f5576e3a9e
This patch is a preparatory patch to be able to read Exynos thermal configuration from the device tree. It turned out that DTC is not able to interpret enums properly and hence it is necessary to #define those values explicitly. For this reason the ./include/dt-bindings/thermal/thermal_exynos.h file has been introduced. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
139 lines
5.0 KiB
C
139 lines
5.0 KiB
C
/*
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* exynos_tmu.h - Samsung EXYNOS 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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* Amit Daniel Kachhap <amit.daniel@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 _EXYNOS_TMU_H
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#define _EXYNOS_TMU_H
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#include <linux/cpu_cooling.h>
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#include "exynos_thermal_common.h"
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enum soc_type {
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SOC_ARCH_EXYNOS3250 = 1,
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SOC_ARCH_EXYNOS4210,
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SOC_ARCH_EXYNOS4412,
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SOC_ARCH_EXYNOS5250,
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SOC_ARCH_EXYNOS5260,
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SOC_ARCH_EXYNOS5420,
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SOC_ARCH_EXYNOS5420_TRIMINFO,
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SOC_ARCH_EXYNOS5440,
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};
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#include <dt-bindings/thermal/thermal_exynos.h>
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/**
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* struct exynos_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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* @threshold_falling: differntial value for setting threshold
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* of temperature falling interrupt.
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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_type: defines the type of trigger. Possible values are,
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* THROTTLE_ACTIVE trigger type
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* THROTTLE_PASSIVE trigger type
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* SW_TRIP trigger type
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* HW_TRIP
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* @trigger_enable[]: array to denote which trigger levels are enabled.
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* 1 = enable trigger_level[] interrupt,
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* 0 = disable trigger_level[] interrupt
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* @max_trigger_level: max trigger level supported by the TMU
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* @non_hw_trigger_levels: number of defined non-hardware trigger levels
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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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* @noise_cancel_mode: noise cancellation mode
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* 000, 100, 101, 110 and 111 can be different modes
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* @type: determines the type of SOC
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* @efuse_value: platform defined fuse value
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* @min_efuse_value: minimum valid trimming data
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* @max_efuse_value: maximum valid trimming data
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* @first_point_trim: temp value of the first point trimming
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* @second_point_trim: temp value of the second point trimming
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* @default_temp_offset: default temperature offset in case of no trimming
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* @cal_type: calibration type for temperature
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* @freq_clip_table: Table representing frequency reduction percentage.
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* @freq_tab_count: Count of the above table as frequency reduction may
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* applicable to only some of the trigger levels.
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*
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* This structure is required for configuration of exynos_tmu driver.
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*/
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struct exynos_tmu_platform_data {
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u8 threshold;
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u8 threshold_falling;
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u8 trigger_levels[MAX_TRIP_COUNT];
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enum trigger_type trigger_type[MAX_TRIP_COUNT];
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bool trigger_enable[MAX_TRIP_COUNT];
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u8 max_trigger_level;
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u8 non_hw_trigger_levels;
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u8 gain;
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u8 reference_voltage;
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u8 noise_cancel_mode;
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u32 efuse_value;
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u32 min_efuse_value;
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u32 max_efuse_value;
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u8 first_point_trim;
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u8 second_point_trim;
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u8 default_temp_offset;
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enum soc_type type;
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u32 cal_type;
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u32 cal_mode;
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struct freq_clip_table freq_tab[4];
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unsigned int freq_tab_count;
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};
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/**
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* struct exynos_tmu_init_data
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* @tmu_count: number of TMU instances.
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* @tmu_data: platform data of all TMU instances.
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* This structure is required to store data for multi-instance exynos tmu
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* driver.
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*/
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struct exynos_tmu_init_data {
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int tmu_count;
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struct exynos_tmu_platform_data tmu_data[];
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};
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extern struct exynos_tmu_init_data const exynos3250_default_tmu_data;
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extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
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extern struct exynos_tmu_init_data const exynos4412_default_tmu_data;
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extern struct exynos_tmu_init_data const exynos5250_default_tmu_data;
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extern struct exynos_tmu_init_data const exynos5260_default_tmu_data;
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extern struct exynos_tmu_init_data const exynos5420_default_tmu_data;
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extern struct exynos_tmu_init_data const exynos5440_default_tmu_data;
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#endif /* _EXYNOS_TMU_H */
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