Commit | Line | Data |
---|---|---|
74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f89bd95c HR |
2 | /* |
3 | * Apple USB BCM5974 (Macbook Air and Penryn Macbook Pro) multitouch driver | |
4 | * | |
5 | * Copyright (C) 2008 Henrik Rydberg (rydberg@euromail.se) | |
d5806926 | 6 | * Copyright (C) 2015 John Horan (knasher@gmail.com) |
f89bd95c HR |
7 | * |
8 | * The USB initialization and package decoding was made by | |
9 | * Scott Shawcroft as part of the touchd user-space driver project: | |
10 | * Copyright (C) 2008 Scott Shawcroft (scott.shawcroft@gmail.com) | |
11 | * | |
12 | * The BCM5974 driver is based on the appletouch driver: | |
13 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) | |
14 | * Copyright (C) 2005 Johannes Berg (johannes@sipsolutions.net) | |
15 | * Copyright (C) 2005 Stelian Pop (stelian@popies.net) | |
16 | * Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de) | |
17 | * Copyright (C) 2005 Peter Osterlund (petero2@telia.com) | |
18 | * Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch) | |
19 | * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch) | |
f89bd95c HR |
20 | */ |
21 | ||
22 | #include <linux/kernel.h> | |
23 | #include <linux/errno.h> | |
f89bd95c HR |
24 | #include <linux/slab.h> |
25 | #include <linux/module.h> | |
26 | #include <linux/usb/input.h> | |
27 | #include <linux/hid.h> | |
28 | #include <linux/mutex.h> | |
51c80b74 | 29 | #include <linux/input/mt.h> |
f89bd95c HR |
30 | |
31 | #define USB_VENDOR_ID_APPLE 0x05ac | |
32 | ||
33 | /* MacbookAir, aka wellspring */ | |
34 | #define USB_DEVICE_ID_APPLE_WELLSPRING_ANSI 0x0223 | |
35 | #define USB_DEVICE_ID_APPLE_WELLSPRING_ISO 0x0224 | |
36 | #define USB_DEVICE_ID_APPLE_WELLSPRING_JIS 0x0225 | |
37 | /* MacbookProPenryn, aka wellspring2 */ | |
38 | #define USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI 0x0230 | |
39 | #define USB_DEVICE_ID_APPLE_WELLSPRING2_ISO 0x0231 | |
40 | #define USB_DEVICE_ID_APPLE_WELLSPRING2_JIS 0x0232 | |
158e9287 HR |
41 | /* Macbook5,1 (unibody), aka wellspring3 */ |
42 | #define USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI 0x0236 | |
43 | #define USB_DEVICE_ID_APPLE_WELLSPRING3_ISO 0x0237 | |
44 | #define USB_DEVICE_ID_APPLE_WELLSPRING3_JIS 0x0238 | |
6021afcf EH |
45 | /* MacbookAir3,2 (unibody), aka wellspring5 */ |
46 | #define USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI 0x023f | |
47 | #define USB_DEVICE_ID_APPLE_WELLSPRING4_ISO 0x0240 | |
48 | #define USB_DEVICE_ID_APPLE_WELLSPRING4_JIS 0x0241 | |
49 | /* MacbookAir3,1 (unibody), aka wellspring4 */ | |
50 | #define USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI 0x0242 | |
51 | #define USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO 0x0243 | |
52 | #define USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS 0x0244 | |
47340bd9 AB |
53 | /* Macbook8 (unibody, March 2011) */ |
54 | #define USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI 0x0245 | |
55 | #define USB_DEVICE_ID_APPLE_WELLSPRING5_ISO 0x0246 | |
56 | #define USB_DEVICE_ID_APPLE_WELLSPRING5_JIS 0x0247 | |
1c601bea PAVM |
57 | /* MacbookAir4,1 (unibody, July 2011) */ |
58 | #define USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI 0x0249 | |
59 | #define USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO 0x024a | |
60 | #define USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS 0x024b | |
db0b34b0 JD |
61 | /* MacbookAir4,2 (unibody, July 2011) */ |
62 | #define USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI 0x024c | |
63 | #define USB_DEVICE_ID_APPLE_WELLSPRING6_ISO 0x024d | |
64 | #define USB_DEVICE_ID_APPLE_WELLSPRING6_JIS 0x024e | |
c331eb58 AD |
65 | /* Macbook8,2 (unibody) */ |
66 | #define USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI 0x0252 | |
67 | #define USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO 0x0253 | |
68 | #define USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS 0x0254 | |
3dde22a9 HR |
69 | /* MacbookPro10,1 (unibody, June 2012) */ |
70 | #define USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI 0x0262 | |
71 | #define USB_DEVICE_ID_APPLE_WELLSPRING7_ISO 0x0263 | |
72 | #define USB_DEVICE_ID_APPLE_WELLSPRING7_JIS 0x0264 | |
8d80da90 DH |
73 | /* MacbookPro10,2 (unibody, October 2012) */ |
74 | #define USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI 0x0259 | |
75 | #define USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO 0x025a | |
76 | #define USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS 0x025b | |
148c1c8a | 77 | /* MacbookAir6,2 (unibody, June 2013) */ |
8c89cc17 HR |
78 | #define USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI 0x0290 |
79 | #define USB_DEVICE_ID_APPLE_WELLSPRING8_ISO 0x0291 | |
80 | #define USB_DEVICE_ID_APPLE_WELLSPRING8_JIS 0x0292 | |
d5806926 JH |
81 | /* MacbookPro12,1 (2015) */ |
82 | #define USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI 0x0272 | |
83 | #define USB_DEVICE_ID_APPLE_WELLSPRING9_ISO 0x0273 | |
84 | #define USB_DEVICE_ID_APPLE_WELLSPRING9_JIS 0x0274 | |
f89bd95c HR |
85 | |
86 | #define BCM5974_DEVICE(prod) { \ | |
87 | .match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \ | |
88 | USB_DEVICE_ID_MATCH_INT_CLASS | \ | |
89 | USB_DEVICE_ID_MATCH_INT_PROTOCOL), \ | |
90 | .idVendor = USB_VENDOR_ID_APPLE, \ | |
91 | .idProduct = (prod), \ | |
92 | .bInterfaceClass = USB_INTERFACE_CLASS_HID, \ | |
93 | .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE \ | |
94 | } | |
95 | ||
96 | /* table of devices that work with this driver */ | |
