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 #define LOG_TAG "bt_bta_hh"
26
27 #include "bta_hh_api.h"
28
29 #include "bt_target.h"
30
31 #if (BTA_HH_INCLUDED == TRUE)
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 #include "bta_hh_int.h"
38 #include "l2c_api.h"
39 #include "osi/include/log.h"
40 #include "osi/include/osi.h"
41 #include "utl.h"
42
43 /*****************************************************************************
44 * Constants
45 ****************************************************************************/
46
47 static const tBTA_SYS_REG bta_hh_reg = {bta_hh_hdl_event, BTA_HhDisable};
48
49 /*******************************************************************************
50 *
51 * Function BTA_HhEnable
52 *
53 * Description Enable the HID host. This function must be called before
54 * any other functions in the HID host API are called. When the
55 * enable operation is complete the callback function will be
56 * called with BTA_HH_ENABLE_EVT.
57 *
58 *
59 * Returns void
60 *
61 ******************************************************************************/
BTA_HhEnable(tBTA_SEC sec_mask,tBTA_HH_CBACK * p_cback)62 void BTA_HhEnable(tBTA_SEC sec_mask, tBTA_HH_CBACK* p_cback) {
63 tBTA_HH_API_ENABLE* p_buf =
64 (tBTA_HH_API_ENABLE*)osi_calloc(sizeof(tBTA_HH_API_ENABLE));
65
66 LOG_INFO(LOG_TAG, "%s sec_mask:0x%x p_cback:%p", __func__, sec_mask, p_cback);
67
68 /* register with BTA system manager */
69 bta_sys_register(BTA_ID_HH, &bta_hh_reg);
70
71 p_buf->hdr.event = BTA_HH_API_ENABLE_EVT;
72 p_buf->p_cback = p_cback;
73 p_buf->sec_mask = sec_mask;
74
75 bta_sys_sendmsg(p_buf);
76 }
77
78 /*******************************************************************************
79 *
80 * Function BTA_HhDisable
81 *
82 * Description Disable the HID host. If the server is currently
83 * connected, the connection will be closed.
84 *
85 * Returns void
86 *
87 ******************************************************************************/
BTA_HhDisable(void)88 void BTA_HhDisable(void) {
89 BT_HDR* p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR));
90
91 bta_sys_deregister(BTA_ID_HH);
92 p_buf->event = BTA_HH_API_DISABLE_EVT;
93
94 bta_sys_sendmsg(p_buf);
95 }
96
97 /*******************************************************************************
98 *
99 * Function BTA_HhClose
100 *
101 * Description Disconnect a connection.
102 *
103 * Returns void
104 *
105 ******************************************************************************/
BTA_HhClose(uint8_t dev_handle)106 void BTA_HhClose(uint8_t dev_handle) {
107 BT_HDR* p_buf = (BT_HDR*)osi_calloc(sizeof(BT_HDR));
108
109 p_buf->event = BTA_HH_API_CLOSE_EVT;
110 p_buf->layer_specific = (uint16_t)dev_handle;
111
112 bta_sys_sendmsg(p_buf);
113 }
114
115 /*******************************************************************************
116 *
117 * Function BTA_HhOpen
118 *
119 * Description Connect to a device of specified BD address in specified
120 * protocol mode and security level.
