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> | |
f7214ff4 SP |
33 | #include <linux/slab.h> |
34 | #include <linux/module.h> | |
ae0dadcf | 35 | #include <linux/usb/input.h> |
f7214ff4 | 36 | |
09779678 SP |
37 | /* |
38 | * Note: We try to keep the touchpad aspect ratio while still doing only | |
39 | * simple arithmetics: | |
40 | * 0 <= x <= (xsensors - 1) * xfact | |
41 | * 0 <= y <= (ysensors - 1) * yfact | |
42 | */ | |
43 | struct atp_info { | |
44 | int xsensors; /* number of X sensors */ | |
45 | int xsensors_17; /* 17" models have more sensors */ | |
46 | int ysensors; /* number of Y sensors */ | |
47 | int xfact; /* X multiplication factor */ | |
48 | int yfact; /* Y multiplication factor */ | |
49 | int datalen; /* size of USB transfers */ | |
50 | void (*callback)(struct urb *); /* callback function */ | |
703e1488 | 51 | int fuzz; /* fuzz touchpad generates */ |
09779678 SP |
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, | |
703e1488 | 65 | .fuzz = 16, |
09779678 SP |
66 | }; |
67 | ||
68 | static const struct atp_info geyser1_info = { | |
69 | .xsensors = 16, | |
70 | .xsensors_17 = 26, | |
71 | .ysensors = 16, | |
72 | .xfact = 64, | |
73 | .yfact = 43, | |
74 | .datalen = 81, | |
75 | .callback = atp_complete_geyser_1_2, | |
703e1488 | 76 | .fuzz = 16, |
09779678 SP |
77 | }; |
78 | ||
79 | static const struct atp_info geyser2_info = { | |
80 | .xsensors = 15, | |
81 | .xsensors_17 = 20, | |
82 | .ysensors = 9, | |
83 | .xfact = 64, | |
84 | .yfact = 43, | |
85 | .datalen = 64, | |
86 | .callback = atp_complete_geyser_1_2, | |
703e1488 | 87 | .fuzz = 0, |
09779678 SP |
88 | }; |
89 | ||
90 | static const struct atp_info geyser3_info = { | |
91 | .xsensors = 20, | |
92 | .ysensors = 10, | |
93 | .xfact = 64, | |
94 | .yfact = 64, | |
95 | .datalen = 64, | |
96 | .callback = atp_complete_geyser_3_4, | |
703e1488 | 97 | .fuzz = 0, |
e9542dff | 98 | }; |
0035a1dc | 99 | |
09779678 SP |
100 | static const struct atp_info geyser4_info = { |
101 | .xsensors = 20, | |
102 | .ysensors = 10, | |
103 | .xfact = 64, | |
104 | .yfact = 64, | |
105 | .datalen = 64, | |
106 | .callback = atp_complete_geyser_3_4, | |
703e1488 | 107 | .fuzz = 0, |
09779678 SP |
108 | }; |
109 | ||
110 | #define ATP_DEVICE(prod, info) \ | |
e9542dff | 111 | { \ |
c5b7c7c3 | 112 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ |
f7214ff4 SP |
113 | USB_DEVICE_ID_MATCH_INT_CLASS | \ |
114 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ | |
e9542dff | 115 | .idVendor = 0x05ac, /* Apple */ \ |
f7214ff4 SP |
116 | .idProduct = (prod), \ |
117 | .bInterfaceClass = 0x03, \ | |
e9542dff | 118 | .bInterfaceProtocol = 0x02, \ |
09779678 | 119 | .driver_info = (unsigned long) &info, \ |
e9542dff SA |
120 | } |
121 | ||
122 | /* | |
123 | * Table of devices (Product IDs) that work with this driver. | |
124 | * (The names come from Info.plist in AppleUSBTrackpad.kext, | |
125 | * According to Info.plist Geyser IV is the same as Geyser III.) | |
126 | */ | |
f7214ff4 | 127 | |
09779678 | 128 | static struct usb_device_id atp_table[] = { |
7dce869f | 129 | /* PowerBooks Feb 2005, iBooks G4 */ |
09779678 SP |
130 | ATP_DEVICE(0x020e, fountain_info), /* FOUNTAIN ANSI */ |
131 | ATP_DEVICE(0x020f, fountain_info), /* FOUNTAIN ISO */ | |
132 | ATP_DEVICE(0x030a, fountain_info), /* FOUNTAIN TP ONLY */ | |
133 | ATP_DEVICE(0x030b, geyser1_info), /* GEYSER 1 TP ONLY */ | |
e1e02c9f MH |
134 | |
135 | /* PowerBooks Oct 2005 */ | |
09779678 SP |
136 | ATP_DEVICE(0x0214, geyser2_info), /* GEYSER 2 ANSI */ |
137 | ATP_DEVICE(0x0215, geyser2_info), /* GEYSER 2 ISO */ | |
138 | ATP_DEVICE(0x0216, geyser2_info), /* GEYSER 2 JIS */ | |
e1e02c9f | 139 | |
009ad0e7 | 140 | /* Core Duo MacBook & MacBook Pro */ |
09779678 SP |
141 | ATP_DEVICE(0x0217, geyser3_info), /* GEYSER 3 ANSI */ |
142 | ATP_DEVICE(0x0218, geyser3_info), /* GEYSER 3 ISO */ | |
143 | ATP_DEVICE(0x0219, geyser3_info), /* GEYSER 3 JIS */ | |
9effa978 | 144 | |
009ad0e7 | 145 | /* Core2 Duo MacBook & MacBook Pro */ |
09779678 SP |
146 | ATP_DEVICE(0x021a, geyser4_info), /* GEYSER 4 ANSI */ |
147 | ATP_DEVICE(0x021b, geyser4_info), /* GEYSER 4 ISO */ | |
148 | ATP_DEVICE(0x021c, geyser4_info), /* GEYSER 4 JIS */ | |
009ad0e7 | 149 | |
7dce869f | 150 | /* Core2 Duo MacBook3,1 */ |
09779678 SP |
151 | ATP_DEVICE(0x0229, geyser4_info), /* GEYSER 4 HF ANSI */ |
152 | ATP_DEVICE(0x022a, geyser4_info), /* GEYSER 4 HF ISO */ | |
153 | ATP_DEVICE(0x022b, geyser4_info), /* GEYSER 4 HF JIS */ | |
0035a1dc | 154 | |
e1e02c9f MH |
155 | /* Terminating entry */ |
156 | { } | |
f7214ff4 | 157 | }; |
7dce869f | 158 | MODULE_DEVICE_TABLE(usb, atp_table); |
