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/input/mt.h> 33 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */ 34 35 #include "hid-ids.h" 36 37 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>"); 38 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>"); 39 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>"); 40 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>"); 41 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad"); 42 43 #define T100_TPAD_INTF 2 44 45 #define T100CHI_MOUSE_REPORT_ID 0x06 46 #define FEATURE_REPORT_ID 0x0d 47 #define INPUT_REPORT_ID 0x5d 48 #define FEATURE_KBD_REPORT_ID 0x5a 49 #define FEATURE_KBD_REPORT_SIZE 16 50 51 #define SUPPORT_KBD_BACKLIGHT BIT(0) 52 53 #define MAX_TOUCH_MAJOR 8 54 #define MAX_PRESSURE 128 55 56 #define BTN_LEFT_MASK 0x01 57 #define CONTACT_TOOL_TYPE_MASK 0x80 58 #define CONTACT_X_MSB_MASK 0xf0 59 #define CONTACT_Y_MSB_MASK 0x0f 60 #define CONTACT_TOUCH_MAJOR_MASK 0x07 61 #define CONTACT_PRESSURE_MASK 0x7f 62 63 #define QUIRK_FIX_NOTEBOOK_REPORT BIT(0) 64 #define QUIRK_NO_INIT_REPORTS BIT(1) 65 #define QUIRK_SKIP_INPUT_MAPPING BIT(2) 66 #define QUIRK_IS_MULTITOUCH BIT(3) 67 #define QUIRK_NO_CONSUMER_USAGES BIT(4) 68 #define QUIRK_USE_KBD_BACKLIGHT BIT(5) 69 #define QUIRK_T100_KEYBOARD BIT(6) 70 #define QUIRK_T100CHI BIT(7) 71 #define QUIRK_G752_KEYBOARD BIT(8) 72 73 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \ 74 QUIRK_NO_INIT_REPORTS | \ 75 QUIRK_NO_CONSUMER_USAGES) 76 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \ 77 QUIRK_SKIP_INPUT_MAPPING | \ 78 QUIRK_IS_MULTITOUCH) 79 80 #define TRKID_SGN ((TRKID_MAX + 1) >> 1) 81 82 struct asus_kbd_leds { 83 struct led_classdev cdev; 84 struct hid_device *hdev; 85 struct work_struct work; 86 unsigned int brightness; 87 bool removed; 88 }; 89 90 struct asus_touchpad_info { 91 int max_x; 92 int max_y; 93 int res_x; 94 int res_y; 95 int contact_size; 96 int max_contacts; 97 }; 98 99 struct asus_drvdata { 100 unsigned long quirks; 101 struct input_dev *input; 102 struct asus_kbd_leds *kbd_backlight; 103 const struct asus_touchpad_info *tp; 104 bool enable_backlight; 105 }; 106 107 static const struct asus_touchpad_info asus_i2c_tp = { 108 .max_x = 2794, 109 .max_y = 1758, 110 .contact_size = 5, 111 .max_contacts = 5, 112 }; 113 114 static const struct asus_touchpad_info asus_t100ta_tp = { 115 .max_x = 2240, 116 .max_y = 1120, 117 .res_x = 30, /* units/mm */ 118 .res_y = 27, /* units/mm */ 119 .contact_size = 5, 120 .max_contacts = 5, 121 }; 122 123 static const struct asus_touchpad_info asus_t100ha_tp = { 124 .max_x = 2640, 125 .max_y = 1320, 126 .res_x = 30, /* units/mm */ 127 .res_y = 29, /* units/mm */ 128 .contact_size = 5, 129 .max_contacts = 5, 130 }; 131 132 static const struct asus_touchpad_info asus_t200ta_tp = { 133 .max_x = 3120, 134 .max_y = 1716, 135 .res_x = 30, /* units/mm */ 136 .res_y = 28, /* units/mm */ 137 .contact_size = 5, 138 .max_contacts = 5, 139 }; 140 141 static const struct asus_touchpad_info asus_t100chi_tp = { 142 .max_x = 2640, 143 .max_y = 1320, 144 .res_x = 31, /* units/mm */ 145 .res_y = 29, /* units/mm */ 146 .contact_size = 3, 147 .max_contacts = 4, 148 }; 149 150 static void asus_report_contact_down(struct asus_drvdata *drvdat, 151 int toolType, u8 *data) 152 { 153 struct input_dev *input = drvdat->input; 154 int touch_major, pressure, x, y; 155 156 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1]; 157 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]); 158 159 input_report_abs(input, ABS_MT_POSITION_X, x); 160 input_report_abs(input, ABS_MT_POSITION_Y, y); 161 162 if (drvdat->tp->contact_size < 5) 163 return; 164 165 if (toolType == MT_TOOL_PALM) { 166 touch_major = MAX_TOUCH_MAJOR; 167 pressure = MAX_PRESSURE; 168 } else { 169 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK; 170 pressure = data[4] & CONTACT_PRESSURE_MASK; 171 } 172 173 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major); 174 input_report_abs(input, ABS_MT_PRESSURE, pressure); 175 } 176 177 /* Required for Synaptics Palm Detection */ 178 static void asus_report_tool_width(struct asus_drvdata *drvdat) 179 { 180 struct input_mt *mt = drvdat->input->mt; 181 struct input_mt_slot *oldest; 182 int oldid, count, i; 183 184 if (drvdat->tp->contact_size < 5) 185 return; 186 187 oldest = NULL; 188 oldid = mt->trkid; 189 count = 0; 190 191 for (i = 0; i < mt->num_slots; ++i) { 192 struct input_mt_slot *ps = &mt->slots[i]; 193 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); 194 195 if (id < 0) 196 continue; 197 if ((id - oldid) & TRKID_SGN) { 198 oldest = ps; 199 oldid = id; 200 } 201 count++; 202 } 203 204 if (oldest) { 205 input_report_abs(drvdat->input, ABS_TOOL_WIDTH, 206 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR)); 207 } 208 } 209 210 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size) 211 { 212 int i, toolType = MT_TOOL_FINGER; 213 u8 *contactData = data + 2; 214 215 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts) 216 return 0; 217 218 for (i = 0; i < drvdat->tp->max_contacts; i++) { 219 bool down = !!