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Henrik Rydbergf89bd952008-08-08 14:59:30 -04001/*
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
Henrik Rydberg158e9282009-04-28 07:03:54 -070054/* 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
Edgar (gimli) Hucek6021afc2010-11-09 17:38:42 +010058/* 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
Andy Botting47340bd2011-03-12 20:27:22 -080066/* 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
Pieter-Augustijn Van Malleghem1c601be2011-09-09 13:29:45 -070070/* 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
Joshua V. Dillondb0b34b2011-08-08 23:45:14 -070074/* 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
Andrew Drakec331eb52011-08-16 11:07:39 -070078/* 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
Henrik Rydbergf89bd952008-08-08 14:59:30 -040082
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 */
Henrik Rydberg158e0fb2008-09-04 22:20:10 -040094static const struct usb_device_id bcm5974_table[] = {
Henrik Rydbergf89bd952008-08-08 14:59:30 -040095 /* 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),
Henrik Rydberg158e9282009-04-28 07:03:54 -0700103 /* 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),
Edgar (gimli) Hucek6021afc2010-11-09 17:38:42 +0100107 /* 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),
Andy Botting47340bd2011-03-12 20:27:22 -0800115 /* 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),
Pieter-Augustijn Van Malleghem1c601be2011-09-09 13:29:45 -0700119 /* 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),
Joshua V. Dillondb0b34b2011-08-08 23:45:14 -0700123 /* 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),
Andrew Drakec331eb52011-08-16 11:07:39 -0700127 /* 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),
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400131 /* Terminating entry */
132 {}
133};
134MODULE_DEVICE_TABLE(usb, bcm5974_table);
135
136MODULE_AUTHOR("Henrik Rydberg");
137MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver");
138MODULE_LICENSE("GPL");
139
140#define dprintk(level, format, a...)\
141 { if (debug >= level) printk(KERN_DEBUG format, ##a); }
142
143static int debug = 1;
144module_param(debug, int, 0644);
145MODULE_PARM_DESC(debug, "Activate debugging output");
146
147/* button data structure */
148struct 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
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700155/* trackpad header types */
156enum tp_type {
Henrik Rydberg158e9282009-04-28 07:03:54 -0700157 TYPE1, /* plain trackpad */
158 TYPE2 /* button integrated in trackpad */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400159};
160
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700161/* trackpad finger data offsets, le16-aligned */
162#define FINGER_TYPE1 (13 * sizeof(__le16))
Henrik Rydberg158e9282009-04-28 07:03:54 -0700163#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
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700170
171/* trackpad finger structure, le16-aligned */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400172struct tp_finger {
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400173 __le16 origin; /* zero when switching track finger */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400174 __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 */
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700185} __attribute__((packed,aligned(2)));
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400186
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700187/* 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)
Henrik Rydberg6f2701b2010-01-06 00:32:48 -0800190#define MAX_FINGER_ORIENTATION 16384
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400191
192/* device-specific parameters */
193struct 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 */
201struct bcm5974_config {
202 int ansi, iso, jis; /* the product id of this device */
Henrik Rydberg158e9282009-04-28 07:03:54 -0700203 int caps; /* device capability bitmask */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400204 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 */
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700207 enum tp_type tp_type; /* type of trackpad interface */
208 int tp_offset; /* offset to trackpad finger data */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400209 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 */
217struct bcm5974 {
218 char phys[64];
219 struct usb_device *udev; /* usb device */
Dmitry Torokhov88da7652008-08-08 14:59:32 -0400220 struct usb_interface *intf; /* our interface */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400221 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 */
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700228 u8 *tp_data; /* trackpad transferred data */
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400229 int fingers; /* number of fingers on trackpad */
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400230};
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
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400243/* pressure thresholds */
