Commit | Line | Data |
---|---|---|
f89bd95c HR |
1 | /* |
2 | * Apple USB BCM5974 (Macbook Air and Penryn Macbook Pro) multitouch driver | |
3 | * | |
4 | * Copyright (C) 2008 Henrik Rydberg (rydberg@euromail.se) | |
5 | * | |
6 | * The USB initialization and package decoding was made by | |
7 | * Scott Shawcroft as part of the touchd user-space driver project: | |
8 | * Copyright (C) 2008 Scott Shawcroft (scott.shawcroft@gmail.com) | |
9 | * | |
10 | * The BCM5974 driver is based on the appletouch driver: | |
11 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) | |
12 | * Copyright (C) 2005 Johannes Berg (johannes@sipsolutions.net) | |
13 | * Copyright (C) 2005 Stelian Pop (stelian@popies.net) | |
14 | * Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de) | |
15 | * Copyright (C) 2005 Peter Osterlund (petero2@telia.com) | |
16 | * Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch) | |
17 | * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch) | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be useful, | |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License | |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
32 | * | |
33 | */ | |
34 | ||
35 | #include <linux/kernel.h> | |
36 | #include <linux/errno.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/usb/input.h> | |
41 | #include <linux/hid.h> | |
42 | #include <linux/mutex.h> | |
43 | ||
44 | #define USB_VENDOR_ID_APPLE 0x05ac | |
45 | ||
46 | /* MacbookAir, aka wellspring */ | |
47 | #define USB_DEVICE_ID_APPLE_WELLSPRING_ANSI 0x0223 | |
48 | #define USB_DEVICE_ID_APPLE_WELLSPRING_ISO 0x0224 | |
49 | #define USB_DEVICE_ID_APPLE_WELLSPRING_JIS 0x0225 | |
50 | /* MacbookProPenryn, aka wellspring2 */ | |
51 | #define USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI 0x0230 | |
52 | #define USB_DEVICE_ID_APPLE_WELLSPRING2_ISO 0x0231 | |
53 | #define USB_DEVICE_ID_APPLE_WELLSPRING2_JIS 0x0232 | |
54 | ||
55 | #define BCM5974_DEVICE(prod) { \ | |
56 | .match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \ | |
57 | USB_DEVICE_ID_MATCH_INT_CLASS | \ | |
58 | USB_DEVICE_ID_MATCH_INT_PROTOCOL), \ | |
59 | .idVendor = USB_VENDOR_ID_APPLE, \ | |
60 | .idProduct = (prod), \ | |
61 | .bInterfaceClass = USB_INTERFACE_CLASS_HID, \ | |
62 | .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE \ | |
63 | } | |
64 | ||
65 | /* table of devices that work with this driver */ | |
66 | static const struct usb_device_id bcm5974_table [] = { | |
67 | /* MacbookAir1.1 */ | |
68 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ANSI), | |
69 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ISO), | |
70 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_JIS), | |
71 | /* MacbookProPenryn */ | |
72 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI), | |
73 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ISO), | |
74 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_JIS), | |
75 | /* Terminating entry */ | |
76 | {} | |
77 | }; | |
78 | MODULE_DEVICE_TABLE(usb, bcm5974_table); | |
79 | ||
80 | MODULE_AUTHOR("Henrik Rydberg"); | |
81 | MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver"); | |
82 | MODULE_LICENSE("GPL"); | |
83 | ||
84 | #define dprintk(level, format, a...)\ | |
85 | { if (debug >= level) printk(KERN_DEBUG format, ##a); } | |
86 | ||
87 | static int debug = 1; | |
88 | module_param(debug, int, 0644); | |
89 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
90 | ||
