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Merge branch 'drm-rockchip-2015-07-13' of https://github.com/markyzq/kernel-drm-rockc...
[linux-2.6-block.git] / drivers / hid / hid-logitech-hidpp.c
CommitLineData
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
27MODULE_LICENSE("GPL");
28MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
29MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>");
30
9188dbae
BT		 31static bool disable_raw_mode;
32module_param(disable_raw_mode, bool, 0644);
33MODULE_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)
8a09b4fa 43#define HIDPP_QUIRK_CLASS_M560 BIT(1)
2f31c525 44
8a09b4fa 45/* bits 2..20 are reserved for classes */
c39e3d5f 46#define HIDPP_QUIRK_DELAYED_INIT BIT(21)
57ac86cf 47#define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22)
c39e3d5f 48
2f31c525
BT		 49/*
50 * There are two hidpp protocols in use, the first version hidpp10 is known
51 * as register access protocol or RAP, the second version hidpp20 is known as
52 * feature access protocol or FAP
53 *
54 * Most older devices (including the Unifying usb receiver) use the RAP protocol
55 * where as most newer devices use the FAP protocol. Both protocols are
56 * compatible with the underlying transport, which could be usb, Unifiying, or
57 * bluetooth. The message lengths are defined by the hid vendor specific report
58 * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and
59 * the HIDPP_LONG report type (total message length 20 bytes)
60 *
61 * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG
62 * messages. The Unifying receiver itself responds to RAP messages (device index
63 * is 0xFF for the receiver), and all messages (short or long) with a device
64 * index between 1 and 6 are passed untouched to the corresponding paired
65 * Unifying device.
66 *
67 * The paired device can be RAP or FAP, it will receive the message untouched
68 * from the Unifiying receiver.
69 */
70
71struct fap {
72 u8 feature_index;
73 u8 funcindex_clientid;
74 u8 params[HIDPP_REPORT_LONG_LENGTH - 4U];
75};
76
77struct rap {
78 u8 sub_id;
79 u8 reg_address;
80 u8 params[HIDPP_REPORT_LONG_LENGTH - 4U];
81};
82
83struct hidpp_report {
84 u8 report_id;
85 u8 device_index;
86 union {
87 struct fap fap;
88 struct rap rap;
89 u8 rawbytes[sizeof(struct fap)];
90 };
91} __packed;
92
93struct hidpp_device {
94 struct hid_device *hid_dev;
95 struct mutex send_mutex;
96 void *send_receive_buf;
005b3f57 97 char *name; /* will never be NULL and should not be freed */
2f31c525
BT		 98 wait_queue_head_t wait;
99 bool answer_available;
100 u8 protocol_major;
101 u8 protocol_minor;
102
103 void *private_data;
104
c39e3d5f
BT		 105 struct work_struct work;
106 struct kfifo delayed_work_fifo;
107 atomic_t connected;
108 struct input_dev *delayed_input;
109
2f31c525
BT		 110 unsigned long quirks;
111};
112
113
f677bb15 114/* HID++ 1.0 error codes */
2f31c525
BT		 115#define HIDPP_ERROR 0x8f
116#define HIDPP_ERROR_SUCCESS 0x00
117#define HIDPP_ERROR_INVALID_SUBID 0x01
118#define HIDPP_ERROR_INVALID_ADRESS 0x02
119#define HIDPP_ERROR_INVALID_VALUE 0x03
120#define HIDPP_ERROR_CONNECT_FAIL 0x04
121#define HIDPP_ERROR_TOO_MANY_DEVICES 0x05
122#define HIDPP_ERROR_ALREADY_EXISTS 0x06
123#define HIDPP_ERROR_BUSY 0x07
124#define HIDPP_ERROR_UNKNOWN_DEVICE 0x08
125#define HIDPP_ERROR_RESOURCE_ERROR 0x09
126#define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a
127#define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b
128#define HIDPP_ERROR_WRONG_PIN_CODE 0x0c
f677bb15
PW		 129/* HID++ 2.0 error codes */
130#define HIDPP20_ERROR 0xff
2f31c525 131
c39e3d5f
BT		 132static void hidpp_connect_event(struct hidpp_device *hidpp_dev);
133
2f31c525
BT		 134static int __hidpp_send_report(struct hid_device *hdev,
135 struct hidpp_report *hidpp_report)
136{
137 int fields_count, ret;
138
139 switch (hidpp_report->report_id) {
140 case REPORT_ID_HIDPP_SHORT:
141 fields_count = HIDPP_REPORT_SHORT_LENGTH;
142 break;
143 case REPORT_ID_HIDPP_LONG:
144 fields_count = HIDPP_REPORT_LONG_LENGTH;
145 break;
146 default:
147 return -ENODEV;
148 }
149
150 /*
151 * set the device_index as the receiver, it will be overwritten by
152 * hid_hw_request if needed
153 */
154 hidpp_report->device_index = 0xff;
155
156 ret = hid_hw_raw_request(hdev, hidpp_report->report_id,
157 (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT,
158 HID_REQ_SET_REPORT);
159
160 return ret == fields_count ? 0 : -1;
161}
162
8c9952b2
BT		 163/**
164 * hidpp_send_message_sync() returns 0 in case of success, and something else
165 * in case of a failure.
166 * - If ' something else' is positive, that means that an error has been raised
167 * by the protocol itself.
168 * - If ' something else' is negative, that means that we had a classic error
169 * (-ENOMEM, -EPIPE, etc...)
