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) | |
7dce869f | 5 | * Copyright (C) 2005-2008 Johannes Berg (johannes@sipsolutions.net) |
09779678 | 6 | * Copyright (C) 2005-2008 Stelian Pop (stelian@popies.net) |
f7214ff4 SP |
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 | |
09779678 SP |
38 | /* |
39 | * Note: We try to keep the touchpad aspect ratio while still doing only | |
40 | * simple arithmetics: | |
41 | * 0 <= x <= (xsensors - 1) * xfact | |
42 | * 0 <= y <= (ysensors - 1) * yfact | |
43 | */ | |
44 | struct atp_info { | |
45 | int xsensors; /* number of X sensors */ | |
46 | int xsensors_17; /* 17" models have more sensors */ | |
47 | int ysensors; /* number of Y sensors */ | |
48 | int xfact; /* X multiplication factor */ | |
49 | int yfact; /* Y multiplication factor */ | |
50 | int datalen; /* size of USB transfers */ | |
51 | void (*callback)(struct urb *); /* callback function */ | |
52 | }; | |
53 | ||
54 | static void atp_complete_geyser_1_2(struct urb *urb); | |
55 | static void atp_complete_geyser_3_4(struct urb *urb); | |
56 | ||
57 | static const struct atp_info fountain_info = { | |
58 | .xsensors = 16, | |
59 | .xsensors_17 = 26, | |
60 | .ysensors = 16, | |
61 | .xfact = 64, | |
62 | .yfact = 43, | |
63 | .datalen = 81, | |
64 | .callback = atp_complete_geyser_1_2, | |
65 | }; | |
66 | ||
67 | static const struct atp_info geyser1_info = { | |
68 | .xsensors = 16, | |
69 | .xsensors_17 = 26, | |
70 | .ysensors = 16, | |
71 | .xfact = 64, | |
72 | .yfact = 43, | |
73 | .datalen = 81, | |
74 | .callback = atp_complete_geyser_1_2, | |
75 | }; | |
76 | ||
77 | static const struct atp_info geyser2_info = { | |
78 | .xsensors = 15, | |
79 | .xsensors_17 = 20, | |
80 | .ysensors = 9, | |
81 | .xfact = 64, | |
82 | .yfact = 43, | |
83 | .datalen = 64, | |
84 | .callback = atp_complete_geyser_1_2, | |
85 | }; | |
86 | ||
87 | static const struct atp_info geyser3_info = { | |
88 | .xsensors = 20, | |
89 | .ysensors = 10, | |
90 | .xfact = 64, | |
91 | .yfact = 64, | |
92 | .datalen = 64, | |
93 | .callback = atp_complete_geyser_3_4, | |
e9542dff | 94 | }; |
0035a1dc | 95 | |
09779678 SP |
96 | static const struct atp_info geyser4_info = { |
97 | .xsensors = 20, | |
98 | .ysensors = 10, | |
99 | .xfact = 64, | |
100 | .yfact = 64, | |
101 | .datalen = 64, | |
102 | .callback = atp_complete_geyser_3_4, | |
103 | }; | |
104 | ||
105 | #define ATP_DEVICE(prod, info) \ | |
e9542dff | 106 | { \ |
c5b7c7c3 | 107 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ |
f7214ff4 SP |
108 | USB_DEVICE_ID_MATCH_INT_CLASS | \ |
109 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ | |
e9542dff | 110 | .idVendor = 0x05ac, /* Apple */ \ |
f7214ff4 SP |
111 | .idProduct = (prod), \ |
112 | .bInterfaceClass = 0x03, \ | |
e9542dff | 113 | .bInterfaceProtocol = 0x02, \ |
09779678 | 114 | .driver_info = (unsigned long) &info, \ |
e9542dff SA |
115 | } |
116 | ||
117 | /* | |
118 | * Table of devices (Product IDs) that work with this driver. | |
119 | * (The names come from Info.plist in AppleUSBTrackpad.kext, | |
120 | * According to Info.plist Geyser IV is the same as Geyser III.) | |
121 | */ | |
f7214ff4 | 122 | |
09779678 | 123 | static struct usb_device_id atp_table[] = { |
7dce869f | 124 | /* PowerBooks Feb 2005, iBooks G4 */ |
09779678 SP |
125 | ATP_DEVICE(0x020e, fountain_info), /* FOUNTAIN ANSI */ |
126 | ATP_DEVICE(0x020f, fountain_info), /* FOUNTAIN ISO */ | |
127 | ATP_DEVICE(0x030a, fountain_info), /* FOUNTAIN TP ONLY */ | |
128 | ATP_DEVICE(0x030b, geyser1_info), /* GEYSER 1 TP ONLY */ | |
e1e02c9f MH |
129 | |
130 | /* PowerBooks Oct 2005 */ | |
09779678 SP |
131 | ATP_DEVICE(0x0214, geyser2_info), /* GEYSER 2 ANSI */ |
132 | ATP_DEVICE(0x0215, geyser2_info), /* GEYSER 2 ISO */ | |
133 | ATP_DEVICE(0x0216, geyser2_info), /* GEYSER 2 JIS */ | |
e1e02c9f | 134 | |
009ad0e7 | 135 | /* Core Duo MacBook & MacBook Pro */ |
09779678 SP |
136 | ATP_DEVICE(0x0217, geyser3_info), /* GEYSER 3 ANSI */ |
137 | ATP_DEVICE(0x0218, geyser3_info), /* GEYSER 3 ISO */ | |
138 | ATP_DEVICE(0x0219, geyser3_info), /* GEYSER 3 JIS */ | |
9effa978 | 139 | |
009ad0e7 | 140 | /* Core2 Duo MacBook & MacBook Pro */ |
09779678 SP |
141 | ATP_DEVICE(0x021a, geyser4_info), /* GEYSER 4 ANSI */ |
