2 * HID driver for multitouch panels
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
8 * This code is partly based on hid-egalax.c:
10 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
11 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
12 * Copyright (c) 2010 Canonical, Ltd.
14 * This code is partly based on hid-3m-pct.c:
16 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
17 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
18 * Copyright (c) 2010 Canonical, Ltd.
23 * This program is free software; you can redistribute it and/or modify it
24 * under the terms of the GNU General Public License as published by the Free
25 * Software Foundation; either version 2 of the License, or (at your option)
29 #include <linux/device.h>
30 #include <linux/hid.h>
31 #include <linux/module.h>
32 #include <linux/slab.h>
33 #include <linux/usb.h>
34 #include <linux/input/mt.h>
35 #include "usbhid/usbhid.h"
38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
40 MODULE_DESCRIPTION("HID multitouch panels");
41 MODULE_LICENSE("GPL");
45 /* quirks to control the device */
46 #define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0)
47 #define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
48 #define MT_QUIRK_CYPRESS (1 << 2)
49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
50 #define MT_QUIRK_ALWAYS_VALID (1 << 4)
51 #define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
52 #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
57 __s32 contactid
; /* the device ContactID assigned to this slot */
58 bool touch_state
; /* is the touch valid? */
59 bool seen_in_this_frame
;/* has this slot been updated */
63 __s32 name
; /* MT_CLS */
65 __s32 sn_move
; /* Signal/noise ratio for move events */
66 __s32 sn_width
; /* Signal/noise ratio for width events */
67 __s32 sn_height
; /* Signal/noise ratio for height events */
68 __s32 sn_pressure
; /* Signal/noise ratio for pressure events */
70 bool is_indirect
; /* true for touchpads */
74 unsigned usages
[HID_MAX_FIELDS
];
79 struct mt_slot curdata
; /* placeholder of incoming data */
80 struct mt_class mtclass
; /* our mt device class */
81 struct mt_fields
*fields
; /* temporary placeholder for storing the
83 unsigned last_field_index
; /* last field index of the report */
84 unsigned last_slot_field
; /* the last field of a slot */
85 __s8 inputmode
; /* InputMode HID feature, -1 if non-existent */
86 __s8 maxcontact_report_id
; /* Maximum Contact Number HID feature,
88 __u8 num_received
; /* how many contacts we received */
89 __u8 num_expected
; /* expected last contact index */
91 __u8 touches_by_report
; /* how many touches are present in one report:
92 * 1 means we should use a serial protocol
93 * > 1 means hybrid (multitouch) protocol */
94 bool curvalid
; /* is the current contact valid? */
95 struct mt_slot
*slots
;
98 /* classes of device behavior */
99 #define MT_CLS_DEFAULT 0x0001
101 #define MT_CLS_SERIAL 0x0002
102 #define MT_CLS_CONFIDENCE 0x0003
103 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
104 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
105 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
106 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
107 #define MT_CLS_DUAL_NSMU_CONTACTID 0x0008
108 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
110 /* vendor specific classes */
111 #define MT_CLS_3M 0x0101
112 #define MT_CLS_CYPRESS 0x0102
113 #define MT_CLS_EGALAX 0x0103
114 #define MT_CLS_EGALAX_SERIAL 0x0104
115 #define MT_CLS_TOPSEED 0x0105
116 #define MT_CLS_PANASONIC 0x0106
118 #define MT_DEFAULT_MAXCONTACT 10
120 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
121 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
124 * these device-dependent functions determine what slot corresponds
125 * to a valid contact that was just read.
