Commit | Line | Data |
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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 | ||
31 | #define REPORT_ID_HIDPP_SHORT 0x10 | |
32 | #define REPORT_ID_HIDPP_LONG 0x11 | |
33 | ||
34 | #define HIDPP_REPORT_SHORT_LENGTH 7 | |
35 | #define HIDPP_REPORT_LONG_LENGTH 20 | |
36 | ||
37 | #define HIDPP_QUIRK_CLASS_WTP BIT(0) | |
38 | ||
c39e3d5f BT |
39 | /* bits 1..20 are reserved for classes */ |
40 | #define HIDPP_QUIRK_DELAYED_INIT BIT(21) | |
57ac86cf | 41 | #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22) |
3a61e975 | 42 | #define HIDPP_QUIRK_MULTI_INPUT BIT(23) |
c39e3d5f | 43 | |
2f31c525 BT |
44 | /* |
45 | * There are two hidpp protocols in use, the first version hidpp10 is known | |
46 | * as register access protocol or RAP, the second version hidpp20 is known as | |
47 | * feature access protocol or FAP | |
48 | * | |
49 | * Most older devices (including the Unifying usb receiver) use the RAP protocol | |
50 | * where as most newer devices use the FAP protocol. Both protocols are | |
51 | * compatible with the underlying transport, which could be usb, Unifiying, or | |
52 | * bluetooth. The message lengths are defined by the hid vendor specific report | |
53 | * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and | |
54 | * the HIDPP_LONG report type (total message length 20 bytes) | |
55 | * | |
56 | * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG | |
57 | * messages. The Unifying receiver itself responds to RAP messages (device index | |
58 | * is 0xFF for the receiver), and all messages (short or long) with a device | |
59 | * index between 1 and 6 are passed untouched to the corresponding paired | |
60 | * Unifying device. | |
61 | * | |
62 | * The paired device can be RAP or FAP, it will receive the message untouched | |
63 | * from the Unifiying receiver. | |
64 | */ | |
65 | ||
66 | struct fap { | |
67 | u8 feature_index; | |
68 | u8 funcindex_clientid; | |
69 | u8 params[HIDPP_REPORT_LONG_LENGTH - 4U]; | |
70 | }; | |
71 | ||
72 | struct rap { | |
73 | u8 sub_id; | |
74 | u8 reg_address; | |
75 | u8 params[HIDPP_REPORT_LONG_LENGTH - 4U]; | |
76 | }; | |
77 | ||
78 | struct hidpp_report { | |
79 | u8 report_id; | |
80 | u8 device_index; | |
81 | union { | |
82 | struct fap fap; | |
83 | struct rap rap; | |
84 | u8 rawbytes[sizeof(struct fap)]; | |
85 | }; | |
86 | } __packed; | |
87 | ||
88 | struct hidpp_device { | |
89 | struct hid_device *hid_dev; | |
90 | struct mutex send_mutex; | |
91 | void *send_receive_buf; | |
92 | wait_queue_head_t wait; | |
93 | bool answer_available; | |
94 | u8 protocol_major; | |
95 | u8 protocol_minor; | |
96 | ||
97 | void *private_data; | |
98 | ||
c39e3d5f BT |
99 | struct work_struct work; |
100 | struct kfifo delayed_work_fifo; | |
101 | atomic_t connected; | |
102 | struct input_dev *delayed_input; | |
103 | ||
2f31c525 BT |
104 | unsigned long quirks; |
105 | }; | |
106 | ||
107 | ||
108 | #define HIDPP_ERROR 0x8f | |
109 | #define HIDPP_ERROR_SUCCESS 0x00 | |
110 | #define HIDPP_ERROR_INVALID_SUBID 0x01 | |
111 | #define HIDPP_ERROR_INVALID_ADRESS 0x02 | |
112 | #define HIDPP_ERROR_INVALID_VALUE 0x03 | |
113 | #define HIDPP_ERROR_CONNECT_FAIL 0x04 | |
114 | #define HIDPP_ERROR_TOO_MANY_DEVICES 0x05 | |
115 | #define HIDPP_ERROR_ALREADY_EXISTS 0x06 | |
116 | #define HIDPP_ERROR_BUSY 0x07 | |
117 | #define HIDPP_ERROR_UNKNOWN_DEVICE 0x08 | |
118 | #define HIDPP_ERROR_RESOURCE_ERROR 0x09 | |
119 | #define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a | |
120 | #define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b | |
121 | #define HIDPP_ERROR_WRONG_PIN_CODE 0x0c | |
122 | ||
c39e3d5f BT |
123 | static void hidpp_connect_event(struct hidpp_device *hidpp_dev); |
124 | ||
2f31c525 BT |
125 | static int __hidpp_send_report(struct hid_device *hdev, |
126 | struct hidpp_report *hidpp_report) | |
127 | { | |
128 | int fields_count, ret; | |
129 | ||
130 | switch (hidpp_report->report_id) { | |
131 | case REPORT_ID_HIDPP_SHORT: | |
132 | fields_count = HIDPP_REPORT_SHORT_LENGTH; | |
133 | break; | |
134 | case REPORT_ID_HIDPP_LONG: | |
135 | fields_count = HIDPP_REPORT_LONG_LENGTH; | |
136 | break; | |
137 | default: | |
138 | return -ENODEV; | |
139 | } | |
140 | ||
141 | /* | |
142 | * set the device_index as the receiver, it will be overwritten by | |
143 | * hid_hw_request if needed | |
144 | */ | |
145 | hidpp_report->device_index = 0xff; | |
146 | ||
147 | ret = hid_hw_raw_request(hdev, hidpp_report->report_id, | |
148 | (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT, | |
149 | HID_REQ_SET_REPORT); | |
150 | ||
151 | return ret == fields_count ? 0 : -1; | |
152 | } | |
153 | ||
8c9952b2 BT |
154 | /** |
155 | * hidpp_send_message_sync() returns 0 in case of success, and something else | |
156 | * in case of a failure. | |
157 | * - If ' something else' is positive, that means that an error has been raised | |
158 | * by the protocol itself. | |
159 | * - If ' something else' is negative, that means that we had a classic error | |
160 | * (-ENOMEM, -EPIPE, etc...) | |
161 | */ | |
2f31c525 BT |
162 | static int hidpp_send_message_sync(struct hidpp_device *hidpp, |
163 | struct hidpp_report *message, | |
164 | struct hidpp_report *response) | |
165 | { | |
166 | int ret; | |
167 | ||
168 | mutex_lock(&hidpp->send_mutex); | |
169 | ||
170 | hidpp->send_receive_buf = response; | |
171 | hidpp->answer_available = false; | |
172 | ||
173 | /* | |
174 | * So that we can later validate the answer when it arrives | |
175 | * in hidpp_raw_event | |
176 | */ | |
177 | *response = *message; | |
