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HID: logitech-hidpp: forward device info in power_supply
[mirror_ubuntu-bionic-kernel.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>
ff21a635
EV		 18#include <linux/input.h>
19#include <linux/usb.h>
2f31c525
BT		 20#include <linux/hid.h>
21#include <linux/module.h>
22#include <linux/slab.h>
23#include <linux/sched.h>
24#include <linux/kfifo.h>
25#include <linux/input/mt.h>
ff21a635
EV		 26#include <linux/workqueue.h>
27#include <linux/atomic.h>
28#include <linux/fixp-arith.h>
2f31c525 29#include <asm/unaligned.h>
ff21a635 30#include "usbhid/usbhid.h"
2f31c525
BT		 31#include "hid-ids.h"
32
33MODULE_LICENSE("GPL");
34MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
35MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>");
36
9188dbae
BT		 37static bool disable_raw_mode;
38module_param(disable_raw_mode, bool, 0644);
39MODULE_PARM_DESC(disable_raw_mode,
40 "Disable Raw mode reporting for touchpads and keep firmware gestures.");
41
90cdd986
BT		 42static bool disable_tap_to_click;
43module_param(disable_tap_to_click, bool, 0644);
44MODULE_PARM_DESC(disable_tap_to_click,
45 "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently).");
46
2f31c525
BT		 47#define REPORT_ID_HIDPP_SHORT 0x10
48#define REPORT_ID_HIDPP_LONG 0x11
a5ce8f5b 49#define REPORT_ID_HIDPP_VERY_LONG 0x12
2f31c525
BT		 50
51#define HIDPP_REPORT_SHORT_LENGTH 7
52#define HIDPP_REPORT_LONG_LENGTH 20
a5ce8f5b 53#define HIDPP_REPORT_VERY_LONG_LENGTH 64
2f31c525
BT		 54
55#define HIDPP_QUIRK_CLASS_WTP BIT(0)
8a09b4fa 56#define HIDPP_QUIRK_CLASS_M560 BIT(1)
90cdd986 57#define HIDPP_QUIRK_CLASS_K400 BIT(2)
7bfd2927 58#define HIDPP_QUIRK_CLASS_G920 BIT(3)
2f31c525 59
8a09b4fa 60/* bits 2..20 are reserved for classes */
6bd4e65d 61/* #define HIDPP_QUIRK_CONNECT_EVENTS BIT(21) disabled */
57ac86cf 62#define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22)
580a7e82 63#define HIDPP_QUIRK_NO_HIDINPUT BIT(23)
7bfd2927 64#define HIDPP_QUIRK_FORCE_OUTPUT_REPORTS BIT(24)
843c624e 65#define HIDPP_QUIRK_UNIFYING BIT(25)
580a7e82 66
6bd4e65d 67#define HIDPP_QUIRK_DELAYED_INIT HIDPP_QUIRK_NO_HIDINPUT
c39e3d5f 68
206d7c68
BT		 69#define HIDPP_CAPABILITY_HIDPP10_BATTERY BIT(0)
70#define HIDPP_CAPABILITY_HIDPP20_BATTERY BIT(1)
71
2f31c525
BT		 72/*
73 * There are two hidpp protocols in use, the first version hidpp10 is known
74 * as register access protocol or RAP, the second version hidpp20 is known as
75 * feature access protocol or FAP
76 *
77 * Most older devices (including the Unifying usb receiver) use the RAP protocol
78 * where as most newer devices use the FAP protocol. Both protocols are
79 * compatible with the underlying transport, which could be usb, Unifiying, or
80 * bluetooth. The message lengths are defined by the hid vendor specific report
81 * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and
82 * the HIDPP_LONG report type (total message length 20 bytes)
83 *
84 * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG
85 * messages. The Unifying receiver itself responds to RAP messages (device index
86 * is 0xFF for the receiver), and all messages (short or long) with a device
87 * index between 1 and 6 are passed untouched to the corresponding paired
88 * Unifying device.
89 *
90 * The paired device can be RAP or FAP, it will receive the message untouched
91 * from the Unifiying receiver.
92 */
93
94struct fap {
95 u8 feature_index;
96 u8 funcindex_clientid;
a5ce8f5b 97 u8 params[HIDPP_REPORT_VERY_LONG_LENGTH - 4U];
2f31c525
BT		 98};
99
100struct rap {
101 u8 sub_id;
102 u8 reg_address;
a5ce8f5b 103 u8 params[HIDPP_REPORT_VERY_LONG_LENGTH - 4U];
2f31c525
BT		 104};
105
106struct hidpp_report {
107 u8 report_id;
108 u8 device_index;
109 union {
110 struct fap fap;
111 struct rap rap;
112 u8 rawbytes[sizeof(struct fap)];
113 };
114} __packed;
115
5a2b190c
PH		 116struct hidpp_battery {
117 u8 feature_index;
118 struct power_supply_desc desc;
119 struct power_supply *ps;
120 char name[64];
121 int status;
122 int level;
123};
124
2f31c525
BT		 125struct hidpp_device {
126 struct hid_device *hid_dev;
127 struct mutex send_mutex;
128 void *send_receive_buf;
005b3f57 129 char *name; /* will never be NULL and should not be freed */
2f31c525
BT		 130 wait_queue_head_t wait;
131 bool answer_available;
132 u8 protocol_major;
133 u8 protocol_minor;
134
135 void *private_data;
136
c39e3d5f
BT		 137 struct work_struct work;
138 struct kfifo delayed_work_fifo;
139 atomic_t connected;
140 struct input_dev *delayed_input;
141
2f31c525 142 unsigned long quirks;
206d7c68 143 unsigned long capabilities;
2f31c525 144
5a2b190c
PH		 145 struct hidpp_battery battery;
146};
2f31c525 147
f677bb15 148/* HID++ 1.0 error codes */
2f31c525
BT		 149#define HIDPP_ERROR 0x8f
150#define HIDPP_ERROR_SUCCESS 0x00
151#define HIDPP_ERROR_INVALID_SUBID 0x01
152#define HIDPP_ERROR_INVALID_ADRESS 0x02
153#define HIDPP_ERROR_INVALID_VALUE 0x03
154#define HIDPP_ERROR_CONNECT_FAIL 0x04
155#define HIDPP_ERROR_TOO_MANY_DEVICES 0x05
156#define HIDPP_ERROR_ALREADY_EXISTS 0x06
157#define HIDPP_ERROR_BUSY 0x07
158#define HIDPP_ERROR_UNKNOWN_DEVICE 0x08
159#define HIDPP_ERROR_RESOURCE_ERROR 0x09
160#define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a
161#define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b
162#define HIDPP_ERROR_WRONG_PIN_CODE 0x0c
f677bb15
PW		 163/* HID++ 2.0 error codes */
164#define HIDPP20_ERROR 0xff
2f31c525 165
c39e3d5f
BT		 166static void hidpp_connect_event(struct hidpp_device *hidpp_dev);
167
2f31c525
BT		 168static int __hidpp_send_report(struct hid_device *hdev,
169 struct hidpp_report *hidpp_report)
170{
7bfd2927 171 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2f31c525
BT		 172 int fields_count, ret;
173
7bfd2927
SW		 174 hidpp = hid_get_drvdata(hdev);
175
2f31c525
BT		 176 switch (hidpp_report->report_id) {
177 case REPORT_ID_HIDPP_SHORT:
178 fields_count = HIDPP_REPORT_SHORT_LENGTH;
179 break;
180 case REPORT_ID_HIDPP_LONG:
181 fields_count = HIDPP_REPORT_LONG_LENGTH;
182 break;
a5ce8f5b
SW		 183 case REPORT_ID_HIDPP_VERY_LONG:
184 fields_count = HIDPP_REPORT_VERY_LONG_LENGTH;
185 break;
2f31c525
BT		 186 default:
187 return -ENODEV;
188 }
189
190 /*
191 * set the device_index as the receiver, it will be overwritten by
192 * hid_hw_request if needed
193 */
194 hidpp_report->device_index = 0xff;
195
7bfd2927
SW		 196 if (hidpp->quirks & HIDPP_QUIRK_FORCE_OUTPUT_REPORTS) {
197 ret = hid_hw_output_report(hdev, (u8 *)hidpp_report, fields_count);
198 } else {
199 ret = hid_hw_raw_request(hdev, hidpp_report->report_id,
200 (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT,
201 HID_REQ_SET_REPORT);
202 }
2f31c525
BT		 203
204 return ret == fields_count ? 0 : -1;
205}
206
8c9952b2
BT		 207/**
208 * hidpp_send_message_sync() returns 0 in case of success, and something else
209 * in case of a failure.
210 * - If ' something else' is positive, that means that an error has been raised
211 * by the protocol itself.
212 * - If ' something else' is negative, that means that we had a classic error
213 * (-ENOMEM, -EPIPE, etc...)
214 */
2f31c525
BT		 215static int hidpp_send_message_sync(struct hidpp_device *hidpp,
216 struct hidpp_report *message,
217 struct hidpp_report *response)
218{
219 int ret;
220
221 mutex_lock(&hidpp->send_mutex);
222
223 hidpp->send_receive_buf = response;
224 hidpp->answer_available = false;
225
226 /*
227 * So that we can later validate the answer when it arrives
228 * in hidpp_raw_event
229 */
230 *response = *message;
231
232 ret = __hidpp_send_report(hidpp->hid_dev, message);
233
234 if (ret) {
235 dbg_hid("__hidpp_send_report returned err: %d\n", ret);
236 memset(response, 0, sizeof(struct hidpp_report));
237 goto exit;
238 }
239
240 if (!wait_event_timeout(hidpp->wait, hidpp->answer_available,
241 5*HZ)) {
242 dbg_hid("%s:timeout waiting for response\n", __func__);
243 memset(response, 0, sizeof(struct hidpp_report));
244 ret = -ETIMEDOUT;
245 }
246
247 if (response->report_id == REPORT_ID_HIDPP_SHORT &&
f677bb15
PW		 248 response->rap.sub_id == HIDPP_ERROR) {
249 ret = response->rap.params[1];
250 dbg_hid("%s:got hidpp error %02X\n", __func__, ret);
251 goto exit;
252 }
253
a5ce8f5b
SW		 254 if ((response->report_id == REPORT_ID_HIDPP_LONG ||
255 response->report_id == REPORT_ID_HIDPP_VERY_LONG) &&
256 response->fap.feature_index == HIDPP20_ERROR) {
2f31c525 257 ret = response->fap.params[1];
f677bb15 258 dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret);
2f31c525
BT		 259 goto exit;
260 }
261
262exit:
263 mutex_unlock(&hidpp->send_mutex);
264 return ret;
265
266}
267
268static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp,
269 u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count,
270 struct hidpp_report *response)
271{
3e7830ce 272 struct hidpp_report *message;
2f31c525
BT		 273 int ret;
274
275 if (param_count > sizeof(message->fap.params))
276 return -EINVAL;
277
3e7830ce
DC		 278 message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
279 if (!message)
280 return -ENOMEM;
a5ce8f5b
SW		 281
282 if (param_count > (HIDPP_REPORT_LONG_LENGTH - 4))
283 message->report_id = REPORT_ID_HIDPP_VERY_LONG;
284 else
285 message->report_id = REPORT_ID_HIDPP_LONG;
2f31c525
BT		 286 message->fap.feature_index = feat_index;
287 message->fap.funcindex_clientid = funcindex_clientid;
288 memcpy(&message->fap.params, params, param_count);
289
290 ret = hidpp_send_message_sync(hidpp, message, response);
291 kfree(message);
292 return ret;
293}
294
33797820
BT		 295static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
296 u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count,
297 struct hidpp_report *response)
298{
3e7830ce 299 struct hidpp_report *message;
a5ce8f5b 300 int ret, max_count;
33797820 301
a5ce8f5b
SW		 302 switch (report_id) {
303 case REPORT_ID_HIDPP_SHORT:
304 max_count = HIDPP_REPORT_SHORT_LENGTH - 4;
305 break;
306 case REPORT_ID_HIDPP_LONG:
307 max_count = HIDPP_REPORT_LONG_LENGTH - 4;
308 break;
309 case REPORT_ID_HIDPP_VERY_LONG:
310 max_count = HIDPP_REPORT_VERY_LONG_LENGTH - 4;
311 break;
312 default:
33797820 313 return -EINVAL;
a5ce8f5b 314 }
33797820 315
a5ce8f5b 316 if (param_count > max_count)
33797820
BT		 317 return -EINVAL;
318
3e7830ce
DC		 319 message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
320 if (!message)
321 return -ENOMEM;
33797820
BT		 322 message->report_id = report_id;
323 message->rap.sub_id = sub_id;
324 message->rap.reg_address = reg_address;
325 memcpy(&message->rap.params, params, param_count);
326
327 ret = hidpp_send_message_sync(hidpp_dev, message, response);
328 kfree(message);
329 return ret;
330}
331
c39e3d5f
BT		 332static void delayed_work_cb(struct work_struct *work)
333{
334 struct hidpp_device *hidpp = container_of(work, struct hidpp_device,
335 work);
336 hidpp_connect_event(hidpp);
337}
338
2f31c525
BT		 339static inline bool hidpp_match_answer(struct hidpp_report *question,
340 struct hidpp_report *answer)
341{
342 return (answer->fap.feature_index == question->fap.feature_index) &&
343 (answer->fap.funcindex_clientid == question->fap.funcindex_clientid);
344}
345
346static inline bool hidpp_match_error(struct hidpp_report *question,
347 struct hidpp_report *answer)
348{
f677bb15
PW		 349 return ((answer->rap.sub_id == HIDPP_ERROR) ||
350 (answer->fap.feature_index == HIDPP20_ERROR)) &&
2f31c525
BT		 351 (answer->fap.funcindex_clientid == question->fap.feature_index) &&
352 (answer->fap.params[0] == question->fap.funcindex_clientid);
353}
354
c39e3d5f
BT		 355static inline bool hidpp_report_is_connect_event(struct hidpp_report *report)
356{
357 return (report->report_id == REPORT_ID_HIDPP_SHORT) &&
358 (report->rap.sub_id == 0x41);
359}
360
a0e625f8
BT		 361/**
362 * hidpp_prefix_name() prefixes the current given name with "Logitech ".