91 | /* button data structure */ | |
92 | struct bt_data { | |
93 | u8 unknown1; /* constant */ | |
94 | u8 button; /* left button */ | |
95 | u8 rel_x; /* relative x coordinate */ | |
96 | u8 rel_y; /* relative y coordinate */ | |
97 | }; | |
98 | ||
99 | /* trackpad header structure */ | |
100 | struct tp_header { | |
101 | u8 unknown1[16]; /* constants, timers, etc */ | |
102 | u8 fingers; /* number of fingers on trackpad */ | |
103 | u8 unknown2[9]; /* constants, timers, etc */ | |
104 | }; | |
105 | ||
106 | /* trackpad finger structure */ | |
107 | struct tp_finger { | |
108 | __le16 origin; /* left/right origin? */ | |
109 | __le16 abs_x; /* absolute x coodinate */ | |
110 | __le16 abs_y; /* absolute y coodinate */ | |
111 | __le16 rel_x; /* relative x coodinate */ | |
112 | __le16 rel_y; /* relative y coodinate */ | |
113 | __le16 size_major; /* finger size, major axis? */ | |
114 | __le16 size_minor; /* finger size, minor axis? */ | |
115 | __le16 orientation; /* 16384 when point, else 15 bit angle */ | |
116 | __le16 force_major; /* trackpad force, major axis? */ | |
117 | __le16 force_minor; /* trackpad force, minor axis? */ | |
118 | __le16 unused[3]; /* zeros */ | |
119 | __le16 multi; /* one finger: varies, more fingers: constant */ | |
120 | }; | |
121 | ||
122 | /* trackpad data structure, empirically at least ten fingers */ | |
123 | struct tp_data { | |
124 | struct tp_header header; | |
125 | struct tp_finger finger[16]; | |
126 | }; | |
127 | ||
128 | /* device-specific parameters */ | |
129 | struct bcm5974_param { | |
130 | int dim; /* logical dimension */ | |
131 | int fuzz; /* logical noise value */ | |
132 | int devmin; /* device minimum reading */ | |
133 | int devmax; /* device maximum reading */ | |
134 | }; | |
135 | ||
136 | /* device-specific configuration */ | |
137 | struct bcm5974_config { | |
138 | int ansi, iso, jis; /* the product id of this device */ | |
139 | int bt_ep; /* the endpoint of the button interface */ | |
140 | int bt_datalen; /* data length of the button interface */ | |
141 | int tp_ep; /* the endpoint of the trackpad interface */ | |
142 | int tp_datalen; /* data length of the trackpad interface */ | |
143 | struct bcm5974_param p; /* finger pressure limits */ | |
144 | struct bcm5974_param w; /* finger width limits */ | |
145 | struct bcm5974_param x; /* horizontal limits */ | |
146 | struct bcm5974_param y; /* vertical limits */ | |
147 | }; | |
148 | ||
149 | /* logical device structure */ | |
150 | struct bcm5974 { | |
151 | char phys[64]; | |
152 | struct usb_device *udev; /* usb device */ | |
153 | struct input_dev *input; /* input dev */ | |
154 | struct bcm5974_config cfg; /* device configuration */ | |
155 | struct mutex pm_mutex; /* serialize access to open/suspend */ | |
156 | int opened; /* 1: opened, 0: closed */ | |
157 | struct urb *bt_urb; /* button usb request block */ | |
158 | struct bt_data *bt_data; /* button transferred data */ | |
159 | struct urb *tp_urb; /* trackpad usb request block */ | |
160 | struct tp_data *tp_data; /* trackpad transferred data */ | |
161 | }; | |
162 | ||
163 | /* logical dimensions */ | |
164 | #define DIM_PRESSURE 256 /* maximum finger pressure */ | |
165 | #define DIM_WIDTH 16 /* maximum finger width */ | |
166 | #define DIM_X 1280 /* maximum trackpad x value */ | |
167 | #define DIM_Y 800 /* maximum trackpad y value */ | |
168 | ||
169 | /* logical signal quality */ | |
170 | #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ | |
171 | #define SN_WIDTH 100 /* width signal-to-noise ratio */ | |
172 | #define SN_COORD 250 /* coordinate signal-to-noise ratio */ | |
173 | ||
174 | /* device constants */ | |
175 | static const struct bcm5974_config bcm5974_config_table[] = { | |
176 | { | |
177 | USB_DEVICE_ID_APPLE_WELLSPRING_ANSI, | |
178 | USB_DEVICE_ID_APPLE_WELLSPRING_ISO, | |
179 | USB_DEVICE_ID_APPLE_WELLSPRING_JIS, | |
180 | 0x84, sizeof(struct bt_data), | |
181 | 0x81, sizeof(struct tp_data), | |
182 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, | |
183 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
184 | { DIM_X, DIM_X / SN_COORD, -4824, 5342 }, | |
185 | { DIM_Y, DIM_Y / SN_COORD, -172, 5820 } | |
186 | }, | |
187 | { | |
188 | USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI, | |
189 | USB_DEVICE_ID_APPLE_WELLSPRING2_ISO, | |
190 | USB_DEVICE_ID_APPLE_WELLSPRING2_JIS, | |
191 | 0x84, sizeof(struct bt_data), | |
192 | 0x81, sizeof(struct tp_data), | |
193 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, | |
194 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
195 | { DIM_X, DIM_X / SN_COORD, -4824, 4824 }, | |
196 | { DIM_Y, DIM_Y / SN_COORD, -172, 4290 } | |
197 | }, | |
198 | {} | |
199 | }; | |
200 | ||
201 | /* return the device-specific configuration by device */ | |
202 | static const struct bcm5974_config *bcm5974_get_config(struct usb_device *udev) | |
203 | { | |
204 | u16 id = le16_to_cpu(udev->descriptor.idProduct); | |
205 | const struct bcm5974_config *cfg; | |
206 | ||
207 | for (cfg = bcm5974_config_table; cfg->ansi; ++cfg) | |
208 | if (cfg->ansi == id || cfg->iso == id || cfg->jis == id) | |
209 | return cfg; | |
210 | ||
211 | return bcm5974_config_table; | |
212 | } | |
213 | ||
214 | /* convert 16-bit little endian to signed integer */ | |
215 | static inline int raw2int(__le16 x) | |
216 | { | |
217 | return (signed short)le16_to_cpu(x); | |
218 | } | |
219 | ||
220 | /* scale device data to logical dimensions (asserts devmin < devmax) */ | |
221 | static inline int int2scale(const struct bcm5974_param *p, int x) | |
222 | { | |
223 | return x * p->dim / (p->devmax - p->devmin); | |
224 | } | |
225 | ||
226 | /* all logical value ranges are [0,dim). */ | |
227 | static inline int int2bound(const struct bcm5974_param *p, int x) | |
228 | { | |
229 | int s = int2scale(p, x); | |
230 | ||
231 | return clamp_val(s, 0, p->dim - 1); | |
232 | } | |
233 | ||
234 | /* setup which logical events to report */ | |
235 | static void setup_events_to_report(struct input_dev *input_dev, | |
236 | const struct bcm5974_config *cfg) | |
237 | { | |
238 | __set_bit(EV_ABS, input_dev->evbit); | |
239 | ||
240 | input_set_abs_params(input_dev, ABS_PRESSURE, | |
241 | 0, cfg->p.dim, cfg->p.fuzz, 0); | |
242 | input_set_abs_params(input_dev, ABS_TOOL_WIDTH, | |
243 | 0, cfg->w.dim, cfg->w.fuzz, 0); | |
244 | input_set_abs_params(input_dev, ABS_X, | |
245 | 0, cfg->x.dim, cfg->x.fuzz, 0); | |
246 | input_set_abs_params(input_dev, ABS_Y, | |
247 | 0, cfg->y.dim, cfg->y.fuzz, 0); | |
248 | ||
249 | __set_bit(EV_KEY, input_dev->evbit); | |
250 | __set_bit(BTN_TOOL_FINGER, input_dev->keybit); | |
251 | __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
252 | __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
253 | __set_bit(BTN_LEFT, input_dev->keybit); | |
254 | } | |
255 | ||
256 | /* report button data as logical button state */ | |
