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