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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) | |
7dce869f | 5 | * Copyright (C) 2005-2008 Johannes Berg (johannes@sipsolutions.net) |
f7214ff4 SP |
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) |
7dce869f | 11 | * Copyright (C) 2007-2008 Sven Anders (anders@anduras.de) |
f7214ff4 SP |
12 | * |
13 | * Thanks to Alex Harper <basilisk@foobox.net> for his inputs. | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | * | |
29 | */ | |
30 | ||
f7214ff4 SP |
31 | #include <linux/kernel.h> |
32 | #include <linux/errno.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/module.h> | |
ae0dadcf | 36 | #include <linux/usb/input.h> |
f7214ff4 | 37 | |
e9542dff SA |
38 | /* Type of touchpad */ |
39 | enum atp_touchpad_type { | |
40 | ATP_FOUNTAIN, | |
41 | ATP_GEYSER1, | |
42 | ATP_GEYSER2, | |
43 | ATP_GEYSER3, | |
44 | ATP_GEYSER4 | |
45 | }; | |
0035a1dc | 46 | |
e9542dff SA |
47 | #define ATP_DEVICE(prod, type) \ |
48 | { \ | |
c5b7c7c3 | 49 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ |
f7214ff4 SP |
50 | USB_DEVICE_ID_MATCH_INT_CLASS | \ |
51 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ | |
e9542dff | 52 | .idVendor = 0x05ac, /* Apple */ \ |
f7214ff4 SP |
53 | .idProduct = (prod), \ |
54 | .bInterfaceClass = 0x03, \ | |
e9542dff SA |
55 | .bInterfaceProtocol = 0x02, \ |
56 | .driver_info = ATP_ ## type, \ | |
57 | } | |
58 | ||
59 | /* | |
60 | * Table of devices (Product IDs) that work with this driver. | |
61 | * (The names come from Info.plist in AppleUSBTrackpad.kext, | |
62 | * According to Info.plist Geyser IV is the same as Geyser III.) | |
63 | */ | |
f7214ff4 | 64 | |
f7214ff4 | 65 | static struct usb_device_id atp_table [] = { |
7dce869f | 66 | /* PowerBooks Feb 2005, iBooks G4 */ |
e9542dff SA |
67 | ATP_DEVICE(0x020e, FOUNTAIN), /* FOUNTAIN ANSI */ |
68 | ATP_DEVICE(0x020f, FOUNTAIN), /* FOUNTAIN ISO */ | |
69 | ATP_DEVICE(0x030a, FOUNTAIN), /* FOUNTAIN TP ONLY */ | |
70 | ATP_DEVICE(0x030b, GEYSER1), /* GEYSER 1 TP ONLY */ | |
e1e02c9f MH |
71 | |
72 | /* PowerBooks Oct 2005 */ | |
e9542dff SA |
73 | ATP_DEVICE(0x0214, GEYSER2), /* GEYSER 2 ANSI */ |
74 | ATP_DEVICE(0x0215, GEYSER2), /* GEYSER 2 ISO */ | |
75 | ATP_DEVICE(0x0216, GEYSER2), /* GEYSER 2 JIS */ | |
e1e02c9f | 76 | |
009ad0e7 | 77 | /* Core Duo MacBook & MacBook Pro */ |
e9542dff SA |
78 | ATP_DEVICE(0x0217, GEYSER3), /* GEYSER 3 ANSI */ |
79 | ATP_DEVICE(0x0218, GEYSER3), /* GEYSER 3 ISO */ | |
80 | ATP_DEVICE(0x0219, GEYSER3), /* GEYSER 3 JIS */ | |
9effa978 | 81 | |
009ad0e7 | 82 | /* Core2 Duo MacBook & MacBook Pro */ |
e9542dff SA |
83 | ATP_DEVICE(0x021a, GEYSER4), /* GEYSER 4 ANSI */ |
84 | ATP_DEVICE(0x021b, GEYSER4), /* GEYSER 4 ISO */ | |
85 | ATP_DEVICE(0x021c, GEYSER4), /* GEYSER 4 JIS */ | |
009ad0e7 | 86 | |
7dce869f | 87 | /* Core2 Duo MacBook3,1 */ |
e9542dff SA |
88 | ATP_DEVICE(0x0229, GEYSER4), /* GEYSER 4 HF ANSI */ |
89 | ATP_DEVICE(0x022a, GEYSER4), /* GEYSER 4 HF ISO */ | |
90 | ATP_DEVICE(0x022b, GEYSER4), /* GEYSER 4 HF JIS */ | |
0035a1dc | 91 | |
e1e02c9f MH |
92 | /* Terminating entry */ |
93 | { } | |
f7214ff4 | 94 | }; |
7dce869f | 95 | MODULE_DEVICE_TABLE(usb, atp_table); |
f7214ff4 | 96 | |
f7214ff4 SP |
97 | /* |
98 | * number of sensors. Note that only 16 instead of 26 X (horizontal) | |
99 | * sensors exist on 12" and 15" PowerBooks. All models have 16 Y | |
100 | * (vertical) sensors. | |
101 | */ | |
102 | #define ATP_XSENSORS 26 | |
103 | #define ATP_YSENSORS 16 | |
104 | ||
105 | /* amount of fuzz this touchpad generates */ | |
106 | #define ATP_FUZZ 16 | |
107 | ||
