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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 <utils/Log.h>
     30 #include <sys/types.h>
     31 #include <sys/stat.h>
     32 #include <signal.h>
     33 #include <time.h>
     34 #include <errno.h>
     35 #include <fcntl.h>
     36 #include <dirent.h>
     37 #include <ctype.h>
     38 #include <cutils/properties.h>
     39 #include <stdlib.h>
     40 #include <string.h>
     41 #include "bt_hci_bdroid.h"
     42 #include "bt_vendor_qcom.h"
     43 
     44 #define MAX_CNT_RETRY 100
     45 
     46 int hw_config(int nState)
     47 {
     48     ALOGI("Starting hciattach daemon");
     49     char *szState[] = {"true", "false"};
     50     char *szReqSt = NULL;
     51 
     52     if(nState == BT_VND_PWR_OFF)
     53         szReqSt = szState[1];
     54     else
     55         szReqSt = szState[0];
     56 
     57     ALOGI("try to set %s", szReqSt);
     58 
     59     if (property_set("bluetooth.hciattach", szReqSt) < 0){
     60         ALOGE("Property Setting fail");
     61 	return -1;
     62     }
     63 
     64     return 0;
     65 }
     66 
     67 int readTrpState()
     68 {
     69     char szBtStatus[PROPERTY_VALUE_MAX] = {0, };
     70     if(property_get("bluetooth.status", szBtStatus, "") < 0){
     71         ALOGE("Fail to get bluetooth satus");
     72         return FALSE;
     73     }
     74 
     75     if(!strncmp(szBtStatus, "on", strlen("on"))){
     76         ALOGI("bluetooth satus is on");
     77         return TRUE;
     78     }
     79     return FALSE;
     80 }
     81 
     82 int is_hw_ready()
     83 {
     84     int i=0;
     85     char szStatus[10] = {0,};
     86 
     87     for(i=MAX_CNT_RETRY; i>0; i--){
     88        usleep(50*1000);
     89        //TODO :: checking routine
     90        if(readTrpState()==TRUE){
     91            break;
     92        }
     93     }
     94 
     95     return (i==0)? FALSE:TRUE;
     96 }
     97 
     98 #if (HW_NEED_END_WITH_HCI_RESET == TRUE)
     99 /*******************************************************************************
    100 **
    101 ** Function         hw_epilog_cback
    102 **
    103 ** Description      Callback function for Command Complete Events from HCI
    104 **                  commands sent in epilog process.
    105 **
    106 ** Returns          None
    107 **
    108 *******************************************************************************/
    109 void hw_epilog_cback(void *p_mem)
    110 {
    111     HC_BT_HDR *p_evt_buf = (HC_BT_HDR *) p_mem;
    112     char        *p_name, *p_tmp;
    113     uint8_t     *p, status;
    114     uint16_t    opcode;
    115 
    116     status = *((uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_STATUS_RET_BYTE);
    117     p = (uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_OPCODE;
    118     STREAM_TO_UINT16(opcode,p);
    119 
    120     ALOGI("%s Opcode:0x%04X Status: %d", __FUNCTION__, opcode, status);
    121 
    122     if (bt_vendor_cbacks)
    123     {
    124         /* Must free the RX event buffer */
    125         bt_vendor_cbacks->dealloc(p_evt_buf);
    126 
    127         /* Once epilog process is done, must call callback to notify caller */
    128         bt_vendor_cbacks->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
    129     }
    130 }
    131 
    132 /*******************************************************************************
    133 **
    134 ** Function         hw_epilog_process
    135 **
    136 ** Description      Sample implementation of epilog process
    137 **
    138 ** Returns          None
    139 **
    140 *******************************************************************************/
    141 void hw_epilog_process(void)
    142 {
    143     HC_BT_HDR  *p_buf = NULL;
    144     uint8_t     *p;
    145 
    146     ALOGI("hw_epilog_process");
    147 
    148     /* Sending a HCI_RESET */
    149     if (bt_vendor_cbacks)
    150     {
    151         /* Must allocate command buffer via HC's alloc API */
    152         p_buf = (HC_BT_HDR *) bt_vendor_cbacks->alloc(BT_HC_HDR_SIZE + \
    153                                                        HCI_CMD_PREAMBLE_SIZE);
    154     }
    155 
    156     if (p_buf)
    157     {
    158         p_buf->event = MSG_STACK_TO_HC_HCI_CMD;
    159         p_buf->offset = 0;
    160         p_buf->layer_specific = 0;
    161         p_buf->len = HCI_CMD_PREAMBLE_SIZE;
    162 
    163         p = (uint8_t *) (p_buf + 1);
    164         UINT16_TO_STREAM(p, HCI_RESET);
    165         *p = 0; /* parameter length */
    166 
    167         /* Send command via HC's xmit_cb API */
    168         bt_vendor_cbacks->xmit_cb(HCI_RESET, p_buf, hw_epilog_cback);
    169     }
    170     else
    171     {
    172         if (bt_vendor_cbacks)
    173         {
    174             ALOGE("vendor lib epilog process aborted [no buffer]");
    175             bt_vendor_cbacks->epilog_cb(BT_VND_OP_RESULT_FAIL);
    176         }
    177     }
    178 }
    179 #endif // (HW_NEED_END_WITH_HCI_RESET == TRUE)
    180