Re: wakeup by serial port ?

[Erik Mouw <mouw@xxxxxxxxxxxx>]

On Thu, Jan 04, 2007 at 06:05:08PM +0200, Ramagudi Naziir wrote:
> On 1/4/07, Erik Mouw <mouw@xxxxxxxxxxxx> wrote:
> >On Thu, Jan 04, 2007 at 05:26:28PM +0200, Ramagudi Naziir wrote:
> >> I know that PCI and USB devices can wake up a suspended linux machine.
> >> My question is whether a serial port device can wake it up too ?
> >Sure, why not? Most BIOSes have a page where you can tell what you
> >want to use as a wake up source.
> 
> How is it done in the hardware:  via the RX line ? the CTS line ?

I have no idea, vendor dependent. Just try it out.

> and in the software ? do i need to register an interrupt on the wake-up 
> line ?
> is there any relevant API I need to use ?

You have to do nothing. BIOS should take care.


Erik

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