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Commit | Line | Data |
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f7214ff4 | 1 | /* |
9effa978 | 2 | * Apple USB Touchpad (for post-February 2005 PowerBooks and MacBooks) driver |
f7214ff4 SP |
3 | * |
4 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) | |
7dce869f | 5 | * Copyright (C) 2005-2008 Johannes Berg (johannes@sipsolutions.net) |
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 */ | |
51 | }; | |
52 | ||
53 | static void atp_complete_geyser_1_2(struct urb *urb); | |
54 | static void atp_complete_geyser_3_4(struct urb *urb); | |
55 | ||
56 | static const struct atp_info fountain_info = { | |
57 | .xsensors = 16, | |
58 | .xsensors_17 = 26, | |
59 | .ysensors = 16, | |
60 | .xfact = 64, | |
61 | .yfact = 43, | |
62 | .datalen = 81, | |
63 | .callback = atp_complete_geyser_1_2, | |
64 | }; | |
65 | ||
66 | static const struct atp_info geyser1_info = { | |
67 | .xsensors = 16, | |
68 | .xsensors_17 = 26, | |
69 | .ysensors = 16, | |
70 | .xfact = 64, | |
71 | .yfact = 43, | |
72 | .datalen = 81, | |
73 | .callback = atp_complete_geyser_1_2, | |
74 | }; | |
75 | ||
76 | static const struct atp_info geyser2_info = { | |
77 | .xsensors = 15, | |
78 | .xsensors_17 = 20, | |
79 | .ysensors = 9, | |
80 | .xfact = 64, | |
81 | .yfact = 43, | |
82 | .datalen = 64, | |
83 | .callback = atp_complete_geyser_1_2, | |
84 | }; | |
85 | ||
86 | static const struct atp_info geyser3_info = { | |
87 | .xsensors = 20, | |
88 | .ysensors = 10, | |
89 | .xfact = 64, | |
90 | .yfact = 64, | |
91 | .datalen = 64, | |
92 | .callback = atp_complete_geyser_3_4, | |
e9542dff | 93 | }; |
0035a1dc | 94 | |
09779678 SP |
95 | static const struct atp_info geyser4_info = { |
96 | .xsensors = 20, | |
97 | .ysensors = 10, | |
98 | .xfact = 64, | |
99 | .yfact = 64, | |
100 | .datalen = 64, | |
101 | .callback = atp_complete_geyser_3_4, | |
102 | }; | |
103 | ||
104 | #define ATP_DEVICE(prod, info) \ | |
e9542dff | 105 | { \ |
c5b7c7c3 | 106 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ |
f7214ff4 SP |
107 | USB_DEVICE_ID_MATCH_INT_CLASS | \ |
108 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ | |
e9542dff | 109 | .idVendor = 0x05ac, /* Apple */ \ |
f7214ff4 SP |
110 | .idProduct = (prod), \ |
111 | .bInterfaceClass = 0x03, \ | |
e9542dff | 112 | .bInterfaceProtocol = 0x02, \ |
09779678 | 113 | .driver_info = (unsigned long) &info, \ |
e9542dff SA |
114 | } |
115 | ||
116 | /* | |
117 | * Table of devices (Product IDs) that work with this driver. | |
118 | * (The names come from Info.plist in AppleUSBTrackpad.kext, | |
119 | * According to Info.plist Geyser IV is the same as Geyser III.) | |
120 | */ | |
f7214ff4 | 121 | |
09779678 | 122 | static struct usb_device_id atp_table[] = { |
7dce869f | 123 | /* PowerBooks Feb 2005, iBooks G4 */ |
09779678 SP |
124 | ATP_DEVICE(0x020e, fountain_info), /* FOUNTAIN ANSI */ |
125 | ATP_DEVICE(0x020f, fountain_info), /* FOUNTAIN ISO */ | |
126 | ATP_DEVICE(0x030a, fountain_info), /* FOUNTAIN TP ONLY */ | |
127 | ATP_DEVICE(0x030b, geyser1_info), /* GEYSER 1 TP ONLY */ | |
e1e02c9f MH |
128 | |
129 | /* PowerBooks Oct 2005 */ | |
09779678 SP |
130 | ATP_DEVICE(0x0214, geyser2_info), /* GEYSER 2 ANSI */ |
131 | ATP_DEVICE(0x0215, geyser2_info), /* GEYSER 2 ISO */ | |
132 | ATP_DEVICE(0x0216, geyser2_info), /* GEYSER 2 JIS */ | |
e1e02c9f | 133 | |
009ad0e7 | 134 | /* Core Duo MacBook & MacBook Pro */ |
09779678 SP |
135 | ATP_DEVICE(0x0217, geyser3_info), /* GEYSER 3 ANSI */ |
136 | ATP_DEVICE(0x0218, geyser3_info), /* GEYSER 3 ISO */ | |
137 | ATP_DEVICE(0x0219, geyser3_info), /* GEYSER 3 JIS */ | |
9effa978 | 138 | |
009ad0e7 | 139 | /* Core2 Duo MacBook & MacBook Pro */ |
09779678 SP |
140 | ATP_DEVICE(0x021a, geyser4_info), /* GEYSER 4 ANSI */ |
141 | ATP_DEVICE(0x021b, geyser4_info), /* GEYSER 4 ISO */ | |
142 | ATP_DEVICE(0x021c, geyser4_info), /* GEYSER 4 JIS */ | |
009ad0e7 | 143 | |
7dce869f | 144 | /* Core2 Duo MacBook3,1 */ |