121 *
122 * Returns void
123 *
124 ******************************************************************************/
BTA_HhOpen(BD_ADDR dev_bda,tBTA_HH_PROTO_MODE mode,tBTA_SEC sec_mask)125 void BTA_HhOpen(BD_ADDR dev_bda, tBTA_HH_PROTO_MODE mode, tBTA_SEC sec_mask) {
126 tBTA_HH_API_CONN* p_buf =
127 (tBTA_HH_API_CONN*)osi_calloc(sizeof(tBTA_HH_API_CONN));
128
129 p_buf->hdr.event = BTA_HH_API_OPEN_EVT;
130 p_buf->hdr.layer_specific = BTA_HH_INVALID_HANDLE;
131 p_buf->sec_mask = sec_mask;
132 p_buf->mode = mode;
133 bdcpy(p_buf->bd_addr, dev_bda);
134
135 bta_sys_sendmsg((void*)p_buf);
136 }
137
138 /*******************************************************************************
139 *
140 * Function bta_hh_snd_write_dev
141 *
142 ******************************************************************************/
bta_hh_snd_write_dev(uint8_t dev_handle,uint8_t t_type,uint8_t param,uint16_t data,uint8_t rpt_id,BT_HDR * p_data)143 static void bta_hh_snd_write_dev(uint8_t dev_handle, uint8_t t_type,
144 uint8_t param, uint16_t data, uint8_t rpt_id,
145 BT_HDR* p_data) {
146 tBTA_HH_CMD_DATA* p_buf =
147 (tBTA_HH_CMD_DATA*)osi_calloc(sizeof(tBTA_HH_CMD_DATA));
148
149 p_buf->hdr.event = BTA_HH_API_WRITE_DEV_EVT;
150 p_buf->hdr.layer_specific = (uint16_t)dev_handle;
151 p_buf->t_type = t_type;
152 p_buf->data = data;
153 p_buf->param = param;
154 p_buf->p_data = p_data;
155 p_buf->rpt_id = rpt_id;
156
157 bta_sys_sendmsg(p_buf);
158 }
159
160 /*******************************************************************************
161 *
162 * Function BTA_HhSetReport
163 *
164 * Description send SET_REPORT to device.
165 *
166 * Parameter dev_handle: device handle
167 * r_type: report type, could be BTA_HH_RPTT_OUTPUT or
168 * BTA_HH_RPTT_FEATURE.
169 * Returns void
170 *
171 ******************************************************************************/
BTA_HhSetReport(uint8_t dev_handle,tBTA_HH_RPT_TYPE r_type,BT_HDR * p_data)172 void BTA_HhSetReport(uint8_t dev_handle, tBTA_HH_RPT_TYPE r_type,
173 BT_HDR* p_data) {
174 bta_hh_snd_write_dev(dev_handle, HID_TRANS_SET_REPORT, r_type, 0, 0, p_data);
175 }
176 /*******************************************************************************
177 *
178 * Function BTA_HhGetReport
179 *
180 * Description Send a GET_REPORT to HID device.
181 *
182 * Returns void
183 *
184 ******************************************************************************/
BTA_HhGetReport(uint8_t dev_handle,tBTA_HH_RPT_TYPE r_type,uint8_t rpt_id,uint16_t buf_size)185 void BTA_HhGetReport(uint8_t dev_handle, tBTA_HH_RPT_TYPE r_type,
186 uint8_t rpt_id, uint16_t buf_size) {
187 uint8_t param = (buf_size) ? (r_type | 0x08) : r_type;
188
189 bta_hh_snd_write_dev(dev_handle, HID_TRANS_GET_REPORT, param, buf_size,
190 rpt_id, NULL);
191 }
192 /*******************************************************************************
193 *
194 * Function BTA_HhSetProtoMode
195 *
196 * Description This function set the protocol mode at specified HID handle
197 *
198 * Returns void
199 *
200 ******************************************************************************/
BTA_HhSetProtoMode(uint8_t dev_handle,tBTA_HH_PROTO_MODE p_type)201 void BTA_HhSetProtoMode(uint8_t dev_handle, tBTA_HH_PROTO_MODE p_type) {
202 bta_hh_snd_write_dev(dev_handle, HID_TRANS_SET_PROTOCOL, (uint8_t)p_type, 0,
203 0, NULL);
204 }
205 /*******************************************************************************
206 *
207 * Function BTA_HhGetProtoMode
208 *
209 * Description This function get protocol mode information.
210 *
211 * Returns void
212 *
213 ******************************************************************************/
BTA_HhGetProtoMode(uint8_t dev_handle)214 void BTA_HhGetProtoMode(uint8_t dev_handle) {
215 bta_hh_snd_write_dev(dev_handle, HID_TRANS_GET_PROTOCOL, 0, 0, 0, NULL);
216 }
217 /*******************************************************************************
218 *
219 * Function BTA_HhSetIdle
220 *
221 * Description send SET_IDLE to device.
