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 */ 75 static 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 }; 99 MODULE_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 */ 140 struct 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 int idlecount; /* number of empty packets */ 159 struct work_struct work; 160 }; 161 162 #define dbg_dump(msg, tab) \ 163 if (debug > 1) { \ 164 int i; \ 165 printk("appletouch: %s %lld", msg, (long long)jiffies); \ 166 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) \ 167 printk(" %02x", tab[i]); \ 168 printk("\n"); \ 169 } 170 171 #define dprintk(format, a...) \ 172 do { \ 173 if (debug) printk(format, ##a); \ 174 } while (0) 175 176 MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann"); 177 MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver"); 178 MODULE_LICENSE("GPL"); 179 180 /* 181 * Make the threshold a module parameter 182 */ 183 static int threshold = ATP_THRESHOLD; 184 module_param(threshold, int, 0644); 185 MODULE_PARM_DESC(threshold, "Discards any change in data from a sensor (trackpad has hundreds of these sensors) less than this value"); 186 187 static int debug = 1; 188 module_param(debug, int, 0644); 189 MODULE_PARM_DESC(debug, "Activate debugging output"); 190 191 /* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */ 192 static inline int atp_is_geyser_2(struct atp *dev) 193 { 194 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); 195 196 return (productId == GEYSER_ANSI_PRODUCT_ID) || 197 (productId == GEYSER_ISO_PRODUCT_ID) || 198 (productId == GEYSER_JIS_PRODUCT_ID); 199 } 200 201 static inline int atp_is_geyser_3(struct atp *dev) 202 { 203 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); 204 205 return (productId == GEYSER3_ANSI_PRODUCT_ID) || 206 (productId == GEYSER3_ISO_PRODUCT_ID) || 207 (productId == GEYSER3_JIS_PRODUCT_ID) || 208 (productId == GEYSER4_ANSI_PRODUCT_ID) || 209 (productId == GEYSER4_ISO_PRODUCT_ID) || 210 (productId == GEYSER4_JIS_PRODUCT_ID); 211 } 212 213 /* 214 * By default Geyser 3 device sends standard USB HID mouse 215 * packets (Report ID 2). This code changes device mode, so it 216 * sends raw sensor reports (Report ID 5). 217 */ 218 static int atp_geyser3_init(struct usb_device *udev) 219 { 220 char data[8]; 221 int size; 222 223 size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 224 ATP_GEYSER3_MODE_READ_REQUEST_ID, 225 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 226 ATP_GEYSER3_MODE_REQUEST_VALUE, 227 ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); 228 229 if (size != 8) { 230 err("Could not do mode read request from device" 231 " (Geyser 3 mode)"); 232 return -EIO; 233 } 234 235 /* Apply the mode switch */ 236 data[0] = ATP_GEYSER3_MODE_VENDOR_VALUE; 237 238 size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 239 ATP_GEYSER3_MODE_WRITE_REQUEST_ID, 240 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 241 ATP_GEYSER3_MODE_REQUEST_VALUE, 242 ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); 243 244 if (size != 8) { 245 err("Could not do mode write request to device" 246 " (Geyser 3 mode)"); 247 return -EIO; 248 } 249 return 0; 250 } 251 252 /* Reinitialise the device if it's a geyser 3 */ 253 static void atp_reinit(struct work_struct *work) 254 { 255 struct atp *dev = container_of(work, struct atp, work); 256 struct usb_device *udev = dev->udev; 257 258 dev->idlecount = 0; 259 atp_geyser3_init(udev); 260 } 261 262 static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, 263 int *z, int *fingers) 264 { 265 int i; 266 /* values to calculate mean */ 267 int pcum = 0, psum = 0; 268 int is_increasing = 0; 269 270 *fingers = 0; 271 272 for (i = 0; i < nb_sensors; i++) { 273 if (xy_sensors[i] < threshold) { 274 if (is_increasing) 275 is_increasing = 0; 276 277 continue; 278 } 279 280 /* 281 * Makes the finger detection more versatile. For example, 282 * two fingers with no gap will be detected. Also, my 283 * tests show it less likely to have intermittent loss 284 * of multiple finger readings while moving around (scrolling). 