xref: /openbmc/linux/arch/arm/mach-mxs/pm.c (revision c4c11dd1)
1 /*
2  * Copyright (C) 2010 Freescale Semiconductor, Inc.
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 as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  */
14 
15 #include <linux/kernel.h>
16 #include <linux/suspend.h>
17 #include <linux/io.h>
18 
19 static int mxs_suspend_enter(suspend_state_t state)
20 {
21 	switch (state) {
22 	case PM_SUSPEND_MEM:
23 		cpu_do_idle();
24 		break;
25 
26 	default:
27 		return -EINVAL;
28 	}
29 	return 0;
30 }
31 
32 static struct platform_suspend_ops mxs_suspend_ops = {
33 	.enter = mxs_suspend_enter,
34 	.valid = suspend_valid_only_mem,
35 };
36 
37 void __init mxs_pm_init(void)
38 {
39 	suspend_set_ops(&mxs_suspend_ops);
40 }
41