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