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 36 #include "hid-ids.h" 37 38 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>"); 39 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>"); 40 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>"); 41 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>"); 42 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad"); 43 44 #define T100_TPAD_INTF 2 45 46 #define T100CHI_MOUSE_REPORT_ID 0x06 47 #define FEATURE_REPORT_ID 0x0d 48 #define INPUT_REPORT_ID 0x5d 49 #define FEATURE_KBD_REPORT_ID 0x5a 50 #define FEATURE_KBD_REPORT_SIZE 16 51 52 #define SUPPORT_KBD_BACKLIGHT BIT(0) 53 54 #define MAX_TOUCH_MAJOR 8 55 #define MAX_PRESSURE 128 56 57 #define BTN_LEFT_MASK 0x01 58 #define CONTACT_TOOL_TYPE_MASK 0x80 59 #define CONTACT_X_MSB_MASK 0xf0 60 #define CONTACT_Y_MSB_MASK 0x0f 61 #define CONTACT_TOUCH_MAJOR_MASK 0x07 62 #define CONTACT_PRESSURE_MASK 0x7f 63 64 #define QUIRK_FIX_NOTEBOOK_REPORT BIT(0) 65 #define QUIRK_NO_INIT_REPORTS BIT(1) 66 #define QUIRK_SKIP_INPUT_MAPPING BIT(2) 67 #define QUIRK_IS_MULTITOUCH BIT(3) 68 #define QUIRK_NO_CONSUMER_USAGES BIT(4) 69 #define QUIRK_USE_KBD_BACKLIGHT BIT(5) 70 #define QUIRK_T100_KEYBOARD BIT(6) 71 #define QUIRK_T100CHI BIT(7) 72 #define QUIRK_G752_KEYBOARD BIT(8) 73 #define QUIRK_T101HA_DOCK BIT(9) 74 75 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \ 76 QUIRK_NO_INIT_REPORTS | \ 77 QUIRK_NO_CONSUMER_USAGES) 78 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \ 79 QUIRK_SKIP_INPUT_MAPPING | \ 80 QUIRK_IS_MULTITOUCH) 81 82 #define TRKID_SGN ((TRKID_MAX + 1) >> 1) 83 84 struct asus_kbd_leds { 85 struct led_classdev cdev; 86 struct hid_device *hdev; 87 struct work_struct work; 88 unsigned int brightness; 89 bool removed; 90 }; 91 92 struct asus_touchpad_info { 93 int max_x; 94 int max_y; 95 int res_x; 96 int res_y; 97 int contact_size; 98 int max_contacts; 99 }; 100 101 struct asus_drvdata { 102 unsigned long quirks; 103 struct input_dev *input; 104 struct asus_kbd_leds *kbd_backlight; 105 const struct asus_touchpad_info *tp; 106 bool enable_backlight; 107 }; 108 109 static const struct asus_touchpad_info asus_i2c_tp = { 110 .max_x = 2794, 111 .max_y = 1758, 112 .contact_size = 5, 113 .max_contacts = 5, 114 }; 115 116 static const struct asus_touchpad_info asus_t100ta_tp = { 117 .max_x = 2240, 118 .max_y = 1120, 119 .res_x = 30, /* units/mm */ 120 .res_y = 27, /* units/mm */ 121 .contact_size = 5, 122 .max_contacts = 5, 123 }; 124 125 static const struct asus_touchpad_info asus_t100ha_tp = { 126 .max_x = 2640, 127 .max_y = 1320, 128 .res_x = 30, /* units/mm */ 129 .res_y = 29, /* units/mm */ 130 .contact_size = 5, 131 .max_contacts = 5, 132 }; 133 134 static const struct asus_touchpad_info asus_t200ta_tp = { 135 .max_x = 3120, 136 .max_y = 1716, 137 .res_x = 30, /* units/mm */ 138 .res_y = 28, /* units/mm */ 139 .contact_size = 5, 140 .max_contacts = 5, 141 }; 142 143 static const struct asus_touchpad_info asus_t100chi_tp = { 144 .max_x = 2640, 145 .max_y = 1320, 146 .res_x = 31, /* units/mm */ 147 .res_y = 29, /* units/mm */ 148 .contact_size = 3, 149 .max_contacts = 4, 150 }; 151 152 static void asus_report_contact_down(struct asus_drvdata *drvdat, 153 int toolType, u8 *data) 154 { 155 struct input_dev *input = drvdat->input; 156 int touch_major, pressure, x, y; 157 158 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1]; 159 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]); 160 161 input_report_abs(input, ABS_MT_POSITION_X, x); 162 input_report_abs(input, ABS_MT_POSITION_Y, y); 163 164 if (drvdat->tp->contact_size < 5) 165 return; 166 167 if (toolType == MT_TOOL_PALM) { 168 touch_major = MAX_TOUCH_MAJOR; 169 pressure = MAX_PRESSURE; 170 } else { 171 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK; 172 pressure = data[4] & CONTACT_PRESSURE_MASK; 173 } 174 175 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major); 176 input_report_abs(input, ABS_MT_PRESSURE, pressure); 177 } 178 179 /* Required for Synaptics Palm Detection */ 180 static void asus_report_tool_width(struct asus_drvdata *drvdat) 181 { 182 struct input_mt *mt = drvdat->input->mt; 183 struct input_mt_slot *oldest; 184 int oldid, count, i; 185 186 if (drvdat->tp->contact_size < 5) 187 return; 188 189 oldest = NULL; 190 oldid = mt->trkid; 191 count = 0; 192 193 for (i = 0; i < mt->num_slots; ++i) { 194 struct input_mt_slot *ps = &mt->slots[i]; 195 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); 196 197 if (id < 0) 198 continue; 199 if ((id - oldid) & TRKID_SGN) { 200 oldest = ps; 201 oldid = id; 202 } 203 count++; 204 } 205 206 if (oldest) { 207 input_report_abs(drvdat->input, ABS_TOOL_WIDTH, 208 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR)); 209 } 210 } 211 212 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size) 213 { 214 int i, toolType = MT_TOOL_FINGER; 215 u8 *contactData = data + 2; 216 217 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts) 218 return 0; 219 220 for (i = 0; i < drvdat->tp->max_contacts; i++) { 221 bool down = !!(data[1] & BIT(i+3)); 222 223 if (drvdat->tp->contact_size >= 5) 224 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ? 225 MT_TOOL_PALM : MT_TOOL_FINGER; 226 227 input_mt_slot(drvdat->input, i); 228 input_mt_report_slot_state(drvdat->input, toolType, down); 229 230 if (down) { 231 asus_report_contact_down(drvdat, toolType, contactData); 232 contactData += drvdat->tp->contact_size; 233 } 234 } 235 236 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK); 237 asus_report_tool_width(drvdat); 238 239 input_mt_sync_frame(drvdat->input); 240 input_sync(drvdat->input); 241 242 return 1; 243 } 244 245 static int asus_event(struct hid_device *hdev, struct hid_field *field, 246 struct hid_usage *usage, __s32 value) 247 { 248 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 && 249 (usage->hid & HID_USAGE) != 0x00 && !usage->type) { 250 hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n", 251 usage->hid & HID_USAGE); 252 } 253 254 return 0; 255 } 256 257 static int asus_raw_event(struct hid_device *hdev, 258 struct hid_report *report, u8 *data, int size) 259 { 260 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 261 262 if (drvdata->tp && data[0] == INPUT_REPORT_ID) 263 return asus_report_input(drvdata, data, size); 264 265 return 0; 266 } 267 268 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size) 269 { 270 unsigned char *dmabuf; 271 int ret; 272 273 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL); 274 if (!dmabuf) 275 return -ENOMEM; 276 277 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf, 278 buf_size, HID_FEATURE_REPORT, 279 HID_REQ_SET_REPORT); 280 kfree(dmabuf); 281 282 return ret; 283 } 284 285 static int asus_kbd_init(struct hid_device *hdev) 286 { 287 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54, 288 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 }; 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 init command: %d\n", ret); 294 295 return ret; 296 } 297 298 static int asus_kbd_get_functions(struct hid_device *hdev, 299 unsigned char *kbd_func) 300 { 301 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 }; 302 u8 *readbuf; 303 int ret; 304 305 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 306 if (ret < 0) { 307 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret); 308 return ret; 309 } 310 311 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL); 312 if (!readbuf) 313 return -ENOMEM; 314 315 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf, 316 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT, 317 HID_REQ_GET_REPORT); 318 if (ret < 0) { 319 hid_err(hdev, "Asus failed to request functions: %d\n", ret); 320 kfree(readbuf); 321 return ret; 322 } 323 324 *kbd_func = readbuf[6]; 325 326 kfree(readbuf); 327 return ret; 328 } 329 330 static void asus_kbd_backlight_set(struct led_classdev *led_cdev, 331 enum led_brightness brightness) 332 { 333 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 334 cdev); 335 if (led->brightness == brightness) 336 return; 337 338 led->brightness = brightness; 339 schedule_work(&led->work); 340 } 341 342 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev) 343 { 344 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 345 cdev); 346 347 return