diff options
Diffstat (limited to 'drivers/input/mouse/appletouch.c')
-rw-r--r-- | drivers/input/mouse/appletouch.c | 706 |
1 files changed, 706 insertions, 0 deletions
diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c new file mode 100644 index 000000000000..e3215267db11 --- /dev/null +++ b/drivers/input/mouse/appletouch.c | |||
@@ -0,0 +1,706 @@ | |||
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 | }; | ||
159 | |||
160 | #define dbg_dump(msg, tab) \ | ||
161 | if (debug > 1) { \ | ||
162 | int i; \ | ||
163 | printk("appletouch: %s %lld", msg, (long long)jiffies); \ | ||
164 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) \ | ||
165 | printk(" %02x", tab[i]); \ | ||
166 | printk("\n"); \ | ||
167 | } | ||
168 | |||
169 | #define dprintk(format, a...) \ | ||
170 | do { \ | ||
171 | if (debug) printk(format, ##a); \ | ||
172 | } while (0) | ||
173 | |||
174 | MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann"); | ||
175 | MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver"); | ||
176 | MODULE_LICENSE("GPL"); | ||
177 | |||
178 | /* | ||
179 | * Make the threshold a module parameter | ||
180 | */ | ||
181 | static int threshold = ATP_THRESHOLD; | ||
182 | module_param(threshold, int, 0644); | ||
183 | MODULE_PARM_DESC(threshold, "Discards any change in data from a sensor (trackpad has hundreds of these sensors) less than this value"); | ||
184 | |||
185 | static int debug = 1; | ||
186 | module_param(debug, int, 0644); | ||
187 | MODULE_PARM_DESC(debug, "Activate debugging output"); | ||
188 | |||
189 | /* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */ | ||
190 | static inline int atp_is_geyser_2(struct atp *dev) | ||
191 | { | ||
192 | u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); | ||
193 | |||
194 | return (productId == GEYSER_ANSI_PRODUCT_ID) || | ||
195 | (productId == GEYSER_ISO_PRODUCT_ID) || | ||
196 | (productId == GEYSER_JIS_PRODUCT_ID); | ||
197 | } | ||
198 | |||
199 | static inline int atp_is_geyser_3(struct atp *dev) | ||
200 | { | ||
201 | u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); | ||
202 | |||
203 | return (productId == GEYSER3_ANSI_PRODUCT_ID) || | ||
204 | (productId == GEYSER3_ISO_PRODUCT_ID) || | ||
205 | (productId == GEYSER3_JIS_PRODUCT_ID) || | ||
206 | (productId == GEYSER4_ANSI_PRODUCT_ID) || | ||
207 | (productId == GEYSER4_ISO_PRODUCT_ID) || | ||
208 | (productId == GEYSER4_JIS_PRODUCT_ID); | ||
209 | } | ||
210 | |||
211 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, | ||
212 | int *z, int *fingers) | ||
213 | { | ||
214 | int i; | ||
215 | /* values to calculate mean */ | ||
216 | int pcum = 0, psum = 0; | ||
217 | int is_increasing = 0; | ||
218 | |||
219 | *fingers = 0; | ||
220 | |||
221 | for (i = 0; i < nb_sensors; i++) { | ||
222 | if (xy_sensors[i] < threshold) { | ||
223 | if (is_increasing) | ||
224 | is_increasing = 0; | ||
225 | |||
226 | continue; | ||
227 | } | ||
228 | |||
229 | /* | ||
230 | * Makes the finger detection more versatile. For example, | ||
231 | * two fingers with no gap will be detected. Also, my | ||
232 | * tests show it less likely to have intermittent loss | ||
233 | * of multiple finger readings while moving around (scrolling). | ||
234 | * | ||
235 | * Changes the multiple finger detection to counting humps on | ||
236 | * sensors (transitions from nonincreasing to increasing) | ||
237 | * instead of counting transitions from low sensors (no | ||
238 | * finger reading) to high sensors (finger above | ||
239 | * sensor) | ||
240 | * | ||
241 | * - Jason Parekh <jasonparekh@gmail.com> | ||
242 | */ | ||
243 | if (i < 1 || (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { | ||
244 | (*fingers)++; | ||
245 | is_increasing = 1; | ||
246 | } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) { | ||
