drivers/devfreq/governor_performance.c

   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 "governor.h"
  14
  15 static int devfreq_performance_func(struct devfreq *df,
  16                                     unsigned long *freq)
  17 {
  18         /*
  19          * target callback should be able to get floor value as
  20          * said in devfreq.h
  21          */
  22         if (!df->max_freq)
  23                 *freq = UINT_MAX;
  24         else
  25                 *freq = df->max_freq;
  26         return 0;
  27 }
  28
  29 static int performance_init(struct devfreq *devfreq)
  30 {
  31         return update_devfreq(devfreq);
  32 }
  33
  34 const struct devfreq_governor devfreq_performance = {
  35         .name = "performance",
  36         .init = performance_init,
  37         .get_target_freq = devfreq_performance_func,
  38         .no_central_polling = true,
  39 };