222 *
223 * Returns void
224 *
225 ******************************************************************************/
BTA_HhSetIdle(uint8_t dev_handle,uint16_t idle_rate)226 void BTA_HhSetIdle(uint8_t dev_handle, uint16_t idle_rate) {
227 bta_hh_snd_write_dev(dev_handle, HID_TRANS_SET_IDLE, 0, idle_rate, 0, NULL);
228 }
229
230 /*******************************************************************************
231 *
232 * Function BTA_HhGetIdle
233 *
234 * Description Send a GET_IDLE from HID device.
235 *
236 * Returns void
237 *
238 ******************************************************************************/
BTA_HhGetIdle(uint8_t dev_handle)239 void BTA_HhGetIdle(uint8_t dev_handle) {
240 bta_hh_snd_write_dev(dev_handle, HID_TRANS_GET_IDLE, 0, 0, 0, NULL);
241 }
242 /*******************************************************************************
243 *
244 * Function BTA_HhSendCtrl
245 *
246 * Description Send a control command to HID device.
247 *
248 * Returns void
249 *
250 ******************************************************************************/
BTA_HhSendCtrl(uint8_t dev_handle,tBTA_HH_TRANS_CTRL_TYPE c_type)251 void BTA_HhSendCtrl(uint8_t dev_handle, tBTA_HH_TRANS_CTRL_TYPE c_type) {
252 bta_hh_snd_write_dev(dev_handle, HID_TRANS_CONTROL, (uint8_t)c_type, 0, 0,
253 NULL);
254 }
255 /*******************************************************************************
256 *
257 * Function BTA_HhSendData
258 *
259 * Description This function send DATA transaction to HID device.
260 *
261 * Parameter dev_handle: device handle
262 * dev_bda: remote device address
263 * p_data: data to be sent in the DATA transaction; or
264 * the data to be write into the Output Report of a LE
265 * HID device. The report is identified the report ID
266 * which is the value of the byte
267 * (uint8_t *)(p_buf + 1) + *p_buf->offset.
268 * p_data->layer_specific needs to be set to the report
269 * type. It can be OUTPUT report, or FEATURE report.
270 *
271 * Returns void
272 *
273 ******************************************************************************/
BTA_HhSendData(uint8_t dev_handle,UNUSED_ATTR BD_ADDR dev_bda,BT_HDR * p_data)274 void BTA_HhSendData(uint8_t dev_handle, UNUSED_ATTR BD_ADDR dev_bda,
275 BT_HDR* p_data) {
276 #if (BTA_HH_LE_INCLUDED == TRUE)
277 if (p_data->layer_specific != BTA_HH_RPTT_OUTPUT) {
278 APPL_TRACE_ERROR(
279 "ERROR! Wrong report type! Write Command only valid for output "
280 "report!");
281 return;
282 }
283 #endif
284 bta_hh_snd_write_dev(dev_handle, HID_TRANS_DATA,
285 (uint8_t)p_data->layer_specific, 0, 0, p_data);
286 }
287
288 /*******************************************************************************
289 *
290 * Function BTA_HhGetDscpInfo
291 *
292 * Description Get HID device report descriptor
293 *
294 * Returns void
295 *
296 ******************************************************************************/
BTA_HhGetDscpInfo(uint8_t dev_handle)297 void BTA_HhGetDscpInfo(uint8_t dev_handle) {
298 BT_HDR* p_buf = (BT_HDR*)osi_calloc(sizeof(BT_HDR));
299
300 p_buf->event = BTA_HH_API_GET_DSCP_EVT;
301 p_buf->layer_specific = (uint16_t)dev_handle;
302
303 bta_sys_sendmsg(p_buf);
304 }
305
306 /*******************************************************************************
307 *
308 * Function BTA_HhAddDev
309 *
310 * Description Add a virtually cabled device into HID-Host device list
311 * to manage and assign a device handle for future API call,
312 * host applciation call this API at start-up to initialize its
313 * virtually cabled devices.