128 static int cypress_compute_slot(struct mt_device
*td
)
130 if (td
->curdata
.contactid
!= 0 || td
->num_received
== 0)
131 return td
->curdata
.contactid
;
136 static int find_slot_from_contactid(struct mt_device
*td
)
139 for (i
= 0; i
< td
->maxcontacts
; ++i
) {
140 if (td
->slots
[i
].contactid
== td
->curdata
.contactid
&&
141 td
->slots
[i
].touch_state
)
144 for (i
= 0; i
< td
->maxcontacts
; ++i
) {
145 if (!td
->slots
[i
].seen_in_this_frame
&&
146 !td
->slots
[i
].touch_state
)
149 /* should not occurs. If this happens that means
150 * that the device sent more touches that it says
151 * in the report descriptor. It is ignored then. */
155 static struct mt_class mt_classes
[] = {
156 { .name
= MT_CLS_DEFAULT
,
157 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
},
158 { .name
= MT_CLS_SERIAL
,
159 .quirks
= MT_QUIRK_ALWAYS_VALID
},
160 { .name
= MT_CLS_CONFIDENCE
,
161 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
},
162 { .name
= MT_CLS_CONFIDENCE_CONTACT_ID
,
163 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
164 MT_QUIRK_SLOT_IS_CONTACTID
},
165 { .name
= MT_CLS_CONFIDENCE_MINUS_ONE
,
166 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
167 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
},
168 { .name
= MT_CLS_DUAL_INRANGE_CONTACTID
,
169 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
170 MT_QUIRK_SLOT_IS_CONTACTID
,
172 { .name
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
173 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
174 MT_QUIRK_SLOT_IS_CONTACTNUMBER
,
176 { .name
= MT_CLS_DUAL_NSMU_CONTACTID
,
177 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
178 MT_QUIRK_SLOT_IS_CONTACTID
,
180 { .name
= MT_CLS_INRANGE_CONTACTNUMBER
,
181 .quirks
= MT_QUIRK_VALID_IS_INRANGE
|
182 MT_QUIRK_SLOT_IS_CONTACTNUMBER
},
185 * vendor specific classes
188 .quirks
= MT_QUIRK_VALID_IS_CONFIDENCE
|
189 MT_QUIRK_SLOT_IS_CONTACTID
,
193 { .name
= MT_CLS_CYPRESS
,
194 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
|
197 { .name
= MT_CLS_EGALAX
,
198 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
199 MT_QUIRK_VALID_IS_INRANGE
,
203 { .name
= MT_CLS_EGALAX_SERIAL
,
204 .quirks
= MT_QUIRK_SLOT_IS_CONTACTID
|
205 MT_QUIRK_ALWAYS_VALID
,
209 { .name
= MT_CLS_TOPSEED
,
210 .quirks
= MT_QUIRK_ALWAYS_VALID
,
214 { .name
= MT_CLS_PANASONIC
,
215 .quirks
= MT_QUIRK_NOT_SEEN_MEANS_UP
,
221 static ssize_t
mt_show_quirks(struct device
*dev
,
222 struct device_attribute
*attr
,
225 struct hid_device
*hdev
= container_of(dev
, struct hid_device
, dev
);
226 struct mt_device
*td
= hid_get_drvdata(hdev
);
228 return sprintf(buf
, "%u\n", td
->mtclass
.quirks
);
231 static ssize_t
mt_set_quirks(struct device
*dev
,
232 struct device_attribute
*attr
,
233 const char *buf
, size_t count
)
235 struct hid_device
*hdev
= container_of(dev
, struct hid_device
, dev
);
236 struct mt_device
*td
= hid_get_drvdata(hdev
);
240 if (kstrtoul(buf
, 0, &val
))
243 td
->mtclass
.quirks
= val
;
248 static DEVICE_ATTR(quirks
, S_IWUSR
| S_IRUGO
, mt_show_quirks
, mt_set_quirks
);
250 static struct attribute
*sysfs_attrs
[] = {
251 &dev_attr_quirks
.attr
,
255 static struct attribute_group mt_attribute_group
= {
259 static void mt_feature_mapping(struct hid_device
*hdev
,
260 struct hid_field
*field
, struct hid_usage
*usage
)
262 struct mt_device
*td
= hid_get_drvdata(hdev
);
264 switch (usage
->hid
) {
265 case HID_DG_INPUTMODE
:
266 td
->inputmode
= field
->report
->id
;
268 case HID_DG_CONTACTMAX
:
269 td
->maxcontact_report_id
= field
->report
->id
;
270 td
->maxcontacts
= field
->value
[0];
271 if (td
->mtclass
.maxcontacts
)
272 /* check if the maxcontacts is given by the class */
273 td
->maxcontacts
= td
->mtclass
.maxcontacts
;
279 static void set_abs(struct input_dev
*input
, unsigned int code
,
280 struct hid_field
*field
, int snratio
)
282 int fmin
= field
->logical_minimum
;
283 int fmax
= field
->logical_maximum
;
284 int fuzz
= snratio
? (fmax
- fmin
) / snratio
: 0;
285 input_set_abs_params(input
, code
, fmin
, fmax
, fuzz
, 0);
288 static void mt_store_field(struct hid_usage
*usage
, struct mt_device
*td
,
289 struct hid_input
*hi
)
291 struct mt_fields
*f
= td
->fields
;
293 if (f
->length
>= HID_MAX_FIELDS
)
296 f
->usages
[f
->length
++] = usage
->hid
;
299 static int mt_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
300 struct hid_field
*field
, struct hid_usage
*usage
,
301 unsigned long **bit
, int *max
)
303 struct mt_device
*td
= hid_get_drvdata(hdev
);
304 struct mt_class
*cls
= &td
->mtclass
;
307 /* Only map fields from TouchScreen or TouchPad collections.