f7214ff4 | 159 | |
09779678 | 160 | /* maximum number of sensors */ |
f7214ff4 SP |
161 | #define ATP_XSENSORS 26 |
162 | #define ATP_YSENSORS 16 | |
163 | ||
739204bc CS |
164 | /* |
165 | * The largest possible bank of sensors with additional buffer of 4 extra values | |
166 | * on either side, for an array of smoothed sensor values. | |
167 | */ | |
168 | #define ATP_SMOOTHSIZE 34 | |
169 | ||
f7214ff4 SP |
170 | /* maximum pressure this driver will report */ |
171 | #define ATP_PRESSURE 300 | |
f7214ff4 SP |
172 | |
173 | /* | |
174 | * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is | |
175 | * ignored. | |
176 | */ | |
739204bc CS |
177 | #define ATP_THRESHOLD 5 |
178 | ||
179 | /* | |
180 | * How far we'll bitshift our sensor values before averaging them. Mitigates | |
181 | * rounding errors. | |
182 | */ | |
183 | #define ATP_SCALE 12 | |
f7214ff4 | 184 | |
2a3e480d DT |
185 | /* Geyser initialization constants */ |
186 | #define ATP_GEYSER_MODE_READ_REQUEST_ID 1 | |
187 | #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9 | |
188 | #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300 | |
189 | #define ATP_GEYSER_MODE_REQUEST_INDEX 0 | |
190 | #define ATP_GEYSER_MODE_VENDOR_VALUE 0x04 | |
9effa978 | 191 | |
82a196f4 SA |
192 | /** |
193 | * enum atp_status_bits - status bit meanings | |
194 | * | |
195 | * These constants represent the meaning of the status bits. | |
196 | * (only Geyser 3/4) | |
197 | * | |
198 | * @ATP_STATUS_BUTTON: The button was pressed | |
199 | * @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad) | |
200 | * @ATP_STATUS_FROM_RESET: Reset previously performed | |
201 | */ | |
202 | enum atp_status_bits { | |
203 | ATP_STATUS_BUTTON = BIT(0), | |
204 | ATP_STATUS_BASE_UPDATE = BIT(2), | |
205 | ATP_STATUS_FROM_RESET = BIT(4), | |
206 | }; | |
207 | ||
f7214ff4 SP |
208 | /* Structure to hold all of our device specific stuff */ |
209 | struct atp { | |
c5b7c7c3 | 210 | char phys[64]; |
7dce869f | 211 | struct usb_device *udev; /* usb device */ |
2d744b09 | 212 | struct usb_interface *intf; /* usb interface */ |
7dce869f | 213 | struct urb *urb; /* usb request block */ |
82a196f4 | 214 | u8 *data; /* transferred data */ |
7dce869f | 215 | struct input_dev *input; /* input dev */ |
09779678 | 216 | const struct atp_info *info; /* touchpad model */ |
7dce869f JB |
217 | bool open; |
218 | bool valid; /* are the samples valid? */ | |
219 | bool size_detect_done; | |
220 | bool overflow_warned; | |
7bbdba56 | 221 | int fingers_old; /* last reported finger count */ |
f7214ff4 SP |
222 | int x_old; /* last reported x/y, */ |
223 | int y_old; /* used for smoothing */ | |
6e49c1a4 BH |
224 | signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; |
225 | signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; | |
f7214ff4 | 226 | int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; |
739204bc CS |
227 | int smooth[ATP_SMOOTHSIZE]; |
228 | int smooth_tmp[ATP_SMOOTHSIZE]; | |
7dce869f JB |
229 | int idlecount; /* number of empty packets */ |
230 | struct work_struct work; | |
f7214ff4 SP |
231 | }; |
232 | ||
233 | #define dbg_dump(msg, tab) \ | |
234 | if (debug > 1) { \ | |
7dce869f JB |
235 | int __i; \ |
236 | printk(KERN_DEBUG "appletouch: %s", msg); \ | |
237 | for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \ | |
238 | printk(" %02x", tab[__i]); \ | |
c5b7c7c3 | 239 | printk("\n"); \ |
f7214ff4 SP |
240 | } |
241 | ||
c5b7c7c3 | 242 | #define dprintk(format, a...) \ |
f7214ff4 | 243 | do { \ |
7dce869f JB |
244 | if (debug) \ |
245 | printk(KERN_DEBUG format, ##a); \ | |
f7214ff4 SP |
246 | } while (0) |
247 | ||
7dce869f JB |
248 | MODULE_AUTHOR("Johannes Berg"); |
249 | MODULE_AUTHOR("Stelian Pop"); | |
250 | MODULE_AUTHOR("Frank Arnold"); | |
251 | MODULE_AUTHOR("Michael Hanselmann"); | |
252 | MODULE_AUTHOR("Sven Anders"); | |
253 | MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver"); | |
f7214ff4 SP |
254 | MODULE_LICENSE("GPL"); |
255 | ||
00081d37 JP |
256 | /* |
257 | * Make the threshold a module parameter | |
258 | */ | |
259 | static int threshold = ATP_THRESHOLD; | |
260 | module_param(threshold, int, 0644); | |
7dce869f JB |
261 | MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor" |
262 | " (the trackpad has many of these sensors)" | |
263 | " less than this value."); | |
00081d37 | 264 | |
7dce869f | 265 | static int debug; |
f7214ff4 SP |
266 | module_param(debug, int, 0644); |
267 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
268 | ||
5a6eb676 | 269 | /* |
2a3e480d | 270 | * By default newer Geyser devices send standard USB HID mouse |
5a6eb676 SS |
