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)
73 #define MT_QUIRK_DISABLE_WAKEUP BIT(21)
74 #define MT_QUIRK_ORIENTATION_INVERT BIT(22)
76 #define MT_INPUTMODE_TOUCHSCREEN 0x02
77 #define MT_INPUTMODE_TOUCHPAD 0x03
79 #define MT_BUTTONTYPE_CLICKPAD 0
82 HID_LATENCY_NORMAL
= 0,
86 #define MT_IO_FLAGS_RUNNING 0
87 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
88 #define MT_IO_FLAGS_PENDING_SLOTS 2
90 static const bool mtrue
= true; /* default for true */
91 static const bool mfalse
; /* default for false */
92 static const __s32 mzero
; /* default for 0 */
94 #define DEFAULT_TRUE ((void *)&mtrue)
95 #define DEFAULT_FALSE ((void *)&mfalse)
96 #define DEFAULT_ZERO ((void *)&mzero)
99 struct list_head list
;
100 __s32
*x
, *y
, *cx
, *cy
, *p
, *w
, *h
, *a
;
101 __s32
*contactid
; /* the device ContactID assigned to this slot */
102 bool *tip_state
; /* is the touch valid? */
103 bool *inrange_state
; /* is the finger in proximity of the sensor? */
104 bool *confidence_state
; /* is the touch made by a finger? */
107 struct mt_application
{
108 struct list_head list
;
109 unsigned int application
;
110 unsigned int report_id
;
111 struct list_head mt_usages
; /* mt usages list */
115 __s32
*scantime
; /* scantime reported */
116 __s32 scantime_logical_max
; /* max value for raw scantime */
118 __s32
*raw_cc
; /* contact count in the report */
119 int left_button_state
; /* left button state */
120 unsigned int mt_flags
; /* flags to pass to input-mt */
122 unsigned long *pending_palm_slots
; /* slots where we reported palm
123 * and need to release */
125 __u8 num_received
; /* how many contacts we received */
126 __u8 num_expected
; /* expected last contact index */
127 __u8 buttons_count
; /* number of physical buttons per touchpad */
128 __u8 touches_by_report
; /* how many touches are present in one report:
129 * 1 means we should use a serial protocol
130 * > 1 means hybrid (multitouch) protocol
133 unsigned long jiffies
; /* the frame's jiffies */
134 int timestamp
; /* the timestamp to be sent */
135 int prev_scantime
; /* scantime reported previously */
137 bool have_contact_count
;
141 __s32 name
; /* MT_CLS */
143 __s32 sn_move
; /* Signal/noise ratio for move events */
144 __s32 sn_width
; /* Signal/noise ratio for width events */
145 __s32 sn_height
; /* Signal/noise ratio for height events */
146 __s32 sn_pressure
; /* Signal/noise ratio for pressure events */
148 bool is_indirect
; /* true for touchpads */
149 bool export_all_inputs
; /* do not ignore mouse, keyboards, etc... */
152 struct mt_report_data
{
153 struct list_head list
;
154 struct hid_report
*report
;
155 struct mt_application
*application
;
156 bool is_mt_collection
;
160 struct mt_class mtclass
; /* our mt device class */
161 struct timer_list release_timer
; /* to release sticky fingers */
162 struct hid_device
*hdev
; /* hid_device we're attached to */
163 unsigned long mt_io_flags
; /* mt flags (MT_IO_FLAGS_*) */
164 __u8 inputmode_value
; /* InputMode HID feature value */
166 bool is_buttonpad
; /* is this device a button pad? */
167 bool serial_maybe
; /* need to check for serial protocol */
169 struct list_head applications
;
170 struct list_head reports
;
173 static void mt_post_parse_default_settings(struct mt_device
*td
,
174 struct mt_application
*app
);
175 static void mt_post_parse(struct mt_device
*td
, struct mt_application
*app
);
177 /* classes of device behavior */
178 #define MT_CLS_DEFAULT 0x0001
180 #define MT_CLS_SERIAL 0x0002
181 #define MT_CLS_CONFIDENCE 0x0003
182 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
183 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
184 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
185 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
186 /* reserved 0x0008 */
187 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
188 #define MT_CLS_NSMU 0x000a
189 /* reserved 0x0010 */
190 /* reserved 0x0011 */
191 #define MT_CLS_WIN_8 0x0012
192 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
193 /* reserved 0x0014 */
194 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT 0x0015
195 #define MT_CLS_WIN_8_DISABLE_WAKEUP 0x0016
196 #define MT_CLS_WIN_8_NO_STICKY_FINGERS 0x0017
197 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU 0x0018
199 /* vendor specific classes */
200 #define MT_CLS_3M 0x0101
201 /* reserved 0x0102 */
202 #define MT_CLS_EGALAX 0x0103
203 #define MT_CLS_EGALAX_SERIAL 0x0104
204 #define MT_CLS_TOPSEED 0x0105
205 #define MT_CLS_PANASONIC 0x0106
206 #define MT_CLS_FLATFROG 0x0107
207 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
208 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
209 #define MT_CLS_LG 0x010a
210 #define MT_CLS_ASUS 0x010b
211 #define MT_CLS_VTL 0x0110
212 #define MT_CLS_GOOGLE 0x0111
213 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112
214 #define MT_CLS_SMART_TECH 0x0113
216 #define MT_DEFAULT_MAXCONTACT 10
217 #define MT_MAX_MAXCONTACT 250
220 * Resync device and local timestamps after that many microseconds without
223 #define MAX_TIMESTAMP_INTERVAL 1000000
225 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
226 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
229 * these device-dependent functions determine what slot corresponds
230 * to a valid contact that was just read.
233 static int cypress_compute_slot(struct mt_application
*application
,
234 struct mt_usages
*slot
)
236 if (*slot
->contactid
!= 0 || application
->num_received
== 0)
237 return *slot
->contactid
;
242 static const struct mt_class mt_classes
[] = {
243 { .name
= MT_CLS_DEFAULT
,
244 .quirks
= MT_QUIRK_ALWAYS_VALID
|
245 MT_QUIRK_CONTACT_CNT_ACCURATE
},
246 { .name
= MT_CLS_NSMU
,
247 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
},
248 { .name
= MT_CLS_SERIAL
,
249 .quirks
= MT_QUIRK_ALWAYS_VALID
},
250 { .name
= MT_CLS_CONFIDENCE
,
251 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
},
252 { .name
= MT_CLS_CONFIDENCE_CONTACT_ID
,
253 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
254 MT_QUIRK_SLOT_IS_CONTACTID
},
255 { .name
= MT_CLS_CONFIDENCE_MINUS_ONE
,
256 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
257 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
},
258 { .name
= MT_CLS_DUAL_INRANGE_CONTACTID
,
259 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
260 MT_QUIRK_SLOT_IS_CONTACTID
,
262 { .name
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
263 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
264 MT_QUIRK_SLOT_IS_CONTACTNUMBER
,
266 { .name
= MT_CLS_INRANGE_CONTACTNUMBER
,
267 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
268 MT_QUIRK_SLOT_IS_CONTACTNUMBER
},
269 { .name
= MT_CLS_WIN_8
,
270 .quirks
= MT_QUIRK_ALWAYS_VALID
|
271 MT_QUIRK_IGNORE_DUPLICATES
|
273 MT_QUIRK_CONTACT_CNT_ACCURATE
|
274 MT_QUIRK_STICKY_FINGERS
|
275 MT_QUIRK_WIN8_PTP_BUTTONS
,
276 .export_all_inputs
= true },
277 { .name
= MT_CLS_EXPORT_ALL_INPUTS
,
278 .quirks
= MT_QUIRK_ALWAYS_VALID
|
279 MT_QUIRK_CONTACT_CNT_ACCURATE
,
280 .export_all_inputs
= true },
281 { .name
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
282 .quirks
= MT_QUIRK_ALWAYS_VALID
|
283 MT_QUIRK_IGNORE_DUPLICATES
|
285 MT_QUIRK_CONTACT_CNT_ACCURATE