142 | ATP_DEVICE(0x021b, geyser4_info), /* GEYSER 4 ISO */ | |
143 | ATP_DEVICE(0x021c, geyser4_info), /* GEYSER 4 JIS */ | |
009ad0e7 | 144 | |
7dce869f | 145 | /* Core2 Duo MacBook3,1 */ |
09779678 SP |
146 | ATP_DEVICE(0x0229, geyser4_info), /* GEYSER 4 HF ANSI */ |
147 | ATP_DEVICE(0x022a, geyser4_info), /* GEYSER 4 HF ISO */ | |
148 | ATP_DEVICE(0x022b, geyser4_info), /* GEYSER 4 HF JIS */ | |
0035a1dc | 149 | |
e1e02c9f MH |
150 | /* Terminating entry */ |
151 | { } | |
f7214ff4 | 152 | }; |
7dce869f | 153 | MODULE_DEVICE_TABLE(usb, atp_table); |
f7214ff4 | 154 | |
09779678 | 155 | /* maximum number of sensors */ |
f7214ff4 SP |
156 | #define ATP_XSENSORS 26 |
157 | #define ATP_YSENSORS 16 | |
158 | ||
159 | /* amount of fuzz this touchpad generates */ | |
160 | #define ATP_FUZZ 16 | |
161 | ||
162 | /* maximum pressure this driver will report */ | |
163 | #define ATP_PRESSURE 300 | |
f7214ff4 SP |
164 | |
165 | /* | |
166 | * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is | |
167 | * ignored. | |
168 | */ | |
169 | #define ATP_THRESHOLD 5 | |
170 | ||
2a3e480d DT |
171 | /* Geyser initialization constants */ |
172 | #define ATP_GEYSER_MODE_READ_REQUEST_ID 1 | |
173 | #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9 | |
174 | #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300 | |
175 | #define ATP_GEYSER_MODE_REQUEST_INDEX 0 | |
176 | #define ATP_GEYSER_MODE_VENDOR_VALUE 0x04 | |
9effa978 | 177 | |
82a196f4 SA |
178 | /** |
179 | * enum atp_status_bits - status bit meanings | |
180 | * | |
181 | * These constants represent the meaning of the status bits. | |
182 | * (only Geyser 3/4) | |
183 | * | |
184 | * @ATP_STATUS_BUTTON: The button was pressed | |
185 | * @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad) | |
186 | * @ATP_STATUS_FROM_RESET: Reset previously performed | |
187 | */ | |
188 | enum atp_status_bits { | |
189 | ATP_STATUS_BUTTON = BIT(0), | |
190 | ATP_STATUS_BASE_UPDATE = BIT(2), | |
191 | ATP_STATUS_FROM_RESET = BIT(4), | |
192 | }; | |
193 | ||
f7214ff4 SP |
194 | /* Structure to hold all of our device specific stuff */ |
195 | struct atp { | |
c5b7c7c3 | 196 | char phys[64]; |
7dce869f JB |
197 | struct usb_device *udev; /* usb device */ |
198 | struct urb *urb; /* usb request block */ | |
82a196f4 | 199 | u8 *data; /* transferred data */ |
7dce869f | 200 | struct input_dev *input; /* input dev */ |
09779678 | 201 | const struct atp_info *info; /* touchpad model */ |
7dce869f JB |
202 | bool open; |
203 | bool valid; /* are the samples valid? */ | |
204 | bool size_detect_done; | |
205 | bool overflow_warned; | |
f7214ff4 SP |
206 | int x_old; /* last reported x/y, */ |
207 | int y_old; /* used for smoothing */ | |
04b4b88c VZ |
208 | u8 xy_cur[ATP_XSENSORS + ATP_YSENSORS]; |
209 | u8 xy_old[ATP_XSENSORS + ATP_YSENSORS]; | |
f7214ff4 | 210 | int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; |
7dce869f JB |
211 | int idlecount; /* number of empty packets */ |
212 | struct work_struct work; | |
f7214ff4 SP |
213 | }; |
214 | ||
215 | #define dbg_dump(msg, tab) \ | |
216 | if (debug > 1) { \ | |
7dce869f JB |
217 | int __i; \ |
218 | printk(KERN_DEBUG "appletouch: %s", msg); \ | |
219 | for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \ | |
220 | printk(" %02x", tab[__i]); \ | |
c5b7c7c3 | 221 | printk("\n"); \ |
f7214ff4 SP |
222 | } |
223 | ||
c5b7c7c3 | 224 | #define dprintk(format, a...) \ |
f7214ff4 | 225 | do { \ |
7dce869f JB |
226 | if (debug) \ |
227 | printk(KERN_DEBUG format, ##a); \ | |
f7214ff4 SP |
228 | } while (0) |
229 | ||
7dce869f JB |
230 | MODULE_AUTHOR("Johannes Berg"); |
231 | MODULE_AUTHOR("Stelian Pop"); | |
232 | MODULE_AUTHOR("Frank Arnold"); | |
233 | MODULE_AUTHOR("Michael Hanselmann"); | |
234 | MODULE_AUTHOR("Sven Anders"); | |
235 | MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver"); | |
f7214ff4 SP |
236 | MODULE_LICENSE("GPL"); |
237 | ||
00081d37 JP |
238 | /* |
239 | * Make the threshold a module parameter | |
240 | */ | |
241 | static int threshold = ATP_THRESHOLD; | |
242 | module_param(threshold, int, 0644); | |
7dce869f JB |
243 | MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor" |
244 | " (the trackpad has many of these sensors)" | |
245 | " less than this value."); | |
