2 * HID driver for multitouch panels
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
9 * This code is partly based on hid-egalax.c:
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
15 * This code is partly based on hid-3m-pct.c:
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
41 #include <linux/device.h>
42 #include <linux/hid.h>
43 #include <linux/module.h>
44 #include <linux/slab.h>
45 #include <linux/input/mt.h>
46 #include <linux/jiffies.h>
47 #include <linux/string.h>
48 #include <linux/timer.h>
51 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
52 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
53 MODULE_DESCRIPTION("HID multitouch panels");
54 MODULE_LICENSE("GPL");
58 /* quirks to control the device */
59 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
60 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
61 #define MT_QUIRK_CYPRESS BIT(2)
62 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
63 #define MT_QUIRK_ALWAYS_VALID BIT(4)
64 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
65 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
66 #define MT_QUIRK_CONFIDENCE BIT(7)
67 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
68 #define MT_QUIRK_NO_AREA BIT(9)
69 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
70 #define MT_QUIRK_HOVERING BIT(11)
71 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
72 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
73 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
74 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
75 #define MT_QUIRK_STICKY_FINGERS BIT(16)
76 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
78 #define MT_INPUTMODE_TOUCHSCREEN 0x02
79 #define MT_INPUTMODE_TOUCHPAD 0x03
81 #define MT_BUTTONTYPE_CLICKPAD 0
83 #define MT_IO_FLAGS_RUNNING 0
84 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
85 #define MT_IO_FLAGS_PENDING_SLOTS 2
88 __s32 x
, y
, cx
, cy
, p
, w
, h
;
89 __s32 contactid
; /* the device ContactID assigned to this slot */
90 bool touch_state
; /* is the touch valid? */
91 bool inrange_state
; /* is the finger in proximity of the sensor? */
92 bool confidence_state
; /* is the touch made by a finger? */
96 __s32 name
; /* MT_CLS */
98 __s32 sn_move
; /* Signal/noise ratio for move events */
99 __s32 sn_width
; /* Signal/noise ratio for width events */
100 __s32 sn_height
; /* Signal/noise ratio for height events */
101 __s32 sn_pressure
; /* Signal/noise ratio for pressure events */
103 bool is_indirect
; /* true for touchpads */
104 bool export_all_inputs
; /* do not ignore mouse, keyboards, etc... */
108 unsigned usages
[HID_MAX_FIELDS
];
113 struct mt_slot curdata
; /* placeholder of incoming data */
114 struct mt_class mtclass
; /* our mt device class */
115 struct timer_list release_timer
; /* to release sticky fingers */
116 struct hid_device
*hdev
; /* hid_device we're attached to */
117 struct mt_fields
*fields
; /* temporary placeholder for storing the
119 unsigned long mt_io_flags
; /* mt flags (MT_IO_FLAGS_*) */
120 int cc_index
; /* contact count field index in the report */
121 int cc_value_index
; /* contact count value index in the field */
122 unsigned last_slot_field
; /* the last field of a slot */
123 unsigned mt_report_id
; /* the report ID of the multitouch device */
124 unsigned long initial_quirks
; /* initial quirks state */
125 __s16 inputmode
; /* InputMode HID feature, -1 if non-existent */
126 __s16 inputmode_index
; /* InputMode HID feature index in the report */
127 __s16 maxcontact_report_id
; /* Maximum Contact Number HID feature,
128 -1 if non-existent */
129 __u8 inputmode_value
; /* InputMode HID feature value */
130 __u8 num_received
; /* how many contacts we received */
131 __u8 num_expected
; /* expected last contact index */
133 __u8 touches_by_report
; /* how many touches are present in one report:
134 * 1 means we should use a serial protocol
135 * > 1 means hybrid (multitouch) protocol */
136 __u8 buttons_count
; /* number of physical buttons per touchpad */
137 bool is_buttonpad
; /* is this device a button pad? */
138 bool serial_maybe
; /* need to check for serial protocol */
139 bool curvalid
; /* is the current contact valid? */
140 unsigned mt_flags
; /* flags to pass to input-mt */
141 __s32 dev_time
; /* the scan time provided by the device */
142 unsigned long jiffies
; /* the frame's jiffies */
143 int timestamp
; /* the timestamp to be sent */
146 static void mt_post_parse_default_settings(struct mt_device
*td
);
147 static void mt_post_parse(struct mt_device
*td
);
149 /* classes of device behavior */
150 #define MT_CLS_DEFAULT 0x0001
152 #define MT_CLS_SERIAL 0x0002
153 #define MT_CLS_CONFIDENCE 0x0003
154 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
155 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
156 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
157 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
158 /* reserved 0x0008 */
159 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
160 #define MT_CLS_NSMU 0x000a
161 /* reserved 0x0010 */
162 /* reserved 0x0011 */
163 #define MT_CLS_WIN_8 0x0012
164 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
165 #define MT_CLS_WIN_8_DUAL 0x0014
167 /* vendor specific classes */
168 #define MT_CLS_3M 0x0101
169 /* reserved 0x0102 */
170 #define MT_CLS_EGALAX 0x0103
171 #define MT_CLS_EGALAX_SERIAL 0x0104
172 #define MT_CLS_TOPSEED 0x0105
173 #define MT_CLS_PANASONIC 0x0106
174 #define MT_CLS_FLATFROG 0x0107
175 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
176 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
177 #define MT_CLS_LG 0x010a
178 #define MT_CLS_ASUS 0x010b
179 #define MT_CLS_VTL 0x0110
180 #define MT_CLS_GOOGLE 0x0111
182 #define MT_DEFAULT_MAXCONTACT 10
183 #define MT_MAX_MAXCONTACT 250
186 * Resync device and local timestamps after that many microseconds without
189 #define MAX_TIMESTAMP_INTERVAL 1000000
191 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
192 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
195 * these device-dependent functions determine what slot corresponds
196 * to a valid contact that was just read.