09779678 SP |
145 | ATP_DEVICE(0x0229, geyser4_info), /* GEYSER 4 HF ANSI */ |
146 | ATP_DEVICE(0x022a, geyser4_info), /* GEYSER 4 HF ISO */ | |
147 | ATP_DEVICE(0x022b, geyser4_info), /* GEYSER 4 HF JIS */ | |
0035a1dc | 148 | |
e1e02c9f MH |
149 | /* Terminating entry */ |
150 | { } | |
f7214ff4 | 151 | }; |
7dce869f | 152 | MODULE_DEVICE_TABLE(usb, atp_table); |
f7214ff4 | 153 | |
09779678 | 154 | /* maximum number of sensors */ |
f7214ff4 SP |
155 | #define ATP_XSENSORS 26 |
156 | #define ATP_YSENSORS 16 | |
157 | ||
158 | /* amount of fuzz this touchpad generates */ | |
159 | #define ATP_FUZZ 16 | |
160 | ||
161 | /* maximum pressure this driver will report */ | |
162 | #define ATP_PRESSURE 300 | |
f7214ff4 SP |
163 | |
164 | /* | |
165 | * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is | |
166 | * ignored. | |
167 | */ | |
168 | #define ATP_THRESHOLD 5 | |
169 | ||
2a3e480d DT |
170 | /* Geyser initialization constants */ |
171 | #define ATP_GEYSER_MODE_READ_REQUEST_ID 1 | |
172 | #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9 | |
173 | #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300 | |
174 | #define ATP_GEYSER_MODE_REQUEST_INDEX 0 | |
175 | #define ATP_GEYSER_MODE_VENDOR_VALUE 0x04 | |
9effa978 | 176 | |
82a196f4 SA |
177 | /** |
178 | * enum atp_status_bits - status bit meanings | |
179 | * | |
180 | * These constants represent the meaning of the status bits. | |
181 | * (only Geyser 3/4) | |
182 | * | |
183 | * @ATP_STATUS_BUTTON: The button was pressed | |
184 | * @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad) | |
185 | * @ATP_STATUS_FROM_RESET: Reset previously performed | |
186 | */ | |
187 | enum atp_status_bits { | |
188 | ATP_STATUS_BUTTON = BIT(0), | |
189 | ATP_STATUS_BASE_UPDATE = BIT(2), | |
190 | ATP_STATUS_FROM_RESET = BIT(4), | |
191 | }; | |
192 | ||
f7214ff4 SP |
193 | /* Structure to hold all of our device specific stuff */ |
194 | struct atp { | |
c5b7c7c3 | 195 | char phys[64]; |
7dce869f | 196 | struct usb_device *udev; /* usb device */ |
2d744b09 | 197 | struct usb_interface *intf; /* usb interface */ |
7dce869f | 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 */ | |
6e49c1a4 BH |
208 | signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; |
209 | signed char 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 | */ | |
80f8594f | 256 | static int atp_geyser_init(struct atp *dev) |
5a6eb676 | 257 | { |
80f8594f | 258 | struct usb_device *udev = dev->udev; |
0385c5ee | 259 | char *data; |
5a6eb676 | 260 | int size; |
7dce869f | 261 | int i; |
0385c5ee BC |
262 | int ret; |
263 | ||
264 | data = kmalloc(8, GFP_KERNEL); | |
265 | if (!data) { | |
2d744b09 | 266 | dev_err(&dev->intf->dev, "Out of memory\n"); |
0385c5ee BC |
267 | return -ENOMEM; |
268 | } | |
5a6eb676 SS |
269 | |
270 | size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
2a3e480d | 271 | ATP_GEYSER_MODE_READ_REQUEST_ID, |
5a6eb676 | 272 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d | 273 | ATP_GEYSER_MODE_REQUEST_VALUE, |
0385c5ee | 274 | ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); |
5a6eb676 SS |
275 | |
276 | if (size != 8) { | |
7dce869f JB |
277 | dprintk("atp_geyser_init: read error\n"); |
278 | for (i = 0; i < 8; i++) | |
279 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
280 | ||
2d744b09 | 281 | dev_err(&dev->intf->dev, "Failed to read mode from device.\n"); |
0385c5ee BC |
282 | ret = -EIO; |
283 | goto out_free; | |
5a6eb676 SS |
284 | } |
285 | ||
286 | /* Apply the mode switch */ | |
2a3e480d | 287 | data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; |
5a6eb676 SS |
288 | |
289 | size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
2a3e480d | 290 | ATP_GEYSER_MODE_WRITE_REQUEST_ID, |
5a6eb676 | 291 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
2a3e480d | 292 | ATP_GEYSER_MODE_REQUEST_VALUE, |
0385c5ee | 293 | ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); |
5a6eb676 SS |
294 | |
295 | if (size != 8) { | |
7dce869f JB |