257 | static int report_bt_state(struct bcm5974 *dev, int size) | |
258 | { | |
259 | if (size != sizeof(struct bt_data)) | |
260 | return -EIO; | |
261 | ||
262 | input_report_key(dev->input, BTN_LEFT, dev->bt_data->button); | |
263 | input_sync(dev->input); | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | /* report trackpad data as logical trackpad state */ | |
269 | static int report_tp_state(struct bcm5974 *dev, int size) | |
270 | { | |
271 | const struct bcm5974_config *c = &dev->cfg; | |
272 | const struct tp_finger *f = dev->tp_data->finger; | |
273 | struct input_dev *input = dev->input; | |
274 | const int fingers = (size - 26) / 28; | |
275 | int p = 0, w, x, y, n = 0; | |
276 | ||
277 | if (size < 26 || (size - 26) % 28 != 0) | |
278 | return -EIO; | |
279 | ||
280 | if (fingers) { | |
281 | p = raw2int(f->force_major); | |
282 | w = raw2int(f->size_major); | |
283 | x = raw2int(f->abs_x); | |
284 | y = raw2int(f->abs_y); | |
285 | n = p > 0 ? fingers : 0; | |
286 | ||
287 | dprintk(9, | |
288 | "bcm5974: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n", | |
289 | p, w, x, y, n); | |
290 | ||
291 | input_report_abs(input, ABS_TOOL_WIDTH, int2bound(&c->w, w)); | |
292 | input_report_abs(input, ABS_X, int2bound(&c->x, x - c->x.devmin)); | |
293 | input_report_abs(input, ABS_Y, int2bound(&c->y, c->y.devmax - y)); | |
294 | } | |
295 | ||
296 | input_report_abs(input, ABS_PRESSURE, int2bound(&c->p, p)); | |
297 | ||
298 | input_report_key(input, BTN_TOOL_FINGER, n == 1); | |
299 | input_report_key(input, BTN_TOOL_DOUBLETAP, n == 2); | |
300 | input_report_key(input, BTN_TOOL_TRIPLETAP, n > 2); | |
301 | ||
302 | input_sync(input); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
307 | /* Wellspring initialization constants */ | |
308 | #define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID 1 | |
309 | #define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID 9 | |
310 | #define BCM5974_WELLSPRING_MODE_REQUEST_VALUE 0x300 | |
311 | #define BCM5974_WELLSPRING_MODE_REQUEST_INDEX 0 | |
312 | #define BCM5974_WELLSPRING_MODE_VENDOR_VALUE 0x01 | |
313 | ||
314 | static int bcm5974_wellspring_mode(struct bcm5974 *dev) | |
315 | { | |
316 | char *data = kmalloc(8, GFP_KERNEL); | |
317 | int retval = 0, size; | |
318 | ||
319 | if (!data) { | |
320 | err("bcm5974: out of memory"); | |
321 | retval = -ENOMEM; | |
322 | goto out; | |
323 | } | |
324 | ||
325 | /* read configuration */ | |
326 | size = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
327 | BCM5974_WELLSPRING_MODE_READ_REQUEST_ID, | |
328 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
329 | BCM5974_WELLSPRING_MODE_REQUEST_VALUE, | |
330 | BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000); | |
331 | ||
332 | if (size != 8) { | |
333 | err("bcm5974: could not read from device"); | |
334 | retval = -EIO; | |
335 | goto out; | |
336 | } | |
337 | ||
338 | /* apply the mode switch */ | |
339 | data[0] = BCM5974_WELLSPRING_MODE_VENDOR_VALUE; | |
340 | ||
341 | /* write configuration */ | |
342 | size = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
343 | BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID, | |
344 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
345 | BCM5974_WELLSPRING_MODE_REQUEST_VALUE, | |
346 | BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000); | |
347 | ||
348 | if (size != 8) { | |
349 | err("bcm5974: could not write to device"); | |
350 | retval = -EIO; | |
351 | goto out; | |