158e0fb6 | 97 | static const struct usb_device_id bcm5974_table[] = { |
f89bd95c HR |
98 | /* MacbookAir1.1 */ |
99 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ANSI), | |
100 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ISO), | |
101 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_JIS), | |
102 | /* MacbookProPenryn */ | |
103 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI), | |
104 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ISO), | |
105 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_JIS), | |
158e9287 HR |
106 | /* Macbook5,1 */ |
107 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI), | |
108 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ISO), | |
109 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_JIS), | |
6021afcf EH |
110 | /* MacbookAir3,2 */ |
111 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI), | |
112 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_ISO), | |
113 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_JIS), | |
114 | /* MacbookAir3,1 */ | |
115 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI), | |
116 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO), | |
117 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS), | |
47340bd9 AB |
118 | /* MacbookPro8 */ |
119 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI), | |
120 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ISO), | |
121 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_JIS), | |
1c601bea PAVM |
122 | /* MacbookAir4,1 */ |
123 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI), | |
124 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO), | |
125 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS), | |
db0b34b0 JD |
126 | /* MacbookAir4,2 */ |
127 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI), | |
128 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ISO), | |
129 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_JIS), | |
c331eb58 AD |
130 | /* MacbookPro8,2 */ |
131 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI), | |
132 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO), | |
133 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS), | |
3dde22a9 HR |
134 | /* MacbookPro10,1 */ |
135 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI), | |
136 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7_ISO), | |
137 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7_JIS), | |
8d80da90 DH |
138 | /* MacbookPro10,2 */ |
139 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI), | |
140 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO), | |
141 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS), | |
148c1c8a DT |
142 | /* MacbookAir6,2 */ |
143 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI), | |
144 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_ISO), | |
145 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_JIS), | |
d5806926 JH |
146 | /* MacbookPro12,1 */ |
147 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI), | |
148 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_ISO), | |
149 | BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_JIS), | |
f89bd95c HR |
150 | /* Terminating entry */ |
151 | {} | |
152 | }; | |
153 | MODULE_DEVICE_TABLE(usb, bcm5974_table); | |
154 | ||
155 | MODULE_AUTHOR("Henrik Rydberg"); | |
156 | MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver"); | |
157 | MODULE_LICENSE("GPL"); | |
158 | ||
159 | #define dprintk(level, format, a...)\ | |
160 | { if (debug >= level) printk(KERN_DEBUG format, ##a); } | |
161 | ||
162 | static int debug = 1; | |
163 | module_param(debug, int, 0644); | |
164 | MODULE_PARM_DESC(debug, "Activate debugging output"); | |
165 | ||
166 | /* button data structure */ | |
167 | struct bt_data { | |
168 | u8 unknown1; /* constant */ | |
169 | u8 button; /* left button */ | |
170 | u8 rel_x; /* relative x coordinate */ | |
171 | u8 rel_y; /* relative y coordinate */ | |
172 | }; | |
173 | ||
9894cf0f HR |
174 | /* trackpad header types */ |
175 | enum tp_type { | |
158e9287 | 176 | TYPE1, /* plain trackpad */ |
148c1c8a | 177 | TYPE2, /* button integrated in trackpad */ |
d5806926 JH |
178 | TYPE3, /* additional header fields since June 2013 */ |
179 | TYPE4 /* additional header field for pressure data */ | |
f89bd95c HR |
180 | }; |
181 | ||
9894cf0f | 182 | /* trackpad finger data offsets, le16-aligned */ |
efbd3470 HR |
183 | #define HEADER_TYPE1 (13 * sizeof(__le16)) |
184 | #define HEADER_TYPE2 (15 * sizeof(__le16)) | |
185 | #define HEADER_TYPE3 (19 * sizeof(__le16)) | |
d5806926 | 186 | #define HEADER_TYPE4 (23 * sizeof(__le16)) |
158e9287 HR |
187 | |
188 | /* trackpad button data offsets */ | |
efbd3470 | 189 | #define BUTTON_TYPE1 0 |
158e9287 | 190 | #define BUTTON_TYPE2 15 |
148c1c8a | 191 | #define BUTTON_TYPE3 23 |
d5806926 | 192 | #define BUTTON_TYPE4 31 |
158e9287 HR |
193 | |
194 | /* list of device capability bits */ | |
195 | #define HAS_INTEGRATED_BUTTON 1 | |
9894cf0f | 196 | |
efbd3470 HR |
197 | /* trackpad finger data block size */ |
198 | #define FSIZE_TYPE1 (14 * sizeof(__le16)) | |
199 | #define FSIZE_TYPE2 (14 * sizeof(__le16)) | |
200 | #define FSIZE_TYPE3 (14 * sizeof(__le16)) | |
d5806926 | 201 | #define FSIZE_TYPE4 (15 * sizeof(__le16)) |
efbd3470 HR |
202 | |
203 | /* offset from header to finger struct */ | |
204 | #define DELTA_TYPE1 (0 * sizeof(__le16)) | |
205 | #define DELTA_TYPE2 (0 * sizeof(__le16)) | |
206 | #define DELTA_TYPE3 (0 * sizeof(__le16)) | |
