1 /* 2 * Wacom W8001 penabled serial touchscreen driver 3 * 4 * Copyright (c) 2008 Jaya Kumar 5 * Copyright (c) 2010 Red Hat, Inc. 6 * Copyright (c) 2010 - 2011 Ping Cheng, Wacom. <pingc@wacom.com> 7 * 8 * This file is subject to the terms and conditions of the GNU General Public 9 * License. See the file COPYING in the main directory of this archive for 10 * more details. 11 * 12 * Layout based on Elo serial touchscreen driver by Vojtech Pavlik 13 */ 14 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/slab.h> 19 #include <linux/input/mt.h> 20 #include <linux/serio.h> 21 #include <linux/ctype.h> 22 #include <linux/delay.h> 23 24 #define DRIVER_DESC "Wacom W8001 serial touchscreen driver" 25 26 MODULE_AUTHOR("Jaya Kumar <jayakumar.lkml@gmail.com>"); 27 MODULE_DESCRIPTION(DRIVER_DESC); 28 MODULE_LICENSE("GPL"); 29 30 #define W8001_MAX_LENGTH 13 31 #define W8001_LEAD_MASK 0x80 32 #define W8001_LEAD_BYTE 0x80 33 #define W8001_TAB_MASK 0x40 34 #define W8001_TAB_BYTE 0x40 35 /* set in first byte of touch data packets */ 36 #define W8001_TOUCH_MASK (0x10 | W8001_LEAD_MASK) 37 #define W8001_TOUCH_BYTE (0x10 | W8001_LEAD_BYTE) 38 39 #define W8001_QUERY_PACKET 0x20 40 41 #define W8001_CMD_STOP '0' 42 #define W8001_CMD_START '1' 43 #define W8001_CMD_QUERY '*' 44 #define W8001_CMD_TOUCHQUERY '%' 45 46 /* length of data packets in bytes, depends on device. */ 47 #define W8001_PKTLEN_TOUCH93 5 48 #define W8001_PKTLEN_TOUCH9A 7 49 #define W8001_PKTLEN_TPCPEN 9 50 #define W8001_PKTLEN_TPCCTL 11 /* control packet */ 51 #define W8001_PKTLEN_TOUCH2FG 13 52 53 /* resolution in points/mm */ 54 #define W8001_PEN_RESOLUTION 100 55 #define W8001_TOUCH_RESOLUTION 10 56 57 struct w8001_coord { 58 u8 rdy; 59 u8 tsw; 60 u8 f1; 61 u8 f2; 62 u16 x; 63 u16 y; 64 u16 pen_pressure; 65 u8 tilt_x; 66 u8 tilt_y; 67 }; 68 69 /* touch query reply packet */ 70 struct w8001_touch_query { 71 u16 x; 72 u16 y; 73 u8 panel_res; 74 u8 capacity_res; 75 u8 sensor_id; 76 }; 77 78 /* 79 * Per-touchscreen data. 80 */ 81 82 struct w8001 { 83 struct input_dev *pen_dev; 84 struct input_dev *touch_dev; 85 struct serio *serio; 86 struct completion cmd_done; 87 int id; 88 int idx; 89 unsigned char response_type; 90 unsigned char response[W8001_MAX_LENGTH]; 91 unsigned char data[W8001_MAX_LENGTH]; 92 char phys[32]; 93 int type; 94 unsigned int pktlen; 95 u16 max_touch_x; 96 u16 max_touch_y; 97 u16 max_pen_x; 98 u16 max_pen_y; 99 char pen_name[64]; 100 char touch_name[64]; 101 int open_count; 102 struct mutex mutex; 103 }; 104 105 static void parse_pen_data(u8 *data, struct w8001_coord *coord) 106 { 107 memset(coord, 0, sizeof(*coord)); 108 109 coord->rdy = data[0] & 0x20; 110 coord->tsw = data[0] & 0x01; 111 coord->f1 = data[0] & 0x02; 112 coord->f2 = data[0] & 0x04; 113 114 coord->x = (data[1] & 0x7F) << 9; 115 coord->x |= (data[2] & 0x7F) << 2; 116 coord->x |= (data[6] & 0x60) >> 5; 117 118 coord->y = (data[3] & 0x7F) << 9; 119 coord->y |= (data[4] & 0x7F) << 2; 120 coord->y |= (data[6] & 0x18) >> 3; 121 122 coord->pen_pressure = data[5] & 0x7F; 123 coord->pen_pressure |= (data[6] & 0x07) << 7 ; 124 125 coord->tilt_x = data[7] & 0x7F; 126 coord->tilt_y = data[8] & 0x7F; 127 } 128 129 static void parse_single_touch(u8 *data, struct w8001_coord *coord) 130 { 131 coord->x = (data[1] << 7) | data[2]; 132 coord->y = (data[3] << 7) | data[4]; 133 coord->tsw = data[0] & 0x01; 134 } 135 136 static void scale_touch_coordinates(struct w8001 *w8001, 137 unsigned int *x, unsigned int *y) 138 { 139 if (w8001->max_pen_x && w8001->max_touch_x) 140 *x = *x * w8001->max_pen_x / w8001->max_touch_x; 141 142 if (w8001->max_pen_y && w8001->max_touch_y) 143 *y = *y * w8001->max_pen_y / w8001->max_touch_y; 144 } 145 146 static void parse_multi_touch(struct w8001 *w8001) 147 { 148 struct input_dev *dev = w8001->touch_dev; 149 unsigned char *data = w8001->data; 150 unsigned int x, y; 151 int i; 152 int count = 0; 153 154 for (i = 0; i < 2; i++) { 155 bool touch = data[0] & (1 << i); 156 157 input_mt_slot(dev, i); 158 input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch); 159 if (touch) { 160 x = (data[6 * i + 1] << 7) | data[6 * i + 2]; 161 y = (data[6 * i + 3] << 7) | data[6 * i + 4]; 162 /* data[5,6] and [11,12] is finger capacity */ 163 164 /* scale to pen maximum */ 165 scale_touch_coordinates(w8001, &x, &y); 166 167 input_report_abs(dev, ABS_MT_POSITION_X, x); 168 input_report_abs(dev, ABS_MT_POSITION_Y, y); 169 count++; 170 } 171 } 172 173 /* emulate single touch events when stylus is out of proximity. 174 * This is to make single touch backward support consistent 175 * across all Wacom single touch devices. 176 */ 177 if (w8001->type != BTN_TOOL_PEN && 178 w8001->type != BTN_TOOL_RUBBER) { 179 w8001->type = count == 1 ? BTN_TOOL_FINGER : KEY_RESERVED; 180 input_mt_report_pointer_emulation(dev, true); 181 } 182 183 input_sync(dev); 184 } 185 186 static void parse_touchquery(u8 *data, struct w8001_touch_query *query) 187 { 188 memset(query, 0, sizeof(*query)); 189 190 query->panel_res = data[1]; 191 query->sensor_id = data[2] & 0x7; 192 query->capacity_res = data[7]; 193 194 query->x = data[3] << 9; 195 query->x |= data[4] << 2; 196 query->x |= (data[2] >> 5) & 0x3; 197 198 query->y = data[5] << 9; 199 query->y |= data[6] << 2; 200 query->y |= (data[2] >> 3) & 0x3; 201 202 /* Early days' single-finger touch models need the following defaults */ 203 if (!query->x && !query->y) { 204 query->x = 1024; 205 query->y = 1024; 206 if (query->panel_res) 207 query->x = query->y = (1 << query->panel_res); 208 query->panel_res = W8001_TOUCH_RESOLUTION; 209 } 210 } 211 212 static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord) 213 { 214 struct input_dev *dev = w8001->pen_dev; 215 216 /* 217 * We have 1 bit for proximity (rdy) and 3 bits for tip, side, 218 * side2/eraser. If rdy && f2 are set, this can be either pen + side2, 219 * or eraser. Assume: 220 * - if dev is already in proximity and f2 is toggled → pen + side2 221 * - if dev comes into proximity with f2 set → eraser 222 * If f2 disappears after assuming eraser, fake proximity out for 223 * eraser and in for pen. 224 */ 225 226 switch (w8001->type) { 227 case BTN_TOOL_RUBBER: 228 if (!coord->f2) { 229 input_report_abs(dev, ABS_PRESSURE, 0); 230 input_report_key(dev, BTN_TOUCH, 0); 231 input_report_key(dev, BTN_STYLUS, 