btif/co/bta_hh_co.c

   1 /******************************************************************************
   2  *
   3  *  Copyright (C) 2009-2012 Broadcom Corporation
   4  *
   5  *  Licensed under the Apache License, Version 2.0 (the "License");
   6  *  you may not use this file except in compliance with the License.
   7  *  You may obtain a copy of the License at:
   8  *
   9  *  http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *  Unless required by applicable law or agreed to in writing, software
  12  *  distributed under the License is distributed on an "AS IS" BASIS,
  13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *  See the License for the specific language governing permissions and
  15  *  limitations under the License.
  16  *
  17  ******************************************************************************/
  18
  19 //#if (defined(BTA_HH_INCLUDED) && (BTA_HH_INCLUDED == TRUE))
  20
  21 #include <ctype.h>
  22 #include <fcntl.h>
  23 #include <sys/poll.h>
  24 #include <pthread.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdint.h>
  28 #include <errno.h>
  29 #include <linux/uhid.h>
  30 #include <unistd.h>
  31 #include "btif_hh.h"
  32 #include "bta_api.h"
  33 #include "bta_hh_api.h"
  34 #include "btif_util.h"
  35 #include "bta_hh_co.h"
  36
  37 const char *dev_path = "/dev/uhid";
  38
  39 #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE)
  40 #include "btif_config.h"
  41 #define BTA_HH_NV_LOAD_MAX       16
  42 static tBTA_HH_RPT_CACHE_ENTRY sReportCache[BTA_HH_NV_LOAD_MAX];
  43 #endif
  44
  45 /*Internal function to perform UHID write and error checking*/
  46 static int uhid_write(int fd, const struct uhid_event *ev)
  47 {
  48     ssize_t ret;
  49     ret = write(fd, ev, sizeof(*ev));
  50     if (ret < 0){
  51         int rtn = -errno;
  52         APPL_TRACE_ERROR("%s: Cannot write to uhid:%s", __FUNCTION__, strerror(errno));
  53         return rtn;
  54     } else if (ret != sizeof(*ev)) {
  55         APPL_TRACE_ERROR("%s: Wrong size written to uhid: %ld != %lu",
  56                                                     __FUNCTION__, ret, sizeof(*ev));
  57         return -EFAULT;
  58     } else {
  59         return 0;
  60     }
  61 }
  62
  63 /* Internal function to parse the events received from UHID driver*/
  64 static int uhid_event(btif_hh_device_t *p_dev)
  65 {
  66     struct uhid_event ev;
  67     ssize_t ret;
  68     memset(&ev, 0, sizeof(ev));
  69     if(!p_dev)
  70     {
  71         APPL_TRACE_ERROR("%s: Device not found",__FUNCTION__)
  72         return -1;
  73     }
  74     ret = read(p_dev->fd, &ev, sizeof(ev));
  75     if (ret == 0) {
  76         APPL_TRACE_ERROR("%s: Read HUP on uhid-cdev %s", __FUNCTION__,
  77                                                  strerror(errno));
  78         return -EFAULT;
  79     } else if (ret < 0) {
  80         APPL_TRACE_ERROR("%s:Cannot read uhid-cdev: %s", __FUNCTION__,
  81                                                 strerror(errno));
  82         return -errno;
  83     } else if (ret != sizeof(ev)) {
  84         APPL_TRACE_ERROR("%s:Invalid size read from uhid-dev: %ld != %lu",
  85                             __FUNCTION__, ret, sizeof(ev));
  86         return -EFAULT;
  87     }
  88
  89     switch (ev.type) {
  90     case UHID_START:
  91         APPL_TRACE_DEBUG("UHID_START from uhid-dev\n");
  92         break;
  93     case UHID_STOP:
  94         APPL_TRACE_DEBUG("UHID_STOP from uhid-dev\n");
  95         break;
  96     case UHID_OPEN:
  97         APPL_TRACE_DEBUG("UHID_OPEN from uhid-dev\n");
  98         break;
  99     case UHID_CLOSE:
 100         APPL_TRACE_DEBUG("UHID_CLOSE from uhid-dev\n");
 101         break;
 102     case UHID_OUTPUT:
