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/hid.h> 30 #include <linux/module.h> 31 #include <linux/input/mt.h> 32 #include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */ 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 QUIRK_FIX_NOTEBOOK_REPORT BIT(0) 63 #define QUIRK_NO_INIT_REPORTS BIT(1) 64 #define QUIRK_SKIP_INPUT_MAPPING BIT(2) 65 #define QUIRK_IS_MULTITOUCH BIT(3) 66 #define QUIRK_NO_CONSUMER_USAGES BIT(4) 67 #define QUIRK_USE_KBD_BACKLIGHT BIT(5) 68 #define QUIRK_T100_KEYBOARD BIT(6) 69 #define QUIRK_T100CHI BIT(7) 70 #define QUIRK_G752_KEYBOARD BIT(8) 71 72 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \ 73 QUIRK_NO_INIT_REPORTS | \ 74 QUIRK_NO_CONSUMER_USAGES) 75 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \ 76 QUIRK_SKIP_INPUT_MAPPING | \ 77 QUIRK_IS_MULTITOUCH) 78 79 #define TRKID_SGN ((TRKID_MAX + 1) >> 1) 80 81 struct asus_kbd_leds { 82 struct led_classdev cdev; 83 struct hid_device *hdev; 84 struct work_struct work; 85 unsigned int brightness; 86 bool removed; 87 }; 88 89 struct asus_touchpad_info { 90 int max_x; 91 int max_y; 92 int res_x; 93 int res_y; 94 int contact_size; 95 int max_contacts; 96 }; 97 98 struct asus_drvdata { 99 unsigned long quirks; 100 struct input_dev *input; 101 struct asus_kbd_leds *kbd_backlight; 102 const struct asus_touchpad_info *tp; 103 bool enable_backlight; 104 }; 105 106 static const struct asus_touchpad_info asus_i2c_tp = { 107 .max_x = 2794, 108 .max_y = 1758, 109 .contact_size = 5, 110 .max_contacts = 5, 111 }; 112 113 static const struct asus_touchpad_info asus_t100ta_tp = { 114 .max_x = 2240, 115 .max_y = 1120, 116 .res_x = 30, /* units/mm */ 117 .res_y = 27, /* units/mm */ 118 .contact_size = 5, 119 .max_contacts = 5, 120 }; 121 122 static const struct asus_touchpad_info asus_t100chi_tp = { 123 .max_x = 2640, 124 .max_y = 1320, 125 .res_x = 31, /* units/mm */ 126 .res_y = 29, /* units/mm */ 127 .contact_size = 3, 128 .max_contacts = 4, 129 }; 130 131 static void asus_report_contact_down(struct asus_drvdata *drvdat, 132 int toolType, u8 *data) 133 { 134 struct input_dev *input = drvdat->input; 135 int touch_major, pressure, x, y; 136 137 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1]; 138 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]); 139 140 input_report_abs(input, ABS_MT_POSITION_X, x); 141 input_report_abs(input, ABS_MT_POSITION_Y, y); 142 143 if (drvdat->tp->contact_size < 5) 144 return; 145 146 if (toolType == MT_TOOL_PALM) { 147 touch_major = MAX_TOUCH_MAJOR; 148 pressure = MAX_PRESSURE; 149 } else { 150 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK; 151 pressure = data[4] & CONTACT_PRESSURE_MASK; 152 } 153 154 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major); 155 input_report_abs(input, ABS_MT_PRESSURE, pressure); 156 } 157 158 /* Required for Synaptics Palm Detection */ 159 static void asus_report_tool_width(struct asus_drvdata *drvdat) 160 { 161 struct input_mt *mt = drvdat->input->mt; 162 struct input_mt_slot *oldest; 163 int oldid, count, i; 164 165 if (drvdat->tp->contact_size < 5) 166 return; 167 168 oldest = NULL; 169 oldid = mt->trkid; 170 count = 0; 171 172 for (i = 0; i < mt->num_slots; ++i) { 173 struct input_mt_slot *ps = &mt->slots[i]; 174 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); 175 176 if (id < 0) 177 continue; 178 if ((id - oldid) & TRKID_SGN) { 179 oldest = ps; 180 oldid = id; 181 } 182 count++; 183 } 184 185 if (oldest) { 186 input_report_abs(drvdat->input, ABS_TOOL_WIDTH, 187 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR)); 188 } 189 } 190 191 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size) 192 { 193 int i, toolType = MT_TOOL_FINGER; 194 u8 *contactData = data + 2; 195 196 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts) 197 return 0; 198 199 for (i = 0; i < drvdat->tp->max_contacts; i++) { 200 bool down = !!(data[1] & BIT(i+3)); 201 202 if (drvdat->tp->contact_size >= 5) 203 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ? 