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net: DCB: Validate DCB_ATTR_DCB_BUFFER argument
[linux/fpc-iii.git] / drivers / hid / hid-asus.c
blobe6e4c841fb06f4c0dd1c73bf086b466c609fd23f
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
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 BATTERY_REPORT_ID (0x03)
63 #define BATTERY_REPORT_SIZE (1 + 8)
64 #define BATTERY_LEVEL_MAX ((u8)255)
65 #define BATTERY_STAT_DISCONNECT (0)
66 #define BATTERY_STAT_CHARGING (1)
67 #define BATTERY_STAT_FULL (2)
68
69 #define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
70 #define QUIRK_NO_INIT_REPORTS BIT(1)
71 #define QUIRK_SKIP_INPUT_MAPPING BIT(2)
72 #define QUIRK_IS_MULTITOUCH BIT(3)
73 #define QUIRK_NO_CONSUMER_USAGES BIT(4)
74 #define QUIRK_USE_KBD_BACKLIGHT BIT(5)
75 #define QUIRK_T100_KEYBOARD BIT(6)
76 #define QUIRK_T100CHI BIT(7)
77 #define QUIRK_G752_KEYBOARD BIT(8)
78 #define QUIRK_T101HA_DOCK BIT(9)
79 #define QUIRK_T90CHI BIT(10)
80
81 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
82 QUIRK_NO_INIT_REPORTS | \
83 QUIRK_NO_CONSUMER_USAGES)
84 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
85 QUIRK_SKIP_INPUT_MAPPING | \
86 QUIRK_IS_MULTITOUCH)
87
88 #define TRKID_SGN ((TRKID_MAX + 1) >> 1)
89
90 struct asus_kbd_leds {
91 struct led_classdev cdev;
92 struct hid_device *hdev;
93 struct work_struct work;
94 unsigned int brightness;
95 bool removed;
96 };
97
98 struct asus_touchpad_info {
99 int max_x;
100 int max_y;
101 int res_x;
102 int res_y;
103 int contact_size;
104 int max_contacts;
105 };
106
107 struct asus_drvdata {
108 unsigned long quirks;
109 struct hid_device *hdev;
110 struct input_dev *input;
111 struct asus_kbd_leds *kbd_backlight;
112 const struct asus_touchpad_info *tp;
113 bool enable_backlight;
114 struct power_supply *battery;
115 struct power_supply_desc battery_desc;
116 int battery_capacity;
117 int battery_stat;
118 bool battery_in_query;
119 unsigned long battery_next_query;
120 };
121
122 static int asus_report_battery(struct asus_drvdata *, u8 *, int);
123
124 static const struct asus_touchpad_info asus_i2c_tp = {
125 .max_x = 2794,
126 .max_y = 1758,
127 .contact_size = 5,
128 .max_contacts = 5,
129 };
130
131 static const struct asus_touchpad_info asus_t100ta_tp = {
132 .max_x = 2240,
133 .max_y = 1120,
134 .res_x = 30, /* units/mm */
135 .res_y = 27, /* units/mm */
136 .contact_size = 5,
137 .max_contacts = 5,
138 };
139
140 static const struct asus_touchpad_info asus_t100ha_tp = {
141 .max_x = 2640,
142 .max_y = 1320,
143 .res_x = 30, /* units/mm */
144 .res_y = 29, /* units/mm */
145 .contact_size = 5,
146 .max_contacts = 5,
147 };
148
149 static const struct asus_touchpad_info asus_t200ta_tp = {
150 .max_x = 3120,
151 .max_y = 1716,
152 .res_x = 30, /* units/mm */
153 .res_y = 28, /* units/mm */
154 .contact_size = 5,
155 .max_contacts = 5,
156 };
157
158 static const struct asus_touchpad_info asus_t100chi_tp = {
159 .max_x = 2640,
160 .max_y = 1320,
161 .res_x = 31, /* units/mm */
162 .res_y = 29, /* units/mm */
163 .contact_size = 3,
164 .max_contacts = 4,
165 };
166
167 static void asus_report_contact_down(struct asus_drvdata *drvdat,
168 int toolType, u8 *data)
169 {
170 struct input_dev *input = drvdat->input;
171 int touch_major, pressure, x, y;
172
173 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
174 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
175
176 input_report_abs(input, ABS_MT_POSITION_X, x);
177 input_report_abs(input, ABS_MT_POSITION_Y, y);
178
179 if (drvdat->tp->contact_size < 5)
180 return;
181
182 if (toolType == MT_TOOL_PALM) {
183 touch_major = MAX_TOUCH_MAJOR;
184 pressure = MAX_PRESSURE;
185 } else {
186 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
187 pressure = data[4] & CONTACT_PRESSURE_MASK;
188 }
189
190 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
191 input_report_abs(input, ABS_MT_PRESSURE, pressure);
192 }
193
194 /* Required for Synaptics Palm Detection */
195 static void asus_report_tool_width(struct asus_drvdata *drvdat)
196 {
197 struct input_mt *mt = drvdat->input->mt;
198 struct input_mt_slot *oldest;
199 int oldid, count, i;
200
201 if (drvdat->tp->contact_size < 5)
202 return;
203
204 oldest = NULL;
205 oldid = mt->trkid;
206 count = 0;
207
208 for (i = 0; i < mt->num_slots; ++i) {
209 struct input_mt_slot *ps = &mt->slots[i];
210 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
211
212 if (id < 0)
213 continue;
214 if ((id - oldid) & TRKID_SGN) {
215 oldest = ps;
216 oldid = id;