led->brightness; 348 } 349 350 static void asus_kbd_backlight_work(struct work_struct *work) 351 { 352 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work); 353 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 }; 354 int ret; 355 356 if (led->removed) 357 return; 358 359 buf[4] = led->brightness; 360 361 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf)); 362 if (ret < 0) 363 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret); 364 } 365 366 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes 367 * precedence. We only activate HID-based backlight control when the 368 * WMI control is not available. 369 */ 370 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev) 371 { 372 u32 value; 373 int ret; 374 375 if (!IS_ENABLED(CONFIG_ASUS_WMI)) 376 return false; 377 378 ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 379 ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value); 380 hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value); 381 if (ret) 382 return false; 383 384 return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT); 385 } 386 387 static int asus_kbd_register_leds(struct hid_device *hdev) 388 { 389 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 390 unsigned char kbd_func; 391 int ret; 392 393 /* Initialize keyboard */ 394 ret = asus_kbd_init(hdev); 395 if (ret < 0) 396 return ret; 397 398 /* Get keyboard functions */ 399 ret = asus_kbd_get_functions(hdev, &kbd_func); 400 if (ret < 0) 401 return ret; 402 403 /* Check for backlight support */ 404 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT)) 405 return -ENODEV; 406 407 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev, 408 sizeof(struct asus_kbd_leds), 409 GFP_KERNEL); 410 if (!drvdata->kbd_backlight) 411 return -ENOMEM; 412 413 drvdata->kbd_backlight->removed = false; 414 drvdata->kbd_backlight->brightness = 0; 415 drvdata->kbd_backlight->hdev = hdev; 416 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight"; 417 drvdata->kbd_backlight->cdev.max_brightness = 3; 418 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set; 419 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get; 420 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work); 421 422 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev); 423 if (ret < 0) { 424 /* No need to have this still around */ 425 devm_kfree(&hdev->dev, drvdata->kbd_backlight); 426 } 427 428 return ret; 429 } 430 431 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) 432 { 433 struct input_dev *input = hi->input; 434 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 435 436 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */ 437 if (drvdata->quirks & QUIRK_T100CHI && 438 hi->report->id != T100CHI_MOUSE_REPORT_ID) 439 return 0; 440 441 if (drvdata->tp) { 442 int ret; 443 444 input_set_abs_params(input, ABS_MT_POSITION_X, 0, 445 drvdata->tp->max_x, 0, 0); 446 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 447 drvdata->tp->max_y, 0, 0); 448 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x); 449 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y); 450 451 if (drvdata->tp->contact_size >= 5) { 452 input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 453 MAX_TOUCH_MAJOR, 0, 0); 454 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 455 MAX_TOUCH_MAJOR, 0, 0); 456 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 457 MAX_PRESSURE, 0, 0); 458 } 459 460 __set_bit(BTN_LEFT, input->keybit); 461 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 462 463 ret = input_mt_init_slots(input, drvdata->tp->max_contacts, 464 INPUT_MT_POINTER); 465 466 if (ret) { 467 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret); 468 return ret; 469 } 470 } 471 472 drvdata->input = input; 473 474 if (drvdata->enable_backlight && 475 !asus_kbd_wmi_led_control_present(hdev) && 476 asus_kbd_register_leds(hdev)) 477 hid_warn(hdev, "Failed to initialize backlight.