1 /* 2 * HID driver for Asus notebook built-in keyboard. 3 * Fixes small logical maximum to match usage maximum. 4 * 5 * Currently supported devices are: 6 * EeeBook X205TA 7 * VivoBook E200HA 8 * 9 * Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com> 10 * 11 * This module based on hid-ortek by 12 * Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com> 13 * Copyright (c) 2011 Jiri Kosina 14 * 15 * This module has been updated to add support for Asus i2c touchpad. 16 * 17 * Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org> 18 * Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com> 19 * Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com> 20 */ 21 22 /* 23 * This program is free software; you can redistribute it and/or modify it 24 * under the terms of the GNU General Public License as published by the Free 25 * Software Foundation; either version 2 of the License, or (at your option) 26 * any later version. 27 */ 28 29 #include <linux/dmi.h> 30 #include <linux/hid.h> 31 #include <linux/module.h> 32 #include <linux/platform_data/x86/asus-wmi.h> 33 #include <linux/input/mt.h> 34 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */ 35 #include <linux/power_supply.h> 36 37 #include "hid-ids.h" 38 39 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>"); 40 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>"); 41 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>"); 42 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>"); 43 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad"); 44 45 #define T100_TPAD_INTF 2 46 47 #define T100CHI_MOUSE_REPORT_ID 0x06 48 #define FEATURE_REPORT_ID 0x0d 49 #define INPUT_REPORT_ID 0x5d 50 #define FEATURE_KBD_REPORT_ID 0x5a 51 #define FEATURE_KBD_REPORT_SIZE 16 52 53 #define SUPPORT_KBD_BACKLIGHT BIT(0) 54 55 #define MAX_TOUCH_MAJOR 8 56 #define MAX_PRESSURE 128 57 58 #define BTN_LEFT_MASK 0x01 59 #define CONTACT_TOOL_TYPE_MASK 0x80 60 #define CONTACT_X_MSB_MASK 0xf0 61 #define CONTACT_Y_MSB_MASK 0x0f 62 #define CONTACT_TOUCH_MAJOR_MASK 0x07 63 #define CONTACT_PRESSURE_MASK 0x7f 64 65 #define BATTERY_REPORT_ID (0x03) 66 #define BATTERY_REPORT_SIZE (1 + 8) 67 #define BATTERY_LEVEL_MAX ((u8)255) 68 #define BATTERY_STAT_DISCONNECT (0) 69 #define BATTERY_STAT_CHARGING (1) 70 #define BATTERY_STAT_FULL (2) 71 72 #define QUIRK_FIX_NOTEBOOK_REPORT BIT(0) 73 #define QUIRK_NO_INIT_REPORTS BIT(1) 74 #define QUIRK_SKIP_INPUT_MAPPING BIT(2) 75 #define QUIRK_IS_MULTITOUCH BIT(3) 76 #define QUIRK_NO_CONSUMER_USAGES BIT(4) 77 #define QUIRK_USE_KBD_BACKLIGHT BIT(5) 78 #define QUIRK_T100_KEYBOARD BIT(6) 79 #define QUIRK_T100CHI BIT(7) 80 #define QUIRK_G752_KEYBOARD BIT(8) 81 #define QUIRK_T101HA_DOCK BIT(9) 82 #define QUIRK_T90CHI BIT(10) 83 84 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \ 85 QUIRK_NO_INIT_REPORTS | \ 86 QUIRK_NO_CONSUMER_USAGES) 87 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \ 88 QUIRK_SKIP_INPUT_MAPPING | \ 89 QUIRK_IS_MULTITOUCH) 90 91 #define TRKID_SGN ((TRKID_MAX + 1) >> 1) 92 93 struct asus_kbd_leds { 94 struct led_classdev cdev; 95 struct hid_device *hdev; 96 struct work_struct work; 97 unsigned int brightness; 98 bool removed; 99 }; 100 101 struct asus_touchpad_info { 102 int max_x; 103 int max_y; 104 int res_x; 105 int res_y; 106 int contact_size; 107 int max_contacts; 108 }; 109 110 struct asus_drvdata { 111 unsigned long quirks; 112 struct hid_device *hdev; 113 struct input_dev *input; 114 struct asus_kbd_leds *kbd_backlight; 115 const struct asus_touchpad_info *tp; 116 bool enable_backlight; 117 struct power_supply *battery; 118 struct power_supply_desc battery_desc; 119 int battery_capacity; 120 int battery_stat; 121 bool battery_in_query; 122 unsigned long battery_next_query; 123 }; 124 125 static int asus_report_battery(struct asus_drvdata *, u8 *, int); 126 127 static const struct asus_touchpad_info asus_i2c_tp = { 128 .max_x = 2794, 129 .max_y = 1758, 130 .contact_size = 5, 131 .max_contacts = 5, 132 }; 133 134 static const struct