00081d37 | 246 | |
7dce869f | 247 | static int debug; |
f7214ff4 SP |
248 | module_param(debug, int, 0644); |
249 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
250 | ||
5a6eb676 | 251 | /* |
2a3e480d | 252 | * By default newer Geyser devices send standard USB HID mouse |
5a6eb676 SS |
253 | * packets (Report ID 2). This code changes device mode, so it |
254 | * sends raw sensor reports (Report ID 5). | |
255 | */ | |
2a3e480d | 256 | static int atp_geyser_init(struct usb_device *udev) |
5a6eb676 | 257 | { |
0385c5ee | 258 | char *data; |
5a6eb676 | 259 | int size; |
7dce869f | 260 | int i; |
0385c5ee BC |
261 | int ret; |
262 | ||
263 | data = kmalloc(8, GFP_KERNEL); | |
264 | if (!data) { | |
265 | err("Out of memory"); | |
266 | return -ENOMEM; | |
267 | } | |
5a6eb676 SS |
268 | |
269 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
2a3e480d | 270 | ATP_GEYSER_MODE_READ_REQUEST_ID, |
5a6eb676 | 271 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d | 272 | ATP_GEYSER_MODE_REQUEST_VALUE, |
0385c5ee | 273 | ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); |
5a6eb676 SS |
274 | |
275 | if (size != 8) { | |
7dce869f JB |
276 | dprintk("atp_geyser_init: read error\n"); |
277 | for (i = 0; i < 8; i++) | |
278 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
279 | ||
280 | err("Failed to read mode from device."); | |
0385c5ee BC |
281 | ret = -EIO; |
282 | goto out_free; | |
5a6eb676 SS |
283 | } |
284 | ||
285 | /* Apply the mode switch */ | |
2a3e480d | 286 | data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; |
5a6eb676 SS |
287 | |
288 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
2a3e480d | 289 | ATP_GEYSER_MODE_WRITE_REQUEST_ID, |
5a6eb676 | 290 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d | 291 | ATP_GEYSER_MODE_REQUEST_VALUE, |
0385c5ee | 292 | ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); |
5a6eb676 SS |
293 | |
294 | if (size != 8) { | |
7dce869f JB |
295 | dprintk("atp_geyser_init: write error\n"); |
296 | for (i = 0; i < 8; i++) | |
297 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
298 | ||
299 | err("Failed to request geyser raw mode"); | |
0385c5ee BC |
300 | ret = -EIO; |
301 | goto out_free; | |
5a6eb676 | 302 | } |
0385c5ee BC |
303 | ret = 0; |
304 | out_free: | |
305 | kfree(data); | |
306 | return ret; | |
5a6eb676 SS |
307 | } |
308 | ||
2a3e480d DT |
309 | /* |
310 | * Reinitialise the device. This usually stops stream of empty packets | |
311 | * coming from it. | |
312 | */ | |
5a6eb676 SS |
313 | static void atp_reinit(struct work_struct *work) |
314 | { | |
315 | struct atp *dev = container_of(work, struct atp, work); | |
316 | struct usb_device *udev = dev->udev; | |
2a3e480d | 317 | int retval; |
5a6eb676 | 318 | |
7dce869f | 319 | dprintk("appletouch: putting appletouch to sleep (reinit)\n"); |
2a3e480d DT |
320 | atp_geyser_init(udev); |
321 | ||
322 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
7dce869f JB |
323 | if (retval) |
324 | err("atp_reinit: usb_submit_urb failed with error %d", | |
325 | retval); | |
5a6eb676 SS |
326 | } |
327 | ||
f7214ff4 SP |
328 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, |
329 | int *z, int *fingers) | |
330 | { | |
331 | int i; | |
332 | /* values to calculate mean */ | |
333 | int pcum = 0, psum = 0; | |
00081d37 | 334 | int is_increasing = 0; |
f7214ff4 SP |
335 | |
336 | *fingers = 0; | |
337 | ||
338 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
339 | if (xy_sensors[i] < threshold) { |
340 | if (is_increasing) | |
341 | is_increasing = 0; | |
342 | ||
f7214ff4 | 343 | continue; |
00081d37 JP |
344 | } |
345 | ||
346 | /* | |
347 | * Makes the finger detection more versatile. For example, | |
348 | * two fingers with no gap will be detected. Also, my | |
349 | * tests show it less likely to have intermittent loss | |
350 | * of multiple finger readings while moving around (scrolling). | |
351 | * | |
352 | * Changes the multiple finger detection to counting humps on | |
353 | * sensors (transitions from nonincreasing to increasing) | |
354 | * instead of counting transitions from low sensors (no | |
355 | * finger reading) to high sensors (finger above | |
356 | * sensor) | |
357 | * | |
358 | * - Jason Parekh <jasonparekh@gmail.com> | |
