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/*
* Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program 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; either version 2 of the License, or
* (at your option) any later version.
* 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <linux/fs.h>
#include <linux/earlysuspend.h>
#include <linux/cpufreq.h>
extern void cpufreq_save_default_governor(void);
extern void cpufreq_restore_default_governor(void);
extern void cpufreq_set_conservative_governor_param(int up_th, int down_th);
extern void cpufreq_set_performance_governor(void);
extern void cpufreq_set_conservative_governor(void);
#define SET_GOVERNOR_TO_PERFORMANCE 1
static void cpufreq_early_suspend(struct early_suspend *p)
{
cpufreq_save_default_governor();
#ifdef SET_GOVERNOR_TO_PERFORMANCE//[
cpufreq_set_performance_governor();
#else //][SET_GOVERNOR_TO_PERFORMANCE
cpufreq_set_conservative_governor();
cpufreq_set_conservative_governor_param(
SET_CONSERVATIVE_GOVERNOR_UP_THRESHOLD,
SET_CONSERVATIVE_GOVERNOR_DOWN_THRESHOLD);
#endif //]SET_GOVERNOR_TO_PERFORMANCE
}
static void cpufreq_late_resume(struct early_suspend *p)
{
cpufreq_restore_default_governor();
}
struct early_suspend cpufreq_earlysuspend = {
.level = EARLY_SUSPEND_LEVEL_POST_DISABLE_FB,
.suspend = cpufreq_early_suspend,
.resume = cpufreq_late_resume,
};
static int __init cpufreq_on_earlysuspend_init(void)
{
register_early_suspend(&cpufreq_earlysuspend);
return 0;
}
static void __exit cpufreq_on_earlysuspend_exit(void)
{
unregister_early_suspend(&cpufreq_earlysuspend);
}
module_init(cpufreq_on_earlysuspend_init);
module_exit(cpufreq_on_earlysuspend_exit);
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