From 190f21fe32b4be430bb6da28edead3fb45ebdb68 Mon Sep 17 00:00:00 2001
From: Maximilian Luz <luzmaximilian@gmail.com>
Date: Fri, 5 Feb 2021 03:18:16 +0100
Subject: [PATCH] Add system files to set up group access for performance mode

Add a sysusers.d file to create a 'surface-control' group as well as
udev rules to change the group ownership of the sysfs 'perf_mode'
attribute to that group. This group can then be used to change the
performance mode without sudo.
---
 etc/sysusers/surface-control.conf | 1 +
 etc/udev/40-surface-control.rules | 2 ++
 2 files changed, 3 insertions(+)
 create mode 100644 etc/sysusers/surface-control.conf
 create mode 100644 etc/udev/40-surface-control.rules

diff --git a/etc/sysusers/surface-control.conf b/etc/sysusers/surface-control.conf
new file mode 100644
index 0000000..4613fcb
--- /dev/null
+++ b/etc/sysusers/surface-control.conf
@@ -0,0 +1 @@
+g surface-control - -
diff --git a/etc/udev/40-surface-control.rules b/etc/udev/40-surface-control.rules
new file mode 100644
index 0000000..db90d63
--- /dev/null
+++ b/etc/udev/40-surface-control.rules
@@ -0,0 +1,2 @@
+KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chmod 664 /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"
+KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chown root:surface-control /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"