 103         APPL_TRACE_DEBUG("UHID_OUTPUT: Report type = %d, report_size = %d"
 104                             ,ev.u.output.rtype, ev.u.output.size);
 105         //Send SET_REPORT with feature report if the report type in output event is FEATURE
 106         if(ev.u.output.rtype == UHID_FEATURE_REPORT)
 107             btif_hh_setreport(p_dev,BTHH_FEATURE_REPORT,ev.u.output.size,ev.u.output.data);
 108         else if(ev.u.output.rtype == UHID_OUTPUT_REPORT)
 109             btif_hh_setreport(p_dev,BTHH_OUTPUT_REPORT,ev.u.output.size,ev.u.output.data);
 110         else
 111             btif_hh_setreport(p_dev,BTHH_INPUT_REPORT,ev.u.output.size,ev.u.output.data);
 112            break;
 113     case UHID_OUTPUT_EV:
 114         APPL_TRACE_DEBUG("UHID_OUTPUT_EV from uhid-dev\n");
 115         break;
 116     case UHID_FEATURE:
 117         APPL_TRACE_DEBUG("UHID_FEATURE from uhid-dev\n");
 118         break;
 119     case UHID_FEATURE_ANSWER:
 120         APPL_TRACE_DEBUG("UHID_FEATURE_ANSWER from uhid-dev\n");
 121         break;
 122
 123     default:
 124         APPL_TRACE_DEBUG("Invalid event from uhid-dev: %u\n", ev.type);
 125     }
 126
 127     return 0;
 128 }
 129
 130 /*******************************************************************************
 131 **
 132 ** Function create_thread
 133 **
 134 ** Description creat a select loop
 135 **
 136 ** Returns pthread_t
 137 **
 138 *******************************************************************************/
 139 static inline pthread_t create_thread(void *(*start_routine)(void *), void * arg){
 140     APPL_TRACE_DEBUG("create_thread: entered");
 141     pthread_attr_t thread_attr;
 142
 143     pthread_attr_init(&thread_attr);
 144     pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
 145     pthread_t thread_id = -1;
 146     if ( pthread_create(&thread_id, &thread_attr, start_routine, arg)!=0 )
 147     {
 148         APPL_TRACE_ERROR("pthread_create : %s", strerror(errno));
 149         return -1;
 150     }
 151     APPL_TRACE_DEBUG("create_thread: thread created successfully");
 152     return thread_id;
 153 }
 154
 155 /*******************************************************************************
 156 **
 157 ** Function btif_hh_poll_event_thread
 158 **
 159 ** Description the polling thread which polls for event from UHID driver
 160 **
 161 ** Returns void
 162 **
 163 *******************************************************************************/
 164 static void *btif_hh_poll_event_thread(void *arg)
 165 {
 166
 167     btif_hh_device_t *p_dev = arg;
 168     APPL_TRACE_DEBUG("%s: Thread created fd = %d", __FUNCTION__, p_dev->fd);
 169     struct pollfd pfds[1];
 170     int ret;
 171     pfds[0].fd = p_dev->fd;
 172     pfds[0].events = POLLIN;
 173
 174     while(p_dev->hh_keep_polling){
 175         ret = poll(pfds, 1, 50);
 176         if (ret < 0) {
 177             APPL_TRACE_ERROR("%s: Cannot poll for fds: %s\n", __FUNCTION__, strerror(errno));
 178             break;
 179         }
 180         if (pfds[0].revents & POLLIN) {
 181             APPL_TRACE_DEBUG("btif_hh_poll_event_thread: POLLIN");
 182             ret = uhid_event(p_dev);
 183             if (ret){
 184                 break;
 185             }
 186         }
 187     }
 188
 189     p_dev->hh_poll_thread_id = -1;
 190     return 0;
 191 }
 192
 193 static inline void btif_hh_close_poll_thread(btif_hh_device_t *p_dev)
 194 {
 195     APPL_TRACE_DEBUG("%s", __FUNCTION__);
 196     p_dev->hh_keep_polling = 0;
 197     if(p_dev->hh_poll_thread_id > 0)
 198         pthread_join(p_dev->hh_poll_thread_id,NULL);
 199
 200     return;
 201 }
 202
 203 void bta_hh_co_destroy(int fd)
 204 {
 205     struct uhid_event ev;
 206     memset(&ev, 0, sizeof(ev));
 207     ev.type = UHID_DESTROY;
