msi_fan_curve.sh

#!/bin/bash

# MSI Fan Curve Control
# Tested on GL65 Leopard 9SCXK (firmware 16U8EMS2.100)

EC_DEVICE="/dev/ec0"
BACKUP_DIR="$HOME/acpi_ec/backups"

# EC Register addresses
REG_CPU_TEMP=104     # 0x68
REG_CPU_FAN=112      # 0x70
REG_GPU_TEMP=128     # 0x80
REG_GPU_FAN=136      # 0x88
REG_FAN_MODE=244     # 0xF4
REG_COOLER_BOOST=152 # 0x98

# Curve registers
CPU_TEMP_REGS=(106 107 108 109 110 111)     # 0x6A-0x6F
CPU_FAN_REGS=(114 115 116 117 118 119 120)  # 0x72-0x78
GPU_TEMP_REGS=(130 131 132 133 134 135)     # 0x82-0x87
GPU_FAN_REGS=(138 139 140 141 142 143 144)  # 0x8A-0x90

# Profiles: "temp0,temp1,...,temp5|fan0,fan1,...,fan6"
declare -A PROFILES
PROFILES[silent_cpu]="55,62,70,78,85,90|20,30,45,60,75,90,100"
PROFILES[silent_gpu]="55,62,70,78,85,90|0,35,50,65,80,90,100"
PROFILES[balanced_cpu]="50,58,66,74,82,88|25,40,55,70,85,95,100"
PROFILES[balanced_gpu]="52,60,68,75,82,88|0,40,55,70,85,95,100"
PROFILES[performance_cpu]="45,55,65,75,82,88|35,50,65,80,90,100,100"
PROFILES[performance_gpu]="50,58,66,74,82,88|0,45,60,75,90,100,100"
PROFILES[gaming_cpu]="40,50,60,70,78,85|40,55,70,85,95,100,100"
PROFILES[gaming_gpu]="45,55,62,70,78,85|35,50,65,80,95,100,100"

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 ' '
}

ec_write() {
    local offset=$1 value=$2
    [ "$value" -lt 0 ] || [ "$value" -gt 255 ] && return 1
    printf '%02x' "$value" | xxd -r -p | dd of="$EC_DEVICE" bs=1 count=1 seek="$offset" conv=notrunc 2>/dev/null
    sleep 0.02
    [ "$(ec_read $offset)" -ne "$value" ] && return 1
    return 0
}

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 $REG_GPU_FAN)
    local fan_mode=$(ec_read $REG_FAN_MODE)
    local boost=$(ec_read $REG_COOLER_BOOST)

    echo "MSI Fan Status"
    echo "=============="
    echo "CPU: ${cpu_temp}C @ ${cpu_fan}%"
    echo "GPU: ${gpu_temp}C @ ${gpu_fan}%"
    case $fan_mode in
        140) echo "Mode: Advanced" ;;
        76)  echo "Mode: Basic" ;;
        *)   echo "Mode: $fan_mode" ;;
    esac
    [ "$boost" -ge 128 ] && echo "Cooler Boost: ON" || echo "Cooler Boost: OFF"
}

show_curve() {
    echo "CPU Curve:"
    printf "  Temp: "
    for reg in "${CPU_TEMP_REGS[@]}"; do printf "%3dC " $(ec_read $reg); done
    echo ""
    printf "  Fan:  "
    for reg in "${CPU_FAN_REGS[@]}"; do printf "%3d%% " $(ec_read $reg); done
    echo ""
    echo "GPU Curve:"
    printf "  Temp: "
    for reg in "${GPU_TEMP_REGS[@]}"; do printf "%3dC " $(ec_read $reg); done
    echo ""
    printf "  Fan:  "
    for reg in "${GPU_FAN_REGS[@]}"; do printf "%3d%% " $(ec_read $reg); done
    echo ""
}

