1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * HID driver for Asus notebook built-in keyboard.
4 * Fixes small logical maximum to match usage maximum.
5 *
6 * Currently supported devices are:
7 * EeeBook X205TA
8 * VivoBook E200HA
9 *
10 * Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
11 *
12 * This module based on hid-ortek by
13 * Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
14 * Copyright (c) 2011 Jiri Kosina
15 *
16 * This module has been updated to add support for Asus i2c touchpad.
17 *
18 * Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
19 * Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
20 * Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
21 */
22
23/*
24 */
25
26#include <linux/dmi.h>
27#include <linux/hid.h>
28#include <linux/module.h>
29#include <linux/platform_data/x86/asus-wmi.h>
30#include <linux/input/mt.h>
31#include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
32#include <linux/power_supply.h>
33#include <linux/leds.h>
34
35#include "hid-ids.h"
36
37MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
38MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
39MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
40MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
41MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
42
43#define T100_TPAD_INTF 2
44#define MEDION_E1239T_TPAD_INTF 1
45
46#define E1239T_TP_TOGGLE_REPORT_ID 0x05
47#define T100CHI_MOUSE_REPORT_ID 0x06
48#define FEATURE_REPORT_ID 0x0d
49#define INPUT_REPORT_ID 0x5d
50#define FEATURE_KBD_REPORT_ID 0x5a
51#define FEATURE_KBD_REPORT_SIZE 16
52#define FEATURE_KBD_LED_REPORT_ID1 0x5d
53#define FEATURE_KBD_LED_REPORT_ID2 0x5e
54
55#define SUPPORT_KBD_BACKLIGHT BIT(0)
56
57#define MAX_TOUCH_MAJOR 8
58#define MAX_PRESSURE 128
59
60#define BTN_LEFT_MASK 0x01
61#define CONTACT_TOOL_TYPE_MASK 0x80
62#define CONTACT_X_MSB_MASK 0xf0
63#define CONTACT_Y_MSB_MASK 0x0f
64#define CONTACT_TOUCH_MAJOR_MASK 0x07
65#define CONTACT_PRESSURE_MASK 0x7f
66
67#define BATTERY_REPORT_ID (0x03)
68#define BATTERY_REPORT_SIZE (1 + 8)
69#define BATTERY_LEVEL_MAX ((u8)255)
70#define BATTERY_STAT_DISCONNECT (0)
71#define BATTERY_STAT_CHARGING (1)
72#define BATTERY_STAT_FULL (2)
73
74#define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
75#define QUIRK_NO_INIT_REPORTS BIT(1)
76#define QUIRK_SKIP_INPUT_MAPPING BIT(2)
77#define QUIRK_IS_MULTITOUCH BIT(3)
78#define QUIRK_NO_CONSUMER_USAGES BIT(4)
79#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
80#define QUIRK_T100_KEYBOARD BIT(6)
81#define QUIRK_T100CHI BIT(7)
82#define QUIRK_G752_KEYBOARD BIT(8)
83#define QUIRK_T90CHI BIT(9)
84#define QUIRK_MEDION_E1239T BIT(10)
85#define QUIRK_ROG_NKEY_KEYBOARD BIT(11)
86#define QUIRK_ROG_CLAYMORE_II_KEYBOARD BIT(12)
87
88#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
89 QUIRK_NO_INIT_REPORTS | \
90 QUIRK_NO_CONSUMER_USAGES)
91#define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
92 QUIRK_SKIP_INPUT_MAPPING | \
93 QUIRK_IS_MULTITOUCH)
94
95#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
96
97struct asus_kbd_leds {
98 struct led_classdev cdev;
99 struct hid_device *hdev;
100 struct work_struct work;
101 unsigned int brightness;
102 spinlock_t lock;
103 bool removed;
104};
105
106struct asus_touchpad_info {
107 int max_x;
108 int max_y;
109 int res_x;
110 int res_y;
111 int contact_size;
112 int max_contacts;
113 int report_size;
114};
115
116struct asus_drvdata {
117 unsigned long quirks;
118 struct hid_device *hdev;
119 struct input_dev *input;
120 struct input_dev *tp_kbd_input;
121 struct asus_kbd_leds *kbd_backlight;
122 const struct asus_touchpad_info *tp;
123 bool enable_backlight;
124 struct power_supply *battery;
125 struct power_supply_desc battery_desc;
126 int battery_capacity;
127 int battery_stat;
128 bool battery_in_query;
129 unsigned long battery_next_query;
130};
131
132static int asus_report_battery(struct asus_drvdata *, u8 *, int);
133
134static const struct asus_touchpad_info asus_i2c_tp = {
135 .max_x = 2794,
136 .max_y = 1758,
137 .contact_size = 5,
138 .max_contacts = 5,
139 .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
140};
141
142static const struct asus_touchpad_info asus_t100ta_tp = {
143 .max_x = 2240,
144 .max_y = 1120,
145 .res_x = 30, /* units/mm */
146 .res_y = 27, /* units/mm */
147 .contact_size = 5,
148 .max_contacts = 5,
149 .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
150};
151
152static const struct asus_touchpad_info asus_t100ha_tp = {
153 .max_x = 2640,
154 .max_y = 1320,
155 .res_x = 30, /* units/mm */
156 .res_y = 29, /* units/mm */
157 .contact_size = 5,
158 .max_contacts = 5,
159 .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
160};
161
162static const struct asus_touchpad_info asus_t200ta_tp = {
163 .max_x = 3120,
164 .max_y = 1716,
165 .res_x = 30, /* units/mm */
166 .res_y = 28, /* units/mm */
167 .contact_size = 5,
168 .max_contacts = 5,
169 .report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
170};
171
172static const struct asus_touchpad_info asus_t100chi_tp = {
173 .max_x = 2640,
174 .max_y = 1320,
