1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * HID driver for multitouch panels
5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
8 * Copyright (c) 2012-2013 Red Hat, Inc
10 * This code is partly based on hid-egalax.c:
12 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
13 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
14 * Copyright (c) 2010 Canonical, Ltd.
16 * This code is partly based on hid-3m-pct.c:
18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
19 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
20 * Copyright (c) 2010 Canonical, Ltd.
27 * This driver is regularly tested thanks to the test suite in hid-tools[1].
28 * Please run these regression tests before patching this module so that
29 * your patch won't break existing known devices.
31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
34 #include <linux/device.h>
35 #include <linux/hid.h>
36 #include <linux/module.h>
37 #include <linux/slab.h>
38 #include <linux/input/mt.h>
39 #include <linux/jiffies.h>
40 #include <linux/string.h>
41 #include <linux/timer.h>
44 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
45 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
46 MODULE_DESCRIPTION("HID multitouch panels");
47 MODULE_LICENSE("GPL");
51 /* quirks to control the device */
52 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
53 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
54 #define MT_QUIRK_CYPRESS BIT(2)
55 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
56 #define MT_QUIRK_ALWAYS_VALID BIT(4)
57 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
58 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
59 #define MT_QUIRK_CONFIDENCE BIT(7)
60 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
61 #define MT_QUIRK_NO_AREA BIT(9)
62 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
63 #define MT_QUIRK_HOVERING BIT(11)
64 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
65 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
66 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
67 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
68 #define MT_QUIRK_STICKY_FINGERS BIT(16)
69 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
70 #define MT_QUIRK_WIN8_PTP_BUTTONS BIT(18)
72 #define MT_INPUTMODE_TOUCHSCREEN 0x02
73 #define MT_INPUTMODE_TOUCHPAD 0x03
75 #define MT_BUTTONTYPE_CLICKPAD 0
78 HID_LATENCY_NORMAL = 0,
82 #define MT_IO_FLAGS_RUNNING 0
83 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
84 #define MT_IO_FLAGS_PENDING_SLOTS 2
86 static const bool mtrue = true; /* default for true */
87 static const bool mfalse; /* default for false */
88 static const __s32 mzero; /* default for 0 */
90 #define DEFAULT_TRUE ((void *)&mtrue)
91 #define DEFAULT_FALSE ((void *)&mfalse)
92 #define DEFAULT_ZERO ((void *)&mzero)
95 struct list_head list;
96 __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
97 __s32 *contactid; /* the device ContactID assigned to this slot */
98 bool *tip_state; /* is the touch valid? */
99 bool *inrange_state; /* is the finger in proximity of the sensor? */
100 bool *confidence_state; /* is the touch made by a finger? */
103 struct mt_application {
104 struct list_head list;
105 unsigned int application;
106 struct list_head mt_usages; /* mt usages list */
110 __s32 *scantime; /* scantime reported */
111 __s32 scantime_logical_max; /* max value for raw scantime */
113 __s32 *raw_cc; /* contact count in the report */
114 int left_button_state; /* left button state */
115 unsigned int mt_flags; /* flags to pass to input-mt */
117 unsigned long *pending_palm_slots; /* slots where we reported palm
118 * and need to release */
120 __u8 num_received; /* how many contacts we received */
121 __u8 num_expected; /* expected last contact index */
122 __u8 buttons_count; /* number of physical buttons per touchpad */
123 __u8 touches_by_report; /* how many touches are present in one report:
124 * 1 means we should use a serial protocol
125 * > 1 means hybrid (multitouch) protocol
128 __s32 dev_time; /* the scan time provided by the device */
129 unsigned long jiffies; /* the frame's jiffies */
130 int timestamp; /* the timestamp to be sent */
131 int prev_scantime; /* scantime reported previously */
133 bool have_contact_count;
137 __s32 name; /* MT_CLS */
139 __s32 sn_move; /* Signal/noise ratio for move events */
140 __s32 sn_width; /* Signal/noise ratio for width events */
141 __s32 sn_height; /* Signal/noise ratio for height events */
142 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
144 bool is_indirect; /* true for touchpads */
145 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
148 struct mt_report_data {
149 struct list_head list;
150 struct hid_report *report;
151 struct mt_application *application;
152 bool is_mt_collection;
156 struct mt_class mtclass; /* our mt device class */
157 struct timer_list release_timer; /* to release sticky fingers */
158 struct hid_device *hdev; /* hid_device we're attached to */
159 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
160 __u8 inputmode_value; /* InputMode HID feature value */
162 bool is_buttonpad; /* is this device a button pad? */
163 bool serial_maybe; /* need to check for serial protocol */
165 struct list_head applications;
166 struct list_head reports;
169 static void mt_post_parse_default_settings(struct mt_device *td,
170 struct mt_application *app);
171 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
173 /* classes of device behavior */
174 #define MT_CLS_DEFAULT 0x0001
176 #define MT_CLS_SERIAL 0x0002
177 #define MT_CLS_CONFIDENCE 0x0003
178 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
179 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
180 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
181 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
182 /* reserved 0x0008 */
183 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
184 #define MT_CLS_NSMU 0x000a
185 /* reserved 0x0010 */
186 /* reserved 0x0011 */
187 #define MT_CLS_WIN_8 0x0012
188 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
189 #define MT_CLS_WIN_8_DUAL 0x0014
191 /* vendor specific classes */
192 #define MT_CLS_3M 0x0101
193 /* reserved 0x0102 */
194 #define MT_CLS_EGALAX 0x0103
195 #define MT_CLS_EGALAX_SERIAL 0x0104
196 #define MT_CLS_TOPSEED 0x0105
197 #define MT_CLS_PANASONIC 0x0106
198 #define MT_CLS_FLATFROG 0x0107
199 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
200 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
201 #define MT_CLS_LG 0x010a
202 #define MT_CLS_ASUS 0x010b
203 #define MT_CLS_VTL 0x0110
204 #define MT_CLS_GOOGLE 0x0111
205 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
207 #define MT_DEFAULT_MAXCONTACT 10
208 #define MT_MAX_MAXCONTACT 250
211 * Resync device and local timestamps after that many microseconds without
214 #define MAX_TIMESTAMP_INTERVAL 1000000
216 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
217 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
220 * these device-dependent functions determine what slot corresponds
221 * to a valid contact that was just read.
