powersave

#!/bin/bash

# reduce power usage in default configuration

# load dependencies
plugin_load systemctl || return 1
plugin_load config || return 1
plugin_load run || return 1


function rpi_powersave_prerun() {
    true
}

function rpi_powersave_run() {
    local disable_services=(
        "avahi-daemon" "avahi-daemon.socket"
        "triggerhappy"
        "bluetooth" "hciuart" "bluetooth.target"
        "dbus"
        "keyboard-setup"
        "cryptsetup.target"
        "nfs-client.target"
        "apt-daily-upgrade.timer" "apt-daily.timer" "man-db.timer"
        "wpa_supplicant"
    )
    # prefix disable_services with "disable "
    IFS=" "
    RPI_SYSTEMCTL_CMDS="disable ${disable_services[*]}" plugin_run systemctl || error "disable ${_}"

    # turn off unneeded things
    export RPI_CONFIG_ADD=(
        "dtparam=audio=off"
        "disable_auto_turbo=1"
        "dtoverlay=disable-bt"
        "dtparam=i2c_arm=off"
        "dtparam=i2s=off"
        "dtparam=spi=off"
        "start_x=0"
    )
    plugin_run config || error "config.txt modification"

    # turn off HDMI
    rpi_run_on_boot "# turn off HDMI" || error "run_on_boot"
    rpi_run_on_boot "/usr/bin/tvservice -o" || error "run_on_boot"
    # turn on USB power saving
    rpi_run_on_boot "# usb power saving" || error "run_on_boot"
    rpi_run_on_boot "echo 'auto' > '/sys/bus/usb/devices/usb1/power/control'" || error "run_on_boot"

}

function rpi_powersave_description() {
    echo "configure image for optimized power usage"
}