178 | ||
179 | ret = __hidpp_send_report(hidpp->hid_dev, message); | |
180 | ||
181 | if (ret) { | |
182 | dbg_hid("__hidpp_send_report returned err: %d\n", ret); | |
183 | memset(response, 0, sizeof(struct hidpp_report)); | |
184 | goto exit; | |
185 | } | |
186 | ||
187 | if (!wait_event_timeout(hidpp->wait, hidpp->answer_available, | |
188 | 5*HZ)) { | |
189 | dbg_hid("%s:timeout waiting for response\n", __func__); | |
190 | memset(response, 0, sizeof(struct hidpp_report)); | |
191 | ret = -ETIMEDOUT; | |
192 | } | |
193 | ||
194 | if (response->report_id == REPORT_ID_HIDPP_SHORT && | |
195 | response->fap.feature_index == HIDPP_ERROR) { | |
196 | ret = response->fap.params[1]; | |
197 | dbg_hid("__hidpp_send_report got hidpp error %02X\n", ret); | |
198 | goto exit; | |
199 | } | |
200 | ||
201 | exit: | |
202 | mutex_unlock(&hidpp->send_mutex); | |
203 | return ret; | |
204 | ||
205 | } | |
206 | ||
207 | static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp, | |
208 | u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count, | |
209 | struct hidpp_report *response) | |
210 | { | |
3e7830ce | 211 | struct hidpp_report *message; |
2f31c525 BT |
212 | int ret; |
213 | ||
214 | if (param_count > sizeof(message->fap.params)) | |
215 | return -EINVAL; | |
216 | ||
3e7830ce DC |
217 | message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); |
218 | if (!message) | |
219 | return -ENOMEM; | |
2f31c525 BT |
220 | message->report_id = REPORT_ID_HIDPP_LONG; |
221 | message->fap.feature_index = feat_index; | |
222 | message->fap.funcindex_clientid = funcindex_clientid; | |
223 | memcpy(&message->fap.params, params, param_count); | |
224 | ||
225 | ret = hidpp_send_message_sync(hidpp, message, response); | |
226 | kfree(message); | |
227 | return ret; | |
228 | } | |
229 | ||
33797820 BT |
230 | static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev, |
231 | u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count, | |
232 | struct hidpp_report *response) | |
233 | { | |
3e7830ce | 234 | struct hidpp_report *message; |
33797820 BT |
235 | int ret; |
236 | ||
237 | if ((report_id != REPORT_ID_HIDPP_SHORT) && | |
238 | (report_id != REPORT_ID_HIDPP_LONG)) | |
239 | return -EINVAL; | |
240 | ||
241 | if (param_count > sizeof(message->rap.params)) | |
242 | return -EINVAL; | |
243 | ||
3e7830ce DC |
244 | message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); |
245 | if (!message) | |
246 | return -ENOMEM; | |
33797820 BT |
247 | message->report_id = report_id; |
248 | message->rap.sub_id = sub_id; | |
249 | message->rap.reg_address = reg_address; | |
250 | memcpy(&message->rap.params, params, param_count); | |
251 | ||
252 | ret = hidpp_send_message_sync(hidpp_dev, message, response); | |
253 | kfree(message); | |
254 | return ret; | |
255 | } | |
256 | ||
c39e3d5f BT |
257 | static void delayed_work_cb(struct work_struct *work) |
258 | { | |
259 | struct hidpp_device *hidpp = container_of(work, struct hidpp_device, | |
260 | work); | |
261 | hidpp_connect_event(hidpp); | |
262 | } | |
263 | ||
2f31c525 BT |
264 | static inline bool hidpp_match_answer(struct hidpp_report *question, |
265 | struct hidpp_report *answer) | |
266 | { | |
267 | return (answer->fap.feature_index == question->fap.feature_index) && | |
268 | (answer->fap.funcindex_clientid == question->fap.funcindex_clientid); | |
269 | } | |
270 | ||
271 | static inline bool hidpp_match_error(struct hidpp_report *question, | |
272 | struct hidpp_report *answer) | |
273 | { | |
274 | return (answer->fap.feature_index == HIDPP_ERROR) && | |
275 | (answer->fap.funcindex_clientid == question->fap.feature_index) && | |
276 | (answer->fap.params[0] == question->fap.funcindex_clientid); | |
277 | } | |
278 | ||
c39e3d5f BT |
279 | static inline bool hidpp_report_is_connect_event(struct hidpp_report *report) |
280 | { | |
281 | return (report->report_id == REPORT_ID_HIDPP_SHORT) && | |
282 | (report->rap.sub_id == 0x41); | |
283 | } | |
284 | ||
a0e625f8 BT |
285 | /** |
286 | * hidpp_prefix_name() prefixes the current given name with "Logitech ". | |
287 | */ | |
288 | static void hidpp_prefix_name(char **name, int name_length) | |
289 | { | |
290 | #define PREFIX_LENGTH 9 /* "Logitech " */ | |
291 | ||
292 | int new_length; | |
293 | char *new_name; | |
294 | ||
295 | if (name_length > PREFIX_LENGTH && | |
296 | strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0) | |
297 | /* The prefix has is already in the name */ | |
298 | return; | |
299 | ||
300 | new_length = PREFIX_LENGTH + name_length; | |
301 | new_name = kzalloc(new_length, GFP_KERNEL); | |
302 | if (!new_name) | |
303 | return; | |
304 | ||
305 | snprintf(new_name, new_length, "Logitech %s", *name); | |
306 | ||
307 | kfree(*name); | |
308 | ||
309 | *name = new_name; | |
310 | } | |
311 | ||
33797820 BT |
312 | /* -------------------------------------------------------------------------- */ |
313 | /* HIDP++ 1.0 commands */ | |
314 | /* -------------------------------------------------------------------------- */ | |
315 | ||
316 | #define HIDPP_SET_REGISTER 0x80 | |
317 | #define HIDPP_GET_REGISTER 0x81 | |
318 | #define HIDPP_SET_LONG_REGISTER 0x82 | |
319 | #define HIDPP_GET_LONG_REGISTER 0x83 | |
320 | ||
321 | #define HIDPP_REG_PAIRING_INFORMATION 0xB5 | |
322 | #define DEVICE_NAME 0x40 | |
323 | ||
324 | static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev) | |
325 | { | |
326 | struct hidpp_report response; | |
327 | int ret; | |
328 | /* hid-logitech-dj is in charge of setting the right device index */ | |
329 | u8 params[1] = { DEVICE_NAME }; | |
