Commit | Line | Data |
---|---|---|
2f31c525 BT |
1 | /* |
2 | * HIDPP protocol for Logitech Unifying receivers | |
3 | * | |
4 | * Copyright (c) 2011 Logitech (c) | |
5 | * Copyright (c) 2012-2013 Google (c) | |
6 | * Copyright (c) 2013-2014 Red Hat Inc. | |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the Free | |
12 | * Software Foundation; version 2 of the License. | |
13 | */ | |
14 | ||
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
16 | ||
17 | #include <linux/device.h> | |
18 | #include <linux/hid.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/sched.h> | |
22 | #include <linux/kfifo.h> | |
23 | #include <linux/input/mt.h> | |
24 | #include <asm/unaligned.h> | |
25 | #include "hid-ids.h" | |
26 | ||
27 | MODULE_LICENSE("GPL"); | |
28 | MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); | |
29 | MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>"); | |
30 | ||
9188dbae BT |
31 | static bool disable_raw_mode; |
32 | module_param(disable_raw_mode, bool, 0644); | |
33 | MODULE_PARM_DESC(disable_raw_mode, | |
34 | "Disable Raw mode reporting for touchpads and keep firmware gestures."); | |
35 | ||
2f31c525 BT |
36 | #define REPORT_ID_HIDPP_SHORT 0x10 |
37 | #define REPORT_ID_HIDPP_LONG 0x11 | |
38 | ||
39 | #define HIDPP_REPORT_SHORT_LENGTH 7 | |
40 | #define HIDPP_REPORT_LONG_LENGTH 20 | |
41 | ||
42 | #define HIDPP_QUIRK_CLASS_WTP BIT(0) | |
43 | ||
c39e3d5f BT |
44 | /* bits 1..20 are reserved for classes */ |
45 | #define HIDPP_QUIRK_DELAYED_INIT BIT(21) | |
57ac86cf | 46 | #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22) |
c39e3d5f | 47 | |
2f31c525 BT |
48 | /* |
49 | * There are two hidpp protocols in use, the first version hidpp10 is known | |
50 | * as register access protocol or RAP, the second version hidpp20 is known as | |
51 | * feature access protocol or FAP | |
52 | * | |
53 | * Most older devices (including the Unifying usb receiver) use the RAP protocol | |
54 | * where as most newer devices use the FAP protocol. Both protocols are | |
55 | * compatible with the underlying transport, which could be usb, Unifiying, or | |
56 | * bluetooth. The message lengths are defined by the hid vendor specific report | |
57 | * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and | |
58 | * the HIDPP_LONG report type (total message length 20 bytes) | |
59 | * | |
60 | * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG | |
61 | * messages. The Unifying receiver itself responds to RAP messages (device index | |
62 | * is 0xFF for the receiver), and all messages (short or long) with a device | |
63 | * index between 1 and 6 are passed untouched to the corresponding paired | |
64 | * Unifying device. | |
65 | * | |
66 | * The paired device can be RAP or FAP, it will receive the message untouched | |
67 | * from the Unifiying receiver. | |
68 | */ | |
69 | ||
70 | struct fap { | |
71 | u8 feature_index; | |
72 | u8 funcindex_clientid; | |
73 | u8 params[HIDPP_REPORT_LONG_LENGTH - 4U]; | |
74 | }; | |
75 | ||
76 | struct rap { | |
77 | u8 sub_id; | |
78 | u8 reg_address; | |
79 | u8 params[HIDPP_REPORT_LONG_LENGTH - 4U]; | |
80 | }; | |
81 | ||
82 | struct hidpp_report { | |
83 | u8 report_id; | |
84 | u8 device_index; | |
85 | union { | |
86 | struct fap fap; | |
87 | struct rap rap; | |
88 | u8 rawbytes[sizeof(struct fap)]; | |
89 | }; | |
90 | } __packed; | |
91 | ||
92 | struct hidpp_device { | |
93 | struct hid_device *hid_dev; | |
94 | struct mutex send_mutex; | |
95 | void *send_receive_buf; | |
005b3f57 | 96 | char *name; /* will never be NULL and should not be freed */ |
2f31c525 BT |
97 | wait_queue_head_t wait; |
98 | bool answer_available; | |
99 | u8 protocol_major; | |
100 | u8 protocol_minor; | |
101 | ||
102 | void *private_data; | |
103 | ||
c39e3d5f BT |
104 | struct work_struct work; |
105 | struct kfifo delayed_work_fifo; | |
106 | atomic_t connected; | |
107 | struct input_dev *delayed_input; | |
108 | ||
2f31c525 BT |
109 | unsigned long quirks; |
110 | }; | |
111 | ||
112 | ||
f677bb15 | 113 | /* HID++ 1.0 error codes */ |
2f31c525 BT |
114 | #define HIDPP_ERROR 0x8f |
115 | #define HIDPP_ERROR_SUCCESS 0x00 | |
116 | #define HIDPP_ERROR_INVALID_SUBID 0x01 | |
117 | #define HIDPP_ERROR_INVALID_ADRESS 0x02 | |
118 | #define HIDPP_ERROR_INVALID_VALUE 0x03 | |
119 | #define HIDPP_ERROR_CONNECT_FAIL 0x04 | |
120 | #define HIDPP_ERROR_TOO_MANY_DEVICES 0x05 | |
121 | #define HIDPP_ERROR_ALREADY_EXISTS 0x06 | |
122 | #define HIDPP_ERROR_BUSY 0x07 | |
123 | #define HIDPP_ERROR_UNKNOWN_DEVICE 0x08 | |
124 | #define HIDPP_ERROR_RESOURCE_ERROR 0x09 | |
125 | #define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a | |
126 | #define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b | |
127 | #define HIDPP_ERROR_WRONG_PIN_CODE 0x0c | |
f677bb15 PW |
128 | /* HID++ 2.0 error codes */ |
129 | #define HIDPP20_ERROR 0xff | |
2f31c525 | 130 | |
c39e3d5f BT |
131 | static void hidpp_connect_event(struct hidpp_device *hidpp_dev); |
132 | ||
2f31c525 BT |
133 | static int __hidpp_send_report(struct hid_device *hdev, |
134 | struct hidpp_report *hidpp_report) | |
135 | { | |
136 | int fields_count, ret; | |
137 | ||
138 | switch (hidpp_report->report_id) { | |
139 | case REPORT_ID_HIDPP_SHORT: | |
140 | fields_count = HIDPP_REPORT_SHORT_LENGTH; | |
141 | break; | |
142 | case REPORT_ID_HIDPP_LONG: | |
143 | fields_count = HIDPP_REPORT_LONG_LENGTH; | |
144 | break; | |
145 | default: | |
146 | return -ENODEV; | |
147 | } | |
148 | ||
149 | /* | |
150 | * set the device_index as the receiver, it will be overwritten by | |
151 | * hid_hw_request if needed | |
152 | */ | |
153 | hidpp_report->device_index = 0xff; | |
154 | ||
155 | ret = hid_hw_raw_request(hdev, hidpp_report->report_id, | |
156 | (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT, | |
157 | HID_REQ_SET_REPORT); | |