204 MT_TOOL_PALM : MT_TOOL_FINGER; 205 206 input_mt_slot(drvdat->input, i); 207 input_mt_report_slot_state(drvdat->input, toolType, down); 208 209 if (down) { 210 asus_report_contact_down(drvdat, toolType, contactData); 211 contactData += drvdat->tp->contact_size; 212 } 213 } 214 215 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK); 216 asus_report_tool_width(drvdat); 217 218 input_mt_sync_frame(drvdat->input); 219 input_sync(drvdat->input); 220 221 return 1; 222 } 223 224 static int asus_raw_event(struct hid_device *hdev, 225 struct hid_report *report, u8 *data, int size) 226 { 227 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 228 229 if (drvdata->tp && data[0] == INPUT_REPORT_ID) 230 return asus_report_input(drvdata, data, size); 231 232 return 0; 233 } 234 235 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size) 236 { 237 unsigned char *dmabuf; 238 int ret; 239 240 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL); 241 if (!dmabuf) 242 return -ENOMEM; 243 244 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf, 245 buf_size, HID_FEATURE_REPORT, 246 HID_REQ_SET_REPORT); 247 kfree(dmabuf); 248 249 return ret; 250 } 251 252 static int asus_kbd_init(struct hid_device *hdev) 253 { 254 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54, 255 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 }; 256 int ret; 257 258 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 259 if (ret < 0) 260 hid_err(hdev, "Asus failed to send init command: %d\n", ret); 261 262 return ret; 263 } 264 265 static int asus_kbd_get_functions(struct hid_device *hdev, 266 unsigned char *kbd_func) 267 { 268 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 }; 269 u8 *readbuf; 270 int ret; 271 272 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 273 if (ret < 0) { 274 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret); 275 return ret; 276 } 277 278 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL); 279 if (!readbuf) 280 return -ENOMEM; 281 282 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf, 283 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT, 284 HID_REQ_GET_REPORT); 285 if (ret < 0) { 286 hid_err(hdev, "Asus failed to request functions: %d\n", ret); 287 kfree(readbuf); 288 return ret; 289 } 290 291 *kbd_func = readbuf[6]; 292 293 kfree(readbuf); 294 return ret; 295 } 296 297 static void asus_kbd_backlight_set(struct led_classdev *led_cdev, 298 enum led_brightness brightness) 299 { 300 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 301 cdev); 302 if (led->brightness == brightness) 303 return; 304 305 led->brightness = brightness; 306 schedule_work(&led->work); 307 } 308 309 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev) 310 { 311 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 312 cdev); 313 314 return led->brightness; 315 } 316 317 static void asus_kbd_backlight_work(struct work_struct *work) 318 { 319 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work); 320 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 }; 321 int ret; 322 323 if (led->removed) 324 return; 325 326 buf[4] = led->brightness; 327 328 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf)); 329 if (ret < 0) 330 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret); 331 } 332 333 static int asus_kbd_register_leds(struct hid_device *hdev) 334 { 335 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 336 unsigned char kbd_func; 337 int ret; 338 339 /* Initialize keyboard */ 340 ret = asus_kbd_init(hdev); 341 if (ret < 0) 342 return ret; 343 344 /* Get keyboard functions */ 345 ret = asus_kbd_get_functions(hdev, &kbd_func); 346 if (ret < 0) 347 return ret; 348 349 /* Check for backlight support */ 350 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT)) 351 return -ENODEV; 352 353 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev, 354 sizeof(struct asus_kbd_leds), 355 GFP_KERNEL); 356 if (!drvdata->kbd_backlight) 357 return -ENOMEM; 358 359 drvdata->kbd_backlight->removed = false; 360 drvdata->kbd_backlight->brightness = 0; 361 drvdata->kbd_backlight->hdev = hdev; 362 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight"; 363 drvdata->kbd_backlight->cdev.max_brightness = 3; 364 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set; 365 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get; 366 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work); 367 368 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev); 369 if (ret < 0) { 370 /* No need to have this still around */ 371 devm_kfree(&hdev->dev, drvdata->kbd_backlight); 372 } 373 374 return ret; 375 } 376 377 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) 378 { 379 struct input_dev *input = hi->input; 380 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 381 382 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */ 383 if (drvdata->quirks & QUIRK_T100CHI && 384 hi->report->id != T100CHI_MOUSE_REPORT_ID) 385 return 0; 386 387 if (drvdata->tp) { 388 int ret; 389 390 input_set_abs_params(input, ABS_MT_POSITION_X, 0, 391 drvdata->tp->max_x, 0, 0); 392 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 393 drvdata->tp->max_y, 0, 0); 394 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x); 395 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y); 396 397 if (drvdata->tp->contact_size >= 5) { 398 input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 399 MAX_TOUCH_MAJOR, 0, 0); 400 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 401 MAX_TOUCH_MAJOR, 0, 0); 402 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 403 MAX_PRESSURE, 0, 0); 404 } 405 406 __set_bit(BTN_LEFT, input->keybit); 407 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 408 409 ret = input_mt_init_slots(input, drvdata->tp->max_contacts, 410 INPUT_MT_POINTER); 411 412 if (ret) { 413 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret); 414 return ret; 415 } 416 } 417 418 drvdata->input = input; 419 420 if (drvdata->enable_backlight && asus_kbd_register_leds(hdev)) 421 hid_warn(hdev, "Failed to initialize backlight.\n"); 422 423 return 0; 424 } 425 426 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 427 max, EV_KEY, (c)) 428 static int asus_input_mapping(struct hid_device *hdev, 429 struct hid_input *hi, struct hid_field *field, 430 struct hid_usage *usage, unsigned long **bit, 431 int *max) 432 { 433 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 434 435 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) { 436 /* Don't map anything from the HID report. 437 * We do it all manually in asus_input_configured 438 */ 439 return -1; 440 } 441 442 /* 443 * Ignore a bunch of bogus collections in the T100CHI descriptor. 444 * This avoids a bunch of non-functional hid_input devices getting 445 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT. 446 */ 447 if (drvdata->quirks & QUIRK_T100CHI) { 448 if (field->application == (HID_UP_GENDESK | 0x0080) || 449 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) || 450 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) || 451 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)) 452 return -1; 453 /* 454 * We use the hid_input for the mouse report for the touchpad, 455 * keep the left button, to avoid the core removing it. 456 */ 457 if (field->application == HID_GD_MOUSE && 458 usage->hid != (HID_UP_BUTTON | 1)) 459 return -1; 460 } 461 462 /* ASUS-specific keyboard hotkeys */ 463 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) { 464 set_bit(EV_REP, hi->input->evbit); 465 switch (usage->hid & HID_USAGE) { 466 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 467 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 468 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break; 469 case 0x6c: asus_map_key_clear(KEY_SLEEP); break; 470 case 0x82: asus_map_key_clear(KEY_CAMERA); break; 471 case 0x88: asus_map_key_clear(KEY_RFKILL); break; 472 case 0xb5: asus_map_key_clear(KEY_CALC); break; 473 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break; 474 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break; 475 476 /* ASUS touchpad toggle */ 477 case 0x6b: asus_map_key_clear(KEY_F21); break; 478 479 /* ROG key */ 480 case 0x38: asus_map_key_clear(KEY_PROG1); break; 481 482 /* Fn+C ASUS Splendid */ 483 case 0xba: asus_map_key_clear(KEY_PROG2); break; 484 485 /* Fn+Space Power4Gear Hybrid */ 486 case 0x5c: asus_map_key_clear(KEY_PROG3); break; 487 488 default: 489 /* ASUS lazily declares 256 usages, ignore the rest, 490 * as some make the keyboard appear as a pointer device. */ 491 return -1; 492 } 493 494 /* 495 * Check and enable backlight only on devices with UsagePage == 496 * 0xff31 to avoid initializing the keyboard firmware multiple 497 * times on devices with multiple HID descriptors but same 498 * PID/VID. 499 */ 500 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) 501 drvdata->enable_backlight = true; 502 503 return 1; 504 } 505 506 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) { 507 set_bit(EV_REP, hi->input->evbit); 508 switch (usage->hid & HID_USAGE) { 509 case 0xff01: asus_map_key_clear(BTN_1); break; 510 case 0xff02: asus_map_key_clear(BTN_2); break; 511 case 0xff03: asus_map_key_clear(BTN_3); break; 512 case 0xff04: asus_map_key_clear(BTN_4); break; 513 case 0xff05: asus_map_key_clear(BTN_5); break; 514 case 0xff06: asus_map_key_clear(BTN_6); break; 515 case 0xff07: asus_map_key_clear(BTN_7); break; 516 case 0xff08: asus_map_key_clear(BTN_8); break; 517 case 0xff09: asus_map_key_clear(BTN_9); break; 518 case 0xff0a: asus_map_key_clear(BTN_A); break; 519 case 0xff0b: asus_map_key_clear(BTN_B); break; 520 case 0x00f1: asus_map_key_clear(KEY_WLAN); break; 521 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 522 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 523 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break; 524 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break; 525 case 0x00f8: asus_map_key_clear(KEY_PROG1); break; 526 default: 527 return 0; 528 } 529 530 return 1; 531 } 532 533 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES && 534 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) { 535 switch (usage->hid & HID_USAGE) { 536 case 0xe2: /* Mute */ 537 case 0xe9: /* Volume up */ 538 case 0xea: /* Volume down */ 539 return 0; 540 default: 541 /* Ignore dummy Consumer usages which make the 542 * keyboard incorrectly appear as a pointer device. 543 */ 544 return -1; 545 } 546 } 547 548 return 0; 549 } 550 551 static int asus_start_multitouch(struct hid_device *hdev) 552 { 553 int ret; 554 const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 }; 555 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL); 556 557 if (!dmabuf) { 558 ret = -ENOMEM; 559 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret); 560 return ret; 561 } 562 563 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf), 564 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 565 566 kfree(dmabuf); 567 568 if (ret != sizeof(buf)) { 569 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret); 570 return ret; 571 } 572 573 return 0; 574 } 575 576 static int __maybe_unused asus_reset_resume(struct hid_device *hdev) 577 { 578 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 579 580 if (drvdata->tp) 581 return asus_start_multitouch(hdev); 582 583 return 0; 584 } 585 586 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id) 587 { 588 int ret; 589 struct asus_drvdata *drvdata; 590 591 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL); 592 if (drvdata == NULL) { 593 hid_err(hdev, "Can't alloc Asus descriptor\n"); 594 return -ENOMEM; 595 } 596 597 hid_set_drvdata(hdev, drvdata); 598 599 drvdata->quirks = id->driver_data; 600 601 if (drvdata->quirks & QUIRK_IS_MULTITOUCH) 602 drvdata->tp = &asus_i2c_tp; 603 604 if (drvdata->quirks & QUIRK_T100_KEYBOARD) { 605 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 606 607 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) { 608 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING; 609 drvdata->tp = &asus_t100ta_tp; 610 } 611 } 612 613 if (drvdata->quirks & QUIRK_T100CHI) { 614 /* 615 * All functionality is on a single HID interface and for 616 * userspace the touchpad must be a separate input_dev. 617 */ 618 hdev->quirks |= HID_QUIRK_MULTI_INPUT | 619 HID_QUIRK_NO_EMPTY_INPUT; 620 drvdata->tp = &asus_t100chi_tp; 621 } 622 623 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS) 624 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 625 626 ret = hid_parse(hdev); 627 if (ret) { 628 hid_err(hdev, "Asus hid parse failed: %d\n", ret); 629 return ret; 630 } 631 632 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 633 if (ret) { 634 hid_err(hdev, "Asus hw start failed: %d\n", ret); 635 return ret; 636 } 637 638 if (!drvdata->input) { 639 hid_err(hdev, "Asus input not registered\n"); 640 ret = -ENOMEM; 641 goto err_stop_hw; 642 } 643 644 if (drvdata->tp) { 645 drvdata->input->name = "Asus TouchPad"; 646 } else { 647 drvdata->input->name = "Asus Keyboard"; 648 } 649 650 if (drvdata->tp) { 651 ret = asus_start_multitouch(hdev); 652 if (ret) 653 goto err_stop_hw; 654 } 655 656 return 0; 657 