 208     uhid_write(fd, &ev);
 209     close(fd);
 210 }
 211
 212 int bta_hh_co_write(int fd, UINT8* rpt, UINT16 len)
 213 {
 214     APPL_TRACE_DEBUG("bta_hh_co_data: UHID write");
 215     struct uhid_event ev;
 216     memset(&ev, 0, sizeof(ev));
 217     ev.type = UHID_INPUT;
 218     ev.u.input.size = len;
 219     if(len > sizeof(ev.u.input.data)){
 220         APPL_TRACE_WARNING("%s:report size greater than allowed size",__FUNCTION__);
 221         return -1;
 222     }
 223     memcpy(ev.u.input.data, rpt, len);
 224     return uhid_write(fd, &ev);
 225
 226 }
 227
 228
 229 /*******************************************************************************
 230 **
 231 ** Function      bta_hh_co_open
 232 **
 233 ** Description   When connection is opened, this call-out function is executed
 234 **               by HH to do platform specific initialization.
 235 **
 236 ** Returns       void.
 237 *******************************************************************************/
 238 void bta_hh_co_open(UINT8 dev_handle, UINT8 sub_class, tBTA_HH_ATTR_MASK attr_mask,
 239                     UINT8 app_id)
 240 {
 241     UINT32 i;
 242     btif_hh_device_t *p_dev = NULL;
 243
 244     if (dev_handle == BTA_HH_INVALID_HANDLE) {
 245         APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __FUNCTION__, dev_handle);
 246         return;
 247     }
 248
 249     for (i = 0; i < BTIF_HH_MAX_HID; i++) {
 250         p_dev = &btif_hh_cb.devices[i];
 251         if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN && p_dev->dev_handle == dev_handle) {
 252             // We found a device with the same handle. Must be a device reconnected.
 253             APPL_TRACE_WARNING("%s: Found an existing device with the same handle "
 254                                                                 "dev_status = %d",__FUNCTION__,
 255                                                                 p_dev->dev_status);
 256             APPL_TRACE_WARNING("%s:     bd_addr = [%02X:%02X:%02X:%02X:%02X:]", __FUNCTION__,
 257                  p_dev->bd_addr.address[0], p_dev->bd_addr.address[1], p_dev->bd_addr.address[2],
 258                  p_dev->bd_addr.address[3], p_dev->bd_addr.address[4]);
 259                  APPL_TRACE_WARNING("%s:     attr_mask = 0x%04x, sub_class = 0x%02x, app_id = %d",
 260                                   __FUNCTION__, p_dev->attr_mask, p_dev->sub_class, p_dev->app_id);
 261
 262             if(p_dev->fd<0) {
 263                 p_dev->fd = open(dev_path, O_RDWR | O_CLOEXEC);
 264                 if (p_dev->fd < 0){
 265                     APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s",
 266                                                                     __FUNCTION__,strerror(errno));
 267                 }else
 268                     APPL_TRACE_DEBUG("%s: uhid fd = %d", __FUNCTION__, p_dev->fd);
 269             }
 270             p_dev->hh_keep_polling = 1;
 271             p_dev->hh_poll_thread_id = create_thread(btif_hh_poll_event_thread, p_dev);
 272             break;
 273         }
 274         p_dev = NULL;
 275     }
 276
 277     if (p_dev == NULL) {
 278         // Did not find a device reconnection case. Find an empty slot now.
 279         for (i = 0; i < BTIF_HH_MAX_HID; i++) {
 280             if (btif_hh_cb.devices[i].dev_status == BTHH_CONN_STATE_UNKNOWN) {
 281                 p_dev = &btif_hh_cb.devices[i];
 282                 p_dev->dev_handle = dev_handle;
 283                 p_dev->attr_mask  = attr_mask;
 284                 p_dev->sub_class  = sub_class;
 285                 p_dev->app_id     = app_id;
 286                 p_dev->local_vup  = FALSE;
 287
 288                 btif_hh_cb.device_num++;
 289                 // This is a new device,open the uhid driver now.
