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Subject: Re: Regarding Wake On USB input from S3 Sleep
To: Dee Zay <julianpark90611@gmail.com>
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From: Hans Petter Selasky <hps@selasky.org>
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Date: Thu, 11 Feb 2016 08:01:33 +0100
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On 02/11/16 07:36, Dee Zay wrote:
> Hello,
>
> Thank you very much for the prompt reply.
> What are the issues if the HC remains powered on during suspend/resume?
> Is this something not to be resolved in the near future?
>

Hi,

There is no issue with suspend as I'm aware.

The problem is resume, that we would like to completely reset the HC and 
re-start enumeration and not use the handover from the BIOS.

You should also check what the BIOS is doing when it sees a HC which is 
different modes when entering suspend.

USB code is here: sys/dev/usb/controller/{ehci.c,uhci.c,ohci.c,xhci.c}

--HPS