271 | * packets (Report ID 2). This code changes device mode, so it |
272 | * sends raw sensor reports (Report ID 5). | |
273 | */ | |
80f8594f | 274 | static int atp_geyser_init(struct atp *dev) |
5a6eb676 | 275 | { |
80f8594f | 276 | struct usb_device *udev = dev->udev; |
0385c5ee | 277 | char *data; |
5a6eb676 | 278 | int size; |
7dce869f | 279 | int i; |
0385c5ee BC |
280 | int ret; |
281 | ||
282 | data = kmalloc(8, GFP_KERNEL); | |
283 | if (!data) { | |
2d744b09 | 284 | dev_err(&dev->intf->dev, "Out of memory\n"); |
0385c5ee BC |
285 | return -ENOMEM; |
286 | } | |
5a6eb676 SS |
287 | |
288 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
2a3e480d | 289 | ATP_GEYSER_MODE_READ_REQUEST_ID, |
5a6eb676 | 290 | USB_DIR_IN | 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: read error\n"); |
296 | for (i = 0; i < 8; i++) | |
297 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
298 | ||
2d744b09 | 299 | dev_err(&dev->intf->dev, "Failed to read mode from device.\n"); |
0385c5ee BC |
300 | ret = -EIO; |
301 | goto out_free; | |
5a6eb676 SS |
302 | } |
303 | ||
304 | /* Apply the mode switch */ | |
2a3e480d | 305 | data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; |
5a6eb676 SS |
306 | |
307 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
2a3e480d | 308 | ATP_GEYSER_MODE_WRITE_REQUEST_ID, |
5a6eb676 | 309 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d | 310 | ATP_GEYSER_MODE_REQUEST_VALUE, |
0385c5ee | 311 | ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); |
5a6eb676 SS |
312 | |
313 | if (size != 8) { | |
7dce869f JB |
314 | dprintk("atp_geyser_init: write error\n"); |
315 | for (i = 0; i < 8; i++) | |
316 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
317 | ||
2d744b09 | 318 | dev_err(&dev->intf->dev, "Failed to request geyser raw mode\n"); |
0385c5ee BC |
319 | ret = -EIO; |
320 | goto out_free; | |
5a6eb676 | 321 | } |
0385c5ee BC |
322 | ret = 0; |
323 | out_free: | |
324 | kfree(data); | |
325 | return ret; | |
5a6eb676 SS |
326 | } |
327 | ||
2a3e480d DT |
328 | /* |
329 | * Reinitialise the device. This usually stops stream of empty packets | |
330 | * coming from it. | |
331 | */ | |
5a6eb676 SS |
332 | static void atp_reinit(struct work_struct *work) |
333 | { | |
334 | struct atp *dev = container_of(work, struct atp, work); | |
2a3e480d | 335 | int retval; |
5a6eb676 | 336 | |
7dce869f | 337 | dprintk("appletouch: putting appletouch to sleep (reinit)\n"); |
80f8594f | 338 | atp_geyser_init(dev); |
2a3e480d DT |
339 | |
340 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
7dce869f | 341 | if (retval) |
2d744b09 | 342 | dev_err(&dev->intf->dev, |
9c113dc6 GKH |
343 | "atp_reinit: usb_submit_urb failed with error %d\n", |
344 | retval); | |
5a6eb676 SS |
345 | } |
346 | ||
739204bc CS |
347 | static int atp_calculate_abs(struct atp *dev, int offset, int nb_sensors, |
348 | int fact, int *z, int *fingers) | |
f7214ff4 | 349 | { |
739204bc CS |
350 | int i, pass; |
351 | ||
352 | /* | |
353 | * Use offset to point xy_sensors at the first value in dev->xy_acc | |
354 | * for whichever dimension we're looking at this particular go-round. | |
355 | */ | |
356 | int *xy_sensors = dev->xy_acc + offset; | |
357 | ||
f7214ff4 SP |
358 | /* values to calculate mean */ |
359 | int pcum = 0, psum = 0; | |
00081d37 | 360 | int is_increasing = 0; |
f7214ff4 SP |
361 | |
362 | *fingers = 0; | |
363 | ||
364 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
365 | if (xy_sensors[i] < threshold) { |
366 | if (is_increasing) | |
367 | is_increasing = 0; | |
368 | ||
00081d37 JP |
369 | /* |
370 | * Makes the finger detection more versatile. For example, | |
371 | * two fingers with no gap will be detected. Also, my | |
372 | * tests show it less likely to have intermittent loss | |
373 | * of multiple finger readings while moving around (scrolling). | |
374 | * | |
375 | * Changes the multiple finger detection to counting humps on | |
376 | * sensors (transitions from nonincreasing to increasing) | |
377 | * instead of counting transitions from low sensors (no | |
378 | * finger reading) to high sensors (finger above | |
379 | * sensor) | |
380 | * | |
381 | * - Jason Parekh <jasonparekh@gmail.com> | |
382 | */ | |
739204bc CS |
383 | |
384 | } else if (i < 1 || | |
7dce869f | 385 | (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { |
f7214ff4 | 386 | (*fingers)++; |
00081d37 | 387 | is_increasing = 1; |
05e882f8 | 388 | } else if (i > 0 && (xy_sensors[i - 1] - xy_sensors[i] > threshold)) { |
00081d37 JP |
389 | is_increasing = 0; |
390 | } | |
739204bc CS |
391 | } |
392 | ||
393 | if (*fingers < 1) /* No need to continue if no fingers are found. */ | |
