mvebu: temporary el cheapo' fan control script

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 44153

target/linux/mvebu/base-files/etc/crontabs/root

@@ -0,0 +1 @@
+*/5 * * * * /sbin/fan_ctrl.sh

target/linux/mvebu/base-files/sbin/fan_ctrl.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+CPU_TEMP=`cut -c1-2 /sys/class/hwmon/hwmon2/temp1_input`
+DDR_TEMP=`cut -c1-2 /sys/class/hwmon/hwmon1/temp1_input`
+WIFI_TEMP=`cut -c1-2 /sys/class/hwmon/hwmon1/temp2_input`
+
+CPU_LOW=85
+CPU_HIGH=95
+DDR_LOW=65
+DDR_HIGH=75
+WIFI_LOW=100
+WIFI_HIGH=115
+
+if [ "$CPU_TEMP" -ge "$CPU_HIGH" -o "$DDR_TEMP" -ge "$DDR_HIGH" -o "$WIFI_TEMP" -ge "$WIFI_HIGH" ];then
+	echo "255" > /sys/devices/pwm_fan/hwmon/hwmon0/pwm1
+elif [ "$CPU_TEMP" -ge "$CPU_LOW" -o "$DDR_TEMP" -ge "$DDR_LOW" -o "$WIFI_TEMP" -ge "$WIFI_LOW" ];then
+	echo "100" > /sys/devices/pwm_fan/hwmon/hwmon0/pwm1
+else
+	echo "0" > /sys/devices/pwm_fan/hwmon/hwmon0/pwm1
+fi