170 */
2f31c525
BT		 171static int hidpp_send_message_sync(struct hidpp_device *hidpp,
172 struct hidpp_report *message,
173 struct hidpp_report *response)
174{
175 int ret;
176
177 mutex_lock(&hidpp->send_mutex);
178
179 hidpp->send_receive_buf = response;
180 hidpp->answer_available = false;
181
182 /*
183 * So that we can later validate the answer when it arrives
184 * in hidpp_raw_event
185 */
186 *response = *message;
187
188 ret = __hidpp_send_report(hidpp->hid_dev, message);
189
190 if (ret) {
191 dbg_hid("__hidpp_send_report returned err: %d\n", ret);
192 memset(response, 0, sizeof(struct hidpp_report));
193 goto exit;
194 }
195
196 if (!wait_event_timeout(hidpp->wait, hidpp->answer_available,
197 5*HZ)) {
198 dbg_hid("%s:timeout waiting for response\n", __func__);
199 memset(response, 0, sizeof(struct hidpp_report));
200 ret = -ETIMEDOUT;
201 }
202
203 if (response->report_id == REPORT_ID_HIDPP_SHORT &&
f677bb15
PW		 204 response->rap.sub_id == HIDPP_ERROR) {
205 ret = response->rap.params[1];
206 dbg_hid("%s:got hidpp error %02X\n", __func__, ret);
207 goto exit;
208 }
209
210 if (response->report_id == REPORT_ID_HIDPP_LONG &&
211 response->fap.feature_index == HIDPP20_ERROR) {
2f31c525 212 ret = response->fap.params[1];
f677bb15 213 dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret);
2f31c525
BT		 214 goto exit;
215 }
216
217exit:
218 mutex_unlock(&hidpp->send_mutex);
219 return ret;
220
221}
222
223static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp,
224 u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count,
225 struct hidpp_report *response)
226{
3e7830ce 227 struct hidpp_report *message;
2f31c525
BT		 228 int ret;
229
230 if (param_count > sizeof(message->fap.params))
231 return -EINVAL;
232
3e7830ce
DC		 233 message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
234 if (!message)
235 return -ENOMEM;
2f31c525
BT		 236 message->report_id = REPORT_ID_HIDPP_LONG;
237 message->fap.feature_index = feat_index;
238 message->fap.funcindex_clientid = funcindex_clientid;
239 memcpy(&message->fap.params, params, param_count);
240
241 ret = hidpp_send_message_sync(hidpp, message, response);
242 kfree(message);
243 return ret;
244}
245
33797820
BT		 246static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
247 u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count,
248 struct hidpp_report *response)
249{
3e7830ce 250 struct hidpp_report *message;
33797820
BT		 251 int ret;
252
253 if ((report_id != REPORT_ID_HIDPP_SHORT) &&
254 (report_id != REPORT_ID_HIDPP_LONG))
255 return -EINVAL;
256
257 if (param_count > sizeof(message->rap.params))
258 return -EINVAL;
259
3e7830ce
DC		 260 message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
261 if (!message)
262 return -ENOMEM;
33797820
BT		 263 message->report_id = report_id;
264 message->rap.sub_id = sub_id;
265 message->rap.reg_address = reg_address;
266 memcpy(&message->rap.params, params, param_count);
267
268 ret = hidpp_send_message_sync(hidpp_dev, message, response);
269 kfree(message);
270 return ret;
271}
272
c39e3d5f
BT		 273static void delayed_work_cb(struct work_struct *work)
274{
275 struct hidpp_device *hidpp = container_of(work, struct hidpp_device,
276 work);
277 hidpp_connect_event(hidpp);
278}
279
2f31c525
BT		 280static inline bool hidpp_match_answer(struct hidpp_report *question,
281 struct hidpp_report *answer)
282{
283 return (answer->fap.feature_index == question->fap.feature_index) &&
284 (answer->fap.funcindex_clientid == question->fap.funcindex_clientid);
285}
286
287static inline bool hidpp_match_error(struct hidpp_report *question,
288 struct hidpp_report *answer)
289{
f677bb15
PW		 290 return ((answer->rap.sub_id == HIDPP_ERROR) ||
291 (answer->fap.feature_index == HIDPP20_ERROR)) &&
2f31c525
BT		 292 (answer->fap.funcindex_clientid == question->fap.feature_index) &&
293 (answer->fap.params[0] == question->fap.funcindex_clientid);
294}
295
c39e3d5f
BT		 296static inline bool hidpp_report_is_connect_event(struct hidpp_report *report)
297{
298 return (report->report_id == REPORT_ID_HIDPP_SHORT) &&
299 (report->rap.sub_id == 0x41);
300}
301
a0e625f8
BT		 302/**
303 * hidpp_prefix_name() prefixes the current given name with "Logitech ".
304 */
305static void hidpp_prefix_name(char **name, int name_length)
306{
307#define PREFIX_LENGTH 9 /* "Logitech " */
308
309 int new_length;
310 char *new_name;
311
312 if (name_length > PREFIX_LENGTH &&
313 strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0)
314 /* The prefix has is already in the name */
315 return;
316
317 new_length = PREFIX_LENGTH + name_length;
318 new_name = kzalloc(new_length, GFP_KERNEL);
319 if (!new_name)
320 return;
321
322 snprintf(new_name, new_length, "Logitech %s", *name);
323
324 kfree(*name);
325
326 *name = new_name;
327}
328
33797820
BT		 329/* -------------------------------------------------------------------------- */
330/* HIDP++ 1.0 commands */
331/* -------------------------------------------------------------------------- */
332
333#define HIDPP_SET_REGISTER 0x80
334#define HIDPP_GET_REGISTER 0x81
335#define HIDPP_SET_LONG_REGISTER 0x82
336#define HIDPP_GET_LONG_REGISTER 0x83
337
338#define HIDPP_REG_PAIRING_INFORMATION 0xB5
339#define DEVICE_NAME 0x40
340
341static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev)
342{
343 struct hidpp_report response;
344 int ret;
345 /* hid-logitech-dj is in charge of setting the right device index */
346 u8 params[1] = { DEVICE_NAME };
347 char *name;
348 int len;
349
350 ret = hidpp_send_rap_command_sync(hidpp_dev,
351 REPORT_ID_HIDPP_SHORT,
352 HIDPP_GET_LONG_REGISTER,
353 HIDPP_REG_PAIRING_INFORMATION,
354 params, 1, &response);
355 if (ret)
356 return NULL;
357
358 len = response.rap.params[1];
359
3a034a7a
PW		 360 if (2 + len > sizeof(response.rap.params))
361 return NULL;
362
33797820
BT		 363 name = kzalloc(len + 1, GFP_KERNEL);
364 if (!name)
365 return NULL;
366
367 memcpy(name, &response.rap.params[2], len);
