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