224 static int cypress_compute_slot(struct mt_application *application,
225 struct mt_usages *slot)
227 if (*slot->contactid != 0 || application->num_received == 0)
228 return *slot->contactid;
233 static const struct mt_class mt_classes[] = {
234 { .name = MT_CLS_DEFAULT,
235 .quirks = MT_QUIRK_ALWAYS_VALID |
236 MT_QUIRK_CONTACT_CNT_ACCURATE },
237 { .name = MT_CLS_NSMU,
238 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
239 { .name = MT_CLS_SERIAL,
240 .quirks = MT_QUIRK_ALWAYS_VALID},
241 { .name = MT_CLS_CONFIDENCE,
242 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
243 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
244 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
245 MT_QUIRK_SLOT_IS_CONTACTID },
246 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
247 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
248 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
249 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
250 .quirks = MT_QUIRK_VALID_IS_INRANGE |
251 MT_QUIRK_SLOT_IS_CONTACTID,
253 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
254 .quirks = MT_QUIRK_VALID_IS_INRANGE |
255 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
257 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
258 .quirks = MT_QUIRK_VALID_IS_INRANGE |
259 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
260 { .name = MT_CLS_WIN_8,
261 .quirks = MT_QUIRK_ALWAYS_VALID |
262 MT_QUIRK_IGNORE_DUPLICATES |
264 MT_QUIRK_CONTACT_CNT_ACCURATE |
265 MT_QUIRK_STICKY_FINGERS |
266 MT_QUIRK_WIN8_PTP_BUTTONS },
267 { .name = MT_CLS_EXPORT_ALL_INPUTS,
268 .quirks = MT_QUIRK_ALWAYS_VALID |
269 MT_QUIRK_CONTACT_CNT_ACCURATE,
270 .export_all_inputs = true },
271 { .name = MT_CLS_WIN_8_DUAL,
272 .quirks = MT_QUIRK_ALWAYS_VALID |
273 MT_QUIRK_IGNORE_DUPLICATES |
275 MT_QUIRK_CONTACT_CNT_ACCURATE |
276 MT_QUIRK_WIN8_PTP_BUTTONS,
277 .export_all_inputs = true },
280 * vendor specific classes
283 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
284 MT_QUIRK_SLOT_IS_CONTACTID |
285 MT_QUIRK_TOUCH_SIZE_SCALING,
291 { .name = MT_CLS_EGALAX,
292 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
293 MT_QUIRK_VALID_IS_INRANGE,
297 { .name = MT_CLS_EGALAX_SERIAL,
298 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
299 MT_QUIRK_ALWAYS_VALID,
303 { .name = MT_CLS_TOPSEED,
304 .quirks = MT_QUIRK_ALWAYS_VALID,
308 { .name = MT_CLS_PANASONIC,
309 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
311 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
312 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
313 MT_QUIRK_VALID_IS_INRANGE |
314 MT_QUIRK_SLOT_IS_CONTACTID,
317 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
318 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
319 MT_QUIRK_SLOT_IS_CONTACTID
322 { .name = MT_CLS_FLATFROG,
323 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
329 .quirks = MT_QUIRK_ALWAYS_VALID |
330 MT_QUIRK_FIX_CONST_CONTACT_ID |
331 MT_QUIRK_IGNORE_DUPLICATES |
333 MT_QUIRK_CONTACT_CNT_ACCURATE },
334 { .name = MT_CLS_ASUS,
335 .quirks = MT_QUIRK_ALWAYS_VALID |
336 MT_QUIRK_CONTACT_CNT_ACCURATE |
337 MT_QUIRK_ASUS_CUSTOM_UP },
338 { .name = MT_CLS_VTL,
339 .quirks = MT_QUIRK_ALWAYS_VALID |
340 MT_QUIRK_CONTACT_CNT_ACCURATE |
341 MT_QUIRK_FORCE_GET_FEATURE,
343 { .name = MT_CLS_GOOGLE,
344 .quirks = MT_QUIRK_ALWAYS_VALID |
345 MT_QUIRK_CONTACT_CNT_ACCURATE |
346 MT_QUIRK_SLOT_IS_CONTACTID |
349 { .name = MT_CLS_RAZER_BLADE_STEALTH,
350 .quirks = MT_QUIRK_ALWAYS_VALID |
351 MT_QUIRK_IGNORE_DUPLICATES |
353 MT_QUIRK_CONTACT_CNT_ACCURATE |
354 MT_QUIRK_WIN8_PTP_BUTTONS,
359 static ssize_t mt_show_quirks(struct device *dev,
360 struct device_attribute *attr,
363 struct hid_device *hdev = to_hid_device(dev);
364 struct mt_device *td = hid_get_drvdata(hdev);
366 return sprintf(buf, "%u\n", td->mtclass.quirks);
369 static ssize_t mt_set_quirks(struct device *dev,
370 struct device_attribute *attr,
371 const char *buf, size_t count)
373 struct hid_device *hdev = to_hid_device(dev);
374 struct mt_device *td = hid_get_drvdata(hdev);
375 struct mt_application *application;
379 if (kstrtoul(buf, 0, &val))
382 td->mtclass.quirks = val;
384 list_for_each_entry(application, &td->applications, list) {
385 application->quirks = val;
386 if (!application->have_contact_count)
387 application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
393 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
395 static struct attribute *sysfs_attrs[] = {
396 &dev_attr_quirks.attr,
400 static const struct attribute_group mt_attribute_group = {
404 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
407 u32 size = hid_report_len(report);
411 * Do not fetch the feature report if the device has been explicitly
412 * marked as non-capable.