175 .res_x = 31, /* units/mm */
176 .res_y = 29, /* units/mm */
177 .contact_size = 3,
178 .max_contacts = 4,
179 .report_size = 15 /* 2 byte header + 3 * 4 + 1 byte footer */,
180};
181
182static const struct asus_touchpad_info medion_e1239t_tp = {
183 .max_x = 2640,
184 .max_y = 1380,
185 .res_x = 29, /* units/mm */
186 .res_y = 28, /* units/mm */
187 .contact_size = 5,
188 .max_contacts = 5,
189 .report_size = 32 /* 2 byte header + 5 * 5 + 5 byte footer */,
190};
191
192static void asus_report_contact_down(struct asus_drvdata *drvdat,
193 int toolType, u8 *data)
194{
195 struct input_dev *input = drvdat->input;
196 int touch_major, pressure, x, y;
197
198 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
199 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
200
201 input_report_abs(dev: input, ABS_MT_POSITION_X, value: x);
202 input_report_abs(dev: input, ABS_MT_POSITION_Y, value: y);
203
204 if (drvdat->tp->contact_size < 5)
205 return;
206
207 if (toolType == MT_TOOL_PALM) {
208 touch_major = MAX_TOUCH_MAJOR;
209 pressure = MAX_PRESSURE;
210 } else {
211 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
212 pressure = data[4] & CONTACT_PRESSURE_MASK;
213 }
214
215 input_report_abs(dev: input, ABS_MT_TOUCH_MAJOR, value: touch_major);
216 input_report_abs(dev: input, ABS_MT_PRESSURE, value: pressure);
217}
218
219/* Required for Synaptics Palm Detection */
220static void asus_report_tool_width(struct asus_drvdata *drvdat)
221{
222 struct input_mt *mt = drvdat->input->mt;
223 struct input_mt_slot *oldest;
224 int oldid, i;
225
226 if (drvdat->tp->contact_size < 5)
227 return;
228
229 oldest = NULL;
230 oldid = mt->trkid;
231
232 for (i = 0; i < mt->num_slots; ++i) {
233 struct input_mt_slot *ps = &mt->slots[i];
234 int id = input_mt_get_value(slot: ps, ABS_MT_TRACKING_ID);
235
236 if (id < 0)
237 continue;
238 if ((id - oldid) & TRKID_SGN) {
239 oldest = ps;
240 oldid = id;
241 }
242 }
243
244 if (oldest) {
245 input_report_abs(dev: drvdat->input, ABS_TOOL_WIDTH,
246 value: input_mt_get_value(slot: oldest, ABS_MT_TOUCH_MAJOR));
247 }
248}
249
250static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
251{
252 int i, toolType = MT_TOOL_FINGER;
253 u8 *contactData = data + 2;
254
255 if (size != drvdat->tp->report_size)
256 return 0;
257
258 for (i = 0; i < drvdat->tp->max_contacts; i++) {
259 bool down = !!(data[1] & BIT(i+3));
260
261 if (drvdat->tp->contact_size >= 5)
262 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
263 MT_TOOL_PALM : MT_TOOL_FINGER;
264
265 input_mt_slot(dev: drvdat->input, slot: i);
266 input_mt_report_slot_state(dev: drvdat->input, tool_type: toolType, active: down);
267
268 if (down) {
269 asus_report_contact_down(drvdat, toolType, data: contactData);
270 contactData += drvdat->tp->contact_size;
271 }
272 }
273
274 input_report_key(dev: drvdat->input, BTN_LEFT, value: data[1] & BTN_LEFT_MASK);
275 asus_report_tool_width(drvdat);
276
277 input_mt_sync_frame(dev: drvdat->input);
278 input_sync(dev: drvdat->input);
279
280 return 1;
281}
282
283static int asus_e1239t_event(struct asus_drvdata *drvdat, u8 *data, int size)
284{
285 if (size != 3)
286 return 0;
287
288 /* Handle broken mute key which only sends press events */
289 if (!drvdat->tp &&
290 data[0] == 0x02 && data[1] == 0xe2 && data[2] == 0x00) {
291 input_report_key(dev: drvdat->input, KEY_MUTE, value: 1);
292 input_sync(dev: drvdat->input);
293 input_report_key(dev: drvdat->input, KEY_MUTE, value: 0);
294 input_sync(dev: drvdat->input);
295 return 1;
296 }
297
298 /* Handle custom touchpad toggle key which only sends press events */
299 if (drvdat->tp_kbd_input &&
300 data[0] == 0x05 && data[1] == 0x02 && data[2] == 0x28) {
301 input_report_key(dev: drvdat->tp_kbd_input, KEY_F21, value: 1);
302 input_sync(dev: drvdat->tp_kbd_input);
303 input_report_key(dev: drvdat->tp_kbd_input, KEY_F21, value: 0);
304 input_sync(dev: drvdat->tp_kbd_input);
305 return 1;
306 }
307
308 return 0;
309}
310
311static int asus_event(struct hid_device *hdev, struct hid_field *field,
312 struct hid_usage *usage, __s32 value)
313{
314 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
315 (usage->hid & HID_USAGE) != 0x00 &&
316 (usage->hid & HID_USAGE) != 0xff && !usage->type) {
317 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
318 usage->hid & HID_USAGE);
319 }
320
321 return 0;
322}
323
324static int asus_raw_event(struct hid_device *hdev,
325 struct hid_report *report, u8 *data, int size)
326{
327 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
328
329 if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
330 return asus_report_battery(drvdata, data, size);
331
332 if (drvdata->tp && data[0] == INPUT_REPORT_ID)
333 return asus_report_input(drvdat: drvdata, data, size);
334
335 if (drvdata->quirks & QUIRK_MEDION_E1239T)
336 return asus_e1239t_event(drvdat: drvdata, data, size);
337
338 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) {
339 /*
340 * Skip these report ID, the device emits a continuous stream associated
341 * with the AURA mode it is in which looks like an 'echo'.