394 | return 0; | |
395 | ||
396 | /* | |
397 | * Use a smoothed version of sensor data for movement calculations, to | |
398 | * combat noise without needing to rely so heavily on a threshold. | |
399 | * This improves tracking. | |
400 | * | |
401 | * The smoothed array is bigger than the original so that the smoothing | |
402 | * doesn't result in edge values being truncated. | |
403 | */ | |
404 | ||
405 | memset(dev->smooth, 0, 4 * sizeof(dev->smooth[0])); | |
406 | /* Pull base values, scaled up to help avoid truncation errors. */ | |
407 | for (i = 0; i < nb_sensors; i++) | |
408 | dev->smooth[i + 4] = xy_sensors[i] << ATP_SCALE; | |
409 | memset(&dev->smooth[nb_sensors + 4], 0, 4 * sizeof(dev->smooth[0])); | |
410 | ||
411 | for (pass = 0; pass < 4; pass++) { | |
412 | /* Handle edge. */ | |
413 | dev->smooth_tmp[0] = (dev->smooth[0] + dev->smooth[1]) / 2; | |
00081d37 | 414 | |
739204bc CS |
415 | /* Average values with neighbors. */ |
416 | for (i = 1; i < nb_sensors + 7; i++) | |
417 | dev->smooth_tmp[i] = (dev->smooth[i - 1] + | |
418 | dev->smooth[i] * 2 + | |
419 | dev->smooth[i + 1]) / 4; | |
420 | ||
421 | /* Handle other edge. */ | |
422 | dev->smooth_tmp[i] = (dev->smooth[i - 1] + dev->smooth[i]) / 2; | |
423 | ||
424 | memcpy(dev->smooth, dev->smooth_tmp, sizeof(dev->smooth)); | |
425 | } | |
426 | ||
427 | for (i = 0; i < nb_sensors + 8; i++) { | |
00081d37 | 428 | /* |
739204bc CS |
429 | * Skip values if they're small enough to be truncated to 0 |
430 | * by scale. Mostly noise. | |
00081d37 | 431 | */ |
739204bc CS |
432 | if ((dev->smooth[i] >> ATP_SCALE) > 0) { |
433 | pcum += dev->smooth[i] * i; | |
434 | psum += dev->smooth[i]; | |
435 | } | |
f7214ff4 SP |
436 | } |
437 | ||
438 | if (psum > 0) { | |
739204bc | 439 | *z = psum >> ATP_SCALE; /* Scale down pressure output. */ |
f7214ff4 SP |
440 | return pcum * fact / psum; |
441 | } | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
446 | static inline void atp_report_fingers(struct input_dev *input, int fingers) | |
447 | { | |
448 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); | |
449 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); | |
450 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); | |
451 | } | |
452 | ||
d83d213d SA |
453 | /* Check URB status and for correct length of data package */ |
454 | ||
455 | #define ATP_URB_STATUS_SUCCESS 0 | |
456 | #define ATP_URB_STATUS_ERROR 1 | |
457 | #define ATP_URB_STATUS_ERROR_FATAL 2 | |
458 | ||
459 | static int atp_status_check(struct urb *urb) | |
f7214ff4 | 460 | { |
f7214ff4 | 461 | struct atp *dev = urb->context; |
2d744b09 | 462 | struct usb_interface *intf = dev->intf; |
f7214ff4 SP |
463 | |
464 | switch (urb->status) { | |
465 | case 0: | |
466 | /* success */ | |
467 | break; | |
e1e02c9f | 468 | case -EOVERFLOW: |
7dce869f | 469 | if (!dev->overflow_warned) { |
2d744b09 | 470 | dev_warn(&intf->dev, |
67946d13 | 471 | "appletouch: OVERFLOW with data length %d, actual length is %d\n", |
09779678 | 472 | dev->info->datalen, dev->urb->actual_length); |
7dce869f | 473 | dev->overflow_warned = true; |
e1e02c9f | 474 | } |
f7214ff4 SP |
475 | case -ECONNRESET: |
476 | case -ENOENT: | |
477 | case -ESHUTDOWN: | |
478 | /* This urb is terminated, clean up */ | |
2d744b09 | 479 | dev_dbg(&intf->dev, |
67946d13 GKH |
480 | "atp_complete: urb shutting down with status: %d\n", |
481 | urb->status); | |
d83d213d SA |
482 | return ATP_URB_STATUS_ERROR_FATAL; |
483 | ||
f7214ff4 | 484 | default: |
2d744b09 | 485 | dev_dbg(&intf->dev, |
67946d13 GKH |
486 | "atp_complete: nonzero urb status received: %d\n", |
487 | urb->status); | |
d83d213d | 488 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
489 | } |
490 | ||
491 | /* drop incomplete datasets */ | |
09779678 | 492 | if (dev->urb->actual_length != dev->info->datalen) { |
9effa978 NB |
493 | dprintk("appletouch: incomplete data package" |
494 | " (first byte: %d, length: %d).\n", | |
495 | dev->data[0], dev->urb->actual_length); | |
d83d213d | 496 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
497 | } |
498 | ||
d83d213d SA |
499 | return ATP_URB_STATUS_SUCCESS; |
500 | } | |
9effa978 | 501 | |
09779678 SP |
502 | static void atp_detect_size(struct atp *dev) |
503 | { | |
504 | int i; | |
505 | ||
506 | /* 17" Powerbooks have extra X sensors */ | |
507 | for (i = dev->info->xsensors; i < ATP_XSENSORS; i++) { | |
508 | if (dev->xy_cur[i]) { | |
509 | ||
2d744b09 | 510 | dev_info(&dev->intf->dev, |
67946d13 | 511 | "appletouch: 17\" model detected.\n"); |
09779678 SP |
512 | |
513 | input_set_abs_params(dev->input, ABS_X, 0, | |