308 * We need to ignore fields that belong to other collections
309 * such as Mouse that might have the same GenericDesktop usages. */
310 if (field
->application
== HID_DG_TOUCHSCREEN
)
311 set_bit(INPUT_PROP_DIRECT
, hi
->input
->propbit
);
312 else if (field
->application
!= HID_DG_TOUCHPAD
)
315 /* In case of an indirect device (touchpad), we need to add
316 * specific BTN_TOOL_* to be handled by the synaptics xorg
318 * We also consider that touchscreens providing buttons are touchpads.
320 if (field
->application
== HID_DG_TOUCHPAD
||
321 (usage
->hid
& HID_USAGE_PAGE
) == HID_UP_BUTTON
||
323 set_bit(INPUT_PROP_POINTER
, hi
->input
->propbit
);
324 set_bit(BTN_TOOL_FINGER
, hi
->input
->keybit
);
325 set_bit(BTN_TOOL_DOUBLETAP
, hi
->input
->keybit
);
326 set_bit(BTN_TOOL_TRIPLETAP
, hi
->input
->keybit
);
327 set_bit(BTN_TOOL_QUADTAP
, hi
->input
->keybit
);
330 /* eGalax devices provide a Digitizer.Stylus input which overrides
331 * the correct Digitizers.Finger X/Y ranges.
332 * Let's just ignore this input. */
333 if (field
->physical
== HID_DG_STYLUS
)
336 switch (usage
->hid
& HID_USAGE_PAGE
) {
339 switch (usage
->hid
) {
341 hid_map_usage(hi
, usage
, bit
, max
,
342 EV_ABS
, ABS_MT_POSITION_X
);
343 set_abs(hi
->input
, ABS_MT_POSITION_X
, field
,
345 /* touchscreen emulation */
346 set_abs(hi
->input
, ABS_X
, field
, cls
->sn_move
);
347 mt_store_field(usage
, td
, hi
);
348 td
->last_field_index
= field
->index
;
351 hid_map_usage(hi
, usage
, bit
, max
,
352 EV_ABS
, ABS_MT_POSITION_Y
);
353 set_abs(hi
->input
, ABS_MT_POSITION_Y
, field
,
355 /* touchscreen emulation */
356 set_abs(hi
->input
, ABS_Y
, field
, cls
->sn_move
);
357 mt_store_field(usage
, td
, hi
);
358 td
->last_field_index
= field
->index
;
363 case HID_UP_DIGITIZER
:
364 switch (usage
->hid
) {
366 mt_store_field(usage
, td
, hi
);
367 td
->last_field_index
= field
->index
;
369 case HID_DG_CONFIDENCE
:
370 mt_store_field(usage
, td
, hi
);
371 td
->last_field_index
= field
->index
;
373 case HID_DG_TIPSWITCH
:
374 hid_map_usage(hi
, usage
, bit
, max
, EV_KEY
, BTN_TOUCH
);
375 input_set_capability(hi
->input
, EV_KEY
, BTN_TOUCH
);
376 mt_store_field(usage
, td
, hi
);
377 td
->last_field_index
= field
->index
;
379 case HID_DG_CONTACTID
:
380 if (!td
->maxcontacts
)
381 td
->maxcontacts
= MT_DEFAULT_MAXCONTACT
;
382 input_mt_init_slots(hi
->input
, td
->maxcontacts
);
383 mt_store_field(usage
, td
, hi
);
384 td
->last_field_index
= field
->index
;
385 td
->touches_by_report
++;
388 hid_map_usage(hi
, usage
, bit
, max
,
389 EV_ABS
, ABS_MT_TOUCH_MAJOR
);
390 set_abs(hi
->input
, ABS_MT_TOUCH_MAJOR
, field
,
392 mt_store_field(usage
, td
, hi
);
393 td
->last_field_index
= field
->index
;
396 hid_map_usage(hi
, usage
, bit
, max
,
397 EV_ABS
, ABS_MT_TOUCH_MINOR
);
398 set_abs(hi
->input
, ABS_MT_TOUCH_MINOR
, field
,
400 input_set_abs_params(hi
->input
,
401 ABS_MT_ORIENTATION
, 0, 1, 0, 0);
402 mt_store_field(usage
, td
, hi
);
403 td
->last_field_index
= field
->index
;
405 case HID_DG_TIPPRESSURE
:
406 hid_map_usage(hi
, usage
, bit
, max
,
407 EV_ABS
, ABS_MT_PRESSURE
);
408 set_abs(hi
->input
, ABS_MT_PRESSURE
, field
,
410 /* touchscreen emulation */
411 set_abs(hi
->input
, ABS_PRESSURE
, field
,
413 mt_store_field(usage
, td
, hi
);
414 td
->last_field_index
= field
->index
;
416 case HID_DG_CONTACTCOUNT
:
417 td
->last_field_index
= field
->index
;
419 case HID_DG_CONTACTMAX
:
420 /* we don't set td->last_slot_field as contactcount and
421 * contact max are global to the report */
422 td
->last_field_index
= field
->index
;
426 /* Legacy devices use TIPSWITCH and not TOUCH.
