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Merge branch 'for-linus' into next
[linux-2.6/linux-2.6-openrd.git] / drivers / input / mouse / appletouch.c
blob1f41ae94f26bdf216a5f667e754b3c559831e7ed
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) 2005-2008 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 * Copyright (C) 2007-2008 Sven Anders (anders@anduras.de)
12 *
13 * Thanks to Alex Harper <basilisk@foobox.net> for his inputs.
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 *
29 */
30
31 #include <linux/kernel.h>
32 #include <linux/errno.h>
33 #include <linux/init.h>
34 #include <linux/slab.h>
35 #include <linux/module.h>
36 #include <linux/usb/input.h>
37
38 /* Type of touchpad */
39 enum atp_touchpad_type {
40 ATP_FOUNTAIN,
41 ATP_GEYSER1,
42 ATP_GEYSER2,
43 ATP_GEYSER3,
44 ATP_GEYSER4
45 };
46
47 #define ATP_DEVICE(prod, type) \
48 { \
49 .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
50 USB_DEVICE_ID_MATCH_INT_CLASS | \
51 USB_DEVICE_ID_MATCH_INT_PROTOCOL, \
52 .idVendor = 0x05ac, /* Apple */ \
53 .idProduct = (prod), \
54 .bInterfaceClass = 0x03, \
55 .bInterfaceProtocol = 0x02, \
56 .driver_info = ATP_ ## type, \
57 }
58
59 /*
60 * Table of devices (Product IDs) that work with this driver.
61 * (The names come from Info.plist in AppleUSBTrackpad.kext,
62 * According to Info.plist Geyser IV is the same as Geyser III.)
63 */
64
65 static struct usb_device_id atp_table [] = {
66 /* PowerBooks Feb 2005, iBooks G4 */
67 ATP_DEVICE(0x020e, FOUNTAIN), /* FOUNTAIN ANSI */
68 ATP_DEVICE(0x020f, FOUNTAIN), /* FOUNTAIN ISO */
69 ATP_DEVICE(0x030a, FOUNTAIN), /* FOUNTAIN TP ONLY */
70 ATP_DEVICE(0x030b, GEYSER1), /* GEYSER 1 TP ONLY */
71
72 /* PowerBooks Oct 2005 */
73 ATP_DEVICE(0x0214, GEYSER2), /* GEYSER 2 ANSI */
74 ATP_DEVICE(0x0215, GEYSER2), /* GEYSER 2 ISO */
75 ATP_DEVICE(0x0216, GEYSER2), /* GEYSER 2 JIS */
76
77 /* Core Duo MacBook & MacBook Pro */
78 ATP_DEVICE(0x0217, GEYSER3), /* GEYSER 3 ANSI */
79 ATP_DEVICE(0x0218, GEYSER3), /* GEYSER 3 ISO */
80 ATP_DEVICE(0x0219, GEYSER3), /* GEYSER 3 JIS */
81
82 /* Core2 Duo MacBook & MacBook Pro */
83 ATP_DEVICE(0x021a, GEYSER4), /* GEYSER 4 ANSI */
84 ATP_DEVICE(0x021b, GEYSER4), /* GEYSER 4 ISO */
85 ATP_DEVICE(0x021c, GEYSER4), /* GEYSER 4 JIS */
86
87 /* Core2 Duo MacBook3,1 */
88 ATP_DEVICE(0x0229, GEYSER4), /* GEYSER 4 HF ANSI */
89 ATP_DEVICE(0x022a, GEYSER4), /* GEYSER 4 HF ISO */
90 ATP_DEVICE(0x022b, GEYSER4), /* GEYSER 4 HF JIS */
91
92 /* Terminating entry */
93 { }
94 };
95 MODULE_DEVICE_TABLE(usb, atp_table);
96
97 /*
98 * number of sensors. Note that only 16 instead of 26 X (horizontal)
99 * sensors exist on 12" and 15" PowerBooks. All models have 16 Y
100 * (vertical) sensors.
101 */
102 #define ATP_XSENSORS 26
103 #define ATP_YSENSORS 16
104
105 /* amount of fuzz this touchpad generates */
106 #define ATP_FUZZ 16
107
108 /* maximum pressure this driver will report */
109 #define ATP_PRESSURE 300
110 /*
111 * multiplication factor for the X and Y coordinates.
