1 /******************************************************************************
2 *
3 * Copyright (C) 2005-2012 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 /******************************************************************************
20 *
21 * This file contains the HID HOST API in the subsystem of BTA.
22 *
23 ******************************************************************************/
24
25 #include "bt_target.h"
26
27 #if defined(BTA_HH_INCLUDED) && (BTA_HH_INCLUDED == TRUE)
28
29 #include <stdlib.h>
30 #include <string.h>
31 #include <stdio.h>
32
33 #include "bta_hh_api.h"
34 #include "bta_hh_int.h"
35 #include "l2c_api.h"
36
37 /*****************************************************************************
38 ** Constants
39 *****************************************************************************/
40
41 static const tBTA_SYS_REG bta_hh_reg =
42 {
43 bta_hh_hdl_event,
44 BTA_HhDisable
45 };
46
47 /*******************************************************************************
48 **
49 ** Function BTA_HhEnable
50 **
51 ** Description Enable the HID host. This function must be called before
52 ** any other functions in the HID host API are called. When the
53 ** enable operation is complete the callback function will be
54 ** called with BTA_HH_ENABLE_EVT.
55 **
56 **
57 ** Returns void
58 **
59 *******************************************************************************/
BTA_HhEnable(tBTA_SEC sec_mask,tBTA_HH_CBACK * p_cback)60 void BTA_HhEnable(tBTA_SEC sec_mask, tBTA_HH_CBACK *p_cback)
61 {
62 tBTA_HH_API_ENABLE *p_buf;
63
64 /* register with BTA system manager */
65 GKI_sched_lock();
66 bta_sys_register(BTA_ID_HH, &bta_hh_reg);
67 GKI_sched_unlock();
68
69 APPL_TRACE_ERROR0("Calling BTA_HhEnable");
70 p_buf = (tBTA_HH_API_ENABLE *)GKI_getbuf((UINT16)sizeof(tBTA_HH_API_ENABLE));
71
72 if (p_buf != NULL)
73 {
74 memset(p_buf, 0, sizeof(tBTA_HH_API_ENABLE));
75
76 p_buf->hdr.event = BTA_HH_API_ENABLE_EVT;
77 p_buf->p_cback = p_cback;
78 p_buf->sec_mask = sec_mask;
79
80 bta_sys_sendmsg(p_buf);
81 }
82 }
83
84 /*******************************************************************************
85 **
86 ** Function BTA_HhDisable
87 **
88 ** Description Disable the HID host. If the server is currently
89 ** connected, the connection will be closed.
90 **
91 ** Returns void
92 **
93 *******************************************************************************/
BTA_HhDisable(void)94 void BTA_HhDisable(void)
95 {
96 BT_HDR *p_buf;
97
98 bta_sys_deregister(BTA_ID_HH);
99 if ((p_buf = (BT_HDR *)GKI_getbuf(sizeof(BT_HDR))) != NULL)
100 {
101 p_buf->event = BTA_HH_API_DISABLE_EVT;
102 bta_sys_sendmsg(p_buf);
103 }
104 }
105
106 /*******************************************************************************
107 **
108 ** Function BTA_HhClose
109 **
110 ** Description Disconnect a connection.
111 **
112 ** Returns void
113 **
114 *******************************************************************************/
BTA_HhClose(UINT8 dev_handle)115 void BTA_HhClose(UINT8 dev_handle)
116 {
117 BT_HDR *p_buf;
118
119 if ((p_buf = (BT_HDR *)GKI_getbuf((UINT16)sizeof(BT_HDR))) != NULL)
120 {
121 memset(p_buf, 0, sizeof(BT_HDR));
122 p_buf->event = BTA_HH_API_CLOSE_EVT;
123 p_buf->layer_specific = (UINT16) dev_handle;
124
125 bta_sys_sendmsg(p_buf);
126 }
127 }
128
129 /*******************************************************************************
130 **
131 ** Function BTA_HhOpen
132 **
133 ** Description Connect to a device of specified BD address in specified
134 ** protocol mode and security level.
