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Linux 4.16.11
[linux/fpc-iii.git] / drivers / hid / hid-asus.c
blob88b9703318e404602f8b4733552d0d06be363103
1 /*
2 * HID driver for Asus notebook built-in keyboard.
3 * Fixes small logical maximum to match usage maximum.
4 *
5 * Currently supported devices are:
6 * EeeBook X205TA
7 * VivoBook E200HA
8 *
9 * Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
10 *
11 * This module based on hid-ortek by
12 * Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
13 * Copyright (c) 2011 Jiri Kosina
14 *
15 * This module has been updated to add support for Asus i2c touchpad.
16 *
17 * Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
18 * Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
19 * Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
20 */
21
22 /*
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)
26 * any later version.
27 */
28
29 #include <linux/dmi.h>
30 #include <linux/hid.h>
31 #include <linux/module.h>
32 #include <linux/input/mt.h>
33 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
34
35 #include "hid-ids.h"
36
37 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
38 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
39 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
40 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
41 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
42
43 #define T100_TPAD_INTF 2
44
45 #define T100CHI_MOUSE_REPORT_ID 0x06
46 #define FEATURE_REPORT_ID 0x0d
47 #define INPUT_REPORT_ID 0x5d
48 #define FEATURE_KBD_REPORT_ID 0x5a
49 #define FEATURE_KBD_REPORT_SIZE 16
50
51 #define SUPPORT_KBD_BACKLIGHT BIT(0)
52
53 #define MAX_TOUCH_MAJOR 8
54 #define MAX_PRESSURE 128
55
56 #define BTN_LEFT_MASK 0x01
57 #define CONTACT_TOOL_TYPE_MASK 0x80
58 #define CONTACT_X_MSB_MASK 0xf0
59 #define CONTACT_Y_MSB_MASK 0x0f
60 #define CONTACT_TOUCH_MAJOR_MASK 0x07
61 #define CONTACT_PRESSURE_MASK 0x7f
62
63 #define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
64 #define QUIRK_NO_INIT_REPORTS BIT(1)
65 #define QUIRK_SKIP_INPUT_MAPPING BIT(2)
66 #define QUIRK_IS_MULTITOUCH BIT(3)
67 #define QUIRK_NO_CONSUMER_USAGES BIT(4)
68 #define QUIRK_USE_KBD_BACKLIGHT BIT(5)
69 #define QUIRK_T100_KEYBOARD BIT(6)
70 #define QUIRK_T100CHI BIT(7)
71 #define QUIRK_G752_KEYBOARD BIT(8)
72
73 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
74 QUIRK_NO_INIT_REPORTS | \
75 QUIRK_NO_CONSUMER_USAGES)
76 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
77 QUIRK_SKIP_INPUT_MAPPING | \
78 QUIRK_IS_MULTITOUCH)
79
80 #define TRKID_SGN ((TRKID_MAX + 1) >> 1)
81
82 struct asus_kbd_leds {
83 struct led_classdev cdev;
84 struct hid_device *hdev;
85 struct work_struct work;
86 unsigned int brightness;
87 bool removed;
88 };
89
90 struct asus_touchpad_info {
91 int max_x;
92 int max_y;
93 int res_x;
94 int res_y;
95 int contact_size;
96 int max_contacts;
97 };
98
99 struct asus_drvdata {
100 unsigned long quirks;
101 struct input_dev *input;
102 struct asus_kbd_leds *kbd_backlight;
103 const struct asus_touchpad_info *tp;
104 bool enable_backlight;
105 };
106
107 static const struct asus_touchpad_info asus_i2c_tp = {
108 .max_x = 2794,
109 .max_y = 1758,
110 .contact_size = 5,
111 .max_contacts = 5,
112 };
113
114 static const struct asus_touchpad_info asus_t100ta_tp = {
115 .max_x = 2240,
116 .max_y = 1120,
117 .res_x = 30, /* units/mm */
118 .res_y = 27, /* units/mm */
119 .contact_size = 5,
120 .max_contacts = 5,
121 };
122
123 static const struct asus_touchpad_info asus_t100ha_tp = {
124 .max_x = 2640,
125 .max_y = 1320,
126 .res_x = 30, /* units/mm */
127 .res_y = 29, /* units/mm */
128 .contact_size = 5,
129 .max_contacts = 5,
130 };
131
132 static const struct asus_touchpad_info asus_t200ta_tp = {
133 .max_x = 3120,
134 .max_y = 1716,
135 .res_x = 30, /* units/mm */
136 .res_y = 28, /* units/mm */
137 .contact_size = 5,
138 .max_contacts = 5,
139 };
140
141 static const struct asus_touchpad_info asus_t100chi_tp = {
142 .max_x = 2640,
143 .max_y = 1320,
144 .res_x = 31, /* units/mm */
145 .res_y = 29, /* units/mm */
146 .contact_size = 3,
147 .max_contacts = 4,
148 };
149
150 static void asus_report_contact_down(struct asus_drvdata *drvdat,
151 int toolType, u8 *data)
152 {
153 struct input_dev *input = drvdat->input;
154 int touch_major, pressure, x, y;
155
156 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
157 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
