Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / cpu_cooling.h

diff --git a/kernel/include/linux/cpu_cooling.h b/kernel/include/linux/cpu_cooling.h
new file mode 100644 (file)
index 0000000..bd95527
--- /dev/null
+++ b/kernel/include/linux/cpu_cooling.h
@@ -0,0 +1,88 @@
+/*
+ *  linux/include/linux/cpu_cooling.h
+ *
+ *  Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
+ *  Copyright (C) 2012  Amit Daniel <amit.kachhap@linaro.org>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *  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; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#ifndef __CPU_COOLING_H__
+#define __CPU_COOLING_H__
+
+#include <linux/of.h>
+#include <linux/thermal.h>
+#include <linux/cpumask.h>
+
+#ifdef CONFIG_CPU_THERMAL
+/**
+ * cpufreq_cooling_register - function to create cpufreq cooling device.
+ * @clip_cpus: cpumask of cpus where the frequency constraints will happen
+ */
+struct thermal_cooling_device *
+cpufreq_cooling_register(const struct cpumask *clip_cpus);
+
+/**
+ * of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
+ * @np: a valid struct device_node to the cooling device device tree node.
+ * @clip_cpus: cpumask of cpus where the frequency constraints will happen
+ */
+#ifdef CONFIG_THERMAL_OF
+struct thermal_cooling_device *
+of_cpufreq_cooling_register(struct device_node *np,
+                           const struct cpumask *clip_cpus);
+#else
+static inline struct thermal_cooling_device *
+of_cpufreq_cooling_register(struct device_node *np,
+                           const struct cpumask *clip_cpus)
+{
+       return ERR_PTR(-ENOSYS);
+}
+#endif
+
+/**
+ * cpufreq_cooling_unregister - function to remove cpufreq cooling device.
+ * @cdev: thermal cooling device pointer.
+ */
+void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
+
+unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq);
+#else /* !CONFIG_CPU_THERMAL */
+static inline struct thermal_cooling_device *
+cpufreq_cooling_register(const struct cpumask *clip_cpus)
+{
+       return ERR_PTR(-ENOSYS);
+}
+static inline struct thermal_cooling_device *
+of_cpufreq_cooling_register(struct device_node *np,
+                           const struct cpumask *clip_cpus)
+{
+       return ERR_PTR(-ENOSYS);
+}
+static inline
+void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
+{
+       return;
+}
+static inline
+unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq)
+{
+       return THERMAL_CSTATE_INVALID;
+}
+#endif /* CONFIG_CPU_THERMAL */
+
+#endif /* __CPU_COOLING_H__ */