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 74 #define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \ 75 QUIRK_NO_INIT_REPORTS | \ 76 QUIRK_NO_CONSUMER_USAGES) 77 #define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \ 78 QUIRK_SKIP_INPUT_MAPPING | \ 79 QUIRK_IS_MULTITOUCH) 80 81 #define TRKID_SGN ((TRKID_MAX + 1) >> 1) 82 83 struct asus_kbd_leds { 84 struct led_classdev cdev; 85 struct hid_device *hdev; 86 struct work_struct work; 87 unsigned int brightness; 88 bool removed; 89 }; 90 91 struct asus_touchpad_info { 92 int max_x; 93 int max_y; 94 int res_x; 95 int res_y; 96 int contact_size; 97 int max_contacts; 98 }; 99 100 struct asus_drvdata { 101 unsigned long quirks; 102 struct input_dev *input; 103 struct asus_kbd_leds *kbd_backlight; 104 const struct asus_touchpad_info *tp; 105 bool enable_backlight; 106 }; 107 108 static const struct asus_touchpad_info asus_i2c_tp = { 109 .max_x = 2794, 110 .max_y = 1758, 111 .contact_size = 5, 112 .max_contacts = 5, 113 }; 114 115 static const struct asus_touchpad_info asus_t100ta_tp = { 116 .max_x = 2240, 117 .max_y = 1120, 118 .res_x = 30, /* units/mm */ 119 .res_y = 27, /* units/mm */ 120 .contact_size = 5, 121 .max_contacts = 5, 122 }; 123 124 static const struct asus_touchpad_info asus_t100ha_tp = { 125 .max_x = 2640, 126 .max_y = 1320, 127 .res_x = 30, /* units/mm */ 128 .res_y = 29, /* units/mm */ 129 .contact_size = 5, 130 .max_contacts = 5, 131 }; 132 133 static const struct asus_touchpad_info asus_t200ta_tp = { 134 .max_x = 3120, 135 .max_y = 1716, 136 .res_x = 30, /* units/mm */ 137 .res_y = 28, /* units/mm */ 138 .contact_size = 5, 139 .max_contacts = 5, 140 }; 141 142 static const struct asus_touchpad_info asus_t100chi_tp = { 143 .max_x = 2640, 144 .max_y = 1320, 145 .res_x = 31, /* units/mm */ 146 .res_y = 29, /* units/mm */ 147 .contact_size = 3, 148 .max_contacts = 4, 149 }; 150 151 static void asus_report_contact_down(struct asus_drvdata *drvdat, 152 int toolType, u8 *data) 153 { 154 struct input_dev *input = drvdat->input; 155 int touch_major, pressure, x, y; 156 157 x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1]; 158 y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]); 159 160 input_report_abs(input, ABS_MT_POSITION_X, x); 161 input_report_abs(input, ABS_MT_POSITION_Y, y); 162 163 if (drvdat->tp->contact_size < 5) 164 return; 165 166 if (toolType == MT_TOOL_PALM) { 167 touch_major = MAX_TOUCH_MAJOR; 168 pressure = MAX_PRESSURE; 169 } else { 170 touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK; 171 pressure = data[4] & CONTACT_PRESSURE_MASK; 172 } 173 174 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major); 175 input_report_abs(input, ABS_MT_PRESSURE, pressure); 176 } 177 178 /* Required for Synaptics Palm Detection */ 179 static void asus_report_tool_width(struct asus_drvdata *drvdat) 180 { 181 struct input_mt *mt = drvdat->input->mt; 182 struct input_mt_slot *oldest; 183 int oldid, count, i; 184 185 if (drvdat->tp->contact_size < 5) 186 return; 187 188 oldest = NULL; 189 oldid = mt->trkid; 190 count = 0; 191 192 for (i = 0; i < mt->num_slots; ++i) { 193 struct input_mt_slot *ps = &mt->slots[i]; 194 int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); 195 196 if (id < 0) 197 continue; 198 if ((id - oldid) & TRKID_SGN) { 199 oldest = ps; 200 oldid = id; 201 } 202 count++; 203 } 204 205 if (oldest) { 206 input_report_abs(drvdat->input, ABS_TOOL_WIDTH, 207 input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR)); 208 } 209 } 210 211 static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size) 212 { 213 int i, toolType = MT_TOOL_FINGER; 214 u8 *contactData = data + 2; 215 216 if (size != 3 + drvdat->tp->contact_size * drvdat->tp->max_contacts) 217 return 0; 218 219 for (i = 0; i < drvdat->tp->max_contacts; i++) { 220 bool down = !!(data[1] & BIT(i+3)); 221 222 if (drvdat->tp->contact_size >= 5) 223 toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ? 