a0e625f8
BT		 368
369 /* include the terminating '\0' */
370 hidpp_prefix_name(&name, len + 1);
371
33797820
BT		 372 return name;
373}
374
2f31c525
BT		 375/* -------------------------------------------------------------------------- */
376/* 0x0000: Root */
377/* -------------------------------------------------------------------------- */
378
379#define HIDPP_PAGE_ROOT 0x0000
380#define HIDPP_PAGE_ROOT_IDX 0x00
381
382#define CMD_ROOT_GET_FEATURE 0x01
383#define CMD_ROOT_GET_PROTOCOL_VERSION 0x11
384
385static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature,
386 u8 *feature_index, u8 *feature_type)
387{
388 struct hidpp_report response;
389 int ret;
390 u8 params[2] = { feature >> 8, feature & 0x00FF };
391
392 ret = hidpp_send_fap_command_sync(hidpp,
393 HIDPP_PAGE_ROOT_IDX,
394 CMD_ROOT_GET_FEATURE,
395 params, 2, &response);
396 if (ret)
397 return ret;
398
399 *feature_index = response.fap.params[0];
400 *feature_type = response.fap.params[1];
401
402 return ret;
403}
404
405static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp)
406{
407 struct hidpp_report response;
408 int ret;
409
410 ret = hidpp_send_fap_command_sync(hidpp,
411 HIDPP_PAGE_ROOT_IDX,
412 CMD_ROOT_GET_PROTOCOL_VERSION,
413 NULL, 0, &response);
414
552f12eb 415 if (ret == HIDPP_ERROR_INVALID_SUBID) {
2f31c525
BT		 416 hidpp->protocol_major = 1;
417 hidpp->protocol_minor = 0;
418 return 0;
419 }
420
552f12eb
BT		 421 /* the device might not be connected */
422 if (ret == HIDPP_ERROR_RESOURCE_ERROR)
423 return -EIO;
424
8c9952b2
BT		 425 if (ret > 0) {
426 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
427 __func__, ret);
428 return -EPROTO;
429 }
2f31c525 430 if (ret)
8c9952b2 431 return ret;
2f31c525
BT		 432
433 hidpp->protocol_major = response.fap.params[0];
434 hidpp->protocol_minor = response.fap.params[1];
435
436 return ret;
437}
438
439static bool hidpp_is_connected(struct hidpp_device *hidpp)
440{
441 int ret;
442
443 ret = hidpp_root_get_protocol_version(hidpp);
444 if (!ret)
445 hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n",
446 hidpp->protocol_major, hidpp->protocol_minor);
447 return ret == 0;
448}
449
450/* -------------------------------------------------------------------------- */
451/* 0x0005: GetDeviceNameType */
452/* -------------------------------------------------------------------------- */
453
454#define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005
455
456#define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x01
457#define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x11
458#define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x21
459
460static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp,
461 u8 feature_index, u8 *nameLength)
462{
463 struct hidpp_report response;
464 int ret;
465
466 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
467 CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response);
468
8c9952b2
BT		 469 if (ret > 0) {
470 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
471 __func__, ret);
472 return -EPROTO;
473 }
2f31c525 474 if (ret)
8c9952b2 475 return ret;
2f31c525
BT		 476
477 *nameLength = response.fap.params[0];
478
479 return ret;
480}
481
482static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp,
483 u8 feature_index, u8 char_index, char *device_name, int len_buf)
484{
485 struct hidpp_report response;
486 int ret, i;
487 int count;
488
489 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
490 CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1,
491 &response);
492
8c9952b2
BT		 493 if (ret > 0) {
494 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
495 __func__, ret);
496 return -EPROTO;
497 }
2f31c525 498 if (ret)
8c9952b2 499 return ret;
2f31c525
BT		 500
501 if (response.report_id == REPORT_ID_HIDPP_LONG)
502 count = HIDPP_REPORT_LONG_LENGTH - 4;
503 else
504 count = HIDPP_REPORT_SHORT_LENGTH - 4;
505
506 if (len_buf < count)
507 count = len_buf;
508
509 for (i = 0; i < count; i++)
510 device_name[i] = response.fap.params[i];
511
512 return count;
513}
514
02cc097e 515static char *hidpp_get_device_name(struct hidpp_device *hidpp)
2f31c525
BT		 516{
517 u8 feature_type;
518 u8 feature_index;
519 u8 __name_length;
520 char *name;
521 unsigned index = 0;
522 int ret;
523
524 ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE,
525 &feature_index, &feature_type);
526 if (ret)
02cc097e 527 return NULL;
2f31c525
BT		 528
529 ret = hidpp_devicenametype_get_count(hidpp, feature_index,
530 &__name_length);
531 if (ret)
02cc097e 532 return NULL;
2f31c525
BT		 533
534 name = kzalloc(__name_length + 1, GFP_KERNEL);
535 if (!name)
02cc097e 536 return NULL;
2f31c525 537
1430ee73
PW		 538 while (index < __name_length) {
539 ret = hidpp_devicenametype_get_device_name(hidpp,
2f31c525
BT		 540 feature_index, index, name + index,
541 __name_length - index);
1430ee73
PW		 542 if (ret <= 0) {
543 kfree(name);
544 return NULL;
545 }
546 index += ret;
547 }
2f31c525 548
a0e625f8
BT		 549 /* include the terminating '\0' */
550 hidpp_prefix_name(&name, __name_length + 1);
551
2f31c525 552 return name;
2f31c525
BT		 553}
554
555/* -------------------------------------------------------------------------- */
556/* 0x6100: TouchPadRawXY */
557/* -------------------------------------------------------------------------- */
558
559#define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100
560
561#define CMD_TOUCHPAD_GET_RAW_INFO 0x01
586bdc4e
BT		 562#define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21
563
564#define EVENT_TOUCHPAD_RAW_XY 0x00
2f31c525
BT		 565
566#define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01
567#define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03
568
569struct hidpp_touchpad_raw_info {
570 u16 x_size;
571 u16 y_size;
572 u8 z_range;
573 u8 area_range;
574 u8 timestamp_unit;
575 u8 maxcontacts;
576 u8 origin;
577 u16 res;
578};
579
580struct hidpp_touchpad_raw_xy_finger {
581 u8 contact_type;