514 | (dev->info->xsensors_17 - 1) * | |
515 | dev->info->xfact - 1, | |
703e1488 | 516 | dev->info->fuzz, 0); |
09779678 SP |
517 | break; |
518 | } | |
519 | } | |
520 | } | |
521 | ||
d83d213d SA |
522 | /* |
523 | * USB interrupt callback functions | |
524 | */ | |
9effa978 | 525 | |
d83d213d SA |
526 | /* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */ |
527 | ||
528 | static void atp_complete_geyser_1_2(struct urb *urb) | |
529 | { | |
530 | int x, y, x_z, y_z, x_f, y_f; | |
531 | int retval, i, j; | |
7bbdba56 | 532 | int key, fingers; |
d83d213d SA |
533 | struct atp *dev = urb->context; |
534 | int status = atp_status_check(urb); | |
535 | ||
536 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
537 | return; | |
538 | else if (status == ATP_URB_STATUS_ERROR) | |
539 | goto exit; | |
540 | ||
541 | /* reorder the sensors values */ | |
09779678 | 542 | if (dev->info == &geyser2_info) { |
e1e02c9f MH |
543 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
544 | ||
545 | /* | |
546 | * The values are laid out like this: | |
547 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | |
548 | * '-' is an unused value. | |
549 | */ | |
550 | ||
551 | /* read X values */ | |
552 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
553 | dev->xy_cur[i] = dev->data[j]; | |
554 | dev->xy_cur[i + 1] = dev->data[j + 1]; | |
555 | } | |
556 | ||
557 | /* read Y values */ | |
558 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
559 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | |
560 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | |
561 | } | |
562 | } else { | |
563 | for (i = 0; i < 8; i++) { | |
564 | /* X values */ | |
7dce869f | 565 | dev->xy_cur[i + 0] = dev->data[5 * i + 2]; |
e1e02c9f MH |
566 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; |
567 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | |
568 | if (i < 2) | |
569 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | |
570 | ||
571 | /* Y values */ | |
09779678 SP |
572 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[5 * i + 1]; |
573 | dev->xy_cur[ATP_XSENSORS + i + 8] = dev->data[5 * i + 3]; | |
e1e02c9f | 574 | } |
f7214ff4 SP |
575 | } |
576 | ||
577 | dbg_dump("sample", dev->xy_cur); | |
578 | ||
579 | if (!dev->valid) { | |
580 | /* first sample */ | |
7dce869f | 581 | dev->valid = true; |
f7214ff4 | 582 | dev->x_old = dev->y_old = -1; |
d83d213d SA |
583 | |
584 | /* Store first sample */ | |
f7214ff4 SP |
585 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); |
586 | ||
d83d213d | 587 | /* Perform size detection, if not done already */ |
09779678 SP |
588 | if (unlikely(!dev->size_detect_done)) { |
589 | atp_detect_size(dev); | |
d83d213d | 590 | dev->size_detect_done = 1; |
9effa978 | 591 | goto exit; |
d83d213d SA |
592 | } |
593 | } | |
9effa978 | 594 | |
d83d213d SA |
595 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { |
596 | /* accumulate the change */ | |
6e49c1a4 | 597 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; |
d83d213d SA |
598 | dev->xy_acc[i] -= change; |
599 | ||
600 | /* prevent down drifting */ | |
601 | if (dev->xy_acc[i] < 0) | |
602 | dev->xy_acc[i] = 0; | |
603 | } | |
604 | ||
605 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
606 | ||
607 | dbg_dump("accumulator", dev->xy_acc); | |
608 | ||
739204bc | 609 | x = atp_calculate_abs(dev, 0, ATP_XSENSORS, |
09779678 | 610 | dev->info->xfact, &x_z, &x_f); |
739204bc | 611 | y = atp_calculate_abs(dev, ATP_XSENSORS, ATP_YSENSORS, |
09779678 SP |
612 | dev->info->yfact, &y_z, &y_f); |
613 | key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; | |
d83d213d | 614 | |
7bbdba56 CS |
615 | fingers = max(x_f, y_f); |
616 | ||
617 | if (x && y && fingers == dev->fingers_old) { | |
d83d213d | 618 | if (dev->x_old != -1) { |
739204bc CS |
619 | x = (dev->x_old * 7 + x) >> 3; |
620 | y = (dev->y_old * 7 + y) >> 3; | |
d83d213d SA |
621 | dev->x_old = x; |
622 | dev->y_old = y; | |
623 | ||
624 | if (debug > 1) | |
625 | printk(KERN_DEBUG "appletouch: " | |
626 | "X: %3d Y: %3d Xz: %3d Yz: %3d\n", | |
627 | x, y, x_z, y_z); | |
628 | ||
629 | input_report_key(dev->input, BTN_TOUCH, 1); | |
630 | input_report_abs(dev->input, ABS_X, x); | |
631 | input_report_abs(dev->input, ABS_Y, y); | |
632 | input_report_abs(dev->input, ABS_PRESSURE, | |
633 | min(ATP_PRESSURE, x_z + y_z)); | |
7bbdba56 | 634 | atp_report_fingers(dev->input, fingers); |
e1e02c9f | 635 | } |
d83d213d SA |
636 | dev->x_old = x; |
637 | dev->y_old = y; | |
638 | ||
639 | } else if (!x && !y) { | |
640 | ||
641 | dev->x_old = dev->y_old = -1; | |
7bbdba56 | 642 | dev->fingers_old = 0; |