199 static int cypress_compute_slot(struct mt_device
*td
)
201 if (td
->curdata
.contactid
!= 0 || td
->num_received
== 0)
202 return td
->curdata
.contactid
;
207 static struct mt_class mt_classes
[] = {
208 { .name
= MT_CLS_DEFAULT
,
209 .quirks
= MT_QUIRK_ALWAYS_VALID
|
210 MT_QUIRK_CONTACT_CNT_ACCURATE
},
211 { .name
= MT_CLS_NSMU
,
212 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
},
213 { .name
= MT_CLS_SERIAL
,
214 .quirks
= MT_QUIRK_ALWAYS_VALID
},
215 { .name
= MT_CLS_CONFIDENCE
,
216 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
},
217 { .name
= MT_CLS_CONFIDENCE_CONTACT_ID
,
218 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
219 MT_QUIRK_SLOT_IS_CONTACTID
},
220 { .name
= MT_CLS_CONFIDENCE_MINUS_ONE
,
221 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
222 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
},
223 { .name
= MT_CLS_DUAL_INRANGE_CONTACTID
,
224 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
225 MT_QUIRK_SLOT_IS_CONTACTID
,
227 { .name
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
228 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
229 MT_QUIRK_SLOT_IS_CONTACTNUMBER
,
231 { .name
= MT_CLS_INRANGE_CONTACTNUMBER
,
232 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
233 MT_QUIRK_SLOT_IS_CONTACTNUMBER
},
234 { .name
= MT_CLS_WIN_8
,
235 .quirks
= MT_QUIRK_ALWAYS_VALID
|
236 MT_QUIRK_IGNORE_DUPLICATES
|
238 MT_QUIRK_CONTACT_CNT_ACCURATE
|
239 MT_QUIRK_STICKY_FINGERS
},
240 { .name
= MT_CLS_EXPORT_ALL_INPUTS
,
241 .quirks
= MT_QUIRK_ALWAYS_VALID
|
242 MT_QUIRK_CONTACT_CNT_ACCURATE
,
243 .export_all_inputs
= true },
244 { .name
= MT_CLS_WIN_8_DUAL
,
245 .quirks
= MT_QUIRK_ALWAYS_VALID
|
246 MT_QUIRK_IGNORE_DUPLICATES
|
248 MT_QUIRK_CONTACT_CNT_ACCURATE
,
249 .export_all_inputs
= true },
252 * vendor specific classes
255 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
256 MT_QUIRK_SLOT_IS_CONTACTID
|
257 MT_QUIRK_TOUCH_SIZE_SCALING
,
263 { .name
= MT_CLS_EGALAX
,
264 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
265 MT_QUIRK_VALID_IS_INRANGE
,
269 { .name
= MT_CLS_EGALAX_SERIAL
,
270 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
271 MT_QUIRK_ALWAYS_VALID
,
275 { .name
= MT_CLS_TOPSEED
,
276 .quirks
= MT_QUIRK_ALWAYS_VALID
,
280 { .name
= MT_CLS_PANASONIC
,
281 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
,
283 { .name
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
284 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
285 MT_QUIRK_VALID_IS_INRANGE
|
286 MT_QUIRK_SLOT_IS_CONTACTID
,
289 { .name
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
290 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
291 MT_QUIRK_SLOT_IS_CONTACTID
294 { .name
= MT_CLS_FLATFROG
,
295 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
301 .quirks
= MT_QUIRK_ALWAYS_VALID
|
302 MT_QUIRK_FIX_CONST_CONTACT_ID
|
303 MT_QUIRK_IGNORE_DUPLICATES
|
305 MT_QUIRK_CONTACT_CNT_ACCURATE
},
306 { .name
= MT_CLS_ASUS
,
307 .quirks
= MT_QUIRK_ALWAYS_VALID
|
308 MT_QUIRK_CONTACT_CNT_ACCURATE
|
309 MT_QUIRK_ASUS_CUSTOM_UP
},
310 { .name
= MT_CLS_VTL
,
311 .quirks
= MT_QUIRK_ALWAYS_VALID
|
312 MT_QUIRK_CONTACT_CNT_ACCURATE
|
313 MT_QUIRK_FORCE_GET_FEATURE
,
315 { .name
= MT_CLS_GOOGLE
,
316 .quirks
= MT_QUIRK_ALWAYS_VALID
|
317 MT_QUIRK_CONTACT_CNT_ACCURATE
|
318 MT_QUIRK_SLOT_IS_CONTACTID
|
324 static ssize_t
mt_show_quirks(struct device
*dev
,
325 struct device_attribute
*attr
,
328 struct hid_device
*hdev
= to_hid_device(dev
);
329 struct mt_device
*td
= hid_get_drvdata(hdev
);
331 return sprintf(buf
, "%u\n", td
->mtclass
.quirks
);
334 static ssize_t
mt_set_quirks(struct device
*dev
,
335 struct device_attribute
*attr
,
336 const char *buf
, size_t count
)
338 struct hid_device
*hdev
= to_hid_device(dev
);
339 struct mt_device
*td
= hid_get_drvdata(hdev
);
343 if (kstrtoul(buf
, 0, &val
))
346 td
->mtclass
.quirks
= val
;
348 if (td
->cc_index
< 0)
349 td
->mtclass
.quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
354 static DEVICE_ATTR(quirks
, S_IWUSR
| S_IRUGO
, mt_show_quirks
, mt_set_quirks
);
356 static struct attribute
*sysfs_attrs
[] = {
357 &dev_attr_quirks
.attr
,
361 static const struct attribute_group mt_attribute_group
= {
365 static void mt_get_feature(struct hid_device
*hdev
, struct hid_report
*report
)
367 struct mt_device
*td
= hid_get_drvdata(hdev
);
369 u32 size
= hid_report_len(report
);
373 * Do not fetch the feature report if the device has been explicitly
374 * marked as non-capable.
376 if (td
->initial_quirks
& HID_QUIRK_NO_INIT_REPORTS
)
379 buf
= hid_alloc_report_buf(report
, GFP_KERNEL
);
383 ret
= hid_hw_raw_request(hdev
, report
->id
, buf
, size
,
384 HID_FEATURE_REPORT
, HID_REQ_GET_REPORT
);
386 dev_warn(&hdev
->dev
, "failed to fetch feature %d\n",
389 ret
= hid_report_raw_event(hdev
, HID_FEATURE_REPORT
, buf
,
392 dev_warn(&hdev
->dev
, "failed to report feature\n");
398 static void mt_feature_mapping(struct hid_device
*hdev
,
399 struct hid_field
*field
, struct hid_usage
*usage
)
401 struct mt_device
*td
= hid_get_drvdata(hdev
);
403 switch (usage
->hid
) {
404 case HID_DG_INPUTMODE
:
405 /* Ignore if value index is out of bounds. */
406 if (usage
->usage_index
>= field
->report_count
) {
407 dev_err(&hdev
->dev
, "HID_DG_INPUTMODE out of range\n");
411 if (td
->inputmode
< 0) {
412 td
->inputmode
= field
->report
->id
;
413 td
->inputmode_index
= usage
->usage_index
;
416 * Some elan panels wrongly declare 2 input mode
417 * features, and silently ignore when we set the
418 * value in the second field. Skip the second feature
419 * and hope for the best.
422 "Ignoring the extra HID_DG_INPUTMODE\n");
426 case HID_DG_CONTACTMAX
:
427 mt_get_feature(hdev
, field
->report
);
429 td
->maxcontact_report_id
= field
->report
->id
;
430 td
->maxcontacts
= field
->value
[0];
431 if (!td
->maxcontacts
&&
432 field
->logical_maximum
<= MT_MAX_MAXCONTACT
)
433 td
->maxcontacts
= field
->logical_maximum
;
434 if (td
->mtclass
.maxcontacts
)
435 /* check if the maxcontacts is given by the class */
436 td
->maxcontacts
= td
->mtclass
.maxcontacts
;
439 case HID_DG_BUTTONTYPE
:
440 if (usage
->usage_index
>= field
->report_count
) {
441 dev_err(&hdev
->dev
, "HID_DG_BUTTONTYPE out of range\n");
445 mt_get_feature(hdev
, field
->report
);
446 if (field
->value
[usage
->usage_index
] == MT_BUTTONTYPE_CLICKPAD
)
447 td
->is_buttonpad
= true;
451 /* Retrieve the Win8 blob once to enable some devices */
452 if (usage
->usage_index
== 0)
453 mt_get_feature(hdev
, field
->report
);
458 static void set_abs(struct input_dev
*input
, unsigned int code
,
459 struct hid_field
*field
, int snratio
)
461 int fmin
= field
->logical_minimum
;
462 int fmax
= field
->logical_maximum
;
463 int fuzz
= snratio
? (fmax
- fmin
) / snratio
: 0;
464 input_set_abs_params(input
, code
, fmin
, fmax
, fuzz
, 0);
465 input_abs_set_res(input
, code
, hidinput_calc_abs_res(field
, code
));
468 static void mt_store_field(struct hid_usage
*usage
, struct mt_device
*td
,
469 struct hid_input
*hi
)
471 struct mt_fields
*f
= td
->fields
;
473 if (f
->length
>= HID_MAX_FIELDS
)
476 f
->usages
[f
->length
++] = usage
->hid
;
479 static int mt_touch_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
480 struct hid_field
*field
, struct hid_usage
*usage
,
481 unsigned long **bit
, int *max
)
483 struct mt_device
*td
= hid_get_drvdata(hdev
);
484 struct mt_class
*cls
= &td
->mtclass
;
486 struct hid_usage
*prev_usage
= NULL
;
488 if (field
->application
== HID_DG_TOUCHSCREEN
)
489 td
->mt_flags
|= INPUT_MT_DIRECT
;
492 * Model touchscreens providing buttons as touchpads.
