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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 | |
158e9287 HR |
54 | /* Macbook5,1 (unibody), aka wellspring3 */ |
55 | #define USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI 0x0236 | |
56 | #define USB_DEVICE_ID_APPLE_WELLSPRING3_ISO 0x0237 | |
57 | #define USB_DEVICE_ID_APPLE_WELLSPRING3_JIS 0x0238 | |
6021afcf EH |
58 | /* MacbookAir3,2 (unibody), aka wellspring5 */ |
59 | #define USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI 0x023f | |
60 | #define USB_DEVICE_ID_APPLE_WELLSPRING4_ISO 0x0240 | |
61 | #define USB_DEVICE_ID_APPLE_WELLSPRING4_JIS 0x0241 | |
62 | /* MacbookAir3,1 (unibody), aka wellspring4 */ | |
63 | #define USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI 0x0242 | |
64 | #define USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO 0x0243 | |
65 | #define USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS 0x0244 | |
47340bd9 AB |
66 | /* Macbook8 (unibody, March 2011) */ |
67 | #define USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI 0x0245 | |
68 | #define USB_DEVICE_ID_APPLE_WELLSPRING5_ISO 0x0246 | |
69 | #define USB_DEVICE_ID_APPLE_WELLSPRING5_JIS 0x0247 | |
1c601bea PAVM |
70 | /* MacbookAir4,1 (unibody, July 2011) */ |
71 | #define USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI 0x0249 | |
72 | #define USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO 0x024a | |
73 | #define USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS 0x024b | |
db0b34b0 JD |
74 | /* MacbookAir4,2 (unibody, July 2011) */ |
75 | #define USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI 0x024c | |
76 | #define USB_DEVICE_ID_APPLE_WELLSPRING6_ISO 0x024d | |
77 | #define USB_DEVICE_ID_APPLE_WELLSPRING6_JIS 0x024e | |
c331eb58 AD |
78 | /* Macbook8,2 (unibody) */ |
79 | #define USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI 0x0252 | |
80 | #define USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO 0x0253 | |
81 | #define USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS 0x0254 | |
f89bd95c HR |
82 | |
83 | #define BCM5974_DEVICE(prod) { \ | |
84 | .match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \ | |
85 | USB_DEVICE_ID_MATCH_INT_CLASS | \ | |
86 | USB_DEVICE_ID_MATCH_INT_PROTOCOL), \ | |
87 | .idVendor = USB_VENDOR_ID_APPLE, \ | |
88 | .idProduct = (prod), \ | |
89 | .bInterfaceClass = USB_INTERFACE_CLASS_HID, \ | |
90 | .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE \ | |
91 | } | |
92 | ||
93 | /* table of devices that work with this driver */ | |
158e0fb6 | 94 | static const struct usb_device_id bcm5974_table[] = { |
f89bd95c HR |
95 | /* MacbookAir1.1 */ |
96 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ANSI), | |
97 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ISO), | |
98 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_JIS), | |
99 | /* MacbookProPenryn */ | |
100 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI), | |
101 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ISO), | |
102 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_JIS), | |
158e9287 HR |
103 | /* Macbook5,1 */ |
104 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI), | |
105 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ISO), | |
106 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_JIS), | |
6021afcf EH |
107 | /* MacbookAir3,2 */ |
108 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI), | |
109 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_ISO), | |
110 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_JIS), | |
111 | /* MacbookAir3,1 */ | |
112 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI), | |
113 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO), | |
114 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS), | |
47340bd9 AB |
115 | /* MacbookPro8 */ |
116 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI), | |
117 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ISO), | |
118 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_JIS), | |
1c601bea PAVM |
119 | /* MacbookAir4,1 */ |
120 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI), | |
121 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO), | |
122 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS), | |
db0b34b0 JD |
123 | /* MacbookAir4,2 */ |
124 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI), | |
125 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ISO), | |
126 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_JIS), | |
c331eb58 AD |
127 | /* MacbookPro8,2 */ |
128 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI), | |
