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)
71 #define MT_QUIRK_SEPARATE_APP_REPORT BIT(19)
72 #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20)
74 #define MT_INPUTMODE_TOUCHSCREEN 0x02
75 #define MT_INPUTMODE_TOUCHPAD 0x03
77 #define MT_BUTTONTYPE_CLICKPAD 0
80 HID_LATENCY_NORMAL
= 0,
84 #define MT_IO_FLAGS_RUNNING 0
85 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
86 #define MT_IO_FLAGS_PENDING_SLOTS 2
88 static const bool mtrue
= true; /* default for true */
89 static const bool mfalse
; /* default for false */
90 static const __s32 mzero
; /* default for 0 */
92 #define DEFAULT_TRUE ((void *)&mtrue)
93 #define DEFAULT_FALSE ((void *)&mfalse)
94 #define DEFAULT_ZERO ((void *)&mzero)
97 struct list_head list
;
98 __s32
*x
, *y
, *cx
, *cy
, *p
, *w
, *h
, *a
;
99 __s32
*contactid
; /* the device ContactID assigned to this slot */
100 bool *tip_state
; /* is the touch valid? */
101 bool *inrange_state
; /* is the finger in proximity of the sensor? */
102 bool *confidence_state
; /* is the touch made by a finger? */
105 struct mt_application
{
106 struct list_head list
;
107 unsigned int application
;
108 unsigned int report_id
;
109 struct list_head mt_usages
; /* mt usages list */
113 __s32
*scantime
; /* scantime reported */
114 __s32 scantime_logical_max
; /* max value for raw scantime */
116 __s32
*raw_cc
; /* contact count in the report */
117 int left_button_state
; /* left button state */
118 unsigned int mt_flags
; /* flags to pass to input-mt */
120 unsigned long *pending_palm_slots
; /* slots where we reported palm
121 * and need to release */
123 __u8 num_received
; /* how many contacts we received */
124 __u8 num_expected
; /* expected last contact index */
125 __u8 buttons_count
; /* number of physical buttons per touchpad */
126 __u8 touches_by_report
; /* how many touches are present in one report:
127 * 1 means we should use a serial protocol
128 * > 1 means hybrid (multitouch) protocol
131 __s32 dev_time
; /* the scan time provided by the device */
132 unsigned long jiffies
; /* the frame's jiffies */
133 int timestamp
; /* the timestamp to be sent */
134 int prev_scantime
; /* scantime reported previously */
136 bool have_contact_count
;
140 __s32 name
; /* MT_CLS */
142 __s32 sn_move
; /* Signal/noise ratio for move events */
143 __s32 sn_width
; /* Signal/noise ratio for width events */
144 __s32 sn_height
; /* Signal/noise ratio for height events */
145 __s32 sn_pressure
; /* Signal/noise ratio for pressure events */
147 bool is_indirect
; /* true for touchpads */
148 bool export_all_inputs
; /* do not ignore mouse, keyboards, etc... */
151 struct mt_report_data
{
152 struct list_head list
;
153 struct hid_report
*report
;
154 struct mt_application
*application
;
155 bool is_mt_collection
;
159 struct mt_class mtclass
; /* our mt device class */
160 struct timer_list release_timer
; /* to release sticky fingers */
161 struct hid_device
*hdev
; /* hid_device we're attached to */
162 unsigned long mt_io_flags
; /* mt flags (MT_IO_FLAGS_*) */
163 __u8 inputmode_value
; /* InputMode HID feature value */
165 bool is_buttonpad
; /* is this device a button pad? */
166 bool serial_maybe
; /* need to check for serial protocol */
168 struct list_head applications
;
169 struct list_head reports
;
172 static void mt_post_parse_default_settings(struct mt_device
*td
,
173 struct mt_application
*app
);
174 static void mt_post_parse(struct mt_device
*td
, struct mt_application
*app
);
176 /* classes of device behavior */
177 #define MT_CLS_DEFAULT 0x0001
179 #define MT_CLS_SERIAL 0x0002
180 #define MT_CLS_CONFIDENCE 0x0003
181 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
182 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
183 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
184 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
185 /* reserved 0x0008 */
186 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
187 #define MT_CLS_NSMU 0x000a
188 /* reserved 0x0010 */
189 /* reserved 0x0011 */
190 #define MT_CLS_WIN_8 0x0012
191 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
192 /* reserved 0x0014 */
193 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
195 /* vendor specific classes */
196 #define MT_CLS_3M 0x0101
197 /* reserved 0x0102 */
198 #define MT_CLS_EGALAX 0x0103
199 #define MT_CLS_EGALAX_SERIAL 0x0104
200 #define MT_CLS_TOPSEED 0x0105
201 #define MT_CLS_PANASONIC 0x0106
202 #define MT_CLS_FLATFROG 0x0107
203 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
204 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
205 #define MT_CLS_LG 0x010a
206 #define MT_CLS_ASUS 0x010b
207 #define MT_CLS_VTL 0x0110
208 #define MT_CLS_GOOGLE 0x0111
209 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
210 #define MT_CLS_SMART_TECH 0x0113
212 #define MT_DEFAULT_MAXCONTACT 10
213 #define MT_MAX_MAXCONTACT 250
216 * Resync device and local timestamps after that many microseconds without
219 #define MAX_TIMESTAMP_INTERVAL 1000000
221 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
222 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
225 * these device-dependent functions determine what slot corresponds
226 * to a valid contact that was just read.
229 static int cypress_compute_slot(struct mt_application
*application
,
230 struct mt_usages
*slot
)
232 if (*slot
->contactid
!= 0 || application
->num_received
== 0)
233 return *slot
->contactid
;
238 static const struct mt_class mt_classes
[] = {
239 { .name
= MT_CLS_DEFAULT
,
240 .quirks
= MT_QUIRK_ALWAYS_VALID
|
241 MT_QUIRK_CONTACT_CNT_ACCURATE
},
242 { .name
= MT_CLS_NSMU
,
243 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
},
244 { .name
= MT_CLS_SERIAL
,
245 .quirks
= MT_QUIRK_ALWAYS_VALID
},
246 { .name
= MT_CLS_CONFIDENCE
,
247 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
},
248 { .name
= MT_CLS_CONFIDENCE_CONTACT_ID
,
249 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
250 MT_QUIRK_SLOT_IS_CONTACTID
},
251 { .name
= MT_CLS_CONFIDENCE_MINUS_ONE
,
252 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
253 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
},
254 { .name
= MT_CLS_DUAL_INRANGE_CONTACTID
,
255 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
256 MT_QUIRK_SLOT_IS_CONTACTID
,
258 { .name
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
259 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
260 MT_QUIRK_SLOT_IS_CONTACTNUMBER
,
262 { .name
= MT_CLS_INRANGE_CONTACTNUMBER
,
263 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
264 MT_QUIRK_SLOT_IS_CONTACTNUMBER
},
265 { .name
= MT_CLS_WIN_8
,
266 .quirks
= MT_QUIRK_ALWAYS_VALID
|
267 MT_QUIRK_IGNORE_DUPLICATES
|
269 MT_QUIRK_CONTACT_CNT_ACCURATE
|
270 MT_QUIRK_STICKY_FINGERS
|
271 MT_QUIRK_WIN8_PTP_BUTTONS
