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 <unistd.h>
30 #include <linux/uhid.h>
31 #include <unistd.h>
32 #include "btif_hh.h"
33 #include "bta_api.h"
34 #include "bta_hh_api.h"
35 #include "btif_util.h"
36 #include "bta_hh_co.h"
37
38 const char *dev_path = "/dev/uhid";
39
40 #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE)
41 #include "btif_config.h"
42 #define BTA_HH_NV_LOAD_MAX 16
43 static tBTA_HH_RPT_CACHE_ENTRY sReportCache[BTA_HH_NV_LOAD_MAX];
44 #endif
45
uhid_set_non_blocking(int fd)46 void uhid_set_non_blocking(int fd)
47 {
48 int opts = fcntl(fd, F_GETFL);
49 if (opts < 0)
50 APPL_TRACE_ERROR("%s() Getting flags failed (%s)", __func__, strerror(errno));
51
52 opts |= O_NONBLOCK;
53
54 if (fcntl(fd, F_SETFL, opts) < 0)
55 APPL_TRACE_EVENT("%s() Setting non-blocking flag failed (%s)", __func__, strerror(errno));
56 }
57
58 /*Internal function to perform UHID write and error checking*/
uhid_write(int fd,const struct uhid_event * ev)59 static int uhid_write(int fd, const struct uhid_event *ev)
60 {
61 ssize_t ret = TEMP_FAILURE_RETRY(write(fd, ev, sizeof(*ev)));
62 if (ret < 0){
63 int rtn = -errno;
64 APPL_TRACE_ERROR("%s: Cannot write to uhid:%s",
65 __FUNCTION__, strerror(errno));
66 return rtn;
67 } else if (ret != (ssize_t)sizeof(*ev)) {
68 APPL_TRACE_ERROR("%s: Wrong size written to uhid: %zd != %zu",
69 __FUNCTION__, ret, sizeof(*ev));
70 return -EFAULT;
71 }
72
73 return 0;
74 }
75
76 /* Internal function to parse the events received from UHID driver*/
uhid_event(btif_hh_device_t * p_dev)77 static int uhid_event(btif_hh_device_t *p_dev)
78 {
79 struct uhid_event ev;
80 ssize_t ret;
81 memset(&ev, 0, sizeof(ev));
82 if(!p_dev)
83 {
84 APPL_TRACE_ERROR("%s: Device not found",__FUNCTION__)
85 return -1;
86 }
87 ret = TEMP_FAILURE_RETRY(read(p_dev->fd, &ev, sizeof(ev)));
88 if (ret == 0) {
89 APPL_TRACE_ERROR("%s: Read HUP on uhid-cdev %s", __FUNCTION__,
90 strerror(errno));
91 return -EFAULT;
92 } else if (ret < 0) {
93 APPL_TRACE_ERROR("%s: Cannot read uhid-cdev: %s", __FUNCTION__,
94 strerror(errno));
95 return -errno;
96 } else if ((ev.type == UHID_OUTPUT) || (ev.type==UHID_OUTPUT_EV)) {
97 // Only these two types havae payload,
98 // ensure we read full event descriptor
99 if (ret < (ssize_t)sizeof(ev)) {
100 APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %ld != %lu",
101 __FUNCTION__, ret, sizeof(ev.type));
102 return -EFAULT;
103 }
104 }
105
106 switch (ev.type) {
107 case UHID_START:
108 APPL_TRACE_DEBUG("UHID_START from uhid-dev\n");
109 p_dev->ready_for_data = TRUE;
110 break;
111 case UHID_STOP:
112 APPL_TRACE_DEBUG("UHID_STOP from uhid-dev\n");
113 p_dev->ready_for_data = FALSE;
114 break;
115 case UHID_OPEN:
116 APPL_TRACE_DEBUG("UHID_OPEN from uhid-dev\n");
117 break;
118 case UHID_CLOSE:
119 APPL_TRACE_DEBUG("UHID_CLOSE from uhid-dev\n");
120 p_dev->ready_for_data = FALSE;
121 break;
122 case UHID_OUTPUT:
123 if (ret < (ssize_t)(sizeof(ev.type) + sizeof(ev.u.output))) {
124 APPL_TRACE_ERROR("%s: Invalid size read from uhid-dev: %zd < %zu",
125 __FUNCTION__, ret,
126 sizeof(ev.type) + sizeof(ev.u.output));
127 return -EFAULT;
128 }
129