296 | dprintk("atp_geyser_init: write error\n"); |
297 | for (i = 0; i < 8; i++) | |
298 | dprintk("appletouch[%d]: %d\n", i, data[i]); | |
299 | ||
2d744b09 | 300 | dev_err(&dev->intf->dev, "Failed to request geyser raw mode\n"); |
0385c5ee BC |
301 | ret = -EIO; |
302 | goto out_free; | |
5a6eb676 | 303 | } |
0385c5ee BC |
304 | ret = 0; |
305 | out_free: | |
306 | kfree(data); | |
307 | return ret; | |
5a6eb676 SS |
308 | } |
309 | ||
2a3e480d DT |
310 | /* |
311 | * Reinitialise the device. This usually stops stream of empty packets | |
312 | * coming from it. | |
313 | */ | |
5a6eb676 SS |
314 | static void atp_reinit(struct work_struct *work) |
315 | { | |
316 | struct atp *dev = container_of(work, struct atp, work); | |
2a3e480d | 317 | int retval; |
5a6eb676 | 318 | |
7dce869f | 319 | dprintk("appletouch: putting appletouch to sleep (reinit)\n"); |
80f8594f | 320 | atp_geyser_init(dev); |
2a3e480d DT |
321 | |
322 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
7dce869f | 323 | if (retval) |
2d744b09 | 324 | dev_err(&dev->intf->dev, |
9c113dc6 GKH |
325 | "atp_reinit: usb_submit_urb failed with error %d\n", |
326 | retval); | |
5a6eb676 SS |
327 | } |
328 | ||
f7214ff4 SP |
329 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, |
330 | int *z, int *fingers) | |
331 | { | |
332 | int i; | |
333 | /* values to calculate mean */ | |
334 | int pcum = 0, psum = 0; | |
00081d37 | 335 | int is_increasing = 0; |
f7214ff4 SP |
336 | |
337 | *fingers = 0; | |
338 | ||
339 | for (i = 0; i < nb_sensors; i++) { | |
00081d37 JP |
340 | if (xy_sensors[i] < threshold) { |
341 | if (is_increasing) | |
342 | is_increasing = 0; | |
343 | ||
f7214ff4 | 344 | continue; |
00081d37 JP |
345 | } |
346 | ||
347 | /* | |
348 | * Makes the finger detection more versatile. For example, | |
349 | * two fingers with no gap will be detected. Also, my | |
350 | * tests show it less likely to have intermittent loss | |
351 | * of multiple finger readings while moving around (scrolling). | |
352 | * | |
353 | * Changes the multiple finger detection to counting humps on | |
354 | * sensors (transitions from nonincreasing to increasing) | |
355 | * instead of counting transitions from low sensors (no | |
356 | * finger reading) to high sensors (finger above | |
357 | * sensor) | |
358 | * | |
359 | * - Jason Parekh <jasonparekh@gmail.com> | |
360 | */ | |
7dce869f JB |
361 | if (i < 1 || |
362 | (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { | |
f7214ff4 | 363 | (*fingers)++; |
00081d37 | 364 | is_increasing = 1; |
05e882f8 | 365 | } else if (i > 0 && (xy_sensors[i - 1] - xy_sensors[i] > threshold)) { |
00081d37 JP |
366 | is_increasing = 0; |
367 | } | |
368 | ||
369 | /* | |
7dce869f JB |
370 | * Subtracts threshold so a high sensor that just passes the |
371 | * threshold won't skew the calculated absolute coordinate. | |
372 | * Fixes an issue where slowly moving the mouse would | |
373 | * occasionally jump a number of pixels (slowly moving the | |
374 | * finger makes this issue most apparent.) | |
00081d37 JP |
375 | */ |
376 | pcum += (xy_sensors[i] - threshold) * i; | |
377 | psum += (xy_sensors[i] - threshold); | |
f7214ff4 SP |
378 | } |
379 | ||
380 | if (psum > 0) { | |
381 | *z = psum; | |
382 | return pcum * fact / psum; | |
383 | } | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static inline void atp_report_fingers(struct input_dev *input, int fingers) | |
389 | { | |
390 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); | |
391 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); | |
392 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); | |
393 | } | |
394 | ||
d83d213d SA |
395 | /* Check URB status and for correct length of data package */ |
396 | ||
397 | #define ATP_URB_STATUS_SUCCESS 0 | |
398 | #define ATP_URB_STATUS_ERROR 1 | |
399 | #define ATP_URB_STATUS_ERROR_FATAL 2 | |
400 | ||
401 | static int atp_status_check(struct urb *urb) | |
f7214ff4 | 402 | { |
f7214ff4 | 403 | struct atp *dev = urb->context; |