217 }
218 count++;
219 }
220
221 if (oldest) {
222 input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
223 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
224 }
225 }
226
227 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
228 {
229 int i, toolType = MT_TOOL_FINGER;
230 u8 *contactData = data + 2;
231
232 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts)
233 return 0;
234
235 for (i = 0; i < drvdat->tp->max_contacts; i++) {
236 bool down = !!(data[1] & BIT(i+3));
237
238 if (drvdat->tp->contact_size >= 5)
239 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
240 MT_TOOL_PALM : MT_TOOL_FINGER;
241
242 input_mt_slot(drvdat->input, i);
243 input_mt_report_slot_state(drvdat->input, toolType, down);
244
245 if (down) {
246 asus_report_contact_down(drvdat, toolType, contactData);
247 contactData += drvdat->tp->contact_size;
248 }
249 }
250
251 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
252 asus_report_tool_width(drvdat);
253
254 input_mt_sync_frame(drvdat->input);
255 input_sync(drvdat->input);
256
257 return 1;
258 }
259
260 static int asus_event(struct hid_device *hdev, struct hid_field *field,
261 struct hid_usage *usage, __s32 value)
262 {
263 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
264 (usage->hid & HID_USAGE) != 0x00 &&
265 (usage->hid & HID_USAGE) != 0xff && !usage->type) {
266 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
267 usage->hid & HID_USAGE);
268 }
269
270 return 0;
271 }
272
273 static int asus_raw_event(struct hid_device *hdev,
274 struct hid_report *report, u8 *data, int size)
275 {
276 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
277
278 if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
279 return asus_report_battery(drvdata, data, size);
280
281 if (drvdata->tp && data[0] == INPUT_REPORT_ID)
282 return asus_report_input(drvdata, data, size);
283
284 return 0;
285 }
286
287 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
288 {
289 unsigned char *dmabuf;
290 int ret;
291
292 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
293 if (!dmabuf)
294 return -ENOMEM;
295
296 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
297 buf_size, HID_FEATURE_REPORT,
298 HID_REQ_SET_REPORT);
299 kfree(dmabuf);
300
301 return ret;
302 }
303
304 static int asus_kbd_init(struct hid_device *hdev)
305 {
306 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
307 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
308 int ret;
309
310 ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
311 if (ret < 0)
312 hid_err(hdev, "Asus failed to send init command: %d\n", ret);
313
314 return ret;
315 }
316
317 static int asus_kbd_get_functions(struct hid_device *hdev,
318 unsigned char *kbd_func)
319 {
320 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
321 u8 *readbuf;
322 int ret;
323
324 ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
325 if (ret < 0) {
326 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
327 return ret;
328 }
329
330 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
331 if (!readbuf)
332 return -ENOMEM;
333
334 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
335 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
336 HID_REQ_GET_REPORT);
337 if (ret < 0) {
338 hid_err(hdev, "Asus failed to request functions: %d\n", ret);
339 kfree(readbuf);
340 return ret;
341 }
342
343 *kbd_func = readbuf[6];
344
345 kfree(readbuf);
346 return ret;
347 }
348
349 static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
350 enum led_brightness brightness)
351 {
352 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
353 cdev);
354 if (led->brightness == brightness)
355 return;
356
357 led->brightness = brightness;
358 schedule_work(&led->work);
359 }
360
361 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
362 {
363 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
364 cdev);
365
366 return led->brightness;
367 }
368
369 static void asus_kbd_backlight_work(struct work_struct *work)
370 {
371 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
372 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
373 int ret;
374
375 if (led->removed)
376 return;
377
378 buf[4] = led->brightness;
379
380 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
381 if (ret < 0)
382 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
383 }
384
385 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes
386 * precedence. We only activate HID-based backlight control when the
387 * WMI control is not available.