112 * We try to keep the touchpad aspect ratio while still doing only simple
113 * arithmetics.
114 * The factors below give coordinates like:
115 *
116 * 0 <= x < 960 on 12" and 15" Powerbooks
117 * 0 <= x < 1600 on 17" Powerbooks and 17" MacBook Pro
118 * 0 <= x < 1216 on MacBooks and 15" MacBook Pro
119 *
120 * 0 <= y < 646 on all Powerbooks
121 * 0 <= y < 774 on all MacBooks
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 /* Geyser initialization constants */
133 #define ATP_GEYSER_MODE_READ_REQUEST_ID 1
134 #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9
135 #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300
136 #define ATP_GEYSER_MODE_REQUEST_INDEX 0
137 #define ATP_GEYSER_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 struct input_dev *input; /* input dev */
146 enum atp_touchpad_type type; /* type of touchpad */
147 bool open;
148 bool valid; /* are the samples valid? */
149 bool size_detect_done;
150 bool overflow_warned;
151 int x_old; /* last reported x/y, */
152 int y_old; /* used for smoothing */
153 signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS];
154 signed char xy_old[ATP_XSENSORS + ATP_YSENSORS];
155 int xy_acc[ATP_XSENSORS + ATP_YSENSORS];
156 int datalen; /* size of USB transfer */
157 int idlecount; /* number of empty packets */
158 struct work_struct work;
159 };
160
161 #define dbg_dump(msg, tab) \
162 if (debug > 1) { \
163 int __i; \
164 printk(KERN_DEBUG "appletouch: %s", msg); \
165 for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \
166 printk(" %02x", tab[__i]); \
167 printk("\n"); \
168 }
169
170 #define dprintk(format, a...) \
171 do { \
172 if (debug) \
173 printk(KERN_DEBUG format, ##a); \
174 } while (0)
175
176 MODULE_AUTHOR("Johannes Berg");
177 MODULE_AUTHOR("Stelian Pop");
178 MODULE_AUTHOR("Frank Arnold");
179 MODULE_AUTHOR("Michael Hanselmann");
180 MODULE_AUTHOR("Sven Anders");
181 MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver");
182 MODULE_LICENSE("GPL");
183
184 /*
185 * Make the threshold a module parameter
186 */
187 static int threshold = ATP_THRESHOLD;
188 module_param(threshold, int, 0644);
189 MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor"
190 " (the trackpad has many of these sensors)"
191 " less than this value.");
192
193 static int debug;
194 module_param(debug, int, 0644);
195 MODULE_PARM_DESC(debug, "Activate debugging output");
196
197 /*
198 * By default newer Geyser devices send standard USB HID mouse
199 * packets (Report ID 2). This code changes device mode, so it
200 * sends raw sensor reports (Report ID 5).
201 */
202 static int atp_geyser_init(struct usb_device *udev)
203 {
204 char data[8];
205 int size;
206 int i;
207
208 size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
209 ATP_GEYSER_MODE_READ_REQUEST_ID,
210 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
211 ATP_GEYSER_MODE_REQUEST_VALUE,
212 ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000);
213
214 if (size != 8) {
215 dprintk("atp_geyser_init: read error\n");
216 for (i = 0; i < 8; i++)
217 dprintk("appletouch[%d]: %d\n", i, data[i]);
218
219 err("Failed to read mode from device.");
220 return -EIO;
221 }
222
223 /* Apply the mode switch */
224 data[0] = ATP_GEYSER_MODE_VENDOR_VALUE;
225
226 size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
227 ATP_GEYSER_MODE_WRITE_REQUEST_ID,
228 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
229 ATP_GEYSER_MODE_REQUEST_VALUE,
230 ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000);
231
232 if (size != 8) {
233 dprintk("atp_geyser_init: write error\n");
234 for (i = 0; i < 8; i++)
235 dprintk("appletouch[%d]: %d\n", i, data[i]);
236
237 err("Failed to request geyser raw mode");
238 return -EIO;
239 }
240 return 0;
241 }
242
243 /*
244 * Reinitialise the device. This usually stops stream of empty packets
245 * coming from it.
