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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[linux-2.6-block.git] / drivers / hid / hid-multitouch.c
CommitLineData
5519cab4
BT		 1/*
2 * HID driver for multitouch panels
3 *
c2ef8f21 4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
b0a78681 5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
c2ef8f21 6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
b0a78681 7 * Copyright (c) 2012-2013 Red Hat, Inc
5519cab4 8 *
4875ac11
RN		 9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
f786bba4
BT		 15 * This code is partly based on hid-3m-pct.c:
16 *
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.
20 *
5519cab4
BT		 21 */
22
23/*
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)
27 * any later version.
28 */
29
b0a78681
BT		 30/*
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.
35 *
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
39 */
40
5519cab4
BT		 41#include <linux/device.h>
42#include <linux/hid.h>
43#include <linux/module.h>
44#include <linux/slab.h>
5519cab4 45#include <linux/input/mt.h>
49a5a827 46#include <linux/string.h>
5519cab4
BT		 47
48
49MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
ef2fafb3 50MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
5519cab4
BT		 51MODULE_DESCRIPTION("HID multitouch panels");
52MODULE_LICENSE("GPL");
53
54#include "hid-ids.h"
55
56/* quirks to control the device */
57#define MT_QUIRK_NOT_SEEN_MEANS_UP (1 << 0)
58#define MT_QUIRK_SLOT_IS_CONTACTID (1 << 1)
2d93666e 59#define MT_QUIRK_CYPRESS (1 << 2)
5572da08 60#define MT_QUIRK_SLOT_IS_CONTACTNUMBER (1 << 3)
a062cc5a
SC		 61#define MT_QUIRK_ALWAYS_VALID (1 << 4)
62#define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
63#define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
a062cc5a 64#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
77723e3b 65#define MT_QUIRK_NO_AREA (1 << 9)
28728399 66#define MT_QUIRK_IGNORE_DUPLICATES (1 << 10)
9b3bb9b8 67#define MT_QUIRK_HOVERING (1 << 11)
c2517f62 68#define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12)
da10bc25 69#define MT_QUIRK_FORCE_GET_FEATURE (1 << 13)
5519cab4 70
9abebedb
AD		 71#define MT_INPUTMODE_TOUCHSCREEN 0x02
72#define MT_INPUTMODE_TOUCHPAD 0x03
73
2c6e0277
SF		 74#define MT_BUTTONTYPE_CLICKPAD 0
75
5519cab4 76struct mt_slot {
349fd670 77 __s32 x, y, cx, cy, p, w, h;
5519cab4
BT		 78 __s32 contactid; /* the device ContactID assigned to this slot */
79 bool touch_state; /* is the touch valid? */
9b3bb9b8 80 bool inrange_state; /* is the finger in proximity of the sensor? */
5519cab4
BT		 81};
82
eec29e3d
BT		 83struct mt_class {
84 __s32 name; /* MT_CLS */
85 __s32 quirks;
86 __s32 sn_move; /* Signal/noise ratio for move events */
87 __s32 sn_width; /* Signal/noise ratio for width events */
88 __s32 sn_height; /* Signal/noise ratio for height events */
89 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
90 __u8 maxcontacts;
c2ef8f21 91 bool is_indirect; /* true for touchpads */
6aef704e 92 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
eec29e3d
BT		 93};
94
3ac36d15
BT		 95struct mt_fields {
96 unsigned usages[HID_MAX_FIELDS];
97 unsigned int length;
98};
99
5519cab4
BT		 100struct mt_device {
101 struct mt_slot curdata; /* placeholder of incoming data */
eec29e3d 102 struct mt_class mtclass; /* our mt device class */
3ac36d15
BT		 103 struct mt_fields *fields; /* temporary placeholder for storing the
104 multitouch fields */
7e3cc447
BT		 105 int cc_index; /* contact count field index in the report */
106 int cc_value_index; /* contact count value index in the field */
5519cab4 107 unsigned last_slot_field; /* the last field of a slot */
55978fa9 108 unsigned mt_report_id; /* the report ID of the multitouch device */
8821f5dc
BT		 109 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
110 __s16 inputmode_index; /* InputMode HID feature index in the report */
111 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
31ae9bdd 112 -1 if non-existent */
9abebedb 113 __u8 inputmode_value; /* InputMode HID feature value */
5519cab4
BT		 114 __u8 num_received; /* how many contacts we received */
115 __u8 num_expected; /* expected last contact index */
9498f954 116 __u8 maxcontacts;
9e87f22a
BT		 117 __u8 touches_by_report; /* how many touches are present in one report:
118 * 1 means we should use a serial protocol
119 * > 1 means hybrid (multitouch) protocol */
015fdaa9 120 __u8 buttons_count; /* number of physical buttons per touchpad */
2c6e0277 121 bool is_buttonpad; /* is this device a button pad? */
76f5902a 122 bool serial_maybe; /* need to check for serial protocol */
5519cab4 123 bool curvalid; /* is the current contact valid? */
76f5902a 124 unsigned mt_flags; /* flags to pass to input-mt */
5519cab4
BT		 125};
126
a69c5f8b
BT		 127static void mt_post_parse_default_settings(struct mt_device *td);
128static void mt_post_parse(struct mt_device *td);
129
5519cab4 130/* classes of device behavior */
22408283
BT		 131#define MT_CLS_DEFAULT 0x0001
132
a062cc5a
SC		 133#define MT_CLS_SERIAL 0x0002
134#define MT_CLS_CONFIDENCE 0x0003
5e7ea11f
BT		 135#define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
136#define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
137#define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
138#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
0fa9c616 139/* reserved 0x0008 */
b7ea95ff 140#define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
dc3e1d80 141#define MT_CLS_NSMU 0x000a
0fa9c616
BT		 142/* reserved 0x0010 */
143/* reserved 0x0011 */
f961bd35 144#define MT_CLS_WIN_8 0x0012
6aef704e 145#define MT_CLS_EXPORT_ALL_INPUTS 0x0013
22408283
BT		 146
147/* vendor specific classes */
148#define MT_CLS_3M 0x0101
0fa9c616 149/* reserved 0x0102 */
22408283 150#define MT_CLS_EGALAX 0x0103
1b723e8d 151#define MT_CLS_EGALAX_SERIAL 0x0104
847672cd 152#define MT_CLS_TOPSEED 0x0105
2258e863 153#define MT_CLS_PANASONIC 0x0106
77723e3b 154#define MT_CLS_FLATFROG 0x0107
cdcd3ac4
JK		 155#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
156#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
da10bc25 157#define MT_CLS_VTL 0x0110
5519cab4 158
9498f954 159#define MT_DEFAULT_MAXCONTACT 10
afbcb04c 160#define MT_MAX_MAXCONTACT 250
9498f954 161
2c2110e9
HR		 162#define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
163#define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
164
5519cab4
BT		 165/*
166 * these device-dependent functions determine what slot corresponds
167 * to a valid contact that was just read.
