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
997 /* let hid-core decide for the others */
1001 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1002 struct hid_field *field, struct hid_usage *usage,
1003 unsigned long **bit, int *max)
1006 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1009 if (field->physical == HID_DG_STYLUS)
1012 if (field->application == HID_DG_TOUCHSCREEN ||
1013 field->application == HID_DG_TOUCHPAD) {
1014 /* We own these mappings, tell hid-input to ignore them */
1018 /* let hid-core decide for the others */
1022 static int mt_event(struct hid_device *hid, struct hid_field *field,
1023 struct hid_usage *usage, __s32 value)
1025 struct mt_device *td = hid_get_drvdata(hid);
1027 if (field->report->id == td->mt_report_id)
1028 return mt_touch_event(hid, field, usage, value);
1033 static void mt_report(struct hid_device *hid, struct hid_report *report)
1035 struct mt_device *td = hid_get_drvdata(hid);
1036 struct hid_field *field = report->field[0];
1038 if (!(hid->claimed & HID_CLAIMED_INPUT))
1041 if (report->id == td->mt_report_id)
1042 return mt_touch_report(hid, report);
1044 if (field && field->hidinput && field->hidinput->input)
1045 input_sync(field->hidinput->input);
1048 static void mt_set_input_mode(struct hid_device *hdev)
1050 struct mt_device *td = hid_get_drvdata(hdev);
1051 struct hid_report *r;
1052 struct hid_report_enum *re;
1053 struct mt_class *cls = &td->mtclass;
1057 if (td->inputmode < 0)
1060 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1061 r = re->report_id_hash[td->inputmode];
1063 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1064 report_len = hid_report_len(r);
1065 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1067 hid_err(hdev, "failed to allocate buffer for report\n");
1070 hid_hw_raw_request(hdev, r->id, buf, report_len,
1072 HID_REQ_GET_REPORT);
1075 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1076 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1080 static void mt_set_maxcontacts(struct hid_device *hdev)
1082 struct mt_device *td = hid_get_drvdata(hdev);
1083 struct hid_report *r;
1084 struct hid_report_enum *re;
1087 if (td->maxcontact_report_id < 0)
1090 if (!td->mtclass.maxcontacts)
1093 re = &hdev->report_enum[HID_FEATURE_REPORT];
1094 r = re->report_id_hash[td->maxcontact_report_id];
1096 max = td->mtclass.maxcontacts;
1097 fieldmax = r->field[0]->logical_maximum;
1098 max = min(fieldmax, max);
1099 if (r->field[0]->value[0] != max) {
1100 r->field[0]->value[0] = max;
1101 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1106 static void mt_post_parse_default_settings(struct mt_device *td)
1108 __s32 quirks = td->mtclass.quirks;
1110 /* unknown serial device needs special quirks */
1111 if (td->touches_by_report == 1) {
1112 quirks |= MT_QUIRK_ALWAYS_VALID;
1113 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1114 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1115 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1116 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1119 td->mtclass.quirks = quirks;
1122 static void mt_post_parse(struct mt_device *td)
1124 struct mt_fields *f = td->fields;
1125 struct mt_class *cls = &td->mtclass;
1127 if (td->touches_by_report > 0) {
1128 int field_count_per_touch = f->length / td->touches_by_report;
1129 td->last_slot_field = f->usages[field_count_per_touch - 1];
1132 if (td->cc_index < 0)
1133 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1136 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1138 struct mt_device *td = hid_get_drvdata(hdev);
1139 const char *suffix = NULL;
1140 struct hid_field *field = hi->report->field[0];
1143 if (hi->report->id == td->mt_report_id) {
1144 ret = mt_touch_input_configured(hdev, hi);
1150 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1151 * for the stylus. Check this first, and then rely on the application
1154 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1156 /* force BTN_STYLUS to allow tablet matching in udev */
1157 __set_bit(BTN_STYLUS, hi->input->keybit);
1159 switch (field->application) {
1160 case HID_GD_KEYBOARD:
1161 suffix = "Keyboard";
1171 /* force BTN_STYLUS to allow tablet matching in udev */
1172 __set_bit(BTN_STYLUS, hi->input->keybit);
1174 case HID_DG_TOUCHSCREEN:
1175 /* we do not set suffix = "Touchscreen" */
1177 case HID_DG_TOUCHPAD:
1178 suffix = "Touchpad";
1180 case HID_GD_SYSTEM_CONTROL:
1181 suffix = "System Control";
1183 case HID_CP_CONSUMER_CONTROL:
1184 suffix = "Consumer Control";
1186 case HID_GD_WIRELESS_RADIO_CTLS:
1187 suffix = "Wireless Radio Control";
1189 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1190 suffix = "Custom Media Keys";
1199 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
1200 "%s %s", hdev->name, suffix);
