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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*/
#ifndef __QCOM_TSENS_H__
#define __QCOM_TSENS_H__
#define ONE_PT_CALIB 0x1
#define ONE_PT_CALIB2 0x2
#define TWO_PT_CALIB 0x3
#include <linux/thermal.h>
struct tsens_priv;
/**
* struct tsens_sensor - data for each sensor connected to the tsens device
* @priv: tsens device instance that this sensor is connected to
* @tzd: pointer to the thermal zone that this sensor is in
* @offset: offset of temperature adjustment curve
* @id: Sensor ID
* @hw_id: HW ID can be used in case of platform-specific IDs
* @slope: slope of temperature adjustment curve
* @status: 8960-specific variable to track 8960 and 8660 status register offset
*/
struct tsens_sensor {
struct tsens_priv *priv;
struct thermal_zone_device *tzd;
int offset;
int id;
int hw_id;
int slope;
u32 status;
};
/**
* struct tsens_ops - operations as supported by the tsens device
* @init: Function to initialize the tsens device
* @calibrate: Function to calibrate the tsens device
* @get_temp: Function which returns the temp in millidegC
* @enable: Function to enable (clocks/power) tsens device
* @disable: Function to disable the tsens device
* @suspend: Function to suspend the tsens device
* @resume: Function to resume the tsens device
* @get_trend: Function to get the thermal/temp trend
*/
struct tsens_ops {
/* mandatory callbacks */
int (*init)(struct tsens_priv *);
int (*calibrate)(struct tsens_priv *);
int (*get_temp)(struct tsens_priv *, int, int *);
/* optional callbacks */
int (*enable)(struct tsens_priv *, int);
void (*disable)(struct tsens_priv *);
int (*suspend)(struct tsens_priv *);
int (*resume)(struct tsens_priv *);
int (*get_trend)(struct tsens_priv *, int, enum thermal_trend *);
};
enum reg_list {
SROT_CTRL_OFFSET,
REG_ARRAY_SIZE,
};
/**
* struct tsens_plat_data - tsens compile-time platform data
* @num_sensors: Number of sensors supported by platform
* @ops: operations the tsens instance supports
* @hw_ids: Subset of sensors ids supported by platform, if not the first n
* @reg_offsets: Register offsets for commonly used registers
*/
struct tsens_plat_data {
const u32 num_sensors;
const struct tsens_ops *ops;
const u16 reg_offsets[REG_ARRAY_SIZE];
unsigned int *hw_ids;
};
/**
* struct tsens_context - Registers to be saved/restored across a context loss
*/
struct tsens_context {
int threshold;
int control;
};
/**
* struct tsens_priv - private data for each instance of the tsens IP
* @dev: pointer to struct device
* @num_sensors: number of sensors enabled on this device
* @tm_map: pointer to TM register address space
* @srot_map: pointer to SROT register address space
* @tm_offset: deal with old device trees that don't address TM and SROT
* address space separately
* @reg_offsets: array of offsets to important regs for this version of IP
* @ctx: registers to be saved and restored during suspend/resume
* @ops: pointer to list of callbacks supported by this device
* @sensor: list of sensors attached to this device
*/
struct tsens_priv {
struct device *dev;
u32 num_sensors;
struct regmap *tm_map;
struct regmap *srot_map;
u32 tm_offset;
u16 reg_offsets[REG_ARRAY_SIZE];
struct tsens_context ctx;
const struct tsens_ops *ops;
struct tsens_sensor sensor[0];
};
char *qfprom_read(struct device *, const char *);
void compute_intercept_slope(struct tsens_priv *, u32 *, u32 *, u32);
int init_common(struct tsens_priv *);
int get_temp_common(struct tsens_priv *, int, int *);
/* TSENS v1 targets */
extern const struct tsens_plat_data data_8916, data_8974, data_8960;
/* TSENS v2 targets */
extern const struct tsens_plat_data data_8996, data_tsens_v2;
#endif /* __QCOM_TSENS_H__ */
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