asus_touchpad_info asus_t100ta_tp = { 135 .max_x = 2240, 136 .max_y = 1120, 137 .res_x = 30, /* units/mm */ 138 .res_y = 27, /* units/mm */ 139 .contact_size = 5, 140 .max_contacts = 5, 141 }; 142 143 static const struct asus_touchpad_info asus_t100ha_tp = { 144 .max_x = 2640, 145 .max_y = 1320, 146 .res_x = 30, /* units/mm */ 147 .res_y = 29, /* units/mm */ 148 .contact_size = 5, 149 .max_contacts = 5, 150 }; 151 152 static const struct asus_touchpad_info asus_t200ta_tp = { 153 .max_x = 3120, 154 .max_y = 1716, 155 .res_x = 30, /* units/mm */ 156 .res_y = 28, /* units/mm */ 157 .contact_size = 5, 158 .max_contacts = 5, 159 }; 160 161 static const struct asus_touchpad_info asus_t100chi_tp = { 162 .max_x = 2640, 163 .max_y = 1320, 164 .res_x = 31, /* units/mm */ 165 .res_y = 29, /* units/mm */ 166 .contact_size = 3, 167 .max_contacts = 4, 168 }; 169 170 static void asus_report_contact_down(struct asus_drvdata *drvdat, 171 int toolType, u8 *data) 172 { 173 struct input_dev *input = drvdat->input; 174 int touch_major, pressure, x, y; 175 176 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1]; 177 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]); 178 179 input_report_abs(input, ABS_MT_POSITION_X, x); 180 input_report_abs(input, ABS_MT_POSITION_Y, y); 181 182 if (drvdat->tp->contact_size < 5) 183 return; 184 185 if (toolType == MT_TOOL_PALM) { 186 touch_major = MAX_TOUCH_MAJOR; 187 pressure = MAX_PRESSURE; 188 } else { 189 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK; 190 pressure = data[4] & CONTACT_PRESSURE_MASK; 191 } 192 193 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major); 194 input_report_abs(input, ABS_MT_PRESSURE, pressure); 195 } 196 197 /* Required for Synaptics Palm Detection */ 198 static void asus_report_tool_width(struct asus_drvdata *drvdat) 199 { 200 struct input_mt *mt = drvdat->input->mt; 201 struct input_mt_slot *oldest; 202 int oldid, count, i; 203 204 if (drvdat->tp->contact_size < 5) 205 return; 206 207 oldest = NULL; 208 oldid = mt->trkid; 209 count = 0; 210 211 for (i = 0; i < mt->num_slots; ++i) { 212 struct input_mt_slot *ps = &mt->slots[i]; 213 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); 214 215 if (id < 0) 216 continue; 217 if ((id - oldid) & TRKID_SGN) { 218 oldest = ps; 219 oldid = id; 220 } 221 count++; 222 } 223 224 if (oldest) { 225 input_report_abs(drvdat->input, ABS_TOOL_WIDTH, 226 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR)); 227 } 228 } 229 230 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size) 231 { 232 int i, toolType = MT_TOOL_FINGER; 233 u8 *contactData = data + 2; 234 235 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts) 236 return 0; 237 238 for (i = 0; i < drvdat->tp->max_contacts; i++) { 239 bool down = !!(data[1] & BIT(i+3)); 240 241 if (drvdat->tp->contact_size >= 5) 242 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ? 243 MT_TOOL_PALM : MT_TOOL_FINGER; 244 245 input_mt_slot(drvdat->input, i); 246 input_mt_report_slot_state(drvdat->input, toolType, down); 247 248 if (down) { 249 asus_report_contact_down(drvdat, toolType, contactData); 250 contactData += drvdat->tp->contact_size; 251 } 252 } 253 254 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK); 255 asus_report_tool_width(drvdat); 256 257 input_mt_sync_frame(drvdat->input); 258 input_sync(drvdat->input); 259 260 return 1; 261 } 262 263 static int asus_event(struct hid_device *hdev, struct hid_field *field, 264 struct hid_usage *usage, __s32 value) 265 { 266 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 && 267 (usage->hid & HID_USAGE) != 0x00 && !usage->type) { 268 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n", 269 usage->hid & HID_USAGE); 270 } 271 272 return 0; 273 } 274 275 static int asus_raw_event(struct hid_device *hdev, 276 struct hid_report *report, u8 *data, int size) 277 { 278 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 279 280 if (drvdata->battery && data[0] == BATTERY_REPORT_ID) 281 return asus_report_battery(drvdata, data, size); 