414 if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
417 buf = hid_alloc_report_buf(report, GFP_KERNEL);
421 ret = hid_hw_raw_request(hdev, report->id, buf, size,
422 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
424 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
427 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
430 dev_warn(&hdev->dev, "failed to report feature\n");
436 static void mt_feature_mapping(struct hid_device *hdev,
437 struct hid_field *field, struct hid_usage *usage)
439 struct mt_device *td = hid_get_drvdata(hdev);
441 switch (usage->hid) {
442 case HID_DG_CONTACTMAX:
443 mt_get_feature(hdev, field->report);
445 td->maxcontacts = field->value[0];
446 if (!td->maxcontacts &&
447 field->logical_maximum <= MT_MAX_MAXCONTACT)
448 td->maxcontacts = field->logical_maximum;
449 if (td->mtclass.maxcontacts)
450 /* check if the maxcontacts is given by the class */
451 td->maxcontacts = td->mtclass.maxcontacts;
454 case HID_DG_BUTTONTYPE:
455 if (usage->usage_index >= field->report_count) {
456 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
460 mt_get_feature(hdev, field->report);
461 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
462 td->is_buttonpad = true;
466 /* Retrieve the Win8 blob once to enable some devices */
467 if (usage->usage_index == 0)
468 mt_get_feature(hdev, field->report);
473 static void set_abs(struct input_dev *input, unsigned int code,
474 struct hid_field *field, int snratio)
476 int fmin = field->logical_minimum;
477 int fmax = field->logical_maximum;
478 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
479 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
480 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
483 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
484 struct mt_application *application)
486 struct mt_usages *usage;
488 usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
492 /* set some defaults so we do not need to check for null pointers */
493 usage->x = DEFAULT_ZERO;
494 usage->y = DEFAULT_ZERO;
495 usage->cx = DEFAULT_ZERO;
496 usage->cy = DEFAULT_ZERO;
497 usage->p = DEFAULT_ZERO;
498 usage->w = DEFAULT_ZERO;
499 usage->h = DEFAULT_ZERO;
500 usage->a = DEFAULT_ZERO;
501 usage->contactid = DEFAULT_ZERO;
502 usage->tip_state = DEFAULT_FALSE;
503 usage->inrange_state = DEFAULT_FALSE;
504 usage->confidence_state = DEFAULT_TRUE;
506 list_add_tail(&usage->list, &application->mt_usages);
511 static struct mt_application *mt_allocate_application(struct mt_device *td,
512 unsigned int application)
514 struct mt_application *mt_application;
516 mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
521 mt_application->application = application;
522 INIT_LIST_HEAD(&mt_application->mt_usages);
524 if (application == HID_DG_TOUCHSCREEN)
525 mt_application->mt_flags |= INPUT_MT_DIRECT;
528 * Model touchscreens providing buttons as touchpads.
530 if (application == HID_DG_TOUCHPAD) {
531 mt_application->mt_flags |= INPUT_MT_POINTER;
532 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
535 mt_application->scantime = DEFAULT_ZERO;
536 mt_application->raw_cc = DEFAULT_ZERO;
537 mt_application->quirks = td->mtclass.quirks;
539 list_add_tail(&mt_application->list, &td->applications);
541 return mt_application;
544 static struct mt_application *mt_find_application(struct mt_device *td,
545 unsigned int application)
547 struct mt_application *tmp, *mt_application = NULL;
549 list_for_each_entry(tmp, &td->applications, list) {
550 if (application == tmp->application) {
551 mt_application = tmp;
557 mt_application = mt_allocate_application(td, application);
559 return mt_application;
562 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
563 struct hid_report *report)
565 struct mt_report_data *rdata;
566 struct hid_field *field;
569 rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
573 rdata->report = report;
574 rdata->application = mt_find_application(td, report->application);
576 if (!rdata->application) {
577 devm_kfree(&td->hdev->dev, rdata);
581 for (r = 0; r < report->maxfield; r++) {
582 field = report->field[r];
584 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
587 for (n = 0; n < field->report_count; n++) {
588 if (field->usage[n].hid == HID_DG_CONTACTID)
589 rdata->is_mt_collection = true;
593 list_add_tail(&rdata->list, &td->reports);
598 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
599 struct hid_report *report)
601 struct mt_report_data *tmp, *rdata = NULL;
603 list_for_each_entry(tmp, &td->reports, list) {
604 if (report == tmp->report) {
611 rdata = mt_allocate_report_data(td, report);
616 static void mt_store_field(struct hid_device *hdev,
617 struct mt_application *application,
621 struct mt_usages *usage;
624 if (list_empty(&application->mt_usages))
625 usage = mt_allocate_usage(hdev, application);
627 usage = list_last_entry(&application->mt_usages,
634 target = (__s32 **)((char *)usage + offset);
636 /* the value has already been filled, create a new slot */
637 if (*target != DEFAULT_TRUE &&
638 *target != DEFAULT_FALSE &&
639 *target != DEFAULT_ZERO) {
640 if (usage->contactid == DEFAULT_ZERO ||
641 usage->x == DEFAULT_ZERO ||
642 usage->y == DEFAULT_ZERO) {
644 "ignoring duplicate usage on incomplete");
647 usage = mt_allocate_usage(hdev, application);
651 target = (__s32 **)((char *)usage + offset);
657 #define MT_STORE_FIELD(__name) \
658 mt_store_field(hdev, app, \
659 &field->value[usage->usage_index], \
660 offsetof(struct mt_usages, __name))
662 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
663 struct hid_field *field, struct hid_usage *usage,
664 unsigned long **bit, int *max, struct mt_application *app)
666 struct mt_device *td = hid_get_drvdata(hdev);
667 struct mt_class *cls = &td->mtclass;
669 struct hid_usage *prev_usage = NULL;
672 * Model touchscreens providing buttons as touchpads.
674 if (field->application == HID_DG_TOUCHSCREEN &&
675 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
676 app->mt_flags |= INPUT_MT_POINTER;
677 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
680 /* count the buttons on touchpads */
681 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
682 app->buttons_count++;
684 if (usage->usage_index)
685 prev_usage = &field->usage[usage->usage_index - 1];
687 switch (usage->hid & HID_USAGE_PAGE) {
690 switch (usage->hid) {
692 if (prev_usage && (prev_usage->hid == usage->hid)) {
693 code = ABS_MT_TOOL_X;
696 code = ABS_MT_POSITION_X;
700 set_abs(hi->input, code, field, cls->sn_move);
703 * A system multi-axis that exports X and Y has a high
704 * chance of being used directly on a surface
706 if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
707 __set_bit(INPUT_PROP_DIRECT,
709 input_set_abs_params(hi->input,
717 if (prev_usage && (prev_usage->hid == usage->hid)) {
718 code = ABS_MT_TOOL_Y;
721 code = ABS_MT_POSITION_Y;
725 set_abs(hi->input, code, field, cls->sn_move);
731 case HID_UP_DIGITIZER:
732 switch (usage->hid) {
734 if (app->quirks & MT_QUIRK_HOVERING) {
735 input_set_abs_params(hi->input,
736 ABS_MT_DISTANCE, 0, 1, 0, 0);
738 MT_STORE_FIELD(inrange_state);
740 case HID_DG_CONFIDENCE:
741 if ((cls->name == MT_CLS_WIN_8 ||
742 cls->name == MT_CLS_WIN_8_DUAL) &&
743 (field->application == HID_DG_TOUCHPAD ||
744 field->application == HID_DG_TOUCHSCREEN))
745 app->quirks |= MT_QUIRK_CONFIDENCE;
747 if (app->quirks & MT_QUIRK_CONFIDENCE)
748 input_set_abs_params(hi->input,
753 MT_STORE_FIELD(confidence_state);
755 case HID_DG_TIPSWITCH:
756 if (field->application != HID_GD_SYSTEM_MULTIAXIS)
757 input_set_capability(hi->input,
759 MT_STORE_FIELD(tip_state);
761 case HID_DG_CONTACTID:
762 MT_STORE_FIELD(contactid);
763 app->touches_by_report++;
766 if (!(app->quirks & MT_QUIRK_NO_AREA))
767 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
772 if (!(app->quirks & MT_QUIRK_NO_AREA)) {
773 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
777 * Only set ABS_MT_ORIENTATION if it is not
778 * already set by the HID_DG_AZIMUTH usage.
