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) |
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 | |
82a196f4 SA |
139 | /** |
140 | * enum atp_status_bits - status bit meanings | |
141 | * | |
142 | * These constants represent the meaning of the status bits. | |
143 | * (only Geyser 3/4) | |
144 | * | |
145 | * @ATP_STATUS_BUTTON: The button was pressed | |
146 | * @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad) | |
147 | * @ATP_STATUS_FROM_RESET: Reset previously performed | |
148 | */ | |
149 | enum atp_status_bits { | |
150 | ATP_STATUS_BUTTON = BIT(0), | |
151 | ATP_STATUS_BASE_UPDATE = BIT(2), | |
152 | ATP_STATUS_FROM_RESET = BIT(4), | |
153 | }; | |
154 | ||
f7214ff4 SP |
155 | /* Structure to hold all of our device specific stuff */ |
156 | struct atp { | |
c5b7c7c3 | 157 | char phys[64]; |
7dce869f JB |
158 | struct usb_device *udev; /* usb device */ |
159 | struct urb *urb; /* usb request block */ | |
82a196f4 | 160 | u8 *data; /* transferred data */ |
7dce869f | 161 | struct input_dev *input; /* input dev */ |
e9542dff | 162 | enum atp_touchpad_type type; /* type of touchpad */ |
7dce869f JB |
163 | bool open; |
164 | bool valid; /* are the samples valid? */ | |
165 | bool size_detect_done; | |
166 | bool overflow_warned; | |
f7214ff4 SP |
167 | int x_old; /* last reported x/y, */ |
168 | int y_old; /* used for smoothing */ | |
f7214ff4 | 169 | signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; |
f7214ff4 | 170 | signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; |
f7214ff4 | 171 | int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; |
7dce869f JB |
172 | int datalen; /* size of USB transfer */ |
173 | int idlecount; /* number of empty packets */ | |
174 | struct work_struct work; | |
f7214ff4 SP |
175 | }; |
176 | ||
177 | #define dbg_dump(msg, tab) \ | |
178 | if (debug > 1) { \ | |
7dce869f JB |
179 | int __i; \ |
180 | printk(KERN_DEBUG "appletouch: %s", msg); \ | |
181 | for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \ | |
182 | printk(" %02x", tab[__i]); \ | |
c5b7c7c3 | 183 | printk("\n"); \ |
f7214ff4 SP |
184 | } |
185 | ||
c5b7c7c3 | 186 | #define dprintk(format, a...) \ |
f7214ff4 | 187 | do { \ |
7dce869f JB |
188 | if (debug) \ |
189 | printk(KERN_DEBUG format, ##a); \ | |
f7214ff4 SP |
190 | } while (0) |
191 | ||
7dce869f JB |
192 | MODULE_AUTHOR("Johannes Berg"); |
193 | MODULE_AUTHOR("Stelian Pop"); | |
194 | MODULE_AUTHOR("Frank Arnold"); | |
195 | MODULE_AUTHOR("Michael Hanselmann"); | |
196 | MODULE_AUTHOR("Sven Anders"); | |
197 | MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver"); | |
f7214ff4 SP |
198 | MODULE_LICENSE("GPL"); |
199 | ||
00081d37 JP |
200 | /* |
201 | * Make the threshold a module parameter | |
202 | */ | |
203 | static int threshold = ATP_THRESHOLD; | |
204 | module_param(threshold, int, 0644); | |
7dce869f JB |
205 | MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor" |
206 | " (the trackpad has many of these sensors)" | |
207 | " less than this value."); | |
00081d37 | 208 | |
7dce869f | 209 | static int debug; |
f7214ff4 SP |
210 | module_param(debug, int, 0644); |
211 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
212 | ||
5a6eb676 | 213 | /* |
2a3e480d | 214 | * By default newer Geyser devices send standard USB HID mouse |
5a6eb676 SS |
215 | * packets (Report ID 2). This code changes device mode, so it |
216 | * sends raw sensor reports (Report ID 5). | |
217 | */ | |
2a3e480d | 218 | static int atp_geyser_init(struct usb_device *udev) |
5a6eb676 SS |
219 | { |
220 | char data[8]; | |
221 | int size; | |
7dce869f | 222 | int i; |
5a6eb676 SS |
223 | |
224 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