130 APPL_TRACE_DEBUG("UHID_OUTPUT: Report type = %d, report_size = %d"
131 ,ev.u.output.rtype, ev.u.output.size);
132 //Send SET_REPORT with feature report if the report type in output event is FEATURE
133 if(ev.u.output.rtype == UHID_FEATURE_REPORT)
134 btif_hh_setreport(p_dev, BTHH_FEATURE_REPORT,
135 ev.u.output.size, ev.u.output.data);
136 else if(ev.u.output.rtype == UHID_OUTPUT_REPORT)
137 btif_hh_setreport(p_dev, BTHH_OUTPUT_REPORT,
138 ev.u.output.size, ev.u.output.data);
139 else
140 btif_hh_setreport(p_dev, BTHH_INPUT_REPORT,
141 ev.u.output.size, ev.u.output.data);
142 break;
143 case UHID_OUTPUT_EV:
144 APPL_TRACE_DEBUG("UHID_OUTPUT_EV from uhid-dev\n");
145 break;
146 case UHID_FEATURE:
147 APPL_TRACE_DEBUG("UHID_FEATURE from uhid-dev\n");
148 break;
149 case UHID_FEATURE_ANSWER:
150 APPL_TRACE_DEBUG("UHID_FEATURE_ANSWER from uhid-dev\n");
151 break;
152
153 default:
154 APPL_TRACE_DEBUG("Invalid event from uhid-dev: %u\n", ev.type);
155 }
156
157 return 0;
158 }
159
160 /*******************************************************************************
161 **
162 ** Function create_thread
163 **
164 ** Description creat a select loop
165 **
166 ** Returns pthread_t
167 **
168 *******************************************************************************/
create_thread(void * (* start_routine)(void *),void * arg)169 static inline pthread_t create_thread(void *(*start_routine)(void *), void * arg){
170 APPL_TRACE_DEBUG("create_thread: entered");
171 pthread_attr_t thread_attr;
172
173 pthread_attr_init(&thread_attr);
174 pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
175 pthread_t thread_id = -1;
176 if ( pthread_create(&thread_id, &thread_attr, start_routine, arg)!=0 )
177 {
178 APPL_TRACE_ERROR("pthread_create : %s", strerror(errno));
179 return -1;
180 }
181 APPL_TRACE_DEBUG("create_thread: thread created successfully");
182 return thread_id;
183 }
184
185 /*******************************************************************************
186 **
187 ** Function btif_hh_poll_event_thread
188 **
189 ** Description the polling thread which polls for event from UHID driver
190 **
191 ** Returns void
192 **
193 *******************************************************************************/
btif_hh_poll_event_thread(void * arg)194 static void *btif_hh_poll_event_thread(void *arg)
195 {
196 btif_hh_device_t *p_dev = arg;
197 APPL_TRACE_DEBUG("%s: Thread created fd = %d", __FUNCTION__, p_dev->fd);
198 struct pollfd pfds[1];
199 int ret;
200
201 pfds[0].fd = p_dev->fd;
202 pfds[0].events = POLLIN;
203
204 // Set the uhid fd as non-blocking to ensure we never block the BTU thread
205 uhid_set_non_blocking(p_dev->fd);
206
207 while(p_dev->hh_keep_polling){
208 ret = TEMP_FAILURE_RETRY(poll(pfds, 1, 50));
209 if (ret < 0) {
210 APPL_TRACE_ERROR("%s: Cannot poll for fds: %s\n", __FUNCTION__, strerror(errno));
211 break;
212 }
213 if (pfds[0].revents & POLLIN) {
214 APPL_TRACE_DEBUG("btif_hh_poll_event_thread: POLLIN");
215 ret = uhid_event(p_dev);
216 if (ret){
217 break;
218 }
219 }
220 }
221
222 p_dev->hh_poll_thread_id = -1;
223 return 0;
224 }
225
btif_hh_close_poll_thread(btif_hh_device_t * p_dev)226 static inline void btif_hh_close_poll_thread(btif_hh_device_t *p_dev)
