1 /******************************************************************************
2 *
3 * Copyright (C) 2010-2014 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 is the main implementation file for the NFA device manager.
22 *
23 ******************************************************************************/
24 #include <string>
25
26 #include <android-base/stringprintf.h>
27 #include <base/logging.h>
28
29 #include "nfa_api.h"
30 #include "nfa_dm_int.h"
31
32 using android::base::StringPrintf;
33
34 extern bool nfc_debug_enabled;
35
36 /*****************************************************************************
37 ** Constants and types
38 *****************************************************************************/
39 static const tNFA_SYS_REG nfa_dm_sys_reg = {nfa_dm_sys_enable, nfa_dm_evt_hdlr,
40 nfa_dm_sys_disable,
41 nfa_dm_proc_nfcc_power_mode};
42
43 tNFA_DM_CB nfa_dm_cb = {};
44
45 #define NFA_DM_NUM_ACTIONS (NFA_DM_MAX_EVT & 0x00ff)
46
47 /* type for action functions */
48 typedef bool (*tNFA_DM_ACTION)(tNFA_DM_MSG* p_data);
49
50 /* action function list */
51 const tNFA_DM_ACTION nfa_dm_action[] = {
52 /* device manager local device API events */
53 nfa_dm_enable, /* NFA_DM_API_ENABLE_EVT */
54 nfa_dm_disable, /* NFA_DM_API_DISABLE_EVT */
55 nfa_dm_set_config, /* NFA_DM_API_SET_CONFIG_EVT */
56 nfa_dm_get_config, /* NFA_DM_API_GET_CONFIG_EVT */
57 nfa_dm_act_request_excl_rf_ctrl, /* NFA_DM_API_REQUEST_EXCL_RF_CTRL_EVT */
58 nfa_dm_act_release_excl_rf_ctrl, /* NFA_DM_API_RELEASE_EXCL_RF_CTRL_EVT */
59 nfa_dm_act_enable_polling, /* NFA_DM_API_ENABLE_POLLING_EVT */
60 nfa_dm_act_disable_polling, /* NFA_DM_API_DISABLE_POLLING_EVT */
61 nfa_dm_act_enable_listening, /* NFA_DM_API_ENABLE_LISTENING_EVT */
62 nfa_dm_act_disable_listening, /* NFA_DM_API_DISABLE_LISTENING_EVT */
63 nfa_dm_act_pause_p2p, /* NFA_DM_API_PAUSE_P2P_EVT */
64 nfa_dm_act_resume_p2p, /* NFA_DM_API_RESUME_P2P_EVT */
65 nfa_dm_act_send_raw_frame, /* NFA_DM_API_RAW_FRAME_EVT */
66 nfa_dm_set_p2p_listen_tech, /* NFA_DM_API_SET_P2P_LISTEN_TECH_EVT */
67 nfa_dm_act_start_rf_discovery, /* NFA_DM_API_START_RF_DISCOVERY_EVT */
68 nfa_dm_act_stop_rf_discovery, /* NFA_DM_API_STOP_RF_DISCOVERY_EVT */
69 nfa_dm_act_set_rf_disc_duration, /* NFA_DM_API_SET_RF_DISC_DURATION_EVT */
70 nfa_dm_act_select, /* NFA_DM_API_SELECT_EVT */
71 nfa_dm_act_update_rf_params, /* NFA_DM_API_UPDATE_RF_PARAMS_EVT */
72 nfa_dm_act_deactivate, /* NFA_DM_API_DEACTIVATE_EVT */
73 nfa_dm_act_power_off_sleep, /* NFA_DM_API_POWER_OFF_SLEEP_EVT */
74 nfa_dm_ndef_reg_hdlr, /* NFA_DM_API_REG_NDEF_HDLR_EVT */
75 nfa_dm_ndef_dereg_hdlr, /* NFA_DM_API_DEREG_NDEF_HDLR_EVT */
76 nfa_dm_act_reg_vsc, /* NFA_DM_API_REG_VSC_EVT */
77 nfa_dm_act_send_vsc, /* NFA_DM_API_SEND_VSC_EVT */
78 nfa_dm_act_disable_timeout, /* NFA_DM_TIMEOUT_DISABLE_EVT */
79 nfa_dm_set_power_sub_state, /* NFA_DM_API_SET_POWER_SUB_STATE_EVT */
80 nfa_dm_act_send_raw_vs /* NFA_DM_API_SEND_RAW_VS_EVT */
81 };
82
83 /*****************************************************************************
84 ** Local function prototypes
85 *****************************************************************************/
86 static std::string nfa_dm_evt_2_str(uint16_t event);
87 /*******************************************************************************
88 **
89 ** Function nfa_dm_init
90 **
91 ** Description Initialises the NFC device manager
92 **
93 ** Returns void
94 **