582 u8 contact_status;
583 u16 x;
584 u16 y;
585 u8 z;
586 u8 area;
587 u8 finger_id;
588};
589
590struct hidpp_touchpad_raw_xy {
591 u16 timestamp;
592 struct hidpp_touchpad_raw_xy_finger fingers[2];
593 u8 spurious_flag;
594 u8 end_of_frame;
595 u8 finger_count;
596 u8 button;
597};
598
599static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp,
600 u8 feature_index, struct hidpp_touchpad_raw_info *raw_info)
601{
602 struct hidpp_report response;
603 int ret;
604 u8 *params = (u8 *)response.fap.params;
605
606 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
607 CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response);
608
8c9952b2
BT		 609 if (ret > 0) {
610 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
611 __func__, ret);
612 return -EPROTO;
613 }
2f31c525 614 if (ret)
8c9952b2 615 return ret;
2f31c525
BT		 616
617 raw_info->x_size = get_unaligned_be16(&params[0]);
618 raw_info->y_size = get_unaligned_be16(&params[2]);
619 raw_info->z_range = params[4];
620 raw_info->area_range = params[5];
621 raw_info->maxcontacts = params[7];
622 raw_info->origin = params[8];
623 /* res is given in unit per inch */
624 raw_info->res = get_unaligned_be16(&params[13]) * 2 / 51;
625
626 return ret;
627}
628
586bdc4e
BT		 629static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev,
630 u8 feature_index, bool send_raw_reports,
631 bool sensor_enhanced_settings)
632{
633 struct hidpp_report response;
634
635 /*
636 * Params:
637 * bit 0 - enable raw
638 * bit 1 - 16bit Z, no area
639 * bit 2 - enhanced sensitivity
640 * bit 3 - width, height (4 bits each) instead of area
641 * bit 4 - send raw + gestures (degrades smoothness)
642 * remaining bits - reserved
643 */
644 u8 params = send_raw_reports | (sensor_enhanced_settings << 2);
645
646 return hidpp_send_fap_command_sync(hidpp_dev, feature_index,
647 CMD_TOUCHPAD_SET_RAW_REPORT_STATE, &params, 1, &response);
648}
649
650static void hidpp_touchpad_touch_event(u8 *data,
651 struct hidpp_touchpad_raw_xy_finger *finger)
652{
653 u8 x_m = data[0] << 2;
654 u8 y_m = data[2] << 2;
655
656 finger->x = x_m << 6 | data[1];
657 finger->y = y_m << 6 | data[3];
658
659 finger->contact_type = data[0] >> 6;
660 finger->contact_status = data[2] >> 6;
661
662 finger->z = data[4];
663 finger->area = data[5];
664 finger->finger_id = data[6] >> 4;
665}
666
667static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev,
668 u8 *data, struct hidpp_touchpad_raw_xy *raw_xy)
669{
670 memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy));
671 raw_xy->end_of_frame = data[8] & 0x01;
672 raw_xy->spurious_flag = (data[8] >> 1) & 0x01;
673 raw_xy->finger_count = data[15] & 0x0f;
674 raw_xy->button = (data[8] >> 2) & 0x01;
675
676 if (raw_xy->finger_count) {
677 hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]);
678 hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]);
679 }
680}
681
2f31c525
BT		 682/* ************************************************************************** */
683/* */
684/* Device Support */
685/* */
686/* ************************************************************************** */
687
688/* -------------------------------------------------------------------------- */
689/* Touchpad HID++ devices */
690/* -------------------------------------------------------------------------- */
691
57ac86cf
BT		 692#define WTP_MANUAL_RESOLUTION 39
693
2f31c525
BT		 694struct wtp_data {
695 struct input_dev *input;
696 u16 x_size, y_size;
697 u8 finger_count;
698 u8 mt_feature_index;
699 u8 button_feature_index;
700 u8 maxcontacts;
701 bool flip_y;
702 unsigned int resolution;
703};
704
705static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
706 struct hid_field *field, struct hid_usage *usage,
707 unsigned long **bit, int *max)
708{
709 return -1;
710}
711
c39e3d5f
BT		 712static void wtp_populate_input(struct hidpp_device *hidpp,
713 struct input_dev *input_dev, bool origin_is_hid_core)
2f31c525 714{
2f31c525 715 struct wtp_data *wd = hidpp->private_data;
2f31c525
BT		 716
717 __set_bit(EV_ABS, input_dev->evbit);
718 __set_bit(EV_KEY, input_dev->evbit);
719 __clear_bit(EV_REL, input_dev->evbit);
720 __clear_bit(EV_LED, input_dev->evbit);
721
722 input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0);
723 input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution);
724 input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0);
725 input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution);
726
727 /* Max pressure is not given by the devices, pick one */
728 input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0);
729
730 input_set_capability(input_dev, EV_KEY, BTN_LEFT);
731
57ac86cf
BT		 732 if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)
733 input_set_capability(input_dev, EV_KEY, BTN_RIGHT);
734 else
735 __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
2f31c525
BT		 736
737 input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER |
738 INPUT_MT_DROP_UNUSED);
739
740 wd->input = input_dev;
741}
742
743static void wtp_touch_event(struct wtp_data *wd,
744 struct hidpp_touchpad_raw_xy_finger *touch_report)
745{
746 int slot;
747
748 if (!touch_report->finger_id || touch_report->contact_type)
749 /* no actual data */
750 return;
751
752 slot = input_mt_get_slot_by_key(wd->input, touch_report->finger_id);
753
754 input_mt_slot(wd->input, slot);
755 input_mt_report_slot_state(wd->input, MT_TOOL_FINGER,
756 touch_report->contact_status);
757 if (touch_report->contact_status) {
758 input_event(wd->input, EV_ABS, ABS_MT_POSITION_X,
759 touch_report->x);
760 input_event(wd->input, EV_ABS, ABS_MT_POSITION_Y,
761 wd->flip_y ? wd->y_size - touch_report->y :
762 touch_report->y);
763 input_event(wd->input, EV_ABS, ABS_MT_PRESSURE,
764 touch_report->area);
765 }
766}
767
768static void wtp_send_raw_xy_event(struct hidpp_device *hidpp,
769 struct hidpp_touchpad_raw_xy *raw)
770{
771 struct wtp_data *wd = hidpp->private_data;
772 int i;
773
774 for (i = 0; i < 2; i++)
