[packages/bluez.git] / btattach-bcm-service.sh

#!/bin/sh

# Simple shell script to wait for the tty for an uart using BT HCI to show up
# and then invoke btattach with the right parameters, this is intended to be
# invoked from a hardware-activated systemd service
#
# For now this only suports ACPI enumerated Broadcom BT HCIs.
# This has been tested on Bay and Cherry Trail devices with both ACPI and
# PCI enumerated UARTs.
#
# Note the kernel bt developers are working on solving this entirely in the
# kernel, so it is not worth the trouble to write something better then this.

BT_DEV="/sys/bus/platform/devices/$1"
BT_DEV="$(readlink -f $BT_DEV)"
UART_DEV="$(dirname $BT_DEV)"

# Stupid GPD-pocket has USB BT with id 0000:0000, but still claims to have
# an uart attached bt
if [ "$1" = "BCM2E7E:00" ] && lsusb | grep -q "ID 0000:0000"; then
	exit 0
fi

while [ ! -d "$UART_DEV/tty" ]; do
	sleep .2
done

TTY="$(ls $UART_DEV/tty)"

exec btattach --bredr "/dev/$TTY" -P bcm
Commit	Line	Data
477801c9 JR	1	#!/bin/sh
	2
	3	# Simple shell script to wait for the tty for an uart using BT HCI to show up
	4	# and then invoke btattach with the right parameters, this is intended to be
	5	# invoked from a hardware-activated systemd service
	6	#
	7	# For now this only suports ACPI enumerated Broadcom BT HCIs.
	8	# This has been tested on Bay and Cherry Trail devices with both ACPI and
	9	# PCI enumerated UARTs.
	10	#
	11	# Note the kernel bt developers are working on solving this entirely in the
	12	# kernel, so it is not worth the trouble to write something better then this.
	13
	14	BT_DEV="/sys/bus/platform/devices/$1"
	15	BT_DEV="$(readlink -f $BT_DEV)"
	16	UART_DEV="$(dirname $BT_DEV)"
	17
	18	# Stupid GPD-pocket has USB BT with id 0000:0000, but still claims to have
	19	# an uart attached bt
	20	if [ "$1" = "BCM2E7E:00" ] && lsusb \| grep -q "ID 0000:0000"; then
	21	exit 0
	22	fi
	23
	24	while [ ! -d "$UART_DEV/tty" ]; do
	25	sleep .2
	26	done
	27
	28	TTY="$(ls $UART_DEV/tty)"
	29
	30	exec btattach --bredr "/dev/$TTY" -P bcm