247 | is_increasing = 0; | ||
248 | } | ||
249 | |||
250 | /* | ||
251 | * Subtracts threshold so a high sensor that just passes the threshold | ||
252 | * won't skew the calculated absolute coordinate. Fixes an issue | ||
253 | * where slowly moving the mouse would occassionaly jump a number of | ||
254 | * pixels (let me restate--slowly moving the mouse makes this issue | ||
255 | * most apparent). | ||
256 | */ | ||
257 | pcum += (xy_sensors[i] - threshold) * i; | ||
258 | psum += (xy_sensors[i] - threshold); | ||
259 | } | ||
260 | |||
261 | if (psum > 0) { | ||
262 | *z = psum; | ||
263 | return pcum * fact / psum; | ||
264 | } | ||
265 | |||
266 | return 0; | ||
267 | } | ||
268 | |||
269 | static 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 | |||
276 | static void atp_complete(struct urb* urb) | ||
277 | { | ||
278 | int x, y, x_z, y_z, x_f, y_f; | ||
279 | int retval, i, j; | ||
280 | struct atp *dev = urb->context; | ||
281 | |||
282 | switch (urb->status) { | ||
283 | case 0: | ||
284 | /* success */ | ||
285 | break; | ||
286 | case -EOVERFLOW: | ||
287 | if(!dev->overflowwarn) { | ||
288 | printk("appletouch: OVERFLOW with data " | ||
289 | "length %d, actual length is %d\n", | ||
290 | dev->datalen, dev->urb->actual_length); | ||
291 | dev->overflowwarn = 1; | ||
292 | } | ||
293 | case -ECONNRESET: | ||
294 | case -ENOENT: | ||
295 | case -ESHUTDOWN: | ||
296 | /* This urb is terminated, clean up */ | ||
297 | dbg("%s - urb shutting down with status: %d", | ||
298 | __FUNCTION__, urb->status); | ||
299 | return; | ||
300 | default: | ||
301 | dbg("%s - nonzero urb status received: %d", | ||
302 | __FUNCTION__, urb->status); | ||
303 | goto exit; | ||
304 | } | ||
305 | |||
306 | /* drop incomplete datasets */ | ||
307 | if (dev->urb->actual_length != dev->datalen) { | ||
308 | dprintk("appletouch: incomplete data package" | ||
309 | " (first byte: %d, length: %d).\n", | ||
310 | dev->data[0], dev->urb->actual_length); | ||
311 | goto exit; | ||
312 | } | ||
313 | |||
314 | /* reorder the sensors values */ | ||
315 | if (atp_is_geyser_3(dev)) { | ||
316 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); | ||
317 | |||
318 | /* | ||
319 | * The values are laid out like this: | ||
320 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | ||
321 | * '-' is an unused value. | ||
322 | */ | ||
323 | |||
324 | /* read X values */ | ||
325 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | ||
326 | dev->xy_cur[i] = dev->data[j + 1]; | ||
327 | dev->xy_cur[i + 1] = dev->data[j + 2]; | ||
328 | } | ||
329 | /* read Y values */ | ||
330 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | ||
331 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | ||
332 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | ||
333 | } | ||
334 | } else if (atp_is_geyser_2(dev)) { | ||
335 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); | ||
336 | |||
337 | /* | ||
338 | * The values are laid out like this: | ||
339 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | ||
340 | * '-' is an unused value. | ||
341 | */ | ||
342 | |||
343 | /* read X values */ | ||
344 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | ||
345 | dev->xy_cur[i] = dev->data[j]; | ||
346 | dev->xy_cur[i + 1] = dev->data[j + 1]; | ||
347 | } | ||
348 | |||
349 | /* read Y values */ | ||
350 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | ||
351 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | ||
352 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | ||
353 | } | ||
354 | } else { | ||
355 | for (i = 0; i < 8; i++) { | ||
356 | /* X values */ | ||
357 | dev->xy_cur[i ] = dev->data[5 * i + 2]; | ||
358 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; | ||
359 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | ||