\n"); 478 479 return 0; 480 } 481 482 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 483 max, EV_KEY, (c)) 484 static int asus_input_mapping(struct hid_device *hdev, 485 struct hid_input *hi, struct hid_field *field, 486 struct hid_usage *usage, unsigned long **bit, 487 int *max) 488 { 489 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 490 491 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) { 492 /* Don't map anything from the HID report. 493 * We do it all manually in asus_input_configured 494 */ 495 return -1; 496 } 497 498 /* 499 * Ignore a bunch of bogus collections in the T100CHI descriptor. 500 * This avoids a bunch of non-functional hid_input devices getting 501 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT. 502 */ 503 if (drvdata->quirks & QUIRK_T100CHI) { 504 if (field->application == (HID_UP_GENDESK | 0x0080) || 505 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) || 506 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) || 507 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)) 508 return -1; 509 /* 510 * We use the hid_input for the mouse report for the touchpad, 511 * keep the left button, to avoid the core removing it. 512 */ 513 if (field->application == HID_GD_MOUSE && 514 usage->hid != (HID_UP_BUTTON | 1)) 515 return -1; 516 } 517 518 /* ASUS-specific keyboard hotkeys */ 519 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) { 520 set_bit(EV_REP, hi->input->evbit); 521 switch (usage->hid & HID_USAGE) { 522 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 523 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 524 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break; 525 case 0x6c: asus_map_key_clear(KEY_SLEEP); break; 526 case 0x7c: asus_map_key_clear(KEY_MICMUTE); break; 527 case 0x82: asus_map_key_clear(KEY_CAMERA); break; 528 case 0x88: asus_map_key_clear(KEY_RFKILL); break; 529 case 0xb5: asus_map_key_clear(KEY_CALC); break; 530 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break; 531 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break; 532 533 /* ASUS touchpad toggle */ 534 case 0x6b: asus_map_key_clear(KEY_F21); break; 535 536 /* ROG key */ 537 case 0x38: asus_map_key_clear(KEY_PROG1); break; 538 539 /* Fn+C ASUS Splendid */ 540 case 0xba: asus_map_key_clear(KEY_PROG2); break; 541 542 /* Fn+Space Power4Gear Hybrid */ 543 case 0x5c: asus_map_key_clear(KEY_PROG3); break; 544 545 /* Fn+F5 "fan" symbol on FX503VD */ 546 case 0x99: asus_map_key_clear(KEY_PROG4); break; 547 548 default: 549 /* ASUS lazily declares 256 usages, ignore the rest, 550 * as some make the keyboard appear as a pointer device. */ 551 return -1; 552 } 553 554 /* 555 * Check and enable backlight only on devices with UsagePage == 556 * 0xff31 to avoid initializing the keyboard firmware multiple 557 * times on devices with multiple HID descriptors but same 558 * PID/VID. 559 */ 560 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) 561 drvdata->enable_backlight = true; 562 563 return 1; 564 } 565 566 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) { 567 set_bit(EV_REP, hi->input->evbit); 568 switch (usage->hid & HID_USAGE) { 569 case 0xff01: asus_map_key_clear(BTN_1); break; 570 case 0xff02: asus_map_key_clear(BTN_2); break; 571 case 0xff03: asus_map_key_clear(BTN_3); break; 572 case 0xff04: asus_map_key_clear(BTN_4); break; 573 case 0xff05: asus_map_key_clear(BTN_5); break; 574 case 0xff06: asus_map_key_clear(BTN_6); break; 575 case 0xff07: asus_map_key_clear(BTN_7); break; 576 case 0xff08: asus_map_key_clear(BTN_8); break; 577 case 0xff09: asus_map_key_clear(BTN_9); break; 578 case 0xff0a: asus_map_key_clear(BTN_A); break; 579 case 0xff0b: asus_map_key_clear(BTN_B); break; 580 case 0x00f1: asus_map_key_clear(KEY_WLAN); break; 581 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 582 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 583 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break; 584 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break; 585 case 0x00f8: asus_map_key_clear(KEY_PROG1); break; 586 default: 587 return 0; 588 } 589 590 return 1; 591 } 592 593 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES && 594 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) { 595 switch (usage->hid & HID_USAGE) { 596 case 0xe2: /* Mute */ 597 case 0xe9: /* Volume up */ 598 case 0xea: /* Volume down */ 599 return 0; 600 default: 601 /* Ignore dummy Consumer usages which make the 602 * keyboard incorrectly appear as a pointer device. 