1 files changed, 55 insertions, 0 deletions
diff --git a/pcr/phc-intel-dkms/phc-intel.sh b/pcr/phc-intel-dkms/phc-intel.sh
new file mode 100644
index 000000000..cce4bf96a
--- /dev/null
+++ b/pcr/phc-intel-dkms/phc-intel.sh
@@ -0,0 +1,55 @@
+#!/bin/bash -e
+shopt -s nullglob
+
+case "$1" in
+start)
+	. /etc/default/phc-intel
+	if [ -z "$VIDS" ]; then
+		echo '=> Please edit /etc/default/phc-intel'
+		exit 1
+	fi
+	echo ':: Setting PHC VIDs'
+	for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+		echo $VIDS > "$i"
+	done
+	;;
+stop)
+	echo ':: Resetting default PHC VIDs'
+	for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+		cp "${i%vids}default_vids" "$i"
+	done
+	;;
+status)
+	check_off () {
+		for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+			[ "$(< "$i")" = "$(< "${i%vids}default_vids")" ] || return;
+		done
+	}
+	check_on () {
+		for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+			[[ "$(< "$i")" =~ "$VIDS" ]] || return;
+		done
+	}
+	echo -n 'PHC status: '
+	. /etc/default/phc-intel
+	if check_off; then
+		echo 'inactive'
+	elif check_on; then
+		echo 'active'
+	else
+		echo 'unknown'
+	fi
+	;;
+set)
+	. /etc/default/phc-intel
+	[ -z "$VIDS" ] && exit
+	for i in $(< /proc/cmdline); do
+		[ $i = nophc ] && exit
+	done
+	for i in /sys/devices/system/cpu/cpu*/cpufreq/phc_vids; do
+		echo $VIDS > "$i"
+	done
+	;;
+*)
+	echo "usage: $0 {start|stop|status|set}"
+esac