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Diffstat (limited to 'libbt/src/userial_vendor.c')
| -rwxr-xr-x | libbt/src/userial_vendor.c | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/libbt/src/userial_vendor.c b/libbt/src/userial_vendor.c new file mode 100755 index 0000000..1a745b5 --- /dev/null +++ b/libbt/src/userial_vendor.c @@ -0,0 +1,361 @@ +/****************************************************************************** + * + * Copyright (C) 2009-2012 Broadcom Corporation + * + * 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: userial_vendor.c + * + * Description: Contains vendor-specific userial functions + * + ******************************************************************************/ + +#define LOG_TAG "bt_userial_vendor" + +#include <utils/Log.h> +#include <termios.h> +#include <fcntl.h> +#include <errno.h> +#include <stdio.h> +#include "bt_vendor_brcm.h" +#include "userial.h" +#include "userial_vendor.h" + +/****************************************************************************** +** Constants & Macros +******************************************************************************/ + +#ifndef VNDUSERIAL_DBG +#define VNDUSERIAL_DBG FALSE +#endif + +#if (VNDUSERIAL_DBG == TRUE) +#define VNDUSERIALDBG(param, ...) {ALOGD(param, ## __VA_ARGS__);} +#else +#define VNDUSERIALDBG(param, ...) {} +#endif + +#define VND_PORT_NAME_MAXLEN 256 + +/****************************************************************************** +** Local type definitions +******************************************************************************/ + +/* vendor serial control block */ +typedef struct +{ + int fd; /* fd to Bluetooth device */ + struct termios termios; /* serial terminal of BT port */ + char port_name[VND_PORT_NAME_MAXLEN]; +} vnd_userial_cb_t; + +/****************************************************************************** +** Static variables +******************************************************************************/ + +static vnd_userial_cb_t vnd_userial; + +/***************************************************************************** +** Helper Functions +*****************************************************************************/ + +/******************************************************************************* +** +** Function userial_to_tcio_baud +** +** Description helper function converts USERIAL baud rates into TCIO +** conforming baud rates +** +** Returns TRUE/FALSE +** +*******************************************************************************/ +uint8_t userial_to_tcio_baud(uint8_t cfg_baud, uint32_t *baud) +{ + if (cfg_baud == USERIAL_BAUD_115200) + *baud = B115200; + else if (cfg_baud == USERIAL_BAUD_4M) + *baud = B4000000; + else if (cfg_baud == USERIAL_BAUD_3M) + *baud = B3000000; + else if (cfg_baud == USERIAL_BAUD_2M) + *baud = B2000000; + else if (cfg_baud == USERIAL_BAUD_1M) + *baud = B1000000; + else if (cfg_baud == USERIAL_BAUD_921600) + *baud = B921600; + else if (cfg_baud == USERIAL_BAUD_460800) + *baud = B460800; + else if (cfg_baud == USERIAL_BAUD_230400) + *baud = B230400; + else if (cfg_baud == USERIAL_BAUD_57600) + *baud = B57600; + else if (cfg_baud == USERIAL_BAUD_19200) + *baud = B19200; + else if (cfg_baud == USERIAL_BAUD_9600) + *baud = B9600; + else if (cfg_baud == USERIAL_BAUD_1200) + *baud = B1200; + else if (cfg_baud == USERIAL_BAUD_600) + *baud = B600; + else + { + ALOGE( "userial vendor open: unsupported baud idx %i", cfg_baud); + *baud = B115200; + return FALSE; + } + + return TRUE; +} + +#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) +/******************************************************************************* +** +** Function userial_ioctl_init_bt_wake +** +** Description helper function to set the open state of the bt_wake if ioctl +** is used. it should not hurt in the rfkill case but it might +** be better to compile it out. +** +** Returns none +** +*******************************************************************************/ +void userial_ioctl_init_bt_wake(int fd) +{ + uint32_t bt_wake_state; + + /* assert BT_WAKE through ioctl */ + ioctl(fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); + ioctl(fd, USERIAL_IOCTL_BT_WAKE_GET_ST, &bt_wake_state); + VNDUSERIALDBG("userial_ioctl_init_bt_wake read back BT_WAKE state=%i", \ + bt_wake_state); +} +#endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) + + +/***************************************************************************** +** Userial Vendor API Functions +*****************************************************************************/ + +/******************************************************************************* +** +** Function userial_vendor_init +** +** Description Initialize userial vendor-specific control block +** +** Returns None +** +*******************************************************************************/ +void userial_vendor_init(void) +{ + vnd_userial.fd = -1; + snprintf(vnd_userial.port_name, VND_PORT_NAME_MAXLEN, "%s", \ + BLUETOOTH_UART_DEVICE_PORT); +} + +/******************************************************************************* +** +** Function userial_vendor_open +** +** Description Open the serial port with the given configuration +** +** Returns device fd +** +*******************************************************************************/ +int userial_vendor_open(tUSERIAL_CFG *p_cfg) +{ + uint32_t baud; + uint8_t data_bits; + uint16_t parity; + uint8_t stop_bits; + + vnd_userial.fd = -1; + + if (!userial_to_tcio_baud(p_cfg->baud, &baud)) + { + return -1; + } + + if(p_cfg->fmt & USERIAL_DATABITS_8) + data_bits = CS8; + else if(p_cfg->fmt & USERIAL_DATABITS_7) + data_bits = CS7; + else if(p_cfg->fmt & USERIAL_DATABITS_6) + data_bits = CS6; + else if(p_cfg->fmt & USERIAL_DATABITS_5) + data_bits = CS5; + else + { + ALOGE("userial vendor open: unsupported data bits"); + return -1; + } + + if(p_cfg->fmt & USERIAL_PARITY_NONE) + parity = 0; + else if(p_cfg->fmt & USERIAL_PARITY_EVEN) + parity = PARENB; + else if(p_cfg->fmt & USERIAL_PARITY_ODD) + parity = (PARENB | PARODD); + else + { + ALOGE("userial vendor open: unsupported parity bit mode"); + return -1; + } + + if(p_cfg->fmt & USERIAL_STOPBITS_1) + stop_bits = 0; + else if(p_cfg->fmt & USERIAL_STOPBITS_2) + stop_bits = CSTOPB; + else + { + ALOGE("userial vendor open: unsupported stop bits"); + return -1; + } + + ALOGI("userial vendor open: opening %s", vnd_userial.port_name); + + if ((vnd_userial.fd = open(vnd_userial.port_name, O_RDWR)) == -1) + { + ALOGE("userial vendor open: unable to open %s", vnd_userial.port_name); + return -1; + } + + tcflush(vnd_userial.fd, TCIOFLUSH); + + tcgetattr(vnd_userial.fd, &vnd_userial.termios); + cfmakeraw(&vnd_userial.termios); + vnd_userial.termios.c_cflag |= (CRTSCTS | stop_bits); + tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); + tcflush(vnd_userial.fd, TCIOFLUSH); + + tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); + tcflush(vnd_userial.fd, TCIOFLUSH); + tcflush(vnd_userial.fd, TCIOFLUSH); + + /* set input/output baudrate */ + cfsetospeed(&vnd_userial.termios, baud); + cfsetispeed(&vnd_userial.termios, baud); + tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); + +#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) + userial_ioctl_init_bt_wake(vnd_userial.fd); +#endif + + ALOGI("device fd = %d open", vnd_userial.fd); + + return vnd_userial.fd; +} + +/******************************************************************************* +** +** Function userial_vendor_close +** +** Description Conduct vendor-specific close work +** +** Returns None +** +*******************************************************************************/ +void userial_vendor_close(void) +{ + int result; + + if (vnd_userial.fd == -1) + return; + +#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) + /* de-assert bt_wake BEFORE closing port */ + ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); +#endif + + ALOGI("device fd = %d close", vnd_userial.fd); + + if ((result = close(vnd_userial.fd)) < 0) + ALOGE( "close(fd:%d) FAILED result:%d", vnd_userial.fd, result); + + vnd_userial.fd = -1; +} + +/******************************************************************************* +** +** Function userial_vendor_set_baud +** +** Description Set new baud rate +** +** Returns None +** +*******************************************************************************/ +void userial_vendor_set_baud(uint8_t userial_baud) +{ + uint32_t tcio_baud; + + userial_to_tcio_baud(userial_baud, &tcio_baud); + + cfsetospeed(&vnd_userial.termios, tcio_baud); + cfsetispeed(&vnd_userial.termios, tcio_baud); + tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios); +} + +/******************************************************************************* +** +** Function userial_vendor_ioctl +** +** Description ioctl inteface +** +** Returns None +** +*******************************************************************************/ +void userial_vendor_ioctl(userial_vendor_ioctl_op_t op, void *p_data) +{ + switch(op) + { +#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) + case USERIAL_OP_ASSERT_BT_WAKE: + VNDUSERIALDBG("## userial_vendor_ioctl: Asserting BT_Wake ##"); + ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL); + break; + + case USERIAL_OP_DEASSERT_BT_WAKE: + VNDUSERIALDBG("## userial_vendor_ioctl: De-asserting BT_Wake ##"); + ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL); + break; + + case USERIAL_OP_GET_BT_WAKE_STATE: + ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_GET_ST, p_data); + break; +#endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE) + + default: + break; + } +} + +/******************************************************************************* +** +** Function userial_set_port +** +** Description Configure UART port name +** +** Returns 0 : Success +** Otherwise : Fail +** +*******************************************************************************/ +int userial_set_port(char *p_conf_name, char *p_conf_value, int param) +{ + strcpy(vnd_userial.port_name, p_conf_value); + + return 0; +} + |