158 | ||
159 | return ret == fields_count ? 0 : -1; | |
160 | } | |
161 | ||
8c9952b2 BT |
162 | /** |
163 | * hidpp_send_message_sync() returns 0 in case of success, and something else | |
164 | * in case of a failure. | |
165 | * - If ' something else' is positive, that means that an error has been raised | |
166 | * by the protocol itself. | |
167 | * - If ' something else' is negative, that means that we had a classic error | |
168 | * (-ENOMEM, -EPIPE, etc...) | |
169 | */ | |
2f31c525 BT |
170 | static int hidpp_send_message_sync(struct hidpp_device *hidpp, |
171 | struct hidpp_report *message, | |
172 | struct hidpp_report *response) | |
173 | { | |
174 | int ret; | |
175 | ||
176 | mutex_lock(&hidpp->send_mutex); | |
177 | ||
178 | hidpp->send_receive_buf = response; | |
179 | hidpp->answer_available = false; | |
180 | ||
181 | /* | |
182 | * So that we can later validate the answer when it arrives | |
183 | * in hidpp_raw_event | |
184 | */ | |
185 | *response = *message; | |
186 | ||
187 | ret = __hidpp_send_report(hidpp->hid_dev, message); | |
188 | ||
189 | if (ret) { | |
190 | dbg_hid("__hidpp_send_report returned err: %d\n", ret); | |
191 | memset(response, 0, sizeof(struct hidpp_report)); | |
192 | goto exit; | |
193 | } | |
194 | ||
195 | if (!wait_event_timeout(hidpp->wait, hidpp->answer_available, | |
196 | 5*HZ)) { | |
197 | dbg_hid("%s:timeout waiting for response\n", __func__); | |
198 | memset(response, 0, sizeof(struct hidpp_report)); | |
199 | ret = -ETIMEDOUT; | |
200 | } | |
201 | ||
202 | if (response->report_id == REPORT_ID_HIDPP_SHORT && | |
f677bb15 PW |
203 | response->rap.sub_id == HIDPP_ERROR) { |
204 | ret = response->rap.params[1]; | |
205 | dbg_hid("%s:got hidpp error %02X\n", __func__, ret); | |
206 | goto exit; | |
207 | } | |
208 | ||
209 | if (response->report_id == REPORT_ID_HIDPP_LONG && | |
210 | response->fap.feature_index == HIDPP20_ERROR) { | |
2f31c525 | 211 | ret = response->fap.params[1]; |
f677bb15 | 212 | dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret); |
2f31c525 BT |
213 | goto exit; |
214 | } | |
215 | ||
216 | exit: | |
217 | mutex_unlock(&hidpp->send_mutex); | |
218 | return ret; | |
219 | ||
220 | } | |
221 | ||
222 | static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp, | |
223 | u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count, | |
224 | struct hidpp_report *response) | |
225 | { | |
3e7830ce | 226 | struct hidpp_report *message; |
2f31c525 BT |
227 | int ret; |
228 | ||
229 | if (param_count > sizeof(message->fap.params)) | |
230 | return -EINVAL; | |
231 | ||
3e7830ce DC |
232 | message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); |
233 | if (!message) | |
234 | return -ENOMEM; | |
2f31c525 BT |
235 | message->report_id = REPORT_ID_HIDPP_LONG; |
236 | message->fap.feature_index = feat_index; | |
237 | message->fap.funcindex_clientid = funcindex_clientid; | |
238 | memcpy(&message->fap.params, params, param_count); | |
239 | ||
240 | ret = hidpp_send_message_sync(hidpp, message, response); | |
241 | kfree(message); | |
242 | return ret; | |
243 | } | |
244 | ||
33797820 BT |
245 | static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev, |
246 | u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count, | |
247 | struct hidpp_report *response) | |
248 | { | |
3e7830ce | 249 | struct hidpp_report *message; |
33797820 BT |
250 | int ret; |
251 | ||
252 | if ((report_id != REPORT_ID_HIDPP_SHORT) && | |
253 | (report_id != REPORT_ID_HIDPP_LONG)) | |
254 | return -EINVAL; | |
255 | ||
256 | if (param_count > sizeof(message->rap.params)) | |
257 | return -EINVAL; | |
258 | ||
3e7830ce DC |
259 | message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); |
260 | if (!message) | |
261 | return -ENOMEM; | |
33797820 BT |
262 | message->report_id = report_id; |
263 | message->rap.sub_id = sub_id; | |
264 | message->rap.reg_address = reg_address; | |
265 | memcpy(&message->rap.params, params, param_count); | |
266 | ||
267 | ret = hidpp_send_message_sync(hidpp_dev, message, response); | |
268 | kfree(message); | |
269 | return ret; | |
270 | } | |
271 | ||
c39e3d5f BT |
272 | static void delayed_work_cb(struct work_struct *work) |
273 | { | |
274 | struct hidpp_device *hidpp = container_of(work, struct hidpp_device, | |
275 | work); | |
276 | hidpp_connect_event(hidpp); | |
277 | } | |
278 | ||
2f31c525 BT |
279 | static inline bool hidpp_match_answer(struct hidpp_report *question, |
280 | struct hidpp_report *answer) | |
281 | { | |
282 | return (answer->fap.feature_index == question->fap.feature_index) && | |
283 | (answer->fap.funcindex_clientid == question->fap.funcindex_clientid); | |
284 | } | |
285 | ||
286 | static inline bool hidpp_match_error(struct hidpp_report *question, | |
287 | struct hidpp_report *answer) | |
288 | { | |
f677bb15 PW |
289 | return ((answer->rap.sub_id == HIDPP_ERROR) || |
290 | (answer->fap.feature_index == HIDPP20_ERROR)) && | |
2f31c525 BT |
291 | (answer->fap.funcindex_clientid == question->fap.feature_index) && |
292 | (answer->fap.params[0] == question->fap.funcindex_clientid); | |
293 | } | |
294 | ||
c39e3d5f BT |
295 | static inline bool hidpp_report_is_connect_event(struct hidpp_report *report) |
296 | { | |
297 | return (report->report_id == REPORT_ID_HIDPP_SHORT) && | |
298 | (report->rap.sub_id == 0x41); | |
299 | } | |
300 | ||
a0e625f8 BT |
301 | /** |
302 | * hidpp_prefix_name() prefixes the current given name with "Logitech ". | |
303 | */ | |
304 | static void hidpp_prefix_name(char **name, int name_length) | |
305 | { | |
306 | #define PREFIX_LENGTH 9 /* "Logitech " */ | |
307 | ||
308 | int new_length; | |
309 | char *new_name; | |
310 | ||
311 | if (name_length > PREFIX_LENGTH && | |
312 | strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0) | |