363 */
364static void hidpp_prefix_name(char **name, int name_length)
365{
366#define PREFIX_LENGTH 9 /* "Logitech " */
367
368 int new_length;
369 char *new_name;
370
371 if (name_length > PREFIX_LENGTH &&
372 strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0)
373 /* The prefix has is already in the name */
374 return;
375
376 new_length = PREFIX_LENGTH + name_length;
377 new_name = kzalloc(new_length, GFP_KERNEL);
378 if (!new_name)
379 return;
380
381 snprintf(new_name, new_length, "Logitech %s", *name);
382
383 kfree(*name);
384
385 *name = new_name;
386}
387
33797820
BT		 388/* -------------------------------------------------------------------------- */
389/* HIDP++ 1.0 commands */
390/* -------------------------------------------------------------------------- */
391
392#define HIDPP_SET_REGISTER 0x80
393#define HIDPP_GET_REGISTER 0x81
394#define HIDPP_SET_LONG_REGISTER 0x82
395#define HIDPP_GET_LONG_REGISTER 0x83
396
397#define HIDPP_REG_PAIRING_INFORMATION 0xB5
843c624e
BT		 398#define HIDPP_EXTENDED_PAIRING 0x30
399#define HIDPP_DEVICE_NAME 0x40
33797820 400
843c624e 401static char *hidpp_unifying_get_name(struct hidpp_device *hidpp_dev)
33797820
BT		 402{
403 struct hidpp_report response;
404 int ret;
843c624e 405 u8 params[1] = { HIDPP_DEVICE_NAME };
33797820
BT		 406 char *name;
407 int len;
408
409 ret = hidpp_send_rap_command_sync(hidpp_dev,
410 REPORT_ID_HIDPP_SHORT,
411 HIDPP_GET_LONG_REGISTER,
412 HIDPP_REG_PAIRING_INFORMATION,
413 params, 1, &response);
414 if (ret)
415 return NULL;
416
417 len = response.rap.params[1];
418
3a034a7a
PW		 419 if (2 + len > sizeof(response.rap.params))
420 return NULL;
421
33797820
BT		 422 name = kzalloc(len + 1, GFP_KERNEL);
423 if (!name)
424 return NULL;
425
426 memcpy(name, &response.rap.params[2], len);
a0e625f8
BT		 427
428 /* include the terminating '\0' */
429 hidpp_prefix_name(&name, len + 1);
430
33797820
BT		 431 return name;
432}
433
843c624e
BT		 434static int hidpp_unifying_get_serial(struct hidpp_device *hidpp, u32 *serial)
435{
436 struct hidpp_report response;
437 int ret;
438 u8 params[1] = { HIDPP_EXTENDED_PAIRING };
439
440 ret = hidpp_send_rap_command_sync(hidpp,
441 REPORT_ID_HIDPP_SHORT,
442 HIDPP_GET_LONG_REGISTER,
443 HIDPP_REG_PAIRING_INFORMATION,
444 params, 1, &response);
445 if (ret)
446 return ret;
447
448 /*
449 * We don't care about LE or BE, we will output it as a string
450 * with %4phD, so we need to keep the order.
451 */
452 *serial = *((u32 *)&response.rap.params[1]);
453 return 0;
454}
455
456static int hidpp_unifying_init(struct hidpp_device *hidpp)
457{
458 struct hid_device *hdev = hidpp->hid_dev;
459 const char *name;
460 u32 serial;
461 int ret;
462
463 ret = hidpp_unifying_get_serial(hidpp, &serial);
464 if (ret)
465 return ret;
466
467 snprintf(hdev->uniq, sizeof(hdev->uniq), "%04x-%4phD",
468 hdev->product, &serial);
469 dbg_hid("HID++ Unifying: Got serial: %s\n", hdev->uniq);
470
471 name = hidpp_unifying_get_name(hidpp);
472 if (!name)
473 return -EIO;
474
475 snprintf(hdev->name, sizeof(hdev->name), "%s", name);
476 dbg_hid("HID++ Unifying: Got name: %s\n", name);
477
478 kfree(name);
479 return 0;
480}
481
2f31c525
BT		 482/* -------------------------------------------------------------------------- */
483/* 0x0000: Root */
484/* -------------------------------------------------------------------------- */
485
486#define HIDPP_PAGE_ROOT 0x0000
487#define HIDPP_PAGE_ROOT_IDX 0x00
488
489#define CMD_ROOT_GET_FEATURE 0x01
490#define CMD_ROOT_GET_PROTOCOL_VERSION 0x11
491
492static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature,
493 u8 *feature_index, u8 *feature_type)
494{
495 struct hidpp_report response;
496 int ret;
497 u8 params[2] = { feature >> 8, feature & 0x00FF };
498
499 ret = hidpp_send_fap_command_sync(hidpp,
500 HIDPP_PAGE_ROOT_IDX,
501 CMD_ROOT_GET_FEATURE,
502 params, 2, &response);
503 if (ret)
504 return ret;
505
506 *feature_index = response.fap.params[0];
507 *feature_type = response.fap.params[1];
508
509 return ret;
510}
511
512static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp)
513{
514 struct hidpp_report response;
515 int ret;
516
517 ret = hidpp_send_fap_command_sync(hidpp,
518 HIDPP_PAGE_ROOT_IDX,
519 CMD_ROOT_GET_PROTOCOL_VERSION,
520 NULL, 0, &response);
521
552f12eb 522 if (ret == HIDPP_ERROR_INVALID_SUBID) {
2f31c525
BT		 523 hidpp->protocol_major = 1;
524 hidpp->protocol_minor = 0;
525 return 0;
526 }
527
552f12eb
BT		 528 /* the device might not be connected */
529 if (ret == HIDPP_ERROR_RESOURCE_ERROR)
530 return -EIO;
531
8c9952b2
BT		 532 if (ret > 0) {
533 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
534 __func__, ret);
535 return -EPROTO;
536 }
2f31c525 537 if (ret)
8c9952b2 538 return ret;
2f31c525
BT		 539
540 hidpp->protocol_major = response.fap.params[0];
541 hidpp->protocol_minor = response.fap.params[1];
542
543 return ret;
544}
545
546static bool hidpp_is_connected(struct hidpp_device *hidpp)
547{
548 int ret;
549
550 ret = hidpp_root_get_protocol_version(hidpp);
551 if (!ret)
552 hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n",
553 hidpp->protocol_major, hidpp->protocol_minor);
554 return ret == 0;
555}
556
557/* -------------------------------------------------------------------------- */
558/* 0x0005: GetDeviceNameType */
559/* -------------------------------------------------------------------------- */
560
561#define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005
562
563#define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x01
564#define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x11
565#define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x21
566
567static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp,
568 u8 feature_index, u8 *nameLength)
569{
570 struct hidpp_report response;
571 int ret;
572
573 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
574 CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response);
575
8c9952b2
BT		 576 if (ret > 0) {
577 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
578 __func__, ret);
579 return -EPROTO;
580 }
2f31c525 581 if (ret)
8c9952b2 582 return ret;
2f31c525
BT		 583
584 *nameLength = response.fap.params[0];
585
586 return ret;
587}
588
589static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp,
590 u8 feature_index, u8 char_index, char *device_name, int len_buf)
591{
592 struct hidpp_report response;
593 int ret, i;
594 int count;
595
596 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
597 CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1,
598 &response);
599
8c9952b2
BT		 600 if (ret > 0) {
601 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
602 __func__, ret);
603 return -EPROTO;
604 }
2f31c525 605 if (ret)
8c9952b2 606 return ret;
2f31c525 607
a5ce8f5b
SW		 608 switch (response.report_id) {
609 case REPORT_ID_HIDPP_VERY_LONG:
610 count = HIDPP_REPORT_VERY_LONG_LENGTH - 4;
611 break;
612 case REPORT_ID_HIDPP_LONG:
2f31c525 613 count = HIDPP_REPORT_LONG_LENGTH - 4;
a5ce8f5b
SW		 614 break;
615 case REPORT_ID_HIDPP_SHORT:
2f31c525 616 count = HIDPP_REPORT_SHORT_LENGTH - 4;
a5ce8f5b
SW		 617 break;
618 default:
619 return -EPROTO;
620 }
2f31c525
BT		 621
622 if (len_buf < count)
623 count = len_buf;
624
625 for (i = 0; i < count; i++)
626 device_name[i] = response.fap.params[i];
627
628 return count;
629}
630
02cc097e 631static char *hidpp_get_device_name(struct hidpp_device *hidpp)
2f31c525
BT		 632{
633 u8 feature_type;
634 u8 feature_index;
635 u8 __name_length;
636 char *name;
637 unsigned index = 0;
638 int ret;
639
640 ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE,
641 &feature_index, &feature_type);
642 if (ret)
02cc097e 643 return NULL;
2f31c525
BT		 644
645 ret = hidpp_devicenametype_get_count(hidpp, feature_index,
646 &__name_length);
647 if (ret)
02cc097e 648 return NULL;
2f31c525
BT		 649
650 name = kzalloc(__name_length + 1, GFP_KERNEL);
651 if (!name)
02cc097e 652 return NULL;
2f31c525 653
1430ee73
PW		 654 while (index < __name_length) {
655 ret = hidpp_devicenametype_get_device_name(hidpp,
2f31c525
BT		 656 feature_index, index, name + index,
657 __name_length - index);
1430ee73
PW		 658 if (ret <= 0) {
659 kfree(name);
660 return NULL;
661 }
662 index += ret;
663 }
2f31c525 664
a0e625f8
BT		 665 /* include the terminating '\0' */
666 hidpp_prefix_name(&name, __name_length + 1);
667
2f31c525 668 return name;
2f31c525
BT		 669}
670
5a2b190c
PH		 671/* -------------------------------------------------------------------------- */
672/* 0x1000: Battery level status */
673/* -------------------------------------------------------------------------- */
674
675#define HIDPP_PAGE_BATTERY_LEVEL_STATUS 0x1000
676
677#define CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS 0x00
678#define CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_CAPABILITY 0x10
679
680#define EVENT_BATTERY_LEVEL_STATUS_BROADCAST 0x00
681
682static int hidpp20_batterylevel_map_status_level(u8 data[3], int *level,
683 int *next_level)
684{
685 int status;
686 int level_override;
687
688 *level = data[0];
689 *next_level = data[1];
690
691 /* When discharging, we can rely on the device reported level.