342 */
343 if (report->id == FEATURE_KBD_LED_REPORT_ID1 ||
344 report->id == FEATURE_KBD_LED_REPORT_ID2) {
345 return -1;
346 /* Additional report filtering */
347 } else if (report->id == FEATURE_KBD_REPORT_ID) {
348 /*
349 * G14 and G15 send these codes on some keypresses with no
350 * discernable reason for doing so. We'll filter them out to avoid
351 * unmapped warning messages later.
352 */
353 if (data[1] == 0xea || data[1] == 0xec || data[1] == 0x02 ||
354 data[1] == 0x8a || data[1] == 0x9e) {
355 return -1;
356 }
357 }
358 if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
359 /*
360 * G713 and G733 send these codes on some keypresses, depending on
361 * the key pressed it can trigger a shutdown event if not caught.
362 */
363 if(data[0] == 0x02 && data[1] == 0x30) {
364 return -1;
365 }
366 }
367
368 }
369
370 if (drvdata->quirks & QUIRK_ROG_CLAYMORE_II_KEYBOARD) {
371 /*
372 * CLAYMORE II keyboard sends this packet when it goes to sleep
373 * this causes the whole system to go into suspend.
374 */
375
376 if(size == 2 && data[0] == 0x02 && data[1] == 0x00) {
377 return -1;
378 }
379 }
380
381 return 0;
382}
383
384static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
385{
386 unsigned char *dmabuf;
387 int ret;
388
389 dmabuf = kmemdup(p: buf, size: buf_size, GFP_KERNEL);
390 if (!dmabuf)
391 return -ENOMEM;
392
393 /*
394 * The report ID should be set from the incoming buffer due to LED and key
395 * interfaces having different pages
396 */
397 ret = hid_hw_raw_request(hdev, reportnum: buf[0], buf: dmabuf,
398 len: buf_size, rtype: HID_FEATURE_REPORT,
399 reqtype: HID_REQ_SET_REPORT);
400 kfree(objp: dmabuf);
401
402 return ret;
403}
404
405static int asus_kbd_init(struct hid_device *hdev)
406{
407 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
408 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
409 int ret;
410
411 ret = asus_kbd_set_report(hdev, buf, buf_size: sizeof(buf));
412 if (ret < 0)
413 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
414
415 return ret;
416}
417
418static int asus_kbd_get_functions(struct hid_device *hdev,
419 unsigned char *kbd_func)
420{
421 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
422 u8 *readbuf;
423 int ret;
424
425 ret = asus_kbd_set_report(hdev, buf, buf_size: sizeof(buf));
426 if (ret < 0) {
427 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
428 return ret;
429 }
430
431 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
432 if (!readbuf)
433 return -ENOMEM;
434
435 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, buf: readbuf,
436 FEATURE_KBD_REPORT_SIZE, rtype: HID_FEATURE_REPORT,
437 reqtype: HID_REQ_GET_REPORT);
438 if (ret < 0) {
439 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
440 kfree(objp: readbuf);
441 return ret;
442 }
443
444 *kbd_func = readbuf[6];
445
446 kfree(objp: readbuf);
447 return ret;
448}
449
450static int rog_nkey_led_init(struct hid_device *hdev)
451{
452 u8 buf_init_start[] = { FEATURE_KBD_LED_REPORT_ID1, 0xB9 };
453 u8 buf_init2[] = { FEATURE_KBD_LED_REPORT_ID1, 0x41, 0x53, 0x55, 0x53, 0x20,
454 0x54, 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
455 u8 buf_init3[] = { FEATURE_KBD_LED_REPORT_ID1,
456 0x05, 0x20, 0x31, 0x00, 0x08 };
457 int ret;
458
459 hid_info(hdev, "Asus initialise N-KEY Device");
460 /* The first message is an init start */
461 ret = asus_kbd_set_report(hdev, buf: buf_init_start, buf_size: sizeof(buf_init_start));
462 if (ret < 0) {
463 hid_warn(hdev, "Asus failed to send init start command: %d\n", ret);
464 return ret;
465 }
466 /* Followed by a string */
467 ret = asus_kbd_set_report(hdev, buf: buf_init2, buf_size: sizeof(buf_init2));
468 if (ret < 0) {
469 hid_warn(hdev, "Asus failed to send init command 1.0: %d\n", ret);
470 return ret;
471 }
472 /* Followed by a string */
473 ret = asus_kbd_set_report(hdev, buf: buf_init3, buf_size: sizeof(buf_init3));
474 if (ret < 0) {
475 hid_warn(hdev, "Asus failed to send init command 1.1: %d\n", ret);
476 return ret;
477 }
478
479 /* begin second report ID with same data */
480 buf_init2[0] = FEATURE_KBD_LED_REPORT_ID2;
481 buf_init3[0] = FEATURE_KBD_LED_REPORT_ID2;
482
483 ret = asus_kbd_set_report(hdev, buf: buf_init2, buf_size: sizeof(buf_init2));
484 if (ret < 0) {
485 hid_warn(hdev, "Asus failed to send init command 2.0: %d\n", ret);
486 return ret;
487 }
488 ret = asus_kbd_set_report(hdev, buf: buf_init3, buf_size: sizeof(buf_init3));
489 if (ret < 0)
490 hid_warn(hdev, "Asus failed to send init command 2.1: %d\n", ret);
491
492 return ret;
493}
494
495static void asus_schedule_work(struct asus_kbd_leds *led)
496{
497 unsigned long flags;
498
499 spin_lock_irqsave(&led->lock, flags);
500 if (!led->removed)
501 schedule_work(work: &led->work);
502 spin_unlock_irqrestore(lock: &led->lock, flags);
503}
504
505static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
506 enum led_brightness brightness)
507{
508 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
509 cdev);
510 unsigned long flags;
511
512 spin_lock_irqsave(&led->lock, flags);
513 led->brightness = brightness;