108 | /* maximum pressure this driver will report */ | |
109 | #define ATP_PRESSURE 300 | |
110 | /* | |
111 | * multiplication factor for the X and Y coordinates. | |
112 | * We try to keep the touchpad aspect ratio while still doing only simple | |
113 | * arithmetics. | |
114 | * The factors below give coordinates like: | |
e9542dff SA |
115 | * |
116 | * 0 <= x < 960 on 12" and 15" Powerbooks | |
117 | * 0 <= x < 1600 on 17" Powerbooks and 17" MacBook Pro | |
118 | * 0 <= x < 1216 on MacBooks and 15" MacBook Pro | |
119 | * | |
120 | * 0 <= y < 646 on all Powerbooks | |
121 | * 0 <= y < 774 on all MacBooks | |
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 | ||
2a3e480d DT |
132 | /* Geyser initialization constants */ |
133 | #define ATP_GEYSER_MODE_READ_REQUEST_ID 1 | |
134 | #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9 | |
135 | #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300 | |
136 | #define ATP_GEYSER_MODE_REQUEST_INDEX 0 | |
137 | #define ATP_GEYSER_MODE_VENDOR_VALUE 0x04 | |
9effa978 | 138 | |
f7214ff4 SP |
139 | /* Structure to hold all of our device specific stuff */ |
140 | struct atp { | |
c5b7c7c3 | 141 | char phys[64]; |
7dce869f JB |
142 | struct usb_device *udev; /* usb device */ |
143 | struct urb *urb; /* usb request block */ | |
144 | signed char *data; /* transferred data */ | |
145 | struct input_dev *input; /* input dev */ | |
e9542dff | 146 | enum atp_touchpad_type type; /* type of touchpad */ |
7dce869f JB |
147 | bool open; |
148 | bool valid; /* are the samples valid? */ | |
149 | bool size_detect_done; | |
150 | bool overflow_warned; | |
f7214ff4 SP |
151 | int x_old; /* last reported x/y, */ |
152 | int y_old; /* used for smoothing */ | |
f7214ff4 | 153 | signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; |
f7214ff4 | 154 | signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; |
f7214ff4 | 155 | int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; |
7dce869f JB |
156 | int datalen; /* size of USB transfer */ |
157 | int idlecount; /* number of empty packets */ | |
158 | struct work_struct work; | |
f7214ff4 SP |
159 | }; |
160 | ||
161 | #define dbg_dump(msg, tab) \ | |
162 | if (debug > 1) { \ | |
7dce869f JB |
163 | int __i; \ |
164 | printk(KERN_DEBUG "appletouch: %s", msg); \ | |
165 | for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \ | |
166 | printk(" %02x", tab[__i]); \ | |
c5b7c7c3 | 167 | printk("\n"); \ |
f7214ff4 SP |
168 | } |
169 | ||
c5b7c7c3 | 170 | #define dprintk(format, a...) \ |
f7214ff4 | 171 | do { \ |
7dce869f JB |
172 | if (debug) \ |
173 | printk(KERN_DEBUG format, ##a); \ | |
f7214ff4 SP |
174 | } while (0) |
175 | ||
7dce869f JB |
176 | MODULE_AUTHOR("Johannes Berg"); |
177 | MODULE_AUTHOR("Stelian Pop"); | |
178 | MODULE_AUTHOR("Frank Arnold"); | |
179 | MODULE_AUTHOR("Michael Hanselmann"); | |
180 | MODULE_AUTHOR("Sven Anders"); | |
181 | MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver"); | |
f7214ff4 SP |
182 | MODULE_LICENSE("GPL"); |
183 | ||
00081d37 JP |
184 | /* |
185 | * Make the threshold a module parameter | |
186 | */ | |
187 | static int threshold = ATP_THRESHOLD; | |
188 | module_param(threshold, int, 0644); | |
7dce869f JB |
189 | MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor" |
190 | " (the trackpad has many of these sensors)" | |
191 | " less than this value."); | |
00081d37 | 192 | |
7dce869f | 193 | static int debug; |
f7214ff4 SP |
194 | module_param(debug, int, 0644); |
195 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
196 | ||
5a6eb676 | 197 | /* |
2a3e480d | 198 | * By default newer Geyser devices send standard USB HID mouse |
5a6eb676 SS |