359 | */ | |
7dce869f JB |
360 | if (i < 1 || |
361 | (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { | |
f7214ff4 | 362 | (*fingers)++; |
00081d37 | 363 | is_increasing = 1; |
05e882f8 | 364 | } else if (i > 0 && (xy_sensors[i - 1] - xy_sensors[i] > threshold)) { |
00081d37 JP |
365 | is_increasing = 0; |
366 | } | |
367 | ||
368 | /* | |
7dce869f JB |
369 | * Subtracts threshold so a high sensor that just passes the |
370 | * threshold won't skew the calculated absolute coordinate. | |
371 | * Fixes an issue where slowly moving the mouse would | |
372 | * occasionally jump a number of pixels (slowly moving the | |
373 | * finger makes this issue most apparent.) | |
00081d37 JP |
374 | */ |
375 | pcum += (xy_sensors[i] - threshold) * i; | |
376 | psum += (xy_sensors[i] - threshold); | |
f7214ff4 SP |
377 | } |
378 | ||
379 | if (psum > 0) { | |
380 | *z = psum; | |
381 | return pcum * fact / psum; | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | static inline void atp_report_fingers(struct input_dev *input, int fingers) | |
388 | { | |
389 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); | |
390 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); | |
391 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); | |
392 | } | |
393 | ||
d83d213d SA |
394 | /* Check URB status and for correct length of data package */ |
395 | ||
396 | #define ATP_URB_STATUS_SUCCESS 0 | |
397 | #define ATP_URB_STATUS_ERROR 1 | |
398 | #define ATP_URB_STATUS_ERROR_FATAL 2 | |
399 | ||
400 | static int atp_status_check(struct urb *urb) | |
f7214ff4 | 401 | { |
f7214ff4 SP |
402 | struct atp *dev = urb->context; |
403 | ||
404 | switch (urb->status) { | |
405 | case 0: | |
406 | /* success */ | |
407 | break; | |
e1e02c9f | 408 | case -EOVERFLOW: |
7dce869f | 409 | if (!dev->overflow_warned) { |
2a3e480d | 410 | printk(KERN_WARNING "appletouch: OVERFLOW with data " |
e1e02c9f | 411 | "length %d, actual length is %d\n", |
09779678 | 412 | dev->info->datalen, dev->urb->actual_length); |
7dce869f | 413 | dev->overflow_warned = true; |
e1e02c9f | 414 | } |
f7214ff4 SP |
415 | case -ECONNRESET: |
416 | case -ENOENT: | |
417 | case -ESHUTDOWN: | |
418 | /* This urb is terminated, clean up */ | |
7dce869f JB |
419 | dbg("atp_complete: urb shutting down with status: %d", |
420 | urb->status); | |
d83d213d SA |
421 | return ATP_URB_STATUS_ERROR_FATAL; |
422 | ||
f7214ff4 | 423 | default: |
7dce869f JB |
424 | dbg("atp_complete: nonzero urb status received: %d", |
425 | urb->status); | |
d83d213d | 426 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
427 | } |
428 | ||
429 | /* drop incomplete datasets */ | |
09779678 | 430 | if (dev->urb->actual_length != dev->info->datalen) { |
9effa978 NB |
431 | dprintk("appletouch: incomplete data package" |
432 | " (first byte: %d, length: %d).\n", | |
433 | dev->data[0], dev->urb->actual_length); | |
d83d213d | 434 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
435 | } |
436 | ||
d83d213d SA |
437 | return ATP_URB_STATUS_SUCCESS; |
438 | } | |
9effa978 | 439 | |
09779678 SP |
440 | static void atp_detect_size(struct atp *dev) |
441 | { | |
442 | int i; | |
443 | ||
444 | /* 17" Powerbooks have extra X sensors */ | |
445 | for (i = dev->info->xsensors; i < ATP_XSENSORS; i++) { | |
446 | if (dev->xy_cur[i]) { | |
447 | ||
448 | printk(KERN_INFO "appletouch: 17\" model detected.\n"); | |
449 | ||
450 | input_set_abs_params(dev->input, ABS_X, 0, | |
451 | (dev->info->xsensors_17 - 1) * | |
452 | dev->info->xfact - 1, | |
453 | ATP_FUZZ, 0); | |
454 | break; | |
455 | } | |
456 | } | |
457 | } | |
458 | ||
d83d213d SA |
459 | /* |
460 | * USB interrupt callback functions | |
461 | */ | |
9effa978 | 462 | |
d83d213d SA |
463 | /* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */ |
464 | ||
465 | static void atp_complete_geyser_1_2(struct urb *urb) | |
466 | { | |
467 | int x, y, x_z, y_z, x_f, y_f; | |
468 | int retval, i, j; | |
469 | int key; | |
470 | struct atp *dev = urb->context; | |
471 | int status = atp_status_check(urb); | |
472 | ||
473 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
474 | return; | |
475 | else if (status == ATP_URB_STATUS_ERROR) | |
476 | goto exit; | |
477 | ||
478 | /* reorder the sensors values */ | |