514 spin_unlock_irqrestore(lock: &led->lock, flags);
515
516 asus_schedule_work(led);
517}
518
519static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
520{
521 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
522 cdev);
523 enum led_brightness brightness;
524 unsigned long flags;
525
526 spin_lock_irqsave(&led->lock, flags);
527 brightness = led->brightness;
528 spin_unlock_irqrestore(lock: &led->lock, flags);
529
530 return brightness;
531}
532
533static void asus_kbd_backlight_work(struct work_struct *work)
534{
535 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
536 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
537 int ret;
538 unsigned long flags;
539
540 spin_lock_irqsave(&led->lock, flags);
541 buf[4] = led->brightness;
542 spin_unlock_irqrestore(lock: &led->lock, flags);
543
544 ret = asus_kbd_set_report(hdev: led->hdev, buf, buf_size: sizeof(buf));
545 if (ret < 0)
546 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
547}
548
549/* WMI-based keyboard backlight LED control (via asus-wmi driver) takes
550 * precedence. We only activate HID-based backlight control when the
551 * WMI control is not available.
552 */
553static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev)
554{
555 u32 value;
556 int ret;
557
558 if (!IS_ENABLED(CONFIG_ASUS_WMI))
559 return false;
560
561 ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS,
562 ASUS_WMI_DEVID_KBD_BACKLIGHT, arg1: 0, retval: &value);
563 hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value);
564 if (ret)
565 return false;
566
567 return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT);
568}
569
570static int asus_kbd_register_leds(struct hid_device *hdev)
571{
572 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
573 unsigned char kbd_func;
574 int ret;
575
576 if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
577 ret = rog_nkey_led_init(hdev);
578 if (ret < 0)
579 return ret;
580 } else {
581 /* Initialize keyboard */
582 ret = asus_kbd_init(hdev);
583 if (ret < 0)
584 return ret;
585
586 /* Get keyboard functions */
587 ret = asus_kbd_get_functions(hdev, kbd_func: &kbd_func);
588 if (ret < 0)
589 return ret;
590
591 /* Check for backlight support */
592 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
593 return -ENODEV;
594 }
595
596 drvdata->kbd_backlight = devm_kzalloc(dev: &hdev->dev,
597 size: sizeof(struct asus_kbd_leds),
598 GFP_KERNEL);
599 if (!drvdata->kbd_backlight)
600 return -ENOMEM;
601
602 drvdata->kbd_backlight->removed = false;
603 drvdata->kbd_backlight->brightness = 0;
604 drvdata->kbd_backlight->hdev = hdev;
605 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
606 drvdata->kbd_backlight->cdev.max_brightness = 3;
607 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
608 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
609 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
610 spin_lock_init(&drvdata->kbd_backlight->lock);
611
612 ret = devm_led_classdev_register(parent: &hdev->dev, led_cdev: &drvdata->kbd_backlight->cdev);
613 if (ret < 0) {
614 /* No need to have this still around */
615 devm_kfree(dev: &hdev->dev, p: drvdata->kbd_backlight);
616 }
617
618 return ret;
619}
620
621/*
622 * [0] REPORT_ID (same value defined in report descriptor)
623 * [1] rest battery level. range [0..255]
624 * [2]..[7] Bluetooth hardware address (MAC address)
625 * [8] charging status
626 * = 0 : AC offline / discharging
627 * = 1 : AC online / charging
628 * = 2 : AC online / fully charged
629 */
630static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
631{
632 u8 sts;
633 u8 lvl;
634 int val;
635
636 lvl = data[1];
637 sts = data[8];
638
639 drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
640
641 switch (sts) {
642 case BATTERY_STAT_CHARGING:
643 val = POWER_SUPPLY_STATUS_CHARGING;
644 break;
645 case BATTERY_STAT_FULL:
646 val = POWER_SUPPLY_STATUS_FULL;
647 break;
648 case BATTERY_STAT_DISCONNECT:
649 default:
650 val = POWER_SUPPLY_STATUS_DISCHARGING;
651 break;
652 }
653 drvdata->battery_stat = val;
654
655 return 0;
656}
657
658static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
659{
660 /* notify only the autonomous event by device */
661 if ((drvdata->battery_in_query == false) &&
662 (size == BATTERY_REPORT_SIZE))
663 power_supply_changed(psy: drvdata->battery);
664
665 return 0;
666}
667
668static int asus_battery_query(struct asus_drvdata *drvdata)
669{
670 u8 *buf;
671 int ret = 0;
672
673 buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
674 if (!buf)
675 return -ENOMEM;
676
677 drvdata->battery_in_query = true;
678 ret = hid_hw_raw_request(hdev: drvdata->hdev, BATTERY_REPORT_ID,
679 buf, BATTERY_REPORT_SIZE,
680 rtype: HID_INPUT_REPORT, reqtype: HID_REQ_GET_REPORT);
681 drvdata->battery_in_query = false;
682 if (ret == BATTERY_REPORT_SIZE)
683 ret = asus_parse_battery(drvdata, data: buf, BATTERY_REPORT_SIZE);
684 else
685 ret = -ENODATA;
686
687 kfree(objp: buf);
688
689 return ret;
690}
691
692static enum power_supply_property asus_battery_props[] = {
693 POWER_SUPPLY_PROP_STATUS,
694 POWER_SUPPLY_PROP_PRESENT,
