xref: /system/nfc/src/nfa/dm/nfa_dm_act.c

/******************************************************************************
 *
 *  Copyright (C) 2010-2014 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

/******************************************************************************
 *
 *  This file contains the action functions for device manager state
 *  machine.
 *
 ******************************************************************************/
#include <string.h>
#include "nci_hmsgs.h"
#include "nfa_api.h"
#include "nfa_ce_int.h"
#include "nfa_dm_int.h"
#include "nfa_p2p_int.h"
#include "nfa_rw_api.h"
#include "nfa_rw_int.h"
#include "nfa_sys.h"
#include "nfa_sys_int.h"
#include "nfc_api.h"

#if (NFC_NFCEE_INCLUDED == TRUE)
#include "nfa_ee_int.h"
#include "nfa_hci_int.h"
#endif

#if (NFA_SNEP_INCLUDED == TRUE)
#include "nfa_snep_int.h"
#endif

/* This is the timeout value to guarantee disable is performed within reasonable
 * amount of time */
#ifndef NFA_DM_DISABLE_TIMEOUT_VAL
#define NFA_DM_DISABLE_TIMEOUT_VAL 1000
#endif

static void nfa_dm_set_init_nci_params(void);
static tNFA_STATUS nfa_dm_start_polling(void);
static bool nfa_dm_deactivate_polling(void);
static void nfa_dm_excl_disc_cback(tNFA_DM_RF_DISC_EVT event,
                                   tNFC_DISCOVER* p_data);
static void nfa_dm_poll_disc_cback(tNFA_DM_RF_DISC_EVT event,
                                   tNFC_DISCOVER* p_data);

/*******************************************************************************
**
** Function         nfa_dm_module_init_cback
**
** Description      Processing initialization complete event from sub-modules
**
** Returns          None
**
*******************************************************************************/
static void nfa_dm_module_init_cback(void) {
  tNFA_DM_CBACK_DATA dm_cback_data;

  nfa_dm_cb.flags &= ~NFA_DM_FLAGS_ENABLE_EVT_PEND;

  /* All subsystem are initialized */
  dm_cback_data.status = NFA_STATUS_OK;
  (*nfa_dm_cb.p_dm_cback)(NFA_DM_ENABLE_EVT, &dm_cback_data);
}

/*******************************************************************************
**
** Function         nfa_dm_nfcc_power_mode_proc_complete_cback
**
** Description      Processing complete of processing NFCC power state change
**                  from all sub-modules
**
** Returns          None
**
*******************************************************************************/
static void nfa_dm_nfcc_power_mode_proc_complete_cback(void) {
  tNFA_DM_PWR_MODE_CHANGE power_mode_change;

  NFA_TRACE_DEBUG1(
      "nfa_dm_nfcc_power_mode_proc_complete_cback () nfcc_pwr_mode = 0x%x",
      nfa_dm_cb.nfcc_pwr_mode);

  /* if NFCC power state is change to full power */
  if (nfa_dm_cb.nfcc_pwr_mode != NFA_DM_PWR_MODE_OFF_SLEEP) {
    nfa_dm_cb.flags &= ~NFA_DM_FLAGS_NFCC_IS_RESTORING;

    /* reconfigure BRCM NFCC */
    nfa_dm_disc_sm_execute(NFA_DM_RF_DISCOVER_CMD, NULL);
  }

  nfa_dm_cb.flags &= ~NFA_DM_FLAGS_SETTING_PWR_MODE;

  power_mode_change.status = NFA_STATUS_OK;
  power_mode_change.power_mode = nfa_dm_cb.nfcc_pwr_mode;
  (*nfa_dm_cb.p_dm_cback)(NFA_DM_PWR_MODE_CHANGE_EVT,
                          (tNFA_DM_CBACK_DATA*)&power_mode_change);
}
/*******************************************************************************
**
** Function         nfa_dm_sys_enable
**
** Description      This function on enable
**
** Returns          void
**
*******************************************************************************/
void nfa_dm_sys_enable(void) { nfa_dm_set_init_nci_params(); }

/*******************************************************************************
**
** Function         nfa_dm_set_init_nci_params
**
** Description      Set initial NCI configuration parameters
**
** Returns          void
**
*******************************************************************************/
static void nfa_dm_set_init_nci_params(void) {
  uint8_t xx;

  /* set NCI default value if other than zero */

  /* LF_T3T_IDENTIFIERS_1/2/.../16 */
  for (xx = 0; xx < NFA_CE_LISTEN_INFO_MAX; xx++) {
    nfa_dm_cb.params.lf_t3t_id[xx][0] = 0xFF;
    nfa_dm_cb.params.lf_t3t_id[xx][1] = 0xFF;
    nfa_dm_cb.params.lf_t3t_id[xx][2] = 0x02;
    nfa_dm_cb.params.lf_t3t_id[xx][3] = 0xFE;
  }

  /* LF_T3T_PMM */
  for (xx = 0; xx < NCI_PARAM_LEN_LF_T3T_PMM; xx++) {
    nfa_dm_cb.params.lf_t3t_pmm[xx] = 0xFF;
  }

  /* LF_T3T_FLAGS:
  ** DH needs to set this configuration, even if default value (not listening)
  ** is used, to let NFCC know of intention (not listening) of DH.
  */

  /* FWI */
  nfa_dm_cb.params.fwi[0] = 0x04;

  /* WT */
  nfa_dm_cb.params.wt[0] = 14;

  /* Set CE default configuration */
  if (p_nfa_dm_ce_cfg[0]) {
    nfa_dm_check_set_config(p_nfa_dm_ce_cfg[0], &p_nfa_dm_ce_cfg[1], false);
  }

  /* Set optional general default configuration */
  if (p_nfa_dm_gen_cfg && p_nfa_dm_gen_cfg[0]) {
    nfa_dm_check_set_config(p_nfa_dm_gen_cfg[0], &p_nfa_dm_gen_cfg[1], false);
  }

  if (p_nfa_dm_interface_mapping && nfa_dm_num_dm_interface_mapping) {
    NFC_DiscoveryMap(nfa_dm_num_dm_interface_mapping,
                     p_nfa_dm_interface_mapping, NULL);
  }
}

/*******************************************************************************
**
** Function         nfa_dm_proc_nfcc_power_mode
**
** Description      Processing NFCC power mode changes
**
** Returns          None
**
*******************************************************************************/
void nfa_dm_proc_nfcc_power_mode(uint8_t nfcc_power_mode) {
  NFA_TRACE_DEBUG1("nfa_dm_proc_nfcc_power_mode (): nfcc_power_mode=%d",
                   nfcc_power_mode);

  /* if NFCC power mode is change to full power */
  if (nfcc_power_mode == NFA_DM_PWR_MODE_FULL) {
    memset(&nfa_dm_cb.params, 0x00, sizeof(tNFA_DM_PARAMS));
    NFA_TRACE_DEBUG2("setcfg_pending_mask=0x%x, setcfg_pending_num=%d",
                     nfa_dm_cb.setcfg_pending_mask,
                     nfa_dm_cb.setcfg_pending_num);
    nfa_dm_cb.setcfg_pending_mask = 0;
    nfa_dm_cb.setcfg_pending_num = 0;

    nfa_dm_set_init_nci_params();
    nfa_dm_cb.flags &= ~NFA_DM_FLAGS_POWER_OFF_SLEEP;
  } else if (nfcc_power_mode == NFA_DM_PWR_MODE_OFF_SLEEP) {
    nfa_dm_cb.flags |= NFA_DM_FLAGS_POWER_OFF_SLEEP;
  }

  nfa_sys_cback_notify_nfcc_power_mode_proc_complete(NFA_ID_DM);
}

/*******************************************************************************
**
** Function         nfa_dm_disable_event
**
** Description      report disable event
**
** Returns          void
**
*******************************************************************************/
static void nfa_dm_disable_event(void) {
  /* Deregister DM from sys */
  nfa_sys_deregister(NFA_ID_DM);

  /* Notify app */
  nfa_dm_cb.flags &=
      ~(NFA_DM_FLAGS_DM_IS_ACTIVE | NFA_DM_FLAGS_DM_DISABLING_NFC |
        NFA_DM_FLAGS_ENABLE_EVT_PEND);
  (*nfa_dm_cb.p_dm_cback)(NFA_DM_DISABLE_EVT, NULL);
}