224 MT_TOOL_PALM : MT_TOOL_FINGER; 225 226 input_mt_slot(drvdat->input, i); 227 input_mt_report_slot_state(drvdat->input, toolType, down); 228 229 if (down) { 230 asus_report_contact_down(drvdat, toolType, contactData); 231 contactData += drvdat->tp->contact_size; 232 } 233 } 234 235 input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK); 236 asus_report_tool_width(drvdat); 237 238 input_mt_sync_frame(drvdat->input); 239 input_sync(drvdat->input); 240 241 return 1; 242 } 243 244 static int asus_raw_event(struct hid_device *hdev, 245 struct hid_report *report, u8 *data, int size) 246 { 247 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 248 249 if (drvdata->tp && data[0] == INPUT_REPORT_ID) 250 return asus_report_input(drvdata, data, size); 251 252 return 0; 253 } 254 255 static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size) 256 { 257 unsigned char *dmabuf; 258 int ret; 259 260 dmabuf = kmemdup(buf, buf_size, GFP_KERNEL); 261 if (!dmabuf) 262 return -ENOMEM; 263 264 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf, 265 buf_size, HID_FEATURE_REPORT, 266 HID_REQ_SET_REPORT); 267 kfree(dmabuf); 268 269 return ret; 270 } 271 272 static int asus_kbd_init(struct hid_device *hdev) 273 { 274 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54, 275 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 }; 276 int ret; 277 278 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 279 if (ret < 0) 280 hid_err(hdev, "Asus failed to send init command: %d\n", ret); 281 282 return ret; 283 } 284 285 static int asus_kbd_get_functions(struct hid_device *hdev, 286 unsigned char *kbd_func) 287 { 288 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 }; 289 u8 *readbuf; 290 int ret; 291 292 ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); 293 if (ret < 0) { 294 hid_err(hdev, "Asus failed to send configuration command: %d\n", ret); 295 return ret; 296 } 297 298 readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL); 299 if (!readbuf) 300 return -ENOMEM; 301 302 ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf, 303 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT, 304 HID_REQ_GET_REPORT); 305 if (ret < 0) { 306 hid_err(hdev, "Asus failed to request functions: %d\n", ret); 307 kfree(readbuf); 308 return ret; 309 } 310 311 *kbd_func = readbuf[6]; 312 313 kfree(readbuf); 314 return ret; 315 } 316 317 static void asus_kbd_backlight_set(struct led_classdev *led_cdev, 318 enum led_brightness brightness) 319 { 320 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 321 cdev); 322 if (led->brightness == brightness) 323 return; 324 325 led->brightness = brightness; 326 schedule_work(&led->work); 327 } 328 329 static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev) 330 { 331 struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds, 332 cdev); 333 334 return led->brightness; 335 } 336 337 static void asus_kbd_backlight_work(struct work_struct *work) 338 { 339 struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work); 340 u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 }; 341 int ret; 342 343 if (led->removed) 344 return; 345 346 buf[4] = led->brightness; 347 348 ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf)); 349 if (ret < 0) 350 hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret); 351 } 352 353 /* WMI-based keyboard backlight LED control (via asus-wmi driver) takes 354 * precedence. We only activate HID-based backlight control when the 355 * WMI control is not available. 356 */ 357 static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev) 358 { 359 u32 value; 360 int ret; 361 362 ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 363 ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value); 364 hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value); 365 if (ret) 366 return false; 367 368 return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT); 369 } 370 371 static int asus_kbd_register_leds(struct hid_device *hdev) 372 { 373 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 374 unsigned char kbd_func; 375 int ret; 376 377 /* Initialize keyboard */ 378 ret = asus_kbd_init(hdev); 379 if (ret < 0) 380 return ret; 381 382 /* Get keyboard functions */ 383 ret = asus_kbd_get_functions(hdev, &kbd_func); 384 if (ret < 0) 385 return ret; 386 387 /* Check for backlight support */ 388 if (!(kbd_func & SUPPORT_KBD_BACKLIGHT)) 389 return -ENODEV; 390 391 drvdata->kbd_backlight = devm_kzalloc(&hdev->dev, 392 sizeof(struct asus_kbd_leds), 393 GFP_KERNEL); 394 if (!drvdata->kbd_backlight) 395 return -ENOMEM; 396 397 drvdata->kbd_backlight->removed = false; 398 drvdata->kbd_backlight->brightness = 0; 399 drvdata->kbd_backlight->hdev = hdev; 400 drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight"; 401 drvdata->kbd_backlight->cdev.max_brightness = 3; 402 drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set; 403 drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get; 404 INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work); 405 406 ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev); 407 if (ret < 0) { 408 /* No need to have this still around */ 409 