Commit | Line | Data |
---|---|---|
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 MH |
40 | /* These names come from Info.plist in AppleUSBTrackpad.kext */ |
41 | #define GEYSER_ANSI_PRODUCT_ID 0x0214 | |
42 | #define GEYSER_ISO_PRODUCT_ID 0x0215 | |
43 | #define GEYSER_JIS_PRODUCT_ID 0x0216 | |
44 | ||
9effa978 NB |
45 | /* MacBook devices */ |
46 | #define GEYSER3_ANSI_PRODUCT_ID 0x0217 | |
47 | #define GEYSER3_ISO_PRODUCT_ID 0x0218 | |
48 | #define GEYSER3_JIS_PRODUCT_ID 0x0219 | |
49 | ||
f7214ff4 | 50 | #define ATP_DEVICE(prod) \ |
c5b7c7c3 | 51 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ |
f7214ff4 SP |
52 | USB_DEVICE_ID_MATCH_INT_CLASS | \ |
53 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ | |
54 | .idVendor = APPLE_VENDOR_ID, \ | |
55 | .idProduct = (prod), \ | |
56 | .bInterfaceClass = 0x03, \ | |
57 | .bInterfaceProtocol = 0x02 | |
58 | ||
59 | /* table of devices that work with this driver */ | |
60 | static struct usb_device_id atp_table [] = { | |
61 | { ATP_DEVICE(0x020E) }, | |
62 | { ATP_DEVICE(0x020F) }, | |
63 | { ATP_DEVICE(0x030A) }, | |
64 | { ATP_DEVICE(0x030B) }, | |
e1e02c9f MH |
65 | |
66 | /* PowerBooks Oct 2005 */ | |
67 | { ATP_DEVICE(GEYSER_ANSI_PRODUCT_ID) }, | |
68 | { ATP_DEVICE(GEYSER_ISO_PRODUCT_ID) }, | |
69 | { ATP_DEVICE(GEYSER_JIS_PRODUCT_ID) }, | |
70 | ||
9effa978 NB |
71 | { ATP_DEVICE(GEYSER3_ANSI_PRODUCT_ID) }, |
72 | { ATP_DEVICE(GEYSER3_ISO_PRODUCT_ID) }, | |
73 | { ATP_DEVICE(GEYSER3_JIS_PRODUCT_ID) }, | |
74 | ||
e1e02c9f MH |
75 | /* Terminating entry */ |
76 | { } | |
f7214ff4 SP |
77 | }; |
78 | MODULE_DEVICE_TABLE (usb, atp_table); | |
79 | ||
f7214ff4 SP |
80 | /* |
81 | * number of sensors. Note that only 16 instead of 26 X (horizontal) | |
82 | * sensors exist on 12" and 15" PowerBooks. All models have 16 Y | |
83 | * (vertical) sensors. | |
84 | */ | |
85 | #define ATP_XSENSORS 26 | |
86 | #define ATP_YSENSORS 16 | |
87 | ||
88 | /* amount of fuzz this touchpad generates */ | |
89 | #define ATP_FUZZ 16 | |
90 | ||
91 | /* maximum pressure this driver will report */ | |
92 | #define ATP_PRESSURE 300 | |
93 | /* | |
94 | * multiplication factor for the X and Y coordinates. | |
95 | * We try to keep the touchpad aspect ratio while still doing only simple | |
96 | * arithmetics. | |
97 | * The factors below give coordinates like: | |
c5b7c7c3 DT |
98 | * 0 <= x < 960 on 12" and 15" Powerbooks |
99 | * 0 <= x < 1600 on 17" Powerbooks | |
100 | * 0 <= y < 646 | |
f7214ff4 SP |
101 | */ |
102 | #define ATP_XFACT 64 | |
103 | #define ATP_YFACT 43 | |
104 | ||
105 | /* | |
106 | * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is | |
107 | * ignored. | |
108 | */ | |
109 | #define ATP_THRESHOLD 5 | |
110 | ||
9effa978 NB |
111 | /* MacBook Pro (Geyser 3) initialization constants */ |
112 | #define ATP_GEYSER3_MODE_READ_REQUEST_ID 1 | |
113 | #define ATP_GEYSER3_MODE_WRITE_REQUEST_ID 9 | |
114 | #define ATP_GEYSER3_MODE_REQUEST_VALUE 0x300 | |
115 | #define ATP_GEYSER3_MODE_REQUEST_INDEX 0 | |
116 | #define ATP_GEYSER3_MODE_VENDOR_VALUE 0x04 | |
117 | ||
f7214ff4 SP |
118 | /* Structure to hold all of our device specific stuff */ |
119 | struct atp { | |
c5b7c7c3 | 120 | char phys[64]; |
f7214ff4 SP |
121 | struct usb_device * udev; /* usb device */ |
122 | struct urb * urb; /* usb request block */ | |
123 | signed char * data; /* transferred data */ | |
124 | int open; /* non-zero if opened */ | |
c5b7c7c3 | 125 | struct input_dev *input; /* input dev */ |
f7214ff4 SP |
126 | int valid; /* are the sensors valid ? */ |
127 | int x_old; /* last reported x/y, */ | |
128 | int y_old; /* used for smoothing */ | |
129 | /* current value of the sensors */ | |
130 | signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; | |
131 | /* last value of the sensors */ | |
132 | signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; | |
133 | /* accumulated sensors */ | |