95 *******************************************************************************/
nfa_dm_init(void)96 void nfa_dm_init(void) {
97 DLOG_IF(INFO, nfc_debug_enabled) << __func__;
98 memset(&nfa_dm_cb, 0, sizeof(tNFA_DM_CB));
99 nfa_dm_cb.poll_disc_handle = NFA_HANDLE_INVALID;
100 nfa_dm_cb.disc_cb.disc_duration = NFA_DM_DISC_DURATION_POLL;
101 nfa_dm_cb.nfcc_pwr_mode = NFA_DM_PWR_MODE_FULL;
102 nfa_dm_cb.pending_power_state = SCREEN_STATE_INVALID;
103
104 /* register message handler on NFA SYS */
105 nfa_sys_register(NFA_ID_DM, &nfa_dm_sys_reg);
106 }
107
108 /*******************************************************************************
109 **
110 ** Function nfa_dm_evt_hdlr
111 **
112 ** Description Event handling function for DM
113 **
114 **
115 ** Returns void
116 **
117 *******************************************************************************/
nfa_dm_evt_hdlr(NFC_HDR * p_msg)118 bool nfa_dm_evt_hdlr(NFC_HDR* p_msg) {
119 bool freebuf = true;
120 uint16_t event = p_msg->event & 0x00ff;
121
122 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
123 "event: %s (0x%02x)", nfa_dm_evt_2_str(event).c_str(), event);
124
125 /* execute action functions */
126 if (event < NFA_DM_NUM_ACTIONS) {
127 freebuf = (*nfa_dm_action[event])((tNFA_DM_MSG*)p_msg);
128 }
129 return freebuf;
130 }
131
132 /*******************************************************************************
133 **
134 ** Function nfa_dm_sys_disable
135 **
136 ** Description This function is called after all subsystems have been
137 ** disabled.
138 **
139 ** Returns void
140 **
141 *******************************************************************************/
nfa_dm_sys_disable(void)142 void nfa_dm_sys_disable(void) {
143 /* Disable the DM sub-system */
144 /* If discovery state is not IDLE or DEACTIVATED and graceful disable, */
145 /* then we need to deactivate link or stop discovery */
146
147 if (nfa_sys_is_graceful_disable()) {
148 if ((nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_IDLE) &&
149 ((nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_DISABLING) == 0)) {
150 /* discovery is not started */
151 nfa_dm_disable_complete();
152 } else {
153 /* probably waiting to be disabled */
154 LOG(WARNING) << StringPrintf("DM disc_state state = %d disc_flags:0x%x",
155 nfa_dm_cb.disc_cb.disc_state,
156 nfa_dm_cb.disc_cb.disc_flags);
157 }
158
159 } else {
160 nfa_dm_disable_complete();
161 }
162 }
163
164 /*******************************************************************************
165 **
166 ** Function nfa_dm_is_protocol_supported
167 **
168 ** Description Check if protocol is supported by RW module
169 **
170 ** Returns TRUE if protocol is supported by NFA
171 **
172 *******************************************************************************/
nfa_dm_is_protocol_supported(tNFC_PROTOCOL protocol,uint8_t sel_res)173 bool nfa_dm_is_protocol_supported(tNFC_PROTOCOL protocol, uint8_t sel_res) {
174 return ((protocol == NFC_PROTOCOL_T1T) ||
175 ((protocol == NFC_PROTOCOL_T2T) &&
176 (sel_res == NFC_SEL_RES_NFC_FORUM_T2T)) ||
177 (protocol == NFC_PROTOCOL_T3T) ||
178 (protocol == NFC_PROTOCOL_ISO_DEP) ||
179 (protocol == NFC_PROTOCOL_NFC_DEP) ||
180 (protocol == NFC_PROTOCOL_T5T) || (protocol == NFC_PROTOCOL_MIFARE));
181 }
182 /*******************************************************************************
183 **
184 ** Function nfa_dm_is_active
185 **
186 ** Description check if all modules of NFA is done with enable process and
187 ** NFA is not restoring NFCC.
