xref: /openbmc/linux/arch/arm/mach-shmobile/suspend.c (revision e2f2594b) 
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Suspend-to-RAM support code for SH-Mobile ARM
4  *
5  *  Copyright (C) 2011 Magnus Damm
6  */
7 
8 #include <linux/pm.h>
9 #include <linux/suspend.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/cpu.h>
13 
14 #include <asm/io.h>
15 #include <asm/system_misc.h>
16 
17 #include "common.h"
18 
shmobile_suspend_default_enter(suspend_state_t suspend_state)19 static int shmobile_suspend_default_enter(suspend_state_t suspend_state)
20 {
21 	cpu_do_idle();
22 	return 0;
23 }
24 
shmobile_suspend_begin(suspend_state_t state)25 static int shmobile_suspend_begin(suspend_state_t state)
26 {
27 	cpu_idle_poll_ctrl(true);
28 	return 0;
29 }
30 
shmobile_suspend_end(void)31 static void shmobile_suspend_end(void)
32 {
33 	cpu_idle_poll_ctrl(false);
34 }
35 
36 struct platform_suspend_ops shmobile_suspend_ops = {
37 	.begin		= shmobile_suspend_begin,
38 	.end		= shmobile_suspend_end,
39 	.enter		= shmobile_suspend_default_enter,
40 	.valid		= suspend_valid_only_mem,
41 };
42 
shmobile_suspend_init(void)43 int __init shmobile_suspend_init(void)
44 {
45 	suspend_set_ops(&shmobile_suspend_ops);
46 	return 0;
47 }
48