282 283 if (drvdata->tp && data[0] == INPUT_REPORT_ID) 284 return asus_report_input(drvdata, data, size); 285 286 return 0; 287 } 288 289 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size) 290 { 291 unsigned char *dmabuf; 292 int ret; 293 294 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL); 295 if (!dmabuf) 296 return -ENOMEM; 297 298 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf, 299 buf_size, HID_FEATURE_REPORT, 300 HID_REQ_SET_REPORT); 301 kfree(dmabuf); 302 303 return ret; 304 } 305 306 static int asus_kbd_init(struct hid_device *hdev) 307 { 308 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54, 309 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 }; 310 int ret; 311 312 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 313 if (ret < 0) 314 hid_err(hdev, "Asus failed to send init command: %d\n", ret); 315 316 return ret; 317 } 318 319 static int asus_kbd_get_functions(struct hid_device *hdev, 320 unsigned char *kbd_func) 321 { 322 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 }; 323 u8 *readbuf; 324 int ret; 325 326 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 327 if (ret < 0) { 328 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret); 329 return ret; 330 } 331 332 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL); 333 if (!readbuf) 334 return -ENOMEM; 335 336 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf, 337 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT, 338 HID_REQ_GET_REPORT); 339 if (ret < 0) { 340 hid_err(hdev, "Asus failed to request functions: %d\n", ret); 341 kfree(readbuf); 342 return ret; 343 } 344 345 *kbd_func = readbuf[6]; 346 347 kfree(readbuf); 348 return ret; 349 } 350 351 static void asus_kbd_backlight_set(struct led_classdev *led_cdev, 352 enum led_brightness brightness) 353 { 354 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 355 cdev); 356 if (led->brightness == brightness) 357 return; 358 359 led->brightness = brightness; 360 schedule_work(&led->work); 361 } 362 363 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev) 364 { 365 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 366 cdev); 367 368 return led->brightness; 369 } 370 371 static void asus_kbd_backlight_work(struct work_struct *work) 372 { 373 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work); 374 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 }; 375 int ret; 376 377 if (led->removed) 378 return; 379 380 buf[4] = led->brightness; 381 382 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf)); 383 if (ret < 0) 384 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret); 385 } 386 387 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes 388 * precedence. We only activate HID-based backlight control when the 389 * WMI control is not available. 390 */ 391 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev) 392 { 393 u32 value; 394 int ret; 395 396 if (!IS_ENABLED(CONFIG_ASUS_WMI)) 397 return false; 398 399 ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 400 ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value); 401 hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value); 402 if (ret) 403 return false; 404 405 return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT); 406 } 407 408 static int asus_kbd_register_leds(struct hid_device *hdev) 409 { 410 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 411 unsigned char kbd_func; 412 int ret; 413 414 /* Initialize keyboard */ 415 ret = asus_kbd_init(hdev); 416 if (ret < 0) 417 return ret; 418 419 /* Get keyboard functions */ 420 ret = asus_kbd_get_functions(hdev, &kbd_func); 421 if (ret < 0) 422 return ret; 423 424 /* Check for backlight support */ 425 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT)) 426 return -ENODEV; 427 428 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev, 429 sizeof(struct asus_kbd_leds), 430 GFP_KERNEL); 431 if (!drvdata->kbd_backlight) 432 return -ENOMEM; 433 434 drvdata->kbd_backlight->removed = false; 