This is a collection of dotfiles and scripts for my bspwm setup
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#!/bin/sh
# fiio - systemd suspend/resume hook
#
# Disable FiiO DAC when going to sleep.
# Usb vendor/product ID found using lsusb.
#
# Reference:
# https://bbs.archlinux.org/viewtopic.php?id=242633
id="262a:100e"
file="/tmp/systemd-system-sleep-fiio"
case $1 in
pre)
device=$(tree /sys | grep -i "usb.*$id" | sed -E '1s/.*\/(.*):[0-9]\.[0-9].*/\1/;2,$d')
# Bail if device isnt connected
[ -z "$device" ] && exit 1
echo "Suspending device [FiiO USB DAC E17K] on usb $device"
echo "$device" > "$file"
echo "$device" > /sys/bus/usb/drivers/usb/unbind
;;
post)
# Bail if device isnt connected
[ ! -f "$file" ] && exit 1
echo "Resuming device [FiiO USB DAC E17K] on usb $(cat file)"
cat "$file" > /sys/bus/usb/drivers/usb/bind
rm "$file"
;;
esac