188 **
189 ** Returns TRUE, if NFA_DM_ENABLE_EVT is reported and it is not
190 ** restoring NFCC
191 **
192 *******************************************************************************/
nfa_dm_is_active(void)193 bool nfa_dm_is_active(void) {
194 DLOG_IF(INFO, nfc_debug_enabled)
195 << StringPrintf("flags:0x%x", nfa_dm_cb.flags);
196 if ((nfa_dm_cb.flags & NFA_DM_FLAGS_DM_IS_ACTIVE) &&
197 ((nfa_dm_cb.flags &
198 (NFA_DM_FLAGS_ENABLE_EVT_PEND | NFA_DM_FLAGS_NFCC_IS_RESTORING |
199 NFA_DM_FLAGS_POWER_OFF_SLEEP)) == 0)) {
200 return true;
201 } else
202 return false;
203 }
204 /*******************************************************************************
205 **
206 ** Function nfa_dm_check_set_config
207 **
208 ** Description Update config parameters only if it's different from NFCC
209 **
210 **
211 ** Returns tNFA_STATUS
212 **
213 *******************************************************************************/
nfa_dm_check_set_config(uint8_t tlv_list_len,uint8_t * p_tlv_list,bool app_init)214 tNFA_STATUS nfa_dm_check_set_config(uint8_t tlv_list_len, uint8_t* p_tlv_list,
215 bool app_init) {
216 uint8_t type, len, *p_value, *p_stored, max_len;
217 uint8_t xx = 0, updated_len = 0, *p_cur_len;
218 bool update;
219 tNFC_STATUS nfc_status;
220 uint32_t cur_bit;
221
222 DLOG_IF(INFO, nfc_debug_enabled) << __func__;
223
224 /* We only allow 32 pending SET_CONFIGs */
225 if (nfa_dm_cb.setcfg_pending_num >= NFA_DM_SETCONFIG_PENDING_MAX) {
226 LOG(ERROR) << StringPrintf(
227 "error: pending number of SET_CONFIG "
228 "exceeded");
229 return NFA_STATUS_FAILED;
230 }
231
232 while (tlv_list_len - xx >= 2) /* at least type and len */
233 {
234 update = false;
235 type = *(p_tlv_list + xx);
236 len = *(p_tlv_list + xx + 1);
237 p_value = p_tlv_list + xx + 2;
238 p_cur_len = nullptr;
239
240 switch (type) {
241 /*
242 ** Poll F Configuration
243 */
244 case NFC_PMID_PF_RC:
245 p_stored = nfa_dm_cb.params.pf_rc;
246 max_len = NCI_PARAM_LEN_PF_RC;
247 break;
248 case NFC_PMID_TOTAL_DURATION:
249 p_stored = nfa_dm_cb.params.total_duration;
250 max_len = NCI_PARAM_LEN_TOTAL_DURATION;
251 break;
252
253 /*
254 ** Listen A Configuration
255 */
256 case NFC_PMID_LA_BIT_FRAME_SDD:
257 p_stored = nfa_dm_cb.params.la_bit_frame_sdd;
258 max_len = NCI_PARAM_LEN_LA_BIT_FRAME_SDD;
259 p_cur_len = &nfa_dm_cb.params.la_bit_frame_sdd_len;
260 break;
261 case NFC_PMID_LA_PLATFORM_CONFIG:
262 p_stored = nfa_dm_cb.params.la_platform_config;
263 max_len = NCI_PARAM_LEN_LA_PLATFORM_CONFIG;
264 p_cur_len = &nfa_dm_cb.params.la_platform_config_len;
265 break;
266 case NFC_PMID_LA_SEL_INFO:
267 p_stored = nfa_dm_cb.params.la_sel_info;
268 max_len = NCI_PARAM_LEN_LA_SEL_INFO;
