[linux-block.git] / include / linux / dtpm.h

/* 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 *);
};

struct device_node;

struct dtpm_subsys_ops {
	const char *name;
	int (*init)(void);
	void (*exit)(void);
	int (*setup)(struct dtpm *, struct device_node *);
};

enum DTPM_NODE_TYPE {
	DTPM_NODE_VIRTUAL = 0,
	DTPM_NODE_DT,
};

struct dtpm_node {
	enum DTPM_NODE_TYPE type;
	const char *name;
	struct dtpm_node *parent;
};

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);

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_create_hierarchy(struct of_device_id *dtpm_match_table);

void dtpm_destroy_hierarchy(void);
#endif
Commit	Line	Data
a20d0ef9 DL	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
	15	struct 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;
a20d0ef9 DL	26	};
	27
	28	struct dtpm_ops {
	29	u64 (set_power_uw)(struct dtpm , u64);
	30	u64 (get_power_uw)(struct dtpm );
4570ddda	31	int (update_power_uw)(struct dtpm );
a20d0ef9 DL	32	void (release)(struct dtpm );
	33	};
	34
3759ec67 DL	35	struct device_node;
3759ec67 DL	36
b9794a82 DL	37	struct dtpm_subsys_ops {
	38	const char *name;
	39	int (*init)(void);
c404c64d	40	void (*exit)(void);
3759ec67 DL	41	int (setup)(struct dtpm , struct device_node *);
	42	};
	43
	44	enum DTPM_NODE_TYPE {
	45	DTPM_NODE_VIRTUAL = 0,
	46	DTPM_NODE_DT,
	47	};
	48
	49	struct dtpm_node {
	50	enum DTPM_NODE_TYPE type;
	51	const char *name;
	52	struct dtpm_node *parent;
a20d0ef9 DL	53	};
a20d0ef9 DL	54
a20d0ef9 DL	55	static inline struct dtpm to_dtpm(struct powercap_zone zone)
	56	{
	57	return container_of(zone, struct dtpm, zone);
	58	}
	59
4570ddda	60	int dtpm_update_power(struct dtpm *dtpm);
a20d0ef9 DL	61
	62	int dtpm_release_zone(struct powercap_zone *pcz);
	63
d2cdc6ad	64	void dtpm_init(struct dtpm dtpm, struct dtpm_ops ops);
a20d0ef9 DL	65
	66	void dtpm_unregister(struct dtpm *dtpm);
	67
	68	int dtpm_register(const char name, struct dtpm dtpm, struct dtpm *parent);
	69
3759ec67	70	int dtpm_create_hierarchy(struct of_device_id *dtpm_match_table);
c404c64d DL	71
c404c64d DL	72	void dtpm_destroy_hierarchy(void);
a20d0ef9	73	#endif