494 if (field
->application
== HID_DG_TOUCHPAD
||
495 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
) {
496 td
->mt_flags
|= INPUT_MT_POINTER
;
497 td
->inputmode_value
= MT_INPUTMODE_TOUCHPAD
;
500 /* count the buttons on touchpads */
501 if ((usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
)
504 if (usage
->usage_index
)
505 prev_usage
= &field
->usage
[usage
->usage_index
- 1];
507 switch (usage
->hid
& HID_USAGE_PAGE
) {
510 switch (usage
->hid
) {
512 if (prev_usage
&& (prev_usage
->hid
== usage
->hid
)) {
513 hid_map_usage(hi
, usage
, bit
, max
,
514 EV_ABS
, ABS_MT_TOOL_X
);
515 set_abs(hi
->input
, ABS_MT_TOOL_X
, field
,
518 hid_map_usage(hi
, usage
, bit
, max
,
519 EV_ABS
, ABS_MT_POSITION_X
);
520 set_abs(hi
->input
, ABS_MT_POSITION_X
, field
,
524 mt_store_field(usage
, td
, hi
);
527 if (prev_usage
&& (prev_usage
->hid
== usage
->hid
)) {
528 hid_map_usage(hi
, usage
, bit
, max
,
529 EV_ABS
, ABS_MT_TOOL_Y
);
530 set_abs(hi
->input
, ABS_MT_TOOL_Y
, field
,
533 hid_map_usage(hi
, usage
, bit
, max
,
534 EV_ABS
, ABS_MT_POSITION_Y
);
535 set_abs(hi
->input
, ABS_MT_POSITION_Y
, field
,
539 mt_store_field(usage
, td
, hi
);
544 case HID_UP_DIGITIZER
:
545 switch (usage
->hid
) {
547 if (cls
->quirks
& MT_QUIRK_HOVERING
) {
548 hid_map_usage(hi
, usage
, bit
, max
,
549 EV_ABS
, ABS_MT_DISTANCE
);
550 input_set_abs_params(hi
->input
,
551 ABS_MT_DISTANCE
, 0, 1, 0, 0);
553 mt_store_field(usage
, td
, hi
);
555 case HID_DG_CONFIDENCE
:
556 if ((cls
->name
== MT_CLS_WIN_8
||
557 cls
->name
== MT_CLS_WIN_8_DUAL
) &&
558 field
->application
== HID_DG_TOUCHPAD
)
559 cls
->quirks
|= MT_QUIRK_CONFIDENCE
;
560 mt_store_field(usage
, td
, hi
);
562 case HID_DG_TIPSWITCH
:
563 hid_map_usage(hi
, usage
, bit
, max
, EV_KEY
, BTN_TOUCH
);
564 input_set_capability(hi
->input
, EV_KEY
, BTN_TOUCH
);
565 mt_store_field(usage
, td
, hi
);
567 case HID_DG_CONTACTID
:
568 mt_store_field(usage
, td
, hi
);
569 td
->touches_by_report
++;
570 td
->mt_report_id
= field
->report
->id
;
573 hid_map_usage(hi
, usage
, bit
, max
,
574 EV_ABS
, ABS_MT_TOUCH_MAJOR
);
575 if (!(cls
->quirks
& MT_QUIRK_NO_AREA
))
576 set_abs(hi
->input
, ABS_MT_TOUCH_MAJOR
, field
,
578 mt_store_field(usage
, td
, hi
);
581 hid_map_usage(hi
, usage
, bit
, max
,
582 EV_ABS
, ABS_MT_TOUCH_MINOR
);
583 if (!(cls
->quirks
& MT_QUIRK_NO_AREA
)) {
584 set_abs(hi
->input
, ABS_MT_TOUCH_MINOR
, field
,
586 input_set_abs_params(hi
->input
,
587 ABS_MT_ORIENTATION
, 0, 1, 0, 0);
589 mt_store_field(usage
, td
, hi
);
591 case HID_DG_TIPPRESSURE
:
592 hid_map_usage(hi
, usage
, bit
, max
,
593 EV_ABS
, ABS_MT_PRESSURE
);
594 set_abs(hi
->input
, ABS_MT_PRESSURE
, field
,
596 mt_store_field(usage
, td
, hi
);
598 case HID_DG_SCANTIME
:
599 hid_map_usage(hi
, usage
, bit
, max
,
600 EV_MSC
, MSC_TIMESTAMP
);
601 input_set_capability(hi
->input
, EV_MSC
, MSC_TIMESTAMP
);
602 mt_store_field(usage
, td
, hi
);
604 case HID_DG_CONTACTCOUNT
:
605 /* Ignore if indexes are out of bounds. */
606 if (field
->index
>= field
->report
->maxfield
||
607 usage
->usage_index
>= field
->report_count
)
609 td
->cc_index
= field
->index
;
610 td
->cc_value_index
= usage
->usage_index
;
612 case HID_DG_CONTACTMAX
:
613 /* we don't set td->last_slot_field as contactcount and
614 * contact max are global to the report */
617 /* Legacy devices use TIPSWITCH and not TOUCH.
