1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2013 Andrew Duggan <aduggan@synaptics.com> 4 * Copyright (c) 2013 Synaptics Incorporated 5 * Copyright (c) 2014 Benjamin Tissoires <benjamin.tissoires@gmail.com> 6 * Copyright (c) 2014 Red Hat, Inc 7 */ 8 9 #include <linux/kernel.h> 10 #include <linux/hid.h> 11 #include <linux/input.h> 12 #include <linux/input/mt.h> 13 #include <linux/irq.h> 14 #include <linux/irqdomain.h> 15 #include <linux/module.h> 16 #include <linux/pm.h> 17 #include <linux/slab.h> 18 #include <linux/wait.h> 19 #include <linux/sched.h> 20 #include <linux/rmi.h> 21 #include "hid-ids.h" 22 23 #define RMI_MOUSE_REPORT_ID 0x01 /* Mouse emulation Report */ 24 #define RMI_WRITE_REPORT_ID 0x09 /* Output Report */ 25 #define RMI_READ_ADDR_REPORT_ID 0x0a /* Output Report */ 26 #define RMI_READ_DATA_REPORT_ID 0x0b /* Input Report */ 27 #define RMI_ATTN_REPORT_ID 0x0c /* Input Report */ 28 #define RMI_SET_RMI_MODE_REPORT_ID 0x0f /* Feature Report */ 29 30 /* flags */ 31 #define RMI_READ_REQUEST_PENDING 0 32 #define RMI_READ_DATA_PENDING 1 33 #define RMI_STARTED 2 34 35 /* device flags */ 36 #define RMI_DEVICE BIT(0) 37 #define RMI_DEVICE_HAS_PHYS_BUTTONS BIT(1) 38 #define RMI_DEVICE_OUTPUT_SET_REPORT BIT(2) 39 40 /* 41 * retrieve the ctrl registers 42 * the ctrl register has a size of 20 but a fw bug split it into 16 + 4, 43 * and there is no way to know if the first 20 bytes are here or not. 44 * We use only the first 12 bytes, so get only them. 45 */ 46 #define RMI_F11_CTRL_REG_COUNT 12 47 48 enum rmi_mode_type { 49 RMI_MODE_OFF = 0, 50 RMI_MODE_ATTN_REPORTS = 1, 51 RMI_MODE_NO_PACKED_ATTN_REPORTS = 2, 52 }; 53 54 /** 55 * struct rmi_data - stores information for hid communication 56 * 57 * @page_mutex: Locks current page to avoid changing pages in unexpected ways. 58 * @page: Keeps track of the current virtual page 59 * @xport: transport device to be registered with the RMI4 core. 60 * 61 * @wait: Used for waiting for read data 62 * 63 * @writeReport: output buffer when writing RMI registers 64 * @readReport: input buffer when reading RMI registers 65 * 66 * @input_report_size: size of an input report (advertised by HID) 67 * @output_report_size: size of an output report (advertised by HID) 68 * 69 * @flags: flags for the current device (started, reading, etc...) 70 * 71 * @reset_work: worker which will be called in case of a mouse report 72 * @hdev: pointer to the struct hid_device 73 * 74 * @device_flags: flags which describe the device 75 * 76 * @domain: the IRQ domain allocated for this RMI4 device 77 * @rmi_irq: the irq that will be used to generate events to rmi-core 78 */ 79 struct rmi_data { 80 struct mutex page_mutex; 81 int page; 82 struct rmi_transport_dev xport; 83 84 wait_queue_head_t wait; 85 86 u8 *writeReport; 87 u8 *readReport; 88 89 u32 input_report_size; 90 u32 output_report_size; 91 92 unsigned long flags; 93 94 struct work_struct reset_work; 95 struct hid_device *hdev; 96 97 unsigned long device_flags; 98 99 struct irq_domain *domain; 100 int rmi_irq; 101 }; 102 103 #define RMI_PAGE(addr) (((addr) >> 8) & 0xff) 104 105 static int rmi_write_report(struct hid_device *hdev, u8 *report, int len); 106 107 /** 108 * rmi_set_page - Set RMI page 109 * @hdev: The pointer to the hid_device struct 110 * @page: The new page address. 111 * 112 * RMI devices have 16-bit addressing, but some of the physical 113 * implementations (like SMBus) only have 8-bit addressing. So RMI implements 114 * a page address at 0xff of every page so we can reliable page addresses 115 * every 256 registers. 