2a3e480d | 225 | ATP_GEYSER_MODE_READ_REQUEST_ID, |
5a6eb676 | 226 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d DT |
227 | ATP_GEYSER_MODE_REQUEST_VALUE, |
228 | ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000); | |
5a6eb676 SS |
229 | |
230 | if (size != 8) { | |
7dce869f JB |
231 | dprintk("atp_geyser_init: read error\n"); |
232 | for (i = 0; i < 8; i++) | |
233 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
234 | ||
235 | err("Failed to read mode from device."); | |
5a6eb676 SS |
236 | return -EIO; |
237 | } | |
238 | ||
239 | /* Apply the mode switch */ | |
2a3e480d | 240 | data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; |
5a6eb676 SS |
241 | |
242 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
2a3e480d | 243 | ATP_GEYSER_MODE_WRITE_REQUEST_ID, |
5a6eb676 | 244 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d DT |
245 | ATP_GEYSER_MODE_REQUEST_VALUE, |
246 | ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000); | |
5a6eb676 SS |
247 | |
248 | if (size != 8) { | |
7dce869f JB |
249 | dprintk("atp_geyser_init: write error\n"); |
250 | for (i = 0; i < 8; i++) | |
251 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
252 | ||
253 | err("Failed to request geyser raw mode"); | |
5a6eb676 SS |
254 | return -EIO; |
255 | } | |
256 | return 0; | |
257 | } | |
258 | ||
2a3e480d DT |
259 | /* |
260 | * Reinitialise the device. This usually stops stream of empty packets | |
261 | * coming from it. | |
262 | */ | |
5a6eb676 SS |
263 | static void atp_reinit(struct work_struct *work) |
264 | { | |
265 | struct atp *dev = container_of(work, struct atp, work); | |
266 | struct usb_device *udev = dev->udev; | |
2a3e480d | 267 | int retval; |
5a6eb676 | 268 | |
7dce869f | 269 | dprintk("appletouch: putting appletouch to sleep (reinit)\n"); |
2a3e480d DT |
270 | atp_geyser_init(udev); |
271 | ||
272 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
7dce869f JB |
273 | if (retval) |
274 | err("atp_reinit: usb_submit_urb failed with error %d", | |
275 | retval); | |
5a6eb676 SS |
276 | } |
277 | ||
f7214ff4 SP |
278 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, |
279 | int *z, int *fingers) | |
280 | { | |
281 | int i; | |
282 | /* values to calculate mean */ | |
283 | int pcum = 0, psum = 0; | |
00081d37 | 284 | int is_increasing = 0; |
f7214ff4 SP |
285 | |
286 | *fingers = 0; | |
287 | ||
288 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
289 | if (xy_sensors[i] < threshold) { |
290 | if (is_increasing) | |
291 | is_increasing = 0; | |
292 | ||
f7214ff4 | 293 | continue; |
00081d37 JP |
294 | } |
295 | ||
296 | /* | |
297 | * Makes the finger detection more versatile. For example, | |
298 | * two fingers with no gap will be detected. Also, my | |
299 | * tests show it less likely to have intermittent loss | |
300 | * of multiple finger readings while moving around (scrolling). | |
301 | * | |
302 | * Changes the multiple finger detection to counting humps on | |
303 | * sensors (transitions from nonincreasing to increasing) | |
304 | * instead of counting transitions from low sensors (no | |
305 | * finger reading) to high sensors (finger above | |
306 | * sensor) | |
307 | * | |
308 | * - Jason Parekh <jasonparekh@gmail.com> | |
309 | */ | |
7dce869f JB |
310 | if (i < 1 || |
311 | (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { | |
f7214ff4 | 312 | (*fingers)++; |
00081d37 JP |
313 | is_increasing = 1; |
314 | } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) { | |
315 | is_increasing = 0; | |
316 | } | |
317 | ||
318 | /* | |
7dce869f JB |
319 | * Subtracts threshold so a high sensor that just passes the |