2d744b09 | 404 | struct usb_interface *intf = dev->intf; |
f7214ff4 SP |
405 | |
406 | switch (urb->status) { | |
407 | case 0: | |
408 | /* success */ | |
409 | break; | |
e1e02c9f | 410 | case -EOVERFLOW: |
7dce869f | 411 | if (!dev->overflow_warned) { |
2d744b09 | 412 | dev_warn(&intf->dev, |
67946d13 | 413 | "appletouch: OVERFLOW with data length %d, actual length is %d\n", |
09779678 | 414 | dev->info->datalen, dev->urb->actual_length); |
7dce869f | 415 | dev->overflow_warned = true; |
e1e02c9f | 416 | } |
f7214ff4 SP |
417 | case -ECONNRESET: |
418 | case -ENOENT: | |
419 | case -ESHUTDOWN: | |
420 | /* This urb is terminated, clean up */ | |
2d744b09 | 421 | dev_dbg(&intf->dev, |
67946d13 GKH |
422 | "atp_complete: urb shutting down with status: %d\n", |
423 | urb->status); | |
d83d213d SA |
424 | return ATP_URB_STATUS_ERROR_FATAL; |
425 | ||
f7214ff4 | 426 | default: |
2d744b09 | 427 | dev_dbg(&intf->dev, |
67946d13 GKH |
428 | "atp_complete: nonzero urb status received: %d\n", |
429 | urb->status); | |
d83d213d | 430 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
431 | } |
432 | ||
433 | /* drop incomplete datasets */ | |
09779678 | 434 | if (dev->urb->actual_length != dev->info->datalen) { |
9effa978 NB |
435 | dprintk("appletouch: incomplete data package" |
436 | " (first byte: %d, length: %d).\n", | |
437 | dev->data[0], dev->urb->actual_length); | |
d83d213d | 438 | return ATP_URB_STATUS_ERROR; |
f7214ff4 SP |
439 | } |
440 | ||
d83d213d SA |
441 | return ATP_URB_STATUS_SUCCESS; |
442 | } | |
9effa978 | 443 | |
09779678 SP |
444 | static void atp_detect_size(struct atp *dev) |
445 | { | |
446 | int i; | |
447 | ||
448 | /* 17" Powerbooks have extra X sensors */ | |
449 | for (i = dev->info->xsensors; i < ATP_XSENSORS; i++) { | |
450 | if (dev->xy_cur[i]) { | |
451 | ||
2d744b09 | 452 | dev_info(&dev->intf->dev, |
67946d13 | 453 | "appletouch: 17\" model detected.\n"); |
09779678 SP |
454 | |
455 | input_set_abs_params(dev->input, ABS_X, 0, | |
456 | (dev->info->xsensors_17 - 1) * | |
457 | dev->info->xfact - 1, | |
458 | ATP_FUZZ, 0); | |
459 | break; | |
460 | } | |
461 | } | |
462 | } | |
463 | ||
d83d213d SA |
464 | /* |
465 | * USB interrupt callback functions | |
466 | */ | |
9effa978 | 467 | |
d83d213d SA |
468 | /* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */ |
469 | ||
470 | static void atp_complete_geyser_1_2(struct urb *urb) | |
471 | { | |
472 | int x, y, x_z, y_z, x_f, y_f; | |
473 | int retval, i, j; | |
474 | int key; | |
475 | struct atp *dev = urb->context; | |
476 | int status = atp_status_check(urb); | |
477 | ||
478 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
479 | return; | |
480 | else if (status == ATP_URB_STATUS_ERROR) | |
481 | goto exit; | |
482 | ||
483 | /* reorder the sensors values */ | |
09779678 | 484 | if (dev->info == &geyser2_info) { |
e1e02c9f MH |
485 | memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); |
486 | ||
487 | /* | |
488 | * The values are laid out like this: | |
489 | * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... | |
490 | * '-' is an unused value. | |
491 | */ | |
492 | ||
493 | /* read X values */ | |
494 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
495 | dev->xy_cur[i] = dev->data[j]; | |
496 | dev->xy_cur[i + 1] = dev->data[j + 1]; | |
497 | } | |
498 | ||
499 | /* read Y values */ | |
500 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
501 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; | |
502 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; | |
503 | } | |
504 | } else { | |
505 | for (i = 0; i < 8; i++) { | |
506 | /* X values */ | |
7dce869f | 507 | dev->xy_cur[i + 0] = dev->data[5 * i + 2]; |
e1e02c9f MH |
508 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; |
509 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; | |
510 | if (i < 2) | |
511 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; | |
512 | ||
513 | /* Y values */ | |
09779678 SP |