695 POWER_SUPPLY_PROP_CAPACITY,
696 POWER_SUPPLY_PROP_SCOPE,
697 POWER_SUPPLY_PROP_MODEL_NAME,
698};
699
700#define QUERY_MIN_INTERVAL (60 * HZ) /* 60[sec] */
701
702static int asus_battery_get_property(struct power_supply *psy,
703 enum power_supply_property psp,
704 union power_supply_propval *val)
705{
706 struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
707 int ret = 0;
708
709 switch (psp) {
710 case POWER_SUPPLY_PROP_STATUS:
711 case POWER_SUPPLY_PROP_CAPACITY:
712 if (time_before(drvdata->battery_next_query, jiffies)) {
713 drvdata->battery_next_query =
714 jiffies + QUERY_MIN_INTERVAL;
715 ret = asus_battery_query(drvdata);
716 if (ret)
717 return ret;
718 }
719 if (psp == POWER_SUPPLY_PROP_STATUS)
720 val->intval = drvdata->battery_stat;
721 else
722 val->intval = drvdata->battery_capacity;
723 break;
724 case POWER_SUPPLY_PROP_PRESENT:
725 val->intval = 1;
726 break;
727 case POWER_SUPPLY_PROP_SCOPE:
728 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
729 break;
730 case POWER_SUPPLY_PROP_MODEL_NAME:
731 val->strval = drvdata->hdev->name;
732 break;
733 default:
734 ret = -EINVAL;
735 break;
736 }
737
738 return ret;
739}
740
741static int asus_battery_probe(struct hid_device *hdev)
742{
743 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
744 struct power_supply_config pscfg = { .drv_data = drvdata };
745 int ret = 0;
746
747 drvdata->battery_capacity = 0;
748 drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
749 drvdata->battery_in_query = false;
750
751 drvdata->battery_desc.properties = asus_battery_props;
752 drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
753 drvdata->battery_desc.get_property = asus_battery_get_property;
754 drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
755 drvdata->battery_desc.use_for_apm = 0;
756 drvdata->battery_desc.name = devm_kasprintf(dev: &hdev->dev, GFP_KERNEL,
757 fmt: "asus-keyboard-%s-battery",
758 strlen(hdev->uniq) ?
759 hdev->uniq : dev_name(dev: &hdev->dev));
760 if (!drvdata->battery_desc.name)
761 return -ENOMEM;
762
763 drvdata->battery_next_query = jiffies;
764
765 drvdata->battery = devm_power_supply_register(parent: &hdev->dev,
766 desc: &(drvdata->battery_desc), cfg: &pscfg);
767 if (IS_ERR(ptr: drvdata->battery)) {
768 ret = PTR_ERR(ptr: drvdata->battery);
769 drvdata->battery = NULL;
770 hid_err(hdev, "Unable to register battery device\n");
771 return ret;
772 }
773
774 power_supply_powers(psy: drvdata->battery, dev: &hdev->dev);
775
776 return ret;
777}
778
779static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
780{
781 struct input_dev *input = hi->input;
782 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
783
784 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
785 if (drvdata->quirks & QUIRK_T100CHI &&
786 hi->report->id != T100CHI_MOUSE_REPORT_ID)
787 return 0;
788
789 /* Handle MULTI_INPUT on E1239T mouse/touchpad USB interface */
790 if (drvdata->tp && (drvdata->quirks & QUIRK_MEDION_E1239T)) {
791 switch (hi->report->id) {
792 case E1239T_TP_TOGGLE_REPORT_ID:
793 input_set_capability(dev: input, EV_KEY, KEY_F21);
794 input->name = "Asus Touchpad Keys";
795 drvdata->tp_kbd_input = input;
796 return 0;
797 case INPUT_REPORT_ID:
798 break; /* Touchpad report, handled below */
799 default:
800 return 0; /* Ignore other reports */
801 }
802 }
803
804 if (drvdata->tp) {
805 int ret;
806
807 input_set_abs_params(dev: input, ABS_MT_POSITION_X, min: 0,
808 max: drvdata->tp->max_x, fuzz: 0, flat: 0);
809 input_set_abs_params(dev: input, ABS_MT_POSITION_Y, min: 0,
810 max: drvdata->tp->max_y, fuzz: 0, flat: 0);
811 input_abs_set_res(dev: input, ABS_MT_POSITION_X, val: drvdata->tp->res_x);
812 input_abs_set_res(dev: input, ABS_MT_POSITION_Y, val: drvdata->tp->res_y);
813
814 if (drvdata->tp->contact_size >= 5) {
815 input_set_abs_params(dev: input, ABS_TOOL_WIDTH, min: 0,
816 MAX_TOUCH_MAJOR, fuzz: 0, flat: 0);
817 input_set_abs_params(dev: input, ABS_MT_TOUCH_MAJOR, min: 0,
818 MAX_TOUCH_MAJOR, fuzz: 0, flat: 0);
819 input_set_abs_params(dev: input, ABS_MT_PRESSURE, min: 0,
820 MAX_PRESSURE, fuzz: 0, flat: 0);
821 }
822
823 __set_bit(BTN_LEFT, input->keybit);
824 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
825
826 ret = input_mt_init_slots(dev: input, num_slots: drvdata->tp->max_contacts,
827 INPUT_MT_POINTER);
828
829 if (ret) {
830 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
831 return ret;
832 }
833 }
834
835 drvdata->input = input;
836
837 if (drvdata->enable_backlight &&
838 !asus_kbd_wmi_led_control_present(hdev) &&
839 asus_kbd_register_leds(hdev))
840 hid_warn(hdev, "Failed to initialize backlight.\n");
841
842 return 0;
843}
844
845#define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
846 max, EV_KEY, (c))
847static int asus_input_mapping(struct hid_device *hdev,
848 struct hid_input *hi, struct hid_field *field,
849 struct hid_usage *usage, unsigned long **bit,
850 int *max)
851{
852 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
853
854 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
855 /* Don't map anything from the HID report.
