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Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6-block.git] / drivers / usb / input / appletouch.c
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f7214ff4 1/*
9effa978 2 * Apple USB Touchpad (for post-February 2005 PowerBooks and MacBooks) driver
f7214ff4
SP		 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)
e1e02c9f 9 * Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch)
9effa978 10 * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch)
f7214ff4
SP		 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
f7214ff4
SP		 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>
ae0dadcf 35#include <linux/usb/input.h>
f7214ff4
SP		 36
37/* Apple has powerbooks which have the keyboard with different Product IDs */
38#define APPLE_VENDOR_ID 0x05AC
39
e1e02c9f 40/* These names come from Info.plist in AppleUSBTrackpad.kext */
e5d9832c
JB		 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
e1e02c9f 51
9effa978 52/* MacBook devices */
e5d9832c
JB		 53#define GEYSER3_ANSI_PRODUCT_ID 0x0217
54#define GEYSER3_ISO_PRODUCT_ID 0x0218
55#define GEYSER3_JIS_PRODUCT_ID 0x0219
9effa978 56
009ad0e7
JB		 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
f7214ff4 65#define ATP_DEVICE(prod) \
c5b7c7c3 66 .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
f7214ff4
SP		 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 [] = {
e5d9832c
JB		 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) },
e1e02c9f
MH		 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
009ad0e7 86 /* Core Duo MacBook & MacBook Pro */
9effa978
NB		 87 { ATP_DEVICE(GEYSER3_ANSI_PRODUCT_ID) },
88 { ATP_DEVICE(GEYSER3_ISO_PRODUCT_ID) },
89 { ATP_DEVICE(GEYSER3_JIS_PRODUCT_ID) },
90
009ad0e7
JB		 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
e1e02c9f
MH		 96 /* Terminating entry */
97 { }
f7214ff4
SP		 98};
99MODULE_DEVICE_TABLE (usb, atp_table);
100
f7214ff4
SP		 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:
c5b7c7c3
DT		 119 * 0 <= x < 960 on 12" and 15" Powerbooks
120 * 0 <= x < 1600 on 17" Powerbooks
121 * 0 <= y < 646
f7214ff4
SP		 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
009ad0e7 132/* MacBook Pro (Geyser 3 & 4) initialization constants */
9effa978
NB		 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
f7214ff4
SP		 139/* Structure to hold all of our device specific stuff */
140struct atp {
c5b7c7c3 141 char phys[64];
f7214ff4
SP		 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 */
c5b7c7c3 146 struct input_dev *input; /* input dev */
f7214ff4
SP		 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];
e1e02c9f
MH		 156 int overflowwarn; /* overflow warning printed? */
157 int datalen; /* size of an USB urb transfer */
f7214ff4
SP		 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++) \
c5b7c7c3
DT		 165 printk(" %02x", tab[i]); \
166 printk("\n"); \
f7214ff4
SP		 167 }
168
c5b7c7c3 169#define dprintk(format, a...) \
f7214ff4
SP		 170 do { \
171 if (debug) printk(format, ##a); \
172 } while (0)
173
e1e02c9f 174MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann");
f7214ff4
SP		 175MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver");
176MODULE_LICENSE("GPL");
177
00081d37
JP		 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
f7214ff4
SP		 185static int debug = 1;
186module_param(debug, int, 0644);
187MODULE_PARM_DESC(debug, "Activate debugging output");
188
e1e02c9f
MH		 189/* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */
190static inline int atp_is_geyser_2(struct atp *dev)
191{
9effa978 192 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct);
e1e02c9f
MH		 193
194 return (productId == GEYSER_ANSI_PRODUCT_ID) ||
195 (productId == GEYSER_ISO_PRODUCT_ID) ||
196 (productId == GEYSER_JIS_PRODUCT_ID);
197}
198
9effa978
NB		 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) ||
009ad0e7
JB		 205 (productId == GEYSER3_JIS_PRODUCT_ID) ||
206 (productId == GEYSER4_ANSI_PRODUCT_ID) ||
207 (productId == GEYSER4_ISO_PRODUCT_ID) ||
208 (productId == GEYSER4_JIS_PRODUCT_ID);
9effa978
NB		 209}
210
f7214ff4
SP		 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;
00081d37 217 int is_increasing = 0;
f7214ff4
SP		 218
219 *fingers = 0;
220
221 for (i = 0; i < nb_sensors; i++) {
00081d37
JP		 222 if (xy_sensors[i] < threshold) {
223 if (is_increasing)
224 is_increasing = 0;
225
f7214ff4 226 continue;
00081d37
JP		 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])) {
f7214ff4 244 (*fingers)++;
00081d37
JP		 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);
f7214ff4
SP		 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
7d12e780 276static void atp_complete(struct urb* urb)
f7214ff4
SP		 277{
278 int x, y, x_z, y_z, x_f, y_f;
e1e02c9f 279 int retval, i, j;
f7214ff4
SP		 280 struct atp *dev = urb->context;
281
282 switch (urb->status) {
283 case 0:
284 /* success */
285 break;
e1e02c9f
MH		 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 }