320 | * threshold won't skew the calculated absolute coordinate. | |
321 | * Fixes an issue where slowly moving the mouse would | |
322 | * occasionally jump a number of pixels (slowly moving the | |
323 | * finger makes this issue most apparent.) | |
00081d37 JP |
324 | */ |
325 | pcum += (xy_sensors[i] - threshold) * i; | |
326 | psum += (xy_sensors[i] - threshold); | |
f7214ff4 SP |
327 | } |
328 | ||
329 | if (psum > 0) { | |
330 | *z = psum; | |
331 | return pcum * fact / psum; | |
332 | } | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | static inline void atp_report_fingers(struct input_dev *input, int fingers) | |
338 | { | |
339 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); | |
340 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); | |
341 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); | |
342 | } | |
343 | ||
d83d213d SA |
344 | /* Check URB status and for correct length of data package */ |
345 | ||
346 | #define ATP_URB_STATUS_SUCCESS 0 | |
347 | #define ATP_URB_STATUS_ERROR 1 | |
348 | #define ATP_URB_STATUS_ERROR_FATAL 2 | |
349 | ||
350 | static int atp_status_check(struct urb *urb) | |
f7214ff4 | 351 | { |
f7214ff4 SP |
352 | struct atp *dev = urb->context; |
353 | ||
354 | switch (urb->status) { | |
355 | case 0: | |
356 | /* success */ | |
357 | break; | |
e1e02c9f | 358 | case -EOVERFLOW: |
7dce869f | 359 | if (!dev->overflow_warned) { |
2a3e480d | 360 | printk(KERN_WARNING "appletouch: OVERFLOW with data " |
e1e02c9f MH |
361 | "length %d, actual length is %d\n", |
362 | dev->datalen, dev->urb->actual_length); | |
7dce869f | 363 | dev->overflow_warned = true; |
e1e02c9f | 364 | } |
f7214ff4 SP |
365 | case -ECONNRESET: |
366 | case -ENOENT: | |
367 | case -ESHUTDOWN: | |
368 | /* This urb is terminated, clean up */ | |
7dce869f JB |
369 | dbg("atp_complete: urb shutting down with status: %d", |
370 | urb->status); | |
d83d213d SA |
371 | return ATP_URB_STATUS_ERROR_FATAL; |
372 | ||
f7214ff4 | 373 | default: |
7dce869f JB |
374 | dbg("atp_complete: nonzero urb status received: %d", |
375 | urb->status); | |
d83d213d | 376 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
377 | } |
378 | ||
379 | /* drop incomplete datasets */ | |
e1e02c9f | 380 | if (dev->urb->actual_length != dev->datalen) { |
9effa978 NB |
381 | dprintk("appletouch: incomplete data package" |
382 | " (first byte: %d, length: %d).\n", | |
383 | dev->data[0], dev->urb->actual_length); | |
d83d213d | 384 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
385 | } |
386 | ||
d83d213d SA |
387 | return ATP_URB_STATUS_SUCCESS; |
388 | } | |
9effa978 | 389 | |
d83d213d SA |
390 | /* |
391 | * USB interrupt callback functions | |
392 | */ | |
9effa978 | 393 | |
d83d213d SA |
394 | /* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */ |
395 | ||
396 | static void atp_complete_geyser_1_2(struct urb *urb) | |
397 | { | |
398 | int x, y, x_z, y_z, x_f, y_f; | |
399 | int retval, i, j; | |
400 | int key; | |
401 | struct atp *dev = urb->context; | |
402 | int status = atp_status_check(urb); | |
403 | ||
404 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
405 | return; | |
406 | else if (status == ATP_URB_STATUS_ERROR) | |
407 | goto exit; | |
408 | ||
409 | /* reorder the sensors values */ | |
410 | if (dev->type == ATP_GEYSER2) { | |
e1e02c9f MH |
411 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
412 | ||
413 | /* | |
414 | * The values are laid out like this: | |
415 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | |
416 | * '-' is an unused value. | |
417 | */ | |
418 | ||
419 | /* read X values */ | |
420 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
421 | dev->xy_cur[i] = dev->data[j]; | |