285 * 286 * Changes the multiple finger detection to counting humps on 287 * sensors (transitions from nonincreasing to increasing) 288 * instead of counting transitions from low sensors (no 289 * finger reading) to high sensors (finger above 290 * sensor) 291 * 292 * - Jason Parekh <jasonparekh@gmail.com> 293 */ 294 if (i < 1 || (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { 295 (*fingers)++; 296 is_increasing = 1; 297 } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) { 298 is_increasing = 0; 299 } 300 301 /* 302 * Subtracts threshold so a high sensor that just passes the threshold 303 * won't skew the calculated absolute coordinate. Fixes an issue 304 * where slowly moving the mouse would occassionaly jump a number of 305 * pixels (let me restate--slowly moving the mouse makes this issue 306 * most apparent). 307 */ 308 pcum += (xy_sensors[i] - threshold) * i; 309 psum += (xy_sensors[i] - threshold); 310 } 311 312 if (psum > 0) { 313 *z = psum; 314 return pcum * fact / psum; 315 } 316 317 return 0; 318 } 319 320 static inline void atp_report_fingers(struct input_dev *input, int fingers) 321 { 322 input_report_key(input, BTN_TOOL_FINGER, fingers == 1); 323 input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); 324 input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); 325 } 326 327 static void atp_complete(struct urb* urb) 328 { 329 int x, y, x_z, y_z, x_f, y_f; 330 int retval, i, j; 331 int key; 332 struct atp *dev = urb->context; 333 334 switch (urb->status) { 335 case 0: 336 /* success */ 337 break; 338 case -EOVERFLOW: 339 if(!dev->overflowwarn) { 340 printk("appletouch: OVERFLOW with data " 341 "length %d, actual length is %d\n", 342 dev->datalen, dev->urb->actual_length); 343 dev->overflowwarn = 1; 344 } 345 case -ECONNRESET: 346 case -ENOENT: 347 case -ESHUTDOWN: 348 /* This urb is terminated, clean up */ 349 dbg("%s - urb shutting down with status: %d", 350 __FUNCTION__, urb->status); 351 return; 352 default: 353 dbg("%s - nonzero urb status received: %d", 354 __FUNCTION__, urb->status); 355 goto exit; 356 } 357 358 /* drop incomplete datasets */ 359 if (dev->urb->actual_length != dev->datalen) { 360 dprintk("appletouch: incomplete data package" 361 " (first byte: %d, length: %d).\n", 362 dev->data[0], dev->urb->actual_length); 363 goto exit; 364 } 365 366 /* reorder the sensors values */ 367 if (atp_is_geyser_3(dev)) { 368 memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); 369 370 /* 371 * The values are laid out like this: 372 * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... 373 * '-' is an unused value. 374 */ 375 376 /* read X values */ 377 for (i = 0, j = 19; i < 20; i += 2, j += 3) { 378 dev->xy_cur[i] = dev->data[j + 1]; 379 dev->xy_cur[i + 1] = dev->data[j + 2]; 380 } 381 /* read Y values */ 382 for (i = 0, j = 1; i < 9; i += 2, j += 3) { 383 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; 384 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; 385 } 386 } else if (atp_is_geyser_2(dev)) { 387 memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); 388 389 /* 390 * The values are laid out like this: 391 * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... 392 * '-' is an unused value. 393 */ 394 395 /* read X values */ 396 for (i = 0, j = 19; i < 20; i += 2, j += 3) { 397 dev->xy_cur[i] = dev->data[j]; 398 dev->xy_cur[i + 1] = dev->data[j + 1]; 399 } 400 401 /* read Y values */ 402 for (i = 0, j = 1; i < 9; i += 2, j += 3) { 403 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; 404 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; 405 } 406 } else { 407 for (i = 0; i < 8; i++) { 408 /* X values */ 409 dev->xy_cur[i ] = dev->data[5 * i + 2]; 410 dev->xy_cur[i + 8] = dev->data[5 * i + 4]; 411 dev->xy_cur[i + 16] = dev->data[5 * i + 42]; 412 if (i < 2) 413 dev->xy_cur[i + 24] = dev->data[5 * i + 44]; 414 415 /* Y values */ 416 dev->xy_cur[i + 26] = dev->data[5 * i + 1]; 417 dev->xy_cur[i + 34] = dev->data[5 * i + 3]; 418 } 419 } 420 421 dbg_dump("sample", dev->xy_cur); 422 423 if (!dev->valid) { 424 /* first sample */ 425 dev->valid = 1; 426 dev->x_old = dev->y_old = -1; 427 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); 428 429 if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ 430 goto exit; 431 432 /* 17" Powerbooks have extra X sensors */ 433 for (i = (atp_is_geyser_2(dev)?15:16); i < ATP_XSENSORS; i++) { 434 if (!dev->xy_cur[i]) continue; 435 436 printk("appletouch: 17\" model detected.