244#define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE)
245#define PRESSURE_HIGH (3 * PRESSURE_LOW)
246
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400247/* device constants */
248static 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,
Henrik Rydberg158e9282009-04-28 07:03:54 -0700253 0,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400254 0x84, sizeof(struct bt_data),
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700255 0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400256 { 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,
Henrik Rydberg158e9282009-04-28 07:03:54 -0700265 0,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400266 0x84, sizeof(struct bt_data),
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700267 0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400268 { 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 },
Henrik Rydberg158e9282009-04-28 07:03:54 -0700273 {
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 },
Edgar (gimli) Hucek6021afc2010-11-09 17:38:42 +0100285 {
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 },
Andy Botting47340bd2011-03-12 20:27:22 -0800309 {
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 },
Joshua V. Dillondb0b34b2011-08-08 23:45:14 -0700321 {
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 },
Andrew Drakec331eb52011-08-16 11:07:39 -0700333 {
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 },
Pieter-Augustijn Van Malleghem1c601be2011-09-09 13:29:45 -0700345 {
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 },
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400357 {}
358};
359
360/* return the device-specific configuration by device */
361static 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 */
374static 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) */
380static 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). */
386static 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 */
394static 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
Henrik Rydberg6f2701b2010-01-06 00:32:48 -0800408 /* 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
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400428 __set_bit(EV_KEY, input_dev->evbit);
Henrik Rydberga6821f32008-09-04 22:28:31 -0400429 __set_bit(BTN_TOUCH, input_dev->keybit);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400430 __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);
Henrik Rydberg6916d972009-04-27 11:52:43 -0700433 __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400434 __set_bit(BTN_LEFT, input_dev->keybit);
Henrik Rydbergc13aea02010-06-23 09:30:22 -0700435
Jussi Pakkanen52965cc2012-01-10 23:04:16 -0800436 if (cfg->caps & HAS_INTEGRATED_BUTTON)
437 __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
438
Henrik Rydbergc13aea02010-06-23 09:30:22 -0700439 input_set_events_per_packet(input_dev, 60);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400440}
441
442/* report button data as logical button state */
443static int report_bt_state(struct bcm5974 *dev, int size)
444{
445 if (size != sizeof(struct bt_data))
446 return -EIO;
447
Henrik Rydberg53402192009-04-28 07:04:42 -0700448 dprintk(7,
449 "bcm5974: button data: %x %x %x %x\n",
450 dev->bt_data->unknown1, dev->bt_data->button,
451 dev->bt_data->rel_x, dev->bt_data->rel_y);
452
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400453 input_report_key(dev->input, BTN_LEFT, dev->bt_data->button);
454 input_sync(dev->input);
455
456 return 0;
457}
458
Henrik Rydberg6f2701b2010-01-06 00:32:48 -0800459static void report_finger_data(struct input_dev *input,
460 const struct bcm5974_config *cfg,
461 const struct tp_finger *f)
462{
Henrik Rydberg57157bec2010-08-31 17:27:02 -0700463 input_report_abs(input, ABS_MT_TOUCH_MAJOR,
464 raw2int(f->force_major) << 1);
465 input_report_abs(input, ABS_MT_TOUCH_MINOR,
466 raw2int(f->force_minor) << 1);
467 input_report_abs(input, ABS_MT_WIDTH_MAJOR,
468 raw2int(f->size_major) << 1);
469 input_report_abs(input, ABS_MT_WIDTH_MINOR,
470 raw2int(f->size_minor) << 1);
Henrik Rydberg6f2701b2010-01-06 00:32:48 -0800471 input_report_abs(input, ABS_MT_ORIENTATION,
472 MAX_FINGER_ORIENTATION - raw2int(f->orientation));
473 input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x));
474 input_report_abs(input, ABS_MT_POSITION_Y,
475 cfg->y.devmin + cfg->y.devmax - raw2int(f->abs_y));
476 input_mt_sync(input);
477}
478
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400479/* report trackpad data as logical trackpad state */
480static int report_tp_state(struct bcm5974 *dev, int size)
481{
482 const struct bcm5974_config *c = &dev->cfg;
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700483 const struct tp_finger *f;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400484 struct input_dev *input = dev->input;
Henrik Rydberg6f2701b2010-01-06 00:32:48 -0800485 int raw_p, raw_w, raw_x, raw_y, raw_n, i;
Henrik Rydberg9de48cc2009-09-13 09:10:11 -0700486 int ptest, origin, ibt = 0, nmin = 0, nmax = 0;
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400487 int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400488