d83d213d SA |
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); | |
646 | ||
647 | /* reset the accumulator on release */ | |
648 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
649 | } | |
650 | ||
7bbdba56 CS |
651 | if (fingers != dev->fingers_old) |
652 | dev->x_old = dev->y_old = -1; | |
653 | dev->fingers_old = fingers; | |
654 | ||
d83d213d SA |
655 | input_report_key(dev->input, BTN_LEFT, key); |
656 | input_sync(dev->input); | |
657 | ||
658 | exit: | |
659 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
660 | if (retval) | |
2d744b09 | 661 | dev_err(&dev->intf->dev, |
9c113dc6 GKH |
662 | "atp_complete: usb_submit_urb failed with result %d\n", |
663 | retval); | |
d83d213d SA |
664 | } |
665 | ||
666 | /* Interrupt function for older touchpads: GEYSER3/GEYSER4 */ | |
667 | ||
668 | static void atp_complete_geyser_3_4(struct urb *urb) | |
669 | { | |
670 | int x, y, x_z, y_z, x_f, y_f; | |
671 | int retval, i, j; | |
7bbdba56 | 672 | int key, fingers; |
d83d213d SA |
673 | struct atp *dev = urb->context; |
674 | int status = atp_status_check(urb); | |
675 | ||
676 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
677 | return; | |
678 | else if (status == ATP_URB_STATUS_ERROR) | |
679 | goto exit; | |
680 | ||
681 | /* Reorder the sensors values: | |
682 | * | |
683 | * The values are laid out like this: | |
684 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | |
685 | * '-' is an unused value. | |
686 | */ | |
687 | ||
688 | /* read X values */ | |
689 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
690 | dev->xy_cur[i] = dev->data[j + 1]; | |
691 | dev->xy_cur[i + 1] = dev->data[j + 2]; | |
692 | } | |
693 | /* read Y values */ | |
694 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
695 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | |
696 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | |
697 | } | |
698 | ||
699 | dbg_dump("sample", dev->xy_cur); | |
700 | ||
82a196f4 | 701 | /* Just update the base values (i.e. touchpad in untouched state) */ |
09779678 | 702 | if (dev->data[dev->info->datalen - 1] & ATP_STATUS_BASE_UPDATE) { |
f7214ff4 | 703 | |
d745b532 | 704 | dprintk("appletouch: updated base values\n"); |
82a196f4 SA |
705 | |
706 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
f7214ff4 SP |
707 | goto exit; |
708 | } | |
709 | ||
710 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | |
82a196f4 SA |
711 | /* calculate the change */ |
712 | dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i]; | |
713 | ||
714 | /* this is a round-robin value, so couple with that */ | |
715 | if (dev->xy_acc[i] > 127) | |
716 | dev->xy_acc[i] -= 256; | |
717 | ||
718 | if (dev->xy_acc[i] < -127) | |
719 | dev->xy_acc[i] += 256; | |
f7214ff4 SP |
720 | |
721 | /* prevent down drifting */ | |
722 | if (dev->xy_acc[i] < 0) | |
723 | dev->xy_acc[i] = 0; | |
724 | } | |
725 | ||
f7214ff4 SP |
726 | dbg_dump("accumulator", dev->xy_acc); |
727 | ||
739204bc | 728 | x = atp_calculate_abs(dev, 0, ATP_XSENSORS, |
09779678 | 729 | dev->info->xfact, &x_z, &x_f); |
739204bc | 730 | y = atp_calculate_abs(dev, ATP_XSENSORS, ATP_YSENSORS, |
09779678 | 731 | dev->info->yfact, &y_z, &y_f); |
739204bc | 732 | |
09779678 | 733 | key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; |
f7214ff4 | 734 | |
7bbdba56 CS |
735 | fingers = max(x_f, y_f); |
736 | ||
737 | if (x && y && fingers == dev->fingers_old) { | |
f7214ff4 | 738 | if (dev->x_old != -1) { |
739204bc CS |
739 | x = (dev->x_old * 7 + x) >> 3; |
740 | y = (dev->y_old * 7 + y) >> 3; | |
f7214ff4 SP |
741 | dev->x_old = x; |
742 | dev->y_old = y; | |
743 | ||
744 | if (debug > 1) | |
2a3e480d | 745 | printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " |
f7214ff4 SP |
746 | "Xz: %3d Yz: %3d\n", |
747 | x, y, x_z, y_z); | |
748 | ||
c5b7c7c3 DT |
749 | input_report_key(dev->input, BTN_TOUCH, 1); |
750 | input_report_abs(dev->input, ABS_X, x); | |
751 | input_report_abs(dev->input, ABS_Y, y); | |
752 | input_report_abs(dev->input, ABS_PRESSURE, | |
f7214ff4 | 753 | min(ATP_PRESSURE, x_z + y_z)); |
7bbdba56 | 754 | atp_report_fingers(dev->input, fingers); |
f7214ff4 SP |
755 | } |
756 | dev->x_old = x; | |
757 | dev->y_old = y; | |
5a6eb676 SS |
758 | |
759 | } else if (!x && !y) { | |
f7214ff4 SP |
760 | |
761 | dev->x_old = dev->y_old = -1; | |
7bbdba56 | 762 | dev->fingers_old = 0; |
c5b7c7c3 DT |
763 | input_report_key(dev->input, BTN_TOUCH, 0); |
764 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
765 | atp_report_fingers(dev->input, 0); | |
f7214ff4 SP |
766 | |
767 | /* reset the accumulator on release */ | |
768 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