134 | int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; | |
e1e02c9f MH |
135 | int overflowwarn; /* overflow warning printed? */ |
136 | int datalen; /* size of an USB urb transfer */ | |
f7214ff4 SP |
137 | }; |
138 | ||
139 | #define dbg_dump(msg, tab) \ | |
140 | if (debug > 1) { \ | |
141 | int i; \ | |
142 | printk("appletouch: %s %lld", msg, (long long)jiffies); \ | |
143 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) \ | |
c5b7c7c3 DT |
144 | printk(" %02x", tab[i]); \ |
145 | printk("\n"); \ | |
f7214ff4 SP |
146 | } |
147 | ||
c5b7c7c3 | 148 | #define dprintk(format, a...) \ |
f7214ff4 SP |
149 | do { \ |
150 | if (debug) printk(format, ##a); \ | |
151 | } while (0) | |
152 | ||
e1e02c9f | 153 | MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann"); |
f7214ff4 SP |
154 | MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver"); |
155 | MODULE_LICENSE("GPL"); | |
156 | ||
00081d37 JP |
157 | /* |
158 | * Make the threshold a module parameter | |
159 | */ | |
160 | static int threshold = ATP_THRESHOLD; | |
161 | module_param(threshold, int, 0644); | |
162 | MODULE_PARM_DESC(threshold, "Discards any change in data from a sensor (trackpad has hundreds of these sensors) less than this value"); | |
163 | ||
f7214ff4 SP |
164 | static int debug = 1; |
165 | module_param(debug, int, 0644); | |
166 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
167 | ||
e1e02c9f MH |
168 | /* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */ |
169 | static inline int atp_is_geyser_2(struct atp *dev) | |
170 | { | |
9effa978 | 171 | u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); |
e1e02c9f MH |
172 | |
173 | return (productId == GEYSER_ANSI_PRODUCT_ID) || | |
174 | (productId == GEYSER_ISO_PRODUCT_ID) || | |
175 | (productId == GEYSER_JIS_PRODUCT_ID); | |
176 | } | |
177 | ||
9effa978 NB |
178 | static inline int atp_is_geyser_3(struct atp *dev) |
179 | { | |
180 | u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); | |
181 | ||
182 | return (productId == GEYSER3_ANSI_PRODUCT_ID) || | |
183 | (productId == GEYSER3_ISO_PRODUCT_ID) || | |
184 | (productId == GEYSER3_JIS_PRODUCT_ID); | |
185 | } | |
186 | ||
f7214ff4 SP |
187 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, |
188 | int *z, int *fingers) | |
189 | { | |
190 | int i; | |
191 | /* values to calculate mean */ | |
192 | int pcum = 0, psum = 0; | |
00081d37 | 193 | int is_increasing = 0; |
f7214ff4 SP |
194 | |
195 | *fingers = 0; | |
196 | ||
197 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
198 | if (xy_sensors[i] < threshold) { |
199 | if (is_increasing) | |
200 | is_increasing = 0; | |
201 | ||
f7214ff4 | 202 | continue; |
00081d37 JP |
203 | } |
204 | ||
205 | /* | |
206 | * Makes the finger detection more versatile. For example, | |
207 | * two fingers with no gap will be detected. Also, my | |
208 | * tests show it less likely to have intermittent loss | |
209 | * of multiple finger readings while moving around (scrolling). | |
210 | * | |
211 | * Changes the multiple finger detection to counting humps on | |
212 | * sensors (transitions from nonincreasing to increasing) | |
213 | * instead of counting transitions from low sensors (no | |
214 | * finger reading) to high sensors (finger above | |
215 | * sensor) | |
216 | * | |
217 | * - Jason Parekh <jasonparekh@gmail.com> | |
218 | */ | |
219 | if (i < 1 || (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { | |
f7214ff4 | 220 | (*fingers)++; |
00081d37 JP |
221 | is_increasing = 1; |
222 | } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) { | |
223 | is_increasing = 0; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Subtracts threshold so a high sensor that just passes the threshold | |
228 | * won't skew the calculated absolute coordinate. Fixes an issue | |
229 | * where slowly moving the mouse would occassionaly jump a number of | |
230 | * pixels (let me restate--slowly moving the mouse makes this issue | |
