From: Imre Kaloz <kaloz@openwrt.org>
Date: Mon, 26 Jan 2015 20:41:43 +0000 (+0000)
Subject: mvebu: temporary el cheapo' fan control script
X-Git-Tag: reboot~4532
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7be967e954ad5d602a0bc8616f129be7a999ebce;p=openwrt%2Fstaging%2Fxback.git

mvebu: temporary el cheapo' fan control script

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

SVN-Revision: 44153
---

diff --git a/target/linux/mvebu/base-files/etc/crontabs/root b/target/linux/mvebu/base-files/etc/crontabs/root
new file mode 100644
index 0000000000..e692f578bb
--- /dev/null
+++ b/target/linux/mvebu/base-files/etc/crontabs/root
@@ -0,0 +1 @@
+*/5 * * * * /sbin/fan_ctrl.sh
diff --git a/target/linux/mvebu/base-files/sbin/fan_ctrl.sh b/target/linux/mvebu/base-files/sbin/fan_ctrl.sh
new file mode 100755
index 0000000000..f7f4e0598d
--- /dev/null
+++ b/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