937ad5c1 SS |
769 | } |
770 | ||
7bbdba56 CS |
771 | if (fingers != dev->fingers_old) |
772 | dev->x_old = dev->y_old = -1; | |
773 | dev->fingers_old = fingers; | |
774 | ||
46249ea6 AE |
775 | input_report_key(dev->input, BTN_LEFT, key); |
776 | input_sync(dev->input); | |
777 | ||
2a3e480d | 778 | /* |
d83d213d | 779 | * Geysers 3/4 will continue to send packets continually after |
2a3e480d DT |
780 | * the first touch unless reinitialised. Do so if it's been |
781 | * idle for a while in order to avoid waking the kernel up | |
d83d213d | 782 | * several hundred times a second. |
2a3e480d | 783 | */ |
d83d213d SA |
784 | |
785 | /* | |
786 | * Button must not be pressed when entering suspend, | |
787 | * otherwise we will never release the button. | |
788 | */ | |
789 | if (!x && !y && !key) { | |
790 | dev->idlecount++; | |
791 | if (dev->idlecount == 10) { | |
82a196f4 SA |
792 | dev->x_old = dev->y_old = -1; |
793 | dev->idlecount = 0; | |
d83d213d SA |
794 | schedule_work(&dev->work); |
795 | /* Don't resubmit urb here, wait for reinit */ | |
796 | return; | |
797 | } | |
798 | } else | |
799 | dev->idlecount = 0; | |
f7214ff4 | 800 | |
7dce869f | 801 | exit: |
f7214ff4 | 802 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); |
7dce869f | 803 | if (retval) |
2d744b09 | 804 | dev_err(&dev->intf->dev, |
9c113dc6 GKH |
805 | "atp_complete: usb_submit_urb failed with result %d\n", |
806 | retval); | |
f7214ff4 SP |
807 | } |
808 | ||
809 | static int atp_open(struct input_dev *input) | |
810 | { | |
7791bdae | 811 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
812 | |
813 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
814 | return -EIO; | |
815 | ||
816 | dev->open = 1; | |
817 | return 0; | |
818 | } | |
819 | ||
820 | static void atp_close(struct input_dev *input) | |
821 | { | |
7791bdae | 822 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
823 | |
824 | usb_kill_urb(dev->urb); | |
5a6eb676 | 825 | cancel_work_sync(&dev->work); |
f7214ff4 SP |
826 | dev->open = 0; |
827 | } | |
828 | ||
90d95ef6 ON |
829 | static int atp_handle_geyser(struct atp *dev) |
830 | { | |
09779678 | 831 | if (dev->info != &fountain_info) { |
90d95ef6 | 832 | /* switch to raw sensor mode */ |
80f8594f | 833 | if (atp_geyser_init(dev)) |
90d95ef6 ON |
834 | return -EIO; |
835 | ||
2d744b09 | 836 | dev_info(&dev->intf->dev, "Geyser mode initialized.\n"); |
90d95ef6 ON |
837 | } |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
7dce869f JB |
842 | static int atp_probe(struct usb_interface *iface, |
843 | const struct usb_device_id *id) | |
f7214ff4 | 844 | { |
c5b7c7c3 DT |
845 | struct atp *dev; |
846 | struct input_dev *input_dev; | |
847 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
848 | struct usb_host_interface *iface_desc; |
849 | struct usb_endpoint_descriptor *endpoint; | |
850 | int int_in_endpointAddr = 0; | |
5014186d | 851 | int i, error = -ENOMEM; |
09779678 | 852 | const struct atp_info *info = (const struct atp_info *)id->driver_info; |
f7214ff4 SP |
853 | |
854 | /* set up the endpoint information */ | |
855 | /* use only the first interrupt-in endpoint */ | |
856 | iface_desc = iface->cur_altsetting; | |
857 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
858 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 859 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
860 | /* we found an interrupt in endpoint */ |
861 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
862 | break; | |
863 | } | |
864 | } | |
865 | if (!int_in_endpointAddr) { | |
9c113dc6 | 866 | dev_err(&iface->dev, "Could not find int-in endpoint\n"); |
c5b7c7c3 | 867 | return -EIO; |
f7214ff4 SP |
868 | } |
869 | ||
c5b7c7c3 DT |
870 | /* allocate memory for our device state and initialize it */ |
871 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
872 | input_dev = input_allocate_device(); | |
873 | if (!dev || !input_dev) { | |
9c113dc6 | 874 | dev_err(&iface->dev, "Out of memory\n"); |
c5b7c7c3 DT |
875 | goto err_free_devs; |
876 | } | |
877 | ||
878 | dev->udev = udev; | |
2d744b09 | 879 | dev->intf = iface; |
c5b7c7c3 | 880 | dev->input = input_dev; |
09779678 | 881 | dev->info = info; |
7dce869f | 882 | dev->overflow_warned = false; |
9effa978 | 883 | |
f7214ff4 | 884 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); |
5014186d | 885 | if (!dev->urb) |
c5b7c7c3 | 886 | goto err_free_devs; |
c5b7c7c3 | 887 | |
997ea58e DM |
888 | dev->data = usb_alloc_coherent(dev->udev, dev->info->datalen, GFP_KERNEL, |
889 | &dev->urb->transfer_dma); | |
5014186d | 890 | if (!dev->data) |
c5b7c7c3 | 891 | goto err_free_urb; |
c5b7c7c3 | 892 | |
