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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * ST Thermal Sensor Driver for STi series of SoCs4 * Author: Ajit Pal Singh <ajitpal.singh@st.com>5 *6 * Copyright (C) 2003-2014 STMicroelectronics (R&D) Limited7 */8 9#ifndef __STI_THERMAL_SYSCFG_H10#define __STI_THERMAL_SYSCFG_H11 12#include <linux/interrupt.h>13#include <linux/platform_device.h>14#include <linux/regmap.h>15#include <linux/thermal.h>16 17enum st_thermal_regfield_ids {18 INT_THRESH_HI = 0, /* Top two regfield IDs are mutually exclusive */19 TEMP_PWR = 0,20 DCORRECT,21 OVERFLOW,22 DATA,23 INT_ENABLE,24 25 MAX_REGFIELDS26};27 28/* Thermal sensor power states */29enum st_thermal_power_state {30 POWER_OFF = 0,31 POWER_ON32};33 34struct st_thermal_sensor;35 36/**37 * Description of private thermal sensor ops.38 *39 * @power_ctrl: Function for powering on/off a sensor. Clock to the40 * sensor is also controlled from this function.41 * @alloc_regfields: Allocate regmap register fields, specific to a sensor.42 * @do_memmap_regmap: Memory map the thermal register space and init regmap43 * instance or find regmap instance.44 * @register_irq: Register an interrupt handler for a sensor.45 */46struct st_thermal_sensor_ops {47 int (*power_ctrl)(struct st_thermal_sensor *, enum st_thermal_power_state);48 int (*alloc_regfields)(struct st_thermal_sensor *);49 int (*regmap_init)(struct st_thermal_sensor *);50 int (*register_enable_irq)(struct st_thermal_sensor *);51 int (*enable_irq)(struct st_thermal_sensor *);52};53 54/**55 * Description of thermal driver compatible data.56 *57 * @reg_fields: Pointer to the regfields array for a sensor.58 * @sys_compat: Pointer to the syscon node compatible string.59 * @ops: Pointer to private thermal ops for a sensor.60 * @calibration_val: Default calibration value to be written to the DCORRECT61 * register field for a sensor.62 * @temp_adjust_val: Value to be added/subtracted from the data read from63 * the sensor. If value needs to be added please provide a64 * positive value and if it is to be subtracted please65 * provide a negative value.66 * @crit_temp: The temperature beyond which the SoC should be shutdown67 * to prevent damage.68 */69struct st_thermal_compat_data {70 char *sys_compat;71 const struct reg_field *reg_fields;72 const struct st_thermal_sensor_ops *ops;73 unsigned int calibration_val;74 int temp_adjust_val;75 int crit_temp;76};77 78struct st_thermal_sensor {79 struct device *dev;80 struct thermal_zone_device *thermal_dev;81 const struct st_thermal_sensor_ops *ops;82 const struct st_thermal_compat_data *cdata;83 struct clk *clk;84 struct regmap *regmap;85 struct regmap_field *pwr;86 struct regmap_field *dcorrect;87 struct regmap_field *overflow;88 struct regmap_field *temp_data;89 struct regmap_field *int_thresh_hi;90 struct regmap_field *int_enable;91 int irq;92 void __iomem *mmio_base;93};94 95extern int st_thermal_register(struct platform_device *pdev,96 const struct of_device_id *st_thermal_of_match);97extern void st_thermal_unregister(struct platform_device *pdev);98extern const struct dev_pm_ops st_thermal_pm_ops;99 100#endif /* __STI_RESET_SYSCFG_H */101