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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[linux-block.git] / drivers / hid / hid-asus.c
CommitLineData
eeb01a57 1/*
b94f7d5d 2 * HID driver for Asus notebook built-in keyboard.
eeb01a57
YF		 3 * Fixes small logical maximum to match usage maximum.
4 *
b94f7d5d
YF		 5 * Currently supported devices are:
6 * EeeBook X205TA
7 * VivoBook E200HA
8 *
eeb01a57
YF		 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
9ce12d8b
BM		 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>
eeb01a57
YF		 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
eeb01a57
YF		 29#include <linux/hid.h>
30#include <linux/module.h>
9ce12d8b 31#include <linux/input/mt.h>
57573c54 32#include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
eeb01a57
YF		 33
34#include "hid-ids.h"
35
9ce12d8b
BM		 36MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
37MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
38MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
39MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
40MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
41
57573c54
HG		 42#define T100_TPAD_INTF 2
43
73c75d39 44#define T100CHI_MOUSE_REPORT_ID 0x06
9ce12d8b
BM		 45#define FEATURE_REPORT_ID 0x0d
46#define INPUT_REPORT_ID 0x5d
af22a610 47#define FEATURE_KBD_REPORT_ID 0x5a
af22a610
CC		 48#define FEATURE_KBD_REPORT_SIZE 16
49
50#define SUPPORT_KBD_BACKLIGHT BIT(0)
9ce12d8b 51
9ce12d8b
BM		 52#define MAX_TOUCH_MAJOR 8
53#define MAX_PRESSURE 128
54
9ce12d8b
BM		 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)
0485b1ec 66#define QUIRK_NO_CONSUMER_USAGES BIT(4)
af22a610 67#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
76dd1fbe 68#define QUIRK_T100_KEYBOARD BIT(6)
5703e52c 69#define QUIRK_T100CHI BIT(7)
9ce12d8b 70
a93913e1 71#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
0485b1ec
MH		 72 QUIRK_NO_INIT_REPORTS | \
73 QUIRK_NO_CONSUMER_USAGES)
c81760b9 74#define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
9ce12d8b
BM		 75 QUIRK_SKIP_INPUT_MAPPING | \
76 QUIRK_IS_MULTITOUCH)
77
78#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
79
af22a610
CC		 80struct asus_kbd_leds {
81 struct led_classdev cdev;
82 struct hid_device *hdev;
83 struct work_struct work;
84 unsigned int brightness;
85 bool removed;
86};
87
c81760b9
HG		 88struct asus_touchpad_info {
89 int max_x;
90 int max_y;
b61d43e6
HG		 91 int res_x;
92 int res_y;
c81760b9
HG		 93 int contact_size;
94 int max_contacts;
95};
96
9ce12d8b
BM		 97struct asus_drvdata {
98 unsigned long quirks;
99 struct input_dev *input;
af22a610 100 struct asus_kbd_leds *kbd_backlight;
c81760b9 101 const struct asus_touchpad_info *tp;
af22a610 102 bool enable_backlight;
9ce12d8b
BM		 103};
104
c81760b9
HG		 105static const struct asus_touchpad_info asus_i2c_tp = {
106 .max_x = 2794,
107 .max_y = 1758,
108 .contact_size = 5,
109 .max_contacts = 5,
110};
111
112static const struct asus_touchpad_info asus_t100ta_tp = {
113 .max_x = 2240,
25cc2611 114 .max_y = 1120,
b61d43e6
HG		 115 .res_x = 30, /* units/mm */
116 .res_y = 27, /* units/mm */
c81760b9
HG		 117 .contact_size = 5,
118 .max_contacts = 5,
119};
120
73c75d39
HG		 121static const struct asus_touchpad_info asus_t100chi_tp = {
122 .max_x = 2640,
123 .max_y = 1320,
124 .res_x = 31, /* units/mm */
125 .res_y = 29, /* units/mm */
126 .contact_size = 3,
127 .max_contacts = 4,
128};
129
c81760b9 130static void asus_report_contact_down(struct asus_drvdata *drvdat,
9ce12d8b
BM		 131 int toolType, u8 *data)
132{
c81760b9
HG		 133 struct input_dev *input = drvdat->input;
134 int touch_major, pressure, x, y;
135
136 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
137 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
9ce12d8b 138
73c75d39
HG		 139 input_report_abs(input, ABS_MT_POSITION_X, x);
140 input_report_abs(input, ABS_MT_POSITION_Y, y);
141
142 if (drvdat->tp->contact_size < 5)
143 return;
144
9ce12d8b
BM		 145 if (toolType == MT_TOOL_PALM) {
146 touch_major = MAX_TOUCH_MAJOR;
147 pressure = MAX_PRESSURE;
148 } else {
149 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
150 pressure = data[4] & CONTACT_PRESSURE_MASK;
151 }
152
9ce12d8b
BM		 153 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
154 input_report_abs(input, ABS_MT_PRESSURE, pressure);
155}
156
157/* Required for Synaptics Palm Detection */
