78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2020 Linaro Ltd
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*
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* Author: Daniel Lezcano <daniel.lezcano@linaro.org>
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*/
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#ifndef ___DTPM_H__
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#define ___DTPM_H__
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#include <linux/powercap.h>
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#define MAX_DTPM_DESCR 8
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#define MAX_DTPM_CONSTRAINTS 1
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struct dtpm {
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struct powercap_zone zone;
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struct dtpm *parent;
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struct list_head sibling;
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struct list_head children;
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struct dtpm_ops *ops;
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unsigned long flags;
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u64 power_limit;
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u64 power_max;
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u64 power_min;
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int weight;
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void *private;
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};
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struct dtpm_ops {
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u64 (*set_power_uw)(struct dtpm *, u64);
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u64 (*get_power_uw)(struct dtpm *);
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void (*release)(struct dtpm *);
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};
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struct dtpm_descr;
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typedef int (*dtpm_init_t)(struct dtpm_descr *);
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struct dtpm_descr {
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struct dtpm *parent;
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const char *name;
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dtpm_init_t init;
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};
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/* Init section thermal table */
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extern struct dtpm_descr *__dtpm_table[];
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extern struct dtpm_descr *__dtpm_table_end[];
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#define DTPM_TABLE_ENTRY(name) \
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static typeof(name) *__dtpm_table_entry_##name \
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__used __section("__dtpm_table") = &name
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#define DTPM_DECLARE(name) DTPM_TABLE_ENTRY(name)
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#define for_each_dtpm_table(__dtpm) \
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for (__dtpm = __dtpm_table; \
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__dtpm < __dtpm_table_end; \
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__dtpm++)
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static inline struct dtpm *to_dtpm(struct powercap_zone *zone)
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{
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return container_of(zone, struct dtpm, zone);
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}
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int dtpm_update_power(struct dtpm *dtpm, u64 power_min, u64 power_max);
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int dtpm_release_zone(struct powercap_zone *pcz);
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struct dtpm *dtpm_alloc(struct dtpm_ops *ops);
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void dtpm_unregister(struct dtpm *dtpm);
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int dtpm_register(const char *name, struct dtpm *dtpm, struct dtpm *parent);
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int dtpm_register_cpu(struct dtpm *parent);
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#endif
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