388 */
389 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev)
390 {
391 u32 value;
392 int ret;
393
394 if (!IS_ENABLED(CONFIG_ASUS_WMI))
395 return false;
396
397 ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS,
398 ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value);
399 hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value);
400 if (ret)
401 return false;
402
403 return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT);
404 }
405
406 static int asus_kbd_register_leds(struct hid_device *hdev)
407 {
408 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
409 unsigned char kbd_func;
410 int ret;
411
412 /* Initialize keyboard */
413 ret = asus_kbd_init(hdev);
414 if (ret < 0)
415 return ret;
416
417 /* Get keyboard functions */
418 ret = asus_kbd_get_functions(hdev, &kbd_func);
419 if (ret < 0)
420 return ret;
421
422 /* Check for backlight support */
423 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
424 return -ENODEV;
425
426 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
427 sizeof(struct asus_kbd_leds),
428 GFP_KERNEL);
429 if (!drvdata->kbd_backlight)
430 return -ENOMEM;
431
432 drvdata->kbd_backlight->removed = false;
433 drvdata->kbd_backlight->brightness = 0;
434 drvdata->kbd_backlight->hdev = hdev;
435 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
436 drvdata->kbd_backlight->cdev.max_brightness = 3;
437 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
438 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
439 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
440
441 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
442 if (ret < 0) {
443 /* No need to have this still around */
444 devm_kfree(&hdev->dev, drvdata->kbd_backlight);
445 }
446
447 return ret;
448 }
449
450 /*
451 * [0] REPORT_ID (same value defined in report descriptor)
452 * [1] rest battery level. range [0..255]
453 * [2]..[7] Bluetooth hardware address (MAC address)
454 * [8] charging status
455 * = 0 : AC offline / discharging
456 * = 1 : AC online / charging
457 * = 2 : AC online / fully charged
458 */
459 static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
460 {
461 u8 sts;
462 u8 lvl;
463 int val;
464
465 lvl = data[1];
466 sts = data[8];
467
468 drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
469
470 switch (sts) {
471 case BATTERY_STAT_CHARGING:
472 val = POWER_SUPPLY_STATUS_CHARGING;
473 break;
474 case BATTERY_STAT_FULL:
475 val = POWER_SUPPLY_STATUS_FULL;
476 break;
477 case BATTERY_STAT_DISCONNECT:
478 default:
479 val = POWER_SUPPLY_STATUS_DISCHARGING;
480 break;
481 }
482 drvdata->battery_stat = val;
483
484 return 0;
485 }
486
487 static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
488 {
489 /* notify only the autonomous event by device */
490 if ((drvdata->battery_in_query == false) &&
491 (size == BATTERY_REPORT_SIZE))
492 power_supply_changed(drvdata->battery);
493
494 return 0;
495 }
496
497 static int asus_battery_query(struct asus_drvdata *drvdata)
498 {
499 u8 *buf;
500 int ret = 0;
501
502 buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
503 if (!buf)
504 return -ENOMEM;
505
506 drvdata->battery_in_query = true;
507 ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID,
508 buf, BATTERY_REPORT_SIZE,
509 HID_INPUT_REPORT, HID_REQ_GET_REPORT);
510 drvdata->battery_in_query = false;
511 if (ret == BATTERY_REPORT_SIZE)
512 ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE);
513 else
514 ret = -ENODATA;
515
516 kfree(buf);
517
518 return ret;
519 }
520
521 static enum power_supply_property asus_battery_props[] = {
522 POWER_SUPPLY_PROP_STATUS,
523 POWER_SUPPLY_PROP_PRESENT,
524 POWER_SUPPLY_PROP_CAPACITY,
525 POWER_SUPPLY_PROP_SCOPE,
526 POWER_SUPPLY_PROP_MODEL_NAME,
527 };
528
529 #define QUERY_MIN_INTERVAL (60 * HZ) /* 60[sec] */
530
531 static int asus_battery_get_property(struct power_supply *psy,
532 enum power_supply_property psp,
533 union power_supply_propval *val)
534 {
535 struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