435 drvdata->kbd_backlight->brightness = 0; 436 drvdata->kbd_backlight->hdev = hdev; 437 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight"; 438 drvdata->kbd_backlight->cdev.max_brightness = 3; 439 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set; 440 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get; 441 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work); 442 443 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev); 444 if (ret < 0) { 445 /* No need to have this still around */ 446 devm_kfree(&hdev->dev, drvdata->kbd_backlight); 447 } 448 449 return ret; 450 } 451 452 /* 453 * [0] REPORT_ID (same value defined in report descriptor) 454 * [1] rest battery level. range [0..255] 455 * [2]..[7] Bluetooth hardware address (MAC address) 456 * [8] charging status 457 * = 0 : AC offline / discharging 458 * = 1 : AC online / charging 459 * = 2 : AC online / fully charged 460 */ 461 static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size) 462 { 463 u8 sts; 464 u8 lvl; 465 int val; 466 467 lvl = data[1]; 468 sts = data[8]; 469 470 drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX; 471 472 switch (sts) { 473 case BATTERY_STAT_CHARGING: 474 val = POWER_SUPPLY_STATUS_CHARGING; 475 break; 476 case BATTERY_STAT_FULL: 477 val = POWER_SUPPLY_STATUS_FULL; 478 break; 479 case BATTERY_STAT_DISCONNECT: 480 default: 481 val = POWER_SUPPLY_STATUS_DISCHARGING; 482 break; 483 } 484 drvdata->battery_stat = val; 485 486 return 0; 487 } 488 489 static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size) 490 { 491 /* notify only the autonomous event by device */ 492 if ((drvdata->battery_in_query == false) && 493 (size == BATTERY_REPORT_SIZE)) 494 power_supply_changed(drvdata->battery); 495 496 return 0; 497 } 498 499 static int asus_battery_query(struct asus_drvdata *drvdata) 500 { 501 u8 *buf; 502 int ret = 0; 503 504 buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL); 505 if (!buf) 506 return -ENOMEM; 507 508 drvdata->battery_in_query = true; 509 ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID, 510 buf, BATTERY_REPORT_SIZE, 511 HID_INPUT_REPORT, HID_REQ_GET_REPORT); 512 drvdata->battery_in_query = false; 513 if (ret == BATTERY_REPORT_SIZE) 514 ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE); 515 else 516 ret = -ENODATA; 517 518 kfree(buf); 519 520 return ret; 521 } 522 523 static enum power_supply_property asus_battery_props[] = { 524 POWER_SUPPLY_PROP_STATUS, 525 POWER_SUPPLY_PROP_PRESENT, 526 POWER_SUPPLY_PROP_CAPACITY, 527 POWER_SUPPLY_PROP_SCOPE, 528 POWER_SUPPLY_PROP_MODEL_NAME, 529 }; 530 531 #define QUERY_MIN_INTERVAL (60 * HZ) /* 60[sec] */ 532 533 static int asus_battery_get_property(struct power_supply *psy, 534 enum power_supply_property psp, 535 union power_supply_propval *val) 536 { 537 struct asus_drvdata *drvdata = power_supply_get_drvdata(psy); 538 int ret = 0; 539 540 switch (psp) { 541 case POWER_SUPPLY_PROP_STATUS: 542 case POWER_SUPPLY_PROP_CAPACITY: 543 if (time_before(drvdata->battery_next_query, jiffies)) { 544 drvdata->battery_next_query = 545 jiffies + QUERY_MIN_INTERVAL; 546 ret = asus_battery_query(drvdata); 547 if (ret) 548 return ret; 549 } 550 if (psp == POWER_SUPPLY_PROP_STATUS) 551 val->intval = drvdata->battery_stat; 552 else 553 val->intval = drvdata->battery_capacity; 554 break; 555 case POWER_SUPPLY_PROP_PRESENT: 556 val->intval = 1; 557 break; 558 case POWER_SUPPLY_PROP_SCOPE: 559 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 560 break; 561 case POWER_SUPPLY_PROP_MODEL_NAME: 562 val->strval = drvdata->hdev->name; 563 break; 564 default: 565 ret = -EINVAL; 566 break; 567 } 568 569 return ret; 570 } 571 572 static int asus_battery_probe(struct hid_device *hdev) 573 { 574 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 575 struct power_supply_config pscfg = { .drv_data = drvdata }; 576 int ret = 0; 577 578 drvdata->battery_capacity = 0; 579 drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN; 580 drvdata->battery_in_query = false; 581 582 drvdata->battery_desc.properties = asus_battery_props; 583 drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props); 584 drvdata->battery_desc.get_property = asus_battery_get_property; 585 drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY; 586 drvdata->battery_desc.use_for_apm = 0; 587 drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 588 "asus-keyboard-%s-battery", 589 strlen(hdev->uniq) ? 