168 */
169
a3b5e577
BT		 170static int cypress_compute_slot(struct mt_device *td)
171{
172 if (td->curdata.contactid != 0 || td->num_received == 0)
173 return td->curdata.contactid;
174 else
175 return -1;
176}
177
b3c21d2c 178static struct mt_class mt_classes[] = {
2d93666e 179 { .name = MT_CLS_DEFAULT,
dc3e1d80
BT		 180 .quirks = MT_QUIRK_ALWAYS_VALID |
181 MT_QUIRK_CONTACT_CNT_ACCURATE },
182 { .name = MT_CLS_NSMU,
9498f954 183 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
a062cc5a
SC		 184 { .name = MT_CLS_SERIAL,
185 .quirks = MT_QUIRK_ALWAYS_VALID},
22408283
BT		 186 { .name = MT_CLS_CONFIDENCE,
187 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
5e7ea11f
BT		 188 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
189 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
190 MT_QUIRK_SLOT_IS_CONTACTID },
22408283
BT		 191 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
192 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
193 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
1e9cf35b 194 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
2d93666e
BT		 195 .quirks = MT_QUIRK_VALID_IS_INRANGE |
196 MT_QUIRK_SLOT_IS_CONTACTID,
197 .maxcontacts = 2 },
1e9cf35b 198 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2d93666e
BT		 199 .quirks = MT_QUIRK_VALID_IS_INRANGE |
200 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
201 .maxcontacts = 2 },
b7ea95ff
AT		 202 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
203 .quirks = MT_QUIRK_VALID_IS_INRANGE |
204 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
f961bd35
BT		 205 { .name = MT_CLS_WIN_8,
206 .quirks = MT_QUIRK_ALWAYS_VALID |
207 MT_QUIRK_IGNORE_DUPLICATES |
208 MT_QUIRK_HOVERING |
209 MT_QUIRK_CONTACT_CNT_ACCURATE },
6aef704e
BT		 210 { .name = MT_CLS_EXPORT_ALL_INPUTS,
211 .quirks = MT_QUIRK_ALWAYS_VALID |
212 MT_QUIRK_CONTACT_CNT_ACCURATE,
213 .export_all_inputs = true },
22408283
BT		 214
215 /*
216 * vendor specific classes
217 */
218 { .name = MT_CLS_3M,
219 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
220 MT_QUIRK_SLOT_IS_CONTACTID,
221 .sn_move = 2048,
222 .sn_width = 128,
c5d40be5
HR		 223 .sn_height = 128,
224 .maxcontacts = 60,
225 },
4875ac11
RN		 226 { .name = MT_CLS_EGALAX,
227 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
2261bb9f 228 MT_QUIRK_VALID_IS_INRANGE,
4875ac11
RN		 229 .sn_move = 4096,
230 .sn_pressure = 32,
231 },
1b723e8d
BT		 232 { .name = MT_CLS_EGALAX_SERIAL,
233 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
234 MT_QUIRK_ALWAYS_VALID,
4875ac11
RN		 235 .sn_move = 4096,
236 .sn_pressure = 32,
237 },
847672cd
BT		 238 { .name = MT_CLS_TOPSEED,
239 .quirks = MT_QUIRK_ALWAYS_VALID,
240 .is_indirect = true,
241 .maxcontacts = 2,
242 },
2258e863
DK		 243 { .name = MT_CLS_PANASONIC,
244 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
245 .maxcontacts = 4 },
f5ff4e1e
XY		 246 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
247 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
248 MT_QUIRK_VALID_IS_INRANGE |
7b226292 249 MT_QUIRK_SLOT_IS_CONTACTID,
f5ff4e1e
XY		 250 .maxcontacts = 2
251 },
252 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
253 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
7b226292 254 MT_QUIRK_SLOT_IS_CONTACTID
f5ff4e1e 255 },
043b403a 256
77723e3b
HR		 257 { .name = MT_CLS_FLATFROG,
258 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
259 MT_QUIRK_NO_AREA,
260 .sn_move = 2048,
261 .maxcontacts = 40,
262 },
da10bc25
MM		 263 { .name = MT_CLS_VTL,
264 .quirks = MT_QUIRK_ALWAYS_VALID |
265 MT_QUIRK_CONTACT_CNT_ACCURATE |
266 MT_QUIRK_FORCE_GET_FEATURE,
267 },
2d93666e 268 { }
5519cab4
BT		 269};
270
eec29e3d
BT		 271static ssize_t mt_show_quirks(struct device *dev,
272 struct device_attribute *attr,
273 char *buf)
274{
275 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
276 struct mt_device *td = hid_get_drvdata(hdev);
277
278 return sprintf(buf, "%u\n", td->mtclass.quirks);
279}
280
281static ssize_t mt_set_quirks(struct device *dev,
282 struct device_attribute *attr,
283 const char *buf, size_t count)
284{
285 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
286 struct mt_device *td = hid_get_drvdata(hdev);
287
288 unsigned long val;
289
290 if (kstrtoul(buf, 0, &val))
291 return -EINVAL;
292
293 td->mtclass.quirks = val;
294
7e3cc447 295 if (td->cc_index < 0)
c2517f62
BT		 296 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
297
eec29e3d
BT		 298 return count;
299}
300
301static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
302
303static struct attribute *sysfs_attrs[] = {
304 &dev_attr_quirks.attr,
305 NULL
306};
307
308static struct attribute_group mt_attribute_group = {
309 .attrs = sysfs_attrs
310};
311
f635bd11 312static void mt_feature_mapping(struct hid_device *hdev,
5519cab4
BT		 313 struct hid_field *field, struct hid_usage *usage)
314{
9498f954
BT		 315 struct mt_device *td = hid_get_drvdata(hdev);
316
317 switch (usage->hid) {
318 case HID_DG_INPUTMODE:
8821f5dc
BT		 319 /* Ignore if value index is out of bounds. */
320 if (usage->usage_index >= field->report_count) {
321 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
322 break;
4aceed37
BT		 323 }
324
8821f5dc
BT		 325 td->inputmode = field->report->id;
326 td->inputmode_index = usage->usage_index;
327
9498f954
BT		 328 break;
329 case HID_DG_CONTACTMAX:
31ae9bdd 330 td->maxcontact_report_id = field->report->id;
9498f954 331 td->maxcontacts = field->value[0];
afbcb04c
BT		 332 if (!td->maxcontacts &&
333 field->logical_maximum <= MT_MAX_MAXCONTACT)
334 td->maxcontacts = field->logical_maximum;
eec29e3d 335 if (td->mtclass.maxcontacts)
9498f954 336 /* check if the maxcontacts is given by the class */
eec29e3d 337 td->maxcontacts = td->mtclass.maxcontacts;
9498f954 338
2c6e0277
SF		 339 break;
340 case HID_DG_BUTTONTYPE:
341 if (usage->usage_index >= field->report_count) {
342 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
343 break;
344 }
345
346 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
347 td->is_buttonpad = true;
348
9498f954 349 break;
5519cab4
BT		 350 }
351}
352
353static void set_abs(struct input_dev *input, unsigned int code,
354 struct hid_field *field, int snratio)
355{
356 int fmin = field->logical_minimum;
357 int fmax = field->logical_maximum;
358 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
359 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
37cf6e6f 360 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
5519cab4
BT		 361}
362
3ac36d15 363static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
ed9d5c96
BT		 364 struct hid_input *hi)
365{
3ac36d15
BT		 366 struct mt_fields *f = td->fields;
367
368 if (f->length >= HID_MAX_FIELDS)
369 return;
370
371 f->usages[f->length++] = usage->hid;
ed9d5c96
BT		 372}
373
a69c5f8b 374static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
5519cab4
BT		 375 struct hid_field *field, struct hid_usage *usage,
376 unsigned long **bit, int *max)
377{
378 struct mt_device *td = hid_get_drvdata(hdev);
eec29e3d 379 struct mt_class *cls = &td->mtclass;
c2ef8f21 380 int code;
349fd670 381 struct hid_usage *prev_usage = NULL;
4875ac11 382
658d4aed 383 if (field->application == HID_DG_TOUCHSCREEN)
76f5902a 384 td->mt_flags |= INPUT_MT_DIRECT;
658d4aed 385
76f5902a
HR		 386 /*
387 * Model touchscreens providing buttons as touchpads.
