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"); 1081