352 | } | |
353 | ||
354 | dprintk(2, "bcm5974: switched to wellspring mode.\n"); | |
355 | ||
356 | out: | |
357 | kfree(data); | |
358 | return retval; | |
359 | } | |
360 | ||
361 | static void bcm5974_irq_button(struct urb *urb) | |
362 | { | |
363 | struct bcm5974 *dev = urb->context; | |
364 | int error; | |
365 | ||
366 | switch (urb->status) { | |
367 | case 0: | |
368 | break; | |
369 | case -EOVERFLOW: | |
370 | case -ECONNRESET: | |
371 | case -ENOENT: | |
372 | case -ESHUTDOWN: | |
373 | dbg("bcm5974: button urb shutting down: %d", urb->status); | |
374 | return; | |
375 | default: | |
376 | dbg("bcm5974: button urb status: %d", urb->status); | |
377 | goto exit; | |
378 | } | |
379 | ||
380 | if (report_bt_state(dev, dev->bt_urb->actual_length)) | |
381 | dprintk(1, "bcm5974: bad button package, length: %d\n", | |
382 | dev->bt_urb->actual_length); | |
383 | ||
384 | exit: | |
385 | error = usb_submit_urb(dev->bt_urb, GFP_ATOMIC); | |
386 | if (error) | |
387 | err("bcm5974: button urb failed: %d", error); | |
388 | } | |
389 | ||
390 | static void bcm5974_irq_trackpad(struct urb *urb) | |
391 | { | |
392 | struct bcm5974 *dev = urb->context; | |
393 | int error; | |
394 | ||
395 | switch (urb->status) { | |
396 | case 0: | |
397 | break; | |
398 | case -EOVERFLOW: | |
399 | case -ECONNRESET: | |
400 | case -ENOENT: | |
401 | case -ESHUTDOWN: | |
402 | dbg("bcm5974: trackpad urb shutting down: %d", urb->status); | |
403 | return; | |
404 | default: | |
405 | dbg("bcm5974: trackpad urb status: %d", urb->status); | |
406 | goto exit; | |
407 | } | |
408 | ||
409 | /* control response ignored */ | |
410 | if (dev->tp_urb->actual_length == 2) | |
411 | goto exit; | |
412 | ||
413 | if (report_tp_state(dev, dev->tp_urb->actual_length)) | |
414 | dprintk(1, "bcm5974: bad trackpad package, length: %d\n", | |
415 | dev->tp_urb->actual_length); | |
416 | ||
417 | exit: | |
418 | error = usb_submit_urb(dev->tp_urb, GFP_ATOMIC); | |
419 | if (error) | |
420 | err("bcm5974: trackpad urb failed: %d", error); | |
421 | } | |
422 | ||
423 | /* | |
424 | * The Wellspring trackpad, like many recent Apple trackpads, share | |
425 | * the usb device with the keyboard. Since keyboards are usually | |
426 | * handled by the HID system, the device ends up being handled by two | |
427 | * modules. Setting up the device therefore becomes slightly | |
428 | * complicated. To enable multitouch features, a mode switch is | |
429 | * required, which is usually applied via the control interface of the | |
430 | * device. It can be argued where this switch should take place. In | |
431 | * some drivers, like appletouch, the switch is made during | |
432 | * probe. However, the hid module may also alter the state of the | |
433 | * device, resulting in trackpad malfunction under certain | |
434 | * circumstances. To get around this problem, there is at least one | |
435 | * example that utilizes the USB_QUIRK_RESET_RESUME quirk in order to | |
436 | * recieve a reset_resume request rather than the normal resume. | |
437 | * Since the implementation of reset_resume is equal to mode switch | |
438 | * plus start_traffic, it seems easier to always do the switch when | |
439 | * starting traffic on the device. | |
440 | */ | |
441 | static int bcm5974_start_traffic(struct bcm5974 *dev) | |
442 | { | |
443 | if (bcm5974_wellspring_mode(dev)) { | |
444 | dprintk(1, "bcm5974: mode switch failed\n"); | |
445 | goto error; | |
