tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 */
5
6#ifndef __QCOM_TSENS_H__
7#define __QCOM_TSENS_H__
8
9#define ONE_PT_CALIB 0x1
10#define ONE_PT_CALIB2 0x2
11#define TWO_PT_CALIB 0x3
12
13#include <linux/thermal.h>
14
15struct tsens_device;
16
17struct tsens_sensor {
18 struct tsens_device *tmdev;
19 struct thermal_zone_device *tzd;
20 int offset;
21 int id;
22 int hw_id;
23 int slope;
24 u32 status;
25};
26
27/**
28 * struct tsens_ops - operations as supported by the tsens device
29 * @init: Function to initialize the tsens device
30 * @calibrate: Function to calibrate the tsens device
31 * @get_temp: Function which returns the temp in millidegC
32 * @enable: Function to enable (clocks/power) tsens device
33 * @disable: Function to disable the tsens device
34 * @suspend: Function to suspend the tsens device
35 * @resume: Function to resume the tsens device
36 * @get_trend: Function to get the thermal/temp trend
37 */
38struct tsens_ops {
39 /* mandatory callbacks */
40 int (*init)(struct tsens_device *);
41 int (*calibrate)(struct tsens_device *);
42 int (*get_temp)(struct tsens_device *, int, int *);
43 /* optional callbacks */
44 int (*enable)(struct tsens_device *, int);
45 void (*disable)(struct tsens_device *);
46 int (*suspend)(struct tsens_device *);
47 int (*resume)(struct tsens_device *);
48 int (*get_trend)(struct tsens_device *, int, enum thermal_trend *);
49};
50
51enum reg_list {
52 SROT_CTRL_OFFSET,
53
54 REG_ARRAY_SIZE,
55};
56
57/**
58 * struct tsens_data - tsens instance specific data
59 * @num_sensors: Max number of sensors supported by platform
60 * @ops: operations the tsens instance supports
61 * @hw_ids: Subset of sensors ids supported by platform, if not the first n
62 * @reg_offsets: Register offsets for commonly used registers
63 */
64struct tsens_data {
65 const u32 num_sensors;
66 const struct tsens_ops *ops;
67 const u16 reg_offsets[REG_ARRAY_SIZE];
68 unsigned int *hw_ids;
69};
70
71/* Registers to be saved/restored across a context loss */
72struct tsens_context {
73 int threshold;
74 int control;
75};
76
77struct tsens_device {
78 struct device *dev;
79 u32 num_sensors;
80 struct regmap *tm_map;
81 struct regmap *srot_map;
82 u32 tm_offset;
83 u16 reg_offsets[REG_ARRAY_SIZE];
84 struct tsens_context ctx;
85 const struct tsens_ops *ops;
86 struct tsens_sensor sensor[0];
87};
88
89char *qfprom_read(struct device *, const char *);
90void compute_intercept_slope(struct tsens_device *, u32 *, u32 *, u32);
91int init_common(struct tsens_device *);
92int get_temp_common(struct tsens_device *, int, int *);
93
94/* TSENS v1 targets */
95extern const struct tsens_data data_8916, data_8974, data_8960;
96/* TSENS v2 targets */
97extern const struct tsens_data data_8996, data_tsens_v2;
98
99#endif /* __QCOM_TSENS_H__ */