c81760b9 158static void asus_report_tool_width(struct asus_drvdata *drvdat)
9ce12d8b 159{
c81760b9 160 struct input_mt *mt = drvdat->input->mt;
9ce12d8b
BM		 161 struct input_mt_slot *oldest;
162 int oldid, count, i;
163
73c75d39
HG		 164 if (drvdat->tp->contact_size < 5)
165 return;
166
9ce12d8b
BM		 167 oldest = NULL;
168 oldid = mt->trkid;
169 count = 0;
170
171 for (i = 0; i < mt->num_slots; ++i) {
172 struct input_mt_slot *ps = &mt->slots[i];
173 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
174
175 if (id < 0)
176 continue;
177 if ((id - oldid) & TRKID_SGN) {
178 oldest = ps;
179 oldid = id;
180 }
181 count++;
182 }
183
184 if (oldest) {
c81760b9 185 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
9ce12d8b
BM		 186 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
187 }
188}
189
c81760b9 190static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
9ce12d8b 191{
73c75d39 192 int i, toolType = MT_TOOL_FINGER;
9ce12d8b
BM		 193 u8 *contactData = data + 2;
194
c81760b9
HG		 195 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts)
196 return 0;
197
198 for (i = 0; i < drvdat->tp->max_contacts; i++) {
9ce12d8b 199 bool down = !!(data[1] & BIT(i+3));
73c75d39
HG		 200
201 if (drvdat->tp->contact_size >= 5)
202 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
9ce12d8b
BM		 203 MT_TOOL_PALM : MT_TOOL_FINGER;
204
c81760b9
HG		 205 input_mt_slot(drvdat->input, i);
206 input_mt_report_slot_state(drvdat->input, toolType, down);
9ce12d8b
BM		 207
208 if (down) {
c81760b9
HG		 209 asus_report_contact_down(drvdat, toolType, contactData);
210 contactData += drvdat->tp->contact_size;
9ce12d8b
BM		 211 }
212 }
213
c81760b9
HG		 214 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
215 asus_report_tool_width(drvdat);
216
217 input_mt_sync_frame(drvdat->input);
218 input_sync(drvdat->input);
9ce12d8b 219
c81760b9 220 return 1;
9ce12d8b
BM		 221}
222
223static int asus_raw_event(struct hid_device *hdev,
224 struct hid_report *report, u8 *data, int size)
225{
226 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
227
c81760b9
HG		 228 if (drvdata->tp && data[0] == INPUT_REPORT_ID)
229 return asus_report_input(drvdata, data, size);
9ce12d8b
BM		 230
231 return 0;
232}
233
af22a610
CC		 234static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
235{
236 unsigned char *dmabuf;
237 int ret;
238
239 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
240 if (!dmabuf)
241 return -ENOMEM;
242
243 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
244 buf_size, HID_FEATURE_REPORT,
245 HID_REQ_SET_REPORT);
246 kfree(dmabuf);
247
248 return ret;
249}
250
251static int asus_kbd_init(struct hid_device *hdev)
252{
253 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
254 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
255 int ret;
256
257 ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
258 if (ret < 0)
259 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
260
261 return ret;
262}
263
264static int asus_kbd_get_functions(struct hid_device *hdev,
265 unsigned char *kbd_func)
266{
267 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
268 u8 *readbuf;
269 int ret;
270
271 ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
272 if (ret < 0) {
273 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
274 return ret;
275 }
276
277 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
278 if (!readbuf)
279 return -ENOMEM;
280
281 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
282 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
283 HID_REQ_GET_REPORT);
284 if (ret < 0) {
285 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
286 kfree(readbuf);
287 return ret;
288 }
289
290 *kbd_func = readbuf[6];
291
292 kfree(readbuf);
293 return ret;
294}
295
296static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
297 enum led_brightness brightness)
298{
299 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
300 cdev);
301 if (led->brightness == brightness)
302 return;
303
304 led->brightness = brightness;
305 schedule_work(&led->work);
306}
307
308static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
309{
310 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
311 cdev);
312
313 return led->brightness;
314}
315
316static void asus_kbd_backlight_work(struct work_struct *work)
317{
318 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
319 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
320 int ret;