536 int ret = 0;
537
538 switch (psp) {
539 case POWER_SUPPLY_PROP_STATUS:
540 case POWER_SUPPLY_PROP_CAPACITY:
541 if (time_before(drvdata->battery_next_query, jiffies)) {
542 drvdata->battery_next_query =
543 jiffies + QUERY_MIN_INTERVAL;
544 ret = asus_battery_query(drvdata);
545 if (ret)
546 return ret;
547 }
548 if (psp == POWER_SUPPLY_PROP_STATUS)
549 val->intval = drvdata->battery_stat;
550 else
551 val->intval = drvdata->battery_capacity;
552 break;
553 case POWER_SUPPLY_PROP_PRESENT:
554 val->intval = 1;
555 break;
556 case POWER_SUPPLY_PROP_SCOPE:
557 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
558 break;
559 case POWER_SUPPLY_PROP_MODEL_NAME:
560 val->strval = drvdata->hdev->name;
561 break;
562 default:
563 ret = -EINVAL;
564 break;
565 }
566
567 return ret;
568 }
569
570 static int asus_battery_probe(struct hid_device *hdev)
571 {
572 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
573 struct power_supply_config pscfg = { .drv_data = drvdata };
574 int ret = 0;
575
576 drvdata->battery_capacity = 0;
577 drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
578 drvdata->battery_in_query = false;
579
580 drvdata->battery_desc.properties = asus_battery_props;
581 drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
582 drvdata->battery_desc.get_property = asus_battery_get_property;
583 drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
584 drvdata->battery_desc.use_for_apm = 0;
585 drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
586 "asus-keyboard-%s-battery",
587 strlen(hdev->uniq) ?
588 hdev->uniq : dev_name(&hdev->dev));
589 if (!drvdata->battery_desc.name)
590 return -ENOMEM;
591
592 drvdata->battery_next_query = jiffies;
593
594 drvdata->battery = devm_power_supply_register(&hdev->dev,
595 &(drvdata->battery_desc), &pscfg);
596 if (IS_ERR(drvdata->battery)) {
597 ret = PTR_ERR(drvdata->battery);
598 drvdata->battery = NULL;
599 hid_err(hdev, "Unable to register battery device\n");
600 return ret;
601 }
602
603 power_supply_powers(drvdata->battery, &hdev->dev);
604
605 return ret;
606 }
607
608 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
609 {
610 struct input_dev *input = hi->input;
611 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
612
613 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
614 if (drvdata->quirks & QUIRK_T100CHI &&
615 hi->report->id != T100CHI_MOUSE_REPORT_ID)
616 return 0;
617
618 if (drvdata->tp) {
619 int ret;
620
621 input_set_abs_params(input, ABS_MT_POSITION_X, 0,
622 drvdata->tp->max_x, 0, 0);
623 input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
624 drvdata->tp->max_y, 0, 0);
625 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
626 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
627
628 if (drvdata->tp->contact_size >= 5) {
629 input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
630 MAX_TOUCH_MAJOR, 0, 0);
631 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
632 MAX_TOUCH_MAJOR, 0, 0);
633 input_set_abs_params(input, ABS_MT_PRESSURE, 0,
634 MAX_PRESSURE, 0, 0);
635 }
636
637 __set_bit(BTN_LEFT, input->keybit);
638 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
639
640 ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
641 INPUT_MT_POINTER);
642
643 if (ret) {
644 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
645 return ret;
646 }
647 }
648
649 drvdata->input = input;
650
651 if (drvdata->enable_backlight &&
652 !asus_kbd_wmi_led_control_present(hdev) &&
653 asus_kbd_register_leds(hdev))
654 hid_warn(hdev, "Failed to initialize backlight.\n");
655
656 return 0;
657 }
658
659 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
660 max, EV_KEY, (c))
661 static int asus_input_mapping(struct hid_device *hdev,
662 struct hid_input *hi, struct hid_field *field,
663 struct hid_usage *usage, unsigned long **bit,
664 int *max)
665 {
666 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
667
668 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
669 /* Don't map anything from the HID report.