269 p_cur_len = &nfa_dm_cb.params.la_sel_info_len;
270 break;
271 case NFC_PMID_LA_NFCID1:
272 p_stored = nfa_dm_cb.params.la_nfcid1;
273 max_len = NCI_NFCID1_MAX_LEN;
274 p_cur_len = &nfa_dm_cb.params.la_nfcid1_len;
275 break;
276 case NFC_PMID_LA_HIST_BY:
277 p_stored = nfa_dm_cb.params.la_hist_by;
278 max_len = NCI_MAX_HIS_BYTES_LEN;
279 p_cur_len = &nfa_dm_cb.params.la_hist_by_len;
280 break;
281
282 /*
283 ** Listen B Configuration
284 */
285 case NFC_PMID_LB_SENSB_INFO:
286 p_stored = nfa_dm_cb.params.lb_sensb_info;
287 max_len = NCI_PARAM_LEN_LB_SENSB_INFO;
288 p_cur_len = &nfa_dm_cb.params.lb_sensb_info_len;
289 break;
290 case NFC_PMID_LB_NFCID0:
291 p_stored = nfa_dm_cb.params.lb_nfcid0;
292 max_len = NCI_PARAM_LEN_LB_NFCID0;
293 p_cur_len = &nfa_dm_cb.params.lb_nfcid0_len;
294 break;
295 case NFC_PMID_LB_APPDATA:
296 p_stored = nfa_dm_cb.params.lb_appdata;
297 max_len = NCI_PARAM_LEN_LB_APPDATA;
298 p_cur_len = &nfa_dm_cb.params.lb_appdata_len;
299 break;
300 case NFC_PMID_LB_ADC_FO:
301 p_stored = nfa_dm_cb.params.lb_adc_fo;
302 max_len = NCI_PARAM_LEN_LB_ADC_FO;
303 p_cur_len = &nfa_dm_cb.params.lb_adc_fo_len;
304 break;
305 case NFC_PMID_LB_H_INFO:
306 p_stored = nfa_dm_cb.params.lb_h_info;
307 max_len = NCI_MAX_ATTRIB_LEN;
308 p_cur_len = &nfa_dm_cb.params.lb_h_info_len;
309 break;
310
311 /*
312 ** Listen F Configuration
313 */
314 case NFC_PMID_LF_PROTOCOL:
315 p_stored = nfa_dm_cb.params.lf_protocol;
316 max_len = NCI_PARAM_LEN_LF_PROTOCOL;
317 p_cur_len = &nfa_dm_cb.params.lf_protocol_len;
318 break;
319 case NFC_PMID_LF_T3T_FLAGS2:
320 p_stored = nfa_dm_cb.params.lf_t3t_flags2;
321 max_len = NCI_PARAM_LEN_LF_T3T_FLAGS2;
322 p_cur_len = &nfa_dm_cb.params.lf_t3t_flags2_len;
323 break;
324 case NFC_PMID_LF_T3T_PMM:
325 p_stored = nfa_dm_cb.params.lf_t3t_pmm;
326 max_len = NCI_PARAM_LEN_LF_T3T_PMM;
327 break;
328
329 /*
330 ** ISO-DEP and NFC-DEP Configuration
331 */
332 case NFC_PMID_FWI:
333 p_stored = nfa_dm_cb.params.fwi;
334 max_len = NCI_PARAM_LEN_FWI;
335 break;
336 case NFC_PMID_WT:
337 p_stored = nfa_dm_cb.params.wt;
338 max_len = NCI_PARAM_LEN_WT;
339 break;
340 case NFC_PMID_ATR_REQ_GEN_BYTES:
341 p_stored = nfa_dm_cb.params.atr_req_gen_bytes;
342 max_len = NCI_MAX_GEN_BYTES_LEN;
343 p_cur_len = &nfa_dm_cb.params.atr_req_gen_bytes_len;
344 break;
345 case NFC_PMID_ATR_RES_GEN_BYTES:
346 p_stored = nfa_dm_cb.params.atr_res_gen_bytes;
347 max_len = NCI_MAX_GEN_BYTES_LEN;
348 p_cur_len = &nfa_dm_cb.params.atr_res_gen_bytes_len;
349 break;
350 default:
351 /*
352 ** Listen F Configuration
353 */
354 if ((type >= NFC_PMID_LF_T3T_ID1) &&
355 (type < NFC_PMID_LF_T3T_ID1 + NFA_CE_LISTEN_INFO_MAX)) {
356 p_stored = nfa_dm_cb.params.lf_t3t_id[type - NFC_PMID_LF_T3T_ID1];
