power-functions

#
# power-functions
#

PROFILES='bat adp dyn quiet'
PROFILE_DEFAULT=adp

xbl()
{
	[ -n "${DISPLAY}" ] || return 0
	xbacklight -set ${1:-20}
	xset dpms ${2:-300} ${3:-400} ${4:-600}
}

start()
{
	local CPU PCI USB HDA NMI VMW ASPM SCSI
	local cpu pci usb hda nmi vmw aspm scsi

	CPU=${1:-powersave} PCI=${2:-auto} USB=${3:-auto}
	HDA=${5:-1} NMI=${6:-0} VMW=${7:-1000}
	ASPM=${8:-default} 	SCSI=${4:-min_power}

	for cpu in /sys/devices/system/cpu/cpu[0-9]*; do
		echo ${CPU} >$cpu/cpufreq/scaling_governor
	done
	[ -e /sys/module/pcie_aspm/parameters/policy ] &&
		echo ${ASPM} >/sys/module/pcie_aspm/parameters/policy >$NULL 2>&1
	for scsi in /sys/class/scsi_host/host[0-9]*; do
		[ -e $scsi/link_power_management_policy ] || continue
		case "$(cat $scsi/proc_name)" in
			(ahci|usb-storage)
				echo ${SCSI} >$scsi/link_power_management_policy;;
			(*) ;;
		esac
	done
	# Set usb host to auto powersave
	for usb in /sys/bus/usb/devices/{usb[0-9],[0-9]-[0-9]}; do
		echo ${USB} >$usb/power/control
	done
	# PCI power control
	for pci in /sys/bus/pci/devices/0000:0*; do
		echo ${PCI} >$pci/power/control
	done
	# snd-hda-intel powersave
	[ -e /sys/module/snd_hda_intel/parameters/power_save ] &&
	echo ${HDA} >/sys/module/snd_hda_intel/parameters/power_save
	# Turn off NMI watchdog
	[ -e /proc/sys/kernel/nmi_watchdog ] &&
	echo ${NMI} >/proc/sys/kernel/nmi_watchdog
	# VM write back timeout
	[ -e /proc/sys/vm/dirty_writeback_centisecs ] &&
	echo ${VMW} >/proc/sys/vm/dirty_writeback_centisecs


	[ "${PROFILE_POWER}" = "network" ] || return
	local iface running
	for iface in $(ifconfig | sed -nre 's/(^[ew].*[0-9]{1}):.*/\1/p'); do
		running="$(ifconfig $iface | sed -nre /$iface/'s/.*(RUNNING).*/\1/p')"
		[ -n "$running" ] || ifconfig "$iface" down
	done
}
start_test()
{
	local file=/sys/class/power_supply/AC0/online state
	if [ ! -r ${file} ]; then
		echo "adp"
		return 0
	fi
	read state <${file}
	case "${state}" in
		(0) printf "bat";;
		(*) printf"adp";;
	esac
}

start_adp()
{
	hprofile disk.adp
	start
	xbl
}
start_bat()
{
	hprofile disk.bat
	start "powersave" "auto" "auto" "min_power" "1" "0" "1500" "powersave"
	xbl 10 200 200 300
}
start_dyn()
{
	hprofile disk.dyn
	start "performance" "on" "on" "mix_power" "0" "1" "500" "performance"
	xbl 30 400 500 600
}
start_med()
{
	hprofile disk.adp
	start "performance" "on" "on" "min_power" "0" "1" "500" "performance"
	xbl 15 150 200 300
}
start_quiet()
{
	hprofile disk.quiet
	start "powersave" "auto" "auto" "min_power" "1" "0" "2500" "powersave"
	xbl 15 150 200 300
}

#
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#