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700489 if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0)
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400490 return -EIO;
491
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700492 /* finger data, le16-aligned */
493 f = (const struct tp_finger *)(dev->tp_data + c->tp_offset);
494 raw_n = (size - c->tp_offset) / SIZEOF_FINGER;
495
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400496 /* always track the first finger; when detached, start over */
Henrik Rydberg9894cf02009-04-27 11:52:42 -0700497 if (raw_n) {
Henrik Rydberg6f2701b2010-01-06 00:32:48 -0800498
499 /* report raw trackpad data */
500 for (i = 0; i < raw_n; i++)
501 report_finger_data(input, c, &f[i]);
502
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400503 raw_p = raw2int(f->force_major);
504 raw_w = raw2int(f->size_major);
505 raw_x = raw2int(f->abs_x);
506 raw_y = raw2int(f->abs_y);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400507
508 dprintk(9,
Henrik Rydberg53402192009-04-28 07:04:42 -0700509 "bcm5974: "
510 "raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n",
511 raw_p, raw_w, raw_x, raw_y, raw_n);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400512
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400513 ptest = int2bound(&c->p, raw_p);
514 origin = raw2int(f->origin);
Henrik Rydberg158e9282009-04-28 07:03:54 -0700515
Henrik Rydberg9de48cc2009-09-13 09:10:11 -0700516 /* while tracking finger still valid, count all fingers */
517 if (ptest > PRESSURE_LOW && origin) {
518 abs_p = ptest;
519 abs_w = int2bound(&c->w, raw_w);
520 abs_x = int2bound(&c->x, raw_x - c->x.devmin);
521 abs_y = int2bound(&c->y, c->y.devmax - raw_y);
522 while (raw_n--) {
523 ptest = int2bound(&c->p,
524 raw2int(f->force_major));
525 if (ptest > PRESSURE_LOW)
526 nmax++;
527 if (ptest > PRESSURE_HIGH)
528 nmin++;
529 f++;
530 }
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400531 }
532 }
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400533
Henrik Rydberg50635112011-02-25 09:33:13 -0800534 /* set the integrated button if applicable */
535 if (c->tp_type == TYPE2)
536 ibt = raw2int(dev->tp_data[BUTTON_TYPE2]);
537
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400538 if (dev->fingers < nmin)
539 dev->fingers = nmin;
540 if (dev->fingers > nmax)
541 dev->fingers = nmax;
542
Henrik Rydberga6821f32008-09-04 22:28:31 -0400543 input_report_key(input, BTN_TOUCH, dev->fingers > 0);
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400544 input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1);
545 input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2);
Henrik Rydberg6916d972009-04-27 11:52:43 -0700546 input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3);
547 input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3);
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400548
549 input_report_abs(input, ABS_PRESSURE, abs_p);
550 input_report_abs(input, ABS_TOOL_WIDTH, abs_w);
551
552 if (abs_p) {
553 input_report_abs(input, ABS_X, abs_x);
554 input_report_abs(input, ABS_Y, abs_y);
555
556 dprintk(8,
557 "bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d "
Henrik Rydberg53402192009-04-28 07:04:42 -0700558 "nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w,
559 abs_x, abs_y, nmin, nmax, dev->fingers, ibt);
Henrik Rydberg75e21e32008-09-04 22:28:23 -0400560
561 }
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400562
Henrik Rydberg158e9282009-04-28 07:03:54 -0700563 /* type 2 reports button events via ibt only */
564 if (c->tp_type == TYPE2)
565 input_report_key(input, BTN_LEFT, ibt);
566
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400567 input_sync(input);
568
569 return 0;
570}
571
572/* Wellspring initialization constants */
573#define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID 1
574#define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID 9
575#define BCM5974_WELLSPRING_MODE_REQUEST_VALUE 0x300
576#define BCM5974_WELLSPRING_MODE_REQUEST_INDEX 0
577#define BCM5974_WELLSPRING_MODE_VENDOR_VALUE 0x01
Henrik Rydbergcd72ad32008-09-14 11:52:44 -0400578#define BCM5974_WELLSPRING_MODE_NORMAL_VALUE 0x08
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400579
Henrik Rydbergcd72ad32008-09-14 11:52:44 -0400580static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on)
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400581{
582 char *data = kmalloc(8, GFP_KERNEL);
583 int retval = 0, size;
584
585 if (!data) {
586 err("bcm5974: out of memory");
587 retval = -ENOMEM;
588 goto out;
589 }
590
591 /* read configuration */
592 size = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
593 BCM5974_WELLSPRING_MODE_READ_REQUEST_ID,
594 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
595 BCM5974_WELLSPRING_MODE_REQUEST_VALUE,
596 BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000);
597
598 if (size != 8) {
599 err("bcm5974: could not read from device");
600 retval = -EIO;
601 goto out;
602 }
603
604 /* apply the mode switch */
Henrik Rydbergcd72ad32008-09-14 11:52:44 -0400605 data[0] = on ?