/*******************************************************************************
**
** Function         nfa_dm_nfc_response_cback
**
** Description      Call DM event hanlder with NFC response callback data
**
** Returns          void
**
*******************************************************************************/
static void nfa_dm_nfc_response_cback(tNFC_RESPONSE_EVT event,
                                      tNFC_RESPONSE* p_data) {
  tNFA_DM_CBACK_DATA dm_cback_data;
  tNFA_GET_CONFIG* p_nfa_get_confg;
  tNFA_CONN_EVT_DATA conn_evt;
  uint8_t dm_cback_evt;
  uint8_t max_ee = 0;

#if (BT_TRACE_VERBOSE == TRUE)
  NFA_TRACE_DEBUG2("nfa_dm_nfc_response_cback () %s(0x%x)",
                   nfa_dm_nfc_revt_2_str(event), event);
#else
  NFA_TRACE_DEBUG1("nfa_dm_nfc_response_cback () event=0x%x", event);
#endif

  switch (event) {
    case NFC_ENABLE_REVT: /* 0  Enable event */

      /* NFC stack enabled. Enable nfa sub-systems */
      if (p_data->enable.status == NFC_STATUS_OK) {
        if (nfa_ee_max_ee_cfg != 0) {
          if (nfa_dm_cb.get_max_ee) {
            max_ee = nfa_dm_cb.get_max_ee();
            if (max_ee) {
              nfa_ee_max_ee_cfg = max_ee;
            }
          }
        }
        /* Initialize NFA subsystems */
        nfa_sys_enable_subsystems();
      } else if (nfa_dm_cb.flags & NFA_DM_FLAGS_ENABLE_EVT_PEND) {
        /* Notify app */
        nfa_dm_cb.flags &=
            ~(NFA_DM_FLAGS_ENABLE_EVT_PEND | NFA_DM_FLAGS_DM_IS_ACTIVE);
        dm_cback_data.status = p_data->enable.status;
        (*nfa_dm_cb.p_dm_cback)(NFA_DM_ENABLE_EVT, &dm_cback_data);
      }
      break;

    case NFC_DISABLE_REVT: /* 1  Disable event */
      nfa_dm_disable_event();
      break;

    case NFC_SET_CONFIG_REVT: /* 2  Set Config Response */
      /* If this setconfig was due to NFA_SetConfig, then notify the app */
      /* lsb=whether last NCI_SET_CONFIG was due to NFA_SetConfig */
      if (nfa_dm_cb.setcfg_pending_mask & 1) {
        dm_cback_data.set_config.status = p_data->set_config.status;
        dm_cback_data.set_config.num_param_id = p_data->set_config.num_param_id;
        memcpy(dm_cback_data.set_config.param_ids, p_data->set_config.param_ids,
               p_data->set_config.num_param_id);
        (*nfa_dm_cb.p_dm_cback)(NFA_DM_SET_CONFIG_EVT, &dm_cback_data);
      }

      /* Update the pending mask */
      if (nfa_dm_cb.setcfg_pending_num > 0) {
        nfa_dm_cb.setcfg_pending_mask >>= 1;
        nfa_dm_cb.setcfg_pending_num--;
      } else {
        /* This should not occur (means we got a SET_CONFIG_NTF that's
         * unaccounted for */
        NFA_TRACE_ERROR0("NFA received unexpected NFC_SET_CONFIG_REVT");
      }
      break;

    case NFC_GET_CONFIG_REVT: /* 3  Get Config Response */
      if (p_data->get_config.status == NFC_STATUS_OK) {
        p_nfa_get_confg = (tNFA_GET_CONFIG*)GKI_getbuf(
            (uint16_t)(sizeof(tNFA_GET_CONFIG) + p_data->get_config.tlv_size));
        if (p_nfa_get_confg != NULL) {
          p_nfa_get_confg->status = NFA_STATUS_OK;
          p_nfa_get_confg->tlv_size = p_data->get_config.tlv_size;
          memcpy(p_nfa_get_confg->param_tlvs, p_data->get_config.p_param_tlvs,
                 p_data->get_config.tlv_size);
          (*nfa_dm_cb.p_dm_cback)(NFA_DM_GET_CONFIG_EVT,
                                  (tNFA_DM_CBACK_DATA*)p_nfa_get_confg);

          GKI_freebuf(p_nfa_get_confg);
          return;
        } else {
          NFA_TRACE_DEBUG0(
              "nfa_dm_nfc_response_cback unable to allocate buffer");
        }
      }

      /* Return result of getconfig to the app */
      dm_cback_data.get_config.status = NFA_STATUS_FAILED;
      (*nfa_dm_cb.p_dm_cback)(NFA_DM_GET_CONFIG_EVT, &dm_cback_data);
      break;

#if (NFC_NFCEE_INCLUDED == TRUE)
    case NFC_NFCEE_DISCOVER_REVT: /* NFCEE Discover response */
    case NFC_NFCEE_INFO_REVT:     /* NFCEE Discover Notification */
    case NFC_EE_ACTION_REVT:      /* EE Action notification */
    case NFC_NFCEE_MODE_SET_REVT: /* NFCEE Mode Set response */
    case NFC_SET_ROUTING_REVT:    /* Configure Routing response */
      nfa_ee_proc_evt(event, p_data);
      break;

    case NFC_EE_DISCOVER_REQ_REVT: /* EE Discover Req notification */
      if (nfa_dm_is_active() &&
          (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_DISCOVERY)) {
        nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_IDLE);
      }
      nfa_ee_proc_evt(event, p_data);
      break;

    case NFC_GET_ROUTING_REVT: /* Retrieve Routing response */
      break;
#endif

    case NFC_RF_FIELD_REVT: /* RF Field information            */
      dm_cback_data.rf_field.status = NFA_STATUS_OK;
      dm_cback_data.rf_field.rf_field_status = p_data->rf_field.rf_field;
      (*nfa_dm_cb.p_dm_cback)(NFA_DM_RF_FIELD_EVT, &dm_cback_data);
      break;

    case NFC_GEN_ERROR_REVT: /* generic error command or notification */
      break;

    case NFC_NFCC_RESTART_REVT: /* NFCC has been re-initialized */

      if (p_data->status == NFC_STATUS_OK) {
        nfa_dm_cb.nfcc_pwr_mode = NFA_DM_PWR_MODE_FULL;
        nfa_dm_cb.flags |= NFA_DM_FLAGS_NFCC_IS_RESTORING;

        /* NFCC will start from IDLE when turned on again */
        nfa_dm_cb.disc_cb.disc_flags &= ~NFA_DM_DISC_FLAGS_W4_RSP;
        nfa_dm_cb.disc_cb.disc_flags &= ~NFA_DM_DISC_FLAGS_W4_NTF;
        nfa_dm_cb.disc_cb.disc_state = NFA_DM_RFST_IDLE;
      } else {
        nfa_dm_cb.nfcc_pwr_mode = NFA_DM_PWR_MODE_OFF_SLEEP;
      }
      /* Notify NFA submodules change of NFCC power mode */
      nfa_sys_cback_reg_nfcc_power_mode_proc_complete(
          nfa_dm_nfcc_power_mode_proc_complete_cback);
      nfa_sys_notify_nfcc_power_mode(nfa_dm_cb.nfcc_pwr_mode);
      break;

    case NFC_NFCC_TIMEOUT_REVT:
    case NFC_NFCC_TRANSPORT_ERR_REVT:
      NFA_TRACE_DEBUG1("flags:0x%08x", nfa_dm_cb.flags);
      dm_cback_evt = (event == NFC_NFCC_TIMEOUT_REVT)
                         ? NFA_DM_NFCC_TIMEOUT_EVT
                         : NFA_DM_NFCC_TRANSPORT_ERR_EVT;
      (*nfa_dm_cb.p_dm_cback)(dm_cback_evt, NULL);
      break;

    case NFC_NFCC_POWER_OFF_REVT:
      nfa_dm_cb.nfcc_pwr_mode = NFA_DM_PWR_MODE_OFF_SLEEP;