1205 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1207 if (field->usage[0].hid != usage ||
1208 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1211 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1212 field->flags |= HID_MAIN_ITEM_VARIABLE;
1215 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1217 struct hid_report *report;
1220 list_for_each_entry(report,
1221 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1224 if (!report->maxfield)
1227 for (i = 0; i < report->maxfield; i++)
1228 if (report->field[i]->maxusage >= 1)
1229 mt_fix_const_field(report->field[i], usage);
1233 static void mt_release_contacts(struct hid_device *hid)
1235 struct hid_input *hidinput;
1236 struct mt_device *td = hid_get_drvdata(hid);
1238 list_for_each_entry(hidinput, &hid->inputs, list) {
1239 struct input_dev *input_dev = hidinput->input;
1240 struct input_mt *mt = input_dev->mt;
1244 for (i = 0; i < mt->num_slots; i++) {
1245 input_mt_slot(input_dev, i);
1246 input_mt_report_slot_state(input_dev,
1250 input_mt_sync_frame(input_dev);
1251 input_sync(input_dev);
1255 td->num_received = 0;
1258 static void mt_expired_timeout(unsigned long arg)
1260 struct hid_device *hdev = (void *)arg;
1261 struct mt_device *td = hid_get_drvdata(hdev);
1264 * An input report came in just before we release the sticky fingers,
1265 * it will take care of the sticky fingers.
1267 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1269 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1270 mt_release_contacts(hdev);
1271 clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1274 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1277 struct mt_device *td;
1278 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1280 for (i = 0; mt_classes[i].name ; i++) {
1281 if (id->driver_data == mt_classes[i].name) {
1282 mtclass = &(mt_classes[i]);
1287 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1289 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1292 td->mtclass = *mtclass;
1294 td->maxcontact_report_id = -1;
1295 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1297 td->mt_report_id = -1;
1298 hid_set_drvdata(hdev, td);
1300 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1303 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1307 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1308 td->serial_maybe = true;
1311 * Store the initial quirk state
1313 td->initial_quirks = hdev->quirks;
1315 /* This allows the driver to correctly support devices
1316 * that emit events over several HID messages.
1318 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1321 * This allows the driver to handle different input sensors
1322 * that emits events through different reports on the same HID
1325 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1326 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1329 * Some multitouch screens do not like to be polled for input
1330 * reports. Fortunately, the Win8 spec says that all touches
1331 * should be sent during each report, making the initialization
1332 * of input reports unnecessary. For Win7 devices, well, let's hope
1333 * they will still be happy (this is only be a problem if a touch
1334 * was already there while probing the device).
1336 * In addition some touchpads do not behave well if we read
1337 * all feature reports from them. Instead we prevent
1338 * initial report fetching and then selectively fetch each
1339 * report we are interested in.
1341 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1343 setup_timer(&td->release_timer, mt_expired_timeout, (long)hdev);
1345 ret = hid_parse(hdev);
1349 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1350 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1352 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1356 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1358 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1361 mt_set_maxcontacts(hdev);
1362 mt_set_input_mode(hdev);
1364 /* release .fields memory as it is not used anymore */
1365 devm_kfree(&hdev->dev, td->fields);
1372 static int mt_reset_resume(struct hid_device *hdev)
1374 mt_release_contacts(hdev);
1375 mt_set_maxcontacts(hdev);
1376 mt_set_input_mode(hdev);
1380 static int mt_resume(struct hid_device *hdev)
1382 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1383 * It should be safe to send it to other devices too.
1384 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1386 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1392 static void mt_remove(struct hid_device *hdev)
1394 struct mt_device *td = hid_get_drvdata(hdev);
1396 del_timer_sync(&td->release_timer);
1398 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1400 hdev->quirks = td->initial_quirks;
1404 * This list contains only:
1405 * - VID/PID of products not working with the default multitouch handling
1406 * - 2 generic rules.