692 * For all other states the device reports level 0 (unknown). Make up
693 * a number instead
694 */
695 switch (data[2]) {
696 case 0: /* discharging (in use) */
697 status = POWER_SUPPLY_STATUS_DISCHARGING;
698 level_override = 0;
699 break;
700 case 1: /* recharging */
701 status = POWER_SUPPLY_STATUS_CHARGING;
702 level_override = 80;
703 break;
704 case 2: /* charge in final stage */
705 status = POWER_SUPPLY_STATUS_CHARGING;
706 level_override = 90;
707 break;
708 case 3: /* charge complete */
709 status = POWER_SUPPLY_STATUS_FULL;
710 level_override = 100;
711 break;
712 case 4: /* recharging below optimal speed */
713 status = POWER_SUPPLY_STATUS_CHARGING;
714 level_override = 50;
715 break;
716 /* 5 = invalid battery type
717 6 = thermal error
718 7 = other charging error */
719 default:
720 status = POWER_SUPPLY_STATUS_NOT_CHARGING;
721 level_override = 0;
722 break;
723 }
724
725 if (level_override != 0 && *level == 0)
726 *level = level_override;
727
728 return status;
729}
730
731static int hidpp20_batterylevel_get_battery_level(struct hidpp_device *hidpp,
732 u8 feature_index,
733 int *status,
734 int *level,
735 int *next_level)
736{
737 struct hidpp_report response;
738 int ret;
739 u8 *params = (u8 *)response.fap.params;
740
741 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
742 CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS,
743 NULL, 0, &response);
744 if (ret > 0) {
745 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
746 __func__, ret);
747 return -EPROTO;
748 }
749 if (ret)
750 return ret;
751
752 *status = hidpp20_batterylevel_map_status_level(params, level,
753 next_level);
754
755 return 0;
756}
757
758static int hidpp20_query_battery_info(struct hidpp_device *hidpp)
759{
760 u8 feature_type;
761 int ret;
762 int status, level, next_level;
763
764 if (hidpp->battery.feature_index == 0) {
765 ret = hidpp_root_get_feature(hidpp,
766 HIDPP_PAGE_BATTERY_LEVEL_STATUS,
767 &hidpp->battery.feature_index,
768 &feature_type);
769 if (ret)
770 return ret;
771 }
772
773 ret = hidpp20_batterylevel_get_battery_level(hidpp,
774 hidpp->battery.feature_index,
775 &status, &level, &next_level);
776 if (ret)
777 return ret;
778
779 hidpp->battery.status = status;
780 hidpp->battery.level = level;
781
782 return 0;
783}
784
785static int hidpp20_battery_event(struct hidpp_device *hidpp,
786 u8 *data, int size)
787{
788 struct hidpp_report *report = (struct hidpp_report *)data;
789 int status, level, next_level;
790 bool changed;
791
792 if (report->fap.feature_index != hidpp->battery.feature_index ||
793 report->fap.funcindex_clientid != EVENT_BATTERY_LEVEL_STATUS_BROADCAST)
794 return 0;
795
796 status = hidpp20_batterylevel_map_status_level(report->fap.params,
797 &level, &next_level);
798
799 changed = level != hidpp->battery.level ||
800 status != hidpp->battery.status;
801
802 if (changed) {
803 hidpp->battery.level = level;
804 hidpp->battery.status = status;
805 if (hidpp->battery.ps)
806 power_supply_changed(hidpp->battery.ps);
807 }
808
809 return 0;
810}
811
812static enum power_supply_property hidpp_battery_props[] = {
813 POWER_SUPPLY_PROP_STATUS,
814 POWER_SUPPLY_PROP_CAPACITY,
3861e6ca 815 POWER_SUPPLY_PROP_SCOPE,
32043d0f
BT		 816 POWER_SUPPLY_PROP_MODEL_NAME,
817 POWER_SUPPLY_PROP_MANUFACTURER,
818 POWER_SUPPLY_PROP_SERIAL_NUMBER,
5a2b190c
PH		 819};
820
821static int hidpp_battery_get_property(struct power_supply *psy,
822 enum power_supply_property psp,
823 union power_supply_propval *val)
824{
825 struct hidpp_device *hidpp = power_supply_get_drvdata(psy);
826 int ret = 0;
827
828 switch(psp) {
829 case POWER_SUPPLY_PROP_STATUS:
830 val->intval = hidpp->battery.status;
831 break;
832 case POWER_SUPPLY_PROP_CAPACITY:
833 val->intval = hidpp->battery.level;
834 break;
3861e6ca
BN		 835 case POWER_SUPPLY_PROP_SCOPE:
836 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
837 break;
32043d0f
BT		 838 case POWER_SUPPLY_PROP_MODEL_NAME:
839 if (!strncmp(hidpp->name, "Logitech ", 9))
840 val->strval = hidpp->name + 9;
841 else
842 val->strval = hidpp->name;
843 break;
844 case POWER_SUPPLY_PROP_MANUFACTURER:
845 val->strval = "Logitech";
846 break;
847 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
848 val->strval = hidpp->hid_dev->uniq;
849 break;
5a2b190c
PH		 850 default:
851 ret = -EINVAL;
852 break;
853 }
854
855 return ret;
856}
857
858static int hidpp20_initialize_battery(struct hidpp_device *hidpp)
859{
860 static atomic_t battery_no = ATOMIC_INIT(0);
861 struct power_supply_config cfg = { .drv_data = hidpp };
862 struct power_supply_desc *desc = &hidpp->battery.desc;
863 struct hidpp_battery *battery;
864 unsigned long n;
865 int ret;
866
867 ret = hidpp20_query_battery_info(hidpp);
868 if (ret)
869 return ret;
870
871 battery = &hidpp->battery;
872
873 n = atomic_inc_return(&battery_no) - 1;
874 desc->properties = hidpp_battery_props;
875 desc->num_properties = ARRAY_SIZE(hidpp_battery_props);
876 desc->get_property = hidpp_battery_get_property;
877 sprintf(battery->name, "hidpp_battery_%ld", n);
878 desc->name = battery->name;
879 desc->type = POWER_SUPPLY_TYPE_BATTERY;
880 desc->use_for_apm = 0;
881
882 battery->ps = devm_power_supply_register(&hidpp->hid_dev->dev,
883 &battery->desc,
884 &cfg);
885 if (IS_ERR(battery->ps))
886 return PTR_ERR(battery->ps);
887
888 power_supply_powers(battery->ps, &hidpp->hid_dev->dev);
889
890 return 0;
891}
892
893static int hidpp_initialize_battery(struct hidpp_device *hidpp)
894{
895 int ret;
896
680de741
BT		 897 if (hidpp->battery.ps)
898 return 0;
899
5a2b190c
PH		 900 if (hidpp->protocol_major >= 2) {
901 ret = hidpp20_initialize_battery(hidpp);
902 if (ret == 0)
206d7c68 903 hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP20_BATTERY;
5a2b190c
PH		 904 }
905
906 return ret;
907}
908
90cdd986
BT		 909/* -------------------------------------------------------------------------- */
910/* 0x6010: Touchpad FW items */
911/* -------------------------------------------------------------------------- */
912
913#define HIDPP_PAGE_TOUCHPAD_FW_ITEMS 0x6010
914
915#define CMD_TOUCHPAD_FW_ITEMS_SET 0x10
916
917struct hidpp_touchpad_fw_items {
918 uint8_t presence;
919 uint8_t desired_state;
920 uint8_t state;
921 uint8_t persistent;
922};
923
924/**
925 * send a set state command to the device by reading the current items->state
926 * field. items is then filled with the current state.
927 */
928static int hidpp_touchpad_fw_items_set(struct hidpp_device *hidpp,
929 u8 feature_index,
930 struct hidpp_touchpad_fw_items *items)
931{
932 struct hidpp_report response;
933 int ret;
934 u8 *params = (u8 *)response.fap.params;
935
936 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
937 CMD_TOUCHPAD_FW_ITEMS_SET, &items->state, 1, &response);
938
939 if (ret > 0) {
940 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
941 __func__, ret);
942 return -EPROTO;
943 }
944 if (ret)
945 return ret;
946
947 items->presence = params[0];
948 items->desired_state = params[1];
949 items->state = params[2];
950 items->persistent = params[3];
951
952 return 0;
953}
954
2f31c525
BT		 955/* -------------------------------------------------------------------------- */
956/* 0x6100: TouchPadRawXY */
957/* -------------------------------------------------------------------------- */
958
959#define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100
960
961#define CMD_TOUCHPAD_GET_RAW_INFO 0x01
586bdc4e
BT		 962#define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21
963
964#define EVENT_TOUCHPAD_RAW_XY 0x00
2f31c525
BT		 965
966#define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01
967#define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03
968
969struct hidpp_touchpad_raw_info {
970 u16 x_size;
971 u16 y_size;
972 u8 z_range;
973 u8 area_range;
974 u8 timestamp_unit;
975 u8 maxcontacts;
976 u8 origin;
977 u16 res;
978};
979
980struct hidpp_touchpad_raw_xy_finger {
981 u8 contact_type;
982 u8 contact_status;
983 u16 x;
984 u16 y;
985 u8 z;
986 u8 area;
987 u8 finger_id;
988};
989
990struct hidpp_touchpad_raw_xy {
991 u16 timestamp;
992 struct hidpp_touchpad_raw_xy_finger fingers[2];
993 u8 spurious_flag;
994 u8 end_of_frame;
995 u8 finger_count;
996 u8 button;
997};
998
999static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp,
1000 u8 feature_index, struct hidpp_touchpad_raw_info *raw_info)
1001{
1002 struct hidpp_report response;
1003 int ret;
1004 u8 *params = (u8 *)response.fap.params;
1005
1006 ret = hidpp_send_fap_command_sync(hidpp, feature_index,
1007 CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response);
1008
8c9952b2
BT		 1009 if (ret > 0) {
1010 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
1011 __func__, ret);
1012 return -EPROTO;
1013 }
2f31c525 1014 if (ret)
8c9952b2 1015 return ret;
2f31c525
BT		 1016
1017 raw_info->x_size = get_unaligned_be16(&params[0]);
1018 raw_info->y_size = get_unaligned_be16(&params[2]);
1019 raw_info->z_range = params[4];
1020 raw_info->area_range = params[5];
1021 raw_info->maxcontacts = params[7];
1022 raw_info->origin = params[8];
1023 /* res is given in unit per inch */
1024 raw_info->res = get_unaligned_be16(&params[13]) * 2 / 51;
1025
1026 return ret;
1027}
1028
586bdc4e
BT		 1029static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev,
1030 u8 feature_index, bool send_raw_reports,
1031 bool sensor_enhanced_settings)
1032{
1033 struct hidpp_report response;
1034
1035 /*
1036 * Params:
1037 * bit 0 - enable raw
1038 * bit 1 - 16bit Z, no area
1039 * bit 2 - enhanced sensitivity
1040 * bit 3 - width, height (4 bits each) instead of area
1041 * bit 4 - send raw + gestures (degrades smoothness)
1042 * remaining bits - reserved
1043 */
1044 u8 params = send_raw_reports | (sensor_enhanced_settings << 2);
1045
1046 return hidpp_send_fap_command_sync(hidpp_dev, feature_index,
1047 CMD_TOUCHPAD_SET_RAW_REPORT_STATE, &params, 1, &response);
1048}
1049
1050static void hidpp_touchpad_touch_event(u8 *data,
1051 struct hidpp_touchpad_raw_xy_finger *finger)
1052{
1053 u8 x_m = data[0] << 2;
