HID: sony: Print reversed MAC address via %pMR
[muen/linux.git] / drivers / hid / hid-asus.c
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/hid.h>
30 #include <linux/module.h>
31 #include <linux/input/mt.h>
32 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
33
34 #include "hid-ids.h"
35
36 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
37 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
38 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
39 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
40 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
41
42 #define T100_TPAD_INTF 2
43
44 #define T100CHI_MOUSE_REPORT_ID 0x06
45 #define FEATURE_REPORT_ID 0x0d
46 #define INPUT_REPORT_ID 0x5d
47 #define FEATURE_KBD_REPORT_ID 0x5a
48 #define FEATURE_KBD_REPORT_SIZE 16
49
50 #define SUPPORT_KBD_BACKLIGHT BIT(0)
51
52 #define MAX_TOUCH_MAJOR 8
53 #define MAX_PRESSURE 128
54
55 #define BTN_LEFT_MASK 0x01
56 #define CONTACT_TOOL_TYPE_MASK 0x80
57 #define CONTACT_X_MSB_MASK 0xf0
58 #define CONTACT_Y_MSB_MASK 0x0f
59 #define CONTACT_TOUCH_MAJOR_MASK 0x07
60 #define CONTACT_PRESSURE_MASK 0x7f
61
62 #define QUIRK_FIX_NOTEBOOK_REPORT       BIT(0)
63 #define QUIRK_NO_INIT_REPORTS           BIT(1)
64 #define QUIRK_SKIP_INPUT_MAPPING        BIT(2)
65 #define QUIRK_IS_MULTITOUCH             BIT(3)
66 #define QUIRK_NO_CONSUMER_USAGES        BIT(4)
67 #define QUIRK_USE_KBD_BACKLIGHT         BIT(5)
68 #define QUIRK_T100_KEYBOARD             BIT(6)
69 #define QUIRK_T100CHI                   BIT(7)
70 #define QUIRK_G752_KEYBOARD             BIT(8)
71
72 #define I2C_KEYBOARD_QUIRKS                     (QUIRK_FIX_NOTEBOOK_REPORT | \
73                                                  QUIRK_NO_INIT_REPORTS | \
74                                                  QUIRK_NO_CONSUMER_USAGES)
75 #define I2C_TOUCHPAD_QUIRKS                     (QUIRK_NO_INIT_REPORTS | \
76                                                  QUIRK_SKIP_INPUT_MAPPING | \
77                                                  QUIRK_IS_MULTITOUCH)
78
79 #define TRKID_SGN       ((TRKID_MAX + 1) >> 1)
80
81 struct asus_kbd_leds {
82         struct led_classdev cdev;
83         struct hid_device *hdev;
84         struct work_struct work;
85         unsigned int brightness;
86         bool removed;
87 };
88
89 struct asus_touchpad_info {
90         int max_x;
91         int max_y;
92         int res_x;
93         int res_y;
94         int contact_size;
95         int max_contacts;
96 };
97
98 struct asus_drvdata {
99         unsigned long quirks;
100         struct input_dev *input;
101         struct asus_kbd_leds *kbd_backlight;
102         const struct asus_touchpad_info *tp;
103         bool enable_backlight;
104 };
105
106 static const struct asus_touchpad_info asus_i2c_tp = {
107         .max_x = 2794,
108         .max_y = 1758,
109         .contact_size = 5,
110         .max_contacts = 5,
111 };
112
113 static const struct asus_touchpad_info asus_t100ta_tp = {
114         .max_x = 2240,
115         .max_y = 1120,
116         .res_x = 30, /* units/mm */
117         .res_y = 27, /* units/mm */
118         .contact_size = 5,
119         .max_contacts = 5,
120 };
121
122 static const struct asus_touchpad_info asus_t100chi_tp = {
123         .max_x = 2640,
124         .max_y = 1320,
125         .res_x = 31, /* units/mm */
126         .res_y = 29, /* units/mm */
127         .contact_size = 3,
128         .max_contacts = 4,
129 };
130
131 static void asus_report_contact_down(struct asus_drvdata *drvdat,
132                 int toolType, u8 *data)
133 {
134         struct input_dev *input = drvdat->input;
135         int touch_major, pressure, x, y;
136
137         x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
138         y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
139
140         input_report_abs(input, ABS_MT_POSITION_X, x);
141         input_report_abs(input, ABS_MT_POSITION_Y, y);
142
143         if (drvdat->tp->contact_size < 5)
144                 return;
145
146         if (toolType == MT_TOOL_PALM) {
147                 touch_major = MAX_TOUCH_MAJOR;
148                 pressure = MAX_PRESSURE;
149         } else {
150                 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
151                 pressure = data[4] & CONTACT_PRESSURE_MASK;
152         }
153
154         input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
155         input_report_abs(input, ABS_MT_PRESSURE, pressure);
156 }
157
158 /* Required for Synaptics Palm Detection */
159 static void asus_report_tool_width(struct asus_drvdata *drvdat)
160 {
161         struct input_mt *mt = drvdat->input->mt;
162         struct input_mt_slot *oldest;
163         int oldid, count, i;
164
165         if (drvdat->tp->contact_size < 5)
166                 return;
167
168         oldest = NULL;
169         oldid = mt->trkid;
170         count = 0;
171
172         for (i = 0; i < mt->num_slots; ++i) {
173                 struct input_mt_slot *ps = &mt->slots[i];
174                 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
175
176                 if (id < 0)
177                         continue;
178                 if ((id - oldid) & TRKID_SGN) {
179                         oldest = ps;