135 **
136 ** Returns void
137 **
138 *******************************************************************************/
BTA_HhOpen(BD_ADDR dev_bda,tBTA_HH_PROTO_MODE mode,tBTA_SEC sec_mask)139 void BTA_HhOpen(BD_ADDR dev_bda, tBTA_HH_PROTO_MODE mode, tBTA_SEC sec_mask)
140 {
141 tBTA_HH_API_CONN *p_buf;
142
143 p_buf = (tBTA_HH_API_CONN *)GKI_getbuf((UINT16)sizeof(tBTA_HH_API_CONN));
144
145 if (p_buf!= NULL)
146 {
147 memset((void *)p_buf, 0, sizeof(tBTA_HH_API_CONN));
148
149 p_buf->hdr.event = BTA_HH_API_OPEN_EVT;
150 p_buf->hdr.layer_specific = BTA_HH_INVALID_HANDLE;
151 p_buf->sec_mask = sec_mask;
152 p_buf->mode = mode;
153 bdcpy(p_buf->bd_addr, dev_bda);
154
155 bta_sys_sendmsg((void *)p_buf);
156 }
157 else
158 {
159 APPL_TRACE_ERROR0("No resource to send HID host Connect request.");
160 }
161 }
162
163 /*******************************************************************************
164 **
165 ** Function bta_hh_snd_write_dev
166 **
167 *******************************************************************************/
bta_hh_snd_write_dev(UINT8 dev_handle,UINT8 t_type,UINT8 param,UINT16 data,UINT8 rpt_id,BT_HDR * p_data)168 static void bta_hh_snd_write_dev(UINT8 dev_handle, UINT8 t_type, UINT8 param,
169 UINT16 data, UINT8 rpt_id, BT_HDR *p_data)
170 {
171 tBTA_HH_CMD_DATA *p_buf;
172 UINT16 len = (UINT16) (sizeof(tBTA_HH_CMD_DATA) );
173
174 if ((p_buf = (tBTA_HH_CMD_DATA *)GKI_getbuf(len))!= NULL)
175 {
176 memset(p_buf, 0, sizeof(tBTA_HH_CMD_DATA));
177
178 p_buf->hdr.event = BTA_HH_API_WRITE_DEV_EVT;
179 p_buf->hdr.layer_specific = (UINT16) dev_handle;
180 p_buf->t_type = t_type;
181 p_buf->data = data;
182 p_buf->param = param;
183 p_buf->p_data = p_data;
184 p_buf->rpt_id = rpt_id;
185
186 bta_sys_sendmsg(p_buf);
187 }
188 }
189 /*******************************************************************************
190 **
191 ** Function BTA_HhSetReport
192 **
193 ** Description send SET_REPORT to device.
194 **
195 ** Parameter dev_handle: device handle
196 ** r_type: report type, could be BTA_HH_RPTT_OUTPUT or
197 ** BTA_HH_RPTT_FEATURE.
198 ** Returns void
199 **
200 *******************************************************************************/
BTA_HhSetReport(UINT8 dev_handle,tBTA_HH_RPT_TYPE r_type,BT_HDR * p_data)201 void BTA_HhSetReport(UINT8 dev_handle, tBTA_HH_RPT_TYPE r_type, BT_HDR *p_data)
202 {
203 bta_hh_snd_write_dev(dev_handle, HID_TRANS_SET_REPORT, r_type, 0, 0, p_data);
204 }
205 /*******************************************************************************
206 **
207 ** Function BTA_HhGetReport
208 **
209 ** Description Send a GET_REPORT to HID device.