199 | * packets (Report ID 2). This code changes device mode, so it |
200 | * sends raw sensor reports (Report ID 5). | |
201 | */ | |
2a3e480d | 202 | static int atp_geyser_init(struct usb_device *udev) |
5a6eb676 SS |
203 | { |
204 | char data[8]; | |
205 | int size; | |
7dce869f | 206 | int i; |
5a6eb676 SS |
207 | |
208 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
2a3e480d | 209 | ATP_GEYSER_MODE_READ_REQUEST_ID, |
5a6eb676 | 210 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d DT |
211 | ATP_GEYSER_MODE_REQUEST_VALUE, |
212 | ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000); | |
5a6eb676 SS |
213 | |
214 | if (size != 8) { | |
7dce869f JB |
215 | dprintk("atp_geyser_init: read error\n"); |
216 | for (i = 0; i < 8; i++) | |
217 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
218 | ||
219 | err("Failed to read mode from device."); | |
5a6eb676 SS |
220 | return -EIO; |
221 | } | |
222 | ||
223 | /* Apply the mode switch */ | |
2a3e480d | 224 | data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; |
5a6eb676 SS |
225 | |
226 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
2a3e480d | 227 | ATP_GEYSER_MODE_WRITE_REQUEST_ID, |
5a6eb676 | 228 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d DT |
229 | ATP_GEYSER_MODE_REQUEST_VALUE, |
230 | ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000); | |
5a6eb676 SS |
231 | |
232 | if (size != 8) { | |
7dce869f JB |
233 | dprintk("atp_geyser_init: write error\n"); |
234 | for (i = 0; i < 8; i++) | |
235 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
236 | ||
237 | err("Failed to request geyser raw mode"); | |
5a6eb676 SS |
238 | return -EIO; |
239 | } | |
240 | return 0; | |
241 | } | |
242 | ||
2a3e480d DT |
243 | /* |
244 | * Reinitialise the device. This usually stops stream of empty packets | |
245 | * coming from it. | |
246 | */ | |
5a6eb676 SS |
247 | static void atp_reinit(struct work_struct *work) |
248 | { | |
249 | struct atp *dev = container_of(work, struct atp, work); | |
250 | struct usb_device *udev = dev->udev; | |
2a3e480d | 251 | int retval; |
5a6eb676 | 252 | |
7dce869f | 253 | dprintk("appletouch: putting appletouch to sleep (reinit)\n"); |
5a6eb676 | 254 | dev->idlecount = 0; |
2a3e480d DT |
255 | |
256 | atp_geyser_init(udev); | |
257 | ||
258 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
7dce869f JB |
259 | if (retval) |
260 | err("atp_reinit: usb_submit_urb failed with error %d", | |
261 | retval); | |
5a6eb676 SS |
262 | } |
263 | ||
f7214ff4 SP |
264 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, |
265 | int *z, int *fingers) | |
266 | { | |
267 | int i; | |
268 | /* values to calculate mean */ | |
269 | int pcum = 0, psum = 0; | |
00081d37 | 270 | int is_increasing = 0; |
f7214ff4 SP |
271 | |
272 | *fingers = 0; | |
273 | ||
274 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
275 | if (xy_sensors[i] < threshold) { |
276 | if (is_increasing) | |
277 | is_increasing = 0; | |
278 | ||
f7214ff4 | 279 | continue; |
00081d37 JP |
280 | } |
281 | ||
282 | /* | |
283 | * Makes the finger detection more versatile. For example, | |
284 | * two fingers with no gap will be detected. Also, my | |
285 | * tests show it less likely to have intermittent loss | |
286 | * of multiple finger readings while moving around (scrolling). | |
287 | * | |
288 | * Changes the multiple finger detection to counting humps on | |
289 | * sensors (transitions from nonincreasing to increasing) | |
290 | * instead of counting transitions from low sensors (no | |
291 | * finger reading) to high sensors (finger above | |
292 | * sensor) | |
293 | * | |
294 | * - Jason Parekh <jasonparekh@gmail.com> | |
