1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/init.h>
 3#include <linux/suspend.h>
 4#include <asm/suspend.h>
 5#include "smc.h"
 6
 7static int tango_pm_powerdown(unsigned long arg)
 8{
 9	tango_suspend(__pa_symbol(cpu_resume));
10
11	return -EIO; /* tango_suspend has failed */
12}
13
14static int tango_pm_enter(suspend_state_t state)
15{
16	if (state == PM_SUSPEND_MEM)
17		return cpu_suspend(0, tango_pm_powerdown);
18
19	return -EINVAL;
20}
21
22static const struct platform_suspend_ops tango_pm_ops = {
23	.enter = tango_pm_enter,
24	.valid = suspend_valid_only_mem,
25};
26
27static int __init tango_pm_init(void)
28{
29	suspend_set_ops(&tango_pm_ops);
30	return 0;
31}
32
33late_initcall(tango_pm_init);