c2ef8f21
BT		 388 */
389 if (field->application == HID_DG_TOUCHPAD ||
9abebedb 390 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
76f5902a 391 td->mt_flags |= INPUT_MT_POINTER;
9abebedb
AD		 392 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
393 }
c2ef8f21 394
015fdaa9
BT		 395 /* count the buttons on touchpads */
396 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
397 td->buttons_count++;
398
349fd670
BT		 399 if (usage->usage_index)
400 prev_usage = &field->usage[usage->usage_index - 1];
401
5519cab4
BT		 402 switch (usage->hid & HID_USAGE_PAGE) {
403
404 case HID_UP_GENDESK:
405 switch (usage->hid) {
406 case HID_GD_X:
349fd670
BT		 407 if (prev_usage && (prev_usage->hid == usage->hid)) {
408 hid_map_usage(hi, usage, bit, max,
409 EV_ABS, ABS_MT_TOOL_X);
410 set_abs(hi->input, ABS_MT_TOOL_X, field,
411 cls->sn_move);
412 } else {
413 hid_map_usage(hi, usage, bit, max,
5519cab4 414 EV_ABS, ABS_MT_POSITION_X);
349fd670
BT		 415 set_abs(hi->input, ABS_MT_POSITION_X, field,
416 cls->sn_move);
417 }
418
3ac36d15 419 mt_store_field(usage, td, hi);
5519cab4
BT		 420 return 1;
421 case HID_GD_Y:
349fd670
BT		 422 if (prev_usage && (prev_usage->hid == usage->hid)) {
423 hid_map_usage(hi, usage, bit, max,
424 EV_ABS, ABS_MT_TOOL_Y);
425 set_abs(hi->input, ABS_MT_TOOL_Y, field,
426 cls->sn_move);
427 } else {
428 hid_map_usage(hi, usage, bit, max,
5519cab4 429 EV_ABS, ABS_MT_POSITION_Y);
349fd670
BT		 430 set_abs(hi->input, ABS_MT_POSITION_Y, field,
431 cls->sn_move);
432 }
433
3ac36d15 434 mt_store_field(usage, td, hi);
5519cab4
BT		 435 return 1;
436 }
437 return 0;
438
439 case HID_UP_DIGITIZER:
440 switch (usage->hid) {
441 case HID_DG_INRANGE:
9b3bb9b8
BT		 442 if (cls->quirks & MT_QUIRK_HOVERING) {
443 hid_map_usage(hi, usage, bit, max,
444 EV_ABS, ABS_MT_DISTANCE);
445 input_set_abs_params(hi->input,
446 ABS_MT_DISTANCE, 0, 1, 0, 0);
447 }
3ac36d15 448 mt_store_field(usage, td, hi);
5519cab4
BT		 449 return 1;
450 case HID_DG_CONFIDENCE:
3ac36d15 451 mt_store_field(usage, td, hi);
5519cab4
BT		 452 return 1;
453 case HID_DG_TIPSWITCH:
454 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
455 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
3ac36d15 456 mt_store_field(usage, td, hi);
5519cab4
BT		 457 return 1;
458 case HID_DG_CONTACTID:
3ac36d15 459 mt_store_field(usage, td, hi);
9e87f22a 460 td->touches_by_report++;
55978fa9 461 td->mt_report_id = field->report->id;
5519cab4
BT		 462 return 1;
463 case HID_DG_WIDTH:
464 hid_map_usage(hi, usage, bit, max,
465 EV_ABS, ABS_MT_TOUCH_MAJOR);
77723e3b
HR		 466 if (!(cls->quirks & MT_QUIRK_NO_AREA))
467 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
468 cls->sn_width);
3ac36d15 469 mt_store_field(usage, td, hi);
5519cab4
BT		 470 return 1;
471 case HID_DG_HEIGHT:
472 hid_map_usage(hi, usage, bit, max,
473 EV_ABS, ABS_MT_TOUCH_MINOR);
77723e3b
HR		 474 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
475 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
476 cls->sn_height);
477 input_set_abs_params(hi->input,
1e648a13 478 ABS_MT_ORIENTATION, 0, 1, 0, 0);
77723e3b 479 }
3ac36d15 480 mt_store_field(usage, td, hi);
5519cab4
BT		 481 return 1;
482 case HID_DG_TIPPRESSURE:
483 hid_map_usage(hi, usage, bit, max,
484 EV_ABS, ABS_MT_PRESSURE);
485 set_abs(hi->input, ABS_MT_PRESSURE, field,
486 cls->sn_pressure);
3ac36d15 487 mt_store_field(usage, td, hi);
5519cab4
BT		 488 return 1;
489 case HID_DG_CONTACTCOUNT:
8821f5dc
BT		 490 /* Ignore if indexes are out of bounds. */
491 if (field->index >= field->report->maxfield ||
492 usage->usage_index >= field->report_count)
493 return 1;
7e3cc447
BT		 494 td->cc_index = field->index;
495 td->cc_value_index = usage->usage_index;
5519cab4
BT		 496 return 1;
497 case HID_DG_CONTACTMAX:
498 /* we don't set td->last_slot_field as contactcount and
499 * contact max are global to the report */
500 return -1;
c2ef8f21
BT		 501 case HID_DG_TOUCH:
502 /* Legacy devices use TIPSWITCH and not TOUCH.
