95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
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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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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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/**
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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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*/
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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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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 *map;
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struct regmap_field *status_field;
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struct tsens_context ctx;
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bool trdy;
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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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extern const struct tsens_data data_8916, data_8974, data_8960, data_8996;
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#endif /* __QCOM_TSENS_H__ */
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