include/linux/amlogic/ddr_cooling.h

/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
/*
 * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
 */

#ifndef __DDR_COOLING_H__
#define __DDR_COOLING_H__

#include <linux/thermal.h>
#include <linux/amlogic/meson_cooldev.h>

struct ddr_cooling_device {
	int id;
	struct thermal_cooling_device *cool_dev;
	u32 ddr_reg;
	u32 ddr_status;
	u32 ddr_bits[2];
	u32 ddr_data[16];
	u32 ddr_bits_keep;	/*for keep ddr reg val excepts change bits*/
	struct list_head node;
};

#ifdef CONFIG_AMLOGIC_DDR_THERMAL

struct thermal_cooling_device *ddr_cooling_register(struct device_node *np,
						    struct cool_dev *cool);

/**
 * ddr_cooling_unregister - function to remove ddr cooling device.
 * @cdev: thermal cooling device pointer.
 */
void ddr_cooling_unregister(struct thermal_cooling_device *cdev);

#else

static inline struct thermal_cooling_device *
ddr_cooling_register(struct device_node *np,
		     struct cool_dev *cool)
{
	return NULL;
}

static inline
void ddr_cooling_unregister(struct thermal_cooling_device *cdev)
{
}
#endif

#endif /* __DDR_COOLING_H__ */