210 **
211 ** Returns void
212 **
213 *******************************************************************************/
BTA_HhGetReport(UINT8 dev_handle,tBTA_HH_RPT_TYPE r_type,UINT8 rpt_id,UINT16 buf_size)214 void BTA_HhGetReport(UINT8 dev_handle, tBTA_HH_RPT_TYPE r_type, UINT8 rpt_id, UINT16 buf_size)
215 {
216 UINT8 param = (buf_size) ? (r_type | 0x08) : r_type;
217
218 bta_hh_snd_write_dev(dev_handle, HID_TRANS_GET_REPORT, param,
219 buf_size, rpt_id, NULL);
220 }
221 /*******************************************************************************
222 **
223 ** Function BTA_HhSetProtoMode
224 **
225 ** Description This function set the protocol mode at specified HID handle
226 **
227 ** Returns void
228 **
229 *******************************************************************************/
BTA_HhSetProtoMode(UINT8 dev_handle,tBTA_HH_PROTO_MODE p_type)230 void BTA_HhSetProtoMode(UINT8 dev_handle, tBTA_HH_PROTO_MODE p_type)
231 {
232 bta_hh_snd_write_dev(dev_handle, HID_TRANS_SET_PROTOCOL, (UINT8)p_type,
233 0, 0, NULL);
234 }
235 /*******************************************************************************
236 **
237 ** Function BTA_HhGetProtoMode
238 **
239 ** Description This function get protocol mode information.
240 **
241 ** Returns void
242 **
243 *******************************************************************************/
BTA_HhGetProtoMode(UINT8 dev_handle)244 void BTA_HhGetProtoMode(UINT8 dev_handle)
245 {
246 bta_hh_snd_write_dev(dev_handle, HID_TRANS_GET_PROTOCOL, 0, 0, 0, NULL);
247 }
248 /*******************************************************************************
249 **
250 ** Function BTA_HhSetIdle
251 **
252 ** Description send SET_IDLE to device.
253 **
254 ** Returns void
255 **
256 *******************************************************************************/
BTA_HhSetIdle(UINT8 dev_handle,UINT16 idle_rate)257 void BTA_HhSetIdle(UINT8 dev_handle, UINT16 idle_rate)
258 {
259 bta_hh_snd_write_dev(dev_handle, HID_TRANS_SET_IDLE, 0, idle_rate, 0, NULL);
260 }
261
262 /*******************************************************************************
263 **
264 ** Function BTA_HhGetIdle
265 **
266 ** Description Send a GET_IDLE from HID device.
267 **
268 ** Returns void
269 **
270 *******************************************************************************/
BTA_HhGetIdle(UINT8 dev_handle)271 void BTA_HhGetIdle(UINT8 dev_handle)
272 {
273 bta_hh_snd_write_dev(dev_handle, HID_TRANS_GET_IDLE, 0, 0, 0, NULL);
274 }
275 /*******************************************************************************
276 **
277 ** Function BTA_HhSendCtrl
278 **
279 ** Description Send a control command to HID device.
280 **
281 ** Returns void
282 **
283 *******************************************************************************/
BTA_HhSendCtrl(UINT8 dev_handle,tBTA_HH_TRANS_CTRL_TYPE c_type)284 void BTA_HhSendCtrl(UINT8 dev_handle, tBTA_HH_TRANS_CTRL_TYPE c_type)
285 {
286 bta_hh_snd_write_dev(dev_handle, HID_TRANS_CONTROL, (UINT8)c_type, 0, 0, NULL);
287 }
288 /*******************************************************************************
289 **
290 ** Function BTA_HhSendData
291 **
292 ** Description This function send DATA transaction to HID device.
293 **
294 ** Parameter dev_handle: device handle
295 ** dev_bda: remote device address
296 ** p_data: data to be sent in the DATA transaction; or
297 ** the data to be write into the Output Report of a LE HID
298 ** device. The report is identified the report ID which is
299 ** the value of the byte (UINT8 *)(p_buf + 1) + p_buf->offset.
300 ** p_data->layer_specific needs to be set to the report type,
301 ** it can be OUTPUT report, or FEATURE report.