427 * Let's just ignore this field. */
429 /* let hid-input decide for the others */
433 code
= BTN_MOUSE
+ ((usage
->hid
- 1) & HID_USAGE
);
434 hid_map_usage(hi
, usage
, bit
, max
, EV_KEY
, code
);
435 input_set_capability(hi
->input
, EV_KEY
, code
);
439 /* we do not want to map these: no input-oriented meaning */
446 static int mt_input_mapped(struct hid_device
*hdev
, struct hid_input
*hi
,
447 struct hid_field
*field
, struct hid_usage
*usage
,
448 unsigned long **bit
, int *max
)
450 if (usage
->type
== EV_KEY
|| usage
->type
== EV_ABS
)
451 set_bit(usage
->type
, hi
->input
->evbit
);
456 static int mt_compute_slot(struct mt_device
*td
)
458 __s32 quirks
= td
->mtclass
.quirks
;
460 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID
)
461 return td
->curdata
.contactid
;
463 if (quirks
& MT_QUIRK_CYPRESS
)
464 return cypress_compute_slot(td
);
466 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTNUMBER
)
467 return td
->num_received
;
469 if (quirks
& MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE
)
470 return td
->curdata
.contactid
- 1;
472 return find_slot_from_contactid(td
);
476 * this function is called when a whole contact has been processed,
477 * so that it can assign it to a slot and store the data there
479 static void mt_complete_slot(struct mt_device
*td
)
481 td
->curdata
.seen_in_this_frame
= true;
483 int slotnum
= mt_compute_slot(td
);
485 if (slotnum
>= 0 && slotnum
< td
->maxcontacts
)
486 td
->slots
[slotnum
] = td
->curdata
;
493 * this function is called when a whole packet has been received and processed,
494 * so that it can decide what to send to the input layer.
496 static void mt_emit_event(struct mt_device
*td
, struct input_dev
*input
)
500 for (i
= 0; i
< td
->maxcontacts
; ++i
) {
501 struct mt_slot
*s
= &(td
->slots
[i
]);
502 if ((td
->mtclass
.quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
) &&
503 !s
->seen_in_this_frame
) {
504 s
->touch_state
= false;
507 input_mt_slot(input
, i
);
508 input_mt_report_slot_state(input
, MT_TOOL_FINGER
,
510 if (s
->touch_state
) {
511 /* this finger is on the screen */
512 int wide
= (s
->w
> s
->h
);
513 /* divided by two to match visual scale of touch */
514 int major
= max(s
->w
, s
->h
) >> 1;
515 int minor
= min(s
->w
, s
->h
) >> 1;
517 input_event(input
, EV_ABS
, ABS_MT_POSITION_X
, s
->x
);
518 input_event(input
, EV_ABS
, ABS_MT_POSITION_Y
, s
->y
);
519 input_event(input
, EV_ABS
, ABS_MT_ORIENTATION
, wide
);
520 input_event(input
, EV_ABS
, ABS_MT_PRESSURE
, s
->p
);
521 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MAJOR
, major
);
522 input_event(input
, EV_ABS
, ABS_MT_TOUCH_MINOR
, minor
);
524 s
->seen_in_this_frame
= false;
528 input_mt_report_pointer_emulation(input
, true);
530 td
->num_received
= 0;
535 static int mt_event(struct hid_device
*hid
, struct hid_field
*field
,
536 struct hid_usage
*usage
, __s32 value
)
538 struct mt_device
*td
= hid_get_drvdata(hid
);
539 __s32 quirks
= td
->mtclass
.quirks
;
541 if (hid
->claimed
& HID_CLAIMED_INPUT
&& td
->slots
) {
542 switch (usage
->hid
) {
544 if (quirks
& MT_QUIRK_ALWAYS_VALID
)
546 else if (quirks
& MT_QUIRK_VALID_IS_INRANGE
)
547 td
->curvalid
= value
;
