Commit | Line | Data |
---|---|---|
94011f93 | 1 | /* |
57fd637a | 2 | * HID driver for N-Trig touchscreens |
94011f93 | 3 | * |
6549981b SC |
4 | * Copyright (c) 2008-2010 Rafi Rubin |
5 | * Copyright (c) 2009-2010 Stephane Chatty | |
94011f93 RR |
6 | * |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the Free | |
12 | * Software Foundation; either version 2 of the License, or (at your option) | |
13 | * any later version. | |
14 | */ | |
15 | ||
16 | #include <linux/device.h> | |
17 | #include <linux/hid.h> | |
6549981b SC |
18 | #include <linux/usb.h> |
19 | #include "usbhid/usbhid.h" | |
94011f93 | 20 | #include <linux/module.h> |
5a0e3ad6 | 21 | #include <linux/slab.h> |
94011f93 RR |
22 | |
23 | #include "hid-ids.h" | |
24 | ||
25 | #define NTRIG_DUPLICATE_USAGES 0x001 | |
26 | ||
369db2a6 RR |
27 | static unsigned int min_width; |
28 | static unsigned int min_height; | |
29 | static unsigned int activate_slack = 1; | |
30 | static unsigned int deactivate_slack = 4; | |
31 | static unsigned int activation_width = 64; | |
32 | static unsigned int activation_height = 32; | |
33 | ||
57fd637a | 34 | struct ntrig_data { |
dbf2b17d RR |
35 | /* Incoming raw values for a single contact */ |
36 | __u16 x, y, w, h; | |
37 | __u16 id; | |
250d3775 RR |
38 | |
39 | bool tipswitch; | |
40 | bool confidence; | |
41 | bool first_contact_touch; | |
dbf2b17d RR |
42 | |
43 | bool reading_mt; | |
dbf2b17d RR |
44 | |
45 | __u8 mt_footer[4]; | |
46 | __u8 mt_foot_count; | |
369db2a6 RR |
47 | |
48 | /* The current activation state. */ | |
49 | __s8 act_state; | |
50 | ||
51 | /* Empty frames to ignore before recognizing the end of activity */ | |
52 | __s8 deactivate_slack; | |
53 | ||
54 | /* Frames to ignore before acknowledging the start of activity */ | |
55 | __s8 activate_slack; | |
56 | ||
57 | /* Minimum size contact to accept */ | |
58 | __u16 min_width; | |
59 | __u16 min_height; | |
60 | ||
61 | /* Threshold to override activation slack */ | |
62 | __u16 activation_width; | |
63 | __u16 activation_height; | |
64 | ||
65 | __u16 sensor_logical_width; | |
66 | __u16 sensor_logical_height; | |
67 | __u16 sensor_physical_width; | |
68 | __u16 sensor_physical_height; | |
57fd637a SC |
69 | }; |
70 | ||
71 | /* | |
72 | * this driver is aimed at two firmware versions in circulation: | |
73 | * - dual pen/finger single touch | |
74 | * - finger multitouch, pen not working | |
75 | */ | |
76 | ||
94011f93 RR |
77 | static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
78 | struct hid_field *field, struct hid_usage *usage, | |
79 | unsigned long **bit, int *max) | |
80 | { | |
369db2a6 RR |
81 | struct ntrig_data *nd = hid_get_drvdata(hdev); |
82 | ||
dbf2b17d RR |
83 | /* No special mappings needed for the pen and single touch */ |
84 | if (field->physical) | |
943ed464 RR |
85 | return 0; |
86 | ||
57fd637a | 87 | switch (usage->hid & HID_USAGE_PAGE) { |
57fd637a SC |
88 | case HID_UP_GENDESK: |
89 | switch (usage->hid) { | |
90 | case HID_GD_X: | |
91 | hid_map_usage(hi, usage, bit, max, | |
92 | EV_ABS, ABS_MT_POSITION_X); | |
93 | input_set_abs_params(hi->input, ABS_X, | |
94 | field->logical_minimum, | |
95 | field->logical_maximum, 0, 0); | |
369db2a6 RR |
96 | |
97 | if (!nd->sensor_logical_width) { | |
98 | nd->sensor_logical_width = | |
99 | field->logical_maximum - | |
100 | field->logical_minimum; | |
