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/*
* ARM GEM5 Multi-cluster platform's CPUFreq header file
*
* Copyright (C) 2013 - 2014 ARM Ltd.
*
* Authors: Akash Bagdia <Akash.bagdia@arm.com>
* Vasileios Spiliopoulos <vasileios.spiliopoulos@arm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef CPUFREQ_ARM_GEM5_MC_H
#define CPUFREQ_ARM_GEM5_MC_H
#include <linux/cpufreq.h>
#include <linux/device.h>
#include <linux/types.h>
/* Currently we support n=32 clusters */
#define MAX_CLUSTERS 32
struct cpufreq_arm_mc_ops {
char name[CPUFREQ_NAME_LEN];
int (*get_transition_latency)(struct device *cpu_dev);
/*
* This must set opp table for cpu_dev in a similar way as done by
* of_init_opp_table().
*/
int (*init_opp_table)(struct device *cpu_dev);
};
static inline int cpu_to_cluster(int cpu)
{
return topology_physical_package_id(cpu);
}
int mc_cpufreq_register(struct cpufreq_arm_mc_ops *ops);
void mc_cpufreq_unregister(struct cpufreq_arm_mc_ops *ops);
#endif /* CPUFREQ_ARM_GEM5_MC_H */