856 * We do it all manually in asus_input_configured
857 */
858 return -1;
859 }
860
861 /*
862 * Ignore a bunch of bogus collections in the T100CHI descriptor.
863 * This avoids a bunch of non-functional hid_input devices getting
864 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
865 */
866 if ((drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) &&
867 (field->application == (HID_UP_GENDESK | 0x0080) ||
868 field->application == HID_GD_MOUSE ||
869 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
870 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
871 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)))
872 return -1;
873
874 /* ASUS-specific keyboard hotkeys and led backlight */
875 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_ASUSVENDOR) {
876 switch (usage->hid & HID_USAGE) {
877 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
878 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
879 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
880 case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
881 case 0x7c: asus_map_key_clear(KEY_MICMUTE); break;
882 case 0x82: asus_map_key_clear(KEY_CAMERA); break;
883 case 0x88: asus_map_key_clear(KEY_RFKILL); break;
884 case 0xb5: asus_map_key_clear(KEY_CALC); break;
885 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
886 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
887 case 0xc7: asus_map_key_clear(KEY_KBDILLUMTOGGLE); break;
888
889 case 0x6b: asus_map_key_clear(KEY_F21); break; /* ASUS touchpad toggle */
890 case 0x38: asus_map_key_clear(KEY_PROG1); break; /* ROG key */
891 case 0xba: asus_map_key_clear(KEY_PROG2); break; /* Fn+C ASUS Splendid */
892 case 0x5c: asus_map_key_clear(KEY_PROG3); break; /* Fn+Space Power4Gear */
893 case 0x99: asus_map_key_clear(KEY_PROG4); break; /* Fn+F5 "fan" symbol */
894 case 0xae: asus_map_key_clear(KEY_PROG4); break; /* Fn+F5 "fan" symbol */
895 case 0x92: asus_map_key_clear(KEY_CALC); break; /* Fn+Ret "Calc" symbol */
896 case 0xb2: asus_map_key_clear(KEY_PROG2); break; /* Fn+Left previous aura */
897 case 0xb3: asus_map_key_clear(KEY_PROG3); break; /* Fn+Left next aura */
898 case 0x6a: asus_map_key_clear(KEY_F13); break; /* Screenpad toggle */
899 case 0x4b: asus_map_key_clear(KEY_F14); break; /* Arrows/Pg-Up/Dn toggle */
900
901
902 default:
903 /* ASUS lazily declares 256 usages, ignore the rest,
904 * as some make the keyboard appear as a pointer device. */
905 return -1;
906 }
907
908 /*
909 * Check and enable backlight only on devices with UsagePage ==
910 * 0xff31 to avoid initializing the keyboard firmware multiple
911 * times on devices with multiple HID descriptors but same
912 * PID/VID.
913 */
914 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
915 drvdata->enable_backlight = true;
916
917 set_bit(EV_REP, addr: hi->input->evbit);
918 return 1;
919 }
920
921 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
922 switch (usage->hid & HID_USAGE) {
923 case 0xff01: asus_map_key_clear(BTN_1); break;
924 case 0xff02: asus_map_key_clear(BTN_2); break;
925 case 0xff03: asus_map_key_clear(BTN_3); break;
926 case 0xff04: asus_map_key_clear(BTN_4); break;
927 case 0xff05: asus_map_key_clear(BTN_5); break;
928 case 0xff06: asus_map_key_clear(BTN_6); break;
929 case 0xff07: asus_map_key_clear(BTN_7); break;
930 case 0xff08: asus_map_key_clear(BTN_8); break;
931 case 0xff09: asus_map_key_clear(BTN_9); break;
932 case 0xff0a: asus_map_key_clear(BTN_A); break;
933 case 0xff0b: asus_map_key_clear(BTN_B); break;
934 case 0x00f1: asus_map_key_clear(KEY_WLAN); break;
935 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
936 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
937 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break;
938 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break;
939 case 0x00f8: asus_map_key_clear(KEY_PROG1); break;
940 default:
941 return 0;
942 }
943
944 set_bit(EV_REP, addr: hi->input->evbit);
945 return 1;
946 }
947
948 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
949 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
950 switch (usage->hid & HID_USAGE) {
951 case 0xe2: /* Mute */
952 case 0xe9: /* Volume up */
953 case 0xea: /* Volume down */
954 return 0;
955 default:
956 /* Ignore dummy Consumer usages which make the
957 * keyboard incorrectly appear as a pointer device.