360 | if (i < 2) | ||
361 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | ||
362 | |||
363 | /* Y values */ | ||
364 | dev->xy_cur[i + 26] = dev->data[5 * i + 1]; | ||
365 | dev->xy_cur[i + 34] = dev->data[5 * i + 3]; | ||
366 | } | ||
367 | } | ||
368 | |||
369 | dbg_dump("sample", dev->xy_cur); | ||
370 | |||
371 | if (!dev->valid) { | ||
372 | /* first sample */ | ||
373 | dev->valid = 1; | ||
374 | dev->x_old = dev->y_old = -1; | ||
375 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | ||
376 | |||
377 | if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ | ||
378 | goto exit; | ||
379 | |||
380 | /* 17" Powerbooks have extra X sensors */ | ||
381 | for (i = (atp_is_geyser_2(dev)?15:16); i < ATP_XSENSORS; i++) { | ||
382 | if (!dev->xy_cur[i]) continue; | ||
383 | |||
384 | printk("appletouch: 17\" model detected.\n"); | ||
385 | if(atp_is_geyser_2(dev)) | ||
386 | input_set_abs_params(dev->input, ABS_X, 0, | ||
387 | (20 - 1) * | ||
388 | ATP_XFACT - 1, | ||
389 | ATP_FUZZ, 0); | ||
390 | else | ||
391 | input_set_abs_params(dev->input, ABS_X, 0, | ||
392 | (ATP_XSENSORS - 1) * | ||
393 | ATP_XFACT - 1, | ||
394 | ATP_FUZZ, 0); | ||
395 | |||
396 | break; | ||
397 | } | ||
398 | |||
399 | goto exit; | ||
400 | } | ||
401 | |||
402 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | ||
403 | /* accumulate the change */ | ||
404 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; | ||
405 | dev->xy_acc[i] -= change; | ||
406 | |||
407 | /* prevent down drifting */ | ||
408 | if (dev->xy_acc[i] < 0) | ||
409 | dev->xy_acc[i] = 0; | ||
410 | } | ||
411 | |||
412 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | ||
413 | |||
414 | dbg_dump("accumulator", dev->xy_acc); | ||
415 | |||
416 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | ||
417 | ATP_XFACT, &x_z, &x_f); | ||
418 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, | ||
419 | ATP_YFACT, &y_z, &y_f); | ||
420 | |||
421 | if (x && y) { | ||
422 | if (dev->x_old != -1) { | ||
423 | x = (dev->x_old * 3 + x) >> 2; | ||
424 | y = (dev->y_old * 3 + y) >> 2; | ||
425 | dev->x_old = x; | ||
426 | dev->y_old = y; | ||
427 | |||
428 | if (debug > 1) | ||
429 | printk("appletouch: X: %3d Y: %3d " | ||
430 | "Xz: %3d Yz: %3d\n", | ||
431 | x, y, x_z, y_z); | ||
432 | |||
433 | input_report_key(dev->input, BTN_TOUCH, 1); | ||
434 | input_report_abs(dev->input, ABS_X, x); | ||
435 | input_report_abs(dev->input, ABS_Y, y); | ||
436 | input_report_abs(dev->input, ABS_PRESSURE, | ||
437 | min(ATP_PRESSURE, x_z + y_z)); | ||
438 | atp_report_fingers(dev->input, max(x_f, y_f)); | ||
439 | } | ||
440 | dev->x_old = x; | ||
441 | dev->y_old = y; | ||
442 | } | ||
443 | else if (!x && !y) { | ||
444 | |||
445 | dev->x_old = dev->y_old = -1; | ||
446 | input_report_key(dev->input, BTN_TOUCH, 0); | ||
447 | input_report_abs(dev->input, ABS_PRESSURE, 0); | ||
448 | atp_report_fingers(dev->input, 0); | ||
449 | |||
450 | /* reset the accumulator on release */ | ||
451 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | ||
452 | } | ||
453 | |||
454 | input_report_key(dev->input, BTN_LEFT, | ||
455 | !!dev->data[dev->datalen - 1]); | ||
456 | |||
457 | input_sync(dev->input); | ||
458 | |||
459 | exit: | ||
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 | |||
467 | static int atp_open(struct input_dev *input) | ||
468 | { | ||
469 | struct atp *dev = input_get_drvdata(input); | ||
470 | |||
471 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | ||
472 | return -EIO; | ||
473 | |||
474 | dev->open = 1; | ||
475 | return 0; | ||
476 | } | ||
477 | |||
478 | static void atp_close(struct input_dev *input) | ||
479 | { | ||
480 | struct atp *dev = input_get_drvdata(input); | ||
481 | |||
482 | usb_kill_urb(dev->urb); | ||