129 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO), | |
130 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS), | |
f89bd95c HR |
131 | /* Terminating entry */ |
132 | {} | |
133 | }; | |
134 | MODULE_DEVICE_TABLE(usb, bcm5974_table); | |
135 | ||
136 | MODULE_AUTHOR("Henrik Rydberg"); | |
137 | MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver"); | |
138 | MODULE_LICENSE("GPL"); | |
139 | ||
140 | #define dprintk(level, format, a...)\ | |
141 | { if (debug >= level) printk(KERN_DEBUG format, ##a); } | |
142 | ||
143 | static int debug = 1; | |
144 | module_param(debug, int, 0644); | |
145 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
146 | ||
147 | /* button data structure */ | |
148 | struct bt_data { | |
149 | u8 unknown1; /* constant */ | |
150 | u8 button; /* left button */ | |
151 | u8 rel_x; /* relative x coordinate */ | |
152 | u8 rel_y; /* relative y coordinate */ | |
153 | }; | |
154 | ||
9894cf0f HR |
155 | /* trackpad header types */ |
156 | enum tp_type { | |
158e9287 HR |
157 | TYPE1, /* plain trackpad */ |
158 | TYPE2 /* button integrated in trackpad */ | |
f89bd95c HR |
159 | }; |
160 | ||
9894cf0f HR |
161 | /* trackpad finger data offsets, le16-aligned */ |
162 | #define FINGER_TYPE1 (13 * sizeof(__le16)) | |
158e9287 HR |
163 | #define FINGER_TYPE2 (15 * sizeof(__le16)) |
164 | ||
165 | /* trackpad button data offsets */ | |
166 | #define BUTTON_TYPE2 15 | |
167 | ||
168 | /* list of device capability bits */ | |
169 | #define HAS_INTEGRATED_BUTTON 1 | |
9894cf0f HR |
170 | |
171 | /* trackpad finger structure, le16-aligned */ | |
f89bd95c | 172 | struct tp_finger { |
75e21e3f | 173 | __le16 origin; /* zero when switching track finger */ |
f89bd95c HR |
174 | __le16 abs_x; /* absolute x coodinate */ |
175 | __le16 abs_y; /* absolute y coodinate */ | |
176 | __le16 rel_x; /* relative x coodinate */ | |
177 | __le16 rel_y; /* relative y coodinate */ | |
178 | __le16 size_major; /* finger size, major axis? */ | |
179 | __le16 size_minor; /* finger size, minor axis? */ | |
180 | __le16 orientation; /* 16384 when point, else 15 bit angle */ | |
181 | __le16 force_major; /* trackpad force, major axis? */ | |
182 | __le16 force_minor; /* trackpad force, minor axis? */ | |
183 | __le16 unused[3]; /* zeros */ | |
184 | __le16 multi; /* one finger: varies, more fingers: constant */ | |
9894cf0f | 185 | } __attribute__((packed,aligned(2))); |
f89bd95c | 186 | |
9894cf0f HR |
187 | /* trackpad finger data size, empirically at least ten fingers */ |
188 | #define SIZEOF_FINGER sizeof(struct tp_finger) | |
189 | #define SIZEOF_ALL_FINGERS (16 * SIZEOF_FINGER) | |
6f2701b7 | 190 | #define MAX_FINGER_ORIENTATION 16384 |
f89bd95c HR |
191 | |
192 | /* device-specific parameters */ | |
193 | struct bcm5974_param { | |
194 | int dim; /* logical dimension */ | |
195 | int fuzz; /* logical noise value */ | |
196 | int devmin; /* device minimum reading */ | |
197 | int devmax; /* device maximum reading */ | |
198 | }; | |
199 | ||
200 | /* device-specific configuration */ | |
201 | struct bcm5974_config { | |
202 | int ansi, iso, jis; /* the product id of this device */ | |
158e9287 | 203 | int caps; /* device capability bitmask */ |
f89bd95c HR |
204 | int bt_ep; /* the endpoint of the button interface */ |
205 | int bt_datalen; /* data length of the button interface */ | |
206 | int tp_ep; /* the endpoint of the trackpad interface */ | |
9894cf0f HR |
207 | enum tp_type tp_type; /* type of trackpad interface */ |
208 | int tp_offset; /* offset to trackpad finger data */ | |
f89bd95c HR |
209 | int tp_datalen; /* data length of the trackpad interface */ |
210 | struct bcm5974_param p; /* finger pressure limits */ | |
211 | struct bcm5974_param w; /* finger width limits */ | |
212 | struct bcm5974_param x; /* horizontal limits */ | |
213 | struct bcm5974_param y; /* vertical limits */ | |
214 | }; | |
215 | ||
216 | /* logical device structure */ | |
217 | struct bcm5974 { | |
218 | char phys[64]; | |
219 | struct usb_device *udev; /* usb device */ | |
88da765f | 220 | struct usb_interface *intf; /* our interface */ |
f89bd95c HR |
221 | struct input_dev *input; /* input dev */ |
222 | struct bcm5974_config cfg; /* device configuration */ | |
223 | struct mutex pm_mutex; /* serialize access to open/suspend */ | |
224 | int opened; /* 1: opened, 0: closed */ | |
225 | struct urb *bt_urb; /* button usb request block */ | |
226 | struct bt_data *bt_data; /* button transferred data */ | |
227 | struct urb *tp_urb; /* trackpad usb request block */ | |
9894cf0f | 228 | u8 *tp_data; /* trackpad transferred data */ |
75e21e3f | 229 | int fingers; /* number of fingers on trackpad */ |
f89bd95c HR |