780 if (!test_bit(ABS_MT_ORIENTATION,
782 input_set_abs_params(hi->input,
783 ABS_MT_ORIENTATION, 0, 1, 0, 0);
787 case HID_DG_TIPPRESSURE:
788 set_abs(hi->input, ABS_MT_PRESSURE, field,
792 case HID_DG_SCANTIME:
793 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
794 app->scantime = &field->value[usage->usage_index];
795 app->scantime_logical_max = field->logical_maximum;
797 case HID_DG_CONTACTCOUNT:
798 app->have_contact_count = true;
799 app->raw_cc = &field->value[usage->usage_index];
803 * Azimuth has the range of [0, MAX) representing a full
804 * revolution. Set ABS_MT_ORIENTATION to a quarter of
805 * MAX according the definition of ABS_MT_ORIENTATION
807 input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
808 -field->logical_maximum / 4,
809 field->logical_maximum / 4,
811 field->logical_maximum / cls->sn_move : 0, 0);
814 case HID_DG_CONTACTMAX:
815 /* contact max are global to the report */
818 /* Legacy devices use TIPSWITCH and not TOUCH.
819 * Let's just ignore this field. */
822 /* let hid-input decide for the others */
826 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
828 * MS PTP spec says that external buttons left and right have
831 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
832 field->application == HID_DG_TOUCHPAD &&
833 (usage->hid & HID_USAGE) > 1)
836 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
837 code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
839 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
840 input_set_capability(hi->input, EV_KEY, code);
844 /* we do not want to map these: no input-oriented meaning */
851 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
852 struct mt_usages *slot,
853 struct input_dev *input)
855 __s32 quirks = app->quirks;
857 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
858 return *slot->contactid;
860 if (quirks & MT_QUIRK_CYPRESS)
861 return cypress_compute_slot(app, slot);
863 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
864 return app->num_received;
866 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
867 return *slot->contactid - 1;
869 return input_mt_get_slot_by_key(input, *slot->contactid);
872 static void mt_release_pending_palms(struct mt_device *td,
873 struct mt_application *app,
874 struct input_dev *input)
877 bool need_sync = false;
879 for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
880 clear_bit(slotnum, app->pending_palm_slots);
882 input_mt_slot(input, slotnum);
883 input_mt_report_slot_state(input, MT_TOOL_PALM, false);
889 input_mt_sync_frame(input);
895 * this function is called when a whole packet has been received and processed,
896 * so that it can decide what to send to the input layer.
898 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
899 struct input_dev *input)
901 if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
902 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
904 input_mt_sync_frame(input);
905 input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
908 mt_release_pending_palms(td, app, input);
910 app->num_received = 0;
911 app->left_button_state = 0;
913 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
914 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
916 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
917 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
920 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
922 long delta = value - app->prev_scantime;
923 unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
925 app->jiffies = jiffies;
928 delta += app->scantime_logical_max;
930 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
933 if (jdelta > MAX_TIMESTAMP_INTERVAL)
934 /* No data received for a while, resync the timestamp. */
937 return app->timestamp + delta;
940 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
941 struct hid_usage *usage, __s32 value)
943 /* we will handle the hidinput part later, now remains hiddev */
944 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
945 hid->hiddev_hid_event(hid, field, usage, value);
950 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
951 struct mt_application *app,
952 struct mt_usages *slot)
954 struct input_mt *mt = input->mt;
955 __s32 quirks = app->quirks;
957 bool confidence_state = true;
958 bool inrange_state = false;
961 int tool = MT_TOOL_FINGER;
966 if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
967 app->num_received >= app->num_expected)
970 if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
971 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
972 valid = *slot->inrange_state;
973 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
974 valid = *slot->tip_state;
975 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
976 valid = *slot->confidence_state;
982 slotnum = mt_compute_slot(td, app, slot, input);
983 if (slotnum < 0 || slotnum >= td->maxcontacts)
986 if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
987 struct input_mt_slot *i_slot = &mt->slots[slotnum];
989 if (input_mt_is_active(i_slot) &&
990 input_mt_is_used(mt, i_slot))
994 if (quirks & MT_QUIRK_CONFIDENCE)
995 confidence_state = *slot->confidence_state;
997 if (quirks & MT_QUIRK_HOVERING)
998 inrange_state = *slot->inrange_state;
1000 active = *slot->tip_state || inrange_state;
1002 if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1003 tool = MT_TOOL_DIAL;
1004 else if (unlikely(!confidence_state)) {
1005 tool = MT_TOOL_PALM;
1007 input_mt_is_active(&mt->slots[slotnum])) {
1009 * The non-confidence was reported for
1010 * previously valid contact that is also no
1011 * longer valid. We can't simply report
1012 * lift-off as userspace will not be aware
1013 * of non-confidence, so we need to split
1014 * it into 2 events: active MT_TOOL_PALM
1015 * and a separate liftoff.