246 */
247 static void atp_reinit(struct work_struct *work)
248 {
249 struct atp *dev = container_of(work, struct atp, work);
250 struct usb_device *udev = dev->udev;
251 int retval;
252
253 dprintk("appletouch: putting appletouch to sleep (reinit)\n");
254 dev->idlecount = 0;
255
256 atp_geyser_init(udev);
257
258 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
259 if (retval)
260 err("atp_reinit: usb_submit_urb failed with error %d",
261 retval);
262 }
263
264 static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact,
265 int *z, int *fingers)
266 {
267 int i;
268 /* values to calculate mean */
269 int pcum = 0, psum = 0;
270 int is_increasing = 0;
271
272 *fingers = 0;
273
274 for (i = 0; i < nb_sensors; i++) {
275 if (xy_sensors[i] < threshold) {
276 if (is_increasing)
277 is_increasing = 0;
278
279 continue;
280 }
281
282 /*
283 * Makes the finger detection more versatile. For example,
284 * two fingers with no gap will be detected. Also, my
285 * tests show it less likely to have intermittent loss
286 * of multiple finger readings while moving around (scrolling).
287 *
288 * Changes the multiple finger detection to counting humps on
289 * sensors (transitions from nonincreasing to increasing)
290 * instead of counting transitions from low sensors (no
291 * finger reading) to high sensors (finger above
292 * sensor)
293 *
294 * - Jason Parekh <jasonparekh@gmail.com>
295 */
296 if (i < 1 ||
297 (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) {
298 (*fingers)++;
299 is_increasing = 1;
300 } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) {
301 is_increasing = 0;
302 }
303
304 /*
305 * Subtracts threshold so a high sensor that just passes the
306 * threshold won't skew the calculated absolute coordinate.
307 * Fixes an issue where slowly moving the mouse would
308 * occasionally jump a number of pixels (slowly moving the
309 * finger makes this issue most apparent.)
310 */
311 pcum += (xy_sensors[i] - threshold) * i;
312 psum += (xy_sensors[i] - threshold);
313 }
314
315 if (psum > 0) {
316 *z = psum;
317 return pcum * fact / psum;
318 }
319
320 return 0;
321 }
322
323 static inline void atp_report_fingers(struct input_dev *input, int fingers)
324 {
325 input_report_key(input, BTN_TOOL_FINGER, fingers == 1);
326 input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2);
327 input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2);
328 }
329
330 static void atp_complete(struct urb *urb)
331 {
332 int x, y, x_z, y_z, x_f, y_f;
333 int retval, i, j;
334 int key;
335 struct atp *dev = urb->context;
336
337 switch (urb->status) {
338 case 0:
339 /* success */
340 break;
341 case -EOVERFLOW:
342 if (!dev->overflow_warned) {
343 printk(KERN_WARNING "appletouch: OVERFLOW with data "
344 "length %d, actual length is %d\n",
345 dev->datalen, dev->urb->actual_length);
346 dev->overflow_warned = true;
347 }
348 case -ECONNRESET:
349 case -ENOENT:
350 case -ESHUTDOWN:
351 /* This urb is terminated, clean up */
352 dbg("atp_complete: urb shutting down with status: %d",
353 urb->status);
354 return;
355 default:
356 dbg("atp_complete: nonzero urb status received: %d",
357 urb->status);
358 goto exit;
359 }
360
361 /* drop incomplete datasets */
362 if (dev->urb->actual_length != dev->datalen) {
363 dprintk("appletouch: incomplete data package"
364 " (first byte: %d, length: %d).\n",
365 dev->data[0], dev->urb->actual_length);
366 goto exit;
367 }
368
369 /* reorder the sensors values */
370 if (dev->type == ATP_GEYSER3 || dev->type == ATP_GEYSER4) {
371 memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
372
373 /*
374 * The values are laid out like this:
375 * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ...
376 * '-' is an unused value.
377 */
378
379 /* read X values */
380 for (i = 0, j = 19; i < 20; i += 2, j += 3) {
381 dev->xy_cur[i] = dev->data[j + 1];
382 dev->xy_cur[i + 1] = dev->data[j + 2];
383 }
384 /* read Y values */
385 for (i = 0, j = 1; i < 9; i += 2, j += 3) {
386 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1];
387 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2];
388 }
389 } else if (dev->type == ATP_GEYSER2) {
390 memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
391
392 /*
393 * The values are laid out like this:
394 * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ...
395 * '-' is an unused value.
