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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_hwcfg"
     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 "bt_hci_bdroid.h"
     41 #include "bt_vendor_qcom.h"
     42 
     43 #define MAX_CNT_RETRY 100
     44 
     45 int hw_config(int nState)
     46 {
     47     ALOGI("Starting hciattach daemon");
     48     char *szState[] = {"true", "false"};
     49     char *szReqSt = NULL;
     50 
     51     if(nState == BT_VND_PWR_OFF)
     52         szReqSt = szState[1];
     53     else
     54         szReqSt = szState[0];
     55 
     56     ALOGI("try to set %s", szReqSt);
     57 
     58     if (property_set("bluetooth.hciattach", szReqSt) < 0){
     59         ALOGE("Property Setting fail");
     60 	return -1;
     61     }
     62 
     63     return 0;
     64 }
     65 
     66 int readTrpState()
     67 {
     68     char szBtStatus[PROPERTY_VALUE_MAX] = {0, };
     69     if(property_get("bluetooth.status", szBtStatus, "") < 0){
     70         ALOGE("Fail to get bluetooth satus");
     71         return FALSE;
     72     }
     73 
     74     if(!strncmp(szBtStatus, "on", strlen("on"))){
     75         ALOGI("bluetooth satus is on");
     76         return TRUE;
     77     }
     78     return FALSE;
     79 }
     80 
     81 int is_hw_ready()
     82 {
     83     int i=0;
     84     char szStatus[10] = {0,};
     85 
     86     for(i=MAX_CNT_RETRY; i>0; i--){
     87        usleep(50*1000);
     88        //TODO :: checking routine
     89        if(readTrpState()==TRUE){
     90            break;
     91        }
     92     }
     93 
     94     return (i==0)? FALSE:TRUE;
     95 }
     96 
     97 #if (HW_NEED_END_WITH_HCI_RESET == TRUE)
     98 /*******************************************************************************
     99 **
    100 ** Function         hw_epilog_cback
    101 **
    102 ** Description      Callback function for Command Complete Events from HCI
    103 **                  commands sent in epilog process.
    104 **
    105 ** Returns          None
    106 **
    107 *******************************************************************************/
    108 void hw_epilog_cback(void *p_mem)
    109 {
    110     HC_BT_HDR *p_evt_buf = (HC_BT_HDR *) p_mem;
    111     char        *p_name, *p_tmp;
    112     uint8_t     *p, status;
    113     uint16_t    opcode;
    114 
    115     status = *((uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_STATUS_RET_BYTE);
    116     p = (uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_OPCODE;
    117     STREAM_TO_UINT16(opcode,p);
    118 
    119     ALOGI("%s Opcode:0x%04X Status: %d", __FUNCTION__, opcode, status);
    120 
    121     if (bt_vendor_cbacks)
    122     {
    123         /* Must free the RX event buffer */
    124         bt_vendor_cbacks->dealloc(p_evt_buf);
    125 
    126         /* Once epilog process is done, must call callback to notify caller */
    127         bt_vendor_cbacks->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
    128     }
    129 }
    130 
    131 /*******************************************************************************
    132 **
    133 ** Function         hw_epilog_process
    134 **
    135 ** Description      Sample implementation of epilog process
    136 **
    137 ** Returns          None
    138 **
    139 *******************************************************************************/
    140 void hw_epilog_process(void)
    141 {
    142     HC_BT_HDR  *p_buf = NULL;
    143     uint8_t     *p;
    144 
    145     ALOGI("hw_epilog_process");
    146 
    147     /* Sending a HCI_RESET */
    148     if (bt_vendor_cbacks)
    149     {
    150         /* Must allocate command buffer via HC's alloc API */
    151         p_buf = (HC_BT_HDR *) bt_vendor_cbacks->alloc(BT_HC_HDR_SIZE + \
    152                                                        HCI_CMD_PREAMBLE_SIZE);
    153     }
    154 
    155     if (p_buf)
    156     {
    157         p_buf->event = MSG_STACK_TO_HC_HCI_CMD;
    158         p_buf->offset = 0;
    159         p_buf->layer_specific = 0;
    160         p_buf->len = HCI_CMD_PREAMBLE_SIZE;
    161 
    162         p = (uint8_t *) (p_buf + 1);
    163         UINT16_TO_STREAM(p, HCI_RESET);
    164         *p = 0; /* parameter length */
    165 
    166         /* Send command via HC's xmit_cb API */
    167         bt_vendor_cbacks->xmit_cb(HCI_RESET, p_buf, hw_epilog_cback);
    168     }
    169     else
    170     {
    171         if (bt_vendor_cbacks)
    172         {
    173             ALOGE("vendor lib epilog process aborted [no buffer]");
    174             bt_vendor_cbacks->epilog_cb(BT_VND_OP_RESULT_FAIL);
    175         }
    176     }
    177 }
    178 #endif // (HW_NEED_END_WITH_HCI_RESET == TRUE)
    179 
    180 
    181