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Commit | Line | Data |
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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 */ | |
75 | static 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 | }; |
99 | MODULE_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 */ |
140 | struct 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 */ | |
5a6eb676 SS |
158 | int idlecount; /* number of empty packets */ |
159 | struct work_struct work; | |
f7214ff4 SP |
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++) \ | |
c5b7c7c3 DT |
167 | printk(" %02x", tab[i]); \ |
168 | printk("\n"); \ | |
f7214ff4 SP |
169 | } |
170 | ||
c5b7c7c3 | 171 | #define dprintk(format, a...) \ |
f7214ff4 SP |
172 | do { \ |
173 | if (debug) printk(format, ##a); \ | |
174 | } while (0) | |
175 | ||
e1e02c9f | 176 | MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann"); |
f7214ff4 SP |
177 | MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver"); |
178 | MODULE_LICENSE("GPL"); | |
179 | ||
00081d37 JP |
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 | ||
f7214ff4 SP |
187 | static int debug = 1; |
188 | module_param(debug, int, 0644); | |
189 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
190 | ||
e1e02c9f MH |
191 | /* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */ |
192 | static inline int atp_is_geyser_2(struct atp *dev) | |
193 | { | |
9effa978 | 194 | u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); |
e1e02c9f MH |
195 | |
196 | return (productId == GEYSER_ANSI_PRODUCT_ID) || | |
197 | (productId == GEYSER_ISO_PRODUCT_ID) || | |
198 | (productId == GEYSER_JIS_PRODUCT_ID); | |
199 | } | |
200 | ||
9effa978 NB |
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) || | |
009ad0e7 JB |
207 | (productId == GEYSER3_JIS_PRODUCT_ID) || |
208 | (productId == GEYSER4_ANSI_PRODUCT_ID) || | |
209 | (productId == GEYSER4_ISO_PRODUCT_ID) || | |
210 | (productId == GEYSER4_JIS_PRODUCT_ID); | |
9effa978 NB |
211 | } |
212 | ||
5a6eb676 SS |
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 | ||
f7214ff4 SP |
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; | |
00081d37 | 268 | int is_increasing = 0; |
f7214ff4 SP |
269 | |
270 | *fingers = 0; | |
271 | ||
272 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
273 | if (xy_sensors[i] < threshold) { |
274 | if (is_increasing) | |
275 | is_increasing = 0; | |
276 | ||
f7214ff4 | 277 | continue; |
00081d37 JP |
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])) { | |
f7214ff4 | 295 | (*fingers)++; |
00081d37 JP |
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); | |
f7214ff4 SP |
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 | ||
7d12e780 | 327 | static void atp_complete(struct urb* urb) |
f7214ff4 SP |
328 | { |
329 | int x, y, x_z, y_z, x_f, y_f; | |
e1e02c9f | 330 | int retval, i, j; |
cb560737 | 331 | int key; |
f7214ff4 SP |
332 | struct atp *dev = urb->context; |
333 | ||
334 | switch (urb->status) { | |
335 | case 0: | |
336 | /* success */ | |
337 | break; | |
e1e02c9f MH |
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 | } | |
f7214ff4 SP |
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 */ | |
e1e02c9f | 359 | if (dev->urb->actual_length != dev->datalen) { |
9effa978 NB |
360 | dprintk("appletouch: incomplete data package" |
361 | " (first byte: %d, length: %d).\n", | |
362 | dev->data[0], dev->urb->actual_length); | |
f7214ff4 SP |
363 | goto exit; |
364 | } | |
365 | ||
366 | /* reorder the sensors values */ | |
9effa978 NB |
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)) { | |
e1e02c9f MH |
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 | } | |
f7214ff4 SP |
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 | ||
9effa978 NB |
429 | if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ |
430 | goto exit; | |
431 | ||
e1e02c9f MH |
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 | |
c5b7c7c3 DT |
443 | input_set_abs_params(dev->input, ABS_X, 0, |
444 | (ATP_XSENSORS - 1) * | |
f7214ff4 SP |
445 | ATP_XFACT - 1, |
446 | ATP_FUZZ, 0); | |
e1e02c9f MH |
447 | |
448 | break; | |
449 | } | |
f7214ff4 SP |
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); | |
cb560737 | 472 | key = dev->data[dev->datalen - 1] & 1; |
f7214ff4 SP |
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 | ||
c5b7c7c3 DT |
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, | |
f7214ff4 | 490 | min(ATP_PRESSURE, x_z + y_z)); |
c5b7c7c3 | 491 | atp_report_fingers(dev->input, max(x_f, y_f)); |
f7214ff4 SP |
