From 498aa5782a9859ca39f05e04dd9ec9d6abd7207e Mon Sep 17 00:00:00 2001
From: baiywt <baiywt_gj@163.com>
Date: Tue, 28 Dec 2021 16:58:37 +0800
Subject: [PATCH] Add pwm-fan.sh for Orange Pi R1 Plus LTS

---
 .../config/sources/families/rockchip64.conf   |  1 +
 external/packages/blobs/rockchip/pwm-fan.sh   | 64 +++++++++++++++++++
 .../orangepi/orangepi-hardware-optimization   |  3 +
 3 files changed, 68 insertions(+)
 create mode 100755 external/packages/blobs/rockchip/pwm-fan.sh

diff --git a/external/config/sources/families/rockchip64.conf b/external/config/sources/families/rockchip64.conf
index 5bef67b..ce5e507 100644
--- a/external/config/sources/families/rockchip64.conf
+++ b/external/config/sources/families/rockchip64.conf
@@ -8,6 +8,7 @@ family_tweaks_bsp()
         if [[ $BOARD =~ orangepir1plus|orangepir1plus-lts ]]; then
 
 		install -m 755 $EXTER/packages/blobs/rockchip/set_r1plus_lan_mac.sh $destination/usr/bin/
+		install -m 755 $EXTER/packages/blobs/rockchip/pwm-fan.sh $destination/usr/bin/
         fi
 }
 
diff --git a/external/packages/blobs/rockchip/pwm-fan.sh b/external/packages/blobs/rockchip/pwm-fan.sh
new file mode 100755
index 0000000..251c61a
--- /dev/null
+++ b/external/packages/blobs/rockchip/pwm-fan.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+
+if [ ! -d /sys/class/pwm/pwmchip0 ]; then
+    echo "this model does not support pwm."
+    exit 1
+fi
+
+if [ ! -d /sys/class/pwm/pwmchip0/pwm0 ]; then
+    echo -n 0 > /sys/class/pwm/pwmchip0/export
+fi
+sleep 1
+while [ ! -d /sys/class/pwm/pwmchip0/pwm0 ];
+do
+    sleep 1
+done
+ISENABLE=`cat /sys/class/pwm/pwmchip0/pwm0/enable`
+if [ $ISENABLE -eq 1 ]; then
+    echo -n 0 > /sys/class/pwm/pwmchip0/pwm0/enable
+fi
+echo -n 1000000 > /sys/class/pwm/pwmchip0/pwm0/period
+echo -n 1 > /sys/class/pwm/pwmchip0/pwm0/enable
+
+# max speed run 5s
+echo -n 500000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
+sleep 5
+echo -n 500000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
+
+# declare -a CpuTemps=(55000 43000 38000 32000)
+# declare -a PwmDutyCycles=(1000 20000 30000 45000)
+
+declare -a CpuTemps=(75000 63000 58000 52000)
+declare -a PwmDutyCycles=(500000 650000 800000 950000)
+
+declare -a Percents=(100 75 50 25)
+DefaultDuty=999990
+DefaultPercents=0
+
+while true
+do
+	temp=$(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
+
+	echo -n $DUTY > /sys/class/pwm/pwmchip0/pwm0/duty_cycle;
+
+        # echo "temp: $temp, duty: $DUTY, ${PERCENT}%"
+        # cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq
+
+	sleep 2s;
+done
diff --git a/external/packages/bsp/common/usr/lib/orangepi/orangepi-hardware-optimization b/external/packages/bsp/common/usr/lib/orangepi/orangepi-hardware-optimization
index 07a8afa..12b25fa 100755
--- a/external/packages/bsp/common/usr/lib/orangepi/orangepi-hardware-optimization
+++ b/external/packages/bsp/common/usr/lib/orangepi/orangepi-hardware-optimization
@@ -95,6 +95,9 @@ prepare_board() {
 			rfkill unblock all
 			/usr/bin/hciattach_opi -n -s 1500000 /dev/ttyBT0 sprd &
 			;;
+		orangepir1plus|orangepir1plus-lts)
+			/usr/bin/pwm-fan.sh &
+			;;
 		orangepizero2|orangepizero2-lts|orangepizero2-b)
 			if [[ $BRANCH == current ]]; then
 				# Initial hdmi audio