linux/arch/mips/jz4740/pm.c
Lars-Peter Clausen c863a2368c MIPS: JZ4740: Add power-management and system reset support
Add support for suspend/resume and poweroff/reboot on a JZ4740 SoC.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1398/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:26:14 +01:00

57 lines
1.3 KiB
C

/*
* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
* JZ4740 SoC power management support
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/init.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <linux/suspend.h>
#include <asm/mach-jz4740/clock.h>
#include "clock.h"
#include "irq.h"
static int jz4740_pm_enter(suspend_state_t state)
{
jz4740_intc_suspend();
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();
jz4740_intc_resume();
return 0;
}
static 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);