dtpm.h (1492B)
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