1018 set_bit(slotnum, app->pending_palm_slots);
1022 input_mt_slot(input, slotnum);
1023 input_mt_report_slot_state(input, tool, active);
1025 /* this finger is in proximity of the sensor */
1026 int wide = (*slot->w > *slot->h);
1027 int major = max(*slot->w, *slot->h);
1028 int minor = min(*slot->w, *slot->h);
1029 int orientation = wide;
1033 if (slot->a != DEFAULT_ZERO) {
1035 * Azimuth is counter-clockwise and ranges from [0, MAX)
1036 * (a full revolution). Convert it to clockwise ranging
1039 * Note that ABS_MT_ORIENTATION require us to report
1040 * the limit of [-MAX/4, MAX/4], but the value can go
1041 * out of range to [-MAX/2, MAX/2] to report an upside
1045 max_azimuth = input_abs_get_max(input,
1046 ABS_MT_ORIENTATION);
1047 if (azimuth > max_azimuth * 2)
1048 azimuth -= max_azimuth * 4;
1049 orientation = -azimuth;
1052 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1054 * divided by two to match visual scale of touch
1055 * for devices with this quirk
1061 input_event(input, EV_ABS, ABS_MT_POSITION_X, *slot->x);
1062 input_event(input, EV_ABS, ABS_MT_POSITION_Y, *slot->y);
1063 input_event(input, EV_ABS, ABS_MT_TOOL_X, *slot->cx);
1064 input_event(input, EV_ABS, ABS_MT_TOOL_Y, *slot->cy);
1065 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1066 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1067 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1068 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1069 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1071 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1077 static void mt_process_mt_event(struct hid_device *hid,
1078 struct mt_application *app,
1079 struct hid_field *field,
1080 struct hid_usage *usage,
1084 __s32 quirks = app->quirks;
1085 struct input_dev *input = field->hidinput->input;
1087 if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1090 if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1093 * For Win8 PTP touchpads we should only look at
1094 * non finger/touch events in the first_packet of a
1095 * (possible) multi-packet frame.
1101 * For Win8 PTP touchpads we map both the clickpad click
1102 * and any "external" left buttons to BTN_LEFT if a
1103 * device claims to have both we need to report 1 for
1104 * BTN_LEFT if either is pressed, so we or all values
1105 * together and report the result in mt_sync_frame().
1107 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1108 app->left_button_state |= value;
1113 input_event(input, usage->type, usage->code, value);
1116 static void mt_touch_report(struct hid_device *hid,
1117 struct mt_report_data *rdata)
1119 struct mt_device *td = hid_get_drvdata(hid);
1120 struct hid_report *report = rdata->report;
1121 struct mt_application *app = rdata->application;
1122 struct hid_field *field;
1123 struct input_dev *input;
1124 struct mt_usages *slot;
1129 int contact_count = -1;
1131 /* sticky fingers release in progress, abort */
1132 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1135 scantime = *app->scantime;
1136 app->timestamp = mt_compute_timestamp(app, scantime);
1137 if (app->raw_cc != DEFAULT_ZERO)
1138 contact_count = *app->raw_cc;
1141 * Includes multi-packet support where subsequent
1142 * packets are sent with zero contactcount.
1144 if (contact_count >= 0) {
1146 * For Win8 PTPs the first packet (td->num_received == 0) may
1147 * have a contactcount of 0 if there only is a button event.
1148 * We double check that this is not a continuation packet
1149 * of a possible multi-packet frame be checking that the
1150 * timestamp has changed.
1152 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1153 app->num_received == 0 &&
1154 app->prev_scantime != scantime)
1155 app->num_expected = contact_count;
1156 /* A non 0 contact count always indicates a first packet */
1157 else if (contact_count)
1158 app->num_expected = contact_count;
1160 app->prev_scantime = scantime;
1162 first_packet = app->num_received == 0;
1164 input = report->field[0]->hidinput->input;
1166 list_for_each_entry(slot, &app->mt_usages, list) {
1167 if (!mt_process_slot(td, input, app, slot))
1168 app->num_received++;
1171 for (r = 0; r < report->maxfield; r++) {
1172 field = report->field[r];
1173 count = field->report_count;
1175 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1178 for (n = 0; n < count; n++)
1179 mt_process_mt_event(hid, app, field,
1180 &field->usage[n], field->value[n],
1184 if (app->num_received >= app->num_expected)
1185 mt_sync_frame(td, app, input);
1188 * Windows 8 specs says 2 things:
1189 * - once a contact has been reported, it has to be reported in each
1191 * - the report rate when fingers are present has to be at least
1192 * the refresh rate of the screen, 60 or 120 Hz
1194 * I interprete this that the specification forces a report rate of
1195 * at least 60 Hz for a touchscreen to be certified.
1196 * Which means that if we do not get a report whithin 16 ms, either
1197 * something wrong happens, either the touchscreen forgets to send
1198 * a release. Taking a reasonable margin allows to remove issues
1199 * with USB communication or the load of the machine.
1201 * Given that Win 8 devices are forced to send a release, this will
1202 * only affect laggish machines and the ones that have a firmware
1205 if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1206 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1207 mod_timer(&td->release_timer,
1208 jiffies + msecs_to_jiffies(100));
1210 del_timer(&td->release_timer);
1213 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1216 static int mt_touch_input_configured(struct hid_device *hdev,
1217 struct hid_input *hi,
1218 struct mt_application *app)
1220 struct mt_device *td = hid_get_drvdata(hdev);
1221 struct mt_class *cls = &td->mtclass;
1222 struct input_dev *input = hi->input;
1225 if (!td->maxcontacts)
1226 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1228 mt_post_parse(td, app);
1229 if (td->serial_maybe)
1230 mt_post_parse_default_settings(td, app);
1232 if (cls->is_indirect)
1233 app->mt_flags |= INPUT_MT_POINTER;
1235 if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1236 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1238 /* check for clickpads */
1239 if ((app->mt_flags & INPUT_MT_POINTER) &&
1240 (app->buttons_count == 1))
1241 td->is_buttonpad = true;
1243 if (td->is_buttonpad)
1244 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1246 app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1247 BITS_TO_LONGS(td->maxcontacts),
1250 if (!app->pending_palm_slots)
1253 ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1261 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1263 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1264 struct hid_field *field, struct hid_usage *usage,
1265 unsigned long **bit, int *max)
1267 struct mt_device *td = hid_get_drvdata(hdev);
1268 struct mt_application *application;
1269 struct mt_report_data *rdata;
1271 rdata = mt_find_report_data(td, field->report);
1273 hid_err(hdev, "failed to allocate data for report\n");
1277 application = rdata->application;
1280 * If mtclass.export_all_inputs is not set, only map fields from
1281 * TouchScreen or TouchPad collections. We need to ignore fields
1282 * that belong to other collections such as Mouse that might have
1283 * the same GenericDesktop usages.
