1/* 2 * Apple USB Touchpad (for post-February 2005 PowerBooks and MacBooks) driver 3 * 4 * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) 5 * Copyright (C) 2005 Johannes Berg (johannes@sipsolutions.net) 6 * Copyright (C) 2005 Stelian Pop (stelian@popies.net) 7 * Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de) 8 * Copyright (C) 2005 Peter Osterlund (petero2@telia.com) 9 * Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch) 10 * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch) 11 * 12 * Thanks to Alex Harper <basilisk@foobox.net> for his inputs. 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 * 28 */ 29 30#include <linux/kernel.h> 31#include <linux/errno.h> 32#include <linux/init.h> 33#include <linux/slab.h> 34#include <linux/module.h> 35#include <linux/usb/input.h> 36 37/* Apple has powerbooks which have the keyboard with different Product IDs */ 38#define APPLE_VENDOR_ID 0x05AC 39 40/* These names come from Info.plist in AppleUSBTrackpad.kext */ 41#define FOUNTAIN_ANSI_PRODUCT_ID 0x020E 42#define FOUNTAIN_ISO_PRODUCT_ID 0x020F 43 44#define FOUNTAIN_TP_ONLY_PRODUCT_ID 0x030A 45 46#define GEYSER1_TP_ONLY_PRODUCT_ID 0x030B 47 48#define GEYSER_ANSI_PRODUCT_ID 0x0214 49#define GEYSER_ISO_PRODUCT_ID 0x0215 50#define GEYSER_JIS_PRODUCT_ID 0x0216 51 52/* MacBook devices */ 53#define GEYSER3_ANSI_PRODUCT_ID 0x0217 54#define GEYSER3_ISO_PRODUCT_ID 0x0218 55#define GEYSER3_JIS_PRODUCT_ID 0x0219 56 57/* 58 * Geyser IV: same as Geyser III according to Info.plist in AppleUSBTrackpad.kext 59 * -> same IOClass (AppleUSBGrIIITrackpad), same acceleration tables 60 */ 61#define GEYSER4_ANSI_PRODUCT_ID 0x021A 62#define GEYSER4_ISO_PRODUCT_ID 0x021B 63#define GEYSER4_JIS_PRODUCT_ID 0x021C 64 65#define ATP_DEVICE(prod) \ 66 .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ 67 USB_DEVICE_ID_MATCH_INT_CLASS | \ 68 USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ 69 .idVendor = APPLE_VENDOR_ID, \ 70 .idProduct = (prod), \ 71 .bInterfaceClass = 0x03, \ 72 .bInterfaceProtocol = 0x02 73 74/* table of devices that work with this driver */ 75static struct usb_device_id atp_table [] = { 76 { ATP_DEVICE(FOUNTAIN_ANSI_PRODUCT_ID) }, 77 { ATP_DEVICE(FOUNTAIN_ISO_PRODUCT_ID) }, 78 { ATP_DEVICE(FOUNTAIN_TP_ONLY_PRODUCT_ID) }, 79 { ATP_DEVICE(GEYSER1_TP_ONLY_PRODUCT_ID) }, 80 81 /* PowerBooks Oct 2005 */ 82 { ATP_DEVICE(GEYSER_ANSI_PRODUCT_ID) }, 83 { ATP_DEVICE(GEYSER_ISO_PRODUCT_ID) }, 84 { ATP_DEVICE(GEYSER_JIS_PRODUCT_ID) }, 85 86 /* Core Duo MacBook & MacBook Pro */ 87 { ATP_DEVICE(GEYSER3_ANSI_PRODUCT_ID) }, 88 { ATP_DEVICE(GEYSER3_ISO_PRODUCT_ID) }, 89 { ATP_DEVICE(GEYSER3_JIS_PRODUCT_ID) }, 90 91 /* Core2 Duo MacBook & MacBook Pro */ 92 { ATP_DEVICE(GEYSER4_ANSI_PRODUCT_ID) }, 93 { ATP_DEVICE(GEYSER4_ISO_PRODUCT_ID) }, 94 { ATP_DEVICE(GEYSER4_JIS_PRODUCT_ID) }, 95 96 /* Terminating entry */ 97 { } 98}; 99MODULE_DEVICE_TABLE (usb, atp_table); 100 101/* 102 * number of sensors. Note that only 16 instead of 26 X (horizontal) 103 * sensors exist on 12" and 15" PowerBooks. All models have 16 Y 104 * (vertical) sensors. 105 */ 106#define ATP_XSENSORS 26 107#define ATP_YSENSORS 16 108 109/* amount of fuzz this touchpad generates */ 110#define ATP_FUZZ 16 111 112/* maximum pressure this driver will report */ 113#define ATP_PRESSURE 300 114/* 115 * multiplication factor for the X and Y coordinates. 116 * We try to keep the touchpad aspect ratio while still doing only simple 117 * arithmetics. 