,
272 .export_all_inputs
= true },
273 { .name
= MT_CLS_EXPORT_ALL_INPUTS
,
274 .quirks
= MT_QUIRK_ALWAYS_VALID
|
275 MT_QUIRK_CONTACT_CNT_ACCURATE
,
276 .export_all_inputs
= true },
277 { .name
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
278 .quirks
= MT_QUIRK_ALWAYS_VALID
|
279 MT_QUIRK_IGNORE_DUPLICATES
|
281 MT_QUIRK_CONTACT_CNT_ACCURATE
|
282 MT_QUIRK_STICKY_FINGERS
|
283 MT_QUIRK_WIN8_PTP_BUTTONS
|
284 MT_QUIRK_FORCE_MULTI_INPUT
,
285 .export_all_inputs
= true },
288 * vendor specific classes
291 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
292 MT_QUIRK_SLOT_IS_CONTACTID
|
293 MT_QUIRK_TOUCH_SIZE_SCALING
,
299 { .name
= MT_CLS_EGALAX
,
300 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
301 MT_QUIRK_VALID_IS_INRANGE
,
305 { .name
= MT_CLS_EGALAX_SERIAL
,
306 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
307 MT_QUIRK_ALWAYS_VALID
,
311 { .name
= MT_CLS_TOPSEED
,
312 .quirks
= MT_QUIRK_ALWAYS_VALID
,
316 { .name
= MT_CLS_PANASONIC
,
317 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
,
319 { .name
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
320 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
321 MT_QUIRK_VALID_IS_INRANGE
|
322 MT_QUIRK_SLOT_IS_CONTACTID
,
325 { .name
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
326 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
327 MT_QUIRK_SLOT_IS_CONTACTID
330 { .name
= MT_CLS_FLATFROG
,
331 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
337 .quirks
= MT_QUIRK_ALWAYS_VALID
|
338 MT_QUIRK_FIX_CONST_CONTACT_ID
|
339 MT_QUIRK_IGNORE_DUPLICATES
|
341 MT_QUIRK_CONTACT_CNT_ACCURATE
},
342 { .name
= MT_CLS_ASUS
,
343 .quirks
= MT_QUIRK_ALWAYS_VALID
|
344 MT_QUIRK_CONTACT_CNT_ACCURATE
|
345 MT_QUIRK_ASUS_CUSTOM_UP
},
346 { .name
= MT_CLS_VTL
,
347 .quirks
= MT_QUIRK_ALWAYS_VALID
|
348 MT_QUIRK_CONTACT_CNT_ACCURATE
|
349 MT_QUIRK_FORCE_GET_FEATURE
,
351 { .name
= MT_CLS_GOOGLE
,
352 .quirks
= MT_QUIRK_ALWAYS_VALID
|
353 MT_QUIRK_CONTACT_CNT_ACCURATE
|
354 MT_QUIRK_SLOT_IS_CONTACTID
|
357 { .name
= MT_CLS_RAZER_BLADE_STEALTH
,
358 .quirks
= MT_QUIRK_ALWAYS_VALID
|
359 MT_QUIRK_IGNORE_DUPLICATES
|
361 MT_QUIRK_CONTACT_CNT_ACCURATE
|
362 MT_QUIRK_WIN8_PTP_BUTTONS
,
364 { .name
= MT_CLS_SMART_TECH
,
365 .quirks
= MT_QUIRK_ALWAYS_VALID
|
366 MT_QUIRK_IGNORE_DUPLICATES
|
367 MT_QUIRK_CONTACT_CNT_ACCURATE
|
368 MT_QUIRK_SEPARATE_APP_REPORT
,
373 static ssize_t
mt_show_quirks(struct device
*dev
,
374 struct device_attribute
*attr
,
377 struct hid_device
*hdev
= to_hid_device(dev
);
378 struct mt_device
*td
= hid_get_drvdata(hdev
);
380 return sprintf(buf
, "%u\n", td
->mtclass
.quirks
);
383 static ssize_t
mt_set_quirks(struct device
*dev
,
384 struct device_attribute
*attr
,
385 const char *buf
, size_t count
)
387 struct hid_device
*hdev
= to_hid_device(dev
);
388 struct mt_device
*td
= hid_get_drvdata(hdev
);
389 struct mt_application
*application
;
393 if (kstrtoul(buf
, 0, &val
))
396 td
->mtclass
.quirks
= val
;
398 list_for_each_entry(application
, &td
->applications
, list
) {
399 application
->quirks
= val
;
400 if (!application
->have_contact_count
)
401 application
->quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
407 static DEVICE_ATTR(quirks
, S_IWUSR
| S_IRUGO
, mt_show_quirks
, mt_set_quirks
);
409 static struct attribute
*sysfs_attrs
[] = {
410 &dev_attr_quirks
.attr
,
414 static const struct attribute_group mt_attribute_group
= {
418 static void mt_get_feature(struct hid_device
*hdev
, struct hid_report
*report
)
421 u32 size
= hid_report_len(report
);
425 * Do not fetch the feature report if the device has been explicitly
426 * marked as non-capable.
428 if (hdev
->quirks
& HID_QUIRK_NO_INIT_REPORTS
)
431 buf
= hid_alloc_report_buf(report
, GFP_KERNEL
);
435 ret
= hid_hw_raw_request(hdev
, report
->id
, buf
, size
,
436 HID_FEATURE_REPORT
, HID_REQ_GET_REPORT
);
438 dev_warn(&hdev
->dev
, "failed to fetch feature %d\n",
441 ret
= hid_report_raw_event(hdev
, HID_FEATURE_REPORT
, buf
,
444 dev_warn(&hdev
->dev
, "failed to report feature\n");
450 static void mt_feature_mapping(struct hid_device
*hdev
,
451 struct hid_field
*field
, struct hid_usage
*usage
)
453 struct mt_device
*td
= hid_get_drvdata(hdev
);
455 switch (usage
->hid
) {
456 case HID_DG_CONTACTMAX
:
457 mt_get_feature(hdev
, field
->report
);
459 td
->maxcontacts
= field
->value
[0];
460 if (!td
->maxcontacts
&&
461 field
->logical_maximum
<= MT_MAX_MAXCONTACT
)
462 td
->maxcontacts
= field
->logical_maximum
;
463 if (td
->mtclass
.maxcontacts
)
464 /* check if the maxcontacts is given by the class */
465 td
->maxcontacts
= td
->mtclass
.maxcontacts
;
468 case HID_DG_BUTTONTYPE
:
469 if (usage
->usage_index
>= field
->report_count
) {
470 dev_err(&hdev
->dev
, "HID_DG_BUTTONTYPE out of range\n");
474 mt_get_feature(hdev
, field
->report
);
475 if (field
->value
[usage
->usage_index
] == MT_BUTTONTYPE_CLICKPAD
)
476 td
->is_buttonpad
= true;
480 /* Retrieve the Win8 blob once to enable some devices */
481 if (usage
->usage_index
== 0)
482 mt_get_feature(hdev
, field
->report
);
487 static void set_abs(struct input_dev
*input
, unsigned int code
,
488 struct hid_field
*field
, int snratio
)
490 int fmin
= field
->logical_minimum
;
491 int fmax
= field
->logical_maximum
;
492 int fuzz
= snratio
? (fmax
- fmin
) / snratio
: 0;
493 input_set_abs_params(input
, code
, fmin
, fmax
, fuzz
, 0);
494 input_abs_set_res(input
, code
, hidinput_calc_abs_res(field
, code
));
497 static struct mt_usages
*mt_allocate_usage(struct hid_device
*hdev
,
498 struct mt_application
*application
)
500 struct mt_usages
*usage
;
502 usage
= devm_kzalloc(&hdev
->dev
, sizeof(*usage
), GFP_KERNEL
);
506 /* set some defaults so we do not need to check for null pointers */
507 usage
->x
= DEFAULT_ZERO
;
508 usage
->y
= DEFAULT_ZERO
;
509 usage
->cx
= DEFAULT_ZERO
;
510 usage
->cy
= DEFAULT_ZERO
;
511 usage
->p
= DEFAULT_ZERO
;
512 usage
->w
= DEFAULT_ZERO
;
513 usage
->h
= DEFAULT_ZERO
;
514 usage
->a
= DEFAULT_ZERO
;
515 usage
->contactid
= DEFAULT_ZERO
;
516 usage
->tip_state
= DEFAULT_FALSE
;
517 usage
->inrange_state
= DEFAULT_FALSE
;
518 usage
->confidence_state
= DEFAULT_TRUE
;
520 list_add_tail(&usage
->list
, &application
->mt_usages
);
525 static struct mt_application
*mt_allocate_application(struct mt_device
*td
,
526 struct hid_report
*report
)
528 unsigned int application
= report
->application
;
529 struct mt_application
*mt_application
;
531 mt_application
= devm_kzalloc(&td
->hdev
->dev
, sizeof(*mt_application
),
536 mt_application
->application
= application
;
537 INIT_LIST_HEAD(&mt_application
->mt_usages
);
539 if (application
== HID_DG_TOUCHSCREEN
)
540 mt_application
->mt_flags
|= INPUT_MT_DIRECT
;
543 * Model touchscreens providing buttons as touchpads.
