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/*
* linux/arch/arm/mach-mx3/pm.c
*
* MX3 Power Management Routines
*
* Original code for the SA11x0:
* Copyright (c) 2001 Cliff Brake <cbrake@accelent.com>
*
* Modified for the PXA250 by Nicolas Pitre:
* Copyright (c) 2002 Monta Vista Software, Inc.
*
* Modified for the OMAP1510 by David Singleton:
* Copyright (c) 2002 Monta Vista Software, Inc.
*
* Cleanup 2004 for OMAP1510/1610 by Dirk Behme <dirk.behme@de.bosch.com>
*
* Modified for the MX31
* Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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/kernel.h>
#include <linux/err.h>
#include <linux/suspend.h>
#include <linux/regulator/machine.h>
#include <mach/mxc_pm.h>
/*
* TODO: whatta save?
*/
static int mx31_suspend_enter(suspend_state_t state)
{
printk(KERN_INFO "Hi, from mx31_pm_enter\n");
switch (state) {
case PM_SUSPEND_MEM:
mxc_pm_lowpower(DSM_MODE);
break;
case PM_SUSPEND_STANDBY:
mxc_pm_lowpower(STOP_MODE);
break;
default:
return -1;
}
return 0;
}
/*
* Called after processes are frozen, but before we shut down devices.
*/
static int mx31_suspend_prepare(void)
{
return 0;
}
/*
* Called after devices are re-setup, but before processes are thawed.
*/
static void mx31_suspend_finish(void)
{
return;
}
static int mx31_pm_valid(suspend_state_t state)
{
return (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX);
}
struct platform_suspend_ops mx31_suspend_ops = {
.valid = mx31_pm_valid,
.prepare = mx31_suspend_prepare,
.enter = mx31_suspend_enter,
.finish = mx31_suspend_finish,
};
static int __init mx31_pm_init(void)
{
printk(KERN_INFO "Power Management for Freescale MX31\n");
suspend_set_ops(&mx31_suspend_ops);
return 0;
}
late_initcall(mx31_pm_init);
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