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* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
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* the the People's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
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*/
#include <sunxi_hal_common.h>
#include <hal_cpufreq.h>
#include <errno.h>

struct cpufreq_data *cpufreq;

int hal_cpufreq_data_register(struct cpufreq_data *data)
{
	int ret;

	if (!data || !data->ops ||
		!data->ops->set_freq || !data->ops->get_freq)
		return -EINVAL;

	cpufreq = data;

	return 0;
}

int hal_cpufreq_data_unregister(struct cpufreq_data *data)
{
	int ret;

	if (!cpufreq || (cpufreq != data))
		return -EINVAL;

	cpufreq = NULL;

	return 0;
}

int hal_cpufreq_set_freq(u32 clk_rate)
{
	if (!cpufreq)
		return -ENODEV;

	return cpufreq->ops->set_freq(clk_rate);
}

int hal_cpufreq_get_freq(void)
{
	if (!cpufreq)
		return -ENODEV;

	return cpufreq->ops->get_freq();
}

/*
 * cpufreq_get_freq_table_size - function to get frequency table size.
 *
 * Return: frequency table size if success, error code or 0 otherwise.
 */
int hal_cpufreq_get_freq_table_size(void)
{
	if (!cpufreq)
		return -ENODEV;

	if (cpufreq->ops->get_freq_table_size)
		return cpufreq->ops->get_freq_table_size();

	return 0;
}

/*
 * cpufreq_get_freq_table_freq - function to get frequency in frequency table.
 *
 * Return: frequency if success, error code or 0 otherwise.
 */
int hal_cpufreq_get_freq_table_freq(int index)
{
	if (!cpufreq)
		return -ENODEV;

	if (cpufreq->ops->get_freq_table_freq)
		return cpufreq->ops->get_freq_table_freq(index);

	return 0;
}