d5806926 | 207 | #define DELTA_TYPE4 (1 * sizeof(__le16)) |
efbd3470 HR |
208 | |
209 | /* usb control message mode switch data */ | |
210 | #define USBMSG_TYPE1 8, 0x300, 0, 0, 0x1, 0x8 | |
211 | #define USBMSG_TYPE2 8, 0x300, 0, 0, 0x1, 0x8 | |
212 | #define USBMSG_TYPE3 8, 0x300, 0, 0, 0x1, 0x8 | |
d5806926 | 213 | #define USBMSG_TYPE4 2, 0x302, 2, 1, 0x1, 0x0 |
efbd3470 HR |
214 | |
215 | /* Wellspring initialization constants */ | |
216 | #define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID 1 | |
217 | #define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID 9 | |
218 | ||
9894cf0f | 219 | /* trackpad finger structure, le16-aligned */ |
f89bd95c | 220 | struct tp_finger { |
75e21e3f | 221 | __le16 origin; /* zero when switching track finger */ |
f89bd95c HR |
222 | __le16 abs_x; /* absolute x coodinate */ |
223 | __le16 abs_y; /* absolute y coodinate */ | |
224 | __le16 rel_x; /* relative x coodinate */ | |
225 | __le16 rel_y; /* relative y coodinate */ | |
f17953ab HR |
226 | __le16 tool_major; /* tool area, major axis */ |
227 | __le16 tool_minor; /* tool area, minor axis */ | |
f89bd95c | 228 | __le16 orientation; /* 16384 when point, else 15 bit angle */ |
f17953ab HR |
229 | __le16 touch_major; /* touch area, major axis */ |
230 | __le16 touch_minor; /* touch area, minor axis */ | |
d5806926 JH |
231 | __le16 unused[2]; /* zeros */ |
232 | __le16 pressure; /* pressure on forcetouch touchpad */ | |
f89bd95c | 233 | __le16 multi; /* one finger: varies, more fingers: constant */ |
9894cf0f | 234 | } __attribute__((packed,aligned(2))); |
f89bd95c | 235 | |
9894cf0f | 236 | /* trackpad finger data size, empirically at least ten fingers */ |
f17953ab | 237 | #define MAX_FINGERS 16 |
6f2701b7 | 238 | #define MAX_FINGER_ORIENTATION 16384 |
f89bd95c HR |
239 | |
240 | /* device-specific parameters */ | |
241 | struct bcm5974_param { | |
0e726966 HR |
242 | int snratio; /* signal-to-noise ratio */ |
243 | int min; /* device minimum reading */ | |
244 | int max; /* device maximum reading */ | |
f89bd95c HR |
245 | }; |
246 | ||
247 | /* device-specific configuration */ | |
248 | struct bcm5974_config { | |
249 | int ansi, iso, jis; /* the product id of this device */ | |
158e9287 | 250 | int caps; /* device capability bitmask */ |
f89bd95c HR |
251 | int bt_ep; /* the endpoint of the button interface */ |
252 | int bt_datalen; /* data length of the button interface */ | |
253 | int tp_ep; /* the endpoint of the trackpad interface */ | |
9894cf0f | 254 | enum tp_type tp_type; /* type of trackpad interface */ |
efbd3470 | 255 | int tp_header; /* bytes in header block */ |
f89bd95c | 256 | int tp_datalen; /* data length of the trackpad interface */ |
efbd3470 HR |
257 | int tp_button; /* offset to button data */ |
258 | int tp_fsize; /* bytes in single finger block */ | |
259 | int tp_delta; /* offset from header to finger struct */ | |
260 | int um_size; /* usb control message length */ | |
261 | int um_req_val; /* usb control message value */ | |
262 | int um_req_idx; /* usb control message index */ | |
263 | int um_switch_idx; /* usb control message mode switch index */ | |
264 | int um_switch_on; /* usb control message mode switch on */ | |
265 | int um_switch_off; /* usb control message mode switch off */ | |
f89bd95c HR |
266 | struct bcm5974_param p; /* finger pressure limits */ |
267 | struct bcm5974_param w; /* finger width limits */ | |
268 | struct bcm5974_param x; /* horizontal limits */ | |
269 | struct bcm5974_param y; /* vertical limits */ | |
0e726966 | 270 | struct bcm5974_param o; /* orientation limits */ |
f89bd95c HR |
271 | }; |
272 | ||
273 | /* logical device structure */ | |
274 | struct bcm5974 { | |
275 | char phys[64]; | |
276 | struct usb_device *udev; /* usb device */ | |
88da765f | 277 | struct usb_interface *intf; /* our interface */ |
f89bd95c HR |
278 | struct input_dev *input; /* input dev */ |
279 | struct bcm5974_config cfg; /* device configuration */ | |
280 | struct mutex pm_mutex; /* serialize access to open/suspend */ | |
281 | int opened; /* 1: opened, 0: closed */ | |
282 | struct urb *bt_urb; /* button usb request block */ | |
283 | struct bt_data *bt_data; /* button transferred data */ | |
284 | struct urb *tp_urb; /* trackpad usb request block */ | |
9894cf0f | 285 | u8 *tp_data; /* trackpad transferred data */ |
51c80b74 HR |
286 | const struct tp_finger *index[MAX_FINGERS]; /* finger index data */ |
287 | struct input_mt_pos pos[MAX_FINGERS]; /* position array */ | |
288 | int slots[MAX_FINGERS]; /* slot assignments */ | |
f89bd95c HR |
289 | }; |
290 | ||
efbd3470 HR |
291 | /* trackpad finger block data, le16-aligned */ |
292 | static const struct tp_finger *get_tp_finger(const struct bcm5974 *dev, int i) | |
293 | { | |
294 | const struct bcm5974_config *c = &dev->cfg; | |
295 | u8 *f_base = dev->tp_data + c->tp_header + c->tp_delta; | |
296 | ||
297 | return (const struct tp_finger *)(f_base + i * c->tp_fsize); | |
298 | } | |
299 | ||
300 | #define DATAFORMAT(type) \ | |
301 | type, \ | |
302 | HEADER_##type, \ | |
303 | HEADER_##type + (MAX_FINGERS) * (FSIZE_##type), \ | |
304 | BUTTON_##type, \ | |
305 | FSIZE_##type, \ | |
306 | DELTA_##type, \ | |
307 | USBMSG_##type | |
308 | ||
f89bd95c HR |
309 | /* logical signal quality */ |
310 | #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ | |
51c80b74 | 311 | #define SN_WIDTH 25 /* width signal-to-noise ratio */ |
f89bd95c | 312 | #define SN_COORD 250 /* coordinate signal-to-noise ratio */ |
