/******************************************************************************
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*
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* Copyright (C) 2009-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* Filename: userial_vendor.c
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*
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* Description: Contains vendor-specific userial functions
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*
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******************************************************************************/
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#define LOG_TAG "bt_userial_vendor"
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#include <utils/Log.h>
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#include <termios.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "bt_vendor_brcm.h"
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#include "userial.h"
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#include "userial_vendor.h"
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#include <unistd.h>
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/******************************************************************************
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** Constants & Macros
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******************************************************************************/
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#ifndef VNDUSERIAL_DBG
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#define VNDUSERIAL_DBG FALSE
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#endif
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#if (VNDUSERIAL_DBG == TRUE)
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#define VNDUSERIALDBG(param, ...) {ALOGD(param, ## __VA_ARGS__);}
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#else
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#define VNDUSERIALDBG(param, ...) {}
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#endif
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#define VND_PORT_NAME_MAXLEN 256
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/******************************************************************************
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** Local type definitions
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******************************************************************************/
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/* vendor serial control block */
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typedef struct
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{
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int fd; /* fd to Bluetooth device */
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struct termios termios; /* serial terminal of BT port */
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char port_name[VND_PORT_NAME_MAXLEN];
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} vnd_userial_cb_t;
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/******************************************************************************
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** Static variables
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******************************************************************************/
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static vnd_userial_cb_t vnd_userial;
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/*****************************************************************************
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** Helper Functions
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*****************************************************************************/
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/*******************************************************************************
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**
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** Function userial_to_tcio_baud
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**
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** Description helper function converts USERIAL baud rates into TCIO
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** conforming baud rates
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**
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** Returns TRUE/FALSE
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**
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*******************************************************************************/
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uint8_t userial_to_tcio_baud(uint8_t cfg_baud, uint32_t *baud)
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{
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if (cfg_baud == USERIAL_BAUD_115200)
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*baud = B115200;
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else if (cfg_baud == USERIAL_BAUD_4M)
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*baud = B4000000;
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else if (cfg_baud == USERIAL_BAUD_3_5M)
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*baud = B3500000;
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else if (cfg_baud == USERIAL_BAUD_3M)
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*baud = B3000000;
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else if (cfg_baud == USERIAL_BAUD_2_5M)
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*baud = B2500000;
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else if (cfg_baud == USERIAL_BAUD_2M)
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*baud = B2000000;
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else if (cfg_baud == USERIAL_BAUD_1_5M)
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*baud = B1500000;
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else if (cfg_baud == USERIAL_BAUD_1M)
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*baud = B1000000;
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else if (cfg_baud == USERIAL_BAUD_921600)
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*baud = B921600;
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else if (cfg_baud == USERIAL_BAUD_460800)
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*baud = B460800;
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else if (cfg_baud == USERIAL_BAUD_230400)
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*baud = B230400;
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else if (cfg_baud == USERIAL_BAUD_57600)
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*baud = B57600;
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else if (cfg_baud == USERIAL_BAUD_19200)
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*baud = B19200;
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else if (cfg_baud == USERIAL_BAUD_9600)
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*baud = B9600;
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else if (cfg_baud == USERIAL_BAUD_1200)
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*baud = B1200;
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else if (cfg_baud == USERIAL_BAUD_600)
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*baud = B600;
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else
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{
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ALOGE( "userial vendor open: unsupported baud idx %i", cfg_baud);
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*baud = B115200;
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return FALSE;
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}
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return TRUE;
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}
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#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE)
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/*******************************************************************************
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**
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** Function userial_ioctl_init_bt_wake
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**
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** Description helper function to set the open state of the bt_wake if ioctl
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** is used. it should not hurt in the rfkill case but it might
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** be better to compile it out.
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**
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** Returns none
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**
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*******************************************************************************/
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void userial_ioctl_init_bt_wake(int fd)
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{
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uint32_t bt_wake_state;
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#if (BT_WAKE_USERIAL_LDISC==TRUE)
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int ldisc = N_BRCM_HCI; /* brcm sleep mode support line discipline */
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/* attempt to load enable discipline driver */
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if (ioctl(vnd_userial.fd, TIOCSETD, &ldisc) < 0)
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{
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VNDUSERIALDBG("USERIAL_Open():fd %d, TIOCSETD failed: error %d for ldisc: %d",
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fd, errno, ldisc);
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}
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#endif
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/* assert BT_WAKE through ioctl */
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ioctl(fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL);
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ioctl(fd, USERIAL_IOCTL_BT_WAKE_GET_ST, &bt_wake_state);
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VNDUSERIALDBG("userial_ioctl_init_bt_wake read back BT_WAKE state=%i", \
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bt_wake_state);
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}
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#endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE)
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/*****************************************************************************
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** Userial Vendor API Functions
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*****************************************************************************/
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/*******************************************************************************
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**
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** Function userial_vendor_init
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**
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** Description Initialize userial vendor-specific control block
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**
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** Returns None
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**
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*******************************************************************************/
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void userial_vendor_init(void)
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{
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vnd_userial.fd = -1;
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snprintf(vnd_userial.port_name, VND_PORT_NAME_MAXLEN, "%s", \
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BLUETOOTH_UART_DEVICE_PORT);
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}
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/*******************************************************************************
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**
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** Function userial_vendor_open
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**
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** Description Open the serial port with the given configuration
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**
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** Returns device fd