1407 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1409 static const struct hid_device_id mt_devices[] = {
1412 { .driver_data = MT_CLS_3M,
1413 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1414 USB_DEVICE_ID_3M1968) },
1415 { .driver_data = MT_CLS_3M,
1416 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1417 USB_DEVICE_ID_3M2256) },
1418 { .driver_data = MT_CLS_3M,
1419 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1420 USB_DEVICE_ID_3M3266) },
1423 { .driver_data = MT_CLS_WIN_8_DUAL,
1424 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1425 USB_VENDOR_ID_ALPS_JP,
1426 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1427 { .driver_data = MT_CLS_WIN_8_DUAL,
1428 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1429 USB_VENDOR_ID_ALPS_JP,
1430 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1432 /* Lenovo X1 TAB Gen 2 */
1433 { .driver_data = MT_CLS_WIN_8_DUAL,
1434 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1435 USB_VENDOR_ID_LENOVO,
1436 USB_DEVICE_ID_LENOVO_X1_TAB) },
1439 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1440 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1441 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1444 { .driver_data = MT_CLS_ASUS,
1445 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1446 USB_VENDOR_ID_ASUSTEK,
1447 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1450 { .driver_data = MT_CLS_SERIAL,
1451 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1452 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1454 /* Baanto multitouch devices */
1455 { .driver_data = MT_CLS_NSMU,
1456 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1457 USB_DEVICE_ID_BAANTO_MT_190W2) },
1460 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1461 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1462 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1463 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1464 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1465 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1467 /* Chunghwa Telecom touch panels */
1468 { .driver_data = MT_CLS_NSMU,
1469 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1470 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1472 /* Cirque devices */
1473 { .driver_data = MT_CLS_WIN_8_DUAL,
1474 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1475 I2C_VENDOR_ID_CIRQUE,
1476 I2C_PRODUCT_ID_CIRQUE_121F) },
1478 /* CJTouch panels */
1479 { .driver_data = MT_CLS_NSMU,
1480 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1481 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1482 { .driver_data = MT_CLS_NSMU,
1483 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1484 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1486 /* CVTouch panels */
1487 { .driver_data = MT_CLS_NSMU,
1488 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1489 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1491 /* eGalax devices (resistive) */
1492 { .driver_data = MT_CLS_EGALAX,
1493 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1494 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1495 { .driver_data = MT_CLS_EGALAX,
1496 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1497 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1499 /* eGalax devices (capacitive) */
1500 { .driver_data = MT_CLS_EGALAX_SERIAL,
1501 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1502 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1503 { .driver_data = MT_CLS_EGALAX,
1504 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1505 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1506 { .driver_data = MT_CLS_EGALAX_SERIAL,
1507 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1508 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1509 { .driver_data = MT_CLS_EGALAX_SERIAL,
1510 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1511 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1512 { .driver_data = MT_CLS_EGALAX_SERIAL,
1513 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1514 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1515 { .driver_data = MT_CLS_EGALAX_SERIAL,
1516 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1517 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1518 { .driver_data = MT_CLS_EGALAX,
1519 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1520 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1521 { .driver_data = MT_CLS_EGALAX,
1522 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1523 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1524 { .driver_data = MT_CLS_EGALAX_SERIAL,
1525 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1526 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1527 { .driver_data = MT_CLS_EGALAX,
1528 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1529 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1530 { .driver_data = MT_CLS_EGALAX,
1531 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1532 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1533 { .driver_data = MT_CLS_EGALAX,
1534 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1535 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1536 { .driver_data = MT_CLS_EGALAX,
1537 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1538 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1539 { .driver_data = MT_CLS_EGALAX_SERIAL,
1540 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1541 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1542 { .driver_data = MT_CLS_EGALAX_SERIAL,
1543 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1544 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1545 { .driver_data = MT_CLS_EGALAX_SERIAL,
1546 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1547 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1548 { .driver_data = MT_CLS_EGALAX,
1549 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1550 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
1552 /* Elitegroup panel */
1553 { .driver_data = MT_CLS_SERIAL,
1554 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1555 USB_DEVICE_ID_ELITEGROUP_05D8) },
1557 /* Flatfrog Panels */
1558 { .driver_data = MT_CLS_FLATFROG,
1559 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1560 USB_DEVICE_ID_MULTITOUCH_3200) },
1562 /* FocalTech Panels */
1563 { .driver_data = MT_CLS_SERIAL,
1564 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1565 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1567 /* GeneralTouch panel */