|
286 MT_QUIRK_STICKY_FINGERS
|
287 MT_QUIRK_WIN8_PTP_BUTTONS
|
288 MT_QUIRK_FORCE_MULTI_INPUT
,
289 .export_all_inputs
= true },
290 { .name
= MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU
,
291 .quirks
= MT_QUIRK_IGNORE_DUPLICATES
|
293 MT_QUIRK_CONTACT_CNT_ACCURATE
|
294 MT_QUIRK_STICKY_FINGERS
|
295 MT_QUIRK_WIN8_PTP_BUTTONS
|
296 MT_QUIRK_FORCE_MULTI_INPUT
|
297 MT_QUIRK_NOT_SEEN_MEANS_UP
,
298 .export_all_inputs
= true },
299 { .name
= MT_CLS_WIN_8_DISABLE_WAKEUP
,
300 .quirks
= MT_QUIRK_ALWAYS_VALID
|
301 MT_QUIRK_IGNORE_DUPLICATES
|
303 MT_QUIRK_CONTACT_CNT_ACCURATE
|
304 MT_QUIRK_STICKY_FINGERS
|
305 MT_QUIRK_WIN8_PTP_BUTTONS
|
306 MT_QUIRK_DISABLE_WAKEUP
,
307 .export_all_inputs
= true },
308 { .name
= MT_CLS_WIN_8_NO_STICKY_FINGERS
,
309 .quirks
= MT_QUIRK_ALWAYS_VALID
|
310 MT_QUIRK_IGNORE_DUPLICATES
|
312 MT_QUIRK_CONTACT_CNT_ACCURATE
|
313 MT_QUIRK_WIN8_PTP_BUTTONS
,
314 .export_all_inputs
= true },
317 * vendor specific classes
320 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
321 MT_QUIRK_SLOT_IS_CONTACTID
|
322 MT_QUIRK_TOUCH_SIZE_SCALING
,
328 { .name
= MT_CLS_EGALAX
,
329 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
330 MT_QUIRK_VALID_IS_INRANGE
,
334 { .name
= MT_CLS_EGALAX_SERIAL
,
335 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
336 MT_QUIRK_ALWAYS_VALID
,
340 { .name
= MT_CLS_TOPSEED
,
341 .quirks
= MT_QUIRK_ALWAYS_VALID
,
345 { .name
= MT_CLS_PANASONIC
,
346 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
,
348 { .name
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
349 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
350 MT_QUIRK_VALID_IS_INRANGE
|
351 MT_QUIRK_SLOT_IS_CONTACTID
,
354 { .name
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
355 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
356 MT_QUIRK_SLOT_IS_CONTACTID
359 { .name
= MT_CLS_FLATFROG
,
360 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
366 .quirks
= MT_QUIRK_ALWAYS_VALID
|
367 MT_QUIRK_FIX_CONST_CONTACT_ID
|
368 MT_QUIRK_IGNORE_DUPLICATES
|
370 MT_QUIRK_CONTACT_CNT_ACCURATE
},
371 { .name
= MT_CLS_ASUS
,
372 .quirks
= MT_QUIRK_ALWAYS_VALID
|
373 MT_QUIRK_CONTACT_CNT_ACCURATE
|
374 MT_QUIRK_ASUS_CUSTOM_UP
},
375 { .name
= MT_CLS_VTL
,
376 .quirks
= MT_QUIRK_ALWAYS_VALID
|
377 MT_QUIRK_CONTACT_CNT_ACCURATE
|
378 MT_QUIRK_FORCE_GET_FEATURE
,
380 { .name
= MT_CLS_GOOGLE
,
381 .quirks
= MT_QUIRK_ALWAYS_VALID
|
382 MT_QUIRK_CONTACT_CNT_ACCURATE
|
383 MT_QUIRK_SLOT_IS_CONTACTID
|
386 { .name
= MT_CLS_RAZER_BLADE_STEALTH
,
387 .quirks
= MT_QUIRK_ALWAYS_VALID
|
388 MT_QUIRK_IGNORE_DUPLICATES
|
390 MT_QUIRK_CONTACT_CNT_ACCURATE
|
391 MT_QUIRK_WIN8_PTP_BUTTONS
,
393 { .name
= MT_CLS_SMART_TECH
,
394 .quirks
= MT_QUIRK_ALWAYS_VALID
|
395 MT_QUIRK_IGNORE_DUPLICATES
|
396 MT_QUIRK_CONTACT_CNT_ACCURATE
|
397 MT_QUIRK_SEPARATE_APP_REPORT
,
402 static ssize_t
mt_show_quirks(struct device
*dev
,
403 struct device_attribute
*attr
,
406 struct hid_device
*hdev
= to_hid_device(dev
);
407 struct mt_device
*td
= hid_get_drvdata(hdev
);
409 return sprintf(buf
, "%u\n", td
->mtclass
.quirks
);
412 static ssize_t
mt_set_quirks(struct device
*dev
,
413 struct device_attribute
*attr
,
414 const char *buf
, size_t count
)
416 struct hid_device
*hdev
= to_hid_device(dev
);
417 struct mt_device
*td
= hid_get_drvdata(hdev
);
418 struct mt_application
*application
;
422 if (kstrtoul(buf
, 0, &val
))
425 td
->mtclass
.quirks
= val
;
427 list_for_each_entry(application
, &td
->applications
, list
) {
428 application
->quirks
= val
;
429 if (!application
->have_contact_count
)
430 application
->quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
436 static DEVICE_ATTR(quirks
, S_IWUSR
| S_IRUGO
, mt_show_quirks
, mt_set_quirks
);
438 static struct attribute
*sysfs_attrs
[] = {
439 &dev_attr_quirks
.attr
,
443 static const struct attribute_group mt_attribute_group
= {
447 static void mt_get_feature(struct hid_device
*hdev
, struct hid_report
*report
)
450 u32 size
= hid_report_len(report
);
454 * Do not fetch the feature report if the device has been explicitly
455 * marked as non-capable.
457 if (hdev
->quirks
& HID_QUIRK_NO_INIT_REPORTS
)
460 buf
= hid_alloc_report_buf(report
, GFP_KERNEL
);
464 ret
= hid_hw_raw_request(hdev
, report
->id
, buf
, size
,
465 HID_FEATURE_REPORT
, HID_REQ_GET_REPORT
);
467 dev_warn(&hdev
->dev
, "failed to fetch feature %d\n",
470 ret
= hid_report_raw_event(hdev
, HID_FEATURE_REPORT
, buf
,
473 dev_warn(&hdev
->dev
, "failed to report feature\n");
479 static void mt_feature_mapping(struct hid_device
*hdev
,
480 struct hid_field
*field
, struct hid_usage
*usage
)
482 struct mt_device
*td
= hid_get_drvdata(hdev
);
484 switch (usage
->hid
) {
485 case HID_DG_CONTACTMAX
:
486 mt_get_feature(hdev
, field
->report
);
488 td
->maxcontacts
= field
->value
[0];
489 if (!td
->maxcontacts
&&
490 field
->logical_maximum
<= MT_MAX_MAXCONTACT
)
491 td
->maxcontacts
= field
->logical_maximum
;
492 if (td
->mtclass
.maxcontacts
)
493 /* check if the maxcontacts is given by the class */
494 td
->maxcontacts
= td
->mtclass
.maxcontacts
;
497 case HID_DG_BUTTONTYPE
:
498 if (usage
->usage_index
>= field
->report_count
) {
499 dev_err(&hdev
->dev
, "HID_DG_BUTTONTYPE out of range\n");
503 mt_get_feature(hdev
, field
->report
);
504 if (field
->value
[usage
->usage_index
] == MT_BUTTONTYPE_CLICKPAD
)
505 td
->is_buttonpad
= true;
509 /* Retrieve the Win8 blob once to enable some devices */
510 if (usage
->usage_index
== 0)
511 mt_get_feature(hdev
, field
->report
);
516 static void set_abs(struct input_dev
*input
, unsigned int code
,
517 struct hid_field
*field
, int snratio
)
519 int fmin
= field
->logical_minimum
;
520 int fmax
= field
->logical_maximum
;
521 int fuzz
= snratio
? (fmax
- fmin
) / snratio
: 0;
522 input_set_abs_params(input
, code
, fmin
, fmax
, fuzz
, 0);
523 input_abs_set_res(input
, code
, hidinput_calc_abs_res(field
, code
));
526 static struct mt_usages
*mt_allocate_usage(struct hid_device
*hdev
,
527 struct mt_application
*application
)
529 struct mt_usages
*usage
;
531 usage
= devm_kzalloc(&hdev
->dev
, sizeof(*usage
), GFP_KERNEL
);
535 /* set some defaults so we do not need to check for null pointers */
536 usage
->x
= DEFAULT_ZERO
;
537 usage
->y
= DEFAULT_ZERO
;
538 usage
->cx
= DEFAULT_ZERO
;
539 usage
->cy
= DEFAULT_ZERO
;
540 usage
->p
= DEFAULT_ZERO
;
541 usage
->w
= DEFAULT_ZERO
;
542 usage
->h
= DEFAULT_ZERO
;
543 usage
->a
= DEFAULT_ZERO
;
544 usage
->contactid
= DEFAULT_ZERO
;
545 usage
->tip_state
= DEFAULT_FALSE
;
546 usage
->inrange_state
= DEFAULT_FALSE
;
547 usage
->confidence_state
= DEFAULT_TRUE
;
549 list_add_tail(&usage
->list
, &application
->mt_usages
);
554 static struct mt_application
*mt_allocate_application(struct mt_device
*td
,
555 struct hid_report
*report
)
557 unsigned int application
= report
->application
;
558 struct mt_application
*mt_application
;
560 mt_application
= devm_kzalloc(&td
->hdev
->dev
, sizeof(*mt_application
),
565 mt_application
->application
= application
;
566 INIT_LIST_HEAD(&mt_application
->mt_usages
);
568 if (application
== HID_DG_TOUCHSCREEN
)
569 mt_application
->mt_flags
|= INPUT_MT_DIRECT
;
572 * Model touchscreens providing buttons as touchpads.