1054 u8 y_m = data[2] << 2;
1055
1056 finger->x = x_m << 6 | data[1];
1057 finger->y = y_m << 6 | data[3];
1058
1059 finger->contact_type = data[0] >> 6;
1060 finger->contact_status = data[2] >> 6;
1061
1062 finger->z = data[4];
1063 finger->area = data[5];
1064 finger->finger_id = data[6] >> 4;
1065}
1066
1067static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev,
1068 u8 *data, struct hidpp_touchpad_raw_xy *raw_xy)
1069{
1070 memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy));
1071 raw_xy->end_of_frame = data[8] & 0x01;
1072 raw_xy->spurious_flag = (data[8] >> 1) & 0x01;
1073 raw_xy->finger_count = data[15] & 0x0f;
1074 raw_xy->button = (data[8] >> 2) & 0x01;
1075
1076 if (raw_xy->finger_count) {
1077 hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]);
1078 hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]);
1079 }
1080}
1081
ff21a635
EV		 1082/* -------------------------------------------------------------------------- */
1083/* 0x8123: Force feedback support */
1084/* -------------------------------------------------------------------------- */
1085
1086#define HIDPP_FF_GET_INFO 0x01
1087#define HIDPP_FF_RESET_ALL 0x11
1088#define HIDPP_FF_DOWNLOAD_EFFECT 0x21
1089#define HIDPP_FF_SET_EFFECT_STATE 0x31
1090#define HIDPP_FF_DESTROY_EFFECT 0x41
1091#define HIDPP_FF_GET_APERTURE 0x51
1092#define HIDPP_FF_SET_APERTURE 0x61
1093#define HIDPP_FF_GET_GLOBAL_GAINS 0x71
1094#define HIDPP_FF_SET_GLOBAL_GAINS 0x81
1095
1096#define HIDPP_FF_EFFECT_STATE_GET 0x00
1097#define HIDPP_FF_EFFECT_STATE_STOP 0x01
1098#define HIDPP_FF_EFFECT_STATE_PLAY 0x02
1099#define HIDPP_FF_EFFECT_STATE_PAUSE 0x03
1100
1101#define HIDPP_FF_EFFECT_CONSTANT 0x00
1102#define HIDPP_FF_EFFECT_PERIODIC_SINE 0x01
1103#define HIDPP_FF_EFFECT_PERIODIC_SQUARE 0x02
1104#define HIDPP_FF_EFFECT_PERIODIC_TRIANGLE 0x03
1105#define HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHUP 0x04
1106#define HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHDOWN 0x05
1107#define HIDPP_FF_EFFECT_SPRING 0x06
1108#define HIDPP_FF_EFFECT_DAMPER 0x07
1109#define HIDPP_FF_EFFECT_FRICTION 0x08
1110#define HIDPP_FF_EFFECT_INERTIA 0x09
1111#define HIDPP_FF_EFFECT_RAMP 0x0A
1112
1113#define HIDPP_FF_EFFECT_AUTOSTART 0x80
1114
1115#define HIDPP_FF_EFFECTID_NONE -1
1116#define HIDPP_FF_EFFECTID_AUTOCENTER -2
1117
1118#define HIDPP_FF_MAX_PARAMS 20
1119#define HIDPP_FF_RESERVED_SLOTS 1
1120
1121struct hidpp_ff_private_data {
1122 struct hidpp_device *hidpp;
1123 u8 feature_index;
1124 u8 version;
1125 u16 gain;
1126 s16 range;
1127 u8 slot_autocenter;
1128 u8 num_effects;
1129 int *effect_ids;
1130 struct workqueue_struct *wq;
1131 atomic_t workqueue_size;
1132};
1133
1134struct hidpp_ff_work_data {
1135 struct work_struct work;
1136 struct hidpp_ff_private_data *data;
1137 int effect_id;
1138 u8 command;
1139 u8 params[HIDPP_FF_MAX_PARAMS];
1140 u8 size;
1141};
1142
1143static const signed short hiddpp_ff_effects[] = {
1144 FF_CONSTANT,
1145 FF_PERIODIC,
1146 FF_SINE,
1147 FF_SQUARE,
1148 FF_SAW_UP,
1149 FF_SAW_DOWN,
1150 FF_TRIANGLE,
1151 FF_SPRING,
1152 FF_DAMPER,
1153 FF_AUTOCENTER,
1154 FF_GAIN,
1155 -1
1156};
1157
1158static const signed short hiddpp_ff_effects_v2[] = {
1159 FF_RAMP,
1160 FF_FRICTION,
1161 FF_INERTIA,
1162 -1
1163};
1164
1165static const u8 HIDPP_FF_CONDITION_CMDS[] = {
1166 HIDPP_FF_EFFECT_SPRING,
1167 HIDPP_FF_EFFECT_FRICTION,
1168 HIDPP_FF_EFFECT_DAMPER,
1169 HIDPP_FF_EFFECT_INERTIA
1170};
1171
1172static const char *HIDPP_FF_CONDITION_NAMES[] = {
1173 "spring",
1174 "friction",
1175 "damper",
1176 "inertia"
1177};
1178
1179
1180static u8 hidpp_ff_find_effect(struct hidpp_ff_private_data *data, int effect_id)
1181{
1182 int i;
1183
1184 for (i = 0; i < data->num_effects; i++)
1185 if (data->effect_ids[i] == effect_id)
1186 return i+1;
1187
1188 return 0;
1189}
1190
1191static void hidpp_ff_work_handler(struct work_struct *w)
1192{
1193 struct hidpp_ff_work_data *wd = container_of(w, struct hidpp_ff_work_data, work);
1194 struct hidpp_ff_private_data *data = wd->data;
1195 struct hidpp_report response;
1196 u8 slot;
1197 int ret;
1198
1199 /* add slot number if needed */
1200 switch (wd->effect_id) {
1201 case HIDPP_FF_EFFECTID_AUTOCENTER:
1202 wd->params[0] = data->slot_autocenter;
1203 break;
1204 case HIDPP_FF_EFFECTID_NONE:
1205 /* leave slot as zero */
1206 break;
1207 default:
1208 /* find current slot for effect */
1209 wd->params[0] = hidpp_ff_find_effect(data, wd->effect_id);
1210 break;
1211 }
1212
1213 /* send command and wait for reply */
1214 ret = hidpp_send_fap_command_sync(data->hidpp, data->feature_index,
1215 wd->command, wd->params, wd->size, &response);
1216
1217 if (ret) {
1218 hid_err(data->hidpp->hid_dev, "Failed to send command to device!\n");
1219 goto out;
1220 }
1221
1222 /* parse return data */
1223 switch (wd->command) {
1224 case HIDPP_FF_DOWNLOAD_EFFECT:
1225 slot = response.fap.params[0];
1226 if (slot > 0 && slot <= data->num_effects) {
1227 if (wd->effect_id >= 0)
1228 /* regular effect uploaded */
1229 data->effect_ids[slot-1] = wd->effect_id;
1230 else if (wd->effect_id >= HIDPP_FF_EFFECTID_AUTOCENTER)
1231 /* autocenter spring uploaded */
1232 data->slot_autocenter = slot;
1233 }
1234 break;
1235 case HIDPP_FF_DESTROY_EFFECT:
1236 if (wd->effect_id >= 0)
1237 /* regular effect destroyed */
1238 data->effect_ids[wd->params[0]-1] = -1;
1239 else if (wd->effect_id >= HIDPP_FF_EFFECTID_AUTOCENTER)
1240 /* autocenter spring destoyed */
1241 data->slot_autocenter = 0;
1242 break;
1243 case HIDPP_FF_SET_GLOBAL_GAINS:
1244 data->gain = (wd->params[0] << 8) + wd->params[1];
1245 break;
1246 case HIDPP_FF_SET_APERTURE:
1247 data->range = (wd->params[0] << 8) + wd->params[1];
1248 break;
1249 default:
1250 /* no action needed */
1251 break;
1252 }
1253
1254out:
1255 atomic_dec(&data->workqueue_size);
1256 kfree(wd);
1257}
1258
1259static int hidpp_ff_queue_work(struct hidpp_ff_private_data *data, int effect_id, u8 command, u8 *params, u8 size)
1260{
1261 struct hidpp_ff_work_data *wd = kzalloc(sizeof(*wd), GFP_KERNEL);
1262 int s;
1263
1264 if (!wd)
1265 return -ENOMEM;
1266
1267 INIT_WORK(&wd->work, hidpp_ff_work_handler);
1268
1269 wd->data = data;
1270 wd->effect_id = effect_id;
1271 wd->command = command;
1272 wd->size = size;
1273 memcpy(wd->params, params, size);
1274
1275 atomic_inc(&data->workqueue_size);
1276 queue_work(data->wq, &wd->work);
1277
1278 /* warn about excessive queue size */
1279 s = atomic_read(&data->workqueue_size);
1280 if (s >= 20 && s % 20 == 0)
1281 hid_warn(data->hidpp->hid_dev, "Force feedback command queue contains %d commands, causing substantial delays!", s);
1282
1283 return 0;
1284}
1285
1286static int hidpp_ff_upload_effect(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old)
1287{
1288 struct hidpp_ff_private_data *data = dev->ff->private;
1289 u8 params[20];
1290 u8 size;
1291 int force;
1292
1293 /* set common parameters */
1294 params[2] = effect->replay.length >> 8;
1295 params[3] = effect->replay.length & 255;
1296 params[4] = effect->replay.delay >> 8;
1297 params[5] = effect->replay.delay & 255;
1298
1299 switch (effect->type) {
1300 case FF_CONSTANT:
1301 force = (effect->u.constant.level * fixp_sin16((effect->direction * 360) >> 16)) >> 15;
1302 params[1] = HIDPP_FF_EFFECT_CONSTANT;
1303 params[6] = force >> 8;
1304 params[7] = force & 255;
1305 params[8] = effect->u.constant.envelope.attack_level >> 7;
1306 params[9] = effect->u.constant.envelope.attack_length >> 8;
1307 params[10] = effect->u.constant.envelope.attack_length & 255;
1308 params[11] = effect->u.constant.envelope.fade_level >> 7;
1309 params[12] = effect->u.constant.envelope.fade_length >> 8;
1310 params[13] = effect->u.constant.envelope.fade_length & 255;
1311 size = 14;
1312 dbg_hid("Uploading constant force level=%d in dir %d = %d\n",
1313 effect->u.constant.level,
1314 effect->direction, force);
1315 dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n",
1316 effect->u.constant.envelope.attack_level,
1317 effect->u.constant.envelope.attack_length,
1318 effect->u.constant.envelope.fade_level,
1319 effect->u.constant.envelope.fade_length);
1320 break;
1321 case FF_PERIODIC:
1322 {
1323 switch (effect->u.periodic.waveform) {
1324 case FF_SINE:
1325 params[1] = HIDPP_FF_EFFECT_PERIODIC_SINE;
1326 break;
1327 case FF_SQUARE:
1328 params[1] = HIDPP_FF_EFFECT_PERIODIC_SQUARE;
1329 break;
1330 case FF_SAW_UP:
1331 params[1] = HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHUP;
1332 break;
1333 case FF_SAW_DOWN:
1334 params[1] = HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHDOWN;
1335 break;
1336 case FF_TRIANGLE:
1337 params[1] = HIDPP_FF_EFFECT_PERIODIC_TRIANGLE;
1338 break;
1339 default:
1340 hid_err(data->hidpp->hid_dev, "Unexpected periodic waveform type %i!\n", effect->u.periodic.waveform);
1341 return -EINVAL;
1342 }
1343 force = (effect->u.periodic.magnitude * fixp_sin16((effect->direction * 360) >> 16)) >> 15;
1344 params[6] = effect->u.periodic.magnitude >> 8;
1345 params[7] = effect->u.periodic.magnitude & 255;
1346 params[8] = effect->u.periodic.offset >> 8;
1347 params[9] = effect->u.periodic.offset & 255;
1348 params[10] = effect->u.periodic.period >> 8;
1349 params[11] = effect->u.periodic.period & 255;
1350 params[12] = effect->u.periodic.phase >> 8;
1351 params[13] = effect->u.periodic.phase & 255;
1352 params[14] = effect->u.periodic.envelope.attack_level >> 7;
1353 params[15] = effect->u.periodic.envelope.attack_length >> 8;
1354 params[16] = effect->u.periodic.envelope.attack_length & 255;
1355 params[17] = effect->u.periodic.envelope.fade_level >> 7;
1356 params[18] = effect->u.periodic.envelope.fade_length >> 8;
1357 params[19] = effect->u.periodic.envelope.fade_length & 255;
1358 size = 20;
1359 dbg_hid("Uploading periodic force mag=%d/dir=%d, offset=%d, period=%d ms, phase=%d\n",
1360 effect->u.periodic.magnitude, effect->direction,
1361 effect->u.periodic.offset,
1362 effect->u.periodic.period,
1363 effect->u.periodic.phase);
1364 dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n",