      /* Notify NFA submodules change of NFCC power mode */
      nfa_sys_cback_reg_nfcc_power_mode_proc_complete(
          nfa_dm_nfcc_power_mode_proc_complete_cback);
      nfa_sys_notify_nfcc_power_mode(NFA_DM_PWR_MODE_OFF_SLEEP);
      break;

    case NFC_RF_COMM_PARAMS_UPDATE_REVT:
      conn_evt.status = p_data->status;
      nfa_dm_conn_cback_event_notify(NFA_UPDATE_RF_PARAM_RESULT_EVT, &conn_evt);
      break;

    default:
      break;
  }
}

/*******************************************************************************
**
** Function         nfa_dm_enable
**
** Description      Initialises the NFC device manager
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_enable(tNFA_DM_MSG* p_data) {
  tNFA_DM_CBACK_DATA dm_cback_data;
  NFA_TRACE_DEBUG0("nfa_dm_enable ()");

  /* Check if NFA is already enabled */
  if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_DM_IS_ACTIVE)) {
    /* Initialize BRCM control block, it musb be called before setting any flags
     */
    nfa_dm_cb.flags |=
        (NFA_DM_FLAGS_DM_IS_ACTIVE | NFA_DM_FLAGS_ENABLE_EVT_PEND);
    nfa_sys_cback_reg_enable_complete(nfa_dm_module_init_cback);

    /* Store Enable parameters */
    nfa_dm_cb.p_dm_cback = p_data->enable.p_dm_cback;
    nfa_dm_cb.p_conn_cback = p_data->enable.p_conn_cback;

    /* Enable NFC stack */
    NFC_Enable(nfa_dm_nfc_response_cback);
  } else {
    NFA_TRACE_ERROR0("nfa_dm_enable: ERROR ALREADY ENABLED.");
    dm_cback_data.status = NFA_STATUS_ALREADY_STARTED;
    (*(p_data->enable.p_dm_cback))(NFA_DM_ENABLE_EVT, &dm_cback_data);
  }

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_disable
**
** Description      Disables the NFC device manager
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_disable(tNFA_DM_MSG* p_data) {
  tNFC_DEACT_TYPE deactivate_type = NFA_DEACTIVATE_TYPE_IDLE;

  NFA_TRACE_DEBUG1("nfa_dm_disable (): graceful:%d", p_data->disable.graceful);

  if (p_data->disable.graceful) {
    /* if RF discovery is enabled */
    if (nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_ENABLED) {
      nfa_dm_cb.disc_cb.disc_flags &= ~NFA_DM_DISC_FLAGS_ENABLED;

      if (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_IDLE) {
        /* if waiting RSP in idle state */
        if (nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_W4_RSP) {
          nfa_dm_cb.disc_cb.disc_flags |= NFA_DM_DISC_FLAGS_DISABLING;
        }
      } else {
        nfa_dm_cb.disc_cb.disc_flags |= NFA_DM_DISC_FLAGS_DISABLING;
        nfa_dm_disc_sm_execute(NFA_DM_RF_DEACTIVATE_CMD,
                               (tNFA_DM_RF_DISC_DATA*)&deactivate_type);
        if ((nfa_dm_cb.disc_cb.disc_flags &
             (NFA_DM_DISC_FLAGS_W4_RSP | NFA_DM_DISC_FLAGS_W4_NTF)) == 0) {
          /* not waiting to deactivate, clear the flag now */
          nfa_dm_cb.disc_cb.disc_flags &= ~NFA_DM_DISC_FLAGS_DISABLING;
        }
      }
    }
    /* Start timeout for graceful shutdown. If timer expires, then force an
     * ungraceful shutdown */
    nfa_sys_start_timer(&nfa_dm_cb.tle, NFA_DM_TIMEOUT_DISABLE_EVT,
                        NFA_DM_DISABLE_TIMEOUT_VAL);
  }

  /* Disable all subsystems other than DM (DM will be disabled after all  */
  /* the other subsystem have been disabled)                              */
  nfa_sys_disable_subsystems(p_data->disable.graceful);
  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_disable_complete
**
** Description      Called when all NFA subsytems are disabled.
**
**                  NFC core stack can now be disabled.
**
** Returns          void
**
*******************************************************************************/
void nfa_dm_disable_complete(void) {
  NFA_TRACE_DEBUG0("nfa_dm_disable_complete ()");

  if ((nfa_dm_cb.flags & NFA_DM_FLAGS_DM_DISABLING_NFC) == 0) {
    NFA_TRACE_DEBUG0(
        "nfa_dm_disable_complete (): proceeding with nfc core shutdown.");

    nfa_dm_cb.flags |= NFA_DM_FLAGS_DM_DISABLING_NFC;

    nfa_sys_stop_timer(&nfa_dm_cb.tle);

    /* Free all buffers for NDEF handlers */
    nfa_dm_ndef_dereg_all();

    /* Disable nfc core stack */
    NFC_Disable();
  }
}

/*******************************************************************************
**
** Function         nfa_dm_set_config
**
** Description      Process set config command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_set_config(tNFA_DM_MSG* p_data) {
  tNFC_STATUS status;
  uint8_t buff[255];
  uint8_t* p = buff;

  tNFA_DM_CBACK_DATA dm_cback_data;

  if (p_data->setconfig.length + 2 > 255) {
    /* Total length of TLV must be less than 256 (1 byte) */
    status = NFC_STATUS_FAILED;
  } else {
    UINT8_TO_STREAM(p, p_data->setconfig.param_id);
    UINT8_TO_STREAM(p, p_data->setconfig.length);
    ARRAY_TO_STREAM(p, p_data->setconfig.p_data, p_data->setconfig.length)
    status = nfa_dm_check_set_config((uint8_t)(p_data->setconfig.length + 2),
                                     buff, true);
  }

  if (status != NFC_STATUS_OK) {
    dm_cback_data.set_config.status = NFA_STATUS_INVALID_PARAM;
    (*nfa_dm_cb.p_dm_cback)(NFA_DM_SET_CONFIG_EVT, &dm_cback_data);
  }

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_get_config
**
** Description      Process get config command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_get_config(tNFA_DM_MSG* p_data) {
  NFC_GetConfig(p_data->getconfig.num_ids, p_data->getconfig.p_pmids);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_conn_cback_event_notify
**
** Description      Notify application of CONN_CBACK event, using appropriate
**                  callback
**
** Returns          nothing
**
*******************************************************************************/
void nfa_dm_conn_cback_event_notify(uint8_t event, tNFA_CONN_EVT_DATA* p_data) {
  if (nfa_dm_cb.flags & NFA_DM_FLAGS_EXCL_RF_ACTIVE) {
    /* Use exclusive RF mode callback */
    if (nfa_dm_cb.p_excl_conn_cback)
      (*nfa_dm_cb.p_excl_conn_cback)(event, p_data);
  } else {
    (*nfa_dm_cb.p_conn_cback)(event, p_data);
  }
}

/*******************************************************************************
**
** Function         nfa_dm_rel_excl_rf_control_and_notify
**
** Description      Stop exclusive RF control and notify app of
**                  NFA_EXCLUSIVE_RF_CONTROL_STOPPED_EVT
**
** Returns          void
**
*******************************************************************************/
void nfa_dm_rel_excl_rf_control_and_notify(void) {
  tNFA_CONN_EVT_DATA conn_evt;

  NFA_TRACE_DEBUG0("nfa_dm_rel_excl_rf_control_and_notify ()");

  /* Exclusive RF control stopped. Notify app */
  nfa_dm_cb.flags &= ~NFA_DM_FLAGS_EXCL_RF_ACTIVE;

  /* Stop exclusive RF discovery for exclusive RF mode */
  nfa_dm_stop_excl_discovery();

  /* Notify app that exclusive RF control has stopped */
  conn_evt.status = NFA_STATUS_OK;
  (*nfa_dm_cb.p_excl_conn_cback)(NFA_EXCLUSIVE_RF_CONTROL_STOPPED_EVT,
                                 &conn_evt);
  nfa_dm_cb.p_excl_conn_cback = NULL;
  nfa_dm_cb.p_excl_ndef_cback = NULL;
}

/*******************************************************************************
**
** Function         nfa_dm_act_request_excl_rf_ctrl
**
** Description      Request exclusive RF control
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_request_excl_rf_ctrl(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA conn_evt;