545 if (application
== HID_DG_TOUCHPAD
) {
546 mt_application
->mt_flags
|= INPUT_MT_POINTER
;
547 td
->inputmode_value
= MT_INPUTMODE_TOUCHPAD
;
550 mt_application
->scantime
= DEFAULT_ZERO
;
551 mt_application
->raw_cc
= DEFAULT_ZERO
;
552 mt_application
->quirks
= td
->mtclass
.quirks
;
553 mt_application
->report_id
= report
->id
;
555 list_add_tail(&mt_application
->list
, &td
->applications
);
557 return mt_application
;
560 static struct mt_application
*mt_find_application(struct mt_device
*td
,
561 struct hid_report
*report
)
563 unsigned int application
= report
->application
;
564 struct mt_application
*tmp
, *mt_application
= NULL
;
566 list_for_each_entry(tmp
, &td
->applications
, list
) {
567 if (application
== tmp
->application
) {
568 if (!(td
->mtclass
.quirks
& MT_QUIRK_SEPARATE_APP_REPORT
) ||
569 tmp
->report_id
== report
->id
) {
570 mt_application
= tmp
;
577 mt_application
= mt_allocate_application(td
, report
);
579 return mt_application
;
582 static struct mt_report_data
*mt_allocate_report_data(struct mt_device
*td
,
583 struct hid_report
*report
)
585 struct mt_report_data
*rdata
;
586 struct hid_field
*field
;
589 rdata
= devm_kzalloc(&td
->hdev
->dev
, sizeof(*rdata
), GFP_KERNEL
);
593 rdata
->report
= report
;
594 rdata
->application
= mt_find_application(td
, report
);
596 if (!rdata
->application
) {
597 devm_kfree(&td
->hdev
->dev
, rdata
);
601 for (r
= 0; r
< report
->maxfield
; r
++) {
602 field
= report
->field
[r
];
604 if (!(HID_MAIN_ITEM_VARIABLE
& field
->flags
))
607 for (n
= 0; n
< field
->report_count
; n
++) {
608 if (field
->usage
[n
].hid
== HID_DG_CONTACTID
)
609 rdata
->is_mt_collection
= true;
613 list_add_tail(&rdata
->list
, &td
->reports
);
618 static struct mt_report_data
*mt_find_report_data(struct mt_device
*td
,
619 struct hid_report
*report
)
621 struct mt_report_data
*tmp
, *rdata
= NULL
;
623 list_for_each_entry(tmp
, &td
->reports
, list
) {
624 if (report
== tmp
->report
) {
631 rdata
= mt_allocate_report_data(td
, report
);
636 static void mt_store_field(struct hid_device
*hdev
,
637 struct mt_application
*application
,
641 struct mt_usages
*usage
;
644 if (list_empty(&application
->mt_usages
))
645 usage
= mt_allocate_usage(hdev
, application
);
647 usage
= list_last_entry(&application
->mt_usages
,
654 target
= (__s32
**)((char *)usage
+ offset
);
656 /* the value has already been filled, create a new slot */
657 if (*target
!= DEFAULT_TRUE
&&
658 *target
!= DEFAULT_FALSE
&&
659 *target
!= DEFAULT_ZERO
) {
660 if (usage
->contactid
== DEFAULT_ZERO
||
661 usage
->x
== DEFAULT_ZERO
||
662 usage
->y
== DEFAULT_ZERO
) {
664 "ignoring duplicate usage on incomplete");
667 usage
= mt_allocate_usage(hdev
, application
);
671 target
= (__s32
**)((char *)usage
+ offset
);
677 #define MT_STORE_FIELD(__name) \
678 mt_store_field(hdev, app, \
679 &field->value[usage->usage_index], \
680 offsetof(struct mt_usages, __name))
682 static int mt_touch_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
683 struct hid_field
*field
, struct hid_usage
*usage
,
684 unsigned long **bit
, int *max
, struct mt_application
*app
)
686 struct mt_device
*td
= hid_get_drvdata(hdev
);
687 struct mt_class
*cls
= &td
->mtclass
;
689 struct hid_usage
*prev_usage
= NULL
;
692 * Model touchscreens providing buttons as touchpads.
694 if (field
->application
== HID_DG_TOUCHSCREEN
&&
695 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
) {
696 app
->mt_flags
|= INPUT_MT_POINTER
;
697 td
->inputmode_value
= MT_INPUTMODE_TOUCHPAD
;
700 /* count the buttons on touchpads */
701 if ((usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
)
702 app
->buttons_count
++;
704 if (usage
->usage_index
)
705 prev_usage
= &field
->usage
[usage
->usage_index
- 1];
707 switch (usage
->hid
& HID_USAGE_PAGE
) {
710 switch (usage
->hid
) {
712 if (prev_usage
&& (prev_usage
->hid
== usage
->hid
)) {
713 code
= ABS_MT_TOOL_X
;
716 code
= ABS_MT_POSITION_X
;
720 set_abs(hi
->input
, code
, field
, cls
->sn_move
);
723 * A system multi-axis that exports X and Y has a high
724 * chance of being used directly on a surface
726 if (field
->application
== HID_GD_SYSTEM_MULTIAXIS
) {
727 __set_bit(INPUT_PROP_DIRECT
,
729 input_set_abs_params(hi
->input
,
737 if (prev_usage
&& (prev_usage
->hid
== usage
->hid
)) {
738 code
= ABS_MT_TOOL_Y
;
741 code
= ABS_MT_POSITION_Y
;
745 set_abs(hi
->input
, code
, field
, cls
->sn_move
);
751 case HID_UP_DIGITIZER
:
752 switch (usage
->hid
) {
754 if (app
->quirks
& MT_QUIRK_HOVERING
) {
755 input_set_abs_params(hi
->input
,
756 ABS_MT_DISTANCE
, 0, 1, 0, 0);
758 MT_STORE_FIELD(inrange_state
);
760 case HID_DG_CONFIDENCE
:
761 if ((cls
->name
== MT_CLS_WIN_8
||
762 cls
->name
== MT_CLS_WIN_8_FORCE_MULTI_INPUT
) &&
763 (field
->application
== HID_DG_TOUCHPAD
||
764 field
->application
== HID_DG_TOUCHSCREEN
))
765 app
->quirks
|= MT_QUIRK_CONFIDENCE
;
767 if (app
->quirks
& MT_QUIRK_CONFIDENCE
)
768 input_set_abs_params(hi
->input
,
773 MT_STORE_FIELD(confidence_state
);
775 case HID_DG_TIPSWITCH
:
776 if (field
->application
!= HID_GD_SYSTEM_MULTIAXIS
)
777 input_set_capability(hi
->input
,
779 MT_STORE_FIELD(tip_state
);
781 case HID_DG_CONTACTID
:
782 MT_STORE_FIELD(contactid
);
783 app
->touches_by_report
++;
786 if (!(app
->quirks
& MT_QUIRK_NO_AREA
))
787 set_abs(hi
->input
, ABS_MT_TOUCH_MAJOR
, field
,
792 if (!(app
->quirks
& MT_QUIRK_NO_AREA
)) {
793 set_abs(hi
->input
, ABS_MT_TOUCH_MINOR
, field
,
797 * Only set ABS_MT_ORIENTATION if it is not
798 * already set by the HID_DG_AZIMUTH usage.