230 | }; |
231 | ||
232 | /* logical dimensions */ | |
233 | #define DIM_PRESSURE 256 /* maximum finger pressure */ | |
234 | #define DIM_WIDTH 16 /* maximum finger width */ | |
235 | #define DIM_X 1280 /* maximum trackpad x value */ | |
236 | #define DIM_Y 800 /* maximum trackpad y value */ | |
237 | ||
238 | /* logical signal quality */ | |
239 | #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ | |
240 | #define SN_WIDTH 100 /* width signal-to-noise ratio */ | |
241 | #define SN_COORD 250 /* coordinate signal-to-noise ratio */ | |
242 | ||
75e21e3f HR |
243 | /* pressure thresholds */ |
244 | #define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE) | |
245 | #define PRESSURE_HIGH (3 * PRESSURE_LOW) | |
246 | ||
f89bd95c HR |
247 | /* device constants */ |
248 | static const struct bcm5974_config bcm5974_config_table[] = { | |
249 | { | |
250 | USB_DEVICE_ID_APPLE_WELLSPRING_ANSI, | |
251 | USB_DEVICE_ID_APPLE_WELLSPRING_ISO, | |
252 | USB_DEVICE_ID_APPLE_WELLSPRING_JIS, | |
158e9287 | 253 | 0, |
f89bd95c | 254 | 0x84, sizeof(struct bt_data), |
9894cf0f | 255 | 0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS, |
f89bd95c HR |
256 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, |
257 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
258 | { DIM_X, DIM_X / SN_COORD, -4824, 5342 }, | |
259 | { DIM_Y, DIM_Y / SN_COORD, -172, 5820 } | |
260 | }, | |
261 | { | |
262 | USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI, | |
263 | USB_DEVICE_ID_APPLE_WELLSPRING2_ISO, | |
264 | USB_DEVICE_ID_APPLE_WELLSPRING2_JIS, | |
158e9287 | 265 | 0, |
f89bd95c | 266 | 0x84, sizeof(struct bt_data), |
9894cf0f | 267 | 0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS, |
f89bd95c HR |
268 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, |
269 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
270 | { DIM_X, DIM_X / SN_COORD, -4824, 4824 }, | |
271 | { DIM_Y, DIM_Y / SN_COORD, -172, 4290 } | |
272 | }, | |
158e9287 HR |
273 | { |
274 | USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI, | |
275 | USB_DEVICE_ID_APPLE_WELLSPRING3_ISO, | |
276 | USB_DEVICE_ID_APPLE_WELLSPRING3_JIS, | |
277 | HAS_INTEGRATED_BUTTON, | |
278 | 0x84, sizeof(struct bt_data), | |
279 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
280 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
281 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
282 | { DIM_X, DIM_X / SN_COORD, -4460, 5166 }, | |
283 | { DIM_Y, DIM_Y / SN_COORD, -75, 6700 } | |
284 | }, | |
6021afcf EH |
285 | { |
286 | USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI, | |
287 | USB_DEVICE_ID_APPLE_WELLSPRING4_ISO, | |
288 | USB_DEVICE_ID_APPLE_WELLSPRING4_JIS, | |
289 | HAS_INTEGRATED_BUTTON, | |
290 | 0x84, sizeof(struct bt_data), | |
291 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
292 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
293 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
294 | { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, | |
295 | { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } | |
296 | }, | |
297 | { | |
298 | USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI, | |
299 | USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO, | |
300 | USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS, | |
301 | HAS_INTEGRATED_BUTTON, | |
302 | 0x84, sizeof(struct bt_data), | |
303 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
304 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
305 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
306 | { DIM_X, DIM_X / SN_COORD, -4616, 5112 }, | |
307 | { DIM_Y, DIM_Y / SN_COORD, -142, 5234 } | |
308 | }, | |
47340bd9 AB |
309 | { |
310 | USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI, | |
311 | USB_DEVICE_ID_APPLE_WELLSPRING5_ISO, | |
312 | USB_DEVICE_ID_APPLE_WELLSPRING5_JIS, | |
313 | HAS_INTEGRATED_BUTTON, | |
314 | 0x84, sizeof(struct bt_data), | |
315 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
316 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
317 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
318 | { DIM_X, DIM_X / SN_COORD, -4415, 5050 }, | |
319 | { DIM_Y, DIM_Y / SN_COORD, -55, 6680 } | |
320 | }, | |
db0b34b0 JD |
321 | { |
322 | USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI, | |
323 | USB_DEVICE_ID_APPLE_WELLSPRING6_ISO, | |
324 | USB_DEVICE_ID_APPLE_WELLSPRING6_JIS, | |
325 | HAS_INTEGRATED_BUTTON, | |
326 | 0x84, sizeof(struct bt_data), | |
327 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
328 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
329 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