118 * The factors below give coordinates like: 119 * 0 <= x < 960 on 12" and 15" Powerbooks 120 * 0 <= x < 1600 on 17" Powerbooks 121 * 0 <= y < 646 122 */ 123#define ATP_XFACT 64 124#define ATP_YFACT 43 125 126/* 127 * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is 128 * ignored. 129 */ 130#define ATP_THRESHOLD 5 131 132/* MacBook Pro (Geyser 3 & 4) initialization constants */ 133#define ATP_GEYSER3_MODE_READ_REQUEST_ID 1 134#define ATP_GEYSER3_MODE_WRITE_REQUEST_ID 9 135#define ATP_GEYSER3_MODE_REQUEST_VALUE 0x300 136#define ATP_GEYSER3_MODE_REQUEST_INDEX 0 137#define ATP_GEYSER3_MODE_VENDOR_VALUE 0x04 138 139/* Structure to hold all of our device specific stuff */ 140struct atp { 141 char phys[64]; 142 struct usb_device * udev; /* usb device */ 143 struct urb * urb; /* usb request block */ 144 signed char * data; /* transferred data */ 145 int open; /* non-zero if opened */ 146 struct input_dev *input; /* input dev */ 147 int valid; /* are the sensors valid ? */ 148 int x_old; /* last reported x/y, */ 149 int y_old; /* used for smoothing */ 150 /* current value of the sensors */ 151 signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; 152 /* last value of the sensors */ 153 signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; 154 /* accumulated sensors */ 155 int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; 156 int overflowwarn; /* overflow warning printed? */ 157 int datalen; /* size of an USB urb transfer */ 158}; 159 160#define dbg_dump(msg, tab) \ 161 if (debug > 1) { \ 162 int i; \ 163 printk("appletouch: %s %lld", msg, (long long)jiffies); \ 164 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) \ 165 printk(" %02x", tab[i]); \ 166 printk("\n"); \ 167 } 168 169#define dprintk(format, a...) \ 170 do { \ 171 if (debug) printk(format, ##a); \ 172 } while (0) 173 174MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann"); 175MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver"); 176MODULE_LICENSE("GPL"); 177 178/* 179 * Make the threshold a module parameter 180 */ 181static int threshold = ATP_THRESHOLD; 182module_param(threshold, int, 0644); 183MODULE_PARM_DESC(threshold, "Discards any change in data from a sensor (trackpad has hundreds of these sensors) less than this value"); 184 185static int debug = 1; 186module_param(debug, int, 0644); 187MODULE_PARM_DESC(debug, "Activate debugging output"); 188 189/* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */ 190static inline int atp_is_geyser_2(struct atp *dev) 191{ 192 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); 193 194 return (productId == GEYSER_ANSI_PRODUCT_ID) || 195 (productId == GEYSER_ISO_PRODUCT_ID) || 196 (productId == GEYSER_JIS_PRODUCT_ID); 197} 198 199static inline int atp_is_geyser_3(struct atp *dev) 200{ 201 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); 202 203 return (productId == GEYSER3_ANSI_PRODUCT_ID) || 204 (productId == GEYSER3_ISO_PRODUCT_ID) || 205 (productId == GEYSER3_JIS_PRODUCT_ID) || 206 (productId == GEYSER4_ANSI_PRODUCT_ID) || 207 (productId == GEYSER4_ISO_PRODUCT_ID) || 208 (productId == GEYSER4_JIS_PRODUCT_ID); 209} 210 211static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, 212 int *z, int *fingers) 213{ 214 int i; 215 /* values to calculate mean */ 216 int pcum = 0, psum = 0; 217 int is_increasing = 0; 218 219 *fingers = 0; 220 221 for (i = 0; i < nb_sensors; i++) { 222 if (xy_sensors[i] < threshold) { 223 if (is_increasing) 224 is_increasing = 0; 225 226 continue; 227 } 228 229 /* 230 * Makes the finger detection more versatile. For example, 231 * two fingers with no gap will be detected. Also, my 232 * tests show it less likely to have intermittent loss 233 * of multiple finger readings while moving around (scrolling). 