158
159 input_report_abs(input, ABS_MT_POSITION_X, x);
160 input_report_abs(input, ABS_MT_POSITION_Y, y);
161
162 if (drvdat->tp->contact_size < 5)
163 return;
164
165 if (toolType == MT_TOOL_PALM) {
166 touch_major = MAX_TOUCH_MAJOR;
167 pressure = MAX_PRESSURE;
168 } else {
169 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
170 pressure = data[4] & CONTACT_PRESSURE_MASK;
171 }
172
173 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
174 input_report_abs(input, ABS_MT_PRESSURE, pressure);
175 }
176
177 /* Required for Synaptics Palm Detection */
178 static void asus_report_tool_width(struct asus_drvdata *drvdat)
179 {
180 struct input_mt *mt = drvdat->input->mt;
181 struct input_mt_slot *oldest;
182 int oldid, count, i;
183
184 if (drvdat->tp->contact_size < 5)
185 return;
186
187 oldest = NULL;
188 oldid = mt->trkid;
189 count = 0;
190
191 for (i = 0; i < mt->num_slots; ++i) {
192 struct input_mt_slot *ps = &mt->slots[i];
193 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
194
195 if (id < 0)
196 continue;
197 if ((id - oldid) & TRKID_SGN) {
198 oldest = ps;
199 oldid = id;
200 }
201 count++;
202 }
203
204 if (oldest) {
205 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
206 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
207 }
208 }
209
210 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
211 {
212 int i, toolType = MT_TOOL_FINGER;
213 u8 *contactData = data + 2;
214
215 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts)
216 return 0;
217
218 for (i = 0; i < drvdat->tp->max_contacts; i++) {
219 bool down = !!(data[1] & BIT(i+3));
220
221 if (drvdat->tp->contact_size >= 5)
222 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
223 MT_TOOL_PALM : MT_TOOL_FINGER;
224
225 input_mt_slot(drvdat->input, i);
226 input_mt_report_slot_state(drvdat->input, toolType, down);
227
228 if (down) {
229 asus_report_contact_down(drvdat, toolType, contactData);
230 contactData += drvdat->tp->contact_size;
231 }
232 }
233
234 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
235 asus_report_tool_width(drvdat);
236
237 input_mt_sync_frame(drvdat->input);
238 input_sync(drvdat->input);
239
240 return 1;
241 }
242
243 static int asus_raw_event(struct hid_device *hdev,
244 struct hid_report *report, u8 *data, int size)
245 {
246 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
247
248 if (drvdata->tp && data[0] == INPUT_REPORT_ID)
249 return asus_report_input(drvdata, data, size);
250
251 return 0;
252 }
253
254 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
255 {
256 unsigned char *dmabuf;
257 int ret;
258
259 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
260 if (!dmabuf)
261 return -ENOMEM;
262
263 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
264 buf_size, HID_FEATURE_REPORT,
265 HID_REQ_SET_REPORT);
266 kfree(dmabuf);
267
268 return ret;
269 }
270
271 static int asus_kbd_init(struct hid_device *hdev)
272 {
273 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
274 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
275 int ret;
276
277 ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
278 if (ret < 0)
279 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
280
281 return ret;
282 }
283
284 static int asus_kbd_get_functions(struct hid_device *hdev,
285 unsigned char *kbd_func)
286 {
287 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
288 u8 *readbuf;
289 int ret;
290
291 ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
292 if (ret < 0) {
293 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
294 return ret;
295 }
296
297 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
298 if (!readbuf)
299 return -ENOMEM;
300
301 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
302 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
303 HID_REQ_GET_REPORT);
304 if (ret < 0) {
305 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
306 kfree(readbuf);
307 return ret;
308 }
309
310 *kbd_func = readbuf[6];
311
312 kfree(readbuf);
313 return ret;
314 }
315
316 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
317 enum led_brightness brightness)
318 {
319 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
320 cdev);
321 if (led->brightness == brightness)
322 return;
323
324 led->brightness = brightness;
325 schedule_work(&led->work);
326 }
327
328 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
329 {