314 *
315 * Returns void
316 *
317 ******************************************************************************/
BTA_HhAddDev(BD_ADDR bda,tBTA_HH_ATTR_MASK attr_mask,uint8_t sub_class,uint8_t app_id,tBTA_HH_DEV_DSCP_INFO dscp_info)318 void BTA_HhAddDev(BD_ADDR bda, tBTA_HH_ATTR_MASK attr_mask, uint8_t sub_class,
319 uint8_t app_id, tBTA_HH_DEV_DSCP_INFO dscp_info) {
320 size_t len = sizeof(tBTA_HH_MAINT_DEV) + dscp_info.descriptor.dl_len;
321 tBTA_HH_MAINT_DEV* p_buf = (tBTA_HH_MAINT_DEV*)osi_calloc(len);
322
323 p_buf->hdr.event = BTA_HH_API_MAINT_DEV_EVT;
324 p_buf->sub_event = BTA_HH_ADD_DEV_EVT;
325 p_buf->hdr.layer_specific = BTA_HH_INVALID_HANDLE;
326
327 p_buf->attr_mask = (uint16_t)attr_mask;
328 p_buf->sub_class = sub_class;
329 p_buf->app_id = app_id;
330 bdcpy(p_buf->bda, bda);
331
332 memcpy(&p_buf->dscp_info, &dscp_info, sizeof(tBTA_HH_DEV_DSCP_INFO));
333 if (dscp_info.descriptor.dl_len != 0 && dscp_info.descriptor.dsc_list) {
334 p_buf->dscp_info.descriptor.dl_len = dscp_info.descriptor.dl_len;
335 p_buf->dscp_info.descriptor.dsc_list = (uint8_t*)(p_buf + 1);
336 memcpy(p_buf->dscp_info.descriptor.dsc_list, dscp_info.descriptor.dsc_list,
337 dscp_info.descriptor.dl_len);
338 } else {
339 p_buf->dscp_info.descriptor.dsc_list = NULL;
340 p_buf->dscp_info.descriptor.dl_len = 0;
341 }
342
343 bta_sys_sendmsg(p_buf);
344 }
345
346 /*******************************************************************************
347 *
348 * Function BTA_HhRemoveDev
349 *
350 * Description Remove a device from the HID host devices list.
351 *
352 * Returns void
353 *
354 ******************************************************************************/
BTA_HhRemoveDev(uint8_t dev_handle)355 void BTA_HhRemoveDev(uint8_t dev_handle) {
356 tBTA_HH_MAINT_DEV* p_buf =
357 (tBTA_HH_MAINT_DEV*)osi_calloc(sizeof(tBTA_HH_MAINT_DEV));
358
359 p_buf->hdr.event = BTA_HH_API_MAINT_DEV_EVT;
360 p_buf->sub_event = BTA_HH_RMV_DEV_EVT;
361 p_buf->hdr.layer_specific = (uint16_t)dev_handle;
362
363 bta_sys_sendmsg(p_buf);
364 }
365
366 /******************************************************************************/
367 /* Utility Function */
368 /******************************************************************************/
369
370 /*******************************************************************************
371 *
372 * Function BTA_HhParseBootRpt
373 *
374 * Description This utility function parse a boot mode report.
375 * For keyboard report, report data will carry the keycode max
376 * up to 6 key press in one report. Application need to convert
377 * the keycode into keypress character according to keyboard
378 * language.
379 *
380 * Returns void
381 *
382 ******************************************************************************/
BTA_HhParseBootRpt(tBTA_HH_BOOT_RPT * p_data,uint8_t * p_report,uint16_t report_len)383 void BTA_HhParseBootRpt(tBTA_HH_BOOT_RPT* p_data, uint8_t* p_report,
384 uint16_t report_len) {
385 p_data->dev_type = BTA_HH_DEVT_UNKNOWN;
386
387 if (p_report) {
388 /* first byte is report ID */
389 switch (p_report[0]) {
390 case BTA_HH_KEYBD_RPT_ID: /* key board report ID */
391 p_data->dev_type = p_report[0];
392 bta_hh_parse_keybd_rpt(p_data, p_report + 1,
393 (uint16_t)(report_len - 1));
394 break;
395
396 case BTA_HH_MOUSE_RPT_ID: /* mouse report ID */
397 p_data->dev_type = p_report[0];
398 bta_hh_parse_mice_rpt(p_data, p_report + 1, (uint16_t)(report_len - 1));
399 break;
400
401 default:
402 APPL_TRACE_DEBUG("Unknown boot report: %d", p_report[0]);
403 ;
404 break;
405 }
406 }
407
408 return;
409 }
410
411 #endif /* BTA_HH_INCLUDED */
412