X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fthermal%2Fst%2Fst_thermal.h;fp=kernel%2Fdrivers%2Fthermal%2Fst%2Fst_thermal.h;h=fecafbe10fa773db80674d7d96e11b704e00a70d;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/thermal/st/st_thermal.h b/kernel/drivers/thermal/st/st_thermal.h new file mode 100644 index 000000000..fecafbe10 --- /dev/null +++ b/kernel/drivers/thermal/st/st_thermal.h @@ -0,0 +1,104 @@ +/* + * ST Thermal Sensor Driver for STi series of SoCs + * Author: Ajit Pal Singh + * + * 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 +#include +#include +#include + +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 */