574 if (application
== HID_DG_TOUCHPAD
) {
575 mt_application
->mt_flags
|= INPUT_MT_POINTER
;
576 td
->inputmode_value
= MT_INPUTMODE_TOUCHPAD
;
579 mt_application
->scantime
= DEFAULT_ZERO
;
580 mt_application
->raw_cc
= DEFAULT_ZERO
;
581 mt_application
->quirks
= td
->mtclass
.quirks
;
582 mt_application
->report_id
= report
->id
;
584 list_add_tail(&mt_application
->list
, &td
->applications
);
586 return mt_application
;
589 static struct mt_application
*mt_find_application(struct mt_device
*td
,
590 struct hid_report
*report
)
592 unsigned int application
= report
->application
;
593 struct mt_application
*tmp
, *mt_application
= NULL
;
595 list_for_each_entry(tmp
, &td
->applications
, list
) {
596 if (application
== tmp
->application
) {
597 if (!(td
->mtclass
.quirks
& MT_QUIRK_SEPARATE_APP_REPORT
) ||
598 tmp
->report_id
== report
->id
) {
599 mt_application
= tmp
;
606 mt_application
= mt_allocate_application(td
, report
);
608 return mt_application
;
611 static struct mt_report_data
*mt_allocate_report_data(struct mt_device
*td
,
612 struct hid_report
*report
)
614 struct mt_report_data
*rdata
;
615 struct hid_field
*field
;
618 rdata
= devm_kzalloc(&td
->hdev
->dev
, sizeof(*rdata
), GFP_KERNEL
);
622 rdata
->report
= report
;
623 rdata
->application
= mt_find_application(td
, report
);
625 if (!rdata
->application
) {
626 devm_kfree(&td
->hdev
->dev
, rdata
);
630 for (r
= 0; r
< report
->maxfield
; r
++) {
631 field
= report
->field
[r
];
633 if (!(HID_MAIN_ITEM_VARIABLE
& field
->flags
))
636 if (field
->logical
== HID_DG_FINGER
|| td
->hdev
->group
!= HID_GROUP_MULTITOUCH_WIN_8
) {
637 for (n
= 0; n
< field
->report_count
; n
++) {
638 if (field
->usage
[n
].hid
== HID_DG_CONTACTID
) {
639 rdata
->is_mt_collection
= true;
646 list_add_tail(&rdata
->list
, &td
->reports
);
651 static struct mt_report_data
*mt_find_report_data(struct mt_device
*td
,
652 struct hid_report
*report
)
654 struct mt_report_data
*tmp
, *rdata
= NULL
;
656 list_for_each_entry(tmp
, &td
->reports
, list
) {
657 if (report
== tmp
->report
) {
664 rdata
= mt_allocate_report_data(td
, report
);
669 static void mt_store_field(struct hid_device
*hdev
,
670 struct mt_application
*application
,
674 struct mt_usages
*usage
;
677 if (list_empty(&application
->mt_usages
))
678 usage
= mt_allocate_usage(hdev
, application
);
680 usage
= list_last_entry(&application
->mt_usages
,
687 target
= (__s32
**)((char *)usage
+ offset
);
689 /* the value has already been filled, create a new slot */
690 if (*target
!= DEFAULT_TRUE
&&
691 *target
!= DEFAULT_FALSE
&&
692 *target
!= DEFAULT_ZERO
) {
693 if (usage
->contactid
== DEFAULT_ZERO
||
694 usage
->x
== DEFAULT_ZERO
||
695 usage
->y
== DEFAULT_ZERO
) {
697 "ignoring duplicate usage on incomplete");
700 usage
= mt_allocate_usage(hdev
, application
);
704 target
= (__s32
**)((char *)usage
+ offset
);
710 #define MT_STORE_FIELD(__name) \
711 mt_store_field(hdev, app, \
712 &field->value[usage->usage_index], \
713 offsetof(struct mt_usages, __name))
715 static int mt_touch_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
716 struct hid_field
*field
, struct hid_usage
*usage
,
717 unsigned long **bit
, int *max
, struct mt_application
*app
)
719 struct mt_device
*td
= hid_get_drvdata(hdev
);
720 struct mt_class
*cls
= &td
->mtclass
;
722 struct hid_usage
*prev_usage
= NULL
;
725 * Model touchscreens providing buttons as touchpads.
727 if (field
->application
== HID_DG_TOUCHSCREEN
&&
728 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
) {
729 app
->mt_flags
|= INPUT_MT_POINTER
;
730 td
->inputmode_value
= MT_INPUTMODE_TOUCHPAD
;
733 /* count the buttons on touchpads */
734 if ((usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
)
735 app
->buttons_count
++;
737 if (usage
->usage_index
)
738 prev_usage
= &field
->usage
[usage
->usage_index
- 1];
740 switch (usage
->hid
& HID_USAGE_PAGE
) {
743 switch (usage
->hid
) {
745 if (prev_usage
&& (prev_usage
->hid
== usage
->hid
)) {
746 code
= ABS_MT_TOOL_X
;
749 code
= ABS_MT_POSITION_X
;
753 set_abs(hi
->input
, code
, field
, cls
->sn_move
);
756 * A system multi-axis that exports X and Y has a high
757 * chance of being used directly on a surface
759 if (field
->application
== HID_GD_SYSTEM_MULTIAXIS
) {
760 __set_bit(INPUT_PROP_DIRECT
,
762 input_set_abs_params(hi
->input
,
770 if (prev_usage
&& (prev_usage
->hid
== usage
->hid
)) {
771 code
= ABS_MT_TOOL_Y
;
774 code
= ABS_MT_POSITION_Y
;
778 set_abs(hi
->input
, code
, field
, cls
->sn_move
);
784 case HID_UP_DIGITIZER
:
785 switch (usage
->hid
) {
787 if (app
->quirks
& MT_QUIRK_HOVERING
) {
788 input_set_abs_params(hi
->input
,
789 ABS_MT_DISTANCE
, 0, 1, 0, 0);
791 MT_STORE_FIELD(inrange_state
);
793 case HID_DG_CONFIDENCE
:
794 if ((cls
->name
== MT_CLS_WIN_8
||
795 cls
->name
== MT_CLS_WIN_8_FORCE_MULTI_INPUT
||
796 cls
->name
== MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU
||
797 cls
->name
== MT_CLS_WIN_8_DISABLE_WAKEUP
) &&
798 (field
->application
== HID_DG_TOUCHPAD
||
799 field
->application
== HID_DG_TOUCHSCREEN
))
800 app
->quirks
|= MT_QUIRK_CONFIDENCE
;
802 if (app
->quirks
& MT_QUIRK_CONFIDENCE
)
803 input_set_abs_params(hi
->input
,
808 MT_STORE_FIELD(confidence_state
);
810 case HID_DG_TIPSWITCH
:
811 if (field
->application
!= HID_GD_SYSTEM_MULTIAXIS
)
812 input_set_capability(hi
->input
,
814 MT_STORE_FIELD(tip_state
);
816 case HID_DG_CONTACTID
:
817 MT_STORE_FIELD(contactid
);
818 app
->touches_by_report
++;
821 if (!(app
->quirks
& MT_QUIRK_NO_AREA
))
822 set_abs(hi
->input
, ABS_MT_TOUCH_MAJOR
, field
,
827 if (!(app
->quirks
& MT_QUIRK_NO_AREA
)) {
828 set_abs(hi
->input
, ABS_MT_TOUCH_MINOR
, field
,
832 * Only set ABS_MT_ORIENTATION if it is not
833 * already set by the HID_DG_AZIMUTH usage.
835 if (!test_bit(ABS_MT_ORIENTATION
,
837 input_set_abs_params(hi
->input
,
838 ABS_MT_ORIENTATION
, 0, 1, 0, 0);
842 case HID_DG_TIPPRESSURE
:
843 set_abs(hi
->input
, ABS_MT_PRESSURE
, field
,
847 case HID_DG_SCANTIME
:
848 input_set_capability(hi
->input
, EV_MSC
, MSC_TIMESTAMP
);
849 app
->scantime
= &field
->value
[usage
->usage_index
];
850 app
->scantime_logical_max
= field
->logical_maximum
;
852 case HID_DG_CONTACTCOUNT
:
853 app
->have_contact_count
= true;
854 app
->raw_cc
= &field
->value
[usage
->usage_index
];
858 * Azimuth has the range of [0, MAX) representing a full
859 * revolution. Set ABS_MT_ORIENTATION to a quarter of
860 * MAX according the definition of ABS_MT_ORIENTATION
862 input_set_abs_params(hi
->input
, ABS_MT_ORIENTATION
,
863 -field
->logical_maximum
/ 4,
864 field
->logical_maximum
/ 4,
866 field
->logical_maximum
/ cls
->sn_move
: 0, 0);
869 case HID_DG_CONTACTMAX
:
870 /* contact max are global to the report */
873 /* Legacy devices use TIPSWITCH and not TOUCH.
