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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 <log/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 <unistd.h>
41 #include "bt_hci_bdroid.h"
42 #include "bt_vendor_qcom.h"
43 #include <string.h>
44 #define MAX_CNT_RETRY 100
45 
hw_config(int nState)46 int hw_config(int nState)
47 {
48     char *szState[] = {"true", "false"};
49     char *szReqSt = NULL;
50     char szBtSocStatus[PROPERTY_VALUE_MAX] = {'\0', };
51 
52     if(nState == BT_VND_PWR_OFF)
53         szReqSt = szState[1];
54     else
55         szReqSt = szState[0];
56 
57     if((property_get("bluetooth.status", szBtSocStatus, "") <= 0))
58     {
59        if(nState == BT_VND_PWR_ON ) {
60           ALOGW("Hw_config: First Time BT on after boot.Starting hciattach daemon BTStatus=%s",szBtSocStatus);
61           if (property_set("bluetooth.hciattach", szReqSt) < 0)
62           {
63               ALOGE("Hw_config: Property Setting fail");
64               return -1;
65           }
66        }
67     } else if( !(strncmp(szBtSocStatus, "on", strlen("on")))) {
68           //BTSOC is already on
69           ALOGW("Hw_config: nState = %d", nState);
70     } else {
71           ALOGW("Hw_config: trigerring hciattach");
72           if (property_set("bluetooth.hciattach", szReqSt) < 0)
73           {
74               ALOGE("Hw_config: Property Setting fail");
75               return -1;
76           }
77     }
78 
79     return 0;
80 }
81 
readTrpState()82 int readTrpState()
83 {
84     char szBtStatus[PROPERTY_VALUE_MAX] = {0, };
85     if(property_get("bluetooth.status", szBtStatus, "") < 0){
86         ALOGE("Fail to get bluetooth status");
87         return FALSE;
88     }
89 
90     if(!strncmp(szBtStatus, "on", strlen("on"))){
91         ALOGI("bluetooth status is on");
92         return TRUE;
93     }
94     return FALSE;
95 }
96 
is_hw_ready()97 int is_hw_ready()
98 {
99     int i=0;
100     char szStatus[10] = {0,};
101 
102     for(i=MAX_CNT_RETRY; i>0; i--){
103        //TODO :: checking routine
104        if(readTrpState()==TRUE){
105            break;
106        }
107        usleep(50*1000);
108     }
109     return (i==0)? FALSE:TRUE;
110 }
111 
112 #if (HW_NEED_END_WITH_HCI_RESET == TRUE)
113 /*******************************************************************************
114 **
115 ** Function         hw_epilog_cback
116 **
117 ** Description      Callback function for Command Complete Events from HCI
118 **                  commands sent in epilog process.
119 **
120 ** Returns          None
121 **
122 *******************************************************************************/
hw_epilog_cback(void * p_mem)123 void hw_epilog_cback(void *p_mem)
124 {
125     HC_BT_HDR *p_evt_buf = (HC_BT_HDR *) p_mem;
126     char        *p_name, *p_tmp;
127     uint8_t     *p, status;
128     uint16_t    opcode;
129 
130     status = *((uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_STATUS_RET_BYTE);
131     p = (uint8_t *)(p_evt_buf + 1) + HCI_EVT_CMD_CMPL_OPCODE;
132     STREAM_TO_UINT16(opcode,p);
133 
134     ALOGI("%s Opcode:0x%04X Status: %d", __FUNCTION__, opcode, status);
135 
136 #ifdef BT_THREADLOCK_SAFE
137     pthread_mutex_lock(&q_lock);
138 #endif
139     if (!q) {
140         ALOGE("hw_epilog_cback called with NULL context");
141         goto out;
142     }
143     /* Must free the RX event buffer */
144     q->cb->dealloc(p_evt_buf);
145 
146     /* Once epilog process is done, must call callback to notify caller */
147     q->cb->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
148 out:
149 #ifdef BT_THREADLOCK_SAFE
150     pthread_mutex_unlock(&q_lock);
151 #endif
152     return;
153 }
154 
155 /*******************************************************************************
156 **
157 ** Function         hw_epilog_process
158 **
159 ** Description      Sample implementation of epilog process. This process is
160 **                  called with q_lock held and q->cb is assumed to be valid.
161 **
162 ** Returns          None
163 **
164 *******************************************************************************/
__hw_epilog_process(void)165 void __hw_epilog_process(void)
166 {
167     HC_BT_HDR  *p_buf = NULL;
168     uint8_t     *p;
169 
170     ALOGI("hw_epilog_process");
171 
172     /* Sending a HCI_RESET */
173     /* Must allocate command buffer via HC's alloc API */
174     p_buf = (HC_BT_HDR *) q->cb->alloc(BT_HC_HDR_SIZE + HCI_CMD_PREAMBLE_SIZE);
175     if (p_buf)
176     {
177         p_buf->event = MSG_STACK_TO_HC_HCI_CMD;
178         p_buf->offset = 0;
179         p_buf->layer_specific = 0;
180         p_buf->len = HCI_CMD_PREAMBLE_SIZE;
181 
182         p = (uint8_t *) (p_buf + 1);
183         UINT16_TO_STREAM(p, HCI_RESET);
184         *p = 0; /* parameter length */
185 
186         /* Send command via HC's xmit_cb API */
187         q->cb->xmit_cb(HCI_RESET, p_buf, hw_epilog_cback);
188     }
189     else
190     {
191         ALOGE("vendor lib epilog process aborted [no buffer]");
192         q->cb->epilog_cb(BT_VND_OP_RESULT_FAIL);
193     }
194 }
195 #endif // (HW_NEED_END_WITH_HCI_RESET == TRUE)
196