302 **
303 ** Returns void
304 **
305 *******************************************************************************/
BTA_HhSendData(UINT8 dev_handle,BD_ADDR dev_bda,BT_HDR * p_data)306 void BTA_HhSendData(UINT8 dev_handle, BD_ADDR dev_bda, BT_HDR *p_data)
307 {
308 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
309 if (p_data->layer_specific != BTA_HH_RPTT_OUTPUT)
310 {
311 APPL_TRACE_ERROR0("ERROR! Wrong report type! Write Command only valid for output report!");
312 return;
313 }
314 #endif
315 bta_hh_snd_write_dev(dev_handle, HID_TRANS_DATA, (UINT8)p_data->layer_specific, 0, 0, p_data);
316 }
317
318 /*******************************************************************************
319 **
320 ** Function BTA_HhGetDscpInfo
321 **
322 ** Description Get HID device report descriptor
323 **
324 ** Returns void
325 **
326 *******************************************************************************/
BTA_HhGetDscpInfo(UINT8 dev_handle)327 void BTA_HhGetDscpInfo(UINT8 dev_handle)
328 {
329 BT_HDR *p_buf;
330
331 if ((p_buf = (BT_HDR *)GKI_getbuf((UINT16)sizeof(BT_HDR))) != NULL)
332 {
333 memset(p_buf, 0, sizeof(BT_HDR));
334 p_buf->event = BTA_HH_API_GET_DSCP_EVT;
335 p_buf->layer_specific = (UINT16) dev_handle;
336
337 bta_sys_sendmsg(p_buf);
338 }
339 }
340
341 /*******************************************************************************
342 **
343 ** Function BTA_HhAddDev
344 **
345 ** Description Add a virtually cabled device into HID-Host device list
346 ** to manage and assign a device handle for future API call,
347 ** host applciation call this API at start-up to initialize its
348 ** virtually cabled devices.
349 **
350 ** Returns void
351 **
352 *******************************************************************************/
BTA_HhAddDev(BD_ADDR bda,tBTA_HH_ATTR_MASK attr_mask,UINT8 sub_class,UINT8 app_id,tBTA_HH_DEV_DSCP_INFO dscp_info)353 void BTA_HhAddDev(BD_ADDR bda, tBTA_HH_ATTR_MASK attr_mask, UINT8 sub_class,
354 UINT8 app_id, tBTA_HH_DEV_DSCP_INFO dscp_info)
355 {
356 tBTA_HH_MAINT_DEV *p_buf;
357 UINT16 len = sizeof(tBTA_HH_MAINT_DEV) + dscp_info.descriptor.dl_len;
358
359 p_buf = (tBTA_HH_MAINT_DEV *)GKI_getbuf(len);
360
361 if (p_buf != NULL)
362 {
363 memset(p_buf, 0, sizeof(tBTA_HH_MAINT_DEV));
364
365 p_buf->hdr.event = BTA_HH_API_MAINT_DEV_EVT;
366 p_buf->sub_event = BTA_HH_ADD_DEV_EVT;
367 p_buf->hdr.layer_specific = BTA_HH_INVALID_HANDLE;
368
369 p_buf->attr_mask = (UINT16) attr_mask;
370 p_buf->sub_class = sub_class;
371 p_buf->app_id = app_id;
372 bdcpy(p_buf->bda, bda);
373
374 memcpy(&p_buf->dscp_info, &dscp_info, sizeof(tBTA_HH_DEV_DSCP_INFO));
375 if ( dscp_info.descriptor.dl_len != 0 && dscp_info.descriptor.dsc_list)
376 {
377 p_buf->dscp_info.descriptor.dl_len = dscp_info.descriptor.dl_len;
378 p_buf->dscp_info.descriptor.dsc_list = (UINT8 *)(p_buf + 1);
379 memcpy(p_buf->dscp_info.descriptor.dsc_list, dscp_info.descriptor.dsc_list, dscp_info.descriptor.dl_len);
380 }
381 else
382 {
383 p_buf->dscp_info.descriptor.dsc_list = NULL;
384 p_buf->dscp_info.descriptor.dl_len = 0;
385 }
386
387 bta_sys_sendmsg(p_buf);
388 }
389 }
390 /*******************************************************************************
391 **
392 ** Function BTA_HhRemoveDev
393 **
394 ** Description Remove a device from the HID host devices list.