227 {
228 APPL_TRACE_DEBUG("%s", __FUNCTION__);
229 p_dev->hh_keep_polling = 0;
230 if(p_dev->hh_poll_thread_id > 0)
231 pthread_join(p_dev->hh_poll_thread_id,NULL);
232
233 return;
234 }
235
bta_hh_co_destroy(int fd)236 void bta_hh_co_destroy(int fd)
237 {
238 struct uhid_event ev;
239 memset(&ev, 0, sizeof(ev));
240 ev.type = UHID_DESTROY;
241 uhid_write(fd, &ev);
242 APPL_TRACE_DEBUG("%s: Closing fd=%d", __func__, fd);
243 close(fd);
244 }
245
bta_hh_co_write(int fd,UINT8 * rpt,UINT16 len)246 int bta_hh_co_write(int fd, UINT8* rpt, UINT16 len)
247 {
248 APPL_TRACE_DEBUG("%s: UHID write %d", __func__, len);
249
250 struct uhid_event ev;
251 memset(&ev, 0, sizeof(ev));
252 ev.type = UHID_INPUT;
253 ev.u.input.size = len;
254 if(len > sizeof(ev.u.input.data)){
255 APPL_TRACE_WARNING("%s: Report size greater than allowed size",
256 __FUNCTION__);
257 return -1;
258 }
259 memcpy(ev.u.input.data, rpt, len);
260
261 return uhid_write(fd, &ev);
262
263 }
264
265
266 /*******************************************************************************
267 **
268 ** Function bta_hh_co_open
269 **
270 ** Description When connection is opened, this call-out function is executed
271 ** by HH to do platform specific initialization.
272 **
273 ** Returns void.
274 *******************************************************************************/
bta_hh_co_open(UINT8 dev_handle,UINT8 sub_class,tBTA_HH_ATTR_MASK attr_mask,UINT8 app_id)275 void bta_hh_co_open(UINT8 dev_handle, UINT8 sub_class, tBTA_HH_ATTR_MASK attr_mask,
276 UINT8 app_id)
277 {
278 UINT32 i;
279 btif_hh_device_t *p_dev = NULL;
280
281 if (dev_handle == BTA_HH_INVALID_HANDLE) {
282 APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...",
283 __FUNCTION__, dev_handle);
284 return;
285 }
286
287 for (i = 0; i < BTIF_HH_MAX_HID; i++) {
288 p_dev = &btif_hh_cb.devices[i];
289 if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN &&
290 p_dev->dev_handle == dev_handle) {
291 // We found a device with the same handle. Must be a device reconnected.
292 APPL_TRACE_WARNING("%s: Found an existing device with the same handle "
293 "dev_status = %d",__FUNCTION__,
294 p_dev->dev_status);
295 APPL_TRACE_WARNING("%s: bd_addr = [%02X:%02X:%02X:%02X:%02X:]", __FUNCTION__,
296 p_dev->bd_addr.address[0], p_dev->bd_addr.address[1], p_dev->bd_addr.address[2],
297 p_dev->bd_addr.address[3], p_dev->bd_addr.address[4]);
298 APPL_TRACE_WARNING("%s: attr_mask = 0x%04x, sub_class = 0x%02x, app_id = %d",
299 __FUNCTION__, p_dev->attr_mask, p_dev->sub_class, p_dev->app_id);
300
301 if(p_dev->fd<0) {
302 p_dev->fd = TEMP_FAILURE_RETRY(open(dev_path, O_RDWR | O_CLOEXEC));
303 if (p_dev->fd < 0){
304 APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s",
305 __FUNCTION__,strerror(errno));
306 return;
307 }else
308 APPL_TRACE_DEBUG("%s: uhid fd = %d", __FUNCTION__, p_dev->fd);
309 }
310
311 p_dev->hh_keep_polling = 1;
312 p_dev->hh_poll_thread_id = create_thread(btif_hh_poll_event_thread, p_dev);
313 break;
314 }
315 p_dev = NULL;
316 }
317
318 if (p_dev == NULL) {
319 // Did not find a device reconnection case. Find an empty slot now.