101 | nd->sensor_physical_width = | |
102 | field->physical_maximum - | |
103 | field->physical_minimum; | |
104 | nd->activation_width = activation_width * | |
105 | nd->sensor_logical_width / | |
106 | nd->sensor_physical_width; | |
107 | nd->min_width = min_width * | |
108 | nd->sensor_logical_width / | |
109 | nd->sensor_physical_width; | |
110 | } | |
57fd637a SC |
111 | return 1; |
112 | case HID_GD_Y: | |
113 | hid_map_usage(hi, usage, bit, max, | |
114 | EV_ABS, ABS_MT_POSITION_Y); | |
115 | input_set_abs_params(hi->input, ABS_Y, | |
116 | field->logical_minimum, | |
117 | field->logical_maximum, 0, 0); | |
369db2a6 RR |
118 | |
119 | if (!nd->sensor_logical_height) { | |
120 | nd->sensor_logical_height = | |
121 | field->logical_maximum - | |
122 | field->logical_minimum; | |
123 | nd->sensor_physical_height = | |
124 | field->physical_maximum - | |
125 | field->physical_minimum; | |
126 | nd->activation_height = activation_height * | |
127 | nd->sensor_logical_height / | |
128 | nd->sensor_physical_height; | |
129 | nd->min_height = min_height * | |
130 | nd->sensor_logical_height / | |
131 | nd->sensor_physical_height; | |
132 | } | |
57fd637a SC |
133 | return 1; |
134 | } | |
135 | return 0; | |
136 | ||
137 | case HID_UP_DIGITIZER: | |
138 | switch (usage->hid) { | |
139 | /* we do not want to map these for now */ | |
dbf2b17d | 140 | case HID_DG_CONTACTID: /* Not trustworthy, squelch for now */ |
57fd637a SC |
141 | case HID_DG_INPUTMODE: |
142 | case HID_DG_DEVICEINDEX: | |
57fd637a SC |
143 | case HID_DG_CONTACTMAX: |
144 | return -1; | |
145 | ||
57fd637a SC |
146 | /* width/height mapped on TouchMajor/TouchMinor/Orientation */ |
147 | case HID_DG_WIDTH: | |
148 | hid_map_usage(hi, usage, bit, max, | |
149 | EV_ABS, ABS_MT_TOUCH_MAJOR); | |
150 | return 1; | |
151 | case HID_DG_HEIGHT: | |
152 | hid_map_usage(hi, usage, bit, max, | |
153 | EV_ABS, ABS_MT_TOUCH_MINOR); | |
154 | input_set_abs_params(hi->input, ABS_MT_ORIENTATION, | |
155 | 0, 1, 0, 0); | |
156 | return 1; | |
157 | } | |
158 | return 0; | |
159 | ||
160 | case 0xff000000: | |
161 | /* we do not want to map these: no input-oriented meaning */ | |
162 | return -1; | |
94011f93 | 163 | } |
57fd637a | 164 | |
94011f93 RR |
165 | return 0; |
166 | } | |
167 | ||
168 | static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
169 | struct hid_field *field, struct hid_usage *usage, | |
170 | unsigned long **bit, int *max) | |
171 | { | |
dbf2b17d RR |
172 | /* No special mappings needed for the pen and single touch */ |
173 | if (field->physical) | |
943ed464 | 174 | return 0; |
b0549cf1 | 175 | |
94011f93 RR |
176 | if (usage->type == EV_KEY || usage->type == EV_REL |
177 | || usage->type == EV_ABS) | |
178 | clear_bit(usage->code, *bit); | |
179 | ||
180 | return 0; | |
181 | } | |
57fd637a SC |
182 | |
183 | /* | |
184 | * this function is called upon all reports | |
185 | * so that we can filter contact point information, | |
186 | * decide whether we are in multi or single touch mode | |
187 | * and call input_mt_sync after each point if necessary | |
188 | */ | |
189 | static int ntrig_event (struct hid_device *hid, struct hid_field *field, | |
190 | struct hid_usage *usage, __s32 value) | |
191 | { | |
192 | struct input_dev *input = field->hidinput->input; | |
193 | struct ntrig_data *nd = hid_get_drvdata(hid); | |
194 | ||
943ed464 RR |