backup_curve() {
    local file=${1:-"$BACKUP_DIR/curve_$(date +%Y%m%d_%H%M%S).txt"}
    mkdir -p "$BACKUP_DIR"
    {
        echo "# Fan curve backup - $(date)"
        echo "FAN_MODE=$(ec_read $REG_FAN_MODE)"
        for i in ${!CPU_TEMP_REGS[@]}; do echo "CPU_TEMP_$i=$(ec_read ${CPU_TEMP_REGS[$i]})"; done
        for i in ${!CPU_FAN_REGS[@]}; do echo "CPU_FAN_$i=$(ec_read ${CPU_FAN_REGS[$i]})"; done
        for i in ${!GPU_TEMP_REGS[@]}; do echo "GPU_TEMP_$i=$(ec_read ${GPU_TEMP_REGS[$i]})"; done
        for i in ${!GPU_FAN_REGS[@]}; do echo "GPU_FAN_$i=$(ec_read ${GPU_FAN_REGS[$i]})"; done
    } > "$file"
    echo "Saved: $file"
}

restore_curve() {
    [ ! -f "$1" ] && { echo "Error: File not found: $1"; return 1; }
    source "$1"
    ec_write $REG_FAN_MODE $FAN_MODE
    for i in ${!CPU_TEMP_REGS[@]}; do eval "ec_write ${CPU_TEMP_REGS[$i]} \$CPU_TEMP_$i"; done
    for i in ${!CPU_FAN_REGS[@]}; do eval "ec_write ${CPU_FAN_REGS[$i]} \$CPU_FAN_$i"; done
    for i in ${!GPU_TEMP_REGS[@]}; do eval "ec_write ${GPU_TEMP_REGS[$i]} \$GPU_TEMP_$i"; done
    for i in ${!GPU_FAN_REGS[@]}; do eval "ec_write ${GPU_FAN_REGS[$i]} \$GPU_FAN_$i"; done
    echo "Restored from: $1"
}

apply_profile() {
    local profile=$1
    [ -z "${PROFILES[${profile}_cpu]}" ] && { echo "Unknown profile: $profile"; return 1; }

    echo "Applying $profile profile..."
    ec_write $REG_FAN_MODE 140

    local cpu_profile=${PROFILES[${profile}_cpu]}
    IFS='|' read -r cpu_temps cpu_fans <<< "$cpu_profile"
    IFS=',' read -ra temps <<< "$cpu_temps"
    IFS=',' read -ra fans <<< "$cpu_fans"
    for i in ${!temps[@]}; do ec_write ${CPU_TEMP_REGS[$i]} ${temps[$i]}; done
    for i in ${!fans[@]}; do ec_write ${CPU_FAN_REGS[$i]} ${fans[$i]}; done

    local gpu_profile=${PROFILES[${profile}_gpu]}
    IFS='|' read -r gpu_temps gpu_fans <<< "$gpu_profile"
    IFS=',' read -ra temps <<< "$gpu_temps"
    IFS=',' read -ra fans <<< "$gpu_fans"
    for i in ${!temps[@]}; do ec_write ${GPU_TEMP_REGS[$i]} ${temps[$i]}; done
    for i in ${!fans[@]}; do ec_write ${GPU_FAN_REGS[$i]} ${fans[$i]}; done

    echo "Done"
    show_curve
}

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

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

Commands:
  status              Show temps and fan speeds
  curve               Show current fan curve
  apply <profile>     Apply profile (silent|balanced|performance|gaming)
  backup [file]       Backup current curve
  restore <file>      Restore curve from backup
  monitor [interval]  Live monitoring

Examples:
  sudo $0 status
  sudo $0 apply performance
EOF
}

check_root
check_ec

case "$1" in
    status)   get_status ;;
    curve)    show_curve ;;
    apply)    apply_profile "$2" ;;
    backup)   backup_curve "$2" ;;
    restore)  restore_curve "$2" ;;
    monitor)  monitor "$2" ;;
    *)        usage; exit 1 ;;
esac