396 */
397
398 /* read X values */
399 for (i = 0, j = 19; i < 20; i += 2, j += 3) {
400 dev->xy_cur[i] = dev->data[j];
401 dev->xy_cur[i + 1] = dev->data[j + 1];
402 }
403
404 /* read Y values */
405 for (i = 0, j = 1; i < 9; i += 2, j += 3) {
406 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j];
407 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1];
408 }
409 } else {
410 for (i = 0; i < 8; i++) {
411 /* X values */
412 dev->xy_cur[i + 0] = dev->data[5 * i + 2];
413 dev->xy_cur[i + 8] = dev->data[5 * i + 4];
414 dev->xy_cur[i + 16] = dev->data[5 * i + 42];
415 if (i < 2)
416 dev->xy_cur[i + 24] = dev->data[5 * i + 44];
417
418 /* Y values */
419 dev->xy_cur[i + 26] = dev->data[5 * i + 1];
420 dev->xy_cur[i + 34] = dev->data[5 * i + 3];
421 }
422 }
423
424 dbg_dump("sample", dev->xy_cur);
425
426 if (!dev->valid) {
427 /* first sample */
428 dev->valid = true;
429 dev->x_old = dev->y_old = -1;
430 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
431
432 if (dev->size_detect_done ||
433 dev->type == ATP_GEYSER3) /* No 17" Macbooks (yet) */
434 goto exit;
435
436 /* 17" Powerbooks have extra X sensors */
437 for (i = (dev->type == ATP_GEYSER2 ? 15 : 16);
438 i < ATP_XSENSORS; i++) {
439 if (!dev->xy_cur[i])
440 continue;
441
442 printk(KERN_INFO "appletouch: 17\" model detected.\n");
443 if (dev->type == ATP_GEYSER2)
444 input_set_abs_params(dev->input, ABS_X, 0,
445 (20 - 1) *
446 ATP_XFACT - 1,
447 ATP_FUZZ, 0);
448 else
449 input_set_abs_params(dev->input, ABS_X, 0,
450 (ATP_XSENSORS - 1) *
451 ATP_XFACT - 1,
452 ATP_FUZZ, 0);
453 break;
454 }
455
456 dev->size_detect_done = 1;
457 goto exit;
458 }
459
460 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
461 /* accumulate the change */
462 signed char change = dev->xy_old[i] - dev->xy_cur[i];
463 dev->xy_acc[i] -= change;
464
465 /* prevent down drifting */
466 if (dev->xy_acc[i] < 0)
467 dev->xy_acc[i] = 0;
468 }
469
470 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
471
472 dbg_dump("accumulator", dev->xy_acc);
473
474 x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
475 ATP_XFACT, &x_z, &x_f);
476 y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
477 ATP_YFACT, &y_z, &y_f);
478 key = dev->data[dev->datalen - 1] & 1;
479
480 if (x && y) {
481 if (dev->x_old != -1) {
482 x = (dev->x_old * 3 + x) >> 2;
483 y = (dev->y_old * 3 + y) >> 2;
484 dev->x_old = x;
485 dev->y_old = y;
486
487 if (debug > 1)
488 printk(KERN_DEBUG "appletouch: X: %3d Y: %3d "
489 "Xz: %3d Yz: %3d\n",
490 x, y, x_z, y_z);
491
492 input_report_key(dev->input, BTN_TOUCH, 1);
493 input_report_abs(dev->input, ABS_X, x);
494 input_report_abs(dev->input, ABS_Y, y);
495 input_report_abs(dev->input, ABS_PRESSURE,
496 min(ATP_PRESSURE, x_z + y_z));
497 atp_report_fingers(dev->input, max(x_f, y_f));
498 }
499 dev->x_old = x;
500 dev->y_old = y;
501
502 } else if (!x && !y) {
503
504 dev->x_old = dev->y_old = -1;
505 input_report_key(dev->input, BTN_TOUCH, 0);
506 input_report_abs(dev->input, ABS_PRESSURE, 0);
507 atp_report_fingers(dev->input, 0);
508
509 /* reset the accumulator on release */
510 memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
511 }
512
513 input_report_key(dev->input, BTN_LEFT, key);
514 input_sync(dev->input);
515
516 /*
517 * Many Geysers will continue to send packets continually after
518 * the first touch unless reinitialised. Do so if it's been
519 * idle for a while in order to avoid waking the kernel up
520 * several hundred times a second. Re-initialization does not
521 * work on Fountain touchpads.
