From 36162d6931aaaf56c60c2e1c77cd3cdc2eba8363 Mon Sep 17 00:00:00 2001
From: PA4WDH
Date: Sun, 28 Jul 2024 14:45:59 +0200
Subject: Add autodetection for temperature input

---
 cputemp2maxfreq.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

(limited to 'cputemp2maxfreq.c')

diff --git a/cputemp2maxfreq.c b/cputemp2maxfreq.c
index 47b1f53..d3242b6 100644
--- a/cputemp2maxfreq.c
+++ b/cputemp2maxfreq.c
@@ -12,13 +12,14 @@
 #include "version.h"
 #include "argparse.h"
 #include "logger.h"
+#include "cputemp.h"
 
 // Set default config
 struct s_config config={
  "",             // Name of this program, set by argparse
  "conservative", // Governor
  70000,          // Temperature
- "/sys/devices/virtual/thermal/thermal_zone0/temp", // Temperature input
+ "auto",         // Temperature input
  100000,         // Frequency step
  2000000,        // Fallback frequency
  10,             // Interval
@@ -49,7 +50,7 @@ int main(int argc,char **argv)
 {
  long int diff;
  long int newfreq;
-
+ struct s_sensor sensor;
  char *transition_latency_remark;
 
  argparse(argc,argv);
@@ -98,6 +99,30 @@ int main(int argc,char **argv)
   exit(1);
  }
 
+// Autodetect temperature input if needed
+ if (config.temp_input[0]!='/')
+ {
+  if (strcmp(config.temp_input,"auto")==0)
+  {
+   DEBUG1_MAIN("Starting temperature sensor detection with name \"Package id 0\"\n");
+   cputemp_find_sensor("Package id 0",&sensor);
+  } else {
+   DEBUG1_MAIN("Starting temperature sensor detection with name \"%s\"\n",config.temp_input);
+   cputemp_find_sensor(config.temp_input,&sensor);
+  }
+  if (sensor.valid==1)
+  {
+   DEBUG1_MAIN("Found sensor \"%s\"\n",sensor.name);
+   DEBUG1_MAIN("Sensor file: %s\n",sensor.filename);
+   strncpy(config.temp_input,sensor.filename,sizeof(config.temp_input));
+   config.logger("Detection returned temperature input: %s",config.temp_input);
+   config.logger("Temperature input name: %s",sensor.name);
+  } else {
+   config.logger("Detection failed to return a valid sensor, set it using -i");
+   exit(1);
+  }
+ }
+
 // Get and validate CPU data
  cpudata.min_freq=sysfs_read_long_int("/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_min_freq");
  cpudata.max_freq=sysfs_read_long_int("/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq");
-- 
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