[mirror_ubuntu-hirsute-kernel.git] / drivers / devfreq / governor_performance.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/drivers/devfreq/governor_performance.c
 *
 *  Copyright (C) 2011 Samsung Electronics
 *	MyungJoo Ham <myungjoo.ham@samsung.com>
 */

#include <linux/devfreq.h>
#include <linux/module.h>
#include "governor.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
	 */
	*freq = DEVFREQ_MAX_FREQ;
	return 0;
}

static int devfreq_performance_handler(struct devfreq *devfreq,
				unsigned int event, void *data)
{
	int ret = 0;

	if (event == DEVFREQ_GOV_START) {
		mutex_lock(&devfreq->lock);
		ret = update_devfreq(devfreq);
		mutex_unlock(&devfreq->lock);
	}

	return ret;
}

static struct devfreq_governor devfreq_performance = {
	.name = DEVFREQ_GOV_PERFORMANCE,
	.get_target_freq = devfreq_performance_func,
	.event_handler = devfreq_performance_handler,
};

static int __init devfreq_performance_init(void)
{
	return devfreq_add_governor(&devfreq_performance);
}
subsys_initcall(devfreq_performance_init);

static void __exit devfreq_performance_exit(void)
{
	int ret;

	ret = devfreq_remove_governor(&devfreq_performance);
	if (ret)
		pr_err("%s: failed remove governor %d\n", __func__, ret);

	return;
}
module_exit(devfreq_performance_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
ce26c5bb MH	2	/*
	3	* linux/drivers/devfreq/governor_performance.c
	4	*
	5	* Copyright (C) 2011 Samsung Electronics
	6	* MyungJoo Ham <myungjoo.ham@samsung.com>
ce26c5bb MH	7	*/
	8
	9	#include <linux/devfreq.h>
eff607fd	10	#include <linux/module.h>
0b7c328f	11	#include "governor.h"
ce26c5bb MH	12
	13	static int devfreq_performance_func(struct devfreq *df,
	14	unsigned long *freq)
	15	{
	16	/*
	17	* target callback should be able to get floor value as
	18	* said in devfreq.h
	19	*/
6ff66e2a	20	*freq = DEVFREQ_MAX_FREQ;
ce26c5bb MH	21	return 0;
	22	}
	23
7e6fdd4b RV	24	static int devfreq_performance_handler(struct devfreq *devfreq,
7e6fdd4b RV	25	unsigned int event, void *data)
0b7c328f	26	{
7e6fdd4b RV	27	int ret = 0;
	28
	29	if (event == DEVFREQ_GOV_START) {
	30	mutex_lock(&devfreq->lock);
	31	ret = update_devfreq(devfreq);
	32	mutex_unlock(&devfreq->lock);
	33	}
	34
	35	return ret;
0b7c328f XC	36	}
0b7c328f XC	37
1b5c1be2	38	static struct devfreq_governor devfreq_performance = {
aa7c352f	39	.name = DEVFREQ_GOV_PERFORMANCE,
ce26c5bb	40	.get_target_freq = devfreq_performance_func,
7e6fdd4b	41	.event_handler = devfreq_performance_handler,
ce26c5bb	42	};
83116e66 NM	43
	44	static int __init devfreq_performance_init(void)
	45	{
	46	return devfreq_add_governor(&devfreq_performance);
	47	}
	48	subsys_initcall(devfreq_performance_init);
	49
	50	static void __exit devfreq_performance_exit(void)
	51	{
	52	int ret;
	53
	54	ret = devfreq_remove_governor(&devfreq_performance);
	55	if (ret)
	56	pr_err("%s: failed remove governor %d\n", __func__, ret);
	57
	58	return;
	59	}
	60	module_exit(devfreq_performance_exit);
eff607fd	61	MODULE_LICENSE("GPL");