231 | * most apparent). | |
232 | */ | |
233 | pcum += (xy_sensors[i] - threshold) * i; | |
234 | psum += (xy_sensors[i] - threshold); | |
f7214ff4 SP |
235 | } |
236 | ||
237 | if (psum > 0) { | |
238 | *z = psum; | |
239 | return pcum * fact / psum; | |
240 | } | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static inline void atp_report_fingers(struct input_dev *input, int fingers) | |
246 | { | |
247 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); | |
248 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); | |
249 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); | |
250 | } | |
251 | ||
7d12e780 | 252 | static void atp_complete(struct urb* urb) |
f7214ff4 SP |
253 | { |
254 | int x, y, x_z, y_z, x_f, y_f; | |
e1e02c9f | 255 | int retval, i, j; |
f7214ff4 SP |
256 | struct atp *dev = urb->context; |
257 | ||
258 | switch (urb->status) { | |
259 | case 0: | |
260 | /* success */ | |
261 | break; | |
e1e02c9f MH |
262 | case -EOVERFLOW: |
263 | if(!dev->overflowwarn) { | |
264 | printk("appletouch: OVERFLOW with data " | |
265 | "length %d, actual length is %d\n", | |
266 | dev->datalen, dev->urb->actual_length); | |
267 | dev->overflowwarn = 1; | |
268 | } | |
f7214ff4 SP |
269 | case -ECONNRESET: |
270 | case -ENOENT: | |
271 | case -ESHUTDOWN: | |
272 | /* This urb is terminated, clean up */ | |
273 | dbg("%s - urb shutting down with status: %d", | |
274 | __FUNCTION__, urb->status); | |
275 | return; | |
276 | default: | |
277 | dbg("%s - nonzero urb status received: %d", | |
278 | __FUNCTION__, urb->status); | |
279 | goto exit; | |
280 | } | |
281 | ||
282 | /* drop incomplete datasets */ | |
e1e02c9f | 283 | if (dev->urb->actual_length != dev->datalen) { |
9effa978 NB |
284 | dprintk("appletouch: incomplete data package" |
285 | " (first byte: %d, length: %d).\n", | |
286 | dev->data[0], dev->urb->actual_length); | |
f7214ff4 SP |
287 | goto exit; |
288 | } | |
289 | ||
290 | /* reorder the sensors values */ | |
9effa978 NB |
291 | if (atp_is_geyser_3(dev)) { |
292 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); | |
293 | ||
294 | /* | |
295 | * The values are laid out like this: | |
296 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | |
297 | * '-' is an unused value. | |
298 | */ | |
299 | ||
300 | /* read X values */ | |
301 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
302 | dev->xy_cur[i] = dev->data[j + 1]; | |
303 | dev->xy_cur[i + 1] = dev->data[j + 2]; | |
304 | } | |
305 | /* read Y values */ | |
306 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
307 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | |
308 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | |
309 | } | |
310 | } else if (atp_is_geyser_2(dev)) { | |
e1e02c9f MH |
311 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
312 | ||
313 | /* | |
314 | * The values are laid out like this: | |
315 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | |
316 | * '-' is an unused value. | |
317 | */ | |
318 | ||
319 | /* read X values */ | |
320 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
321 | dev->xy_cur[i] = dev->data[j]; | |
322 | dev->xy_cur[i + 1] = dev->data[j + 1]; | |
323 | } | |
324 | ||
325 | /* read Y values */ | |
326 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
327 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | |
328 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | |
329 | } | |
330 | } else { | |
331 | for (i = 0; i < 8; i++) { | |
332 | /* X values */ | |
333 | dev->xy_cur[i ] = dev->data[5 * i + 2]; | |
334 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; | |
335 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | |
336 | if (i < 2) | |
337 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | |
338 | ||
339 | /* Y values */ | |
340 | dev->xy_cur[i + 26] = dev->data[5 * i + 1]; | |
341 | dev->xy_cur[i + 34] = dev->data[5 * i + 3]; | |
342 | } | |