670 * We do it all manually in asus_input_configured
671 */
672 return -1;
673 }
674
675 /*
676 * Ignore a bunch of bogus collections in the T100CHI descriptor.
677 * This avoids a bunch of non-functional hid_input devices getting
678 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
679 */
680 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
681 if (field->application == (HID_UP_GENDESK | 0x0080) ||
682 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
683 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
684 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026))
685 return -1;
686 /*
687 * We use the hid_input for the mouse report for the touchpad,
688 * keep the left button, to avoid the core removing it.
689 */
690 if (field->application == HID_GD_MOUSE &&
691 usage->hid != (HID_UP_BUTTON | 1))
692 return -1;
693 }
694
695 /* ASUS-specific keyboard hotkeys */
696 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
697 set_bit(EV_REP, hi->input->evbit);
698 switch (usage->hid & HID_USAGE) {
699 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
700 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
701 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
702 case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
703 case 0x7c: asus_map_key_clear(KEY_MICMUTE); break;
704 case 0x82: asus_map_key_clear(KEY_CAMERA); break;
705 case 0x88: asus_map_key_clear(KEY_RFKILL); break;
706 case 0xb5: asus_map_key_clear(KEY_CALC); break;
707 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
708 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
709
710 /* ASUS touchpad toggle */
711 case 0x6b: asus_map_key_clear(KEY_F21); break;
712
713 /* ROG key */
714 case 0x38: asus_map_key_clear(KEY_PROG1); break;
715
716 /* Fn+C ASUS Splendid */
717 case 0xba: asus_map_key_clear(KEY_PROG2); break;
718
719 /* Fn+Space Power4Gear Hybrid */
720 case 0x5c: asus_map_key_clear(KEY_PROG3); break;
721
722 /* Fn+F5 "fan" symbol on FX503VD */
723 case 0x99: asus_map_key_clear(KEY_PROG4); break;
724
725 default:
726 /* ASUS lazily declares 256 usages, ignore the rest,
727 * as some make the keyboard appear as a pointer device. */
728 return -1;
729 }
730
731 /*
732 * Check and enable backlight only on devices with UsagePage ==
733 * 0xff31 to avoid initializing the keyboard firmware multiple
734 * times on devices with multiple HID descriptors but same
735 * PID/VID.
736 */
737 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
738 drvdata->enable_backlight = true;
739
740 return 1;
741 }
742
743 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
744 set_bit(EV_REP, hi->input->evbit);
745 switch (usage->hid & HID_USAGE) {
746 case 0xff01: asus_map_key_clear(BTN_1); break;
747 case 0xff02: asus_map_key_clear(BTN_2); break;
748 case 0xff03: asus_map_key_clear(BTN_3); break;
749 case 0xff04: asus_map_key_clear(BTN_4); break;
750 case 0xff05: asus_map_key_clear(BTN_5); break;
751 case 0xff06: asus_map_key_clear(BTN_6); break;
752 case 0xff07: asus_map_key_clear(BTN_7); break;
753 case 0xff08: asus_map_key_clear(BTN_8); break;
754 case 0xff09: asus_map_key_clear(BTN_9); break;
755 case 0xff0a: asus_map_key_clear(BTN_A); break;
756 case 0xff0b: asus_map_key_clear(BTN_B); break;
757 case 0x00f1: asus_map_key_clear(KEY_WLAN); break;
758 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
759 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
760 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break;
761 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break;
762 case 0x00f8: asus_map_key_clear(KEY_PROG1); break;
763 default:
764 return 0;
765 }
766
767 return 1;
768 }
769
770 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
771 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
772 switch (usage->hid & HID_USAGE) {
773 case 0xe2: /* Mute */
774 case 0xe9: /* Volume up */
775 case 0xea: /* Volume down */
776 return 0;
777 default:
778 /* Ignore dummy Consumer usages which make the
779 * keyboard incorrectly appear as a pointer device.