295 | */ | |
7dce869f JB |
296 | if (i < 1 || |
297 | (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { | |
f7214ff4 | 298 | (*fingers)++; |
00081d37 JP |
299 | is_increasing = 1; |
300 | } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) { | |
301 | is_increasing = 0; | |
302 | } | |
303 | ||
304 | /* | |
7dce869f JB |
305 | * Subtracts threshold so a high sensor that just passes the |
306 | * threshold won't skew the calculated absolute coordinate. | |
307 | * Fixes an issue where slowly moving the mouse would | |
308 | * occasionally jump a number of pixels (slowly moving the | |
309 | * finger makes this issue most apparent.) | |
00081d37 JP |
310 | */ |
311 | pcum += (xy_sensors[i] - threshold) * i; | |
312 | psum += (xy_sensors[i] - threshold); | |
f7214ff4 SP |
313 | } |
314 | ||
315 | if (psum > 0) { | |
316 | *z = psum; | |
317 | return pcum * fact / psum; | |
318 | } | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | static inline void atp_report_fingers(struct input_dev *input, int fingers) | |
324 | { | |
325 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); | |
326 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); | |
327 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); | |
328 | } | |
329 | ||
7dce869f | 330 | static void atp_complete(struct urb *urb) |
f7214ff4 SP |
331 | { |
332 | int x, y, x_z, y_z, x_f, y_f; | |
e1e02c9f | 333 | int retval, i, j; |
cb560737 | 334 | int key; |
f7214ff4 SP |
335 | struct atp *dev = urb->context; |
336 | ||
337 | switch (urb->status) { | |
338 | case 0: | |
339 | /* success */ | |
340 | break; | |
e1e02c9f | 341 | case -EOVERFLOW: |
7dce869f | 342 | if (!dev->overflow_warned) { |
2a3e480d | 343 | printk(KERN_WARNING "appletouch: OVERFLOW with data " |
e1e02c9f MH |
344 | "length %d, actual length is %d\n", |
345 | dev->datalen, dev->urb->actual_length); | |
7dce869f | 346 | dev->overflow_warned = true; |
e1e02c9f | 347 | } |
f7214ff4 SP |
348 | case -ECONNRESET: |
349 | case -ENOENT: | |
350 | case -ESHUTDOWN: | |
351 | /* This urb is terminated, clean up */ | |
7dce869f JB |
352 | dbg("atp_complete: urb shutting down with status: %d", |
353 | urb->status); | |
f7214ff4 SP |
354 | return; |
355 | default: | |
7dce869f JB |
356 | dbg("atp_complete: nonzero urb status received: %d", |
357 | urb->status); | |
f7214ff4 SP |
358 | goto exit; |
359 | } | |
360 | ||
361 | /* drop incomplete datasets */ | |
e1e02c9f | 362 | if (dev->urb->actual_length != dev->datalen) { |
9effa978 NB |
363 | dprintk("appletouch: incomplete data package" |
364 | " (first byte: %d, length: %d).\n", | |
365 | dev->data[0], dev->urb->actual_length); | |
f7214ff4 SP |
366 | goto exit; |
367 | } | |
368 | ||
369 | /* reorder the sensors values */ | |
e9542dff | 370 | if (dev->type == ATP_GEYSER3 || dev->type == ATP_GEYSER4) { |
9effa978 NB |
371 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
372 | ||
373 | /* | |
374 | * The values are laid out like this: | |
375 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | |
376 | * '-' is an unused value. | |
377 | */ | |
378 | ||
379 | /* read X values */ | |
380 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
381 | dev->xy_cur[i] = dev->data[j + 1]; | |
382 | dev->xy_cur[i + 1] = dev->data[j + 2]; | |
383 | } | |
384 | /* read Y values */ | |
385 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
386 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | |
387 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | |
388 | } | |
e9542dff | 389 | } else if (dev->type == ATP_GEYSER2) { |
e1e02c9f MH |
390 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
391 | ||