422 | dev->xy_cur[i + 1] = dev->data[j + 1]; | |
423 | } | |
424 | ||
425 | /* read Y values */ | |
426 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
427 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | |
428 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | |
429 | } | |
430 | } else { | |
431 | for (i = 0; i < 8; i++) { | |
432 | /* X values */ | |
7dce869f | 433 | dev->xy_cur[i + 0] = dev->data[5 * i + 2]; |
e1e02c9f MH |
434 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; |
435 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | |
436 | if (i < 2) | |
437 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | |
438 | ||
439 | /* Y values */ | |
440 | dev->xy_cur[i + 26] = dev->data[5 * i + 1]; | |
441 | dev->xy_cur[i + 34] = dev->data[5 * i + 3]; | |
442 | } | |
f7214ff4 SP |
443 | } |
444 | ||
445 | dbg_dump("sample", dev->xy_cur); | |
446 | ||
447 | if (!dev->valid) { | |
448 | /* first sample */ | |
7dce869f | 449 | dev->valid = true; |
f7214ff4 | 450 | dev->x_old = dev->y_old = -1; |
d83d213d SA |
451 | |
452 | /* Store first sample */ | |
f7214ff4 SP |
453 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); |
454 | ||
d83d213d SA |
455 | /* Perform size detection, if not done already */ |
456 | if (!dev->size_detect_done) { | |
457 | ||
458 | /* 17" Powerbooks have extra X sensors */ | |
459 | for (i = (dev->type == ATP_GEYSER2 ? 15 : 16); | |
460 | i < ATP_XSENSORS; i++) { | |
461 | if (!dev->xy_cur[i]) | |
462 | continue; | |
463 | ||
464 | printk(KERN_INFO | |
465 | "appletouch: 17\" model detected.\n"); | |
466 | ||
467 | if (dev->type == ATP_GEYSER2) | |
468 | input_set_abs_params(dev->input, ABS_X, | |
469 | 0, | |
470 | (20 - 1) * | |
471 | ATP_XFACT - 1, | |
472 | ATP_FUZZ, 0); | |
473 | else | |
474 | input_set_abs_params(dev->input, ABS_X, | |
475 | 0, | |
476 | (26 - 1) * | |
477 | ATP_XFACT - 1, | |
478 | ATP_FUZZ, 0); | |
479 | break; | |
480 | } | |
481 | ||
482 | dev->size_detect_done = 1; | |
9effa978 | 483 | goto exit; |
d83d213d SA |
484 | } |
485 | } | |
9effa978 | 486 | |
d83d213d SA |
487 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { |
488 | /* accumulate the change */ | |
489 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; | |
490 | dev->xy_acc[i] -= change; | |
491 | ||
492 | /* prevent down drifting */ | |
493 | if (dev->xy_acc[i] < 0) | |
494 | dev->xy_acc[i] = 0; | |
495 | } | |
496 | ||
497 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
498 | ||
499 | dbg_dump("accumulator", dev->xy_acc); | |
500 | ||
501 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
502 | ATP_XFACT, &x_z, &x_f); | |
503 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, | |
504 | ATP_YFACT, &y_z, &y_f); | |
82a196f4 | 505 | key = dev->data[dev->datalen - 1] & ATP_STATUS_BUTTON; |
d83d213d SA |
506 | |
507 | if (x && y) { | |
508 | if (dev->x_old != -1) { | |
509 | x = (dev->x_old * 3 + x) >> 2; | |
510 | y = (dev->y_old * 3 + y) >> 2; | |
511 | dev->x_old = x; | |
512 | dev->y_old = y; | |
513 | ||
514 | if (debug > 1) | |
515 | printk(KERN_DEBUG "appletouch: " | |
516 | "X: %3d Y: %3d Xz: %3d Yz: %3d\n", | |
517 | x, y, x_z, y_z); | |
518 | ||
519 | input_report_key(dev->input, BTN_TOUCH, 1); | |
520 | input_report_abs(dev->input, ABS_X, x); | |
521 | input_report_abs(dev->input, ABS_Y, y); | |
522 | input_report_abs(dev->input, ABS_PRESSURE, | |
523 | min(ATP_PRESSURE, x_z + y_z)); | |
524 | atp_report_fingers(dev->input, max(x_f, y_f)); | |
e1e02c9f | 525 | } |
d83d213d SA |
526 | dev->x_old = x; |
527 | dev->y_old = y; | |
528 | ||
529 | } else if (!x && !y) { | |
530 | ||
531 | dev->x_old = dev->y_old = -1; | |
532 | input_report_key(dev->input, BTN_TOUCH, 0); | |