330 | char *name; | |
331 | int len; | |
332 | ||
333 | ret = hidpp_send_rap_command_sync(hidpp_dev, | |
334 | REPORT_ID_HIDPP_SHORT, | |
335 | HIDPP_GET_LONG_REGISTER, | |
336 | HIDPP_REG_PAIRING_INFORMATION, | |
337 | params, 1, &response); | |
338 | if (ret) | |
339 | return NULL; | |
340 | ||
341 | len = response.rap.params[1]; | |
342 | ||
3a034a7a PW |
343 | if (2 + len > sizeof(response.rap.params)) |
344 | return NULL; | |
345 | ||
33797820 BT |
346 | name = kzalloc(len + 1, GFP_KERNEL); |
347 | if (!name) | |
348 | return NULL; | |
349 | ||
350 | memcpy(name, &response.rap.params[2], len); | |
a0e625f8 BT |
351 | |
352 | /* include the terminating '\0' */ | |
353 | hidpp_prefix_name(&name, len + 1); | |
354 | ||
33797820 BT |
355 | return name; |
356 | } | |
357 | ||
2f31c525 BT |
358 | /* -------------------------------------------------------------------------- */ |
359 | /* 0x0000: Root */ | |
360 | /* -------------------------------------------------------------------------- */ | |
361 | ||
362 | #define HIDPP_PAGE_ROOT 0x0000 | |
363 | #define HIDPP_PAGE_ROOT_IDX 0x00 | |
364 | ||
365 | #define CMD_ROOT_GET_FEATURE 0x01 | |
366 | #define CMD_ROOT_GET_PROTOCOL_VERSION 0x11 | |
367 | ||
368 | static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature, | |
369 | u8 *feature_index, u8 *feature_type) | |
370 | { | |
371 | struct hidpp_report response; | |
372 | int ret; | |
373 | u8 params[2] = { feature >> 8, feature & 0x00FF }; | |
374 | ||
375 | ret = hidpp_send_fap_command_sync(hidpp, | |
376 | HIDPP_PAGE_ROOT_IDX, | |
377 | CMD_ROOT_GET_FEATURE, | |
378 | params, 2, &response); | |
379 | if (ret) | |
380 | return ret; | |
381 | ||
382 | *feature_index = response.fap.params[0]; | |
383 | *feature_type = response.fap.params[1]; | |
384 | ||
385 | return ret; | |
386 | } | |
387 | ||
388 | static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp) | |
389 | { | |
390 | struct hidpp_report response; | |
391 | int ret; | |
392 | ||
393 | ret = hidpp_send_fap_command_sync(hidpp, | |
394 | HIDPP_PAGE_ROOT_IDX, | |
395 | CMD_ROOT_GET_PROTOCOL_VERSION, | |
396 | NULL, 0, &response); | |
397 | ||
552f12eb | 398 | if (ret == HIDPP_ERROR_INVALID_SUBID) { |
2f31c525 BT |
399 | hidpp->protocol_major = 1; |
400 | hidpp->protocol_minor = 0; | |
401 | return 0; | |
402 | } | |
403 | ||
552f12eb BT |
404 | /* the device might not be connected */ |
405 | if (ret == HIDPP_ERROR_RESOURCE_ERROR) | |
406 | return -EIO; | |
407 | ||
8c9952b2 BT |
408 | if (ret > 0) { |
409 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
410 | __func__, ret); | |
411 | return -EPROTO; | |
412 | } | |
2f31c525 | 413 | if (ret) |
8c9952b2 | 414 | return ret; |
2f31c525 BT |
415 | |
416 | hidpp->protocol_major = response.fap.params[0]; | |
417 | hidpp->protocol_minor = response.fap.params[1]; | |
418 | ||
419 | return ret; | |
420 | } | |
421 | ||
422 | static bool hidpp_is_connected(struct hidpp_device *hidpp) | |
423 | { | |
424 | int ret; | |
425 | ||
426 | ret = hidpp_root_get_protocol_version(hidpp); | |
427 | if (!ret) | |
428 | hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n", | |
429 | hidpp->protocol_major, hidpp->protocol_minor); | |
430 | return ret == 0; | |
431 | } | |
432 | ||
433 | /* -------------------------------------------------------------------------- */ | |
434 | /* 0x0005: GetDeviceNameType */ | |
435 | /* -------------------------------------------------------------------------- */ | |
436 | ||
437 | #define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005 | |
438 | ||
439 | #define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x01 | |
440 | #define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x11 | |
441 | #define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x21 | |
442 | ||
443 | static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp, | |
444 | u8 feature_index, u8 *nameLength) | |
445 | { | |
446 | struct hidpp_report response; | |
447 | int ret; | |
448 | ||
449 | ret = hidpp_send_fap_command_sync(hidpp, feature_index, | |
450 | CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response); | |
451 | ||
8c9952b2 BT |
452 | if (ret > 0) { |
453 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
454 | __func__, ret); | |
455 | return -EPROTO; | |
456 | } | |
2f31c525 | 457 | if (ret) |
8c9952b2 | 458 | return ret; |
2f31c525 BT |
459 | |
460 | *nameLength = response.fap.params[0]; | |
461 | ||
462 | return ret; | |
463 | } | |
464 | ||
465 | static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp, | |
466 | u8 feature_index, u8 char_index, char *device_name, int len_buf) | |
467 | { | |
468 | struct hidpp_report response; | |
469 | int ret, i; | |
470 | int count; | |
471 | ||
472 | ret = hidpp_send_fap_command_sync(hidpp, feature_index, | |
473 | CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1, | |
474 | &response); | |
475 | ||
8c9952b2 BT |
476 | if (ret > 0) { |
477 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
478 | __func__, ret); | |
479 | return -EPROTO; | |
480 | } | |
2f31c525 | 481 | if (ret) |
8c9952b2 | 482 | return ret; |
2f31c525 BT |
483 | |
484 | if (response.report_id == REPORT_ID_HIDPP_LONG) | |
485 | count = HIDPP_REPORT_LONG_LENGTH - 4; | |
486 | else | |
487 | count = HIDPP_REPORT_SHORT_LENGTH - 4; | |
488 | ||
489 | if (len_buf < count) | |
490 | count = len_buf; | |
491 | ||
492 | for (i = 0; i < count; i++) | |
493 | device_name[i] = response.fap.params[i]; | |
494 | ||
495 | return count; | |
496 | } | |
497 | ||
02cc097e | 498 | static char *hidpp_get_device_name(struct hidpp_device *hidpp) |
2f31c525 BT |
499 | { |
