/*
 * Copyright (c) 2022 Intel Corporation
 * SPDX-License-Identifier: Apache-2.0
 */

#include <stdint.h>
#include <zephyr/toolchain.h>
#include <zephyr/sys/util_macro.h>
#include <adsp_shim.h>

#ifndef ZEPHYR_SOC_INTEL_ADSP_POWER_H_
#define ZEPHYR_SOC_INTEL_ADSP_POWER_H_

/* Value used as delay when waiting for hw register state change. */
#define HW_STATE_CHECK_DELAY 64

/* Power Control register - controls the power domain operations. */
struct ace_pwrctl {
	uint16_t wpdsphpxpg : 3;
	uint16_t rsvd3      : 1;
	uint16_t wphstpg    : 1;
	uint16_t rsvd5      : 1;
	uint16_t wphubhppg  : 1;
	uint16_t wpdspulppg : 1;
	uint16_t wpioxpg    : 2;
	uint16_t rsvd11     : 2;
	uint16_t wpmlpg     : 1;
	uint16_t rsvd14     : 2;
	uint16_t phubulppg  : 1;
};

#define ACE_PWRCTL ((volatile struct ace_pwrctl *) &ACE_DfPMCCU.dfpwrctl)

/* Power Status register - reports the power domain status. */
struct ace_pwrsts {
	uint16_t dsphpxpgs : 4;
	uint16_t hstpgs    : 1;
	uint16_t rsvd5     : 1;
	uint16_t hubhppgs  : 1;
	uint16_t dspulppgs : 1;
	uint16_t ioxpgs    : 4;
	uint16_t mlpgs     : 2;
	uint16_t rsvd14    : 1;
	uint16_t hubulppgs : 1;
};

#define ACE_PWRSTS ((volatile struct ace_pwrsts *) &ACE_DfPMCCU.dfpwrsts)

/**
 * @brief Power up a specific CPU.
 *
 * This sets the "not power gating" bit in the power control
 * register to disable power gating to CPU, thus powering up
 * the CPU.
 *
 * @param cpu_num CPU to be powered up.
 */
static ALWAYS_INLINE void soc_cpu_power_up(int cpu_num)
{
	ACE_PWRCTL->wpdsphpxpg |= BIT(cpu_num);
}

/**
 * @brief Power down a specific CPU.
 *
 * This clears the "not power gating" bit in the power control
 * register to enable power gating to CPU, thus powering down
 * the CPU.
 *
 * @param cpu_num CPU to be powered down.
 */
static ALWAYS_INLINE void soc_cpu_power_down(int cpu_num)
{
	ACE_PWRCTL->wpdsphpxpg &= ~BIT(cpu_num);
}

/**
 * @brief Test if a CPU is currently powered.
 *
 * This queries the power status register to see if the CPU
 * is currently powered.
 *
 * @param cpu_num CPU to be queried.
 * @return True if CPU is powered, false if now.
 */
static ALWAYS_INLINE bool soc_cpu_is_powered(int cpu_num)
{
	return (ACE_PWRSTS->dsphpxpgs & BIT(cpu_num)) == BIT(cpu_num);
}

/**
 * @brief Retrieve node identifier for Intel ADSP HOST power domain.
 */
#define INTEL_ADSP_HST_DOMAIN_DTNODE DT_NODELABEL(hst_domain)

/**
 * @brief Intel ADSP HOST power domain pointer.
 */
#define INTEL_ADSP_HST_DOMAIN_DEV DEVICE_DT_GET(INTEL_ADSP_HST_DOMAIN_DTNODE)

#define INTEL_ADSP_HST_DOMAIN_BIT DT_PROP(INTEL_ADSP_HST_DOMAIN_DTNODE, bit_position)

#define INTEL_ADSP_ACE15_MAGIC_KEY 0xFFFACE15

#endif /* ZEPHYR_SOC_INTEL_ADSP_POWER_H_ */