0e726966 | 313 | #define SN_ORIENT 10 /* orientation signal-to-noise ratio */ |
75e21e3f | 314 | |
f89bd95c HR |
315 | /* device constants */ |
316 | static const struct bcm5974_config bcm5974_config_table[] = { | |
317 | { | |
318 | USB_DEVICE_ID_APPLE_WELLSPRING_ANSI, | |
319 | USB_DEVICE_ID_APPLE_WELLSPRING_ISO, | |
320 | USB_DEVICE_ID_APPLE_WELLSPRING_JIS, | |
158e9287 | 321 | 0, |
f89bd95c | 322 | 0x84, sizeof(struct bt_data), |
efbd3470 | 323 | 0x81, DATAFORMAT(TYPE1), |
0e726966 HR |
324 | { SN_PRESSURE, 0, 256 }, |
325 | { SN_WIDTH, 0, 2048 }, | |
326 | { SN_COORD, -4824, 5342 }, | |
327 | { SN_COORD, -172, 5820 }, | |
328 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
f89bd95c HR |
329 | }, |
330 | { | |
331 | USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI, | |
332 | USB_DEVICE_ID_APPLE_WELLSPRING2_ISO, | |
333 | USB_DEVICE_ID_APPLE_WELLSPRING2_JIS, | |
158e9287 | 334 | 0, |
f89bd95c | 335 | 0x84, sizeof(struct bt_data), |
efbd3470 | 336 | 0x81, DATAFORMAT(TYPE1), |
0e726966 HR |
337 | { SN_PRESSURE, 0, 256 }, |
338 | { SN_WIDTH, 0, 2048 }, | |
339 | { SN_COORD, -4824, 4824 }, | |
340 | { SN_COORD, -172, 4290 }, | |
341 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
f89bd95c | 342 | }, |
158e9287 HR |
343 | { |
344 | USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI, | |
345 | USB_DEVICE_ID_APPLE_WELLSPRING3_ISO, | |
346 | USB_DEVICE_ID_APPLE_WELLSPRING3_JIS, | |
347 | HAS_INTEGRATED_BUTTON, | |
348 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 349 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
350 | { SN_PRESSURE, 0, 300 }, |
351 | { SN_WIDTH, 0, 2048 }, | |
352 | { SN_COORD, -4460, 5166 }, | |
353 | { SN_COORD, -75, 6700 }, | |
354 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
158e9287 | 355 | }, |
6021afcf EH |
356 | { |
357 | USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI, | |
358 | USB_DEVICE_ID_APPLE_WELLSPRING4_ISO, | |
359 | USB_DEVICE_ID_APPLE_WELLSPRING4_JIS, | |
360 | HAS_INTEGRATED_BUTTON, | |
361 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 362 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
363 | { SN_PRESSURE, 0, 300 }, |
364 | { SN_WIDTH, 0, 2048 }, | |
365 | { SN_COORD, -4620, 5140 }, | |
366 | { SN_COORD, -150, 6600 }, | |
367 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
6021afcf EH |
368 | }, |
369 | { | |
370 | USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI, | |
371 | USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO, | |
372 | USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS, | |
373 | HAS_INTEGRATED_BUTTON, | |
374 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 375 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
376 | { SN_PRESSURE, 0, 300 }, |
377 | { SN_WIDTH, 0, 2048 }, | |
378 | { SN_COORD, -4616, 5112 }, | |
379 | { SN_COORD, -142, 5234 }, | |
380 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
6021afcf | 381 | }, |
47340bd9 AB |
382 | { |
383 | USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI, | |
384 | USB_DEVICE_ID_APPLE_WELLSPRING5_ISO, | |
385 | USB_DEVICE_ID_APPLE_WELLSPRING5_JIS, | |
386 | HAS_INTEGRATED_BUTTON, | |
387 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 388 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
389 | { SN_PRESSURE, 0, 300 }, |
390 | { SN_WIDTH, 0, 2048 }, | |
391 | { SN_COORD, -4415, 5050 }, | |
392 | { SN_COORD, -55, 6680 }, | |
393 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
47340bd9 | 394 | }, |
db0b34b0 JD |
395 | { |
396 | USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI, | |
397 | USB_DEVICE_ID_APPLE_WELLSPRING6_ISO, | |
398 | USB_DEVICE_ID_APPLE_WELLSPRING6_JIS, | |
399 | HAS_INTEGRATED_BUTTON, | |
400 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 401 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
402 | { SN_PRESSURE, 0, 300 }, |
403 | { SN_WIDTH, 0, 2048 }, | |
404 | { SN_COORD, -4620, 5140 }, | |
405 | { SN_COORD, -150, 6600 }, | |
406 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
db0b34b0 | 407 | }, |
c331eb58 AD |
408 | { |
409 | USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI, | |
410 | USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO, | |
411 | USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS, | |
412 | HAS_INTEGRATED_BUTTON, | |
413 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 414 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
415 | { SN_PRESSURE, 0, 300 }, |
416 | { SN_WIDTH, 0, 2048 }, | |
417 | { SN_COORD, -4750, 5280 }, | |
418 | { SN_COORD, -150, 6730 }, | |
419 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
c331eb58 | 420 | }, |
1c601bea PAVM |
421 | { |
422 | USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI, | |
423 | USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO, | |
424 | USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS, | |
425 | HAS_INTEGRATED_BUTTON, | |
426 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 427 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
428 | { SN_PRESSURE, 0, 300 }, |
429 | { SN_WIDTH, 0, 2048 }, | |
430 | { SN_COORD, -4620, 5140 }, | |
431 | { SN_COORD, -150, 6600 }, | |
432 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
1c601bea | 433 | }, |
3dde22a9 HR |
434 | { |
435 | USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI, | |
436 | USB_DEVICE_ID_APPLE_WELLSPRING7_ISO, | |
437 | USB_DEVICE_ID_APPLE_WELLSPRING7_JIS, | |
438 | HAS_INTEGRATED_BUTTON, | |
439 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 440 | 0x81, DATAFORMAT(TYPE2), |
0e726966 HR |
441 | { SN_PRESSURE, 0, 300 }, |