 290                 p_dev->fd = open(dev_path, O_RDWR | O_CLOEXEC);
 291                 if (p_dev->fd < 0){
 292                     APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s",
 293                                                                     __FUNCTION__,strerror(errno));
 294                 }else{
 295                     APPL_TRACE_DEBUG("%s: uhid fd = %d", __FUNCTION__, p_dev->fd);
 296                     p_dev->hh_keep_polling = 1;
 297                     p_dev->hh_poll_thread_id = create_thread(btif_hh_poll_event_thread, p_dev);
 298                 }
 299
 300
 301                 break;
 302             }
 303         }
 304     }
 305
 306     if (p_dev == NULL) {
 307         APPL_TRACE_ERROR("%s: Error: too many HID devices are connected", __FUNCTION__);
 308         return;
 309     }
 310
 311     p_dev->dev_status = BTHH_CONN_STATE_CONNECTED;
 312     APPL_TRACE_DEBUG("%s: Return device status %d", __FUNCTION__, p_dev->dev_status);
 313 }
 314
 315
 316 /*******************************************************************************
 317 **
 318 ** Function      bta_hh_co_close
 319 **
 320 ** Description   When connection is closed, this call-out function is executed
 321 **               by HH to do platform specific finalization.
 322 **
 323 ** Parameters    dev_handle  - device handle
 324 **                  app_id      - application id
 325 **
 326 ** Returns          void.
 327 *******************************************************************************/
 328 void bta_hh_co_close(UINT8 dev_handle, UINT8 app_id)
 329 {
 330     UINT32 i;
 331     btif_hh_device_t *p_dev = NULL;
 332
 333     APPL_TRACE_WARNING("%s: dev_handle = %d, app_id = %d", __FUNCTION__, dev_handle, app_id);
 334     if (dev_handle == BTA_HH_INVALID_HANDLE) {
 335         APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __FUNCTION__, dev_handle);
 336         return;
 337     }
 338
 339     for (i = 0; i < BTIF_HH_MAX_HID; i++) {
 340         p_dev = &btif_hh_cb.devices[i];
 341         if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN && p_dev->dev_handle == dev_handle) {
 342             APPL_TRACE_WARNING("%s: Found an existing device with the same handle "
 343                                                         "dev_status = %d, dev_handle =%d"
 344                                                         ,__FUNCTION__,p_dev->dev_status
 345                                                         ,p_dev->dev_handle);
 346             btif_hh_close_poll_thread(p_dev);
 347             break;
 348         }
 349      }
 350 }
 351
 352
 353 /*******************************************************************************
 354 **
 355 ** Function         bta_hh_co_data
 356 **
 357 ** Description      This function is executed by BTA when HID host receive a data
 358 **                  report.
 359 **
 360 ** Parameters       dev_handle  - device handle
 361 **                  *p_rpt      - pointer to the report data
 362 **                  len         - length of report data
 363 **                  mode        - Hid host Protocol Mode
 364 **                  sub_clas    - Device Subclass
 365 **                  app_id      - application id
 366 **
 367 ** Returns          void
 368 *******************************************************************************/
 369 void bta_hh_co_data(UINT8 dev_handle, UINT8 *p_rpt, UINT16 len, tBTA_HH_PROTO_MODE mode,
 370                     UINT8 sub_class, UINT8 ctry_code, BD_ADDR peer_addr, UINT8 app_id)
 371 {
 372     btif_hh_device_t *p_dev;
 373     UNUSED(peer_addr);
 374
 375     APPL_TRACE_DEBUG("%s: dev_handle = %d, subclass = 0x%02X, mode = %d, "
 376          "ctry_code = %d, app_id = %d",
 377          __FUNCTION__, dev_handle, sub_class, mode, ctry_code, app_id);
 378
 379     p_dev = btif_hh_find_connected_dev_by_handle(dev_handle);
 380     if (p_dev == NULL) {
 381         APPL_TRACE_WARNING("%s: Error: unknown HID device handle %d", __FUNCTION__, dev_handle);
 382         return;
 383     }
 384     // Send the HID report to the kernel.