618 * Let's just ignore this field. */
621 /* let hid-input decide for the others */
625 code
= BTN_MOUSE
+ ((usage
->hid
- 1) & HID_USAGE
);
627 * MS PTP spec says that external buttons left and right have
630 if ((cls
->name
== MT_CLS_WIN_8
||
631 cls
->name
== MT_CLS_WIN_8_DUAL
) &&
632 field
->application
== HID_DG_TOUCHPAD
&&
633 (usage
->hid
& HID_USAGE
) > 1)
635 hid_map_usage(hi
, usage
, bit
, max
, EV_KEY
, code
);
636 input_set_capability(hi
->input
, EV_KEY
, code
);
640 /* we do not want to map these: no input-oriented meaning */
647 static int mt_compute_slot(struct mt_device
*td
, struct input_dev
*input
)
649 __s32 quirks
= td
->mtclass
.quirks
;
651 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID
)
652 return td
->curdata
.contactid
;
654 if (quirks
& MT_QUIRK_CYPRESS
)
655 return cypress_compute_slot(td
);
657 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTNUMBER
)
658 return td
->num_received
;
660 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
)
661 return td
->curdata
.contactid
- 1;
663 return input_mt_get_slot_by_key(input
, td
->curdata
.contactid
);
667 * this function is called when a whole contact has been processed,
668 * so that it can assign it to a slot and store the data there
670 static void mt_complete_slot(struct mt_device
*td
, struct input_dev
*input
)
672 if ((td
->mtclass
.quirks
& MT_QUIRK_CONTACT_CNT_ACCURATE
) &&
673 td
->num_received
>= td
->num_expected
)
676 if (td
->curvalid
|| (td
->mtclass
.quirks
& MT_QUIRK_ALWAYS_VALID
)) {
678 int slotnum
= mt_compute_slot(td
, input
);
679 struct mt_slot
*s
= &td
->curdata
;
680 struct input_mt
*mt
= input
->mt
;
682 if (slotnum
< 0 || slotnum
>= td
->maxcontacts
)
685 if ((td
->mtclass
.quirks
& MT_QUIRK_IGNORE_DUPLICATES
) && mt
) {
686 struct input_mt_slot
*slot
= &mt
->slots
[slotnum
];
687 if (input_mt_is_active(slot
) &&
688 input_mt_is_used(mt
, slot
))
692 if (!(td
->mtclass
.quirks
& MT_QUIRK_CONFIDENCE
))
693 s
->confidence_state
= 1;
694 active
= (s
->touch_state
|| s
->inrange_state
) &&
697 input_mt_slot(input
, slotnum
);
698 input_mt_report_slot_state(input
, MT_TOOL_FINGER
, active
);
700 /* this finger is in proximity of the sensor */
701 int wide
= (s
->w
> s
->h
);
702 int major
= max(s
->w
, s
->h
);
703 int minor
= min(s
->w
, s
->h
);
706 * divided by two to match visual scale of touch
707 * for devices with this quirk
709 if (td
->mtclass
.quirks
& MT_QUIRK_TOUCH_SIZE_SCALING
) {
714 input_event(input
, EV_ABS
, ABS_MT_POSITION_X
, s
->x
);
715 input_event(input
, EV_ABS
, ABS_MT_POSITION_Y
, s
->y
);
716 input_event(input
, EV_ABS
, ABS_MT_TOOL_X
, s
->cx
);
717 input_event(input
, EV_ABS
, ABS_MT_TOOL_Y
, s
->cy
);
718 input_event(input
, EV_ABS
, ABS_MT_DISTANCE
,
720 input_event(input
, EV_ABS
, ABS_MT_ORIENTATION
, wide
);
721 input_event(input
, EV_ABS
, ABS_MT_PRESSURE
, s
->p
);
722 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MAJOR
, major
);
723 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MINOR
, minor
);
725 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
);
733 * this function is called when a whole packet has been received and processed,
734 * so that it can decide what to send to the input layer.
736 static void mt_sync_frame(struct mt_device
*td
, struct input_dev
*input
)
738 input_mt_sync_frame(input
);
739 input_event(input
, EV_MSC
, MSC_TIMESTAMP
, td
->timestamp
);
741 td
->num_received
= 0;
742 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
))
743 set_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
);
745 clear_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
);
746 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS
, &td
->mt_io_flags
);
749 static int mt_compute_timestamp(struct mt_device
*td
, struct hid_field
*field
,
752 long delta
= value
- td
->dev_time
;
753 unsigned long jdelta
= jiffies_to_usecs(jiffies
- td
->jiffies
);
755 td
->jiffies
= jiffies
;
756 td
->dev_time
= value
;
759 delta
+= field
->logical_maximum
;
761 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
764 if (jdelta
> MAX_TIMESTAMP_INTERVAL
)
765 /* No data received for a while, resync the timestamp. */
768 return td
->timestamp
+ delta
;
771 static int mt_touch_event(struct hid_device
*hid
, struct hid_field
*field
,
772 struct hid_usage
*usage
, __s32 value
)
774 /* we will handle the hidinput part later, now remains hiddev */
775 if (hid
->claimed
& HID_CLAIMED_HIDDEV
&& hid
->hiddev_hid_event
)
776 hid
->hiddev_hid_event(hid
, field
, usage
, value
);
781 static void mt_process_mt_event(struct hid_device
*hid
, struct hid_field
*field
,
782 struct hid_usage
*usage
, __s32 value
,
785 struct mt_device
*td
= hid_get_drvdata(hid
);
786 __s32 cls
= td
->mtclass
.name
;
787 __s32 quirks
= td
->mtclass
.quirks
;
788 struct input_dev
*input
= field
->hidinput
->input
;
790 if (hid
->claimed
& HID_CLAIMED_INPUT
) {
791 switch (usage
->hid
) {
793 if (quirks
& MT_QUIRK_VALID_IS_INRANGE
)
794 td
->curvalid
= value
;
795 if (quirks
& MT_QUIRK_HOVERING
)
796 td
->curdata
.inrange_state
= value
;
798 case HID_DG_TIPSWITCH
:
799 if (quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
800 td
->curvalid
= value
;
801 td
->curdata
.touch_state
= value
;
803 case HID_DG_CONFIDENCE
:
804 if (quirks
& MT_QUIRK_CONFIDENCE
)
805 td
->curdata
.confidence_state
= value
;
806 if (quirks
& MT_QUIRK_VALID_IS_CONFIDENCE
)
807 td
->curvalid
= value
;
809 case HID_DG_CONTACTID
:
810 td
->curdata
.contactid
= value
;
812 case HID_DG_TIPPRESSURE
:
813 td
->curdata
.p
= value
;
816 if (usage
->code
== ABS_MT_TOOL_X
)
817 td
->curdata
.cx
= value
;
819 td
->curdata
.x
= value
;
822 if (usage
->code
== ABS_MT_TOOL_Y
)
823 td
->curdata
.cy
= value
;
825 td
->curdata
.y
= value
;
828 td
->curdata
.w
= value
;
831 td
->curdata
.h
= value
;
833 case HID_DG_SCANTIME
:
834 td
->timestamp
= mt_compute_timestamp(td
, field
, value
);
836 case HID_DG_CONTACTCOUNT
:
844 * For Win8 PTP touchpads we should only look at
845 * non finger/touch events in the first_packet of
846 * a (possible) multi-packet frame.
848 if ((cls
== MT_CLS_WIN_8
|| cls
== MT_CLS_WIN_8_DUAL
) &&
853 input_event(input
, usage
->type
, usage
->code
,
858 if (usage
->usage_index
+ 1 == field
->report_count
) {
859 /* we only take into account the last report. */
860 if (usage
->hid
== td
->last_slot_field
)
861 mt_complete_slot(td
, field
->hidinput
->input
);
867 static void mt_touch_report(struct hid_device
*hid
, struct hid_report
*report
)
869 struct mt_device
*td
= hid_get_drvdata(hid
);
870 struct hid_field
*field
;
875 /* sticky fingers release in progress, abort */
876 if (test_and_set_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
))
880 * Includes multi-packet support where subsequent
881 * packets are sent with zero contactcount.
883 if (td
->cc_index
>= 0) {
884 struct hid_field
*field
= report
->field
[td
->cc_index
];
885 int value
= field
->value
[td
->cc_value_index
];
887 td
->num_expected
= value
;
890 first_packet
= td
->num_received
== 0;
891 for (r
= 0; r
< report
->maxfield
; r
++) {
892 field
= report
->field
[r
];
893 count
= field
->report_count
;
895 if (!(HID_MAIN_ITEM_VARIABLE
& field
->flags
))
898 for (n
= 0; n
< count
; n
++)
899 mt_process_mt_event(hid
, field
, &field
->usage
[n
],
900 field
->value
[n
], first_packet
);
903 if (td
->num_received
>= td
->num_expected
)
904 mt_sync_frame(td
, report
->field
[0]->hidinput
->input
);
907 * Windows 8 specs says 2 things:
908 * - once a contact has been reported, it has to be reported in each
910 * - the report rate when fingers are present has to be at least
911 * the refresh rate of the screen, 60 or 120 Hz
913 * I interprete this that the specification forces a report rate of
914 * at least 60 Hz for a touchscreen to be certified.
