arch/arm/mach-imx/pm-imx25.c

   1 /*
   2  * Copyright 2016 NXP Semiconductors
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/suspend.h>
  11 #include <linux/io.h>
  12
  13 static int imx25_suspend_enter(suspend_state_t state)
  14 {
  15         if (!IS_ENABLED(CONFIG_PM))
  16                 return 0;
  17
  18         switch (state) {
  19         case PM_SUSPEND_MEM:
  20                 cpu_do_idle();
  21                 break;
  22         default:
  23                 return -EINVAL;
  24         }
  25
  26         return 0;
  27 }
  28
  29 static const struct platform_suspend_ops imx25_suspend_ops = {
  30         .enter = imx25_suspend_enter,
  31         .valid = suspend_valid_only_mem,
  32 };
  33
  34 void __init imx25_pm_init(void)
  35 {
  36         suspend_set_ops(&imx25_suspend_ops);
  37 }