f7214ff4 SP |
343 | } |
344 | ||
345 | dbg_dump("sample", dev->xy_cur); | |
346 | ||
347 | if (!dev->valid) { | |
348 | /* first sample */ | |
349 | dev->valid = 1; | |
350 | dev->x_old = dev->y_old = -1; | |
351 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
352 | ||
9effa978 NB |
353 | if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ |
354 | goto exit; | |
355 | ||
e1e02c9f MH |
356 | /* 17" Powerbooks have extra X sensors */ |
357 | for (i = (atp_is_geyser_2(dev)?15:16); i < ATP_XSENSORS; i++) { | |
358 | if (!dev->xy_cur[i]) continue; | |
359 | ||
360 | printk("appletouch: 17\" model detected.\n"); | |
361 | if(atp_is_geyser_2(dev)) | |
362 | input_set_abs_params(dev->input, ABS_X, 0, | |
363 | (20 - 1) * | |
364 | ATP_XFACT - 1, | |
365 | ATP_FUZZ, 0); | |
366 | else | |
c5b7c7c3 DT |
367 | input_set_abs_params(dev->input, ABS_X, 0, |
368 | (ATP_XSENSORS - 1) * | |
f7214ff4 SP |
369 | ATP_XFACT - 1, |
370 | ATP_FUZZ, 0); | |
e1e02c9f MH |
371 | |
372 | break; | |
373 | } | |
f7214ff4 SP |
374 | |
375 | goto exit; | |
376 | } | |
377 | ||
378 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | |
379 | /* accumulate the change */ | |
380 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; | |
381 | dev->xy_acc[i] -= change; | |
382 | ||
383 | /* prevent down drifting */ | |
384 | if (dev->xy_acc[i] < 0) | |
385 | dev->xy_acc[i] = 0; | |
386 | } | |
387 | ||
388 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
389 | ||
390 | dbg_dump("accumulator", dev->xy_acc); | |
391 | ||
392 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
393 | ATP_XFACT, &x_z, &x_f); | |
394 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, | |
395 | ATP_YFACT, &y_z, &y_f); | |
396 | ||
397 | if (x && y) { | |
398 | if (dev->x_old != -1) { | |
399 | x = (dev->x_old * 3 + x) >> 2; | |
400 | y = (dev->y_old * 3 + y) >> 2; | |
401 | dev->x_old = x; | |
402 | dev->y_old = y; | |
403 | ||
404 | if (debug > 1) | |
405 | printk("appletouch: X: %3d Y: %3d " | |
406 | "Xz: %3d Yz: %3d\n", | |
407 | x, y, x_z, y_z); | |
408 | ||
c5b7c7c3 DT |
409 | input_report_key(dev->input, BTN_TOUCH, 1); |
410 | input_report_abs(dev->input, ABS_X, x); | |
411 | input_report_abs(dev->input, ABS_Y, y); | |
412 | input_report_abs(dev->input, ABS_PRESSURE, | |
f7214ff4 | 413 | min(ATP_PRESSURE, x_z + y_z)); |
c5b7c7c3 | 414 | atp_report_fingers(dev->input, max(x_f, y_f)); |
f7214ff4 SP |
415 | } |
416 | dev->x_old = x; | |
417 | dev->y_old = y; | |
418 | } | |
419 | else if (!x && !y) { | |
420 | ||
421 | dev->x_old = dev->y_old = -1; | |
c5b7c7c3 DT |
422 | input_report_key(dev->input, BTN_TOUCH, 0); |
423 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
424 | atp_report_fingers(dev->input, 0); | |
f7214ff4 SP |
425 | |
426 | /* reset the accumulator on release */ | |
427 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
428 | } | |
429 | ||
e1e02c9f MH |
430 | input_report_key(dev->input, BTN_LEFT, |
431 | !!dev->data[dev->datalen - 1]); | |
f7214ff4 | 432 | |
c5b7c7c3 | 433 | input_sync(dev->input); |
f7214ff4 SP |
434 | |
435 | exit: | |
436 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
437 | if (retval) { | |
438 | err("%s - usb_submit_urb failed with result %d", | |
439 | __FUNCTION__, retval); | |
440 | } | |
441 | } | |
442 | ||
443 | static int atp_open(struct input_dev *input) | |
444 | { | |
445 | struct atp *dev = input->private; | |
446 | ||
447 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
448 | return -EIO; | |
449 | ||
450 | dev->open = 1; | |
451 | return 0; | |
452 | } | |
453 | ||
454 | static void atp_close(struct input_dev *input) | |
455 | { | |
456 | struct atp *dev = input->private; | |
457 | ||
458 | usb_kill_urb(dev->urb); | |
459 | dev->open = 0; | |
460 | } | |
461 | ||
462 | static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id) | |
463 | { | |
c5b7c7c3 DT |
464 | struct atp *dev; |
465 | struct input_dev *input_dev; | |
