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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2016 NXP Semiconductors
   4  */
   5
   6 #include <linux/kernel.h>
   7 #include <linux/suspend.h>
   8 #include <linux/io.h>
   9 #include "common.h"
  10
  11 static int imx25_suspend_enter(suspend_state_t state)
  12 {
  13         if (!IS_ENABLED(CONFIG_PM))
  14                 return 0;
  15
  16         switch (state) {
  17         case PM_SUSPEND_MEM:
  18                 cpu_do_idle();
  19                 break;
  20         default:
  21                 return -EINVAL;
  22         }
  23
  24         return 0;
  25 }
  26
  27 static const struct platform_suspend_ops imx25_suspend_ops = {
  28         .enter = imx25_suspend_enter,
  29         .valid = suspend_valid_only_mem,
  30 };
  31
  32 void __init imx25_pm_init(void)
  33 {
  34         suspend_set_ops(&imx25_suspend_ops);
  35 }