606 BCM5974_WELLSPRING_MODE_VENDOR_VALUE :
607 BCM5974_WELLSPRING_MODE_NORMAL_VALUE;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400608
609 /* write configuration */
610 size = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
611 BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID,
612 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
613 BCM5974_WELLSPRING_MODE_REQUEST_VALUE,
614 BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000);
615
616 if (size != 8) {
617 err("bcm5974: could not write to device");
618 retval = -EIO;
619 goto out;
620 }
621
Henrik Rydbergcd72ad32008-09-14 11:52:44 -0400622 dprintk(2, "bcm5974: switched to %s mode.\n",
623 on ? "wellspring" : "normal");
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400624
625 out:
626 kfree(data);
627 return retval;
628}
629
630static void bcm5974_irq_button(struct urb *urb)
631{
632 struct bcm5974 *dev = urb->context;
633 int error;
634
635 switch (urb->status) {
636 case 0:
637 break;
638 case -EOVERFLOW:
639 case -ECONNRESET:
640 case -ENOENT:
641 case -ESHUTDOWN:
642 dbg("bcm5974: button urb shutting down: %d", urb->status);
643 return;
644 default:
645 dbg("bcm5974: button urb status: %d", urb->status);
646 goto exit;
647 }
648
649 if (report_bt_state(dev, dev->bt_urb->actual_length))
650 dprintk(1, "bcm5974: bad button package, length: %d\n",
651 dev->bt_urb->actual_length);
652
653exit:
654 error = usb_submit_urb(dev->bt_urb, GFP_ATOMIC);
655 if (error)
656 err("bcm5974: button urb failed: %d", error);
657}
658
659static void bcm5974_irq_trackpad(struct urb *urb)
660{
661 struct bcm5974 *dev = urb->context;
662 int error;
663
664 switch (urb->status) {
665 case 0:
666 break;
667 case -EOVERFLOW:
668 case -ECONNRESET:
669 case -ENOENT:
670 case -ESHUTDOWN:
671 dbg("bcm5974: trackpad urb shutting down: %d", urb->status);
672 return;
673 default:
674 dbg("bcm5974: trackpad urb status: %d", urb->status);
675 goto exit;
676 }
677
678 /* control response ignored */
679 if (dev->tp_urb->actual_length == 2)
680 goto exit;
681
682 if (report_tp_state(dev, dev->tp_urb->actual_length))
683 dprintk(1, "bcm5974: bad trackpad package, length: %d\n",
684 dev->tp_urb->actual_length);
685
686exit:
687 error = usb_submit_urb(dev->tp_urb, GFP_ATOMIC);
688 if (error)
689 err("bcm5974: trackpad urb failed: %d", error);
690}
691
692/*
693 * The Wellspring trackpad, like many recent Apple trackpads, share
694 * the usb device with the keyboard. Since keyboards are usually
695 * handled by the HID system, the device ends up being handled by two
696 * modules. Setting up the device therefore becomes slightly
697 * complicated. To enable multitouch features, a mode switch is
698 * required, which is usually applied via the control interface of the
699 * device. It can be argued where this switch should take place. In
700 * some drivers, like appletouch, the switch is made during
701 * probe. However, the hid module may also alter the state of the
702 * device, resulting in trackpad malfunction under certain
703 * circumstances. To get around this problem, there is at least one
704 * example that utilizes the USB_QUIRK_RESET_RESUME quirk in order to
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300705 * receive a reset_resume request rather than the normal resume.
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400706 * Since the implementation of reset_resume is equal to mode switch
707 * plus start_traffic, it seems easier to always do the switch when
708 * starting traffic on the device.