180                         oldid = id;
181                 }
182                 count++;
183         }
184
185         if (oldest) {
186                 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
187                         input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
188         }
189 }
190
191 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
192 {
193         int i, toolType = MT_TOOL_FINGER;
194         u8 *contactData = data + 2;
195
196         if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts)
197                 return 0;
198
199         for (i = 0; i < drvdat->tp->max_contacts; i++) {
200                 bool down = !!(data[1] & BIT(i+3));
201
202                 if (drvdat->tp->contact_size >= 5)
203                         toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
204                                                 MT_TOOL_PALM : MT_TOOL_FINGER;
205
206                 input_mt_slot(drvdat->input, i);
207                 input_mt_report_slot_state(drvdat->input, toolType, down);
208
209                 if (down) {
210                         asus_report_contact_down(drvdat, toolType, contactData);
211                         contactData += drvdat->tp->contact_size;
212                 }
213         }
214
215         input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
216         asus_report_tool_width(drvdat);
217
218         input_mt_sync_frame(drvdat->input);
219         input_sync(drvdat->input);
220
221         return 1;
222 }
223
224 static int asus_raw_event(struct hid_device *hdev,
225                 struct hid_report *report, u8 *data, int size)
226 {
227         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
228
229         if (drvdata->tp && data[0] == INPUT_REPORT_ID)
230                 return asus_report_input(drvdata, data, size);
231
232         return 0;
233 }
234
235 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
236 {
237         unsigned char *dmabuf;
238         int ret;
239
240         dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
241         if (!dmabuf)
242                 return -ENOMEM;
243
244         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
245                                  buf_size, HID_FEATURE_REPORT,
246                                  HID_REQ_SET_REPORT);
247         kfree(dmabuf);
248
249         return ret;
250 }
251
252 static int asus_kbd_init(struct hid_device *hdev)
253 {
254         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
255                      0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
256         int ret;
257
258         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
259         if (ret < 0)
260                 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
261
262         return ret;
263 }
264
265 static int asus_kbd_get_functions(struct hid_device *hdev,
266                                   unsigned char *kbd_func)
267 {
268         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
269         u8 *readbuf;
270         int ret;
271
272         ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
273         if (ret < 0) {
274                 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
275                 return ret;
276         }
277
278         readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
279         if (!readbuf)
280                 return -ENOMEM;
281
282         ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
283                                  FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
284                                  HID_REQ_GET_REPORT);
285         if (ret < 0) {
286                 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
287                 kfree(readbuf);
288                 return ret;
289         }
290
291         *kbd_func = readbuf[6];
292
293         kfree(readbuf);
294         return ret;
295 }
296
297 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
298                                    enum led_brightness brightness)
299 {
300         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
301                                                  cdev);
302         if (led->brightness == brightness)
303                 return;
304
305         led->brightness = brightness;
306         schedule_work(&led->work);
307 }
308
309 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
310 {
311         struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
312                                                  cdev);
313
314         return led->brightness;
315 }
316
317 static void asus_kbd_backlight_work(struct work_struct *work)
318 {
319         struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
320         u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
321         int ret;
322
323         if (led->removed)
324                 return;
325
326         buf[4] = led->brightness;
327
328         ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
329         if (ret < 0)
330                 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
331 }
332
333 static int asus_kbd_register_leds(struct hid_device *hdev)
334 {
335         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