  NFA_TRACE_DEBUG0("nfa_dm_act_request_excl_rf_ctrl ()");

  if (!nfa_dm_cb.p_excl_conn_cback) {
    if (nfa_dm_cb.disc_cb.disc_state != NFA_DM_RFST_IDLE) {
      conn_evt.status = NFA_STATUS_FAILED;
      (*p_data->req_excl_rf_ctrl.p_conn_cback)(
          NFA_EXCLUSIVE_RF_CONTROL_STARTED_EVT, &conn_evt);
      return true;
    }

    /* Store callbacks */
    nfa_dm_cb.p_excl_conn_cback = p_data->req_excl_rf_ctrl.p_conn_cback;
    nfa_dm_cb.p_excl_ndef_cback = p_data->req_excl_rf_ctrl.p_ndef_cback;

    nfa_dm_cb.flags |= NFA_DM_FLAGS_EXCL_RF_ACTIVE;

    /* start exclusive RF discovery */
    nfa_dm_start_excl_discovery(p_data->req_excl_rf_ctrl.poll_mask,
                                &p_data->req_excl_rf_ctrl.listen_cfg,
                                nfa_dm_excl_disc_cback);
  } else {
    NFA_TRACE_ERROR0("Exclusive rf control already requested");

    conn_evt.status = NFA_STATUS_FAILED;
    (*p_data->req_excl_rf_ctrl.p_conn_cback)(
        NFA_EXCLUSIVE_RF_CONTROL_STARTED_EVT, &conn_evt);
  }

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_release_excl_rf_ctrl
**
** Description      Release exclusive RF control
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_release_excl_rf_ctrl(tNFA_DM_MSG* p_data) {
  NFA_TRACE_DEBUG0("nfa_dm_act_release_excl_rf_ctrl ()");

  /* nfa_dm_rel_excl_rf_control_and_notify() is called when discovery state goes
   * IDLE */
  nfa_dm_cb.disc_cb.disc_flags |= NFA_DM_DISC_FLAGS_STOPPING;

  /* if discover command has been sent in IDLE state and waiting for response
  ** then just wait for responose. Otherwise initiate deactivating.
  */
  if (!((nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_IDLE) &&
        (nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_W4_RSP))) {
    nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_IDLE);
  }

  if (nfa_dm_cb.disc_cb.kovio_tle.in_use)
    nfa_sys_stop_timer(&nfa_dm_cb.disc_cb.kovio_tle);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_deactivate
**
** Description      Process deactivate command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_deactivate(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA conn_evt;
  tNFA_DEACTIVATE_TYPE deact_type;

  NFA_TRACE_DEBUG0("nfa_dm_act_deactivate ()");

  /* Always allow deactivate to IDLE */
  /* Do not allow deactivate to SLEEP for T1T,NFCDEP, ISO15693 */
  if ((p_data->deactivate.sleep_mode == false) ||
      ((nfa_dm_cb.disc_cb.activated_protocol != NFA_PROTOCOL_T1T) &&
       (nfa_dm_cb.disc_cb.activated_protocol != NFA_PROTOCOL_NFC_DEP) &&
       (nfa_dm_cb.disc_cb.activated_protocol != NFA_PROTOCOL_ISO15693) &&
       (nfa_dm_cb.disc_cb.activated_protocol != NFC_PROTOCOL_KOVIO))) {
    deact_type = NFA_DEACTIVATE_TYPE_DISCOVERY;
    if (p_data->deactivate.sleep_mode) {
      if (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_W4_HOST_SELECT) {
        /* Deactivate to sleep mode not allowed in this state. */
        deact_type = NFA_DEACTIVATE_TYPE_IDLE;
      } else if (nfa_dm_cb.disc_cb.disc_state != NFA_DM_RFST_LISTEN_SLEEP) {
        deact_type = NFA_DEACTIVATE_TYPE_SLEEP;
      }
    }
    if (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_W4_ALL_DISCOVERIES) {
      /* Only deactivate to IDLE is allowed in this state. */
      deact_type = NFA_DEACTIVATE_TYPE_IDLE;
    }

    if ((nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_NFC_DEP) &&
        ((nfa_dm_cb.flags & NFA_DM_FLAGS_EXCL_RF_ACTIVE) == 0x00)) {
      /* Exclusive RF control doesn't use NFA P2P */
      /* NFA P2P will deactivate NFC link after deactivating LLCP link */
      if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_P2P_PAUSED)) {
        nfa_p2p_deactivate_llcp();
      } else {
        nfa_dm_rf_deactivate(deact_type);
      }
      return true;
    } else {
      if (nfa_dm_rf_deactivate(deact_type) == NFA_STATUS_OK) {
        if (nfa_dm_cb.disc_cb.kovio_tle.in_use)
          nfa_sys_stop_timer(&nfa_dm_cb.disc_cb.kovio_tle);
        nfa_rw_stop_presence_check_timer();
        return true;
      }
    }
  }

  NFA_TRACE_ERROR0("nfa_dm_act_deactivate (): invalid protocol, mode or state");

  /* Notify error to application */
  conn_evt.status = NFA_STATUS_FAILED;
  nfa_dm_conn_cback_event_notify(NFA_DEACTIVATE_FAIL_EVT, &conn_evt);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_power_off_sleep
**
** Description      Process power off sleep mode request
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_power_off_sleep(tNFA_DM_MSG* p_data) {
  NFA_TRACE_DEBUG0("nfa_dm_act_power_off_sleep ()");

  NFC_SetPowerOffSleep((bool)(p_data->hdr.layer_specific));

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_reg_vsc
**
** Description      Process registers VSC callback
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_reg_vsc(tNFA_DM_MSG* p_data) {
  if (NFC_RegVSCback(p_data->reg_vsc.is_register, p_data->reg_vsc.p_cback) !=
      NFC_STATUS_OK) {
    NFA_TRACE_ERROR0("NFC_RegVSCback failed");
  }
  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_send_vsc
**
** Description      Send the NCI Vendor Specific command to the NCI command
**                  queue
**
** Returns          FALSE (message buffer is NOT freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_send_vsc(tNFA_DM_MSG* p_data) {
  NFC_HDR* p_cmd = (NFC_HDR*)p_data;

  p_cmd->offset = sizeof(tNFA_DM_API_SEND_VSC) - NFC_HDR_SIZE;
  p_cmd->len = p_data->send_vsc.cmd_params_len;
  NFC_SendVsCommand(p_data->send_vsc.oid, p_cmd, p_data->send_vsc.p_cback);

  /* Most dm action functions return TRUE, so nfa-sys frees the GKI buffer
   * carrying the message,
   * This action function re-use the GKI buffer to send the VSC, so the GKI
   * buffer can not be freed by nfa-sys */
  return false;
}

/*******************************************************************************
**
** Function         nfa_dm_start_polling
**
** Description      Start polling
**
** Returns          tNFA_STATUS
**
*******************************************************************************/
tNFA_STATUS nfa_dm_start_polling(void) {
  tNFA_STATUS status;
  tNFA_TECHNOLOGY_MASK poll_tech_mask;
  tNFA_DM_DISC_TECH_PROTO_MASK poll_disc_mask = 0;

  NFA_TRACE_DEBUG0("nfa_dm_start_polling ()");

  poll_tech_mask = nfa_dm_cb.poll_mask;