800 if (!test_bit(ABS_MT_ORIENTATION
,
802 input_set_abs_params(hi
->input
,
803 ABS_MT_ORIENTATION
, 0, 1, 0, 0);
807 case HID_DG_TIPPRESSURE
:
808 set_abs(hi
->input
, ABS_MT_PRESSURE
, field
,
812 case HID_DG_SCANTIME
:
813 input_set_capability(hi
->input
, EV_MSC
, MSC_TIMESTAMP
);
814 app
->scantime
= &field
->value
[usage
->usage_index
];
815 app
->scantime_logical_max
= field
->logical_maximum
;
817 case HID_DG_CONTACTCOUNT
:
818 app
->have_contact_count
= true;
819 app
->raw_cc
= &field
->value
[usage
->usage_index
];
823 * Azimuth has the range of [0, MAX) representing a full
824 * revolution. Set ABS_MT_ORIENTATION to a quarter of
825 * MAX according the definition of ABS_MT_ORIENTATION
827 input_set_abs_params(hi
->input
, ABS_MT_ORIENTATION
,
828 -field
->logical_maximum
/ 4,
829 field
->logical_maximum
/ 4,
831 field
->logical_maximum
/ cls
->sn_move
: 0, 0);
834 case HID_DG_CONTACTMAX
:
835 /* contact max are global to the report */
838 /* Legacy devices use TIPSWITCH and not TOUCH.
839 * Let's just ignore this field. */
842 /* let hid-input decide for the others */
846 code
= BTN_MOUSE
+ ((usage
->hid
- 1) & HID_USAGE
);
848 * MS PTP spec says that external buttons left and right have
851 if ((app
->quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
) &&
852 field
->application
== HID_DG_TOUCHPAD
&&
853 (usage
->hid
& HID_USAGE
) > 1)
856 if (field
->application
== HID_GD_SYSTEM_MULTIAXIS
)
857 code
= BTN_0
+ ((usage
->hid
- 1) & HID_USAGE
);
859 hid_map_usage(hi
, usage
, bit
, max
, EV_KEY
, code
);
862 input_set_capability(hi
->input
, EV_KEY
, code
);
866 /* we do not want to map these: no input-oriented meaning */
873 static int mt_compute_slot(struct mt_device
*td
, struct mt_application
*app
,
874 struct mt_usages
*slot
,
875 struct input_dev
*input
)
877 __s32 quirks
= app
->quirks
;
879 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID
)
880 return *slot
->contactid
;
882 if (quirks
& MT_QUIRK_CYPRESS
)
883 return cypress_compute_slot(app
, slot
);
885 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTNUMBER
)
886 return app
->num_received
;
888 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
)
889 return *slot
->contactid
- 1;
891 return input_mt_get_slot_by_key(input
, *slot
->contactid
);
894 static void mt_release_pending_palms(struct mt_device
*td
,
895 struct mt_application
*app
,
896 struct input_dev
*input
)
899 bool need_sync
= false;
901 for_each_set_bit(slotnum
, app
->pending_palm_slots
, td
->maxcontacts
) {
902 clear_bit(slotnum
, app
->pending_palm_slots
);
904 input_mt_slot(input
, slotnum
);
905 input_mt_report_slot_inactive(input
);
911 input_mt_sync_frame(input
);
917 * this function is called when a whole packet has been received and processed,
918 * so that it can decide what to send to the input layer.
920 static void mt_sync_frame(struct mt_device
*td
, struct mt_application
*app
,
921 struct input_dev
*input
)
923 if (app
->quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
)
924 input_event(input
, EV_KEY
, BTN_LEFT
, app
->left_button_state
);
926 input_mt_sync_frame(input
);
927 input_event(input
, EV_MSC
, MSC_TIMESTAMP
, app
->timestamp
);
930 mt_release_pending_palms(td
, app
, input
);
932 app
->num_received
= 0;
933 app
->left_button_state
= 0;
935 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
))
936 set_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
);
938 clear_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
);
939 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
);
942 static int mt_compute_timestamp(struct mt_application
*app
, __s32 value
)
944 long delta
= value
- app
->prev_scantime
;
945 unsigned long jdelta
= jiffies_to_usecs(jiffies
- app
->jiffies
);
947 app
->jiffies
= jiffies
;
950 delta
+= app
->scantime_logical_max
;
952 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
955 if (jdelta
> MAX_TIMESTAMP_INTERVAL
)
956 /* No data received for a while, resync the timestamp. */
959 return app
->timestamp
+ delta
;
962 static int mt_touch_event(struct hid_device
*hid
, struct hid_field
*field
,
963 struct hid_usage
*usage
, __s32 value
)
965 /* we will handle the hidinput part later, now remains hiddev */
966 if (hid
->claimed
& HID_CLAIMED_HIDDEV
&& hid
->hiddev_hid_event
)
967 hid
->hiddev_hid_event(hid
, field
, usage
, value
);
972 static int mt_process_slot(struct mt_device
*td
, struct input_dev
*input
,
973 struct mt_application
*app
,
974 struct mt_usages
*slot
)
976 struct input_mt
*mt
= input
->mt
;
977 __s32 quirks
= app
->quirks
;
979 bool confidence_state
= true;
980 bool inrange_state
= false;
983 int tool
= MT_TOOL_FINGER
;
988 if ((quirks
& MT_QUIRK_CONTACT_CNT_ACCURATE
) &&
989 app
->num_received
>= app
->num_expected
)
992 if (!(quirks
& MT_QUIRK_ALWAYS_VALID
)) {
993 if (quirks
& MT_QUIRK_VALID_IS_INRANGE
)
994 valid
= *slot
->inrange_state
;
995 if (quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
996 valid
= *slot
->tip_state
;
997 if (quirks
& MT_QUIRK_VALID_IS_CONFIDENCE
)
998 valid
= *slot
->confidence_state
;
1004 slotnum
= mt_compute_slot(td
, app
, slot
, input
);
1005 if (slotnum
< 0 || slotnum
>= td
->maxcontacts
)
1008 if ((quirks
& MT_QUIRK_IGNORE_DUPLICATES
) && mt
) {
1009 struct input_mt_slot
*i_slot
= &mt
->slots
[slotnum
];
1011 if (input_mt_is_active(i_slot
) &&
1012 input_mt_is_used(mt
, i_slot
))
1016 if (quirks
& MT_QUIRK_CONFIDENCE
)
1017 confidence_state
= *slot
->confidence_state
;
1019 if (quirks
& MT_QUIRK_HOVERING
)
1020 inrange_state
= *slot
->inrange_state
;
1022 active
= *slot
->tip_state
|| inrange_state
;
1024 if (app
->application
== HID_GD_SYSTEM_MULTIAXIS
)
1025 tool
= MT_TOOL_DIAL
;
1026 else if (unlikely(!confidence_state
)) {
1027 tool
= MT_TOOL_PALM
;
1028 if (!active
&& mt
&&
1029 input_mt_is_active(&mt
->slots
[slotnum
])) {
1031 * The non-confidence was reported for
1032 * previously valid contact that is also no
1033 * longer valid. We can't simply report
1034 * lift-off as userspace will not be aware
1035 * of non-confidence, so we need to split
1036 * it into 2 events: active MT_TOOL_PALM
1037 * and a separate liftoff.
1040 set_bit(slotnum
, app
->pending_palm_slots
);
1044 input_mt_slot(input
, slotnum
);
1045 input_mt_report_slot_state(input
, tool
, active
);
1047 /* this finger is in proximity of the sensor */
1048 int wide
= (*slot
->w
> *slot
->h
);
1049 int major
= max(*slot
->w
, *slot
->h
);
1050 int minor
= min(*slot
->w
, *slot
->h
);
1051 int orientation
= wide
;
1055 if (slot
->a
!= DEFAULT_ZERO
) {
1057 * Azimuth is counter-clockwise and ranges from [0, MAX)
1058 * (a full revolution). Convert it to clockwise ranging
1061 * Note that ABS_MT_ORIENTATION require us to report
1062 * the limit of [-MAX/4, MAX/4], but the value can go
1063 * out of range to [-MAX/2, MAX/2] to report an upside
1067 max_azimuth
= input_abs_get_max(input
,
1068 ABS_MT_ORIENTATION
);
1069 if (azimuth
> max_azimuth
* 2)
1070 azimuth
-= max_azimuth
* 4;
1071 orientation
= -azimuth
;
1074 if (quirks
& MT_QUIRK_TOUCH_SIZE_SCALING
) {
1076 * divided by two to match visual scale of touch
1077 * for devices with this quirk
1083 input_event(input
, EV_ABS
, ABS_MT_POSITION_X
, *slot
->x
);
1084 input_event(input
, EV_ABS
, ABS_MT_POSITION_Y
, *slot
->y
);
1085 input_event(input
, EV_ABS
, ABS_MT_TOOL_X
, *slot
->cx
);
1086 input_event(input
, EV_ABS
, ABS_MT_TOOL_Y
, *slot
->cy
);
1087 input_event(input
, EV_ABS
, ABS_MT_DISTANCE
, !*slot
->tip_state
);
1088 input_event(input
, EV_ABS
, ABS_MT_ORIENTATION
, orientation
);
1089 input_event(input
, EV_ABS
, ABS_MT_PRESSURE
, *slot
->p
);
1090 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MAJOR
, major
);
1091 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MINOR
, minor
);
1093 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
);
1099 static void mt_process_mt_event(struct hid_device
*hid
,
1100 struct mt_application
*app
,
1101 struct hid_field
*field
,
1102 struct hid_usage
*usage
,
1106 __s32 quirks
= app
->quirks
;
1107 struct input_dev
*input
= field
->hidinput
->input
;
1109 if (!usage
->type
|| !(hid
->claimed
& HID_CLAIMED_INPUT
))
1112 if (quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
) {
1115 * For Win8 PTP touchpads we should only look at
1116 * non finger/touch events in the first_packet of a
1117 * (possible) multi-packet frame.