 385     if (p_dev->fd >= 0) {
 386         bta_hh_co_write(p_dev->fd, p_rpt, len);
 387     }else {
 388         APPL_TRACE_WARNING("%s: Error: fd = %d, len = %d", __FUNCTION__, p_dev->fd, len);
 389     }
 390 }
 391
 392
 393 /*******************************************************************************
 394 **
 395 ** Function         bta_hh_co_send_hid_info
 396 **
 397 ** Description      This function is called in btif_hh.c to process DSCP received.
 398 **
 399 ** Parameters       dev_handle  - device handle
 400 **                  dscp_len    - report descriptor length
 401 **                  *p_dscp     - report descriptor
 402 **
 403 ** Returns          void
 404 *******************************************************************************/
 405 void bta_hh_co_send_hid_info(btif_hh_device_t *p_dev, char *dev_name, UINT16 vendor_id,
 406                              UINT16 product_id, UINT16 version, UINT8 ctry_code,
 407                              int dscp_len, UINT8 *p_dscp)
 408 {
 409     int result;
 410     struct uhid_event ev;
 411
 412     if (p_dev->fd < 0) {
 413         APPL_TRACE_WARNING("%s: Error: fd = %d, dscp_len = %d", __FUNCTION__, p_dev->fd, dscp_len);
 414         return;
 415     }
 416
 417     APPL_TRACE_WARNING("%s: fd = %d, name = [%s], dscp_len = %d", __FUNCTION__,
 418                                                                     p_dev->fd, dev_name, dscp_len);
 419     APPL_TRACE_WARNING("%s: vendor_id = 0x%04x, product_id = 0x%04x, version= 0x%04x,"
 420                                                                     "ctry_code=0x%02x",__FUNCTION__,
 421                                                                     vendor_id, product_id,
 422                                                                     version, ctry_code);
 423
 424 //Create and send hid descriptor to kernel
 425     memset(&ev, 0, sizeof(ev));
 426     ev.type = UHID_CREATE;
 427     strncpy((char*)ev.u.create.name, dev_name, sizeof(ev.u.create.name) - 1);
 428     snprintf((char*)ev.u.create.uniq, sizeof(ev.u.create.uniq),
 429              "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
 430              p_dev->bd_addr.address[5], p_dev->bd_addr.address[4],
 431              p_dev->bd_addr.address[3], p_dev->bd_addr.address[2],
 432              p_dev->bd_addr.address[1], p_dev->bd_addr.address[0]);
 433     ev.u.create.rd_size = dscp_len;
 434     ev.u.create.rd_data = p_dscp;
 435     ev.u.create.bus = BUS_BLUETOOTH;
 436     ev.u.create.vendor = vendor_id;
 437     ev.u.create.product = product_id;
 438     ev.u.create.version = version;
 439     ev.u.create.country = ctry_code;
 440     result = uhid_write(p_dev->fd, &ev);
 441
 442     APPL_TRACE_WARNING("%s: fd = %d, dscp_len = %d, result = %d", __FUNCTION__,
 443                                                                     p_dev->fd, dscp_len, result);
 444
 445     if (result) {
 446         APPL_TRACE_WARNING("%s: Error: failed to send DSCP, result = %d", __FUNCTION__, result);
 447
 448         /* The HID report descriptor is corrupted. Close the driver. */
 449         close(p_dev->fd);
 450         p_dev->fd = -1;
 451     }
 452 }
 453
 454 #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE)
 455 /*******************************************************************************
 456 **
 457 ** Function         bta_hh_le_co_rpt_info
 458 **
 459 ** Description      This callout function is to convey the report information on
 460 **                  a HOGP device to the application. Application can save this
 461 **                  information in NV if device is bonded and load it back when
 462 **                  stack reboot.
 463 **
 464 ** Parameters       remote_bda  - remote device address
 465 **                  p_entry     - report entry pointer
 466 **                  app_id      - application id
 467 **
 468 ** Returns          void.
