156 lines
4.6 KiB
C
Executable File
156 lines
4.6 KiB
C
Executable File
/*
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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 <linux/gpu_cooling.h>
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#include <linux/isp_cooling.h>
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#include <dt-bindings/thermal/thermal_exynos.h>
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#define NR_HOTPLUG_CPUS 4
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#define MCELSIUS 1000
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enum soc_type {
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SOC_ARCH_EXYNOS8890 = 1,
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SOC_ARCH_EXYNOS8895 = 2,
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SOC_ARCH_EXYNOS7872,
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SOC_ARCH_EXYNOS9810,
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SOC_ARCH_EXYNOS9610,
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};
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/**
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* struct exynos_tmu_platform_data
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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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* @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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*
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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 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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u8 first_point_trim;
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u8 second_point_trim;
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u8 default_temp_offset;
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u32 trip_temp;
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enum soc_type type;
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u32 sensor_type;
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u32 cal_type;
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};
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enum sensing_type {
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AVG = 0,
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MAX,
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MIN,
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BALANCE,
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END_OF_TYPE,
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};
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static const char * const sensing_method[] = {
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[AVG] = "avg",
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[MAX] = "max",
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[MIN] = "min",
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[BALANCE] = "balance",
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};
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struct sensor_info {
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u16 sensor_num;
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u16 cal_type;
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u16 temp_error1;
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u16 temp_error2;
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};
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/**
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* struct exynos_tmu_data : A structure to hold the private data of the TMU
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driver
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* @id: identifier of the one instance of the TMU controller.
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* @pdata: pointer to the tmu platform/configuration data
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* @base: base address of the single instance of the TMU controller.
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* @base_second: base address of the common registers of the TMU controller.
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* @irq: irq number of the TMU controller.
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* @soc: id of the SOC type.
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* @irq_work: pointer to the irq work structure.
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* @lock: lock to implement synchronization.
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* @temp_error1: fused value of the first point trim.
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* @temp_error2: fused value of the second point trim.
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* @num_probe: number of probe for TMU_CONTROL1 SFR setting.
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* @regulator: pointer to the TMU regulator structure.
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* @reg_conf: pointer to structure to register with core thermal.
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* @ntrip: number of supported trip points.
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* @tmu_initialize: SoC specific TMU initialization method
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* @tmu_control: SoC specific TMU control method
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* @tmu_read: SoC specific TMU temperature read method
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* @tmu_set_emulation: SoC specific TMU emulation setting method
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* @tmu_clear_irqs: SoC specific TMU interrupts clearing method
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*/
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struct exynos_tmu_data {
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int id;
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/* Throttle hotplug related variables */
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bool hotplug_enable;
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int hotplug_in_threshold;
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int hotplug_out_threshold;
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int limited_frequency;
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int limited_threshold;
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int limited_threshold_release;
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struct exynos_tmu_platform_data *pdata;
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void __iomem *base;
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int irq;
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enum soc_type soc;
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struct work_struct irq_work;
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struct mutex lock;
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u16 temp_error1, temp_error2;
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struct thermal_zone_device *tzd;
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unsigned int ntrip;
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bool enabled;
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struct thermal_cooling_device *cool_dev;
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struct list_head node;
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u32 sensors;
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int num_probe;
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int num_of_sensors;
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struct sensor_info *sensor_info;
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int sensing_mode;
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char tmu_name[THERMAL_NAME_LENGTH + 1];
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struct device_node *np;
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int balance_offset;
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struct mutex hotplug_lock;
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int (*tmu_initialize)(struct platform_device *pdev);
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void (*tmu_control)(struct platform_device *pdev, bool on);
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int (*tmu_read)(struct exynos_tmu_data *data);
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void (*tmu_set_emulation)(struct exynos_tmu_data *data, int temp);
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void (*tmu_clear_irqs)(struct exynos_tmu_data *data);
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};
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#endif /* _EXYNOS_TMU_H */
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