drivers/devfreq/governor_powersave.c

   1 /*
   2  *  linux/drivers/devfreq/governor_powersave.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_powersave_func(struct devfreq *df,
  15                                   unsigned long *freq)
  16 {
  17         /*
  18          * target callback should be able to get ceiling value as
  19          * said in devfreq.h
  20          */
  21         *freq = 0;
  22         return 0;
  23 }
  24
  25 const struct devfreq_governor devfreq_powersave = {
  26         .name = "powersave",
  27         .get_target_freq = devfreq_powersave_func,
  28         .no_central_polling = true,
  29 };