(data[1] & BIT(i+3)); 220 221 if (drvdat->tp->contact_size >= 5) 222 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ? 223 MT_TOOL_PALM : MT_TOOL_FINGER; 224 225 input_mt_slot(drvdat->input, i); 226 input_mt_report_slot_state(drvdat->input, toolType, down); 227 228 if (down) { 229 asus_report_contact_down(drvdat, toolType, contactData); 230 contactData += drvdat->tp->contact_size; 231 } 232 } 233 234 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK); 235 asus_report_tool_width(drvdat); 236 237 input_mt_sync_frame(drvdat->input); 238 input_sync(drvdat->input); 239 240 return 1; 241 } 242 243 static int asus_raw_event(struct hid_device *hdev, 244 struct hid_report *report, u8 *data, int size) 245 { 246 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 247 248 if (drvdata->tp && data[0] == INPUT_REPORT_ID) 249 return asus_report_input(drvdata, data, size); 250 251 return 0; 252 } 253 254 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size) 255 { 256 unsigned char *dmabuf; 257 int ret; 258 259 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL); 260 if (!dmabuf) 261 return -ENOMEM; 262 263 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf, 264 buf_size, HID_FEATURE_REPORT, 265 HID_REQ_SET_REPORT); 266 kfree(dmabuf); 267 268 return ret; 269 } 270 271 static int asus_kbd_init(struct hid_device *hdev) 272 { 273 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54, 274 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 }; 275 int ret; 276 277 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 278 if (ret < 0) 279 hid_err(hdev, "Asus failed to send init command: %d\n", ret); 280 281 return ret; 282 } 283 284 static int asus_kbd_get_functions(struct hid_device *hdev, 285 unsigned char *kbd_func) 286 { 287 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 }; 288 u8 *readbuf; 289 int ret; 290 291 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 292 if (ret < 0) { 293 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret); 294 return ret; 295 } 296 297 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL); 298 if (!readbuf) 299 return -ENOMEM; 300 301 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf, 302 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT, 303 HID_REQ_GET_REPORT); 304 if (ret < 0) { 305 hid_err(hdev, "Asus failed to request functions: %d\n", ret); 306 kfree(readbuf); 307 return ret; 308 } 309 310 *kbd_func = readbuf[6]; 311 312 kfree(readbuf); 313 return ret; 314 } 315 316 static void asus_kbd_backlight_set(struct led_classdev *led_cdev, 317 enum led_brightness brightness) 318 { 319 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 320 cdev); 321 if (led->brightness == brightness) 322 return; 323 324 led->brightness = brightness; 325 schedule_work(&led->work); 326 } 327 328 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev) 329 { 330 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 331 cdev); 332 333 return led->brightness; 334 } 335 336 static void asus_kbd_backlight_work(struct work_struct *work) 337 { 338 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work); 339 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 }; 340 int ret; 341 342 if (led->removed) 343 return; 344 345 buf[4] = led->brightness; 346 347 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf)); 348 if (ret < 0) 349 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret); 350 } 351 352 static int asus_kbd_register_leds(struct hid_device *hdev) 353 { 354 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 355 unsigned char kbd_func; 356 int ret; 357 358 /* Initialize keyboard */ 359 ret = asus_kbd_init(hdev); 360 if (ret < 0) 361 return ret; 362 363 /* Get keyboard functions */ 364 ret = asus_kbd_get_functions(hdev, &kbd_func); 365 if (ret < 0) 366 return ret; 367 368 /* Check for backlight support */ 369 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT)) 370 return -ENODEV; 371 372 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev, 373 sizeof(struct asus_kbd_leds), 374 GFP_KERNEL); 375 if (!drvdata->kbd_backlight) 376 return -ENOMEM; 377 378 drvdata->kbd_backlight->removed = false; 379 drvdata->kbd_backlight->brightness = 0; 380 drvdata->kbd_backlight->hdev = hdev; 381 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight"; 382 drvdata->kbd_backlight->cdev.max_brightness = 3; 383 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set; 384 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get; 385 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work); 386 387 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev); 388 if (ret < 0) { 389 /* No need to have this still around */ 390 devm_kfree(&hdev->dev, drvdata->kbd_backlight); 391 } 392 393 return ret; 394 } 395 396 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) 397 { 398 struct input_dev *input = hi->input; 399 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 400 401 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */ 402 if (drvdata->quirks & QUIRK_T100CHI && 403 hi->report->id != T100CHI_MOUSE_REPORT_ID) 404 return 0; 405 406 if (drvdata->tp) { 407 int ret; 408 409 input_set_abs_params(input, ABS_MT_POSITION_X, 0, 410 drvdata->tp->max_x, 0, 0); 411 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 412 drvdata->tp->max_y, 0, 0); 413 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x); 414 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y); 415 416 if (drvdata->tp->contact_size >= 5) { 417 input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 418 MAX_TOUCH_MAJOR, 0, 0); 419 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 420 MAX_TOUCH_MAJOR, 0, 0); 421 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 422 MAX_PRESSURE, 0, 0); 423 } 424 425 __set_bit(BTN_LEFT, input->keybit); 426 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 427 428 ret = input_mt_init_slots(input, drvdata->tp->max_contacts, 429 INPUT_MT_POINTER); 430 431 if (ret) { 432 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret); 433 return ret; 434 } 435 } 436 437 drvdata->input = input; 438 439 if (drvdata->enable_backlight && asus_kbd_register_leds(hdev)) 440 hid_warn(hdev, "Failed to initialize backlight.\n"); 441 442 return 0; 443 } 444 445 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 446 max, EV_KEY, (c)) 447 static int asus_input_mapping(struct hid_device *hdev, 448 struct hid_input *hi, struct hid_field *field, 449 struct hid_usage *usage, unsigned long **bit, 450 int *max) 451 { 452 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 453 454 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) { 455 /* Don't map anything from the HID report. 456 * We do it all manually in asus_input_configured 457 */ 458 return -1; 459 } 460 461 /* 462 * Ignore a bunch of bogus collections in the T100CHI descriptor. 463 * This avoids a bunch of non-functional hid_input devices getting 464 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT. 465 */ 466 if (drvdata->quirks & QUIRK_T100CHI) { 467 if (field->application == (HID_UP_GENDESK | 0x0080) || 468 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) || 469 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) || 470 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)) 471 return -1; 472 /* 473 * We use the hid_input for the mouse report for the touchpad, 474 * keep the left button, to avoid the core removing it. 475 */ 476 if (field->application == HID_GD_MOUSE && 477 usage->hid != (HID_UP_BUTTON | 1)) 478 return -1; 479 } 480 481 /* ASUS-specific keyboard hotkeys */ 482 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) { 483 set_bit(EV_REP, hi->input->evbit); 484 switch (usage->hid & HID_USAGE) { 485 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 486 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 487 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break; 488 case 0x6c: asus_map_key_clear(KEY_SLEEP); break; 489 case 0x82: asus_map_key_clear(KEY_CAMERA); break; 490 case 0x88: asus_map_key_clear(KEY_RFKILL); break; 491 case 0xb5: asus_map_key_clear(KEY_CALC); break; 492 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break; 493 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break; 494 495 /* ASUS touchpad toggle */ 496 case 0x6b: asus_map_key_clear(KEY_F21); break; 497 498 /* ROG key */ 499 case 0x38: asus_map_key_clear(KEY_PROG1); break; 500 501 /* Fn+C ASUS Splendid */ 502 case 0xba: asus_map_key_clear(KEY_PROG2); break; 503 504 /* Fn+Space Power4Gear Hybrid */ 505 case 0x5c: asus_map_key_clear(KEY_PROG3); break; 506 507 default: 508 /* ASUS lazily declares 256 usages, ignore the rest, 509 * as some make the keyboard appear as a pointer device. */ 510 return -1; 511 } 512 513 /* 514 * Check and enable backlight only on devices with UsagePage == 515 * 0xff31 to avoid initializing the keyboard firmware multiple 516 * times on devices