709 */
710static int bcm5974_start_traffic(struct bcm5974 *dev)
711{
Luo Jinghua1719ec42010-06-08 01:01:48 -0700712 int error;
713
714 error = bcm5974_wellspring_mode(dev, true);
715 if (error) {
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400716 dprintk(1, "bcm5974: mode switch failed\n");
Luo Jinghua1719ec42010-06-08 01:01:48 -0700717 goto err_out;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400718 }
719
Luo Jinghua1719ec42010-06-08 01:01:48 -0700720 error = usb_submit_urb(dev->bt_urb, GFP_KERNEL);
721 if (error)
722 goto err_reset_mode;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400723
Luo Jinghua1719ec42010-06-08 01:01:48 -0700724 error = usb_submit_urb(dev->tp_urb, GFP_KERNEL);
725 if (error)
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400726 goto err_kill_bt;
727
728 return 0;
729
730err_kill_bt:
731 usb_kill_urb(dev->bt_urb);
Luo Jinghua1719ec42010-06-08 01:01:48 -0700732err_reset_mode:
733 bcm5974_wellspring_mode(dev, false);
734err_out:
735 return error;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400736}
737
738static void bcm5974_pause_traffic(struct bcm5974 *dev)
739{
740 usb_kill_urb(dev->tp_urb);
741 usb_kill_urb(dev->bt_urb);
Henrik Rydbergcd72ad32008-09-14 11:52:44 -0400742 bcm5974_wellspring_mode(dev, false);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400743}
744
745/*
746 * The code below implements open/close and manual suspend/resume.
747 * All functions may be called in random order.
748 *
749 * Opening a suspended device fails with EACCES - permission denied.
750 *
751 * Failing a resume leaves the device resumed but closed.
752 */
753static int bcm5974_open(struct input_dev *input)
754{
755 struct bcm5974 *dev = input_get_drvdata(input);
756 int error;
757
Dmitry Torokhov88da7652008-08-08 14:59:32 -0400758 error = usb_autopm_get_interface(dev->intf);
759 if (error)
760 return error;
761
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400762 mutex_lock(&dev->pm_mutex);
763
764 error = bcm5974_start_traffic(dev);
765 if (!error)
766 dev->opened = 1;
767
768 mutex_unlock(&dev->pm_mutex);
769
Dmitry Torokhov88da7652008-08-08 14:59:32 -0400770 if (error)
771 usb_autopm_put_interface(dev->intf);
772
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400773 return error;
774}
775
776static void bcm5974_close(struct input_dev *input)
777{
778 struct bcm5974 *dev = input_get_drvdata(input);
779
780 mutex_lock(&dev->pm_mutex);
781
782 bcm5974_pause_traffic(dev);
783 dev->opened = 0;
784
785 mutex_unlock(&dev->pm_mutex);
Dmitry Torokhov88da7652008-08-08 14:59:32 -0400786
787 usb_autopm_put_interface(dev->intf);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400788}
789
790static int bcm5974_suspend(struct usb_interface *iface, pm_message_t message)
791{
792 struct bcm5974 *dev = usb_get_intfdata(iface);
793
794 mutex_lock(&dev->pm_mutex);
795
796 if (dev->opened)
797 bcm5974_pause_traffic(dev);
798
799 mutex_unlock(&dev->pm_mutex);
800
801 return 0;
802}
803
804static int bcm5974_resume(struct usb_interface *iface)
805{
806 struct bcm5974 *dev = usb_get_intfdata(iface);
807 int error = 0;
808
809 mutex_lock(&dev->pm_mutex);
810
811 if (dev->opened)
812 error = bcm5974_start_traffic(dev);
813
814 mutex_unlock(&dev->pm_mutex);
815
816 return error;
817}
818
819static int bcm5974_probe(struct usb_interface *iface,
820 const struct usb_device_id *id)
821{
822 struct usb_device *udev = interface_to_usbdev(iface);
823 const struct bcm5974_config *cfg;
824 struct bcm5974 *dev;
825 struct input_dev *input_dev;
826 int error = -ENOMEM;
827
828 /* find the product index */
829 cfg = bcm5974_get_config(udev);
830
831 /* allocate memory for our device state and initialize it */
832 dev = kzalloc(sizeof(struct bcm5974), GFP_KERNEL);
833 input_dev = input_allocate_device();
834 if (!dev || !input_dev) {
835 err("bcm5974: out of memory");
836 goto err_free_devs;
837 }
838
839 dev->udev = udev;
