1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *  linux/drivers/devfreq/governor_performance.c
 4 *
 5 *  Copyright (C) 2011 Samsung Electronics
 6 *	MyungJoo Ham <myungjoo.ham@samsung.com>
 
 
 
 
 7 */
 8
 9#include <linux/devfreq.h>
10#include <linux/module.h>
11#include "governor.h"
12
13static 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	 */
20	*freq = DEVFREQ_MAX_FREQ;
 
 
 
21	return 0;
22}
23
24static int devfreq_performance_handler(struct devfreq *devfreq,
25				unsigned int event, void *data)
26{
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;
36}
37
38static struct devfreq_governor devfreq_performance = {
39	.name = DEVFREQ_GOV_PERFORMANCE,
40	.get_target_freq = devfreq_performance_func,
41	.event_handler = devfreq_performance_handler,
42};
43
44static int __init devfreq_performance_init(void)
45{
46	return devfreq_add_governor(&devfreq_performance);
47}
48subsys_initcall(devfreq_performance_init);
49
50static 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}
60module_exit(devfreq_performance_exit);
61MODULE_LICENSE("GPL");

 
 1/*
 2 *  linux/drivers/devfreq/governor_performance.c
 3 *
 4 *  Copyright (C) 2011 Samsung Electronics
 5 *	MyungJoo Ham <myungjoo.ham@samsung.com>
 6 *
 7 * This program is free software; you can redistribute it and/or modify
 8 * it under the terms of the GNU General Public License version 2 as
 9 * published by the Free Software Foundation.
10 */
11
12#include <linux/devfreq.h>
13#include <linux/module.h>
14#include "governor.h"
15
16static int devfreq_performance_func(struct devfreq *df,
17				    unsigned long *freq)
18{
19	/*
20	 * target callback should be able to get floor value as
21	 * said in devfreq.h
22	 */
23	if (!df->max_freq)
24		*freq = UINT_MAX;
25	else
26		*freq = df->max_freq;
27	return 0;
28}
29
30static int devfreq_performance_handler(struct devfreq *devfreq,
31				unsigned int event, void *data)
32{
33	int ret = 0;
34
35	if (event == DEVFREQ_GOV_START) {
36		mutex_lock(&devfreq->lock);
37		ret = update_devfreq(devfreq);
38		mutex_unlock(&devfreq->lock);
39	}
40
41	return ret;
42}
43
44static struct devfreq_governor devfreq_performance = {
45	.name = "performance",
46	.get_target_freq = devfreq_performance_func,
47	.event_handler = devfreq_performance_handler,
48};
49
50static int __init devfreq_performance_init(void)
51{
52	return devfreq_add_governor(&devfreq_performance);
53}
54subsys_initcall(devfreq_performance_init);
55
56static void __exit devfreq_performance_exit(void)
57{
58	int ret;
59
60	ret = devfreq_remove_governor(&devfreq_performance);
61	if (ret)
62		pr_err("%s: failed remove governor %d\n", __func__, ret);
63
64	return;
65}
66module_exit(devfreq_performance_exit);
67MODULE_LICENSE("GPL");