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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2020 Linaro Ltd
4 *
5 * Author: Daniel Lezcano <daniel.lezcano@linaro.org>
6 */
7#ifndef ___DTPM_H__
8#define ___DTPM_H__
9
10#include <linux/powercap.h>
11
12#define MAX_DTPM_DESCR 8
13#define MAX_DTPM_CONSTRAINTS 1
14
15struct dtpm {
16 struct powercap_zone zone;
17 struct dtpm *parent;
18 struct list_head sibling;
19 struct list_head children;
20 struct dtpm_ops *ops;
21 unsigned long flags;
22 u64 power_limit;
23 u64 power_max;
24 u64 power_min;
25 int weight;
26};
27
28struct dtpm_ops {
29 u64 (*set_power_uw)(struct dtpm *, u64);
30 u64 (*get_power_uw)(struct dtpm *);
31 int (*update_power_uw)(struct dtpm *);
32 void (*release)(struct dtpm *);
33};
34
35typedef int (*dtpm_init_t)(void);
36
37struct dtpm_descr {
38 dtpm_init_t init;
39};
40
41/* Init section thermal table */
42extern struct dtpm_descr __dtpm_table[];
43extern struct dtpm_descr __dtpm_table_end[];
44
45#define DTPM_TABLE_ENTRY(name, __init) \
46 static struct dtpm_descr __dtpm_table_entry_##name \
47 __used __section("__dtpm_table") = { \
48 .init = __init, \
49 }
50
51#define DTPM_DECLARE(name, init) DTPM_TABLE_ENTRY(name, init)
52
53#define for_each_dtpm_table(__dtpm) \
54 for (__dtpm = __dtpm_table; \
55 __dtpm < __dtpm_table_end; \
56 __dtpm++)
57
58static inline struct dtpm *to_dtpm(struct powercap_zone *zone)
59{
60 return container_of(zone, struct dtpm, zone);
61}
62
63int dtpm_update_power(struct dtpm *dtpm);
64
65int dtpm_release_zone(struct powercap_zone *pcz);
66
67void dtpm_init(struct dtpm *dtpm, struct dtpm_ops *ops);
68
69void dtpm_unregister(struct dtpm *dtpm);
70
71int dtpm_register(const char *name, struct dtpm *dtpm, struct dtpm *parent);
72
73#endif