#!/bin/sh
#
# Script to control the fans on the xtm5.
# The W83792G is accessed via the smbus @0x5e.
#
# SteveW 20/11/2019
#

# Variables
smb_dev="/dev/null"
#fan_speed=0
#start_speed=96
minimum_speed=0x85
#maximum_speed=255
interval=2
hysteresis=1
ramp_rate=2
target_temp=0x32
verbose=true
#coretemp=0

# Load required modules if they are not loaded
for mod in ichsmb smb coretemp; do
    kldstat | grep " $mod.ko" > /dev/null
        if [ $? -eq 1 ]
            then
            kldload $mod
            $verbose && echo "$mod loaded"
            else
            $verbose && echo "$mod already loaded"
        fi
done

# Test we can "see" the fan controller on the smbus

    if [ "$(smbmsg -f /dev/smb0 -s 0x5e -c 0x58 -i 1)" = 0x7a ]
        then
        smb_dev="/dev/smb0"
        $verbose && echo "Found W83792G on $smb_dev"
        else
            if [ "$(smbmsg -f /dev/smb1 -s 0x5e -c 0x58 -i 1)" = 0x7a ]
            then
            smb_dev="/dev/smb1"
            $verbose && echo "Found W83792G on $smb_dev"
            else
            echo "W83792G not found"
            exit 1
            fi
    fi

# Set minimum fan speed
smbmsg -f $smb_dev -s 0x5e -c 0x88 -o 1 $minimum_speed
$verbose && echo "Minimum fan speed set to $minimum_speed"

# Set target temperature
smbmsg -f $smb_dev -s 0x5e -c 0x85 -o 1 $target_temp
$verbose && echo "Target temperature set to $target_temp"

# Set step_down and step_up values
smbmsg -f $smb_dev -s 0x5e -c 0x8e -o 1 0x1e
smbmsg -f $smb_dev -s 0x5e -c 0x8f -o 1 0x14
$verbose && echo "Ser ramp rates"

# Set system fan to 68
/root/WGXepc64 -f2 68