When to call cfi_amdstd_suspend() ?

When to call cfi_amdstd_suspend() ?

[Steven Scholz]

Hi all,

I implemented my MTD board driver as a platform device with support for
suspend/resume.

Upon suspend-to-ram its ->suspend() funktion is called three times for
levels SUSPEND_DISABLE, SUSPEND_SAVE_STATE and SUSPEND_POWER_DOWN.

In which level should I call the MTD suspend function (i.e.
cfi_amdstd_suspend() in my case) ?
What happens if I called it in every level as it is done in pxa2xx-flash.c?

Similar situation in the resume path.

Thanks,

Steven

Re: When to call cfi_amdstd_suspend() ?

[Todd Poynor]

Steven Scholz wrote:
> Hi all,
> 
> I implemented my MTD board driver as a platform device with support for
> suspend/resume.
> 
> Upon suspend-to-ram its ->suspend() funktion is called three times for
> levels SUSPEND_DISABLE, SUSPEND_SAVE_STATE and SUSPEND_POWER_DOWN.
> 
> In which level should I call the MTD suspend function (i.e.
> cfi_amdstd_suspend() in my case) ?

You can pretty much just choose one... SUSPEND_POWER_DOWN may be a good 
choice.  Same for resume.  The levels aren't really used anymore in the 
PM subsystem.

> What happens if I called it in every level as it is done in pxa2xx-flash.c?

That file is ported to a newer version of the code that drops the levels 
and the suspend/resume callbacks are only called once.


-- 
Todd