2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
101 lines
3 KiB
C
101 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* ST Thermal Sensor Driver for STi series of SoCs
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* Author: Ajit Pal Singh <ajitpal.singh@st.com>
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*
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* Copyright (C) 2003-2014 STMicroelectronics (R&D) Limited
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*/
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#ifndef __STI_THERMAL_SYSCFG_H
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#define __STI_THERMAL_SYSCFG_H
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/thermal.h>
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enum st_thermal_regfield_ids {
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INT_THRESH_HI = 0, /* Top two regfield IDs are mutually exclusive */
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TEMP_PWR = 0,
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DCORRECT,
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OVERFLOW,
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DATA,
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INT_ENABLE,
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MAX_REGFIELDS
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};
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/* Thermal sensor power states */
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enum st_thermal_power_state {
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POWER_OFF = 0,
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POWER_ON
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};
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struct st_thermal_sensor;
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/**
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* Description of private thermal sensor ops.
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*
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* @power_ctrl: Function for powering on/off a sensor. Clock to the
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* sensor is also controlled from this function.
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* @alloc_regfields: Allocate regmap register fields, specific to a sensor.
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* @do_memmap_regmap: Memory map the thermal register space and init regmap
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* instance or find regmap instance.
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* @register_irq: Register an interrupt handler for a sensor.
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*/
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struct st_thermal_sensor_ops {
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int (*power_ctrl)(struct st_thermal_sensor *, enum st_thermal_power_state);
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int (*alloc_regfields)(struct st_thermal_sensor *);
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int (*regmap_init)(struct st_thermal_sensor *);
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int (*register_enable_irq)(struct st_thermal_sensor *);
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int (*enable_irq)(struct st_thermal_sensor *);
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};
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/**
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* Description of thermal driver compatible data.
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*
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* @reg_fields: Pointer to the regfields array for a sensor.
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* @sys_compat: Pointer to the syscon node compatible string.
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* @ops: Pointer to private thermal ops for a sensor.
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* @calibration_val: Default calibration value to be written to the DCORRECT
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* register field for a sensor.
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* @temp_adjust_val: Value to be added/subtracted from the data read from
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* the sensor. If value needs to be added please provide a
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* positive value and if it is to be subtracted please
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* provide a negative value.
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* @crit_temp: The temperature beyond which the SoC should be shutdown
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* to prevent damage.
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*/
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struct st_thermal_compat_data {
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char *sys_compat;
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const struct reg_field *reg_fields;
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const struct st_thermal_sensor_ops *ops;
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unsigned int calibration_val;
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int temp_adjust_val;
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int crit_temp;
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};
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struct st_thermal_sensor {
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struct device *dev;
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struct thermal_zone_device *thermal_dev;
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const struct st_thermal_sensor_ops *ops;
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const struct st_thermal_compat_data *cdata;
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struct clk *clk;
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struct regmap *regmap;
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struct regmap_field *pwr;
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struct regmap_field *dcorrect;
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struct regmap_field *overflow;
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struct regmap_field *temp_data;
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struct regmap_field *int_thresh_hi;
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struct regmap_field *int_enable;
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int irq;
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void __iomem *mmio_base;
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};
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extern int st_thermal_register(struct platform_device *pdev,
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const struct of_device_id *st_thermal_of_match);
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extern int st_thermal_unregister(struct platform_device *pdev);
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extern const struct dev_pm_ops st_thermal_pm_ops;
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#endif /* __STI_RESET_SYSCFG_H */
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