1123 * For Win8 PTP touchpads we map both the clickpad click
1124 * and any "external" left buttons to BTN_LEFT if a
1125 * device claims to have both we need to report 1 for
1126 * BTN_LEFT if either is pressed, so we or all values
1127 * together and report the result in mt_sync_frame().
1129 if (usage
->type
== EV_KEY
&& usage
->code
== BTN_LEFT
) {
1130 app
->left_button_state
|= value
;
1135 input_event(input
, usage
->type
, usage
->code
, value
);
1138 static void mt_touch_report(struct hid_device
*hid
,
1139 struct mt_report_data
*rdata
)
1141 struct mt_device
*td
= hid_get_drvdata(hid
);
1142 struct hid_report
*report
= rdata
->report
;
1143 struct mt_application
*app
= rdata
->application
;
1144 struct hid_field
*field
;
1145 struct input_dev
*input
;
1146 struct mt_usages
*slot
;
1151 int contact_count
= -1;
1153 /* sticky fingers release in progress, abort */
1154 if (test_and_set_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
))
1157 scantime
= *app
->scantime
;
1158 app
->timestamp
= mt_compute_timestamp(app
, scantime
);
1159 if (app
->raw_cc
!= DEFAULT_ZERO
)
1160 contact_count
= *app
->raw_cc
;
1163 * Includes multi-packet support where subsequent
1164 * packets are sent with zero contactcount.
1166 if (contact_count
>= 0) {
1168 * For Win8 PTPs the first packet (td->num_received == 0) may
1169 * have a contactcount of 0 if there only is a button event.
1170 * We double check that this is not a continuation packet
1171 * of a possible multi-packet frame be checking that the
1172 * timestamp has changed.
1174 if ((app
->quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
) &&
1175 app
->num_received
== 0 &&
1176 app
->prev_scantime
!= scantime
)
1177 app
->num_expected
= contact_count
;
1178 /* A non 0 contact count always indicates a first packet */
1179 else if (contact_count
)
1180 app
->num_expected
= contact_count
;
1182 app
->prev_scantime
= scantime
;
1184 first_packet
= app
->num_received
== 0;
1186 input
= report
->field
[0]->hidinput
->input
;
1188 list_for_each_entry(slot
, &app
->mt_usages
, list
) {
1189 if (!mt_process_slot(td
, input
, app
, slot
))
1190 app
->num_received
++;
1193 for (r
= 0; r
< report
->maxfield
; r
++) {
1194 field
= report
->field
[r
];
1195 count
= field
->report_count
;
1197 if (!(HID_MAIN_ITEM_VARIABLE
& field
->flags
))
1200 for (n
= 0; n
< count
; n
++)
1201 mt_process_mt_event(hid
, app
, field
,
1202 &field
->usage
[n
], field
->value
[n
],
1206 if (app
->num_received
>= app
->num_expected
)
1207 mt_sync_frame(td
, app
, input
);
1210 * Windows 8 specs says 2 things:
1211 * - once a contact has been reported, it has to be reported in each
1213 * - the report rate when fingers are present has to be at least
1214 * the refresh rate of the screen, 60 or 120 Hz
1216 * I interprete this that the specification forces a report rate of
1217 * at least 60 Hz for a touchscreen to be certified.
1218 * Which means that if we do not get a report whithin 16 ms, either
1219 * something wrong happens, either the touchscreen forgets to send
1220 * a release. Taking a reasonable margin allows to remove issues
1221 * with USB communication or the load of the machine.
1223 * Given that Win 8 devices are forced to send a release, this will
1224 * only affect laggish machines and the ones that have a firmware
1227 if (app
->quirks
& MT_QUIRK_STICKY_FINGERS
) {
1228 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
))
1229 mod_timer(&td
->release_timer
,
1230 jiffies
+ msecs_to_jiffies(100));
1232 del_timer(&td
->release_timer
);
1235 clear_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
);
1238 static int mt_touch_input_configured(struct hid_device
*hdev
,
1239 struct hid_input
*hi
,
1240 struct mt_application
*app
)
1242 struct mt_device
*td
= hid_get_drvdata(hdev
);
1243 struct mt_class
*cls
= &td
->mtclass
;
1244 struct input_dev
*input
= hi
->input
;
1247 if (!td
->maxcontacts
)
1248 td
->maxcontacts
= MT_DEFAULT_MAXCONTACT
;
1250 mt_post_parse(td
, app
);
1251 if (td
->serial_maybe
)
1252 mt_post_parse_default_settings(td
, app
);
1254 if (cls
->is_indirect
)
1255 app
->mt_flags
|= INPUT_MT_POINTER
;
1257 if (app
->quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
1258 app
->mt_flags
|= INPUT_MT_DROP_UNUSED
;
1260 /* check for clickpads */
1261 if ((app
->mt_flags
& INPUT_MT_POINTER
) &&
1262 (app
->buttons_count
== 1))
1263 td
->is_buttonpad
= true;
1265 if (td
->is_buttonpad
)
1266 __set_bit(INPUT_PROP_BUTTONPAD
, input
->propbit
);
1268 app
->pending_palm_slots
= devm_kcalloc(&hi
->input
->dev
,
1269 BITS_TO_LONGS(td
->maxcontacts
),
1272 if (!app
->pending_palm_slots
)
1275 ret
= input_mt_init_slots(input
, td
->maxcontacts
, app
->mt_flags
);
1283 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1285 static int mt_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
1286 struct hid_field
*field
, struct hid_usage
*usage
,
1287 unsigned long **bit
, int *max
)
1289 struct mt_device
*td
= hid_get_drvdata(hdev
);
1290 struct mt_application
*application
;
1291 struct mt_report_data
*rdata
;
1293 rdata
= mt_find_report_data(td
, field
->report
);
1295 hid_err(hdev
, "failed to allocate data for report\n");
1299 application
= rdata
->application
;
1302 * If mtclass.export_all_inputs is not set, only map fields from
1303 * TouchScreen or TouchPad collections. We need to ignore fields
1304 * that belong to other collections such as Mouse that might have
1305 * the same GenericDesktop usages.
1307 if (!td
->mtclass
.export_all_inputs
&&
1308 field
->application
!= HID_DG_TOUCHSCREEN
&&
1309 field
->application
!= HID_DG_PEN
&&
1310 field
->application
!= HID_DG_TOUCHPAD
&&
1311 field
->application
!= HID_GD_KEYBOARD
&&
1312 field
->application
!= HID_GD_SYSTEM_CONTROL
&&
1313 field
->application
!= HID_CP_CONSUMER_CONTROL
&&
1314 field
->application
!= HID_GD_WIRELESS_RADIO_CTLS
&&
1315 field
->application
!= HID_GD_SYSTEM_MULTIAXIS
&&
1316 !(field
->application
== HID_VD_ASUS_CUSTOM_MEDIA_KEYS
&&
1317 application
->quirks
& MT_QUIRK_ASUS_CUSTOM_UP
))
1321 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1322 * touchpad report descriptor. We need to treat these as an array to
1323 * map usages to input keys.