533 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
534 | atp_report_fingers(dev->input, 0); | |
535 | ||
536 | /* reset the accumulator on release */ | |
537 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
538 | } | |
539 | ||
540 | input_report_key(dev->input, BTN_LEFT, key); | |
541 | input_sync(dev->input); | |
542 | ||
543 | exit: | |
544 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
545 | if (retval) | |
546 | err("atp_complete: usb_submit_urb failed with result %d", | |
547 | retval); | |
548 | } | |
549 | ||
550 | /* Interrupt function for older touchpads: GEYSER3/GEYSER4 */ | |
551 | ||
552 | static void atp_complete_geyser_3_4(struct urb *urb) | |
553 | { | |
554 | int x, y, x_z, y_z, x_f, y_f; | |
555 | int retval, i, j; | |
556 | int key; | |
557 | struct atp *dev = urb->context; | |
558 | int status = atp_status_check(urb); | |
559 | ||
560 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
561 | return; | |
562 | else if (status == ATP_URB_STATUS_ERROR) | |
563 | goto exit; | |
564 | ||
565 | /* Reorder the sensors values: | |
566 | * | |
567 | * The values are laid out like this: | |
568 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | |
569 | * '-' is an unused value. | |
570 | */ | |
571 | ||
572 | /* read X values */ | |
573 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
574 | dev->xy_cur[i] = dev->data[j + 1]; | |
575 | dev->xy_cur[i + 1] = dev->data[j + 2]; | |
576 | } | |
577 | /* read Y values */ | |
578 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
579 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | |
580 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | |
581 | } | |
582 | ||
583 | dbg_dump("sample", dev->xy_cur); | |
584 | ||
82a196f4 SA |
585 | /* Just update the base values (i.e. touchpad in untouched state) */ |
586 | if (dev->data[dev->datalen - 1] & ATP_STATUS_BASE_UPDATE) { | |
f7214ff4 | 587 | |
82a196f4 SA |
588 | dprintk(KERN_DEBUG "appletouch: updated base values\n"); |
589 | ||
590 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
f7214ff4 SP |
591 | goto exit; |
592 | } | |
593 | ||
594 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | |
82a196f4 SA |
595 | /* calculate the change */ |
596 | dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i]; | |
597 | ||
598 | /* this is a round-robin value, so couple with that */ | |
599 | if (dev->xy_acc[i] > 127) | |
600 | dev->xy_acc[i] -= 256; | |
601 | ||
602 | if (dev->xy_acc[i] < -127) | |
603 | dev->xy_acc[i] += 256; | |
f7214ff4 SP |
604 | |
605 | /* prevent down drifting */ | |
606 | if (dev->xy_acc[i] < 0) | |
607 | dev->xy_acc[i] = 0; | |
608 | } | |
609 | ||
f7214ff4 SP |
610 | dbg_dump("accumulator", dev->xy_acc); |
611 | ||
612 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
613 | ATP_XFACT, &x_z, &x_f); | |
614 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, | |
615 | ATP_YFACT, &y_z, &y_f); | |
82a196f4 | 616 | key = dev->data[dev->datalen - 1] & ATP_STATUS_BUTTON; |
f7214ff4 SP |
617 | |
618 | if (x && y) { | |
619 | if (dev->x_old != -1) { | |
620 | x = (dev->x_old * 3 + x) >> 2; | |
621 | y = (dev->y_old * 3 + y) >> 2; | |
622 | dev->x_old = x; | |
623 | dev->y_old = y; | |
624 | ||
625 | if (debug > 1) | |
2a3e480d | 626 | printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " |
f7214ff4 SP |
627 | "Xz: %3d Yz: %3d\n", |
628 | x, y, x_z, y_z); | |
629 | ||
c5b7c7c3 DT |
630 | input_report_key(dev->input, BTN_TOUCH, 1); |
631 | input_report_abs(dev->input, ABS_X, x); | |
632 | input_report_abs(dev->input, ABS_Y, y); | |
633 | input_report_abs(dev->input, ABS_PRESSURE, | |
f7214ff4 | 634 | min(ATP_PRESSURE, x_z + y_z)); |
c5b7c7c3 | 635 | atp_report_fingers(dev->input, max(x_f, y_f)); |
