msi_fan_control.sh

#!/bin/bash

# MSI Fan Monitor and Cooler Boost Control
# Tested on GL65 Leopard 9SCXK (firmware 16U8EMS2.100)

EC_DEVICE="/dev/ec0"

# Register addresses (verified for 16U8 firmware)
REG_CPU_TEMP=104     # 0x68
REG_CPU_FAN=112      # 0x70
REG_GPU_TEMP=128     # 0x80
REG_GPU_FAN=136      # 0x88
REG_COOLER_BOOST=152 # 0x98

check_root() {
    [ "$EUID" -ne 0 ] && { echo "Error: Run as root"; exit 1; }
}

check_ec() {
    [ ! -c "$EC_DEVICE" ] && { echo "Error: $EC_DEVICE not found"; exit 1; }
}

ec_read() {
    dd if="$EC_DEVICE" bs=1 count=1 skip="$1" 2>/dev/null | od -An -tu1 | tr -d ' '
}

get_status() {
    local cpu_temp=$(ec_read $REG_CPU_TEMP)
    local cpu_fan=$(ec_read $REG_CPU_FAN)
    local gpu_temp=$(ec_read $REG_GPU_TEMP)
    local gpu_fan=$(ec_read $REG_GPU_FAN)
    local boost=$(ec_read $REG_COOLER_BOOST)

    echo "MSI Fan Status"
    echo "=============="
    echo "CPU: ${cpu_temp}C @ ${cpu_fan}%"
    echo "GPU: ${gpu_temp}C @ ${gpu_fan}%"
    [ "$boost" -ge 128 ] && echo "Cooler Boost: ON" || echo "Cooler Boost: OFF"
}

boost_on() {
    echo -ne "\x80" | dd of="$EC_DEVICE" bs=1 count=1 seek=$REG_COOLER_BOOST 2>/dev/null
    sleep 0.5
    [ "$(ec_read $REG_COOLER_BOOST)" -ge 128 ] && echo "Cooler Boost: ON" || echo "Failed"
}

boost_off() {
    echo -ne "\x00" | dd of="$EC_DEVICE" bs=1 count=1 seek=$REG_COOLER_BOOST 2>/dev/null
    sleep 0.5
    [ "$(ec_read $REG_COOLER_BOOST)" -lt 128 ] && echo "Cooler Boost: OFF" || echo "Failed"
}

monitor() {
    local interval=${1:-2}
    while true; do
        clear
        get_status
        sleep $interval
    done
}

usage() {
    cat << EOF
Usage: $0 <command>

Commands:
  status     Show temps and fan speeds
  monitor    Live monitoring
  boost-on   Enable Cooler Boost
  boost-off  Disable Cooler Boost

Examples:
  sudo $0 status
  sudo $0 boost-on
EOF
}

check_root
check_ec

case "$1" in
    status)          get_status ;;
    monitor)         monitor "$2" ;;
    boost-on|on)     boost_on ;;
    boost-off|off)   boost_off ;;
    *)               usage; exit 1 ;;
esac