116 * 117 * The page_mutex lock must be held when this function is entered. 118 * 119 * Returns zero on success, non-zero on failure. 120 */ 121 static int rmi_set_page(struct hid_device *hdev, u8 page) 122 { 123 struct rmi_data *data = hid_get_drvdata(hdev); 124 int retval; 125 126 data->writeReport[0] = RMI_WRITE_REPORT_ID; 127 data->writeReport[1] = 1; 128 data->writeReport[2] = 0xFF; 129 data->writeReport[4] = page; 130 131 retval = rmi_write_report(hdev, data->writeReport, 132 data->output_report_size); 133 if (retval != data->output_report_size) { 134 dev_err(&hdev->dev, 135 "%s: set page failed: %d.", __func__, retval); 136 return retval; 137 } 138 139 data->page = page; 140 return 0; 141 } 142 143 static int rmi_set_mode(struct hid_device *hdev, u8 mode) 144 { 145 int ret; 146 const u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode}; 147 u8 *buf; 148 149 buf = kmemdup(txbuf, sizeof(txbuf), GFP_KERNEL); 150 if (!buf) 151 return -ENOMEM; 152 153 ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, buf, 154 sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 155 kfree(buf); 156 if (ret < 0) { 157 dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode, 158 ret); 159 return ret; 160 } 161 162 return 0; 163 } 164 165 static int rmi_write_report(struct hid_device *hdev, u8 *report, int len) 166 { 167 struct rmi_data *data = hid_get_drvdata(hdev); 168 int ret; 169 170 if (data->device_flags & RMI_DEVICE_OUTPUT_SET_REPORT) { 171 /* 172 * Talk to device by using SET_REPORT requests instead. 173 */ 174 ret = hid_hw_raw_request(hdev, report[0], report, 175 len, HID_OUTPUT_REPORT, HID_REQ_SET_REPORT); 176 } else { 177 ret = hid_hw_output_report(hdev, (void *)report, len); 178 } 179 180 if (ret < 0) { 181 dev_err(&hdev->dev, "failed to write hid report (%d)\n", ret); 182 return ret; 183 } 184 185 return ret; 186 } 187 188 static int rmi_hid_read_block(struct rmi_transport_dev *xport, u16 addr, 189 void *buf, size_t len) 190 { 191 struct rmi_data *data = container_of(xport, struct rmi_data, xport); 192 struct hid_device *hdev = data->hdev; 193 int ret; 194 int bytes_read; 195 int bytes_needed; 196 int retries; 197 int read_input_count; 198 199 mutex_lock(&data->page_mutex); 200 201 if (RMI_PAGE(addr) != data->page) { 202 ret = rmi_set_page(hdev, RMI_PAGE(addr)); 203 if (ret < 0) 204 goto exit; 205 } 206 207 for (retries = 5; retries > 0; retries--) { 208 data->writeReport[0] = RMI_READ_ADDR_REPORT_ID; 209 data->writeReport[1] = 0; /* old 1 byte read count */ 210 data->writeReport[2] = addr & 0xFF; 211 data->writeReport[3] = (addr >> 8) & 0xFF; 212 data->writeReport[4] = len & 0xFF; 213 data->writeReport[5] = (len >> 8) & 0xFF; 214 215 set_bit(RMI_READ_REQUEST_PENDING, &data->flags); 216 217 ret = rmi_write_report(hdev, data->writeReport, 218 data->output_report_size); 219 if (ret != data->output_report_size) { 220 dev_err(&hdev->dev, 221 "failed to write request output report (%d)\n", 222 ret); 223 goto exit; 224 } 225 226 bytes_read = 0; 227 bytes_needed = len; 228 while (bytes_read < len) { 229 if (!wait_event_timeout(data->wait, 230 test_bit(RMI_READ_DATA_PENDING, &data->flags), 231 msecs_to_jiffies(1000))) { 232 hid_warn(hdev, "%s: timeout elapsed\n", 233 __func__); 234 ret = -EAGAIN; 235 break; 236 } 237 238 read_input_count = data->readReport[1]; 239 memcpy(buf + bytes_read, &data->readReport[2], 240 min(read_input_count, bytes_needed)); 241 242 bytes_read += read_input_count; 243 bytes_needed -= read_input_count; 244 clear_bit(RMI_READ_DATA_PENDING, &data->flags); 