320 for (i = 0; i < BTIF_HH_MAX_HID; i++) {
321 if (btif_hh_cb.devices[i].dev_status == BTHH_CONN_STATE_UNKNOWN) {
322 p_dev = &btif_hh_cb.devices[i];
323 p_dev->dev_handle = dev_handle;
324 p_dev->attr_mask = attr_mask;
325 p_dev->sub_class = sub_class;
326 p_dev->app_id = app_id;
327 p_dev->local_vup = FALSE;
328
329 btif_hh_cb.device_num++;
330 // This is a new device,open the uhid driver now.
331 p_dev->fd = TEMP_FAILURE_RETRY(open(dev_path, O_RDWR | O_CLOEXEC));
332 if (p_dev->fd < 0){
333 APPL_TRACE_ERROR("%s: Error: failed to open uhid, err:%s",
334 __FUNCTION__,strerror(errno));
335 return;
336 }else{
337 APPL_TRACE_DEBUG("%s: uhid fd = %d", __FUNCTION__, p_dev->fd);
338 p_dev->hh_keep_polling = 1;
339 p_dev->hh_poll_thread_id = create_thread(btif_hh_poll_event_thread, p_dev);
340 }
341
342
343 break;
344 }
345 }
346 }
347
348 if (p_dev == NULL) {
349 APPL_TRACE_ERROR("%s: Error: too many HID devices are connected", __FUNCTION__);
350 return;
351 }
352
353 p_dev->dev_status = BTHH_CONN_STATE_CONNECTED;
354 APPL_TRACE_DEBUG("%s: Return device status %d", __FUNCTION__, p_dev->dev_status);
355 }
356
357
358 /*******************************************************************************
359 **
360 ** Function bta_hh_co_close
361 **
362 ** Description When connection is closed, this call-out function is executed
363 ** by HH to do platform specific finalization.
364 **
365 ** Parameters dev_handle - device handle
366 ** app_id - application id
367 **
368 ** Returns void.
369 *******************************************************************************/
bta_hh_co_close(UINT8 dev_handle,UINT8 app_id)370 void bta_hh_co_close(UINT8 dev_handle, UINT8 app_id)
371 {
372 UINT32 i;
373 btif_hh_device_t *p_dev = NULL;
374
375 APPL_TRACE_WARNING("%s: dev_handle = %d, app_id = %d", __FUNCTION__, dev_handle, app_id);
376 if (dev_handle == BTA_HH_INVALID_HANDLE) {
377 APPL_TRACE_WARNING("%s: Oops, dev_handle (%d) is invalid...", __FUNCTION__, dev_handle);
378 return;
379 }
380
381 for (i = 0; i < BTIF_HH_MAX_HID; i++) {
382 p_dev = &btif_hh_cb.devices[i];
383 if (p_dev->dev_status != BTHH_CONN_STATE_UNKNOWN && p_dev->dev_handle == dev_handle) {
384 APPL_TRACE_WARNING("%s: Found an existing device with the same handle "
385 "dev_status = %d, dev_handle =%d"
386 ,__FUNCTION__,p_dev->dev_status
387 ,p_dev->dev_handle);
388 btif_hh_close_poll_thread(p_dev);
389 break;
390 }
391 }
392 }
393
394
395 /*******************************************************************************
396 **
397 ** Function bta_hh_co_data
398 **
399 ** Description This function is executed by BTA when HID host receive a data
400 ** report.
401 **
402 ** Parameters dev_handle - device handle
403 ** *p_rpt - pointer to the report data
404 ** len - length of report data
405 ** mode - Hid host Protocol Mode
406 ** sub_clas - Device Subclass
407 ** app_id - application id
408 **
409 ** Returns void
410 *******************************************************************************/
bta_hh_co_data(UINT8 dev_handle,UINT8 * p_rpt,UINT16 len,tBTA_HH_PROTO_MODE mode,UINT8 sub_class,UINT8 ctry_code,BD_ADDR peer_addr,UINT8 app_id)411 void bta_hh_co_data(UINT8 dev_handle, UINT8 *p_rpt, UINT16 len, tBTA_HH_PROTO_MODE mode,
412 UINT8 sub_class, UINT8 ctry_code, BD_ADDR peer_addr, UINT8 app_id)
413 {
414 btif_hh_device_t *p_dev;
415 UNUSED(peer_addr);
416
417 APPL_TRACE_DEBUG("%s: dev_handle = %d, subclass = 0x%02X, mode = %d, "
418 "ctry_code = %d, app_id = %d",
419 __FUNCTION__, dev_handle, sub_class, mode, ctry_code, app_id);
420
421 p_dev = btif_hh_find_connected_dev_by_handle(dev_handle);
422 if (p_dev == NULL) {
423 APPL_TRACE_WARNING("%s: Error: unknown HID device handle %d", __FUNCTION__, dev_handle);
424 return;
425 }
426
427 // Send the HID data to the kernel.