446 | } | |
447 | ||
448 | if (usb_submit_urb(dev->bt_urb, GFP_KERNEL)) | |
449 | goto error; | |
450 | ||
451 | if (usb_submit_urb(dev->tp_urb, GFP_KERNEL)) | |
452 | goto err_kill_bt; | |
453 | ||
454 | return 0; | |
455 | ||
456 | err_kill_bt: | |
457 | usb_kill_urb(dev->bt_urb); | |
458 | error: | |
459 | return -EIO; | |
460 | } | |
461 | ||
462 | static void bcm5974_pause_traffic(struct bcm5974 *dev) | |
463 | { | |
464 | usb_kill_urb(dev->tp_urb); | |
465 | usb_kill_urb(dev->bt_urb); | |
466 | } | |
467 | ||
468 | /* | |
469 | * The code below implements open/close and manual suspend/resume. | |
470 | * All functions may be called in random order. | |
471 | * | |
472 | * Opening a suspended device fails with EACCES - permission denied. | |
473 | * | |
474 | * Failing a resume leaves the device resumed but closed. | |
475 | */ | |
476 | static int bcm5974_open(struct input_dev *input) | |
477 | { | |
478 | struct bcm5974 *dev = input_get_drvdata(input); | |
479 | int error; | |
480 | ||
481 | mutex_lock(&dev->pm_mutex); | |
482 | ||
483 | error = bcm5974_start_traffic(dev); | |
484 | if (!error) | |
485 | dev->opened = 1; | |
486 | ||
487 | mutex_unlock(&dev->pm_mutex); | |
488 | ||
489 | return error; | |
490 | } | |
491 | ||
492 | static void bcm5974_close(struct input_dev *input) | |
493 | { | |
494 | struct bcm5974 *dev = input_get_drvdata(input); | |
495 | ||
496 | mutex_lock(&dev->pm_mutex); | |
497 | ||
498 | bcm5974_pause_traffic(dev); | |
499 | dev->opened = 0; | |
500 | ||
501 | mutex_unlock(&dev->pm_mutex); | |
502 | } | |
503 | ||
504 | static int bcm5974_suspend(struct usb_interface *iface, pm_message_t message) | |
505 | { | |
506 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
507 | ||
508 | mutex_lock(&dev->pm_mutex); | |
509 | ||
510 | if (dev->opened) | |
511 | bcm5974_pause_traffic(dev); | |
512 | ||
513 | mutex_unlock(&dev->pm_mutex); | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | static int bcm5974_resume(struct usb_interface *iface) | |
519 | { | |
520 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
521 | int error = 0; | |
522 | ||
523 | mutex_lock(&dev->pm_mutex); | |
524 | ||
525 | if (dev->opened) | |
526 | error = bcm5974_start_traffic(dev); | |
527 | ||
528 | mutex_unlock(&dev->pm_mutex); | |
529 | ||
530 | return error; | |
531 | } | |
532 | ||
533 | static int bcm5974_probe(struct usb_interface *iface, | |
534 | const struct usb_device_id *id) | |
535 | { | |
536 | struct usb_device *udev = interface_to_usbdev(iface); | |
537 | const struct bcm5974_config *cfg; | |
538 | struct bcm5974 *dev; | |
539 | struct input_dev *input_dev; | |
540 | int error = -ENOMEM; | |
541 | ||
542 | /* find the product index */ | |
543 | cfg = bcm5974_get_config(udev); | |
544 | ||
545 | /* allocate memory for our device state and initialize it */ | |
546 | dev = kzalloc(sizeof(struct bcm5974), GFP_KERNEL); | |
547 | input_dev = input_allocate_device(); | |
548 | if (!dev || !input_dev) { | |
549 | err("bcm5974: out of memory"); | |
550 | goto err_free_devs; | |
551 | } | |
552 | ||
553 | dev->udev = udev; | |
554 | dev->input = input_dev; | |
555 | dev->cfg = *cfg; | |
556 | mutex_init(&dev->pm_mutex); | |
557 | ||
558 | /* setup urbs */ | |
559 | dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL); | |
560 | if (!dev->bt_urb) | |
561 | goto err_free_devs; | |
562 | ||
563 | dev->tp_urb = usb_alloc_urb(0, GFP_KERNEL); | |
564 | if (!dev->tp_urb) | |