0); 232 input_report_key(dev, BTN_STYLUS2, 0); 233 input_report_key(dev, BTN_TOOL_RUBBER, 0); 234 input_sync(dev); 235 w8001->type = BTN_TOOL_PEN; 236 } 237 break; 238 239 case BTN_TOOL_FINGER: 240 case KEY_RESERVED: 241 w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN; 242 break; 243 244 default: 245 input_report_key(dev, BTN_STYLUS2, coord->f2); 246 break; 247 } 248 249 input_report_abs(dev, ABS_X, coord->x); 250 input_report_abs(dev, ABS_Y, coord->y); 251 input_report_abs(dev, ABS_PRESSURE, coord->pen_pressure); 252 input_report_key(dev, BTN_TOUCH, coord->tsw); 253 input_report_key(dev, BTN_STYLUS, coord->f1); 254 input_report_key(dev, w8001->type, coord->rdy); 255 input_sync(dev); 256 257 if (!coord->rdy) 258 w8001->type = KEY_RESERVED; 259 } 260 261 static void report_single_touch(struct w8001 *w8001, struct w8001_coord *coord) 262 { 263 struct input_dev *dev = w8001->touch_dev; 264 unsigned int x = coord->x; 265 unsigned int y = coord->y; 266 267 /* scale to pen maximum */ 268 scale_touch_coordinates(w8001, &x, &y); 269 270 input_report_abs(dev, ABS_X, x); 271 input_report_abs(dev, ABS_Y, y); 272 input_report_key(dev, BTN_TOUCH, coord->tsw); 273 274 input_sync(dev); 275 276 w8001->type = coord->tsw ? BTN_TOOL_FINGER : KEY_RESERVED; 277 } 278 279 static irqreturn_t w8001_interrupt(struct serio *serio, 280 unsigned char data, unsigned int flags) 281 { 282 struct w8001 *w8001 = serio_get_drvdata(serio); 283 struct w8001_coord coord; 284 unsigned char tmp; 285 286 w8001->data[w8001->idx] = data; 287 switch (w8001->idx++) { 288 case 0: 289 if ((data & W8001_LEAD_MASK) != W8001_LEAD_BYTE) { 290 pr_debug("w8001: unsynchronized data: 0x%02x\n", data); 291 w8001->idx = 0; 292 } 293 break; 294 295 case W8001_PKTLEN_TOUCH93 - 1: 296 case W8001_PKTLEN_TOUCH9A - 1: 297 tmp = w8001->data[0] & W8001_TOUCH_BYTE; 298 if (tmp != W8001_TOUCH_BYTE) 299 break; 300 301 if (w8001->pktlen == w8001->idx) { 302 w8001->idx = 0; 303 if (w8001->type != BTN_TOOL_PEN && 304 w8001->type != BTN_TOOL_RUBBER) { 305 parse_single_touch(w8001->data, &coord); 306 report_single_touch(w8001, &coord); 307 } 308 } 309 break; 310 311 /* Pen coordinates packet */ 312 case W8001_PKTLEN_TPCPEN - 1: 313 tmp = w8001->data[0] & W8001_TAB_MASK; 314 if (unlikely(tmp == W8001_TAB_BYTE)) 315 break; 316 317 tmp = w8001->data[0] & W8001_TOUCH_BYTE; 318 if (tmp == W8001_TOUCH_BYTE) 319 break; 320 321 w8001->idx = 0; 322 parse_pen_data(w8001->data, &coord); 323 report_pen_events(w8001, &coord); 324 break; 325 326 /* control packet */ 327 case W8001_PKTLEN_TPCCTL - 1: 328 tmp = w8001->data[0] & W8001_TOUCH_MASK; 329 if (tmp == W8001_TOUCH_BYTE) 330 break; 331 332 w8001->idx = 0; 333 memcpy(w8001->response, w8001->data, W8001_MAX_LENGTH); 334 w8001->response_type = W8001_QUERY_PACKET; 335 complete(&w8001->cmd_done); 336 break; 337 338 /* 2 finger touch packet */ 339 case W8001_PKTLEN_TOUCH2FG - 1: 340 w8001->idx = 0; 341 parse_multi_touch(w8001); 342 break; 343 344 default: 345 /* 346 * ThinkPad X60 Tablet PC (pen only device) sometimes 347 * sends invalid data packets that are larger than 348 * W8001_PKTLEN_TPCPEN. Let's start over again. 