500 | u8 feature_type; | |
501 | u8 feature_index; | |
502 | u8 __name_length; | |
503 | char *name; | |
504 | unsigned index = 0; | |
505 | int ret; | |
506 | ||
507 | ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE, | |
508 | &feature_index, &feature_type); | |
509 | if (ret) | |
02cc097e | 510 | return NULL; |
2f31c525 BT |
511 | |
512 | ret = hidpp_devicenametype_get_count(hidpp, feature_index, | |
513 | &__name_length); | |
514 | if (ret) | |
02cc097e | 515 | return NULL; |
2f31c525 BT |
516 | |
517 | name = kzalloc(__name_length + 1, GFP_KERNEL); | |
518 | if (!name) | |
02cc097e | 519 | return NULL; |
2f31c525 | 520 | |
1430ee73 PW |
521 | while (index < __name_length) { |
522 | ret = hidpp_devicenametype_get_device_name(hidpp, | |
2f31c525 BT |
523 | feature_index, index, name + index, |
524 | __name_length - index); | |
1430ee73 PW |
525 | if (ret <= 0) { |
526 | kfree(name); | |
527 | return NULL; | |
528 | } | |
529 | index += ret; | |
530 | } | |
2f31c525 | 531 | |
a0e625f8 BT |
532 | /* include the terminating '\0' */ |
533 | hidpp_prefix_name(&name, __name_length + 1); | |
534 | ||
2f31c525 | 535 | return name; |
2f31c525 BT |
536 | } |
537 | ||
538 | /* -------------------------------------------------------------------------- */ | |
539 | /* 0x6100: TouchPadRawXY */ | |
540 | /* -------------------------------------------------------------------------- */ | |
541 | ||
542 | #define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100 | |
543 | ||
544 | #define CMD_TOUCHPAD_GET_RAW_INFO 0x01 | |
586bdc4e BT |
545 | #define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21 |
546 | ||
547 | #define EVENT_TOUCHPAD_RAW_XY 0x00 | |
2f31c525 BT |
548 | |
549 | #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01 | |
550 | #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03 | |
551 | ||
552 | struct hidpp_touchpad_raw_info { | |
553 | u16 x_size; | |
554 | u16 y_size; | |
555 | u8 z_range; | |
556 | u8 area_range; | |
557 | u8 timestamp_unit; | |
558 | u8 maxcontacts; | |
559 | u8 origin; | |
560 | u16 res; | |
561 | }; | |
562 | ||
563 | struct hidpp_touchpad_raw_xy_finger { | |
564 | u8 contact_type; | |
565 | u8 contact_status; | |
566 | u16 x; | |
567 | u16 y; | |
568 | u8 z; | |
569 | u8 area; | |
570 | u8 finger_id; | |
571 | }; | |
572 | ||
573 | struct hidpp_touchpad_raw_xy { | |
574 | u16 timestamp; | |
575 | struct hidpp_touchpad_raw_xy_finger fingers[2]; | |
576 | u8 spurious_flag; | |
577 | u8 end_of_frame; | |
578 | u8 finger_count; | |
579 | u8 button; | |
580 | }; | |
581 | ||
582 | static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp, | |
583 | u8 feature_index, struct hidpp_touchpad_raw_info *raw_info) | |
584 | { | |
585 | struct hidpp_report response; | |
586 | int ret; | |
587 | u8 *params = (u8 *)response.fap.params; | |
588 | ||
589 | ret = hidpp_send_fap_command_sync(hidpp, feature_index, | |
590 | CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response); | |
591 | ||
8c9952b2 BT |
592 | if (ret > 0) { |
593 | hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", | |
594 | __func__, ret); | |
595 | return -EPROTO; | |
596 | } | |
2f31c525 | 597 | if (ret) |
8c9952b2 | 598 | return ret; |
2f31c525 BT |
599 | |
600 | raw_info->x_size = get_unaligned_be16(¶ms[0]); | |
601 | raw_info->y_size = get_unaligned_be16(¶ms[2]); | |
602 | raw_info->z_range = params[4]; | |
603 | raw_info->area_range = params[5]; | |
604 | raw_info->maxcontacts = params[7]; | |
605 | raw_info->origin = params[8]; | |
606 | /* res is given in unit per inch */ | |
607 | raw_info->res = get_unaligned_be16(¶ms[13]) * 2 / 51; | |
608 | ||
609 | return ret; | |
610 | } | |
611 | ||
586bdc4e BT |
612 | static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev, |
613 | u8 feature_index, bool send_raw_reports, | |
614 | bool sensor_enhanced_settings) | |
615 | { | |
616 | struct hidpp_report response; | |
617 | ||
618 | /* | |
619 | * Params: | |
620 | * bit 0 - enable raw | |
621 | * bit 1 - 16bit Z, no area | |
622 | * bit 2 - enhanced sensitivity | |
623 | * bit 3 - width, height (4 bits each) instead of area | |
624 | * bit 4 - send raw + gestures (degrades smoothness) | |
625 | * remaining bits - reserved | |
626 | */ | |
627 | u8 params = send_raw_reports | (sensor_enhanced_settings << 2); | |
628 | ||
629 | return hidpp_send_fap_command_sync(hidpp_dev, feature_index, | |
630 | CMD_TOUCHPAD_SET_RAW_REPORT_STATE, ¶ms, 1, &response); | |
631 | } | |
632 | ||
633 | static void hidpp_touchpad_touch_event(u8 *data, | |
634 | struct hidpp_touchpad_raw_xy_finger *finger) | |
635 | { | |
636 | u8 x_m = data[0] << 2; | |
637 | u8 y_m = data[2] << 2; | |
638 | ||
639 | finger->x = x_m << 6 | data[1]; | |
640 | finger->y = y_m << 6 | data[3]; | |
641 | ||
642 | finger->contact_type = data[0] >> 6; | |
643 | finger->contact_status = data[2] >> 6; | |
644 | ||
645 | finger->z = data[4]; | |
646 | finger->area = data[5]; | |
647 | finger->finger_id = data[6] >> 4; | |
648 | } | |
649 | ||
650 | static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev, | |
651 | u8 *data, struct hidpp_touchpad_raw_xy *raw_xy) | |
652 | { | |
653 | memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy)); | |
654 | raw_xy->end_of_frame = data[8] & 0x01; | |
655 | raw_xy->spurious_flag = (data[8] >> 1) & 0x01; | |
656 | raw_xy->finger_count = data[15] & 0x0f; | |
657 | raw_xy->button = (data[8] >> 2) & 0x01; | |
658 | ||
659 | if (raw_xy->finger_count) { | |
660 | hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]); | |
661 | hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]); | |
662 | } | |
663 | } | |