321
322 if (led->removed)
323 return;
324
325 buf[4] = led->brightness;
326
327 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
328 if (ret < 0)
329 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
330}
331
332static int asus_kbd_register_leds(struct hid_device *hdev)
333{
334 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
335 unsigned char kbd_func;
336 int ret;
337
338 /* Initialize keyboard */
339 ret = asus_kbd_init(hdev);
340 if (ret < 0)
341 return ret;
342
343 /* Get keyboard functions */
344 ret = asus_kbd_get_functions(hdev, &kbd_func);
345 if (ret < 0)
346 return ret;
347
348 /* Check for backlight support */
349 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
350 return -ENODEV;
351
352 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
353 sizeof(struct asus_kbd_leds),
354 GFP_KERNEL);
355 if (!drvdata->kbd_backlight)
356 return -ENOMEM;
357
358 drvdata->kbd_backlight->removed = false;
359 drvdata->kbd_backlight->brightness = 0;
360 drvdata->kbd_backlight->hdev = hdev;
361 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
362 drvdata->kbd_backlight->cdev.max_brightness = 3;
363 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
364 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
365 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
366
367 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
368 if (ret < 0) {
369 /* No need to have this still around */
370 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
371 }
372
373 return ret;
374}
375
9ce12d8b
BM		 376static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
377{
c8b1b3dd 378 struct input_dev *input = hi->input;
9ce12d8b
BM		 379 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
380
73c75d39
HG		 381 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
382 if (drvdata->quirks & QUIRK_T100CHI &&
383 hi->report->id != T100CHI_MOUSE_REPORT_ID)
384 return 0;
385
c81760b9 386 if (drvdata->tp) {
9ce12d8b 387 int ret;
9ce12d8b 388
c81760b9
HG		 389 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
390 drvdata->tp->max_x, 0, 0);
391 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
392 drvdata->tp->max_y, 0, 0);
b61d43e6
HG		 393 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
394 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
73c75d39
HG		 395
396 if (drvdata->tp->contact_size >= 5) {
397 input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
398 MAX_TOUCH_MAJOR, 0, 0);
399 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
400 MAX_TOUCH_MAJOR, 0, 0);
401 input_set_abs_params(input, ABS_MT_PRESSURE, 0,
402 MAX_PRESSURE, 0, 0);
403 }
9ce12d8b
BM		 404
405 __set_bit(BTN_LEFT, input->keybit);
406 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
407
c81760b9
HG		 408 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
409 INPUT_MT_POINTER);
9ce12d8b
BM		 410
411 if (ret) {
412 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
413 return ret;
414 }
9ce12d8b
BM		 415 }
416
c8b1b3dd
BM		 417 drvdata->input = input;
418
af22a610
CC		 419 if (drvdata->enable_backlight && asus_kbd_register_leds(hdev))
420 hid_warn(hdev, "Failed to initialize backlight.\n");
421
9ce12d8b
BM		 422 return 0;
423}
424
a93913e1 425#define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1caccc25 426 max, EV_KEY, (c))
9ce12d8b
BM		 427static int asus_input_mapping(struct hid_device *hdev,
428 struct hid_input *hi, struct hid_field *field,
429 struct hid_usage *usage, unsigned long **bit,
430 int *max)
431{
432 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
433
434 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
435 /* Don't map anything from the HID report.
436 * We do it all manually in asus_input_configured
437 */
438 return -1;
439 }
440
73c75d39
HG		 441 /*
442 * Ignore a bunch of bogus collections in the T100CHI descriptor.
443 * This avoids a bunch of non-functional hid_input devices getting
444 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
445 */
446 if (drvdata->quirks & QUIRK_T100CHI) {
447 if (field->application == (HID_UP_GENDESK | 0x0080) ||
448 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
449 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
450 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026))
451 return -1;
452 /*
453 * We use the hid_input for the mouse report for the touchpad,
454 * keep the left button, to avoid the core removing it.