336         unsigned char kbd_func;
337         int ret;
338
339         /* Initialize keyboard */
340         ret = asus_kbd_init(hdev);
341         if (ret < 0)
342                 return ret;
343
344         /* Get keyboard functions */
345         ret = asus_kbd_get_functions(hdev, &kbd_func);
346         if (ret < 0)
347                 return ret;
348
349         /* Check for backlight support */
350         if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
351                 return -ENODEV;
352
353         drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
354                                               sizeof(struct asus_kbd_leds),
355                                               GFP_KERNEL);
356         if (!drvdata->kbd_backlight)
357                 return -ENOMEM;
358
359         drvdata->kbd_backlight->removed = false;
360         drvdata->kbd_backlight->brightness = 0;
361         drvdata->kbd_backlight->hdev = hdev;
362         drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
363         drvdata->kbd_backlight->cdev.max_brightness = 3;
364         drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
365         drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
366         INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
367
368         ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
369         if (ret < 0) {
370                 /* No need to have this still around */
371                 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
372         }
373
374         return ret;
375 }
376
377 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
378 {
379         struct input_dev *input = hi->input;
380         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
381
382         /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
383         if (drvdata->quirks & QUIRK_T100CHI &&
384             hi->report->id != T100CHI_MOUSE_REPORT_ID)
385                 return 0;
386
387         if (drvdata->tp) {
388                 int ret;
389
390                 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
391                                      drvdata->tp->max_x, 0, 0);
392                 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
393                                      drvdata->tp->max_y, 0, 0);
394                 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
395                 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
396
397                 if (drvdata->tp->contact_size >= 5) {
398                         input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
399                                              MAX_TOUCH_MAJOR, 0, 0);
400                         input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
401                                              MAX_TOUCH_MAJOR, 0, 0);
402                         input_set_abs_params(input, ABS_MT_PRESSURE, 0,
403                                               MAX_PRESSURE, 0, 0);
404                 }
405
406                 __set_bit(BTN_LEFT, input->keybit);
407                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
408
409                 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
410                                           INPUT_MT_POINTER);
411
412                 if (ret) {
413                         hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
414                         return ret;
415                 }
416         }
417
418         drvdata->input = input;
419
420         if (drvdata->enable_backlight && asus_kbd_register_leds(hdev))
421                 hid_warn(hdev, "Failed to initialize backlight.\n");
422
423         return 0;
424 }
425
426 #define asus_map_key_clear(c)   hid_map_usage_clear(hi, usage, bit, \
427                                                     max, EV_KEY, (c))
428 static int asus_input_mapping(struct hid_device *hdev,
429                 struct hid_input *hi, struct hid_field *field,
430                 struct hid_usage *usage, unsigned long **bit,
431                 int *max)
432 {
433         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
434
435         if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
436                 /* Don't map anything from the HID report.
437                  * We do it all manually in asus_input_configured
438                  */
439                 return -1;
440         }
441
442         /*
443          * Ignore a bunch of bogus collections in the T100CHI descriptor.
444          * This avoids a bunch of non-functional hid_input devices getting
445          * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
446          */
447         if (drvdata->quirks & QUIRK_T100CHI) {
448                 if (field->application == (HID_UP_GENDESK | 0x0080) ||
449                     usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
450                     usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
451                     usage->hid == (HID_UP_GENDEVCTRLS | 0x0026))
452                         return -1;
453                 /*
454                  * We use the hid_input for the mouse report for the touchpad,
455                  * keep the left button, to avoid the core removing it.