522 */
523 if (dev->type != ATP_FOUNTAIN) {
524 /*
525 * Button must not be pressed when entering suspend,
526 * otherwise we will never release the button.
527 */
528 if (!x && !y && !key) {
529 dev->idlecount++;
530 if (dev->idlecount == 10) {
531 dev->valid = false;
532 schedule_work(&dev->work);
533 /* Don't resubmit urb here, wait for reinit */
534 return;
535 }
536 } else
537 dev->idlecount = 0;
538 }
539
540 exit:
541 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
542 if (retval)
543 err("atp_complete: usb_submit_urb failed with result %d",
544 retval);
545 }
546
547 static int atp_open(struct input_dev *input)
548 {
549 struct atp *dev = input_get_drvdata(input);
550
551 if (usb_submit_urb(dev->urb, GFP_ATOMIC))
552 return -EIO;
553
554 dev->open = 1;
555 return 0;
556 }
557
558 static void atp_close(struct input_dev *input)
559 {
560 struct atp *dev = input_get_drvdata(input);
561
562 usb_kill_urb(dev->urb);
563 cancel_work_sync(&dev->work);
564 dev->open = 0;
565 }
566
567 static int atp_handle_geyser(struct atp *dev)
568 {
569 struct usb_device *udev = dev->udev;
570
571 if (dev->type != ATP_FOUNTAIN) {
572 /* switch to raw sensor mode */
573 if (atp_geyser_init(udev))
574 return -EIO;
575
576 printk(KERN_INFO "appletouch: Geyser mode initialized.\n");
577 }
578
579 return 0;
580 }
581
582 static int atp_probe(struct usb_interface *iface,
583 const struct usb_device_id *id)
584 {
585 struct atp *dev;
586 struct input_dev *input_dev;
587 struct usb_device *udev = interface_to_usbdev(iface);
588 struct usb_host_interface *iface_desc;
589 struct usb_endpoint_descriptor *endpoint;
590 int int_in_endpointAddr = 0;
591 int i, error = -ENOMEM;
592
593 /* set up the endpoint information */
594 /* use only the first interrupt-in endpoint */
595 iface_desc = iface->cur_altsetting;
596 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
597 endpoint = &iface_desc->endpoint[i].desc;
598 if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
599 /* we found an interrupt in endpoint */
600 int_in_endpointAddr = endpoint->bEndpointAddress;
601 break;
602 }
603 }
604 if (!int_in_endpointAddr) {
605 err("Could not find int-in endpoint");
606 return -EIO;
607 }
608
609 /* allocate memory for our device state and initialize it */
610 dev = kzalloc(sizeof(struct atp), GFP_KERNEL);
611 input_dev = input_allocate_device();
612 if (!dev || !input_dev) {
613 err("Out of memory");
614 goto err_free_devs;
615 }
616
617 dev->udev = udev;
618 dev->input = input_dev;
619 dev->type = id->driver_info;
620 dev->overflow_warned = false;
621 if (dev->type == ATP_FOUNTAIN || dev->type == ATP_GEYSER1)
622 dev->datalen = 81;
623 else
624 dev->datalen = 64;
625
626 dev->urb = usb_alloc_urb(0, GFP_KERNEL);
627 if (!dev->urb)
628 goto err_free_devs;
629
630 dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL,
631 &dev->urb->transfer_dma);
632 if (!dev->data)
633 goto err_free_urb;
634
635 usb_fill_int_urb(dev->urb, udev,
636 usb_rcvintpipe(udev, int_in_endpointAddr),
637 dev->data, dev->datalen, atp_complete, dev, 1);
638
639 error = atp_handle_geyser(dev);
640 if (error)
641 goto err_free_buffer;
642
643 usb_make_path(udev, dev->phys, sizeof(dev->phys));
644 strlcat(dev->phys, "/input0", sizeof(dev->phys));
645
646 input_dev->name = "appletouch";
647 input_dev->phys = dev->phys;
648 usb_to_input_id(dev->udev, &input_dev->id);
649 input_dev->dev.parent = &iface->dev;
650
651 input_set_drvdata(input_dev, dev);
652
653 input_dev->open = atp_open;
654 input_dev->close = atp_close;
655
656 set_bit(EV_ABS, input_dev->evbit);
657
658 if (dev->type == ATP_GEYSER3 || dev->type == ATP_GEYSER4) {
659 /*
660 * MacBook have 20 X sensors, 10 Y sensors
661 */
662 input_set_abs_params(input_dev, ABS_X, 0,
663 ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0);
664 input_set_abs_params(input_dev, ABS_Y, 0,
665 ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0);
666 } else if (dev->type == ATP_GEYSER2) {
667 /*
668 * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected
669 * later.