Dmitry Torokhov88da7652008-08-08 14:59:32 -0400840 dev->intf = iface;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400841 dev->input = input_dev;
842 dev->cfg = *cfg;
843 mutex_init(&dev->pm_mutex);
844
845 /* setup urbs */
846 dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL);
847 if (!dev->bt_urb)
848 goto err_free_devs;
849
850 dev->tp_urb = usb_alloc_urb(0, GFP_KERNEL);
851 if (!dev->tp_urb)
852 goto err_free_bt_urb;
853
Daniel Mack997ea582010-04-12 13:17:25 +0200854 dev->bt_data = usb_alloc_coherent(dev->udev,
855 dev->cfg.bt_datalen, GFP_KERNEL,
856 &dev->bt_urb->transfer_dma);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400857 if (!dev->bt_data)
858 goto err_free_urb;
859
Daniel Mack997ea582010-04-12 13:17:25 +0200860 dev->tp_data = usb_alloc_coherent(dev->udev,
861 dev->cfg.tp_datalen, GFP_KERNEL,
862 &dev->tp_urb->transfer_dma);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400863 if (!dev->tp_data)
864 goto err_free_bt_buffer;
865
866 usb_fill_int_urb(dev->bt_urb, udev,
867 usb_rcvintpipe(udev, cfg->bt_ep),
868 dev->bt_data, dev->cfg.bt_datalen,
869 bcm5974_irq_button, dev, 1);
870
871 usb_fill_int_urb(dev->tp_urb, udev,
872 usb_rcvintpipe(udev, cfg->tp_ep),
873 dev->tp_data, dev->cfg.tp_datalen,
874 bcm5974_irq_trackpad, dev, 1);
875
876 /* create bcm5974 device */
877 usb_make_path(udev, dev->phys, sizeof(dev->phys));
878 strlcat(dev->phys, "/input0", sizeof(dev->phys));
879
880 input_dev->name = "bcm5974";
881 input_dev->phys = dev->phys;
882 usb_to_input_id(dev->udev, &input_dev->id);
Henrik Rydberg158e9282009-04-28 07:03:54 -0700883 /* report driver capabilities via the version field */
884 input_dev->id.version = cfg->caps;
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400885 input_dev->dev.parent = &iface->dev;
886
887 input_set_drvdata(input_dev, dev);
888
889 input_dev->open = bcm5974_open;
890 input_dev->close = bcm5974_close;
891
892 setup_events_to_report(input_dev, cfg);
893
894 error = input_register_device(dev->input);
895 if (error)
896 goto err_free_buffer;
897
898 /* save our data pointer in this interface device */
899 usb_set_intfdata(iface, dev);
900
901 return 0;
902
903err_free_buffer:
Daniel Mack997ea582010-04-12 13:17:25 +0200904 usb_free_coherent(dev->udev, dev->cfg.tp_datalen,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400905 dev->tp_data, dev->tp_urb->transfer_dma);
906err_free_bt_buffer:
Daniel Mack997ea582010-04-12 13:17:25 +0200907 usb_free_coherent(dev->udev, dev->cfg.bt_datalen,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400908 dev->bt_data, dev->bt_urb->transfer_dma);
909err_free_urb:
910 usb_free_urb(dev->tp_urb);
911err_free_bt_urb:
912 usb_free_urb(dev->bt_urb);
913err_free_devs:
914 usb_set_intfdata(iface, NULL);
915 input_free_device(input_dev);
916 kfree(dev);
917 return error;
918}
919
920static void bcm5974_disconnect(struct usb_interface *iface)
921{
922 struct bcm5974 *dev = usb_get_intfdata(iface);
923
924 usb_set_intfdata(iface, NULL);
925
926 input_unregister_device(dev->input);
Daniel Mack997ea582010-04-12 13:17:25 +0200927 usb_free_coherent(dev->udev, dev->cfg.tp_datalen,
928 dev->tp_data, dev->tp_urb->transfer_dma);
929 usb_free_coherent(dev->udev, dev->cfg.bt_datalen,
930 dev->bt_data, dev->bt_urb->transfer_dma);
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400931 usb_free_urb(dev->tp_urb);
932 usb_free_urb(dev->bt_urb);
933 kfree(dev);
934}
935
936static struct usb_driver bcm5974_driver = {
937 .name = "bcm5974",
938 .probe = bcm5974_probe,
939 .disconnect = bcm5974_disconnect,
940 .suspend = bcm5974_suspend,
941 .resume = bcm5974_resume,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400942 .id_table = bcm5974_table,
Dmitry Torokhov88da7652008-08-08 14:59:32 -0400943 .supports_autosuspend = 1,
Henrik Rydbergf89bd952008-08-08 14:59:30 -0400944};
945
Greg Kroah-Hartman08642e72011-11-18 09:48:31 -0800946module_usb_driver(bcm5974_driver);