err_stop_hw: 658 hid_hw_stop(hdev); 659 return ret; 660 } 661 662 static void asus_remove(struct hid_device *hdev) 663 { 664 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 665 666 if (drvdata->kbd_backlight) { 667 drvdata->kbd_backlight->removed = true; 668 cancel_work_sync(&drvdata->kbd_backlight->work); 669 } 670 671 hid_hw_stop(hdev); 672 } 673 674 static const __u8 asus_g752_fixed_rdesc[] = { 675 0x19, 0x00, /* Usage Minimum (0x00) */ 676 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */ 677 }; 678 679 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc, 680 unsigned int *rsize) 681 { 682 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 683 684 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT && 685 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) { 686 hid_info(hdev, "Fixing up Asus notebook report descriptor\n"); 687 rdesc[55] = 0xdd; 688 } 689 /* For the T100TA keyboard dock */ 690 if (drvdata->quirks & QUIRK_T100_KEYBOARD && 691 *rsize == 76 && rdesc[73] == 0x81 && rdesc[74] == 0x01) { 692 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n"); 693 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT; 694 } 695 /* For the T100CHI keyboard dock */ 696 if (drvdata->quirks & QUIRK_T100CHI && 697 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) { 698 /* 699 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum 700 * (FFh) and clear the flags in the Input() byte. 701 * Note the descriptor has a bogus 0 byte at the end so we 702 * only need 1 extra byte. 703 */ 704 *rsize = 404; 705 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL); 706 if (!rdesc) 707 return NULL; 708 709 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n"); 710 memmove(rdesc + 392, rdesc + 390, 12); 711 rdesc[388] = 0x19; 712 rdesc[389] = 0x00; 713 rdesc[390] = 0x29; 714 rdesc[391] = 0xff; 715 rdesc[402] = 0x00; 716 } 717 if (drvdata->quirks & QUIRK_G752_KEYBOARD && 718 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) { 719 /* report is missing usage mninum and maximum */ 720 __u8 *new_rdesc; 721 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc); 722 723 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL); 724 if (new_rdesc == NULL) 725 return rdesc; 726 727 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n"); 728 /* copy the valid part */ 729 memcpy(new_rdesc, rdesc, 61); 730 /* insert missing part */ 731 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc)); 732 /* copy remaining data */ 733 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61); 734 735 *rsize = new_size; 736 rdesc = new_rdesc; 737 } 738 739 return rdesc; 740 } 741 742 static const struct hid_device_id asus_devices[] = { 743 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 744 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS}, 745 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 746 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS }, 747 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 748 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT }, 749 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 750 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT }, 751 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 752 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD }, 753 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 754 USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD), 755 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 756 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) }, 757 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) }, 758 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) }, 759 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 760 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI }, 761 762 { } 763 }; 764 MODULE_DEVICE_TABLE(hid, asus_devices); 765 766 static struct hid_driver asus_driver = { 767 .name = "asus", 768 .id_table = asus_devices, 769 .report_fixup = asus_report_fixup, 770 .probe = asus_probe, 771 .remove = asus_remove, 772 .input_mapping = asus_input_mapping, 773 .input_configured = asus_input_configured, 774 #ifdef CONFIG_PM 775 .reset_resume = asus_reset_resume, 776 #endif 777 .raw_event = asus_raw_event 778 }; 779 module_hid_driver(asus_driver); 780 781 MODULE_LICENSE("GPL"); 782