with multiple HID descriptors but same 517 * PID/VID. 518 */ 519 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) 520 drvdata->enable_backlight = true; 521 522 return 1; 523 } 524 525 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) { 526 set_bit(EV_REP, hi->input->evbit); 527 switch (usage->hid & HID_USAGE) { 528 case 0xff01: asus_map_key_clear(BTN_1); break; 529 case 0xff02: asus_map_key_clear(BTN_2); break; 530 case 0xff03: asus_map_key_clear(BTN_3); break; 531 case 0xff04: asus_map_key_clear(BTN_4); break; 532 case 0xff05: asus_map_key_clear(BTN_5); break; 533 case 0xff06: asus_map_key_clear(BTN_6); break; 534 case 0xff07: asus_map_key_clear(BTN_7); break; 535 case 0xff08: asus_map_key_clear(BTN_8); break; 536 case 0xff09: asus_map_key_clear(BTN_9); break; 537 case 0xff0a: asus_map_key_clear(BTN_A); break; 538 case 0xff0b: asus_map_key_clear(BTN_B); break; 539 case 0x00f1: asus_map_key_clear(KEY_WLAN); break; 540 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 541 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 542 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break; 543 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break; 544 case 0x00f8: asus_map_key_clear(KEY_PROG1); break; 545 default: 546 return 0; 547 } 548 549 return 1; 550 } 551 552 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES && 553 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) { 554 switch (usage->hid & HID_USAGE) { 555 case 0xe2: /* Mute */ 556 case 0xe9: /* Volume up */ 557 case 0xea: /* Volume down */ 558 return 0; 559 default: 560 /* Ignore dummy Consumer usages which make the 561 * keyboard incorrectly appear as a pointer device. 562 */ 563 return -1; 564 } 565 } 566 567 return 0; 568 } 569 570 static int asus_start_multitouch(struct hid_device *hdev) 571 { 572 int ret; 573 const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 }; 574 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL); 575 576 if (!dmabuf) { 577 ret = -ENOMEM; 578 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret); 579 return ret; 580 } 581 582 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf), 583 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 584 585 kfree(dmabuf); 586 587 if (ret != sizeof(buf)) { 588 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret); 589 return ret; 590 } 591 592 return 0; 593 } 594 595 static int __maybe_unused asus_reset_resume(struct hid_device *hdev) 596 { 597 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 598 599 if (drvdata->tp) 600 return asus_start_multitouch(hdev); 601 602 return 0; 603 } 604 605 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id) 606 { 607 int ret; 608 struct asus_drvdata *drvdata; 609 610 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL); 611 if (drvdata == NULL) { 612 hid_err(hdev, "Can't alloc Asus descriptor\n"); 613 return -ENOMEM; 614 } 615 616 hid_set_drvdata(hdev, drvdata); 617 618 drvdata->quirks = id->driver_data; 619 620 if (drvdata->quirks & QUIRK_IS_MULTITOUCH) 621 drvdata->tp = &asus_i2c_tp; 622 623 if (drvdata->quirks & QUIRK_T100_KEYBOARD) { 624 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 625 626 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) { 627 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING; 628 /* 629 * The T100HA uses the same USB-ids as the T100TAF and 630 * the T200TA uses the same USB-ids as the T100TA, while 631 * both have different max x/y values as the T100TA[F]. 632 */ 633 if (dmi_match(DMI_PRODUCT_NAME, "T100HAN")) 634 drvdata->tp = &asus_t100ha_tp; 635 else if (dmi_match(DMI_PRODUCT_NAME, "T200TA")) 636 drvdata->tp = &asus_t200ta_tp; 637 else 638 drvdata->tp = &asus_t100ta_tp; 639 } 640 } 641 642 if (drvdata->quirks & QUIRK_T100CHI) { 643 /* 644 * All functionality is on a single HID interface and for 645 * userspace the touchpad must be a separate input_dev. 646 */ 647 hdev->quirks |= HID_QUIRK_MULTI_INPUT | 648 HID_QUIRK_NO_EMPTY_INPUT; 649 drvdata->tp = &asus_t100chi_tp; 650 } 651 652 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS) 653 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 654 655 ret = hid_parse(hdev); 656 if (ret) { 657 hid_err(hdev, "Asus hid parse failed: %d\n", ret); 658 return ret; 659 } 660 661 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 662 if (ret) { 663 hid_err(hdev, "Asus hw start failed: %d\n", ret); 664 return ret; 665 } 666 667 if (!drvdata->input) { 668 hid_err(hdev, "Asus input not registered\n"); 669 ret = -ENOMEM; 670 goto err_stop_hw; 671 } 672 673 if (drvdata->tp) { 674 drvdata->input->name = "Asus TouchPad"; 675 } else { 676 drvdata->input->name = "Asus