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rockchip: fix fan control for r2c plus #14

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23239c1
rockchip: fix fan control for r2c plus
Howard20181 Dec 1, 2023
3ea236f
Merge branch 'master-v23.05' into patch-3
Howard20181 May 11, 2025
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71 changes: 35 additions & 36 deletions target/linux/rockchip/armv8/base-files/usr/bin/fa-fancontrol-direct.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -5,30 +5,30 @@ if [ -d /sys/devices/platform/pwm-fan ]; then
echo "pls use /usr/bin/fa-fancontrol.sh."
exit 1
fi

if [ ! -d /sys/class/pwm/pwmchip1 ]; then
PWMCHIP="/sys/class/pwm/pwmchip1"
[ "$1" ] && PWMCHIP="$1"
if [ ! -d "$PWMCHIP" ]; then
echo "this model does not support pwm."
exit 1
fi
if [ ! -d /sys/class/pwm/pwmchip1/pwm0 ]; then
echo 0 > /sys/class/pwm/pwmchip1/export
if [ ! -d "$PWMCHIP/pwm0" ]; then
echo 0 >"$PWMCHIP/export"
fi
sleep 1
while [ ! -d /sys/class/pwm/pwmchip1/pwm0 ];
do
while [ ! -d "$PWMCHIP/pwm0" ]; do
sleep 1
done
ISENABLE=`cat /sys/class/pwm/pwmchip1/pwm0/enable`
if [ $ISENABLE -eq 1 ]; then
echo 0 > /sys/class/pwm/pwmchip1/pwm0/enable
ISENABLE=$(cat "$PWMCHIP/pwm0/enable")
if [ "$ISENABLE" -eq 1 ]; then
echo 0 >"$PWMCHIP/pwm0/enable"
fi
echo 50000 > /sys/class/pwm/pwmchip1/pwm0/period
echo 1 > /sys/class/pwm/pwmchip1/pwm0/enable
echo 50000 >"$PWMCHIP/pwm0/period"
echo 1 >"$PWMCHIP/pwm0/enable"

# max speed run 5s
echo 46990 > /sys/class/pwm/pwmchip1/pwm0/duty_cycle
echo 46990 >"$PWMCHIP/pwm0/duty_cycle"
sleep 5
echo 25000 > /sys/class/pwm/pwmchip1/pwm0/duty_cycle
echo 25000 >"$PWMCHIP/pwm0/duty_cycle"

# declare -a CpuTemps=(55000 43000 38000 32000)
# declare -a PwmDutyCycles=(1000 20000 30000 45000)
Expand All @@ -40,30 +40,29 @@ declare -a Percents=(100 75 50 25)
DefaultDuty=49990
DefaultPercents=0

while true
do
temp=$(cat /sys/class/thermal/thermal_zone0/temp)
INDEX=0
FOUNDTEMP=0
DUTY=$DefaultDuty
PERCENT=$DefaultPercents

for i in 0 1 2 3; do
if [ $temp -gt ${CpuTemps[$i]} ]; then
INDEX=$i
FOUNDTEMP=1
break
fi
done
if [ ${FOUNDTEMP} == 1 ]; then
DUTY=${PwmDutyCycles[$i]}
PERCENT=${Percents[$i]}
fi
while true; do
temp=$(cat /sys/class/thermal/thermal_zone0/temp)
INDEX=0
FOUNDTEMP=0
DUTY=$DefaultDuty
PERCENT=$DefaultPercents

for i in 0 1 2 3; do
if [ "$temp" -gt "${CpuTemps[$i]}" ]; then
INDEX=$i
FOUNDTEMP=1
break
fi
done
if [ ${FOUNDTEMP} == 1 ]; then
DUTY=${PwmDutyCycles[$i]}
PERCENT=${Percents[$INDEX]}
fi

echo $DUTY > /sys/class/pwm/pwmchip1/pwm0/duty_cycle;
echo "$DUTY" >"$PWMCHIP/pwm0/duty_cycle"

# echo "temp: $temp, duty: $DUTY, ${PERCENT}%"
# cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq
# echo "temp: $temp, duty: $DUTY, ${PERCENT}%"
# cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq

sleep 2s;
sleep 2s
done
29 changes: 17 additions & 12 deletions target/linux/rockchip/armv8/base-files/usr/bin/fa-fancontrol.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,35 +2,40 @@

# determine fan controller
if [ -d /sys/devices/platform/pwm-fan ]; then
(cd /sys/devices/virtual/thermal/thermal_zone0 && {
(cd /sys/devices/virtual/thermal/thermal_zone0 && {
logger -p user.info -t "pwmfan" "set the conditions for fan"
[ -f trip_point_3_temp ] && {
# select fan level 1
echo 50000 > trip_point_3_temp
echo 50000 >trip_point_3_temp
}
[ -f trip_point_4_temp ] && {
# select fan level 2-4
echo 55000 > trip_point_4_temp
echo 55000 >trip_point_4_temp
}
})

(cd /sys/devices/virtual/thermal/cooling_device0 && {
TYPE=`cat type`
if [ $TYPE = 'pwm-fan' ]; then
TYPE=$(cat type)
if [ "$TYPE" = 'pwm-fan' ]; then
# run 5s
for i in `seq 1 5`; do
for i in $(seq 1 5); do
logger -p user.info -t "pwmfan" "start to spin ${i}/5"
echo 3 > cur_state
echo 3 >cur_state
sleep 1
done
logger -p user.info -t "pwmfan" "set to auto"
echo 0 > cur_state
echo 0 >cur_state
fi
})
else
logger -p user.info -t "pwmfan" "not found cooling device"
if [ -d /sys/class/pwm/pwmchip1 ]; then
nohup /usr/bin/fa-fancontrol-direct.sh&
fi
i=0
while [ $i -lt 9 ]; do
PWMCHIP="/sys/class/pwm/pwmchip$i"
if [ -d "$PWMCHIP" ]; then
nohup /usr/bin/fa-fancontrol-direct.sh "$PWMCHIP" &
break
fi
i=$((i + 1))
done
fi