330 | { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, | |
331 | { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } | |
332 | }, | |
c331eb58 AD |
333 | { |
334 | USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI, | |
335 | USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO, | |
336 | USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS, | |
337 | HAS_INTEGRATED_BUTTON, | |
338 | 0x84, sizeof(struct bt_data), | |
339 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
340 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
341 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
342 | { DIM_X, DIM_X / SN_COORD, -4750, 5280 }, | |
343 | { DIM_Y, DIM_Y / SN_COORD, -150, 6730 } | |
344 | }, | |
1c601bea PAVM |
345 | { |
346 | USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI, | |
347 | USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO, | |
348 | USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS, | |
349 | HAS_INTEGRATED_BUTTON, | |
350 | 0x84, sizeof(struct bt_data), | |
351 | 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, | |
352 | { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, | |
353 | { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, | |
354 | { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, | |
355 | { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } | |
356 | }, | |
f89bd95c HR |
357 | {} |
358 | }; | |
359 | ||
360 | /* return the device-specific configuration by device */ | |
361 | static const struct bcm5974_config *bcm5974_get_config(struct usb_device *udev) | |
362 | { | |
363 | u16 id = le16_to_cpu(udev->descriptor.idProduct); | |
364 | const struct bcm5974_config *cfg; | |
365 | ||
366 | for (cfg = bcm5974_config_table; cfg->ansi; ++cfg) | |
367 | if (cfg->ansi == id || cfg->iso == id || cfg->jis == id) | |
368 | return cfg; | |
369 | ||
370 | return bcm5974_config_table; | |
371 | } | |
372 | ||
373 | /* convert 16-bit little endian to signed integer */ | |
374 | static inline int raw2int(__le16 x) | |
375 | { | |
376 | return (signed short)le16_to_cpu(x); | |
377 | } | |
378 | ||
379 | /* scale device data to logical dimensions (asserts devmin < devmax) */ | |
380 | static inline int int2scale(const struct bcm5974_param *p, int x) | |
381 | { | |
382 | return x * p->dim / (p->devmax - p->devmin); | |
383 | } | |
384 | ||
385 | /* all logical value ranges are [0,dim). */ | |
386 | static inline int int2bound(const struct bcm5974_param *p, int x) | |
387 | { | |
388 | int s = int2scale(p, x); | |
389 | ||
390 | return clamp_val(s, 0, p->dim - 1); | |
391 | } | |
392 | ||
393 | /* setup which logical events to report */ | |
394 | static void setup_events_to_report(struct input_dev *input_dev, | |
395 | const struct bcm5974_config *cfg) | |
396 | { | |
397 | __set_bit(EV_ABS, input_dev->evbit); | |
398 | ||
399 | input_set_abs_params(input_dev, ABS_PRESSURE, | |
400 | 0, cfg->p.dim, cfg->p.fuzz, 0); | |
401 | input_set_abs_params(input_dev, ABS_TOOL_WIDTH, | |
402 | 0, cfg->w.dim, cfg->w.fuzz, 0); | |
403 | input_set_abs_params(input_dev, ABS_X, | |
404 | 0, cfg->x.dim, cfg->x.fuzz, 0); | |
405 | input_set_abs_params(input_dev, ABS_Y, | |
406 | 0, cfg->y.dim, cfg->y.fuzz, 0); | |
407 | ||
6f2701b7 HR |
408 | /* finger touch area */ |
409 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
410 | cfg->w.devmin, cfg->w.devmax, 0, 0); | |
411 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, | |
412 | cfg->w.devmin, cfg->w.devmax, 0, 0); | |
413 | /* finger approach area */ | |
414 | input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, | |
415 | cfg->w.devmin, cfg->w.devmax, 0, 0); | |
416 | input_set_abs_params(input_dev, ABS_MT_WIDTH_MINOR, | |
417 | cfg->w.devmin, cfg->w.devmax, 0, 0); | |
418 | /* finger orientation */ | |
419 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
420 | -MAX_FINGER_ORIENTATION, | |
421 | MAX_FINGER_ORIENTATION, 0, 0); | |
422 | /* finger position */ | |
423 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, | |
424 | cfg->x.devmin, cfg->x.devmax, 0, 0); | |
425 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
426 | cfg->y.devmin, cfg->y.devmax, 0, 0); | |
427 | ||
f89bd95c | 428 | __set_bit(EV_KEY, input_dev->evbit); |
a6821f34 | 429 | __set_bit(BTN_TOUCH, input_dev->keybit); |
f89bd95c HR |
430 | __set_bit(BTN_TOOL_FINGER, input_dev->keybit); |
431 | __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); | |
432 | __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); | |
6916d97f | 433 | __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); |
f89bd95c | 434 | __set_bit(BTN_LEFT, input_dev->keybit); |
c13aea03 | 435 | |