349 */ 350 if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1) 351 w8001->idx = 0; 352 } 353 354 return IRQ_HANDLED; 355 } 356 357 static int w8001_command(struct w8001 *w8001, unsigned char command, 358 bool wait_response) 359 { 360 int rc; 361 362 w8001->response_type = 0; 363 init_completion(&w8001->cmd_done); 364 365 rc = serio_write(w8001->serio, command); 366 if (rc == 0 && wait_response) { 367 368 wait_for_completion_timeout(&w8001->cmd_done, HZ); 369 if (w8001->response_type != W8001_QUERY_PACKET) 370 rc = -EIO; 371 } 372 373 return rc; 374 } 375 376 static int w8001_open(struct input_dev *dev) 377 { 378 struct w8001 *w8001 = input_get_drvdata(dev); 379 int err; 380 381 err = mutex_lock_interruptible(&w8001->mutex); 382 if (err) 383 return err; 384 385 if (w8001->open_count++ == 0) { 386 err = w8001_command(w8001, W8001_CMD_START, false); 387 if (err) 388 w8001->open_count--; 389 } 390 391 mutex_unlock(&w8001->mutex); 392 return err; 393 } 394 395 static void w8001_close(struct input_dev *dev) 396 { 397 struct w8001 *w8001 = input_get_drvdata(dev); 398 399 mutex_lock(&w8001->mutex); 400 401 if (--w8001->open_count == 0) 402 w8001_command(w8001, W8001_CMD_STOP, false); 403 404 mutex_unlock(&w8001->mutex); 405 } 406 407 static int w8001_detect(struct w8001 *w8001) 408 { 409 int error; 410 411 error = w8001_command(w8001, W8001_CMD_STOP, false); 412 if (error) 413 return error; 414 415 msleep(250); /* wait 250ms before querying the device */ 416 417 return 0; 418 } 419 420 static int w8001_setup_pen(struct w8001 *w8001, char *basename, 421 size_t basename_sz) 422 { 423 struct input_dev *dev = w8001->pen_dev; 424 struct w8001_coord coord; 425 int error; 426 427 /* penabled? */ 428 error = w8001_command(w8001, W8001_CMD_QUERY, true); 429 if (error) 430 return error; 431 432 __set_bit(EV_KEY, dev->evbit); 433 __set_bit(EV_ABS, dev->evbit); 434 __set_bit(BTN_TOUCH, dev->keybit); 435 __set_bit(BTN_TOOL_PEN, dev->keybit); 436 __set_bit(BTN_TOOL_RUBBER, dev->keybit); 437 __set_bit(BTN_STYLUS, dev->keybit); 438 __set_bit(BTN_STYLUS2, dev->keybit); 439 __set_bit(INPUT_PROP_DIRECT, dev->propbit); 440 441 parse_pen_data(w8001->response, &coord); 442 w8001->max_pen_x = coord.x; 443 w8001->max_pen_y = coord.y; 444 445 input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); 446 input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); 447 input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); 448 input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); 449 input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); 450 if (coord.tilt_x && coord.tilt_y) { 451 input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0); 452 input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0); 453 } 454 455 w8001->id = 0x90; 456 strlcat(basename, " Penabled", basename_sz); 457 458 return 0; 459 } 460 461 static int w8001_setup_touch(struct w8001 *w8001, char *basename, 462 size_t basename_sz) 463 { 464 struct input_dev *dev = w8001->touch_dev; 465 struct w8001_touch_query touch; 466 int error; 467 468 469 /* Touch enabled? */ 470 error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true); 471 if (error) 472 return error; 473 /* 474 * Some non-touch devices may reply to the touch query. But their 475 * second byte is empty, which indicates touch is not supported. 