\n"); 437 if(atp_is_geyser_2(dev)) 438 input_set_abs_params(dev->input, ABS_X, 0, 439 (20 - 1) * 440 ATP_XFACT - 1, 441 ATP_FUZZ, 0); 442 else 443 input_set_abs_params(dev->input, ABS_X, 0, 444 (ATP_XSENSORS - 1) * 445 ATP_XFACT - 1, 446 ATP_FUZZ, 0); 447 448 break; 449 } 450 451 goto exit; 452 } 453 454 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { 455 /* accumulate the change */ 456 signed char change = dev->xy_old[i] - dev->xy_cur[i]; 457 dev->xy_acc[i] -= change; 458 459 /* prevent down drifting */ 460 if (dev->xy_acc[i] < 0) 461 dev->xy_acc[i] = 0; 462 } 463 464 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); 465 466 dbg_dump("accumulator", dev->xy_acc); 467 468 x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, 469 ATP_XFACT, &x_z, &x_f); 470 y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, 471 ATP_YFACT, &y_z, &y_f); 472 key = dev->data[dev->datalen - 1] & 1; 473 474 if (x && y) { 475 if (dev->x_old != -1) { 476 x = (dev->x_old * 3 + x) >> 2; 477 y = (dev->y_old * 3 + y) >> 2; 478 dev->x_old = x; 479 dev->y_old = y; 480 481 if (debug > 1) 482 printk("appletouch: X: %3d Y: %3d " 483 "Xz: %3d Yz: %3d\n", 484 x, y, x_z, y_z); 485 486 input_report_key(dev->input, BTN_TOUCH, 1); 487 input_report_abs(dev->input, ABS_X, x); 488 input_report_abs(dev->input, ABS_Y, y); 489 input_report_abs(dev->input, ABS_PRESSURE, 490 min(ATP_PRESSURE, x_z + y_z)); 491 atp_report_fingers(dev->input, max(x_f, y_f)); 492 } 493 dev->x_old = x; 494 dev->y_old = y; 495 496 } else if (!x && !y) { 497 498 dev->x_old = dev->y_old = -1; 499 input_report_key(dev->input, BTN_TOUCH, 0); 500 input_report_abs(dev->input, ABS_PRESSURE, 0); 501 atp_report_fingers(dev->input, 0); 502 503 /* reset the accumulator on release */ 504 memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); 505 506 /* Geyser 3 will continue to send packets continually after 507 the first touch unless reinitialised. Do so if it's been 508 idle for a while in order to avoid waking the kernel up 509 several hundred times a second */ 510 if (!key && atp_is_geyser_3(dev)) { 511 dev->idlecount++; 512 if (dev->idlecount == 10) { 513 dev->valid = 0; 514 schedule_work(&dev->work); 515 } 516 } 517 } 518 519 input_report_key(dev->input, BTN_LEFT, key); 520 input_sync(dev->input); 521 522 exit: 523 retval = usb_submit_urb(dev->urb, GFP_ATOMIC); 524 if (retval) { 525 err("%s - usb_submit_urb failed with result %d", 526 __FUNCTION__, retval); 527 } 528 } 529 530 static int atp_open(struct input_dev *input) 531 { 532 struct atp *dev = input_get_drvdata(input); 533 534 if (usb_submit_urb(dev->urb, GFP_ATOMIC)) 535 return -EIO; 536 537 dev->open = 1; 538 return 0; 539 } 540 541 static void atp_close(struct input_dev *input) 542 { 543 struct atp *dev = input_get_drvdata(input); 544 545 usb_kill_urb(dev->urb); 546 cancel_work_sync(&dev->work); 547 dev->open = 0; 548 } 549 550 static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id) 551 { 552 struct atp *dev; 553 struct input_dev *input_dev; 554 struct usb_device *udev = interface_to_usbdev(iface); 555 struct usb_host_interface *iface_desc; 556 struct usb_endpoint_descriptor *endpoint; 557 int int_in_endpointAddr = 0; 558 int i, error = -ENOMEM; 559 560 /* set up the endpoint information */ 561 /* use only the first interrupt-in endpoint */ 562 iface_desc = iface->cur_altsetting; 563 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 564 endpoint = &iface_desc->endpoint[i].desc; 565 if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { 566 /* we found an interrupt in endpoint */ 567 int_in_endpointAddr = endpoint->bEndpointAddress; 568 break; 569 } 570 } 571 if (!int_in_endpointAddr) { 572 err("Could not find int-in endpoint"); 573 return -EIO; 574 } 575 576 /* allocate memory for our device state and initialize it */ 577 dev = kzalloc(sizeof(struct atp), GFP_KERNEL); 578 input_dev = input_allocate_device(); 579 if (!dev || !input_dev) { 580 err("Out of memory"); 581 goto err_free_devs; 582 } 583 584 dev->udev = udev; 585 dev->input = input_dev; 586 dev->overflowwarn = 0; 587 if (atp_is_geyser_3(dev)) 588 dev->datalen = 64; 589 else if (atp_is_geyser_2(dev)) 590 dev->datalen = 64; 591 else 592 dev->datalen = 81; 593 594 if (atp_is_geyser_3(dev)) { 595 /* switch to raw sensor mode */ 596 if (atp_geyser3_init(udev)) 597 goto err_free_devs; 598 599 printk("appletouch Geyser 3 inited.