1 files changed, 58 insertions, 0 deletions

diff --git a/firmware/target/hosted/cpufreq-linux.h b/firmware/target/hosted/cpufreq-linux.h
new file mode 100644
index 0000000000..f62e0225dd
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+++ b/firmware/target/hosted/cpufreq-linux.h
@@ -0,0 +1,58 @@
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2015 by Udo Schläpfer
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ *
+ * Interface for the Linux CPUFreq kernel modul.
+ * See https://www.kernel.org/doc/Documentation/cpu-freq/
+ *
+ ****************************************************************************/
+
+
+#ifndef __CPUFREQ_LINUX_H__
+#define __CPUFREQ_LINUX_H__
+
+
+#include <stdbool.h>
+
+
+/*
+    Get the available governors for cpu.
+    governors Preallocated string for the available governors. On succes this will look like
+              "performance ondemand powersave", each word beeing a governor that can be used with
+              cpufreq_set_governor.
+    governors_size Size of governors.
+    cpu The cpu, starting with 0, for which to get the available governors. CPUFREQ_ALL_CPUS is not
+        supported, you must supply a cpu. See cpucount_linux in cpuinfo-linux.h.
+*/
+void cpufreq_available_governors(char* governors, int governors_size, int cpu);
+
+
+/*
+    Set the cpufreq governor for cpu.
+    governor The governor to set. This must be one of the available governors returned by
+             cpufreq_available_governors.
+    cpu The cpu, starting with 0, for which to set the governor. CPUFREQ_ALL_CPUS to set
+        the governor for all cpus. See cpucount_linux in cpuinfo-linux.h.
+*/
+void cpufreq_set_governor(const char* governor, int cpu);
+
+
+static const int CPUFREQ_ALL_CPUS = -1;
+
+
+#endif