arch/mips/jz4740/pm.c


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// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
 *	JZ4740 SoC power management support
 */

#include <linux/init.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <linux/suspend.h>

#include <asm/mach-jz4740/clock.h>

static int jz4740_pm_enter(suspend_state_t state)
{
	jz4740_clock_suspend();

	jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_SLEEP);

	__asm__(".set\tmips3\n\t"
		"wait\n\t"
		".set\tmips0");

	jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_IDLE);

	jz4740_clock_resume();

	return 0;
}

static const struct platform_suspend_ops jz4740_pm_ops = {
	.valid		= suspend_valid_only_mem,
	.enter		= jz4740_pm_enter,
};

static int __init jz4740_pm_init(void)
{
	suspend_set_ops(&jz4740_pm_ops);
	return 0;

}
late_initcall(jz4740_pm_init);