f7214ff4
SP		 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 */
e1e02c9f 307 if (dev->urb->actual_length != dev->datalen) {
9effa978
NB		 308 dprintk("appletouch: incomplete data package"
309 " (first byte: %d, length: %d).\n",
310 dev->data[0], dev->urb->actual_length);
f7214ff4
SP		 311 goto exit;
312 }
313
314 /* reorder the sensors values */
9effa978
NB		 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)) {
e1e02c9f
MH		 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 }
f7214ff4
SP		 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
9effa978
NB		 377 if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */
378 goto exit;
379
e1e02c9f
MH		 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
c5b7c7c3
DT		 391 input_set_abs_params(dev->input, ABS_X, 0,
392 (ATP_XSENSORS - 1) *
f7214ff4
SP		 393 ATP_XFACT - 1,
394 ATP_FUZZ, 0);
e1e02c9f
MH		 395
396 break;
397 }
f7214ff4
SP		 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
c5b7c7c3
DT		 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,
f7214ff4 437 min(ATP_PRESSURE, x_z + y_z));
c5b7c7c3 438 atp_report_fingers(dev->input, max(x_f, y_f));
f7214ff4
SP		 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;
c5b7c7c3
DT		 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);
f7214ff4
SP		 449
450 /* reset the accumulator on release */
451 memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
452 }
453
e1e02c9f
MH		 454 input_report_key(dev->input, BTN_LEFT,
455 !!dev->data[dev->datalen - 1]);
f7214ff4 456
c5b7c7c3 457 input_sync(dev->input);
f7214ff4
SP		 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{
7791bdae 469 struct atp *dev = input_get_drvdata(input);
f7214ff4
SP		 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{
7791bdae 480 struct atp *dev = input_get_drvdata(input);
f7214ff4
SP		 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{
c5b7c7c3
DT		 488 struct atp *dev;
489 struct input_dev *input_dev;
490 struct usb_device *udev = interface_to_usbdev(iface);
f7214ff4
SP		 491 struct usb_host_interface *iface_desc;
492 struct usb_endpoint_descriptor *endpoint;
493 int int_in_endpointAddr = 0;
5014186d 494 int i, error = -ENOMEM;
f7214ff4
SP		 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;
97b107ca 501 if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
f7214ff4
SP		 502 /* we found an interrupt in endpoint */
503 int_in_endpointAddr = endpoint->bEndpointAddress;
504 break;
505 }
506 }
507 if (!int_in_endpointAddr) {
f7214ff4 508 err("Could not find int-in endpoint");
c5b7c7c3 509 return -EIO;
f7214ff4
SP		 510 }
511
c5b7c7c3
DT		 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;
e1e02c9f 522 dev->overflowwarn = 0;
9effa978
NB		 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 }
f7214ff4
SP		 567
568 dev->urb = usb_alloc_urb(0, GFP_KERNEL);
5014186d 569 if (!dev->urb)
c5b7c7c3 570 goto err_free_devs;
c5b7c7c3 571
e1e02c9f 572 dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL,
f7214ff4 573 &dev->urb->transfer_dma);
5014186d 574 if (!dev->data)
c5b7c7c3 575 goto err_free_urb;
c5b7c7c3
DT		 576
577 usb_fill_int_urb(dev->urb, udev,
578 usb_rcvintpipe(udev, int_in_endpointAddr),
e1e02c9f 579 dev->data, dev->datalen, atp_complete, dev, 1);
f7214ff4 580
c5b7c7c3
DT		 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);
c0f82d57 587 input_dev->dev.parent = &iface->dev;
f7214ff4 588
7791bdae
DT		 589 input_set_drvdata(input_dev, dev);
590
c5b7c7c3
DT		 591 input_dev->open = atp_open;
592 input_dev->close = atp_close;
f7214ff4 593
c5b7c7c3 594 set_bit(EV_ABS, input_dev->evbit);
f7214ff4 595
9effa978
NB		 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)) {
e1e02c9f
MH		 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 }
c5b7c7c3 623 input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
f7214ff4 624
c5b7c7c3
DT		 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);
f7214ff4 631
5014186d
DT		 632 error = input_register_device(dev->input);
633 if (error)
634 goto err_free_buffer;
f7214ff4 635
c5b7c7c3
DT		 636 /* save our data pointer in this interface device */
637 usb_set_intfdata(iface, dev);
f7214ff4
SP		 638
639 return 0;
640
5014186d
DT		 641 err_free_buffer:
642 usb_buffer_free(dev->udev, dev->datalen,
643 dev->data, dev->urb->transfer_dma);
c5b7c7c3 644 err_free_urb:
f7214ff4 645 usb_free_urb(dev->urb);
c5b7c7c3 646 err_free_devs:
f7214ff4 647 usb_set_intfdata(iface, NULL);
f7214ff4 648 kfree(dev);
c5b7c7c3 649 input_free_device(input_dev);
5014186d 650 return error;
f7214ff4
SP		 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);
c5b7c7c3 660 input_unregister_device(dev->input);
e1e02c9f 661 usb_buffer_free(dev->udev, dev->datalen,
f7214ff4 662 dev->data, dev->urb->transfer_dma);
7af569ab 663 usb_free_urb(dev->urb);
f7214ff4
SP		 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 = {
f7214ff4
SP		 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);
Linux 6.x block layer and io_uring tree(s)