503 * Let's just ignore this field. */
504 return -1;
65b258e9 505 }
5519cab4
BT		 506 /* let hid-input decide for the others */
507 return 0;
508
c2ef8f21
BT		 509 case HID_UP_BUTTON:
510 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
511 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
512 input_set_capability(hi->input, EV_KEY, code);
513 return 1;
514
5519cab4
BT		 515 case 0xff000000:
516 /* we do not want to map these: no input-oriented meaning */
517 return -1;
518 }
519
520 return 0;
521}
522
a69c5f8b 523static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
5519cab4
BT		 524 struct hid_field *field, struct hid_usage *usage,
525 unsigned long **bit, int *max)
526{
527 if (usage->type == EV_KEY || usage->type == EV_ABS)
528 set_bit(usage->type, hi->input->evbit);
529
530 return -1;
531}
532
3e1b5015 533static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
5519cab4 534{
eec29e3d 535 __s32 quirks = td->mtclass.quirks;
5519cab4 536
2d93666e
BT		 537 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
538 return td->curdata.contactid;
5519cab4 539
2d93666e 540 if (quirks & MT_QUIRK_CYPRESS)
a3b5e577
BT		 541 return cypress_compute_slot(td);
542
2d93666e
BT		 543 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
544 return td->num_received;
5572da08 545
4a6ee685
BT		 546 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
547 return td->curdata.contactid - 1;
548
3e1b5015 549 return input_mt_get_slot_by_key(input, td->curdata.contactid);
5519cab4
BT		 550}
551
552/*
553 * this function is called when a whole contact has been processed,
554 * so that it can assign it to a slot and store the data there
555 */
3e1b5015 556static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
5519cab4 557{
c2517f62
BT		 558 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
559 td->num_received >= td->num_expected)
560 return;
561
20b60e6d 562 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
3e1b5015
HR		 563 int slotnum = mt_compute_slot(td, input);
564 struct mt_slot *s = &td->curdata;
28728399 565 struct input_mt *mt = input->mt;
5519cab4 566
3e1b5015
HR		 567 if (slotnum < 0 || slotnum >= td->maxcontacts)
568 return;
5519cab4 569
28728399
BT		 570 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
571 struct input_mt_slot *slot = &mt->slots[slotnum];
572 if (input_mt_is_active(slot) &&
573 input_mt_is_used(mt, slot))
574 return;
575 }
576
3e1b5015 577 input_mt_slot(input, slotnum);
5519cab4 578 input_mt_report_slot_state(input, MT_TOOL_FINGER,
9b3bb9b8
BT		 579 s->touch_state || s->inrange_state);
580 if (s->touch_state || s->inrange_state) {
581 /* this finger is in proximity of the sensor */
f786bba4
BT		 582 int wide = (s->w > s->h);
583 /* divided by two to match visual scale of touch */
584 int major = max(s->w, s->h) >> 1;
585 int minor = min(s->w, s->h) >> 1;
586
2d93666e
BT		 587 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
588 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
349fd670
BT		 589 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
590 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
9b3bb9b8
BT		 591 input_event(input, EV_ABS, ABS_MT_DISTANCE,
592 !s->touch_state);
f786bba4 593 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
2d93666e 594 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
f786bba4
BT		 595 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
596 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
2d93666e 597 }
5519cab4
BT		 598 }
599
3e1b5015
HR		 600 td->num_received++;
601}
602
603/*
604 * this function is called when a whole packet has been received and processed,
605 * so that it can decide what to send to the input layer.
606 */
607static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
608{
76f5902a 609 input_mt_sync_frame(input);
5519cab4
BT		 610 input_sync(input);
611 td->num_received = 0;
612}
613
a69c5f8b 614static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
5519cab4 615 struct hid_usage *usage, __s32 value)
55978fa9
BT		 616{
617 /* we will handle the hidinput part later, now remains hiddev */
618 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
619 hid->hiddev_hid_event(hid, field, usage, value);
620
621 return 1;
622}
623
624static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
625 struct hid_usage *usage, __s32 value)
5519cab4
BT		 626{
627 struct mt_device *td = hid_get_drvdata(hid);
eec29e3d 628 __s32 quirks = td->mtclass.quirks;
4c437555 629 struct input_dev *input = field->hidinput->input;
5519cab4 630
3e1b5015 631 if (hid->claimed & HID_CLAIMED_INPUT) {
5519cab4
BT		 632 switch (usage->hid) {
633 case HID_DG_INRANGE:
20b60e6d 634 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
2d93666e 635 td->curvalid = value;
9b3bb9b8
BT		 636 if (quirks & MT_QUIRK_HOVERING)
637 td->curdata.inrange_state = value;
5519cab4
BT		 638 break;
639 case HID_DG_TIPSWITCH:
2d93666e
BT		 640 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
641 td->curvalid = value;
5519cab4
BT		 642 td->curdata.touch_state = value;
643 break;
644 case HID_DG_CONFIDENCE:
2d93666e
BT		 645 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
646 td->curvalid = value;
5519cab4
BT		 647 break;
648 case HID_DG_CONTACTID:
649 td->curdata.contactid = value;
650 break;
651 case HID_DG_TIPPRESSURE:
652 td->curdata.p = value;
653 break;
654 case HID_GD_X:
349fd670
BT		 655 if (usage->code == ABS_MT_TOOL_X)
656 td->curdata.cx = value;
657 else
658 td->curdata.x = value;
5519cab4
BT		 659 break;
660 case HID_GD_Y:
349fd670
BT		 661 if (usage->code == ABS_MT_TOOL_Y)
662 td->curdata.cy = value;
663 else
664 td->curdata.y = value;
5519cab4
BT		 665 break;
666 case HID_DG_WIDTH:
667 td->curdata.w = value;
668 break;
669 case HID_DG_HEIGHT:
670 td->curdata.h = value;
671 break;
672 case HID_DG_CONTACTCOUNT:
5519cab4 673 break;
c2ef8f21
BT		 674 case HID_DG_TOUCH:
675 /* do nothing */
676 break;
5519cab4
BT		 677
678 default:
4c437555
BT		 679 if (usage->type)
680 input_event(input, usage->type, usage->code,
681 value);
55978fa9 682 return;
5519cab4 683 }
5519cab4 684
54f4c0c3
BT		 685 if (usage->usage_index + 1 == field->report_count) {
686 /* we only take into account the last report. */
687 if (usage->hid == td->last_slot_field)
688 mt_complete_slot(td, field->hidinput->input);
54f4c0c3 689 }
5519cab4 690
2d93666e 691 }
55978fa9 692}
5519cab4 693
a69c5f8b 694static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
55978fa9
BT		 695{
696 struct mt_device *td = hid_get_drvdata(hid);
697 struct hid_field *field;
698 unsigned count;
699 int r, n;
5519cab4 700
c2517f62
BT		 701 /*
702 * Includes multi-packet support where subsequent
703 * packets are sent with zero contactcount.