09779678 | 479 | if (dev->info == &geyser2_info) { |
e1e02c9f MH |
480 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
481 | ||
482 | /* | |
483 | * The values are laid out like this: | |
484 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | |
485 | * '-' is an unused value. | |
486 | */ | |
487 | ||
488 | /* read X values */ | |
489 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
490 | dev->xy_cur[i] = dev->data[j]; | |
491 | dev->xy_cur[i + 1] = dev->data[j + 1]; | |
492 | } | |
493 | ||
494 | /* read Y values */ | |
495 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
496 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | |
497 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | |
498 | } | |
499 | } else { | |
500 | for (i = 0; i < 8; i++) { | |
501 | /* X values */ | |
7dce869f | 502 | dev->xy_cur[i + 0] = dev->data[5 * i + 2]; |
e1e02c9f MH |
503 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; |
504 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | |
505 | if (i < 2) | |
506 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | |
507 | ||
508 | /* Y values */ | |
09779678 SP |
509 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[5 * i + 1]; |
510 | dev->xy_cur[ATP_XSENSORS + i + 8] = dev->data[5 * i + 3]; | |
e1e02c9f | 511 | } |
f7214ff4 SP |
512 | } |
513 | ||
514 | dbg_dump("sample", dev->xy_cur); | |
515 | ||
516 | if (!dev->valid) { | |
517 | /* first sample */ | |
7dce869f | 518 | dev->valid = true; |
f7214ff4 | 519 | dev->x_old = dev->y_old = -1; |
d83d213d SA |
520 | |
521 | /* Store first sample */ | |
f7214ff4 SP |
522 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); |
523 | ||
d83d213d | 524 | /* Perform size detection, if not done already */ |
09779678 SP |
525 | if (unlikely(!dev->size_detect_done)) { |
526 | atp_detect_size(dev); | |
d83d213d | 527 | dev->size_detect_done = 1; |
9effa978 | 528 | goto exit; |
d83d213d SA |
529 | } |
530 | } | |
9effa978 | 531 | |
d83d213d SA |
532 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { |
533 | /* accumulate the change */ | |
04b4b88c | 534 | int change = dev->xy_old[i] - dev->xy_cur[i]; |
d83d213d SA |
535 | dev->xy_acc[i] -= change; |
536 | ||
537 | /* prevent down drifting */ | |
538 | if (dev->xy_acc[i] < 0) | |
539 | dev->xy_acc[i] = 0; | |
540 | } | |
541 | ||
542 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
543 | ||
544 | dbg_dump("accumulator", dev->xy_acc); | |
545 | ||
546 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
09779678 | 547 | dev->info->xfact, &x_z, &x_f); |
d83d213d | 548 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, |
09779678 SP |
549 | dev->info->yfact, &y_z, &y_f); |
550 | key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; | |
d83d213d SA |
551 | |
552 | if (x && y) { | |
553 | if (dev->x_old != -1) { | |
554 | x = (dev->x_old * 3 + x) >> 2; | |
555 | y = (dev->y_old * 3 + y) >> 2; | |
556 | dev->x_old = x; | |
557 | dev->y_old = y; | |
558 | ||
559 | if (debug > 1) | |
560 | printk(KERN_DEBUG "appletouch: " | |
561 | "X: %3d Y: %3d Xz: %3d Yz: %3d\n", | |
562 | x, y, x_z, y_z); | |
563 | ||
564 | input_report_key(dev->input, BTN_TOUCH, 1); | |
565 | input_report_abs(dev->input, ABS_X, x); | |
566 | input_report_abs(dev->input, ABS_Y, y); | |
567 | input_report_abs(dev->input, ABS_PRESSURE, | |
568 | min(ATP_PRESSURE, x_z + y_z)); | |
569 | atp_report_fingers(dev->input, max(x_f, y_f)); | |
e1e02c9f | 570 | } |
d83d213d SA |
571 | dev->x_old = x; |
572 | dev->y_old = y; | |
573 | ||
574 | } else if (!x && !y) { | |
575 | ||
576 | dev->x_old = dev->y_old = -1; | |
577 | input_report_key(dev->input, BTN_TOUCH, 0); | |
578 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
579 | atp_report_fingers(dev->input, 0); | |
580 | ||
581 | /* reset the accumulator on release */ | |
582 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
583 | } | |
584 | ||
585 | input_report_key(dev->input, BTN_LEFT, key); | |
586 | input_sync(dev->input); | |
587 | ||
588 | exit: | |
589 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
590 | if (retval) | |
591 | err("atp_complete: usb_submit_urb failed with result %d", | |
592 | retval); | |
593 | } | |
594 | ||
595 | /* Interrupt function for older touchpads: GEYSER3/GEYSER4 */ | |
596 | ||