7491f3df | 436 | __set_bit(INPUT_PROP_POINTER, input_dev->propbit); |
52965cc0 JP |
437 | if (cfg->caps & HAS_INTEGRATED_BUTTON) |
438 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
439 | ||
c13aea03 | 440 | input_set_events_per_packet(input_dev, 60); |
f89bd95c HR |
441 | } |
442 | ||
443 | /* report button data as logical button state */ | |
444 | static int report_bt_state(struct bcm5974 *dev, int size) | |
445 | { | |
446 | if (size != sizeof(struct bt_data)) | |
447 | return -EIO; | |
448 | ||
53402193 HR |
449 | dprintk(7, |
450 | "bcm5974: button data: %x %x %x %x\n", | |
451 | dev->bt_data->unknown1, dev->bt_data->button, | |
452 | dev->bt_data->rel_x, dev->bt_data->rel_y); | |
453 | ||
f89bd95c HR |
454 | input_report_key(dev->input, BTN_LEFT, dev->bt_data->button); |
455 | input_sync(dev->input); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
6f2701b7 HR |
460 | static void report_finger_data(struct input_dev *input, |
461 | const struct bcm5974_config *cfg, | |
462 | const struct tp_finger *f) | |
463 | { | |
57157bec HR |
464 | input_report_abs(input, ABS_MT_TOUCH_MAJOR, |
465 | raw2int(f->force_major) << 1); | |
466 | input_report_abs(input, ABS_MT_TOUCH_MINOR, | |
467 | raw2int(f->force_minor) << 1); | |
468 | input_report_abs(input, ABS_MT_WIDTH_MAJOR, | |
469 | raw2int(f->size_major) << 1); | |
470 | input_report_abs(input, ABS_MT_WIDTH_MINOR, | |
471 | raw2int(f->size_minor) << 1); | |
6f2701b7 HR |
472 | input_report_abs(input, ABS_MT_ORIENTATION, |
473 | MAX_FINGER_ORIENTATION - raw2int(f->orientation)); | |
474 | input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x)); | |
475 | input_report_abs(input, ABS_MT_POSITION_Y, | |
476 | cfg->y.devmin + cfg->y.devmax - raw2int(f->abs_y)); | |
477 | input_mt_sync(input); | |
478 | } | |
479 | ||
f89bd95c HR |
480 | /* report trackpad data as logical trackpad state */ |
481 | static int report_tp_state(struct bcm5974 *dev, int size) | |
482 | { | |
483 | const struct bcm5974_config *c = &dev->cfg; | |
9894cf0f | 484 | const struct tp_finger *f; |
f89bd95c | 485 | struct input_dev *input = dev->input; |
6f2701b7 | 486 | int raw_p, raw_w, raw_x, raw_y, raw_n, i; |
9de48cc3 | 487 | int ptest, origin, ibt = 0, nmin = 0, nmax = 0; |
75e21e3f | 488 | int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0; |
f89bd95c | 489 | |
9894cf0f | 490 | if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0) |
f89bd95c HR |
491 | return -EIO; |
492 | ||
9894cf0f HR |
493 | /* finger data, le16-aligned */ |
494 | f = (const struct tp_finger *)(dev->tp_data + c->tp_offset); | |
495 | raw_n = (size - c->tp_offset) / SIZEOF_FINGER; | |
496 | ||
75e21e3f | 497 | /* always track the first finger; when detached, start over */ |
9894cf0f | 498 | if (raw_n) { |
6f2701b7 HR |
499 | |
500 | /* report raw trackpad data */ | |
501 | for (i = 0; i < raw_n; i++) | |
502 | report_finger_data(input, c, &f[i]); | |
503 | ||
75e21e3f HR |
504 | raw_p = raw2int(f->force_major); |
505 | raw_w = raw2int(f->size_major); | |
506 | raw_x = raw2int(f->abs_x); | |
507 | raw_y = raw2int(f->abs_y); | |
f89bd95c HR |
508 | |
509 | dprintk(9, | |
53402193 HR |
510 | "bcm5974: " |
511 | "raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n", | |
512 | raw_p, raw_w, raw_x, raw_y, raw_n); | |
75e21e3f HR |
513 | |
514 | ptest = int2bound(&c->p, raw_p); | |
515 | origin = raw2int(f->origin); | |
158e9287 | 516 | |
9de48cc3 HR |
517 | /* while tracking finger still valid, count all fingers */ |
518 | if (ptest > PRESSURE_LOW && origin) { | |
519 | abs_p = ptest; | |
520 | abs_w = int2bound(&c->w, raw_w); | |
521 | abs_x = int2bound(&c->x, raw_x - c->x.devmin); | |
522 | abs_y = int2bound(&c->y, c->y.devmax - raw_y); | |
523 | while (raw_n--) { | |
524 | ptest = int2bound(&c->p, | |
525 | raw2int(f->force_major)); | |
526 | if (ptest > PRESSURE_LOW) | |
527 | nmax++; | |
528 | if (ptest > PRESSURE_HIGH) | |
529 | nmin++; | |
530 | f++; | |
531 | } | |
75e21e3f | 532 | } |
f89bd95c HR |
533 | } |
534 | ||
50635115 HR |
535 | /* set the integrated button if applicable */ |
536 | if (c->tp_type == TYPE2) | |
537 | ibt = raw2int(dev->tp_data[BUTTON_TYPE2]); | |
538 | ||
75e21e3f HR |
539 | if (dev->fingers < nmin) |
540 | dev->fingers = nmin; | |
541 | if (dev->fingers > nmax) | |
542 | dev->fingers = nmax; | |
543 | ||
a6821f34 | 544 | input_report_key(input, BTN_TOUCH, dev->fingers > 0); |
75e21e3f HR |
545 | input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1); |
546 | input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2); | |
6916d97f HR |
547 | input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3); |
548 | input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3); | |