704 */
7e3cc447
BT		 705 if (td->cc_index >= 0) {
706 struct hid_field *field = report->field[td->cc_index];
707 int value = field->value[td->cc_value_index];
708 if (value)
709 td->num_expected = value;
710 }
c2517f62 711
55978fa9
BT		 712 for (r = 0; r < report->maxfield; r++) {
713 field = report->field[r];
714 count = field->report_count;
715
716 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
717 continue;
718
719 for (n = 0; n < count; n++)
720 mt_process_mt_event(hid, field, &field->usage[n],
721 field->value[n]);
722 }
5b62efd8
BT		 723
724 if (td->num_received >= td->num_expected)
725 mt_sync_frame(td, report->field[0]->hidinput->input);
5519cab4
BT		 726}
727
a69c5f8b
BT		 728static void mt_touch_input_configured(struct hid_device *hdev,
729 struct hid_input *hi)
730{
731 struct mt_device *td = hid_get_drvdata(hdev);
732 struct mt_class *cls = &td->mtclass;
733 struct input_dev *input = hi->input;
734
735 if (!td->maxcontacts)
736 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
737
738 mt_post_parse(td);
739 if (td->serial_maybe)
740 mt_post_parse_default_settings(td);
741
742 if (cls->is_indirect)
743 td->mt_flags |= INPUT_MT_POINTER;
744
745 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
746 td->mt_flags |= INPUT_MT_DROP_UNUSED;
747
015fdaa9
BT		 748 /* check for clickpads */
749 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
2c6e0277
SF		 750 td->is_buttonpad = true;
751
752 if (td->is_buttonpad)
015fdaa9
BT		 753 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
754
a69c5f8b
BT		 755 input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
756
757 td->mt_flags = 0;
758}
759
760static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
761 struct hid_field *field, struct hid_usage *usage,
762 unsigned long **bit, int *max)
763{
6aef704e
BT		 764 struct mt_device *td = hid_get_drvdata(hdev);
765
766 /*
767 * If mtclass.export_all_inputs is not set, only map fields from
768 * TouchScreen or TouchPad collections. We need to ignore fields
769 * that belong to other collections such as Mouse that might have
770 * the same GenericDesktop usages.
771 */
772 if (!td->mtclass.export_all_inputs &&
773 field->application != HID_DG_TOUCHSCREEN &&
fa11aa72 774 field->application != HID_DG_PEN &&
a69c5f8b 775 field->application != HID_DG_TOUCHPAD)
6f492f28 776 return -1;
a69c5f8b 777
6aef704e
BT		 778 /*
779 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
780 * for the stylus.
781 */
a69c5f8b 782 if (field->physical == HID_DG_STYLUS)
e55f6200 783 return 0;
a69c5f8b 784
6aef704e
BT		 785 if (field->application == HID_DG_TOUCHSCREEN ||
786 field->application == HID_DG_TOUCHPAD)
787 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
788
789 /* let hid-core decide for the others */
790 return 0;
a69c5f8b
BT		 791}
792
793static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
794 struct hid_field *field, struct hid_usage *usage,
795 unsigned long **bit, int *max)
796{
6aef704e
BT		 797 /*
798 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
799 * for the stylus.
800 */
fa11aa72 801 if (field->physical == HID_DG_STYLUS)
e55f6200 802 return 0;
fa11aa72 803
6aef704e
BT		 804 if (field->application == HID_DG_TOUCHSCREEN ||
805 field->application == HID_DG_TOUCHPAD)
806 return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
807
808 /* let hid-core decide for the others */
809 return 0;
a69c5f8b
BT		 810}
811
812static int mt_event(struct hid_device *hid, struct hid_field *field,
813 struct hid_usage *usage, __s32 value)
814{
815 struct mt_device *td = hid_get_drvdata(hid);
816
817 if (field->report->id == td->mt_report_id)
818 return mt_touch_event(hid, field, usage, value);
819
e55f6200 820 return 0;
a69c5f8b
BT		 821}
822
823static void mt_report(struct hid_device *hid, struct hid_report *report)
824{
825 struct mt_device *td = hid_get_drvdata(hid);
e55f6200 826 struct hid_field *field = report->field[0];
a69c5f8b
BT		 827
828 if (!(hid->claimed & HID_CLAIMED_INPUT))
829 return;
830
831 if (report->id == td->mt_report_id)
e55f6200 832 return mt_touch_report(hid, report);
fa11aa72 833
e55f6200
BT		 834 if (field && field->hidinput && field->hidinput->input)
835 input_sync(field->hidinput->input);
5519cab4
BT		 836}
837
838static void mt_set_input_mode(struct hid_device *hdev)
839{
840 struct mt_device *td = hid_get_drvdata(hdev);
841 struct hid_report *r;
842 struct hid_report_enum *re;
da10bc25
MM		 843 struct mt_class *cls = &td->mtclass;
844 char *buf;
845 int report_len;
5519cab4
BT		 846
847 if (td->inputmode < 0)
848 return;
849
850 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
851 r = re->report_id_hash[td->inputmode];
852 if (r) {
da10bc25 853 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
dabb05c6 854 report_len = hid_report_len(r);
da10bc25
MM		 855 buf = hid_alloc_report_buf(r, GFP_KERNEL);
856 if (!buf) {
857 hid_err(hdev, "failed to allocate buffer for report\n");
858 return;
859 }
860 hid_hw_raw_request(hdev, r->id, buf, report_len,
861 HID_FEATURE_REPORT,
862 HID_REQ_GET_REPORT);
863 kfree(buf);
864 }
9abebedb 865 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
d8814272 866 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
5519cab4
BT		 867 }
868}
869
31ae9bdd
BT		 870static void mt_set_maxcontacts(struct hid_device *hdev)
871{
872 struct mt_device *td = hid_get_drvdata(hdev);
873 struct hid_report *r;
874 struct hid_report_enum *re;
875 int fieldmax, max;
876
877 if (td->maxcontact_report_id < 0)
878 return;
879
880 if (!td->mtclass.maxcontacts)
881 return;
882
883 re = &hdev->report_enum[HID_FEATURE_REPORT];
884 r = re->report_id_hash[td->maxcontact_report_id];
885 if (r) {
886 max = td->mtclass.maxcontacts;
887 fieldmax = r->field[0]->logical_maximum;
888 max = min(fieldmax, max);
889 if (r->field[0]->value[0] != max) {
890 r->field[0]->value[0] = max;
d8814272 891 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
31ae9bdd
BT		 892 }
893 }
894}
895
4fa3a583
