pstate.h

Go to the documentation of this file.

/*
 * Copyright (c) 2025 Analog Devices, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_SUBSYS_CPU_FREQ_PSTATE_H_
#define ZEPHYR_SUBSYS_CPU_FREQ_PSTATE_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <zephyr/types.h>
#include <zephyr/devicetree.h>
#include <zephyr/cpu_freq/pstate.h>


#define PSTATE_DT_SYM(_node) _CONCAT(__pstate_, DT_DEP_ORD(_node))

#define PSTATE_DT_DEFINE(_node, _config)                                                           \
        const struct pstate PSTATE_DT_SYM(_node) = {                                               \
                .load_threshold = DT_PROP(_node, load_threshold),                                  \
                .config = _config,                                                                 \
        };

#define PSTATE_DT_GET(_node) &PSTATE_DT_SYM(_node)
 

struct pstate {
        uint8_t load_threshold; 
        const void *config;     
};
 
/* Define performance-states as extern to be picked up by CPU Freq policy */
#define Z_DECLARE_PSTATE_EXTERN(_node) \
        extern const struct pstate PSTATE_DT_SYM(_node);
 
DT_FOREACH_CHILD_STATUS_OKAY(DT_PATH(performance_states), Z_DECLARE_PSTATE_EXTERN)
 

 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_SUBSYS_CPU_FREQ_PSTATE_H_ */