f7214ff4 SP |
636 | } |
637 | dev->x_old = x; | |
638 | dev->y_old = y; | |
5a6eb676 SS |
639 | |
640 | } else if (!x && !y) { | |
f7214ff4 SP |
641 | |
642 | dev->x_old = dev->y_old = -1; | |
c5b7c7c3 DT |
643 | input_report_key(dev->input, BTN_TOUCH, 0); |
644 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
645 | atp_report_fingers(dev->input, 0); | |
f7214ff4 SP |
646 | |
647 | /* reset the accumulator on release */ | |
648 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
937ad5c1 SS |
649 | } |
650 | ||
46249ea6 AE |
651 | input_report_key(dev->input, BTN_LEFT, key); |
652 | input_sync(dev->input); | |
653 | ||
2a3e480d | 654 | /* |
d83d213d | 655 | * Geysers 3/4 will continue to send packets continually after |
2a3e480d DT |
656 | * the first touch unless reinitialised. Do so if it's been |
657 | * idle for a while in order to avoid waking the kernel up | |
d83d213d | 658 | * several hundred times a second. |
2a3e480d | 659 | */ |
d83d213d SA |
660 | |
661 | /* | |
662 | * Button must not be pressed when entering suspend, | |
663 | * otherwise we will never release the button. | |
664 | */ | |
665 | if (!x && !y && !key) { | |
666 | dev->idlecount++; | |
667 | if (dev->idlecount == 10) { | |
82a196f4 SA |
668 | dev->x_old = dev->y_old = -1; |
669 | dev->idlecount = 0; | |
d83d213d SA |
670 | schedule_work(&dev->work); |
671 | /* Don't resubmit urb here, wait for reinit */ | |
672 | return; | |
673 | } | |
674 | } else | |
675 | dev->idlecount = 0; | |
f7214ff4 | 676 | |
7dce869f | 677 | exit: |
f7214ff4 | 678 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); |
7dce869f JB |
679 | if (retval) |
680 | err("atp_complete: usb_submit_urb failed with result %d", | |
681 | retval); | |
f7214ff4 SP |
682 | } |
683 | ||
684 | static int atp_open(struct input_dev *input) | |
685 | { | |
7791bdae | 686 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
687 | |
688 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
689 | return -EIO; | |
690 | ||
691 | dev->open = 1; | |
692 | return 0; | |
693 | } | |
694 | ||
695 | static void atp_close(struct input_dev *input) | |
696 | { | |
7791bdae | 697 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
698 | |
699 | usb_kill_urb(dev->urb); | |
5a6eb676 | 700 | cancel_work_sync(&dev->work); |
f7214ff4 SP |
701 | dev->open = 0; |
702 | } | |
703 | ||
90d95ef6 ON |
704 | static int atp_handle_geyser(struct atp *dev) |
705 | { | |
706 | struct usb_device *udev = dev->udev; | |
707 | ||
15439dd3 | 708 | if (dev->type != ATP_FOUNTAIN) { |
90d95ef6 ON |
709 | /* switch to raw sensor mode */ |
710 | if (atp_geyser_init(udev)) | |
711 | return -EIO; | |
712 | ||
713 | printk(KERN_INFO "appletouch: Geyser mode initialized.\n"); | |
714 | } | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
7dce869f JB |
719 | static int atp_probe(struct usb_interface *iface, |
720 | const struct usb_device_id *id) | |
f7214ff4 | 721 | { |
c5b7c7c3 DT |
722 | struct atp *dev; |
723 | struct input_dev *input_dev; | |
724 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
725 | struct usb_host_interface *iface_desc; |
726 | struct usb_endpoint_descriptor *endpoint; | |
727 | int int_in_endpointAddr = 0; | |
5014186d | 728 | int i, error = -ENOMEM; |
f7214ff4 SP |
729 | |
730 | /* set up the endpoint information */ | |
731 | /* use only the first interrupt-in endpoint */ | |
732 | iface_desc = iface->cur_altsetting; | |
733 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
734 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 735 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
736 | /* we found an interrupt in endpoint */ |
737 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
