From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- drivers/devfreq/governor_performance.c | 67 ++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 drivers/devfreq/governor_performance.c (limited to 'drivers/devfreq/governor_performance.c') diff --git a/drivers/devfreq/governor_performance.c b/drivers/devfreq/governor_performance.c new file mode 100644 index 00000000..c72f942f --- /dev/null +++ b/drivers/devfreq/governor_performance.c @@ -0,0 +1,67 @@ +/* + * linux/drivers/devfreq/governor_performance.c + * + * Copyright (C) 2011 Samsung Electronics + * MyungJoo Ham + * + * 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 +#include +#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 + */ + if (!df->max_freq) + *freq = UINT_MAX; + else + *freq = df->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 = "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"); -- cgit v1.3.1