245 } 246 247 if (ret >= 0) { 248 ret = 0; 249 break; 250 } 251 } 252 253 exit: 254 clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); 255 mutex_unlock(&data->page_mutex); 256 return ret; 257 } 258 259 static int rmi_hid_write_block(struct rmi_transport_dev *xport, u16 addr, 260 const void *buf, size_t len) 261 { 262 struct rmi_data *data = container_of(xport, struct rmi_data, xport); 263 struct hid_device *hdev = data->hdev; 264 int ret; 265 266 mutex_lock(&data->page_mutex); 267 268 if (RMI_PAGE(addr) != data->page) { 269 ret = rmi_set_page(hdev, RMI_PAGE(addr)); 270 if (ret < 0) 271 goto exit; 272 } 273 274 data->writeReport[0] = RMI_WRITE_REPORT_ID; 275 data->writeReport[1] = len; 276 data->writeReport[2] = addr & 0xFF; 277 data->writeReport[3] = (addr >> 8) & 0xFF; 278 memcpy(&data->writeReport[4], buf, len); 279 280 ret = rmi_write_report(hdev, data->writeReport, 281 data->output_report_size); 282 if (ret < 0) { 283 dev_err(&hdev->dev, 284 "failed to write request output report (%d)\n", 285 ret); 286 goto exit; 287 } 288 ret = 0; 289 290 exit: 291 mutex_unlock(&data->page_mutex); 292 return ret; 293 } 294 295 static int rmi_reset_attn_mode(struct hid_device *hdev) 296 { 297 struct rmi_data *data = hid_get_drvdata(hdev); 298 struct rmi_device *rmi_dev = data->xport.rmi_dev; 299 int ret; 300 301 ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); 302 if (ret) 303 return ret; 304 305 if (test_bit(RMI_STARTED, &data->flags)) 306 ret = rmi_dev->driver->reset_handler(rmi_dev); 307 308 return ret; 309 } 310 311 static void rmi_reset_work(struct work_struct *work) 312 { 313 struct rmi_data *hdata = container_of(work, struct rmi_data, 314 reset_work); 315 316 /* switch the device to RMI if we receive a generic mouse report */ 317 rmi_reset_attn_mode(hdata->hdev); 318 } 319 320 static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) 321 { 322 struct rmi_data *hdata = hid_get_drvdata(hdev); 323 struct rmi_device *rmi_dev = hdata->xport.rmi_dev; 324 unsigned long flags; 325 326 if (!(test_bit(RMI_STARTED, &hdata->flags))) 327 return 0; 328 329 local_irq_save(flags); 330 331 rmi_set_attn_data(rmi_dev, data[1], &data[2], size - 2); 332 333 generic_handle_irq(hdata->rmi_irq); 334 335 local_irq_restore(flags); 336 337 return 1; 338 } 339 340 static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size) 341 { 342 struct rmi_data *hdata = hid_get_drvdata(hdev); 343 344 if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) { 345 hid_dbg(hdev, "no read request pending\n"); 346 return 0; 347 } 348 349 memcpy(hdata->readReport, data, min((u32)size, hdata->input_report_size)); 350 set_bit(RMI_READ_DATA_PENDING, &hdata->flags); 351 wake_up(&hdata->wait); 352 353 return 1; 354 } 355 356 static int rmi_check_sanity(struct hid_device *hdev, u8 *data, int size) 357 { 358 int valid_size = size; 359 /* 360 * On the Dell XPS 13 9333, the bus sometimes get confused and fills 361 * the report with a sentinel value "ff". Synaptics told us that such 362 * behavior does not comes from the touchpad itself, so we filter out 363 * such reports here. 364 */ 365 366 while ((data[valid_size - 1] == 0xff) && valid_size > 0) 367 valid_size--; 368 369 return valid_size; 370 } 371 372 static int rmi_raw_event(struct hid_device *hdev, 373 struct hid_report *report, u8 *data, int size) 374 { 375 struct rmi_data *hdata = hid_get_drvdata(hdev); 376 377 if (!