1285 if (!td->mtclass.export_all_inputs &&
1286 field->application != HID_DG_TOUCHSCREEN &&
1287 field->application != HID_DG_PEN &&
1288 field->application != HID_DG_TOUCHPAD &&
1289 field->application != HID_GD_KEYBOARD &&
1290 field->application != HID_GD_SYSTEM_CONTROL &&
1291 field->application != HID_CP_CONSUMER_CONTROL &&
1292 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1293 field->application != HID_GD_SYSTEM_MULTIAXIS &&
1294 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1295 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1299 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1300 * touchpad report descriptor. We need to treat these as an array to
1301 * map usages to input keys.
1303 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1304 application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1305 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1306 set_bit(EV_REP, hi->input->evbit);
1307 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1308 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1309 switch (usage->hid & HID_USAGE) {
1310 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
1311 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
1312 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
1313 case 0x6b: mt_map_key_clear(KEY_F21); break;
1314 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1321 if (rdata->is_mt_collection)
1322 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1326 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1327 * for the stylus. Overwrite the hid_input application
1329 if (field->physical == HID_DG_STYLUS)
1330 hi->application = HID_DG_STYLUS;
1332 /* let hid-core decide for the others */
1336 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1337 struct hid_field *field, struct hid_usage *usage,
1338 unsigned long **bit, int *max)
1340 struct mt_device *td = hid_get_drvdata(hdev);
1341 struct mt_report_data *rdata;
1343 rdata = mt_find_report_data(td, field->report);
1344 if (rdata && rdata->is_mt_collection) {
1345 /* We own these mappings, tell hid-input to ignore them */
1349 /* let hid-core decide for the others */
1353 static int mt_event(struct hid_device *hid, struct hid_field *field,
1354 struct hid_usage *usage, __s32 value)
1356 struct mt_device *td = hid_get_drvdata(hid);
1357 struct mt_report_data *rdata;
1359 rdata = mt_find_report_data(td, field->report);
1360 if (rdata && rdata->is_mt_collection)
1361 return mt_touch_event(hid, field, usage, value);
1366 static void mt_report(struct hid_device *hid, struct hid_report *report)
1368 struct mt_device *td = hid_get_drvdata(hid);
1369 struct hid_field *field = report->field[0];
1370 struct mt_report_data *rdata;
1372 if (!(hid->claimed & HID_CLAIMED_INPUT))
1375 rdata = mt_find_report_data(td, report);
1376 if (rdata && rdata->is_mt_collection)
1377 return mt_touch_report(hid, rdata);
1379 if (field && field->hidinput && field->hidinput->input)
1380 input_sync(field->hidinput->input);
1383 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1384 struct hid_field *field,
1385 struct hid_usage *usage,
1386 enum latency_mode latency,
1387 bool surface_switch,
1389 bool *inputmode_found)
1391 struct mt_device *td = hid_get_drvdata(hdev);
1392 struct mt_class *cls = &td->mtclass;
1393 struct hid_report *report = field->report;
1394 unsigned int index = usage->usage_index;
1399 switch (usage->hid) {
1400 case HID_DG_INPUTMODE:
1402 * Some elan panels wrongly declare 2 input mode features,
1403 * and silently ignore when we set the value in the second
1404 * field. Skip the second feature and hope for the best.
1406 if (*inputmode_found)
1409 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1410 report_len = hid_report_len(report);
1411 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1414 "failed to allocate buffer for report\n");
1417 hid_hw_raw_request(hdev, report->id, buf, report_len,
1419 HID_REQ_GET_REPORT);
1423 field->value[index] = td->inputmode_value;
1424 *inputmode_found = true;
1427 case HID_DG_CONTACTMAX:
1428 if (cls->maxcontacts) {
1429 max = min_t(int, field->logical_maximum,
1431 if (field->value[index] != max) {
1432 field->value[index] = max;
1438 case HID_DG_LATENCYMODE:
1439 field->value[index] = latency;
1442 case HID_DG_SURFACESWITCH:
1443 field->value[index] = surface_switch;
1446 case HID_DG_BUTTONSWITCH:
1447 field->value[index] = button_switch;
1451 return false; /* no need to update the report */
1454 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1455 bool surface_switch, bool button_switch)
1457 struct hid_report_enum *rep_enum;
1458 struct hid_report *rep;
1459 struct hid_usage *usage;
1462 bool inputmode_found = false;
1464 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1465 list_for_each_entry(rep, &rep_enum->report_list, list) {
1466 update_report = false;
1468 for (i = 0; i < rep->maxfield; i++) {
1469 /* Ignore if report count is out of bounds. */
1470 if (rep->field[i]->report_count < 1)
1473 for (j = 0; j < rep->field[i]->maxusage; j++) {
1474 usage = &rep->field[i]->usage[j];
1476 if (mt_need_to_apply_feature(hdev,
1483 update_report = true;
1488 hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1492 static void mt_post_parse_default_settings(struct mt_device *td,
1493 struct mt_application *app)
1495 __s32 quirks = app->quirks;
1497 /* unknown serial device needs special quirks */
1498 if (list_is_singular(&app->mt_usages)) {
1499 quirks |= MT_QUIRK_ALWAYS_VALID;
1500 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1501 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1502 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1503 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1506 app->quirks = quirks;
1509 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1511 if (!app->have_contact_count)
1512 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1515 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1517 struct mt_device *td = hid_get_drvdata(hdev);
1519 const char *suffix = NULL;
1520 struct mt_report_data *rdata;
1521 struct mt_application *mt_application = NULL;
1522 struct hid_report *report;
1525 list_for_each_entry(report, &hi->reports, hidinput_list) {
1526 rdata = mt_find_report_data(td, report);
1528 hid_err(hdev, "failed to allocate data for report\n");
1532 mt_application = rdata->application;
1534 if (rdata->is_mt_collection) {
1535 ret = mt_touch_input_configured(hdev, hi,
1542 switch (hi->application) {
1543 case HID_GD_KEYBOARD:
1546 case HID_DG_TOUCHPAD:
1547 case HID_GD_SYSTEM_CONTROL:
1548 case HID_CP_CONSUMER_CONTROL:
1549 case HID_GD_WIRELESS_RADIO_CTLS:
1550 case HID_GD_SYSTEM_MULTIAXIS:
1551 /* already handled by hid core */
1553 case HID_DG_TOUCHSCREEN:
1554 /* we do not set suffix = "Touchscreen" */
1555 hi->input->name = hdev->name;
1558 /* force BTN_STYLUS to allow tablet matching in udev */
1559 __set_bit(BTN_STYLUS, hi->input->keybit);
1561 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1562 suffix = "Custom Media Keys";
1570 name = devm_kzalloc(&hi->input->dev,
1571 strlen(hdev->name) + strlen(suffix) + 2,
1574 sprintf(name, "%s %s", hdev->name, suffix);
1575 hi->input->name = name;
1582 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1584 if (field->usage[0].hid != usage ||
1585 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1588 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1589 field->flags |= HID_MAIN_ITEM_VARIABLE;
1592 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1594 struct hid_report *report;
1597 list_for_each_entry(report,
1598 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1601 if (!report->maxfield)
1604 for (i = 0; i < report->maxfield; i++)
1605 if (report->field[i]->maxusage >= 1)
1606 mt_fix_const_field(report->field[i], usage);
1610 static void mt_release_contacts(struct hid_device *hid)
1612 struct hid_input *hidinput;
1613 struct mt_application *application;
1614 struct mt_device *td = hid_get_drvdata(hid);
1616 list_for_each_entry(hidinput, &hid->inputs, list) {
1617 struct input_dev *input_dev = hidinput->input;
1618 struct input_mt *mt = input_dev->mt;
1622 for (i = 0; i < mt->num_slots; i++) {
1623 input_mt_slot(input_dev, i);
1624 input_mt_report_slot_state(input_dev,
1628 input_mt_sync_frame(input_dev);
1629 input_sync(input_dev);
1633 list_for_each_entry(application, &td->applications, list) {
1634 application->num_received = 0;
1638 static void mt_expired_timeout(struct timer_list *t)
1640 struct mt_device *td = from_timer(td, t, release_timer);
1641 struct hid_device *hdev = td->hdev;
1644 * An input report came in just before we release the sticky fingers,
1645 * it will take care of the sticky fingers.