f89bd95c | 549 | |
75e21e3f HR |
550 | input_report_abs(input, ABS_PRESSURE, abs_p); |
551 | input_report_abs(input, ABS_TOOL_WIDTH, abs_w); | |
552 | ||
553 | if (abs_p) { | |
554 | input_report_abs(input, ABS_X, abs_x); | |
555 | input_report_abs(input, ABS_Y, abs_y); | |
556 | ||
557 | dprintk(8, | |
558 | "bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d " | |
53402193 HR |
559 | "nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w, |
560 | abs_x, abs_y, nmin, nmax, dev->fingers, ibt); | |
75e21e3f HR |
561 | |
562 | } | |
f89bd95c | 563 | |
158e9287 HR |
564 | /* type 2 reports button events via ibt only */ |
565 | if (c->tp_type == TYPE2) | |
566 | input_report_key(input, BTN_LEFT, ibt); | |
567 | ||
f89bd95c HR |
568 | input_sync(input); |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | /* Wellspring initialization constants */ | |
574 | #define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID 1 | |
575 | #define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID 9 | |
576 | #define BCM5974_WELLSPRING_MODE_REQUEST_VALUE 0x300 | |
577 | #define BCM5974_WELLSPRING_MODE_REQUEST_INDEX 0 | |
578 | #define BCM5974_WELLSPRING_MODE_VENDOR_VALUE 0x01 | |
cd72ad3f | 579 | #define BCM5974_WELLSPRING_MODE_NORMAL_VALUE 0x08 |
f89bd95c | 580 | |
cd72ad3f | 581 | static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on) |
f89bd95c HR |
582 | { |
583 | char *data = kmalloc(8, GFP_KERNEL); | |
584 | int retval = 0, size; | |
585 | ||
586 | if (!data) { | |
587 | err("bcm5974: out of memory"); | |
588 | retval = -ENOMEM; | |
589 | goto out; | |
590 | } | |
591 | ||
592 | /* read configuration */ | |
593 | size = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
594 | BCM5974_WELLSPRING_MODE_READ_REQUEST_ID, | |
595 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
596 | BCM5974_WELLSPRING_MODE_REQUEST_VALUE, | |
597 | BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000); | |
598 | ||
599 | if (size != 8) { | |
600 | err("bcm5974: could not read from device"); | |
601 | retval = -EIO; | |
602 | goto out; | |
603 | } | |
604 | ||
605 | /* apply the mode switch */ | |
cd72ad3f HR |
606 | data[0] = on ? |
607 | BCM5974_WELLSPRING_MODE_VENDOR_VALUE : | |
608 | BCM5974_WELLSPRING_MODE_NORMAL_VALUE; | |
f89bd95c HR |
609 | |
610 | /* write configuration */ | |
611 | size = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
612 | BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID, | |
613 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
614 | BCM5974_WELLSPRING_MODE_REQUEST_VALUE, | |
615 | BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000); | |
616 | ||
617 | if (size != 8) { | |
618 | err("bcm5974: could not write to device"); | |
619 | retval = -EIO; | |
620 | goto out; | |
621 | } | |
622 | ||
cd72ad3f HR |
623 | dprintk(2, "bcm5974: switched to %s mode.\n", |
624 | on ? "wellspring" : "normal"); | |
f89bd95c HR |
625 | |
626 | out: | |
627 | kfree(data); | |
628 | return retval; | |
629 | } | |
630 | ||
631 | static void bcm5974_irq_button(struct urb *urb) | |
632 | { | |
633 | struct bcm5974 *dev = urb->context; | |
634 | int error; | |
635 | ||
636 | switch (urb->status) { | |
637 | case 0: | |
638 | break; | |
639 | case -EOVERFLOW: | |
640 | case -ECONNRESET: | |
641 | case -ENOENT: | |
642 | case -ESHUTDOWN: | |
643 | dbg("bcm5974: button urb shutting down: %d", urb->status); | |
644 | return; | |
645 | default: | |
646 | dbg("bcm5974: button urb status: %d", urb->status); | |
647 | goto exit; | |
648 | } | |
649 | ||
650 | if (report_bt_state(dev, dev->bt_urb->actual_length)) | |
651 | dprintk(1, "bcm5974: bad button package, length: %d\n", | |
652 | dev->bt_urb->actual_length); | |
653 | ||
654 | exit: | |
655 | error = usb_submit_urb(dev->bt_urb, GFP_ATOMIC); | |
656 | if (error) | |
657 | err("bcm5974: button urb failed: %d", error); | |
658 | } | |
659 | ||
660 | static void bcm5974_irq_trackpad(struct urb *urb) | |
661 | { | |
662 | struct bcm5974 *dev = urb->context; | |
663 | int error; | |
664 | ||
665 | switch (urb->status) { | |
666 | case 0: | |
667 | break; | |
668 | case -EOVERFLOW: | |
669 | case -ECONNRESET: | |
670 | case -ENOENT: | |
671 | case -ESHUTDOWN: | |
672 | dbg("bcm5974: trackpad urb shutting down: %d", urb->status); | |
673 | return; | |
674 | default: | |
675 | dbg("bcm5974: trackpad urb status: %d", urb->status); | |
676 | goto exit; | |
677 | } | |
678 | ||
679 | /* control response ignored */ | |
680 | if (dev->tp_urb->actual_length == 2) | |
681 | goto exit; | |
682 | ||
683 | if (report_tp_state(dev, dev->tp_urb->actual_length)) | |
684 | dprintk(1, "bcm5974: bad trackpad package, length: %d\n", | |