597 | static void atp_complete_geyser_3_4(struct urb *urb) | |
598 | { | |
599 | int x, y, x_z, y_z, x_f, y_f; | |
600 | int retval, i, j; | |
601 | int key; | |
602 | struct atp *dev = urb->context; | |
603 | int status = atp_status_check(urb); | |
604 | ||
605 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
606 | return; | |
607 | else if (status == ATP_URB_STATUS_ERROR) | |
608 | goto exit; | |
609 | ||
610 | /* Reorder the sensors values: | |
611 | * | |
612 | * The values are laid out like this: | |
613 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | |
614 | * '-' is an unused value. | |
615 | */ | |
616 | ||
617 | /* read X values */ | |
618 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
619 | dev->xy_cur[i] = dev->data[j + 1]; | |
620 | dev->xy_cur[i + 1] = dev->data[j + 2]; | |
621 | } | |
622 | /* read Y values */ | |
623 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
624 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | |
625 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | |
626 | } | |
627 | ||
628 | dbg_dump("sample", dev->xy_cur); | |
629 | ||
82a196f4 | 630 | /* Just update the base values (i.e. touchpad in untouched state) */ |
09779678 | 631 | if (dev->data[dev->info->datalen - 1] & ATP_STATUS_BASE_UPDATE) { |
f7214ff4 | 632 | |
82a196f4 SA |
633 | dprintk(KERN_DEBUG "appletouch: updated base values\n"); |
634 | ||
635 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
f7214ff4 SP |
636 | goto exit; |
637 | } | |
638 | ||
639 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | |
82a196f4 SA |
640 | /* calculate the change */ |
641 | dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i]; | |
642 | ||
643 | /* this is a round-robin value, so couple with that */ | |
644 | if (dev->xy_acc[i] > 127) | |
645 | dev->xy_acc[i] -= 256; | |
646 | ||
647 | if (dev->xy_acc[i] < -127) | |
648 | dev->xy_acc[i] += 256; | |
f7214ff4 SP |
649 | |
650 | /* prevent down drifting */ | |
651 | if (dev->xy_acc[i] < 0) | |
652 | dev->xy_acc[i] = 0; | |
653 | } | |
654 | ||
f7214ff4 SP |
655 | dbg_dump("accumulator", dev->xy_acc); |
656 | ||
657 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
09779678 | 658 | dev->info->xfact, &x_z, &x_f); |
f7214ff4 | 659 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, |
09779678 SP |
660 | dev->info->yfact, &y_z, &y_f); |
661 | key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; | |
f7214ff4 SP |
662 | |
663 | if (x && y) { | |
664 | if (dev->x_old != -1) { | |
665 | x = (dev->x_old * 3 + x) >> 2; | |
666 | y = (dev->y_old * 3 + y) >> 2; | |
667 | dev->x_old = x; | |
668 | dev->y_old = y; | |
669 | ||
670 | if (debug > 1) | |
2a3e480d | 671 | printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " |
f7214ff4 SP |
672 | "Xz: %3d Yz: %3d\n", |
673 | x, y, x_z, y_z); | |
674 | ||
c5b7c7c3 DT |
675 | input_report_key(dev->input, BTN_TOUCH, 1); |
676 | input_report_abs(dev->input, ABS_X, x); | |
677 | input_report_abs(dev->input, ABS_Y, y); | |
678 | input_report_abs(dev->input, ABS_PRESSURE, | |
f7214ff4 | 679 | min(ATP_PRESSURE, x_z + y_z)); |
c5b7c7c3 | 680 | atp_report_fingers(dev->input, max(x_f, y_f)); |
f7214ff4 SP |
681 | } |
682 | dev->x_old = x; | |
683 | dev->y_old = y; | |
5a6eb676 SS |
684 | |
685 | } else if (!x && !y) { | |
f7214ff4 SP |
686 | |
687 | dev->x_old = dev->y_old = -1; | |
c5b7c7c3 DT |
688 | input_report_key(dev->input, BTN_TOUCH, 0); |
689 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
690 | atp_report_fingers(dev->input, 0); | |
f7214ff4 SP |
691 | |
692 | /* reset the accumulator on release */ | |
693 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
937ad5c1 SS |
694 | } |
695 | ||
46249ea6 AE |
696 | input_report_key(dev->input, BTN_LEFT, key); |
697 | input_sync(dev->input); | |
698 | ||
2a3e480d | 699 | /* |
d83d213d | 700 | * Geysers 3/4 will continue to send packets continually after |
2a3e480d DT |
701 | * the first touch unless reinitialised. Do so if it's been |
702 | * idle for a while in order to avoid waking the kernel up | |
d83d213d | 703 | * several hundred times a second. |
2a3e480d | 704 | */ |
d83d213d SA |
705 | |
706 | /* | |
707 | * Button must not be pressed when entering suspend, | |
708 | * otherwise we will never release the button. | |
709 | */ | |
