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/*
* Copyright 2012, Linaro
*
* This file is part of PowerTOP
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
* or just google for it.
*
* Authors:
* Rajagopal Venkat <rajagopal.venkat@linaro.org>
*/
#ifndef _INCLUDE_GUARD_DEVFREQ_H
#define _INCLUDE_GUARD_DEVFREQ_H
#include "device.h"
#include "../parameters/parameters.h"
#include <sys/time.h>
struct frequency;
class devfreq: public device {
char dir_name[128];
struct timeval stamp_before, stamp_after;
double sample_time;
uint64_t parse_freq_time(char *ptr);
void add_devfreq_freq_state(uint64_t freq, uint64_t time);
void update_devfreq_freq_state(uint64_t freq, uint64_t time);
void parse_devfreq_trans_stat(char *dname);
void process_time_stamps();
public:
vector<struct frequency *> dstates;
devfreq(const char *c);
void fill_freq_utilization(unsigned int idx, char *buf);
void fill_freq_name(unsigned int idx, char *buf);
virtual void start_measurement(void);
virtual void end_measurement(void);
virtual double utilization(void); /* percentage */
virtual const char * class_name(void) { return "devfreq";};
virtual const char * device_name(void) { return dir_name;};
virtual const char * human_name(void) { return "devfreq";};
virtual double power_usage(struct result_bundle *result, struct parameter_bundle *bundle);
virtual const char * util_units(void) { return " rpm"; };
virtual int power_valid(void) { return 0; /*utilization_power_valid(r_index);*/};
virtual int grouping_prio(void) { return 1; };
};
extern void create_all_devfreq_devices(void);
extern void clear_all_devfreq(void);
extern void display_devfreq_devices(void);
extern void report_devfreq_devices(void);
extern void initialize_devfreq(void);
extern void start_devfreq_measurement(void);
extern void end_devfreq_measurement(void);
#endif
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