392 | /* | |
393 | * The values are laid out like this: | |
394 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | |
395 | * '-' is an unused value. | |
396 | */ | |
397 | ||
398 | /* read X values */ | |
399 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
400 | dev->xy_cur[i] = dev->data[j]; | |
401 | dev->xy_cur[i + 1] = dev->data[j + 1]; | |
402 | } | |
403 | ||
404 | /* read Y values */ | |
405 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
406 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | |
407 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | |
408 | } | |
409 | } else { | |
410 | for (i = 0; i < 8; i++) { | |
411 | /* X values */ | |
7dce869f | 412 | dev->xy_cur[i + 0] = dev->data[5 * i + 2]; |
e1e02c9f MH |
413 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; |
414 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | |
415 | if (i < 2) | |
416 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | |
417 | ||
418 | /* Y values */ | |
419 | dev->xy_cur[i + 26] = dev->data[5 * i + 1]; | |
420 | dev->xy_cur[i + 34] = dev->data[5 * i + 3]; | |
421 | } | |
f7214ff4 SP |
422 | } |
423 | ||
424 | dbg_dump("sample", dev->xy_cur); | |
425 | ||
426 | if (!dev->valid) { | |
427 | /* first sample */ | |
7dce869f | 428 | dev->valid = true; |
f7214ff4 SP |
429 | dev->x_old = dev->y_old = -1; |
430 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
431 | ||
2a3e480d | 432 | if (dev->size_detect_done || |
e9542dff | 433 | dev->type == ATP_GEYSER3) /* No 17" Macbooks (yet) */ |
9effa978 NB |
434 | goto exit; |
435 | ||
e1e02c9f | 436 | /* 17" Powerbooks have extra X sensors */ |
e9542dff | 437 | for (i = (dev->type == ATP_GEYSER2 ? 15 : 16); |
7dce869f | 438 | i < ATP_XSENSORS; i++) { |
2a3e480d DT |
439 | if (!dev->xy_cur[i]) |
440 | continue; | |
e1e02c9f | 441 | |
2a3e480d | 442 | printk(KERN_INFO "appletouch: 17\" model detected.\n"); |
e9542dff | 443 | if (dev->type == ATP_GEYSER2) |
e1e02c9f MH |
444 | input_set_abs_params(dev->input, ABS_X, 0, |
445 | (20 - 1) * | |
446 | ATP_XFACT - 1, | |
447 | ATP_FUZZ, 0); | |
448 | else | |
c5b7c7c3 DT |
449 | input_set_abs_params(dev->input, ABS_X, 0, |
450 | (ATP_XSENSORS - 1) * | |
f7214ff4 SP |
451 | ATP_XFACT - 1, |
452 | ATP_FUZZ, 0); | |
e1e02c9f MH |
453 | break; |
454 | } | |
f7214ff4 | 455 | |
2a3e480d | 456 | dev->size_detect_done = 1; |
f7214ff4 SP |
457 | goto exit; |
458 | } | |
459 | ||
460 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | |
461 | /* accumulate the change */ | |
462 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; | |
463 | dev->xy_acc[i] -= change; | |
464 | ||
465 | /* prevent down drifting */ | |
466 | if (dev->xy_acc[i] < 0) | |
467 | dev->xy_acc[i] = 0; | |
468 | } | |
469 | ||
470 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
471 | ||
472 | dbg_dump("accumulator", dev->xy_acc); | |
473 | ||
474 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
475 | ATP_XFACT, &x_z, &x_f); | |
476 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, | |
477 | ATP_YFACT, &y_z, &y_f); | |
cb560737 | 478 | key = dev->data[dev->datalen - 1] & 1; |
f7214ff4 SP |
479 | |
480 | if (x && y) { | |
481 | if (dev->x_old != -1) { | |
482 | x = (dev->x_old * 3 + x) >> 2; | |
483 | y = (dev->y_old * 3 + y) >> 2; | |
484 | dev->x_old = x; | |
485 | dev->y_old = y; | |
486 | ||
487 | if (debug > 1) | |
2a3e480d | 488 | printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " |
f7214ff4 SP |
489 | "Xz: %3d Yz: %3d\n", |
490 | x, y, x_z, y_z); | |
491 | ||
c5b7c7c3 DT |
492 | input_report_key(dev->input, BTN_TOUCH, 1); |
493 | input_report_abs(dev->input, ABS_X, x); | |