710 | if (!x && !y && !key) { | |
711 | dev->idlecount++; | |
712 | if (dev->idlecount == 10) { | |
82a196f4 SA |
713 | dev->x_old = dev->y_old = -1; |
714 | dev->idlecount = 0; | |
d83d213d SA |
715 | schedule_work(&dev->work); |
716 | /* Don't resubmit urb here, wait for reinit */ | |
717 | return; | |
718 | } | |
719 | } else | |
720 | dev->idlecount = 0; | |
f7214ff4 | 721 | |
7dce869f | 722 | exit: |
f7214ff4 | 723 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); |
7dce869f JB |
724 | if (retval) |
725 | err("atp_complete: usb_submit_urb failed with result %d", | |
726 | retval); | |
f7214ff4 SP |
727 | } |
728 | ||
729 | static int atp_open(struct input_dev *input) | |
730 | { | |
7791bdae | 731 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
732 | |
733 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
734 | return -EIO; | |
735 | ||
736 | dev->open = 1; | |
737 | return 0; | |
738 | } | |
739 | ||
740 | static void atp_close(struct input_dev *input) | |
741 | { | |
7791bdae | 742 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
743 | |
744 | usb_kill_urb(dev->urb); | |
5a6eb676 | 745 | cancel_work_sync(&dev->work); |
f7214ff4 SP |
746 | dev->open = 0; |
747 | } | |
748 | ||
90d95ef6 ON |
749 | static int atp_handle_geyser(struct atp *dev) |
750 | { | |
751 | struct usb_device *udev = dev->udev; | |
752 | ||
09779678 | 753 | if (dev->info != &fountain_info) { |
90d95ef6 ON |
754 | /* switch to raw sensor mode */ |
755 | if (atp_geyser_init(udev)) | |
756 | return -EIO; | |
757 | ||
758 | printk(KERN_INFO "appletouch: Geyser mode initialized.\n"); | |
759 | } | |
760 | ||
761 | return 0; | |
762 | } | |
763 | ||
7dce869f JB |
764 | static int atp_probe(struct usb_interface *iface, |
765 | const struct usb_device_id *id) | |
f7214ff4 | 766 | { |
c5b7c7c3 DT |
767 | struct atp *dev; |
768 | struct input_dev *input_dev; | |
769 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
770 | struct usb_host_interface *iface_desc; |
771 | struct usb_endpoint_descriptor *endpoint; | |
772 | int int_in_endpointAddr = 0; | |
5014186d | 773 | int i, error = -ENOMEM; |
09779678 | 774 | const struct atp_info *info = (const struct atp_info *)id->driver_info; |
f7214ff4 SP |
775 | |
776 | /* set up the endpoint information */ | |
777 | /* use only the first interrupt-in endpoint */ | |
778 | iface_desc = iface->cur_altsetting; | |
779 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
780 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 781 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
782 | /* we found an interrupt in endpoint */ |
783 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
784 | break; | |
785 | } | |
786 | } | |
787 | if (!int_in_endpointAddr) { | |
f7214ff4 | 788 | err("Could not find int-in endpoint"); |
c5b7c7c3 | 789 | return -EIO; |
f7214ff4 SP |
790 | } |
791 | ||
c5b7c7c3 DT |
792 | /* allocate memory for our device state and initialize it */ |
793 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
794 | input_dev = input_allocate_device(); | |
795 | if (!dev || !input_dev) { | |
796 | err("Out of memory"); | |
797 | goto err_free_devs; | |
798 | } | |
799 | ||
800 | dev->udev = udev; | |
801 | dev->input = input_dev; | |
09779678 | 802 | dev->info = info; |
7dce869f | 803 | dev->overflow_warned = false; |
9effa978 | 804 | |
f7214ff4 | 805 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); |
5014186d | 806 | if (!dev->urb) |
c5b7c7c3 | 807 | goto err_free_devs; |
c5b7c7c3 | 808 | |
09779678 | 809 | dev->data = usb_buffer_alloc(dev->udev, dev->info->datalen, GFP_KERNEL, |
f7214ff4 | 810 | &dev->urb->transfer_dma); |
5014186d | 811 | if (!dev->data) |
c5b7c7c3 | 812 | goto err_free_urb; |
c5b7c7c3 | 813 | |
09779678 SP |
814 | usb_fill_int_urb(dev->urb, udev, |
815 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
816 | dev->data, dev->info->datalen, | |
817 | dev->info->callback, dev, 1); | |
f7214ff4 | 818 | |
90d95ef6 ON |
819 | error = atp_handle_geyser(dev); |
820 | if (error) | |
821 | goto err_free_buffer; | |
822 | ||
c5b7c7c3 DT |
823 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
824 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
825 | ||
826 | input_dev->name = "appletouch"; | |
827 | input_dev->phys = dev->phys; | |