590 hdev->uniq : dev_name(&hdev->dev)); 591 if (!drvdata->battery_desc.name) 592 return -ENOMEM; 593 594 drvdata->battery_next_query = jiffies; 595 596 drvdata->battery = devm_power_supply_register(&hdev->dev, 597 &(drvdata->battery_desc), &pscfg); 598 if (IS_ERR(drvdata->battery)) { 599 ret = PTR_ERR(drvdata->battery); 600 drvdata->battery = NULL; 601 hid_err(hdev, "Unable to register battery device\n"); 602 return ret; 603 } 604 605 power_supply_powers(drvdata->battery, &hdev->dev); 606 607 return ret; 608 } 609 610 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) 611 { 612 struct input_dev *input = hi->input; 613 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 614 615 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */ 616 if (drvdata->quirks & QUIRK_T100CHI && 617 hi->report->id != T100CHI_MOUSE_REPORT_ID) 618 return 0; 619 620 if (drvdata->tp) { 621 int ret; 622 623 input_set_abs_params(input, ABS_MT_POSITION_X, 0, 624 drvdata->tp->max_x, 0, 0); 625 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 626 drvdata->tp->max_y, 0, 0); 627 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x); 628 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y); 629 630 if (drvdata->tp->contact_size >= 5) { 631 input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 632 MAX_TOUCH_MAJOR, 0, 0); 633 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 634 MAX_TOUCH_MAJOR, 0, 0); 635 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 636 MAX_PRESSURE, 0, 0); 637 } 638 639 __set_bit(BTN_LEFT, input->keybit); 640 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 641 642 ret = input_mt_init_slots(input, drvdata->tp->max_contacts, 643 INPUT_MT_POINTER); 644 645 if (ret) { 646 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret); 647 return ret; 648 } 649 } 650 651 drvdata->input = input; 652 653 if (drvdata->enable_backlight && 654 !asus_kbd_wmi_led_control_present(hdev) && 655 asus_kbd_register_leds(hdev)) 656 hid_warn(hdev, "Failed to initialize backlight.\n"); 657 658 return 0; 659 } 660 661 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 662 max, EV_KEY, (c)) 663 static int asus_input_mapping(struct hid_device *hdev, 664 struct hid_input *hi, struct hid_field *field, 665 struct hid_usage *usage, unsigned long **bit, 666 int *max) 667 { 668 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 669 670 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) { 671 /* Don't map anything from the HID report. 672 * We do it all manually in asus_input_configured 673 */ 674 return -1; 675 } 676 677 /* 678 * Ignore a bunch of bogus collections in the T100CHI descriptor. 679 * This avoids a bunch of non-functional hid_input devices getting 680 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT. 681 */ 682 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) { 683 if (field->application == (HID_UP_GENDESK | 0x0080) || 684 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) || 685 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) || 686 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)) 687 return -1; 688 /* 689 * We use the hid_input for the mouse report for the touchpad, 690 * keep the left button, to avoid the core removing it. 691 */ 692 if (field->application == HID_GD_MOUSE && 693 usage->hid != (HID_UP_BUTTON | 1)) 694 return -1; 695 } 696 697 /* ASUS-specific keyboard hotkeys */ 698 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) { 699 set_bit(EV_REP, hi->input->evbit); 700 switch (usage->hid & HID_USAGE) { 701 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 702 