514 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[5 * i + 1]; |
515 | dev->xy_cur[ATP_XSENSORS + i + 8] = dev->data[5 * i + 3]; | |
e1e02c9f | 516 | } |
f7214ff4 SP |
517 | } |
518 | ||
519 | dbg_dump("sample", dev->xy_cur); | |
520 | ||
521 | if (!dev->valid) { | |
522 | /* first sample */ | |
7dce869f | 523 | dev->valid = true; |
f7214ff4 | 524 | dev->x_old = dev->y_old = -1; |
d83d213d SA |
525 | |
526 | /* Store first sample */ | |
f7214ff4 SP |
527 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); |
528 | ||
d83d213d | 529 | /* Perform size detection, if not done already */ |
09779678 SP |
530 | if (unlikely(!dev->size_detect_done)) { |
531 | atp_detect_size(dev); | |
d83d213d | 532 | dev->size_detect_done = 1; |
9effa978 | 533 | goto exit; |
d83d213d SA |
534 | } |
535 | } | |
9effa978 | 536 | |
d83d213d SA |
537 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { |
538 | /* accumulate the change */ | |
6e49c1a4 | 539 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; |
d83d213d SA |
540 | dev->xy_acc[i] -= change; |
541 | ||
542 | /* prevent down drifting */ | |
543 | if (dev->xy_acc[i] < 0) | |
544 | dev->xy_acc[i] = 0; | |
545 | } | |
546 | ||
547 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
548 | ||
549 | dbg_dump("accumulator", dev->xy_acc); | |
550 | ||
551 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
09779678 | 552 | dev->info->xfact, &x_z, &x_f); |
d83d213d | 553 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, |
09779678 SP |
554 | dev->info->yfact, &y_z, &y_f); |
555 | key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; | |
d83d213d SA |
556 | |
557 | if (x && y) { | |
558 | if (dev->x_old != -1) { | |
559 | x = (dev->x_old * 3 + x) >> 2; | |
560 | y = (dev->y_old * 3 + y) >> 2; | |
561 | dev->x_old = x; | |
562 | dev->y_old = y; | |
563 | ||
564 | if (debug > 1) | |
565 | printk(KERN_DEBUG "appletouch: " | |
566 | "X: %3d Y: %3d Xz: %3d Yz: %3d\n", | |
567 | x, y, x_z, y_z); | |
568 | ||
569 | input_report_key(dev->input, BTN_TOUCH, 1); | |
570 | input_report_abs(dev->input, ABS_X, x); | |
571 | input_report_abs(dev->input, ABS_Y, y); | |
572 | input_report_abs(dev->input, ABS_PRESSURE, | |
573 | min(ATP_PRESSURE, x_z + y_z)); | |
574 | atp_report_fingers(dev->input, max(x_f, y_f)); | |
e1e02c9f | 575 | } |
d83d213d SA |
576 | dev->x_old = x; |
577 | dev->y_old = y; | |
578 | ||
579 | } else if (!x && !y) { | |
580 | ||
581 | dev->x_old = dev->y_old = -1; | |
582 | input_report_key(dev->input, BTN_TOUCH, 0); | |
583 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
584 | atp_report_fingers(dev->input, 0); | |
585 | ||
586 | /* reset the accumulator on release */ | |
587 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
588 | } | |
589 | ||
590 | input_report_key(dev->input, BTN_LEFT, key); | |
591 | input_sync(dev->input); | |
592 | ||
593 | exit: | |
594 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); | |
595 | if (retval) | |
2d744b09 | 596 | dev_err(&dev->intf->dev, |
9c113dc6 GKH |
597 | "atp_complete: usb_submit_urb failed with result %d\n", |
598 | retval); | |
d83d213d SA |
599 | } |
600 | ||
601 | /* Interrupt function for older touchpads: GEYSER3/GEYSER4 */ | |
602 | ||
603 | static void atp_complete_geyser_3_4(struct urb *urb) | |
604 | { | |
605 | int x, y, x_z, y_z, x_f, y_f; | |
606 | int retval, i, j; | |
607 | int key; | |
608 | struct atp *dev = urb->context; | |
609 | int status = atp_status_check(urb); | |
610 | ||
611 | if (status == ATP_URB_STATUS_ERROR_FATAL) | |
612 | return; | |
613 | else if (status == ATP_URB_STATUS_ERROR) | |
614 | goto exit; | |
615 | ||
616 | /* Reorder the sensors values: | |
617 | * | |
618 | * The values are laid out like this: | |
619 | * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... | |
620 | * '-' is an unused value. | |
621 | */ | |
622 | ||
623 | /* read X values */ | |
624 | for (i = 0, j = 19; i < 20; i += 2, j += 3) { | |
625 | dev->xy_cur[i] = dev->data[j + 1]; | |
626 | dev->xy_cur[i + 1] = dev->data[j + 2]; | |