442 | { SN_WIDTH, 0, 2048 }, | |
443 | { SN_COORD, -4750, 5280 }, | |
444 | { SN_COORD, -150, 6730 }, | |
445 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
3dde22a9 | 446 | }, |
8d80da90 DH |
447 | { |
448 | USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI, | |
449 | USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO, | |
450 | USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS, | |
451 | HAS_INTEGRATED_BUTTON, | |
452 | 0x84, sizeof(struct bt_data), | |
efbd3470 | 453 | 0x81, DATAFORMAT(TYPE2), |
8d80da90 DH |
454 | { SN_PRESSURE, 0, 300 }, |
455 | { SN_WIDTH, 0, 2048 }, | |
456 | { SN_COORD, -4750, 5280 }, | |
457 | { SN_COORD, -150, 6730 }, | |
458 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
459 | }, | |
148c1c8a DT |
460 | { |
461 | USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI, | |
462 | USB_DEVICE_ID_APPLE_WELLSPRING8_ISO, | |
463 | USB_DEVICE_ID_APPLE_WELLSPRING8_JIS, | |
464 | HAS_INTEGRATED_BUTTON, | |
465 | 0, sizeof(struct bt_data), | |
efbd3470 | 466 | 0x83, DATAFORMAT(TYPE3), |
148c1c8a DT |
467 | { SN_PRESSURE, 0, 300 }, |
468 | { SN_WIDTH, 0, 2048 }, | |
469 | { SN_COORD, -4620, 5140 }, | |
470 | { SN_COORD, -150, 6600 }, | |
471 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
472 | }, | |
d5806926 JH |
473 | { |
474 | USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI, | |
475 | USB_DEVICE_ID_APPLE_WELLSPRING9_ISO, | |
476 | USB_DEVICE_ID_APPLE_WELLSPRING9_JIS, | |
477 | HAS_INTEGRATED_BUTTON, | |
478 | 0, sizeof(struct bt_data), | |
479 | 0x83, DATAFORMAT(TYPE4), | |
480 | { SN_PRESSURE, 0, 300 }, | |
481 | { SN_WIDTH, 0, 2048 }, | |
482 | { SN_COORD, -4828, 5345 }, | |
483 | { SN_COORD, -203, 6803 }, | |
484 | { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } | |
485 | }, | |
f89bd95c HR |
486 | {} |
487 | }; | |
488 | ||
489 | /* return the device-specific configuration by device */ | |
490 | static const struct bcm5974_config *bcm5974_get_config(struct usb_device *udev) | |
491 | { | |
492 | u16 id = le16_to_cpu(udev->descriptor.idProduct); | |
493 | const struct bcm5974_config *cfg; | |
494 | ||
495 | for (cfg = bcm5974_config_table; cfg->ansi; ++cfg) | |
496 | if (cfg->ansi == id || cfg->iso == id || cfg->jis == id) | |
497 | return cfg; | |
498 | ||
499 | return bcm5974_config_table; | |
500 | } | |
501 | ||
502 | /* convert 16-bit little endian to signed integer */ | |
503 | static inline int raw2int(__le16 x) | |
504 | { | |
505 | return (signed short)le16_to_cpu(x); | |
506 | } | |
507 | ||
0e726966 HR |
508 | static void set_abs(struct input_dev *input, unsigned int code, |
509 | const struct bcm5974_param *p) | |
f89bd95c | 510 | { |
0e726966 HR |
511 | int fuzz = p->snratio ? (p->max - p->min) / p->snratio : 0; |
512 | input_set_abs_params(input, code, p->min, p->max, fuzz, 0); | |
f89bd95c HR |
513 | } |
514 | ||
515 | /* setup which logical events to report */ | |
516 | static void setup_events_to_report(struct input_dev *input_dev, | |
517 | const struct bcm5974_config *cfg) | |
518 | { | |
519 | __set_bit(EV_ABS, input_dev->evbit); | |
520 | ||
0e726966 HR |
521 | /* for synaptics only */ |
522 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 256, 5, 0); | |
523 | input_set_abs_params(input_dev, ABS_TOOL_WIDTH, 0, 16, 0, 0); | |
524 | ||
6f2701b7 | 525 | /* finger touch area */ |
0e726966 HR |
526 | set_abs(input_dev, ABS_MT_TOUCH_MAJOR, &cfg->w); |
527 | set_abs(input_dev, ABS_MT_TOUCH_MINOR, &cfg->w); | |
6f2701b7 | 528 | /* finger approach area */ |
0e726966 HR |
529 | set_abs(input_dev, ABS_MT_WIDTH_MAJOR, &cfg->w); |
530 | set_abs(input_dev, ABS_MT_WIDTH_MINOR, &cfg->w); | |
6f2701b7 | 531 | /* finger orientation */ |
0e726966 | 532 | set_abs(input_dev, ABS_MT_ORIENTATION, &cfg->o); |
6f2701b7 | 533 | /* finger position */ |
0e726966 HR |
534 | set_abs(input_dev, ABS_MT_POSITION_X, &cfg->x); |
535 | set_abs(input_dev, ABS_MT_POSITION_Y, &cfg->y); | |
6f2701b7 | 536 | |
f89bd95c | 537 | __set_bit(EV_KEY, input_dev->evbit); |
f89bd95c | 538 | __set_bit(BTN_LEFT, input_dev->keybit); |
c13aea03 | 539 | |
52965cc0 JP |
540 | if (cfg->caps & HAS_INTEGRATED_BUTTON) |
541 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
542 | ||
51c80b74 HR |
543 | input_mt_init_slots(input_dev, MAX_FINGERS, |
544 | INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); | |
f89bd95c HR |
545 | } |
546 | ||
547 | /* report button data as logical button state */ | |
548 | static int report_bt_state(struct bcm5974 *dev, int size) | |
549 | { | |
550 | if (size != sizeof(struct bt_data)) | |
551 | return -EIO; | |
552 | ||
53402193 HR |
553 | dprintk(7, |
554 | "bcm5974: button data: %x %x %x %x\n", | |
555 | dev->bt_data->unknown1, dev->bt_data->button, | |
556 | dev->bt_data->rel_x, dev->bt_data->rel_y); | |
557 | ||
f89bd95c HR |
558 | input_report_key(dev->input, BTN_LEFT, dev->bt_data->button); |
559 | input_sync(dev->input); | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
51c80b74 HR |
564 | static void report_finger_data(struct input_dev *input, int slot, |
565 | const struct input_mt_pos *pos, | |
6f2701b7 HR |
566 | const struct tp_finger *f) |
567 | { | |
51c80b74 HR |
568 | input_mt_slot(input, slot); |
569 | input_mt_report_slot_state(input, MT_TOOL_FINGER, true); | |
570 | ||
57157bec | 571 | input_report_abs(input, ABS_MT_TOUCH_MAJOR, |
f17953ab | 572 | raw2int(f->touch_major) << 1); |
57157bec | 573 | input_report_abs(input, ABS_MT_TOUCH_MINOR, |
f17953ab | 574 | raw2int(f->touch_minor) << 1); |