549 case HID_DG_TIPSWITCH
:
550 if (quirks
& MT_QUIRK_NOT_SEEN_MEANS_UP
)
551 td
->curvalid
= value
;
552 td
->curdata
.touch_state
= value
;
554 case HID_DG_CONFIDENCE
:
555 if (quirks
& MT_QUIRK_VALID_IS_CONFIDENCE
)
556 td
->curvalid
= value
;
558 case HID_DG_CONTACTID
:
559 td
->curdata
.contactid
= value
;
561 case HID_DG_TIPPRESSURE
:
562 td
->curdata
.p
= value
;
565 td
->curdata
.x
= value
;
568 td
->curdata
.y
= value
;
571 td
->curdata
.w
= value
;
574 td
->curdata
.h
= value
;
576 case HID_DG_CONTACTCOUNT
:
578 * Includes multi-packet support where subsequent
579 * packets are sent with zero contactcount.
582 td
->num_expected
= value
;
589 /* fallback to the generic hidinput handling */
593 if (usage
->hid
== td
->last_slot_field
)
594 mt_complete_slot(td
);
596 if (field
->index
== td
->last_field_index
597 && td
->num_received
>= td
->num_expected
)
598 mt_emit_event(td
, field
->hidinput
->input
);
602 /* we have handled the hidinput part, now remains hiddev */
603 if (hid
->claimed
& HID_CLAIMED_HIDDEV
&& hid
->hiddev_hid_event
)
604 hid
->hiddev_hid_event(hid
, field
, usage
, value
);
609 static void mt_set_input_mode(struct hid_device
*hdev
)
611 struct mt_device
*td
= hid_get_drvdata(hdev
);
612 struct hid_report
*r
;
613 struct hid_report_enum
*re
;
615 if (td
->inputmode
< 0)
618 re
= &(hdev
->report_enum
[HID_FEATURE_REPORT
]);
619 r
= re
->report_id_hash
[td
->inputmode
];
621 r
->field
[0]->value
[0] = 0x02;
622 usbhid_submit_report(hdev
, r
, USB_DIR_OUT
);
626 static void mt_set_maxcontacts(struct hid_device
*hdev
)
628 struct mt_device
*td
= hid_get_drvdata(hdev
);
629 struct hid_report
*r
;
630 struct hid_report_enum
*re
;
633 if (td
->maxcontact_report_id
< 0)
636 if (!td
->mtclass
.maxcontacts
)
639 re
= &hdev
->report_enum
[HID_FEATURE_REPORT
];
640 r
= re
->report_id_hash
[td
->maxcontact_report_id
];
642 max
= td
->mtclass
.maxcontacts
;
643 fieldmax
= r
->field
[0]->logical_maximum
;
644 max
= min(fieldmax
, max
);
645 if (r
->field
[0]->value
[0] != max
) {
646 r
->field
[0]->value
[0] = max
;
647 usbhid_submit_report(hdev
, r
, USB_DIR_OUT
);
652 static void mt_post_parse_default_settings(struct mt_device
*td
)
654 __s32 quirks
= td
->mtclass
.quirks
;
656 /* unknown serial device needs special quirks */
657 if (td
->touches_by_report
== 1) {
658 quirks
|= MT_QUIRK_ALWAYS_VALID
;
659 quirks
&= ~MT_QUIRK_NOT_SEEN_MEANS_UP
;
660 quirks
&= ~MT_QUIRK_VALID_IS_INRANGE
;
661 quirks
&= ~MT_QUIRK_VALID_IS_CONFIDENCE
;
664 td
->mtclass
.quirks
= quirks
;
667 static void mt_post_parse(struct mt_device
*td
)
669 struct mt_fields
*f
= td
->fields
;
671 if (td
->touches_by_report
> 0) {
672 int field_count_per_touch
= f
->length
/ td
->touches_by_report
;
673 td
->last_slot_field
= f
->usages
[field_count_per_touch
- 1];
677 static int mt_probe(struct hid_device
*hdev
, const struct hid_device_id
*id
)
680 struct mt_device
*td
;
681 struct mt_class
*mtclass
= mt_classes
; /* MT_CLS_DEFAULT */
684 for (i
= 0; mt_classes
[i
].name
; i
++) {
685 if (id
->driver_data
== mt_classes
[i
].name
) {
686 mtclass
= &(mt_classes
[i
]);
692 /* This allows the driver to correctly support devices
693 * that emit events over several HID messages.
