linux-kernel - Re: [PATCH] pinctrl: intel: save HOSTSW

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Date:   Fri, 17 Nov 2017 16:11:31 +0800
From:   Chris Chiu <chiu@...lessm.com>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     heikki.krogerus@...ux.intel.com,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linux Upstreaming Team <linux@...lessm.com>
Subject: Re: [PATCH] pinctrl: intel: save HOSTSW_OWN register over suspend/resume

On Fri, Nov 17, 2017 at 2:49 PM, Mika Westerberg
<mika.westerberg@...ux.intel.com> wrote:
> On Thu, Nov 16, 2017 at 09:27:51PM +0800, Chris Chiu wrote:
>> On Thu, Nov 16, 2017 at 8:44 PM, Mika Westerberg
>> <mika.westerberg@...ux.intel.com> wrote:
>> > On Wed, Nov 15, 2017 at 06:19:56PM +0800, Chris Chiu wrote:
>> >> Hi Mika,
>> >>     I've confirmed with Asus and they said it's the latest BIOS for
>> >> shipment and verified OK on Windows. So their BIOS team will not do
>> >> anything for this.
>> >
>> > I'll ask around if our Windows people know anything about this. My gut
>> > feeling is that the Windows driver does not touch HOSTSW_OWN either.
>>
>> Thanks. Please let me know if you need any information. I still keep
>> the machine.
>
> Got confirmation from Windows people. So Windows pretty much saves and
> restores the same registers than we do (padcfg + ie).
>
> Have you tried whether s2idle works instead of S3 suspend? You can try
> it like
>
>   # echo freeze > /sys/power/state
>
> If that works, I'm guessing that this system uses s2idle and that's also
> what Windows uses and could explain why it works in Windows.

Unfortunately, I cant wake it up from neither power button nor any key
event after  "# echo freeze > /sys/power/state"....