483 | dev->open = 0; | ||
484 | } | ||
485 | |||
486 | static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id) | ||
487 | { | ||
488 | struct atp *dev; | ||
489 | struct input_dev *input_dev; | ||
490 | struct usb_device *udev = interface_to_usbdev(iface); | ||
491 | struct usb_host_interface *iface_desc; | ||
492 | struct usb_endpoint_descriptor *endpoint; | ||
493 | int int_in_endpointAddr = 0; | ||
494 | int i, error = -ENOMEM; | ||
495 | |||
496 | /* set up the endpoint information */ | ||
497 | /* use only the first interrupt-in endpoint */ | ||
498 | iface_desc = iface->cur_altsetting; | ||
499 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | ||
500 | endpoint = &iface_desc->endpoint[i].desc; | ||
501 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { | ||
502 | /* we found an interrupt in endpoint */ | ||
503 | int_in_endpointAddr = endpoint->bEndpointAddress; | ||
504 | break; | ||
505 | } | ||
506 | } | ||
507 | if (!int_in_endpointAddr) { | ||
508 | err("Could not find int-in endpoint"); | ||
509 | return -EIO; | ||
510 | } | ||
511 | |||
512 | /* allocate memory for our device state and initialize it */ | ||
513 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | ||
514 | input_dev = input_allocate_device(); | ||
515 | if (!dev || !input_dev) { | ||
516 | err("Out of memory"); | ||
517 | goto err_free_devs; | ||
518 | } | ||
519 | |||
520 | dev->udev = udev; | ||
521 | dev->input = input_dev; | ||
522 | dev->overflowwarn = 0; | ||
523 | if (atp_is_geyser_3(dev)) | ||
524 | dev->datalen = 64; | ||
525 | else if (atp_is_geyser_2(dev)) | ||
526 | dev->datalen = 64; | ||
527 | else | ||
528 | dev->datalen = 81; | ||
529 | |||
530 | if (atp_is_geyser_3(dev)) { | ||
531 | /* | ||
532 | * By default Geyser 3 device sends standard USB HID mouse | ||
533 | * packets (Report ID 2). This code changes device mode, so it | ||
534 | * sends raw sensor reports (Report ID 5). | ||
535 | */ | ||
536 | char data[8]; | ||
537 | int size; | ||
538 | |||
539 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | ||
540 | ATP_GEYSER3_MODE_READ_REQUEST_ID, | ||
541 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | ||
542 | ATP_GEYSER3_MODE_REQUEST_VALUE, | ||
543 | ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); | ||
544 | |||
545 | if (size != 8) { | ||
546 | err("Could not do mode read request from device" | ||
547 | " (Geyser 3 mode)"); | ||
548 | goto err_free_devs; | ||
549 | } | ||
550 | |||
551 | /* Apply the mode switch */ | ||
552 | data[0] = ATP_GEYSER3_MODE_VENDOR_VALUE; | ||
553 | |||
554 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | ||
555 | ATP_GEYSER3_MODE_WRITE_REQUEST_ID, | ||
556 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | ||
557 | ATP_GEYSER3_MODE_REQUEST_VALUE, | ||
558 | ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); | ||
559 | |||
560 | if (size != 8) { | ||
561 | err("Could not do mode write request to device" | ||
562 | " (Geyser 3 mode)"); | ||
563 | goto err_free_devs; | ||
564 | } | ||
565 | printk("appletouch Geyser 3 inited.\n"); | ||
566 | } | ||
567 | |||
568 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); | ||
569 | if (!dev->urb) | ||
570 | goto err_free_devs; | ||
571 | |||
572 | dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, | ||
573 | &dev->urb->transfer_dma); | ||
574 | if (!dev->data) | ||
575 | goto err_free_urb; | ||
576 | |||
577 | usb_fill_int_urb(dev->urb, udev, | ||
578 | usb_rcvintpipe(udev, int_in_endpointAddr), | ||
579 | dev->data, dev->datalen, atp_complete, dev, 1); | ||
580 | |||
581 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); | ||
582 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | ||
583 | |||
584 | input_dev->name = "appletouch"; | ||
585 | input_dev->phys = dev->phys; | ||