313 | /* The prefix has is already in the name */ | |
314 | return; | |
315 | ||
316 | new_length = PREFIX_LENGTH + name_length; | |
317 | new_name = kzalloc(new_length, GFP_KERNEL); | |
318 | if (!new_name) | |
319 | return; | |
320 | ||
321 | snprintf(new_name, new_length, "Logitech %s", *name); | |
322 | ||
323 | kfree(*name); | |
324 | ||
325 | *name = new_name; | |
326 | } | |
327 | ||
33797820 BT |
328 | /* -------------------------------------------------------------------------- */ |
329 | /* HIDP++ 1.0 commands */ | |
330 | /* -------------------------------------------------------------------------- */ | |
331 | ||
332 | #define HIDPP_SET_REGISTER 0x80 | |
333 | #define HIDPP_GET_REGISTER 0x81 | |
334 | #define HIDPP_SET_LONG_REGISTER 0x82 | |
335 | #define HIDPP_GET_LONG_REGISTER 0x83 | |
336 | ||
337 | #define HIDPP_REG_PAIRING_INFORMATION 0xB5 | |
338 | #define DEVICE_NAME 0x40 | |
339 | ||
340 | static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev) | |
341 | { | |
342 | struct hidpp_report response; | |
343 | int ret; | |
344 | /* hid-logitech-dj is in charge of setting the right device index */ | |
345 | u8 params[1] = { DEVICE_NAME }; | |
346 | char *name; | |
347 | int len; | |
348 | ||
349 | ret = hidpp_send_rap_command_sync(hidpp_dev, | |
350 | REPORT_ID_HIDPP_SHORT, | |
351 | HIDPP_GET_LONG_REGISTER, | |
352 | HIDPP_REG_PAIRING_INFORMATION, | |
353 | params, 1, &response); | |
354 | if (ret) | |
355 | return NULL; | |
356 | ||
357 | len = response.rap.params[1]; | |
358 | ||
3a034a7a PW |
359 | if (2 + len > sizeof(response.rap.params)) |
360 | return NULL; | |
361 | ||
33797820 BT |
362 | name = kzalloc(len + 1, GFP_KERNEL); |
363 | if (!name) | |
364 | return NULL; | |
365 | ||
366 | memcpy(name, &response.rap.params[2], len); | |
a0e625f8 BT |
367 | |
368 | /* include the terminating '\0' */ | |
369 | hidpp_prefix_name(&name, len + 1); | |
370 | ||
33797820 BT |
371 | return name; |
372 | } | |
373 | ||
2f31c525 BT |
374 | /* -------------------------------------------------------------------------- */ |
375 | /* 0x0000: Root */ | |
376 | /* -------------------------------------------------------------------------- */ | |
377 | ||
378 | #define HIDPP_PAGE_ROOT 0x0000 | |
379 | #define HIDPP_PAGE_ROOT_IDX 0x00 | |
380 | ||
381 | #define CMD_ROOT_GET_FEATURE 0x01 | |
382 | #define CMD_ROOT_GET_PROTOCOL_VERSION 0x11 | |
383 | ||
384 | static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature, | |
385 | u8 *feature_index, u8 *feature_type) | |
386 | { | |
387 | struct hidpp_report response; | |
388 | int ret; | |
389 | u8 params[2] = { feature >> 8, feature & 0x00FF }; | |
390 | ||
391 | ret = hidpp_send_fap_command_sync(hidpp, | |
392 | HIDPP_PAGE_ROOT_IDX, | |
393 | CMD_ROOT_GET_FEATURE, | |
394 | params, 2, &response); | |
395 | if (ret) | |
396 | return ret; | |
397 | ||
398 | *feature_index = response.fap.params[0]; | |
399 | *feature_type = response.fap.params[1]; | |
400 | ||
401 | return ret; | |
402 | } | |
403 | ||
404 | static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp) | |
405 | { | |
406 | struct hidpp_report response; | |
407 | int ret; | |
408 | ||
409 | ret = hidpp_send_fap_command_sync(hidpp, | |
410 | HIDPP_PAGE_ROOT_IDX, | |
411 | CMD_ROOT_GET_PROTOCOL_VERSION, | |
412 | NULL, 0, &response); | |
413 | ||
552f12eb | 414 | if (ret == HIDPP_ERROR_INVALID_SUBID) { |
2f31c525 BT |
415 | hidpp->protocol_major = 1; |
416 | hidpp->protocol_minor = 0; | |
417 | return 0; | |
418 | } | |
419 | ||
552f12eb BT |
420 | /* the device might not be connected */ |
421 | if (ret == HIDPP_ERROR_RESOURCE_ERROR) | |
422 | return -EIO; | |
423 | ||
8c9952b2 BT |
424 | if (ret > 0) { |
425 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
426 | __func__, ret); | |
427 | return -EPROTO; | |
428 | } | |
2f31c525 | 429 | if (ret) |
8c9952b2 | 430 | return ret; |
2f31c525 BT |
431 | |
432 | hidpp->protocol_major = response.fap.params[0]; | |
433 | hidpp->protocol_minor = response.fap.params[1]; | |
434 | ||
435 | return ret; | |
436 | } | |
437 | ||
438 | static bool hidpp_is_connected(struct hidpp_device *hidpp) | |
439 | { | |
440 | int ret; | |
441 | ||
442 | ret = hidpp_root_get_protocol_version(hidpp); | |
443 | if (!ret) | |
444 | hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n", | |
445 | hidpp->protocol_major, hidpp->protocol_minor); | |
446 | return ret == 0; | |
447 | } | |
448 | ||
449 | /* -------------------------------------------------------------------------- */ | |
450 | /* 0x0005: GetDeviceNameType */ | |
451 | /* -------------------------------------------------------------------------- */ | |
452 | ||
453 | #define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005 | |
454 | ||
455 | #define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x01 | |
456 | #define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x11 | |
457 | #define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x21 | |
458 | ||
459 | static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp, | |
460 | u8 feature_index, u8 *nameLength) | |
461 | { | |
462 | struct hidpp_report response; | |
463 | int ret; | |
464 | ||
465 | ret = hidpp_send_fap_command_sync(hidpp, feature_index, | |
466 | CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response); | |
467 | ||
8c9952b2 BT |
468 | if (ret > 0) { |
469 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
470 | __func__, ret); | |
471 | return -EPROTO; | |
472 | } | |
2f31c525 | 473 | if (ret) |
8c9952b2 | 474 | return ret; |
2f31c525 BT |
475 | |
476 | *nameLength = response.fap.params[0]; | |
477 | ||
478 | return ret; | |
479 | } | |
480 | ||
481 | static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp, | |
482 | u8 feature_index, u8 char_index, char *device_name, int len_buf) | |
483 | { | |
484 | struct hidpp_report response; | |