780 */
781 return -1;
782 }
783 }
784
785 return 0;
786 }
787
788 static int asus_start_multitouch(struct hid_device *hdev)
789 {
790 int ret;
791 static const unsigned char buf[] = {
792 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00
793 };
794 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
795
796 if (!dmabuf) {
797 ret = -ENOMEM;
798 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
799 return ret;
800 }
801
802 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
803 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
804
805 kfree(dmabuf);
806
807 if (ret != sizeof(buf)) {
808 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
809 return ret;
810 }
811
812 return 0;
813 }
814
815 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
816 {
817 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
818
819 if (drvdata->tp)
820 return asus_start_multitouch(hdev);
821
822 return 0;
823 }
824
825 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
826 {
827 int ret;
828 struct asus_drvdata *drvdata;
829
830 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
831 if (drvdata == NULL) {
832 hid_err(hdev, "Can't alloc Asus descriptor\n");
833 return -ENOMEM;
834 }
835
836 hid_set_drvdata(hdev, drvdata);
837
838 drvdata->quirks = id->driver_data;
839
840 /*
841 * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
842 * Thus, identify T90CHI dock with product name string.
843 */
844 if (strstr(hdev->name, "T90CHI")) {
845 drvdata->quirks &= ~QUIRK_T100CHI;
846 drvdata->quirks |= QUIRK_T90CHI;
847 }
848
849 if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
850 drvdata->tp = &asus_i2c_tp;
851
852 if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
853 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
854
855 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
856 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
857 /*
858 * The T100HA uses the same USB-ids as the T100TAF and
859 * the T200TA uses the same USB-ids as the T100TA, while
860 * both have different max x/y values as the T100TA[F].
861 */
862 if (dmi_match(DMI_PRODUCT_NAME, "T100HAN"))
863 drvdata->tp = &asus_t100ha_tp;
864 else if (dmi_match(DMI_PRODUCT_NAME, "T200TA"))
865 drvdata->tp = &asus_t200ta_tp;
866 else
867 drvdata->tp = &asus_t100ta_tp;
868 }
869 }
870
871 if (drvdata->quirks & QUIRK_T100CHI) {
872 /*
873 * All functionality is on a single HID interface and for
874 * userspace the touchpad must be a separate input_dev.
875 */
876 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
877 drvdata->tp = &asus_t100chi_tp;
878 }
879
880 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
881 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
882
883 drvdata->hdev = hdev;
884
885 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
886 ret = asus_battery_probe(hdev);
887 if (ret) {
888 hid_err(hdev,
889 "Asus hid battery_probe failed: %d\n", ret);
890 return ret;
891 }
892 }
893
894 ret = hid_parse(hdev);
895 if (ret) {
896 hid_err(hdev, "Asus hid parse failed: %d\n", ret);
897 return ret;
898 }
899
900 /* use hid-multitouch for T101HA touchpad */
901 if (id->driver_data & QUIRK_T101HA_DOCK &&
902 hdev->collection->usage == HID_GD_MOUSE)
903 return -ENODEV;
904
905 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
906 if (ret) {
907 hid_err(hdev, "Asus hw start failed: %d\n", ret);
908 return ret;
909 }
910
911 if (!drvdata->input) {
912 hid_err(hdev, "Asus input not registered\n");
913 ret = -ENOMEM;
914 goto err_stop_hw;
915 }
916
917 if (drvdata->tp) {
918 drvdata->input->name = "Asus TouchPad";
919 } else {
920 drvdata->input->name = "Asus Keyboard";
921 }
922
923 if (drvdata->tp) {
924 ret = asus_start_multitouch(hdev);
925 if (ret)
926 goto err_stop_hw;
927 }
928
929 return 0;
930 err_stop_hw:
931 hid_hw_stop(hdev);
932 return ret;
933 }
934
935 static void asus_remove(struct hid_device *hdev)
936 {
937 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
938
939 if (drvdata->kbd_backlight) {
940 drvdata->kbd_backlight->removed = true;
941 cancel_work_sync(&drvdata->kbd_backlight->work);
942 }
943
944 hid_hw_stop(hdev);
945 }
946
947 static const __u8 asus_g752_fixed_rdesc[] = {
948 0x19, 0x00, /* Usage Minimum (0x00) */
949 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */
950 };
951
952 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
953 unsigned int *rsize)
954 {
955 struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
956
957 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