466 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
467 | struct usb_host_interface *iface_desc; |
468 | struct usb_endpoint_descriptor *endpoint; | |
469 | int int_in_endpointAddr = 0; | |
470 | int i, retval = -ENOMEM; | |
471 | ||
f7214ff4 SP |
472 | |
473 | /* set up the endpoint information */ | |
474 | /* use only the first interrupt-in endpoint */ | |
475 | iface_desc = iface->cur_altsetting; | |
476 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
477 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 478 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
479 | /* we found an interrupt in endpoint */ |
480 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
481 | break; | |
482 | } | |
483 | } | |
484 | if (!int_in_endpointAddr) { | |
f7214ff4 | 485 | err("Could not find int-in endpoint"); |
c5b7c7c3 | 486 | return -EIO; |
f7214ff4 SP |
487 | } |
488 | ||
c5b7c7c3 DT |
489 | /* allocate memory for our device state and initialize it */ |
490 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
491 | input_dev = input_allocate_device(); | |
492 | if (!dev || !input_dev) { | |
493 | err("Out of memory"); | |
494 | goto err_free_devs; | |
495 | } | |
496 | ||
497 | dev->udev = udev; | |
498 | dev->input = input_dev; | |
e1e02c9f | 499 | dev->overflowwarn = 0; |
9effa978 NB |
500 | if (atp_is_geyser_3(dev)) |
501 | dev->datalen = 64; | |
502 | else if (atp_is_geyser_2(dev)) | |
503 | dev->datalen = 64; | |
504 | else | |
505 | dev->datalen = 81; | |
506 | ||
507 | if (atp_is_geyser_3(dev)) { | |
508 | /* | |
509 | * By default Geyser 3 device sends standard USB HID mouse | |
510 | * packets (Report ID 2). This code changes device mode, so it | |
511 | * sends raw sensor reports (Report ID 5). | |
512 | */ | |
513 | char data[8]; | |
514 | int size; | |
515 | ||
516 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
517 | ATP_GEYSER3_MODE_READ_REQUEST_ID, | |
518 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
519 | ATP_GEYSER3_MODE_REQUEST_VALUE, | |
520 | ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); | |
521 | ||
522 | if (size != 8) { | |
523 | err("Could not do mode read request from device" | |
524 | " (Geyser 3 mode)"); | |
525 | goto err_free_devs; | |
526 | } | |
527 | ||
528 | /* Apply the mode switch */ | |
529 | data[0] = ATP_GEYSER3_MODE_VENDOR_VALUE; | |
530 | ||
531 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
532 | ATP_GEYSER3_MODE_WRITE_REQUEST_ID, | |
533 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
534 | ATP_GEYSER3_MODE_REQUEST_VALUE, | |
535 | ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); | |
536 | ||
537 | if (size != 8) { | |
538 | err("Could not do mode write request to device" | |
539 | " (Geyser 3 mode)"); | |
540 | goto err_free_devs; | |
541 | } | |
542 | printk("appletouch Geyser 3 inited.\n"); | |
543 | } | |
f7214ff4 SP |
544 | |
545 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); | |
546 | if (!dev->urb) { | |
547 | retval = -ENOMEM; | |
c5b7c7c3 | 548 | goto err_free_devs; |
f7214ff4 | 549 | } |
c5b7c7c3 | 550 | |
e1e02c9f | 551 | dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, |
f7214ff4 SP |
552 | &dev->urb->transfer_dma); |
553 | if (!dev->data) { | |
554 | retval = -ENOMEM; | |
c5b7c7c3 | 555 | goto err_free_urb; |
f7214ff4 | 556 | } |
c5b7c7c3 DT |
557 | |
558 | usb_fill_int_urb(dev->urb, udev, | |
559 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
e1e02c9f | 560 | dev->data, dev->datalen, atp_complete, dev, 1); |
f7214ff4 | 561 | |
c5b7c7c3 DT |
562 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
563 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
564 | ||
565 | input_dev->name = "appletouch"; | |
566 | input_dev->phys = dev->phys; | |
567 | usb_to_input_id(dev->udev, &input_dev->id); | |
568 | input_dev->cdev.dev = &iface->dev; | |
f7214ff4 | 569 | |
c5b7c7c3 DT |
570 | input_dev->private = dev; |