485 | int ret, i; | |
486 | int count; | |
487 | ||
488 | ret = hidpp_send_fap_command_sync(hidpp, feature_index, | |
489 | CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1, | |
490 | &response); | |
491 | ||
8c9952b2 BT |
492 | if (ret > 0) { |
493 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
494 | __func__, ret); | |
495 | return -EPROTO; | |
496 | } | |
2f31c525 | 497 | if (ret) |
8c9952b2 | 498 | return ret; |
2f31c525 BT |
499 | |
500 | if (response.report_id == REPORT_ID_HIDPP_LONG) | |
501 | count = HIDPP_REPORT_LONG_LENGTH - 4; | |
502 | else | |
503 | count = HIDPP_REPORT_SHORT_LENGTH - 4; | |
504 | ||
505 | if (len_buf < count) | |
506 | count = len_buf; | |
507 | ||
508 | for (i = 0; i < count; i++) | |
509 | device_name[i] = response.fap.params[i]; | |
510 | ||
511 | return count; | |
512 | } | |
513 | ||
02cc097e | 514 | static char *hidpp_get_device_name(struct hidpp_device *hidpp) |
2f31c525 BT |
515 | { |
516 | u8 feature_type; | |
517 | u8 feature_index; | |
518 | u8 __name_length; | |
519 | char *name; | |
520 | unsigned index = 0; | |
521 | int ret; | |
522 | ||
523 | ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE, | |
524 | &feature_index, &feature_type); | |
525 | if (ret) | |
02cc097e | 526 | return NULL; |
2f31c525 BT |
527 | |
528 | ret = hidpp_devicenametype_get_count(hidpp, feature_index, | |
529 | &__name_length); | |
530 | if (ret) | |
02cc097e | 531 | return NULL; |
2f31c525 BT |
532 | |
533 | name = kzalloc(__name_length + 1, GFP_KERNEL); | |
534 | if (!name) | |
02cc097e | 535 | return NULL; |
2f31c525 | 536 | |
1430ee73 PW |
537 | while (index < __name_length) { |
538 | ret = hidpp_devicenametype_get_device_name(hidpp, | |
2f31c525 BT |
539 | feature_index, index, name + index, |
540 | __name_length - index); | |
1430ee73 PW |
541 | if (ret <= 0) { |
542 | kfree(name); | |
543 | return NULL; | |
544 | } | |
545 | index += ret; | |
546 | } | |
2f31c525 | 547 | |
a0e625f8 BT |
548 | /* include the terminating '\0' */ |
549 | hidpp_prefix_name(&name, __name_length + 1); | |
550 | ||
2f31c525 | 551 | return name; |
2f31c525 BT |
552 | } |
553 | ||
554 | /* -------------------------------------------------------------------------- */ | |
555 | /* 0x6100: TouchPadRawXY */ | |
556 | /* -------------------------------------------------------------------------- */ | |
557 | ||
558 | #define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100 | |
559 | ||
560 | #define CMD_TOUCHPAD_GET_RAW_INFO 0x01 | |
586bdc4e BT |
561 | #define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21 |
562 | ||
563 | #define EVENT_TOUCHPAD_RAW_XY 0x00 | |
2f31c525 BT |
564 | |
565 | #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01 | |
566 | #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03 | |
567 | ||
568 | struct hidpp_touchpad_raw_info { | |
569 | u16 x_size; | |
570 | u16 y_size; | |
571 | u8 z_range; | |
572 | u8 area_range; | |
573 | u8 timestamp_unit; | |
574 | u8 maxcontacts; | |
575 | u8 origin; | |
576 | u16 res; | |
577 | }; | |
578 | ||
579 | struct hidpp_touchpad_raw_xy_finger { | |
580 | u8 contact_type; | |
581 | u8 contact_status; | |
582 | u16 x; | |
583 | u16 y; | |
584 | u8 z; | |
585 | u8 area; | |
586 | u8 finger_id; | |
587 | }; | |
588 | ||
589 | struct hidpp_touchpad_raw_xy { | |
590 | u16 timestamp; | |
591 | struct hidpp_touchpad_raw_xy_finger fingers[2]; | |
592 | u8 spurious_flag; | |
593 | u8 end_of_frame; | |
594 | u8 finger_count; | |
595 | u8 button; | |
596 | }; | |
597 | ||
598 | static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp, | |
599 | u8 feature_index, struct hidpp_touchpad_raw_info *raw_info) | |
600 | { | |
601 | struct hidpp_report response; | |
602 | int ret; | |
603 | u8 *params = (u8 *)response.fap.params; | |
604 | ||
605 | ret = hidpp_send_fap_command_sync(hidpp, feature_index, | |
606 | CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response); | |
607 | ||
8c9952b2 BT |
608 | if (ret > 0) { |
609 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
610 | __func__, ret); | |
611 | return -EPROTO; | |
612 | } | |
2f31c525 | 613 | if (ret) |
8c9952b2 | 614 | return ret; |
2f31c525 BT |
615 | |
616 | raw_info->x_size = get_unaligned_be16(¶ms[0]); | |
617 | raw_info->y_size = get_unaligned_be16(¶ms[2]); | |
618 | raw_info->z_range = params[4]; | |
619 | raw_info->area_range = params[5]; | |
620 | raw_info->maxcontacts = params[7]; | |
621 | raw_info->origin = params[8]; | |
622 | /* res is given in unit per inch */ | |
623 | raw_info->res = get_unaligned_be16(¶ms[13]) * 2 / 51; | |
624 | ||
625 | return ret; | |
626 | } | |
627 | ||
586bdc4e BT |
628 | static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev, |
629 | u8 feature_index, bool send_raw_reports, | |
630 | bool sensor_enhanced_settings) | |
631 | { | |
632 | struct hidpp_report response; | |
633 | ||
634 | /* | |
635 | * Params: | |
636 | * bit 0 - enable raw | |
637 | * bit 1 - 16bit Z, no area | |
638 | * bit 2 - enhanced sensitivity | |
639 | * bit 3 - width, height (4 bits each) instead of area | |
640 | * bit 4 - send raw + gestures (degrades smoothness) | |
641 | * remaining bits - reserved | |
642 | */ | |
643 | u8 params = send_raw_reports | (sensor_enhanced_settings << 2); | |
644 | ||
645 | return hidpp_send_fap_command_sync(hidpp_dev, feature_index, | |
646 | CMD_TOUCHPAD_SET_RAW_REPORT_STATE, ¶ms, 1, &response); | |
647 | } | |
648 | ||
649 | static void hidpp_touchpad_touch_event(u8 *data, | |
650 | struct hidpp_touchpad_raw_xy_finger *finger) | |
651 | { | |
652 | u8 x_m = data[0] << 2; | |
653 | u8 y_m = data[2] << 2; | |
654 | ||
655 | finger->x = x_m << 6 | data[1]; | |
656 | finger->y = y_m << 6 | data[3]; | |
657 | ||
658 | finger->contact_type = data[0] >> 6; | |
659 | finger->contact_status = data[2] >> 6; | |
660 | ||
661 | finger->z = data[4]; | |