57157bec | 575 | input_report_abs(input, ABS_MT_WIDTH_MAJOR, |
f17953ab | 576 | raw2int(f->tool_major) << 1); |
57157bec | 577 | input_report_abs(input, ABS_MT_WIDTH_MINOR, |
f17953ab | 578 | raw2int(f->tool_minor) << 1); |
6f2701b7 HR |
579 | input_report_abs(input, ABS_MT_ORIENTATION, |
580 | MAX_FINGER_ORIENTATION - raw2int(f->orientation)); | |
51c80b74 HR |
581 | input_report_abs(input, ABS_MT_POSITION_X, pos->x); |
582 | input_report_abs(input, ABS_MT_POSITION_Y, pos->y); | |
6f2701b7 HR |
583 | } |
584 | ||
0e726966 HR |
585 | static void report_synaptics_data(struct input_dev *input, |
586 | const struct bcm5974_config *cfg, | |
587 | const struct tp_finger *f, int raw_n) | |
588 | { | |
589 | int abs_p = 0, abs_w = 0; | |
590 | ||
591 | if (raw_n) { | |
592 | int p = raw2int(f->touch_major); | |
593 | int w = raw2int(f->tool_major); | |
594 | if (p > 0 && raw2int(f->origin)) { | |
595 | abs_p = clamp_val(256 * p / cfg->p.max, 0, 255); | |
596 | abs_w = clamp_val(16 * w / cfg->w.max, 0, 15); | |
597 | } | |
598 | } | |
599 | ||
600 | input_report_abs(input, ABS_PRESSURE, abs_p); | |
601 | input_report_abs(input, ABS_TOOL_WIDTH, abs_w); | |
602 | } | |
603 | ||
f89bd95c HR |
604 | /* report trackpad data as logical trackpad state */ |
605 | static int report_tp_state(struct bcm5974 *dev, int size) | |
606 | { | |
607 | const struct bcm5974_config *c = &dev->cfg; | |
9894cf0f | 608 | const struct tp_finger *f; |
f89bd95c | 609 | struct input_dev *input = dev->input; |
51c80b74 | 610 | int raw_n, i, n = 0; |
f89bd95c | 611 | |
efbd3470 | 612 | if (size < c->tp_header || (size - c->tp_header) % c->tp_fsize != 0) |
f89bd95c HR |
613 | return -EIO; |
614 | ||
efbd3470 | 615 | raw_n = (size - c->tp_header) / c->tp_fsize; |
9894cf0f | 616 | |
51c80b74 | 617 | for (i = 0; i < raw_n; i++) { |
efbd3470 HR |
618 | f = get_tp_finger(dev, i); |
619 | if (raw2int(f->touch_major) == 0) | |
51c80b74 | 620 | continue; |
efbd3470 HR |
621 | dev->pos[n].x = raw2int(f->abs_x); |
622 | dev->pos[n].y = c->y.min + c->y.max - raw2int(f->abs_y); | |
623 | dev->index[n++] = f; | |
f89bd95c HR |
624 | } |
625 | ||
448c7f38 | 626 | input_mt_assign_slots(input, dev->slots, dev->pos, n, 0); |
75e21e3f | 627 | |
51c80b74 HR |
628 | for (i = 0; i < n; i++) |
629 | report_finger_data(input, dev->slots[i], | |
630 | &dev->pos[i], dev->index[i]); | |
f89bd95c | 631 | |
51c80b74 HR |
632 | input_mt_sync_frame(input); |
633 | ||
efbd3470 | 634 | report_synaptics_data(input, c, get_tp_finger(dev, 0), raw_n); |
f89bd95c | 635 | |
efbd3470 HR |
636 | /* later types report button events via integrated button only */ |
637 | if (c->caps & HAS_INTEGRATED_BUTTON) { | |
638 | int ibt = raw2int(dev->tp_data[c->tp_button]); | |
158e9287 | 639 | input_report_key(input, BTN_LEFT, ibt); |
0e726966 | 640 | } |
158e9287 | 641 | |
f89bd95c HR |
642 | input_sync(input); |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
cd72ad3f | 647 | static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on) |
f89bd95c | 648 | { |
efbd3470 | 649 | const struct bcm5974_config *c = &dev->cfg; |
f89bd95c | 650 | int retval = 0, size; |
148c1c8a DT |
651 | char *data; |
652 | ||
653 | /* Type 3 does not require a mode switch */ | |
ad56814f | 654 | if (c->tp_type == TYPE3) |
148c1c8a | 655 | return 0; |
f89bd95c | 656 | |
efbd3470 | 657 | data = kmalloc(c->um_size, GFP_KERNEL); |
f89bd95c | 658 | if (!data) { |
ab943ca8 | 659 | dev_err(&dev->intf->dev, "out of memory\n"); |
f89bd95c HR |
660 | retval = -ENOMEM; |
661 | goto out; | |
662 | } | |
663 | ||
664 | /* read configuration */ | |
665 | size = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
666 | BCM5974_WELLSPRING_MODE_READ_REQUEST_ID, | |
667 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
efbd3470 | 668 | c->um_req_val, c->um_req_idx, data, c->um_size, 5000); |
f89bd95c | 669 | |
efbd3470 | 670 | if (size != c->um_size) { |
ab943ca8 | 671 | dev_err(&dev->intf->dev, "could not read from device\n"); |
f89bd95c HR |
672 | retval = -EIO; |
673 | goto out; | |
674 | } | |
675 | ||
676 | /* apply the mode switch */ | |
efbd3470 | 677 | data[c->um_switch_idx] = on ? c->um_switch_on : c->um_switch_off; |
f89bd95c HR |
678 | |
679 | /* write configuration */ | |
680 | size = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
681 | BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID, | |
682 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
efbd3470 | 683 | c->um_req_val, c->um_req_idx, data, c->um_size, 5000); |
f89bd95c | 684 | |
efbd3470 | 685 | if (size != c->um_size) { |
ab943ca8 | 686 | dev_err(&dev->intf->dev, "could not write to device\n"); |
f89bd95c HR |
687 | retval = -EIO; |
688 | goto out; | |
689 | } | |
690 | ||
cd72ad3f HR |
691 | dprintk(2, "bcm5974: switched to %s mode.\n", |
692 | on ? "wellspring" : "normal"); | |
f89bd95c HR |
693 | |
694 | out: | |
695 | kfree(data); | |
696 | return retval; | |
697 | } | |
698 | ||
699 | static void bcm5974_irq_button(struct urb *urb) | |
700 | { | |
701 | struct bcm5974 *dev = urb->context; | |
ab943ca8 | 702 | struct usb_interface *intf = dev->intf; |
f89bd95c HR |
703 | int error; |
704 | ||
705 | switch (urb->status) { | |
706 | case 0: | |
707 | break; | |
708 | case -EOVERFLOW: | |
709 | case -ECONNRESET: | |
710 | case -ENOENT: | |
711 | case -ESHUTDOWN: | |
ab943ca8 | 712 | dev_dbg(&intf->dev, "button urb shutting down: %d\n", |
bd028769 | 713 | urb->status); |
f89bd95c HR |
714 | return; |
715 | default: | |
ab943ca8 | 716 | dev_dbg(&intf->dev, "button urb status: %d\n", urb->status); |