775 wtp_touch_event(wd, &(raw->fingers[i]));
776
57ac86cf
BT		 777 if (raw->end_of_frame &&
778 !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS))
2f31c525
BT		 779 input_event(wd->input, EV_KEY, BTN_LEFT, raw->button);
780
781 if (raw->end_of_frame || raw->finger_count <= 2) {
782 input_mt_sync_frame(wd->input);
783 input_sync(wd->input);
784 }
785}
786
787static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data)
788{
789 struct wtp_data *wd = hidpp->private_data;
790 u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) +
791 (data[7] >> 4) * (data[7] >> 4)) / 2;
792 u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) +
793 (data[13] >> 4) * (data[13] >> 4)) / 2;
794 struct hidpp_touchpad_raw_xy raw = {
795 .timestamp = data[1],
796 .fingers = {
797 {
798 .contact_type = 0,
799 .contact_status = !!data[7],
800 .x = get_unaligned_le16(&data[3]),
801 .y = get_unaligned_le16(&data[5]),
802 .z = c1_area,
803 .area = c1_area,
804 .finger_id = data[2],
805 }, {
806 .contact_type = 0,
807 .contact_status = !!data[13],
808 .x = get_unaligned_le16(&data[9]),
809 .y = get_unaligned_le16(&data[11]),
810 .z = c2_area,
811 .area = c2_area,
812 .finger_id = data[8],
813 }
814 },
815 .finger_count = wd->maxcontacts,
816 .spurious_flag = 0,
817 .end_of_frame = (data[0] >> 7) == 0,
818 .button = data[0] & 0x01,
819 };
820
821 wtp_send_raw_xy_event(hidpp, &raw);
822
823 return 1;
824}
825
826static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size)
827{
828 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
829 struct wtp_data *wd = hidpp->private_data;
586bdc4e
BT		 830 struct hidpp_report *report = (struct hidpp_report *)data;
831 struct hidpp_touchpad_raw_xy raw;
2f31c525 832
586bdc4e 833 if (!wd || !wd->input)
2f31c525
BT		 834 return 1;
835
586bdc4e
BT		 836 switch (data[0]) {
837 case 0x02:
0b3f6569
PW		 838 if (size < 2) {
839 hid_err(hdev, "Received HID report of bad size (%d)",
840 size);
841 return 1;
842 }
57ac86cf
BT		 843 if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) {
844 input_event(wd->input, EV_KEY, BTN_LEFT,
845 !!(data[1] & 0x01));
846 input_event(wd->input, EV_KEY, BTN_RIGHT,
847 !!(data[1] & 0x02));
848 input_sync(wd->input);
8abd8205 849 return 0;
57ac86cf
BT		 850 } else {
851 if (size < 21)
852 return 1;
853 return wtp_mouse_raw_xy_event(hidpp, &data[7]);
854 }
586bdc4e 855 case REPORT_ID_HIDPP_LONG:
0b3f6569 856 /* size is already checked in hidpp_raw_event. */
586bdc4e
BT		 857 if ((report->fap.feature_index != wd->mt_feature_index) ||
858 (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY))
859 return 1;
860 hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw);
861
862 wtp_send_raw_xy_event(hidpp, &raw);
863 return 0;
864 }
865
866 return 0;
2f31c525
BT		 867}
868
869static int wtp_get_config(struct hidpp_device *hidpp)
870{
871 struct wtp_data *wd = hidpp->private_data;
872 struct hidpp_touchpad_raw_info raw_info = {0};
873 u8 feature_type;
874 int ret;
875
876 ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY,
877 &wd->mt_feature_index, &feature_type);
878 if (ret)
879 /* means that the device is not powered up */
880 return ret;
881
882 ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index,
883 &raw_info);
884 if (ret)
885 return ret;
886
887 wd->x_size = raw_info.x_size;
888 wd->y_size = raw_info.y_size;
889 wd->maxcontacts = raw_info.maxcontacts;
890 wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT;
891 wd->resolution = raw_info.res;
57ac86cf
BT		 892 if (!wd->resolution)
893 wd->resolution = WTP_MANUAL_RESOLUTION;
2f31c525
BT		 894
895 return 0;
896}
897
898static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id)
899{
900 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
901 struct wtp_data *wd;
902
903 wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data),
904 GFP_KERNEL);
905 if (!wd)
906 return -ENOMEM;
907
908 hidpp->private_data = wd;
909
910 return 0;
911};
912
bf159447 913static int wtp_connect(struct hid_device *hdev, bool connected)
586bdc4e
BT		 914{
915 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
916 struct wtp_data *wd = hidpp->private_data;
917 int ret;
918
919 if (!connected)
bf159447 920 return 0;
586bdc4e
BT		 921
922 if (!wd->x_size) {
923 ret = wtp_get_config(hidpp);
924 if (ret) {
925 hid_err(hdev, "Can not get wtp config: %d\n", ret);
bf159447 926 return ret;
586bdc4e
BT		 927 }
928 }
929
bf159447 930 return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
586bdc4e
BT		 931 true, true);
932}
933
8a09b4fa
GB		 934/* ------------------------------------------------------------------------- */
935/* Logitech M560 devices */
936/* ------------------------------------------------------------------------- */
937
938/*
939 * Logitech M560 protocol overview
940 *
941 * The Logitech M560 mouse, is designed for windows 8. When the middle and/or
942 * the sides buttons are pressed, it sends some keyboard keys events
943 * instead of buttons ones.
944 * To complicate things further, the middle button keys sequence
945 * is different from the odd press and the even press.
946 *
947 * forward button -> Super_R
948 * backward button -> Super_L+'d' (press only)
949 * middle button -> 1st time: Alt_L+SuperL+XF86TouchpadOff (press only)
950 * 2nd time: left-click (press only)
951 * NB: press-only means that when the button is pressed, the
952 * KeyPress/ButtonPress and KeyRelease/ButtonRelease events are generated
953 * together sequentially; instead when the button is released, no event is
954 * generated !
955 *
956 * With the command
957 * 10<xx>0a 3500af03 (where <xx> is the mouse id),
958 * the mouse reacts differently:
959 * - it never sends a keyboard key event
960 * - for the three mouse button it sends:
961 * middle button press 11<xx>0a 3500af00...
962 * side 1 button (forward) press 11<xx>0a 3500b000...
963 * side 2 button (backward) press 11<xx>0a 3500ae00...
964 * middle/side1/side2 button release 11<xx>0a 35000000...