662 | finger->area = data[5]; | |
663 | finger->finger_id = data[6] >> 4; | |
664 | } | |
665 | ||
666 | static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev, | |
667 | u8 *data, struct hidpp_touchpad_raw_xy *raw_xy) | |
668 | { | |
669 | memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy)); | |
670 | raw_xy->end_of_frame = data[8] & 0x01; | |
671 | raw_xy->spurious_flag = (data[8] >> 1) & 0x01; | |
672 | raw_xy->finger_count = data[15] & 0x0f; | |
673 | raw_xy->button = (data[8] >> 2) & 0x01; | |
674 | ||
675 | if (raw_xy->finger_count) { | |
676 | hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]); | |
677 | hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]); | |
678 | } | |
679 | } | |
680 | ||
2f31c525 BT |
681 | /* ************************************************************************** */ |
682 | /* */ | |
683 | /* Device Support */ | |
684 | /* */ | |
685 | /* ************************************************************************** */ | |
686 | ||
687 | /* -------------------------------------------------------------------------- */ | |
688 | /* Touchpad HID++ devices */ | |
689 | /* -------------------------------------------------------------------------- */ | |
690 | ||
57ac86cf BT |
691 | #define WTP_MANUAL_RESOLUTION 39 |
692 | ||
2f31c525 BT |
693 | struct wtp_data { |
694 | struct input_dev *input; | |
695 | u16 x_size, y_size; | |
696 | u8 finger_count; | |
697 | u8 mt_feature_index; | |
698 | u8 button_feature_index; | |
699 | u8 maxcontacts; | |
700 | bool flip_y; | |
701 | unsigned int resolution; | |
702 | }; | |
703 | ||
704 | static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
705 | struct hid_field *field, struct hid_usage *usage, | |
706 | unsigned long **bit, int *max) | |
707 | { | |
708 | return -1; | |
709 | } | |
710 | ||
c39e3d5f BT |
711 | static void wtp_populate_input(struct hidpp_device *hidpp, |
712 | struct input_dev *input_dev, bool origin_is_hid_core) | |
2f31c525 | 713 | { |
2f31c525 | 714 | struct wtp_data *wd = hidpp->private_data; |
2f31c525 BT |
715 | |
716 | __set_bit(EV_ABS, input_dev->evbit); | |
717 | __set_bit(EV_KEY, input_dev->evbit); | |
718 | __clear_bit(EV_REL, input_dev->evbit); | |
719 | __clear_bit(EV_LED, input_dev->evbit); | |
720 | ||
721 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0); | |
722 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution); | |
723 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0); | |
724 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution); | |
725 | ||
726 | /* Max pressure is not given by the devices, pick one */ | |
727 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0); | |
728 | ||
729 | input_set_capability(input_dev, EV_KEY, BTN_LEFT); | |
730 | ||
57ac86cf BT |
731 | if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) |
732 | input_set_capability(input_dev, EV_KEY, BTN_RIGHT); | |
733 | else | |
734 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
2f31c525 BT |
735 | |
736 | input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER | | |
737 | INPUT_MT_DROP_UNUSED); | |
738 | ||
739 | wd->input = input_dev; | |
740 | } | |
741 | ||
742 | static void wtp_touch_event(struct wtp_data *wd, | |
743 | struct hidpp_touchpad_raw_xy_finger *touch_report) | |
744 | { | |
745 | int slot; | |
746 | ||
747 | if (!touch_report->finger_id || touch_report->contact_type) | |
748 | /* no actual data */ | |
749 | return; | |
750 | ||
751 | slot = input_mt_get_slot_by_key(wd->input, touch_report->finger_id); | |
752 | ||
753 | input_mt_slot(wd->input, slot); | |
754 | input_mt_report_slot_state(wd->input, MT_TOOL_FINGER, | |
755 | touch_report->contact_status); | |
756 | if (touch_report->contact_status) { | |
757 | input_event(wd->input, EV_ABS, ABS_MT_POSITION_X, | |
758 | touch_report->x); | |
759 | input_event(wd->input, EV_ABS, ABS_MT_POSITION_Y, | |
760 | wd->flip_y ? wd->y_size - touch_report->y : | |
761 | touch_report->y); | |
762 | input_event(wd->input, EV_ABS, ABS_MT_PRESSURE, | |
763 | touch_report->area); | |
764 | } | |
765 | } | |
766 | ||
767 | static void wtp_send_raw_xy_event(struct hidpp_device *hidpp, | |
768 | struct hidpp_touchpad_raw_xy *raw) | |
769 | { | |
770 | struct wtp_data *wd = hidpp->private_data; | |
771 | int i; | |
772 | ||
773 | for (i = 0; i < 2; i++) | |
774 | wtp_touch_event(wd, &(raw->fingers[i])); | |
775 | ||
57ac86cf BT |
776 | if (raw->end_of_frame && |
777 | !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)) | |
2f31c525 BT |
778 | input_event(wd->input, EV_KEY, BTN_LEFT, raw->button); |
779 | ||
780 | if (raw->end_of_frame || raw->finger_count <= 2) { | |
781 | input_mt_sync_frame(wd->input); | |
782 | input_sync(wd->input); | |
783 | } | |
784 | } | |
785 | ||
786 | static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data) | |
787 | { | |
788 | struct wtp_data *wd = hidpp->private_data; | |
789 | u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) + | |
790 | (data[7] >> 4) * (data[7] >> 4)) / 2; | |
791 | u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) + | |
792 | (data[13] >> 4) * (data[13] >> 4)) / 2; | |
793 | struct hidpp_touchpad_raw_xy raw = { | |
794 | .timestamp = data[1], | |
795 | .fingers = { | |
796 | { | |
797 | .contact_type = 0, | |
798 | .contact_status = !!data[7], | |
799 | .x = get_unaligned_le16(&data[3]), | |
800 | .y = get_unaligned_le16(&data[5]), | |
801 | .z = c1_area, | |
802 | .area = c1_area, | |
803 | .finger_id = data[2], | |
804 | }, { | |
805 | .contact_type = 0, | |
806 | .contact_status = !!data[13], | |
807 | .x = get_unaligned_le16(&data[9]), | |
808 | .y = get_unaligned_le16(&data[11]), | |
809 | .z = c2_area, | |
810 | .area = c2_area, | |
811 | .finger_id = data[8], | |
812 | } | |
813 | }, | |
814 | .finger_count = wd->maxcontacts, | |
815 | .spurious_flag = 0, | |