565 | goto err_free_bt_urb; | |
566 | ||
567 | dev->bt_data = usb_buffer_alloc(dev->udev, | |
568 | dev->cfg.bt_datalen, GFP_KERNEL, | |
569 | &dev->bt_urb->transfer_dma); | |
570 | if (!dev->bt_data) | |
571 | goto err_free_urb; | |
572 | ||
573 | dev->tp_data = usb_buffer_alloc(dev->udev, | |
574 | dev->cfg.tp_datalen, GFP_KERNEL, | |
575 | &dev->tp_urb->transfer_dma); | |
576 | if (!dev->tp_data) | |
577 | goto err_free_bt_buffer; | |
578 | ||
579 | usb_fill_int_urb(dev->bt_urb, udev, | |
580 | usb_rcvintpipe(udev, cfg->bt_ep), | |
581 | dev->bt_data, dev->cfg.bt_datalen, | |
582 | bcm5974_irq_button, dev, 1); | |
583 | ||
584 | usb_fill_int_urb(dev->tp_urb, udev, | |
585 | usb_rcvintpipe(udev, cfg->tp_ep), | |
586 | dev->tp_data, dev->cfg.tp_datalen, | |
587 | bcm5974_irq_trackpad, dev, 1); | |
588 | ||
589 | /* create bcm5974 device */ | |
590 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); | |
591 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
592 | ||
593 | input_dev->name = "bcm5974"; | |
594 | input_dev->phys = dev->phys; | |
595 | usb_to_input_id(dev->udev, &input_dev->id); | |
596 | input_dev->dev.parent = &iface->dev; | |
597 | ||
598 | input_set_drvdata(input_dev, dev); | |
599 | ||
600 | input_dev->open = bcm5974_open; | |
601 | input_dev->close = bcm5974_close; | |
602 | ||
603 | setup_events_to_report(input_dev, cfg); | |
604 | ||
605 | error = input_register_device(dev->input); | |
606 | if (error) | |
607 | goto err_free_buffer; | |
608 | ||
609 | /* save our data pointer in this interface device */ | |
610 | usb_set_intfdata(iface, dev); | |
611 | ||
612 | return 0; | |
613 | ||
614 | err_free_buffer: | |
615 | usb_buffer_free(dev->udev, dev->cfg.tp_datalen, | |
616 | dev->tp_data, dev->tp_urb->transfer_dma); | |
617 | err_free_bt_buffer: | |
618 | usb_buffer_free(dev->udev, dev->cfg.bt_datalen, | |
619 | dev->bt_data, dev->bt_urb->transfer_dma); | |
620 | err_free_urb: | |
621 | usb_free_urb(dev->tp_urb); | |
622 | err_free_bt_urb: | |
623 | usb_free_urb(dev->bt_urb); | |
624 | err_free_devs: | |
625 | usb_set_intfdata(iface, NULL); | |
626 | input_free_device(input_dev); | |
627 | kfree(dev); | |
628 | return error; | |
629 | } | |
630 | ||
631 | static void bcm5974_disconnect(struct usb_interface *iface) | |
632 | { | |
633 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
634 | ||
635 | usb_set_intfdata(iface, NULL); | |
636 | ||
637 | input_unregister_device(dev->input); | |
638 | usb_buffer_free(dev->udev, dev->cfg.tp_datalen, | |
639 | dev->tp_data, dev->tp_urb->transfer_dma); | |
640 | usb_buffer_free(dev->udev, dev->cfg.bt_datalen, | |
641 | dev->bt_data, dev->bt_urb->transfer_dma); | |
642 | usb_free_urb(dev->tp_urb); | |
643 | usb_free_urb(dev->bt_urb); | |
644 | kfree(dev); | |
645 | } | |
646 | ||
647 | static struct usb_driver bcm5974_driver = { | |
648 | .name = "bcm5974", | |
649 | .probe = bcm5974_probe, | |
650 | .disconnect = bcm5974_disconnect, | |
651 | .suspend = bcm5974_suspend, | |
652 | .resume = bcm5974_resume, | |
653 | .reset_resume = bcm5974_resume, | |
654 | .id_table = bcm5974_table, | |
655 | }; | |
656 | ||
657 | static int __init bcm5974_init(void) | |
658 | { | |
659 | return usb_register(&bcm5974_driver); | |
660 | } | |
661 | ||
662 | static void __exit bcm5974_exit(void) | |
663 | { | |
664 | usb_deregister(&bcm5974_driver); | |
665 | } | |
666 | ||
667 | module_init(bcm5974_init); | |
668 | module_exit(bcm5974_exit); | |
669 |