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**
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*******************************************************************************/
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int userial_vendor_open(tUSERIAL_CFG *p_cfg)
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{
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uint32_t baud;
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uint8_t data_bits;
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uint16_t parity;
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uint8_t stop_bits;
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vnd_userial.fd = -1;
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if (!userial_to_tcio_baud(p_cfg->baud, &baud))
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{
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return -1;
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}
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if(p_cfg->fmt & USERIAL_DATABITS_8)
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data_bits = CS8;
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else if(p_cfg->fmt & USERIAL_DATABITS_7)
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data_bits = CS7;
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else if(p_cfg->fmt & USERIAL_DATABITS_6)
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data_bits = CS6;
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else if(p_cfg->fmt & USERIAL_DATABITS_5)
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data_bits = CS5;
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else
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{
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ALOGE("userial vendor open: unsupported data bits");
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return -1;
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}
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if(p_cfg->fmt & USERIAL_PARITY_NONE)
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parity = 0;
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else if(p_cfg->fmt & USERIAL_PARITY_EVEN)
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parity = PARENB;
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else if(p_cfg->fmt & USERIAL_PARITY_ODD)
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parity = (PARENB | PARODD);
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else
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{
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ALOGE("userial vendor open: unsupported parity bit mode");
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return -1;
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}
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if(p_cfg->fmt & USERIAL_STOPBITS_1)
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stop_bits = 0;
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else if(p_cfg->fmt & USERIAL_STOPBITS_2)
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stop_bits = CSTOPB;
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else
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{
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ALOGE("userial vendor open: unsupported stop bits");
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return -1;
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}
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ALOGI("userial vendor open: opening %s", vnd_userial.port_name);
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if ((vnd_userial.fd = open(vnd_userial.port_name, O_RDWR)) == -1)
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{
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ALOGE("userial vendor open: unable to open %s", vnd_userial.port_name);
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return -1;
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}
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tcflush(vnd_userial.fd, TCIOFLUSH);
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tcgetattr(vnd_userial.fd, &vnd_userial.termios);
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cfmakeraw(&vnd_userial.termios);
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vnd_userial.termios.c_cflag |= (CRTSCTS | stop_bits);
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tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios);
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tcflush(vnd_userial.fd, TCIOFLUSH);
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tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios);
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tcflush(vnd_userial.fd, TCIOFLUSH);
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tcflush(vnd_userial.fd, TCIOFLUSH);
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/* set input/output baudrate */
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cfsetospeed(&vnd_userial.termios, baud);
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cfsetispeed(&vnd_userial.termios, baud);
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tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios);
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#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE)
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userial_ioctl_init_bt_wake(vnd_userial.fd);
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#endif
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ALOGI("device fd = %d open", vnd_userial.fd);
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return vnd_userial.fd;
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}
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/*******************************************************************************
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**
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** Function userial_vendor_close
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**
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** Description Conduct vendor-specific close work
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**
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** Returns None
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**
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*******************************************************************************/
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void userial_vendor_close(void)
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{
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int result;
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if (vnd_userial.fd == -1)
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return;
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#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE)
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/* de-assert bt_wake BEFORE closing port */
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ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL);
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#endif
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ALOGI("device fd = %d close", vnd_userial.fd);
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// flush Tx before close to make sure no chars in buffer
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tcflush(vnd_userial.fd, TCIOFLUSH);
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if ((result = close(vnd_userial.fd)) < 0)
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ALOGE( "close(fd:%d) FAILED result:%d", vnd_userial.fd, result);
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vnd_userial.fd = -1;
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}
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/*******************************************************************************
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**
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** Function userial_vendor_set_baud
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**
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** Description Set new baud rate
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**
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** Returns None
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**
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*******************************************************************************/
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void userial_vendor_set_baud(uint8_t userial_baud)
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{
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uint32_t tcio_baud;
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userial_to_tcio_baud(userial_baud, &tcio_baud);
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cfsetospeed(&vnd_userial.termios, tcio_baud);
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cfsetispeed(&vnd_userial.termios, tcio_baud);
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tcsetattr(vnd_userial.fd, TCSANOW, &vnd_userial.termios);
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}
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/*******************************************************************************
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**
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** Function userial_vendor_ioctl
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**
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** Description ioctl inteface
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**
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** Returns None
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**
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*******************************************************************************/
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void userial_vendor_ioctl(userial_vendor_ioctl_op_t op, void *p_data)
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{
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switch(op)
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{
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#if (BT_WAKE_VIA_USERIAL_IOCTL==TRUE)
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case USERIAL_OP_ASSERT_BT_WAKE:
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VNDUSERIALDBG("## userial_vendor_ioctl: Asserting BT_Wake ##");
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ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_ASSERT, NULL);
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break;
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case USERIAL_OP_DEASSERT_BT_WAKE:
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VNDUSERIALDBG("## userial_vendor_ioctl: De-asserting BT_Wake ##");
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ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_DEASSERT, NULL);
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break;
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case USERIAL_OP_GET_BT_WAKE_STATE:
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ioctl(vnd_userial.fd, USERIAL_IOCTL_BT_WAKE_GET_ST, p_data);
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break;
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#endif // (BT_WAKE_VIA_USERIAL_IOCTL==TRUE)
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default:
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break;
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}
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}
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/*******************************************************************************
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**
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** Function userial_set_port
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**
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** Description Configure UART port name
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**
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** Returns 0 : Success
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** Otherwise : Fail
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**
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*******************************************************************************/
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int userial_set_port(char *p_conf_name, char *p_conf_value, int param)
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{
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strcpy(vnd_userial.port_name, p_conf_value);
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return 0;
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}
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