141 lines
3.8 KiB
Bash
141 lines
3.8 KiB
Bash
#!/bin/sh
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#===============================================================================
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#
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# Copyright (C) 2012-2018 by Digi International Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 as published by
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# the Free Software Foundation.
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#
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#
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# !Description: Initialize bluetooth hardware
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#
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#===============================================================================
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# Bluetooth power GPIO
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BT_PWR_GPIO_NR="244"
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# set_gpio_value <gpio_nr> <value>
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set_gpio_value() {
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local SG_GPIONR="${1}"
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local SG_GPIOVAL="${2}"
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local SG_GPIOPATH="/sys/class/gpio/gpio${SG_GPIONR}"
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[ -d "${SG_GPIOPATH}" ] || printf "%s" "${SG_GPIONR}" > /sys/class/gpio/export
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printf out > "${SG_GPIOPATH}/direction" && sleep .2
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printf "${SG_GPIOVAL}" > "${SG_GPIOPATH}/value" && sleep .2
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[ -d "${SG_GPIOPATH}" ] && printf "%s" "${SG_GPIONR}" > /sys/class/gpio/unexport
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}
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# powercycle_gpio <gpio_nr>
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powercycle_gpio() {
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set_gpio_value "${1}" 0
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set_gpio_value "${1}" 1
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}
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error() {
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echo ${1}
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exit 1
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}
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bluetooth_init() {
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# Get MAC address from the device tree. Use a default value if it has not been set.
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BT_MACADDR="$(hexdump -ve '1/1 "%02X" ":"' /proc/device-tree/bluetooth/mac-address 2>/dev/null | sed 's/:$//g')"
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if [ -z "${BT_MACADDR}" ] || [ "${BT_MACADDR}" = "00:00:00:00:00:00" ]; then
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BT_MACADDR="00:04:F3:FF:FF:BB"
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fi
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# Use a sub-shell here to change to firmware directory
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(
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cd /lib/firmware/ar3k/1020200
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# Update the MAC address file only if it has changed.
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FW_MAC="ar3kbdaddr.pst"
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[ -f "${FW_MAC}" ] && [ "$(cat ${FW_MAC})" = "${BT_MACADDR}" ] || echo ${BT_MACADDR} > ${FW_MAC}
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# Symlink the correct firmware file depending on region code
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JPN_REGCODE="0x2"
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REGCODE="$(cat /proc/device-tree/digi,hwid,cert 2>/dev/null | tr -d '\0')"
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BT_CLASS_LINK="PS_ASIC.pst"
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BT_CLASS_FILE="PS_ASIC_class_1.pst"
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if [ -n "${REGCODE}" ] && [ "${JPN_REGCODE}" = "${REGCODE}" ]; then
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BT_CLASS_FILE="PS_ASIC_class_2.pst"
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fi
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if ! cmp -s ${BT_CLASS_FILE} ${BT_CLASS_LINK}; then
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ln -sf ${BT_CLASS_FILE} ${BT_CLASS_LINK}
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fi
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# Remove not used configuration and readme files
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# -- Do not quote the subcommand to avoid leading/trailing whitespace
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# -- being part of the file name.
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rm -f $(echo PS_ASIC_class_?.pst | sed -e "s,${BT_CLASS_FILE},,g") readme.txt
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)
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# Start the Bluetooth driver and bring up the interface
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HCIATTACH_LOG="/var/log/hciattach.log"
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BT_CMD="HCIATTACH"
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RETRIES="5"
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while [ "${RETRIES}" -gt "0" ]; do
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case "${BT_CMD}" in
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HCIATTACH)
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# Reset BT
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killproc hciattach
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powercycle_gpio "${BT_PWR_GPIO_NR}"
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if hciattach ttyBt ath3k 4000000 >${HCIATTACH_LOG} 2>&1; then
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BT_CMD="HCICONFIG_UP"
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else
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BT_ERROR="FAILED (hciattach)"
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BT_CMD="BT_INIT_FAIL"
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fi
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;;
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HCICONFIG_UP)
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if hciconfig hci0 up; then
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break
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else
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BT_ERROR="FAILED (hciconfig up)"
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BT_CMD="BT_INIT_FAIL"
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fi
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;;
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BT_INIT_FAIL)
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RETRIES="$((RETRIES - 1))"
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BT_CMD="HCIATTACH"
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;;
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esac
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done
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[ "${RETRIES}" = "0" ] && error "${BT_ERROR}"
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}
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# Source function library
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. /etc/init.d/functions
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case "$1" in
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start)
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if [ -d "/proc/device-tree/bluetooth" ]; then
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if [ "$(tr -d '\0' 2>/dev/null </proc/device-tree/bluetooth/status)" != "disabled" ]; then
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echo -n "Starting bluetooth hardware: "
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bluetooth_init
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echo "${BT_ERROR:-done.}"
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fi
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fi
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;;
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stop)
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if [ -d "/sys/class/bluetooth/hci0" ]; then
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echo -n "Stopping bluetooth hardware: "
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hciconfig hci0 down || BT_ERROR="FAILED (hciconfig down)"
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killproc hciattach
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# Power down bluetooth
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set_gpio_value "${BT_PWR_GPIO_NR}" 0
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echo "${BT_ERROR:-done.}"
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fi
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;;
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restart)
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$0 stop
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sleep 1
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$0 start
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;;
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*)
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echo "Usage: $0 {start|stop|restart}"
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exit 1
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;;
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esac
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