685 | dev->tp_urb->actual_length); | |
686 | ||
687 | exit: | |
688 | error = usb_submit_urb(dev->tp_urb, GFP_ATOMIC); | |
689 | if (error) | |
690 | err("bcm5974: trackpad urb failed: %d", error); | |
691 | } | |
692 | ||
693 | /* | |
694 | * The Wellspring trackpad, like many recent Apple trackpads, share | |
695 | * the usb device with the keyboard. Since keyboards are usually | |
696 | * handled by the HID system, the device ends up being handled by two | |
697 | * modules. Setting up the device therefore becomes slightly | |
698 | * complicated. To enable multitouch features, a mode switch is | |
699 | * required, which is usually applied via the control interface of the | |
700 | * device. It can be argued where this switch should take place. In | |
701 | * some drivers, like appletouch, the switch is made during | |
702 | * probe. However, the hid module may also alter the state of the | |
703 | * device, resulting in trackpad malfunction under certain | |
704 | * circumstances. To get around this problem, there is at least one | |
705 | * example that utilizes the USB_QUIRK_RESET_RESUME quirk in order to | |
25985edc | 706 | * receive a reset_resume request rather than the normal resume. |
f89bd95c HR |
707 | * Since the implementation of reset_resume is equal to mode switch |
708 | * plus start_traffic, it seems easier to always do the switch when | |
709 | * starting traffic on the device. | |
710 | */ | |
711 | static int bcm5974_start_traffic(struct bcm5974 *dev) | |
712 | { | |
1719ec41 LJ |
713 | int error; |
714 | ||
715 | error = bcm5974_wellspring_mode(dev, true); | |
716 | if (error) { | |
f89bd95c | 717 | dprintk(1, "bcm5974: mode switch failed\n"); |
1719ec41 | 718 | goto err_out; |
f89bd95c HR |
719 | } |
720 | ||
1719ec41 LJ |
721 | error = usb_submit_urb(dev->bt_urb, GFP_KERNEL); |
722 | if (error) | |
723 | goto err_reset_mode; | |
f89bd95c | 724 | |
1719ec41 LJ |
725 | error = usb_submit_urb(dev->tp_urb, GFP_KERNEL); |
726 | if (error) | |
f89bd95c HR |
727 | goto err_kill_bt; |
728 | ||
729 | return 0; | |
730 | ||
731 | err_kill_bt: | |
732 | usb_kill_urb(dev->bt_urb); | |
1719ec41 LJ |
733 | err_reset_mode: |
734 | bcm5974_wellspring_mode(dev, false); | |
735 | err_out: | |
736 | return error; | |
f89bd95c HR |
737 | } |
738 | ||
739 | static void bcm5974_pause_traffic(struct bcm5974 *dev) | |
740 | { | |
741 | usb_kill_urb(dev->tp_urb); | |
742 | usb_kill_urb(dev->bt_urb); | |
cd72ad3f | 743 | bcm5974_wellspring_mode(dev, false); |
f89bd95c HR |
744 | } |
745 | ||
746 | /* | |
747 | * The code below implements open/close and manual suspend/resume. | |
748 | * All functions may be called in random order. | |
749 | * | |
750 | * Opening a suspended device fails with EACCES - permission denied. | |
751 | * | |
752 | * Failing a resume leaves the device resumed but closed. | |
753 | */ | |
754 | static int bcm5974_open(struct input_dev *input) | |
755 | { | |
756 | struct bcm5974 *dev = input_get_drvdata(input); | |
757 | int error; | |
758 | ||
88da765f DT |
759 | error = usb_autopm_get_interface(dev->intf); |
760 | if (error) | |
761 | return error; | |
762 | ||
f89bd95c HR |
763 | mutex_lock(&dev->pm_mutex); |
764 | ||
765 | error = bcm5974_start_traffic(dev); | |
766 | if (!error) | |
767 | dev->opened = 1; | |
768 | ||
769 | mutex_unlock(&dev->pm_mutex); | |
770 | ||
88da765f DT |
771 | if (error) |
772 | usb_autopm_put_interface(dev->intf); | |
773 | ||
f89bd95c HR |
774 | return error; |
775 | } | |
776 | ||
777 | static void bcm5974_close(struct input_dev *input) | |
778 | { | |
779 | struct bcm5974 *dev = input_get_drvdata(input); | |
780 | ||
781 | mutex_lock(&dev->pm_mutex); | |
782 | ||
783 | bcm5974_pause_traffic(dev); | |
784 | dev->opened = 0; | |
785 | ||
786 | mutex_unlock(&dev->pm_mutex); | |
88da765f DT |
787 | |
788 | usb_autopm_put_interface(dev->intf); | |
f89bd95c HR |
789 | } |
790 | ||
791 | static int bcm5974_suspend(struct usb_interface *iface, pm_message_t message) | |
792 | { | |
793 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
794 | ||
795 | mutex_lock(&dev->pm_mutex); | |
796 | ||
797 | if (dev->opened) | |
798 | bcm5974_pause_traffic(dev); | |
799 | ||
800 | mutex_unlock(&dev->pm_mutex); | |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
805 | static int bcm5974_resume(struct usb_interface *iface) | |
806 | { | |
807 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
808 | int error = 0; | |
809 | ||
810 | mutex_lock(&dev->pm_mutex); | |
811 | ||
812 | if (dev->opened) | |
813 | error = bcm5974_start_traffic(dev); | |
814 | ||
815 | mutex_unlock(&dev->pm_mutex); | |
816 | ||