627 | } | |
628 | /* read Y values */ | |
629 | for (i = 0, j = 1; i < 9; i += 2, j += 3) { | |
630 | dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; | |
631 | dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; | |
632 | } | |
633 | ||
634 | dbg_dump("sample", dev->xy_cur); | |
635 | ||
82a196f4 | 636 | /* Just update the base values (i.e. touchpad in untouched state) */ |
09779678 | 637 | if (dev->data[dev->info->datalen - 1] & ATP_STATUS_BASE_UPDATE) { |
f7214ff4 | 638 | |
d745b532 | 639 | dprintk("appletouch: updated base values\n"); |
82a196f4 SA |
640 | |
641 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); | |
f7214ff4 SP |
642 | goto exit; |
643 | } | |
644 | ||
645 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { | |
82a196f4 SA |
646 | /* calculate the change */ |
647 | dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i]; | |
648 | ||
649 | /* this is a round-robin value, so couple with that */ | |
650 | if (dev->xy_acc[i] > 127) | |
651 | dev->xy_acc[i] -= 256; | |
652 | ||
653 | if (dev->xy_acc[i] < -127) | |
654 | dev->xy_acc[i] += 256; | |
f7214ff4 SP |
655 | |
656 | /* prevent down drifting */ | |
657 | if (dev->xy_acc[i] < 0) | |
658 | dev->xy_acc[i] = 0; | |
659 | } | |
660 | ||
f7214ff4 SP |
661 | dbg_dump("accumulator", dev->xy_acc); |
662 | ||
663 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, | |
09779678 | 664 | dev->info->xfact, &x_z, &x_f); |
f7214ff4 | 665 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, |
09779678 SP |
666 | dev->info->yfact, &y_z, &y_f); |
667 | key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; | |
f7214ff4 SP |
668 | |
669 | if (x && y) { | |
670 | if (dev->x_old != -1) { | |
671 | x = (dev->x_old * 3 + x) >> 2; | |
672 | y = (dev->y_old * 3 + y) >> 2; | |
673 | dev->x_old = x; | |
674 | dev->y_old = y; | |
675 | ||
676 | if (debug > 1) | |
2a3e480d | 677 | printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " |
f7214ff4 SP |
678 | "Xz: %3d Yz: %3d\n", |
679 | x, y, x_z, y_z); | |
680 | ||
c5b7c7c3 DT |
681 | input_report_key(dev->input, BTN_TOUCH, 1); |
682 | input_report_abs(dev->input, ABS_X, x); | |
683 | input_report_abs(dev->input, ABS_Y, y); | |
684 | input_report_abs(dev->input, ABS_PRESSURE, | |
f7214ff4 | 685 | min(ATP_PRESSURE, x_z + y_z)); |
c5b7c7c3 | 686 | atp_report_fingers(dev->input, max(x_f, y_f)); |
f7214ff4 SP |
687 | } |
688 | dev->x_old = x; | |
689 | dev->y_old = y; | |
5a6eb676 SS |
690 | |
691 | } else if (!x && !y) { | |
f7214ff4 SP |
692 | |
693 | dev->x_old = dev->y_old = -1; | |
c5b7c7c3 DT |
694 | input_report_key(dev->input, BTN_TOUCH, 0); |
695 | input_report_abs(dev->input, ABS_PRESSURE, 0); | |
696 | atp_report_fingers(dev->input, 0); | |
f7214ff4 SP |
697 | |
698 | /* reset the accumulator on release */ | |
699 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); | |
937ad5c1 SS |
700 | } |
701 | ||
46249ea6 AE |
702 | input_report_key(dev->input, BTN_LEFT, key); |
703 | input_sync(dev->input); | |
704 | ||
2a3e480d | 705 | /* |
d83d213d | 706 | * Geysers 3/4 will continue to send packets continually after |
2a3e480d DT |
707 | * the first touch unless reinitialised. Do so if it's been |
708 | * idle for a while in order to avoid waking the kernel up | |
d83d213d | 709 | * several hundred times a second. |
2a3e480d | 710 | */ |
d83d213d SA |
711 | |
712 | /* | |
713 | * Button must not be pressed when entering suspend, | |
714 | * otherwise we will never release the button. | |
715 | */ | |
716 | if (!x && !y && !key) { | |
717 | dev->idlecount++; | |
718 | if (dev->idlecount == 10) { | |
82a196f4 SA |
719 | dev->x_old = dev->y_old = -1; |
720 | dev->idlecount = 0; | |
d83d213d SA |
721 | schedule_work(&dev->work); |
722 | /* Don't resubmit urb here, wait for reinit */ | |
723 | return; | |
724 | } | |
725 | } else | |
726 | dev->idlecount = 0; | |
f7214ff4 | 727 | |
7dce869f | 728 | exit: |
f7214ff4 | 729 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); |
7dce869f | 730 | if (retval) |