1325 if (field
->application
== HID_VD_ASUS_CUSTOM_MEDIA_KEYS
&&
1326 application
->quirks
& MT_QUIRK_ASUS_CUSTOM_UP
&&
1327 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_CUSTOM
) {
1328 set_bit(EV_REP
, hi
->input
->evbit
);
1329 if (field
->flags
& HID_MAIN_ITEM_VARIABLE
)
1330 field
->flags
&= ~HID_MAIN_ITEM_VARIABLE
;
1331 switch (usage
->hid
& HID_USAGE
) {
1332 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN
); break;
1333 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP
); break;
1334 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF
); break;
1335 case 0x6b: mt_map_key_clear(KEY_F21
); break;
1336 case 0x6c: mt_map_key_clear(KEY_SLEEP
); break;
1343 if (rdata
->is_mt_collection
)
1344 return mt_touch_input_mapping(hdev
, hi
, field
, usage
, bit
, max
,
1348 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1349 * for the stylus. Overwrite the hid_input application
1351 if (field
->physical
== HID_DG_STYLUS
)
1352 hi
->application
= HID_DG_STYLUS
;
1354 /* let hid-core decide for the others */
1358 static int mt_input_mapped(struct hid_device
*hdev
, struct hid_input
*hi
,
1359 struct hid_field
*field
, struct hid_usage
*usage
,
1360 unsigned long **bit
, int *max
)
1362 struct mt_device
*td
= hid_get_drvdata(hdev
);
1363 struct mt_report_data
*rdata
;
1365 rdata
= mt_find_report_data(td
, field
->report
);
1366 if (rdata
&& rdata
->is_mt_collection
) {
1367 /* We own these mappings, tell hid-input to ignore them */
1371 /* let hid-core decide for the others */
1375 static int mt_event(struct hid_device
*hid
, struct hid_field
*field
,
1376 struct hid_usage
*usage
, __s32 value
)
1378 struct mt_device
*td
= hid_get_drvdata(hid
);
1379 struct mt_report_data
*rdata
;
1381 rdata
= mt_find_report_data(td
, field
->report
);
1382 if (rdata
&& rdata
->is_mt_collection
)
1383 return mt_touch_event(hid
, field
, usage
, value
);
1388 static void mt_report(struct hid_device
*hid
, struct hid_report
*report
)
1390 struct mt_device
*td
= hid_get_drvdata(hid
);
1391 struct hid_field
*field
= report
->field
[0];
1392 struct mt_report_data
*rdata
;
1394 if (!(hid
->claimed
& HID_CLAIMED_INPUT
))
1397 rdata
= mt_find_report_data(td
, report
);
1398 if (rdata
&& rdata
->is_mt_collection
)
1399 return mt_touch_report(hid
, rdata
);
1401 if (field
&& field
->hidinput
&& field
->hidinput
->input
)
1402 input_sync(field
->hidinput
->input
);
1405 static bool mt_need_to_apply_feature(struct hid_device
*hdev
,
1406 struct hid_field
*field
,
1407 struct hid_usage
*usage
,
1408 enum latency_mode latency
,
1409 bool surface_switch
,
1411 bool *inputmode_found
)
1413 struct mt_device
*td
= hid_get_drvdata(hdev
);
1414 struct mt_class
*cls
= &td
->mtclass
;
1415 struct hid_report
*report
= field
->report
;
1416 unsigned int index
= usage
->usage_index
;
1421 switch (usage
->hid
) {
1422 case HID_DG_INPUTMODE
:
1424 * Some elan panels wrongly declare 2 input mode features,
1425 * and silently ignore when we set the value in the second
1426 * field. Skip the second feature and hope for the best.
1428 if (*inputmode_found
)
1431 if (cls
->quirks
& MT_QUIRK_FORCE_GET_FEATURE
) {
1432 report_len
= hid_report_len(report
);
1433 buf
= hid_alloc_report_buf(report
, GFP_KERNEL
);
1436 "failed to allocate buffer for report\n");
1439 hid_hw_raw_request(hdev
, report
->id
, buf
, report_len
,
1441 HID_REQ_GET_REPORT
);
1445 field
->value
[index
] = td
->inputmode_value
;
1446 *inputmode_found
= true;
1449 case HID_DG_CONTACTMAX
:
1450 if (cls
->maxcontacts
) {
1451 max
= min_t(int, field
->logical_maximum
,
1453 if (field
->value
[index
] != max
) {
1454 field
->value
[index
] = max
;
1460 case HID_DG_LATENCYMODE
:
1461 field
->value
[index
] = latency
;
1464 case HID_DG_SURFACESWITCH
:
1465 field
->value
[index
] = surface_switch
;
1468 case HID_DG_BUTTONSWITCH
:
1469 field
->value
[index
] = button_switch
;
1473 return false; /* no need to update the report */
1476 static void mt_set_modes(struct hid_device
*hdev
, enum latency_mode latency
,
1477 bool surface_switch
, bool button_switch
)
1479 struct hid_report_enum
*rep_enum
;
1480 struct hid_report
*rep
;
1481 struct hid_usage
*usage
;
1484 bool inputmode_found
= false;
1486 rep_enum
= &hdev
->report_enum
[HID_FEATURE_REPORT
];
1487 list_for_each_entry(rep
, &rep_enum
->report_list
, list
) {
1488 update_report
= false;
1490 for (i
= 0; i
< rep
->maxfield
; i
++) {
1491 /* Ignore if report count is out of bounds. */
1492 if (rep
->field
[i
]->report_count
< 1)
1495 for (j
= 0; j
< rep
->field
[i
]->maxusage
; j
++) {
1496 usage
= &rep
->field
[i
]->usage
[j
];
1498 if (mt_need_to_apply_feature(hdev
,
1505 update_report
= true;
1510 hid_hw_request(hdev
, rep
, HID_REQ_SET_REPORT
);
1514 static void mt_post_parse_default_settings(struct mt_device
*td
,
1515 struct mt_application
*app
)
1517 __s32 quirks
= app
->quirks
;
1519 /* unknown serial device needs special quirks */
1520 if (list_is_singular(&app
->mt_usages
)) {
1521 quirks
|= MT_QUIRK_ALWAYS_VALID
;
1522 quirks
&= ~MT_QUIRK_NOT_SEEN_MEANS_UP
;
1523 quirks
&= ~MT_QUIRK_VALID_IS_INRANGE
;
1524 quirks
&= ~MT_QUIRK_VALID_IS_CONFIDENCE
;
1525 quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
1528 app
->quirks
= quirks
;
1531 static void mt_post_parse(struct mt_device
*td
, struct mt_application
*app
)
1533 if (!app
->have_contact_count
)
1534 app
->quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
1537 static int mt_input_configured(struct hid_device
*hdev
, struct hid_input
*hi
)
1539 struct mt_device
*td
= hid_get_drvdata(hdev
);
1541 const char *suffix
= NULL
;
1542 struct mt_report_data
*rdata