330 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
331 cdev);
332
333 return led->brightness;
334 }
335
336 static void asus_kbd_backlight_work(struct work_struct *work)
337 {
338 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
339 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
340 int ret;
341
342 if (led->removed)
343 return;
344
345 buf[4] = led->brightness;
346
347 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
348 if (ret < 0)
349 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
350 }
351
352 static int asus_kbd_register_leds(struct hid_device *hdev)
353 {
354 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
355 unsigned char kbd_func;
356 int ret;
357
358 /* Initialize keyboard */
359 ret = asus_kbd_init(hdev);
360 if (ret < 0)
361 return ret;
362
363 /* Get keyboard functions */
364 ret = asus_kbd_get_functions(hdev, &kbd_func);
365 if (ret < 0)
366 return ret;
367
368 /* Check for backlight support */
369 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
370 return -ENODEV;
371
372 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
373 sizeof(struct asus_kbd_leds),
374 GFP_KERNEL);
375 if (!drvdata->kbd_backlight)
376 return -ENOMEM;
377
378 drvdata->kbd_backlight->removed = false;
379 drvdata->kbd_backlight->brightness = 0;
380 drvdata->kbd_backlight->hdev = hdev;
381 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
382 drvdata->kbd_backlight->cdev.max_brightness = 3;
383 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
384 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
385 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
386
387 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
388 if (ret < 0) {
389 /* No need to have this still around */
390 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
391 }
392
393 return ret;
394 }
395
396 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
397 {
398 struct input_dev *input = hi->input;
399 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
400
401 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
402 if (drvdata->quirks & QUIRK_T100CHI &&
403 hi->report->id != T100CHI_MOUSE_REPORT_ID)
404 return 0;
405
406 if (drvdata->tp) {
407 int ret;
408
409 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
410 drvdata->tp->max_x, 0, 0);
411 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
412 drvdata->tp->max_y, 0, 0);
413 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
414 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
415
416 if (drvdata->tp->contact_size >= 5) {
417 input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
418 MAX_TOUCH_MAJOR, 0, 0);
419 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
420 MAX_TOUCH_MAJOR, 0, 0);
421 input_set_abs_params(input, ABS_MT_PRESSURE, 0,
422 MAX_PRESSURE, 0, 0);
423 }
424
425 __set_bit(BTN_LEFT, input->keybit);
426 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
427
428 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
429 INPUT_MT_POINTER);
430
431 if (ret) {
432 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
433 return ret;
434 }
435 }
436
437 drvdata->input = input;
438
439 if (drvdata->enable_backlight && asus_kbd_register_leds(hdev))
440 hid_warn(hdev, "Failed to initialize backlight.\n");
441
442 return 0;
443 }
444
445 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
446 max, EV_KEY, (c))
447 static int asus_input_mapping(struct hid_device *hdev,
448 struct hid_input *hi, struct hid_field *field,
449 struct hid_usage *usage, unsigned long **bit,
450 int *max)
451 {
452 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
453
454 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
455 /* Don't map anything from the HID report.
456 * We do it all manually in asus_input_configured
457 */
458 return -1;
459 }
460
461 /*
462 * Ignore a bunch of bogus collections in the T100CHI descriptor.
463 * This avoids a bunch of non-functional hid_input devices getting
464 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
465 */
466 if (drvdata->quirks & QUIRK_T100CHI) {
467 if (field->application == (HID_UP_GENDESK | 0x0080) ||
468 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
469 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
470 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026))
471 return -1;
472 /*
473 * We use the hid_input for the mouse report for the touchpad,
474 * keep the left button, to avoid the core removing it.