2d744b09 | 731 | dev_err(&dev->intf->dev, |
9c113dc6 GKH |
732 | "atp_complete: usb_submit_urb failed with result %d\n", |
733 | retval); | |
f7214ff4 SP |
734 | } |
735 | ||
736 | static int atp_open(struct input_dev *input) | |
737 | { | |
7791bdae | 738 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
739 | |
740 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
741 | return -EIO; | |
742 | ||
743 | dev->open = 1; | |
744 | return 0; | |
745 | } | |
746 | ||
747 | static void atp_close(struct input_dev *input) | |
748 | { | |
7791bdae | 749 | struct atp *dev = input_get_drvdata(input); |
f7214ff4 SP |
750 | |
751 | usb_kill_urb(dev->urb); | |
5a6eb676 | 752 | cancel_work_sync(&dev->work); |
f7214ff4 SP |
753 | dev->open = 0; |
754 | } | |
755 | ||
90d95ef6 ON |
756 | static int atp_handle_geyser(struct atp *dev) |
757 | { | |
09779678 | 758 | if (dev->info != &fountain_info) { |
90d95ef6 | 759 | /* switch to raw sensor mode */ |
80f8594f | 760 | if (atp_geyser_init(dev)) |
90d95ef6 ON |
761 | return -EIO; |
762 | ||
2d744b09 | 763 | dev_info(&dev->intf->dev, "Geyser mode initialized.\n"); |
90d95ef6 ON |
764 | } |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
7dce869f JB |
769 | static int atp_probe(struct usb_interface *iface, |
770 | const struct usb_device_id *id) | |
f7214ff4 | 771 | { |
c5b7c7c3 DT |
772 | struct atp *dev; |
773 | struct input_dev *input_dev; | |
774 | struct usb_device *udev = interface_to_usbdev(iface); | |
f7214ff4 SP |
775 | struct usb_host_interface *iface_desc; |
776 | struct usb_endpoint_descriptor *endpoint; | |
777 | int int_in_endpointAddr = 0; | |
5014186d | 778 | int i, error = -ENOMEM; |
09779678 | 779 | const struct atp_info *info = (const struct atp_info *)id->driver_info; |
f7214ff4 SP |
780 | |
781 | /* set up the endpoint information */ | |
782 | /* use only the first interrupt-in endpoint */ | |
783 | iface_desc = iface->cur_altsetting; | |
784 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { | |
785 | endpoint = &iface_desc->endpoint[i].desc; | |
97b107ca | 786 | if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { |
f7214ff4 SP |
787 | /* we found an interrupt in endpoint */ |
788 | int_in_endpointAddr = endpoint->bEndpointAddress; | |
789 | break; | |
790 | } | |
791 | } | |
792 | if (!int_in_endpointAddr) { | |
9c113dc6 | 793 | dev_err(&iface->dev, "Could not find int-in endpoint\n"); |
c5b7c7c3 | 794 | return -EIO; |
f7214ff4 SP |
795 | } |
796 | ||
c5b7c7c3 DT |
797 | /* allocate memory for our device state and initialize it */ |
798 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); | |
799 | input_dev = input_allocate_device(); | |
800 | if (!dev || !input_dev) { | |
9c113dc6 | 801 | dev_err(&iface->dev, "Out of memory\n"); |
c5b7c7c3 DT |
802 | goto err_free_devs; |
803 | } | |
804 | ||
805 | dev->udev = udev; | |
2d744b09 | 806 | dev->intf = iface; |
c5b7c7c3 | 807 | dev->input = input_dev; |
09779678 | 808 | dev->info = info; |
7dce869f | 809 | dev->overflow_warned = false; |
9effa978 | 810 | |
f7214ff4 | 811 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); |
5014186d | 812 | if (!dev->urb) |
c5b7c7c3 | 813 | goto err_free_devs; |
c5b7c7c3 | 814 | |
997ea58e DM |
815 | dev->data = usb_alloc_coherent(dev->udev, dev->info->datalen, GFP_KERNEL, |
816 | &dev->urb->transfer_dma); | |
5014186d | 817 | if (!dev->data) |
c5b7c7c3 | 818 | goto err_free_urb; |
c5b7c7c3 | 819 | |
09779678 SP |
820 | usb_fill_int_urb(dev->urb, udev, |
821 | usb_rcvintpipe(udev, int_in_endpointAddr), | |
822 | dev->data, dev->info->datalen, | |
823 | dev->info->callback, dev, 1); | |
f7214ff4 | 824 | |
90d95ef6 ON |
825 | error = atp_handle_geyser(dev); |
826 | if (error) | |
827 | goto err_free_buffer; | |
828 | ||
c5b7c7c3 DT |
829 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
830 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
831 | ||
832 | input_dev->name = "appletouch"; | |
833 | input_dev->phys = dev->phys; | |
834 | usb_to_input_id(dev->udev, &input_dev->id); | |
