Exynos5: TMU: Add driver for Thermal Management Unit

Adding Exynos Thermal Management Unit driver to monitor SOC
temperature and take actions corresponding to states of TMU.

Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/include/tmu.h b/include/tmu.h
new file mode 100644
index 0000000000..da07a2211e
--- /dev/null
+++ b/include/tmu.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ *      http://www.samsung.com
+ * Akshay Saraswat <akshay.s@samsung.com>
+ *
+ * Thermal Management Unit
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ * 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 _TMU_H
+#define _TMU_H
+
+enum tmu_status_t {
+	TMU_STATUS_INIT = -1,
+	TMU_STATUS_NORMAL = 0,
+	TMU_STATUS_WARNING,
+	TMU_STATUS_TRIPPED,
+};
+
+/*
+ * Monitors status of the TMU device and exynos temperature
+ *
+ * @param temp	pointer to the current temperature value
+ * @return	enum tmu_status_t value, code indicating event to execute
+ *		and -1 on error
+ */
+enum tmu_status_t tmu_monitor(int *temp);
+
+/*
+ * Initialize TMU device
+ *
+ * @param blob  FDT blob
+ * @return	int value, 0 for success
+ */
+int tmu_init(const void *blob);
+#endif	/* _THERMAL_H_ */