Keyboard"; 677 } 678 679 if (drvdata->tp) { 680 ret = asus_start_multitouch(hdev); 681 if (ret) 682 goto err_stop_hw; 683 } 684 685 return 0; 686 err_stop_hw: 687 hid_hw_stop(hdev); 688 return ret; 689 } 690 691 static void asus_remove(struct hid_device *hdev) 692 { 693 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 694 695 if (drvdata->kbd_backlight) { 696 drvdata->kbd_backlight->removed = true; 697 cancel_work_sync(&drvdata->kbd_backlight->work); 698 } 699 700 hid_hw_stop(hdev); 701 } 702 703 static const __u8 asus_g752_fixed_rdesc[] = { 704 0x19, 0x00, /* Usage Minimum (0x00) */ 705 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */ 706 }; 707 708 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc, 709 unsigned int *rsize) 710 { 711 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 712 713 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT && 714 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) { 715 hid_info(hdev, "Fixing up Asus notebook report descriptor\n"); 716 rdesc[55] = 0xdd; 717 } 718 /* For the T100TA/T200TA keyboard dock */ 719 if (drvdata->quirks & QUIRK_T100_KEYBOARD && 720 (*rsize == 76 || *rsize == 101) && 721 rdesc[73] == 0x81 && rdesc[74] == 0x01) { 722 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n"); 723 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT; 724 } 725 /* For the T100CHI keyboard dock */ 726 if (drvdata->quirks & QUIRK_T100CHI && 727 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) { 728 /* 729 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum 730 * (FFh) and clear the flags in the Input() byte. 731 * Note the descriptor has a bogus 0 byte at the end so we 732 * only need 1 extra byte. 733 */ 734 *rsize = 404; 735 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL); 736 if (!rdesc) 737 return NULL; 738 739 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n"); 740 memmove(rdesc + 392, rdesc + 390, 12); 741 rdesc[388] = 0x19; 742 rdesc[389] = 0x00; 743 rdesc[390] = 0x29; 744 rdesc[391] = 0xff; 745 rdesc[402] = 0x00; 746 } 747 if (drvdata->quirks & QUIRK_G752_KEYBOARD && 748 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) { 749 /* report is missing usage mninum and maximum */ 750 __u8 *new_rdesc; 751 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc); 752 753 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL); 754 if (new_rdesc == NULL) 755 return rdesc; 756 757 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n"); 758 /* copy the valid part */ 759 memcpy(new_rdesc, rdesc, 61); 760 /* insert missing part */ 761 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc)); 762 /* copy remaining data */ 763 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61); 764 765 *rsize = new_size; 766 rdesc = new_rdesc; 767 } 768 769 return rdesc; 770 } 771 772 static const struct hid_device_id asus_devices[] = { 773 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 774 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS}, 775 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 776 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS }, 777 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 778 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT }, 779 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 780 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT }, 781 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 782 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD }, 783 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 784 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD), 785 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 786 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 787 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD), 788 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 789 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) }, 790 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) }, 791 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) }, 792 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 793 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI }, 794 795 { } 796 }; 797 MODULE_DEVICE_TABLE(hid, asus_devices); 798 799 static struct hid_driver asus_driver = { 800 .name = "asus", 801 .id_table = asus_devices, 802 .report_fixup = asus_report_fixup, 803 .probe = asus_probe, 804 .remove = asus_remove, 805 .input_mapping = asus_input_mapping, 806 .input_configured = asus_input_configured, 807 #ifdef CONFIG_PM 808 .reset_resume = asus_reset_resume, 809 #endif 810 .raw_event = asus_raw_event 811 }; 812 module_hid_driver(asus_driver); 813 814 MODULE_LICENSE("GPL"); 815