874 * Let's just ignore this field. */
877 /* let hid-input decide for the others */
881 code
= BTN_MOUSE
+ ((usage
->hid
- 1) & HID_USAGE
);
883 * MS PTP spec says that external buttons left and right have
886 if ((app
->quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
) &&
887 field
->application
== HID_DG_TOUCHPAD
&&
888 (usage
->hid
& HID_USAGE
) > 1)
891 if (field
->application
== HID_GD_SYSTEM_MULTIAXIS
)
892 code
= BTN_0
+ ((usage
->hid
- 1) & HID_USAGE
);
894 hid_map_usage(hi
, usage
, bit
, max
, EV_KEY
, code
);
897 input_set_capability(hi
->input
, EV_KEY
, code
);
901 /* we do not want to map these: no input-oriented meaning */
908 static int mt_compute_slot(struct mt_device
*td
, struct mt_application
*app
,
909 struct mt_usages
*slot
,
910 struct input_dev
*input
)
912 __s32 quirks
= app
->quirks
;
914 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID
)
915 return *slot
->contactid
;
917 if (quirks
& MT_QUIRK_CYPRESS
)
918 return cypress_compute_slot(app
, slot
);
920 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTNUMBER
)
921 return app
->num_received
;
923 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
)
924 return *slot
->contactid
- 1;
926 return input_mt_get_slot_by_key(input
, *slot
->contactid
);
929 static void mt_release_pending_palms(struct mt_device
*td
,
930 struct mt_application
*app
,
931 struct input_dev
*input
)
934 bool need_sync
= false;
936 for_each_set_bit(slotnum
, app
->pending_palm_slots
, td
->maxcontacts
) {
937 clear_bit(slotnum
, app
->pending_palm_slots
);
939 input_mt_slot(input
, slotnum
);
940 input_mt_report_slot_inactive(input
);
946 input_mt_sync_frame(input
);
952 * this function is called when a whole packet has been received and processed,
953 * so that it can decide what to send to the input layer.
955 static void mt_sync_frame(struct mt_device
*td
, struct mt_application
*app
,
956 struct input_dev
*input
)
958 if (app
->quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
)
959 input_event(input
, EV_KEY
, BTN_LEFT
, app
->left_button_state
);
961 input_mt_sync_frame(input
);
962 input_event(input
, EV_MSC
, MSC_TIMESTAMP
, app
->timestamp
);
965 mt_release_pending_palms(td
, app
, input
);
967 app
->num_received
= 0;
968 app
->left_button_state
= 0;
970 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
))
971 set_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
);
973 clear_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
);
974 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
);
977 static int mt_compute_timestamp(struct mt_application
*app
, __s32 value
)
979 long delta
= value
- app
->prev_scantime
;
980 unsigned long jdelta
= jiffies_to_usecs(jiffies
- app
->jiffies
);
982 app
->jiffies
= jiffies
;
985 delta
+= app
->scantime_logical_max
;
987 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
990 if (jdelta
> MAX_TIMESTAMP_INTERVAL
)
991 /* No data received for a while, resync the timestamp. */
994 return app
->timestamp
+ delta
;
997 static int mt_touch_event(struct hid_device
*hid
, struct hid_field
*field
,
998 struct hid_usage
*usage
, __s32 value
)
1000 /* we will handle the hidinput part later, now remains hiddev */
1001 if (hid
->claimed
& HID_CLAIMED_HIDDEV
&& hid
->hiddev_hid_event
)
1002 hid
->hiddev_hid_event(hid
, field
, usage
, value
);
1007 static int mt_process_slot(struct mt_device
*td
, struct input_dev
*input
,
1008 struct mt_application
*app
,
1009 struct mt_usages
*slot
)
1011 struct input_mt
*mt
= input
->mt
;
1012 struct hid_device
*hdev
= td
->hdev
;
1013 __s32 quirks
= app
->quirks
;
1015 bool confidence_state
= true;
1016 bool inrange_state
= false;
1019 int tool
= MT_TOOL_FINGER
;
1024 if ((quirks
& MT_QUIRK_CONTACT_CNT_ACCURATE
) &&
1025 app
->num_received
>= app
->num_expected
)
1028 if (!(quirks
& MT_QUIRK_ALWAYS_VALID
)) {
1029 if (quirks
& MT_QUIRK_VALID_IS_INRANGE
)
1030 valid
= *slot
->inrange_state
;
1031 if (quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
1032 valid
= *slot
->tip_state
;
1033 if (quirks
& MT_QUIRK_VALID_IS_CONFIDENCE
)
1034 valid
= *slot
->confidence_state
;
1040 slotnum
= mt_compute_slot(td
, app
, slot
, input
);
1041 if (slotnum
< 0 || slotnum
>= td
->maxcontacts
)
1044 if ((quirks
& MT_QUIRK_IGNORE_DUPLICATES
) && mt
) {
1045 struct input_mt_slot
*i_slot
= &mt
->slots
[slotnum
];
1047 if (input_mt_is_active(i_slot
) &&
1048 input_mt_is_used(mt
, i_slot
))
1052 if (quirks
& MT_QUIRK_CONFIDENCE
)
1053 confidence_state
= *slot
->confidence_state
;
1055 if (quirks
& MT_QUIRK_HOVERING
)
1056 inrange_state
= *slot
->inrange_state
;
1058 active
= *slot
->tip_state
|| inrange_state
;
1060 if (app
->application
== HID_GD_SYSTEM_MULTIAXIS
)
1061 tool
= MT_TOOL_DIAL
;
1062 else if (unlikely(!confidence_state
)) {
1063 tool
= MT_TOOL_PALM
;
1064 if (!active
&& mt
&&
1065 input_mt_is_active(&mt
->slots
[slotnum
])) {
1067 * The non-confidence was reported for
1068 * previously valid contact that is also no
1069 * longer valid. We can't simply report
1070 * lift-off as userspace will not be aware
1071 * of non-confidence, so we need to split
1072 * it into 2 events: active MT_TOOL_PALM
1073 * and a separate liftoff.
1076 set_bit(slotnum
, app
->pending_palm_slots
);
1080 input_mt_slot(input
, slotnum
);
1081 input_mt_report_slot_state(input
, tool
, active
);
1083 /* this finger is in proximity of the sensor */
1084 int wide
= (*slot
->w
> *slot
->h
);
1085 int major
= max(*slot
->w
, *slot
->h
);
1086 int minor
= min(*slot
->w
, *slot
->h
);
1087 int orientation
= wide
;
1095 if (slot
->a
!= DEFAULT_ZERO
) {
1097 * Azimuth is counter-clockwise and ranges from [0, MAX)
1098 * (a full revolution). Convert it to clockwise ranging
1101 * Note that ABS_MT_ORIENTATION require us to report
1102 * the limit of [-MAX/4, MAX/4], but the value can go
1103 * out of range to [-MAX/2, MAX/2] to report an upside
1107 max_azimuth
= input_abs_get_max(input
,
1108 ABS_MT_ORIENTATION
);
1109 if (azimuth
> max_azimuth
* 2)
1110 azimuth
-= max_azimuth
* 4;
1111 orientation
= -azimuth
;
1112 if (quirks
& MT_QUIRK_ORIENTATION_INVERT
)
1113 orientation
= -orientation
;
1117 if (quirks
& MT_QUIRK_TOUCH_SIZE_SCALING
) {
1119 * divided by two to match visual scale of touch
1120 * for devices with this quirk
1126 x
= hdev
->quirks
& HID_QUIRK_X_INVERT
?
1127 input_abs_get_max(input
, ABS_MT_POSITION_X
) - *slot
->x
:
1129 y
= hdev
->quirks
& HID_QUIRK_Y_INVERT
?
1130 input_abs_get_max(input
, ABS_MT_POSITION_Y
) - *slot
->y
:
1132 cx
= hdev
->quirks
& HID_QUIRK_X_INVERT
?
1133 input_abs_get_max(input
, ABS_MT_POSITION_X
) - *slot
->cx
:
1135 cy
= hdev
->quirks
& HID_QUIRK_Y_INVERT
?
1136 input_abs_get_max(input
, ABS_MT_POSITION_Y
) - *slot
->cy
:
1139 input_event(input
, EV_ABS
, ABS_MT_POSITION_X
, x
);
1140 input_event(input
, EV_ABS
, ABS_MT_POSITION_Y
, y
);
1141 input_event(input
, EV_ABS
, ABS_MT_TOOL_X
, cx
);
1142 input_event(input
, EV_ABS
, ABS_MT_TOOL_Y
, cy
);
1143 input_event(input
, EV_ABS
, ABS_MT_DISTANCE
, !*slot
->tip_state
);
1144 input_event(input
, EV_ABS
, ABS_MT_ORIENTATION
, orientation
);
1145 input_event(input
, EV_ABS
, ABS_MT_PRESSURE
, *slot
->p
);
1146 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MAJOR
, major
);
1147 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MINOR
, minor
);
1149 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
);
1155 static void mt_process_mt_event(struct hid_device
*hid
,
1156 struct mt_application
*app
,
1157 struct hid_field
*field
,
1158 struct hid_usage
*usage
,
1162 __s32 quirks
= app
->quirks
;
1163 struct input_dev
*input
= field
->hidinput
->input
;
1165 if (!usage
->type
|| !(hid
->claimed
& HID_CLAIMED_INPUT
))
1168 if (quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
) {
1171 * For Win8 PTP touchpads we should only look at
1172 * non finger/touch events in the first_packet of a
1173 * (possible) multi-packet frame.
