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61 lines
1.3 KiB
61 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/drivers/devfreq/governor_performance.c |
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* |
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* Copyright (C) 2011 Samsung Electronics |
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* MyungJoo Ham <[email protected]> |
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*/ |
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#include <linux/devfreq.h> |
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#include <linux/module.h> |
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#include "governor.h" |
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static int devfreq_performance_func(struct devfreq *df, |
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unsigned long *freq) |
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{ |
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/* |
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* target callback should be able to get floor value as |
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* said in devfreq.h |
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*/ |
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*freq = DEVFREQ_MAX_FREQ; |
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return 0; |
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} |
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static int devfreq_performance_handler(struct devfreq *devfreq, |
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unsigned int event, void *data) |
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{ |
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int ret = 0; |
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if (event == DEVFREQ_GOV_START) { |
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mutex_lock(&devfreq->lock); |
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ret = update_devfreq(devfreq); |
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mutex_unlock(&devfreq->lock); |
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} |
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return ret; |
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} |
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static struct devfreq_governor devfreq_performance = { |
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.name = DEVFREQ_GOV_PERFORMANCE, |
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.get_target_freq = devfreq_performance_func, |
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.event_handler = devfreq_performance_handler, |
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}; |
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static int __init devfreq_performance_init(void) |
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{ |
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return devfreq_add_governor(&devfreq_performance); |
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} |
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subsys_initcall(devfreq_performance_init); |
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static void __exit devfreq_performance_exit(void) |
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{ |
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int ret; |
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ret = devfreq_remove_governor(&devfreq_performance); |
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if (ret) |
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pr_err("%s: failed remove governor %d\n", __func__, ret); |
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return; |
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} |
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module_exit(devfreq_performance_exit); |
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MODULE_LICENSE("GPL");
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