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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Wifi Band Exclusion Interface (AMD ACPI Implementation)
* Copyright (C) 2023 Advanced Micro Devices
*/
#ifndef _ACPI_AMD_WBRF_H
#define _ACPI_AMD_WBRF_H
#include <linux/device.h>
#include <linux/notifier.h>
/* The maximum number of frequency band ranges */
#define MAX_NUM_OF_WBRF_RANGES 11
/* Record actions */
#define WBRF_RECORD_ADD 0x0
#define WBRF_RECORD_REMOVE 0x1
/**
* struct freq_band_range - Wifi frequency band range definition
* @start: start frequency point (in Hz)
* @end: end frequency point (in Hz)
*/
struct freq_band_range {
u64 start;
u64 end;
};
/**
* struct wbrf_ranges_in_out - wbrf ranges info
* @num_of_ranges: total number of band ranges in this struct
* @band_list: array of Wifi band ranges
*/
struct wbrf_ranges_in_out {
u64 num_of_ranges;
struct freq_band_range band_list[MAX_NUM_OF_WBRF_RANGES];
};
/**
* enum wbrf_notifier_actions - wbrf notifier actions index
* @WBRF_CHANGED: there was some frequency band updates. The consumers
* should retrieve the latest active frequency bands.
*/
enum wbrf_notifier_actions {
WBRF_CHANGED,
};
#if IS_ENABLED(CONFIG_AMD_WBRF)
bool acpi_amd_wbrf_supported_producer(struct device *dev);
int acpi_amd_wbrf_add_remove(struct device *dev, uint8_t action, struct wbrf_ranges_in_out *in);
bool acpi_amd_wbrf_supported_consumer(struct device *dev);
int amd_wbrf_retrieve_freq_band(struct device *dev, struct wbrf_ranges_in_out *out);
int amd_wbrf_register_notifier(struct notifier_block *nb);
int amd_wbrf_unregister_notifier(struct notifier_block *nb);
#else
static inline
bool acpi_amd_wbrf_supported_consumer(struct device *dev)
{
return false;
}
static inline
int acpi_amd_wbrf_add_remove(struct device *dev, uint8_t action, struct wbrf_ranges_in_out *in)
{
return -ENODEV;
}
static inline
bool acpi_amd_wbrf_supported_producer(struct device *dev)
{
return false;
}
static inline
int amd_wbrf_retrieve_freq_band(struct device *dev, struct wbrf_ranges_in_out *out)
{
return -ENODEV;
}
static inline
int amd_wbrf_register_notifier(struct notifier_block *nb)
{
return -ENODEV;
}
static inline
int amd_wbrf_unregister_notifier(struct notifier_block *nb)
{
return -ENODEV;
}
#endif /* CONFIG_AMD_WBRF */
#endif /* _ACPI_AMD_WBRF_H */