1179 * For Win8 PTP touchpads we map both the clickpad click
1180 * and any "external" left buttons to BTN_LEFT if a
1181 * device claims to have both we need to report 1 for
1182 * BTN_LEFT if either is pressed, so we or all values
1183 * together and report the result in mt_sync_frame().
1185 if (usage
->type
== EV_KEY
&& usage
->code
== BTN_LEFT
) {
1186 app
->left_button_state
|= value
;
1191 input_event(input
, usage
->type
, usage
->code
, value
);
1194 static void mt_touch_report(struct hid_device
*hid
,
1195 struct mt_report_data
*rdata
)
1197 struct mt_device
*td
= hid_get_drvdata(hid
);
1198 struct hid_report
*report
= rdata
->report
;
1199 struct mt_application
*app
= rdata
->application
;
1200 struct hid_field
*field
;
1201 struct input_dev
*input
;
1202 struct mt_usages
*slot
;
1207 int contact_count
= -1;
1209 /* sticky fingers release in progress, abort */
1210 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
))
1213 scantime
= *app
->scantime
;
1214 app
->timestamp
= mt_compute_timestamp(app
, scantime
);
1215 if (app
->raw_cc
!= DEFAULT_ZERO
)
1216 contact_count
= *app
->raw_cc
;
1219 * Includes multi-packet support where subsequent
1220 * packets are sent with zero contactcount.
1222 if (contact_count
>= 0) {
1224 * For Win8 PTPs the first packet (td->num_received == 0) may
1225 * have a contactcount of 0 if there only is a button event.
1226 * We double check that this is not a continuation packet
1227 * of a possible multi-packet frame be checking that the
1228 * timestamp has changed.
1230 if ((app
->quirks
& MT_QUIRK_WIN8_PTP_BUTTONS
) &&
1231 app
->num_received
== 0 &&
1232 app
->prev_scantime
!= scantime
)
1233 app
->num_expected
= contact_count
;
1234 /* A non 0 contact count always indicates a first packet */
1235 else if (contact_count
)
1236 app
->num_expected
= contact_count
;
1238 app
->prev_scantime
= scantime
;
1240 first_packet
= app
->num_received
== 0;
1242 input
= report
->field
[0]->hidinput
->input
;
1244 list_for_each_entry(slot
, &app
->mt_usages
, list
) {
1245 if (!mt_process_slot(td
, input
, app
, slot
))
1246 app
->num_received
++;
1249 for (r
= 0; r
< report
->maxfield
; r
++) {
1250 field
= report
->field
[r
];
1251 count
= field
->report_count
;
1253 if (!(HID_MAIN_ITEM_VARIABLE
& field
->flags
))
1256 for (n
= 0; n
< count
; n
++)
1257 mt_process_mt_event(hid
, app
, field
,
1258 &field
->usage
[n
], field
->value
[n
],
1262 if (app
->num_received
>= app
->num_expected
)
1263 mt_sync_frame(td
, app
, input
);
1266 * Windows 8 specs says 2 things:
1267 * - once a contact has been reported, it has to be reported in each
1269 * - the report rate when fingers are present has to be at least
1270 * the refresh rate of the screen, 60 or 120 Hz
1272 * I interprete this that the specification forces a report rate of
1273 * at least 60 Hz for a touchscreen to be certified.
1274 * Which means that if we do not get a report whithin 16 ms, either
1275 * something wrong happens, either the touchscreen forgets to send
1276 * a release. Taking a reasonable margin allows to remove issues
1277 * with USB communication or the load of the machine.
1279 * Given that Win 8 devices are forced to send a release, this will
1280 * only affect laggish machines and the ones that have a firmware
1283 if (app
->quirks
& MT_QUIRK_STICKY_FINGERS
) {
1284 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
))
1285 mod_timer(&td
->release_timer
,
1286 jiffies
+ msecs_to_jiffies(100));
1288 del_timer(&td
->release_timer
);
1291 clear_bit_unlock(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
);
1294 static int mt_touch_input_configured(struct hid_device
*hdev
,
1295 struct hid_input
*hi
,
1296 struct mt_application
*app
)
1298 struct mt_device
*td
= hid_get_drvdata(hdev
);
1299 struct mt_class
*cls
= &td
->mtclass
;
1300 struct input_dev
*input
= hi
->input
;
1303 if (!td
->maxcontacts
)
1304 td
->maxcontacts
= MT_DEFAULT_MAXCONTACT
;
1306 mt_post_parse(td
, app
);
1307 if (td
->serial_maybe
)
1308 mt_post_parse_default_settings(td
, app
);
1310 if (cls
->is_indirect
)
1311 app
->mt_flags
|= INPUT_MT_POINTER
;
1313 if (app
->quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
1314 app
->mt_flags
|= INPUT_MT_DROP_UNUSED
;
1316 /* check for clickpads */
1317 if ((app
->mt_flags
& INPUT_MT_POINTER
) &&
1318 (app
->buttons_count
== 1))
1319 td
->is_buttonpad
= true;
1321 if (td
->is_buttonpad
)
1322 __set_bit(INPUT_PROP_BUTTONPAD
, input
->propbit
);
1324 app
->pending_palm_slots
= devm_kcalloc(&hi
->input
->dev
,
1325 BITS_TO_LONGS(td
->maxcontacts
),
1328 if (!app
->pending_palm_slots
)
1331 ret
= input_mt_init_slots(input
, td
->maxcontacts
, app
->mt_flags
);
1339 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1341 static int mt_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
1342 struct hid_field
*field
, struct hid_usage
*usage
,
1343 unsigned long **bit
, int *max
)
1345 struct mt_device
*td
= hid_get_drvdata(hdev
);
1346 struct mt_application
*application
;
1347 struct mt_report_data
*rdata
;
1349 rdata
= mt_find_report_data(td
, field
->report
);
1351 hid_err(hdev
, "failed to allocate data for report\n");
1355 application
= rdata
->application
;
1358 * If mtclass.export_all_inputs is not set, only map fields from
1359 * TouchScreen or TouchPad collections. We need to ignore fields
1360 * that belong to other collections such as Mouse that might have
1361 * the same GenericDesktop usages.
1363 if (!td
->mtclass
.export_all_inputs
&&
1364 field
->application
!= HID_DG_TOUCHSCREEN
&&
1365 field
->application
!= HID_DG_PEN
&&
1366 field
->application
!= HID_DG_TOUCHPAD
&&
1367 field
->application
!= HID_GD_KEYBOARD
&&
1368 field
->application
!= HID_GD_SYSTEM_CONTROL
&&
1369 field
->application
!= HID_CP_CONSUMER_CONTROL
&&
1370 field
->application
!= HID_GD_WIRELESS_RADIO_CTLS
&&
1371 field
->application
!= HID_GD_SYSTEM_MULTIAXIS
&&
1372 !(field
->application
== HID_VD_ASUS_CUSTOM_MEDIA_KEYS
&&
1373 application
->quirks
& MT_QUIRK_ASUS_CUSTOM_UP
))
1377 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1378 * touchpad report descriptor. We need to treat these as an array to
1379 * map usages to input keys.