1568 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1569 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1570 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1571 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1572 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1573 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1574 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1575 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1576 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1577 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1578 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1579 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1580 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1581 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1582 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1583 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1584 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1585 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1586 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1587 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1588 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1590 /* Gametel game controller */
1591 { .driver_data = MT_CLS_NSMU,
1592 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1593 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1595 /* GoodTouch panels */
1596 { .driver_data = MT_CLS_NSMU,
1597 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1598 USB_DEVICE_ID_GOODTOUCH_000f) },
1601 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1602 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1603 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1605 /* Ilitek dual touch panel */
1606 { .driver_data = MT_CLS_NSMU,
1607 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1608 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1610 /* LG Melfas panel */
1611 { .driver_data = MT_CLS_LG,
1612 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1613 USB_DEVICE_ID_LG_MELFAS_MT) },
1616 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1617 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1618 USB_DEVICE_ID_ASUS_T91MT)},
1619 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1620 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1621 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1622 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1623 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1624 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1626 /* Panasonic panels */
1627 { .driver_data = MT_CLS_PANASONIC,
1628 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1629 USB_DEVICE_ID_PANABOARD_UBT780) },
1630 { .driver_data = MT_CLS_PANASONIC,
1631 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1632 USB_DEVICE_ID_PANABOARD_UBT880) },
1635 { .driver_data = MT_CLS_NSMU,
1636 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1637 USB_DEVICE_ID_NOVATEK_PCT) },
1640 { .driver_data = MT_CLS_NSMU,
1641 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1642 USB_VENDOR_ID_NTRIG, 0x1b05) },
1644 /* PixArt optical touch screen */
1645 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1646 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1647 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1648 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1649 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1650 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1651 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1652 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1653 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1655 /* PixCir-based panels */
1656 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1657 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1658 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1660 /* Quanta-based panels */
1661 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1662 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1663 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1665 /* Stantum panels */
1666 { .driver_data = MT_CLS_CONFIDENCE,
1667 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1668 USB_DEVICE_ID_MTP_STM)},
1670 /* TopSeed panels */
1671 { .driver_data = MT_CLS_TOPSEED,
1672 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1673 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1675 /* Touch International panels */
1676 { .driver_data = MT_CLS_NSMU,
1677 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1678 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1681 { .driver_data = MT_CLS_NSMU,
1682 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1683 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1684 { .driver_data = MT_CLS_NSMU,
1685 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1686 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1689 { .driver_data = MT_CLS_VTL,
1690 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1691 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1693 /* Wistron panels */
1694 { .driver_data = MT_CLS_NSMU,
1695 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1696 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1699 { .driver_data = MT_CLS_NSMU,
1700 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1701 USB_DEVICE_ID_XAT_CSR) },
1704 { .driver_data = MT_CLS_NSMU,
1705 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1706 USB_DEVICE_ID_XIROKU_SPX) },
1707 { .driver_data = MT_CLS_NSMU,
1708 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1709 USB_DEVICE_ID_XIROKU_MPX) },
1710 { .driver_data = MT_CLS_NSMU,
1711 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1712 USB_DEVICE_ID_XIROKU_CSR) },
1713 { .driver_data = MT_CLS_NSMU,
1714 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1715 USB_DEVICE_ID_XIROKU_SPX1) },
1716 { .driver_data = MT_CLS_NSMU,
1717 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1718 USB_DEVICE_ID_XIROKU_MPX1) },
1719 { .driver_data = MT_CLS_NSMU,
1720 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1721 USB_DEVICE_ID_XIROKU_CSR1) },
1722 { .driver_data = MT_CLS_NSMU,
1723 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1724 USB_DEVICE_ID_XIROKU_SPX2) },
1725 { .driver_data = MT_CLS_NSMU,
1726 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1727 USB_DEVICE_ID_XIROKU_MPX2) },
1728 { .driver_data = MT_CLS_NSMU,
1729 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1730 USB_DEVICE_ID_XIROKU_CSR2) },
1732 /* Google MT devices */
1733 { .driver_data = MT_CLS_GOOGLE,
1734 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1735 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1737 /* Generic MT device */
1738 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1740 /* Generic Win 8 certified MT device */
1741 { .driver_data = MT_CLS_WIN_8,
1742 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1743 HID_ANY_ID, HID_ANY_ID) },
1746 MODULE_DEVICE_TABLE(hid, mt_devices);
1748 static const struct hid_usage_id mt_grabbed_usages[] = {
1749 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1750 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1753 static struct hid_driver mt_driver = {
1754 .name = "hid-multitouch",
1755 .id_table = mt_devices,
1757 .remove = mt_remove,
1758 .input_mapping = mt_input_mapping,
1759 .input_mapped = mt_input_mapped,
1760 .input_configured = mt_input_configured,
1761 .feature_mapping = mt_feature_mapping,
1762 .usage_table = mt_grabbed_usages,
1764 .report = mt_report,
1766 .reset_resume = mt_reset_resume,
1767 .resume = mt_resume,
1770 module_hid_driver(mt_driver);