/*
 * Copyright 2020 Carlo Caione <ccaione@baylibre.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef ZEPHYR_INCLUDE_DRIVERS_PM_CPU_OPS_PSCI_H_
#define ZEPHYR_INCLUDE_DRIVERS_PM_CPU_OPS_PSCI_H_

#include <zephyr/types.h>
#include <zephyr/arch/arm64/arm-smccc.h>
#include <stddef.h>
#include <zephyr/device.h>

#ifdef __cplusplus
extern "C" {
#endif

/* PSCI version decoding (independent of PSCI version) */
#define PSCI_VERSION_MAJOR_SHIFT		16
#define PSCI_VERSION_MINOR_MASK			\
		((1U << PSCI_VERSION_MAJOR_SHIFT) - 1)
#define PSCI_VERSION_MAJOR_MASK			~PSCI_VERSION_MINOR_MASK

#define PSCI_VERSION_MAJOR(ver)			\
		(((ver) & PSCI_VERSION_MAJOR_MASK) >> PSCI_VERSION_MAJOR_SHIFT)
#define PSCI_VERSION_MINOR(ver)			\
		((ver) & PSCI_VERSION_MINOR_MASK)

uint32_t psci_version(void);

#ifdef __cplusplus
}
#endif

#endif /* ZEPHYR_INCLUDE_DRIVERS_PM_CPU_OPS_PSCI_H_ */