[linux-pm] [TuxOnIce-devel] [RFC PATCH] Current status, suspend-to-disk support on ARM
myungjoo.ham at gmail.com
Thu Apr 21 00:55:58 EDT 2011
On Wed, Apr 20, 2011 at 4:14 PM, Matt Hsu <matt at 0xlab.org> wrote:
>> Also, I'd like to investigate whether ARM will require a set of
>> platform_hibernation_ops - Samsung's patch from last December,
> Hi FrankH,
> The patch seems has connection with this
Actually, those patches had no direct connections with that anyway. :)
> You can see the section 4.3 fast device reactivation.
> It does the similar thing as STR, but drivers status are kept in
> hibernation image instead of main memory.
> I guess this is why this patch comes out.
Yes, this SoC has registers that require STR/Hibernation to save the
status. They include power, clock, memory-control, gpio, uart related
> In the current device driver model, there are no appropriate handling
> specific to
> hibernation_suspend/hibernation_resume ops.
> So they make their own interface/platform drivers.
If the interface looks like dev_pm_ops, it would be virtually perfect. :)
>> seems to indicate that they believe it's necessary at least on some ARM
>> hardware. OMAP has similar functions to that, it'd be great to unify.
> - Matt
> linux-pm mailing list
> linux-pm at lists.linux-foundation.org
MyungJoo Ham, Ph.D.
Mobile Software Platform Lab,
Digital Media and Communications (DMC) Business
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