958 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
959 hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
960 rdesc[55] = 0xdd;
961 }
962 /* For the T100TA/T200TA keyboard dock */
963 if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
964 (*rsize == 76 || *rsize == 101) &&
965 rdesc[73] == 0x81 && rdesc[74] == 0x01) {
966 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
967 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
968 }
969 /* For the T100CHI/T90CHI keyboard dock */
970 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
971 int rsize_orig;
972 int offs;
973
974 if (drvdata->quirks & QUIRK_T100CHI) {
975 rsize_orig = 403;
976 offs = 388;
977 } else {
978 rsize_orig = 306;
979 offs = 291;
980 }
981
982 /*
983 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
984 * (FFh) and clear the flags in the Input() byte.
985 * Note the descriptor has a bogus 0 byte at the end so we
986 * only need 1 extra byte.
987 */
988 if (*rsize == rsize_orig &&
989 rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
990 *rsize = rsize_orig + 1;
991 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
992 if (!rdesc)
993 return NULL;
994
995 hid_info(hdev, "Fixing up %s keyb report descriptor\n",
996 drvdata->quirks & QUIRK_T100CHI ?
997 "T100CHI" : "T90CHI");
998 memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
999 rdesc[offs] = 0x19;
1000 rdesc[offs + 1] = 0x00;
1001 rdesc[offs + 2] = 0x29;
1002 rdesc[offs + 3] = 0xff;
1003 rdesc[offs + 14] = 0x00;
1004 }
1005 }
1006
1007 if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
1008 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
1009 /* report is missing usage mninum and maximum */
1010 __u8 *new_rdesc;
1011 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
1012
1013 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
1014 if (new_rdesc == NULL)
1015 return rdesc;
1016
1017 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
1018 /* copy the valid part */
1019 memcpy(new_rdesc, rdesc, 61);
1020 /* insert missing part */
1021 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
1022 /* copy remaining data */
1023 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
1024
1025 *rsize = new_size;
1026 rdesc = new_rdesc;
1027 }
1028
1029 return rdesc;
1030 }
1031
1032 static const struct hid_device_id asus_devices[] = {
1033 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1034 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
1035 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1036 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1037 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1038 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
1039 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1040 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
1041 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1042 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
1043 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1044 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
1045 QUIRK_USE_KBD_BACKLIGHT },
1046 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1047 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
1048 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1049 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1050 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
1051 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1052 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1053 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD), QUIRK_T101HA_DOCK },
1054 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
1055 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
1056 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
1057 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
1058 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
1059
1060 { }
1061 };
1062 MODULE_DEVICE_TABLE(hid, asus_devices);
1063
1064 static struct hid_driver asus_driver = {
1065 .name = "asus",
1066 .id_table = asus_devices,
1067 .report_fixup = asus_report_fixup,
1068 .probe = asus_probe,
1069 .remove = asus_remove,
1070 .input_mapping = asus_input_mapping,
1071 .input_configured = asus_input_configured,
1072 #ifdef CONFIG_PM
1073 .reset_resume = asus_reset_resume,
1074 #endif
1075 .event = asus_event,
1076 .raw_event = asus_raw_event
1077 };
1078 module_hid_driver(asus_driver);
1079
1080 MODULE_LICENSE("GPL");
Linux with added FPC-III support