456                  */
457                 if (field->application == HID_GD_MOUSE &&
458                     usage->hid != (HID_UP_BUTTON | 1))
459                         return -1;
460         }
461
462         /* ASUS-specific keyboard hotkeys */
463         if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
464                 set_bit(EV_REP, hi->input->evbit);
465                 switch (usage->hid & HID_USAGE) {
466                 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);      break;
467                 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);                break;
468                 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);         break;
469                 case 0x6c: asus_map_key_clear(KEY_SLEEP);               break;
470                 case 0x82: asus_map_key_clear(KEY_CAMERA);              break;
471                 case 0x88: asus_map_key_clear(KEY_RFKILL);                      break;
472                 case 0xb5: asus_map_key_clear(KEY_CALC);                        break;
473                 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);          break;
474                 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);                break;
475
476                 /* ASUS touchpad toggle */
477                 case 0x6b: asus_map_key_clear(KEY_F21);                 break;
478
479                 /* ROG key */
480                 case 0x38: asus_map_key_clear(KEY_PROG1);               break;
481
482                 /* Fn+C ASUS Splendid */
483                 case 0xba: asus_map_key_clear(KEY_PROG2);               break;
484
485                 /* Fn+Space Power4Gear Hybrid */
486                 case 0x5c: asus_map_key_clear(KEY_PROG3);               break;
487
488                 default:
489                         /* ASUS lazily declares 256 usages, ignore the rest,
490                          * as some make the keyboard appear as a pointer device. */
491                         return -1;
492                 }
493
494                 /*
495                  * Check and enable backlight only on devices with UsagePage ==
496                  * 0xff31 to avoid initializing the keyboard firmware multiple
497                  * times on devices with multiple HID descriptors but same
498                  * PID/VID.
499                  */
500                 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
501                         drvdata->enable_backlight = true;
502
503                 return 1;
504         }
505
506         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
507                 set_bit(EV_REP, hi->input->evbit);
508                 switch (usage->hid & HID_USAGE) {
509                 case 0xff01: asus_map_key_clear(BTN_1); break;
510                 case 0xff02: asus_map_key_clear(BTN_2); break;
511                 case 0xff03: asus_map_key_clear(BTN_3); break;
512                 case 0xff04: asus_map_key_clear(BTN_4); break;
513                 case 0xff05: asus_map_key_clear(BTN_5); break;
514                 case 0xff06: asus_map_key_clear(BTN_6); break;
515                 case 0xff07: asus_map_key_clear(BTN_7); break;
516                 case 0xff08: asus_map_key_clear(BTN_8); break;
517                 case 0xff09: asus_map_key_clear(BTN_9); break;
518                 case 0xff0a: asus_map_key_clear(BTN_A); break;
519                 case 0xff0b: asus_map_key_clear(BTN_B); break;
520                 case 0x00f1: asus_map_key_clear(KEY_WLAN);      break;
521                 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN);    break;
522                 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP);      break;
523                 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF);       break;
524                 case 0x00f7: asus_map_key_clear(KEY_CAMERA);    break;
525                 case 0x00f8: asus_map_key_clear(KEY_PROG1);     break;
526                 default:
527                         return 0;
528                 }
529
530                 return 1;
531         }
532
533         if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
534                 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
535                 switch (usage->hid & HID_USAGE) {
536                 case 0xe2: /* Mute */
537                 case 0xe9: /* Volume up */
538                 case 0xea: /* Volume down */
539                         return 0;
540                 default:
541                         /* Ignore dummy Consumer usages which make the
542                          * keyboard incorrectly appear as a pointer device.
543                          */
544                         return -1;
545                 }
546         }
547
548         return 0;
549 }
550
551 static int asus_start_multitouch(struct hid_device *hdev)
552 {
553         int ret;
554         const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
555         unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
556
557         if (!dmabuf) {
558                 ret = -ENOMEM;
559                 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
560                 return ret;
561         }
562
563         ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
564                                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
565
566         kfree(dmabuf);
567
568         if (ret != sizeof(buf)) {
569                 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
570                 return ret;
571         }
572
573         return 0;
574 }
575
576 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
577 {
578         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
579
580         if (drvdata->tp)
581                 return asus_start_multitouch(hdev);
582
583         return 0;
584 }
585
586 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
587 {
588         int ret;
589         struct asus_drvdata *drvdata;
590
591         drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
592         if (drvdata == NULL) {
593                 hid_err(hdev, "Can't alloc Asus descriptor\n");
594                 return -ENOMEM;
595         }
596
597         hid_set_drvdata(hdev, drvdata);
598
599         drvdata->quirks = id->driver_data;
600
601         if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
602                 drvdata->tp = &asus_i2c_tp;
603
604         if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
605                 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
606
607                 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
608                         drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
609                         drvdata->tp = &asus_t100ta_tp;
610                 }
611         }
612
613         if (drvdata->quirks & QUIRK_T100CHI) {
614                 /*
615                  * All functionality is on a single HID interface and for
616                  * userspace the touchpad must be a separate input_dev.