195 | /* No special handling needed for the pen */ |
196 | if (field->application == HID_DG_PEN) | |
197 | return 0; | |
198 | ||
57fd637a SC |
199 | if (hid->claimed & HID_CLAIMED_INPUT) { |
200 | switch (usage->hid) { | |
dbf2b17d RR |
201 | case 0xff000001: |
202 | /* Tag indicating the start of a multitouch group */ | |
203 | nd->reading_mt = 1; | |
250d3775 | 204 | nd->first_contact_touch = 0; |
dbf2b17d | 205 | break; |
2886539d | 206 | case HID_DG_TIPSWITCH: |
250d3775 | 207 | nd->tipswitch = value; |
2886539d RR |
208 | /* Prevent emission of touch until validated */ |
209 | return 1; | |
dbf2b17d RR |
210 | case HID_DG_CONFIDENCE: |
211 | nd->confidence = value; | |
212 | break; | |
57fd637a SC |
213 | case HID_GD_X: |
214 | nd->x = value; | |
dbf2b17d RR |
215 | /* Clear the contact footer */ |
216 | nd->mt_foot_count = 0; | |
57fd637a SC |
217 | break; |
218 | case HID_GD_Y: | |
219 | nd->y = value; | |
220 | break; | |
221 | case HID_DG_CONTACTID: | |
222 | nd->id = value; | |
57fd637a SC |
223 | break; |
224 | case HID_DG_WIDTH: | |
225 | nd->w = value; | |
226 | break; | |
227 | case HID_DG_HEIGHT: | |
228 | nd->h = value; | |
229 | /* | |
230 | * when in single touch mode, this is the last | |
231 | * report received in a finger event. We want | |
232 | * to emit a normal (X, Y) position | |
233 | */ | |
dbf2b17d | 234 | if (!nd->reading_mt) { |
250d3775 RR |
235 | /* |
236 | * TipSwitch indicates the presence of a | |
237 | * finger in single touch mode. | |
238 | */ | |
2170c5a8 | 239 | input_report_key(input, BTN_TOUCH, |
250d3775 RR |
240 | nd->tipswitch); |
241 | input_report_key(input, BTN_TOOL_DOUBLETAP, | |
242 | nd->tipswitch); | |
57fd637a SC |
243 | input_event(input, EV_ABS, ABS_X, nd->x); |
244 | input_event(input, EV_ABS, ABS_Y, nd->y); | |
57fd637a SC |
245 | } |
246 | break; | |
247 | case 0xff000002: | |
248 | /* | |
249 | * we receive this when the device is in multitouch | |
250 | * mode. The first of the three values tagged with | |
251 | * this usage tells if the contact point is real | |
252 | * or a placeholder | |
253 | */ | |
dbf2b17d RR |
254 | |
255 | /* Shouldn't get more than 4 footer packets, so skip */ | |
256 | if (nd->mt_foot_count >= 4) | |
257 | break; | |
258 | ||
259 | nd->mt_footer[nd->mt_foot_count++] = value; | |
260 | ||
261 | /* if the footer isn't complete break */ | |
262 | if (nd->mt_foot_count != 4) | |
263 | break; | |
264 | ||
369db2a6 | 265 | /* Pen activity signal. */ |
dbf2b17d | 266 | if (nd->mt_footer[2]) { |
369db2a6 RR |
267 | /* |
268 | * When the pen deactivates touch, we see a | |
269 | * bogus frame with ContactCount > 0. | |
270 | * We can | |
271 | * save a bit of work by ensuring act_state < 0 | |
272 | * even if deactivation slack is turned off. | |
273 | */ | |
274 | nd->act_state = deactivate_slack - 1; | |
dbf2b17d | 275 | nd->confidence = 0; |
57fd637a | 276 | break; |
dbf2b17d RR |
277 | } |
278 | ||
369db2a6 RR |
279 | /* |
280 | * The first footer value indicates the presence of a | |
281 | * finger. | |
282 | */ | |
283 | if (nd->mt_footer[0]) { | |
284 | /* | |
285 | * We do not want to process contacts under | |
286 | * the size threshold, but do not want to | |
287 | * ignore them for activation state | |
288 | */ | |
289 | if (nd->w < nd->min_width || | |
290 | nd->h < nd->min_height) | |
291 | nd->confidence = 0; | |
292 | } else | |