\n"); 600 } 601 602 dev->urb = usb_alloc_urb(0, GFP_KERNEL); 603 if (!dev->urb) 604 goto err_free_devs; 605 606 dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, 607 &dev->urb->transfer_dma); 608 if (!dev->data) 609 goto err_free_urb; 610 611 usb_fill_int_urb(dev->urb, udev, 612 usb_rcvintpipe(udev, int_in_endpointAddr), 613 dev->data, dev->datalen, atp_complete, dev, 1); 614 615 usb_make_path(udev, dev->phys, sizeof(dev->phys)); 616 strlcat(dev->phys, "/input0", sizeof(dev->phys)); 617 618 input_dev->name = "appletouch"; 619 input_dev->phys = dev->phys; 620 usb_to_input_id(dev->udev, &input_dev->id); 621 input_dev->dev.parent = &iface->dev; 622 623 input_set_drvdata(input_dev, dev); 624 625 input_dev->open = atp_open; 626 input_dev->close = atp_close; 627 628 set_bit(EV_ABS, input_dev->evbit); 629 630 if (atp_is_geyser_3(dev)) { 631 /* 632 * MacBook have 20 X sensors, 10 Y sensors 633 */ 634 input_set_abs_params(input_dev, ABS_X, 0, 635 ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); 636 input_set_abs_params(input_dev, ABS_Y, 0, 637 ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); 638 } else if (atp_is_geyser_2(dev)) { 639 /* 640 * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected 641 * later. 642 */ 643 input_set_abs_params(input_dev, ABS_X, 0, 644 ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); 645 input_set_abs_params(input_dev, ABS_Y, 0, 646 ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); 647 } else { 648 /* 649 * 12" and 15" Powerbooks only have 16 x sensors, 650 * 17" models are detected later. 651 */ 652 input_set_abs_params(input_dev, ABS_X, 0, 653 (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); 654 input_set_abs_params(input_dev, ABS_Y, 0, 655 (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0); 656 } 657 input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); 658 659 set_bit(EV_KEY, input_dev->evbit); 660 set_bit(BTN_TOUCH, input_dev->keybit); 661 set_bit(BTN_TOOL_FINGER, input_dev->keybit); 662 set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); 663 set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); 664 set_bit(BTN_LEFT, input_dev->keybit); 665 666 error = input_register_device(dev->input); 667 if (error) 668 goto err_free_buffer; 669 670 /* save our data pointer in this interface device */ 671 usb_set_intfdata(iface, dev); 672 673 INIT_WORK(&dev->work, atp_reinit); 674 675 return 0; 676 677 err_free_buffer: 678 usb_buffer_free(dev->udev, dev->datalen, 679 dev->data, dev->urb->transfer_dma); 680 err_free_urb: 681 usb_free_urb(dev->urb); 682 err_free_devs: 683 usb_set_intfdata(iface, NULL); 684 kfree(dev); 685 input_free_device(input_dev); 686 return error; 687 } 688 689 static void atp_disconnect(struct usb_interface *iface) 690 { 691 struct atp *dev = usb_get_intfdata(iface); 692 693 usb_set_intfdata(iface, NULL); 694 if (dev) { 695 usb_kill_urb(dev->urb); 696 input_unregister_device(dev->input); 697 usb_buffer_free(dev->udev, dev->datalen, 698 dev->data, dev->urb->transfer_dma); 699 usb_free_urb(dev->urb); 700 kfree(dev); 701 } 702 printk(KERN_INFO "input: appletouch disconnected\n"); 703 } 704 705 static int atp_suspend(struct usb_interface *iface, pm_message_t message) 706 { 707 struct atp *dev = usb_get_intfdata(iface); 708 709 usb_kill_urb(dev->urb); 710 dev->valid = 0; 711 712 return 0; 713 } 714 715 static int atp_resume(struct usb_interface *iface) 716 { 717 struct atp *dev = usb_get_intfdata(iface); 718 719 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) 720 return -EIO; 721 722 return 0; 723 } 724 725 static struct usb_driver atp_driver = { 726 .name = "appletouch", 727 .probe = atp_probe, 728 .disconnect = atp_disconnect, 729 .suspend = atp_suspend, 730 .resume = atp_resume, 731 .id_table = atp_table, 732 }; 733 734 static int __init atp_init(void) 735 { 736 return usb_register(&atp_driver); 737 } 738 739 static void __exit atp_exit(void) 740 { 741 usb_deregister(&atp_driver); 742 } 743 744 module_init(atp_init); 745 module_exit(atp_exit); 746