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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 void *private;
27};
28
29struct dtpm_ops {
30 u64 (*set_power_uw)(struct dtpm *, u64);
31 u64 (*get_power_uw)(struct dtpm *);
32 void (*release)(struct dtpm *);
33};
34
35struct dtpm_descr;
36
37typedef int (*dtpm_init_t)(struct dtpm_descr *);
38
39struct dtpm_descr {
40 struct dtpm *parent;
41 const char *name;
42 dtpm_init_t init;
43};
44
45/* Init section thermal table */
46extern struct dtpm_descr *__dtpm_table[];
47extern struct dtpm_descr *__dtpm_table_end[];
48
49#define DTPM_TABLE_ENTRY(name) \
50 static typeof(name) *__dtpm_table_entry_##name \
51 __used __section("__dtpm_table") = &name
52
53#define DTPM_DECLARE(name) DTPM_TABLE_ENTRY(name)
54
55#define for_each_dtpm_table(__dtpm) \
56 for (__dtpm = __dtpm_table; \
57 __dtpm < __dtpm_table_end; \
58 __dtpm++)
59
60static inline struct dtpm *to_dtpm(struct powercap_zone *zone)
61{
62 return container_of(zone, struct dtpm, zone);
63}
64
65int dtpm_update_power(struct dtpm *dtpm, u64 power_min, u64 power_max);
66
67int dtpm_release_zone(struct powercap_zone *pcz);
68
69struct dtpm *dtpm_alloc(struct dtpm_ops *ops);
70
71void dtpm_unregister(struct dtpm *dtpm);
72
73int dtpm_register(const char *name, struct dtpm *dtpm, struct dtpm *parent);
74
75int dtpm_register_cpu(struct dtpm *parent);
76
77#endif