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 } 38