/usr/lib/pm-utils/power.d/pci_devices is in pm-utils 1.4.1-17.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | #!/bin/sh
#
# This script adjusts the power control of a set of PCI devices that
# prove beneficial to enable power savings
#
PCI_DEVICES_PM_ENABLE="${PCI_DEVICES_PM_ENABLE:-true}"
set_pci_device()
{
for dev in /sys/bus/pci/devices/* ; do
if [ -e $dev/class -a -e $dev/power/control ]; then
id=`basename $dev`
case `cat $dev/class` in
0x020000) # ethernet
echo "Setting Ethernet device $id to $1"
echo $1 > $dev/power/control
;;
0x028000) # wireless
echo "Setting Wireless device $id to $1"
echo $1 > $dev/power/control
;;
0x040300) # audio
echo "Setting Audio device $id to $1"
echo $1 > $dev/power/control
;;
0x060000) # host bridge
echo "Setting Host Bridge $id to $1"
echo $1 > $dev/power/control
;;
0x080500) # SD card reader
echo "Setting SD card reader device $id to $1"
echo $1 > $dev/power/control
;;
0x088000|0x088001) # card reader
echo "Setting card reader device $id to $1"
echo $1 > $dev/power/control
;;
0x0c0000|0x0c0010) # firewire
echo "Setting FireWire device $id to $1"
echo $1 > $dev/power/control
;;
esac
fi
done
}
case "$1" in
true) # powersaving on
[ "$PCI_DEVICES_PM_ENABLE" = true ] && set_pci_device "auto"
;;
false) # powersaving off
[ "$PCI_DEVICES_PM_ENABLE" = true ] && set_pci_device "on"
;;
*)
exit 254
;;
esac
exit 0
|