1381 if (field
->application
== HID_VD_ASUS_CUSTOM_MEDIA_KEYS
&&
1382 application
->quirks
& MT_QUIRK_ASUS_CUSTOM_UP
&&
1383 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_CUSTOM
) {
1384 set_bit(EV_REP
, hi
->input
->evbit
);
1385 if (field
->flags
& HID_MAIN_ITEM_VARIABLE
)
1386 field
->flags
&= ~HID_MAIN_ITEM_VARIABLE
;
1387 switch (usage
->hid
& HID_USAGE
) {
1388 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN
); break;
1389 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP
); break;
1390 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF
); break;
1391 case 0x6b: mt_map_key_clear(KEY_F21
); break;
1392 case 0x6c: mt_map_key_clear(KEY_SLEEP
); break;
1399 if (rdata
->is_mt_collection
)
1400 return mt_touch_input_mapping(hdev
, hi
, field
, usage
, bit
, max
,
1404 * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1405 * for the stylus. Overwrite the hid_input application
1407 if (field
->physical
== HID_DG_STYLUS
)
1408 hi
->application
= HID_DG_STYLUS
;
1410 /* let hid-core decide for the others */
1414 static int mt_input_mapped(struct hid_device
*hdev
, struct hid_input
*hi
,
1415 struct hid_field
*field
, struct hid_usage
*usage
,
1416 unsigned long **bit
, int *max
)
1418 struct mt_device
*td
= hid_get_drvdata(hdev
);
1419 struct mt_report_data
*rdata
;
1421 rdata
= mt_find_report_data(td
, field
->report
);
1422 if (rdata
&& rdata
->is_mt_collection
) {
1423 /* We own these mappings, tell hid-input to ignore them */
1427 /* let hid-core decide for the others */
1431 static int mt_event(struct hid_device
*hid
, struct hid_field
*field
,
1432 struct hid_usage
*usage
, __s32 value
)
1434 struct mt_device
*td
= hid_get_drvdata(hid
);
1435 struct mt_report_data
*rdata
;
1437 rdata
= mt_find_report_data(td
, field
->report
);
1438 if (rdata
&& rdata
->is_mt_collection
)
1439 return mt_touch_event(hid
, field
, usage
, value
);
1444 static void mt_report(struct hid_device
*hid
, struct hid_report
*report
)
1446 struct mt_device
*td
= hid_get_drvdata(hid
);
1447 struct hid_field
*field
= report
->field
[0];
1448 struct mt_report_data
*rdata
;
1450 if (!(hid
->claimed
& HID_CLAIMED_INPUT
))
1453 rdata
= mt_find_report_data(td
, report
);
1454 if (rdata
&& rdata
->is_mt_collection
)
1455 return mt_touch_report(hid
, rdata
);
1457 if (field
&& field
->hidinput
&& field
->hidinput
->input
)
1458 input_sync(field
->hidinput
->input
);
1461 static bool mt_need_to_apply_feature(struct hid_device
*hdev
,
1462 struct hid_field
*field
,
1463 struct hid_usage
*usage
,
1464 enum latency_mode latency
,
1465 bool surface_switch
,
1467 bool *inputmode_found
)
1469 struct mt_device
*td
= hid_get_drvdata(hdev
);
1470 struct mt_class
*cls
= &td
->mtclass
;
1471 struct hid_report
*report
= field
->report
;
1472 unsigned int index
= usage
->usage_index
;
1477 switch (usage
->hid
) {
1478 case HID_DG_INPUTMODE
:
1480 * Some elan panels wrongly declare 2 input mode features,
1481 * and silently ignore when we set the value in the second
1482 * field. Skip the second feature and hope for the best.
1484 if (*inputmode_found
)
1487 if (cls
->quirks
& MT_QUIRK_FORCE_GET_FEATURE
) {
1488 report_len
= hid_report_len(report
);
1489 buf
= hid_alloc_report_buf(report
, GFP_KERNEL
);
1492 "failed to allocate buffer for report\n");
1495 hid_hw_raw_request(hdev
, report
->id
, buf
, report_len
,
1497 HID_REQ_GET_REPORT
);
1501 field
->value
[index
] = td
->inputmode_value
;
1502 *inputmode_found
= true;
1505 case HID_DG_CONTACTMAX
:
1506 if (cls
->maxcontacts
) {
1507 max
= min_t(int, field
->logical_maximum
,
1509 if (field
->value
[index
] != max
) {
1510 field
->value
[index
] = max
;
1516 case HID_DG_LATENCYMODE
:
1517 field
->value
[index
] = latency
;
1520 case HID_DG_SURFACESWITCH
:
1521 field
->value
[index
] = surface_switch
;
1524 case HID_DG_BUTTONSWITCH
:
1525 field
->value
[index
] = button_switch
;
1529 return false; /* no need to update the report */
1532 static void mt_set_modes(struct hid_device
*hdev
, enum latency_mode latency
,
1533 bool surface_switch
, bool button_switch
)
1535 struct hid_report_enum
*rep_enum
;
1536 struct hid_report
*rep
;
1537 struct hid_usage
*usage
;
1540 bool inputmode_found
= false;
1542 rep_enum
= &hdev
->report_enum
[HID_FEATURE_REPORT
];
1543 list_for_each_entry(rep
, &rep_enum
->report_list
, list
) {
1544 update_report
= false;
1546 for (i
= 0; i
< rep
->maxfield
; i
++) {
1547 /* Ignore if report count is out of bounds. */
1548 if (rep
->field
[i
]->report_count
< 1)
1551 for (j
= 0; j
< rep
->field
[i
]->maxusage
; j
++) {
1552 usage
= &rep
->field
[i
]->usage
[j
];
1554 if (mt_need_to_apply_feature(hdev
,
1561 update_report
= true;
1566 hid_hw_request(hdev
, rep
, HID_REQ_SET_REPORT
);
1570 static void mt_post_parse_default_settings(struct mt_device
*td
,
1571 struct mt_application
*app
)
1573 __s32 quirks
= app
->quirks
;
1575 /* unknown serial device needs special quirks */
1576 if (list_is_singular(&app
->mt_usages
)) {
1577 quirks
|= MT_QUIRK_ALWAYS_VALID
;
1578 quirks
&= ~MT_QUIRK_NOT_SEEN_MEANS_UP
;
1579 quirks
&= ~MT_QUIRK_VALID_IS_INRANGE
;
1580 quirks
&= ~MT_QUIRK_VALID_IS_CONFIDENCE
;
1581 quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
1584 app
->quirks
= quirks
;
1587 static void mt_post_parse(struct mt_device
*td
, struct mt_application
*app
)
1589 if (!app
->have_contact_count
)
1590 app
->quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
1593 static int mt_input_configured(struct hid_device
*hdev
, struct hid_input
*hi
)
1595 struct mt_device
*td
= hid_get_drvdata(hdev
);
1596 const char *suffix
= NULL
;
1597 struct mt_report_data
*rdata
;
1598 struct mt_application
*mt_application
= NULL
;
1599 struct hid_report
*report
;
1602 list_for_each_entry(report
, &hi
->reports
, hidinput_list
) {
1603 rdata
= mt_find_report_data(td
, report
);
1605 hid_err(hdev
, "failed to allocate data for report\n");
1609 mt_application
= rdata
->application
;
1611 if (rdata
->is_mt_collection
) {
1612 ret
= mt_touch_input_configured(hdev
, hi
,
1619 switch (hi
->application
) {
1620 case HID_GD_KEYBOARD
:
1623 case HID_DG_TOUCHPAD
:
1624 case HID_GD_SYSTEM_CONTROL
:
1625 case HID_CP_CONSUMER_CONTROL
:
1626 case HID_GD_WIRELESS_RADIO_CTLS
:
1627 case HID_GD_SYSTEM_MULTIAXIS
:
1628 /* already handled by hid core */
1630 case HID_DG_TOUCHSCREEN
:
1631 /* we do not set suffix = "Touchscreen" */
1632 hi
->input
->name
= hdev
->name
;
1634 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS
:
1635 suffix
= "Custom Media Keys";
1638 /* force BTN_STYLUS to allow tablet matching in udev */
1639 __set_bit(BTN_STYLUS
, hi
->input
->keybit
);
1647 hi
->input
->name
= devm_kasprintf(&hdev
->dev
, GFP_KERNEL
,
1648 "%s %s", hdev
->name
, suffix
);
1653 static void mt_fix_const_field(struct hid_field
*field
, unsigned int usage
)
1655 if (field
->usage
[0].hid
!= usage
||
1656 !(field
->flags
& HID_MAIN_ITEM_CONSTANT
))
1659 field
->flags
&= ~HID_MAIN_ITEM_CONSTANT
;
1660 field
->flags
|= HID_MAIN_ITEM_VARIABLE
;
1663 static void mt_fix_const_fields(struct hid_device
*hdev
, unsigned int usage
)
1665 struct hid_report
*report
;
1668 list_for_each_entry(report
,
1669 &hdev
->report_enum
[HID_INPUT_REPORT
].report_list
,
1672 if (!report
->maxfield
)
1675 for (i
= 0; i
< report
->maxfield
; i
++)
1676 if (report
->field
[i
]->maxusage
>= 1)
1677 mt_fix_const_field(report
->field
[i
], usage
);
1681 static void mt_release_contacts(struct hid_device
*hid
)
1683 struct hid_input
*hidinput
;
1684 struct mt_application
*application
;
1685 struct mt_device
*td
= hid_get_drvdata(hid
);
1687 list_for_each_entry(hidinput
, &hid
->inputs
, list
) {
1688 struct input_dev
*input_dev
= hidinput
->input
;
1689 struct input_mt
*mt
= input_dev
->mt
;
1693 for (i
= 0; i
< mt
->num_slots
; i
++) {
1694 input_mt_slot(input_dev
, i
);
1695 input_mt_report_slot_inactive(input_dev
);
1697 input_mt_sync_frame(input_dev
);
1698 input_sync(input_dev
);
1702 list_for_each_entry(application
, &td
->applications
, list
) {
1703 application
->num_received
= 0;
1707 static void mt_expired_timeout(struct timer_list
*t
)
1709 struct mt_device
*td
= from_timer(td
, t
, release_timer
);
1710 struct hid_device
*hdev
= td
->hdev
;
1713 * An input report came in just before we release the sticky fingers,
1714 * it will take care of the sticky fingers.