475 */
476 if (field->application == HID_GD_MOUSE &&
477 usage->hid != (HID_UP_BUTTON | 1))
478 return -1;
479 }
480
481 /* ASUS-specific keyboard hotkeys */
482 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
483 set_bit(EV_REP, hi->input->evbit);
484 switch (usage->hid & HID_USAGE) {
485 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
486 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
487 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
488 case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
489 case 0x82: asus_map_key_clear(KEY_CAMERA); break;
490 case 0x88: asus_map_key_clear(KEY_RFKILL); break;
491 case 0xb5: asus_map_key_clear(KEY_CALC); break;
492 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
493 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
494
495 /* ASUS touchpad toggle */
496 case 0x6b: asus_map_key_clear(KEY_F21); break;
497
498 /* ROG key */
499 case 0x38: asus_map_key_clear(KEY_PROG1); break;
500
501 /* Fn+C ASUS Splendid */
502 case 0xba: asus_map_key_clear(KEY_PROG2); break;
503
504 /* Fn+Space Power4Gear Hybrid */
505 case 0x5c: asus_map_key_clear(KEY_PROG3); break;
506
507 default:
508 /* ASUS lazily declares 256 usages, ignore the rest,
509 * as some make the keyboard appear as a pointer device. */
510 return -1;
511 }
512
513 /*
514 * Check and enable backlight only on devices with UsagePage ==
515 * 0xff31 to avoid initializing the keyboard firmware multiple
516 * times on devices with multiple HID descriptors but same
517 * PID/VID.
518 */
519 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
520 drvdata->enable_backlight = true;
521
522 return 1;
523 }
524
525 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
526 set_bit(EV_REP, hi->input->evbit);
527 switch (usage->hid & HID_USAGE) {
528 case 0xff01: asus_map_key_clear(BTN_1); break;
529 case 0xff02: asus_map_key_clear(BTN_2); break;
530 case 0xff03: asus_map_key_clear(BTN_3); break;
531 case 0xff04: asus_map_key_clear(BTN_4); break;
532 case 0xff05: asus_map_key_clear(BTN_5); break;
533 case 0xff06: asus_map_key_clear(BTN_6); break;
534 case 0xff07: asus_map_key_clear(BTN_7); break;
535 case 0xff08: asus_map_key_clear(BTN_8); break;
536 case 0xff09: asus_map_key_clear(BTN_9); break;
537 case 0xff0a: asus_map_key_clear(BTN_A); break;
538 case 0xff0b: asus_map_key_clear(BTN_B); break;
539 case 0x00f1: asus_map_key_clear(KEY_WLAN); break;
540 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
541 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
542 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break;
543 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break;
544 case 0x00f8: asus_map_key_clear(KEY_PROG1); break;
545 default:
546 return 0;
547 }
548
549 return 1;
550 }
551
552 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
553 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
554 switch (usage->hid & HID_USAGE) {
555 case 0xe2: /* Mute */
556 case 0xe9: /* Volume up */
557 case 0xea: /* Volume down */
558 return 0;
559 default:
560 /* Ignore dummy Consumer usages which make the
561 * keyboard incorrectly appear as a pointer device.
562 */
563 return -1;
564 }
565 }
566
567 return 0;
568 }
569
570 static int asus_start_multitouch(struct hid_device *hdev)
571 {
572 int ret;
573 const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
574 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
575
576 if (!dmabuf) {
577 ret = -ENOMEM;
578 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
579 return ret;
580 }
581
582 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
583 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
584
585 kfree(dmabuf);
586
587 if (ret != sizeof(buf)) {
588 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
589 return ret;
590 }
591
592 return 0;
593 }
594
595 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
596 {
597 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
598
599 if (drvdata->tp)
600 return asus_start_multitouch(hdev);
601
602 return 0;
603 }
604
605 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
606 {
607 int ret;
608 struct asus_drvdata *drvdata;
609
610 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
611 if (drvdata == NULL) {
612 hid_err(hdev, "Can't alloc Asus descriptor\n");
613 return -ENOMEM;
614 }
615
616 hid_set_drvdata(hdev, drvdata);
617
618 drvdata->quirks = id->driver_data;
619
620 if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
621 drvdata->tp = &asus_i2c_tp;
622
623 if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
624 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
625
626 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
627 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
628 /*
629 * The T100HA uses the same USB-ids as the T100TAF and
630 * the T200TA uses the same USB-ids as the T100TA, while
631 * both have different max x/y values as the T100TA[F].
632 */
633 if (dmi_match(DMI_PRODUCT_NAME, "T100HAN"))
634 drvdata->tp = &asus_t100ha_tp;
635 else if (dmi_match(DMI_PRODUCT_NAME, "T200TA"))
636 drvdata->tp = &asus_t200ta_tp;
637 else
638 drvdata->tp = &asus_t100ta_tp;
639 }
640 }
641
642 if (drvdata->quirks & QUIRK_T100CHI) {
643 /*
644 * All functionality is on a single HID interface and for
645 * userspace the touchpad must be a separate input_dev.