476 */ 477 if (!w8001->response[1]) 478 return -ENXIO; 479 480 __set_bit(EV_KEY, dev->evbit); 481 __set_bit(EV_ABS, dev->evbit); 482 __set_bit(BTN_TOUCH, dev->keybit); 483 __set_bit(INPUT_PROP_DIRECT, dev->propbit); 484 485 parse_touchquery(w8001->response, &touch); 486 w8001->max_touch_x = touch.x; 487 w8001->max_touch_y = touch.y; 488 489 if (w8001->max_pen_x && w8001->max_pen_y) { 490 /* if pen is supported scale to pen maximum */ 491 touch.x = w8001->max_pen_x; 492 touch.y = w8001->max_pen_y; 493 touch.panel_res = W8001_PEN_RESOLUTION; 494 } 495 496 input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); 497 input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); 498 input_abs_set_res(dev, ABS_X, touch.panel_res); 499 input_abs_set_res(dev, ABS_Y, touch.panel_res); 500 501 switch (touch.sensor_id) { 502 case 0: 503 case 2: 504 w8001->pktlen = W8001_PKTLEN_TOUCH93; 505 w8001->id = 0x93; 506 strlcat(basename, " 1FG", basename_sz); 507 break; 508 509 case 1: 510 case 3: 511 case 4: 512 w8001->pktlen = W8001_PKTLEN_TOUCH9A; 513 strlcat(basename, " 1FG", basename_sz); 514 w8001->id = 0x9a; 515 break; 516 517 case 5: 518 w8001->pktlen = W8001_PKTLEN_TOUCH2FG; 519 520 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 521 error = input_mt_init_slots(dev, 2, 0); 522 if (error) { 523 dev_err(&w8001->serio->dev, 524 "failed to initialize MT slots: %d\n", error); 525 return error; 526 } 527 528 input_set_abs_params(dev, ABS_MT_POSITION_X, 529 0, touch.x, 0, 0); 530 input_set_abs_params(dev, ABS_MT_POSITION_Y, 531 0, touch.y, 0, 0); 532 input_set_abs_params(dev, ABS_MT_TOOL_TYPE, 533 0, MT_TOOL_MAX, 0, 0); 534 input_abs_set_res(dev, ABS_MT_POSITION_X, touch.panel_res); 535 input_abs_set_res(dev, ABS_MT_POSITION_Y, touch.panel_res); 536 537 strlcat(basename, " 2FG", basename_sz); 538 if (w8001->max_pen_x && w8001->max_pen_y) 539 w8001->id = 0xE3; 540 else 541 w8001->id = 0xE2; 542 break; 543 } 544 545 strlcat(basename, " Touchscreen", basename_sz); 546 547 return 0; 548 } 549 550 static void w8001_set_devdata(struct input_dev *dev, struct w8001 *w8001, 551 struct serio *serio) 552 { 553 dev->phys = w8001->phys; 554 dev->id.bustype = BUS_RS232; 555 dev->id.product = w8001->id; 556 dev->id.vendor = 0x056a; 557 dev->id.version = 0x0100; 558 dev->open = w8001_open; 559 dev->close = w8001_close; 560 561 dev->dev.parent = &serio->dev; 562 563 input_set_drvdata(dev, w8001); 564 } 565 566 /* 567 * w8001_disconnect() is the opposite of w8001_connect() 568 */ 569 570 static void w8001_disconnect(struct serio *serio) 571 { 572 struct w8001 *w8001 = serio_get_drvdata(serio); 573 574 serio_close(serio); 575 576 if (w8001->pen_dev) 577 input_unregister_device(w8001->pen_dev); 578 if (w8001->touch_dev) 579 input_unregister_device(w8001->touch_dev); 580 kfree(w8001); 581 582 serio_set_drvdata(serio, NULL); 583 } 584 585 /* 586 * w8001_connect() is the routine that is called when someone adds a 587 * new serio device that supports the w8001 protocol and registers it as 588 * an input device. 