357 max_len = NCI_PARAM_LEN_LF_T3T_ID(NFC_GetNCIVersion());
358 } else {
359 /* we don't stored this config items */
360 update = true;
361 p_stored = nullptr;
362 }
363 break;
364 }
365
366 if ((p_stored) && (len <= max_len)) {
367 if (p_cur_len) {
368 if (*p_cur_len != len) {
369 *p_cur_len = len;
370 update = true;
371 } else if (memcmp(p_value, p_stored, len)) {
372 update = true;
373 } else if (appl_dta_mode_flag && app_init) {
374 /* In DTA mode, config update is forced so that length of config
375 * params (i.e update_len) is updated accordingly even for setconfig
376 * have only one tlv */
377 update = true;
378 }
379 } else if (len == max_len) /* fixed length */
380 {
381 if (memcmp(p_value, p_stored, len)) {
382 update = true;
383 } else if (appl_dta_mode_flag && app_init) {
384 /* In DTA mode, config update is forced so that length of config
385 * params (i.e update_len) is updated accordingly even for setconfig
386 * have only one tlv */
387 update = true;
388 }
389 }
390 }
391
392 if (update) {
393 /* we don't store this type */
394 if (p_stored) {
395 memcpy(p_stored, p_value, len);
396 }
397
398 /* If need to change TLV in the original list. (Do not modify list if
399 * app_init) */
400 if ((updated_len != xx) && (!app_init)) {
401 memcpy(p_tlv_list + updated_len, p_tlv_list + xx, (len + 2));
402 }
403 updated_len += (len + 2);
404 }
405 xx += len + 2; /* move to next TLV */
406 }
407
408 /* If any TVLs to update, or if the SetConfig was initiated by the
409 * application, then send the SET_CONFIG command */
410 if (((updated_len || app_init) &&
411 (appl_dta_mode_flag == 0x00 ||
412 (nfa_dm_cb.eDtaMode & 0x0F) == NFA_DTA_HCEF_MODE)) ||
413 (appl_dta_mode_flag && app_init)) {
414 nfc_status = NFC_SetConfig(updated_len, p_tlv_list);
415
416 if (nfc_status == NFC_STATUS_OK) {
417 if ((nfa_dm_cb.eDtaMode & 0x0F) == NFA_DTA_HCEF_MODE) {
418 nfa_dm_cb.eDtaMode &= ~NFA_DTA_HCEF_MODE;
419 nfa_dm_cb.eDtaMode |= NFA_DTA_DEFAULT_MODE;
420 }
421 /* Keep track of whether we will need to notify NFA_DM_SET_CONFIG_EVT on
422 * NFC_SET_CONFIG_REVT */
423
424 /* Get the next available bit offset for this setconfig (based on how many
425 * SetConfigs are outstanding) */
426 cur_bit = (uint32_t)(1 << nfa_dm_cb.setcfg_pending_num);
427
428 /* If setconfig is due to NFA_SetConfig: then set the bit
429 * (NFA_DM_SET_CONFIG_EVT needed on NFC_SET_CONFIG_REVT) */
430 if (app_init) {
431 nfa_dm_cb.setcfg_pending_mask |= cur_bit;
432 }
433 /* Otherwise setconfig is internal: clear the bit (NFA_DM_SET_CONFIG_EVT
434 not needed on NFC_SET_CONFIG_REVT) */
435 else {
436 nfa_dm_cb.setcfg_pending_mask &= ~cur_bit;
437 }
438
439 /* Increment setcfg_pending counter */