664 | ||
2f31c525 BT |
665 | /* ************************************************************************** */ |
666 | /* */ | |
667 | /* Device Support */ | |
668 | /* */ | |
669 | /* ************************************************************************** */ | |
670 | ||
671 | /* -------------------------------------------------------------------------- */ | |
672 | /* Touchpad HID++ devices */ | |
673 | /* -------------------------------------------------------------------------- */ | |
674 | ||
57ac86cf BT |
675 | #define WTP_MANUAL_RESOLUTION 39 |
676 | ||
2f31c525 BT |
677 | struct wtp_data { |
678 | struct input_dev *input; | |
679 | u16 x_size, y_size; | |
680 | u8 finger_count; | |
681 | u8 mt_feature_index; | |
682 | u8 button_feature_index; | |
683 | u8 maxcontacts; | |
684 | bool flip_y; | |
685 | unsigned int resolution; | |
686 | }; | |
687 | ||
688 | static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
689 | struct hid_field *field, struct hid_usage *usage, | |
690 | unsigned long **bit, int *max) | |
691 | { | |
3a61e975 BT |
692 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
693 | ||
694 | if ((hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT) && | |
695 | (field->application == HID_GD_KEYBOARD)) | |
696 | return 0; | |
697 | ||
2f31c525 BT |
698 | return -1; |
699 | } | |
700 | ||
c39e3d5f BT |
701 | static void wtp_populate_input(struct hidpp_device *hidpp, |
702 | struct input_dev *input_dev, bool origin_is_hid_core) | |
2f31c525 | 703 | { |
2f31c525 | 704 | struct wtp_data *wd = hidpp->private_data; |
2f31c525 | 705 | |
3a61e975 BT |
706 | if ((hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT) && origin_is_hid_core) |
707 | /* this is the generic hid-input call */ | |
708 | return; | |
709 | ||
2f31c525 BT |
710 | __set_bit(EV_ABS, input_dev->evbit); |
711 | __set_bit(EV_KEY, input_dev->evbit); | |
712 | __clear_bit(EV_REL, input_dev->evbit); | |
713 | __clear_bit(EV_LED, input_dev->evbit); | |
714 | ||
715 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0); | |
716 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution); | |
717 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0); | |
718 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution); | |
719 | ||
720 | /* Max pressure is not given by the devices, pick one */ | |
721 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0); | |
722 | ||
723 | input_set_capability(input_dev, EV_KEY, BTN_LEFT); | |
724 | ||
57ac86cf BT |
725 | if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) |
726 | input_set_capability(input_dev, EV_KEY, BTN_RIGHT); | |
727 | else | |
728 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
2f31c525 BT |
729 | |
730 | input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER | | |
731 | INPUT_MT_DROP_UNUSED); | |
732 | ||
733 | wd->input = input_dev; | |
734 | } | |
735 | ||
736 | static void wtp_touch_event(struct wtp_data *wd, | |
737 | struct hidpp_touchpad_raw_xy_finger *touch_report) | |
738 | { | |
739 | int slot; | |
740 | ||
741 | if (!touch_report->finger_id || touch_report->contact_type) | |
742 | /* no actual data */ | |
743 | return; | |
744 | ||
745 | slot = input_mt_get_slot_by_key(wd->input, touch_report->finger_id); | |
746 | ||
747 | input_mt_slot(wd->input, slot); | |
748 | input_mt_report_slot_state(wd->input, MT_TOOL_FINGER, | |
749 | touch_report->contact_status); | |
750 | if (touch_report->contact_status) { | |
751 | input_event(wd->input, EV_ABS, ABS_MT_POSITION_X, | |
752 | touch_report->x); | |
753 | input_event(wd->input, EV_ABS, ABS_MT_POSITION_Y, | |
754 | wd->flip_y ? wd->y_size - touch_report->y : | |
755 | touch_report->y); | |
756 | input_event(wd->input, EV_ABS, ABS_MT_PRESSURE, | |
757 | touch_report->area); | |
758 | } | |
759 | } | |
760 | ||
761 | static void wtp_send_raw_xy_event(struct hidpp_device *hidpp, | |
762 | struct hidpp_touchpad_raw_xy *raw) | |
763 | { | |
764 | struct wtp_data *wd = hidpp->private_data; | |
765 | int i; | |
766 | ||
767 | for (i = 0; i < 2; i++) | |
768 | wtp_touch_event(wd, &(raw->fingers[i])); | |
769 | ||
57ac86cf BT |
770 | if (raw->end_of_frame && |
771 | !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)) | |
2f31c525 BT |
772 | input_event(wd->input, EV_KEY, BTN_LEFT, raw->button); |
773 | ||
774 | if (raw->end_of_frame || raw->finger_count <= 2) { | |
775 | input_mt_sync_frame(wd->input); | |
776 | input_sync(wd->input); | |
777 | } | |
778 | } | |
779 | ||
780 | static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data) | |
781 | { | |
782 | struct wtp_data *wd = hidpp->private_data; | |
783 | u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) + | |
784 | (data[7] >> 4) * (data[7] >> 4)) / 2; | |
785 | u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) + | |
786 | (data[13] >> 4) * (data[13] >> 4)) / 2; | |
787 | struct hidpp_touchpad_raw_xy raw = { | |
788 | .timestamp = data[1], | |
789 | .fingers = { | |
790 | { | |
791 | .contact_type = 0, | |
792 | .contact_status = !!data[7], | |
793 | .x = get_unaligned_le16(&data[3]), | |
794 | .y = get_unaligned_le16(&data[5]), | |
795 | .z = c1_area, | |
796 | .area = c1_area, | |
797 | .finger_id = data[2], | |
798 | }, { | |
799 | .contact_type = 0, | |
800 | .contact_status = !!data[13], | |
801 | .x = get_unaligned_le16(&data[9]), | |
802 | .y = get_unaligned_le16(&data[11]), | |
803 | .z = c2_area, | |
804 | .area = c2_area, | |
805 | .finger_id = data[8], | |
806 | } | |
807 | }, | |
808 | .finger_count = wd->maxcontacts, | |
809 | .spurious_flag = 0, | |
810 | .end_of_frame = (data[0] >> 7) == 0, | |
811 | .button = data[0] & 0x01, | |