HR		 896static void mt_post_parse_default_settings(struct mt_device *td)
897{
898 __s32 quirks = td->mtclass.quirks;
899
900 /* unknown serial device needs special quirks */
901 if (td->touches_by_report == 1) {
902 quirks |= MT_QUIRK_ALWAYS_VALID;
903 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
904 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
905 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
e0bb8f9a 906 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
4fa3a583
HR		 907 }
908
909 td->mtclass.quirks = quirks;
910}
911
3ac36d15
BT		 912static void mt_post_parse(struct mt_device *td)
913{
914 struct mt_fields *f = td->fields;
c2517f62 915 struct mt_class *cls = &td->mtclass;
3ac36d15
BT		 916
917 if (td->touches_by_report > 0) {
918 int field_count_per_touch = f->length / td->touches_by_report;
919 td->last_slot_field = f->usages[field_count_per_touch - 1];
920 }
c2517f62 921
7e3cc447 922 if (td->cc_index < 0)
c2517f62 923 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
3ac36d15
BT		 924}
925
76f5902a 926static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
76f5902a
HR		 927{
928 struct mt_device *td = hid_get_drvdata(hdev);
c08d46aa
BT		 929 char *name;
930 const char *suffix = NULL;
6aef704e 931 struct hid_field *field = hi->report->field[0];
76f5902a 932
5b6498a1
BT		 933 if (hi->report->id == td->mt_report_id)
934 mt_touch_input_configured(hdev, hi);
76f5902a 935
6aef704e
BT		 936 /*
937 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
938 * for the stylus. Check this first, and then rely on the application
939 * field.
940 */
c08d46aa
BT		 941 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
942 suffix = "Pen";
e55f6200
BT		 943 /* force BTN_STYLUS to allow tablet matching in udev */
944 __set_bit(BTN_STYLUS, hi->input->keybit);
6aef704e
BT		 945 } else {
946 switch (field->application) {
947 case HID_GD_KEYBOARD:
948 suffix = "Keyboard";
949 break;
950 case HID_GD_KEYPAD:
951 suffix = "Keypad";
952 break;
953 case HID_GD_MOUSE:
954 suffix = "Mouse";
955 break;
956 case HID_DG_STYLUS:
957 suffix = "Pen";
958 /* force BTN_STYLUS to allow tablet matching in udev */
959 __set_bit(BTN_STYLUS, hi->input->keybit);
960 break;
961 case HID_DG_TOUCHSCREEN:
962 /* we do not set suffix = "Touchscreen" */
963 break;
964 case HID_GD_SYSTEM_CONTROL:
965 suffix = "System Control";
966 break;
967 case HID_CP_CONSUMER_CONTROL:
968 suffix = "Consumer Control";
969 break;
970 default:
971 suffix = "UNKNOWN";
972 break;
973 }
c08d46aa
BT		 974 }
975
976 if (suffix) {
977 name = devm_kzalloc(&hi->input->dev,
978 strlen(hdev->name) + strlen(suffix) + 2,
979 GFP_KERNEL);
980 if (name) {
981 sprintf(name, "%s %s", hdev->name, suffix);
982 hi->input->name = name;
983 }
984 }
76f5902a
HR		 985}
986
5519cab4
BT		 987static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
988{
2d93666e 989 int ret, i;
5519cab4 990 struct mt_device *td;
2d93666e
BT		 991 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
992
94b5485c
HR		 993 for (i = 0; mt_classes[i].name ; i++) {
994 if (id->driver_data == mt_classes[i].name) {
995 mtclass = &(mt_classes[i]);
996 break;
2d93666e
BT		 997 }
998 }
5519cab4 999
d682bd7f
HR		 1000 /* This allows the driver to correctly support devices
1001 * that emit events over several HID messages.
1002 */
1003 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
5519cab4 1004
fa11aa72
BT		 1005 /*
1006 * This allows the driver to handle different input sensors
1007 * that emits events through different reports on the same HID
1008 * device.
1009 */
1010 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1011 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1012
595e9276
BT		 1013 /*
1014 * Handle special quirks for Windows 8 certified devices.
1015 */
1016 if (id->group == HID_GROUP_MULTITOUCH_WIN_8)
1017 /*
1018 * Some multitouch screens do not like to be polled for input
1019 * reports. Fortunately, the Win8 spec says that all touches
1020 * should be sent during each report, making the initialization
1021 * of input reports unnecessary.
1022 */
1023 hdev->quirks |= HID_QUIRK_NO_INIT_INPUT_REPORTS;
1024
c08d46aa 1025 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
5519cab4
BT		 1026 if (!td) {
1027 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1028 return -ENOMEM;
1029 }
eec29e3d 1030 td->mtclass = *mtclass;
5519cab4 1031 td->inputmode = -1;
31ae9bdd 1032 td->maxcontact_report_id = -1;
9abebedb 1033 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
7e3cc447 1034 td->cc_index = -1;
fa11aa72 1035 td->mt_report_id = -1;
5519cab4
BT		 1036 hid_set_drvdata(hdev, td);
1037
c08d46aa
BT		 1038 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1039 GFP_KERNEL);
3ac36d15
BT		 1040 if (!td->fields) {
1041 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
c08d46aa 1042 return -ENOMEM;
3ac36d15
BT		 1043 }
1044
76f5902a
HR		 1045 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1046 td->serial_maybe = true;
1047
5519cab4
BT		 1048 ret = hid_parse(hdev);
1049 if (ret != 0)
c08d46aa 1050 return ret;
5519cab4
BT		 1051
1052 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2d93666e 1053 if (ret)
c08d46aa 1054 return ret;
5519cab4 1055
eec29e3d
BT		 1056 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1057
31ae9bdd 1058 mt_set_maxcontacts(hdev);
5519cab4
BT		 1059 mt_set_input_mode(hdev);
1060
c08d46aa
BT		 1061 /* release .fields memory as it is not used anymore */
1062 devm_kfree(&hdev->dev, td->fields);
3ac36d15
BT		 1063 td->fields = NULL;
1064
5519cab4 1065 return 0;
5519cab4
BT		 1066}
1067
1068#ifdef CONFIG_PM
1069static int mt_reset_resume(struct hid_device *hdev)
1070{
31ae9bdd 1071 mt_set_maxcontacts(hdev);
5519cab4
BT		 1072 mt_set_input_mode(hdev);
1073 return 0;
1074}
dfeefd10
SL		 1075
1076static int mt_resume(struct hid_device *hdev)
1077{
dfeefd10
SL		 1078 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1079 * It should be safe to send it to other devices too.