(hdata->device_flags & RMI_DEVICE)) 378 return 0; 379 380 size = rmi_check_sanity(hdev, data, size); 381 if (size < 2) 382 return 0; 383 384 switch (data[0]) { 385 case RMI_READ_DATA_REPORT_ID: 386 return rmi_read_data_event(hdev, data, size); 387 case RMI_ATTN_REPORT_ID: 388 return rmi_input_event(hdev, data, size); 389 default: 390 return 1; 391 } 392 393 return 0; 394 } 395 396 static int rmi_event(struct hid_device *hdev, struct hid_field *field, 397 struct hid_usage *usage, __s32 value) 398 { 399 struct rmi_data *data = hid_get_drvdata(hdev); 400 401 if ((data->device_flags & RMI_DEVICE) && 402 (field->application == HID_GD_POINTER || 403 field->application == HID_GD_MOUSE)) { 404 if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) { 405 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) 406 return 0; 407 408 if ((usage->hid == HID_GD_X || usage->hid == HID_GD_Y) 409 && !value) 410 return 1; 411 } 412 413 schedule_work(&data->reset_work); 414 return 1; 415 } 416 417 return 0; 418 } 419 420 static void rmi_report(struct hid_device *hid, struct hid_report *report) 421 { 422 struct hid_field *field = report->field[0]; 423 424 if (!(hid->claimed & HID_CLAIMED_INPUT)) 425 return; 426 427 switch (report->id) { 428 case RMI_READ_DATA_REPORT_ID: 429 case RMI_ATTN_REPORT_ID: 430 return; 431 } 432 433 if (field && field->hidinput && field->hidinput->input) 434 input_sync(field->hidinput->input); 435 } 436 437 #ifdef CONFIG_PM 438 static int rmi_suspend(struct hid_device *hdev, pm_message_t message) 439 { 440 struct rmi_data *data = hid_get_drvdata(hdev); 441 struct rmi_device *rmi_dev = data->xport.rmi_dev; 442 int ret; 443 444 if (!(data->device_flags & RMI_DEVICE)) 445 return 0; 446 447 ret = rmi_driver_suspend(rmi_dev, false); 448 if (ret) { 449 hid_warn(hdev, "Failed to suspend device: %d\n", ret); 450 return ret; 451 } 452 453 return 0; 454 } 455 456 static int rmi_post_resume(struct hid_device *hdev) 457 { 458 struct rmi_data *data = hid_get_drvdata(hdev); 459 struct rmi_device *rmi_dev = data->xport.rmi_dev; 460 int ret; 461 462 if (!(data->device_flags & RMI_DEVICE)) 463 return 0; 464 465 /* Make sure the HID device is ready to receive events */ 466 ret = hid_hw_open(hdev); 467 if (ret) 468 return ret; 469 470 ret = rmi_reset_attn_mode(hdev); 471 if (ret) 472 goto out; 473 474 ret = rmi_driver_resume(rmi_dev, false); 475 if (ret) { 476 hid_warn(hdev, "Failed to resume device: %d\n", ret); 477 goto out; 478 } 479 480 out: 481 hid_hw_close(hdev); 482 return ret; 483 } 484 #endif /* CONFIG_PM */ 485 486 static int rmi_hid_reset(struct rmi_transport_dev *xport, u16 reset_addr) 487 { 488 struct rmi_data *data = container_of(xport, struct rmi_data, xport); 489 struct hid_device *hdev = data->hdev; 490 491 return rmi_reset_attn_mode(hdev); 492 } 493 494 static int rmi_input_configured(struct hid_device *hdev, struct hid_input *hi) 495 { 496 struct rmi_data *data = hid_get_drvdata(hdev); 497 struct input_dev *input = hi->input; 498 int ret = 0; 499 500 if (!(data->device_flags & RMI_DEVICE)) 501 return 0; 502 503 data->xport.input = input; 504 505 hid_dbg(hdev, "Opening low level driver\n"); 506 ret = hid_hw_open(hdev); 507 if (ret) 508 return ret; 509 510 /* Allow incoming hid reports */ 511 hid_device_io_start(hdev); 512 513 ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); 514 if (ret < 0) { 515 dev_err(&hdev->dev, "failed to set rmi mode\n"); 516 goto exit; 517 } 518 519 ret = rmi_set_page(hdev, 0); 520 if (ret < 0) { 521 dev_err(&hdev->dev, "failed to set page select to 0.