09779678 SP |
893 | usb_fill_int_urb(dev->urb, udev, |
894 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
895 | dev->data, dev->info->datalen, | |
896 | dev->info->callback, dev, 1); | |
f7214ff4 | 897 | |
90d95ef6 ON |
898 | error = atp_handle_geyser(dev); |
899 | if (error) | |
900 | goto err_free_buffer; | |
901 | ||
c5b7c7c3 DT |
902 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
903 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
904 | ||
905 | input_dev->name = "appletouch"; | |
906 | input_dev->phys = dev->phys; | |
907 | usb_to_input_id(dev->udev, &input_dev->id); | |
c0f82d57 | 908 | input_dev->dev.parent = &iface->dev; |
f7214ff4 | 909 | |
7791bdae DT |
910 | input_set_drvdata(input_dev, dev); |
911 | ||
c5b7c7c3 DT |
912 | input_dev->open = atp_open; |
913 | input_dev->close = atp_close; | |
f7214ff4 | 914 | |
c5b7c7c3 | 915 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 916 | |
09779678 SP |
917 | input_set_abs_params(input_dev, ABS_X, 0, |
918 | (dev->info->xsensors - 1) * dev->info->xfact - 1, | |
703e1488 | 919 | dev->info->fuzz, 0); |
09779678 SP |
920 | input_set_abs_params(input_dev, ABS_Y, 0, |
921 | (dev->info->ysensors - 1) * dev->info->yfact - 1, | |
703e1488 | 922 | dev->info->fuzz, 0); |
c5b7c7c3 | 923 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 924 | |
c5b7c7c3 DT |
925 | set_bit(EV_KEY, input_dev->evbit); |
926 | set_bit(BTN_TOUCH, input_dev->keybit); | |
927 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
928 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
929 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
930 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 931 | |
5014186d DT |
932 | error = input_register_device(dev->input); |
933 | if (error) | |
934 | goto err_free_buffer; | |
f7214ff4 | 935 | |
c5b7c7c3 DT |
936 | /* save our data pointer in this interface device */ |
937 | usb_set_intfdata(iface, dev); | |
f7214ff4 | 938 | |
5a6eb676 SS |
939 | INIT_WORK(&dev->work, atp_reinit); |
940 | ||
f7214ff4 SP |
941 | return 0; |
942 | ||
5014186d | 943 | err_free_buffer: |
997ea58e DM |
944 | usb_free_coherent(dev->udev, dev->info->datalen, |
945 | dev->data, dev->urb->transfer_dma); | |
c5b7c7c3 | 946 | err_free_urb: |
f7214ff4 | 947 | usb_free_urb(dev->urb); |
c5b7c7c3 | 948 | err_free_devs: |
f7214ff4 | 949 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 950 | kfree(dev); |
c5b7c7c3 | 951 | input_free_device(input_dev); |
5014186d | 952 | return error; |
f7214ff4 SP |
953 | } |
954 | ||
955 | static void atp_disconnect(struct usb_interface *iface) | |
956 | { | |
957 | struct atp *dev = usb_get_intfdata(iface); | |
958 | ||
959 | usb_set_intfdata(iface, NULL); | |
960 | if (dev) { | |
961 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 962 | input_unregister_device(dev->input); |
997ea58e DM |
963 | usb_free_coherent(dev->udev, dev->info->datalen, |
964 | dev->data, dev->urb->transfer_dma); | |
7af569ab | 965 | usb_free_urb(dev->urb); |
f7214ff4 SP |
966 | kfree(dev); |
967 | } | |
2d744b09 | 968 | dev_info(&iface->dev, "input: appletouch disconnected\n"); |
f7214ff4 SP |
969 | } |
970 | ||
90d95ef6 ON |
971 | static int atp_recover(struct atp *dev) |
972 | { | |
973 | int error; | |
974 | ||
975 | error = atp_handle_geyser(dev); | |
976 | if (error) | |
977 | return error; | |
978 | ||
979 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
980 | return -EIO; | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
f7214ff4 SP |
985 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) |
986 | { | |
987 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 988 | |
f7214ff4 | 989 | usb_kill_urb(dev->urb); |
f7214ff4 SP |
990 | return 0; |
991 | } | |
992 | ||
993 | static int atp_resume(struct usb_interface *iface) | |
994 | { | |
995 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 996 | |
f7214ff4 SP |
997 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
998 | return -EIO; | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
90d95ef6 ON |
1003 | static int atp_reset_resume(struct usb_interface *iface) |
1004 | { | |
1005 | struct atp *dev = usb_get_intfdata(iface); | |
1006 | ||
1007 | return atp_recover(dev); | |
1008 | } | |
1009 | ||
f7214ff4 | 1010 | static struct usb_driver atp_driver = { |
f7214ff4 SP |
1011 | .name = "appletouch", |
1012 | .probe = atp_probe, | |
1013 | .disconnect = atp_disconnect, | |
1014 | .suspend = atp_suspend, | |
1015 | .resume = atp_resume, | |
90d95ef6 | 1016 | .reset_resume = atp_reset_resume, |
f7214ff4 SP |
1017 | .id_table = atp_table, |
1018 | }; | |
1019 | ||
08642e7c | 1020 | module_usb_driver(atp_driver); |