Date: Thu, 11 Feb 2016 15:36:22 +0900 From: Dee Zay <julianpark90611@gmail.com> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-acpi@freebsd.org Subject: Re: Regarding Wake On USB input from S3 Sleep Message-ID: <CACMcRdcVnCshhPpc9qAyGeg62DgYxFxRbkiNMVsCeMF7SOmmrA@mail.gmail.com> In-Reply-To: <56BC289F.2070208@selasky.org> References: <CACMcRdfLERKud5_0GMKK1m7RF1DS8hxrhSxpZFEUyqpMWNS7EQ@mail.gmail.com> <56BC289F.2070208@selasky.org>
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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?
Many Thanks,
Julian
On Thu, Feb 11, 2016 at 3:22 PM, Hans Petter Selasky <hps@selasky.org>
wrote:
> On 02/11/16 04:54, Dee Zay wrote:
>
>> Dear FreeBSD ACPI Community,
>>
>> I am trying to implement WakeOnUSB (e.g. USB keyboard input) from S3 Sleep
>> state, but have no clue where to start from.
>> I noticed the PS2 keyboard is capable of waking up a system and also found
>> there is a PS2 handler portion in asl from acpidump:
>>
>> Method (PS2K._PRW, 0, NotSerialized) // _PRW: Power
>> Resources
>> for Wake
>> {
>> Return (GPRW (0x6B, 0x03))
>> }
>> However, there is no such handle for individual usb ports other than its
>> parent's class (\_SB_.PCI0.XHC_).
>> Also, I found there are FreeBSD-specific ACPICA C codes under /sys/dev
>> including acpi_button.c and acpi_lid.c, which are only for the fixed acpi
>> components.
>>
>> So my question is,
>> Is it possible to implement WakeOnUSB input for individual USB ports by
>> somehow fixing the ACPICA C codes (without fixing the asl as it is
>> system-dependent)? If so, how?
>>
>> I would really appreciate it if you could help me out here.
>>
>> Best regards,
>> Julian
>>
>
> Hi,
>
> The USB controller drivers shutdown the HC at suspend and reset at resume.
> That has proven to work the best. At the moment I think wakeup by USB
> resume is not supported.
>
> --HPS
>
>
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