1365 effect->u.periodic.envelope.attack_level,
1366 effect->u.periodic.envelope.attack_length,
1367 effect->u.periodic.envelope.fade_level,
1368 effect->u.periodic.envelope.fade_length);
1369 break;
1370 }
1371 case FF_RAMP:
1372 params[1] = HIDPP_FF_EFFECT_RAMP;
1373 force = (effect->u.ramp.start_level * fixp_sin16((effect->direction * 360) >> 16)) >> 15;
1374 params[6] = force >> 8;
1375 params[7] = force & 255;
1376 force = (effect->u.ramp.end_level * fixp_sin16((effect->direction * 360) >> 16)) >> 15;
1377 params[8] = force >> 8;
1378 params[9] = force & 255;
1379 params[10] = effect->u.ramp.envelope.attack_level >> 7;
1380 params[11] = effect->u.ramp.envelope.attack_length >> 8;
1381 params[12] = effect->u.ramp.envelope.attack_length & 255;
1382 params[13] = effect->u.ramp.envelope.fade_level >> 7;
1383 params[14] = effect->u.ramp.envelope.fade_length >> 8;
1384 params[15] = effect->u.ramp.envelope.fade_length & 255;
1385 size = 16;
1386 dbg_hid("Uploading ramp force level=%d -> %d in dir %d = %d\n",
1387 effect->u.ramp.start_level,
1388 effect->u.ramp.end_level,
1389 effect->direction, force);
1390 dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n",
1391 effect->u.ramp.envelope.attack_level,
1392 effect->u.ramp.envelope.attack_length,
1393 effect->u.ramp.envelope.fade_level,
1394 effect->u.ramp.envelope.fade_length);
1395 break;
1396 case FF_FRICTION:
1397 case FF_INERTIA:
1398 case FF_SPRING:
1399 case FF_DAMPER:
1400 params[1] = HIDPP_FF_CONDITION_CMDS[effect->type - FF_SPRING];
1401 params[6] = effect->u.condition[0].left_saturation >> 9;
1402 params[7] = (effect->u.condition[0].left_saturation >> 1) & 255;
1403 params[8] = effect->u.condition[0].left_coeff >> 8;
1404 params[9] = effect->u.condition[0].left_coeff & 255;
1405 params[10] = effect->u.condition[0].deadband >> 9;
1406 params[11] = (effect->u.condition[0].deadband >> 1) & 255;
1407 params[12] = effect->u.condition[0].center >> 8;
1408 params[13] = effect->u.condition[0].center & 255;
1409 params[14] = effect->u.condition[0].right_coeff >> 8;
1410 params[15] = effect->u.condition[0].right_coeff & 255;
1411 params[16] = effect->u.condition[0].right_saturation >> 9;
1412 params[17] = (effect->u.condition[0].right_saturation >> 1) & 255;
1413 size = 18;
1414 dbg_hid("Uploading %s force left coeff=%d, left sat=%d, right coeff=%d, right sat=%d\n",
1415 HIDPP_FF_CONDITION_NAMES[effect->type - FF_SPRING],
1416 effect->u.condition[0].left_coeff,
1417 effect->u.condition[0].left_saturation,
1418 effect->u.condition[0].right_coeff,
1419 effect->u.condition[0].right_saturation);
1420 dbg_hid(" deadband=%d, center=%d\n",
1421 effect->u.condition[0].deadband,
1422 effect->u.condition[0].center);
1423 break;
1424 default:
1425 hid_err(data->hidpp->hid_dev, "Unexpected force type %i!\n", effect->type);
1426 return -EINVAL;
1427 }
1428
1429 return hidpp_ff_queue_work(data, effect->id, HIDPP_FF_DOWNLOAD_EFFECT, params, size);
1430}
1431
1432static int hidpp_ff_playback(struct input_dev *dev, int effect_id, int value)
1433{
1434 struct hidpp_ff_private_data *data = dev->ff->private;
1435 u8 params[2];
1436
1437 params[1] = value ? HIDPP_FF_EFFECT_STATE_PLAY : HIDPP_FF_EFFECT_STATE_STOP;
1438
1439 dbg_hid("St%sing playback of effect %d.\n", value?"art":"opp", effect_id);
1440
1441 return hidpp_ff_queue_work(data, effect_id, HIDPP_FF_SET_EFFECT_STATE, params, ARRAY_SIZE(params));
1442}
1443
1444static int hidpp_ff_erase_effect(struct input_dev *dev, int effect_id)
1445{
1446 struct hidpp_ff_private_data *data = dev->ff->private;
1447 u8 slot = 0;
1448
1449 dbg_hid("Erasing effect %d.\n", effect_id);
1450
1451 return hidpp_ff_queue_work(data, effect_id, HIDPP_FF_DESTROY_EFFECT, &slot, 1);
1452}
1453
1454static void hidpp_ff_set_autocenter(struct input_dev *dev, u16 magnitude)
1455{
1456 struct hidpp_ff_private_data *data = dev->ff->private;
1457 u8 params[18];
1458
1459 dbg_hid("Setting autocenter to %d.\n", magnitude);
1460
1461 /* start a standard spring effect */
1462 params[1] = HIDPP_FF_EFFECT_SPRING | HIDPP_FF_EFFECT_AUTOSTART;
1463 /* zero delay and duration */
1464 params[2] = params[3] = params[4] = params[5] = 0;
1465 /* set coeff to 25% of saturation */
1466 params[8] = params[14] = magnitude >> 11;
1467 params[9] = params[15] = (magnitude >> 3) & 255;
1468 params[6] = params[16] = magnitude >> 9;
1469 params[7] = params[17] = (magnitude >> 1) & 255;
1470 /* zero deadband and center */
1471 params[10] = params[11] = params[12] = params[13] = 0;
1472
1473 hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_AUTOCENTER, HIDPP_FF_DOWNLOAD_EFFECT, params, ARRAY_SIZE(params));
1474}
1475
1476static void hidpp_ff_set_gain(struct input_dev *dev, u16 gain)
1477{
1478 struct hidpp_ff_private_data *data = dev->ff->private;
1479 u8 params[4];
1480
1481 dbg_hid("Setting gain to %d.\n", gain);
1482
1483 params[0] = gain >> 8;
1484 params[1] = gain & 255;
1485 params[2] = 0; /* no boost */
1486 params[3] = 0;
1487
1488 hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_NONE, HIDPP_FF_SET_GLOBAL_GAINS, params, ARRAY_SIZE(params));
1489}
1490
1491static ssize_t hidpp_ff_range_show(struct device *dev, struct device_attribute *attr, char *buf)
1492{
1493 struct hid_device *hid = to_hid_device(dev);
1494 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
1495 struct input_dev *idev = hidinput->input;
1496 struct hidpp_ff_private_data *data = idev->ff->private;
1497
1498 return scnprintf(buf, PAGE_SIZE, "%u\n", data->range);
1499}
1500
1501static ssize_t hidpp_ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
1502{
1503 struct hid_device *hid = to_hid_device(dev);
1504 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
1505 struct input_dev *idev = hidinput->input;
1506 struct hidpp_ff_private_data *data = idev->ff->private;
1507 u8 params[2];
1508 int range = simple_strtoul(buf, NULL, 10);
1509
1510 range = clamp(range, 180, 900);
1511
1512 params[0] = range >> 8;
1513 params[1] = range & 0x00FF;
1514
1515 hidpp_ff_queue_work(data, -1, HIDPP_FF_SET_APERTURE, params, ARRAY_SIZE(params));
1516
1517 return count;
1518}
1519
1520static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, hidpp_ff_range_show, hidpp_ff_range_store);
1521
1522static void hidpp_ff_destroy(struct ff_device *ff)
1523{
1524 struct hidpp_ff_private_data *data = ff->private;
1525
1526 kfree(data->effect_ids);
1527}
1528
af2e628d 1529static int hidpp_ff_init(struct hidpp_device *hidpp, u8 feature_index)
ff21a635
EV		 1530{
1531 struct hid_device *hid = hidpp->hid_dev;
1532 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
1533 struct input_dev *dev = hidinput->input;
1534 const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor);
1535 const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice);
1536 struct ff_device *ff;
1537 struct hidpp_report response;
1538 struct hidpp_ff_private_data *data;
1539 int error, j, num_slots;
1540 u8 version;
1541
1542 if (!dev) {
1543 hid_err(hid, "Struct input_dev not set!\n");
1544 return -EINVAL;
1545 }
1546
1547 /* Get firmware release */
1548 version = bcdDevice & 255;
1549
1550 /* Set supported force feedback capabilities */
1551 for (j = 0; hiddpp_ff_effects[j] >= 0; j++)
1552 set_bit(hiddpp_ff_effects[j], dev->ffbit);
1553 if (version > 1)
1554 for (j = 0; hiddpp_ff_effects_v2[j] >= 0; j++)
1555 set_bit(hiddpp_ff_effects_v2[j], dev->ffbit);
1556
1557 /* Read number of slots available in device */
1558 error = hidpp_send_fap_command_sync(hidpp, feature_index,
1559 HIDPP_FF_GET_INFO, NULL, 0, &response);
1560 if (error) {
1561 if (error < 0)
1562 return error;
1563 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
1564 __func__, error);
1565 return -EPROTO;
1566 }
1567
1568 num_slots = response.fap.params[0] - HIDPP_FF_RESERVED_SLOTS;
1569
1570 error = input_ff_create(dev, num_slots);
1571
1572 if (error) {
1573 hid_err(dev, "Failed to create FF device!\n");
1574 return error;
1575 }
1576
1577 data = kzalloc(sizeof(*data), GFP_KERNEL);
1578 if (!data)
1579 return -ENOMEM;
1580 data->effect_ids = kcalloc(num_slots, sizeof(int), GFP_KERNEL);
1581 if (!data->effect_ids) {
1582 kfree(data);
1583 return -ENOMEM;
1584 }
1585 data->hidpp = hidpp;
1586 data->feature_index = feature_index;
1587 data->version = version;
1588 data->slot_autocenter = 0;
1589 data->num_effects = num_slots;
1590 for (j = 0; j < num_slots; j++)
1591 data->effect_ids[j] = -1;
1592
1593 ff = dev->ff;
1594 ff->private = data;
1595
1596 ff->upload = hidpp_ff_upload_effect;
1597 ff->erase = hidpp_ff_erase_effect;
1598 ff->playback = hidpp_ff_playback;
1599 ff->set_gain = hidpp_ff_set_gain;
1600 ff->set_autocenter = hidpp_ff_set_autocenter;
1601 ff->destroy = hidpp_ff_destroy;
1602
1603
1604 /* reset all forces */
1605 error = hidpp_send_fap_command_sync(hidpp, feature_index,
1606 HIDPP_FF_RESET_ALL, NULL, 0, &response);
1607
1608 /* Read current Range */
1609 error = hidpp_send_fap_command_sync(hidpp, feature_index,
1610 HIDPP_FF_GET_APERTURE, NULL, 0, &response);
1611 if (error)
1612 hid_warn(hidpp->hid_dev, "Failed to read range from device!\n");
1613 data->range = error ? 900 : get_unaligned_be16(&response.fap.params[0]);
1614
1615 /* Create sysfs interface */
1616 error = device_create_file(&(hidpp->hid_dev->dev), &dev_attr_range);
1617 if (error)
1618 hid_warn(hidpp->hid_dev, "Unable to create sysfs interface for \"range\", errno %d!\n", error);
1619
1620 /* Read the current gain values */
1621 error = hidpp_send_fap_command_sync(hidpp, feature_index,
1622 HIDPP_FF_GET_GLOBAL_GAINS, NULL, 0, &response);
1623 if (error)
1624 hid_warn(hidpp->hid_dev, "Failed to read gain values from device!\n");
1625 data->gain = error ? 0xffff : get_unaligned_be16(&response.fap.params[0]);
1626 /* ignore boost value at response.fap.params[2] */
1627
1628 /* init the hardware command queue */
1629 data->wq = create_singlethread_workqueue("hidpp-ff-sendqueue");
1630 atomic_set(&data->workqueue_size, 0);
1631
1632 /* initialize with zero autocenter to get wheel in usable state */
1633 hidpp_ff_set_autocenter(dev, 0);