589 */ 590 591 static int w8001_connect(struct serio *serio, struct serio_driver *drv) 592 { 593 struct w8001 *w8001; 594 struct input_dev *input_dev_pen; 595 struct input_dev *input_dev_touch; 596 char basename[64]; 597 int err, err_pen, err_touch; 598 599 w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL); 600 input_dev_pen = input_allocate_device(); 601 input_dev_touch = input_allocate_device(); 602 if (!w8001 || !input_dev_pen || !input_dev_touch) { 603 err = -ENOMEM; 604 goto fail1; 605 } 606 607 w8001->serio = serio; 608 w8001->pen_dev = input_dev_pen; 609 w8001->touch_dev = input_dev_touch; 610 mutex_init(&w8001->mutex); 611 init_completion(&w8001->cmd_done); 612 snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys); 613 614 serio_set_drvdata(serio, w8001); 615 err = serio_open(serio, drv); 616 if (err) 617 goto fail2; 618 619 err = w8001_detect(w8001); 620 if (err) 621 goto fail3; 622 623 /* For backwards-compatibility we compose the basename based on 624 * capabilities and then just append the tool type 625 */ 626 strlcpy(basename, "Wacom Serial", sizeof(basename)); 627 628 err_pen = w8001_setup_pen(w8001, basename, sizeof(basename)); 629 err_touch = w8001_setup_touch(w8001, basename, sizeof(basename)); 630 if (err_pen && err_touch) { 631 err = -ENXIO; 632 goto fail3; 633 } 634 635 if (!err_pen) { 636 strlcpy(w8001->pen_name, basename, sizeof(w8001->pen_name)); 637 strlcat(w8001->pen_name, " Pen", sizeof(w8001->pen_name)); 638 input_dev_pen->name = w8001->pen_name; 639 640 w8001_set_devdata(input_dev_pen, w8001, serio); 641 642 err = input_register_device(w8001->pen_dev); 643 if (err) 644 goto fail3; 645 } else { 646 input_free_device(input_dev_pen); 647 input_dev_pen = NULL; 648 w8001->pen_dev = NULL; 649 } 650 651 if (!err_touch) { 652 strlcpy(w8001->touch_name, basename, sizeof(w8001->touch_name)); 653 strlcat(w8001->touch_name, " Finger", 654 sizeof(w8001->touch_name)); 655 input_dev_touch->name = w8001->touch_name; 656 657 w8001_set_devdata(input_dev_touch, w8001, serio); 658 659 err = input_register_device(w8001->touch_dev); 660 if (err) 661 goto fail4; 662 } else { 663 input_free_device(input_dev_touch); 664 input_dev_touch = NULL; 665 w8001->touch_dev = NULL; 666 } 667 668 return 0; 669 670 fail4: 671 if (w8001->pen_dev) 672 input_unregister_device(w8001->pen_dev); 673 fail3: 674 serio_close(serio); 675 fail2: 676 serio_set_drvdata(serio, NULL); 677 fail1: 678 input_free_device(input_dev_pen); 679 input_free_device(input_dev_touch); 680 kfree(w8001); 681 return err; 682 } 683 684 static const struct serio_device_id w8001_serio_ids[] = { 685 { 686 .type = SERIO_RS232, 687 .proto = SERIO_W8001, 688 .id = SERIO_ANY, 689 .extra = SERIO_ANY, 690 }, 691 { 0 } 692 }; 693 694 MODULE_DEVICE_TABLE(serio, w8001_serio_ids); 695 696 static struct serio_driver w8001_drv = { 697 .driver = { 698 .name = "w8001", 699 }, 700 .description = DRIVER_DESC, 701 .id_table = w8001_serio_ids, 702 .interrupt = w8001_interrupt, 703 .connect = w8001_connect, 704 .disconnect = w8001_disconnect, 705 }; 706 707 module_serio_driver(w8001_drv); 708