  /* start RF discovery with discovery callback */
  if (nfa_dm_cb.poll_disc_handle == NFA_HANDLE_INVALID) {
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_A) {
      poll_disc_mask |= NFA_DM_DISC_MASK_PA_T1T;
      poll_disc_mask |= NFA_DM_DISC_MASK_PA_T2T;
      poll_disc_mask |= NFA_DM_DISC_MASK_PA_ISO_DEP;
      poll_disc_mask |= NFA_DM_DISC_MASK_PA_NFC_DEP;
      poll_disc_mask |= NFA_DM_DISC_MASK_P_LEGACY;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_A_ACTIVE) {
      poll_disc_mask |= NFA_DM_DISC_MASK_PAA_NFC_DEP;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_B) {
      poll_disc_mask |= NFA_DM_DISC_MASK_PB_ISO_DEP;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_F) {
      poll_disc_mask |= NFA_DM_DISC_MASK_PF_T3T;
      poll_disc_mask |= NFA_DM_DISC_MASK_PF_NFC_DEP;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_F_ACTIVE) {
      poll_disc_mask |= NFA_DM_DISC_MASK_PFA_NFC_DEP;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_ISO15693) {
      poll_disc_mask |= NFA_DM_DISC_MASK_P_ISO15693;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_B_PRIME) {
      poll_disc_mask |= NFA_DM_DISC_MASK_P_B_PRIME;
    }
    if (poll_tech_mask & NFA_TECHNOLOGY_MASK_KOVIO) {
      poll_disc_mask |= NFA_DM_DISC_MASK_P_KOVIO;
    }

    nfa_dm_cb.poll_disc_handle = nfa_dm_add_rf_discover(
        poll_disc_mask, NFA_DM_DISC_HOST_ID_DH, nfa_dm_poll_disc_cback);

    if (nfa_dm_cb.poll_disc_handle != NFA_HANDLE_INVALID)
      status = NFA_STATUS_OK;
    else
      status = NFA_STATUS_FAILED;
  } else {
    status = NFA_STATUS_OK;
  }

  return (status);
}

/*******************************************************************************
**
** Function         nfa_dm_act_enable_polling
**
** Description      Process enable polling command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_enable_polling(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_enable_polling ()");

  if ((!(nfa_dm_cb.flags & NFA_DM_FLAGS_POLLING_ENABLED)) &&
      (!(nfa_dm_cb.flags & NFA_DM_FLAGS_EXCL_RF_ACTIVE))) {
    nfa_dm_cb.poll_mask = p_data->enable_poll.poll_mask;

    if (nfa_dm_start_polling() == NFA_STATUS_OK) {
      nfa_dm_cb.flags |= NFA_DM_FLAGS_POLLING_ENABLED;

      evt_data.status = NFA_STATUS_OK;
      nfa_dm_conn_cback_event_notify(NFA_POLL_ENABLED_EVT, &evt_data);
      return true;
    }
  } else {
    NFA_TRACE_ERROR0("nfa_dm_act_enable_polling (): already started");
  }

  /* send NFA_POLL_ENABLED_EVT with NFA_STATUS_FAILED */
  evt_data.status = NFA_STATUS_FAILED;
  nfa_dm_conn_cback_event_notify(NFA_POLL_ENABLED_EVT, &evt_data);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_deactivate_polling
**
** Description      Deactivate any polling state
**
** Returns          TRUE if need to wait for deactivation
**
*******************************************************************************/
static bool nfa_dm_deactivate_polling(void) {
  NFA_TRACE_DEBUG0("nfa_dm_deactivate_polling ()");

  if ((nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_W4_ALL_DISCOVERIES) ||
      (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_W4_HOST_SELECT)) {
    nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_IDLE);
    return false;
  } else if (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_POLL_ACTIVE) {
    if (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_NFC_DEP) {
      /* NFA P2P will deactivate NFC link after deactivating LLCP link */
      nfa_p2p_deactivate_llcp();
    } else {
      nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_IDLE);
    }
    return true;
  } else {
    return false;
  }
}

/*******************************************************************************
**
** Function         nfa_dm_act_disable_polling
**
** Description      Process disable polling command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_disable_polling(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_disable_polling ()");

  if (nfa_dm_cb.poll_disc_handle != NFA_HANDLE_INVALID) {
    nfa_dm_cb.flags &= ~NFA_DM_FLAGS_POLLING_ENABLED;

    if (nfa_dm_deactivate_polling() == false) {
      nfa_dm_delete_rf_discover(nfa_dm_cb.poll_disc_handle);
      nfa_dm_cb.poll_disc_handle = NFA_HANDLE_INVALID;

      evt_data.status = NFA_STATUS_OK;
      nfa_dm_conn_cback_event_notify(NFA_POLL_DISABLED_EVT, &evt_data);
    } else {
      nfa_dm_cb.flags |= NFA_DM_FLAGS_SEND_POLL_STOP_EVT;
    }
  } else {
    evt_data.status = NFA_STATUS_FAILED;
    nfa_dm_conn_cback_event_notify(NFA_POLL_DISABLED_EVT, &evt_data);
  }

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_enable_listening
**
** Description      Process enable listening command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_enable_listening(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_enable_listening ()");

  nfa_dm_cb.flags &= ~NFA_DM_FLAGS_LISTEN_DISABLED;
  evt_data.status = NFA_STATUS_OK;
  nfa_dm_conn_cback_event_notify(NFA_LISTEN_ENABLED_EVT, &evt_data);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_disable_listening
**
** Description      Process disable listening command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_disable_listening(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_disable_listening ()");

  nfa_dm_cb.flags |= NFA_DM_FLAGS_LISTEN_DISABLED;
  evt_data.status = NFA_STATUS_OK;
  nfa_dm_conn_cback_event_notify(NFA_LISTEN_DISABLED_EVT, &evt_data);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_pause_p2p
**
** Description      Process Pause P2P command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_pause_p2p(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_pause_p2p ()");

  nfa_dm_cb.flags |= NFA_DM_FLAGS_P2P_PAUSED;
  evt_data.status = NFA_STATUS_OK;
  nfa_dm_conn_cback_event_notify(NFA_P2P_PAUSED_EVT, &evt_data);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_resume_p2p
**
** Description      Process resume P2P command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_resume_p2p(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_resume_p2p ()");

  nfa_dm_cb.flags &= ~NFA_DM_FLAGS_P2P_PAUSED;
  evt_data.status = NFA_STATUS_OK;
  nfa_dm_conn_cback_event_notify(NFA_P2P_RESUMED_EVT, &evt_data);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_send_raw_frame
**
** Description      Send an raw frame on RF link
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_send_raw_frame(tNFA_DM_MSG* p_data) {
  tNFC_STATUS status = NFC_STATUS_FAILED;

  NFA_TRACE_DEBUG0("nfa_dm_act_send_raw_frame ()");

  /* If NFC link is activated */
  if ((nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_POLL_ACTIVE) ||
      (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_LISTEN_ACTIVE)) {
    nfa_dm_cb.flags |= NFA_DM_FLAGS_RAW_FRAME;
    NFC_SetReassemblyFlag(false);
    /* If not in exclusive mode, and not activated for LISTEN, then forward raw
     * data to NFA_RW to send */
    if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_EXCL_RF_ACTIVE) &&
        !(nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_LISTEN_ACTIVE) &&
        ((nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_T1T) ||
         (nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_T2T) ||
         (nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_T3T) ||
         (nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_ISO_DEP) ||
         (nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_ISO15693))) {
      /* if RW is checking presence then it will put into pending queue */
      status = nfa_rw_send_raw_frame((NFC_HDR*)p_data);
    } else {
      status = NFC_SendData(NFC_RF_CONN_ID, (NFC_HDR*)p_data);
      if (status != NFC_STATUS_OK) {
        NFC_SetReassemblyFlag(true);
      }
      /* Already freed or NCI layer will free buffer */
      return false;
    }
  }

  if (status == NFC_STATUS_FAILED) {
    NFC_SetReassemblyFlag(true);
    /* free the buffer */
    return true;
  } else {
    /* NCI layer will free buffer */
    return false;
  }
}

/*******************************************************************************
**
** Function         nfa_dm_set_p2p_listen_tech
**
** Description      Notify change of P2P listen technologies to NFA P2P
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_set_p2p_listen_tech(tNFA_DM_MSG* p_data) {
  NFA_TRACE_DEBUG1("nfa_dm_set_p2p_listen_tech ()  tech_mask = %d",
                   p_data->set_p2p_listen_tech.tech_mask);

  nfa_p2p_update_listen_tech(p_data->set_p2p_listen_tech.tech_mask);
  nfa_dm_conn_cback_event_notify(NFA_SET_P2P_LISTEN_TECH_EVT, NULL);

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_start_rf_discovery
**
** Description      Process start RF discovery command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_start_rf_discovery(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_start_rf_discovery ()");

  if (nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_ENABLED) {
    evt_data.status = NFA_STATUS_OK;
    nfa_dm_conn_cback_event_notify(NFA_RF_DISCOVERY_STARTED_EVT, &evt_data);
  } else if (nfa_dm_cb.disc_cb.disc_state != NFA_DM_RFST_IDLE) {
    evt_data.status = NFA_STATUS_SEMANTIC_ERROR;
    nfa_dm_conn_cback_event_notify(NFA_RF_DISCOVERY_STARTED_EVT, &evt_data);
  } else {
    nfa_dm_cb.disc_cb.disc_flags |=
        (NFA_DM_DISC_FLAGS_ENABLED | NFA_DM_DISC_FLAGS_NOTIFY);
    nfa_dm_start_rf_discover();
  }

