Commit 376e9c58 authored by Shawn Guo's avatar Shawn Guo Committed by Sascha Hauer
Browse files

ARM: mxs: add initial pm support 



This is a very initial pm support and basically does nothing.
With this pm support entry, drivers can start testing their own
pm functions.

Signed-off-by: default avatarShawn Guo <shawn.guo@freescale.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent cf3567aa

arch/arm/mach-mxs/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
obj-y := clock.o devices.o gpio.o icoll.o iomux.o system.o timer.o



obj-$(CONFIG_MXS_OCOTP) += ocotp.o

obj-$(CONFIG_PM) += pm.o



obj-$(CONFIG_SOC_IMX23) += clock-mx23.o mm-mx23.o

obj-$(CONFIG_SOC_IMX28) += clock-mx28.o mm-mx28.o

arch/arm/mach-mxs/pm.c

0 → 100644
+43 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2010 Freescale Semiconductor, Inc.

 *

 * 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.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#include <linux/kernel.h>

#include <linux/suspend.h>

#include <linux/io.h>

#include <mach/system.h>



static int mxs_suspend_enter(suspend_state_t state)

{

	switch (state) {

	case PM_SUSPEND_MEM:

		arch_idle();

		break;



	default:

		return -EINVAL;

	}

	return 0;

}



static struct platform_suspend_ops mxs_suspend_ops = {

	.enter = mxs_suspend_enter,

	.valid = suspend_valid_only_mem,

};



static int __init mxs_pm_init(void)

{

	suspend_set_ops(&mxs_suspend_ops);

	return 0;

}

device_initcall(mxs_pm_init);