1 files changed, 77 insertions, 0 deletions
diff --git a/include/linux/therm_est.h b/include/linux/therm_est.h
new file mode 100644
index 000000000000..035b08fa9813
--- /dev/null
+++ b/include/linux/therm_est.h
@@ -0,0 +1,77 @@
+/*
+ * include/linux/therm_est.h
+ *
+ * Copyright (c) 2010-2012, NVIDIA Corporation.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#ifndef _LINUX_THERM_EST_H
+#define _LINUX_THERM_EST_H
+
+#include <linux/workqueue.h>
+
+#define HIST_LEN (20)
+
+struct therm_est_subdevice {
+	void *dev_data;
+	int (*get_temp)(void *, long *);
+	long coeffs[HIST_LEN];
+	long hist[HIST_LEN];
+};
+
+struct therm_estimator {
+	long therm_est_lo_limit;
+	long therm_est_hi_limit;
+	void (*callback)(void *);
+	void *callback_data;
+	long cur_temp;
+	long polling_period;
+	struct workqueue_struct *workqueue;
+	struct delayed_work therm_est_work;
+	long toffset;
+	int ntemp;
+	int ndevs;
+	struct therm_est_subdevice **devs;
+};
+
+#ifdef CONFIG_THERM_EST
+struct therm_estimator *therm_est_register(
+			struct therm_est_subdevice **devs,
+			int ndevs,
+			long toffset,
+			long pperiod);
+int therm_est_get_temp(struct therm_estimator *est, long *temp);
+int therm_est_set_limits(struct therm_estimator *est,
+			long lo_limit,
+			long hi_limit);
+int therm_est_set_alert(struct therm_estimator *est,
+			void (*cb)(void *),
+			void *cb_data);
+#else
+static inline struct therm_estimator *therm_est_register(
+			struct therm_est_subdevice **devs,
+			int ndevs,
+			long toffset,
+			long pperiod)
+{ return NULL; }
+static inline int therm_est_get_temp(struct therm_estimator *est, long *temp)
+{ return -EINVAL; }
+static inline int therm_est_set_limits(struct therm_estimator *est,
+			long lo_limit,
+			long hi_limit)
+{ return -EINVAL; }
+static inline int therm_est_set_alert(struct therm_estimator *est,
+			void (*cb)(void *),
+			void *cb_data)
+{ return -EINVAL; }
+#endif
+#endif /* _LINUX_THERM_EST_H */