[PATCH 10/10] ARM: mxs: add initial pm support

[Shawn Guo]

Hi Uwe,

On Wed, Dec 29, 2010 at 11:57:09AM +0100, Uwe Kleine-König wrote:
> Hello Shawn,
> 
> On Tue, Dec 28, 2010 at 10:55:55PM +0800, Shawn Guo wrote:
> > 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: Shawn Guo <shawn.guo at freescale.com>
> > ---
> >  arch/arm/mach-mxs/Makefile |    2 +-
> >  arch/arm/mach-mxs/pm.c     |   44 ++++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 45 insertions(+), 1 deletions(-)
> >  create mode 100644 arch/arm/mach-mxs/pm.c
> > 
> > diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
> > index f23ebbd..020547d 100644
> > --- a/arch/arm/mach-mxs/Makefile
> > +++ b/arch/arm/mach-mxs/Makefile
> > @@ -1,5 +1,5 @@
> >  # Common support
> > -obj-y := clock.o devices.o gpio.o icoll.o iomux.o ocotp.o system.o timer.o
> > +obj-y := clock.o devices.o gpio.o icoll.o iomux.o ocotp.o pm.o system.o timer.o
> I don't know what is usual here, but I guess doing
> 
> 	obj-$(CONFIG_PM) += pm.o
> 
Will do.  Thanks.

> is better.  (Or CONFIG_SUSPEND?)
> 
> >  obj-$(CONFIG_SOC_IMX23) += clock-mx23.o mm-mx23.o
> >  obj-$(CONFIG_SOC_IMX28) += clock-mx28.o mm-mx28.o
> > diff --git a/arch/arm/mach-mxs/pm.c b/arch/arm/mach-mxs/pm.c
> > new file mode 100644
> > index 0000000..e4f4e31
> > --- /dev/null
> > +++ b/arch/arm/mach-mxs/pm.c
> > @@ -0,0 +1,44 @@
> > +/*
> > + * 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;
> > +}
> > +
> can you please remove this empty line?
> 
OK.

-- 
Regards,
Shawn