695 hdev
->quirks
|= HID_QUIRK_NO_INPUT_SYNC
;
697 td
= kzalloc(sizeof(struct mt_device
), GFP_KERNEL
);
699 dev_err(&hdev
->dev
, "cannot allocate multitouch data\n");
702 td
->mtclass
= *mtclass
;
704 td
->maxcontact_report_id
= -1;
705 hid_set_drvdata(hdev
, td
);
707 td
->fields
= kzalloc(sizeof(struct mt_fields
), GFP_KERNEL
);
709 dev_err(&hdev
->dev
, "cannot allocate multitouch fields data\n");
714 ret
= hid_parse(hdev
);
718 ret
= hid_hw_start(hdev
, HID_CONNECT_DEFAULT
);
724 if (id
->vendor
== HID_ANY_ID
&& id
->product
== HID_ANY_ID
)
725 mt_post_parse_default_settings(td
);
727 td
->slots
= kzalloc(td
->maxcontacts
* sizeof(struct mt_slot
),
730 dev_err(&hdev
->dev
, "cannot allocate multitouch slots\n");
736 ret
= sysfs_create_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
738 mt_set_maxcontacts(hdev
);
739 mt_set_input_mode(hdev
);
753 static int mt_reset_resume(struct hid_device
*hdev
)
755 mt_set_maxcontacts(hdev
);
756 mt_set_input_mode(hdev
);
761 static void mt_remove(struct hid_device
*hdev
)
763 struct mt_device
*td
= hid_get_drvdata(hdev
);
764 sysfs_remove_group(&hdev
->dev
.kobj
, &mt_attribute_group
);
768 hid_set_drvdata(hdev
, NULL
);
771 static const struct hid_device_id mt_devices
[] = {
774 { .driver_data
= MT_CLS_3M
,
775 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
776 USB_DEVICE_ID_3M1968
) },
777 { .driver_data
= MT_CLS_3M
,
778 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
779 USB_DEVICE_ID_3M2256
) },
780 { .driver_data
= MT_CLS_3M
,
781 MT_USB_DEVICE(USB_VENDOR_ID_3M
,
782 USB_DEVICE_ID_3M3266
) },
784 /* ActionStar panels */
785 { .driver_data
= MT_CLS_DEFAULT
,
786 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR
,
787 USB_DEVICE_ID_ACTIONSTAR_1011
) },
790 { .driver_data
= MT_CLS_SERIAL
,
791 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL
,
792 USB_DEVICE_ID_ATMEL_MULTITOUCH
) },
793 { .driver_data
= MT_CLS_SERIAL
,
794 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL
,
795 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER
) },
797 /* Baanto multitouch devices */
798 { .driver_data
= MT_CLS_DEFAULT
,
799 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO
,
800 USB_DEVICE_ID_BAANTO_MT_190W2
) },
802 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
803 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
804 USB_DEVICE_ID_CANDO_MULTI_TOUCH
) },
805 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
806 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
807 USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1
) },
808 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
809 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
810 USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6
) },
811 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
812 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
813 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6
) },
815 /* Chunghwa Telecom touch panels */
816 { .driver_data
= MT_CLS_DEFAULT
,
817 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT
,
818 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH
) },
821 { .driver_data
= MT_CLS_DEFAULT
,
822 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH
,
823 USB_DEVICE_ID_CVTOUCH_SCREEN
) },
826 { .driver_data
= MT_CLS_CYPRESS
,
827 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS
,
828 USB_DEVICE_ID_CYPRESS_TRUETOUCH
) },
830 /* eGalax devices (resistive) */
831 { .driver_data
= MT_CLS_EGALAX
,
832 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
833 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D
) },
834 { .driver_data
= MT_CLS_EGALAX
,
835 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
836 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E
) },
838 /* eGalax devices (capacitive) */
839 { .driver_data
= MT_CLS_EGALAX
,
840 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
841 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C
) },
842 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
843 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
844 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207
) },
845 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
846 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
847 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E
) },
848 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
849 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
850 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224
) },
851 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