965 */
966
967static const u8 m560_config_parameter[] = {0x00, 0xaf, 0x03};
968
969struct m560_private_data {
970 struct input_dev *input;
971};
972
973/* how buttons are mapped in the report */
974#define M560_MOUSE_BTN_LEFT 0x01
975#define M560_MOUSE_BTN_RIGHT 0x02
976#define M560_MOUSE_BTN_WHEEL_LEFT 0x08
977#define M560_MOUSE_BTN_WHEEL_RIGHT 0x10
978
979#define M560_SUB_ID 0x0a
980#define M560_BUTTON_MODE_REGISTER 0x35
981
982static int m560_send_config_command(struct hid_device *hdev, bool connected)
983{
984 struct hidpp_report response;
985 struct hidpp_device *hidpp_dev;
986
987 hidpp_dev = hid_get_drvdata(hdev);
988
989 if (!connected)
990 return -ENODEV;
991
992 return hidpp_send_rap_command_sync(
993 hidpp_dev,
994 REPORT_ID_HIDPP_SHORT,
995 M560_SUB_ID,
996 M560_BUTTON_MODE_REGISTER,
997 (u8 *)m560_config_parameter,
998 sizeof(m560_config_parameter),
999 &response
1000 );
1001}
1002
1003static int m560_allocate(struct hid_device *hdev)
1004{
1005 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1006 struct m560_private_data *d;
1007
1008 d = devm_kzalloc(&hdev->dev, sizeof(struct m560_private_data),
1009 GFP_KERNEL);
1010 if (!d)
1011 return -ENOMEM;
1012
1013 hidpp->private_data = d;
1014
1015 return 0;
1016};
1017
1018static int m560_raw_event(struct hid_device *hdev, u8 *data, int size)
1019{
1020 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1021 struct m560_private_data *mydata = hidpp->private_data;
1022
1023 /* sanity check */
1024 if (!mydata || !mydata->input) {
1025 hid_err(hdev, "error in parameter\n");
1026 return -EINVAL;
1027 }
1028
1029 if (size < 7) {
1030 hid_err(hdev, "error in report\n");
1031 return 0;
1032 }
1033
1034 if (data[0] == REPORT_ID_HIDPP_LONG &&
1035 data[2] == M560_SUB_ID && data[6] == 0x00) {
1036 /*
1037 * m560 mouse report for middle, forward and backward button
1038 *
1039 * data[0] = 0x11
1040 * data[1] = device-id
1041 * data[2] = 0x0a
1042 * data[5] = 0xaf -> middle
1043 * 0xb0 -> forward
1044 * 0xae -> backward
1045 * 0x00 -> release all
1046 * data[6] = 0x00
1047 */
1048
1049 switch (data[5]) {
1050 case 0xaf:
1051 input_report_key(mydata->input, BTN_MIDDLE, 1);
1052 break;
1053 case 0xb0:
1054 input_report_key(mydata->input, BTN_FORWARD, 1);
1055 break;
1056 case 0xae:
1057 input_report_key(mydata->input, BTN_BACK, 1);
1058 break;
1059 case 0x00:
1060 input_report_key(mydata->input, BTN_BACK, 0);
1061 input_report_key(mydata->input, BTN_FORWARD, 0);
1062 input_report_key(mydata->input, BTN_MIDDLE, 0);
1063 break;
1064 default:
1065 hid_err(hdev, "error in report\n");
1066 return 0;
1067 }
1068 input_sync(mydata->input);
1069
1070 } else if (data[0] == 0x02) {
1071 /*
1072 * Logitech M560 mouse report
1073 *
1074 * data[0] = type (0x02)
1075 * data[1..2] = buttons
1076 * data[3..5] = xy
1077 * data[6] = wheel
1078 */
1079
1080 int v;
1081
1082 input_report_key(mydata->input, BTN_LEFT,
1083 !!(data[1] & M560_MOUSE_BTN_LEFT));
1084 input_report_key(mydata->input, BTN_RIGHT,
1085 !!(data[1] & M560_MOUSE_BTN_RIGHT));
1086
1087 if (data[1] & M560_MOUSE_BTN_WHEEL_LEFT)
1088 input_report_rel(mydata->input, REL_HWHEEL, -1);
1089 else if (data[1] & M560_MOUSE_BTN_WHEEL_RIGHT)
1090 input_report_rel(mydata->input, REL_HWHEEL, 1);
1091
1092 v = hid_snto32(hid_field_extract(hdev, data+3, 0, 12), 12);
1093 input_report_rel(mydata->input, REL_X, v);
1094
1095 v = hid_snto32(hid_field_extract(hdev, data+3, 12, 12), 12);
1096 input_report_rel(mydata->input, REL_Y, v);
1097
1098 v = hid_snto32(data[6], 8);
1099 input_report_rel(mydata->input, REL_WHEEL, v);
1100
1101 input_sync(mydata->input);
1102 }
1103
1104 return 1;
1105}
1106
1107static void m560_populate_input(struct hidpp_device *hidpp,
1108 struct input_dev *input_dev, bool origin_is_hid_core)
1109{
1110 struct m560_private_data *mydata = hidpp->private_data;
1111
1112 mydata->input = input_dev;
1113
1114 __set_bit(EV_KEY, mydata->input->evbit);
1115 __set_bit(BTN_MIDDLE, mydata->input->keybit);
1116 __set_bit(BTN_RIGHT, mydata->input->keybit);
1117 __set_bit(BTN_LEFT, mydata->input->keybit);
1118 __set_bit(BTN_BACK, mydata->input->keybit);
1119 __set_bit(BTN_FORWARD, mydata->input->keybit);
1120
1121 __set_bit(EV_REL, mydata->input->evbit);
1122 __set_bit(REL_X, mydata->input->relbit);
1123 __set_bit(REL_Y, mydata->input->relbit);
1124 __set_bit(REL_WHEEL, mydata->input->relbit);
1125 __set_bit(REL_HWHEEL, mydata->input->relbit);
1126}
1127
1128static int m560_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1129 struct hid_field *field, struct hid_usage *usage,
1130 unsigned long **bit, int *max)
1131{
1132 return -1;
1133}
1134
2f31c525
BT		 1135/* -------------------------------------------------------------------------- */
1136/* Generic HID++ devices */
1137/* -------------------------------------------------------------------------- */
1138
1139static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1140 struct hid_field *field, struct hid_usage *usage,
1141 unsigned long **bit, int *max)
1142{
1143 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1144
1145 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
1146 return wtp_input_mapping(hdev, hi, field, usage, bit, max);
8a09b4fa
GB		 1147 else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560 &&
1148 field->application != HID_GD_MOUSE)
1149 return m560_input_mapping(hdev, hi, field, usage, bit, max);
2f31c525
BT		 1150
1151 return 0;
1152}
1153
c39e3d5f
BT		 1154static void hidpp_populate_input(struct hidpp_device *hidpp,
1155 struct input_dev *input, bool origin_is_hid_core)
1156{
1157 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
1158 wtp_populate_input(hidpp, input, origin_is_hid_core);
8a09b4fa
GB		 1159 else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)
1160 m560_populate_input(hidpp, input, origin_is_hid_core);
c39e3d5f
BT		 1161}
1162
2f31c525
BT		 1163static void hidpp_input_configured(struct hid_device *hdev,
1164 struct hid_input *hidinput)
1165{
1166 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
c39e3d5f 1167 struct input_dev *input = hidinput->input;
2f31c525 1168
c39e3d5f 1169 hidpp_populate_input(hidpp, input, true);
2f31c525
BT		 1170}
1171
1172static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
1173 int size)
1174{
1175 struct hidpp_report *question = hidpp->send_receive_buf;
1176 struct hidpp_report *answer = hidpp->send_receive_buf;
1177 struct hidpp_report *report = (struct hidpp_report *)data;
1178
1179 /*
1180 * If the mutex is locked then we have a pending answer from a
e529fea9 1181 * previously sent command.