1634
1635 hid_info(hid, "Force feeback support loaded (firmware release %d).\n", version);
1636
1637 return 0;
1638}
1639
af2e628d 1640static int hidpp_ff_deinit(struct hid_device *hid)
ff21a635
EV		 1641{
1642 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
1643 struct input_dev *dev = hidinput->input;
1644 struct hidpp_ff_private_data *data;
1645
1646 if (!dev) {
1647 hid_err(hid, "Struct input_dev not found!\n");
1648 return -EINVAL;
1649 }
1650
1651 hid_info(hid, "Unloading HID++ force feedback.\n");
1652 data = dev->ff->private;
1653 if (!data) {
1654 hid_err(hid, "Private data not found!\n");
1655 return -EINVAL;
1656 }
1657
1658 destroy_workqueue(data->wq);
1659 device_remove_file(&hid->dev, &dev_attr_range);
1660
1661 return 0;
1662}
1663
1664
2f31c525
BT		 1665/* ************************************************************************** */
1666/* */
1667/* Device Support */
1668/* */
1669/* ************************************************************************** */
1670
1671/* -------------------------------------------------------------------------- */
1672/* Touchpad HID++ devices */
1673/* -------------------------------------------------------------------------- */
1674
57ac86cf
BT		 1675#define WTP_MANUAL_RESOLUTION 39
1676
2f31c525
BT		 1677struct wtp_data {
1678 struct input_dev *input;
1679 u16 x_size, y_size;
1680 u8 finger_count;
1681 u8 mt_feature_index;
1682 u8 button_feature_index;
1683 u8 maxcontacts;
1684 bool flip_y;
1685 unsigned int resolution;
1686};
1687
1688static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1689 struct hid_field *field, struct hid_usage *usage,
1690 unsigned long **bit, int *max)
1691{
1692 return -1;
1693}
1694
c39e3d5f
BT		 1695static void wtp_populate_input(struct hidpp_device *hidpp,
1696 struct input_dev *input_dev, bool origin_is_hid_core)
2f31c525 1697{
2f31c525 1698 struct wtp_data *wd = hidpp->private_data;
2f31c525
BT		 1699
1700 __set_bit(EV_ABS, input_dev->evbit);
1701 __set_bit(EV_KEY, input_dev->evbit);
1702 __clear_bit(EV_REL, input_dev->evbit);
1703 __clear_bit(EV_LED, input_dev->evbit);
1704
1705 input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0);
1706 input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution);
1707 input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0);
1708 input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution);
1709
1710 /* Max pressure is not given by the devices, pick one */
1711 input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0);
1712
1713 input_set_capability(input_dev, EV_KEY, BTN_LEFT);
1714
57ac86cf
BT		 1715 if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)
1716 input_set_capability(input_dev, EV_KEY, BTN_RIGHT);
1717 else
1718 __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
2f31c525
BT		 1719
1720 input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER |
1721 INPUT_MT_DROP_UNUSED);
1722
1723 wd->input = input_dev;
1724}
1725
1726static void wtp_touch_event(struct wtp_data *wd,
1727 struct hidpp_touchpad_raw_xy_finger *touch_report)
1728{
1729 int slot;
1730
1731 if (!touch_report->finger_id || touch_report->contact_type)
1732 /* no actual data */
1733 return;
1734
1735 slot = input_mt_get_slot_by_key(wd->input, touch_report->finger_id);
1736
1737 input_mt_slot(wd->input, slot);
1738 input_mt_report_slot_state(wd->input, MT_TOOL_FINGER,
1739 touch_report->contact_status);
1740 if (touch_report->contact_status) {
1741 input_event(wd->input, EV_ABS, ABS_MT_POSITION_X,
1742 touch_report->x);
1743 input_event(wd->input, EV_ABS, ABS_MT_POSITION_Y,
1744 wd->flip_y ? wd->y_size - touch_report->y :
1745 touch_report->y);
1746 input_event(wd->input, EV_ABS, ABS_MT_PRESSURE,
1747 touch_report->area);
1748 }
1749}
1750
1751static void wtp_send_raw_xy_event(struct hidpp_device *hidpp,
1752 struct hidpp_touchpad_raw_xy *raw)
1753{
1754 struct wtp_data *wd = hidpp->private_data;
1755 int i;
1756
1757 for (i = 0; i < 2; i++)
1758 wtp_touch_event(wd, &(raw->fingers[i]));
1759
57ac86cf
BT		 1760 if (raw->end_of_frame &&
1761 !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS))
2f31c525
BT		 1762 input_event(wd->input, EV_KEY, BTN_LEFT, raw->button);
1763
1764 if (raw->end_of_frame || raw->finger_count <= 2) {
1765 input_mt_sync_frame(wd->input);
1766 input_sync(wd->input);
1767 }
1768}
1769
1770static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data)
1771{
1772 struct wtp_data *wd = hidpp->private_data;
1773 u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) +
1774 (data[7] >> 4) * (data[7] >> 4)) / 2;
1775 u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) +
1776 (data[13] >> 4) * (data[13] >> 4)) / 2;
1777 struct hidpp_touchpad_raw_xy raw = {
1778 .timestamp = data[1],
1779 .fingers = {
1780 {
1781 .contact_type = 0,
1782 .contact_status = !!data[7],
1783 .x = get_unaligned_le16(&data[3]),
1784 .y = get_unaligned_le16(&data[5]),
1785 .z = c1_area,
1786 .area = c1_area,
1787 .finger_id = data[2],
1788 }, {
1789 .contact_type = 0,
1790 .contact_status = !!data[13],
1791 .x = get_unaligned_le16(&data[9]),
1792 .y = get_unaligned_le16(&data[11]),
1793 .z = c2_area,
1794 .area = c2_area,
1795 .finger_id = data[8],
1796 }
1797 },
1798 .finger_count = wd->maxcontacts,
1799 .spurious_flag = 0,
1800 .end_of_frame = (data[0] >> 7) == 0,
1801 .button = data[0] & 0x01,
1802 };
1803
1804 wtp_send_raw_xy_event(hidpp, &raw);
1805
1806 return 1;
1807}
1808
1809static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size)
1810{
1811 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1812 struct wtp_data *wd = hidpp->private_data;
586bdc4e
BT		 1813 struct hidpp_report *report = (struct hidpp_report *)data;
1814 struct hidpp_touchpad_raw_xy raw;
2f31c525 1815
586bdc4e 1816 if (!wd || !wd->input)
2f31c525
BT		 1817 return 1;
1818
586bdc4e
BT		 1819 switch (data[0]) {
1820 case 0x02:
0b3f6569
PW		 1821 if (size < 2) {
1822 hid_err(hdev, "Received HID report of bad size (%d)",
1823 size);
1824 return 1;
1825 }
57ac86cf
BT		 1826 if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) {
1827 input_event(wd->input, EV_KEY, BTN_LEFT,
1828 !!(data[1] & 0x01));
1829 input_event(wd->input, EV_KEY, BTN_RIGHT,
1830 !!(data[1] & 0x02));
1831 input_sync(wd->input);
8abd8205 1832 return 0;
57ac86cf
BT		 1833 } else {
1834 if (size < 21)
1835 return 1;
1836 return wtp_mouse_raw_xy_event(hidpp, &data[7]);
1837 }
586bdc4e 1838 case REPORT_ID_HIDPP_LONG:
0b3f6569 1839 /* size is already checked in hidpp_raw_event. */
586bdc4e
BT		 1840 if ((report->fap.feature_index != wd->mt_feature_index) ||
1841 (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY))
1842 return 1;
1843 hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw);
1844
1845 wtp_send_raw_xy_event(hidpp, &raw);
1846 return 0;
1847 }
1848
1849 return 0;
2f31c525
BT		 1850}
1851
1852static int wtp_get_config(struct hidpp_device *hidpp)
1853{
1854 struct wtp_data *wd = hidpp->private_data;
1855 struct hidpp_touchpad_raw_info raw_info = {0};
1856 u8 feature_type;
1857 int ret;
1858
1859 ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY,
1860 &wd->mt_feature_index, &feature_type);
1861 if (ret)
1862 /* means that the device is not powered up */
1863 return ret;
1864
1865 ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index,
1866 &raw_info);
1867 if (ret)
1868 return ret;
1869
1870 wd->x_size = raw_info.x_size;
1871 wd->y_size = raw_info.y_size;
1872 wd->maxcontacts = raw_info.maxcontacts;
1873 wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT;
1874 wd->resolution = raw_info.res;
57ac86cf
BT		 1875 if (!wd->resolution)
1876 wd->resolution = WTP_MANUAL_RESOLUTION;
2f31c525
BT		 1877
1878 return 0;
1879}
1880
1881static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id)
1882{
1883 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1884 struct wtp_data *wd;
1885
1886 wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data),
1887 GFP_KERNEL);
1888 if (!wd)
1889 return -ENOMEM;
1890
1891 hidpp->private_data = wd;
1892
1893 return 0;
1894};
1895
bf159447 1896static int wtp_connect(struct hid_device *hdev, bool connected)
586bdc4e
BT		 1897{
1898 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1899 struct wtp_data *wd = hidpp->private_data;
1900 int ret;
1901
586bdc4e
BT		 1902 if (!wd->x_size) {
1903 ret = wtp_get_config(hidpp);
1904 if (ret) {
1905 hid_err(hdev, "Can not get wtp config: %d\n", ret);
bf159447 1906 return ret;
586bdc4e
BT		 1907 }
1908 }
1909
bf159447 1910 return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
586bdc4e
BT		 1911 true, true);
1912}
1913
8a09b4fa
GB		 1914/* ------------------------------------------------------------------------- */
1915/* Logitech M560 devices */
1916/* ------------------------------------------------------------------------- */
1917
1918/*
1919 * Logitech M560 protocol overview
1920 *
1921 * The Logitech M560 mouse, is designed for windows 8. When the middle and/or
1922 * the sides buttons are pressed, it sends some keyboard keys events
1923 * instead of buttons ones.
1924 * To complicate things further, the middle button keys sequence
1925 * is different from the odd press and the even press.
1926 *
1927 * forward button -> Super_R
1928 * backward button -> Super_L+'d' (press only)
1929 * middle button -> 1st time: Alt_L+SuperL+XF86TouchpadOff (press only)
1930 * 2nd time: left-click (press only)
1931 * NB: press-only means that when the button is pressed, the
1932 * KeyPress/ButtonPress and KeyRelease/ButtonRelease events are generated
1933 * together sequentially; instead when the button is released, no event is
1934 * generated !
1935 *
1936 * With the command
1937 * 10<xx>0a 3500af03 (where <xx> is the mouse id),
1938 * the mouse reacts differently:
1939 * - it never sends a keyboard key event
1940 * - for the three mouse button it sends:
1941 * middle button press 11<xx>0a 3500af00...
1942 * side 1 button (forward) press 11<xx>0a 3500b000...
1943 * side 2 button (backward) press 11<xx>0a 3500ae00...
1944 * middle/side1/side2 button release 11<xx>0a 35000000...