455 */
456 if (field->application == HID_GD_MOUSE &&
457 usage->hid != (HID_UP_BUTTON | 1))
458 return -1;
459 }
460
a93913e1 461 /* ASUS-specific keyboard hotkeys */
1caccc25
CC		 462 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
463 set_bit(EV_REP, hi->input->evbit);
464 switch (usage->hid & HID_USAGE) {
a93913e1
MH		 465 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
466 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
467 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
468 case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
469 case 0x82: asus_map_key_clear(KEY_CAMERA); break;
802b24b4 470 case 0x88: asus_map_key_clear(KEY_RFKILL); break;
a93913e1
MH		 471 case 0xb5: asus_map_key_clear(KEY_CALC); break;
472 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
473 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
1caccc25
CC		 474
475 /* ASUS touchpad toggle */
a93913e1 476 case 0x6b: asus_map_key_clear(KEY_F21); break;
1caccc25
CC		 477
478 /* ROG key */
a93913e1 479 case 0x38: asus_map_key_clear(KEY_PROG1); break;
1caccc25
CC		 480
481 /* Fn+C ASUS Splendid */
a93913e1 482 case 0xba: asus_map_key_clear(KEY_PROG2); break;
1caccc25
CC		 483
484 /* Fn+Space Power4Gear Hybrid */
a93913e1 485 case 0x5c: asus_map_key_clear(KEY_PROG3); break;
1caccc25
CC		 486
487 default:
0485b1ec
MH		 488 /* ASUS lazily declares 256 usages, ignore the rest,
489 * as some make the keyboard appear as a pointer device. */
490 return -1;
1caccc25 491 }
af22a610
CC		 492
493 /*
494 * Check and enable backlight only on devices with UsagePage ==
495 * 0xff31 to avoid initializing the keyboard firmware multiple
496 * times on devices with multiple HID descriptors but same
497 * PID/VID.
498 */
499 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
500 drvdata->enable_backlight = true;
501
1caccc25
CC		 502 return 1;
503 }
504
5be91803
DD		 505 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
506 set_bit(EV_REP, hi->input->evbit);
507 switch (usage->hid & HID_USAGE) {
508 case 0xff01: asus_map_key_clear(BTN_1); break;
509 case 0xff02: asus_map_key_clear(BTN_2); break;
510 case 0xff03: asus_map_key_clear(BTN_3); break;
511 case 0xff04: asus_map_key_clear(BTN_4); break;
512 case 0xff05: asus_map_key_clear(BTN_5); break;
513 case 0xff06: asus_map_key_clear(BTN_6); break;
514 case 0xff07: asus_map_key_clear(BTN_7); break;
515 case 0xff08: asus_map_key_clear(BTN_8); break;
516 case 0xff09: asus_map_key_clear(BTN_9); break;
517 case 0xff0a: asus_map_key_clear(BTN_A); break;
518 case 0xff0b: asus_map_key_clear(BTN_B); break;
519 case 0x00f1: asus_map_key_clear(KEY_WLAN); break;
520 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
521 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
522 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break;
523 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break;
524 case 0x00f8: asus_map_key_clear(KEY_PROG1); break;
525 default:
526 return 0;
527 }
528
529 return 1;
530 }
531
0485b1ec
MH		 532 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
533 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
534 switch (usage->hid & HID_USAGE) {
535 case 0xe2: /* Mute */
536 case 0xe9: /* Volume up */
537 case 0xea: /* Volume down */
538 return 0;
539 default:
540 /* Ignore dummy Consumer usages which make the
541 * keyboard incorrectly appear as a pointer device.
542 */
543 return -1;
544 }
545 }
546
9ce12d8b
BM		 547 return 0;
548}
549
550static int asus_start_multitouch(struct hid_device *hdev)
551{
552 int ret;
553 const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
554 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
555
556 if (!dmabuf) {
557 ret = -ENOMEM;
558 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
559 return ret;
560 }
561
562 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
563 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
564
565 kfree(dmabuf);
566
567 if (ret != sizeof(buf)) {
568 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
569 return ret;
570 }
571
572 return 0;
573}
574
575static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
576{
577 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
578
c81760b9 579 if (drvdata->tp)
9ce12d8b
BM		 580 return asus_start_multitouch(hdev);
581
582 return 0;
583}
584
585static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
586{
587 int ret;
588 struct asus_drvdata *drvdata;
589
590 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
591 if (drvdata == NULL) {
592 hid_err(hdev, "Can't alloc Asus descriptor\n");
593 return -ENOMEM;
594 }
595
596 hid_set_drvdata(hdev, drvdata);
597
598 drvdata->quirks = id->driver_data;
599
c81760b9
HG		 600 if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
601 drvdata->tp = &asus_i2c_tp;
602
57573c54
HG		 603 if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
604 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
605
c81760b9
HG		 606 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
607 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
608 drvdata->tp = &asus_t100ta_tp;
609 }
57573c54
HG		 610 }
611
73c75d39
HG		 612 if (drvdata->quirks & QUIRK_T100CHI) {
613 /*
614 * All functionality is on a single HID interface and for
615 * userspace the touchpad must be a separate input_dev.