440 nfa_dm_cb.setcfg_pending_num++;
441 }
442 return (nfc_status);
443
444 } else {
445 return NFA_STATUS_OK;
446 }
447 }
448
449 /*******************************************************************************
450 **
451 ** Function nfa_dm_nfc_revt_2_str
452 **
453 ** Description convert nfc revt to string
454 **
455 *******************************************************************************/
nfa_dm_evt_2_str(uint16_t event)456 static std::string nfa_dm_evt_2_str(uint16_t event) {
457 switch (NFA_SYS_EVT_START(NFA_ID_DM) | event) {
458 case NFA_DM_API_ENABLE_EVT:
459 return "NFA_DM_API_ENABLE_EVT";
460 case NFA_DM_API_DISABLE_EVT:
461 return "NFA_DM_API_DISABLE_EVT";
462 case NFA_DM_API_SET_CONFIG_EVT:
463 return "NFA_DM_API_SET_CONFIG_EVT";
464 case NFA_DM_API_GET_CONFIG_EVT:
465 return "NFA_DM_API_GET_CONFIG_EVT";
466 case NFA_DM_API_REQUEST_EXCL_RF_CTRL_EVT:
467 return "NFA_DM_API_REQUEST_EXCL_RF_CTRL_EVT";
468 case NFA_DM_API_RELEASE_EXCL_RF_CTRL_EVT:
469 return "NFA_DM_API_RELEASE_EXCL_RF_CTRL_EVT";
470 case NFA_DM_API_ENABLE_POLLING_EVT:
471 return "NFA_DM_API_ENABLE_POLLING_EVT";
472 case NFA_DM_API_DISABLE_POLLING_EVT:
473 return "NFA_DM_API_DISABLE_POLLING_EVT";
474 case NFA_DM_API_ENABLE_LISTENING_EVT:
475 return "NFA_DM_API_ENABLE_LISTENING_EVT";
476 case NFA_DM_API_DISABLE_LISTENING_EVT:
477 return "NFA_DM_API_DISABLE_LISTENING_EVT";
478 case NFA_DM_API_PAUSE_P2P_EVT:
479 return "NFA_DM_API_PAUSE_P2P_EVT";
480 case NFA_DM_API_RESUME_P2P_EVT:
481 return "NFA_DM_API_RESUME_P2P_EVT";
482 case NFA_DM_API_RAW_FRAME_EVT:
483 return "NFA_DM_API_RAW_FRAME_EVT";
484 case NFA_DM_API_SET_P2P_LISTEN_TECH_EVT:
485 return "NFA_DM_API_SET_P2P_LISTEN_TECH_EVT";
486 case NFA_DM_API_START_RF_DISCOVERY_EVT:
487 return "NFA_DM_API_START_RF_DISCOVERY_EVT";
488 case NFA_DM_API_STOP_RF_DISCOVERY_EVT:
489 return "NFA_DM_API_STOP_RF_DISCOVERY_EVT";
490 case NFA_DM_API_SET_RF_DISC_DURATION_EVT:
491 return "NFA_DM_API_SET_RF_DISC_DURATION_EVT";
492 case NFA_DM_API_SELECT_EVT:
493 return "NFA_DM_API_SELECT_EVT";
494 case NFA_DM_API_UPDATE_RF_PARAMS_EVT:
495 return "NFA_DM_API_UPDATE_RF_PARAMS_EVT";
496 case NFA_DM_API_DEACTIVATE_EVT:
497 return "NFA_DM_API_DEACTIVATE_EVT";
498 case NFA_DM_API_POWER_OFF_SLEEP_EVT:
499 return "NFA_DM_API_POWER_OFF_SLEEP_EVT";
500 case NFA_DM_API_REG_NDEF_HDLR_EVT:
501 return "NFA_DM_API_REG_NDEF_HDLR_EVT";
502 case NFA_DM_API_DEREG_NDEF_HDLR_EVT:
503 return "NFA_DM_API_DEREG_NDEF_HDLR_EVT";
504 case NFA_DM_TIMEOUT_DISABLE_EVT:
505 return "NFA_DM_TIMEOUT_DISABLE_EVT";
506 case NFA_DM_API_SET_POWER_SUB_STATE_EVT:
507 return "NFA_DM_API_SET_POWER_SUB_STATE_EVT";
508 }
509
510 return "Unknown or Vendor Specific";
511 }
512