1080 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1081
4ba25d3f 1082 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
dfeefd10
SL		 1083
1084 return 0;
1085}
5519cab4
BT		 1086#endif
1087
1088static void mt_remove(struct hid_device *hdev)
1089{
eec29e3d 1090 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
5939212d 1091 hid_hw_stop(hdev);
5519cab4
BT		 1092}
1093
0fa9c616
BT		 1094/*
1095 * This list contains only:
1096 * - VID/PID of products not working with the default multitouch handling
1097 * - 2 generic rules.
1098 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1099 */
5519cab4
BT		 1100static const struct hid_device_id mt_devices[] = {
1101
f786bba4
BT		 1102 /* 3M panels */
1103 { .driver_data = MT_CLS_3M,
2c2110e9 1104 MT_USB_DEVICE(USB_VENDOR_ID_3M,
f786bba4
BT		 1105 USB_DEVICE_ID_3M1968) },
1106 { .driver_data = MT_CLS_3M,
2c2110e9 1107 MT_USB_DEVICE(USB_VENDOR_ID_3M,
f786bba4 1108 USB_DEVICE_ID_3M2256) },
c4fad877 1109 { .driver_data = MT_CLS_3M,
2c2110e9 1110 MT_USB_DEVICE(USB_VENDOR_ID_3M,
c4fad877 1111 USB_DEVICE_ID_3M3266) },
f786bba4 1112
6aef704e
BT		 1113 /* Anton devices */
1114 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1115 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1116 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
e6aac342 1117
b1057124 1118 /* Atmel panels */
841cb157 1119 { .driver_data = MT_CLS_SERIAL,
2c2110e9 1120 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
841cb157 1121 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
b1057124 1122
9ed32695 1123 /* Baanto multitouch devices */
dc3e1d80 1124 { .driver_data = MT_CLS_NSMU,
16b79bb8 1125 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
9ed32695 1126 USB_DEVICE_ID_BAANTO_MT_190W2) },
0fa9c616 1127
a841b62c
BT		 1128 /* Cando panels */
1129 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2c2110e9 1130 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
a841b62c 1131 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
a841b62c 1132 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
2c2110e9 1133 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
a841b62c
BT		 1134 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1135
942fd422 1136 /* Chunghwa Telecom touch panels */
dc3e1d80 1137 { .driver_data = MT_CLS_NSMU,
2c2110e9 1138 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
942fd422
AZ		 1139 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1140
79603dc9 1141 /* CVTouch panels */
dc3e1d80 1142 { .driver_data = MT_CLS_NSMU,
2c2110e9 1143 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
79603dc9
BT		 1144 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1145
22408283 1146 /* eGalax devices (resistive) */
e36f690b 1147 { .driver_data = MT_CLS_EGALAX,
2c2110e9 1148 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b
BT		 1149 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1150 { .driver_data = MT_CLS_EGALAX,
2c2110e9 1151 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 1152 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
22408283
BT		 1153
1154 /* eGalax devices (capacitive) */
fd1d1525 1155 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1156 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
fd1d1525 1157 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
aa672da1 1158 { .driver_data = MT_CLS_EGALAX,
2c2110e9 1159 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
aa672da1 1160 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
fd1d1525 1161 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1162 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
fd1d1525 1163 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
2ce09df4 1164 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1165 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
2ce09df4 1166 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
aa672da1 1167 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1168 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
aa672da1 1169 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
fd1d1525 1170 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1171 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
fd1d1525 1172 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
aa672da1
AS		 1173 { .driver_data = MT_CLS_EGALAX,
1174 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1175 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
e36f690b 1176 { .driver_data = MT_CLS_EGALAX,
2c2110e9 1177 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 1178 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
fd1d1525 1179 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1180 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
fd1d1525 1181 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
aa672da1
AS		 1182 { .driver_data = MT_CLS_EGALAX,
1183 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1184 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1185 { .driver_data = MT_CLS_EGALAX,
1186 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1187 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
66f06127 1188 { .driver_data = MT_CLS_EGALAX,
2c2110e9 1189 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
66f06127 1190 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
bb9ff210 1191 { .driver_data = MT_CLS_EGALAX,
2c2110e9 1192 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
bb9ff210 1193 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
fd1d1525 1194 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1195 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
fd1d1525 1196 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1b723e8d 1197 { .driver_data = MT_CLS_EGALAX_SERIAL,
ae01c9e5
TR		 1198 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1199 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1b723e8d 1200 { .driver_data = MT_CLS_EGALAX_SERIAL,
2c2110e9 1201 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
e36f690b 1202 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
22408283 1203
7c7606a2
TS		 1204 /* Elitegroup panel */
1205 { .driver_data = MT_CLS_SERIAL,
1206 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1207 USB_DEVICE_ID_ELITEGROUP_05D8) },
1208
77723e3b
HR		 1209 /* Flatfrog Panels */
1210 { .driver_data = MT_CLS_FLATFROG,
1211 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1212 USB_DEVICE_ID_MULTITOUCH_3200) },
1213
3db187e7
BT		 1214 /* FocalTech Panels */
1215 { .driver_data = MT_CLS_SERIAL,
1216 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1217 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1218
5572da08 1219 /* GeneralTouch panel */
f5ff4e1e 1220 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2c2110e9 1221 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
5572da08 1222 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
f5ff4e1e
XY		 1223 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1224 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1225 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
7b226292
L		 1226 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1227 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1228 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1229 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1230 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1231 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1232 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1233 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1234 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1235 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1236 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1237 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1238 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1239 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1240 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
