39 lines
1.1 KiB
Bash
39 lines
1.1 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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##
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# For some reason /dev/ttyS0 is created, and then removed by udev. We need this
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# for bluetooth, and the only way to get it again is to reload 8502_dw. Do so.
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##
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##
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# /sys/devices/pci0000:00/0000:00:1e.0/driver -> intel-lpss
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# /sys/bus/pci/devices/0000:00:1e.0
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# /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:8a/BCM2E7C:00
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##
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# udevadm info --query=all --path=/sys/bus/serial/devices/serial0-0
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# P: /devices/pci0000:00/0000:00:1e.0/dw-apb-uart.2/serial0/serial0-0
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# M: serial0-0
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# R: 0
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# U: serial
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# E: DEVPATH=/devices/pci0000:00/0000:00:1e.0/dw-apb-uart.2/serial0/serial0-0
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# E: SUBSYSTEM=serial
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# E: MODALIAS=acpi:BCM2E7C:APPLE-UART-BLTH:
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# E: USEC_INITIALIZED=12406199
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# E: PATH=/nix/store/56jhf2k9q31gwvhjxmm2akkkhi4a8nz1-udev-path/bin:/nix/store/56jhf2k9q31gwvhjxmm2akkkhi4a8nz1-udev-path/sbin
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# E: ID_VENDOR_FROM_DATABASE=Broadcom
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if [[ ! -e "/sys/devices/pci0000:00/0000:00:1e.0/dw-apb-uart.2/tty/ttyS0" ]]; then
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if [[ -e /sys/module/8250_dw ]]; then
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rmmod 8250_dw
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fi
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modprobe 8250_dw
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fi
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exec btattach --protocol=h4 --bredr=/dev/ttyS0 --speed=3000000
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