812 | }; | |
813 | ||
814 | wtp_send_raw_xy_event(hidpp, &raw); | |
815 | ||
816 | return 1; | |
817 | } | |
818 | ||
819 | static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) | |
820 | { | |
821 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
822 | struct wtp_data *wd = hidpp->private_data; | |
586bdc4e BT |
823 | struct hidpp_report *report = (struct hidpp_report *)data; |
824 | struct hidpp_touchpad_raw_xy raw; | |
2f31c525 | 825 | |
586bdc4e | 826 | if (!wd || !wd->input) |
2f31c525 BT |
827 | return 1; |
828 | ||
586bdc4e BT |
829 | switch (data[0]) { |
830 | case 0x02: | |
0b3f6569 PW |
831 | if (size < 2) { |
832 | hid_err(hdev, "Received HID report of bad size (%d)", | |
833 | size); | |
834 | return 1; | |
835 | } | |
57ac86cf BT |
836 | if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) { |
837 | input_event(wd->input, EV_KEY, BTN_LEFT, | |
838 | !!(data[1] & 0x01)); | |
839 | input_event(wd->input, EV_KEY, BTN_RIGHT, | |
840 | !!(data[1] & 0x02)); | |
841 | input_sync(wd->input); | |
8abd8205 | 842 | return 0; |
57ac86cf BT |
843 | } else { |
844 | if (size < 21) | |
845 | return 1; | |
846 | return wtp_mouse_raw_xy_event(hidpp, &data[7]); | |
847 | } | |
586bdc4e | 848 | case REPORT_ID_HIDPP_LONG: |
0b3f6569 | 849 | /* size is already checked in hidpp_raw_event. */ |
586bdc4e BT |
850 | if ((report->fap.feature_index != wd->mt_feature_index) || |
851 | (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY)) | |
852 | return 1; | |
853 | hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw); | |
854 | ||
855 | wtp_send_raw_xy_event(hidpp, &raw); | |
856 | return 0; | |
857 | } | |
858 | ||
859 | return 0; | |
2f31c525 BT |
860 | } |
861 | ||
862 | static int wtp_get_config(struct hidpp_device *hidpp) | |
863 | { | |
864 | struct wtp_data *wd = hidpp->private_data; | |
865 | struct hidpp_touchpad_raw_info raw_info = {0}; | |
866 | u8 feature_type; | |
867 | int ret; | |
868 | ||
869 | ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY, | |
870 | &wd->mt_feature_index, &feature_type); | |
871 | if (ret) | |
872 | /* means that the device is not powered up */ | |
873 | return ret; | |
874 | ||
875 | ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index, | |
876 | &raw_info); | |
877 | if (ret) | |
878 | return ret; | |
879 | ||
880 | wd->x_size = raw_info.x_size; | |
881 | wd->y_size = raw_info.y_size; | |
882 | wd->maxcontacts = raw_info.maxcontacts; | |
883 | wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT; | |
884 | wd->resolution = raw_info.res; | |
57ac86cf BT |
885 | if (!wd->resolution) |
886 | wd->resolution = WTP_MANUAL_RESOLUTION; | |
2f31c525 BT |
887 | |
888 | return 0; | |
889 | } | |
890 | ||
891 | static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id) | |
892 | { | |
893 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
894 | struct wtp_data *wd; | |
895 | ||
896 | wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data), | |
897 | GFP_KERNEL); | |
898 | if (!wd) | |
899 | return -ENOMEM; | |
900 | ||
901 | hidpp->private_data = wd; | |
902 | ||
903 | return 0; | |
904 | }; | |
905 | ||
586bdc4e BT |
906 | static void wtp_connect(struct hid_device *hdev, bool connected) |
907 | { | |
908 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
909 | struct wtp_data *wd = hidpp->private_data; | |
910 | int ret; | |
911 | ||
912 | if (!connected) | |
913 | return; | |
914 | ||
915 | if (!wd->x_size) { | |
916 | ret = wtp_get_config(hidpp); | |
917 | if (ret) { | |
918 | hid_err(hdev, "Can not get wtp config: %d\n", ret); | |
919 | return; | |
920 | } | |
921 | } | |
922 | ||
923 | hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index, | |
924 | true, true); | |
925 | } | |
926 | ||
2f31c525 BT |
927 | /* -------------------------------------------------------------------------- */ |
928 | /* Generic HID++ devices */ | |
929 | /* -------------------------------------------------------------------------- */ | |
930 | ||
931 | static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
932 | struct hid_field *field, struct hid_usage *usage, | |
933 | unsigned long **bit, int *max) | |
934 | { | |
935 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
936 | ||
937 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) | |
938 | return wtp_input_mapping(hdev, hi, field, usage, bit, max); | |
939 | ||
940 | return 0; | |
941 | } | |
942 | ||
c39e3d5f BT |
943 | static void hidpp_populate_input(struct hidpp_device *hidpp, |
944 | struct input_dev *input, bool origin_is_hid_core) | |
945 | { | |
946 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) | |
947 | wtp_populate_input(hidpp, input, origin_is_hid_core); | |
948 | } | |
949 | ||
2f31c525 BT |
950 | static void hidpp_input_configured(struct hid_device *hdev, |
951 | struct hid_input *hidinput) | |
952 | { | |
953 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
c39e3d5f | 954 | struct input_dev *input = hidinput->input; |
2f31c525 | 955 | |
c39e3d5f | 956 | hidpp_populate_input(hidpp, input, true); |
2f31c525 BT |
957 | } |
958 | ||
959 | static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, | |
960 | int size) | |
961 | { | |
962 | struct hidpp_report *question = hidpp->send_receive_buf; | |
963 | struct hidpp_report *answer = hidpp->send_receive_buf; | |
964 | struct hidpp_report *report = (struct hidpp_report *)data; | |
965 | ||
966 | /* | |
967 | * If the mutex is locked then we have a pending answer from a | |
968 | * previoulsly sent command | |
969 | */ | |
970 | if (unlikely(mutex_is_locked(&hidpp->send_mutex))) { | |
971 | /* | |