1647 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1649 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1650 mt_release_contacts(hdev);
1651 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1654 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1657 struct mt_device *td;
1658 const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1660 for (i = 0; mt_classes[i].name ; i++) {
1661 if (id->driver_data == mt_classes[i].name) {
1662 mtclass = &(mt_classes[i]);
1667 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1669 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1673 td->mtclass = *mtclass;
1674 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1675 hid_set_drvdata(hdev, td);
1677 INIT_LIST_HEAD(&td->applications);
1678 INIT_LIST_HEAD(&td->reports);
1680 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1681 td->serial_maybe = true;
1683 /* This allows the driver to correctly support devices
1684 * that emit events over several HID messages.
1686 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1689 * This allows the driver to handle different input sensors
1690 * that emits events through different applications on the same HID
1693 hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1695 if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1696 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1698 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1700 ret = hid_parse(hdev);
1704 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1705 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1707 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1711 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1713 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1716 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1722 static int mt_reset_resume(struct hid_device *hdev)
1724 mt_release_contacts(hdev);
1725 mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1729 static int mt_resume(struct hid_device *hdev)
1731 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1732 * It should be safe to send it to other devices too.
1733 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1735 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1741 static void mt_remove(struct hid_device *hdev)
1743 struct mt_device *td = hid_get_drvdata(hdev);
1745 del_timer_sync(&td->release_timer);
1747 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1752 * This list contains only:
1753 * - VID/PID of products not working with the default multitouch handling
1754 * - 2 generic rules.
1755 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1757 static const struct hid_device_id mt_devices[] = {
1760 { .driver_data = MT_CLS_3M,
1761 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1762 USB_DEVICE_ID_3M1968) },
1763 { .driver_data = MT_CLS_3M,
1764 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1765 USB_DEVICE_ID_3M2256) },
1766 { .driver_data = MT_CLS_3M,
1767 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1768 USB_DEVICE_ID_3M3266) },
1771 { .driver_data = MT_CLS_WIN_8_DUAL,
1772 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1773 USB_VENDOR_ID_ALPS_JP,
1774 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1775 { .driver_data = MT_CLS_WIN_8_DUAL,
1776 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1777 USB_VENDOR_ID_ALPS_JP,
1778 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1780 /* Lenovo X1 TAB Gen 2 */
1781 { .driver_data = MT_CLS_WIN_8_DUAL,
1782 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1783 USB_VENDOR_ID_LENOVO,
1784 USB_DEVICE_ID_LENOVO_X1_TAB) },
1786 /* Lenovo X1 TAB Gen 3 */
1787 { .driver_data = MT_CLS_WIN_8_DUAL,
1788 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1789 USB_VENDOR_ID_LENOVO,
1790 USB_DEVICE_ID_LENOVO_X1_TAB3) },
1793 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1794 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1795 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1798 { .driver_data = MT_CLS_ASUS,
1799 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1800 USB_VENDOR_ID_ASUSTEK,
1801 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1804 { .driver_data = MT_CLS_SERIAL,
1805 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1806 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1808 /* Baanto multitouch devices */
1809 { .driver_data = MT_CLS_NSMU,
1810 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1811 USB_DEVICE_ID_BAANTO_MT_190W2) },
1814 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1815 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1816 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1817 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1818 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1819 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1821 /* Chunghwa Telecom touch panels */
1822 { .driver_data = MT_CLS_NSMU,
1823 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1824 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1826 /* Cirque devices */
1827 { .driver_data = MT_CLS_WIN_8_DUAL,
1828 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1829 I2C_VENDOR_ID_CIRQUE,
1830 I2C_PRODUCT_ID_CIRQUE_121F) },
1832 /* CJTouch panels */
1833 { .driver_data = MT_CLS_NSMU,
1834 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1835 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1836 { .driver_data = MT_CLS_NSMU,
1837 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1838 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1840 /* CVTouch panels */
1841 { .driver_data = MT_CLS_NSMU,
1842 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1843 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1845 /* eGalax devices (resistive) */
1846 { .driver_data = MT_CLS_EGALAX,
1847 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1848 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1849 { .driver_data = MT_CLS_EGALAX,
1850 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1851 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1853 /* eGalax devices (capacitive) */
1854 { .driver_data = MT_CLS_EGALAX_SERIAL,
1855 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1856 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1857 { .driver_data = MT_CLS_EGALAX,
1858 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1859 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1860 { .driver_data = MT_CLS_EGALAX_SERIAL,
1861 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1862 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1863 { .driver_data = MT_CLS_EGALAX_SERIAL,
1864 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1865 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1866 { .driver_data = MT_CLS_EGALAX_SERIAL,
1867 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1868 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1869 { .driver_data = MT_CLS_EGALAX_SERIAL,
1870 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1871 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1872 { .driver_data = MT_CLS_EGALAX,
1873 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1874 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1875 { .driver_data = MT_CLS_EGALAX,
1876 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1877 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1878 { .driver_data = MT_CLS_EGALAX_SERIAL,
1879 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1880 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1881 { .driver_data = MT_CLS_EGALAX,
1882 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1883 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1884 { .driver_data = MT_CLS_EGALAX,
1885 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1886 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1887 { .driver_data = MT_CLS_EGALAX,
1888 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1889 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1890 { .driver_data = MT_CLS_EGALAX,
1891 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1892 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1893 { .driver_data = MT_CLS_EGALAX_SERIAL,
1894 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1895 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1896 { .driver_data = MT_CLS_EGALAX_SERIAL,
1897 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1898 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1899 { .driver_data = MT_CLS_EGALAX_SERIAL,