915 * Which means that if we do not get a report whithin 16 ms, either
916 * something wrong happens, either the touchscreen forgets to send
917 * a release. Taking a reasonable margin allows to remove issues
918 * with USB communication or the load of the machine.
920 * Given that Win 8 devices are forced to send a release, this will
921 * only affect laggish machines and the ones that have a firmware
924 if (td
->mtclass
.quirks
& MT_QUIRK_STICKY_FINGERS
) {
925 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
))
926 mod_timer(&td
->release_timer
,
927 jiffies
+ msecs_to_jiffies(100));
929 del_timer(&td
->release_timer
);
932 clear_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
);
935 static int mt_touch_input_configured(struct hid_device
*hdev
,
936 struct hid_input
*hi
)
938 struct mt_device
*td
= hid_get_drvdata(hdev
);
939 struct mt_class
*cls
= &td
->mtclass
;
940 struct input_dev
*input
= hi
->input
;
943 if (!td
->maxcontacts
)
944 td
->maxcontacts
= MT_DEFAULT_MAXCONTACT
;
947 if (td
->serial_maybe
)
948 mt_post_parse_default_settings(td
);
950 if (cls
->is_indirect
)
951 td
->mt_flags
|= INPUT_MT_POINTER
;
953 if (cls
->quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
954 td
->mt_flags
|= INPUT_MT_DROP_UNUSED
;
956 /* check for clickpads */
957 if ((td
->mt_flags
& INPUT_MT_POINTER
) && (td
->buttons_count
== 1))
958 td
->is_buttonpad
= true;
960 if (td
->is_buttonpad
)
961 __set_bit(INPUT_PROP_BUTTONPAD
, input
->propbit
);
963 ret
= input_mt_init_slots(input
, td
->maxcontacts
, td
->mt_flags
);
971 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
973 static int mt_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
974 struct hid_field
*field
, struct hid_usage
*usage
,
975 unsigned long **bit
, int *max
)
977 struct mt_device
*td
= hid_get_drvdata(hdev
);
980 * If mtclass.export_all_inputs is not set, only map fields from
981 * TouchScreen or TouchPad collections. We need to ignore fields
982 * that belong to other collections such as Mouse that might have
983 * the same GenericDesktop usages.
985 if (!td
->mtclass
.export_all_inputs
&&
986 field
->application
!= HID_DG_TOUCHSCREEN
&&
987 field
->application
!= HID_DG_PEN
&&
988 field
->application
!= HID_DG_TOUCHPAD
&&
989 field
->application
!= HID_GD_KEYBOARD
&&
990 field
->application
!= HID_GD_SYSTEM_CONTROL
&&
991 field
->application
!= HID_CP_CONSUMER_CONTROL
&&
992 field
->application
!= HID_GD_WIRELESS_RADIO_CTLS
&&
993 !(field
->application
== HID_VD_ASUS_CUSTOM_MEDIA_KEYS
&&
994 td
->mtclass
.quirks
& MT_QUIRK_ASUS_CUSTOM_UP
))
998 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
999 * touchpad report descriptor. We need to treat these as an array to
1000 * map usages to input keys.
1002 if (field
->application
== HID_VD_ASUS_CUSTOM_MEDIA_KEYS
&&
1003 td
->mtclass
.quirks
& MT_QUIRK_ASUS_CUSTOM_UP
&&
1004 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_CUSTOM
) {
1005 set_bit(EV_REP
, hi
->input
->evbit
);
1006 if (field
->flags
& HID_MAIN_ITEM_VARIABLE
)
1007 field
->flags
&= ~HID_MAIN_ITEM_VARIABLE
;
1008 switch (usage
->hid
& HID_USAGE
) {
1009 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN
); break;
1010 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP
); break;
1011 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF
); break;
1012 case 0x6b: mt_map_key_clear(KEY_F21
); break;
1013 case 0x6c: mt_map_key_clear(KEY_SLEEP
); break;
1021 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1023 * The check for mt_report_id ensures we don't process
1024 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
1025 * collection, but within the report ID.
1027 if (field
->physical
== HID_DG_STYLUS
)
1029 else if ((field
->physical
== 0) &&
1030 (field
->report
->id
!= td
->mt_report_id
) &&
1031 (td
->mt_report_id
!= -1))
1034 if (field
->application
== HID_DG_TOUCHSCREEN
||
1035 field
->application
== HID_DG_TOUCHPAD
)
1036 return mt_touch_input_mapping(hdev
, hi
, field
, usage
, bit
, max
);
1038 /* let hid-core decide for the others */
1042 static int mt_input_mapped(struct hid_device
*hdev
, struct hid_input
*hi
,
1043 struct hid_field
*field
, struct hid_usage
*usage
,
1044 unsigned long **bit
, int *max
)
1047 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1050 if (field
->physical
== HID_DG_STYLUS
)
1053 if (field
->application
== HID_DG_TOUCHSCREEN
||
1054 field
->application
== HID_DG_TOUCHPAD
) {
1055 /* We own these mappings, tell hid-input to ignore them */
1059 /* let hid-core decide for the others */
1063 static int mt_event(struct hid_device
*hid
, struct hid_field
*field
,
1064 struct hid_usage
*usage
, __s32 value
)
1066 struct mt_device
*td
= hid_get_drvdata(hid
);
1068 if (field
->report
->id
== td
->mt_report_id
)
1069 return mt_touch_event(hid
, field
, usage
, value
);
1074 static void mt_report(struct hid_device
*hid
, struct hid_report
*report
)
1076 struct mt_device
*td
= hid_get_drvdata(hid
);
1077 struct hid_field
*field
= report
->field
[0];
1079 if (!(hid
->claimed
& HID_CLAIMED_INPUT
))
1082 if (report
->id
== td
->mt_report_id
)
1083 return mt_touch_report(hid
, report
);
1085 if (field
&& field
->hidinput
&& field
->hidinput
->input
)
1086 input_sync(field
->hidinput
->input
);
1089 static void mt_set_input_mode(struct hid_device
*hdev
)
1091 struct mt_device
*td
= hid_get_drvdata(hdev
);
1092 struct hid_report
*r
;
1093 struct hid_report_enum
*re
;
1094 struct mt_class
*cls
= &td
->mtclass
;
1098 if (td
->inputmode
< 0)
1101 re
= &(hdev
->report_enum
[HID_FEATURE_REPORT
]);
1102 r
= re
->report_id_hash
[td
->inputmode
];
1104 if (cls
->quirks
& MT_QUIRK_FORCE_GET_FEATURE
) {
1105 report_len
= hid_report_len(r
);
1106 buf
= hid_alloc_report_buf(r
, GFP_KERNEL
);
1108 hid_err(hdev
, "failed to allocate buffer for report\n");
1111 hid_hw_raw_request(hdev
, r
->id
, buf
, report_len
,
1113 HID_REQ_GET_REPORT
);
1116 r