972 | * Check for a correct hidpp20 answer or the corresponding | |
973 | * error | |
974 | */ | |
975 | if (hidpp_match_answer(question, report) || | |
976 | hidpp_match_error(question, report)) { | |
977 | *answer = *report; | |
978 | hidpp->answer_available = true; | |
979 | wake_up(&hidpp->wait); | |
980 | /* | |
981 | * This was an answer to a command that this driver sent | |
982 | * We return 1 to hid-core to avoid forwarding the | |
983 | * command upstream as it has been treated by the driver | |
984 | */ | |
985 | ||
986 | return 1; | |
987 | } | |
988 | } | |
989 | ||
c39e3d5f BT |
990 | if (unlikely(hidpp_report_is_connect_event(report))) { |
991 | atomic_set(&hidpp->connected, | |
992 | !(report->rap.params[0] & (1 << 6))); | |
993 | if ((hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) && | |
994 | (schedule_work(&hidpp->work) == 0)) | |
995 | dbg_hid("%s: connect event already queued\n", __func__); | |
996 | return 1; | |
997 | } | |
998 | ||
2f31c525 BT |
999 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) |
1000 | return wtp_raw_event(hidpp->hid_dev, data, size); | |
1001 | ||
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report, | |
1006 | u8 *data, int size) | |
1007 | { | |
1008 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
1009 | ||
1010 | switch (data[0]) { | |
1011 | case REPORT_ID_HIDPP_LONG: | |
1012 | if (size != HIDPP_REPORT_LONG_LENGTH) { | |
1013 | hid_err(hdev, "received hid++ report of bad size (%d)", | |
1014 | size); | |
1015 | return 1; | |
1016 | } | |
1017 | return hidpp_raw_hidpp_event(hidpp, data, size); | |
1018 | case REPORT_ID_HIDPP_SHORT: | |
1019 | if (size != HIDPP_REPORT_SHORT_LENGTH) { | |
1020 | hid_err(hdev, "received hid++ report of bad size (%d)", | |
1021 | size); | |
1022 | return 1; | |
1023 | } | |
1024 | return hidpp_raw_hidpp_event(hidpp, data, size); | |
1025 | } | |
1026 | ||
1027 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) | |
1028 | return wtp_raw_event(hdev, data, size); | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | ||
33797820 | 1033 | static void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying) |
2f31c525 BT |
1034 | { |
1035 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
1036 | char *name; | |
2f31c525 | 1037 | |
33797820 BT |
1038 | if (use_unifying) |
1039 | /* | |
1040 | * the device is connected through an Unifying receiver, and | |
1041 | * might not be already connected. | |
1042 | * Ask the receiver for its name. | |
1043 | */ | |
1044 | name = hidpp_get_unifying_name(hidpp); | |
1045 | else | |
02cc097e | 1046 | name = hidpp_get_device_name(hidpp); |
2f31c525 BT |
1047 | |
1048 | if (!name) | |
1049 | hid_err(hdev, "unable to retrieve the name of the device"); | |
1050 | else | |
1051 | snprintf(hdev->name, sizeof(hdev->name), "%s", name); | |
1052 | ||
1053 | kfree(name); | |
1054 | } | |
1055 | ||
c39e3d5f BT |
1056 | static int hidpp_input_open(struct input_dev *dev) |
1057 | { | |
1058 | struct hid_device *hid = input_get_drvdata(dev); | |
1059 | ||
1060 | return hid_hw_open(hid); | |
1061 | } | |
1062 | ||
1063 | static void hidpp_input_close(struct input_dev *dev) | |
1064 | { | |
1065 | struct hid_device *hid = input_get_drvdata(dev); | |
1066 | ||
1067 | hid_hw_close(hid); | |
1068 | } | |
1069 | ||
1070 | static struct input_dev *hidpp_allocate_input(struct hid_device *hdev) | |
1071 | { | |
1072 | struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev); | |
1073 | ||
1074 | if (!input_dev) | |
1075 | return NULL; | |
1076 | ||
1077 | input_set_drvdata(input_dev, hdev); | |
1078 | input_dev->open = hidpp_input_open; | |
1079 | input_dev->close = hidpp_input_close; | |
1080 | ||
1081 | input_dev->name = hdev->name; | |
1082 | input_dev->phys = hdev->phys; | |
1083 | input_dev->uniq = hdev->uniq; | |
1084 | input_dev->id.bustype = hdev->bus; | |
1085 | input_dev->id.vendor = hdev->vendor; | |
1086 | input_dev->id.product = hdev->product; | |
1087 | input_dev->id.version = hdev->version; | |
1088 | input_dev->dev.parent = &hdev->dev; | |
1089 | ||
1090 | return input_dev; | |
1091 | } | |
1092 | ||
1093 | static void hidpp_connect_event(struct hidpp_device *hidpp) | |
1094 | { | |
1095 | struct hid_device *hdev = hidpp->hid_dev; | |
1096 | int ret = 0; | |
1097 | bool connected = atomic_read(&hidpp->connected); | |
1098 | struct input_dev *input; | |
1099 | char *name, *devm_name; | |
c39e3d5f | 1100 | |
586bdc4e BT |
1101 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) |
1102 | wtp_connect(hdev, connected); | |
1103 | ||
c39e3d5f BT |
1104 | if (!connected || hidpp->delayed_input) |
1105 | return; | |
1106 | ||
1107 | if (!hidpp->protocol_major) { | |
1108 | ret = !hidpp_is_connected(hidpp); | |
1109 | if (ret) { | |
1110 | hid_err(hdev, "Can not get the protocol version.\n"); | |
1111 | return; | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | /* the device is already connected, we can ask for its name and | |
1116 | * protocol */ | |
1117 | hid_info(hdev, "HID++ %u.%u device connected.\n", | |
1118 | hidpp->protocol_major, hidpp->protocol_minor); | |
1119 | ||
1120 | input = hidpp_allocate_input(hdev); | |
1121 | if (!input) { | |
1122 | hid_err(hdev, "cannot allocate new input device: %d\n", ret); | |
1123 | return; | |
1124 | } | |
1125 | ||
02cc097e | 1126 | name = hidpp_get_device_name(hidpp); |
c39e3d5f BT |
1127 | if (!name) { |
1128 | hid_err(hdev, "unable to retrieve the name of the device"); | |
1129 | } else { | |
1130 | devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name); | |
1131 | if (devm_name) | |
1132 | input->name = devm_name; | |
1133 | kfree(name); | |