1900 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1901 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1903 /* Elitegroup panel */
1904 { .driver_data = MT_CLS_SERIAL,
1905 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1906 USB_DEVICE_ID_ELITEGROUP_05D8) },
1908 /* Flatfrog Panels */
1909 { .driver_data = MT_CLS_FLATFROG,
1910 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1911 USB_DEVICE_ID_MULTITOUCH_3200) },
1913 /* FocalTech Panels */
1914 { .driver_data = MT_CLS_SERIAL,
1915 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1916 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1918 /* GeneralTouch panel */
1919 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1920 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1921 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1922 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1923 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1924 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1925 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1926 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1927 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1928 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1929 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1930 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1931 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1932 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1933 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1934 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1935 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1936 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1937 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1938 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1939 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1941 /* Gametel game controller */
1942 { .driver_data = MT_CLS_NSMU,
1943 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1944 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1946 /* GoodTouch panels */
1947 { .driver_data = MT_CLS_NSMU,
1948 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1949 USB_DEVICE_ID_GOODTOUCH_000f) },
1952 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1953 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1954 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1956 /* Ilitek dual touch panel */
1957 { .driver_data = MT_CLS_NSMU,
1958 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1959 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1961 /* LG Melfas panel */
1962 { .driver_data = MT_CLS_LG,
1963 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1964 USB_DEVICE_ID_LG_MELFAS_MT) },
1967 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1968 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1969 USB_DEVICE_ID_ASUS_T91MT)},
1970 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1971 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1972 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1973 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1974 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1975 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1978 { .driver_data = MT_CLS_NSMU,
1979 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1980 USB_DEVICE_ID_NOVATEK_PCT) },
1983 { .driver_data = MT_CLS_NSMU,
1984 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1985 USB_VENDOR_ID_NTRIG, 0x1b05) },
1987 /* Panasonic panels */
1988 { .driver_data = MT_CLS_PANASONIC,
1989 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1990 USB_DEVICE_ID_PANABOARD_UBT780) },
1991 { .driver_data = MT_CLS_PANASONIC,
1992 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1993 USB_DEVICE_ID_PANABOARD_UBT880) },
1995 /* PixArt optical touch screen */
1996 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1997 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1998 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1999 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2000 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2001 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2002 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2003 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2004 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2006 /* PixCir-based panels */
2007 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2008 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2009 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2011 /* Quanta-based panels */
2012 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2013 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2014 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2016 /* Razer touchpads */
2017 { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2018 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2019 USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2021 /* Stantum panels */
2022 { .driver_data = MT_CLS_CONFIDENCE,
2023 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2024 USB_DEVICE_ID_MTP_STM)},
2026 /* TopSeed panels */
2027 { .driver_data = MT_CLS_TOPSEED,
2028 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2029 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2031 /* Touch International panels */
2032 { .driver_data = MT_CLS_NSMU,
2033 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2034 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2037 { .driver_data = MT_CLS_NSMU,
2038 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2039 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2040 { .driver_data = MT_CLS_NSMU,
2041 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2042 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2045 { .driver_data = MT_CLS_VTL,
2046 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2047 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2049 /* Wistron panels */
2050 { .driver_data = MT_CLS_NSMU,
2051 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2052 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2055 { .driver_data = MT_CLS_NSMU,
2056 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2057 USB_DEVICE_ID_XAT_CSR) },
2060 { .driver_data = MT_CLS_NSMU,
2061 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2062 USB_DEVICE_ID_XIROKU_SPX) },
2063 { .driver_data = MT_CLS_NSMU,
2064 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2065 USB_DEVICE_ID_XIROKU_MPX) },
2066 { .driver_data = MT_CLS_NSMU,
2067 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2068 USB_DEVICE_ID_XIROKU_CSR) },
2069 { .driver_data = MT_CLS_NSMU,
2070 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2071 USB_DEVICE_ID_XIROKU_SPX1) },
2072 { .driver_data = MT_CLS_NSMU,
2073 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2074 USB_DEVICE_ID_XIROKU_MPX1) },
2075 { .driver_data = MT_CLS_NSMU,
2076 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2077 USB_DEVICE_ID_XIROKU_CSR1) },
2078 { .driver_data = MT_CLS_NSMU,
2079 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2080 USB_DEVICE_ID_XIROKU_SPX2) },
2081 { .driver_data = MT_CLS_NSMU,
2082 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2083 USB_DEVICE_ID_XIROKU_MPX2) },
2084 { .driver_data = MT_CLS_NSMU,
2085 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2086 USB_DEVICE_ID_XIROKU_CSR2) },
2088 /* Google MT devices */
2089 { .driver_data = MT_CLS_GOOGLE,
2090 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2091 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2093 /* Generic MT device */
2094 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2096 /* Generic Win 8 certified MT device */
2097 { .driver_data = MT_CLS_WIN_8,
2098 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2099 HID_ANY_ID, HID_ANY_ID) },
2102 MODULE_DEVICE_TABLE(hid, mt_devices);
2104 static const struct hid_usage_id mt_grabbed_usages[] = {
2105 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2106 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2109 static struct hid_driver mt_driver = {
2110 .name = "hid-multitouch",
2111 .id_table = mt_devices,
2113 .remove = mt_remove,
2114 .input_mapping = mt_input_mapping,
2115 .input_mapped = mt_input_mapped,
2116 .input_configured = mt_input_configured,
2117 .feature_mapping = mt_feature_mapping,
2118 .usage_table = mt_grabbed_usages,
2120 .report = mt_report,
2122 .reset_resume = mt_reset_resume,
2123 .resume = mt_resume,
2126 module_hid_driver(mt_driver);