571 | input_dev->open = atp_open; | |
572 | input_dev->close = atp_close; | |
f7214ff4 | 573 | |
c5b7c7c3 | 574 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 575 | |
9effa978 NB |
576 | if (atp_is_geyser_3(dev)) { |
577 | /* | |
578 | * MacBook have 20 X sensors, 10 Y sensors | |
579 | */ | |
580 | input_set_abs_params(input_dev, ABS_X, 0, | |
581 | ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
582 | input_set_abs_params(input_dev, ABS_Y, 0, | |
583 | ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
584 | } else if (atp_is_geyser_2(dev)) { | |
e1e02c9f MH |
585 | /* |
586 | * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected | |
587 | * later. | |
588 | */ | |
589 | input_set_abs_params(input_dev, ABS_X, 0, | |
590 | ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
591 | input_set_abs_params(input_dev, ABS_Y, 0, | |
592 | ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
593 | } else { | |
594 | /* | |
595 | * 12" and 15" Powerbooks only have 16 x sensors, | |
596 | * 17" models are detected later. | |
597 | */ | |
598 | input_set_abs_params(input_dev, ABS_X, 0, | |
599 | (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); | |
600 | input_set_abs_params(input_dev, ABS_Y, 0, | |
601 | (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0); | |
602 | } | |
c5b7c7c3 | 603 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 604 | |
c5b7c7c3 DT |
605 | set_bit(EV_KEY, input_dev->evbit); |
606 | set_bit(BTN_TOUCH, input_dev->keybit); | |
607 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
608 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
609 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
610 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 611 | |
c5b7c7c3 | 612 | input_register_device(dev->input); |
f7214ff4 | 613 | |
c5b7c7c3 DT |
614 | /* save our data pointer in this interface device */ |
615 | usb_set_intfdata(iface, dev); | |
f7214ff4 SP |
616 | |
617 | return 0; | |
618 | ||
c5b7c7c3 | 619 | err_free_urb: |
f7214ff4 | 620 | usb_free_urb(dev->urb); |
c5b7c7c3 | 621 | err_free_devs: |
f7214ff4 | 622 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 623 | kfree(dev); |
c5b7c7c3 | 624 | input_free_device(input_dev); |
f7214ff4 SP |
625 | return retval; |
626 | } | |
627 | ||
628 | static void atp_disconnect(struct usb_interface *iface) | |
629 | { | |
630 | struct atp *dev = usb_get_intfdata(iface); | |
631 | ||
632 | usb_set_intfdata(iface, NULL); | |
633 | if (dev) { | |
634 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 635 | input_unregister_device(dev->input); |
e1e02c9f | 636 | usb_buffer_free(dev->udev, dev->datalen, |
f7214ff4 | 637 | dev->data, dev->urb->transfer_dma); |
7af569ab | 638 | usb_free_urb(dev->urb); |
f7214ff4 SP |
639 | kfree(dev); |
640 | } | |
641 | printk(KERN_INFO "input: appletouch disconnected\n"); | |
642 | } | |
643 | ||
644 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) | |
645 | { | |
646 | struct atp *dev = usb_get_intfdata(iface); | |
647 | usb_kill_urb(dev->urb); | |
648 | dev->valid = 0; | |
649 | return 0; | |
650 | } | |
651 | ||
652 | static int atp_resume(struct usb_interface *iface) | |
653 | { | |
654 | struct atp *dev = usb_get_intfdata(iface); | |
655 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
656 | return -EIO; | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | static struct usb_driver atp_driver = { | |
f7214ff4 SP |
662 | .name = "appletouch", |
663 | .probe = atp_probe, | |
664 | .disconnect = atp_disconnect, | |
665 | .suspend = atp_suspend, | |
666 | .resume = atp_resume, | |
667 | .id_table = atp_table, | |
668 | }; | |
669 | ||
670 | static int __init atp_init(void) | |
671 | { | |
672 | return usb_register(&atp_driver); | |
673 | } | |
674 | ||
675 | static void __exit atp_exit(void) | |
676 | { | |
677 | usb_deregister(&atp_driver); | |
678 | } | |
679 | ||
680 | module_init(atp_init); | |
681 | module_exit(atp_exit); |