;
1543 struct mt_application
*mt_application
= NULL
;
1544 struct hid_report
*report
;
1547 list_for_each_entry(report
, &hi
->reports
, hidinput_list
) {
1548 rdata
= mt_find_report_data(td
, report
);
1550 hid_err(hdev
, "failed to allocate data for report\n");
1554 mt_application
= rdata
->application
;
1556 if (rdata
->is_mt_collection
) {
1557 ret
= mt_touch_input_configured(hdev
, hi
,
1564 switch (hi
->application
) {
1565 case HID_GD_KEYBOARD
:
1568 case HID_DG_TOUCHPAD
:
1569 case HID_GD_SYSTEM_CONTROL
:
1570 case HID_CP_CONSUMER_CONTROL
:
1571 case HID_GD_WIRELESS_RADIO_CTLS
:
1572 case HID_GD_SYSTEM_MULTIAXIS
:
1573 /* already handled by hid core */
1575 case HID_DG_TOUCHSCREEN
:
1576 /* we do not set suffix = "Touchscreen" */
1577 hi
->input
->name
= hdev
->name
;
1580 /* force BTN_STYLUS to allow tablet matching in udev */
1581 __set_bit(BTN_STYLUS
, hi
->input
->keybit
);
1583 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS
:
1584 suffix
= "Custom Media Keys";
1595 name
= devm_kzalloc(&hi
->input
->dev
,
1596 strlen(hdev
->name
) + strlen(suffix
) + 2,
1599 sprintf(name
, "%s %s", hdev
->name
, suffix
);
1600 hi
->input
->name
= name
;
1607 static void mt_fix_const_field(struct hid_field
*field
, unsigned int usage
)
1609 if (field
->usage
[0].hid
!= usage
||
1610 !(field
->flags
& HID_MAIN_ITEM_CONSTANT
))
1613 field
->flags
&= ~HID_MAIN_ITEM_CONSTANT
;
1614 field
->flags
|= HID_MAIN_ITEM_VARIABLE
;
1617 static void mt_fix_const_fields(struct hid_device
*hdev
, unsigned int usage
)
1619 struct hid_report
*report
;
1622 list_for_each_entry(report
,
1623 &hdev
->report_enum
[HID_INPUT_REPORT
].report_list
,
1626 if (!report
->maxfield
)
1629 for (i
= 0; i
< report
->maxfield
; i
++)
1630 if (report
->field
[i
]->maxusage
>= 1)
1631 mt_fix_const_field(report
->field
[i
], usage
);
1635 static void mt_release_contacts(struct hid_device
*hid
)
1637 struct hid_input
*hidinput
;
1638 struct mt_application
*application
;
1639 struct mt_device
*td
= hid_get_drvdata(hid
);
1641 list_for_each_entry(hidinput
, &hid
->inputs
, list
) {
1642 struct input_dev
*input_dev
= hidinput
->input
;
1643 struct input_mt
*mt
= input_dev
->mt
;
1647 for (i
= 0; i
< mt
->num_slots
; i
++) {
1648 input_mt_slot(input_dev
, i
);
1649 input_mt_report_slot_inactive(input_dev
);
1651 input_mt_sync_frame(input_dev
);
1652 input_sync(input_dev
);
1656 list_for_each_entry(application
, &td
->applications
, list
) {
1657 application
->num_received
= 0;
1661 static void mt_expired_timeout(struct timer_list
*t
)
1663 struct mt_device
*td
= from_timer(td
, t
, release_timer
);
1664 struct hid_device
*hdev
= td
->hdev
;
1667 * An input report came in just before we release the sticky fingers,
1668 * it will take care of the sticky fingers.
1670 if (test_and_set_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
))
1672 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
))
1673 mt_release_contacts(hdev
);
1674 clear_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
);
1677 static int mt_probe(struct hid_device
*hdev
, const struct hid_device_id
*id
)
1680 struct mt_device
*td
;
1681 const struct mt_class
*mtclass
= mt_classes
; /* MT_CLS_DEFAULT */
1683 for (i
= 0; mt_classes
[i
].name
; i
++) {
1684 if (id
->driver_data
== mt_classes
[i
].name
) {
1685 mtclass
= &(mt_classes
[i
]);
1690 td
= devm_kzalloc(&hdev
->dev
, sizeof(struct mt_device
), GFP_KERNEL
);
1692 dev_err(&hdev
->dev
, "cannot allocate multitouch data\n");
1696 td
->mtclass
= *mtclass
;
1697 td
->inputmode_value
= MT_INPUTMODE_TOUCHSCREEN
;
1698 hid_set_drvdata(hdev
, td
);
1700 INIT_LIST_HEAD(&td
->applications
);
1701 INIT_LIST_HEAD(&td
->reports
);
1703 if (id
->vendor
== HID_ANY_ID
&& id
->product
== HID_ANY_ID
)
1704 td
->serial_maybe
= true;
1706 /* This allows the driver to correctly support devices
1707 * that emit events over several HID messages.
1709 hdev
->quirks
|= HID_QUIRK_NO_INPUT_SYNC
;
1712 * This allows the driver to handle different input sensors
1713 * that emits events through different applications on the same HID
1716 hdev
->quirks
|= HID_QUIRK_INPUT_PER_APP
;
1718 if (id
->group
!= HID_GROUP_MULTITOUCH_WIN_8
)
1719 hdev
->quirks
|= HID_QUIRK_MULTI_INPUT
;
1721 if (mtclass
->quirks
& MT_QUIRK_FORCE_MULTI_INPUT
) {
1722 hdev
->quirks
&= ~HID_QUIRK_INPUT_PER_APP
;
1723 hdev
->quirks
|= HID_QUIRK_MULTI_INPUT
;
1726 timer_setup(&td
->release_timer
, mt_expired_timeout
, 0);
1728 ret
= hid_parse(hdev
);
1732 if (mtclass
->quirks
& MT_QUIRK_FIX_CONST_CONTACT_ID
)
1733 mt_fix_const_fields(hdev
, HID_DG_CONTACTID
);
1735 ret
= hid_hw_start(hdev
, HID_CONNECT_DEFAULT
);
1739 ret
= sysfs_create_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
1741 dev_warn(&hdev
->dev
, "Cannot allocate sysfs group for %s\n",
1744 mt_set_modes(hdev
, HID_LATENCY_NORMAL
, true, true);
1750 static int mt_reset_resume(struct hid_device
*hdev
)
1752 mt_release_contacts(hdev
);
1753 mt_set_modes(hdev
, HID_LATENCY_NORMAL
, true, true);
1757 static int mt_resume(struct hid_device
*hdev
)
1759 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1760 * It should be safe to send it to other devices too.
1761 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1763 hid_hw_idle(hdev
, 0, 0, HID_REQ_SET_IDLE
);
1769 static void mt_remove(struct hid_device
*hdev
)
1771 struct mt_device
*td
= hid_get_drvdata(hdev
);
1773 del_timer_sync(&td
->release_timer
);
1775 sysfs_remove_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
1780 * This list contains only:
1781 * - VID/PID of products not working with the default multitouch handling
1782 * - 2 generic rules.