586 | usb_to_input_id(dev->udev, &input_dev->id); | ||
587 | input_dev->dev.parent = &iface->dev; | ||
588 | |||
589 | input_set_drvdata(input_dev, dev); | ||
590 | |||
591 | input_dev->open = atp_open; | ||
592 | input_dev->close = atp_close; | ||
593 | |||
594 | set_bit(EV_ABS, input_dev->evbit); | ||
595 | |||
596 | if (atp_is_geyser_3(dev)) { | ||
597 | /* | ||
598 | * MacBook have 20 X sensors, 10 Y sensors | ||
599 | */ | ||
600 | input_set_abs_params(input_dev, ABS_X, 0, | ||
601 | ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | ||
602 | input_set_abs_params(input_dev, ABS_Y, 0, | ||
603 | ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | ||
604 | } else if (atp_is_geyser_2(dev)) { | ||
605 | /* | ||
606 | * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected | ||
607 | * later. | ||
608 | */ | ||
609 | input_set_abs_params(input_dev, ABS_X, 0, | ||
610 | ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | ||
611 | input_set_abs_params(input_dev, ABS_Y, 0, | ||
612 | ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | ||
613 | } else { | ||
614 | /* | ||
615 | * 12" and 15" Powerbooks only have 16 x sensors, | ||
616 | * 17" models are detected later. | ||
617 | */ | ||
618 | input_set_abs_params(input_dev, ABS_X, 0, | ||
619 | (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); | ||
620 | input_set_abs_params(input_dev, ABS_Y, 0, | ||
621 | (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0); | ||
622 | } | ||
623 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); | ||
624 | |||
625 | set_bit(EV_KEY, input_dev->evbit); | ||
626 | set_bit(BTN_TOUCH, input_dev->keybit); | ||
627 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | ||
628 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | ||
629 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | ||
630 | set_bit(BTN_LEFT, input_dev->keybit); | ||
631 | |||
632 | error = input_register_device(dev->input); | ||
633 | if (error) | ||
634 | goto err_free_buffer; | ||
635 | |||
636 | /* save our data pointer in this interface device */ | ||
637 | usb_set_intfdata(iface, dev); | ||
638 | |||
639 | return 0; | ||
640 | |||
641 | err_free_buffer: | ||
642 | usb_buffer_free(dev->udev, dev->datalen, | ||
643 | dev->data, dev->urb->transfer_dma); | ||
644 | err_free_urb: | ||
645 | usb_free_urb(dev->urb); | ||
646 | err_free_devs: | ||
647 | usb_set_intfdata(iface, NULL); | ||
648 | kfree(dev); | ||
649 | input_free_device(input_dev); | ||
650 | return error; | ||
651 | } | ||
652 | |||
653 | static void atp_disconnect(struct usb_interface *iface) | ||
654 | { | ||
655 | struct atp *dev = usb_get_intfdata(iface); | ||
656 | |||
657 | usb_set_intfdata(iface, NULL); | ||
658 | if (dev) { | ||
659 | usb_kill_urb(dev->urb); | ||
660 | input_unregister_device(dev->input); | ||
661 | usb_buffer_free(dev->udev, dev->datalen, | ||
662 | dev->data, dev->urb->transfer_dma); | ||
663 | usb_free_urb(dev->urb); | ||
664 | kfree(dev); | ||
665 | } | ||
666 | printk(KERN_INFO "input: appletouch disconnected\n"); | ||
667 | } | ||
668 | |||
669 | static 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 | |||
677 | static 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 | |||
686 | static struct usb_driver atp_driver = { | ||
687 | .name = "appletouch", | ||
688 | .probe = atp_probe, | ||
689 | .disconnect = atp_disconnect, | ||
690 | .suspend = atp_suspend, | ||
691 | .resume = atp_resume, | ||
692 | .id_table = atp_table, | ||
693 | }; | ||
694 | |||
695 | static int __init atp_init(void) | ||
696 | { | ||
697 | return usb_register(&atp_driver); | ||
698 | } | ||
699 | |||
700 | static void __exit atp_exit(void) | ||
701 | { | ||
702 | usb_deregister(&atp_driver); | ||
703 | } | ||
704 | |||
705 | module_init(atp_init); | ||
706 | module_exit(atp_exit); | ||