738 | break; | |
739 | } | |
740 | } | |
741 | if (!int_in_endpointAddr) { | |
f7214ff4 | 742 | err("Could not find int-in endpoint"); |
c5b7c7c3 | 743 | return -EIO; |
f7214ff4 SP |
744 | } |
745 | ||
c5b7c7c3 DT |
746 | /* allocate memory for our device state and initialize it */ |
747 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
748 | input_dev = input_allocate_device(); | |
749 | if (!dev || !input_dev) { | |
750 | err("Out of memory"); | |
751 | goto err_free_devs; | |
752 | } | |
753 | ||
754 | dev->udev = udev; | |
755 | dev->input = input_dev; | |
e9542dff | 756 | dev->type = id->driver_info; |
7dce869f | 757 | dev->overflow_warned = false; |
e9542dff | 758 | if (dev->type == ATP_FOUNTAIN || dev->type == ATP_GEYSER1) |
9effa978 | 759 | dev->datalen = 81; |
e9542dff SA |
760 | else |
761 | dev->datalen = 64; | |
9effa978 | 762 | |
f7214ff4 | 763 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); |
5014186d | 764 | if (!dev->urb) |
c5b7c7c3 | 765 | goto err_free_devs; |
c5b7c7c3 | 766 | |
e1e02c9f | 767 | dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL, |
f7214ff4 | 768 | &dev->urb->transfer_dma); |
5014186d | 769 | if (!dev->data) |
c5b7c7c3 | 770 | goto err_free_urb; |
c5b7c7c3 | 771 | |
d83d213d SA |
772 | /* Select the USB complete (callback) function */ |
773 | if (dev->type == ATP_FOUNTAIN || | |
774 | dev->type == ATP_GEYSER1 || | |
775 | dev->type == ATP_GEYSER2) | |
776 | usb_fill_int_urb(dev->urb, udev, | |
777 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
778 | dev->data, dev->datalen, | |
779 | atp_complete_geyser_1_2, dev, 1); | |
780 | else | |
781 | usb_fill_int_urb(dev->urb, udev, | |
782 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
783 | dev->data, dev->datalen, | |
784 | atp_complete_geyser_3_4, dev, 1); | |
f7214ff4 | 785 | |
90d95ef6 ON |
786 | error = atp_handle_geyser(dev); |
787 | if (error) | |
788 | goto err_free_buffer; | |
789 | ||
c5b7c7c3 DT |
790 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
791 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
792 | ||
793 | input_dev->name = "appletouch"; | |
794 | input_dev->phys = dev->phys; | |
795 | usb_to_input_id(dev->udev, &input_dev->id); | |
c0f82d57 | 796 | input_dev->dev.parent = &iface->dev; |
f7214ff4 | 797 | |
7791bdae DT |
798 | input_set_drvdata(input_dev, dev); |
799 | ||
c5b7c7c3 DT |
800 | input_dev->open = atp_open; |
801 | input_dev->close = atp_close; | |
f7214ff4 | 802 | |
c5b7c7c3 | 803 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 804 | |
e9542dff | 805 | if (dev->type == ATP_GEYSER3 || dev->type == ATP_GEYSER4) { |
9effa978 NB |
806 | /* |
807 | * MacBook have 20 X sensors, 10 Y sensors | |
808 | */ | |
809 | input_set_abs_params(input_dev, ABS_X, 0, | |
810 | ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
811 | input_set_abs_params(input_dev, ABS_Y, 0, | |
812 | ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
e9542dff | 813 | } else if (dev->type == ATP_GEYSER2) { |
e1e02c9f MH |
814 | /* |
815 | * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected | |
816 | * later. | |
817 | */ | |
818 | input_set_abs_params(input_dev, ABS_X, 0, | |
819 | ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0); | |
820 | input_set_abs_params(input_dev, ABS_Y, 0, | |
821 | ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0); | |
822 | } else { | |
823 | /* | |
824 | * 12" and 15" Powerbooks only have 16 x sensors, | |
825 | * 17" models are detected later. | |
826 | */ | |
827 | input_set_abs_params(input_dev, ABS_X, 0, | |
7dce869f JB |
828 | (16 - 1) * ATP_XFACT - 1, |
829 | ATP_FUZZ, 0); | |
e1e02c9f | 830 | input_set_abs_params(input_dev, ABS_Y, 0, |
