/* * Copyright (c) 2015, The Linux Foundation. All rights reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #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_device; struct tsens_sensor { struct tsens_device *tmdev; 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_device *); int (*calibrate)(struct tsens_device *); int (*get_temp)(struct tsens_device *, int, int *); /* optional callbacks */ int (*enable)(struct tsens_device *, int); void (*disable)(struct tsens_device *); int (*suspend)(struct tsens_device *); int (*resume)(struct tsens_device *); int (*get_trend)(struct tsens_device *, int, enum thermal_trend *); }; /** * struct tsens_data - tsens instance specific data * @num_sensors: Max 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 */ struct tsens_data { const u32 num_sensors; const struct tsens_ops *ops; unsigned int *hw_ids; }; /* Registers to be saved/restored across a context loss */ struct tsens_context { int threshold; int control; }; struct tsens_device { struct device *dev; u32 num_sensors; struct regmap *map; u32 tm_offset; 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_device *, u32 *, u32 *, u32); int init_common(struct tsens_device *); int get_temp_common(struct tsens_device *, int, int *); /* TSENS v1 targets */ extern const struct tsens_data data_8916, data_8974, data_8960; /* TSENS v2 targets */ extern const struct tsens_data data_8996, data_tsens_v2; #endif /* __QCOM_TSENS_H__ */