492 | } |
493 | dev->x_old = x; | |
494 | dev->y_old = y; | |
5a6eb676 SS |
495 | |
496 | } else if (!x && !y) { | |
f7214ff4 SP |
497 | |
498 | dev->x_old = dev->y_old = -1; | |
c5b7c7c3 DT |
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); | |
f7214ff4 SP |
502 | |
503 | /* reset the accumulator on release */ | |
504 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
937ad5c1 SS |
505 | } |
506 | ||
46249ea6 AE |
507 | input_report_key(dev->input, BTN_LEFT, key); |
508 | input_sync(dev->input); | |
509 | ||
510 | /* Many Geysers will continue to send packets continually after | |
937ad5c1 SS |
511 | the first touch unless reinitialised. Do so if it's been |
512 | idle for a while in order to avoid waking the kernel up | |
513 | several hundred times a second */ | |
f7214ff4 | 514 | |
46249ea6 AE |
515 | if (!x && !y && !key) { |
516 | dev->idlecount++; | |
517 | if (dev->idlecount == 10) { | |
518 | dev->valid = 0; | |
519 | schedule_work(&dev->work); | |
5a6eb676 | 520 | } |
46249ea6 AE |
521 | } else |
522 | dev->idlecount = 0; | |
f7214ff4 SP |
523 | |
524 | exit: | |
525 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
526 | if (retval) { | |
527 | err("%s - usb_submit_urb failed with result %d", | |
528 | __FUNCTION__, retval); | |
529 | } | |
530 | } | |
531 | ||
532 | static int atp_open(struct input_dev *input) | |
533 | { | |
7791bdae | 534 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
535 | |
536 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
537 | return -EIO; | |
538 | ||
539 | dev->open = 1; | |
540 | return 0; | |
541 | } | |
542 | ||
543 | static void atp_close(struct input_dev *input) | |
544 | { | |
7791bdae | 545 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
546 | |
547 | usb_kill_urb(dev->urb); | |
5a6eb676 | 548 | cancel_work_sync(&dev->work); |
f7214ff4 SP |
549 | dev->open = 0; |
550 | } | |
551 | ||
552 | static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id) | |
553 | { | |
c5b7c7c3 DT |
554 | struct atp *dev; |
555 | struct input_dev *input_dev; | |
556 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
557 | struct usb_host_interface *iface_desc; |
558 | struct usb_endpoint_descriptor *endpoint; | |
559 | int int_in_endpointAddr = 0; | |
5014186d | 560 | int i, error = -ENOMEM; |
f7214ff4 SP |
561 | |
562 | /* set up the endpoint information */ | |
563 | /* use only the first interrupt-in endpoint */ | |
564 | iface_desc = iface->cur_altsetting; | |
565 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
566 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 567 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
568 | /* we found an interrupt in endpoint */ |
569 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
570 | break; | |
571 | } | |
572 | } | |
573 | if (!int_in_endpointAddr) { | |
f7214ff4 | 574 | err("Could not find int-in endpoint"); |
c5b7c7c3 | 575 | return -EIO; |
f7214ff4 SP |
576 | } |
577 | ||
c5b7c7c3 DT |
578 | /* allocate memory for our device state and initialize it */ |
579 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
580 | input_dev = input_allocate_device(); | |
581 | if (!dev || !input_dev) { | |
582 | err("Out of memory"); | |
583 | goto err_free_devs; | |
584 | } | |
585 | ||
586 | dev->udev = udev; | |
587 | dev->input = input_dev; | |
e1e02c9f | 588 | dev->overflowwarn = 0; |
9effa978 NB |
589 | if (atp_is_geyser_3(dev)) |
590 | dev->datalen = 64; | |
591 | else if (atp_is_geyser_2(dev)) | |
592 | dev->datalen = 64; | |
593 | else | |
594 | dev->datalen = 81; | |
595 | ||
596 | if (atp_is_geyser_3(dev)) { | |
5a6eb676 SS |
597 | /* switch to raw sensor mode */ |
598 | if (atp_geyser3_init(udev)) | |
9effa978 | 599 | goto err_free_devs; |
9effa978 | 600 | |
9effa978 NB |
601 | printk("appletouch Geyser 3 inited.\n"); |
602 | } | |
f7214ff4 SP |
603 | |
604 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); | |
5014186d | 605 | if (!dev->urb) |
c5b7c7c3 | 606 | goto err_free_devs; |
c5b7c7c3 | 607 | |
e1e02c9f | 608 | dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, |
f7214ff4 | 609 | &dev->urb->transfer_dma); |
5014186d | 610 | if (!dev->data) |
c5b7c7c3 | 611 | goto err_free_urb; |
c5b7c7c3 DT |
612 | |
613 | usb_fill_int_urb(dev->urb, udev, | |
614 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
e1e02c9f | 615 | dev->data, dev->datalen, atp_complete, dev, 1); |
f7214ff4 | 616 | |
c5b7c7c3 DT |
617 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
618 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
619 | ||
620 | input_dev->name = "appletouch"; | |