1783 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1785 static const struct hid_device_id mt_devices
[] = {
1788 { .driver_data
= MT_CLS_3M
,
1789 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1790 USB_DEVICE_ID_3M1968
) },
1791 { .driver_data
= MT_CLS_3M
,
1792 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1793 USB_DEVICE_ID_3M2256
) },
1794 { .driver_data
= MT_CLS_3M
,
1795 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1796 USB_DEVICE_ID_3M3266
) },
1799 { .driver_data
= MT_CLS_EXPORT_ALL_INPUTS
,
1800 MT_USB_DEVICE(USB_VENDOR_ID_ANTON
,
1801 USB_DEVICE_ID_ANTON_TOUCH_PAD
) },
1804 { .driver_data
= MT_CLS_ASUS
,
1805 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1806 USB_VENDOR_ID_ASUSTEK
,
1807 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD
) },
1810 { .driver_data
= MT_CLS_SERIAL
,
1811 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL
,
1812 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER
) },
1814 /* Baanto multitouch devices */
1815 { .driver_data
= MT_CLS_NSMU
,
1816 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO
,
1817 USB_DEVICE_ID_BAANTO_MT_190W2
) },
1820 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
1821 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1822 USB_DEVICE_ID_CANDO_MULTI_TOUCH
) },
1823 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
1824 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1825 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6
) },
1827 /* Chunghwa Telecom touch panels */
1828 { .driver_data
= MT_CLS_NSMU
,
1829 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT
,
1830 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH
) },
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
) },
1902 { .driver_data
= MT_CLS_EGALAX
,
1903 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1904 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002
) },
1907 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
1908 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1909 USB_VENDOR_ID_ELAN
, 0x313a) },
1911 /* Elitegroup panel */
1912 { .driver_data
= MT_CLS_SERIAL
,
1913 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP
,
1914 USB_DEVICE_ID_ELITEGROUP_05D8
) },
1916 /* Flatfrog Panels */
1917 { .driver_data
= MT_CLS_FLATFROG
,
1918 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG
,
1919 USB_DEVICE_ID_MULTITOUCH_3200
) },
1921 /* FocalTech Panels */
1922 { .driver_data
= MT_CLS_SERIAL
,
1923 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL
,
1924 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH
) },
1926 /* GeneralTouch panel */
1927 { .driver_data
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
1928 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1929 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS
) },
1930 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1931 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1932 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS
) },
1933 { .driver_data
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
1934 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1935 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101
) },
1936 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1937 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1938 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102
) },
1939 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1940 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1941 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106
) },
1942 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1943 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1944 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A
) },
1945 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1946 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1947 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100
) },
1949 /* Gametel game controller */
1950 { .driver_data
= MT_CLS_NSMU
,
1951 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL
,
1952 USB_DEVICE_ID_GAMETEL_MT_MODE
) },
1954 /* GoodTouch panels */
1955 { .driver_data
= MT_CLS_NSMU
,
1956 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH
,
1957 USB_DEVICE_ID_GOODTOUCH_000f
) },
1960 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
1961 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT
,
1962 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH
) },
1964 /* Ilitek dual touch panel */
1965 { .driver_data
= MT_CLS_NSMU
,
1966 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK
,
1967 USB_DEVICE_ID_ILITEK_MULTITOUCH
) },
1969 /* LG Melfas panel */
1970 { .driver_data
= MT_CLS_LG
,
1971 HID_USB_DEVICE(USB_VENDOR_ID_LG
,
1972 USB_DEVICE_ID_LG_MELFAS_MT
) },
1973 { .driver_data
= MT_CLS_LG
,
1974 HID_DEVICE(BUS_I2C
, HID_GROUP_GENERIC
,
1975 USB_VENDOR_ID_LG
, I2C_DEVICE_ID_LG_7010
) },
1977 /* Lenovo X1 TAB Gen 2 */
1978 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
1979 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1980 USB_VENDOR_ID_LENOVO
,
1981 USB_DEVICE_ID_LENOVO_X1_TAB
) },
1983 /* Lenovo X1 TAB Gen 3 */
1984 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
1985 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1986 USB_VENDOR_ID_LENOVO
,
1987 USB_DEVICE_ID_LENOVO_X1_TAB3
) },
1990 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
1991 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
1992 USB_DEVICE_ID_ASUS_T91MT
)},
1993 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
1994 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
1995 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO
) },
1996 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
1997 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX
,
1998 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART
) },
2001 { .driver_data
= MT_CLS_NSMU
,
2002 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK
,
2003 USB_DEVICE_ID_NOVATEK_PCT
) },
2006 { .driver_data
= MT_CLS_NSMU
,
2007 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2008 USB_VENDOR_ID_NTRIG
, 0x1b05) },
2010 /* Panasonic panels */
2011 { .driver_data
= MT_CLS_PANASONIC
,
2012 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
2013 USB_DEVICE_ID_PANABOARD_UBT780
) },
2014 { .driver_data
= MT_CLS_PANASONIC
,
2015 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
2016 USB_DEVICE_ID_PANABOARD_UBT880
) },
2018 /* PixArt optical touch screen */
2019 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
2020 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
2021 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN
) },
2022 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
2023 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
2024 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1
) },
2025 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
2026 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
2027 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2
) },
2029 /* PixCir-based panels */
2030 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
2031 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
2032 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH
) },
2034 /* Quanta-based panels */
2035 { .driver_data
= MT_CLS_CONFIDENCE_CONTACT_ID
,
2036 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA
,
2037 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001
) },
2039 /* Razer touchpads */
2040 { .driver_data
= MT_CLS_RAZER_BLADE_STEALTH
,
2041 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2042 USB_VENDOR_ID_SYNAPTICS
, 0x8323) },
2044 /* Smart Tech panels */
2045 { .driver_data
= MT_CLS_SMART_TECH
,
2046 MT_USB_DEVICE(0x0b8c, 0x0092)},
2048 /* Stantum panels */
2049 { .driver_data
= MT_CLS_CONFIDENCE
,
2050 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM
,
2051 USB_DEVICE_ID_MTP_STM
)},
2053 /* Synaptics devices */
2054 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2055 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2056 USB_VENDOR_ID_SYNAPTICS
, 0xce08) },
2058 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2059 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2060 USB_VENDOR_ID_SYNAPTICS
, 0xce09) },
2062 /* TopSeed panels */
2063 { .driver_data
= MT_CLS_TOPSEED
,
2064 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2
,
2065 USB_DEVICE_ID_TOPSEED2_PERIPAD_701
) },
2067 /* Touch International panels */
2068 { .driver_data
= MT_CLS_NSMU
,
2069 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL
,
2070 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH
) },
2073 { .driver_data
= MT_CLS_NSMU
,
2074 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
2075 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709
) },
2076 { .driver_data
= MT_CLS_NSMU
,
2077 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
2078 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19
) },
2081 { .driver_data
= MT_CLS_VTL
,
2082 MT_USB_DEVICE(USB_VENDOR_ID_VTL
,
2083 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F
) },
2085 /* Wistron panels */
2086 { .driver_data
= MT_CLS_NSMU
,
2087 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON
,
2088 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH
) },
2091 { .driver_data
= MT_CLS_NSMU
,
2092 MT_USB_DEVICE(USB_VENDOR_ID_XAT
,
2093 USB_DEVICE_ID_XAT_CSR
) },
2096 { .driver_data
= MT_CLS_NSMU
,
2097 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2098 USB_DEVICE_ID_XIROKU_SPX
) },
2099 { .driver_data
= MT_CLS_NSMU
,
2100 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2101 USB_DEVICE_ID_XIROKU_MPX
) },
2102 { .driver_data
= MT_CLS_NSMU
,
2103 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2104 USB_DEVICE_ID_XIROKU_CSR
) },
2105 { .driver_data
= MT_CLS_NSMU
,
2106 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2107 USB_DEVICE_ID_XIROKU_SPX1
) },
2108 { .driver_data
= MT_CLS_NSMU
,
2109 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2110 USB_DEVICE_ID_XIROKU_MPX1
) },
2111 { .driver_data
= MT_CLS_NSMU
,
2112 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2113 USB_DEVICE_ID_XIROKU_CSR1
) },
2114 { .driver_data
= MT_CLS_NSMU
,
2115 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2116 USB_DEVICE_ID_XIROKU_SPX2
) },
2117 { .driver_data
= MT_CLS_NSMU
,
2118 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2119 USB_DEVICE_ID_XIROKU_MPX2
) },
2120 { .driver_data
= MT_CLS_NSMU
,
2121 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2122 USB_DEVICE_ID_XIROKU_CSR2
) },
2124 /* Google MT devices */
2125 { .driver_data
= MT_CLS_GOOGLE
,
2126 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_ANY
, USB_VENDOR_ID_GOOGLE
,
2127 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE
) },
2129 /* Generic MT device */
2130 { HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH
, HID_ANY_ID
, HID_ANY_ID
) },
2132 /* Generic Win 8 certified MT device */
2133 { .driver_data
= MT_CLS_WIN_8
,
2134 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH_WIN_8
,
2135 HID_ANY_ID
, HID_ANY_ID
) },
2138 MODULE_DEVICE_TABLE(hid
, mt_devices
);
2140 static const struct hid_usage_id mt_grabbed_usages
[] = {
2141 { HID_ANY_ID
, HID_ANY_ID
, HID_ANY_ID
},
2142 { HID_ANY_ID
- 1, HID_ANY_ID
- 1, HID_ANY_ID
- 1}
2145 static struct hid_driver mt_driver
= {
2146 .name
= "hid-multitouch",
2147 .id_table
= mt_devices
,
2149 .remove
= mt_remove
,
2150 .input_mapping
= mt_input_mapping
,
2151 .input_mapped
= mt_input_mapped
,
2152 .input_configured
= mt_input_configured
,
2153 .feature_mapping
= mt_feature_mapping
,
2154 .usage_table
= mt_grabbed_usages
,
2156 .report
= mt_report
,
2158 .reset_resume
= mt_reset_resume
,
2159 .resume
= mt_resume
,
2162 module_hid_driver(mt_driver
);