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_stop_rf_discovery
**
** Description      Process stop RF discovery command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_stop_rf_discovery(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG0("nfa_dm_act_stop_rf_discovery ()");

  if (!(nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_ENABLED) ||
      (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_IDLE)) {
    nfa_dm_cb.disc_cb.disc_flags &= ~NFA_DM_DISC_FLAGS_ENABLED;

    /* if discover command has been sent in IDLE state and waiting for response
     */
    if (nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_W4_RSP) {
      nfa_dm_cb.disc_cb.disc_flags |= NFA_DM_DISC_FLAGS_STOPPING;
    } else {
      evt_data.status = NFA_STATUS_OK;
      nfa_dm_conn_cback_event_notify(NFA_RF_DISCOVERY_STOPPED_EVT, &evt_data);
    }
  } else {
    nfa_dm_cb.disc_cb.disc_flags &= ~NFA_DM_DISC_FLAGS_ENABLED;
    nfa_dm_cb.disc_cb.disc_flags |= NFA_DM_DISC_FLAGS_STOPPING;

    if (nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_IDLE) == NFA_STATUS_OK) {
      if (nfa_dm_cb.disc_cb.kovio_tle.in_use)
        nfa_sys_stop_timer(&nfa_dm_cb.disc_cb.kovio_tle);
      nfa_rw_stop_presence_check_timer();
    }
  }
  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_set_rf_disc_duration
**
** Description      Set duration for RF discovery
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_set_rf_disc_duration(tNFA_DM_MSG* p_data) {
  nfa_dm_cb.disc_cb.disc_duration = p_data->disc_duration.rf_disc_dur_ms;
  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_get_rf_disc_duration
**
** Description      Get duration for RF discovery
**
** Returns          uint16_t
**
*******************************************************************************/
uint16_t nfa_dm_act_get_rf_disc_duration() {
  return (nfa_dm_cb.disc_cb.disc_duration);
}
/*******************************************************************************
**
** Function         nfa_dm_act_select
**
** Description      Process RF select command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_select(tNFA_DM_MSG* p_data) {
  NFA_TRACE_DEBUG0("nfa_dm_act_select ()");

  nfa_dm_rf_discover_select(p_data->select.rf_disc_id, p_data->select.protocol,
                            p_data->select.rf_interface);
  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_update_rf_params
**
** Description      Process update RF communication parameters command
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_update_rf_params(tNFA_DM_MSG* p_data) {
  tNFA_CONN_EVT_DATA conn_evt;

  NFA_TRACE_DEBUG0("nfa_dm_act_update_rf_params ()");

  if (NFC_UpdateRFCommParams(&p_data->update_rf_params.params) !=
      NFC_STATUS_OK) {
    conn_evt.status = NFA_STATUS_FAILED;
    nfa_dm_conn_cback_event_notify(NFA_UPDATE_RF_PARAM_RESULT_EVT, &conn_evt);
  }

  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_disable_timeout
**
** Description      timeout on disable process. Shutdown immediately
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
bool nfa_dm_act_disable_timeout(tNFA_DM_MSG* p_data) {
  tNFA_DM_API_DISABLE disable;

  disable.graceful = false;
  nfa_dm_disable((tNFA_DM_MSG*)&disable);
  return true;
}

/*******************************************************************************
**
** Function         nfa_dm_act_conn_cback_notify
**
** Description      Notify app of reader/writer/ndef events
**
** Returns          nothing
**
*******************************************************************************/
void nfa_dm_act_conn_cback_notify(uint8_t event, tNFA_CONN_EVT_DATA* p_data) {
  NFA_TRACE_DEBUG1("nfa_dm_act_conn_cback_notify (): event:0x%X", event);

  /* Notify event using appropriate CONN_CBACK */
  nfa_dm_conn_cback_event_notify(event, p_data);

  /* If not in exclusive RF mode, then read NDEF message from tag (if automatic
   * reading is enabled) */
  if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_EXCL_RF_ACTIVE)) {
    if ((event == NFA_NDEF_DETECT_EVT) &&
        (nfa_dm_cb.flags & NFA_DM_FLAGS_AUTO_READING_NDEF)) {
      /* read NDEF message from tag */
      if (p_data->ndef_detect.status == NFA_STATUS_OK) {
        NFA_RwReadNDef();
      } else if (p_data->ndef_detect.status == NFA_STATUS_FAILED) {
        nfa_dm_cb.flags &= ~NFA_DM_FLAGS_AUTO_READING_NDEF;
      }
      /* ignore NFA_STATUS_BUSY */
    } else if ((event == NFA_READ_CPLT_EVT) &&
               (nfa_dm_cb.flags & NFA_DM_FLAGS_AUTO_READING_NDEF)) {
      /* reading NDEF message is done */
      nfa_dm_cb.flags &= ~NFA_DM_FLAGS_AUTO_READING_NDEF;
    }
  }
}

/*******************************************************************************
**
** Function         nfa_dm_act_data_cback
**
** Description      Processing data from RF link
**
** Returns          None
**
*******************************************************************************/
static void nfa_dm_act_data_cback(uint8_t conn_id, tNFC_CONN_EVT event,
                                  tNFC_CONN* p_data) {
  NFC_HDR* p_msg;
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG1("nfa_dm_act_data_cback (): event = 0x%X", event);

  if (event == NFC_DATA_CEVT) {
    p_msg = (NFC_HDR*)p_data->data.p_data;

    if (p_msg) {
      evt_data.data.status = p_data->data.status;
      evt_data.data.p_data = (uint8_t*)(p_msg + 1) + p_msg->offset;
      evt_data.data.len = p_msg->len;

      nfa_dm_conn_cback_event_notify(NFA_DATA_EVT, &evt_data);

      GKI_freebuf(p_msg);
    } else {
      NFA_TRACE_ERROR0(
          "nfa_dm_act_data_cback (): received NFC_DATA_CEVT with NULL data "
          "pointer");
    }
  } else if (event == NFC_DEACTIVATE_CEVT) {
    NFC_SetStaticRfCback(NULL);
  }
}

/*******************************************************************************
**
** Function         nfa_dm_excl_disc_cback
**
** Description      Processing event from discovery callback
**
** Returns          None
**
*******************************************************************************/
static void nfa_dm_excl_disc_cback(tNFA_DM_RF_DISC_EVT event,
                                   tNFC_DISCOVER* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG1("nfa_dm_excl_disc_cback (): event:0x%02X", event);

  switch (event) {
    case NFA_DM_RF_DISC_START_EVT:
      evt_data.status = NFA_STATUS_OK;
      nfa_dm_conn_cback_event_notify(NFA_EXCLUSIVE_RF_CONTROL_STARTED_EVT,
                                     &evt_data);
      break;

    case NFA_DM_RF_DISC_ACTIVATED_EVT:
      if (nfa_dm_cb.disc_cb.activated_tech_mode == NFC_DISCOVERY_TYPE_POLL_A) {
        /* store SEL_RES response */
        nfa_dm_cb.disc_cb.activated_sel_res =
            p_data->activate.rf_tech_param.param.pa.sel_rsp;
      }

      if (nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_LISTEN_ACTIVE) {
        /* Set data callback to receive raw frame */
        NFC_SetStaticRfCback(nfa_dm_act_data_cback);

        memset(&(evt_data.activated.params), 0x00, sizeof(tNFA_TAG_PARAMS));
        memcpy(&(evt_data.activated.activate_ntf), &(p_data->activate),
               sizeof(tNFC_ACTIVATE_DEVT));

        nfa_dm_conn_cback_event_notify(NFA_ACTIVATED_EVT, &evt_data);
      } else {
        /* holding activation notification until sub-module is ready */
        nfa_dm_cb.p_activate_ntf =
            (uint8_t*)GKI_getbuf(sizeof(tNFC_ACTIVATE_DEVT));

        if (nfa_dm_cb.p_activate_ntf) {
          memcpy(nfa_dm_cb.p_activate_ntf, &(p_data->activate),
                 sizeof(tNFC_ACTIVATE_DEVT));

          if ((nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T1T) ||
              (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T2T) ||
              (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T3T) ||
              (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_ISO_DEP) ||
              (nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_ISO15693) ||
              (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_KOVIO)) {
            /* Notify NFA tag sub-system */
            nfa_rw_proc_disc_evt(NFA_DM_RF_DISC_ACTIVATED_EVT, p_data, false);
          } else /* if NFC-DEP, ISO-DEP with frame interface or others */
          {
            /* Set data callback to receive raw frame */
            NFC_SetStaticRfCback(nfa_dm_act_data_cback);
            nfa_dm_notify_activation_status(NFA_STATUS_OK, NULL);
          }
        } else {
          /* deactivate and restart RF discovery */
          nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_DISCOVERY);
        }
      }
      break;

    case NFA_DM_RF_DISC_DEACTIVATED_EVT:

