31 lines
935 B
Bash
31 lines
935 B
Bash
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#!/bin/bash
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# Simple shell script to wait for the tty for an uart using BT HCI to show up
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# and then invoke btattach with the right parameters, this is intended to be
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# invoked from a hardware-activated systemd service
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#
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# For now this only suports ACPI enumerated Broadcom BT HCIs.
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# This has been tested on Bay and Cherry Trail devices with both ACPI and
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# PCI enumerated UARTs.
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#
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# Note the kernel bt developers are working on solving this entirely in the
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# kernel, so it is not worth the trouble to write something better then this.
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BT_DEV="/sys/bus/platform/devices/$1"
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BT_DEV="$(readlink -f $BT_DEV)"
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UART_DEV="$(dirname $BT_DEV)"
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# Stupid GPD-pocket has USB BT with id 0000:0000, but still claims to have
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# an uart attached bt
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if [ "$1" = "BCM2E7E:00" ] && lsusb | grep -q "ID 0000:0000"; then
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exit 0
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fi
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while [ ! -d "$UART_DEV/tty" ]; do
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sleep .2
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done
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TTY="$(ls $UART_DEV/tty)"
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exec btattach --bredr "/dev/$TTY" -P bcm
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