f89bd95c HR |
717 | goto exit; |
718 | } | |
719 | ||
720 | if (report_bt_state(dev, dev->bt_urb->actual_length)) | |
721 | dprintk(1, "bcm5974: bad button package, length: %d\n", | |
722 | dev->bt_urb->actual_length); | |
723 | ||
724 | exit: | |
725 | error = usb_submit_urb(dev->bt_urb, GFP_ATOMIC); | |
726 | if (error) | |
ab943ca8 | 727 | dev_err(&intf->dev, "button urb failed: %d\n", error); |
f89bd95c HR |
728 | } |
729 | ||
730 | static void bcm5974_irq_trackpad(struct urb *urb) | |
731 | { | |
732 | struct bcm5974 *dev = urb->context; | |
ab943ca8 | 733 | struct usb_interface *intf = dev->intf; |
f89bd95c HR |
734 | int error; |
735 | ||
736 | switch (urb->status) { | |
737 | case 0: | |
738 | break; | |
739 | case -EOVERFLOW: | |
740 | case -ECONNRESET: | |
741 | case -ENOENT: | |
742 | case -ESHUTDOWN: | |
ab943ca8 | 743 | dev_dbg(&intf->dev, "trackpad urb shutting down: %d\n", |
bd028769 | 744 | urb->status); |
f89bd95c HR |
745 | return; |
746 | default: | |
ab943ca8 | 747 | dev_dbg(&intf->dev, "trackpad urb status: %d\n", urb->status); |
f89bd95c HR |
748 | goto exit; |
749 | } | |
750 | ||
751 | /* control response ignored */ | |
752 | if (dev->tp_urb->actual_length == 2) | |
753 | goto exit; | |
754 | ||
755 | if (report_tp_state(dev, dev->tp_urb->actual_length)) | |
756 | dprintk(1, "bcm5974: bad trackpad package, length: %d\n", | |
757 | dev->tp_urb->actual_length); | |
758 | ||
759 | exit: | |
760 | error = usb_submit_urb(dev->tp_urb, GFP_ATOMIC); | |
761 | if (error) | |
ab943ca8 | 762 | dev_err(&intf->dev, "trackpad urb failed: %d\n", error); |
f89bd95c HR |
763 | } |
764 | ||
765 | /* | |
766 | * The Wellspring trackpad, like many recent Apple trackpads, share | |
767 | * the usb device with the keyboard. Since keyboards are usually | |
768 | * handled by the HID system, the device ends up being handled by two | |
769 | * modules. Setting up the device therefore becomes slightly | |
770 | * complicated. To enable multitouch features, a mode switch is | |
771 | * required, which is usually applied via the control interface of the | |
772 | * device. It can be argued where this switch should take place. In | |
773 | * some drivers, like appletouch, the switch is made during | |
774 | * probe. However, the hid module may also alter the state of the | |
775 | * device, resulting in trackpad malfunction under certain | |
776 | * circumstances. To get around this problem, there is at least one | |
777 | * example that utilizes the USB_QUIRK_RESET_RESUME quirk in order to | |
25985edc | 778 | * receive a reset_resume request rather than the normal resume. |
f89bd95c HR |
779 | * Since the implementation of reset_resume is equal to mode switch |
780 | * plus start_traffic, it seems easier to always do the switch when | |
781 | * starting traffic on the device. | |
782 | */ | |
783 | static int bcm5974_start_traffic(struct bcm5974 *dev) | |
784 | { | |
1719ec41 LJ |
785 | int error; |
786 | ||
787 | error = bcm5974_wellspring_mode(dev, true); | |
788 | if (error) { | |
f89bd95c | 789 | dprintk(1, "bcm5974: mode switch failed\n"); |
1719ec41 | 790 | goto err_out; |
f89bd95c HR |
791 | } |
792 | ||
43f482b4 HR |
793 | if (dev->bt_urb) { |
794 | error = usb_submit_urb(dev->bt_urb, GFP_KERNEL); | |
795 | if (error) | |
796 | goto err_reset_mode; | |
797 | } | |
f89bd95c | 798 | |
1719ec41 LJ |
799 | error = usb_submit_urb(dev->tp_urb, GFP_KERNEL); |
800 | if (error) | |
f89bd95c HR |
801 | goto err_kill_bt; |
802 | ||
803 | return 0; | |
804 | ||
805 | err_kill_bt: | |
806 | usb_kill_urb(dev->bt_urb); | |
1719ec41 LJ |
807 | err_reset_mode: |
808 | bcm5974_wellspring_mode(dev, false); | |
809 | err_out: | |
810 | return error; | |
f89bd95c HR |
811 | } |
812 | ||
813 | static void bcm5974_pause_traffic(struct bcm5974 *dev) | |
814 | { | |
815 | usb_kill_urb(dev->tp_urb); | |
816 | usb_kill_urb(dev->bt_urb); | |
cd72ad3f | 817 | bcm5974_wellspring_mode(dev, false); |
f89bd95c HR |
818 | } |
819 | ||
820 | /* | |
821 | * The code below implements open/close and manual suspend/resume. | |
822 | * All functions may be called in random order. | |
823 | * | |
824 | * Opening a suspended device fails with EACCES - permission denied. | |
825 | * | |
826 | * Failing a resume leaves the device resumed but closed. | |
827 | */ | |
828 | static int bcm5974_open(struct input_dev *input) | |
829 | { | |
830 | struct bcm5974 *dev = input_get_drvdata(input); | |
831 | int error; | |
832 | ||
88da765f DT |
833 | error = usb_autopm_get_interface(dev->intf); |
834 | if (error) | |
835 | return error; | |
836 | ||
f89bd95c HR |
837 | mutex_lock(&dev->pm_mutex); |
838 | ||
839 | error = bcm5974_start_traffic(dev); | |
840 | if (!error) | |
841 | dev->opened = 1; | |
842 | ||
843 | mutex_unlock(&dev->pm_mutex); | |
844 | ||
88da765f DT |
845 | if (error) |
846 | usb_autopm_put_interface(dev->intf); | |
847 | ||
f89bd95c HR |
848 | return error; |
849 | } | |
850 | ||
851 | static void bcm5974_close(struct input_dev *input) | |
852 | { | |
853 | struct bcm5974 *dev = input_get_drvdata(input); | |
854 | ||
855 | mutex_lock(&dev->pm_mutex); | |
856 | ||
857 | bcm5974_pause_traffic(dev); | |
858 | dev->opened = 0; | |
859 | ||
860 | mutex_unlock(&dev->pm_mutex); | |
88da765f DT |
861 | |
862 | usb_autopm_put_interface(dev->intf); | |
f89bd95c HR |
863 | } |
864 | ||
865 | static int bcm5974_suspend(struct usb_interface *iface, pm_message_t message) | |
866 | { | |
867 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
868 | ||
