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
  10 static int imx25_suspend_enter(suspend_state_t state)
  11 {
  12         if (!IS_ENABLED(CONFIG_PM))
  13                 return 0;
  14
  15         switch (state) {
  16         case PM_SUSPEND_MEM:
  17                 cpu_do_idle();
  18                 break;
  19         default:
  20                 return -EINVAL;
  21         }
  22
  23         return 0;
  24 }
  25
  26 static const struct platform_suspend_ops imx25_suspend_ops = {
  27         .enter = imx25_suspend_enter,
  28         .valid = suspend_valid_only_mem,
  29 };
  30
  31 void __init imx25_pm_init(void)
  32 {
  33         suspend_set_ops(&imx25_suspend_ops);
  34 }