816 | .end_of_frame = (data[0] >> 7) == 0, | |
817 | .button = data[0] & 0x01, | |
818 | }; | |
819 | ||
820 | wtp_send_raw_xy_event(hidpp, &raw); | |
821 | ||
822 | return 1; | |
823 | } | |
824 | ||
825 | static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) | |
826 | { | |
827 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
828 | struct wtp_data *wd = hidpp->private_data; | |
586bdc4e BT |
829 | struct hidpp_report *report = (struct hidpp_report *)data; |
830 | struct hidpp_touchpad_raw_xy raw; | |
2f31c525 | 831 | |
586bdc4e | 832 | if (!wd || !wd->input) |
2f31c525 BT |
833 | return 1; |
834 | ||
586bdc4e BT |
835 | switch (data[0]) { |
836 | case 0x02: | |
0b3f6569 PW |
837 | if (size < 2) { |
838 | hid_err(hdev, "Received HID report of bad size (%d)", | |
839 | size); | |
840 | return 1; | |
841 | } | |
57ac86cf BT |
842 | if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) { |
843 | input_event(wd->input, EV_KEY, BTN_LEFT, | |
844 | !!(data[1] & 0x01)); | |
845 | input_event(wd->input, EV_KEY, BTN_RIGHT, | |
846 | !!(data[1] & 0x02)); | |
847 | input_sync(wd->input); | |
8abd8205 | 848 | return 0; |
57ac86cf BT |
849 | } else { |
850 | if (size < 21) | |
851 | return 1; | |
852 | return wtp_mouse_raw_xy_event(hidpp, &data[7]); | |
853 | } | |
586bdc4e | 854 | case REPORT_ID_HIDPP_LONG: |
0b3f6569 | 855 | /* size is already checked in hidpp_raw_event. */ |
586bdc4e BT |
856 | if ((report->fap.feature_index != wd->mt_feature_index) || |
857 | (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY)) | |
858 | return 1; | |
859 | hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw); | |
860 | ||
861 | wtp_send_raw_xy_event(hidpp, &raw); | |
862 | return 0; | |
863 | } | |
864 | ||
865 | return 0; | |
2f31c525 BT |
866 | } |
867 | ||
868 | static int wtp_get_config(struct hidpp_device *hidpp) | |
869 | { | |
870 | struct wtp_data *wd = hidpp->private_data; | |
871 | struct hidpp_touchpad_raw_info raw_info = {0}; | |
872 | u8 feature_type; | |
873 | int ret; | |
874 | ||
875 | ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY, | |
876 | &wd->mt_feature_index, &feature_type); | |
877 | if (ret) | |
878 | /* means that the device is not powered up */ | |
879 | return ret; | |
880 | ||
881 | ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index, | |
882 | &raw_info); | |
883 | if (ret) | |
884 | return ret; | |
885 | ||
886 | wd->x_size = raw_info.x_size; | |
887 | wd->y_size = raw_info.y_size; | |
888 | wd->maxcontacts = raw_info.maxcontacts; | |
889 | wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT; | |
890 | wd->resolution = raw_info.res; | |
57ac86cf BT |
891 | if (!wd->resolution) |
892 | wd->resolution = WTP_MANUAL_RESOLUTION; | |
2f31c525 BT |
893 | |
894 | return 0; | |
895 | } | |
896 | ||
897 | static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id) | |
898 | { | |
899 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
900 | struct wtp_data *wd; | |
901 | ||
902 | wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data), | |
903 | GFP_KERNEL); | |
904 | if (!wd) | |
905 | return -ENOMEM; | |
906 | ||
907 | hidpp->private_data = wd; | |
908 | ||
909 | return 0; | |
910 | }; | |
911 | ||
bf159447 | 912 | static int wtp_connect(struct hid_device *hdev, bool connected) |
586bdc4e BT |
913 | { |
914 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
915 | struct wtp_data *wd = hidpp->private_data; | |
916 | int ret; | |
917 | ||
918 | if (!connected) | |
bf159447 | 919 | return 0; |
586bdc4e BT |
920 | |
921 | if (!wd->x_size) { | |
922 | ret = wtp_get_config(hidpp); | |
923 | if (ret) { | |
924 | hid_err(hdev, "Can not get wtp config: %d\n", ret); | |
bf159447 | 925 | return ret; |
586bdc4e BT |
926 | } |
927 | } | |
928 | ||
bf159447 | 929 | return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index, |
586bdc4e BT |
930 | true, true); |
931 | } | |
932 | ||
2f31c525 BT |
933 | /* -------------------------------------------------------------------------- */ |
934 | /* Generic HID++ devices */ | |
935 | /* -------------------------------------------------------------------------- */ | |
936 | ||
937 | static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
938 | struct hid_field *field, struct hid_usage *usage, | |
939 | unsigned long **bit, int *max) | |
940 | { | |
941 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
942 | ||
943 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) | |
944 | return wtp_input_mapping(hdev, hi, field, usage, bit, max); | |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
c39e3d5f BT |
949 | static void hidpp_populate_input(struct hidpp_device *hidpp, |
950 | struct input_dev *input, bool origin_is_hid_core) | |
951 | { | |
952 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) | |
953 | wtp_populate_input(hidpp, input, origin_is_hid_core); | |
954 | } | |
955 | ||
2f31c525 BT |
956 | static void hidpp_input_configured(struct hid_device *hdev, |
957 | struct hid_input *hidinput) | |
958 | { | |
959 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
c39e3d5f | 960 | struct input_dev *input = hidinput->input; |
2f31c525 | 961 | |
c39e3d5f | 962 | hidpp_populate_input(hidpp, input, true); |
2f31c525 BT |
963 | } |
964 | ||
965 | static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, | |
966 | int size) | |
967 | { | |
968 | struct hidpp_report *question = hidpp->send_receive_buf; | |
969 | struct hidpp_report *answer = hidpp->send_receive_buf; | |
970 | struct hidpp_report *report = (struct hidpp_report *)data; | |
971 | ||
972 | /* | |
973 | * If the mutex is locked then we have a pending answer from a | |
e529fea9 | 974 | * previously sent command. |
2f31c525 BT |
975 | */ |
976 | if (unlikely(mutex_is_locked(&hidpp->send_mutex))) { | |
977 | /* | |
978 | * Check for a correct hidpp20 answer or the corresponding | |