494 | input_report_abs(dev->input, ABS_Y, y); | |
495 | input_report_abs(dev->input, ABS_PRESSURE, | |
f7214ff4 | 496 | min(ATP_PRESSURE, x_z + y_z)); |
c5b7c7c3 | 497 | atp_report_fingers(dev->input, max(x_f, y_f)); |
f7214ff4 SP |
498 | } |
499 | dev->x_old = x; | |
500 | dev->y_old = y; | |
5a6eb676 SS |
501 | |
502 | } else if (!x && !y) { | |
f7214ff4 SP |
503 | |
504 | dev->x_old = dev->y_old = -1; | |
c5b7c7c3 DT |
505 | input_report_key(dev->input, BTN_TOUCH, 0); |
506 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
507 | atp_report_fingers(dev->input, 0); | |
f7214ff4 SP |
508 | |
509 | /* reset the accumulator on release */ | |
510 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
937ad5c1 SS |
511 | } |
512 | ||
46249ea6 AE |
513 | input_report_key(dev->input, BTN_LEFT, key); |
514 | input_sync(dev->input); | |
515 | ||
2a3e480d DT |
516 | /* |
517 | * Many Geysers will continue to send packets continually after | |
518 | * the first touch unless reinitialised. Do so if it's been | |
519 | * idle for a while in order to avoid waking the kernel up | |
520 | * several hundred times a second. Re-initialization does not | |
521 | * work on Fountain touchpads. | |
522 | */ | |
e9542dff | 523 | if (dev->type != ATP_FOUNTAIN) { |
7dce869f JB |
524 | /* |
525 | * Button must not be pressed when entering suspend, | |
526 | * otherwise we will never release the button. | |
527 | */ | |
2a3e480d DT |
528 | if (!x && !y && !key) { |
529 | dev->idlecount++; | |
530 | if (dev->idlecount == 10) { | |
7dce869f | 531 | dev->valid = false; |
2a3e480d DT |
532 | schedule_work(&dev->work); |
533 | /* Don't resubmit urb here, wait for reinit */ | |
534 | return; | |
535 | } | |
536 | } else | |
537 | dev->idlecount = 0; | |
538 | } | |
f7214ff4 | 539 | |
7dce869f | 540 | exit: |
f7214ff4 | 541 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); |
7dce869f JB |
542 | if (retval) |
543 | err("atp_complete: usb_submit_urb failed with result %d", | |
544 | retval); | |
f7214ff4 SP |
545 | } |
546 | ||
547 | static int atp_open(struct input_dev *input) | |
548 | { | |
7791bdae | 549 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
550 | |
551 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
552 | return -EIO; | |
553 | ||
554 | dev->open = 1; | |
555 | return 0; | |
556 | } | |
557 | ||
558 | static void atp_close(struct input_dev *input) | |
559 | { | |
7791bdae | 560 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
561 | |
562 | usb_kill_urb(dev->urb); | |
5a6eb676 | 563 | cancel_work_sync(&dev->work); |
f7214ff4 SP |
564 | dev->open = 0; |
565 | } | |
566 | ||
90d95ef6 ON |
567 | static int atp_handle_geyser(struct atp *dev) |
568 | { | |
569 | struct usb_device *udev = dev->udev; | |
570 | ||
15439dd3 | 571 | if (dev->type != ATP_FOUNTAIN) { |
90d95ef6 ON |
572 | /* switch to raw sensor mode */ |
573 | if (atp_geyser_init(udev)) | |
574 | return -EIO; | |
575 | ||
576 | printk(KERN_INFO "appletouch: Geyser mode initialized.\n"); | |
577 | } | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
7dce869f JB |
582 | static int atp_probe(struct usb_interface *iface, |
583 | const struct usb_device_id *id) | |
f7214ff4 | 584 | { |
c5b7c7c3 DT |
585 | struct atp *dev; |
586 | struct input_dev *input_dev; | |
587 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
588 | struct usb_host_interface *iface_desc; |
589 | struct usb_endpoint_descriptor *endpoint; | |
590 | int int_in_endpointAddr = 0; | |
5014186d | 591 | int i, error = -ENOMEM; |
f7214ff4 SP |
592 | |
593 | /* set up the endpoint information */ | |
594 | /* use only the first interrupt-in endpoint */ | |
595 | iface_desc = iface->cur_altsetting; | |