dbf2b17d | 293 | break; |
369db2a6 RR |
294 | |
295 | if (nd->act_state > 0) { | |
296 | /* | |
297 | * Contact meets the activation size threshold | |
298 | */ | |
299 | if (nd->w >= nd->activation_width && | |
300 | nd->h >= nd->activation_height) { | |
301 | if (nd->id) | |
302 | /* | |
303 | * first contact, activate now | |
304 | */ | |
305 | nd->act_state = 0; | |
306 | else { | |
307 | /* | |
308 | * avoid corrupting this frame | |
309 | * but ensure next frame will | |
310 | * be active | |
311 | */ | |
312 | nd->act_state = 1; | |
313 | break; | |
314 | } | |
315 | } else | |
316 | /* | |
317 | * Defer adjusting the activation state | |
318 | * until the end of the frame. | |
319 | */ | |
320 | break; | |
dbf2b17d RR |
321 | } |
322 | ||
369db2a6 RR |
323 | /* Discarding this contact */ |
324 | if (!nd->confidence) | |
325 | break; | |
326 | ||
57fd637a SC |
327 | /* emit a normal (X, Y) for the first point only */ |
328 | if (nd->id == 0) { | |
250d3775 RR |
329 | /* |
330 | * TipSwitch is superfluous in multitouch | |
331 | * mode. The footer events tell us | |
332 | * if there is a finger on the screen or | |
333 | * not. | |
334 | */ | |
335 | nd->first_contact_touch = nd->confidence; | |
57fd637a SC |
336 | input_event(input, EV_ABS, ABS_X, nd->x); |
337 | input_event(input, EV_ABS, ABS_Y, nd->y); | |
338 | } | |
369db2a6 RR |
339 | |
340 | /* Emit MT events */ | |
57fd637a SC |
341 | input_event(input, EV_ABS, ABS_MT_POSITION_X, nd->x); |
342 | input_event(input, EV_ABS, ABS_MT_POSITION_Y, nd->y); | |
369db2a6 RR |
343 | |
344 | /* | |
345 | * Translate from height and width to size | |
346 | * and orientation. | |
347 | */ | |
57fd637a SC |
348 | if (nd->w > nd->h) { |
349 | input_event(input, EV_ABS, | |
350 | ABS_MT_ORIENTATION, 1); | |
351 | input_event(input, EV_ABS, | |
352 | ABS_MT_TOUCH_MAJOR, nd->w); | |
353 | input_event(input, EV_ABS, | |
354 | ABS_MT_TOUCH_MINOR, nd->h); | |
355 | } else { | |
356 | input_event(input, EV_ABS, | |
357 | ABS_MT_ORIENTATION, 0); | |
358 | input_event(input, EV_ABS, | |
359 | ABS_MT_TOUCH_MAJOR, nd->h); | |
360 | input_event(input, EV_ABS, | |
361 | ABS_MT_TOUCH_MINOR, nd->w); | |
362 | } | |
363 | input_mt_sync(field->hidinput->input); | |
dbf2b17d RR |
364 | break; |
365 | ||
366 | case HID_DG_CONTACTCOUNT: /* End of a multitouch group */ | |
369db2a6 | 367 | if (!nd->reading_mt) /* Just to be sure */ |
dbf2b17d RR |
368 | break; |
369 | ||
370 | nd->reading_mt = 0; | |
371 | ||
369db2a6 RR |
372 | |
373 | /* | |
374 | * Activation state machine logic: | |
375 | * | |
376 | * Fundamental states: | |
377 | * state > 0: Inactive | |
378 | * state <= 0: Active | |
379 | * state < -deactivate_slack: | |
380 | * Pen termination of touch | |
381 | * | |
382 | * Specific values of interest | |
383 | * state == activate_slack | |
384 | * no valid input since the last reset | |
385 | * | |
386 | * state == 0 | |
387 | * general operational state | |
388 | * | |
389 | * state == -deactivate_slack | |
390 | * read sufficient empty frames to accept | |
391 | * the end of input and reset | |
392 | */ | |
393 | ||
394 | if (nd->act_state > 0) { /* Currently inactive */ | |
395 | if (value) | |
396 | /* | |
397 | * Consider each live contact as | |
398 | * evidence of intentional activity. | |
399 | */ | |
400 | nd->act_state = (nd->act_state > value) | |
401 | ? nd->act_state - value | |