852 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
853 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A
) },
854 { .driver_data
= MT_CLS_EGALAX
,
855 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
856 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B
) },
857 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
858 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
859 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262
) },
860 { .driver_data
= MT_CLS_EGALAX
,
861 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
862 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1
) },
863 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
864 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
865 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA
) },
866 { .driver_data
= MT_CLS_EGALAX
,
867 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
868 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA
) },
869 { .driver_data
= MT_CLS_EGALAX
,
870 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
871 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302
) },
872 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
873 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
874 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349
) },
875 { .driver_data
= MT_CLS_EGALAX_SERIAL
,
876 MT_USB_DEVICE(USB_VENDOR_ID_DWAV
,
877 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001
) },
879 /* Elo TouchSystems IntelliTouch Plus panel */
880 { .driver_data
= MT_CLS_DUAL_NSMU_CONTACTID
,
881 MT_USB_DEVICE(USB_VENDOR_ID_ELO
,
882 USB_DEVICE_ID_ELO_TS2515
) },
884 /* GeneralTouch panel */
885 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTNUMBER
,
886 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH
,
887 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS
) },
889 /* Gametel game controller */
890 { .driver_data
= MT_CLS_DEFAULT
,
891 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL
,
892 USB_DEVICE_ID_GAMETEL_MT_MODE
) },
894 /* GoodTouch panels */
895 { .driver_data
= MT_CLS_DEFAULT
,
896 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH
,
897 USB_DEVICE_ID_GOODTOUCH_000f
) },
900 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
901 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT
,
902 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH
) },
905 { .driver_data
= MT_CLS_SERIAL
,
906 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM
,
907 USB_DEVICE_ID_IDEACOM_IDC6650
) },
908 { .driver_data
= MT_CLS_SERIAL
,
909 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM
,
910 USB_DEVICE_ID_IDEACOM_IDC6651
) },
912 /* Ilitek dual touch panel */
913 { .driver_data
= MT_CLS_DEFAULT
,
914 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK
,
915 USB_DEVICE_ID_ILITEK_MULTITOUCH
) },
918 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
919 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS
,
920 USB_DEVICE_ID_IRTOUCH_INFRARED_USB
) },
922 /* LG Display panels */
923 { .driver_data
= MT_CLS_DEFAULT
,
924 MT_USB_DEVICE(USB_VENDOR_ID_LG
,
925 USB_DEVICE_ID_LG_MULTITOUCH
) },
928 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
929 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO
,
930 USB_DEVICE_ID_CRYSTALTOUCH
) },
931 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
932 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO
,
933 USB_DEVICE_ID_CRYSTALTOUCH_DUAL
) },
936 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
937 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
938 USB_DEVICE_ID_ASUS_T91MT
)},
939 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
940 MT_USB_DEVICE(USB_VENDOR_ID_ASUS
,
941 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO
) },
942 { .driver_data
= MT_CLS_CONFIDENCE_MINUS_ONE
,
943 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX
,
944 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART
) },
946 /* Panasonic panels */
947 { .driver_data
= MT_CLS_PANASONIC
,
948 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
949 USB_DEVICE_ID_PANABOARD_UBT780
) },
950 { .driver_data
= MT_CLS_PANASONIC
,
951 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC
,
952 USB_DEVICE_ID_PANABOARD_UBT880
) },
954 /* PenMount panels */
955 { .driver_data
= MT_CLS_CONFIDENCE
,
956 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT
,
957 USB_DEVICE_ID_PENMOUNT_PCI
) },
959 /* PixArt optical touch screen */
960 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
961 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