2f31c525
BT		 1182 */
1183 if (unlikely(mutex_is_locked(&hidpp->send_mutex))) {
1184 /*
1185 * Check for a correct hidpp20 answer or the corresponding
1186 * error
1187 */
1188 if (hidpp_match_answer(question, report) ||
1189 hidpp_match_error(question, report)) {
1190 *answer = *report;
1191 hidpp->answer_available = true;
1192 wake_up(&hidpp->wait);
1193 /*
1194 * This was an answer to a command that this driver sent
1195 * We return 1 to hid-core to avoid forwarding the
1196 * command upstream as it has been treated by the driver
1197 */
1198
1199 return 1;
1200 }
1201 }
1202
c39e3d5f
BT		 1203 if (unlikely(hidpp_report_is_connect_event(report))) {
1204 atomic_set(&hidpp->connected,
1205 !(report->rap.params[0] & (1 << 6)));
1206 if ((hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) &&
1207 (schedule_work(&hidpp->work) == 0))
1208 dbg_hid("%s: connect event already queued\n", __func__);
1209 return 1;
1210 }
1211
2f31c525
BT		 1212 return 0;
1213}
1214
1215static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report,
1216 u8 *data, int size)
1217{
1218 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
e529fea9 1219 int ret = 0;
2f31c525 1220
e529fea9 1221 /* Generic HID++ processing. */
2f31c525
BT		 1222 switch (data[0]) {
1223 case REPORT_ID_HIDPP_LONG:
1224 if (size != HIDPP_REPORT_LONG_LENGTH) {
1225 hid_err(hdev, "received hid++ report of bad size (%d)",
1226 size);
1227 return 1;
1228 }
e529fea9
PW		 1229 ret = hidpp_raw_hidpp_event(hidpp, data, size);
1230 break;
2f31c525
BT		 1231 case REPORT_ID_HIDPP_SHORT:
1232 if (size != HIDPP_REPORT_SHORT_LENGTH) {
1233 hid_err(hdev, "received hid++ report of bad size (%d)",
1234 size);
1235 return 1;
1236 }
e529fea9
PW		 1237 ret = hidpp_raw_hidpp_event(hidpp, data, size);
1238 break;
2f31c525
BT		 1239 }
1240
e529fea9
PW		 1241 /* If no report is available for further processing, skip calling
1242 * raw_event of subclasses. */
1243 if (ret != 0)
1244 return ret;
1245
2f31c525
BT		 1246 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
1247 return wtp_raw_event(hdev, data, size);
8a09b4fa
GB		 1248 else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)
1249 return m560_raw_event(hdev, data, size);
2f31c525
BT		 1250
1251 return 0;
1252}
1253
33797820 1254static void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying)
2f31c525
BT		 1255{
1256 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1257 char *name;
2f31c525 1258
33797820
BT		 1259 if (use_unifying)
1260 /*
1261 * the device is connected through an Unifying receiver, and
1262 * might not be already connected.
1263 * Ask the receiver for its name.
1264 */
1265 name = hidpp_get_unifying_name(hidpp);
1266 else
02cc097e 1267 name = hidpp_get_device_name(hidpp);
2f31c525
BT		 1268
1269 if (!name)
1270 hid_err(hdev, "unable to retrieve the name of the device");
1271 else
1272 snprintf(hdev->name, sizeof(hdev->name), "%s", name);
1273
1274 kfree(name);
1275}
1276
c39e3d5f
BT		 1277static int hidpp_input_open(struct input_dev *dev)
1278{
1279 struct hid_device *hid = input_get_drvdata(dev);
1280
1281 return hid_hw_open(hid);
1282}
1283
1284static void hidpp_input_close(struct input_dev *dev)
1285{
1286 struct hid_device *hid = input_get_drvdata(dev);
1287
1288 hid_hw_close(hid);
1289}
1290
1291static struct input_dev *hidpp_allocate_input(struct hid_device *hdev)
1292{
1293 struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev);
005b3f57 1294 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
c39e3d5f
BT		 1295
1296 if (!input_dev)
1297 return NULL;
1298
1299 input_set_drvdata(input_dev, hdev);
1300 input_dev->open = hidpp_input_open;
1301 input_dev->close = hidpp_input_close;
1302
005b3f57 1303 input_dev->name = hidpp->name;
c39e3d5f
BT		 1304 input_dev->phys = hdev->phys;
1305 input_dev->uniq = hdev->uniq;
1306 input_dev->id.bustype = hdev->bus;
1307 input_dev->id.vendor = hdev->vendor;
1308 input_dev->id.product = hdev->product;
1309 input_dev->id.version = hdev->version;
1310 input_dev->dev.parent = &hdev->dev;
1311
1312 return input_dev;
1313}
1314
1315static void hidpp_connect_event(struct hidpp_device *hidpp)
1316{
1317 struct hid_device *hdev = hidpp->hid_dev;
1318 int ret = 0;
1319 bool connected = atomic_read(&hidpp->connected);
1320 struct input_dev *input;
1321 char *name, *devm_name;
c39e3d5f 1322
bf159447
BT		 1323 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
1324 ret = wtp_connect(hdev, connected);
1325 if (ret)
1326 return;
8a09b4fa
GB		 1327 } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {
1328 ret = m560_send_config_command(hdev, connected);
1329 if (ret)
1330 return;
bf159447 1331 }
586bdc4e 1332
c39e3d5f
BT		 1333 if (!connected || hidpp->delayed_input)
1334 return;
1335
1336 if (!hidpp->protocol_major) {
1337 ret = !hidpp_is_connected(hidpp);
1338 if (ret) {
1339 hid_err(hdev, "Can not get the protocol version.\n");
1340 return;
1341 }
1342 }
1343
1344 /* the device is already connected, we can ask for its name and
1345 * protocol */
1346 hid_info(hdev, "HID++ %u.%u device connected.\n",
1347 hidpp->protocol_major, hidpp->protocol_minor);
1348
005b3f57
BT		 1349 if (!hidpp->name || hidpp->name == hdev->name) {
1350 name = hidpp_get_device_name(hidpp);
1351 if (!name) {
1352 hid_err(hdev,
1353 "unable to retrieve the name of the device");
1354 return;
1355 }
1356