->field
[0]->value
[td
->inputmode_index
] = td
->inputmode_value
;
1117 hid_hw_request(hdev
, r
, HID_REQ_SET_REPORT
);
1121 static void mt_set_maxcontacts(struct hid_device
*hdev
)
1123 struct mt_device
*td
= hid_get_drvdata(hdev
);
1124 struct hid_report
*r
;
1125 struct hid_report_enum
*re
;
1128 if (td
->maxcontact_report_id
< 0)
1131 if (!td
->mtclass
.maxcontacts
)
1134 re
= &hdev
->report_enum
[HID_FEATURE_REPORT
];
1135 r
= re
->report_id_hash
[td
->maxcontact_report_id
];
1137 max
= td
->mtclass
.maxcontacts
;
1138 fieldmax
= r
->field
[0]->logical_maximum
;
1139 max
= min(fieldmax
, max
);
1140 if (r
->field
[0]->value
[0] != max
) {
1141 r
->field
[0]->value
[0] = max
;
1142 hid_hw_request(hdev
, r
, HID_REQ_SET_REPORT
);
1147 static void mt_post_parse_default_settings(struct mt_device
*td
)
1149 __s32 quirks
= td
->mtclass
.quirks
;
1151 /* unknown serial device needs special quirks */
1152 if (td
->touches_by_report
== 1) {
1153 quirks
|= MT_QUIRK_ALWAYS_VALID
;
1154 quirks
&= ~MT_QUIRK_NOT_SEEN_MEANS_UP
;
1155 quirks
&= ~MT_QUIRK_VALID_IS_INRANGE
;
1156 quirks
&= ~MT_QUIRK_VALID_IS_CONFIDENCE
;
1157 quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
1160 td
->mtclass
.quirks
= quirks
;
1163 static void mt_post_parse(struct mt_device
*td
)
1165 struct mt_fields
*f
= td
->fields
;
1166 struct mt_class
*cls
= &td
->mtclass
;
1168 if (td
->touches_by_report
> 0) {
1169 int field_count_per_touch
= f
->length
/ td
->touches_by_report
;
1170 td
->last_slot_field
= f
->usages
[field_count_per_touch
- 1];
1173 if (td
->cc_index
< 0)
1174 cls
->quirks
&= ~MT_QUIRK_CONTACT_CNT_ACCURATE
;
1177 static int mt_input_configured(struct hid_device
*hdev
, struct hid_input
*hi
)
1179 struct mt_device
*td
= hid_get_drvdata(hdev
);
1181 const char *suffix
= NULL
;
1182 struct hid_field
*field
= hi
->report
->field
[0];
1185 if (hi
->report
->id
== td
->mt_report_id
) {
1186 ret
= mt_touch_input_configured(hdev
, hi
);
1192 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1193 * for the stylus. Check this first, and then rely on the application
1196 if (hi
->report
->field
[0]->physical
== HID_DG_STYLUS
) {
1198 /* force BTN_STYLUS to allow tablet matching in udev */
1199 __set_bit(BTN_STYLUS
, hi
->input
->keybit
);
1201 switch (field
->application
) {
1202 case HID_GD_KEYBOARD
:
1203 suffix
= "Keyboard";
1213 /* force BTN_STYLUS to allow tablet matching in udev */
1214 __set_bit(BTN_STYLUS
, hi
->input
->keybit
);
1216 case HID_DG_TOUCHSCREEN
:
1217 /* we do not set suffix = "Touchscreen" */
1219 case HID_DG_TOUCHPAD
:
1220 suffix
= "Touchpad";
1222 case HID_GD_SYSTEM_CONTROL
:
1223 suffix
= "System Control";
1225 case HID_CP_CONSUMER_CONTROL
:
1226 suffix
= "Consumer Control";
1228 case HID_GD_WIRELESS_RADIO_CTLS
:
1229 suffix
= "Wireless Radio Control";
1231 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS
:
1232 suffix
= "Custom Media Keys";
1241 name
= devm_kzalloc(&hi
->input
->dev
,
1242 strlen(hdev
->name
) + strlen(suffix
) + 2,
1245 sprintf(name
, "%s %s", hdev
->name
, suffix
);
1246 hi
->input
->name
= name
;
1253 static void mt_fix_const_field(struct hid_field
*field
, unsigned int usage
)
1255 if (field
->usage
[0].hid
!= usage
||
1256 !(field
->flags
& HID_MAIN_ITEM_CONSTANT
))
1259 field
->flags
&= ~HID_MAIN_ITEM_CONSTANT
;
1260 field
->flags
|= HID_MAIN_ITEM_VARIABLE
;
1263 static void mt_fix_const_fields(struct hid_device
*hdev
, unsigned int usage
)
1265 struct hid_report
*report
;
1268 list_for_each_entry(report
,
1269 &hdev
->report_enum
[HID_INPUT_REPORT
].report_list
,
1272 if (!report
->maxfield
)
1275 for (i
= 0; i
< report
->maxfield
; i
++)
1276 if (report
->field
[i
]->maxusage
>= 1)
1277 mt_fix_const_field(report
->field
[i
], usage
);
1281 static void mt_release_contacts(struct hid_device
*hid
)
1283 struct hid_input
*hidinput
;
1284 struct mt_device
*td
= hid_get_drvdata(hid
);
1286 list_for_each_entry(hidinput
, &hid
->inputs
, list
) {
1287 struct input_dev
*input_dev
= hidinput
->input
;
1288 struct input_mt
*mt
= input_dev
->mt
;
1292 for (i
= 0; i
< mt
->num_slots
; i
++) {
1293 input_mt_slot(input_dev
, i
);
1294 input_mt_report_slot_state(input_dev
,
1298 input_mt_sync_frame(input_dev
);
1299 input_sync(input_dev
);
1303 td
->num_received
= 0;
1306 static void mt_expired_timeout(struct timer_list
*t
)
1308 struct mt_device
*td
= from_timer(td
, t
, release_timer
);
1309 struct hid_device
*hdev
= td
->hdev
;
1312 * An input report came in just before we release the sticky fingers,
1313 * it will take care of the sticky fingers.
1315 if (test_and_set_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
))
1317 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS
, &td
->mt_io_flags
))
1318 mt_release_contacts(hdev
);
1319 clear_bit(MT_IO_FLAGS_RUNNING
, &td
->mt_io_flags
);
1322 static int mt_probe(struct hid_device
*hdev
, const struct hid_device_id
*id
)
1325 struct mt_device
*td
;
1326 struct mt_class
*mtclass
= mt_classes
; /* MT_CLS_DEFAULT */
1328 for (i
= 0; mt_classes
[i
].name
; i
++) {
1329 if (id
->driver_data
== mt_classes
[i
].name
) {
1330 mtclass
= &(mt_classes
[i
]);
1335 td
= devm_kzalloc(&hdev
->dev
, sizeof(struct mt_device
), GFP_KERNEL
);
1337 dev_err(&hdev
->dev
, "cannot allocate multitouch data\n");
1341 td
->mtclass
= *mtclass
;
1343 td
->maxcontact_report_id
= -1;
1344 td
->inputmode_value
= MT_INPUTMODE_TOUCHSCREEN
;
1346 td
->mt_report_id
= -1;
1347 hid_set_drvdata(hdev
, td
);
1349 td
->fields
= devm_kzalloc(&hdev
->dev
, sizeof(struct mt_fields
),
1352 dev_err(&hdev
->dev
, "cannot allocate multitouch fields data\n");
1356 if (id
->vendor
== HID_ANY_ID
&& id
->product
== HID_ANY_ID
)
1357 td
->serial_maybe
= true;
1360 * Store the initial quirk state
1362 td
->initial_quirks
= hdev
->quirks
;
1364 /* This allows the driver to correctly support devices
1365 * that emit events over several HID messages.