c0f82d57 | 835 | input_dev->dev.parent = &iface->dev; |
f7214ff4 | 836 | |
7791bdae DT |
837 | input_set_drvdata(input_dev, dev); |
838 | ||
c5b7c7c3 DT |
839 | input_dev->open = atp_open; |
840 | input_dev->close = atp_close; | |
f7214ff4 | 841 | |
c5b7c7c3 | 842 | set_bit(EV_ABS, input_dev->evbit); |
f7214ff4 | 843 | |
09779678 SP |
844 | input_set_abs_params(input_dev, ABS_X, 0, |
845 | (dev->info->xsensors - 1) * dev->info->xfact - 1, | |
846 | ATP_FUZZ, 0); | |
847 | input_set_abs_params(input_dev, ABS_Y, 0, | |
848 | (dev->info->ysensors - 1) * dev->info->yfact - 1, | |
849 | ATP_FUZZ, 0); | |
c5b7c7c3 | 850 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
f7214ff4 | 851 | |
c5b7c7c3 DT |
852 | set_bit(EV_KEY, input_dev->evbit); |
853 | set_bit(BTN_TOUCH, input_dev->keybit); | |
854 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
855 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
856 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
857 | set_bit(BTN_LEFT, input_dev->keybit); | |
f7214ff4 | 858 | |
5014186d DT |
859 | error = input_register_device(dev->input); |
860 | if (error) | |
861 | goto err_free_buffer; | |
f7214ff4 | 862 | |
c5b7c7c3 DT |
863 | /* save our data pointer in this interface device */ |
864 | usb_set_intfdata(iface, dev); | |
f7214ff4 | 865 | |
5a6eb676 SS |
866 | INIT_WORK(&dev->work, atp_reinit); |
867 | ||
f7214ff4 SP |
868 | return 0; |
869 | ||
5014186d | 870 | err_free_buffer: |
997ea58e DM |
871 | usb_free_coherent(dev->udev, dev->info->datalen, |
872 | dev->data, dev->urb->transfer_dma); | |
c5b7c7c3 | 873 | err_free_urb: |
f7214ff4 | 874 | usb_free_urb(dev->urb); |
c5b7c7c3 | 875 | err_free_devs: |
f7214ff4 | 876 | usb_set_intfdata(iface, NULL); |
f7214ff4 | 877 | kfree(dev); |
c5b7c7c3 | 878 | input_free_device(input_dev); |
5014186d | 879 | return error; |
f7214ff4 SP |
880 | } |
881 | ||
882 | static void atp_disconnect(struct usb_interface *iface) | |
883 | { | |
884 | struct atp *dev = usb_get_intfdata(iface); | |
885 | ||
886 | usb_set_intfdata(iface, NULL); | |
887 | if (dev) { | |
888 | usb_kill_urb(dev->urb); | |
c5b7c7c3 | 889 | input_unregister_device(dev->input); |
997ea58e DM |
890 | usb_free_coherent(dev->udev, dev->info->datalen, |
891 | dev->data, dev->urb->transfer_dma); | |
7af569ab | 892 | usb_free_urb(dev->urb); |
f7214ff4 SP |
893 | kfree(dev); |
894 | } | |
2d744b09 | 895 | dev_info(&iface->dev, "input: appletouch disconnected\n"); |
f7214ff4 SP |
896 | } |
897 | ||
90d95ef6 ON |
898 | static int atp_recover(struct atp *dev) |
899 | { | |
900 | int error; | |
901 | ||
902 | error = atp_handle_geyser(dev); | |
903 | if (error) | |
904 | return error; | |
905 | ||
906 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) | |
907 | return -EIO; | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
f7214ff4 SP |
912 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) |
913 | { | |
914 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 915 | |
f7214ff4 | 916 | usb_kill_urb(dev->urb); |
f7214ff4 SP |
917 | return 0; |
918 | } | |
919 | ||
920 | static int atp_resume(struct usb_interface *iface) | |
921 | { | |
922 | struct atp *dev = usb_get_intfdata(iface); | |
5a6eb676 | 923 | |
f7214ff4 SP |
924 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
925 | return -EIO; | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
90d95ef6 ON |
930 | static int atp_reset_resume(struct usb_interface *iface) |
931 | { | |
932 | struct atp *dev = usb_get_intfdata(iface); | |
933 | ||
934 | return atp_recover(dev); | |
935 | } | |
936 | ||
f7214ff4 | 937 | static struct usb_driver atp_driver = { |
f7214ff4 SP |
938 | .name = "appletouch", |
939 | .probe = atp_probe, | |
940 | .disconnect = atp_disconnect, | |
941 | .suspend = atp_suspend, | |
942 | .resume = atp_resume, | |
90d95ef6 | 943 | .reset_resume = atp_reset_resume, |
f7214ff4 SP |
944 | .id_table = atp_table, |
945 | }; | |
946 | ||
08642e7c | 947 | module_usb_driver(atp_driver); |