1/*
 2 *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
 3 *	JZ4740 SoC power management support
 4 *
 5 *  This program is free software; you can redistribute it and/or modify it
 6 *  under  the terms of the GNU General	 Public License as published by the
 7 *  Free Software Foundation;  either version 2 of the License, or (at your
 8 *  option) any later version.
 9 *
10 *  You should have received a copy of the GNU General Public License along
11 *  with this program; if not, write to the Free Software Foundation, Inc.,
12 *  675 Mass Ave, Cambridge, MA 02139, USA.
13 *
14 */
15
16#include <linux/init.h>
17#include <linux/pm.h>
18#include <linux/delay.h>
19#include <linux/suspend.h>
20
21#include <asm/mach-jz4740/clock.h>
22
23static int jz4740_pm_enter(suspend_state_t state)
24{
25	jz4740_clock_suspend();
26
27	jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_SLEEP);
28
29	__asm__(".set\tmips3\n\t"
30		"wait\n\t"
31		".set\tmips0");
32
33	jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_IDLE);
34
35	jz4740_clock_resume();
36
37	return 0;
38}
39
40static const struct platform_suspend_ops jz4740_pm_ops = {
41	.valid		= suspend_valid_only_mem,
42	.enter		= jz4740_pm_enter,
43};
44
45static int __init jz4740_pm_init(void)
46{
47	suspend_set_ops(&jz4740_pm_ops);
48	return 0;
49
50}
51late_initcall(jz4740_pm_init);