1367 hdev
->quirks
|= HID_QUIRK_NO_INPUT_SYNC
;
1370 * This allows the driver to handle different input sensors
1371 * that emits events through different reports on the same HID
1374 hdev
->quirks
|= HID_QUIRK_MULTI_INPUT
;
1375 hdev
->quirks
|= HID_QUIRK_NO_EMPTY_INPUT
;
1378 * Some multitouch screens do not like to be polled for input
1379 * reports. Fortunately, the Win8 spec says that all touches
1380 * should be sent during each report, making the initialization
1381 * of input reports unnecessary. For Win7 devices, well, let's hope
1382 * they will still be happy (this is only be a problem if a touch
1383 * was already there while probing the device).
1385 * In addition some touchpads do not behave well if we read
1386 * all feature reports from them. Instead we prevent
1387 * initial report fetching and then selectively fetch each
1388 * report we are interested in.
1390 hdev
->quirks
|= HID_QUIRK_NO_INIT_REPORTS
;
1392 timer_setup(&td
->release_timer
, mt_expired_timeout
, 0);
1394 ret
= hid_parse(hdev
);
1398 if (mtclass
->quirks
& MT_QUIRK_FIX_CONST_CONTACT_ID
)
1399 mt_fix_const_fields(hdev
, HID_DG_CONTACTID
);
1401 ret
= hid_hw_start(hdev
, HID_CONNECT_DEFAULT
);
1405 ret
= sysfs_create_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
1407 dev_warn(&hdev
->dev
, "Cannot allocate sysfs group for %s\n",
1410 mt_set_maxcontacts(hdev
);
1411 mt_set_input_mode(hdev
);
1413 /* release .fields memory as it is not used anymore */
1414 devm_kfree(&hdev
->dev
, td
->fields
);
1421 static int mt_reset_resume(struct hid_device
*hdev
)
1423 mt_release_contacts(hdev
);
1424 mt_set_maxcontacts(hdev
);
1425 mt_set_input_mode(hdev
);
1429 static int mt_resume(struct hid_device
*hdev
)
1431 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1432 * It should be safe to send it to other devices too.
1433 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1435 hid_hw_idle(hdev
, 0, 0, HID_REQ_SET_IDLE
);
1441 static void mt_remove(struct hid_device
*hdev
)
1443 struct mt_device
*td
= hid_get_drvdata(hdev
);
1445 del_timer_sync(&td
->release_timer
);
1447 sysfs_remove_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
1449 hdev
->quirks
= td
->initial_quirks
;
1453 * This list contains only:
1454 * - VID/PID of products not working with the default multitouch handling
1455 * - 2 generic rules.
1456 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1458 static const struct hid_device_id mt_devices
[] = {
1461 { .driver_data
= MT_CLS_3M
,
1462 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1463 USB_DEVICE_ID_3M1968
) },
1464 { .driver_data
= MT_CLS_3M
,
1465 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1466 USB_DEVICE_ID_3M2256
) },
1467 { .driver_data
= MT_CLS_3M
,
1468 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
1469 USB_DEVICE_ID_3M3266
) },
1472 { .driver_data
= MT_CLS_WIN_8_DUAL
,
1473 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1474 USB_VENDOR_ID_ALPS_JP
,
1475 HID_DEVICE_ID_ALPS_U1_DUAL_PTP
) },
1476 { .driver_data
= MT_CLS_WIN_8_DUAL
,
1477 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1478 USB_VENDOR_ID_ALPS_JP
,
1479 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP
) },
1480 { .driver_data
= MT_CLS_WIN_8_DUAL
,
1481 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1482 USB_VENDOR_ID_ALPS_JP
,
1483 HID_DEVICE_ID_ALPS_U1_PTP_2
) },
1485 /* Lenovo X1 TAB Gen 2 */
1486 { .driver_data
= MT_CLS_WIN_8_DUAL
,
1487 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1488 USB_VENDOR_ID_LENOVO
,
1489 USB_DEVICE_ID_LENOVO_X1_TAB
) },
1492 { .driver_data
= MT_CLS_EXPORT_ALL_INPUTS
,
1493 MT_USB_DEVICE(USB_VENDOR_ID_ANTON
,
1494 USB_DEVICE_ID_ANTON_TOUCH_PAD
) },
1497 { .driver_data
= MT_CLS_ASUS
,
1498 HID_DEVICE(BUS_USB
, HID_GROUP_MULTITOUCH_WIN_8
,
1499 USB_VENDOR_ID_ASUSTEK
,
1500 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD
) },
1503 { .driver_data
= MT_CLS_SERIAL
,
1504 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL
,
1505 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER
) },
1507 /* Baanto multitouch devices */
1508 { .driver_data
= MT_CLS_NSMU
,
1509 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO
,
1510 USB_DEVICE_ID_BAANTO_MT_190W2
) },
1513 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
1514 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1515 USB_DEVICE_ID_CANDO_MULTI_TOUCH
) },
1516 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
1517 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1518 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6
) },
1520 /* Chunghwa Telecom touch panels */
1521 { .driver_data
= MT_CLS_NSMU
,
1522 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT
,
1523 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH
) },
1525 /* CJTouch panels */
1526 { .driver_data
= MT_CLS_NSMU
,
1527 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH
,
1528 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020
) },
1529 { .driver_data
= MT_CLS_NSMU
,
1530 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH
,
1531 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040
) },
1533 /* CVTouch panels */
1534 { .driver_data
= MT_CLS_NSMU
,
1535 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH
,
1536 USB_DEVICE_ID_CVTOUCH_SCREEN
) },
1538 /* eGalax devices (resistive) */
1539 { .driver_data
= MT_CLS_EGALAX
,
1540 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1541 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D
) },
1542 { .driver_data
= MT_CLS_EGALAX
,
1543 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1544 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E
) },
1546 /* eGalax devices (capacitive) */
1547 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1548 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1549 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207
) },
1550 { .driver_data
= MT_CLS_EGALAX
,
1551 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1552 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C
) },
1553 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1554 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1555 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224
) },
1556 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1557 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1558 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A
) },
1559 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1560 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1561 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E
) },
1562 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1563 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1564 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262
) },
1565 { .driver_data
= MT_CLS_EGALAX
,
1566 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1567 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B
) },
1568 { .driver_data
= MT_CLS_EGALAX
,
1569 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1570 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1
) },
1571 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1572 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1573 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA
) },
1574 { .driver_data
= MT_CLS_EGALAX
,
1575 HID_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1576 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4
) },
1577 { .driver_data
= MT_CLS_EGALAX
,
1578 HID_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1579 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0
) },
1580 { .driver_data
= MT_CLS_EGALAX
,
1581 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1582 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA
) },
1583 { .driver_data
= MT_CLS_EGALAX
,
1584 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1585 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302
) },
1586 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1587 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1588 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349
) },
1589 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1590 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1591 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7
) },
1592 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
1593 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
1594 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001
) },
