/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* 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
*/
#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 void st_thermal_unregister(struct platform_device *pdev);
extern const struct dev_pm_ops st_thermal_pm_ops;
#endif /* __STI_RESET_SYSCFG_H */
Messung V0.5 in Prozent C=96 H=94 G=94
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
*© Formatika GbR, Deutschland