962 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN
) },
963 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
964 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
965 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1
) },
966 { .driver_data
= MT_CLS_INRANGE_CONTACTNUMBER
,
967 MT_USB_DEVICE(USB_VENDOR_ID_PIXART
,
968 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2
) },
970 /* PixCir-based panels */
971 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
972 MT_USB_DEVICE(USB_VENDOR_ID_HANVON
,
973 USB_DEVICE_ID_HANVON_MULTITOUCH
) },
974 { .driver_data
= MT_CLS_DUAL_INRANGE_CONTACTID
,
975 MT_USB_DEVICE(USB_VENDOR_ID_CANDO
,
976 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH
) },
978 /* Quanta-based panels */
979 { .driver_data
= MT_CLS_CONFIDENCE_CONTACT_ID
,
980 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA
,
981 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH
) },
982 { .driver_data
= MT_CLS_CONFIDENCE_CONTACT_ID
,
983 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA
,
984 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001
) },
985 { .driver_data
= MT_CLS_CONFIDENCE_CONTACT_ID
,
986 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA
,
987 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008
) },
990 { .driver_data
= MT_CLS_CONFIDENCE
,
991 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM
,
993 { .driver_data
= MT_CLS_CONFIDENCE
,
994 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM
,
995 USB_DEVICE_ID_MTP_STM
)},
996 { .driver_data
= MT_CLS_CONFIDENCE
,
997 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX
,
998 USB_DEVICE_ID_MTP_SITRONIX
)},
1000 /* TopSeed panels */
1001 { .driver_data
= MT_CLS_TOPSEED
,
1002 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2
,
1003 USB_DEVICE_ID_TOPSEED2_PERIPAD_701
) },
1005 /* Touch International panels */
1006 { .driver_data
= MT_CLS_DEFAULT
,
1007 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL
,
1008 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH
) },
1011 { .driver_data
= MT_CLS_DEFAULT
,
1012 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
1013 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709
) },
1014 { .driver_data
= MT_CLS_DEFAULT
,
1015 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC
,
1016 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19
) },
1018 { .driver_data
= MT_CLS_DEFAULT
,
1019 MT_USB_DEVICE(USB_VENDOR_ID_XAT
,
1020 USB_DEVICE_ID_XAT_CSR
) },
1023 { .driver_data
= MT_CLS_DEFAULT
,
1024 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1025 USB_DEVICE_ID_XIROKU_SPX
) },
1026 { .driver_data
= MT_CLS_DEFAULT
,
1027 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1028 USB_DEVICE_ID_XIROKU_MPX
) },
1029 { .driver_data
= MT_CLS_DEFAULT
,
1030 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1031 USB_DEVICE_ID_XIROKU_CSR
) },
1032 { .driver_data
= MT_CLS_DEFAULT
,
1033 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1034 USB_DEVICE_ID_XIROKU_SPX1
) },
1035 { .driver_data
= MT_CLS_DEFAULT
,
1036 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1037 USB_DEVICE_ID_XIROKU_MPX1
) },
1038 { .driver_data
= MT_CLS_DEFAULT
,
1039 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1040 USB_DEVICE_ID_XIROKU_CSR1
) },
1041 { .driver_data
= MT_CLS_DEFAULT
,
1042 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1043 USB_DEVICE_ID_XIROKU_SPX2
) },
1044 { .driver_data
= MT_CLS_DEFAULT
,
1045 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1046 USB_DEVICE_ID_XIROKU_MPX2
) },
1047 { .driver_data
= MT_CLS_DEFAULT
,
1048 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU
,
1049 USB_DEVICE_ID_XIROKU_CSR2
) },
1051 /* Generic MT device */
1052 { HID_DEVICE(HID_BUS_ANY
, HID_GROUP_MULTITOUCH
, HID_ANY_ID
, HID_ANY_ID
) },
1055 MODULE_DEVICE_TABLE(hid
, mt_devices
);
1057 static const struct hid_usage_id mt_grabbed_usages
[] = {
1058 { HID_ANY_ID
, HID_ANY_ID
, HID_ANY_ID
},
1059 { HID_ANY_ID
- 1, HID_ANY_ID
- 1, HID_ANY_ID
- 1}
1062 static struct hid_driver mt_driver
= {
1063 .name
= "hid-multitouch",
1064 .id_table
= mt_devices
,
1066 .remove
= mt_remove
,
1067 .input_mapping
= mt_input_mapping
,
1068 .input_mapped
= mt_input_mapped
,
1069 .feature_mapping
= mt_feature_mapping
,
1070 .usage_table
= mt_grabbed_usages
,
1073 .reset_resume
= mt_reset_resume
,
1077 static int __init
mt_init(void)
1079 return hid_register_driver(&mt_driver
);
1082 static void __exit
mt_exit(void)
1084 hid_unregister_driver(&mt_driver
);
1087 module_init(mt_init
);
1088 module_exit(mt_exit
);