devm_kfree(&hdev->dev, drvdata->kbd_backlight); 410 } 411 412 return ret; 413 } 414 415 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) 416 { 417 struct input_dev *input = hi->input; 418 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 419 420 /* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */ 421 if (drvdata->quirks & QUIRK_T100CHI && 422 hi->report->id != T100CHI_MOUSE_REPORT_ID) 423 return 0; 424 425 if (drvdata->tp) { 426 int ret; 427 428 input_set_abs_params(input, ABS_MT_POSITION_X, 0, 429 drvdata->tp->max_x, 0, 0); 430 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 431 drvdata->tp->max_y, 0, 0); 432 input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x); 433 input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y); 434 435 if (drvdata->tp->contact_size >= 5) { 436 input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 437 MAX_TOUCH_MAJOR, 0, 0); 438 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 439 MAX_TOUCH_MAJOR, 0, 0); 440 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 441 MAX_PRESSURE, 0, 0); 442 } 443 444 __set_bit(BTN_LEFT, input->keybit); 445 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 446 447 ret = input_mt_init_slots(input, drvdata->tp->max_contacts, 448 INPUT_MT_POINTER); 449 450 if (ret) { 451 hid_err(hdev, "Asus input mt init slots failed: %d\n", ret); 452 return ret; 453 } 454 } 455 456 drvdata->input = input; 457 458 if (drvdata->enable_backlight && 459 !asus_kbd_wmi_led_control_present(hdev) && 460 asus_kbd_register_leds(hdev)) 461 hid_warn(hdev, "Failed to initialize backlight.\n"); 462 463 return 0; 464 } 465 466 #define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \ 467 max, EV_KEY, (c)) 468 static int asus_input_mapping(struct hid_device *hdev, 469 struct hid_input *hi, struct hid_field *field, 470 struct hid_usage *usage, unsigned long **bit, 471 int *max) 472 { 473 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 474 475 if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) { 476 /* Don't map anything from the HID report. 477 * We do it all manually in asus_input_configured 478 */ 479 return -1; 480 } 481 482 /* 483 * Ignore a bunch of bogus collections in the T100CHI descriptor. 484 * This avoids a bunch of non-functional hid_input devices getting 485 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT. 486 */ 487 if (drvdata->quirks & QUIRK_T100CHI) { 488 if (field->application == (HID_UP_GENDESK | 0x0080) || 489 usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) || 490 usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) || 491 usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)) 492 return -1; 493 /* 494 * We use the hid_input for the mouse report for the touchpad, 495 * keep the left button, to avoid the core removing it. 496 */ 497 if (field->application == HID_GD_MOUSE && 498 usage->hid != (HID_UP_BUTTON | 1)) 499 return -1; 500 } 501 502 /* ASUS-specific keyboard hotkeys */ 503 if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) { 504 set_bit(EV_REP, hi->input->evbit); 505 switch (usage->hid & HID_USAGE) { 506 case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 507 case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 508 case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break; 509 case 0x6c: asus_map_key_clear(KEY_SLEEP); break; 510 case 0x82: asus_map_key_clear(KEY_CAMERA); break; 511 case 0x88: asus_map_key_clear(KEY_RFKILL); break; 512 case 0xb5: asus_map_key_clear(KEY_CALC); break; 513 case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break; 514 case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break; 515 516 /* ASUS touchpad toggle */ 517 case 0x6b: asus_map_key_clear(KEY_F21); break; 518 519 /* ROG key */ 520 case 0x38: asus_map_key_clear(KEY_PROG1); break; 521 522 /* Fn+C ASUS Splendid */ 523 case 0xba: asus_map_key_clear(KEY_PROG2); break; 524 525 /* Fn+Space Power4Gear Hybrid */ 526 case 0x5c: asus_map_key_clear(KEY_PROG3); break; 527 528 default: 529 /* ASUS lazily declares 256 usages, ignore the rest, 530 * as some make the keyboard appear as a pointer device. */ 531 return -1; 532 } 533 534 /* 535 * Check and enable backlight only on devices with UsagePage == 536 * 0xff31 to avoid initializing the keyboard firmware multiple 537 * times on devices with multiple HID descriptors but same 538 * PID/VID. 539 */ 540 if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) 541 drvdata->enable_backlight = true; 542 543 return 1; 544 } 545 546 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) { 547 