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
35struct device_node;
36
37struct dtpm_subsys_ops {
38	const char *name;
39	int (*init)(void);
40	void (*exit)(void);
41	int (*setup)(struct dtpm *, struct device_node *);
42};
43
44enum DTPM_NODE_TYPE {
45	DTPM_NODE_VIRTUAL = 0,
46	DTPM_NODE_DT,
47};
48
49struct dtpm_node {
50	enum DTPM_NODE_TYPE type;
51	const char *name;
52	struct dtpm_node *parent;
53};
54
55static inline struct dtpm *to_dtpm(struct powercap_zone *zone)
56{
57	return container_of(zone, struct dtpm, zone);
58}
59
60int dtpm_update_power(struct dtpm *dtpm);
61
62int dtpm_release_zone(struct powercap_zone *pcz);
63
64void dtpm_init(struct dtpm *dtpm, struct dtpm_ops *ops);
65
66void dtpm_unregister(struct dtpm *dtpm);
67
68int dtpm_register(const char *name, struct dtpm *dtpm, struct dtpm *parent);
69
70int dtpm_create_hierarchy(struct of_device_id *dtpm_match_table);
71
72void dtpm_destroy_hierarchy(void);
73#endif
74