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c130a7602e
Registers have moved around across TSENS generations. For example, the CTRL register was at offset 0x0 in the SROT region on msm8916 but is at offset 0x4 in newer v2 based TSENS HW blocks. Allow passing offsets of important registers so that we can continue to use common functions. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*/
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#ifndef __QCOM_TSENS_H__
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#define __QCOM_TSENS_H__
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#define ONE_PT_CALIB 0x1
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#define ONE_PT_CALIB2 0x2
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#define TWO_PT_CALIB 0x3
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#include <linux/thermal.h>
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struct tsens_device;
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struct tsens_sensor {
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struct tsens_device *tmdev;
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struct thermal_zone_device *tzd;
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int offset;
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int id;
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int hw_id;
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int slope;
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u32 status;
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};
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/**
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* struct tsens_ops - operations as supported by the tsens device
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* @init: Function to initialize the tsens device
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* @calibrate: Function to calibrate the tsens device
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* @get_temp: Function which returns the temp in millidegC
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* @enable: Function to enable (clocks/power) tsens device
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* @disable: Function to disable the tsens device
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* @suspend: Function to suspend the tsens device
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* @resume: Function to resume the tsens device
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* @get_trend: Function to get the thermal/temp trend
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*/
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struct tsens_ops {
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/* mandatory callbacks */
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int (*init)(struct tsens_device *);
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int (*calibrate)(struct tsens_device *);
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int (*get_temp)(struct tsens_device *, int, int *);
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/* optional callbacks */
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int (*enable)(struct tsens_device *, int);
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void (*disable)(struct tsens_device *);
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int (*suspend)(struct tsens_device *);
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int (*resume)(struct tsens_device *);
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int (*get_trend)(struct tsens_device *, int, enum thermal_trend *);
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};
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enum reg_list {
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SROT_CTRL_OFFSET,
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REG_ARRAY_SIZE,
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};
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/**
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* struct tsens_data - tsens instance specific data
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* @num_sensors: Max number of sensors supported by platform
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* @ops: operations the tsens instance supports
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* @hw_ids: Subset of sensors ids supported by platform, if not the first n
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* @reg_offsets: Register offsets for commonly used registers
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*/
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struct tsens_data {
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const u32 num_sensors;
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const struct tsens_ops *ops;
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const u16 reg_offsets[REG_ARRAY_SIZE];
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unsigned int *hw_ids;
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};
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/* Registers to be saved/restored across a context loss */
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struct tsens_context {
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int threshold;
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int control;
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};
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struct tsens_device {
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struct device *dev;
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u32 num_sensors;
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struct regmap *tm_map;
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struct regmap *srot_map;
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u32 tm_offset;
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u16 reg_offsets[REG_ARRAY_SIZE];
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struct tsens_context ctx;
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const struct tsens_ops *ops;
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struct tsens_sensor sensor[0];
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};
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char *qfprom_read(struct device *, const char *);
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void compute_intercept_slope(struct tsens_device *, u32 *, u32 *, u32);
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int init_common(struct tsens_device *);
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int get_temp_common(struct tsens_device *, int, int *);
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/* TSENS v1 targets */
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extern const struct tsens_data data_8916, data_8974, data_8960;
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/* TSENS v2 targets */
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extern const struct tsens_data data_8996, data_tsens_v2;
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#endif /* __QCOM_TSENS_H__ */
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