1596 /* Elitegroup panel */
1597 { .driver_data
= MT_CLS_SERIAL
,
1598 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP
,
1599 USB_DEVICE_ID_ELITEGROUP_05D8
) },
1601 /* Flatfrog Panels */
1602 { .driver_data
= MT_CLS_FLATFROG
,
1603 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG
,
1604 USB_DEVICE_ID_MULTITOUCH_3200
) },
1606 /* FocalTech Panels */
1607 { .driver_data
= MT_CLS_SERIAL
,
1608 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL
,
1609 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH
) },
1611 /* GeneralTouch panel */
1612 { .driver_data
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
1613 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1614 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS
) },
1615 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1616 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1617 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS
) },
1618 { .driver_data
= MT_CLS_GENERALTOUCH_TWOFINGERS
,
1619 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1620 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101
) },
1621 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1622 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1623 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102
) },
1624 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1625 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1626 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106
) },
1627 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1628 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1629 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A
) },
1630 { .driver_data
= MT_CLS_GENERALTOUCH_PWT_TENFINGERS
,
1631 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
1632 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100
) },
1634 /* Gametel game controller */
1635 { .driver_data
= MT_CLS_NSMU
,
1636 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL
,
1637 USB_DEVICE_ID_GAMETEL_MT_MODE
) },
1639 /* GoodTouch panels */
1640 { .driver_data
= MT_CLS_NSMU
,
1641 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH
,
1642 USB_DEVICE_ID_GOODTOUCH_000f
) },
1645 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
1646 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT
,
1647 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH
) },
1649 /* Ilitek dual touch panel */
1650 { .driver_data
= MT_CLS_NSMU
,
1651 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK
,
1652 USB_DEVICE_ID_ILITEK_MULTITOUCH
) },
1654 /* LG Melfas panel */
1655 { .driver_data
= MT_CLS_LG
,
1656 HID_USB_DEVICE(USB_VENDOR_ID_LG
,
1657 USB_DEVICE_ID_LG_MELFAS_MT
) },
1660 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
1661 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
1662 USB_DEVICE_ID_ASUS_T91MT
)},
1663 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
1664 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
1665 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO
) },
1666 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
1667 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX
,
1668 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART
) },
1670 /* Panasonic panels */
1671 { .driver_data
= MT_CLS_PANASONIC
,
1672 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
1673 USB_DEVICE_ID_PANABOARD_UBT780
) },
1674 { .driver_data
= MT_CLS_PANASONIC
,
1675 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
1676 USB_DEVICE_ID_PANABOARD_UBT880
) },
1679 { .driver_data
= MT_CLS_NSMU
,
1680 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK
,
1681 USB_DEVICE_ID_NOVATEK_PCT
) },
1684 { .driver_data
= MT_CLS_NSMU
,
1685 HID_DEVICE(BUS_I2C
, HID_GROUP_MULTITOUCH_WIN_8
,
1686 USB_VENDOR_ID_NTRIG
, 0x1b05) },
1688 /* PixArt optical touch screen */
1689 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
1690 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
1691 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN
) },
1692 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
1693 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
1694 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1
) },
1695 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
1696 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
1697 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2
) },
1699 /* PixCir-based panels */
1700 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
1701 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
1702 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH
) },
1704 /* Quanta-based panels */
1705 { .driver_data
= MT_CLS_CONFIDENCE_CONTACT_ID
,
1706 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA
,
1707 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001
) },
1709 /* Stantum panels */
1710 { .driver_data
= MT_CLS_CONFIDENCE
,
1711 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM
,
1712 USB_DEVICE_ID_MTP_STM
)},
1714 /* TopSeed panels */
1715 { .driver_data
= MT_CLS_TOPSEED
,
1716 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2
,
1717 USB_DEVICE_ID_TOPSEED2_PERIPAD_701
) },
1719 /* Touch International panels */
1720 { .driver_data
= MT_CLS_NSMU
,
1721 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL
,
1722 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH
) },
1725 { .driver_data
= MT_CLS_NSMU
,
1726 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
1727 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709
) },
1728 { .driver_data
= MT_CLS_NSMU
,
1729 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
1730 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19
) },
1733 { .driver_data
= MT_CLS_VTL
,
1734 MT_USB_DEVICE(USB_VENDOR_ID_VTL
,
1735 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F
) },
1737 /* Wistron panels */
1738 { .driver_data
= MT_CLS_NSMU
,
1739 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON
,
1740 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH
) },
1743 { .driver_data
= MT_CLS_NSMU
,
1744 MT_USB_DEVICE(USB_VENDOR_ID_XAT
,
1745 USB_DEVICE_ID_XAT_CSR
) },
1748 { .driver_data
= MT_CLS_NSMU
,
1749 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1750 USB_DEVICE_ID_XIROKU_SPX
) },
1751 { .driver_data
= MT_CLS_NSMU
,
1752 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1753 USB_DEVICE_ID_XIROKU_MPX
) },
1754 { .driver_data
= MT_CLS_NSMU
,
1755 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1756 USB_DEVICE_ID_XIROKU_CSR
) },
1757 { .driver_data
= MT_CLS_NSMU
,
1758 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1759 USB_DEVICE_ID_XIROKU_SPX1
) },
1760 { .driver_data
= MT_CLS_NSMU
,
1761 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1762 USB_DEVICE_ID_XIROKU_MPX1
) },
1763 { .driver_data
= MT_CLS_NSMU
,
1764 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1765 USB_DEVICE_ID_XIROKU_CSR1
) },
1766 { .driver_data
= MT_CLS_NSMU
,
1767 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1768 USB_DEVICE_ID_XIROKU_SPX2
) },
1769 { .driver_data
= MT_CLS_NSMU
,
1770 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1771 USB_DEVICE_ID_XIROKU_MPX2
) },
1772 { .driver_data
= MT_CLS_NSMU
,
1773 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1774 USB_DEVICE_ID_XIROKU_CSR2
) },
1776 /* Google MT devices */
1777 { .driver_data
= MT_CLS_GOOGLE
,
1778 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_ANY
, USB_VENDOR_ID_GOOGLE
,
1779 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE
) },
1781 /* Generic MT device */
1782 { HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH
, HID_ANY_ID
, HID_ANY_ID
) },
1784 /* Generic Win 8 certified MT device */
1785 { .driver_data
= MT_CLS_WIN_8
,
1786 HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH_WIN_8
,
1787 HID_ANY_ID
, HID_ANY_ID
) },
1790 MODULE_DEVICE_TABLE(hid
, mt_devices
);
1792 static const struct hid_usage_id mt_grabbed_usages
[] = {
1793 { HID_ANY_ID
, HID_ANY_ID
, HID_ANY_ID
},
1794 { HID_ANY_ID
- 1, HID_ANY_ID
- 1, HID_ANY_ID
- 1}
1797 static struct hid_driver mt_driver
= {
1798 .name
= "hid-multitouch",
1799 .id_table
= mt_devices
,
1801 .remove
= mt_remove
,
1802 .input_mapping
= mt_input_mapping
,
1803 .input_mapped
= mt_input_mapped
,
1804 .input_configured
= mt_input_configured
,
1805 .feature_mapping
= mt_feature_mapping
,
1806 .usage_table
= mt_grabbed_usages
,
1808 .report
= mt_report
,
1810 .reset_resume
= mt_reset_resume
,
1811 .resume
= mt_resume
,
1814 module_hid_driver(mt_driver
);