1134 | } | |
1135 | ||
1136 | hidpp_populate_input(hidpp, input, false); | |
1137 | ||
1138 | ret = input_register_device(input); | |
1139 | if (ret) | |
1140 | input_free_device(input); | |
1141 | ||
1142 | hidpp->delayed_input = input; | |
1143 | } | |
1144 | ||
2f31c525 BT |
1145 | static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) |
1146 | { | |
1147 | struct hidpp_device *hidpp; | |
1148 | int ret; | |
1149 | bool connected; | |
c39e3d5f | 1150 | unsigned int connect_mask = HID_CONNECT_DEFAULT; |
2f31c525 BT |
1151 | |
1152 | hidpp = devm_kzalloc(&hdev->dev, sizeof(struct hidpp_device), | |
1153 | GFP_KERNEL); | |
1154 | if (!hidpp) | |
1155 | return -ENOMEM; | |
1156 | ||
1157 | hidpp->hid_dev = hdev; | |
1158 | hid_set_drvdata(hdev, hidpp); | |
1159 | ||
1160 | hidpp->quirks = id->driver_data; | |
1161 | ||
1162 | if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { | |
1163 | ret = wtp_allocate(hdev, id); | |
1164 | if (ret) | |
f486d9db | 1165 | goto wtp_allocate_fail; |
2f31c525 BT |
1166 | } |
1167 | ||
c39e3d5f | 1168 | INIT_WORK(&hidpp->work, delayed_work_cb); |
2f31c525 BT |
1169 | mutex_init(&hidpp->send_mutex); |
1170 | init_waitqueue_head(&hidpp->wait); | |
1171 | ||
1172 | ret = hid_parse(hdev); | |
1173 | if (ret) { | |
1174 | hid_err(hdev, "%s:parse failed\n", __func__); | |
1175 | goto hid_parse_fail; | |
1176 | } | |
1177 | ||
1178 | /* Allow incoming packets */ | |
1179 | hid_device_io_start(hdev); | |
1180 | ||
1181 | connected = hidpp_is_connected(hidpp); | |
ab94e562 BT |
1182 | if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) { |
1183 | if (!connected) { | |
1184 | hid_err(hdev, "Device not connected"); | |
f486d9db | 1185 | hid_device_io_stop(hdev); |
ab94e562 BT |
1186 | goto hid_parse_fail; |
1187 | } | |
2f31c525 | 1188 | |
ab94e562 BT |
1189 | hid_info(hdev, "HID++ %u.%u device connected.\n", |
1190 | hidpp->protocol_major, hidpp->protocol_minor); | |
ab94e562 | 1191 | } |
2f31c525 | 1192 | |
33797820 | 1193 | hidpp_overwrite_name(hdev, id->group == HID_GROUP_LOGITECH_DJ_DEVICE); |
c39e3d5f | 1194 | atomic_set(&hidpp->connected, connected); |
33797820 | 1195 | |
c39e3d5f | 1196 | if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) { |
2f31c525 BT |
1197 | ret = wtp_get_config(hidpp); |
1198 | if (ret) | |
1199 | goto hid_parse_fail; | |
1200 | } | |
1201 | ||
1202 | /* Block incoming packets */ | |
1203 | hid_device_io_stop(hdev); | |
1204 | ||
c39e3d5f BT |
1205 | if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) |
1206 | connect_mask &= ~HID_CONNECT_HIDINPUT; | |
1207 | ||
3a61e975 BT |
1208 | /* Re-enable hidinput for multi-input devices */ |
1209 | if (hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT) | |
1210 | connect_mask |= HID_CONNECT_HIDINPUT; | |
1211 | ||
c39e3d5f | 1212 | ret = hid_hw_start(hdev, connect_mask); |
2f31c525 BT |
1213 | if (ret) { |
1214 | hid_err(hdev, "%s:hid_hw_start returned error\n", __func__); | |
1215 | goto hid_hw_start_fail; | |
1216 | } | |
1217 | ||
c39e3d5f BT |
1218 | if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) { |
1219 | /* Allow incoming packets */ | |
1220 | hid_device_io_start(hdev); | |
1221 | ||
1222 | hidpp_connect_event(hidpp); | |
1223 | } | |
1224 | ||
2f31c525 BT |
1225 | return ret; |
1226 | ||
1227 | hid_hw_start_fail: | |
1228 | hid_parse_fail: | |
c39e3d5f | 1229 | cancel_work_sync(&hidpp->work); |
2f31c525 | 1230 | mutex_destroy(&hidpp->send_mutex); |
f486d9db | 1231 | wtp_allocate_fail: |
2f31c525 BT |
1232 | hid_set_drvdata(hdev, NULL); |
1233 | return ret; | |
1234 | } | |
1235 | ||
1236 | static void hidpp_remove(struct hid_device *hdev) | |
1237 | { | |
1238 | struct hidpp_device *hidpp = hid_get_drvdata(hdev); | |
1239 | ||
c39e3d5f | 1240 | cancel_work_sync(&hidpp->work); |
2f31c525 BT |
1241 | mutex_destroy(&hidpp->send_mutex); |
1242 | hid_hw_stop(hdev); | |
1243 | } | |
1244 | ||
1245 | static const struct hid_device_id hidpp_devices[] = { | |
57ac86cf BT |
1246 | { /* wireless touchpad */ |
1247 | HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1248 | USB_VENDOR_ID_LOGITECH, 0x4011), | |
1249 | .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT | | |
1250 | HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS }, | |
586bdc4e BT |
1251 | { /* wireless touchpad T650 */ |
1252 | HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1253 | USB_VENDOR_ID_LOGITECH, 0x4101), | |
1254 | .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT }, | |
2f31c525 BT |
1255 | { /* wireless touchpad T651 */ |
1256 | HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, | |
1257 | USB_DEVICE_ID_LOGITECH_T651), | |
1258 | .driver_data = HIDPP_QUIRK_CLASS_WTP }, | |
3a61e975 BT |
1259 | { /* Keyboard TK820 */ |
1260 | HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1261 | USB_VENDOR_ID_LOGITECH, 0x4102), | |
1262 | .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_MULTI_INPUT | | |
1263 | HIDPP_QUIRK_CLASS_WTP }, | |
ab94e562 BT |
1264 | |
1265 | { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, | |
1266 | USB_VENDOR_ID_LOGITECH, HID_ANY_ID)}, | |
2f31c525 BT |
1267 | {} |
1268 | }; | |
1269 | ||
1270 | MODULE_DEVICE_TABLE(hid, hidpp_devices); | |
1271 | ||
1272 | static struct hid_driver hidpp_driver = { | |
1273 | .name = "logitech-hidpp-device", | |
1274 | .id_table = hidpp_devices, | |
1275 | .probe = hidpp_probe, | |
1276 | .remove = hidpp_remove, | |
1277 | .raw_event = hidpp_raw_event, | |
1278 | .input_configured = hidpp_input_configured, | |
1279 | .input_mapping = hidpp_input_mapping, | |
1280 | }; | |
1281 | ||
1282 | module_hid_driver(hidpp_driver); |