Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c
new file mode 100644
index 000000000..78a651038
--- /dev/null
+++ b/drivers/cpufreq/cpufreq_powersave.c
@@ -0,0 +1,55 @@
+/*
+ * linux/drivers/cpufreq/cpufreq_powersave.c
+ *
+ * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/cpufreq.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy)
+{
+	pr_debug("setting to %u kHz\n", policy->min);
+	__cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
+}
+
+static struct cpufreq_governor cpufreq_gov_powersave = {
+	.name		= "powersave",
+	.limits		= cpufreq_gov_powersave_limits,
+	.owner		= THIS_MODULE,
+};
+
+static int __init cpufreq_gov_powersave_init(void)
+{
+	return cpufreq_register_governor(&cpufreq_gov_powersave);
+}
+
+static void __exit cpufreq_gov_powersave_exit(void)
+{
+	cpufreq_unregister_governor(&cpufreq_gov_powersave);
+}
+
+MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
+MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
+MODULE_LICENSE("GPL");
+
+#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
+struct cpufreq_governor *cpufreq_default_governor(void)
+{
+	return &cpufreq_gov_powersave;
+}
+
+fs_initcall(cpufreq_gov_powersave_init);
+#else
+module_init(cpufreq_gov_powersave_init);
+#endif
+module_exit(cpufreq_gov_powersave_exit);