Regarding Wake On USB input from S3 Sleep

[Dee Zay]

Hello,

I am a bit confused about the resume problem and its procedures.
Could you explain briefly about the difference between resuming from
standby(powered) and completely off HC?

Thank you,
Julian

On Thu, Feb 11, 2016 at 4:01 PM, Hans Petter Selasky <hps at selasky.org>
wrote:

> 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
>
>