5572da08 1241
4d5df5d1 1242 /* Gametel game controller */
dc3e1d80 1243 { .driver_data = MT_CLS_NSMU,
2c2110e9 1244 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
4d5df5d1
AN		 1245 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1246
ee0fbd14 1247 /* GoodTouch panels */
dc3e1d80 1248 { .driver_data = MT_CLS_NSMU,
2c2110e9 1249 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
ee0fbd14
BT		 1250 USB_DEVICE_ID_GOODTOUCH_000f) },
1251
54580365
BT		 1252 /* Hanvon panels */
1253 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2c2110e9 1254 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
54580365
BT		 1255 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1256
4e61f0d7 1257 /* Ilitek dual touch panel */
dc3e1d80 1258 { .driver_data = MT_CLS_NSMU,
2c2110e9 1259 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
4e61f0d7
AZ		 1260 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1261
4a6ee685
BT		 1262 /* MosArt panels */
1263 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2c2110e9 1264 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
4a6ee685
BT		 1265 USB_DEVICE_ID_ASUS_T91MT)},
1266 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2c2110e9 1267 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
4a6ee685
BT		 1268 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1269 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2c2110e9 1270 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
4a6ee685
BT		 1271 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1272
2258e863
DK		 1273 /* Panasonic panels */
1274 { .driver_data = MT_CLS_PANASONIC,
2c2110e9 1275 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2258e863
DK		 1276 USB_DEVICE_ID_PANABOARD_UBT780) },
1277 { .driver_data = MT_CLS_PANASONIC,
2c2110e9 1278 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2258e863
DK		 1279 USB_DEVICE_ID_PANABOARD_UBT880) },
1280
4db703ea 1281 /* Novatek Panel */
dc3e1d80 1282 { .driver_data = MT_CLS_NSMU,
4380d819 1283 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
4db703ea
AH		 1284 USB_DEVICE_ID_NOVATEK_PCT) },
1285
b7ea95ff
AT		 1286 /* PixArt optical touch screen */
1287 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2c2110e9 1288 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
b7ea95ff
AT		 1289 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1290 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2c2110e9 1291 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
b7ea95ff
AT		 1292 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1293 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2c2110e9 1294 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
b7ea95ff
AT		 1295 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1296
5519cab4 1297 /* PixCir-based panels */
1e9cf35b 1298 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2c2110e9 1299 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
5519cab4
BT		 1300 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1301
5e7ea11f 1302 /* Quanta-based panels */
5e7ea11f 1303 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2c2110e9 1304 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
5e7ea11f 1305 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
a6802e00 1306
043b403a 1307 /* Stantum panels */
bf5af9b5 1308 { .driver_data = MT_CLS_CONFIDENCE,
2c2110e9 1309 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
043b403a 1310 USB_DEVICE_ID_MTP_STM)},
043b403a 1311
847672cd
BT		 1312 /* TopSeed panels */
1313 { .driver_data = MT_CLS_TOPSEED,
2c2110e9 1314 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
847672cd
BT		 1315 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1316
5e74e56d 1317 /* Touch International panels */
dc3e1d80 1318 { .driver_data = MT_CLS_NSMU,
2c2110e9 1319 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
5e74e56d
BT		 1320 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1321
617b64f9 1322 /* Unitec panels */
dc3e1d80 1323 { .driver_data = MT_CLS_NSMU,
2c2110e9 1324 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
617b64f9 1325 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
dc3e1d80 1326 { .driver_data = MT_CLS_NSMU,
2c2110e9 1327 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
617b64f9 1328 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
bf9d121e 1329
da10bc25
MM		 1330 /* VTL panels */
1331 { .driver_data = MT_CLS_VTL,
1332 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1333 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1334
bf9d121e
KC		 1335 /* Wistron panels */
1336 { .driver_data = MT_CLS_NSMU,
1337 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1338 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1339
bc8a2a9b 1340 /* XAT */
dc3e1d80 1341 { .driver_data = MT_CLS_NSMU,
2c2110e9 1342 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
bc8a2a9b 1343 USB_DEVICE_ID_XAT_CSR) },
617b64f9 1344
11576c61 1345 /* Xiroku */
dc3e1d80 1346 { .driver_data = MT_CLS_NSMU,
2c2110e9 1347 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1348 USB_DEVICE_ID_XIROKU_SPX) },
dc3e1d80 1349 { .driver_data = MT_CLS_NSMU,
2c2110e9 1350 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1351 USB_DEVICE_ID_XIROKU_MPX) },
dc3e1d80 1352 { .driver_data = MT_CLS_NSMU,
2c2110e9 1353 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1354 USB_DEVICE_ID_XIROKU_CSR) },
dc3e1d80 1355 { .driver_data = MT_CLS_NSMU,
2c2110e9 1356 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1357 USB_DEVICE_ID_XIROKU_SPX1) },
dc3e1d80 1358 { .driver_data = MT_CLS_NSMU,
2c2110e9 1359 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1360 USB_DEVICE_ID_XIROKU_MPX1) },
dc3e1d80 1361 { .driver_data = MT_CLS_NSMU,
2c2110e9 1362 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1363 USB_DEVICE_ID_XIROKU_CSR1) },
dc3e1d80 1364 { .driver_data = MT_CLS_NSMU,
2c2110e9 1365 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1366 USB_DEVICE_ID_XIROKU_SPX2) },
dc3e1d80 1367 { .driver_data = MT_CLS_NSMU,
2c2110e9 1368 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61 1369 USB_DEVICE_ID_XIROKU_MPX2) },
dc3e1d80 1370 { .driver_data = MT_CLS_NSMU,
2c2110e9 1371 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
11576c61
MH		 1372 USB_DEVICE_ID_XIROKU_CSR2) },
1373
4fa3a583
HR		 1374 /* Generic MT device */
1375 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
f961bd35
BT		 1376
1377 /* Generic Win 8 certified MT device */
1378 { .driver_data = MT_CLS_WIN_8,
1379 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1380 HID_ANY_ID, HID_ANY_ID) },
5519cab4
BT		 1381 { }
1382};
1383MODULE_DEVICE_TABLE(hid, mt_devices);
1384
1385static const struct hid_usage_id mt_grabbed_usages[] = {
1386 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1387 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1388};
1389
1390static struct hid_driver mt_driver = {
1391 .name = "hid-multitouch",
1392 .id_table = mt_devices,
1393 .probe = mt_probe,
1394 .remove = mt_remove,
1395 .input_mapping = mt_input_mapping,
1396 .input_mapped = mt_input_mapped,
76f5902a 1397 .input_configured = mt_input_configured,
5519cab4
BT		 1398 .feature_mapping = mt_feature_mapping,
1399 .usage_table = mt_grabbed_usages,
1400 .event = mt_event,
55978fa9 1401 .report = mt_report,
5519cab4
BT		 1402#ifdef CONFIG_PM
1403 .reset_resume = mt_reset_resume,
dfeefd10 1404 .resume = mt_resume,
5519cab4
BT		 1405#endif
1406};
f425458e 1407module_hid_driver(mt_driver);
Linux 6.x block layer and io_uring tree(s)