603 */ 604 return -1; 605 } 606 } 607 608 return 0; 609 } 610 611 static int asus_start_multitouch(struct hid_device *hdev) 612 { 613 int ret; 614 static const unsigned char buf[] = { 615 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 616 }; 617 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL); 618 619 if (!dmabuf) { 620 ret = -ENOMEM; 621 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret); 622 return ret; 623 } 624 625 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf), 626 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 627 628 kfree(dmabuf); 629 630 if (ret != sizeof(buf)) { 631 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret); 632 return ret; 633 } 634 635 return 0; 636 } 637 638 static int __maybe_unused asus_reset_resume(struct hid_device *hdev) 639 { 640 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 641 642 if (drvdata->tp) 643 return asus_start_multitouch(hdev); 644 645 return 0; 646 } 647 648 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id) 649 { 650 int ret; 651 struct asus_drvdata *drvdata; 652 653 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL); 654 if (drvdata == NULL) { 655 hid_err(hdev, "Can't alloc Asus descriptor\n"); 656 return -ENOMEM; 657 } 658 659 hid_set_drvdata(hdev, drvdata); 660 661 drvdata->quirks = id->driver_data; 662 663 if (drvdata->quirks & QUIRK_IS_MULTITOUCH) 664 drvdata->tp = &asus_i2c_tp; 665 666 if (drvdata->quirks & QUIRK_T100_KEYBOARD) { 667 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 668 669 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) { 670 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING; 671 /* 672 * The T100HA uses the same USB-ids as the T100TAF and 673 * the T200TA uses the same USB-ids as the T100TA, while 674 * both have different max x/y values as the T100TA[F]. 675 */ 676 if (dmi_match(DMI_PRODUCT_NAME, "T100HAN")) 677 drvdata->tp = &asus_t100ha_tp; 678 else if (dmi_match(DMI_PRODUCT_NAME, "T200TA")) 679 drvdata->tp = &asus_t200ta_tp; 680 else 681 drvdata->tp = &asus_t100ta_tp; 682 } 683 } 684 685 if (drvdata->quirks & QUIRK_T100CHI) { 686 /* 687 * All functionality is on a single HID interface and for 688 * userspace the touchpad must be a separate input_dev. 689 */ 690 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 691 drvdata->tp = &asus_t100chi_tp; 692 } 693 694 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS) 695 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 696 697 ret = hid_parse(hdev); 698 if (ret) { 699 hid_err(hdev, "Asus hid parse failed: %d\n", ret); 700 return ret; 701 } 702 703 /* use hid-multitouch for T101HA touchpad */ 704 if (id->driver_data & QUIRK_T101HA_DOCK && 705 hdev->collection->usage == HID_GD_MOUSE) 706 return -ENODEV; 707 708 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 709 if (ret) { 710 hid_err(hdev, "Asus hw start failed: %d\n", ret); 711 return ret; 712 } 713 714 if (!drvdata->input) { 715 hid_err(hdev, "Asus input not registered\n"); 716 ret = -ENOMEM; 717 goto err_stop_hw; 718 } 719 720 if (drvdata->tp) { 721 drvdata->input->name = "Asus TouchPad"; 722 } else { 723 drvdata->input->name = "Asus Keyboard"; 724 } 725 726 if (drvdata->tp) { 727 ret = asus_start_multitouch(hdev); 728 if (ret) 729 goto err_stop_hw; 730 } 731 732 return 0; 733 err_stop_hw: 734 hid_hw_stop(hdev); 735 return ret; 736 } 737 738 static void asus_remove(struct hid_device *hdev) 739 { 740 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 741 742 if (drvdata->kbd_backlight) { 743 drvdata->kbd_backlight->removed = true; 744 cancel_work_sync(&drvdata->kbd_backlight->work); 745 } 746 747 hid_hw_stop(hdev); 748 } 749 750 static const __u8 asus_g752_fixed_rdesc[] = { 751 0x19, 0x00, /* Usage Minimum (0x00) */ 752 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */ 753 }; 754 755 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc, 756 unsigned int *rsize) 757 { 758 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 759 760 