set_bit(EV_REP, hi->input->evbit); 548 switch (usage->hid & HID_USAGE) { 549 case 0xff01: asus_map_key_clear(BTN_1); break; 550 case 0xff02: asus_map_key_clear(BTN_2); break; 551 case 0xff03: asus_map_key_clear(BTN_3); break; 552 case 0xff04: asus_map_key_clear(BTN_4); break; 553 case 0xff05: asus_map_key_clear(BTN_5); break; 554 case 0xff06: asus_map_key_clear(BTN_6); break; 555 case 0xff07: asus_map_key_clear(BTN_7); break; 556 case 0xff08: asus_map_key_clear(BTN_8); break; 557 case 0xff09: asus_map_key_clear(BTN_9); break; 558 case 0xff0a: asus_map_key_clear(BTN_A); break; 559 case 0xff0b: asus_map_key_clear(BTN_B); break; 560 case 0x00f1: asus_map_key_clear(KEY_WLAN); break; 561 case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break; 562 case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break; 563 case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break; 564 case 0x00f7: asus_map_key_clear(KEY_CAMERA); break; 565 case 0x00f8: asus_map_key_clear(KEY_PROG1); break; 566 default: 567 return 0; 568 } 569 570 return 1; 571 } 572 573 if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES && 574 (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) { 575 switch (usage->hid & HID_USAGE) { 576 case 0xe2: /* Mute */ 577 case 0xe9: /* Volume up */ 578 case 0xea: /* Volume down */ 579 return 0; 580 default: 581 /* Ignore dummy Consumer usages which make the 582 * keyboard incorrectly appear as a pointer device. 583 */ 584 return -1; 585 } 586 } 587 588 return 0; 589 } 590 591 static int asus_start_multitouch(struct hid_device *hdev) 592 { 593 int ret; 594 static const unsigned char buf[] = { 595 FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 596 }; 597 unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL); 598 599 if (!dmabuf) { 600 ret = -ENOMEM; 601 hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret); 602 return ret; 603 } 604 605 ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf), 606 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 607 608 kfree(dmabuf); 609 610 if (ret != sizeof(buf)) { 611 hid_err(hdev, "Asus failed to start multitouch: %d\n", ret); 612 return ret; 613 } 614 615 return 0; 616 } 617 618 static int __maybe_unused asus_reset_resume(struct hid_device *hdev) 619 { 620 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 621 622 if (drvdata->tp) 623 return asus_start_multitouch(hdev); 624 625 return 0; 626 } 627 628 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id) 629 { 630 int ret; 631 struct asus_drvdata *drvdata; 632 633 drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL); 634 if (drvdata == NULL) { 635 hid_err(hdev, "Can't alloc Asus descriptor\n"); 636 return -ENOMEM; 637 } 638 639 hid_set_drvdata(hdev, drvdata); 640 641 drvdata->quirks = id->driver_data; 642 643 if (drvdata->quirks & QUIRK_IS_MULTITOUCH) 644 drvdata->tp = &asus_i2c_tp; 645 646 if (drvdata->quirks & QUIRK_T100_KEYBOARD) { 647 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 648 649 if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) { 650 drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING; 651 /* 652 * The T100HA uses the same USB-ids as the T100TAF and 653 * the T200TA uses the same USB-ids as the T100TA, while 654 * both have different max x/y values as the T100TA[F]. 655 */ 656 if (dmi_match(DMI_PRODUCT_NAME, "T100HAN")) 657 drvdata->tp = &asus_t100ha_tp; 658 else if (dmi_match(DMI_PRODUCT_NAME, "T200TA")) 659 drvdata->tp = &asus_t200ta_tp; 660 else 661 drvdata->tp = &asus_t100ta_tp; 662 } 663 } 664 665 if (drvdata->quirks & QUIRK_T100CHI) { 666 /* 667 * All functionality is on a single HID interface and for 668 * userspace the touchpad must be a separate input_dev. 669 */ 670 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 671 drvdata->tp = &asus_t100chi_tp; 672 } 673 674 if (drvdata->quirks & QUIRK_NO_INIT_REPORTS) 675 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 676 677 ret = hid_parse(hdev); 678 if (ret) { 679 hid_err(hdev, "Asus hid parse failed: %d\n", ret); 680 return ret; 681 } 682 683 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 684 if (ret) { 685 hid_err(hdev, "Asus hw start failed: %d\n", ret); 686 return ret; 687 } 688 689 if (!drvdata->input) { 690 hid_err(hdev, "Asus input not registered\n"); 691 ret = -ENOMEM; 692 goto err_stop_hw; 693 } 694 695 if (drvdata->tp) { 696 drvdata->input->name = "Asus TouchPad"; 697 } else { 698 drvdata->input->name = "Asus Keyboard"; 699 } 700 701 if (drvdata->tp) { 702 ret = asus_start_multitouch(hdev); 703 if (ret) 704 goto err_stop_hw; 705 } 706 707 