Re: [PATCH] pinctrl: intel: save HOSTSW_OWN register over suspend/resume

[Chris Chiu <chiu@endlessm.com>]

On Tue, Nov 21, 2017 at 8:04 PM, Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
> On Tue, Nov 21, 2017 at 07:54:26PM +0800, Chris Chiu wrote:
>> Yup, I checked the value of the corresponded pin. It shows following before
>> suspend
>> pin 18 (GPIO_18) GPIO 0x40800102 0x00024075
>>
>> Then after resume
>> pin 18 (GPIO_18) GPIO 0x40800102 0x00024075 [ACPI]
>
> OK, so ownership is changed to ACPI.
>
>> What else register do you suggest me to compare? The PADCFG2 is invalid
>
> It's fine APL does not have PADCFG2.
>
> Hmm, I don't understand how this can work in Windows either. The Windows
> people told me that they don't save and restore anything else than
> padcfg registers + ie. If the ownership is changed to ACPI it means you
> don't get interrupts anymore (only GPEs) and that applies to Windows as
> well.

Thanks for your confirmation. I've pushed this back to ASUS. They told me
there's a new official BIOS released, of course they don't know
whether if it helps
or not. I then upgraded it and the problem is gone. So it's truly a
BIOS but as you
said. Thanks for your help.

Chris