 469 **
 470 *******************************************************************************/
 471 void bta_hh_le_co_rpt_info(BD_ADDR remote_bda, tBTA_HH_RPT_CACHE_ENTRY *p_entry, UINT8 app_id)
 472 {
 473     UNUSED(app_id);
 474
 475     unsigned idx = 0;
 476
 477     bdstr_t bdstr;
 478     sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x",
 479         remote_bda[0], remote_bda[1], remote_bda[2],
 480         remote_bda[3], remote_bda[4], remote_bda[5]);
 481
 482     size_t len = btif_config_get_bin_length(bdstr, "HidReport");
 483     if (len >= sizeof(tBTA_HH_RPT_CACHE_ENTRY) && len <= sizeof(sReportCache))
 484     {
 485         btif_config_get_bin(bdstr, "HidReport", (uint8_t *)sReportCache, &len);
 486         idx = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY);
 487     }
 488
 489     if (idx < BTA_HH_NV_LOAD_MAX)
 490     {
 491         memcpy(&sReportCache[idx++], p_entry, sizeof(tBTA_HH_RPT_CACHE_ENTRY));
 492         btif_config_set_bin(bdstr, "HidReport", (const uint8_t *)sReportCache,
 493             idx * sizeof(tBTA_HH_RPT_CACHE_ENTRY));
 494         BTIF_TRACE_DEBUG("%s() - Saving report; dev=%s, idx=%d", __FUNCTION__, bdstr, idx);
 495     }
 496 }
 497
 498
 499 /*******************************************************************************
 500 **
 501 ** Function         bta_hh_le_co_cache_load
 502 **
 503 ** Description      This callout function is to request the application to load the
 504 **                  cached HOGP report if there is any. When cache reading is completed,
 505 **                  bta_hh_le_ci_cache_load() is called by the application.
 506 **
 507 ** Parameters       remote_bda  - remote device address
 508 **                  p_num_rpt: number of cached report
 509 **                  app_id      - application id
 510 **
 511 ** Returns          the acched report array
 512 **
 513 *******************************************************************************/
 514 tBTA_HH_RPT_CACHE_ENTRY * bta_hh_le_co_cache_load (BD_ADDR remote_bda,
 515                                                    UINT8 *p_num_rpt, UINT8 app_id)
 516 {
 517     UNUSED(app_id);
 518
 519     unsigned idx = 0;
 520
 521     bdstr_t bdstr;
 522     sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x",
 523         remote_bda[0], remote_bda[1], remote_bda[2],
 524         remote_bda[3], remote_bda[4], remote_bda[5]);
 525
 526     size_t len = btif_config_get_bin_length(bdstr, "HidReport");
 527     if (!p_num_rpt && len < sizeof(tBTA_HH_RPT_CACHE_ENTRY))
 528         return NULL;
 529
 530     if (len > sizeof(sReportCache))
 531         len = sizeof(sReportCache);
 532     btif_config_get_bin(bdstr, "HidReport", (uint8_t *)sReportCache, &len);
 533     *p_num_rpt = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY);
 534
 535     BTIF_TRACE_DEBUG("%s() - Loaded %d reports; dev=%s", __FUNCTION__, *p_num_rpt, bdstr);
 536
 537     return sReportCache;
 538 }
 539
 540 /*******************************************************************************
 541 **
 542 ** Function         bta_hh_le_co_reset_rpt_cache
 543 **
 544 ** Description      This callout function is to reset the HOGP device cache.
 545 **
 546 ** Parameters       remote_bda  - remote device address
 547 **
 548 ** Returns          none
 549 **
 550 *******************************************************************************/
 551 void bta_hh_le_co_reset_rpt_cache (BD_ADDR remote_bda, UINT8 app_id)
 552 {
 553     UNUSED(app_id);
 554
 555     bdstr_t bdstr;
 556     sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x",
 557         remote_bda[0], remote_bda[1], remote_bda[2],
 558         remote_bda[3], remote_bda[4], remote_bda[5]);
 559     btif_config_remove(bdstr, "HidReport");
 560
 561     BTIF_TRACE_DEBUG("%s() - Reset cache for bda %s", __FUNCTION__, bdstr);
 562 }
 563 #endif /* #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE) */
 564