402 | : 0; | |
403 | else | |
404 | /* | |
405 | * Empty frame before we hit the | |
406 | * activity threshold, reset. | |
407 | */ | |
408 | nd->act_state = nd->activate_slack; | |
409 | ||
410 | /* | |
411 | * Entered this block inactive and no | |
412 | * coordinates sent this frame, so hold off | |
413 | * on button state. | |
414 | */ | |
415 | break; | |
416 | } else { /* Currently active */ | |
417 | if (value && nd->act_state >= | |
418 | nd->deactivate_slack) | |
419 | /* | |
420 | * Live point: clear accumulated | |
421 | * deactivation count. | |
422 | */ | |
423 | nd->act_state = 0; | |
424 | else if (nd->act_state <= nd->deactivate_slack) | |
425 | /* | |
426 | * We've consumed the deactivation | |
427 | * slack, time to deactivate and reset. | |
428 | */ | |
429 | nd->act_state = | |
430 | nd->activate_slack; | |
431 | else { /* Move towards deactivation */ | |
432 | nd->act_state--; | |
433 | break; | |
434 | } | |
435 | } | |
436 | ||
437 | if (nd->first_contact_touch && nd->act_state <= 0) { | |
438 | /* | |
439 | * Check to see if we're ready to start | |
440 | * emitting touch events. | |
441 | * | |
442 | * Note: activation slack will decrease over | |
443 | * the course of the frame, and it will be | |
444 | * inconsistent from the start to the end of | |
445 | * the frame. However if the frame starts | |
446 | * with slack, first_contact_touch will still | |
447 | * be 0 and we will not get to this point. | |
448 | */ | |
ed7e2ca2 | 449 | input_report_key(input, BTN_TOOL_DOUBLETAP, 1); |
dbf2b17d RR |
450 | input_report_key(input, BTN_TOUCH, 1); |
451 | } else { | |
ed7e2ca2 | 452 | input_report_key(input, BTN_TOOL_DOUBLETAP, 0); |
2886539d | 453 | input_report_key(input, BTN_TOUCH, 0); |
dbf2b17d | 454 | } |
57fd637a SC |
455 | break; |
456 | ||
457 | default: | |
369db2a6 | 458 | /* fall-back to the generic hidinput handling */ |
57fd637a SC |
459 | return 0; |
460 | } | |
461 | } | |
462 | ||
463 | /* we have handled the hidinput part, now remains hiddev */ | |
943ed464 RR |
464 | if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_hid_event) |
465 | hid->hiddev_hid_event(hid, field, usage, value); | |
57fd637a SC |
466 | |
467 | return 1; | |
468 | } | |
469 | ||
470 | static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
471 | { | |
472 | int ret; | |
473 | struct ntrig_data *nd; | |
943ed464 RR |
474 | struct hid_input *hidinput; |
475 | struct input_dev *input; | |
6549981b | 476 | struct hid_report *report; |
943ed464 RR |
477 | |
478 | if (id->driver_data) | |
479 | hdev->quirks |= HID_QUIRK_MULTI_INPUT; | |
57fd637a SC |
480 | |
481 | nd = kmalloc(sizeof(struct ntrig_data), GFP_KERNEL); | |
482 | if (!nd) { | |
483 | dev_err(&hdev->dev, "cannot allocate N-Trig data\n"); | |
484 | return -ENOMEM; | |
485 | } | |
dbf2b17d RR |
486 | |
487 | nd->reading_mt = 0; | |
369db2a6 RR |
488 | nd->min_width = 0; |
489 | nd->min_height = 0; | |
490 | nd->activate_slack = activate_slack; | |
491 | nd->act_state = activate_slack; | |
492 | nd->deactivate_slack = -deactivate_slack; | |
493 | nd->sensor_logical_width = 0; | |
494 | nd->sensor_logical_height = 0; | |
495 | nd->sensor_physical_width = 0; | |
496 | nd->sensor_physical_height = 0; | |
497 | ||
57fd637a SC |
498 | hid_set_drvdata(hdev, nd); |
499 | ||
500 | ret = hid_parse(hdev); | |
943ed464 RR |
501 | if (ret) { |