234 * 235 * Changes the multiple finger detection to counting humps on 236 * sensors (transitions from nonincreasing to increasing) 237 * instead of counting transitions from low sensors (no 238 * finger reading) to high sensors (finger above 239 * sensor) 240 * 241 * - Jason Parekh <jasonparekh@gmail.com> 242 */ 243 if (i < 1 || (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { 244 (*fingers)++; 245 is_increasing = 1; 246 } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) { 247 is_increasing = 0; 248 } 249 250 /* 251 * Subtracts threshold so a high sensor that just passes the threshold 252 * won't skew the calculated absolute coordinate. Fixes an issue 253 * where slowly moving the mouse would occassionaly jump a number of 254 * pixels (let me restate--slowly moving the mouse makes this issue 255 * most apparent). 256 */ 257 pcum += (xy_sensors[i] - threshold) * i; 258 psum += (xy_sensors[i] - threshold); 259 } 260 261 if (psum > 0) { 262 *z = psum; 263 return pcum * fact / psum; 264 } 265 266 return 0; 267} 268 269static inline void atp_report_fingers(struct input_dev *input, int fingers) 270{ 271 input_report_key(input, BTN_TOOL_FINGER, fingers == 1); 272 input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); 273 input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); 274} 275 276static void atp_complete(struct urb* urb) 277{ 278 int x, y, x_z, y_z, x_f, y_f; 279 int retval, i, j; 280 struct atp *dev = urb->context; 281 282 switch (urb->status) { 283 case 0: 284 /* success */ 285 break; 286 case -EOVERFLOW: 287 if(!dev->overflowwarn) { 288 printk("appletouch: OVERFLOW with data " 289 "length %d, actual length is %d\n", 290 dev->datalen, dev->urb->actual_length); 291 dev->overflowwarn = 1; 292 } 293 case -ECONNRESET: 294 case -ENOENT: 295 case -ESHUTDOWN: 296 /* This urb is terminated, clean up */ 297 dbg("%s - urb shutting down with status: %d", 298 __FUNCTION__, urb->status); 299 return; 300 default: 301 dbg("%s - nonzero urb status received: %d", 302 __FUNCTION__, urb->status); 303 goto exit; 304 } 305 306 /* drop incomplete datasets */ 307 if (dev->urb->actual_length != dev->datalen) { 308 dprintk("appletouch: incomplete data package" 309 " (first byte: %d, length: %d).\n", 310 dev->data[0], dev->urb->actual_length); 311 goto exit; 312 } 313 314 /* reorder the sensors values */ 315 if (atp_is_geyser_3(dev)) { 316 memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); 317 318 /* 319 * The values are laid out like this: 320 * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... 321 * '-' is an unused value. 322 */ 323 324 /* read X values */ 325 for (i = 0, j = 19; i < 20; i += 2, j += 3) { 326 dev->xy_cur[i] = dev->data[j + 1]; 327 dev->xy_cur[i + 1] = dev->data[j + 2]; 328 } 329 /* read Y values */ 330 for (i = 0, j = 1; i < 9; i += 2, j += 3) { 331 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; 332 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; 333 } 334 } else if (atp_is_geyser_2(dev)) { 335 memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); 336 337 /* 338 * The values are laid out like this: 339 * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... 