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Release 4.7 drivers/thermal/st/st_thermal.h

Directory: drivers/thermal/st
/*
 * ST Thermal Sensor Driver for STi series of SoCs
 * Author: Ajit Pal Singh <ajitpal.singh@st.com>
 *
 * Copyright (C) 2003-2014 STMicroelectronics (R&D) Limited
 *
 * 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.
 */

#ifndef __STI_THERMAL_SYSCFG_H

#define __STI_THERMAL_SYSCFG_H

#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/thermal.h>


enum st_thermal_regfield_ids {
	
INT_THRESH_HI = 0, /* Top two regfield IDs are mutually exclusive */
	
TEMP_PWR = 0,
	
DCORRECT,
	
OVERFLOW,
	
DATA,
	
INT_ENABLE,

	
MAX_REGFIELDS
};

/* Thermal sensor power states */

enum st_thermal_power_state {
	
POWER_OFF = 0,
	
POWER_ON
};

struct st_thermal_sensor;

/**
 * Description of private thermal sensor ops.
 *
 * @power_ctrl:         Function for powering on/off a sensor. Clock to the
 *                      sensor is also controlled from this function.
 * @alloc_regfields:    Allocate regmap register fields, specific to a sensor.
 * @do_memmap_regmap:   Memory map the thermal register space and init regmap
 *                      instance or find regmap instance.
 * @register_irq:       Register an interrupt handler for a sensor.
 */

struct st_thermal_sensor_ops {
	
int (*power_ctrl)(struct st_thermal_sensor *, enum st_thermal_power_state);
	
int (*alloc_regfields)(struct st_thermal_sensor *);
	
int (*regmap_init)(struct st_thermal_sensor *);
	
int (*register_enable_irq)(struct st_thermal_sensor *);
	
int (*enable_irq)(struct st_thermal_sensor *);
};

/**
 * Description of thermal driver compatible data.
 *
 * @reg_fields:         Pointer to the regfields array for a sensor.
 * @sys_compat:         Pointer to the syscon node compatible string.
 * @ops:                Pointer to private thermal ops for a sensor.
 * @calibration_val:    Default calibration value to be written to the DCORRECT
 *                      register field for a sensor.
 * @temp_adjust_val:    Value to be added/subtracted from the data read from
 *                      the sensor. If value needs to be added please provide a
 *                      positive value and if it is to be subtracted please
 *                      provide a negative value.
 * @crit_temp:          The temperature beyond which the SoC should be shutdown
 *                      to prevent damage.
 */

struct st_thermal_compat_data {
	
char *sys_compat;
	
const struct reg_field *reg_fields;
	
const struct st_thermal_sensor_ops *ops;
	
unsigned int calibration_val;
	
int temp_adjust_val;
	
int crit_temp;
};


struct st_thermal_sensor {
	
struct device *dev;
	
struct thermal_zone_device *thermal_dev;
	
const struct st_thermal_sensor_ops *ops;
	
const struct st_thermal_compat_data *cdata;
	
struct clk *clk;
	
struct regmap *regmap;
	
struct regmap_field *pwr;
	
struct regmap_field *dcorrect;
	
struct regmap_field *overflow;
	
struct regmap_field *temp_data;
	
struct regmap_field *int_thresh_hi;
	
struct regmap_field *int_enable;
	
int irq;
	
void __iomem *mmio_base;
};

extern int st_thermal_register(struct platform_device *pdev,
			       const struct of_device_id *st_thermal_of_match);
extern int st_thermal_unregister(struct platform_device *pdev);
extern const struct dev_pm_ops st_thermal_pm_ops;

#endif /* __STI_RESET_SYSCFG_H */

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Directory: drivers/thermal/st



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