958 */
959 return -1;
960 }
961 }
962
963 /*
964 * The mute button is broken and only sends press events, we
965 * deal with this in our raw_event handler, so do not map it.
966 */
967 if ((drvdata->quirks & QUIRK_MEDION_E1239T) &&
968 usage->hid == (HID_UP_CONSUMER | 0xe2)) {
969 input_set_capability(dev: hi->input, EV_KEY, KEY_MUTE);
970 return -1;
971 }
972
973 return 0;
974}
975
976static int asus_start_multitouch(struct hid_device *hdev)
977{
978 int ret;
979 static const unsigned char buf[] = {
980 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00
981 };
982 unsigned char *dmabuf = kmemdup(p: buf, size: sizeof(buf), GFP_KERNEL);
983
984 if (!dmabuf) {
985 ret = -ENOMEM;
986 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
987 return ret;
988 }
989
990 ret = hid_hw_raw_request(hdev, reportnum: dmabuf[0], buf: dmabuf, len: sizeof(buf),
991 rtype: HID_FEATURE_REPORT, reqtype: HID_REQ_SET_REPORT);
992
993 kfree(objp: dmabuf);
994
995 if (ret != sizeof(buf)) {
996 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
997 return ret;
998 }
999
1000 return 0;
1001}
1002
1003static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
1004{
1005 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1006
1007 if (drvdata->tp)
1008 return asus_start_multitouch(hdev);
1009
1010 return 0;
1011}
1012
1013static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
1014{
1015 int ret;
1016 struct asus_drvdata *drvdata;
1017
1018 drvdata = devm_kzalloc(dev: &hdev->dev, size: sizeof(*drvdata), GFP_KERNEL);
1019 if (drvdata == NULL) {
1020 hid_err(hdev, "Can't alloc Asus descriptor\n");
1021 return -ENOMEM;
1022 }
1023
1024 hid_set_drvdata(hdev, data: drvdata);
1025
1026 drvdata->quirks = id->driver_data;
1027
1028 /*
1029 * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
1030 * Thus, identify T90CHI dock with product name string.
1031 */
1032 if (strstr(hdev->name, "T90CHI")) {
1033 drvdata->quirks &= ~QUIRK_T100CHI;
1034 drvdata->quirks |= QUIRK_T90CHI;
1035 }
1036
1037 if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
1038 drvdata->tp = &asus_i2c_tp;
1039
1040 if ((drvdata->quirks & QUIRK_T100_KEYBOARD) && hid_is_usb(hdev)) {
1041 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1042
1043 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
1044 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
1045 /*
1046 * The T100HA uses the same USB-ids as the T100TAF and
1047 * the T200TA uses the same USB-ids as the T100TA, while
1048 * both have different max x/y values as the T100TA[F].
1049 */
1050 if (dmi_match(f: DMI_PRODUCT_NAME, str: "T100HAN"))
1051 drvdata->tp = &asus_t100ha_tp;
1052 else if (dmi_match(f: DMI_PRODUCT_NAME, str: "T200TA"))
1053 drvdata->tp = &asus_t200ta_tp;
1054 else
1055 drvdata->tp = &asus_t100ta_tp;
1056 }
1057 }
1058
1059 if (drvdata->quirks & QUIRK_T100CHI) {
1060 /*
1061 * All functionality is on a single HID interface and for
1062 * userspace the touchpad must be a separate input_dev.
1063 */
1064 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1065 drvdata->tp = &asus_t100chi_tp;
1066 }
1067
1068 if ((drvdata->quirks & QUIRK_MEDION_E1239T) && hid_is_usb(hdev)) {
1069 struct usb_host_interface *alt =
1070 to_usb_interface(hdev->dev.parent)->altsetting;
1071
1072 if (alt->desc.bInterfaceNumber == MEDION_E1239T_TPAD_INTF) {
1073 /* For separate input-devs for tp and tp toggle key */
1074 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1075 drvdata->quirks |= QUIRK_SKIP_INPUT_MAPPING;
1076 drvdata->tp = &medion_e1239t_tp;
1077 }
1078 }
1079
1080 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
1081 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1082
1083 drvdata->hdev = hdev;
1084
1085 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1086 ret = asus_battery_probe(hdev);
1087 if (ret) {
1088 hid_err(hdev,
1089 "Asus hid battery_probe failed: %d\n", ret);
1090 return ret;
1091 }
1092 }
1093
1094 ret = hid_parse(hdev);
1095 if (ret) {
1096 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
1097 return ret;
1098 }
1099
1100 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1101 if (ret) {
1102 hid_err(hdev, "Asus hw start failed: %d\n", ret);
1103 return ret;
1104 }
1105
1106 if (!drvdata->input) {
1107 hid_err(hdev, "Asus input not registered\n");
1108 ret = -ENOMEM;
1109 goto err_stop_hw;
1110 }
1111
1112 if (drvdata->tp) {
1113 drvdata->input->name = "Asus TouchPad";
1114 } else {
1115 drvdata->input->name = "Asus Keyboard";
1116 }
1117
1118 if (drvdata->tp) {
1119 ret = asus_start_multitouch(hdev);
1120 if (ret)
1121 goto err_stop_hw;
1122 }
1123
1124 return 0;
1125err_stop_hw:
1126 hid_hw_stop(hdev);
1127 return ret;
1128}
1129
1130static void asus_remove(struct hid_device *hdev)
1131{
1132 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1133 unsigned long flags;
1134
1135 if (drvdata->kbd_backlight) {
1136 spin_lock_irqsave(&drvdata->kbd_backlight->lock, flags);
1137 drvdata->kbd_backlight->removed = true;
1138 spin_unlock_irqrestore(lock: &drvdata->kbd_backlight->lock, flags);
1139
1140 cancel_work_sync(work: &drvdata->kbd_backlight->work);
1141 }
1142
1143 hid_hw_stop(hdev);
1144}
1145
1146static const __u8 asus_g752_fixed_rdesc[] = {
1147 0x19, 0x00, /* Usage Minimum (0x00) */
1148 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */
1149};
1150
1151static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
1152 unsigned int *rsize)
1153{
1154 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1155
1156 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
1157 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
1158 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