428 if ((p_dev->fd >= 0) && p_dev->ready_for_data) {
429 bta_hh_co_write(p_dev->fd, p_rpt, len);
430 }else {
431 APPL_TRACE_WARNING("%s: Error: fd = %d, ready %d, len = %d", __FUNCTION__, p_dev->fd,
432 p_dev->ready_for_data, len);
433 }
434 }
435
436
437 /*******************************************************************************
438 **
439 ** Function bta_hh_co_send_hid_info
440 **
441 ** Description This function is called in btif_hh.c to process DSCP received.
442 **
443 ** Parameters dev_handle - device handle
444 ** dscp_len - report descriptor length
445 ** *p_dscp - report descriptor
446 **
447 ** Returns void
448 *******************************************************************************/
bta_hh_co_send_hid_info(btif_hh_device_t * p_dev,char * dev_name,UINT16 vendor_id,UINT16 product_id,UINT16 version,UINT8 ctry_code,int dscp_len,UINT8 * p_dscp)449 void bta_hh_co_send_hid_info(btif_hh_device_t *p_dev, char *dev_name, UINT16 vendor_id,
450 UINT16 product_id, UINT16 version, UINT8 ctry_code,
451 int dscp_len, UINT8 *p_dscp)
452 {
453 int result;
454 struct uhid_event ev;
455
456 if (p_dev->fd < 0) {
457 APPL_TRACE_WARNING("%s: Error: fd = %d, dscp_len = %d", __FUNCTION__, p_dev->fd, dscp_len);
458 return;
459 }
460
461 APPL_TRACE_WARNING("%s: fd = %d, name = [%s], dscp_len = %d", __FUNCTION__,
462 p_dev->fd, dev_name, dscp_len);
463 APPL_TRACE_WARNING("%s: vendor_id = 0x%04x, product_id = 0x%04x, version= 0x%04x,"
464 "ctry_code=0x%02x",__FUNCTION__,
465 vendor_id, product_id,
466 version, ctry_code);
467
468 //Create and send hid descriptor to kernel
469 memset(&ev, 0, sizeof(ev));
470 ev.type = UHID_CREATE;
471 strncpy((char*)ev.u.create.name, dev_name, sizeof(ev.u.create.name) - 1);
472 snprintf((char*)ev.u.create.uniq, sizeof(ev.u.create.uniq),
473 "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
474 p_dev->bd_addr.address[5], p_dev->bd_addr.address[4],
475 p_dev->bd_addr.address[3], p_dev->bd_addr.address[2],
476 p_dev->bd_addr.address[1], p_dev->bd_addr.address[0]);
477 ev.u.create.rd_size = dscp_len;
478 ev.u.create.rd_data = p_dscp;
479 ev.u.create.bus = BUS_BLUETOOTH;
480 ev.u.create.vendor = vendor_id;
481 ev.u.create.product = product_id;
482 ev.u.create.version = version;
483 ev.u.create.country = ctry_code;
484 result = uhid_write(p_dev->fd, &ev);
485
486 APPL_TRACE_WARNING("%s: wrote descriptor to fd = %d, dscp_len = %d, result = %d", __FUNCTION__,
487 p_dev->fd, dscp_len, result);
488
489 if (result) {
490 APPL_TRACE_WARNING("%s: Error: failed to send DSCP, result = %d", __FUNCTION__, result);
491
492 /* The HID report descriptor is corrupted. Close the driver. */
493 close(p_dev->fd);
494 p_dev->fd = -1;
495 }
496 }
497
498 #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE)
499 /*******************************************************************************
500 **
501 ** Function bta_hh_le_co_rpt_info
502 **
503 ** Description This callout function is to convey the report information on
504 ** a HOGP device to the application. Application can save this
505 ** information in NV if device is bonded and load it back when
506 ** stack reboot.
507 **
508 ** Parameters remote_bda - remote device address
509 ** p_entry - report entry pointer
510 ** app_id - application id
511 **
512 ** Returns void.