\n"); 522 goto exit; 523 } 524 525 ret = rmi_register_transport_device(&data->xport); 526 if (ret < 0) { 527 dev_err(&hdev->dev, "failed to register transport driver\n"); 528 goto exit; 529 } 530 531 set_bit(RMI_STARTED, &data->flags); 532 533 exit: 534 hid_device_io_stop(hdev); 535 hid_hw_close(hdev); 536 return ret; 537 } 538 539 static int rmi_input_mapping(struct hid_device *hdev, 540 struct hid_input *hi, struct hid_field *field, 541 struct hid_usage *usage, unsigned long **bit, int *max) 542 { 543 struct rmi_data *data = hid_get_drvdata(hdev); 544 545 /* 546 * we want to make HID ignore the advertised HID collection 547 * for RMI deivces 548 */ 549 if (data->device_flags & RMI_DEVICE) { 550 if ((data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) && 551 ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)) 552 return 0; 553 554 return -1; 555 } 556 557 return 0; 558 } 559 560 static int rmi_check_valid_report_id(struct hid_device *hdev, unsigned type, 561 unsigned id, struct hid_report **report) 562 { 563 int i; 564 565 *report = hdev->report_enum[type].report_id_hash[id]; 566 if (*report) { 567 for (i = 0; i < (*report)->maxfield; i++) { 568 unsigned app = (*report)->field[i]->application; 569 if ((app & HID_USAGE_PAGE) >= HID_UP_MSVENDOR) 570 return 1; 571 } 572 } 573 574 return 0; 575 } 576 577 static struct rmi_device_platform_data rmi_hid_pdata = { 578 .sensor_pdata = { 579 .sensor_type = rmi_sensor_touchpad, 580 .axis_align.flip_y = true, 581 .dribble = RMI_REG_STATE_ON, 582 .palm_detect = RMI_REG_STATE_OFF, 583 }, 584 }; 585 586 static const struct rmi_transport_ops hid_rmi_ops = { 587 .write_block = rmi_hid_write_block, 588 .read_block = rmi_hid_read_block, 589 .reset = rmi_hid_reset, 590 }; 591 592 static void rmi_irq_teardown(void *data) 593 { 594 struct rmi_data *hdata = data; 595 struct irq_domain *domain = hdata->domain; 596 597 if (!domain) 598 return; 599 600 irq_dispose_mapping(irq_find_mapping(domain, 0)); 601 602 irq_domain_remove(domain); 603 hdata->domain = NULL; 604 hdata->rmi_irq = 0; 605 } 606 607 static int rmi_irq_map(struct irq_domain *h, unsigned int virq, 608 irq_hw_number_t hw_irq_num) 609 { 610 irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq); 611 612 return 0; 613 } 614 615 static const struct irq_domain_ops rmi_irq_ops = { 616 .map = rmi_irq_map, 617 }; 618 619 static int rmi_setup_irq_domain(struct hid_device *hdev) 620 { 621 struct rmi_data *hdata = hid_get_drvdata(hdev); 622 int ret; 623 624 hdata->domain = irq_domain_create_linear(hdev->dev.fwnode, 1, 625 &rmi_irq_ops, hdata); 626 if (!hdata->domain) 627 return -ENOMEM; 628 629 ret = devm_add_action_or_reset(&hdev->dev, &rmi_irq_teardown, hdata); 630 if (ret) 631 return ret; 632 633 hdata->rmi_irq = irq_create_mapping(hdata->domain, 0); 634 if (hdata->rmi_irq <= 0) { 635 hid_err(hdev, "Can't allocate an IRQ\n"); 636 return hdata->rmi_irq < 0 ? hdata->rmi_irq : -ENXIO; 637 } 638 639 return 0; 640 } 641 642 static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) 643 { 644 struct rmi_data *data = NULL; 645 int ret; 646 size_t alloc_size; 647 struct hid_report *input_report; 648 struct hid_report *output_report; 649 struct hid_report *feature_report; 650 651 data = devm_kzalloc(&hdev->dev, sizeof(struct rmi_data), GFP_KERNEL); 652 if (!data) 653 return -ENOMEM; 654 655 INIT_WORK(&data->reset_work, rmi_reset_work); 656 data->hdev = hdev; 657 658 hid_set_drvdata(hdev, data); 659 660 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 661 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC; 662 663 ret = hid_parse(hdev); 664 if (ret) { 665 hid_err(hdev, "parse failed\n"); 666 return ret; 667 } 668 669 if (id->driver_data) 670 data->device_flags = id->driver_data; 671 672 /* 673 * Check for the RMI specific report ids. If they are misisng 674 * simply return and let the events be processed by hid-input 675 */ 676 if (!rmi_check_valid_report_id(hdev, HID_FEATURE_REPORT, 677 RMI_SET_RMI_MODE_REPORT_ID, &feature_report)) { 678 hid_dbg(hdev, "device does not have set mode feature report\n"); 679 goto start; 680 } 681 682 if (!rmi_check_valid_report_id(hdev, HID_INPUT_REPORT, 683 RMI_ATTN_REPORT_ID, &input_report)) { 684 hid_dbg(hdev, "device does not have attention input report\n"); 685 goto start; 686 } 687 688 data->input_report_size = hid_report_len(input_report); 689 690 if (!rmi_check_valid_report_id(hdev, HID_OUTPUT_REPORT, 691 RMI_WRITE_REPORT_ID, &output_report)) { 692 hid_dbg(hdev, 693 "device does not have rmi write output report\n"); 694 goto start; 695 } 696 697 data->output_report_size = hid_report_len(output_report); 698 699 data->device_flags |= RMI_DEVICE; 700 alloc_size = data->output_report_size + data->input_report_size; 701 702 data->writeReport = devm_kzalloc(&hdev->dev, alloc_size, GFP_KERNEL); 703 if (!data->writeReport) { 704 hid_err(hdev, "failed to allocate buffer for HID reports\n"); 705 return -ENOMEM; 706 } 707 708 data->readReport = data->writeReport + data->output_report_size; 709 710 init_waitqueue_head(&data->wait); 711 712 mutex_init(&data->page_mutex); 713 714 ret = rmi_setup_irq_domain(hdev); 715 if (ret) { 716 hid_err(hdev, "failed to allocate IRQ domain\n"); 717 return ret; 718 } 719 720 if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) 721 rmi_hid_pdata.gpio_data.disable = true; 722 723 data->xport.dev = hdev->dev.parent; 724 data->xport.pdata = rmi_hid_pdata; 725 data->xport.pdata.irq = data->rmi_irq; 726 data->xport.proto_name = "hid"; 727 data->xport.ops = &hid_rmi_ops; 728 729 start: 730 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 731 if (ret) { 732 hid_err(hdev, "hw start failed\n"); 733 return ret; 734 } 735 736 return 0; 737 } 738 739 static void rmi_remove(struct hid_device *hdev) 740 { 741 struct rmi_data *hdata = hid_get_drvdata(hdev); 742 743 if ((hdata->device_flags & RMI_DEVICE) 744 && test_bit(RMI_STARTED, &hdata->flags)) { 745 clear_bit(RMI_STARTED, &hdata->flags); 746 cancel_work_sync(&hdata->reset_work); 747 rmi_unregister_transport_device(&hdata->xport); 748 } 749 750 hid_hw_stop(hdev); 751 } 752 753 static const struct hid_device_id rmi_id[] = { 754 { HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14), 755 .driver_data = RMI_DEVICE_HAS_PHYS_BUTTONS }, 756 { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_COVER) }, 757 { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_REZEL) }, 758 { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5), 759 .driver_data = RMI_DEVICE_OUTPUT_SET_REPORT }, 760 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_RMI, HID_ANY_ID, HID_ANY_ID) }, 761 { } 762 }; 763 MODULE_DEVICE_TABLE(hid, rmi_id); 764 765 static struct hid_driver rmi_driver = { 766 .name = "hid-rmi", 767 .id_table = rmi_id, 768 .probe = rmi_probe, 769 .remove = rmi_remove, 770 .event = rmi_event, 771 .raw_event = rmi_raw_event, 772 .report = rmi_report, 773 .input_mapping = rmi_input_mapping, 774 .input_configured = rmi_input_configured, 775 #ifdef CONFIG_PM 776 .suspend = rmi_suspend, 777 .resume = rmi_post_resume, 778 .reset_resume = rmi_post_resume, 779 #endif 780 }; 781 782 module_hid_driver(rmi_driver); 783 784 MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>"); 785 MODULE_DESCRIPTION("RMI HID driver"); 786 MODULE_LICENSE("GPL"); 787