621 | input_dev->phys = dev->phys; | |
622 | usb_to_input_id(dev->udev, &input_dev->id); | |
c0f82d57 | 623 | input_dev->dev.parent = &iface->dev; |
f7214ff4 | 624 | |
7791bdae DT |
625 | input_set_drvdata(input_dev, dev); |
626 | ||
c5b7c7c3 DT |
627 | input_dev->open = atp_open; |
628 | input_dev->close = atp_close; | |
f7214ff4 | 629 | |
c5b7c7c3 | 630 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 631 | |
9effa978 NB |
632 | if (atp_is_geyser_3(dev)) { |
633 | /* | |
634 | * MacBook have 20 X sensors, 10 Y sensors | |
635 | */ | |
636 | input_set_abs_params(input_dev, ABS_X, 0, | |
637 | ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
638 | input_set_abs_params(input_dev, ABS_Y, 0, | |
639 | ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
640 | } else if (atp_is_geyser_2(dev)) { | |
e1e02c9f MH |
641 | /* |
642 | * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected | |
643 | * later. | |
644 | */ | |
645 | input_set_abs_params(input_dev, ABS_X, 0, | |
646 | ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
647 | input_set_abs_params(input_dev, ABS_Y, 0, | |
648 | ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
649 | } else { | |
650 | /* | |
651 | * 12" and 15" Powerbooks only have 16 x sensors, | |
652 | * 17" models are detected later. | |
653 | */ | |
654 | input_set_abs_params(input_dev, ABS_X, 0, | |
655 | (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); | |
656 | input_set_abs_params(input_dev, ABS_Y, 0, | |
657 | (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0); | |
658 | } | |
c5b7c7c3 | 659 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 660 | |
c5b7c7c3 DT |
661 | set_bit(EV_KEY, input_dev->evbit); |
662 | set_bit(BTN_TOUCH, input_dev->keybit); | |
663 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
664 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
665 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
666 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 667 | |
5014186d DT |
668 | error = input_register_device(dev->input); |
669 | if (error) | |
670 | goto err_free_buffer; | |
f7214ff4 | 671 | |
c5b7c7c3 DT |
672 | /* save our data pointer in this interface device */ |
673 | usb_set_intfdata(iface, dev); | |
f7214ff4 | 674 | |
5a6eb676 SS |
675 | INIT_WORK(&dev->work, atp_reinit); |
676 | ||
f7214ff4 SP |
677 | return 0; |
678 | ||
5014186d DT |
679 | err_free_buffer: |
680 | usb_buffer_free(dev->udev, dev->datalen, | |
681 | dev->data, dev->urb->transfer_dma); | |
c5b7c7c3 | 682 | err_free_urb: |
f7214ff4 | 683 | usb_free_urb(dev->urb); |
c5b7c7c3 | 684 | err_free_devs: |
f7214ff4 | 685 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 686 | kfree(dev); |
c5b7c7c3 | 687 | input_free_device(input_dev); |
5014186d | 688 | return error; |
f7214ff4 SP |
689 | } |
690 | ||
691 | static void atp_disconnect(struct usb_interface *iface) | |
692 | { | |
693 | struct atp *dev = usb_get_intfdata(iface); | |
694 | ||
695 | usb_set_intfdata(iface, NULL); | |
696 | if (dev) { | |
697 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 698 | input_unregister_device(dev->input); |
e1e02c9f | 699 | usb_buffer_free(dev->udev, dev->datalen, |
f7214ff4 | 700 | dev->data, dev->urb->transfer_dma); |
7af569ab | 701 | usb_free_urb(dev->urb); |
f7214ff4 SP |
702 | kfree(dev); |
703 | } | |
704 | printk(KERN_INFO "input: appletouch disconnected\n"); | |
705 | } | |
706 | ||
707 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) | |
708 | { | |
709 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 710 | |
f7214ff4 SP |
711 | usb_kill_urb(dev->urb); |
712 | dev->valid = 0; | |
5a6eb676 | 713 | |
f7214ff4 SP |
714 | return 0; |
715 | } | |
716 | ||
717 | static int atp_resume(struct usb_interface *iface) | |
718 | { | |
719 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 720 | |
f7214ff4 SP |
721 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
722 | return -EIO; | |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
727 | static struct usb_driver atp_driver = { | |
f7214ff4 SP |
728 | .name = "appletouch", |
729 | .probe = atp_probe, | |
730 | .disconnect = atp_disconnect, | |
731 | .suspend = atp_suspend, | |
732 | .resume = atp_resume, | |
733 | .id_table = atp_table, | |
734 | }; | |
735 | ||
736 | static int __init atp_init(void) | |
737 | { | |
738 | return usb_register(&atp_driver); | |
739 | } | |
740 | ||
741 | static void __exit atp_exit(void) | |
742 | { | |
743 | usb_deregister(&atp_driver); | |
744 | } | |
745 | ||
746 | module_init(atp_init); | |
747 | module_exit(atp_exit); |