979 | * error | |
980 | */ | |
981 | if (hidpp_match_answer(question, report) || | |
982 | hidpp_match_error(question, report)) { | |
983 | *answer = *report; | |
984 | hidpp->answer_available = true; | |
985 | wake_up(&hidpp->wait); | |
986 | /* | |
987 | * This was an answer to a command that this driver sent | |
988 | * We return 1 to hid-core to avoid forwarding the | |
989 | * command upstream as it has been treated by the driver | |
990 | */ | |
991 | ||
992 | return 1; | |
993 | } | |
994 | } | |
995 | ||
c39e3d5f BT |
996 | if (unlikely(hidpp_report_is_connect_event(report))) { |
997 | atomic_set(&hidpp->connected, | |
998 | !(report->rap.params[0] & (1 << 6))); | |
999 | if ((hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) && | |
1000 | (schedule_work(&hidpp->work) == 0)) | |
1001 | dbg_hid("%s: connect event already queued\n", __func__); | |
1002 | return 1; | |
1003 | } | |
1004 | ||
2f31c525 BT |
1005 | return 0; |
1006 | } | |
1007 | ||
1008 | static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report, | |
1009 | u8 *data, int size) | |
1010 | { | |
1011 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
e529fea9 | 1012 | int ret = 0; |
2f31c525 | 1013 | |
e529fea9 | 1014 | /* Generic HID++ processing. */ |
2f31c525 BT |
1015 | switch (data[0]) { |
1016 | case REPORT_ID_HIDPP_LONG: | |
1017 | if (size != HIDPP_REPORT_LONG_LENGTH) { | |
1018 | hid_err(hdev, "received hid++ report of bad size (%d)", | |
1019 | size); | |
1020 | return 1; | |
1021 | } | |
e529fea9 PW |
1022 | ret = hidpp_raw_hidpp_event(hidpp, data, size); |
1023 | break; | |
2f31c525 BT |
1024 | case REPORT_ID_HIDPP_SHORT: |
1025 | if (size != HIDPP_REPORT_SHORT_LENGTH) { | |
1026 | hid_err(hdev, "received hid++ report of bad size (%d)", | |
1027 | size); | |
1028 | return 1; | |
1029 | } | |
e529fea9 PW |
1030 | ret = hidpp_raw_hidpp_event(hidpp, data, size); |
1031 | break; | |
2f31c525 BT |
1032 | } |
1033 | ||
e529fea9 PW |
1034 | /* If no report is available for further processing, skip calling |
1035 | * raw_event of subclasses. */ | |
1036 | if (ret != 0) | |
1037 | return ret; | |
1038 | ||
2f31c525 BT |
1039 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) |
1040 | return wtp_raw_event(hdev, data, size); | |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | ||
33797820 | 1045 | static void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying) |
2f31c525 BT |
1046 | { |
1047 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
1048 | char *name; | |
2f31c525 | 1049 | |
33797820 BT |
1050 | if (use_unifying) |
1051 | /* | |
1052 | * the device is connected through an Unifying receiver, and | |
1053 | * might not be already connected. | |
1054 | * Ask the receiver for its name. | |
1055 | */ | |
1056 | name = hidpp_get_unifying_name(hidpp); | |
1057 | else | |
02cc097e | 1058 | name = hidpp_get_device_name(hidpp); |
2f31c525 BT |
1059 | |
1060 | if (!name) | |
1061 | hid_err(hdev, "unable to retrieve the name of the device"); | |
1062 | else | |
1063 | snprintf(hdev->name, sizeof(hdev->name), "%s", name); | |
1064 | ||
1065 | kfree(name); | |
1066 | } | |
1067 | ||
c39e3d5f BT |
1068 | static int hidpp_input_open(struct input_dev *dev) |
1069 | { | |
1070 | struct hid_device *hid = input_get_drvdata(dev); | |
1071 | ||
1072 | return hid_hw_open(hid); | |
1073 | } | |
1074 | ||
1075 | static void hidpp_input_close(struct input_dev *dev) | |
1076 | { | |
1077 | struct hid_device *hid = input_get_drvdata(dev); | |
1078 | ||
1079 | hid_hw_close(hid); | |
1080 | } | |
1081 | ||
1082 | static struct input_dev *hidpp_allocate_input(struct hid_device *hdev) | |
1083 | { | |
1084 | struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev); | |
005b3f57 | 1085 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
c39e3d5f BT |
1086 | |
1087 | if (!input_dev) | |
1088 | return NULL; | |
1089 | ||
1090 | input_set_drvdata(input_dev, hdev); | |
1091 | input_dev->open = hidpp_input_open; | |
1092 | input_dev->close = hidpp_input_close; | |
1093 | ||
005b3f57 | 1094 | input_dev->name = hidpp->name; |
c39e3d5f BT |
1095 | input_dev->phys = hdev->phys; |
1096 | input_dev->uniq = hdev->uniq; | |
1097 | input_dev->id.bustype = hdev->bus; | |
1098 | input_dev->id.vendor = hdev->vendor; | |
1099 | input_dev->id.product = hdev->product; | |
1100 | input_dev->id.version = hdev->version; | |
1101 | input_dev->dev.parent = &hdev->dev; | |
1102 | ||
1103 | return input_dev; | |
1104 | } | |
1105 | ||
1106 | static void hidpp_connect_event(struct hidpp_device *hidpp) | |
1107 | { | |
1108 | struct hid_device *hdev = hidpp->hid_dev; | |
1109 | int ret = 0; | |
1110 | bool connected = atomic_read(&hidpp->connected); | |
1111 | struct input_dev *input; | |
1112 | char *name, *devm_name; | |
c39e3d5f | 1113 | |
bf159447 BT |
1114 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { |
1115 | ret = wtp_connect(hdev, connected); | |
1116 | if (ret) | |
1117 | return; | |
1118 | } | |
586bdc4e | 1119 | |
c39e3d5f BT |
1120 | if (!connected || hidpp->delayed_input) |
1121 | return; | |
1122 | ||
1123 | if (!hidpp->protocol_major) { | |
1124 | ret = !hidpp_is_connected(hidpp); | |
1125 | if (ret) { | |
1126 | hid_err(hdev, "Can not get the protocol version.\n"); | |
1127 | return; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | /* the device is already connected, we can ask for its name and | |
1132 | * protocol */ | |
1133 | hid_info(hdev, "HID++ %u.%u device connected.\n", | |
1134 | hidpp->protocol_major, hidpp->protocol_minor); | |
1135 | ||
005b3f57 BT |
1136 | if (!hidpp->name || hidpp->name == hdev->name) { |
1137 | name = hidpp_get_device_name(hidpp); | |
1138 | if (!name) { | |
1139 | hid_err(hdev, | |
1140 | "unable to retrieve the name of the device"); | |
1141 | return; | |
1142 | } | |
1143 | ||