596 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
597 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 598 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
599 | /* we found an interrupt in endpoint */ |
600 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
601 | break; | |
602 | } | |
603 | } | |
604 | if (!int_in_endpointAddr) { | |
f7214ff4 | 605 | err("Could not find int-in endpoint"); |
c5b7c7c3 | 606 | return -EIO; |
f7214ff4 SP |
607 | } |
608 | ||
c5b7c7c3 DT |
609 | /* allocate memory for our device state and initialize it */ |
610 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
611 | input_dev = input_allocate_device(); | |
612 | if (!dev || !input_dev) { | |
613 | err("Out of memory"); | |
614 | goto err_free_devs; | |
615 | } | |
616 | ||
617 | dev->udev = udev; | |
618 | dev->input = input_dev; | |
e9542dff | 619 | dev->type = id->driver_info; |
7dce869f | 620 | dev->overflow_warned = false; |
e9542dff | 621 | if (dev->type == ATP_FOUNTAIN || dev->type == ATP_GEYSER1) |
9effa978 | 622 | dev->datalen = 81; |
e9542dff SA |
623 | else |
624 | dev->datalen = 64; | |
9effa978 | 625 | |
f7214ff4 | 626 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); |
5014186d | 627 | if (!dev->urb) |
c5b7c7c3 | 628 | goto err_free_devs; |
c5b7c7c3 | 629 | |
e1e02c9f | 630 | dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, |
f7214ff4 | 631 | &dev->urb->transfer_dma); |
5014186d | 632 | if (!dev->data) |
c5b7c7c3 | 633 | goto err_free_urb; |
c5b7c7c3 DT |
634 | |
635 | usb_fill_int_urb(dev->urb, udev, | |
636 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
e1e02c9f | 637 | dev->data, dev->datalen, atp_complete, dev, 1); |
f7214ff4 | 638 | |
90d95ef6 ON |
639 | error = atp_handle_geyser(dev); |
640 | if (error) | |
641 | goto err_free_buffer; | |
642 | ||
c5b7c7c3 DT |
643 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
644 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
645 | ||
646 | input_dev->name = "appletouch"; | |
647 | input_dev->phys = dev->phys; | |
648 | usb_to_input_id(dev->udev, &input_dev->id); | |
c0f82d57 | 649 | input_dev->dev.parent = &iface->dev; |
f7214ff4 | 650 | |
7791bdae DT |
651 | input_set_drvdata(input_dev, dev); |
652 | ||
c5b7c7c3 DT |
653 | input_dev->open = atp_open; |
654 | input_dev->close = atp_close; | |
f7214ff4 | 655 | |
c5b7c7c3 | 656 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 657 | |
e9542dff | 658 | if (dev->type == ATP_GEYSER3 || dev->type == ATP_GEYSER4) { |
9effa978 NB |
659 | /* |
660 | * MacBook have 20 X sensors, 10 Y sensors | |
661 | */ | |
662 | input_set_abs_params(input_dev, ABS_X, 0, | |
663 | ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
664 | input_set_abs_params(input_dev, ABS_Y, 0, | |
665 | ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
e9542dff | 666 | } else if (dev->type == ATP_GEYSER2) { |
e1e02c9f MH |
667 | /* |
668 | * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected | |
669 | * later. | |
670 | */ | |
671 | input_set_abs_params(input_dev, ABS_X, 0, | |
672 | ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
673 | input_set_abs_params(input_dev, ABS_Y, 0, | |
674 | ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
675 | } else { | |
676 | /* | |
677 | * 12" and 15" Powerbooks only have 16 x sensors, | |
678 | * 17" models are detected later. | |
679 | */ | |
680 | input_set_abs_params(input_dev, ABS_X, 0, | |
7dce869f JB |
681 | (16 - 1) * ATP_XFACT - 1, |
682 | ATP_FUZZ, 0); | |
e1e02c9f | 683 | input_set_abs_params(input_dev, ABS_Y, 0, |
7dce869f JB |
684 | (ATP_YSENSORS - 1) * ATP_YFACT - 1, |
685 | ATP_FUZZ, 0); | |