7dce869f JB |
831 | (ATP_YSENSORS - 1) * ATP_YFACT - 1, |
832 | ATP_FUZZ, 0); | |
e1e02c9f | 833 | } |
c5b7c7c3 | 834 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 835 | |
c5b7c7c3 DT |
836 | set_bit(EV_KEY, input_dev->evbit); |
837 | set_bit(BTN_TOUCH, input_dev->keybit); | |
838 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
839 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
840 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
841 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 842 | |
5014186d DT |
843 | error = input_register_device(dev->input); |
844 | if (error) | |
845 | goto err_free_buffer; | |
f7214ff4 | 846 | |
c5b7c7c3 DT |
847 | /* save our data pointer in this interface device */ |
848 | usb_set_intfdata(iface, dev); | |
f7214ff4 | 849 | |
5a6eb676 SS |
850 | INIT_WORK(&dev->work, atp_reinit); |
851 | ||
f7214ff4 SP |
852 | return 0; |
853 | ||
5014186d DT |
854 | err_free_buffer: |
855 | usb_buffer_free(dev->udev, dev->datalen, | |
856 | dev->data, dev->urb->transfer_dma); | |
c5b7c7c3 | 857 | err_free_urb: |
f7214ff4 | 858 | usb_free_urb(dev->urb); |
c5b7c7c3 | 859 | err_free_devs: |
f7214ff4 | 860 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 861 | kfree(dev); |
c5b7c7c3 | 862 | input_free_device(input_dev); |
5014186d | 863 | return error; |
f7214ff4 SP |
864 | } |
865 | ||
866 | static void atp_disconnect(struct usb_interface *iface) | |
867 | { | |
868 | struct atp *dev = usb_get_intfdata(iface); | |
869 | ||
870 | usb_set_intfdata(iface, NULL); | |
871 | if (dev) { | |
872 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 873 | input_unregister_device(dev->input); |
e1e02c9f | 874 | usb_buffer_free(dev->udev, dev->datalen, |
f7214ff4 | 875 | dev->data, dev->urb->transfer_dma); |
7af569ab | 876 | usb_free_urb(dev->urb); |
f7214ff4 SP |
877 | kfree(dev); |
878 | } | |
879 | printk(KERN_INFO "input: appletouch disconnected\n"); | |
880 | } | |
881 | ||
90d95ef6 ON |
882 | static int atp_recover(struct atp *dev) |
883 | { | |
884 | int error; | |
885 | ||
886 | error = atp_handle_geyser(dev); | |
887 | if (error) | |
888 | return error; | |
889 | ||
890 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
891 | return -EIO; | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
f7214ff4 SP |
896 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) |
897 | { | |
898 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 899 | |
f7214ff4 | 900 | usb_kill_urb(dev->urb); |
f7214ff4 SP |
901 | return 0; |
902 | } | |
903 | ||
904 | static int atp_resume(struct usb_interface *iface) | |
905 | { | |
906 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 907 | |
f7214ff4 SP |
908 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
909 | return -EIO; | |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
90d95ef6 ON |
914 | static int atp_reset_resume(struct usb_interface *iface) |
915 | { | |
916 | struct atp *dev = usb_get_intfdata(iface); | |
917 | ||
918 | return atp_recover(dev); | |
919 | } | |
920 | ||
f7214ff4 | 921 | static struct usb_driver atp_driver = { |
f7214ff4 SP |
922 | .name = "appletouch", |
923 | .probe = atp_probe, | |
924 | .disconnect = atp_disconnect, | |
925 | .suspend = atp_suspend, | |
926 | .resume = atp_resume, | |
90d95ef6 | 927 | .reset_resume = atp_reset_resume, |
f7214ff4 SP |
928 | .id_table = atp_table, |
929 | }; | |
930 | ||
931 | static int __init atp_init(void) | |
932 | { | |
933 | return usb_register(&atp_driver); | |
934 | } | |
935 | ||
936 | static void __exit atp_exit(void) | |
937 | { | |
938 | usb_deregister(&atp_driver); | |
939 | } | |
940 | ||
941 | module_init(atp_init); | |
942 | module_exit(atp_exit); |