1144 | devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name); | |
1145 | kfree(name); | |
1146 | if (!devm_name) | |
1147 | return; | |
1148 | ||
1149 | hidpp->name = devm_name; | |
1150 | } | |
1151 | ||
c39e3d5f BT |
1152 | input = hidpp_allocate_input(hdev); |
1153 | if (!input) { | |
1154 | hid_err(hdev, "cannot allocate new input device: %d\n", ret); | |
1155 | return; | |
1156 | } | |
1157 | ||
c39e3d5f BT |
1158 | hidpp_populate_input(hidpp, input, false); |
1159 | ||
1160 | ret = input_register_device(input); | |
1161 | if (ret) | |
1162 | input_free_device(input); | |
1163 | ||
1164 | hidpp->delayed_input = input; | |
1165 | } | |
1166 | ||
2f31c525 BT |
1167 | static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) |
1168 | { | |
1169 | struct hidpp_device *hidpp; | |
1170 | int ret; | |
1171 | bool connected; | |
c39e3d5f | 1172 | unsigned int connect_mask = HID_CONNECT_DEFAULT; |
2f31c525 BT |
1173 | |
1174 | hidpp = devm_kzalloc(&hdev->dev, sizeof(struct hidpp_device), | |
1175 | GFP_KERNEL); | |
1176 | if (!hidpp) | |
1177 | return -ENOMEM; | |
1178 | ||
1179 | hidpp->hid_dev = hdev; | |
005b3f57 | 1180 | hidpp->name = hdev->name; |
2f31c525 BT |
1181 | hid_set_drvdata(hdev, hidpp); |
1182 | ||
1183 | hidpp->quirks = id->driver_data; | |
1184 | ||
9188dbae BT |
1185 | if (disable_raw_mode) { |
1186 | hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP; | |
1187 | hidpp->quirks &= ~HIDPP_QUIRK_DELAYED_INIT; | |
1188 | } | |
1189 | ||
2f31c525 BT |
1190 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { |
1191 | ret = wtp_allocate(hdev, id); | |
1192 | if (ret) | |
f486d9db | 1193 | goto wtp_allocate_fail; |
2f31c525 BT |
1194 | } |
1195 | ||
c39e3d5f | 1196 | INIT_WORK(&hidpp->work, delayed_work_cb); |
2f31c525 BT |
1197 | mutex_init(&hidpp->send_mutex); |
1198 | init_waitqueue_head(&hidpp->wait); | |
1199 | ||
1200 | ret = hid_parse(hdev); | |
1201 | if (ret) { | |
1202 | hid_err(hdev, "%s:parse failed\n", __func__); | |
1203 | goto hid_parse_fail; | |
1204 | } | |
1205 | ||
1206 | /* Allow incoming packets */ | |
1207 | hid_device_io_start(hdev); | |
1208 | ||
1209 | connected = hidpp_is_connected(hidpp); | |
ab94e562 BT |
1210 | if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) { |
1211 | if (!connected) { | |
b832da56 | 1212 | ret = -ENODEV; |
ab94e562 | 1213 | hid_err(hdev, "Device not connected"); |
f486d9db | 1214 | hid_device_io_stop(hdev); |
ab94e562 BT |
1215 | goto hid_parse_fail; |
1216 | } | |
2f31c525 | 1217 | |
ab94e562 BT |
1218 | hid_info(hdev, "HID++ %u.%u device connected.\n", |
1219 | hidpp->protocol_major, hidpp->protocol_minor); | |
ab94e562 | 1220 | } |
2f31c525 | 1221 | |
33797820 | 1222 | hidpp_overwrite_name(hdev, id->group == HID_GROUP_LOGITECH_DJ_DEVICE); |
c39e3d5f | 1223 | atomic_set(&hidpp->connected, connected); |
33797820 | 1224 | |
c39e3d5f | 1225 | if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) { |
2f31c525 BT |
1226 | ret = wtp_get_config(hidpp); |
1227 | if (ret) | |
1228 | goto hid_parse_fail; | |
1229 | } | |
1230 | ||
1231 | /* Block incoming packets */ | |
1232 | hid_device_io_stop(hdev); | |
1233 | ||
c39e3d5f BT |
1234 | if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) |
1235 | connect_mask &= ~HID_CONNECT_HIDINPUT; | |
1236 | ||
1237 | ret = hid_hw_start(hdev, connect_mask); | |
2f31c525 BT |
1238 | if (ret) { |
1239 | hid_err(hdev, "%s:hid_hw_start returned error\n", __func__); | |
1240 | goto hid_hw_start_fail; | |
1241 | } | |
1242 | ||
c39e3d5f BT |
1243 | if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) { |
1244 | /* Allow incoming packets */ | |
1245 | hid_device_io_start(hdev); | |
1246 | ||
1247 | hidpp_connect_event(hidpp); | |
1248 | } | |
1249 | ||
2f31c525 BT |
1250 | return ret; |
1251 | ||
1252 | hid_hw_start_fail: | |
1253 | hid_parse_fail: | |
c39e3d5f | 1254 | cancel_work_sync(&hidpp->work); |
2f31c525 | 1255 | mutex_destroy(&hidpp->send_mutex); |
f486d9db | 1256 | wtp_allocate_fail: |
2f31c525 BT |
1257 | hid_set_drvdata(hdev, NULL); |
1258 | return ret; | |
1259 | } | |
1260 | ||
1261 | static void hidpp_remove(struct hid_device *hdev) | |
1262 | { | |
1263 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
1264 | ||
c39e3d5f | 1265 | cancel_work_sync(&hidpp->work); |
2f31c525 BT |
1266 | mutex_destroy(&hidpp->send_mutex); |
1267 | hid_hw_stop(hdev); | |
1268 | } | |
1269 | ||
1270 | static const struct hid_device_id hidpp_devices[] = { | |
57ac86cf BT |
1271 | { /* wireless touchpad */ |
1272 | HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1273 | USB_VENDOR_ID_LOGITECH, 0x4011), | |
1274 | .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT | | |
1275 | HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS }, | |
586bdc4e BT |
1276 | { /* wireless touchpad T650 */ |
1277 | HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1278 | USB_VENDOR_ID_LOGITECH, 0x4101), | |
1279 | .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT }, | |
2f31c525 BT |
1280 | { /* wireless touchpad T651 */ |
1281 | HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, | |
1282 | USB_DEVICE_ID_LOGITECH_T651), | |
1283 | .driver_data = HIDPP_QUIRK_CLASS_WTP }, | |
ab94e562 BT |
1284 | |
1285 | { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1286 | USB_VENDOR_ID_LOGITECH, HID_ANY_ID)}, | |
2f31c525 BT |
1287 | {} |
1288 | }; | |
1289 | ||
1290 | MODULE_DEVICE_TABLE(hid, hidpp_devices); | |
1291 | ||
1292 | static struct hid_driver hidpp_driver = { | |
1293 | .name = "logitech-hidpp-device", | |
1294 | .id_table = hidpp_devices, | |
1295 | .probe = hidpp_probe, | |
1296 | .remove = hidpp_remove, | |
1297 | .raw_event = hidpp_raw_event, | |
1298 | .input_configured = hidpp_input_configured, | |
1299 | .input_mapping = hidpp_input_mapping, | |
1300 | }; | |
1301 | ||
1302 | module_hid_driver(hidpp_driver); |