828 | usb_to_input_id(dev->udev, &input_dev->id); | |
c0f82d57 | 829 | input_dev->dev.parent = &iface->dev; |
f7214ff4 | 830 | |
7791bdae DT |
831 | input_set_drvdata(input_dev, dev); |
832 | ||
c5b7c7c3 DT |
833 | input_dev->open = atp_open; |
834 | input_dev->close = atp_close; | |
f7214ff4 | 835 | |
c5b7c7c3 | 836 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 837 | |
09779678 SP |
838 | input_set_abs_params(input_dev, ABS_X, 0, |
839 | (dev->info->xsensors - 1) * dev->info->xfact - 1, | |
840 | ATP_FUZZ, 0); | |
841 | input_set_abs_params(input_dev, ABS_Y, 0, | |
842 | (dev->info->ysensors - 1) * dev->info->yfact - 1, | |
843 | ATP_FUZZ, 0); | |
c5b7c7c3 | 844 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 845 | |
c5b7c7c3 DT |
846 | set_bit(EV_KEY, input_dev->evbit); |
847 | set_bit(BTN_TOUCH, input_dev->keybit); | |
848 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
849 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
850 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
851 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 852 | |
5014186d DT |
853 | error = input_register_device(dev->input); |
854 | if (error) | |
855 | goto err_free_buffer; | |
f7214ff4 | 856 | |
c5b7c7c3 DT |
857 | /* save our data pointer in this interface device */ |
858 | usb_set_intfdata(iface, dev); | |
f7214ff4 | 859 | |
5a6eb676 SS |
860 | INIT_WORK(&dev->work, atp_reinit); |
861 | ||
f7214ff4 SP |
862 | return 0; |
863 | ||
5014186d | 864 | err_free_buffer: |
09779678 | 865 | usb_buffer_free(dev->udev, dev->info->datalen, |
5014186d | 866 | dev->data, dev->urb->transfer_dma); |
c5b7c7c3 | 867 | err_free_urb: |
f7214ff4 | 868 | usb_free_urb(dev->urb); |
c5b7c7c3 | 869 | err_free_devs: |
f7214ff4 | 870 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 871 | kfree(dev); |
c5b7c7c3 | 872 | input_free_device(input_dev); |
5014186d | 873 | return error; |
f7214ff4 SP |
874 | } |
875 | ||
876 | static void atp_disconnect(struct usb_interface *iface) | |
877 | { | |
878 | struct atp *dev = usb_get_intfdata(iface); | |
879 | ||
880 | usb_set_intfdata(iface, NULL); | |
881 | if (dev) { | |
882 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 883 | input_unregister_device(dev->input); |
09779678 | 884 | usb_buffer_free(dev->udev, dev->info->datalen, |
f7214ff4 | 885 | dev->data, dev->urb->transfer_dma); |
7af569ab | 886 | usb_free_urb(dev->urb); |
f7214ff4 SP |
887 | kfree(dev); |
888 | } | |
889 | printk(KERN_INFO "input: appletouch disconnected\n"); | |
890 | } | |
891 | ||
90d95ef6 ON |
892 | static int atp_recover(struct atp *dev) |
893 | { | |
894 | int error; | |
895 | ||
896 | error = atp_handle_geyser(dev); | |
897 | if (error) | |
898 | return error; | |
899 | ||
900 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
901 | return -EIO; | |
902 | ||
903 | return 0; | |
904 | } | |
905 | ||
f7214ff4 SP |
906 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) |
907 | { | |
908 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 909 | |
f7214ff4 | 910 | usb_kill_urb(dev->urb); |
f7214ff4 SP |
911 | return 0; |
912 | } | |
913 | ||
914 | static int atp_resume(struct usb_interface *iface) | |
915 | { | |
916 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 917 | |
f7214ff4 SP |
918 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
919 | return -EIO; | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
90d95ef6 ON |
924 | static int atp_reset_resume(struct usb_interface *iface) |
925 | { | |
926 | struct atp *dev = usb_get_intfdata(iface); | |
927 | ||
928 | return atp_recover(dev); | |
929 | } | |
930 | ||
f7214ff4 | 931 | static struct usb_driver atp_driver = { |
f7214ff4 SP |
932 | .name = "appletouch", |
933 | .probe = atp_probe, | |
934 | .disconnect = atp_disconnect, | |
935 | .suspend = atp_suspend, | |
936 | .resume = atp_resume, | |
90d95ef6 | 937 | .reset_resume = atp_reset_resume, |
f7214ff4 SP |
938 | .id_table = atp_table, |
939 | }; | |
940 | ||
941 | static int __init atp_init(void) | |
942 | { | |
943 | return usb_register(&atp_driver); | |
944 | } | |
945 | ||
946 | static void __exit atp_exit(void) | |
947 | { | |
948 | usb_deregister(&atp_driver); | |
949 | } | |
950 | ||
951 | module_init(atp_init); | |
952 | module_exit(atp_exit); |