return 0; 708 err_stop_hw: 709 hid_hw_stop(hdev); 710 return ret; 711 } 712 713 static void asus_remove(struct hid_device *hdev) 714 { 715 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 716 717 if (drvdata->kbd_backlight) { 718 drvdata->kbd_backlight->removed = true; 719 cancel_work_sync(&drvdata->kbd_backlight->work); 720 } 721 722 hid_hw_stop(hdev); 723 } 724 725 static const __u8 asus_g752_fixed_rdesc[] = { 726 0x19, 0x00, /* Usage Minimum (0x00) */ 727 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */ 728 }; 729 730 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc, 731 unsigned int *rsize) 732 { 733 struct asus_drvdata *drvdata = hid_get_drvdata(hdev); 734 735 if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT && 736 *rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) { 737 hid_info(hdev, "Fixing up Asus notebook report descriptor\n"); 738 rdesc[55] = 0xdd; 739 } 740 /* For the T100TA/T200TA keyboard dock */ 741 if (drvdata->quirks & QUIRK_T100_KEYBOARD && 742 (*rsize == 76 || *rsize == 101) && 743 rdesc[73] == 0x81 && rdesc[74] == 0x01) { 744 hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n"); 745 rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT; 746 } 747 /* For the T100CHI keyboard dock */ 748 if (drvdata->quirks & QUIRK_T100CHI && 749 *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) { 750 /* 751 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum 752 * (FFh) and clear the flags in the Input() byte. 753 * Note the descriptor has a bogus 0 byte at the end so we 754 * only need 1 extra byte. 755 */ 756 *rsize = 404; 757 rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL); 758 if (!rdesc) 759 return NULL; 760 761 hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n"); 762 memmove(rdesc + 392, rdesc + 390, 12); 763 rdesc[388] = 0x19; 764 rdesc[389] = 0x00; 765 rdesc[390] = 0x29; 766 rdesc[391] = 0xff; 767 rdesc[402] = 0x00; 768 } 769 if (drvdata->quirks & QUIRK_G752_KEYBOARD && 770 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) { 771 /* report is missing usage mninum and maximum */ 772 __u8 *new_rdesc; 773 size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc); 774 775 new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL); 776 if (new_rdesc == NULL) 777 return rdesc; 778 779 hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n"); 780 /* copy the valid part */ 781 memcpy(new_rdesc, rdesc, 61); 782 /* insert missing part */ 783 memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc)); 784 /* copy remaining data */ 785 memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61); 786 787 *rsize = new_size; 788 rdesc = new_rdesc; 789 } 790 791 return rdesc; 792 } 793 794 static const struct hid_device_id asus_devices[] = { 795 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 796 USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS}, 797 { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, 798 USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS }, 799 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 800 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT }, 801 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 802 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT }, 803 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 804 USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD }, 805 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 806 USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD), 807 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 808 { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, 809 USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD), 810 QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES }, 811 { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) }, 812 { HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) }, 813 { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) }, 814 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 815 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI }, 816 817 { } 818 }; 819 MODULE_DEVICE_TABLE(hid, asus_devices); 820 821 static struct hid_driver asus_driver = { 822 .name = "asus", 823 .id_table = asus_devices, 824 .report_fixup = asus_report_fixup, 825 .probe = asus_probe, 826 .remove = asus_remove, 827 .input_mapping = asus_input_mapping, 828 .input_configured = asus_input_configured, 829 #ifdef CONFIG_PM 830 .reset_resume = asus_reset_resume, 831 #endif 832 .raw_event = asus_raw_event 833 }; 834 module_hid_driver(asus_driver); 835 836 MODULE_LICENSE("GPL"); 837