617                  */
618                 hdev->quirks |= HID_QUIRK_MULTI_INPUT |
619                                 HID_QUIRK_NO_EMPTY_INPUT;
620                 drvdata->tp = &asus_t100chi_tp;
621         }
622
623         if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
624                 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
625
626         ret = hid_parse(hdev);
627         if (ret) {
628                 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
629                 return ret;
630         }
631
632         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
633         if (ret) {
634                 hid_err(hdev, "Asus hw start failed: %d\n", ret);
635                 return ret;
636         }
637
638         if (!drvdata->input) {
639                 hid_err(hdev, "Asus input not registered\n");
640                 ret = -ENOMEM;
641                 goto err_stop_hw;
642         }
643
644         if (drvdata->tp) {
645                 drvdata->input->name = "Asus TouchPad";
646         } else {
647                 drvdata->input->name = "Asus Keyboard";
648         }
649
650         if (drvdata->tp) {
651                 ret = asus_start_multitouch(hdev);
652                 if (ret)
653                         goto err_stop_hw;
654         }
655
656         return 0;
657 err_stop_hw:
658         hid_hw_stop(hdev);
659         return ret;
660 }
661
662 static void asus_remove(struct hid_device *hdev)
663 {
664         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
665
666         if (drvdata->kbd_backlight) {
667                 drvdata->kbd_backlight->removed = true;
668                 cancel_work_sync(&drvdata->kbd_backlight->work);
669         }
670
671         hid_hw_stop(hdev);
672 }
673
674 static const __u8 asus_g752_fixed_rdesc[] = {
675         0x19, 0x00,                     /*   Usage Minimum (0x00)       */
676         0x2A, 0xFF, 0x00,               /*   Usage Maximum (0xFF)       */
677 };
678
679 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
680                 unsigned int *rsize)
681 {
682         struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
683
684         if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
685                         *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
686                 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
687                 rdesc[55] = 0xdd;
688         }
689         /* For the T100TA keyboard dock */
690         if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
691                  *rsize == 76 && rdesc[73] == 0x81 && rdesc[74] == 0x01) {
692                 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
693                 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
694         }
695         /* For the T100CHI keyboard dock */
696         if (drvdata->quirks & QUIRK_T100CHI &&
697                  *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) {
698                 /*
699                  * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
700                  * (FFh) and clear the flags in the Input() byte.
701                  * Note the descriptor has a bogus 0 byte at the end so we
702                  * only need 1 extra byte.
703                  */
704                 *rsize = 404;
705                 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
706                 if (!rdesc)
707                         return NULL;
708
709                 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n");
710                 memmove(rdesc + 392, rdesc + 390, 12);
711                 rdesc[388] = 0x19;
712                 rdesc[389] = 0x00;
713                 rdesc[390] = 0x29;
714                 rdesc[391] = 0xff;
715                 rdesc[402] = 0x00;
716         }
717         if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
718                  *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
719                 /* report is missing usage mninum and maximum */
720                 __u8 *new_rdesc;
721                 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
722
723                 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
724                 if (new_rdesc == NULL)
725                         return rdesc;
726
727                 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
728                 /* copy the valid part */
729                 memcpy(new_rdesc, rdesc, 61);
730                 /* insert missing part */
731                 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
732                 /* copy remaining data */
733                 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
734
735                 *rsize = new_size;
736                 rdesc = new_rdesc;
737         }
738
739         return rdesc;
740 }
741
742 static const struct hid_device_id asus_devices[] = {
743         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
744                 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
745         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
746                 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
747         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
748                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
749         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
750                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
751         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
752                 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
753         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
754                 USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD),
755           QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
756         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
757         { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
758         { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
759         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
760                 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
761
762         { }
763 };
764 MODULE_DEVICE_TABLE(hid, asus_devices);
765
766 static struct hid_driver asus_driver = {
767         .name                   = "asus",
768         .id_table               = asus_devices,
769         .report_fixup           = asus_report_fixup,
770         .probe                  = asus_probe,
771         .remove                 = asus_remove,
772         .input_mapping          = asus_input_mapping,
773         .input_configured       = asus_input_configured,
774 #ifdef CONFIG_PM
775         .reset_resume           = asus_reset_resume,
776 #endif
777         .raw_event              = asus_raw_event
778 };
779 module_hid_driver(asus_driver);
780
781 MODULE_LICENSE("GPL");