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      1 /*
      2  * Copyright 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /******************************************************************************
     18  *
     19  *  Filename:      hardware.c
     20  *
     21  *  Description:   Contains controller-specific functions, like
     22  *                      firmware patch download
     23  *                      low power mode operations
     24  *
     25  ******************************************************************************/
     26 
     27 #define LOG_TAG "bt_vendor"
     28 
     29 #include "bt_hci_bdroid.h"
     30 #include "bt_vendor_qcom.h"
     31 #include <ctype.h>
     32 #include <dirent.h>
     33 #include <errno.h>
     34 #include <fcntl.h>
     35 #include <signal.h>
     36 #include <stdlib.h>
     37 #include <string.h>
     38 #include <sys/stat.h>
     39 #include <sys/types.h>
     40 #include <time.h>
     41 #include <unistd.h>
     42 
     43 #include <cutils/properties.h>
     44 #include <utils/Log.h>
     45 #define MAX_CNT_RETRY 100
     46 
     47 int hw_config(int nState)
     48 {
     49     char *szState[] = {"true", "false"};
     50     char *szReqSt = NULL;
     51     char szBtSocStatus[PROPERTY_VALUE_MAX] = {'\0', };
     52 
     53     if(nState == BT_VND_PWR_OFF)
     54         szReqSt = szState[1];
     55     else
     56         szReqSt = szState[0];
     57 
     58     if((property_get("bluetooth.status", szBtSocStatus, "") <= 0))
     59     {
     60        if(nState == BT_VND_PWR_ON ) {
     61           ALOGW("Hw_config: First Time BT on after boot.Starting hciattach daemon BTStatus=%s",szBtSocStatus);
     62           if (property_set("bluetooth.hciattach", szReqSt) < 0)
     63           {
     64               ALOGE("Hw_config: Property Setting fail");
     65               return -1;
     66           }
     67        }
     68     } else if( !(strncmp(szBtSocStatus, "on", strlen("on")))) {
     69           //BTSOC is already on
     70           ALOGW("Hw_config: nState = %d", nState);
     71     } else {
     72           ALOGW("Hw_config: trigerring hciattach");
     73           if (property_set("bluetooth.hciattach", szReqSt) < 0)
     74           {
     75               ALOGE("Hw_config: Property Setting fail");
     76               return -1;
     77           }
     78     }
     79 
     80     return 0;
     81 }
     82 
     83 int readTrpState()
     84 {
     85     char szBtStatus[PROPERTY_VALUE_MAX] = {0, };
     86     if(property_get("bluetooth.status", szBtStatus, "") < 0){
     87         ALOGE("Fail to get bluetooth status");
     88         return FALSE;
     89     }
     90 
     91     if(!strncmp(szBtStatus, "on", strlen("on"))){
     92         ALOGI("bluetooth status is on");
     93         return TRUE;
     94     }
     95     return FALSE;
     96 }
     97 
     98 int is_hw_ready()
     99 {
    100     int i=0;
    101     char szStatus[10] = {0,};
    102 
    103     for(i=MAX_CNT_RETRY; i>0; i--){
    104        //TODO :: checking routine
    105        if(readTrpState()==TRUE){
    106            break;
    107        }
    108        usleep(50*1000);
    109     }
    110     return (i==0)? FALSE:TRUE;
    111 }
    112 
    113 #if (HW_NEED_END_WITH_HCI_RESET == TRUE)
    114 /*******************************************************************************
    115 **
    116 ** Function         hw_epilog_cback
    117 **
    118 ** Description      Callback function for Command Complete Events from HCI
    119 **                  commands sent in epilog process.
    120 **
    121 ** Returns          None
    122 **
    123 *******************************************************************************/
    124 void hw_epilog_cback(void *p_mem)
    125 {
    126     HC_BT_HDR *p_evt_buf = (HC_BT_HDR *) p_mem;
    127     char        *p_name, *p_tmp;
    128     uint8_t     *p, status;
    129     uint16_t    opcode;
    130 
    131     status = *((uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_STATUS_RET_BYTE);
    132     p = (uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_OPCODE;
    133     STREAM_TO_UINT16(opcode,p);
    134 
    135     ALOGI("%s Opcode:0x%04X Status: %d", __FUNCTION__, opcode, status);
    136 
    137     /* Must free the RX event buffer */
    138     q.cb->dealloc(p_evt_buf);
    139 
    140     /* Once epilog process is done, must call callback to notify caller */
    141     q.cb->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
    142 
    143 }
    144 
    145 /*******************************************************************************
    146 **
    147 ** Function         hw_epilog_process
    148 **
    149 ** Description      Sample implementation of epilog process. This process is
    150 **                  called with q_lock held and q.cb is assumed to be valid.
    151 **
    152 ** Returns          None
    153 **
    154 *******************************************************************************/
    155 void __hw_epilog_process(void)
    156 {
    157     HC_BT_HDR  *p_buf = NULL;
    158     uint8_t     *p;
    159 
    160     ALOGI("hw_epilog_process");
    161 
    162     /* Sending a HCI_RESET */
    163     /* Must allocate command buffer via HC's alloc API */
    164     p_buf = (HC_BT_HDR *) q.cb->alloc(BT_HC_HDR_SIZE + HCI_CMD_PREAMBLE_SIZE);
    165     if (p_buf)
    166     {
    167         p_buf->event = MSG_STACK_TO_HC_HCI_CMD;
    168         p_buf->offset = 0;
    169         p_buf->layer_specific = 0;
    170         p_buf->len = HCI_CMD_PREAMBLE_SIZE;
    171 
    172         p = (uint8_t *) (p_buf + 1);
    173         UINT16_TO_STREAM(p, HCI_RESET);
    174         *p = 0; /* parameter length */
    175 
    176         /* Send command via HC's xmit_cb API */
    177         q.cb->xmit_cb(HCI_RESET, p_buf, hw_epilog_cback);
    178     }
    179     else
    180     {
    181         ALOGE("vendor lib epilog process aborted [no buffer]");
    182         q.cb->epilog_cb(BT_VND_OP_RESULT_FAIL);
    183     }
    184 }
    185 #endif // (HW_NEED_END_WITH_HCI_RESET == TRUE)
    186