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/*
* Copyright 2012 The Android Open Source Project
*
* 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.
*/
/******************************************************************************
*
* Filename: hci_smd.c
*
* Description: Contains vendor-specific userial functions
*
******************************************************************************/
#define LOG_TAG "bt_vendor"
#include <utils/Log.h>
#include <termios.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include "bt_vendor_qcom.h"
#include "hci_smd.h"
#include <string.h>
#include <cutils/properties.h>
/*****************************************************************************
** Macros & Constants
*****************************************************************************/
#define NUM_OF_DEVS 2
static char *s_pszDevSmd[] = {
"/dev/smd3",
"/dev/smd2"
};
/******************************************************************************
** Externs
******************************************************************************/
extern int is_bt_ssr_hci;
/*****************************************************************************
** Functions
*****************************************************************************/
int bt_hci_init_transport_id (int chId )
{
struct termios term;
int fd = -1;
int retry = 0;
char ssrvalue[92]= {'\0'};
ssrvalue[0] = '0';
if(chId >= 2 || chId <0)
return -1;
fd = open(s_pszDevSmd[chId], (O_RDWR | O_NOCTTY));
while ((-1 == fd) && (retry < 7)) {
ALOGE("init_transport: Cannot open %s: %s\n. Retry after 2 seconds",
s_pszDevSmd[chId], strerror(errno));
usleep(2000000);
fd = open(s_pszDevSmd[chId], (O_RDWR | O_NOCTTY));
retry++;
}
if (-1 == fd)
{
ALOGE("init_transport: Cannot open %s: %s\n",
s_pszDevSmd[chId], strerror(errno));
return -1;
}
/* Sleep (0.5sec) added giving time for the smd port to be successfully
opened internally. Currently successful return from open doesn't
ensure the smd port is successfully opened.
TODO: Following sleep to be removed once SMD port is successfully
opened immediately on return from the aforementioned open call */
property_get("bluetooth.isSSR", ssrvalue, "");
if(ssrvalue[0] == '1')
{
/*reset the SSR flag */
if(chId == 1)
{
if(property_set("bluetooth.isSSR", "0") < 0)
{
ALOGE("SSR: hci_smd.c:SSR case : error in setting up property new\n ");
}
else
{
ALOGE("SSR: hci_smd.c:SSR case : Reset the SSr Flag new\n ");
}
}
ALOGE("hci_smd.c:IN SSR sleep for 500 msec New \n");
usleep(500000);
}
if (tcflush(fd, TCIOFLUSH) < 0)
{
ALOGE("init_uart: Cannot flush %s\n", s_pszDevSmd[chId]);
close(fd);
return -1;
}
if (tcgetattr(fd, &term) < 0)
{
ALOGE("init_uart: Error while getting attributes\n");
close(fd);
return -1;
}
cfmakeraw(&term);
/* JN: Do I need to make flow control configurable, since 4020 cannot
* disable it?
*/
term.c_cflag |= (CRTSCTS | CLOCAL);
if (tcsetattr(fd, TCSANOW, &term) < 0)
{
ALOGE("init_uart: Error while getting attributes\n");
close(fd);
return -1;
}
ALOGI("Done intiailizing UART\n");
return fd;
}
int bt_hci_init_transport(int *pFd)
{
int i = 0;
int fd;
for(i=0; i < NUM_OF_DEVS; i++){
fd = bt_hci_init_transport_id(i);
if(fd < 0 ){
return -1;
}
pFd[i] = fd;
}
return 0;
}
int bt_hci_deinit_transport(int *pFd)
{
close(pFd[0]);
close(pFd[1]);
return TRUE;
}
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