1357 devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name);
1358 kfree(name);
1359 if (!devm_name)
1360 return;
1361
1362 hidpp->name = devm_name;
1363 }
1364
c39e3d5f
BT		 1365 input = hidpp_allocate_input(hdev);
1366 if (!input) {
1367 hid_err(hdev, "cannot allocate new input device: %d\n", ret);
1368 return;
1369 }
1370
c39e3d5f
BT		 1371 hidpp_populate_input(hidpp, input, false);
1372
1373 ret = input_register_device(input);
1374 if (ret)
1375 input_free_device(input);
1376
1377 hidpp->delayed_input = input;
1378}
1379
2f31c525
BT		 1380static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
1381{
1382 struct hidpp_device *hidpp;
1383 int ret;
1384 bool connected;
c39e3d5f 1385 unsigned int connect_mask = HID_CONNECT_DEFAULT;
2f31c525
BT		 1386
1387 hidpp = devm_kzalloc(&hdev->dev, sizeof(struct hidpp_device),
1388 GFP_KERNEL);
1389 if (!hidpp)
1390 return -ENOMEM;
1391
1392 hidpp->hid_dev = hdev;
005b3f57 1393 hidpp->name = hdev->name;
2f31c525
BT		 1394 hid_set_drvdata(hdev, hidpp);
1395
1396 hidpp->quirks = id->driver_data;
1397
9188dbae
BT		 1398 if (disable_raw_mode) {
1399 hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP;
1400 hidpp->quirks &= ~HIDPP_QUIRK_DELAYED_INIT;
1401 }
1402
2f31c525
BT		 1403 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
1404 ret = wtp_allocate(hdev, id);
1405 if (ret)
8a09b4fa
GB		 1406 goto allocate_fail;
1407 } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {
1408 ret = m560_allocate(hdev);
1409 if (ret)
1410 goto allocate_fail;
2f31c525
BT		 1411 }
1412
c39e3d5f 1413 INIT_WORK(&hidpp->work, delayed_work_cb);
2f31c525
BT		 1414 mutex_init(&hidpp->send_mutex);
1415 init_waitqueue_head(&hidpp->wait);
1416
1417 ret = hid_parse(hdev);
1418 if (ret) {
1419 hid_err(hdev, "%s:parse failed\n", __func__);
1420 goto hid_parse_fail;
1421 }
1422
1423 /* Allow incoming packets */
1424 hid_device_io_start(hdev);
1425
1426 connected = hidpp_is_connected(hidpp);
ab94e562
BT		 1427 if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) {
1428 if (!connected) {
b832da56 1429 ret = -ENODEV;
ab94e562 1430 hid_err(hdev, "Device not connected");
f486d9db 1431 hid_device_io_stop(hdev);
ab94e562
BT		 1432 goto hid_parse_fail;
1433 }
2f31c525 1434
ab94e562
BT		 1435 hid_info(hdev, "HID++ %u.%u device connected.\n",
1436 hidpp->protocol_major, hidpp->protocol_minor);
ab94e562 1437 }
2f31c525 1438
33797820 1439 hidpp_overwrite_name(hdev, id->group == HID_GROUP_LOGITECH_DJ_DEVICE);
c39e3d5f 1440 atomic_set(&hidpp->connected, connected);
33797820 1441
c39e3d5f 1442 if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) {
2f31c525
BT		 1443 ret = wtp_get_config(hidpp);
1444 if (ret)
1445 goto hid_parse_fail;
1446 }
1447
1448 /* Block incoming packets */
1449 hid_device_io_stop(hdev);
1450
c39e3d5f
BT		 1451 if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT)
1452 connect_mask &= ~HID_CONNECT_HIDINPUT;
1453
1454 ret = hid_hw_start(hdev, connect_mask);
2f31c525
BT		 1455 if (ret) {
1456 hid_err(hdev, "%s:hid_hw_start returned error\n", __func__);
1457 goto hid_hw_start_fail;
1458 }
1459
c39e3d5f
BT		 1460 if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) {
1461 /* Allow incoming packets */
1462 hid_device_io_start(hdev);
1463
1464 hidpp_connect_event(hidpp);
1465 }
1466
2f31c525
BT		 1467 return ret;
1468
1469hid_hw_start_fail:
1470hid_parse_fail:
c39e3d5f 1471 cancel_work_sync(&hidpp->work);
2f31c525 1472 mutex_destroy(&hidpp->send_mutex);
8a09b4fa 1473allocate_fail:
2f31c525
BT		 1474 hid_set_drvdata(hdev, NULL);
1475 return ret;
1476}
1477
1478static void hidpp_remove(struct hid_device *hdev)
1479{
1480 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1481
c39e3d5f 1482 cancel_work_sync(&hidpp->work);
2f31c525
BT		 1483 mutex_destroy(&hidpp->send_mutex);
1484 hid_hw_stop(hdev);
1485}
1486
1487static const struct hid_device_id hidpp_devices[] = {
57ac86cf
BT		 1488 { /* wireless touchpad */
1489 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1490 USB_VENDOR_ID_LOGITECH, 0x4011),
1491 .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT |
1492 HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS },
586bdc4e
BT		 1493 { /* wireless touchpad T650 */
1494 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1495 USB_VENDOR_ID_LOGITECH, 0x4101),
1496 .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT },
2f31c525
BT		 1497 { /* wireless touchpad T651 */
1498 HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
1499 USB_DEVICE_ID_LOGITECH_T651),
1500 .driver_data = HIDPP_QUIRK_CLASS_WTP },
8a09b4fa 1501 { /* Mouse logitech M560 */
3a61e975 1502 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
8a09b4fa
GB		 1503 USB_VENDOR_ID_LOGITECH, 0x402d),
1504 .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },
ab94e562
BT		 1505
1506 { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1507 USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
2f31c525
BT		 1508 {}
1509};
1510
1511MODULE_DEVICE_TABLE(hid, hidpp_devices);
1512
1513static struct hid_driver hidpp_driver = {
1514 .name = "logitech-hidpp-device",
1515 .id_table = hidpp_devices,
1516 .probe = hidpp_probe,
1517 .remove = hidpp_remove,
1518 .raw_event = hidpp_raw_event,
1519 .input_configured = hidpp_input_configured,
1520 .input_mapping = hidpp_input_mapping,
1521};
1522
1523module_hid_driver(hidpp_driver);
Linux 6.x block layer and io_uring tree(s)