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT && 761 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) { 762 hid_info(hdev, "Fixing up Asus notebook report descriptor\n"); 763 rdesc[55] = 0xdd; 764 } 765 /* For the T100TA/T200TA keyboard dock */ 766 if (drvdata->quirks & QUIRK_T100_KEYBOARD && 767 (*rsize == 76 || *rsize == 101) && 768 rdesc[73] == 0x81 && rdesc[74] == 0x01) { 769 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n"); 770 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT; 771 } 772 /* For the T100CHI keyboard dock */ 773 if (drvdata->quirks & QUIRK_T100CHI && 774 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) { 775 /* 776 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum 777 * (FFh) and clear the flags in the Input() byte. 778 * Note the descriptor has a bogus 0 byte at the end so we 779 * only need 1 extra byte. 780 */ 781 *rsize = 404; 782 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL); 783 if (!rdesc) 784 return NULL; 785 786 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n"); 787 memmove(rdesc + 392, rdesc + 390, 12); 788 rdesc[388] = 0x19; 789 rdesc[389] = 0x00; 790 rdesc[390] = 0x29; 791 rdesc[391] = 0xff; 792 rdesc[402] = 0x00; 793 } 794 if (drvdata->quirks & QUIRK_G752_KEYBOARD && 795 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) { 796 /* report is missing usage mninum and maximum */ 797 __u8 *new_rdesc; 798 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc); 799 800 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL); 801 if (new_rdesc == NULL) 802 return rdesc; 803 804 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n"); 805 /* copy the valid part */ 806 memcpy(new_rdesc, rdesc, 61); 807 /* insert missing part */ 808 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc)); 809 /* copy remaining data */ 810 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61); 811 812 *rsize = new_size; 813 rdesc = new_rdesc; 814 } 815 816 return rdesc; 817 } 818 819 static const struct hid_device_id asus_devices[] = { 820 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 821 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS}, 822 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 823 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS }, 824 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 825 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT }, 826 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 827 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT }, 828 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 829 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD }, 830 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 831 USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD), 832 QUIRK_USE_KBD_BACKLIGHT }, 833 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 834 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD), 835 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 836 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 837 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD), 838 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 839 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 840 USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD), QUIRK_T101HA_DOCK }, 841 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) }, 842 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) }, 843 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) }, 844 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 845 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI }, 846 847 { } 848 }; 849 MODULE_DEVICE_TABLE(hid, asus_devices); 850 851 static struct hid_driver asus_driver = { 852 .name = "asus", 853 .id_table = asus_devices, 854 .report_fixup = asus_report_fixup, 855 .probe = asus_probe, 856 .remove = asus_remove, 857 .input_mapping = asus_input_mapping, 858 .input_configured = asus_input_configured, 859 #ifdef CONFIG_PM 860 .reset_resume = asus_reset_resume, 861 #endif 862 .event = asus_event, 863 .raw_event = asus_raw_event 864 }; 865 module_hid_driver(asus_driver); 866 867 MODULE_LICENSE("GPL"); 868