670 */
671 input_set_abs_params(input_dev, ABS_X, 0,
672 ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0);
673 input_set_abs_params(input_dev, ABS_Y, 0,
674 ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0);
675 } else {
676 /*
677 * 12" and 15" Powerbooks only have 16 x sensors,
678 * 17" models are detected later.
679 */
680 input_set_abs_params(input_dev, ABS_X, 0,
681 (16 - 1) * ATP_XFACT - 1,
682 ATP_FUZZ, 0);
683 input_set_abs_params(input_dev, ABS_Y, 0,
684 (ATP_YSENSORS - 1) * ATP_YFACT - 1,
685 ATP_FUZZ, 0);
686 }
687 input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
688
689 set_bit(EV_KEY, input_dev->evbit);
690 set_bit(BTN_TOUCH, input_dev->keybit);
691 set_bit(BTN_TOOL_FINGER, input_dev->keybit);
692 set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
693 set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
694 set_bit(BTN_LEFT, input_dev->keybit);
695
696 error = input_register_device(dev->input);
697 if (error)
698 goto err_free_buffer;
699
700 /* save our data pointer in this interface device */
701 usb_set_intfdata(iface, dev);
702
703 INIT_WORK(&dev->work, atp_reinit);
704
705 return 0;
706
707 err_free_buffer:
708 usb_buffer_free(dev->udev, dev->datalen,
709 dev->data, dev->urb->transfer_dma);
710 err_free_urb:
711 usb_free_urb(dev->urb);
712 err_free_devs:
713 usb_set_intfdata(iface, NULL);
714 kfree(dev);
715 input_free_device(input_dev);
716 return error;
717 }
718
719 static void atp_disconnect(struct usb_interface *iface)
720 {
721 struct atp *dev = usb_get_intfdata(iface);
722
723 usb_set_intfdata(iface, NULL);
724 if (dev) {
725 usb_kill_urb(dev->urb);
726 input_unregister_device(dev->input);
727 usb_buffer_free(dev->udev, dev->datalen,
728 dev->data, dev->urb->transfer_dma);
729 usb_free_urb(dev->urb);
730 kfree(dev);
731 }
732 printk(KERN_INFO "input: appletouch disconnected\n");
733 }
734
735 static int atp_recover(struct atp *dev)
736 {
737 int error;
738
739 error = atp_handle_geyser(dev);
740 if (error)
741 return error;
742
743 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
744 return -EIO;
745
746 return 0;
747 }
748
749 static int atp_suspend(struct usb_interface *iface, pm_message_t message)
750 {
751 struct atp *dev = usb_get_intfdata(iface);
752
753 usb_kill_urb(dev->urb);
754 dev->valid = false;
755
756 return 0;
757 }
758
759 static int atp_resume(struct usb_interface *iface)
760 {
761 struct atp *dev = usb_get_intfdata(iface);
762
763 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
764 return -EIO;
765
766 return 0;
767 }
768
769 static int atp_reset_resume(struct usb_interface *iface)
770 {
771 struct atp *dev = usb_get_intfdata(iface);
772
773 return atp_recover(dev);
774 }
775
776 static struct usb_driver atp_driver = {
777 .name = "appletouch",
778 .probe = atp_probe,
779 .disconnect = atp_disconnect,
780 .suspend = atp_suspend,
781 .resume = atp_resume,
782 .reset_resume = atp_reset_resume,
783 .id_table = atp_table,
784 };
785
786 static int __init atp_init(void)
787 {
788 return usb_register(&atp_driver);
789 }
790
791 static void __exit atp_exit(void)
792 {
793 usb_deregister(&atp_driver);
794 }
795
796 module_init(atp_init);
797 module_exit(atp_exit);
linux 2.6 git repository for openrd