1716 if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
))
1718 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
))
1719 mt_release_contacts(hdev
);
1720 clear_bit_unlock(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
);
1723 static int mt_probe(struct hid_device
*hdev
, const struct hid_device_id
*id
)
1726 struct mt_device
*td
;
1727 const struct mt_class
*mtclass
= mt_classes
; /* MT_CLS_DEFAULT */
1729 for (i
= 0; mt_classes
[i
].name
; i
++) {
1730 if (id
->driver_data
== mt_classes
[i
].name
) {
1731 mtclass
= &(mt_classes
[i
]);
1736 td
= devm_kzalloc(&hdev
->dev
, sizeof(struct mt_device
), GFP_KERNEL
);
1738 dev_err(&hdev
->dev
, "cannot allocate multitouch data\n");
1742 td
->mtclass
= *mtclass
;
1743 td
->inputmode_value
= MT_INPUTMODE_TOUCHSCREEN
;
1744 hid_set_drvdata(hdev
, td
);
1746 INIT_LIST_HEAD(&td
->applications
);
1747 INIT_LIST_HEAD(&td
->reports
);
1749 if (id
->vendor
== HID_ANY_ID
&& id
->product
== HID_ANY_ID
)
1750 td
->serial_maybe
= true;
1753 /* Orientation is inverted if the X or Y axes are
1754 * flipped, but normalized if both are inverted.
1756 if (hdev
->quirks
& (HID_QUIRK_X_INVERT
| HID_QUIRK_Y_INVERT
) &&
1757 !((hdev
->quirks
& HID_QUIRK_X_INVERT
)
1758 && (hdev
->quirks
& HID_QUIRK_Y_INVERT
)))
1759 td
->mtclass
.quirks
= MT_QUIRK_ORIENTATION_INVERT
;
1761 /* This allows the driver to correctly support devices
1762 * that emit events over several HID messages.
1764 hdev
->quirks
|= HID_QUIRK_NO_INPUT_SYNC
;
1767 * This allows the driver to handle different input sensors
1768 * that emits events through different applications on the same HID
1771 hdev
->quirks
|= HID_QUIRK_INPUT_PER_APP
;
1773 if (id
->group
!= HID_GROUP_MULTITOUCH_WIN_8
)
1774 hdev
->quirks
|= HID_QUIRK_MULTI_INPUT
;
1776 if (mtclass
->quirks
& MT_QUIRK_FORCE_MULTI_INPUT
) {
1777 hdev
->quirks
&= ~HID_QUIRK_INPUT_PER_APP
;
1778 hdev
->quirks
|= HID_QUIRK_MULTI_INPUT
;
1781 timer_setup(&td
->release_timer
, mt_expired_timeout
, 0);
1783 ret
= hid_parse(hdev
);
1787 if (mtclass
->quirks
& MT_QUIRK_FIX_CONST_CONTACT_ID
)
1788 mt_fix_const_fields(hdev
, HID_DG_CONTACTID
);
1790 ret
= hid_hw_start(hdev
, HID_CONNECT_DEFAULT
);
1794 ret
= sysfs_create_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
1796 dev_warn(&hdev
->dev
, "Cannot allocate sysfs group for %s\n",
1799 mt_set_modes(hdev
, HID_LATENCY_NORMAL
, true, true);
1804 static int mt_suspend(struct hid_device
*hdev
, pm_message_t state
)
1806 struct mt_device
*td
= hid_get_drvdata(hdev
);
1808 /* High latency is desirable for power savings during S3/S0ix */
1809 if ((td
->mtclass
.quirks
& MT_QUIRK_DISABLE_WAKEUP
) ||
1810 !hid_hw_may_wakeup(hdev
))
1811 mt_set_modes(hdev
, HID_LATENCY_HIGH
, false, false);
1813 mt_set_modes(hdev
, HID_LATENCY_HIGH
, true, true);
1818 static int mt_reset_resume(struct hid_device
*hdev
)
1820 mt_release_contacts(hdev
);
1821 mt_set_modes(hdev
, HID_LATENCY_NORMAL
, true, true);
1825 static int mt_resume(struct hid_device
*hdev
)
1827 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1828 * It should be safe to send it to other devices too.
1829 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1831 hid_hw_idle(hdev
, 0, 0, HID_REQ_SET_IDLE
);
1833 mt_set_modes(hdev
, HID_LATENCY_NORMAL
, true, true);
1838 static void mt_remove(struct hid_device
*hdev
)
1840 struct mt_device
*td
= hid_get_drvdata(hdev
);
1842 del_timer_sync(&td
->release_timer
);
1844 sysfs_remove_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
1849 * This list contains only:
1850 * - VID/PID of products not working with the default multitouch handling
1851 * - 2 generic rules.
1852 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1854 static const struct hid_device_id mt_devices
[] = {
1857 { .driver_data
= MT_CLS_3M
,
1858 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1859 USB_DEVICE_ID_3M1968
) },
1860 { .driver_data
= MT_CLS_3M
,
1861 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1862 USB_DEVICE_ID_3M2256
) },
1863 { .driver_data
= MT_CLS_3M
,
1864 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1865 USB_DEVICE_ID_3M3266
) },
1868 { .driver_data
= MT_CLS_EXPORT_ALL_INPUTS
,
1869 MT_USB_DEVICE(USB_VENDOR_ID_ANTON
,
1870 USB_DEVICE_ID_ANTON_TOUCH_PAD
) },
1873 { .driver_data
= MT_CLS_WIN_8_DISABLE_WAKEUP
,
1874 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1875 USB_VENDOR_ID_ASUSTEK
,
1876 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD
) },
1879 { .driver_data
= MT_CLS_ASUS
,
1880 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1881 USB_VENDOR_ID_ASUSTEK
,
1882 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD
) },
1885 { .driver_data
= MT_CLS_SERIAL
,
1886 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL
,
1887 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER
) },
1889 /* Baanto multitouch devices */
1890 { .driver_data
= MT_CLS_NSMU
,
1891 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO
,
1892 USB_DEVICE_ID_BAANTO_MT_190W2
) },
1895 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
1896 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1897 USB_DEVICE_ID_CANDO_MULTI_TOUCH
) },
1898 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
1899 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1900 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6
) },
1902 /* Chunghwa Telecom touch panels */
1903 { .driver_data
= MT_CLS_NSMU
,
1904 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT
,
1905 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH
) },
1907 /* CJTouch panels */
1908 { .driver_data
= MT_CLS_NSMU
,
1909 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH
,
1910 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020
) },
1911 { .driver_data
= MT_CLS_NSMU
,
1912 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH
,
1913 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040
) },
1915 /* CVTouch panels */
1916 { .driver_data
= MT_CLS_NSMU
,
1917 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH
,
1918 USB_DEVICE_ID_CVTOUCH_SCREEN
) },
1920 /* eGalax devices (SAW) */
1921 { .driver_data
= MT_CLS_EXPORT_ALL_INPUTS
,
1922 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1923 USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER
) },
1925 /* eGalax devices (resistive) */
1926 { .driver_data
= MT_CLS_EGALAX
,
1927 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1928 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D
) },
1929 { .driver_data
= MT_CLS_EGALAX
,
1930 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1931 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E
) },
1933 /* eGalax devices (capacitive) */
1934 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1935 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1936 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207
) },
1937 { .driver_data
= MT_CLS_EGALAX
,
1938 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1939 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C
) },
1940 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1941 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1942 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224
) },
1943 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1944 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1945 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A
) },
1946 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1947 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1948 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E
) },
1949 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1950 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1951 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262
) },
1952 { .driver_data
= MT_CLS_EGALAX
,
1953 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1954 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B
) },
1955 { .driver_data
= MT_CLS_EGALAX
,
1956 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1957 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1
) },
1958 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1959 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1960 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA
) },
1961 { .driver_data
= MT_CLS_EGALAX
,
1962 HID_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1963 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4
) },
1964 { .driver_data
= MT_CLS_EGALAX
,
1965 HID_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1966 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0
) },
1967 { .driver_data
= MT_CLS_EGALAX
,
1968 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1969 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA
) },
1970 { .driver_data
= MT_CLS_EGALAX
,
1971 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1972 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302
) },
1973 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1974 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1975 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349
) },
1976 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1977 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1978 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7
) },
1979 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1980 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1981 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001
) },
1982 { .driver_data
= MT_CLS_EGALAX
,
1983 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1984 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002
) },
1987 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
1988 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1989 USB_VENDOR_ID_ELAN
, 0x313a) },
1991 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
1992 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1993 USB_VENDOR_ID_ELAN
, 0x3148) },
1995 /* Elitegroup panel */
1996 { .driver_data
= MT_CLS_SERIAL
,
1997 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP
,
1998 USB_DEVICE_ID_ELITEGROUP_05D8
) },
2000 /* Flatfrog Panels */
2001 { .driver_data
= MT_CLS_FLATFROG
,
2002 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG
,
2003 USB_DEVICE_ID_MULTITOUCH_3200
) },
2005 /* FocalTech Panels */
2006 { .driver_data
= MT_CLS_SERIAL
,
2007 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL
,
2008 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH
) },
2010 /* GeneralTouch panel */
2011 { .driver_data
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
2012 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2013 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS
) },
2014 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
2015 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2016 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS
) },
2017 { .driver_data
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
2018 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2019 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101
) },
2020 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
2021 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2022 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102
) },
2023 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
2024 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2025 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106
) },
2026 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
2027 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2028 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A
) },
2029 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
2030 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
2031 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100
) },
2033 /* Gametel game controller */
2034 { .driver_data
= MT_CLS_NSMU
,
2035 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL
,
2036 USB_DEVICE_ID_GAMETEL_MT_MODE
) },
2038 /* GoodTouch panels */
2039 { .driver_data
= MT_CLS_NSMU
,
2040 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH
,
2041 USB_DEVICE_ID_GOODTOUCH_000f
) },
2044 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
2045 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT
,
2046 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH
) },
2048 /* HONOR GLO-GXXX panel */
2049 { .driver_data
= MT_CLS_VTL
,
2050 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2053 /* Ilitek dual touch panel */
2054 { .driver_data
= MT_CLS_NSMU
,
2055 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK
,
2056 USB_DEVICE_ID_ILITEK_MULTITOUCH
) },
2058 /* LG Melfas panel */
2059 { .driver_data
= MT_CLS_LG
,
2060 HID_USB_DEVICE(USB_VENDOR_ID_LG
,
2061 USB_DEVICE_ID_LG_MELFAS_MT
) },
2062 { .driver_data
= MT_CLS_LG
,
2063 HID_DEVICE(BUS_I2C
, HID_GROUP_GENERIC
,
2064 USB_VENDOR_ID_LG
, I2C_DEVICE_ID_LG_7010
) },
2066 /* Lenovo X1 TAB Gen 2 */
2067 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2068 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
2069 USB_VENDOR_ID_LENOVO
,
2070 USB_DEVICE_ID_LENOVO_X1_TAB
) },
2072 /* Lenovo X1 TAB Gen 3 */
2073 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2074 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
2075 USB_VENDOR_ID_LENOVO
,
2076 USB_DEVICE_ID_LENOVO_X1_TAB3
) },
2078 /* Lenovo X12 TAB Gen 1 */
2079 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU
,
2080 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
2081 USB_VENDOR_ID_LENOVO
,
2082 USB_DEVICE_ID_LENOVO_X12_TAB
) },
2085 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
2086 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
2087 USB_DEVICE_ID_ASUS_T91MT
)},
2088 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
2089 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
2090 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO
) },
2091 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
2092 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX
,
2093 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART
) },
2096 { .driver_data
= MT_CLS_NSMU
,
2097 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK
,
2098 USB_DEVICE_ID_NOVATEK_PCT
) },
2101 { .driver_data
= MT_CLS_NSMU
,
2102 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2103 USB_VENDOR_ID_NTRIG
, 0x1b05) },
2105 /* Panasonic panels */
2106 { .driver_data
= MT_CLS_PANASONIC
,
2107 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
2108 USB_DEVICE_ID_PANABOARD_UBT780
) },
2109 { .driver_data
= MT_CLS_PANASONIC
,
2110 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
2111 USB_DEVICE_ID_PANABOARD_UBT880
) },
2113 /* PixArt optical touch screen */
2114 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
2115 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
2116 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN
) },
2117 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
2118 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
2119 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1
) },
2120 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
2121 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
2122 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2
) },
2124 /* PixCir-based panels */
2125 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
2126 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
2127 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH
) },
2129 /* Quanta-based panels */
2130 { .driver_data
= MT_CLS_CONFIDENCE_CONTACT_ID
,
2131 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA
,
2132 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001
) },
2134 /* Razer touchpads */
2135 { .driver_data
= MT_CLS_RAZER_BLADE_STEALTH
,
2136 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2137 USB_VENDOR_ID_SYNAPTICS
, 0x8323) },
2139 /* Smart Tech panels */
2140 { .driver_data
= MT_CLS_SMART_TECH
,
2141 MT_USB_DEVICE(0x0b8c, 0x0092)},
2143 /* Stantum panels */
2144 { .driver_data
= MT_CLS_CONFIDENCE
,
2145 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM
,
2146 USB_DEVICE_ID_MTP_STM
)},
2148 /* Synaptics devices */
2149 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2150 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2151 USB_VENDOR_ID_SYNAPTICS
, 0xcd7e) },
2153 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2154 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2155 USB_VENDOR_ID_SYNAPTICS
, 0xcddc) },
2157 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2158 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2159 USB_VENDOR_ID_SYNAPTICS
, 0xce08) },
2161 { .driver_data
= MT_CLS_WIN_8_FORCE_MULTI_INPUT
,
2162 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
2163 USB_VENDOR_ID_SYNAPTICS
, 0xce09) },
2165 /* TopSeed panels */
2166 { .driver_data
= MT_CLS_TOPSEED
,
2167 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2
,
2168 USB_DEVICE_ID_TOPSEED2_PERIPAD_701
) },
2170 /* Touch International panels */
2171 { .driver_data
= MT_CLS_NSMU
,
2172 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL
,
2173 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH
) },
2176 { .driver_data
= MT_CLS_NSMU
,
2177 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
2178 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709
) },
2179 { .driver_data
= MT_CLS_NSMU
,
2180 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
2181 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19
) },
2184 { .driver_data
= MT_CLS_VTL
,
2185 MT_USB_DEVICE(USB_VENDOR_ID_VTL
,
2186 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F
) },
2188 /* Winbond Electronics Corp. */
2189 { .driver_data
= MT_CLS_WIN_8_NO_STICKY_FINGERS
,
2190 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH_WIN_8
,
2191 USB_VENDOR_ID_WINBOND
, USB_DEVICE_ID_TSTP_MTOUCH
) },
2193 /* Wistron panels */
2194 { .driver_data
= MT_CLS_NSMU
,
2195 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON
,
2196 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH
) },
2199 { .driver_data
= MT_CLS_NSMU
,
2200 MT_USB_DEVICE(USB_VENDOR_ID_XAT
,
2201 USB_DEVICE_ID_XAT_CSR
) },
2204 { .driver_data
= MT_CLS_NSMU
,
2205 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2206 USB_DEVICE_ID_XIROKU_SPX
) },
2207 { .driver_data
= MT_CLS_NSMU
,
2208 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2209 USB_DEVICE_ID_XIROKU_MPX
) },
2210 { .driver_data
= MT_CLS_NSMU
,
2211 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2212 USB_DEVICE_ID_XIROKU_CSR
) },
2213 { .driver_data
= MT_CLS_NSMU
,
2214 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2215 USB_DEVICE_ID_XIROKU_SPX1
) },
2216 { .driver_data
= MT_CLS_NSMU
,
2217 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2218 USB_DEVICE_ID_XIROKU_MPX1
) },
2219 { .driver_data
= MT_CLS_NSMU
,
2220 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2221 USB_DEVICE_ID_XIROKU_CSR1
) },
2222 { .driver_data
= MT_CLS_NSMU
,
2223 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2224 USB_DEVICE_ID_XIROKU_SPX2
) },
2225 { .driver_data
= MT_CLS_NSMU
,
2226 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2227 USB_DEVICE_ID_XIROKU_MPX2
) },
2228 { .driver_data
= MT_CLS_NSMU
,
2229 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
2230 USB_DEVICE_ID_XIROKU_CSR2
) },
2232 /* Google MT devices */
2233 { .driver_data
= MT_CLS_GOOGLE
,
2234 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_ANY
, USB_VENDOR_ID_GOOGLE
,
2235 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE
) },
2236 { .driver_data
= MT_CLS_GOOGLE
,
2237 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
, USB_VENDOR_ID_GOOGLE
,
2238 USB_DEVICE_ID_GOOGLE_WHISKERS
) },
2240 /* Generic MT device */
2241 { HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH
, HID_ANY_ID
, HID_ANY_ID
) },
2243 /* Generic Win 8 certified MT device */
2244 { .driver_data
= MT_CLS_WIN_8
,
2245 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH_WIN_8
,
2246 HID_ANY_ID
, HID_ANY_ID
) },
2249 MODULE_DEVICE_TABLE(hid
, mt_devices
);
2251 static const struct hid_usage_id mt_grabbed_usages
[] = {
2252 { HID_ANY_ID
, HID_ANY_ID
, HID_ANY_ID
},
2253 { HID_ANY_ID
- 1, HID_ANY_ID
- 1, HID_ANY_ID
- 1}
2256 static struct hid_driver mt_driver
= {
2257 .name
= "hid-multitouch",
2258 .id_table
= mt_devices
,
2260 .remove
= mt_remove
,
2261 .input_mapping
= mt_input_mapping
,
2262 .input_mapped
= mt_input_mapped
,
2263 .input_configured
= mt_input_configured
,
2264 .feature_mapping
= mt_feature_mapping
,
2265 .usage_table
= mt_grabbed_usages
,
2267 .report
= mt_report
,
2268 .suspend
= pm_ptr(mt_suspend
),
2269 .reset_resume
= pm_ptr(mt_reset_resume
),
2270 .resume
= pm_ptr(mt_resume
),
2272 module_hid_driver(mt_driver
);