linux/drivers/devfreq/governor_performance.c
MyungJoo Ham 6530b9dea1 PM / devfreq: add min/max_freq limit requested by users.
The frequency requested to devfreq device driver from devfreq governors
is restricted by min_freq and max_freq input.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-01-20 10:12:38 +09:00

32 lines
779 B
C

/*
* linux/drivers/devfreq/governor_performance.c
*
* Copyright (C) 2011 Samsung Electronics
* MyungJoo Ham <myungjoo.ham@samsung.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.
*/
#include <linux/devfreq.h>
static int devfreq_performance_func(struct devfreq *df,
unsigned long *freq)
{
/*
* target callback should be able to get floor value as
* said in devfreq.h
*/
if (!df->max_freq)
*freq = UINT_MAX;
else
*freq = df->max_freq;
return 0;
}
const struct devfreq_governor devfreq_performance = {
.name = "performance",
.get_target_freq = devfreq_performance_func,
.no_central_polling = true,
};