      /* if deactivated to idle or discovery */
      if ((p_data->deactivate.type == NFC_DEACTIVATE_TYPE_IDLE) ||
          (p_data->deactivate.type == NFC_DEACTIVATE_TYPE_DISCOVERY)) {
        /* clear stored NFCID/UID/KOVIO bar code */
        nfa_dm_cb.activated_nfcid_len = 0;
      }

      if (nfa_dm_cb.disc_cb.activated_protocol != NFC_PROTOCOL_NFC_DEP) {
        /* Notify NFA RW sub-systems */
        nfa_rw_proc_disc_evt(NFA_DM_RF_DISC_DEACTIVATED_EVT, NULL, false);
      }

      /* if deactivated as sleep mode */
      if ((p_data->deactivate.type == NFC_DEACTIVATE_TYPE_SLEEP) ||
          (p_data->deactivate.type == NFC_DEACTIVATE_TYPE_SLEEP_AF)) {
        evt_data.deactivated.type = NFA_DEACTIVATE_TYPE_SLEEP;
      } else {
        evt_data.deactivated.type = NFA_DEACTIVATE_TYPE_IDLE;
      }

      /* notify deactivation to upper layer */
      nfa_dm_conn_cback_event_notify(NFA_DEACTIVATED_EVT, &evt_data);

      /* clean up SEL_RES response */
      nfa_dm_cb.disc_cb.activated_sel_res = 0;
      break;

    default:
      NFA_TRACE_ERROR0("Unexpected event");
      break;
  }
}

/*******************************************************************************
**
** Function         nfa_dm_poll_disc_cback
**
** Description      Processing event from discovery callback
**
** Returns          None
**
*******************************************************************************/
static void nfa_dm_poll_disc_cback(tNFA_DM_RF_DISC_EVT event,
                                   tNFC_DISCOVER* p_data) {
  tNFA_CONN_EVT_DATA evt_data;

  NFA_TRACE_DEBUG1("nfa_dm_poll_disc_cback (): event:0x%02X", event);

  switch (event) {
    case NFA_DM_RF_DISC_START_EVT:
      break;

    case NFA_DM_RF_DISC_ACTIVATED_EVT:

      if (nfa_dm_cb.disc_cb.activated_tech_mode == NFC_DISCOVERY_TYPE_POLL_A) {
        /* store SEL_RES response */
        nfa_dm_cb.disc_cb.activated_sel_res =
            p_data->activate.rf_tech_param.param.pa.sel_rsp;
      }

      /* holding activation notification until sub-module is ready */
      nfa_dm_cb.p_activate_ntf =
          (uint8_t*)GKI_getbuf(sizeof(tNFC_ACTIVATE_DEVT));

      if (nfa_dm_cb.p_activate_ntf) {
        memcpy(nfa_dm_cb.p_activate_ntf, &(p_data->activate),
               sizeof(tNFC_ACTIVATE_DEVT));

        if ((nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_NFC_DEP) &&
            (nfa_dm_cb.disc_cb.activated_rf_interface ==
             NFC_INTERFACE_NFC_DEP)) {
          if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_P2P_PAUSED)) {
            /* activate LLCP */
            nfa_p2p_activate_llcp(p_data);
            if (nfa_dm_cb.p_activate_ntf) {
              GKI_freebuf(nfa_dm_cb.p_activate_ntf);
              nfa_dm_cb.p_activate_ntf = NULL;
            }
          } else {
            NFA_TRACE_DEBUG0("P2P is paused");
            nfa_dm_notify_activation_status(NFA_STATUS_OK, NULL);
          }
        } else if ((nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T1T) ||
                   (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T2T) ||
                   (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T3T) ||
                   (nfa_dm_cb.disc_cb.activated_protocol ==
                    NFC_PROTOCOL_ISO_DEP) ||
                   (nfa_dm_cb.disc_cb.activated_protocol ==
                    NFC_PROTOCOL_15693) ||
                   (nfa_dm_cb.disc_cb.activated_protocol ==
                    NFC_PROTOCOL_KOVIO) ||
                   (nfa_dm_cb.disc_cb.activated_protocol ==
                    NFC_PROTOCOL_MIFARE)) {
          /* Notify NFA tag sub-system */
          nfa_rw_proc_disc_evt(NFA_DM_RF_DISC_ACTIVATED_EVT, p_data, true);
        } else /* if NFC-DEP/ISO-DEP with frame interface */
        {
          /* Set data callback to receive raw frame */
          NFC_SetStaticRfCback(nfa_dm_act_data_cback);
          nfa_dm_notify_activation_status(NFA_STATUS_OK, NULL);
        }
      } else {
        /* deactivate and restart RF discovery */
        nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_DISCOVERY);
      }
      break;

    case NFA_DM_RF_DISC_DEACTIVATED_EVT:

      /* if deactivated to idle or discovery */
      if ((p_data->deactivate.type == NFC_DEACTIVATE_TYPE_IDLE) ||
          (p_data->deactivate.type == NFC_DEACTIVATE_TYPE_DISCOVERY)) {
        /* clear stored NFCID/UID/KOVIO bar code */
        nfa_dm_cb.activated_nfcid_len = 0;
      }

      if ((nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_NFC_DEP) &&
          (nfa_dm_cb.disc_cb.activated_rf_interface == NFC_INTERFACE_NFC_DEP)) {
        /*
        ** If LLCP link is not deactivated yet,
        ** LLCP will receive deactivation ntf through data callback.
        ** NFA P2P will receive callback event from LLCP.
        */
      } else {
        /* Notify NFA RW sub-systems */
        nfa_rw_proc_disc_evt(NFA_DM_RF_DISC_DEACTIVATED_EVT, NULL, true);
      }

      /* if NFA sent NFA_ACTIVATED_EVT earlier */
      if (nfa_dm_cb.flags & NFA_DM_FLAGS_SEND_DEACTIVATED_EVT) {
        nfa_dm_cb.flags &= ~NFA_DM_FLAGS_SEND_DEACTIVATED_EVT;

        /* if deactivated as sleep mode */
        if ((p_data->deactivate.type == NFC_DEACTIVATE_TYPE_SLEEP) ||
            (p_data->deactivate.type == NFC_DEACTIVATE_TYPE_SLEEP_AF)) {
          evt_data.deactivated.type = NFA_DEACTIVATE_TYPE_SLEEP;
        } else {
          evt_data.deactivated.type = NFA_DEACTIVATE_TYPE_IDLE;
        }
        /* notify deactivation to application */
        nfa_dm_conn_cback_event_notify(NFA_DEACTIVATED_EVT, &evt_data);
      }

      /* clean up SEL_RES response */
      nfa_dm_cb.disc_cb.activated_sel_res = 0;

      if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_POLLING_ENABLED)) {
        /* deregister discovery callback from NFA DM Discovery */
        nfa_dm_delete_rf_discover(nfa_dm_cb.poll_disc_handle);
        nfa_dm_cb.poll_disc_handle = NFA_HANDLE_INVALID;

        /* this is for disable polling */
        if (nfa_dm_cb.flags & NFA_DM_FLAGS_SEND_POLL_STOP_EVT) {
          nfa_dm_cb.flags &= ~NFA_DM_FLAGS_SEND_POLL_STOP_EVT;

          evt_data.status = NFA_STATUS_OK;
          nfa_dm_conn_cback_event_notify(NFA_POLL_DISABLED_EVT, &evt_data);
        }
      }
      break;
  }
}