502 | dev_err(&hdev->dev, "parse failed\n"); | |
503 | goto err_free; | |
504 | } | |
505 | ||
506 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); | |
507 | if (ret) { | |
508 | dev_err(&hdev->dev, "hw start failed\n"); | |
509 | goto err_free; | |
510 | } | |
57fd637a | 511 | |
837b4753 | 512 | |
943ed464 | 513 | list_for_each_entry(hidinput, &hdev->inputs, list) { |
2886539d RR |
514 | if (hidinput->report->maxfield < 1) |
515 | continue; | |
516 | ||
943ed464 RR |
517 | input = hidinput->input; |
518 | switch (hidinput->report->field[0]->application) { | |
519 | case HID_DG_PEN: | |
520 | input->name = "N-Trig Pen"; | |
521 | break; | |
522 | case HID_DG_TOUCHSCREEN: | |
2886539d RR |
523 | /* These keys are redundant for fingers, clear them |
524 | * to prevent incorrect identification */ | |
dbf2b17d | 525 | __clear_bit(BTN_TOOL_PEN, input->keybit); |
2886539d RR |
526 | __clear_bit(BTN_TOOL_FINGER, input->keybit); |
527 | __clear_bit(BTN_0, input->keybit); | |
dbf2b17d | 528 | __set_bit(BTN_TOOL_DOUBLETAP, input->keybit); |
943ed464 RR |
529 | /* |
530 | * The physical touchscreen (single touch) | |
531 | * input has a value for physical, whereas | |
532 | * the multitouch only has logical input | |
533 | * fields. | |
534 | */ | |
535 | input->name = | |
536 | (hidinput->report->field[0] | |
537 | ->physical) ? | |
538 | "N-Trig Touchscreen" : | |
539 | "N-Trig MultiTouch"; | |
540 | break; | |
541 | } | |
542 | } | |
543 | ||
c0858552 JK |
544 | /* This is needed for devices with more recent firmware versions */ |
545 | report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[0x0a]; | |
6549981b SC |
546 | if (report) |
547 | usbhid_submit_report(hdev, report, USB_DIR_OUT); | |
548 | ||
549 | ||
943ed464 RR |
550 | return 0; |
551 | err_free: | |
552 | kfree(nd); | |
57fd637a SC |
553 | return ret; |
554 | } | |
555 | ||
556 | static void ntrig_remove(struct hid_device *hdev) | |
557 | { | |
558 | hid_hw_stop(hdev); | |
559 | kfree(hid_get_drvdata(hdev)); | |
560 | } | |
561 | ||
94011f93 RR |
562 | static const struct hid_device_id ntrig_devices[] = { |
563 | { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN), | |
564 | .driver_data = NTRIG_DUPLICATE_USAGES }, | |
565 | { } | |
566 | }; | |
567 | MODULE_DEVICE_TABLE(hid, ntrig_devices); | |
568 | ||
57fd637a SC |
569 | static const struct hid_usage_id ntrig_grabbed_usages[] = { |
570 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, | |
943ed464 | 571 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1 } |
57fd637a SC |
572 | }; |
573 | ||
94011f93 RR |
574 | static struct hid_driver ntrig_driver = { |
575 | .name = "ntrig", | |
576 | .id_table = ntrig_devices, | |
57fd637a SC |
577 | .probe = ntrig_probe, |
578 | .remove = ntrig_remove, | |
94011f93 RR |
579 | .input_mapping = ntrig_input_mapping, |
580 | .input_mapped = ntrig_input_mapped, | |
57fd637a SC |
581 | .usage_table = ntrig_grabbed_usages, |
582 | .event = ntrig_event, | |
94011f93 RR |
583 | }; |
584 | ||
a24f423b | 585 | static int __init ntrig_init(void) |
94011f93 RR |
586 | { |
587 | return hid_register_driver(&ntrig_driver); | |
588 | } | |
589 | ||
a24f423b | 590 | static void __exit ntrig_exit(void) |
94011f93 RR |
591 | { |
592 | hid_unregister_driver(&ntrig_driver); | |
593 | } | |
594 | ||
595 | module_init(ntrig_init); | |
596 | module_exit(ntrig_exit); | |
597 | MODULE_LICENSE("GPL"); |