869 | mutex_lock(&dev->pm_mutex); | |
870 | ||
871 | if (dev->opened) | |
872 | bcm5974_pause_traffic(dev); | |
873 | ||
874 | mutex_unlock(&dev->pm_mutex); | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | static int bcm5974_resume(struct usb_interface *iface) | |
880 | { | |
881 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
882 | int error = 0; | |
883 | ||
884 | mutex_lock(&dev->pm_mutex); | |
885 | ||
886 | if (dev->opened) | |
887 | error = bcm5974_start_traffic(dev); | |
888 | ||
889 | mutex_unlock(&dev->pm_mutex); | |
890 | ||
891 | return error; | |
892 | } | |
893 | ||
894 | static int bcm5974_probe(struct usb_interface *iface, | |
895 | const struct usb_device_id *id) | |
896 | { | |
897 | struct usb_device *udev = interface_to_usbdev(iface); | |
898 | const struct bcm5974_config *cfg; | |
899 | struct bcm5974 *dev; | |
900 | struct input_dev *input_dev; | |
901 | int error = -ENOMEM; | |
902 | ||
903 | /* find the product index */ | |
904 | cfg = bcm5974_get_config(udev); | |
905 | ||
906 | /* allocate memory for our device state and initialize it */ | |
907 | dev = kzalloc(sizeof(struct bcm5974), GFP_KERNEL); | |
908 | input_dev = input_allocate_device(); | |
909 | if (!dev || !input_dev) { | |
6c1d1b24 | 910 | dev_err(&iface->dev, "out of memory\n"); |
f89bd95c HR |
911 | goto err_free_devs; |
912 | } | |
913 | ||
914 | dev->udev = udev; | |
88da765f | 915 | dev->intf = iface; |
f89bd95c HR |
916 | dev->input = input_dev; |
917 | dev->cfg = *cfg; | |
918 | mutex_init(&dev->pm_mutex); | |
919 | ||
920 | /* setup urbs */ | |
43f482b4 HR |
921 | if (cfg->tp_type == TYPE1) { |
922 | dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL); | |
923 | if (!dev->bt_urb) | |
924 | goto err_free_devs; | |
925 | } | |
f89bd95c HR |
926 | |
927 | dev->tp_urb = usb_alloc_urb(0, GFP_KERNEL); | |
928 | if (!dev->tp_urb) | |
929 | goto err_free_bt_urb; | |
930 | ||
43f482b4 HR |
931 | if (dev->bt_urb) { |
932 | dev->bt_data = usb_alloc_coherent(dev->udev, | |
997ea58e DM |
933 | dev->cfg.bt_datalen, GFP_KERNEL, |
934 | &dev->bt_urb->transfer_dma); | |
43f482b4 HR |
935 | if (!dev->bt_data) |
936 | goto err_free_urb; | |
937 | } | |
f89bd95c | 938 | |
997ea58e DM |
939 | dev->tp_data = usb_alloc_coherent(dev->udev, |
940 | dev->cfg.tp_datalen, GFP_KERNEL, | |
941 | &dev->tp_urb->transfer_dma); | |
f89bd95c HR |
942 | if (!dev->tp_data) |
943 | goto err_free_bt_buffer; | |
944 | ||
43f482b4 HR |
945 | if (dev->bt_urb) |
946 | usb_fill_int_urb(dev->bt_urb, udev, | |
947 | usb_rcvintpipe(udev, cfg->bt_ep), | |
948 | dev->bt_data, dev->cfg.bt_datalen, | |
949 | bcm5974_irq_button, dev, 1); | |
f89bd95c HR |
950 | |
951 | usb_fill_int_urb(dev->tp_urb, udev, | |
952 | usb_rcvintpipe(udev, cfg->tp_ep), | |
953 | dev->tp_data, dev->cfg.tp_datalen, | |
954 | bcm5974_irq_trackpad, dev, 1); | |
955 | ||
956 | /* create bcm5974 device */ | |
957 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); | |
958 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
959 | ||
960 | input_dev->name = "bcm5974"; | |
961 | input_dev->phys = dev->phys; | |
962 | usb_to_input_id(dev->udev, &input_dev->id); | |
158e9287 HR |
963 | /* report driver capabilities via the version field */ |
964 | input_dev->id.version = cfg->caps; | |
f89bd95c HR |
965 | input_dev->dev.parent = &iface->dev; |
966 | ||
967 | input_set_drvdata(input_dev, dev); | |
968 | ||
969 | input_dev->open = bcm5974_open; | |
970 | input_dev->close = bcm5974_close; | |
971 | ||
972 | setup_events_to_report(input_dev, cfg); | |
973 | ||
974 | error = input_register_device(dev->input); | |
975 | if (error) | |
976 | goto err_free_buffer; | |
977 | ||
978 | /* save our data pointer in this interface device */ | |
979 | usb_set_intfdata(iface, dev); | |
980 | ||
981 | return 0; | |
982 | ||
983 | err_free_buffer: | |
997ea58e | 984 | usb_free_coherent(dev->udev, dev->cfg.tp_datalen, |
f89bd95c HR |
985 | dev->tp_data, dev->tp_urb->transfer_dma); |
986 | err_free_bt_buffer: | |
43f482b4 HR |
987 | if (dev->bt_urb) |
988 | usb_free_coherent(dev->udev, dev->cfg.bt_datalen, | |
989 | dev->bt_data, dev->bt_urb->transfer_dma); | |
f89bd95c HR |
990 | err_free_urb: |
991 | usb_free_urb(dev->tp_urb); | |
992 | err_free_bt_urb: | |
993 | usb_free_urb(dev->bt_urb); | |
994 | err_free_devs: | |
995 | usb_set_intfdata(iface, NULL); | |
996 | input_free_device(input_dev); | |
997 | kfree(dev); | |
998 | return error; | |
999 | } | |
1000 | ||
1001 | static void bcm5974_disconnect(struct usb_interface *iface) | |
1002 | { | |
1003 | struct bcm5974 *dev = usb_get_intfdata(iface); | |
1004 | ||
1005 | usb_set_intfdata(iface, NULL); | |
1006 | ||
1007 | input_unregister_device(dev->input); | |
997ea58e DM |
1008 | usb_free_coherent(dev->udev, dev->cfg.tp_datalen, |
1009 | dev->tp_data, dev->tp_urb->transfer_dma); | |
43f482b4 HR |
1010 | if (dev->bt_urb) |
1011 | usb_free_coherent(dev->udev, dev->cfg.bt_datalen, | |
1012 | dev->bt_data, dev->bt_urb->transfer_dma); | |
f89bd95c HR |
1013 | usb_free_urb(dev->tp_urb); |
1014 | usb_free_urb(dev->bt_urb); | |
1015 | kfree(dev); | |
1016 | } | |
1017 | ||
1018 | static struct usb_driver bcm5974_driver = { | |
1019 | .name = "bcm5974", | |
1020 | .probe = bcm5974_probe, | |
1021 | .disconnect = bcm5974_disconnect, | |
1022 | .suspend = bcm5974_suspend, | |
1023 | .resume = bcm5974_resume, | |
f89bd95c | 1024 | .id_table = bcm5974_table, |
88da765f | 1025 | .supports_autosuspend = 1, |
f89bd95c HR |
1026 | }; |
1027 | ||
08642e7c | 1028 | module_usb_driver(bcm5974_driver); |