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 703 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break; 704 case 0x6c: asus_map_key_clear(KEY_SLEEP); break; 705 case 0x7c: asus_map_key_clear(KEY_MICMUTE); break; 706 case 0x82: asus_map_key_clear(KEY_CAMERA); break; 707 case 0x88: asus_map_key_clear(KEY_RFKILL); break; 708 case 0xb5: asus_map_key_clear(KEY_CALC); break; 709 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break; 710 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break; 711 712 /* ASUS touchpad toggle */ 713 case 0x6b: asus_map_key_clear(KEY_F21); break; 714 715 /* ROG key */ 716 case 0x38: asus_map_key_clear(KEY_PROG1); break; 717 718 /* Fn+C ASUS Splendid */ 719 case 0xba: asus_map_key_clear(KEY_PROG2); break; 720 721 /* Fn+Space Power4Gear Hybrid */ 722 case 0x5c: asus_map_key_clear(KEY_PROG3); break; 723 724 /* Fn+F5 "fan" symbol on FX503VD */ 725 case 0x99: asus_map_key_clear(KEY_PROG4); break; 726 727 default: 728 /* ASUS lazily declares 256 usages, ignore the rest, 729 * as some make the keyboard appear as a pointer device. */ 730 return -1; 731 } 732 733 /* 734 * Check and enable backlight only on devices with UsagePage == 735 * 0xff31 to avoid initializing the keyboard firmware multiple 736 * times on devices with multiple HID descriptors but same 737 * PID/VID. 738 */ 739 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) 740 drvdata->enable_backlight = true; 741 742 return 1; 743 } 744 745 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) { 746 set_bit(EV_REP, hi->input->evbit); 747 switch (usage->hid & HID_USAGE) { 748 case 0xff01: asus_map_key_clear(BTN_1); break; 749 case 0xff02: asus_map_key_clear(BTN_2); break; 750 case 0xff03: asus_map_key_clear(BTN_3); break; 751 case 0xff04: asus_map_key_clear(BTN_4); break; 752 case 0xff05: asus_map_key_clear(BTN_5); break; 753 case 0xff06: asus_map_key_clear(BTN_6); break; 754 case 0xff07: asus_map_key_clear(BTN_7); break; 755 case 0xff08: asus_map_key_clear(BTN_8); break; 756 case 0xff09: asus_map_key_clear(BTN_9); break; 757 case 0xff0a: asus_map_key_clear(BTN_A); break; 758 case 0xff0b: asus_map_key_clear(BTN_B); break; 759 case 0x00f1: asus_map_key_clear(KEY_WLAN); break; 760 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 761 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 762 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break; 763 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break; 764 case 0x00f8: asus_map_key_clear(KEY_PROG1); break; 765 default: 766 return 0; 767 } 768 769 return 1; 770 } 771 772 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES && 773 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) { 774 switch (usage->hid & HID_USAGE) { 775 case 0xe2: /* Mute */ 776 case 0xe9: /* Volume up */ 777 case 0xea: /* Volume down */ 778 return 0; 779 default: 780 /* Ignore dummy Consumer usages which make the 781 * keyboard incorrectly appear as a pointer device. 782 */ 783 return -1; 784 } 785 } 786 787 return 0; 788 } 789 790 static int asus_start_multitouch(struct hid_device *hdev) 791 { 792 int ret; 793 static const unsigned char buf[] = { 794 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 795 }; 796 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL); 797 798 if (!dmabuf) { 799 ret = -ENOMEM; 800 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret); 801 return ret; 802 } 803 804 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf), 805 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 806 807 kfree(dmabuf); 808 809 if (ret != sizeof(buf)) { 810 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret); 811 return ret; 812 } 813 814 return 0; 815 } 816 817 static int __maybe_unused asus_reset_resume(struct hid_device *hdev) 818 { 819 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 820 821 if (drvdata->tp) 822 return asus_start_multitouch(hdev); 823 824 return 0; 825 } 826 827 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id) 828 { 829 int ret; 830 struct asus_drvdata *drvdata; 831 832 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL); 833 if (drvdata == NULL) { 834 hid_err(hdev, "Can't alloc Asus descriptor\n"); 835 return -ENOMEM; 836 } 837 838 hid_set_drvdata(hdev, drvdata); 839 840 drvdata->quirks = id->driver_data; 841 842 /* 843 * T90CHI's keyboard dock returns same ID values as T100CHI's dock. 844 * Thus, identify T90CHI dock with product name string. 