/*******************************************************************************
**
** Function         nfa_dm_notify_activation_status
**
** Description      Processing activation status from sub-modules
**
** Returns          None
**
*******************************************************************************/
void nfa_dm_notify_activation_status(tNFA_STATUS status,
                                     tNFA_TAG_PARAMS* p_params) {
  tNFA_CONN_EVT_DATA evt_data;
  tNFC_RF_TECH_PARAMS* p_tech_params;
  uint8_t *p_nfcid = NULL, nfcid_len;

  NFA_TRACE_DEBUG1("nfa_dm_notify_activation_status (): status:0x%X", status);

  if (!nfa_dm_cb.p_activate_ntf) {
    /* this is for NFA P2P listen */
    return;
  }

  if (status == NFA_STATUS_OK) {
    /* notify NFC link activation */
    memcpy(&(evt_data.activated.activate_ntf), nfa_dm_cb.p_activate_ntf,
           sizeof(tNFC_ACTIVATE_DEVT));

    p_tech_params = &evt_data.activated.activate_ntf.rf_tech_param;

    memset(&(evt_data.activated.params), 0x00, sizeof(tNFA_TAG_PARAMS));
    if (p_params) {
      memcpy(&(evt_data.activated.params), p_params, sizeof(tNFA_TAG_PARAMS));
    }

    /* get length of NFCID and location */
    if (p_tech_params->mode == NFC_DISCOVERY_TYPE_POLL_A) {
      if ((p_tech_params->param.pa.nfcid1_len == 0) && (p_params != NULL)) {
        nfcid_len = sizeof(p_params->t1t.uid);
        p_nfcid = p_params->t1t.uid;
        evt_data.activated.activate_ntf.rf_tech_param.param.pa.nfcid1_len =
            nfcid_len;
        memcpy(evt_data.activated.activate_ntf.rf_tech_param.param.pa.nfcid1,
               p_nfcid, nfcid_len);
      } else {
        nfcid_len = p_tech_params->param.pa.nfcid1_len;
        p_nfcid = p_tech_params->param.pa.nfcid1;
      }
    } else if (p_tech_params->mode == NFC_DISCOVERY_TYPE_POLL_B) {
      nfcid_len = NFC_NFCID0_MAX_LEN;
      p_nfcid = p_tech_params->param.pb.nfcid0;
    } else if (p_tech_params->mode == NFC_DISCOVERY_TYPE_POLL_F) {
      nfcid_len = NFC_NFCID2_LEN;
      p_nfcid = p_tech_params->param.pf.nfcid2;
    } else if (p_tech_params->mode == NFC_DISCOVERY_TYPE_POLL_ISO15693) {
      nfcid_len = NFC_ISO15693_UID_LEN;
      p_nfcid = p_tech_params->param.pi93.uid;
    } else if (p_tech_params->mode == NFC_DISCOVERY_TYPE_POLL_KOVIO) {
      nfcid_len = p_tech_params->param.pk.uid_len;
      p_nfcid = p_tech_params->param.pk.uid;
    } else {
      nfcid_len = 0;
    }

    /*
    ** If not in exlusive RF mode, and
    **      P2P activation, then push default NDEF message through SNEP
    **      TAG activation, then read NDEF message
    */
    if (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_NFC_DEP) {
      /*
      ** Default NDEF message will be put to NFC Forum defualt SNEP server
      ** after receiving NFA_LLCP_ACTIVATED_EVT.
      */
    } else if (!(nfa_dm_cb.flags & NFA_DM_FLAGS_EXCL_RF_ACTIVE)) {
      /*
      ** if the same tag is activated then do not perform auto NDEF
      ** detection. Application may put a tag into sleep mode and
      ** reactivate the same tag.
      */

      if ((p_tech_params->mode != nfa_dm_cb.activated_tech_mode) ||
          (nfcid_len != nfa_dm_cb.activated_nfcid_len) ||
          (memcmp(p_nfcid, nfa_dm_cb.activated_nfcid, nfcid_len))) {
        if ((nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T1T) ||
            (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T2T) ||
            (nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_T3T) ||
            ((nfa_dm_cb.disc_cb.activated_protocol == NFC_PROTOCOL_ISO_DEP) &&
             (nfa_dm_cb.disc_cb.activated_rf_interface ==
              NFC_INTERFACE_ISO_DEP)) ||
            (nfa_dm_cb.disc_cb.activated_protocol == NFA_PROTOCOL_ISO15693)) {
          if (p_nfa_dm_cfg->auto_detect_ndef) {
            if (p_nfa_dm_cfg->auto_read_ndef) {
              nfa_dm_cb.flags |= NFA_DM_FLAGS_AUTO_READING_NDEF;
            }
            NFA_RwDetectNDef();
          } else if (p_nfa_dm_cfg->auto_read_ndef) {
            NFA_RwReadNDef();
          }
        }
      }
    }

    /* store activated tag information */
    nfa_dm_cb.activated_tech_mode = p_tech_params->mode;
    nfa_dm_cb.activated_nfcid_len = nfcid_len;
    if (nfcid_len) memcpy(nfa_dm_cb.activated_nfcid, p_nfcid, nfcid_len);

    nfa_dm_cb.flags |= NFA_DM_FLAGS_SEND_DEACTIVATED_EVT;
    if (!(nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_CHECKING))
      nfa_dm_conn_cback_event_notify(NFA_ACTIVATED_EVT, &evt_data);
  } else {
    /* if NFC_DEP, NFA P2P will deactivate */
    if (nfa_dm_cb.disc_cb.activated_protocol != NFC_PROTOCOL_NFC_DEP) {
      nfa_dm_rf_deactivate(NFA_DEACTIVATE_TYPE_DISCOVERY);
    }
  }

  GKI_freebuf(nfa_dm_cb.p_activate_ntf);
  nfa_dm_cb.p_activate_ntf = NULL;
}

#if (BT_TRACE_VERBOSE == TRUE)
/*******************************************************************************
**
** Function         nfa_dm_nfc_revt_2_str
**
** Description      convert nfc revt to string
**
*******************************************************************************/
char* nfa_dm_nfc_revt_2_str(tNFC_RESPONSE_EVT event) {
  switch (event) {
    case NFC_ENABLE_REVT:
      return "NFC_ENABLE_REVT";

    case NFC_DISABLE_REVT:
      return "NFC_DISABLE_REVT";

    case NFC_SET_CONFIG_REVT:
      return "NFC_SET_CONFIG_REVT";

    case NFC_GET_CONFIG_REVT:
      return "NFC_GET_CONFIG_REVT";

    case NFC_NFCEE_DISCOVER_REVT:
      return "NFC_NFCEE_DISCOVER_REVT";

    case NFC_NFCEE_INFO_REVT:
      return "NFC_NFCEE_INFO_REVT";

    case NFC_NFCEE_MODE_SET_REVT:
      return "NFC_NFCEE_MODE_SET_REVT";

    case NFC_RF_FIELD_REVT:
      return "NFC_RF_FIELD_REVT";

    case NFC_EE_ACTION_REVT:
      return "NFC_EE_ACTION_REVT";

    case NFC_EE_DISCOVER_REQ_REVT:
      return "NFC_EE_DISCOVER_REQ_REVT";

    case NFC_SET_ROUTING_REVT:
      return "NFC_SET_ROUTING_REVT";

    case NFC_GET_ROUTING_REVT:
      return "NFC_GET_ROUTING_REVT";

    case NFC_GEN_ERROR_REVT:
      return "NFC_GEN_ERROR_REVT";

    case NFC_NFCC_RESTART_REVT:
      return "NFC_NFCC_RESTART_REVT";

    case NFC_NFCC_TIMEOUT_REVT:
      return "NFC_NFCC_TIMEOUT_REVT";

    case NFC_NFCC_TRANSPORT_ERR_REVT:
      return "NFC_NFCC_TRANSPORT_ERR_REVT";

    case NFC_NFCC_POWER_OFF_REVT:
      return "NFC_NFCC_POWER_OFF_REVT";

    default:
      return "unknown revt";
      break;
  }
}
#endif /* BT_VERBOSE */