513 **
514 *******************************************************************************/
bta_hh_le_co_rpt_info(BD_ADDR remote_bda,tBTA_HH_RPT_CACHE_ENTRY * p_entry,UINT8 app_id)515 void bta_hh_le_co_rpt_info(BD_ADDR remote_bda, tBTA_HH_RPT_CACHE_ENTRY *p_entry, 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 (len >= sizeof(tBTA_HH_RPT_CACHE_ENTRY) && len <= sizeof(sReportCache))
528 {
529 btif_config_get_bin(bdstr, "HidReport", (uint8_t *)sReportCache, &len);
530 idx = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY);
531 }
532
533 if (idx < BTA_HH_NV_LOAD_MAX)
534 {
535 memcpy(&sReportCache[idx++], p_entry, sizeof(tBTA_HH_RPT_CACHE_ENTRY));
536 btif_config_set_bin(bdstr, "HidReport", (const uint8_t *)sReportCache,
537 idx * sizeof(tBTA_HH_RPT_CACHE_ENTRY));
538 BTIF_TRACE_DEBUG("%s() - Saving report; dev=%s, idx=%d", __FUNCTION__, bdstr, idx);
539 }
540 }
541
542
543 /*******************************************************************************
544 **
545 ** Function bta_hh_le_co_cache_load
546 **
547 ** Description This callout function is to request the application to load the
548 ** cached HOGP report if there is any. When cache reading is completed,
549 ** bta_hh_le_ci_cache_load() is called by the application.
550 **
551 ** Parameters remote_bda - remote device address
552 ** p_num_rpt: number of cached report
553 ** app_id - application id
554 **
555 ** Returns the acched report array
556 **
557 *******************************************************************************/
bta_hh_le_co_cache_load(BD_ADDR remote_bda,UINT8 * p_num_rpt,UINT8 app_id)558 tBTA_HH_RPT_CACHE_ENTRY * bta_hh_le_co_cache_load (BD_ADDR remote_bda,
559 UINT8 *p_num_rpt, UINT8 app_id)
560 {
561 UNUSED(app_id);
562
563 unsigned idx = 0;
564
565 bdstr_t bdstr;
566 sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x",
567 remote_bda[0], remote_bda[1], remote_bda[2],
568 remote_bda[3], remote_bda[4], remote_bda[5]);
569
570 size_t len = btif_config_get_bin_length(bdstr, "HidReport");
571 if (!p_num_rpt && len < sizeof(tBTA_HH_RPT_CACHE_ENTRY))
572 return NULL;
573
574 if (len > sizeof(sReportCache))
575 len = sizeof(sReportCache);
576 btif_config_get_bin(bdstr, "HidReport", (uint8_t *)sReportCache, &len);
577 *p_num_rpt = len / sizeof(tBTA_HH_RPT_CACHE_ENTRY);
578
579 BTIF_TRACE_DEBUG("%s() - Loaded %d reports; dev=%s", __FUNCTION__, *p_num_rpt, bdstr);
580
581 return sReportCache;
582 }
583
584 /*******************************************************************************
585 **
586 ** Function bta_hh_le_co_reset_rpt_cache
587 **
588 ** Description This callout function is to reset the HOGP device cache.
589 **
590 ** Parameters remote_bda - remote device address
591 **
592 ** Returns none
593 **
594 *******************************************************************************/
bta_hh_le_co_reset_rpt_cache(BD_ADDR remote_bda,UINT8 app_id)595 void bta_hh_le_co_reset_rpt_cache (BD_ADDR remote_bda, UINT8 app_id)
596 {
597 UNUSED(app_id);
598
599 bdstr_t bdstr;
600 sprintf(bdstr, "%02x:%02x:%02x:%02x:%02x:%02x",
601 remote_bda[0], remote_bda[1], remote_bda[2],
602 remote_bda[3], remote_bda[4], remote_bda[5]);
603 btif_config_remove(bdstr, "HidReport");
604
605 BTIF_TRACE_DEBUG("%s() - Reset cache for bda %s", __FUNCTION__, bdstr);
606 }
607 #endif /* #if (BLE_INCLUDED == TRUE && BTA_HH_LE_INCLUDED == TRUE) */
608
609