395 **
396 ** Returns void
397 **
398 *******************************************************************************/
BTA_HhRemoveDev(UINT8 dev_handle)399 void BTA_HhRemoveDev(UINT8 dev_handle )
400 {
401 tBTA_HH_MAINT_DEV *p_buf;
402
403 p_buf = (tBTA_HH_MAINT_DEV *)GKI_getbuf((UINT16)sizeof(tBTA_HH_MAINT_DEV));
404
405 if (p_buf != NULL)
406 {
407 memset(p_buf, 0, sizeof(tBTA_HH_MAINT_DEV));
408
409 p_buf->hdr.event = BTA_HH_API_MAINT_DEV_EVT;
410 p_buf->sub_event = BTA_HH_RMV_DEV_EVT;
411 p_buf->hdr.layer_specific = (UINT16) dev_handle;
412
413 bta_sys_sendmsg(p_buf);
414 }
415 }
416 #if BTA_HH_LE_INCLUDED == TRUE
417
418 /*******************************************************************************
419 **
420 ** Function BTA_HhUpdateLeScanParam
421 **
422 ** Description Update the scan paramteters if connected to a LE hid device as
423 ** report host.
424 **
425 ** Returns void
426 **
427 *******************************************************************************/
BTA_HhUpdateLeScanParam(UINT8 dev_handle,UINT16 scan_int,UINT16 scan_win)428 void BTA_HhUpdateLeScanParam(UINT8 dev_handle, UINT16 scan_int, UINT16 scan_win)
429 {
430 tBTA_HH_SCPP_UPDATE *p_buf;
431
432 p_buf = (tBTA_HH_SCPP_UPDATE *)GKI_getbuf((UINT16)sizeof(tBTA_HH_SCPP_UPDATE));
433
434 if (p_buf != NULL)
435 {
436 memset(p_buf, 0, sizeof(tBTA_HH_SCPP_UPDATE));
437
438 p_buf->hdr.event = BTA_HH_API_SCPP_UPDATE_EVT;
439 p_buf->hdr.layer_specific = (UINT16) dev_handle;
440 p_buf->scan_int = scan_int;
441 p_buf->scan_win = scan_win;
442
443 bta_sys_sendmsg(p_buf);
444 }
445 }
446 #endif
447 /*******************************************************************************/
448 /* Utility Function */
449 /*******************************************************************************/
450
451 /*******************************************************************************
452 **
453 ** Function BTA_HhParseBootRpt
454 **
455 ** Description This utility function parse a boot mode report.
456 ** For keyboard report, report data will carry the keycode max
457 ** up to 6 key press in one report. Application need to convert
458 ** the keycode into keypress character according to keyboard
459 ** language.
460 **
461 ** Returns void
462 **
463 *******************************************************************************/
BTA_HhParseBootRpt(tBTA_HH_BOOT_RPT * p_data,UINT8 * p_report,UINT16 report_len)464 void BTA_HhParseBootRpt(tBTA_HH_BOOT_RPT *p_data, UINT8 *p_report,
465 UINT16 report_len)
466 {
467 p_data->dev_type = BTA_HH_DEVT_UNKNOWN;
468
469 if (p_report)
470 {
471 /* first byte is report ID */
472 switch (p_report[0])
473 {
474 case BTA_HH_KEYBD_RPT_ID: /* key board report ID */
475 p_data->dev_type = p_report[0];
476 bta_hh_parse_keybd_rpt(p_data, p_report + 1, (UINT16)(report_len -1));
477 break;
478
479 case BTA_HH_MOUSE_RPT_ID: /* mouse report ID */
480 p_data->dev_type = p_report[0];
481 bta_hh_parse_mice_rpt(p_data, p_report + 1, (UINT16)(report_len - 1));
482 break;
483
484 default:
485 APPL_TRACE_DEBUG1("Unknown boot report: %d", p_report[0]);;
486 break;
487 }
488 }
489
490 return;
491 }
492
493 #endif /* BTA_HH_INCLUDED */
494