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9d97e5c81e
This patch allows to read temperature from TMU(Thermal Management Unit) of SAMSUNG EXYNOS4 series of SoC. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
/*
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* exynos4_tmu.h - Samsung EXYNOS4 TMU (Thermal Management Unit)
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*
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* Copyright (C) 2011 Samsung Electronics
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* Donggeun Kim <dg77.kim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LINUX_EXYNOS4_TMU_H
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#define _LINUX_EXYNOS4_TMU_H
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enum calibration_type {
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TYPE_ONE_POINT_TRIMMING,
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TYPE_TWO_POINT_TRIMMING,
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TYPE_NONE,
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};
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/**
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* struct exynos4_tmu_platform_data
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* @threshold: basic temperature for generating interrupt
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* 25 <= threshold <= 125 [unit: degree Celsius]
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* @trigger_levels: array for each interrupt levels
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* [unit: degree Celsius]
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* 0: temperature for trigger_level0 interrupt
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* condition for trigger_level0 interrupt:
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* current temperature > threshold + trigger_levels[0]
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* 1: temperature for trigger_level1 interrupt
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* condition for trigger_level1 interrupt:
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* current temperature > threshold + trigger_levels[1]
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* 2: temperature for trigger_level2 interrupt
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* condition for trigger_level2 interrupt:
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* current temperature > threshold + trigger_levels[2]
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* 3: temperature for trigger_level3 interrupt
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* condition for trigger_level3 interrupt:
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* current temperature > threshold + trigger_levels[3]
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* @trigger_level0_en:
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* 1 = enable trigger_level0 interrupt,
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* 0 = disable trigger_level0 interrupt
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* @trigger_level1_en:
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* 1 = enable trigger_level1 interrupt,
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* 0 = disable trigger_level1 interrupt
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* @trigger_level2_en:
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* 1 = enable trigger_level2 interrupt,
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* 0 = disable trigger_level2 interrupt
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* @trigger_level3_en:
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* 1 = enable trigger_level3 interrupt,
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* 0 = disable trigger_level3 interrupt
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* @gain: gain of amplifier in the positive-TC generator block
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* 0 <= gain <= 15
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* @reference_voltage: reference voltage of amplifier
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* in the positive-TC generator block
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* 0 <= reference_voltage <= 31
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* @cal_type: calibration type for temperature
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*
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* This structure is required for configuration of exynos4_tmu driver.
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*/
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struct exynos4_tmu_platform_data {
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u8 threshold;
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u8 trigger_levels[4];
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bool trigger_level0_en;
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bool trigger_level1_en;
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bool trigger_level2_en;
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bool trigger_level3_en;
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u8 gain;
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u8 reference_voltage;
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enum calibration_type cal_type;
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};
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#endif /* _LINUX_EXYNOS4_TMU_H */
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