817 | return error; | |
818 | } | |
819 | ||
820 | static int bcm5974_probe(struct usb_interface *iface, | |
821 | const struct usb_device_id *id) | |
822 | { | |
823 | struct usb_device *udev = interface_to_usbdev(iface); | |
824 | const struct bcm5974_config *cfg; | |
825 | struct bcm5974 *dev; | |
826 | struct input_dev *input_dev; | |
827 | int error = -ENOMEM; | |
828 | ||
829 | /* find the product index */ | |
830 | cfg = bcm5974_get_config(udev); | |
831 | ||
832 | /* allocate memory for our device state and initialize it */ | |
833 | dev = kzalloc(sizeof(struct bcm5974), GFP_KERNEL); | |
834 | input_dev = input_allocate_device(); | |
835 | if (!dev || !input_dev) { | |
836 | err("bcm5974: out of memory"); | |
837 | goto err_free_devs; | |
838 | } | |
839 | ||
840 | dev->udev = udev; | |
88da765f | 841 | dev->intf = iface; |
f89bd95c HR |
842 | dev->input = input_dev; |
843 | dev->cfg = *cfg; | |
844 | mutex_init(&dev->pm_mutex); | |
845 | ||
846 | /* setup urbs */ | |
847 | dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL); | |
848 | if (!dev->bt_urb) | |
849 | goto err_free_devs; | |
850 | ||
851 | dev->tp_urb = usb_alloc_urb(0, GFP_KERNEL); | |
852 | if (!dev->tp_urb) | |
853 | goto err_free_bt_urb; | |
854 | ||
997ea58e DM |
855 | dev->bt_data = usb_alloc_coherent(dev->udev, |
856 | dev->cfg.bt_datalen, GFP_KERNEL, | |
857 | &dev->bt_urb->transfer_dma); | |
f89bd95c HR |
858 | if (!dev->bt_data) |
859 | goto err_free_urb; | |
860 | ||
997ea58e DM |
861 | dev->tp_data = usb_alloc_coherent(dev->udev, |
862 | dev->cfg.tp_datalen, GFP_KERNEL, | |
863 | &dev->tp_urb->transfer_dma); | |
f89bd95c HR |
864 | if (!dev->tp_data) |
865 | goto err_free_bt_buffer; | |
866 | ||
867 | usb_fill_int_urb(dev->bt_urb, udev, | |
868 | usb_rcvintpipe(udev, cfg->bt_ep), | |
869 | dev->bt_data, dev->cfg.bt_datalen, | |
870 | bcm5974_irq_button, dev, 1); | |
871 | ||
872 | usb_fill_int_urb(dev->tp_urb, udev, | |
873 | usb_rcvintpipe(udev, cfg->tp_ep), | |
874 | dev->tp_data, dev->cfg.tp_datalen, | |
875 | bcm5974_irq_trackpad, dev, 1); | |
876 | ||
877 | /* create bcm5974 device */ | |
878 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); | |
879 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
880 | ||
881 | input_dev->name = "bcm5974"; | |
882 | input_dev->phys = dev->phys; | |
883 | usb_to_input_id(dev->udev, &input_dev->id); | |
158e9287 HR |
884 | /* report driver capabilities via the version field */ |
885 | input_dev->id.version = cfg->caps; | |
f89bd95c HR |
886 | input_dev->dev.parent = &iface->dev; |
887 | ||
888 | input_set_drvdata(input_dev, dev); | |
889 | ||
890 | input_dev->open = bcm5974_open; | |
891 | input_dev->close = bcm5974_close; | |
892 | ||
893 | setup_events_to_report(input_dev, cfg); | |
894 | ||
895 | error = input_register_device(dev->input); | |
896 | if (error) | |
897 | goto err_free_buffer; | |
898 | ||
899 | /* save our data pointer in this interface device */ | |
900 | usb_set_intfdata(iface, dev); | |
901 | ||
902 | return 0; | |
903 | ||
904 | err_free_buffer: | |
997ea58e | 905 | usb_free_coherent(dev->udev, dev->cfg.tp_datalen, |
f89bd95c HR |
906 | dev->tp_data, dev->tp_urb->transfer_dma); |
907 | err_free_bt_buffer: | |
997ea58e | 908 | usb_free_coherent(dev->udev, dev->cfg.bt_datalen, |
f89bd95c HR |
909 | dev->bt_data, dev->bt_urb->transfer_dma); |
910 | err_free_urb: | |
911 | usb_free_urb(dev->tp_urb); | |
912 | err_free_bt_urb: | |
913 | usb_free_urb(dev->bt_urb); | |
914 | err_free_devs: | |
915 | usb_set_intfdata(iface, NULL); | |
916 | input_free_device(input_dev); | |
917 | kfree(dev); | |
918 | return error; | |
919 | } | |
920 | ||
921 | static void bcm5974_disconnect(struct usb_interface *iface) | |
922 | { | |
923 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
924 | ||
925 | usb_set_intfdata(iface, NULL); | |
926 | ||
927 | input_unregister_device(dev->input); | |
997ea58e DM |
928 | usb_free_coherent(dev->udev, dev->cfg.tp_datalen, |
929 | dev->tp_data, dev->tp_urb->transfer_dma); | |
930 | usb_free_coherent(dev->udev, dev->cfg.bt_datalen, | |
931 | dev->bt_data, dev->bt_urb->transfer_dma); | |
f89bd95c HR |
932 | usb_free_urb(dev->tp_urb); |
933 | usb_free_urb(dev->bt_urb); | |
934 | kfree(dev); | |
935 | } | |
936 | ||
937 | static struct usb_driver bcm5974_driver = { | |
938 | .name = "bcm5974", | |
939 | .probe = bcm5974_probe, | |
940 | .disconnect = bcm5974_disconnect, | |
941 | .suspend = bcm5974_suspend, | |
942 | .resume = bcm5974_resume, | |
f89bd95c | 943 | .id_table = bcm5974_table, |
88da765f | 944 | .supports_autosuspend = 1, |
f89bd95c HR |
945 | }; |
946 | ||
08642e7c | 947 | module_usb_driver(bcm5974_driver); |