845 */ 846 if (strstr(hdev->name, "T90CHI")) { 847 drvdata->quirks &= ~QUIRK_T100CHI; 848 drvdata->quirks |= QUIRK_T90CHI; 849 } 850 851 if (drvdata->quirks & QUIRK_IS_MULTITOUCH) 852 drvdata->tp = &asus_i2c_tp; 853 854 if (drvdata->quirks & QUIRK_T100_KEYBOARD) { 855 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 856 857 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) { 858 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING; 859 /* 860 * The T100HA uses the same USB-ids as the T100TAF and 861 * the T200TA uses the same USB-ids as the T100TA, while 862 * both have different max x/y values as the T100TA[F]. 863 */ 864 if (dmi_match(DMI_PRODUCT_NAME, "T100HAN")) 865 drvdata->tp = &asus_t100ha_tp; 866 else if (dmi_match(DMI_PRODUCT_NAME, "T200TA")) 867 drvdata->tp = &asus_t200ta_tp; 868 else 869 drvdata->tp = &asus_t100ta_tp; 870 } 871 } 872 873 if (drvdata->quirks & QUIRK_T100CHI) { 874 /* 875 * All functionality is on a single HID interface and for 876 * userspace the touchpad must be a separate input_dev. 877 */ 878 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 879 drvdata->tp = &asus_t100chi_tp; 880 } 881 882 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS) 883 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 884 885 drvdata->hdev = hdev; 886 887 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) { 888 ret = asus_battery_probe(hdev); 889 if (ret) { 890 hid_err(hdev, 891 "Asus hid battery_probe failed: %d\n", ret); 892 return ret; 893 } 894 } 895 896 ret = hid_parse(hdev); 897 if (ret) { 898 hid_err(hdev, "Asus hid parse failed: %d\n", ret); 899 return ret; 900 } 901 902 /* use hid-multitouch for T101HA touchpad */ 903 if (id->driver_data & QUIRK_T101HA_DOCK && 904 hdev->collection->usage == HID_GD_MOUSE) 905 return -ENODEV; 906 907 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 908 if (ret) { 909 hid_err(hdev, "Asus hw start failed: %d\n", ret); 910 return ret; 911 } 912 913 if (!drvdata->input) { 914 hid_err(hdev, "Asus input not registered\n"); 915 ret = -ENOMEM; 916 goto err_stop_hw; 917 } 918 919 if (drvdata->tp) { 920 drvdata->input->name = "Asus TouchPad"; 921 } else { 922 drvdata->input->name = "Asus Keyboard"; 923 } 924 925 if (drvdata->tp) { 926 ret = asus_start_multitouch(hdev); 927 if (ret) 928 goto err_stop_hw; 929 } 930 931 return 0; 932 err_stop_hw: 933 hid_hw_stop(hdev); 934 return ret; 935 } 936 937 static void asus_remove(struct hid_device *hdev) 938 { 939 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 940 941 if (drvdata->kbd_backlight) { 942 drvdata->kbd_backlight->removed = true; 943 cancel_work_sync(&drvdata->kbd_backlight->work); 944 } 945 946 hid_hw_stop(hdev); 947 } 948 949 static const __u8 asus_g752_fixed_rdesc[] = { 950 0x19, 0x00, /* Usage Minimum (0x00) */ 951 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */ 952 }; 953 954 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc, 955 unsigned int *rsize) 956 { 957 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 958 959 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT && 960 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) { 961 hid_info(hdev, "Fixing up Asus notebook report descriptor\n"); 962 rdesc[55] = 0xdd; 963 } 964 /* For the T100TA/T200TA keyboard dock */ 965 if (drvdata->quirks & QUIRK_T100_KEYBOARD && 966 (*rsize == 76 || *rsize == 101) && 967 rdesc[73] == 0x81 && rdesc[74] == 0x01) { 968 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n"); 969 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT; 970 } 971 /* For the T100CHI/T90CHI keyboard dock */ 972 if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) { 973 int rsize_orig; 974 int offs; 975 976 if (drvdata->quirks & QUIRK_T100CHI) { 977 rsize_orig = 403; 978 offs = 388; 979 } else { 980 rsize_orig = 306; 981 offs = 291; 982 } 983 984 /* 985 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum 986 * (FFh) and clear the flags in the Input() byte. 987 * Note the descriptor has a bogus 0 byte at the end so we 988 * only need 1 extra byte. 989 */ 990 if (*rsize == rsize_orig && 991 rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) { 992 *rsize = rsize_orig + 1; 993 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL); 994 if (!rdesc) 995 return NULL; 996 997 hid_info(hdev, "Fixing up %s keyb report descriptor\n", 998 drvdata->quirks & QUIRK_T100CHI ? 999 "T100CHI" : "T90CHI"); 1000 memmove(rdesc + offs + 4, rdesc + offs + 2, 12); 1001 rdesc[offs] = 0x19; 1002 rdesc[offs + 1] = 0x00; 1003 rdesc[offs + 2] = 0x29; 1004 rdesc[offs + 3] = 0xff; 1005 rdesc[offs + 14] = 0x00; 1006 } 1007 } 1008 1009 if (drvdata->quirks & QUIRK_G752_KEYBOARD && 1010 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) { 1011 /* report is missing usage mninum and maximum */ 1012 __u8 *new_rdesc; 1013 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc); 1014 1015 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL); 1016 if (new_rdesc == NULL) 1017 return rdesc; 1018 1019 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n"); 1020 /* copy the valid part */ 1021 memcpy(new_rdesc, rdesc, 61); 1022 /* insert missing part */ 1023 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc)); 1024 /* copy remaining data */ 1025 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61); 1026 1027 *rsize = new_size; 1028 rdesc = new_rdesc; 1029 } 1030 1031 return rdesc; 1032 } 1033 1034 static const struct hid_device_id asus_devices[] = { 1035 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 1036 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS}, 1037 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 1038 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS }, 1039 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1040 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT }, 1041 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1042 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT }, 1043 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1044 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD }, 1045 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1046 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD), 1047 QUIRK_USE_KBD_BACKLIGHT }, 1048 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1049 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD), 1050 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 1051 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1052 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD), 1053 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 1054 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 1055 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD), QUIRK_T101HA_DOCK }, 1056 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) }, 1057 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) }, 1058 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) }, 1059 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 1060 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI }, 1061 1062 { } 1063 }; 1064 MODULE_DEVICE_TABLE(hid, asus_devices); 1065 1066 static struct hid_driver asus_driver = { 1067 .name = "asus", 1068 .id_table = asus_devices, 1069 .report_fixup = asus_report_fixup, 1070 .probe = asus_probe, 1071 .remove = asus_remove, 1072 .input_mapping = asus_input_mapping, 1073 .input_configured = asus_input_configured, 1074 #ifdef CONFIG_PM 1075 .reset_resume = asus_reset_resume, 1076 #endif 1077 .event = asus_event, 1078 .raw_event = asus_raw_event 1079 }; 1080 module_hid_driver(asus_driver); 1081 1082 MODULE_LICENSE("GPL"); 1083