1159 rdesc[55] = 0xdd;
1160 }
1161 /* For the T100TA/T200TA keyboard dock */
1162 if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
1163 (*rsize == 76 || *rsize == 101) &&
1164 rdesc[73] == 0x81 && rdesc[74] == 0x01) {
1165 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
1166 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
1167 }
1168 /* For the T100CHI/T90CHI keyboard dock */
1169 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1170 int rsize_orig;
1171 int offs;
1172
1173 if (drvdata->quirks & QUIRK_T100CHI) {
1174 rsize_orig = 403;
1175 offs = 388;
1176 } else {
1177 rsize_orig = 306;
1178 offs = 291;
1179 }
1180
1181 /*
1182 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
1183 * (FFh) and clear the flags in the Input() byte.
1184 * Note the descriptor has a bogus 0 byte at the end so we
1185 * only need 1 extra byte.
1186 */
1187 if (*rsize == rsize_orig &&
1188 rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
1189 *rsize = rsize_orig + 1;
1190 rdesc = kmemdup(p: rdesc, size: *rsize, GFP_KERNEL);
1191 if (!rdesc)
1192 return NULL;
1193
1194 hid_info(hdev, "Fixing up %s keyb report descriptor\n",
1195 drvdata->quirks & QUIRK_T100CHI ?
1196 "T100CHI" : "T90CHI");
1197 memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
1198 rdesc[offs] = 0x19;
1199 rdesc[offs + 1] = 0x00;
1200 rdesc[offs + 2] = 0x29;
1201 rdesc[offs + 3] = 0xff;
1202 rdesc[offs + 14] = 0x00;
1203 }
1204 }
1205
1206 if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
1207 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
1208 /* report is missing usage mninum and maximum */
1209 __u8 *new_rdesc;
1210 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
1211
1212 new_rdesc = devm_kzalloc(dev: &hdev->dev, size: new_size, GFP_KERNEL);
1213 if (new_rdesc == NULL)
1214 return rdesc;
1215
1216 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
1217 /* copy the valid part */
1218 memcpy(new_rdesc, rdesc, 61);
1219 /* insert missing part */
1220 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
1221 /* copy remaining data */
1222 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
1223
1224 *rsize = new_size;
1225 rdesc = new_rdesc;
1226 }
1227
1228 if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD &&
1229 *rsize == 331 && rdesc[190] == 0x85 && rdesc[191] == 0x5a &&
1230 rdesc[204] == 0x95 && rdesc[205] == 0x05) {
1231 hid_info(hdev, "Fixing up Asus N-KEY keyb report descriptor\n");
1232 rdesc[205] = 0x01;
1233 }
1234
1235 return rdesc;
1236}
1237
1238static const struct hid_device_id asus_devices[] = {
1239 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1240 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
1241 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1242 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1243 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1244 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
1245 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1246 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
1247 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1248 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
1249 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1250 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
1251 QUIRK_USE_KBD_BACKLIGHT },
1252 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1253 USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD),
1254 QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1255 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1256 USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD2),
1257 QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1258 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1259 USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD3),
1260 QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1261 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1262 USB_DEVICE_ID_ASUSTEK_ROG_CLAYMORE_II_KEYBOARD),
1263 QUIRK_ROG_CLAYMORE_II_KEYBOARD },
1264 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1265 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
1266 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1267 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1268 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
1269 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1270 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
1271 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
1272 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
1273 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
1274 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
1275 { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_MEDION_E1239T),
1276 QUIRK_MEDION_E1239T },
1277 /*
1278 * Note bind to the HID_GROUP_GENERIC group, so that we only bind to the keyboard
1279 * part, while letting hid-multitouch.c handle the touchpad.
1280 */
1281 { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1282 USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1283 { }
1284};
1285MODULE_DEVICE_TABLE(hid, asus_devices);
1286
1287static struct hid_driver asus_driver = {
1288 .name = "asus",
1289 .id_table = asus_devices,
1290 .report_fixup = asus_report_fixup,
1291 .probe = asus_probe,
1292 .remove = asus_remove,
1293 .input_mapping = asus_input_mapping,
1294 .input_configured = asus_input_configured,
1295#ifdef CONFIG_PM
1296 .reset_resume = asus_reset_resume,
1297#endif
1298 .event = asus_event,
1299 .raw_event = asus_raw_event
1300};
1301module_hid_driver(asus_driver);
1302
1303MODULE_LICENSE("GPL");

source code of linux/drivers/hid/hid-asus.c