616 */
617 hdev->quirks |= HID_QUIRK_MULTI_INPUT |
618 HID_QUIRK_NO_EMPTY_INPUT;
619 drvdata->tp = &asus_t100chi_tp;
620 }
621
9ce12d8b
BM		 622 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
623 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
624
625 ret = hid_parse(hdev);
626 if (ret) {
627 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
628 return ret;
629 }
630
631 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
632 if (ret) {
633 hid_err(hdev, "Asus hw start failed: %d\n", ret);
634 return ret;
635 }
636
637 if (!drvdata->input) {
638 hid_err(hdev, "Asus input not registered\n");
639 ret = -ENOMEM;
640 goto err_stop_hw;
641 }
642
c81760b9 643 if (drvdata->tp) {
c8b1b3dd
BM		 644 drvdata->input->name = "Asus TouchPad";
645 } else {
646 drvdata->input->name = "Asus Keyboard";
647 }
9ce12d8b 648
c81760b9 649 if (drvdata->tp) {
9ce12d8b
BM		 650 ret = asus_start_multitouch(hdev);
651 if (ret)
652 goto err_stop_hw;
653 }
654
655 return 0;
656err_stop_hw:
657 hid_hw_stop(hdev);
658 return ret;
659}
660
af22a610
CC		 661static void asus_remove(struct hid_device *hdev)
662{
663 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
664
665 if (drvdata->kbd_backlight) {
666 drvdata->kbd_backlight->removed = true;
667 cancel_work_sync(&drvdata->kbd_backlight->work);
668 }
715e944f
CC		 669
670 hid_hw_stop(hdev);
af22a610
CC		 671}
672
eeb01a57
YF		 673static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
674 unsigned int *rsize)
675{
9ce12d8b
BM		 676 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
677
678 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
679 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
b94f7d5d 680 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
eeb01a57
YF		 681 rdesc[55] = 0xdd;
682 }
5703e52c 683 /* For the T100TA keyboard dock */
76dd1fbe
HG		 684 if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
685 *rsize == 76 && rdesc[73] == 0x81 && rdesc[74] == 0x01) {
686 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
687 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
688 }
5703e52c
HG		 689 /* For the T100CHI keyboard dock */
690 if (drvdata->quirks & QUIRK_T100CHI &&
691 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) {
692 /*
693 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
694 * (FFh) and clear the flags in the Input() byte.
695 * Note the descriptor has a bogus 0 byte at the end so we
696 * only need 1 extra byte.
697 */
698 *rsize = 404;
699 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
700 if (!rdesc)
701 return NULL;
702
703 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n");
704 memmove(rdesc + 392, rdesc + 390, 12);
705 rdesc[388] = 0x19;
706 rdesc[389] = 0x00;
707 rdesc[390] = 0x29;
708 rdesc[391] = 0xff;
709 rdesc[402] = 0x00;
710 }
76dd1fbe 711
eeb01a57
YF		 712 return rdesc;
713}
714
715static const struct hid_device_id asus_devices[] = {
9ce12d8b 716 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
a93913e1 717 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
9ce12d8b 718 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
c81760b9 719 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1caccc25
CC		 720 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
721 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
722 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
af22a610 723 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
76dd1fbe
HG		 724 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
725 USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD),
726 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
5be91803 727 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
38b2d78c 728 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
5be91803 729 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
5703e52c
HG		 730 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
731 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
732
eeb01a57
YF		 733 { }
734};
735MODULE_DEVICE_TABLE(hid, asus_devices);
736
737static struct hid_driver asus_driver = {
9ce12d8b
BM		 738 .name = "asus",
739 .id_table = asus_devices,
740 .report_fixup = asus_report_fixup,
741 .probe = asus_probe,
af22a610 742 .remove = asus_remove,
9ce12d8b
BM		 743 .input_mapping = asus_input_mapping,
744 .input_configured = asus_input_configured,
745#ifdef CONFIG_PM
746 .reset_resume = asus_reset_resume,
747#endif
748 .raw_event = asus_raw_event
eeb01a57
YF		 749};
750module_hid_driver(asus_driver);
751
752MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)