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