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Diffstat (limited to 'src/cpu/samsung/exynos5250/exynos-tmu.h')
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diff --git a/src/cpu/samsung/exynos5250/exynos-tmu.h b/src/cpu/samsung/exynos5250/exynos-tmu.h
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+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Akshay Saraswat <Akshay.s@samsung.com>
+ *
+ * EXYNOS - 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 __EXYNOS_TMU_H
+#define __EXYNOS_TMU_H
+
+struct tmu_reg {
+ unsigned triminfo;
+ unsigned rsvd1;
+ unsigned rsvd2;
+ unsigned rsvd3;
+ unsigned rsvd4;
+ unsigned triminfo_control;
+ unsigned rsvd5;
+ unsigned rsvd6;
+ unsigned tmu_control;
+ unsigned rsvd7;
+ unsigned tmu_status;
+ unsigned sampling_internal;
+ unsigned counter_value0;
+ unsigned counter_value1;
+ unsigned rsvd8;
+ unsigned rsvd9;
+ unsigned current_temp;
+ unsigned rsvd10;
+ unsigned rsvd11;
+ unsigned rsvd12;
+ unsigned threshold_temp_rise;
+ unsigned threshold_temp_fall;
+ unsigned rsvd13;
+ unsigned rsvd14;
+ unsigned past_temp3_0;
+ unsigned past_temp7_4;
+ unsigned past_temp11_8;
+ unsigned past_temp15_12;
+ unsigned inten;
+ unsigned intstat;
+ unsigned intclear;
+ unsigned rsvd15;
+ unsigned emul_con;
+};
+
+enum tmu_status_t {
+ TMU_STATUS_INIT = 0,
+ TMU_STATUS_NORMAL,
+ TMU_STATUS_WARNING,
+ TMU_STATUS_TRIPPED,
+};
+
+/* Tmeperature threshold values for various thermal events */
+struct temperature_params {
+ /* minimum value in temperature code range */
+ unsigned int min_val;
+ /* maximum value in temperature code range */
+ unsigned int max_val;
+ /* temperature threshold to start warning */
+ unsigned int start_warning;
+ /* temperature threshold CPU tripping */
+ unsigned int start_tripping;
+ /* temperature threshold for HW tripping */
+ unsigned int hardware_tripping;
+};
+
+/* Pre-defined values and thresholds for calibration of current temperature */
+struct tmu_data {
+ /* pre-defined temperature thresholds */
+ struct temperature_params ts;
+ /* pre-defined efuse range minimum value */
+ unsigned int efuse_min_value;
+ /* pre-defined efuse value for temperature calibration */
+ unsigned int efuse_value;
+ /* pre-defined efuse range maximum value */
+ unsigned int efuse_max_value;
+ /* current temperature sensing slope */
+ unsigned int slope;
+};
+
+/* TMU device specific details and status */
+struct tmu_info {
+ /* base Address for the TMU */
+ unsigned tmu_base;
+ /* mux Address for the TMU */
+ int tmu_mux;
+ /* pre-defined values for calibration and thresholds */
+ struct tmu_data data;
+ /* value required for triminfo_25 calibration */
+ unsigned int te1;
+ /* value required for triminfo_85 calibration */
+ unsigned int te2;
+ /* TMU DC value for threshold calculation */
+ int dc_value;
+ /* enum value indicating status of the TMU */
+ int tmu_state;
+};
+
+extern struct tmu_info *tmu_info;
+
+/*
+ * Monitors status of the TMU device and exynos temperature
+ *
+ * @info pointer to TMU info struct
+ * @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(struct tmu_info *info, int *temp);
+
+/*
+ * Initialize TMU device
+ *
+ * @info pointer to TMU info struct
+ * @return int value, 0 for success
+ */
+int tmu_init(struct tmu_info *info);
+
+#endif /* EXYNOS_TMU_H */