646 */
647 hdev->quirks |= HID_QUIRK_MULTI_INPUT |
648 HID_QUIRK_NO_EMPTY_INPUT;
649 drvdata->tp = &asus_t100chi_tp;
650 }
651
652 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
653 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
654
655 ret = hid_parse(hdev);
656 if (ret) {
657 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
658 return ret;
659 }
660
661 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
662 if (ret) {
663 hid_err(hdev, "Asus hw start failed: %d\n", ret);
664 return ret;
665 }
666
667 if (!drvdata->input) {
668 hid_err(hdev, "Asus input not registered\n");
669 ret = -ENOMEM;
670 goto err_stop_hw;
671 }
672
673 if (drvdata->tp) {
674 drvdata->input->name = "Asus TouchPad";
675 } else {
676 drvdata->input->name = "Asus Keyboard";
677 }
678
679 if (drvdata->tp) {
680 ret = asus_start_multitouch(hdev);
681 if (ret)
682 goto err_stop_hw;
683 }
684
685 return 0;
686 err_stop_hw:
687 hid_hw_stop(hdev);
688 return ret;
689 }
690
691 static void asus_remove(struct hid_device *hdev)
692 {
693 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
694
695 if (drvdata->kbd_backlight) {
696 drvdata->kbd_backlight->removed = true;
697 cancel_work_sync(&drvdata->kbd_backlight->work);
698 }
699
700 hid_hw_stop(hdev);
701 }
702
703 static const __u8 asus_g752_fixed_rdesc[] = {
704 0x19, 0x00, /* Usage Minimum (0x00) */
705 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */
706 };
707
708 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
709 unsigned int *rsize)
710 {
711 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
712
713 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
714 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
715 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
716 rdesc[55] = 0xdd;
717 }
718 /* For the T100TA/T200TA keyboard dock */
719 if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
720 (*rsize == 76 || *rsize == 101) &&
721 rdesc[73] == 0x81 && rdesc[74] == 0x01) {
722 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
723 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
724 }
725 /* For the T100CHI keyboard dock */
726 if (drvdata->quirks & QUIRK_T100CHI &&
727 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) {
728 /*
729 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
730 * (FFh) and clear the flags in the Input() byte.
731 * Note the descriptor has a bogus 0 byte at the end so we
732 * only need 1 extra byte.
733 */
734 *rsize = 404;
735 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
736 if (!rdesc)
737 return NULL;
738
739 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n");
740 memmove(rdesc + 392, rdesc + 390, 12);
741 rdesc[388] = 0x19;
742 rdesc[389] = 0x00;
743 rdesc[390] = 0x29;
744 rdesc[391] = 0xff;
745 rdesc[402] = 0x00;
746 }
747 if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
748 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
749 /* report is missing usage mninum and maximum */
750 __u8 *new_rdesc;
751 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
752
753 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
754 if (new_rdesc == NULL)
755 return rdesc;
756
757 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
758 /* copy the valid part */
759 memcpy(new_rdesc, rdesc, 61);
760 /* insert missing part */
761 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
762 /* copy remaining data */
763 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
764
765 *rsize = new_size;
766 rdesc = new_rdesc;
767 }
768
769 return rdesc;
770 }
771
772 static const struct hid_device_id asus_devices[] = {
773 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
774 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
775 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
776 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
777 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
778 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
779 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
780 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
781 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
782 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
783 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
784 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
785 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
786 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
787 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
788 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
789 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
790 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
791 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
792 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
793 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
794
795 { }
796 };
797 MODULE_DEVICE_TABLE(hid, asus_devices);
798
799 static struct hid_driver asus_driver = {
800 .name = "asus",
801 .id_table = asus_devices,
802 .report_fixup = asus_report_fixup,
803 .probe = asus_probe,
804 .remove = asus_remove,
805 .input_mapping = asus_input_mapping,
806 .input_configured = asus_input_configured,
807 #ifdef CONFIG_PM
808 .reset_resume = asus_reset_resume,
809 #endif
810 .raw_event = asus_raw_event
811 };
812 module_hid_driver(asus_driver);
813
814 MODULE_LICENSE("GPL");
Linux with added FPC-III support