e1e02c9f | 686 | } |
c5b7c7c3 | 687 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 688 | |
c5b7c7c3 DT |
689 | set_bit(EV_KEY, input_dev->evbit); |
690 | set_bit(BTN_TOUCH, input_dev->keybit); | |
691 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
692 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
693 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
694 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 695 | |
5014186d DT |
696 | error = input_register_device(dev->input); |
697 | if (error) | |
698 | goto err_free_buffer; | |
f7214ff4 | 699 | |
c5b7c7c3 DT |
700 | /* save our data pointer in this interface device */ |
701 | usb_set_intfdata(iface, dev); | |
f7214ff4 | 702 | |
5a6eb676 SS |
703 | INIT_WORK(&dev->work, atp_reinit); |
704 | ||
f7214ff4 SP |
705 | return 0; |
706 | ||
5014186d DT |
707 | err_free_buffer: |
708 | usb_buffer_free(dev->udev, dev->datalen, | |
709 | dev->data, dev->urb->transfer_dma); | |
c5b7c7c3 | 710 | err_free_urb: |
f7214ff4 | 711 | usb_free_urb(dev->urb); |
c5b7c7c3 | 712 | err_free_devs: |
f7214ff4 | 713 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 714 | kfree(dev); |
c5b7c7c3 | 715 | input_free_device(input_dev); |
5014186d | 716 | return error; |
f7214ff4 SP |
717 | } |
718 | ||
719 | static void atp_disconnect(struct usb_interface *iface) | |
720 | { | |
721 | struct atp *dev = usb_get_intfdata(iface); | |
722 | ||
723 | usb_set_intfdata(iface, NULL); | |
724 | if (dev) { | |
725 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 726 | input_unregister_device(dev->input); |
e1e02c9f | 727 | usb_buffer_free(dev->udev, dev->datalen, |
f7214ff4 | 728 | dev->data, dev->urb->transfer_dma); |
7af569ab | 729 | usb_free_urb(dev->urb); |
f7214ff4 SP |
730 | kfree(dev); |
731 | } | |
732 | printk(KERN_INFO "input: appletouch disconnected\n"); | |
733 | } | |
734 | ||
90d95ef6 ON |
735 | static int atp_recover(struct atp *dev) |
736 | { | |
737 | int error; | |
738 | ||
739 | error = atp_handle_geyser(dev); | |
740 | if (error) | |
741 | return error; | |
742 | ||
743 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
744 | return -EIO; | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
f7214ff4 SP |
749 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) |
750 | { | |
751 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 752 | |
f7214ff4 | 753 | usb_kill_urb(dev->urb); |
7dce869f | 754 | dev->valid = false; |
5a6eb676 | 755 | |
f7214ff4 SP |
756 | return 0; |
757 | } | |
758 | ||
759 | static int atp_resume(struct usb_interface *iface) | |
760 | { | |
761 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 762 | |
f7214ff4 SP |
763 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
764 | return -EIO; | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
90d95ef6 ON |
769 | static int atp_reset_resume(struct usb_interface *iface) |
770 | { | |
771 | struct atp *dev = usb_get_intfdata(iface); | |
772 | ||
773 | return atp_recover(dev); | |
774 | } | |
775 | ||
f7214ff4 | 776 | static struct usb_driver atp_driver = { |
f7214ff4 SP |
777 | .name = "appletouch", |
778 | .probe = atp_probe, | |
779 | .disconnect = atp_disconnect, | |
780 | .suspend = atp_suspend, | |
781 | .resume = atp_resume, | |
90d95ef6 | 782 | .reset_resume = atp_reset_resume, |
f7214ff4 SP |
783 | .id_table = atp_table, |
784 | }; | |
785 | ||
786 | static int __init atp_init(void) | |
787 | { | |
788 | return usb_register(&atp_driver); | |
789 | } | |
790 | ||
791 | static void __exit atp_exit(void) | |
792 | { | |
793 | usb_deregister(&atp_driver); | |
794 | } | |
795 | ||
796 | module_init(atp_init); | |
797 | module_exit(atp_exit); |