From 6d7e92052f44af7e10a7f0ab66d23ff163179780 Mon Sep 17 00:00:00 2001
From: Przemek Grondek <przemek@grondek.pl>
Date: Wed, 26 Oct 2022 01:18:13 +0200
Subject: [PATCH] WIP Laptop power

---
 .../files/etc/udev/rules.d/99-powersave.rules |  2 ++
 .../files/usr/local/sbin/power-saver-mode     | 14 ++++++++++
 .../files/usr/local/sbin/unlimited-power      | 26 +++++++++++++++++++
 roles/laptop/tasks/powersave.yml              | 24 +++++++++++++++++
 4 files changed, 66 insertions(+)
 create mode 100644 roles/laptop/files/etc/udev/rules.d/99-powersave.rules
 create mode 100644 roles/laptop/files/usr/local/sbin/power-saver-mode
 create mode 100644 roles/laptop/files/usr/local/sbin/unlimited-power
 create mode 100644 roles/laptop/tasks/powersave.yml

diff --git a/roles/laptop/files/etc/udev/rules.d/99-powersave.rules b/roles/laptop/files/etc/udev/rules.d/99-powersave.rules
new file mode 100644
index 0000000..060eee5
--- /dev/null
+++ b/roles/laptop/files/etc/udev/rules.d/99-powersave.rules
@@ -0,0 +1,2 @@
+SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/usr/local/sbin/power-saver-mode"
+SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/usr/local/sbin/unlimited-power"
\ No newline at end of file
diff --git a/roles/laptop/files/usr/local/sbin/power-saver-mode b/roles/laptop/files/usr/local/sbin/power-saver-mode
new file mode 100644
index 0000000..e999f97
--- /dev/null
+++ b/roles/laptop/files/usr/local/sbin/power-saver-mode
@@ -0,0 +1,14 @@
+#!/usr/bin/env sh
+
+# Enable back all CPUs
+echo 1 | tee /sys/devices/system/cpu/cpu[2-7]/online
+echo 1 | tee /sys/devices/system/cpu/cpu1[0-5]/online
+
+# Set CPU to governor to powersave
+cpupower frequency-set --governor ondemand
+
+# Set brightness to 120 / 255
+echo 200 | tee /sys/class/backlight/amdgpu_bl0/brightness
+
+# Enable bluetooth
+rfkill unblock bluetooth
diff --git a/roles/laptop/files/usr/local/sbin/unlimited-power b/roles/laptop/files/usr/local/sbin/unlimited-power
new file mode 100644
index 0000000..dd3cd7e
--- /dev/null
+++ b/roles/laptop/files/usr/local/sbin/unlimited-power
@@ -0,0 +1,26 @@
+#!/usr/bin/env sh
+
+# Limit 8C/16T CPU to 2C/4T
+echo 0 | tee /sys/devices/system/cpu/cpu[2-7]/online
+echo 0 | tee /sys/devices/system/cpu/cpu1[0-5]/online
+
+# Set CPU to governor to powersave
+cpupower frequency-set --governor powersave
+
+# Set brightness to 120 / 255
+echo 120 | tee /sys/class/backlight/amdgpu_bl0/brightness
+
+# Disable bluetooth
+rfkill block bluetooth
+
+# TODO disable some services
+# systemctl disable containerd.service
+# systemctl disable docker.service
+# systemctl disable bluetooth.service
+# systemctl disable libvirtd.service
+# systemctl disable winbind.service
+# systemctl disable snapd.service
+# systemctl disable cups.service
+# systemctl disable avahi-daemon.service
+
+# TODO exit steam
diff --git a/roles/laptop/tasks/powersave.yml b/roles/laptop/tasks/powersave.yml
new file mode 100644
index 0000000..01bcc64
--- /dev/null
+++ b/roles/laptop/tasks/powersave.yml
@@ -0,0 +1,24 @@
+- name: install required packages for script
+  become: yes
+  apt:
+    update_cache: yes
+    pkg:
+      - linux-tools-common
+      - linux-tools-generic
+
+- name: copy scripts
+  become: yes
+  copy:
+    src: "usr/local/sbin/{{item}}"
+    dest: "/usr/local/sbin/{{item}}"
+    mode: '0755'
+  loop:
+    - power-saver-mode
+    - unlimited-power
+
+- name: add udev rules
+  become: yes
+  copy:
+    src: etc/udev/rules.d/99-powersave.rules
+    dest: /etc/udev/rules.d/99-powersave.rules
+    mode: '0755'