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 && !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 } 271 272 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 } 285 286 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 } 302 303 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 } 315 316 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 } 347 348 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 } 359 360 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 } 367 368 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 */ 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 } 404 405 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 */ 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 } 485 486 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 } 495 496 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] */ 529 530 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 } 568 569 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 } 606 607 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)) 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 } 786 787 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 } 813 814 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 } 823 824 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 } 933 934 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 }; 950 951 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