340 * '-' is an unused value. 341 */ 342 343 /* read X values */ 344 for (i = 0, j = 19; i < 20; i += 2, j += 3) { 345 dev->xy_cur[i] = dev->data[j]; 346 dev->xy_cur[i + 1] = dev->data[j + 1]; 347 } 348 349 /* read Y values */ 350 for (i = 0, j = 1; i < 9; i += 2, j += 3) { 351 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; 352 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; 353 } 354 } else { 355 for (i = 0; i < 8; i++) { 356 /* X values */ 357 dev->xy_cur[i ] = dev->data[5 * i + 2]; 358 dev->xy_cur[i + 8] = dev->data[5 * i + 4]; 359 dev->xy_cur[i + 16] = dev->data[5 * i + 42]; 360 if (i < 2) 361 dev->xy_cur[i + 24] = dev->data[5 * i + 44]; 362 363 /* Y values */ 364 dev->xy_cur[i + 26] = dev->data[5 * i + 1]; 365 dev->xy_cur[i + 34] = dev->data[5 * i + 3]; 366 } 367 } 368 369 dbg_dump("sample", dev->xy_cur); 370 371 if (!dev->valid) { 372 /* first sample */ 373 dev->valid = 1; 374 dev->x_old = dev->y_old = -1; 375 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); 376 377 if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ 378 goto exit; 379 380 /* 17" Powerbooks have extra X sensors */ 381 for (i = (atp_is_geyser_2(dev)?15:16); i < ATP_XSENSORS; i++) { 382 if (!dev->xy_cur[i]) continue; 383 384 printk("appletouch: 17\" model detected.\n"); 385 if(atp_is_geyser_2(dev)) 386 input_set_abs_params(dev->input, ABS_X, 0, 387 (20 - 1) * 388 ATP_XFACT - 1, 389 ATP_FUZZ, 0); 390 else 391 input_set_abs_params(dev->input, ABS_X, 0, 392 (ATP_XSENSORS - 1) * 393 ATP_XFACT - 1, 394 ATP_FUZZ, 0); 395 396 break; 397 } 398 399 goto exit; 400 } 401 402 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { 403 /* accumulate the change */ 404 signed char change = dev->xy_old[i] - dev->xy_cur[i]; 405 dev->xy_acc[i] -= change; 406 407 /* prevent down drifting */ 408 if (dev->xy_acc[i] < 0) 409 dev->xy_acc[i] = 0; 410 } 411 412 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); 413 414 dbg_dump("accumulator", dev->xy_acc); 415 416 x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, 417 ATP_XFACT, &x_z, &x_f); 418 y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, 419 ATP_YFACT, &y_z, &y_f); 420 421 if (x && y) { 422 if (dev->x_old != -1) { 423 x = (dev->x_old * 3 + x) >> 2; 424 y = (dev->y_old * 3 + y) >> 2; 425 dev->x_old = x; 426 dev->y_old = y; 427 428 if (debug > 1) 429 printk("appletouch: X: %3d Y: %3d " 430 "Xz: %3d Yz: %3d\n", 431 x, y, x_z, y_z); 432 433 input_report_key(dev->input, BTN_TOUCH, 1); 434 input_report_abs(dev->input, ABS_X, x); 435 input_report_abs(dev->input, ABS_Y, y); 436 input_report_abs(dev->input, ABS_PRESSURE, 437 min(ATP_PRESSURE, x_z + y_z)); 438 atp_report_fingers(dev->input, max(x_f, y_f)); 439 } 440 dev->x_old = x; 441 dev->y_old = y; 442 } 443 else if (!x && !y) { 444 445 dev->x_old = dev->y_old = -1; 446 input_report_key(dev->input, BTN_TOUCH, 0); 447 input_report_abs(dev->input, ABS_PRESSURE, 0); 448 atp_report_fingers(dev->input, 0); 449 450 /* reset the accumulator on release */ 451 memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); 452 } 453 454 input_report_key(dev->input, BTN_LEFT, 455 !!dev->data[dev->datalen - 1]); 456 457 input_sync(dev->input); 458 459exit: 460 retval = usb_submit_urb(dev->urb, GFP_ATOMIC); 461 if (retval) { 462 err("%s - usb_submit_urb failed with result %d", 463 __FUNCTION__, retval); 464 } 465} 466 467static int atp_open(struct input_dev *input) 468{ 469 struct atp *dev = input_get_drvdata(input); 470 471 if (usb_submit_urb(dev->urb, GFP_ATOMIC)) 472 return -EIO; 473 474 dev->open = 1; 475 return 0; 476} 477 478static void atp_close(struct input_dev *input) 479{ 480 struct atp *dev = input_get_drvdata(input); 481 482 usb_kill_urb(dev->urb); 483 dev->open = 0; 484} 485 486static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id) 487{ 488 struct atp *dev; 489 struct input_dev *input_dev; 490 struct usb_device *udev = interface_to_usbdev(iface); 491 struct usb_host_interface *iface_desc; 492 struct usb_endpoint_descriptor *endpoint; 493 int int_in_endpointAddr = 0; 494 int i, error = -ENOMEM; 495 496 /* set up the endpoint information */ 497 /* use only the first interrupt-in endpoint */ 498 iface_desc = iface->cur_altsetting; 499 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 500 endpoint = &iface_desc->endpoint[i].desc; 501 if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { 502 /* we found an interrupt in endpoint */ 503 int_in_endpointAddr = endpoint->bEndpointAddress; 504 break; 505 } 506 } 507 if (!int_in_endpointAddr) { 508 err("Could not find int-in endpoint"); 509 return -EIO; 510 } 511 512 /* allocate memory for our device state and initialize it */ 513 dev = kzalloc(sizeof(struct atp), GFP_KERNEL); 514 input_dev = input_allocate_device(); 515 if (!dev || !input_dev) { 516 err("Out of memory"); 517 goto err_free_devs; 518 } 519 520 dev->udev = udev; 521 dev->input = input_dev; 522 dev->overflowwarn = 0; 523 if (atp_is_geyser_3(dev)) 524 dev->datalen = 64; 525 else if (atp_is_geyser_2(dev)) 526 dev->datalen = 64; 527 else 528 dev->datalen = 81; 529 530 if (atp_is_geyser_3(dev)) { 531 /* 532 * By default Geyser 3 device sends standard USB HID mouse 533 * packets (Report ID 2). This code changes device mode, so it 534 * sends raw sensor reports (Report ID 5). 535 */ 536 char data[8]; 537 int size; 538 539 size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 540 ATP_GEYSER3_MODE_READ_REQUEST_ID, 541 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 542 ATP_GEYSER3_MODE_REQUEST_VALUE, 543 ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); 544 545 if (size != 8) { 546 err("Could not do mode read request from device" 547 " (Geyser 3 mode)"); 548 goto err_free_devs; 549 } 550 551 /* Apply the mode switch */ 552 data[0] = ATP_GEYSER3_MODE_VENDOR_VALUE; 553 554 size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 555 ATP_GEYSER3_MODE_WRITE_REQUEST_ID, 556 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 557 ATP_GEYSER3_MODE_REQUEST_VALUE, 558 ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); 559 560 if (size != 8) { 561 err("Could not do mode write request to device" 562 " (Geyser 3 mode)"); 563 goto err_free_devs; 564 } 565 printk("appletouch Geyser 3 inited.\n"); 566 } 567 568 dev->urb = usb_alloc_urb(0, GFP_KERNEL); 569 if (!dev->urb) 570 goto err_free_devs; 571 572 dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, 573 &dev->urb->transfer_dma); 574 if (!dev->data) 575 goto err_free_urb; 576 577 usb_fill_int_urb(dev->urb, udev, 578 usb_rcvintpipe(udev, int_in_endpointAddr), 579 dev->data, dev->datalen, atp_complete, dev, 1); 580 581 usb_make_path(udev, dev->phys, sizeof(dev->phys)); 582 strlcat(dev->phys, "/input0", sizeof(dev->phys)); 583 584 input_dev->name = "appletouch"; 585 input_dev->phys = dev->phys; 586 usb_to_input_id(dev->udev, &input_dev->id); 587 input_dev->dev.parent = &iface->dev; 588 589 input_set_drvdata(input_dev, dev); 590 591 input_dev->open = atp_open; 592 input_dev->close = atp_close; 593 594 set_bit(EV_ABS, input_dev->evbit); 595 596 if (atp_is_geyser_3(dev)) { 597 /* 598 * MacBook have 20 X sensors, 10 Y sensors 599 */ 600 input_set_abs_params(input_dev, ABS_X, 0, 601 ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); 602 input_set_abs_params(input_dev, ABS_Y, 0, 603 ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); 604 } else if (atp_is_geyser_2(dev)) { 605 /* 606 * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected 607 * later. 608 */ 609 input_set_abs_params(input_dev, ABS_X, 0, 610 ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); 611 input_set_abs_params(input_dev, ABS_Y, 0, 612 ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); 613 } else { 614 /* 615 * 12" and 15" Powerbooks only have 16 x sensors, 616 * 17" models are detected later. 617 */ 618 input_set_abs_params(input_dev, ABS_X, 0, 619 (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); 620 input_set_abs_params(input_dev, ABS_Y, 0, 621 (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0); 622 } 623 input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); 624 625 set_bit(EV_KEY, input_dev->evbit); 626 set_bit(BTN_TOUCH, input_dev->keybit); 627 set_bit(BTN_TOOL_FINGER, input_dev->keybit); 628 set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); 629 set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); 630 set_bit(BTN_LEFT, input_dev->keybit); 631 632 error = input_register_device(dev->input); 633 if (error) 634 goto err_free_buffer; 635 636 /* save our data pointer in this interface device */ 637 usb_set_intfdata(iface, dev); 638 639 return 0; 640 641 err_free_buffer: 642 usb_buffer_free(dev->udev, dev->datalen, 643 dev->data, dev->urb->transfer_dma); 644 err_free_urb: 645 usb_free_urb(dev->urb); 646 err_free_devs: 647 usb_set_intfdata(iface, NULL); 648 kfree(dev); 649 input_free_device(input_dev); 650 return error; 651} 652 653static void atp_disconnect(struct usb_interface *iface) 654{ 655 struct atp *dev = usb_get_intfdata(iface); 656 657 usb_set_intfdata(iface, NULL); 658 if (dev) { 659 usb_kill_urb(dev->urb); 660 input_unregister_device(dev->input); 661 usb_buffer_free(dev->udev, dev->datalen, 662 dev->data, dev->urb->transfer_dma); 663 usb_free_urb(dev->urb); 664 kfree(dev); 665 } 666 printk(KERN_INFO "input: appletouch disconnected\n"); 667} 668 669static int atp_suspend(struct usb_interface *iface, pm_message_t message) 670{ 671 struct atp *dev = usb_get_intfdata(iface); 672 usb_kill_urb(dev->urb); 673 dev->valid = 0; 674 return 0; 675} 676 677static int atp_resume(struct usb_interface *iface) 678{ 679 struct atp *dev = usb_get_intfdata(iface); 680 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) 681 return -EIO; 682 683 return 0; 684} 685 686static struct usb_driver atp_driver = { 687 .name = "appletouch", 688 .probe = atp_probe, 689 .disconnect = atp_disconnect, 690 .suspend = atp_suspend, 691 .resume = atp_resume, 692 .id_table = atp_table, 693}; 694 695static int __init atp_init(void) 696{ 697 return usb_register(&atp_driver); 698} 699 700static void __exit atp_exit(void) 701{ 702 usb_deregister(&atp_driver); 703} 704 705module_init(atp_init); 706module_exit(atp_exit); 707