1945 */
1946
1947static const u8 m560_config_parameter[] = {0x00, 0xaf, 0x03};
1948
1949struct m560_private_data {
1950 struct input_dev *input;
1951};
1952
1953/* how buttons are mapped in the report */
1954#define M560_MOUSE_BTN_LEFT 0x01
1955#define M560_MOUSE_BTN_RIGHT 0x02
1956#define M560_MOUSE_BTN_WHEEL_LEFT 0x08
1957#define M560_MOUSE_BTN_WHEEL_RIGHT 0x10
1958
1959#define M560_SUB_ID 0x0a
1960#define M560_BUTTON_MODE_REGISTER 0x35
1961
1962static int m560_send_config_command(struct hid_device *hdev, bool connected)
1963{
1964 struct hidpp_report response;
1965 struct hidpp_device *hidpp_dev;
1966
1967 hidpp_dev = hid_get_drvdata(hdev);
1968
8a09b4fa
GB		 1969 return hidpp_send_rap_command_sync(
1970 hidpp_dev,
1971 REPORT_ID_HIDPP_SHORT,
1972 M560_SUB_ID,
1973 M560_BUTTON_MODE_REGISTER,
1974 (u8 *)m560_config_parameter,
1975 sizeof(m560_config_parameter),
1976 &response
1977 );
1978}
1979
1980static int m560_allocate(struct hid_device *hdev)
1981{
1982 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1983 struct m560_private_data *d;
1984
1985 d = devm_kzalloc(&hdev->dev, sizeof(struct m560_private_data),
1986 GFP_KERNEL);
1987 if (!d)
1988 return -ENOMEM;
1989
1990 hidpp->private_data = d;
1991
1992 return 0;
1993};
1994
1995static int m560_raw_event(struct hid_device *hdev, u8 *data, int size)
1996{
1997 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1998 struct m560_private_data *mydata = hidpp->private_data;
1999
2000 /* sanity check */
2001 if (!mydata || !mydata->input) {
2002 hid_err(hdev, "error in parameter\n");
2003 return -EINVAL;
2004 }
2005
2006 if (size < 7) {
2007 hid_err(hdev, "error in report\n");
2008 return 0;
2009 }
2010
2011 if (data[0] == REPORT_ID_HIDPP_LONG &&
2012 data[2] == M560_SUB_ID && data[6] == 0x00) {
2013 /*
2014 * m560 mouse report for middle, forward and backward button
2015 *
2016 * data[0] = 0x11
2017 * data[1] = device-id
2018 * data[2] = 0x0a
2019 * data[5] = 0xaf -> middle
2020 * 0xb0 -> forward
2021 * 0xae -> backward
2022 * 0x00 -> release all
2023 * data[6] = 0x00
2024 */
2025
2026 switch (data[5]) {
2027 case 0xaf:
2028 input_report_key(mydata->input, BTN_MIDDLE, 1);
2029 break;
2030 case 0xb0:
2031 input_report_key(mydata->input, BTN_FORWARD, 1);
2032 break;
2033 case 0xae:
2034 input_report_key(mydata->input, BTN_BACK, 1);
2035 break;
2036 case 0x00:
2037 input_report_key(mydata->input, BTN_BACK, 0);
2038 input_report_key(mydata->input, BTN_FORWARD, 0);
2039 input_report_key(mydata->input, BTN_MIDDLE, 0);
2040 break;
2041 default:
2042 hid_err(hdev, "error in report\n");
2043 return 0;
2044 }
2045 input_sync(mydata->input);
2046
2047 } else if (data[0] == 0x02) {
2048 /*
2049 * Logitech M560 mouse report
2050 *
2051 * data[0] = type (0x02)
2052 * data[1..2] = buttons
2053 * data[3..5] = xy
2054 * data[6] = wheel
2055 */
2056
2057 int v;
2058
2059 input_report_key(mydata->input, BTN_LEFT,
2060 !!(data[1] & M560_MOUSE_BTN_LEFT));
2061 input_report_key(mydata->input, BTN_RIGHT,
2062 !!(data[1] & M560_MOUSE_BTN_RIGHT));
2063
2064 if (data[1] & M560_MOUSE_BTN_WHEEL_LEFT)
2065 input_report_rel(mydata->input, REL_HWHEEL, -1);
2066 else if (data[1] & M560_MOUSE_BTN_WHEEL_RIGHT)
2067 input_report_rel(mydata->input, REL_HWHEEL, 1);
2068
2069 v = hid_snto32(hid_field_extract(hdev, data+3, 0, 12), 12);
2070 input_report_rel(mydata->input, REL_X, v);
2071
2072 v = hid_snto32(hid_field_extract(hdev, data+3, 12, 12), 12);
2073 input_report_rel(mydata->input, REL_Y, v);
2074
2075 v = hid_snto32(data[6], 8);
2076 input_report_rel(mydata->input, REL_WHEEL, v);
2077
2078 input_sync(mydata->input);
2079 }
2080
2081 return 1;
2082}
2083
2084static void m560_populate_input(struct hidpp_device *hidpp,
2085 struct input_dev *input_dev, bool origin_is_hid_core)
2086{
2087 struct m560_private_data *mydata = hidpp->private_data;
2088
2089 mydata->input = input_dev;
2090
2091 __set_bit(EV_KEY, mydata->input->evbit);
2092 __set_bit(BTN_MIDDLE, mydata->input->keybit);
2093 __set_bit(BTN_RIGHT, mydata->input->keybit);
2094 __set_bit(BTN_LEFT, mydata->input->keybit);
2095 __set_bit(BTN_BACK, mydata->input->keybit);
2096 __set_bit(BTN_FORWARD, mydata->input->keybit);
2097
2098 __set_bit(EV_REL, mydata->input->evbit);
2099 __set_bit(REL_X, mydata->input->relbit);
2100 __set_bit(REL_Y, mydata->input->relbit);
2101 __set_bit(REL_WHEEL, mydata->input->relbit);
2102 __set_bit(REL_HWHEEL, mydata->input->relbit);
2103}
2104
2105static int m560_input_mapping(struct hid_device *hdev, struct hid_input *hi,
2106 struct hid_field *field, struct hid_usage *usage,
2107 unsigned long **bit, int *max)
2108{
2109 return -1;
2110}
2111
90cdd986
BT		 2112/* ------------------------------------------------------------------------- */
2113/* Logitech K400 devices */
2114/* ------------------------------------------------------------------------- */
2115
2116/*
2117 * The Logitech K400 keyboard has an embedded touchpad which is seen
2118 * as a mouse from the OS point of view. There is a hardware shortcut to disable
2119 * tap-to-click but the setting is not remembered accross reset, annoying some
2120 * users.
2121 *
2122 * We can toggle this feature from the host by using the feature 0x6010:
2123 * Touchpad FW items
2124 */
2125
2126struct k400_private_data {
2127 u8 feature_index;
2128};
2129
2130static int k400_disable_tap_to_click(struct hidpp_device *hidpp)
2131{
2132 struct k400_private_data *k400 = hidpp->private_data;
2133 struct hidpp_touchpad_fw_items items = {};
2134 int ret;
2135 u8 feature_type;
2136
2137 if (!k400->feature_index) {
2138 ret = hidpp_root_get_feature(hidpp,
2139 HIDPP_PAGE_TOUCHPAD_FW_ITEMS,
2140 &k400->feature_index, &feature_type);
2141 if (ret)
2142 /* means that the device is not powered up */
2143 return ret;
2144 }
2145
2146 ret = hidpp_touchpad_fw_items_set(hidpp, k400->feature_index, &items);
2147 if (ret)
2148 return ret;
2149
2150 return 0;
2151}
2152
2153static int k400_allocate(struct hid_device *hdev)
2154{
2155 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2156 struct k400_private_data *k400;
2157
2158 k400 = devm_kzalloc(&hdev->dev, sizeof(struct k400_private_data),
2159 GFP_KERNEL);
2160 if (!k400)
2161 return -ENOMEM;
2162
2163 hidpp->private_data = k400;
2164
2165 return 0;
2166};
2167
2168static int k400_connect(struct hid_device *hdev, bool connected)
2169{
2170 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2171
90cdd986
BT		 2172 if (!disable_tap_to_click)
2173 return 0;
2174
2175 return k400_disable_tap_to_click(hidpp);
2176}
2177
7f4b49fe
SW		 2178/* ------------------------------------------------------------------------- */
2179/* Logitech G920 Driving Force Racing Wheel for Xbox One */
2180/* ------------------------------------------------------------------------- */
2181
2182#define HIDPP_PAGE_G920_FORCE_FEEDBACK 0x8123
2183
7f4b49fe
SW		 2184static int g920_get_config(struct hidpp_device *hidpp)
2185{
7f4b49fe
SW		 2186 u8 feature_type;
2187 u8 feature_index;
2188 int ret;
2189
7f4b49fe
SW		 2190 /* Find feature and store for later use */
2191 ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_G920_FORCE_FEEDBACK,
2192 &feature_index, &feature_type);
2193 if (ret)
2194 return ret;
2195
ff21a635 2196 ret = hidpp_ff_init(hidpp, feature_index);
7f4b49fe 2197 if (ret)
ff21a635
EV		 2198 hid_warn(hidpp->hid_dev, "Unable to initialize force feedback support, errno %d\n",
2199 ret);
7f4b49fe
SW		 2200
2201 return 0;
2202}
2203
2f31c525
BT		 2204/* -------------------------------------------------------------------------- */
2205/* Generic HID++ devices */
2206/* -------------------------------------------------------------------------- */
2207
2208static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
2209 struct hid_field *field, struct hid_usage *usage,
2210 unsigned long **bit, int *max)
2211{
2212 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2213
2214 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
2215 return wtp_input_mapping(hdev, hi, field, usage, bit, max);
8a09b4fa
GB		 2216 else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560 &&
2217 field->application != HID_GD_MOUSE)
2218 return m560_input_mapping(hdev, hi, field, usage, bit, max);
2f31c525
BT		 2219
2220 return 0;
2221}
2222
0b1804e3
SW		 2223static int hidpp_input_mapped(struct hid_device *hdev, struct hid_input *hi,
2224 struct hid_field *field, struct hid_usage *usage,
2225 unsigned long **bit, int *max)
2226{
2227 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2228
2229 /* Ensure that Logitech G920 is not given a default fuzz/flat value */
2230 if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
2231 if (usage->type == EV_ABS && (usage->code == ABS_X ||
2232 usage->code == ABS_Y || usage->code == ABS_Z ||
2233 usage->code == ABS_RZ)) {
2234 field->application = HID_GD_MULTIAXIS;
2235 }
2236 }
2237
2238 return 0;
2239}
2240
2241
c39e3d5f
BT		 2242static void hidpp_populate_input(struct hidpp_device *hidpp,
2243 struct input_dev *input, bool origin_is_hid_core)
2244{
2245 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
2246 wtp_populate_input(hidpp, input, origin_is_hid_core);
8a09b4fa
GB		 2247 else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)
2248 m560_populate_input(hidpp, input, origin_is_hid_core);
c39e3d5f
BT		 2249}
2250
b2c68a2f 2251static int hidpp_input_configured(struct hid_device *hdev,
2f31c525
BT		 2252 struct hid_input *hidinput)
2253{
2254 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
c39e3d5f 2255 struct input_dev *input = hidinput->input;
2f31c525 2256
c39e3d5f 2257 hidpp_populate_input(hidpp, input, true);
b2c68a2f
DT		 2258
2259 return 0;
2f31c525
BT		 2260}
2261
2262static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
2263 int size)
2264{
2265 struct hidpp_report *question = hidpp->send_receive_buf;
2266 struct hidpp_report *answer = hidpp->send_receive_buf;
2267 struct hidpp_report *report = (struct hidpp_report *)data;
eb626c57 2268 int ret;
2f31c525
BT		 2269
2270 /*
2271 * If the mutex is locked then we have a pending answer from a
e529fea9 2272 * previously sent command.
