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