2f31c525
BT		 2273 */
2274 if (unlikely(mutex_is_locked(&hidpp->send_mutex))) {
2275 /*
2276 * Check for a correct hidpp20 answer or the corresponding
2277 * error
2278 */
2279 if (hidpp_match_answer(question, report) ||
2280 hidpp_match_error(question, report)) {
2281 *answer = *report;
2282 hidpp->answer_available = true;
2283 wake_up(&hidpp->wait);
2284 /*
2285 * This was an answer to a command that this driver sent
2286 * We return 1 to hid-core to avoid forwarding the
2287 * command upstream as it has been treated by the driver
2288 */
2289
2290 return 1;
2291 }
2292 }
2293
c39e3d5f
BT		 2294 if (unlikely(hidpp_report_is_connect_event(report))) {
2295 atomic_set(&hidpp->connected,
2296 !(report->rap.params[0] & (1 << 6)));
6bd4e65d 2297 if (schedule_work(&hidpp->work) == 0)
c39e3d5f
BT		 2298 dbg_hid("%s: connect event already queued\n", __func__);
2299 return 1;
2300 }
2301
eb626c57
BT		 2302 if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) {
2303 ret = hidpp20_battery_event(hidpp, data, size);
2304 if (ret != 0)
2305 return ret;
2306 }
2307
2f31c525
BT		 2308 return 0;
2309}
2310
2311static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report,
2312 u8 *data, int size)
2313{
2314 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
e529fea9 2315 int ret = 0;
2f31c525 2316
e529fea9 2317 /* Generic HID++ processing. */
2f31c525 2318 switch (data[0]) {
a5ce8f5b
SW		 2319 case REPORT_ID_HIDPP_VERY_LONG:
2320 if (size != HIDPP_REPORT_VERY_LONG_LENGTH) {
2321 hid_err(hdev, "received hid++ report of bad size (%d)",
2322 size);
2323 return 1;
2324 }
2325 ret = hidpp_raw_hidpp_event(hidpp, data, size);
2326 break;
2f31c525
BT		 2327 case REPORT_ID_HIDPP_LONG:
2328 if (size != HIDPP_REPORT_LONG_LENGTH) {
2329 hid_err(hdev, "received hid++ report of bad size (%d)",
2330 size);
2331 return 1;
2332 }
e529fea9
PW		 2333 ret = hidpp_raw_hidpp_event(hidpp, data, size);
2334 break;
2f31c525
BT		 2335 case REPORT_ID_HIDPP_SHORT:
2336 if (size != HIDPP_REPORT_SHORT_LENGTH) {
2337 hid_err(hdev, "received hid++ report of bad size (%d)",
2338 size);
2339 return 1;
2340 }
e529fea9
PW		 2341 ret = hidpp_raw_hidpp_event(hidpp, data, size);
2342 break;
2f31c525
BT		 2343 }
2344
e529fea9
PW		 2345 /* If no report is available for further processing, skip calling
2346 * raw_event of subclasses. */
2347 if (ret != 0)
2348 return ret;
2349
2f31c525
BT		 2350 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
2351 return wtp_raw_event(hdev, data, size);
8a09b4fa
GB		 2352 else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)
2353 return m560_raw_event(hdev, data, size);
2f31c525
BT		 2354
2355 return 0;
2356}
2357
843c624e 2358static void hidpp_overwrite_name(struct hid_device *hdev)
2f31c525
BT		 2359{
2360 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2361 char *name;
2f31c525 2362
843c624e 2363 if (hidpp->protocol_major < 2)
b4f8ce07 2364 return;
843c624e
BT		 2365
2366 name = hidpp_get_device_name(hidpp);
2f31c525 2367
7bfd2927 2368 if (!name) {
2f31c525 2369 hid_err(hdev, "unable to retrieve the name of the device");
7bfd2927
SW		 2370 } else {
2371 dbg_hid("HID++: Got name: %s\n", name);
2f31c525 2372 snprintf(hdev->name, sizeof(hdev->name), "%s", name);
7bfd2927 2373 }
2f31c525
BT		 2374
2375 kfree(name);
2376}
2377
c39e3d5f
BT		 2378static int hidpp_input_open(struct input_dev *dev)
2379{
2380 struct hid_device *hid = input_get_drvdata(dev);
2381
2382 return hid_hw_open(hid);
2383}
2384
2385static void hidpp_input_close(struct input_dev *dev)
2386{
2387 struct hid_device *hid = input_get_drvdata(dev);
2388
2389 hid_hw_close(hid);
2390}
2391
2392static struct input_dev *hidpp_allocate_input(struct hid_device *hdev)
2393{
2394 struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev);
005b3f57 2395 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
c39e3d5f
BT		 2396
2397 if (!input_dev)
2398 return NULL;
2399
2400 input_set_drvdata(input_dev, hdev);
2401 input_dev->open = hidpp_input_open;
2402 input_dev->close = hidpp_input_close;
2403
005b3f57 2404 input_dev->name = hidpp->name;
c39e3d5f
BT		 2405 input_dev->phys = hdev->phys;
2406 input_dev->uniq = hdev->uniq;
2407 input_dev->id.bustype = hdev->bus;
2408 input_dev->id.vendor = hdev->vendor;
2409 input_dev->id.product = hdev->product;
2410 input_dev->id.version = hdev->version;
2411 input_dev->dev.parent = &hdev->dev;
2412
2413 return input_dev;
2414}
2415
2416static void hidpp_connect_event(struct hidpp_device *hidpp)
2417{
2418 struct hid_device *hdev = hidpp->hid_dev;
2419 int ret = 0;
2420 bool connected = atomic_read(&hidpp->connected);
2421 struct input_dev *input;
2422 char *name, *devm_name;
c39e3d5f 2423
2936836f
BT		 2424 if (!connected)
2425 return;
2426
bf159447
BT		 2427 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
2428 ret = wtp_connect(hdev, connected);
2429 if (ret)
2430 return;
8a09b4fa
GB		 2431 } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {
2432 ret = m560_send_config_command(hdev, connected);
2433 if (ret)
2434 return;
90cdd986
BT		 2435 } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) {
2436 ret = k400_connect(hdev, connected);
2437 if (ret)
2438 return;
bf159447 2439 }
586bdc4e 2440
580a7e82
BT		 2441 /* the device is already connected, we can ask for its name and
2442 * protocol */
c39e3d5f
BT		 2443 if (!hidpp->protocol_major) {
2444 ret = !hidpp_is_connected(hidpp);
2445 if (ret) {
2446 hid_err(hdev, "Can not get the protocol version.\n");
2447 return;
2448 }
580a7e82
BT		 2449 hid_info(hdev, "HID++ %u.%u device connected.\n",
2450 hidpp->protocol_major, hidpp->protocol_minor);
c39e3d5f
BT		 2451 }
2452
187f2bba 2453 if (hidpp->name == hdev->name && hidpp->protocol_major >= 2) {
005b3f57
BT		 2454 name = hidpp_get_device_name(hidpp);
2455 if (!name) {
2456 hid_err(hdev,
2457 "unable to retrieve the name of the device");
2458 return;
2459 }
2460
2461 devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name);
2462 kfree(name);
2463 if (!devm_name)
2464 return;
2465
2466 hidpp->name = devm_name;
2467 }
2468
187f2bba
BT		 2469 hidpp_initialize_battery(hidpp);
2470
2936836f
BT		 2471 if (!(hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT) || hidpp->delayed_input)
2472 /* if the input nodes are already created, we can stop now */
187f2bba
BT		 2473 return;
2474
c39e3d5f
BT		 2475 input = hidpp_allocate_input(hdev);
2476 if (!input) {
2477 hid_err(hdev, "cannot allocate new input device: %d\n", ret);
2478 return;
2479 }
2480
c39e3d5f
BT		 2481 hidpp_populate_input(hidpp, input, false);
2482
2483 ret = input_register_device(input);
2484 if (ret)
2485 input_free_device(input);
2486
2487 hidpp->delayed_input = input;
2488}
2489
2f31c525
BT		 2490static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
2491{
2492 struct hidpp_device *hidpp;
2493 int ret;
2494 bool connected;
c39e3d5f 2495 unsigned int connect_mask = HID_CONNECT_DEFAULT;
2f31c525
BT		 2496
2497 hidpp = devm_kzalloc(&hdev->dev, sizeof(struct hidpp_device),
2498 GFP_KERNEL);
2499 if (!hidpp)
2500 return -ENOMEM;
2501
2502 hidpp->hid_dev = hdev;
005b3f57 2503 hidpp->name = hdev->name;
2f31c525
BT		 2504 hid_set_drvdata(hdev, hidpp);
2505
2506 hidpp->quirks = id->driver_data;
2507
843c624e
BT		 2508 if (id->group == HID_GROUP_LOGITECH_DJ_DEVICE)
2509 hidpp->quirks |= HIDPP_QUIRK_UNIFYING;
2510
9188dbae
BT		 2511 if (disable_raw_mode) {
2512 hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP;
580a7e82 2513 hidpp->quirks &= ~HIDPP_QUIRK_NO_HIDINPUT;
9188dbae
BT		 2514 }
2515
2f31c525
BT		 2516 if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
2517 ret = wtp_allocate(hdev, id);
2518 if (ret)
8a09b4fa
GB		 2519 goto allocate_fail;
2520 } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {
2521 ret = m560_allocate(hdev);
2522 if (ret)
2523 goto allocate_fail;
90cdd986
BT		 2524 } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) {
2525 ret = k400_allocate(hdev);
2526 if (ret)
2527 goto allocate_fail;
2f31c525
BT		 2528 }
2529
c39e3d5f 2530 INIT_WORK(&hidpp->work, delayed_work_cb);
2f31c525
BT		 2531 mutex_init(&hidpp->send_mutex);
2532 init_waitqueue_head(&hidpp->wait);
2533
2534 ret = hid_parse(hdev);
2535 if (ret) {
2536 hid_err(hdev, "%s:parse failed\n", __func__);
2537 goto hid_parse_fail;
2538 }
2539
7bfd2927
SW		 2540 if (hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT)
2541 connect_mask &= ~HID_CONNECT_HIDINPUT;
2542
2543 if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
2544 ret = hid_hw_start(hdev, connect_mask);
2545 if (ret) {
2546 hid_err(hdev, "hw start failed\n");
2547 goto hid_hw_start_fail;
2548 }
2549 ret = hid_hw_open(hdev);
2550 if (ret < 0) {
2551 dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n",
2552 __func__, ret);
2553 hid_hw_stop(hdev);
2554 goto hid_hw_start_fail;
2555 }
2556 }
2557
2558
2f31c525
BT		 2559 /* Allow incoming packets */
2560 hid_device_io_start(hdev);
2561
843c624e
BT		 2562 if (hidpp->quirks & HIDPP_QUIRK_UNIFYING)
2563 hidpp_unifying_init(hidpp);
2564
2f31c525 2565 connected = hidpp_is_connected(hidpp);
843c624e
BT		 2566 atomic_set(&hidpp->connected, connected);
2567 if (!(hidpp->quirks & HIDPP_QUIRK_UNIFYING)) {
ab94e562 2568 if (!connected) {
b832da56 2569 ret = -ENODEV;
ab94e562 2570 hid_err(hdev, "Device not connected");
7bfd2927 2571 goto hid_hw_open_failed;
ab94e562 2572 }
2f31c525 2573
ab94e562
BT		 2574 hid_info(hdev, "HID++ %u.%u device connected.\n",
2575 hidpp->protocol_major, hidpp->protocol_minor);
2f31c525 2576
843c624e
BT		 2577 hidpp_overwrite_name(hdev);
2578 }
33797820 2579
c39e3d5f 2580 if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) {
2f31c525
BT		 2581 ret = wtp_get_config(hidpp);
2582 if (ret)
7bfd2927 2583 goto hid_hw_open_failed;
7f4b49fe
SW		 2584 } else if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_G920)) {
2585 ret = g920_get_config(hidpp);
2586 if (ret)
2587 goto hid_hw_open_failed;
2f31c525
BT		 2588 }
2589
2590 /* Block incoming packets */
2591 hid_device_io_stop(hdev);
2592
7bfd2927
SW		 2593 if (!(hidpp->quirks & HIDPP_QUIRK_CLASS_G920)) {
2594 ret = hid_hw_start(hdev, connect_mask);
2595 if (ret) {
2596 hid_err(hdev, "%s:hid_hw_start returned error\n", __func__);
2597 goto hid_hw_start_fail;
2598 }
2f31c525
BT		 2599 }
2600
6bd4e65d
BT		 2601 /* Allow incoming packets */
2602 hid_device_io_start(hdev);
c39e3d5f 2603
6bd4e65d 2604 hidpp_connect_event(hidpp);
c39e3d5f 2605
2f31c525
BT		 2606 return ret;
2607
7bfd2927
SW		 2608hid_hw_open_failed:
2609 hid_device_io_stop(hdev);
2610 if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
2611 hid_hw_close(hdev);
2612 hid_hw_stop(hdev);
2613 }
2f31c525
BT		 2614hid_hw_start_fail:
2615hid_parse_fail:
c39e3d5f 2616 cancel_work_sync(&hidpp->work);
2f31c525 2617 mutex_destroy(&hidpp->send_mutex);
8a09b4fa 2618allocate_fail:
2f31c525
BT		 2619 hid_set_drvdata(hdev, NULL);
2620 return ret;
2621}
2622
2623static void hidpp_remove(struct hid_device *hdev)
2624{
2625 struct hidpp_device *hidpp = hid_get_drvdata(hdev);
2626
7f4b49fe 2627 if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
ff21a635 2628 hidpp_ff_deinit(hdev);
7bfd2927 2629 hid_hw_close(hdev);
7f4b49fe 2630 }
7bfd2927 2631 hid_hw_stop(hdev);
c39e3d5f 2632 cancel_work_sync(&hidpp->work);
2f31c525 2633 mutex_destroy(&hidpp->send_mutex);
2f31c525
BT		 2634}
2635
2636static const struct hid_device_id hidpp_devices[] = {
57ac86cf
BT		 2637 { /* wireless touchpad */
2638 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
2639 USB_VENDOR_ID_LOGITECH, 0x4011),
2640 .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT |
2641 HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS },
586bdc4e
BT		 2642 { /* wireless touchpad T650 */
2643 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
2644 USB_VENDOR_ID_LOGITECH, 0x4101),
2645 .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT },
2f31c525
BT		 2646 { /* wireless touchpad T651 */
2647 HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
2648 USB_DEVICE_ID_LOGITECH_T651),
2649 .driver_data = HIDPP_QUIRK_CLASS_WTP },
8a09b4fa 2650 { /* Mouse logitech M560 */
3a61e975 2651 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
8a09b4fa
GB		 2652 USB_VENDOR_ID_LOGITECH, 0x402d),
2653 .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },
90cdd986
BT		 2654 { /* Keyboard logitech K400 */
2655 HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
2656 USB_VENDOR_ID_LOGITECH, 0x4024),
6bd4e65d 2657 .driver_data = HIDPP_QUIRK_CLASS_K400 },
ab94e562
BT		 2658
2659 { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
2660 USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
7bfd2927
SW		 2661
2662 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL),
2663 .driver_data = HIDPP_QUIRK_CLASS_G920 | HIDPP_QUIRK_FORCE_OUTPUT_REPORTS},
2f31c525
BT		 2664 {}
2665};
2666
2667MODULE_DEVICE_TABLE(hid, hidpp_devices);
2668
2669static struct hid_driver hidpp_driver = {
2670 .name = "logitech-hidpp-device",
2671 .id_table = hidpp_devices,
2672 .probe = hidpp_probe,
2673 .remove = hidpp_remove,
2674 .raw_event = hidpp_raw_event,
2675 .input_configured = hidpp_input_configured,
2676 .input_mapping = hidpp_input_mapping,
0b1804e3 2677 .input_mapped = hidpp_input_mapped,
2f31c525
BT		 2678};
2679
2680module_hid_driver(hidpp_driver);
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